A swivel chair armrest that can be adjusted in multiple directions

Abstract

This utility model discloses a multi-directional adjustable swivel chair armrest, comprising: an armrest body with a fixed seat on its left side; and a ball sleeve, which is embedded and fixed to the right side of the fixed seat. The right side of the ball sleeve is open, and multiple arc-shaped slots are evenly spaced along the entire inner side formed by the front inner wall, rear inner wall, and left inner wall of the ball sleeve. This utility model, through a series of structures, facilitates convenient and quick multi-directional tilt and adjustment of the armrest body by simple pressing and rotation in any direction. This allows for large-area support for different sitting postures and forearm angles, reducing arm pain caused by concentrated support points. Furthermore, the multi-directional adjustable design allows for outward rotation of the two armrest bodies of this device on the swivel chair for larger individuals, preventing them from being clamped. This enhances the flexibility and ease of use.

Description

Technical Field

[0001] This utility model relates to the field of swivel chair armrest technology, specifically a swivel chair armrest that can be adjusted in multiple directions. Background Technology

[0002] Most existing swivel chair armrests are adjusted by tilting and rotating up and down to accommodate different arm support heights in different sitting postures. However, in actual use, due to differences in user body shape, and when resting while sitting, the forearms are often resting on the armrests in a naturally relaxed state, tilting inwards or outwards. In this case, a single horizontally positioned armrest cannot provide overall support and lacks a mechanism for multi-directional adjustment of the armrest direction. This can easily lead to arm pain due to concentrated support points and poor flexibility of use. In view of this, this application proposes a multi-directional adjustable swivel chair armrest to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a multi-directional adjustable swivel chair armrest to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a multi-directional adjustable swivel chair armrest, comprising:

[0005] The main body of the handrail has a fixed base on its left side;

[0006] The ball sleeve is fitted and fixed on the right side of the fixing seat. The right side of the ball sleeve is set as an opening. Multiple arc-shaped slots are equally spaced on the entire inner side formed by the front inner wall, the rear inner wall and the left inner wall of the ball sleeve.

[0007] The omnidirectional ball is movably fitted inside the ball sleeve, and a rectangular through hole is opened on the right side of the omnidirectional ball;

[0008] A rectangular tube is connected inside a rectangular perforation and fixedly connected to the left end of the handrail body. The right end of the rectangular tube is set as a sealing structure. The universal ball is used to fit with the ball sleeve in a spherical manner, which can form a flexible multi-directional rotation effect of the universal ball, thereby facilitating the flexible multi-directional rotation and tilting of the rectangular tube and the handrail body in the up, down, forward, and backward directions.

[0009] The spring clip assembly is installed inside a rectangular tube and is movably clipped into one of multiple arc-shaped slots;

[0010] The limiting component is embedded and fixed on the bottom right side of the handrail body and makes movable contact with the right end of the spring clip assembly. The limiting component is used to block and restrict the spring clip assembly, and to easily release the limiting state of the spring clip assembly when pressed upward. The spring clip assembly is used to perform self-locking positioning after tilting and rotating the handrail body and rectangular tube in the unlocked state, and to perform stable locking in the limiting state.

[0011] Preferably, the rectangular tube is bonded to the rectangular perforation with strong adhesive.

[0012] Preferably, the rectangular tube is detachably connected inside the rectangular perforation.

[0013] Preferably, the outer side of the rectangular tube is in movable contact with the inner wall of the rectangular perforation, and a rectangular sleeve is fixedly connected to the right side of the universal ball. The rectangular sleeve is movably fitted on the outer side of the rectangular tube, and the top and bottom of the rectangular tube are tightly fitted with internal hex bolts. The top and bottom of the rectangular sleeve are provided with threaded holes, and the threaded holes are threadedly connected to the corresponding internal hex bolts.

[0014] Preferably, the spring-loaded mounting assembly includes a rectangular slider, a stainless steel ball bearing, a first spring, and a top rod. The rectangular slider is slidably fitted inside a rectangular tube. The left side of the rectangular slider is configured with an arc-shaped structure. The stainless steel ball bearing is movably embedded in the left side of the rectangular slider and fits into one of the multiple arc-shaped slots. The two ends of the first spring are in movable contact with the right side of the rectangular slider and the right inner wall of the rectangular tube, respectively. The top rod is fixedly connected to the right side of the rectangular slider. The rectangular tube and the handrail body are both movably fitted onto the top rod.

