Angle-adjustable swivel chair chassis

Abstract

The utility model relates to the technical field of swivel chair base plates, in particular to an angle-adjustable swivel chair base plate which comprises a fixed seat, an adjusting seat is rotatably connected in the fixed seat, a two-way threaded rod is rotatably connected to the adjusting seat, and a first wedge block and a second wedge block are in threaded connection with the two sides of the outer surface of the two-way threaded rod respectively. The top of the first wedge-shaped block and the top of the second wedge-shaped block are slidably connected with an adjusting block, the first wedge-shaped block and the second wedge-shaped block move to drive the adjusting block to ascend and descend, a spring is connected between the adjusting block and the adjusting base, and the top of the side, away from the bidirectional threaded rod, of the adjusting base is fixedly connected with a rotating shaft. Through the arrangement of the fixed seat, the adjusting seat, the bidirectional threaded rod, the first wedge-shaped block, the second wedge-shaped block, the adjusting block and the spring, the comfortable angle of forward leaning and backward leaning can be adjusted, the sitting comfort and flexibility are improved, complex steps and tools are not needed, and the overall stability is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of swivel chair chassis, in particular to a swivel chair chassis with adjustable angle. Background Art

[0002] A swivel chair is a type of computer chair or office chair. It is a chair whose sitting part can rotate. Swivel chairs can be divided into two types: semi-swivel chairs and full-swivel chairs. Semi-swivel chairs can rotate 90 degrees to the left and right of the front, while full-swivel chairs can rotate 360 ​​degrees.

[0003] For example, in the patent with announcement number CN220403529U, a swivel chair chassis with angle adjustment function is disclosed. In this patent, the full-range adjustment of the chair seat angle is achieved by rotating the rotating part in the installation chamber; the chair seat is fixed by the interference between the interference piece and the rotating part, thereby meeting the different usage needs of users and improving their comfort when sitting; however, in actual application, most users prefer comfortable angle adjustment of leaning forward or backward, and the full-range adjustment function increases the complexity of operation. Users need to spend more time to find and fix the angle that suits them best, which reduces the efficiency of use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an angle-adjustable swivel chair chassis, which can adjust the comfortable angles of forward and backward leaning, improve the sitting comfort and flexibility, and ensure the overall stability without complicated steps and tools.

[0005] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: an angle-adjustable swivel chair chassis, comprising a fixed seat, an adjusting seat rotatably connected inside the fixed seat, a bidirectional threaded rod rotatably connected to the adjusting seat, a first wedge block and a second wedge block are respectively threadedly connected on both sides of the outer surface of the bidirectional threaded rod, the tops of the first wedge block and the second wedge block are slidably connected with the adjusting block, the movement of the first wedge block and the second wedge block drives the adjusting block to move up and down, and a spring is connected between the adjusting block and the adjusting seat.

[0006] Furthermore, a rotating shaft is fixedly connected to the top of the adjustment seat on one side away from the bidirectional threaded rod, and the rotating shaft is rotatably connected in the fixed seat.

[0007] Furthermore, the adjustment block is slidably connected inside the adjustment seat.

[0008] Furthermore, both sides of the bottom of the adjusting block are provided with inclined grooves, and the inclined sides of the inclined grooves are provided with sliding grooves;

[0009] The tops of the first wedge-shaped block and the second wedge-shaped block are both raised to form limit blocks, and the limit blocks are slidably connected in the sliding groove.

[0010] Furthermore, a receiving groove is provided on the top of the adjusting block, the bottom of the spring is located inside the receiving groove, and the top of the spring is fixedly connected to the adjusting seat.

[0011] Furthermore, one end of the bidirectional threaded rod passes through the adjustment seat and extends to the outside of the fixing seat, and one end of the bidirectional threaded rod is fixedly sleeved with a handle.

[0012] Furthermore, an arc groove is provided on the side surface of the fixing seat, and one end of the bidirectional threaded rod is located inside the arc groove.

[0013] Furthermore, a mounting plate is fixedly connected to the top of the adjustment seat, and the mounting plate is fixedly connected to the chair seat.

[0014] Furthermore, the adjustment seat is connected to a tail plate, and the tail plate is fixedly connected to the backrest of the swivel chair.

[0015] Furthermore, a plug hole is provided at the bottom of the fixing seat, and a swivel chair gas rod is plugged into the plug hole.

