CN117128235A

CN117128235A - Hinge assembly and electronic equipment

Info

Publication number: CN117128235A
Application number: CN202310318042.9A
Authority: CN
Inventors: 董绍洪; 陈瑞豪; 彭高峰; 龚文强
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-11-28

Abstract

The application discloses a hinge assembly and electronic equipment. The chute bracket is provided with an integrally formed guiding chute. The swing arm is provided with a sliding part at the position corresponding to the guide chute, and is connected with the guide chute in a sliding way through the sliding part, so that the swing arm can rotate relative to the chute bracket to switch between a flattened state and a folded state; the swing arm is also provided with an avoidance port. The rotation stopping piece is connected with the chute bracket and penetrates through the avoiding opening, and is used for propping against the swing arm to prevent the swing arm from continuing to rotate when the swing arm rotates to a folding state. According to the hinge assembly, the rotation stopping piece independent of the swing arm and the chute support is additionally arranged, so that interference or blocking of the rotation stopping piece on the sliding part and the guide chute in the assembly stage can be avoided, and further the integrated guide chute can be adopted, so that the sliding part can be directly screwed into the guide chute, and the swing arm and the chute support can be assembled conveniently.

Description

Hinge assembly and electronic equipment

Technical Field

The present application relates to the technical field of hinge assemblies, and more particularly, to a hinge assembly and a foldable electronic device.

Background

A foldable electronic device has a hinge assembly therein. The swing arm is a key moving part used for realizing the switching between the unfolding state and the folding state in the hinge assembly, and is rotationally connected with the chute bracket through a virtual rotating shaft, and the virtual rotating shaft is limited by arranging an arc chute and an arc sliding block on the chute bracket and the swing arm respectively. In order to prevent the arc sliding block from falling out of the arc sliding groove caused by excessive rotation of the swing arm by a user or the sliding block from falling out of the groove under the limit working conditions such as falling, vibration and the like, a rotation stopping structure needs to be additionally arranged on the motion track of the virtual rotating shaft.

In the swing arm rotation stopping scheme of the related art, an arc chute is formed by splicing an upper bracket and a lower bracket, and rotation stopping structures are respectively arranged on the swing arm and the lower bracket. During assembly, the arc sliding blocks of the swing arms are firstly mounted on the lower support, then the upper support is mounted on the lower support, so that the arc sliding blocks are clamped in arc sliding grooves defined by the upper support and the lower support, and finally the two supports are fixed in a welding mode and the like, so that the assembly of the sliding groove supports and the swing arms is completed. Obviously, the conventional scheme cannot be applied to an integrated chute design.

Disclosure of Invention

The application aims to provide a hinge assembly and electronic equipment, and by additionally arranging a rotation stopping piece independent of a swing arm and a chute bracket, interference or blocking of a sliding part and a guide chute by the rotation stopping piece in the assembly stage can be avoided, and an integrated guide chute can be adopted, so that the sliding part can be directly screwed into the guide chute, and the swing arm and the chute bracket can be conveniently assembled.

In a first aspect, the present application provides a hinge assembly including a chute bracket, a swing arm, and a rotation stop.

The chute bracket is provided with an integrally formed guiding chute.

The swing arm is provided with a sliding part corresponding to the guide chute, and is connected with the guide chute in a sliding way through the sliding part, so that the swing arm can rotate relative to the chute bracket to switch between a flattened state and a folded state; the swing arm is also provided with an avoidance port.

The rotation stopping piece is connected with the chute bracket and penetrates through the avoidance opening, and is used for propping against the swing arm to prevent the swing arm from continuing to rotate when the swing arm rotates to the folding state.

According to the hinge assembly, the rotation stopping piece is a component independent of the swing arm and the chute support, and can be not installed before the swing arm and the chute support are assembled, so that interference or blocking of the rotation stopping piece on the sliding part and the guide chute in the assembly stage can be avoided, the sliding part can be smoothly screwed into the guide chute, and the swing arm and the chute support can be assembled conveniently. Therefore, the chute bracket can adopt the integrally formed guide chute, so that the processing difficulty of the guide chute is reduced, compared with the solution of the chute splitting piece in the related art, the problem that the fit clearance between the sliding part and the guide chute is too large or too small due to poor process control can be avoided, and the folding hand feeling of a user when using the hinge assembly is ensured.

In one possible embodiment, the slotted guide support has a limiting opening into which the rotation stop element is inserted. The mounting hole site is provided by the stop screw.

In one possible design, the chute support is provided with a boss on which the limit hole is located.

The boss is used for additionally supporting the rotation stopping piece, so that the stop and anti-falling effect of the rotation stopping piece on the swing arm is improved. Compared with the limiting hole formed by the chute bracket, the limiting hole formed by the boss is deeper, so that the limiting hole can have larger abutting area with the rotation stopping piece, and the stop strength of the rotation stopping piece is improved.

In one possible design, the rotation stop is fixedly mounted in the limiting aperture.

The connecting area of the rotation stopping piece and the chute bracket is increased, the connecting strength of the rotation stopping piece and the chute bracket is improved, and the stop anti-falling effect of the rotation stopping piece on the swing arm is further improved.

In one possible design, one end of the rotation stop is provided with a positioning portion for defining the insertion depth of the rotation stop.

The locating part is processed on the rotation stopping piece in advance, and the locating part is directly inserted into the limiting hole in the assembling process, so that the precision and the efficiency of the hinge during assembling are improved.

In one possible design, the orifice of the limiting hole is provided with a notch for limiting the position of the positioning part.

The locating part is inserted into the notch and used for further limiting the rotation stopping piece and preventing the rotation stopping piece from shaking.

In one possible design, the peripheral wall of the end of the rotation stopping piece far away from the positioning part is provided with an interference bump, and the rotation stopping piece penetrates through the limiting hole and can be pre-fixed in the limiting hole through the positioning part and the interference bump.

The anti-rotation piece can be pre-fixed in the limiting hole, and can be effectively prevented from falling off in the carrying process of transferring parts, so that the assembly process is convenient to implement.

In one possible design, the hinge assembly further comprises:

the hinge cover is fixedly arranged on the hinge cover, the hinge cover is fixedly arranged on the bottom surface of the chute bracket, and the rotation stopping piece penetrates through the limiting hole from the bottom surface of the chute bracket.

In one possible design, the rotation stop is integrally formed with the hinge cover.

The connecting strength of the rotation stopping piece and the hinge cover can be improved, and meanwhile, after the hinge cover and the chute bracket are assembled, the rotation stopping piece is fixed with the chute bracket along the trend, so that the process of independently fixing the rotation stopping piece can be omitted.

In one possible design, a portion of the swing arm abutting against the rotation stopping member is provided with an abutting portion, an abutting surface of the abutting portion faces the chute bracket, and a stop surface of the rotation stopping member is used for abutting against the abutting surface.

The swing arm is provided with a swing arm supporting part, a swing arm supporting part is arranged on the swing arm supporting part, and the swing arm supporting part is provided with a supporting part which is connected with the swing arm supporting part, and the swing arm supporting part is connected with the swing arm supporting part.

In one possible design, the first contact surface of the rotation stopping member is opposite to the stop surface, and a second contact surface in the hole wall of the limiting hole is used for being abutted to the first contact surface, and projections of the second contact surface, the first contact surface and the stop surface on the abutment surface are at least partially overlapped.

The three parts of the supporting part, the rotation stopping part and the boss are in surface contact in sequence, and the three parts have larger supporting area, so that the destructive force effect applied to the rotation stopping part, the supporting part and the boss by the swing arm under the limit working conditions of falling, vibration and the like can be weakened, the deformation of the rotation stopping part, the supporting part and the boss under the conditions can be effectively prevented, and the rotation stopping part can form an effective stop anti-falling effect on the swing arm.

In one possible design, the stop surface has a catch groove, the abutment surface has a hook portion which can extend into the catch groove, and the catch groove cooperates with the hook portion for preventing the swing arm from being disengaged from the direction away from the chute support.

When the swing arm is in a folded state, the hook-shaped part stretches into the hanging groove to form radial limitation on the swing arm, so that the anti-falling effect of the anti-falling piece on the swing arm can be effectively achieved under limiting working conditions such as falling and vibration.

