Hinge mechanism and electronic device

Abstract

The invention discloses a hinge mechanism and electronic equipment, and belongs to the field of electronic equipment. The hinge mechanism comprises a base, a first swing arm and a first support, the first swing arm is arranged on one side of the base, and the first swing arm comprises a first rotating part and a second rotating part which are fixedly connected; one of the base and the first rotating part is provided with a first arc-shaped sliding groove, the other one of the base and the first rotating part is provided with a first arc-shaped sliding block, and the first arc-shaped sliding block is rotationally connected with the first arc-shaped sliding groove; one of the first support and the second rotating part is provided with a second arc-shaped sliding groove, the other one of the first support and the second rotating part is provided with a second arc-shaped sliding block, the second arc-shaped sliding block is rotationally connected with the second arc-shaped sliding groove, and the rotatable angle of the first swing arm relative to the base is larger than that of the first support relative to the base. And the rotating axial directions of the first arc-shaped sliding block and the second arc-shaped sliding block are parallel to each other.

Description

Technical Field

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

[0002] Influenced by user needs, foldable electronic devices are becoming more and more popular among consumers due to their large display area and strong portability. Foldable electronic devices usually use a hinge mechanism to form a rotational connection between two parts of the shell, and the hinge mechanism support and the shell together provide support for the display screen of the electronic device.

[0003] However, as electronic devices gradually become thinner and lighter, and the installation positions and installation spaces of other devices in the electronic devices cannot be coordinated, in order to prevent the battery capacity from being reduced accordingly, it is usually necessary to reduce the width of the hinge mechanism to ensure that the battery installation space is still relatively large, thereby making the standby time of the electronic device relatively long and improving the user experience. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a hinge mechanism and an electronic device, wherein the width of the hinge mechanism is relatively small to ensure that the battery of the electronic device still has a relatively large installation space when the electronic device is overall thinned, so that the standby time of the electronic device is still relatively long, thereby improving the user experience.

[0005] In a first aspect, an embodiment of the present application provides a hinge mechanism, which includes a base, a first swing arm and a first bracket, wherein: The first swing arm is disposed on one side of the base, and the first swing arm includes a first rotating part and a second rotating part that are fixedly connected; One of the base and the first rotating part is provided with a first arc-shaped slide groove, and the other is provided with a first arc-shaped slider, and the first arc-shaped slider is rotatably connected to the first arc-shaped slide groove; one of the first bracket and the second rotating part is provided with a second arc-shaped slide groove, and the other is provided with a second arc-shaped slider, and the second arc-shaped slider is rotatably connected to the second arc-shaped slide groove, the rotatable angle of the first swing arm relative to the base is greater than the rotatable angle of the first bracket relative to the base, and the rotation axes of the first arc-shaped slider and the second arc-shaped slider are parallel to each other.

[0006] In a second aspect, an embodiment of the present application provides an electronic device, which includes a shell, a display screen and the above-mentioned hinge mechanism, the number of the shells is multiple, and two adjacent shells are rotatably connected by the hinge mechanism, and the display screen is installed on the shell.

[0007] The embodiment of the present application discloses a hinge mechanism, wherein a first swing arm is arranged on one side of a base, and the first swing arm is used to connect the base and the first bracket of the hinge mechanism so that the first bracket can rotate relative to the base, wherein the first swing arm includes a first rotating part and a second rotating part which are fixedly connected, one of the base and the first rotating part is provided with a first arc-shaped slide groove, and the other is provided with a first arc-shaped slider, and the first swing arm can form a rotational matching relationship with the base by making the first arc-shaped slider rotatably connected to the first arc-shaped slide groove, and the first swing arm can form a rotational matching relationship with the base, and at the same time, one of the first bracket and the second rotating part is provided with a second arc-shaped slide groove, and the other is provided with a second arc-shaped slider, and the second arc-shaped slide groove is rotatably matched with the second arc-shaped slider, so that the first bracket and the first swing arm also have the ability to rotate relative to each other, and then, when the rotation angle of the first swing arm relative to the base is greater than the rotation angle of the first bracket relative to the base, by making the rotation axes of the first arc-shaped slide groove and the second arc-shaped slider parallel to each other, the rotation axis between the first swing arm and the base is parallel to the rotation axis between the first swing arm and the first bracket, so that the hinge mechanism can provide a relatively larger accommodating space for the folded part of the display screen.

[0008] Compared with the current hinge mechanism that uses a pin-hole structure to connect with each other, the space occupied by the part of the first swing arm used to connect with the first bracket in the width direction of the hinge mechanism is at least the outer diameter of the hole, that is, the diameter size. In the hinge mechanism disclosed in the embodiment of the present application, since the size occupied by the second arc-shaped slide groove and the second arc-shaped slider in the width direction of the hinge mechanism is at most equal to the radius of the second arc-shaped slide groove, and can usually be smaller than the radius of the second arc-shaped slide groove, the space occupied by the first swing arm in the present application in the width direction of the hinge mechanism is relatively small, thereby reducing the width size of the entire hinge mechanism, thereby increasing the installation space of other devices such as batteries in the electronic device using the hinge mechanism, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is an exploded schematic diagram of the hinge mechanism disclosed in the embodiment of the present application; Figure 2 is a schematic diagram of the assembly between the first bracket and the first swing arm in the hinge mechanism disclosed in the embodiment of the present application; Figure 3 is a structural schematic diagram of a third swing arm in the hinge mechanism disclosed in an embodiment of the present application; Figure 4 is a schematic diagram of the cooperation between the first sliding portion of the third swing arm and the first bracket in the hinge mechanism disclosed in the embodiment of the present application; Figure 5 is a schematic diagram of the cooperation between the second sliding portion of the third swing arm and the first bracket in the hinge mechanism disclosed in the embodiment of the present application; Figure 6It is a schematic diagram of an assembly of the third swing arm and the first bracket in the hinge mechanism disclosed in the embodiment of the present application; Figure 7 It is another schematic diagram of assembling the third swing arm and the first bracket in the hinge mechanism disclosed in the embodiment of the present application; Figure 8 yes Figure 7 A schematic cross-sectional view of the structure shown; Fig. 9 It is a schematic diagram of the structure of an electronic device disclosed in an embodiment of the present application.

