X-shaped table leg lifting seat

Abstract

The invention discloses a lifting seat with X-shaped table legs, and relates to the technical field of seats. Comprising a seat plate, and a backrest is arranged at the top of the seat plate; the connecting mechanism is arranged at the bottom of the seat plate, the connecting mechanism comprises X-shaped table legs, sliding assemblies are arranged at the tops of the X-shaped table legs, and the sliding assemblies are connected with the seat plate; the adjusting mechanism is connected with the connecting mechanism, the adjusting mechanism comprises a supporting plate and a clamping plate, and the supporting plate and the clamping plate are used for controlling the sliding assembly to ascend and descend; the backrest mechanism is arranged outside the backrest, the backrest mechanism is used for adjusting the angle of the backrest, the connecting mechanism further comprises a bottom cushion, the bottom cushion is installed at the bottom of the seat plate, and the bottom cushion is made of a rubber material; and the connecting plate is installed at the top of the X-shaped table leg, and the X-shaped table leg lifting seat type table leg lifting seat achieves the purpose of improving the use efficiency of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of seats, in particular to an X-shaped seat with lifting legs. Background Art

[0002] A height-adjustable chair is a type of chair designed for sitting. Its characteristic is that the seat plate can be adjusted in height. The seat plate slides vertically onto a base that can be placed on the ground, thereby adjusting a person's sitting height relative to the ground. The key to a height-adjustable chair lies in its seat plate height adjustment mechanism. Existing technologies for such height adjustment mechanisms are numerous and diverse.

[0003] Patent publication number CN108720395A discloses a liftable chair. By pulling up a support rod, a rocker plate at its lower end is raised from a first stop to the height of a first slider. The vertical force of gravity acting on the support rod acts on the contact surface between the rocker plate and the first and second sliders. This increases the contact area exposed to gravity, thereby improving the seat's load-bearing capacity. However, when adjusting the seat height while seated, the user may experience a sudden drop or rise of a significant distance, causing the seat to sway. Summary of the Invention

[0004] In order to overcome the problem that when a user adjusts the seat height while sitting, the seat may suddenly drop or rise a large distance, causing the user to shake. The present invention provides an X-shaped leg lift seat, comprising a seat plate, a backrest being provided on the top of the seat plate;

[0005] A connecting mechanism, the connecting mechanism being arranged at the bottom of the seat plate, the connecting mechanism comprising an X-shaped table leg, the top of the X-shaped table leg being provided with a sliding assembly, the sliding assembly being connected to the seat plate;

[0006] An adjusting mechanism connected to the connecting mechanism, the adjusting mechanism comprising a supporting plate and a retaining plate, the supporting plate and the retaining plate being used to control the lifting and lowering of the sliding assembly;

[0007] A backrest mechanism is provided on the outside of the backrest and is used for adjusting the angle of the backrest.

[0008] Preferably, the connecting mechanism further comprises:

[0009] A bottom pad, which is installed on the bottom of the seat plate and is made of rubber;

[0010] A connecting plate is installed on the top of the X-shaped table leg and is connected to the sliding assembly.

[0011] Preferably, the sliding assembly comprises:

[0012] An adjusting column, which is installed on the top of the connecting plate. Two adjusting columns are provided and are symmetrically arranged;

[0013] A fixing frame, wherein two fixing frames are provided and the two fixing frames are respectively installed on the top of the two adjusting columns;

[0014] A slider, the slider being slidably connected to the interior of the fixed frame;

[0015] A connecting rod is installed on the top of the slider, passes through the interior of the fixed frame, and is connected to the bottom plate.

[0016] Preferably, the sliding assembly further comprises:

[0017] A top plate, the top plate being mounted on the top of the fixed frame, and the connecting rod passing through the interior of the top plate;

[0018] A first lifting rod is installed on the top of the connecting plate and is connected to the adjusting mechanism.

[0019] Preferably, the sliding assembly further comprises:

[0020] A channel is provided inside the top plate, and two channels are provided and are symmetrically arranged;

[0021] A lifting plate is installed at the bottom of the top plate, and a contact pad is installed on the top of the lifting plate.

