Hinge and electronic equipment

Abstract

The invention provides a hinge and electronic equipment, and belongs to the technical field of electronic equipment.The hinge comprises a base, the base is provided with a mounting groove, the mounting groove is provided with a groove opening and a groove bottom, and the groove opening and the groove bottom are oppositely arranged; the swing arm assembly comprises a connecting plate, a rotary connecting part and a first sliding abutting part, the connecting plate and the first sliding abutting part are both connected to the rotary connecting part, and the connecting plate and the first sliding abutting part extend in the opposite directions from the rotary connecting part; the elastic assembly is arranged in the mounting groove and comprises a second sliding abutting part, a movable push plate, a first elastic piece, a second elastic piece and a first abutting block, one end of the first elastic piece abuts against the movable push plate, the other end of the first elastic piece abuts against the groove bottom, one end of the second elastic piece abuts against the groove bottom, and the other end of the second elastic piece abuts against the first abutting block; the first sliding abutting part abuts against the second sliding abutting part. When the swing arm assembly rotates relative to the base, the first sliding abutting part slides relative to the second sliding abutting part.

Description

Technical Field

[0001] The present application belongs to the technical field of electronic equipment, and specifically relates to a hinge and an electronic equipment. Background Art

[0002] At present, flexible screen electronic devices have the problem of screen arching when in the unfolded state. This is because in order to ensure that the hinge can rotate and avoid manufacturing errors, there must be a certain amount of movement between the hinge's swing arm and the base. This results in the swing arm being unable to reach a tensioned state relative to the base, pulling open the screen to offset the arching of the screen. Summary of the invention

[0003] The purpose of the embodiments of the present application is to provide a hinge and an electronic device that can effectively solve the technical problem that there is a certain amount of movement between the swing arm assembly and the base of the hinge, which affects the unfolding effect of the hinge.

[0004] In a first aspect, an embodiment of the present application provides a hinge, comprising:

[0005] A base, the base has a mounting groove, the mounting groove has a groove opening and a groove bottom, and the groove opening and the groove bottom are arranged opposite to each other;

[0006] The swing arm assembly comprises a connecting plate, a rotating connecting portion and a first sliding abutting portion, the connecting plate and the first sliding abutting portion are both connected to the rotating connecting portion, the connecting plate and the first sliding abutting portion extend from the rotating connecting portion in opposite directions respectively, the rotating connecting portion and the first sliding abutting portion are arranged in the mounting groove, the swing arm assembly is rotatably connected to the base through the rotating connecting portion, and when the rotating connecting portion rotates, the first sliding abutting portion rotates in the mounting groove;

[0007] An elastic component is arranged in the installation groove, and the elastic component includes a second sliding abutment portion, a movable push plate, a first elastic member, a second elastic member and a first abutment block. The second sliding abutment portion is arranged on a side of the movable push plate away from the bottom of the groove, one end of the first elastic member abuts against the movable push plate, and the other end abuts against the bottom of the groove, one end of the second elastic member abuts against the bottom of the groove, and the other end abuts against the first abutment block, and the first abutment block is used to abut against the first sliding abutment portion;

[0008] Among them, the first sliding abutment part abuts against the second sliding abutment part; when the swing arm assembly rotates relative to the base, the first sliding abutment part slides relative to the second sliding abutment part, so that the movable push plate moves in the installation groove in a direction close to the groove bottom or away from the groove bottom.

[0009] In a second aspect, an embodiment of the present application provides an electronic device, including:

[0010] a first subject and a second subject; and

[0011] As for the hinge provided in the embodiment of the first aspect, one of the first main body and the swing arm assembly in the hinge is fixedly connected to the connecting plate, and the other of the second main body and the swing arm assembly in the hinge is fixedly connected to the connecting plate.

[0012] In the embodiment of the present application, the hinge includes a base, a swing arm assembly and an elastic assembly. The base has a mounting groove, and the mounting groove has a notch and a bottom groove arranged opposite to each other. The swing arm assembly includes a rotating connection part and a first sliding abutting part. The rotating connection part is rotatably arranged on the base, and the rotating connection part is arranged in the mounting groove. The first sliding abutting part is arranged on the rotating connection part. When the rotating connection part rotates relative to the base, the first sliding abutting part rotates in the mounting groove. The elastic assembly is arranged in the mounting groove, and the elastic assembly is arranged on the bottom of the mounting groove. The elastic assembly includes a second sliding abutting part, a movable push plate and a first elastic member. The second sliding abutting part is arranged on the side of the pushing push plate away from the bottom of the groove. One end of the first elastic member abuts against the movable push plate, and the other end abuts against the bottom of the groove. Thus, the first elastic member can push the movable push plate to move in a direction away from the bottom of the groove. The elastic assembly further includes a second elastic member and a first abutting block. One end of the second elastic member abuts against the bottom of the groove, and the first abutting block is arranged at the other end of the second elastic member. The first abutting block is used to abut against the first sliding abutting part.

[0013] Wherein, the first sliding abutting part abuts against the second sliding abutting part, and when the swing arm assembly rotates relative to the base, the first sliding abutting part slides relative to the second sliding abutting part, so that the movable push plate moves in the mounting groove in a direction close to or away from the bottom of the groove. And the first elastic member is supported between the movable push plate and the bottom of the groove, so that the second sliding abutting part always pushes the first sliding abutting part in a direction away from the bottom of the groove, which plays a role in tensioning the swing arm assembly and the base, and also plays a role in assisting the rotation of the swing arm assembly. And when the swing arm assembly rotates relative to the base to a specific position, the first sliding abutting part abuts against the first abutting block, so as to support the swing arm assembly by using the second elastic member, which plays a role in tensioning the swing arm assembly and the base. Thus, through the first elastic member and the second elastic member, the movement amount between the swing arm assembly and the base is offset. Furthermore, within the tolerance range, the distance between the swing arm assembly and the base is always in the maximum state. Thus, when the hinge is applied to an electronic device, the swing arm assembly can pull the screen, so that the screen is fully unfolded and the arch of the screen is offset.

[0014] Moreover, using two elastic members, namely the first elastic member and the second elastic member, to support the swing arm assembly can reduce the fatigue loss of a single elastic member, improve the service life of the first elastic member and the second elastic member, and improve the service life of the hinge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0016] Figure 1 Shows a schematic diagram of a hinge provided by an embodiment of the present application;

[0017] Figure 2 Shows one of the exploded views of the hinge provided by an embodiment of the present application;

[0018] Figure 3 Shows another exploded view of the hinge provided by an embodiment of the present application;

[0019] Figure 4 Shows a schematic diagram of the base in the hinge provided by an embodiment of the present application;

[0020] Figure 5 Shows a schematic diagram of the cooperation between the second abutting portion and the fourth abutting portion in the hinge provided by an embodiment of the present application;

[0021] Figure 6 Shows a schematic diagram of a part of the elastic component in the hinge provided by an embodiment of the present application;

[0022] Figure 7 Shows one of the schematic diagrams of a part of the structure in the hinge provided by an embodiment of the present application;

[0023] Figure 8 Shows another schematic diagram of a part of the structure in the hinge provided by an embodiment of the present application;

[0024] Figure 9 Shows a third schematic diagram of a part of the structure in the hinge provided by an embodiment of the present application;

[0025] Figure 10 Shows a partial cross-sectional view of the hinge provided by an embodiment of the present application;

[0026] Figure 11 Shows a partial enlarged view of the hinge provided by an embodiment of the present application;

[0027] Figure 12 Shows a partial exploded view of the hinge provided by an embodiment of the present application;

[0028] Figure 13 Shows one of the schematic diagrams of the electronic device provided by an embodiment of the present application;

[0029] Figure 14 Shows another schematic diagram of the electronic device provided by an embodiment of the present application.

