A foldable electronic device and a rotating mechanism

Abstract

This application discloses a foldable electronic device and a rotating mechanism, including a first housing, a second housing, a support base, a first swing arm, a second swing arm, and a first support plate. The first housing has a first mounting groove, and a first limiting part is provided in the first mounting groove. The first swing arm has a second limiting part. The first support plate has a first abutting part and a second abutting part. The first swing arm is slidably and rotatably connected to the first mounting groove. When the foldable electronic device is in a folded state, the first abutting part is opposite to the first limiting part, and the second limiting part is opposite to the second abutting part. When the support base is subjected to an external impact force, the second abutting part abuts against the second limiting part, and the first abutting part abuts against the first limiting part. This prevents the first support plate and the first housing from sliding downwards and prevents the display screen from being squeezed and malfunctioning.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and more particularly to a foldable electronic device and a rotating mechanism. Background Technology

[0002] With the development of technology, various electronic devices have become indispensable products in daily life and production. Among them, foldable electronic devices have gradually become a development trend due to their advantages of larger display area and portability.

[0003] However, current foldable electronic devices are prone to display failure when subjected to impacts from drops, as the display is compressed. Summary of the Invention

[0004] The foldable electronic device and rotating mechanism provided in this application can reduce or avoid pressure on the display screen when subjected to drop impact, thereby improving the reliability of the display screen.

[0005] This application provides a foldable electronic device, including: a first housing, a second housing, a support base, a first swing arm, a second swing arm, and a first support plate. The support base is disposed between the first housing and the second housing. The opposite sides of the first swing arm are respectively connected to the first housing and the support base. The opposite sides of the second swing arm are respectively connected to the second housing and the support base. The foldable electronic device includes an unfolded state and a folded state.

[0006] The first housing includes a first middle frame and a first mounting block. The first middle frame has a first mounting groove, and the first mounting block is fixed within the first mounting groove. The first mounting block has a first sliding groove. The second housing includes a second middle frame and a second mounting block. The second middle frame has a second mounting groove, and the second mounting block is fixed within the second mounting groove. The second mounting block has a second sliding groove.

[0007] One side of the first swing arm is slidably and rotatably connected to the first housing, and the other side of the first swing arm is rotatably connected to the support base. Specifically, the first swing arm includes a first rotating part and a first sliding part fixedly connected. The first rotating part is rotatably connected to the support base via a first mounting shaft, and the first sliding part is slidably and rotatably connected to a first sliding groove. One side of the second swing arm is slidably and rotatably connected to the second housing, and the other side of the second swing arm is rotatably connected to the support base. Specifically, the second swing arm includes a second rotating part and a second sliding part fixedly connected. The second rotating part is rotatably connected to the support base via a second mounting shaft, and the second sliding part is slidably and rotatably connected to a second sliding groove.

[0008] The first support plate is slidably and rotatably connected to both the first housing and the first swing arm. Specifically, the first support plate is slidably and rotatably connected to both the first mounting block and the first swing arm.

[0009] Foldable electronic devices typically include a display screen, which comprises a first display unit, a third display unit, and a second display unit connected in sequence. The first display unit is fixed to a first housing, the second display unit is fixed to a second housing, and the third display unit is opposite to the rotating mechanism. More specifically, the first display unit is opposite to the support base and the first support plate, respectively, and the third display unit is not fixed to the support base and the first support plate.

[0010] When the foldable electronic device switches between an unfolded and folded state, the display screen unfolds or folds accordingly. Both the first and second display units are fixed, so they do not bend. The third display unit bends or unfolds as the foldable electronic device changes state. When the foldable electronic device is in the unfolded state, the third display unit bends into a teardrop shape. At this time, if the support base is subjected to an external impact force, the first housing will move a considerable distance towards the support base, causing the third display unit to be crushed and fail, ultimately leading to the failure of the entire display screen.

[0011] To address the aforementioned issues, this application provides a first limiting portion within a first mounting groove; a second limiting portion within a first swing arm; and a first abutting portion and a second abutting portion within a first support plate. When the foldable electronic device is in a folded state, the first abutting portion faces the first limiting portion, and the second limiting portion faces the second abutting portion. The first abutting portion facing the first limiting portion means either that the first abutting portion is in direct contact with the first limiting portion, or that there is a gap between the first abutting portion and the first limiting portion. Similarly, the second limiting portion facing the second abutting portion means either that the second limiting portion is in direct contact with the second abutting portion, or that there is a gap between the second limiting portion and the second abutting portion.

[0012] If there is a gap between the first abutment and the first limiting part, the first housing and the second housing are folded relative to each other, and the bearing base is subjected to an external impact force, the first housing, the first support plate, the first swing arm, and the bearing base are arranged sequentially from top to bottom, and the second housing, the second support plate, the second swing arm, and the bearing base are arranged sequentially from top to bottom. When the bearing base is subjected to an external impact force, the first swing arm is supported by the first mounting shaft, and the first swing arm will not slide downward. However, the first housing slides and rotates to connect with the first swing arm, and the first support plate slides and rotates to connect with the first housing and the first swing arm, so both the first housing and the first support plate slide downward relative to the first swing arm. When the first support plate slides downward, the second abutment abuts against the second limiting part. When the first housing slides downward, the first abutment abuts against the first limiting part.

[0013] It is understandable that if the first and second shells are folded relative to each other, and the supporting base is not subjected to external impact, the second abutment part has already contacted the second limiting part, and the first abutment part has already contacted the first limiting part. Then, after the supporting base is subjected to external impact, the first shell and the first support plate will tend to move downwards. At this time, the second abutment part and the second limiting part will abut against each other, generating a holding force, and the first limiting part and the first abutment part will abut against each other, generating a holding force. This prevents the first shell and the first support plate from moving downwards.

[0014] After the second abutting part abuts against the second limiting part, and the first abutting part abuts against the first limiting part, the relative positions of the first housing, the first support plate, the first swing arm, and the bearing base are fixed. That is, both the first housing and the first support plate stop sliding down. Therefore, the third display part will not be squeezed, thereby preventing the third display part from failing, and ultimately preventing the entire display screen from failing.

[0015] Understandably, when the bearing base is subjected to external impact, the second abutment first contacts the second limiting part, at which point the bearing base, the first swing arm, and the first support plate are relatively fixed. Then, the first limiting part contacts the first abutment. Because the bearing base, the first swing arm, and the first support plate have already formed a single unit, when the first housing moves downward, the impact force can be instantly transmitted from the first support plate through the first swing arm to the bearing base, thereby stopping the first housing from moving. This prevents the impact force of the first housing from failing to be transmitted to the first swing arm and the bearing base, thus causing all the impact force of the first housing to act on the first support plate, and prevents damage to the first support plate.

[0016] In some embodiments, the first limiting portion includes the inner wall surface of the first mounting groove, and the first abutting portion includes the surface of the first support plate. That is, the structure of the first mounting groove itself serves as the first limiting portion, and the structure of the first support plate itself serves as the first abutting portion. This prevents the display screen from being squeezed and also simplifies the structure of the foldable electronic device.

[0017] In some embodiments, a first sliding groove is provided within a first mounting groove, and a first swing arm is slidably and rotatably connected to the first sliding groove; a first limiting part is provided within the first sliding groove. The first swing arm is located between the bottom surface of the first support plate and the first sliding groove; the first support plate has a first protrusion, which, when the foldable electronic device is in a folded state, penetrates the first swing arm along its thickness direction and extends into the first sliding groove; the first protrusion has a first abutting part. This increases the contact area between the first housing and the first support plate, making the force on the first housing and the first support plate more balanced, thereby reducing damage to the first housing and the first support plate when the foldable electronic device is dropped. In addition, the first limiting part and the first abutting part cooperate within the first sliding groove to prevent the display screen from being squeezed. This saves space and does not affect the relative movement of the first swing arm and the first housing.

[0018] In some embodiments, a first limiting groove is provided within the first sliding groove, the first limiting part includes the inner wall surface of the first limiting groove, and the first abutting part includes the surface of the first protrusion. That is, both the first limiting part and the first abutting part are surface structures, which are simple in structure and easy to process.

[0019] In some embodiments, the first housing includes a first middle frame and a first mounting block. The first middle frame is provided with a first mounting groove. The first mounting block is fixed in the first mounting groove and is provided with a first sliding groove. A first limiting groove is provided on the bottom surface of the first sliding groove.

[0020] In some embodiments, the first swing arm is provided with a first abutment groove, and a second limiting part is provided within the first abutment groove; the first support plate is provided with a second protrusion, and when the foldable electronic device is in a folded state, at least a portion of the second protrusion extends into the first abutment groove; the second protrusion is provided with a second abutment. The second limiting part and the second abutment cooperate inside the first abutment groove to prevent the display screen from being squeezed, resulting in a compact structure, saving space, and not affecting the relative movement of the first swing arm and the first support plate.

[0021] In some embodiments, the second limiting portion includes the inner wall surface of the first abutting groove, and the second abutting portion includes the surface of the second protrusion. That is, both the second limiting portion and the second abutting portion are surface structures, which are simple in structure and easy to process.

[0022] In some embodiments, the first limiting portion and the first abutting portion are parallel. Both the first limiting portion and the first abutting portion are surface structures. By setting the first limiting portion and the first abutting portion to be parallel to each other, the first housing and the second housing are folded relative to each other, and when the supporting base is subjected to external impact force, the first limiting portion and the first abutting portion are in surface contact. The contact area between the first housing and the first support plate is large, which can increase the force balance of the first housing and the first support plate, and the pressure on the first housing and the first support plate is relatively small, making the first housing and the first support plate less prone to damage. In addition, the contact stability between the first housing and the first support plate is strong, which can also prevent the first housing and the first support plate from relative wobbling, thereby increasing the structural stability of the foldable electronic device.

[0023] In some embodiments, the first limiting portion is parallel to the reference plane. The first abutting portion is also parallel to the reference plane. When the foldable electronic device is in a folded state and the support base is subjected to an impact force, if the downward sliding direction of the first housing is parallel to the thickness direction of the support base, the impact force generated by the first limiting portion on the first abutting portion is vertically downward, and the supporting force exerted by the first abutting portion on the first limiting portion is vertically upward. The impact force and the supporting force can cancel each other out. Therefore, the downward sliding tendency of the first housing can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0024] In some embodiments, when the first housing and the second housing are folded relative to each other, the first limiting portion faces the second housing. The reference surface is parallel to the plane containing the thickness direction and the length direction of the first housing. That is, the first limiting portion is inclined downward relative to the reference surface. The first abutting portion is also inclined downward relative to the reference surface. On the one hand, the contact area between the first limiting portion and the first abutting portion can be increased. This further increases the stability of the contact between the first housing and the first support plate, further improves the force balance between the first housing and the first support plate, and further reduces the risk of damage to the first housing and the first support plate.

[0025] Secondly, when the foldable electronic device is in a folded state and the support base is subjected to an impact, if the downward sliding direction of the first housing is tilted relative to the thickness direction of the support base, then when the first limiting part and the first abutting part come into contact, the impact force generated by the first limiting part on the first abutting part is tilted downward, while the supporting force exerted by the first abutting part on the first limiting part is tilted upward. The supporting force can counteract the impact force. Therefore, the downward sliding tendency of the first housing can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0026] In some embodiments, the included angle b between the first limiting portion and the reference surface satisfies the following condition: 0 degrees < b ≤ 45 degrees. Firstly, this increases the contact area between the first limiting portion and the first abutting portion, thereby increasing the stability of the contact between the first housing and the first support plate. Secondly, it ensures sufficient abutment force between the first housing and the first support plate, preventing the first housing from sliding relative to the first support plate.

[0027] In some embodiments, the second limiting portion and the second abutting portion are parallel. By setting both the second limiting portion and the second abutting portion to be surface structures, and making them parallel, the first housing and the second housing are folded relative to each other. When the support base is subjected to external impact, the second limiting portion and the second abutting portion are in surface contact, which increases the force balance of the first support plate and the first swing arm. Furthermore, the pressure on the first support plate and the first swing arm is relatively small, making them less prone to damage. In addition, the strong stability of the contact between the first support plate and the first swing arm prevents relative swaying, increasing the structural stability of the foldable electronic device.

