Office chair capable of being adjusted and rotated up and down

Abstract

The utility model discloses a rotatable office chair that can be adjusted up and down, including: base, backrest, armrest and lifting leg frame, base and backrest are connected through rotating shaft, the top of base is provided with cushion frame, the cushion frame and base are connected through adjusting mechanism. According to the rotary office chair capable of being adjusted up and down, the base, the backrest, the armrests, the lifting supporting leg frame, the seat cushion frame, the adjusting mechanism, the adjusting mechanism, the connecting block and the fixing frame are matched with one another, an adjusting motor rotates to drive an adjusting gear to rotate, a movable rack is driven to move in a movable groove, the seat cushion frame is supported, and the seat cushion frame can be adjusted up and down. According to the office chair, the angle and height of the seat cushion frame are adjusted, meanwhile, the backrest is pulled, the angle of the backrest is adjusted, the backrest is supported by the telescopic rod, and meanwhile, the height of the lifting supporting leg frame can be adjusted according to different use requirements, so that the chair can be adjusted to the most comfortable angle of a user, and the comfort degree of the office chair is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an office chair which can be adjusted up and down and rotated. Background Art

[0002] Office chairs refer to various chairs that are used for convenience in daily work and social activities. Office partners divide office chairs into narrow and broad definitions. The narrow definition of office chairs refers to the backrest chairs that people sit on when they work on their desks. The broad definition of office chairs refers to all chairs used in offices, including executive chairs, mid-shift chairs, reception chairs, staff chairs, conference chairs, visitor chairs, training chairs, etc.

[0003] For example, publication number CN213940214U discloses an office chair that is convenient for adjusting the angle, comprising a seat plate of the office chair, a telescopic rod is provided at the lower end of the seat plate, a foot support is provided at the lower end of the telescopic rod, a hinge rod is fixedly provided at one end of the seat plate, the seat plate is hinged to a back plate through the hinge rod, a neck pillow is provided at the upper end of the back plate, and an angle adjustment device is provided on the hinge rod. This office chair that is convenient for adjusting the angle is provided with an angle adjustment device that is convenient for adjusting the angle. When the angle needs to be adjusted, the rotating rod is rotated to facilitate the adjustment of the back plate angle.

[0004] However, the office chair disclosed above can only adjust the reclining angle of the back panel, and the seat panel is fixed and cannot be adjusted. Therefore, the seat panel cannot be adjusted according to the adjustment of the back panel. At the same time, the support position of the waist cannot be adjusted, so the backrest is easily damaged after being subjected to greater pressure, and the user's comfort cannot be guaranteed. Therefore, it is necessary to propose an office chair that can be adjusted up and down and rotated. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model provides an office chair which can be adjusted up and down and rotated.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An office chair that can be adjusted up and down and rotated, comprising: a base, a backrest, armrests and a lifting leg support frame, wherein the base and the backrest are connected via a rotating shaft, a seat cushion frame is arranged above the base, and the seat cushion frame and the base are connected via an adjusting mechanism;

[0008] An adjustment mechanism, the adjustment mechanism is arranged inside the backrest, and the adjustment mechanism comprises:

[0009] A lumbar support block, the lumbar support block is arranged inside the backrest, a wedge block is fixedly connected to the right side of the lumbar support block, and a return spring is fixedly connected between the lumbar support block and the inner wall of the backrest;

[0010] An adjustment bin is fixedly connected to the right side of the backrest, a lifting threaded rod frame is fixedly connected to the side of the adjustment bin, a lifting motor is fixedly connected to the top of the lifting threaded rod frame, a lifting block is threadedly connected to the threaded rod inside the lifting threaded rod frame, two lifting blocks are fixedly connected by an extrusion block, and the lifting block is connected to the armrest by a telescopic rod.

[0011] The above, wherein the regulating mechanism comprises:

[0012] A movable groove is provided at the top of the base and the bottom of the cushion frame, and a movable block is provided inside the movable groove at the bottom of the cushion frame;

[0013] A connecting plate, the connecting plate connects the movable blocks, four guide rods are fixedly connected to the bottom of the connecting plate, the surfaces of the guide rods are connected through a bottom bracket, and the guide rods and the bottom bracket are connected through a buffer spring;

[0014] A movable rack, the movable rack can move in a movable groove at the top of the base, a mounting block is fixedly connected to the top of the movable rack, and the mounting block is connected to the bottom bracket through a rotating shaft;

[0015] An adjusting gear, wherein the adjusting gear is arranged below the movable rack and meshes with the movable rack; and an adjusting motor, wherein the output shaft of the adjusting motor is fixedly connected to the adjusting gear.

