Hinge structure and folding electronic equipment thereof

Abstract

The utility model relates to the technical field of folding type electronic equipment, in particular to a hinge structure and folding type electronic equipment thereof, and the hinge structure comprises a body, a bearing piece and a synchronous assembly. The synchronous assembly comprises an arc-shaped rotating plate and a synchronous transmission part; the left rotating plate and the right rotating plate are correspondingly and fixedly connected with the left supporting piece and the right supporting piece; and a spiral transmission pair is arranged between the rotating plate and the synchronous transmission part and is used for realizing conversion and transmission between the swinging motion of the bearing part and the rotating plate and the linear motion of the synchronous transmission part. According to the utility model, through coupling connection of the spiral line grooves and the clamping convex structures between the arc-shaped rotating plates and the synchronous transmission part, synchronous rotation of the arc-shaped rotating plates at two sides is realized, stability and consistency of the folding electronic equipment in folding and unfolding processes are ensured, and user experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to foldable electronic equipment technical field, especially hinge structure and foldable electronic equipment thereof. BACKGROUND

[0002] Foldable electronic equipment, such as foldable screen mobile phone, tablet computer etc., realizes the folding and unfolding of screen through hinge structure. Hinge structure not only needs to support the weight of screen, but also needs to keep the flatness and stability of screen in the folding and unfolding process. At the same time, due to the high frequency of use of foldable electronic equipment, the durability of hinge structure also becomes an important consideration factor. However, the hinge structure of prior art is too complex, the production precision requirement is high in the production process, the installation process is difficult, and the aging of local or individual components is easy to occur in the use process with abrasion and natural erosion, thereby affecting the use of the whole hinge structure. In addition, too many components in prior art make the hinge volume larger, which affects the use of electronic equipment. SUMMARY

[0003] The utility model aims at providing a hinge structure and foldable electronic equipment thereof to solve at least one technical problem existing in prior art.

[0004] To solve the above technical problem, the utility model provides a hinge structure, which comprises a body, a supporting piece and a synchronous assembly.

[0005] The supporting piece is pivotally arranged on the body.

[0006] The supporting piece comprises left and right symmetrical left and right supporting pieces.

[0007] The synchronous assembly comprises a circular arc-shaped rotating plate and a synchronous transmission piece.

[0008] The synchronous transmission piece is arranged on the body only in the direction of the pivot center line (i.e. virtual rotating axis center line) of the supporting piece for reciprocating movement.

[0009] The rotating plate comprises left and right rotating plates arranged on the left and right sides of the synchronous transmission piece respectively; the left and right rotating plates are respectively fixedly connected with the left and right supporting pieces.

[0010] A screw transmission pair is arranged between the rotating plate and the synchronous transmission piece for realizing the conversion and transmission between the pivoting movement of the supporting piece and the rotating plate and the linear movement of the synchronous transmission piece.

[0011] The left helical transmission pair between the left rotating plate and the synchronous transmission member is opposite to the right helical transmission pair between the right rotating plate and the synchronous transmission member in the helical direction, for realizing synchronous forward or reverse swinging of the left support member and the right support member (such as realizing synchronous counterclockwise and clockwise swinging of the left support member and the right support member respectively, synchronous swinging in the opening and closing process).

[0012] Further, the helical transmission pair comprises a helical groove provided on the rotating plate or the synchronous transmission member, and a slider structure (i.e. a convex limiting and transmission structure) provided on the synchronous transmission member or the rotating plate, which is relatively slidably inserted into the helical groove, realizing transmission between the rotating plate and the synchronous transmission member.

[0013] When the circular arc rotating plate on one side rotates, the synchronous transmission member is forced to move in the axial direction of the virtual rotating axis of the circular arc rotating plate through the helical transmission pair on this side, and then the circular arc rotating plate on the other side is forced to rotate synchronously in the same direction or in the opposite direction through the helical transmission pair on the other side, realizing synchronous rotation of the two circular arc rotating plates; that is, the left rotating plate and the right rotating plate on both sides realize synchronous reverse or forward swinging through the intermediate synchronous transmission member, realizing synchronous opening and closing action.

[0014] Further, the left helical transmission pair and the right helical transmission pair are symmetrically arranged.

[0015] Alternatively, the left helical transmission pair and the right helical transmission pair can also be asymmetrically arranged. One or several pairs of the left helical transmission pair and the right helical transmission pair can be included in the synchronous assembly.

[0016] Further, the same synchronous assembly includes several pairs of the left helical transmission pair and / or the right helical transmission pair; in the direction of the swinging center line, the left helical transmission pair and the right helical transmission pair are staggered.

[0017] Further, the synchronous transmission member comprises a main body;

[0018] The main body comprises a middle trunk part and two side arm spreading parts;

[0019] The arm spreading part and the rotating plate are provided with the helical transmission pair.

[0020] Further, the synchronous transmission member comprises a long tail part, which is rod-shaped as a whole and is relatively fixedly arranged at the tail (or one end) of the trunk part; the trunk part and the long tail part are arranged in the direction of the swinging center line as a whole.

[0021] A temporary clamping structure is arranged between the long tail and the body, for temporarily limiting the left and right support members and the left and right rotating plates at one or several set opening and closing angles.

