Seat and armrest thereof

Abstract

The utility model discloses a seat and an armrest thereof. The seat comprises an armrest part, the upper end of the supporting part is connected with the handrail part; the outer sleeve shell is arranged outside the supporting part in a vertically sliding and sleeving mode, and a plurality of longitudinally-arranged gear grooves are formed in the outer sleeve shell; the rotating rod is arranged in the supporting part, a rotating shaft, a shifting rod and a limiting block are sequentially arranged on the rotating rod in a protruding mode from top to bottom, the rotating rod is rotationally connected with the supporting part through the rotating shaft, the shifting rod stretches out of the supporting part, the limiting block can be clamped into the gear groove after stretching out of the supporting part, and the limiting block can be driven to be disengaged from the gear groove by pressing the shifting rod; the elastic piece is arranged between the upper end of the rotating rod and the supporting part, and the elastic piece is used for resetting the rotating rod and can drive the limiting block to be clamped into the gear groove. According to the scheme, the limiting block is separated from the gear groove by pressing the deflector rod, then the height of the armrest part can be adjusted by moving the supporting part up and down, and the rotating rod is reset under the action of the elastic piece by loosening the deflector rod, so that the limiting block is clamped into the gear groove.

Description

Technical Field

[0001] The utility model relates to the field of seats, in particular to a seat and an armrest thereof. Background Art

[0002] Chairs are a common daily furniture on the market. Existing chairs usually have functions such as seat rotation, seat height adjustment, and backrest angle adjustment. Many office workers or students sit on chairs for most of the day, and usually use their lunch break to lay down the backrest and rest on the chair. The armrests of many chairs on the market are not adjustable in height, which makes it impossible for people of different body shapes to adjust the height of the armrests of the chairs according to their needs, resulting in incompatibility during use. In recent years, chairs with adjustable armrest height have gradually been developed. Users can adjust the armrest height to an appropriate position according to their needs to improve comfort.

[0003] The patent application with publication number CN220403552U discloses a liftable armrest. When the user wants to adjust the height of the armrest, he can do so by directly pulling up the armrest body. When the user wants to adjust the armrest down, he can pull the handle upwards, and the handle seat moves upwards at the same time. The top block on the handle seat presses the abutment part of the adjustment buckle, so that the adjustment buckle rotates inward and retracts, and the oblique tooth buckle escapes from the original oblique tooth groove. At this time, the armrest body is pressed down to a suitable position and the handle is released. The handle seat returns downward, and the adjustment buckle is rotated and reset to the corresponding oblique tooth groove by the action of the first elastic member to be clamped and fixed. However, the patent has the following problems: 1. The armrest is installed on the side of the support rod, and the armrest cannot be adjusted to the left and right positions; 2. The buckle armrest has many parts, and the assembly is cumbersome, and the production efficiency is low. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a seat and an armrest thereof. The armrest in the utility model has a simple overall structure, is easy to assemble, has high production efficiency, and can be horizontally rotated to achieve left and right position adjustment of the armrest.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A handrail, comprising:

[0007] Armrests;

[0008] A support portion, the upper end of which is connected to the armrest portion;

[0009] An outer shell is slidably mounted outside the support portion, and a plurality of longitudinally arranged gear slots are provided on the outer shell;

[0010] The rotating rod is arranged in the supporting part, and the rotating rod is provided with a rotating shaft, a lever and a limit block in sequence from top to bottom. The rotating rod is rotatably connected with the supporting part through the rotating shaft, the lever extends out of the supporting part, and the limit block can be inserted into the gear slot after extending out of the supporting part. Pressing the lever can drive the limit block to escape from the gear slot;

[0011] The elastic member is arranged between the upper end of the rotating rod and the supporting part. The elastic member is used to reset the rotating rod and can drive the limiting block to snap into the gear slot.

[0012] In this way, by pressing the lever of the rotating rod to make the limit block of the rotating rod disengage from the gear slot, and then moving the support part up and down can drive the armrest part to move up and down to adjust the height of the armrest part, release the lever on the rotating rod, and the rotating rod is reset under the action of the elastic part so that the limit block is stuck in the gear slot to complete the height adjustment of the armrest part.

