Rotating mechanism and foldable electronic device

Abstract

The application discloses a rotating mechanism and a foldable electronic device, which comprises a first sliding groove, a first stop part is arranged at the first end of the first sliding groove, and a second stop part is arranged at the second end of the first sliding groove; a main swing arm comprises a third end arranged in the first sliding groove; when the main swing arm rotates to a first target position along a first direction, the third end of the main swing arm abuts against the first stop part, so that the rotation of the main swing arm along the first direction is limited; when the main swing arm rotates to a second target position along a second direction, the third end of the main swing arm abuts against the second stop part, so that the rotation of the main swing arm along the second direction is limited. In this way, when the main swing arm rotates to a completely folded state, the third end of the main swing arm can be limited from being taken out of the first sliding groove through the stop action of the first stop part. When the main swing arm rotates to a completely unfolded state, the main swing arm can be limited from rotating to the unfolded state through the stop action of the second stop part, so that the flatness of the flexible screen is maintained, and the user experience is improved.

Description

Technical Field

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

[0002] Foldable electronic devices, such as foldable screen phones, can have flexible foldable displays that fold inwards or outwards attached to their bodies to provide a larger display area for users when the device is fully unfolded. The body mainly consists of two frames that can rotate around a rotating mechanism. The rotating mechanism includes a hinge cover, a base mounted on the hinge cover, and a main swing arm. One end of the main swing arm can slide back and forth within a groove formed by the base to open and close the device.

[0003] When a foldable electronic device is in a folded state, the overlap between the main swing arm and the slide is the smallest during the entire movement. The main swing arm is relatively free under constraint. Therefore, when a foldable electronic device is in a folded state, the relative position between the main swing arm and the slide is the most unstable. This can easily cause the main swing arm to jam, affecting the opening and closing feel. There is even a risk that the main swing arm may come out of the slide when subjected to external impacts (such as drops). Summary of the Invention

[0004] This application provides a rotating mechanism and a foldable electronic device that can solve the problem of the main swing arm falling off the slide.

[0005] In a first aspect, this application provides a rotating mechanism, comprising: a base, the base including a first sliding groove, the first sliding groove being an arc-shaped groove, the first sliding groove including a first end and a second end disposed opposite to each other, the first end being provided with a first stop portion, and the second end being provided with a second stop portion; a main swing arm, the main swing arm being partially disposed within the first sliding groove, and including a third end located within the first sliding groove; the main swing arm being configured to: be rotatable relative to the base, causing the third end of the main swing arm to slide between the first end and the second end of the first sliding groove; wherein, when the main swing arm rotates along a first direction to a first target position, the third end of the main swing arm abuts against the first stop portion to restrict the main swing arm from continuing to rotate along the first direction; when the main swing arm rotates along a second direction to a second target position, the third end of the main swing arm abuts against the second stop portion to restrict the main swing arm from continuing to rotate along the second direction, the first direction being opposite to the second direction.

[0006] In this way, when the main swing arm rotates to the fully folded state, the first stop can prevent the third end of the main swing arm from disengaging from the first slide groove. When the main swing arm rotates to the fully unfolded state, the second stop can prevent the main swing arm from rotating further towards the unfolded state, thereby maintaining the flatness of the flexible screen and improving the user experience.

[0007] In one possible implementation, the base includes an upper base and a lower base disposed opposite to each other, with a gap between the upper base and the lower base to form a first groove; the first stop portion includes a first abutment surface located on the upper base and facing the lower base; the third end of the main swing arm includes a first protrusion protruding in the direction of the upper base, the first protrusion including a second abutment surface facing the upper base; when the main swing arm rotates in the first direction to a first target position, the first abutment surface abuts against the second abutment surface to limit the main swing arm from continuing to rotate in the first direction.

[0008] In this way, when the main swing arm rotates to the fully folded state, it can be stopped by the first abutment surface located on the upper base and the first protrusion located on the main swing arm, so as to limit the main swing arm from continuing to rotate in the first direction.

[0009] In one possible implementation, the lower base includes a first groove and a slide rail that are recessed in the direction of sliding along the first slide rail and away from the upper base. The slide rail protrudes in the direction of the upper base relative to the first groove. The first stop portion also includes a second protrusion located in the first groove. The second protrusion includes a third abutment surface facing the second end of the first slide rail. The surface of the main swing arm away from the upper base includes a clearance groove for avoiding the second protrusion and a second slide rail corresponding to the slide rail. The clearance groove extends in the sliding direction of the main swing arm and includes a third protrusion protruding in the direction of the lower base. The third protrusion is located at the third end of the main swing arm and includes a fourth abutment surface. When the main swing arm rotates in the first direction to the first target position, the third abutment surface abuts against the fourth abutment surface to limit the main swing arm from continuing to rotate in the first direction.

[0010] In this way, when the main swing arm rotates to the fully folded state, it can be stopped by the first abutment surface located on the upper base engaging with the first protrusion located on the main swing arm, and by the second protrusion located on the lower base engaging with the third protrusion located on the main swing arm, thereby restricting the main swing arm from continuing to rotate in the first direction.

[0011] In one possible implementation, the lower base includes a first groove disposed along the sliding direction of the first groove and recessed in a direction away from the upper base; the first stop portion further includes a fourth protrusion located within the first groove, the fourth protrusion including a fifth abutment surface facing the second end of the first groove; the surface of the main swing arm away from the upper base includes a second groove, the second groove being recessed in the direction of the upper base, the second groove including a fifth protrusion protruding in the direction of the lower base, the fifth protrusion being located at the third end of the main swing arm and including a sixth abutment surface; when the main swing arm rotates in the first direction to the first target position, the fifth abutment surface abuts against the sixth abutment surface to limit the main swing arm from continuing to rotate in the first direction.

[0012] In this way, when the main swing arm rotates to the fully folded state, it can be stopped by the first abutment surface located on the upper base engaging with the first protrusion located on the main swing arm, and by the fourth protrusion located on the lower base engaging with the fifth protrusion located on the main swing arm, thereby restricting the main swing arm from continuing to rotate in the first direction.

[0013] In one possible implementation, the rotating mechanism further includes: a shaft cover located on the side of the main swing arm away from the base, the shaft cover including a rib protruding downwards from the base; the lower base including a first groove disposed along the sliding direction of the first slide and recessed away from the upper base, the first groove including a first clearance hole; the rib passing through the first clearance hole and exposing the seventh abutment surface of the rib at the opening of the first clearance hole, the seventh abutment surface facing the second end; the surface of the main swing arm away from the upper base including a fifth protrusion protruding downwards from the base, the fifth protrusion including a sixth abutment surface; when the main swing arm rotates along the first direction to the first target position, the sixth abutment surface abuts against the seventh abutment surface to limit the main swing arm from continuing to rotate along the first direction.

[0014] In this way, when the main swing arm rotates to the fully folded state, the first abutment surface located on the upper base can be stopped by the first protrusion located on the main swing arm, and the rib located on the shaft cover can be stopped by the fifth protrusion located on the main swing arm, thereby restricting the main swing arm from continuing to rotate in the first direction.

[0015] In one possible implementation, the base includes an upper base and a lower base disposed opposite to each other, with a gap between the upper base and the lower base to form a first groove; a second stop portion is located on the upper base, the second stop portion including an eighth abutment surface facing the lower base; the third end of the main swing arm includes a ninth abutment surface; when the main swing arm rotates in a second direction to a second target position, the eighth abutment surface abuts against the ninth abutment surface to limit the main swing arm from continuing to rotate in the second direction.

