Hinge assembly and electronic equipment

Abstract

The invention discloses a hinge assembly and electronic equipment, and relates to the technical field of hinges. The hinge assembly is applied to the electronic equipment and comprises a hinge base, a synchronous shaft, a synchronous swing arm, a virtual swing arm and at least two door plates, the door plates comprise the first door plate and the second door plate, the face, away from a display screen of the electronic equipment, of each door plate is a first face, a first sliding groove is formed in the first face, and the synchronous shaft is arranged on the hinge base; the first end of the synchronous swing arm is rotatably arranged on the synchronous shaft in a sleeving mode, the first end of the virtual swing arm is in sliding fit with the hinge base, a first connecting shaft is arranged on the side wall of the second end of the virtual swing arm, extends in the length direction of the hinge assembly, is in sliding fit with the first sliding groove and is close to the synchronous swing arm, and the second end of the virtual swing arm is in sliding fit with the second sliding groove. When the electronic equipment is in a folded state, the first connecting shaft and the first sliding groove are in limiting fit in the thickness direction of the door plate so as to prevent the first door plate and the second door plate from getting close to each other.

Description

Technical Field

[0001] This application belongs to the technical field of hinges, and particularly relates to a hinge assembly and an electronic device. Background Art

[0002] With the rapid development of the consumer electronics industry, users' functional requirements for electronic devices have become increasingly high. At present, some users are more pursuing the display experience of large screens and the convenience of carrying, which makes foldable mobile phones, tablets, computers and other electronic devices favored by them. The existing foldable electronic devices on the market include a flexible display screen, two device bodies, and a hinge assembly. The device bodies are used to support the display screen. The hinge assembly is disposed at the position where the two device bodies are joined and is respectively connected to the two device bodies, so that the two device bodies can be switched between an unfolded state and a folded state.

[0003] However, during the use of foldable electronic devices, it is inevitable that they will fall. When the foldable electronic device is in the folded state and falls, the moving parts of its hinge assembly (such as the door panel and the synchronous swing arm) will move relative to each other under the action of inertia, causing misalignment between the moving parts, resulting in the encroachment of the safety gap reserved with the display screen and squeezing the display screen to damage it, thus greatly shortening the service life of the display screen. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a hinge assembly and an electronic device, which can solve the problem of the short service life of the display screen of current electronic devices.

[0005] To solve the above technical problems, this application is implemented as follows: In a first aspect, this application provides a hinge assembly, which is applied to an electronic device. The first device body and the second device body of the electronic device are rotationally connected through the hinge assembly. The hinge assembly is characterized in that it includes a hinge base, a synchronous shaft, a synchronous swing arm, a virtual swing arm, and a door panel. The number of the door panels is at least two, including a first door panel and a second door panel. The first door panel is connected to the first device body, and the second door panel is connected to the second device body. One side of the door panel facing away from the display screen of the electronic device is the first side. The first side is provided with a first chute. The synchronous shaft is disposed on the hinge base. The first end of the synchronous swing arm is rotatably sleeved on the synchronous shaft. The first end of the virtual swing arm is slidably matched with the hinge base. A first connecting shaft is provided on the side wall of the second end of the virtual swing arm. The first connecting shaft extends along the length direction of the hinge assembly. The first connecting shaft is slidably matched with the first chute. The first connecting shaft is close to the synchronous swing arm. When the electronic device is in the folded state, the first connecting shaft and the first sliding groove are in limit fit in the thickness direction of the door panel to prevent the first door panel and the second door panel from approaching each other.

[0006] In a second aspect, the present application further provides an electronic device, including a first device body, a second device body, and the hinge assembly as described above, wherein the first device body is connected to the second device body through the hinge assembly; During the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state.

[0007] In an embodiment of the present application, a first sliding groove is provided on a side of the door panel facing away from the display screen of the electronic device. The synchronous shaft is arranged on the hinge base. The first end of the synchronous swing arm is rotatably sleeved on the synchronous shaft. The first end of the virtual swing arm is slidably matched with the hinge base. A first connecting shaft is provided on the side wall of the second end of the virtual swing arm. The first connecting shaft extends along the length direction of the hinge assembly. The first connecting shaft is slidably matched with the first sliding groove. The first connecting shaft is close to the synchronous swing arm. When the electronic device is in the folded state, the first connecting shaft and the first sliding groove are in limit fit in the thickness direction of the door panel to prevent the first door panel and the second door panel from approaching each other.