[0013] Preferably, the outer shell is formed by a first shell and a second shell in a snap-fitting manner, the shift slot is provided on the first shell; the second shell is provided with a first limiting slot, the support portion is provided with a limiting convex point, the limiting convex point is provided in the first limiting slot and can move up and down along the first limiting slot. In this way, by providing the first limiting slot on the second shell and providing the limiting convex point on the support portion, the up and down movement stroke of the support portion is limited, thereby preventing the support portion from falling out of the outer shell.

[0014] Preferably, the support part is provided with a first opening and a second opening, the lever extends out of the support part through the first opening, the limit block extends out of the support part through the second opening, the limit convex point and the second opening are respectively arranged on two opposite side walls of the support part, the limit convex point and the second opening are at the same height, and the limit convex point and the first opening are arranged on the same side wall of the support part; the rotating shaft and the limit block are respectively arranged on two opposite side walls of the rotating rod. The moving stroke of the limit convex point is the moving stroke of the first opening, thereby ensuring the moving stroke of the upper limit block of the rotating rod; since the limit convex point and the first opening are arranged on the same side wall of the supporting part, and the limit convex point and the second opening are arranged on two opposite side walls of the supporting part, the upper limit block of the rotating rod and the lever are in different directions, and the lever is pulled upward to drive the rotating rod to rotate, so that the limit block is out of the gear slot, and the unlocking action is more in line with the user's usage habits.

[0015] Preferably, the support part includes a support shell and a rotating seat, two opposite rotating shaft seats are provided in the support shell, the rotating rod is arranged in the support shell, the two ends of the rotating shaft on the rotating rod are respectively supported on the two rotating shaft seats of the support shell, the rotating seat is fixedly installed on the top of the support shell and covers the upper opening of the support shell, a receiving groove is provided below the rotating seat, a mounting seat is provided at the upper end of the rotating rod, one end of the elastic member is sleeved on the mounting seat of the rotating rod, and the other end of the elastic member is arranged in the receiving groove of the rotating seat; the armrest part includes an armrest body and a rotating arm, the armrest body is installed at one end of the rotating arm, and a rotating hole is opened at the other end of the rotating arm, and the rotating arm can be rotatably sleeved on the rotating seat through the rotating hole.

[0016] Preferably, two limiters are provided below the rotating seat, and when the rotating seat is mounted on the supporting shell, the two limiters are respectively located above the two rotating shaft seats of the supporting shell, and there is a gap between the limiters and the corresponding rotating shaft seats. In this way, the rotating shaft of the rotating rod is radially limited to prevent the rotating shaft from being separated from the rotating shaft seat.

[0017] Preferably, the support part further includes a limit seat, the limit seat includes a first connection part and a second connection part, the second connection part is arranged below the first connection part and the diameter of the second connection part is smaller than the first connection part, and at least one clamping block is also arranged below the first connection part; a limit surface is arranged in the rotation hole of the rotating arm, a rotation groove adapted to the clamping block is opened on the limit surface, the first connection part of the limit seat abuts against the limit surface of the rotating arm, the clamping block of the first connection part is limitedly arranged in the rotation groove, and the second connection part of the limit seat is fixedly connected to the rotating seat after passing through the rotation hole. In this way, the rotating arm can only rotate circumferentially on the rotating shaft seat, and the rotation angle of the rotating arm is limited.

[0018] Preferably, the support portion also includes a rotating ring arranged between the rotating seat and the rotating arm, a plurality of limiting protrusions are provided on the upper surface of the rotating ring, a rotating ring groove is provided below the rotating arm, a plurality of second limiting grooves matched with the limiting protrusions are provided in the rotating ring groove, the rotating ring is limitedly arranged in the rotating ring groove of the rotating arm, and the second connecting portion of the limiting seat is fixedly connected to the rotating seat after passing through the rotating hole and the rotating ring.

[0019] Preferably, the support portion further comprises a cover plate, which is fixedly mounted in the rotation hole of the rotating arm and can cover the rotation hole.

[0020] Preferably, the invention further comprises a connecting shell, which is sleeved outside the outer shell and fixedly connected with the outer shell by clamping. The connecting shell is used to be fixedly connected with the seat of the seat.

[0021] A seat comprises an armrest as described above.

