CN114697418A - Limit action mechanism and electronic equipment - Google Patents

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

Limit action mechanism and electronic equipment

technical field

The invention relates to the technical field of flexible display screen support, in particular to a limit action mechanism and an electronic device having the action mechanism.

Background technique

With the development of display technology, a bendable and ultra-thin electronic display, that is, a flexible display, has emerged. Compared with traditional display screens, flexible display screens have the advantages of foldable, transparent, curved, flexible and stretchable, and are widely favored by consumers.

A foldable flexible display device generally includes a folding device and a flexible display screen, the folding device is used to support and protect the flexible display screen, and the flexible display screen is bent or flattened with the folding device.

As a type of foldable electronic device, an inner-folding mobile phone has an inner-folding hinge as an indispensable accessory during the production process. However, the traditional inner-folding hinge structure has many and complex action mechanisms; moreover, the traditional inner-folding mobile phone does not have a mechanism to tighten the flexible display screen, which makes the flexible display screen easy to relax when the mobile phone is unfolded, resulting in insufficient display screen. Flat, affect the use experience.

SUMMARY OF THE INVENTION

The present invention aims to provide a limit action mechanism and an electronic device having the action mechanism, so as to solve the technical problem of the lack of a mechanism for tightening the screen in current electronic devices such as mobile phones.

The present invention solves its technical problems by adopting the following technical solutions: a limit action mechanism, comprising: a sliding member, the sliding member includes a sliding portion and a first limiting portion; a driving member, the driving member has a chute portion and a rotating arm, the rotating arm is used to rotate around the first rotating shaft to switch between the first state and the second state, the sliding part is slidingly matched with the sliding groove part; the movable part includes a second state A limiting portion, the second limiting portion is disposed toward the first limiting portion; a fixing piece, an elastic piece is arranged between the fixing piece and the movable piece. When the rotating arm is in the first state, the movable member is subjected to the force of the elastic member, so that the first limiting portion and the second limiting portion cooperate to limit and abut the sliding member; When the rotating arm is in the second state, the first limiting portion and the second limiting portion are disengaged from the limiting engagement.

The present invention also adopts the following technical solutions to solve its technical problems: an electronic device, comprising: a flexible display screen, a frame, and an action mechanism according to any one of the above, wherein the frame is fixedly connected to the sliding member, and the flexible The display screen is fixedly connected with the frame; when the rotating arm is in the first state, the sliding member is pushed by the movable member to drive the frame to move, so that the flexible display screen is stretched; When the rotating arm is in the second state, the sliding member is not pressed by the movable member.

The beneficial effects of the present invention are: in the limiting action mechanism of the embodiment of the present application, the first limiting portion and the second limiting portion cooperate to limit the position and the movable member is subjected to the force of the elastic member. push the slider against the slider, so that the slider can be moved laterally for a certain distance; at the same time, because the second limit part cooperates with the first limit part, the cooperation can also limit the slider in the longitudinal direction movement. Correspondingly, in the electronic device with the above-mentioned action mechanism, when the rotating arm is in the first state, the sliding member is pushed by the movable member to drive the frame to move, so that the flexible display screen is moved. Tighten; when the rotating arm is in the second state, the sliding member is not pressed by the movable member. That is to say, since the sliding member can be fixedly connected with the frame of the electronic device, and the flexible display screen is fixedly connected with the frame, the movement of the sliding member can cause the flexible display screen to be stretched, so that the flexibility The display screen is flat.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings represent similar elements, unless otherwise specified. It is stated that the figures in the accompanying drawings do not constitute a scale limitation.

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

Fig. 2 is a three-dimensional schematic diagram of the folding device of the electronic device in Fig. 1;

Fig. 3 is another perspective schematic diagram of the folding device in Fig. 2;

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

FIG. 5 is a partial three-dimensional schematic diagram of a limit action mechanism provided by an embodiment of the present invention;

Fig. 6 is the three-dimensional exploded schematic diagram of the action mechanism in Fig. 5;

FIG. 7 is a perspective view of the slider of the action mechanism in FIG. 6;

FIG. 8 is a perspective view of the driving member of the action mechanism in FIG. 6;

Fig. 9 is the three-dimensional schematic diagram of the movable member of the action mechanism in Fig. 6;

Fig. 10 is a perspective view of the fixing member of the action mechanism in Fig. 6;

FIG. 11 is a partial perspective view of the swinging member of the action mechanism in FIG. 6 .

