CN114697418A

CN114697418A - Limiting action mechanism and electronic equipment

Info

Publication number: CN114697418A
Application number: CN202011605960.2A
Authority: CN
Inventors: 廖德知; 陈松亚
Original assignee: Shenzhen Royole Technologies Co Ltd
Current assignee: Shenzhen Royole Technologies Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2022-07-01

Abstract

The invention relates to the technical field of flexible display screen support, and discloses a limiting action mechanism and electronic equipment. The action mechanism includes: the sliding part comprises a sliding part and a first limiting part; the driving piece comprises a sliding groove part and a rotating arm, the rotating arm rotates around the first rotating shaft to switch between a first state and a second state, and the sliding part is in sliding fit with the sliding groove part; the movable piece comprises a second limiting part, and the second limiting part is arranged towards the first limiting part; and an elastic element is arranged between the fixed element and the movable element. When the rotating arm is in the first state, the movable part is acted by the elastic element, so that the second limiting part and the second limiting part are matched for limiting and abut against the sliding part; when the rotating arm is in the second state, the first limiting part and the second limiting part are separated from limiting matching. The sliding piece can move transversely and can be limited to move longitudinally; in the electronic apparatus having the above-described operating mechanism, the movement of the slider can tighten the flexible display screen and also can keep the flexible display screen stable in the longitudinal direction.

Description

Limiting action mechanism and electronic equipment

Technical Field

The invention relates to the technical field of flexible display screen support, in particular to a limiting action mechanism and electronic equipment with the same.

Background

With the development of display technology, a bendable and ultrathin electronic display screen, i.e., a flexible display screen, has appeared. Compared with the traditional display screen, the flexible display screen has the advantages of being foldable, transparent, curved, flexible, stretchable and the like, and is widely favored by consumers.

A foldable flexible display device generally includes a folding device for supporting and protecting a flexible display screen, and a flexible display screen that is bent or flattened along with the folding device.

An inner folding mobile phone is a type of folding electronic equipment, and an inner folding hinge is an indispensable accessory in the production process. However, the traditional internal folding hinge structure has more and complicated actuating mechanisms; moreover, the traditional internal folding mobile phone has no mechanism for tightening the flexible display screen, so that the flexible display screen is easy to be in a loose state when the mobile phone is unfolded, and further, the displayed picture is not smooth enough, and the use feeling is influenced.

Disclosure of Invention

The invention aims to provide a limiting action mechanism and electronic equipment with the action mechanism, so as to solve the technical problem that the current electronic equipment such as a mobile phone is lack of a mechanism for tightening a screen.

The invention adopts the following technical scheme for solving the technical problems: a spacing actuating mechanism, it includes: the sliding part comprises a sliding part and a first limiting part; the driving piece is provided with a sliding groove part and a rotating arm, the rotating arm is used for rotating around a first rotating shaft so as to switch between a first state and a second state, and the sliding part is in sliding fit with the sliding groove part; the movable piece comprises a second limiting part, and the second limiting part is arranged towards the first limiting part; the fixed part, the fixed part with set up the elastic component between the moving part. When the rotating arm is in a first state, the movable piece is acted by the elastic piece, so that the first limiting part and the second limiting part are matched for limiting and abut against the sliding piece; when the rotating arm is in the second state, the first limiting part and the second limiting part are separated from limiting fit.

The invention also adopts the following technical scheme for solving the technical problems: an electronic device, comprising: the flexible display screen, the frame and the action mechanism are arranged in the sliding part, the frame is fixedly connected with the sliding part, and the flexible display screen is fixedly connected with the frame; when the rotating arm is in a first state, the sliding part is propped against the moving part to drive the frame to move, so that the flexible display screen is tightened; when the rotating arm is in the second state, the sliding piece is not propped against by the movable piece.