[0016] Thus, when the main swing arm rotates to its fully extended state in the second direction, the stopping action of the eighth and ninth contact surfaces can restrict the main swing arm from continuing to rotate in the second direction.

[0017] In one possible implementation, the end face of the third end of the main swing arm is provided with an opening, and a ninth abutment surface is located at the bottom of the opening, which divides the third end of the main swing arm into a first branch and a second branch; the upper base includes a second clearance hole and a third clearance hole for avoiding the first branch and the second branch; an eighth abutment surface is located between the second clearance hole and the third clearance hole; when the main swing arm rotates in a second direction to a second target position, the first branch is located in the second clearance hole, and the second branch is located in the third clearance hole.

[0018] In one possible implementation, the rotating mechanism further includes: a shaft cover located on the side of the main swing arm away from the base; the main swing arm further includes a fourth end located outside the first slide groove; a tenth abutment surface is included between the third end and the fourth end of the main swing arm, the tenth abutment surface facing the shaft cover; when the main swing arm rotates in the second direction to the second target position, the tenth abutment surface abuts against the outer edge of the shaft cover.

[0019] In this way, the eighth and ninth contact surfaces can play a primary stop role, while the tenth contact surface and the edge of the bushing (or base) play a secondary stop role, so that there will not be excessive force between the main swing arm and the bushing, which would cause the bushing to be bumped and the paint to be chipped off and exposed.

[0020] In one possible implementation, the main swing arm further includes a fourth end located outside the first slide groove; the rotating mechanism further includes a wedge-shaped mounting block, including a fifth end and a sixth end disposed opposite to each other, the fifth end of the wedge-shaped mounting block being rotatably connected to the fourth end of the main swing arm; the fifth end of the wedge-shaped mounting block is provided with a third stop portion; when the main swing arm rotates in a second direction, the wedge-shaped mounting block rotates relative to the main swing arm in a first direction; when the main swing arm rotates in the second direction to a second target position, the main swing arm abuts against the third stop portion to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm in the first direction.

[0021] In one possible implementation, the fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing; the first bushing and the second bushing are connected by a pin; the third stop is a first crossbeam arranged radially parallel to the first bushing in the direction of the pin, the first crossbeam axially spans the first bushing in the direction of the pin and is spaced from the first bushing in the direction of the pin; the sixth end of the first crossbeam and the wedge-shaped mounting block are located on the same side of the main swing arm; a sixth protruding protrusion is provided on the outer side of the second bushing; when the main swing arm rotates in the second direction, the first crossbeam rotates toward the sixth protrusion; when the main swing arm rotates in the second direction to the second target position, the sixth protrusion abuts against the first crossbeam to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm in the first direction.

[0022] In one possible implementation, the fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing. The first bushing and the second bushing are connected by a pin. The first bushing includes a first end face, and a third stop portion is located on the first end face. The third stop portion is a second groove formed by a partial recess of the first end face along the axial direction of the pin. The second bushing includes a second end face opposite to the first end face. The second end face includes a seventh protrusion that protrudes towards the first end face along the axial direction of the pin. When the main swing arm rotates in a second direction, the second groove rotates around the seventh protrusion in a first direction. When the main swing arm rotates in the second direction to a second target position, the seventh protrusion abuts against the inner wall of the second groove to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm in the first direction.

[0023] In one possible implementation, the fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing; the first bushing and the second bushing are connected by a pin; the first bushing includes a first end face, and the second bushing includes a second end face opposite to the first end face; a third stop portion is located on the first end face, and the third stop portion is an eighth protrusion extending axially toward the second end face along the pin; the second end face includes a third groove, which is formed by a portion of the second end face being recessed axially along the pin; when the main swing arm rotates in a second direction, the eighth protrusion rotates in the third groove in a first direction; when the main swing arm rotates in the second direction to a second target position, the eighth protrusion abuts against the inner wall of the third groove to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm in the first direction.

[0024] In one possible implementation, the fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing, the first bushing and the second bushing being connected by a pin; the third stop portion is a second crossbeam arranged radially parallel to the first bushing in the direction of the pin, the second crossbeam axially spanning the first bushing in the direction of the pin and having a distance between it and the first bushing in the direction of the pin; the sixth end of the second crossbeam and the wedge-shaped mounting block are respectively located on both sides of the main swing arm; when the main swing arm rotates in the second direction, the second crossbeam rotates about the pin toward the first surface of the main swing arm; when the main swing arm rotates in the second direction to the second target position, the second crossbeam abuts against the first surface of the main swing arm to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm in the first direction.

[0025] In a second aspect, this application provides a foldable electronic device, comprising: a first body, a second body, a flexible screen, and a rotation mechanism as described in any of the first aspects; the first body and the second body are connected by the rotation mechanism, and the first body and the second body are rotatable around the rotation mechanism; the flexible screen covers the first body and the second body, and is connected to the first body and the second body. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of a foldable electronic device provided in an embodiment of this application;

[0027] Figure 2A A simplified structural diagram of a rotating mechanism in a folded state, as provided in an embodiment of this application;

[0028] Figure 2B A simplified structural diagram of a rotating mechanism in its deployed state, provided in an embodiment of this application;

[0029] Figure 3A A three-dimensional structural schematic diagram of a rotating mechanism provided in an embodiment of this application;

[0030] Figure 3BAn exploded view of a rotating mechanism provided in an embodiment of this application;

[0031] Figure 3C A cross-sectional view along line A1-A1 is provided for an embodiment of this application;

[0032] Figure 3D for Figure 3B A partial structural diagram along direction A at the upper middle base M;

[0033] Figure 3E This is a schematic diagram of the structure of a main swing arm provided in an embodiment of this application;

[0034] Figure 4A This application provides a schematic diagram of the structure of a lower base;

[0035] Figure 4B This is a schematic diagram of another main swing arm provided in the embodiments of this application;

[0036] Figure 4C An assembly drawing of a main swing arm and a lower base provided for an embodiment of this application;

[0037] Figure 4D Another cross-sectional view along the A1-A1 direction provided in the embodiments of this application;

[0038] Figure 5A This application provides a schematic diagram of another type of lower base structure;

[0039] Figure 5B This is a schematic diagram of another main swing arm provided in the embodiments of this application;

[0040] Figure 5C Another cross-sectional view along the A1-A1 direction provided in the embodiments of this application;

[0041] Figure 6A An exploded view of a shaft cover and a lower base provided in an embodiment of this application;

[0042] Figure 6B for Figure 6A Assembly drawing of the central shaft cover and lower base;

[0043] Figure 6C Another cross-sectional view along the A1-A1 direction provided in the embodiments of this application;

[0044] Figure 7A This is a schematic diagram of a rotating mechanism in an unfolded state, provided in an embodiment of this application.

