Multi-joint armrest for seat and seat

Abstract

The multi-joint armrest comprises an armrest body, a mounting plate, a swing part, a first connecting mechanism and a second connecting mechanism, the swing part is connected with the mounting plate through the first connecting mechanism, and the swing part can be kept stable relative to the mounting plate in a first locking state; the swing rod can swing around a first set axis relative to the mounting plate in a first unlocking state; the armrest body is connected with the swing part through a second connecting mechanism, and the armrest body can keep stable relative to the swing part in a second locking state and can swing around a second set axis relative to the swing part in a second unlocking state; the first set axis and the second set axis extend in the height direction of the seat. The position of the armrest body in the width direction relative to the seat frame of the seat can be adjusted through the swing action of the armrest body relative to the swing part and the swing action of the swing part relative to the mounting plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, specifically to a multi-joint handrail for seat and seat. BACKGROUND

[0002] The handrail of the seat can provide support for the arm of the user, and can reduce the arm fatigue of the user. For users of different heights and body shapes, the appropriate position of the handrail is different, therefore, the handrails of part of the seats in the related art have a position adjusting function. At present, the position adjusting function of such handrails is generally to adjust the height position of the handrail relative to the seat frame, but for users of different body shapes, it is also desired to be able to adjust the position of the handrail along the width direction of the seat. SUMMARY

[0003] The utility model discloses a multi-joint handrail for seat and seat, which can adjust the position of the handrail body along the width direction of the seat.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] The multi-joint handrail for seat comprises a handrail body and a mounting plate for mounting with a seat frame of a seat, further comprises a swing piece, a first connecting mechanism and a second connecting mechanism, one end of the swing piece is connected with the mounting plate through the first connecting mechanism and has a first locking state and a first unlocking state relative to the mounting plate, the swing piece is configured to be able to remain stable relative to the mounting plate in the first locking state, and to be able to swing relative to the mounting plate about a first specified axis in the first unlocking state;

[0006] The handrail body is connected with the other end of the swing piece through the second connecting mechanism and has a second locking state and a second unlocking state relative to the swing piece, the handrail body is configured to be able to remain stable relative to the swing piece in the second locking state, and to be able to swing relative to the swing piece about a second specified axis in the second unlocking state;

[0007] The first specified axis and the second specified axis are spaced from each other and both extend along the height direction of the seat.

[0008] Preferably, the first connecting mechanism comprises:

[0009] A first connecting arm is arranged on the mounting plate;

[0010] A connecting member is arranged at one end of the swing piece; and

[0011] A spring bead is arranged between the first connecting arm and the connecting member;

[0012] One of the first connecting arm and the connecting member is formed with a rotating shaft, and the other is formed with a rotating hole matched with the rotating shaft, and the first connecting arm and the connecting member are rotationally connected through the rotating shaft inserted into the rotating hole;

[0013] One of the first connecting arm and the connecting member is formed with a plurality of positioning grooves distributed around the rotating shaft, and the other is formed with a mounting groove, the sleeve of the elastic bead is positioned in the mounting groove, the positioning grooves are in the shape of a spherical segment, the bead of the elastic bead is clamped in the positioning groove when the swing piece is in the first locking state, and the bead of the elastic bead is out of the positioning groove when the swing piece is in the first unlocking state.

[0014] Preferably, the swing piece is formed with a first abutting surface, the first connecting arm is formed with a second abutting surface, the first abutting surface and the second abutting surface are rotationally connected and form a cavity therebetween, and the connecting member and the elastic bead are arranged in the cavity.

[0015] Preferably, the connecting member includes a circular base plate, a connecting block formed on one side of the circular base plate, and the rotating shaft formed on the other side of the circular base plate.

[0016] The cavity includes a first recessed cavity formed on the first abutting surface and a second recessed cavity formed on the second abutting surface, the connecting block is inserted into the first recessed cavity and is key-connected therewith.

[0017] The second recessed cavity includes a circular cavity and a rotating hole formed on the bottom wall of the circular cavity, the circular base plate is rotationally arranged in the circular cavity, and the rotating shaft is rotationally inserted into the rotating hole.

[0018] Preferably, the elastic bead is arranged in two groups, the bottom wall of the second recessed cavity is formed with two mounting blocks, the mounting groove is formed on the mounting block, and the positioning groove is formed on the side of the circular base plate facing the mounting block.