[0015] Preferably, the limiting assembly includes a fixed tube, a support block, a second spring, and a counterweight sleeve. The fixed tube is embedded and fixed to the bottom right side of the handrail body. The support block is fixedly connected to the upper inner side of the fixed tube. The counterweight sleeve is slidably fitted inside the fixed tube. The left side of the counterweight sleeve is set as an opening. The second spring is fixedly connected between the bottom of the support block and the top of the counterweight sleeve. A movable through hole is opened on the left side of the fixed tube. The right end of the top rod movably passes through the movable through hole and movably contacts the top left side of the counterweight sleeve. The right end of the top rod is set as an arc-shaped structure.

[0016] Preferably, the outer side of the omnidirectional ball is bonded with a damping rubber sheet, the outer side of the damping rubber sheet is in contact with the inner wall of the ball sleeve, and a connecting hole connected to a rectangular through hole is provided on the left side of the damping rubber sheet.

[0017] Preferably, a limiting groove is provided on the right side of the counterweight sleeve, and a limiting block that is slidably connected to the limiting groove is embedded and fixed on the right side of the fixing tube.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. Through the combination of the fixed seat, armrest body, ball sleeve, universal ball, arc-shaped slot, rectangular tube, spring clip assembly and stop assembly, the armrest body can be easily and quickly tilted and rotated in multiple directions by simple pressing and rotation in any direction. This facilitates large-area support for different sitting postures and forearm angles, reducing arm pressure and soreness caused by concentrated support points.

[0020] Furthermore, by utilizing the multi-directional rotation adjustment method, the two armrests of this device installed on the swivel chair can be rotated outwards to adjust the size of the person, so as to avoid the phenomenon of being stuck on the person, making it convenient for the person to use flexibly and improving the flexibility of use.

[0021] 2. By using a rectangular sleeve, hexagonal socket head cap screw, and threaded hole in a different configuration, the rectangular tube can be disassembled and removed to allow the rectangular slider to be taken out and the first spring to be replaced. This allows the first spring to be disassembled and replaced separately when it becomes fatigued after prolonged use and can no longer effectively drive the rectangular slider to return to the left, thus improving its service life and reducing the cost of replacement parts.

[0022] This utility model features a series of structures that allow for convenient and quick multi-directional tilt and adjustment of the armrest body through simple pressing and rotation in any direction. This facilitates large-area support for different sitting postures and forearm angles, reducing arm pressure and soreness caused by concentrated support points. Furthermore, the multi-directional adjustment allows for outward rotation of the two armrest bodies installed on the swivel chair for larger individuals, preventing them from being trapped. This enhances the flexibility and ease of use for users. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a multi-directional adjustable swivel chair armrest according to Embodiment 1 of this utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below;

[0025] Figure 3 This is a schematic diagram of the front cross-sectional structure of a multi-directional adjustable swivel chair armrest according to Embodiment 1 of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of a multi-directional adjustable swivel chair armrest according to Embodiment 2 of this utility model;

[0027] Figure 5 This is a front sectional view of the armrest of a swivel chair that can be adjusted in multiple directions, as proposed in Embodiment 2 of this utility model.

[0028] In the diagram: 1. Fixed base; 101. Handrail body; 2. Ball sleeve; 201. Arc-shaped groove; 202. Universal ball; 203. Damping rubber; 204. Rectangular sleeve; 205. Socket head bolt; 3. Rectangular tube; 301. Rectangular slider; 302. Stainless steel ball; 303. First spring; 304. Top rod; 4. Fixed tube; 401. Support block; 402. Second spring; 403. Counterweight sleeve. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] like Figures 1 to 3 As shown in the figure, the multi-directional adjustable swivel chair armrest proposed in this embodiment includes:

[0032] The armrest body 101 has a fixing seat 1 on its left side; the front side of the fixing seat 1 has two bolt mounting holes for people to install and fix the fixing seat 1 to the side of the swivel chair by external bolts.

[0033] The ball sleeve 2 is fitted and fixed on the right side of the fixing seat 1. The right side of the ball sleeve 2 is set as an opening. Multiple arc-shaped slots 201 are equally spaced on the entire inner side formed by the front inner wall, the rear inner wall and the left inner wall of the ball sleeve 2.

[0034] The omnidirectional ball 202 is movably fitted inside the ball sleeve 2. A rectangular perforation is provided on the right side of the omnidirectional ball 202. A damping rubber 203 is bonded and covered on the outside of the omnidirectional ball 202. The outside of the damping rubber 203 is in movable contact with the inner wall of the ball sleeve 2. A connecting hole connected to the rectangular perforation is provided on the left side of the damping rubber. The damping rubber provides an auxiliary damping effect between the outside of the omnidirectional ball 202 and the inside of the ball sleeve 2.

