Rotating structure
By designing a rotating structure, the problems of the lack of a small table function and unstable limit of the office chair armrests were solved, realizing the stable unfolding and folding of the armrests, enhancing the integrity and reducing costs.
Patent Information
- Application Number
- CN202520360195.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-03
AI Technical Summary
The existing office chair armrests lack the function of a flip-out small table, and the single-axis hinge limit locking function is poor, making it difficult to achieve the preset working state, and it feels abrupt.
Design a rotating structure including a first connector, a second connector and a rotating component. Through the cooperation of a limiting part, a limiting boss, a locking part and a locking platform, the armrest block can be rotated 180° to form a plane and is hidden inside the armrest when folded to avoid abruptness.
It achieves stable unfolding and folding of the handrail, enhances the integrity of the whole, reduces the number of parts, lowers the cost, and forms a flat surface for placing items when unfolded.
Smart Images
Figure CN223715331U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of seat, especially a rotating structure. BACKGROUND
[0002] In modern life, the multifunctionality of seat is more and more highlighted, for example, the armrest of office chair, the existing seat armrest can generally adjust its position to meet the use demand of people, but in the existing armrest, the most important function is to support the human arm, on this basis, considering the cost factor, it leads to the armrest surface being the same as the slender shape; the armrest of this shape can effectively realize the function of supporting the human arm with less cost, so the manufacturers are consistent.
[0003] The armrest of sofa is generally larger in size, and is generally a block-shaped box, and the armrest surface is also slender, but some sofas have a small table plate hidden in the armrest which can be turned out, the user can open the armrest to rotate the small table plate upward first, and then rotate it to be horizontal, at this time, the user can place his articles on the small table plate; however, the armrest of office chair does not have such a function, we envisage that the armrest is divided into two parts which can be folded and unfolded to realize the function of the small table plate, when the rotating structure adopts a single shaft hinge, the rotating points of the two parts will be located outside the armrest, that is, the hinge will protrude from the surface of the armrest, which looks very conspicuous; moreover, the simple hinge limiting locking function is poor, and it is difficult to realize the preset work. SUMMARY
[0004] In order to solve the above technical problems, the utility model provides a rotating structure, including first connecting piece, second connecting piece and rotating piece, two connecting pieces are respectively connected in rotation on both sides of rotating piece, in the folding state, two connecting pieces are in the shape of closing and arc parallel, in the unfolded state, two connecting pieces are laid flat, and are in the same straight line with rotating piece, the rotating structure is more suitable for the turning between two armrest blocks, not only can form a platform when unfolding, but also can hide in the armrest when folding, and the integrity is better.
[0005] The technical scheme of the utility model is as follows:
[0006] A rotating structure, including first connecting piece, second connecting piece and rotating piece, first connecting piece and second connecting piece are respectively connected in rotation on both sides of rotating piece, the rotating structure has folding state and unfolded state, in the folding state, first connecting piece and second connecting piece are perpendicular to rotating piece, first connecting piece is parallel to the side of second connecting piece, in the unfolded state, first connecting piece and second connecting piece are laid flat on both sides of rotating piece, first connecting piece, second connecting piece and rotating piece are in the same straight line, the included angle between first connecting piece and second connecting piece is 180 DEG.
[0007] The rotation structure is suitable for turning between two armrest blocks. Firstly, folding and unfolding can be smoothly realized, and a 180° angle can form a plane in the unfolded state. Secondly, in the folded state, the positional relationship between the two connecting members and the rotating member is that the two connecting members are perpendicular to the rotating member, so that the rotating member does not protrude from the connecting member, which means that the rotating structure does not protrude from the armrest, and the integrity is better.
