Electronic device

Abstract

The invention discloses electronic equipment, and relates to the field of electronic products. The electronic equipment comprises a first shell, a second shell, a flexible screen, a driving assembly and a first detection element, the first shell is in sliding connection with the second shell; the flexible screen is arranged on one side of the first shell and one side of the second shell in the thickness direction of the electronic equipment; the driving assembly is arranged in the first shell and comprises a gear, and the second shell is provided with a rack which extends in the sliding direction and is meshed with the gear; the first detection element and the gear are oppositely arranged, and the first detection element is used for detecting rotation information of the gear and obtaining the position of the flexible screen in the folding or unfolding process according to the rotation information of the gear. The problem that the specific position of the display screen cannot be obtained can be solved.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to an electronic equipment. Background Art

[0002] In recent years, with the continuous development of flexible display technology, foldable, rollable, and stretchable screens have gradually begun to appear and replace traditional hard-screen mobile phones. Retractable screens have controllable screen sizes, which can bring viewing convenience, richer display images, clearer display details, and a more convenient carrying experience, better meeting consumer needs.

[0003] Regarding the roll-up screen device, the display visible area is the largest when it is fully expanded, and the display visible area gradually decreases during the contraction process. A part of the display screen will gradually be stored in the roll-up screen device. The stored part no longer needs to display the picture, and the stored part can be called the non-visible area of ​​the display screen.

[0004] The curved screen device in the related art cannot adjust the screen ratio of the viewing area of ​​the display screen because it cannot know the specific position of the display screen, which not only increases power consumption but also affects the service life of the display screen. Summary of the Invention

[0005] The purpose of the embodiment of the present application is to provide an electronic device that can detect the rotation information of the gear through a first detection element, and accurately determine the position of the flexible screen during the folding or unfolding process through the rotation information of the gear, so as to facilitate the subsequent adjustment of the specific position of the flexible screen and close the non-visible area of ​​the flexible screen, which can not only reduce the energy consumption of the flexible screen and improve the battery life of the electronic device, but also help to extend the service life of the flexible screen.

[0006] An embodiment of the present application provides an electronic device, comprising: a first housing, a second housing, a flexible screen, a driving assembly, and a first detection element; The first shell is slidably connected to the second shell; Along the thickness direction of the electronic device, the flexible screen is provided on one side of the first shell and the second shell; The driving assembly is arranged in the first housing, the driving assembly includes a gear, and the second housing is provided with a rack extending along the sliding direction and meshing with the gear; The first detection element is arranged opposite to the gear, and the first detection element is used to detect the rotation information of the gear, and obtain the position of the flexible screen during the folding or unfolding process based on the rotation information of the gear.

[0007] The embodiment of the present application can determine the position of the flexible screen during the folding or unfolding process through the rotation information of the gear, so as to facilitate the subsequent adjustment of the specific position of the flexible screen to close the non-visible area of ​​the flexible screen, thereby reducing energy consumption and also helping to extend the service life of the flexible screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic structural diagram of an electronic device in a folded state provided in some embodiments of the present application; Figure 2 A schematic structural diagram of an electronic device in an unfolded state provided in some embodiments of the present application; Figure 3 A schematic cross-sectional view of an electronic device in an unfolded state provided for some embodiments of the present application; Figure 4 A disassembled schematic diagram of an electronic device in an unfolded state provided in some embodiments of the present application; Figure 5 A schematic structural diagram of a rotating shaft, a gear, and a second detection element provided in some embodiments of the present application; Figure 6 A schematic diagram of the distribution of second detection elements on a gear provided in some embodiments of the present application; Figure 7 A partial schematic diagram of a first housing, a drive assembly, a first detection element, and a second detection element provided in some embodiments of the present application; Figure 8 Schematic diagram of a gear, a rack, and a first detection element provided in some embodiments of the present application; Figure 9 Schematic diagram of the structure of the flexible screen, support plate and rack provided in some embodiments of the present application.

