Electronic device

Abstract

The present application belongs to the technical field of communications. Disclosed is an electronic device, comprising a housing and a hinge mechanism, wherein the housing comprises a first frame body and a second frame body, which are rotationally connected to each other by means of the hinge mechanism; the hinge mechanism comprises a hinge base, frame-body connection portions and first swing arms; the first frame body and the second frame body are fixedly connected to the corresponding frame-body connection portions, respectively; a second end of each first swing arm is provided with a first limiting portion; each frame-body connection portion is provided with a second limiting portion, which is located at the end of the frame-body connection portion that faces the hinge base; each first limiting portion slides relative to the corresponding frame-body connection portion as the corresponding first swing arm rotates; when the electronic device is in an unfolded state, the first limiting portions are located at the ends of the frame-body connection portions that face away from the hinge base; and when the electronic device is in a folded state, the first limiting portions are located at the ends of the frame-body connection portions close to the hinge base, and abut against the second limiting portions.

Description

electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410515386.3, filed on April 26, 2024, entitled “Electronic Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to an electronic device. Background Technology

[0004] With the development of flexible display technology, foldable electronic devices are becoming increasingly popular. A foldable electronic device includes a first frame, a second frame, a flexible screen, and a hinge mechanism. The first and second frames are rotatably connected by the hinge mechanism. The flexible screen is mounted on the first and second frames. The first and second frames can rotate relative to each other, thus enabling the foldable electronic device to be folded and unfolded.

[0005] The hinge mechanism includes a base, a virtual swing arm, and a frame connection part, which is used to connect to the frame of the electronic device. Specifically, the bearing end of the virtual swing arm is slidably located within the bearing groove of the base, and the virtual swing arm and the frame connection part are rotatably connected via a rotating shaft. When the first and second frames rotate relative to the base, the bearing end of the virtual swing arm can slide along the extending direction of the bearing groove of the base.

[0006] However, when an electronic device is dropped in a folded state, the virtual swing arm bears the weight of the entire electronic device, which causes the virtual swing arm to be subjected to a large force. This can easily lead to the virtual swing arm breaking or coming out of the bearing groove, making it difficult for the hinge mechanism to open and close. Therefore, the reliability of electronic devices in related technologies is poor. Summary of the Invention

[0007] This application discloses an electronic device, comprising:

[0008] A housing, the housing comprising a first frame and a second frame;

[0009] A hinge mechanism is provided, in which the first frame and the second frame are rotatably connected to allow the electronic device to switch between an unfolded state and a folded state. The hinge mechanism includes a hinge base, a frame connecting portion, and a first swing arm. The first frame and the second frame are respectively fixedly connected to their respective frame connecting portions. The first end of the first swing arm is rotatably connected to the hinge base via a pivot, and the second end of the first swing arm is slidably connected to the frame connecting portion. The first swing arms, symmetrically arranged on both sides of the hinge base, are mutually engaged in transmission.

[0010] The second end of the first swing arm is provided with a first limiting part, and the frame connecting part is provided with a second limiting part. The second limiting part is located at the end of the frame connecting part facing the hinge base; the first limiting part slides relative to the frame connecting part as the first swing arm rotates.

[0011] When the electronic device is in the unfolded state, the first limiting part is located at the end of the frame connecting part away from the hinge base; when the electronic device is in the folded state, the first limiting part is located at the end of the frame connecting part close to the hinge base and abuts against the second limiting part.

[0012] In this embodiment of the application, when the electronic device is dropped in a folded state, the housing transmits part of the impact force to the first swing arm through the first limiting part and the second limiting part. This allows the first swing arm to share part of the impact force with the virtual swing arm, thereby reducing the impact force on the virtual swing arm and reducing the risk of the virtual swing arm breaking or coming out of the bearing groove. Thus, the reliability of the electronic device is improved. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the folded state of the hinge mechanism of an electronic device disclosed in an embodiment of this application;

[0014] Figure 2 is a schematic diagram of the unfolded state of the hinge mechanism of an electronic device disclosed in an embodiment of this application;

[0015] Figures 3 to 5 are schematic diagrams of the structure of some components of the hinge mechanism of an electronic device disclosed in the embodiments of this application;

[0016] Figure 6 is a schematic diagram of the structure of an electronic device in a folded state disclosed in an embodiment of this application.

