Electric folding hinge and folding mechanism

Abstract

The utility model relates to the technical field of hinges, and discloses an electric folding hinge and a folding mechanism, the hinge comprises a shell, a cavity is arranged in the shell, a power assembly is arranged in the cavity, folding assemblies are respectively arranged at the front end and the rear end of the shell, the power assembly is in transmission connection with the folding assemblies, and the folding assemblies are arranged on the shell. The folding assembly comprises folding units which are oppositely arranged, the folding units are arranged on the left side and the right side of the shell correspondingly, and the power assembly drives the folding units on the two sides to synchronously overturn inwards till being completely folded, or overturn outwards till being completely flattened, or overturn inwards or outwards till being in a hovering state. According to the scheme, the folding units on the two sides of the shell are driven by the power assembly to turn over, then the folding units can be automatically turned over without external force, the use scene of the electronic equipment product is expanded, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of hinges, and specifically discloses an electric folding hinge and a folding mechanism. Background Art

[0002] The development of electronic device products is rapid. More and more electronic products reduce their volume or protect the screen by folding, such as electronic products like mobile phones, tablet computers, laptop computers, action cameras, etc. These electronic products usually need to be folded through hinges. Foldable electronic devices usually have multiple usage states, such as a folded state, a flattened state, and a hovering state between the folded state and the flattened state. In order to enable the device to maintain different folded states relatively stably, a certain rotational resistance and locking force are usually artificially increased inside the hinge. This method has a poor sense of use. In response to this situation, there have emerged electronic devices that drive the hinge to fold electrically.

[0003] Chinese Patent CN202411235658.0 discloses an electric hinge driving device, a hinge device and an electronic device, including: a lead screw nut assembly, a first flipping driving assembly, a second flipping driving assembly, a spring assembly and a motor assembly; the lead screw nut assembly includes two lead screws arranged oppositely and a nut sleeved on both lead screws at the same time; the second flipping driving assembly and the first flipping driving assembly are respectively located on opposite sides or the same side of the nut; the second flipping driving assembly and the first flipping driving assembly are axially clamped along both ends of the lead screw; the first flipping driving assembly includes a first slider sleeved on both lead screws at the same time and two first rotating arms arranged oppositely and respectively sleeved on both lead screws; the second flipping driving assembly includes a second slider sleeved on both lead screws at the same time and two second rotating arms arranged oppositely and respectively sleeved on both lead screws. The electric hinge disclosed in this solution has a complex structure and a high production cost.

[0004] The utility model overcomes the shortcomings of the prior art and provides an electric folding hinge and a folding mechanism, which can realize electric drive folding and flattening, and has the advantage of simple structure. Summary of the Utility Model

[0005] The main purpose of the utility model is an electric folding hinge, which includes a housing. A cavity is arranged inside the housing, and a power assembly is arranged inside the cavity. Folding assemblies are respectively arranged at the front and rear ends of the housing. The power assembly is in transmission connection with the folding assemblies. The folding assemblies include folding units arranged oppositely. The folding units are respectively arranged on the left and right sides of the housing. The power assembly drives the folding units on both sides to synchronously flip inwards for folding or flip outwards for flattening.

[0006] Optionally, the folding unit includes a torsion arm, a fixing plate, a rotating arm, a first chute, and a second chute; one end of the torsion arm is in transmission connection with the power assembly, and the other end is slidably connected to the fixing plate. One end of the rotating arm is slidably connected to the first chute, and the other end is slidably connected to the second chute of the fixing plate. The first chute is fixedly connected to the housing;

[0007] The power assembly drives the torsion arm to rotate, the torsion arm drives the fixing plate to rotate, and the fixing plate drives the rotating arm to rotate.