[0045] Figure 7B A cross-sectional view along the A2-A2 direction provided in an embodiment of this application;

[0046] Figure 8A A schematic diagram of another rotating mechanism in an unfolded state, provided in an embodiment of this application;

[0047] Figure 8B for Figure 8A Exploded view;

[0048] Figure 8C for Figure 8A A simplified structural diagram;

[0049] Figure 9A This is a schematic diagram of the structure of a third stop portion provided in an embodiment of this application;

[0050] Figure 9B Another cross-sectional view along the A2-A2 direction provided in the embodiments of this application;

[0051] Figure 10A A schematic diagram of another third stop portion provided in an embodiment of this application;

[0052] Figure 10B Another cross-sectional view along the A2-A2 direction provided in the embodiments of this application;

[0053] Figure 11A A schematic diagram of another third stop portion provided in an embodiment of this application;

[0054] Figure 11B Another cross-sectional view along the A2-A2 direction provided in the embodiments of this application;

[0055] Figure 12A A schematic diagram of another third stop portion provided in an embodiment of this application;

[0056] Figure 12B for Figure 12A Assembly drawing of the main swing arm and wedge mounting block.

[0057] Explanation of reference numerals in the attached figures

[0058] 100 - Foldable electronic device; 10 - Rotation mechanism; 20 - First frame; 30 - Second frame; 40 - Flexible screen;

[0059] 11-Base, 111-First slide groove, 112-First end, 113-Second end;

[0060] 114-Upper base, 1141a-First arc-shaped protrusion, 1141b-Second arc-shaped protrusion, 1142-First abutting surface, 1143-Eighth abutting surface, 1144-Second clearance hole, 1145-Third clearance hole;

[0061] 115-Lower base, 1151-First groove, 1152-Slide rail, 1153-Second protrusion, 11531-Third abutment surface, 1154-Fourth protrusion, 11541-Fifth abutment surface, 11542-Arc-shaped surface, 1155-First clearance hole;

[0062] 12-Main swing arm, 12a-Third end, 12b-Fourth end, 12c-First surface, 12d-Second surface, 121-First protrusion, 1211-Second abutment surface, 122-Second sliding groove, 123-Allowing groove, 124-Third protrusion, 1241-Fourth abutment surface, 125-Fifth protrusion, 1251-Sixth abutment surface, 126-Opening, 1261-Ninth abutment surface, 1262-First support, 1263-Second support, 127-Bent portion, 1271-Tenth abutment surface; 128-Second bushing, 1281-Sixth protrusion, 128a-Second end face, 1282-Seventh protrusion, 1283-Third recess;

[0063] 13-Shaft cover, 131-Rib, 1311-Seventh mating surface;

[0064] 14-Wedge-shaped mounting block, 14a-Fifth end, 14b-Sixth end, 141-Shaft pin, 142-First bushing, 142a-First end face, 143-Third slide groove, 144-First crossbeam, 145-Second groove, 146-Eighth protrusion, 147-Second crossbeam;

[0065] 15-Secondary swing arm, 16-Door panel, 17-Elastic component. Detailed Implementation

[0066] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0067] This application provides a foldable electronic device, which may include, but is not limited to, mobile phones, tablets, laptops, ultra-mobile personal computers (UMPCs), handheld computers, touch TVs, walkie-talkies, netbooks, POS machines, personal digital assistants (PDAs), wearable devices such as headphones, Bluetooth glasses, virtual reality devices, and other mobile or fixed terminals with foldable functions, and is not limited herein.

[0068] Figure 1This is a schematic diagram of a foldable electronic device provided in an embodiment of this application. For ease of description in the following embodiments, an XYZ coordinate system is established for the foldable electronic device 100, defining the width direction of the foldable electronic device 100 as the X-axis, the height direction as the Y-axis, and the thickness direction as the Z-axis. It is understood that the coordinate system setting of the foldable electronic device 100 can be flexibly set according to actual needs, and is not specifically limited here.

[0069] like Figure 1 As shown, the foldable electronic device 100 includes a rotating mechanism 10, a first frame 20, a second frame 30, and a flexible screen 40. The first frame 20 and the second frame 30 are respectively disposed on both sides of the rotating mechanism 10, and the flexible screen 40 covers the rotating mechanism 10, the first frame 20, and the second frame 30. When a user applies a certain force to the foldable electronic device 100 to rotate the first frame 20 and the second frame 30, the first frame 20 and the second frame 30 can rotate around the rotating mechanism 10, realizing the unfolding and folding of the foldable electronic device 100.

[0070] Figure 2A This is a simplified structural diagram of a rotating mechanism 10 in a folded state, as provided in an embodiment of this application. Figure 2B This is a simplified structural diagram of a rotating mechanism 10 in an unfolded state, as provided in an embodiment of this application.

[0071] like Figure 2A and Figure 2B As shown, the rotating mechanism 10 may include a base 11 and a main swing arm 12. The base 11 includes a first groove 111, which is an arc-shaped groove. The first groove 111 includes a first end 112 and a second end 113 disposed opposite to each other. The main swing arm 12 is partially disposed within the first groove 111 and includes a third end 12a located within the first groove 111. The main swing arm 12 is configured to rotate relative to the base 11, causing the third end 12a of the main swing arm 12 to slide between the first end 112 and the second end 113 of the first groove 111.

[0072] Thus, as Figure 2A As shown, when the main swing arm 12 rotates along the first direction, causing the foldable electronic device 100 to be in a fully folded state, there is a possibility that the third end 12a of the main swing arm 12 may easily detach from the first end 112 of the first slide groove 111. Figure 2B As shown, when the main swing arm 12 rotates along the second direction, causing the foldable electronic device 100 to be in a fully unfolded state, there is a problem that the main swing arm 12 is over-extended, resulting in an uneven flexible screen and affecting the user experience.

[0073] The first direction is opposite to the second direction. The first direction is the direction that causes the foldable electronic device 100 to tend towards a fully folded state, and the second direction is the direction that causes the foldable electronic device 100 to tend towards a fully unfolded state. When the foldable electronic device 100 is in a fully folded state, the flexible screen 40 is concealed within the foldable electronic device 100. When the foldable electronic device 100 is in a fully unfolded state, the flexible screen 40 is exposed on the outside of the foldable electronic device 100 and is available for user use.

[0074] To address the aforementioned problems, this application provides a rotating mechanism 10. This rotating mechanism has a first stop portion at the first end 112 of the first slide groove 111 and a second stop portion at the second end 113. When the main swing arm 12 rotates along a first direction to a first target position, the third end 12a of the main swing arm 12 abuts against the first stop portion to restrict further rotation of the main swing arm 12 along the first direction, thereby preventing the third end 12a of the main swing arm 12 from disengaging from the first end 112 of the first slide groove 111. When the main swing arm 12 rotates along a second direction to a second target position, the third end 12a of the main swing arm 12 abuts against the second stop portion to restrict further rotation of the main swing arm 12 along the second direction, thereby preventing overextension of the main swing arm 12 and ensuring the flatness of the flexible screen.

[0075] The first target position can be the position of the foldable electronic device 100 when it is in a fully folded state, and the second target position can be the position of the foldable electronic device 100 when it is in a fully unfolded state.

[0076] The first stop portion provided in the embodiments of this application will be described below.

[0077] In this embodiment, the function of the first stop portion is to prevent the third end 12a of the main swing arm 12 from disengaging from the first end 112 of the first slide groove 111. This embodiment does not limit the specific implementation of the first stop portion.

[0078] In one possible implementation, the first stop portion can be adopted. Figures 3A to 3E The arrangement shown is configured on the upper base 114.

