Handrail with multiple adjusting modes

Abstract

The utility model discloses a handrail with multiple adjusting modes, which comprises a supporting rod, a connecting seat and a supporting plate which are connected in sequence, the supporting rod comprises an inner cylinder and an outer cylinder sleeved outside the inner cylinder, and the inner cylinder and the outer cylinder can be connected in a relative sliding manner; the connecting seat is rotatably mounted on the outer cylinder; and / or the supporting plate is rotatably mounted on the connecting seat. Compared with the prior art, the armrest with the multiple adjusting modes has the advantages that the supporting plate can be adjusted to the needed angle and position when a user sits in different sitting postures or in different using environments, and the effect of improving the experience feeling of the user is achieved.

Description

Technical Field

[0001] The utility model relates to the field of chair armrests, in particular to an armrest with multiple adjustment modes. Background Art

[0002] Chairs are tools that people often use in their daily lives, and people will sit on them for a long time to do various things, so the comfort of the seats is very important; and the armrests of the seats are an important part of whether the seats are comfortable.

[0003] The existing chair armrests can adjust the front and rear positions and the up and down positions of the armrests respectively; however, since different users have different sitting habits and sitting scenes, the above adjustment range is difficult to meet the usage requirements of more users and has low applicability.

[0004] Therefore, based on the above problems, it is necessary to improve the existing armrests installed on the seats to solve the above problems. Utility Model Content

[0005] In view of the problems existing in the above-mentioned prior art, the utility model provides an armrest with multiple adjustment methods, which can adjust the angle of the armrest according to the user's usage requirements to improve the user's usage experience.

[0006] In order to solve the above technical problems, the technical solution of the utility model is:

[0007] An armrest with multiple adjustment modes, comprising: a supporting rod, a connecting seat and a supporting plate connected in sequence, wherein the supporting rod comprises an inner cylinder and an outer cylinder sleeved outside the inner cylinder, and the inner cylinder and the outer cylinder can be connected in a relatively sliding manner;

[0008] The connecting seat is rotatably mounted on the outer cylinder; and / or the supporting plate is rotatably mounted on the connecting seat.

[0009] Preferably, a bracket and a connecting shaft are provided on the outer cylinder, a first rolling groove is provided on the upper surface of the bracket, and a rolling element is provided in the first rolling groove;

[0010] The connecting shaft passes through the connecting seat and is connected to the bracket, and the connecting seat is rotatably connected to the outer side wall of the connecting shaft.

[0011] Preferably, the top surface of the connecting seat forms an arc surface, and there is a gap between the arc surface and the supporting plate.

[0012] Preferably, the outer cylinder is limited in relative position to the inner cylinder by a first limiting assembly, a locking plate is slidably installed in the inner cylinder, and the locking plate is connected to the outer cylinder; a mounting box is installed on the locking plate, a projection opening is provided on one side outside the mounting box, a first limiting assembly is installed in the mounting box, a plurality of locking grooves are provided at intervals along the length direction on the side wall of the inner cylinder, and the first limiting assembly passes through the locking plate through the projection opening and is snapped into the locking groove.

[0013] Preferably, the first limiting assembly includes a swing rod and a locking block, the swing rod is swingably installed in the installation box; one end of the locking block is connected to the end of the swing rod away from the rotating shaft, and the other end passes through the extension port to pass through the locking plate and is locked in the locking groove; the first limiting assembly also includes: a driving member for driving the swing rod to swing, the driving member includes a first elastic member, and the first elastic member is respectively connected to the swing rod and a side of the installation box away from the extension port.