[0017] Explanation of reference numerals in the attached drawings: 100-hinge mechanism, 110-hinge base, 111-arc-shaped slide groove, 120-first swing arm, 121-first limiting part, 130- Frame connecting part, 131-mounting hole, 1311-first hole section, 1312-second hole section, 140-second swing arm, 141-arc-shaped protrusion, 1411-rotation guide groove, 1411a-first rotation guide groove, 1411b-second rotation guide groove, 1412-deformation buffer groove, 1412a-first deformation buffer groove, 1412b-second deformation buffer groove, 1413-first arc-shaped protrusion, 1414-second arc-shaped protrusion, 142-swing arm body, 150-first rotating swing arm assembly, 160-second rotating swing arm assembly, 210-first frame, 220-second frame, 300-second limiting part, 310-cap body, 320-stop part. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] The electronic device includes a housing and a hinge mechanism 100. The housing provides mounting space for other components of the electronic device, such as circuit boards, flexible displays, and other electronic components. The housing includes a first frame 210 and a second frame 220, which are rotatably connected by the hinge mechanism 100 to allow the electronic device to switch between an unfolded state and a folded state.

[0021] Specifically, when the electronic device is in a folded state, the first frame 210 and the second frame 220 are stacked together, thereby making the electronic device smaller in size; when the electronic device is in an unfolded state, the angle between the first frame 210 and the second frame 220 increases, thereby making the electronic device larger in size.

[0022] The hinge mechanism 100 includes a hinge base 110, a frame connecting portion 130, a first swing arm 120, and a second swing arm 140. The first frame 210 and the second frame 220 are respectively fixedly connected to their corresponding frame connecting portions 130. There can be at least two frame connecting portions 130, with one fixedly connected to the first frame 210 and the other fixedly connected to the second frame 220.

[0023] The first end of the first swing arm 120 is rotatably connected to the hinge base 110 via a pivot. At this time, the first end of the first swing arm 120 rotates around the hinge base 110 with the pivot as the central axis. The second end of the first swing arm 120 is slidably connected to the frame connecting part 130. This means that the first swing arm 120 is slidably connected to its corresponding frame connecting part 130. For example, a sliding track groove can be provided on the frame connecting part 130, and the second end of the first swing arm 120 can slide into the sliding track groove. As the first swing arm 120 rotates, the second end of the first swing arm 120 slides within the sliding track groove. Simultaneously, the first swing arms 120 symmetrically arranged on both sides of the hinge base 110 are mutually engaged in transmission. Specifically, the hinge mechanism 100 includes at least two first swing arms 120 symmetrically arranged about the hinge base 110, one of which is used to connect the first frame 210 and the hinge base 110, and the other is used to connect the second frame 220 and the hinge base 110. At the same time, the two symmetrically arranged first swing arms 120 need to cooperate to achieve synchronous opening and closing of the first frame 210 and the second frame 220. Therefore, the first swing arm 120 here is a synchronous swing arm.

[0024] One end of the second swing arm 140 is slidably connected to the hinge base 110, and the other end is connected to the frame connecting part 130. Specifically, the second swing arm 140 and the frame connecting part 130 can be rotatably connected via a rotating shaft. There are at least two second swing arms 140, one for connecting the first frame 210 and the hinge base 110, and the other for connecting the second frame 220 and the hinge base 110. Specifically, the second swing arm 140 includes a swing arm body 142 and an arc-shaped protrusion 141 connected together. The end of the swing arm body 142 facing away from the arc-shaped protrusion 141 is connected to the frame connecting part 130. The hinge base 110 has an arc-shaped groove 111, and the arc-shaped protrusion 141 is located within the arc-shaped groove 111 and slides within it. When the arc-shaped protrusion 141 slides relative to the arc-shaped groove 111, the electronic device switches between an unfolded state and a folded state. The second swing arm 140 here is used to realize the relative rotation between the first frame 210 and the second frame 220 and the hinge base 110. The end of the second swing arm 140 that is slidably connected to the hinge base 110 is the bearing end; therefore, the arc-shaped protrusion 141 and the area of ​​the swing arm body 142 near the arc-shaped protrusion 141 are collectively referred to as virtual bearings, which slide in conjunction with the hinge base 110. Therefore, the second swing arm 140 is a virtual swing arm.

