Rotating adjustment mechanism and protective case

Abstract

The present invention relates to the technical field of mobile terminal accessories, and discloses a rotation adjustment mechanism and a protective shell, wherein the rotation adjustment mechanism comprises: a cover plate, a base plate, a first arm and a second arm; the base plate is provided with at least one curved groove; the middle part of the first arm is rotationally connected to the middle part of the second arm and can slide along the length direction of the first arm, one end of each of the first arm and the second arm is respectively spaced and fixedly connected to the cover plate by a fixed hinge, and the other end of each of the first arm and the second arm is respectively movably connected to the base plate by a movable hinge; when the cover plate rotates relative to the base plate, at least one movable hinge in the first arm and the second arm can be driven to slide along the curved groove toward or away from the other movable hinge, so that the cover plate and the base plate can switch between the support position and the cover position. In the above manner, multiple support angles are achieved, and it is convenient to use and store.

Description

Technical Field

[0001] The invention relates to the technical field of mobile terminal accessories, and in particular to a rotation adjustment mechanism and a protective shell. Background Art

[0002] With the continuous advancement of electronic science and technology, various smart electronic products have gradually become an indispensable part of people's daily life, and mobile terminals such as mobile phones are one of them. In order to prevent mobile terminals such as mobile phones from slipping and breaking during use, some manufacturers have launched protective case products.

[0003] At present, most protective cases do not have a supporting structure. For some protective cases that can achieve the supporting function, a support frame that can be flipped relative to the shell is usually set on the back of the protective case. For example, a common protective case with a support plate is a support plate connected to the back of the protective case by a hinge. When it needs to be used as a bracket, the user needs to use fingernails or tools to flip the support plate back, which is not convenient for some users. Moreover, this support structure can usually only achieve a fixed support angle, which is difficult to meet user needs. Summary of the invention

[0004] In view of the above problems, an embodiment of the present invention provides a rotation adjustment mechanism and a protective shell, which have multiple support angles and are easy to use and store.

[0005] According to one aspect of an embodiment of the present invention, a rotation adjustment mechanism is provided, comprising: a cover plate, a base plate, a first arm and a second arm; the base plate is provided with at least one curved groove; the middle portion of the first arm is rotatably connected to the middle portion of the second arm and can slide along the length direction of the first arm, one end of each of the first arm and the second arm is respectively spaced and fixedly connected to one side of the cover plate by a fixed hinge, and the other end of each is respectively movably connected to one side of the base plate by a movable hinge, and at least one of the movable hinges of the first arm and the second arm can be movably placed in the curved groove; when the cover plate rotates relative to the base plate, at least one of the movable hinges can be driven to slide along the curved groove in a direction close to or away from the other movable hinge, so that the cover plate and the base plate can switch between a supporting position and a covering position.

[0006] In an optional manner, a movable opening is provided in the middle section of the first arm, the second arm passes through the movable opening, and can slide in the movable opening along the length direction of the first arm, and the length of the movable opening is greater than the length of the second arm; when in the supporting position, the first arm and the second arm intersect with each other, and when in the covering position, the first arm and the second arm are accommodated in the space covered by the cover plate and the bottom plate, and the second arm is accommodated in the movable opening.

[0007] In an optional manner, a sliding groove is provided on the side wall of the movable opening, and the sliding groove extends along the length direction of the movable opening; a constraint shaft is provided at the middle position of the second arm, and the constraint shaft is at least partially located in the sliding groove, and can drive the second arm to slide along the sliding groove relative to the first arm.

[0008] In an optional manner, the curved groove includes a first arc groove and a second arc groove, the first arc groove and the second arc groove are both bent toward the center of the base plate, the first arc groove has a first proximal end and a first distal end, the second arc groove has a second proximal end and a second distal end, and the intersection of a line connecting the first proximal end and the second proximal end and a line connecting the first distal end and the second distal end coincides with the center of the base plate; the movable hinge includes a first movable hinge and a second movable hinge, one end of the first movable hinge is connected to the first arm, and the other end can be movably placed in the first arc groove, and one end of the second movable hinge is connected to the second arm, and the other end can be movably placed in the second arc groove.

[0009] In an optional manner, the first arc-shaped groove and the second arc-shaped groove are arranged in a centrally symmetrical manner with respect to the center of the bottom plate.

[0010] In an optional embodiment, the fixed hinge includes a first fixed hinge and a second fixed hinge arranged at intervals on the cover plate, one end of the first fixed hinge is fixedly connected to the cover plate, and the other end is rotatably connected to the first arm, one end of the second fixed hinge is fixedly connected to the cover plate, and the other end is rotatably connected to the second arm, and the axis of rotation of the first arm relative to the cover plate is parallel to the axis of rotation of the second arm relative to the cover plate.