[0019] The circular base plate is further formed with a limiting block extending into the two groups of mounting blocks, and the limiting block is used to limit the swing stroke of the connecting member relative to the first connecting arm.

[0020] Preferably, the second connecting mechanism includes:

[0021] A second connecting arm arranged on the other end of the swing piece;

[0022] A positioning disc positioned on the second connecting arm; and,

[0023] A connecting frame arranged on the handrail body and formed with a connecting groove.

[0024] The positioning disc is arranged in the connecting groove, and the connecting frame is configured to be kept stable relative to the positioning disc when the handrail body is in the second locked state and is capable of rotating relative to the positioning disc when the handrail body is in the second unlocked state.

[0025] Preferably, the positioning disc is provided with a first sliding groove extending in a radial direction thereof, inner walls of the connecting groove are formed with a plurality of first tooth grooves distributed in a circumferential direction, the second connecting mechanism further comprises a first elastic member arranged in the first sliding groove and a first clamping block arranged between the first elastic member and the first tooth grooves, the first clamping block is formed with a first engagement portion for engaging with the first tooth grooves, and the first elastic member exerts pressure on the first clamping block so that the first engagement portion has a tendency to be clamped into the first tooth grooves.

[0026] Preferably, the handrail body comprises a bottom shell formed with a receiving cavity, a bottom wall of the bottom shell is provided with a through hole, the second connecting arm is formed with a positioning protrusion, the connecting frame and the positioning disc are arranged in the receiving cavity, the positioning protrusion passes through the connecting frame and the positioning disc and extends into the receiving cavity through the through hole, and the positioning disc is in key cooperation with the positioning protrusion, and the connecting frame is in rotational cooperation with the positioning protrusion.

[0027] Preferably, the through hole extends along a length direction of the handrail body, the connecting frame is formed with a second sliding groove extending along a width direction of the handrail body, inner walls of the receiving cavity are formed with a plurality of second tooth grooves distributed along the length direction of the handrail body, and the multi-joint handrail further comprises a second elastic member arranged in the second sliding groove and a second clamping block arranged between the second elastic member and the second tooth grooves, the second clamping block is formed with a second engagement portion, and the second elastic member exerts pressure on the second clamping block so that the second engagement portion has a tendency to be clamped into the second tooth grooves.

[0028] In addition, the utility model discloses a multi-joint handrail for a seat, which comprises a handrail body and a mounting plate.

[0029] The seat comprises the multi-joint handrail according to any one of the technical solutions.

[0030] Compared with the prior art, the utility model has the beneficial effects that:

[0031] By arranging the swing member, the first connecting mechanism and the second connecting mechanism between the handrail body and the mounting plate, the position of the handrail body relative to the seat frame of the seat in the width direction of the seat can be adjusted through the swinging action of the handrail body relative to the swing member and the swinging action of the swing member relative to the mounting plate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1A structural schematic view of a multi-joint armrest for a seat is provided in the embodiments of the present application;

[0033] Figure 2 An exploded view of the swing member and the first connecting mechanism;

[0034] Figure 3 Another view of the exploded view in Figure 2

[0035] Figure 4 An exploded view of the armrest body and the second connecting mechanism;

[0036] Figure 5 A sectional view of the armrest body and the second connecting mechanism.

[0037] 1, armrest body; 10, bottom shell; 100, through hole; 101, second sliding groove; 11, upper cover; 2, mounting plate; 3, swing member; 30, first abutting surface; 31, first recessed cavity; 4, first connecting mechanism; 40, first connecting arm; 400, second abutting surface; 401, second recessed cavity; 402, mounting block; 4020, mounting groove; 41, connecting member; 410, circular base plate; 4100, positioning groove; 411, connecting block; 412, rotating shaft; 413, limiting block; 42, elastic glass beads; 5, second connecting mechanism; 50, second connecting arm; 500, positioning protrusion; 51, positioning disc; 510, first sliding groove; 52, connecting frame; 520, connecting groove; 521, first tooth groove; 522, second tooth groove; 53, first elastic member; 54, first clamping block; 540, first engagement part; 6, second elastic member; 7, second clamping block; 70, second engagement part. DETAILED DESCRIPTION

[0038] The present application will be further described below in conjunction with the drawings and the specific embodiments. It should be noted that the embodiments described below or the technical features thereof can be combined in any manner to form new embodiments. Except for the special description, the materials and devices used in the embodiments can be purchased from the market. The examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation to the present application.