[0010] The accompanying drawings are: 1-hinge mechanism, 2-housing, 3-display screen, 31-first display area, 32-second display area, 33-third display area, 100-base, 110-first arc chute, 120-third arc chute, 201-first swing arm, 202-second swing arm, 210-first rotating part, 211-first arc-shaped sliding block, 212-avoidance gap, 220-second rotating part, 221-second arc-shaped sliding groove, 301-third swing arm, 302-fourth swing arm, 303-gear, 310-fifth rotating part, 320-first sliding part, 321-first limiting surface, 330-second sliding part, 331-second limiting surface, 401 - first bracket, 402 - second bracket, 410 - bracket body, 411 - second arc-shaped sliding block, 412 - first limiting groove wall, 420 - limiting portion, 421 - second limiting groove wall. DETAILED DESCRIPTION

[0011] 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.

[0012] 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.

[0013] An embodiment of the present application discloses a hinge mechanism, which can be applied to an electronic device, and the hinge mechanism is used to connect two adjacent shells in the electronic device so that the two shells can rotate relative to each other, so that the electronic device has the ability to be folded.

[0014] Accordingly, the embodiment of the present application also discloses an electronic device, which is specifically a foldable electronic device, that is, the electronic device has a folded state and an unfolded state, and can switch between the folded state and the unfolded state. Fig. 9 As shown, the electronic device includes a housing 2, a display screen 3 and the above-mentioned hinge mechanism, wherein any two adjacent housings 2 can form a rotational connection relationship through the hinge mechanism 1, and the display screen 3 can be installed on the hinge mechanism 1 and the housing 2 to form a foldable electronic device with folding ability. In addition, the display screen 3 can be a flexible screen as a whole, or the display screen 3 can include a first display area 31, a second display area 32 and a third display area 33, wherein the third display area 33 is connected between the first display area 31 and the second display area 32, and the first display area 31 and the second display area 32 are respectively supported on two housings 2, both of which can be flexible structures or rigid structures, and the third display area 33 is opposite to the hinge mechanism 1, and the third display area 33 is a flexible structure.

[0015] like Figure 1-Figure 8 As shown, the hinge mechanism disclosed in the embodiment of the present application includes a base 100, a first swing arm 201 and a first bracket 401, wherein the first swing arm 201 is arranged on one side of the base 100, and the first swing arm 201 is used to connect the base 100 and the first bracket 401, so that the first bracket 401 can form a rotational connection relationship with the base 100 by using the first swing arm 201. In more detail, when the hinge mechanism disclosed in the embodiment of the present application is applied to an electronic device, the housing of the electronic device can be directly or indirectly connected to the above-mentioned first bracket 401 in the hinge mechanism. Usually, a connecting member such as a screw can be used to fix the first bracket 401 on the housing, and then in the process of the housing rotating relative to the base 100, the housing can drive the first swing arm 201 to rotate relative to the base 100 through the first bracket 401, so that the housing has the ability to reciprocate relative to the base 100 within a corresponding angle range.

[0016] As mentioned above, in the hinge mechanism disclosed in the embodiment of the present application, the first swing arm 201 is arranged on one side of the base 100, and further, in order to ensure that the hinge mechanism can provide a connection function for two adjacent shells in the electronic device, in the case where the first swing arm 201 is provided on one side of the base 100, the second swing arm 202 is also provided on the other side of the base 100, and the second swing arm 202 is correspondingly provided with a second bracket 402, wherein the first end of the second swing arm 202 is rotationally connected to the base 100, and the second end of the second swing arm 202 is rotationally connected to the second bracket 402, so that the two adjacent shells can form a rotational matching relationship through the hinge mechanism. In addition, in order to improve the ease of use of the hinge mechanism, the hinge mechanism generally also includes components such as a synchronization component and a damping component, which are not described in detail here for the sake of brevity of the text.

[0017] In current foldable electronic devices, the hinge generally includes the first swing arm 201 and the second swing arm 202. Accordingly, the first swing arm 201 and the second swing arm 202 are respectively arranged on opposite sides of the base 100, so that two adjacent shells can form a rotational cooperation relationship with the shells through the first swing arm 201 and the second swing arm 202. Of course, the first swing arm 201 and the second swing arm 202 are also correspondingly connected to the two shells through the first bracket 401 and the second bracket 402. However, in the current hinge mechanism, the first swing arm 201 and the first bracket 401, as well as the second swing arm 202 and the second bracket 402 are connected to each other through a pin-like structure. Specifically, the first swing arm 201 and the second swing arm 202 are each usually provided with a sleeve-like structure at one end away from the base 100, and the sleeve is provided with an axial hole. In the process of connecting the first swing arm 201 and the first bracket 401, the first swing arm 201 and the first bracket 401 can be connected by a pin shaft passing through the axial hole to the first bracket 401, so that the first swing arm 201 and the first bracket 401 form a rotational matching relationship. Correspondingly, the second swing arm 202 and the second bracket 402 can also form a rotational matching relationship through another pin shaft.

