WO2022228158A1

WO2022228158A1 - Folding mechanism and electronic device

Info

Publication number: WO2022228158A1
Application number: PCT/CN2022/087180
Authority: WO
Inventors: 徐正一; 牛林辉; 刘婷; 马春军; 李云勇; 管城豪
Original assignee: 华为技术有限公司
Priority date: 2021-04-25
Filing date: 2022-04-15
Publication date: 2022-11-03
Also published as: CN115250299A

Abstract

Disclosed in the present application are a folding mechanism and an electronic device. The folding mechanism is connected to a first housing and a second housing, so as to relatively unfold or fold the first housing and the second housing. The folding mechanism comprises a main shaft, a first connection arm, a first ball, and a first elastic assembly. A first rotation end of the first connection arm is connected to the first housing. A second rotation end of the first connection arm is rotatably connected to the main shaft. In at least part of a process of unfolding or folding the electronic device, the second rotation end of the first connection arm rotates relative to the main shaft, and the first elastic assembly deforms, and presses the first ball to the second rotation end of the first connection arm. The first ball rolls relative to the second rotation end of the first connection arm. In this way, the folding mechanism can reduce the rotation speed of the first housing and the second housing, thereby protecting a flexible screen of the electronic device, and improving reliability of the flexible screen of the electronic device.

Description

Folding mechanism and electronic equipment

This application claims the priority of the Chinese patent application with the application number 202110448404.7 and the application name "Folding Mechanism and Electronic Equipment" filed with the China Patent Office on April 25, 2021, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the technical field of foldable electronic products, and in particular, to a folding mechanism and an electronic device.

Background technique

Folding mobile phones are more and more popular among users due to their large display area in the flattened state and miniaturization in the folded state. A conventional folding mobile phone includes a flexible screen, a first casing, a second casing and a folding mechanism. The first casing and the second casing are used to carry the flexible screen. The folding mechanism connects between the first casing and the second casing. The folding mechanism is used to relatively unfold or fold the first housing and the second housing, and to unfold or fold the flexible screen. However, during the folding or unfolding process of the conventional folding mechanism, improper operation by the user may cause the first casing and the second casing to unfold or fold at a relatively fast speed, thereby damaging the flexible screen.

SUMMARY OF THE INVENTION

The present application provides a folding mechanism and an electronic device. The folding mechanism can be applied to a folding device of an electronic device. The electronic device may also include a flexible screen mounted on the folding device. In the process of unfolding or folding, the folding mechanism can reduce the folding or unfolding speed of the first casing and the second casing, thereby protecting the flexible screen, improving the reliability of the flexible screen, and making the flexible screen and the electronic device have a longer use. life.

In a first aspect, the present application provides an electronic device. The electronic device includes a folding mechanism, a first casing and a second casing. The folding mechanism connects the first casing and the second casing. The folding mechanism includes a main shaft, a first connecting arm, a first ball and a first elastic component. The first connecting arm includes a first rotating end and a second rotating end. The first rotating end of the first connecting arm is connected to the first housing. The second rotating end of the first connecting arm is rotatably connected to the main shaft. The first ball and the first elastic component are both arranged on the main shaft.

When the electronic device is in a flattened state, the first ball is located between the first elastic component and the second rotating end of the first connecting arm, the first elastic component abuts the first ball, and the first ball abuts against the first connecting arm of the first connecting arm. Two rotating ends.

During at least part of the unfolding or folding process of the electronic device, the second rotating end of the first connecting arm rotates relative to the main shaft, the first elastic component is deformed, and the first ball rolls relative to the second rotating end of the first connecting arm. The deformation of the first elastic component includes the following situations: one is that when the electronic device is in a flat state, the first elastic component is in a natural state (that is, the compression amount of the first elastic component is zero), and the electronic device is unfolding. Or during at least part of the folding process, the amount of compression of the first elastic component is changed to be in a compressed state. Another is that when the electronic device is in a flattened state, the first elastic component is in a compressed state (that is, the compression amount of the first elastic component is not zero), and during at least part of the process of unfolding or folding the electronic device, the first elastic component is in a compressed state (that is, the compression amount of the first elastic component is not zero). The amount of compression of the elastic component can be varied or constant. In other embodiments, the deformation of the first elastic component may also include other situations.

It can be understood that, when the electronic device is unfolding or folded at least in part, the first elastic component is deformed, and the first elastic component can press the first ball to the second rotating end of the first connecting arm. The frictional force between the first ball and the second rotating end of the first connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the electronic device, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the electronic device to a certain extent. When the electronic device is in a flat state, the stability of the electronic device is better. It should be noted that, when the user needs to fold the electronic device, the user exerts a force on the electronic device, and when the force exerted by the user does not overcome the frictional force, the electronic device cannot be folded.

In addition, compared with the solution in which the first elastic component directly acts on the second rotating end of the first connecting arm, in this embodiment, by arranging the first ball between the second rotating end of the first connecting arm and the first elastic component, the first A ball can convert the sliding relationship between the first elastic component and the second rotating end of the first connecting arm into a rolling manner, thereby reducing friction loss between the first elastic component and the second rotating end of the first connecting arm.

In addition, compared with the solution in which the first ball and the first elastic component are arranged in the first housing or the second housing, the present application can reduce the The weight of the first casing or the second casing is beneficial to the lightweight setting of the first casing and the second casing, thereby reducing the difficulty of unfolding or folding the first casing and the second casing relative to each other; on the other hand The distribution of the folding mechanism is relatively concentrated, which is beneficial to improve the space utilization rate of the electronic device.

In an achievable manner, when the electronic device is in a flattened state, the first elastic component is in a compressed state.

It can be understood that when the electronic device is in a flattened state, the first elastic component can press the first ball to the second rotating end of the first connecting arm. The frictional force between the first ball and the second rotating end of the first connecting arm can be greatly increased. In this way, when the electronic device is in a flattened state, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the electronic device to a certain extent. When the electronic device is in a flat state, the stability of the electronic device is better. It should be noted that, when the user needs to fold the electronic device, the user exerts a force on the electronic device, and when the force exerted by the user does not overcome the frictional force, the electronic device cannot be folded.

In an achievable manner, the deformation direction of the first elastic component is parallel to the lengthwise extension direction of the main shaft.

In an implementation manner, the second rotating end of the first connecting arm includes an arc-shaped arm. The arc-shaped arm of the first connecting arm is rotatably connected to the main shaft. The arc-shaped arm of the first connecting arm has a first side surface. The first side surface is protruded with a first bump.

When the electronic device is in a flattened state, the first ball abuts against the first side surface.

During the unfolding or folding process of the electronic device, the first ball rolls relative to the first bump.

It can be understood that when the electronic device starts to be folded from the flattened state to the closed state, the first ball rolls relative to the first projection. When the folding angle of the electronic device is small, under the action of the first bump of the first connecting arm, the first ball can roll back to the lower part of the first bump of the first connecting arm. Therefore, through the cooperation between the first ball and the first bump, when the folding angle of the electronic device is small, the electronic device can be automatically unfolded to a flattened state.

In addition, when the electronic device transitions from the closed state to the flattened state, the first ball rolls relative to the first bump. When the flattening angle of the electronic device is relatively large (close to the flattened state), the first ball rolls from the high position of the first bump of the first connecting arm to the low position of the first bump of the first connecting arm, and the first The rolling speed of the balls is fast, allowing the user to experience the feeling of being flattened in place.

In an achievable manner, the first protrusion of the first connecting arm has a first inclined surface. The first inclined surface is connected to the first side surface of the first connecting arm. When the electronic device is in a flat state, the first balls abut against the first inclined surface of the first connecting arm.

It can be understood that, when the first elastic component can exert a force on the first inclined surface of the first connecting arm through the first ball, the first connecting arm can receive a supporting force (also called flattening) along the thickness direction of the electronic device. support). The supporting force can hinder the rotation of the second rotating end of the first connecting arm relative to the main shaft to a certain extent, that is, the supporting force can hinder the folding of the electronic device to a certain extent. Therefore, the supporting force can ensure better stability of the electronic device when it is in a flattened state.

In an achievable manner, the second rotating end of the first connecting arm includes a second protrusion. The second protrusion is protruded on the first side surface of the first connecting arm. The second bump is spaced apart from the first bump.

When the electronic device is in a flattened state, at least a portion of the first ball is located between the first bump and the second bump.

It can be understood that, by arranging the second protrusion on the second rotating end of the first connecting arm, the second protrusion of the first connecting arm can cooperate with the first protrusion, so as to align the first ball in the first direction. Limit. The first direction is the direction in which the first bump faces the second bump.

In one implementation, the main shaft includes a base and a first housing. The first shell is fixedly connected to the base. The first casing and the base together enclose a first receiving space, a first rolling groove and a first arc groove which are communicated in sequence.

The first elastic component is arranged in the first receiving space. At least part of the first ball is rollingly connected to the first rolling groove. The arc-shaped arm of the first connecting arm is rotatably connected to the first arc-shaped groove.

It can be understood that the cooperation between the arc-shaped arm of the first connecting arm and the first arc-shaped groove of the main shaft can form a virtual shaft rotational connection structure. The rotation connection between the second rotating end of the first connecting arm and the main shaft is realized through a virtual axis, which can reduce the design difficulty of the folding mechanism, and has lower requirements on the size of the folding mechanism, which is beneficial to the reduction of the folding mechanism and the folding device.

In addition, by rolling at least part of the first balls to the first rolling grooves, the base and the first housing can limit the position of the first balls in the second direction. The second direction is the direction in which the first housing faces the base.

In an achievable manner, the folding mechanism further includes a second connecting arm and a second ball. The second connecting arm includes a first rotating end and a second rotating end. The first rotating end of the second connecting arm is connected to the second housing. The second rotating end of the second connecting arm is rotatably connected to the main shaft. The second ball is arranged on the main shaft and is spaced apart from the first ball.

When the electronic device is in a flattened state, the second ball is located between the first elastic component and the second rotating end of the second connecting arm, the first elastic component abuts the second ball, and the second ball abuts the first elastic component of the second connecting arm. Two rotating ends.

During at least part of the unfolding or folding of the electronic device, the second rotating end of the second connecting arm rotates relative to the main shaft, and the second ball rolls relative to the second rotating end of the second connecting arm.

It can be understood that when the electronic device is unfolding or folded at least in part, the first elastic component is deformed, and the first elastic component can press the second ball to the second rotating end of the second connecting arm. The frictional force between the second ball and the second rotating end of the second connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the electronic device, the second rotating end of the second connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the electronic device to a certain extent. When the electronic device is in a flat state, the stability of the electronic device is better. It should be noted that, when the user needs to fold the electronic device, the user exerts a force on the electronic device, and when the force exerted by the user does not overcome the frictional force, the electronic device cannot be folded.

In addition, compared with the solution in which the first elastic component directly acts on the second rotating end of the second connecting arm, in this embodiment, by arranging the second ball between the second rotating end of the second connecting arm and the first elastic component, the first The two balls can convert the sliding relationship between the first elastic component and the second rotating end of the second connecting arm into a rolling manner, thereby reducing friction loss between the first elastic component and the second rotating end of the second connecting arm.

In addition, compared with the solution of disposing the second ball in the first casing or the second casing, the present application can reduce the weight of the first casing or the second casing by disposing the second ball in the main shaft on the one hand. , which is conducive to the lightweight setting of the first shell and the second shell, thereby reducing the difficulty of unfolding or folding the first shell and the second shell relative to each other; Equipment space utilization.

In addition, the first elastic component can squeeze the second rotating end of the first connecting arm through the first ball, and can also squeeze the second rotating end of the second connecting arm through the second ball. multipurpose" effect.

In an achievable manner, the first elastic component includes a first bracket and a first elastic member. The first elastic component is deformed to deform the first elastic member. The first bracket is slidably connected to the main shaft. The first bracket includes a first abutting part and a first guiding part. The first guide portion is fixedly connected to the first resisting portion. The first elastic piece is sleeved with the first guide portion. One end of the first elastic member abuts the first abutting portion, and the other end abuts the main shaft. A part of the first ball is in contact with the first abutting portion, and the first abutting portion is arranged between the first ball and the first elastic member. A part of the second ball is in contact with the first abutting portion, and the first abutting portion is disposed between the second ball and the first elastic member.

It can be understood that the structure of the first elastic component is relatively simple and easy to implement.

In an achievable manner, the first abutting portion of the first bracket is provided with a first limiting groove and a second limiting groove arranged at intervals. A part of the first ball is in contact with the first abutting part, including: a part of the first ball is in contact with the first limiting groove. A part of the second ball is in contact with the first abutting part, including: a part of the second ball is located in the second limiting groove.

It can be understood that the groove wall of the first limiting groove can prevent the first ball from rolling out of the first limiting groove, that is, the first limiting groove has the function of limiting the position of the first ball. In addition, the groove wall of the second limiting groove can prevent the second ball from rolling out of the second limiting groove, that is, the second limiting groove has the function of limiting the position of the second ball.

In an achievable manner, the folding mechanism further includes a third ball and a second elastic component. Both the third ball and the second elastic component are arranged on the main shaft.

When the electronic device is in a flat state, the third ball is located between the second elastic component and the second rotating end of the first connecting arm, the second elastic component abuts the third ball, and the third ball abuts the first connecting arm of the first connecting arm. Two rotating ends.

During at least part of the unfolding or folding of the electronic device, the second elastic component is deformed, the third ball rolls relative to the second rotating end of the first connecting arm, and the deformation direction of the second elastic component is opposite to the deformation direction of the first elastic component . The deformation of the second elastic component includes the following situations: one is that when the electronic device is in a flattened state, the second elastic component is in a natural state (that is, the compression amount of the second elastic component is zero), and the electronic device is in the unfolded state. Or during at least part of the folding process, the amount of compression of the second elastic component is changed so as to be in a compressed state. Another is that when the electronic device is in a flattened state, the second elastic component is in a compressed state (that is, the compression amount of the second elastic component is not zero), and during at least part of the process of unfolding or folding the electronic device, the second elastic component is in a compressed state (that is, the compression amount of the second elastic component is not zero). The amount of compression of the elastic component may or may not vary. In other embodiments, the deformation of the second elastic component may also include other situations.

It can be understood that when the electronic device is unfolding or folded at least in part, the second elastic component is deformed, and the second elastic component can press the third ball to the second rotating end of the first connecting arm. The frictional force between the third ball and the second rotating end of the first connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the electronic device, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the electronic device to a certain extent. When the electronic device is in a flat state, the stability of the electronic device is better. It should be noted that, when the user needs to fold the electronic device, the user exerts a force on the electronic device, and when the force exerted by the user does not overcome the frictional force, the electronic device cannot be folded.

In addition, compared with the solution in which the second elastic component directly acts on the second rotating end of the first connecting arm, in this embodiment, by arranging a third ball between the second rotating end of the first connecting arm and the second elastic component, the first The three balls can convert the sliding relationship between the second elastic component and the second rotating end of the first connecting arm into a rolling manner, thereby reducing friction loss between the second elastic component and the second rotating end of the first connecting arm.

In addition, compared with the solution in which the third ball and the second elastic component are arranged in the first housing or the second housing, by arranging both the third ball and the second elastic component in the main shaft in the present application, on the one hand, the reduction of The weight of the first casing or the second casing is beneficial to the lightweight setting of the first casing and the second casing, thereby reducing the difficulty of unfolding or folding the first casing and the second casing relative to each other; on the other hand The distribution of the folding mechanism is relatively concentrated, which is beneficial to improve the space utilization rate of the electronic device.

In addition, by setting the deformation direction of the second elastic component to be opposite to the deformation direction of the first elastic component, the second rotating end of the first connecting arm can be offset or reduced by the force of the first elastic component and the second elastic component, thereby ensuring The first connecting arm has better stability. On the other hand, the symmetry of the folded structure can be improved.

In an achievable manner, when the electronic device is in a closed state, the first ball is provided separately from the second rotating end of the first connecting arm. At this time, on the one hand, the first connecting arm is no longer subjected to the damping force of the first elastic member. On the other hand, the length of the second rotating end of the first connecting arm can be set to be short, and the probability of interference between the second rotating end of the first connecting arm and the main shaft is low.

In an achievable manner, the folding mechanism further includes a first fixing frame and a second fixing frame. The first fixing frame is fixedly connected to the first casing. The second fixing frame is fixedly connected to the second casing. The first rotating end of the first connecting arm is rotatably connected to the first fixing frame. The first rotating end of the second connecting arm is rotatably connected to the second fixing frame.

In an achievable manner, the first rotating end of the first connecting arm is provided with a rotating hole. The first fixing frame is provided with a rotating hole. The rotating shaft is rotatably connected with the first fixing frame at least through the rotating hole of the first fixing frame. The rotating shaft and the first connecting arm are rotatably connected at least through the rotating hole of the first rotating end.

In an achievable manner, the folding mechanism further includes a first swing arm and a second swing arm. The first swing arm includes a rotating end and a movable end. The rotating end of the first swing arm is rotatably connected to the main shaft. The movable end of the first swing arm is slidably connected to the first fixing frame. The second swing arm includes a rotating end and a movable end. The rotating end of the second swing arm is rotatably connected to the main shaft. The movable end of the second swing arm is slidably connected to the second fixing frame.

In one implementation, the folding mechanism further includes a plurality of gears. Each gear is rotatably connected to the main shaft. The two adjacent gears mesh with each other, and the rotating end of the first swing arm meshes with the rotating end of the second swing arm through a plurality of gears.

In an achievable manner, the folding mechanism further includes a first support plate and a second support plate. The first support plate is slidably and rotatably connected to the movable end of the first swing arm. The first support plate is rotatably connected to the first fixing frame. The second support plate is slidably and rotatably connected to the movable end of the second swing arm. The second support plate is rotatably connected to the second fixing frame.

When the electronic device is in a flattened state, the first support plate and the second support plate are respectively located on two sides of the main shaft. When the electronic device is in a closed state, the first support plate and the second support plate are disposed opposite to each other.

In an achievable manner, the movable end of the first swing arm includes a first sliding block, a second sliding block, a first rotating block and a second rotating block. The first slider and the second slider are set at intervals. The first rotating block is arranged on the first sliding block. The second rotating block is arranged on the second sliding block. Both the first rotating block and the second rotating block are provided with rotating shaft holes. The rotating shaft hole of the first rotating block and the rotating shaft hole of the second rotating block are arranged oppositely. The first sliding block of the first swing arm is slidably connected to the first sliding groove of the first fixing frame. The second sliding block of the first swing arm is slidably connected to the second sliding groove of the first fixing frame. The first support plate has a first arc-shaped hole. The first arc-shaped hole is located between the first rotating block and the second rotating block of the first swing arm. One end of the pin shaft is rotatably or fixedly connected to the first rotating block. The other end of the pin shaft is rotatably or fixedly connected to the shaft hole of the second rotating block. The middle part of the pin shaft is slidably connected to the first arc hole.