[0011] In an optional manner, a plurality of magnetic members are further provided at the bottom of the curved groove, and the plurality of magnetic members are arranged at intervals along the direction in which the curved groove extends, and the magnetic members are used to be magnetically connected to one end of the movable hinge located in the curved groove.

[0012] In an optional manner, a stop portion is provided inside the curved groove at a position away from one end of the center of the bottom plate; when the movable hinge abuts against the stop portion, the cover plate and the bottom plate are in a covering position.

[0013] In an optional manner, the base plate further includes an upper plate and a lower plate, the upper plate is detachably mounted on the lower plate, the curved groove is penetrated through the upper plate, and the magnetic attraction part and the stopper are both arranged on a side of the lower plate facing the curved groove.

[0014] According to another aspect of an embodiment of the present invention, a protective case is provided, comprising: the above-mentioned rotation adjustment mechanism of the protective case body, wherein the rotation adjustment mechanism is installed on the back of the protective case body.

[0015] The rotation adjustment mechanism of the embodiment of the present application is achieved by fixing one end of the first arm and the second arm to the cover plate through a fixed hinge, and the other end of each arm is movably connected to the bottom plate through a movable hinge, and the middle part of the first arm and the middle part of the second arm are rotatably connected, so that the bottom plate, the first arm, the second arm and the cover plate form two diagonal triangles through the connection with each other. When the cover body rotates relative to the bottom plate, at least one movable hinge in the first arm and the second arm is driven to slide in the curved groove of the bottom plate in a direction close to or away from the other movable hinge to change the angle and side length of the triangle, thereby changing the center distance and placement angle between the cover plate and the bottom plate. Compared with the traditional support mechanism set on the back of the protective shell, this method can achieve multiple support angles, and is simple to adjust, and easy to use and store.

[0016] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A schematic diagram showing the structure of the rotation adjustment mechanism provided by an embodiment of the present invention when it is in a supporting position;

[0019] Figure 2 A schematic diagram of the structure of the rotary adjustment mechanism (after removing the cover plate) provided in an embodiment of the present invention when in a closed position is shown;

[0020] Figure 3 An exploded view of a rotation adjustment mechanism provided by an embodiment of the present invention is shown;

[0021] Figure 4 An exploded view of a rotation adjustment mechanism provided by an embodiment of the present invention from another perspective is shown;

[0022] Figure 5 A schematic diagram showing the structure of a rotary adjustment mechanism in a protective shell provided by an embodiment of the present invention when the rotary adjustment mechanism is in a closed position;

[0023] Figure 6 A schematic structural diagram is shown when the rotation adjustment mechanism in the protective shell provided by an embodiment of the present invention is in a supporting position.

[0024] The reference numerals in the specific implementation manner are as follows:

[0025] Cover plate 10;

[0026] Bottom plate 20; first arc groove 21; second arc groove 22; first magnetic member 211; first stopper 212; second magnetic member 221; second stopper 222; upper plate 23; lower plate 24;

[0027] first arm 30; movable opening 31; slide slot 32; first movable portion 33; first fixed portion 34;

[0028] The second arm 40; the constraint shaft 41; the plug hole 42; the second movable portion 43; the second fixed portion 44;

[0029] A first movable hinge 50; a first movable member 51; a first rotating shaft 52;

[0030] A second movable hinge 60; a second movable member 61; a second rotating shaft 62;

[0031] A first fixed hinge 70; a first fixed member 71; a third rotating shaft 72;

[0032] A second fixed hinge 80 ; a second fixed member 81 ; and a fourth rotating shaft 82 .

[0033] Rotation adjustment mechanism 100; protective shell 200; protective shell body 210. DETAILED DESCRIPTION

[0034] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0035] See also Figure 1 and Figure 2 , Figure 1 FIG. 1 shows a schematic structural diagram of the rotation adjustment mechanism 100 provided in an embodiment of the present invention when it is in a supporting position. Figure 2 It shows a structural schematic diagram of the rotation adjustment mechanism 100 (after removing the cover plate 10) provided in the embodiment of the present invention when it is in the closed position.