[0018] In order to reduce the width of the hinge mechanism so that the installation space occupied by the hinge mechanism in the electronic device is relatively smaller, and to ensure that other devices such as batteries can still have a larger installation space, in this application, if Figure 2As shown, in the hinge mechanism, the first swing arm 201 may include a first rotating part 210 and a second rotating part 220. Of course, in order to ensure that the first swing arm 201 can still be rotatably connected to the base 100 and the first bracket 401, the first rotating part 210 and the second rotating part 220 are fixedly connected. Specifically, welding or other methods may be used to form a fixed connection relationship between the two, or the first rotating part 210 and the second rotating part 220 may be directly formed to include and be fixedly connected by methods such as integral molding. It should be noted that the direction in which the width of the hinge mechanism is located is perpendicular to the rotation axis of the hinge mechanism and is perpendicular to the thickness direction of the electronic device in the unfolded state.

[0019] Correspondingly, in order to ensure that the first swing arm 201 can still provide relative rotation for the base 100 and the first bracket 401, in the hinge mechanism disclosed in the embodiment of the present application, one of the base 100 and the first rotating part 210 is provided with a first arc-shaped slide groove 110, and the other is provided with a first arc-shaped slider 211, and the first arc-shaped slider 211 is rotatably connected to the first arc-shaped slide groove 110; at the same time, one of the first bracket 401 and the second rotating part 220 is provided with a second arc-shaped slide groove 221, and the other is provided with a second arc-shaped slider 411, and the second arc-shaped slider 411 is rotatably connected to the second arc-shaped slide groove 221, and the rotation axes of the first arc-shaped slider 211 and the second arc-shaped slider 411 are parallel to each other.

[0020] When the first swing arm 201 adopts the above structure, the first swing arm 201 can form a rotational matching relationship with the base 100 by using the first arc-shaped slider 211 and the first arc-shaped slot 110 that rotate together, and correspondingly, the first swing arm 201 can also form a rotational matching relationship with the first bracket 401 by using the second arc-shaped slider 411 and the second arc-shaped slot 221 that rotate together. In addition, the rotation angle of the first swing arm 201 relative to the base 100 is greater than the rotation angle of the first bracket 401 relative to the base 100.

[0021] Specifically, the first arc-shaped slide groove 110 and the second arc-shaped slide groove 221 can be formed on the first swing arm 201, or the first arc-shaped slide groove 110 can be formed on the base 100, and the second arc-shaped slide groove 221 can be formed on the first bracket 401, which is not limited in this article. In order to improve the structural stability of the first swing arm 201, the first arc-shaped slide groove 110 can be formed on the base 100, and the first arc-shaped slider 211 can be formed on the first rotating part 210. As for the second arc-shaped slide groove 221, considering its relatively small size, it can be formed on the first swing arm 201 or on the first bracket 401. In a specific embodiment of the present application, the second arc-shaped slide groove 221 is formed on the first swing arm 201, and correspondingly, the second arc-shaped slide groove 221 is formed on the first bracket 401.

[0022] As described above, the first arc-shaped slider 211, the second arc-shaped slider 411, the first arc-shaped slot 110 and the second arc-shaped slot 221 all extend in the direction around the rotation axis of the hinge mechanism, and the angles spanned by the aforementioned ones in the direction around the rotation axis are all less than 180°. In more detail, in the inward folding electronic device, in order to expand the accommodation space of the folded part of the display screen, the rotation angle of the first swing arm 201 relative to the base 100 can usually be slightly greater than 90°, such as 100°. In this case, the rotation axis between the first swing arm 201 and the base 100 connected to each other by the first arc-shaped slot 110 and the first arc-shaped slider 211 can be located outside the base 100, and specifically located on the side of the base 100 facing the display screen. In this case, in order to ensure that the matching stability between the first arc-shaped slider 211 and the first arc-shaped slot 110 is relatively high, the angle spanned by the first arc-shaped slider 211 in the direction around the rotation axis can usually be about 180°, and can be slightly less than 180°.

[0023] Based on the above situation, since the first bracket 401 is fixedly connected to the shell of the electronic device, usually, the maximum rotation angle of the first bracket 401 and the base 100 is usually 90°, and then in the process of the first bracket 401 driving the first swing arm 201 to rotate relative to the base 100, relative rotation will also occur between the first swing arm 201 and the first bracket 401, so as to utilize the rotation process between the first swing arm 201 and the first bracket 401, so that the first bracket 401 can rotate 90° relative to the base 100, and the first swing arm 201 can rotate relative to the base 100 by an angle greater than 90°, such as 100°. To this end, in the hinge mechanism, the relative rotation angle between the first bracket 401 and the first swing arm 201 is relatively small, usually around 10°. To this end, the angle spanned by the second arc-shaped slider 411 and the second arc-shaped slot 221 in the above-mentioned rotation direction can also be relatively small, usually 20°, which can meet the requirements for assembly stability between the first swing arm 201 and the first bracket 401. Of course, in order to improve the matching reliability between the first swing arm 201 and the first bracket 401, the angle spanned by the second arc-shaped slider 411 and the second arc-shaped slot 221 in the direction around the rotation axis can also be made greater than 20°.