[0025] In related technologies, the second swing arm 140 is most prone to breakage during roller tests and maximum risk angle tests when the electronic device is in a folded state. This is because when the electronic device is dropped in a folded state, the first swing arm 120 slides relative to the frame connection 130, thus failing to share the force of the second swing arm 140, which bears the entire weight of the electronic device. The force that forces the second swing arm 140 to break is mainly the rebound force experienced by the electronic device. At the instant the electronic device touches the ground or the landing surface, there is relative sliding between the second swing arm 140 and the housing, thus providing some cushioning between them. Then, when a vertically upward reverse support force is applied to the housing on the ground or the plane of impact, the housing has a certain rebound force and moves upward. Since the first swing arm 120 slides relative to the frame connection 130, the force of the entire electronic device moving upward is applied to the second swing arm 140. As a result, the second swing arm 140 is subjected to a large force, which can easily cause the second swing arm 140 to break or easily cause the second swing arm 140 to come out of the arc-shaped slide groove 111. Therefore, the hinge mechanism 100 is difficult to open and close, so the reliability of the electronic device in the related technology is poor.

[0026] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0027] Please refer to Figures 1 to 6. This application discloses an electronic device in which a first swing arm 120 has a first limiting portion 121 at its second end. A frame connecting portion 130 has a second limiting portion 300 located at the end of the frame connecting portion 130 facing the hinge base 110. Here, the first limiting portion 121 is located at the end of the second limiting portion 300 away from the hinge base 110. Alternatively, it can be understood that the second limiting portion 300 is located between the first limiting portion 121 and the first end of the first swing arm 120. The first limiting portion 121 slides relative to the frame connecting portion 130 as the first swing arm 120 rotates. At this time, as the electronic device unfolds and folds, the first limiting portion 121 and the second limiting portion 300 move away from or closer to each other.

[0028] Specifically, as shown in Figure 2, when the electronic device is in the unfolded state, the first limiting part 121 is located at the end of the frame connecting part 130 away from the hinge base 110. During the process of switching the electronic device from the folded state to the unfolded state, the second end of the first swing arm 120 slides from the end of the frame connecting part 130 near the hinge base 110 toward the end of the frame connecting part 130 away from the hinge base 110, thus the second end of the first swing arm 120 gradually moves away from the hinge base 110. Since the first limiting part 121 is located at the second end of the first swing arm 120, the first limiting part 121 also gradually moves away from the hinge base 110, thereby increasing the distance between the first limiting part 121 and the second limiting part 300.

[0029] As shown in Figure 3, when the electronic device is in the folded state, the first limiting part 121 is located at the end of the frame connecting part 130 near the hinge base 110 and abuts against the second limiting part 300. During the process of switching the electronic device from the unfolded state to the folded state, the second end of the first swing arm 120 slides from the end of the frame connecting part 130 away from the hinge base 110 toward the end of the frame connecting part 130 near the hinge base 110, thus the second end of the first swing arm 120 gradually approaches the hinge base 110. Therefore, the first limiting part 121 also gradually approaches the hinge base 110 until the first limiting part 121 abuts against the second limiting part 300 near the hinge base 110. At this time, the first limiting part 121 and the second limiting part 300 mutually limit and cooperate.

[0030] As shown in Figure 6, when the electronic device disclosed in this application is dropped in a folded state, the housing moves downwards along with the hinge mechanism 100. When the housing contacts the ground or the drop surface, the ground or drop surface applies a vertically upward reverse support force to the housing. Here, at least one of the first frame 210 and the second frame 220 may contact the ground or the drop surface. At this time, the housing will have a certain rebound force, and the housing will drive the frame connection and the second limiting part 300 to move vertically upwards. At this time, the second limiting part 300 and the first limiting part 121 are locked in a vertically upward direction, so the second limiting part 300 will transfer part of the impact force to the first limiting part 121, and the first limiting part 121 will transfer it to the first swing arm 120. Therefore, the first swing arm 120 will share part of the weight of the electronic device. In the electronic device disclosed in this application, the virtual swing arm and the synchronous swing arm can jointly share the weight of the electronic device, thereby reducing the impact force on the virtual swing arm.

