Easy-to-adjust universal seat support bracket

Abstract

This utility model discloses a universal seat support bracket that is easy to adjust flexibly, comprising: a support pole assembly, which includes two or more support rods connected vertically and capable of rotating back and forth to adjust the support angle; at least one clamping support assembly, which includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar, the clamping support components being used to support the human body; the crossbar is mounted on the support pole assembly and its vertical position is adjustable, and the two sets of clamping support components, or one set of clamping support components, can be adjusted horizontally relative to the crossbar to change the clamping width between the two sets of clamping support components; a bracket mounting assembly, which is adjustable in installation position for disassembly and fixing to the seat. Thus, this support bracket can be adapted to various types of seats (such as elderly chairs), providing auxiliary support for the human body, and its height, angle, and width can be flexibly adjusted to better accommodate users of different heights, body types, and weights, making its design more human-centered.

Description

Technical Field

[0001] This utility model relates to the field of seat support brackets, and in particular to a universal seat support bracket that is easy to adjust flexibly, which is mainly but not limited to being installed on elderly seats. Background Technology

[0002] refer to Figure 3 The seat 200 shown includes a seat body with legs 202, a seat, and a backrest 201. It typically also has armrests 203, which can provide support for the arms and act as barriers or protectors on either side of the seat. Under normal conditions, given a person's balance perception and adjustment abilities, core muscle control, joint stability and range of motion, neuromuscular coordination, and proprioceptive feedback, a person can sit stably in the chair regardless of whether there are armrests.

[0003] However, some groups are more prone to instability while sitting due to physical limitations or external factors: 1. Elderly individuals: Muscle loss weakens core strength, vestibular dysfunction affects balance, and joint degeneration reduces mobility, making them more susceptible to instability. 2. Patients in the recovery period, such as those recovering from surgery or injury, have difficulty maintaining a stable sitting posture due to muscle atrophy, nerve damage, or limited joint movement. 3. Patients with neurological diseases, such as Parkinson's disease or stroke sequelae, experience motor coordination disorders and muscle tremors, making it difficult to accurately control their balance. 4. Patients with musculoskeletal diseases, such as lumbar disc herniation or osteoporosis, experience pain while sitting, forcing them to frequently adjust their posture to relieve discomfort. 5. Pregnant women: Increased weight and a forward shift in the center of gravity during pregnancy alter the body's balance point, making them prone to instability. 6. A small number of people under psychological stress: Anxiety or tension can cause muscle tension and distraction, leading to involuntary swaying and exacerbating instability.

[0004] therefore, Figure 3 The standard chairs shown are not ideal for the elderly and other groups who have difficulty sitting due to physical limitations or external factors. To ensure stability, some people choose to have custom-made chairs made to their specific needs, but these are expensive and unaffordable for many.

[0005] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0006] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a universal seat support bracket that is easy to adjust flexibly. It can be adapted to various types of seats (such as elderly chairs) to provide auxiliary support for the human body. Moreover, the height, angle and width can be flexibly adjusted to better adapt to and support users of different heights, body types and weights. Its design is more humanized.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A universal seat support bracket that is easy to adjust flexibly includes:

[0009] The support pole assembly includes a support pole with two or more sections connected vertically and capable of rotating back and forth to adjust the support angle;

[0010] At least one clamping support assembly includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar. The clamping support components are used to support a human body. The crossbar is mounted on the support pole assembly and its vertical position is adjustable. The two sets of clamping support components or one set of clamping support components can be adjusted left and right relative to the crossbar to change the clamping width between the two sets of clamping support components.

[0011] The bracket mounting assembly has an adjustable mounting position for easy removal and fixation to the seat.

[0012] As a preferred embodiment, a telescopic rod is connected between the clamping support component and the crossbar. One end of the telescopic rod extends into the crossbar, and the other end is connected to the clamping support component. The telescopic rod is slidably disposed relative to the crossbar, and a telescopic locking component is provided on the crossbar to lock the position of the telescopic rod.

[0013] As a preferred embodiment, the telescopic locking component includes a first locking bolt, and a first locking screw hole is provided on the crossbar. The first locking bolt passes through the first locking screw hole and is threadedly connected to it. When the first locking bolt is rotated in the forward direction, the first locking bolt moves inward to abut against the telescopic rod. When the first locking bolt is rotated in the reverse direction, the first locking bolt moves outward to release the abutment and lock against the telescopic rod.

