CN114885054B - Folding mechanism and folding electronic equipment - Google Patents

Abstract

The application discloses a folding mechanism and a folding electronic device, belonging to the technical field of electronic products. The folding mechanism is applied in folding electronic equipment, and the folding mechanism includes a base, a folding assembly and a synchronous moving structure, the folding assembly includes at least one swing arm group, and each swing arm group includes swing arms respectively located on both sides of the base , the synchronous mobile structure is slidably installed on the base, and the synchronous mobile structure is respectively sleeved on the swing arm through the matching holes, through the cooperation of the first sliding part on the swing arm and the second sliding part in the matching hole, during the rotation process of the swing arm The middle drives the synchronous moving structure to move relative to the base. The swing arms located on both sides of the base are respectively connected to the two shells in the folding electronic device. Due to the setting of the synchronous moving structure, the swing of the two swing arms is synchronized, so that the swing synchronization of the two shells is more precise. high.

Description

Folding mechanism and folding electronic equipment

technical field

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

Background technique

In recent years, the technological update of electronic devices has become faster and faster. Foldable electronic devices are increasingly favored by users because they can achieve a larger display area and have better portability.

A current foldable electronic device generally includes a flexible screen, a base and two housings, the two housings are respectively rotatably mounted on two sides of the base, and are respectively rotatable relative to the base. The flexible screen is laid on the two casings and the base. When the two casings are turned so that the two casings face each other, the flexible screen is in a folded state. At this time, the foldable electronic device is more portable; when the two casings are turned body so that when the two casings are on the same plane, the flexible screen is in an unfolded state, and the display area of the foldable electronic device at this time is larger.

However, due to the poor rotation synchronization of the two shells of the current foldable electronics, the flexible screen is not uniformly stressed during the folding or unfolding process and is easily damaged.

Contents of the invention

This application provides a folding mechanism and folding electronic equipment. The folding mechanism is applied to folding electronic equipment, which can improve the rotation synchronization of the two housings in the electronic equipment, reduce or even prevent the flexible screen in the folding electronic equipment from being folded or unfolded. Damage caused by uneven stress on the process.

Described technical scheme is as follows:

The first aspect of the present application provides a folding mechanism, including:

a base, the base is extended along the first direction;

The folding assembly includes at least one swing arm group, and each of the swing arm groups includes two swing arms, the two swing arms are respectively located on both sides of the base, and the two swing arms are respectively used to communicate with the electronic The two housings in the device are connected in one-to-one correspondence, the two swing arms respectively have rotation axes, the swing arms can rotate around the rotation axes, and the two rotation axes are respectively parallel to the first direction, Both of the swing arms are provided with a first sliding part extending helically along the rotation axis, the two first sliding parts have opposite helical directions and the same pitch;

a synchronous mobile structure, the synchronous mobile structure is slidably installed on the base, the synchronous mobile structure can move along the first direction relative to the base, and the synchronous mobile structure is relatively to each of the pendulums The arm groups are respectively provided with matching hole groups, each of the matching hole groups includes two matching holes, each of the matching holes is provided with a second sliding part, and each of the swing arms is one-to-one correspondingly installed in each of the matching holes. The rotation axis of the swing arm coincides with the axis of the corresponding matching hole, and the second sliding part is slidingly fitted with the first sliding part.

The folding mechanism provided by this application is applied to folding electronic equipment. The two swing arms in the swing arm group are respectively connected to the two housings in the folding electronic equipment in one-to-one correspondence. During the folding or unfolding process of the folding electronic equipment, at least one The housing rotates relative to the other housing, thereby driving the swing arm connected to the housing to rotate around its own rotation axis. During the rotation of the swing arm, the first sliding part of the swing arm and the corresponding synchronous moving structure The cooperation of the second sliding part in the matching hole drives the synchronous moving structure to move, and while the synchronous moving structure moves, the second sliding part in the matching hole matched with the first sliding part of the other swing arm is also synchronized. Move, so that the cooperation between the other second sliding part and the first sliding part on the other swing arm drives the other swing arm to rotate around its own rotation axis, and drives the other housing to rotate through the other swing arm. On the one hand, since the second sliding parts that cooperate with the two swing arms are all arranged on the same synchronous moving structure, the two second sliding parts can move synchronously, so that the two swing arms rotate synchronously, so that the same swing arm The two swing arms in the group rotate synchronously. Since the two swing arms are connected to the two casings in the folding electronic device in one-to-one correspondence, the two casings can be rotated synchronously through the synchronous moving structure, that is, the two casings are improved. The rotation consistency of each shell during the folding or unfolding process makes the force of the flexible screen in the folding electronic device more uniform during the folding or unfolding process, and reduces or even avoids the force caused by uneven force to a certain extent. Damage to the flexible screen.

In some implementation manners, the first sliding part is a slide groove, and the second sliding part is a slider extending in a helical direction on the inner wall of the fitting hole.

In some implementations, the number of the swing arm groups and the number of the synchronous moving structures are both two, and the two synchronous moving structures and the two swing arm groups are set in one-to-one correspondence, and the two swing arms The groups are arranged at intervals along the moving direction of the synchronous moving structure, and the rotation axes of the swing arms located on the same side of the base are coaxially arranged.

In some implementations, the synchronous movement structure includes a first ring body, a second ring body and a sliding body, the first ring body and the second ring body are respectively connected to the sliding body, the The sliding body is slidably installed on the base, the inner cavity of the first ring body forms one matching hole, and the inner cavity of the second ring body forms another matching hole.

In some implementation manners, the helical directions of the first sliding parts on the two swing arms located on the same side of the base are opposite; the folding mechanism further includes an elastic damping structure located on the two swing arms Between the synchronous moving structures, and the two ends of the elastic damping structure are respectively connected to the two synchronous moving structures.

In some implementations, the number of the elastic damping structures is two, the two elastic damping structures are respectively located on both sides of the base, and the distance between the two elastic damping structures and the base is equal .

In some implementation manners, each of the elastic damping structures includes a spring, and the two ends of the spring are respectively connected to the two synchronous moving structures. On the same side of the base, each of the swing arms is located on two One end between the synchronous moving structures is located in the inner cavity of the corresponding spring, and the spring is arranged coaxially with the corresponding swing arms.

In some implementation manners, the folding mechanism further includes an elastic damping structure, one end of the elastic damping structure is connected to the synchronous moving structure, and the other end is connected to the base.

In some implementations, the base is provided with a guide rail, the synchronous moving structure is provided with a guide groove matching the guide rail, the guide rail extends into the guide groove, and the synchronous mobile structure passes through the guide groove Slidingly installed on the guide rail.

In some implementations, the folding mechanism further includes a fastening structure, the fastening structure includes a limiting part and a connecting part, the limiting part is connected to the base through the connecting part, and the limiting part The portion is located on the side of the guide rail away from the base, and a limiting space is formed between the limiting portion and the guide rail, and part of the synchronous moving structure is located in the limiting space.

In some implementation manners, each of the swing arms includes a rod portion and a mounting portion, the mounting portion is connected to the side of the rod portion, the mounting portion is connected to the corresponding screen support structure, and the rod portion The axis of is the rotation axis, and the first sliding part is arranged on the outer side wall of the rod part.

In some implementation manners, each of the mounting parts is provided with a limiting notch, and the limiting notch is used for the protruding block of the housing to enter.

The second aspect of the present application provides a foldable electronic device. The foldable electronic device includes a first casing, a second casing, a flexible screen, and the folding mechanism according to any of the above technical solutions. The flexible screen covers the On the first shell and the second shell, the first shell and the second shell are respectively located on both sides of the base in the folding mechanism, and the first shell and the second shell are respectively located on both sides of the base in the folding mechanism. The swing arm on the same side of the base is connected, and the second housing is connected to the swing arm on the same side of the base.

The folding electronic device provided by this application is applied with the above-mentioned folding mechanism, and the synchronization between the first casing and the second casing during the folding process is improved through the setting of the above-mentioned folding mechanism, so that the force on the flexible screen during the folding process is stronger. For balance, to reduce or even avoid damage to the flexible screen caused by uneven force to a certain extent.

In some implementation manners, each of the swing arms includes a rod portion and a mounting portion, and each of the mounting portions is provided with a limit gap, and the first housing and the second housing are provided with protrusions, so The protrusions on the first housing extend into the limiting gap of the swing arm on the same side of the base, and the protrusions on the second housing extend into the same side of the base. in the limiting gap of the swing arm.

In some implementations, the mounting part is provided with a first mounting hole, the first mounting hole penetrates the mounting part along the thickness direction, and the limiting notch is provided at a part of the mounting part far away from the rod part In the corner area of one end, the limiting notch runs through the installation part along the first direction, and the first installation hole communicates with the limiting notch; the protrusion extends along the first direction, and the protrusion A second mounting hole is provided on the foldable electronic device; the foldable electronic device also includes a locking member, and the locking member passes through the first mounting hole and the second mounting hole to connect the mounting part and the protrusion .

