Adjustable armrest and seat with same

Abstract

The utility model discloses an adjustable armrest and a seat with the same, and the adjustable armrest comprises an armrest body, a mounting plate provided with a connecting end, a connecting outer shell rotatably arranged at the connecting end, a connecting inner shell slidably arranged at the connecting outer shell, a connecting component arranged in the connecting outer shell, and a swing rod, the connecting component is provided with a first position and a second position relative to the connecting outer shell, a first clamping part and a second clamping part are formed on the connecting component, the swing rod is rotationally arranged in the connecting inner shell, and the swing rod is configured to be capable of driving the connecting component to be switched between the first position and the second position when being subjected to external pressure; when the connecting component is located at the first position, the first clamping part clamps the connecting inner shell relative to the connecting outer shell, and the second clamping part locks the connecting outer shell relative to the connecting end; and when the connecting component is located at the second position, the clamping and the locking are released. By means of the armrest adjusting device, the height position and the inclination angle of the armrest relative to the seat frame can be adjusted at the same time in single operation.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to an adjustable armrest and a seat having the same armrest. Background Technology

[0002] The armrests of a chair provide support for the user's arms, reducing arm fatigue. For users of different heights and body types, the suitable position and tilt angle of the armrests will vary. Therefore, some chair armrests in related technologies have height and tilt adjustment functions. However, existing armrests require separate height and tilt adjustment mechanisms to achieve these functions. In practical applications, users need to operate these mechanisms separately, which is cumbersome. Furthermore, while the armrest's tilt angle and height relative to the seat frame are fixed when in the suitable position, adjusting the tilt angle changes the height of the armrest itself, often requiring users to make repeated adjustments to achieve the desired position. Utility Model Content

[0003] The purpose of this utility model is to provide an adjustable armrest and a seat with the same, which can simultaneously adjust the height position and tilt angle of the armrest relative to the seat frame in a single operation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An adjustable armrest includes an armrest body and a mounting plate for mounting to a seat frame, the mounting plate having a connecting end, and the adjustable armrest further includes:

[0006] A connecting housing is rotatably mounted on the connecting end about a set axis, the set axis extending along the left-right direction of the seat;

[0007] The inner shell extends into the outer shell and the two slide along a set direction. The handrail body is located at the upper end of the inner shell, and the set direction intersects with the horizontal direction.

[0008] A connecting member, disposed within a connecting housing and having a first position and a second position relative to the connecting housing, the connecting member forming a first engaging portion and a second engaging portion; and...

[0009] A rocker arm, rotatably disposed within the connecting inner housing, is configured to drive the connecting member to switch between a first position and a second position when subjected to external pressure.

[0010] Wherein, the first snap-fit ​​part engages the inner shell with the outer shell when the connecting member is in the first position, and releases the engagement when the connecting member is in the second position;

[0011] The second locking part locks the connecting housing relative to the connecting end when the connecting member is in the first position, and releases the lock when the connecting member is in the second position.

[0012] Preferably, the connecting inner shell has an elongated hole extending along the set direction, and the inner wall of the elongated hole has a plurality of slots distributed along the set direction. The first engaging part is slidably disposed in the elongated hole, and the first engaging part engages into the slot when the connecting member is in a first position and disengages from the slot when the connecting member is in a second position.

[0013] Preferably, the bottom of the connecting housing is rotatably disposed relative to the connecting end about a set axis, and the connecting end is provided with a plurality of locking teeth circumferentially along the set axis. The second locking part engages with the locking teeth when the connecting member is in the first position and disengages from the locking teeth when the connecting member is in the second position.

[0014] Preferably, the retaining teeth are formed on the connecting end;

[0015] Alternatively, the adjustable handrail may further include a fixing block fixedly disposed on the connecting end, and the locking teeth are formed on the fixing block.

[0016] Preferably, the swing arm passes through the connecting member and the two are fitted with a gap. The swing arm drives the connecting member to switch between a first position and a second position through a swinging motion. The connecting shell includes a first shell and a limiting shell fixedly disposed in the first shell. The connecting member is disposed in the limiting shell, and the limiting shell is disposed in the connecting inner shell. The limiting shell is used to limit the movement path of the connecting member.