[0008] In this solution, by additionally providing a first sliding groove on the door panel and adding a first connecting shaft on the side of the virtual swing arm close to the synchronous swing arm, when the electronic device is in the folded state and drops, once the door panel shows a tendency to tilt towards the display screen, at this time, the virtual swing arm and the door panel are in limit fit in the thickness direction of the door panel through the first connecting shaft and the first sliding groove to prevent the door panel from tilting, thereby preventing the first door panel and the second door panel from approaching each other, and further avoiding squeezing the display screen to protect the display screen, which is beneficial to extending the service life of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Partial structural schematic diagram of the hinge assembly disclosed in an embodiment of the present application; Figures 2 to 3 is Figure 1 Cross-sectional view at A-A of the structure shown from different perspectives; Figure 4 is Figure 1 Cross-sectional view at A-A of partial structure of the structure shown in the folded state; Figures 5 to 6 is Figure 1 Cross-sectional view at B-B of the structure shown from different perspectives; Figure 7 is Figure 1 Cross-sectional view at B-B of partial structure of the structure shown in the folded state; Figures 8 to 9 is Figure 1 The sectional view at C-C of the structure shown from different perspectives; Figure 10 is Figure 1 The sectional view at C-C of a partial structure of the structure shown in the folded state; Figures 11 to 12 is Figure 1 The sectional view at D-D of the structure shown from different perspectives; Figures 13 to 14 is Figure 1 The sectional view at E-E of the structure shown from different perspectives; Figure 15 is Figure 1 The sectional view at E-E of a partial structure of the structure shown in the folded state; Figure 16 is Figure 1 The enlarged partial view of the structure shown; Figure 17 is Figure 16 The enlarged partial view of the structure shown; Figure 18 is Figure 16 Another enlarged partial view of the structure shown; Figure 19 The partial structure schematic diagram of the door panel disclosed in the embodiment of the present application; Figure 20 The partial structure schematic diagram of the hinge assembly disclosed in the embodiment of the present application; Figure 21 The partial structure schematic diagram of the hinge assembly disclosed in the embodiment of the present application; Figure 22 The partial structure schematic diagram of the door panel disclosed in the embodiment of the present application; Figure 23 The exploded view of the hinge assembly disclosed in the embodiment of the present application; Figure 24 The structure schematic diagram of the hinge assembly disclosed in the embodiment of the present application.

[0010] Explanation of reference numerals: 100 - hinge base; 200 - synchronous shaft; 300 - synchronous swing arm, 310 - third connecting shaft, 320 - first support part; 400 - virtual swing arm, 410 - first connecting shaft, 420 - support structure, 430 - second connecting shaft; 500 - Door panel, 501 - First surface, 502 - Slide rail, 510 - First chute, 511 - Avoidance opening, 512 - First groove section, 513 - Second groove section, 520 - Second surface, 530 - Second chute, 540 - Third chute, 541 - Chute section, 542 - Limiting section, 550 - Plate body, 560 - First protrusion, 570 - Partition wall, 580 - Third support part, 581 - Support surface, 590 - Groove, 591 - First guiding inclined surface, 599 - Second protrusion; 600 - Frame connector, 610 - Second support part, 620 - Second guiding inclined surface, 630 - Fourth chute; 710 - Virtual swing arm fixing bracket, 720 - Synchronous gear, 730 - Gear shaft, 740 - Gear seat, 750 - Spring, 760 - Fixing bracket. Detailed implementation mode

[0011] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0012] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0013] Next, in conjunction with the accompanying drawings, the hinge assembly and electronic device provided by the embodiments of the present application will be described in detail through specific embodiments and their application scenarios.

[0014] As Figures 1 to 24 shown, an embodiment of the present application discloses a hinge assembly, which is applied to an electronic device, and the first device body and the second device body of the electronic device are rotatably connected through the hinge assembly.

[0015] The hinge assembly includes a hinge base 100, a synchronous shaft 200, a synchronous swing arm 300, a virtual swing arm 400, and door panels 500. The number of door panels 500 is at least two, including a first door panel and a second door panel. The first door panel is connected to the first device body, and the second door panel is connected to the second device body. Optionally, the hinge base 100 is used to provide a mounting basis for structures such as the synchronous shaft 200.

