CN117111686A - Folding mechanism and electronic equipment - Google Patents

Abstract

The application discloses a folding mechanism and electronic equipment, the folding mechanism includes: the folding mechanism comprises a bracket and a swing arm, wherein one of the bracket and the swing arm is provided with an arc chute, the other one of the bracket and the swing arm is provided with an arc protrusion, the arc protrusion is positioned on the arc chute and is in sliding fit with the arc chute, and the folding mechanism is switched between an unfolding state and a folding state in the sliding process of the arc protrusion relative to the arc chute; the groove wall of the arc-shaped chute is provided with a limiting groove, one side of the arc-shaped bulge, which faces the groove wall of the arc-shaped chute, is provided with a limiting piece, and the limiting piece is in sliding connection with the limiting groove; under the folding state, the limiting piece is abutted against one side of the limiting groove so that the swing arm is in a stop state relative to the support.

Description

Folding mechanism and electronic equipment

Technical Field

The application belongs to the technical field of electronic equipment, and particularly relates to a folding mechanism and electronic equipment.

Background

In the conventional folding mechanism, as shown in fig. 1 and 2, an arc chute 10 'is designed on a bracket 1', as shown in fig. 3, an arc protrusion 20 'is designed on a virtual swing arm 2', and the virtual swing arm 2 'and the bracket 1' are matched through the arc chute 10 'and the arc protrusion 20' so as to realize rotation. However, in the folded state, the arc-shaped protrusion 20 'is pressed by the water drop structure of the screen, thereby generating a tendency to move to the outside (corresponding to the right side and the upper side in fig. 1), increasing the possibility of the swing arm 2' getting stuck; in addition, in the related art, the rotation of the virtual swing arm 2' is guaranteed by the arc chute 10' and the arc protrusion 20', the limit of the movement is limited, the stop is insufficient, the virtual swing arm is easy to deform under the influence of external force such as falling, and the risk of locking is high.

Disclosure of Invention

The application aims to provide a folding mechanism and electronic equipment, which at least solve the problem that the limit of the swing arm is limited by the cooperation of an arc chute and an arc bulge in the related art, so that the swing arm has a jamming risk.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides a folding mechanism, including: the folding mechanism comprises a bracket and a swing arm, wherein one of the bracket and the swing arm is provided with an arc chute, the other one of the bracket and the swing arm is provided with an arc protrusion, the arc protrusion is positioned on the arc chute and is in sliding fit with the arc chute, and the folding mechanism is switched between an unfolding state and a folding state in the sliding process of the arc protrusion relative to the arc chute; the groove wall of the arc-shaped chute is provided with a limiting groove, one side of the arc-shaped bulge, which faces the groove wall of the arc-shaped chute, is provided with a limiting piece, and the limiting piece is in sliding connection with the limiting groove; under the folding state, the limiting piece is abutted against one side of the limiting groove so that the swing arm is in a stop state relative to the support.

In a second aspect, an embodiment of the present application provides an electronic device, including: the first housing, the second housing and the folding mechanism as set forth in any one of the first aspects, wherein the first housing and the second housing are rotatably connected by the folding mechanism.

In the embodiment of the application, the folding mechanism comprises a bracket and a swing arm, one of the bracket and the swing arm is provided with an arc chute, the other is provided with an arc protrusion, the arc protrusion is in sliding connection with the arc chute, and the swing arm rotates relative to the bracket through the cooperation of the arc protrusion and the arc chute, so that the folding mechanism has an unfolding state and a folding state. Wherein, be provided with the spacing groove on the arc spout, be provided with the locating part on the arc arch, spacing groove and locating part sliding connection to make the locating part can slide for the spacing groove along with the rotation of swing arm, guaranteed folding mechanism's reliability of motion. Under the condition that the folding mechanism is in a folding state, the limiting groove is matched with the limiting piece, so that the swing arm is in a stop state relative to the support, and further movement of the arc-shaped bulge relative to the arc-shaped chute is limited, other parts squeeze the swing arm under the folding state, the arc-shaped bulge moves relative to the arc-shaped chute, and the swing arm is blocked, and abnormal noise is caused when the folding mechanism is opened and closed.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the application will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural view of a folding mechanism in the related art;

fig. 2 is a schematic structural view of a related art stent;

fig. 3 is a schematic structural view of a swing arm in the related art.