[0014] As a preferred embodiment, the clamping support assembly is defined as any one or more of the following: a hip clamping support assembly, a waist clamping support assembly, an upper arm clamping support assembly, and a head clamping support assembly.

[0015] As a preferred embodiment, the bracket mounting assembly includes a chair back clamping and fixing mechanism, which comprises two clamping and fixing plates arranged on opposite left and right sides; wherein:

[0016] Two or one of the clamping plates are mounted on the crossbar and can be adjusted left and right relative to the crossbar to change the clamping width between the two clamping plates;

[0017] Alternatively, the chair back clamping and fixing mechanism may further include an adjusting rod, on which two or one of the clamping and fixing plates are mounted and can be adjusted left and right relative to the adjusting rod to change the clamping width between the two clamping and fixing plates.

[0018] As a preferred embodiment, the crossbar is connected to a lifting adjustment block, which has a through hole extending vertically. A second locking screw hole, horizontally extending through the through hole, is located on the outer side of the lifting adjustment block. The lifting adjustment block is sleeved on the support rod, and a second locking bolt is provided on the outer side of the lifting adjustment block. The second locking bolt passes through the second locking screw hole and is threadedly connected to it. Rotating the second locking bolt forward causes it to move inward and press against the support rod; rotating the second locking bolt in the reverse direction causes it to move outward and release the locking mechanism on the support rod.

[0019] As a preferred embodiment, the support rod is provided in three sections, and the relative angle between two adjacent support rods can be adjusted by rotating back and forth; the upper section of the support rod is provided with two sets of clamping support components, namely an upper arm clamping support component and a head clamping support component; the middle section of the support rod is provided with one set of clamping support components, which is a hip clamping support component.

[0020] As a preferred embodiment, the bracket mounting assembly includes a chair leg clamping and fixing mechanism, which includes two chair leg fixing clips arranged on opposite sides. The chair leg fixing clips are used for detachable clamping and fixing to the chair legs. The lower end of the support pole assembly is connected to a chair leg connecting rod. The two chair leg fixing clips are installed on the chair leg connecting rod, and the position of the two chair leg fixing clips or one of the chair leg fixing clips relative to the chair leg connecting rod can be adjusted left and right.

[0021] As a preferred embodiment, the lower end of the support pole assembly is connected to a wheeled base frame. The wheeled base frame includes a base frame body and chair wheels installed at the bottom of the base frame body. The chair wheels are any one of swivel wheels, fixed casters, single-axis wheels, double-axis wheels, and locking wheels.

[0022] As a preferred option, it also includes:

[0023] An armrest support assembly is detachably fixed to the upper armrest of a seat to support the forearm and hand of a human. The armrest support assembly includes, from top to bottom, an armrest body, an armrest height adjustment mechanism, an armrest angle adjustment mechanism, and an armrest mounting base. The armrest body is mounted on the armrest height adjustment mechanism, which adjusts the height of the armrest body relative to the armrest mounting base. The armrest angle adjustment mechanism is connected between the armrest mounting base and the armrest height adjustment mechanism, and adjusts the angle of the armrest body relative to the armrest mounting base.

[0024] This utility model has significant advantages and beneficial effects compared with the prior art. Specifically, as can be seen from the above technical solution, it mainly involves designing an auxiliary support, which includes a supporting upright assembly, at least one clamping support assembly, and a support mounting assembly. The supporting upright assembly includes two or more supporting rods connected vertically and vertically and capable of rotating back and forth to adjust the support angle. The clamping support assembly includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar. The clamping support components are used to support the human body. The crossbar is mounted on the supporting upright assembly and its vertical position is adjustable. The position is adjustable left and right. When in use, the auxiliary bracket is fixed to the seat. Its adjustable installation position can be adapted to various seats (such as elderly chairs), providing auxiliary support for the human body. This solves the limitation of existing technologies that special groups of people rely on special chairs for support. In comparison, purchasing an auxiliary bracket to install on an existing seat is less expensive than purchasing a special support chair, which is conducive to its widespread application and can benefit more special groups of people. Moreover, this type of auxiliary bracket can flexibly adjust its height, angle and width, which can better adapt to support users of different heights, body types and weights. Its design is more humanized.