[0022] Further, the temporary clamping structure comprises a limiting protrusion arranged on the long tail or the body, and a clamping groove arranged on the body or the long tail and matched with the limiting protrusion.

[0023] Preferably, the limiting protrusion is made of elastic material, and when the left and right rotating plates relatively swing, the long tail is forced to move along the swing center line direction by the screw transmission pair, and the limiting protrusion is forced to extrude into or out of the clamping groove by forcing the elastic material to deform; after the limiting protrusion is extruded into the clamping groove, the left and right rotating plates are temporarily limited at the set opening and closing angle.

[0024] Further, a clamping plate and an execution spring are further included;

[0025] The clamping plate is slidably arranged on the body;

[0026] The limiting protrusion or the clamping groove is arranged on the clamping plate;

[0027] The execution spring is arranged between the clamping plate and the body, and tends to force the clamping plate to abut against the long tail, thereby maintaining the clamping state of the limiting protrusion and the clamping groove (i.e. the limiting protrusion is clamped in the clamping groove, so that the hinge structure is temporarily kept at a set opening and closing angle).

[0028] Preferably, the temporary clamping structure is arranged left-right symmetrically.

[0029] Preferably, the limiting protrusion or the clamping groove is symmetrically arranged on the left and right sides of the long tail;

[0030] Two groups of the clamping plate and the execution spring are respectively arranged left-right symmetrically on the two sides of the long tail; the two clamping plates on the left and right sides tend to move to the middle under the action of the execution spring, thereby clamping the long tail and maintaining the clamping state of the limiting protrusion and the clamping groove.

[0031] Alternatively, the temporary clamping structure can also be arranged on one side, i.e. only the limiting protrusion or the clamping groove is arranged on the left side or the right side of the long tail, and only one group of the clamping plate and the execution spring is arranged on the left side or the right side of the long tail; the clamping plate tends to move to the middle under the action of the execution spring, thereby clamping the long tail between the clamping plate and the body.

[0032] The right side surface or the left side surface of the long tail and the abutting working surface of the body are vertical planes arranged along the swing center line.

[0033] Further, the two ends of the limiting protrusion and the clamping groove in the direction of the swing center line are provided with a smooth transition structure such as chamfer, round or arc slope, which is used to guide the limiting protrusion to be clamped into the clamping groove.

[0034] Due to the smooth transition structure, the limiting protrusion and the clamping groove are in the shape of a ladder. When the electronic device is unfolded to the vicinity of the commonly used set opening and closing angle of 120 degrees, 180 degrees or 360 degrees, the transition structure can guide the limiting protrusion to be clamped into the clamping groove under the action of the spring execution spring or the elasticity of the limiting protrusion itself, so that the hinge structure continues to slowly swing to the set opening and closing angle of 120 degrees, 180 degrees or 360 degrees. When the elastic force of the spring execution spring or the material is overcome by external force, the clamping state of the temporary clamping structure can be released, so that the electronic device continues to open and close.

[0035] Further, a reset spring is arranged between the synchronous transmission member and the body, which tends to force the synchronous transmission member to move back along the swing center line.

[0036] The reset spring can tend to force the slider structure in the screw transmission pair to abut against the fixed side of the screw thread groove, thereby reducing or eliminating the positioning error caused by the gap between the slider structure and the screw thread groove.

[0037] Further, in the direction of the swing center line, the length of the clamping groove is greater than the width of the limiting protrusion, and the clamping groove is provided with a movement allowance, and the limiting protrusion can move in the clamping groove within the movement allowance.

[0038] Preferably, the size of the movement allowance corresponds to the opening and closing angle of the left rotating plate and the right rotating plate of 1-10°.

[0039] The movement allowance combined with the arrangement of the reset spring can enable the user to fold the electronic device to a larger opening and closing angle range, and the hinge structure can automatically restore the opening and closing angle to the adjacent set opening and closing angle through the reset spring, for example, the opening and closing angle is between 0-10°, and the hinge structure can be automatically reset to the set 0°, which greatly improves the user experience.

[0040] Further, a limiting structure is arranged to limit the synchronous transmission member to move back and forth along the swing center line of the bearing member (i.e. the virtual rotating axis) and is arranged on the body.

[0041] Further, the limiting structure comprises a limiting groove or a limiting track arranged on the body or the synchronous transmission member along the swing center line, and a limiting block arranged on the synchronous transmission member or the body and slidingly inserted into the limiting groove, or a slotted groove slidingly matched with the limiting track.

[0042] The body in the present application can be a single component or an assembly, and provides a mounting base for the mounting or mutual connection of components such as supporting members and synchronous assemblies.

[0043] Preferably, the limiting structure can also be a containing groove enclosed by the body or a plurality of components constituting the body, the containing groove being a long groove arranged along the swing center line, and the synchronous transmission member being slidingly arranged on the body along the containing groove. Alternatively, one end of the containing groove in the direction of the swing center line is provided with an entrance, and one end of the synchronous transmission member is inserted into the containing groove through the entrance.

[0044] Further, the body comprises an upper base and a lower base, and in the thickness direction, the lower base, the rotating plate, the main body of the synchronous transmission member, and the upper base are arranged in sequence.

[0045] Preferably, the body is further provided with a rear cover, and in the thickness direction, the lower base, the rotating plate, the main body, the upper base, and the rear cover are arranged in sequence.