Detailed ways

In order to facilitate understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element, or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the present invention. The terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. As used in this specification, the term "and/or" includes any and all combinations of one or more of the associated listed items.

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

In this specification, the "installation" includes welding, screwing, snapping, gluing, etc. to fix or restrict a certain element or device to a specific position or place, and the element or device can be held in a specific position or place. It can also move within a limited range without moving, and the element or device can be disassembled or not disassembled after being fixed or limited in a specific position or place, which is not limited in the embodiment of the present invention. The "connection" includes the direct connection between one element and another element and the indirect connection between one element and another element and one or more other elements. Unless otherwise specified, it is not specifically limited in the embodiments of the present invention.

Please refer to FIG. 1 to FIG. 3 , which illustrate an electronic device 300 provided by one embodiment of the present invention. The electronic device 300 may mainly include a flexible display screen 90 and a folding device 200 . The flexible display screen 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 90 may be an OLED display (organic light emitting display) or an AMOLED display (active matrix organic light emitting diode panel), which is bent, curled or folded under the action of external force. For example, the flexible display screen 90 may adopt an AMOLED display screen, which has the characteristics of thinner, lighter, high-definition, high-brightness, low power consumption, and a wide operating temperature range. The thickness of the flexible display screen 90 can be between 0.01mm and 0.2mm, and can realize soft display.

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

Wherein, the two supporting plate structures A and A' can be basically similar or different to suit different functional requirements. The following mainly focuses on the detailed introduction of the support plate structure A.

As shown in FIG. 2 and FIG. 3 , the support plate structure A may mainly include a frame 70 , a front frame 95 , a rear shell 96 and a limit action mechanism 100 . The front frame 95 and the rear shell 96 are respectively installed on the front side and the rear side of the frame 70, and mainly play the role of decoration and sealing. The front frame 95 can be a structure with three frames so as to enclose a space for accommodating the flexible display screen 90 ; the three frames are preferably narrow frames. The rear shell 96 may be in the shape of a thin plate to define a smooth outer contour together with the rear side of the frame 70 . The number of the action mechanisms 100 may be two, so as to be provided at both ends of one side of the support plate structure A. As shown in FIG. The pivot shaft of the action mechanism 100 is provided on the hinge body 80 .

Similarly, the support plate structure A' and the support plate structure A can both be connected to the hinge body 80, for example, can be arranged symmetrically with respect to the hinge body 80; in particular, the support plate structure A' It is also possible to have two of the action mechanisms 100 . Therefore, in the electronic device 300 , four of the action mechanisms 100 can be used, and they are all connected to the hinge body 80 , for example, can be arranged symmetrically with respect to the hinge body 80 .

As shown in FIG. 4 , the frame 70 is a relatively main structural frame in the electronic device 300 , and it can be roughly in the shape of a square plate, and various functional structures can be set on it, such as a frame for cooperating with the front frame 95 . The structure, the structure installed in cooperation with the rear case 96 , the surface attached and fixed with the flexible display screen 90 , the groove for accommodating the battery of the electronic device 300 , and the like. Since the frame 70 is located between the front frame 95 and the rear case 96 , it can also be called a middle frame.

The frame 70 may further be provided with an installation groove 71 and a recess 72, which are used to cooperate with the action mechanism 100, which will be described later. Consistent with the number of the action mechanisms 100 , the number of the installation slots 71 can also be two.

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

Referring to FIGS. 5 and 6 , the action mechanism 100 may mainly include a sliding member 10 , a driving member 20 , a movable member 30 , a fixing member 40 , an elastic member 50 and a swinging member 60 . The sliding member 10 is slidably matched with the driving member 20 , the elastic member 50 is disposed between the fixing member 40 and the movable member 30 , and the swinging member 60 is used to cooperate with the movable member 30 .