[0025] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0026] Figure 1 This is a perspective view of a universal seat auxiliary bracket that is easy to adjust flexibly, according to one embodiment of this utility model;

[0027] Figure 2 This is another perspective view of a universal seat auxiliary bracket that is easy to adjust flexibly, according to one embodiment of this utility model;

[0028] Figure 3 This is an exploded view of a universal seat auxiliary bracket and seat that are easy to adjust flexibly, according to Embodiment 1 of this utility model;

[0029] Figure 4This is a diagram illustrating the application state of the easily adjustable universal seat auxiliary bracket and the seat after assembly, according to Embodiment 1 of this utility model.

[0030] Figure 5 This is an illustration of another application state of the easily adjustable universal seat auxiliary bracket and seat after assembly, as described in Embodiment 1 of this utility model;

[0031] Figure 6 This is an exploded view of a universal seat auxiliary bracket and seat (including armrest support components) that is easy to adjust flexibly according to Embodiment 2 of this utility model.

[0032] Figure 7 This is a diagram illustrating the application state of the easily adjustable universal seat auxiliary bracket and seat after assembly, as shown in Embodiment 2 of this utility model (including armrest support components).

[0033] Figure 8 This is a side view of the handrail support assembly according to Embodiment 2 of this utility model;

[0034] Figure 9 This is an exploded view of the handrail support assembly according to Embodiment 2 of this utility model;

[0035] Figure 10 This is a cross-sectional view of the handrail support assembly according to Embodiment 2 of this utility model;

[0036] Figure 11 This is a second embodiment of the present invention, showing the human-use status of an easily adjustable universal seat support bracket. Figure 1 ;

[0037] Figure 12 This is a second embodiment of the present invention, showing the human-use status of an easily adjustable universal seat support bracket. Figure 2 ;

[0038] Figure 13 This is a second embodiment of the present invention, showing the human-use status of an easily adjustable universal seat support bracket. Figure 3 ;

[0039] Figure 14 This is a perspective view of a universal seat auxiliary bracket that is easy to adjust flexibly, according to Embodiment 3 of this utility model;

[0040] Figure 15 This is another perspective view of the universal seat auxiliary bracket that is easy to adjust flexibly according to Embodiment 3 of this utility model;

[0041] Figure 16 This is an exploded view of the universal seat auxiliary bracket and seat, which are easy to adjust flexibly according to Embodiment 3 of this utility model;

[0042] Figure 17 This is a diagram illustrating the application state of the easily adjustable universal seat auxiliary bracket and the seat after assembly, according to Embodiment 3 of this utility model.

[0043] Figure 18 This is a diagram illustrating the application state of the easily adjustable universal seat auxiliary bracket and seat assembly (including armrest support components) of Embodiment 4 of this utility model. Detailed Implementation

[0044] Please refer to Figures 1 to 18 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0045] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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. Therefore, they should not be construed as limitations on this utility model.

[0046] like Figures 1 to 5 As shown, a universal seat support bracket that is easy to adjust flexibly includes:

[0047] The support pole assembly includes two or more support poles that are connected vertically and can rotate back and forth to adjust the support angle.

[0048] At least one clamping support assembly includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar. The clamping support components are used to support the human body. The crossbar is mounted on a support pole assembly and its vertical position is adjustable. The two sets of clamping support components, or one set of clamping support components, can be adjusted left and right relative to the crossbar to change the clamping width between the two sets of clamping support components. Since the clamping support assembly is connected to the support pole assembly, the weight is concentrated on the support pole assembly. At the same time, the vertical position of the clamping support component is adjusted and limited by the support pole assembly. When the position is adjusted and locked, the clamping support component will not move downwards during use. Its clamping support position is precise and stable, making it more reliable during use. In contrast, there are some standalone clamping support products on the market, such as using a single clamping device to fix the head or shoulders. These are prone to problems with the clamping position shifting, resulting in poor reliability.

[0049] The bracket mounting assembly has an adjustable mounting position for easy removal and fixation to the seat.