[0017] Preferably, the limiting shell is provided with a first opening for the swing arm to pass through, a second opening for the first locking part to pass through, and a third opening for the second locking part to pass through; the connecting inner shell is provided with a fourth opening that slides with the limiting shell, and the second locking part extends out from the fourth opening to engage with the connecting end.

[0018] Preferably, the connecting member includes a first connecting arm, a second connecting arm, and an intermediate arm. The first connecting arm and the second connecting arm both extend along a predetermined direction and are spaced apart. The two ends of the intermediate arm are fixed to the first connecting arm and the second connecting arm, respectively. The first locking part is a locking shaft disposed on the first connecting arm, and the second locking part is a locking claw disposed on the second connecting arm. The swing rod passes between the first connecting arm and the second connecting arm and is respectively in clearance fit with the first connecting arm and the second connecting arm.

[0019] Preferably, the connecting housing further includes a second housing, which is sleeved on the outside of the first housing and the two are fixedly connected. The bottom of the second housing has an assembly groove, and the connecting end is rotatably disposed in the assembly groove.

[0020] Preferably, the upper end of the swing arm has a pressure-receiving portion, and the adjustable handrail further includes a push block and an elastic element. The push block extends from the outside into the connecting inner shell and is slidably disposed relative to the connecting inner shell. The push block is used to push the pressure-receiving portion to drive the swing arm to swing relative to the connecting inner shell. The elastic element is disposed inside the connecting inner shell and between the inner wall of the connecting inner shell and the pressure-receiving portion. The elastic element applies pressure to the swing arm so that the connecting member has a tendency to move towards a first position.

[0021] In addition, to achieve the above objectives, the present invention also adopts the following technical solution:

[0022] A seat, including a seat frame, the seat further including an adjustable armrest as described in any of the above technical solutions, the adjustable armrest being mounted on the seat frame via the mounting plate.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] A first and a second locking part are formed on the connecting member, which can apply pressure to the swing arm from the outside and drive the connecting member to switch between the first and second positions through the swing arm. This controls the inner shell of the connecting member to engage or disengage relative to the outer shell of the connecting member, and at the same time controls the outer shell of the connecting member to lock or unlock relative to the connecting end. This allows the handrail body to swing and adjust its height relative to the mounting plate in a single pressure operation on the swing arm, reducing the difficulty of operation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an adjustable handrail provided in an embodiment of this application;

[0026] Figure 2 Explosion of the adjustable armrest Figure 1 ;

[0027] Figure 3 Explosion of the adjustable armrest Figure 2 ;

[0028] Figure 4 This is a schematic diagram showing the inner shell, rocker arm, connecting member, and mounting plate connected in the first position.

[0029] Figure 5 This is a schematic diagram showing the inner shell, rocker arm, connecting member, and mounting plate connected when the connecting member is in the second position.

[0030] Figure 6This is a schematic diagram of the assembly of the connecting components and the swing arm;

[0031] Figure 7 This is a schematic diagram of the assembly of the connecting component and the limiting shell.

[0032] The components include: 1. Handrail body; 2. Mounting plate; 20. Connecting end; 3. Connecting shell; 30. First shell; 300. Fifth opening; 31. Second shell; 310. Assembly groove; 32. Limiting shell; 320. First opening; 321. Second opening; 322. Third opening; 323. First half shell; 324. Second half shell; 4. Connecting inner shell; 40. Elongated hole; 41. Slot; 42. Fourth opening; 5. Connecting component; 50. First connecting arm; 500. First locking part; 51. Second connecting arm; 510. Second locking part; 52. Intermediate arm; 6. Swing rod; 60. Pressure-bearing part; 7. Fixing block; 70. Locking tooth; 8. Push block; 9. Elastic element. Detailed Implementation

