Chair seat with elastic buffering function and office chair comprising chair seat

Abstract

The utility model discloses a chair seat with an elastic buffering function, which comprises a base, and a left rotating bracket and a right rotating bracket are arranged on the left side and the right side of the rear end part of the base; the seat shell is located above the base, and the left rear side portion and the right rear side portion of the seat shell are installed on a left rotating support and a right rotating support of the base through a left seat shell rotating shaft and a right seat shell rotating shaft, so that the seat shell rotates relative to the base along the left seat shell rotating shaft and the right seat shell rotating shaft; the elastic buffering assembly is arranged between the base and the base shell and used for providing elastic buffering counter-acting force for the base shell. According to the utility model, the elastic buffer component is arranged between the base and the seat shell, when a user sits on the chair seat, the seat shell is subjected to downward impact force to form downward displacement, and at the moment, the elastic buffer component forms upward counter-acting force, so that the effects of acting force and counter-acting force are formed, and a good buffer effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to a chair seat with an elastic buffering function and an office chair including the chair seat. Background Art

[0002] An office chair is a chair designed for office workers, aiming to provide a comfortable sitting posture and support to reduce physical fatigue and health problems caused by long-term work.

[0003] The seat of the existing office chair usually adopts the following several structures for buffering:

[0004] 1. The surface layer of the chair seat is buffered by a combination of sponge and multiple springs, which can provide sufficient support and comfort, effectively absorb the impact force when sitting down, and maintain good resilience at the same time. However, the preparation cost of this structure is relatively high, and the applicable range is small. Generally, it is only applicable to boss chairs, etc.;

[0005] 2. The chair seat uses a highly elastic material as the seat filling. These materials can provide good support and comfort, and can also ensure the comfort and durability of long-term use, but the buffering effect and resilience are not ideal;

[0006] 3. The seat surface of the chair seat is made of mesh material, which has good air permeability and elasticity, helps to provide additional buffering effect, and reduces the accumulation of heat and moisture when sitting for a long time. However, the buffering effect and resilience are not ideal.

[0007] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is generated under this background. Content of the Utility Model

[0008] One of the technical problems to be solved by the utility model is: to provide a chair seat with an elastic buffering function that improves the buffering effect and resilience performance and has a low manufacturing cost in view of the deficiencies of the prior art.

[0009] Another technical problem to be solved by the utility model is: to provide an office chair including the above chair seat.

[0010] As a chair seat with an elastic buffering function according to the first aspect of the utility model, it includes:

[0011] A base, and left and right rotating brackets are arranged on the left and right sides of the rear end of the base;

[0012] A seat shell located above the base, and the left and right rear sides of the seat shell are installed on the left and right rotating brackets of the base through left and right seat shell rotating shafts, so that the seat shell rotates relative to the base along the left and right seat shell rotating shafts; and

[0013] An elastic buffer assembly disposed between the base and the seat shell for providing an elastic buffer reaction force to the seat shell.

[0014] In a preferred embodiment of the present utility model, the elastic buffer assembly includes:

[0015] An intermediate seat bracket mounted on the base and located between the base and the seat shell;

[0016] A torsion spring shaft disposed on the intermediate seat bracket; and

[0017] At least one torsion spring, the spring wire body of each torsion spring is sleeved on the torsion spring shaft, its fixed end is clamped on the base, and its free end is clamped on the seat shell.

[0018] In a preferred embodiment of the present utility model, torsion spring clamping seats are provided on the bottom surface of the seat shell at positions corresponding to each torsion spring, and clamping grooves are formed on the torsion spring clamping seats, and the free end of each torsion spring is clamped in the clamping groove of the corresponding torsion spring clamping seat.

[0019] In a preferred embodiment of the present utility model, a seat cushion is provided on the upper surface of the seat shell.