[0036] The rotation adjustment mechanism 100 includes: a cover plate 10, a base plate 20, a first arm 30 and a second arm 40, the base plate 20 is provided with at least one curved groove, the middle part of the first arm 30 and the middle part of the second arm 40 are rotatably connected and can slide along the length direction of the first arm 30, one end of each of the first arm 30 and the second arm 40 is fixedly connected to one side of the cover plate 10 through a fixed hinge, the other end of each of the first arm 30 and the second arm 40 is movably connected to one side of the base plate 20 through a movable hinge, and at least one movable hinge of the first arm 30 and the second arm 40 can be movably placed in the curved groove. When the cover plate 10 rotates relative to the base plate 20, at least one movable hinge of the first arm 30 and the second arm 40 can be driven to slide along the curved groove in a direction close to or away from the other movable hinge, so that the cover plate 10 and the base plate 20 can switch between the support position and the cover position.

[0037] Among them, one end of each of the first arm 30 and the second arm 40 is spaced apart and fixedly connected to one side of the cover plate 10 through a fixed hinge, that is, one end of the first arm 30 is connected to the cover plate 10 through a fixed hinge, and one end of the second arm 40 is connected to the cover plate 10 through another fixed hinge. The fixed hinge connected to the first arm 30 and the fixed hinge connected to the second arm 40 are spaced apart on the cover plate 10 and are fixedly connected to the cover plate 10 respectively, so that the first arm 30 and the second arm 40 can only rotate relative to the cover plate 10 through their respective fixed hinges, while the fixed hinge connected to the first arm 30 and the fixed hinge connected to the second arm 40 cannot move relative to the cover plate 10 on the plane of the cover plate 10.

[0038] The other ends of the first arm 30 and the second arm 40 are respectively movably connected to the base plate 20 through movable hinges, that is, the first arm 30 and the second arm 40 can rotate relative to the base plate 20 through their respective movable hinges, and the movable hinge connected to the first arm 30 and the movable hinge connected to the second arm 40 can slide or rotate relative to the base plate 20 on the plane of the base plate 20.

[0039] The middle of the first arm 30 refers to the middle section between the two ends along the length direction of the first arm 30, rather than the center position of the first arm 30. Similarly, the middle of the second arm 40 refers to the middle section between the two ends along the length direction of the second arm 40, rather than the center position of the second arm 40.

[0040] The rotation adjustment mechanism 100 of the embodiment of the present application is configured such that one end of each of the first arm 30 and the second arm 40 is fixedly connected to the cover plate 10 through a fixed hinge, and the other end of each is movably connected to the base plate 20 through a movable hinge, and the middle part of the first arm 30 and the middle part of the second arm 40 are rotatably connected, so that the base plate 20, the first arm 30, the second arm 40 and the cover plate 10 are connected to each other to form two diagonal triangles, wherein the distance from the connection point between the middle part of the second arm 40 and the middle part of the first arm 30 to the two ends of the second arm 40 is a fixed value, so that each triangle has at least one fixed side, and in addition The two end points of the first arm 30 and the second arm 40 connected to the cover plate 10 by the fixed hinges are also fixed values. Therefore, when the cover body 30 rotates relative to the base plate 20, at least one movable hinge of the first arm 30 and the second arm 40 is driven to slide in the curved groove of the base plate 20 in the direction close to or away from the other movable hinge to change the angle and side length of the triangle, thereby changing the center distance or placement angle between the cover plate 10 and the base plate 20. Compared with the traditional support mechanism arranged on the back of the protective shell, this method can achieve multiple support angles, and is simple to adjust, and easy to use and store.

[0041] In some specific embodiments, a movable opening 31 is provided in the middle of the first arm 30, and the middle of the second arm 40 is inserted into the movable opening 31 and can slide in the movable opening 31 along the length direction of the first arm 30, and in the length direction of the first arm 30, the length of the movable opening 31 is greater than the length of the second arm 40. When in the supporting position, the first arm 30 and the second arm 40 intersect; when in the covering position, the first arm 30 and the second arm 40 are accommodated in the space covered by the cover plate 10 and the bottom plate 20, and the second arm 40 is accommodated in the movable opening 31.

[0042] By setting a movable opening 31 for the second arm 40 to move in the middle of the first arm 30, the second arm 40 can be inserted into the movable opening 31 and arranged crosswise with the first arm 30. When the cover plate 10 rotates relative to the bottom plate 20 to the supporting position, the second arm 40 and the first arm 30 can always maintain a cross state, which plays a role in limiting the second arm 40. When the cover plate 10 rotates relative to the bottom plate 20 to the covering position, the first arm 30 is parallel to the second arm 40. At this time, the length direction of the first arm 30 is parallel to the length direction of the second arm 40, so that the second arm 40 is accommodated in the movable opening 31, so that the movable opening 31 can be used for limiting and accommodating the second arm 40, making the overall structure more compact.