In a second aspect, the present application provides a folding mechanism. The folding mechanism includes a main shaft, a first connecting arm, a first ball and a first elastic component. The second rotating end of the first connecting arm is rotatably connected to the main shaft. The first ball and the first elastic component are both arranged on the main shaft.

When the folding mechanism is in a flat state, the first ball is located between the first elastic component and the second rotating end of the first connecting arm, the first elastic component abuts the first ball, and the first ball abuts the first connecting arm of the first connecting arm. Two rotating ends.

During at least part of the unfolding or folding process of the folding mechanism, the second rotating end of the first connecting arm rotates relative to the main shaft, the first elastic component is deformed, and the first ball rolls relative to the second rotating end of the first connecting arm. The deformation of the first elastic component includes the following situations: one is that when the folding mechanism is in a flat state, the first elastic component is in a natural state (that is, the compression amount of the first elastic component is zero), and the folding mechanism is unfolding. Or during at least part of the folding process, the amount of compression of the first elastic component is changed to be in a compressed state. The other is that when the folding mechanism is in a flattened state, the first elastic component is in a compressed state (that is, the compression amount of the first elastic component is not zero), and during at least part of the unfolding or folding process of the folding mechanism, the first elastic component is in a compressed state (that is, the compression amount of the first elastic component is not zero). The amount of compression of the elastic component can be varied or constant. In other embodiments, the deformation of the first elastic component may also include other situations.

It can be understood that, when the folding mechanism is unfolding or folding at least in part, the first elastic component is deformed, and the first elastic component can press the first ball to the second rotating end of the first connecting arm. The frictional force between the first ball and the second rotating end of the first connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the folding mechanism, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the folding mechanism to a certain extent. When the folding mechanism is in a flattened state, the stability of the folding mechanism is better.

In an achievable manner, when the folding mechanism is in a flattened state, the first elastic component is in a compressed state.

It can be understood that, when the folding mechanism is in a flattened state, the first elastic component can press the first ball toward the second rotating end of the first connecting arm. The frictional force between the first ball and the second rotating end of the first connecting arm can be greatly increased. In this way, when the folding mechanism is in the flattened state, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the folding mechanism to a certain extent. When the folding mechanism is in a flattened state, the stability of the folding mechanism is better.

When the folding mechanism is in the flattened state, the first ball abuts the first side surface.

During the unfolding or folding process of the folding mechanism, the first ball rolls relative to the first projection.

It can be understood that, when the folding mechanism starts to fold from the flattened state to the closed state, the first ball rolls relative to the first projection. When the folding angle of the folding mechanism is small, under the action of the first projection of the first connecting arm, the first ball can roll back to the lower part of the first projection of the first linking arm. Therefore, through the cooperation between the first ball and the first bump, when the folding angle of the electronic device is small, the electronic device can be automatically unfolded to a flattened state.

In addition, when the folding mechanism is switched from the closed state to the flattened state, the first ball rolls relative to the first projection. When the flattening angle of the folding mechanism is large (close to the flattened state), the first ball rolls from the high position of the first bump of the first connecting arm to the low position of the first bump of the first connecting arm. The rolling speed of the balls is fast, allowing the user to experience the feeling of being flattened in place.

In an achievable manner, the first protrusion of the first connecting arm has a first inclined surface. The first inclined surface is connected to the first side surface of the first connecting arm. When the folding mechanism is in a flat state, the first balls abut against the first inclined surface of the first connecting arm.

It can be understood that when the first elastic component can exert a force on the first inclined surface of the first connecting arm through the first ball, the first connecting arm can receive a supporting force (also called flattening) along the thickness direction of the folding mechanism. support). This supporting force can prevent the second rotating end of the first connecting arm from rotating relative to the main shaft to a certain extent, that is, this supporting force can prevent the folding mechanism from folding to a certain extent. Therefore, the supporting force can ensure that the folding mechanism has better stability when it is in a flattened state.

In an achievable manner, the second rotating end of the first connecting arm includes a second protrusion. The second protrusion is protruded on the first side surface of the first connecting arm. The second bump is spaced apart from the first bump. When the folding mechanism is in the flattened state, at least a portion of the first ball is located between the first bump and the second bump.

In an achievable manner, the folding mechanism further includes a second connecting arm and a second ball. The second rotating end of the second connecting arm is rotatably connected to the main shaft. The second ball is arranged on the main shaft.

When the folding mechanism is in a flattened state, the second ball is located between the first elastic component and the second rotating end of the second connecting arm, the first elastic component abuts the second ball, and the second ball abuts the first ball of the second connecting arm. Two rotating ends.

During at least part of the unfolding or folding process of the folding mechanism, the second rotating end of the second connecting arm rotates relative to the main shaft, the first elastic component is deformed, and the second ball rolls relative to the second rotating end of the second connecting arm.

It can be understood that, when the folding mechanism is unfolding or folding at least in part, the first elastic component is deformed, and the first elastic component can press the second ball to the second rotating end of the second connecting arm. The frictional force between the second ball and the second rotating end of the second connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the folding mechanism, the second rotating end of the second connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the folding mechanism to a certain extent. When the folding mechanism is in a flat state, the stability of the electronic device is better.

When the folding mechanism is in a flat state, the third ball is located between the second elastic component and the second rotating end of the first connecting arm, the second elastic component abuts the third ball, and the third ball abuts the first connecting arm of the first connecting arm. Two rotating ends.

During at least part of the unfolding or folding process of the folding mechanism, the second elastic component is deformed, the third ball rolls relative to the second rotating end of the first connecting arm, and the deformation direction of the second elastic component is opposite to the deformation direction of the first elastic component . The deformation of the second elastic component includes the following situations: one is that when the folding mechanism is in a flattened state, the second elastic component is in a natural state (that is, the compression amount of the second elastic component is zero), and the folding mechanism is in the unfolded state. Or during at least part of the folding process, the amount of compression of the second elastic component is changed so as to be in a compressed state. The other is that when the folding mechanism is in a flattened state, the second elastic component is in a compressed state (that is, the compression amount of the second elastic component is not zero), and during at least part of the unfolding or folding process of the folding mechanism, the second elastic component is in a compressed state (that is, the compression amount of the second elastic component is not zero). The amount of compression of the elastic component may or may not vary. In other embodiments, the deformation of the second elastic component may also include other situations.

In an achievable manner, when the folding mechanism is in a closed state, the first rolling ball is provided separately from the second rotating end of the first connecting arm.

It can be understood that when the folding mechanism is unfolding or folding at least part of the process, the second elastic component is deformed, and the second elastic component can press the third ball to the second rotating end of the first connecting arm. The frictional force between the third ball and the second rotating end of the first connecting arm can be greatly increased. In this way, during at least part of the unfolding or folding process of the folding mechanism, the second rotating end of the first connecting arm cannot easily rotate relative to the main shaft. Therefore, this frictional force can hinder the folding of the folding mechanism to a certain extent. When the folding mechanism is in a flattened state, the stability of the folding mechanism is better. It should be noted that, when the user needs to fold the folding mechanism, the user exerts a force on the folding mechanism, and when the force exerted by the user does not overcome the frictional force, the folding mechanism cannot be folded.

In addition, compared with the solution in which the third ball and the second elastic component are arranged in the first housing or the second housing, by arranging both the third ball and the second elastic component in the main shaft in the present application, on the one hand, the reduction of The weight of the first casing or the second casing is beneficial to the lightweight setting of the first casing and the second casing, thereby reducing the difficulty of unfolding or folding the first casing and the second casing relative to each other; on the other hand The distribution of the folding mechanism is relatively concentrated, which is beneficial to improve the space utilization rate of the folding mechanism.

In an achievable manner, when the folding mechanism is in a closed state, the first rolling ball is provided separately from the second rotating end of the first connecting arm. At this time, on the one hand, the first connecting arm is no longer subjected to the damping force of the first elastic member. On the other hand, the length of the second rotating end of the first connecting arm can be set to be short, and the probability of interference between the second rotating end of the first connecting arm and the main shaft is low.

In an achievable manner, the folding mechanism further includes a first fixing frame and a second fixing frame. The first fixing frame is used for fixedly connecting the first casing. The second fixing frame is used for fixedly connecting the second casing. The first rotating end of the first connecting arm is rotatably connected to the first fixing frame. The first rotating end of the second connecting arm is rotatably connected to the second fixing frame.

When the folding mechanism is in a flattened state, the first support plate and the second support plate are respectively located on two sides of the main shaft. When the folding mechanism is in the closed state, the first support plate and the second support plate are arranged opposite to each other.

Description of drawings

1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application in a flattened state;

Fig. 2 is a partial exploded schematic view of the electronic device shown in Fig. 1;

3 is a schematic structural diagram of the electronic device shown in FIG. 1 in a closed state;

4 is a partial cross-sectional schematic diagram of the electronic device shown in FIG. 3 at the line A1-A1;

FIG. 5 is a partially exploded schematic view of the folding device shown in FIG. 2;

Figure 6 is an exploded schematic view of the folding mechanism shown in Figure 5;

Fig. 7 is a partial exploded schematic view of the main shaft shown in Fig. 6;

Figure 8a is a schematic view of the main shaft shown in Figure 7 at another angle;

Fig. 8b is a partial structural schematic diagram of the main shaft shown in Fig. 6;

Figure 9 is a schematic structural diagram of the first end of the base shown in Figure 8a;

Figure 10 is a schematic structural diagram of the first housing shown in Figure 7;

FIG. 11 is a schematic cross-sectional view of the part of the main shaft shown in FIG. 8b along the line A2-A2;

Figure 12 is a schematic cross-sectional view of the part of the main shaft shown in Figure 8b along the line A3-A3;

Figure 13 is a schematic cross-sectional view of the part of the main shaft shown in Figure 8b along the line A4-A4;

Figure 14 is a schematic cross-sectional view of the part of the main shaft shown in Figure 8b along the line A5-A5;

Figure 15 is a schematic cross-sectional view of the part of the main shaft shown in Figure 8b along the line A6-A6;

FIG. 16 is a schematic cross-sectional view of the part of the main shaft shown in FIG. 8b along the line A7-A7;

FIG. 17 is a schematic structural diagram of the first fixing frame and the second fixing frame shown in FIG. 6;

FIG. 18 is a schematic structural diagram of the first fixing frame shown in FIG. 17 at another angle;

Fig. 19 is a partial structural schematic diagram of the folding device shown in Fig. 2;

Figure 20 is an enlarged schematic view of the partial folding device shown in Figure 19 at A8;

21 is a schematic structural diagram of the first connecting arm and the second connecting arm shown in FIG. 6;

Fig. 22 is a schematic structural diagram of the first connecting arm and the second connecting arm shown in Fig. 21 at another angle;

FIG. 23 is a schematic structural diagram of the first connecting arm and the second connecting arm shown in FIG. 21 at another angle;

Fig. 24 is a partial structural schematic diagram of the folding device shown in Fig. 2;

Fig. 25 is a partial structural schematic diagram of the folding device shown in Fig. 2;

Fig. 26 is a partial structural schematic diagram of the folding device shown in Fig. 2;

Figure 27 is a sectional view of the partial folding device shown in Figure 26 at A9-A9;

Figure 28 is a cross-sectional view of the partial folding device shown in Figure 27 in a closed state;

Figure 29 is an exploded schematic view of the first stop member shown in Figure 6;

Figure 30 is a schematic structural diagram of the first stopper and the second stopper shown in Figure 6;

Fig. 31 is a partial structural view of the folding device shown in Fig. 2;

Figure 32 is an enlarged schematic view of the partial folding device shown in Figure 31 at B1;

Figure 33a is a schematic structural diagram of the partial folding device shown in Figure 31 in a closed state;

Figure 33b is an enlarged schematic view of the partial folding device 1 shown in Figure 33a at M;

Fig. 34 is a partial structural view of the folding device shown in Fig. 2;

Figure 35 is an enlarged schematic view of the partial folding device shown in Figure 34 at B2;

Figure 36 is a schematic structural diagram of the partial folding device shown in Figure 34 in a closed state;

Figure 37 is a schematic structural diagram of the first swing arm, the gear module and the second swing arm shown in Figure 6;

Fig. 38 is a partial structural view of the folding device shown in Fig. 2;

Figure 39 is an enlarged schematic view of the partial folding device shown in Figure 38 at B3;

Fig. 40 is a partial structural schematic diagram of the folding device shown in Fig. 2;

Figure 41 is a cross-sectional view of the partial folding device shown in Figure 38 at line B4-B4;

Figure 42 is a schematic structural diagram of the first support plate and the second support plate shown in Figure 6;

Figure 43 is a schematic structural diagram of the first support plate and the second support plate shown in Figure 42 at another angle;

Figure 44 is an enlarged schematic view of the first support plate described in Figure 43 at B5;

Figure 45 is a schematic structural diagram of the folding device shown in Figure 2;

Figure 46 is a partial cross-sectional schematic view of the partial folding device shown in Figure 45 at the line B6-B6;

Figure 47 is a sectional view of the partially folding device shown in Figure 46 in a closed state;

Figure 48 is a partial cross-sectional schematic view of the partial folding device shown in Figure 45 at the line B7-B7;

Fig. 49 is a cross-sectional view of the partially folding device shown in Fig. 48 in a closed state.

Detailed ways

The following embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" may be detachable connection or non-detachable connection. A connection; it can be a direct connection or an indirect connection through an intermediary. Wherein, the "fixed connection" may be connected to each other and the relative positional relationship after the connection remains unchanged. "Rotationally connected" may be connected to each other and capable of relative rotation after the connection. A "sliding connection" may be connected to each other and capable of sliding relative to each other after connection. "Rolling" can be a compound motion of rotation and displacement. Orientation terms mentioned in the embodiments of the present application, for example, "top", "bottom", "inside", "outside", etc., only refer to the directions of the drawings, therefore, the orientation terms used are for better, To clearly describe and understand the embodiments of the present application, rather than indicating or implying that the indicated devices or elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation on the embodiments of the present application. "Plurality" means at least two.

Please refer to FIGS. 1 to 4 . FIG. 1 is a schematic structural diagram of an electronic device 100 provided in an embodiment of the present application in a flattened state. FIG. 2 is a partially exploded schematic view of the electronic device 100 shown in FIG. 1 . FIG. 3 is a schematic structural diagram of the electronic device 100 shown in FIG. 1 in a closed state. FIG. 4 is a partial cross-sectional schematic diagram of the electronic device 100 shown in FIG. 3 at the line A1-A1.

The electronic device 100 includes a folding device 1 and a flexible screen 2 . The flexible screen 2 is used to display images. The flexible screen 2 is fixedly connected to the folding device 1 . The folding device 1 can make the flexible screen 2 unfold or fold, so that the electronic device 100 can be converted between a flattened state and a closed state. It should be understood that when the electronic device 100 is in a flattened state, correspondingly, the folding device 1 is also in a flattened state. When the electronic device 100 is in a closed state, correspondingly, the folding device 1 is also in a closed state. In this way, when the electronic device 100 is in a flattened state, the electronic device 100 has a larger display area, and the user's viewing experience is better. When the electronic device 100 is in the closed state, the plane size of the electronic device 100 is small, which is convenient for the user to carry. The electronic device 100 may be a foldable electronic product such as a mobile phone, a tablet computer, a personal computer, and a notebook computer. The electronic device 100 of the embodiment shown in FIGS. 1 to 4 is described by taking a mobile phone as an example.

For convenience of description, the thickness direction of the electronic device 100 is defined as the Z-axis direction, and the extension direction of the rotation axis of the electronic device 100 is defined as the Y-axis direction, that is, the width direction of the electronic device 100 is the Y-axis direction. The direction perpendicular to the Y-axis direction and the Z-axis direction is the X-axis direction, that is, the length direction of the electronic device 100 is the X-axis. It can be understood that the coordinate system of the electronic device 100 can also be flexibly set according to specific requirements. In this embodiment, when the direction of the rotation axis of the electronic device 100 is the Y-axis direction, the folding device 1 can relatively unfold or fold the flexible screen 2 along the Y-axis direction. In this way, when the electronic device 100 is in the closed state, the size of the electronic device 100 in the X-axis direction becomes smaller.

Please refer to FIG. 5 in combination with FIGS. 1 to 4 . FIG. 5 is a partial exploded schematic view of the folding device 1 shown in FIG. 2 . The folding device 1 includes a folding mechanism 101 , a first casing 102 and a second casing 103 . The folding mechanism 101 is connected between the first casing 102 and the second casing 103 . The folding mechanism 101 is used to relatively unfold or fold the first casing 102 and the second casing 103 .

As shown in FIG. 1 and FIG. 2 , when the first housing 102 and the second housing 103 are relatively unfolded to a flat state, the electronic device 100 is in the flat state, and the first housing 102 and the second housing 103 may be in a flat state. 180°. In other embodiments, the first housing 102 and the second housing 103 may also have a slight deviation relative to 180°, such as 165°, 177°, or 185°.

As shown in FIG. 3 and FIG. 4 , when the first casing 102 and the second casing 103 are folded to a closed state, the electronic device 100 is in a closed state, and the first casing 102 and the second casing 103 can be folded together. And there is no large gap between the first casing 102 and the second casing 103 . In this way, the appearance experience of the electronic device 100 is better, and the performance of waterproof, dustproof, and foreign object prevention is better. The case where the first casing 102 and the second casing 103 are closed includes the case where the two abut against each other, and may also include the case where there is a small gap between the two. When there is a small gap between the first casing 102 and the second casing 103 , some foreign objects outside the electronic device 100 will not enter between the first casing 102 and the second casing 103 through the gap.

The first casing 102 and the second casing 103 can also be relatively unfolded or folded to an intermediate state, so that the electronic device 100 is in an intermediate state, and the intermediate state can be any state between the unfolded state and the closed state.

Please refer to FIGS. 1 , 2 and 4 again. The flexible screen 2 includes a first non-bending portion 21 , a bending portion 22 and a second non-bending portion 23 . The bending portion 22 is connected between the first non-bending portion 21 and the second non-bending portion 23 . Both FIGS. 1 and 2 simply and schematically distinguish the first non-bending part 21 , the bending part 22 and the second non-bending part 23 with dotted lines. The first non-bending portion 21 of the flexible screen 2 is fixedly connected to the first casing 102 . The second non-bending portion 23 is fixedly connected to the second casing 103 . During the relative unfolding or folding of the first casing 102 and the second casing 103 , the first casing 102 can drive the first non-bending part 21 to move, and the second casing 103 can drive the second non-bending part 23 When moving, the first non-bending part 21 and the second non-bending part 23 are relatively unfolded or folded, and the bending part 22 can be deformed.