[0008] Optionally, the power assembly includes a motor, a synchronous gear, and a synchronous shaft;

[0009] The motor is fixedly connected to the inner side of the housing. The synchronous gears are respectively arranged in the folding assemblies on both sides of the housing. The torsion arms are respectively arranged on both sides of the synchronous gears. The torsion arms are provided with teeth that mesh with the synchronous gears. The output shaft of the motor is connected to the synchronous gear on one side, and the synchronous shaft is connected to the torsion arms in the folding assemblies on both sides.

[0010] Optionally, it includes a flexible circuit board. The flexible circuit board is connected to the motor inside the housing. The flexible circuit board extends from inside the housing to outside the housing, and the flexible circuit board is provided with an interface.

[0011] Optionally, the torsion arm extends from inside the housing to outside the housing to form a bent portion. The bent portion passes through the guiding groove of the fixing plate. The rotation of the torsion arm drives the fixing plate to rotate, and the bent portion slides along the guiding groove.

[0012] Optionally, the bent portion is provided with a linear boss, and the guiding groove is provided with a linear notch for accommodating the linear boss.

[0013] Optionally, both ends of the rotating arm are respectively provided with a first arc-shaped sliding surface and a second arc-shaped sliding surface. The first arc-shaped sliding surface matches the arc surface of the first chute, and the second arc-shaped sliding surface matches the arc surface of the second chute. The second chute is formed by concave inward on the upper side of the fixing plate. Limit protrusions are arranged on both sides of the first chute and the second chute. Grooves are correspondingly arranged on both sides of the first arc-shaped sliding surface and the second arc-shaped chute. The limit protrusions match the grooves. The limit protrusions are used to prevent the first arc-shaped sliding surface from disengaging from the first chute and / or prevent the second arc-shaped sliding surface from disengaging from the second chute.

[0014] Optionally, a notch is provided in the middle of the arc-shaped sliding surface. The rotating arms in the relatively arranged folding units are arranged in a staggered manner through the notches.

[0015] Optionally, it includes a connecting plate which connects the rotating arms of the same-side folding units at the front and rear ends of the housing. The surface of the rotating arm is concave for accommodating the connecting plate, and the depth of the concavity matches the thickness of the connecting plate. The connecting plate is fixedly connected to the rotating arm, and the front surface of the connecting plate and the front surface of the rotating arm are in the same plane.

[0016] The present utility model also provides a folding mechanism, which includes the above-mentioned electric folding hinge and also includes a carrier, and the carrier is connected to the fixed plate of the electric folding hinge.

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] The electric folding hinge provided by the present utility model drives the folding units on both sides of the housing to flip through the power assembly, thereby realizing the automatic flipping of the folding units without external force, expanding the usage scenarios of electronic device products, and having a simple structure and low production cost. Description of the Drawings

[0019] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a proportional limitation.

[0020] Figure 1 It is a schematic diagram of an embodiment of the electric folding hinge of the present utility model;

[0021] Figure 2 It is a top view of the embodiment of the electric folding hinge of the present utility model with the upper cover hidden;

[0022] Figure 3 It is a rear view of the embodiment of the electric folding hinge of the present utility model;

[0023] Figure 4 It is a sectional view of the embodiment of the electric folding hinge of the present utility model;

[0024] Figure 5 It is a folding schematic diagram of the embodiment of the electric folding hinge of the present utility model;

[0025] Figure 6 It is an exploded view of the embodiment of the electric folding hinge of the present utility model;

[0026] Figure 7 It is a schematic diagram of the torsion arm and the fixed plate of the embodiment of the electric folding hinge of the present utility model Figure 1 ;

[0027] Figure 8 It is a schematic diagram of the torsion arm and the fixed plate of the embodiment of the electric folding hinge of the present utility model Figure 2 ;

[0028] Figure 9 Schematic diagram of the rotating arm and the first chute in the embodiment of the electric folding hinge of the present utility model.