In one possible design, a third contact surface in the wall of the hanging groove is abutted against the hook-shaped part, and the third contact surface is obliquely arranged relative to the stop surface; and a fourth bonding surface in the peripheral wall of the hook-shaped part is abutted against the third bonding surface, and the fourth bonding surface is obliquely arranged relative to the abutting surface.

The third bonding surface and the fourth bonding surface are both obliquely arranged, so that the hook-shaped part can smoothly extend into the hanging groove.

In one possible design, the boss has an arc-shaped supporting surface, the swing arm is provided with an arc-shaped sliding surface at a position facing one side of the chute support and adjacent to the avoidance port, the arc-shaped sliding surface is in sliding connection with the arc-shaped supporting surface, and an axis of the arc-shaped sliding surface coincides with a virtual rotation axis of the sliding part, so that the swing arm can rotate relative to the boss under the support of the boss.

The swing arm is further additionally provided with an arc-shaped sliding surface which is in sliding connection with the arc-shaped supporting surface on the boss, so that the swing arm is additionally provided with a group of sliding rails, the rotation stability and the precision of the swing arm are improved, and the folding precision of the hinge assembly is improved.

In one possible design, the boss has two arc-shaped supporting surfaces arranged side by side, and a first avoiding groove communicated with the limiting hole is arranged between the two arc-shaped supporting surfaces.

The two arc-shaped supporting surfaces arranged side by side can more stably support the swing arm to rotate; in addition, have the first groove of dodging that is used for dodging the portion of holding between two arc holding surfaces, can avoid causing the interference and blockking to the portion of holding on the swing arm.

In one possible design, the swing arm has two arcuate sliding surfaces arranged side by side with a second relief groove therebetween.

In one possible design, the sliding portion includes an upper sliding surface and a lower sliding surface, the radius of curvature of the arcuate sliding surface being smaller than the radius of curvature of the lower sliding surface.

The curvature of the arc-shaped sliding surface is half jin smaller than the curvature radius of the lower sliding surface, and the curvature radius of the arc-shaped supporting surface is also smaller than the curvature radius of the lower sliding groove surface, so that the rotation stopping piece is arranged in the orthographic projection range of the sliding groove support, the rotation stopping piece is prevented from protruding out of two sides of the sliding groove support, the whole structure of the hinge assembly is compact, and the requirements of lightening, thinning and miniaturization of electronic equipment can be met.

In one possible design, the sliding part comprises two lower sliding surfaces with the same curvature radius, and the two lower sliding surfaces are in transitional connection through a separation plane;

the guide chute comprises an upper chute surface and two lower chute surfaces with the same curvature radius, a separation space is arranged between the two lower chute surfaces, the upper chute surface is in sliding connection with the upper sliding surface, and the two lower chute surfaces are respectively in sliding connection with the two lower sliding surfaces.

The lower sliding groove surface and the lower sliding surface are discontinuous, so that the material consumption for forming the lower sliding groove surface and the lower sliding surface can be reduced, and the manufacturing cost of the swing arm and the sliding groove support is further reduced.

In a second aspect, the present application further provides an electronic device, including a first housing, a second housing, a screen, and the hinge assembly described above, where the hinge assembly is connected between the first housing and the second housing, and the screen is laid above the first housing, the hinge assembly, and the second housing.

The hinge assembly is adopted in the electronic equipment, the rotation stopping piece adopted by the hinge assembly is a component independent of the swing arm and the chute support, the rotation stopping piece can not be installed before the swing arm and the chute support are assembled, interference or blocking of the sliding part and the guide chute by the rotation stopping piece in the assembly stage can be avoided, the sliding part can be smoothly screwed into the guide chute, and the swing arm and the chute support can be assembled conveniently. Therefore, the chute bracket can adopt the integrally formed guide chute, so that the processing difficulty of the guide chute is reduced, compared with the solution of the chute splitting piece in the related art, the problem that the fit clearance between the sliding part and the guide chute is too large or too small due to poor process control can be avoided, and the user is ensured to have smoother hand feeling when folding the electronic equipment.

Drawings

Fig. 1 is a schematic diagram of a foldable mobile phone according to an embodiment of the present application;

fig. 2 is a schematic diagram of a foldable mobile phone in a flattened state according to an embodiment of the present application;

fig. 3 is a schematic diagram of a foldable mobile phone in a folded state according to an embodiment of the present application;

FIG. 4 is an assembly view of an example hinge assembly provided by an embodiment of the present application;

FIG. 5 is an exploded view of the hinge assembly of FIG. 4;

FIG. 6 is a schematic view of an example of a chute support according to an embodiment of the application;

FIG. 7 is a schematic view of an example of a swing arm according to an embodiment of the present application;

FIG. 8 is a schematic view of an example of a spin stop provided by an embodiment of the present application;

FIG. 9 is a schematic view of an installation of a spin stop provided by an embodiment of the present application;

FIG. 10 is a schematic view of an example of a hinged lid provided in an embodiment of the present application;

FIG. 11 is a partial schematic view of a hinge assembly provided in accordance with an embodiment of the present application in a flattened state;

FIG. 12 is a cross-sectional view of A-A of FIG. 11;

FIG. 13 is a partial schematic view of the hinge assembly of FIG. 11 during folding;

FIG. 14 is a cross-sectional view of the hinge assembly of FIG. 12 during folding;

FIG. 15 is a partial schematic view of the hinge assembly of FIG. 11 in a folded condition;

FIG. 16 is a cross-sectional view of the hinge assembly of FIG. 12 in a folded state;

FIG. 17 is a schematic view of another example of a spin stop provided by an embodiment of the present application;

FIG. 18 is a schematic illustration of the rotation stop of FIG. 17 pre-secured within a stop hole;

FIG. 19 is a schematic view of another example of a hinged lid provided by an embodiment of the present application;

FIG. 20 is a schematic view of the installation of the hinge cover of FIG. 19;

FIG. 21 is a partial schematic view of another example of a hinge assembly provided in accordance with an embodiment of the present application in a flattened state;

FIG. 22 is a cross-sectional view of C-C of FIG. 21;

FIG. 23 is a schematic view of the hinge assembly of FIG. 21 during folding;

FIG. 24 is a cross-sectional view of the hinge assembly of FIG. 22 during folding;

FIG. 25 is a partial schematic view of the hinge assembly of FIG. 21 in a folded condition;

FIG. 26 is a cross-sectional view of the hinge assembly of FIG. 22 in a folded state;

fig. 27 is an enlarged view at B in fig. 16;

FIG. 28 is a schematic view of another example of a spin stop provided by an embodiment of the present application;

FIG. 29 is a schematic view of another example of a swing arm provided by an embodiment of the present application;

FIG. 30 is a cross-sectional view of another example of a hinge assembly provided in accordance with an embodiment of the present application in a flattened state;

FIG. 31 is a cross-sectional view of the hinge assembly of FIG. 30 during folding;

FIG. 32 is a cross-sectional view of the hinge assembly of FIG. 30 in a folded state;

Fig. 33 is an enlarged view at D in fig. 32;

FIG. 34 is a schematic view of another example of a chute support according to an embodiment of the application;

FIG. 35 is a schematic view of another example of a swing arm provided by an embodiment of the present application;

FIG. 36 is a cross-sectional view of another example of a chute bracket and swing arm provided by an embodiment of the application;

fig. 37 is a schematic view of the swing arm of fig. 36 rotated.

Reference numerals:

11. a chute bracket; 111. a guide chute; 111a, upper chute surface; 111b, a lower runner face; 111c, dividing the space; 112. a boss; 112a, limiting holes; 112b, a second bonding surface; 112c, an arc-shaped supporting surface; 112d, a first avoidance groove; 112e, a groove is formed; 12. a hinge cover;

20. swing arms; 21. a sliding part; 211. an upper sliding surface; 212. a lower sliding surface; 213. a separation plane; 22. an avoidance port; 23. a holding portion; 231. a holding surface; 232. a hook portion; 232a, a fourth bonding surface; 24. an arc-shaped sliding surface; 25. a second avoidance groove;

30. a rotation stop member; 31. a stop surface; 32. a first bonding surface; 33. a hanging groove; 331. a third bonding surface; 34. a positioning part; 35. interference convex points;

40. a door panel; 100. a hinge assembly; 200. a first housing; 300. a second housing; 400. a screen.