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0034] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] This embodiment provides an adjustable armrest, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the adjustable armrest includes an armrest body 1, a connecting inner shell 4, a swing arm 6, a connecting outer shell 3, and a mounting plate 2. The mounting plate 2 is used for mounting to the seat frame, and it has a connecting end 20. Specifically, in this embodiment, the mounting plate 2 has a mounting hole at one end, through which a screw can pass to lock the mounting plate 2 to the seat frame. The connecting end 20 is located at the other end of the mounting plate 2. The armrest body 1 is located at the upper end of the connecting inner shell 4, which extends into the connecting outer shell 3, and the two slide along a predetermined direction, which intersects with the horizontal direction. Therefore, the armrest body 1 can slide relative to the connecting outer shell 3 along the predetermined direction, following the connecting inner shell 4. It is easy to understand that when the set direction intersects the horizontal direction perpendicularly, the armrest body 1, following the connecting inner shell 4, slides along the set direction, which can cause the armrest body 1 to change position along the height direction of the seat; when the set direction intersects the horizontal direction at an angle other than perpendicular, the armrest body 1, following the connecting inner shell 4, slides along the set direction, which can not only cause the armrest body 1 to change position along the height direction of the seat, but also cause the armrest body 1 to change position along the front-back direction of the seat.

[0037] In this embodiment, the connecting outer shell 3 is rotatably mounted on the connecting end 20 about a predetermined axis, which extends along the left-right direction of the seat. Therefore, the armrest body 1 and the connecting inner shell 4 can rotate relative to the mounting plate 2 along with the connecting outer shell 3. This rotation can cause the armrest body 1 to change position relative to the seat frame in the front-back and height directions, and can also cause the armrest body 1 to change its tilt angle relative to the seat frame.

[0038] In this embodiment, the connecting member 5 is disposed within the connecting housing 3 and has a first position and a second position relative to the connecting housing 3. The connecting member 5 forms a first engaging portion 500 and a second engaging portion 510. In this embodiment, the rocker arm 6 is rotatably disposed within the connecting inner housing 4. The rocker arm 6 is configured to drive the connecting member 5 to switch between the first position and the second position when subjected to external pressure. In this embodiment, the first engaging portion 500 engages the connecting inner housing 4 with the connecting housing 3 when the connecting member 5 is in the first position and disengages when the connecting member 5 is in the second position. In this embodiment, the second engaging portion 510 locks the connecting housing 3 with the connecting end 20 when the connecting member 5 is in the first position and unlocks when the connecting member 5 is in the second position.

[0039] By forming a first snap-fit ​​portion 500 and a second snap-fit ​​portion 510 on the connecting member 5, pressure can be applied to the swing arm 6 from the outside and the connecting member 5 can be switched between the first position and the second position by the swing arm 6. This controls the inner shell 4 to snap or unlock relative to the outer shell 3, and at the same time controls the outer shell 3 to lock or unlock relative to the connecting end 20. Thus, the swing and lifting adjustment of the handrail body 1 relative to the mounting plate 2 can be realized in a single pressure operation on the swing arm 6, reducing the difficulty of operation.

[0040] Specifically, in this embodiment, such as Figure 2 As shown, the connecting inner shell 4 has an elongated hole 40 extending in a set direction. The inner wall of the elongated hole 40 has a plurality of slots 41 distributed in a set direction. The first engaging part 500 is slidably disposed in the elongated hole 40. The first engaging part 500 engages in the slot 41 when the connecting member 5 is in the first position and disengages from the slot 41 when the connecting member 5 is in the second position.

[0041] Specifically, in this embodiment, the bottom of the connecting shell 3 is rotatably disposed relative to the connecting end 20 about a set axis. Multiple locking teeth 70 are circumferentially disposed on the connecting end 20 along the set axis. The second locking portion 510 engages with the locking teeth 70 when the connecting member 5 is in a first position and disengages from the locking teeth 70 when the connecting member 5 is in a second position. Furthermore, the adjustable handrail provided in this embodiment also includes a fixing block 7 fixedly disposed on the connecting end 20, and the locking teeth 70 are formed on the fixing block 7. In an optional embodiment, the locking teeth 70 can also be directly formed on the connecting end 20. It is easily understood that adding a fixing block 7 with locking teeth 70 is more convenient for manufacturing than directly manufacturing the locking teeth 70 on the connecting end 20.