[0022] Preferably, the adjustment mechanism comprises:

[0023] a first frame mounted on top of the first lifting rod;

[0024] a second push rod, the second push rod being installed inside the first frame, two second push rods being provided and symmetrically arranged, and the two second push rods being respectively connected to the support plate;

[0025] a second lifting rod, the second lifting rod being mounted on a top of the first frame;

[0026] a second frame mounted on top of the second lifting rod;

[0027] The first push rod is installed inside the second frame. Two first push rods are provided and symmetrically arranged. The two first push rods are respectively connected to the positioning plate.

[0028] Preferably, the adjustment mechanism further comprises:

[0029] Adjustment rods, wherein four adjustment rods are provided, two of which are installed on the top of the first frame, and the other two are installed on the bottom of the second frame;

[0030] A bent rod, the bent rod being mounted on the outside of the adjusting rod;

[0031] A transverse plate is installed on the outside of the bent rod. A scraper is installed on the outside of the transverse plate. There are multiple scrapers that are evenly arranged.

[0032] Preferably, the backrest mechanism comprises:

[0033] A rotating shaft, the rotating shaft being installed inside the seat plate and connected to the backrest;

[0034] An extension plate, the extension plate being mounted on the outside of the seat plate, and a third lifting rod being mounted on the top of the extension plate;

[0035] A joint is connected to the third lifting rod, and the joint is connected to the backrest.

[0036] Preferably, the backrest mechanism further comprises:

[0037] a rubber rod, wherein the rubber rod is installed on the outside of the backrest, and a plurality of the rubber rods are provided;

[0038] A railing, the railing being mounted on the outside of the backrest, the railing being provided with a locking rod on the outside, and a plurality of locking rods being provided;

[0039] An armrest is installed on the top of the seat plate. Two armrests are provided, and a placement frame is installed on the outside of one of the armrests.

[0040] The present invention provides an X-shaped table leg lift chair. It has the following beneficial effects:

[0041] 1. This X-shaped table-leg lift chair features a connecting mechanism and an adjustment mechanism for height adjustment. Existing lift chairs can cause the user to sway when adjusting the seat height due to sudden drops or large rises. Therefore, the connecting and adjustment mechanisms are incorporated to gradually adjust the travel of the first lift rod. Support plates and retaining plates are used at the top and bottom of the slider to limit its height, preventing the seat from suddenly dropping or rising too high.

[0042] 2. This X-shaped leg lift chair features a connecting mechanism and sliding assembly to provide elastic protection for the top and seat panels. A base pad beneath the seat panel and a contact pad within the top panel reduce friction between the top and seat panels, preventing repeated impact or contact between the seat panel and the top panel during lifting, which could cause wear. Furthermore, because both the base pad and the contact pad are made of rubber, elastic compression occurs when the top and seat panels approach, reducing the impact force on the user above the base panel.

[0043] 3. The X-shaped table leg lifting seat adjusts the height of the slider by providing an adjustment mechanism. By providing a support plate and a retaining plate, the support plate and the retaining plate are located at the bottom and top of the slider, respectively, and the height of the slider is controlled by the support plate and the retaining plate. When the first lifting rod stops moving, the support plate and the retaining plate lock the position of the slider from the bottom and top of the slider, thereby locking the height of the seat plate. The upper surface of the support plate and the lower surface of the retaining plate are respectively provided with a second friction strip and a first friction strip, which can increase friction with the slider. By controlling the position of the support plate and the retaining plate, the first and second friction strips can be brought into contact with the scraper, promoting the separation of dust and impurities from the first and second friction strips.

[0044] 4. This X-shaped table-leg lift chair features a backrest mechanism that allows for adjustment of the backrest angle. By adjusting the third lift rod to the appropriate stroke according to the user's sitting posture and habits, the third lift rod drives the joint during the lifting process. The deformation of the joint then causes the backrest and the rotating shaft to deflect, thereby positioning the backrest at the appropriate angle. The adjustment process is simple, and when the user is resting, the backrest is tilted, allowing the headrest to be removed from the frame and inserted between the upper and lower rubber rods. The left and right sides of the headrest engage multiple locking rods, further restricting the headrest's position. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0046] Figure 2 Schematic diagram of the bottom structure of the present invention;

[0047] Figure 3 This is a schematic structural diagram of the connecting mechanism of the present invention;

[0048] Figure 4 This is a schematic structural diagram of the sliding assembly of the present invention;

[0049] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle;

[0050] Figure 6 This is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0051] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at B in the middle;

[0052] Figure 8 This is a schematic structural diagram of the backrest mechanism of the present invention;

[0053] Figure 9 It is a side structural diagram of the backrest mechanism of the present invention.