The beneficial effects of the invention are: in the limiting action mechanism of the embodiment of the application, the first limiting part and the second limiting part are matched for limiting and abut against the sliding part through the action force of the elastic piece on the moving piece, so that the sliding part can be enabled to move transversely for a certain distance; meanwhile, the second limiting part is matched with the first limiting part, so that the sliding piece can be limited to move in the longitudinal direction by matching. Correspondingly, in the electronic device with the actuating mechanism, when the rotating arm is in the first state, the sliding part is abutted by the moving part to drive the frame to move, so that the flexible display screen is tightened; when the rotating arm is in the second state, the sliding piece is not propped against by the movable piece. That is, since the sliding member may be fixedly connected to the frame of the electronic device and the flexible display is fixedly connected to the frame, the movement of the sliding member can cause the flexible display to be tightened, so that the display screen of the flexible display is flat.

Drawings

One or more embodiments are illustrated in drawings corresponding to, and not limiting to, the embodiments, in which elements having the same reference number designation may be represented as similar elements, unless specifically noted, the drawings in the figures are not to scale.

Fig. 1 is a schematic plan view of an electronic device according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of a folding device of the electronic apparatus in FIG. 1;

FIG. 3 is another perspective view of the folding device of FIG. 2;

FIG. 4 is a perspective view of a frame of the folding device of FIG. 2;

fig. 5 is a partial perspective view of a limiting mechanism according to an embodiment of the present invention;

FIG. 6 is an exploded perspective view of the actuator of FIG. 5;

FIG. 7 is a perspective view of a slider of the actuator of FIG. 6;

FIG. 8 is a perspective view of a drive member of the actuator of FIG. 6;

FIG. 9 is a schematic perspective view of the movable member of the actuator of FIG. 6;

FIG. 10 is a perspective view of a stationary member of the actuator of FIG. 6;

fig. 11 is a partial perspective view of the oscillating member of the actuating mechanism of fig. 6.

Detailed Description

In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples. It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "vertical," "horizontal," "left," "right," "inner," "outer," and the like as used herein are for purposes of description only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

In this specification, the term "mounting" includes fixing or limiting a certain element or device to a specific position or place by welding, screwing, clipping, adhering, etc., the element or device may be fixed or movable in a limited range in the specific position or place, and the element or device may be removed or not after being fixed or limited to the specific position or place, and is not limited in the embodiment of the present invention. The term "connected" includes direct connection between one element and another element and indirect connection between one element and another element and one or more other elements, and is not particularly limited in embodiments of the present invention unless otherwise specified.

Referring to fig. 1 to fig. 3, an electronic device 300 according to an embodiment of the invention is shown. The electronic device 300 may mainly include the flexible display 90 and the folding device 200. The flexible display 90 is disposed on the folding device 200 and can be folded and deformed together with the folding of the folding device 200. The electronic device 300 may be a mobile phone, a tablet computer, or the like.

The flexible display screen 90 may be an OLED display screen (organic light emitting display) or an AMOLED display screen (active matrix organic light emitting diode panel), which is bent, curled or folded under the action of an external force. For example, the flexible display screen 90 may be an AMOLED display screen, which has the characteristics of thinness, lightness, high definition, high brightness, low energy consumption and wide temperature range. The thickness of the flexible display 90 may be between 0.01mm and 0.2mm and enables a flexible display.

The folding device 200 is basically a hinge structure, which may include a hinge body 80 and two supporting plate structures a and a' movably connected to both sides of the hinge body 80. The hinge body 80 is adapted to provide a relatively fixed support body so that the support panel structures a and a' can be deployed and folded inwardly relative to the hinge body 80.

Wherein the two support plate structures a and a' may be substantially similar or may be different in order to accommodate different functional requirements. The following description will be made mainly with respect to the support plate structure a.