Description of drawings

Figure 1 is a structural schematic diagram of the connection between the folding mechanism and the housing provided by the embodiment of the present application;

Fig. 2 is a structural schematic diagram of the folding mechanism provided by the embodiment of the present application;

Fig. 3 is a structural schematic view of a synchronously moving structure in a folding mechanism provided by an embodiment of the present application;

Fig. 4 is a second structural schematic diagram of the connection between the folding mechanism and the housing provided by the embodiment of the present application;

Fig. 5 is a schematic structural view of the swing arm in the folding mechanism provided by the embodiment of the present application;

Fig. 6 is a schematic diagram of the assembly of the swing arm group and the synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 7 is a schematic structural view of the base in the folding mechanism provided by the embodiment of the present application;

Fig. 8 is a structural schematic diagram of another viewing angle of the synchronously moving structure in the folding mechanism provided by the embodiment of the present application;

Fig. 9 is a schematic structural diagram of another synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 10 is a schematic diagram of the assembly of the base and the synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 11 is a schematic diagram of the assembly of a swing arm group and a synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 12 is an assembly schematic diagram of another swing arm group and a synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 13 is a schematic diagram of the assembly of two swing arm groups and a synchronous movement structure in the folding mechanism provided by the embodiment of the present application;

Fig. 14 is a schematic diagram of the assembly of two swing arm groups and two synchronous moving structures in the folding mechanism provided by the embodiment of the present application;

Fig. 15 is a schematic diagram of the assembly of the swing arm group, the synchronous movement structure and the elastic damping structure in the folding mechanism provided by the embodiment of the present application;

Fig. 16 is an assembly schematic diagram of an elastic damping structure, a base, a swing arm group and a synchronous moving structure in the folding mechanism provided by the embodiment of the present application;

Fig. 17 is an assembly schematic diagram of another elastic damping structure, base, swing arm group and synchronous moving structure in the folding mechanism provided by the embodiment of the present application;

Fig. 18 is a schematic structural diagram of a foldable electronic device provided by an embodiment of the present application;

Fig. 19 is a schematic diagram of the assembly of the swing arm and the synchronous movement structure in the foldable electronic device provided by the embodiment of the present application;

FIG. 20 is a schematic structural diagram of a second casing in an electronic device provided by an embodiment of the present application.

Among them, the meanings represented by the symbols in the drawings are respectively:

110. First housing; 120. Second housing; 131. Bump; 132. Body; 133. Second mounting hole; 210. Base; 211. Guide rail; 212. Mounting base; 220. Swing arm; 221 , rod part; 222, installation part; 223, first sliding part; 224, first installation hole; 225, limit gap; 230, synchronous moving structure; 231, first ring body; 232, second ring body; 233 , sliding body; 234, guide groove; 235, matching hole; 236, second sliding part; 240, fastening structure; 250, elastic damping structure; W1, reference surface; A, rotation axis.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manner of the present application will be further described in detail below in conjunction with the accompanying drawings.

It should be understood that the "plurality" mentioned in this application means two or more. In the description of this application, unless otherwise specified, "/" means or means, for example, a/b can mean a or b; "and/or" in this article is just a description of the relationship between associated objects, It means that there can be three kinds of relationships, for example, a and/or b can mean: a exists alone, a and b exist simultaneously, and b exists alone. In addition, in order to clearly describe the technical solution of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order, and words such as "first" and "second" do not necessarily limit the difference.

Fig. 1 is a folding mechanism provided by an embodiment of the present application. The folding mechanism is used in folding electronic devices. Specifically, folding electronic devices can be foldable electronic devices such as folding mobile phones, folding tablet computers, or folding electronic papers with display functions.

The folding mechanism provided in this embodiment includes: a base 210, a folding assembly and a synchronous moving structure 230, as shown in Figure 1 and Figure 2, the direction indicated by the arrows marked with up and down is the first direction, the length direction of the base 210 That is, the first direction, that is, the base 210 is extended along the first direction. The synchronous moving structure 230 is slidably installed on the base 210 , the synchronous moving structure 230 can move relative to the base 210 , and the moving direction of the synchronous moving structure 230 is a first direction. Based on the base 210, the base 210 includes upper and lower ends, left sides (the left and right directions are the directions indicated by the left and right arrows in Figure 1 and Figure 2) and front and rear sides (the front and rear directions are the base The thickness direction of 210, that is, the direction indicated by the front and rear arrows in FIG. 1, and the front and rear direction in FIG. 2 is the direction perpendicular to the paper).

The folding assembly includes at least one swing arm group, each swing arm group includes two swing arms 220, the two swing arms 220 are respectively located on both sides of the base 210, and the two swing arms 220 are provided with a first sliding part 223, The first sliding portion 223 is helical and extends along the outer wall of the swing arm 220 . The rotation directions of the two first sliding parts 223 are opposite, that is to say, if one of the first sliding parts 223 is left-handed, the other first sliding part 223 is right-handed. During the rotation of the swing arm 220, the swing arm 220 rotates around an axis, which is called the rotation axis A of the swing arm 220. A plurality of swing arms 220 are provided, and the rotation axes A of the plurality of swing arms 220 on the same side of the base 210 coincide. As shown in Figure 2, the number of swing arm groups is two, and two swing arms 220 are respectively arranged on the left and right sides of the base 210, and the rotation axis A of each swing arm 220 is parallel to the first direction (the up and down direction), the rotation axes A of the two swing arms 220 set on the left side of the base 210 coincide (so only one rotation axis A is shown on the left side of the base 210 in FIG. 2 ), and on the right side of the base 210 The rotation axes A of the two swing arms 220 are coincident (so only one rotation axis A is shown on the right side of the base 210 in FIG. 2 ).

As shown in FIG. 2 , each swing arm 220 is provided with a first sliding portion 223 , and each first sliding portion 223 is spirally wound on the corresponding swing arm 220 along the rotation axis A direction of the corresponding swing arm 220 .

In a feasible implementation manner, the first sliding parts 223 on the two swing arms 220 have opposite rotation directions and the same pitch, that is to say, if the two swing arms 220 are located on the left and right sides of the base 210 respectively, The rotation axes A of the two swing arms 220 are parallel, the first sliding part 223 on one swing arm 220 is left-handed, and the first sliding part 223 on the other swing arm 220 is right-handed. Since the pitches of the two first sliding parts 223 are the same, when the two swing arms 220 swing at the same angle, the two first sliding parts 223 can drive the synchronous moving structure 230 to move the same distance, or in other words, the synchronous moving structure 230 can move A certain distance makes the two swing arms 220 rotate in different directions by the same angle.

Exemplarily, the number of swing arm groups shown in FIG. 2 is two, and the number of synchronous moving structures 230 is also two. The swing arm groups respectively include two swing arms 220 , the rotation axes A of the swing arms 220 located on the same side of the base 210 are arranged coaxially, and the two swing arms 220 located in the same group are symmetrically distributed relative to the base 210 . The axial length of each swing arm 220 is less than half of the length of the base 210 along the first direction. In the swing arm group located below, the first sliding part 223 provided on the swing arm 220 on the left side of the base 210 is right-handed, and the first sliding part 223 provided on the swing arm 220 on the right side of the base 210 223 is left-handed. In the upper swing arm group, the first sliding part 223 provided on the swing arm 220 on the left side of the base 210 is left-handed, and the first sliding part 223 provided on the swing arm 220 on the right side of the base 210 is right-handed. spin.

In a feasible implementation manner, the pitch, number of threads and tooth shape of each swing arm 220 in the folding mechanism are all the same, so that it is convenient to improve the structural similarity of each swing arm 220 and facilitate manufacturing.

The synchronous moving structure 230 is slidably installed on the base 210 , and the synchronous moving structure 230 can move in a first direction relative to the base 210 . The synchronous moving structure 230 is respectively provided with matching hole groups corresponding to each swing arm group. As shown in Figure 3, each matching hole group includes two matching holes 235, and each matching hole 235 is provided with a second sliding part 236, and the synchronous moving structure 230 is sleeved on the corresponding pendulum through each matching hole 235 one by one. For each swing arm 220 in the arm set, the second sliding portion 236 is slidably mounted on the first sliding portion 223 of the corresponding swing arm 220 . The axis of the matching hole 235 coincides with the rotation axis A of the swing arm 220 sleeved therein. One of the first sliding portion 223 and the second sliding portion 236 is a sliding block, and the other is a slide groove. That is to say, when the first sliding part 223 provided on the swing arm 220 is a slider, the second sliding part 236 provided in the matching hole 235 on the synchronous movement structure 230 is a chute, and the synchronous movement structure will When the 230 is sleeved on the swing arm 220 through the matching hole 235, the slider extends into the chute. Or, when the first sliding part 223 provided on the swing arm 220 is a chute, the second sliding part 236 provided in the fitting hole 235 on the synchronous moving structure 230 is a slider, and the synchronous moving structure 230 is matched When the hole 235 is sleeved on the swing arm 220, the slider extends into the chute. Due to the cooperation between the first sliding part 223 and the second sliding part 236, the swing arm 220 drives the synchronous moving structure 230 to move along the first direction when rotating, and the synchronous moving structure 230 drives the swing arm 220 when moving along the first direction. turn. Since the two swing arms 220 in the same swing arm group are all connected with the same synchronous moving structure 230, any one of the swing arms 220 can drive the synchronous moving structure 230 to move during the rotation process, and the synchronous moving structure 230 Drive the other swing arm 220 to rotate. Since the first sliding parts 223 on the two swing arms 220 in the same swing arm group rotate in opposite directions, as the synchronous movement structure 230 moves, the two swing arms 220 rotate in opposite directions. The arm 220 rotates clockwise, and the other swing arm 220 rotates counterclockwise.

