Multipurpose handrail and application thereof

Abstract

The invention provides a multipurpose handrail and application thereof, the multipurpose handrail comprises a supporting assembly, a bearing assembly and a state switching mechanism, the bearing assembly is arranged on the supporting assembly, the bearing assembly comprises a basic bearing piece and at least one movable bearing piece, and the basic bearing piece and the movable bearing piece are connected through the state switching mechanism; the state switching mechanism is configured to enable the movable bearing piece to move and enable the multipurpose armrest to be switched between a normal state and an extended state; in a conventional state, the bearing assembly is in a conventional handrail shape, and a slender conventional bearing face is formed and used for bearing arms. In the expanding state, the movable bearing piece is located beside the basic bearing piece, the long edges of the movable bearing piece and the basic bearing piece are adjacent, a widened bearing face is jointly formed, and at the moment, the bearing assembly is in a platform shape and can be used as a small table board to meet the requirement that people directly place objects on a seat.

Description

Technical Field

[0001] The invention relates to the field of seats, and in particular to a multi-purpose armrest and application thereof. Background Art

[0002] In modern life, the multifunctionality of seats is becoming more and more prominent. Take the armrests of office chairs as an example. The existing armrests of chairs can generally adjust their positions to meet people's usage needs. However, in the existing armrests, their most important function is to support human arms. On this basis, considering the cost factors, the armrest surfaces are all slender in shape. This shape of armrest can effectively support human arms at a lower cost, so manufacturers stick to it.

[0003] In some cases, such as small meetings in the office that are not held at the conference table, if people want to record the meeting, they can only raise their arms and write on a notebook with their hands suspended in the air. Although there are armrests to support the arms, it is not convenient to write. It is not as comfortable as placing the notebook on the table, and maintaining this posture for a long time will also make people feel tired.

[0004] Take the armrest of a sofa as an example. The armrest of a sofa is generally larger and block-shaped, and the armrest surface is also slender. However, some sofas have a small table hidden in the armrest. The user can open the armrest and rotate the small table upwards, and then rotate it to horizontal. At this time, the user can place his or her belongings on the small table, such as the sofas in some movie theaters. Of course, some small tables are foldable to accommodate the space.

[0005] For office chairs, due to their portability and simplicity, their armrests do not have space to accommodate a small table, so they cannot be used to place items. If an office chair armrest that solves this technical problem can be designed, it will be a groundbreaking invention. Summary of the invention

[0006] In order to solve the above-mentioned technical problems, the present invention provides a multi-purpose armrest, including a supporting assembly, a bearing assembly and a state switching mechanism, wherein the supporting assembly is arranged on the supporting assembly, and the supporting assembly includes a basic supporting member and at least one movable supporting member, and the two are connected by a state switching mechanism; the state switching mechanism is configured to make the movable supporting member movable and to switch the multi-purpose armrest between a normal state and an extended state; in the normal state, the supporting assembly is in the shape of a conventional armrest, forming an elongated conventional supporting surface for supporting the arm; in the extended state, the movable supporting member is located beside the basic supporting member and the long sides of the two are adjacent to each other, together forming a widened supporting surface. At this time, the supporting assembly is in the shape of a platform and can be used as a small table to meet people's needs of placing items directly on the seat.

[0007] Further provided is an application of a multi-purpose armrest, in which at least one of the two armrests of the seat is the multi-purpose armrest, which is used to support the arms of a human body when in a normal state, and can also be used as a table top to support objects when in an extended state.

[0008] The technical solution of the present invention is achieved in this way: A multi-purpose handrail, comprising: A support assembly configured as the main support of the handrail; A supporting assembly, arranged on the supporting assembly, the supporting assembly is configured to support the arm; the supporting assembly comprises a basic supporting member and at least one movable supporting member, the basic supporting member is connected to the supporting assembly; A state switching mechanism is connected to the basic supporting member and the movable supporting member respectively; the state switching mechanism is configured to enable the movable supporting member to be movably connected to the basic supporting member and enable the armrest to switch between a normal state and an extended state; The armrest has a normal state and an extended state: In a normal state, the movable supporting member and the basic supporting member are distributed along the height direction, and the upper surface of the supporting component forms a normal supporting surface for supporting the arm; When switching from the normal state to the extended state, the movable supporting member moves to the side of the basic supporting member; In the extended state, the movable supporting member is located beside the basic supporting member and the long sides of the two are adjacent, and the movable supporting member and the upper surface of the basic supporting member together form a widened supporting surface that can support both the arm and the object; And in the extended state, the width of the armrest is greater than that in the normal state.

[0009] In this solution, the supporting component can move by means of a state switching mechanism, so that the multi-purpose armrest can switch between a normal state and an extended state. In the normal state, the multi-purpose armrest is the same as a conventional armrest, and a conventional supporting surface for supporting the arm is formed, and the seat with the multi-purpose armrest can be used as usual; and when the multi-purpose armrest is switched to the extended state, the movable supporting member is located beside the basic supporting member, and the long sides of the two are adjacent. 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 supporting members. The supporting surface formed at this time is a widened supporting surface. The multi-purpose armrest is used as a small table, and the user can easily place notebooks, tablet computers and other items needed for work on it, and of course, can also place items such as water cups. This greatly increases the use scenarios that the multi-purpose armrest can adapt to, meets more usage needs of people, and allows people to conveniently use the small table on their desks.

