Seat armrest and seat with same

Abstract

The utility model provides a seat armrest and a seat with the same. The seat armrest comprises an armrest support and an armrest body assembled on the armrest support, and a multi-dimensional adjusting mechanism allowing the armrest body to be adjusted in a front-back translation mode and a left-right rotation mode relative to the armrest support is arranged in the armrest body. The multi-dimensional adjusting mechanism comprises a fixed part, a fixed part and a movable part, wherein the fixed part is fixedly connected to the armrest support; and a movable member connected to the armrest support so as to be rotatable left and right about a set axis. Wherein in the front-back direction, the movable part and the fixed part are kept relatively fixed, and the armrest main body translates relative to the movable part and the fixed part, so that front-back translation adjustment of the armrest main body is realized. In the left-right direction, the handrail body and the movable part are kept relatively fixed, and the handrail body and the movable part jointly rotate relative to the fixed part, so that left-right rotation adjustment of the handrail body is achieved. According to the scheme, multi-dimensional adjustment of the handrail is achieved through a simple and reliable structure.

Description

Technical Field

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

[0002] As an important component of a seat, the adjustability and ease of adjustment of the armrest directly affect the user's comfort. Existing technologies offer various armrest adjustment mechanisms, some allowing for single-dimensional adjustment (e.g., some armrests support forward and backward movement, while others support left-right rotation or up-down tilting). Other technologies support multi-dimensional movement. To achieve this, existing adjustment mechanisms typically employ complex linkage structures or hinge components, which have the following drawbacks: multiple components increase overall size, require high assembly precision, and are prone to jamming or loosening over long-term use; the complex structure increases the probability of failure, reduces reliability, and increases production and maintenance costs.

[0003] Therefore, it is necessary to propose a new technical solution to overcome the shortcomings of existing technologies. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a seat armrest that achieves multi-dimensional adjustment with a simple and reliable structure.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a seat armrest, including an armrest support and an armrest body mounted on the armrest support, wherein the armrest body is provided with a multi-dimensional adjustment mechanism that allows the armrest body to be adjusted for front-to-back translation and left-to-right rotation relative to the armrest support, the multi-dimensional adjustment mechanism including:

[0006] The fastener is fixedly connected to the handrail support; and

[0007] A movable component, which is rotatably connected to the handrail support about a predetermined axis;

[0008] In the front-to-back direction, the movable component and the fixed component remain relatively fixed, and the handrail body translates relative to the movable component and the fixed component to achieve front-to-back translation adjustment of the handrail body;

[0009] In the left-right direction, the main body of the handrail and the movable component remain relatively fixed, and the main body of the handrail and the movable component rotate together relative to the fixed component to achieve left-right rotation adjustment of the main body of the handrail.

[0010] Optionally, the fixed member and the movable member cooperate to limit the left and right rotation angle of the movable member.

[0011] Optionally, the movable member has a limiting groove for accommodating the fixed member, the limiting groove being configured to allow the movable member to rotate relative to the fixed member within a preset angle range in the left-right direction.

[0012] Optionally, the limiting groove is provided with multiple gear protrusions, wherein the movable member rotates in the left and right direction to switch contact between different gear protrusions and the fixed member, thereby defining different rotation angle gears.

[0013] Optionally, the movable component includes an outer seat with a receiving groove and an inner seat disposed within the receiving groove, wherein the limiting groove is disposed on the inner seat; wherein the inner seat and the outer seat are relatively fixed in the front-back direction and relatively slidable in the left-right direction within the receiving groove.

[0014] Optionally, the handrail body includes a bottom shell and an upper shell covering the bottom shell, the upper shell and the bottom shell forming a receiving space for accommodating the fixed and movable parts.

[0015] Optionally, the bottom shell has a sliding groove extending in the front-rear direction, the handrail support includes a mounting member, the mounting member has a mounting post protruding through the sliding groove into the receiving space, the fixing member is fixedly connected to the mounting post, and the movable member and the bottom shell are clamped between the fixing member and the mounting member.

[0016] Optionally, the fastener has an anti-rotation engagement portion that engages with the mounting post to prevent the fastener from rotating relative to the mounting post.