[0079] Figure 3A This is a three-dimensional structural diagram of the first type of rotating mechanism provided in the embodiments of this application. Figure 3B An exploded view of the first rotating mechanism provided in the embodiments of this application. Figure 3C for Figure 3A Cross-sectional view along line A1-A1.

[0080] like Figure 3A , Figure 3B and Figure 3CAs shown, the rotating mechanism 10 may include an upper base 114, a lower base 115, a main swing arm 12, and a shaft cover 13. The upper base 114 and the lower base 115 are disposed opposite each other, and the lower base 115 is located between the upper base 114 and the shaft cover 13. One or more lower bases 115 may be arranged at intervals along the Y-axis direction in the rotating mechanism 10, for example... Figure 3A The device shown includes two lower bases 115. Each lower base 115, when engaged with the upper base 114, forms two first sliding grooves 111. Each of the two first sliding grooves 111 engages with a pair of mirror-symmetrical main swing arms 12. Specifically, the third ends 12a of the pair of mirror-symmetrical main swing arms 12 are located within the two first sliding grooves 111. Thus, the third ends 12a of the two main swing arms 12 can slide within their respective first sliding grooves 111, enabling the folding and unfolding of the foldable electronic device.

[0081] It should be understood that the structure of each main swing arm 12 in the foldable electronic device, and the cooperation relationship between each main swing arm 12 and other structures (such as upper base 114, lower base 115, and shaft cover 13) are the same. This application embodiment only takes the structure of one main swing arm 12 and the cooperation relationship between this one main swing arm 12 and other structures as an example to illustrate the rotation mechanism provided in this application embodiment.

[0082] like Figure 3B As shown, the lower base 115 includes a first groove 1151 and a slide 1152 formed by recessing in a direction away from the upper base 114. The depth of the recess in the first groove 1151 in the direction away from the upper base 114 is greater than the depth of the recess in the slide 1152 in the direction away from the upper base 114, causing the slide 1152 to protrude from the first groove 1151. Both the first groove 1151 and the slide 1152 are arc-shaped.

[0083] The position of the sliding element 1152 is not limited in this embodiment. For example, the sliding element 1152 can be disposed at both ends of the first groove 1151 along the Y-axis direction.

[0084] Figure 3D for Figure 3B A partial structural diagram along direction A at the upper middle base M. (See diagram below.) Figure 3B and Figure 3DAs shown, the upper base 114 may include a first arcuate protrusion 1141a that mates with the first groove 1151 and a second arcuate protrusion 1141b that mates with the slide rail 1152. Both the first arcuate protrusion 1141a and the second arcuate protrusion 1141b protrude towards the lower base 115. After the upper base 114 and the lower base 115 are engaged, the first groove 1151 and the first arcuate protrusion 1141a correspond to each other and have a gap between them, and the slide rail 1152 and the second arcuate protrusion 1141b correspond to each other and have a gap between them. In this way, a first groove 111 can be formed between the upper base 114 and the lower base 115.

[0085] The first stop portion may include a first abutting surface 1142 disposed on the upper base 114 and facing the lower base 115. For example, the first abutting surface 1142 may be formed by partially flattening the second arcuate protrusion 1141b.

[0086] Figure 3E for Figure 3A A schematic diagram of the main swing arm. Figure 3E As shown, the main swing arm 12 includes a third end 12a and a fourth end 12b disposed opposite to each other, and a first surface 12c and a second surface 12d disposed opposite to each other. The third end 12a of the main swing arm 12 is an arc-shaped arm adapted to the first sliding groove 111, the first surface 12c of the main swing arm 12 faces the upper base 114, and the second surface 12d of the main swing arm 12 faces the lower base 115.

[0087] like Figure 3E As shown in (a), a first protrusion 121 is provided on the first surface 12c. The first protrusion 121 is located at the third end 12a of the main swing arm 12 and protrudes towards the upper base 114. The first protrusion 121 includes a second abutment surface 1211 facing the upper base 114.

[0088] like Figure 3E (b) and Figure 3B As shown, the second surface 12 may be provided with a second groove 122 that mates with the slide rail 1152, and the slide rail 1152 of the lower base 115 may be embedded in the second groove 122 of the main swing arm 12. In this way, the portion of the second surface 12 that protrudes from the second groove 122 can slide within the gap formed by the first groove 1151 and the first arc-shaped protrusion 1141a, and the second groove 122 can slide within the gap formed by the slide rail 1152 and the second arc-shaped protrusion 1141b, thereby ensuring that the main swing arm 12 does not wobble when it rotates.

[0089] like Figure 3CAs shown, the upper base 114 includes a first abutment surface 1142 facing the lower base 115, and the first protrusion 121 of the main swing arm 12 includes a second abutment surface 1211 facing the upper base 114. When the main swing arm 12 rotates in the first direction (i.e., rotates inward) to a fully folded state, the first abutment surface 1142 abuts against the second abutment surface 1211 to limit the main swing arm 12 from continuing to rotate in the first direction. Thus, when the main swing arm 12 rotates in the first direction to a fully folded state, the third end 12a of the main swing arm 12 will not disengage from the first groove 111 due to the stopping action of the first abutment surface 1142 and the second abutment surface 1211.

[0090] In one possible implementation, the first stop portion can also be adopted. Figures 4A to 4D The configuration shown is provided on the upper base 114 and the lower base 115 respectively. The structure of the first stop portion located on the upper base 114 (i.e., the first abutment surface 1142) can be found in [reference needed]. Figures 3A to 3E The description will not be repeated here.

[0091] Figure 4A This is a schematic diagram of another type of lower base provided in an embodiment of this application. (See attached diagram.) Figure 4A As shown, the first stop portion may further include a second protrusion 1153 disposed on the first groove 1151 of the lower base 115. The second protrusion 1153 protrudes towards the upper base 114, and the second protrusion 1153 includes a third abutting surface 11531 facing the second end 113.

[0092] Figure 4B This is a schematic diagram of another main swing arm provided in an embodiment of this application. (See attached diagram.) Figure 4B As shown in (a), a first protrusion 121 is provided on the first surface 12c of the main swing arm 12. The first protrusion 121 is located at the third end 12a of the main swing arm 12 and protrudes towards the upper base 114. The first protrusion 121 includes a second abutment surface 1211 facing the upper base 114.

[0093] like Figure 4B As shown in (b), the second surface 12d of the main swing arm 12 is provided with a clearance groove 123 for avoiding the second protrusion 1153. The clearance groove 123 extends along the sliding direction of the main swing arm 12 and stops extending at a preset position at a distance from the third end 12a, forming a third protrusion 124 protruding in the direction of the downward base 115. The third protrusion 124 includes a fourth abutment surface 1241.

[0094] Figure 4C An assembly drawing of a main swing arm and a lower base is provided for the implementation of this application. (See attached image.) Figure 4CAs shown, when the main swing arm 12 slides in conjunction with the lower base 115, the edge of the main swing arm 12 slides along the slide rail 1152 of the lower base 115, and the clearance groove 123 slides along the second protrusion 1153 of the lower base 115. The clearance groove 123 can avoid the second protrusion 1153 on the lower base 115, ensuring that the second surface 12d of the main swing arm 12 will not conflict with the second protrusion 1153.