[0054] In the figure: 1. Seat plate; 2. Connecting mechanism; 201. Bottom pad; 202. Sliding assembly; 2021. Adjusting column; 2022. Fixing frame; 2023. Sliding block; 2024. Connecting rod; 2025. First lifting rod; 2026. Top plate; 2027. Lifting plate; 2028. Contact pad; 2029. Channel; 203. Connecting plate; 204. X-shaped table leg; 3. Adjusting mechanism; 301. First frame; 302. Second lifting rod ; 303, second frame; 304, first push rod; 305, positioning plate; 306, second push rod; 307, support plate; 308, adjustment rod; 309, bending rod; 310, horizontal plate; 311, scraper; 4, backrest mechanism; 401, rotating shaft; 402, joint; 403, rubber rod; 404, railing; 405, positioning rod; 406, handrail; 407, placement frame; 408, extension plate; 409, third lifting rod; 5, backrest. DETAILED DESCRIPTION

[0055] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0056] like Figures 1-9 As shown, the present invention provides a technical solution: comprising a seat plate 1, a backrest 5 is provided on the top of the seat plate 1;

[0057] Connecting mechanism 2, which is disposed at the bottom of the seat plate 1 and includes an X-shaped table leg 204. A sliding assembly 202 is disposed on the top of the X-shaped table leg 204, and the sliding assembly 202 is connected to the seat plate 1;

[0058] The adjusting mechanism 3 is connected to the connecting mechanism 2 and includes a support plate 307 and a positioning plate 305. The support plate 307 and the positioning plate 305 are used to control the lifting and lowering of the sliding assembly 202;

[0059] The backrest mechanism 4 is arranged outside the backrest 5 and is used to adjust the angle of the backrest 5 .

[0060] Before using the device, the user sits on seat 1 and adjusts the height of seat 1 by adjusting adjustment mechanism 3 and connecting mechanism 2. After adjustment, the user adjusts adjustment mechanism 3 to lock the height of seat 1. The user then adjusts backrest mechanism 4 to adjust the angle of backrest 5 according to their sitting posture and habits.

[0061] The connecting mechanism 2 further includes:

[0062] Bottom pad 201, which is installed at the bottom of the seat plate 1 and is made of rubber;

[0063] The connecting plate 203 is installed on the top of the X-shaped table leg 204 , and the connecting plate 203 is connected to the sliding assembly 202 .

[0064] When the height of the seat plate 1 needs to be adjusted, the adjusting mechanism 3 is adjusted, and the adjusting mechanism 3 controls the height of the connecting mechanism 2 , and the connecting mechanism 2 controls the height of the seat plate 1 .

[0065] The sliding assembly 202 includes:

[0066] Adjustment column 2021, which is installed on the top of the connecting plate 203. There are two adjustment columns 2021, which are symmetrically arranged.

[0067] Two fixing frames 2022 are provided, and the two fixing frames 2022 are respectively installed on the top of the two adjustment columns 2021;

[0068] Slider 2023, which is slidably connected to the interior of the fixed frame 2022;

[0069] Connecting rod 2024, which is installed on the top of slider 2023, passes through the interior of fixed frame 2022, and is connected to the bottom plate;

[0070] Top plate 2026 , top plate 2026 is mounted on top of fixed frame 2022 , and connecting rod 2024 passes through the interior of top plate 2026 ;

[0071] A first lifting rod 2025 is provided with multiple strokes. The first lifting rod 2025 is mounted on the top of the connecting plate 203 and is connected to the adjustment mechanism 3.

[0072] Channel 2029, channel 2029 is opened inside the top plate 2026, and there are two channels 2029, which are symmetrically arranged;

[0073] The lifting plate 2027 is configured as a connector between the adjustable rod 308 and the disc. The lifting plate 2027 is installed at the bottom of the top plate 2026. A contact pad 2028 is installed on the top of the lifting plate 2027. The contact pad 2028 is configured to be made of rubber.