[0017] Optionally, the armrest support includes a core rod and a sleeve that fit together, and a locking member connected to the core rod and the sleeve. The locking member has a switchable release position and a locked position. When the locking member is in the release position, the core rod and the sleeve can move relative to each other in the vertical direction to adjust the height of the seat armrest. When the locking member is in the locked position, the core rod and the sleeve are locked to each other.

[0018] This utility model also adopts the following technical solution: a seat, including a seat body for supporting the user and a base for supporting the seat body, wherein the seat body includes the seat armrests as described above.

[0019] The chair armrest and seat incorporating it provided by this utility model achieve forward and backward translation and left and right rotation adjustment of the armrest through a multi-dimensional adjustment mechanism that combines fixed and movable parts. Compared with existing multi-dimensional adjustment mechanisms that employ complex linkage structures or hinge components, the multi-dimensional adjustment mechanism of this utility model has advantages such as simple structure, fewer parts, and lower assembly precision requirements. Furthermore, due to its simple structure, it is less prone to jamming or loosening during long-term use, resulting in high reliability and low maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only involve some embodiments of this utility model, and are not intended to limit this utility model.

[0021] Figure 1 This is a perspective view of an embodiment of the seat of this utility model.

[0022] Figure 2 This is a three-dimensional assembly diagram of an embodiment of the seat armrest of this utility model.

[0023] Figure 3 This is a three-dimensional composite view of another embodiment of the seat armrest of this utility model.

[0024] Figure 4 This is a three-dimensional exploded view of an embodiment of the seat armrest of this utility model.

[0025] Figure 5 This is a three-dimensional exploded view of another embodiment of the seat armrest of this utility model.

[0026] Figure 6 This is a three-dimensional exploded view of the multi-dimensional adjustment mechanism in one embodiment of the seat armrest of this utility model.

[0027] Figure 7 This is a three-dimensional exploded view of the multi-dimensional adjustment mechanism in one embodiment of the seat armrest of this utility model from another perspective.

[0028] Figure 8 This is a partial structural diagram of the locking component and the core rod in one embodiment of the seat armrest of this utility model.

[0029] Figure 9 This is a cross-sectional view of one embodiment of the seat armrest of this utility model.

[0030] Figure 10 This is a diagram showing the armrest body in a rearward position in one embodiment of the seat armrest of this utility model.

[0031] Figure 11This is a diagram showing the armrest body in a forward position in one embodiment of the seat armrest of this utility model.

[0032] Figure 12 This is a diagram showing the state of the armrest body after it has been rotated in the left and right directions in one embodiment of the seat armrest of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Seat; 10. Seat body; 101. Seat section; 102. Backrest section; 103. Seat armrest; 104. Headrest section; 20. Base; 1. Armrest support; 11. Core rod; 110. Toothed hole; 12. Sleeve; 121. Mounting component; 122. Mounting post; 13. Locking component; 131. Holding protrusion; 132. Release notch; 2. Armrest body; 21. Bottom shell; 210. Slide groove; 22. Upper shell; 3. Multi-dimensional adjustment mechanism; 31. Fixing component; 311. Fixing hole; 312. Gear slot; 313. Anti-rotation mating part; 32. Moving part; 321. Outer seat; 3210. Receiving groove; 3211. Guide bar; 322. Inner seat; 3220. Limiting groove; 3221. Gear protrusion; 3222. Guide groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] Unless otherwise defined, the technical or scientific terms used in this patent document shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model patent specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising," "including," etc., mean that the element or object preceding "comprising" or "including" encompasses the element or object listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "far," and "near" are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. They are only for the convenience of describing this utility model 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 of this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0040] Please see Figures 1 to 12As shown, this utility model provides a seat armrest 103. The seat armrest 103 includes an armrest support 1 and an armrest body 2 mounted on the armrest support 1. The armrest body 2 is equipped with a multi-dimensional adjustment mechanism 3 that allows the armrest body 2 to be adjusted for forward and backward translation and left and right rotation relative to the armrest support 1. The multi-dimensional adjustment mechanism 3 includes a fixing member 31 fixedly connected to the armrest support 1 and a movable member 32 rotatably connected to the armrest support 1 about a set axis. Specifically, in the forward and backward direction, the movable member 32 and the fixing member 31 remain relatively fixed, and the armrest body 2 translates relative to the movable member 32 and the fixing member 31 to achieve forward and backward translation adjustment of the armrest body 2; in the left and right direction, the armrest body 2 and the movable member 32 remain relatively fixed, and the armrest body 2 and the movable member 32 rotate together relative to the fixing member 31 to achieve left and right rotation adjustment of the armrest body 2. The forward and backward and left and right directions are as follows... Figure 2 , 10 As shown in Figures 1 and 12, the orientation is determined when the user is normally seated on the chair 100.