[0043] It should be noted that, in some other embodiments, the first arm 30 may not be provided with the movable opening 31, that is, the middle part of the second arm 40 is movably connected to the side wall at the middle part of the first arm 30. At this time, the relative movement between the first arm 30 and the second arm 40 will not interfere with each other due to length reasons. The length of the first arm 30 may be greater than or equal to the length of the second arm 40, or may be less than the length of the second arm 40.

[0044] See also Figure 3 and Figure 4 , and combined with Figure 1 and Figure 2 , Figure 3 An exploded view of a rotation adjustment mechanism 100 provided by an embodiment of the present invention is shown. Figure 4 The exploded view of the rotation adjustment mechanism 100 provided by the embodiment of the present invention is shown in another perspective. Furthermore, the inner wall of the movable opening 31 is also provided with a slide groove 32, which extends along the length direction of the movable opening 31, and a constraint shaft 41 is provided at the middle position of the second arm 40, which is at least partially located in the slide groove 32 and can drive the second arm 40 to slide along the slide groove 32 relative to the first arm 30.

[0045] By setting the constraint shaft 41 on the second arm 40, the triangle formed by the first arm 30, the second arm 40 and the cover plate 10 has two fixed sides, that is, the three fulcrums where the constraint shaft 41, the first arm 30 and the second arm 40 are respectively connected to the cover plate 10 through the fixed hinge are the three end points of the triangle, wherein the side from the constraint shaft 41 to the fixed hinge of the second arm 40 is one fixed side, and the side from the fixed hinge of the first arm 30 to the fixed hinge of the second arm 40 is another fixed side. Therefore, when the cover plate 10 rotates relative to the bottom plate 20, the constraint shaft 41 slides in the slide groove 32 along the direction of the first arm 30 to change the side length from the constraint shaft 41 to the fixed hinge of the first arm 30. In this way, the constraint shaft 41 can limit the relative rotation or sliding between the first arm 30 and the second arm 40 without human action.

[0046] Furthermore, the second arm 40 is provided with an inserting hole 42 , and the constraint shaft 41 can be detachably inserted into the inserting hole 42 . The slide groove 32 can be a through groove to facilitate the assembly between the constraint shaft 41 , the second arm 40 and the first arm 30 .

[0047] It should be noted that, in other embodiments, the constraint shaft 41 and the second arm 40 may also be integrated.

[0048] In some specific embodiments, the curved groove includes a first arcuate groove 21 and a second arcuate groove 22, both of which are bent toward the center of the base plate 20, the first arcuate groove 21 has a first proximal end and a first distal end, the second arcuate groove 22 has a second proximal end and a second distal end, and the intersection of the first proximal end and the second proximal end and the first distal end and the second distal end coincides with the center of the base plate 20.

[0049] That is, the distance from the first arc groove 21 to the center of the bottom plate 20 gradually increases from the first proximal end to the first distal end; the distance from the second arc groove 22 to the center of the bottom plate 20 gradually increases from the second proximal end to the second distal end.

[0050] The movable hinge includes a first movable hinge 50 and a second movable hinge 60. One end of the first movable hinge 50 is connected to the first arm 30, and the other end of the first movable hinge 50 can be movably placed in the first arc groove 21. One end of the second movable hinge 60 is connected to the second arm 40 and can be movably placed in the second arc groove 22.

[0051] When the cover plate 10 rotates relative to the base plate 20, the cover plate 10 drives the first movable hinge 50 of the first arm 30 to slide along the first arc groove 21 from the first proximal end to the first distal end, and drives the second movable hinge 60 of the second arm 40 to slide along the second arc groove 22 from the second proximal end to the second distal end, so that the first movable hinge 50 and the second movable hinge 60 move away from each other. At this time, the center distance between the cover plate 10 and the base plate 20 gradually decreases until the cover plate 10 and the base plate 20 cover each other.

[0052] When the cover plate 10 rotates in the opposite direction relative to the base plate 20, the cover plate 10 drives the first movable hinge 50 of the first arm 30 to slide along the first arc groove 21 from the first distal end to the first proximal end, and drives the second movable hinge 60 of the second arm 40 to slide along the second distal end to the second proximal end of the second arc groove 22, so that the first movable hinge 50 and the second movable hinge 60 approach each other. At this time, the center distance between the cover plate 10 and the base plate 20 gradually increases.