[0074] In the initial state, the top of the connecting rod 2024 falls on the top plate 2026, the slider 2023 is at the lowest position in the fixed frame 2022, and the slider 2023 does not contact the bottom of the fixed frame 2022, the contact pad 2028 is in the channel 2029 and contacts the bottom of the seat plate 1, and the bottom pad 201 at the bottom of the seat plate 1 contacts the top plate 2026.

[0075] When it is necessary to adjust the seat plate 1 upward, the first lifting rod 2025 is opened one by one to increase the stroke. The first lifting rod 2025 drives the adjusting mechanism 3 to move upward, the adjusting mechanism 3 drives the slider 2023 to move upward, the slider 2023 drives the connecting rod 2024 to move upward, and the connecting rod 2024 drives the seat plate 1 to move upward, thereby adjusting the upward height of the seat plate 1.

[0076] When it is necessary to adjust the seat plate 1 downward, the first lifting rod 2025 is adjusted successively to reduce a stroke. The first lifting rod 2025 drives the adjusting mechanism 3 to move downward, the adjusting mechanism 3 drives the slider 2023 to move downward, the slider 2023 drives the connecting rod 2024 to move downward, and the connecting rod 2024 drives the seat plate 1 downward, thereby adjusting the downward height of the seat plate 1.

[0077] The connection mechanism 2 and the sliding assembly 202 are provided to elastically protect the top plate 2026 and the seat plate 1. The bottom pad 201 is provided below the seat plate 1 and the contact pad 2028 is provided in the top plate 2026 to reduce friction between the top plate 2026 and the seat plate 1, thereby preventing the seat plate 1 from repeatedly colliding or contacting with the top plate 2026 during the lifting process, thereby preventing wear and tear on both. At the same time, because the bottom pad 201 and the contact pad 2028 are both made of rubber, elastic compression occurs when the top plate 2026 and the seat plate 1 are brought closer together, thereby reducing the impact force on the user above the bottom plate.

[0078] The regulating mechanism 3 comprises:

[0079] A first frame 301, which is mounted on top of the first lifting rod 2025;

[0080] A second push rod 306 is installed inside the first frame 301. Two second push rods 306 are provided and are symmetrically arranged. The two second push rods 306 are respectively connected to a support plate 307. The upper surface of the support plate 307 is provided with a first friction strip;

[0081] A second lifting rod 302, which is installed on the top of the first frame 301;

[0082] A second frame 303, which is mounted on the top of the second lifting rod 302;

[0083] A first push rod 304 is installed inside the second frame 303. Two first push rods 304 are provided and are symmetrically arranged. The two first push rods 304 are respectively connected to a positioning plate 305. The positioning plate 305 is set as a U-shaped plate. The lower surface of the positioning plate 305 is provided with a second friction strip;

[0084] Adjustment rods 308, there are four adjustment rods 308, two of which are installed on the top of the first frame 301, and the other two adjustment rods 308 are installed on the bottom of the second frame 303. The stroke of the adjustment rods 308 can be manually adjusted;

[0085] A bent rod 309, which is mounted on the outside of the adjusting rod 308;

[0086] The horizontal plate 310 is installed on the outside of the curved rod 309. A scraper 311 is installed on the outside of the horizontal plate 310. There are multiple scrapers 311, which are evenly arranged.

[0087] In the initial state, the first lifting rod 2025 is in the initial state, and the second push rod 306 is in the open state. At this time, the support plate 307 is in the fixed frame 2022, and the upper surface of the support plate 307 contacts the bottom of the slider 2023. The second lifting rod 302 is in the initial state, and the first push rod 304 is in the open state. At this time, the locking plate 305 is in the fixed frame 2022, and the lower surface of the locking plate 305 contacts the top of the slider 2023.

[0088] When the height of the seat plate 1 needs to be adjusted, the stroke of the first lifting rod 2025 is adjusted. The first lifting rod 2025 drives the first frame 301, the second lifting rod 302 and the second frame 303 to move. The first frame 301 drives the second push rod 306 and the support plate 307 to move. The second frame 303 drives the first push rod 304 and the positioning plate 305 to move. The support plate 307 and the positioning plate 305 drive the slider 2023 to move, thereby adjusting the height of the slider 2023.