When the first sliding part 223 is a slide groove and the second sliding part 236 is a slider, the slider is disposed on the inner wall of the matching hole 235 . In a possible arrangement, the slider is cylindrical, or the end of the slider away from the inner wall of the matching hole 235 is spherical, or the slider can also be ball-shaped, so that the slider can be inserted into the chute , and move along the spiral chute. In another possible implementation, as shown in FIG. 3 , the slider is specifically an arc-shaped structure extending along the helical direction on the inner wall of the matching hole 235 . Such arrangement can ensure that the slider can move relative to the chute on the one hand. On the other hand, the contact area between the slider and the chute can be made larger, and the stability is higher when the slider moves relative to the chute.

Similarly, when the first sliding part 223 is a slider and the second sliding part 236 is a sliding groove, the sliding groove is arranged on the inner wall of the fitting hole 235, and the sliding groove is extended along the inner wall of the fitting hole 235, so that the sliding groove and Sliders can cooperate to achieve relative movement.

In a specific embodiment, the section of the slider is triangular, and the section of the inner chamber of the chute is triangular. It is worth noting that the section here refers to the radial section of the swing arm 220. It can be understood that the swing The radial direction of the arm is also the radial direction of the rod portion 221 . For example, in FIG. 3 , the second sliding portion 236 is a slider, and the cross section of the slider is triangular. In this embodiment, since the cross-section of the inner chamber of the chute is triangular, that is, in the direction from the opening of the chute to the bottom of the chute, both side walls are slopes inclined toward the middle, and the inner wall of the chute forms a The slope of the slider plays a guiding role for the slider when the slider extends into the chute. Moreover, when the slider moves along the chute, the inner wall of the chute plays a better role in limiting the slider, thereby improving the stability of the movement of the slider.

When the quantity of the swing arm group is one, the quantity of the synchronous moving structure 230 is one, and a matching hole group is provided on the synchronous moving structure 230, and a matching hole group includes two matching holes 235, and the two matching holes 235 are connected with two matching holes. The two swing arms 220 are arranged in one-to-one correspondence, and the distance between the axes of the two matching holes 235 is equal to the distance between the axes of the two swing arms 220, that is, the synchronous moving structure 230 can be synchronized through the two matching holes 235. Set on two swing arms 220 .

When the number of swing arm groups is multiple, the number of synchronous moving structures 230 is less than or equal to the number of swing arm groups.

When the number of synchronously moving structures 230 is the same as the number of swing arm groups, one swing arm group is correspondingly provided with a synchronously moving structure 230, as shown in Figure 3, a synchronously moving structure 230 is provided with a matching hole group, that is A synchronous moving structure 230 includes a total of two matching holes 235 , so as to be respectively sleeved on the two swing arms 220 through the two matching holes 235 .

When the number of synchronous moving structures 230 is less than the number of swing arm groups, at least some of the synchronous moving structures 230 are provided with more than one matching hole group. For example, when the number of swing arm groups is three, the number of synchronous moving structures 230 can be one or two. When the number of the synchronous moving structure 230 is one, the synchronous moving structure 230 is provided with three matching hole groups, and one matching hole group is correspondingly sleeved on one swing arm group. When the number of synchronous moving structures 230 is two, one of the synchronous moving structures 230 is provided with a matching hole group, which is correspondingly sleeved on a swing arm group, and the other synchronous moving structure 230 is provided with two matching hole groups , respectively sleeved on the two swing arm groups through two matching hole groups.

In a feasible implementation manner, as shown in FIG. 3 , the synchronous moving structure 230 includes a first ring body 231, a second ring body 232 and a sliding body 233, and the first ring body 231 and the second ring body 232 are respectively arranged on On the sliding body 233, the cavity of the first ring body 231 forms a matching hole 235, and the cavity of the second ring body 232 forms another matching hole 235, and the matching hole 235 in the first ring body 231 and the second ring body The matching holes 235 in 232 form a matching hole group. The sliding body 233 is slidably installed on the base 210 . The first ring body 231, the second ring body 232 and the sliding body 233 can be an integral structure manufactured by an integral molding process, or the first ring body 231, the second ring body 232 and the sliding body 233 can be manufactured separately , and then the first ring body 231 and the second ring body 232 are respectively fixedly connected to the sliding body 233 to form an integrated assembly structure. Optionally, the number of the first ring body 231 and the second ring body 232 is one, that is, a matching hole group is provided on the synchronous moving structure 230; optionally, the number of the first ring body 231 and the second ring body 232 The numbers are equal and multiple, that is, multiple matching hole groups are provided on the synchronous moving structure 230 .

Optionally, the outer diameter of the first ring body 231 is equal to the outer diameter of the second ring body 232 , and the thickness of the sliding body 233 is smaller than the outer diameter of the first ring body 231 .

The folding mechanism provided in this embodiment is applied to folding electronic equipment, and the two swing arms 220 in each swing arm group are respectively connected to the two housings in the folding electronic equipment in a one-to-one correspondence. Specifically, the housing includes a middle frame, and the swing arm 220 can be connected with the middle frame. During the folding or unfolding process of the foldable electronic device, at least one housing rotates relative to the other housing, thereby driving the swing arm 220 connected to the housing to rotate. When one of the housings rotates, the housing drives the other housing to rotate synchronously through the folding mechanism. During the rotation of one of the casings, the swing arm 220 connected to the casing rotates around its own rotation axis A. During the rotation of the swing arm 220, it drives the synchronous moving structure 230 to move, and the synchronous moving structure 230 drives the other The swing arm 220 rotates to drive the other casing to rotate through the other swing arm 220 . On the one hand, since the second sliding parts 236 that cooperate with the two swing arms 220 are all arranged on the same synchronous moving structure 230, the two second sliding parts 236 can move synchronously along the first direction, so that the same swing arm The two swing arms 220 in the group rotate in opposite directions synchronously. Since the two swing arms 220 are respectively connected to the two housings of the folding electronic device in one-to-one correspondence, the synchronous moving structure 230 can drive the two housings to rotate synchronously and reversely, thereby realizing the folding or unfolding process of the folding electronic device. The setting of the folding mechanism improves the rotation consistency of the two shells during the folding or unfolding process, so that the force on the flexible screen in the folding electronic device is more uniform during the folding or unfolding process, and to a certain extent reduces or even avoids Damage to the flexible screen caused by uneven force. On the other hand, since the synchronous moving structures 230 are sleeved on the corresponding swing arms 220 respectively, the synchronous moving structures 230 have a certain degree of limiting effect on the swing arms 220, that is, the setting positions of the synchronous moving structures 230 limit the position of the swing arms. The installation position of 220 is convenient to control the assembly accuracy, so that the consistency of the shortest distance between the swing arm 220 on both sides of the base 210 and the base 210 is higher, which is further conducive to improving the synchronization of the two housings.

It is worth noting that the two housings are respectively located on both sides of the base 210, and the two housings are distributed symmetrically with respect to a reference plane. In FIG. 4, the reference plane is the reference plane W1, and the housing and the swing arm The end connected to 220 is called the proximal end, the end of the housing away from the swing arm 220 is called the distal end, and the proximal end and the far end are two opposite ends. During the rotation of the two housings, the distance between the distal ends of the two housings changes, and the state when the distance between the distal ends of the two housings is at the maximum value is called the unfolded state, and the two housings The state in which the distance between the distal ends of the bodies is at a minimum is called the folded state. The two shells in the folded state turn outwards and become the expanded state, and the two shells in the unfolded state turn inwards and become the folded state. Turning the housing on the left side inward is clockwise rotation, and turning outward is anticlockwise rotation. Turning the housing on the right side inward is anticlockwise rotation, and turning outward is clockwise rotation.

For ease of description, the two housings in the foldable electronic device are referred to as the first housing 110 and the second housing 120 respectively. As shown in FIG. 4 , in a swing arm group, a swing arm 220 and the first housing The body 110 is connected, and the other swing arm 220 is connected with the second housing 120. When the folding electronic device is switched from the unfolded state to the folded state, at least one of the first housing 110 and the second housing 120 is turned inward, and Driven by the folding mechanism, the first casing 110 and the second casing 120 are turned inward synchronously, thereby driving the swing arms 220 on both sides of the base 210 to turn inward respectively; When switching, at least one of the first casing 110 and the second casing 120 is turned outwards, and driven by the folding mechanism, the first casing 110 and the second casing 120 are turned outwards synchronously.

In a feasible implementation manner, the swing arm 220 is directly connected to the housing, or, in another feasible implementation manner, the swing arm 220 is connected to the housing through a connecting plate. Exemplarily, the folding mechanism further includes two connecting plates, the two connecting plates are arranged on both sides of the base 210 respectively, the connecting plate on one side of the base 210 is connected to each swing arm 220 on the same side, and the connecting plates It is connected to the housing on the same side, so that all the swing arms 220 on the same side are connected to the housing through the connecting plate.