[0016] One side of the door panel 500 facing away from the display screen of the electronic device is the first side 501, and a first sliding groove 510 is provided on the first side 501. Optionally, the first sliding groove 510 can be an arc structure or a linear structure, and the embodiments of the present application do not make specific limitations on this. The synchronous shaft 200 is arranged on the hinge base 100. The first end of the synchronous swing arm 300 is rotatably sleeved on the synchronous shaft 200, and the first end of the virtual swing arm 400 is slidably matched with the hinge base 100. Optionally, the first end of the virtual swing arm 400 and the hinge base 100 can be axially bushed, that is, an arc-shaped sliding groove is provided on one of the first end of the virtual swing arm 400 and the hinge base 100, and an arc-shaped connecting portion is provided on the other, and the arc-shaped connecting portion is slidably matched with the arc-shaped sliding groove. A first connecting shaft 410 is provided on the side wall of the second end of the virtual swing arm 400. The first connecting shaft 410 extends along the length direction of the hinge assembly. Here, the length direction of the hinge assembly specifically refers to the direction in which the top of the electronic device extends to the bottom when the user holds the electronic device in the folded state of the electronic device. The first connecting shaft 410 is slidably matched with the first sliding groove 510. The first connecting shaft 410 is close to the synchronous swing arm 300. In the case where the electronic device is in the folded state, the first connecting shaft 410 and the first sliding groove 510 are limitedly matched in the thickness direction of the door panel 500 to prevent the first door panel and the second door panel from approaching each other.

[0017] In the embodiments of the present application, by additionally providing the first sliding groove 510 on the door panel 500 and adding the first connecting shaft 410 on the side of the virtual swing arm 400 close to the synchronous swing arm 300, when the electronic device is in the folded state and drops, once the door panel 500 shows a tendency to tilt towards the display screen direction, at this time, the virtual swing arm 400 and the door panel 500 are limitedly matched in the thickness direction of the door panel 500 through the first connecting shaft 410 and the first sliding groove 510 to prevent the door panel 500 from tilting, thereby preventing the first door panel and the second door panel from approaching each other, and further avoiding squeezing the display screen to protect the display screen, which is beneficial to extending the service life of the display screen. Therefore, the embodiments of the present application can solve the problem that the service life of the display screen of the current electronic device is relatively short.

[0018] It should be noted that in the above embodiments, a connecting shaft may also be provided on the side of the virtual swing arm 400 away from the synchronous swing arm 300. At this time, connecting shafts are provided on both sides of the virtual swing arm 400 opposite to each other in the length direction of the hinge assembly. This can not only increase the binding force exerted on the door panel 500 by the virtual swing arm 400, but also make the binding force received by the door panel 500 uniform, thereby improving the stability of the door panel 500 when the electronic device is in a dropped state. In addition, on the basis that the above solution provides a connecting shaft on the side of the virtual swing arm 400 away from the synchronous swing arm 300, only the first connecting shaft 410 is added, and its cost is relatively low. That is to say, this solution solves the problem of the inward rotation of the door panel 500 at low cost.

[0019] Optionally, the virtual swing arm 400 is provided with a support structure 420. When the electronic device is in a folded state and drops, due to the impact force, the hinge assembly causes the door panel 500 to fall towards the hinge base 100 and will be supported on the support structure 420 of the virtual swing arm 400 to prevent the door panel 500 from continuing to fall and squeezing the display screen. Optionally, a first receiving groove is provided on the side of the virtual swing arm 400 facing the display screen, and the side wall of the first receiving groove close to the hinge base 100 can form the above support structure 420.

[0020] In an alternative embodiment, the side of the door panel 500 facing the display screen is the second surface 520. When the electronic device is in a folded state, there is an angle A between the second surface 520 and a plane parallel to the length direction and the thickness direction of the hinge base 100. The distance between the first end of the first sliding groove 510 and the second surface 520 may be equal to or approximately equal to the distance between the second end of the first sliding groove 510 and the second surface 520; or, optionally, the distance between the first end of the first sliding groove 510 and the second surface 520 is greater than the distance between the second end of the first sliding groove 510 and the second surface 520, that is, there is an angle B between the line connecting the first end and the second end of the first sliding groove 510 and the second surface 520. When the electronic device is in a folded state, the first connecting shaft 410 and the first end of the first sliding groove 510 are in limit fit in the thickness direction of the door panel 500. Optionally, the angle B is greater than the angle A, so that when the electronic device drops, the door panel 500 spreads out with the virtual swing arm 400 through the first connecting shaft 410.