[0009] Description of reference numerals: 10-first shell; 20-second shell; 21-support plate; 22-rack; 30-flexible screen; 40-drive assembly; 41-gear; 42-rotating shaft; 50-first detection element; 51-signal transmitting end; 52-signal receiving end; 60-second detection element; 70-third detection element; 80-fourth detection element. DETAILED DESCRIPTION

[0010] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0011] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0012] The embodiments of the present application are described in detail below through specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0013] refer to Figures 1 to 9 The present application discloses an electronic device, wherein the electronic device may be a retractable electronic device. The disclosed electronic device includes a first housing 10, a second housing 20, a flexible screen 30, a driving assembly 40, and a first detection element 50.

[0014] The first housing 10 is slidably connected to the second housing 20. Along the thickness direction of the electronic device, the flexible screen 30 is provided on one side of the first housing 10 and the second housing 20. Optionally, one of the first housing 10 and the second housing 20 can be nested outside the other. In this way, when the electronic device is in the folded state, the other of the first housing 10 and the second housing 20 can be retracted into the other, thereby reducing the overall volume of the electronic device and making it easier for users to hold or carry the electronic device. When the electronic device is in the unfolded state, the other of the first housing 10 and the second housing 20 can be extended from the other, thereby increasing the overall volume of the electronic device for easier viewing or operation.

[0015] Accordingly, when the electronic device is in the folded state, a portion of the flexible screen 30 can be retracted into one of the first shell 10 and the second shell 20, and the picture is displayed through the area located outside one of them. In this case, the display area of ​​the flexible screen 30 is minimized, which makes it convenient to hold and carry, and also enables the electronic device to have display or operation functions.

[0016] When the electronic device is in the unfolded state, most of the area of ​​the flexible screen 30 is located outside one of the first shell 10 and the second shell 20, and the picture is displayed through the area located on the outside. In this case, the display area of ​​the flexible screen 30 is increased compared to the folded state, so that it is convenient for users to view and operate the display content in the display area of ​​the flexible screen 30.

[0017] In some more specific embodiments, the first shell 10 can be sleeved on the outside of the second shell 20, and the second shell 20 can slide in or out relative to the first shell 10 to facilitate switching between the folded and unfolded states of the electronic device.

[0018] In addition, one end of the flexible screen 30 can be fixedly connected to the second shell 20, and the other end of the flexible screen 30 can be wound around a scroll located inside the first shell 10. In this way, during the process of folding or unfolding the electronic device, the flexible screen 30 can be wound onto the scroll or released from the scroll to adapt to the relative sliding of the first shell 10 and the second shell 20.

[0019] The driving assembly 40 is disposed in the first housing 10 and can be connected to the second housing 20 to drive the second housing 20 to slide relative to the first housing 10 .

[0020] refer to Figure 3 and Figure 4 The driving assembly 40 may include a gear 41, which can rotate in the first shell 10; the second shell 20 may be provided with a rack 22, which extends along the sliding direction of the first shell 10 and the second shell 20, and the rack 22 is engaged with the gear 41. In this way, the rotation of the gear 41 can drive the rack 22 to move along the sliding direction, and further the rack 22 drives the second shell 20 to slide relative to the first shell 10 to achieve extension and retraction.

[0021] Optionally, the driving assembly 40 may further include a rotating driving member, such as an electric motor, etc., which drives the gear 41 to rotate.

[0022] The first detection element 50 is arranged opposite to the gear 41. The first detection element 50 is used to detect the rotation information of the gear 41 and obtain the position of the flexible screen 30 during the folding or unfolding process based on the rotation information of the gear 41. It should be noted here that during the rotation of the gear 41, the first detection element 50 can detect the gear 41 in real time to obtain the rotation information of the gear 41; considering that the gear 41 drives the second shell 20 to slide through the rack 22, the relative position of the second shell 20 and the first shell 10 can be known, and then the specific position of the flexible screen 30 can be known, so as to lay the foundation for adjusting the position of the flexible screen 30.

[0023] It should be noted here that the flexible screen 30 can be folded or unfolded under the drive of the gear 41. The tooth pitch of the gear 41 is the minimum unit distance of the movement of the flexible screen 30. The moving distance of the flexible screen 30 can be obtained through the tooth pitch of the gear 41 and multiple tooth structures.