[0014] Preferably, a first inclined surface is provided on an upward side of the locking block; the armrest further comprises: a reset member at the locking groove for driving the locking block to reset to an initial position; a first movable groove is provided on a side wall of the mounting box in the thickness direction of the locking plate and corresponding to the rotating shaft of the swinging lever, the first movable groove extends in a sliding direction of the locking plate, and an end portion of the rotating shaft of the swinging lever is slidably mounted on the mounting box through the first movable groove;

[0015] Preferably, the reset member comprises: a sliding rod parallel to the rotating shaft of the swing rod, the sliding rod is installed on the blocking block, the installation box is provided with a second moving groove at a side wall of the first moving groove and at a position corresponding to the sliding rod, and the end of the sliding rod is slidingly installed on the installation box through the second moving groove; the installation box is provided with an avoidance groove at a top position corresponding to the second moving groove, and when the sliding rod is inserted into the avoidance groove, the blocking block is connected to the blocking groove;

[0016] The side wall of the inner cylinder is provided with a driving groove extending in the sliding direction of the locking plate, and one end of the sliding rod extends out of the locking plate and is slidingly installed on the inner cylinder through the driving groove; when the locking plate slides upward until the locking block leaves the locking groove at the top, the end wall of the driving groove pushes the sliding rod to be locked into the bottom of the second movable groove.

[0017] Preferably, the support plate is slidably and rotatably mounted on the connecting seat, and the connecting seat is equipped with a second limiting component for limiting the sliding position of the support plate and a third limiting component for limiting the rotational position of the support plate.

[0018] Preferably, the second limiting assembly comprises: a sliding seat and a locking member, the support plate is provided with a first sliding groove; the sliding seat is rotatably connected to the connecting seat, and the sliding seat is slidably mounted on the support plate through the first sliding groove; the locking member is used to limit the sliding position of the sliding seat;

[0019] The locking member comprises: a locking block and a second elastic member, a side wall of the sliding seat is provided with a mounting groove, and the locking block is slidably mounted on the sliding seat through the mounting groove; the second elastic member is mounted on the locking block and the groove bottom of the mounting groove; the support plate is provided with a plurality of slots arranged at intervals in the sliding direction of the sliding seat at a position corresponding to the groove wall of the first sliding groove and corresponding to the locking block, an end of the locking block away from the second elastic member extends out of the mounting groove and is clamped in the clamping groove, and a curved surface is provided on a side of the locking block close to the clamping groove;

[0020] Preferably, the third limiting assembly includes: a locking disk and at least one clamping block, wherein the locking disk is sleeved on the connecting seat and rotatably installed on the rotating shaft of the sliding seat, and the locking disk is provided with a plurality of second locking grooves spaced apart along the circumferential direction; the clamping block is an elastic block, which is installed on the sliding seat, and the clamping block is clamped to the locking disk through the second locking groove.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The angle of the armrest is adjusted according to the user's needs to improve the user experience and enhance the overall comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an armrest with multiple adjustment methods in the present application.

[0024] Figure 2 This is a sectional view of the overall structure of an armrest with multiple adjustment methods according to the present application.

[0025] Figure 3 It is a schematic diagram of the internal structure of a connecting seat in an armrest with multiple adjustment methods in the present application.

[0026] Figure 4 It is a bottom view of a connecting seat and a supporting plate in an armrest with multiple adjustment methods in the present application.

[0027] Figure 5 It is a structural schematic diagram of a support rod and a bracket in an armrest with multiple adjustment methods in the present application.

[0028] Figure 6 This is a schematic diagram of the use of a first limit assembly of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0029] Figure 7 This is a schematic diagram of the installation of the first limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0030] Figure 8 It is a schematic diagram of a support rod resetting structure of an armrest with multiple adjustment methods according to an embodiment of the present application.

[0031] Fig. 9 It is a structural schematic diagram of an embodiment of the present application in which a mounting box of an armrest with multiple adjustment methods is installed on a locking plate.

[0032] Fig.10 It is a schematic diagram of the installation structure of the second limit assembly and the third limit assembly of an armrest with multiple adjustment methods in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 1. Support rod; 11. Inner cylinder; 111. Clamping slot; 112. Driving slot; 12. Outer cylinder; 13. Mounting cylinder; 14. Locking plate; 141. Side slot; 142. Mounting box; 1421. First moving slot; 1422. Second moving slot; 1423. Avoiding slot; 2. Support plate; 21. First sliding slot; 22. Clamping slot; 3. Connecting seat; 31. Arc surface; 32. Rotating shaft; 4. Support seat; 41. First rolling slot; 5. First limiting slot Positioning assembly; 51, swing rod; 52, blocking block; 521, first inclined surface; 53, driving member; 531, first elastic member; 54, reset member; 541, sliding rod; 6, connecting shaft 7, rolling member; 8, second limiting assembly; 81, sliding seat; 82, locking member; 821, locking block; 8211, arc surface; 822, second elastic member; 9, third limiting assembly; 91, locking disk; 911, second locking groove; 92, blocking block. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-10 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0036] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection and the like commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0038] The following is combined with Figure 1-10 This application is described in further detail.