[0010] Except for the thickness, the supporting member is roughly rectangular in the plane, with two longer sides and two shorter sides. When not rotated, the two sides on the left and right are generally long sides, and the two sides on the front and back become short sides.

[0011] The supporting assembly has at least two supporting parts, and multiple supporting parts can also achieve the above effect, and more than two movable supporting parts can be set on the basic supporting part through a state switching mechanism.

[0012] The state switching mechanism may be of various types, and the movable supporting member may be arranged on the basic supporting member in a sliding, rotating or a combination of the two.

[0013] The movable supporting member may be located above or below the basic supporting member, and may even be arranged inside the basic supporting member.

[0014] Preferably, the width of the armrest in the expanded state is not less than the sum of the short side lengths of the movable supporting member and the basic supporting member. At this time, the area of ​​the widened supporting surface is at least twice that of the conventional supporting surface, which greatly increases the usable area and can be used as a small table.

[0015] Preferably, the movable supporting member is rotatably arranged on the basic supporting member through the state switching mechanism. In the normal state, the movable supporting member is located above the basic supporting member, and the end surface of the movable supporting member close to the basic supporting member is the component surface; in the extended state, both component surfaces are exposed upward and form the widened supporting surface. The movable supporting member located above does not need to avoid the supporting assembly, maintains the integrity of the movable supporting member, increases the area of ​​the widened supporting surface, and is more practical.

[0016] Preferably, anti-skid pads are provided on both component surfaces, which can be used to increase the friction of the widened supporting surface, so that the items placed therein will not slide or fall.

[0017] Preferably, the movable supporting member is rotatably disposed on the basic supporting member through a state switching mechanism, and in a normal state, the movable supporting member is located below the basic supporting member.

[0018] Preferably, in the extended state, the state switching mechanism is exposed on the upper surfaces of the movable supporting member and the basic supporting member to form a part of the widened supporting surface.

[0019] Preferably, the state switching mechanism is a rotating mechanism, and the state switching mechanism includes a first connecting member, a second connecting member, and a rotating member, wherein the first connecting member is connected to the basic supporting member, the second connecting member is connected to the movable supporting member, the rotating member is rotatably connected to the first connecting member through at least one first rotating shaft, and the rotating member is rotatably connected to the second connecting member through at least one second rotating shaft. When the state switching mechanism is a rotating mechanism, the state switching function can be realized.

[0020] Preferably, the basic supporting member is provided with a first notch, the movable supporting member is provided with a second notch, the first notch and the second notch form an accommodation space, and the rotating member is arranged in the accommodation space. Whether in the normal state or the extended state, the state switching mechanism is located in the supporting assembly without any abruptness, thereby increasing the integrity and visual effect; in particular, in the normal state, the rotating member can be hidden in the side of the supporting assembly, unlike a direct single-axis hinge, which will protrude from the supporting assembly.

[0021] Preferably, the first connecting member is provided with a first limiting portion, the second connecting member is provided with a second limiting portion, and the rotating member is provided with a first rotating groove for avoiding rotation of the first connecting member and a second rotating groove for avoiding rotation of the second connecting member, the limiting portion is also located in the rotating groove and rotates in the rotating groove as the connecting member rotates relative to the rotating member; a first limiting boss is provided in the first rotating groove, and a second limiting boss is provided in the second rotating groove, and under normal conditions, the first limiting boss abuts against the first limiting portion, and the second limiting boss abuts against the second limiting portion; the first connecting member is also provided with a first locking portion, and the second connecting member is also provided with a second locking portion, a first locking platform is provided at a position of the rotating member close to the first rotating groove, and a second locking platform is provided at a position of the rotating member close to the second rotating groove, and in an extended state, the first locking platform abuts against the first locking portion, and the second locking platform abuts against the second locking portion. It can remain stable after state switching, especially in the normal state, after the limit part abuts against the limit boss, it can prevent the movable supporting member from shaking on the basic supporting member; this solution achieves limitation through a simpler structure, improves stability, does not require more components for limiting, facilitates assembly, and saves component costs.

[0022] Preferably, 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 platform on the same side of the rotating member is 90°. It is necessary to ensure that in the normal state, the movable supporting member and the basic supporting member are superimposed on each other, and when switched to the extended state, the angle between the movable supporting member and the basic supporting member is 180°, and the basic supporting member cannot rotate. The rotating member is provided with a double shaft for hiding, so both the rotating member and the movable supporting member can rotate. In a single state switching, the rotating member can rotate 90° relative to the basic supporting member, and the movable supporting member can rotate 90° relative to the rotating member to ensure that the final rotation angle of the movable supporting member is 180°. This is the significance of setting the above-mentioned angle.

[0023] Preferably, the rotating member includes a receiving portion and two mounting portions, and the two ends of the receiving portion are connected to the two mounting portions respectively; the first connecting member includes a first rotating portion, and the second connecting member includes a second rotating portion, and the first rotating portion and the second rotating portion are both located between the two mounting portions, and the first rotating portion and the mounting portion are rotationally connected through a first rotating shaft, and the second rotating portion and the mounting portion are rotationally connected through a second rotating shaft; the first limiting portion and the first locking portion are arranged on the first rotating portion, and the first rotating portion is rotationally arranged in the first rotating groove, and the second limiting portion and the second locking portion are arranged on the second rotating portion, and the second rotating portion is rotationally arranged in the second rotating groove. The rotating member is a long strip-shaped component, and the mounting portions are protrudingly located at both ends, and the two rotating portions can be arranged just between the two mounting portions to realize rotation, and the receiving portion can hide itself and the rotating portion under normal conditions.

