TWM522648U - Improved office chair base structure - Google Patents

Description

Office chair base structure improvement

This creation is about the improvement of the structure of the base of the office chair, which is to provide a more stable and stable office chair and increase the life of the pulley.

According to the office chair, the office chair plays a very important role in the office supplies. However, the base 10 of the office chair or computer chair sold in the market is generally designed in the fifth and sixth figures: the base 10 has a central hole. 11 is combined with the hydraulic lever of the height adjustment of the office chair, and five support legs 12 are annularly arranged outward from the central hole 11. The support leg 12 is provided with an assembly hole on the side away from the central hole 11 to provide a pulley assembly, wherein the support leg The cross section of the 12 is shown in the sixth figure, and the bottom end of the support leg 12 is gradually lowered from the center hole 11 to the end of the support leg 12, and the bottom end of the support leg 12 is in a flat shape.

However, the above structure actually has the following disadvantages:

First, the bottom of the conventional structural support foot 12 is a flat surface. When cleaning the office, the office chair must be moved to clean it. Furthermore, paper scraps and the like are easily caught between the base 10 and the floor, which increases the difficulty of cleaning.

Second, the conventional structure mostly consists of five sets of support legs 12 and assembles the pulley. The human body rides on the office chair, and its weight produces a force to force downward, because the five support feet 12 are not arranged in a symmetrical manner, so that the stress cannot be Effectively Dispersion, it is bound to cause the problem that some of the supporting feet 12 are subjected to a large force causing damage to the pulley on the supporting foot 12.

3. As mentioned above, since the support legs 11 of the base 10 are not symmetrical, the sliding displacement may cause the office chair to fall over due to uneven ground (such as gaps between the tiles and wires).

Fourth, since the support leg 11 of the base 10 is not symmetrical, the center of gravity does not fall on the position of the center hole 11, so if the user leans back on the back of the chair, or the child climbs into the office chair, Since the center of gravity is not in the position of the center hole 11, the office chair is overturned.

5. According to statics, the conventional structure presents a structure of a simply supported beam which produces an upward shearing force at the end of the support leg 12, and the engagement of the central bore 11 with the support foot 12 is already understood. There will be breakage at the site, causing users to have dangerous concerns.

The main purpose of this creation is to improve the above-mentioned shortcomings. The main technique is that the base of the office chair is provided with six mutually symmetrical support legs, and each support leg is designed to gradually descend from the center outward, and the weight is generated downward. The force is effectively dispersed on each support foot to provide a better stability of the office chair and increase the life of the pulley.

The structure that can achieve the above object mainly includes: a base body having a mounting hole for assembling the oil pressure bar in the center; and six supporting legs disposed on the base body, and each of the supporting legs is provided at the end slip The wheel set is equipped with a coupling hole; the present invention is characterized in that: the six support legs are radially disposed on the base body, and the six support legs are symmetrically arranged with each other, and further, the top edge and the bottom edge of each support foot are set by the base The body is inclined downward, and accordingly, the downward stress generated by the office chair is evenly distributed to the six supporting legs, thereby providing an office chair with better stability and increasing the life of the pulley.

Therefore, with the technical means of this creation, a brief description of the efficacy of this creation can be found as follows:

1. The creation has six support legs symmetrically arranged, and the downward stress is effectively dispersed on each support leg to provide better stability of the office chair.

2. As described above, since the downward stress is evenly distributed on the respective support legs, the load stress on the pulley can be reduced, and the life of the pulley can be increased.

3. The support legs of the present creation are arranged to be inclined downwards. Therefore, the base body and the support legs form a sloped surface. Therefore, the downward stress gradually increases from the center outward to the support legs, and thus the generated shear force is generated. The conventional structure is concentrated on the joint of the base body and the support leg to avoid the problem of breakage.

4. The utility model has six support legs which are symmetrically arranged. If the center of gravity of the office chair can fall in the central assembly hole, the office chair can be stably slid on the ground without the problem of overturning due to uneven ground.

"practice"

10‧‧‧Base

11‧‧‧ center hole

12‧‧‧Support feet

"This creation"

20‧‧‧Base body

21‧‧‧Assembly holes

22‧‧‧ reinforcing ribs

30‧‧‧Support feet

31‧‧‧Top edge

32‧‧‧ bottom edge

33‧‧‧End

34‧‧‧Contact hole

35‧‧‧ reinforcing ribs

The first picture is the three-dimensional structure of the creation.