[0039] The present application embodiment discloses an armrest with multiple adjustment methods. Figure 1-Figure 5 The armrest includes a support rod 1, a connecting seat 3 and a support plate 2 which are connected in sequence. The top surface of the connecting seat 3 forms an arc surface 31, which is in a "︶" shape. The arc surface 31 is concave toward the direction of the support rod 1, and there is a gap between the arc surface 31 and the support plate 2. The support rod 1 includes an inner tube 11 and an outer tube 12 sleeved outside the inner tube 11. Specifically, the inner tube 11 and the outer tube 12 are both hollow straight tubes. The outer tube 12 is sleeved in the inner tube 11. A mounting tube 13 is sleeved between the outer tube 12 and the inner tube 11. The mounting tube 13 and the inner tube 11 are buckled and connected to each other. The bottom end of the mounting tube 13 is used for detachable installation on the seat; the outer tube 12 and the mounting tube 13 are relatively slidably connected in the length direction, that is, the outer tube 12 and the inner tube 11 can be relatively slidably connected; the relative position between the outer tube 12 and the inner tube 11 is limited by the first limiting component 5.

[0040] The connecting seat 3 is rotatably mounted on the outer cylinder 12 ; the supporting plate 2 is rotatably mounted on the connecting seat 3 .

[0041] A bracket 4 and a connecting shaft 6 are provided on the outer cylinder 12, a first rolling groove 41 is provided on the upper surface of the bracket 4, and a rolling element 7 is provided in the first rolling groove 41; the connecting shaft 6 passes through the connecting seat 3 and is connected to the bracket 4, and the connecting seat 3 is rotatably connected to the outer side wall of the connecting shaft 6; by providing the connecting shaft 6, the connecting seat 3 can be freely rotated 360° horizontally relative to the support rod 1, and by providing the rolling element 7 on the upper surface of the bracket 4, the rotation resistance of the connecting seat 3 can be reduced.

[0042] The support plate 2 is mounted on the connection seat 3, and the connection seat 3 is rotatably mounted on the outer cylinder 12. Specifically, the connection seat 3 is rotatably mounted on the top of the outer cylinder 12. The support plate 2 is slidably and rotatably mounted on the connection seat 3, that is, one end of the support plate 2 is slidably and rotatably mounted on the connection seat 3, and there is a gap between the other end and the curved surface 31, wherein the sliding direction of the support plate 2 is the front and rear position of the armrest installed behind the seat, and the connection seat 4 is installed with a second limit assembly 8 for limiting the sliding position of the support plate 2 and a third limit assembly 9 for limiting the rotation position of the support plate 2.

[0043] The above can achieve corresponding adjustments in the free combination of the position of the support plate 2 in the adjustment range when adjusting the relative position between the outer cylinder 12 and the inner cylinder 11, adjusting the horizontal angle position of the support plate 2, adjusting the front and rear position of the support plate 2, and adjusting the support plate 2 to be different from the rotating connecting seat 3, so as to adjust to the required angle and position according to the user's sitting posture and usage environment, and achieve the best usage experience.

[0044] Reference Figure 2 A locking plate 14 is slidably installed in the inner cylinder 11, and the locking plate 14 extends in the length direction of the inner cylinder 11, and the locking plate 14 is connected to the outer cylinder 12; the locking plate 14 is inserted into the inner cylinder 11, and the locking plate 14 is slidably installed in the inner cylinder 11; a connecting shaft 6 is rotatably installed in the middle position of one side of the connecting seat 3 close to the support rod 1, and the connecting shaft 6 is detachably installed on the locking plate 14 by bolts; a bracket 4 is fixedly installed at one end of the outer cylinder 12 close to the connecting seat 3, and the connecting shaft 6 is penetrated through the inner ring of the bracket 4, and the bracket 4 is clamped between the connecting seat 3 and the locking plate 14 to complete the mutual locking between the connecting seat 3, the outer cylinder 12 and the locking plate 14, so that when the locking plate 14 is in the sliding process, it can drive the outer cylinder 12 to slide together.