[0024] Based on the above settings, the electronic device in the embodiment of the present application can detect the rotation information of the gear 41 through the first detection element 50, and accurately determine the position of the flexible screen 30 during the folding or unfolding process through the rotation information of the gear 41, so as to facilitate the subsequent adjustment of the specific position of the flexible screen 30 and close the non-visible area of ​​the flexible screen 30, which can not only reduce the energy consumption of the flexible screen 30 and improve the battery life of the electronic device, but also help to extend the service life of the flexible screen 30.

[0025] In addition, the embodiment of the present application can calculate the extension distance of the flexible screen 30 by obtaining the trajectory change of the rotating shaft 42, so as to facilitate the determination of the position of the flexible screen 30.

[0026] It should be noted that after obtaining the rotation information of the gear 41, the position of the rack 22 relative to the gear 41 can be obtained, and the position of the second shell 20 relative to the first shell 10 can be obtained through the position of the rack 22, and the position of the flexible screen 30 during the folding or unfolding process can be obtained. The embodiment of this application aims to obtain the rotation information of the gear 41, and the principles and logic of obtaining the specific position of the flexible screen 30 through the rotation information of the gear 41, as well as how to adjust the specific position of the flexible screen 30 can all be referred to the relevant technology, and will not be repeated here.

[0027] refer to Figure 7 In some embodiments, the first detection element 50 can be disposed within the first housing 10 and opposite to the gear 41. Alternatively, the first detection element 50 can be disposed on the inner wall of the first housing 10, while the gear 41 can be spaced apart from the inner wall of the first housing 10, so that the first detection element 50 and the gear 41 are disposed opposite to each other, thereby detecting the rotation information of the gear 41.

[0028] In some embodiments, the first detection element 50 may be a distance-measuring element disposed on the inner wall of the first housing 10. Therefore, when the gear 41 rotates to the first position, the distance-measuring element is disposed opposite the toothed structure of the gear 41, thereby enabling the distance-measuring element to detect the distance between the end face of the toothed structure and the distance-measuring end of the distance-measuring element, i.e., the first distance. When the gear 41 rotates to the second position, the distance-measuring element is disposed opposite the tooth gap of the gear 41, thereby enabling the detection of a second distance that is greater than the first distance.

[0029] Based on the above arrangement, as the gear 41 rotates, the distance measured by the distance measuring element changes periodically, so that the rotation information of the gear 41 can be determined based on the change in the distance detected by the distance measuring element.

[0030] Optionally, the distance measuring element may be a laser distance measuring element, a distance sensor or other components, and of course, may also be other components, which are not specifically limited herein. The laser assembly can emit light within a small angle range.

[0031] It should be noted here that the distance measured by the laser ranging element is different for the distance between the tooth structure and the tooth gap. The principle of the laser ranging element is to emit a beam of laser, which reaches the surface of the object to be measured and returns to the laser ranging element to be received. The measured distance is calculated by calculating the time difference between the emission and reception.

[0032] Assume that in the initial state, the position corresponding to the laser ranging element is the tooth gap. At this time, the distance obtained by the laser ranging element is A. During the rotation process, the tooth structure is opposite to the laser ranging element. The distance obtained at this time is B. The B value is a relatively fixed value, and the test value error is allowed to be within 0.5. Assuming that the value of B is 3mm, the control system of the electronic device continuously compares each detected distance. If the test distance is between 2.5mm-3.5mm, it is determined that the current detection position is a tooth structure. If the test distance is greater than 3.5mm, it is determined that the current detection position is a tooth gap. When this change is obtained, it is recorded once. In this way, the number of a certain tooth structure can be calculated by accumulating the data difference. At this time, the extended length of the flexible screen 30 is: the product of the number of tooth structures and the tooth spacing.