[0030] Figures 1 to 14 Reference numerals:

[0031] 100 Hinge, 110 Base, 112 Mounting Groove, 112A First Mounting Groove, 112B Second Mounting Groove, 114 Notch, 116 Bottom of Groove, 118 Guide Projection, 120 Guide Hole, 122 Limit Block, 124 Spacing Portion, 126 Accommodation Chamber, 128 First Tooth Column Hole, 130 Second Tooth Column Hole, 132 Third Tooth Column Hole, 134 Fourth Tooth Column Hole, 136 First Connection Ring, 138 First Limiting Portion, 140 Swing Arm Assembly, 140A First Swing Arm Assembly, 140B Second Swing Arm Assembly, 142 Rotating Connection Portion, 144 First Sliding Contact Portion, 146 Guide Slide Groove, 148 Second Contact Block, 150 Tooth Portion, 152 Connecting Plate, 160 Elastic Component, 160A First Elastic Component, 160B Second Elastic Component, 162 Second Sliding Contact Portion, 164 Movable Push Plate, 166 Avoidance Groove, 168 First Elastic Member, 170 Second Elastic Member, 172 First Contact Block, 174 Lug, 176 Guide Post, 180 Synchronous Transmission Component, 182 First Transmission Plate, 184 First Transmission Tooth, 186 Second Transmission Plate, 188 Second Transmission Tooth, 190 First Tooth Column, 192 Second Tooth Column, 1922 Rotating Shaft, 1924 Second Limiting Portion, 1926 Second Connection Ring, 1928 Third Connection Ring, 194 Third Tooth Column, 196 Fourth Tooth Column, 198 Third Elastic Member, 200 Fourth Elastic Member, 300 Electronic Device, 310 First Main Body, 320 Second Main Body, 330 Screen. Detailed Embodiment

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0033] The terms "first" and "second" in the description and claims of this application may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Combine the following Figures 1 to 14 A hinge 100 and an electronic device 300 according to an embodiment of the present application are described.

[0037] First, as Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of the present application provides a hinge 100, including: a base 110, the base 110 has a mounting groove 112, the mounting groove 112 has a notch 114 and a bottom 116, and the notch 114 and the bottom 116 are oppositely arranged; a swing arm assembly 140, the swing arm assembly 140 includes a connecting plate 152, a rotating connection part 142 and a first sliding abutting part 144, the connecting plate 152 and the first sliding abutting part 144 extend in opposite directions from the rotating connection part 142 respectively, the rotating connection part 142 and the first sliding abutting part 144 are arranged in the mounting groove 112, the swing arm assembly 140 is rotationally connected to the base 110 through the rotating connection part 142, and when the rotating connection part 142 rotates, the first sliding abutting part 144 rotates in the mounting groove 112; an elastic component 160, arranged in the mounting groove 112, the elastic component 160 includes a second sliding abutting part 162, a movable push plate 164, a first elastic member 168, a second elastic member 170 and a first abutting block 172, the second sliding abutting part 162 is arranged on the side of the movable push plate 164 away from the bottom 116, one end of the first elastic member 168 abuts against the movable push plate 164, and the other end abuts against the bottom 116, one end of the second elastic member 170 abuts against the bottom 116, and the other end abuts against the first abutting block 172, and the first abutting block 172 is used for abutting against the first sliding abutting part 144; wherein, the first sliding abutting part 144 and the second sliding abutting part 162 abut; when the swing arm assembly 140 rotates relative to the base 110, the first sliding abutting part 144 slides relative to the second sliding abutting part 162, so that the movable push plate 164 moves in the mounting groove 112 in a direction close to or away from the bottom 116.

[0038] In an embodiment of the present application, the hinge 100 includes a base 110, a swing arm assembly 140, and an elastic assembly 160. The base 110 has a mounting groove 112, and the mounting groove 112 has a relatively arranged notch 114 and a groove bottom 116. The swing arm assembly 140 includes a rotation connection portion 142 and a first sliding contact portion 144. The rotation connection portion 142 is rotatably arranged on the base 110, and the rotation connection portion 142 is arranged in the mounting groove 112. The first sliding contact portion 144 is arranged on the rotation connection portion 142. When the rotation connection portion 142 rotates relative to the base 110, the first sliding contact portion 144 rotates in the mounting groove 112. The elastic assembly 160 is arranged in the mounting groove 112, and the elastic assembly 160 is arranged on the groove bottom 116 of the mounting groove 112. The elastic assembly 160 includes a second sliding contact portion 162, a movable push plate 164, and a first elastic member 168. The second sliding contact portion 162 is arranged on the side of the push plate facing away from the groove bottom 116. One end of the first elastic member 168 abuts against the movable push plate 164, and the other end abuts against the groove bottom 116. Thus, the first elastic member 168 can push the movable push plate 164 to move in a direction away from the groove bottom 116. The elastic assembly 160 further includes a second elastic member 170 and a first abutting block 172. One end of the second elastic member 170 abuts against the groove bottom 116, and the first abutting block 172 is arranged at the other end of the second elastic member 170. The first abutting block 172 is used to abut against the first sliding contact portion 144.

[0039] Wherein, the first sliding contact portion 144 abuts against the second sliding contact portion 162, and when the swing arm assembly 140 rotates relative to the base 110, the first sliding contact portion 144 slides relative to the second sliding contact portion 162, so that the movable push plate 164 moves in the mounting groove 112 in a direction close to or away from the groove bottom 116. And the first elastic member 168 is supported between the movable push plate 164 and the groove bottom 116, so that the second sliding contact portion 162 always pushes the first sliding contact portion 144 in a direction away from the groove bottom 116, which plays a role in tensioning the swing arm assembly 140 and the base 110, and also plays a role in assisting the rotation of the swing arm assembly 140. And when the swing arm assembly 140 rotates relative to the base 110 to a specific position, the first sliding contact portion 144 abuts against the first abutting block 172. Thus, the second elastic member 170 is used to support the swing arm assembly 140, which plays a role in tensioning the swing arm assembly 140 and the base 110. Thus, through the first elastic member 168 and the second elastic member 170, the movement amount between the swing arm assembly 140 and the base 110 is offset. Furthermore, within the tolerance range, the distance between the swing arm assembly 140 and the base 110 is always in the maximum state. Thus, when the hinge 100 is applied to the electronic device 300, the swing arm assembly 140 can pull the screen 330, so that the screen 330 is fully unfolded, and the arching of the screen 330 is offset.

[0040] Among them, the connecting plate 152, the first sliding abutting portion 144, and the rotating connecting portion 142 may be an integral structure.

[0041] Moreover, by using two elastic members, namely the first elastic member 168 and the second elastic member 170, to support the swing arm assembly 140, the fatigue loss of a single elastic member can be reduced, the service life of the first elastic member 160 and the second elastic member 170 can be extended, and the service life of the hinge 100 can be improved.

[0042] Optionally, the installation groove 112 is a through groove, and the installation groove 112 conducts through the base 110 along the fourth direction OY.

[0043] As Figure 2 and Figure 3 shown, as a possible implementation manner, the side wall of the installation groove 112 has a guiding protrusion 118. The guiding protrusion 118 is located between the groove bottom 116 and the groove opening 114. The rotating connecting portion 142 includes a guiding sliding groove 146. The guiding protrusion 118 and the guiding sliding groove 146 are in sliding engagement. Both the guiding protrusion 118 and the guiding sliding groove 146 are arc-shaped structures. When the guiding protrusion 118 and the guiding sliding groove 146 slide relative to each other, the swing arm assembly 140 rotates relative to the base 110.

[0044] Specifically, the side wall of the installation groove 112 has a guiding protrusion 118. The guiding protrusion 118 is located between the groove bottom 116 and the groove opening 114. The rotating connecting portion 142 includes a guiding sliding groove 146. The guiding protrusion 118 and the guiding sliding groove 146 are in sliding engagement, so that the rotating connecting portion 142 can rotate relative to the base 110. Both the guiding protrusion 118 and the guiding sliding groove 146 are arc-shaped structures, thereby increasing the contact area between the rotating connecting portion 142 and the base 110 and improving the reliability of the rotational connection between the rotating connecting portion 142 and the base 110. When the guiding protrusion 118 and the guiding sliding groove 146 slide relative to each other, the swing arm assembly 140 rotates relative to the base 110, thereby realizing the rotation of the swing arm assembly 140 relative to the base 110.

[0045] That is, the guiding protrusions 118 are integrally formed on both sides of the installation groove 112, and the guiding sliding grooves 146 are integrally formed at both ends of the swing arm assembly 140. The guiding protrusions 118 and the guiding sliding grooves 146 cooperate to enable the swing arm assembly 140 to rotate around the center of the arc of the guiding protrusion 118.