[0022] The utility model has the following beneficial effects due to the adoption of the above technical solution: in the utility model, the rotating rod is used as a lever structure, and the rotating rod is rotated as a whole around the rotating shaft by pressing the lever of the rotating rod, so that the limit block of the rotating rod escapes from the gear slot, and the elastic member is deformed at this time, and then the support part is moved up and down to drive the armrest part to move up and down, so as to adjust the height of the armrest part, and the lever on the rotating rod is released, and the rotating rod is reset under the action of the elastic member so that the limit block is re-engaged in the gear slot, and the height adjustment of the armrest part is completed, and the overall structure is simple. The armrest part on the utility model is rotatably connected to the support part through the rotating arm, so that the armrest part can be rotated in the horizontal direction, and the user can adjust the left and right position of the armrest part according to actual needs, thereby improving the comfort of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the utility model after the connecting shell is removed;

[0025] Figure 3 yes Figure 2 Schematic diagram of the structure from another angle;

[0026] Figure 4 This is a schematic diagram of the structure of the utility model after removing the connecting shell, the outer shell and the supporting part;

[0027] Figure 5 It is an exploded view of the utility model;

[0028] Figure 6 is a schematic diagram of the structure of the supporting shell;

[0029] Figure 7 It is a structural diagram of the limit seat;

[0030] Figure 8 It is a schematic diagram of the structure of the rotating arm;

[0031] Fig. 9 It is a schematic diagram of the cross-sectional structure of the utility model.

[0032] Reference numerals: 1, armrest; 11, armrest body; 12, rotating arm; 121, rotating hole; 122, rotating ring groove; 1221, second limiting groove; 1211, limiting surface; 1212, rotating groove; 2, supporting portion; 21, first opening; 22, second opening; 23, limiting convex point; 201, supporting shell; 211, rotating shaft seat; 202, rotating seat; 221, accommodating groove; 222, limiting member; 223, third limiting groove; 203, rotating ring; 231, limiting protrusion; 204, limiting seat; 241, first connecting part; 2411, clamping block; 242, second connecting part; 2421, positioning block; 205, cover plate; 3, outer shell; 31, first shell; 311, gear slot; 32, second shell; 321, first limiting slot; 4, rotating rod; 41, rotating shaft; 42, shifting rod; 43, limiting block; 44, mounting seat; 5, elastic member; 6, connecting shell. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like 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 simplifying the description, 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.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] like Figures 1 to 9 As shown, the utility model discloses an armrest, comprising:

[0039] Armrest 1;

[0040] A support portion 2, the upper end of the support portion 2 is connected to the armrest portion 1;

[0041] The outer shell 3 is slidably mounted on the support portion 2, and a plurality of longitudinally arranged gear slots 311 are formed on the outer shell 3;

[0042] The rotating rod 4 is arranged in the supporting part 2. The rotating rod 4 is provided with a rotating shaft 41, a lever 42 and a limit block 43 from top to bottom. The rotating rod 4 is rotatably connected to the supporting part 2 through the rotating shaft 41. The lever 42 extends out of the supporting part 2. The limit block 43 can be inserted into the gear slot 311 after extending out of the supporting part 2. Pressing the lever 42 can drive the limit block 43 to escape from the gear slot 311.

[0043] The elastic member 5 is disposed between the upper end of the rotating rod 4 and the supporting portion 2 . The elastic member 5 is used to reset the rotating rod 4 and can drive the limiting block 43 to snap into the shifting groove 311 .

[0044] In the utility model, the rotating rod 4 is used as a lever structure. By pressing the lever 42 of the rotating rod 4, the rotating rod 4 is rotated as a whole around the rotating shaft 41, so that the limit block 43 of the rotating rod 4 escapes from the gear groove 311. At this time, the elastic member 5 is deformed, and then the support part 2 is moved up and down to drive the armrest part 1 to move up and down, so as to adjust the height of the armrest part 1. When the armrest part 1 is adjusted to an appropriate position, the lever 42 on the rotating rod 4 is released, and the rotating rod 4 is reset under the action of the elastic member 5 so that the limit block 43 is re-engaged in the gear groove 311, and the height adjustment of the armrest part 1 is completed. The overall structure is simple.

[0045] The support portion 2 is provided with a first opening 21 and a second opening 22 , respectively. The lever 42 extends out of the support portion 2 through the first opening 21 , and the limit block 43 extends out of the support portion 2 through the second opening 22 .

