CN217784008U - Rotating mechanism and electronic equipment - Google Patents

Abstract

The application provides a rotating mechanism and an electronic device. The rotating mechanism comprises a mounting seat, a first shaft body, a first sleeve and a first synchronous swinging arm; the first shaft body with mount pad fixed connection, first sleeve with first synchronous swing arm fixed connection, first sleeve cover establish to on the first shaft body, first sleeve with cooperation between the first shaft body is interference fit, first sleeve has first gap, first gap is followed first telescopic radial direction runs through first telescopic internal surface and surface, first gap is followed first telescopic axial direction extends, first sleeve can be relative the first shaft body rotates, and drives first synchronous swing arm is relative the mount pad rotates. The damping force of the rotating mechanism is stable, and the working performance of the folding terminal product is good.

Description

Rotating mechanism and electronic equipment

Technical Field

The application relates to the technical field of folding, especially, relate to a slewing mechanism and electronic equipment.

Background

As the flexible folding screen technology becomes mature, the application of the folding terminal product becomes wider and wider. Folding terminal products (such as folding mobile phones, folding tablets, folding computers, etc.) need to meet higher appearance and better experience, so that the folding terminal products can be accepted by consumers. At present, a rotating mechanism of a folding terminal product generates mechanical force by extruding a spring and realizes a hovering stable state through a concave-convex wheel, but the requirement on the spring applied to the folding terminal product is high, and damping force is difficult to control to influence the working performance of the folding terminal product.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a slewing mechanism and electronic equipment, slewing mechanism's damping force is stable, and folding terminal product's working property is good.

In a first aspect, the present application provides a rotation mechanism, where the rotation mechanism includes a mounting seat, a first shaft body, a second shaft body, a first synchronous swing arm, a second synchronous swing arm, a first sleeve, and a second sleeve, where the first shaft body and the second shaft body are fixedly connected to the mounting seat, and the first shaft body and the second shaft body are distributed on two sides of the mounting seat;

the first sleeve is fixedly connected with the first synchronous swing arm, the first sleeve is sleeved on the first shaft body, the fit between the first sleeve and the first shaft body is interference fit, the first sleeve is provided with a first gap, the first gap penetrates through the inner surface and the outer surface of the first sleeve along the radial direction of the first sleeve, the first gap extends along the axial direction of the first sleeve, and the first sleeve can rotate relative to the first shaft body and drive the first synchronous swing arm to rotate relative to the mounting seat;

the second sleeve with synchronous swing arm fixed connection of second, the second sleeve cover is established extremely on the second shaft body, the second sleeve with cooperation between the second shaft body is interference fit, the second sleeve has the second gap, the second gap is followed the telescopic radial direction of second runs through the telescopic internal surface of second and surface, the second gap is followed the telescopic axial direction of second extends, the second sleeve can be relative the second shaft body rotates, and drives the synchronous swing arm of second is relative the mount pad rotates.

The first shaft body, the second shaft body, the first sleeve and the second sleeve can jointly form a damping assembly of the rotating mechanism.

From this, can be through first axis body and first sleeve interference fit, and make first sleeve have the expansion trend, also promptly, first axis body extrudees first sleeve, and then produces the resistance to the rotation of first synchronous swing arm, forms the damping force. In other words, the damping force of the damping assembly can be provided by the pressing force between the first sleeve and the first shaft body. On the one hand, because the stability of damping force is influenced by the quality of contact surface great, and the contact surface area between first sleeve and the primary shaft body is great, and the processing degree of difficulty of contact surface is low, and the contact surface quality is high, and the magnitude of interference between first sleeve and the primary shaft body is stable, so it is strong to adopt the cooperation of primary shaft body and first sleeve to provide the stability of damping force, can reduce the torsion fluctuation of slewing mechanism folding and expansion in-process. On the other hand, unsmooth wheeled damping among the prior art needs to cooperate the spring to use, and the part is in large quantity, and the assembly degree of difficulty is big, and the equipment tolerance is big, easily influences the folding precision with the expansion operation of slewing mechanism, and adopts first sleeve and first axle body to realize providing of damping force, and the part is in small quantity, and the assembly degree of difficulty is low, and the assembly tolerance is little, is favorable to improving slewing mechanism's precision.

In addition, adopt first axis body and the cooperation of first sleeve, can provide sufficient suitable damping force for slewing mechanism under the limited condition of spatial layout in slewing mechanism to guarantee slewing mechanism's the realization of function of hovering, can also adapt to slewing mechanism's miniaturized development trend, the reliability is good. The advantages of the second shaft body and the second sleeve can be referred to the advantages of the first shaft body and the second sleeve, and are not described in detail herein.

In a possible embodiment, the length of the first slit is smaller than or equal to the length of the first sleeve, the length of the first slit is a dimension of the first slit in an axial direction of the first sleeve, and the length of the first sleeve is a dimension of the first sleeve in the axial direction;

the length of the second gap is smaller than or equal to the length of the second sleeve, the length of the second gap is the size of the second gap in the axial direction of the second sleeve, and the length of the second sleeve is the size of the second sleeve in the axial direction.

Therefore, the length of the first gap is equal to or unequal to that of the first sleeve, the length of the second gap is equal to or unequal to that of the second sleeve, the design can be carried out according to practical application scenes, and the flexibility is high.

In a possible embodiment, the first sleeve includes a first end face and a second end face which are oppositely arranged, and the first slit penetrates through the first end face, or the first slit penetrates through the second end face, and the first slit penetrates through the first end face and the second end face, or the first slit does not penetrate through the first end face and the second end face;

the second sleeve comprises a third end face and a fourth end face which are oppositely arranged, the second gap penetrates through the third end face, or the second gap penetrates through the fourth end face, the second gap penetrates through the third end face and the fourth end face, or the second gap does not penetrate through the third end face and the fourth end face.

Under this setting, the position of slotting of first gap can arrange the position everywhere at first sleeve according to actual conditions, and the position everywhere at the second sleeve can be arranged according to actual conditions to the position of slotting of second gap, is favorable to adapting to the application demand under the multi-scene, and the flexibility is strong.

In a possible embodiment, the first synchronous swing arm includes a first bottom surface, an intersection line of the first bottom surface and the outer surface of the first sleeve is a first intersection line, the first slit includes a first side and a second side that are oppositely disposed along a circumferential direction of the first sleeve, a distance between the first side and the first intersection line is the same as or different from a distance between the second side and the first intersection line, a distance between the first side and the first intersection line is a length of the first side and the first intersection line in the circumferential direction of the first sleeve, and a distance between the second side and the first intersection line is a length of the second side and the first intersection line in the circumferential direction of the first sleeve;

the synchronous swing arm of second includes the second bottom surface, the second bottom surface with the intersection line of the telescopic surface of second is the second intersection line, the second gap includes the edge the relative third edge and the fourth edge that sets up of second telescopic circumferential direction, the third edge with distance between the second intersection line with the fourth edge with distance between the second intersection line is the same or inequality, the third edge with distance between the second intersection line does the third edge with the second intersection line is in the length on the telescopic circumferential direction of second, the fourth edge with distance between the second intersection line does the fourth edge with the second intersection line is in the length on the telescopic circumferential direction of second.

In a possible embodiment, the inner surface of the first sleeve is provided with a first spiral groove for accommodating lubricating oil;

and a second spiral groove is formed in the inner surface of the second sleeve and used for containing lubricating oil.

Under this setting, can reduce the friction between first sleeve and the first axle body and second sleeve and the second axle body through lubricating oil, be favorable to slowing down the wearing and tearing that first sleeve, first axle body, second sleeve, second axle body long-term work caused, extension damping component's life.

In a possible implementation manner, the rotating mechanism further includes a synchronizing gear, the synchronizing gear is sleeved on the first shaft body and the second shaft body and is located between the mounting seat and the first sleeve and between the first sleeve and the second sleeve, the first synchronizing swing arm rotates relative to the mounting seat, and the second synchronizing swing arm is driven by the synchronizing gear to rotate relative to the mounting seat.

Therefore, the first synchronous swing arm, the second synchronous swing arm and the synchronous gear can form a gear motion chain of 'first synchronous swing arm-synchronous gear-second synchronous swing arm', and the first synchronous swing arm and the second synchronous swing arm can be opened and closed due to the gear meshing relationship of the synchronous gear, namely the first main swing arm and the second main swing arm are opened and closed, namely the rotating mechanism is opened and closed.