[0046] Further, the lower base is provided with a half shaft rod portion, and the half shaft rod portion is provided with a circular arc working surface on one side of the rotating plate, the circular arc working surface being matched with the inner side circular arc surface of the rotating plate for limiting when the rotating plate rotates.

[0047] Further, in the cross section perpendicular to the half shaft rod portion, the arc of the circular arc working surface is π / 4~π. More preferably, the arc of the circular arc working surface is π / 3~2π / 3.

[0048] Therefore, the cross section of the half shaft rod portion is a small semicircle, and the structure is more lightweight.

[0049] Further, the half shaft rod portions on the lower base are symmetrically arranged. That is, the left half shaft rod portion and the right half shaft rod portion are respectively matched with the left rotating plate and the right rotating plate.

[0050] Further, the main body is provided with a lower circular arc surface at the bottom of the arm span portion; the lower circular arc surface is matched with the outer side circular arc surface of the rotating plate, and the lower circular arc surface and the circular arc working surface of the half shaft rod portion enclose an arc-shaped limiting cavity for limiting when the rotating plate rotates.

[0051] Further, the bottom surface of the main body is in the shape of an inverted chevron as a whole, and a long strip-shaped lower protrusion is arranged at the bottom of the trunk, which is inserted between the left rotating plate and the right rotating plate; the two outer arc surfaces of the left rotating plate and the right rotating plate enclose a limiting guide groove arranged along the swing center line; the lower arc surfaces on the left and right sides of the long strip-shaped lower protrusion cooperate with the two outer arc surfaces to limit the synchronous transmission member to move back and forth along the swing center line.

[0052] Preferably, a guide strip is arranged on the back of the trunk along the direction of the swing center line, and a limiting groove adapted to the guide strip is arranged on the upper base to limit the synchronous transmission member to move back and forth along the swing center line.

[0053] Preferably, the cross section of the guide strip is rectangular or dovetail-shaped.

[0054] Further, the upper base comprises a left rod and a right rod arranged symmetrically, and the left rod and the right rod are respectively provided with assembly grooves for accommodating the two arm spread parts of the synchronous transmission member.

[0055] More preferably, the bottom surface of the assembly groove abuts against the back surface of the arm spread part to limit the position.

[0056] Preferably, the lengths of the lower base, the left rod and the right rod are the same as the entire hinge structure.

[0057] Further, the left rod and the right rod are arranged with a space therebetween to form the limiting groove.

[0058] More preferably, the left rod and the right rod are processed from round rods or square rods.

[0059] Further, the long tail part is arranged in the middle space between the left rod and the right rod; the left rod and the right rod are provided with recesses for accommodating the clamping plates, and the recesses are provided with plug-in holes for inserting the execution springs.

[0060] Preferably, guide columns are arranged on the two sides of the clamping plate, and guide holes are arranged in the recesses of the left rod and the right rod to guide the guide columns.

[0061] Alternatively, the slider structure of the screw transmission pair abuts against the bottom surface of the helical groove, so that the rotating plate can also be abutted from above in the thickness direction, cooperates with the arc working surface on the lower base half shaft rod part below to clamp the rotating plate in the middle, thereby limiting the rotating plate when rotating.

[0062] Preferably, one or more groups of the synchronous assembly are arranged along the direction of the swing center line.

[0063] The second aspect of the present application discloses a folding electronic device with the above-mentioned hinge structure.

[0064] With the above technical scheme, the utility model has the following beneficial effects:

[0065] (1) The helical groove and the clamping convex structure coupling connection between the circular arc-shaped rotating plates and the synchronous transmission member realize the synchronous rotation of the two circular arc-shaped rotating plates, ensure the stability and consistency of the folding electronic device in the folding and unfolding process, and improve the user experience.

[0066] (2) The clamping plate and the long tail part (i.e. a kind of elastic forced clamping assembly and telescopic rod structure) are arranged, so that the hinge structure can realize temporary limiting at a specific angle, and the flexibility and stability of the hinge assembly are increased.

[0067] (3) The main body and the long tail part of the synchronous transmission member are integrally connected in the present application, the structures corresponding to the two functions of synchronous rotation and temporary limiting are combined into one, compared with the two mechanisms working separately in the traditional hinge, the structure is simplified, the limited space of the hinge is saved, and the components are simple and less likely to be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0068] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0069] Figure 1 It is a perspective view of the hinge structure;

[0070] Figure 2 It is Figure 1 an exploded view of the hinge structure;

[0071] Figure 3 It is Figure 1 an exploded view of the main body and the synchronous assembly;

[0072] Figure 4 It is an exploded view of the synchronous assembly in the embodiment;

[0073] Figure 5 It is a perspective view of the rotating plate in the embodiment;

[0074] Figure 6 It is a perspective view of the synchronous transmission member from the first angle in the embodiment;

[0075] Figure 7 It is a perspective view of the synchronous transmission member from the second angle in the embodiment;

[0076] Figure 8 is a front view of the synchronous assembly;

[0077] Figure 9 is a partial view of the body and the synchronous assembly;

[0078] Figure 10 is Figure 9 is a sectional view of AA;

[0079] Figure 11 is Figure 10 is a schematic view of the structure when the guide bar cross section is dovetail type;

[0080] Figure 12 is an exploded schematic view of the body;

[0081] Figure 13 is Figure 12 is a partial enlarged view at D;

[0082] Figure 14 is Figure 12 is a partial enlarged view at C;

[0083] Figure 15 is Figure 12 is a partial enlarged view at E.