[0046] In one embodiment, the limiting protrusion 23 and the second opening 22 are respectively arranged on two opposite side walls of the support portion 2, the limiting protrusion 23 and the second opening 22 are at the same height, and the limiting protrusion 23 and the first opening 21 are arranged on the same side wall of the support portion 2; the rotating shaft 41 and the limiting block 43 are respectively arranged on two opposite side walls of the rotating rod 4. In this case, it is necessary to pull up the lever 42 on the rotating rod 4 to make the limiting block 43 escape from the gear slot 311.

[0047] In another embodiment, the limiting protrusion 23 and the second opening 22 are respectively arranged on two opposite side walls of the support portion 2, the limiting protrusion 23 and the second opening 22 are at the same height, and the second opening 22 and the first opening 21 are arranged on the same side wall of the support portion 2; the rotating shaft 41 and the limiting block 43 are arranged on two identical side walls of the rotating rod 4. In this case, it is necessary to press down the lever 42 on the rotating rod 4 to make the limiting block 43 escape from the shifting slot 311.

[0048] In the utility model, the rotating shaft 41 and the limit block 43 are integrally formed on the rotating rod 4, and the shifting rod 42 is additionally inserted on the rotating rod 4. In this way, during assembly, the rotating rod 4 is first inserted into the supporting portion 2, the rotating shaft 41 of the rotating rod 4 is rotatably supported on the supporting portion 2, and then the shifting rod 42 is inserted into the rotating rod 4 through the first opening 21 to drive the rotating rod 4 to rotate.

[0049] like Figure 2 , Figure 3 and Figure 5As shown, the outer shell 3 is formed by the first shell 31 and the second shell 32 being snap-fitted, the shift slot 311 is provided on the first shell 31; the second shell 32 is provided with a first limiting slot 321, and the support portion 2 is provided with a limiting convex point 23, which is arranged in the first limiting slot 321 and can move up and down along the first limiting slot 321. In this way, it is more convenient to assemble the outer shell 3 on the support portion 2, and by providing the first limiting slot 321 on the second shell 32 and the limiting convex point 23 on the support portion 2, the up and down movement stroke of the support portion 2 is limited, so as to prevent the support portion 2 from falling out of the outer shell 3.

[0050] like Figures 4 to 8 As shown, the support portion 2 includes a support shell 201 and a rotating seat 202. Two opposite rotating shaft seats 211 are provided in the support shell 201. The rotating rod 4 is arranged in the support shell 201. The two ends of the rotating shaft 41 on the rotating rod 4 are respectively supported on the two rotating shaft seats 211 of the supporting shell 201. The rotating seat 202 is fixedly installed above the supporting shell 201 and covers the upper opening of the supporting shell 201. A receiving groove 221 is provided below the rotating seat 202. A mounting seat 44 is provided at the upper end of the rotating rod 4. One end of the elastic member 5 is sleeved on the mounting seat 44 of the rotating rod 4, and the other end of the elastic member 5 is arranged in the receiving groove 221 of the rotating seat 202. Generally speaking, the elastic member 5 is a spring, and the rotating seat 202 can be fixedly installed on the supporting shell 201 by fasteners.

[0051] In order to prevent the rotating shaft 41 from escaping from the rotating shaft seat 21 during rotation, two limiting members 222 are further provided under the rotating seat 202. When the rotating seat 202 is installed on the supporting shell 201, the two limiting members 222 are respectively located above the two rotating shaft seats 211 of the supporting shell 201. There is a gap between the limiting members 222 and the corresponding rotating shaft seats 211, thereby radially limiting the rotating shaft 41.

[0052] In the present invention, the armrest portion 1 includes an armrest body 11 and a rotating arm 12, the armrest body 11 is mounted on one end of the rotating arm 12, the other end of the rotating arm 12 is provided with a rotating hole 121, and the rotating arm 12 is rotatably sleeved on the rotating seat 202 through the rotating hole 121. The armrest portion 1 of the present invention is rotatably connected to the support portion 2 through the rotating arm 12, so that the armrest portion 1 can be rotated in the horizontal direction, and the user can adjust the left and right position of the armrest portion 1 according to actual needs to improve the comfort of use.