[0045] Reference Figure 6 and Figure 7 The bottom side wall of the locking plate 14 is provided with a side groove 141, and the locking plate 14 is installed with an installation box 142. Specifically, the locking plate 14 is located at the side groove 141 and the installation box 142 is detachably installed by bolts. The first limiting component 5 passes through the locking plate 14 through the extension port and is clamped in the clamping groove 111. The first limiting component 5 includes a swing rod 51, a clamping block 52 and a driving member 53 for driving the swing rod 51 to swing. The swing rod 51 is swingably installed in the installation box 142; a protrusion port is provided on one side of the side groove 141 outside the installation box 142, and the protrusion port is connected to the installation box 142. The first limiting component 5 is installed in the installation box 142; the side wall of the inner cylinder 11 is along the length A plurality of latching grooves 111 are provided at intervals in the degree direction, specifically, a plurality of latching grooves 111 are provided on the side wall of the inner cylinder 11 and at positions corresponding to the extension openings, and the plurality of latching grooves 111 are arranged at equal intervals in the length direction of the side wall of the inner cylinder 11; one end of the latching block 52 is connected to the end of the swing rod 51 away from the rotating shaft, and the other end passes through the extension opening to pass through the locking plate 14 and is engaged with the latching groove 111, that is, one end of the latching block 52 is integrally formed with the end of the swing rod 51 away from the rotating shaft, and the other end passes through the extension opening to pass through the installation box 142 and is engaged with a corresponding one of the latching grooves 111; the driving member 53 is used to drive the swing rod 51 to swing, so as to lock and unlock the locking plate 14.

[0046] The driving member 53 includes a first elastic member 531. In the present embodiment, the first elastic member 531 is a spring. The first elastic member 531 is respectively connected to the swing rod 51 and the side of the installation box 142 away from the extension port, that is, the two ends of the first elastic member 531 are respectively fixedly installed on the side of the swing rod 51 away from the extension port and the side of the installation box 142 away from the extension port; the upward side of the locking block 52 is provided with a first inclined surface 521; so that when the outer cylinder 12 is pulled, the locking block 52 can be retracted into the installation box 142 along with the swing rod 51 through the guiding effect of the first inclined surface 521, and the unlocking can be completed; the armrest also includes a reset member 54 at the locking groove 111 for driving the locking block 52 to reset to the initial position. In the embodiment, the initial position is the position when the locking block 52 is locked in a locking groove 111 located at the bottom.

[0047] Reference Figure 8 and Fig. 9 The mounting box 142 is provided with a first movable groove 1421 on the side wall in the thickness direction of the locking plate 14 and corresponding to the rotating shaft of the swing rod 51, that is, the mounting box 142 is provided with a first movable groove 1421 on both sides in the thickness direction of the locking plate 14 and corresponding to the rotating shaft of the swing rod 51, the first movable groove 1421 extends in the sliding direction of the locking plate 14, the first movable groove 1421 is connected to the outside of the mounting box 142, and the rotating shaft end of the swing rod 51 is slidably installed on the mounting box 142 through the first movable groove 1421, that is, the two ends of the rotating shaft of the swing rod 51 are respectively slidably installed on the mounting box 142 through the two first movable grooves 1421, and the rotating shaft of the swing rod 51 is cylindrical; the reset member 54 includes a sliding rod 541, the sliding rod 541 is parallel to the rotating shaft of the swing rod 51, and the sliding rod 541 is installed on the clamping block 52 Specifically, the sliding rod 541 is penetrated by the locking block 52 and is integrally formed with the locking block 52, and the sliding rod 541 is cylindrical; the installation box 142 is provided with a second movable groove 1422 at the side wall of the first movable groove 1421 and at the two end positions corresponding to the sliding rod 541, and the second movable groove 1422 is connected to the outside of the installation box 142, and the end of the sliding rod 541 is slidingly installed on the installation box 142 through the second movable groove 1422, and the two ends of the sliding rod 541 are slidingly installed on the installation box 142 through the second movable groove 1422; the installation box 142 is provided with an avoidance groove 1423 at the top position corresponding to the second movable groove 1422, and the avoidance groove 1423 extends in a direction perpendicular to the second movable groove 1422. When the sliding rod 541 is inserted into the avoidance groove 1423, the locking block 52 is connected to the locking groove 111.