[0024] Preferably, the rotating part is cylindrical, and a limiting part and a locking part are cut in the middle of the rotating part. The limiting part and the locking part are directly formed on the rotating part, and there is no need to set parts for limiting, which greatly reduces the number of parts, facilitates assembly and reduces costs.

[0025] Preferably, the thickness of the accommodating portion is less than the thickness of the mounting portion, and the depth of the rotating groove is less than the thickness of the rotating portion. The rotating groove is more inclined to avoid the rotating portion, so that the connecting member can smoothly rotate relative to the rotating member. The thickness of the accommodating portion is thin, the state switching mechanism can be hidden or slightly protruded from the supporting component, and the overall consumables of the rotating member can be reduced. The depth of the rotating groove is shallower to accommodate the accommodating portion. In addition, the accommodating portion can cover the hinge structure to prevent accidental pinching of the skin during flipping.

[0026] Preferably, when switching between the normal state and the extended state, the rotation angle between the first connecting member and the rotating member is 90°, and the rotation angle between the second connecting member and the rotating member is 90°. That is, in the normal state, the angle between the first locking portion and the first locking platform is 90°, and in the extended state, the angle between the first limiting portion and the first limiting boss is 90°, that is, the rotation angle is 90°, ensuring that the movable supporting member has a rotatable angle of 180°.

[0027] Preferably, the first rotating shaft and the second rotating shaft both include a damping sleeve and a supporting shaft, the rotating member is provided with mounting holes of the same number as the first rotating shaft and the second rotating shaft, the first connecting member and the second connecting member are provided with plug holes corresponding to the mounting holes, the mounting holes and the plug holes are provided with the damping sleeve, the supporting shaft is inserted in the damping sleeve, and the damping sleeve is configured to increase the rotation damping of the rotating member and the first connecting member and the second connecting member. The damping sleeve is used to increase the rotation damping of the connecting member and the rotating member to realize the damping suspension function. In terms of structure, there is no need to set a plurality of parts for increasing damping, which is convenient for assembly and saves the cost of parts. In terms of function, the multi-purpose handrail after adding damping can stay when the movable supporting member rotates to any position, preventing the movable supporting member from suddenly turning down due to gravity, and also avoiding the occurrence of pinching. The supporting shaft is a metal shaft, which is used to increase the connection strength, maintain the relative position between the movable supporting member, the connecting member, and the basic supporting member, and at the same time to prop up the damping sleeve to increase the friction.

[0028] Preferably, the damping sleeve is elastic, the support shaft is inserted into the damping sleeve and presses the damping sleeve outward, and the damping sleeve, the support shaft, the mounting hole and the plug hole are all interference fit, mainly to increase the friction between the damping sleeve and the plug hole.

[0029] Preferably, a limiting groove is further provided in the mounting hole, and a limiting convex strip is provided on the damping sleeve, and the limiting convex strip is arranged in the limiting groove. There is a circumferential limit between the damping sleeve and the rotating member to prevent the two from rotating relative to each other. When the connecting member rotates relative to the rotating member, the damping sleeve can play a role and increase the rotation damping.

[0030] Preferably, the end of the damping sleeve at the bottom of the jack is separated to form at least two circumferentially distributed expansion parts, and there is a gap between the expansion parts in the circumferential direction. This solution is convenient for the damping sleeve to be inserted into the jack and is conducive to expansion to achieve damping.

[0031] Preferably, the damping sleeve is in a hollow column shape and is made of POM material.

[0032] Preferably, the first rotating shaft and the second rotating shaft are arranged at intervals along the width direction of the rotating member, and the first rotating shaft and the second rotating shaft are parallel to each other; in a normal state, the rotating member is vertical, and in an extended state, the rotating member is horizontal.

[0033] Preferably, a group of first rotating shaft and a group of second rotating shaft are respectively provided at two ends of the rotating member along the length direction of the rotating member.

[0034] Preferably, the first connecting member is fixedly connected to the basic supporting member by screws, and the second connecting member is fixedly connected to the movable supporting member by screws.

[0035] Preferably, the support assembly includes a rotating rod, a rotating seat and a support frame, the support frame is used to connect the seat, the rotating seat is arranged on the support frame, one end of the rotating rod is rotatably connected to the rotating seat, and the basic supporting member is rotatably arranged on the other end of the rotating rod. In the extended state, the small table top can also move in multiple dimensions like the armrest, and can move to the position required by the user, which has a wider applicability.

[0036] Preferably, the support frame includes a fixed support member and a lifting support member, and the rotating seat is arranged on the lifting support member. Such a changeable small table is more advantageous and flexible than the existing small table converted from non-armrests, and the user experience is better. In addition, the supporting component can also be arranged on the supporting component in a tilting and rotating manner.

[0037] An application of the multi-purpose armrest as described above, wherein armrests are provided on both sides of the seat and at least one of the armrests on one side is the multi-purpose armrest. When the multi-purpose armrest is in a normal state, it is used to support the arms of the human body. When the multi-purpose armrest is in an extended state, it can also be used as a table top to support objects.