In a possible embodiment, the rotating mechanism further includes a first limiting member, the first limiting member is sleeved on the first shaft body and the second shaft body, and the first limiting member is located between the synchronizing gear and the first sleeve and the second sleeve.

It can be understood that the limiting member is used for limiting the movement of each structure sleeved on the first shaft body in the axial direction of the first shaft body and limiting the movement of each structure sleeved on the second shaft body in the axial direction of the second shaft body, so that the synchronous movement of the first synchronous swing arm and the second synchronous swing arm is not deflected, and the reliability is good.

In a possible embodiment, the rotating mechanism further includes a first main swing arm and a second main swing arm, the first main swing arm is rotatably connected with the mounting base, and the second main swing arm is rotatably connected with the mounting base;

the first main swing arm is provided with a first sliding groove, the first synchronous swing arm comprises a first end, a second end and a third shaft body, the third shaft body is connected to the first end, the third shaft body can slide in the first sliding groove, and the second end is connected with the first sleeve;

be equipped with the second spout on the second main swing arm, the synchronous swing arm of second includes third end, fourth end and fourth axis body, fourth axis body coupling is to the third end, the fourth axis body can slide in the second spout, the fourth end with second bushing connects.

From this, first synchronous swing arm can be connected with first main swing arm through the third axis body, and first synchronous swing arm realizes the linkage through the slip of third axis body in first spout with first main swing arm. The second synchronous swing arm can be connected with the second main swing arm through the fourth shaft body, and the second synchronous swing arm and the second main swing arm realize linkage through the sliding of the fourth shaft body in the second sliding groove.

In a second aspect, the present application further provides an electronic device, which includes a first housing, a second housing, and the rotating mechanism as described above, which is connected between the first housing and the second housing.

Drawings

FIG. 1 is a simplified schematic structural diagram of an electronic device in a folded state according to an embodiment of the present disclosure;

FIG. 2 is a simplified schematic diagram of the electronic device of FIG. 1 in an intermediate state;

FIG. 3 is a simplified schematic structural diagram of the electronic device of FIG. 1 in an expanded state;

fig. 4 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 5 is an exploded view of the electronic device of FIG. 4;

FIG. 6 is a schematic view of a portion of the rotating mechanism shown in FIG. 5;

fig. 7 is an exploded schematic view of a part of the structure of the rotating mechanism shown in fig. 6;

FIG. 8 is a schematic structural view of the main swing arm assembly of the swing mechanism shown in FIG. 6;

FIG. 9 is an exploded schematic view of the main swing arm assembly of the swing mechanism shown in FIG. 8;

FIG. 10 is a schematic structural view of the synchronizing swing arm assembly of the swing mechanism shown in FIG. 6;

FIG. 11 is a cross-sectional view of the rotating mechanism shown in FIG. 6 taken along section line A;

FIG. 12 is a schematic structural view of a damping assembly of the rotating mechanism shown in FIG. 6;

FIG. 13 is a cross-sectional view of the damper assembly shown in FIG. 12 taken along section line B;

FIG. 14 is a schematic view of one configuration of the first and second slots of the damping assembly of the rotating mechanism of FIG. 6;

FIG. 15 is another schematic structural view of the first and second slots of the damping assembly of the rotational mechanism of FIG. 6;

FIG. 16 is a schematic view of yet another configuration of the first and second slots of the damping assembly of the rotational mechanism of FIG. 6;

FIG. 17 is a schematic view of yet another configuration of the first and second slots of the damping assembly of the rotational mechanism of FIG. 6;

FIG. 18 is an angled structural schematic of a portion of the structure of the damping assembly shown in FIG. 12;

FIG. 19 is a schematic view of a synchronizing gear of the rotating mechanism shown in FIG. 6;

FIG. 20 is a schematic view of a spacing assembly of the rotation mechanism of FIG. 6;

fig. 21 is a schematic structural view of a floating support plate assembly of the rotating mechanism shown in fig. 6.

Detailed Description

For convenience of understanding, terms referred to in the embodiments of the present application are first explained.

Axial direction of the first sleeve: it is understood that the direction in which the central axis of the first sleeve is located is equivalent to the direction of extension of the first sleeve.

Circumferential direction of the first sleeve: which may be understood as a circumferential direction around the central axis of the first sleeve.

Radial direction of the first sleeve: a direction perpendicular to the axial direction of the first sleeve.

Axial direction of the second sleeve: it is understood that the direction in which the central axis of the second sleeve is located is equivalent to the direction in which the second sleeve extends.

Circumferential direction of the second sleeve: which may be understood as a circumferential direction around the central axis of the second sleeve.

Radial direction of the second sleeve: a direction perpendicular to the axial direction of the second sleeve.

A plurality of: two or more than two.

Connecting: it should be understood that, for example, A and B are connected, either directly or indirectly through an intermediate.

The following description of the embodiments of the present application will be made with reference to the accompanying drawings.

The embodiment of the application provides a rotating mechanism and electronic equipment applying the same.

The electronic device may be any device with foldable performance, which can be unfolded and closed under the operation of a user. Electronic devices include, but are not limited to, cell phones (cellphones), notebook computers (notebook computers), tablet personal computers (tablets), laptop computers (laptop computers), personal digital assistants (personal digital assistants), wearable devices (wearable devices), or vehicle mounted devices (mobile devices). In the embodiment of the present application, an electronic device is taken as an example for explanation.

Fig. 1 is a schematic structural diagram of an electronic device 400 provided in an embodiment of the present application in a folded state, fig. 2 is a schematic structural diagram of the electronic device 400 shown in fig. 1 in an intermediate state, and fig. 3 is a schematic structural diagram of the electronic device 400 shown in fig. 1 in an unfolded state. The unfolding angle α of the electronic device 400 shown in fig. 2 is 120 °, and the unfolding angle β of the electronic device 400 shown in fig. 3 is 180 °.

It should be noted that the angles illustrated in the embodiments of the present application are all allowed to have a slight deviation. For example, the unfolding angle α of the electronic device 400 shown in fig. 2 is 120 °, which means that α may be 120 °, or about 120 °, such as 110 °, 115 °, 125 °, or 130 °. The spreading angle β of the electronic device 400 shown in fig. 3 is 180 °, which means that β may be 180 °, or about 180 °, such as 0 °, 5 °, 185 °, and 190 °. The angles illustrated hereinafter are to be understood in the same way.

The electronic device 400 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the electronic device 400 may also be an electronic device that can be folded multiple times (more than two times). At this time, the electronic device 400 may include a plurality of portions, and adjacent two portions may be folded relatively close to each other until the electronic device 400 is in a folded state, and adjacent two portions may be unfolded relatively far from each other until the electronic device 400 is in an unfolded state.

Fig. 4 is a schematic structural diagram of an electronic device 400 according to an embodiment of the present application, and fig. 5 is an exploded schematic diagram of the electronic device 400 shown in fig. 4.

Referring to fig. 4 and 5, the electronic device 400 includes a folding device 200 and a flexible display 300, wherein the flexible display 300 is mounted on the folding device 200. The flexible display 300 comprises a first portion 310, a second portion 320 and a foldable portion 330. The foldable portion 330 is located between the first portion 310 and the second portion 320, and the foldable portion 330 may be bent. The first portion 310, the second portion 320 and the foldable portion 330 together form the flexible display 300.

In an embodiment of the present application, the flexible display panel 300 may be an organic light-emitting diode (OLED) display panel, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini-OLED (mini-organic light-emitting diode) display panel, a micro-led (micro-organic light-emitting diode) display panel, a quantum dot light-emitting diode (QLED) display panel.

The folding device 200 includes a first housing 210, a second housing 220 and a rotating mechanism 100, wherein the first housing 210 has a first receiving groove 230, the second housing 220 has a second receiving groove 240, and the first receiving groove 230 and the second receiving groove 240 are communicated to form a receiving groove. The rotating mechanism 100 is installed in the accommodating groove and is fixedly connected with the first casing 210 and the second casing 220, so as to realize the rotating connection between the first casing 210 and the second casing 220. The first housing 210 and the second housing 220 can be relatively rotated by the rotating mechanism 100, so that the folding device 200 is switched between the folded state and the unfolded state. The first housing 210 and the second housing 220 are further provided with an accommodating space (not shown) for accommodating electronic components and structural elements of the electronic device 400, such as a processor, a circuit board, a camera module, and the like.