[0016] By means of the above technical solution, the utility model provides a swivel chair chassis with adjustable angle, which has at least the following beneficial effects:

[0017] 1. In the utility model, by arranging a fixed seat, an adjustment seat, a bidirectional threaded rod, a first wedge block, a second wedge block, an adjustment block and a spring, the adjustment of the comfortable angles of forward and backward leaning is achieved, the sitting comfort and flexibility are improved, and no complicated steps and tools are required, thereby ensuring the overall stability.

[0018] 2. In the utility model, the lifting and lowering movement of the adjustment block can be transmitted to the adjustment seat through the spring, so that the adjustment seat can rotate on the fixed seat, and then the comfortable angle of the chair seat can be adjusted. The setting of the spring also plays a buffering role. This buffering effect can improve the user's comfort. When the swivel chair is used for a long time, the spring can effectively relieve the pressure and discomfort caused by changes in sitting posture, so that the user can maintain a more comfortable and natural sitting posture. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a bottom view of the structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the local structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the bidirectional threaded rod, adjustment block and spring structure of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the bidirectional threaded rod, the first wedge block and the second wedge block of the utility model;

[0025] Figure 6 This is a bottom view of the regulating block structure of the utility model.

[0026] In the figure: 1. fixed seat; 2. adjustment seat; 3. rotating shaft; 4. bidirectional threaded rod; 5. first wedge block; 6. second wedge block; 7. adjustment block; 8. spring; 9. receiving groove; 10. inclined groove; 11. slide groove; 12. handle; 13. arc groove; 14. mounting plate; 15. tail plate; 16. socket. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-6 , an angle-adjustable swivel chair chassis, comprising a fixed seat 1, an adjusting seat 2 is rotatably connected inside the fixed seat 1, and a bidirectional threaded rod 4 is rotatably connected to the adjusting seat 2. The bidirectional threaded rod 4 is a rod-shaped component with a bidirectional threaded structure, which can realize the transmission of force and motion in different directions by rotation. The two sides of the outer surface of the bidirectional threaded rod 4 are respectively threadedly connected with a first wedge block 5 and a second wedge block 6, and the tops of the first wedge block 5 and the second wedge block 6 are slidably connected with an adjusting block 7. The first wedge block 5 and the second wedge block 6 move to drive the adjusting block 7 to move up and down. A spring 8 is connected between the adjusting block 7 and the adjusting seat 2 to realize the adjustment of the comfortable angle of forward and backward leaning, improve the comfort and flexibility of sitting, and do not require complicated steps and tools, ensure the overall stability, and the spring 8 can also play a buffering role, further improving the comfort of the user when sitting.

[0029] See also Figure 2 and Figure 3 The top of the adjusting seat 2 away from the bidirectional threaded rod 4 is fixedly connected with a rotating shaft 3, and the rotating shaft 3 is rotatably connected in the fixed seat 1. The rotating shaft 3 serves as a connection point between the adjusting seat 2 and the fixed seat 1, allowing the adjusting seat 2 to rotate around it. By rotating the adjusting seat 2, the angle of the chair seat forward or backward can be adjusted to meet the user's sitting posture requirements.

[0030] The adjustment block 7 is slidably connected to the inside of the adjustment seat 2. An arc-shaped slideway (not shown) is provided inside the adjustment seat 2, and the adjustment block 7 is slidably connected to the arc-shaped slideway. The sliding path of the adjustment block 7 inside the adjustment seat 2 is fixed. Due to the support and restriction of the adjustment seat 2, the stability of the seat during the forward or backward angle adjustment is guaranteed.

[0031] See also Figure 5 and Figure 6 , both sides of the bottom of the adjustment block 7 are provided with inclined grooves 10, and the inclined sides of the inclined grooves 10 are provided with slide grooves 11; the tops of the first wedge block 5 and the second wedge block 6 are both raised to form limit blocks, and the limit blocks are slidably connected in the slide grooves 11. By sliding the limit blocks in the slide grooves 11, the lifting and lowering movement of the adjustment block 7 can be controlled. Due to the guiding effect of the slide grooves 11, the lifting and lowering trajectory of the adjustment block 7 is more stable, and the angle adjustment of the seat forward or backward is realized.

[0032] See also Figure 4 The top of the adjustment block 7 is provided with a receiving groove 9, the bottom of the spring 8 is located inside the receiving groove 9, and the top of the spring 8 is fixedly connected to the adjustment seat 2, which can effectively prevent the spring 8 from deflecting or shaking during the working process, ensuring the stable support of the spring 8. The setting of the spring 8 also plays a buffering role, which can improve the comfort of the user. When using the swivel chair for a long time, the spring 8 can effectively relieve the pressure and discomfort caused by the change of sitting posture, so that the user can maintain a more comfortable and natural sitting posture.