[0089] When the first lifting rod 2025 stops moving, the locking plate 305 and the supporting plate 307 lock the position of the slider 2023, thereby locking the height of the seat plate 1.

[0090] When the device is not in use, adjust the second push rod 306 to a reciprocating motion state. The second push rod 306 drives the support plate 307 to repeatedly enter and exit the first frame 301. The top of the support plate 307 contacts the scraper 311 at the bottom of the cross plate 310. The scraper 311 drives the impurities and dust in the second friction strip to move, thereby promoting the impurities and dust to detach from the second friction strip at the top of the support plate 307.

[0091] When the device is not in use, adjust the first push rod 304 to a reciprocating motion state, and the first push rod 304 drives the locking plate 305 to repeatedly enter and exit the second frame 303. The top of the locking plate 305 contacts the scraper 311 at the bottom of the horizontal plate 310. The scraper 311 drives the impurities and dust in the first friction strip to move, thereby promoting the impurities and dust to separate from the first friction strip at the top of the locking plate 305.

[0092] The height of the slider 2023 is adjusted by providing an adjustment mechanism 3. The support plate 307 and the retaining plate 305 are positioned at the bottom and top of the slider 2023, respectively. The support plate 307 and the retaining plate 305 control the height of the slider 2023. When the first lifting rod 2025 stops moving, the support plate 307 and the retaining plate 305 lock the slider 2023 from the bottom and top, thereby locking the height of the seat plate 1. The upper surface of the support plate 307 and the lower surface of the retaining plate 305 are provided with a second friction strip and a first friction strip, respectively, to increase friction with the slider 2023. By controlling the positions of the support plate 307 and the retaining plate 305, the first and second friction strips can be brought into contact with the scraper 311, promoting the removal of dust and impurities from the first and second friction strips.

[0093] The backrest mechanism 4 includes:

[0094] Rotating shaft 401, which is installed inside the seat plate 1 and connected to the backrest 5;

[0095] Extension plate 408, which is mounted on the outside of the seat plate 1, with a third lifting rod 409 mounted on the top of the extension plate 408;

[0096] Joint 402, which is connected to the third lifting rod 409 and the backrest 5;

[0097] A rubber rod 403 is installed on the outside of the backrest 5, and a plurality of rubber rods 403 are provided;

[0098] A railing 404 is mounted on the outside of the backrest 5. A locking rod 405 is mounted on the outside of the railing 404. A plurality of locking rods 405 are provided.

[0099] The armrest 406 is installed on the top of the seat plate 1. There are two armrests 406. A placement frame 407 is installed on the outside of one of the armrests 406. The placement frame 407 is used to place the headrest. A ventilation hole is opened inside the backrest 5.

[0100] According to the user's sitting posture and habits, the third lifting rod 409 is adjusted to the corresponding stroke. During the lifting process, the third lifting rod 409 drives the joint 402 to move. After the joint 402 is deformed, it drives the backrest 5 and the rotating shaft 401 to deflect, so that the backrest 5 is at a suitable angle.

[0101] When the user is in a resting state, the backrest 5 is in a tilted state, and the headrest can be taken out from the placement frame 407 and clamped between the upper and lower rubber rods 403. The left and right sides of the headrest are in contact with multiple positioning rods 405 to strengthen the definition of the headrest position.

[0102] Working principle: Before using the device, the user sits on the seat plate 1 and adjusts the adjustment mechanism 3 and the connecting mechanism 2 to adjust the height of the seat plate 1.

[0103] In the initial state, the top of the connecting rod 2024 falls on the top plate 2026, the slider 2023 is at the lowest position in the fixed frame 2022, and the slider 2023 does not contact the bottom of the fixed frame 2022, the contact pad 2028 is in the channel 2029 and contacts the bottom of the seat plate 1, and the bottom pad 201 at the bottom of the seat plate 1 contacts the top plate 2026.