[0038] The design starting point, concept and beneficial effects of the present invention using the above technical solution are: In this solution, the supporting component can move by means of a state switching mechanism, so that the multi-purpose armrest can switch between a normal state and an extended state. In the normal state, the multi-purpose armrest is the same as a conventional armrest, and a conventional supporting surface for supporting the arm is formed, and the seat with the multi-purpose armrest can be used as usual; and when the multi-purpose armrest is switched to the extended state, the movable supporting member is located beside the basic supporting member, and the long sides of the two are adjacent. 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 supporting members. The supporting surface formed at this time is a widened supporting surface. The multi-purpose armrest is used as a small table, and the user can easily place notebooks, tablet computers and other items needed for work on it, and of course, can also place items such as water cups. This greatly increases the use scenarios that the multi-purpose armrest can adapt to, meets more usage needs of people, and allows people to conveniently use the small table on their desks.

[0039] The state switching mechanism is a rotating mechanism, which can realize functions such as limiting and hovering without the need for extra parts, thereby improving stability and safety in use. Moreover, under the action of the supporting assembly, the supporting assembly can also perform multi-dimensional movement, and the small table in the extended state can also be moved to the position required by the user as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the multi-purpose armrest in the expanded state in the embodiment of the present invention; Figure 2is a schematic diagram of the movement of the supporting assembly when switching from a normal state to an extended state in an embodiment of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the multi-purpose armrest during the process of switching from the normal state to the extended state in the embodiment of the present invention Figure 1 ; Figure 4 Schematic diagram of the three-dimensional structure of the multi-purpose armrest during the process of switching from the normal state to the extended state in the embodiment of the present invention Figure 2 ; Figure 5 It is a schematic diagram of the three-dimensional structure of the multi-purpose handrail in a normal state in an embodiment of the present invention; Figure 6 A top view of the supporting assembly in the expanded state in the embodiment of the present invention; Figure 7 for Figure 6 Sectional view at A in the middle; Figure 8 for Figure 6 Sectional view at B in the middle; Fig. 9 An exploded view of the supporting component and the state switching component in the expanded state in the embodiment of the present invention; Fig.10 A top view of the supporting assembly during the process of switching from a normal state to an extended state in an embodiment of the present invention; Fig.11 for Fig.10 Sectional view at C in the middle; Fig.12 A top view of the supporting assembly in a normal state in an embodiment of the present invention; Fig.13 for Fig.12 Sectional view at D in the middle; Fig.14 An exploded view of the supporting assembly and the state switching mechanism in a normal state in an embodiment of the present invention; Fig.15 is a schematic diagram of the three-dimensional structure of the first connecting member in an embodiment of the present invention; Fig.16 is a schematic diagram of the three-dimensional structure of the second connecting member in an embodiment of the present invention; Fig.17 It is a schematic diagram of the three-dimensional structure of the rotating member in the embodiment of the present invention; Fig.18 It is a schematic diagram of the three-dimensional structure of the rotating shaft in an embodiment of the present invention.

[0041] The reference numerals of the drawings are as follows: support assembly 1; rotating rod 101; rotating seat 102; supporting frame 103; fixed supporting member 1031; lifting supporting member 1032; supporting assembly 2; basic supporting member 21; first notch 211; movable supporting member 22; second notch 221; first connecting member 3; first rotating portion 31; first connecting portion 32; first limiting portion 33; first locking portion 34; second connecting member 4; second rotating portion 41; second connecting portion 42; second limiting portion 43 ; second locking portion 44; rotating member 5; accommodating portion 51; mounting portion 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 groove 591; conventional supporting surface 61; widened supporting surface 62; component surface 7; anti-slip pad 8; first rotating shaft 9; second rotating shaft 10; damping sleeve 11; limiting convex strip 111; expansion portion 112; support shaft 12; socket 13. DETAILED DESCRIPTION

[0042] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0044] In the description of the present invention, the terms “first”, “second”, “third”, etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0045] The specific implementation of the present invention is as follows: like Figure 1-5 As shown, the present invention provides a multi-purpose handrail, comprising: Support assembly 1, configured as the main support of the handrail; The supporting assembly 2 is arranged on the supporting assembly 1 and is configured to support the arm. The supporting assembly 2 includes a basic supporting member 21 and at least one movable supporting member 22, and the basic supporting member 21 is connected to the supporting assembly 1; The state switching mechanism is connected to the basic supporting member 21 and the movable supporting member 22 respectively; the state switching mechanism is configured to enable the movable supporting member 22 to be movably connected to the basic supporting member 21 and enable the armrest to switch between a normal state and an extended state; The armrest has a normal state and an extended state: In a normal state, the movable supporting member 22 and the basic supporting member 21 are arranged side by side in the height direction, and the upper surface of the supporting assembly 2 forms an elongated normal supporting surface 61 for supporting the arm; When switching from the normal state to the extended state, the movable supporting member 22 moves to the side of the basic supporting member 21; In the extended state, the movable supporting member 22 is located beside the basic supporting member 21 and the long sides of the two are adjacent to each other. The movable supporting member 22 and the basic supporting member 21 together form a widened supporting surface 62 for supporting arms and objects. The width of the armrest in the extended state is greater than the width of the armrest in the normal state.

[0046] In this solution, the supporting component 2 can move by means of the state switching mechanism, so that the multi-purpose armrest can be switched between the normal state and the extended state. In the normal state, the multi-purpose armrest is the same as the conventional armrest, and is formed with a conventional supporting surface 61 for supporting the arm, and the seat with the multi-purpose armrest can also be used as usual; when the multi-purpose armrest is switched to the extended state, the movable supporting member 22 is located beside the basic supporting member 21, and the long sides of the two are adjacent. 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 supporting members. The supporting surface formed at this time is the widened supporting surface 62. The multi-purpose armrest is used as a small table, and the user can easily place the items needed for work such as notebooks and tablets on it, and of course, can also place items such as water cups. In this way, the use scenarios that the multi-purpose armrest can adapt to are greatly increased, and more people's use needs are met, so that people can conveniently use the small table on their desks.