[0033] See also Figure 1 and Figure 2 One end of the bidirectional threaded rod 4 passes through the adjustment seat 2 and extends to the outside of the fixed seat 1. One end of the bidirectional threaded rod 4 is fixedly sleeved with a handle 12. The setting of the handle 12 allows the user to directly adjust the bidirectional threaded rod 4 by rotating the handle 12, thereby achieving fine adjustment of the chair seat angle.

[0034] See also Figure 1 and Figure 2 The side of the fixing seat 1 is provided with an arc groove 13, and one end of the bidirectional threaded rod 4 is located inside the arc groove 13. The setting of the arc groove 13 allows the bidirectional threaded rod 4 to move inside it, thereby providing a more flexible adjustment range.

[0035] See also Figure 1 and Figure 2 The top of the adjustment seat 2 is fixedly connected with a mounting plate 14, which is fixedly connected to the seat. The adjustment seat 2 is connected with a tail plate 15, which is fixedly connected to the backrest of the swivel chair. The bottom of the fixed seat 1 is provided with a socket 16, and a swivel chair gas rod is plugged into the socket 16. By operating the swivel chair gas rod, the height of the swivel chair can be adjusted to meet the different usage requirements of users.

[0036] Working principle: When the seat angle needs to be adjusted, the bidirectional threaded rod 4 is rotated through the handle 12. The rotation of the bidirectional threaded rod 4 causes the first wedge block 5 and the second wedge block 6 to move in relative or opposite directions, thereby causing the adjustment block 7 to rise or fall. The lifting and lowering movement of the adjustment block 7 drives the adjustment seat 2 to rotate on the fixed seat 1 through the spring 8, thereby adjusting the comfortable angle of the seat to lean forward or backward, ensuring that the seat can stably maintain the desired angle after the adjustment is completed, and the spring 8 can also play a buffering role, thereby improving the user's comfort when sitting.

[0037] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] 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 these 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 angle-adjustable swivel chair chassis, comprising a fixed seat (1), characterized in that: The fixing seat (1) is rotatably connected to an adjusting seat (2), and a bidirectional threaded rod (4) is rotatably connected to the adjusting seat (2). The first wedge block (5) and the second wedge block (6) are respectively threadedly connected on both sides of the outer surface of the bidirectional threaded rod (4). The tops of the first wedge block (5) and the second wedge block (6) are slidably connected to an adjusting block (7). The first wedge block (5) and the second wedge block (6) move to drive the adjusting block (7) to move up and down. A spring (8) is connected between the adjusting block (7) and the adjusting seat (2).

2. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: A rotating shaft (3) is fixedly connected to the top of the adjusting seat (2) on the side away from the bidirectional threaded rod (4), and the rotating shaft (3) is rotatably connected in the fixing seat (1).

3. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: The adjustment block (7) is slidably connected inside the adjustment seat (2).

4. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: Both sides of the bottom of the adjusting block (7) are provided with inclined grooves (10), and the inclined sides of the inclined grooves (10) are provided with sliding grooves (11); The tops of the first wedge block (5) and the second wedge block (6) are both raised to form limit blocks, and the limit blocks are slidably connected in the slide groove (11).

5. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: The top of the adjusting block (7) is provided with a receiving groove (9), the bottom of the spring (8) is located inside the receiving groove (9), and the top of the spring (8) is fixedly connected to the adjusting seat (2).

6. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: One end of the bidirectional threaded rod (4) passes through the adjustment seat (2) and extends to the outside of the fixing seat (1), and one end of the bidirectional threaded rod (4) is fixedly sleeved with a handle (12).

7. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: An arc-shaped groove (13) is provided on the side surface of the fixing seat (1), and one end of the bidirectional threaded rod (4) is located inside the arc-shaped groove (13).

8. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: The top of the adjustment seat (2) is fixedly connected to a mounting plate (14), and the mounting plate (14) is fixedly connected to the chair seat.

9. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: The adjustment seat (2) is connected to a tail plate (15), and the tail plate (15) is fixedly connected to the backrest of the swivel chair.

10. The angle-adjustable swivel chair chassis according to claim 1, characterized in that: The bottom of the fixing seat (1) is provided with an insertion hole (16), and the interior of the insertion hole (16) is plugged with a swivel chair gas rod.

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