Reference numerals:

1 'support, 10' first slider, 2 'virtual swing arm, 20' second slider.

FIG. 4 is one of the schematic structural views of a folding mechanism according to an embodiment of the present application;

FIG. 5 is a second schematic structural view of a folding mechanism according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a swing arm according to an embodiment of the present application;

FIG. 7 is a schematic view of a structure of a bracket according to an embodiment of the present application;

FIG. 8 is a third schematic view of a folding mechanism according to an embodiment of the present application;

FIG. 9 is a fourth schematic structural view of a folding mechanism according to an embodiment of the present application;

fig. 10 is a schematic block diagram of an electronic device according to an embodiment of the application.

Reference numerals:

the electronic device comprises a support, a 10 arc chute, a 12 limit groove, a 121 first end, a 122 second end, a 123 first wall, a 124 second wall, a 14 clearance hole, a 2 swing arm, a 20 arc bulge, a 202 third end, a 204 fourth end, a 206 bearing bush, a 22 limit piece, a 3 cover body, a 30 reinforcing part, a 4 first shell, a 5 second shell, a 6 folding mechanism and 100 electronic equipment.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The features of the application "first", "second" and the like in the description and in the claims may be used for the explicit or implicit inclusion of one or more such features. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be understood that the terms "center," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting 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 or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The folding mechanism 6 and the electronic device 100 according to the embodiment of the present application are described below with reference to fig. 4 to 10.

As shown in fig. 4 and 5, a folding mechanism 6 according to some embodiments of the present application includes: the folding mechanism comprises a bracket 1 and a swing arm 2, wherein one of the bracket 1 and the swing arm 2 is provided with an arc chute 10, the other is provided with an arc protrusion 20, the arc protrusion 20 is positioned on the arc chute 10 and is in sliding fit with the arc chute 10, and the folding mechanism 6 is switched between an unfolding state and a folding state in the process that the arc protrusion 20 slides relative to the arc chute 10; the groove wall of the arc-shaped chute 10 is provided with a limiting groove 12, one side of the arc-shaped protrusion 20 facing the groove wall of the arc-shaped chute 10 is provided with a limiting piece 22, and the limiting piece 22 is in sliding connection with the limiting groove 12; in the folded state, the limiting piece 22 abuts against one side of the limiting groove 12 so that the swing arm 2 is in a stop state relative to the bracket 1.

In the embodiment of the application, the folding mechanism 6 comprises a bracket 1 and a swing arm 2, one of the bracket 1 and the swing arm 2 is provided with an arc chute 10, the other is provided with an arc protrusion 20, the arc protrusion 20 is in sliding connection with the arc chute 10, and the swing arm 2 rotates relative to the bracket 1 through the cooperation of the arc protrusion 20 and the arc chute 10, so that the folding mechanism 6 has an unfolding state and a folding state. The arc chute 10 is provided with a limit groove 12, the arc protrusion 20 is provided with a limit piece 22, and the limit groove 12 is slidably connected with the limit piece 22, so that the limit piece 22 can slide relative to the limit groove 12 along with the rotation of the swing arm 2, and the reliability of the movement of the folding mechanism 6 is ensured. Under the condition that the folding mechanism 6 is in a folding state, the limiting groove 12 is matched with the limiting piece 22, so that the swing arm 2 is in a stop state relative to the support 1, and further movement of the arc-shaped protrusion 20 relative to the arc-shaped chute 10 is limited, the swing arm 2 is prevented from being extruded by other parts under the folding state, the arc-shaped protrusion 20 moves relative to the arc-shaped chute 10, and the swing arm 2 is blocked, and abnormal opening and closing of the folding mechanism 6 are caused.