[0041] The seat armrest 103 provided by this utility model achieves forward and backward translation and left and right rotation adjustment by employing a multi-dimensional adjustment mechanism 3 in which a fixed part 31 and a movable part 32 cooperate. Compared with the multi-dimensional adjustment mechanisms 3 of the prior art that use complex linkage structures or hinge components, the multi-dimensional adjustment mechanism 3 of this utility model has the advantages of simple structure, fewer parts, and lower assembly precision requirements. At the same time, due to its simple structure, it is not prone to jamming or loosening during long-term use, and has the advantages of high reliability and low maintenance cost.

[0042] Please see Figures 2 to 4 As shown, the armrest support 1 is a connecting component used to connect the seat armrest 103 to the seat body 10. Its upper end is connected to the armrest body 2, and its lower end is connected to the seat portion 101. The armrest support 1 is fixedly connected to a mounting member 121, which has a mounting post 122. The mounting post 122 can protrude into the armrest body 2 to connect with the multi-dimensional adjustment mechanism 3, thereby assembling the armrest body 2 onto the upper end of the armrest support 1. In this embodiment, the armrest support 1 can also be adjusted vertically. Details regarding its vertical adjustment will be provided later.

[0043] Please continue reading. Figures 2 to 4As shown, the armrest body 2 is a component that the user's arm directly contacts. In this embodiment, the armrest body 2 includes a bottom shell 21 and an upper shell 22 covering the bottom shell 21. The upper shell 22 and the bottom shell 21 form a receiving space for accommodating the multi-dimensional adjustment mechanism 3. The bottom shell 21 is the bottom structure of the armrest body 2, and its material can be a plastic material with certain strength and rigidity, such as PC or ABS plastic. The bottom of the bottom shell 21 has a sliding groove 210 extending in the front-back direction. The design of the sliding groove 210 allows the armrest body 2 to be adjusted relative to the armrest support 1 in the front-back direction. The upper shell 22 covers the bottom shell 21 and together with the bottom shell 21 forms the receiving space. The material of the upper shell 22 can be the same as or different from that of the bottom shell 21, but it should have certain strength and rigidity to ensure the overall stability of the armrest body 2. In addition, the armrest body 2 may further include a soft padding component, which can cover the surface of the upper shell 22 to improve the comfort of the user's arm contact. The padding can be made of one or more materials such as sponge, foam, and leather.

[0044] Please refer to this carefully. Figures 4 to 7 As shown, the multi-dimensional adjustment mechanism 3 is the core component for realizing the multi-dimensional adjustment of the seat armrest 103, and its structural design is directly related to the adjustment flexibility and stability of the seat armrest 103. In this embodiment, the multi-dimensional adjustment mechanism 3 includes a fixed component 31 and a movable component 32.

[0045] The fixing member 31 is fixedly connected to the mounting post 122 of the handrail support 1. The fixing member 31 has a fixing hole 311 for fixed connection with the mounting post 122. In this embodiment, the fixing member 31 can be locked to the mounting post 122 by passing a screw through the fixing hole 311. To maintain the relative fixation of the fixing member 31 and the mounting post 122, the fixing member 31 has an anti-rotation fitting part 313 that engages with the mounting post 122 to prevent relative rotation between the fixing member 31 and the mounting post 122. In this embodiment, the mounting post 122 is not cylindrical; it can be rhomboid, polygonal, or D-shaped, etc. The anti-rotation fitting part 313 is a groove that matches the shape of the mounting post 122. The two engage to prevent relative rotation, thereby maintaining the absolute fixation of the fixing member 31, thus limiting the rotation angle of the handrail body 2 when it rotates left or right. The fixing member 31 is also provided with a gear slot 312, which is used to cooperate with the gear protrusion 3221 on the movable member 32 to define different rotation angle gears.