[0028] In some embodiments, the second limiting portion is parallel to a reference plane, which is parallel to the plane containing the thickness direction and length direction of the first housing. The second abutting portion is also parallel to the reference plane. When the foldable electronic device is in a folded state, the external impact force on the support base is parallel to the thickness direction of the support base, while the thickness direction of the first housing is perpendicular to the thickness direction of the support base. When the foldable electronic device is in a folded state and the support base is subjected to an impact force, if the downward sliding direction of the first support plate is parallel to the thickness direction of the support base, then when the second limiting portion and the second abutting portion abut, the impact force exerted by the second abutting portion on the second limiting portion is vertically downward, and the supporting force generated by the second limiting portion on the second abutting portion is vertically upward. The supporting force and the impact force can cancel each other out. Therefore, the downward sliding tendency of the first support plate can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0029] In some embodiments, when the first and second housings are folded relative to each other, the second limiting portion is inclined relative to the reference surface and faces the second housing. The reference surface is parallel to the plane containing the thickness direction and the length direction of the first housing. That is, both the second limiting portion and the second abutment portion are inclined downwards. Firstly, this increases the contact area between the second limiting portion and the second abutment portion, reducing the pressure on the first support plate and the first swing arm. Therefore, the force per unit area on the first support plate and the first swing arm is reduced, further lowering the risk of damage to the first support plate and the first swing arm. Secondly, when the foldable electronic device is in a folded state and the support base is subjected to an impact force, if the downward sliding direction of the first support plate is inclined relative to the thickness direction of the support base, then when the second limiting portion and the second abutment portion come into contact, the impact force applied by the second abutment portion to the second limiting portion is inclined downwards, and the supporting force generated by the second limiting portion on the second abutment portion is inclined upwards. This supporting force can counteract the impact force. Thus, the downward sliding tendency of the first support plate can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0030] In some embodiments, the included angle α between the second limiting portion and the reference surface satisfies the following condition: 0 degrees < α ≤ 45 degrees. Firstly, this increases the contact area between the second limiting portion and the second abutting portion, thereby increasing the stability of the contact between the first support plate and the first swing arm. Secondly, it ensures sufficient abutment force between the first support plate and the first swing arm, preventing the first support plate from sliding relative to the first swing arm.

[0031] In some embodiments, the foldable electronic device further includes a second support plate, which is slidably and rotatably connected to a second mounting block of the second arm and the second housing. A portion of the third display unit is also opposite to the second support plate, but the third display unit is not fixedly connected to the second support plate. When the foldable electronic device is in a folded state and the support base is subjected to an external impact force, the second housing will also move a large distance towards the support base, which will cause the third display unit to be squeezed, ultimately causing the entire display screen to fail. Therefore, an abutment structure can also be provided between the second housing, the second support plate, and the second arm, referencing the first housing, the first support plate, and the first arm.

[0032] Specifically, a third limiting part is provided in the second mounting groove. A fourth limiting part is provided in the second swing arm, extending into the second mounting groove. A third abutting part and a fourth abutting part are provided in the second support plate. When the first and second housings are folded relative to each other, the third abutting part and the third limiting part face each other; this facing includes situations with a very small gap and direct contact. The fourth limiting part and the fourth abutting part face each other; this facing includes situations with a very small gap and direct contact.

[0033] When the first and second housings are folded relative to each other, and the supporting base is subjected to an external impact force, both the second housing and the second support plate slide downwards or have a tendency to slide downwards. At this time, the fourth abutment part abuts against the fourth limiting part, and the third abutment part abuts against the third limiting part, fixing the relative positions of the second housing, the second support plate, the second swing arm, and the supporting base. That is, both the second housing and the second support plate stop sliding down. Therefore, the third display unit will not be squeezed, thereby preventing the third display unit from failing, and ultimately preventing the entire display screen from failing.

[0034] In some embodiments, the third limiting portion includes the side surface of the second mounting groove, and the third abutting portion includes the side surface of the second support plate. That is, the structure of the second mounting groove itself serves as the third limiting portion, and the structure of the second support plate itself serves as the third abutting portion. This prevents the display screen from being squeezed and also simplifies the structure of the foldable electronic device.

[0035] In some embodiments, a second sliding groove is provided within the second mounting slot, and the second swing arm is slidably and rotatably connected to the second sliding groove; a third limiting part is provided within the second sliding groove. A second support plate is located between the bottom surfaces of the second swing arm and the second sliding groove; the second support plate has a third protrusion that penetrates the second swing arm and extends into the second sliding groove; the third protrusion has a third abutting part. This increases the contact area between the second housing and the second support plate, making the force on the second housing and the second support plate more balanced, thereby reducing damage to the second housing and the second support plate when the foldable electronic device is dropped. Furthermore, the third limiting part and the third abutting part cooperate within the second sliding groove to prevent the display screen from being squeezed. This saves space and does not affect the relative movement of the second swing arm and the second housing.

[0036] In some embodiments, a second limiting groove is provided within the second sliding groove, a third limiting portion includes the side surface of the second limiting groove, and a third abutting portion includes the end face of a third protrusion. That is, both the third limiting portion and the third abutting portion are surface structures, which are simple in structure and easy to process.

[0037] In some embodiments, the second housing includes a second middle frame and a second mounting block. The second middle frame is provided with a second mounting groove. The second mounting block is fixed in the second mounting groove and is provided with a second sliding groove. A second limiting groove is provided on the bottom surface of the second sliding groove.

[0038] In some embodiments, the second swing arm is provided with a second abutment groove, and a fourth limiting portion is provided within the second abutment groove; the second support plate is provided with a fourth protrusion, at least a portion of which extends into the second abutment groove; the fourth protrusion is provided with a fourth abutment portion. The fourth limiting portion and the fourth abutment portion cooperate within the second abutment groove to prevent the display screen from being squeezed, resulting in a compact structure, saving space, and without affecting the relative movement of the second swing arm and the second support plate.

[0039] In some embodiments, the fourth limiting portion includes the bottom surface of the second abutting groove, and the fourth abutting portion includes the end face of the fourth protrusion. That is, both the fourth limiting portion and the fourth abutting portion are surface structures, which are simple in structure and easy to process.

[0040] In some embodiments, the third limiting portion and the third abutting portion are parallel. By setting the third limiting portion and the third abutting portion to be parallel to each other, the first housing and the second housing are folded relative to each other, and when the supporting base is subjected to external impact force, the third limiting portion and the third abutting portion are in surface contact. The contact area between the second housing and the second support plate is large, which can increase the force balance between the second housing and the second support plate, and the pressure on the second housing and the second support plate is relatively small, making the second housing and the second support plate less prone to damage. In addition, the contact stability between the second housing and the second support plate is strong, which can also prevent the second housing and the second support plate from relative wobbling, thereby increasing the structural stability of the foldable electronic device.

[0041] In some embodiments, the third limiting portion is parallel to the reference plane. The third abutment portion is also parallel to the reference plane. When the foldable electronic device is in a folded state and the support base is subjected to an impact force, if the downward sliding direction of the second housing is parallel to the thickness direction of the support base, the impact force generated by the third limiting portion on the third abutment portion is vertically downward, and the supporting force exerted by the third abutment portion on the third limiting portion is vertically upward. The impact force and the supporting force can cancel each other out. Therefore, the downward sliding tendency of the second housing can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0042] In some embodiments, when the first housing and the second housing are folded relative to each other, the third limiting portion is tilted downward relative to the reference surface. The third abutting portion is also tilted downward relative to the reference surface. Firstly, this increases the contact area between the third limiting portion and the third abutting portion. This further increases the stability of the contact between the second housing and the second support plate, further improves the force balance between the second housing and the second support plate, and further reduces the risk of damage to the second housing and the second support plate.

[0043] Secondly, when the foldable electronic device is in a folded state and its supporting base is subjected to an impact, if the downward sliding direction of the second housing is inclined relative to the thickness direction of the supporting base, then when the third limiting part and the third abutting part come into contact, the impact force generated by the third limiting part on the third abutting part is inclined downward, while the supporting force exerted by the third abutting part on the third limiting part is inclined upward. The supporting force can counteract the impact force. Therefore, the downward sliding tendency of the second housing can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0044] In some embodiments, the included angle between the third limiting portion and the thickness direction of the second housing is between 0 degrees and 45 degrees. Firstly, this increases the contact area between the third limiting portion and the third abutting portion, thereby increasing the stability of the contact between the second housing and the second support plate. Secondly, it ensures sufficient abutment force between the second housing and the second support plate, preventing the second housing from sliding relative to the second support plate.

[0045] In some embodiments, the fourth limiting portion and the fourth abutting portion are parallel. By setting both the fourth limiting portion and the fourth abutting portion to be surface structures, and making them parallel, when the first housing and the second housing are folded relative to each other, and the supporting base is subjected to external impact force, the fourth limiting portion and the fourth abutting portion are in surface contact. This increases the force balance of the second support plate and the second swing arm, and the pressure on the second support plate and the second swing arm is relatively small, making them less prone to damage. In addition, the contact stability between the second support plate and the second swing arm is strong, which can also prevent relative swaying between the second support plate and the second swing arm, increasing the structural stability of the foldable electronic device.

[0046] In some embodiments, the fourth limiting portion and the fourth abutting portion are parallel to the reference plane. When the foldable electronic device is in a folded state and the supporting base is subjected to an impact force, the fourth limiting portion and the fourth abutting portion abut against each other. The impact force exerted by the fourth abutting portion on the fourth limiting portion is vertically downward, while the supporting force generated by the fourth limiting portion on the fourth abutting portion is vertically upward. The supporting force and the impact force can cancel each other out. Therefore, the downward sliding tendency of the second support plate can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0047] In some embodiments, when the first and second housings are folded relative to each other, the fourth limiting portion is tilted downward relative to the reference surface. Firstly, this increases the contact area between the fourth limiting portion and the fourth abutment portion, reducing the pressure on both the second support plate and the second swing arm. Consequently, the force per unit area on both the second support plate and the second swing arm is reduced, further lowering the risk of damage to the second support plate and the second swing arm. Secondly, when the foldable electronic device is in a folded state and the support base is subjected to an impact force, if the downward sliding direction of the second support plate is tilted relative to the thickness direction of the support base, then when the fourth limiting portion and the fourth abutment portion come into contact, the impact force exerted by the fourth abutment portion on the fourth limiting portion is tilted downward, while the supporting force generated by the fourth limiting portion on the fourth abutment portion is tilted upward. This supporting force can counteract the impact force. Therefore, the downward sliding tendency of the second support plate can be quickly stopped, reducing the risk of the third display screen being squeezed and improving the reliability of the display screen.

[0048] In some embodiments, the included angle between the fourth limiting portion and the thickness direction of the second housing is between 0 degrees and 45 degrees. Firstly, this increases the contact area between the fourth limiting portion and the fourth abutting portion, thereby increasing the stability of the contact between the second support plate and the second swing arm. Secondly, it ensures sufficient abutment force between the second support plate and the second swing arm, preventing the second support plate from sliding relative to the second swing arm.

[0049] In some embodiments, the first swing arm further includes a first concave cam, which has a first concave-convex portion. The foldable electronic device also includes a first mounting shaft, a first limiting member, a first main elastic member, and a first sliding member. The first sliding member has a first mating portion.

[0050] The first limiting member is fixed to the first mounting shaft. The first main elastic member and the first sliding member are both slidably connected to the first mounting shaft, with both ends of the first main elastic member abutting against the first limiting member and the first sliding member, respectively. Along the axial direction of the first mounting shaft, the first limiting member, the first main elastic member, the first sliding member, the first concave cam, and the first rotating part are arranged sequentially. The first concave-convex part and the first mating part cooperate. The protrusion of the first concave-convex part abuts against the protrusion of the first mating part, and the first main elastic member is in a compressed state. The protrusion of the first concave cam abuts against the concave part of the first mating part, and the first main elastic member is in a pre-compressed state. This provides damping force to the first housing.

[0051] In some embodiments, the first swing arm further includes a second concave cam, which has a second concave-convex portion. The foldable electronic device also includes a first pusher and a first drive member, which are fixedly connected. The first pusher has a second mating portion. The second concave cam is rotatably connected to a first mounting shaft, and both the first pusher and the first drive member are slidably connected to the first mounting shaft. Along the axial direction of the first mounting shaft, the first drive member is located between a first main elastic member and a first limiting member, the second concave cam is located at the end of the first rotating portion away from the first concave cam, and the first pusher is located on the side of the second concave cam away from the first rotating portion. The second concave-convex portion and the second mating portion engage. When the first main elastic member is in a compressed state, the protrusion of the second concave-convex portion and the protrusion of the second mating portion abut against each other. When the first main elastic member is in a pre-compressed state, the protrusion of the second concave-convex portion and the concave portion of the second mating portion abut against each other.

[0052] In some embodiments, the second swing arm further includes a third concave cam and a fourth concave cam, the third concave cam having a third concave-convex portion and the fourth concave cam having a fourth concave-convex portion. The foldable electronic device also includes a second mounting shaft, a second limiting member, a second main elastic member, a second sliding member, a second pushing member, and a second driving member. The second sliding member has a third mating portion, and the second pushing member has a fourth mating portion. The second pushing member and the second driving member are fixedly connected. The second rotating part, the third concave cam, the fourth concave cam, the second mounting shaft, the second limiting member, the second main elastic member, the second sliding member, the second pushing member, and the second driving member cooperate to provide damping force for the second housing. The process by which the second housing obtains damping force can be referred to the first housing.

[0053] In some embodiments, the outer peripheral surface of the first rotating part is provided with a first driving tooth, and the outer peripheral surface of the second rotating part is provided with a second driving tooth. The first driving tooth and the second driving tooth are connected in a driving manner. The first driving tooth and the second driving tooth can mesh directly, or mesh indirectly through a synchronous gear, so that the first housing and the second housing move synchronously.

[0054] This application also provides a rotating mechanism, which includes a support base, a first swing arm, and a first support plate. One side of the first swing arm is connected to the support base, and the other side of the first swing arm is used to connect to the first housing of the foldable electronic device. The first support plate is slidably and rotatably connected to both the first housing and the first swing arm. The first housing is provided with a first limiting portion. The first swing arm is provided with a second limiting portion. The first support plate is provided with a first abutting portion and a second abutting portion. When the foldable electronic device is in a folded state, the first abutting portion is opposite to the first limiting portion, and the second limiting portion is opposite to the second abutting portion. The rotating mechanism is applied to the foldable electronic device, and its technical effect is the same as that of the foldable electronic device described above, and will not be repeated here.