Detailed Description

The following is an exemplary description of the relevant aspects of embodiments of the present application that may be referred to. It will be apparent that the described embodiments are only some, but not all, embodiments of the application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present application, it should be understood that the terms "upper," "lower," "side," "inner," "outer," "top," "bottom," and the like indicate or are based on mounting orientations or positional relationships, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

It should be further noted that, in the embodiments of the present application, the same reference numerals denote the same components or the same parts, and for the same parts in the embodiments of the present application, reference numerals may be given to only one of the parts or the parts in the drawings, and it should be understood that, for other same parts or parts, the reference numerals are equally applicable.

In the description of the present application, it should be noted that the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone.

Flexible screens, as the name implies, are flexible screens that are manufactured by replacing the screen substrate with a flexible material (e.g., plastic) from an original rigid material (e.g., glass). Flexible screens have the property of being flexible and are currently being used in electronic devices such as cell phones, tablet computers, gaming machines, wearable devices, and the like. The display screen of the electronic equipment can be increased in size on the basis of not increasing the volume, and meanwhile, the electronic equipment also has high screen occupation ratio and definition, for example, a foldable mobile phone is taken as an example, the electronic equipment can be folded to be only the size of a traditional mobile phone, can be conveniently carried, and can be flattened to be the display size of a tablet personal computer. These characteristics make foldable electronic devices highly popular with consumers.

Fig. 1 is a schematic diagram of a foldable mobile phone according to an embodiment of the present application. Fig. 2 is a schematic diagram of a foldable mobile phone in a flattened state according to an embodiment of the present application. Fig. 3 is a schematic diagram of a foldable mobile phone in a folded state according to an embodiment of the present application.

As shown in fig. 1 to 3, taking an example that the electronic device is a foldable mobile phone, the foldable mobile phone includes a first housing 200, a second housing 300, a screen 400, and a hinge assembly 100, wherein the hinge assembly 100 is connected between the first housing 200 and the second housing 300, and the screen 400 is disposed above the first housing 200, the hinge assembly 100, and the second housing 300.

Of course, the electronic device may also be a tablet computer, a gaming machine, a wearable device, etc.

The first and second cases 200 and 300 are used to carry the screen 400 while protecting the electronic device. The portions of the screen 400 at both ends are respectively adhered and fixed to the first case 200 and the second case 300 by an adhesive, and the first case 200 may be a hard case and the second case 300 may be a hard case, so that the first case 200 and the second case 300 may firmly support both ends of the screen 400.

The hinge assembly 100 may deform as the second housing 300 is folded or flattened with respect to the first housing 200 and restrict the second housing 300 from being separated from the first housing 200. Specifically, opposite side edges of the hinge assembly 100 are respectively connected to the first housing 200 and the second housing 300, and the hinge assembly 100 utilizes the rotatable characteristic thereof, so that the first housing 200 can be turned over relative to the second housing 300, and the first housing 200 is folded, flattened, or a state between the folding and the flattening relative to the second housing 300.

The first casing 200 and the second casing 300 can be mutually folded or flattened, so that the foldable mobile phone provided by the embodiment of the application has multiple modes, and can meet the use requirements of users in different scenes. For example, the first case 200 and the second case 300 may be folded with each other, so that the screens 400 may be attached to each other, so that the foldable mobile phone is switched to the closed mode, and at this time, the foldable mobile phone has a smaller volume, thereby being convenient for a user to store and carry the same.

The first housing 200 and the second housing 300 may also be relatively unfolded, for example, an included angle of 90-120 degrees is formed between the two, so that the foldable mobile phone is switched to a use mode capable of being placed on a desktop. At this time, the first housing 200 and the screen 400 thereon can face the user, the second housing 300 is placed on a placement surface of a desk, or the like, and the second housing 300 has a function similar to a weight base, so that the placement stability of the foldable mobile phone can be ensured.

The first housing 200 and the second housing 300 may also be relatively flattened, for example, an included angle of 180 degrees is formed between the first housing and the second housing, so that a large screen display can be realized, richer information can be provided for the user, and better use experience is brought to the user.

It can be understood that when the user holds the foldable mobile phone, the position of the earphone module of the foldable mobile phone can be defined as the upper side of the foldable mobile phone, the position of the microphone module of the foldable mobile phone can be defined as the lower side of the foldable mobile phone, and the two sides of the foldable mobile phone held by the left and right hands of the user can be defined as the left and right sides of the foldable mobile phone.

In some embodiments of the present application, the first housing 200 and the second housing 300 are arranged upside down so that the foldable mobile phone can be folded upside down.

In other embodiments of the present application, the first housing 200 and the second housing 300 are arranged in a side-to-side configuration such that the foldable cellular phone can be folded in half.

Optionally, the hinge assembly 100 also serves to support the screen 400 to prevent the screen 400 from collapsing. Specifically, the hinge assembly 100 is provided with a screen 400 supporting assembly, which can support the screen 400 while ascending along with the flattening of the hinge assembly 100, and can also descend to leave a receiving space for the screen 400 along with the folding of the hinge assembly 100.

Alternatively, the screen 400 may be a flexible screen that is foldable as a whole, or the screen 400 may be a combination of a flexible screen that is foldable in a central region and rigid screens in both end portions, which is not limiting to the present application.

Alternatively, the screen 400 may be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini-led (micro organic light-emitting diode) display, a mini-organic led (micro organic light-emitting diode) display, a quantum dot led (quantum dotlight emitting diodes, QLED) display, or the like.

Optionally, the foldable mobile phone may further include a plurality of modules, and the plurality of modules may be received inside the first and second housings 200 and 300. The plurality of modules of the foldable mobile phone may include, but are not limited to, a motherboard, a processor, a memory, a battery, a camera module, an earpiece module, a speaker module, a microphone module, an antenna module, a sensor module, etc., and the number, type, location, etc. of the modules of the foldable mobile phone are not particularly limited.

After the foldable mobile phone is folded, the flexible screen needs to be kept in a circular arc shape with a certain curvature radius in the shell so as to prevent the flexible screen from being permanently deformed or losing function. However, this causes a difference in length between the folding path of the mobile phone housing and the folding path of the flexible screen, and a specially designed hinge is required to compensate for this difference.

At present, a hinge with a virtual rotation shaft is generally used to compensate the path difference between the housing and the flexible screen when the flexible screen is folded. The virtual rotating shaft is composed of the arc sliding groove and the arc sliding block which are respectively arranged on the sliding groove support and the swing arm, and the virtual rotating shaft can enable the swing arm to rotate relative to the sliding groove support and simultaneously generate displacement relative to the sliding groove support, so that folding path difference between the shell and the flexible screen can be compensated.

In order to prevent the situation that a user excessively rotates the swing arm to cause the arc sliding block to deviate from the arc sliding groove or the sliding block to deviate from the groove under the limiting working conditions such as falling, vibration and the like, a rotation stopping structure is arranged on the motion track of the virtual rotating shaft on the current hinge assembly. However, if the rotation stopping structure is directly formed on the chute bracket and the swing arm, the arc sliding block is inevitably difficult to screw into the arc chute during assembly, so that the assembly of the chute bracket and the swing arm is affected.

In order to solve the problem, the industry generally adopts a solution of splitting a chute, that is, an arc chute is formed by splicing an upper bracket and a lower bracket, an arc slider of a swing arm is firstly mounted on a lower bracket, then the upper bracket is mounted on the lower bracket, so that the arc slider is clamped in the arc chute enclosed by the upper bracket and the lower bracket, and finally the two brackets are fixed by welding and the like, so that the assembly of the chute bracket and the swing arm is completed.

However, because the arc chute is formed by splicing the upper bracket and the lower bracket, the requirement on the processing precision of the cambered surface on each bracket is higher, and in addition, the requirement on the process control of the assembly precision of the two brackets is higher, if the process control is poor, the arc chute and the arc sliding block cannot be perfectly matched, and various problems are caused. For example, if the fit clearance between the arc chute and the arc slide block is too small, the swing arm is easy to generate defects such as jamming and shaking in the rotating process; if the fit clearance between the arc chute and the arc sliding block is too large, the situation that the hinge joint of the foldable mobile phone is easy to shake can occur. No matter which kind of situation appears, the folding hand feeling of the user when using the hinge assembly can be influenced, and the situation can be effectively avoided by adopting the integrated arc chute.

In summary, how to optimize the design of the rotation stopping structure, so that the swing arm and the chute bracket with the integrated arc chute can be assembled conveniently, is one of the problems to be solved in the industry.

