Lifting type folding swivel chair

Abstract

The utility model discloses a lifting type folding swivel chair and relates to the technical field of swivel chairs, the phenomena that the lifting type folding swivel chair does not have a folding function and is inconvenient to transport are improved, the lifting type folding swivel chair comprises a seat plate, a backrest is hinged to the seat plate, an angle adjusting assembly is arranged between the seat plate and the backrest, a height adjusting assembly is arranged on the lower surface of a bottom plate, and a base is arranged on the height adjusting assembly; armrests are movably arranged on the backrest; the angle adjusting assembly comprises an adjusting sleeve fixedly connected to the outer surface of the seat plate, a connecting shaft is inserted into the adjusting sleeve, one end of the connecting shaft is fixedly connected with an adjusting cover, one side of the inner surface of the adjusting sleeve is provided with a first clamping plate, and the end, away from the adjusting cover, of the connecting shaft is fixedly connected with a second clamping plate; a spring is arranged between the side, away from the connecting shaft, of the second clamping plate and the inner surface of the adjusting sleeve, the outer surface of the adjusting sleeve is fixedly connected with an adjusting plate, one end of the adjusting plate is fixedly connected with a connecting rod, and the backrest can be folded and put down, so that the swivel chair is convenient to transport and store.

Description

Technical Field

[0001] This utility model relates to the field of swivel chair technology, and in particular to a height-adjustable folding swivel chair. Background Technology

[0002] A swivel chair is a type of computer chair or office chair. The seat can rotate, and swivel chairs offer a comfortable and healthy sitting experience depending on the occasion. They are mainly used in offices, homes, and other places where frequent movement is required. It typically consists of a headrest, backrest, seat, armrests, support rod (gas spring), swivel joint, five-star base, and casters.

[0003] The adjustable swivel chair utilizes a pneumatic lifting mechanism, using air pressure to raise and lower the chair. A rotating shaft at the bottom of the chair, along with bearings and other components, enables the chair to rotate. This rotating mechanism allows for easy adjustment of the chair's orientation, meeting various usage needs.

[0004] Traditional height-adjustable swivel chairs lack a folding function, which makes them inconvenient to transport and reduces their practicality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the problems existing in the prior art, this utility model provides a height-adjustable folding swivel chair.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a height-adjustable folding swivel chair, including a seat plate, a backrest hinged to the seat plate, an angle adjustment component provided between the seat plate and the backrest, a height adjustment component provided on the lower surface of the seat plate, a base provided on the height adjustment component, and armrests movably provided on the backrest.

[0009] An angle adjustment assembly includes an adjustment sleeve fixedly connected to the outer surface of the seat plate. A connecting shaft is inserted inside the adjustment sleeve. An adjustment cover is fixedly connected to one end of the connecting shaft. A first retaining plate is provided on one side of the inner surface of the adjustment sleeve. A second retaining plate is fixedly connected to the end of the connecting shaft away from the adjustment cover. A spring is provided between the side of the second retaining plate away from the connecting shaft and the inner surface of the adjustment sleeve. An adjustment plate is fixedly connected to the outer surface of the adjustment sleeve. A connecting rod is fixedly connected to one end of the adjustment plate, and one end of the connecting rod is connected to the backrest.

[0010] The height adjustment assembly includes an adjustment box fixedly connected to the lower surface of the seat plate, a worm gear inserted inside the adjustment box, a worm wheel movably disposed inside the adjustment box and cooperating with the worm gear, an adjustment cylinder fixedly connected to the lower surface of the adjustment box, a threaded rod fixedly connected to the outer surface of the worm wheel, a telescopic sleeve threadedly connected to the outer surface of the threaded rod, and one end of the telescopic sleeve connected to the base.

[0011] As a preferred embodiment of the height-adjustable folding swivel chair of this utility model, a connecting groove is provided on the side wall of the backrest, and the end of the connecting rod away from the adjustment plate extends into the connecting groove, and the depth of the connecting groove is greater than the length of the connecting rod.

[0012] In a preferred embodiment of the height-adjustable folding swivel chair described in this utility model, the upper surface of the adjustment box is rotatably connected to the seat plate via a pivot.

[0013] In a preferred embodiment of the lifting folding swivel chair described in this utility model, one end of the worm gear is fixedly connected to a turntable.

[0014] In a preferred embodiment of the lifting folding swivel chair described in this utility model, serrated blocks are provided on the opposite side of both the first and second card plates, and the first and second card plates are engaged with each other.

[0015] In a preferred embodiment of the height-adjustable folding swivel chair of this utility model, the inner wall of the adjusting cylinder is provided with a sliding groove, and the outer surface of the telescopic sleeve is fixedly connected with a slider. The telescopic sleeve is slidably connected to the adjusting cylinder through the slider and the sliding groove.