[0042] Through the structural design of the aforementioned slot 41 and tooth 70, the aforementioned engagement and locking can be achieved.

[0043] As mentioned earlier, in this embodiment, the lever 6 can drive the connecting member 5 to switch between the first position and the second position during a single operation. Specifically, in conjunction with... Figure 6As shown, in this embodiment, the swing arm 6 passes through the connecting member 5 and the two are fitted with a clearance. The swing arm 6 drives the connecting member 5 to switch between a first position and a second position through a swinging motion. Since the swing arm 6 is rotatably mounted on the connecting inner shell 4, the swing arm 6 can follow the connecting inner shell 4 to slide along a set direction and rotate around a set axis. Designing the swing arm 6 and the connecting member 5 with a clearance fit will not affect the movement of the swing arm 6 following the connecting inner shell 4. At the same time, the connecting outer shell 3 in this embodiment includes a first outer shell 30 and a limiting shell 32 fixedly disposed within the first outer shell 30. The connecting member 5 is disposed within the limiting shell 32, and the limiting shell 32 is disposed within the connecting inner shell 4. The limiting shell 32 is used to limit the movement path of the connecting member 5. The limiting shell 32 can limit the connecting member 5 to move only between the first position and the second position. Thus, when the connecting member 5 is in the first position, the connecting inner shell 4 can be engaged with the connecting outer shell 3 by the first snap-fit ​​part 500 and the snap-fit ​​groove 41. At the same time, the connecting outer shell 3 can be locked to the mounting plate 2 by the second snap-fit ​​part 510 and the snap-fit ​​tooth 70.

[0044] Furthermore, in combination Figure 3 and Figure 7 As shown, the limiting shell 32 is provided with a first opening 320 for the swing rod 6 to pass through, a second opening 321 for the first locking part 500 to pass through, and a third opening 322 for the second locking part 510 to pass through. In this embodiment, the first opening 320 is provided at both the upper and lower ends; that is, a first opening 320 is provided at the upper end of the limiting shell 32 for the swing rod 6 to enter the limiting shell 32, and a first opening 320 is provided at the lower end of the limiting shell 32 for the swing rod 6 to exit. In addition, in this embodiment, the first opening 320 and the third opening 322 at the lower end of the limiting shell 32 are connected, but optionally, they can be separated. At the same time, in this embodiment, the connecting inner shell 4 is provided with a fourth opening 42 that slides with the limiting shell 32, and the second locking part 510 extends from the fourth opening 42 to engage with the connecting end 20. By providing a fourth opening 42, interference between the inner shell 4 and the limiting shell 32 can be avoided when the inner shell 4 slides relative to the outer shell 3 in a set direction. It also allows the second snap-fit ​​part 510 to extend out and engage with the snap-fit ​​tooth 70.

[0045] For ease of assembly, the limiting shell 32 in this embodiment includes a first half-shell 323 and a second half-shell 324, which are detachably connected by a pin. During assembly, the connecting member 5 can be placed into the first half-shell 323 first, and then the second half-shell 324 can be installed together with the first half-shell 323. After that, the limiting shell 32 with the connecting member 5 is placed inside the limiting inner shell, and the swing rod 6 is set through the connecting member 5 and the limiting shell 32. Finally, the limiting shell 32 is fastened to the first outer shell 30 with screws. As mentioned above, a fourth opening 42 is provided on the connecting inner shell 4, and correspondingly, a fifth opening 300 is provided on the first outer shell 30. The fifth opening 300 is close to and communicates with the fourth opening 42. The second snap-fit ​​part 510 passes through the third opening 322 on the limiting shell 32, the fifth opening 300 on the first outer shell 30, and the fourth opening 42 on the connecting inner shell 4 in sequence and extends out to engage with the snap-fit ​​tooth 70. Meanwhile, the fourth opening 42 allows screws to be inserted from the outside into the interior of the connecting inner shell 4 and to lock and fix the first outer shell 30 and the limiting shell 32.