[0021] When the electronic device is in a folded state and drops, due to the impact force, the door panel 500 has a rotational tendency towards the side close to the display screen (i.e., the door panel 500 has an inward rotation tendency), while the virtual swing arm 400 has a rotational tendency towards the side away from the display screen (i.e., the virtual swing arm 400 has an outward rotation tendency). At this time, the first connecting shaft 410 of the virtual swing arm 400 and the first end of the first sliding groove 510 of the door panel 500 are limited and matched in the thickness direction of the door panel 500. And because the first sliding groove 510 is inclined towards the side away from the display screen with respect to the second surface 520 (the second surface 520 is the surface of the door panel 500 facing the display screen), the binding force acting on the inner wall of the first end of the first sliding groove 510 by the first connecting shaft 410 is relatively large, which can more effectively restrain the door panel 500 and prevent the door panel 500 from rotating towards the side close to the display screen, thereby further improving the effect of the hinge assembly in protecting the display screen.

[0022] In another alternative embodiment, the surface of the door panel 500 facing the display screen is the second surface 520. When the electronic device is in a folded state, there is an angle A between the second surface 520 and a plane parallel to the length direction and the thickness direction of the hinge base 100. The first surface 501 of the door panel 500 is further provided with a second sliding groove 530 arranged at intervals with the first sliding groove 510 in the length direction of the hinge assembly. Optionally, the second sliding groove 530 can be an arc structure or a linear structure, and the embodiments of the present application do not make specific limitations on this. The distance between the first end of the second sliding groove 530 and the second surface 520 can be equal to or approximately equal to the distance between the second end of the second sliding groove 530 and the second surface 520; or, optionally, the distance between the first end of the second sliding groove 530 and the second surface 520 is greater than the distance between the second end of the second sliding groove 530 and the second surface 520, that is, the connection line between the first end and the second end of the second sliding groove 530 has an angle C with the second surface 520. On the opposite side walls of the virtual swing arm 400 in the length direction of the hinge assembly, a second connecting shaft 430 and the above-mentioned first connecting shaft 410 are respectively provided. The axis of the second connecting shaft 430 coincides with the axis of the first connecting shaft 410, and the second connecting shaft 430 is slidably matched with the second sliding groove 530. When the electronic device is in a folded state, the second connecting shaft 430 and the first end of the second sliding groove 530 are limited and matched in the thickness direction of the door panel 500 to prevent the first door panel and the second door panel from approaching each other. Optionally, the angle C is greater than the angle A, so that when the electronic device drops, the door panel 500 spreads out with the virtual swing arm 400 through the second connecting shaft 430. Optionally, the angle C here can be equal to the angle B described above or equal to the angle B described above, and no specific limitation is made here.

[0023] When the electronic device is in a folded state and drops, due to the impact force, the door panel 500 has a rotational tendency towards the side close to the display screen (i.e., the door panel 500 has an inward rotation tendency), while the virtual swing arm 400 has a rotational tendency towards the side away from the display screen (i.e., the virtual swing arm 400 has an outward rotation tendency). At this time, the first connecting shaft 410 and the second connecting shaft 430 of the virtual swing arm 400 are respectively in limit fit with the first end of the first chute 510 and the first end of the second chute 530 of the door panel 500 in the thickness direction of the door panel 500. And since the second chute 530 is inclined towards the side away from the display screen with respect to the second surface 520 (the second surface 520 is the side of the door panel 500 facing the display screen), the binding force exerted by the second connecting shaft 430 on the inner wall of the first end of the second chute 530 is relatively large, which can more effectively restrain the door panel 500 and prevent the door panel 500 from rotating towards the side close to the display screen, thereby further enhancing the effect of the hinge assembly in protecting the display screen.

[0024] Optionally, in the above embodiment, the distance between the first end of the first chute 510 and the second surface 520 is also greater than the distance between the second end of the first chute 510 and the second surface 520. When the electronic device is in a folded state and drops, the first connecting shaft 410 is in limit fit with the first end of the first chute 510 in the thickness direction of the door panel 500, and the second connecting shaft 430 is in limit fit with the first end of the second chute 530 in the thickness direction of the door panel 500. At this time, the binding force exerted by the first connecting shaft 410 on the inner wall of the first end of the first chute 510 and the binding force exerted by the second connecting shaft 430 on the inner wall of the first end of the second chute 530 are both relatively large, which is beneficial to further enhancing the effect of the virtual swing arm 400 in restraining the door panel 500.

[0025] In another alternative embodiment, a third chute 540 is further provided on the first surface 501 of the door panel 500. The third chute 540 is an arc-shaped chute. The third chute 540 and the first chute 510 are spaced apart in the length direction of the hinge assembly. A third connecting shaft 310 is provided on the side wall of the second end of the synchronous swing arm 300. The third connecting shaft 310 extends along the length direction of the hinge assembly. The third connecting shaft 310 is in sliding fit with the third chute 540. In the case where the electronic device is in a folded state, the third connecting shaft 310 is in limit fit with the third chute 540 in the thickness direction of the door panel 500 to prevent the first door panel and the second door panel from approaching each other.