Wherein, as shown in FIG. 7 , the sliding member 10 may have a sliding portion 11 and a first limiting portion 13 . For example, the first limiting portion 13 may be a groove 13 provided on the end surface 12 . The sliding portion 11 is the sliding structure of the sliding member 10, which can be a sliding rail, and can be convex in cross-sectional shape, so as to cooperate with the corresponding sliding guide groove to realize stable linear motion; as shown in FIG. 8, The driving member 20 has a chute portion 21 and a rotating arm 22 for rotating around a first rotating shaft 81 (see FIG. 6 ) provided on the hinge body 80 to be in the first state and the second switch between states. The sliding part 11 is slidably matched with the sliding groove part 21 ; the sliding groove part 21 is a sliding structure of the driving member 20 , which can have a sliding guide groove, and the cross-sectional shape of the sliding guide groove is the same as that of the sliding part 11 . The cross-sectional shapes of the two parts are adapted to fit each other, so as to fit each other and achieve stable linear sliding; as shown in FIG. The limiting portion 13 is provided; for example, the second limiting portion 31 may be a protrusion; as shown in FIG. 10 , the fixing member 40 and the movable member 30 are arranged opposite to each other, so as to sandwich the elastic member 50 therebetween. .

Wherein, when the rotating arm 22 is in the first state, for example, when the rotating arm 22 is unfolded relative to the hinge body 80 and is in a horizontal state, the movable member 30 is subjected to the force of the elastic member 50, The first limiting portion 13 and the second limiting portion 31 cooperate to limit and abut the sliding member 10; when the rotating arm 22 is in the second state, for example, the rotating arm 22 is relatively When the hinge body 80 is folded and is in a vertical state, the first limiting portion 13 and the second limiting portion 31 are disengaged from the limiting engagement. The fixing member 40 can be substantially fixed in the supporting plate structure A, for example, can be fixedly connected to the swing member 60 by screws; thus, the fixing member 40 can be compressed and arranged between the fixing member 40 and the movable member 30 The elastic member 50 of the present invention applies a force to the movable member 30 and urges it to move. 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 also means that the driving member 20 rotates to the first state. Herein, the first state corresponds to the supporting plate structures A and A' and the unfolded state of the flexible display screen 90, and the second state may be any other state than the first state, for example, may correspond to the supporting plate structure A and A' and the inwardly folded state of the flexible display screen 90 .

In the action mechanism 100 of the above-mentioned embodiment, the movable member 30 is subjected to the force of the elastic member 50 , so that the first limiting portion 13 and the second limiting portion 31 cooperate to limit and abut against the elastic member 50 . The sliding member 10 can be forced to move laterally for a certain distance; at the same time, because the second limiting portion 31 cooperates with the first limiting portion 13, this cooperation can also limit the sliding member 10. Movement in the vertical direction.

Correspondingly, in the electronic device 300 having the above-mentioned action mechanism 100, when the rotating arm 22 is in the first state, the sliding member 10 is pushed by the movable member 30 to drive the frame 70 to move, The flexible display screen 90 is tightened; when the rotating arm 22 is in the second state, the sliding member 10 is not pressed against the movable member 30, so that the flexible display screen 90 is not pulled, thereby facilitating The bending part in the middle of the flexible display screen 90 is bent to realize the folding of the electronic device 300 . That is to say, since the sliding member 10 can be fixedly connected with the frame 70 of the electronic device 300 and the flexible display screen 90 is fixedly connected with the frame 70, the movement of the sliding member 10 can promote the tension The flexible display screen 90 can make the display screen of the flexible display screen 90 flat, and at the same time, the flexible display screen 90 connected with the sliding member 10 can be kept stable in the longitudinal direction.

Referring to FIG. 1 , when the flexible display screen 90 is fixed on the folding device 200 , the two sides away from the hinge body 80 and the action mechanism 100 can be mainly bonded and fixed, so that the glued The flexible display portion is taut between the two sides where the knot is fixed.

In some embodiments, as shown in FIG. 6 , when the action mechanism 100 includes the swinging member 60 , the fixing member 40 may be fixedly connected to the swinging member 60 by, for example, screws, and the swinging member 60 uses In order to rotate around the second rotating shaft 82, the first rotating shaft 81 and the second rotating shaft 82 are not coaxial. By setting the first rotating shaft 81 and the second rotating shaft 82 to be non-coaxial, it is convenient to make the connected rotating members generate different motion trajectories, so that the first limiting portion 13 and all the rotating members in the second state are realized. The second limiting portion 31 is disengaged from the limiting engagement.