[0008] As a preferred, the first connecting member is provided with a first limiting part, the second connecting member is provided with a second limiting part, the rotating member is provided with a first rotating groove for avoiding the rotation of the first connecting member and a second rotating groove for avoiding the rotation of the second connecting member, the first limiting part is located in the first rotating groove, and the second limiting part is located in the second rotating groove; the first limiting part and the second limiting part rotate in the corresponding rotating groove with the rotation of the connecting member; the first rotating groove is provided with a first limiting boss, and the second rotating groove is provided with a second limiting boss; in the folded state, the first limiting boss abuts against the first limiting part, and the second limiting boss abuts against the second limiting part; the first connecting member is further provided with a first locking part, the second connecting member is further provided with a second locking part, the rotating member is provided with a first locking table near the first rotating groove, and the rotating member is provided with a second locking table near the second rotating groove; in the unfolded state, the first locking table abuts against the first locking part, and the second locking table abuts against the second locking part. Through the cooperation of the limiting part, the limiting boss, the locking part and the locking table, stability in the folded state and the unfolded state is realized, and when the connecting member and the rotating member cannot rotate, they will not shake. The scheme realizes limiting through a simpler structure, improves stability, does not need to set more parts for limiting, is convenient for assembly, and saves the cost of parts.
[0009] As a preferred, the angle between the locking part and the limiting part on the same connecting member is 90°, and the angle between the limiting boss and the locking table on the same side of the rotating member is 90°. In this way, the rotatable angle between the two connecting members and the rotating member is 90°, so that in the folded state, the two connecting members are parallel, and the angle is 0°, and in the unfolded state, the two connecting members are laid side by side, and the angle is 180°.
[0010] As a preferred, the rotating member and the first connecting member are rotatably connected through at least one first rotating shaft, and the rotating member and the second connecting member are rotatably connected through at least one second rotating shaft.
[0011] As preferred, the rotating piece comprises a containing part and two mounting parts, two ends of the containing part are connected with the two mounting parts respectively; the first connecting piece comprises a first rotating part, the second connecting piece comprises a second rotating part, the first rotating part and the second rotating part are both located between the two mounting parts, the first rotating part and the mounting part are rotationally connected through a first rotating shaft, the second rotating part and the mounting part are rotationally connected through a second rotating shaft; the first limiting part and the first locking part are arranged on the first rotating part, the first rotating part is rotationally arranged in the first rotating groove, the second limiting part and the second locking part are arranged on the second rotating part, the second rotating part is rotationally arranged in the second rotating groove. The rotating piece is a long strip-shaped part, the mounting parts are protruded at two ends, the two rotating parts can be arranged between the two mounting parts to realize rotation, when applied to furniture, such as applied to an armrest, the containing part can hide itself and the rotating part in the folded state.
[0012] As preferred, the first rotating part and the second rotating part are both in the shape of a cylinder, a corresponding limiting part and a locking part are cut in the middle part of the rotating part. The limiting part and the locking part are both directly formed on the rotating part, without the need of arranging parts for limiting, which greatly reduces the number of parts, facilitates assembly and reduces cost.
[0013] As preferred, the thickness of the containing part is smaller than the thickness of the mounting part, the depth of the first rotating groove and the second rotating groove is smaller than the thickness of the first rotating part and the second rotating part. The rotating groove is more inclined to be used for avoiding the rotating part, so that the connecting piece can smoothly rotate relative to the rotating piece, the thickness of the containing part is thin, so that the overall material consumption of the rotating piece can also be less.
[0014] As preferred, a group of first rotating shafts and second rotating shafts are arranged at the two ends of the rotating piece along the length direction of the rotating piece.
[0015] As preferred, the first rotating shafts and the second rotating shafts are arranged in the width direction of the rotating piece, and the first rotating shafts and the second rotating shafts are parallel to each other.
