Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the technical field of communication. The hinge mechanism comprises hinge supports, a hinge base, a first swing arm, a second swing arm and a transmission assembly, the hinge base is arranged between the hinge supports, the first swing arm and the second swing arm are symmetrically arranged on the two sides of the hinge supports, the first swing arm and the second swing arm can rotate relative to the hinge base, and the transmission assembly is arranged on the hinge base. The first swing arm is in transmission connection with the second swing arm through the transmission assembly, and when the first swing arm rotates relative to the hinge base, the first swing arm drives the second swing arm to rotate relative to the hinge base through the transmission assembly. The electronic equipment comprises a first equipment main body, a second equipment main body and the hinge mechanism, wherein the first equipment main body is connected with the second equipment main body through the hinge mechanism; in the relative rotation process of the first equipment main body and the second equipment main body, the electronic equipment is switched between an unfolded state and a folded state.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a hinge mechanism and an electronic device. Background Art

[0002] With the development of technology, people's dependence on electronic devices is increasing. To improve the portability and use comfort of electronic devices, the application scope of foldable electronic devices is becoming wider and wider.

[0003] In related technologies, foldable electronic devices rely on a hinge mechanism to achieve folding and unfolding. The hinge mechanism includes several swing arms. To expand the screen accommodation space of the hinge mechanism, some swing arms and the hinge base are in sliding fit through an arc-shaped protrusion and an arc-shaped groove, so that the swing arms can rotate relative to the hinge base. However, in the folded state, the part of the arc-shaped protrusion extending into the arc-shaped groove is less, resulting in the arc-shaped protrusion being easily disengaged from the arc-shaped groove, which is not conducive to the reliability of the hinge mechanism in the folded state. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a hinge mechanism and an electronic device, which can solve the problem of poor reliability of the hinge mechanism in related technologies.

[0005] In a first aspect, the embodiments of this application provide a hinge mechanism, including a hinge bracket, a hinge base, a first swing arm, a second swing arm, and a transmission component. The hinge base is arranged between the hinge brackets. The first swing arm and the second swing arm are symmetrically arranged on both sides of the hinge brackets, and the first swing arm and the second swing arm can respectively rotate relative to the hinge base. The transmission component is arranged on the hinge base, and the first swing arm is in transmission connection with the second swing arm through the transmission component. When the first swing arm rotates relative to the hinge base, the first swing arm drives the second swing arm to rotate relative to the hinge base through the transmission component.

[0006] In a second aspect, the embodiments of this application further provide an electronic device, including a first device body, a second device body, and the above-mentioned hinge mechanism. The first device body is connected to the second device body through the hinge mechanism. During the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state.

[0007] In the embodiment of the present application, a transmission component is arranged in the hinge mechanism, so that the first swing arm and the second swing arm are in transmission connection through the transmission component. When the first swing arm rotates, the second swing arm is driven to rotate relative to the hinge base through the transmission component. Then, during the folding or unfolding process, the position of the first swing arm rotating relative to the hinge base determines the position of the second swing arm rotating relative to the hinge base, and the rotation synchronization of the first swing arm and the second swing arm is improved. In the folded state, restricted by the first swing arm and the transmission component, the second swing arm is not easily movable relative to the hinge base, avoiding the problem that the swing arm is easily separated from the hinge base due to the use of an arc-shaped protrusion and an arc-shaped groove between the swing arm and the hinge base, and the reliability of the hinge mechanism is improved. Description of the Drawings

[0008] Figure 1 is a schematic structural diagram of the hinge mechanism disclosed in the embodiment of the present application; Figure 2 is a top view of a partial structure of the hinge mechanism disclosed in the embodiment of the present application; Figure 3 is one of the schematic diagrams of a partial structure of the hinge mechanism disclosed in the embodiment of the present application; Figure 4 is the second schematic diagram of a partial structure of the hinge mechanism disclosed in the embodiment of the present application Figure 5 is a cross-sectional view of the hinge mechanism disclosed in the embodiment of the present application; Figure 6 is a top view of a partial structure of the hinge mechanism disclosed in the embodiment of the present application; Figure 7 is a schematic diagram of the mating structure between the first swing arm and the base disclosed in the embodiment of the present application; Figure 8 is a schematic diagram of the structure of the electronic device in the unfolded state disclosed in the embodiment of the present application; Figure 9 is a schematic diagram of the structure of the electronic device in the folded state disclosed in the embodiment of the present application; Figure 10 is a cross-sectional view of the electronic device in the folded state disclosed in the embodiment of the present application.

[0009] Description of the Reference Numerals: 100 - hinge base, 100a - mating groove, 110 - first partition, 120 - third partition, 130 - second partition, 140 - fourth partition, 200 - first swing arm, 210 - rack, 220 - first sliding plate, 300 - second swing arm, 310 - synchronous gear, 310a - rotating shaft, 320 - first sliding groove, 330 - second sliding plate, 400 - Transmission assembly, 410 - Transmission gear, 411 - First transmission tooth, 412 - Second transmission tooth, 413 - Avoidance groove, 420 - Tooth column, 500 - Hinge bracket, 510 - Second chute, 520 - Matching protrusion, 530 - Pin, A - First axis, 610 - First cam, 620 - Second cam, 630 - Elastic member, 710 - First device main body, 711 - First housing, 720 - Second device main body, 721 - Second housing, 730 - Button, 740 - Display screen, 800 - Door panel. Specific embodiments

[0010] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0011] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents an "or" relationship between the associated objects before and after.