As shown in fig. 1, the relative rotation of the first housing 210 and the second housing 220 enables the folding apparatus 200 to be in a folded state, which means that the first housing 210 and the second housing 220 are rotated by the rotating mechanism 100 and are close to each other, and the surfaces of the first housing 210 and the second housing 220, which bear the flexible display screen 300, are opposite to each other. In practice, in the application process, when the folding device 200 is in the fully folded state, the flexible display 300 mounted on the first housing 210 and the second housing 220 is folded, and the first portion 310 and the second portion 320 are stacked and partially contacted, or completely contacted.

As shown in fig. 2, the relative rotation of the first housing 210 and the second housing 220 to make the folding device 200 in the intermediate state means that the first housing 210 and the second housing 220 rotate through the rotating mechanism 100 and move away from each other to make the included angle between the first housing 210 and the second housing 220 larger and smaller, or that the first housing 210 and the second housing 220 rotate through the rotating mechanism 100 and move close to each other to make the included angle between the first housing 210 and the second housing 220 smaller and smaller.

As shown in fig. 3, the relative rotation of the first housing 210 and the second housing 220 to make the folding device 200 in the unfolded state means that the first housing 210 and the second housing 220 are rotated by the rotating mechanism 100 and are away from each other, and the included angle between the first housing 210 and the second housing 220 is continuously increased and may be close to 180 ° or equal to 180 °.

The flexible display 300 is attached to the folding device 200. Specifically, the first housing 210 carries a first portion 310 of the flexible display 300, the second housing 220 carries a second portion 320 of the flexible display 300, and the foldable portion 330 of the flexible display 300 is disposed opposite to the rotation mechanism 100. It can be understood that the first housing 210 and the second housing 220 are rotated relatively by the rotating mechanism 100, and the flexible display 300 is folded by the relative approach of the first housing 210 and the second housing 220, so that the electronic device 400 is folded. When the electronic device 400 is in a folded state, the foldable portion 330 of the flexible display 300 is bent, and the first portion 310 and the second portion 320 are disposed opposite to each other. At this time, the flexible display screen 300 is located between the first casing 210 and the second casing 220, so that the probability that the flexible display screen 300 is damaged can be greatly reduced, and the flexible display screen 300 is effectively protected.

In the embodiment of the present application, the first housing 210 and the second housing 220 rotate relatively through the rotating mechanism 100, and the flexible display 300 is unfolded by relatively moving the first housing 210 and the second housing 220 away from each other, so that the electronic device 400 is unfolded to the intermediate state. When the electronic device 400 is in the intermediate state, the first housing 210 and the second housing 220 are unfolded to form an included angle α, and the first portion 310 and the second portion 320 are unfolded relatively to each other and drive the foldable portion 330 to unfold. At this time, the angle between the first portion 310 and the second portion 320 is α. In this example, α is 120 °. In other embodiments, α may also be about 120 °, 110 °, 115 °, 125 °, 130 °, or the like.

The first housing 210 and the second housing 220 rotate relatively through the rotating mechanism 100, and the flexible display screen 300 is further unfolded by the relative distance between the first housing 210 and the second housing 220 until the electronic device 400 is unfolded. When the folding device 200 is in the unfolded state, the angle between the first housing 210 and the second housing 220 is β. The foldable portion 330 is unfolded and the first portion 310 and the second portion 320 are relatively unfolded. At this time, included angles between the first portion 310, the second portion 320 and the foldable portion 330 are all β, and the flexible display screen 300 has a large-area display area, so that large-screen display of the electronic device 400 is realized, and use experience of a user is improved. In this example, β is 180 °. In other embodiments, β may also be approximately 180 °, may be 0 °, 5 °, 185 °, 190 °, and so forth.

It is understood that when the electronic device 400 is in the unfolded state, the rotating mechanism 100 is also in the unfolded state. When the electronic apparatus 400 is in the folded state, the rotating mechanism 100 is also in the folded state. When the electronic apparatus 400 is in the intermediate state, the rotation mechanism 100 is also in the intermediate state.

Fig. 6 is a schematic view of a partial structure of the rotating mechanism 100 shown in fig. 5, and fig. 7 is an exploded schematic view of the partial structure of the rotating mechanism 100 shown in fig. 6.

Referring to fig. 6 and 7 in combination, the rotating mechanism 100 may include a base 10, a main swing arm assembly 20, a synchronizing swing arm assembly 30, a damping assembly 40, a synchronizing gear 50, a limiting assembly 60, and a floating support plate assembly 70. Wherein, as shown in fig. 6, the main swing arm assembly 20 and the synchronous swing arm assembly 30 are arranged in order in the extending direction of the base 10.

The base 10 has a receiving space 11 therein, and the receiving space 11 can be used for receiving at least part of the components of the rotating mechanism 100 and other structures in the electronic device 400. The base 10 is capable of maintaining a stationary state during the folding and unfolding of the rotating mechanism 100. In other words, the base 10 can maintain its position unchanged during the folding and unfolding of the rotating mechanism 100, i.e., the base 10 is relatively stationary.

In the embodiment of the present application, the main swing arm assembly 20 can control the swing posture of the rotating mechanism 100, so as to support the flexible display screen 300 and improve the strength of the whole rotating mechanism 100. The main swing arm assembly 20 can realize the rotation connection of the first housing 210 and the base 10, and the main swing arm assembly 20 can realize the rotation connection of the second housing 220 and the base 10.

Fig. 8 is a schematic structural view of the main swing arm assembly 20 of the swing mechanism 100 shown in fig. 6, and fig. 9 is an exploded schematic view of the main swing arm assembly 20 of the swing mechanism 100 shown in fig. 8.

Referring to fig. 8 and 9, the main swing arm assembly 20 includes a mounting base 21, a first main swing arm 22 and a second main swing arm 23. The first main swing arm 22 and the second main swing arm 23 are respectively located at two sides of the mounting base 21. The first main swing arm 22 is rotatably connected to the base 10, and the first main swing arm 22 is fixedly connected to the first housing 210. The second main swing arm 23 is rotatably connected to the base 10, and the second main swing arm 23 is fixedly connected to the second housing 220.

The mount 21 is fixed to the base 10, and thus, in the following description, rotation of each component relative to the base 10 may be equivalent to rotation relative to the mount 21. The mount 21 has a first groove 211 and a second groove 212. First slot 211 can provide a space for the rotation of first swing arm 22 relative to mount 21, and second slot 212 can provide a space for the rotation of second swing arm 23 relative to mount 21. The first groove 211 and the second groove 212 are arranged at intervals, an opening into which the first main swing arm 22 can extend in the first groove 211 is located on one side of the mounting base 21, an opening into which the second main swing arm 23 can extend in the second groove 212 is located on the other side of the mounting base 21, and the extending direction of the first groove 211 is opposite to the extending direction of the second groove 212. The mount base 21 is provided with a first arc-shaped arm 213 and a second arc-shaped arm 214, the first arc-shaped arm 213 is located in the first groove 211, and the first arc-shaped arm 213 can be connected with a corresponding structure on the first main swing arm 22 to realize the rotational connection between the mount base 21 and the first main swing arm 22. Second arcuate arm 214 is positioned within second slot 212, and second arcuate arm 214 is connectable with a corresponding structure on second main swing arm 23 to effect a rotational connection of mount 21 with second main swing arm 23.

Illustratively, the number of the first arc-shaped arms 213 is two, and the two first arc-shaped arms 213 are respectively located on two oppositely-arranged inner walls of the first slot 211. The number of the second arc-shaped arms 214 is two, and the two second arc-shaped arms 214 are respectively located on two oppositely-arranged inner walls of the second groove 212.

First main swing arm 22 is connected with mount 21 rotates, first main swing arm 22 and first casing 210 fixed connection, and first main swing arm 22 can be through the rotation of first casing 210 relative base 10, and is driven relative base 10 and rotates. Specifically, the first main swing arm 22 includes a first main body 221 and a first rotating structure 222 provided to the first main body 221.

The first body 221 is fixedly connected to the first casing 210, so that the first main swing arm 22 and the first casing 210 are linked, that is, when the first casing 210 rotates relative to the base 10, the first main swing arm 22 also rotates relative to the base 10. The first body 221 is provided with a first sliding groove 223, and the first sliding groove 223 can allow the third shaft body 313 of the first synchronization swing arm 31 to perform sliding motion therein.