[0031] The middle position of the virtual swing arm is also called the neck of the virtual swing arm. In related technologies, during the drop of an electronic device in a folded state, the neck and bearing end of the virtual swing arm bear the enormous impact force from the weight of the entire device. Therefore, the fracture of the virtual swing arm is mainly concentrated at the neck and bearing end. However, in the electronic device disclosed in this application, the synchronous swing arm can share part of the weight of the electronic device, thus distributing some of the impact force. This significantly reduces the stress on the neck and bearing of the virtual swing arm, thereby greatly reducing the risk of fracture.

[0032] In the embodiments disclosed in this application, when the electronic device is dropped in a folded state, the housing transmits part of the impact force to the first swing arm 120 through the first limiting part 121 and the second limiting part 300. This allows the first swing arm 120 to share part of the impact force with the virtual swing arm, thereby reducing the impact force on the virtual swing arm and reducing the risk of the virtual swing arm breaking or coming out of the bearing groove, thus improving the reliability of the electronic device.

[0033] Furthermore, the first limiting part 121 and the second limiting part 300 can mutually limit each other when the electronic device is in a folded state, thus avoiding the risk of mutual misalignment between the frame of the electronic device and the hinge mechanism 100, thereby further improving the reliability of the electronic device.

[0034] In the above embodiments, the synchronous swing arms can be synchronously transmitted through gear assemblies, worm gear assemblies, or conveyor belt assemblies. Of course, the synchronous swing arms can also be synchronously transmitted through other means, which are not limited herein.

[0035] In the above embodiment, the second limiting part 300 can be disposed on the surface of the frame connecting part 130. In this case, the second limiting part 300 can be welded to the surface of the frame connecting part 130.

[0036] In an optional embodiment, the frame connecting portion 130 may have a mounting hole 131 extending through its thickness direction. Here, the thickness direction of the frame connecting portion 130 can be understood as the thickness direction of the first frame 210 and the second frame 220. A portion of the second limiting portion 300 may be located within the mounting hole 131. In this case, a portion of the second limiting portion 300 is located within the mounting hole 131, and another portion is located outside the mounting hole 131. In this case, the portion of the second limiting portion 300 outside the mounting hole 131 can be used to abut against the first limiting portion 121.

[0037] Compared to the solution where the second limiting part 300 is disposed on the surface of the frame connecting part 130, this solution has a smaller exposed volume of the second limiting part 300 under the condition that the length of the second limiting part 300 is the same, thus avoiding the risk of the second limiting part 300 interfering with other components of the electronic device.

[0038] Furthermore, in the embodiment where the second limiting part 300 is disposed on the surface of the frame connecting part 130, if the risk of interference between the second limiting part 300 and other components of the electronic device is to be avoided, the volume of the second limiting part 300 needs to be reduced. This increases the manufacturing difficulty of the second limiting part 300 and reduces the strength of the second limiting part 300 itself and the connection strength between the second limiting part 300 and the frame connecting part 130.

[0039] In this design, a portion of the second limiting part 300 is located inside the mounting hole 131, which makes the volume of the second limiting part 300 larger. As a result, the second limiting part 300 itself has higher strength, and it also has a larger connection area between the second limiting part 300 and the frame connecting part 130, thus increasing the connection strength between the second limiting part 300 and the frame connecting part 130.

[0040] In one embodiment, the second limiting part 300 is a rod-shaped structure. Of course, the second limiting part 300 can also be other rod-shaped structures, which are not limited in this article.