[0035] A rectangular tube 3 is connected inside a rectangular perforation and fixedly connected to the left end of the handrail body 101. The right end of the rectangular tube 3 is set as a sealing structure. The universal ball 202 is used to fit spherically with the ball sleeve 2, which can form a flexible multi-directional rotation effect of the universal ball 202, so as to facilitate the flexible multi-directional rotation and tilting of the rectangular tube 3 and the handrail body 101 in the up, down, forward and backward directions.

[0036] The spring clip assembly is installed inside the rectangular tube 3 and is movably clipped into one of the multiple arc-shaped slots 201;

[0037] The limiting component is embedded and fixed on the bottom right side of the armrest body 101 and makes movable contact with the right end of the spring clip assembly. The limiting component is used to block and limit the spring clip assembly, and to conveniently release the limiting state of the spring clip assembly when pressed upward. The spring clip assembly is used to perform self-locking positioning work after tilting and rotating the armrest body 101 and the rectangular tube 3 in the unlocked state, and to perform stable locking work in the limiting state.

[0038] Furthermore, the rectangular tube 3 is bonded to the rectangular perforation with strong adhesive.

[0039] Furthermore, such as Figure 3 As shown, the spring clip assembly includes a rectangular slider 301, a stainless steel ball bearing 302, a first spring 303, and a push rod 304. The rectangular slider 301 is slidably sleeved inside the rectangular tube 3. The left side of the rectangular slider 301 is set with an arc-shaped structure. The stainless steel ball bearing 302 is movably embedded in the left side of the rectangular slider 301 and is movably clipped in one of the multiple arc-shaped slots 201. The two ends of the first spring 303 are in movable contact with the right side of the rectangular slider 301 and the right inner wall of the rectangular tube 3, respectively. The push rod 304 is fixedly connected to the right side of the rectangular slider 301. The rectangular tube 3 and the handrail body 101 are both movably sleeved on the push rod 304.

[0040] In this embodiment, a transverse through hole is provided at the right end of the rectangular tube 3 and the left end of the handrail body 101. The inner wall of the transverse through hole is in contact with the outer side of the top rod 304, so as to allow the top rod 304 to pass through.

[0041] In this embodiment, through the cooperation of rectangular slider 301, stainless steel ball bearing 302, first spring 303, and push rod 304, when the push rod 304 is unobstructed, and the armrest body 101 is rotated so that the universal ball bearing 202 rotates within the ball sleeve 2 via the rectangular tube 3, the rectangular tube 3 rotates, causing the rectangular slider 301 to rotate, which in turn causes the stainless steel ball bearing 302 to rotate. The rotating stainless steel ball bearing 302 presses against the arc-shaped surface of the corresponding arc-shaped groove 201. Under this pressing force, combined with the rotatable nature of the stainless steel ball bearing 302, the stainless steel ball bearing 302 moves to the right, causing the rectangular slider 301 to move to the right. The rectangular slider 301 then causes the push rod 304 to move to the right, compressing the first spring 303. When the stainless steel ball bearing 302 rotates to align with other arc-shaped grooves 201, the spring force of the compressed first spring 303 causes the rectangular slider 301 and push rod 304 to move back to the left. Upon reset, the rectangular slider 301 drives the stainless steel ball 302 to the left and engages it in the aligned arc-shaped slot 201. The same motion occurs when rotating again. Upon further compression and adjustment to the next arc-shaped slot 201, automatic springback engages. This process continues in sequence. Multiple arc-shaped slots 201 are evenly spaced along the entire inner side of the ball sleeve 2, formed by the front, rear, and left inner walls. This provides a base for engagement in multiple directions (up, down, front, and back), facilitating flexible multi-directional rotation, tilting, and self-locking of the armrest body 101. This improves adjustment flexibility. Furthermore, when the right end of the top rod 304 is blocked, its rightward movement is eliminated, preventing the stainless steel ball 302 from displacing and unlocking under pressure. Consequently, automatic rotation does not occur when the hand is under pressure on the armrest body 101, ensuring stability during hand support.