[0039] ​In the description of the application, it needs to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically specified and limited.

[0040] In the description of the application, it needs to be understood that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, it can be connected through an intermediate medium, it can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0041] The embodiment provides a multi-joint armrest for a seat, as shown in Figure 1 The multi-joint armrest includes an armrest body 1, a mounting plate 2, a swing piece 3, a first connecting mechanism 4 and a second connecting mechanism 5. The mounting plate 2 is used to be mounted with the seat frame of the seat. The specific mounting method can adopt the existing scheme, for example, the mounting plate 2 can be fixedly mounted on the seat frame through screws or buckle structures, or the mounting plate 2 can be rotatably mounted on the seat frame. Here, it will not be repeated, the mounting plate 2 in the embodiment is provided with a mounting hole, and a screw can be used to pass through the mounting hole and lock and fix the mounting plate 2 on the side of the seat frame.

[0042] One end of the swing piece 3 is connected with the mounting plate 2 through the first connecting mechanism 4 and has a first locking state and a first unlocking state relative to the mounting plate 2. The swing piece 3 is configured to be able to keep stable relative to the mounting plate 2 in the first locking state, and the swing piece 3 is further configured to be able to swing relative to the mounting plate 2 about a first specified axis in the first unlocking state. The armrest body 1 is connected with the other end of the swing piece 3 through the second connecting mechanism 5 and has a second locking state and a second unlocking state relative to the swing piece 3. The armrest body 1 is configured to be able to keep stable relative to the swing piece 3 in the second locking state, and the armrest body 1 is further configured to be able to swing relative to the swing piece 3 about a second specified axis in the second unlocking state. The first specified axis and the second specified axis are spaced from each other and both extend along the height direction of the seat.

[0043] The multi-joint armrest provided by the embodiment can adjust the position of the armrest body 1 relative to the seat frame of the seat along the width direction of the seat through the swinging action of the armrest body 1 relative to the swinging member 3 and the swinging action of the swinging member 3 relative to the mounting plate 2. Meanwhile, the position of the armrest body 1 relative to the seat frame of the seat along the front-back direction can also be adjusted to a certain extent. As shown in FIG. 9, Figure 1 In the embodiment, the height direction, the width direction and the front-back direction are based on the placement orientation of the seat to which the multi-joint armrest is applied. The height direction of the seat is the up-down direction shown in the figure. When a user sits on the seat, the visual direction of the user is the front direction, the side on which the back of the seat is located is the rear direction, and the left and right sides of the user are the left and right directions.

[0044] As shown in FIGS. 1, Figure 1 , Figure 2 and Figure 3 The first connecting mechanism 4 in the embodiment includes a first connecting arm 40, a connecting member 41 and a spring bead 42. The first connecting arm 40 is arranged on the mounting plate 2, the connecting member 41 is arranged at one end of the swinging member 3, and the spring bead 42 is arranged between the first connecting arm 40 and the connecting member 41. In the embodiment, a rotating hole is formed in the first connecting arm 40, a rotating shaft 412 is formed in the connecting member 41, and the first connecting arm 40 and the connecting member 41 are rotationally connected through the rotating shaft 412 inserted into the rotating hole. In addition, a mounting groove 4020 is formed in the first connecting arm 40, and a tube sleeve in the spring bead 42 is positioned in the mounting groove 4020. A plurality of positioning grooves 4100 distributed around the rotating shaft 412 are formed in the connecting member 41, the positioning grooves 4100 are in the shape of a spherical segment, the bead in the spring bead 42 is clamped into the positioning grooves 4100 when the swinging member 3 is in the first locking state, and the bead in the spring bead 42 is out of the positioning grooves 4100 when the swinging member 3 is in the first unlocking state.