[0041] In another alternative embodiment, the mounting hole 131 may include a first hole segment 1311 and a second hole segment 1312 that are connected, wherein the diameter of the first hole segment 1311 may be larger than the diameter of the second hole segment 1312. Here, the mounting hole 131 may be a stepped hole, and the second hole segment 1312 is the end with the smaller diameter. In this case, the connection between the first hole segment 1311 and the second hole segment 1312 has a stepped surface, which can be understood as the outer end face of the second hole segment 1312.

[0042] The second limiting portion 300 includes a cap body 310 and a stop portion 320. At least a portion of the cap body 310 is located within the first hole segment 1311, and the cap body 310 can abut against one end of the second hole segment 1312. This means the cap body 310 abuts against a stepped surface. A portion of the stop portion 320 extends beyond the second hole segment 1312. Here, a portion of the stop portion 320 is located within the second hole segment 1312, and another portion extends from an opening at one end of the second hole segment 1312 opposite to the first hole segment 1311. When the electronic device is in a folded state, the first limiting portion 121 abuts against the portion of the stop portion 320 extending beyond the second hole segment 1312.

[0043] The cap 310 here can abut against one end of the second hole 1312, so the diameter of the cap 310 is larger than the diameter of the second hole 1312. The stop 320 can pass through the second hole 1312, so the diameter of the stop 320 is smaller than the diameter of the second hole 1312. Therefore, it can be seen that the diameter of the cap 310 is larger than the diameter of the stop 320, so the second limiting part 300 here can be a stepped shaft.

[0044] In this design, the cap 310 can abut against the stepped surface, thereby improving the stability and reliability of the installation of the second limiting part 300 and avoiding the risk of the second limiting part 300 detaching from the mounting hole 131.

[0045] In the above embodiments, the second limiting part 300 and the mounting hole 131 can be connected by an interference fit.

[0046] In an optional embodiment, the mounting hole 131 can be a threaded hole, which can be threadedly connected to the second limiting part 300. In this solution, the threaded connection facilitates the disassembly of the second limiting part 300 from the frame connection part 130, thus improving the maintainability of the hinge mechanism 100.

[0047] In another alternative embodiment, the frame connecting portion 130 can be welded to the second limiting portion 300. Specifically, the frame connecting portion 130 can be welded to the cap 310 of the second limiting portion 300. This solution simplifies the assembly method of the hinge mechanism 100.

[0048] To further improve the connection strength between the frame connecting part 130 and the second limiting part 300, the second limiting part 300 and the frame connecting part 130 can be connected by a combination of thread and welding.

[0049] In another embodiment, the second limiting part 300 and the frame connecting part 130 can also be an integral structural component, which can further improve the connection strength between the frame connecting part 130 and the second limiting part 300.

[0050] The connection method between the first limiting part 121 and the first swing arm 120 can be the same as the connection method between the second limiting part 300 and the frame connecting part 130. Therefore, the structure and shape of the first limiting part 121 can be the same as those of the second limiting part 300. For example, the first limiting part 121 can also be a stepped shaft.

[0051] In another alternative embodiment, the first swing arm 120 and the first limiting part 121 can be an integral structural component. This solution can further improve the connection strength between the first swing arm 120 and the first limiting part 121.

[0052] In the above embodiment, the first swing arm 120 may have a clearance notch, and the second limiting part 300 may slide within the clearance notch. This solution can avoid the risk of interference between the first swing arm 120 and the second limiting part 300. At the same time, it can also make the second limiting part 300 closer to the first swing arm 120, thereby shortening the length of the hinge mechanism 100.

[0053] To further improve the safety of the second swing arm 140, in another optional embodiment, at least one of the swing arm body 142 and the arc-shaped protrusion 141 may be provided with a deformation buffer groove 1412, which may be located on the side of the swing arm body 142 near the hinge base 110. This can be understood as creating a deformation buffer groove 1412 at the bearing end of the virtual swing arm. Specifically, this can be understood as creating a groove structure at the bearing position of the virtual swing arm. In this case, the groove structure at the hollowed-out area can increase the deformation performance of the virtual swing arm bearing, thereby reducing the stress on the bearing.

[0054] In this solution, when the virtual swing arm is subjected to a large impact force, the deformation buffer groove 1412 at the bearing end can increase the deformation performance of the bearing end, thereby avoiding the risk of bearing breakage of the virtual swing arm. Therefore, this application can further improve the safety performance of the second swing arm 140.