[0016] The design starting point, concept and beneficial effects of the utility model with the above technical scheme are:
[0017] The rotating structure is suitable for turning between two armrest blocks. Firstly, folding and unfolding can be smoothly realized, and a 180° angle can form a plane when unfolded. Secondly, when folded, the position relationship between the two connecting pieces and the rotating piece makes the rotating piece not protrude from the connecting piece, which means that when the rotating structure is used for an armrest, the rotating structure will not protrude from the armrest, and there will be no sense of strangeness, and the integration is better. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a three-dimensional structure schematic diagram of the multipurpose armrest in the expanded state of the embodiment of the utility model;
[0019] Figure 2 Movement schematic view of the bearing assembly of the utility model in the embodiment from the normal state to the extended state;
[0020] Figure 3 Schematic view of the three-dimensional structure of the multipurpose handrail in the embodiment of the utility model during the process of switching from the normal state to the extended state Figure 1 ;
[0021] Figure 4 Schematic view of the three-dimensional structure of the multipurpose handrail in the embodiment of the utility model during the process of switching from the normal state to the extended state Figure 2 ;
[0022] Figure 5 Schematic view of the three-dimensional structure of the multipurpose handrail in the embodiment of the utility model during the process of switching from the normal state to the extended state
[0023] Figure 6 Top view of the bearing assembly in the embodiment of the utility model in the extended state;
[0024] Figure 7 Cross-sectional view of A in the embodiment of the utility model Figure 6 ;
[0025] Figure 8 Cross-sectional view of B in the embodiment of the utility model Figure 6 ;
[0026] Figure 9 Exploded view of the bearing assembly and the state switching assembly in the embodiment of the utility model in the extended state;
[0027] Figure 10 Schematic view of the three-dimensional structure of the rotating structure in the embodiment of the utility model in the unfolded state;
[0028] Figure 11 Schematic view of the three-dimensional structure of the rotating structure in the embodiment of the utility model in the folded state;
[0029] Figure 12 Top view of the bearing assembly in the embodiment of the utility model in the normal state;
[0030] Figure 13 Cross-sectional view of D in the embodiment of the utility model Figure 12 ;
[0031] Figure 14 Exploded view of the bearing assembly and the state switching mechanism in the embodiment of the utility model in the normal state;
[0032] Figure 15 Schematic view of the three-dimensional structure of the first connecting piece in the embodiment of the utility model;
[0033] Figure 16 It is the three-dimensional structure schematic view of the second connecting piece in the embodiment of the utility model;
[0034] Figure 17 It is the three-dimensional structure schematic view of the rotating piece in the embodiment of the utility model;
[0035] Figure 18 It is the three-dimensional structure schematic view of the rotating shaft in the embodiment of the utility model.
[0036] The reference signs are: support assembly 1, rotating rod 101, rotating seat 102, support frame 103, fixed support piece 1031, lifting support piece 1032, bearing assembly 2, basic bearing piece 21, first notch 211, movable bearing piece 22, second notch 221, first connecting piece 3, first rotating part 31, first connecting part 32, first limiting part 33, first locking part 34, second connecting piece 4, second rotating part 41, second connecting part 42, second limiting part 43, second locking part 44, rotating piece 5, containing part 51, mounting part 52, first rotating groove 53, second rotating groove 54, first limiting boss 55, first locking platform 56, second limiting boss 57, second locking platform 58, mounting hole 59, limiting recess 591, normal bearing surface 61, widened bearing surface 62, component surface 7, anti-skid pad 8, first rotating shaft 9, second rotating shaft 10, damping sleeve 11, limiting convex strip 111, expansion part 112, support shaft 12, insertion hole 13. DETAILED DESCRIPTION
[0037] In order to more clearly understand the above purpose, features and advantages of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other without conflict.
[0038] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, however, the utility model can also be implemented in other ways different from the description herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.
