Hinge mechanism and electronic device

Abstract

The utility model discloses a hinge mechanism and electronic equipment, and belongs to the technical field of electronic products. The hinge mechanism is used for rotationally connecting a first machine body and a second machine body of the electronic equipment, and comprises a base, a first swing arm, a second swing arm, a first cam, a second cam and an elastic piece, and the first swing arm and the second swing arm are arranged on the base at an interval; one end of the first swing arm and one end of the second swing arm are both used for being connected with a first machine body or a second machine body, the other end of the first swing arm and the other end of the second swing arm are both rotationally connected with the base, and a first cam part is arranged on the side, facing the second swing arm, of the first swing arm in a protruding mode. A second cam part is convexly arranged on one side, facing the first swing arm, of the second swing arm; the first cam, the second cam and the elastic piece are all movably arranged on the base, the elastic piece is arranged between the first cam and the second cam, the first cam part is matched with the first cam, and the second cam part is matched with the second cam.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic products, and specifically relates to a hinge mechanism and an electronic device. Background Art

[0002] With the rapid development of the electronic equipment industry, people's demand for electronic equipment is constantly increasing. In pursuit of a better user experience, electronic devices are moving towards large-screen displays. In order to take into account their portability, foldable electronic devices have become the current mainstream. Foldable electronic devices on the market are mainly divided into two categories: left-right folding and up-down folding. The principles of the two are similar, that is, the opening and closing of the two sides of the fuselage are manually controlled, and the opening and closing angles of the fuselage on both sides of the electronic device are controlled by the hinge mechanism.

[0003] Specifically, the synchronous swing arm in the hinge mechanism controls the opening and closing angles of the two sides of the fuselage to be consistent. At the same time, in order to improve the user experience of opening and closing the electronic device, a cam is also provided in the hinge mechanism. The synchronous swing arm cooperates with the cam through the cam part thereon. During the rotation of the synchronous swing arm, the cam part contacts different surfaces of the cam, so that the cam exerts different degrees of compression on the spring set on one side, thereby realizing the hovering function of the electronic device and forming a damping feeling for opening and closing the electronic device. However, due to the actual processing error of the cam, the force generated after the cam part cooperates with the cam is not on the axis of the hinge mechanism's rotating shaft. Therefore, when the hinge mechanism is working, it is easy to have a problem of poor flatness, which easily leads to the problem of poor flatness of the flexible screen of the electronic device.

[0004] In summary, the hinge mechanism involved in the related art has the problem of poor flatness. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device that can solve the problem of poor flatness of the hinge mechanism involved in the related art.

[0006] The embodiment of the present application provides a hinge mechanism for rotatably connecting a first body and a second body of an electronic device, wherein the hinge mechanism comprises a base, a first swing arm, a second swing arm, a first cam, a second cam and an elastic member.

[0007] The first swing arm and the second swing arm are arranged at intervals on the base, and one end of the first swing arm and one end of the second swing arm are both used to be connected to the first fuselage or the second fuselage, the other end of the first swing arm and the other end of the second swing arm are both rotatably connected to the base, and the first swing arm is provided with a first cam portion protruding from one side of the first swing arm toward the second swing arm, and the second swing arm is provided with a second cam portion protruding from one side of the second swing arm toward the first swing arm;

[0008] The first cam, the second cam and the elastic member can all be movably disposed on the base, and the elastic member is disposed between the first cam and the second cam, the first cam portion cooperates with the first cam, and the second cam portion cooperates with the second cam.

[0009] An embodiment of the present application provides an electronic device, including the hinge mechanism described above, the first body and the second body, wherein the first body and the second body are rotatably connected via the hinge mechanism.