[0012] Next, in conjunction with the accompanying drawings, the hinge mechanism and electronic device provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0013] Please refer to Figures 1 - 10 , the hinge mechanism disclosed in the embodiments of the present application includes a hinge bracket 500, a hinge base 100, a first swing arm 200, a second swing arm 300, and a transmission assembly 400. Among them, the hinge base 100 serves as the installation basis for the first swing arm 200 and the second swing arm 300. The hinge base 100 is disposed between the hinge brackets 500. Specifically, hinge brackets 500 are provided on both sides of the hinge base 100. The hinge brackets 500 are used to support the first swing arm 200 and the second swing arm 300, and both the first swing arm 200 and the second swing arm 300 can be connected to the hinge brackets 500.

[0014] The first swing arm 200 and the second swing arm 300 are symmetrically arranged on both sides of the hinge bracket 500. Specifically, the number of the first swing arms 200 and the second swing arms 300 is multiple. Every two first swing arms 200 form a group, and the two first swing arms 200 in each group are symmetrically arranged on both sides of the hinge bracket 500, that is, on both sides of the hinge base 100. Similarly, every two second swing arms 300 form a group, and the two second swing arms 300 in each group are symmetrically arranged on both sides of the hinge bracket 500, that is, on both sides of the hinge base 100. The first swing arm 200 and the second swing arm 300 can respectively rotate relative to the hinge base 100. Optionally, the first end of the second swing arm 300 is rotationally connected to the hinge base 100, and the second swing arm 300 can be rotationally connected to the hinge base 100 through a rotating shaft 310a. Refer to Figure 7 As shown, of course, the second swing arm 300 can also be rotationally connected to the hinge base 100 through a structure other than the rotating shaft 310a.

[0015] The transmission component 400 is arranged on the hinge base 100. The first swing arm 200 is in transmission connection with the second swing arm 300 through the transmission component 400. When the first swing arm 200 rotates relative to the hinge base 100, the first swing arm 200 drives the second swing arm 300 to slide relative to the hinge base 100 through the transmission component 400. Optionally, the main function of the transmission component 400 is to convert the rotational power of the first swing arm 200 into the rotational power of the second swing arm 300. The transmission component 400 can include two sets of crank-slider mechanisms. One set of crank-slider mechanisms converts the rotational power of the first swing arm 200 into moving power, and the other set of crank-slider mechanisms converts the moving power into the rotational power of the second swing arm 300. Of course, the transmission component 400 can also adopt other structures to transmit power, and the specific structure of the transmission component 400 is not limited in the embodiments of the present application.

[0016] In the embodiments of the present application, the hinge mechanism is provided with the transmission component 400, so that the first swing arm 200 and the second swing arm 300 are in transmission connection through the transmission component 400, and when the first swing arm 200 rotates, it drives the second swing arm 300 to rotate relative to the hinge base 100 through the transmission component 400. Then, during the folding or unfolding process, the position where the first swing arm 200 rotates relative to the hinge base 100 determines the position where the second swing arm 300 rotates relative to the hinge base 100, and the rotational synchronism of the first swing arm 200 and the second swing arm 300 is improved. In the folded state, restricted by the first swing arm 200 and the transmission component 400, the second swing arm 300 is not easy to move relative to the hinge base 100, avoiding the problem that the swing arm is easily separated from the hinge base 100 due to the adoption of an arc-shaped protrusion and an arc-shaped groove between the swing arm and the hinge base 100, and the reliability of the hinge mechanism is improved.

[0017] Optionally, refer to Figure 1As shown, the hinge mechanism further includes a door panel 800. The door panel 800 faces the first swing arm 200 and the second swing arm 300 respectively, and the door panel 800 is connected to the hinge bracket 500. When the first swing arm 200 and the second swing arm 300 rotate, the door panel 800 rotates relative to the hinge base 100. In this way, using the door panel 800 to block structures such as the first swing arm 200 and the second swing arm 300 is beneficial to improving the appearance performance of the hinge mechanism.

[0018] In the solution of the present application, referring to Figure 3 and Figure 6 As shown, the transmission assembly 400 includes a transmission gear 410 and a tooth column 420. The tooth column 420 and the transmission gear 410 are rotatably arranged on the hinge base 100. Optionally, the tooth column 420 and the hinge base 100, and the transmission gear 410 and the hinge base 100 can be rotationally connected through a columnar protrusion and a columnar groove. Of course, other structures can also be used to achieve rotational connection.