[0042] Furthermore, such as Figure 3 As shown, the limiting assembly includes a fixed tube 4, a support block 401, a second spring 402, and a counterweight sleeve 403. The fixed tube 4 is embedded and fixed on the bottom right side of the handrail body 101. The support block 401 is fixedly connected to the upper inner side of the fixed tube 4. The counterweight sleeve 403 is slidably sleeved inside the fixed tube 4. The left side of the counterweight sleeve 403 is set as an opening. The second spring 402 is fixedly connected between the bottom of the support block 401 and the top of the counterweight sleeve 403. A movable through hole is opened on the left side of the fixed tube 4. The right end of the top rod 304 moves through the movable through hole and makes movable contact with the top left side of the counterweight sleeve 403. The right end of the top rod 304 is set as an arc-shaped structure.

[0043] In this embodiment, a limiting groove is provided on the right side of the counterweight sleeve 403, and a limiting block that is slidably connected to the limiting groove is embedded and fixed on the right side of the fixing tube 4, which plays the role of limiting and preventing the counterweight sleeve 403 from falling off; wherein the bottom right side of the handrail body 101 is provided with an inserting hole that is fixedly connected to the outside of the fixing tube 4.

[0044] In this embodiment, the fixed tube 4, support block 401, second spring 402, and counterweight sleeve 403 work together to limit the right end of the push rod 304 by using the top left side of the counterweight sleeve 403, thereby eliminating the space for the push rod 304 to move to the right. This prevents the stainless steel ball bearing 302 from displacing to the right under pressure to unlock. When it is necessary to release the limit, simply press the counterweight sleeve 403 upwards with your finger. The counterweight sleeve 403 slides upwards within the fixed tube 4 and compresses the second spring 402. The solid position of the top left side of the counterweight sleeve 403 moves towards... The upper part is offset from the right end of the top rod 304, thereby releasing the obstruction of the right end of the top rod 304 and providing the conditions for it to move to the right. After subsequent adjustment and re-locking, the pressing pressure on the counterweight sleeve 403 is released. The counterweight sleeve 403 itself is used in conjunction with the elastic force of the second spring 402 in the compressed state to drive the counterweight sleeve 403 to move downward and reset, thereby blocking the right end of the top rod 304 again, so that the stainless steel ball 302 cannot move to the right and perform stable locking and positioning work, thereby achieving stable blocking after adjustment to prevent the handrail body 101 from rotating.

[0045] It should be noted that ball sleeve 2, universal ball 202 and counterweight stop sleeve 403 are all made of stainless steel. The advantages of stainless steel, such as high hardness, high wear resistance and good maintenance-free effect, are utilized to ensure long-term connection stability. In addition, ball sleeve 2 is formed by welding two hemispherical sleeves together.

[0046] This embodiment allows for convenient and quick multi-directional tilt and rotation adjustment of the armrest body 101 through simple pressing and rotation in any direction. This facilitates large-area support for different sitting postures and forearm angles, reducing arm pressure and soreness caused by concentrated support points. Furthermore, the multi-directional rotation adjustment allows for outward rotation of the two armrest bodies 101 installed on the swivel chair for larger individuals, preventing them from being clamped. This enhances the flexibility and ease of use for users.

[0047] The usage method of this embodiment is as follows: When using the multi-directional adjustable swivel chair armrest, to adjust the direction of the armrest body 101, press the counterweight sleeve 403 upwards with your finger. The counterweight sleeve 403 slides upwards within the fixed tube 4 and compresses the second spring 402. The top left solid position of the counterweight sleeve 403 is offset upwards from the right end of the top rod 304, thereby releasing the obstruction of the right end of the top rod 304 and providing the condition for it to move to the right. At this time, the armrest body 101 can be rotated in the direction that needs support. The rectangular tube 3 drives the universal ball 202 to rotate within the ball sleeve 2. When the rectangular tube 3 rotates, it drives the stainless steel ball 302 to rotate through the rectangular slider 301. When the stainless steel ball 302 rotates, it engages the corresponding arc-shaped locking mechanism. The arc-shaped surface of groove 201 is pressed, and the stainless steel ball 302 can rotate under the pressing force. Under the pressing force, the stainless steel ball 302 moves to the right, driving the rectangular slider 301 to move to the right. The rectangular slider 301 drives the push rod 304 to move to the right and compresses the first spring 303. When the stainless steel ball 302 rotates to align with other arc-shaped grooves 201, the elastic force of the compressed first spring 303 drives the rectangular slider 301 and the push rod 304 to move back to the left to reset. The rectangular slider 301 drives the stainless steel ball 302 to the left to engage with the aligned arc-shaped groove 201. When rotating again, the same movement is performed, and the ball is pressed, separated, and rotated to the next arc-shaped groove 201. The automatic rebound locking mechanism is activated, and so on. Multiple arc-shaped slots 201 are evenly spaced along the entire inner side of the ball sleeve 2, formed by the front, rear, and left inner walls. This provides a locking foundation in multiple directions (up, down, front, and back). Combined with the spherical fit of the universal ball 202 and the ball sleeve 2, the universal ball 202 can rotate flexibly in multiple directions, facilitating the flexible rotation and tilting of the rectangular tube 3 and the handrail body 101 in multiple directions. After proper adjustment, the pressure on the counterweight stop 403 is released. The counterweight stop 403, under its own weight and the elastic force of the compressed second spring 402, moves downwards to reset, thus again limiting the right end of the top rod 304. The stainless steel ball bearing 302 is fixed in place and cannot move to the right, ensuring stability when supporting the hand. This prevents the armrest body 101 from rotating after adjustment. It allows for convenient and quick multi-directional tilt and rotation adjustment of the armrest body 101 through simple pressing and rotation in any direction. This facilitates large-area support for different sitting postures and forearm angles, reducing arm pressure and soreness caused by concentrated support points. Furthermore, the multi-directional rotation adjustment means that for larger individuals, the two armrest bodies 101 of this device can be rotated outwards to avoid clamping, making it more flexible and convenient to use.