[0050] In actual design and manufacturing, the clamping support components are provided in one or more sets, defined as any one or more sets of the following: hip clamping support components, waist clamping support components, upper arm clamping support components, and head clamping support components. Specifically, in Embodiment 1, the clamping support components are provided in three sets: upper arm clamping support components 20, head clamping support components 30, and hip clamping support components 40. The support rod of the support pole assembly 10 is provided in three sections: upper support rod 11, middle support rod 12, and lower support rod 13; two sets of clamping support components are provided on the upper support rod, namely upper arm clamping support components 20 and head clamping support components 30, with the head clamping support components 30 located above the upper arm clamping support components 20; one set of clamping support components, namely hip clamping support components 40, is provided on the middle support rod. The relative angle between two adjacent support rods can be adjusted by rotating them back and forth. Here, an angle locking bolt can be set between two adjacent support rods (for example, an angle locking bolt 14 is set between the upper support rod 11 and the middle support rod 12, and an angle locking bolt 15 is set between the middle support rod 12 and the lower support rod 13). The end of the support rod is provided with a rotating part, and the rotating part is provided with a horizontal through rotating hole. The rotating holes of two adjacent support rods are fitted on a shaft and can rotate. When the angle locking bolt is rotated forward, it presses the two rotating parts together inward, making the friction too great to rotate. Conversely, when it is rotated in the opposite direction, the angle locking bolt is displaced outward, releasing the pressing on the rotating part, and the support rod can rotate freely. When it is rotated to the required angle, the angle locking bolt is rotated forward again until it is locked, fixing the current angle.

[0051] The upper arm clamping support assembly 20 includes a crossbar 21 and two sets of clamping support components 26 respectively disposed at the left and right ends of the crossbar 21. The clamping support components 26 are used to support the upper arm of the human body near the shoulder. The crossbar 21 is mounted on the upper support rod 11 and its vertical position is adjustable. The two sets of clamping support components 26, or one set of clamping support components 26, can be adjusted left and right relative to the crossbar 21 to change the clamping width between the two sets of clamping support components 26, so as to meet the needs of different people's shoulder width and the width between the outer sides of the two upper arms. A telescopic rod 22 is connected between the clamping support components 26 and the crossbar 21. One end of the telescopic rod 22 extends into the crossbar 21, and the other end of the telescopic rod 22 is connected to the clamping support component 26. The telescopic rod 22 is slidably disposed relative to the crossbar 21, and a telescopic locking member is provided on the crossbar 21 to lock the position of the telescopic rod 22. The telescopic locking component includes a first locking bolt 27. A first locking screw hole is provided on the crossbar 21. The first locking bolt 27 passes through the first locking screw hole and is threadedly connected to it. When the first locking bolt 27 is rotated in the forward direction, the first locking bolt 27 moves inward to abut against the telescopic rod 22, locking the current position of the telescopic rod 22. When the first locking bolt 27 is rotated in the reverse direction, the first locking bolt 27 moves outward to release the abutment and lock against the telescopic rod 22, allowing the telescopic rod 22 to move freely left and right. After adjusting to a suitable width, the first locking bolt 27 is rotated in the forward direction again to lock the current position of the telescopic rod 22.

[0052] The head clamping support assembly 30 includes a crossbar 31 and two sets of clamping support components 34 respectively disposed at the left and right ends of the crossbar 31. The clamping support components 34 are used to support the left and right sides of the human head. The crossbar 31 is mounted on the upper support rod 11 and its vertical position is adjustable. The positions of the two sets of clamping support components 34, or one set of clamping support components 34, relative to the crossbar 31 can be adjusted left and right to change the clamping width between the two sets of clamping support components 34 to meet the head width adaptation needs of different people. Similarly, a telescopic rod 32 is connected between the clamping support components 34 and the crossbar 31. One end of the telescopic rod 32 extends into the crossbar 31, and the other end of the telescopic rod 32 is connected to the clamping support component 34. The telescopic rod 32 is slidably disposed relative to the crossbar 31, and a telescopic locking member is provided on the crossbar 31 to lock the position of the telescopic rod 32. The telescopic locking component includes a first locking bolt 35. A first locking screw hole is provided on the crossbar 31. The first locking bolt 35 passes through the first locking screw hole and is threadedly connected to it. When the first locking bolt 35 is rotated in the forward direction, the first locking bolt 35 moves inward to abut against the telescopic rod 32, locking the current position of the telescopic rod 32. When the first locking bolt 35 is rotated in the reverse direction, the first locking bolt 35 moves outward to release the abutment and lock against the telescopic rod 32, allowing the telescopic rod 32 to move freely left and right. After adjusting to a suitable width, the first locking bolt 35 is rotated in the forward direction again to lock the current position of the telescopic rod 32.