[0019] The tooth column 420 and the transmission gear 410 are meshed, and moreover, the first swing arm 200 is in transmission meshing with the tooth column 420, and the transmission gear 410 is in transmission meshing with the second swing arm 300. Optionally, the first swing arm 200 and the tooth column 420 can be directly meshed, or indirectly transmission meshed through other structures; the transmission gear 410 and the second swing arm 300 can be directly meshed, or indirectly transmission meshed through other structures. In short, the first swing arm 200 is in transmission connection with the second swing arm 300 through the tooth column 420 and the transmission gear 410.

[0020] When the first swing arm 200 rotates relative to the hinge base 100, the first swing arm 200 drives the tooth column 420 to rotate relative to the hinge base 100, and the tooth column 420 drives the second swing arm 300 to rotate relative to the hinge base 100 through the transmission gear 410.

[0021] Optionally, both the tooth column 420 and the transmission gear 410 can be columnar gears, and the rotation axis of the tooth column 420 can be parallel to the rotation axis of the transmission gear 410; or, both the tooth column 420 and the transmission gear 410 can be bevel gears, and the rotation axis of the tooth column 420 can intersect with the rotation axis of the transmission gear 410.

[0022] By adopting this embodiment, the first swing arm 200 and the second swing arm 300 are in transmission connection through the tooth column 420 and the transmission gear 410. The tooth meshing structure is beneficial to improving the transmission efficiency, and during the process of the first swing arm 200 driving the second swing arm 300 to rotate, the rotation stability of the second swing arm 300 is relatively high, and the transmission reliability is improved.

[0023] In a further embodiment, referring to Figures 2 - 6As shown, the first swing arm 200 includes a rack 210, the second swing arm 300 includes a synchronous gear 310, the rack 210 meshes with the tooth column 420, and the transmission gear 410 meshes with the synchronous gear 310. That is to say, a part of the first swing arm 200 directly meshes with the tooth column 420, and a part of the second swing arm 300 directly meshes with the transmission gear 410. Optionally, both the transmission gear 410 and the synchronous gear 310 are columnar gears, and the rotation axes of the transmission gear 410 and the synchronous gear 310 can be parallel; or, both the transmission gear 410 and the synchronous gear 310 are conical gears, and the rotation axes of the transmission gear 410 and the synchronous gear 310 can intersect.

[0024] When the first swing arm 200 rotates relative to the hinge base 100, the rack 210 drives the tooth column 420 to rotate relative to the hinge base 100, and the transmission gear 410 drives the second swing arm 300 to rotate relative to the hinge base 100 through the synchronous gear 310. Specifically, since the rack 210 meshes with the tooth column 420, the first swing arm 200 drives the tooth column 420 to rotate relative to the hinge base 100. Since the tooth column 420 meshes with the transmission gear 410, the tooth column 420 drives the transmission gear 410 to rotate relative to the hinge base 100. Since the transmission gear 410 meshes with the synchronous gear 310, the transmission gear 410 drives the second swing arm 300 to rotate relative to the hinge base 100.

[0025] Moreover, since the rack 210 meshes with the tooth column 420, when the tooth column 420 rotates relative to the hinge base 100, the first swing arm 200 will also slide a certain distance relative to the second swing arm 300.

[0026] Adopting this embodiment, the first swing arm 200 includes a rack 210, so that during the process of the first swing arm 200 driving the second swing arm 300 to rotate relative to the hinge base 100 through the transmission assembly 400, the rack 210 will also be driven to make the first swing arm 200 slide relative to the second swing arm 300, which is beneficial to expanding the screen accommodation space of the hinge mechanism, avoiding the display screen 740 from being squeezed and damaged, and is beneficial to improving the drop reliability of the hinge mechanism.

[0027] Of course, in other embodiments, the first swing arm 200 may not be provided with a rack 210, and the first swing arm 200 may be provided with other gears that directly mesh with the tooth column 420, so that the first swing arm 200 only rotates relative to the hinge base 100.

[0028] In an alternative embodiment, refer to Figure 6As shown, the transmission gear 410 is provided with a first transmission tooth 411 and a second transmission tooth 412 in sequence along the direction of its own rotation axis, the first transmission tooth 411 is meshed with the tooth column 420, and the second transmission tooth 412 is meshed with the synchronous gear 310. Optionally, the first transmission tooth 411 and the second transmission tooth 412 are arranged at intervals, and the tooth diameters of the two may be equal or unequal, and the extension length of the first transmission tooth 411 may be smaller than the extension length of the second transmission tooth 412, so that a part of the tooth column 420 is meshed with the first transmission tooth 411, and another part of the tooth column 420 is conveniently meshed with the rack 210.

[0029] With this embodiment, the same transmission gear 410 is meshed with the gear column 420 and the synchronous gear 310 at the same time, and the synchronous gear 310 is transmission-connected with the gear column 420 via the same transmission gear 410, which is beneficial to the stable transmission connection between the synchronous gear 310 and the gear column 420, and further beneficial to the stable transmission connection between the first swing arm 200 and the second swing arm 300, and beneficial to improving the transmission efficiency and transmission ratio.

[0030] Of course, in other embodiments, the number of transmission gears 410 is at least two, including a first transmission gear and a second transmission gear that are coaxially connected, the first transmission gear is provided with a first transmission tooth 411, and the second transmission gear is provided with a second transmission tooth 412, that is, different transmission gears 410 are respectively meshed with the gear column 420 and the synchronous gear 310.