The first rotating structure 222 is provided with a first arc-shaped groove 224, the first arc-shaped groove 224 can allow the first arc-shaped arm 213 of the mounting base 21 to slide therein, and the first main swing arm 22 and the mounting base 21 can rotate by the sliding motion of the first arc-shaped arm 213 in the first arc-shaped groove 224, that is, the first main swing arm 22 and the base 10 can rotate. Illustratively, the number of the first arc-shaped slots 224 is two, two first arc-shaped slots 224 are respectively located at two sides of the first rotating structure 222, and each first arc-shaped slot 224 can allow one first arc-shaped arm 213 to slide therein.

Second swing arm 23 rotates with mount pad 21 and is connected, and second swing arm 23 and second casing 220 fixed connection, second swing arm 23 can be through the relative base 10's of second casing 220 rotation, and driven relative base 10 rotation. Specifically, the second main swing arm 23 includes a second body 231 and a second rotating structure 232 provided to the second body 231.

The second body 231 is fixedly connected to the second housing 220, so that the second main swing arm 23 and the second housing 220 are linked, that is, when the second housing 220 rotates relative to the base 10, the second main swing arm 23 also rotates relative to the base 10. The second main body 231 is provided with a second sliding groove 233, and the second sliding groove 233 allows the fourth shaft body 323 of the second synchronizing swing arm 32 to slide therein.

The second rotating structure 232 is provided with a second arc-shaped groove 234, the second arc-shaped groove 234 can allow the second arc-shaped arm 214 of the mounting base 21 to slide in the second arc-shaped groove 234, and the second swing main arm 23 and the mounting base 21 can rotate through the sliding motion of the second arc-shaped arm 214 in the second arc-shaped groove 234, that is, the second swing main arm 23 and the base 10 can rotate. Illustratively, the number of the second arc-shaped slots 234 is two, two second arc-shaped slots 234 are respectively located at two sides of the second rotating structure 232, and each second arc-shaped slot 234 can be used for sliding one second arc-shaped arm 214 therein.

Based on the above description, it should be understood that the first housing 210 can rotate relative to the base 10 and bring the first main swing arm 22 to rotate relative to the base 10, so as to form a rotation chain of "first housing 210-first main swing arm 22-base 10". The second shell 220 can rotate relative to the base 10, and the second main swing arm 23 is driven to rotate relative to the base 10, so as to form a rotation chain of "second shell 220-second main swing arm 23-base 10". Thereby enabling the rotating mechanism 100 to smoothly perform the rotating motion.

In the embodiment of the present application, the synchronizing swing arm assembly 30 can achieve the rotation angle synchronization of the first housing 210 and the second housing 220.

Fig. 10 is a structural schematic view of the synchronous swing arm assembly 30 of the swing mechanism 100 shown in fig. 6, and fig. 11 is a sectional schematic view of the swing mechanism 100 shown in fig. 6 cut along a sectional line a.

Referring to fig. 10 and 11 in combination, the synchronizing swing arm assembly 30 includes a first synchronizing swing arm 31 and a second synchronizing swing arm 32. The first and second synchronizing swing arms 31 and 32 are respectively located at both sides of the base 10. The first synchronization swing arm 31 is rotatably connected to the base 10, and the first synchronization swing arm 31 is rotatably and slidably connected to the first main swing arm 22. The second synchronous swing arm 32 is rotatably connected with the base 10, and the second synchronous swing arm 32 is rotatably and slidably connected with the second main swing arm 23.

The first synchronous swing arm 31 includes a first end 311, a second end 312, and a third shaft body 313. The first end 311 of the first synchronization swing arm 31 is the end of the first synchronization swing arm 31 connected to the first main swing arm 22, and the second end 312 of the first synchronization swing arm 31 is the end of the first synchronization swing arm 31 connected to the damping assembly 40. The first end 311 of the first synchronization swing arm 31 is rotatably and slidably connected to the first main swing arm 22, and the second end 312 of the first synchronization swing arm 31 is rotatably connected to the base 10.

As shown in fig. 11, the third shaft body 313 is fixed to the first end 311 of the first synchronization swing arm 31, and one end of the third shaft body 313 protrudes out of the first end 311 of the first synchronization swing arm 31. The end of the third shaft body 313 protruding out of the first end 311 may be connected to the first sliding groove 223, and the third shaft body 313 may be slidable in the first sliding groove 223. Thus, the first synchronization swing arm 31 can be connected to the first main swing arm 22 via the third shaft body 313, and the first synchronization swing arm 31 and the first main swing arm 22 are linked by sliding of the third shaft body 313 in the first slide groove 223. That is, when the first synchronization swing arm 31 performs a rotational motion relative to the base 10, the first main swing arm 22 is driven to perform a rotational motion relative to the base 10. Alternatively, when the first main swing arm 22 performs a rotational motion relative to the base 10, the first synchronization swing arm 31 is driven to perform a rotational motion relative to the base 10.

When the first main swing arm 22 rotates relative to the base 10, the first synchronization swing arm 31 can rotate relative to the base 10 and slide relative to the first main swing arm 22. And the first main swing arm 22 is rotatably connected with the base 10 and fixedly connected with the first housing 210, thereby forming a link structure. The first synchronous swing arm 31 is rotatably connected with the base 10 and slidably connected with the first main swing arm 22, thereby forming a link slider structure. From this, can realize being connected between first casing 210 and the base 10 through connecting rod structure and connecting rod slider structure, under this framework, slewing mechanism 100 has less part quantity, and cooperation relation and cooperation position are simple, and the easy preparation of component parts and equipment are favorable to realizing the volume production.

The second synchronization swing arm 32 comprises a third end 321, a fourth end 322 and a fourth shaft 323. The third end 321 of the second synchronous swing arm 32 is the end of the second synchronous swing arm 32 connected to the second main swing arm 23, and the fourth end 322 of the second synchronous swing arm 32 is the end of the second synchronous swing arm 32 connected to the damping assembly 40. The third end 321 of the second synchronous swing arm 32 is connected to the second main swing arm 23 in a rotating and sliding manner, and the fourth end 322 of the second synchronous swing arm 32 is connected to the base 10 in a rotating manner.

As shown in fig. 11, the fourth shaft body 323 is fixed to the third end 321 of the second synchronizing swing arm 32, and one end of the fourth shaft body 323 protrudes out of the third end 321 of the second synchronizing swing arm 32. The end of the fourth shaft 323 extending out of the third end 321 may be connected to the second sliding groove 233, and the fourth shaft 323 can slide in the second sliding groove 233. Therefore, the second synchronizing swing arm 32 can be connected to the second main swing arm 23 through the fourth shaft body 323, and the second synchronizing swing arm 32 and the second main swing arm 23 are interlocked by the sliding of the fourth shaft body 323 in the second chute 233. That is, when the second synchronous swing arm 32 performs a rotational motion relative to the base 10, the second main swing arm 23 is driven to perform a rotational motion relative to the base 10. Alternatively, when the second main swing arm 23 performs a rotational motion relative to the base 10, the second synchronous swing arm 32 is driven to perform a rotational motion relative to the base 10.

When the second main swing arm 23 rotates relative to the base 10, the second synchronizing swing arm 32 can rotate relative to the base 10 and slide relative to the second main swing arm 23. And the second main swing arm 23 is rotatably connected with the base 10 and fixedly connected with the second housing 220, thereby forming a link structure. The second synchronous swing arm 32 is rotatably connected with the base 10 and slidably connected with the second main swing arm 23, thereby forming a link slider structure. Therefore, the connection between the second housing 220 and the base 10 can be realized through the connecting rod structure and the connecting rod slider structure, the rotating mechanism 100 has a small number of parts under the framework, the matching relation and the matching position are simple, the components are easy to manufacture and assemble, and the mass production is facilitated.

In embodiments of the present application, the damping assembly 40 enables damping, any angle hovering of the rotating mechanism 100, and any angle hovering of the electronic device 400 to which the rotating mechanism 100 is applied. Specifically, the damping assembly 40 can stop and maintain the first synchronous swing arm 31 and the second synchronous swing arm 32 at a certain angle after rotating to the certain angle, and further can assist in fixing and maintaining the angles of the first main swing arm 22 and the second main swing arm 23. In other words, the damping assembly 40 can achieve a slow descending effect when the two housings (the first housing 210 and the second housing 220) are turned over, that is, the electronic device 400 can be positioned at any angle according to the use requirement during the folding or unfolding process.