[0045] The elastic bead 42 is a commercially available component, which generally comprises a sleeve, a compression spring arranged in the sleeve, and a bead arranged at the opening of the sleeve. The bead is generally spherical, and the inner diameter of the sleeve is slightly larger than the diameter of the bead so that the bead can slide or roll in the sleeve. The opening of the sleeve is narrowed so that the size of the opening of the sleeve is smaller than the diameter of the bead, and the bead can be limited to be pulled out of the sleeve. The compression spring presses the bead so that the bead has a tendency to move out of the sleeve, and without external force, the bead will be partially extended out of the sleeve. The positioning groove 4100 is in the shape of a spherical segment, and the positioning groove 4100 is arranged to be matched with the part of the bead extended out of the sleeve, so that the bead can be clamped in the positioning groove 4100 to keep the swing piece 3 relative to the first connecting arm 40. When the user applies a certain force to the swing piece 3 along the circumference of the first set axis from the outside, the arc surface between the bead and the inner wall of the positioning groove 4100 will transmit a part of the force to the compression spring, so as to compress the compression spring and make the bead retract into the sleeve, until the bead is pulled out of the positioning groove 4100. In the above process, the swing piece 3 slightly swings relative to the first connecting arm 40, until the adjacent positioning groove 4100 is aligned with the bead, and the bead is clamped into the positioning groove 4100 aligned with it under the action of the compression spring.

[0046] It should be noted that the "arrangement" in the "the first connecting arm 40 is arranged on the mounting plate 2" can be fixed mounting or movable mounting. For example, in the embodiment, the first connecting arm 40 is designed to be able to rotate relative to the mounting plate 2 around the first predetermined axis, and the first predetermined axis extends along the width direction of the seat, that is, the first predetermined axis is perpendicular to the first set axis.

[0047] The swing member 3 in the embodiment is formed with a first connecting surface 30, the first connecting arm 40 is formed with a second connecting surface 400, the first connecting surface 30 and the second connecting surface 400 are rotationally matched and a cavity is formed between the two, and the connecting member 41 and the elastic glass bead 42 are both arranged in the cavity. The connecting member 41 and the elastic glass bead 42 are hiddenly arranged in the cavity, which can improve the product appearance. Further, the connecting member 41 in the embodiment comprises a circular base plate 410, a connecting block 411 formed on one side of the circular base plate 410, and a rotating shaft 412 formed on the other side of the circular base plate 410. The cavity comprises a first recessed cavity 31 formed on the first connecting surface 30 and a second recessed cavity 401 formed on the second connecting surface 400, the connecting block 411 is inserted into the first recessed cavity 31 and the two are key matched. The second recessed cavity 401 comprises a circular cavity and the aforementioned rotating hole, the rotating hole is formed on the bottom wall of the circular cavity, the circular base plate 410 is rotationally arranged in the circular cavity, and the rotating shaft 412 is rotationally inserted into the rotating hole. Through the above design, on the one hand, the hidden arrangement of the connecting member 41 and the elastic glass bead 42 is realized, and on the other hand, in addition to the rotation matching of the rotating shaft 412 and the rotating hole, the rotation matching of the circular base plate 410 and the circular cavity is further formed, which can improve the rotation stability of the swing member 3 relative to the first connecting arm 40.

[0048] Further, the elastic glass bead 42 in the embodiment is provided with two groups, the bottom wall of the second recessed cavity 401 is formed with two mounting blocks 402, a mounting groove 4020 is formed on the mounting block 402, and a positioning groove 4100 is formed on the side of the circular base plate 410 facing the mounting block 402. The arrangement of the two groups of elastic glass beads 42 can improve the stability of the swing member 3 relative to the first connecting arm 40 when the swing member 3 is in the first locking state. At the same time, the circular base plate 410 in the embodiment is further formed with a limiting block 413 extending between the two mounting blocks 402, and the limiting block 413 is used to limit the swing stroke of the connecting member 41 relative to the first connecting arm 40. It is easy to understand that it is not necessary for the swing member 3 to rotate a full circle, and excessive rotation amplitude will also interfere with the user's body sitting on the seat. Therefore, the number of positioning grooves 4100 does not need to be too much. At the same time, the limiting block 413 can be used to limit the excessive rotation of the swing member 3, so as to avoid the swing member 3 from hitting the user's body.

[0049] The embodiment shows a preferred scheme of the first connecting mechanism 4, and through the above description, it can be known that the first connecting mechanism 4 can be self-unlocked, the user does not need to operate with both hands, and only needs to pull the swing member 3 with one hand to drive the swing member 3 to swing relative to the mounting plate 2, which is simple and convenient to operate.

