SWIVEL CHAIR DEVICE HAVING ASCENDING AND DESCENDING FUNCTION

Abstract

A swivel chair device having an ascending and descending function. The swivel chair device comprises a support pipe (1), a shaft sleeve (5), a spline pipe (6) and a telescopic cylinder (7). The shaft sleeve (5) is fixedly arranged in the support pipe (1). The spline pipe (6) is arranged in the support pipe (1), the bottom end of the spline pipe (6) being higher than the bottom end of the support pipe (1), and the top end of the spline pipe (6) being fixedly connected to the shaft sleeve (5) so as to be connected to the support pipe (1) to form a non-rotating body. A rotary reset mechanism, which elastically connects the telescopic cylinder (7) to the spline pipe (6) for driving the telescopic cylinder (7) that has been rotated at any angle to be automatically reset, is further arranged in the spline pipe (6).

Claims

1. A swivel chair device having ascending and descending function, comprising: a support pipe (1), a shaft sleeve (5), a spline pipe (6), and a telescopic cylinder (7), wherein the shaft sleeve (5) is fixedly arranged in the support pipe (1), wherein the spline pipe (6) is arranged in the support pipe (1), wherein a bottom end of the spline pipe (6) is higher than a bottom end of the support pipe (1), wherein a top end of the spline pipe (6) is fixedly connected to the shaft sleeve (5) so as to be connected to the support pipe (1) to form a non-rotating body, wherein the telescopic cylinder (7) is arranged in the spline pipe (1), wherein the cylinder body of the telescopic cylinder (7) is rotatably connected to the shaft sleeve (5) in an ascending and descending mode, wherein an ascending and descending shaft (7.2) of the telescopic cylinder (7) vertically passes through the lower portion of the spline pipe (6), and wherein a rotary reset mechanism, which elastically connects the telescopic cylinder (7) to the spline pipe (6) for driving the telescopic cylinder (7) that has been rotated at any angle to be automatically reset, is further arranged in the spline pipe (6).

2. The swivel chair device having ascending and descending function of claim 1, wherein the shaft sleeve (5) is connected to a top end of the support pipe (1) in a hanging mode through an outer fold ring (5.1) arranged at the top of the shaft sleeve (5) and is fixedly connected to a side wall of the support pipe (1) through a pin (9).

3. The swivel chair device having ascending and descending function of claim 1, wherein the internal splines of the spline pipe (6) are engaged with the external splines arranged at the bottom of the shaft sleeve (5).

4. The swivel chair device having ascending and descending function of claim 1, wherein the telescopic cylinder (7) is movably hung in a sleeve cavity formed in the top of the shaft sleeve (5) through a convex rib ring (7.11) arranged on an outer wall of a cylinder body (7.1).

5. The swivel chair device having ascending and descending function of claim 1, wherein the rotary reset mechanism comprises: a reset pipe (10), a driving pipe (11), a pipe sleeve (12) and a spring (13), wherein the reset pipe (10) is fixed to the exposed portion of the ascending and descending shaft (7.2) of the telescopic cylinder (7) in a sleeving mode, wherein the pipe wall of the reset pipe (10) is longitudinally provided with a through hole having a closed upper end and a lower end passing through a bottom end of the reset pipe (10), wherein the driving pipe (11) is movably arranged in the reset pipe (10), wherein an outer wall of the driving pipe (11) is provided with a transverse shaft (11.1) that is exposed outside the through hole (10.1) and capable of moving up and down along the through hole (10.1), wherein the transverse shaft (11.1) is provided with a ball bearing (17) capable of rolling circumferentially along an inclined bottom surface of the pipe sleeve (12), wherein the pipe sleeve (12) is movably sleeved on the periphery of the reset pipe (10) and is in contact with the ball bearing (17) through the inclined bottom surface of the pipe sleeve (12), thereby enabling the ball bearing (17) to roll along the circumferential direction of the inclined bottom surface, wherein the outer splines of the pipe sleeve (12) are further engaged with the internal splines of the spline pipe, so that the pipe sleeve (12) is longitudinally movable but fixedly connected to the spline pipe (6) in the circumferential direction, wherein the spring (13) is arranged in the reset pipe (10) below the driving pipe (11) and elastically supports the driving pipe (11) upwards, thereby propelling the ball bearing (17) to clamp into a high point of the inclined bottom surface of the pipe sleeve (12), and wherein in this way, the reset pipe (10) at any angle is propelled to automatically reset, thereby propelling the telescopic cylinder (7) to automatically reset.