[0047] Furthermore, the width of the multi-purpose armrest in the extended state is not less than the sum of the short side lengths of the movable supporting member 22 and the basic supporting member 21. At this time, the area of ​​the widened supporting surface 62 is at least twice that of the conventional supporting surface 61, which greatly increases the usable area and can be used as a small table top.

[0048] It should also be noted that, except for the thickness, in the plane, the supporting member is roughly rectangular, with two longer sides and two shorter sides. When not rotating, the two sides on the left and right are generally long sides, and the two sides on the front and back become short sides. The supporting assembly 2 has at least two supporting members, and multiple supporting members can also achieve the above effect. More than two movable supporting members 22 can be set on the basic supporting member 21 through a state switching mechanism. The state switching mechanism can be of various types, and the movable supporting member 22 can be set on the basic supporting member 21 by sliding, rotating, or a combination of the two. The movable supporting member 22 can be located above or below the basic supporting member 21, and can even be set inside the basic supporting member 21.

[0049] In this embodiment, there is one basic supporting member 21 and one movable supporting member 22, and the state switching mechanism is a rotating mechanism. The multi-purpose armrest switches from the normal state to the extended state, which is the process of the supporting component switching from the closed state to the semi-expanded state and then to the fully expanded state. Specifically, Fig. 9 , 14 As shown, the state switching mechanism includes a first connecting member 3, a second connecting member 4 and a rotating member 5. The first connecting member 3 is fixedly connected to the basic supporting member 21 by screws, the second connecting member 4 is fixedly connected to the movable supporting member 22 by screws, the rotating member 5 is rotationally connected to the first connecting member 3 by at least one first rotating shaft 9, and the rotating member 5 is rotationally connected to the second connecting member 4 by at least one second rotating shaft 10; when the state switching mechanism is a rotating mechanism, the state switching function can be realized. Among them, there are two first rotating shafts 9 and two second rotating shafts 10, and a group of first rotating shafts 9 and second rotating shafts 10 are respectively provided at both ends of the rotating member 5 along the length direction of the rotating member 5; under normal conditions and when the supporting assembly 2 and the supporting assembly 1 do not move, the supporting assembly 2 is arranged as a whole in the front-to-back direction, the movable supporting member 22 and the basic supporting member 21 are arranged along the front-to-back direction, and the side of the supporting member extending along the front-to-back direction is the long side; the first rotating shaft 9 and the second rotating shaft 10 are arranged along the front-to-back direction, and the length direction of the rotating member 5 is also the front-to-back direction. The first rotating shaft 9 and the second rotating shaft 10 are arranged at intervals along the width direction of the rotating member 5, and the first rotating shaft 9 and the second rotating shaft 10 are parallel to each other.

[0050] like Figure 5 , 9 As shown in 12-14, the basic supporting member 21 is provided with a first notch 211, and the movable supporting member 22 is provided with a second notch 221. The first notch 211 and the second notch 221 form an accommodating space, and the rotating member 5 is arranged in the accommodating space; in the normal state, the rotating member 5 is vertical, and in the extended state, the rotating member 5 is horizontal; no matter in the normal state or the extended state, the state switching mechanism is located in the supporting component 2 without any abruptness, thereby increasing the integrity and visual effect; especially in the normal state, the rotating member 5 can be hidden in the side of the supporting component 2, and will not protrude from the supporting component 2 like a direct single-axis hinge.

[0051] In a normal state, the movable supporting member 22 is located above the basic supporting member 21 , which is equivalent to dividing the original handrail horizontally into two parts to form the movable supporting member 22 and the basic supporting member 21 .

[0052] Specifically, the state is switched from rotation to: like Figure 6-18As shown, the rotating member 5 includes a receiving portion 51 and two mounting portions 52, and the two ends of the receiving portion 51 are respectively connected to the two mounting portions 52; 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 and the mounting portion 52 are rotationally connected through the first rotating shaft 9, the second rotating portion 41 and the mounting portion 52 are rotationally connected through the second rotating shaft 10, and the rotating portion and the mounting portion 52 are both provided with rotating shafts at the front and rear ends.

[0053] The rotating member 5 is provided with a first rotating groove 53 for avoiding the rotation of the first rotating part 31 and a second rotating groove 54 for avoiding the rotation of the second rotating part 41. The first rotating part 31 is provided with a first limiting part 33 and a second locking part 34, and the second rotating part 41 is provided with a second limiting part 43 and a second locking part 44. The first rotating groove 53 is provided with a first limiting boss 55, and the second rotating groove 54 is provided with a second limiting boss 57. The limiting parts located on the rotating parts are also located in the corresponding rotating grooves, and rotate in the rotating grooves as the connecting member rotates relative to the rotating member 5. Under normal conditions, the first limiting boss 55 abuts against the first limiting part 33, and the second limiting boss 57 abuts against the second limiting part 43.