[0053] It should be noted that the rotation direction of the first movable hinge 50 and the second movable hinge 60 of the first arm 30 and the second arm 40 driven by the cover 10 to move closer to or away from each other can also be divided into one of counterclockwise rotation and clockwise counter-rotation. For example, when the cover 10 rotates clockwise relative to the base plate 20, the first movable hinge 50 and the second movable hinge 60 move closer to each other. When the cover 10 rotates counterclockwise relative to the base plate 20, the first movable hinge 50 and the second movable hinge 60 move closer to each other. No specific limitation is made here.

[0054] In this embodiment, two first arc grooves 21 and second arc grooves 22 are bent relative to the center of the base plate 20, so that when the cover plate 10 rotates relative to the base plate 20, the first movable hinge 50 of the first arm 30 is driven to slide in the first arc groove 21, and the second movable hinge 60 of the second arm 40 is driven to slide in the second arc groove 22, so that the first movable hinge 50 and the second movable hinge 60 respectively move closer to or away from each other in a spiral manner around the center of the base plate 20. In this way, the sliding resistance of the first movable hinge 50 and the second movable hinge 60 in the first arc groove 21 and the second arc groove 22 is small, and the operation is convenient.

[0055] It should be noted that, in some other embodiments, the base plate 20 may also have a curved groove or only include a first arc groove 21. The first movable hinge 50 can be movably placed in the first arc groove 21, and the second movable hinge 60 is located outside the first arc groove 21 and is rotatably connected to the base plate 20. The axis of rotation of the second movable hinge 60 relative to the base plate 20 is perpendicular to the plane where the first arc groove 21 is located on the base plate 20, and there is a preset distance between the first movable hinge 50 and the first proximal end of the first arc groove 21. In this way, when the cover plate 10 rotates relative to the base plate 20, the cover body will drive the first movable hinge 50 of the first arm 30 to slide in the first arc groove 21, and the second movable hinge 60 will rotate relative to the base plate 20 at a preset fixed position point. At this time, it is equivalent to the first movable hinge 50 moving closer to or away from each other in the first arc groove 21 with the second movable hinge 60 as the spiral center.

[0056] Similarly, in other embodiments, the base plate 20 may also include a curved groove or only include a second arc groove 22. The second movable hinge 60 can be movably placed in the second arc groove 22. The first movable hinge 50 is located outside the second arc groove 22 and is rotatably connected to the base plate 20. The plane where the second arc groove 22 is located is perpendicular to the axis of rotation of the movable hinge relative to the base plate 20, and the second movable hinge 60 is spaced a preset distance from the second proximal end of the second arc groove 22.

[0057] Specifically, the first movable hinge 50 includes a first movable member 51 and a first rotating shaft 52. One end of the first arm 30 is provided with a first movable portion 33 for rotationally cooperating with the first movable member 51. One end of the first movable member 51 can be slidably placed in the first arc groove 21, and the other end is located outside the first arc groove 21 and rotationally cooperating with the first movable portion 33 through the first rotating shaft 52. The first movable member 51 and the first movable portion 33 are both provided with connection holes for the first rotating shaft 52 to be plugged in and cooperating with.

[0058] The second movable hinge 60 includes a second movable member 61 and a second rotating shaft 62. One end of the second arm 40 is provided with a second movable portion 43 for rotationally cooperating with the second movable member 61. The second movable member 61 can be movably placed in the second arc groove 22, and the other end is located outside the second arc groove 22 and is rotationally connected to the second movable portion 43 through the second rotating shaft 62. The second movable member 61 and the second movable portion 43 are both provided with connection holes for plugging and cooperating with the second rotating shaft 62.

[0059] In some embodiments, the first arc groove 21 and the second arc groove 22 are centrally symmetrically arranged with respect to the center of the bottom plate 20. This centrally symmetrical structure facilitates the processing of the first arc groove 21 and the second arc groove 22, and is also conducive to improving the smoothness of the first movable hinge 50 and the second movable hinge 60 sliding in the first arc groove 21 and the second arc groove 22, respectively.

[0060] In other embodiments, the curved groove is S-shaped or elliptical, and the movable hinges of the first arm 30 and the second arm 40 can be movably placed in the curved groove, and the center of the curved groove coincides with the center of the bottom plate 20. When the cover plate 10 rotates relative to the bottom plate 20, the movable hinges of the first arm 30 and the second arm 40 can be driven to move closer to or farther from the center of the curved groove, so that the cover plate 10 and the bottom plate 20 are switched between the support position and the cover position.