6. The swivel chair device having ascending and descending function of claim 5, wherein the outer wall of the driving pipe (11) below the transverse shaft (11.1) is provided with a convex plate (11.2) movably penetrating out from the through hole (10.1), wherein the convex plate (11.2) is provided with a reinforcing rod (14) for improving the structural strength of the transverse shaft (11.1), wherein the reinforcing rod (14) is a vertically arranged flat rod, wherein a wide surface of the reinforcing rod (14) is flatly attached to an outer end surface of the convex plate (11.2) and is fixedly connected to the convex plate (11.2) through a first screw (15), wherein the bottom of the reinforcing rod (14) is clamped in a clamping groove (11.2) formed in the outer end surface of the convex plate (11.2) through a clamping head (14.1) arranged at a bottom end of the reinforcing rod (14), and wherein the top of the reinforcing rod (14) is fixedly connected to an outer end surface of the transverse shaft (11.1) through a second screw (16), so that the transverse shaft (11.1) and the convex plate (11.2) are fixedly connected into a whole.

7. The swivel chair device having ascending and descending function of claim 5, wherein a top end of the spring (13) extends into the interior of the driving pipe (11) and supports an inner top wall of the driving pipe (11), wherein a bottom end of the spring (13) abuts against a spring support member (19) arranged at the bottom of the reset pipe (10), and wherein the spring support member (19) is an end cover, which is welded to a bottom end of the reset pipe (10) for sealing the reset pipe (10) and a bottom opening of the through hole (10.1).

8. The swivel chair device having ascending and descending function of claim 1, wherein the support pipe (1) is vertically fixedly mounted on the base (2), wherein a support block (8) is arranged in the support pipe (1) below the spline pipe (6), wherein the supporting block (8) is spaced from the base (2) and is fixedly connected to the base (2), wherein a bottom end of the ascending and descending shaft (7.2) of the telescopic cylinder (7) is movably arranged in a central hole of the support block (8), and wherein the ascending and descending shaft (7.2) is movably connected to the support block (8) by means of a stop block (20) and a stop piece (21) arranged above and below the support block (8), so that the cylinder body (7.1) of the telescopic cylinder (7) is rotatably connected to the base (2) in an ascending and descending mode.

9. The swivel chair device having ascending and descending function of claim 1, wherein the swivel chair further comprises an outer pipe (3) and a seat plate (4) fixedly mounted at the top of the outer pipe (3), wherein the outer pipe (3) is movably sleeved on the support pipe (1) from above, wherein the seat plate (4) is fixedly connected to the top of the cylinder body of the telescopic cylinder (7), and wherein the top of the telescopic cylinder (7) is further provided with a control rod (7.3) that is exposed outside the outer pipe (3) and is rotatably connected to the outer pipe (3).

10. The swivel chair device having ascending and descending function of claim 9, wherein a seat (22) is arranged on a top surface of the seat plate (4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG. 1 is a schematic diagram illustrating an overall structure of the present invention;

[0016] FIG. 2 is a schematic diagram illustrating a partial structure of the present invention;

[0017] FIG. 3 is another schematic diagram illustrating a partial structure of the present invention:

[0018] FIG. 4 is a schematic diagram illustrating the connecting structure of the telescopic cylinder and the rotary reset mechanism of the present invention:

[0019] FIG. 5 is a sectional view illustrating the connecting structure of the rotary reset mechanism and the telescopic cylinder of the present invention:

[0020] FIG. 6 is an external view illustrating the connecting structure of the rotary reset mechanism and the telescopic cylinder of the present invention:

[0021] FIG. 7 is a schematic diagram illustrating the structure of the rotary reset mechanism of the present invention; and

[0022] FIG. 8 is an explosive view of FIG. 7.