[0055] In some embodiments, the first housing is provided with a first mounting groove, a first mounting block is fixed in the first mounting groove, the first mounting block is provided with a first sliding groove, and the bottom surface of the first sliding groove is provided with a first limiting groove. A first swing arm is slidably and rotatably connected to the first sliding groove, and the first swing arm is located between the first support plate and the bottom surface of the first sliding groove. The first support plate is provided with a first protrusion on the side facing the first swing arm. When the foldable electronic device is in a folded state, the first protrusion penetrates the first swing arm along the thickness direction of the first swing arm, passes through the first sliding groove, and extends into the first limiting groove. When the foldable electronic device is in a folded state, the surface of the first support plate and the inner wall surface of the first mounting groove are opposite each other, and the surface of the first protrusion and the inner wall surface of the first limiting groove are opposite each other. The first limiting part includes the inner wall surface of the first mounting groove and the inner wall surface of the first limiting groove, and the first abutting part includes the surface of the first support plate and the surface of the first protrusion.

[0056] In some embodiments, the first swing arm is provided with a first abutment groove, and the first support plate is provided with a second protrusion. When the foldable electronic device is in a folded state, at least a portion of the second protrusion extends into the first abutment groove, and the surface of the second protrusion faces the inner wall surface of the first abutment groove. The second limiting portion includes the inner wall surface of the first abutment groove, and the second abutment portion includes the surface of the second protrusion. Attached Figure Description

[0057] Figure 1 This is a schematic diagram of the foldable electronic device provided in this application in a folded state.

[0058] Figure 2 This is a schematic diagram of the unfolded state of the foldable electronic device provided in the embodiments of this application.

[0059] Figure 3 This is a schematic diagram of the main body of the foldable electronic device provided in the embodiments of this application.

[0060] Figure 4 yes Figure 3 The diagram shows the structure of the first and second shells of the main body.

[0061] Figure 5 yes Figure 3 The diagram shows a portion of the split structure of the rotating mechanism.

[0062] Figure 6 yes Figure 5 The diagram shows the structure of the first swing arm of the rotating mechanism.

[0063] Figure 7 yes Figure 5 The diagram shows the structure of the second swing arm of the rotating mechanism.

[0064] Figure 8 yes Figure 5A partial structural schematic diagram of the first support plate of the rotating mechanism shown in the diagram from another perspective.

[0065] Figure 9 yes Figure 5 A partial structural schematic diagram of the second support plate of the rotating mechanism shown from another perspective.

[0066] Figure 10 yes Figure 3 The diagram shows a BB-direction cross-sectional view of the foldable electronic device.

[0067] Figure 11 yes Figure 3 The diagram shows a cross-sectional view of the foldable electronic device in the CC direction.

[0068] Figure 12 yes Figure 3 The diagram shows a DD-direction cross-sectional view of the foldable electronic device.

[0069] Figure 13 yes Figure 3 The diagram shows a cross-sectional view of the foldable electronic device in the EE direction.

[0070] Figure 14 yes Figure 3 An enlarged schematic diagram of point A of the main body shown.

[0071] Figure 15 This is a partial structural diagram of the foldable electronic device provided in this application embodiment when it is in a folded state.

[0072] Figure 16 This is a partial cross-sectional view of the foldable electronic device provided in this application when it is in a folded state.

[0073] Figure 17 yes Figure 1 The diagram shows a cross-sectional view of the foldable electronic device along the AA direction.

[0074] Figure 18 yes Figure 17 The diagram shows the structure of the foldable electronic device after it has been subjected to an external impact.

[0075] Figure 19 This is a diagram showing the state changes of a foldable electronic device in a folded state when subjected to external impact.

[0076] Figure 20 This is a simplified structural diagram of the first housing, the first support plate, and the first swing arm of the foldable electronic device provided in this application embodiment when it is in a folded state.

[0077] Figure 21This is a simplified structural diagram of the second housing, the second support plate, and the second swing arm of the foldable electronic device provided in this application embodiment when it is in a folded state.

[0078] Figure 22 This is a simplified structural diagram of the first support plate and the first swing arm of the foldable electronic device provided in this application embodiment when it is in a folded state and subjected to external impact force.

[0079] Figure 23 This is a simplified structural diagram of another first support plate and first swing arm provided in this application embodiment when the foldable electronic device is in a folded state and subjected to external impact force.

[0080] Figure 24 This is a simplified structural diagram of the first support plate and the first housing of the foldable electronic device provided in this application embodiment when it is in a folded state and subjected to external impact force.

[0081] Figure 25 This is a simplified structural diagram of another first support plate and first housing provided in this application embodiment when the foldable electronic device is in a folded state and subjected to external impact force.

[0082] Figure 26 This is a cross-sectional view of the foldable electronic device provided in another embodiment of this application when it is in a folded state.

[0083] Figure 27 yes Figure 5 The diagram shows a partial structural schematic of the rotating mechanism.

[0084] Explanation of reference numerals in the attached figures

[0085] 1000 - Foldable electronic device, 1200 - Main body, 100 - Rotating mechanism, 10 - First swing arm, 11 - First rotating part, 111 - First concave cam, 112 - Second concave cam, 113 - First drive tooth, 12 - First sliding part, 121 - First sliding surface, 122 - Second sliding surface, 123 - First sliding end face, 13 - First abutment groove, 131 - Bottom surface of the first groove, 14 - First guide slider, 10a - Second swing arm, 11a - Second rotating part, 111a - Third concave cam, 112a - Fourth concave cam, 113a - Second drive tooth, 12a - Second sliding part, 13a - Second abutment groove, 131a - Bottom surface of the second groove, 14a - Second guide slider, 20 - First support plate, 2 1-Third support surface, 22-First setting surface, 23-First side surface, 24-Second side surface, 201-First protrusion, 25-First protrusion, 251-First guide groove, 252-First end face, 26-First clearance groove, 27-First connecting block, 271-First sliding hole, 28-First arc-shaped block, 281-First arc-shaped groove, 29-Second protrusion, 291-Second end face, 20a-Second support plate, 21a-Fourth support surface, 22a-Second setting surface, 23a-Third side surface, 24a-Fourth side surface, 201a-Second protrusion, 25a-Third protrusion, 251a-Second guide groove, 252a-Third end face, 26a-Second clearance groove, 27a-Second connecting block, 271a-Second sliding hole 28a-Second arc-shaped block, 281a-Second arc-shaped groove, 29a-Fourth protrusion, 291a-Fourth end face, 30-Third support plate, 31-Fifth support surface, 32-Third setting surface, 40-Bearing base, 41-First mounting shaft, 42-Second mounting shaft, 50-First main swing arm, 51-First sliding shaft, 50a-Second main swing arm, 51a-Second sliding shaft, 60-First limiting member, 61-Second limiting member, 62-First main elastic member, 63-Second main elastic member, 64-First sliding member, 65-Second sliding member, 66-First pushing member, 67-Second pushing member, 68-First driving member, 69-Second driving member, 70-First connecting member, 71-Second connecting member, 72-Third connecting member 73-First synchronous gear, 74-Second synchronous gear, 75-First mating part, 76-Second mating part, 77-Third mating part, 78-Fourth mating part, 79-Auxiliary elastic element, 200-First housing, 210-First middle frame, 211-First bearing member, 212-First bearing plate, 213-Second bearing plate, 214-First mounting groove, 215-Side side of first groove, 220-First middle plate, 221-First support surface, 230-First mounting block, 231-First sliding groove, 232-First limiting groove, 233-First rotating groove, 234-First slider, 240-Side side of second groove, 300-Second housing, 310-Second middle frame, 311-Second bearing member, 312-Third bearing plate313-Fourth bearing plate, 314-Second mounting groove, 315-Side of the third groove, 320-Second middle plate, 321-Second support surface, 330-Second mounting block, 331-Second sliding groove, 332-Second limiting groove, 333-Second rotating groove, 334-Second slider, 340-Side of the fourth groove, 400-First limiting part, 500-Second limiting part, 400a-Third limiting part, 500a-Fourth limiting part, 600-First supporting part, 700-Second supporting part, 600a-Third supporting part, 700a-Fourth supporting part, 1300-Display screen, 1310-First display part, 1320-Second display part, 1330-Third display part, M-Reference surface. Detailed Implementation

[0086] The embodiments of this application are described below with reference to the accompanying drawings.

[0087] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the foldable electronic device 1000 provided in this application in a folded state. Figure 2 This is a schematic diagram of the unfolded state of the foldable electronic device 1000 provided in the embodiments of this application.

[0088] Figure 1 The foldable electronic device 1000 shown has a folding angle of 0 degrees. Figure 2 The unfolding angle of the foldable electronic device 1000 shown is 180 degrees. The foldable electronic device 1000 includes, but is not limited to, cellphones, notebook computers, tablet computers, personal digital assistants, wearable devices, or mobile devices. In this embodiment, an inward-folding cellphone is used as an example for illustration. An inward-folding cellphone is one in which the display screen 1300 is located inside the folded screen.

[0089] It should be noted that slight deviations are allowed in the angles illustrated in the embodiments of this application. For example, Figure 1 The folding angle of the foldable electronic device 1000 shown can deviate from 0 degrees by ±5 degrees. Figure 2 The unfolding angle of the foldable electronic device 1000 shown is 180 degrees, with a deviation of ±5 degrees.

[0090] For ease of description, the width direction of the foldable electronic device 1000 is defined as the X-axis direction, the length direction of the foldable electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z-axis direction. The X-axis, Y-axis, and Z-axis directions are all perpendicular to each other.

[0091] A foldable electronic device 1000 includes a main body 1200 and a display screen 1300, with the display screen 1300 mounted on the main body 1200. The display screen 1300 is a flexible screen and includes a display surface and a mounting surface, which are positioned opposite to each other. The display surface is used to display text, images, and videos. The display screen 1300 includes a first display unit 1310, a second display unit 1320, and a third display unit 1330. The third display unit 1330 is located between the first display unit 1310 and the second display unit 1320.

[0092] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the main body 1200 of the foldable electronic device 1000 provided in this application embodiment. The main body 1200 includes a first housing 200, a second housing 300, and a rotation mechanism 100. The rotation mechanism 100 is mounted on the first housing 200 and the second housing 300 to realize a rotational connection between the first housing 200 and the second housing 300. The first housing 200 and the second housing 300 can rotate relative to each other through the rotation mechanism 100, so that the main body 1200 can switch between a folded state and an unfolded state.

[0093] The display screen 1300 is mounted on the main body 1200, and its mounting surface is fixedly connected to the main body 1200. Specifically, the first display unit 1310 is fixedly mounted on the first housing 200, and the second display unit 1320 is fixedly mounted on the second housing 300. The rotating mechanism 100 is positioned opposite to the third display unit 1330 to allow the display screen 1300 to bend. The third display unit 1330 is not fixed to the rotating mechanism 100. The side of the first housing 200 and the second housing 300 facing away from the display screen 1300 is the outer side of the electronic device, and the side supporting the display screen 1300 is the inner side.

[0094] In some embodiments, reference is made to Figure 4 , Figure 4 yes Figure 3The diagram shows the structure of the first housing 200 and the second housing 300 of the main body 1200. The first housing 200 is provided with a first mounting groove 214. Specifically, the first housing 200 includes a first middle frame 210, a first back plate (not shown), a first middle plate 220, and a first mounting block 230. The first back plate and the first middle plate 220 are respectively fixed to opposite sides of the first middle frame 210 along the Z-axis. The first middle frame 210, the first back plate, and the first middle plate 220 form a first receiving cavity (not shown), which is used to install circuit boards, batteries, and other devices. The surface of the first middle plate 220 facing away from the first receiving cavity is a first support surface 221, which is used to support the first display unit 1310. The first display unit 1310 is stacked and fixed to the first support surface 221.

[0095] A first support member 211 is provided on the side of the first middle frame 210 facing the second housing 300. The first support member 211 includes a first support plate 212 and a second support plate 213, which are connected in an L-shape and form a first mounting groove 214. The first mounting groove 214 includes a first groove side surface 215, which is parallel to the Z-axis direction and serves as a first limiting part 400. The first groove side surface 215 is part of the inner wall surface of the first mounting groove 214, that is, the first limiting part 400 includes the inner wall surface of the first mounting groove 214.

[0096] The first mounting block 230 can be a wedge-shaped block, and it is fixed within the first mounting groove 214. The first mounting block 230 has a first sliding groove 231, a first rotating groove 233, and a first slider 234, all of which are used to connect with the rotating mechanism 100. The first sliding groove 231 has a first limiting groove 232, which includes a second groove side surface 240 parallel to the Z-axis direction. The second groove side surface 240 is a first limiting portion 400. The second groove side surface 240 is part of the inner wall surface of the first limiting groove 232, meaning the first limiting portion 400 includes the inner wall surface of the first limiting groove 232.