[0010] In the embodiment of the present application, since the elastic member is arranged between the first cam and the second cam, and the first cam part cooperates with the first cam, and the second cam part cooperates with the second cam, during the rotation of the first swing arm and the second swing arm relative to the base, the first cam part and the second cam part can squeeze the first cam and the second cam, so that the first cam and the second cam can squeeze the elastic member together, that is, the elastic member can be limited by the first cam and the second cam, which makes the flatness of the entire hinge mechanism better. At the same time, the eccentric force generated by the cooperation of the first cam part and the first cam can be offset by the eccentric force generated by the cooperation of the second cam part and the second cam, so that the final force is located as far as possible on the axis of the hinge mechanism to improve the flatness of the hinge mechanism. In addition, the first cam and the second cam can produce different degrees of squeezing on the elastic member in the setting direction of the first cam and the second cam, and the damping force generated by the elastic member is greater. It can be seen from this that this embodiment can enable the electronic device to have a hovering function while improving the damping feeling of opening and closing the electronic device and further improving the flatness of the hinge mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figures 1 to 3 A schematic diagram of a partial structure of a hinge mechanism disclosed in an embodiment of the present application;

[0012] Figure 4 It is a structural schematic diagram of the hinge mechanism disclosed in the embodiment of the present application;

[0013] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0014] Figure 6 This is an exploded view of the hinge mechanism disclosed in the embodiment of the present application.

[0015] Description of reference numerals:

[0016] 100-base, 110-fourth cam portion, 120-sixth cam portion;

[0017] 200-first swing arm, 210-first cam portion, 220-third cam portion, 230-first sub-swing arm, 240-second sub-swing arm;

[0018] 300 - second swing arm, 310 - second cam portion, 320 - fifth cam portion, 330 - third sub-swing arm, 340 - fourth sub-swing arm;

[0019] 410 - first cam, 420 - second cam;

[0020] 500-elastic parts;

[0021] 600-Body fixing bracket;

[0022] 700-third swing arm;

[0023] 800-first gear set;

[0024] 910-synchronizing shaft, 920-damping spring, 930-door panel. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] The hinge mechanism disclosed in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0028] Please refer to Figure 1-Figure 6 The present application discloses a hinge mechanism, which includes a base 100, a first swing arm 200, a second swing arm 300, a first cam 410, a second cam 420 and an elastic member 500.

[0029] The hinge mechanism is used to rotatably connect the first body and the second body of the electronic device. Through the hinge mechanism, at least part of the first body and the second body of the electronic device can be moved closer to or farther away from each other to achieve the folding function or unfolding function of the electronic device.

[0030] The base 100 is a basic component of the hinge mechanism, which can provide a mounting base for other components of the hinge mechanism, such as providing a mounting base for the first swing arm 200, the second swing arm 300, the first cam 410, the second cam 420 and the elastic member 500. Specifically, a synchronization shaft 910 is provided on the base 100, the first swing arm 200 and the second swing arm 300 are arranged at intervals on the base 100, and one end of the first swing arm 200 and one end of the second swing arm 300 are both used to be connected to the first fuselage or the second fuselage, the other end of the first swing arm 200 and the other end of the second swing arm 300 are both rotatably connected to the base 100, specifically rotatably connected to the synchronization shaft 910, and the first swing arm 200 is provided with a first cam portion 210 protruding from one side of the second swing arm 300, and the second swing arm 300 is provided with a second cam portion 310 protruding from one side of the first swing arm 200, that is, the first cam portion 210 and the second cam portion 310 are arranged opposite to each other.

[0031] The first cam 410, the second cam 420 and the elastic member 500 can all be movably disposed on the base 100. Specifically, the first cam 410, the second cam 420 and the elastic member 500 are all sleeved on the synchronization shaft 910, and the elastic member 500 is disposed between the first cam 410 and the second cam 420. The first cam 410 and the second cam 420 can slide along the extension direction of the synchronization shaft 910 to squeeze the elastic member 500.

[0032] During the rotation of the first swing arm 200 and the second swing arm 300 relative to the base 100, the first cam portion 210 can cooperate with the first cam 410, and the second cam portion 310 can cooperate with the second cam 420. The first swing arm 200 can squeeze the first cam 410 along the first direction through the first cam portion 210, and the second swing arm 300 can squeeze the second cam 420 along the second direction through the second cam portion 310. The first direction is opposite to the second direction, and both are parallel to the extension direction of the synchronization shaft 910.