[0046] As Figure 1 、 Figure 2 、 Figure 3 and Figure 6As shown, as a possible implementation, the movable push plate 164 and the second sliding abutting portion 162 are provided with an avoidance groove 166. The avoidance groove 166 penetrates the movable push plate 164 and the second sliding abutting portion 162 from the groove bottom 116 to the groove opening 114. The first abutting block 172 can slide in the installation groove 112 closer to or farther from the groove opening 114. Among them, the first sliding abutting portion 144 includes a second abutting block 148. The second abutting block 148 protrudes. The second abutting block 148 and the first abutting block 172 are arranged opposite to each other. When the second abutting block 148 passes through the avoidance groove 166, it abuts against the first abutting block 172.

[0047] Specifically, the movable push plate 164 and the second sliding abutting portion 162 are provided with an avoidance groove 166. The avoidance groove 166 penetrates the movable push plate 164 and the second sliding abutting portion 162 from the groove bottom 116 to the groove opening 114. The avoidance groove 166 avoids the first abutting block 172, so that the first abutting block 172 can move closer to or farther from the groove bottom 116 along the avoidance groove 166. The first sliding abutting portion 144 of the swing arm assembly 140 includes a second abutting block 148. The second abutting block 148 protrudes. The second abutting block 148 and the first abutting block 172 are arranged opposite to each other. When the second abutting block 148 passes through the avoidance groove 166, it abuts against the first abutting block 172. Thus, by cooperating with the first elastic member 168 and the second elastic member 170, the fatigue loss of the elastic member is reduced.

[0048] For example: during the rotation of the swing arm assembly 140 and the base 110, the first elastic member 168 supports the swing arm assembly 140 through the movable push plate 164 and the second sliding abutting portion 162, and assists the relative rotation of the swing arm assembly 140 and the base 110. When the swing arm assembly 140 rotates to the extreme position away from the base 110, that is, when the electronic device 300 is fully unfolded, the second elastic member 170 supports the swing arm assembly 140 to ensure the flatness of the screen 330 of the electronic device 300. As above, two elastic members are used in the two states to reduce the fatigue of the first elastic member 168, improve the service life of the first elastic member 168, and improve the reliability and stability of the hinge 100.

[0049] Specifically, due to the displacement difference in the bending area between the swing arm assembly 140 and the base 110 in the folded and unfolded states, after the screen 330 is bent for a long time, the screen 330 at the connection between the swing arm assembly 140 and the base 110 is prone to arching and other wrinkling conditions when the electronic device 300 is fully unfolded, thus affecting the flatness of the screen 330 of the electronic device 300 in the unfolded state.

[0050] In related technologies, there is usually only one elastic component in a hinge. This elastic component is responsible for both assisting the rotation of a rotating member and assisting in supporting the rotating member. With long-term frequent compression actions, the elastic component continuously bears stress, which easily leads to fatigue. As the usage time increases, the elastic force of the elastic component gradually weakens, resulting in insufficient power when driving the rotating member. This not only affects the unfolding effect of the screen, making the screen uneven in the unfolded state, but also reduces the display performance of the electronic device, seriously affecting the user experience.

[0051] However, in this application, two elastic members are provided, namely a first elastic member 168 and a second elastic member 170. The first elastic member 168 assists the rotation of the swing arm assembly 140, and the second elastic member 170 supports the swing arm assembly 140, reducing the possibility of fatigue of the first elastic member 168, thereby ensuring the reliability of the hinge 100.

[0052] Optionally, the stiffness of the first elastic member 168 is less than the stiffness of the second elastic member 170, so as to ensure that the first elastic member 168 has less influence on the rotation of the swing arm assembly 140, avoiding the risks brought by the rapid rotation of the swing arm assembly 140, and ensuring that the second elastic member 170 can provide a reliable supporting force for the swing arm assembly 140, ensuring the flatness of the screen 330 of the electronic device 300.

[0053] That is, by adopting a low-stiffness design for the first elastic member 168, which is responsible for the unfolding action of the hinge 100 and provides a certain degree of support, the first elastic member 168 can provide a soft and stable thrust to achieve initial unfolding. The second elastic member 170 adopts a high-stiffness design. Only when the swing arm assembly 140 and the base 110 rotate to the limit state, the swing arm assembly 140 squeezes the second elastic member 170, causing the second elastic member 170 to be in a compressed state, and the second elastic member 170 provides an additional thrust for the swing arm assembly 140, thereby avoiding the arching phenomenon of the screen 330.

[0054] This difference directly solves the problems in related technologies that the elastic component is prone to fatigue and the weakening of the elastic force affects the screen unfolding effect, plays a key role in improving the flattening effect and flatness of the screen, enhancing the durability of the elastic component, and helps to extend the service life of the hinge.

[0055] Such as Figure 2 、 Figure 3 and Figure 5As shown, as a possible implementation, the side of the first abutment block 172 facing the swing arm assembly 140 is a plane, the side of the second abutment block 148 away from the rotating connection part 142 is a plane, and the abutment between the second abutment block 148 and the first abutment block 172 is a fit between planes; the side of the first sliding abutment part 144 away from the rotating connection part 142 has a curved surface, and the side of the second sliding abutment part 162 facing the swing arm assembly 140 is a curved surface, and during the rotation of the swing arm assembly 140, the abutment between the first sliding abutment part 144 and the second sliding abutment part 162 is a fit between curved surfaces.

[0056] Specifically, the side of the first abutment block 172 facing the swing arm assembly 140 is a plane, and the side of the second abutment block 148 away from the rotating connection part 142 is a plane. When the first abutment block 172 and the second abutment block 148 abut against each other, the plane of the first abutment block 172 and the plane of the second abutment block 148 are in contact and cooperate with each other, thereby improving the stability of the abutment between the first abutment block 172 and the second abutment block 148, and improving the stability of the second elastic member 170 supporting the swing arm assembly 140.

[0057] The number of the first abutting blocks 172 may be one or at least two, the number of the second abutting blocks 148 may be one or at least two, and the number of the first abutting blocks 172 and the number of the second abutting blocks 148 are the same.

[0058] As described above, when the swing arm assembly 140 rotates to the extreme position away from the base 110, that is, when the electronic device 300 is fully unfolded, the first abutment block 172 and the second abutment block 148 abut against each other, and compress the second elastic member 170, so that the second elastic member 170 pushes the swing arm assembly 140 to move in the direction away from the base 110 to eliminate the arching phenomenon of the screen 330.

[0059] Specifically, the first sliding abutment 144 has a curved surface on the side facing away from the rotating connection portion 142, and the second sliding abutment 162 has a curved surface on the side facing the swing arm assembly 140. The curved surface of the first sliding abutment 144 and the curved surface of the second sliding abutment 162 abut against each other, and thus during the rotation of the swing arm assembly 140 and the base 110, the first sliding abutment 144 and the second sliding abutment 162 are matched through the curved surfaces, thereby ensuring that the swing arm assembly 140 can rotate smoothly and ensuring the stability of the rotation of the swing arm assembly 140.

[0060] The number of the first sliding abutment portions 144 may be one or at least two, and the number of the second sliding abutment portions 162 is the same as the number of the first sliding abutment portions 144 .

[0061] The second abutment block 148 is protruded from the middle position of the curved surface.

[0062] Optionally, the second abutting block 148 may be located between the two first sliding abutting portions 144.

[0063] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, as a possible implementation, the side of the movable push plate 164 facing the bottom of the groove 116 has a plurality of guide posts 176. The guide posts 176 extend towards the bottom of the groove 116. The bottom of the groove 116 has guide holes 120. One end of the guide post 176 is inserted into the guide hole 120. The number of the first elastic members 168 is multiple, and the first elastic members 168 are sleeved on the guide posts 176.