[0048] Reference Figure 8 and Fig. 9The side wall of the inner cylinder 11 is provided with a driving groove 112 extending in the sliding direction of the locking plate 14, that is, one side wall of the inner cylinder 11 adjacent to the locking groove 111 is provided with a driving groove 112, and the driving groove 112 extends in the sliding direction of the locking plate 14, and one end of the sliding rod 541 extends out of the locking plate 14 and is slidably installed on the inner cylinder 11 through the driving groove 112, that is, the end of the sliding rod 541 close to the driving groove 112 passes through the second The movable slot 1422 extends out of the locking plate 14, and one end of the sliding rod 541 extending out of the locking plate 14 is slidably installed on the inner cylinder 11 through the driving slot 112; when the locking plate 14 is in the initial position, one end of the sliding rod 541 extending out of the locking plate 14 abuts against the bottom slot wall of the driving slot 112; and when the locking plate 14 is in the extreme position, the locking block 52 is locked in a locking slot 111 at the top, and the locking plate is continuously pulled. 14, so that the locking block 52 leaves the topmost locking groove 111, at this time, one end of the sliding rod 541 extends out of the locking plate 14 and abuts against the top groove wall of the driving groove 112 until the sliding rod 541 is pushed into the second moving groove 1422, limiting the swinging rod 51 from swinging, so that the locking plate 14 can slide to the initial state, that is, the armrest is reset in the up and down adjustment direction; when the locking plate 14 slides upward until the locking block 52 leaves the topmost locking groove 111, the end wall of the driving groove 112 pushes the sliding rod 541 to snap into the bottom of the second moving groove 1422; when the locking block 52 moves to the position corresponding to the bottommost locking groove 111, the bottom groove wall of the driving groove 112 pushes the sliding rod 541 to slide again to the position corresponding to the avoiding groove 1423, so that the locking block 52 is snapped into the bottommost locking groove 111 again.

[0049] It should be noted that when the locking plate 14 slides upward, the swing rod 51 will not slide downward due to gravity due to the elastic force of the first elastic member 531 .

[0050] Reference Fig.10The second limiting assembly 8 includes a sliding seat 81 and a locking member 82, the locking member 82 is used to limit the sliding position of the sliding seat 81, a first sliding groove 21 is provided in the support plate 2, and the first sliding groove 21 extends in the sliding direction of the support plate 2; the sliding seat 81 is rotatably connected to the connecting seat 3, and the sliding seat 81 is slidably installed on the support plate 2 through the first sliding groove 21; the side wall of the sliding seat 81 is provided with a mounting groove 811, that is, the sliding seat 81 is provided with mounting grooves 811 on both sides of the sliding direction, and a locking member 82 is installed in each mounting groove 811, and the locking member 82 includes a locking block 821 and a second elastic member 822, and the locking block 821 is slidably installed on the sliding seat 81 through the mounting groove 811; in this embodiment, the second elastic member 8 22 is a spring, and the second elastic member 822 is installed on the locking block 821 and the bottom of the installation groove 811. The two ends of the second elastic member 822 are fixedly installed on the locking block 821 and the bottom of the installation groove 811 respectively; a plurality of card slots 22 are provided on the slot wall of the support plate 2 corresponding to the first sliding groove 21 and corresponding to the position of each locking block 821. The card slots 22 are arc-shaped, and the plurality of card slots 22 are arranged at equal intervals in the sliding direction of the sliding seat 81. The locking block 821 extends out of the installation groove at one end away from the second elastic member 822 and is clamped in the card slot 22. The locking block 821 is provided with an arc surface 8211 on the side close to the card slot 22; through the guiding effect of the arc surface 8211, the support plate 2 can be unlocked and locked in the process of sliding.