[0039] In the description of the utility model, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0040] The specific embodiments of the utility model are as follows:
[0041] As shown in Figure 10 , 11 The utility model provides a rotating structure, which is applied to a multipurpose handrail, as shown in Figures 1-5 The multipurpose handrail comprises:
[0042] The support assembly 1 is configured to support the main body of the handrail;
[0043] The support assembly 2 is arranged on the support assembly 1, and the support assembly 2 is configured to support the arm. The support assembly 2 comprises a basic support member 21 and at least one movable support member 22, and the basic support member 21 is connected with the support assembly 1;
[0044] The state switching mechanism is connected with the basic support member 21 and the movable support member 22 respectively, and is configured to movably connect the movable support member 22 with the basic support member 21 and switch the handrail between the normal state and the expanded state;
[0045] The handrail has a normal state and an expanded state:
[0046] In the normal state, the movable support member 22 and the basic support member 21 are arranged side by side along the height direction, and the upper surface of the support assembly 2 forms an elongated normal support surface 61 for supporting the arm;
[0047] When switching from the normal state to the expanded state, the movable support member 22 moves to the side of the basic support member 21;
[0048] In the expanded state, the movable support member 22 is located beside the basic support member 21 with their long edges adjacent to each other, and the movable support member 22 and the basic support member 21 jointly form a widened support surface 62 for supporting the arm and the articles;
[0049] The width of the handrail in the expanded state is greater than the width of the handrail in the normal state.
[0050] When the rotating structure is in the folded state, the handrail is in the normal state, and when the rotating structure is in the unfolded state, the handrail is in the expanded state.
[0051] In the present solution, the support assembly 2 can move by means of the state switching mechanism, so as to switch the multipurpose handrail between the normal state and the expanded state. In the normal state, the multipurpose handrail is the same as a normal handrail, forming a normal support surface 61 for supporting an arm, and the seat with the multipurpose handrail can also be used as usual; when the multipurpose handrail is switched to the expanded state, the movable support piece 22 is located beside the basic support piece 21, and the long edges of the two are adjacent, and the arrangement of the two at this time greatly increases the original width and area, and can even be greater than the sum of the widths of the two support pieces, forming a widened support surface 62, and the multipurpose handrail is used as a small table board, and the user can easily place the items required for work such as a notebook, a tablet computer and the like thereon, and of course can also place items such as a water cup. In this way, the use scenarios that can be adapted to by the multipurpose handrail are greatly increased, the use requirements of people are met, and people can conveniently use the small table board on the office table.
[0052] Further, in the expanded state, the width of the multipurpose handrail is not less than the sum of the short edge lengths of the movable support piece 22 and the basic support piece 21, at this time the area of the widened support surface 62 is at least twice that of the normal support surface 61, and after greatly increasing the usable area, the multipurpose handrail can be used as a small table board.
[0053] In addition, it should be noted that in addition to the thickness, in the plane, the support piece is generally rectangular, and has two longer edges and two shorter edges, and in the case of no rotation, the left and right edges are generally long edges, and the front and rear edges are short edges. The support assembly 2 has at least two support pieces, and a plurality of support pieces can also achieve the above-mentioned effect, and two or more movable support pieces 22 can be arranged on the basic support piece 21 by means of the state switching mechanism. The state switching mechanism can be of various types, and the movable support piece 22 can be arranged on the basic support piece 21 by sliding, rotating or a combination of the two. The movable support piece 22 can be located above or below the basic support piece 21, or can be arranged inside the basic support piece 21.
[0054] In the present embodiment, the basic support piece 21 and the movable support piece 22 are both one, the state switching mechanism is a rotating mechanism, and the switching of the multipurpose handrail from the normal state to the expanded state is the process of switching the support assembly from the folded posture to the half-opened posture and then to the fully-opened posture. Specifically, as shown in FIG. 1, the multipurpose handrail is in the normal state, and the support assembly is in the folded posture, and the movable support piece 22 is located in the basic support piece 21. Figure 9 , 14As shown, the state switching mechanism includes a first connecting piece 3, a second connecting piece 4, and a rotating piece 5. The first connecting piece 3 is fixedly connected to the basic support 21 by screws, the second connecting piece 4 is fixedly connected to the movable support 22 by screws, the rotating piece 5 is rotatably connected to the first connecting piece 3 by at least one first rotating shaft 9, and the rotating piece 5 is rotatably connected to the second connecting piece 4 by at least one second rotating shaft 10. When the state switching mechanism is a rotating mechanism, it can realize the function of state switching. Among them, the first rotating shaft 9 and the second rotating shaft 10 are both two, along the length direction of the rotating piece 5, one set of first rotating shaft 9 and second rotating shaft 10 is arranged at both ends of the rotating piece 5; in the normal state and when the support assembly 2 and the support assembly 1 do not move, the support assembly 2 is arranged in the front and rear direction as a whole, the movable support 22 and the basic support 21 are arranged in the front and rear direction, and the edge of the support piece extending in the front and rear direction is the long side; the first rotating shaft 9 and the second rotating shaft 10 are arranged in the front and rear direction, and the length direction of the rotating piece 5 is also the front and rear direction. The first rotating shaft 9 and the second rotating shaft 10 are arranged in the width direction of the rotating piece 5, and the first rotating shaft 9 and the second rotating shaft 10 are parallel to each other.