[0084] Reference signs:

[0085] 10 - body; 11 - upper base; 11a - left rod; 11b - right rod; 11c - assembly groove; 11d - insertion hole; 11e - guide hole; 12 - pressing plate; 15 - lower base; 15a - half shaft rod part; 19 - rear cover; 20 - supporting piece; 21 - left support piece; 22 - right support piece; 30 - synchronous assembly; 31 - synchronous transmission piece; 31a - main body; 31b - long tail part; 31c - limiting protrusion; 32 - slider structure; 33 - torso part; 33a - guide bar; 34 - arm spread part; 35 - rotating plate; 35a - left rotating plate; 35b - right rotating plate; 36 - connecting wing plate; 37 - helical line groove; 40 - clamping plate; 41 - clamping groove; 42 - guide column; 45 - execution spring; 46 - reset spring. DETAILED DESCRIPTION

[0086] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0087] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0088] The present invention will be further explained below with reference to specific embodiments.

[0089] like Figures 1-3 As shown, the hinge structure provided in this embodiment includes a body 10, a support member 20, and a synchronization component 30; the support member 20 is rotatably mounted on the body 10; the support member 20 includes a left support member 21 and a right support member 22 arranged symmetrically on the left and right sides.

[0090] like Figures 4-8 As shown, the synchronization component 30 includes an arc-shaped rotating plate 35 and a synchronization transmission component 31; the synchronization transmission component 31 is disposed on the body 10 and can only reciprocate along the swing center line (i.e., the virtual rotation axis line) of the support component 20.

[0091] like Figure 4 As shown, the rotating plate 35 includes a left rotating plate 35a and a right rotating plate 35b respectively arranged on the left and right sides of the synchronous transmission member 31; the left rotating plate 35a and the right rotating plate 35b are respectively fixedly connected to the left support member 21 and the right support member 22; specifically, in this embodiment, the left rotating plate 35a and the right rotating plate 35b are respectively connected to the left support member 21 and the right support member 22 through an integrally formed connecting wing plate 36; specifically, they can be connected by plug-in method or by screw hole method.

[0092] A helical transmission pair is provided between the rotating plate 35 and the synchronous transmission member 31 to realize the conversion and transmission between the swing motion of the support member 20 and the rotating plate 35 and the linear motion of the synchronous transmission member 31; the left helical transmission pair between the left rotating plate 35a and the synchronous transmission member 31 and the right helical transmission pair between the right rotating plate 35b and the synchronous transmission member 31 have opposite helical directions, which are used to realize the synchronous swing of the left support member 21 and the right support member 22 in opposite directions (that is, to realize the synchronous swing of the left support member 21 and the right support member 22 in counterclockwise and clockwise respectively, i.e., synchronous swing during the opening and closing process).

[0093] In this embodiment, the support member 20 is a tray structure, which is used to install and support other electronic components and flexible screens.

[0094] The spiral transmission pair in the present application is a transmission structure spirally wound along the arc surface. In the present embodiment, the spiral transmission pair comprises a spiral groove 37 provided on the rotating plate 35 or the synchronous transmission member 31, and a slider structure 32 provided on the synchronous transmission member 31 or the rotating plate 35 (i.e. the slider structure 32 is a convex limiting and transmission structure spirally wound along the circumferential surface), which is slidably inserted into the spiral groove 37 to realize the transmission between the rotating plate 35 and the synchronous transmission member 31.

[0095] When one side of the arc-shaped rotating plate 35 rotates, the spiral transmission pair on this side forces the synchronous transmission member 31 to move in the axial direction of the virtual rotating axis of the arc-shaped rotating plate 35, and then the spiral transmission pair on the other side causes the other side of the arc-shaped rotating plate 35 to synchronously rotate towards or away from each other, realizing the synchronous rotation of the two sides of the arc-shaped rotating plate 35; that is, the left rotating plate 35a and the right rotating plate 35b on both sides realize synchronous reverse or forward swing through the intermediate synchronous transmission member 31, realizing the synchronous opening and closing action.

[0096] In the present embodiment, the same synchronous assembly 30 includes several pairs of left spiral transmission pairs and / or right spiral transmission pairs; as shown in Figure 5 each pair of rotating plates 35 and synchronous transmission members 31 is provided with two spiral transmission pairs. Preferably, the left spiral transmission pair and the right spiral transmission pair are symmetrically arranged. Alternatively, the left spiral transmission pair and the right spiral transmission pair can also be asymmetrically arranged. In addition, when the same synchronous assembly 30 includes several pairs of left spiral transmission pairs and / or right spiral transmission pairs, the left spiral transmission pairs and the right spiral transmission pairs can also be staggered in the swing center line direction. For example, one left spiral transmission pair is arranged between two right spiral transmission pairs.