When the swing arm 220 is directly connected to the housing, in a possible arrangement, each swing arm 220 includes a rod-shaped structure, the first sliding part 223 is arranged on the outer surface of the rod-shaped structure, and the rod-shaped structure The central axis of the swing arm 220 is the rotation axis A of the swing arm 220, and the side of the rod-shaped structure is used to connect with the housing.

In another possible arrangement, for example, as shown in FIG. 5 , each swing arm 220 includes a round rod-shaped rod portion 221 and a mounting portion 222 for connecting with the housing of the foldable electronic device. , the mounting part 222 is connected to the side of the rod part 221, the axial direction of the rod part 221 is the first direction, or in other words, the central axis of the rod part 221 is the rotation axis A of the swing arm 220, and the first sliding part 223 is on the rod The outer wall of the portion 221 extends from one end to the other end in a helical shape along the central axis of the rod portion 221 .

In an optional embodiment, as shown in FIG. 4 and FIG. 5 , the housing connected to the swing arm 220 has a protrusion 131, and each mounting portion 222 is provided with a limit notch 225, and the limit notch 225 is used for housing The bump 131 of the body extends in. The protrusion 131 extends into the limit notch 225 of the installation part 222, and the outer surface of the protrusion 131 is in contact with the inner wall of the limit notch 225. The setting of the protrusion 131 and the limit notch 225 increases the distance between the installation part 222 and the housing. The contact area between them improves the connection stability between the installation part 222 and the housing.

In a specific arrangement, as shown in Figure 5 and Figure 6, a first installation hole 224 can be provided on the installation part 222, and the first installation hole 224 is opposite to the second installation hole on the protrusion 131 of the housing , the first mounting hole 224 and the second mounting hole are used for bolts to pass through to securely connect the mounting portion 222 with the housing. In this arrangement, in the process of connecting the installation part 222 to the housing, the protrusion 131 is first inserted into the limit notch 225, so that the installation part 222 can be realized through the cooperation of the protrusion 131 and the limit notch 225. The initial positioning with the housing is to align the first installation hole 224 with the second installation hole, so as to facilitate the passage of bolts, and facilitate the fast and convenient connection between the installation part 222 and the housing.

In FIG. 5 , one side of the installation part 222 is connected to the rod part 221, and the limit notch 225 is arranged on the edge area of the opposite side, and the limit notch runs through the installation part 222 along the first direction, and the limit notch 225 is in the The depth of the installation part 222 in the thickness direction (or in other words, the front-back direction of the installation part 222 ) is smaller than the thickness of the installation part 222 . The first mounting hole 224 penetrates the mounting portion 222 along the thickness direction of the mounting portion 222 , and the first mounting hole communicates with the limiting notch 225 . The shape of the inner wall of the limiting notch 225 is adapted to the shape of the outer surface of the protrusion 131 on the casing. For example, the outer wall of the protrusion 131 is arc-shaped, and the inner wall of the limiting notch 225 is arc-shaped. In FIG. 5 , the area defined between two relatively vertical planes on the mounting part 222 is the limiting notch 225 , which is in the shape of a cubic cavity. This limiting notch 225 is adapted to the housing The bump 131 is in the shape of a cube.

The synchronous moving structure 230 is slidably fitted on the base 210. Optionally, the base 210 may be provided with a groove penetrating through the base 210 along the first direction, and the synchronous moving structure 230 is provided with a protrusion, and the protrusion extends into the groove body, and can move along the groove body, so that the synchronous moving structure 230 can move relative to the base 210 . Or, a guide ring can be set on the base 210, the axial direction of the guide ring is the first direction, a guide rod is set on the synchronous movement structure 230, and the guide rod passes through the guide ring, so that the synchronous movement structure 230 can move relative to the base. 210 moves. Or, referring to Fig. 7, the base 210 is provided with a guide rail 211 extending along the first direction, the synchronous moving structure 230 is provided with a guide groove 234 matching with the guide rail 211, the guide rail 211 extends into the guide groove 234, and the synchronous mobile structure 230 is guided by The slot 234 is slidably installed on the guide rail 211 .

In a feasible implementation manner, the guide groove 234 has two relatively inclined inner walls, so that the width of the bottom surface of the guide groove 234 is greater than the width of the opening of the guide groove 234, that is to say, the guide groove 234 is a closing structure, Its opening width is smaller than its lumen width. For example, as shown in FIG. 8 , the cross section of the guide groove 234 is an inverted trapezoid, and the cross section of at least part of the structure of the guide rail 211 matches the cross section of the guide groove 234 . Alternatively, as shown in FIG. 9 , the section of the guide groove 234 is T-shaped, and correspondingly, there is at least a T-shaped protrusion structure on the top of the guide rail 211 to extend into the guide groove 234 .

In some implementations, as shown in FIG. 10 , the folding mechanism further includes a fastening structure 240, the fastening structure 240 includes a limiting part and a connecting part, the limiting part is connected with the base 210 through the connecting part, and the limiting part is located on the guide rail 211 is away from the side of the base 210 , and a limiting space is formed between the limiting portion and the guide rail 211 , and part of the structure of the synchronous moving structure 230 is located in the limiting space. The limit space limits the position of the synchronous moving structure 230 to prevent the synchronous moving structure 230 from detaching from the guide rail 211 and improve the stability of the synchronous moving structure 230 moving relative to the guide rail 211 . In FIG. 10 , the sliding body 233 of the synchronous movement structure is located in the limiting space, and the first ring body 231 and the second ring body 232 are respectively located on both sides of the guide rail 211 and on both sides of the limiting space.

In Fig. 10, the limiting part is a plate-shaped structure extending along the first direction, the connecting part is connected to the upper and lower ends of the limiting part, the limiting part is located above the guide rail 211, and is spaced apart from the guide rail 211, one connecting part One end is connected to the upper end of the limiting part, the other end is connected to the area above the guide rail 211 on the base 210, one end of the other connecting part is connected to the lower end of the limiting part, and the other end is connected to the area below the guide rail 211 on the base 210. Area connections. The sliding body 233 is located below the limiting part, the limiting part plays a role of limiting the sliding body 233 , and the limiting part plays a certain protective role for the sliding body 233 . Specifically, the connection portion above the guide rail 211 may be connected to or in contact with the top surface of the guide rail 211 , and the connection portion located below the guide rail 211 may be connected to or in contact with the bottom surface of the guide rail 211 . In this way, through the two connecting parts located on the upper and lower sides of the guide rail 211, the synchronous moving structure 230 can be prevented from detaching from the guide rail 211 after moving in the first direction, and the setting of the limit space formed between the limit part and the guide rail 211 facilitates synchronization The moving structure 230 moves relative to the guide rail 211, and the limit part can protect the sliding body 233 of the synchronous moving structure 230, preventing other structures located on the front side of the sliding body 233 from affecting the sliding of the electronic device during folding or unfolding. The movement of the transplant body 233 .

In this embodiment, the number of swing arm groups can be one or more.

When there is one swing arm group, there is one synchronous moving structure 230 .

In one embodiment, there is one swing arm group, and one swing arm 220 includes one rod portion 221 and at least one mounting portion 222 . In a specific embodiment, the number of swing arm groups is one, and the number of installation parts 222 is one. The installation part 222 can be connected to the side of the rod part 221 relatively close to the axial middle area, and the first sliding part 223 is composed of One end of the rod part 221 is extended toward the middle; or, the first sliding part 223 is arranged at the middle part of the rod part 221 , and the mounting part 222 is connected to the end of the rod part 221 . The mounting portions 222 on the two rods 221 are respectively located on different sides, the mounting portion 222 on the swing arm 220 on the left side of the base 210 is connected to the side of the rod 221 and extends to the left, and is located on the right side of the base 210 The installation part 222 on the swing arm 220 is connected to the side of the rod part 221 and extends to the right side.

The two swing arms 220 in the swing arm group can be distributed asymmetrically with respect to the base 210. For example, as shown in FIG. The swing arm 220 on the right side of the seat 210 is located at a relatively upper position, and the rotation directions of the first sliding parts 223 on the two swing arms 220 are opposite. The two swing arms 220 are correspondingly provided with a synchronous moving structure 230, the first ring body 231 and the second ring body 232 are distributed asymmetrically with respect to the base 210, the first ring body 231 is located on the lower left side of the sliding body 233, the second ring body 231 The ring body 232 is located on the upper right side of the sliding body 233 . In this embodiment, since the first ring body 231 and the second ring body 232 are distributed asymmetrically with respect to the base 210, in order to connect the first ring body 231 and the second ring body 232, the sliding body 233 is arranged along the first The length in the direction is relatively longer, so that the sliding assembly contact area between the sliding body 233 and the base 210 is relatively larger, so that the stability of the sliding body 233 when moving relative to the base 210 is stronger.