In order to solve the technical problems, the application provides a hinge assembly, which can avoid interference or blocking of a sliding part and a guide chute by a rotation stopping piece in an assembly stage by additionally arranging the rotation stopping piece independent of a swing arm and a chute bracket, and further can adopt an integrated guide chute, so that the sliding part can be directly screwed into the guide chute.

The hinge assembly provided by the present application will now be described in detail with reference to the accompanying drawings.

Fig. 4 is an assembly view of an example of a hinge assembly 100 according to an embodiment of the present application. Fig. 5 is an exploded view of the hinge assembly 100 of fig. 4. Fig. 6 is a schematic view of an example of a chute support 11 according to an embodiment of the present application. Fig. 7 is a schematic diagram of an example of a swing arm 20 according to an embodiment of the present application. Here, (a) and (b) in fig. 7 are swing arms 20 in both the forward and reverse viewing angles. Fig. 8 is a schematic view showing an example of the rotation stopper 30 according to the embodiment of the present application. In fig. 8, (a) and (b) are rotation stoppers 30 in both the forward and reverse directions. Fig. 9 is a schematic view of the installation of the rotation stopper 30 provided in the embodiment of the present application.

As shown in fig. 4 to 9, a hinge assembly 100 according to an embodiment of the present application includes a chute bracket 11, a swing arm 20, and a rotation stopper 30.

The chute bracket 11 has an integrally formed guide chute 111.

The swing arm 20 is provided with a sliding part 21 at a position corresponding to the guide chute 111, and the swing arm 20 is slidably connected to the guide chute 111 through the sliding part 21, so that the swing arm 20 can rotate relative to the chute bracket 11 to switch between a flattened state and a folded state. In addition, the swing arm 20 is also provided with a relief opening 22.

The rotation stopping member 30 is connected with the chute bracket 11 and penetrates through the avoiding opening 22, and is used for abutting against the swing arm 20 to prevent the swing arm 20 from continuing to rotate when the swing arm 20 rotates to a folded state.

When the hinge assembly 100 provided by the embodiment of the application is assembled, the sliding part 21 is normally screwed into the guide chute 111 to complete the assembly of the swing arm 20 and the chute bracket 11; as shown in fig. 7, after the assembly of the swing arm 20 and the chute support 11 is completed, the swing arm 20 is rotated to a flattened state, and the rotation stopper 30 is connected to the chute support 11 after being penetrated through the escape opening 22, so that the rotation stopper 30 is mounted on the chute support 11 to complete the assembly of the rotation stopper 30, the swing arm 20, and the chute support 11.

It can be seen that, in the hinge assembly 100 according to the embodiment of the present application, since the rotation stop member 30 is a component independent from the swing arm 20 and the chute support 11, the rotation stop member 30 may not be installed before the swing arm 20 and the chute support 11 are assembled, so that interference or blocking of the sliding portion 21 and the guide chute 111 by the rotation stop member 30 during the assembly stage is avoided, and the sliding portion 21 can be smoothly screwed into the guide chute 111, so that the swing arm 20 and the chute support 11 are conveniently assembled. Therefore, the chute bracket 11 in the embodiment of the application can adopt the integrally formed guide chute 111, thereby reducing the processing difficulty of the guide chute 111, and compared with the solution of the chute splitting piece in the related art, the problem that the fit clearance between the sliding part 21 and the guide chute 111 is too large or too small due to poor process control can be avoided, and the folding feel of a user when using the hinge assembly 100 is ensured.

Alternatively, the rotation stop 30 may not be fixedly connected to the chute support 11, so long as it is capable of interfering with or blocking further rotation of the swing arm 20. For example, in the embodiment described below, the rotation stopping member 30 is directly placed in the limiting hole 112a, so that the rotation stopping member 30 can be slightly movably connected with respect to the chute support 11, and when the swing arm 20 rotates to abut against the rotation stopping member 30, the rotation stopping member 30 is pushed to abut against the hole wall adjacent to the outside of the chute support 11 in the limiting hole 112a, thereby supporting the rotation stopping member 30 through the hole wall, and assisting the rotation stopping member 30 to stop the swing arm 20.

Alternatively, the rotation stop 30 may be fixedly connected directly to the chute bracket 11; alternatively, the rotation stop member 30 may be fixedly connected to the chute support 11 in an indirect manner by an intermediate member, such as the hinge cover 12 added in the embodiments described below, the rotation stop member 30 being fixed to the hinge cover 12, and the hinge cover 12 being further fixed to the chute support 11, such that the rotation stop member 30 is fixedly connected to the chute support 11 in an indirect manner, as described in more detail below with reference to the embodiments described below.

Alternatively, the rotation stopper 30 may be directly fixed to the chute bracket 11 by screwing, bolting, bonding, welding, or the like.

Alternatively, the area where the rotation stopper 30 and the swing arm 20 abut each other may be a point contact, a line contact, or a surface contact.

Alternatively, the rotation stop member 30 may be disposed through the relief opening 22 from top to bottom; alternatively, when the chute bracket 11 is provided with a through hole opposite to the escape opening 22, the rotation stopper 30 may be inserted into the escape opening 22 from bottom to top.

Alternatively, the two swing arms 20 may be arranged on the chute bracket 11 in a facing manner; alternatively, the two swing arms 20 may be arranged offset from each other on the chute support 11.

Specifically, as shown in fig. 9, the two swing arms 20 are arranged on the chute support 11 in a facing manner, so that the occupation range of the swing arms 20 in the length direction of the chute support 11 can be reduced, and on the premise that the length of the chute support 11 is not changed, the arrangement space saved by the swing arms 20 can be saved for other functional parts of the hinge assembly 100, so that the structural design of the hinge assembly 100 is more flexible and changeable, and the optimization of the structural design is facilitated.

Fig. 10 is a schematic view of an example of a hinge cover 12 according to an embodiment of the present application.

Optionally, in order to protect the chute boot 11 and also to achieve a dust-proof function after the hinge assembly 100 is assembled to the electronic device, as shown in fig. 9 and 10, in one embodiment of the present application, the hinge assembly 100 may further include a hinge cover 12, where the hinge cover 12 is fixedly connected to the bottom surface of the chute boot 11.

Alternatively, the outer side of the hinge cover 12 may be curved.

Alternatively, in the case where the rotation stopper 30 is a separate part, the hinge cover 12 and the chute bracket 11 may also be integrally formed.

Alternatively, the chute bracket 11 and the hinge cover 12 may be secured together by bolting, bonding, welding, fastening, or the like. Like this for spout support 11 splices the equipment with hinge lid 12 with the modularization mode, and this design mode can reduce the processing degree of difficulty of direct shaping hinge lid 12 and spout support 11, has avoided simultaneously because the processing mistake of individual direction spout 111 causes the scrapping of whole hinge lid 12, has reduced thing damage and cost, has improved the yields of hinge assembly 100.

Alternatively, as shown in fig. 4-5, the hinge assembly 100 may further include a door panel 40, the door panel 40 acting as a connection carrier between the hinge assembly 100 and the housing of the electronic device.

Specifically, one side of the door plate 40 has a plurality of pin holes, and one end of the swing arm 20 far from the sliding portion 21 also has a plurality of pin holes, and the pin shaft sequentially passes through the pin holes of the door plate 40 and the pin holes of the swing arm 20, so that the door plate 40 and the swing arm 20 are in rotational connection.

Optionally, the hinge assembly 100 further includes a folding synchronization assembly for driving the door panel 40 to rotate synchronously with respect to the chute bracket 11, and the folding synchronization assembly mainly includes two gears connected to the door panel 40, and two idler gears sequentially meshed between the two gears.

When the folding synchronization assembly works, any one of the two door panels 40 is driven to rotate, torque is sequentially transmitted to the other gear through the two idler gears, so that the other gear is driven to synchronously and reversely rotate, and further synchronous rotation of the two door panels 40 relative to the chute bracket 11 and synchronous rotation of the two shells of the electronic equipment are realized.

Optionally, in order to enable the folding synchronization assembly to realize damping and hovering effects on the door panel 40 when rotating, the folding synchronization assembly further includes a damping member, which can increase damping feel for rotation of the door panel 40, and in addition, can also position a rotation angle of the door panel 40 to hover, thereby further improving practicability of the hinge assembly 100 and enabling the hinge assembly to meet an application scenario requiring multi-angle positioning.