[0055] During the 300-cycle folding roller test and the 3-round risk angle drop test, the neck and bearing of the virtual swing arm of the electronic device disclosed in this application did not break, which greatly exceeded the standard test conditions (no breakage after 100 cycles of folding roller test and 1 round of risk angle drop test). Therefore, the electronic device disclosed in this application has significantly improved the problem of virtual swing arm breakage.

[0056] In another optional embodiment, the arc-shaped protrusion 141 forms a rotation guide groove 1411. This can be understood as the arc-shaped protrusion 141 being located at the side edge of the swing arm body 142. When the arc-shaped protrusion 141 and the swing arm body 142 have the same thickness, some material can be removed from the arc-shaped protrusion 141 to form the rotation guide groove 1411. Alternatively, the thickness of the arc-shaped protrusion 141 can be less than the thickness of the swing arm body 142. In this case, there is a height difference between the arc-shaped protrusion 141 and the swing arm body 142. The area where the height difference between the arc-shaped protrusion 141 and the swing arm body 142 is located can form a recessed structure, which can serve as the rotation guide groove 1411. The hinge base 110 can be provided with a guide portion, at least a portion of which can be located within the guide groove. The second swing arm 140 can be guided and engaged with the hinge base 110 through the rotation guide groove 1411 and the guide portion.

[0057] In this design, the rotation guide groove 1411 and the guide part can guide the second swing arm 140, thus further improving the rotational reliability of the second swing arm 140 and the hinge base 110.

[0058] In the above embodiment, the stress on the second swing arm 140 is mainly concentrated at the end of the rotation guide groove 1411 near the hinge base 110. Therefore, the fracture location of the second swing arm 140 is mainly concentrated at the end of the rotation guide groove 1411 near the hinge base 110.

[0059] Based on this, in another optional embodiment, the deformation buffer groove 1412 can be located at one end of the rotation guide groove 1411 near the hinge base 110. This solution can further increase the deformation performance of the end of the rotation guide groove 1411 near the hinge base 110, thereby reducing the stress at the end of the rotation guide groove 1411 near the hinge base 110, thus further improving the safety of the second swing arm 140.

[0060] Furthermore, the sidewall of the rotation guide groove 1411 may be provided with a deformation buffer groove 1412. Here, the sidewall refers to the sidewall near the swing arm body 142. Specifically, the rotation guide groove 1411 is a notch structure that extends along the side away from the swing arm body 142. The side of the rotation guide groove 1411 near the swing arm body 142 has a sidewall, while the side away from the swing arm body 142 does not. Therefore, the deformation buffer groove 1412 is provided on the side near the swing arm body 142. The deformation buffer groove 1412 may also extend to the swing arm body 142.

[0061] In this design, the rotating guide groove 1411 is connected to the deformation buffer groove 1412, which further increases the deformation capacity of the local position of the rotating guide groove 1411, thereby reducing the stress at the local position of the rotating guide groove 1411 and thus further improving the safety of the second swing arm 140.

[0062] In another alternative embodiment, the number of arc-shaped protrusions 141 is at least two, including a first arc-shaped protrusion 1413 and a second arc-shaped protrusion 1414, which can be located on opposite sides of the swing arm body 142. The first arc-shaped protrusion 1413 can be formed with a first rotation guide groove 1411a. The second arc-shaped protrusion 1414 can be formed with a second rotation guide groove 1411b.

[0063] The deformation buffer groove 1412 may include a first deformation buffer groove 1412a and a second deformation buffer groove 1412b. The first deformation buffer groove 1412a may be formed on the side wall of the first rotation guide groove 1411a. The second deformation buffer groove 1412b may be formed on the side wall of the second rotation guide groove 1411b.

[0064] In this design, deformation buffer grooves 1412 are provided on both opposite sides of the second swing arm 140, which can further improve the deformation performance of the bearing end of the second swing arm 140, thereby further reducing the risk of bearing end breakage of the second swing arm 140.