It should be noted that, when the folding mechanism 6 is applied to the electronic device 100, the flexible screen is folded or unfolded by the folding mechanism 6, and under the condition that the folding mechanism 6 is in a folded state, the folding area of the flexible screen is arranged corresponding to the folding mechanism 6, and the folding area is in a water drop shape, and the folding area in the water drop shape can squeeze the arc-shaped protrusion 20.

In particular, in the case where the swing arm 2 is in the stopped state with respect to the bracket 1, the arc-shaped protrusion 20 cannot move with respect to the arc-shaped chute 10, or has a small displacement gap.

Optionally, the arcuate projections 20 are bearing shells 206.

As shown in fig. 6 and 7, according to some embodiments of the present application, an arc chute 10 is provided to a bracket 1, and an arc protrusion 20 is provided to a swing arm 2.

In this embodiment, the arc chute 10 is provided on the bracket 1, the arc protrusion 20 is provided on the swing arm 2, and the swing arm 2 is rotatably connected with the bracket 1 by the cooperation of the arc chute 10 and the arc protrusion 20.

Alternatively, the arc-shaped protrusions 20 are arranged at two ends of the swing arm 2 along the rotation axis direction of the swing arm 2, and the arc-shaped sliding grooves 10 on the bracket 1 are correspondingly arranged at two sides of the bracket 1 along the rotation axis direction of the swing arm 2.

As shown in fig. 5 and 6, alternatively, the stopper 22 is provided at least one of both ends of the arc-shaped protrusion 20 along the rotation axis of the swing arm 2, and the stopper groove 12 is provided at least one of both ends of the arc-shaped chute 10.

In this embodiment, the stopper 22 is provided at least one of both ends of the arc-shaped projection 20 along the rotation axis of the swing arm 2, thereby achieving the restriction of the rotation axis in the radial and axial directions. Accordingly, the limiting groove 12 is provided at least one of both ends of the arc chute 10, and also ensures the strength of the bracket 1 while ensuring the cooperation with the limiting piece 22.

According to some embodiments of the present application, the limiting groove 12 penetrates the arc chute 10 or the limiting groove 12 is a blind groove provided on the arc chute 10 along the rotation axis direction of the swing arm 2.

In this embodiment, the limiting groove 12 may be a through groove disposed on the groove wall of the arc chute 10, that is, the limiting groove 12 penetrates the arc chute 10 along the rotation axis direction, so as to observe the matching condition of the limiting piece 22 and the limiting groove 12, of course, the limiting groove 12 may also be a blind groove disposed on the arc chute 10, that is, the limiting groove 12 does not penetrate the arc chute 10 along the rotation axis direction, so as to improve the strength of the bracket 1, avoid the bracket 1 from breaking, and improve the reliability of the bracket 1.

According to some embodiments of the present application, the length of the limit groove 12 is less than or equal to the length of the arc chute 10 along the sliding direction of the arc protrusion 20 in the arc chute 10.

In this embodiment, the length of the limiting groove 12 is set to be less than or equal to the length of the arc chute 10, so that the limiting piece 22 and the limiting groove 12 are guaranteed to have a better limiting effect on the swing arm 2, and the limiting piece 22 is prevented from being separated from the limiting groove 12.

According to some embodiments of the present application, the limiting groove 12 is curved and extends along the extending direction of the arc chute 10, so that the limiting member 22 moves along with the arc protrusion 20.

In this embodiment, the limit groove 12 is curved, and the limit groove 12 extends along the extending direction of the arc chute 10, so that the limit groove 12 is the same as the curved direction of the arc chute 10, and when the arc protrusion 20 slides in the arc chute 10, the limit piece 22 can slide in the limit groove 12 along with the arc protrusion 20, so as to ensure smooth rotation of the swing arm 2 while limiting the swing arm 2.

Alternatively, the limiting groove 12 is arc-shaped, and the movement track of the limiting piece 22 in the limiting groove 12 and the movement track of the arc-shaped protrusion 20 in the arc-shaped chute 10 are arranged concentrically.