[0054] The rotating member 5 is provided with a first locking platform 56 at a position close to the first rotating groove 53, and the first locking platform 56 extends toward the first connecting member 3 to the edge of the rotating member 5. Similarly, the rotating member 5 is provided with a second locking platform 58 at a position close to the second rotating groove 54, and extends toward the second connecting member 4 to the edge of the rotating member 5. In the extended state, the first locking platform 56 abuts against the first locking portion 34, and the second locking platform 58 abuts against the second locking portion 44.

[0055] It can remain stable after state switching, especially in the normal state, after the limit part abuts against the limit boss, it can prevent the movable supporting member 22 from shaking on the basic supporting member 21; this solution achieves limitation through a simpler structure, improves stability, does not need to set more components for limiting, facilitates assembly, and saves component costs.

[0056] More specifically, the rotating member 5 is a long strip-shaped component, and the mounting portion 52 is protruding at both ends. The two rotating parts can be arranged between the two mounting portions 52 to realize rotation, and the accommodating portion 51 can hide itself and the rotating part under normal conditions. The rotating part is cylindrical, and the rotating part is rotatably arranged in the corresponding rotating groove. The middle part of the rotating part is cut to form a limiting part and a locking part. The cutting here is not a real cutting, but means that the rotating part is not a complete cylinder, and an irregular shape with a limiting part and a locking part is formed. Therefore, the limiting part and the locking part are directly formed on the rotating part, and there is no need to set parts for limiting, which greatly reduces the number of parts, facilitates assembly and reduces costs. The thickness of the accommodating 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 more inclined to avoid the rotating part, so that the connecting part can smoothly rotate relative to the rotating member 5. The thickness of the accommodating portion 51 is thin, so that the overall consumables of the rotating member 5 can also be less, and the depth of the rotating groove is shallow to adapt to the accommodating portion 51. The first connecting member 3, the second connecting member 4 and the rotating member 5 are all metal members, and the three are integrally formed.

[0057] Furthermore, the angle between the locking portion and the limiting portion on the same connecting member is 90°, and the angle between the limiting boss and the locking platform on the same side of the rotating member 5 is 90°. Similarly, when switching between the normal state and the extended state, the rotation angle between the first connecting member 3 and the rotating member 5 is 90°, and the rotation angle between the second connecting member 4 and the rotating member 5 is 90°. That is, in the normal state, the angle between the first locking portion 34 and the first locking platform 56 is 90°, and in the extended state, the angle between the first limiting portion 33 and the first limiting boss 55 is 90°, that is, the rotation angle is 90°, ensuring that the movable supporting member 22 has a rotatable angle of 180°.

[0058] In this embodiment, it is necessary to ensure that in the normal state, the movable supporting member 22 and the basic supporting member 21 are superimposed on each other, and when switched to the extended state, the angle between the movable supporting member 22 and the basic supporting member 21 is 180°, and the basic supporting member 21 cannot rotate. The rotating member 5 is provided with a double shaft for hiding, so the rotating member 5 and the movable supporting member 22 can both rotate. In a single state switching, the rotating member 5 can rotate 90° relative to the basic supporting member 21, and the movable supporting member 22 can rotate 90° relative to the rotating member 5, which can ensure that the final rotation angle of the movable supporting member 22 is 180°. This is the significance of setting the above-mentioned angle.

[0059] More specifically, if Figure 6 , 7As shown in , 9, 14-18, the first rotating shaft 9 and the second rotating shaft 10 both include a damping sleeve 11 and a support shaft 12, the rotating member 5 is provided with mounting holes 59 of the same number as 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 plug holes 13 corresponding to the mounting holes 59, the mounting holes 59 and the plug holes 13 are provided with the damping sleeve 11, the support shaft 12 is inserted in the damping sleeve 11, and the damping sleeve 11 is configured to increase the rotational damping of the rotating member 5 and the first connecting member 3 and the second connecting member 4; a limiting groove 591 is also provided in the mounting hole 59, and a limiting convex strip 111 is provided on the damping sleeve 11, and the limiting convex strip 111 is arranged in the limiting groove 591, and there is a circumferential limit between the damping sleeve 11 and the rotating member 5 to prevent the two from rotating relative to each other. When the connecting member rotates relative to the rotating member 5, the damping sleeve 11 can play a role to increase the rotational damping.

[0060] The damping sleeve 11 is in the shape of a hollow column. The damping sleeve 11 is made of POM material. The damping sleeve 11 is elastic. The support shaft 12 is inserted into the damping sleeve 11 and squeezes the damping sleeve 11 outward. The damping sleeve 11 and the support shaft 12, the mounting hole 59, and the plug hole 13 are all interference fits, mainly to increase the friction between the damping sleeve 11 and the plug hole 13. Specifically, the end of the damping sleeve 11 located at the bottom of the plug hole 13 is separated to form at least two circumferentially distributed expansion parts 112, and there is a gap between the expansion parts 112 in the circumferential direction; this is done to facilitate the insertion of the damping sleeve 11 into the plug hole 13, and to facilitate expansion to achieve damping. In this embodiment, there are two expansion parts 112, and the width of the two expansion parts 112 is smaller than the diameter of the damping sleeve 11.

[0061] The damping sleeve 11 is used to increase the rotational damping of the connecting member and the rotating member 5 to realize the damping hovering function. Structurally, there is no need to set up multiple components for increasing damping, which is convenient for assembly and saves component costs. Functionally, a multi-purpose armrest with damping is added, which can remain in place when the movable supporting member 22 rotates to any position, preventing the movable supporting member 22 from suddenly turning over due to gravity, and also avoiding the occurrence of hand pinching. The support shaft 12 is a metal shaft, and its function is to increase the connection strength, maintain the relative positions among the movable supporting member 22, the connecting member, and the basic supporting member 21, and at the same time be used to open the damping sleeve 11 to increase friction.