[0046] like Figure 6 As shown in the diagram, the connecting member 5 in this embodiment includes a first connecting arm 50, a second connecting arm 51, and an intermediate arm 52. Both the first connecting arm 50 and the second connecting arm 51 extend along a predetermined direction and are spaced apart. The two ends of the intermediate arm 52 are fixed to the first connecting arm 50 and the second connecting arm 51, respectively. A first locking portion 500 is a locking pin disposed on the first connecting arm 50, and a second locking portion 510 is a locking claw disposed on the second connecting arm 51. The swing rod 6 passes between the first connecting arm 50 and the second connecting arm 51 and is clearance-fitted with both the first connecting arm 50 and the second connecting arm 51. Thus, when the swing rod 6 receives external pressure, it can swing, and the swing rod 6, through this swinging motion, can act on the connecting member 5 and drive the connecting member 5 to switch between a first position and a second position.

[0047] As mentioned above, to facilitate the assembly of the connecting member 5 and the limiting shell 32, a fifth opening 300 is provided on the first outer shell 30 in this embodiment, and a fourth opening 42 is provided on the connecting inner shell 4. To prevent the fourth opening 42 and the fifth opening 300 from being exposed and affecting the appearance, combined with... Figure 1 , Figure 2 and Figure 3 As shown, the connecting housing 3 in this embodiment also includes a second housing 31, which is sleeved on the outside of the first housing 30 and the two are fixedly connected. The bottom of the second housing 31 has an assembly groove 310, and the connecting end 20 is rotatably disposed in the assembly groove 310. The aforementioned fixing block 7 is also located in the assembly groove 310, and the fixing block 7 is located between the connecting end 20 and the second housing 31.

[0048] Combination Figure 3 , Figure 4and Figure 5 As shown, in this embodiment, the upper end of the swing arm 6 has a pressure-receiving portion 60. The adjustable armrest also includes a push block 8 and an elastic member 9. The push block 8 extends from the outside into the connecting inner shell 4 and is slidably disposed relative to the connecting inner shell 4. The push block 8 is used to push the pressure-receiving portion 60 to drive the swing arm 6 to swing relative to the connecting inner shell 4. That is, the push block 8 is provided to facilitate operation by the user from the outside of the adjustable armrest. At the same time, in this embodiment, the elastic member 9 is disposed inside the connecting inner shell 4 and between the inner wall of the connecting inner shell 4 and the pressure-receiving portion 60. The elastic member 9 applies pressure to the swing arm 6 so that the connecting member 5 has a tendency to move towards the first position. That is, when no external force is applied, the swing arm 6 is held in a set position under the action of the elastic member 9. The set position allows the connecting member 5 to be in the first position. When the user pushes the push block 8, it can overcome the action of the elastic member 9 and cause the swing arm 6 to swing. The swing arm 6 drives the connecting member 5 to switch from the first position to the second position through the swinging action.

[0049] In other alternative embodiments, a bend extending outward from the inner shell 4 can be formed at the upper end of the rocker arm 6, and the user can make the rocker arm 6 swing by bending the bend.

[0050] In this embodiment, the handrail body 1 is disposed at the upper end of the connecting inner shell 4. Optionally, the handrail body 1 can be fixedly installed with the connecting inner shell 4, or the handrail body 1 can be rotatably disposed on the connecting inner shell 4. In addition, the handrail body 1 can be configured to slide relative to the connecting inner shell 4 along its own length direction.

[0051] The armrest body 1 provided in this embodiment can be applied to a seat, which includes a seat frame and an armrest body 1. The adjustable armrest is installed on the seat frame via a mounting plate 2.

[0052] It should be noted that, in this embodiment, "left" and "right" in the left-right direction of the seat refer to the user's left and right sides after the user sits on the seat. "Forward" in the front-back direction of the seat refers to the direction the user's eyes are looking when sitting on the seat; the opposite direction is "backward".