[0095] Figure 4D This is yet another cross-sectional view along the A1-A1 direction provided in an embodiment of this application. (In conjunction with...) Figure 4A , Figure 4B and 4D As shown, the upper base 114 is provided with a first abutment surface 1142, the lower base 115 includes a second protrusion 1153, the first surface 12c of the main swing arm 12 is provided with a first protrusion 121, and the second surface 12d of the main swing arm 12 is provided with a third protrusion 124. When the main swing arm 12 rotates along the first direction to a fully folded state, the first abutment surface 1142 abuts against the second abutment surface 1211 on the first protrusion 121, and the third abutment surface 11531 on the second protrusion 1153 abuts against the fourth abutment surface 1241 on the third protrusion 124. In this way, when the main swing arm 12 rotates along the first direction to a fully folded state, the first surface 12c and the second surface 12d of the main swing arm 12 are subjected to different stopping effects, thereby better ensuring that the third end 12a of the main swing arm 12 will not come out of the first slide groove 11.

[0096] In one possible implementation, the first stop portion can also be adopted. Figures 5A to 5C The configuration shown is provided on the upper base 114 and the lower base 115 respectively. The structure of the first stop portion located on the upper base 114 (i.e., the first abutment surface 1142) can be found in [reference needed]. Figures 3A to 3E The description will not be repeated here.

[0097] Figure 5A This is a schematic diagram of another type of lower base provided in an embodiment of this application. (See attached diagram.) Figure 5A As shown, the lower base 115 includes a first groove 1151, but does not include, as shown in the figure ... Figure 4A The slide 1152 is shown, and a fourth protrusion 1154 is provided at the first end 112 where the original slide 1152 is located. The fourth protrusion 1154 protrudes towards the upward base 114, and the fourth protrusion 1154 includes a fifth abutment surface 11541 facing the second end 113, and an arcuate surface 11542 facing the main swing arm 12.

[0098] Figure 5B This is a schematic diagram of another main swing arm provided in an embodiment of this application. (See attached diagram.) Figure 5B As shown in (a), the first surface 12c of the main swing arm 12 and Figure 4BThe first surface 12c of the main swing arm 12 is the same; for details, please refer to the comparison. Figure 4B The description in (a) will not be repeated here.

[0099] like Figure 5B As shown in (b), a fifth protrusion 125 is provided on the second surface 12d of the main swing arm 12. The fifth protrusion 125 is located at the third end 12a of the main swing arm 12. The fifth protrusion 125 protrudes downward towards the base and includes a sixth abutment surface 1251.

[0100] The fifth protrusion 125 is positioned corresponding to the fourth protrusion 1154. For example, if the fourth protrusion 1154 is located at the edge of the first groove 1151, then the fifth protrusion 125 can be correspondingly located within the second slide groove 122. The second slide groove 122 of the main swing arm 12 can slide along the arc surface 11542, and when fully folded, the fifth protrusion 125 within the second slide groove 122 contacts the fourth protrusion 1154 within the first groove 1151.

[0101] Figure 5C This is yet another cross-sectional view along the A1-A1 direction provided in an embodiment of this application. For example... Figure 5C As shown, the upper base 114 may be provided with a first abutment surface 1142, the lower base 115 may include a fourth protrusion 1154, the first surface 12c of the main swing arm 12 is provided with a first protrusion 121, and the second surface 12d of the main swing arm 12 is provided with a fifth protrusion 125. When the main swing arm 12 rotates along the first direction to a fully folded state, the first abutment surface 1142 abuts against the second abutment surface 1211 on the first protrusion 121, and the fifth abutment surface 11541 on the fourth protrusion 1154 abuts against the sixth abutment surface 1251 on the fifth protrusion 125. In this way, when the main swing arm 12 rotates along the first direction to a fully folded state, the first surface 12c and the second surface 12d of the main swing arm 12 are subjected to different stopping effects, thereby better ensuring that the third end 12a of the main swing arm 12 will not come out of the first slide groove 11.

[0102] It should be noted that the above embodiments are only exemplified by setting a first stop part on the base to prevent the third end 12a of the main swing arm 12 from dislodging from the first slide groove 111, and do not represent a limitation on the solution for preventing the third end 12a of the main swing arm 12 from dislodging from the first slide groove 11.

[0103] For example, in some embodiments, the following methods may also be employed: Figures 6A to 6C The method shown prevents the third end 12a of the main swing arm 12 from dislodging from the first slide groove 11.

[0104] Figure 6A This is an exploded view of a shaft cover and a lower base provided in an embodiment of this application. Figure 6AAs shown, the lower base 115 includes a first groove 1151, but does not include, as shown in the figure ... Figure 4A The slide 1152 shown does not include, for example, slide 1152. Figure 5A The fourth protrusion 1154 is shown, and a first clearance hole 1155 is provided at the original location of the fourth protrusion 1154. The inner sidewall of the shaft cover 13 includes a rib 131 that mates with the first clearance hole 1155, and the rib 131 protrudes downward toward the base 115.

[0105] Figure 6B This is an assembly drawing of a shaft cover and a lower base provided for an embodiment of this application. Figure 6B As shown, the four first clearance holes 1155 of the lower base 115 pass through the four protruding ribs 131 of the shaft cover 13 and are fixed to the shaft cover 13. Among them, after the protruding ribs 131 pass through the first clearance holes 1155, the seventh abutment surface 1311 of the protruding ribs 131 is exposed on the inner surface of the lower base 155 and is located at the opening of the first clearance holes 1155, with the seventh abutment surface 1311 facing the second end 113.

[0106] Figure 6C This is yet another cross-sectional view along the A1-A1 direction provided in an embodiment of this application. For example... Figure 6C As shown, the upper base 114 may be provided with a first abutment surface 1142, the shaft cover 13 may include a protruding rib 131, the first surface 12c of the main swing arm 12 is provided with a first protrusion 121, and the second surface 12d of the main swing arm 12 is provided with a fifth protrusion 125 (the main swing arm 12 can be seen in...). Figure 5B When the main swing arm 12 rotates along the first direction to a fully folded state, the first abutment surface 1142 abuts against the second abutment surface 1211 on the first protrusion 121, and the exposed seventh abutment surface 1311 of the protrusion 131 abuts against the sixth abutment surface 1251 on the fifth protrusion 125. Thus, when the main swing arm 12 rotates along the first direction to a fully folded state, the first surface 12c and the second surface 12d of the main swing arm 12 are subjected to different stopping effects, thereby better ensuring that the third end 12a of the main swing arm 12 does not dislodge from the first slide groove 11.

[0107] It should be noted that the above embodiments are only Figure 3C , Figure 4D , Figure 5C and Figure 6C The illustrated scheme for preventing the third end 12a of the main swing arm 12 from detaching from the first slide groove 111 (hereinafter referred to as the anti-detachment scheme) is provided as an example and is not intended to limit the anti-detachment scheme. For example, the anti-detachment scheme can also be used alone. Figure 4D The third abutment surface 11531 and the fourth abutment surface 1241 are engaged to stop the movement. For example, the anti-loosening solution can also be used independently. Figure 5CThe fifth abutment surface 11541 and the sixth abutment surface 1251 are engaged to stop the movement. Alternatively, the anti-loosening solution can also be used independently. Figure 6C The seventh abutment surface 1311 and the sixth abutment surface 1251 are engaged to stop the stop.

[0108] The following is based on Figure 3C The second stop portion provided in this application embodiment will be described using the rotating mechanism shown as an example.