[0031] In an alternative embodiment, reference Figure 2 and Figure 4 As shown, the hinge base 100 includes a first partition 110 and a second partition 130. The first partition 110 and the second partition 130 can both be plate-like structures. The first partition 110 and the second partition 130 are spaced apart in the direction of the rotation axis of the first swing arm 200, and the transmission gear 410 is rotatably disposed between the first partition 110 and the second partition 130.

[0032] Optionally, the first end of the transmission gear 410 can be rotationally connected to the first partition 110 via a first columnar protrusion and a first columnar groove, and the second end of the transmission gear 410 can be rotationally connected to the second partition 130 via a second columnar protrusion and a second columnar groove. Of course, a first rotating shaft can also be set between the first partition 110 and the second partition 130, and the transmission gear 410 is sleeved on the outside of the first rotating shaft, and the transmission gear 410 is rotationally matched with the first rotating shaft.

[0033] Optionally, the plane where the first partition 110 is located and the plane where the second partition 130 is located may be parallel to each other, and the planes where they are located are respectively perpendicular to the rotation axis of the transmission gear 410. Of course, the plane where the first partition 110 is located and the plane where the second partition 130 is located may intersect the rotation axis of the transmission gear 410 but not perpendicularly, and the plane where the first partition 110 is located and the plane where the second partition 130 is located may intersect.

[0034] By adopting this embodiment, relying on the first partition 110 and the second partition 130, the rotatable installation of the transmission gear 410 can be realized, and the transmission gear 410 can be limited from both sides, which is beneficial to improving the installation stability of the transmission gear 410 and avoiding displacement of the transmission gear 410 during rotation.

[0035] Of course, in other embodiments, the hinge base 100 may arrange the transmission gear 410 through other structures other than the first partition 110 and the second partition 130. Optionally, the hinge base 100 and the transmission gear 410 may achieve rotational cooperation through a first arc-shaped bearing and a first arc-shaped groove.

[0036] In a further embodiment, referring to Figure 2 and Figure 4 as shown, the hinge base 100 further includes a third partition 120. The third partition 120 is located between the first partition 110 and the second partition 130. Optionally, the third partition 120 may be a plate-like structure. The plane where the third partition 120 is located, the plane where the first partition 110 is located, and the plane where the second partition 130 is located are respectively parallel to each other. Of course, the plane where the third partition 120 is located may also intersect the plane where the first partition 110 is located; the synchronous gear 310 is rotatably arranged on the third partition 120. Optionally, the third partition 120 is connected to the rotating shaft 310a, the synchronous gear 310 is sleeved outside the rotating shaft 310a, and the synchronous gear 310 is rotationally matched with the rotating shaft 310a. Of course, the third partition 120 and the synchronous gear 310 may also achieve rotational connection through a third columnar protrusion and a third columnar groove.

[0037] The synchronous gear 310 is located on the side of the first partition 110 and the second partition 130, that is to say, the synchronous gear 310 is located on the side of the transmission gear 410 between the first partition 110 and the second partition 130, ensuring that the transmission gear 410 meshes with the synchronous gear 310 smoothly.

[0038] The transmission gear 410 is provided with an avoidance groove 413, and the avoidance groove 413 is located between the first transmission tooth 411 and the second transmission tooth 412. The third partition plate 120 is rotatably clamped in the avoidance groove 413. That is to say, a part of the third partition plate 120 can extend into the avoidance groove 413, but it will not affect the rotation process of the third partition plate 120. The avoidance groove 413 can be an arc-shaped groove, a square groove or other structures, and the specific structure of the avoidance groove 413 is not limited in the embodiment of the present application.

[0039] Adopting this embodiment, the hinge base 100 is further provided with a third partition plate 120, which can not only realize the rotatable installation of the synchronous gear 310, but also limit the synchronous gear 310. At the same time, the third partition plate 120 is rotatably clamped in the avoidance groove 413 of the transmission gear 410, so the third partition plate 120 further limits the transmission gear 410, which is beneficial to further improve the installation stability of the transmission gear 410 and avoid displacement of the transmission gear 410 and the synchronous gear 310 during the rotation process.

[0040] Of course, in other embodiments, the hinge base 100 can set the synchronous gear 310 through other structures other than the third partition plate 120. Optionally, the hinge base 100 and the synchronous gear 310 can achieve rotational cooperation through the second arc-shaped bearing bush and the second arc-shaped groove.

[0041] In a further embodiment, referring to Figure 2 and Figure 4 as shown, the hinge base 100 further includes a fourth partition plate 140. The fourth partition plate 140 is located on the side of the first partition plate 110 facing away from the second partition plate 120, and the tooth column 420 is rotatably arranged on the fourth partition plate 140.