[0053] The hip clamping support assembly 40 includes a crossbar 41 and two sets of clamping support components 46 respectively disposed at the left and right ends of the crossbar 41. The clamping support components 46 are used to support the upper arm of the human body near the shoulder. The crossbar 41 is mounted on the support rod 12 in the middle section and its vertical position is adjustable. The two sets of clamping support components 46, or one set of clamping support components 46, can be adjusted left and right relative to the crossbar 41 to change the clamping width between the two sets of clamping support components 46, so as to meet the needs of different people's shoulder width and the width between the outer sides of the two upper arms. A telescopic rod 42 is connected between the clamping support components 46 and the crossbar 41. One end of the telescopic rod 42 extends into the crossbar 41, and the other end of the telescopic rod 42 is connected to the clamping support component 46. The telescopic rod 42 is slidably disposed relative to the crossbar 41, and a telescopic locking member is provided on the crossbar 41 to lock the position of the telescopic rod 42. The telescopic locking component includes a first locking bolt 47. A first locking screw hole is provided on the crossbar 41. The first locking bolt 47 passes through the first locking screw hole and is threadedly connected to it. When the first locking bolt 47 is rotated in the forward direction, the first locking bolt 47 moves inward to abut against the telescopic rod 42, locking the current position of the telescopic rod 42. When the first locking bolt 47 is rotated in the reverse direction, the first locking bolt 47 moves outward to release the abutment and lock against the telescopic rod 42, allowing the telescopic rod 42 to move freely left and right. After adjusting to a suitable width, the first locking bolt 47 is rotated in the forward direction again to lock the current position of the telescopic rod 42.

[0054] Each of the horizontal bars 21, 31, and 41 has a corresponding lifting adjustment block connected to its rear middle position. The outer side of each lifting adjustment block is equipped with corresponding second locking bolts 23, 33, and 43. The lifting adjustment block has a through hole (usually circular) that runs vertically through it. The outer side of the lifting adjustment block has a second locking screw hole that runs horizontally through the through hole. The lifting adjustment block is fitted onto the corresponding support rod (the lifting adjustment blocks of horizontal bars 21 and 31 are fitted onto the upper support rod 11, while the lifting adjustment block of horizontal bar 41 is fitted onto the middle support rod 12). The second locking bolt passes through the second locking screw hole and is threaded onto it. Rotating the second locking bolt forward causes it to move inward and press against the support rod, locking the lifting adjustment block to its current position. Rotating the second locking bolt in the opposite direction causes it to move outward and release the pressure on the support rod, allowing the lifting adjustment block to move freely up and down. After adjusting to a suitable height, the second locking bolt 35 is rotated forward again to lock the lifting adjustment block to its current position.

[0055] The structure of the bracket mounting assembly can vary, as long as it allows for adjustment of the installation position and detachment and fixation to the seat. Specifically, in Embodiment 1, the bracket mounting assembly includes a backrest clamping and fixing mechanism, which comprises two clamping and fixing plates arranged on opposite sides. The two clamping and fixing plates, or one of them, are mounted on a corresponding crossbar and can be adjusted left and right relative to the crossbar to change the clamping width between the two clamping and fixing plates, thus clamping the left and right sides of the backrest 201. Specifically, the backrest clamping and fixing mechanism can be integrated into the upper arm clamping support assembly 20 and / or the hip clamping support assembly 40. The clamping and fixing plates 24 are sleeved onto the crossbar 21 and can slide left and right along the crossbar 21, secured by a third locking bolt 25 (or a corresponding third locking bolt). Bolt 45 passes through the third locking screw hole of the sleeve portion of clamping fixing plate 24 (or the corresponding clamping fixing plate 44) and is threadedly connected to it; rotate the third locking bolt 25 (or the corresponding third locking bolt 45) in the forward direction, the third locking bolt 25 moves inward to abut against the crossbar 21 (or the corresponding crossbar 41), locking the current position of clamping fixing plate 24 (or the corresponding clamping fixing plate 44); rotate the third locking bolt 25 (or the corresponding third locking bolt 45) in the reverse direction, the third locking bolt moves outward to release the abutment and lock against the crossbar, the clamping fixing plate can move freely left and right, after adjusting to a suitable width, rotate the third locking bolt in the forward direction to lock the current position of the clamping fixing plate. The bracket mounting assembly also includes a chair leg clamping and fixing mechanism, which includes two chair leg clamps 18 arranged on opposite sides. The chair leg clamps 18 are used for detachable clamping and fixing to the chair legs 202. The lower end of the support rod assembly 10 (also referring to the lower end of the lower support rod 13) is connected to a chair leg connecting rod 17. A rod seat is mounted on the chair leg connecting rod 17, and the upper end of the rod seat has a recessed insertion hole for the lower end of the lower support rod 13 to extend into. A sixth locking bolt 16 is provided on the rear side of the rod seat. The sixth locking bolt 16 passes through the sixth locking screw hole of the rod seat and abuts against the lower end wall surface of the lower support rod 13 to lock the lower support rod 13. The two chair leg clamps 18 are mounted on the chair leg connecting rod 17, and the position of either or both chair leg clamps 18 relative to the chair leg connecting rod 17 can be adjusted left and right to change the distance between the two chair leg clamps 18 to adapt to different chair leg 202 spacings. The chair leg fixing clip 18 is a U-shaped clip with an opening facing the chair leg. The effective clamping opening is adjusted by passing the fourth locking bolt 181 through the fourth locking screw hole of one of the clamp arms of the chair leg fixing clip 18 and threadedly connecting it to the bolt, so as to clamp and fix the chair leg fixing clip 18 onto the chair leg 202.The chair leg fixing clip 18 is sleeved on the chair leg connecting rod 17 and locked in position by the fifth locking bolt 19. Specifically, the fifth locking bolt 19 passes through the fifth locking screw hole of the sleeve part of the chair leg fixing clip 18 and is threadedly connected to it. When the fifth locking bolt 19 is rotated in the forward direction, it moves inward to abut against the chair leg connecting rod 17 and locks the current position of the chair leg fixing clip 18. When the fifth locking bolt 19 is rotated in the reverse direction, it moves outward to release the abutment and lock against the chair leg connecting rod 17, adjusts to a suitable width, and then locks again.