[0109] Please refer to Figure 3D The upper base 114 includes an eighth abutment surface 1143 between the two first arcuate protrusions 1141a, which can serve as a second stop portion. The other two sides of the eighth abutment surface 1143 may also include a second clearance hole 1144 and a third clearance hole 1145.

[0110] Please refer to Figure 3E An opening 126 may be provided on the end face of the third end 12a of the main swing arm 12. The bottom of the opening 126 is the ninth abutment surface 1261. The opening 126 divides the third end 12a of the main swing arm 12 into a first branch 1262 and a second branch 1263.

[0111] Figure 7A This is a schematic diagram of a rotating mechanism in its deployed state, provided in an embodiment of this application. Figure 7B For along Figure 7A A cross-sectional view along the A2-A2 direction. (See attached image.) Figure 7A and Figure 7B As shown, when the main swing arm 12 rotates to the fully extended state in the second direction, the first branch 1262 is located in the second clearance hole 1144, the second branch 1263 is located in the third clearance hole 1145, and the eighth abutment surface 1143 abuts against the ninth abutment surface 1261, thereby restricting the main swing arm 12 from continuing to rotate in the second direction.

[0112] In some embodiments, in order to better ensure the flatness of the flexible screen when the foldable electronic device 100 is in the fully unfolded state, the position where the main swing arm 12 overlaps with the edge of the base 11 or the shaft cover 13 can be improved to further limit the main swing arm 12 from continuing to rotate in the second direction.

[0113] For example, please refer to Figure 3E and Figure 7BA bending portion 127 can be provided between the third end 12a and the fourth end 12b of the main swing arm 12. The bending direction of the bending portion 127 is opposite to the bending direction of the arc-shaped arm. The bending portion 127 includes a tenth abutment surface 1271, which faces the edge of the shaft cover 13. When the main swing arm 12 rotates in the second direction to the fully extended state, the tenth abutment surface 1271 abuts against the outer edge of the shaft cover 13, and the eighth abutment surface 1143 abuts against the ninth abutment surface 1261, thereby better restricting the main swing arm 12 from continuing to rotate in the second direction.

[0114] In some embodiments, the interference between the eighth abutment surface 1143 and the ninth abutment surface 1261 can be 3mm, serving as a primary stop, while the interference between the tenth abutment surface 1271 and the edge of the shaft cover 13 (or base 11) can be 0-2mm, serving as a secondary stop. Furthermore, the combined stop function of the eighth abutment surface 1143 and the ninth abutment surface 1261, and the tenth abutment surface 1271 and the shaft cover 13 (or base 11) prevents excessive force between the main swing arm 12 and the shaft cover 13, thus preventing the shaft cover 13 from chipping and exposing its white surface.

[0115] In some embodiments, such as Figure 8A and Figure 8B As shown, the rotating mechanism 10 also includes a wedge-shaped mounting block 14, a secondary swing arm 15, and a door panel 16.

[0116] The wedge-shaped mounting block 14 can be used to connect the first frame 20 or the second frame 30. The wedge-shaped mounting block 14 includes a fifth end 14a and a sixth end 14b that are disposed opposite to each other. The fifth end 14a of the wedge-shaped mounting block 14 is rotatably connected to the fourth end 12b of the main swing arm 12, and the fifth end 14a of the wedge-shaped mounting block 14 can rotate relative to the main swing arm 12.

[0117] In one possible implementation, the fifth end 14a of the wedge-shaped mounting block 14 and the fourth end 12b of the main swing arm 12 can be rotatably connected by a pin 141. For example, the fifth end 14a of the wedge-shaped mounting block 14 can be provided with a first bushing 142, and the fourth end 12b of the main swing arm 12 can be provided with a second bushing 128, with the first bushing 142 and the second bushing 128 connected by a pin 141. The wedge-shaped mounting block 14 is also provided with a third groove 143 along the Y-axis. One end of the auxiliary swing arm 15 can be connected to the elastic member 17 located on the lower base, and the other end can extend into the third groove 143 and slide along the third groove 143. The door panel 16 can be used to support the flexible screen, and one end of the door panel 16 can be connected to the wedge-shaped mounting block 14 and can rotate relative to the wedge-shaped mounting block 14.

[0118] Figure 8C This is a simplified structural diagram of a rotating mechanism provided in an embodiment of this application. (In conjunction with...) Figure 8A , Figure 8B and Figure 8C As shown, when the main swing arm 12 rotates in the second direction, the wedge-shaped mounting block 14 rotates about the pivot pin 141 relative to the main swing arm 12 in the first direction. When the main swing arm 12 rotates in the second direction to the fully unfolded state, in order to keep the foldable electronic device in the fully unfolded state, the elastic member 17 applies a torque to the secondary swing arm 15 in the second direction. Thus, due to the torque, after the foldable electronic device is in the fully unfolded state, the wedge-shaped mounting block 14 may continue to rotate about the pivot pin 141 relative to the main swing arm 12 in the first direction, causing the first frame 20 mounted on the wedge-shaped mounting block 14 to continue to rotate in the first direction, affecting the flatness of the flexible screen in the unfolded state.

[0119] To solve the above-mentioned technical problems, the embodiments of this application may provide a third stop portion at the fifth end 14a of the wedge-shaped mounting block 14. When the main swing arm 12 rotates to the fully extended state in the second direction, the main swing arm 12 may abut against the third stop portion to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction around the shaft pin 141.

[0120] In one possible implementation, the third stop portion can be implemented in the following manner: (e.g.) Figure 9A As shown, the third stop portion is a first crossbeam 144 arranged radially parallel to the first bushing 142 on the pin 141. The first crossbeam 144 spans the first bushing 142 axially across the pin 141 and may have a distance between it and the first bushing 142 in the radial direction of the pin 141.

[0121] like Figure 9A and Figure 3E As shown, a sixth protrusion 1281 protruding outward is provided on the outer surface of the second bushing 128. The protrusion direction of the sixth protrusion 1281 is opposite to the bending direction of the arc-shaped arm.

[0122] like Figure 9B As shown, the first crossbeam 144 and the sixth end 14b of the wedge-shaped mounting block 14 are located on the same side of the main swing arm 12. When the main swing arm 12 rotates in the second direction, the first crossbeam 144 rotates towards the sixth protrusion 1281. When the main swing arm 12 rotates in the second direction to the fully extended state, the sixth protrusion 1281 abuts against the first crossbeam 144 to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction.

[0123] It should be noted that when the main swing arm 12 includes a first support 1262 and a second support 1263, a second bushing 128 can be respectively provided on the first support 1262 and the second support 1263, and each second bushing 128 is provided with a sixth protrusion 1281. Correspondingly, when the main swing arm 12 rotates to the fully extended state in the second direction, both sixth protrusions 1281 can abut against the first crossbeam 144 to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction.

[0124] In one possible implementation, the third stop portion can be implemented in the following manner: (e.g.) Figure 10A As shown, the first bushing 142 includes a first end face 142a, and a second groove 145 is formed by recessing a portion of the first end face 142a along the axial direction of the shaft pin 141. The second groove 145 can be configured as a third stop portion.

[0125] like Figure 10A and Figure 4B As shown, the second bushing 128 includes a second end face 128a opposite to the first end face 142a. The second end face 128a includes a seventh protrusion 1282, which protrudes along the axial direction of the pin 141 toward the first end face 142a.