DETAILED DESCRIPTION

[0023] Drawings and detailed embodiments are combined hereinafter to further elaborate the technical solution of the present invention.

[0024] Referring to FIGS. 1-8, a swivel chair device having an ascending and descending function comprises a support pipe 1, a base 2, an outer pipe 3, a seat plate 4, a shaft sleeve 5, a spline pipe 6 and a telescopic cylinder 7.

[0025] The support pipe 1 is vertically and fixedly mounted on the base 2 through a bottom end of the support pipe 1.

[0026] The shaft sleeve 5 is connected to a top end of the support pipe 1 in a hanging mode through an outer fold ring 5.1 arranged at the top of the shaft sleeve 5 and is fixedly connected to a side wall of the support pipe 1 through a pin 9.

[0027] The spline pipe 6 is arranged in the support pipe 1. The internal splines of the spline pipe 6 are engaged with the external splines arranged at the bottom of the shaft sleeve 5, thereby enabling the shaft sleeve 5 to be fixedly connected to the support pipe 1.

[0028] The seat plate 4 is horizontally fixedly mounted at the top of the outer pipe 3, and the outer pipe 3 is movably sleeved on the periphery of the support pipe 1 from above, thereby allowing the seat plate 4 to be rotatably connected to the support pipe 1 in an ascending and descending mode.

[0029] The telescopic cylinder 7 comprises a cylinder body 7.1, an ascending and descending shaft 7.2 that is arranged in the cylinder body 7.1 and partially exposed outside the bottom of the cylinder body 7.1, and a control rod 7.3 arranged at the top of the cylinder body 7.1. The cylinder body 7.1 is movably arranged in the spline pipe 6 and is movably hung in a sleeve cavity formed in the top of the shaft sleeve 5 through a convex rib ring 7.11 arranged on an outer wall of the cylinder body 7.1, thereby enabling the telescopic cylinder 7 to be rotatably connected to the support pipe 1 in an ascending and descending mode. The top of the cylinder body 7.1 is exposed above the support pipe 1 and is fixedly connected to the seat plate 4, so that the outer pipe 3 and the seat plate 4 are rotatably connected to the support pipe 1, the ascending and descending shaft 7.2 vertically passes through a lower portion of the spline pipe 6, and the control rod 7.3 is exposed along a via hole formed in a pipe wall of the outer pipe 3.

[0030] A support block 8 is arranged in the support pipe 1 below the spline pipe 6. The supporting block 8 is spaced from the base 2 and is fixedly connected to the base 2. A bottom end of the ascending and descending shaft 7.2 of the telescopic cylinder 7 is movably arranged in a central hole of the support block 8. The ascending and descending shaft 7.2 is movably connected to the support block 8 by means of a stop block 20 and a stop piece 21 arranged above and below the support block 8, so that the cylinder body 7.1 of the telescopic cylinder 7 is rotatably connected to the base 2 in an ascending and descending mode.

[0031] A rotary reset mechanism, which elastically connects the telescopic cylinder 7 to the spline pipe 6 for driving the telescopic cylinder 7 that has been rotated at any angle to be automatically reset, is further arranged in the spline pipe 6. The rotary reset mechanism comprises a reset pipe 10, a driving pipe 11, a pipe sleeve 12 and a spring 13.

[0032] The reset pipe 10 is fixed to the exposed portion of the ascending and descending shaft 7.2 of the telescopic cylinder 7 in a sleeving mode. The pipe wall of the reset pipe 10 is longitudinally provided with a through hole having a closed upper end and a lower end passing through a bottom end of the reset pipe 10.