[0061] For ease of understanding, the following is a further description of the curved groove being S-shaped or elliptical in shape, in combination with the curved groove including the first curved groove 21 and the second curved groove 22, the movable hinges including the first movable hinge 50 and the second movable hinge 60, one end of the first movable hinge 50 is connected to the first arm 30, and the other end of the first movable hinge 50 can be movably placed in the first curved groove 21, one end of the second movable hinge 60 is connected to the second arm 40, and the other end of the second movable hinge 60 can be movably placed in the second curved groove 22:

[0062] In the case where the curved groove is S-shaped, it can be considered that one end of the first arc groove 21 is connected to one end of the second arc groove 22, for example: the first arc groove 21 and the second arc groove 22 are both semicircular arc structures, one end of each of the two semicircular arcs is connected to the center of the bottom plate 20, and they are centrally symmetrically arranged with respect to the center of the bottom plate 20. It can be understood that the arc length of the first arc groove 21 and the second arc groove 22 can also be a quarter of the arc length, which can be specifically set according to actual needs.

[0063] When the first movable hinge 50 and the second movable hinge 60 move from the two ends of the S shape to the center, the center distance between the cover plate 10 and the bottom plate 20 changes gradually from small to large, and the cover plate 10 switches from the closing position to the supporting position.

[0064] For the case where the curved groove is in an elliptical ring shape, it can be regarded as that the two ends of the first arc groove 21 and the two ends of the second arc groove 22 are connected in sequence to form a closed elliptical ring-shaped curved groove. For example, the first arc groove 21 and the second arc groove 22 are symmetrical semi-elliptical arcs, and the two ends of the first arc groove 21 and the second arc groove 22 are connected in sequence to form an elliptical ring.

[0065] Among them, when the first movable hinge 50 and the second movable hinge 60 slide from the two end positions of the short axis of the elliptical ring to the two end positions of the long axis respectively, the length distance between the cover plate 10 and the base plate 20 gradually decreases, and the cover plate 10 and the base plate 20 gradually switch from the supporting position to the covering position.

[0066] In some embodiments, the fixed hinge includes a first fixed hinge 70 and a second fixed hinge 80, the first fixed hinge 70 is spaced apart on the side of the cover plate 10 facing the base plate 20, one end of the first fixed hinge 70 is fixedly connected to the cover plate 10, the other end of the first fixed hinge 70 is rotatably connected to the first arm 30, one end of the second fixed hinge 80 is fixedly connected to the cover plate 10, the other end of the second fixed hinge 80 is rotatably connected to the second arm 40, and the axis of rotation of the first arm 30 relative to the cover plate 10 is parallel to the axis of rotation of the second arm 40 relative to the cover plate 10.

[0067] Specifically, the first fixed hinge 70 includes a first fixing member 71 and a third rotating shaft 72. The other end of the first arm 30 away from the first movable portion 33 is provided with a first fixing portion 34 for cooperating with the first fixing member 71. One end of the first fixing member 71 is fixedly connected to the cover plate 10, and the other end is rotatably connected to the first fixing portion 34 through the third rotating shaft 72. The first fixing member 71 and the first fixing portion 34 are both provided with connecting holes for the third rotating shaft 72 to be plugged and matched.

[0068] The second fixed hinge 80 includes a second fixing member 81 and a fourth rotating shaft 82. The other end of the second arm 40 away from the second movable portion 43 is provided with a second fixing portion 44 for cooperating with the second fixing member 81. One end of the second fixing member 81 is fixedly connected to the cover plate 10, and the other end is rotatably connected to the second fixing portion 44 through the fourth rotating shaft 82. The second fixing member 81 and the second fixing portion 44 are both provided with connecting holes for the fourth rotating shaft 82 to be plugged and matched.

[0069] In some embodiments, a plurality of magnetic elements are disposed at the bottom of the curved groove, and the plurality of magnetic elements are spaced apart along the direction in which the curved groove extends, and the magnetic elements are used to be magnetically connected to one end of the movable hinge located in the curved groove. The magnetic element may be a magnetic iron, and the movable hinge may be made of ferromagnetic materials such as iron.

[0070] By providing a magnetic attraction member, the movable hinge can be fixed at a certain position of the curved groove by the magnetic attraction of the magnetic attraction member, thereby ensuring the structural stability of the rotation adjustment mechanism 100 when in use.

[0071] Specifically, the magnetic component includes a first magnetic component 211 and a second magnetic component 221, and the number of the first magnetic component 211 and the second magnetic component 221 is multiple, wherein the multiple first magnetic components 211 are arranged at the bottom of the first arc-shaped groove 21 and are spaced apart along the direction in which the first arc-shaped groove 21 extends, and the first magnetic component 211 is used to be magnetically connected to one end of the first movable hinge 50 located in the first arc-shaped groove 21, and the multiple second magnetic components 221 are arranged at the bottom of the second arc-shaped groove 22 and are spaced apart along the extension direction of the second arc-shaped groove 22, and the second magnetic component 221 is used to be magnetically connected to one end of the second movable hinge 60 located in the second arc-shaped groove 22.