[0033] refer to Figure 8 In other embodiments, the first detection element 50 can also be arranged on the tooth surface of the rack 22. In this way, when the gear 41 is engaged with the rack 22, as the gear 41 rotates, it will cooperate with the tooth structure of the rack 22 in sequence. At the same time, as the rack 22 moves, the first detection element 50 on the tooth surface of the rack 22 continuously cooperates with the gear 41, so that the position of the rack 22 can be judged according to the triggering of the first detection element 50 by the gear 41, and the second shell 20 can be further judged according to the position of the rack 22, so as to determine the specific position of the flexible screen 30.

[0034] Optionally, the first detection element 50 may include a signal transmitting end 51 and a signal receiving end 52. The two adjacent tooth structures in the rack 22 are respectively a first tooth structure and a second tooth structure. The signal transmitting end 51 may be disposed on the tooth surface of the first tooth structure facing the second tooth structure. Correspondingly, the signal receiving end 52 may be disposed on the tooth surface of the second tooth structure facing the first tooth structure. The signal transmitting end 51 and the signal receiving end 52 are disposed opposite each other. In this way, the signal transmitting end 51 can transmit a detection signal, and the signal receiving end 52 can receive the detection signal.

[0035] Based on the above setting, as the gear 41 rotates, when the tooth structure of the gear 41 moves out from between the first tooth structure and the second tooth structure, the signal between the signal transmitting end 51 and the signal receiving end 52 is connected; when the tooth structure of the gear 41 moves into between the first tooth structure and the second tooth structure, the signal between the signal transmitting end 51 and the signal receiving end 52 is blocked. At this time, the first detection element 50 can send position information to the control system of the electronic device to facilitate adjusting the position of the flexible screen 30, thereby adapting to the picture changes of the flexible screen 30.

[0036] Therefore, the tooth structure on the rack 22 that is engaged with the gear 41 can be determined based on the on-off status of the signal transmitting end 51 and the signal receiving end 52, so that the position of the rack 22 can be known, and then the position of the second shell 20 and the flexible screen 30 can be known based on the position of the rack 22.

[0037] Continue to refer Figure 7 In some embodiments, the electronic device may further include a plurality of second detection elements 60 , the gear 41 includes a plurality of tooth structures, and each tooth structure may be provided with a second detection element 60 ; in addition, the first detection element 50 is provided on the inner wall of the first shell 10 .

[0038] Based on the above settings, when the gear 41 rotates to the first position, the first detection element 50 can be set opposite to the second detection element 60 on the tooth structure; when the gear 41 rotates to the second position, the first detection element 50 is set opposite to the second detection element 60 on the tooth structure.

[0039] It should be noted here that as the gear 41 rotates, the second detection element 60 located on the gear 41 rotates along with the gear 41, so that each second detection element 60 can cooperate with the first detection element 50, so as to determine the rotation information of the gear 41 based on the cooperation between the first detection element 50 and the corresponding second detection element 60.

[0040] Furthermore, the gear 41 may include multiple tooth structures, and the second detection element 60 on each tooth structure has a different electromagnetic wave signal. In this way, when the first detection element 50 is arranged relative to the second detection element 60 on different tooth structures, the gear 41 can have different rotation information, so that it can be determined based on different electromagnetic wave signals which second detection element 60 the first detection element 50 is arranged relative to, and then the rotation information of the gear 41 can be judged.

[0041] Optionally, the first detection element 50 may be a laser emitter, and the second detection element 60 may be a photosensitive element. The laser emitter may emit a laser signal, and the photosensitive element may receive the laser signal, so that the rotation information of the gear 41 may be determined by whether the photosensitive element receives the laser signal.

[0042] In the embodiment of the present application, the rotation information of the gear 41 may include a rotation position and a rotation direction. The rotation direction can be used to determine whether the flexible screen 30 is in the folding process or the unfolding process, and the rotation position can be used to determine the specific position of the flexible screen 30.