[0064] Specifically, the elastic component 160 further includes guide posts 176 provided on the movable push plate 164. The guide posts 176 are provided on the side of the movable push plate 164 facing the bottom of the groove 116. The first elastic members 168 are sleeved on the guide posts 176. The guide posts 176 extend towards the bottom of the groove 116. The bottom of the groove 116 has guide holes 120. One end of the guide post 176 is inserted into the guide hole 120, so as to ensure that the force exerted by the first elastic members 168 on the movable push plate 164 always follows the direction from the bottom of the groove 116 to the notch 114 through the guidance of the guide posts 176, thereby ensuring the stability of the swing arm assembly 140 during the rotation process.

[0065] Moreover, the number of the first elastic members 168 is multiple, and the number of the guide posts 176 is multiple, which further improves the stability of the first elastic members 168 in pushing the swing arm assembly 140 and makes the force on the movable push more balanced, avoiding phenomena such as deflection of the movable push plate 164.

[0066] As Figure 1 , Figure 2 and Figure 3 shown, as a possible implementation, the side wall of the installation groove 112 has a limit block 122. The limit block 122 is located between the bottom of the groove 116 and the notch 114. The movable push plate 164 has a lug 174. The lug 174 is located between the limit block 122 and the bottom of the groove 116. The limit block 122 limits the movement range of the movable push plate 164 in the installation groove 112 by abutting against the lug 174.

[0067] Specifically, the side wall of the installation groove 112 is provided with a limiting block 122. The limiting block 122 is located between the groove bottom 116 and the groove opening 114. The movable push plate 164 is provided with a lug 174. The lug 174 is located between the limiting block 122 and the groove bottom 116. Thus, when the swing arm assembly 140 rotates to the first predetermined position, the first elastic member 168 pushes the movable push plate 164, so that the limiting block 122 abuts against the lug 174, restricting the movable push plate 164 from continuing to move towards the groove opening 114 and restricting the moving range of the movable push plate 164 in the installation groove 112. Thereby ensuring that only the first abutting block 172 and the second abutting block 148 abut against each other at this position, reducing the force on the first elastic member 168 and enhancing the service life of the first elastic member 168.

[0068] Optionally, at least two limiting blocks 122 are oppositely arranged on the groove wall of the installation groove 112 to respectively stop the lugs 174 on both sides of the movable push plate 164. When the swing arm assembly 140 rotates to the extreme position away from the base 110, the lugs 174 abut against the limiting blocks 122, thereby ensuring that the first elastic member 168 can be limited. Among them, there are two limiting blocks 122, and the two limiting blocks 122 are respectively located on both sides of the installation groove 112. Along the direction from one limiting block 122 to the other limiting block 122, the dimension of the part after removing the lug 174 is less than or equal to two-thirds of the dimension of the installation groove 112.

[0069] Such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, an installation groove 112 is provided on the base 110. The installation groove 112 is a through groove. A part of the installation groove 112 between the limit block 122 and the notch 114 is used to arrange the swing arm assembly 140, and a part of the installation groove 112 between the limit block 122 and the groove bottom 116 is used to arrange the elastic component 160. The swing arm assembly 140 includes a rotating connection part 142 and at least one first sliding abutting part 144 and at least one second abutting block 148 arranged on the rotating connection part 142. One ends of the first sliding abutting part 144 and the second abutting block 148 extend in a direction away from the rotating connection part 142. The swing arm assembly 140 is rotatably connected to the base 110. The elastic component 160 is arranged in the installation groove 112. The elastic component 160 includes a first elastic member 168, a movable push plate 164 and a second sliding abutting part 162. The first elastic member 168 assists the rotation of the swing arm assembly 140 through the movable push plate 164 and the second sliding abutting part 162. The elastic component 160 further includes a second elastic member 170 and a first abutting block 172. The second elastic member 170 applies an elastic force to the swing arm assembly 140 through the first abutting block 172 to expand the arched part on the surface of the expansion screen 330. The movable push plate 164 is generally in the shape of a rectangular plate and has two protruding ears 174. The movable push plate 164 can slide in the installation groove 112 along the direction of the groove bottom 116 and the notch 114. A guide post 176 is arranged on the side of the movable push plate 164 facing away from the swing arm assembly 140. The guide post 176 and the movable push plate 164 can be integrally formed. The guide post 176 is a circular short rod that penetrates the base 110 and can slide in the base 110. The outer wall of the guide post 176 is sleeved with the first elastic member 168. Through the elastic force of the first elastic member 168, the movable push plate 164 drives the second sliding abutting part 162 to move towards the first sliding abutting part 144, so that the side of the swing arm assembly 140 facing away from the base 110 moves. Further, an avoidance groove 166 is provided on the movable push plate 164 and the second sliding abutting part 162. The avoidance groove 166 is communicated along the direction from the groove bottom 116 to the notch 114. A second elastic member 170 is fixedly installed at a position corresponding to the avoidance groove 166 on the groove bottom 116 of the installation groove 112. A first abutting block 172 is arranged on the side of the second elastic member 170 facing away from the groove bottom 116. The first abutting block 172 can slide in the avoidance groove 166 close to or away from the groove bottom 116. Moreover, the rigidity of the first elastic member 168 and the second elastic member 170 is different.

[0070] This application adopts a cooperative working mode of the first elastic member 168 and the second elastic member 170.

[0071] The first elastic member 168 is designed with a low stiffness, and its main function is to be responsible for the rotational movement of the swing arm assembly 140 and the base 110. During the rotation of the swing arm assembly 140 and the base 110, the first elastic member 168 takes the lead in playing a role, providing a relatively gentle and stable thrust to push the swing arm assembly 140 to move, realizing the initial deployment of the swing arm assembly 140 and the base 110. One end of the first elastic member 168 is tightly abutted against the bottom 116 of the installation groove 112. Specifically, the first elastic member 168 can be fixed in a pre-designed groove at the bottom of the installation groove 112 to ensure that there is no displacement during the working process. The other end is connected to the movable push plate 164 to provide power for the movable push plate 164.

[0072] The second elastic member 170 is designed with a high stiffness, and the second elastic member 170 only plays a role when the swing arm assembly 140 rotates to the extreme position away from the base 110. When the swing arm assembly 140 rotates to a specific position close to the extreme position, the second abutting block 148 on the swing arm assembly 140 will contact the first abutting block 172, and the first abutting block 172 is stressed to compress the second elastic member 170. One end of the second elastic member 170 is also fixed on the bottom 116 of the installation groove 112. After the second elastic member 170 is triggered and compressed, it will provide a powerful additional thrust to ensure that the swing arm assembly 140 moves away from the base 110, so as to ensure that the screen 330 can be fully flattened and effectively eliminate the possible arching phenomenon.

[0073] The width of the movable push plate 164 is two-thirds of the width of the installation groove 112. Lugs 174 extend from both sides of the top of the movable push plate 164. At the positions corresponding to the lugs 174 in the installation groove 112, limiting blocks 122 are integrally formed. Through the cooperation of the lugs 174 and the limiting blocks 122, a limit is formed to prevent the movable push plate 164 from excessively lifting the swing arm assembly 140.

[0074] Wherein, a second sliding abutting portion 162 is integrally formed at one end of the movable push plate 164 facing the swing arm assembly 140. The end of the second sliding abutting portion 162 facing the swing arm assembly 140 is an arc surface. Correspondingly, on one side of the swing arm assembly 140 facing the second sliding abutting portion 162, there is a first sliding abutting portion 144. On the side of the first sliding abutting portion 144 facing the second sliding abutting portion 162, an arc surface matching the second sliding abutting portion 162 is provided. Moreover, the second sliding abutting portion 162 is wider at the bottom and narrower at the top, and the first sliding abutting portion 144 is narrower at the bottom and wider at the top, ensuring that no additional interference occurs between the first sliding abutting portion 144 and the second sliding abutting portion 162 when the swing arm assembly 140 rotates.

[0075] Corresponding to the first abutting block 172, a second abutting block 148 is provided at the middle position of the first sliding abutting portion 144. The second abutting block 148 is a rectangular block and protrudes from the arc surface of the first sliding abutting portion 144. When the swing arm assembly 140 rotates to the extreme position away from the base 110, the second elastic member 170 pushes the first abutting block 172 to abut against the second abutting block 148 across the avoidance groove 166, thereby providing a more stable thrust force.