As shown in fig. 9, the spacing groove 12 includes a first end 121 and a second end 122 according to some embodiments of the present application; in the folded state, the stopper 22 is engaged with the first end 121; in the deployed state, the retainer 22 mates with the second end 122, wherein the first end 121 is smaller in size than the second end 122.

In this embodiment, the limiting groove 12 includes a first end 121 and a second end 122, where the limiting member 22 is located at the first end 121 when the folding mechanism 6 is in the folded state, and where the limiting member 22 is located at the second end 122 when the folding mechanism 6 is in the unfolded state, where the size of the first end 121 is smaller than that of the second end 122, so that a gap between the limiting member 22 and the first end 121 when the limiting member 22 is matched is smaller than a gap between the limiting member 22 and the second end 122 when the limiting member 22 is matched, that is, when the limiting member 22 is in the first end 121, the limiting member 22 is in small clearance fit or clearance fit with the first end 121, so that the arc-shaped protrusion 20 cannot move in a radial direction and/or an axial direction of a rotation axis relative to the arc-shaped chute 10, thereby avoiding the situation that the arc-shaped protrusion 20 is deformed or moved after other components such as a flexible screen press the arc-shaped protrusion 20 or the folding mechanism 6 is knocked, and further avoiding the occurrence of the situation that the swing arm 2 is jammed.

It will be appreciated that the first end 121 is sized smaller than the second end 122 such that the gap between the first end 121 and the stop 22 in the folded state is smaller than the gap between the second end 122 and the stop 22 in the unfolded state.

Optionally, a gap is provided between the arc-shaped protrusion 20 and the arc-shaped chute 10 to ensure reliable sliding between the arc-shaped protrusion 20 and the arc-shaped chute 10. When the limiting member 22 is located at the first end 121, the limiting member 22 and the first end 121 have a smaller gap, and the gap between the limiting member 22 and the first end 121 is smaller than the gap between the arc-shaped protrusion 20 and the arc-shaped chute 10.

In a specific application, the first end 121 is a head of the limiting slot 12, and the second end 122 is a tail of the limiting slot 12.

According to some embodiments of the application, the number of swing arms 2 is at least two, and in the folded state, the at least two swing arms 2 are oppositely arranged; the number of the arc-shaped sliding grooves 10 is at least two, and the at least two arc-shaped sliding grooves 10 are correspondingly arranged with the two swing arms 2 which are oppositely arranged; the two opposite limiting grooves 12 are communicated with each other at the second ends 122 of the two limiting grooves 12, and the two second ends 122 penetrate through the end face of the bracket 1 along the sliding direction of the limiting piece 12.

In this embodiment, the number of the swing arms 2 is at least two, and correspondingly, the number of the arc-shaped sliding grooves 10 is at least two, in the folded state, the at least two swing arms 2 are relatively arranged, and then the at least two arc-shaped sliding grooves 10 matched with the relatively arranged swing arms 2 are also relatively arranged, so that the limit grooves 12 on the relatively arranged arc-shaped sliding grooves 10 are also relatively arranged, wherein the second ends 122 of the relatively arranged two limit grooves 12 are communicated and penetrate through the bracket 1 along the sliding direction, thereby facilitating the installation of the limit piece 22.

As shown in fig. 9, according to some embodiments of the present application, the width of the limit groove 12 gradually increases from the first end 121 to the second end 122 in a section perpendicular to the rotation axis of the swing arm 2.

In this embodiment, on the section perpendicular to the rotation axis of the swing arm 2, the width of the limit groove 12 is gradually increased from the first end 121 to the second end 122, so that the gap between the limit piece 22 and the limit groove 12 is gradually increased in the process from the folded state to the unfolded state, and the smoothness of the movement of the swing arm 2 in the unfolding process is also ensured under the condition that the stability between the arc-shaped protrusion 20 and the arc-shaped chute 10 in the folded state is ensured, and the excessive locking of the arc-shaped protrusion 20 is prevented.

As shown in fig. 9, according to some embodiments of the present application, in a cross section perpendicular to the rotation axis of the swing arm 2, the limit groove 12 includes opposite first and second wall surfaces 123 and 124, and the first and second wall surfaces 123 and 124 are arc-shaped.