[0056] In actual design and manufacturing, the chair back clamping and fixing mechanism and the aforementioned clamping support assembly are set independently. That is, the chair back clamping and fixing mechanism has its own adjusting rod, which is equivalent to a crossbar. The adjusting rod is independent of the crossbar. Two clamping and fixing plates or one of the clamping and fixing plates are installed on the adjusting rod, and their positions can be adjusted left and right relative to the adjusting rod to change the clamping width between the two clamping and fixing plates.

[0057] In actual design and manufacturing, the bracket mounting assembly can be used with the backrest clamping and / or the leg clamping and fixing mechanism to install the entire seat auxiliary bracket 100 onto the seat 200.

[0058] like Figures 6 to 13 As shown, the seat auxiliary support also includes: an armrest support assembly 50, which is detachably fixed above the armrest 203 of the seat 200 to support the lower arm and hand of the human body; the armrest support assembly 50 includes an armrest body, an armrest height adjustment mechanism, an armrest angle adjustment mechanism, and an armrest mounting base arranged sequentially from top to bottom; the armrest body is mounted on the armrest height adjustment mechanism, and the height of the armrest body relative to the armrest mounting base can be adjusted by the armrest height adjustment mechanism, for example, the height can be adjusted from 0-40 mm; the armrest angle adjustment mechanism is connected between the armrest mounting base and the armrest height adjustment mechanism, and the angle of the armrest body relative to the armrest mounting base can be adjusted by the armrest angle adjustment mechanism, for example, the angle adjustment of 40 degrees left and right, and has damping adjustment.

[0059] The top surface of the handrail body 51 is provided with an elbow recess. An upper adjustment plate 52 is installed on the bottom surface of the handrail body 51. The handrail height adjustment mechanism 53 includes a lower adjustment plate 531, a torsion spring 532, and a swing member 533. A tail plate is provided at the rear end of the lower adjustment plate 531. A through hole 5311 is provided on the tail plate. The upper end of the adjustment strap 55 is connected to the rear end of the upper adjustment plate 52, and the lower end passes through the through hole 5311 and extends backward. The lower end of the swing member 533 is hinged to the lower adjustment plate 531, and the upper end of the swing member 533 is hinged to the upper adjustment plate 52. The two torsion arms of the torsion spring 532 act on the lower adjustment plate 531 and the swing member 533 respectively. A damping shaft 561 and an angle adjustment plate 562 are installed between the handrail mounting base 54 and the lower adjustment plate 531. When height adjustment is needed, pull down the adjusting strap 55 to raise the height of the handrail body 51, and press down on the handrail body 51 to lower its height. When adjusting the horizontal angle of the handrail body 51, simply rotate it to the left or right. Considering the versatility of the handrail mounting base 54, it is designed as two assembled L-shaped plates 541 to accommodate handrails 203 of different widths.