[0050] In combination Figure 1 , Figure 4 and Figure 5As shown in the figures, the second connecting mechanism 5 in the embodiment comprises a second connecting arm 50, a positioning disc 51 and a connecting frame 52. The second connecting arm 50 is arranged at the other end of the swing member 3, the positioning disc 51 is arranged on the second connecting arm 50, and the connecting frame 52 is arranged on the armrest body 1. The connecting frame 52 is formed with a connecting groove 520, the positioning disc 51 is arranged in the connecting groove 520, and the connecting frame 52 is configured to be stable relative to the positioning disc 51 when the armrest body 1 is in the second locked state and to be able to rotate relative to the positioning disc 51 when the armrest body 1 is in the second unlocked state.

[0051] It should be noted that the "arranged" in the "arranged at the other end of the swing member 3" of the second connecting arm 50 can be fixedly mounted or movably mounted. For example, in the embodiment, the second connecting arm 50 is designed to be able to rotate relative to the swing member 3 about a second predetermined axis, and the second predetermined axis extends along the width direction of the seat, that is, the second predetermined axis is perpendicular to the second predetermined axis.

[0052] Specifically, the positioning disc 51 is provided with a first sliding groove 510 extending in the radial direction thereof, the inner wall of the connecting groove 520 is formed with a plurality of first tooth grooves 521 distributed in the circumferential direction, the second connecting mechanism 5 further comprises a first elastic member 53 arranged in the first sliding groove 510 and a first clamping block 54 arranged between the first elastic member 53 and the first tooth groove 521. The first clamping block 54 is formed with a first engagement portion 540 for engaging with the first tooth groove 521, and the first elastic member 53 presses the first clamping block 54 so that the first engagement portion 540 has a tendency to be clamped into the first tooth groove 521. The engagement in the embodiment refers to the action that the first engagement portion 540 on the first clamping block 54 can be clamped into and released from the first tooth groove 521 under the cooperation of external force and the first elastic member 53. It can be understood that in the above engagement, when the first engagement portion 540 is clamped into the first tooth groove 521, the armrest body 1 is in the second locked state relative to the swing member 3; when the first engagement portion 540 is released from the first tooth groove 521, the armrest body 1 is in the second unlocked state relative to the swing member 3. Since the first tooth groove 521 in the embodiment is distributed along the inner wall of the connecting groove 520 in the circumferential direction, the armrest body 1 is switched between the second locked state and the second unlocked state during the rotation of the armrest body 1 relative to the swing member 3.

[0053] Further, the handrail body 1 in the embodiment further comprises a bottom shell 10 forming a receiving cavity, and the connecting frame 52 and the positioning disc 51 are arranged in the receiving cavity. The bottom wall of the bottom shell 10 is provided with a through hole 100, the second connecting arm 50 is formed with a positioning protrusion 500, the positioning protrusion 500 passes through the connecting frame 52 and the positioning disc 51 and extends into the receiving cavity through the through hole 100, and the positioning disc 51 is in key cooperation with the positioning protrusion 500, and the connecting frame 52 is in rotation cooperation with the positioning protrusion 500. Through the above design, the positioning disc 51 is fixed relative to the swing piece 3, and the handrail body 1 and the connecting frame 52 can rotate relative to the swing piece 3 and the positioning disc 51. In the embodiment, a connecting hole is further arranged on the positioning disc 51 and the positioning protrusion 500, the connecting hole can be a round hole or a threaded hole, and the positioning disc 51 can be fixedly installed on the positioning protrusion 500 by inserting a cotter pin into the round hole or screwing a bolt into the threaded hole.

[0054] It is easy to understand that the handrail body 1 in the embodiment further comprises an upper cover 11 which is detachably fixedly installed on the bottom shell 10, so as to facilitate assembly operation. The positioning disc 51 and the connecting frame 52 and the like are assembled into the receiving cavity first, and then the upper cover 11 is fixedly installed on the bottom shell 10, and the upper cover 11 plays a role of closing the receiving cavity.

[0055] The embodiment shows a preferred scheme of the second connecting mechanism 5, and as known from the above description, the second connecting mechanism 5 can be self-unlocked, and the user does not need to operate with both hands, but only needs to pull the handrail body 1 with one hand to drive the handrail body 1 to swing relative to the swing piece 3, and the operation is simple and convenient.