[0029] Reference numerals:

[0030] 100 - housing; 200 - power assembly; 210 - motor; 220 - synchronous shaft; 230 - synchronous gear; 300 - folding assembly; 310 - folding unit; 311 - torsion arm; 3111 - teeth; 3112 - bent portion; 3113 - linear boss; 312 - fixing plate; 3121 - guiding groove; 3122 - linear notch; 3123 - connecting hole; 3124 - second chute; 313 - rotating arm; 3131 - first arc-shaped sliding surface; 3132 - groove; 3133 - notch; 3134 - second arc-shaped sliding surface; 314 - first chute; 3141 - limiting protrusion; 320 - connecting plate; 330 - flexible circuit board; 331 - interface. Detailed implementation manners

[0031] For the convenience of understanding the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are only for the purpose of illustration. In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the quantity of the indicated technical features. Thus, unless otherwise specified, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features; the meaning of "plurality" is two or more. The term "comprising" and any deformation thereof mean non-exclusive inclusion, and there may be one or more other features, integers, steps, operations, units, components and / or combinations thereof existing or added.

[0032] In addition, unless otherwise clearly stipulated and defined, the terms "installed", "connected", and "joined" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, or the internal communication of two components. All technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not applicable to limiting the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0033] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] As Figure 1-9 shown, it is a schematic diagram of an embodiment of an electric folding hinge provided by the present utility model.

[0035] Please refer to Figure 1-9 , this embodiment includes a housing 100. A cavity is provided inside the housing 100, and a power assembly 200 is provided in the cavity. Folding assemblies 300 are respectively provided at the front and rear ends of the housing 100. The power assembly 200 is in transmission connection with the folding assemblies 300. The folding assemblies 300 include relatively arranged folding units 310. The folding units 310 are respectively arranged on the left and right sides of the housing 100. The power assembly 200 drives the folding units 310 on both sides to synchronously turn inward to be completely folded, or turn outward to be completely flattened, or turn inward or outward to a hovering state.

[0036] Specifically, the motor 210 in the power assembly 200 drives one side of the folding assembly 300 to turn. The folding assemblies 300 on both sides are connected by a synchronizing shaft 220, so as to realize the synchronous turning of the folding assemblies 300 on both sides. The motor 210 can specifically be a motor, and by controlling the motor, the folding assembly 300 can hover at any angle.

[0037] In one embodiment, the folding unit 310 includes a torsion arm 311, a fixing plate 312, a rotating arm 313, a first chute 314, and a second chute 3124. One end of the torsion arm 311 is in transmission connection with the power assembly 200, and the other end is slidably connected to the fixing plate 312. One end of the rotating arm 313 is slidably connected to the first chute 314, and the other end is slidably connected to the second chute 3124 of the fixing plate 312. The first chute 314 is fixedly connected to the housing 100.

[0038] The power assembly 200 drives the torsion arm 311 to rotate, the torsion arm 311 drives the fixed plate 312 to rotate, and the fixed plate 312 drives the rotating arm 313 to slide and rotate along the first chute 314 and the second chute 3124. The fixed plate 312 is used for the connection and transmission between the torsion arm 311 and the rotating arm 313.

[0039] In one embodiment, the power assembly 200 includes a motor 210, a synchronizing shaft 220, and synchronizing gears 230. The motor 210 is located inside the cavity of the housing 100 and is fixedly connected to the housing 100. The synchronizing gears 230 are respectively arranged in the folding assemblies 300 on both sides of the housing 100. Torsion arms 311 are respectively arranged on both sides of the synchronizing gears 230. Tooth teeth 3111 are arranged on the torsion arms 311 and are engaged with the synchronizing gears 230. The output shaft of the motor 210 is connected to the synchronizing gear 230 on one side, and the synchronizing shaft 220 is connected to the torsion arms 311 in the folding assemblies 300 on both sides.

[0040] The synchronizing gears 230 in the folding assembly 300 are composed of two gears. The two gears are engaged with each other and are respectively engaged with the torsion arms 311 in the folding unit 310. The synchronizing shaft 220 is arranged parallel to the motor 210. The two ends of the synchronizing shaft 220 are respectively fixedly connected to the end faces of the torsion arms 311 in the folding assemblies 300 on both sides. The synchronizing shaft 220 rotates synchronously with the torsion arm 311, or the torsion arm 311 rotates synchronously with the synchronizing shaft 220.