[0055] As Figure 5 , 9 , 12-14, the basic support 21 is provided with a first notch 211, and the movable support 22 is provided with a second notch 221. The first notch 211 and the second notch 221 form a containing space, and the rotating piece 5 is arranged in the containing space; in the normal state, the rotating piece 5 is vertical, and in the expanded state, the rotating piece 5 is horizontal; whether in the normal state or in the expanded state, the state switching mechanism is located in the support assembly 2 without being conspicuous, increasing the integrity and visual effect; especially in the normal state, the rotating piece 5 can be hidden in the side edge of the support assembly 2, unlike direct single-axis hinging, which will protrude from the support assembly 2.
[0056] In the normal state, the movable support 22 is located above the basic support 21, which is equivalent to dividing the original handrail horizontally into two parts, forming the movable support 22 and the basic support 21.
[0057] Specifically, the state switching is realized by rotation:
[0058] As Figures 6-18As shown, the rotating member 5 includes a containing portion 51 and two mounting portions 52, two ends of the containing portion 51 are connected with the two mounting portions 52 respectively; the first connecting member 3 includes a first rotating portion 31 and a first connecting portion 32 for connecting the basic supporting member 21, the second connecting member 4 includes a second rotating portion 41 and a second connecting portion 42 for connecting the movable supporting member 22, the first rotating portion 31 and the second rotating portion 41 are both located between the two mounting portions 52, the first rotating portion 31 is rotationally connected with the mounting portion 52 through a first rotating shaft 9, the second rotating portion 41 is rotationally connected with the mounting portion 52 through a second rotating shaft 10, the rotating portion and the mounting portion 52 are both provided with the rotating shaft at the front and rear ends.
[0059] The rotating member 5 is provided with a first rotating groove 53 for avoiding the rotation of the first rotating portion 31 and a second rotating groove 54 for avoiding the rotation of the second rotating portion 41, the first rotating portion 31 is provided with a first limiting portion 33 and a second locking portion 34, the second rotating portion 41 is provided with a second limiting portion 43 and a second locking portion 44, the first rotating groove 53 is provided with a first limiting boss 55, the second rotating groove 54 is provided with a second limiting boss 57, the limiting portion located on the rotating portion is also located in the corresponding rotating groove and rotates in the rotating groove with the rotation of the connecting member relative to the rotating member 5, in the normal state, the first limiting boss 55 abuts against the first limiting portion 33, and the second limiting boss 57 abuts against the second limiting portion 43.
[0060] The rotating member 5 is provided with a first locking table 56 near the first rotating groove 53, and the first locking table 56 extends to the edge of the rotating member 5 towards the first connecting member 3, similarly, the rotating member 5 is provided with a second locking table 58 near the second rotating groove 54, and the second locking table 58 extends to the edge of the rotating member 5 towards the second connecting member 4, in the expanded state, the first locking table 56 abuts against the first locking portion 34, and the second locking table 58 abuts against the second locking portion 44.
[0061] The state after switching can be kept stable, especially in the normal state, after the limiting portion abuts against the limiting boss, the movable supporting member 22 can be prevented from shaking on the basic supporting member 21; the scheme realizes limiting through a more simple structure, improves stability, does not need to set more parts for limiting, is convenient for assembling, and saves the cost of parts.