The movement process of the hinge assembly 100 in this embodiment is as follows.

Fig. 11 is a partial schematic view of a hinge assembly 100 provided in accordance with an embodiment of the present application in a flattened state. Fig. 12 is a cross-sectional view of the door panel 40 A-A of fig. 11 (omitted).

As shown in fig. 11 to 12, the hinge assembly 100 of the present embodiment is in a flat state, and both swing arms 20 are in a horizontal state.

Fig. 13 is a partial schematic view of the hinge assembly 100 of fig. 11 during folding. Fig. 14 is a cross-sectional view of the hinge assembly 100 of fig. 12 during folding.

As shown in fig. 13 to 14, when the hinge assembly 100 is folded, the sliding portion 21 of the swing arm 20 slides along the groove wall of the guide chute 111, and the swing arm 20 rotates relative to the chute bracket 11 about the virtual rotation axis formed by the sliding portion 21 and the guide chute 111, so that the swing arm 20 rotates from the flattened state to the folded state.

Fig. 15 is a partial schematic view of the hinge assembly 100 of fig. 11 in a folded state. Fig. 16 is a cross-sectional view of the hinge assembly 100 of fig. 12 in a folded state.

As shown in fig. 15 to 16, when the swing arm 20 is rotated to abut against the rotation stop member 30 in the folded state of the hinge assembly 100 in this embodiment, the rotation stop member 30 limits the swing arm 20 from further rotation, so that the sliding portion 21 of the swing arm 20 can be prevented from being separated from the guide chute 111 of the chute bracket 11, so that the swing arm 20 has an anti-separation function with respect to the chute bracket 11.

In one embodiment of the present application, the chute bracket 11 has a limiting hole 112a into which the rotation stop 30 is inserted.

In this embodiment, the chute bracket 11 is provided with a limiting hole 112a for inserting the rotation stop member 30, and the rotation stop member 30 provides a mounting hole through the limiting hole 112a.

Alternatively, the rotation stopping member 30 may be placed in the limiting hole 112a and slightly movable relative to the chute support 11, and when the swing arm 20 rotates to abut against the rotation stopping member 30, the rotation stopping member 30 is pushed to abut against a hole wall adjacent to the outside of the chute support 11 in the limiting hole 112a, so that the rotation stopping member 30 is supported by the hole wall, and the rotation stopping member 30 is assisted to stop the swing arm 20.

Optionally, the rotation stop 30 is fixedly mounted within the limit aperture 112 a. For a more detailed description, reference is made to the examples described below.

Alternatively, the limiting aperture 112a may be a through hole or a blind hole, so long as the rotation stop 30 may be placed within the limiting aperture 112 a.

In order to improve the connection strength between the rotation stopping member 30 and the chute bracket 11 and further improve the stopping and anti-disengaging effects of the rotation stopping member 30 on the swing arm 20, as shown in fig. 6, in an embodiment provided by the present application, the chute bracket 11 is provided with a boss 112, and a limiting hole 112a is located on the boss 112.

The boss 112 in this embodiment has a certain height, and the upper surface is provided with a limiting hole 112a for inserting the rotation stop member 30, and the hole wall of the limiting hole 112a near the outer side is abutted against the rotation stop member 30. As shown in fig. 15, when the swing arm 20 rotates to the folded state, the wall of the swing arm 20, the rotation stopping member 30 and the hole wall of the limiting hole 112a (i.e. the boss 112) are sequentially abutted, so that the rotation stopping member 30 transfers a part of the acting force of the swing arm 20 to the boss 112, thereby avoiding that the acting force of the swing arm 20 is concentrated at the joint of the rotation stopping member 30 and the chute bracket 11, and preventing the breakage of the rotation stopping member 30.

In this embodiment, the boss 112 additionally supports the rotation stopping member 30, so that the stopping and anti-falling effects of the rotation stopping member 30 on the swing arm 20 are improved. Compared with the limit hole 112a formed by the chute bracket 11, the limit hole 112a formed by the boss 112 is deeper, so that the limit hole has larger abutting area with the rotation stop member 30, and the stop strength of the rotation stop member 30 is improved.

Alternatively, the boss 112 is located in the middle of the two guide runners 111; alternatively, the boss 112 is located adjacent to either of the two guide runners 111.

In one embodiment of the present application, the rotation stop 30 is fixedly mounted within the limiting aperture 112 a.

In this embodiment, the rotation stopping member 30 is fixedly connected with the hole wall of the limiting hole 112a, so that the connection area of the rotation stopping member 30 and the chute bracket 11 is increased, the connection strength of the rotation stopping member 30 and the chute bracket 11 is improved, and the stop and anti-falling effect of the rotation stopping member 30 on the swing arm 20 is further improved.

Alternatively, the fixed connection between the rotation stop member 30 and the wall of the limiting hole 112a may be implemented in various manners, such as screwing, bonding, welding, interference connection, etc.

Specifically, the outer wall of the rotation stopping member 30 may be provided with an external thread, and the limiting hole 112a is a threaded hole, so that the rotation stopping member 30 and the limiting hole 112a are fixedly connected in a screwing manner.

Specifically, after the rotation stopping member 30 is inserted into the limiting hole 112a, the rotation stopping member 30 is bonded to the wall of the limiting hole 112a, and the bonding may be implemented in two ways: one is to adhere an adhesive or double-sided tape to the adhesion position of the rotation stop member 30 and/or the limiting hole 112a in advance, and then adhere the rotation stop member 30 and the wall of the limiting hole 112a in sequence; the other is that the rotation stopping piece 30 is inserted and kept in the limiting hole 112a by a mechanical arm, and the adhesive is injected into a gap between the rotation stopping piece 30 and the limiting hole 112a by a dispensing device.

Specifically, the external dimension of the rotation stopping member 30 may be slightly larger than the aperture of the limiting hole 112a, and the rotation stopping member 30 is pressed into the limiting hole 112a by knocking or hydraulic pressure, so that the rotation stopping member 30 and the limiting hole 112a are in interference fit, and further fastening connection of the two is achieved.

As further shown in fig. 8, in one embodiment of the present application, one end of the rotation stop 30 is provided with a positioning portion 34 for defining the insertion depth of the rotation stop 30.

In this embodiment, in order to improve the precision and efficiency of the hinge assembly, the positioning portion 34 may be machined on the rotation stop member 30 in advance, and the positioning portion may be directly inserted into the limiting hole 112a during the assembly process.

Alternatively, when the limiting hole 112a is a blind hole, the insertion depth of the rotation stop member 30 may be positioned by matching the bottom surface of the rotation stop member 30 with the bottom surface of the limiting hole 112 a.

As further shown in fig. 6, in one embodiment of the present application, the aperture of the limiting hole 112a has a notch 112e for defining the position of the positioning portion 34.

In this embodiment, the positioning portion 34 may be inserted into the notch 112e to further limit the rotation stop member 30 to prevent the rotation stop member from shaking.

Alternatively, the notch 112e may be formed in the boss 112.

Alternatively, the opening of the limiting hole 112a may not be provided with the notch 112e, and the positioning portion 34 is overlapped on the boss 112.

Fig. 17 is a schematic view of another example of a rotation stop 30 provided in an embodiment of the present application. Fig. 18 is a schematic view of the rotation stop 30 of fig. 17 pre-secured within the limiting aperture 112 a.

As shown in fig. 17 to 18, in one embodiment of the present application, a peripheral wall of the end of the rotation stopping member 30 away from the positioning portion 34 has an interference bump 35, the rotation stopping member 30 penetrates through the limiting hole 112a, and the rotation stopping member 30 can be pre-fixed in the limiting hole 112a through the positioning portion 34 and the interference bump 35.

The interference bump 35 in this embodiment is a bump protruding from the surface of the rotation stopping member 30, through which the rotation stopping member 30 and the limiting hole 112a can form an interference fit, the rotation stopping member 30 is pressed into and penetrates through the limiting hole 112a by knocking or the like, and the positioning portion 34 and the interference bump 35 are respectively located at the openings at the upper end and the lower end of the limiting hole 112a, so that the rotation stopping member 30 can be limited in the limiting hole 112 a.