[0016] In the above, a connecting block is fixedly connected to the bottom of the cushion frame, a fixing frame is fixedly connected to the top of the base at a position corresponding to the connecting block, and the fixing frame and the connecting block are connected via a rotating shaft.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model realizes an office chair that can be adjusted up and down and rotated by the mutual cooperation between the base, backrest, armrest, lifting leg support frame, cushion frame, adjustment mechanism, adjustment mechanism, connecting block and fixed frame. The rotation of the adjustment motor drives the adjustment gear to rotate, and the movable rack moves in the movable groove to lift the cushion frame to complete the adjustment of the angle and height of the cushion frame. At the same time, the backrest is pulled to adjust the angle of the backrest, and the telescopic rod supports the backrest. At the same time, the lifting leg support frame can be adjusted in height according to different usage requirements, so that the seat can be adjusted to the most comfortable angle for the user, which greatly improves the comfort of the office chair.

[0019] 2. In the present invention, the adjustment mechanism is driven by the lifting motor to drive the extrusion block to rise, so that the lumbar support block moves to the left to support the user's waist, thereby preventing the backrest from being easily damaged after being subjected to greater pressure and ensuring the comfort of the user.

[0020] 3. In the utility model, the buffer spring is provided to buffer the pressure on the seat cushion frame, thereby improving the comfort of the user.

[0021] 4. In the present invention, a reset spring is provided so that the wedge block can be automatically reset. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural cross-sectional view of the main view of the utility model;

[0023] Figure 2 It is a structural schematic diagram of the front view of the utility model;

[0024] Figure 3 For this utility model Figure 1 A partial enlarged view of middle A;

[0025] Figure 4 It is a three-dimensional diagram of the base, movable slot and fixed frame of the utility model;

[0026] Figure 5 It is a three-dimensional diagram of the movable block, connecting plate, guide rod and bottom bracket of the utility model.

[0027] In the figure:

[0028] 1 base, 2 backrest, 3 armrest, 4 lifting leg support frame, 5 cushion frame, 6 adjustment mechanism, 601 movable groove, 602 movable block, 603 connecting plate, 604 guide rod, 605 bottom support, 606 buffer spring, 607 movable rack, 608 mounting block, 609 adjustment gear, 610 adjustment motor, 7 adjustment mechanism, 701 lumbar support block, 702 wedge block, 703 reset spring, 704 adjustment bin, 705 lifting threaded rod frame, 706 lifting motor, 707 lifting block, 708 extrusion block, 709 telescopic rod, 8 connecting block, 9 fixing frame. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] like Figure 1-5As shown, an office chair that can be adjusted up and down and rotated includes: a base 1, a backrest 2, an armrest 3 and a lifting leg support frame 4, the lifting leg support frame 4 can be adjusted in height according to different usage requirements, the base 1 and the backrest 2 are connected by a rotating shaft, a cushion frame 5 is arranged above the base 1, and the cushion frame 5 is connected to the base 1 through an adjustment mechanism 6, and the adjustment mechanism 6 includes:

[0031] The movable groove 601 is opened at the top of the base 1 and the bottom of the cushion frame 5 , and a movable block 602 is arranged inside the movable groove 601 located at the bottom of the cushion frame 5 .

[0032] The connecting plate 603 connects the movable blocks 602. Four guide rods 604 are fixedly connected to the bottom of the connecting plate 603. The surfaces of the guide rods 604 are connected through the base 605. The guide rods 604 and the base 605 are connected through the buffer spring 606, which buffers the pressure on the cushion frame 5 and improves the comfort of the user.

[0033] The movable rack 607 can move in the movable groove 601 at the top of the base 1. The top of the movable rack 607 is fixedly connected with a mounting block 608, and the mounting block 608 is connected to the bottom bracket 605 through a rotating shaft.

[0034] Adjusting gear 609, which is arranged below the movable rack 607, meshes with the movable rack 607, and adjusts the motor 610, whose output shaft is fixedly connected with the adjusting gear 609. The adjusting motor 610 rotates to drive the adjusting gear 609 to rotate, causing the movable rack 607 to move in the movable groove 601, thereby lifting the seat cushion frame 5 and completing the adjustment of the angle and height of the seat cushion frame 5.

[0035] The adjustment mechanism 7 is arranged inside the backrest 2, and the adjustment mechanism 7 includes:

[0036] The lumbar support block 701 is arranged inside the backrest 2. A wedge block 702 is fixedly connected to the right side of the lumbar support block 701. A reset spring 703 is fixedly connected between the lumbar support block 701 and the inner wall of the backrest 2, so that the wedge block 702 can be automatically reset.