[0046] The movable component 32 is rotatably connected to the mounting post 122 of the handrail support 1 about a predetermined axis. The predetermined axis is the central axis of the fixing hole 311 of the fixing component 31. The movable component 32 can rotate in the left-right direction about the central axis of the fixing hole 311. In this embodiment, the movable component 32 includes an outer seat 321 with a receiving groove 3210 and an inner seat 322 disposed in the receiving groove 3210. The outer seat 321 is the outer layer structure of the movable component 32, and the receiving groove 3210 is provided on the outer seat 321 for accommodating the inner seat 322. A guide bar 3211 is provided within the receiving groove 3210. The guide bar 3211 is used to slide with the guide groove 3222 on the inner seat 322 to achieve relative fixation of the inner seat 322 in the front-back direction and relative sliding in the left-right direction within the receiving groove 3210. Correspondingly, a guide groove 3222 is provided on the bottom surface of the inner seat 322, which is used to slide with the guide bar 3211 on the outer seat 321. Through the above structure, the inner seat 322 and the outer seat 321 are assembled with relative fixation in the front-back direction and relative sliding in the left-right direction. This ensures that even if there are deviations in the setting positions of the holes, grooves, and other structures used for assembly, complete assembly can still be guaranteed. This reduces the setting accuracy of the assembly structures on each component and lowers production costs. A limiting groove 3220 is provided on the top surface of the inner seat 322. The limiting groove 3220 is used to cooperate with the fixing member 31 to limit the left-right rotation angle of the moving member 32. The left and right rotation angle of the limiting movable component 32 can specifically include the limiting angle of the left and right rotation of the movable component 32, or it can include the limiting angle of the locking position of the movable component 32. In this embodiment, the fixing component 31 is assembled in the limiting groove 3220. When the armrest body 2 drives the movable component 32 to rotate until the inner side wall of the limiting groove 3220 contacts the fixing component 31, the left and right rotation limit position is reached. In this embodiment, the limiting groove 3220 is also provided with a plurality of locking protrusions 3221. The locking protrusions 3221 are used to switch contact with the locking grooves 312 on the fixing component 31 to limit different rotation angles. In this embodiment, the plurality of locking protrusions 3221 are arranged in a wave shape on the front and rear walls of the limiting groove 3220. The fixing component 31 is spindle-shaped, and its two ends are provided with locking grooves 312 that cooperate with the locking protrusions 3221. The locking grooves 312 cooperate with the locking protrusions 3221 to keep the armrest body 2 in a preset position. When shifting gears, the gear slot 312 will slide relative to the current gear protrusion 3221 to engage with the adjacent gear protrusion 3221, thus producing a shifting feel and improving the user experience.

[0047] Please see Figure 3 , Figure 7 and Figure 8As shown, during assembly, the bottom shell 21 of the handrail body 2 is placed on the mounting part 121 of the handrail support 1 from top to bottom, so that the mounting post 122 passes through the sliding groove 210 on the bottom shell 21; the outer seat 321 of the movable part 32 is placed inside the bottom shell 21 from top to bottom, and the inner seat 322 of the movable part 32 is placed in the receiving groove 3210 of the outer seat 321, so that the mounting post 122 passes through the through holes on the outer seat 321 and the inner seat 322; then, the fixing part 31 is inserted into the mounting post 122 from top to bottom and locked onto the mounting post 122 by screws passing through the fixing hole 311, so that the movable part 32 and the bottom shell 21 are clamped between the fixing part 31 and the mounting part 121; finally, the upper shell 22 of the handrail body 2 is covered and fixed to the bottom shell 21, thus completing the assembly.

[0048] Please see Figure 10 and Figure 11 As shown, when translational adjustment in the front-to-back direction is required during use, the user can apply external force to move the handrail body 2 back and forth through the sliding groove 210 on the bottom shell 21. During this process, since the moving part 32 and the fixed part 31 remain relatively fixed to the handrail support 1 in the front-to-back direction, they remain stationary, and only the handrail body 2 slides back and forth to achieve the translational adjustment of the handrail body 2.