[0042] Optionally, the fourth partition plate 140 can be a plate-like structure, and the plane where the fourth partition plate 140 is located can be parallel to the plane where the third partition plate 120 is located. Of course, the plane where the fourth partition plate 140 is located can also intersect with the plane where the third partition plate 120 is located; the tooth column 420 is rotatably arranged between the third partition plate 120 and the fourth partition plate 140. Further optionally, the first end of the tooth column 420 and the third partition plate 120 can achieve rotational connection through the fourth columnar protrusion and the fourth columnar groove, and the second end of the tooth column 420 and the fourth partition plate 140 can achieve rotational connection through the fifth columnar protrusion and the fifth columnar groove; of course, a second rotating shaft can also be arranged between the third partition plate 120 and the fourth partition plate 140, and the tooth column 420 is sleeved outside the second rotating shaft, and the tooth column 420 is rotationally matched with the second rotating shaft.

[0043] With this embodiment, a fourth partition 140 is further added to the hinge base 100, which can not only realize the rotatable installation of the tooth column 420, but also limit the tooth column 420, which is beneficial to further improve the installation stability of the tooth column 420 and prevent the tooth column 420 from shifting during rotation.

[0044] Of course, in other embodiments, the hinge base 100 can be provided with the tooth column 420 through other structures other than the fourth partition 140. Optionally, the hinge base 100 and the tooth column 420 can achieve rotational cooperation through a third arc-shaped bearing and a third arc-shaped groove.

[0045] In this embodiment, referring to Figure 2 and Figure 4 as shown, the transmission components 400 are symmetrically arranged on both sides of the hinge base 100. The transmission component 400 on the first side of the hinge base 100 is the first transmission component, and the transmission component 400 on the second side of the hinge base 100 is the second transmission component. The transmission gears 410 of the first transmission component and the transmission gears 410 of the second transmission component are installed between the first partition 110 and the second partition 130 at the same time. The third partition 120 installs the synchronous gears 310 on both sides of the hinge base 100 at the same time. Moreover, the tooth columns 420 of the first transmission component and the tooth columns 420 of the second transmission component are installed between the third partition 120 and the fourth partition 140 at the same time.

[0046] In an alternative embodiment, referring to Figure 3 as shown, the racks 210 of the two first swing arms 200 symmetrically arranged with respect to the hinge bracket 500 are staggeredly arranged to avoid interference between them, which is beneficial to the smooth sliding of the corresponding racks 210 driven by the respective first swing arms 200 during rotation.

[0047] In an alternative embodiment, in the thickness direction of the hinge mechanism, the transmission gear 410 and the rack 210 are respectively located on both sides of the tooth column 420.

[0048] In another embodiment, referring to Figure 2 and Figure 4 as shown, in the thickness direction of the hinge mechanism, the transmission gear 410 and the rack 210 are located on the same side of the tooth column 420, and the transmission gear 410 and the rack 210 are respectively opposite to the tooth column 420 in the thickness direction of the hinge mechanism. At the same time, the transmission gear 410 and the rack 210 are opposite in the direction of the rotation axis of the first swing arm 200. That is to say, in the thickness direction of the hinge mechanism, at least a part of the orthographic projection of the transmission gear 410 coincides with a part of the orthographic projection of the tooth column 420, and at least a part of the orthographic projection of the rack 210 coincides with a part of the projection of the tooth column 420.

[0049] With this embodiment, on the basis that the transmission gear 410, the tooth column 420 and the rack 210 are engaged in sequence, the transmission gear 410 and the rack 210 are located on the same side of the tooth column 420, and the structures of the three are relatively compact, which is beneficial to reducing the space occupied by the transmission gear 410, the tooth column 420 and the rack 210 in the thickness direction of the hinge mechanism, and is beneficial to realizing the thinning and lightening of the hinge mechanism.

[0050] In an alternative embodiment, referring to Figure 3 As shown, the first swing arm 200 and the hinge bracket 500 are rotatably connected about the first axis A, and the first axis A is parallel to the rotation axis of the first swing arm 200.

[0051] Optionally, the hinge mechanism further includes a pin 530. The pin 530 penetrates through the first swing arm 200 and extends into the hinge bracket 500. The axis of the pin 530 is the first axis A, so that the hinge bracket 500 can rotate relative to the first swing arm 200. Of course, the first swing arm 200 and the hinge bracket 500 can be rotatably connected through other structures such as a hinge structure.

[0052] With this embodiment, the first swing arm 200 and the hinge bracket 500 are rotatably connected. Then, during the process of the first swing arm 200 driving the hinge bracket 500 to rotate relative to the hinge base 100, the hinge bracket 500 can move within a certain range relative to the first swing arm 200, avoiding the problem of motion jamming of the hinge bracket 500 during the folding or unfolding process, which is beneficial to the smooth progress of the folding process and the unfolding process.

[0053] Of course, in other embodiments, the first swing arm 200 and the hinge bracket 500 can be fixedly connected by welding, bonding or other means.

[0054] In the solution of the present application, referring to Figure 3 As shown, one of the first swing arm 200 and the second swing arm 300 is provided with a first sliding plate 220, and the other is provided with a first sliding groove 320. The first sliding plate 220 extends into the first sliding groove 320, and the first sliding plate 220 is slidably matched with the first sliding groove 320.