As shown in fig. 2 and 3, the supporting plate structure a may mainly include a frame 70, a front frame 95, a rear case 96, and a limiting mechanism 100. The front frame 95 and the rear case 96 are respectively installed at the front side and the rear side of the frame 70, and mainly perform decoration and sealing. The front frame 95 may have a structure with three frames so as to form a space for accommodating the flexible display screen 90; the three rims are preferably narrow rims. The rear shell 96 may be thin plate-like to define a smooth outer profile with the rear side of the frame 70. The actuating mechanisms 100 may be two in number to be disposed at both ends of one side of the supporting plate structure a. The pivot shaft of the action mechanism 100 is provided on the hinge main body 80.

Similarly, the support plate structure a' and the support plate structure a may both be connected to the hinge body 80, e.g., may be symmetrically disposed about the hinge body 80; in particular, the supporting plate structure a' may also have two actuating mechanisms 100. Thus, in the electronic apparatus 300, four of the actuating mechanisms 100 may be employed, and they may be connected to the hinge main body 80, for example, may be symmetrically disposed with respect to the hinge main body 80.

As shown in fig. 4, the frame 70 may be a relatively main frame of the electronic device 300, and may have a substantially square plate shape, and may be provided with various functional structures, such as a structure for fitting with the front frame 95, a structure for fitting with the rear case 96, a surface for attaching and fixing the flexible display 90, a groove for receiving a battery of the electronic device 300, and the like. Since the frame 70 is located between the front bezel 95 and the rear case 96, it may also be referred to as a middle bezel.

The frame 70 may also be provided with mounting slots 71 and recesses 72 for cooperating with the actuating mechanism 100, as will be described in more detail below. The number of the mounting grooves 71 may be two, which is the same as the number of the actuating mechanisms 100.

The above is a general description of the electronic device 300 of the present invention, and the operation mechanism 100 thereof will be described in detail.

Referring to fig. 5 and 6, the actuating mechanism 100 may mainly include a sliding member 10, a driving member 20, a movable member 30, a fixed member 40, an elastic member 50, and a swinging member 60. The sliding member 10 is slidably engaged with the driving member 20, the elastic member 50 is disposed between the fixed member 40 and the movable member 30, and the oscillating member 60 is configured to engage with the movable member 30.

As shown in fig. 7, the sliding member 10 may have a sliding portion 11 and a first position-limiting portion 13. For example, the first position-limiting portion 13 may be a groove 13 provided on the end surface 12. The sliding part 11 is a sliding structure of the sliding part 10, and may be a sliding rail, and may be in a shape of a Chinese character 'tu' in cross section, so as to be matched with a corresponding sliding guide groove, and to realize stable linear motion; as shown in fig. 8, the driving member 20 has a slide groove portion 21 and a rotating arm 22, and the rotating arm 22 is configured to rotate about a first rotating shaft 81 (see fig. 6) provided on the hinge main body 80 to switch between a first state and a second state. The sliding part 11 is in sliding fit with the sliding groove part 21; the sliding groove part 21 is a sliding structure of the driving part 20, and can be provided with a sliding guide groove, the cross section shape of the sliding guide groove is adapted to the cross section shape of the sliding part 11, so that the sliding guide groove and the sliding part are mutually nested and matched, and stable linear sliding is realized; as shown in fig. 9, the movable element 30 has a second position-limiting portion 31, and the second position-limiting portion 31 is disposed toward the first position-limiting portion 13; for example, the second stopper portion 31 may be a protrusion; as shown in fig. 10, the fixed member 40 is disposed opposite to the movable member 30 so as to sandwich the elastic member 50 therebetween.

When the rotating arm 22 is in the first state, for example, when the rotating arm 22 is unfolded relative to the hinge main body 80 and is in the horizontal state, the movable element 30 receives the acting force of the elastic element 50, so that the first limiting portion 13 and the second limiting portion 31 cooperate to limit and abut against the sliding element 10; when the rotating arm 22 is in the second state, for example, when the rotating arm 22 is folded with respect to the hinge main body 80 to be in the vertical state, the first stopper portion 13 and the second stopper portion 31 are disengaged from the stopper engagement. The fixed member 40 may be substantially fixed within the supporting plate structure a, for example, may be fixedly connected to the swinging member 60 by screws; thus, the elastic member 50, which is compressively disposed between the stationary member 40 and the movable member 30, applies force to the movable member 30 and causes the movement thereof. In addition, since the rotating arm 22 is coupled to the driving member 20, the rotation of the rotating arm 22 to the first state means that the driving member 20 is rotated to the first state. Herein, the first state corresponds to the unfolded state of the support plate structures a and a 'and the flexible display 90, and the second state may be any other state than the first state, for example, may correspond to the folded-in state of the support plate structures a and a' and the flexible display 90.