[0062] More specifically, the rotating component 5 is a long strip-shaped part, with mounting portions 52 protruding at both ends. Two rotating parts can be positioned between the two mounting portions 52 to achieve rotation. The receiving portion 51 can conceal itself and the rotating parts in its normal state. The rotating parts are cylindrical and rotatably positioned in corresponding rotating grooves. A limiting portion and a locking portion are cut in the middle of the rotating part. This cutting is not a true cut, but rather refers to the rotating part not being a perfectly cylindrical shape, but rather forming an irregular shape with limiting and locking portions. Therefore, the limiting and locking portions are directly formed on the rotating part, eliminating the need for additional components for limiting, greatly reducing the number of components, facilitating assembly, and lowering costs. The thickness of the receiving portion 51 is less than the thickness of the mounting portion 52, and the depth of the rotating groove is less than the thickness of the rotating part. The rotating groove is primarily designed to avoid the rotating part, allowing the connecting part to rotate smoothly relative to the rotating component 5. The thinness of the receiving portion 51 reduces the overall material consumption of the rotating component 5, and the shallowness of the rotating groove accommodates the receiving portion 51. The first connecting part 3, the second connecting part 4, and the rotating part 5 are all metal parts, and the three are integrally formed.
[0063] Furthermore, the angle between the locking part and the limiting part on the same connector is 90°, and on the rotating member 5, the angle between the limiting boss and the locking platform on the same side is 90°. Similarly, when switching between the normal state and the extended state, the rotation angle between the first connector 3 and the rotating member 5 is 90°, and the rotation angle between the second connector 4 and the rotating member 5 is 90°. That is, in the normal state, the angle between the first locking part 34 and the first locking platform 56 is 90°, and in the extended state, the angle between the first limiting part 33 and the first limiting boss 55 is 90°, meaning that the rotation angle is 90° in both cases, ensuring that the movable support member 22 has a 180° rotation angle.
[0064] In this embodiment, it is necessary to ensure that in the normal state, the movable support 22 and the basic support 21 are stacked vertically. When switching to the extended state, the included angle between the movable support 22 and the basic support 21 is 180°, and the basic support 21 cannot rotate. The rotating part 5 is provided with a double rotating shaft for concealment, so both the rotating part 5 and the movable support 22 can rotate. In a single state switch, the rotating part 5 can rotate 90° relative to the basic support 21, and the movable support 22 can rotate 90° relative to the rotating part 5, which ensures that the final rotation angle of the movable support 22 is 180°. This is the significance of setting the above included angle.
[0065] To be more specific, such as Figure 6 , 7The first rotating shaft 9 and the second rotating shaft 10 each include a damping sleeve 11 and a supporting shaft 12, the rotating member 5 is provided with a plurality of mounting holes 59 corresponding to the first rotating shaft 9 and the second rotating shaft 10, the first connecting member 3 and the second connecting member 4 are provided with a plurality of insertion holes 13 corresponding to the mounting holes 59, the damping sleeve 11 is arranged in the mounting hole 59 and the insertion hole 13, the supporting shaft 12 is inserted into the damping sleeve 11, and the damping sleeve 11 is configured to increase the rotating damping of the rotating member 5, the first connecting member 3 and the second connecting member 4; the mounting hole 59 is further provided with a limiting groove 591, the damping sleeve 11 is provided with a limiting protrusion 111, the limiting protrusion 111 is arranged in the limiting groove 591, the damping sleeve 11 is circumferentially limited relative to the rotating member 5 to prevent relative rotation, and the damping sleeve 11 can increase the rotating damping when the connecting member rotates relative to the rotating member 5.
[0066] The damping sleeve 11 is in a hollow columnar shape, the damping sleeve 11 is made of PUM material, the damping sleeve 11 is elastic, the supporting shaft 12 is inserted into the damping sleeve 11 and extrudes the damping sleeve 11 outward, the damping sleeve 11, the supporting shaft 12, the mounting hole 59 and the insertion hole 13 are in interference fit, and the interference fit is mainly used to increase the friction between the damping sleeve 11 and the insertion hole 13. Specifically, the end portion of the damping sleeve 11 located at the bottom of the insertion hole 13 is separated to form at least two expansion portions 112 distributed in the circumferential direction, and the expansion portions 112 have a gap in the circumferential direction; in this way, the damping sleeve 11 can be conveniently inserted into the insertion hole 13, and the expansion facilitates the damping. In the embodiment, the expansion portions 112 are two, and the width of each of the two expansion portions 112 is less than the diameter of the damping sleeve 11.