[0072] Optionally, there are two first magnetic components 211, one of which is disposed at the bottom of the first proximal end of the first arc-shaped groove 21, and the other first magnetic component 211 is disposed at the bottom of the first distal end of the second arc-shaped groove 22, so that when the first movable hinge 50 is at the first proximal end and the first distal end, it can be magnetically fixed by the corresponding first magnetic components 211 respectively.

[0073] There are also two second magnetic components 221, one of which is disposed at the bottom of the second arc-shaped groove 22 near the second proximal end, and the other second magnetic component 221 is disposed at the bottom of the second arc-shaped groove 22 near the second distal end, so that when the second movable hinge 60 is at the second proximal end and the second distal end, they can be magnetically fixed by the corresponding second magnetic components 221 respectively.

[0074] In some embodiments, a stopper is provided at one end of the curved groove away from the center of the bottom plate 20. When the movable hinge abuts against the stopper, the cover plate 10 and the bottom plate 20 are in a closed position.

[0075] Specifically, the stopper includes a first stopper 212 and a second stopper 222, wherein the first stopper 212 is disposed at the first distal end of the first arc-shaped groove 21, and the second stopper 222 is disposed at the distal end of the second arc-shaped groove 22. When the first movable hinge 50 abuts against the first stopper 212 and the second movable hinge 60 abuts against the second stopper 222, the distance between the first movable hinge 50 and the second movable hinge 60 is at the maximum, and at this time, the cover plate 10 and the bottom plate 20 are in the closed position.

[0076] When the curved groove is in the form of an elliptical ring, the first stopper 212 and the second stopper are respectively disposed at two end points of the major axis of the elliptical ring in the curved groove.

[0077] When the curved groove is S-shaped, the first stopper 212 and the second stopper 222 are respectively disposed at two ends of the curved groove.

[0078] In some embodiments, the base plate 20 further includes an upper plate 23 and a lower plate 24. The upper plate 23 is detachably mounted on the lower plate 24. A curved groove is provided through the upper plate 23. The magnetic attraction part and the stopper are both provided on the side of the lower plate 24 facing the curved groove.

[0079] That is, the first arc groove 21 and the second arc groove 22 are arranged on the upper plate 23, the first magnetic attraction member 211 and the first stop portion 212 are arranged on the lower plate 24 at a position corresponding to the first arc groove 21, and the second magnetic attraction member 221 and the second stop portion 222 are arranged on the lower plate 24 at a position corresponding to the second arc groove 22.

[0080] In this embodiment, the bottom plate 20 is split into an upper plate 23 and a lower plate 24. The upper plate 23 is detachably mounted on the lower plate 24, and a curved groove is arranged on the upper plate 23. Components and structures such as a magnetic attraction part and a stopper are arranged on the lower plate 24. This method facilitates the processing and manufacturing of the bottom plate 20, as well as the installation of the bottom plate 20 and other components.

[0081] See also Figure 5 and Figure 6 , and combined with Figures 1 to 4 As shown, Figure 5 FIG. 1 shows a schematic structural diagram of the rotary adjustment mechanism 100 in the protective shell 200 provided in an embodiment of the present invention when the rotary adjustment mechanism 100 is in the closed position. Figure 6 The figure shows a schematic diagram of the structure of the protective shell 200 provided by the embodiment of the present invention when the rotation adjustment mechanism 100 is in the supporting position. The present invention also provides a protective shell 200, which includes a protective shell body 210 and the rotation adjustment mechanism 100 described in the above embodiments, and the rotation adjustment mechanism 100 is installed on the back of the protective shell body 210. The protective shell 200 can be applied to mobile terminal devices such as mobile phones and tablets, that is, the protective shell 200 can be a mobile phone protective shell, a tablet protective shell, etc., but is not limited thereto.

[0082] Specifically, the rotation adjustment mechanism 100 can be connected to the back of the protective shell body 210 through the cover plate 10 or the bottom plate 20, wherein the protective shell body 210 can adopt an existing design, which is not specifically limited here.

[0083] The protective shell 200 of this embodiment is provided with a rotation adjustment mechanism 100 on the back of the protective shell body 210, so that the bottom plate 20 and the cover plate 10 can be rotated relative to each other, so that the protective shell 200 can be adjusted at multiple angles, and the adjustment is simple, the storage is convenient, and the user is convenient to use.