[0126] like Figure 10B As shown, when the main swing arm 12 rotates in the second direction, the second groove 145 rotates around the pivot pin 141 in the first direction. When the main swing arm 12 rotates in the second direction to the fully extended state, the seventh protrusion 1282 abuts against the inner wall of the second groove 145 to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction.

[0127] It should be noted that the second groove 145 provides sufficient clearance for the main swing arm 12 to ensure that the seventh protrusion 1282 and the second groove 145 do not interfere with each other and can slide freely relative to each other in positions other than when the main swing arm 12 is in the fully extended state.

[0128] In one possible implementation, the third stop portion can be implemented in the following manner: (e.g.) Figure 11A As shown, the first end face 142a of the first bushing 142 includes an eighth protrusion 146, which can be configured as a third stop portion. The eighth protrusion 146 is formed by extending along the axial direction of the pin 141 toward the second end face 128a. That is, the eighth protrusion 146 protrudes toward the second end face 128a.

[0129] like Figure 11A and Figure 5B As shown, a portion of the second end face 128a is recessed along the axial direction of the shaft pin 141 to form a third groove 1283.

[0130] like Figure 11B As shown, when the main swing arm 12 rotates in the second direction, the eighth protrusion 146 rotates in the first direction within the third groove 1283. When the main swing arm 12 rotates in the second direction to the fully extended state, the eighth protrusion 146 abuts against the inner wall of the third groove 1283 to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction.

[0131] It should be noted that the third groove 1283 provides sufficient clearance for the eighth protrusion 146 to ensure that the eighth protrusion 146 and the third groove 1283 do not interfere with each other when the main swing arm 12 is in any position other than when it is fully extended.

[0132] In one possible implementation, the third stop portion can be implemented in the following manner: (e.g.) Figure 12A As shown, the wedge-shaped mounting block 14 includes a second crossbeam 147 arranged radially alongside the first bushing 142 on the pin 141, the second crossbeam 147 being configured as a third stop portion. The second crossbeam 147 axially spans the first bushing 142 on the pin 141 and is spaced from the first bushing 142 radially on the pin 141.

[0133] like Figure 12B As shown, the second crossbeam 147 and the sixth end 14b of the wedge-shaped mounting block 14 are respectively located on both sides of the main swing arm 12. The first surface 12c of the main swing arm 12 faces the second crossbeam 147 and faces away from the sixth end 14b of the wedge-shaped mounting block 14. When the main swing arm 12 rotates in the second direction, the second crossbeam 147 rotates about the pivot pin 141 towards the first surface 12c of the main swing arm 12. When the main swing arm 12 rotates in the second direction to its fully extended state, the second crossbeam 147 abuts against the first surface 12c of the main swing arm 12 to restrict the wedge-shaped mounting block 14 from continuing to rotate relative to the main swing arm 12 in the first direction.

[0134] It should be noted that the above embodiments are only illustrated by the example of the second crossbeam 147 being located above the first bushing 142, and do not imply a limitation on the position of the second crossbeam 147. For example, the second crossbeam 147 may also be located between the fifth end 14a and the sixth end 14b of the wedge-shaped mounting block 14.

[0135] It should be noted that there is sufficient clearance between the second crossbeam 147 and the main swing arm 12 to ensure that the second crossbeam 147 and the main swing arm 12 do not interfere with each other when the main swing arm 12 is in any position except when it is in the fully extended state.

[0136] It should also be noted that the various anti-detachment solutions and solutions for ensuring the flatness of the flexible screen provided in the above embodiments can be freely combined to form a rotating mechanism. For example, Figure 3C The anti-hair loss solutions shown can be respectively compared with Figure 9A , Figure 10A , Figure 11A or Figure 12A The solutions shown, designed to ensure the flatness of the flexible screen, form different rotating mechanisms. These are not listed individually here.

[0137] In addition, this application also provides a foldable electronic device, which may include a first main body, a second main body, a flexible screen, and any of the rotating mechanisms provided in the above embodiments. The first main body may include a first frame and a first portion of the body, and the second main body may include a second frame and a second portion of the body. The first and second main bodies are connected by the rotating mechanism, and the first and second main bodies can rotate around the rotating mechanism. The flexible screen may cover the first and second main bodies and be connected to them.

[0138] Thus, when the main swing arm of the foldable electronic device rotates to the first target position along the first direction, the first body and the second body are in a fully folded state, and the flexible screen is hidden between the first body and the second body. The third end of the main swing arm can abut against the first stop portion to limit the main swing arm from continuing to rotate along the first direction, thereby preventing the third end of the main swing arm from coming off the first slide groove.

[0139] When the main swing arm of the foldable electronic device rotates to the second target position along the second direction, the first and second main bodies are in a fully unfolded state, and the flexible screen lies flat on the surfaces of the first and second main bodies. The third end of the main swing arm can abut against the second stop portion to restrict the main swing arm from continuing to rotate along the second direction, thereby preventing the flexible screen from becoming uneven.

[0140] It is readily understood that, based on the several embodiments provided in this application, those skilled in the art can combine, split, or reorganize the embodiments of this application to obtain other embodiments, none of which exceed the protection scope of this application.

[0141] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A rotating mechanism, characterized in that, include: Base and main swing arm; The base includes a first sliding groove, which is an arc-shaped groove. The first sliding groove includes a first end and a second end disposed opposite to each other. The first end is provided with a first stop portion, and the second end is provided with a second stop portion. The first stop portion includes a first abutting surface located on the upper surface of the first sliding groove, and a second protrusion located on the lower surface of the first sliding groove. The first abutting surface and the second protrusion are opposite to each other. The main swing arm is partially disposed in the first slide groove and includes a third end located in the first slide groove; the two opposing surfaces of the third end respectively include a first protrusion and a third protrusion, the first protrusion protruding toward the upper surface of the first slide groove and the third protrusion protruding toward the lower surface of the first slide groove. The main swing arm is configured to rotate relative to the base, so that the third end of the main swing arm slides between the first end and the second end of the first groove. Specifically, when the main swing arm rotates to the first target position along the first direction, the first protrusion of the main swing arm abuts against the first abutting surface, and the third protrusion of the main swing arm abuts against the second protrusion to restrict the main swing arm from continuing to rotate along the first direction; when the main swing arm rotates to the second target position along the second direction, the third end of the main swing arm abuts against the second stop portion to restrict the main swing arm from continuing to rotate along the second direction, wherein the first direction is opposite to the second direction.

2. The rotating mechanism according to claim 1, characterized in that, The base includes an upper base and a lower base disposed opposite to each other, and there is a gap between the upper base and the lower base to form the first groove; The first stop portion includes a first abutting surface located on the upper base and facing the lower base; The first protrusion includes a second abutment surface facing the upper base; When the main swing arm rotates to the first target position along the first direction, the first contact surface abuts against the second contact surface to restrict the main swing arm from continuing to rotate along the first direction.