[0051] Reference Fig.10 The third limiting component 9 includes a locking disk 91 and at least one clamping block 92. The locking disk 91 is sleeved on the rotating shaft of the connecting seat 3 and rotatably installed on the sliding seat 81. The locking disk 91 is provided with a plurality of second locking grooves 911 spaced apart along the circumferential direction; the clamping block 92 is an elastic block. In the present embodiment, the clamping block 92 is a rubber block. The clamping block 92 is fixedly installed on the sliding seat 81, and the clamping block 92 is clamped to the locking disk 91 through the second locking groove 911; thereby, the unlocking and locking in the process of rotating the support plate 2 are completed by squeezing and restoring the clamping block 92.

[0052] The implementation principle of the armrest with multiple adjustment methods in the present application is: when the user needs to adjust the position of the support plate 2 according to his or her sitting posture or usage scenario, the support plate 2 can be directly pulled to make the outer tube 12 slide, thereby adjusting the up and down position of the support plate 2; the support plate 2 can also be adjusted at a horizontal angle by rotating the connecting seat 3; the front and rear positions of the support plate 2 can be adjusted by sliding the support plate 2; the support plate 2 can also be rotated to further adjust the adjustment range of the support plate 2 when the connecting seat 3 is different from being rotated.

[0053] In other embodiments, the support plate 2 can be rotatably mounted on the adjustment seat 4, and the connecting seat 3 is fixed on the outer cylinder 12 or is an integral structure with the outer cylinder 12; or the connecting seat 3 can be rotatably mounted on the outer cylinder 12, and the support plate 2 is fixedly connected to the connecting seat 3 or is an integral structure, which can also realize the adjustment of the support plate angle.

[0054] The technical effects of this utility model are mainly reflected in the following aspects:

[0055] The angle of the armrest is adjusted according to the user's needs to improve the user experience and enhance the overall comfort.

[0056] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An armrest with multiple adjustment modes, characterized in that: include: A support rod (1), a connecting seat (3) and a support plate (2) connected in sequence, wherein the support rod (1) comprises an inner cylinder (11) and an outer cylinder (12) sleeved outside the inner cylinder (11), and the inner cylinder (11) and the outer cylinder (12) are connected in a relatively sliding manner; The connecting seat (3) is rotatably mounted on the outer cylinder (12); and / or the supporting plate (2) is rotatably mounted on the connecting seat (3).

2. The armrest with multiple adjustment modes as claimed in claim 1, characterized in that: The outer cylinder (12) is provided with a bracket (4) and a connecting shaft (6); the upper surface of the bracket (4) is provided with a first rolling groove (41); and the first rolling groove (41) is provided with a rolling element (7); The connecting shaft (6) passes through the connecting seat (3) and is connected to the bracket (4), and the connecting seat (3) is rotatably connected to the outer side wall of the connecting shaft (6).

3. The armrest with multiple adjustment modes as claimed in claim 1, characterized in that: The top surface of the connection seat (3) forms a curved surface (31), and a gap exists between the curved surface (31) and the support plate (2).

4. The armrest with multiple adjustment modes as claimed in claim 1, characterized in that: The relative position between the outer cylinder (12) and the inner cylinder (11) is limited by a first limiting assembly (5); a locking plate (14) is slidably installed in the inner cylinder (11); the locking plate (14) is connected to the outer cylinder (12); a mounting box (142) is installed on the locking plate (14); a protruding opening is provided on one side outside the mounting box (142); a first limiting assembly (5) is installed in the mounting box (142); a plurality of locking grooves (111) are spaced apart on the side wall of the inner cylinder (11) along the length direction; the first limiting assembly (5) passes through the locking plate (14) through the protruding opening and is engaged with the locking grooves (111).