[0076] As Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 13 shown, as a possible implementation manner, along the first direction XO, two mounting grooves 112 are provided on the base 110, namely a first mounting groove 112A and a second mounting groove 112B. The notch 114 of the first mounting groove 112A and the notch 114 of the second mounting groove 112B are respectively located on two opposite sides of the base 110; the number of swing arm assemblies 140 is two, namely a first swing arm assembly 140A and a second swing arm assembly 140B; the number of elastic assemblies 160 is two, namely a first elastic assembly 160A and a second elastic assembly 160B; the first swing arm assembly 140A and the first elastic assembly 160A are arranged in the first mounting groove 112A, and the second swing arm assembly 140B and the second elastic assembly 160B are arranged in the second mounting groove 112B; the base 110 includes a spacing portion 124 located between the first mounting groove 112A and the second mounting groove 112B, and the spacing portion 124 has a receiving cavity 126; wherein, the hinge 100 further includes a synchronous transmission assembly 180, and the receiving cavity 126 is used for receiving the synchronous transmission assembly 180. The synchronous transmission assembly 180 is in transmission connection with the first swing arm assembly 140A and the second swing arm assembly 140B, and the synchronous transmission assembly 180 is used to make the first swing arm assembly 140A and the second swing arm assembly 140B rotate synchronously.

[0077] Specifically, along the first direction XO, the base 110 is provided with two mounting grooves 112, namely, a first mounting groove 112A and a second mounting groove 112B. The number of the swing arm assemblies 140 is two, namely, a first swing arm assembly 140A and a second swing arm assembly 140B. The first swing arm assembly 140A is arranged in the first mounting groove 112A, and the second swing arm assembly 140B is arranged in the second mounting groove 112B. The number of the elastic assemblies 160 is two, namely, a first elastic assembly 160A and a second elastic assembly 160 B, the first elastic member 168 is arranged in the first installation groove 112A and cooperates with the first swing arm assembly 140A, the second elastic assembly 160B is arranged in the second installation groove 112B and cooperates with the second swing arm assembly 140B, the notch 114 of the first installation groove 112A and the notch 114 of the second installation groove 112B are respectively located on two opposite sides of the base 110, so that the first swing arm assembly 140A and the second swing arm assembly 140B can rotate in opposite directions, thereby realizing the unfolding and folding of the electronic device 300.

[0078] The hinge 100 also includes a synchronous transmission assembly 180. The base 110 includes a spacer 124 between the first mounting groove 112A and the second mounting groove 112B. The spacer 124 has a receiving cavity 126. At least a portion of the synchronous transmission assembly 180 is disposed in the receiving cavity 126. The synchronous transmission assembly 180 is transmission-connected to the first swing arm assembly 140A and the second swing arm assembly 140B, so that the first swing arm assembly 140A and the second swing arm assembly 140B rotate synchronously, ensuring that the tension applied to various parts of the screen 330 is consistent, thereby improving the flatness and display effect of the screen 330.

[0079] like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 13As shown, as a possible implementation, the surface of the rotating connection portion 142 is provided with a tooth portion 150, and the tooth portion 150 is distributed in an arc shape. The synchronous transmission assembly 180 includes: a first transmission plate 182 disposed in the accommodation cavity 126, the first transmission plate 182 being movable along the second direction OZ or the third direction ZO, the second direction OZ and the third direction ZO being two opposite directions, and the first transmission plate 182 having a first transmission tooth 184 thereon; a second transmission plate 186 disposed in the accommodation cavity 126, the second transmission plate 186 being movable along the second direction OZ or the third direction ZO, the second transmission plate 186 having a second transmission tooth 188 thereon, and along the fourth direction OY, the first transmission tooth 184 and the second transmission tooth 188 are oppositely disposed, the fourth direction OY being a direction perpendicular to the second direction OZ and the third direction ZO; a first tooth column 190 located on the side of the first transmission plate 182 facing the second transmission plate 186, one end of the first tooth column 190 being engaged with the first transmission tooth 184 and the other end being engaged with the tooth portion 150 of the first swing arm assembly 140A; a second tooth column 192 located between the first transmission plate 182 and the second transmission plate 186, the second tooth column 192 being engaged with the first transmission tooth 184 and the second transmission tooth 188; a third tooth column 194 located on the side of the second transmission plate 186 facing the first transmission plate 182, the third tooth column 194 being engaged with the second transmission tooth 188; a fourth tooth column 196, one end of which is engaged with the third tooth column 194 and the other end is engaged with the tooth portion 150 of the second swing arm assembly 140B, wherein the first tooth column 190, the second tooth column 192, the third tooth column 194 and the fourth tooth column 196 are distributed along the second direction OZ; the first transmission plate 182 and the second transmission plate 186 slide in opposite directions under the transmission of the first tooth column 190, the second tooth column 192 and the third tooth column 194.

[0080] Specifically, the surface of the rotating connection portion 142 is provided with a tooth portion 150, and the tooth portion 150 is distributed in an arc shape. The synchronous transmission assembly 180 includes: a first transmission plate 182, a second transmission plate 186, a first tooth column 190, a second tooth column 192, a third tooth column 194 and a fourth tooth column 196.

[0081] Wherein, the first transmission plate 182 is slidably disposed in the accommodation cavity 126, the first transmission plate 182 being movable along the second direction OZ or the third direction ZO, the second direction OZ and the third direction ZO being two opposite directions, and the first direction XO being perpendicular to the second direction OZ and the third direction ZO. The second transmission plate 186 is slidably disposed in the accommodation cavity 126, the second transmission plate 186 being movable along the second direction OZ or the third direction ZO. The first transmission plate 182 and the second transmission plate 186 are distributed along the fourth direction OY, the first transmission plate 182 having a first transmission tooth 184 thereon, the second transmission plate 186 having a second transmission tooth 188 thereon, and the first transmission tooth 184 and the second transmission tooth 188 being oppositely disposed.

[0082] The first tooth column 190 is disposed on the side of the first transmission plate 182 facing the second transmission plate 186. One end of the first tooth column 190 is engaged with the first transmission tooth 184, and the other end of the first tooth column 190 is engaged with the tooth portion 150 of the first swing arm assembly 140A; the second tooth column 192 is disposed between the first transmission plate 182 and the second transmission plate 186. The second tooth column 192 is engaged with the first transmission plate 182, and the second tooth column 192 is also engaged with the second transmission plate 186; the second tooth column 192 is disposed on the side of the second transmission plate 186 facing the first transmission plate 182, and the third tooth column 194 is engaged with the second transmission tooth 188; one end of the fourth tooth column 196 is engaged with the third tooth column 194, and the other end of the fourth tooth column 196 is engaged with the tooth portion 150 of the second swing arm assembly 140B.

[0083] Through the above transmission, the synchronous movement of the first swing arm assembly 140A and the second swing arm assembly 140B is achieved. Specifically, when the first swing arm assembly 140A rotates, the tooth portion 150 of the first swing arm assembly 140A drives the first tooth column 190 to rotate. The first tooth column 190 drives the first transmission plate 182 to slide. The first transmission plate 182 drives the second tooth column 192 to rotate. The second tooth column 192 drives the second transmission plate 186 to slide. The second transmission plate 186 drives the third tooth column 194 to rotate. The third tooth column 194 drives the fourth tooth column 196 to rotate. The fourth tooth column 196 drives the second swing arm assembly 140B to rotate by driving the tooth portion 150 of the second swing arm assembly 140B. The above transmission method is mutual between the first tooth column 190 and the fourth tooth column 196. That is, when the first swing arm assembly 140A drives the second swing arm assembly 140B to rotate, the second swing arm assembly 140B also drives the first swing arm assembly 140A to rotate, thereby realizing the synchronous movement of the first swing arm assembly 140A and the second swing arm assembly 140B, ensuring uniform force on the screen 330 during the unfolding and folding of the electronic device 300, reducing the possibility of wrinkles and other conditions on the screen 330, and improving the flatness of the screen 330.

[0084] Of course, in other embodiments of the present application, the synchronous component may also be a structure such as a chain or a transmission belt.