In this embodiment, the stopper groove 12 has a first wall surface 123 and a second wall surface 124 in a cross section perpendicular to the rotation axis, and the first wall surface 123 and the second wall surface 124 are disposed in an arc shape to ensure the reliability of the movement of the stopper 22 in the stopper groove 12.

It will be appreciated that the distance between the first wall 123 and the second wall 124 increases gradually from the first end 121 to the second end 122.

Alternatively, the first wall surface 123 and the second wall surface 124 have circular arc shapes.

As shown in fig. 7 and 8, according to some embodiments of the present application, the bracket 1 is provided with a clearance hole 14, the clearance hole 14 is located at one end of the arc chute 10, and the clearance hole 14 is used for installing the arc protrusion 20.

In this embodiment, be provided with clearance hole 14 on support 1 for play the effect of dodging when installing arc protruding 20, so that arc protruding 20 is packed into arc spout 10 by arc spout 10 being close to the one end of clearance hole 14, and then need not split into a plurality of parts with support 1, has reduced the assembly degree of difficulty.

Optionally, the second end 122 is disposed proximate the clearance hole 14.

As shown in fig. 4 and 8, the folding mechanism 6 further includes, according to some embodiments of the application: the cover body 3, the cover body 3 lid is located the support 1 and is kept away from the one side of swing arm 2, is equipped with the reinforcement portion 30 on the cover body 3, and the direction protrusion of reinforcement portion 30 to being close to support 1, reinforcement portion 30 stretches into in the clearance hole 14.

In this embodiment, the folding mechanism 6 further includes a cover 3 for protecting the stand 1, while also avoiding the stand 1 from being exposed, and improving the aesthetic appearance of the stand 1. The bracket 1 is provided with the clearance hole 14 avoiding the arc-shaped bulge 20, so that the strength of the bracket 1 is reduced, and the cover body 3 is provided with the reinforcing part 30, so that the reinforcing part 30 stretches into the clearance hole 14, and the strength of the bracket 1 is improved.

In a specific application, the cover 3 is assembled after the swing arm 2 and the bracket 1 are assembled.

Optionally, the reinforcement 30 comprises a boss.

As shown in fig. 5 and 6, according to some embodiments of the present application, the arcuate projection 20 includes a third end 202 and a fourth end 204 disposed opposite each other, the third end 202 being disposed proximate the clearance hole 14, wherein the stop 22 is disposed proximate the third end 202.

In this embodiment, the arc-shaped protrusion 20 includes a third end 202 and a fourth end 204 that are disposed opposite to each other, where the third end 202 is disposed near the clearance hole 14, and when the arc-shaped protrusion is assembled, the fourth end 204 may be first installed into the arc-shaped chute 10 from the end of the arc-shaped chute 10 near the clearance hole 14, so that the third end 202 is located at the side of the fourth end 204 near the clearance hole 14. Wherein the limiting member 22 is disposed near the third end 202 to ensure the sliding length of the arc-shaped protrusion 20 on the arc-shaped chute 10.

In a specific application, the third end 202 is the head of the arc-shaped protrusion 20, the fourth end 204 is the tail of the arc-shaped protrusion 20, and when assembled, the tail of the arc-shaped protrusion 20 is firstly installed into the arc-shaped chute 10 of the bracket 1, and the head of the arc-shaped protrusion 20 is installed into the arc-shaped chute 10 of the bracket 1, so that the assembly is realized under the condition that the bracket 1 is not split into two pieces.

It will be appreciated that the arcuate projection 20 includes a bearing shell 206, the bearing shell 206 being circular in shape.

According to some embodiments of the application, the bracket 1 is of unitary construction.

In this embodiment, the support 1 is provided as an integral structure, which ensures the strength of the support 1, and further ensures the smooth completion of folding and unfolding of the folding mechanism 6.

According to some embodiments of the application, the stop 22 comprises a protrusion that is cylindrical or oval in cross-section.