[0024] However, in any case, the angle spanned by the second arc-shaped slot 221 and the second arc-shaped slider 411 in the rotation direction is usually less than 90°, which makes the space occupied by the second arc-shaped slot 221 and the second arc-shaped slider 411 in the width direction of the hinge mechanism at most equal to the radius of the second arc-shaped slot 221. As mentioned above, in the current hinge mechanism, since the first swing arm 201 and the first bracket 401 are connected to each other through a pin hole structure, the space occupied by the sleeve used by the first swing arm 201 to provide a connection in the width direction of the hinge mechanism is at least equal to the diameter of the sleeve. Therefore, compared with the current hinge mechanism, the dimension of the hinge mechanism disclosed in the embodiment of the present application in the width direction is at least reduced by the radius of the sleeve, and the overall width of the hinge mechanism disclosed in the embodiment of the present application is relatively small. Even if the electronic device is thinned as a whole, a relatively large installation space can be provided for devices such as batteries.

[0025] The embodiment of the present application discloses a hinge mechanism, wherein a first swing arm 201 is arranged on one side of a base 100, and the first swing arm 201 is used to connect the base 100 and the first bracket 401 of the hinge mechanism so that the first bracket 401 can rotate relative to the base 100, wherein the first swing arm 201 includes a first rotating portion 210 and a second rotating portion 220 that are fixedly connected, one of the base 100 and the first rotating portion 210 is provided with a first arc-shaped sliding groove 110, and the other is provided with a first arc-shaped sliding block 211, and the first arc-shaped sliding block 211 is rotatably connected to the first arc-shaped sliding groove 110, so that the first swing arm 201 can form a rotational matching relationship with the base 100, and at the same time, one of the first bracket 401 and the second rotating portion 220 One is provided with a second arc-shaped slot 221, and the other is provided with a second arc-shaped slider 411. By making the second arc-shaped slot 221 and the second arc-shaped slider 411 rotate and cooperate, the first bracket 401 and the first swing arm 201 also have the ability to rotate relative to each other. Furthermore, when the rotation angle of the first swing arm 201 relative to the base 100 is greater than the rotation angle of the first bracket 401 relative to the base 100, by making the rotation axes of the first arc-shaped slot 110 and the second arc-shaped slider 411 parallel to each other, the rotation axis between the first swing arm 201 and the base 100 is parallel to the rotation axis between the first swing arm 201 and the first bracket 401, so that the hinge mechanism can provide a relatively larger accommodating space for the folded part of the display screen.

[0026] Compared with the current hinge mechanism that uses a pin-hole structure to connect with each other, the space occupied by the part of the first swing arm 201 used to connect with the first bracket 401 in the width direction of the hinge mechanism is at least the outer diameter of the hole, that is, the diameter size. In the hinge mechanism disclosed in the embodiment of the present application, since the size occupied by the second arc-shaped slide groove 221 and the second arc-shaped slider 411 in the width direction of the hinge mechanism is at most equal to the radius of the second arc-shaped slide groove 221, and can usually be smaller than the radius of the second arc-shaped slide groove 221, the space occupied by the first swing arm 201 in the present application in the width direction of the hinge mechanism is relatively small, thereby reducing the width size of the entire hinge mechanism, thereby increasing the installation space of other devices such as batteries in the electronic device using the hinge mechanism, thereby improving the user experience.

[0027] As described above, the hinge mechanism includes a second swing arm 202 and a second bracket 402. Optionally, the second swing arm 202 is rotatably connected to the second bracket 402 using a pin-hole type connection structure. In order to further reduce the width of the entire hinge mechanism, in another embodiment of the present application, the second swing arm 202 can also be designed with reference to the structure of the first swing arm 201.

[0028] In detail, the second swing arm 202 includes a third rotating part and a fourth rotating part that are fixedly connected. One of the base 100 and the third rotating part is provided with a third arc-shaped slide groove 120, and the other is provided with a third arc-shaped slider. The third arc-shaped slider and the third arc-shaped slide groove 120 are rotatably connected; one of the second bracket 402 and the fourth rotating part is provided with a fourth arc-shaped slide groove, and the other is provided with a fourth arc-shaped slider. The fourth arc-shaped slider is rotatably connected to the fourth arc-shaped slide groove. The rotation angle of the second swing arm 202 relative to the base 100 is greater than the rotation angle of the second bracket 402 relative to the base 100, and the rotation axes of the third arc-shaped slider and the fourth arc-shaped slider are parallel to each other.

[0029] Of course, in the design and processing of the hinge mechanism, the structures of the first swing arm 201 and the second swing arm 202 can be arranged symmetrically as a whole. Correspondingly, the structures of the first bracket 401 and the second bracket 402 can also be arranged symmetrically as a whole, so that the second swing arm 202 is designed and processed with reference to the structure of the first swing arm 201, and the second bracket 402 is designed and processed with reference to the structure of the first bracket 401. Considering the simplicity of the text, it will not be repeated here.

[0030] As described above, the first arc-shaped slide groove 110 can be formed on the base 100, and on this basis, the third arc-shaped slider can be formed on the base 100. In another embodiment of the present application, the base 100 is provided with the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120, and in the process of forming the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120, the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120 can be staggered in the rotation axis of the hinge mechanism. That is, there is a difference in the setting positions of the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120 on the base 100 along the axial direction of the hinge mechanism. For example, in the axial direction of rotation of the hinge mechanism, the first arc-shaped slide groove 110 can be located between the midpoint of the base 100 and the first end of the base 100, and the third arc-shaped slide groove 120 can be located between the midpoint of the base 100 and the second end of the base 100, which makes the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120 staggered as a whole.

[0031] When the above technical solution is adopted, the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120 are capable of sharing part of the width space of the base 100, so that in a plane perpendicular to the rotation axis of the hinge mechanism, the projection of the first arc-shaped slide groove 110 and the projection of the third arc-shaped slide groove 120 at least partially overlap, which can reduce the width dimension of the base 100 on the hinge mechanism, thereby further reducing the width dimension of the entire hinge mechanism.