[0085] Such as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 7 and Figure 13As shown, as a possible implementation, on the side of the spacer portion 124 facing the first mounting groove 112A, there is a first tooth post hole 128. The first tooth post hole 128 communicates with the accommodation cavity 126 and the first mounting groove 112A. The first tooth post 190 is inserted into the first mounting groove 112A through the first tooth post hole 128; the spacer portion 124 has a second tooth post hole 130 and a third tooth post hole 132. The second tooth post hole 130 communicates with the accommodation cavity 126, and the third tooth post hole 132 communicates with the accommodation cavity 126. The second tooth post 192 is inserted into the second tooth post hole 130, and the third tooth post 194 is inserted into the third tooth post hole 132; on the side of the spacer portion 124 facing the second mounting groove 112B, there is a fourth tooth post hole 134. The fourth tooth post hole 134 communicates with the accommodation cavity 126 and the second mounting groove 112B. The fourth tooth post 196 is inserted into the second mounting groove 112B through the fourth tooth post hole 134.

[0086] Specifically, the spacer portion 124 has a first tooth post hole 128, a second tooth post hole 130, a third tooth post hole 132, and a fourth tooth post hole 134; the first tooth post hole 128 is located on the side of the spacer portion 124 facing the first mounting groove 112A. The first tooth post hole 128 communicates with the accommodation cavity 126 and the first mounting groove 112A. The first tooth post 190 is inserted into the first mounting groove 112A through the first tooth post hole 128, so that one end of the first tooth post 190 meshes with the first transmission tooth 184, and the other end of the first tooth post 190 meshes with the tooth portion 150 of the first swing arm assembly 140A; the second tooth post hole 130 communicates with the accommodation cavity 126. The second tooth post 192 is inserted into the second tooth post hole 130 and cooperates with the first transmission plate 182 and the second transmission plate 186; the third tooth post hole 132 communicates with the accommodation cavity 126. The third tooth post 194 is inserted into the third tooth post hole 132 and cooperates with the second transmission plate 186; the fourth tooth post hole 134 is located on the side of the spacer portion 124 facing the second mounting groove 112B. The fourth tooth post hole 134 communicates with the accommodation cavity 126 and the second mounting groove 112B. The fourth tooth post 196 is inserted into the second mounting groove 112B through the fourth tooth post hole 134, so that one end of the fourth tooth post 196 meshes with the third tooth post 194, and the other end of the fourth tooth post 196 meshes with the tooth portion 150 of the second swing arm assembly 140B. Through the cooperation of the above tooth portion 150, gears and transmission plates, the lateral displacements of the first swing arm assembly 140A and the second swing arm assembly 140B are synchronized. That is, the first swing arm assembly 140A and the second swing arm assembly 140B rotate synchronously, solving the technical problem of the non-synchronization of the first swing arm assembly 140A and the second swing arm assembly 140B caused by manufacturing tolerances and wear, and solving the problem of local wrinkles of the screen 330, thereby improving the flatness and display effect of the screen 330.

[0087] Moreover, the limitation of the tooth post by the tooth post hole makes the transmission of the entire synchronous transmission assembly 180 more stable.

[0088] As shown in Figure 10 , Figure 11 and Figure 12 As a possible implementation, a first connection ring 136 is provided on the spacer portion 124, a first limiting portion 138 is provided on the first connection ring 136, a second limiting portion 1924 is provided at the end of the second tooth post 192, a rotating shaft 1922 is inserted at the end of the second tooth post 192, and the first limiting portion 138 and the second limiting portion 1924 are adapted to limit the rotation angle of the second tooth post 192.

[0089] Specifically, a first connection ring 136 is provided on the spacer portion 124, a first limiting portion 138 is provided on the first connection ring 136, a second limiting portion 1924 is provided at the end of the second tooth post 192, a rotating shaft 1922 is inserted at the end of the second tooth post 192. Furthermore, the second tooth post 192 rotates around the rotating shaft 1922 as the rotation center, and the first limiting portion 138 and the second limiting portion 1924 are adapted to limit the rotation angle of the second tooth post 192.

[0090] Wherein, a second connection ring 1926 and a third connection ring 1928 are provided on the rotating shaft 1922. The second connection ring 1926 connects the rotating shaft 1922 and the second tooth post 192, and the third connection ring 1928 connects the rotating shaft 1922 and the first connection ring 136, thereby ensuring the stability of the rotation of the second tooth post 192.

[0091] As shown in Figure 8 and Figure 9 As a possible implementation, the synchronous transmission assembly 180 further includes: a third elastic member 198 provided in the accommodation cavity 126, one end of the third elastic member 198 abuts against the cavity wall of the accommodation cavity 126, and the other end abuts against the first transmission plate 182. The third elastic member 198 and the first transmission plate 182 are distributed along the second direction OZ; a fourth elastic member 200 provided in the accommodation cavity 126, one end of the fourth elastic member 200 abuts against the cavity wall of the accommodation cavity 126, and the other end abuts against the second transmission plate 186. The fourth elastic member 200 and the second transmission plate 186 are distributed along the third direction ZO; wherein, the third elastic member 198 and the fourth elastic member 200 are in a compressed state during the rotation of the swing arm assembly 140.

[0092] Specifically, the synchronous transmission assembly 180 further includes a third elastic member 198 and a fourth elastic member 200 disposed in the accommodation cavity 126. One end of the third elastic member 198 abuts against the cavity wall of the accommodation cavity 126, and the other end abuts against the first transmission plate 182. The third elastic member 198 and the first transmission plate 182 are distributed along the second direction OZ. One end of the fourth elastic member 200 abuts against the cavity wall of the accommodation cavity 126, and the other end abuts against the second transmission plate 186. The fourth elastic member 200 and the second transmission plate 186 are distributed along the third direction ZO. During the rotation of the swing assembly and the base 110, the third elastic member 198 and the fourth elastic member 200 are in a compressed state. The third elastic member 198 is balanced with the first elastic member 168 in the first elastic assembly 160A, and the fourth elastic member 200 is balanced with the first elastic member 168 in the second elastic assembly 160B, so that the first swing arm assembly 140A and the second swing arm assembly 140B can hover at any position.

[0093] Among them, the third elastic member 198 is a spring, and the stiffness of the third elastic member 198 is the same as that of the first elastic member 168; the fourth elastic member 200 is a spring, and the stiffness of the fourth elastic member 200 is the same as that of the first elastic member 168.

[0094] Specifically, due to the limitations of the manufacturing process, there are inevitable tolerances in the dimensions, shapes, and masses of the swing arm assemblies 140. During long-term use, the wear degrees of the swing arm assemblies 140 will also be different. These factors make it difficult for the multiple swing arm assemblies 140 to maintain synchronization during movement. When the swing arm assemblies 140 are not synchronized, the pulling forces received by the screen 330 at different positions are inconsistent, easily causing local wrinkles, which seriously affect the flatness and display effect of the screen 330.

[0095] Optionally, when the hinge 100 is unfolded, the swing arm assembly 140 drives the first transmission plate 182 to move in the third direction ZO, squeezing the third elastic member 198. The swing arm assembly 140 drives the second transmission plate 186 to move in the second direction OZ, squeezing the fourth elastic member 200. When the hinge 100 is folded, the swing arm assembly 140 drives the first transmission plate 182 to move in the second direction OZ, and the swing arm assembly 140 drives the second transmission plate 186 to move in the third direction ZO.

[0096] Such as Figure 1 、 Figure 2 and Figure 3As shown, in the present application, a receiving cavity 126 is provided on the spacing portion 124 of the base 110. The receiving cavity 126 is located between the first swing arm assembly 140A and the second swing arm assembly 140B. A synchronous transmission assembly 180 is provided in the receiving cavity 126. The base 110 forms the housing of the synchronous transmission assembly 180. A first tooth column hole 128 communicating the receiving cavity 126 and the first mounting groove 112A is further provided on the spacing portion 124. The first tooth column hole 128 extends to the surface of the spacing portion 124. A second tooth column hole 130 communicating the receiving cavity 126 and the second mounting groove 112B is further provided on the spacing portion 124. The second tooth column hole 130 extends to the surface of the spacing portion 124, thus facilitating assembly. A second tooth column hole 130 and a third tooth column hole 132 are further provided on the spacing portion 124. The second tooth column hole 130 communicates with the receiving cavity 126, and the third tooth column hole 132 communicates with the receiving cavity 126.