[0037] Adjustment bin 704, adjustment bin 704 is fixedly connected to the right side of the backrest 2, the side of the adjustment bin 704 is fixedly connected with a lifting threaded rod frame 705, the top of the lifting threaded rod frame 705 is fixedly connected with a lifting motor 706, the threaded rod inside the lifting threaded rod frame 705 is threadedly connected with a lifting block 707, the two lifting blocks 707 are fixedly connected by an extrusion block 708, the lifting block 707 is connected to the armrest 3 by a telescopic rod 709, the backrest 2 is turned to adjust the angle of the backrest 2, the telescopic rod 709 supports the backrest 2, and under the drive of the lifting motor 706, the extrusion block 708 is driven to rise, so that the lumbar support block 701 moves to the left to support the user's waist, thereby preventing the backrest 2 from being easily damaged after being subjected to greater pressure, ensuring the user's comfort, and allowing the seat to be adjusted to the most comfortable angle for the user, greatly improving the comfort of the office chair.

[0038] The bottom of the cushion frame 5 is fixedly connected with a connecting block 8, and the top of the base 1 is fixedly connected with a fixing frame 9 corresponding to the position of the connecting block 8. The fixing frame 9 and the connecting block 8 are connected by a rotating shaft, which is convenient for limiting the cushion frame 5.

[0039] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0040] The utility model provides an office chair that can be adjusted up and down and rotates. When in use, the adjusting motor 610 rotates to drive the adjusting gear 609 to rotate, and the movable rack 607 moves in the movable groove 601, so as to lift the cushion frame 5, complete the adjustment of the angle and height of the cushion frame 5, turn the backrest 2, adjust the angle of the backrest 2, and the telescopic rod 709 supports the backrest 2. Driven by the lifting motor 706, the squeezing block 708 is driven to rise, so that the lumbar support block 701 moves to the left to support the user's waist.

[0041] In summary, the office chair that can be adjusted up and down and rotated solves the problems mentioned in the background technology by the mutual cooperation between the base 1, the backrest 2, the armrests 3, the lifting leg support frame 4, the cushion frame 5, the adjustment mechanism 6, the adjustment mechanism 7, the connecting block 8 and the fixing frame 9.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An office chair that can be adjusted up and down and rotated, comprising: A base (1), a backrest (2), an armrest (3) and a lifting leg support frame (4), wherein the base (1) and the backrest (2) are connected via a rotating shaft, a cushion frame (5) is arranged above the base (1), and the cushion frame (5) and the base (1) are connected via an adjusting mechanism (6); An adjustment mechanism (7), wherein the adjustment mechanism (7) is arranged inside the backrest (2), and the adjustment mechanism (7) comprises: A lumbar support block (701), the lumbar support block (701) being arranged inside the backrest (2), a wedge block (702) being fixedly connected to the right side of the lumbar support block (701), and a return spring (703) being fixedly connected between the lumbar support block (701) and the inner wall of the backrest (2); An adjustment bin (704) is fixedly connected to the right side of the backrest (2); a lifting threaded rod frame (705) is fixedly connected to the side of the adjustment bin (704); a lifting motor (706) is fixedly connected to the top of the lifting threaded rod frame (705); a threaded rod inside the lifting threaded rod frame (705) is threadedly connected to a lifting block (707); two lifting blocks (707) are fixedly connected via an extrusion block (708); and the lifting block (707) is connected to the armrest (3) via a telescopic rod (709).

2. The up and down adjustable rotating office chair according to claim 1, characterized in that: The regulating mechanism (6) comprises: A movable groove (601), wherein the movable groove (601) is provided at the top of the base (1) and the bottom of the cushion frame (5), and a movable block (602) is provided inside the movable groove (601) located at the bottom of the cushion frame (5); A connecting plate (603), the connecting plate (603) connecting the movable blocks (602), four guide rods (604) being fixedly connected to the bottom of the connecting plate (603), the surfaces of the guide rods (604) being connected via a bottom bracket (605), and the guide rods (604) and the bottom bracket (605) being connected via a buffer spring (606); A movable rack (607), wherein the movable rack (607) is movable in a movable groove (601) at the top of the base (1), and a mounting block (608) is fixedly connected to the top of the movable rack (607), and the mounting block (608) is connected to the bottom bracket (605) via a rotating shaft; An adjusting gear (609), the adjusting gear (609) being arranged below the movable rack (607), the adjusting gear (609) being meshed with the movable rack (607), and an adjusting motor (610), the output shaft of the adjusting motor (610) being fixedly connected to the adjusting gear (609).

3. The up and down adjustable rotating office chair according to claim 2, characterized in that: The bottom of the cushion frame (5) is fixedly connected to a connecting block (8), and the top of the base (1) is fixedly connected to a fixing frame (9) at a position corresponding to the connecting block (8), and the fixing frame (9) and the connecting block (8) are connected via a rotating shaft.

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