It can be understood that, since the first non-bending portion 21 is fixedly connected to the first casing 102 and the second non-bending portion 23 is fixedly connected to the second casing 103 , the first casing 102 is opposite to the second casing 103 When unfolding or folding, the relative unfolding and folding actions between the first non-bending part 21 and the second non-bending part 23 can be accurately controlled, so that the folding process and movement shape of the flexible screen 2 are controllable, and the reliability is relatively high. high.

As shown in FIGS. 1 and 2 , when the first casing 102 and the second casing 103 are relatively unfolded to a flattened state (that is, the electronic device 100 is in a flattened state), the first non-bending portion of the flexible screen 2 21. The bending portion 22 and the second non-bending portion 23 may be 180°. In other embodiments, the first non-bending portion 21 , the bending portion 22 , and the second non-bending portion 23 may also have a slight deviation relative to 180°, such as 165°, 177°, or 185°.

As shown in FIG. 3 and FIG. 4 , when the first casing 102 and the second casing 103 are in a closed state (ie, the electronic device is in a closed state), the first non-bending portion 21 and the second non-bending portion 23 The bent portions 22 are substantially parallel and arranged close to each other, and the bent portions 22 are bent. At this time, the shape of the flexible screen 2 is roughly in the shape of a "water drop". In addition, the flexible screen 2 is located between the first casing 102 and the second casing 103 .

Please refer to FIG. 6 , which is an exploded schematic view of the folding mechanism 101 shown in FIG. 5 . The folding mechanism 101 includes a main shaft 11, a first fixing frame 12, a second fixing frame 13, a first supporting plate 14, a second supporting plate 15, a first connecting arm 16, a second connecting arm 17, a first stop member 18, The second stop member 19 , the first swing arm 31 , the second swing arm 32 and the gear module 33 . Exemplarily, the extending direction of the length of the main shaft 11 is the Y-axis direction.

Among them, the first fixing frame 12 , the second fixing frame 13 , the first connecting arm 16 , the second connecting arm 17 , the first stop member 18 , the second stop member 19 , the first swing arm 31 , the second swing arm 32 and the gear module 33 can jointly form a first connection assembly. Exemplarily, the first connecting assembly may serve as the bottom connecting assembly of the folding mechanism 101 . The folding mechanism 101 may also include a second connection assembly. The second connecting member may serve as the top connecting member of the folding mechanism 101 . The folding mechanism 101 may further include a third connecting component, and the third connecting component may serve as a middle connecting component of the folding mechanism 101 . The third connection assembly may not include the first stopper 18 , the second stopper 19 or the gear module 33 , or may include the first stopper 18 , the second stopper 19 or the gear module 33 . The first connecting assembly, the second connecting assembly and the third connecting assembly are all connected with the main shaft 11 , the first support plate 14 and the second support plate 15 .

Exemplarily, the second connection component and the first connection component may be of the same or similar structure, a symmetrical or partially symmetrical structure, or a different structure. The third connecting assembly is located between the first connecting assembly and the second connecting assembly. In some embodiments, the second connecting assembly and the first connecting assembly are centrally symmetric structures, the basic design of the component structure of the second connecting assembly, the design of the connection relationship between the components, and the connection relationship between the components and other structures other than the component. For design, reference can be made to the relevant solutions of the first connecting assembly, while allowing the second connecting assembly to be slightly different from the first connecting assembly in terms of the detailed structure or positional arrangement of components.

Exemplarily, the second connecting assembly may include a first fixing frame 12b, a second fixing frame 13b, a first connecting arm 16b, a second connecting arm 17b, a first stop 18b, a second stop 19b, a first stop The swing arm 31b, the second swing arm 32b and the gear module 33b. For the structure of each component of the second connection assembly and the connection relationship between each component and the main shaft 11 , the first support plate 14 and the second support plate 15 , reference may be made to the relevant description of the first connection assembly. The third connecting assembly may include a first fixing frame 12c, a second fixing frame 13c, a first connecting arm 16c, a second connecting arm 17c, a first swing arm 31c, and a second swing arm 32c. For the structure of each component of the third connection assembly and the connection relationship between each component and the main shaft 11 , the first support plate 14 and the second support plate 15 , reference may be made to the relevant description of the first connection assembly. This embodiment of the present application will not be repeated here. In other embodiments, the folding mechanism 101 may also include a first connecting component and other connecting components, and the structures of the other connecting components may be the same as or different from those of the first connecting component, which are not strictly limited in this application.

It should be understood that the first fixing frame 12 of the first connecting assembly, the first fixing frame 12b of the second connecting assembly and the first fixing frame 12c of the third connecting assembly may be independent structural members, or may be an integrated structural member of multiple parts. The second fixing frame 13 of the first connecting assembly, the second fixing frame 13b of the second connecting assembly, and the second fixing frame 13c of the third connecting assembly may be independent structural members, or may be a plurality of integrated structural members. part.

Please refer to FIG. 7 and FIG. 8 a , in conjunction with FIG. 6 , FIG. 7 is a partial exploded schematic view of the main shaft 11 shown in FIG. 6 . Fig. 8a is a schematic view of the main shaft 11 shown in Fig. 7 at another angle. The main shaft 11 includes a base 111 , a first housing 112 , a second housing 113 , a third housing 114 and a main housing 115 . The base 111 has a first support surface 104 . The first support surface 104 is also the first support surface of the spindle 11 . The first support surface 104 may be flat.

Wherein, the base 111 may be an integrally formed structural member, or an integral structure may be formed by assembling. The base 111 includes a first end portion 111a, a middle portion 111b and a second end portion 111c which are connected in sequence. It should be noted that, in order to describe the specific structure of the base 111 clearly and conveniently, FIGS. 7 and 8a schematically show the first end 111a, the middle 111b and the second end 111c. The first end portion 111a of the base 111 may be connected with the first connection component. The second end portion 111c of the base 111 may be connected with the second connecting component. The middle portion 111b of the base 111 may be connected with the third connection component.

Exemplarily, the first end 111a of the base 111 and the second end 111c of the base 111 may have the same or similar structures, symmetrical or partially symmetrical structures, or different structures. In some embodiments, the first end 111a of the base 111 and the second end 111c of the base 111 are center-symmetrical structures. In this way, the overall structure of the base 111 is relatively simple and the processing cost is low. In addition, it is beneficial to improve the symmetry of the base 111 . It should be understood that the basic design of the component structure of the second end portion 111c of the base 111 , the design of the connection relationship between the components, and the design of the connection relationship between the components and other structures other than the assembly can all refer to the first end of the base 111 . The related solution of 111a also allows the second end 111c of the base 111 and the first end 111a of the base 111 to be slightly different in the detailed structure or positional arrangement of the components.

Exemplarily, the second housing 113 and the first housing 112 may have the same or similar structures, symmetrical or partially symmetrical structures, or different structures. In some embodiments, the second housing 113 and the first housing 112 may be centrally symmetric structures. In this way, the overall structure of the main shaft 11 is relatively simple, and the processing cost is low. In addition, it is beneficial to improve the symmetry of the main shaft 11 . It should be understood that the basic design of the component structure of the second housing 113, the design of the connection relationship between the components, and the design of the connection relationship between the components and other structures other than the components can all refer to the relevant solutions of the first housing 112. The second casing 113 is slightly different from the first casing 112 in the detailed structure or positional arrangement of components.

Please refer to FIG. 8b, in conjunction with FIG. 7 and FIG. 8a, FIG. 8b is a partial structural schematic diagram of the main shaft 11 shown in FIG. 6. As shown in FIG. The first shell 112 is fixedly connected to the first end 111 a of the base 111 . The first housing 112 faces away from the first supporting surface 104 of the base 111 . Exemplarily, the first housing 112 is fixedly connected to the first end 111a of the base 111 by passing fasteners (screws, pins or screws) through the first housing 112 and the first end 111a of the base 111 . In other embodiments, the first shell 112 and the first end 111a of the base 111 can also be fixedly connected to each other by means of bonding, welding, or the like.

Please refer to FIG. 8b again, and as shown in FIG. 7 and FIG. 8a, the second housing 113 is fixedly connected to the second end 111c of the base 111. At this time, when the second end portion 111c of the base 111 is matingly connected with the second connecting assembly, the second housing 113 can be used to cover some parts of the second connecting assembly to protect the second connecting assembly. In addition, the third housing 114 is fixedly connected to the middle portion 111 b of the base 111 . At this time, when the middle portion 111b of the base 111 is matingly connected with the third connecting assembly, the third housing 114 can be used to cover some parts of the third connecting assembly to protect the third connecting assembly.

Please refer to FIG. 4 again, combined with FIG. 7 and FIG. 8 a , the main casing 115 is fixedly connected to the base 111 and covers the first casing 112 , the second casing 113 and the third casing 114 . At this time, the first casing 112 , the second casing 113 and the third casing 114 are located between the base 111 and the main casing 115 . In this way, the overall strength of the main shaft 11 is better. Exemplarily, the main housing 115 may be fixedly connected to the base 111 by means of snap-fit. In addition, when the electronic device 100 is in the closed state, part of the main housing 115 is exposed to the outside of the electronic device 100 . By setting the outer surface of the main casing 115 to be smooth and less rough, it is beneficial to improve the external consistency of the electronic device 100 , thereby improving the user experience of the electronic device 100 .

Please refer to FIG. 9. FIG. 9 is a schematic structural diagram of the first end portion 111a of the base 111 shown in FIG. 8a. The portion of the first end 111a of the base 111 facing away from the first support surface 104 may form a plurality of groove structures and bump structures. These structures enable the first end 111a of the base 111 to form a plurality of mating surfaces, such as a concave first curved surface 1111 (the first curved surface 1111 may include a plurality of concave curved surfaces), a convex first curved surface 1112, The convex second curved surface 1113, the concave second curved surface 1114 (the second curved surface 1114 may include multiple concave arc surfaces), and the concave third curved surface 1115 (the third curved surface 1115 may include multiple concave curved surfaces) arc).

Please refer to FIG. 10 , which is a schematic structural diagram of the first housing 112 shown in FIG. 7 . The first housing 112 is bent to form an inner space 112 a of the first housing 112 . The inner space 112a is located inside the first housing 112 . The inner space 112a of the first housing 112 may form a plurality of groove structures and protrusion structures, and these structures enable the first housing 112 to form a plurality of mating surfaces. For example, a concave first curved surface 1121 (the first curved surface 1121 may include a plurality of concave curved surfaces), a concave first curved surface 1122 , a concave second curved surface 1123 , and a concave second curved surface 1124 (The second curved surface 1124 may include a plurality of concave arc surfaces) and a concave third curved surface 1125 (the third curved surface 1125 may include a plurality of concave arc surfaces).

In addition, the first housing 112 is further provided with a plurality of first rotating shaft grooves 1126 arranged at intervals and a plurality of second rotating shaft grooves 1127 arranged at intervals. The third curved surface 1125 is located between the first shaft groove 1126 and the second shaft groove 1127 . The plurality of first shaft grooves 1126 and the plurality of second shaft grooves 1127 are respectively disposed in a one-to-one correspondence with each other, that is, a first shaft groove 1126 and a second shaft groove 1127 are oppositely disposed.

It can be understood that the mating surface of the first housing 112 and the mating surface of the first end 111a of the base 111 can cooperate with each other, thereby forming a plurality of connecting structures of the main shaft 11 together for connecting with the first connecting component. In this way, when the first end portion 111a of the base 111 is matingly connected with the first connecting assembly, the first housing 112 can be used to cover some parts of the first connecting assembly to protect the first connecting assembly.

Please refer to FIG. 11 , in conjunction with FIG. 9 and FIG. 10 , FIG. 11 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A2-A2. The main shaft 11 has a first receiving space 1161 . A part of the first end 111a of the base 111 and a part of the first casing 112 together form a first receiving space 1161 . A part of the surface of the first receiving space 1161 includes a part of the first curved surface 1111 of the base 111 and a part of the first curved surface 1121 of the first housing 112 .

Please refer to FIG. 12 in combination with FIG. 9 and FIG. 10 . FIG. 12 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A3-A3. The main shaft 11 has a first rolling groove 1162 and a second rolling groove 1163 . Part of the first curved surface 1111 of the base 111 and part of the first curved surface 1121 of the first housing 112 together define a first rolling groove 1162 and a second rolling groove 1163 .

Please refer to FIG. 13 in combination with FIG. 9 and FIG. 10 . FIG. 13 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A4-A4. The main shaft 11 also has a first arc-shaped groove 1164 . One end of the first arc groove 1164 communicates with the outer space of the main shaft 11 . The center of the first arc groove 1164 is far away from the first housing 112 and close to the base 111 . The first arc surface 1112 of the base 111 and the first arc surface 1122 of the first housing 112 together define a first arc groove 1164 .

In addition, the main shaft 11 also has a second arc-shaped groove 1165 . One end of the second arc-shaped groove 1165 communicates with the outer space of the main shaft 11 . The center of the second arc groove 1165 is far away from the first housing 112 and close to the base 111 . The second arc surface 1113 of the base 111 and the second arc surface 1123 of the first housing 112 together define a second arc groove 1165 .

Please refer to FIG. 14 , in conjunction with FIG. 9 and FIG. 10 , FIG. 14 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A5-A5. The main shaft 11 also has a third rolling groove 1166 and a fourth rolling groove 1167 . Part of the second curved surface 1114 of the base 111 and part of the second curved surface 1124 of the first housing 112 together define a third rolling groove 1166 and a fourth rolling groove 1167 .

Please refer to FIG. 15 , in conjunction with FIG. 9 and FIG. 10 , FIG. 15 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A6-A6. The main shaft 11 also has a second receiving space 1168 . A portion of the first end portion 111 a of the base 111 and a portion of the first housing 112 together form a second receiving space 1168 . Wherein, part of the surface of the second receiving space 1168 includes part of the second curved surface 1114 of the base 111 and part of the second curved surface 1124 of the first housing 112.

Please refer to FIG. 16 in combination with FIG. 9 and FIG. 10 . FIG. 16 is a schematic cross-sectional view of a part of the main shaft 11 shown in FIG. 8b along the line A7-A7. The main shaft 11 also has a third accommodating space 1169 . The third curved surface 1115 of the base 111 and the third curved surface 1125 of the first housing 112 together define a third receiving space 1169 . Both ends of the third accommodating space 1169 communicate with the outer space of the main shaft 11 .

Exemplarily, the first accommodating space 1161 , the first rolling groove 1162 , the first arcuate groove 1164 , the third rolling groove 1166 and the second accommodating space 1168 communicate with each other.

Exemplarily, the first accommodating space 1161 , the second rolling groove 1163 , the second arcuate groove 1165 , the fourth rolling groove 1167 and the second accommodating space 1168 communicate with each other.

Please refer to FIGS. 17 and 18 . FIG. 17 is a schematic structural diagram of the first fixing frame 12 and the second fixing frame 13 shown in FIG. 6 . FIG. 18 is a schematic structural diagram of the first fixing frame 12 shown in FIG. 17 from another angle. The first fixing frame 12 includes a top surface 121 , a bottom surface 122 , a first side surface 123 and a second side surface 124 . The top surface 121 is disposed opposite to the bottom surface 122 . The first side surface 123 is disposed opposite to the second side surface 124 . The first side surface 123 and the second side surface 124 are located between the top surface 121 and the bottom surface 122 .

The first fixing frame 12 is provided with a first side hole 1251 and a second side hole 1252 arranged at intervals. The first side hole 1251 and the second side hole 1252 both form openings on the top surface 121 , the bottom surface 122 and the first side surface 123 . In addition, the first fixing frame 12 is further provided with a first rotating hole 1253 , a second rotating hole 1254 and a rotating slot 1255 . The rotation groove 1255 forms an opening on the bottom surface 122 . The first rotation hole 1253 communicates with the first side hole 1251 . The second rotation hole 1254 communicates with the first side hole 1251 and the second side hole 1252 . The rotating groove 1255 communicates with the second side hole 1252 . The first rotating hole 1253 and the second rotating hole 1254 are disposed opposite to each other. The second rotation hole 1254 is disposed opposite to the rotation slot 1255 .

The first fixing frame 12 may also be provided with a first sliding groove 1261 and a second sliding groove 1262 which are disposed opposite to each other. The first sliding groove 1261 and the second sliding groove 1262 both form openings on the first side surface 123 . The first fixing frame 12 is further provided with a first movable notch 1263 . The first movable notch 1263 forms openings on the top surface 121 , the bottom surface 122 and the first side surface 123 . The first movable gap 1263 communicates with the first sliding groove 1261 and the second sliding groove 1262 .

Wherein, the first fixing frame 12 is further provided with a first arc-shaped groove 127 . The first arc-shaped groove 127 forms an opening on the top surface 121 . Wherein, the first arc-shaped groove 127 may also form an opening on the surface connecting the first side surface 123 and the second side surface 124 . The number of the first arc grooves 127 may be one or more.

In addition, the first fixing frame 12 may also be provided with a fastening hole 128 . The number of the fastening holes 128 may be one or more.

In this embodiment, the first fixing frame 12 and the second fixing frame 13 may have the same structure, mirror-symmetrical structure, partial mirror-symmetrical structure, centrosymmetrical structure, partial centrally-symmetrical structure or different structures, which are not strictly limited in this application . In this embodiment, the second fixing frame 13 and the first fixing frame 12 are partially mirror-symmetrical. For the setting method of the structure of the second fixing frame 13 , please refer to the setting method of the structure of the first fixing frame 12 . For example, the second fixing frame 13 is also provided with a first side hole 1351 , a second side hole 1352 , a first rotation hole 1353 , a second rotation hole 1354 and a rotation slot 1355 . Specifically, this embodiment is not repeated here.

Please refer to FIG. 19 and FIG. 20 , FIG. 19 is a partial structural diagram of the folding device 1 shown in FIG. 2 . FIG. 20 is an enlarged schematic view of the partial folding device 1 shown in FIG. 19 at A8. The first fixing frame 12 is fixedly connected to the first casing 102 . Exemplarily, the first housing 102 is provided with a first fixing groove 1025 . The first housing 102 includes a first part 1021 , a second part 1022 , a third part 1023 and a fourth part 1024 . The second part 1022 is connected to the first part 1021 . The height of the first part 1021 in the Z-axis direction is greater than the height of the second part 1022 in the Z-axis direction, that is, there is a height difference between the first part 1021 and the second part 1022 in the Z-axis direction. At this time, the first portion 1021 and the second portion 1022 are substantially stepped in the Z-axis direction. In addition, one side of the third portion 1023 is connected to the first portion 1021 , and one side is connected to the second portion 1022 . The fourth part 1024 is disposed opposite to the third part 1023 . One side of the fourth portion 1024 is connected to the first portion 1021 , and one side is connected to the second portion 1022 . In this way, the side surface 1021 a of the first part 1021 , the surface 1022 a of the second part 1022 , the side surface 1023 a of the third part 1023 and the side surface 1024 a of the fourth part 1024 enclose the first fixing groove 1025 .