[0097] Continue to refer to Figure 4The second housing 300 has the same structure as the first housing 200, and the second housing 300 is provided with a second mounting groove 314. Specifically, the second housing 300 includes a second middle frame 310, a second back plate (not shown), a second middle plate 320, and a second mounting block 330. The second back plate and the second middle plate 320 are respectively fixed to the two opposite sides of the second middle frame 310 along the Z-axis. The second middle frame 310, the second back plate, and the second middle plate 320 form a second receiving cavity (not shown), which is used to install circuit boards, batteries, and other devices. The surface of the second middle plate 320 facing away from the second receiving cavity is a second support surface 321, which is used to support the second display unit 1320. The second display unit 1320 is stacked and fixed to the second support surface 321.

[0098] The second middle frame 310 has a second support member 311 on the side facing the first housing 200. The second support member 311 includes a third support plate 312 and a fourth support plate 313. The second support plate 312 and the second support plate 313 are connected in an L-shape and form a second mounting groove 314. The second mounting groove 314 includes a third groove side surface 315, which is parallel to the Z-axis direction and serves as a third limiting part 400a. The second mounting block 330 can be a wedge-shaped block and is fixed in the second mounting groove 314. The second mounting block 330 has a second sliding groove 331, a second rotating groove 333, and a second slider 334. The second sliding groove 331, the second rotating groove 333, and the second slider 334 are all used to connect with the rotating mechanism 100. The second sliding groove 331 is provided with a second limiting groove 332. The second limiting groove 332 includes a fourth groove side 340 (not shown in the figure). The fourth groove side 340 is parallel to the Z-axis direction and is a third limiting part 400a.

[0099] In some embodiments, reference is made to Figure 5 , Figure 5 yes Figure 3 The diagram shows a portion of the split structure of the rotating mechanism 100. The rotating mechanism 100 includes a first swing arm 10, a second swing arm 10a, a first support plate 20, a second support plate 20a, a third support plate 30, a bearing base 40, a first main swing arm 50, and a second main swing arm 50a. The first main swing arm 50 is provided with a first sliding shaft 51, and the second main swing arm 50a is provided with a second sliding shaft 51a.

[0100] In this embodiment, reference Figure 6 , Figure 6 yes Figure 5The diagram shows the structure of the first swing arm 10 of the rotating mechanism 100. The first swing arm 10 includes a first rotating part 11 and a first sliding part 12 fixedly connected. The first sliding part 12 includes a first sliding surface 121, a second sliding surface 122, and a first sliding end face 123. Along the thickness direction of the first swing arm 10, the first sliding surface 121 and the second sliding surface 122 are arranged opposite to each other. The first sliding end face 123 is connected between the first sliding surface 121 and the second sliding surface 122, and the first sliding end face 123 is located on the side of the first sliding part 12 away from the first rotating part 11.

[0101] The first sliding portion 12 is provided with a first abutting groove 13. The first abutting groove 13 penetrates the first sliding surface 121, the second sliding surface 122, and the first sliding end surface 123. The first abutting groove 13 includes a first groove bottom surface 131, which is parallel to the first sliding end surface 123. The first sliding surface 121 is provided with a first guide slider 14, which is used to connect with the first support plate 20. The first groove bottom surface 131 is a second limiting portion 500. The first groove bottom surface 131 is part of the inner wall surface of the first abutting groove 13, that is, the second limiting portion 500 includes the inner wall surface of the first abutting groove 13.

[0102] refer to Figure 7 , Figure 7 yes Figure 5 The diagram shows the structure of the second swing arm 10a of the rotating mechanism 100. The second swing arm 10a has the same structure as the first swing arm 10, and includes a second rotating part 11a and a second sliding part 12a. The second sliding part 12a includes a third sliding surface, a fourth sliding surface, and a second sliding end surface. The second sliding part 12a is provided with a second abutting groove, which includes a second groove bottom surface 13a parallel to the second sliding end surface. The second groove bottom surface 131a is a fourth limiting part 500a. A second guide slider 14a protrudes from the third sliding surface and is used to connect with the second support plate 20a.

[0103] refer to Figure 5 and Figure 8 , Figure 8 yes Figure 5This is a partial structural schematic diagram of the first support plate 20 of the rotating mechanism 100 shown from another perspective. The first support plate 20 includes a third support surface 21, a first mounting surface 22, a first side surface 23, and a second side surface 24. The third support surface 21 and the first mounting surface 22 are arranged opposite to each other along the Z-axis, and the first side surface 23 and the second side surface 24 are opposite to each other along the X-axis. The first side surface 23 connects one side of the third support surface 21 and the first mounting surface 22, and the second side surface 24 connects the other side of the third support surface 21 and the first mounting surface 22. The first side surface 23 is a first abutment 600, and the first side surface 23 is a part of the surface of the first support plate 20, that is, the first abutment 600 includes the surface of the first support plate 20. The third support surface 21 is used to support the third display unit 1330.

[0104] The first mounting surface 22 is provided with a first clearance groove 26, a first connecting block 27, a first arc-shaped block 28, and a first protrusion 201. The first protrusion 201 is provided with a first guide groove 251, which is used to connect with the first guide slider 14 of the first swing arm 10. The first connecting block 27, the first clearance groove 26, and the first arc-shaped block 28 are arranged sequentially along the Y-axis. The first connecting block 27 protrudes from the first mounting surface 22 and is provided with a first sliding hole 271, which is used to connect with the first main swing arm 50. The first clearance groove 26 is recessed in the first mounting surface 22.

[0105] The first protrusion 201 includes a first protrusion 25 and a second protrusion 29. There are two first guide grooves 251, one located on the first protrusion 25, and the other (not shown) has a portion located on the first protrusion 25 and a portion on the second protrusion 29. Both the first protrusion 25 and the second protrusion 29 protrude from the bottom surface of the first clearance groove 26. The second protrusion 29 is substantially flush with the first mounting surface 22, and the first protrusion 25 extends beyond the first clearance groove 26, meaning the first protrusion 25 is higher than the first mounting surface 22. The first protrusion 25 and the second protrusion 29 are arranged and fixedly connected along the X-axis, meaning they are integrally formed, facilitating processing. In other embodiments, the first protrusion 25 and the second protrusion 29 may also be staggered along the X-axis. The first arc-shaped block 28 is provided with a first arc-shaped groove 281, which is used to connect with the first slider 234 of the first mounting block. The first protrusion 201 can both cooperate with the first housing 200 and the first swing arm 10 to prevent the display screen 1300 from being squeezed, and also enable the first support plate 20 to slide and rotate with the first swing arm 10. This reduces the number of parts in the rotating mechanism, which is beneficial for the lightweight and thin design of the foldable electronic device 1000.

[0106] The first protrusion 25 includes a first end face 252, and the second protrusion 29 includes a second end face 291. The first end face 252 and the second end face 291 are opposite to each other along the X-axis. The end of the first protrusion 25 opposite to the first end face 252 and the end of the second protrusion 29 opposite to the second end face 291 are fixedly connected. The first end face 252 is a first abutment 600, which is a part of the surface of the first protrusion 25, that is, the first abutment 600 includes the surface of the first protrusion 25. The second end face 291 is a second abutment 700, which is a part of the surface of the second protrusion 29, that is, the second abutment 700 includes the surface of the second protrusion 29.

[0107] refer to Figure 5 and Figure 9 , Figure 9 yes Figure 5 This is a partial structural schematic diagram of the second support plate 20a of the rotating mechanism 100 shown from another perspective. The structure of the second support plate 20a is the same as that of the first support plate 20. The second support plate 20a includes a fourth support surface 21a, a second setting surface 22a, a third side surface 23a, and a fourth side surface 24a. The third side surface 23a is a third abutment part 600a. The fourth support surface 21a and the second setting surface 22a are opposite to each other along the Z-axis, and the third side surface 23a and the fourth side surface 24a are opposite to each other along the X-axis. The fourth support surface 21a is used to support the third display part 1330. The second setting surface 22a is provided with a second connecting block 27a, a second clearance groove 26a, a second arc-shaped block 28a, and a second protrusion 201a. The second protrusion 201a is provided with a second guide groove 251a, which is used to connect with the second guide slider 14a of the second swing arm. The second connecting block 27a is provided with a second sliding hole 271a, which is used to connect with the second main swing arm 50a. The second arc-shaped block 28a is provided with a second arc-shaped groove 281a, which is used to connect with the second slider 334 of the second mounting block.

[0108] The second protrusion 201a includes a third protrusion 25a and a fourth protrusion 29a. There are two second guide grooves 251a, one of which is located on the third protrusion 25a, and the other (not shown) has a portion located on the third protrusion 25a and a portion located on the fourth protrusion 29a. The third protrusion 25a includes a third end face 252a, and the fourth protrusion 29a includes a fourth end face 291a. The third end face 252a and the fourth end face 291a are opposite to each other along the X-axis. The end of the third protrusion 25a opposite to the third end face 252a and the end of the fourth protrusion 29a opposite to the fourth end face 291a are fixedly connected. The third end face 252a is a third abutment 600a, and the fourth end face 291a is a fourth abutment 700a.

[0109] The third support plate 30 includes a fifth support surface 31 and a third mounting surface 32 disposed opposite to each other along the Z-axis. The fifth support surface 31 is used to support the third display unit 1330.

[0110] In some embodiments, reference is made to Figure 10 , Figure 10 yes Figure 3 The diagram shows a BB-direction cross-sectional view of the foldable electronic device 1000. A support base 40 is disposed between the first housing 200 and the second housing 300. The opposite sides of the first main swing arm 50 are connected to the first housing 200 and the support base 40, respectively, and the opposite sides of the second main swing arm 50a are connected to the second housing 300 and the support base 40, respectively. Specifically, one side of the first main swing arm 50 can be rotatably connected to the first rotating groove 233 of the first mounting block 230 via a pivot. The other side of the first main swing arm 50 can be slidably and rotatably connected to the support base 40 via a sliding groove. One side of the second main swing arm 50a can be rotatably connected to the second rotating groove 333 of the second mounting block 330 via a pivot, and the other side of the second main swing arm 50a can be rotatably connected to the support base 40 via a sliding groove.

[0111] refer to Figure 11 , Figure 11 yes Figure 3 The diagram shows a CC-direction cross-sectional view of the foldable electronic device 1000. The first swing arm 10 has its opposite sides connected to the first housing 200 and the support base 40, respectively. The second swing arm 10a has its opposite sides connected to the second housing 300 and the support base 40, respectively. Specifically, the support base 40 has a first mounting shaft 41 and a second mounting shaft 42, both of which are parallel to the Y-axis direction. The first mounting shaft 41 and the second mounting shaft 42 are arranged at intervals along the X-axis direction. The first rotating part 11 is rotatably connected to the support base 40 via the first mounting shaft 41, and the first sliding part 12 is slidably and rotatably connected to the first sliding groove 231. The second rotating part 11a is rotatably connected to the support base 40 via the second mounting shaft 42, and the second sliding part 12a is slidably and rotatably connected to the second sliding groove 331.

[0112] refer to Figure 10 One side of the first support plate 20 is slidably and rotatably connected to the first main swing arm 50 and the first swing arm 10, and one side of the second support plate 20a is slidably and rotatably connected to the second main swing arm 50a and the second swing arm 10a. Specifically, the first sliding shaft 51 of the first main swing arm 50 extends into the first sliding hole 271 of the first connecting block 27, and the first sliding shaft 51 can slide within the first sliding hole 271. The second sliding shaft 51a of the second main swing arm 50a extends into the second sliding hole 271a of the second connecting block 27a, and the second sliding shaft 51a can slide within the second sliding hole 271a.

[0113] refer to Figure 12,refer to Figure 12 , Figure 12 yes Figure 3 The diagram shows a DD-direction cross-sectional view of the foldable electronic device 1000. The first guide slider 14 of the first swing arm 10 extends into the first guide groove 251 of the first protrusion, and the first guide slider 14 can slide within the first guide groove 251. The second guide slider 14a of the second swing arm 10a extends into the second guide groove 251a of the third protrusion, and the second guide slider 14a can slide within the second guide groove 251a.

[0114] refer to Figure 13 , Figure 13 yes Figure 3 The diagram shows a cross-sectional view of the foldable electronic device 1000 along the EE direction. The first support plate 20 is slidably and rotatably connected to the first housing 200 on one side, and the second support plate 20a is slidably and rotatably connected to the second housing 300 on the other side. Specifically, the first slider 234 of the first mounting block 230 extends into the first arcuate groove 281 of the first arcuate block 28, and the first slider 234 can slide within the first arcuate groove 281. The second slider 334 of the second mounting block 330 extends into the second arcuate groove 281a of the second arcuate block 28a, and the second slider 334 can slide within the second arcuate groove 281a.

[0115] The third support plate 30 is fixedly connected to the bearing base 40, and the third mounting surface 32 of the third support plate 30 faces the bearing base 40. The third support plate 30 is located between the first support plate 20 and the second support plate 20a. The first support plate 20 covers a portion of the first main swing arm 50 and a portion of the first swing arm 10, and the second support plate 20a covers a portion of the second main swing arm 50a and a portion of the second swing arm 10a. The third support plate 30 covers another portion of the first main swing arm 50, another portion of the second main swing arm 50a, another portion of the first swing arm 10, and another portion of the second swing arm 10a.