Because before the rotation stopping member 30 and the limiting hole 112a are thoroughly fixed by bonding, welding or other modes, the parts are transferred to the dispensing station or the welding station, in this embodiment, the positioning portions 34 and the interference protruding points 35 are arranged at the upper and lower ends of the rotation stopping member 30, so that the rotation stopping member 30 can be pre-fixed in the limiting hole 112a, and the rotation stopping member 30 can be effectively prevented from falling off in the transferring process of transferring the parts, thereby facilitating the implementation of the assembly process.

Alternatively, the rotation stopping member 30 and the limiting hole 112a may not need to be completely fixed by bonding, welding, or the like, but the rotation stopping member 30 may be limited in the limiting hole 112a only by the positioning portion 34 and the interference bump 35, so that the rotation stopping member 30 may slightly move relative to the chute bracket 11.

As described above, the rotation stop 30 may be fixedly connected to the chute support 11 through an intermediate member in an indirect manner, that is, in one embodiment of the present application, the hinge assembly 100 further includes the hinge cover 12, the rotation stop 30 is fixedly mounted on the hinge cover 12, the hinge cover 12 is fixedly mounted on the bottom surface of the chute support 11, and the rotation stop 30 penetrates the limiting hole 112a from the bottom surface of the chute support 11.

In the hinge assembly 100 provided in this embodiment, when assembling, the rotation stop member 30 is first fixedly mounted on the hinge cover 12; the sliding part 21 is normally screwed into the guide chute 111 to complete the assembly of the swing arm 20 and the chute bracket 11; after the assembly of the swing arm 20 and the chute support 11 is completed, the swing arm 20 is rotated to a flattened state, the chute support 11 is mounted on the hinge cover 12 from top to bottom, and the rotation stop member 30 is penetrated through the limit hole 112 a; finally, the hinge cover 12 is fixedly connected with the chute bracket 11, so that the assembly of the swing arm 20, the chute bracket 11, the rotation stopping piece 30 and the hinge cover 12 is completed.

Alternatively, the rotation stop 30 may be fixedly coupled to the hinge cover 12 by threaded connection, bolting, bonding, welding, or the like.

Fig. 19 is a schematic view of another example of a hinged lid 12 provided in an embodiment of the present application. Fig. 20 is a schematic view of the installation of the hinge cover 12 of fig. 19.

In one embodiment provided by the present application, the rotation stop 30 is integrally formed with the hinge cover 12, as shown in fig. 19.

When the hinge assembly 100 provided in this embodiment is assembled, the sliding portion 21 is first screwed into the guiding chute 111 normally, so as to complete the assembly of the swing arm 20 and the chute bracket 11; after the assembly of the swing arm 20 and the chute support 11 is completed, the swing arm 20 is rotated to a flattened state, the chute support 11 is mounted on the hinge cover 12 from top to bottom, or as shown in fig. 20, the hinge cover 12 is mounted at the bottom of the chute support 11 from bottom to top, and the rotation stopper 30 is penetrated by the limit hole 112 a; finally, the hinge cover 12 is fixedly connected with the chute bracket 11, so that the assembly of the swing arm 20, the chute bracket 11 and the hinge cover 12 is completed.

In the hinge assembly 100 provided in this embodiment, since the rotation stop member 30 on the hinge cover 12 is a component independent from the swing arm 20 and the chute support 11, the hinge cover 12 may not be installed before the swing arm 20 and the chute support 11 are assembled, so that the rotation stop member 30 may avoid interference or blocking to the sliding portion 21 and the guide chute 11 during the assembly stage, and the sliding portion 21 may be smoothly screwed into the guide chute 111, so that the swing arm 20 and the chute support 11 may be assembled conveniently. Therefore, the chute bracket 11 can adopt the integrally formed guide chute 111, thereby reducing the processing difficulty of the guide chute 111, avoiding the problem of too large or too small fit clearance between the sliding part 21 and the guide chute 111 caused by poor process control, and ensuring the folding hand feeling of the user when using the hinge assembly 100.

In addition, the hinge cover 12 and the rotation stopping member 30 are integrally formed in this embodiment, so that the connection strength between the rotation stopping member 30 and the hinge cover 12 can be improved, and at the same time, after the hinge cover 12 and the chute support 11 are assembled, the rotation stopping member 30 is also fixed with the chute support 11, so that the process of separately fixing the rotation stopping member 30 can be omitted in this embodiment.

Fig. 21 is a partial schematic view of another example of a hinge assembly 100 according to an embodiment of the present application in a flattened state. Fig. 22 is a cross-sectional view of C-C of fig. 21.

As shown in fig. 21 to 22, the hinge assembly 100 of the present embodiment is in a flat state, and both swing arms 20 are in a horizontal state.

Fig. 23 is a schematic view of the hinge assembly 100 of fig. 21 during folding. Fig. 24 is a cross-sectional view of the hinge assembly 100 of fig. 22 during folding.

As shown in fig. 23 to 24, when the hinge assembly 100 is folded, the sliding portion 21 of the swing arm 20 slides along the groove wall of the guide chute 111, and the swing arm 20 rotates relative to the chute bracket 11 about the virtual rotation axis formed by the sliding portion 21 and the guide chute 111, so that the swing arm 20 rotates from the flattened state to the folded state.

Fig. 25 is a partial schematic view of the hinge assembly 100 of fig. 21 in a folded state. Fig. 26 is a cross-sectional view of the hinge assembly 100 of fig. 22 in a folded state.

As shown in fig. 25-26, when the swing arm 20 is rotated to abut against the rotation stop member 30 in the folded state of the hinge assembly 100 in this embodiment, the rotation stop member 30 limits the swing arm 20 from further rotation, so that the sliding portion 21 of the swing arm 20 can be prevented from being separated from the guide chute 111 of the chute bracket 11, so that the swing arm 20 has an anti-separation function with respect to the chute bracket 11.

Fig. 27 is an enlarged view at B in fig. 16.

As described above, the contact area between the rotation stop 30 and the swing arm 20 may be point contact, line contact or surface contact, and the contact effect with surface contact is better, that is, as shown in fig. 7 (b) and fig. 8 (b), and as shown in fig. 27, in an embodiment provided by the present application, the contact area between the swing arm 20 and the rotation stop 30 is provided with the contact portion 23, the contact surface 231 of the contact portion 23 faces the chute bracket 11, and the stop surface 31 of the rotation stop 30 is used to contact the contact surface 231.

In this embodiment, the abutting surface 231 is formed on the abutting portion 23, and the stop surface 31 for abutting against the abutting surface 231 is formed on the rotation stopping member 30, so that the rotation stopping member 30 has a larger abutting area when the rotation stopping member 20 is limited to rotate, the pressure intensity of the rotation stopping member 30 or the abutting portion 23 can be reduced, the destructive effect of the rotation stopping member 30 or the abutting portion 23 exerted by the rotation stopping member 20 under the limiting working conditions such as falling and vibration is weakened, the deformation of the rotation stopping member 30 or the abutting portion 23 can be effectively prevented, and the effective stop anti-falling effect of the rotation stopping member 30 on the rotation stopping member 20 is ensured.

Optionally, the abutment 23 is located on the swing arm 20 adjacent to the relief opening 22.

It should be noted that the structures of the rotation stop member 30 and the abutting portion 23 in the present embodiment are not limited to whether the rotation stop member 30 is fixedly connected to the hinge cover 12, that is, the structures of the rotation stop member 30 and the abutting portion 23 may also be used in the embodiment of fig. 21.

In the foregoing embodiment, the limiting hole 112a is adjacent to the hole wall outside the chute bracket 11 and abuts against the rotation stopping piece 30, so that the rotation stopping piece 30 transfers a part of the acting force of the swing arm 20 to the boss 112, so that the acting force of the swing arm 20 is prevented from being concentrated at the joint of the rotation stopping piece 30 and the chute bracket 11, and the breakage of the rotation stopping piece 30 is prevented, and in order to achieve this effect, as shown in fig. 27, in one embodiment provided by the application, the first abutting surface 32 of the rotation stopping piece 30 is opposite to the stop surface 31, the second abutting surface 112b in the hole wall of the limiting hole 112a is used for abutting against the first abutting surface 32, and the projections of the second abutting surface 112b, the first abutting surface 32 and the stop surface 31 on the abutting surface 231 are at least partially overlapped.