[0053] Finally, it should be noted that the above embodiments are only optional embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An adjustable armrest, comprising an armrest body and a mounting plate for mounting to a seat frame, the mounting plate having a connecting end, characterized in that, The adjustable armrest also includes: A connecting housing is rotatably mounted on the connecting end about a set axis, the set axis extending along the left-right direction of the seat; The inner shell is connected and extends into the outer shell, and the two are slidably arranged along a set direction. The handrail body is arranged at the upper end of the inner shell, and the set direction intersects with the horizontal direction. A connecting member, disposed within a connecting housing and having a first position and a second position relative to the connecting housing, the connecting member forming a first engaging portion and a second engaging portion; and... A rocker arm, rotatably disposed within the connecting inner housing, is configured to drive the connecting member to switch between a first position and a second position when subjected to external pressure. Wherein, the first snap-fit ​​part engages the inner shell with the outer shell when the connecting member is in the first position, and releases the engagement when the connecting member is in the second position; The second locking part locks the connecting housing relative to the connecting end when the connecting member is in the first position, and releases the lock when the connecting member is in the second position.

2. The adjustable armrest as described in claim 1, characterized in that, The connecting inner shell has an elongated hole extending along the set direction. The inner wall of the elongated hole has a plurality of slots distributed along the set direction. The first snap-fit ​​part is slidably disposed in the elongated hole. The first snap-fit ​​part is snapped into the slot when the connecting member is in the first position and disengaged from the slot when the connecting member is in the second position.

3. The adjustable armrest as described in claim 1, characterized in that, The bottom of the connecting housing is rotatably arranged relative to the connecting end about a set axis. Multiple locking teeth are arranged circumferentially along the set axis on the connecting end. The second locking part engages with the locking teeth when the connecting member is in the first position and disengages from the locking teeth when the connecting member is in the second position.

4. The adjustable armrest as described in claim 3, characterized in that, The retaining teeth are formed on the connecting end; Alternatively, the adjustable handrail may further include a fixing block fixedly disposed on the connecting end, and the locking teeth are formed on the fixing block.

5. The adjustable armrest as described in any one of claims 1 to 4, characterized in that, The swing arm passes through the connecting member and the two are fitted with a gap. The swing arm drives the connecting member to switch between a first position and a second position through a swinging motion. The connecting shell includes a first shell and a limiting shell fixedly disposed within the first shell. The connecting member is disposed within the limiting shell, and the limiting shell is disposed within the connecting inner shell. The limiting shell is used to limit the movement path of the connecting member.

6. The adjustable armrest as described in claim 5, characterized in that, The limiting shell is provided with a first opening for the swing arm to pass through, a second opening for the first locking part to pass through, and a third opening for the second locking part to pass through; The connecting inner shell is provided with a fourth opening that slides with the limiting shell, and the second snap-fit ​​portion extends out from the fourth opening to engage with the connecting end.

7. The adjustable armrest as described in claim 5, characterized in that, The connecting member includes a first connecting arm, a second connecting arm, and an intermediate arm. The first connecting arm and the second connecting arm both extend in a set direction and are spaced apart. The two ends of the intermediate arm are fixed to the first connecting arm and the second connecting arm, respectively. The first locking part is a locking shaft disposed on the first connecting arm, and the second locking part is a locking claw disposed on the second connecting arm. The swing arm passes between the first connecting arm and the second connecting arm and is respectively in clearance fit with the first connecting arm and the second connecting arm.

8. The adjustable armrest as described in claim 5, characterized in that, The connecting housing also includes a second housing, which is fitted over the outside of the first housing and the two are fixedly connected. The bottom of the second housing has an assembly groove, and the connecting end is rotatably disposed in the assembly groove.

9. The adjustable armrest as described in any one of claims 1 to 4, characterized in that, The upper end of the swing arm has a pressure-receiving part, and the adjustable handrail also includes a push block and an elastic element. The push block extends from the outside into the connecting inner shell and slides relative to the connecting inner shell. The push block is used to push the pressure-receiving part to drive the swing arm to swing relative to the connecting inner shell. The elastic element is disposed within the connecting inner shell and between the inner wall of the connecting inner shell and the pressure-bearing part, and the elastic element applies pressure to the swing arm such that the connecting member tends to move toward the first position.

10. A seat, including a seat frame, characterized in that, The seat further includes an adjustable armrest as described in any one of claims 1 to 9, the adjustable armrest being mounted on the seat frame via the mounting plate.

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