[0116] The first main swing arm 50, the second main swing arm 50a, the first swing arm 10, and the second swing arm 10a can be a swing arm group, and the number of swing arm groups can be one or more. In some embodiments, the rotating mechanism 100 includes three swing arm groups, which are arranged at intervals along the Y-axis. A first mounting block 230 and a second mounting block 330 constitute a connecting group, and the number of connecting groups is the same as the number of swing arm groups. In some embodiments, the rotating mechanism 100 includes three connecting groups. The three swing arm groups are respectively connected to the three connecting groups. In other embodiments, the number of swing arm groups and connecting groups can also be one, two, or four, etc., and this application is not limited thereto. In other embodiments, the first main swing arm 50 and the second main swing arm 50a constitute the first swing arm group, and the first swing arm 10 and the second swing arm 10a constitute the second swing arm group, and the number of the first swing arm group and the second swing arm group can be different.

[0117] The rotating mechanism 100 enables the foldable electronic device 1000 to switch between a folded state and an unfolded state. This is described in detail below.

[0118] refer to Figure 11 When the foldable electronic device 1000 is in the unfolded state, the first abutment groove 13 and the first limiting groove 232 are opposite to each other and connected along the Z-axis, and a portion of the first protrusion 25 is located within the first abutment groove 13. The remaining portion of the first protrusion 25 and the second protrusion 29 are located within the first mounting groove 214 and outside the first abutment groove 13 and the first limiting groove 232. Similarly, the second abutment groove 13a and the second limiting groove 332 are opposite to each other and connected along the Z-axis, and a portion of the third protrusion 25a is located within the second abutment groove 13a. The remaining portion of the third protrusion 25a and the fourth protrusion 29a are located within the second mounting groove 314 and outside the second abutment groove 13a and the second limiting groove 332.

[0119] refer to Figure 14 , Figure 14 yes Figure 3 The diagram shows an enlarged view of point A of the main body 1200. The foldable electronic device 1000 is in its unfolded state, with the first housing 200 and the second housing 300 unfolded relative to each other, i.e., the first housing 200 and the second housing 300 are arranged sequentially along the X-axis. The first mounting groove 214 and the second mounting groove 314 are connected to form a receiving groove, and the supporting base 40 is completely located within the receiving groove. The first middle plate 220, the first support plate 20, the third support plate 30, the second support plate 20a, and the second middle plate 320 are arranged sequentially along the X-axis. The first support surface 221, the third support surface 21, the fifth support surface 31, the fourth support surface 21a, and the second support surface 321 are arranged sequentially along the Z-axis to form a total support surface. The display screen 1300 is disposed on the total support surface. Specifically, the first display part 1310 is bonded and fixed to the first support surface 221, and the second display part 1320 is bonded and fixed to the second support surface 321. The third display unit 1330 is opposite to the third support surface 21, the fifth support surface 31, and the fourth support surface 21a. As a result, when the foldable electronic device 1000 is in the unfolded state, the display screen 1300 can remain flat.

[0120] During the transition of the foldable electronic device 1000 from an unfolded state to a folded state, the first swing arm 10 rotates relative to the support base 40 and slides and rotates relative to the first housing 200. The first main swing arm 50 rotates relative to the first housing 200, slides and rotates relative to the support base 40, and the first swing arm 10 and the first main swing arm 50 drive the first housing 200 to rotate relative to the support base 40. Simultaneously, the second swing arm 10a rotates relative to the support base 40 and slides and rotates relative to the second housing 300, the second main swing arm 50a rotates relative to the second housing 300, slides and rotates relative to the support base 40, and the second swing arm 10a and the second main swing arm 50a drive the second housing 300 to rotate relative to the support base 40, thereby switching the first housing 200 and the second housing 300 to the folded state.

[0121] During the movement of the first housing 200, the first swing arm 10, and the first main swing arm 50, the first guide slider 14 of the first swing arm 10 slides within the first guide groove 251 of the first support plate 20, the first sliding shaft 51 of the first main swing arm 50 slides within the first sliding hole 271 of the first support plate 20, and the first slider 234 of the first housing 200 slides within the first arc-shaped groove 281 of the first support plate. This causes the first support plate 20 to slide and rotate relative to the first housing 200, relative to the first main swing arm 50, and relative to the first swing arm 10. During the movement of the second housing 300, the second swing arm 10a, and the second main swing arm 50a, the second support plate 20a slides and rotates relative to the second housing 300, relative to the second main swing arm 50a, and relative to the second swing arm 10a.

[0122] refer to Figure 15 and Figure 16 , Figure 15 This is a partial structural diagram of the foldable electronic device 1000 provided in this application embodiment when it is in a folded state. Figure 16This is a partial cross-sectional view of the foldable electronic device 1000 provided in this application embodiment when it is in a folded state. When the foldable electronic device 1000 is in a folded state, the first support plate 20 is located in the first mounting groove 214, and the first swing arm 10 is located between the bottom surface of the first support plate 20 and the first sliding groove 231. A portion of the first swing arm 10 extends into the first clearance groove 26, making the structure of the rotating mechanism 100 more compact. The first protrusion 25 passes through the first abutment groove 13 and extends into the first limiting groove 232. The first groove side 215 and the first side 23 are opposite to each other, and the second groove side 240 and the first end face 252 are opposite to each other. The first groove side 215 and the second groove side 240 are both first limiting portions 400, and the first side 23 and the first end face 252 are both first abutment portions 600, that is, the two first limiting portions 400 are opposite to the first abutment portions 600 respectively. The first supporting portion 600 and the first limiting portion 400 can be understood as either having a gap between them or being in direct contact. However, under normal circumstances, due to processing and assembly reasons, there is a gap h2 between the first supporting portion 600 and the first limiting portion 400.

[0123] The second protrusion 29 extends into the first abutment groove 13. The second end face 291 is opposite to the bottom surface 131 of the first groove. The bottom surface 131 of the first groove is the second limiting part 500, and the second end face 291 is the second abutment part 700. The second limiting part 500 and the second abutment part 700 are opposite to each other. The opposite of the second abutment part 700 and the second limiting part 500 can be understood as the second abutment part 700 and the second limiting part 500 having a gap between them, or the second abutment part 700 and the second limiting part 500 being in direct contact. However, under normal circumstances, due to processing and assembly reasons, there is a gap h1 between the second abutment part 700 and the second limiting part 500.

[0124] refer to Figure 17 , Figure 17 yes Figure 1The diagram shows a cross-sectional view of the foldable electronic device 1000 along direction AA. When the foldable electronic device 1000 is in a folded state, the first housing 200 and the second housing 300 are folded relative to each other, that is, the first housing 200 and the second housing 300 are stacked along the Z-axis. The side of the support base 40 away from the display screen 1300 is exposed, forming part of the appearance of the foldable electronic device 1000. The main support surface is located on the inner side of the foldable electronic device 1000. The first support surface 221 and the second support surface 321 are opposite each other along the Z-axis. The third support surface 21 is inclined relative to the first support surface 221, and the fourth support surface 21a is inclined relative to the second support surface 321. The third support surface 21 and the fourth support surface 21a are opposite each other along the Z-axis. The fifth support surface 31 is located between the third support surface 21 and the fourth support surface 21a, and the fifth support surface 31 is perpendicular to the first support surface 221, thus forming a teardrop-shaped screen-accommodating space.

[0125] The display screen is mounted on the main support surface, so the display screen 1300 is also located inside the foldable electronic device 1000 and is bent into a teardrop shape. Specifically, the first display unit 1310 and the second display unit 1320 are opposite each other, and the third display unit 1330 is located within the teardrop-shaped screen space. The third display unit 1330 is bent into a teardrop shape. Of course, the third display unit 1330 can also be bent into other shapes.

[0126] The first housing 200 and the second housing 300 are folded relative to each other, and when the support base 40 is subjected to an external impact force, the support base 40 is located at the bottom of the foldable electronic device 1000. The first housing 200, the first support plate 20, the first swing arm 10 and the support base 40 are arranged in order from top to bottom, and the second housing 300, the second support plate 20a, the second swing arm 10a and the support base 40 are arranged in order from top to bottom.

[0127] refer to Figure 18 , Figure 18 yes Figure 17 The diagram shows the structure of the foldable electronic device after it has been subjected to an external impact. When the support base 40 is subjected to an external impact, the first swing arm 10 is supported by the first mounting shaft 41 and will not slide downwards. However, the first housing 200 slides and rotates to connect with the first swing arm 10, and the first support plate 20 slides and rotates to connect with both the first housing 200 and the first swing arm 10, so both the first housing 200 and the first support plate 20 slide downwards relative to the first swing arm 10. When the first support plate 20 slides downwards, the second abutment 700 abuts against the second limiting portion 500. When the first housing 200 slides downwards, the first abutment 600 abuts against the first limiting portion 400.

[0128] After the first abutting part 600 abuts against the first limiting part 400, the relative positions of the first housing 200, the first support plate 20, the first swing arm 10, and the bearing base 40 are fixed. That is, both the first housing 200 and the first support plate 20 stop sliding down. The downward sliding distance of the first support plate 20 is equal to the width of gap h1, and the downward sliding distance of the first housing 200 is equal to the sum of the widths of gap h1 and gap h2. Both gap h1 and gap h2 are very small, therefore, the third display part 1330 will not be squeezed, thereby preventing the third display part 1330 from malfunctioning, and ultimately preventing the entire display screen 1300 from malfunctioning.

[0129] When the bearing base 40 is subjected to an external impact force, the second abutment part 700 first contacts the second limiting part 500. At this time, the bearing base 40, the first swing arm 10, and the first support plate 20 are relatively fixed. Then, the first limiting part 400 contacts the first abutment part 600. Since the bearing base 40, the first swing arm 10, and the first support plate 20 have already formed an integral state, when the first housing 200 moves downward, the impact force can be instantly transmitted from the first support plate 20 through the first swing arm 10 to the bearing base 40, thereby stopping the first housing 200 from moving. This prevents the impact force of the first housing 200 from failing to be transmitted to the first swing arm 10 and the bearing base 40, thus causing all the impact force of the first housing 200 to act on the first support plate 20, and prevents damage to the first support plate 20.

[0130] It is understandable that if the first housing 200 and the second housing 300 are folded relative to each other, and the supporting base 40 is not subjected to external impact, the second abutment 700 is already in contact with the second limiting part 500, and the first abutment 600 is already in contact with the first limiting part 400. Then, after the supporting base 40 is subjected to external impact, the first housing 200 and the first support plate 20 will tend to move downwards. At this time, the second abutment 700 and the second limiting part 500 will abut against each other, generating a holding force, and the first limiting part 400 and the first abutment 600 will abut against each other, generating a holding force. This prevents the first housing 200 and the first support plate 20 from moving downwards.

[0131] Similarly, when the foldable electronic device 1000 is in a folded state, the third protrusion 25a passes through the second abutment groove 13a and extends into the second limiting groove 332. The third groove side 315 and the third side 23a are opposite each other, the fourth groove side 340 and the third end face 252a are opposite each other, the third groove side 315 and the fourth groove side 340 are both third limiting portions 400a, the third side 23a and the third end face 252a are both third abutment portions 600a, and the third limiting portion 400a and the third abutment portion 600a are opposite each other. A portion of the second swing arm 10a is located in the second clearance groove 26a. The second support plate 20a is located in the second mounting groove 314, and the fourth protrusion 29a extends into the second abutment groove 13a. The second groove bottom surface 131a and the fourth end face 291a are opposite each other, the second groove bottom surface 131a is the fourth limiting portion 500a, and the fourth end face 291a is the fourth abutment portion 700a. That is, the fourth limiting part 500a and the fourth supporting part 700a are opposite each other.

[0132] The cooperation relationship and working principle of the fourth limiting part 500a, the fourth supporting part 700a, the third limiting part 400a, and the third supporting part 600a are the same as those of the second limiting part 500, the second supporting part 700, the first limiting part 400, and the first supporting part 600. Therefore, when the first housing 200 and the second housing 300 are folded relative to each other, and when the supporting base 40 is subjected to external impact, the second housing 300 and the second support plate 20a move downwards by a very small amount or even not at all, preventing the third display part 1330 from being squeezed and avoiding failure of the display screen 1300.

[0133] In this embodiment, the side surface of the first mounting groove 214 and the side surface of the first support plate 20 are used as a set of first limiting parts 400 and first abutting parts 600, which is simple in structure and can prevent the display screen 1300 from being squeezed. Another set of first limiting parts 400 and first abutting parts 600 is formed by using the end face of the first protrusion 25 and the side surface of the first limiting groove 232, which saves space and does not affect the relative movement of the first swing arm 10 and the first housing 200. The first limiting part 400, the first abutting part 600, the second limiting part 500, and the second abutting part 700 are all surface structures, which are simple in structure and easy to process.

[0134] Furthermore, two first limiting portions 400 are respectively opposite to two first abutting portions 600, resulting in a larger contact area between the first support plate 20 and the first housing 200. This increases the force balance between the first support plate 20 and the first housing 200, thereby reducing damage to the first support plate 20 and the first housing 200. Similarly, this embodiment has two third limiting portions 400a and two third abutting portions 600a opposite to each other, resulting in a larger contact area between the second support plate 20a and the second housing 300. This increases the force balance between the second support plate 20a and the second housing 300, thereby reducing damage to the second support plate 20a and the second housing 300.