[0032] As described above, in the process of forming the first arcuate chute 110 and the third arcuate chute 120, the two can be staggered as a whole in the rotation axis direction. In another embodiment of the present application, the first arcuate chute 110 and the third arcuate chute 120 can be partially staggered. For example, a portion of each of the first arcuate chute 110 and the third arcuate chute 120 can be flush with the rotation axis direction, and another portion of the first arcuate chute 110 is located as a whole on the side of the third arcuate chute 120 close to the first end of the base 100, while another portion of the third arcuate chute 120 is located as a whole on the side of the first arcuate chute 110 away from the first end of the base 100, so that the two can be partially staggered in the rotation axis direction.

[0033] In the embodiment of the present application, in order to ensure that the first swing arm 201 and the second swing arm 202 can still be normally rotatably connected to the base 100, for this purpose, only the projections of the first arc-shaped slide groove 110 and the third arc-shaped slide groove 120 in the plane perpendicular to the rotation axis can overlap. At the same time, in order to make the angle spanned by the first arc-shaped slider 211 and the third arc-shaped slider in the direction around the rotation axis relatively large, so as to maximize the matching reliability between the first swing arm 201 and the second swing arm 202 and the base 100, in the embodiment of the present application, the first rotating part 210 and the third rotating part are both provided with an avoidance notch 212, and when the hinge mechanism is in the unfolded state, a part of the first rotating part 210 can extend into the avoidance notch 212 of the third rotating part, and a part of the third rotating part can extend into the avoidance notch 212 of the first rotating part 210, so that the first rotating part 210 and the third rotating part can form a matching form similar to the interlocking and staggered matching in structures such as zippers.

[0034] At the same time, by designing the parameters such as the size of the avoidance notch 212 of the first rotating part 210 and the third rotating part, the first swing arm 201 and the second swing arm 202 can form a limited matching relationship in the rotation axis in the hinge mechanism in the unfolded state, thereby further improving the integrity of the hinge mechanism. In addition, in the embodiment of the present application, the symmetry of the first swing arm 201 and the second swing arm 202 in the width direction of the hinge mechanism is relatively better, so that in the process of folding and unfolding the electronic device, the force symmetry of the hinge mechanism is also relatively high, thereby improving the stability of the hinge mechanism.

[0035] As described above, the hinge mechanism may also include other structures such as a synchronization component. In the embodiment of the present application, the hinge mechanism may include a third swing arm 301, a fourth swing arm 302 and the second bracket 402. Of course, the second swing arm 202 may be disposed between the second bracket 402 and the base 100. The third swing arm 301 and the fourth swing arm 302 are disposed on opposite sides of the base 100, respectively, and by using synchronization devices such as a gear set, the third swing arm 301 and the fourth swing arm 302 may be able to rotate synchronously relative to the base 100 toward or away from each other. Specifically, the gear set may include two gears 303 meshing with each other, and by providing the third swing arm 301 and the fourth swing arm 302 with gear surfaces respectively, the third swing arm 301 can mesh with one gear 303, and the fourth swing arm 302 can mesh with another gear 303, so that when the third swing arm 301 rotates in a clockwise direction relative to the base 100, the two gears 303 can be driven to drive the fourth swing arm 302 to rotate in a counterclockwise direction relative to the base 100.

[0036] At the same time, the third swing arm 301 is also slidably connected to the first bracket 401, and the fourth swing arm 302 is also slidably connected to the second bracket 402. Therefore, in the process of the third swing arm 301 and the fourth swing arm 302 synchronously rotating toward or away from each other, the two shells respectively connected to the opposite sides of the hinge mechanism can have the ability to rotate toward or away from each other synchronously, and ensure that the rotation angle of each shell relative to the base 100 is equal, which can improve the deformation symmetry of the display screen and thus improve the service life of the display screen.

[0037] As described above, the third swing arm 301 and the fourth swing arm 302 are slidably connected to the first bracket 401 and the second bracket 402, respectively, and in the above embodiment, the first swing arm 201 can be rotatably connected to the first bracket 401 through the second arc-shaped slide groove 221 and the second arc-shaped slider 411, and the second swing arm 202 can be rotatably connected to the second bracket 402 through the fourth arc-shaped slide groove and the fourth arc-shaped slider, so as to achieve the purpose of reducing the width dimension of the hinge mechanism. When the width dimension of the hinge mechanism is reduced, it is bound to have an adverse effect on the overlapping dimension of the third swing arm 301 and the first bracket 401, and the fourth swing arm 302 and the second bracket 402 in the width direction, resulting in a reduction in the overlapping dimension of the corresponding two, which will affect the matching stability between the third swing arm 301 and the first bracket 401, and between the fourth swing arm 302 and the second bracket 402.

[0038] To this end, in response to the above-mentioned technical problem, in another embodiment of the present application, the sliding matching structure of the third swing arm 301 and the first bracket 401 can be improved to ensure that after the width of the hinge mechanism is reduced, the overlapping dimension of the third swing arm 301 and the first bracket 401 in the width direction is still relatively large, thereby making the matching stability between the third swing arm 301 and the first bracket 401 still relatively high.

[0039] In detail, the first bracket 401 is provided with a first linear slide groove, and the third swing arm 301 can be slidably installed in the first linear slide groove, so that the third swing arm 301 can slide in the first linear slide groove during the switching of the hinge mechanism between the folded state and the unfolded state. In order to ensure that the cooperation stability between the third swing arm 301 and the first linear slide groove is relatively high, it is necessary to limit the third swing arm 301 and the first linear slide groove in a direction perpendicular to the sliding direction and the above-mentioned rotation axis. For the convenience of description, the above-mentioned direction perpendicular to the sliding direction of the third swing arm 301 and the direction perpendicular to the rotation axis can be defined as the limiting direction, and the first linear slide groove and the third swing arm 301 are limited in the above-mentioned limiting direction.