[0043] The first detection element 50 can assign a positive or negative value to the calculation based on the direction of rotation of the gear 41. For example, when the gear 41 rotates in the forward direction, the electronic device's control system assigns a "+" value to the calculated value. Assuming the fixed spacing between each tooth is 3, the original unfolded length of the flexible screen 30 is L0, and the updated data is L1. The total number of teeth rotated by the first detection element 50 is 10, and the unfolded length of the flexible screen 30 is L1 = +3 * 10. If the rotation direction is reverse, the electronic device's control system assigns a "-" value to the calculated value. For example, when the number of teeth rotated is 20, L1 = -3 * 10. The electronic device's control system updates L0 = L1 + L0, assigning a new value to L0. The forward direction can be the counterclockwise direction of the gear 41, and the reverse direction can be the clockwise direction of the gear 41.

[0044] For example, a tooth structure of gear 41 is defined as the first tooth structure. Gear 41 can rotate counterclockwise from the first tooth structure to the third tooth structure, i.e., rotate two tooth pitches in the counterclockwise direction. Alternatively, gear 41 can rotate clockwise from the first tooth structure to the fourth tooth structure, i.e., rotate three tooth pitches in the clockwise direction. Based on this, the specific position of flexible screen 30 can be determined based on the rotation direction of gear 41 and the number of tooth pitches rotated.

[0045] In some embodiments, along the thickness direction of the electronic device, the first detection element 50 is arranged opposite to the toothed structure of the gear 41 on the side close to the flexible screen 30. Alternatively, the electronic device can be placed on a horizontal surface, and the flexible screen 30 is located at the top of the electronic device. In this case, the first detection element 50 can be arranged near the top of the electronic device to facilitate detection of the rotation information of the gear 41 near the top. Of course, in other embodiments, the first detection element 50 can also be arranged at other positions, which are not specifically limited here.

[0046] As the gear 41 rotates, each second detection element 60 on the gear 41 can pass through the first detection element 50 respectively and receive light from the first detection element 50, causing changes in the characteristics of the second detection element 60 itself, and thus being sensed. Based on the number of second detection elements 60 passing through the first detection element 50, the change in the extended length of the flexible screen 30 can be obtained: the product of the number of changes in the gears 41 and the spacing between the gears 41.

[0047] Furthermore, the first detection element 50 can determine whether the flexible screen 30 is in the folding process or the unfolding process by the direction swept by the gear 41. If it is in the unfolding process, a positive value is assigned to the change amount. For example, if the change amount is 5, then L1=5. Similarly, if it is in the retraction process, then L1=-5.

[0048] In addition, the control system of the electronic device can set a record value L0 of the extended length of the flexible screen 30 and store it in the control system. Assuming that the extended length is recorded as L0, it is in the folded state by default, L0=0. During the continuous extension process, it is continuously refreshed in the form of L0=L0+L1, and the current extended state of the flexible screen 30 can be obtained.

[0049] refer to Figure 7 In some embodiments, the electronic device may further include a third detection element 70 and a fourth detection element 80 . The third detection element 70 is disposed within the first housing 10 ; alternatively, the third detection element 70 may be disposed on the inner wall of the first housing 10 .

[0050] The gear 41 may include multiple tooth structures, each of which may be provided with a fourth detection element 80. In this way, when the third detection element 70 is arranged opposite to the multiple fourth detection elements 80 in sequence in the first direction, the gear 41 rotates in the first direction; when the third detection element 70 is arranged opposite to the multiple fourth detection elements 80 in sequence in the second direction, the gear 41 rotates in the second direction, wherein the first direction is opposite to the second direction.

[0051] Based on the above configuration, the rotation direction of the gear 41 can be determined according to the relative directions of the third detection element 70 and the fourth detection element 80 , so as to determine whether the flexible screen 30 is in the folding process or the unfolding process.

[0052] Optionally, the first direction may be the clockwise direction of the gear 41 , and accordingly, the second direction is the counterclockwise direction of the gear 41 ; or, the first direction may be the counterclockwise direction of the gear 41 , and accordingly, the second direction is the clockwise direction of the gear 41 .