[0049] Please see Figure 10 and Figure 12 As shown, when rotational adjustment is required in the left and right directions during use, the user can apply external force to rotate the armrest body 2 and the movable part 32 together around a set axis. During rotation, the stop protrusion 3221 on the movable part 32 will switch contact with the stop groove 312 on the fixed part 31, thereby defining different rotation angle stops. When the stop protrusion 3221 engages with the stop groove 312, the armrest body 2 and the movable part 32 will be fixed at the corresponding rotation angle stop. When it is necessary to switch stops, the user can continue to apply external force to rotate the armrest body 2 and the movable part 32, so that the stop groove 312 engages with the next stop protrusion 3221, thereby realizing the left and right rotational adjustment of the armrest body 2.

[0050] Furthermore, in this embodiment, the armrest support 1 can also be adjusted vertically. For details, please refer to [link / reference needed]. Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the handrail support 1 includes a core rod 11 and a sleeve 12 that are fitted together, and a locking member 13 connected to the core rod 11 and the sleeve 12.

[0051] The core rod 11 is a rod-shaped structure extending vertically, with its lower end fixedly connected to the seat body 10 and its upper end fitted onto the sleeve 12. The core rod 11 can be a hollow tube, and it has multiple toothed holes 110 arranged vertically. These toothed holes 110 are used to engage with the locking element 13 to lock and release the core rod 11 and the sleeve 12 in the vertical direction. The core rod 11 can be made of a high-strength, wear-resistant metal, such as aluminum alloy or stainless steel, to ensure it can withstand large loads during use without easily deforming.

[0052] The sleeve 12 is fitted onto the outside of the core rod 11 and can move vertically along the core rod 11. The sleeve 12 can be made of metal or high-strength plastic to ensure good stability and wear resistance in the fit with the core rod 11. In this embodiment, the core rod 11 remains fixed, and the sleeve 12 moves vertically relative to the core rod 11. The mounting member 121 is fixed to the upper end of the sleeve 12 for installation with the handrail body 2 and the multi-dimensional adjustment mechanism 3.

[0053] The locking member 13 is used to control the relative movement of the core rod 11 and the sleeve 12 in the vertical direction. The locking member 13 has a switchable release position and a locking position. Specifically, the locking member 13 includes a button part, an insertion rod, and an elastic reset member. The insertion rod is provided with a retaining protrusion 131 and a release notch 132. Under the action of the elastic reset member, the locking member 13 maintains the retaining protrusion 131 in a state that engages with the toothed hole 110 on the core rod 11, thereby locking the core rod 11 and the sleeve 12. When it is necessary to adjust the height of the seat armrest 103, press the button part of the locking member 13 to move the insertion rod to the position where the release notch 132 engages with the toothed hole 110. At this time, the lock between the core rod 11 and the sleeve 12 is released, and the sleeve 12 can move up and down along the core rod 11, thereby realizing the height adjustment of the seat armrest 103. After adjustment, release the pressure on the locking member 13. The locking member 13 returns to the locked position under the action of the elastic reset member, thereby locking the armrest support 1 in the adjusted position. The elastic reset member can specifically be a spring.

[0054] Please refer to it again. Figure 1 As shown, this utility model also provides a seat 100 having the aforementioned armrest 103. The seat 100 includes a seat body 10 for supporting the user and a base 20 for supporting the seat body 10.

[0055] The main body 10 of the seat includes a seat 101, a backrest 102, armrests 103, and a headrest 104. The seat 101 is for the user's buttocks to sit on; the backrest 102 is for the user's back to lean against while sitting on the seat 100; the armrests 103 are located on both sides of the seat 101 and are used to support the user's upper arms; the headrest 104 is located above the backrest 102 and is used to support the user's head and neck.

[0056] The base 20 supports the seat body 10. The base 20 can be made of a sturdy and durable material, such as metal or high-strength plastic. The shape and size of the base 20 can be designed according to actual needs to ensure that the seat 100 can be stably placed on the ground during use. Furthermore, a mechanism can be installed inside the base 20, which can output rhythmic vibrations to the seat body 10 to achieve a massage function. That is, the seat 100 can be a massage chair.