The damping assembly 40 has a first resistance state and a second resistance state. When the damping assembly 40 is in the first resistance state, the first synchronizing swing arm 31 and the second synchronizing swing arm 32 can rotate freely relatively. When the damping assembly 40 is in the second resistance state, the first synchronization swing arm 31 and the second synchronization swing arm 32 can relatively rotate to a certain angle and stay at the certain angle, that is, the hovering function of the rotating mechanism 100 is realized. The rotation resistance of the damping assembly 40 to the first and second synchronous swing arms 31 and 32 in the second resistance state is greater than the rotation resistance of the damping assembly 40 to the first and second synchronous swing arms 31 and 32 in the first resistance state.

Fig. 12 is a schematic structural view of the damper assembly 40 of the rotating mechanism 100 shown in fig. 6, and fig. 13 is a schematic sectional view of the damper assembly 40 shown in fig. 12 cut along a sectional line B.

Referring to fig. 12 and 13, the damping assembly 40 includes a first shaft 41, a second shaft 42, a first sleeve 43, and a second sleeve 44. The first shaft 41 and the second shaft 42 are located in the receiving space 11 of the base 10 and distributed on two sides of the receiving space 11.

The first shaft body 41 has a first axis 411. The first shaft 41 is inserted into the first sleeve 43. The two ends of the first shaft body 41 extend out of the first sleeve 43, one end of the first shaft body 41 extending out of the first sleeve 43 is fixedly connected with the mounting seat 21, and the other end of the first shaft body 41 is connected with the limiting component 60.

The first sleeve 43 includes a first inner surface 431 (i.e., an inner surface of the first sleeve 43), a first outer surface 432 (i.e., an outer surface of the first sleeve 43), a first end surface 433, and a second end surface 434. First end surface 433 and second end surface 434 are oppositely disposed. First inner surface 431 is connected between first end surface 433 and second end surface 434, and first outer surface 432 is connected between first end surface 433 and second end surface 434. The first inner surface 431 can enclose an inner diameter dimension of the first sleeve 43, the first outer surface 432 can enclose an outer diameter dimension of the first sleeve 43, the first outer surface 432 can be convexly provided with a first contact portion 435, the first contact portion 435 can be in contact with the floating support plate assembly 70, and the first contact portion 435 can support the floating support plate assembly 70 in a flattened state of the rotating mechanism 100. The first inner surface 431 is a surface that can contact the first shaft body 41, and the first end surface 433, the second end surface 434, and the first outer surface 432 together constitute an appearance surface of the first sleeve 43.

The first sleeve 43 is a hollow structure, and the first sleeve 43 is fixed to the second end 312 of the first synchronous swing arm 31, so that the first sleeve 43 and the first synchronous swing arm 31 are linked, that is, when the first sleeve 43 rotates relative to the base 10, the first synchronous swing arm 31 also rotates relative to the base 10. When the first synchronization swing arm 31 rotates relative to the base 10, the first bushing 43 also rotates relative to the base 10.

The first sleeve 43 is sleeved on the first shaft 41, and the first sleeve 43 and the first shaft 41 are in interference fit. That is, the inner diameter dimension of the first sleeve 43 is smaller than the outer diameter dimension of the first shaft body 41. With this arrangement, a structure arrangement of "small hole and thick shaft" in which the hole of the first sleeve 43 is small and the shaft of the first shaft 41 is thick can be formed, so that a better tightening force is provided between the first sleeve 43 and the first shaft 41, and the first sleeve 43 and the first shaft 41 are tightly fitted.

The first sleeve 43 can rotate relative to the first shaft body 41 and drives the first synchronous swing arm 31 to rotate relative to the first shaft body 41. Specifically, the first sleeve 43 is capable of rotational movement about the first axis 411, that is, the first synchronization swing arm 31 is capable of rotational movement about the first axis 411.

The first sleeve 43 may have a first slit 436, and the first slit 436 includes a first side 437 and a second side 438 which are oppositely disposed in the circumferential direction of the first sleeve 43. A first slit 436 extends through the first inner surface 431 and the first outer surface 432 of the first sleeve 43 in the radial direction of the first sleeve 43, the first slit 436 extending in the axial direction of the first sleeve 43. Of course, in other embodiments, the first sleeve 43 may not have the first slit 436, and only the first sleeve 43 can move relative to the first shaft 41, which is not limited to this.

Based on the above description, the first shaft body 41 and the first sleeve 43 can have a relative movement tendency, that is, the first shaft body 41 and the first sleeve 43 can rotate relatively. Accordingly, the first sleeve 43 has an expansion tendency by the interference fit between the first shaft body 41 and the first sleeve 43, that is, the first shaft body 41 presses the first sleeve 43, and further generates resistance to the rotation of the first synchronous swing arm 31, thereby generating a damping force. In other words, the damping force of the damping assembly 40 can be provided by the pressing force between the first sleeve 43 and the first shaft body 41. On the one hand, because the stability of damping force is influenced by the quality of the contact surface greatly, and the contact surface area between the first sleeve 43 and the first shaft body 41 is large, the processing difficulty of the contact surface is low, the quality of the contact surface is high, and the interference magnitude between the first sleeve 43 and the first shaft body 41 is stable, so the stability of damping force provided by the cooperation of the first shaft body 41 and the first sleeve 43 is strong, and the torsion fluctuation of the rotating mechanism 100 in the folding and unfolding processes can be reduced. On the other hand, the concave-convex wheel type damping in the prior art needs to be matched with a spring for use, the number of parts is large, the assembly difficulty is large, the assembly tolerance is large, the folding and unfolding operation precision of the rotating mechanism 100 is easily influenced, the first sleeve 43 and the first shaft body 41 are adopted to provide the damping force, the number of parts is small, the assembly difficulty is low, the assembly tolerance is small, and the improvement of the precision of the rotating mechanism 100 is facilitated.

In addition, the first shaft 41 and the first sleeve 43 are adopted to cooperate, so that sufficient and appropriate damping force can be provided for the rotating mechanism 100 under the condition that the space layout in the rotating mechanism 100 is limited, the hovering function of the rotating mechanism 100 can be guaranteed, the rotating mechanism can adapt to the development trend of miniaturization of the rotating mechanism 100, and the reliability is good.

In one possible embodiment, the length of the first gap 436 is smaller than the length of the first sleeve 43, the length of the first gap 436 is the dimension of the first gap 436 in the axial direction of the first sleeve 43, and the length of the first sleeve 43 is the dimension of the first sleeve 43 in the axial direction. With this arrangement, the length of the first slit 436 is not equal to the length of the first sleeve 43.

Fig. 14 is a schematic structural view of the first slit 436 and the second slit 446 of the damping assembly 40 of the rotating mechanism 100 shown in fig. 6, fig. 15 is another schematic structural view of the first slit 436 and the second slit 446 of the damping assembly 40 of the rotating mechanism 100 shown in fig. 6, and fig. 16 is still another schematic structural view of the first slit 436 and the second slit 446 of the damping assembly 40 of the rotating mechanism 100 shown in fig. 6.

For example, as shown in fig. 14, the first gap 436 may penetrate the first end surface 433 and not penetrate the second end surface 434. Alternatively, as shown in fig. 15, the first slit 436 may penetrate the second end surface 434 and not penetrate the first end surface 433. Alternatively, as shown in fig. 16, the first gap 436 may not extend through the first and second end surfaces 433 and 434.

In another possible embodiment, the length of the first slit 436 is equal to the length of the first sleeve 43, the length of the first slit 436 is the dimension of the first slit 436 in the axial direction of the first sleeve 43, and the length of the first sleeve 43 is the dimension of the first sleeve 43 in the axial direction. With this arrangement, the length of the first slit 436 is equal to the length of the first sleeve 43.

Fig. 17 is a schematic view of another structure of the first slit 436 and the second slit 446 of the damping assembly 40 of the rotating mechanism 100 shown in fig. 6.

For example, as shown in fig. 17, a first slit 436 may extend through the first end surface 433 and the second end surface 434.

Figure 18 is an angled structural schematic of a portion of the structure of the damper assembly 40 shown in figure 12.