The first fixing frame 12 is located in the first fixing groove 1025 and is fixedly connected to the first casing 102 . Wherein, by passing fasteners (screws, pins or screws) through the fastening holes 128 of the first fixing frame 12 and the fastening holes 1022 of the first housing 102 (refer to FIG. 5 ), the first fixing frame is 12 is fixedly connected to the first casing 102 . The top surface 121 of the first fixing frame 12 faces away from the bottom wall of the first fixing groove 1025 . The bottom surface 122 of the first fixing frame 12 faces the bottom wall of the first fixing groove 1025 .

In other embodiments, the first fixing frame 12 can also be installed in the first fixing groove 1025 by welding, bonding, snap connection, or the like.

In other embodiments, the first fixing frame 12 and the first housing 102 may also be provided with a matching structure of the positioning column and the positioning hole, so as to improve the connection stability between each other. The present application does not strictly limit the connection structure between the first fixing frame 12 and the first housing 102 .

In this embodiment, the connection relationship between the second fixing frame 13 and the second casing 103 may refer to the connection relation between the first fixing frame 12 and the first casing 102 . The details are not repeated here.

Please refer to FIG. 21 and FIG. 22 . FIG. 21 is a schematic structural diagram of the first connecting arm 16 and the second connecting arm 17 shown in FIG. 6 . FIG. 22 is a schematic structural diagram of the first connecting arm 16 and the second connecting arm 17 shown in FIG. 21 at another angle. The first connecting arm 16 includes a first rotating end 16a and a second rotating end 16b connected to the first rotating end 16a.

In this embodiment, the first rotating end 16a of the first connecting arm 16 is provided with a side hole 168 , a first rotating hole 1691 and a second rotating hole 1692 . The side hole 168 divides the first rotating end 16a of the first connecting arm 16 into a first rotating block 1681 and a second rotating block 1682 . The first rotating hole 1691 is provided on the first rotating block 1681 . The second rotating hole 1692 is provided on the second rotating block 1682 . Both the first rotation hole 1691 and the second rotation hole 1692 communicate with the side hole 168 , and the first rotation hole 1691 and the second rotation hole 1692 are disposed opposite to each other. In other embodiments, the first rotating end 16a of the first connecting arm 16 may also adopt other structures.

In this embodiment, the second rotating end 16 b of the first connecting arm 16 includes an arc-shaped arm 161 , a first protrusion 162 , a second protrusion 163 , a third protrusion 164 and a fourth protrusion 165 . The shapes of the first bumps 162 , the second bumps 163 , the third bumps 164 and the fourth bumps 165 may be arc shapes or other shapes. In other embodiments, the second rotating end 16b of the first connecting arm 16 may also not include the first bump 162 , the second bump 163 , the third bump 164 and the fourth bump 165 .

The arc-shaped arm 161 includes a first arc surface 1611 , a second arc surface 1612 , a connecting surface 1613 , a first side surface 1614 and a second side surface 1615 . The connecting surface 1613 is connected between the first arc surface 1611 and the second arc surface 1612 . The first side surface 1614 is connected between the first arc surface 1611 and the second arc surface 1612 . The second side surface 1615 is connected between the first arc surface 1611 and the second arc surface 1612 . The connection surface 1613 is connected between the first side surface 1614 and the second side surface 1615 . The connection surface 1613 may include a first sub-surface 1613a and a second sub-surface 1613b arranged at intervals. The first sub-surface 1613a is connected to the first side surface 1614 . The second sub-surface 1613b is connected to the second side surface 1615 . The first arc surface 1611 and the second arc surface 1612 are disposed opposite to each other. The second side 1615 is disposed opposite to the first side 1614 .

In addition, the arc-shaped arm 161 may also be provided with a notch 1616 . At this time, the ends of the arc-shaped arms 161 form two claws. The notch 1616 forms an opening on the first arc surface 1611 and the connecting surface 1613 . The notch 1616 of the arcuate arm 161 is used to prevent the arcuate arm 161 from interfering with some mechanisms of the folding mechanism 101 . When the arc-shaped arm 161 is not provided with the notch 1616, the connecting surface 1613 is a continuous surface, that is, the first sub-surface 1613a and the second sub-surface 1613b are connected to each other.

In this embodiment, the first bumps 162 and the second bumps 163 are protruded on the first side surface 1614 at intervals. Compared with the first protrusion 162 , the second protrusion 163 is disposed close to the first rotating end 16 a of the first connecting arm 16 . The distance between the second protrusion 163 and the first rotating end 16a of the first connecting arm 16 is smaller than the distance between the first protrusion 162 and the first rotating end 16a of the first connecting arm 16 . The first bump 162 has a first inclined surface 1621 close to the second bump 163 . At this time, the first inclined surface 1621 faces the first rotating end 16 a of the first connecting arm 16 . The first inclined surface 1621 is connected to the first side surface 1614 of the arc-shaped arm 161 , and the angle between the first inclined surface 1621 and the first side surface 1614 of the arc-shaped arm 161 may be an obtuse angle.

Please refer to FIG. 23 in combination with FIG. 21 and FIG. 22 . FIG. 23 is a schematic structural diagram of the first connecting arm 16 and the second connecting arm 17 shown in FIG. 21 at another angle. The third bump 164 and the fourth bump 165 are protruded from the second side surface 1615 at intervals. Compared with the third protrusion 164 , the fourth protrusion 165 is disposed close to the first rotating end 16 a of the first connecting arm 16 . The distance between the fourth bump 165 and the first rotating end 16 a of the first connecting arm 16 is smaller than the distance between the third bump 164 and the first rotating end 16 a of the first connecting arm 16 . The third bump 164 has a second inclined surface 1641 close to the fourth bump 165 . At this time, the second inclined surface 1641 faces the first rotating end 16 a of the first connecting arm 16 . The second inclined surface 1641 is connected to the second side surface 1615 of the arc-shaped arm 161 , and the angle between the second inclined surface 1641 and the second side surface 1615 of the arc-shaped arm 161 may be an obtuse angle.

Exemplarily, the second connecting arm 17 and the first connecting arm 16 may have the same or similar structures, symmetrical or partially symmetrical structures, or different structures. In some embodiments, the second connecting arm 17 and the first connecting arm 16 may be centrally symmetric structures. It should be understood that the basic design of the component structure of the second connecting arm 17, the design of the connection relationship between the components, and the design of the connection relationship between the components and other structures other than the components can all refer to the relevant solutions of the first connecting arm 16, and at the same time The second connecting arm 17 is allowed to be slightly different from the first connecting arm 16 in the detail structure or positional arrangement of the components.

Please refer to FIGS. 21 and 22 again, the second connecting arm 17 includes a first rotating end 17a and a second rotating end 17b connected to the first rotating end 17a.

In this embodiment, the first rotating end 17 a of the second connecting arm 17 includes a side hole 178 , a first rotating hole 1791 and a second rotating hole 1792 . The side hole 178 divides the first rotating end 17 a of the second connecting arm 17 into a first rotating block 1781 and a second rotating block 1782 . The first rotating hole 1791 is provided on the first rotating block 1781 . The second rotating hole 1792 is provided on the second rotating block 1782 . Both the first rotation hole 1791 and the second rotation hole 1792 communicate with the side hole 178 , and the first rotation hole 1791 and the second rotation hole 1792 are disposed opposite to each other. In other embodiments, the first rotating end 17a of the second connecting arm 17 may also have other structures.

In this embodiment, the second rotating end 17 b of the second connecting arm 17 includes an arc-shaped arm 171 , a first protrusion 172 , a second protrusion 173 , a third protrusion 174 and a fourth protrusion 175 . The shapes of the first bumps 172 , the second bumps 173 , the third bumps 174 and the fourth bumps 175 may be arc shapes or other shapes. In other embodiments, the second rotating end 17b of the second connecting arm 17 may also not include the first bump 172 , the second bump 173 , the third bump 174 and the fourth bump 175 .

The arc-shaped arm 171 includes a first arc surface 1711 , a second arc surface 1712 , a connecting surface 1713 , a first side surface 1714 and a second side surface 1715 . The connection surface 1713 is connected between the first arc surface 1711 and the second arc surface 1712 . The first side surface 1714 is connected between the first arc surface 1711 and the second arc surface 1712 . The second side surface 1715 is connected between the first arc surface 1711 and the second arc surface 1712 . The connecting surface 1713 is connected between the first side surface 1714 and the second side surface 1715 . The connection surface 1713 may include a first sub-surface 1713a and a second sub-surface 1713b arranged at intervals. The first sub-surface 1713a is connected to the first side surface 1714 . The second sub-surface 1713b is connected to the second side surface 1715 . The first arc surface 1711 and the second arc surface 1712 are disposed opposite to each other. The first side surface 1714 is disposed opposite to the second side surface 1715 .

In addition, the arc-shaped arm 171 is further provided with a notch 1716 . At this time, two claw notches 1716 are formed at the end of the arc-shaped arm 171 to form openings on the first arc surface 1711 and the connecting surface 1713 . The notch 1716 of the arcuate arm 171 is used to prevent the arcuate arm 171 from interfering with some mechanisms of the folding mechanism 101 . When the arc-shaped arm 171 is not provided with the notch 1716, the connecting surface 1713 is a continuous surface, that is, the first sub-surface 1713a and the second sub-surface 1713b are connected to each other.

In this embodiment, the first bumps 172 and the second bumps 173 are protruded on the first side surface 1714 at intervals. Compared with the first protrusion 172 , the second protrusion 173 is disposed close to the first rotating end 17 a of the second connecting arm 17 . The distance between the second protrusion 173 and the first rotating end 17a of the second connecting arm 17 is smaller than the distance between the first protrusion 172 and the first rotating end 17a of the second connecting arm 17 . The first bump 172 has a first inclined surface 1721 close to the second bump 173 . At this time, the first inclined surface 1721 faces the first rotating end 17 a of the second connecting arm 17 . The first inclined surface 1721 is connected to the first side surface 1714 of the arc-shaped arm 171 , and the angle between the first inclined surface 1721 and the first side surface 1714 of the arc-shaped arm 171 may be an obtuse angle.

Please refer to FIG. 23 again, and as shown in FIG. 21 and FIG. 22 , the third bump 174 and the fourth bump 175 are protruded on the second side surface 1715 at intervals. Compared with the third protrusion 174 , the fourth protrusion 175 is disposed close to the first rotating end 17 a of the second connecting arm 17 . The distance between the fourth bump 175 and the first rotating end 17 a of the second connecting arm 17 is smaller than the distance between the third bump 174 and the first rotating end 17 a of the second connecting arm 17 . The third bump 174 has a second inclined surface 1741 close to the fourth bump 175 . At this time, the second inclined surface 1741 faces the first rotating end 17 a of the second connecting arm 17 . The second inclined surface 1741 is connected to the second side surface 1715 of the arc-shaped arm 171 , and the angle between the second inclined surface 1741 and the second side surface 1715 of the arc-shaped arm 171 may be an obtuse angle.

Please refer to FIG. 24 in combination with FIG. 17 and FIG. 21 . FIG. 24 is a partial structural schematic diagram of the folding device 1 shown in FIG. 2 . The first rotating end 16 a of the first connecting arm 16 is rotatably connected to the first fixing frame 12 . The first rotating block 1681 of the first connecting arm 16 is disposed in the first side hole 1251 of the first fixing frame 12 . The second rotating block 1682 of the first connecting arm 16 is disposed in the second side hole 1252 of the first fixing frame 12 .

In addition, the first rotating hole 1253 of the first fixing frame 12, the first rotating hole 1691 of the first connecting arm 16, the second rotating hole 1254 of the first fixing frame 12, the second rotating hole 1692 of the first connecting arm 16 and The rotation grooves 1255 of the first fixing frame 12 are arranged opposite to each other in sequence. By passing the rotating shaft 108 through the first rotating hole 1253 of the first fixing frame 12 , the first rotating hole 1691 of the first connecting arm 16 , the second rotating hole 1254 of the first fixing frame 12 , and the second rotating hole 1254 of the first connecting arm 16 The rotation hole 1692 and the rotation slot 1255 of the first fixing frame 12 enable the first rotating end 16 a of the first connecting arm 16 to be rotatably connected to the first fixing frame 12 through the rotating shaft 108 . Exemplarily, both ends of the rotating shaft 108 may be respectively fixed in the first rotating hole 1253 of the first fixing frame 12 and in the rotating groove 1255 of the first fixing frame 12 .

In other embodiments, when the folding mechanism 101 has other structures, the first rotating end 16 a of the first connecting arm 16 can also be fixedly connected to the first fixing frame 12 .

Please refer to FIG. 24 again, and as shown in FIG. 17 and FIG. 21 , the first rotating end 17 a of the second connecting arm 17 is rotatably connected to the second fixing frame 13 . The first rotating block 1781 of the second connecting arm 17 is disposed in the first side hole 1351 of the second fixing frame 13 . The second rotating block 1782 of the second connecting arm 17 is disposed in the second side hole 1352 of the second fixing frame 13 .

In addition, the first rotating hole 1353 of the second fixing frame 13, the first rotating hole 1791 of the second connecting arm 17, the second rotating hole 1354 of the second fixing frame 13, the second rotating hole 1792 of the second connecting arm 17 and The rotation grooves 1355 of the second fixing frame 13 are arranged opposite to each other in sequence. By passing the rotating shaft through the first rotating hole 1353 of the second fixing frame 13 , the first rotating hole 1791 of the second connecting arm 17 , the second rotating hole 1354 of the second fixing frame 13 , and the second rotating hole of the second connecting arm 17 The hole 1792 and the rotation slot 1355 of the second fixing frame 13 make the first rotating end 17a of the second connecting arm 17 rotatably connected to the second fixing frame 13 through the rotating shaft. Exemplarily, both ends of the rotating shaft can be respectively fixed in the first rotating hole 1353 of the second fixing frame 13 and in the rotating groove 1355 of the second fixing frame 13 .

In other embodiments, when the folding mechanism 101 has other structures, the first rotating end 17 a of the second connecting arm 17 can also be fixedly connected to the second fixing frame 13 .

Please refer to FIG. 25 . FIG. 25 is a partial structural diagram of the folding device 1 shown in FIG. 2 . The second rotating end 16b of the first connecting arm 16 is rotatably connected to the first housing 112 . The second rotating end 17b of the second connecting arm 17 is rotatably connected to the first housing 112 . At this time, the first casing 112 is located between the first casing 102 and the second casing 103 .

Exemplarily, when the electronic device 100 is in a flattened state, a part of the first casing 112 is located in the first fixing groove 1025 of the first casing 102 , and another part of the first casing 112 is located in the second fixing groove 1035 of the second casing 103 . . In this way, the first casing 102 and the second casing 103 can shield the first casing 112 .

Please refer to FIG. 26 in combination with FIG. 25 . FIG. 26 is a partial structural schematic diagram of the folding device 1 shown in FIG. 2 . When the base 111 is fixedly connected to the first casing 112 , the main shaft 11 is located between the first casing 102 and the second casing 103 . In addition, the first support surface 104 of the base 111 faces away from the second rotating end 16 b of the first connecting arm 16 and the second rotating end 17 b of the second connecting arm 17 . The base 111 can cover the second rotating end 16 b of the first connecting arm 16 and the second rotating end 17 b of the second connecting arm 17 .

In addition, the base 111 is provided with a plurality of escape holes 1119 . The number of escape holes 1119 is not limited to the four shown in FIG. 26 . When the electronic device 100 is in the flattened state, the two claws of the second rotating end 16b of the first connecting arm 16 can respectively extend into the two avoidance holes 1119 . The two claws of the second rotating end 17b of the second connecting arm 17 can respectively extend into the two avoidance holes 1119 . Therefore, by arranging the avoidance hole 1119 on the base 111, the second rotating end 16b of the first connecting arm 16 is provided with a notch 1616 and the second rotating end 17b of the second connecting arm 17 is provided with a notch 1716, so that when the electronic device 100 is unfolded, In the flat state, interference between the base 111 and the second rotating end 16b of the first connecting arm 16 and the second rotating end 17b of the second connecting arm 17 can be avoided.

Please refer to FIG. 27 in conjunction with FIG. 26 . FIG. 27 is a sectional view of the partial folding device 1 shown in FIG. 26 at A9-A9. The arc-shaped arm 161 of the first connecting arm 16 can be disposed in the first arc-shaped groove 1164 of the main shaft 11 , so that the second rotating end 16 b of the first connecting arm 16 is rotatably connected to the main shaft 11 .

When the electronic device 100 is in the flattened state, correspondingly, the folding mechanism 101 is in the flattened state, and the arc-shaped arm 161 of the first connecting arm 16 can be turned into the first arc-shaped groove 1164 . In addition, the main shaft 11 is located between the first fixing frame 12 and the second fixing frame 13 . The main shaft 11 is spaced apart from the first fixing frame 12 . The main shaft 11 is spaced apart from the second fixing frame 13 . In addition, the first fixing frame 12 and the second fixing frame 13 may form 180°. In other embodiments, the first housing 102 and the second housing 103 may also have a slight deviation relative to 180°, such as 165°, 177°, or 185°.

Please refer to FIG. 28. FIG. 28 is a cross-sectional view of the partial folding device 1 shown in FIG. 27 when it is in a closed state. When the electronic device 100 is in the closed state, correspondingly, the folding mechanism 101 is in the closed state, and the arc-shaped arm 161 of the first connecting arm 16 can be partially or fully rotated out of the first arc-shaped slot 1164 . In addition, the first fixing frame 12 and the second fixing frame 13 can be close to each other, and the first fixing frame 12 and the second fixing frame 13 are disposed opposite to each other.

In this embodiment, the cooperation between the arc-shaped arm 161 of the first connecting arm 16 and the first arc-shaped groove 1164 of the main shaft 11 forms a virtual shaft rotational connection structure. The rotation connection between the second rotating end 16b of the first connecting arm 16 and the main shaft 11 is realized through a virtual axis, which can reduce the design difficulty of the folding mechanism 101, and has lower requirements on the size of the folding mechanism 101, which is beneficial to the folding mechanism 101 and the folding device. 1 thinning. In some other embodiments, the second rotating end 16b of the first connecting arm 16 and the main shaft 11 may also be rotationally connected through a solid shaft, which is not strictly limited in this embodiment of the present application.

Please refer to FIG. 27 again. The arc-shaped arm 171 of the second connecting arm 17 can be disposed in the second arc-shaped groove 1165 of the main shaft 11 , so that the second rotating end 17 b of the second connecting arm 17 can be connected to the main shaft 11 rotatably. When the electronic device 100 is in the flattened state, correspondingly, the folding mechanism 101 is in the flattened state, and the arc-shaped arm 171 of the second connecting arm 17 can be turned into the second arc-shaped groove 1165 . The second connecting arm 17 and the first connecting arm 16 may form 180°. In other embodiments, the first housing 102 and the second housing 103 may also have a slight deviation relative to 180°, such as 165°, 177°, or 185°.