[0026] When the electronic device is in a folded state and drops, due to the impact force, the door panel 500 has a rotational tendency towards the side close to the display screen (i.e., the door panel 500 has an inward rotation tendency), while the synchronous swing arm 300 has a rotational tendency towards the side away from the display screen (i.e., the virtual swing arm 400 has an outward rotation tendency). At this time, the third connecting shaft 310 of the synchronous swing arm 300 and the third sliding groove 540 of the door panel 500 are in limit cooperation in the thickness direction of the door panel 500, and the virtual swing arm 400 and the door panel 500 are in limit cooperation in the thickness direction of the door panel 500 through the first connecting shaft 410 and the first sliding groove 510. That is, the synchronous swing arm 300 and the virtual swing arm 400 are combined to simultaneously constrain the door panel 500, so as to increase the area of the door panel 500 receiving the constraint force, thereby further constraining the door panel 500, which is beneficial to further prevent the first door panel and the second door panel from approaching each other.

[0027] In addition, it should be noted that since the first end of the synchronous swing arm 300 is rotatably connected to the synchronous shaft 200, when the synchronous swing arm 300 rotates around the synchronous shaft 200, the movement track of the second end of the synchronous swing arm 300 is an arc structure. Therefore, the third sliding groove 540 is set as an arc-shaped sliding groove so that the first end of the synchronous swing arm 300 and the third sliding groove 540 can be adapted to each other during the sliding process.

[0028] In a further optional embodiment, the synchronous swing arm 300 is further provided with a first support portion 320. Optionally, a second receiving groove is provided on the side of the synchronous swing arm 300 facing the display screen, and the side wall of the second receiving groove close to the hinge base 100 can form the first support portion 320. When the electronic device is in a folded state, the first support portion 320 is located between the hinge base 100 and the door panel 500, and the door panel 500 and the first support portion 320 can be in mutual contact. It should be noted that when the electronic device is in a folded state and in a non-drop state, there is a first distance between the third connecting shaft 310 and the side wall of the third sliding groove 540 away from the hinge base 100, and the distance between the first support portion 320 and the door panel 500 is less than the first distance. When the electronic device is in a folded state and drops, due to the impact force, the door panel 500 drops towards the direction close to the hinge base 100 and will be supported on the first support portion 320 of the synchronous swing arm 300. At this time, the door panel 500 and the first support portion 320 are in mutual contact, thereby preventing the door panel 500 from continuing to drop and squeezing the display screen, and further improving the performance of the hinge assembly in protecting the display screen.

[0029] In another alternative embodiment, the third sliding groove 540 includes a sliding groove section 541 and a limiting section 542 that communicate with each other. The door panel 500 includes a connected plate body 550 and a first protruding portion 560. The first protruding portion 560 is located on one side of the plate body 550 in its thickness direction, that is, the first protruding portion 560 is located on the side of the plate body 550 away from the display screen. The entire third sliding groove 540 can be formed in the first protruding portion 560, that is, both the sliding groove section 541 and the limiting section 542 can be formed in the first protruding portion 560; alternatively, optionally, the first protruding portion 560 is provided with the sliding groove section 541, and the plate body 550 is provided with the limiting section 542, that is, a part of the third sliding groove 540 is formed in the first protruding portion 560, and the other part is formed in the plate body 550. When the electronic device is in the folded state, the third connecting shaft 310 and the limiting section 542 are in limiting cooperation in the thickness direction of the door panel 500. In this solution, a part of the third sliding groove 540 (i.e., the limiting section 542) is formed in the plate body 550 of the door panel 500, which can reduce the height of the first protruding portion 560, thereby reducing the overall thickness of the door panel 500 and facilitating the thinning and lightening of the electronic device.

[0030] Optionally, the third connecting shaft 310 can be located on the side of the synchronous swing arm 300 away from the first connecting shaft 410; or, in other alternative embodiments, the third connecting shaft 310 is located on the side of the synchronous swing arm 300 close to the first connecting shaft 410. Since there are connecting members and other structures between the frame connecting member 600 for connecting the hinge assembly and the door panel 500 on the side of the synchronous swing arm 300 away from the first connecting shaft 410, setting the third connecting shaft 310 on the side of the synchronous swing arm 300 close to the first connecting shaft 410 can avoid interference between the third connecting shaft 310 and the above-mentioned connecting members and other structures; moreover, the adjacent arrangement of the third connecting shaft 310 and the first connecting shaft 410 can save space, thereby improving the structural compactness of the hinge assembly.