[0055] Specifically, the first swing arm 200 can be provided with the first sliding plate 220, and the second swing arm 300 is provided with the first sliding groove 320. Optionally, the first sliding plate 220 and the first swing arm 200 can be of an integral structure; or, the first swing arm 200 is provided with the first sliding groove 320, and the second swing arm 300 is provided with the first sliding plate 220. Optionally, the first sliding plate 220 and the second swing arm 300 can be of an integral structure. Optionally, the structures of the first sliding plate 220 and the first sliding groove 320 are adapted to ensure that the direction of the first sliding plate 220 sliding relative to the first sliding groove 320 is constant.

[0056] Optionally, a first swing arm 200 and a second swing arm 300 located on the first side of the hinge base 100 are in sliding fit through a first sliding plate 220 and a first sliding groove 320, and the first swing arm 200 and the second swing arm 300 located on the second side of the hinge base 100 are also in sliding fit through the first sliding plate 220 and the first sliding groove 320.

[0057] With this embodiment, the sliding fit between the first swing arm 200 and the second swing arm 300 is realized through the first sliding plate 220 and the first sliding groove 320, which is beneficial to guiding the sliding direction of the first swing arm 200 relative to the second swing arm 300, making the sliding direction of the first swing arm 200 relative to the second swing arm 300 accurate and avoiding the first swing arm 200 sliding relative to the second swing arm 300 in other directions. Moreover, it is only necessary to respectively provide the first sliding plate 220 for the first swing arm 200 and the first sliding groove 320 for the second swing arm 300, without respectively providing complex-structured slide rails and sliders for the two to achieve sliding fit, which is beneficial to simplifying the structure of the hinge mechanism.

[0058] Of course, in other embodiments, the first swing arm 200 and the second swing arm 300 can achieve sliding fit through other structures other than the first sliding plate 220 and the first sliding groove 320. Optionally, the first swing arm 200 and the second swing arm 300 can achieve sliding fit through a first slide rail and a first slider.

[0059] In the solution of the present application, with reference to Figure 3 as shown, one of the second swing arm 300 and the hinge bracket 500 is provided with a second sliding plate 330, and the other is provided with a second sliding groove 510. The second sliding plate 330 extends into the second sliding groove 510, and the second sliding plate 330 is in sliding fit with the second sliding groove 510.

[0060] Specifically, the second swing arm 300 can be provided with the second sliding plate 330, and the hinge bracket 500 is provided with the second sliding groove 510. Optionally, the second swing arm 300 and the second sliding plate 330 can be of an integral structure; or, the second swing arm 300 is provided with the second sliding groove 510, and the hinge bracket 500 is provided with the second sliding plate 330. Optionally, the second sliding plate 330 and the hinge bracket 500 can be of an integral structure. Optionally, the structures of the second sliding plate 330 and the second sliding groove 510 are adapted to ensure that the sliding direction of the second sliding plate 330 relative to the second sliding groove 510 is constant.

[0061] Optionally, the second swing arm 300 and the hinge bracket 500 located on the first side of the hinge base 100 are in sliding fit through the second sliding plate 330 and the second sliding groove 510, and the second swing arm 300 and the hinge bracket 500 located on the second side of the hinge base 100 are also in sliding fit through the second sliding plate 330 and the second sliding groove 510.

[0062] In this embodiment, the second swing arm 300 and the hinge bracket 500 are slidably engaged through the second sliding plate 330 and the second sliding groove 510, which is beneficial to guiding the relative sliding direction of the second swing arm 300 and the hinge bracket 500, and avoiding the relative random sliding of the second swing arm 300 and the hinge bracket 500. Moreover, it is only necessary to provide the second sliding plate 330 for the second swing arm 300 and the second sliding groove 510 for the hinge bracket 500 respectively, without separately providing complex-structured slide rails and sliders for the two to achieve the sliding fit, which is beneficial to simplifying the structure of the hinge mechanism.

[0063] Of course, in other embodiments, the second swing arm 300 and the hinge bracket 500 can be slidably engaged through other structures other than the second sliding plate 330 and the second sliding groove 510. Optionally, the second swing arm 300 and the hinge bracket 500 can be slidably engaged through a second slide rail and a second slider.

[0064] In the solution of the present application, with reference to Figure 2 and Figure 4 As shown, one of the hinge base 100 and the hinge bracket 500 is provided with a mating groove 100a, and the other is provided with a mating protrusion 520, and the mating protrusion 520 is in mating connection with the mating groove 100a. Specifically, the hinge base 100 is provided with the mating groove 100a, and the hinge bracket 500 is provided with the mating protrusion 520, or the hinge base 100 is provided with the mating protrusion 520, and the hinge bracket 500 is provided with the mating groove 100a.

[0065] The structures of the mating protrusion 520 and the mating groove 100a can be the same or different, and the structures of the mating protrusion 520 and the mating groove 100a can be adapted to each other. Optionally, at least a part of the mating protrusion 520 extends into the mating groove 100a, and the mating protrusion 520 can only be in contact with the groove wall surface of the mating groove 100a. During the rotation of the hinge bracket 500 relative to the hinge base 100, the mating protrusion moves relative to the mating groove 100a.