Referring to FIG. 28 again, when the electronic device 100 is in a closed state, correspondingly, the folding mechanism 101 is in a closed state, and the arc-shaped arm 171 of the second connecting arm 17 can partially or fully rotate out of the first arc-shaped slot 1165 . The second connecting arm 17 and the first connecting arm 16 can be close to each other, and the second connecting arm 17 and the first connecting arm 16 are disposed opposite to each other.

In this embodiment, the cooperation between the arc-shaped arm 171 of the second connecting arm 17 and the second arc-shaped groove 1165 of the main shaft 11 forms a virtual shaft rotational connection structure. The second rotating end 17b of the second connecting arm 17 and the main shaft 11 are rotatably connected through a virtual axis, which can reduce the design difficulty of the folding mechanism 101, and has lower requirements on the size of the folding mechanism 101, which is beneficial to the folding mechanism 101 and the folding device. 1 thinning. In some other embodiments, the second rotating end 17b of the second connecting arm 17 and the main shaft 11 may also be rotationally connected through a solid shaft, which is not strictly limited in the embodiments of the present application.

Please refer to FIGS. 26 to 28 together. Since the first rotating end 16a of the first connecting arm 16 is rotatably connected to the first fixing frame 12, the second rotating end 16b of the first connecting arm 16 is rotatably connected to the main shaft 11, and the first fixed The frame 12 can rotate relative to the main shaft 11 through the first connecting arm 16 . In addition, since the first rotating end 17a of the second connecting arm 17 is rotatably connected to the second fixing frame 13, and the second rotating end 17b of the second connecting arm 17 is rotatably connected to the main shaft 11, the second fixing frame 13 can pass through the second connecting arm 17 rotates relative to the main shaft 11 .

As can be seen from the above, the first fixing frame 12 is fixedly connected to the first casing 102 , and the second fixing frame 13 is fixedly connected to the second casing 103 . At this time, when the first fixing frame 12 rotates relative to the main shaft 11 through the first connecting arm 16 and the second fixing frame 13 rotates relative to the main shaft 11 through the second connecting arm 17 , the first housing 102 can rotate relative to the second housing 103 , that is, the first casing 102 and the second casing 103 can be relatively unfolded or relatively folded.

Please refer to FIG. 29 . FIG. 29 is an exploded schematic view of the first stopper 18 shown in FIG. 6 . The first stop member 18 includes a first bracket 181 , a first elastic member 182 , a first ball 183 and a second ball 184 . The first bracket 181 , the first balls 183 and the second balls 184 can be rigid structures and are not easily deformed under the action of external force. The first elastic member 182 is an elastic structure, which is easily deformed under the action of external force. The first bracket 181 and the first elastic member 182 may constitute the first elastic component 180 . The first elastic component 180 can be deformed. The deformation of the first elastic component 180 may be the deformation of the first elastic member 182 .

In this embodiment, the first elastic member 182 may be a spring.

In other embodiments, the first elastic member 182 may also be an elastic sheet, or a flexible member with elastic force (eg, an elastic rubber block) or the like.

In other embodiments, the first stopper 18 may also not include the first bracket 181 . For example, an elastic rubber block is used as an alternative embodiment of the first bracket 181 and the spring as a whole.

In this embodiment, the number of the first elastic members 182 is four. In other embodiments, the number of the first elastic members 182 may also be one, two or three. The specific embodiment is not limited.

Please refer to FIG. 29 again, the first bracket 181 includes a first resisting portion 1811 and a first guiding portion 1812 . The first guide portion 1812 is connected to the first resisting portion 1811 .

Exemplarily, the first resisting portion 1811 is elongated. The first abutting portion 1811 includes a first end portion 1811a and a second end portion 1812b.

Exemplarily, the number of the first guide parts 1812 is the same as the number of the first elastic members 182 , that is, the number of the first guide parts 1812 in this embodiment is four. The four first guide portions 1812 are arranged at intervals along the length direction of the first abutting portion 1811 . One first guide portion 1812 is disposed opposite to the first end portion 1811 a of the first abutting portion 1811 , and one first guide portion 1812 is disposed opposite to the second end portion 1812 b of the first abutting portion 1811 . The first bracket 181 is generally in the shape of a "comb". In other embodiments, the number of the first guide portions 1812 disposed opposite to the first end portion 1811a of the first abutting portion 1811 may also be greater than one. The number of the first guide portions 1812 disposed opposite to the second end portion 1812b of the first abutting portion 1811 may also be greater than one.

In addition, the first resisting portion 1811 is provided with a first limiting groove 1813 and a second limiting groove 1814 arranged at intervals. The openings of the first limiting groove 1813 and the second limiting groove 1814 are both formed on the surface of the first resisting portion 1811 away from the first guiding portion 1812 . Exemplarily, the first limiting groove 1813 is located at the first end portion 1811 a of the first resisting portion 1811 , and the second limiting groove 1814 is located at the second end portion 1812 b of the first resisting portion 1811 .

Please refer to FIG. 30 , in conjunction with FIG. 29 , FIG. 30 is a schematic structural diagram of the first stopper 18 and the second stopper 19 shown in FIG. 6 . The first elastic member 182 is sleeved on the first guide portion 1812 of the first bracket 181 and is pressed against the first abutting portion 1811 . Exemplarily, one end of the first elastic member 182 may also be fixedly connected to the first abutting portion 1811 by welding or bonding.

In this embodiment, the four first elastic members 182 can be sleeved with the four first guide portions 1812 in a one-to-one correspondence. In addition, in the length direction of the first guide portion 1812 , the length of the first elastic member 182 in a natural state (ie, a state without deformation) is greater than the length of the first guide portion 1812 . In this way, when the first elastic member 182 is sleeved with the first guide portion 1812 , the first elastic member 182 can protrude relative to the first guide portion 1812 .

Exemplarily, when the electronic device 100 is in a flattened state, a closed state or an intermediate state, a part of the first balls 183 may be disposed in the first limiting groove 1813 . At this time, the first ball 183 may come into contact with the first end portion 1811 a of the first abutting portion 1811 . The first ball 183 can roll relative to the groove wall of the first limiting groove 1813 . The first limiting groove 1813 can prevent the first ball 183 from rolling out of the first limiting groove 1813 . The rolling direction of the first balls 183 may be any direction.

Exemplarily, when the electronic device 100 is in a flat state, a closed state or an intermediate state, some of the second balls 184 may be disposed in the second limiting grooves 1814 . At this time, the second ball 184 may be in contact with the second end portion 1812b of the first abutting portion 1811 . The second ball 184 can roll relative to the groove wall of the second limiting groove 1814 . The second limiting groove 1814 can prevent the second ball 184 from rolling out of the second limiting groove 1814 . The rolling direction of the second balls 184 may be any direction.

In this embodiment, the second stopper 19 and the first stopper 18 may have the same or similar structures, symmetrical or partially symmetrical structures, or different structures. In some embodiments, the second stopper 19 and the first stopper 18 are centrally symmetric structures, the basic design of the component structure of the second stopper 19 , the connection relationship design between the components, and the components and components For the connection relationship design of other structures, please refer to the relevant solutions of the first stop member 18, while allowing the second stop member 19 and the first stop member 18 to be slightly different in the detailed structure or positional arrangement of the components. Exemplarily, the second stop member 19 may include a second bracket 191 , a second elastic member 192 , a third ball 193 and a fourth ball 194 . The second bracket 191 and the second elastic member 192 may form a second elastic component 190 .

Please refer to FIG. 31 and FIG. 32 , in conjunction with FIG. 11 , FIG. 31 is a partial structural diagram of the folding device 1 shown in FIG. 2 . FIG. 32 is an enlarged schematic view of the partial folding device 1 shown in FIG. 31 at B1. The first stopper 18 is disposed in the first accommodating space 1161 of the main shaft 11 . The first accommodating space 1161 may be jointly defined by the first casing 112 and the base 111 . In order to be able to illustrate the first stop member 18 in FIG. 31 , the base 111 is not illustrated in FIG. 31 .

The first resisting portion 1811 is disposed between the first ball 183 and the first elastic member 182 . The first abutting portion 1811 is also disposed between the second ball 184 and the first elastic member 182 . The first guide portion 1812 of the first bracket 181 is located on the side of the first abutting portion 1811 of the first bracket 181 away from the first connecting arm 16 and the second connecting arm 17 . The other end of the first elastic member 182 abuts against the wall surface of the first housing 112 . It can be understood that when a force in the negative direction of the Y-axis is applied to the first abutting portion 1811 of the first bracket 181, the first bracket 181 can slide relative to the first housing 112 in the negative direction of the Y-axis. The first resisting portion 1811 presses the first elastic member 182 . The first elastic member 182 can be deformed along the negative direction of the Y-axis.

Please refer to FIG. 32 , in conjunction with FIG. 12 , a part of the first ball 183 is disposed in the first rolling groove 1162 . The first balls 183 can roll relative to the groove walls of the first rolling grooves 1162 . When the first balls 183 are disposed in the first rolling grooves 1162 , in the Z-axis direction, the first balls 183 abut against the base 111 and the first housing 112 . In the X-axis direction, the first balls 183 abut against the first housing 112 . In this way, the base 111 and the first housing 112 can restrict the movement of the first balls 183 along the X-axis direction and the Z-axis direction.

In addition, a part of the second ball 184 is provided in the second rolling groove 1163 . The second ball 184 can roll relative to the groove wall of the second rolling groove 1163 . When the second balls 184 are disposed in the second rolling grooves 1163 , in the Z-axis direction, the second balls 184 abut against the base 111 and the first housing 112 . In the X-axis direction, the second ball 184 abuts against the first housing 112 . In this way, the base 111 and the first housing 112 can restrict the movement of the second balls 184 in the X-axis direction and the Z-axis direction.

Referring again to FIG. 32 , in conjunction with FIG. 21 and FIG. 12 , when the electronic device 100 is in a flattened state, at least a portion of the first ball 183 is located between the first bump 162 and the second bump 163 . The first ball 183 is located on the side of the first protrusion 162 of the first connecting arm 16 close to the first rotating end 16 a of the first connecting arm 16 . The distance between the first ball 183 and the first rotating end 16 a of the first connecting arm 16 is smaller than the distance between the first projection 162 and the first rotating end 16 a of the first connecting arm 16 . In addition, the first ball 183 abuts against the first inclined surface 1621 of the first protrusion 162 of the first connecting arm 16 (please refer to FIG. 22 ). Exemplarily, the first ball 183 may also abut against the arc-shaped arm 161 of the first connecting arm 16 . The first ball 183 can also abut against the second bump 163 of the first connecting arm 16 .

In addition, when the electronic device 100 is in a flat state, the first elastic member 182 is deformed, and the first elastic member 182 is in a compressed state, and the compression amount of the first elastic member 182 is the first compression amount. At this time, the first elastic member 182 exerts a force along the positive direction of the Y-axis on the first abutting portion 1811 of the first bracket 181 . At this time, in the Y-axis direction, the first bracket 181 and the first connecting arm 16 can limit the position of the first ball 183 .

It can be understood that, when the electronic device 100 is in a flattened state, on the one hand, the first elastic member 182 is in a compressed state, and the first elastic member 182 can apply a positive force along the Y-axis to the first abutting portion 1811 of the first bracket 181 . On the other hand, the first ball 183 abuts against the first inclined surface 1621 of the first protrusion 162 of the first connecting arm 16 (please refer to FIG. 22 ). At this time, the first elastic member 182 can press the first ball 183 to the second rotating end 16b of the first connecting arm 16 . The first elastic member 182 can exert a force on the second rotating end 16b of the first connecting arm 16 through the first ball 183 . The frictional force between the first ball 183 and the second rotating end 16b of the first connecting arm 16 can be greatly increased. In this way, when the electronic device 100 is in a flattened state, the second rotating end 16b of the first connecting arm 16 is not easy to rotate relative to the main shaft 11 . Therefore, this frictional force may hinder the folding of the electronic device 100 to a certain extent. When the electronic device 100 is in a flat state, the stability of the electronic device 100 is better. It should be noted that, when the user needs to fold the electronic device 100, the user exerts a force on the electronic device 100, and when the force exerted by the user does not overcome the frictional force, the electronic device 100 cannot be folded .

In addition, when the first elastic member 182 exerts a force on the second rotating end 16b of the first connecting arm 16 through the first ball 183, the first connecting arm 16 may receive a supporting force (also referred to as the extension force) along the positive direction of the Z-axis. flat support). This supporting force can hinder the rotation of the second rotating end 16b of the first connecting arm 16 relative to the main shaft 11 to a certain extent, that is, this supporting force can hinder the folding of the electronic device 100 to a certain extent. Therefore, the supporting force can ensure that the electronic device 100 has better stability when it is in a flattened state.

In addition, when the first ball 183 abuts against the second bump 163 of the first connecting arm 16 , the second bump 163 of the first connecting arm 16 can also limit the first ball 183 to avoid the first ball 183 scrolls along the X-axis.

Please refer to Fig. 33a and Fig. 33b, and in conjunction with Fig. 32, Fig. 33a is a schematic structural diagram of the partial folding device 1 shown in Fig. 31 in a closed state. Fig. 33b is an enlarged schematic view at M of the partial folding device 1 shown in Fig. 33a. When the electronic device 100 is in the closed state, the first ball 183 is located on the side of the first bump 162 of the first connecting arm 16 away from the second bump 163 of the first connecting arm 16 , that is, the first ball 183 and the first The distance between the first rotating ends 16a of the connecting arms 16 is greater than the distance between the first protrusions 162 of the first connecting arms 16 and the first rotating ends 16a of the first connecting arms 16 . The first ball 183 and the first connecting arm 16 are disposed separately, there is a gap between the first ball 183 and the first connecting arm 16 , and there is no contact between the first ball 183 and the first connecting arm 16 . At this time, when the electronic device 100 is partially flattened or folded, the first ball 183 does not come into contact with the first connecting arm 16 .

In addition, when the electronic device 100 is in a closed state, the first elastic member 182 is deformed, and the first elastic member 182 is still in a compressed state, and the compression amount of the first elastic member 182 is the second compression amount. The second amount of compression is smaller than the first amount of compression. At this time, the first elastic member 182 still exerts a force along the positive direction of the Y-axis on the first abutting portion 1811 of the first bracket 181 . The first ball 183 abuts against the groove wall of the first rolling groove 1162 (refer to the position indicated by 1162 in FIG. 10 ). At this time, in the Y-axis direction, the first bracket 181 and the groove wall of the first rolling groove 1162 can limit the position of the first ball 183 .

In other embodiments, when the second rotating end 16b of the first connecting arm 16 adopts other structures, the first ball 183 can also abut against the second rotating end of the first connecting arm 16 when the electronic device 100 is in the closed state 16b. At this time, when the electronic device 100 is being flattened or folded, the first balls 183 are all in contact with the first connecting arm 16 .

Referring to FIGS. 31 to 33 b , when the electronic device 100 is converted from the flattened state to the closed state, the first casing 102 is folded relative to the second casing 103 . The first rotating end 16a of the first connecting arm 16 rotates relative to the first fixing frame 12 . The second rotating end 16b of the first connecting arm 16 rotates relative to the main shaft 11 . The first ball 183 rolls relative to the second rotating end 16 b of the first connecting arm 16 . The first ball 183 is shifted from a position between the first bump 162 of the first connecting arm 16 and the second bump 163 of the first connecting arm 16 to a position where the first bump 162 of the first connecting arm 16 is away from the first bump 162 of the first connecting arm 16 . The position of one side of the second bump 163 of the connecting arm 16 . It should be understood that during the partial folding process of the electronic device 100 , the first ball 183 rolls over the first bump 162 of the first connecting arm 16 . The first bump 162 of the first connecting arm 16 can make the first ball 183 roll along the negative direction of the Y-axis. The first ball 183 may press the first bracket 181 . The first bracket 181 can slide relative to the first housing 112 along the negative direction of the Y-axis. The first abutting portion 1811 of the first bracket 181 presses the first elastic member 182 . The first elastic member 182 can be deformed along the negative direction of the Y-axis. At this time, the first elastic member 182 can press the first ball 183 to the second rotating end 16b of the first connecting arm 16 . The first elastic member 182 can exert a force on the second rotating end 16 b of the first connecting arm 16 through the first ball 183 , so as to further increase the frictional force between the first ball 183 and the first connecting arm 16 . The folding speed of the first casing 102 is slower than that of the second casing 103 . In this way, on the one hand, the flexible screen 2 fixed on the first casing 102 and the second casing 103 is not easily damaged due to collision due to improper user operations; Feel the damping force. The damping force can enable the user to experience a better feel, thereby improving user experience.

In addition, when the electronic device 100 starts to be folded from the flattened state to the closed state, the first ball 183 is located between the first protrusion 162 of the first connecting arm 16 and the second protrusion 163 of the first connecting arm 16 from the position , and switch to the position on the side of the first protrusion 162 of the first connecting arm 16 away from the second protrusion 163 of the first connecting arm 16 . When the folding angle of the electronic device 100 is small, the first ball 183 can roll back to the first bump 162 of the first connecting arm 16 and the first connecting arm under the action of the first bump 162 of the first connecting arm 16 16 between the second bumps 163. Therefore, through the cooperation between the first ball 183 and the first bump 162, when the folding angle of the electronic device 100 is small, the electronic device 100 can be automatically unfolded to a flat state.

In addition, when the electronic device 100 transitions from the closed state to the flattened state, the first ball 183 is located at the side of the first bump 162 of the first connecting arm 16 away from the second bump 163 of the first connecting arm 16 , and switch to the position between the first bump 162 of the first connecting arm 16 and the second bump 163 of the first connecting arm 16 . When the flattening angle of the electronic device 100 is relatively large (close to the flattened state), the first ball 183 rolls from the height of the first bump 162 of the first connecting arm 16 to the first bump 162 of the first connecting arm 16 At the lower part of the first ball 183, the rolling speed of the first ball 183 is relatively fast, so that the user can experience the feeling of being flattened in place.

In addition, compared with the solution in which the first elastic member 182 directly acts on the second rotating end 16b of the first connecting arm 16 , in this embodiment, the connection between the second rotating end 16b of the first connecting arm 16 and the first elastic member 182 is achieved. The first ball 183 is arranged between the two, and the first ball 183 can convert the sliding relationship between the first elastic member 182 and the second rotating end 16b of the first connecting arm 16 into a rolling mode, thereby reducing the relationship between the first elastic member 182 and the first Frictional losses between the second rotating ends 16b of the connecting arms 16 .

In addition, when the electronic device 100 is in the closed state, the first ball 183 is provided separately from the first connecting arm 16 , and the first connecting arm 16 is no longer subjected to the damping force of the first elastic member 182 .