[0060] like Figures 14 to 17 As shown, its structure is basically the same as that of Embodiment 1, the main difference being that the lower end of the support pole assembly is connected to a wheeled base frame. The wheeled base frame includes a base frame body and one or more chair wheels 18' installed at the bottom of the base frame body. The chair wheels can be any of the following: swivel wheels, fixed casters, single-axle wheels, double-axle wheels, or locking wheels. In use, the wheeled base frame is in direct contact with the ground and does not need to be assembled and fixed with the chair legs. Therefore, it is not limited by the shape of the chair legs (because some chair legs are not two chair legs with a regular left-right spacing at the back), and can be adapted to more types of chairs. Preferably, in actual manufacturing, casters are usually selected for the wheeled base frame because they can rotate 360 ​​degrees, offer high flexibility, and come in insert and screw types, suitable for frequent movement. Of course, other types of wheels can also be selected as needed, each with its own advantages, such as: fixed casters: good stability, can only move in one direction, suitable for occasions where frequent movement is not required; single-axis wheels: can only rotate in one direction, good stability, and not easy to slip; dual-axis wheels: can rotate in multiple directions, offering high flexibility; locking wheels: equipped with a brake function, can fix the chair's position, suitable for occasions requiring fixed positioning; and chair wheels. The materials used for chair wheels are not limited. For example, PU (polyurethane) chair wheels are lightweight, do not easily scratch the floor, and have good noise reduction, making them suitable for hard floors (such as wood flooring and ceramic tiles); PA (nylon) chair wheels are tough, wear-resistant, lightweight, and have strong load-bearing capacity, making them suitable for carpets; PP (plastic) chair wheels are suitable for various floor types, but may scratch the floor and have poor anti-slip and shock absorption effects; rubber / soft plastic chair wheels are suitable for soft floors (such as carpets), have good anti-slip and shock absorption effects, but have higher sliding resistance; metal / hard plastic chair wheels are suitable for hard floors, with good wear resistance and anti-slip properties.

[0061] The main body of the base frame includes a left L-shaped base frame 171 and a right L-shaped bottom wall 172. The left end of the right L-shaped bottom wall 172 extends into the right end of the left L-shaped base frame 171 and can be adjusted left and right to adjust the effective width of the main body of the base frame. A seventh locking bolt 16' is provided on the rear side of the left L-shaped base frame 171. The seventh locking bolt 16' passes through the seventh locking screw hole of the left L-shaped base frame 171 and abuts against the outer surface of the left end of the right L-shaped bottom wall 172 to lock the right L-shaped bottom wall 172.

[0062] like Figure 18 As shown, similarly, the lower end of this type of support pole assembly is connected to a seat auxiliary bracket with a wheeled base, which may also include an armrest support assembly 50.

[0063] The key design feature of this utility model lies in its design of an auxiliary support frame, comprising a support pole assembly, at least one clamping support assembly, and a support mounting assembly. The support pole assembly includes two or more vertically connected support rods capable of rotating and adjusting their support angle. The clamping support assembly includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar, which are used to support the human body. The crossbar is mounted on the support pole assembly and its vertical position is adjustable, while the clamping support components are adjustable horizontally. In application, the auxiliary support frame is fixed to a chair, and its adjustable mounting position allows it to adapt to various chairs (such as chairs for the elderly), providing auxiliary support for the human body. This overcomes the limitations of existing technologies where special groups rely on dedicated chairs for support. Compared to purchasing a dedicated support chair, installing the auxiliary support frame on an existing chair is less expensive, facilitating its widespread application and benefiting more people with special needs. Furthermore, this auxiliary support frame can flexibly adjust its height, angle, and width, better adapting to and supporting users of different heights, body types, and weights, making its design more human-centered.

[0064] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A universal seat support bracket that is easy to adjust flexibly, characterized in that, Including: The support pole assembly includes a support pole with two or more sections connected vertically and capable of rotating back and forth to adjust the support angle; At least one clamping support assembly includes a crossbar and two sets of clamping support components respectively disposed at the left and right ends of the crossbar. The clamping support components are used to support a human body. The crossbar is mounted on the support pole assembly and its vertical position is adjustable. The two sets of clamping support components or one set of clamping support components can be adjusted left and right relative to the crossbar to change the clamping width between the two sets of clamping support components. The bracket mounting assembly has an adjustable mounting position for easy removal and fixation to the seat.