[0056] It should be noted that generally, the user is used to arranging the handrail body 1 so that the length direction of the handrail body 1 is consistent with the front-rear direction of the seat. When the swing piece 3 is swung to adjust the position of the handrail body 1 along the width direction of the seat, the length direction of the handrail body 1 will form an angle with the front-rear direction of the seat. At this time, the handrail body 1 can be adjusted to keep the length direction consistent with the front-rear direction of the seat by swinging the handrail body 1 itself relative to the swing piece 3. Of course, if the user has other use habits, the length direction of the handrail body 1 can also be made to form an angle with the front-rear direction of the seat by swinging the handrail body 1 and / or the swing piece 3.

[0057] In addition, when the position of the handrail body 1 is adjusted by the swinging action of the handrail body 1 and the swing piece 3, not only the position of the handrail body 1 relative to the seat frame along the width direction (left-right direction) of the seat will be changed, but also the position of the handrail body 1 relative to the seat frame along the front-rear direction of the seat will be changed. Therefore, the handrail body 1 in the embodiment is designed so that the handrail body 1 can slide relative to the swing piece 3 along the front-rear direction, so as to accurately adjust the position of the handrail body 1 relative to the seat frame along the front-rear direction.

[0058] Specifically, the through hole 100 in the embodiment extends along the length direction of the armrest body 1, the connecting frame 52 is formed with a second sliding groove 101 extending along the width direction of the armrest body 1, and the inner wall of the cavity is formed with a plurality of second tooth grooves 522 distributed along the length direction of the armrest body 1. The multi-joint armrest further comprises a second elastic member 6 arranged in the second sliding groove 101 and a second clamping block 7 arranged between the second elastic member 6 and the second tooth groove 522, the second clamping block 7 is formed with a second engaging portion 70, and the second elastic member 6 is pressed on the first clamping block 54 so that the second engaging portion 70 has a tendency to be clamped into the second tooth groove 522. The cooperation principle of the second elastic member 6, the second clamping block 7 and the second tooth groove 522 is consistent with the cooperation principle of the first elastic member 53, the first clamping block 54 and the first tooth groove 521 described above, which will not be repeated here. Therefore, the user can push the armrest body 1 forward or backward as needed, so that the armrest body 1 can slide relative to the swinging member 3.

[0059] The first elastic member 53 and the second elastic member 6 in the embodiment are both compression springs, and in other alternative embodiments, the first elastic member 53 and the second elastic member 6 can also use elastic bodies such as metal springs.

[0060] It should be further pointed out that the swing adjustment and the sliding adjustment of the armrest body 1 in the multi-joint armrest provided in the embodiment are both gear adjustment schemes, and a set of armrest bodies 1 is generally arranged on the left and right sides of the seat, and the adjustment process is designed as gear adjustment to facilitate the symmetrical adjustment operation of the armrest bodies 1 on the two sides, and the positions of the armrest bodies 1 on the two sides relative to the seat frame in the front-back direction and the left-right direction are easily adjusted to be the same.

[0061] The multi-joint armrest provided in the embodiment can be applied to a seat. Generally, the multi-joint armrest is installed on the seat frame of the seat.

[0062] Finally, it should be pointed out that the above-mentioned embodiments are only alternative embodiment modes of the present application, and cannot be used to limit the scope of protection of the present application, and any non-essential changes and substitutions made by those skilled in the art on the basis of the present application all belong to the scope of protection required by the present application.

Claims

1. A multi-articulated armrest for a seat, the multi-articulated armrest comprising an armrest body and a mounting plate for mounting with a seat frame of a seat, characterised in that, The multi-joint handrail further comprises a swing member, a first connecting mechanism and a second connecting mechanism, one end of the swing member is connected with the mounting plate through the first connecting mechanism and has a first locking state and a first unlocking state relative to the mounting plate, the swing member is configured to be able to keep stable relative to the mounting plate in the first locking state and to be able to swing relative to the mounting plate about a first set axis in the first unlocking state; The handrail body is connected with the other end of the swing member through the second connecting mechanism and has a second locking state and a second unlocking state relative to the swing member, the handrail body is configured to be able to keep stable relative to the swing member in the second locking state and to be able to swing relative to the swing member about a second set axis in the second unlocking state; The first set axis and the second set axis are spaced from each other and both extend along the height direction of the seat.