[0097] Among them, the base 110 can be split. A part of the spacing portion 124 has a receiving cavity 126, as well as a part of the first tooth column hole 128, the second tooth column hole 130, the third tooth column hole 132 and the fourth tooth column hole 134. Another part of the spacing portion 124 has another part of the first tooth column hole 128, the second tooth column hole 130, the third tooth column hole 132 and the fourth tooth column hole 134.

[0098] A first tooth column 190 is provided in the first tooth column hole 128. The first tooth column 190 meshes with the first transmission plate 182 and the tooth portion 150 of the first swing arm assembly 140A. A second tooth column 192 is provided in the second tooth column hole 130. The second tooth column 192 meshes with the first transmission plate 182 and the second transmission plate 186. A third tooth column 194 is provided in the third tooth column hole 132. The third tooth column 194 meshes with the second transmission plate 186. A fourth tooth column 196 is provided in the fourth tooth column hole 134. The fourth tooth column 196 meshes with the third tooth column 194 and the tooth portion 150 of the second swing arm assembly 140B.

[0099] A first drive plate 182 and a second drive plate 186 are arranged in the accommodation cavity 126. The first drive plate 182 and the second drive plate 186 are slidable. The first drive plate 182 and the second drive plate 186 are respectively arranged at the upper and lower parts of the second tooth column 192. Moreover, both the first drive plate 182 and the second drive plate 186 are engaged with the second tooth column 192. In order to prevent the second drive plate 186 from interfering with the fourth tooth column 196 during movement, the third tooth column 194 extends additionally towards the second drive plate 186, so that the part of the second drive plate 186 engaged with the third tooth column 194 does not interfere with the fourth gear. Therefore, when the first swing arm assembly 140A rotates, it is transmitted to the tooth part 150 of the second swing arm assembly 140B through the tooth part 150, the first tooth column 190, the first drive plate 182, the second tooth column 192, the second drive plate 186, the third tooth column 194 and the fourth tooth column 196, thereby realizing the synchronous rotation of the first swing arm assembly 140A and the second swing arm assembly 140B.

[0100] A first drive plate 182 and a second drive plate 186 are arranged inside the base 110. The first drive plate 182 and the second drive plate 186 are made of high-strength metal materials and have a high-precision tooth profile structure. The first drive plate 182 and the second drive plate 186 are installed on specific internal tracks along the direction perpendicular to the axial direction of the base 110 to ensure the stability and reliability of the first drive plate 182 and the second drive plate 186 during operation. At one end of the swing arm assembly 140, a tooth part 150 is correspondingly arranged. The tooth part 150 and the rotation connection part 142 are integrally designed and manufactured by a precision machining process to ensure that the tooth profile of the tooth part 150 is precisely matched with the tooth profile of the first drive plate 182 or the second drive plate 186. When the swing arm assembly 140 moves, the tooth part 150 meshes with the first drive plate 182 or the second drive plate 186, and the transverse displacement of all swing arms is forced to be synchronized through the transmission of the first drive plate 182 or the second drive plate 186. In order to avoid occupying extra space, the first drive plate 182, the second drive plate 186, the first tooth column 190, the second tooth column 192, the third tooth column 194 and the fourth tooth column 196 are cleverly hidden in the accommodation cavity 126 of the spacer part 124. The inner walls of the accommodation cavity 126, the first tooth column hole 128, the second tooth column hole 130, the third tooth column hole 132 and the fourth tooth column hole 134 are specially processed and are provided with grooves and tracks for accommodating the first tooth column 190, the second tooth column 192, the third tooth column 194 and the fourth tooth column 196, ensuring that the synchronous transmission assembly 180 is compactly installed and does not affect the normal rotation of the swing arm assembly 140.

[0101] In a second aspect, as Figure 13 and Figure 14As shown in the figure, an embodiment of the present application provides an electronic device 300, including: a first body 310 and a second body 320; and a hinge 100 provided in the embodiment of the first aspect. One of the connecting plates 152 of the swing arm assembly 140 in the first body 310 and the hinge 100 is fixedly connected, and the other connecting plate 152 of the swing arm assembly 140 in the second body 320 and the hinge 100 is fixedly connected.

[0102] In the embodiment of the present application, since the electronic device 300 includes the hinge 100 provided in the embodiment of the first aspect, the electronic device 300 has all the beneficial effects of the hinge 100 provided in the embodiment of the first aspect, which will not be elaborated one by one here.

[0103] Specifically, the electronic device 300 includes a first body 310 and a second body 320, and a base 110 disposed between the first body 310 and the second body 320. At least two swing arm assemblies 140 are provided on the base 110. Some of the swing arm assemblies 140 can be connected to the first body 310 by means of welding, bonding or screw fastening, etc., and the other part of the swing arm assemblies 140 can be connected to the second body 320 by means of welding, bonding or screw fastening, etc.

[0104] Among them, the swing arm assembly 140 is rotatably connected to the base 110. In addition, the electronic device 300 further includes a foldable screen 330, and the screen 330 is disposed on the surfaces of the first body 310 and the second body 320, and the screen 330 is a flexible screen 330.

[0105] Taking the number of the swing arm assemblies 140 as two as an example for illustration, the first swing arm assembly 140A and the second swing arm assembly 140B can rotate relative to each other, so as to realize the unfolding and folding of the electronic device 300. Moreover, the electronic device 300 can also hover at any position. During the process of the electronic device 300 unfolding from the folded state, the first swing arm assembly 140A and the second swing arm assembly 140B can rotate relative to the base 110. The first swing arm assembly 140A drives the first body 310 to rotate, and the second swing arm assembly 140B drives the second body 320 to rotate, so that the first body 310, the second body 320 and the screen 330 on the surface of the base 110 can be switched arbitrarily between unfolding and folding.

[0106] This application realizes the design of a dual elastic member through the first elastic member 168 and the second elastic member 170. The first elastic member 168 and the second elastic member 170 work together. The first elastic member 168 uses a spring with low stiffness and is responsible for the daily unfolding action, providing a soft and stable thrust to achieve the initial unfolding. The second elastic member 170 is a spring with high stiffness. Only when the electronic device 300 is fully unfolded, the second elastic member 170 is triggered to compress through the swing arm assembly 140, thereby providing an additional thrust to eliminate the arching phenomenon of the screen 330. Through this design, the problem that the elastic force of a single spring weakens after long-term use and affects the unfolding effect is solved, ensuring that the screen 330 is flatter in the unfolded state and improving the display performance.

[0107] Moreover, a receiving cavity 126 is provided on the spacer portion 124 of the base 110, and a synchronous transmission assembly 180 is arranged in the receiving cavity 126. Specifically, a first tooth column 190, a second tooth column 192, a third tooth column 194, a fourth tooth column 196, a first transmission plate 182, and a second transmission plate 186 are installed inside the receiving cavity 126. Through the meshing connection relationship of the tooth portion 150, the tooth columns, and the transmission plates, when the first swing arm assembly 140A rotates, the second swing arm assembly 140B can rotate synchronously. At the same time, the first transmission plate 182 and the second transmission plate 186 are integrated inside the base 110. The tooth portion 150 is provided on the rotation connection portion 142 of the swing arm assembly 140. The first transmission plate 182 and the second transmission plate 186 are installed on specific tracks. The tooth portion 150 and the rotation connection portion 142 are integrally designed, and the displacement of all the swing arm assemblies 140 is forced to be synchronous through the tooth columns and the transmission plates. This technical means solves the problem in the related art that the swing arm assemblies 140 are not synchronous due to manufacturing tolerances and wear, and further causes local wrinkles on the screen 330, ensuring the flatness and display effect of the screen 330.

[0108] The electronic device 300 can be a terminal or other devices other than the electronic device 300. Exemplarily, the electronic device 300 can be a mobile phone, a tablet computer, a laptop computer, a handheld computer, a music playing device, a private network communication terminal device (such as a walkie-talkie), a Mobile Internet Device (MID), an augmented reality / virtual reality / mixed reality device, a robot, a wearable device, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc. The embodiments of this application do not make specific limitations.