[0062] Furthermore, if Figure 1 , 3As shown in , 6, 9, and 10, the movable supporting member 22 is rotatably arranged on the basic supporting member 21 through the state switching mechanism. In the normal state, the movable supporting member 22 is located above the basic supporting member 21, and the two are stacked together. At this time, the end surface of the movable supporting member 22 that is close to or close to the basic supporting member 21 is the component surface 7; in the extended state, both component surfaces 7 are exposed upward and form the widened supporting surface 62; the movable supporting member 22 located above does not need to avoid the support assembly 1, maintains the integrity of the movable supporting member 22, increases the area of ​​the widened supporting surface 62, and is more practical; anti-slip pads 8 are provided on both component surfaces 7, which can be used to increase the friction of the widened supporting surface 62, and the items will not slide or fall after being placed. In the extended state, the upper surface of the state switching mechanism exposed on the movable supporting member 22 and the basic supporting member 21 is a part of the widened supporting surface 62.

[0063] There are many forms of the existing support assembly 1. In order to make the implementation effect of this solution better, a movable support assembly 1 is used. The specific structure of the support assembly 1 is not repeated again; the support assembly 1 includes a rotating rod 101, a rotating seat 102 and a support frame 103. The support frame 103 is used to connect the seat. The rotating seat 102 is set on the support frame 103. One end of the rotating rod 101 is rotatably connected to the rotating seat 102, and the basic supporting member 21 is rotatably set on the other end of the rotating rod 101; in the extended state, the small table can also move in multiple dimensions like the armrest, and move to the position required by the user, which is more applicable; the support frame 103 includes a fixed support member 1031 and a lifting support member 1032, and the rotating seat 102 is set on the lifting support member 1032; such a changeable small table is more advantageous, more flexible, and has a better user experience even compared to the existing non-armrest converted small table. In addition, the supporting assembly 2 can also be set on the support assembly 1 in a tilting and rotating manner.

[0064] When the multipurpose armrest is used in a seat, armrests are provided on both sides of the seat and at least one of the armrests is the multipurpose armrest. When the multipurpose armrest is in a normal state, it is used to support the arms of a human body. When the multipurpose armrest is in an extended state, it can also be used as a small table to support items.

Claims

1. A multi-purpose armrest, characterized in that: include: A support assembly configured as the main support of the handrail; A support assembly, disposed on the support assembly, the support assembly being configured to support the arm; The supporting assembly includes a basic supporting member and at least one movable supporting member, and the basic supporting member is connected to the supporting assembly; A state switching mechanism is connected to the basic supporting member and the movable supporting member respectively; the state switching mechanism is configured to enable the movable supporting member to be movably connected to the basic supporting member and enable the armrest to switch between a normal state and an extended state; The armrest has a normal state and an extended state: In a normal state, the movable supporting member and the basic supporting member are distributed along the height direction, and the upper surface of the supporting component forms a normal supporting surface for supporting the arm; When switching from the normal state to the extended state, the movable supporting member moves to the side of the basic supporting member; In the extended state, the movable supporting member is located beside the basic supporting member and the long sides of the two are adjacent, and the movable supporting member and the upper surface of the basic supporting member together form a widened supporting surface that can support both the arm and the object; And in the extended state, the width of the armrest is greater than that in the normal state.

2. The multi-purpose armrest according to claim 1, characterized in that: The width of the armrest in the expanded state is not less than the sum of the short side lengths of the movable supporting member and the basic supporting member.

3. The multi-purpose armrest according to claim 1, characterized in that: The movable supporting member is rotatably arranged on the basic supporting member through a state switching mechanism. In the normal state, the movable supporting member is located above the basic supporting member. At this time, the end surface of the movable supporting member close to the basic supporting member is a component surface; in the extended state, both component surfaces are exposed upward and form the widened supporting surface.

4. The multi-purpose armrest according to claim 3, characterized in that: Anti-slip pads are provided on both component surfaces.

5. The multi-purpose armrest according to claim 1, characterized in that: The movable supporting member is rotatably arranged on the basic supporting member through a state switching mechanism. In a normal state, the movable supporting member is located below the basic supporting member.

6. The multi-purpose armrest according to claim 1, characterized in that: In the extended state, the state switching mechanism is exposed on the upper surfaces of the movable supporting member and the basic supporting member to widen a portion of the supporting surface.

7. The multi-purpose armrest according to claim 1, characterized in that: The state switching mechanism is a rotating mechanism, which includes a first connecting member, a second connecting member and a rotating member. The first connecting member is connected to the basic supporting member, the second connecting member is connected to the movable supporting member, the rotating member is rotationally connected to the first connecting member through at least one first rotating shaft, and the rotating member is rotationally connected to the second connecting member through at least one second rotating shaft.

8. The multi-purpose armrest according to claim 7, characterized in that: The basic supporting member is provided with a first notch, the movable supporting member is provided with a second notch, the first notch and the second notch form an accommodating space, and the rotating member is arranged in the accommodating space.

