Air pressure bar adjusting mechanism for office chair

Abstract

The utility model relates to the technical field of office chairs, in particular to an office chair air pressure bar adjusting mechanism which comprises a base installation frame, a middle installation groove is formed in the inner side of the base installation frame, inner sliding grooves are formed in the two sides of the middle installation groove, internal thread sliding blocks are arranged in the inner sliding grooves in a sliding mode, and air rod installation bases are fixedly arranged at the lower ends of the internal thread sliding blocks. When the backrest needs to be put down for rest, the motor is started to drive the lead screw to rotate, the lead screw drives the worm in the driving sleeve to rotate, the worm drives the turbine to rotate, and the turbine drives the arc-shaped sliding sleeve to rotate on the inner side of the driving sleeve through the rotating shaft, so that the backrest mounting plate rotates, and the backrest is put down; meanwhile, an air rod mounting seat is driven to slide in an inner sliding groove through the air rod mounting seat so as to adjust the supporting position of the air rod, so that the office chair adapts to center transformation after people lie down, and the office chair is prevented from toppling over.

Description

Technical Field

[0001] This utility model relates to the field of office chair technology, specifically to an office chair gas spring adjustment mechanism. Background Technology

[0002] In modern office environments, the comfort and functionality of office chairs are crucial for improving work efficiency and protecting user health. Traditional office chairs are typically equipped with gas springs for adjusting seat height and backrest angle. However, existing office chairs have some design flaws, particularly regarding the adjustment of the gas spring support position, which limits their comfort and safety when reclining.

[0003] The support position is fixed:

[0004] Traditional office chair gas springs typically have fixed support positions and cannot be adjusted according to the user's weight or reclining angle. This means that when the user lies down, the gas spring cannot provide sufficient support, which can easily cause the office chair to tilt or even tip over, posing a safety hazard.

[0005] Therefore, an office chair gas spring adjustment mechanism is needed to improve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a gas spring adjustment mechanism for office chairs to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An office chair gas spring adjustment mechanism includes a base mounting bracket. The base mounting bracket has a central mounting groove on its inner side and inner sliding grooves on both sides of the central mounting groove. An internally threaded slider is slidably mounted inside the inner sliding groove. A gas spring mounting seat is fixedly mounted at the lower end of the internally threaded slider, and a gas spring is inserted into the gas spring mounting seat.

[0009] As a preferred embodiment of this utility model, a motor is fixedly mounted on one side surface of the middle mounting groove inside the base mounting bracket, and a lead screw is provided at the output end of the motor.

[0010] In a preferred embodiment of this utility model, the lead screw is threadedly connected to the internal thread slider.

[0011] As a preferred embodiment of this utility model, a drive sleeve is provided on one side of the base mounting bracket, and a worm gear is provided inside the drive sleeve via a rotating shaft.

[0012] As a preferred embodiment of this utility model, a worm gear is rotatably provided inside the drive sleeve, and a worm wheel is meshed with the worm gear.

[0013] In a preferred embodiment of this invention, the worm gear and the lead screw are fixedly connected.

[0014] As a preferred embodiment of this utility model, an arc-shaped sliding sleeve is fixedly provided on the surface of the rotating shaft, and a backrest mounting plate is fixedly provided on the surface of the arc-shaped sliding sleeve.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the drive sleeve is fixed to the side of the seat plate, the base mounting bracket is fixed to the lower end of the seat plate, and the backrest is installed on the surface of the backrest mounting plate. When it is necessary to recline the backrest for rest, the motor is started to drive the lead screw to rotate. The lead screw drives the worm gear inside the drive sleeve to rotate. The worm gear drives the worm wheel to rotate. The worm wheel drives the arc-shaped sliding sleeve to rotate inside the drive sleeve through the rotating shaft, thereby rotating the backrest mounting plate and reclining the backrest. At the same time, the gas spring mounting seat slides inside the inner sliding groove through the gas spring mounting seat to adjust the support position of the gas spring, thereby adapting to the center change after the person lies down and preventing the office chair from tipping over. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional top view of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall three-dimensional bottom view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal side view of the drive sleeve of this utility model;

[0020] Figure 4 This is a top view of the internal structure of the drive sleeve of this utility model;

[0021] Figure 5 This is a top view of the overall structure of this utility model after installation;

[0022] Figure 6 This is a top view of the overall structure of this utility model;

[0023] Figure 7 This is a side view of the overall installed structure of this utility model;

[0024] Figure 8 This is a schematic diagram of the overall structure of this utility model after installation, viewed from below.