[0040] The surfaces of the first linear slide that are mutually limited with the third swing arm 301 in the limiting direction are respectively the first limiting groove wall 412 and the second limiting groove wall 421 of the first linear slide. In layman's terms, taking the cross section of the first linear slide as a rectangle as an example, the first limiting groove wall 412 and the second limiting groove wall 421 can be a pair of opposite long sides in the rectangular structure.

[0041] In the embodiment of the present application, in order to ensure that the third swing arm 301 and the first limiting groove wall 412 and the second limiting groove wall 421 have a relatively large overlapping area in the aforementioned width direction, so that the limiting areas between the third swing arm 301 and the first limiting groove wall 412 and the second limiting groove wall 421 are relatively large, different from the groove walls that are arranged opposite to each other in the traditional groove structure (such as a pair of long sides of the above-mentioned rectangular structure), in the embodiment of the present application, the first limiting groove wall 412 and the second limiting groove wall 421 are not arranged opposite to each other in the aforementioned limiting direction, but the first limiting groove wall 412 and the second limiting groove wall 421 are staggered in the rotation axis of the hinge mechanism, that is, in the embodiment of the present application, in the surface of the first linear slide groove used to provide a limiting effect for the third swing arm 301 in the limiting direction, the first limiting groove wall 412 and the second limiting groove wall 421 are distributed along the rotation axis of the hinge mechanism.

[0042] Furthermore, in order to distinguish the limiting directions of the first limiting groove wall 412 and the second limiting groove wall 421, in the embodiment of the present application, in the limiting direction, the first limiting groove wall 412 is located on the side of the first linear slide toward the screen support side of the first bracket 401, and the second limiting groove wall 421 is located on the side of the first linear slide away from the screen support side of the first bracket 401. In this case, after a portion of the third swing arm 301 extends into the first linear slide, the first limiting groove wall 412 can cooperate with the corresponding surface of the third swing arm 301 to provide a function of limiting the movement of the third swing arm 301 in the direction close to the screen support side of the first bracket 401, and accordingly, the second limiting groove wall 421 can cooperate with another corresponding surface of the third swing arm 301 to achieve the purpose of limiting the movement of the third swing arm 301 in the direction away from the screen support side of the first bracket 401.

[0043] Based on the first bracket 401 of the above structure, Figure 3As shown, the third swing arm 301 includes a fifth rotating part 310, a first sliding part 320 and a second sliding part 330, wherein the third swing arm 301 can be rotatably connected to the base 100 through its fifth rotating part 310, and the first sliding part 320 and the second sliding part 330 are both used to slide with the first linear slide groove of the third swing arm 301. To this end, one end of each of the first sliding part 320 and the second sliding part 330 is fixedly connected to the fifth rotating part 310, so that the first bracket 401 can form a rotationally matched assembly relationship with the base 100 through the third swing arm 301. At the same time, as mentioned above, since the first limiting groove wall 412 and the second limiting groove wall 421 of the first linear slide groove are staggered in the rotation axis direction, for this reason, in the embodiment of the present application, the first sliding part 320 and the second sliding part 330 which are respectively used to cooperate with the first limiting groove wall 412 and the second limiting groove wall 421 are distributed along the rotation axis, and the distribution of the two corresponds to the distribution of the first limiting groove wall 412 and the second limiting groove wall 421, so that the first sliding part 320 can cooperate with the first limiting groove wall 412, and the second sliding part 330 can cooperate with the second limiting groove arm.

[0044] In more detail, the first sliding portion 320 has a first limiting surface 321, and the second sliding portion 330 has a second limiting surface 331. When the third swing arm 301 and the first bracket 401 form an assembly relationship, the first limiting surface 321 is set toward the first limiting groove wall 412, and the second limiting surface 331 is set toward the second limiting groove wall 421. Therefore, under the joint action of the first limiting groove wall 412 and the second limiting groove wall 421, the third swing arm 301 can form a limiting matching relationship with the first linear slide groove in the above-mentioned limiting direction.

[0045] In order to ensure that the first limiting surface 321 and the first limiting groove wall 412, as well as the second limiting surface 331 and the second limiting groove wall 421, can have a relatively large matching size in the aforementioned width direction, such as Figure 3 As shown, combined with Figure 4 and Figure 5 As shown in the embodiment of the present application, at least a portion of the second sliding part 330 is located on the side of the first limiting surface 321 facing the screen support side, and at least a portion of the first sliding part 320 is located on the side of the second limiting surface 331 away from the screen support side. When this technical solution is adopted, even if the width dimension of the hinge mechanism is reduced, resulting in the corresponding reduction of the dimensions of the first sliding part 320 and the second sliding part 330 in the third swing arm 301 in the aforementioned width direction, the first sliding part 320 and the second sliding part 330 can still have relatively large matching dimensions with the first limiting groove wall 412 and the second limiting groove wall 421 in the width direction while the dimensions of the first sliding part 320 and the second sliding part 330 in the limiting direction remain unchanged.