[0084] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present invention should have the common meanings understood by technicians in the field to which the embodiments of the present invention belong.

[0085] In the description of the embodiments of the present invention, the directions or positional relationships indicated by technical terms such as "center", "length", "up", "down", "bottom", "inside", "outside", "clockwise", and "counterclockwise" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the embodiments of the present invention.

[0086] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present invention, the meaning of "plurality" includes two or more, unless otherwise clearly and specifically limited.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A rotation adjustment mechanism, characterized in that: include: A cover plate, a bottom plate, a first arm and a second arm; The bottom plate is provided with at least one curved groove; The middle part of the first arm is rotatably connected to the middle part of the second arm and can slide along the length direction of the first arm. One end of each of the first arm and the second arm is fixedly connected to one side of the cover plate through a fixed hinge, and the other end of each of the first arm and the second arm is movably connected to one side of the bottom plate through a movable hinge. At least one of the movable hinges of the first arm and the second arm can be movably placed in the curved groove. When the cover plate rotates relative to the bottom plate, at least one of the movable hinges can be driven to slide along the curved groove toward or away from another movable hinge, so that the cover plate and the bottom plate can be switched between a supporting position and a covering position; Wherein, a movable opening is provided at the middle section of the first arm, and the second arm passes through the movable opening and can slide in the movable opening along the length direction of the first arm; The curved groove includes a first arc groove and a second arc groove, and the first arc groove and the second arc groove are both bent toward the center of the bottom plate; The movable hinge includes a first movable hinge and a second movable hinge, one end of the first movable hinge is connected to the first arm, and the other end can be movably placed in the first arc groove, one end of the second movable hinge is connected to the second arm, and the other end can be movably placed in the second arc groove, so that the first movable hinge and the second movable hinge respectively move closer to or away from each other in a spiral manner around the center of the base plate.

2. The rotation adjustment mechanism according to claim 1, characterized in that: The length of the movable opening is greater than the length of the second arm; When in the supporting position, the first arm and the second arm are crossed; When in the covering position, the first arm and the second arm are accommodated in the covering space of the cover plate and the bottom plate, and the second arm is accommodated in the movable opening.

3. The rotation adjustment mechanism according to claim 2, characterized in that: A slide groove is provided on the side wall of the movable opening, and the slide groove extends along the length direction of the movable opening; A constraint shaft is provided at the middle position of the second arm. The constraint shaft is at least partially located in the slide groove and can drive the second arm to slide along the slide groove relative to the first arm.

4. The rotation adjustment mechanism according to claim 1, characterized in that: The first arcuate groove has a first proximal end and a first distal end, the second arcuate groove has a second proximal end and a second distal end, and the intersection of the line connecting the first proximal end and the second proximal end and the line connecting the first distal end and the second distal end coincides with the center of the base plate.

5. The rotation adjustment mechanism according to claim 4, characterized in that: The first arc groove and the second arc groove are centrally symmetrically arranged about the center of the bottom plate.

6. The rotation adjustment mechanism according to any one of claims 1 to 5, characterized in that: The fixed hinge includes a first fixed hinge and a second fixed hinge which are spaced apart on the cover plate, one end of the first fixed hinge is fixedly connected to the cover plate, and the other end is rotatably connected to the first arm, one end of the second fixed hinge is fixedly connected to the cover plate, and the other end is rotatably connected to the second arm, and an axis of rotation of the first arm relative to the cover plate is parallel to an axis of rotation of the second arm relative to the cover plate.

7. The rotation adjustment mechanism according to any one of claims 1 to 5, characterized in that: A plurality of magnetic elements are also provided at the bottom of the curved groove. The plurality of magnetic elements are spaced apart along the direction in which the curved groove extends. The magnetic elements are used to be magnetically connected to one end of the movable hinge located in the curved groove.

8. The rotation adjustment mechanism according to claim 7, characterized in that: A stopper is provided inside the curved groove at a position away from one end of the center of the bottom plate; When the movable hinge abuts against the stopper, the cover plate and the bottom plate are in a covering position.

9. The rotation adjustment mechanism according to claim 8, characterized in that: The bottom plate also includes an upper plate and a lower plate. The upper plate is detachably mounted on the lower plate. The curved groove is penetrated through the upper plate. The magnetic attraction member and the stopper are both arranged on a side of the lower plate facing the curved groove.

10. A protective shell, characterized in that: include: A protective shell body and a rotation adjustment mechanism as described in any one of claims 1 to 9, wherein the rotation adjustment mechanism is installed on the back of the protective shell body.

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