In the actuating mechanism 100 of the above embodiment, the movable element 30 is acted by the elastic element 50, so that the first limiting portion 13 and the second limiting portion 31 are matched for limiting and abut against the sliding element 10, and the sliding element 10 can be urged to move transversely for a certain distance; meanwhile, since the second stopper portion 31 is engaged with the first stopper portion 13 by the stopper, the engagement can also restrict the movement of the slider 10 in the longitudinal direction.

Accordingly, in the electronic device 300 having the actuating mechanism 100, when the rotating arm 22 is in the first state, the sliding member 10 is pressed by the movable member 30 to move the frame 70, so that the flexible display 90 is stretched; when the rotating arm 22 is in the second state, the sliding member 10 is not abutted by the moving member 30, so that the flexible display 90 is not pulled, and the bending portion in the middle of the flexible display 90 is bent, thereby folding the electronic device 300. That is, since the sliding member 10 can be fixedly connected to the frame 70 of the electronic device 300 and the flexible display 90 is fixedly connected to the frame 70, the movement of the sliding member 10 can cause the flexible display 90 to be tightened, so that the display screen of the flexible display 90 is flat, and the flexible display 90 connected to the sliding member 10 can be kept stable in the longitudinal direction.

As shown in fig. 1, when the flexible display 90 is fixed to the folding device 200, the flexible display can be fixed by bonding mainly at two sides away from the hinge body 80 and the actuating mechanism 100, so that the flexible display can be stretched between the two sides.

In some embodiments, as shown in fig. 6, when the actuating mechanism 100 includes the swinging member 60, the fixing member 40 may be fixedly connected to the swinging member 60 by a screw, for example, and the swinging member 60 is configured to rotate around a second rotating shaft 82, and the first rotating shaft 81 and the second rotating shaft 82 are not coaxial. The first limiting part 13 and the second limiting part 31 are separated from limiting fit in the second state by arranging the first rotating shaft 81 and the second rotating shaft 82 to be not coaxial, so that rotating members connected with the first rotating shaft 81 and the second rotating shaft 82 can generate different motion tracks conveniently.

In some embodiments, as shown in fig. 11 and 6, a side of the swinging member 60 facing the movable member 30 may be provided with a sliding rail 64, and the sliding rail 64 is used for cooperating with the movable member 30 so as to guide the movable member 30 to slide on the swinging member 60. For example, as shown in connection with FIG. 9, the moveable member 30 can be provided with the guide portion 34 such that a portion of the guide portion 34 engages the slide rail 64 to effect sliding movement therebetween in a lateral direction while preventing relative movement therebetween in a longitudinal direction. This may define the sliding direction of the moveable member 30.

In some embodiments, as shown in connection with fig. 6 and 11, the oscillating piece 60 comprises a first stop surface 61; the swinging member 60 can be fixedly connected to the intermediate member 63, and the intermediate member 63 is directly rotatably engaged with the second rotating shaft 82 provided on the hinge main body 80, so that the intermediate member 63 and the swinging member 60 rotate around the second rotating shaft 82. In addition, the second rotating shaft 82 may be further connected with a gear 83, and a damping spring 84 may be further provided to achieve synchronous rotation of the two supporting plate structures a and a 'with respect to the hinge body 80 by the respective intermediate members 63 through engagement between the gears, and to achieve resistive rotation of the two supporting plate structures a and a' with the respective intermediate members 63 through the damping spring 84. For example, the damping spring 84 can be sleeved on the second rotating shaft 82 and can apply an elastic force to the intermediate member 63, so that the intermediate member 63 generates a large friction force when rotating, and thus a retarding effect is generated.