[0097] Referring to Figure 6 The synchronous transmission member 31 comprises a main body 31a and a long tail 31b; the whole is similar to a spade shape; the main body 31a comprises a middle trunk 33 and two sides of the arm spread part 34; in some embodiments, the structure of the trunk 33 is not obvious, and the connecting part between the two sides of the arm spread part 34 can be defined as the trunk 33;

[0098] The arm spread part 34 and the rotating plate 35 are provided with a spiral transmission pair. The long tail 31b is rod-shaped as a whole, and is relatively fixedly arranged at the tail (or one end) of the trunk 33; the trunk 33 and the long tail 31b are arranged in the swing center line direction as a whole.

[0099] Among them, the long tail 31b and the body 10 are provided with a temporary clamping structure, which is used to temporarily limit the left supporting member 21 and the right supporting member 22, and the left rotating plate 35a and the right rotating plate 35b at one or several set opening and closing angles.

[0100] Specifically, referring to Figure 8 As shown, the temporary clamping structure includes: a limiting protrusion 31c arranged on the long tail 31b or the body 10, and a clamping groove 41 arranged on the body 10 or the long tail 31b and matched with the limiting protrusion 31c.

[0101] Alternatively, the limiting protrusion 31c is made of elastic material, and when the left rotating plate 35a and the right rotating plate 35b are relatively pivoted, the long tail 31b is forced to move along the pivoting center line direction through the screw transmission pair, and the limiting protrusion 31c is forced to be squeezed into or out of the clamping groove 41 through the deformation of the elastic material; after the limiting protrusion 31c is squeezed into the clamping groove 41, the left rotating plate 35a and the right rotating plate 35b are temporarily limited at a set opening angle.

[0102] More preferably, referring to Figure 4 and Figure 8 As shown, the embodiment further includes a clamping plate 40 and an execution spring 45; the clamping plate 40 is slidably arranged on the body 10; the clamping plate 40 is provided with the limiting protrusion 31c or the clamping groove 41; the execution spring 45 is arranged between the clamping plate 40 and the body 10, and tends to force the clamping plate 40 to abut against the long tail 31b, thereby maintaining the clamping state of the limiting protrusion 31c and the clamping groove 41 (i.e. the limiting protrusion 31c is clamped in the clamping groove 41, so that the hinge structure is temporarily kept at a set opening angle).

[0103] Preferably, the temporary clamping structure is arranged symmetrically left and right. That is, the limiting protrusion 31c and the clamping groove 41 are arranged symmetrically left and right. Specifically, the limiting protrusion 31c or the clamping groove 41 is arranged symmetrically left and right on the long tail 31b. For example, referring to Figures 6-8 As shown, the limiting protrusion 31c is symmetrically shaped left and right, and two clamping grooves 41 are symmetrically arranged on both sides thereof.

[0104] The two groups of clamping plates 40 and execution springs 45 are respectively arranged symmetrically left and right on both sides of the long tail 31b; the two clamping plates 40 on both sides tend to move to the middle under the action of the execution spring 45, thereby clamping the long tail 31b, and thereby maintaining the clamping state of the limiting protrusion 31c and the clamping groove 41.

[0105] Alternatively, the temporary locking structure can also be arranged on one side, i.e. only the locking protrusion 31c or the locking slot 41 is arranged on the left side or the right side of the long tail 31b, and only one set of locking plates 40 and the execution spring 45 is arranged on the left side or the right side of the long tail 31b; the locking plates 40 tend to move to the middle under the action of the execution spring 45, clamping the long tail 31b between the locking plates 40 and the body 10. The right side or the left side of the long tail 31b and the abutting working surface on the body 10 are arranged as vertical planes along the swing center line, so that the two can slide smoothly.

[0106] Further preferably, the two ends of the locking protrusion 31c and the locking slot 41 in the direction of the swing center line are provided with smooth transition structures such as chamfers, fillets or arc-shaped slopes, for guiding the locking protrusion 31c to be locked into the locking slot 41.

[0107] Due to the smooth transition structure, the locking protrusion 31c and the locking slot 41 are in the shape of a ladder as a whole. When the electronic device is unfolded to the vicinity of a commonly used set opening and closing angle such as 120 degrees, 180 degrees or 360 degrees, the transition structure can guide the locking protrusion 31c to be locked into the locking slot 41 under the action of the execution spring 45 or the elasticity of the locking protrusion 31c itself, i.e. to make the hinge structure continue to slowly swing to the set opening and closing angle such as 120 degrees, 180 degrees or 360 degrees. When the external force is used to overcome the execution spring 45 or the elastic force of the material, the locking state of the temporary locking structure can be released, so that the electronic device can continue to open and close.

[0108] Referring to Figure 8 , the embodiment also includes a reset spring 46 arranged between the synchronous transmission member 31 and the body 10, tending to force the synchronous transmission member 31 to move back along the direction of the swing center line.

[0109] The arrangement of the reset spring 46 can tend to force the slider structure 32 in the screw transmission pair to abut against the fixed side of the helical line groove 37, thereby reducing or eliminating the positioning error caused by the gap between the slider structure 32 and the helical line groove 37.

[0110] Further, referring to Figure 8 and Figure 9 , in the direction of the swing center line, the length of the locking slot 41 is greater than the width of the locking protrusion 31c, and the locking slot 41 is provided with a movement allowance, and the locking protrusion 31c can move within the movement allowance. Preferably, the size of the movement allowance corresponds to the opening and closing angle of the left rotating plate 35a and the right rotating plate 35b of 1-10°.