[0053] The support portion 2 also includes a limit seat 204. Figure 7As shown, the limiting seat 204 includes a first connecting portion 241 and a second connecting portion 242, the second connecting portion 242 is arranged below the first connecting portion 241 and the diameter of the second connecting portion 242 is smaller than the first connecting portion 241, and at least one blocking block 2411 is also arranged below the first connecting portion 241; a limiting surface 1211 is arranged in the rotating hole 121 of the rotating arm 12, and a rotating groove 1212 adapted to the blocking block 2411 is opened on the limiting surface 1211, the first connecting portion 241 of the limiting seat 204 is abutted against the limiting surface 1211 of the rotating arm 12, the blocking block 2411 of the first connecting portion 241 is limitedly arranged in the rotating groove 1212, and the second connecting portion 242 of the limiting seat 204 passes through the rotating hole 121 and is fixedly connected to the rotating seat 202 by fasteners. In the utility model, a positioning block 2421 is provided on the lower surface of the second connection part 242 of the limit seat 204, and a third limiting groove 223 is provided on the rotating seat 202. In this way, the limit seat 204 can be pre-positioned on the rotating seat 202 through the cooperation of the positioning block 2421 and the third limiting groove 223, which is convenient for installing fasteners.

[0054] like Figure 5 As shown, the support portion 2 also includes a rotating ring 203 arranged between the rotating seat 202 and the rotating arm 12, and a plurality of limiting protrusions 231 are arranged on the upper surface of the rotating ring 203. A rotating ring groove 122 is arranged below the rotating arm 12, and a plurality of second limiting grooves 1221 adapted to the limiting protrusions 231 are arranged in the rotating ring groove 122. The rotating ring 203 is limitedly arranged in the rotating ring groove 122 of the rotating arm 12, and the second connecting portion 242 of the limiting seat 204 passes through the rotating hole 121 and the rotating ring 203 and is fixedly connected to the rotating seat 202.

[0055] like Figure 5 As shown, the support portion 2 further comprises a cover plate 205, which is fixedly mounted in the rotation hole 121 of the rotation arm 12 and can cover the rotation hole 121. In the present utility model, the cover plate 205 is clamped in the rotation hole 121 of the rotation arm 12 by buckles.

[0056] like Figure 1 and Figure 5 As shown, the armrest further comprises a connecting shell 6, which is sleeved outside the outer shell 3 and fixedly engaged with the outer shell 3. The connecting shell 6 is used to be fixedly connected with the seat of the seat.

[0057] The utility model also discloses a seat, comprising the armrest as described above.

[0058] All features described in the specification, the attached claims and the drawings, whether alone or in any combination thereof, are important features of the present utility model.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "an implementation", "specific implementation", "other implementations", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment, implementation or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described above may also be combined in a suitable manner in any one or more embodiments, implementations or examples. The technical solution recorded in the present utility model also includes a technical solution formed by any one or more of the specific features, structures, materials or characteristics described above in a separate or combined manner.

[0060] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. Ordinary technicians in the field can change, modify, replace, modify, delete some features, add features or re-combine features to form a technical solution in the above embodiments without departing from the principles and purpose of the utility model within the scope of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the innovative principles of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. A handrail, characterized in that: include: Armrest (1); A support portion (2), wherein the upper end of the support portion (2) is connected to the armrest portion (1); An outer shell (3) is slidably mounted on the outside of the support portion (2) up and down, and a plurality of longitudinally arranged shift slots (311) are provided on the outer shell (3); the outer shell (3) is formed by a first shell (31) and a second shell (32) being snap-fitted together, and the shift slots (311) are provided on the first shell (31); the second shell (32) is provided with a first limiting slot (321), and the support portion (2) is provided with a limiting protrusion (23), and the limiting protrusion (23) is arranged in the first limiting slot (321) and can move up and down along the first limiting slot (321); A rotating rod (4) is arranged in the support portion (2), and the rotating rod (4) is provided with a rotating shaft (41), a lever (42) and a limit block (43) in sequence from top to bottom. The rotating rod (4) is rotatably connected to the support portion (2) via the rotating shaft (41). The lever (42) extends out of the support portion (2), and the limit block (43) can be inserted into the gear slot (311) after extending out of the support portion (2). Pressing the lever (42) can drive the limit block (43) to escape from the gear slot (311). An elastic member (5) is arranged between the upper end of the rotating rod (4) and the supporting portion (2); the elastic member (5) is used to reset the rotating rod (4) and can drive the limiting block (43) to snap into the gear slot (311).