Accordingly, as shown in connection with FIG. 9, the moveable member 30 includes a second stop surface 33. Thus, as shown in fig. 5 and 6 in combination, when the rotating arm 22 is in the first state, the first stop surface 61 is away from the second stop surface 33; when the rotating arm 22 is in the second state, the first stop surface 61 contacts the second stop surface 33 to block the movable member 30 from moving toward the slider 10. Wherein, the arrangement is such that when the rotating arm 22 and the swinging member 60 are both in the first state of deployment, the first stop surface 61 of the swinging member 60 is away from the second stop surface 33, so that the two are not in a restricting relationship; and such that during the rotation of both the rotating arm 22 and the swinging member 60 from the first, unfolded state to the second, substantially vertical state, the first stop surface 61 of the swinging member 60 can approach and press the second stop surface 33, thereby pressing the movable member 30 in a direction away from the slide member 10. For example, it can be arranged that after the rotating arm 22 rotates to a certain angle from the first unfolded state to the second state, the movable member 30 is no longer in contact with the sliding member 10, the sliding member 10 is not under the action of the spring force, and the frame 70 and the flexible display 90 are not under the action of the spring force; the angle may range from 20 degrees to 80 degrees, for example, may be 30 degrees, 45 degrees, 60 degrees, etc. It is readily apparent that the movable member 30, as it moves away from the slider 10, no longer abuts against the slider 10.

In some embodiments, as shown in fig. 6, the swinging member 60 can be movably connected to the driving member 20, such that when one of the driving member 20 and the swinging member 60 rotates, the other of the driving member 20 and the swinging member 60 rotates. For example, as shown in connection with FIG. 8, the pivot arm 22 of the actuator 20 may have an arcuate slot 26; as shown in fig. 6, the first rotating shaft 81 and the second rotating shaft 82 may be disposed in a staggered manner, that is, they are not on the same axis; the swinging member 60 has a third rotating shaft 62, and the third rotating shaft 62 is engaged with the arc-shaped groove 26. Thus, when the rotating arm 22 is in the first state, the third rotating shaft 62 is located at the first end 27 of the arc-shaped slot 26, and the top surface of the swinging member 60 is parallel to the top surface of the sliding member 10, as can be seen in fig. 5.

In addition, when the rotating arm 22 is in the second state, the third rotating shaft 62 is located at the second end 28 of the arc-shaped slot 26, and the top surface of the swinging member 60 is no longer parallel to the top surface of the sliding member 10. Because the first rotating shaft 81 and the second rotating shaft 82 are arranged in a staggered manner, the swinging member 60 and the driving member 20 have different rotating axes and correspondingly different movement traces when rotating towards the second state, so that the swinging member 60 is caused to be matched with the movable member 30 in a stop manner and the movable member 30 is pressed to be more inserted into the recess 72 (see fig. 4) of the frame 70.

In some embodiments, as shown in fig. 7 and 9, the first position-limiting part 13 and the second position-limiting part 31 can be matched by a groove and a protrusion. For example, when the first position-limiting part 13 is a groove, the second position-limiting part 31 is a protrusion; further, the cross section of the groove and the cross section of the protrusion are both tapered. By the cooperation of the tapered profiles, after the second position-limiting portion 31 is inserted into the first position-limiting portion 13, the slider 10 can be urged to move in the lateral direction, and the movement of the slider 10 in the longitudinal direction can be limited. In addition, the first position-limiting portion 13 may be a groove penetrating from one side of the end surface 12 to the other side; accordingly, the cross-sectional shape of the second stopper portion 31 in the direction from one side to the other side may be uniform, i.e., both may be tapered. Of course, a structure having a rectangular cross section may be employed between the second limiting portion 31 and the guide portion 34.