[0111] The setting of the activity allowance combined with the reset spring 46 enables the user to fold the electronic device to a larger opening and closing angle range when folding the electronic device, and the hinge structure can automatically restore the opening and closing angle to a neighboring set opening and closing angle, such as 0°, 90° or 180°, etc., greatly improving the user experience.

[0112] The body 10 in the present application can be a single component or an assembly, providing a mounting base for the mounting or mutual connection of components such as the support 20 and the synchronous assembly 30.

[0113] The present embodiment also includes a limiting structure for limiting the synchronous transmission member 31 to be movably arranged on the body 10 along the swing center line (i.e. the virtual rotation axis line) of the support 20.

[0114] The limiting structure has many forms, for example, the limiting structure includes a limiting groove or a limiting track arranged on the body 10 or the synchronous transmission member 31 along the swing center line, and a limiting block arranged on the synchronous transmission member 31 or the body 10 and slidingly inserted into the limiting groove, or a slotted groove slidingly fitted with the limiting track. Alternatively, the limiting structure can also be a containing groove enclosed by the body 10 or multiple components constituting the body 10, which is a long groove arranged along the swing center line, and the synchronous transmission member 31 is slidingly arranged on the body 10 along the containing groove.

[0115] Referring to Figure 10 and 12 , the body 10 includes an upper base 11 and a lower base 15, and in the thickness direction, the lower base 15, the rotating plate 35, the main body 31a of the synchronous transmission member 31 and the upper base 11 are arranged in sequence. After the upper base 11 and the lower base 15 are fixedly connected by fasteners, the intermediate rotating plate 35, the synchronous transmission member 31 and other components are limited.

[0116] Preferably, the body 10 is also provided with a rear cover 19, and in the thickness direction, the lower base 15, the rotating plate 35, the main body 31a, the upper base 11 and the rear cover 19 are arranged in sequence.

[0117] Further, referring to Figure 10 , Figures 12-13 , the lower base 15 is provided with a half shaft rod portion 15a, and the half shaft rod portion 15a is provided with a circular arc working surface on one side of the rotating plate 35, which is adapted to the inner circular arc surface of the rotating plate 35 for limiting when the rotating plate 35 rotates. Preferably, in the cross section perpendicular to the half shaft rod portion 15a, the arc of the circular arc working surface is π / 4~π. More preferably, the arc of the circular arc working surface is π / 3~2π / 3. Thus, the cross section of the half shaft rod portion 15a is a small semicircle, and the structure is more lightweight.

[0118] The half shaft rod parts 15a on the lower base 15 are symmetrically arranged left and right. That is, the left half shaft rod part 15a and the right half shaft rod part 15a are respectively adapted to the left rotating plate 35a and the right rotating plate 35b.

[0119] As shown in Figure 10 The bottom of the arm-spread part 34 of the main body 31a is preferably provided with a lower arc surface. The lower arc surface is adapted to the outer arc surface of the rotating plate 35. The lower arc surface and the arc working surface of the half shaft rod part 15a enclose an arc-shaped limiting cavity for limiting the rotation of the rotating plate 35.

[0120] The bottom surface of the main body 31a is overall inverted herringbone-shaped. A long-strip-shaped lower protrusion is arranged at the bottom of the trunk part 33 and is inserted between the left rotating plate 35a and the right rotating plate 35b. The two outer arc surfaces of the left rotating plate 35a and the right rotating plate 35b enclose a limiting guide groove arranged along the swing center line. The lower arc surfaces on the left and right sides of the long-strip-shaped lower protrusion are matched with the two outer arc surfaces and can be used as a limiting structure for limiting the reciprocating movement of the synchronous transmission member 31 along the swing center line.

[0121] As shown in Figure 10 Preferably, the back of the trunk part 33 can also be provided with a guide strip 33a along the swing center line direction. The cross section of the guide strip 33a is rectangular. The upper base 11 is provided with a limiting groove matched with the guide strip 33a for limiting the reciprocating movement of the synchronous transmission member 31 along the swing center line. As shown in Figure 11 The cross section of the guide strip 33a can also be dovetail-shaped.

[0122] In the embodiment, as shown in Figures 10-12 The upper base 11 is an assembly which includes the left rod member 11a and the right rod member 11b symmetrically arranged left and right. The left rod member 11a and the right rod member 11b are fixedly connected with the lower base 15 through the pressing plate 12 and the screw.

[0123] As shown in Figure 15 The left rod member 11a and the right rod member 11b are respectively provided with assembly grooves 11c for accommodating the arm-spread parts 34 of the two synchronous transmission members 31. More preferably, the bottom surface of the assembly groove 11c abuts against the back surface of the arm-spread part 34 to play a limiting role.

[0124] Preferably, the lengths of the lower base 15, the left rod member 11a and the right rod member 11b are the same as the entire hinge structure.

[0125] As shown in Figure 9 and Figure 10 The left rod member 11a and the right rod member 11b are symmetrically arranged left and right to form a limiting groove matched with the guide strip 33a of the back of the trunk part 33. The structure is simple and the processing cost is also reduced.

[0126] More preferably, the left and right rod members 11a and 11b are made of round or square rods.