In this embodiment, the limiting member 22 includes a protrusion, which is a cylinder, and by matching the cylindrical limiting member 22 with the limiting groove 12, the sliding friction is reduced, and the smoothness of the opening and closing of the folding mechanism 6 is improved. The limiting piece 22 may have an elliptical cross section, and the contact area can be reduced, so that the friction force between the limiting piece 22 and the limiting groove 12 can be reduced.

It will be appreciated that the cross section of the stop 22 is elliptical in a plane perpendicular to the axis of rotation of the swing arm 2.

As shown in fig. 10, according to some embodiments of the present application, there is also provided an electronic device 100 including: the first housing 4, the second housing 5 and the folding mechanism 6 according to any of the foregoing embodiments, where the first housing 4 and the second housing 5 are rotationally connected by the folding mechanism 6, so that all the beneficial effects of the folding mechanism 6 are included, and are not described herein.

Note that, the electronic device 100 includes a mobile phone, a tablet computer, and the like.

In a specific application, a limiting piece 22 is added on the arc-shaped protrusion 20 (such as a bearing bush 206), and a limiting groove 12 is added on the bracket 1. Namely, on the basis of the original bearing bush 206 and the arc-shaped chute 10, the cooperation of the limiting piece 22 and the limiting groove 12 is added, the stop position of the bearing bush 206 is added, the swing arm 2 (such as a virtual swing arm) is prevented from moving on the right side and the upper side due to the extrusion of a water drop structure of a screen (such as a flexible screen), and the blocking risk is reduced in principle.

Optionally, a group of limiting pieces 22 are added to be matched, the limiting pieces 22 are round, machining measurement is more accurate, the requirements on manufacturing accuracy of the axle bush 206 and the arc chute 10 are reduced, and the blocking condition is reduced in the manufacturing process. After the bearing bushes 206 in the virtual swing arms are dropped and deformed, the limiting members 22 can still be clamped in the limiting grooves 12, so that the clamping is avoided.

Optionally, the bracket 1 is provided with a mounting hole (such as a clearance hole 14) of the virtual swing arm, so that the tail of the virtual swing arm is prevented from interfering with the bracket 1 during assembly, and the tail of the virtual swing arm can be firstly installed during assembly, thereby realizing assembly of the virtual swing arm. The bracket 1 is integrated, high in strength and convenient to assemble.

The cover 3 (for example, a pivot cover) is provided with a reinforcing portion 30 (for example, a boss), and the space of the mounting hole of the dummy swing arm can be used to compensate for the strength loss due to the hole. The conventional scheme is that the head of the virtual swing arm is firstly arranged in the bracket 1, but the bracket 1 can only be split into two parts and a lock screw due to the blocking of the limiting piece 22, the strength is weak, and the screw is not locked in place and is easy to be blocked. The folding assembly provided by the application does not need to make a sliding groove or open a hole on the virtual swing arm, and does not influence the strength of the virtual swing arm.

Optionally, the head of the limiting groove 12 is narrow, the tail is wide, the limiting piece 22 is only stopped by the limiting groove 12 in the folded state to be effective, a fit gap is reserved between the middle rotation process and the limiting groove 12, the over-positioning condition can not occur, and smooth rotation can be ensured.

Specifically, the virtual swing arm is provided with a bearing bush 206, and the bearing bush 206 is divided into a tail part and a head part. The bearing shell 206 is provided with a stop 22. The stopper 22 is cylindrical.

The bracket 1 is provided with an arc-shaped chute 10 and a limiting groove 12, the limiting groove 12 is divided into a head part (for example, a first end part 121) and a tail part (for example, a second end part 122), the width of the head part is narrow, the width of the tail part is wide, the limiting groove 12 is in a circular arc shape from the width of the tail part to the width of the head part from wide to narrow, the gap is gradually increased in the process from folding to unfolding, and therefore, the smooth rotation is realized on the premise of ensuring that the small clearance fit in the folding state prevents clamping, and the overstepping is prevented.