[0046] like Figure 4 and Figure 5 As shown, and taking the orientation shown in the above figure as an example, for the third swing arm 301 located on the right side of the base 100, its first limiting surface 321 is located on the left side of the third swing arm 301, and the first limiting surface 321 and the first limiting groove wall 412 which is located on the left side of the third swing arm 301 as a whole are mutually limited. Correspondingly, the second limiting surface 331 is located on the right side of the third swing arm 301, and the second limiting surface 331 and the second limiting groove wall 421 which is located on the right side of the third swing arm 301 as a whole are mutually limited. In layman's terms, in the embodiment of the present application, relative to the first bracket 401, the first sliding portion 320 for limiting the leftward movement of the entire third swing arm 301 is set as a whole to the right, so that the left side of the area where the first limiting groove wall 412 in the first linear slide groove is located has a relatively large portion, so as to form a first limiting groove wall 412 with a relatively large size in the width direction, which is used to cooperate with the first limiting surface 321; correspondingly, the second sliding portion 330 for limiting the rightward movement of the entire third swing arm 301 is set as a whole to the left, so that the right side of the area where the second limiting groove wall 421 in the first linear slide groove is located has a relatively large portion, so as to form a second limiting groove wall 421 with a relatively large size in the width direction, which is used to cooperate with the second limiting surface 331, which enables the first limiting surface 321 and the second limiting surface 331 to form a larger overlapping matching area with the corresponding surface on the first bracket 401 in the width direction.

[0047] Of course, it should be noted that Figure 4 and Figure 5 As shown, since the first sliding part 320 is overall arranged to the right, the size of the groove wall corresponding to the other surface of the first sliding part 320 that is away from its first limiting surface 321 on the first bracket 401 in the width direction is relatively smaller. Correspondingly, since the second sliding part 330 is overall arranged to the left, the size of the groove wall corresponding to the other surface of the second sliding part 330 that is away from its second limiting surface 331 on the first bracket 401 in the width direction is also relatively smaller, but this will not have an adverse effect on the matching stability between the third swing arm 301 and the first bracket 401.

[0048] In the above-mentioned embodiment of the present application, a part of the second sliding part 330 can be located on the side of the first limiting surface 321 facing the screen support side, and a part of the first sliding part 320 can be located on the side of the second limiting surface 331 away from the screen support side. In order to further expand the matching dimensions between the first limiting surface 321 and the first limiting groove wall 412, and between the second limiting surface 331 and the second limiting groove wall 421 in the above-mentioned width direction, in another embodiment of the present application, the second sliding part 330 can be located as a whole on the side of the first limiting surface 321 facing the screen support side, and the first sliding part 320 can be located as a whole on the side of the second limiting surface 331 away from the screen support side, that is, in the embodiment of the present application, the second limiting surface 331 is located on the side of the first limiting surface 321 facing the screen support side. In this case, the second limiting surface 331 is still used as the first limiting surface 321. Figure 4 and Figure 5 Taking the shown orientation as an example, the first limiting surface 321 for limiting the leftward movement of the third swing arm 301 is set further to the right, and the second limiting surface 331 for limiting the rightward movement of the third swing arm 301 is set further to the left, thereby further improving the matching stability between the third swing arm 301 and the first bracket 401.

[0049] As described above, the first sliding part 320 and the second sliding part 330 are distributed in the rotation axis direction, and optionally, the number of the first sliding part 320 and the second sliding part 330 is one. In another embodiment of the present application, the number of at least one of the first sliding part 320 and the second sliding part 330 can be multiple, and the first sliding part 320 and the second sliding part 330 are arranged alternately in the rotation axis direction. In this case, the third swing arm 301 can be prevented from being deflected around its own sliding direction during operation, so as to further improve the matching stability between the third swing arm 301 and the first bracket 401.

[0050] In the above embodiment, the first bracket 401 is provided with a first linear slide groove, and the first linear slide groove has a first limiting groove wall 412 and a second limiting groove wall 421. Although the two are not arranged opposite to each other along the limiting direction, in essence, the first limiting groove wall 412 and the second limiting groove wall 421 are still located on opposite sides of the first linear slide groove respectively. In this case, along the sliding direction around the third swing arm 301, the first linear slide groove still has a closed annular groove wall. For this reason, during the processing of the first bracket 401, the dimensions of the first bracket 401 and the first slide groove in the aforementioned rotation axis direction can be appropriately increased so that processing tools and other processing devices can be extended into the first slide groove to perform cutting processing on the first bracket 401, thereby forming a complete first linear slide groove on the first bracket 401.

[0051] In order to reduce the difficulty of processing the first bracket 401, especially the first linear slide groove, and make the size of the first bracket 401 in the rotation axis direction relatively small, in another embodiment of the present application, as Figure 7 and Figure 8 As shown, the first bracket 401 can include a frame body 410 and a stopper 420 which are separately provided, that is, the frame body 410 and the stopper 420 can be formed by separate molding, and the two are independent structures. When the hinge mechanism is applied to an electronic device, the stopper 420 can be fixed on the housing of the electronic device, and correspondingly, the frame body 410 can also be fixedly installed on the housing of the electronic device, so that the frame body 410 and the stopper 420 can still form a relatively stable matching relationship.

[0052] Furthermore, the frame 410 is provided with a first limiting groove wall 412, and the frame 410 is provided with a notch, so that during the mutual assembly of the hinge mechanism and the housing, the limiting portion 420 can be embedded in the notch of the frame 410, so that the limiting portion 420 and the frame 410 can still form a first linear slide. Correspondingly, the limiting portion 420 has a second limiting groove wall 421. In this case, while ensuring that the third swing arm 301 can still be respectively limited with the first limiting groove wall 412 and the second limiting groove wall 421, the processing difficulty of the entire first bracket 401 can be greatly reduced. Of course, the specific structures, dimensions and other parameters of the frame 410, the limiting portion 420 and the first linear slide in the first bracket 401 are not limited in this article.