[0135] In related technologies, refer to Figure 19 , Figure 19 This is a diagram showing the state changes of a foldable electronic device 1000 in a folded state when subjected to an external impact force. Figure 19 Figure (a) shows the state of the foldable electronic device 1000 before it is subjected to an impact. Figure 19 Figure (b) illustrates the state of the foldable electronic device 1000 after being subjected to an impact. When the foldable electronic device 1000 is in a folded state, if it is accidentally dropped and the support base 40 is at the impact point, the support base 40 will be subjected to an impact force. Under the action of the impact force, the first swing arm 10 will slide relative to the first housing 200. The second swing arm 10a will slide relative to the second housing 300. At this time, both the first housing 200 and the second housing 300 move towards the support base 40. The first display unit 1310 is fixedly connected to the first housing 200, and the second display unit 1320 is fixedly connected to the second housing 300. Therefore, the first display unit 1310 and the second display unit 1320 also move towards the support base 40. At this time, the third display unit 1330 will be squeezed. This causes the third display unit 1330 to fail, which in turn causes the entire display screen 1300 to fail.

[0136] Compared with related technologies, in this embodiment, when the first support plate 20 slides downward, the second abutment portion 700 moves downward to abut against the second limiting portion 500. When the first housing 200 slides downward, the first abutment portion 600 abuts against the first limiting portion 400. This ensures that the first housing 200 and the first support plate 20 can only slide downward a very small distance, or even not slide downward at all. Similarly, the second housing 300 and the second support plate 20a move downward by a very small amount, or even not at all, which can prevent the third display portion 1330 from being squeezed and avoid the display screen 1300 from malfunctioning.

[0137] In some embodiments, reference is made to Figure 20 , Figure 20This is a simplified structural diagram of the first housing 200, the first support plate 20, and the first swing arm 10 of the foldable electronic device 1000 provided in this application when in a folded state. The second limiting part 500 and the second abutting part 700 are both surface structures. The second limiting part 500 and the second abutting part 700 are parallel; this parallelism includes processing and assembly errors. According to the relationship between pressure and force: F = P * S, where F is the magnitude of the force, P is the pressure, and S is the area of ​​the force application, with F remaining constant, the larger S is, the smaller P is, and vice versa. The larger P is, the greater the force per unit area on the object, and the more easily the object is damaged.

[0138] By setting both the second limiting part 500 and the second supporting part 700 to be surface structures, and with the second limiting part 500 and the second supporting part 700 parallel to each other, the first housing 200 and the second housing 300 are folded relative to each other. When the supporting base 40 is subjected to external impact force, the second limiting part 500 and the second supporting part 700 are in surface contact. According to the above-mentioned pressure and force relationship, under the condition that the impact force remains unchanged, the contact area between the first support plate 20 and the first swing arm 10 is larger, which can increase the force balance of the first support plate 20 and the first swing arm 10, and the pressure on the first support plate 20 and the first swing arm 10 is smaller, making the first support plate 20 and the first swing arm 10 less prone to damage. In addition, the contact stability between the first support plate 20 and the first swing arm 10 is stronger, which can also prevent the first support plate 20 and the first swing arm 10 from wobbling relative to each other, thus increasing the structural stability of the foldable electronic device 1000.

[0139] In other embodiments, the second limiting portion 500 and the second abutting portion 700 are configured as point contact structures. Specifically, the second limiting portion 500 includes a first hemispherical protrusion (not shown), and the second abutting portion 700 may include a second hemispherical protrusion (not shown). When the first housing 200 and the second housing 300 are folded relative to each other, and the supporting base 40 is subjected to an external impact force, the first hemispherical protrusion and the second hemispherical protrusion are in point contact.

[0140] In other embodiments, the second limiting portion 500 and the second abutting portion 700 are configured as a line contact structure. Specifically, the second limiting portion 500 includes a first arc-shaped protrusion (not shown), and the second abutting portion 700 may include a second arc-shaped protrusion (not shown). When the first housing 200 and the second housing 300 are folded relative to each other, and the supporting base 40 is subjected to an external impact force, the first arc-shaped protrusion and the second arc-shaped protrusion are in line contact.

[0141] In some embodiments, reference continues to be made to Figure 20Both the first limiting part 400 and the first supporting part 600 are surface structures and are parallel to each other, including processing and assembly errors. This allows the first housing 200 and the second housing 300 to fold relative to each other, and when the supporting base 40 is subjected to external impact, the first limiting part 400 and the first supporting part 600 are in surface contact. Based on the aforementioned relationship between pressure and force, it can be seen that, under constant impact force, the contact area between the first housing 200 and the first support plate 20 is larger, which increases the force balance between the first housing 200 and the first support plate 20, and the pressure on the first housing 200 and the first support plate 20 is smaller, making them less prone to damage. Furthermore, the strong stability of the contact between the first housing 200 and the first support plate 20 prevents relative wobbling, increasing the structural stability of the foldable electronic device 1000.

[0142] In other embodiments, the first limiting portion 400 and the first abutting portion 600 are configured as point contact structures. Specifically, the first limiting portion 400 includes a first hemispherical protrusion (not shown), and the first abutting portion 600 may include a second hemispherical protrusion (not shown). When the first housing 200 and the second housing 300 are folded relative to each other, and the supporting base 40 is subjected to an external impact force, the first hemispherical protrusion and the second hemispherical protrusion are in point contact.

[0143] In other embodiments, the first limiting portion 400 and the first abutting portion 600 are configured as a line contact structure. Specifically, the first limiting portion 400 includes a first arc-shaped protrusion (not shown), and the first abutting portion 600 may include a second arc-shaped protrusion (not shown). When the first housing 200 and the second housing 300 are folded relative to each other, and the supporting base 40 is subjected to an external impact force, the first arc-shaped protrusion and the second arc-shaped protrusion are in line contact.

[0144] Similarly, refer to Figure 21 , Figure 21 This is a simplified structural diagram of the second housing 300, the second support plate 20a, and the second swing arm 10a when the foldable electronic device 1000 provided in this application is in a folded state. The fourth limiting part 500a and the fourth abutting part 700a are both surface structures and are parallel. Therefore, under constant impact force, the contact area between the second support plate 20a and the second swing arm 10a is larger, which increases the force balance between the second support plate 20a and the second swing arm 10a, and the pressure on the second support plate 20a and the second swing arm 10a is smaller, making them less prone to damage. Furthermore, the contact stability between the second support plate 20a and the second swing arm 10a is stronger, preventing relative swaying and increasing the structural stability of the foldable electronic device 1000.

[0145] Both the third limiting part 400a and the third abutting part 600a are surface structures and are parallel to each other; this parallelism includes machining and assembly errors. Under constant impact force, the contact area between the second housing 300 and the second support plate 20a is larger, which increases the force balance between the second housing 300 and the second support plate 20a, and the pressure on both the second housing 300 and the second support plate 20a is smaller, making them less prone to damage. Furthermore, the contact stability between the second housing 300 and the second support plate 20a is stronger, preventing relative wobbling between them.

[0146] In some embodiments, reference is made to Figure 22 , Figure 22 This is a simplified structural diagram of the first support plate 20 and the first swing arm 10 of the foldable electronic device 1000 in a folded state and subjected to an external impact force, according to an embodiment of this application. The second limiting part 500 is parallel to the reference plane M. The second abutting part 700 is also parallel to the reference plane M. The reference plane M is parallel to the plane containing the thickness direction and the length direction of the first housing 200. When the foldable electronic device 1000 is in a folded state and the support base 40 is subjected to an impact force, if the downward sliding direction of the first support plate 20 is parallel to the thickness direction of the support base 40, then when the second limiting part 500 abuts against the second abutting part 700, the impact force F applied by the second abutting part 700 to the second limiting part 500 is vertically downward.

[0147] By setting the second limiting part 500 and the second abutting part 700 to be parallel to the thickness direction of the first housing 200, that is, both the second limiting part 500 and the second abutting part 700 are perpendicular to the thickness direction of the supporting base 40, the second limiting part 500 generates a supporting force F0 on the second abutting part 700, and the supporting force F0 is vertically upward. The supporting force F0 and the impact force F are in opposite directions, and the supporting force F0 and the impact force F can cancel each other out. As a result, the downward sliding tendency of the first support plate 20 can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0148] Similarly, the fourth limiting part 500a is parallel to the reference surface M. The fourth supporting part 700a is also parallel to the reference surface M. As a result, the downward sliding tendency of the second support plate 20a can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0149] In some embodiments, reference is made to Figure 23 , Figure 23This is a simplified structural diagram of another first support plate 20 and first swing arm 10 provided in this application embodiment when the foldable electronic device 1000 is in a folded state and subjected to an external impact force. When the foldable electronic device 1000 is in a folded state, that is, when the first housing 200 and the second housing 300 are folded relative to each other, the second limiting part 500 is inclined relative to the reference surface M, and the second limiting part 500 faces the second housing 300. That is, the second limiting part 500 is inclined downward relative to the reference surface M, and the second abutting part 700 is also inclined downward relative to the reference surface M. Here, inclined downward means that, with Figure 23 Using the direction in the middle as a reference, with the positive Z-axis direction as "right", the negative Z-axis direction as "left", the positive X-axis direction as "up", and the negative X-axis direction as "down", the second limiting part 500 is inclined from the upper left to the lower right. Firstly, this increases the contact area between the second limiting part 500 and the second abutting part 700. Based on the aforementioned relationship between pressure and force, increasing the contact area between the first support plate 20 and the first swing arm 10 reduces the pressure on both the first support plate 20 and the first swing arm 10 while keeping the impact force constant. Therefore, the force per unit area on both the first support plate 20 and the first swing arm 10 decreases, further reducing the risk of damage to the first support plate 20 and the first swing arm 10.

[0150] Secondly, when the foldable electronic device 1000 is in a folded state and the support base 40 is subjected to an impact force, if the downward sliding direction of the first support plate 20 is inclined relative to the thickness direction of the support base 40, then when the second limiting part 500 and the second abutting part 700 come into contact, the impact force F applied by the second abutting part 700 to the second limiting part 500 is inclined downward.

[0151] By setting both the second limiting part 500 and the second supporting part 700 to be tilted downwards, the second limiting part 500 generates a supporting force F0 on the second supporting part 700. This supporting force F0 is tilted upwards and is in the opposite direction to the impact force F, thus counteracting the impact force F. This quickly stops the downward sliding tendency of the first support plate 20, reduces the risk of the third display screen 1300 being squeezed, and improves the reliability of the display screen 1300.

[0152] Similarly, when the foldable electronic device 1000 is in a folded state, that is, when the first housing 200 and the second housing 300 are folded relative to each other, the fourth limiting part 500a is tilted relative to the reference surface M, and the fourth limiting part 500a faces the first housing 200. That is, the fourth limiting part 500a is tilted downward, and the fourth abutting part 700a is also tilted downward relative to the reference surface M. Firstly, the contact area of ​​the second support plate 20a and the second swing arm 10a increases. Under the condition that the impact force remains unchanged, the pressure on the second support plate 20a and the second swing arm 10a is reduced. Therefore, the force per unit area on the second support plate 20a and the second swing arm 10a is reduced, further reducing the risk of damage to the second support plate 20a and the second swing arm 10a. Secondly, the downward sliding tendency of the second support plate 20a can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0153] In some embodiments, reference continues to be made to Figure 23 The included angle α between the second limiting part 500 and the reference surface M satisfies the following condition: 0 degrees < α ≤ 45 degrees. α can specifically be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, and 45°, etc. It can be understood that the second limiting part 500 and the second abutting part 700 are parallel; therefore, the tilting direction and tilting angle of the second abutting part 700 and the second limiting part 500 are the same.

[0154] When the foldable electronic device 1000 is in a folded state and the supporting base 40 is subjected to an external impact force, the first support plate 20 slides towards the first swing arm 10, causing the second limiting part 500 and the second abutting part 700 to come into contact. If both the second limiting part 500 and the second abutting part 700 are inclined surfaces, the supporting force F0 generated by the second limiting part 500 on the second abutting part 700 is perpendicular to the second limiting part 500. The supporting force F0 can be decomposed into a first force F01 and a second force F02. The direction of the first force F01 is parallel to the thickness direction of the first housing 200, and the direction of the second force F02 is parallel to the width direction of the first housing 200. The second force F02 can prevent the first support plate 20 from continuing to slide. If the included angle α is greater than 45 degrees, the second force F02 may be too small, resulting in the first support plate 20 not being able to continue sliding even if the second limiting part 500 and the second abutting part 700 come into contact.

[0155] By setting the tilt angle α of the second limiting part 500 to between 0 degrees and 45 degrees, firstly, the contact area between the second limiting part 500 and the second abutting part 700 can be increased, thereby increasing the stability of the contact between the first support plate 20 and the first swing arm 10. Secondly, sufficient abutment force is provided between the first support plate 20 and the first swing arm 10 to prevent the first support plate 20 from sliding relative to the first swing arm 10.

[0156] Similarly, by setting the tilt angle of the fourth limiting part 500a to between 0 and 45 degrees, firstly, the contact area between the fourth limiting part 500a and the fourth abutting part 700a can be increased, thereby increasing the stability of the contact between the second support plate 20a and the second swing arm 10a. Secondly, sufficient abutment force between the second support plate 20a and the second swing arm 10a can be provided to prevent the second support plate 20a from sliding relative to the second swing arm 10a.