The bracket 1 is provided with the clearance hole 14 to avoid the tail part of the bearing bush 206, the tail part of the bearing bush 206 is firstly arranged in the bracket 1 during assembly, and the head part of the bearing bush 206 is arranged in the bracket 1, so that the assembly under the condition that the bracket 1 is not split into two pieces is realized.

The rotating shaft cover is provided with a boss, and after the virtual swing arm and the bracket 1 are assembled, the rotating shaft cover is assembled. The spindle cover can be inserted into the space of the clearance hole 14 to reinforce the strength of the bracket 1.

The bulge of the bearing bush can also be a runway, and the second chute can be a non-circular arc curve such as a spline curve.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the application, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A folding mechanism, comprising:

the folding mechanism comprises a bracket and a swing arm, wherein one of the bracket and the swing arm is provided with an arc chute, the other is provided with an arc bulge, the arc bulge is positioned on the arc chute and is in sliding fit with the arc chute, the folding mechanism is switched between an unfolding state and a folding state in the sliding process of the arc bulge relative to the arc chute,

the groove wall of the arc-shaped chute is provided with a limiting groove, one side of the arc-shaped protrusion, which faces the groove wall of the arc-shaped chute, is provided with a limiting piece, and the limiting piece is in sliding connection with the limiting groove;

and in the folded state, the limiting piece is abutted against one side of the limiting groove so that the swing arm is in a stop state relative to the bracket.

2. The folding mechanism of claim 1, wherein the arcuate chute is disposed in the bracket and the arcuate projection is disposed in the swing arm.

3. The folding mechanism of claim 2, wherein the folding mechanism comprises a folding mechanism comprising a folding mechanism,

along the rotation axis direction of the swing arm, the limit groove penetrates through the arc-shaped chute, or the limit groove is a blind groove arranged on the arc-shaped chute.

4. The folding mechanism of claim 1, wherein the length of the limit slot is less than or equal to the length of the arcuate slot along the sliding direction of the arcuate projection within the arcuate slot.

5. The folding mechanism of claim 1, wherein the limit slot is curved and extends in the direction of extension of the arcuate chute to move the limit member with the arcuate projection.

6. The folding mechanism of any of claims 1 to 5, wherein,

the limiting groove comprises a first end part and a second end part;

in the folded state, the limiting piece is matched with the first end part; in the unfolded state, the limiting piece is matched with the second end part,

wherein the first end portion has a smaller dimension than the second end portion.

7. The folding mechanism of claim 6, wherein the folding mechanism comprises a folding mechanism comprising a folding mechanism,

the number of the swing arms is at least two, and in the folded state, the at least two swing arms are oppositely arranged;

the number of the arc-shaped sliding grooves is at least two, and the at least two arc-shaped sliding grooves are correspondingly arranged with the two swing arms which are oppositely arranged;

wherein, arbitrary all be equipped with on the arc spout the spacing groove, two of relative setting the second tip of spacing groove is linked together, and two the second tip is followed the slip direction of locating part runs through the terminal surface of support.

8. The folding mechanism of any of claims 1 to 5, wherein,

the support is provided with a clearance hole, the clearance hole is positioned at one end of the arc chute, and the clearance hole is used for installing the arc protrusion.

9. The folding mechanism of claim 8, further comprising:

the cover body is covered on one side of the support, which is away from the swing arm, and is provided with a reinforcing part, the reinforcing part protrudes towards the direction close to the support, and the reinforcing part stretches into the clearance hole.

10. The folding mechanism of claim 8, wherein the folding mechanism comprises a folding mechanism,

the arc-shaped protrusion comprises a third end part and a fourth end part which are oppositely arranged, the third end part is close to the clearance hole, and the limiting part is close to the third end part.

11. The folding mechanism of any of claims 1 to 5, wherein,

the limiting piece comprises a protrusion, and the protrusion is cylindrical or elliptical in cross section.

12. An electronic device, comprising:

the first housing, the second housing and the folding mechanism of any one of claims 1 to 11, wherein the first housing and the second housing are rotatably connected by the folding mechanism.