In some embodiments, as shown in FIG. 11 and FIG. 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 to cooperate with the movable member 30 . , so as to guide the movable member 30 to slide on the swing member 60 . For example, as shown in FIG. 9 , a guide portion 34 may be provided on the movable member 30 , so that a part of the guide portion 34 and the slide rail 64 can cooperate with each other to achieve lateral sliding movement of the two, while preventing the relative movement in the longitudinal direction. . This can define the sliding direction of the movable member 30 .

In some embodiments, as shown in FIG. 6 and FIG. 11 , the rocking member 60 includes a first stop surface 61 ; wherein, the rocking member 60 can be fixedly connected with the intermediate member 63 , and the intermediate member 63 is directly connected to the The second rotating shaft 82 provided on the hinge body 80 is rotatably matched, so that the middle piece 63 and the swinging piece 60 can rotate around the second rotating shaft 82 together. In addition, the second rotating shaft 82 can also be connected with a gear 83, and a damping spring 84 can also be provided, so as to realize the driving of the two supporting plate structures A and A' through the respective intermediate pieces 63 through the meshing between the plurality of gears The hinge body 80 rotates synchronously, and the damping spring 84 realizes the two supporting plate structures A and A′ to rotate with a sense of resistance through the respective intermediate pieces 63 . For example, the damping spring 84 can be sleeved on the second rotating shaft 82 and exert an elastic force on the middle piece 63 , so that when the middle piece 63 rotates, a larger friction force is generated, thereby producing a blocking effect.

Correspondingly, as shown in FIG. 9 , the movable member 30 includes a second stop surface 33 . Therefore, as shown in FIGS. 5 and 6 , when the rotating arm 22 is in the first state, the first stop surface 61 leaves the second stop surface 33 ; when the rotating arm 22 is in the first state, the first stop surface 61 leaves the second stop surface 33 ; 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 sliding member 10 . Wherein, it can be set so that when both the rotating arm 22 and the swinging member 60 are in the first state of unfolding, the first stop surface 61 of the swinging member 60 is away from the second stop surface 33 , so that the two do not have a restrictive relationship; and when both the rotating arm 22 and the swinging member 60 are rotated from the unfolded first state to the substantially vertical second state, the first swinging member 60 The stop surface 61 can approach and press the second stop surface 33 , so as to press the movable member 30 away from the sliding member 10 . For example, after the rotating arm 22 is rotated inward from the first state of deployment to a certain angle toward the second state, the movable member 30 is no longer in contact with the sliding member 10, the sliding member 10 is not affected by the spring force, and the frame 70 And the flexible display screen 90 is not affected by the spring force; the angle can be in the range of 20 degrees to 80 degrees, for example, it can be 30 degrees, 45 degrees, 60 degrees and so on. It is easy to understand that since the movable member 30 moves away from the sliding member 10 , it no longer bears against the sliding member 10 .

In some embodiments, as shown in FIG. 6 , the swinging member 60 can be movably connected with the driving member 20 , so that when one of the driving member 20 and the swinging member 60 rotates, the driving member 20 is driven. and the other of the swinging members 60 rotates. For example, as shown in FIG. 8 , the rotating arm 22 of the driving member 20 may have an arc-shaped groove 26 ; as shown in FIG. are not on the same axis; the swinging member 60 has a third rotating shaft 62 , and the third rotating shaft 62 is matched with the arc-shaped groove 26 . Therefore, 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 groove 26 , and the top surface of the swinging member 60 is in contact with the sliding member 10 . The top surfaces are parallel, as shown in Figure 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 groove 26 , and the top surface of the swinging member 60 is in contact with the sliding member 10 . The top faces are no longer parallel. Wherein, since the first rotating shaft 81 and the second rotating shaft 82 are dislocated, when the swinging member 60 and the driving member 20 rotate toward the second state, the two have different rotation axes, and correspondingly The ground has different motion trajectories, thereby causing the swinging member 60 to stop engaging with the movable member 30 and press the movable member 30 to further enter into the recess 72 (see FIG. 4 ) of the frame 70 .