2. The multi-articulating handrail of claim 1, wherein, The first connecting mechanism comprises: a first connecting arm arranged on the mounting plate; a connecting member arranged at one end of the swing member; and a spring glass bead arranged between the first connecting arm and the connecting member; One of the first connecting arm and the connecting member is formed with a rotating shaft, and the other is formed with a rotating hole matched with the rotating shaft, and the first connecting arm and the connecting member are rotationally fitted by inserting the rotating shaft into the rotating hole; One of the first connecting arm and the connecting member is formed with a plurality of positioning grooves distributed around the rotating shaft in the circumferential direction, and the other is formed with a mounting groove, the sleeve of the spring glass bead is positioned in the mounting groove, the positioning grooves are in the shape of a spherical segment, the bead of the spring glass bead is clamped into the positioning groove when the swing member is in the first locking state, and the bead of the spring glass bead is out of the positioning groove when the swing member is in the first unlocking state.

3. The multi-articulating handrail of claim 2, wherein, The swing member is formed with a first abutting surface, the first connecting arm is formed with a second abutting surface, the first abutting surface and the second abutting surface are rotationally fitted and form a cavity therebetween, and the connecting member and the spring glass bead are arranged in the cavity.

4. The multi-articulating handrail of claim 3, wherein, The connecting member comprises a circular base plate, a connecting block formed on one side of the circular base plate, and the rotating shaft formed on the other side of the circular base plate; The cavity comprises a first recess formed on the first abutting surface and a second recess formed on the second abutting surface, the connecting block is inserted into the first recess and is key-fitted therewith, and the second recess comprises a circular cavity and a rotating hole formed on the bottom wall of the circular cavity, the circular base plate is rotationally arranged in the circular cavity, and the rotating shaft is rotationally inserted into the rotating hole. The spring glass bead is arranged in two groups, the bottom wall of the second recess is formed with two mounting blocks, the mounting groove is formed on the mounting block, and the positioning groove is formed on the side of the circular base plate facing the mounting block; 5. The multi-articulating handrail of claim 4, wherein, The circular base plate is further formed with a limiting block extending into the two groups of mounting blocks, and the limiting block is used to limit the swing stroke of the connecting member relative to the first connecting arm. The second connecting mechanism comprises:

6. The multi-articulating handrail of claim 3, wherein, a second connecting arm arranged at the other end of the swing member; a positioning disc positioned on the second connecting arm; and ​ A connecting frame is arranged on the handrail body and forms a connecting groove; The positioning disc is arranged in the connecting groove, and the connecting frame is configured to be stable relative to the positioning disc when the handrail body is in the second locked state and rotatable relative to the positioning disc when the handrail body is in the second unlocked state.

7. The multi-articulating handrail of claim 6, wherein, The positioning disc is provided with a first sliding groove extending in a radial direction thereof, and an inner wall of the connecting groove is formed with a plurality of first tooth grooves distributed in a circumferential direction; the second connecting mechanism further comprises a first elastic member arranged in the first sliding groove and a first clamping block arranged between the first elastic member and the first tooth grooves, the first clamping block is formed with a first engagement portion for engaging with the first tooth grooves, and the first elastic member exerts pressure on the first clamping block so that the first engagement portion has a tendency to be clamped into the first tooth grooves.

8. The multi-articulating handrail of claim 6, wherein, The handrail body comprises a bottom shell formed with a receiving cavity, a bottom wall of the bottom shell is provided with a through hole, the second connecting arm is formed with a positioning protrusion, the connecting frame and the positioning disc are arranged in the receiving cavity, the positioning protrusion passes through the connecting frame and the positioning disc and extends into the receiving cavity through the through hole, and the positioning disc is in key cooperation with the positioning protrusion, and the connecting frame is in rotational cooperation with the positioning protrusion.

9. The multi-articulating handrail of claim 8, wherein, The through hole extends along a length direction of the handrail body, the connecting frame is formed with a second sliding groove extending along a width direction of the handrail body, and an inner wall of the receiving cavity is formed with a plurality of second tooth grooves distributed along the length direction of the handrail body. The multi-joint handrail further comprises a second elastic member arranged in the second sliding groove and a second clamping block arranged between the second elastic member and the second tooth grooves, the second clamping block is formed with a second engagement portion, and the second elastic member exerts pressure on the second clamping block so that the second engagement portion has a tendency to be clamped into the second tooth grooves.

10. A seat, characterized by The multi-joint handrail comprises the multi-joint handrail according to any one of claims 1 to 9.

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