[0066] Optionally, the hinge bracket 500 and the hinge base 100 on the first side of the hinge base 100 are connected by the mating protrusion 520 and the mating groove 100a, and the hinge bracket 500 and the hinge base 100 on the second side of the hinge base 100 are also connected by the mating protrusion 520 and the mating groove 100a.

[0067] In this embodiment, the hinge base 100 and the hinge bracket 500 are connected by the mating protrusion 520 and the mating groove 100a, which increases the connection area between the hinge bracket 500 and other components, and is beneficial to improving the stability of the hinge bracket 500 during the rotation process.

[0068] Of course, in other embodiments, the hinge base 100 and the hinge bracket 500 may not be provided with the matching groove 100 a and the matching protrusion 520 .

[0069] In an optional embodiment, the first swing arm 200, the second swing arm 300 and the transmission assembly 400 are each provided in a group.

[0070] In another embodiment, reference Figure 1 As shown, along the direction of the rotation axis of the first swing arm 200, multiple groups of the first swing arm 200, the second swing arm 300 and the transmission assembly 400 are arranged in sequence, that is, the hinge mechanism includes multiple groups of first swing arms 200, multiple groups of second swing arms 300 and multiple groups of transmission assemblies 400, and each group of first swing arms 200, each group of second swing arms 300 and each group of transmission assemblies 400 correspond to each other one by one.

[0071] By adopting this embodiment, along the direction of the rotation axis of the first swing arm 200, the number of the first swing arm 200, the second swing arm 300 and the transmission assembly 400 increases. Then, each group of first swing arms 200 is respectively connected to each group of second swing arms 300 through the corresponding transmission assembly 400, and the rotation synchronization between each group of first swing arms 200 and each group of second swing arms 300 is improved. Each group of second swing arms 300 is not easy to move relative to the hinge base 100, which is beneficial to further improve the reliability of the hinge mechanism.

[0072] In an alternative embodiment, reference Figure 6 As shown, the hinge mechanism further includes a first cam 610, a second cam 620 and an elastic member 630, the elastic member 630 can be but not limited to a spring, the first cam 610, the elastic member 630 and the second cam 620 are respectively sleeved on the outside of the rotating shaft 310a. The second swing arm 300 is provided with a first barrel and a second barrel, the first barrel and the second barrel are both sleeved on the outside of the rotating shaft 310a, and the first cam 610, the second cam 620 and the elastic member 630 are located between the first barrel and the second barrel.

[0073] The outer surface of the first cylinder part is provided with a plurality of transmission teeth, so that the first cylinder part forms the synchronous gear 310 in the above text. The end of the first cylinder part is provided with a first curved surface, and the first cam 610 is provided with a second curved surface. The first curved surface and the second curved surface cooperate with each other, so that when the second swing arm 300 rotates, the first cam 610 is driven to move along the axial direction of the rotating shaft 310a through the first curved surface and the second curved surface. The first cam 610 acts on the first end of the elastic member 630, and the elastic member 630 generates elastic deformation. At the same time, the end of the second cylinder part is provided with a third curved surface, and the second cam 620 is provided with a fourth curved surface. The third curved surface and the fourth curved surface cooperate with each other, so that when the second swing arm 300 rotates, the second cam 620 is driven to move along the axial direction of the rotating shaft 310a through the third curved surface and the fourth curved surface. The second cam 620 also acts on the second end of the elastic member 630, and the elastic member 630 further generates elastic deformation. The above structure can provide torque during the rotation of the hinge 1, ensuring that the hinge can hover.

[0074] Based on the hinge mechanism disclosed in the present application, an embodiment of the present application further discloses an electronic device. Refer to Figures 8 - 10 As shown, the electronic device includes a first device body 710, a second device body 720, and the hinge mechanism in the above embodiment. The first device body 710 is connected to the second device body 720 through the hinge mechanism. During the relative rotation of the first device body 710 and the second device body 720, the electronic device switches between the unfolded state and the folded state.

[0075] Optionally, the first swing arm 200, the second swing arm 300, and the hinge bracket 500 are provided on both sides of the hinge base 100. The two hinge brackets 500 located on both sides of the hinge base 100 are respectively connected to the first device body 710 and the second device body 720. Refer to Figure 10 As shown, the first device body 710 includes a first frame 711, the second device body 720 includes a second frame 721, and the first frame 711 and the second frame 721 are respectively connected to the corresponding hinge brackets 500. Further optionally, the first frame 711 and the second frame 721 are respectively connected to the corresponding hinge brackets 500 by means of welding, bonding, screw connection, etc.

[0076] With this embodiment, a transmission component 400 is provided in the hinge mechanism of the electronic device, so that a transmission connection is achieved between the first swing arm 200 and the second swing arm 300 through the transmission component 400. The position where the first swing arm 200 rotates relative to the hinge base 100 determines the position where the second swing arm 300 rotates relative to the hinge bracket 500. When the hinge mechanism is in the folded state, restricted by the first swing arm 200 and the transmission component 400, the second swing arm 300 is not likely to move relative to the hinge base 100, avoiding the problem that the swing arm is likely to disengage from the hinge base 100 due to the use of an arc-shaped protrusion and an arc-shaped groove between the swing arm and the hinge base 100, which is beneficial to improving the drop reliability of the electronic device.