In some embodiments, as shown in FIG. 7 and FIG. 9 , the cooperation of the first limiting portion 13 and the second limiting portion 31 may be the cooperation of grooves and protrusions. For example, when the first limiting portion 13 is a groove, the second limiting portion 31 is a protrusion; further, the cross-section of the groove and the cross-section of the protrusion are both tapered. Through the cooperation of the tapered contour, after the second limiting portion 31 is inserted into the first limiting portion 13 , the sliding member 10 can be urged to move in the lateral direction, and the sliding member 10 can also be restricted in the longitudinal direction. movement. In addition, the first limiting portion 13 may be a groove penetrating from one side of the end surface 12 to the other side; correspondingly, the second limiting portion 31 is in the direction from one side to the other side The cross-sectional shape can be kept the same, that is, they are all conical. Of course, a structure with a rectangular cross-section may be adopted between the second limiting portion 31 and the guiding 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 one end of the sliding portion 11 away from the end surface 12 . For example, the fixing portion 14 can be screwed into the mounting groove 71 of the frame 70 . By fixing the fixing portion 14 to the frame 70 , the sliding member 10 can drive the frame 70 to move, thereby tightening the flexible display screen 90 . In addition, the sliding part 11 can also be fixedly connected with the frame 70 as long as the movement of the sliding part 11 in the sliding groove part 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 to cooperate with the first rotating shaft 81 of the hinge body 80 . The driving member 20 further includes a support plate 24 , the support plate 24 , the chute portion 21 and the rotating arm 22 define a receiving space 25 , and the movable member 30 and the fixing member 40 are located in the receiving space 25 . By arranging the first rotating shaft 81 to cooperate with the rotating shaft hole 23 , the driving member 20 and the sliding member 10 and the frame 70 connected thereto can all rotate around the first rotating shaft 81 .

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

In some embodiments, as shown in FIG. 9 and FIG. 10 , the movable member 30 is provided with a first positioning column 32 , and the fixed member 40 is provided with a second positioning column 41 . As shown in FIG. 6 , the elastic member 50 is a spring, and the 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 that the The movable member 3 exerts a force. The use of springs and positioning posts 32 and 41 can facilitate the installation and positioning of the springs. In other embodiments, the elastic member 50 can also be an elastic rubber, a reed capable of exerting 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 each. By arranging two sets of the first positioning column 32 , the second positioning column 41 and the coil spring, the movement of the movable member 30 can be made stable, and twisting during the movement process can be avoided.

In some embodiments, as shown in FIG. 9 and FIG. 10 , the movable member 30 and the fixed member 40 may also be connected through a sliding fit structure. For example, the movable member 30 may be provided with the guide portion 34 , and the fixed member 40 may be provided with a guide groove 42 , so that a part of the guide portion 34 and the guide groove 42 can be fitted in a lateral direction. Sliding movement while preventing longitudinal relative movement. This can further smoothen the movement of the movable member 30 .

Further, referring to FIG. 4 , in order to facilitate the movement of the movable member 30 relative to the frame 70 , a side wall of the concave portion 72 close to the installation groove 71 may be provided with an arc surface, so as to provide an arcuate surface for the movable member 30 . The second limiting portion 31 of the

To sum up, it can be understood that, in the action mechanism 100 of the above-mentioned embodiment, the first limiting portion and the second limiting portion are caused by the force of the movable member 30 being subjected to the elastic member 50 . The sliding member 10 can be moved laterally for a certain distance by cooperating to limit and abut the slider 10; This fit can also limit the movement of the slider 10 in the longitudinal direction.