[0057] Through the above specific embodiments, it can be seen that the seat armrest 103 and seat 100 of this utility model achieve adjustment in multiple directions through the multi-dimensional adjustment mechanism 3, allowing users to adjust the position and angle of the seat armrest 103 according to their own needs, thereby obtaining a more comfortable riding experience and meeting the different needs of different users for the position of the seat armrest 103. During the adjustment process, only a small external force is needed to adjust the seat armrest 103, making the operation flexible and convenient. By using the multi-dimensional adjustment mechanism 3 with the cooperation of the fixed part 31 and the movable part 32, the seat armrest 103 can be adjusted in the front-back and left-right directions. Compared with the multi-dimensional adjustment mechanisms of the prior art that use complex linkage structures or hinge components, the multi-dimensional adjustment mechanism 3 of this utility model has the advantages of simple structure, fewer parts, and lower assembly precision requirements. Due to its simple structure, it is not easy to jam or loosen during long-term use, thus improving the reliability of the seat armrest 103. In addition, since the seat armrest and seat with it of this utility model adopt a simple structural design and fewer parts, their production cost is relatively low. At the same time, due to the simple structure and high reliability, the later maintenance cost is also low. This gives the seat armrest 103 and seat 100 with it of this utility model a great advantage in market competition.

[0058] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A seat armrest, comprising an armrest support and an armrest body mounted on the armrest support, wherein the armrest body is provided with a multi-dimensional adjustment mechanism that allows the armrest body to be adjusted for forward and backward translation and left and right rotation relative to the armrest support, characterized in that, The multidimensional adjustment mechanism includes: The fastener is fixedly connected to the handrail support; and A movable component, which is rotatably connected to the handrail support about a predetermined axis; In the front-to-back direction, the movable component and the fixed component remain relatively fixed, and the handrail body translates relative to the movable component and the fixed component to achieve front-to-back translation adjustment of the handrail body; In the left-right direction, the main body of the handrail and the movable component remain relatively fixed, and the main body of the handrail and the movable component rotate together relative to the fixed component to achieve left-right rotation adjustment of the main body of the handrail.

2. The armrest of the seat as described in claim 1, characterized in that, The fixed component cooperates with the movable component to limit the left and right rotation angle of the movable component.

3. The armrest of the seat as described in claim 2, characterized in that, The movable component has a limiting groove for accommodating the fixed component, the limiting groove being configured to allow the movable component to rotate relative to the fixed component within a preset angle range in the left-right direction.

4. The armrest of the seat as described in claim 3, characterized in that, The limiting groove is provided with multiple gear protrusions, wherein the movable part rotates in the left and right direction so that different gear protrusions switch contact with the fixed part to limit different rotation angle gears.

5. The armrest of the seat as described in claim 3, characterized in that, The movable component includes an outer seat with a receiving groove and an inner seat disposed within the receiving groove, wherein the limiting groove is disposed on the inner seat; wherein the inner seat and the outer seat are relatively fixed in the front-back direction and relatively slidable in the left-right direction within the receiving groove.

6. The armrest of the seat as described in any one of claims 1 to 5, characterized in that, The handrail body includes a bottom shell and an upper shell covering the bottom shell, the upper shell and the bottom shell forming a receiving space to accommodate the fixed and movable parts.

7. The armrest of the seat as described in claim 6, characterized in that, The bottom shell has a sliding groove extending in the front-to-back direction. The handrail support includes a mounting member. The mounting member has a mounting post that protrudes through the sliding groove into the receiving space. The fixing member is fixedly connected to the mounting post. The movable member and the bottom shell are clamped between the fixing member and the mounting member.

8. The armrest of the seat as described in claim 7, characterized in that, The fastener has an anti-rotation engagement portion that plugs into the mounting post to prevent the fastener from rotating relative to the mounting post.

9. The armrest of the seat as described in any one of claims 1 to 5, characterized in that, The armrest support includes a core rod and a sleeve that fit together, and a locking member connected to the core rod and the sleeve. The locking member has a switchable release position and a locked position. When the locking member is in the release position, the core rod and the sleeve can move relative to each other in the vertical direction to adjust the height of the seat armrest. When the locking member is in the locked position, the core rod and the sleeve are locked to each other.

10. A seat, comprising a seat body for supporting a user and a base for supporting the seat body, characterized in that, The seat body includes the seat armrest as described in any one of claims 1 to 9.

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