[0033] It can be seen that the first swing arm 200, the first cam 410, the elastic member 500, the second cam 420 and the second swing arm 300 are arranged in sequence along the extension direction of the synchronization shaft 910, that is, they are arranged in sequence along the length direction of the hinge mechanism, and the first cam 410 and the second cam 420 can be subjected to the extrusion force applied by the first swing arm 200 and the second swing arm 300, so that the elastic member 500 is squeezed between the first cam 410 and the second cam 420, and then squeezed between the first swing arm 200 and the second swing arm 300. At the same time, since the reaction force of the elastic member 500 on the first swing arm 200 and the second swing arm 300 is relatively balanced, the flatness of the hinge mechanism can be improved.

[0034] In the embodiment of the present application, since the elastic member 500 is arranged between the first cam 410 and the second cam 420, and the first cam portion 210 cooperates with the first cam 410, and the second cam portion 310 cooperates with the second cam 420, therefore, during the rotation of the first swing arm 200 and the second swing arm 300 relative to the base 100, the first cam portion 210 and the second cam portion 310 can squeeze the first cam 410 and the second cam 420, so that the first cam 410 and the second cam 420 jointly squeeze the elastic member 500, that is, the elastic member 500 can be limited by the first cam 410 and the second cam 420, which makes the flatness of the entire hinge mechanism better. At the same time, the eccentric force generated by the cooperation of the first cam portion 210 and the first cam 410 can be offset by the eccentric force generated by the cooperation of the second cam portion 310 and the second cam 420, so that the final force generated is as close to the axis of the hinge mechanism as possible to improve the flatness of the hinge mechanism. In addition, the first cam 410 and the second cam 420 can produce different degrees of compression on the elastic member 500 in the direction in which the first cam 410 and the second cam 420 are set, and the damping force generated by the elastic member 500 is greater. It can be seen that this embodiment can enable the electronic device to have a hovering function while improving the damping feeling of opening and closing the electronic device and further improving the flatness of the hinge mechanism.

[0035] Optionally, refer to Figure 1 and Figure 2 The first cam portion 210 and the second cam portion 310 can be symmetrically arranged about the first plane, and the first plane is perpendicular to the rotation axis of the first swing arm 200 or the second swing arm 300, that is, perpendicular to the axis of the above-mentioned synchronous shaft 910. At this time, the first cam portion 210 and the second cam portion 310 are mirror-arranged, and then the first cam 410 and the second cam 420 are mirror-arranged, so that the extrusion force applied by the first swing arm 200 to the first cam 410 that is offset from the axis of the synchronous shaft 910, that is, the extrusion force applied by the second swing arm 300 to the second cam 420 that is offset from the axis of the synchronous shaft 910 can be offset, and the final force generated extends along the axis of the synchronous shaft 910 to further improve the flatness of the hinge mechanism. Of course, the first cam portion 210 and the second cam portion 310 may also not be symmetrically arranged about the first plane.

[0036] In addition, even if the diameters of the first cam portion 210, the second cam portion 310, the first cam 410, and the second cam 420 are reduced, the above-mentioned offset effect is not affected, and at the same time, the damping feeling of the above-mentioned opening and closing electronic device is not affected. In addition, since the force exerted on the first cam 410 and the second cam 420 during the rotation process is relatively uniform, the stress generated at various locations on the mating surfaces of the first cam portion 210 and the first cam 410 is relatively uniform, and the stress generated at various locations on the mating surfaces of the second cam portion 310 and the second cam 420 is also relatively uniform, which can effectively improve the eccentric wear problem of the first cam 410, the second cam 420, the first cam portion 210, and the second cam portion 310, thereby improving the torque attenuation resistance of the hinge mechanism, and thus meeting the opening and closing experience requirements of the electronic device.

[0037] Optionally, a third cam portion 220 is protruded on the side of the first swing arm 200 away from the second swing arm 300, and a fourth cam portion 110 is protruded on the base 100. When the first swing arm 200 rotates relative to the base 100, the third cam portion 220 cooperates with the fourth cam portion 110, and a large friction force is generated between the two, which can further enhance the damping feeling of opening and closing the electronic device, that is, this arrangement can further ensure the hovering function and the opening and closing feel. Of course, the first swing arm 200 may not be provided with the third cam portion 220, and the base 100 may not be provided with the fourth cam portion 110, that is, at this time, the side of the first swing arm 200 away from the second swing arm 300 can be a first plane, and the first plane is in sliding contact with the second plane on the base 100.