2. The handrail according to claim 1, characterized in that: The support portion (2) is provided with a first opening (21) and a second opening (22), the lever (42) extends out of the support portion (2) through the first opening (21), the limit block (43) extends out of the support portion (2) through the second opening (22), the limit convex point (23) and the second opening (22) are respectively arranged on two opposite side walls of the support portion (2), the limit convex point (23) and the second opening (22) are at the same height, and the limit convex point (23) and the first opening (21) are arranged on the same side wall of the support portion (2); the rotating shaft (41) and the limit block (43) are respectively arranged on two opposite side walls of the rotating rod (4).

3. The handrail according to claim 1, characterized in that: The support portion (2) comprises a support shell (201) and a rotating seat (202); two rotating shaft seats (211) facing each other are arranged in the support shell (201); the rotating rod (4) is arranged in the support shell (201); two ends of a rotating shaft (41) on the rotating rod (4) are respectively supported on two rotating shaft seats (211) of the support shell (201); the rotating seat (202) is fixedly mounted above the support shell (201) and covers the upper opening of the support shell (201); a receiving groove (221) is arranged below the rotating seat (202); the rotating rod (4) A mounting seat (44) is provided at the upper end, one end of the elastic member (5) is sleeved on the mounting seat (44) of the rotating rod (4), and the other end of the elastic member (5) is arranged in a receiving groove (221) of the rotating seat (202); the armrest portion (1) comprises an armrest body (11) and a rotating arm (12), the armrest body (11) is mounted on one end of the rotating arm (12), and a rotating hole (121) is formed at the other end of the rotating arm (12), and the rotating arm (12) is rotatably sleeved on the rotating seat (202) through the rotating hole (121).

4. The handrail according to claim 3, characterized in that: Two limiting members (222) are also provided below the rotating seat (202); when the rotating seat (202) is mounted on the supporting shell (201), the two limiting members (222) are respectively located above two rotating shaft seats (211) of the supporting shell (201), and a gap exists between the limiting members (222) and the corresponding rotating shaft seats (211).

5. The handrail according to claim 3, characterized in that: The support portion (2) further comprises a limiting seat (204), the limiting seat (204) comprising a first connecting portion (241) and a second connecting portion (242), the second connecting portion (242) being arranged below the first connecting portion (241) and having a diameter smaller than the first connecting portion (241), and at least one clamping block (2411) being arranged below the first connecting portion (241); a limiting surface (2411) is arranged in the rotating hole (121) of the rotating arm (12); 1211), a rotation groove (1212) adapted to the clamping block (2411) is provided on the limiting surface (1211), the first connecting portion (241) of the limiting seat (204) abuts against the limiting surface (1211) of the rotating arm (12), the clamping block (2411) of the first connecting portion (241) is limitedly arranged in the rotation groove (1212), and the second connecting portion (242) of the limiting seat (204) passes through the rotating hole (121) and is fixedly connected to the rotating seat (202).

6. The handrail according to claim 5, characterized in that: The support portion (2) further comprises a rotating ring (203) arranged between the rotating seat (202) and the rotating arm (12); a plurality of limiting protrusions (231) are arranged on the upper surface of the rotating ring (203); a rotating ring groove (122) is arranged below the rotating arm (12); a plurality of second limiting grooves (1221) matched with the limiting protrusions (231) are arranged in the rotating ring groove (122); the rotating ring (203) is limitedly arranged in the rotating ring groove (122) of the rotating arm (12); and a second connecting portion (242) of the limiting seat (204) passes through the rotating hole (121) and the rotating ring (203) and is fixedly connected to the rotating seat (202).

7. The handrail according to claim 3, characterized in that: The support portion (2) further comprises a cover plate (205), wherein the cover plate (205) is fixedly mounted in the rotation hole (121) of the rotation arm (12) and is capable of shielding the rotation hole (121).

8. The handrail according to claim 1, characterized in that: It also comprises a connecting shell (6), wherein the connecting shell (6) is sleeved outside the outer shell (3) and is fixedly connected to the outer shell (3) by clamping.

9. A seat, characterized in that: The invention comprises an armrest as claimed in any one of claims 1 to 8.

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