[0104] When it is necessary to adjust the seat plate 1 upward, the first lifting rod 2025 is opened one by one to increase the stroke. The first lifting rod 2025 drives the adjusting mechanism 3 to move upward, the adjusting mechanism 3 drives the slider 2023 to move upward, the slider 2023 drives the connecting rod 2024 to move upward, and the connecting rod 2024 drives the seat plate 1 to move upward, thereby adjusting the upward height of the seat plate 1.

[0105] When it is necessary to adjust the seat plate 1 downward, the first lifting rod 2025 is adjusted successively to reduce a stroke. The first lifting rod 2025 drives the adjusting mechanism 3 to move downward, the adjusting mechanism 3 drives the slider 2023 to move downward, the slider 2023 drives the connecting rod 2024 to move downward, and the connecting rod 2024 drives the seat plate 1 downward, thereby adjusting the downward height of the seat plate 1.

[0106] In the initial state, the first lifting rod 2025 is in the initial state, and the second push rod 306 is in the open state. At this time, the support plate 307 is in the fixed frame 2022, and the upper surface of the support plate 307 contacts the bottom of the slider 2023. The second lifting rod 302 is in the initial state, and the first push rod 304 is in the open state. At this time, the locking plate 305 is in the fixed frame 2022, and the lower surface of the locking plate 305 contacts the top of the slider 2023.

[0107] When the height of the seat plate 1 needs to be adjusted, the stroke of the first lifting rod 2025 is adjusted. The first lifting rod 2025 drives the first frame 301, the second lifting rod 302 and the second frame 303 to move. The first frame 301 drives the second push rod 306 and the support plate 307 to move. The second frame 303 drives the first push rod 304 and the positioning plate 305 to move. The support plate 307 and the positioning plate 305 drive the slider 2023 to move, thereby adjusting the height of the slider 2023.

[0108] When the first lifting rod 2025 stops moving, the locking plate 305 and the supporting plate 307 lock the position of the slider 2023, thereby locking the height of the seat plate 1.

[0109] Then, according to the user's sitting posture and habits, the backrest mechanism 4 is adjusted to adjust the angle of the backrest 5. The third lifting rod 409 is adjusted to the corresponding stroke. During the lifting process, the third lifting rod 409 drives the joint 402 to move. After the joint 402 is deformed, it drives the backrest 5 and the rotating shaft 401 to deflect, so that the backrest 5 is at a suitable angle.

[0110] When the user is in a resting state, the backrest 5 is in a tilted state, and the headrest can be taken out from the placement frame 407 and clamped between the upper and lower rubber rods 403. The left and right sides of the headrest are in contact with multiple positioning rods 405 to strengthen the definition of the headrest position.

[0111] When the device is not in use, adjust the second push rod 306 to a reciprocating motion state. The second push rod 306 drives the support plate 307 to repeatedly enter and exit the first frame 301. The top of the support plate 307 contacts the scraper 311 at the bottom of the cross plate 310. The scraper 311 drives the impurities and dust in the second friction strip to move, thereby promoting the impurities and dust to detach from the second friction strip at the top of the support plate 307.

[0112] When the device is not in use, adjust the first push rod 304 to a reciprocating motion state, and the first push rod 304 drives the locking plate 305 to repeatedly enter and exit the second frame 303. The top of the locking plate 305 contacts the scraper 311 at the bottom of the horizontal plate 310. The scraper 311 drives the impurities and dust in the first friction strip to move, thereby promoting the impurities and dust to separate from the first friction strip at the top of the locking plate 305.

[0113] Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative work should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. An X-shaped table leg lifting chair, comprising a seat plate (1), characterized in that: A backrest (5) is provided on the top of the seat plate (1); A connecting mechanism (2), the connecting mechanism (2) being arranged at the bottom of the seat plate (1), the connecting mechanism (2) comprising an X-shaped table leg (204), a sliding assembly (202) being arranged at the top of the X-shaped table leg (204), and the sliding assembly (202) being connected to the seat plate (1); An adjusting mechanism (3), the adjusting mechanism (3) being connected to the connecting mechanism (2), the adjusting mechanism (3) comprising a support plate (307) and a locking plate (305), the support plate (307) and the locking plate (305) being used to control the lifting and lowering of the sliding assembly (202); A backrest mechanism (4) is provided outside the backrest (5), and the backrest mechanism (4) is used to adjust the angle of the backrest (5).