[0038] Optionally, a fifth cam portion 320 is protruded on the side of the second swing arm 300 away from the first swing arm 200, and a sixth cam portion 120 is also protruded on the base 100. When the second swing arm 300 rotates relative to the base 100, the fifth cam portion 320 cooperates with the sixth cam portion 120, and a greater friction force is generated between the two, which can further enhance the damping feeling of opening and closing the electronic device, that is, this arrangement can further ensure the hovering function and the opening and closing feel. Of course, the second swing arm 300 may not be provided with the fifth cam portion 320, and the base 100 may not be provided with the sixth cam portion 120, that is, at this time, the side of the second swing arm 300 away from the first swing arm 200 can be a third plane, and the third plane is in sliding contact with the fourth plane on the base 100.

[0039] Optionally, the third cam portion 220 and the first cam portion 210 can be symmetrically arranged with respect to the second plane, and the second plane is perpendicular to the rotation axis of the first swing arm 200, that is, perpendicular to the axis of the synchronization shaft 910. In this case, the third cam portion 220 and the first cam portion 210 are mirror-arranged, and then the first cam 410 and the fourth cam portion 110 are mirror-arranged. This allows the first swing arm 200 and the fourth cam portion 110 to simultaneously squeeze the first cam 410 under the action of the fourth cam portion 110, and then simultaneously squeeze the elastic member 500. At this time, the reaction force generated by the elastic member 500 is larger, that is, the damping force generated by the elastic member 500 is larger, which can improve the damping feeling of opening and closing the electronic device. Of course, the third cam portion 220 and the first cam portion 210 may not be symmetrically arranged with respect to the second plane.

[0040] Optionally, the fifth cam portion 320 and the second cam portion 310 can be symmetrically arranged with respect to a third plane, and the third plane is perpendicular to the rotation axis of the second swing arm 300, that is, perpendicular to the axis of the synchronization shaft 910. In this case, the fifth cam portion 320 and the second cam portion 310 are mirror-arranged, and then the second cam 420 and the sixth cam portion 120 are mirror-arranged. This allows the second swing arm 300 and the sixth cam portion 120 to simultaneously squeeze the second cam 420 under the action of the sixth cam portion 120, and then simultaneously squeeze the elastic member 500. At this time, the reaction force generated by the elastic member 500 is larger, that is, the damping force generated by the elastic member 500 is larger, which can improve the damping feeling of opening and closing the electronic device. Of course, the fifth cam portion 320 and the second cam portion 310 may not be symmetrically arranged with respect to the third plane.

[0041] In addition, since the third cam portion 220 and the first cam portion 210 are mirrored, the fifth cam portion 320 and the second cam portion 310 are mirrored, and since the first cam portion 210 and the second cam portion 310 are mirrored, the third cam portion 220 and the fifth cam portion 320 are mirrored, and then the fourth cam portion 110 and the sixth cam portion 120 are mirrored. At this time, the squeezing force applied by the first swing arm 200 and the fourth cam portion 110 to the first cam 410, which is offset from the axis of the synchronous shaft 910, can be offset by the squeezing force applied by the second swing arm 300 and the sixth cam portion 120 to the second cam 420, which is offset from the axis of the synchronous shaft 910. The final force extends along the axis of the synchronous shaft 910 to further improve the flatness of the hinge mechanism.