[0067] The damping sleeve 11 is used to increase the rotating damping of the connecting member and the rotating member 5, to realize the damping hovering function, in structure, a plurality of components for increasing damping are not required to be arranged, assembly is facilitated, and component cost is saved; in function, the damping increases the multipurpose handrail, the movable supporting member 22 can be kept at any position, the movable supporting member 22 is prevented from suddenly falling down due to gravity, and the hand clamping situation is avoided; the supporting shaft 12 is a metal shaft, which is used to increase the connecting strength, keep the relative positions of the movable supporting member 22, the connecting member and the basic supporting member 21, and simultaneously expand the damping sleeve 11 to increase the friction.
[0068] Further, as shown in FIGS. 9, 14 and 18, the first rotating shaft 9 and the second rotating shaft 10 each include a damping sleeve 11 and a supporting shaft 12, the rotating member 5 is provided with a plurality of mounting holes 59 corresponding to the first rotating shaft 9 and the second rotating shaft 10, the first connecting member 3 and the second connecting member 4 are provided with a plurality of insertion holes 13 corresponding to the mounting holes 59, the damping sleeve 11 is arranged in the mounting hole 59 and the insertion hole 13, the supporting shaft 12 is inserted into the damping sleeve 11, and the damping sleeve 11 is configured to increase the rotating damping of the rotating member 5, the first connecting member 3 and the second connecting member 4; the mounting hole 59 is further provided with a limiting groove 591, the damping sleeve 11 is provided with a limiting protrusion 111, the limiting protrusion 111 is arranged in the limiting groove 591, the damping sleeve 11 is circumferentially limited relative to the rotating member 5 to prevent relative rotation, and the damping sleeve 11 can increase the rotating damping when the connecting member rotates relative to the rotating member 5. Figure 1 , 3, 6, 9, the movable supporting part 22 is rotatably arranged on the basic supporting part 21 through a state switching mechanism, in the normal state, the movable supporting part 22 is above the basic supporting part 21, and the two are stacked together, at this time, the end face of the movable supporting part 22 close to or close to the basic supporting part 21 is the assembly surface 7; in the expanded state, both assembly surfaces 7 are exposed upwards and form the widened supporting surface 62; the movable supporting part 22 located above does not need to avoid the support assembly 1, maintains the integrity of the movable supporting part 22, increases the area of the widened supporting surface 62, and is more practical; the anti-skid pads 8 are arranged on both assembly surfaces 7, which can be used to increase the friction of the widened supporting surface 62, and the articles will not slide or fall after being placed. In the expanded state, the upper surface of the movable supporting part 22 and the basic supporting part 21 exposed by the state switching mechanism is part of the widened supporting surface 62.
[0069] The existing support assembly 1 has many forms, in order to make the implementation effect of the scheme better, the movable support assembly 1 is adopted, and the specific structure of the support assembly 1 will not be repeated; the support assembly 1 includes a rotating rod 101, a rotating seat 102 and a support frame 103, the support frame 103 is used for connecting a seat, the rotating seat 102 is arranged on the support frame 103, one end of the rotating rod 101 is rotatably connected to the rotating seat 102, and the basic supporting part 21 is rotatably arranged on the other end of the rotating rod 101; in the expanded state, the small table plate can also move in multiple dimensions like the armrest, and can be moved to the position required by the user, and is more suitable; the support frame 103 includes a fixed support 1031 and a lifting support 1032, and the rotating seat 102 is arranged on the lifting support 1032; such a variable small table plate has more advantages than the existing small table plate converted from the armrest, is more flexible, and has better use experience. In addition, the supporting assembly 1 is also tiltably rotatably arranged on the supporting assembly 1.