[0065] In the above embodiments, the hinge mechanism 100 may include a first rotating arm assembly 150 and a second rotating arm assembly 160, wherein both the first rotating arm assembly 150 and the second rotating arm assembly 160 include at least one first arm 120 and at least one second arm 140. The first rotating arm assembly 150 is used for a rotational connection between the first frame 210 and the hinge base 110. The second arm assembly 140 is used for a rotational connection between the second frame 220 and the hinge base 110.

[0066] In another alternative embodiment, at least one first swing arm 120 in the first rotating swing arm assembly 150 is provided with a first limiting portion 121, and the frame connecting portion 130 corresponding to the first frame 210 may be provided with at least one second limiting portion 300. At least one first limiting portion 121 in the first rotating swing arm assembly 150 and at least one second limiting portion 300 in the first frame 210 are provided in a one-to-one correspondence. In this case, the impact force received by the first frame 210 can be transmitted to at least one first swing arm 120 in the first rotating swing arm assembly 150 through the corresponding second limiting portion 300.

[0067] In another alternative embodiment, at least one first swing arm 120 in the second rotating swing arm assembly 160 may be provided with a first limiting portion 121, and the frame connecting portion 130 corresponding to the second frame 220 may be provided with at least one second limiting portion 300. The at least one first limiting portion 121 in the second rotating swing arm assembly 160 may correspond one-to-one with the at least one second limiting portion 300 in the second frame 220. In this case, the impact force received by the second frame 220 can be transmitted to at least one first swing arm 120 in the second rotating swing arm assembly 160 through the corresponding second limiting portion 300.

[0068] To further improve the reliability of the electronic device, in another optional embodiment, at least one first swing arm 120 in the first rotating swing arm assembly 150 is provided with a first limiting portion 121. Simultaneously, at least one first swing arm 120 in the second rotating swing arm assembly 160 may also be provided with a first limiting portion 121. In this solution, both the first rotating swing arm assembly 150 and the second swing arm 140 assembly are provided with the first limiting portion 121, so regardless of which side of the frame contacts the ground, the rebound force can be transmitted to the corresponding first swing arm 120, thereby further improving the reliability of the electronic device.

[0069] The first limiting part 121 and the second limiting part 300 in the above embodiments can be made of materials such as aluminum alloy and titanium alloy. Of course, the first limiting part 121 and the second limiting part 300 can also be made of other materials, which is not limited herein.

[0070] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, comprising: The housing includes a first frame (210) and a second frame (220); A hinge mechanism (100) is provided, in which the first frame (210) and the second frame (220) are rotatably connected to allow the electronic device to switch between an unfolded state and a folded state. The hinge mechanism (100) includes a hinge base (110), a frame connecting part (130), and a first swing arm (120). The first frame (210) and the second frame (220) are respectively fixedly connected to the corresponding frame connecting part (130). The first end of the first swing arm (120) is rotatably connected to the hinge base (110) via a pivot, and the second end of the first swing arm (120) is slidably connected to the frame connecting part (130). The first swing arms (120) symmetrically arranged on both sides of the hinge base (110) are mutually driven and engaged. The second end of the first swing arm (120) is provided with a first limiting part (121), and the frame connecting part (130) is provided with a second limiting part (300). The second limiting part (300) is located at the end of the frame connecting part (130) facing the hinge base (110). The first limiting part (121) slides relative to the frame connecting part (130) as the first swing arm (120) rotates. When the electronic device is in the unfolded state, the first limiting part (121) is located at the end of the frame connecting part (130) away from the hinge base (110); when the electronic device is in the folded state, the first limiting part (121) is located at the end of the frame connecting part (130) close to the hinge base (110) and abuts against the second limiting part (300).

2. The electronic device according to claim 1, wherein, The frame connecting part (130) has a mounting hole (131) that extends through its thickness direction, and part of the second limiting part (300) is located in the mounting hole (131).