[0042] Optionally, refer to Figures 3 to 6The hinge mechanism may further include a fuselage fixing bracket 600, and the first swing arm 200 and the second swing arm 300 are used to be connected to the first fuselage or the second fuselage through the fuselage fixing bracket 600. During the process of squeezing the elastic member 500 by the first cam 410 and the second cam 420, the first swing arm 200 and the second swing arm 300 can slide along the length direction of the hinge mechanism. In order to prevent the first swing arm 200 and the second swing arm 300 from driving the fuselage fixing bracket 600 to move synchronously, a third sliding groove with a larger size extending along the length direction of the hinge mechanism can be opened on the fuselage fixing bracket 600, and the first end of the first swing arm 200 and the first end of the second swing arm 300 are spaced apart in the third sliding groove, and the first end of the first swing arm 200 and the first end of the second swing arm 300 are both slidably matched with the third sliding groove along a direction parallel to the rotation axis of the first swing arm 200 or the second swing arm 300. Through this arrangement, it can be prevented that the fuselage fixing bracket 600 drives the first fuselage or the second fuselage to slide relative to the hinge mechanism along the length direction of the hinge mechanism.

[0043] In another embodiment, the fuselage fixing bracket 600 may be provided with a first slide groove and a second slide groove at intervals, that is, the dimensions of the first slide groove and the second slide groove in the length direction of the hinge mechanism may be designed to be smaller, and the first end of the first swing arm 200 and the first slide groove are slidably matched in a direction parallel to the rotation axis of the first swing arm 200, and the first end of the second swing arm 300 and the second slide groove are slidably matched in a direction parallel to the rotation axis of the second swing arm 300. In this embodiment, the first slide groove and the second slide groove can also achieve the effect achieved by the third slide groove, and since the dimensions of the first slide groove and the second slide groove in the length direction of the hinge mechanism are smaller, that is, this arrangement has a smaller impact on the structural strength of the fuselage fixing bracket 600, which can ensure the structural strength of the hinge mechanism.

[0044] At the same time, since the first swing arm 200 and the second swing arm 300 can be limited and corrected by the fuselage fixing bracket 600, and the elastic member 500 is located between the first cam 410 and the second cam 420, that is, the two ends of the elastic member 500 can be limited by the first swing arm 200 and the second swing arm 300 by the first cam 410 and the second cam 420, the flatness of the entire hinge mechanism is further improved, and even if the thickness of the hinge mechanism is thinned, that is, the thickness of the base 100 is thinned, it does not affect the flatness of the hinge mechanism, and further does not affect the flatness of the flexible screen of the electronic device. In addition, the present application can improve the flatness of the hinge mechanism without increasing the weight of the hinge mechanism, sacrificing the reliability of the hinge mechanism, and increasing the cost.

[0045] Optionally, in a direction perpendicular to the axis of the above-mentioned synchronization shaft 910, the fuselage fixing bracket 600 can slide relative to the first swing arm 200 and the second swing arm 300, that is, the fuselage fixing bracket 600 and the first swing arm 200 or the second swing arm 300 can form a crank-connecting rod mechanism, which can make the electronic device more flexibly folded or unfolded during the specific process of folding or unfolding the electronic device.

[0046] Optionally, refer to Figures 3 to 5 The hinge mechanism may further include a third swing arm 700, one end of the third swing arm 700 is rotatably connected to the base 100, the other end of the third swing arm 700 is rotatably connected to the fuselage fixing bracket 600, and the first swing arm 200 is located between the second swing arm 300 and the third swing arm 700. That is, at this time, the fuselage fixing bracket 600 is rotatably connected to the base 100 through the first swing arm 200, the second swing arm 300 and the third swing arm 700, which can improve the rotational stability of the fuselage fixing bracket 600 relative to the base 100, thereby improving the folding or unfolding stability of the electronic device.

[0047] At the same time, since the elastic member 500 is located between the first cam 410 and the second cam 420, that is, the elastic member 500 is located between the first swing arm 200 and the second swing arm 300, the distance between the first swing arm 200 and the second swing arm 300 is large, and thus the size of the fuselage fixing bracket 600 in the length direction of the hinge mechanism is large, and since the third swing arm 700 is also rotatably connected to the fuselage fixing bracket 600, and the third swing arm 700 is located on the side of the first swing arm 200 away from the second swing arm 300, the size of the fuselage fixing bracket 600 in the length direction of the hinge mechanism is further increased, and thus the larger fuselage fixing bracket 600 can further improve the structural strength of the hinge mechanism. Of course, the hinge mechanism may not include the third swing arm 700.