In another embodiment, as shown in FIG. 12 , the number of swing arm groups is one, the number of mounting parts 222 on one rod part 221 is two, and the first sliding part 223 can be set in the middle of the rod part 221, The two mounting portions 222 are respectively disposed on two ends of the rod portion 221 , and the mounting portions 222 connected to the same rod portion 221 extend in the same direction. For example, as shown in Figure 12, the two ends of the rod part 221 located on the left side of the base 210 are respectively provided with mounting parts 222, and the two mounting parts 222 are all extended to the left, and the right side of each mounting part 222 and the rod The two ends of the rod part 221 on the right side of the base 210 are respectively provided with mounting parts 222, and the two mounting parts 222 are extended to the right, and the left side of each mounting part 222 is connected with the rod part 221. Certainly, more mounting portions 222 may be provided in one swing arm 220 , and the multiple mounting portions 222 are distributed on the rod portion 221 at intervals along the axial direction of the rod portion 221 . The number of mounting portions 222 is related to the length of the rod portion 221 . As shown in Figure 12, when the number of swing arm groups is one and the number of synchronous moving structures 230 is one, the number of the first ring body 231 and the second ring body 232 in the synchronous moving structure 230 is one, and the number of the first ring body 230 is one. The body 231 is sleeved on one swing arm 220 , and the second ring body 232 is sleeved on the other swing arm 220 . When the two swing arms 220 in the swing arm group are distributed symmetrically with respect to the base 210 respectively, the sliding body 233 can be a bar-shaped structure, and the length direction of the sliding body 233 is perpendicular to the length direction of the base 210. 233 on both sides of the base 210 are respectively connected to the first ring body 231 and the second ring body 232, so that the first ring body 231 and the second ring body 232 are respectively located on both sides of the base 210, so as to sleeve the Two swing arms 220 on both sides of the base 210 . In this embodiment, in the assembly process, firstly, the synchronous moving structure 230 is sleeved on the rod part 221 to complete the assembly of the synchronous moving structure 230 and the rod part 221, and then the mounting part 222 is installed on both ends of the rod part 221 , to complete the assembly of the swing arm 220 and the synchronous moving structure 230 . Since installation parts 222 are provided at both ends of the rod part 221, and the synchronous movement structure 230 is sleeved between the two installation parts 222, the two installation parts 222 play a limiting role on both sides of the synchronous movement structure 230 , which defines the maximum moving distance of the synchronous moving structure 230 .

When the number of swing arm groups is multiple, the number of synchronous mobile structures 230 can be equal to the number of swing arm groups, that is, one swing arm group is correspondingly connected with a synchronous mobile structure 230, or the number of synchronous mobile structures 230 can be Less than the number of swing arm groups, that is, two or more swing arm groups can be connected with the same synchronous moving structure.

In one embodiment, the number of swing arm groups is two, and the number of synchronous moving structures 230 is one, that is, the number of synchronous moving structures 230 is smaller than the number of swing arm groups. As shown in Figure 13, the number of swing arm groups is two, each swing arm group includes two swing arms 220, the rods 221 located on the same side of the base 210 are arranged coaxially, and the two rods in the same group 221 are distributed symmetrically with respect to the base 210 . The axial length of each rod portion 221 is less than half of the length of the base 210 along the first direction. The first sliding parts 223 provided on the two rod parts 221 on the left side of the base 210 are all right-handed, and the first sliding parts 223 provided on the two rod parts 221 on the right side of the base 210 are all right-handed. For left-handed. When the number of swing arm groups is two, in a possible arrangement, as shown in Figure 13, the number of synchronous moving structure 230 is one, and two matching hole groups are arranged on the synchronous moving structure 230, each The matching hole groups include two matching holes 235 respectively. The synchronous moving structure 230 is sleeved on the two swing arms 220 of one swing arm group through one of the matching hole groups, and the synchronous moving structure 230 is sleeved on the other through the other matching hole group. on the two swing arms 220 of one swing arm group. The first sliding parts 223 on the swing arms 220 on the same side of the base 210 rotate in the same direction, that is, when the swing arms 220 on the same side of the base 210 rotate in the same direction, they drive the synchronous moving structure 230 to move. Exemplarily, as shown in FIG. 13 , there are two first ring bodies 231 and two second ring bodies 232 in the synchronous moving structure 230 , and one of the first ring bodies 231 is sleeved on one of a swing arm group. On the swing arm 220 , one of the second ring bodies 232 is sleeved on the other swing arm 220 of a swing arm set. Another first ring body 231 is sleeved on one swing arm 220 of another swing arm set, and another second ring body 232 is sleeved on another swing arm 220 of another swing arm set. In a feasible implementation manner, when the two swing arms 220 in each swing arm group are distributed symmetrically with respect to the base 210, as shown in FIG. Two parallel beams arranged at intervals, and a longitudinal beam extending along the first direction, the two ends of the longitudinal beam are respectively connected to the middle parts of the two beams, and the two ends of the two beams are respectively connected with a first ring body 231 and a The second ring body 232 . In the above embodiment, since the sliding body 233 is an I-shaped structure, it slides relative to the base 210 through the longitudinal beam, and the length of the longitudinal beam in the first direction is relatively long, so that the sliding body 233 and the base The sliding assembly contact area of the seat 210 is relatively larger, so that the stability of the sliding body 233 when moving relative to the base 210 is stronger.

In another embodiment, the number of swing arm groups is two, and the number of synchronous moving structures 230 is also two, that is to say, the number of swing arm groups is the same as the number of synchronous moving structures 230 . As shown in Figure 14, the folding assembly includes two swing arm groups, one swing arm group includes two swing arms 220, wherein the two swing arms 220 of one swing arm group are respectively located on the left and right sides of the upper end of the base 210, and the other The two swing arms 220 of a swing arm group are respectively located on the left and right sides of the lower end of the base 210, and each swing arm 220 includes a rod portion 221 and a mounting portion 222, the rod portion 221 is specifically a cylindrical rod, and the rod portion 221 The outer wall is spirally provided with a first sliding part 223 from top to bottom, and the first sliding part 223 is specifically a slide groove. The pitch, number of threads and tooth shape of the first sliding portion 223 of each swing arm 220 are consistent. The mounting portion 222 is a plate-shaped structure, and one side of the mounting portion 222 is connected to a side surface of the rod portion 221 . Two first mounting holes 224 are disposed on the mounting portion 222 at intervals. In FIG. 14 , the first sliding part 223 of the swing arm 220 on the upper left side of the base 210 is left-handed, and the mounting part 222 is mounted on the upper left side of the rod part 221 . The first sliding part 223 of the swing arm 220 on the upper right side of the base 210 is right-handed, and the mounting part 222 is mounted on the upper right side of the rod part 221 . The first sliding part 223 of the swing arm 220 located at the lower left side of the base 210 is right-handed, and the mounting part 222 is mounted on the left side of the lower end of the rod part 221 . The first sliding part 223 of the swing arm 220 located at the lower right side of the base 210 is left-handed, and the mounting part 222 is mounted on the right side of the lower end of the rod part 221 . The two mounting parts 222 of the two swing arms 220 on the left side of the base 210 are connected to the upper area and the lower area of the right edge of the first housing 110 respectively, and the two swing arms 220 on the right side of the base 210 The two installation parts 222 are respectively connected to the upper area and the lower area of the left edge of the second housing 120 . In the above-mentioned embodiment, the connection between the mounting part 222 and the rod part 221 does not interfere with the assembly of the synchronous moving structure 230, so the swing arm 220 and the synchronous moving structure 230 can be manufactured separately. During the assembly process, the swing arm 220 The installation of the swing arm 220 can be completed by inserting the rod portion 221 into the matching hole 235 of the synchronous moving structure 230, which simplifies the assembly process. The rod part 221 and the mounting part 222 of the swing arm 220 can be manufactured in one-piece molding process during the manufacturing process, or the rod part 221 and the mounting part 222 can be independently manufactured and then connected into an integrated structure during the manufacturing process.

Each synchronous moving structure 230 is respectively provided with a matching hole group, and a synchronous moving structure 230 is sleeved on the two swing arms 220 of a swing arm group through the matching hole set provided on it, and the other synchronous moving structure 230 passes through The set of matching holes provided thereon is sleeved on the two swing arms 220 of another swing arm set. In this arrangement, the rotation directions of the first sliding parts 223 on the swing arms 220 on the same side of the base 210 may be the same or opposite. When the rotation directions of the first sliding parts 223 on the swing arms 220 on the same side of the base 210 are the same, when the swing arms 220 on the same side of the base 210 rotate in the same direction, each swing arm 220 drives its corresponding The set synchronous moving structures 230 move in the same direction. When the rotation directions of the first sliding parts 223 on the swing arms 220 on the same side of the base 210 are opposite, when the swing arms 220 on the same side of the base 210 rotate in the same direction, each swing arm 220 drives its corresponding The set synchronous moving structures 230 move in opposite directions. In FIG. 14 , there are two synchronous moving structures 230, and each synchronous moving structure 230 includes a first ring body 231, a second ring body 232 and a sliding body 233, and the sliding body 233 is arranged through the first direction. There is a guide groove 234 , the first ring body 231 and the second ring body 232 are respectively connected to the left and right sides of the sliding body 233 , and the first ring body 231 and the second ring body 232 are respectively located at the left and right sides of the base 210 . The back surface of the sliding body 233 is provided with a guiding groove 234 , and the sliding body 233 is slidably assembled on the guide rail 211 through the guiding groove 234 . The inner cavity of the first ring body 231 and the inner cavity of the second ring body 232 respectively form a matching hole 235 , and the inner wall of the matching hole 235 is provided with a second sliding part 236 along a spiral shape, and the second sliding part 236 is a slider. The two synchronous mobile structures 230 are slidably assembled on the guide rail 211 through the guide grooves 234 respectively, and the two synchronous mobile structures 230 are arranged at intervals up and down. The ring bodies 232 are all located on the right side of the base 210, the first ring body 231 in the upper synchronous movement structure 230 is sleeved on the rod portion 221 of the swing arm 220 on the upper left side, and the second ring body 232 is sleeved On the rod portion 221 of the swing arm 220 on the upper right side, the first ring body 231 in the synchronous moving structure 230 located below is sleeved on the rod portion 221 of the swing arm 220 located on the lower left side, and the second ring body 232 is sleeved The rod part 221 of the swing arm 220 located on the lower right side, the second sliding part 236 in the first ring body 231 extends into the first sliding part 223 of the corresponding rod part 221, and the second sliding part 236 in the second ring body 232 The second sliding portion 236 protrudes into the first sliding portion 223 of the corresponding rod portion 221 .