Correspondingly, in the electronic device 300 having the above-mentioned action mechanism 100, when the rotating arm 22 is in the first state, the sliding member 10 is pushed by the movable member 30 to drive the frame 70 to move, The flexible display screen 90 is tightened; when the rotating arm 22 is in the second state, the sliding member 10 is not pressed by the movable member 30 . That is, since the sliding member 10 can be fixedly connected with the frame 70 of the electronic device 300 and the flexible display screen 90 is fixedly connected with the frame 70, the movement of the sliding member 10 can promote the electronic device 300 stretches the flexible display screen 90 in the flattened state, so that the display screen of the flexible display screen 90 is flat, and at the same time, the flexible display screen 90 connected with the sliding member 10 can be kept stable in the longitudinal direction, and the electronic device 300 can be kept in the non- In the flattened state, the flexible display screen 90 is not subject to tension, so as to prevent damage from tensile force for a long time, and it is easier to bend during the bending process, or it is easier to form a bending structure in the bending area, such as U-shaped, large Droplet or small droplet.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, The steps may be carried out 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 invention has been The skilled person should understand that it is still possible to modify the technical solutions recorded in the foregoing embodiments, or to perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the implementation of the present invention. scope of technical solutions.

Claims (13)

1. a limit action mechanism, is characterized in that, comprises: a sliding member, the sliding member includes a sliding part and a first limiting part; a driving member, the driving member includes a sliding groove part and a rotating arm, the rotating arm is used for rotating around a first rotating shaft to switch between a first state and a second state, the sliding part slides with the sliding groove part Cooperate; a movable member, the movable member includes a second limiting portion, the second limiting portion is disposed toward the first limiting portion; and a fixed piece, an elastic piece is arranged between the fixed piece and the movable piece; Wherein, when the rotating arm is in the first state, the movable member is subjected to the force of the elastic member, so that the first limiting portion and the second limiting portion cooperate to limit and abut the sliding portion When the rotating arm is in the second state, the first limiting portion and the second limiting portion are disengaged from the limiting fit. 2. The action mechanism according to claim 1, wherein: The action mechanism further includes a swinging member, the fixing member is fixedly connected to the swinging member, and the swinging member is used to rotate around a second rotating shaft, and the first rotating shaft and the second rotating shaft are not coaxial. 3. The action mechanism according to claim 2, wherein: The swinging member is provided with a sliding rail, and the sliding rail cooperates with the movable member for guiding the movable member to slide on the swinging member. 4. The action mechanism according to claim 2, wherein: The swing piece includes a first stop surface; the movable piece includes a second stop surface; When the rotating arm is in the second state, the first stop surface contacts the second stop surface to block the movable member from moving toward the sliding member. 5 . The action mechanism according to claim 2 , wherein the oscillating member is movably connected to the driving member, and when one of the driving member and the oscillating member rotates, the driving member and the oscillating member are driven. 6 . The other one turns. 6. The action mechanism according to claim 1, wherein: The matching of the first limiting portion and the second limiting portion is the matching of the groove and the protrusion. 7. The action mechanism according to claim 6, wherein: The cross section of the groove and the cross section of the protrusion are both tapered. 8. The action mechanism according to claim 1, characterized in that: The sliding member further includes a fixing portion, and the sliding member is fixedly connected with the frame of the electronic device through the fixing portion. 9. The action mechanism according to claim 1, wherein: The rotating arm of the driving member includes a rotating shaft hole, and the rotating shaft hole is used to cooperate with the first rotating shaft; and The driving member further includes a support plate, the support plate, the chute portion and the rotating arm define a accommodating space, and the movable member and the fixing member are located in the accommodating space. 10. The action mechanism according to any one of claims 1-9, characterized in that: The movable member is provided with a first positioning column, and the fixed member is provided with a second positioning column; and The elastic member is a spring, and both ends of the spring are respectively sleeved on the first positioning column and the second positioning column. 11. An electronic device, characterized in that, comprising: A flexible display screen, a frame, and the action mechanism according to any one of claims 1-10, the frame is fixedly connected with the slider, and the flexible display screen is fixedly connected with the frame; and When the rotating arm is in the first state, the sliding member is pushed by the movable member to drive the frame to move, so that the flexible display screen is taut; when the rotating arm is in the second state When the sliding member is not pressed by the movable member. 12. The electronic device according to claim 11, wherein: The electronic device further includes a hinge body, the rotating arm and the swinging member are respectively rotatably connected to the hinge body, and the rotating shaft of the rotating arm and the rotating shaft of the swinging member are not coaxial. 13. The electronic device according to claim 12, wherein: The number of the frames is two, and each of the frames is movably connected to opposite sides of the hinge body respectively.

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