[0041] In one embodiment, a flexible circuit board 330 is further included. The flexible circuit board 330 is connected to the motor 210 inside the housing 100. The flexible circuit board 330 extends from inside the housing 100 to the outside of the housing 100. An interface 331 is arranged on the flexible circuit board. The interface 331 is used for electrically connecting other components.

[0042] In one embodiment, the torsion arm 311 extends from inside the housing 100 to the outside of the housing 100 to form a bent portion 3112. The bent portion 3112 passes through the guiding groove 3121 of the fixed plate 312. The rotation of the torsion arm 311 drives the fixed plate 312 to rotate, and the bent portion 3112 slides along the guiding groove 3121. The rotation direction and rotation interval of the fixed plate 312 are limited by the bent portion 3112 and the guiding groove 3121.

[0043] Furthermore, a straight boss 3113 is arranged on the bent portion 3112, and a straight notch 3122 for accommodating the straight boss 3113 is arranged in the guiding groove 3121. The left and right shaking of the bent portion 3112 during sliding in the guiding groove 3121 is limited by the straight boss 3113 and the straight notch 3122.

[0044] In one embodiment, first arcuate sliding surfaces 3131 and second arcuate sliding surfaces 3134 are respectively provided at both ends of the rotating arm 313. The first arcuate sliding surface 3131 matches the arc surface of the first sliding groove 314, and the second arcuate sliding surface 3134 matches the arc surface of the second sliding groove 3124. The second sliding groove 3124 is formed by being concave inward on the upper side of the fixing plate 312. Limiting protrusions 3141 are provided on both sides of the first sliding groove 314 and the second sliding groove 3124, and grooves 3132 are correspondingly provided on both sides of the first arcuate sliding surface 3131 and the second arcuate sliding surface 3134. The limiting protrusions 3141 match the grooves 3132. The limiting protrusions 3141 are used to prevent the first arcuate sliding surface 3131 from disengaging from the first sliding groove 314 and to prevent the second arcuate sliding surface 3134 from disengaging from the second sliding groove 3124.

[0045] Further, a notch 3133 is provided in the middle of the first arcuate sliding surface 3131. The rotating arms 313 in the relatively arranged folding units 310 are arranged in an interlaced manner through the notch 3133, which can reduce the overall width of the hinge.

[0046] In addition, the fixing plate 312 is provided with a connection hole 3123, and the connection hole 3123 is used for installing connecting parts such as screws.

[0047] The above designs of the fixing plate 312 and the rotating arm 313 can make the structure more compact, reduce the thickness of the housing 100, and further reduce the overall thickness of the hinge.

[0048] In one embodiment, it further includes a connecting plate 320. The connecting plate 320 connects the rotating arms 313 of the same-side folding units 310 in the folding assemblies 300 at the front and rear ends of the housing 100. The surface of the rotating arm 313 is concave for accommodating the connecting plate 320. The concave depth matches the thickness of the connecting plate 320, and the connecting plate 320 is fixedly connected to the rotating arm 313. The front surface of the connecting plate 320 and the front surface of the rotating arm 313 are in the same plane. The front surface specifically refers to the inner side surface where the inner flipping occurs. The connecting plate 320 can further strengthen the synchronous movement between the front and rear folding units 310 and at the same time provide a planar connection surface.

[0049] The present invention also provides a folding mechanism, which includes the above-mentioned embodiment of the electric folding hinge, and further includes a carrier, and the carrier is connected to the fixing plate of the electric folding hinge.