[0048] Example 2

[0049] like Figure 4-5 As shown, this embodiment differs from Embodiment 1 in that: the rectangular tube 3 is detachably connected to the rectangular through hole, wherein the outer side of the rectangular tube 3 is in movable contact with the inner wall of the rectangular through hole, a rectangular sleeve 204 is fixedly connected to the right side of the universal ball 202, the rectangular sleeve 204 is movably sleeved on the outer side of the rectangular tube 3, and the top and bottom of the rectangular tube 3 are tightly contacted with hexagonal socket bolts 205. The top and bottom of the rectangular sleeve 204 are provided with threaded holes, and the threaded holes are threadedly connected to the corresponding hexagonal socket bolts 205.

[0050] The rectangular sleeve 204, hexagon socket bolts 205, and threaded holes are designed to engage. The rectangular sleeve 204 is used to hold and position the rectangular tube 3, while the two hexagon socket bolts 205 are used to clamp and lock the rectangular tube 3. When the hexagon socket bolts 205 are turned in the opposite direction using a hex wrench, they rotate within their corresponding threaded holes and separate from the rectangular tube 3, releasing the locking mechanism. The rectangular tube 3 can then be pulled out to the right, and then the rectangular slider 301 and push rod 304 can be pulled out to the left from the rectangular tube 3, allowing the first spring 30 to be directly engaged. 3. Removal and replacement: When the first spring 303 becomes fatigued after prolonged use and can no longer effectively drive the rectangular slider 301 to reset to the left, it can be disassembled and replaced separately, improving its service life and reducing subsequent replacement costs. In addition, regarding the application of the second spring 402, since the counterweight sleeve 403 will also move down and reset due to its own weight, and the second spring 402 is located above and will not affect the downward movement and reset of the counterweight sleeve 403 due to elastic fatigue, the second spring 402 does not need to be replaced in the future. Therefore, only the first spring 303 needs to be replaced in the future.

[0051] In this embodiment, the rectangular tube 3 can be disassembled and removed so that the rectangular slider 301 can be taken out and the first spring 303 can be replaced. This allows the first spring 303 to be disassembled and replaced separately when it becomes fatigued after long-term use and can no longer effectively drive the rectangular slider 301 to reset to the left, thus improving its service life and reducing the cost of replacement parts.

[0052] The usage method of this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: Utilizing the rectangular sleeve 204, the internal hex bolts 205, and the threaded holes, the rectangular sleeve 204 is used to position the rectangular tube 3, and the two internal hex bolts 205 are used to clamp and lock the rectangular tube 3. Subsequently, when the internal hex bolts 205 are rotated in the opposite direction using a hex wrench, the internal hex bolts 205 rotate within the corresponding threaded holes and separate from the rectangular tube 3, releasing the locking state of the rectangular tube 3. The rectangular tube 3 can then be pulled out to the right, and then the rectangular slider 301 and the push rod 304 can be moved to the left from the rectangular tube 3. By pulling out tube 3, the first spring 303 can be directly removed and replaced. This allows for individual replacement of the first spring 303 when it becomes fatigued and unable to effectively drive the rectangular slider 301 to the left for a prolonged period of use, thus extending its service life and reducing replacement costs. Regarding the second spring 402, since the counterweight sleeve 403 will also move downwards and reset due to its own weight, and the second spring 402 is located above and will not be affected by fatigue in the downward reset of the counterweight sleeve 403, the second spring 402 does not need to be replaced. Therefore, only the first spring 303 needs to be replaced.