[0048] Optionally, the width of the first end of the first swing arm 200 may be equal to the width of the first end of the second swing arm 300, which may be the size of the first end of the first swing arm 200 and the size of the first end of the second swing arm 300 in the length direction of the hinge mechanism.

[0049] In another embodiment, since the first end of the first swing arm 200 is subjected to greater stress during the process of folding or unfolding the electronic device, in order to prevent the first end of the first swing arm 200 from being damaged, the width of the first end of the first swing arm 200 can be greater than the width of the first end of the second swing arm 300, that is, the width of the first end of the first swing arm 200 can be designed to be larger to enhance the structural strength of the first end of the first swing arm 200, thereby preventing the first end of the first swing arm 200 from being damaged.

[0050] Optionally, refer to Figure 1The number of the first swing arm 200 can be at least two, including a first sub-swing arm 230 and a second sub-swing arm 240, one end of the first sub-swing arm 230 is connected to the first body, and one end of the second sub-swing arm 240 is connected to the second body. The hinge mechanism can also include a first gear set 800, the first gear set 800 is rotatably arranged on the base 100, and the other end of the first sub-swing arm 230 and the other end of the second sub-swing arm 240 are both engaged with the first gear set 800. When the first body drives the first sub-swing arm 230 to rotate, the first sub-swing arm 230 can synchronously drive the second sub-swing arm 240 and the second body to rotate through the first gear set 800, that is, the first gear set 800 can ensure the rotation synchronization of the first body and the second body.

[0051] The number of the second swing arm 300 may also be at least two, including a third sub-swing arm 330 and a fourth sub-swing arm 340, one end of the third sub-swing arm 330 is connected to the first body, and one end of the fourth sub-swing arm 340 is connected to the second body. The hinge mechanism may also include a second gear set, which is rotatably arranged on the base 100, and the other end of the third sub-swing arm 330 and the other end of the fourth sub-swing arm 340 are both meshed with the second gear set. When the first body drives the third sub-swing arm 330 to rotate, the third sub-swing arm 330 can synchronously drive the fourth sub-swing arm 340 and the second body to rotate through the second gear set, that is, the second gear set can also ensure the rotation synchronization of the first body and the second body. It can be seen that in this embodiment, the rotation synchronization of the first body and the second body can be further ensured by the first gear set 800 and the second gear set. Of course, the hinge mechanism may also not include the first gear set 800 and the second gear set.

[0052] Optionally, the number of the fuselage fixing brackets 600 is also at least two, including a first fuselage fixing bracket and a second fuselage fixing bracket, the first sub-swing arm 230 and the third sub-swing arm 330 are used to connect to the first fuselage through the first fuselage fixing bracket, and the second sub-swing arm 240 and the fourth sub-swing arm 340 are used to connect to the second fuselage through the second fuselage fixing bracket. The embodiment of the present application can further improve the structural strength of the hinge mechanism by adopting multiple fuselage fixing brackets 600.

[0053] Optionally, the hinge mechanism may further include a door panel 930, the number of door panels 930 is at least two, including a first door panel and a second door panel, the first door panel and the second door panel are spaced apart in the width direction of the hinge mechanism, and the first door panel is rotatably connected to the above-mentioned first fuselage fixing bracket, and the second door panel is rotatably connected to the above-mentioned second fuselage fixing bracket, and the first door panel and the second door panel can both be used to support the flexible screen of the electronic device.

[0054] Optionally, the hinge mechanism may further include a damping spring 920, which is spaced apart from the elastic member 500 in the width direction of the hinge mechanism, and is disposed between the first cam 410 and the second cam 420. The first cam 410 and the second cam 420 may simultaneously squeeze the elastic member 500 and the damping spring 920, that is, the reverse force jointly generated by the elastic member 500 and the damping spring 920 may enable the electronic device to have a hovering function while further improving the damping feeling of opening and closing the electronic device. Of course, the hinge mechanism may also not include the damping spring 920.

[0055] Optionally, the present application further discloses an electronic device, and the disclosed electronic device includes the hinge mechanism mentioned above, a first body and a second body, and the first body and the second body are rotatably connected through the hinge mechanism.