[0016] (III) Beneficial Effects

[0017] This utility model provides a height-adjustable folding swivel chair. It has the following beneficial effects:

[0018] 1. By pressing the adjustment cover inward with the adjustment plate through the angle adjustment component, the adjustment cover moves inward, causing the connecting shaft to move inward, thereby causing the second clamping plate to separate from the first clamping plate. When the adjustment plate is rotated, the backrest is rotated through the connecting rod. The two ends of the spring are connected to the outer surface of the second clamping plate and the inner wall of the adjustment sleeve, respectively. At this time, the spring is compressed. When the adjustment plate is released, the elastic potential energy of the spring is used to drive the second clamping plate to move outward, thereby engaging with the first clamping plate, so that the backrest can be angled and the backrest can be folded down, increasing the practicality of the device.

[0019] 2. The height adjustment component drives the worm gear to rotate by rotating the turntable, which in turn drives the worm wheel to rotate. The worm wheel drives the threaded rod to rotate, and the rotation of the threaded rod causes the telescopic sleeve to move up and down within the adjusting cylinder, thereby adjusting the distance between the seat plate and the base. This allows the swivel chair to be adjusted in height, increasing the practicality of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the height adjustment component in this utility model.

[0023] Figure 3 This is a schematic diagram of the angle adjustment component in this utility model.

[0024] Figure 4 This is a schematic diagram of the backrest structure after folding in this utility model.

[0025] In the diagram, 1. Seat plate; 2. Base; 3. Backrest; 4. Angle adjustment assembly; 401. Adjustment sleeve; 402. Adjustment cover; 403. First retaining plate; 404. Connecting shaft; 405. Second retaining plate; 406. Spring; 407. Adjustment plate; 408. Connecting rod; 5. Height adjustment assembly; 501. Adjustment box; 502. Worm gear; 503. Worm wheel; 504. Adjustment cylinder; 505. Threaded rod; 506. Telescopic sleeve; 507. Turntable; 6. Armrest. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0027] Example 1

[0028] Reference Figure 1 , Figure 3 and Figure 4 This is the first embodiment of the present utility model. This embodiment provides a height-adjustable folding swivel chair, including a seat plate 1, a backrest 3 hinged to the seat plate 1, an angle adjustment component 4 provided between the seat plate 1 and the backrest 3, a height adjustment component 5 provided on the lower surface of the seat plate 1, a base 2 provided on the height adjustment component 5, and an armrest 6 movably provided on the backrest 3.

[0029] Angle adjustment assembly 4 includes an adjustment sleeve 401 fixedly connected to the outer surface of the seat plate 1. A connecting shaft 404 is inserted inside the adjustment sleeve 401. An adjustment cover 402 is fixedly connected to one end of the connecting shaft 404. A first locking plate 403 is provided on one side of the inner surface of the adjustment sleeve 401. A second locking plate 405 is fixedly connected to the end of the connecting shaft 404 away from the adjustment cover 402. A spring 406 is provided between the side of the second locking plate 405 away from the connecting shaft 404 and the inner surface of the adjustment sleeve 401. An adjustment plate 407 is fixedly connected to the outer surface of the adjustment sleeve 401. A connecting rod 408 is fixedly connected to one end of the adjustment plate 407, and one end of the connecting rod 408 is connected to the backrest 3.

[0030] Specifically, a connecting groove is provided on the side wall of the backrest 3, and the end of the connecting rod 408 away from the adjustment plate 407 extends into the connecting groove, and the depth of the connecting groove is greater than the length of the connecting rod 408.

[0031] Furthermore, through the angle adjustment component 4, the adjustment plate 407 presses the adjustment cover 402 inward, and the adjustment cover 402 moves inward, driving the connecting shaft 404 inward, thereby causing the second locking plate 405 to separate from the first locking plate 403. When the adjustment plate 407 is rotated, the backrest 3 is rotated through the connecting rod 408. The two ends of the spring 406 are respectively connected to the outer surface of the second locking plate 405 and the inner wall of the adjustment sleeve 401. At this time, the spring 406 is compressed. When the adjustment plate 407 is released, the elastic potential energy of the spring 406 is used to drive the second locking plate 405 to move outward, thereby engaging with the first locking plate 403, so that the backrest 3 can be angled and the backrest 3 can be folded down, increasing the practicality of the device.

[0032] Example 2

[0033] Reference Figure 1 , Figure 2 and Figure 4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0034] The height adjustment assembly 5 includes an adjustment box 501 fixedly connected to the lower surface of the base plate 1. A worm gear 502 is inserted inside the adjustment box 501, and a worm wheel 503 is movably arranged inside the adjustment box 501, with the worm wheel 503 cooperating with the worm gear 502. An adjustment cylinder 504 is fixedly connected to the lower surface of the adjustment box 501. A threaded rod 505 is fixedly connected to the outer surface of the worm wheel 503. A telescopic sleeve 506 is threadedly connected to the outer surface of the threaded rod 505. One end of the telescopic sleeve 506 is connected to the base 2.

[0035] Specifically, the upper surface of the adjusting box 501 is rotatably connected to the base plate 1 via a rotating shaft, one end of the worm gear 502 is fixedly connected to the turntable 507, the first clamping plate 403 and the second clamping plate 405 are provided with serrated blocks on opposite sides, and the first clamping plate 403 and the second clamping plate 405 are engaged with each other, the inner wall of the adjusting cylinder 504 is provided with a sliding groove, the outer surface of the telescopic sleeve 506 is fixedly connected with a slider, and the telescopic sleeve 506 is slidably connected to the adjusting cylinder 504 through the slider and the sliding groove.