[0053] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A swivel chair armrest that is adjustable in multiple directions, comprising an armrest body (101), characterized in that: include: The main body of the handrail (101) has a fixed seat (1) on its left side; The ball sleeve (2) is fitted and fixed on the right side of the fixing seat (1). The right side of the ball sleeve (2) is set as an opening. The entire inner side formed by the front inner wall, the rear inner wall and the left inner wall of the ball sleeve (2) is provided with multiple arc-shaped slots (201) at equal intervals. The universal ball (202) is movably fitted inside the ball sleeve (2), and a rectangular through hole is provided on the right side of the universal ball (202); A rectangular tube (3) is connected inside a rectangular perforation and fixedly connected to the left end of the handrail body (101). The right end of the rectangular tube (3) is set as a sealing structure. The spring clip assembly is installed inside the rectangular tube (3) and is movably clipped into one of the multiple arc-shaped slots (201); The limiting component is embedded and fixed on the bottom right side of the armrest body (101) and makes movable contact with the right end of the spring clip assembly.

2. The multi-directional adjustable swivel chair armrest according to claim 1, characterized in that: The rectangular tube (3) is bonded to the rectangular perforation by strong adhesive.

3. The multi-directional adjustable swivel chair armrest according to claim 1, characterized in that: The rectangular tube (3) is detachably connected inside the rectangular perforation.

4. The multi-directional adjustable swivel chair armrest according to claim 3, characterized in that: The outer side of the rectangular tube (3) is in contact with the inner wall of the rectangular perforation. A rectangular sleeve (204) is fixedly connected to the right side of the universal ball (202). The rectangular sleeve (204) is movably sleeved on the outer side of the rectangular tube (3). The top and bottom of the rectangular tube (3) are tightly contacted with hexagonal bolts (205). The top and bottom of the rectangular sleeve (204) are provided with threaded holes, which are threadedly connected to the corresponding hexagonal bolts (205).

5. The multi-directional adjustable swivel chair armrest according to claim 1, characterized in that: The spring clip assembly includes a rectangular slider (301), a stainless steel ball (302), a first spring (303), and a top rod (304). The rectangular slider (301) is slidably sleeved inside the rectangular tube (3). The left side of the rectangular slider (301) is set as an arc structure. The stainless steel ball (302) is movably embedded in the left side of the rectangular slider (301) and is movably clipped in one of the arc slots (201) among multiple arc slots (201). The two ends of the first spring (303) are in movable contact with the right side of the rectangular slider (301) and the right inner wall of the rectangular tube (3), respectively. The top rod (304) is fixedly connected to the right side of the rectangular slider (301). The rectangular tube (3) and the handrail body (101) are both movably sleeved on the top rod (304).

6. The multi-directional adjustable swivel chair armrest according to claim 5, characterized in that: The limiting assembly includes a fixed tube (4), a support block (401), a second spring (402), and a counterweight sleeve (403). The fixed tube (4) is embedded and fixed on the bottom right side of the handrail body (101). The support block (401) is fixedly connected to the upper inner side of the fixed tube (4). The counterweight sleeve (403) is slidably sleeved inside the fixed tube (4). The left side of the counterweight sleeve (403) is set as an opening. The second spring (402) is fixedly connected between the bottom of the support block (401) and the top of the counterweight sleeve (403). The left side of the fixed tube (4) is provided with a movable through hole. The right end of the top rod (304) moves through the movable through hole and makes movable contact with the top left side of the counterweight sleeve (403). The right end of the top rod (304) is set as an arc-shaped structure.

7. The multi-directional adjustable swivel chair armrest according to claim 1, characterized in that: The outer side of the omnidirectional ball (202) is covered with a damping rubber sheet (203), and the outer side of the damping rubber sheet (203) is in contact with the inner wall of the ball sleeve (2). A connecting hole connected to a rectangular through hole is provided on the left side of the damping rubber sheet.

8. The multi-directional adjustable swivel chair armrest according to claim 6, characterized in that: The counterweight sleeve (403) has a limiting groove on its right side, and the right side of the fixing tube (4) is fitted with a limiting block that is slidably connected to the limiting groove.

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