Please refer to FIG. 32 again and in conjunction with FIG. 21 , when the electronic device 100 is in the flattened state, at least a part of the second ball 184 is located between the first bump 172 of the second connecting arm 17 and the first bump 172 of the second connecting arm 17 between the two bumps 173 . The second ball 184 is located on the side of the first projection 172 of the second connecting arm 17 close to the first rotating end 17 a of the second connecting arm 17 . The distance between the second ball 184 and the first rotating end 17a of the second connecting arm 17 is smaller than the distance between the first projection 172 of the second connecting arm 17 and the first rotating end 17a of the second connecting arm 17 . In addition, the second ball 184 abuts against the first inclined surface 1721 of the first protrusion 172 of the second connecting arm 17 (please refer to FIG. 22 ). Exemplarily, the second ball 184 can also abut against the arc-shaped arm 171 of the second connecting arm 17 . The second ball 184 can also abut against the second bump 173 of the second connecting arm 17 .

In addition, when the electronic device 100 is in a flattened state, the first elastic member 182 is deformed, and the first elastic member 182 is in a compressed state. At this time, the first elastic member 182 exerts a force along the positive direction of the Y-axis on the first abutting portion 1811 of the first bracket 181 . At this time, in the Y-axis direction, the first bracket 181 and the second connecting arm 17 can limit the position of the second ball 184 .

It can be understood that, when the electronic device 100 is in a flattened state, on the one hand, the first elastic member 182 is in a compressed state, and the first elastic member 182 can apply a positive force along the Y-axis to the first abutting portion 1811 of the first bracket 181 . On the other hand, the second ball 184 abuts against the first inclined surface 1721 of the first protrusion 172 of the second connecting arm 17 (please refer to FIG. 22 ). At this time, the first elastic member 182 can press the second ball 184 toward the second rotating end 17b of the second connecting arm 17 . The first elastic member 182 can exert a force on the second rotating end 17b of the second connecting arm 17 through the second ball 184 . The frictional force between the second ball 184 and the second rotating end 17b of the second connecting arm 17 can be greatly increased. In this way, when the electronic device 100 is in the flattened state, the second rotating end 17b of the second connecting arm 17 is not easy to rotate relative to the main shaft 11 . Therefore, this frictional force may hinder the folding of the electronic device 100 to a certain extent. When the electronic device 100 is in a flat state, the stability of the electronic device 100 is better.

In addition, when the first elastic member 182 exerts a force on the second rotating end 17b of the second connecting arm 17 through the second ball 184, the second connecting arm 17 can receive a supporting force (also referred to as the extension force) along the positive direction of the Z-axis. flat support). The supporting force can prevent the second rotating end 17b of the second connecting arm 17 from rotating relative to the main shaft 11 to a certain extent, that is, the supporting force can hinder the folding of the electronic device 100 to a certain extent. Therefore, the supporting force can ensure that the electronic device 100 has better stability when it is in a flattened state.

In addition, when the second ball 184 abuts against the second bump 173 of the second connecting arm 17 , the second bump 173 of the second connecting arm 17 can also limit the second ball 184 to avoid the second ball 184 scrolls along the X axis.

When the electronic device 100 is in the closed state, the positional relationship of the second ball 184 relative to the second rotating end 17b of the second connecting arm 17 may refer to the positional relationship of the first ball 183 relative to the second rotating end 16b of the first connecting arm 16 . I won't go into details here.

It can be understood that when the electronic device 100 is converted from the flattened state to the closed state, the first casing 102 is folded relative to the second casing 103 . The first rotating end 17 a of the second connecting arm 17 rotates relative to the second fixing frame 13 . The second rotating end 17b of the second connecting arm 17 rotates relative to the main shaft 11 . During the partial folding process of the electronic device 100 , the second ball 184 rolls relative to the second rotating end 17 b of the second connecting arm 17 and rolls relative to the first bump 172 . The second ball 184 rolls over the first projection 172 of the second connecting arm 17 . The first elastic member 182 can be deformed along the negative direction of the Y-axis. At this time, the first elastic member 182 can press the second ball 184 toward the second rotating end 17b of the second connecting arm 17 . The first elastic member 182 can exert a force on the second rotating end 17 b of the second connecting arm 17 through the second ball 184 to further increase the frictional force between the second ball 184 and the second connecting arm 17 . The folding speed of the first casing 102 is slower than that of the second casing 103 . In this way, on the one hand, the flexible screen 2 fixed on the first casing 102 and the second casing 103 is not easily damaged due to collision due to improper user operations; Feel the damping force. The damping force can enable the user to experience a better feel, thereby improving user experience.

In addition, compared with the solution in which the first elastic member 182 directly acts on the second rotating end 17b of the second connecting arm 17 , in this embodiment, the second rotating end 17b of the second connecting arm 17 and the first elastic member 182 are connected A second ball 184 is arranged between the two balls, and the second ball 184 can convert the sliding relationship between the first elastic member 182 and the second rotating end 17b of the second connecting arm 17 into a rolling mode, thereby lowering the distance between the first elastic member 182 and the second rotating end 17b. Frictional losses between the second rotating ends 17b of the connecting arms 17 .

In addition, through the cooperation between the second ball 184 and the first bump 172 of the second connecting arm 17, on the one hand, when the folding angle of the electronic device 100 is small, the electronic device 100 can be automatically unfolded to a flat state; on the other hand, It also allows the user to experience a flattened-in-place feel. Specifically, it will not be repeated here.

Please refer to FIG. 34 and FIG. 35 in conjunction with FIG. 15 . FIG. 34 is a partial structural diagram of the folding device 1 shown in FIG. 2 . FIG. 35 is an enlarged schematic view of the partial folding device 1 shown in FIG. 34 at B2. The second stopper 19 is disposed in the second receiving space 1168 of the main shaft 11 . It should be noted that the second accommodating space 1168 is jointly surrounded by the first casing 112 and the base 111 . In order to be able to illustrate the second stop member 19 in FIG. 34 , the base 111 is not illustrated in FIG. 34 .

The second guide portion 1912 of the second bracket 191 is located on the side of the second abutting portion 1911 of the second bracket 191 away from the first connecting arm 16 and the second connecting arm 17 . The second abutting portion 1911 is disposed between the third ball 193 and the second elastic member 192 . The second abutting portion 1911 is also disposed between the fourth ball 194 and the second elastic member 192 . The other end of the second elastic member 192 abuts against the wall surface of the first housing 112 . It can be understood that when a force is applied to the second abutting portion 1911 of the second bracket 191 along the positive direction of the Y-axis, the second bracket 191 can slide relative to the first housing 112 along the positive direction of the Y-axis, and the second bracket 191 can slide in the positive direction of the Y-axis. The second abutting portion 1911 of the 191 presses the second elastic member 192 . The second elastic member 192 can be deformed along the positive direction of the Y-axis.

Exemplarily, when the electronic device 100 is in a flattened state, the second elastic member 192 is in a compressed state. At this time, the second elastic member 192 can exert a force along the negative direction of the Y-axis on the second abutting portion 1911 of the second bracket 191 .

Please refer to FIG. 35 again, in conjunction with FIG. 14 , a part of the third ball 193 is disposed in the third rolling groove 1166 . The third ball 193 can roll relative to the groove wall of the third rolling groove 1166 . When the third ball 193 is disposed in the third rolling groove 1166 in the Z-axis direction, the third ball 193 abuts against the base 111 and the first housing 112 . In the X-axis direction, the third ball 193 abuts against the first housing 112 . In this way, the base 111 and the first housing 112 can restrict the movement of the third balls 193 along the X-axis direction and the Z-axis direction.

In addition, a part of the fourth ball 194 is provided in the fourth rolling groove 1167 . The fourth ball 194 can roll relative to the groove wall of the fourth rolling groove 1167 . When the fourth ball 194 is disposed in the fourth rolling groove 1167 , in the Z-axis direction, the fourth ball 194 abuts against the base 111 and the first housing 112 . In the X-axis direction, the fourth ball 194 abuts against the first housing 112 . In this way, the base 111 and the first housing 112 can restrict the movement of the fourth ball 194 in the X-axis direction and the Z-axis direction.

Please refer to FIG. 35 again, and as shown in FIG. 23 and FIG. 14 , when the electronic device 100 is in the flattened state, at least a part of the third ball 193 is located between the third protrusion 164 of the first connecting arm 16 and the first connecting arm 16 between the fourth bumps 165. The third ball 193 is located on the side of the third protrusion 164 of the first connecting arm 16 close to the first rotating end 16 a of the first connecting arm 16 . The distance between the third ball 193 and the first rotating end 16a of the first connecting arm 16 is smaller than the distance between the third bump 164 of the first connecting arm 16 and the first rotating end 16a of the first connecting arm 16 . In addition, the third ball 193 abuts against the second inclined surface 1641 of the third protrusion 164 of the first connecting arm 16 . Exemplarily, the third ball 193 may also abut against the arc-shaped arm 161 of the first connecting arm 16 . The third ball 193 can also abut against the fourth bump 165 of the first connecting arm 16 .

In addition, when the electronic device 100 is in a flattened state, the second elastic member 192 is deformed, and the second elastic member 192 is in a compressed state, and the compression amount of the second elastic member 192 is the third compression amount. At this time, the second elastic member 192 exerts a force along the negative direction of the Y-axis on the second abutting portion 1911 of the second bracket 191 . At this time, in the Y-axis direction, the second bracket 191 and the first connecting arm 16 can limit the position of the third ball 193 .

It can be understood that when the electronic device 100 is in a flattened state, on the one hand, the second elastic member 192 is in a compressed state, and the second elastic member 192 can exert a negative force along the Y-axis on the second abutting portion 1911 of the second bracket 191 . On the other hand, the third ball 193 abuts against the second inclined surface 1641 of the third protrusion 164 of the first connecting arm 16 (please refer to FIG. 23 ). At this time, the second elastic member 192 can press the third ball 193 to the second rotating end 16b of the first connecting arm 16 . The second elastic member 192 can exert a force on the second rotating end 16b of the first connecting arm 16 through the third ball 193 . The frictional force between the third ball 193 and the second rotating end 16b of the first connecting arm 16 can be greatly increased. In this way, when the electronic device 100 is in the flattened state, the second rotating end 16b of the first connecting arm 16 is not easy to rotate relative to the main shaft 11. Therefore, this frictional force may hinder the folding of the electronic device 100 to a certain extent. When the electronic device 100 is in a flat state, the stability of the electronic device 100 is better.

In addition, when the second elastic member 192 exerts a force on the second rotating end 16b of the first connecting arm 16 through the third ball 193, the first connecting arm 16 can receive a supporting force (also referred to as the extension force) along the positive direction of the Z-axis. flat support). This supporting force can hinder the rotation of the second rotating end 16b of the first connecting arm 16 relative to the main shaft 11 to a certain extent, that is, this supporting force can hinder the folding of the electronic device 100 to a certain extent. Therefore, the supporting force can ensure that the electronic device 100 has better stability when it is in a flattened state.

In addition, when the third ball 193 abuts against the fourth bump 165 of the first connecting arm 16 , the fourth bump 165 of the first connecting arm 16 can also limit the third ball 193 to avoid the third ball 193 scrolls along the X-axis.

Please refer to FIG. 36 in conjunction with FIG. 35 . FIG. 36 is a schematic structural diagram of the partial folding device 1 shown in FIG. 34 in a closed state. When the electronic device 100 is in the closed state, the third ball 193 is located on the side of the third bump 164 of the first connecting arm 16 away from the fourth bump 165 of the first connecting arm 16 , that is, the third ball 193 is connected to the first connecting arm 16 . The distance between the fourth bumps 165 of the connecting arm 16 is greater than the distance between the third bump 164 of the first connecting arm 16 and the fourth bump 165 of the first connecting arm 16 . The third ball 193 is provided separately from the first link arm 16 . There is a gap between the third ball 193 and the first connecting arm 16 , and there is no contact between the third ball 193 and the first connecting arm 16 . At this time, during the flattening or folding part of the electronic device 100 , there is no contact between the third ball 193 and the first connecting arm 16 .

In addition, when the electronic device 100 is in a closed state, the second elastic member 192 is deformed, and the second elastic member 192 is still in a compressed state, and the compression amount of the second elastic member 192 is the fourth compression amount. The fourth compression amount is smaller than the third compression amount. At this time, the second elastic member 192 still exerts a force along the negative direction of the Y-axis on the second abutting portion 1911 of the second bracket 191 . The third ball 193 abuts against the groove wall of the third rolling groove 1166 (refer to the position indicated by 1166 in FIG. 10 ). At this time, in the Y-axis direction, the second bracket 191 and the groove wall of the third rolling groove 1166 can limit the position of the third ball 193 .

In other embodiments, when the second rotating end 16b of the first connecting arm 16 adopts other structures, the third ball 193 can also abut against the second rotating end of the first connecting arm 16 when the electronic device 100 is in the closed state 16b. At this time, when the electronic device 100 is being flattened or folded, the third balls 193 are all in contact with the first connecting arm 16 .

Referring to FIGS. 34 to 36 , when the electronic device 100 is converted from the flattened state to the closed state, the first casing 102 is folded relative to the second casing 103 . The first rotating end 16a of the first connecting arm 16 rotates relative to the first fixing frame 12 . The second rotating end 16b of the first connecting arm 16 rotates relative to the main shaft 11 . The third ball 193 rolls relative to the second rotating end 16 b of the first connecting arm 16 . The third ball 193 rolls relative to the third bump 164 . It should be understood that during the partial folding process of the electronic device 100 , the third ball 193 rolls over the third bump 164 of the first connecting arm 16 . The third bump 164 of the first connecting arm 16 can make the third ball 193 roll along the positive direction of the Y-axis. The third ball 193 may press the second bracket 191 . The second bracket 191 can slide relative to the first housing 112 along the positive direction of the Y-axis. The second abutting portion 1911 of the second bracket 191 presses the second elastic member 192 . The second elastic member 192 can be deformed along the positive Y direction. At this time, the second elastic member 192 can press the third ball 193 to the second rotating end 16b of the first connecting arm 16 . The second elastic member 192 can exert a force on the second rotating end 16 b of the first connecting arm 16 through the third ball 193 , thereby further increasing the frictional force between the third ball 193 and the first connecting arm 16 . The folding speed of the first casing 102 is slower than that of the second casing 103 . In this way, on the one hand, the flexible screen 2 fixed on the first casing 102 and the second casing 103 is not easily damaged due to collision due to improper user operations; Feel the damping force. The damping force can enable the user to experience a better feel, thereby improving user experience.

In addition, through the cooperation between the third ball 193 and the third bump 164 of the first connecting arm 16, on the one hand, when the folding angle of the electronic device 100 is small, the electronic device 100 can be automatically unfolded to a flat state; It also allows the user to experience a flattened-in-place feel. Specifically, it will not be repeated here.

In addition, compared with the solution in which the second elastic member 192 directly acts on the second rotating end 16b of the first connecting arm 16 , in this embodiment, the second rotating end 16b of the first connecting arm 16 and the second elastic member 192 are connected A third ball 193 is arranged between the two, and the third ball 193 can convert the sliding relationship between the first elastic member 182 and the second rotating end 16b of the first connecting arm 16 into a rolling mode, thereby reducing the relationship between the second elastic member 192 and the first Frictional losses between the second rotating ends 16b of the connecting arms 16 .

Please refer to FIG. 35 again and in conjunction with FIG. 23 , when the electronic device 100 is in a flattened state, at least a part of the fourth ball 194 is located between the third protrusion 174 of the second connecting arm 17 and the first between the four bumps 175 . The fourth ball 194 is located on the side of the third bump 174 of the second connecting arm 17 close to the first rotating end 17 a of the second connecting arm 17 , that is, the fourth ball 194 and the first rotating end 17 a of the second connecting arm 17 The distance therebetween is smaller than the distance between the third protrusion 174 of the second connecting arm 17 and the first rotating end 17a of the second connecting arm 17 . In addition, the fourth ball 194 abuts against the second inclined surface 1741 of the third protrusion 174 of the second connecting arm 17 . Exemplarily, the fourth ball 194 can also abut against the arc-shaped arm 171 of the second connecting arm 17 . The fourth ball 194 can also abut against the fourth protrusion 175 of the second connecting arm 17 .

In addition, when the electronic device 100 is in a flattened state, the second elastic member 192 is deformed, and the second elastic member 192 is in a compressed state. At this time, the second elastic member 192 exerts a force along the negative direction of the Y-axis on the second abutting portion 1911 of the second bracket 191 . At this time, in the Y-axis direction, the second bracket 1911 and the second connecting arm 17 can limit the position of the fourth ball 194 .

It can be understood that when the electronic device 100 is in a flattened state, on the one hand, the second elastic member 192 is in a compressed state, and the second elastic member 192 can exert a negative force along the Y-axis on the second abutting portion 1911 of the second bracket 191 . On the other hand, the fourth ball 194 abuts against the second inclined surface 1741 of the third protrusion 174 of the second connecting arm 17 (please refer to FIG. 23 ). At this time, the second elastic member 192 can press the fourth ball 194 to the second rotating end 17b of the second connecting arm 17 . The second elastic member 192 can exert a force on the second rotating end 17b of the second connecting arm 17 through the fourth ball 194 . The frictional force between the fourth ball 194 and the second rotating end 17b of the second connecting arm 17 can be greatly increased. In this way, when the electronic device 100 is in the flattened state, the second rotating end 17b of the second connecting arm 17 is not easy to rotate relative to the main shaft 11 . Therefore, this frictional force may hinder the folding of the electronic device 100 to a certain extent. When the electronic device 100 is in a flat state, the stability of the electronic device 100 is better.

In addition, when the second elastic member 192 exerts a force on the second rotating end 17b of the second connecting arm 17 through the fourth ball 194, the second connecting arm 17 can receive a supporting force (also referred to as the extension force) along the positive direction of the Z-axis. flat support). The supporting force can prevent the second rotating end 17b of the second connecting arm 17 from rotating relative to the main shaft 11 to a certain extent, that is, the supporting force can hinder the folding of the electronic device 100 to a certain extent. Therefore, the supporting force can ensure that the electronic device 100 has better stability when it is in a flattened state.

In addition, when the fourth ball 194 abuts against the fourth bump 175 of the second connecting arm 17 , the fourth bump 175 of the second connecting arm 17 can also limit the fourth ball 194 to avoid the fourth ball 194 scrolls along the X-axis.

When the electronic device 100 is in the closed state, the positional relationship of the fourth ball 194 relative to the second rotating end 17b of the second connecting arm 17 may refer to the positional relationship of the third ball 193 relative to the second rotating end 16b of the first connecting arm 16 . I won't go into details here.