[0157] In some embodiments, reference is made to Figure 24 , Figure 24 This is a simplified structural diagram of the first support plate 20 and the first housing 200 of the foldable electronic device 1000 in a folded state and subjected to an external impact force, according to an embodiment of this application. The first limiting part 400 is parallel to the reference plane M. The first abutting part 600 is also parallel to the reference plane M. When the foldable electronic device 1000 is in a folded state and the support base 40 is subjected to an impact force, if the downward sliding direction of the first housing 200 is parallel to the thickness direction of the support base 40, then the impact force FA generated by the first limiting part 400 on the first abutting part 600 is vertically downward, and the support force FA0 exerted by the first abutting part 600 on the first limiting part 400 is vertically upward. The support force FA0 and the impact force FA can cancel each other out. Thus, the downward sliding tendency of the first housing 200 can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0158] Similarly, the third limiting part 400a is parallel to the reference surface M. The third supporting part 600a is also parallel to the reference surface M. As a result, the downward sliding tendency of the second housing 300 can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0159] In some embodiments, reference is made to Figure 25 , Figure 25 This is a simplified structural diagram of another first support plate 20 and first housing 200 provided in this application embodiment when the foldable electronic device 1000 is in a folded state and subjected to external impact. The first limiting part 400 is inclined relative to the reference surface M, and the first limiting part 400 faces the second housing 300. That is, the first limiting part 400 is inclined downward relative to the reference surface M, and the first abutting part 600 is also inclined downward relative to the reference surface M. Here, "inclined downward" means that when the foldable electronic device 1000 is in a folded state, it is inclined downward. Figure 25Using the direction in the middle as a reference, with the positive Z-axis direction as "right", the negative Z-axis direction as "left", the positive X-axis direction as "up", and the negative X-axis direction as "down", the first limiting part 400 is inclined from the upper left to the lower right. Firstly, this increases the contact area between the first limiting part 400 and the first abutting part 600. This further increases the stability of the contact between the first housing 200 and the first support plate 20, further improves the force balance between the first housing 200 and the first support plate 20, and further reduces the risk of damage to the first housing 200 and the first support plate 20.

[0160] Secondly, when the foldable electronic device 1000 is in a folded state and the support base 40 is subjected to an impact force, if the downward sliding direction of the first housing 200 is inclined relative to the thickness direction of the support base 40, then when the first limiting part 400 and the first abutting part 600 come into contact, the first limiting part 400 generates a downward impact force FA on the first abutting part 600.

[0161] By setting both the first limiting part 400 and the first supporting part 600 to be inclined downwards, the supporting force FA0 provided by the first supporting part 600 to the first limiting part 400 is inclined upwards. The impact force FA and the supporting force FA0 are in opposite directions, and the supporting force FA0 can counteract the impact force FA. As a result, the downward sliding tendency of the first housing 200 can be quickly stopped, reducing the risk of the third display screen 1300 being squeezed and improving the reliability of the display screen 1300.

[0162] Similarly, the third limiting part 400a is inclined downward relative to the reference surface M, and the third supporting part 600a is also inclined downward relative to the reference surface M. This increases the contact area between the third limiting part 400a and the third supporting part 600a. This further increases the stability of the contact between the second housing 300 and the second support plate 20a, further improves the force balance between the second housing 300 and the second support plate 20a, and further reduces the risk of damage to the second housing 300 and the second support plate 20a. It can also quickly stop the downward sliding tendency of the second housing 300, reduce the risk of the third display screen 1300 being squeezed, and improve the reliability of the display screen 1300.

[0163] In some embodiments, reference continues to be made to Figure 25The included angle between the first limiting part 400 and the reference surface M satisfies the following condition: 0 degrees < b ≤ 45 degrees. b can specifically be 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, and 45°, etc. When the foldable electronic device 1000 is in a folded state and the supporting base 40 is subjected to an external impact force, the first housing 200 slides towards the first support plate 20, causing the first limiting part 400 and the first abutting part 600 to abut against each other. If both the first limiting part 400 and the first abutting part 600 are inclined surfaces, the supporting force FA0 provided by the first abutting part 600 to the first limiting part 400 is inclined upwards. This supporting force FA0 can be decomposed into a first force FA01 and a second force FA02. The direction of the first force FA01 is parallel to the thickness direction of the first housing 200, and the direction of the second force FA02 is parallel to the width direction of the first housing 200. The second force FA02 can prevent the first housing 200 from continuing to slide. If the included angle b is greater than 45 degrees, the second force FA02 may be too small, which may result in the first housing 200 continuing to slide even if the first limiting part 400 and the first supporting part 600 come into contact.

[0164] By setting the tilt angle b of the first limiting part 400 to between 0 degrees and 45 degrees, firstly, the contact area between the first limiting part 400 and the first abutting part 600 can be increased, thereby increasing the stability of the contact between the first housing 200 and the first support plate 20. Secondly, sufficient abutment force is provided between the first housing 200 and the first support plate 20 to prevent the first housing 200 from sliding relative to the first support plate 20.

[0165] Similarly, by setting the tilt angle of the third limiting part 400a to between 0 and 45 degrees, the contact area between the third limiting part 400a and the third abutting part 600a can be increased, thereby increasing the stability of the contact between the second housing 300 and the second support plate 20a. Secondly, sufficient abutment force between the second housing 300 and the second support plate 20a can prevent the second housing 300 from sliding relative to the second support plate 20a.

[0166] In another specific embodiment, reference Figure 26 , Figure 26This is a cross-sectional view of the foldable electronic device 1000 in a folded state according to another embodiment of this application. The first support plate 20 and the first swing arm 10 are engaged by a second limiting part 500 and a second abutting part 700. The second limiting part 500 is the bottom surface of the first abutting groove 13, and the second abutting part 700 is the end face of the second protrusion 29. The first support plate 20 and the first housing 200 are engaged by a first limiting part 400 and a first abutting part 600. Specifically, the first limiting part 400 is the side surface of the first mounting groove 214, and the first abutting part 600 is one side surface of the first support plate 20. That is, compared with the above embodiment, in this embodiment, there is only one first limiting part 400 and one first abutting part 600. This simplifies the structural complexity of the foldable electronic device 1000 and prevents the display screen from being squeezed.

[0167] Similarly, the second support plate 20a and the second swing arm 10a are connected by the fourth limiting part 500a and the fourth abutting part 700a. The second support plate 20a and the second housing 300 are connected by the third limiting part 400a and the third abutting part 600a.

[0168] In some embodiments, reference is made to Figure 27 , Figure 27 yes Figure 5 The diagram shows a partial structural schematic of the rotating mechanism 100. The rotating mechanism 100 also includes a first limiting member 60, a second limiting member 61, a first main elastic member 62, a second main elastic member 63, a first sliding member 64, a second sliding member 65, a first pushing member 66, a second pushing member 67, a first driving member 68, and a second driving member 69. The first sliding member 64 and the second sliding member 65 are fixedly connected by a first connecting member 70. The first pushing member 66 and the second pushing member 67 are fixedly connected by a second connecting member 71. The first driving member 68 and the second driving member 69 are fixedly connected by a third connecting member 72, and the third connecting member 72 and the second connecting member 71 are fixedly connected by a fourth connecting member (not shown).

[0169] The first rotating part 11 of the first swing arm 10 is provided with a first concave cam 111 and a second concave cam 112 at both ends. The second rotating part 11a of the second swing arm 10a is provided with a third concave cam 111a and a fourth concave cam 112a at both ends.

[0170] The first concave cam 111 has a first concave-convex portion, the second concave cam 112 has a second concave-convex portion, the third concave cam 111a has a third concave-convex portion, and the fourth concave cam 112a has a fourth concave-convex portion. The first sliding member 64 has a first mating portion 75, the first pushing member 66 has a second mating portion 76, the second sliding member 65 has a third mating portion 77, and the second pushing member 67 has a fourth mating portion 78. The first concave-convex portion to the fourth concave-convex portion, and the first mating portion 75 to the fourth mating portion 78, all include alternately arranged concave portions and protrusions.

[0171] The first swing arm 10, the first mounting shaft 41, the first limiting member 60, the first main elastic member 62, and the first sliding member 64 cooperate to provide damping force for the first housing 200.

[0172] Specifically, the first limiting member 60 is fixed to the first mounting shaft 41, and the first main elastic member 62 and the first sliding member 64 are both slidably connected to the first mounting shaft 41, with the two ends of the first main elastic member 62 abutting against the first limiting member 60 and the first sliding member 64, respectively. The first concave cam 111 and the first rotating part 11 are both rotatably connected to the first mounting shaft 41. Along the axial direction of the first mounting shaft 41, the first limiting member 60, the first main elastic member 62, the first sliding member 64, the first concave cam 111, and the first rotating part 11 are arranged sequentially. The first concave and convex parts and the first mating part 75 are engaged.

[0173] It is understood that the first limiting member 60 can be a retaining ring, which is fixedly engaged with the first limiting member 60. The first main elastic member 62 can be a spring, which is slidably sleeved on the first mounting shaft 41. The first sliding member 64 has a through hole extending along the Y-axis. The first mounting shaft 41 passes through the through hole of the first sliding member 64, the through hole of the first concave cam 111, and the rotation hole of the first rotating part 11, so that the first sliding member 64 is slidably connected to the first mounting shaft 41, and both the first concave cam 111 and the first rotating part 11 are rotatably connected to the first mounting shaft 41.

[0174] When the foldable electronic device 1000 is in the unfolded state, the rotating mechanism 100 is also in the unfolded state, the protrusion of the first concave cam 111 abuts against the concave portion of the first mating part 75, and the first main elastic member 62 is in a pre-compressed state. At this time, the first main elastic member 62 remains in the pre-compressed state to provide a supporting force for the first housing 200 to remain in the unfolded state.

[0175] When the foldable electronic device 1000 switches from the unfolded state to the folded state, the first housing 200 rotates around the support base 40, the first sliding part 12 slides in the first sliding groove 231, the first rotating part 11 and the first concave cam 111 rotate around the first mounting shaft 41. During the rotation of the first concave cam 111, it gradually switches to the point where the protrusion of the first concave part of the first concave cam 111 and the protrusion of the first mating part 75 abut against each other. The first sliding member 64 gradually moves in the negative Y-axis direction to compress one end of the first main elastic member 62. That is, the first main elastic member 62 is in a pre-compressed state to provide damping force for the first housing 200.

[0176] When the foldable electronic device 1000 is in a folded state, the rotating mechanism 100 is in a folded state, the protrusion of the first concave cam 111 and the concave part of the first mating part 75 abut together, and the first main elastic member 62 returns to a pre-compressed state to provide a supporting force for the first housing 200 to remain in the folded state.

[0177] In some embodiments, reference continues to be made to Figure 27 Furthermore, the second concave cam 112, the first pushing member 66, and the first driving member 68 can be used to compress the end of the first main elastic member 62 away from the first sliding member 64, thereby increasing the compression stroke of the first main elastic member 62 and thus increasing the damping force provided to the first housing 200.

[0178] Specifically, the second concave cam 112 is rotatably connected to the first mounting shaft 41, and the first pushing member 66 and the first driving member 68 are both slidably connected to the first mounting shaft 41. Along the axial direction of the first mounting shaft 41, the first driving member 68 is located between the first main elastic member 62 and the first limiting member 60, the second concave cam 112 is located at the end of the first rotating part 11 away from the first concave cam 111, and the first pushing member 66 is located on the side of the second concave cam 112 away from the first rotating part 11. That is, the first driving member 68, the first main elastic member 62, the first sliding member 64, the first concave cam 111, the first rotating part 11, the second concave cam 112, and the first pushing member 66 are arranged sequentially along the axial direction of the first mounting shaft 41. The two ends of the first main elastic member 62 abut against the first sliding member 64 and the first pushing member 66, respectively. The second concave-convex portion and the second mating portion 76 cooperate with each other.

[0179] Understandably, both the first pusher 66 and the first drive member 68 are provided with through holes extending along the Y-axis. The first mounting shaft 41 passes through the through holes of the first pusher 66 and the first drive member 68, so that the first pusher 66 and the first drive member 68 are slidably connected to the first mounting shaft 41. The first mounting shaft 41 passes through the through hole of the second concave cam 112, so that the second concave cam 112 is rotatably connected to the first mounting shaft 41.

[0180] When the foldable electronic device 1000 is in the unfolded state, the protrusion of the second concave-convex part and the concave part of the second mating part 76 abut against each other.

[0181] When the foldable electronic device 1000 switches from the unfolded state to the folded state, the first housing 200 rotates around the support base 40, the first sliding part 12 slides in the first sliding groove 231, and the first rotating part 11 simultaneously drives the first concave cam 111 and the second concave cam 112 to rotate along the first mounting axis 41. During the rotation of the first concave cam 111, the protrusion of the first concave cam 111 gradually switches to abutting against the protrusion of the first mating part 75. During this process, the first sliding member 64 gradually moves in the negative Y-axis direction to compress one end of the first main elastic member 62. Simultaneously, during the rotation of the second concave cam 112, the contact between the protrusion of the second concave cam 112 and the protrusion of the second mating part 76 gradually changes. During this process, the first pushing member 66 gradually moves in the positive Y-axis direction, and the first pushing member 66 drives the first driving member 68 to gradually move in the positive Y-axis direction to compress the other end of the first main elastic member 62, so as to provide damping force for the first main elastic member 62. Both ends of the first main elastic member 62 are compressed synchronously, and the compression stroke of the first main elastic member 62 is doubled. Therefore, the damping force provided by the first main elastic member 62 to the first housing 200 is greatly increased.