[0050] In summary, in the embodiment of the electric folding hinge provided by the present invention, the folding units on both sides of the housing are driven by the power assembly to flip, so as to realize the automatic flipping of the folding units without external force, expand the usage scenarios of electronic device products, and compared with existing products, the structure is simpler and the production cost is lower.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electric folding hinge, characterized in that, It includes a housing. There is a cavity inside the housing. A power assembly is provided in the cavity. Folding assemblies are respectively provided at the front and rear ends of the housing. The power assembly is in transmission connection with the folding assemblies. The folding assemblies include folding units arranged oppositely. The folding units are respectively arranged on the left and right sides of the housing. The power assembly drives the folding units on both sides to synchronously turn inwards to be completely folded, or turn outwards to be completely flattened, or turn inwards or outwards to a hovering state.

2. The electric folding hinge according to claim 1, wherein, The folding unit includes a torsion arm, a fixing plate, a rotating arm, a first chute and a second chute; one end of the torsion arm is in transmission connection with the power assembly, and the other end is slidably connected to the fixing plate. One end of the rotating arm is slidably connected to the first chute, and the other end is slidably connected to the second chute of the fixing plate. The first chute is fixedly connected to the housing; The power assembly drives the torsion arm to rotate. The torsion arm drives the fixing plate to rotate. The fixing plate drives the rotating arm to rotate.

3. The electric folding hinge according to claim 2, wherein, The power assembly includes a motor, a synchronous gear and a synchronous shaft; The motor is fixedly connected to the inner side of the housing. The synchronous gears are respectively arranged in the folding assemblies on both sides of the housing. The torsion arms are respectively arranged on both sides of the synchronous gear. The torsion arm is provided with teeth meshing with the synchronous gear. The output shaft of the motor is connected to the synchronous gear on one side. The synchronous shaft is connected to the torsion arms in the folding assemblies on both sides.

4. The electric folding hinge according to claim 3, wherein, It includes a flexible circuit board. The flexible circuit board is connected to the motor inside the housing. The flexible circuit board extends from inside the housing to outside the housing. The flexible circuit board is provided with an interface.

5. The electric folding hinge according to claim 2, wherein The torsion arm extends from inside the housing to outside the housing to form a bent portion. The bent portion passes through the guiding groove of the fixing plate. The rotation of the torsion arm drives the fixing plate to rotate. The bent portion slides along the guiding groove.

6. The electric folding hinge according to claim 5, wherein The bent portion is provided with a linear boss. The guiding groove is provided with a linear notch for accommodating the linear boss.

7. The electric folding hinge according to claim 2, characterized in that, Both ends of the rotating arm are respectively provided with a first arc-shaped sliding surface and a second arc-shaped sliding surface. The first arc-shaped sliding surface matches the arc surface of the first chute. The second arc-shaped sliding surface matches the arc surface of the second chute. The second chute is formed by being concave inward on the upper side of the fixing plate. Limit protrusions are provided on both sides of the first chute and the second chute. Grooves are correspondingly provided on both sides of the first arc-shaped sliding surface and the second arc-shaped chute. The limit protrusions match the grooves. The limit protrusions are used to prevent the first arc-shaped sliding surface from disengaging from the first chute and / or prevent the second arc-shaped sliding surface from disengaging from the second chute.

8. The electric folding hinge according to claim 7, characterized in that, A notch is provided in the middle of the first arc-shaped sliding surface. The rotating arms in the oppositely arranged folding units are arranged in an interlaced manner through the notch.

9. The electric folding hinge according to claim 2, wherein, It includes a connecting plate. The connecting plate connects the rotating arms of the same-side folding units in the folding assemblies at the front and rear ends of the housing. The surface of the rotating arm is concave for accommodating the connecting plate. The concave depth matches the thickness of the connecting plate. The connecting plate is fixedly connected to the rotating arm. The front surface of the connecting plate and the front surface of the rotating arm are in the same plane.

10. A folding mechanism, characterized in that, It includes an electric folding hinge as described in any one of claims 1-9, and further includes a carrier, and the carrier is connected to the fixed plate of the electric folding hinge.

Images