[0070] When the multipurpose armrest is used in a seat, both sides of the seat are provided with armrests, and at least one side of the armrest is the multipurpose armrest, when the multipurpose armrest is in the normal state, it is used for supporting the arm of the human body, and when the multipurpose armrest is in the expanded state, it can also be used as a small table plate to support articles.
Claims
1. A rotating structure, characterized by: The application relates to a folding structure, which comprises a first connecting piece, a second connecting piece and a rotating piece, the first connecting piece and the second connecting piece are respectively rotationally connected on the two sides of the rotating piece, the rotating structure has a folding state and an unfolding state; in the folding state, the first connecting piece and the second connecting piece are perpendicular to the rotating piece, and the first connecting piece is parallel to the second connecting piece; in the unfolding state, the first connecting piece and the second connecting piece are laid on the two sides of the rotating piece, the first connecting piece, the second connecting piece and the rotating piece are in the same straight line, and the included angle between the first connecting piece and the second connecting piece is 180 DEG.
2. The rotating structure of claim 1, wherein: The first connecting piece is provided with a first limiting part, the second connecting piece is provided with a second limiting part, the rotating piece is provided with a first rotating groove for avoiding the rotation of the first connecting piece and a second rotating groove for avoiding the rotation of the second connecting piece, the first limiting part is located in the first rotating groove, the second limiting part is located in the second rotating groove, and the first limiting part and the second limiting part rotate in the corresponding rotating grooves along with the rotation of the connecting pieces; the first rotating groove is provided with a first limiting boss, the second rotating groove is provided with a second limiting boss, in the folding state, the first limiting boss is in abutment with the first limiting part, and the second limiting boss is in abutment with the second limiting part; the first connecting piece is further provided with a first locking part, the second connecting piece is further provided with a second locking part, the rotating piece is provided with a first locking table near the first rotating groove and a second locking table near the second rotating groove, and in the unfolding state, the first locking table is in abutment with the first locking part, and the second locking table is in abutment with the second locking part.
3. The rotating structure of claim 2, wherein: The included angle between the locking part and the limiting part on the same connecting piece is 90 DEG, and the included angle between the limiting boss and the locking table on the same side of the rotating piece is 90 DEG.
4. The rotating structure of claim 2, wherein: The rotating piece is rotationally connected with the first connecting piece through at least one first rotating shaft, and the rotating piece is rotationally connected with the second connecting piece through at least one second rotating shaft.
5. The rotating structure of claim 4, wherein: The rotating piece comprises a containing part and two mounting parts, the two ends of the containing part are connected with the two mounting parts respectively, the first connecting piece comprises a first rotating part, the second connecting piece comprises a second rotating part, the first rotating part and the second rotating part are located between the two mounting parts, the first rotating part is rotationally connected with the mounting part through a first rotating shaft, and the second rotating part is rotationally connected with the mounting part through a second rotating shaft; the first limiting part and the first locking part are arranged on the first rotating part, and the first rotating part is rotationally arranged in the first rotating groove; the second limiting part and the second locking part are arranged on the second rotating part, and the second rotating part is rotationally arranged in the second rotating groove.
6. The rotating structure of claim 5, wherein: The first rotating part and the second rotating part are both in the shape of a cylinder, and the corresponding limiting part and locking part are cut in the middle part of the rotating part.
7. The rotating structure of claim 5, wherein: The thickness of the containing part is smaller than the thickness of the mounting part, and the depth of the first rotating groove and the second rotating groove is smaller than the thickness of the first rotating part and the second rotating part.
8. The rotating structure of claim 4, wherein: A group of first rotating shafts and second rotating shafts are arranged at the two ends of the rotating piece along the length direction of the rotating piece.
9. The rotating structure of claim 4, wherein: The first rotating shafts and the second rotating shafts are arranged in the width direction of the rotating piece, and the first rotating shafts and the second rotating shafts are parallel to each other.