It can be understood that when the electronic device 100 is converted from the flattened state to the closed state, the first casing 102 is folded relative to the second casing 103 . The first rotating end 17 a of the second connecting arm 17 rotates relative to the second fixing frame 13 . The second rotating end 17b of the second connecting arm 17 rotates relative to the main shaft 11 . During the partial folding process of the electronic device 100 , the fourth ball 194 rolls relative to the second rotating end 17 b of the second connecting arm 17 and rolls relative to the third protrusion 174 . At this time, the fourth ball 194 rolls over the third protrusion 174 of the second connecting arm 17 . The second elastic member 192 can be deformed along the positive direction of the Y-axis. At this time, the second elastic member 192 can press the fourth ball 194 to the second rotating end 17b of the second connecting arm 17 . The second elastic member 192 can exert a force on the second rotating end 17b of the second connecting arm 17 through the fourth ball 194 to further increase the frictional force between the fourth ball 194 and the second connecting arm 17 . The folding speed of the first casing 102 is slower than that of the second casing 103 . In this way, on the one hand, the flexible screen 2 fixed on the first casing 102 and the second casing 103 is not easily damaged due to collision due to improper user operations; Feel the damping force. The damping force can enable the user to experience a better feel, thereby improving user experience.

In addition, compared with the solution in which the second elastic member 192 directly acts on the second rotating end 17b of the second connecting arm 17 , in this embodiment, the second rotating end 17b of the second connecting arm 17 and the second elastic member 192 are connected A fourth ball 194 is arranged between the two. The fourth ball 194 can convert the sliding relationship between the second elastic member 192 and the second rotating end 17b of the second connecting arm 17 into a rolling mode, thereby lowering the distance between the second elastic member 192 and the second rotating end 17b. Frictional losses between the second rotating ends 17b of the connecting arms 17 .

In addition, through the cooperation between the fourth ball 194 and the third bump 174 of the second connecting arm 17, on the one hand, when the folding angle of the electronic device 100 is small, the electronic device 100 can be automatically unfolded to a flat state; on the other hand, It also allows the user to experience a flattened-in-place feel. Specifically, it will not be repeated here.

Please refer to FIG. 37 . FIG. 37 is a schematic structural diagram of the first swing arm 31 , the gear module 33 and the second swing arm 32 shown in FIG. 6 . The first swing arm 31 includes a rotating end 311 and a movable end 312 . The first swing arm 31 may be an integrally formed structural member to have high structural strength.

The rotating end 311 of the first swing arm 31 includes a gear portion 3111 and a rotating shaft portion 3112 . The gears of the gear portion 3111 are located on the peripheral side thereof. The rotating shaft portion 3112 may include two parts, which are respectively protruded from both ends of the gear portion 3111 .

In addition, the movable end 312 of the first swing arm 31 includes a first sliding block 3121 , a second sliding block 3122 , a first rotating block 3123 , a second rotating block 3124 and a first movable notch 3125 . The first rotating block 3123 is disposed on the first sliding block 3121 . The second rotating block 3124 is disposed on the second sliding block 3122 . The first movable notch 3123 separates the first sliding block 3121 and the second sliding block 3122 . At this time, the first slider 3121 and the second slider 3122 are arranged at intervals. Both the first rotating block 3123 and the second rotating block 3124 are provided with rotating shaft holes 3126 . The shaft holes 3126 of the first rotating block 3123 and the second rotating block 3124 are both connected to the first movable notch 3125 .

It can be understood that the second swing arm 32 and the first swing arm 31 may have the same structure, mirror symmetry structure, partial mirror symmetry structure, centrosymmetric structure, partial center symmetry structure or different structures, which are not strictly limited in this application. In this embodiment, the arrangement of the structure of the second swing arm 32 may refer to the arrangement of the structure of the first swing arm 31 . For example, the second swing arm 32 includes a rotating end 321 and a movable end 322 . The rotating end 321 of the second swing arm 32 includes a gear part 3211 and a rotating shaft part 3212 . The gears of the gear portion 3211 are located on the peripheral side thereof. The rotating shaft portion 3212 may include two parts, which are respectively protruded from both ends of the gear portion 3211 . Specifically, it will not be repeated here.

Please refer to FIG. 37 again, the gear module 33 includes a plurality of gears 331 , two adjacent gears 331 among the plurality of gears 331 are engaged with each other, and the rotating end 311 of the first swing arm 31 meshes with the second swing arm through the plurality of gears 331 Rotary end 321 of 32. Exemplarily, a plurality of gears 331 can be arranged in a series, two adjacent gears 331 are meshed with each other, and the two gears 331 at both ends are respectively engaged with the rotation end 311 of the first swing arm 31 and the rotation of the second swing arm 32 . end 321. The gear 331 may include a gear part 3311 and a rotating shaft part 3312 . The rotating shaft part 3312 may include two parts, which are respectively located at two ends of the gear part 3311 . It can be understood that the number and size of the gears 331 of the gear module 33 can be designed according to the specific shape and size of the product, which is not strictly limited in this application.

Please refer to FIG. 38 in conjunction with FIG. 16 . FIG. 38 is a partial structural diagram of the folding device 1 shown in FIG. 2 . The rotating end 311 of the first swing arm 31 , the gear module 33 and the rotating end 321 of the second swing arm 32 are disposed on the main shaft 11 , for example, can be disposed in the third receiving space 1169 of the main shaft 11 . It should be noted that the third accommodating space 1169 is jointly surrounded by the first casing 112 and the base 111 . In FIG. 38 , in order to be able to illustrate the rotating end 311 of the first swing arm 31 , the gear module 33 and the rotating end 321 of the second swing arm 32 , the base 111 is not shown in FIG. 38 .

Please refer to Fig. 39 in combination with Fig. 37 and Fig. 38. Fig. 39 is an enlarged schematic view of the part of the folding device 1 shown in Fig. 38 at B3. One rotating shaft portion 3112 of the first swing arm 31 is disposed in the first rotating shaft groove 1126 of the first casing 112, and the other rotating shaft portion 3112 of the first swing arm 31 is disposed in the second rotating shaft groove 1127 of the first casing 112, so that the The rotating end 311 of a swing arm 31 can be rotatably connected to the main shaft 11 .

In addition, one rotating shaft portion 3212 of the rotating end 321 of the second swing arm 32 can be disposed in the first rotating shaft groove 1126 of the first housing 112, and the other rotating shaft portion 3212 of the rotating end 321 of the second swing arm 32 can be disposed in the first casing 112 of the second shaft groove 1127, so that the rotating end 321 of the second swing arm 32 is rotatably connected to the main shaft 11.

In addition, the two rotating shaft portions 3312 of the gear 331 can also be respectively disposed in the first rotating shaft groove 1126 and the second rotating shaft groove 1127 of the first housing 112 , so that each gear 331 of the gear module 33 can be rotatably connected to the main shaft 11 .

In this embodiment, the wall surface of the first housing 112 can limit the rotation end 311 of the first swing arm 31 , the gear module 33 and the rotation end 321 of the second swing arm 32 in the Y-axis direction.

Please refer to FIG. 40 , in conjunction with FIG. 38 and FIG. 39 , FIG. 40 is a partial structural schematic diagram of the folding device 1 shown in FIG. 2 . When the base 111 is fixedly connected to the first housing 112 , the base 111 can cover the rotating shaft portion 3112 of the rotating end 311 of the first swing arm 31 , the rotating shaft portions 3312 of the plurality of gears 331 and the rotating shaft of the rotating end 321 of the second swing arm 32 The portion 3212 is positioned so as to limit the position of the rotating end 311 of the first swing arm 31 , the gear module 33 and the rotating end 321 of the second swing arm 32 in the Z-axis direction. In this way, the matching relationship between the rotating end 311 of the first swing arm 31 , the gear module 33 and the rotating end 321 of the second swing arm 32 and the main shaft 11 is more stable, and the reliability of the folding mechanism 101 is higher.

Please refer to FIG. 38 again, the movable end 312 of the first swing arm 31 is slidably connected to the first fixing frame 12 . In addition, the rotating end 311 of the first swing arm 31 is rotatably connected to the main shaft 11 . In this way, the first fixing frame 12 can be rotatably connected to the main shaft 11 through the first swing arm 31 , and can be moved in a direction close to or away from the main shaft 11 through the first swing arm 31 .

In addition, the movable end 322 of the second swing arm 32 is slidably connected to the second fixing frame 13 . The rotating end 321 of the second swing arm 32 is rotatably connected to the main shaft 11 . In this way, the second fixing frame 13 can be rotatably connected to the main shaft 11 through the second swing arm 32 , and can be moved in a direction close to or away from the main shaft 11 through the second swing arm 32 .

In addition, as can be seen from the above, the first fixing frame 12 is fixedly connected to the first casing 102 , and the second fixing frame 13 is fixedly connected to the second casing 103 . At this time, when the first fixed frame 12 is rotatably connected to the main shaft 11 through the first swing arm 31 , and the second fixed frame 13 is rotatably connected to the main shaft 11 through the second swing arm 32 , the first housing 102 can be relative to the second housing 103 is rotated, that is, the first casing 102 and the second casing 103 can be relatively unfolded or folded relatively. In addition, when the first fixed frame 12 moves in a direction close to or away from the main shaft 11 through the first swing arm 31, and the second fixed frame 13 moves in a direction close to or away from the main shaft 11 through the second swing arm 32, the first housing 102 and the second housing 103 can also move in the direction of approaching or moving away from the main shaft 11 .

Please refer to FIG. 41 in combination with FIG. 17 and FIG. 37 . FIG. 41 is a cross-sectional view of the partial folding device 1 shown in FIG. 38 at the line B4-B4. Part of the movable end 312 of the first swing arm 31 is located in the first movable notch 1263 of the first fixing frame 12 . In addition, the first sliding block 3121 of the movable end 312 of the first swing arm 31 is disposed in the first sliding groove 1261 of the first fixing frame 12 and can slide in the first sliding groove 1261 . The second sliding block 3122 of the movable end 312 of the first swing arm 31 is disposed in the second sliding groove 1262 of the first fixing frame 12 and can slide in the second sliding groove 1262 . In this way, the movable end 312 of the first swing arm 31 can be slidably connected to the first fixing frame 12 . It can be understood that the connection relationship between the movable end 322 of the second swing arm 32 and the second fixing frame 13 may refer to the connection relationship between the movable end 312 of the first swing arm 31 and the first fixing frame 12 . Specifically, it will not be repeated here.

Please refer to FIG. 42 . FIG. 42 is a schematic structural diagram of the first support plate 14 and the second support plate 15 shown in FIG. 6 . The first support plate 14 has a second support surface 105 . The second support surface 105 may be flat. The second support plate 15 has a third support surface 106 . The third support surface 106 may be flat.

Please refer to FIG. 43 in conjunction with FIG. 42 . FIG. 43 is a schematic structural diagram of the first support plate 14 and the second support plate 15 shown in FIG. 42 at another angle. The first support plate 14 also has a first fixing surface 107 . The first fixing surface 107 is arranged opposite to the second supporting surface 105.

Please refer to FIG. 44 in conjunction with FIG. 43 . FIG. 44 is an enlarged schematic view of the first support plate 14 at B5 described in FIG. 43 . The first support plate 14 includes a first movable block 141 and a first rotating arm 142 . FIG. 43 illustrates two first rotating arms 142 and one first movable block 141 . The first movable block 141 and the first rotating arm 142 are both located on the first fixed surface 107 . The first movable block 141 has a first arc-shaped hole 143 . The first movable block 141 of the first support plate 14 and the first rotating arm 142 together form a connection structure. The first support plate 14 may include a plurality of connecting structures arranged at intervals.

Wherein, the second support plate 15 and the first support plate 14 may have the same structure, mirror symmetry structure, partial mirror symmetry structure, centrosymmetric structure, partial centrosymmetric structure or different structures, which are not strictly limited in this application. In this embodiment, the second support plate 15 and the first support plate 14 are mirror-symmetrical structures. For the arrangement of the structure of the second support plate 15 , please refer to the arrangement of the structure of the first support plate 14 . Specifically, it will not be repeated here.

Please refer to FIG. 45 , in conjunction with FIG. 40 , FIG. 45 is a schematic structural diagram of the folding device 1 shown in FIG. 2 . The first support plate 14 is disposed on the top surface 121 of the first fixing frame 12 . The second support plate 15 is disposed on the top surface 131 of the second fixing frame 13 . The main shaft 11 is located between the first support plate 14 and the second support plate 15 . The second support surface 105 of the first support plate 14 , the first support surface 104 of the main shaft 11 and the third support surface 106 of the second support plate 15 all face the same side. The second support surface 105 of the first support plate 14 faces away from the first fixing frame 12 . The third support surface 106 of the second support plate 15 faces away from the second fixing frame 13 .

2 , when the electronic device 100 is in a flattened state, the main shaft 11 is located on the first support plate 14 and the second support plate 15 , and the second support surface 105 of the first support plate 14 and the first support of the main shaft 11 The surface 104 and the third support surface 106 of the second support plate 15 jointly support the bent portion 22 of the flexible screen 2, so that when the bent portion 22 is touched, the bent portion 22 is not easily damaged or concave due to external force. problems such as pits, thereby improving the reliability of the flexible screen 2.

Exemplarily, when the electronic device 100 is in a flattened state, the first support surface 104 of the spindle 11 , the second support surface 105 of the first support plate 14 and the third support surface 106 of the second support plate 15 are flush. At this time, the flatness of the bending portion 22 of the flexible screen 2 is better, and the user experience is higher.

With reference to FIG. 4 , when the electronic device 100 is in the closed state, the first support plate 14 and the second support plate 15 are located between the first housing 102 and the second housing 103 , and the second support of the first support plate 14 The surface 105 and the third support surface 106 of the second support plate 15 are arranged facing each other. The second support surface 105 of the first support plate 14 is inclined relative to the third support surface 106 of the second support plate 15 . The first support plate 14 and the second support plate 15 are substantially V-shaped. The second support surface 105 of the first support plate 14 and the third support surface 106 of the second support plate 15 support the bent portion 22 , so that the bent portion 22 substantially forms a “water drop” shape.

Please refer to FIG. 46 in conjunction with FIG. 37 . FIG. 46 is a partial cross-sectional schematic diagram of the partial folding device 1 shown in FIG. 45 at the line B6-B6. The movable end 312 of the first swing arm 31 is slidably and rotatably connected to the first support plate 14 . Exemplarily, the first movable block 141 of the first support plate 14 is located at the first movable notch 3125 of the first swing arm 31 . The first movable block 141 of the first support plate 14 is located between the first rotating block 3123 and the second rotating block 3124 of the first swing arm 31 . In addition, the rotating shaft holes 3126 of the first rotating block 3123 and the second rotating block 3124 are both disposed opposite to the first arc-shaped holes 143 of the first support plate 14 . By passing the pin shaft 109 through the shaft hole 3126 of the first rotating block 3123 , the first arc-shaped hole 143 of the first support plate 14 and the rotating shaft hole 3126 of the second rotating block 3124 . The middle part of the pin shaft 109 can slide and rotate in the first arc-shaped hole 143 of the first support plate 14 .

Exemplarily, one end of the pin shaft 109 is fixedly connected to the rotating shaft hole 3126 of the first rotating block 3123 , and the other end is fixedly connected to the rotating shaft hole 3126 of the second rotating block 3124 .

Exemplarily, one end of the pin shaft 109 is rotatably connected to the rotating shaft hole 3126 of the first rotating block 3123 , and the other end is rotatably connected to the rotating shaft hole 3126 of the second rotating block 3124 .

Referring to FIG. 46 again, when the electronic device 100 is in a flattened state, the pin shaft 109 is located at the end wall of the first arc-shaped hole 143 away from the rotating end 311 of the first swing arm 31 .

Please refer to FIG. 47. FIG. 47 is a sectional view of the partial folding device 1 shown in FIG. 46 in a closed state. When the electronic device 100 is in the closed state, the pin shaft 109 is located at the end wall of the first arc-shaped hole 143 close to the rotating end 311 of the first swing arm 31 .

In this embodiment, the movable end 322 of the second swing arm 32 is rotated and slidably connected to the second support plate 15 . For the connection method between the movable end 322 of the second swing arm 32 and the second support plate 15 , please refer to the connection method between the movable end 312 of the first swing arm 31 and the first support plate 14 . I won't go into details here.

Please refer to FIG. 48 in conjunction with FIG. 17 . FIG. 48 is a partial cross-sectional schematic diagram of the partial folding device 1 shown in FIG. 45 at the line B7-B7. The first support plate 14 is also rotatably connected to the first fixing frame 12 . In this embodiment, the first rotating arm 142 of the first support plate 14 is disposed in the first arc-shaped groove 127 of the first fixing frame 12 , and the arc-shaped first rotating arm 142 can be positioned on the first arc-shaped groove 127 of the first fixing frame 12 . An arc-shaped groove 127 rotates to form a virtual shaft rotational connection relationship between the arc-shaped arm and the arc-shaped groove, so that the first rotating arm 142 of the first support plate 14 is rotatably connected to the first fixing frame 12 . The first supporting plate 14 and the first fixing frame 12 are connected by a virtual axis, so that the first supporting plate 14 and the first fixing frame 12 can be made thinner, which is beneficial to the thinning of the folding device 1 . In other embodiments, the first support plate 14 and the first fixing frame 12 may also be rotatably connected through a solid shaft.

Referring to FIG. 48 again, when the electronic device 100 is in the flattened state, the first rotating arm 142 of the first support plate 14 can be partially rotated into the first arc-shaped groove 127 of the first fixing frame 12 .

Please refer to FIG. 49. FIG. 49 is a sectional view of the partial folding device 1 shown in FIG. 48 in a closed state. When the electronic device 100 is in the closed state, the first rotating arms 142 of the first support plate 14 can all be rotated into the first arc-shaped grooves 127 of the first fixing frame 12 .

In this embodiment, the second support plate 15 is rotatably connected to the second fixing frame 13 . For the connection method of the second support plate 15 and the second fixing frame 13 , please refer to the connection method of the first support plate 14 and the first fixing frame 12 . I won't go into details here.

Please refer to FIG. 46 and FIG. 48 together. When the electronic device 100 is in a flattened state, the first fixing frame 12 and the second fixing frame 13 are in the open position relative to the main shaft 11 , and the main shaft 11 is located at the first fixing frame 12 and the second fixing frame. Between racks 13. The first rotating arm 142 of the first supporting plate 14 is partially rotated out of the first arc-shaped groove 127 of the first fixing frame 12 . The pin shaft 109 is located at the end wall of the first arc-shaped hole 143 of the first support plate 14 away from the rotating end 311 of the first swing arm 31 . For the positional relationship between the second support plate 15 , the second fixing frame 13 and the second swing arm 32 , please refer to the positional relationship between the first support plate 14 , the first fixing frame 12 and the first swing arm 31 . At this time, the first support plate 14 and the second support plate 15 are relatively unfolded and are in the open position. The second support surface 105 of the first support plate 14 , the first support surface 104 of the spindle 11 and the third The support surface 106 may be flush. 2 , the second support surface 105 of the first support plate 14 , the first support surface 104 of the spindle 11 and the third support surface 106 of the second support plate 15 can jointly support the bending portion 22 of the flexible screen 2 .