The second picture is a sectional view of the creative support foot

The third picture is the shearing force of the creative support foot.

The fourth picture is the bottom view of the creation

The fifth picture is a perspective view of the conventional structure.

The sixth picture is a sectional view of the conventional structure

In order to enable your review board to have a better understanding and recognition of the features and characteristics of this creation, the following preferred examples are listed below with the following description:

Please refer to the first to fourth figures. The present invention mainly comprises a base body 20 and six supporting legs 30. The base body 20 has a mounting hole 21 for assembling the oil pressure bar at the center thereof, and the six supporting legs 30. The support body 30 is disposed on the base body 20, and each of the support legs 30 is provided with a coupling hole 34 for the pulley assembly. The present invention is characterized in that the six support legs 30 are radially disposed on the base body 20, and the six supports The feet 30 are symmetrically arranged with each other. Further, the top edge 31 and the bottom edge 32 of each of the support legs 30 are disposed to be inclined downward from the base body 20, whereby the downward stress generated by the office chair is evenly distributed to the six supports. The foot 30 provides a more stable office chair and increases the life of the pulley.

Through the above structure, the use of this creation and the available effects A brief description is as follows:

Referring to the first to second figures, the user assembles the hydraulic rod to the assembly hole 21 of the base body 20, and combines the pulley into the coupling hole 34 of the support leg 30, so that the creation can be used, and thus the installation effect is simple. And the creation has six supporting legs 30 symmetrically arranged, and the downward stress is effectively dispersed on each supporting leg 30 to provide better stability of the office chair.

Referring to the third figure, the support legs 30 of the present invention are arranged to be inclined downward. Therefore, the base body 20 and the support leg 30 form a slope, and therefore, the downward stress gradually increases from the center outward to the support legs 30. Therefore, the resulting shear force does not resemble the conventional structure concentrated on the joint of the base body 20 and the support leg 30, and the problem of breakage can be avoided.

According to the above concept, the present invention can also be implemented in the following manner. Referring to the fourth figure, the base body 20 and the supporting leg 30 are integrally formed by plastic, and the base body 20 and the supporting leg 30 are a thin shell member. A plurality of reinforcing ribs 22, 35 are disposed in the thin shell member. Accordingly, the present embodiment is advantageous in terms of light weight and high strength. Therefore, the above embodiments are within the creative scope of the present invention.

In summary, the six supporting legs 30 are radially disposed on the base body 20, and the supporting legs 30 are symmetrically arranged with each other. Further, the top edge 31 and the bottom edge 32 of each supporting leg 30 are disposed by the base body. The 20 is inclined downward, whereby the downward stress generated by the office chair is evenly distributed to the six support legs 30 to increase the stability of the office chair. And its structure has not been seen in the publications or public use, in line with the requirements of the invention patent application, please ask the Bureau of the Mingjian, as soon as possible to grant patents, to pray.

The above description is only for the preferred embodiment provided by the present invention, and is not intended to limit the scope of implementation of the present invention. All of the relevant artisans in the art are equally varied according to the present creation, and should belong to the present invention. The scope of coverage.

20‧‧‧Base body

21‧‧‧Assembly holes

30‧‧‧Support feet

31‧‧‧Top edge

32‧‧‧ bottom edge

33‧‧‧End

34‧‧‧Contact hole

35‧‧‧ reinforcing ribs

Claims (2)

The utility model relates to an improved structure of an office chair base, which mainly comprises: a base body having a mounting hole for assembling the oil pressure bar in the center; and six supporting legs disposed on the base body, and each of the supporting legs is provided at the end The pulley block is provided with a coupling hole; the six support legs are radially disposed on the base body, and the six support legs are symmetrically arranged with each other, and further, the top edge and the bottom edge of each support leg are arranged downward from the base body The slanting shape, according to which, the downward stress generated by the office chair is evenly distributed to the six supporting legs, thereby providing an office chair with better stability and increasing the life of the pulley. According to the improvement of the base structure of the office chair according to the first aspect of the patent application, the base body and the supporting leg are a thin shell member, and a plurality of reinforcing ribs are arranged in the thin shell member.