2. The X-shaped leg lift chair according to claim 1, characterized in that: The connecting mechanism (2) further comprises: A bottom pad (201), the bottom pad (201) being mounted on the bottom of the seat plate (1), the bottom pad (201) being made of rubber; A connecting plate (203) is installed on the top of the X-shaped table leg (204), and the connecting plate (203) is connected to the sliding assembly (202).

3. The X-shaped leg lift chair according to claim 2, characterized in that: The sliding assembly (202) includes: An adjusting column (2021), the adjusting column (2021) being mounted on the top of the connecting plate (203), and two adjusting columns (2021) being provided and symmetrically arranged; A fixing frame (2022), wherein two fixing frames (2022) are provided, and the two fixing frames (2022) are respectively mounted on the top of the two adjustment columns (2021); A slider (2023), wherein the slider (2023) is slidably connected to the interior of the fixed frame (2022); A connecting rod (2024) is installed on the top of the slider (2023), the connecting rod (2024) passes through the interior of the fixed frame (2022), and the connecting rod (2024) is connected to the bottom plate.

4. The X-shaped leg lift chair according to claim 3, characterized in that: The sliding assembly (202) further includes: A top plate (2026), the top plate (2026) being mounted on the top of the fixing frame (2022), and the connecting rod (2024) passing through the interior of the top plate (2026); A first lifting rod (2025), wherein the first lifting rod (2025) is mounted on the top of the connecting plate (203), and the first lifting rod (2025) is connected to the adjusting mechanism (3).

5. The X-shaped leg lift chair according to claim 4, characterized in that: The sliding assembly (202) further includes: A channel (2029), wherein the channel (2029) is opened inside the top plate (2026), and two channels (2029) are opened and symmetrically arranged; A lifting plate (2027) is installed at the bottom of the top plate (2026), and a contact pad (2028) is installed on the top of the lifting plate (2027).

6. The X-shaped leg lift chair according to claim 4, characterized in that: The regulating mechanism (3) comprises: A first frame (301), the first frame (301) being mounted on the top of the first lifting rod (2025); A second push rod (306), the second push rod (306) is installed inside the first frame (301), two second push rods (306) are provided and symmetrically arranged, and the two second push rods (306) are respectively connected to the support plate (307); a second lifting rod (302), the second lifting rod (302) being installed on the top of the first frame (301); a second frame (303), the second frame (303) being mounted on the top of the second lifting rod (302); A first push rod (304), the first push rod (304) is installed inside the second frame (303), two first push rods (304) are provided and are symmetrically arranged, and the two first push rods (304) are respectively connected to the locking plate (305).

7. The X-shaped leg lift chair according to claim 6, characterized in that: The regulating mechanism (3) further comprises: Adjustment rods (308), wherein four adjustment rods (308) are provided, two of which are installed on the top of the first frame (301), and the other two of which are installed on the bottom of the second frame (303); A bent rod (309), the bent rod (309) being mounted outside the adjusting rod (308); A transverse plate (310) is installed on the outside of the bent rod (309). A scraper (311) is installed on the outside of the transverse plate (310). A plurality of scrapers (311) are provided and are evenly arranged.

8. The X-shaped leg lift chair according to claim 1, characterized in that: The backrest mechanism (4) comprises: A rotating shaft (401), the rotating shaft (401) being mounted inside the seat plate (1), the rotating shaft (401) being connected to the backrest (5); An extension plate (408), the extension plate (408) being mounted on the outside of the seat plate (1), and a third lifting rod (409) being mounted on the top of the extension plate (408); A joint (402), the joint (402) is connected to the third lifting rod (409), and the joint (402) is connected to the backrest (5).

9. The X-shaped leg lift chair according to claim 8, characterized in that: The backrest mechanism (4) further comprises: a rubber rod (403), the rubber rod (403) being mounted on the outside of the backrest (5), and a plurality of the rubber rods (403) being provided; A railing (404), the railing (404) being mounted on the outside of the backrest (5), a locking rod (405) being mounted on the outside of the railing (404), and a plurality of the locking rods (405) being provided; An armrest (406) is installed on the top of the seat plate (1). Two armrests (406) are provided, and a placement frame (407) is installed on the outside of one of the armrests (406).

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