In this embodiment, the abutting portion 23, the rotation stopping member 30 and the boss 112 sequentially achieve surface contact, and have a larger abutting area, so that the destructive force effect applied to the rotation stopping member 30, the abutting portion 23 and the boss 112 by the swing arm 20 under the limit working conditions such as falling and vibration can be weakened, deformation of the rotation stopping member 30, the abutting portion 23 and the boss 112 can be effectively prevented, and the rotation stopping member 30 can form an effective stop and anti-falling effect on the swing arm 20.

Note that, the structures of the rotation stop 30, the abutment 23, and the limiting hole 112a in the present embodiment are not limited to whether the rotation stop 30 is fixedly connected to the hinge cover 12, that is, the structures of the rotation stop 30, the abutment 23, and the limiting hole 112a may also be used in the embodiment of fig. 21.

Fig. 28 is a schematic view of another example of a rotation stop 30 provided in an embodiment of the present application. Fig. 29 is a schematic view of another example of the swing arm 20 according to the embodiment of the present application.

As shown in fig. 28 to 29, in one embodiment of the present application, the stop surface 31 has a hanging groove 33, and the abutment surface 231 has a hook 232 that can extend into the hanging groove 33, and the hanging groove 33 cooperates with the hook 232 to prevent the swing arm 20 from being separated from the direction away from the chute bracket 11.

In this embodiment, the swing arm 20 not only can be limited to excessively rotate by the rotation stopping member 30, but also the hanging groove 33 is formed on the stopping surface 31 and the hook 232 is disposed on the supporting surface 231, so that when the swing arm 20 is in the folded state, the hook 232 extends into the hanging groove 33 to radially limit the swing arm 20, and thus the effective stopping and anti-falling effects of the rotation stopping member 30 on the swing arm 20 under the limiting conditions such as falling and vibration are further enhanced.

It should be noted that the hook 232 and hanging slot 33 structure in this embodiment is not limited to the fixed connection of the rotation stop 30 with the hinge cover 12, that is, the hook 232 and hanging slot 33 structure may be used in the embodiment of fig. 21.

Fig. 30 is a cross-sectional view of another example of a hinge assembly 100 according to an embodiment of the present application in a flattened state.

As shown in fig. 30, the hinge assembly 100 in the present embodiment is in a flat state, with both swing arms 20 in a horizontal state.

Fig. 31 is a cross-sectional view of the hinge assembly 100 of fig. 30 during folding.

As shown in fig. 31, when the hinge assembly 100 is folded, the sliding portion 21 of the swing arm 20 slides along the groove wall of the guide chute 111, and the swing arm 20 rotates relative to the chute bracket 11 about the virtual rotation axis formed by the sliding portion 21 and the guide chute 111, so that the swing arm 20 rotates from the flattened state to the folded state.

Fig. 32 is a cross-sectional view of the hinge assembly 100 of fig. 30 in a folded state. Fig. 33 is an enlarged view at D in fig. 32.

As shown in fig. 32 to 33, when the swing arm 20 rotates to abut against the rotation stop member 30 in the folded state of the hinge assembly 100 in this embodiment, the rotation stop member 30 limits the swing arm 20 from further rotation, so that the sliding portion 21 of the swing arm 20 can be prevented from being separated from the guide chute 111 of the chute bracket 11, and the hook portion 232 extends into the hanging slot 33 in a proper direction, so as to form a radial limitation on the swing arm 20, so that the rotation stop member 30 can form an effective stop and anti-separation effect on the swing arm 20.

Since the swing arm 20 drives the hook 232 to extend into the hanging slot 33 in a rotating manner, in order to enable the hook 232 to extend into the hanging slot 33 smoothly, interference between the hook 232 and the notch of the hanging slot 33 is avoided, and in one embodiment of the present application, a third abutting surface 331 in the slot wall of the hanging slot 33 abuts against the hook 232, and the third abutting surface 331 is inclined relative to the stop surface 31; the fourth contact surface 232a of the peripheral wall of the hook 232 contacts the third contact surface 331, and the fourth contact surface 232a is inclined with respect to the contact surface 231.

In this embodiment, the third bonding surface 331 and the fourth bonding surface 232a are both inclined, so that the hook portion 232 can smoothly extend into the hanging groove 33.

Fig. 34 is a schematic view of another example of the chute support 11 according to the embodiment of the application. Fig. 35 is a schematic view of another example of the swing arm 20 according to the embodiment of the present application.

34-35, in one embodiment provided by the present application, the boss 112 has an arc-shaped supporting surface 112c, the swing arm 20 is provided with an arc-shaped sliding surface 24 at a side facing the chute support 11 and adjacent to the avoiding opening 22, the arc-shaped sliding surface 24 is slidably connected with the arc-shaped supporting surface 112c, and an axis of the arc-shaped sliding surface 24 coincides with a virtual rotation axis of the sliding portion 21, so that the swing arm 20 can rotate relative to the boss 112 under the support of the boss 112.

In this embodiment, the swing arm 20 is slidingly connected with the guide chute 111 except the sliding portions 21 on both sides, and the swing arm 20 is additionally provided with the arc-shaped sliding surface 24, and the arc-shaped sliding surface 24 is slidingly connected with the arc-shaped supporting surface 112c on the boss 112, so that the number of a group of sliding rails is increased for the swing arm 20, and the rotation stability and precision of the swing arm 20 are improved, and the folding precision of the hinge assembly 100 is improved.

As further shown in fig. 34, in one embodiment of the present application, the boss 112 has two arc-shaped supporting surfaces 112c arranged side by side, and a first avoiding groove 112d communicating with the limiting hole 112a is provided between the two arc-shaped supporting surfaces 112 c.

The first avoiding groove 112d is configured to provide a rotation avoiding space for the abutment 23 when the swing arm 20 rotates.

In the present embodiment, two arc-shaped support surfaces 112c arranged side by side can more stably support the swing arm 20 for rotation; in addition, the first avoidance groove 112d for avoiding the holding portion 23 is provided between the two arc-shaped supporting surfaces 112c, so that interference and blocking of the holding portion 23 on the swing arm 20 can be avoided.

Alternatively, the arcuate sliding surface 24 may be one, slidably coupled to the two arcuate support surfaces 112 c.

Alternatively, the number of arcuate sliding surfaces 24 may correspond to the number of arcuate supporting surfaces 112 c. That is, in one embodiment of the present application, as further shown in fig. 35, the swing arm 20 has two arc-shaped sliding surfaces 24 arranged side by side, and a second avoiding groove 25 is provided between the two arc-shaped sliding surfaces 24.

Wherein the second escape groove 25 is used for providing an escape space for the rotation stop member 30 to prevent the rotation stop member 30 from blocking the rotation of the swing arm 20.

In this embodiment, the second avoidance groove 25 for avoiding the rotation stop member 30 is provided between the two arc-shaped sliding surfaces 24, so that the swing arm 20 can be prevented from being interfered and blocked by the rotation stop member 30 in the unfolded state.

Fig. 36 is a cross-sectional view of another example of the chute support 11 and swing arm 20 provided in the embodiment of the application. Fig. 37 is a schematic view of the swing arm 20 of fig. 36 when rotated. Wherein (a) in fig. 37 is a schematic view of the swing arm 20 in a flattened state;

fig. 37 (b) is a schematic view of the swing arm 20 during folding; fig. 37 (c) is a schematic view of the swing arm 20 in a folded state.

As shown in fig. 36 to 37, in one embodiment provided by the present application, the sliding portion 21 includes an upper sliding surface 211 and a lower sliding surface 212, and the radius of curvature r1 of the arc-shaped sliding surface 24 is smaller than the radius of curvature r2 of the lower sliding surface 212.

In this embodiment, as shown in fig. 36-37, the curvature radius r1 of the arc sliding surface 24 is smaller than the curvature radius r2 of the lower sliding surface 212, and the curvature radius of the corresponding arc supporting surface 112c is also smaller than the curvature radius of the lower sliding groove surface 111b, which will be described later, so that the rotation stopping member 30 is arranged in the orthographic projection range of the sliding groove bracket 11, and the rotation stopping member 30 is prevented from protruding out of two sides of the sliding groove bracket 11, so that the whole structure of the hinge assembly 100 is compact, and the requirements of light weight and miniaturization of the electronic device can be met.