[0127] Referring to Figure 9 As shown, the long tail 31b is also arranged in the middle interval of the left and right rod members 11a and 11b; referring to Figure 14 As shown, the left and right rod members 11a and 11b are provided with grooves for accommodating the detent plate 40, and the grooves are provided with plug holes 11d for inserting springs. Preferably, the detent plate 40 is provided with guide columns 42 on both sides, and the grooves of the left and right rod members 11a and 11b are provided with guide holes 11e for guiding the guide columns 42.

[0128] Alternatively, the slider structure 32 in the screw transmission pair abuts against the bottom surface of the helical groove 37, so that the rotating plate 35 can also be abutted from above in the thickness direction, and cooperates with the circular arc working surface on the half shaft rod part 15a of the lower base 15 below to clamp the rotating plate 35 in the middle, thereby playing a role of limiting the rotation of the rotating plate 35.

[0129] In addition, preferably, in the direction of the swing center line, one or more sets of synchronous assemblies 30 are included.

[0130] The second aspect of the present application discloses a folding electronic device with the above-mentioned hinge structure.

[0131] The present application realizes the synchronous rotation of the two circular arc rotating plates 35 through the coupling connection of the helical groove 37 and the clamping convex structure between the circular arc rotating plate 35 and the synchronous transmission member 31, ensures the stability and consistency of the folding electronic device in the folding and unfolding process, and improves the user experience.

[0132] The arrangement of the detent plate 40 and the long tail 31b (i.e. a kind of elastic forced detent assembly and telescopic rod structure) enables the hinge structure to realize temporary limiting at a specific angle, increases the flexibility and stability of the use of the hinge assembly.

[0133] In addition, the present application integrally connects the main body 31a and the long tail 31b in the synchronous transmission member 31, combines the structures corresponding to the two functions of synchronous rotation and temporary limiting, and compared with the two mechanisms working separately in the traditional hinge, simplifies the structure, saves the limited space at the hinge, and at the same time, due to the simplicity of the components, it is less likely to be damaged.

[0134] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A hinge structure, characterized by, The body, the supporting member and the synchronous assembly are included; The supporting member is swingably arranged on the body; The supporting member includes left and right symmetrical left and right supporting members; The synchronous assembly includes a circular arc rotating plate and a synchronous transmission member; The synchronous transmission member is arranged on the body and can only move reciprocally along the direction of the swing center line of the supporting member; The rotating plate includes left and right rotating plates arranged on the left and right sides of the synchronous transmission member respectively; the left and right rotating plates are fixedly connected with the left and right supporting members respectively; A screw transmission pair is arranged between the rotating plate and the synchronous transmission member to realize the conversion and transmission between the swing motion of the supporting member and the rotating plate and the linear motion of the synchronous transmission member; The left screw transmission pair between the left rotating plate and the synchronous transmission member and the right screw transmission pair between the right rotating plate and the synchronous transmission member are opposite in screw direction to realize the synchronous swing of the left and right supporting members.

2. The hinge structure according to claim 1, characterized in that The screw transmission pair includes a screw groove arranged on the rotating plate or the synchronous transmission member and a slider structure arranged on the synchronous transmission member or the rotating plate; the slider structure is slidably inserted into the screw groove to realize the transmission between the rotating plate and the synchronous transmission member.

3. The hinge structure according to claim 2, characterized in that The left and right screw transmission pairs are arranged left and right symmetrically.

4. The hinge structure according to claim 2, characterized in that The left and right screw transmission pairs are arranged asymmetrically.

5. The hinge structure according to claim 2, wherein The same synchronous assembly includes several left and / or right screw transmission pairs; The left and right screw transmission pairs are arranged alternately in the direction of the swing center line.

6. The hinge structure according to claim 2, wherein The synchronous transmission member includes a main body; The main body includes a middle trunk and two side arm spreading parts; The screw transmission pair is arranged between the arm spreading part and the rotating plate.

7. The hinge structure according to claim 6, characterized in that The synchronous transmission member further includes a long tail part; the long tail part is rod-shaped as a whole and is fixedly arranged at the tail of the trunk; the trunk and the long tail part are arranged in the direction of the swing center line as a whole; A temporary clamping structure is arranged between the long tail part and the body to temporarily limit the left and right supporting members and the left and right rotating plates at one or several set opening and closing angles.

8. The hinge structure according to claim 7, characterized in that The temporary clamping structure includes a limiting protrusion arranged on the long tail part or the body and a clamping groove arranged on the body or the long tail part and matched with the limiting protrusion.

9. The hinge structure according to claim 8, characterized in that The limiting protrusion is made of elastic material; when the left and right rotating plates swing, the long tail part is forced to move in the direction of the swing center line through the screw transmission pair and the limiting protrusion is forced to extrude into or out of the clamping groove through the deformation of the elastic material; when the limiting protrusion extrudes into the clamping groove, the left and right rotating plates are temporarily limited at the set opening and closing angles.

10. The hinge structure according to claim 8, characterized in that A clamping plate and an execution spring are further included; The clamping plate is slidably arranged on the body; The clamping plate is provided with the limiting protrusion or the clamping groove; The execution spring is arranged between the clamping plate and the body, and tends to force the clamping plate against the long tail, thereby maintaining the clamping state of the limiting protrusion and the clamping groove.

11. The hinge structure according to claim 10, characterized in that The temporary clamping structure is arranged symmetrically on the left and right sides.