Referring to fig. 18, a surface of the first synchronous swing arm 31 facing the base 10 is a first bottom surface 314, and an intersection line of the first bottom surface 314 and the first outer surface 432 of the first sleeve 43 is a first intersection line C1. It is defined that a distance between the first intersection line C1 and the first side 437 of the first slit 436 is a first distance, and a distance between the first intersection line C1 and the second side 438 of the first slit 436 is a second distance. Here, the distance between the first edge 437 and the first intersection line C1 is the length of the first edge 437 and the first intersection line C1 in the circumferential direction of the first sleeve 43, and the distance between the second edge 438 and the first intersection line C1 is the length of the second edge 438 and the first intersection line C1 in the circumferential direction of the first sleeve 43.

The first distance and the second distance may be the same, or the first distance and the second distance may not be the same.

Under the setting, the slit position of the first slit 436 can be arranged at each position of the first sleeve 43 according to the actual situation, which is beneficial to adapting to the application requirements under multiple scenes and has strong flexibility. It should be noted that when the first slit 436 is at the position shown in fig. 18, the torsion applied to the first synchronization swing arm 31 is reduced when the first synchronization swing arm 31 rotates clockwise relative to the base 10. When the first synchronous swinging arm 31 rotates counterclockwise relative to the base 10, the torque applied to the first synchronous swinging arm 31 increases. Wherein the clockwise rotation of the first synchronization swing arm 31 with respect to the base 10 corresponds to the folding operation of the rotating mechanism 100, and the counterclockwise rotation of the first synchronization swing arm 31 with respect to the base 10 corresponds to the unfolding operation of the rotating mechanism 100.

Based on the above description, it should be noted that shape characteristics such as the length, the width, the size of the slit, the slit angle of the first slit 436, the inner diameter of the first sleeve 43, the thickness of the first sleeve 43, and the like are strongly related to the torque magnitude of the first synchronization swing arm 31, and can be adjusted according to the practical application scenario of the rotating mechanism 100, which is not strictly limited in the embodiment of the present application. Illustratively, the smaller the width of the first slit 436, the larger the torsion force of the first synchronizing swing arm 31, and the width of the first slit 436 is the dimension of the first slit 436 in the circumferential direction of the first sleeve 43. The larger the interference between the first sleeve 43 and the third shaft body 313 is, the larger the torsion of the first synchronous swing arm 31 is. The thicker the wall thickness of the first sleeve 43 is, the larger the torsion force of the first synchronization swing arm 31 is, and the wall thickness of the first sleeve 43 is a dimension in the radial direction of the first sleeve 43. The higher the modulus of the material selected for the first sleeve 43, the higher the torsion of the first synchronization swing arm 31.

In a possible embodiment, the first inner surface 431 of the first sleeve 43 is provided with first helical grooves spirally distributed on the first inner surface 431 of the first sleeve 43, the first helical grooves being adapted to receive lubricating oil. The number of the first spiral grooves may be one or more, and when the number of the first spiral grooves is plural, the plural first spiral grooves may be spaced apart. With this arrangement, the friction between the first sleeve 43 and the first shaft 41 can be reduced by the lubricant, which is beneficial to reduce the wear of the first sleeve 43 and the first shaft 41 caused by long-term operation, and prolong the service life of the damping assembly 40.

Referring to fig. 12 and 13 again, the second shaft 42 has a second axis 421. The second shaft 42 is inserted into the second sleeve 44. The second sleeve 44 extends from both ends of the second shaft body 42, one end of the second shaft body 42 extending out of the second sleeve 44 is fixedly connected with the mounting seat 21, and the other end of the second shaft body 42 is connected with the limiting component 60.

The second sleeve 44 includes a second inner surface 441 (i.e., an inner surface of the second sleeve 44), a second outer surface 442 (i.e., an outer surface of the second sleeve 44), a third end surface 443, and a fourth end surface 444. The third 443 and fourth 444 end surfaces are oppositely disposed. The second inner surface 441 is connected between the third end surface 443 and the fourth end surface 444, and the second outer surface 442 is connected between the third end surface 443 and the fourth end surface 444. The second inner surface 441 can be encircled by an inner diameter dimension of the second sleeve 44, the second outer surface 442 can be encircled by an outer diameter dimension of the second sleeve 44, the second outer surface 442 can be protruded with a second contact portion 445, the second contact portion 445 can be in contact with the floating support plate assembly 70, and the second contact portion 445 can support the floating support plate assembly 70 in a flattened state of the rotating mechanism 100. The second inner surface 441 is a surface capable of contacting the second shaft body 42, and the third end surface 443, the fourth end surface 444, and the second outer surface 442 together constitute an appearance surface of the second sleeve 44.

The second sleeve 44 is hollow, and the second sleeve 44 is fixed to the fourth end 322 of the second synchronous swing arm 32, so that the second sleeve 44 and the second synchronous swing arm 32 are linked, that is, when the second sleeve 44 rotates relative to the base 10, the second synchronous swing arm 32 also rotates relative to the base 10. When the second synchronizing swing arm 32 rotates relative to the base 10, the second sleeve 44 also rotates relative to the base 10.

The second sleeve 44 is sleeved on the second shaft body 42, and the second sleeve 44 and the second shaft body 42 are in interference fit. That is, the second sleeve 44 has an inner diameter dimension that is smaller than an outer diameter dimension of the second shaft body 42. With this arrangement, a structure arrangement of "small hole and thick shaft" in which the hole of the second sleeve 44 is small and the shaft of the second shaft 42 is thick can be formed, so that a better tightening force is provided between the second sleeve 44 and the second shaft 42, and the second sleeve 44 and the second shaft 42 are tightly fitted.

The second sleeve 44 can rotate relative to the second shaft 42 and drive the second synchronous swing arm 32 to rotate relative to the second shaft 42. In particular, the second sleeve 44 is able to perform a rotational movement around the second axis 421, i.e. the second synchronization swing arm 32 is able to perform a rotational movement around the second axis 421.

The second sleeve 44 may have a second slit 446, the second slit 446 including third and fourth edges 447, 448 arranged opposite in a circumferential direction of the second sleeve 44. A second slit 446 extends through the second inner surface 441 and the second outer surface 442 of the second sleeve 44 in the radial direction of the second sleeve 44, the second slit 446 extending in the axial direction of the second sleeve 44. Of course, in other embodiments, the second sleeve 44 may not have the second slit 446, and only the second sleeve 44 is required to be able to move relative to the second shaft 42, which is not limited strictly.

Based on the above description, the second shaft body 42 and the second sleeve 44 can have a relative movement tendency, that is, the second shaft body 42 and the second sleeve 44 can rotate relatively. Therefore, the second sleeve 44 can have an expansion tendency by the interference fit of the second shaft body 42 and the second sleeve 44, that is, the second shaft body 42 extrudes the second sleeve 44, and then resistance is generated to the rotation of the second synchronous swing arm 32, so as to form a damping force. In other words, the damping force of the damping assembly 40 can be provided by the pressing force between the second sleeve 44 and the second shaft body 42. On one hand, because the stability of the damping force is greatly influenced by the quality of the contact surface, the area of the contact surface between the second sleeve 44 and the second shaft body 42 is large, the processing difficulty of the contact surface is low, the quality of the contact surface is high, and the interference magnitude between the second sleeve 44 and the second shaft body 42 is stable, the stability of the damping force provided by the matching of the second shaft body 42 and the second sleeve 44 is strong, and the torsion fluctuation in the folding and unfolding processes of the rotating mechanism 100 can be reduced. On the other hand, the concave-convex wheel type damping in the prior art needs to be matched with a spring for use, the number of parts is large, the assembly difficulty is large, the assembly tolerance is large, the folding and unfolding operation precision of the rotating mechanism 100 is easily influenced, the second sleeve 44 and the second shaft body 42 are adopted for providing the damping force, the number of parts is small, the assembly difficulty is low, the assembly tolerance is small, and the improvement of the precision of the rotating mechanism 100 is facilitated.

In addition, the second shaft 42 and the second sleeve 44 are adopted to cooperate, so that sufficient and appropriate damping force can be provided for the rotating mechanism 100 under the condition that the space layout in the rotating mechanism 100 is limited, the hovering function of the rotating mechanism 100 can be guaranteed, the rotating mechanism 100 can adapt to the development trend of miniaturization, and the reliability is good.