[0053] Exemplarily, each fourth detection element 80 can be provided with a label, and multiple fourth detection elements 80 can be arranged in sequence according to the label, such as 1, 2, 3, 4, 5..., or a, b, c, d, e... and so on. The third detection element 70 can recognize the label on the fourth detection element 80. As the gear 41 rotates, the order in which the third detection element 70 and the multiple fourth detection elements 80 are relative to each other can be known, thereby knowing the rotation direction of the gear 41.

[0054] It should be noted here that the third detection element 70 and the first detection element 50 can be the same detection element or two independent detection elements; the fourth detection element 80 and the second detection element 60 can be the same detection element or two independent detection elements.

[0055] refer to Figure 4 and Figure 5 In some embodiments, the drive assembly 40 may include a shaft 42 that is rotatably disposed within the first housing 10 and extends along a first direction that is perpendicular to the sliding direction and the thickness direction. Alternatively, the shaft 42 may extend along the width direction of the electronic device.

[0056] The driving assembly 40 may include two gears 41 , which are respectively disposed at a first end and a second end of a rotating shaft 42 . Thus, as the rotating shaft 42 rotates, the two gears 41 may be driven to rotate synchronously.

[0057] In addition, the rotating shaft 42 may also be connected to a rotation driving member so as to drive the rotating shaft 42 to rotate through the rotation driving member.

[0058] In some embodiments, the electronic device may include a first detection element 50, which is arranged opposite to the gear 41 located at the first end or the second end of the rotating shaft 42. In this way, the rotation information of the gear 41 at the first end or the gear 41 at the second end can be detected by the first detection element 50, so as to know the position of the flexible screen 30 during the folding or unfolding process.

[0059] In other embodiments, the electronic device may include two first detection elements 50, which are respectively arranged opposite to the gears 41 located at the first end and the second end of the rotating shaft 42. In this way, the rotation information of the gears 41 at the first end and the second end can be detected respectively by the two first detection elements 50, so as to know the position of the flexible screen 30 during the folding or unfolding process.

[0060] It should be noted here that the detection data of the two first detection elements 50 can be verified with each other to improve detection accuracy and reduce detection errors.

[0061] refer to Figure 3 、 Figure 4 and Figure 9 In some embodiments, the second shell 20 may be provided with a support plate 21, which is used to support the flexible screen 30 to prevent the flexible screen 30 from sinking, and the support plate 21 is connected to the flexible screen 30 to drive the flexible screen 30 to move through the support plate 21.

[0062] The second shell 20 can be provided with two racks 22. Along the thickness direction, the two racks 22 can be respectively arranged on the side of the support plate 21 away from the flexible screen 30. Along the first direction, the two racks 22 are respectively located at the first end and the second end of the support plate 21. Correspondingly, the two racks 22 are distributed at the first end and the second end of the rotating shaft 42 and mesh with the gears 41.

[0063] Based on the above settings, the two gears 41 can be respectively engaged with the two racks 22, and the two racks 22 drive the flexible screen 30 to move through the support plate 21, thereby improving the force uniformity of the support plate 21 to prevent the flexible screen 30 from being twisted due to uneven force, thereby ensuring smooth movement and normal display of the flexible screen 30.

[0064] To sum up, the electronic device in the embodiment of the present application can detect the specific position of the flexible screen 30 during the folding or unfolding process in real time, and control the retracted area of ​​the flexible screen 30 by judging the position of the flexible screen 30 so that the retracted area no longer displays the image, thereby achieving the effect of reducing energy consumption. Moreover, the position of the flexible screen 30 can be used to adjust the picture ratio or picture content of the visible area of ​​the flexible screen 30 in real time, so that the display picture of the flexible screen 30 follows the changes during the folding or unfolding of the electronic device.

[0065] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An electronic device, characterized in that: include: A first housing, a second housing, a flexible screen, a drive assembly, and a first detection element; The first shell is slidably connected to the second shell; Along the thickness direction of the electronic device, the flexible screen is provided on one side of the first shell and the second shell; The driving assembly is arranged in the first housing, the driving assembly includes a gear, and the second housing is provided with a rack extending along the sliding direction and meshing with the gear; The first detection element is arranged opposite to the gear, and the first detection element is used to detect the rotation information of the gear, and obtain the position of the flexible screen during the folding or unfolding process based on the rotation information of the gear.