12. The hinge structure of claim 10, wherein, The limiting protrusion or the clamping groove is symmetrically arranged on the left and right sides of the long tail. The two groups of clamping plates and execution springs are symmetrically arranged on the left and right sides of the long tail.

13. The hinge structure of claim 10, wherein, The two clamping plates on the left and right sides tend to move to the middle under the action of the execution spring, thereby clamping the long tail and maintaining the clamping state of the limiting protrusion and the clamping groove.

14. The hinge structure of claim 8, wherein, The temporary clamping structure is arranged on one side, that is, the limiting protrusion or the clamping groove is arranged only on the left side or the right side of the long tail, and only one group of clamping plates and execution springs is arranged on the left side or the right side of the long tail.

15. The hinge structure of claim 1, wherein The clamping plate tends to move to the middle under the action of the execution spring, thereby clamping the long tail between the clamping plate and the body.

16. The hinge structure according to claim 15, characterized in that The limiting protrusion and the clamping groove are provided with a smooth transition structure at both ends in the direction of the swing center line, which is used to guide the limiting protrusion to be clamped into the clamping groove.

17. The hinge structure of claim 15, wherein, It also includes a limiting structure for limiting the synchronous transmission member to be arranged on the body and to be reciprocally movable only along the swing center line of the supporting member.

18. The hinge structure of claim 12, wherein, The limiting structure includes a limiting groove or a limiting track arranged along the swing center line on the body or the synchronous transmission member, and a limiting block arranged on the synchronous transmission member or the body and slidingly inserted into the limiting groove, or a slotted groove slidingly matched with the limiting track.

19. The hinge structure of claim 18, wherein, The limiting structure is a containing groove enclosed by the body or a plurality of components constituting the body, and the containing groove is a long groove arranged along the swing center line, and the synchronous transmission member is slidingly arranged on the body along the containing groove.

20. The hinge structure of claim 19, wherein, The body includes an upper base and a lower base, and in the thickness direction, the lower base, the rotating plate, the main body of the synchronous transmission member, and the upper base are sequentially arranged.

21. The hinge structure of claim 20, wherein, The half shaft rod part is provided with a circular arc working surface on one side of the rotating plate, and the circular arc working surface is matched with the inner side circular arc surface of the rotating plate for limiting when the rotating plate rotates.

22. The hinge structure of claim 19, wherein, In the cross section perpendicular to the half shaft rod part, the curvature of the circular arc working surface is π / 4~π.

23. The hinge structure of claim 19, wherein, The curvature of the circular arc working surface is π / 3~2π / 3.

24. The hinge structure of claim 18, wherein, The half shaft rod part on the lower base is symmetrically arranged on the left and right sides. The bottom of the arm spread part of the main body is provided with a lower circular arc surface; the lower circular arc surface is matched with the outer side circular arc surface of the rotating plate, and the lower circular arc surface and the circular arc working surface of the half shaft rod part enclose an arc-shaped limiting cavity for limiting when the rotating plate rotates. The bottom surface of the main body is in the shape of an inverted figure of eight as a whole, and a long strip-shaped lower protrusion is arranged at the bottom of the trunk part and is inserted between the left rotating plate and the right rotating plate; the two outer side circular arc surfaces of the left rotating plate and the right rotating plate enclose a limiting guide groove arranged along the swing center line; the lower circular arc surfaces on the left and right sides of the long strip-shaped lower protrusion are matched with the two outer side circular arc surfaces for limiting the synchronous transmission member to be reciprocally movable only along the swing center line.

25. The hinge structure of claim 24, wherein, The back of the trunk is provided with a guide strip in the direction of the swing center line, and the upper base is provided with a limiting slot matched with the guide strip, for limiting the synchronous transmission member to move back and forth along the swing center line.

26. The hinge structure of claim 25, wherein, The cross section of the guide strip is rectangular or dovetail type.

27. The hinge structure of claim 25, wherein, The upper base comprises left and right rod members arranged symmetrically, and the left and right rod members are respectively provided with assembly slots for accommodating the two arm spreading parts of the synchronous transmission member.

28. The hinge structure of claim 27, wherein, The left and right rod members are arranged left and right, and the limiting slot is formed in the middle.

29. The hinge structure of claim 27, wherein, The left and right rod members are processed from round rods or square rods.

30. The hinge structure of claim 27, wherein, The long tail part is arranged in the middle interval between the left and right rod members, and the left and right rod members are provided with recesses for accommodating the clamping plates, and the recesses are provided with plug holes for inserting the execution springs.

31. The hinge structure of claim 1, wherein, In the direction of the swing center line, one or more groups of the synchronous assembly are included.

32. The hinge structure of claim 1, wherein, A reset spring is further included, which is arranged between the synchronous transmission member and the body, and tends to force the synchronous transmission member to move back along the direction of the swing center line.

33. The hinge structure according to claim 8 or 32, characterized in that In the direction of the swing center line, the length of the clamping slot is greater than the width of the limiting protrusion, and the clamping slot is provided with a movement allowance, and the limiting protrusion can move in the clamping slot within the movement allowance.

34. The hinge structure of claim 33, wherein, The opening and closing angle of the left and right rotating plates corresponding to the size of the movement allowance is 1-10°.

35. A foldable electronic device with the hinge structure of any one of claims 1-34.

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