9. The multi-purpose armrest according to claim 7, characterized in that: The first connecting member is provided with a first limiting portion, the second connecting member is provided with a second limiting portion, and the rotating member is provided with a first rotation groove for avoiding the rotation of the first connecting member and a second rotation groove for avoiding the rotation of the second connecting member, the first limiting portion is located in the first rotation groove, and the second limiting portion is located in the second rotation groove, and the first and second limiting portions rotate in the corresponding rotation grooves as the connecting members in which they are located rotate relative to the rotating member; a first limiting boss is provided in the first rotation groove, and a second limiting boss is provided in the second rotation groove. Under normal conditions, the first limiting boss abuts against the first limiting portion, and the second limiting boss abuts against the second limiting portion; the first connecting member is also provided with a first locking portion, and the second connecting member is also provided with a second locking portion, a first locking platform is provided at a position of the rotating member close to the first rotation groove, and a second locking platform is provided at a position of the rotating member close to the second rotation groove, and in an extended state, the first locking platform abuts against the first locking portion, and the second locking platform abuts against the second locking portion.

10. The multi-purpose armrest according to claim 9, characterized in that: The included angle between the locking portion and the limiting portion on the same connecting member is 90°, and on the rotating member, the included angle between the limiting boss and the locking platform on the same side is 90°.

11. The multi-purpose armrest according to claim 9, characterized in that: The rotating member includes a receiving portion and two mounting portions, and two ends of the receiving portion are respectively connected to the two mounting portions; the first connecting member includes a first rotating portion, and the second connecting member includes a second rotating portion, and the first rotating portion and the second rotating portion are both located between the two mounting portions, and the first rotating portion and the mounting portion are rotationally connected via a first rotating shaft, and the second rotating portion and the mounting portion are rotationally connected via a second rotating shaft; the first limiting portion and the first locking portion are arranged on the first rotating portion, and the first rotating portion is rotationally arranged in the first rotating groove, and the second limiting portion and the second locking portion are arranged on the second rotating portion, and the second rotating portion is rotationally arranged in the second rotating groove.

12. The multi-purpose armrest according to claim 11, characterized in that: The first and second rotating parts are both cylindrical, and corresponding limiting parts and locking parts are cut and formed in the middle of the rotating parts.

13. The multi-purpose armrest according to claim 11, characterized in that: The thickness of the accommodating portion is smaller than the thickness of the mounting portion, and the depths of the first and second rotating grooves are smaller than the thicknesses of the first and second rotating portions.

14. The multi-purpose armrest according to claim 7, characterized in that: When switching between the normal state and the extended state, the rotation angle between the first connecting member and the rotating member is 90°, and the rotation angle between the second connecting member and the rotating member is 90°.

15. The multi-purpose armrest according to claim 7, characterized in that: The first rotating shaft and the second rotating shaft both include a damping sleeve and a support shaft. The rotating member is provided with mounting holes having the same number as the first rotating shaft and the second rotating shaft. The first connecting member and the second connecting member are provided with plug holes corresponding to the mounting holes. The damping sleeve is provided in the mounting hole and the plug hole. The support shaft is inserted in the damping sleeve. The damping sleeve is configured to increase the rotational damping of the rotating member and the first connecting member and the second connecting member.

16. The multi-purpose armrest according to claim 15, characterized in that: The damping sleeve is elastic, the supporting shaft is inserted in the damping sleeve and presses the damping sleeve outwards, and the damping sleeve, the supporting shaft, the mounting hole and the inserting hole are all interference fit.

17. The multi-purpose armrest according to claim 15, characterized in that: A limiting groove is also arranged in the mounting hole, and a limiting convex strip is arranged on the damping sleeve, and the limiting convex strip is arranged in the limiting groove.

18. The multi-purpose armrest according to claim 15, characterized in that: The end of the damping sleeve located at the bottom of the insertion hole is separated to form at least two expanded parts distributed along the circumferential direction, and there is a gap between the expanded parts in the circumferential direction.

19. The multi-purpose armrest according to claim 15, characterized in that: The damping sleeve is in the shape of a hollow column and is made of POM material.

20. The multi-purpose armrest according to claim 7, characterized in that: The first rotating shaft and the second rotating shaft are arranged at intervals along the width direction of the rotating member, and the first rotating shaft and the second rotating shaft are parallel to each other; in a normal state, the rotating member is vertical, and in an extended state, the rotating member is horizontal.

21. The multi-purpose armrest according to claim 7, characterized in that: Along the length direction of the rotating member, a group of first rotating shaft and a group of second rotating shaft are respectively arranged at the two ends of the rotating member.

22. The multi-purpose armrest according to claim 7, characterized in that: The first connecting member is fixedly connected to the basic supporting member by means of screws, and the second connecting member is fixedly connected to the movable supporting member by means of screws.

23. The multi-purpose armrest according to claim 1, characterized in that: The support assembly includes a rotating rod, a rotating seat and a supporting frame. The supporting frame is used to connect the seat. The rotating seat is arranged on the supporting frame. One end of the rotating rod is rotatably connected to the rotating seat. The basic supporting member is rotatably arranged on the other end of the rotating rod.

24. The multi-purpose armrest according to claim 23, characterized in that: The support frame comprises a fixed support member and a lifting support member, and the rotating seat is arranged on the lifting support member.

25. An application of the multi-purpose handrail according to any one of claims 1 to 24, characterized in that: Armrests are arranged on both sides of the seat and at least one of the armrests is the multi-purpose armrest. When the multi-purpose armrest is in a normal state, it is used to support the arms of the human body. When the multi-purpose armrest is in an extended state, it can also be used as a table top to support objects.

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