47 and 49, when the electronic device 100 is in the closed state, the first fixing frame 12 and the second fixing frame 13 are in the closed position relative to the main shaft 11, and the first fixing frame 12 and the second fixing frame 13 are close to each other. The first rotating arm 142 of the first supporting plate 14 is completely rotated into the first arc-shaped groove 127 of the first fixing frame 12 . The pin shaft 109 is located at the end wall of the first arc-shaped hole 143 of the first support plate 14 close to the rotating end 311 of the first swing arm 31 . For the positional relationship between the second support plate 15 , the second fixing frame 13 and the second swing arm 32 , please refer to the positional relationship between the first support plate 14 , the first fixing frame 12 and the first swing arm 31 . At this time, the first support plate 14 and the second support plate 15 are folded relative to each other and are in the closed position. The directions of the main shafts 11 are away from each other. With reference to FIG. 4 , the first support plate 14 and the second support plate 15 can make the bent portion 22 of the flexible screen 2 appear in a “water drop” shape.

Please refer to FIGS. 46 to 49 together. During the transition between the flattened state and the closed state of the electronic device 100 , the first fixing frame 12 and the second fixing frame 13 are switched from the open position to the closed position. The movable end 312 of the first swing arm 31 can drive the first movable block 141 of the first support plate 14 to move relative to the main shaft 11 . At this time, the pin shaft 109 moves from the end of the first arc hole 143 away from the rotating end 311 of the first swing arm 31 to the end wall of the first arc hole 143 close to the rotating end 311 of the first swing arm 31 . The first rotating arm 142 of the first support plate 14 is switched from being partially located in the first arc-shaped groove 127 of the first fixing frame 12 to being completely rotated into the first arc-shaped groove 127 of the first fixing frame 12 . The first support plate 14 and the second support plate 15 are switched from the open position to the closed position. The movement mode of the second support plate 15 may refer to the movement mode of the first support plate 14 . The details are not repeated here.

This embodiment introduces a folding mechanism 101 and an electronic device 100 . The folding mechanism 101 may be applied to the electronic device 100 . The folding mechanism 101 can make the flexible screen 2 unfold or fold, so that the electronic device 100 can be converted between the unfolded state and the closed state. The folding mechanism 101 can reduce the risk of pulling or squeezing the flexible screen 2 in the process of unfolding or folding, so as to protect the flexible screen 2 and improve the reliability of the flexible screen 2, so that the flexible screen 2 has a longer service life.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, and should cover within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An electronic device (100), characterized by comprising a folding mechanism (101), a first casing (102) and a second casing (103), the folding mechanism (101) being connected to the first casing (101). 102) and the second casing (103);

The folding mechanism (101) includes a main shaft (11), a first connecting arm (16), a first ball (183) and a first elastic component (180);

The first connecting arm (16) includes a first rotating end (16a) and a second rotating end (16b), and the first rotating end (16a) of the first connecting arm (16) is connected to the first housing (102), the second rotating end (16b) of the first connecting arm (16) is rotatably connected to the main shaft (11), the first ball (183) and the first elastic component (180) are both provided on the main shaft (11);

When the electronic device (100) is in a flattened state, the first ball (183) is located between the first elastic component (180) and the second rotating end (16b) of the first connecting arm (16) During the time, the first elastic component (180) presses against the first ball (183), and the first ball (183) presses against the second rotating end (16b) of the first connecting arm (16);

During at least part of the unfolding or folding process of the electronic device (100), the second rotating end (16b) of the first connecting arm (16) rotates relative to the main shaft (11), and the first elastic component (16b) rotates relative to the main shaft (11). 180) is deformed, and the first ball (183) rolls relative to the second rotating end (16b) of the first connecting arm (16).
The electronic device (100) according to claim 1, wherein the deformation direction of the first elastic component (180) is parallel to the longitudinal extension direction of the main shaft (11).
The electronic device (100) according to claim 1 or 2, wherein the second rotating end (16b) of the first connecting arm (16) comprises an arc-shaped arm (161), and the first connecting arm (16) comprises an arc-shaped arm (161). The arc-shaped arm (161) of (16) is rotatably connected to the main shaft (11), the arc-shaped arm (161) of the first connecting arm (16) has a first side surface (1614), and the first side surface (1614) ) protrudingly provided with the first bump (162);

When the electronic device (100) is in a flattened state, the first ball (183) abuts against the first side surface (1614);

During the unfolding or folding process of the electronic device (100), the first ball (183) rolls relative to the first bump (162).
The electronic device (100) according to claim 3, wherein the first bump (162) of the first connecting arm (16) has a first inclined surface (1621), and the first inclined surface ( 1621) connecting the first side surface (1614) of the first connecting arm (16);

When the electronic device (100) is in a flattened state, the first ball (183) abuts against the first inclined surface (1621) of the first connecting arm (16).
The electronic device (100) according to claim 3 or 4, wherein the second rotating end (16b) of the first connecting arm (16) comprises a second protrusion (163), the second protrusion A block (163) is protrudingly disposed on the first side surface (1614) of the first connecting arm (16), and the second protruding block (163) is spaced apart from the first protruding block (162);

When the electronic device (100) is in a flattened state, at least a part of the first ball (183) is located between the first bump (162) and the second bump (163).
The electronic device (100) according to any one of claims 3 to 5, wherein the main shaft (11) comprises a base (111) and a first housing (112), the first housing (112) It is fixedly connected to the base (111), and the first casing (112) and the base (111) together enclose a first receiving space (1161), a first rolling groove (1162) and a first arc that are communicated in sequence. Slot(1164);

The first elastic component (180) is arranged in the first accommodation space (1161), at least part of the first ball (183) is connected to the first rolling groove (1162) in a rolling manner, and the first connection The arc-shaped arm (161) of the arm (16) is rotatably connected to the first arc-shaped groove (1164).
The electronic device (100) according to any one of claims 1 to 6, wherein the folding mechanism (101) further comprises a second connecting arm (17) and a second ball (184);

The second connecting arm (17) includes a first rotating end (17a) and a second rotating end (17b), and the first rotating end (17a) of the second connecting arm (17) is connected to the second housing (103), the second rotating end (17b) of the second connecting arm (17) is rotatably connected to the main shaft (11), the second ball (184) is arranged on the main shaft (11), and is connected to the main shaft (11). the first balls (183) are arranged at intervals;

When the electronic device (100) is in a flattened state, the second ball (184) is located between the first elastic component (180) and the second rotating end (17b) of the second connecting arm (17) During the time, the first elastic component (180) abuts against the second ball (184), and the second ball (184) abuts against the second rotating end (17b) of the second connecting arm (17);

During at least part of the unfolding or folding of the electronic device (100), the second rotating end (17b) of the second connecting arm (17) rotates relative to the main shaft (11), and the second ball (184) rotates relative to the main shaft (11). ) rolls relative to the second rotating end (17b) of the second connecting arm (17).
The electronic device (100) according to claim 7, wherein the first elastic component (180) comprises a first bracket (181) and a first elastic member (182), the first bracket (181) The main shaft (11) is slidably connected, the first bracket (181) includes a first abutting part (1811) and a first guide part (1812), and the first guide part (1812) is fixedly connected to the first Resistance (1811);

The first elastic member (182) is sleeved with the first guide portion (1812), one end of the first elastic member (182) abuts the first abutting portion (1811), and the other end abuts the first abutting portion (1811). said main shaft (11);

A part of the first ball (183) is in contact with the first abutting portion (1811), and the first abutting portion (1811) is disposed on the first ball (183) and the first elastic member (182);

A part of the second ball (184) is in contact with the first abutting portion (1811), and the first abutting portion (1811) is disposed on the second ball (184) and the first elastic member (182) between.
The electronic device (100) according to claim 8, characterized in that, the first abutting portion (1811) of the first bracket (181) is provided with a first limiting groove (1813) and a second limiting groove (1813) arranged at intervals Limit slot(1814);

A part of the first ball (183) is in contact with the first abutting part (1811), including: a part of the first ball (183) is in contact with the first limiting groove (1813);

A part of the second ball (184) is in contact with the first abutting part (1811), including: a part of the second ball (184) is located in the second limiting groove (1814).
The electronic device (100) according to any one of claims 1 to 9, wherein the folding mechanism (101) further comprises a third ball (193) and a second elastic component (190), the first The three balls (193) and the second elastic component (190) are both arranged on the main shaft (11);

When the electronic device (100) is in a flattened state, the third ball (193) is located between the second elastic component (190) and the second rotating end (16b) of the first connecting arm (16) During the time, the second elastic component (190) presses against the third ball (193), and the third ball (193) presses against the second rotating end (16b) of the first connecting arm (16);

During at least part of the unfolding or folding of the electronic device (100), the second elastic component (190) is deformed, and the third ball (193) is opposite to the second elastic member of the first connecting arm (16). The rotating end (16b) rolls, and the deformation direction of the second elastic component (190) is opposite to the deformation direction of the first elastic component (180).
The electronic device (100) according to any one of claims 1 to 10, characterized in that, when the electronic device (100) is in a closed state, the first ball (183) is connected to the first connecting arm The second rotating end (16b) of (16) is provided separately.
The electronic device (100) according to any one of claims 1 to 11, wherein the folding mechanism (101) further comprises a first fixing frame (12) and a second fixing frame (13), the The first fixing frame (12) is fixedly connected to the first casing (102), and the second fixing frame (13) is fixedly connected to the second casing (103);

The first rotating end (16a) of the first connecting arm (16) is rotatably connected to the first fixing frame (12), and the first rotating end (17a) of the second connecting arm (17) is rotatably connected to the first fixing frame (12). The second fixing frame (13).
The electronic device (100) according to claim 12, wherein the first rotating end (16a) of the first connecting arm (16) is provided with a rotating hole;

The first fixing frame (12) is provided with a rotating hole;

The rotating shaft (108) is rotatably connected with the first fixing frame (12) at least through the rotation hole of the first fixing frame (12);

The rotating shaft and the first connecting arm (16) are rotatably connected at least through the rotating hole of the first rotating end (16a).
The electronic device (100) according to claim 13, wherein the folding mechanism (101) further comprises a first swing arm (31) and a second swing arm (32);

The first swing arm (31) includes a rotating end (311) and a movable end (312). The rotating end (311) of the first swing arm (31) is rotatably connected to the main shaft (11). The movable end (312) of (31) is slidably connected to the first fixing frame (12); the second swing arm (32) includes a rotating end (321) and a movable end (322), and the second swing arm ( The rotating end (321) of 32) is rotatably connected to the main shaft (11), and the movable end (322) of the second swing arm (32) is slidably connected to the second fixing frame (13).
The electronic device (100) according to claim 14, wherein the folding mechanism (101) further comprises a plurality of gears (331), and each gear (331) is rotatably connected to the main shaft (11) , the two adjacent gears (331) mesh with each other, and the rotating end (311) of the first swing arm (31) meshes with the second swing arm (32) through the plurality of gears (331). Swivel end (321).
The electronic device (100) according to claim 14, wherein the folding mechanism (101) further comprises a first support plate (14) and a second support plate (15);

The first supporting plate (14) is slidably and rotatably connected to the movable end (312) of the first swing arm (31), and the first supporting plate (14) is rotatably connected to the first fixing frame (12); The second support plate (15) is slidably and rotatably connected to the movable end (322) of the second swing arm (32), and the second support plate (15) is rotatably connected to the second fixing frame (13);

When the electronic device (100) is in a flattened state, the first support plate (14) and the second support plate (15) are respectively located on both sides of the main shaft (11); the electronic device (100) is in the In the closed state, the first support plate (14) is arranged opposite to the second support plate (15).
The electronic device (100) according to claim 16, wherein the movable end (312) of the first swing arm (31) comprises a first sliding block (3121), a second sliding block (3122), a first sliding block (3122), a A rotating block (3123) and a second rotating block (3124), the first sliding block (3121) and the second sliding block (3122) are arranged at intervals, and the first rotating block (3123) is disposed on the first sliding block (3121), the second rotating block (3124) is provided on the second sliding block (3122), and both the first rotating block (3123) and the second rotating block (3124) are provided with a rotating shaft hole ( 3126), the rotating shaft hole (3126) of the first rotating block (3123) and the rotating shaft hole (3126) of the second rotating block (3124) are arranged opposite to each other;

The first sliding block (3121) of the first swing arm (31) is slidably connected to the first sliding groove (1261) of the first fixing frame (12), and the second sliding block of the first swing arm (31) (3122) slidably connected to the second chute (1262) of the first fixing frame (12);

The first support plate (14) has a first arc-shaped hole (143), and the first arc-shaped hole (143) is located at the first rotating block (3123) and the second rotating block (3123) of the first swing arm (31). Between the rotating blocks (3124), one end of the pin shaft (109) rotates or is fixedly connected to the first rotating block (3123), and the other end of the pin shaft (109) rotates or is fixedly connected to the second rotating block ( 3124) of the shaft hole (3126), the middle of the pin shaft (109) is slidably connected to the first arc-shaped hole (143).
A folding mechanism (101), characterized in that it comprises a main shaft (11), a first connecting arm (16), a first ball (183) and a first elastic component (180);

The second rotating end (16b) of the first connecting arm (16) is rotatably connected to the main shaft (11), and the first ball (183) and the first elastic component (180) are both arranged on the main shaft (11);

When the folding mechanism (101) is in a flattened state, the first ball (183) is located between the first elastic component (180) and the second rotating end (16b) of the first connecting arm (16) During the time, the first elastic component (180) presses against the first ball (183), and the first ball (183) presses against the second rotating end (16b) of the first connecting arm (16);

During at least part of the unfolding or folding process of the folding mechanism (101), the second rotating end (16b) of the first connecting arm (16) rotates relative to the main shaft (11), and the first elastic component (16b) rotates relative to the main shaft (11). 180) is deformed, and the first ball (183) rolls relative to the second rotating end (16b) of the first connecting arm (16).
The folding mechanism (101) according to claim 18, wherein the second rotating end (16b) of the first connecting arm (16) comprises an arc-shaped arm (161), and the first connecting arm (16) The arc-shaped arm (161) of the first connecting arm (16) is rotatably connected to the main shaft (11), and the arc-shaped arm (161) of the first connecting arm (16) has a first side surface (1614), and the first side surface (1614) is convex is provided with the first bump (162);

When the folding mechanism (101) is in a flattened state, the first ball (183) abuts against the first side surface (1614);

During the unfolding or folding process of the folding mechanism (101), the first ball (183) rolls relative to the first projection (162).
The folding mechanism (101) according to claim 19, wherein the first protrusion (162) of the first connecting arm (16) has a first inclined surface (1621), and the first inclined surface ( 1621) connecting the first side surface (1614) of the first connecting arm (16);

When the folding mechanism (101) is in a flattened state, the first ball (183) abuts against the first inclined surface (1621) of the first connecting arm (16).
The folding mechanism (101) according to claim 19 or 20, wherein the second rotating end (16b) of the first connecting arm (16) comprises a second protrusion (163), the second protrusion A block (163) is protrudingly disposed on the first side surface (1614) of the first connecting arm (16), and the second protruding block (163) is spaced apart from the first protruding block (162);

When the folding mechanism (101) is in a flattened state, at least a part of the first ball (183) is located between the first protrusion (162) and the second protrusion (163).
The folding mechanism (101) according to any one of claims 19 to 21, wherein the main shaft (11) comprises a base (111) and a first shell (112), the first shell (112) It is fixedly connected to the base (111), and the first casing (112) and the base (111) together enclose a first receiving space (1161), a first rolling groove (1162) and a first arc that are communicated in sequence. Slot(1164);

The first elastic component (180) is arranged in the first accommodation space (1161), at least part of the first ball (183) is connected to the first rolling groove (1162) in a rolling manner, and the first connection The arc-shaped arm (161) of the arm (16) is rotatably connected to the first arc-shaped groove (1164).
The folding mechanism (101) according to any one of claims 18 to 22, wherein the folding mechanism (101) further comprises a second connecting arm (17) and a second ball (184);

The second rotating end (17b) of the second connecting arm (17) is rotatably connected to the main shaft (11), and the second ball (184) is arranged on the main shaft (11);

When the folding mechanism (101) is in a flattened state, the second ball (184) is located between the first elastic component (180) and the second rotating end (17b) of the second connecting arm (17) During the time, the first elastic component (180) abuts against the second ball (184), and the second ball (184) abuts against the second rotating end (17b) of the second connecting arm (17);

During at least part of the unfolding or folding process of the folding mechanism (101), the second rotating end (17b) of the second connecting arm (17) rotates relative to the main shaft (11), and the first elastic component (17b) rotates relative to the main shaft (11). 180) is deformed, and the second ball (184) rolls relative to the second rotating end (17b) of the second connecting arm (17).
The folding mechanism (101) according to claim 23, wherein the first elastic component (180) comprises a first bracket (181) and a first elastic member (182), the first bracket (181) The main shaft (11) is slidably connected, the first bracket (181) includes a first abutting part (1811) and a first guide part (1812), and the first guide part (1812) is connected to the first Resistance (1811);

The first elastic member (182) is sleeved with the first guide portion (1812), one end of the first elastic member (182) abuts the first abutting portion (1811), and the other end abuts the first abutting portion (1811). said main shaft (11);

A part of the first ball (183) is in contact with the first abutting portion (1811), and the first abutting portion (1811) is disposed on the first ball (183) and the first elastic member (182);

A part of the second ball (184) is in contact with the first abutting portion (1811), and the first abutting portion (1811) is disposed on the second ball (184) and the first elastic member (182) between.
The folding mechanism (101) according to any one of claims 18 to 24, wherein the folding mechanism (101) further comprises a third ball (193) and a second elastic component (190), the first The three balls (193) and the second elastic component (190) are both arranged on the main shaft (11);

When the folding mechanism (101) is in a flattened state, the third ball (193) is located between the second elastic component (190) and the second rotating end (16b) of the first connecting arm (16) During the time, the second elastic component (190) presses against the third ball (193), and the third ball (193) presses against the second rotating end (16b) of the first connecting arm (16);

During at least part of the unfolding or folding process of the folding mechanism (101), the second elastic component (190) is deformed, and the third ball (193) is opposite to the second elastic member of the first connecting arm (16). The rotating end (16b) rolls, and the deformation direction of the second elastic component (190) is opposite to the deformation direction of the first elastic component (180).
The folding mechanism (101) according to any one of claims 18 to 25, wherein when the folding mechanism (101) is in a closed state, the first ball (183) is connected to the first connecting arm The second rotating end (16b) of (16) is provided separately.