[0025] In the diagram: 1. Backrest mounting plate; 2. Arc-shaped sliding sleeve; 3. Drive sleeve; 4. Internal threaded slider; 5. Internal sliding groove; 6. Lead screw; 7. Motor; 8. Base mounting bracket; 9. Gas rod mounting seat; 10. Gas rod; 11. Worm gear; 12. Worm; 13. Rotating shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0028] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0029] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0031] Please see Figure 1-8 This utility model provides a technical solution:

[0032] A gas spring adjustment mechanism for an office chair includes a base mounting bracket 8. The base mounting bracket 8 has a central mounting groove on its inner side, and inner sliding grooves 5 on both sides of the central mounting groove. An internally threaded slider 4 slides within the inner sliding grooves 5. A gas spring mounting seat 9 is fixed to the lower end of the internally threaded slider 4. A gas spring 10 is inserted into the gas spring mounting seat 9. A drive sleeve 3 is fixed to the side of the seat plate. The base mounting bracket 8 fixes the lower end of the seat plate. A backrest is mounted on the surface of a backrest mounting plate 1. When the backrest needs to be reclined for rest, a motor 7 is started, driving a lead screw 6 to rotate. The lead screw 6 drives a worm gear 12 within the drive sleeve 3 to rotate. The worm gear 12 drives a worm wheel 11 to rotate. The worm wheel 11, through a rotating shaft 13, drives an arc-shaped sliding sleeve 2 to rotate within the drive sleeve 3, thereby rotating the backrest mounting plate 1 and reclining the backrest. Simultaneously, the gas spring mounting seat 9 slides within the inner sliding grooves 5, adjusting the support position of the gas spring 10 to accommodate the shift in center of gravity when the person lies down, preventing the office chair from tipping over.

[0033] As an example of this utility model, a motor 7 is fixedly provided on one side surface of the middle mounting groove inside the base mounting bracket 8, and a lead screw 6 is provided at the output end of the motor 7.

[0034] As an example of this utility model, the lead screw 6 is threadedly connected to the internal thread slider 4.

[0035] As an example of this utility model, a drive sleeve 3 is provided on one side of the base mounting bracket 8, and a worm gear 11 is provided inside the drive sleeve 3 via a rotating shaft 13.

[0036] As an example of this utility model, the drive sleeve 3 is provided with a worm gear 12 for rotation, and the worm wheel 11 is meshed with the worm gear 12.

[0037] As an example of this utility model, the worm gear 12 is fixedly connected to the lead screw 6.

[0038] As an example of this utility model, an arc-shaped sliding sleeve 2 is fixedly provided on the surface of the rotating shaft 13, and a backrest mounting plate 1 is fixedly provided on the surface of the arc-shaped sliding sleeve 2.

[0039] Working principle: In use, the drive sleeve 3 is fixed to the side of the seat, the base mounting bracket 8 is fixed to the lower end of the seat, and the backrest is installed on the surface of the backrest mounting plate 1. When it is necessary to recline the backrest for rest, the motor 7 is started to drive the lead screw 6 to rotate. The lead screw 6 drives the worm gear 12 inside the drive sleeve 3 to rotate. The worm gear 12 drives the worm wheel 11 to rotate. The worm wheel 11 drives the arc-shaped sliding sleeve 2 to rotate inside the drive sleeve 3 through the rotating shaft 13, thereby rotating the backrest mounting plate 1 and reclining the backrest. At the same time, the gas spring mounting seat 9 slides inside the inner sliding groove 5 to adjust the support position of the gas spring 10, thereby adapting to the center shift after the person lies down and preventing the office chair from tipping over.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas spring adjustment mechanism for an office chair, comprising a base mounting bracket (8), characterized in that: The base mounting bracket (8) has a middle mounting groove on its inner side, and inner sliding grooves (5) are provided on both sides of the middle mounting groove. An internal threaded slider (4) is slidably provided inside the inner sliding groove (5). A gas rod mounting seat (9) is fixedly provided at the lower end of the internal threaded slider (4). A gas rod (10) is inserted into the gas rod mounting seat (9).

2. The gas spring adjustment mechanism for an office chair according to claim 1, characterized in that: A motor (7) is fixedly installed on one side surface of the middle mounting groove inside the base mounting bracket (8), and a lead screw (6) is provided at the output end of the motor (7).

3. The gas spring adjustment mechanism for an office chair according to claim 2, characterized in that: The lead screw (6) is threadedly connected to the internal thread slider (4).

4. The gas spring adjustment mechanism for an office chair according to claim 3, characterized in that: The base mounting bracket (8) has a drive sleeve (3) on one side, and a worm gear (11) is provided inside the drive sleeve (3) via a rotating shaft (13).

5. The gas spring adjustment mechanism for an office chair according to claim 4, characterized in that: The drive sleeve (3) is equipped with a worm gear (12) that rotates inside, and the worm wheel (11) is meshed with the worm gear (12).

6. The gas spring adjustment mechanism for an office chair according to claim 5, characterized in that: The worm (12) is fixedly connected to the lead screw (6).

7. The gas spring adjustment mechanism for an office chair according to claim 6, characterized in that: The rotating shaft (13) is fixedly provided with an arc-shaped sliding sleeve (2), and the arc-shaped sliding sleeve (2) is fixedly provided with a backrest mounting plate (1).

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