2. The electronic device according to claim 1, wherein The first detection element is disposed in the first housing.

3. The electronic device according to claim 2, wherein: The first detection element is a distance measuring element, and the distance measuring element is arranged on the inner wall of the first shell; When the gear is rotated to the first position, the distance measuring element is arranged opposite to the tooth structure of the gear; When the gear is rotated to the second position, the distance measuring element is arranged opposite to the tooth gap of the gear.

4. The electronic device according to claim 1, wherein: The first detection element is disposed on the tooth surface of the rack.

5. The electronic device according to claim 4, characterized in that The first detection element includes a signal transmitting end and a signal receiving end; The two adjacent tooth structures in the rack are respectively a first tooth structure and a second tooth structure; The signal transmitting end is provided on the tooth surface of the first tooth-shaped structure facing the second tooth-shaped structure, and the signal receiving end is provided on the tooth surface of the second tooth-shaped structure facing the first tooth-shaped structure, and the signal transmitting end and the signal receiving end are arranged opposite to each other; When the tooth structure of the gear moves out from between the first tooth structure and the second tooth structure, the signal between the signal transmitting end and the signal receiving end is connected; When the tooth structure of the gear moves into between the first tooth structure and the second tooth structure, the signal between the signal transmitting end and the signal receiving end is blocked.

6. The electronic device according to claim 1, wherein: The electronic device further includes a plurality of second detection elements, the gear includes a plurality of tooth structures, and each of the tooth structures is provided with the second detection element; The first detection element is provided on the inner wall of the first shell; When the gear rotates to the first position, the first detection element is arranged opposite to the second detection element on the tooth structure; When the gear is rotated to the second position, the first detecting element is arranged opposite to the tooth gap of the gear.

7. The electronic device according to claim 6, wherein: The gear includes a plurality of tooth structures, and the second detection element on each tooth structure has a different electromagnetic wave signal; When the first detection element is disposed opposite to the second detection element on different tooth structures, the gears have different rotation information.

8. The electronic device according to claim 6, wherein: The first detection element is a laser emitter, and the second detection element is a photosensor.

9. The electronic device according to claim 1 or 7, characterized in that: The rotation information includes a rotation position and a rotation direction.

10. The electronic device according to any one of claims 1 to 8, characterized in that: Along the thickness direction, the first detection element is arranged opposite to the tooth structure of the gear close to the flexible screen.

11. The electronic device according to any one of claims 1 to 8, characterized in that: The electronic device further includes a third detection element and a plurality of fourth detection elements; The third detection element is disposed in the first housing; The gear includes a plurality of tooth structures, and each of the tooth structures is provided with the fourth detection element; When the third detection element is sequentially arranged opposite to the plurality of fourth detection elements in a first direction, the gear rotates in the first direction; When the third detection element is sequentially arranged opposite to the plurality of fourth detection elements in the second direction, the gear rotates in the second direction; The first direction and the second direction are opposite.

12. The electronic device according to any one of claims 1 to 8, characterized in that: The driving assembly includes a rotating shaft, which is rotatably disposed in the first housing and extends along a first direction, wherein the first direction is perpendicular to the sliding direction and the thickness direction respectively; The driving assembly includes two gears, which are respectively arranged at the first end and the second end of the rotating shaft; The electronic device includes a first detection element, which is arranged opposite to the gear located at the first end or the second end of the rotating shaft; Alternatively, the electronic device includes two first detection elements, and the two first detection elements are respectively arranged opposite to the gears located at the first end and the second end of the rotating shaft.

13. The electronic device according to claim 12, wherein: The second shell is provided with a support plate, the support plate is used to support the flexible screen, and the support plate is connected to the flexible screen; The second shell is provided with two racks, and along the thickness direction, the two racks are respectively arranged on the side of the support plate away from the flexible screen, and along the first direction, the two racks are respectively located at the first end and the second end of the support plate, and the two racks are respectively engaged with the gears at the first end and the second end of the rotating shaft.

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