As shown in FIG. 15, in an optional implementation manner, the folding mechanism further includes an elastic damping structure 250, the elastic damping structure 250 is connected with the synchronous moving structure 230, and during the reciprocating movement of the synchronous moving structure 230 in the first direction , when the synchronous mobile structure 230 moves in one direction, the elastic damping structure 250 deforms and stores force under the drive of the synchronous mobile structure 230, so as to provide a damping force for the synchronous mobile structure 230, and when the synchronous mobile structure 230 moves in another direction, The elastic damping structure 250 provides assistance to the synchronous moving structure 230 . Exemplarily, the elastic damping structure 250 is configured such that when the foldable electronic device to which the folding mechanism is applied is in the folded state, the elastic damping structure 250 is in a natural state. When the folding mechanism changes from the folded state to the unfolded state, the synchronous moving structure 230 causes the elastic damping structure 250 to deform and store force, and the elastic damping structure 250 provides a damping force for the synchronous moving structure 230 . When the folding mechanism changes from the unfolded state to the folded state, the elastic damping structure 250 provides assistance for the synchronous moving structure 230 .

Exemplarily, as shown in FIG. 15 , the number of swing arm groups and the number of synchronous moving structures 230 are both two, and the two synchronous moving structures 230 and the two swing arm groups are set in one-to-one correspondence, and the two swing arm groups are arranged along the The first direction interval setting. The helical directions of the first sliding parts 223 on the two swing arms 220 on the same side of the base 210 are opposite; the folding mechanism also includes an elastic damping structure 250, which is located between the two synchronous moving structures 230, and Two ends of the damping structure 250 are respectively connected with two synchronous moving structures 230 . In such a setting, since the two swing arms 220 on the same side of the base 210 have the same swing direction, when the helical directions of the first sliding parts 223 on the two swing arms 220 on the same side are opposite, the two swing arms 220 on the same side When the two swing arms 220 swing together, the two synchronous moving structures 230 move in opposite directions. For example, if the first direction is taken as the up and down direction, then among the swing arms 220 on one side, when one of the swing arms 220 drives the synchronous moving structure 230 to move upwards, the other swing arm 220 drives the synchronous moving structure 230 sleeved thereon to move upwards. Move down. Since the two swing arm groups are arranged at intervals in the first direction, the two synchronous moving structures 230 are arranged at intervals in the first direction, and the elastic damping structure 250 is located between the two synchronous moving structures 230, so the two synchronous moving structures 230 When moving toward each other, the two synchronously moving structures 230 respectively compress the elastic damping structure 250 from both sides; when the two synchronously moving structures 230 move away from each other, the two synchronously moving structures 230 respectively pull Elastic damping structure 250.

In a feasible implementation manner, the elastic damping structure 250 is configured such that when the foldable electronic device applied with the folding mechanism is in the folded state, the elastic damping structure 250 is in a natural state, and when the foldable electronic device applied with the folding mechanism is in the folded state When switching to the unfolded state, each swing arm 220 rotates outward, and drives the two synchronous moving structures 230 to move toward each other, so that the two synchronous moving structures 230 compress the elastic damping structure 250, and the elastic damping structure 250 is two A synchronously movable structure 230 provides resistance to slow down the deployment speed. When the folding electronic device with the folding mechanism is switched from the unfolded state to the folded state, each swing arm 220 rotates inward, and drives the two synchronous moving structures 230 to move away from each other, and the elastic damping structure 250 is The two synchronous moving structures 230 provide assistance to facilitate the smooth folding of the foldable electronic device.

Or, in another feasible implementation manner, the elastic damping structure 250 is configured such that when the foldable electronic device with the folding mechanism is in the folded state, the elastic damping structure 250 is in a natural state, and when the foldable electronic device with the folding mechanism is When switching from the folded state to the unfolded state, each swing arm 220 rotates outward, and drives the two synchronous moving structures 230 to move away from each other, so that the two synchronous moving structures 230 pull the elastic damping structure 250, and the elastic damping structure 250 provides resistance to the two synchronously moving structures 230 to slow down the speed of deployment. When the folding electronic device with the folding mechanism is switched from the unfolded state to the folded state, each swing arm 220 rotates inward, and drives the two synchronous moving structures 230 to move toward each other, and the elastic damping structure 250 is The two synchronous moving structures 230 provide assistance to facilitate the smooth folding of the foldable electronic device.

In a feasible implementation manner, one or more elastic damping structures 250 may be connected between the two synchronous moving structures 230 . When the number of the elastic damping structure 250 is one, the two ends of the elastic damping structure 250 are respectively connected to the middle area of the synchronous moving structure 230 , or in other words, the area of the synchronous moving structure 230 closer to the base 210 . When there are multiple elastic damping structures 250 , the multiple elastic damping structures 250 are distributed from a position close to one swing arm 220 to a position close to another swing arm 220 at intervals.

Exemplarily, there are two elastic damping structures 250 , and the two elastic damping structures 250 are respectively located on two sides of the base 210 , and the distances between the two elastic damping structures 250 and the base 210 are equal. In other words, the shortest distance between one elastic damping structure 250 and the base 210 is equal to the shortest distance between the other elastic damping structure 250 and the base 210 .

The elastic damping structure 250 can be a block structure, a cylinder structure, etc. made of elastic materials, such as rubber blocks and rubber cylinders. Alternatively, the elastic damping structure 250 may also be a shrapnel, a spring, or the like.

In some implementations, as shown in FIG. 15 , each elastic damping structure 250 includes a spring, the central axis of the spring coincides with the rotation axis A of the swing arm 220, one end of the spring is connected to the synchronous moving structure 230, and the other end of the spring is connected to the synchronous moving structure 230. Another synchronized mobile structure 230 is connected. Specifically, when the synchronous moving structure 230 includes a first ring body 231 , a second ring body 232 and a sliding body 233 , and the first ring body 231 is located on the left side of the base 210 , and the second ring body 232 is located on the left side of the base 210 When on the right side, the spring on the left side of the base 210 is located between the two first ring bodies 231, and the two ends of the spring are respectively connected to the two first ring bodies 231; the spring on the right side of the base 210 is located between the two first ring bodies 231 between the two second ring bodies 232, and the two ends of the spring are respectively connected to the two second ring bodies 232. On the same side of the base 210 , one end of each swing arm 220 is located in the cavity of the corresponding spring. Exemplarily, the bottom end of the swing arm 220 on the upper left side of the base 210 is covered with a first ring body 231, and the bottom end of the swing arm 220 on the upper left side passes through the first ring body 231 and extends into two first rings. Between the bodies 231 and at the top region of the inner cavity of the spring. The top end of the swing arm 220 on the lower left side of the base 210 is covered with a first ring body 231, and the top end of the swing arm 220 on the lower left side passes through the first ring body 231 and extends between the two first ring bodies 231 and is located at The bottom area of the inner chamber of the spring. The bottom end of the swing arm 220 on the upper right side of the base 210 is covered with a second ring body 232 , and the bottom end of the swing arm 220 on the upper right side passes through the second ring body 232 and extends between the two second ring bodies 232 and located in the top region of the inner cavity of the spring. The top end of the swing arm 220 on the lower right side of the base 210 is covered with a second ring body 232 , and the top end of the swing arm 220 on the lower right side passes through the second ring body 232 and extends between the two second ring bodies 232 and located in the bottom area of the inner cavity of the spring. In this way, the overall space occupied by the folding mechanism is smaller and the structure is more compact, and one end of the swing arm 220 extends into the inner cavity of the spring, so that the swing arm 220 plays a certain role in limiting the spring during the stretching process of the spring.

In a feasible implementation manner, two elastic damping structures 250 are connected between the two synchronously moving structures 230. The elastic damping structures 250 are specifically compression springs, and the two ends of one elastic damping structure 250 are respectively connected to the two second On one ring body 231, the two ends of another elastic damping structure 250 are respectively connected to the two second ring bodies 232, and the two ends of the elastic damping structure 250 connected to the first ring body 231 are sleeved on the base 210 respectively. The two ends of the elastic damping structure 250 connected to the second ring body 232 are respectively sleeved on the two swing arms 220 on the right side of the base 210 outside the partial area of the rod portion 221 of the two left swing arms 220 The outside of the partial area of the rod portion 221.