[0053] Based on the third swing arm 301 and the first bracket 401 disclosed in the above embodiment, in a further embodiment of the present application, the structures of the fourth swing arm 302 and the second bracket 402 can also be correspondingly designed with reference to the third swing arm 301 and the first bracket 401, so that the matching stability between the fourth swing arm 302 and the second bracket 402 is also relatively high. Considering the simplicity of the text, the specific structure of the fourth swing arm 302 and the second bracket 402 will not be repeatedly described here. Those skilled in the art can refer to the above-mentioned relevant implementation methods of the third swing arm 301 and the first bracket 401 of the present application.

[0054] 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, characterized in that: It includes a base, a first swing arm and a first bracket, wherein: The first swing arm is disposed on one side of the base, and the first swing arm includes a first rotating part and a second rotating part that are fixedly connected; One of the base and the first rotating part is provided with a first arc-shaped slide groove, and the other is provided with a first arc-shaped slider, and the first arc-shaped slider is rotatably connected to the first arc-shaped slide groove; one of the first bracket and the second rotating part is provided with a second arc-shaped slide groove, and the other is provided with a second arc-shaped slider, and the second arc-shaped slider is rotatably connected to the second arc-shaped slide groove, the rotatable angle of the first swing arm relative to the base is greater than the rotatable angle of the first bracket relative to the base, and the rotation axes of the first arc-shaped slider and the second arc-shaped slider are parallel to each other.

2. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism comprises a second swing arm and a second bracket, the second swing arm is arranged on the other side of the base, and the second swing arm comprises a third rotating part and a fourth rotating part which are fixedly connected; One of the base and the third rotating part is provided with a third arc-shaped slide groove, and the other is provided with a third arc-shaped slider, and the third arc-shaped slider is rotatably connected to the third arc-shaped slide groove; one of the second bracket and the fourth rotating part is provided with a fourth arc-shaped slide groove, and the other is provided with a fourth arc-shaped slider, and the fourth arc-shaped slider is rotatably connected to the fourth arc-shaped slide groove, the rotation angle of the second swing arm relative to the base is greater than the rotation angle of the second bracket relative to the base, and the rotation axes of the third arc-shaped slider and the fourth arc-shaped slider are parallel to each other.

3. The hinge mechanism according to claim 2, characterized in that: The base is provided with the first arc-shaped slide groove and the third arc-shaped slide groove, and in a plane perpendicular to the rotation axis of the hinge mechanism, the projection of the first arc-shaped slide groove at least partially overlaps with the projection of the third arc-shaped slide groove.

4. The hinge mechanism according to claim 3, characterized in that: A portion of each of the first arc-shaped slide groove and the third arc-shaped slide groove is arranged flush with the rotation axis, and both the first rotating part and the third rotating part are provided with an avoidance notch; When the hinge mechanism is in the unfolded state, a portion of the first rotating part is embedded in the avoidance notch of the third rotating part, and a portion of the third rotating part is embedded in the avoidance notch of the first rotating part, and in the axial direction of rotation, the first rotating part and the third rotating part are limitedly matched.

5. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism also includes a third swing arm, a fourth swing arm and a second bracket, the third swing arm and the fourth swing arm are respectively arranged on opposite sides of the base, and the third swing arm and the fourth swing arm rotate toward or away from the base synchronously, the third swing arm is slidably connected to the first bracket, and the fourth swing arm is slidably connected to the second bracket.

6. The hinge mechanism according to claim 5, characterized in that: The first bracket is provided with a first linear slide groove, the third swing arm is slidably mounted on the first linear slide groove, the first linear slide groove has a first limiting groove wall and a second limiting groove wall, in the limiting direction, the first limiting groove wall is located on the side of the first linear slide groove facing the screen supporting side of the first bracket, and the second limiting groove wall is located on the side of the first linear slide groove facing away from the screen supporting side of the first bracket, wherein the limiting direction is perpendicular to the rotation axis and perpendicular to the sliding direction of the third swing arm; The third swing arm comprises a fifth rotating part, a first sliding part and a second sliding part, the fifth rotating part is rotatably connected to the base, one end of each of the first sliding part and the second sliding part is fixedly connected to the fifth rotating part, and the first sliding part and the second sliding part are distributed along the rotating axis, the first sliding part has a first limiting surface, the second sliding part has a second limiting surface, the first limiting surface is arranged toward the first limiting groove wall, the second limiting surface is arranged toward the second limiting groove wall, and in the limiting direction, the third swing arm is limitedly matched with the first linear sliding groove; At least a portion of the second sliding portion is located on a side of the first limiting surface facing the screen supporting side, and at least a portion of the first sliding portion is located on a side of the second limiting surface facing away from the screen supporting side.

7. The hinge mechanism according to claim 6, characterized in that: The second limiting surface is located on a side of the first limiting surface facing the screen supporting side.

8. The hinge mechanism according to claim 6, characterized in that: At least one of the first sliding portion and the second sliding portion is plural in number, and the first sliding portion and the second sliding portion are alternately arranged in the rotation axis direction.

9. The hinge mechanism according to claim 6, characterized in that: The first bracket includes a frame body and a limiting portion which are separately arranged, the limiting portion can be fixed on the housing of the electronic device, the frame body is provided with the first limiting groove wall, and the frame body is provided with a notch, the limiting portion can be embedded in the notch and form the first straight groove with the frame body, and the limiting portion has the second limiting groove wall.

10. An electronic device, characterized in that: It comprises a shell, a display screen and the hinge mechanism according to any one of claims 1 to 9, wherein there are multiple shells, and two adjacent shells are rotatably connected via the hinge mechanism, and the display screen is mounted on the shell.

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