In one possible embodiment, the length of the second gap 446 is smaller than the length of the second sleeve 44, the length of the second gap 446 is the dimension of the second gap 446 in the axial direction of the second sleeve 44, and the length of the second sleeve 44 is the dimension of the second sleeve 44 in the axial direction. With this arrangement, the length of the second slot 446 is not equal to the length of the second sleeve 44.

For example, as shown in fig. 14, the second slit 446 may extend through the fourth end surface 444 and not through the fourth end surface 444. Alternatively, as shown in fig. 15, the second slit 446 may extend through the fourth end surface 444 and not through the fourth end surface 444. Alternatively, as shown in fig. 16, the second slit 446 may not extend through the fourth end surfaces 444 and 444.

In another possible embodiment, the length of the second gap 446 is equal to the length of the second sleeve 44, the length of the second gap 446 is the dimension of the second gap 446 in the axial direction of the second sleeve 44, and the length of the second sleeve 44 is the dimension of the second sleeve 44 in the axial direction. With this arrangement, the length of the second slit 446 is equal to the length of the second sleeve 44.

Illustratively, as shown in fig. 17, a second gap 446 may extend through the fourth end face 444 and the fourth end face 444.

Referring to fig. 18, a surface of the second swing arm 32 facing the base 10 is a second bottom 324, and an intersection line between the second bottom 324 and the second outer surface 442 of the second sleeve 44 is a second intersection line C2. It is defined that the distance between the second intersection line C2 and the third side 447 of the second slit 446 is a third distance and the distance between the second intersection line C2 and the fourth side 448 of the second slit 446 is a fourth distance. Wherein, the distance between the third side 447 and the second intersection line C2 is the length of the third side 447 and the second intersection line C2 in the circumferential direction of the second sleeve 44, and the distance between the fourth side 448 and the second intersection line C2 is the length of the fourth side 448 and the second intersection line C2 in the circumferential direction of the second sleeve 44.

The third distance and the fourth distance may be the same, or the third distance and the fourth distance may not be the same.

Under this setting, the position of slotting of second gap 446 can arrange everywhere position at second sleeve 44 according to actual conditions, is favorable to adapting to the application demand under the multi-scenario, and the flexibility is strong. It should be noted that when the second slit 446 is located at the position shown in fig. 18, the torsion applied to the second synchronizing swing arm 32 is reduced when the second synchronizing swing arm 32 rotates counterclockwise relative to the base 10. When the second synchronous swing arm 32 rotates clockwise relative to the base 10, the torque force applied to the second synchronous swing arm 32 increases. Wherein the counterclockwise rotation of the second synchronizing swing arm 32 with respect to the base 10 corresponds to the folding operation of the rotating mechanism 100, and the clockwise rotation of the second synchronizing swing arm 32 with respect to the base 10 corresponds to the unfolding operation of the rotating mechanism 100.

Based on the above description, it should be noted that shape characteristics such as the length, the width, the size of the slit, the slit angle of the second slit 446, the inner diameter of the second sleeve 44, the thickness of the second sleeve 44, and the like are strongly related to the torque magnitude of the second synchronizing swing arm 32, and may be adjusted according to the practical application scenario of the rotating mechanism 100, which is not strictly limited in the embodiment of the present application. Illustratively, the smaller the width of the second slit 446, the greater the torsion force of the second synchronization swing arm 32, and the width of the second slit 446 is the dimension of the second slit 446 in the circumferential direction of the second sleeve 44. The larger the interference between the second sleeve 44 and the fourth shaft 323, the larger the torsion of the second synchronizing swing arm 32. The thicker the wall thickness of the second sleeve 44, the greater the torsion of the second synchronizing swing arm 32, and the wall thickness of the second sleeve 44 is the radial dimension of the second sleeve 44. The higher the modulus of the material chosen for the second sleeve 44, the greater the torsion of the second synchronizing swing arm 32.

In a possible embodiment, the second inner surface 441 of the second sleeve 44 is provided with second helical grooves spirally distributed on the second inner surface 441 of the second sleeve 44, the second helical grooves being adapted to receive lubricating oil. The number of the second helical groove may be one or more, and when the number of the second helical groove is plural, the plural second helical grooves may be spaced apart. With this arrangement, the friction between the second sleeve 44 and the second shaft 42 can be reduced by the lubricant, which is beneficial to reduce the wear caused by the long-term operation of the second sleeve 44 and the second shaft 42, and prolong the service life of the damping assembly 40.

In the embodiment of the present application, the synchronizing gear 50 can realize the synchronous motion of the first and second synchronizing swing arms 31 and 32, that is, the opening and closing of the electronic device 400. Here, synchronous motion is understood to mean that the rotation angles of the first synchronous swing arm 31 and the second synchronous swing arm 32 are synchronous, i.e. if the first synchronous swing arm 31 rotates 30 ° relative to the base 10, the second synchronous swing arm 32 also rotates 30 ° relative to the base 10. In other words, the first synchronization swing arm 31 and the second synchronization swing arm 32 are respectively connected to two sides of the synchronization gear 50, and the first synchronization swing arm 31 can rotate relative to the base 10 and the second synchronization swing arm 32 is driven to rotate relative to the base 10 by the synchronization gear 50.

Fig. 19 is a schematic structural view of the synchronizing gear 50 of the rotating mechanism 100 shown in fig. 6.

Referring to fig. 19, the synchronizing gear 50 may include a first rotating gear 51, a second rotating gear 52, a first synchronizing gear 53, and a second synchronizing gear 54. The first rotation gear 51 is provided at one end of the first shaft body 41, the first shaft body 41 and the first rotation gear 51 may form a gear shaft structure, and the first rotation gear 51 is rotatable relative to the first shaft body 41. That is, the first rotating gear 51 can rotate about the first axis 411. The second rotating gear 52 is disposed at one end of the second shaft 42, the second shaft 42 and the second rotating gear 52 may also form a gear shaft structure, and the second rotating gear 52 can rotate relative to the second shaft 42. That is, the second rotating gear 52 is rotatable about the second axis 421. The first synchronizing gear 53 is meshed with the first rotating gear 51, the second synchronizing gear 54 is meshed with the second rotating gear 52, and the first synchronizing gear 53 and the second synchronizing gear 54 are meshed with each other.

Therefore, the first synchronizing swing arm 31, the second synchronizing swing arm 32, the first rotating gear 51, the second rotating gear 52, the first synchronizing gear 53 and the second synchronizing gear 54 can form a gear motion chain of "the first synchronizing swing arm 31-the first rotating gear 51-the first synchronizing gear 53-the second synchronizing gear 54-the second rotating gear 52-the second synchronizing swing arm 32", and the opening and closing of the first synchronizing swing arm 31 and the second synchronizing swing arm 32, that is, the opening and closing of the first main swing arm 22 and the second main swing arm 23, that is, the opening and closing of the electronic device 400, can be realized due to the gear meshing relationship of the synchronizing gear 50.

Fig. 20 is a schematic structural view of the limiting member 60 of the rotating mechanism 100 shown in fig. 6.

Referring to fig. 20, the limiting assembly 60 may include a first limiting member 61, a second limiting member 62, a third limiting member 63, a fourth limiting member 64, a fifth limiting member 65, a sixth limiting member 66, a seventh limiting member 67, and an eighth limiting member 68.

The first limiting member 61 is sleeved on one end of the first shaft 41 close to the synchronizing gear 50 and one end of the second shaft 42 close to the synchronizing gear 50. One end of the first limiting member 61 is located between the synchronizing gear 50 and the first sleeve 43, the other end of the first limiting member 61 is located between the synchronizing gear 50 and the second sleeve 44, and the connection portion between the two ends of the first limiting member 61 is located in the gap region between the first shaft body 41 and the second shaft body 42. The first stopper 61 has a receiving groove 611.

The second limiting member 62 is sleeved on one end of the first shaft 41 away from the synchronizing gear 50 and one end of the second shaft 42 away from the synchronizing gear 50. The second stopper 62 abuts against one end of the first sleeve 43, which is away from the synchronizing gear 50, and one end of the second sleeve 44, which is away from the synchronizing gear 50.

The third limiting member 63 is sleeved on the first shaft 41 and abuts against the second limiting member 62, a third contact portion 631 may be protruded on the third limiting member 63, the third contact portion 631 may contact with the floating support plate assembly 70, and the third contact portion 631 may support the floating support plate assembly 70 in the flat state of the rotating mechanism 100.