3. The electronic device according to claim 2, wherein, The mounting hole (131) includes a first hole segment (1311) and a second hole segment (1312) that are connected to each other. The diameter of the first hole segment (1311) is larger than the diameter of the second hole segment (1312). The second limiting part (300) includes a cap (310) and a stop part (320). At least a portion of the cap (310) is located inside the first hole segment (1311), and the cap (310) abuts against one end of the second hole segment (1312). A portion of the stop part (320) extends out of the second hole segment (1312). When the electronic device is in the folded state, the first limiting part (121) abuts against the portion of the stop part (320) that extends out of the second hole segment (1312).

4. The electronic device according to claim 1, wherein, The hinge mechanism (100) further includes a second swing arm (140), which includes a swing arm body (142) and an arc-shaped protrusion (141) connected together. The end of the swing arm body (142) facing away from the arc-shaped protrusion (141) is connected to the frame connecting part (130). The hinge base (110) is provided with an arc-shaped groove (111), and the arc-shaped protrusion (141) is located in the arc-shaped groove (111) and slides in cooperation with the arc-shaped groove (111). When the arc-shaped protrusion (141) slides relative to the arc-shaped groove (111), the electronic device switches between the unfolded state and the folded state. At least one of the swing arm body (142) and the arc-shaped protrusion (141) is provided with a deformation buffer groove (1412), and the deformation buffer groove (1412) is located on the side of the swing arm body (142) near the hinge base (110).

5. The electronic device according to claim 4, wherein, The arc-shaped protrusion (141) forms a rotation guide groove (1411), the hinge base (110) is provided with a guide portion, at least part of the guide portion is located in the guide groove, the second swing arm (140) is guided and engaged with the hinge base (110) through the rotation guide groove (1411) and the guide portion, and the deformation buffer groove (1412) is located at one end of the rotation guide groove (1411) near the hinge base (110).

6. The electronic device according to claim 5, wherein, The deformation buffer groove (1412) is provided on the side wall of the rotation guide groove (1411).

7. The electronic device according to claim 5, wherein, The number of the arc-shaped protrusions (141) is at least two, including a first arc-shaped protrusion (1413) and a second arc-shaped protrusion (1414), the first arc-shaped protrusion (1413) and the second arc-shaped protrusion (1414) are respectively located on opposite sides of the swing arm body (142); the first arc-shaped protrusion (1413) forms a first rotation guide groove (1411a), and the second arc-shaped protrusion (1414) forms a second rotation guide groove (1411b); The deformation buffer groove (1412) includes a first deformation buffer groove (1412a) and a second deformation buffer groove (1412b). The first deformation buffer groove (1412a) is provided on the side wall of the first rotation guide groove (1411a), and the second deformation buffer groove (1412b) is provided on the side wall of the second rotation guide groove (1411b).

8. The electronic device according to claim 2, wherein, The mounting hole (131) is a threaded hole, and the mounting hole (131) is threadedly connected to the second limiting part (300); and / or, The frame connecting part (130) is welded to the second limiting part (300).

9. The electronic device according to claim 1, wherein, The first swing arm (120) and the first limiting part (121) are an integral structural component.

10. The electronic device according to claim 1, wherein, The hinge mechanism (100) includes a first rotating arm assembly (150) and a second rotating arm assembly (160). The first rotating arm assembly (150) is used for the rotational connection between the first frame (210) and the hinge base (110). The second rotating arm assembly (160) is used for the rotational connection between the second frame (220) and the hinge base (110). The first arm (120) in the first rotating arm assembly (150) and the first arm (120) in the second rotating arm assembly (160) are in a one-to-one transmission engagement. At least one of the first swing arms (120) in the first rotating swing arm assembly (150) is provided with a first limiting part (121), and at least one of the frame connecting parts (130) corresponding to the first frame (210) is provided with a second limiting part (300); at least one of the first limiting parts (121) in the first rotating swing arm assembly (150) and at least one of the second limiting parts (300) in the first frame (210) are provided in a one-to-one correspondence; At least one of the first swing arms (120) in the second rotating swing arm assembly (160) is provided with a first limiting part (121), and the frame connecting part (130) corresponding to the second frame (220) is provided with at least one second limiting part (300); at least one of the first limiting parts (121) in the second rotating swing arm assembly (160) and at least one of the second limiting parts (300) in the second frame (220) are provided in a one-to-one correspondence.

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