2. The universal seat auxiliary bracket that is easy to adjust flexibly according to claim 1, characterized in that, A telescopic rod is connected between the clamping support component and the crossbar. One end of the telescopic rod extends into the crossbar, and the other end is connected to the clamping support component. The telescopic rod is slidably disposed relative to the crossbar. Furthermore, a telescopic locking component is provided on the crossbar to lock the position of the telescopic rod.

3. The universal seat auxiliary bracket that is easy to adjust flexibly according to claim 2, characterized in that, The telescopic locking component includes a first locking bolt, and a first locking screw hole is provided on the crossbar. The first locking bolt passes through the first locking screw hole and is threadedly connected to it. When the first locking bolt is rotated in the forward direction, the first locking bolt moves inward and abuts against the telescopic rod. When the first locking bolt is rotated in the reverse direction, the first locking bolt moves outward and releases the abutment and lock against the telescopic rod.

4. The universal seat auxiliary bracket that is easy to adjust flexibly according to claim 1, characterized in that, The clamping support assembly is defined as any one or more of the following: hip clamping support assembly, waist clamping support assembly, upper arm clamping support assembly, and head clamping support assembly.

5. The universal seat support bracket that is easy to adjust flexibly according to claim 1, characterized in that, The bracket mounting assembly includes a chair back clamping and fixing mechanism, which includes two clamping and fixing plates arranged on opposite left and right sides; wherein: Two or one of the clamping plates are mounted on the crossbar and can be adjusted left and right relative to the crossbar to change the clamping width between the two clamping plates; Alternatively, the chair back clamping and fixing mechanism may further include an adjusting rod, on which two or one of the clamping and fixing plates are mounted and can be adjusted left and right relative to the adjusting rod to change the clamping width between the two clamping and fixing plates.

6. The universal seat support bracket that is easy to adjust flexibly according to claim 1, characterized in that, The crossbar is connected to a lifting adjustment block, which has a through hole extending vertically. A second locking screw hole, horizontally extending through the through hole, is located on the outer side of the lifting adjustment block. The lifting adjustment block is sleeved on the support rod. A second locking bolt is located on the outer side of the lifting adjustment block, passing through the second locking screw hole and threadedly connected thereto. Rotating the second locking bolt forward causes it to move inward and press against the support rod; rotating it in the opposite direction causes it to move outward and release the locking mechanism on the support rod.

7. The universal seat support bracket that is easy to adjust flexibly according to claim 1, characterized in that, The support rod is provided in three sections, and the relative angle between two adjacent support rods can be adjusted by rotating back and forth; the upper section of the support rod is provided with two sets of clamping support components, namely an upper arm clamping support component and a head clamping support component; the middle section of the support rod is provided with one set of clamping support components, which is a buttock clamping support component.

8. The universal seat support bracket that is easily and flexibly adjustable according to claim 1 or 5, characterized in that, The bracket mounting assembly includes a chair leg clamping and fixing mechanism, which includes two chair leg fixing clips arranged on the left and right sides. The chair leg fixing clips are used for detachable clamping and fixing to the chair legs. The lower end of the support pole assembly is connected to a chair leg connecting rod. The two chair leg fixing clips are installed on the chair leg connecting rod. Furthermore, the position of the two chair leg fixing clips or one of the chair leg fixing clips relative to the chair leg connecting rod can be adjusted left and right.

9. The universal seat auxiliary bracket that is easy to adjust flexibly according to claim 1, characterized in that, The lower end of the support pole assembly is connected to a wheeled base frame. The wheeled base frame includes a base frame body and chair wheels installed at the bottom of the base frame body. The chair wheels are any one of swivel wheels, fixed casters, single-axis structure wheels, double-axis structure wheels, and locking wheels.

10. The universal seat support bracket that is easily and flexibly adjustable according to claim 1, characterized in that, It also includes: An armrest support assembly is detachably fixed to the upper armrest of a seat to support the forearm and hand of a human. The armrest support assembly includes, from top to bottom, an armrest body, an armrest height adjustment mechanism, an armrest angle adjustment mechanism, and an armrest mounting base. The armrest body is mounted on the armrest height adjustment mechanism, which adjusts the height of the armrest body relative to the armrest mounting base. The armrest angle adjustment mechanism is connected between the armrest mounting base and the armrest height adjustment mechanism, and adjusts the angle of the armrest body relative to the armrest mounting base.

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