[0056] Optionally, the number of the above-mentioned hinge mechanisms can be at least two, and the hinge mechanisms are arranged at intervals and connected in the length direction of the hinge mechanisms. Part of the flexible circuit board of the electronic device can be located in the space between the hinge mechanisms. Since the length of each hinge mechanism in the present application is relatively small, this setting method will not affect the setting position and width of the flexible circuit board.

[0057] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A hinge mechanism for rotatably connecting a first body and a second body of an electronic device, characterized in that: The hinge mechanism includes a base, a first swing arm, a second swing arm, a first cam, a second cam and an elastic member. The first swing arm and the second swing arm are arranged at intervals on the base, and one end of the first swing arm and one end of the second swing arm are both used to be connected to the first fuselage or the second fuselage, the other end of the first swing arm and the other end of the second swing arm are both rotatably connected to the base, and the first swing arm is provided with a first cam portion protruding from one side of the first swing arm toward the second swing arm, and the second swing arm is provided with a second cam portion protruding from one side of the second swing arm toward the first swing arm; The first cam, the second cam and the elastic member can all be movably disposed on the base, and the elastic member is disposed between the first cam and the second cam, the first cam portion cooperates with the first cam, and the second cam portion cooperates with the second cam.

2. The hinge mechanism according to claim 1, characterized in that: The first cam portion and the second cam portion are symmetrically arranged with respect to a first plane, and the first plane is perpendicular to a rotation axis of the first swing arm or the second swing arm.

3. The hinge mechanism according to claim 1, characterized in that: A third cam portion is protruded from a side of the first swing arm away from the second swing arm, a fourth cam portion is protruded from the base, and the third cam portion cooperates with the fourth cam portion.

4. The hinge mechanism according to claim 3, characterized in that: A fifth cam portion is protruded from a side of the second swing arm away from the first swing arm, and a sixth cam portion is also protruded from the base, and the fifth cam portion cooperates with the sixth cam portion.

5. The hinge mechanism according to claim 4, characterized in that: The third cam portion and the first cam portion are symmetrically arranged with respect to a second plane, and the second plane is perpendicular to the rotation axis of the first swing arm; and / or, The fifth cam portion and the second cam portion are symmetrically arranged about a third plane, and the third plane is perpendicular to the rotation axis of the second swing arm.

6. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism also includes a fuselage fixing bracket, which is used to be connected to the first fuselage or the second fuselage, and the fuselage fixing bracket is provided with a first slide groove and a second slide groove, the first end of the first swing arm is slidingly matched with the first slide groove along a direction parallel to the rotation axis of the first swing arm, and the first end of the second swing arm is slidingly matched with the second slide groove along a direction parallel to the rotation axis of the second swing arm.

7. The hinge mechanism according to claim 6, characterized in that: The hinge mechanism also includes a third swing arm, one end of which is rotatably connected to the base, and the other end of which is rotatably connected to the fuselage fixing bracket, and the first swing arm is located between the second swing arm and the third swing arm.

8. The hinge mechanism according to claim 6, characterized in that: The width of the first end of the first swing arm is greater than the width of the first end of the second swing arm.

9. The hinge mechanism according to claim 1, characterized in that: The number of the first swing arms is at least two, including a first sub-swing arm and a second sub-swing arm, one end of the first sub-swing arm is connected to the first body, and one end of the second sub-swing arm is connected to the second body, the hinge mechanism also includes a first gear set, the first gear set is rotatably disposed on the base, and the other end of the first sub-swing arm and the other end of the second sub-swing arm are both meshed with the first gear set; The number of the second swing arms is at least two, including a third sub-swing arm and a fourth sub-swing arm, one end of the third sub-swing arm is connected to the first body, and one end of the fourth sub-swing arm is connected to the second body, and the hinge mechanism also includes a second gear set, which is rotatably disposed on the base, and the other end of the third sub-swing arm and the other end of the fourth sub-swing arm are both engaged with the second gear set.

10. An electronic device, characterized in that: It comprises the hinge mechanism according to any one of claims 1 to 9, the first body and the second body, wherein the first body and the second body are rotationally connected via the hinge mechanism.

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