The fourth limiting member 64 is sleeved on the second shaft 42 and abuts against the second limiting member 62, a fourth contact portion 641 may be convexly disposed on the fourth limiting member 64, the fourth contact portion 641 may be capable of contacting with the floating support plate assembly 70, and the fourth contact portion 641 may support the floating support plate assembly 70 in the flattened state of the rotating mechanism 100.

The fifth limiting member 65 is sleeved on the first shaft 41 and abuts against the third limiting member 63, and the sixth limiting member 66 is sleeved on the second shaft 42 and abuts against the fourth limiting member 64. For example, the fifth limiting member 65 and the sixth limiting member 66 may be stop washers.

The seventh limiting member 67 is sleeved on the first shaft 41 and fixed to the first shaft 41, and the seventh limiting member 67 contacts with the fifth limiting member 65. The eighth limiting member 68 is sleeved on the second shaft 42 and fixed to the second shaft 42, and the eighth limiting member 68 contacts the sixth limiting member 66. Illustratively, the seventh and eighth limiting members 67 and 68 may be nuts.

It can be understood that the plurality of stoppers are used for limiting the movement of each structure sleeved on the first shaft 41 in the axial direction of the first shaft 41 and limiting the movement of each structure sleeved on the second shaft 42 in the axial direction of the second shaft 42, so as to ensure that the synchronous movement of the synchronous swing arm assembly 30 does not deflect, and ensure good reliability.

Fig. 21 is a schematic structural view of the floating support plate assembly 70 of the rotating mechanism 100 shown in fig. 6.

Referring to fig. 21, the floating support plate assembly 70 includes a floating support plate 71 and a first elastic member 72, the first elastic member 72 is located in the receiving groove 611 of the first limiting member 61, one end of the first elastic member 72 is connected to the first limiting member 61, and the other end of the first elastic member 72 is connected to the floating support plate 71. The first elastic member 72 can drive the floating support plate 71 to descend or ascend relative to the base 10, so that the floating support plate 71 supports the flexible display screen 300 in the unfolded state of the rotating mechanism 100, and the floating support plate 71 is retracted from the flexible display screen 300 in the folded state of the rotating mechanism 100, so as to adapt to the folding operation and the unfolding operation of the rotating mechanism 100.

In the flattened state of the rotating mechanism 100, the first contact portion 435 of the first sleeve 43, the second contact portion 445 of the second sleeve 44, the third contact portion 631 of the third limiting member 63, and the fourth contact portion 641 of the fourth limiting member 64 can contact with the floating support plate assembly 70, and the plurality of contact portions can support and jointly support the floating support plate 71 in the flattened state of the rotating mechanism 100, so that the floating support plate 71 can well support the flexible display 300.

The foregoing embodiments have been described in detail, and specific examples are used herein to explain the principles and implementations of the present application, where the above description of the embodiments is only intended to help understand the method and its core ideas of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (14)

1. A rotating mechanism is characterized by comprising a mounting seat, a first shaft body, a first sleeve and a first synchronous swinging arm;

the first shaft body with mount pad fixed connection, first sleeve with first synchronous swing arm fixed connection, first sleeve cover establish to on the first shaft body, first sleeve with cooperation between the first shaft body is interference fit, first sleeve has first gap, first gap is followed first telescopic radial direction runs through first telescopic internal surface and surface, first gap is followed first telescopic axial direction extends, first sleeve can be relative the first shaft body rotates, and drives first synchronous swing arm is relative the mount pad rotates.

2. The rotating mechanism according to claim 1, wherein a length of the first slit is smaller than or equal to a length of the first sleeve, the length of the first slit is a dimension of the first slit in an axial direction of the first sleeve, and the length of the first sleeve is a dimension of the first sleeve in the axial direction.

3. The rotating mechanism according to claim 1, wherein the first sleeve includes a first end surface and a second end surface that are opposite to each other, and the first slit penetrates the first end surface, or the first slit penetrates the second end surface, or the first slit penetrates the first end surface and the second end surface, or the first slit does not penetrate the first end surface and the second end surface.

4. The rotating mechanism according to any one of claims 1 to 3, wherein the first synchronous swing arm includes a first bottom surface, an intersection of the first bottom surface and the outer surface of the first sleeve is a first intersection, the first slit includes a first side and a second side that are disposed opposite to each other in the circumferential direction of the first sleeve, a distance between the first side and the first intersection is the same as or different from a distance between the second side and the first intersection, a distance between the first side and the first intersection is a length of the first side and the first intersection in the circumferential direction of the first sleeve, and a distance between the second side and the first intersection is a length of the second side and the first intersection in the circumferential direction of the first sleeve.

5. A rotating mechanism according to any one of claims 1-3, characterized in that the inner surface of the first sleeve is provided with first spiral grooves for receiving lubricating oil.

6. The rotating mechanism according to any one of claims 1 to 3, further comprising a second shaft body, a second sleeve and a second synchronous swing arm, wherein the second shaft body is fixedly connected with the mounting seat, and the second shaft body and the first shaft body are distributed on two sides of the mounting seat;

the second sleeve with synchronous swing arm fixed connection of second, the second muffjoint is established extremely on the second axle body, the second sleeve with cooperation between the second axle body is interference fit, the second sleeve has the second gap, the second gap is followed the telescopic radial direction of second runs through the telescopic internal surface of second and surface, the second gap is followed the telescopic axial direction of second extends, the second sleeve can be relative the second axle body rotates, and drives the synchronous swing arm of second is relative the second axle body rotates.

7. The rotating mechanism according to claim 6, wherein the length of the second slit is smaller than or equal to the length of the second sleeve, the length of the second slit is a dimension of the second slit in an axial direction of the second sleeve, and the length of the second sleeve is a dimension of the second sleeve in the axial direction.

8. The rotating mechanism according to claim 6, wherein the second sleeve includes a third end surface and a fourth end surface which are oppositely arranged, and the second slit penetrates through the third end surface, or the second slit penetrates through the fourth end surface, or the second slit penetrates through the third end surface and the fourth end surface, or the second slit does not penetrate through the third end surface and the fourth end surface.

9. The rotating mechanism according to any one of claims 7 or 8, wherein the second synchronizing swing arm includes a second bottom surface, an intersection of the second bottom surface and the outer surface of the second sleeve is a second intersection, the second slit includes a third edge and a fourth edge oppositely disposed in the circumferential direction of the second sleeve, a distance between the third edge and the second intersection is the same as or different from a distance between the fourth edge and the second intersection, a distance between the third edge and the second intersection is a length of the third edge and the second intersection in the circumferential direction of the second sleeve, and a distance between the fourth edge and the second intersection is a length of the fourth edge and the second intersection in the circumferential direction of the second sleeve.

10. A rotation mechanism according to any one of claims 7 or 8, wherein the inner surface of the second sleeve is provided with a second helical groove for receiving lubricating oil.

11. The rotating mechanism according to any one of claims 7 or 8, further comprising a synchronizing gear, wherein the synchronizing gear is sleeved on the first shaft and the second shaft and located between the mounting seat and the first sleeve and the second sleeve, and the first synchronizing swing arm rotates relative to the mounting seat and drives the second synchronizing swing arm to rotate relative to the mounting seat through the synchronizing gear.

12. The rotating mechanism according to claim 11, further comprising a first limiting member, wherein the first limiting member is sleeved on the first shaft and the second shaft, and the first limiting member is located between the synchronizing gear and the first sleeve and the second sleeve.

13. The rotating mechanism according to any one of claims 7 or 8, further comprising a first main swing arm and a second main swing arm, wherein the first main swing arm is rotatably connected with the mounting base, and the second main swing arm is rotatably connected with the mounting base;

the first main swing arm is provided with a first sliding groove, the first synchronous swing arm comprises a first end, a second end and a third shaft body, the third shaft body is connected to the first end, the third shaft body can slide in the first sliding groove, and the second end is connected with the first sleeve;

the second main swing arm is provided with a second sliding groove, the second synchronous swing arm comprises a third end, a fourth end and a fourth shaft body, the fourth shaft body is connected to the third end, the fourth shaft body can slide in the second sliding groove, and the fourth end is connected with the second sleeve.

14. An electronic device, characterized in that the electronic device comprises a first housing, a second housing, and a rotating mechanism according to any one of claims 1 to 13, the rotating mechanism being connected between the first housing and the second housing.

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