[0031] Optionally, a partition wall 570 is provided on the side of the third sliding groove 540 close to the first sliding groove 510. In the length direction of the hinge assembly, the third connecting shaft 310 and the first connecting shaft 410 are respectively arranged on both sides of the partition wall 570, so as to avoid interference between the third connecting shaft 310 and the first connecting shaft 410 during the process of the electronic device switching between the unfolded state and the folded state.

[0032] In another alternative embodiment, the hinge assembly further includes a frame connector 600. The frame connector 600 is slidably connected to the synchronous swing arm 300 and is also slidably connected to the virtual swing arm 400. Optionally, the frame connector 600 can be slidably connected to the synchronous swing arm 300 and the virtual swing arm 400 through a slide rail structure. Among them, the angle of the frame connector 600 is controlled by the synchronous swing arm 300, and the position of the frame connector 600 on the slide rail of the synchronous swing arm 300 is controlled by the virtual swing arm 400. The frame connector 600 is provided with a second support portion 610. The side of the door panel 500 facing the display screen is the second surface 520, and the first surface 501 is provided with a third support portion 580. The included angle D between the support surface 581 of the third support portion 580 and the second surface 520 is an acute angle. When the electronic device is in the folded state, the frame connector 600 can abut against the support surface 581 through the second support portion 610 to prevent the first door panel and the second door panel from approaching each other. It should be noted that when the electronic device is in the folded state and in a non-falling state, there is a second distance between the second support portion 610 of the frame connector 600 and the third support portion 580 of the door panel 500. When the electronic device is in the folded state and drops, due to the impact force received by the hinge assembly, the frame connector 600 drops in the direction close to the hinge base 100, so that the frame connector 600 is supported on the second support portion 610. At this time, the second support portion 610 of the frame connector 600 abuts against the support surface 581 of the third support portion 580. At the same time, the door panel 500 has a rotational tendency toward the side close to the display screen. At this time, since the included angle D between the support surface 581 of the third support portion 580 and the second surface 520 of the door panel 500 is an acute angle, there is a binding force between the second support portion 610 and the support surface 581 to prevent the door panel 500 from tilting toward the side close to the display screen, thereby avoiding the first door panel and the second door panel from squeezing the display screen. Of course, the included angle D between the support surface 581 of the third support portion 580 and the second surface 520 of the door panel 500 can also be a right angle.

[0033] Optionally, the first surface 501 may be provided with a boss, which may form a third support portion 580; or, in other optional embodiments, the first surface 501 may also be provided with a groove 590, which may form a third support portion 580, and the groove 590 includes a first guide slope 591 and a support surface 581 connected to each other, and a second guide slope 620 is provided on a side of the frame connector 600 facing the door panel 500, and the second guide slope 620 may be guided and cooperated with the first guide slope 591 to make the frame connector 600 abut against the support surface 581. When the electronic device is in the folded state and falls, the frame connector 600 falls toward the direction close to the hinge base 100, and the frame connector 600 and the door panel 500 are guided and matched by the second guide slope 620 and the first guide slope 591, so that the frame connector 600 slides along the preset direction until it is supported on the support surface 581, which is conducive to improving the sliding accuracy of the frame connector 600 and avoiding the misalignment of the second support portion 610 and the third support portion 580. Of course, the first guide slope 591 and the second guide slope 620 mentioned above may also be omitted.

[0034] In another optional embodiment, the first slide groove 510 is provided with an avoidance opening 511. When installing the virtual swing arm 400 and the door panel 500, the first connecting shaft 410 can be installed in the first slide groove 510 through the avoidance opening 511, so that the first connecting shaft 410 and the first slide groove 510 can be slidably matched, that is, the setting of the avoidance opening 511 can facilitate the assembly of the virtual swing arm 400 and the door panel 500. The first slide groove 510 includes a first groove section 512 and a second groove section 513 that are connected, and the door panel 500 includes a connected plate body 550 and a second protrusion 599, and the second protrusion 599 is located on one side of the plate body 550 in the thickness direction thereof, that is, the second protrusion 599 is located on the side of the plate body 550 away from the display screen. The first slide groove 510 can be provided in its entirety on the second protruding portion 599, that is, both the first groove section 512 and the second groove section 513 can be provided on the second protruding portion 599; or, optionally, the second protruding portion 599 and the plate body 550 form the first groove section 512, the plate body 550 is provided with a second groove section 513, and the second groove section 513 is provided with an avoidance opening 511, and when the electronic device is in a folded state, the first connecting shaft 410 and the first groove section 512 are matched in the upper limit position in the thickness direction of the door panel 500. In this solution, part of the first slide groove 510 (that is, the second groove section 513) is provided on the plate body 550 of the door panel 500, which can reduce the height of the second protruding portion 599, thereby reducing the overall thickness of the door panel 500, which is conducive to the thinness of the electronic device.