[0036] Furthermore, through the height adjustment component 5, the rotating turntable 507 drives the worm gear 502 to rotate, which in turn drives the worm wheel 503 to rotate. The worm wheel 503 drives the threaded rod 505 to rotate, and the rotation of the threaded rod 505 drives the telescopic sleeve 506 to move up and down within the adjusting cylinder 504, thereby adjusting the distance between the seat plate 1 and the base 2. This allows the swivel chair to be adjusted in a lifting manner, increasing the practicality of the device.

[0037] Working principle: In use, by holding the adjusting plate 407 and pressing the adjusting cover 402 inward, the adjusting cover 402 moves inward, causing the connecting shaft 404 to move inward, thereby causing the second clamping plate 405 to separate from the first clamping plate 403. Rotating the adjusting plate 407 moves it within the connecting groove via the connecting rod 408, thereby causing the backrest 3 to rotate. The two ends of the spring 406 are connected to the outer surface of the second clamping plate 405 and the inner wall of the adjusting sleeve 401, respectively. At this time, the spring 406 is compressed. When the adjusting plate 407 is released, the elastic potential energy of the spring 406 causes the second clamping plate 405 to move outward, thus separating it from the first clamping plate 403. A locking plate 403 engages with the backrest 3, allowing for angle adjustment and enabling the backrest 3 to fold down, thus increasing the device's practicality. By rotating the turntable 507, the turntable 507 drives the worm gear 502 to rotate, which in turn drives the worm wheel 503 to rotate. The worm wheel 503 drives the threaded rod 505 to rotate, and the rotation of the threaded rod 505 drives the telescopic sleeve 506 to move up and down. Through the sliding groove and the slider, the telescopic sleeve 506 can move telescopically within the adjusting cylinder 504, allowing the distance between the seat plate 1 and the base 2 to be adjusted, enabling the swivel chair to be adjusted in height, further increasing the device's practicality.

[0038] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A lifting folding swivel chair comprising a seat (1), characterized in that: A backrest (3) is hinged to the seat plate (1), an angle adjustment component (4) is provided between the seat plate (1) and the backrest (3), a height adjustment component (5) is provided on the lower surface of the seat plate (1), a base (2) is provided on the height adjustment component (5), and an armrest (6) is movably provided on the backrest (3). Angle adjustment assembly (4) includes an adjustment sleeve (401) fixedly connected to the outer surface of the seat plate (1), a connecting shaft (404) is inserted inside the adjustment sleeve (401), an adjustment cover (402) is fixedly connected to one end of the connecting shaft (404), a first locking plate (403) is provided on one side of the inner surface of the adjustment sleeve (401), a second locking plate (405) is fixedly connected to one end of the connecting shaft (404) away from the adjustment cover (402), a spring (406) is provided between the side of the second locking plate (405) away from the connecting shaft (404) and the inner surface of the adjustment sleeve (401), an adjustment plate (407) is fixedly connected to the outer surface of the adjustment sleeve (401), a connecting rod (408) is fixedly connected to one end of the adjustment plate (407), and one end of the connecting rod (408) is connected to the backrest (3); The height adjustment assembly (5) includes an adjustment box (501) fixedly connected to the lower surface of the seat plate (1). A worm gear (502) is inserted inside the adjustment box (501). A worm wheel (503) is movably arranged inside the adjustment box (501) and the worm wheel (503) cooperates with the worm gear (502). An adjustment cylinder (504) is fixedly connected to the lower surface of the adjustment box (501). A threaded rod (505) is fixedly connected to the outer surface of the worm wheel (503). A telescopic sleeve (506) is threadedly connected to the outer surface of the threaded rod (505). One end of the telescopic sleeve (506) is connected to the base (2).

2. The lift folding swivel chair of claim 1, wherein: The backrest (3) has a connecting groove on its side wall. The end of the connecting rod (408) away from the adjusting plate (407) extends into the connecting groove, and the depth of the connecting groove is greater than the length of the connecting rod (408).

3. The lift folding swivel chair of claim 1, wherein: The upper surface of the adjustment box (501) is rotatably connected to the base plate (1) via a rotating shaft.

4. The lift folding swivel chair of claim 1, wherein: One end of the worm gear (502) is fixedly connected to a turntable (507).

5. The lift folding swivel chair of claim 1, wherein: The first card plate (403) and the second card plate (405) are each provided with a serrated block on opposite sides, and the first card plate (403) and the second card plate (405) are engaged with each other.

6. The lift folding swivel chair of claim 1, wherein: The inner wall of the adjusting cylinder (504) is provided with a sliding groove, and the outer surface of the telescopic sleeve (506) is fixedly connected with a slider. The telescopic sleeve (506) is slidably connected to the adjusting cylinder (504) through the slider and the sliding groove.

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