In some embodiments, as shown in fig. 7, the sliding member 10 may further include a fixing portion 14, and the sliding member 10 is fixedly connected to the frame 70 of the electronic device 300 through the fixing portion 14. The fixing portion 14 may be located at an end of the sliding portion 11 away from the end surface 12. For example, the fixing portion 14 may be screwed into the mounting groove 71 of the frame 70. By fixedly connecting the fixing portion 14 with the frame 70, the frame 70 can be moved by the sliding member 10, and the flexible display screen 90 can be tensioned. The sliding portion 11 may be fixedly connected to the frame 70 as long as the movement of the sliding portion 11 in the sliding groove portion 21 is not hindered.

In some embodiments, as shown in fig. 8, the rotating arm 22 of the driving member 20 has a rotating shaft hole 23, and the rotating shaft hole 23 is used for matching with the first rotating shaft 81 of the hinge main body 80. The driving member 20 further includes a supporting plate 24, the sliding groove portion 21 and the rotating arm 22 define an accommodating space 25, and the movable member 30 and the fixed member 40 are located in the accommodating space 25. By arranging the first rotating shaft 81 to be matched with the rotating shaft hole 23, the driving member 20 and the sliding member 10 and the frame 70 connected with the driving member can rotate around the first rotating shaft 81.

In addition, the fixing portion 14 can also realize a stop fit with the sliding groove portion 21 so as to limit the sliding member 10.

In some embodiments, as shown in fig. 9 and 10, the movable member 30 has a first positioning post 32, and the fixed member 40 has a second positioning post 41. As shown in fig. 6, the elastic element 50 is a spring, and two ends of the spring are respectively sleeved on the first positioning column 32 and the second positioning column 41 and can be set in a compressed state, so as to apply an acting force to the movable element 3. The springs can be conveniently installed and positioned by using the springs and the

positioning columns

32 and 41. In other embodiments, the elastic member 50 may also be an elastic rubber, a spring plate capable of applying an elastic force, or the like.

Further, the number of the first positioning column 32, the second positioning column 41 and the coil spring is two. Through the arrangement of the two groups of the first positioning column 32, the second positioning column 41 and the coil spring, the moving member 30 can move stably, and twisting in the moving process is avoided.

In some embodiments, as shown in conjunction with FIGS. 9 and 10, the moveable member 30 and the stationary member 40 can also be connected by a slip fit arrangement. For example, the guide portion 34 may be disposed on the movable member 30, and the fixed member 40 may be disposed with the guide groove 42, so that the transverse sliding movement of the guide portion 34 and the guide groove 42 is achieved by engaging a portion of the guide portion with the guide groove 42, while the longitudinal relative movement is prevented. This further smoothes movement of the moveable member 30.

Further, referring to fig. 4, in order to facilitate the moving of the movable member 30 relative to the frame 70, a side wall of the recess 72 near the mounting groove 71 may be provided with an arc surface to guide the second position-limiting portion 31 of the movable member 30.

In summary, it can be understood that, in the actuating mechanism 100 of the above embodiment, the movable element 30 receives the acting force of the elastic element 50, so that the first limiting portion and the second limiting portion cooperate to limit and abut against the slider 10, thereby enabling the slider 10 to move laterally by a certain distance; meanwhile, since the position is limited by the engagement of the second position limiting portion 31 with the first position limiting portion 13, the movement of the slider 10 in the longitudinal direction can be limited by the engagement.