[0035] Optionally, at least one of the first connecting shaft 410 , the second connecting shaft 430 and the third connecting shaft 310 may be a pin shaft, or other types of shaft structures, and the embodiment of the present application does not impose any specific limitation on this.

[0036] Optionally, the housing connector 600 is provided with a fourth sliding groove 630, and the first surface 501 of the door panel 500 is further provided with a sliding rail 502, and the sliding rail 502 is slidably engaged with the fourth sliding groove 630.

[0037] Optionally, the hinge assembly further includes a virtual swing arm fixing bracket 710, a synchronous gear 720, a gear shaft 730, a gear seat 740, a spring 750, a snap ring, a cam, and a fixing bracket 760. The virtual swing arm fixing bracket 710 is disposed above the first end of the virtual swing arm 400, and the virtual swing arm fixing bracket 710 is connected to the hinge base 100 by fasteners such as screws; the gear shaft 730 is arranged side by side with the synchronous shaft 200, the synchronous gear 720 is sleeved on the gear shaft 730, and the synchronous swing arms 300 on both the left and right sides of the hinge assembly achieve synchronous movement through the synchronous gear 720; the fixing bracket 760 is disposed at the end of the hinge base 100, and the ends of the gear shaft 730 and the synchronous shaft 200 are both connected to the fixing bracket 760. The gear seat 740 is sleeved on the gear shaft 730 and the synchronous shaft 200, and springs 750 are sleeved on both the gear shaft 730 and the synchronous shaft 200. One end of the spring 750 abuts against the fixing bracket 760, and the other end of the spring 750 abuts against the gear seat 740. The spring 750 is used to provide a damping force; the cam and the snap ring are both slidably sleeved on the synchronous shaft 200, and the synchronous swing arm 300 cooperates with the cam, and the torque is achieved by the limit of the snap ring.

[0038] Based on the hinge assembly disclosed in the embodiments of the present application, the embodiments of the present application further disclose an electronic device. The electronic device includes a first device body, a second device body, and the hinge assembly described in any of the above embodiments. The first device body is rotatably connected to the second device body through the hinge assembly. Optionally, the first device body may be connected to the first swing arm assembly of the hinge assembly, and the second device body may be connected to the second swing arm assembly of the hinge assembly. Both the first swing arm assembly and the second swing arm assembly may include the synchronous swing arm 300 and the virtual swing arm 400; during the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state.

[0039] Optionally, the number of the above hinge assemblies may be at least two. In the length direction of the electronic device, the hinge assemblies are sequentially arranged at intervals, and the FPC flexible cable of the electronic device may pass through between adjacent hinge assemblies and be electrically connected to the main board.

[0040] The electronic device disclosed in the embodiments of the present application may be an electronic device such as a smart phone, a tablet computer, an e-book reader, a wearable device (such as a smart watch), an electronic game console, etc. The embodiments of the present application do not specifically limit the types of the electronic device.

[0041] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A hinge assembly is applied to an electronic device. The first device body and the second device body of the electronic device are rotationally connected through the hinge assembly, and it is characterized in that The hinge assembly includes a hinge base, a synchronization shaft, a synchronization swing arm, a virtual swing arm, and door panels. The number of the door panels is at least two, including a first door panel and a second door panel. The first door panel is connected to the first device body, and the second door panel is connected to the second device body. One side of the door panel facing away from the display screen of the electronic device is the first side. A first sliding groove is provided on the first side. The synchronization shaft is arranged on the hinge base. The first end of the synchronization swing arm is rotatably sleeved on the synchronization shaft. The first end of the virtual swing arm is in sliding fit with the hinge base. A first connecting shaft is provided on the side wall of the second end of the virtual swing arm. The first connecting shaft extends along the length direction of the hinge assembly. The first connecting shaft is in sliding fit with the first sliding groove. The first connecting shaft is close to the synchronization swing arm. When the electronic device is in the folded state, the first connecting shaft and the first sliding groove are in limit fit in the thickness direction of the door panel to prevent the first door panel and the second door panel from approaching each other.