3. The rotating mechanism according to claim 2, characterized in that, The lower base includes a first groove and a slide rail that are recessed in the direction away from the upper base and are arranged along the sliding direction of the first slide rail. The slide rail protrudes in the direction of the upper base relative to the first groove. The second protrusion is located within the first groove, and the second protrusion includes a third abutting surface facing the second end of the first groove; The surface of the main swing arm facing away from the upper base includes a clearance groove for avoiding the second protrusion and a second slide groove corresponding to the slide rail. The clearance groove extends along the sliding direction of the main swing arm. The clearance groove includes a third protrusion protruding towards the lower base. The third protrusion is located at the third end of the main swing arm and includes a fourth abutment surface. When the main swing arm rotates to the first target position along the first direction, the third abutting surface abuts against the fourth abutting surface to restrict the main swing arm from continuing to rotate along the first direction.

4. The rotating mechanism according to claim 2, characterized in that, The lower base includes a first groove that is disposed along the sliding direction of the first groove and recessed away from the upper base; The first stop portion further includes a fourth protrusion located within the first groove, the fourth protrusion including a fifth abutting surface facing the second end of the first groove; The surface of the main swing arm facing away from the upper base includes a second sliding groove, the second sliding groove is recessed towards the upper base, and the second sliding groove includes a fifth protrusion protruding towards the lower base. The fifth protrusion is located at the third end of the main swing arm and includes a sixth abutment surface. When the main swing arm rotates to the first target position along the first direction, the fifth abutment surface abuts against the sixth abutment surface to restrict the main swing arm from continuing to rotate along the first direction.

5. The rotating mechanism according to claim 2, characterized in that, The rotating mechanism further includes: A shaft cover is located on the side of the main swing arm away from the base, and the shaft cover includes a rib protruding towards the lower base; The lower base includes a first groove that is disposed along the sliding direction of the first groove and recessed away from the upper base, and the first groove includes a first clearance hole; The rib passes through the first clearance hole and exposes the seventh abutting surface of the rib at the opening of the first clearance hole, with the seventh abutting surface facing the second end; The surface of the main swing arm away from the upper base includes a fifth protrusion protruding toward the lower base, and the fifth protrusion includes a sixth abutment surface. When the main swing arm rotates to the first target position along the first direction, the sixth abutment surface abuts against the seventh abutment surface to restrict the main swing arm from continuing to rotate along the first direction.

6. The rotating mechanism according to claim 1, characterized in that, The base includes an upper base and a lower base disposed opposite to each other, and there is a gap between the upper base and the lower base to form the first groove; The second stop portion is located on the upper base, and the second stop portion includes an eighth abutment surface facing the lower base; The third end of the main swing arm includes a ninth abutment surface; When the main swing arm rotates to the second target position along the second direction, the eighth abutment surface abuts against the ninth abutment surface to restrict the main swing arm from continuing to rotate along the second direction.

7. The rotating mechanism according to claim 6, characterized in that, The third end of the main swing arm has an opening, and the ninth abutment surface is located at the bottom of the opening. The opening divides the third end of the main swing arm into a first branch and a second branch. The upper base includes a second clearance hole and a third clearance hole for avoiding the first branch and the second branch; The eighth abutment surface is located between the second clearance hole and the third clearance hole; When the main swing arm rotates to the second target position along the second direction, the first branch is located in the second clearance hole, and the second branch is located in the third clearance hole.

8. The rotating mechanism according to claim 1, characterized in that, The rotating mechanism further includes: The shaft cover is located on the side of the main swing arm opposite to the base; The main swing arm also includes a fourth end located outside the first slide groove; a tenth abutment surface is included between the third end and the fourth end of the main swing arm, and the tenth abutment surface faces the shaft cover; When the main swing arm rotates to the second target position along the second direction, the tenth abutment surface abuts against the outer edge of the shaft cover.

9. The rotating mechanism according to claim 1 or 8, characterized in that, The main swing arm also includes a fourth end located outside the first slide groove; the rotating mechanism also includes: A wedge-shaped mounting block includes a fifth end and a sixth end that are arranged opposite to each other, wherein the fifth end of the wedge-shaped mounting block is rotatably connected to the fourth end of the main swing arm; The fifth end of the wedge-shaped mounting block is provided with a third stop portion; When the main swing arm rotates in the second direction, the wedge-shaped mounting block rotates relative to the main swing arm in the first direction; When the main swing arm rotates to the second target position along the second direction, the main swing arm abuts against the third stop portion to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm along the first direction.

10. The rotating mechanism according to claim 9, characterized in that, The fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing. The first bushing and the second bushing are connected by a pivot pin. The third stop portion is a first crossbeam arranged radially parallel to the first bushing on the pin. The first crossbeam crosses the first bushing in the axial direction of the pin and is spaced apart from the first bushing in the radial direction of the pin. The sixth end of the first crossbeam and the wedge-shaped mounting block are located on the same side of the main swing arm; The outer side of the second bushing is provided with a sixth protrusion that protrudes outward; When the main swing arm rotates in the second direction, the first crossbeam rotates toward the sixth protrusion; When the main swing arm rotates to the second target position along the second direction, the sixth protrusion abuts against the first crossbeam to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm along the first direction.

11. The rotating mechanism according to claim 9, characterized in that, The fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing. The first bushing and the second bushing are connected by a pivot pin. The first bushing includes a first end face, and the third stop portion is located on the first end face. The third stop portion is a second groove formed by a partial recess of the first end face along the axial direction of the pin. The second bushing includes a second end face opposite to the first end face, and the second end face includes a seventh protrusion that protrudes from the first end face along the axial direction of the pin. When the main swing arm rotates along the second direction, the second groove rotates around the seventh protrusion along the first direction; When the main swing arm rotates to the second target position along the second direction, the seventh protrusion abuts against the inner wall of the second groove to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm along the first direction.

12. The rotating mechanism according to claim 9, characterized in that, The fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing. The first bushing and the second bushing are connected by a pivot pin. The first bushing includes a first end face, and the second bushing includes a second end face opposite to the first end face; The third stop portion is located on the first end face, and the third stop portion is an eighth protrusion extending along the axial direction of the shaft pin toward the second end face. The second end face includes a third groove, which is formed by a portion of the second end face being recessed along the axial direction of the pin; When the main swing arm rotates along the second direction, the eighth protrusion rotates within the third groove along the first direction; When the main swing arm rotates to the second target position along the second direction, the eighth protrusion abuts against the inner wall of the third groove to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm along the first direction.

13. The rotating mechanism according to claim 9, characterized in that, The fifth end of the wedge-shaped mounting block includes a first bushing, and the fourth end of the main swing arm includes a second bushing. The first bushing and the second bushing are connected by a pivot pin. The third stop portion is a second crossbeam arranged radially parallel to the first bushing on the shaft pin. The second crossbeam crosses the first bushing in the axial direction of the shaft pin and is spaced apart from the first bushing in the radial direction of the shaft pin. The second crossbeam and the sixth end of the wedge-shaped mounting block are respectively located on both sides of the main swing arm; When the main swing arm rotates in the second direction, the second crossbeam rotates about the pivot pin toward the first surface of the main swing arm; When the main swing arm rotates to the second target position along the second direction, the second crossbeam abuts against the first surface of the main swing arm to restrict the wedge-shaped mounting block from continuing to rotate relative to the main swing arm along the first direction.

14. A foldable electronic device, characterized in that, include: The first main body, the second main body, the flexible screen, and the rotation mechanism as described in any one of claims 1 to 13; The first body and the second body are connected by the rotating mechanism, and the first body and the second body can rotate around the rotating mechanism; The flexible screen covers the first body and the second body, and is connected to the first body and the second body.

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