[0182] In some embodiments, reference continues to be made to Figure 27 The second rotating part 11a, the third concave cam 111a, the fourth concave cam 112a, the second mounting shaft 42, the second limiting member 61, the second main elastic member 63, the second sliding member 65, the second pushing member 67, and the second driving member 69 cooperate to provide damping force for the second housing 300. The process by which the second housing 300 obtains damping force is the same as the process by which the first housing 200 obtains damping force, and will not be described again. The principle by which the third concave cam 111a ensures that the second main elastic member 63 provides sufficient damping force is the same as the principle by which the first concave cam 111 ensures that the first main elastic member 62 provides sufficient damping force, and the principle by which the fourth concave cam 112a ensures that the second main elastic member 63 provides damping force is the same as the principle by which the second concave cam 112 ensures that the first main elastic member 62 provides sufficient damping force, and will not be described again.

[0183] In some embodiments, reference continues to be made to Figure 27 The damping force can be further increased by using the auxiliary elastic element 79 and the auxiliary shaft (not shown). The number of auxiliary shafts and auxiliary elastic elements 79 can be one, two, three, or four, etc., and this application does not impose any limitation. Specifically, the first connecting element 70 and the third connecting element 72 are slidably connected to opposite ends of the auxiliary shaft, respectively. The auxiliary elastic element 79 is slidably sleeved on the auxiliary shaft.

[0184] When the first sliding member 64 moves along the negative Y-axis and the first driving member 68 moves along the positive Y-axis, the first connecting member 70 is fixedly connected to the first sliding member 64, and the third connecting member 72 is fixedly connected to the first driving member 68. This causes the first connecting member 70 and the first sliding member 64 to move synchronously, and the third connecting member 72 and the first driving member 68 to move synchronously, resulting in the two ends of the auxiliary elastic member 79 being compressed synchronously, thereby increasing the damping force.

[0185] In some embodiments, reference continues to be made to Figure 27 The outer peripheral surface of the first rotating part 11 is provided with a first driving tooth 113, and the outer peripheral surface of the second rotating part 11a is provided with a second driving tooth 113a. The first rotating part 11 is rotatably connected to the first mounting shaft 41, and the second rotating part 11a is rotatably connected to the second mounting shaft 42. The first driving tooth 113 and the second driving tooth 113a are connected in a transmission manner. Thus, the synchronization of the rotation of the first housing 200 and the second housing 300 can be achieved.

[0186] When the first housing 200 rotates around the support base 40, it can drive the second housing 300 to rotate synchronously. When the second housing 300 rotates around the support base 40, it can drive the first housing 200 to rotate synchronously. The following explanation uses the example of the first housing 200 rotating around the support base 40 and driving the second housing 300 to rotate synchronously.

[0187] Specifically, when the first housing 200 rotates around the support base 40, the first rotating part 11 of the first swing arm 10 rotates, and the first driving gear 113 and the second driving gear 113a are connected in a transmission, so that the first rotating part 11 drives the second rotating part 11a of the second swing arm 10a to rotate. The second rotating part 11a drives the second sliding part 12a to slide and rotate, and the second sliding part 12a drives the second housing 300 to rotate, so as to realize the synchronous rotation of the first housing 200 and the second housing 300.

[0188] In some embodiments, the rotating mechanism 100 further includes a support frame (not shown) and N synchronizing gears, where N is an even number, meaning the number of synchronizing gears can be two, four, six, or eight, etc. In one specific embodiment, there are two synchronizing gears. (Continue to refer to...) Figure 27 The two synchronous gears are a first synchronous gear 73 and a second synchronous gear 74. The first synchronous gear 73 and the second synchronous gear 74 mesh with each other, and the first synchronous gear 73 also meshes with the first drive gear 113, and the second synchronous gear 74 also meshes with the second drive gear 113a.

[0189] A support frame is disposed between the first rotating part 11 and the second rotating part 11a, and both the first mounting shaft 41 and the second mounting shaft 42 pass through the support frame. The fixed shafts extending from both ends of the synchronizing gear are respectively connected to the support frame and the second connecting member 71.

[0190] When the first housing 200 rotates around the support base 40, the first rotating part 11 of the first swing arm 10 rotates. The power of the first rotating part 11 is transmitted to the second rotating part 11a through the first drive gear 113, the first synchronous gear 73, the second synchronous gear 74, and the second drive gear 113a, causing the second rotating part 11a of the second swing arm 10a to rotate. The second rotating part 11a drives the second sliding part 12a to slide and rotate, and the second sliding part 12a drives the second housing 300 to rotate, realizing the synchronous rotation of the first housing 200 and the second housing 300.

[0191] In other embodiments, the rotating mechanism 100 may not be equipped with a synchronizing gear, but instead achieves synchronous transmission through direct meshing of the first driving gear 113 and the second driving gear 113a.

[0192] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable electronic device, characterized by, The application relates to a foldable electronic device. The foldable electronic device comprises a first shell, a second shell, a bearing base, a first swing arm, a second swing arm and a first support plate. The bearing base is arranged between the first shell and the second shell, the opposite sides of the first swing arm are connected with the first shell and the bearing base respectively, the opposite sides of the second swing arm are connected with the second shell and the bearing base respectively, and the first support plate is slidingly and rotatably connected with the first shell and the first swing arm respectively. The first shell is provided with a first mounting groove, and a first limiting part is arranged in the first mounting groove; the first swing arm is provided with a second limiting part; and the first support plate is provided with a first abutting part and a second abutting part. When the foldable electronic device is in a folded state, the first abutting part is opposite to the first limiting part, and the second limiting part is opposite to the second abutting part. The first limiting part comprises the inner wall surface of the first mounting groove, and the first abutting part comprises the surface of the first support plate; when the first shell and the second shell are folded relative to each other and the bearing base is impacted by external force, the first shell, the first support plate, the first swing arm and the bearing base are sequentially arranged from top to bottom.

2. The foldable electronic device of claim 1, wherein, A first sliding groove is arranged in the first mounting groove, and the first swing arm is slidingly and rotatably connected with the first sliding groove; and the first limiting part is arranged in the first sliding groove. The first swing arm is located between the first support plate and the groove bottom surface of the first sliding groove; the first support plate is provided with a first protrusion, the first protrusion penetrates the first swing arm along the thickness direction of the first swing arm when the foldable electronic device is in the folded state, and the first protrusion extends into the first sliding groove; and the first protrusion is provided with the first abutting part.

3. The foldable electronic device of claim 2, wherein, The first sliding groove is provided with a first limiting groove, the first limiting part comprises the inner wall surface of the first limiting groove, and the first abutting part comprises the surface of the first protrusion.

4. The foldable electronic device of claim 3, wherein, The first shell comprises a first middle frame and a first mounting block, the first middle frame is provided with the first mounting groove, and the first mounting block is fixed in the first mounting groove; the first mounting block is provided with the first sliding groove, and the first limiting groove is arranged on the groove bottom surface of the first sliding groove.

5. The foldable electronic device according to any one of claims 1 to 4, wherein, The first swing arm is provided with a first abutting groove, the first abutting groove is provided with the second limiting part, the first support plate is provided with a second protrusion, at least part of the second protrusion extends into the first abutting groove when the foldable electronic device is in the folded state, and the second protrusion is provided with the second abutting part.

6. The foldable electronic device of claim 5, wherein, The second limiting part comprises the inner wall surface of the first abutting groove, and the second abutting part comprises the surface of the second protrusion.

7. The foldable electronic device of any of claims 1-4, wherein, The first limiting part and the first abutting part are parallel to each other.

8. The foldable electronic device of claim 7, wherein, The first limiting part is parallel to a reference surface; the reference surface is parallel to the plane where the thickness direction of the first shell and the length direction of the first shell are located.

9. The foldable electronic device of claim 7, wherein, When the foldable electronic device is in the folded state, the first limiting part is inclined relative to the reference surface, and the first limiting part faces the second shell; the reference surface is parallel to the plane where the thickness direction of the first shell and the length direction of the first shell are located.

10. The foldable electronic device of claim 9, wherein, An included angle b between the first limiting part and the reference surface satisfies the following condition: 0 degrees < b ≤ 45 degrees.

11. The foldable electronic device of claim 7, wherein, The first swing arm is provided with a first abutting groove, and the second limiting part is arranged in the first abutting groove; the first supporting plate is provided with a second protrusion, and at least part of the second protrusion is arranged in the first abutting groove when the foldable electronic device is in the folded state; and the second protrusion is provided with the second abutting part.

12. The foldable electronic device of claim 11, wherein, The second limiting part comprises an inner wall surface of the first abutting groove, and the second abutting part comprises a surface of the second protrusion.

13. The foldable electronic device of any of claims 1-4, wherein, The second limiting part and the second abutting part are parallel.

14. The foldable electronic device of claim 13, wherein, The second limiting part is parallel to a reference surface, and the reference surface is parallel to a plane in which a thickness direction of the first shell and a length direction of the first shell are located.

15. The foldable electronic device of claim 13, wherein, When the foldable electronic device is in the folded state, the second limiting part is inclined relative to the reference surface, and the second limiting part faces the second shell; and the reference surface is parallel to the plane in which the thickness direction of the first shell and the length direction of the first shell are located.

16. The foldable electronic device of claim 15, wherein, An included angle a between the second limiting part and the reference surface satisfies the following condition: 0 degrees < a ≤ 45 degrees.

17. The foldable electronic device of claim 13, wherein, The first swing arm is provided with a first abutting groove, and the second limiting part is arranged in the first abutting groove; the first supporting plate is provided with a second protrusion, and at least part of the second protrusion is arranged in the first abutting groove when the foldable electronic device is in the folded state; and the second protrusion is provided with the second abutting part.

18. The foldable electronic device of claim 17, wherein, The second limiting part comprises an inner wall surface of the first abutting groove, and the second abutting part comprises a surface of the second protrusion.

19. The foldable electronic device of claim 13, wherein, The first limiting part and the first abutting part are parallel.

20. The foldable electronic device of claim 19, wherein, The first limiting part is parallel to a reference surface, and the reference surface is parallel to a plane in which a thickness direction of the first shell and a length direction of the first shell are located.

21. The foldable electronic device of claim 19, wherein, When the foldable electronic device is in the folded state, the first limiting part is inclined relative to the reference surface, and the first limiting part faces the second shell; and the reference surface is parallel to the plane in which the thickness direction of the first shell and the length direction of the first shell are located.

22. The foldable electronic device of claim 21, wherein, An included angle b between the first limiting part and the reference surface satisfies the following condition: 0 degrees < b ≤ 45 degrees.

23. A rotating mechanism, characterized in that, The rotating mechanism comprises a bearing base, a first swing arm and a first supporting plate; one side of the first swing arm is connected with the bearing base, and the other side of the first swing arm is used for being connected with a first shell of a foldable electronic device; and the first supporting plate is slidingly and rotatably connected with the first shell and the first swing arm respectively. The first shell is provided with a first limiting part; the first swing arm is provided with a second limiting part; and the first supporting plate is provided with a first abutting part and a second abutting part. The first shell is provided with a first mounting groove, and the first limiting part is arranged in the first mounting groove. When the foldable electronic device is in the folded state, the first abutting part is opposite to the first limiting part, and the second limiting part is opposite to the second abutting part. The first limiting part includes the inner wall surface of the first mounting slot, and the first abutting part includes the surface of the first support plate; the first shell and the second shell of the foldable electronic device are relatively folded, and when the bearing base is subjected to an external impact force, the first shell, the first support plate, the first swing arm and the bearing base are sequentially arranged from top to bottom.

24. The swivel mechanism of claim 23, wherein, The first shell is provided with a first mounting slot, a first mounting block is fixed in the first mounting slot, the first mounting block is provided with a first sliding slot, and the bottom surface of the first sliding slot is provided with a first limiting slot; The first swing arm is slidingly and rotationally connected to the first sliding slot, and the first swing arm is located between the first support plate and the bottom surface of the first sliding slot; one side of the first support plate towards the first swing arm is provided with a first protrusion, and when the foldable electronic device is in a folded state, the first protrusion penetrates the first swing arm in the thickness direction of the first swing arm and extends into the first limiting slot through the first sliding slot; When the foldable electronic device is in a folded state, the surface of the first support plate and the inner wall surface of the first mounting slot are opposite, and the surface of the first protrusion and the inner wall surface of the first limiting slot are opposite; the first limiting part includes the inner wall surface of the first mounting slot and the inner wall surface of the first limiting slot, and the first abutting part includes the surface of the first support plate and the surface of the first protrusion.

25. A swivel mechanism according to claim 23 or 24, characterized in that The first swing arm is provided with a first abutting slot, and the first support plate is provided with a second protrusion; when the foldable electronic device is in a folded state, at least part of the second protrusion extends into the first abutting slot, and the surface of the second protrusion and the inner wall surface of the first abutting slot are opposite; the second limiting part includes the inner wall surface of the first abutting slot, and the second abutting part includes the surface of the second protrusion.

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