2. The hinge assembly according to claim 1, characterized in that, One side of the door panel facing the display screen is the second side. The distance between the first end of the first sliding groove and the second side is greater than the distance between the second end of the first sliding groove and the second side. When the electronic device is in the folded state, the first connecting shaft and the first end of the first sliding groove are in limit fit in the thickness direction of the door panel.

3. The hinge assembly according to claim 1, wherein, One side of the door panel facing the display screen is the second side. The first side is further provided with a second sliding groove which is arranged at intervals with the first sliding groove in the length direction of the hinge assembly. The distance between the first end of the second sliding groove and the second side is greater than the distance between the second end of the second sliding groove and the second side. Second connecting shafts and the first connecting shaft are respectively provided on the opposite side walls of the virtual swing arm in the length direction of the hinge assembly. The axis of the second connecting shaft coincides with the axis of the first connecting shaft. The second connecting shaft is in sliding fit with the second sliding groove. When the electronic device is in the folded state, the second connecting shaft and the first end of the second sliding groove are in limit fit in the thickness direction of the door panel to prevent the first door panel and the second door panel from approaching each other.

4. The hinge assembly according to claim 1, wherein The first side is further provided with a third sliding groove which is an arc-shaped sliding groove. The third sliding groove is arranged at intervals with the first sliding groove in the length direction of the hinge assembly. A third connecting shaft is provided on the side wall of the second end of the synchronization swing arm. The third connecting shaft extends along the length direction of the hinge assembly. The third connecting shaft is in sliding fit with the third sliding groove. When the electronic device is in the folded state, the third connecting shaft and the third sliding groove are in limit fit in the thickness direction of the door panel to prevent the first door panel and the second door panel from approaching each other.

5. The hinge assembly according to claim 4, wherein, The synchronization swing arm is further provided with a first supporting portion. When the electronic device is in the folded state, the first supporting portion is located between the hinge base and the door panel, and the door panel and the first supporting portion can be in mutual abutment.

6. The hinge assembly according to claim 4, wherein, The third chute includes a communicating chute section and a limiting section. The door panel includes a connected plate body and a first protruding portion. The first protruding portion is located on one side of the plate body in its thickness direction. The first protruding portion is provided with the chute section, and the plate body is provided with the limiting section. When the electronic device is in the folded state, the third connecting shaft and the limiting section are in limiting cooperation in the thickness direction of the door panel.

7. The hinge assembly according to claim 4, characterized in that, The third connecting shaft is located on the side of the synchronous swing arm close to the first connecting shaft. A partition wall is provided on one side of the third chute close to the first chute. In the length direction of the hinge assembly, the third connecting shaft and the first connecting shaft are respectively arranged on two opposite sides of the partition wall.

8. The hinge assembly according to claim 1, wherein The hinge assembly further includes a frame connector. The frame connector is slidably connected to the synchronous swing arm. The frame connector is provided with a second supporting portion. The side of the door panel facing the display screen is the second surface, and the first surface is provided with a third supporting portion. The included angle between the supporting surface of the third supporting portion and the second surface is an acute angle. When the electronic device is in the folded state, the frame connector can be abutted against the supporting surface through the second supporting portion to prevent the first door panel and the second door panel from approaching each other.

9. The hinge assembly according to claim 8, wherein The first surface is further provided with a groove, and the groove forms the third supporting portion. The groove includes a connected first guiding inclined surface and the supporting surface. The surface of the frame connector facing the door panel is provided with a second guiding inclined surface, and the second guiding inclined surface can be in guiding cooperation with the first guiding inclined surface to enable the frame connector to be abutted against the supporting surface.

10. The hinge assembly according to claim 1, wherein, The first chute is provided with an avoidance opening. The first chute includes a connected first chute segment and a second chute segment. The door panel includes a connected plate body and a second protruding portion. The second protruding portion is located on one side of the plate body in its thickness direction. The second protruding portion and the plate body form the first chute segment, and the plate body is provided with the second chute segment. The second chute segment is provided with the avoidance opening. When the electronic device is in the folded state, the first connecting shaft and the first chute segment are in limiting cooperation in the thickness direction of the door panel.

11. An electronic device, characterized in that, It includes a first device body, a second device body, and the hinge assembly according to any one of claims 1 to 10. The first device body is rotatably connected to the second device body through the hinge assembly. During the relative rotation of the first device body and the second device body, the electronic device switches between the unfolded state and the folded state.

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