In order to reduce the manufacturing cost of the swing arm 20 and the chute bracket 11, as shown in fig. 34 to 35, in an embodiment provided by the present application, the sliding portion 21 includes two lower sliding surfaces 212 having the same radius of curvature, and the two lower sliding surfaces 212 are in transitional engagement through a separation plane 213; the guide chute 111 includes an upper chute surface 111a and two lower chute surfaces 111b having the same radius of curvature, with a separation space 111c between the two lower chute surfaces 111b, the upper chute surface 111a being slidably connected to the upper sliding surface 211, and the two lower chute surfaces 111b being slidably connected to the two lower sliding surfaces 212, respectively.

Since the arc-shaped support surface 112c is provided on the boss 112 and the arc-shaped slide surface 24 is provided on the swing arm 20, which partially coincides with the sliding connection range formed by the slide portion 21 and the guide chute 111, in order to reduce the manufacturing cost of the swing arm 20 and the chute support 11, the corresponding overlapping range can be omitted on the slide portion 21 and the guide chute 111, that is, in the present embodiment, a part of the lower slide surface 212 of the slide portion 21 is cut out to form the partition plane 213, and a part of the lower slide surface 212 of the guide chute 111 is also cut out to form the partition space 111c.

Therefore, the lower slide groove surface 111b and the lower slide surface 212 in the present embodiment are discontinuous, so that the amount of material used to form the lower slide groove surface 111b and the lower slide surface 212 can be reduced, thereby reducing the manufacturing cost of the swing arm 20 and the slide groove bracket 11.

Alternatively, the individual components of the hinge assembly 100 may be manufactured using a powder injection molding process.

Specifically, the powder injection molding process is a branch of metallurgy and material science, and mainly uses metal powder (including a small amount of mixed non-metal powder) as a raw material, and uses a method of 'forming and sintering' to manufacture materials and products, so that the process is a near net-shape molding process for producing complex parts at a lower cost.

Powder injection molding can be classified into two major categories, metal injection molding (Metal Injection Molding, MIM) and ceramic injection molding (Ceramic Injection Molding, CIM) according to the classification of materials. The powder injection molding process is used for manufacturing precise structural parts and appearance parts with high complexity, high precision, high strength and exquisite appearance, and has obvious advantages.

Alternatively, the various components of the hinge assembly 100 may be formed from an aluminum alloy material. The aluminum alloy material has the advantages of good heat dissipation effect, strong compression resistance and bending resistance, scratch resistance and scratch resistance, and the like, and the electronic equipment using the aluminum alloy material is more fashionable and attractive in appearance, thinner in body and better in texture.

Finally, it should be noted that: the foregoing is merely illustrative of specific embodiments of the present application, and the scope of the present application is not limited thereto, but any changes or substitutions within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A hinge assembly, comprising:

the chute bracket (11) is provided with an integrally formed guide chute (111);

a sliding part (21) is arranged at a position corresponding to the guide chute (111), and the swing arm (20) is connected to the guide chute (111) in a sliding way through the sliding part (21), so that the swing arm (20) can rotate relative to the chute bracket (11) to switch between a flattened state and a folded state; the swing arm (20) is also provided with an avoidance port (22);

the rotation stopping piece (30) is connected with the chute bracket (11) and penetrates through the avoidance opening (22) and is used for abutting against the swing arm (20) to prevent the swing arm (20) from continuing to rotate when the swing arm (20) rotates to the folding state.

2. Hinge assembly according to claim 1, characterized in that the chute bracket (11) has a limit hole (112 a) for the insertion of the rotation stop (30).

3. Hinge assembly according to claim 2, characterized in that the chute bracket (11) is provided with a boss (112), the limiting aperture (112 a) being located on the boss (112).

4. A hinge assembly according to claim 2 or 3, characterized in that the rotation stop (30) is fixedly mounted in the limiting aperture (112 a).

5. Hinge assembly according to claim 4, characterized in that one end of the rotation stop (30) is provided with a positioning portion (34) for defining the insertion depth of the rotation stop (30).

6. The hinge assembly of claim 5, wherein the aperture of the limiting aperture (112 a) has a slot (112 e) therein for defining the position of the detent (34).

7. The hinge assembly according to claim 5 or 6, characterized in that the peripheral wall of the end of the rotation stop member (30) remote from the positioning portion (34) has an interference bump (35), the rotation stop member (30) penetrates the limiting hole (112 a), and the rotation stop member (30) is pre-fixed in the limiting hole (112 a) by the positioning portion (34) and the interference bump (35).

8. A hinge assembly according to claim 2 or 3, further comprising:

the hinge cover (12), the anti-rotation piece (30) is fixedly installed on the hinge cover (12), the hinge cover (12) is fixedly installed on the bottom surface of the chute support (11), and the anti-rotation piece (30) penetrates through the limiting hole (112 a) from the bottom surface of the chute support (11).

9. The hinge assembly of claim 8, wherein the rotation stop (30) is integrally formed with the hinge cover (12).

10. Hinge assembly according to any one of claims 2-9, characterized in that the part of the swing arm (20) abutting against the rotation stop (30) is provided with an abutment (23), the abutment surface (231) of the abutment (23) being directed towards the chute bracket (11), the stop surface (31) of the rotation stop (30) being intended to abut against the abutment surface (231).

11. The hinge assembly according to claim 10, wherein a first abutment surface (32) of the rotation stop (30) is arranged opposite to the stop surface (31), and a second abutment surface (112 b) in a wall of the limiting hole (112 a) is arranged to abut against the first abutment surface (32), and projections of the second abutment surface (112 b), the first abutment surface (32) and the stop surface (31) on the abutment surface (231) at least partially overlap.

12. Hinge assembly according to claim 10 or 11, characterized in that the stop surface (31) has a hooking groove (33), the abutment surface (231) having a hook (232) which can extend into the hooking groove (33), the hooking groove (33) cooperating with the hook (232) for preventing the swing arm (20) from being detached from the direction away from the chute support (11).

13. The hinge assembly according to claim 12, characterized in that a third abutment surface (331) in the groove wall of the hanging groove (33) abuts against the hook (232), the third abutment surface (331) being arranged obliquely with respect to the stop surface (31); a fourth contact surface (232 a) in the peripheral wall of the hook-shaped part (232) is in contact with the third contact surface (331), and the fourth contact surface (232 a) is inclined relative to the contact surface (231).

14. A hinge assembly according to claim 3, characterized in that the boss (112) has an arc-shaped supporting surface (112 c), the swing arm (20) being provided with an arc-shaped sliding surface (24) at a position facing the side of the chute support (11) and adjacent to the escape opening (22), the arc-shaped sliding surface (24) being in sliding connection with the arc-shaped supporting surface (112 c), the axis of the arc-shaped sliding surface (24) coinciding with the virtual rotation axis of the sliding part (21) so that the swing arm (20) can rotate relative to the boss (112) under the support of the boss (112).

15. The hinge assembly of claim 14, wherein the boss (112) has two arcuate support surfaces (112 c) arranged side-by-side with a first relief groove (112 d) between the two arcuate support surfaces (112 c) in communication with the limiting aperture (112 a).

16. Hinge assembly according to claim 15, characterized in that the swing arm (20) has two arcuate sliding surfaces (24) arranged side by side, with a second relief groove (25) between the two arcuate sliding surfaces (24).

17. The hinge assembly according to any one of claims 14-16, wherein the sliding portion (21) comprises an upper sliding surface (211) and a lower sliding surface (212), the radius of curvature of the arcuate sliding surface (24) being smaller than the radius of curvature of the lower sliding surface (212).

18. Hinge assembly according to claim 17, characterized in that said sliding portion (21) comprises two lower sliding surfaces (212) with the same radius of curvature, said two lower sliding surfaces (212) being in transitional engagement with each other by a separation plane (213);

the guide chute (111) comprises an upper chute surface (111 a) and two lower chute surfaces (111 b) with the same curvature radius, a separation space (111 c) is arranged between the two lower chute surfaces (111 b), the upper chute surface (111 a) is in sliding connection with the upper sliding surface (211), and the two lower chute surfaces (111 b) are respectively in sliding connection with the two lower sliding surfaces (212).

19. An electronic device, comprising a first housing (200), a second housing (300), a screen (400) and a hinge assembly (100) according to any of claims 1-18, wherein the hinge assembly (100) is connected between the first housing (200) and the second housing (300), and wherein the screen (400) is laid over the first housing (200), the hinge assembly (100) and the second housing (300).