5. The armrest with multiple adjustment modes as claimed in claim 4, characterized in that: The first limiting assembly (5) comprises a swinging rod (51) and a locking block (52), wherein the swinging rod (51) is swingably mounted in the installation box (142); one end of the locking block (52) is connected to one end of the swinging rod (51) away from the rotating shaft, and the other end of the locking block (52) passes through the extension opening to pass through the locking plate (14) and is locked in the locking groove (111); the first limiting assembly (5) also comprises a driving member (53) for driving the swinging rod (51) to swing, wherein the driving member (53) comprises a first elastic member (531), and the first elastic member (531) is respectively connected to the swinging rod (51) and a side of the installation box (142) away from the extension opening.

6. The armrest with multiple adjustment modes according to claim 5, characterized in that: A first inclined surface (521) is provided on the upward side of the locking block (52); the armrest further comprises: a reset member (54) at the locking groove (111) for driving the locking block (52) to reset to an initial position; a first movable groove (1421) is provided on the side wall of the locking plate (14) in the thickness direction and corresponding to the rotating shaft of the swinging rod (51); the first movable groove (1421) extends in the sliding direction of the locking plate (14); and the rotating shaft end of the swinging rod (51) is slidably mounted on the mounting box (142) through the first movable groove (1421).

7. The armrest with multiple adjustment modes according to claim 6, characterized in that: The reset member (54) comprises: a sliding rod (541) parallel to the rotation axis of the swing rod (51), the sliding rod (541) being mounted on the locking block (52), the installation box (142) being provided with a second movable groove (1422) at a side wall where the first movable groove (1421) is provided and corresponding to the position of the sliding rod (541), the end of the sliding rod (541) being slidingly mounted on the installation box (142) through the second movable groove (1422); the installation box (142) being provided with a avoiding groove (1423) at a top position corresponding to the second movable groove (1422), and when the sliding rod (541) is locked in the avoiding groove (1423), the locking block (52) is locked in the locking groove (111); The side wall of the inner cylinder (11) is provided with a driving groove (112) extending in the sliding direction of the locking plate (14); one end of the sliding rod (541) extends out of the locking plate (14) and is slidingly mounted on the inner cylinder (11) through the driving groove (112); when the locking plate (14) slides upward until the locking block (52) leaves the locking groove (111) located at the top, the end wall of the driving groove (112) pushes the sliding rod (541) to be locked into the bottom of the second movable groove (1422).

8. The armrest with multiple adjustment modes according to claim 1, characterized in that: The support plate (2) is slidably and rotatably mounted on the connecting seat (3), and the connecting seat (3) is provided with a second limit assembly (8) for limiting the sliding position of the support plate (2) and a third limit assembly (9) for limiting the rotational position of the support plate (2).

9. The armrest with multiple adjustment modes according to claim 8, characterized in that: The second limiting assembly (8) comprises: a sliding seat (81) and a locking member (82); a first sliding groove (21) is provided in the support plate (2); the sliding seat (81) is rotatably connected to the connecting seat (3); the sliding seat (81) is slidably mounted on the support plate (2) through the first sliding groove (21); the locking member (82) is used to limit the sliding position of the sliding seat (81); The locking member (82) comprises: a locking block (821) and a second elastic member (822); a mounting groove (811) is provided on the side wall of the sliding seat (81); the locking block (821) is slidably mounted on the sliding seat (81) through the mounting groove (811); the second elastic member (822) is mounted on the locking block (821) and the groove bottom of the mounting groove (811); the support plate (2) is provided with a plurality of slots (22) arranged at intervals in the sliding direction of the sliding seat (81) at a position corresponding to the slot wall of the first sliding groove (21) and corresponding to the locking block (821); an end of the locking block (821) away from the second elastic member (822) extends out of the mounting groove (811) and is engaged with the slot (22); and a curved surface (8211) is provided on a side of the locking block (821) close to the slot (22).

10. The armrest with multiple adjustment modes according to claim 9, characterized in that: The third limiting assembly (9) comprises: a locking disk (91) and at least one clamping block (92); the locking disk (91) is sleeved on the connecting seat (3) and rotatably mounted on the rotating shaft of the sliding seat (81); the locking disk (91) is provided with a plurality of second locking grooves (911) spaced apart along the circumferential direction; the clamping block (92) is an elastic block; the clamping block (92) is mounted on the sliding seat (81); the clamping block (92) is clamped to the locking disk (91) through the second locking groove (911).

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