When at least one of the first casing 110 and the second casing 120 swings, the synchronous moving structure 230 drives the other to swing, so that the first casing 110 and the second casing 120 swing in opposite directions synchronously. for example:

When the first casing 110 drives the two swing arms 220 on the left side to swing inward, the two swing arms 220 respectively drive the two synchronous moving structures 230 to move toward each other. On the one hand, the two synchronous moving structures 230 The elastic damping structure 250 is compressed, and the elastic damping structure 250 provides resistance for the two synchronously moving structures 230. On the other hand, the two synchronously moving structures 230 respectively drive the two swing arms 220 on the right side to swing inward, so that the two swing arms 220 on the left side The two swing arms 220 on the side swing inward synchronously with the two swing arms 220 on the right side, thereby driving the first housing 110 and the second housing 120 to swing inward synchronously.

When the first casing 110 drives the two swing arms 220 on the left side to swing outward, the two swing arms 220 respectively drive the two synchronous moving structures 230 to move toward each other. On the one hand, the elastic damping structure 250 is compressed by The state returns to the original state and provides power assistance for the two synchronous mobile structures 230. On the other hand, the two synchronous mobile structures 230 respectively drive the two swing arms 220 on the right side to swing outwards, so that the two swing arms 220 on the left side 220 swings outward synchronously with the two swing arms 220 on the right side, thereby driving the first casing 110 and the second casing 120 to swing outward synchronously.

As shown in FIG. 16 and FIG. 17 , in addition to the arrangement in which the elastic damping structure 250 is only connected to the synchronous moving structure 230 , the elastic damping structure 250 can also be connected to the synchronous moving structure 230 and the base 210 respectively. In this arrangement, one end of the elastic damping structure 250 is connected to the synchronous moving structure 230 , and the other end is connected to the base 210 . Specifically, the mounting seat 212 can be provided on the base 210, one end of the elastic damping structure 250 is connected to the synchronous moving structure 230, and the other end is connected to the mounting seat 212, so that when the synchronous moving structure 230 moves relative to the base 210 In this process, the distance between the synchronously moving structure 230 and the mounting seat 212 changes, so that the elastic damping structure 250 expands and contracts.

The above arrangement is suitable for the situation that the number of synchronous moving structures 230 in the folding mechanism is odd, or the moving directions of multiple synchronous moving structures 230 are in the same direction. As shown in FIG. 16 , there is one swing arm group and one synchronous moving structure 230 , and the two swing arms 220 in the swing arm group are respectively located on the left and right sides of the base 210 . A mounting seat 212 is respectively arranged on the left side and the right side of the base 210, and a through hole is formed on the mounting seat 212 along the up and down direction. The portion 221 passes through the through hole of the mounting base 212 . On the same side of the base, the elastic damping structure 250 is located between the synchronous moving structure 230 and the mounting seat 212, and the elastic damping structure 250 is sleeved on the outside of the rod 221, and one end of the elastic damping structure 250 is connected to the synchronous moving structure 230, The other end is connected with the mounting base 212 . In FIG. 16 , one end of the elastic damping structure 250 on the left side of the base 210 is connected to the first ring body 231 of the synchronous moving structure 230 , and the other end is connected to the mounting base 212 connected to the left side of the base 210 . One end of the elastic damping structure 250 on the right side of the base 210 is connected to the second ring body 232 of the synchronous moving structure 230 , and the other end is connected to the mounting seat 212 connected to the right side of the base 210 .

The above setting method is also applicable to the case where the number of synchronous moving structures 230 is an even number. As shown in FIG. 17 , there are two swing arm groups and two synchronous moving structures 230 , and the two swing arms 220 in each swing arm group are respectively located on the left and right sides of the base 210 . A mounting seat 212 is respectively provided on the left side and the right side of the base 210, and the mounting seat 212 on the left side of the base 210 is located between the first ring bodies 231 of the two synchronous moving structures 230, and is located on the base 210. The mounting base 212 on the right is located between the second ring bodies 232 of the two synchronous moving structures 230 . One elastic damping structure 250 is provided corresponding to each swing arm 220 , so in the folding mechanism with two swing arm groups in FIG. 17 , the number of elastic damping structures 250 is four. One end of the elastic damping structure 250 opposite to the swing arm 220 on the upper left side of the base 210 is connected to the first ring body 231 of the upper synchronous moving structure 230 , and the other end is connected to the top surface of the left mounting seat 212 . One end of the elastic damping structure 250 opposite to the swing arm 220 on the lower left side of the base 210 is connected to the first ring body 231 of the upper synchronous moving structure 230 , and the other end is connected to the bottom surface of the left mounting seat 212 . One end of the elastic damping structure 250 opposite to the swing arm 220 on the upper right side of the base 210 is connected to the second ring body 232 of the upper synchronous moving structure 230 , and the other end is connected to the top surface of the right mounting seat 212 . One end of the elastic damping structure 250 opposite to the swing arm 220 on the lower right side of the base 210 is connected to the second ring body 232 of the upper synchronous moving structure 230 , and the other end is connected to the bottom surface of the right mounting seat 212 . In this arrangement, the mounting seat 212 does not need to be provided with a through hole, and can adopt a flat plate structure.

As shown in FIG. 18 , this embodiment provides a foldable electronic device. The foldable electronic device includes a flexible screen, a folding mechanism and two casings. Two shells 120, the flexible screen is covered on the first shell 110 and the second shell 120, the first shell 110 and the second shell 120 play a supporting role for the flexible screen, by turning over the first shell 110 and/or Or the second housing 120, the flexible screen can be folded or flattened (unfolded). The folding mechanism is any one of the above-mentioned folding mechanisms. The folding mechanism includes a base 210. The first housing 110 and the second housing 120 are respectively located on both sides of the base 210. The first housing 110 is located on the same side of the base 210. The second housing 120 is connected to the swing arm 220 on the same side of the base 210 .

For example, the first housing 110 is located on the left side of the base 210, the second housing 120 is located on the right side of the base 210, and one swing arm 220 in the swing arm group of the folding mechanism is located on the left side of the base 210. Another swing arm 220 is located on the right side of the base 210 , the first housing 110 is connected to the swing arm 220 located on the left side of the base 210 , and the second housing 120 is connected to the swing arm 220 located on the right side of the base 210 . When the number of swing arm groups is multiple, a plurality of swing arms 220 are respectively arranged on the left and right sides of the base 210, the first casing 110 is connected with each swing arm 220 on the left side of the base 210, and the second The housing 120 is connected to each swing arm 220 located on the right side of the base 210 .

In a specific implementation manner, the swing arm 220 is connected to the middle frame of the housing, specifically, the first housing 110 includes a first middle frame, the second housing 120 includes a second middle frame, and the first middle frame is located at On the left side of the base 210, the second middle frame is located on the right side of the base 210, the number of swing arm groups is two, and the two swing arms 220 in one swing arm group are respectively located at the top area of the base 210, and are located at On the left and right sides of the base 210, the two swing arms 220 in another swing arm group are respectively located at the bottom area of the base 210, and are respectively located on the left and right sides of the base 210. 220 is connected to the upper area of the right edge of the first middle frame, and the swing arm 220 located below the left side of the base 210 is connected to the lower area of the right edge of the first middle frame. The swing arm 220 located above the right side of the base 210 is connected to the upper area of the left edge of the second middle frame, and the swing arm 220 located below the right side of the base 210 is connected to the lower area of the left edge of the second middle frame.

The folding electronic device provided in this embodiment is applied with the folding mechanism provided in the above-mentioned first embodiment, and the setting of the folding mechanism provided in the above-mentioned first embodiment improves the folding process of the first casing 110 and the second casing 120. Synchronization, so that the force of the flexible screen during the folding process is more balanced, so as to reduce or even avoid the damage of the flexible screen caused by uneven force to a certain extent.

In an optional embodiment, as shown in FIG. 19, in the folding mechanism, each swing arm 220 includes a rod portion 221 and a mounting portion 222, and each mounting portion 222 is provided with a limit gap 225, correspondingly, as shown in FIG. As shown in FIG. 20 , both the first housing 110 and the second housing 120 are provided with protrusions 131 . The protrusion 131 on the first housing 110 extends into the limit notch 225 of the swing arm 220 on the same side of the base 210 , and the protrusion 131 on the second housing 120 extends into the limit gap 225 on the same side of the base 210 . The limit gap 225 of the swing arm 220 . In this way, when the first housing 110 is connected to the swing arm 220, and when the second housing 120 is connected to the swing arm 220, the protrusion 131 can be inserted into the limit gap 225, so that the first housing 110 and the swing arm 220 , as well as the second housing 120 and the swing arm 220 are positioned relatively to a certain extent, so as to facilitate installation and fixing.

In a feasible implementation manner, the limiting notch 225 is disposed at the corner region of the end of the mounting portion 222 away from the rod portion 221, the limiting notch 225 penetrates the mounting portion 222 along the first direction, and the protrusion 131 extends along the first direction set, and the outer wall of the protrusion 131 on the first housing 110 is in contact with the inner wall of the limiting notch 225 on the same side of the base 210, and the outer wall of the protrusion 131 on the second housing 120 is in contact with the inner wall of the limiting notch 225 on the same side of the base 210. Contact with the inner wall of the limiting notch 225 on the same side. The side of the mounting portion 222 used to define the limiting notch 225 is the inner wall of the limiting notch 225 . In FIG. 19 , the limiting notch 225 is defined by two planes arranged at an angle, both of which are inner walls of the limiting notch 225 . In FIG. 17 , the area defined between two relatively vertical planes on the mounting part 222 is the limiting notch 225 , which is in the shape of a cube. shaped bumps 131 .