Accordingly, in the electronic device 300 having the actuating mechanism 100, when the rotating arm 22 is in the first state, the sliding member 10 is pressed by the movable member 30 to move the frame 70, so that the flexible display 90 is stretched; when the rotating arm 22 is in the second state, the sliding member 10 is not abutted by the movable member 30. That is, since the sliding member 10 can be fixedly connected to the frame 70 of the electronic device 300 and the flexible display 90 is fixedly connected to the frame 70, the movement of the sliding member 10 can cause the electronic device 300 to tighten the flexible display 90 in a flattened state, so that the display screen of the flexible display 90 is flat, and at the same time, the flexible display 90 connected to the sliding member 10 can be kept stable in the longitudinal direction, and the flexible display 90 is not subjected to a tightening force when the electronic device 300 is in a non-flattened state, so as to prevent the electronic device from being damaged by a pulling force for a long time, and can be bent more easily during the bending process, or a bending structure, such as a U-shape, a large-droplet type or a small-droplet type, can be formed more easily in the bending region.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A limit action mechanism is characterized by comprising:

the sliding part comprises a sliding part and a first limiting part;

the driving piece comprises a sliding groove part and a rotating arm, the rotating arm is used for rotating around a first rotating shaft so as to switch between a first state and a second state, and the sliding part is in sliding fit with the sliding groove part;

the movable piece comprises a second limiting part, and the second limiting part is arranged towards the first limiting part; and

the fixed piece is arranged between the movable piece and the movable piece;

when the rotating arm is in a first state, the movable part is acted by the elastic piece, so that the first limiting part and the second limiting part are matched for limiting and abut against the sliding part; when the rotating arm is in the second state, the first limiting part and the second limiting part are separated from limiting fit.

2. The action mechanism of claim 1, wherein:

the action mechanism further comprises a swinging piece, the fixed piece is fixedly connected to the swinging piece, the swinging piece is used for rotating around a second rotating shaft, and the first rotating shaft and the second rotating shaft are not coaxial.

3. Action mechanism according to claim 2, characterized in that:

the swing piece is provided with a sliding rail, and the sliding rail is matched with the moving piece and used for guiding the moving piece to slide on the swing piece.

4. The motion mechanism of claim 2, wherein:

the oscillating member includes a first stop surface; the movable member includes a second stop surface;

when the rotating arm is in the second state, the first stop surface contacts the second stop surface to stop the movable piece from moving towards the direction close to the sliding piece.

5. The operating mechanism of claim 2 wherein the oscillating member is movably coupled to the driving member such that rotation of one of the driving member and the oscillating member causes rotation of the other of the driving member and the oscillating member.

6. The motion mechanism of claim 1, wherein:

the first limiting part and the second limiting part are matched through a groove and a protrusion.

7. The action mechanism of claim 6, wherein:

the cross section of the groove and the cross section of the protrusion are both conical.

8. The motion mechanism of claim 1, wherein:

the sliding part further comprises a fixing part, and the sliding part is fixedly connected with the frame of the electronic equipment through the fixing part.

9. The motion mechanism of claim 1, wherein:

the rotating arm of the driving piece comprises a rotating shaft hole which is used for being matched with the first rotating shaft; and is

The driving piece further comprises a supporting plate, an accommodating space is defined by the supporting plate, the sliding groove portion and the rotating arm, and the moving piece and the fixing piece are located in the accommodating space.

10. Action mechanism according to any one of claims 1-9, characterized in that:

the movable part is provided with a first positioning column, and the fixed part is provided with a second positioning column; and is

The elastic piece is a spring, and two ends of the spring are respectively sleeved on the first positioning column and the second positioning column.

11. An electronic device, comprising:

a flexible display, a frame and an action mechanism according to any of claims 1-10, the frame being fixedly connected to the slide, the flexible display being fixedly connected to the frame; and is

When the rotating arm is in a first state, the sliding part is propped against the moving part to drive the frame to move, so that the flexible display screen is tightened; when the rotating arm is in the second state, the sliding piece is not propped against by the movable piece.

12. The electronic device of claim 11, wherein:

the electronic equipment further comprises a hinge main body, the rotating arm and the swinging piece are respectively connected to the hinge main body in a rotating mode, and the rotating shaft of the rotating arm is not coaxial with the rotating shaft of the swinging piece.

13. The electronic device of claim 12, wherein:

the number of the frames is two, and the frames are movably connected to two opposite sides of the hinge main body respectively.