[0109] In the description of this specification, the description referring to terms such as "one embodiment" or "specific embodiment" means that the specific features, structures, materials or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0110] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A hinge, characterized in that: include: A base, the base having a mounting groove, the mounting groove having a groove opening and a groove bottom, the groove opening and the groove bottom being arranged opposite to each other; A swing arm assembly, the swing arm assembly comprising a connecting plate, a rotating connecting portion and a first sliding abutment portion, the connecting plate and the first sliding abutment portion are both connected to the rotating connecting portion, the connecting plate and the first sliding abutment portion extend from the rotating connecting portion in opposite directions respectively, the rotating connecting portion and the first sliding abutment portion are arranged in the mounting groove, the swing arm assembly is rotatably connected to the base through the rotating connecting portion, and when the rotating connecting portion rotates, the first sliding abutment portion rotates in the mounting groove; An elastic component is arranged in the installation groove, and the elastic component includes a second sliding abutment portion, a movable push plate, a first elastic member, a second elastic member and a first abutment block, the second sliding abutment portion is arranged on the side of the movable push plate away from the groove bottom, one end of the first elastic member abuts against the movable push plate, and the other end abuts against the groove bottom, one end of the second elastic member abuts against the groove bottom, and the other end abuts against the first abutment block, and the first abutment block is used to abut against the first sliding abutment portion; Wherein, the first sliding abutment portion and the second sliding abutment portion abut against each other; when the swing arm assembly rotates relative to the base, the first sliding abutment portion slides relative to the second sliding abutment portion, so that the movable push plate moves in the mounting groove in a direction close to or away from the bottom of the groove.

2. The hinge according to claim 1, characterized in that: The side wall of the mounting groove has a guide protrusion, and the guide protrusion is located between the groove bottom and the groove mouth. The rotating connection part includes a guide slide groove, and the guide protrusion and the guide slide groove are slidably engaged. The guide protrusion and the guide slide groove are both arc-shaped structures. When the guide protrusion and the guide slide groove slide relative to each other, the swing arm assembly and the base rotate relative to each other.

3. The hinge according to claim 1, characterized in that: The movable push plate and the second sliding abutment portion are provided with an avoidance groove, the avoidance groove penetrates the movable push plate and the second sliding abutment portion from the groove bottom to the notch, and the first abutment block can slide close to or away from the notch in the avoidance groove; Wherein, the first sliding abutment portion includes a second abutment block, and the second abutment block is protrudingly arranged, and the second abutment block and the first abutment block are arranged opposite to each other; When the second abutting block passes through the avoidance groove, it abuts against the first abutting block.

4. The hinge according to claim 3, characterized in that: The side of the first abutment block facing the swing arm assembly is a plane, the side of the second abutment block facing away from the rotating connection portion is a plane, and the abutment between the second abutment block and the first abutment block is a match between planes; The first sliding abutment portion has a curved surface on a side facing away from the rotating connection portion, and the second sliding abutment portion has a curved surface on a side facing the swing arm assembly. During the rotation of the swing arm assembly, the abutment between the first sliding abutment portion and the second sliding abutment portion is a match between curved surfaces.

5. The hinge according to claim 1, characterized in that: The movable push plate has a plurality of guide columns on one side facing the groove bottom, the guide columns extend toward the groove bottom, the groove bottom has a guide hole, one end of the guide column is inserted into the guide hole, the number of the first elastic members is multiple, and the first elastic member is sleeved on the guide column.

6. The hinge according to claim 1, characterized in that: The side wall of the installation groove has a limit block, which is located between the groove bottom and the groove opening. The movable push plate has a lug, which is located between the limit block and the groove bottom. The limit block limits the movement range of the movable push plate in the installation groove by abutting against the lug.

7. The hinge according to any one of claims 1 to 6, characterized in that: Along the first direction, the base is provided with two mounting grooves, namely a first mounting groove and a second mounting groove, and the notch of the first mounting groove and the notch of the second mounting groove are respectively located on two opposite sides of the base; the number of the swing arm assemblies is two, namely a first swing arm assembly and a second swing arm assembly; the number of the elastic assemblies is two, namely a first elastic assembly and a second elastic assembly; the first swing arm assembly and the first elastic assembly are arranged in the first mounting groove, and the second swing arm assembly and the second elastic assembly are arranged in the second mounting groove; The base includes a partition portion located between the first mounting groove and the second mounting groove, and the partition portion has a receiving cavity; Wherein, the hinge also includes a synchronous transmission assembly, the accommodating cavity is used to accommodate the synchronous transmission assembly, the synchronous transmission assembly is transmission-connected with the first swing arm assembly and the second swing arm assembly, and the synchronous transmission assembly is used to make the first swing arm assembly and the second swing arm assembly rotate synchronously.

8. The hinge according to claim 7, characterized in that: The surface of the rotating connection part is provided with teeth, and the teeth are distributed in an arc shape. The synchronous transmission assembly includes: A first transmission plate is disposed in the accommodating cavity, the first transmission plate can move along a second direction or a third direction, the second direction and the third direction are two opposite directions, and the first transmission plate has a first transmission tooth; a second transmission plate, disposed in the accommodating cavity, the second transmission plate being movable along the second direction or the third direction, the second transmission plate being provided with a second transmission tooth, the first transmission tooth and the second transmission tooth being arranged opposite to each other along a fourth direction, the fourth direction being a direction perpendicular to the second direction and the third direction; A first tooth column is located on a side of the first transmission plate facing the second transmission plate, one end of the first tooth column is meshed with the first transmission tooth, and the other end of the first tooth column is meshed with the tooth portion of the first swing arm assembly; A second gear column is located between the first transmission plate and the second transmission plate, and the second gear column is meshed with the first transmission tooth and the second transmission tooth; A third tooth column is located on a side of the second transmission plate facing the first transmission plate, and the third tooth column is meshed with the second transmission tooth; a fourth tooth column, one end of which is meshed with the third tooth column, and the other end of which is meshed with the tooth portion of the second swing arm assembly, The first gear column, the second gear column, the third gear column and the fourth gear column are distributed along the second direction; the first transmission plate and the second transmission plate slide in opposite directions under the transmission of the first gear column, the second gear column and the third gear column.

9. The hinge according to claim 8, characterized in that The spacer has a first tooth column hole on one side facing the first mounting groove, the first tooth column hole connecting the accommodating cavity and the first mounting groove, and the first tooth column is inserted into the first mounting groove through the first tooth column hole; The spacing portion has a second tooth column hole and a third tooth column hole, the second tooth column hole is connected to the accommodating cavity, the third tooth column hole is connected to the accommodating cavity, the second tooth column is inserted into the second tooth column hole, and the third tooth column is inserted into the third tooth column hole; The spacer has a fourth tooth post hole on one side facing the second mounting groove, the fourth tooth post hole connects the accommodating cavity and the second mounting groove, and the fourth tooth post is inserted into the second mounting groove through the fourth tooth post hole.

10. The hinge according to claim 9, characterized in that A first connecting ring is provided on the spacer portion, a first limiting portion is provided on the first connecting ring, a second limiting portion is provided at the end of the second tooth column, a rotating shaft is inserted at the end of the second tooth column, and the first limiting portion and the second limiting portion are adapted to each other, thereby limiting the rotation angle of the second tooth column.

11. The hinge according to claim 8, characterized in that The synchronous transmission assembly also includes: a third elastic member, disposed in the accommodating cavity, one end of the third elastic member abutting against the cavity wall of the accommodating cavity, and the other end of the third elastic member abutting against the first transmission plate, and the third elastic member and the first transmission plate are distributed along the second direction; a fourth elastic member, disposed in the accommodating cavity, wherein one end of the fourth elastic member abuts against the cavity wall of the accommodating cavity, and the other end abuts against the second transmission plate, and the fourth elastic member and the second transmission plate are distributed along the third direction; Wherein, the third elastic member and the fourth elastic member are in a compressed state during the rotation of the swing arm assembly.

12. An electronic device, characterized in that: include: a first subject and a second subject; as well as According to any one of claims 1 to 11, the first body is fixedly connected to a connecting plate of one swing arm assembly in the hinge, and the second body is fixedly connected to a connecting plate of another swing arm assembly in the hinge.

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