[0033] The driving pipe 11 is movably arranged in the reset pipe 10. An outer wall of the driving pipe 11 is provided with a transverse shaft 11.1 that is exposed outside the through hole 10.1 and capable of moving up and down along the through hole 10.1. The transverse shaft 11.1 is provided with a ball bearing 17 capable of rolling circumferentially along an inclined bottom surface of the pipe sleeve 12. The outer wall of the driving pipe 11 below the transverse shaft 11.1 is provided with a convex plate 11.2 movably penetrating out from the through hole 10.1, and the convex plate 11.2 is provided with a reinforcing rod 14 for improving the structural strength of the transverse shaft 11.1. The reinforcing rod 14 is a vertically arranged flat rod. A wide surface of the reinforcing rod 14 is flatly attached to an outer end surface of the convex plate 11.2 and is fixedly connected to the convex plate 11.2 through a first screw 15. The bottom of the reinforcing rod 14 is clamped in a clamping groove 11.2 formed in the outer end surface of the convex plate 11.2 through a clamping head 14.1 arranged at a bottom end of the reinforcing rod 14. The top of the reinforcing rod 14 is fixedly connected to an outer end surface of the transverse shaft 11.1 through a second screw 16, so that the transverse shaft 11.1 and the convex plate 11.2 are fixedly connected into a whole. In this way, the ball bearing 17 is stably limited on the transverse shaft 11.1 and the structural strength of the transverse shaft 11.1 is significantly improved.

[0034] The pipe sleeve 12 is movably sleeved on the periphery of the reset pipe 10 and is in contact with the ball bearing 17 through the inclined bottom surface of the pipe sleeve 12, thereby enabling the ball bearing 17 to roll along the circumferential direction of the inclined bottom surface. The outer splines of the pipe sleeve 12 are further engaged with the internal splines of the spline pipe, so that the pipe sleeve 12 is longitudinally movable but fixedly connected to the spline pipe 6 in the circumferential direction. A high point of the inclined bottom surface of the pipe sleeve 12 is provided with a concave arc groove 12.1, and a low point of the inclined bottom surface is provided with a convex arc rib 12.2.

[0035] The spring 13 is arranged in the reset pipe 10 below the driving pipe 11, and a top end of the spring 13 extends into the interior of the driving pipe 11 and supports an inner top wall of the driving pipe 11. A bottom end of the spring 13 abuts against a spring support member 19 arranged at the bottom of the reset pipe 10 for elastically supporting the driving pipe 11 upwards. In this way, the ball bearing 17 is propelled to clamp into the concave arc groove 12.1 of the pipe sleeve 12, thereby propelling the driving pipe 11 and the reset pipe 10 at any angle to automatically reset. Thus, the telescopic cylinder 7 is propelled to automatically reset as well. The spring support member 19 is an end cover, which is welded to a bottom end of the reset pipe 10 for sealing the reset pipe 10 and a bottom opening of the through hole 10.1, thereby respectively sealing the driving pipe 11 and the transverse shaft 11.1 in the reset pipe 10 and the through hole 10.1.

[0036] A seat 22 is mounted on a top surface of the seat plate 4. When a user sits on the seat 22 and unlocks the control rod 7.3, the ascending and descending shaft 7.2 of the telescopic cylinder 7 automatically contracts under the action of gravity, and the cylinder body 7.1 descends accordingly to propel the outer pipe 3, the seat plate 4 and the seat 22 to descend relative to the support pipe 1 and the spline pipe 6. After the user leaves the seat 22, the ascending and descending shaft 7.2 of the telescopic cylinder 7 automatically ascends under the action of internal pressure, thereby propelling the cylinder body 7.1, the outer pipe 3, the seat plate 4 and the seat 22 to ascend. By locking the control rod 7.3, the cylinder body 7.1, the outer pipe 3, the seat plate 4 and the seat 22 may be stopped at a required height.

[0037] When the user sits on the seat 22 to propel the seat 22 to rotate at any angle, the seat plate 4, the outer pipe 3 and the telescopic cylinder 7 rotate therewith. The telescopic cylinder 7 is capable of propelling the reset pipe 10 and the driving pipe 11 to rotate downwards. At this point, the ball bearing 17 rolls along the inclined bottom surface of the pipe sleeve 12, and the spring 13 is compressed. After the user leaves the seat 22, the spring 13 is released to propel the driving pipe 11 and the reset pipe 10 to rotate upwards. At this point, the ball bearing 17 automatically slides into the concave arc groove 12.1 at the bottom end of the pipe sleeve 11 and resets, and the reset pipe 10 propel the telescopic cylinder 7, the outer pipe 3, the seat plate 4 and the seat 22 to reset.