In a specific embodiment, as shown in FIG. 19 and FIG. 20 , both the first housing 110 and the second housing 120 include a body 132 and a bump 131 , and the bump 131 is disposed on one side edge region of the body 132 , The body 132 and the protruding block 131 can be manufactured through an integral molding process. The thickness of the protrusion 131 is L1, and the thickness of the body 132 is L2. The mounting portion 222 of the swing arm 220 includes a first area with a limiting notch 225 and a second area without a limiting notch 225, the thickness of the first area is L3, and the thickness of the second area is L4. In a feasible implementation manner, L1<L2, L3<L4, and L1+L3=L2. That is to say, when the first housing 110 (or the second housing 120 ) is connected to the swing arm 220 , the protruding block 131 is extended into the limit notch 225 , and the installation of the protruding block 131 and the limit notch 225 is provided. The thickness of the part 222 is equal to the thickness of the main body 132 , that is, after installation, the flatness of the connection between the first housing 110 and the installation part 222 is relatively high.

In a possible implementation manner, the length of the body 132 along the first direction is equal to the length of the protrusion 131 along the first direction, and the length of the limiting notch 225 along the first direction is equal to the length of the installation part 222 along the first direction .

In a feasible implementation manner, the foldable electronic device further includes a locking member, which is used to connect the swing arm 220 to the housing on the same side. As shown in FIG. 19 , the swing arm 220 is provided with a first installation hole 224 , and as shown in FIG. 20 , both the first housing 110 and the second housing 120 are provided with a second installation hole 133 . The locking member may comprise a bolt, or a bolt and a nut. In a specific arrangement, the first installation hole 224 and the second installation hole 133 may both be through holes and light holes. When connecting the swing arm 220 to the first housing 110, the first mounting hole 224 of the swing arm 220 corresponds to the second mounting hole 133 on the first housing 110, and the bolts are passed through the first mounting holes 224 in sequence. and the second mounting hole 133 (or pass through the second mounting hole 133 and the first mounting hole 224 in turn), and lock with the nut, so as to complete the connection between the swing arm 220 and the first housing 110 . Similarly, when connecting the swing arm 220 and the second housing 120, the first mounting hole 224 of the swing arm 220 corresponds to the second mounting hole 133 on the second housing 120 one by one, and the bolts are passed through the first mounting hole 133 in sequence. The installation hole 224 and the second installation hole 133 (or pass through the second installation hole 133 and the first installation hole 224 in turn) are locked with nuts, thereby completing the connection between the swing arm 220 and the first housing 110 .

Or, in another specific arrangement, one of the first installation hole 224 and the second installation hole 133 is a through hole and a light hole (that is, a hole whose inner wall is not provided with a convex or concave structure), and the other One is a threaded hole and can be a through hole or a blind hole. When connecting the swing arm 220 and the first housing 110 , screw the bolts through the corresponding through holes and screw them into the corresponding threaded holes, so as to connect the first housing 110 and the swing arm 220 . When connecting the swing arm 220 and the second housing 120 , screw the bolts through the corresponding through holes and screw them into the corresponding threaded holes, so as to connect the first housing 110 and the swing arm 220 .

In a specific implementation manner, the first mounting hole 224 is disposed on the mounting portion 222 of the swing arm 220 and communicates with the limiting notch 225 on the mounting portion 222 . The second installation hole 133 is disposed on the corresponding protrusion 131 of the first housing 110 or the second housing 120 .

The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still implement the foregoing embodiments Modifications to the technical solutions described in the examples, or equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the application, and should be included in the Within the protection scope of this application.

Claims (12)

1. A folding mechanism, comprising:

the base extends along a first direction;

the folding assembly comprises at least one swing arm group, each swing arm group comprises two swing arms, the two swing arms are respectively positioned on two sides of the base, the two swing arms are respectively used for being in one-to-one corresponding connection with two shells in the electronic equipment, the two swing arms are respectively provided with a rotating axis, the swing arms can rotate around the rotating axes, the two rotating axes are respectively parallel to the first direction, the two swing arms are respectively provided with first sliding parts spirally extending along the rotating axes, the spiral directions of the two first sliding parts are opposite, and the thread pitches of the two first sliding parts are the same;

the synchronous moving structure is slidably mounted on the base and can move along the first direction relative to the base, matching hole groups are respectively arranged on the synchronous moving structure relative to the swing arm groups, each matching hole group comprises two matching holes, a second sliding part is arranged in each matching hole, each swing arm penetrates through each matching hole in a one-to-one correspondence manner, the rotating axis of each swing arm is overlapped with the axis of the corresponding matching hole, the second sliding part is in sliding fit with the first sliding part, and the synchronous moving structure is driven to move through the matching of the first sliding part of each swing arm and the second sliding part in the corresponding matching hole in the rotating process of the swing arm;

the number of the swing arm groups and the number of the synchronous moving structures are two, the two synchronous moving structures and the two swing arm groups are arranged in a one-to-one correspondence manner, the two swing arm groups are arranged at intervals along the moving direction of the synchronous moving structures, and the rotating axes of the swing arms positioned on the same side of the base are coaxially arranged;

the spiral directions of the first sliding parts on the two swing arms positioned on the same side of the base are opposite; the folding mechanism further comprises an elastic damping structure, the elastic damping structure is located between the two synchronous moving structures, two ends of the elastic damping structure are respectively connected with the two synchronous moving structures, and the elastic damping structure is used for providing resistance for the two synchronous moving structures when the electronic equipment is switched from the folding state to the unfolding state so as to slow down the unfolding speed; when the electronic equipment is switched from the unfolding state to the folding state, the elastic damping structure provides assistance for the two synchronous moving structures through the elasticity of the elastic damping structure.

2. The folding mechanism of claim 1 wherein said first sliding portion is a sliding slot and said second sliding portion is a slider extending in a spiral direction on an inner wall of said mating hole.

3. The folding mechanism of claim 1, wherein said synchronized movement structure includes a first ring, a second ring and a slider, said first ring and said second ring being respectively connected to said slider, said slider being slidably mounted on said base, said first ring having an inner cavity defining one of said mating holes, said second ring having an inner cavity defining the other of said mating holes.

4. The folding mechanism of claim 1 wherein said number of said elastic damping structures is two, two of said elastic damping structures are located on either side of said base, and the distance between two elastic damping structures and said base is equal.

5. The folding mechanism of claim 4, wherein each of said elastic damping structures comprises a spring, both ends of said spring are respectively connected to two of said synchronously moving structures, and at the same side of said base, one end of each of said swing arms between two of said synchronously moving structures is located in an inner cavity of the corresponding spring, and said spring and the corresponding swing arms are coaxially arranged.

6. The folding mechanism of claim 1 wherein said base is provided with a guide rail and said synchronizing structure is provided with a guide slot matching said guide rail, said guide rail extending into said guide slot, said synchronizing structure being slidably mounted on said guide rail through said guide slot.

7. The folding mechanism of claim 6 further comprising a buckling structure, wherein the buckling structure comprises a limiting portion and a connecting portion, the limiting portion is connected to the base through the connecting portion, the limiting portion is located on a side of the guide rail away from the base, a limiting space is formed between the limiting portion and the guide rail, and a part of the synchronous moving structure is located in the limiting space.

8. The folding mechanism of claim 1, wherein each of the swing arms includes a rod portion and a mounting portion, the mounting portion is connected to a side of the rod portion, the mounting portion is connected to the corresponding housing, an axis of the rod portion is the rotation axis, and the first sliding portion is disposed on an outer side wall of the rod portion.

9. The folding mechanism of claim 8 wherein each mounting portion is provided with a retention notch for a projection of the housing to extend into.

10. A foldable electronic device, comprising a first housing, a second housing, a flexible screen, and the foldable mechanism of any one of claims 1 to 9, wherein the flexible screen covers the first housing and the second housing, the first housing and the second housing are respectively located on two sides of the base in the foldable mechanism, the first housing is connected to the swing arm located on the same side of the base, and the second housing is connected to the swing arm located on the same side of the base.

11. The folding electronic device of claim 10, wherein each of the swing arms includes a lever portion and a mounting portion, each of the mounting portions is provided with a limit notch, the first housing and the second housing are provided with a protrusion, the protrusion on the first housing extends into the limit notch of the swing arm on the same side of the base, and the protrusion on the second housing extends into the limit notch of the swing arm on the same side of the base.

12. The folding electronic device of claim 11, wherein the mounting portion is provided with a first mounting hole that penetrates the mounting portion in a thickness direction, the limit notch is provided in a corner region of an end of the mounting portion away from the rod portion, the limit notch penetrates the mounting portion in a first direction, and the first mounting hole communicates with the limit notch; the lug extends along a first direction, and a second mounting hole is formed in the lug; the folding electronic equipment further comprises a locking piece, and the locking piece penetrates through the first mounting hole and the second mounting hole to be connected with the mounting portion and the lug.

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