[0077] Optionally, referring to Figure 8 and Figure 9 As shown, the electronic device further includes a button 730 and a display screen 740. The button 730 is provided on at least one of the first device body 710 and the second device body 720. A part of the display screen 740 is connected to the first device body 710, and a second part of the display screen 740 is connected to the second device body 720. During the folding or unfolding process of the electronic device, the display screen 740 is deformed.

[0078] The electronic device disclosed in the embodiments of the present application can be devices such as a smart phone, a tablet computer, an e-book reader, a wearable device, an electronic game console, etc. The embodiments of the present application do not limit the specific types of electronic devices.

[0079] The embodiments of the present application have been described above with reference to the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A hinge mechanism, characterized in that, It includes a hinge bracket, a hinge base, a first swing arm, a second swing arm and a transmission assembly. The hinge base is arranged between the hinge brackets. The first swing arm and the second swing arm are symmetrically arranged on both sides of the hinge brackets, and the first swing arm and the second swing arm are respectively rotatable relative to the hinge base. The transmission assembly is arranged on the hinge base. The first swing arm is in transmission connection with the second swing arm through the transmission assembly. When the first swing arm rotates relative to the hinge base, the first swing arm drives the second swing arm to rotate relative to the hinge base through the transmission assembly.

2. The hinge mechanism according to claim 1, wherein The transmission assembly includes a transmission gear and a tooth column. The tooth column and the transmission gear are rotatably arranged on the hinge base. The tooth column and the transmission gear are meshed with each other. The first swing arm is in transmission meshing with the tooth column, and the transmission gear is in transmission meshing with the second swing arm. When the first swing arm rotates relative to the hinge base, the first swing arm drives the tooth column to rotate relative to the hinge base, and the tooth column drives the second swing arm to rotate relative to the hinge base through the transmission gear.

3. The hinge mechanism according to claim 2, characterized in that, The first swing arm includes a rack, and the second swing arm includes a synchronous gear. The rack is meshed with the tooth column, and the transmission gear is meshed with the synchronous gear. When the first swing arm rotates relative to the hinge base, the rack drives the tooth column to rotate relative to the hinge base, and the transmission gear drives the second swing arm to rotate relative to the hinge base through the synchronous gear.

4. The hinge mechanism according to claim 3, characterized in that, The transmission gear is sequentially provided with a first transmission tooth and a second transmission tooth along the direction of its rotation axis. The first transmission tooth is meshed with the tooth column, and the second transmission tooth is meshed with the synchronous gear.

5. The hinge mechanism according to claim 4, characterized in that, The hinge base includes a first partition and a second partition. The first partition and the second partition are spaced apart along the direction of the rotation axis of the first swing arm. The transmission gear is rotatably arranged between the first partition and the second partition.

6. The hinge mechanism according to claim 5, characterized in that, The hinge base further includes a third partition. The third partition is located between the first partition and the second partition. The synchronous gear is rotatably arranged on the third partition, and the synchronous gear is located on the side of the first partition and the second partition. The transmission gear is provided with an avoidance groove. The avoidance groove is located between the first transmission tooth and the second transmission tooth. The third partition is rotatably clamped in the avoidance groove.

7. The hinge mechanism according to claim 6, characterized in that, The hinge base further includes a fourth partition. The fourth partition is located on the side of the first partition facing away from the second partition. The tooth column is rotatably arranged between the fourth partition and the third partition.

8. The hinge mechanism according to claim 3, characterized in that, In the thickness direction of the hinge mechanism, the transmission gear and the rack are located on the same side of the tooth column.

9. The hinge mechanism according to claim 1, characterized in that, The first swing arm is rotationally connected to the hinge bracket around a first axis, and the first axis is parallel to the rotation axis of the first swing arm.

10. The hinge mechanism according to claim 1, wherein One of the first swing arm and the second swing arm is provided with a first sliding plate, and the other is provided with a first sliding groove. The first sliding plate extends into the first sliding groove, and the first sliding plate is slidably engaged with the first sliding groove.

11. The hinge mechanism according to claim 1, characterized in that, One of the second swing arm and the hinge bracket is provided with a second sliding plate, and the other is provided with a second sliding groove. The second sliding plate extends into the second sliding groove, and the second sliding plate is slidably engaged with the second sliding groove.

12. The hinge mechanism according to claim 1, characterized in that, One of the hinge base and the hinge bracket is provided with a mating groove, and the other is provided with a mating protrusion. The mating protrusion is connected to the mating groove in a mating manner.

13. The hinge mechanism according to claim 1, characterized in that, Along the direction of the rotation axis of the first swing arm, multiple groups of the first swing arm, the second swing arm, and the transmission assembly are arranged in sequence.

14. An electronic device, characterized in that, It includes a first device body, a second device body, and the hinge mechanism according to any one of claims 1-13. The first device body is connected to the second device body through the hinge mechanism. During the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state.

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