[0020] An office chair as the second aspect of the present utility model includes a seat, a chair backrest disposed on the rear side of the seat, left and right armrests disposed on the left and right sides of the seat, and a mobile support mechanism disposed under the seat for supporting the seat; characterized in that the seat is the seat with an elastic buffer function as described above.

[0021] Due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows: By providing an elastic buffer assembly between the base and the seat shell, when a user sits on the seat, the seat shell is subjected to a downward impact force to form a downward displacement. At this time, the elastic buffer assembly forms an upward reaction force, thus forming the effect of action and reaction forces and playing a good buffering role. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic structural diagram of the office chair of the present utility model.

[0024] Figure 2 It is a schematic structural view of one perspective of the seat of the present utility model.

[0025] Figure 3 It is a schematic structural view of another perspective of the seat of the present utility model.

[0026] Figure 4 It is a schematic structural view of the seat of the present utility model in the starting state.

[0027] Figure 5 It is a schematic structural view of the seat of the present utility model in the depressed state.

[0028] Figures 6 to 8 It is a partial schematic view of the torsion spring installation of the seat of the present utility model. Detailed implementation manner

[0029] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below with reference to specific illustrations.

[0030] Refer to Figure 1 , what is shown in the figure is an office chair, including a seat 100, a backrest 200, left and right armrests 300a, 300b, and a mobile support mechanism 400.

[0031] The backrest 200 is arranged on the rear side of the seat 100, the left and right armrests 300a, 300b are arranged on the left and right sides of the seat 100, and the mobile support mechanism 400 is arranged below the seat 100, which is used to support the seat 100 and adjust the height of the seat 100. The mobile support mechanism 400 generally consists of a rod-type cylinder 410, a five-star foot bracket 420, and several casters 430.

[0032] Refer to Figure 2 and Figure 3 and in combination with Figure 4 and Figure 5 , the seat 100 of the present utility model is a seat with an elastic buffer function, including a base 110, a seat shell 120, and an elastic buffer assembly 130.

[0033] The base 110 is located at the bottom of the seat 100, and is connected to the top of the mobile support mechanism 400. Left and right rotating brackets 111a, 111b are arranged on the left and right sides of the rear end of the base 110. A seat cushion (not shown in the figure) is arranged on the upper surface of the base 110, and the seat cushion can be made of a mesh material or a highly elastic material, so as to improve the buffer effect and comfort of the seat 100.

[0034] The seat shell 120 is located above the base 110. The left, right, rear sides of the seat shell 120 are mounted on the left and right rotating brackets 111a, 111b of the base 110 through the left and right seat shell rotating shafts 121a, 121b, enabling the seat shell 120 to rotate relative to the base 110 along the left and right rotating brackets 111a, 111b.

[0035] The elastic buffer assembly 130 is disposed between the base 110 and the seat shell 120, and is used to provide an elastic buffer reaction force to the seat shell 120. Specifically, referring to Figures 6 to 7 and combining with Figures 2 to 5 , the elastic buffer assembly 130 includes an intermediate seat bracket 131, a torsion spring rotating shaft 132, and two torsion springs 133.

[0036] The intermediate seat bracket 131 is mounted on the base 110 and is located between the base 110 and the seat shell 120. The intermediate seat bracket 131 can be directly disposed on the base 110 by fixing means such as screws and snap connections, or can be mounted on the base 110 in a linkage manner, that is, the left, right, rear sides of the intermediate seat bracket 131 are connected to the left and right seat shell rotating shafts 121a, 121b, enabling the intermediate seat bracket 131 to rotate following the seat shell 120, and its front side is snap-connected to the base 110 through a limiting structure. The torsion spring rotating shaft 132 is fixedly disposed on the intermediate seat bracket 131. The two torsion springs 133 are arranged at intervals along the axial direction of the torsion spring rotating shaft 132. The spring wire body of each torsion spring 133 is sleeved on the torsion spring rotating shaft 132, its fixed end is snap-connected to the base 110, and its free end is snap-connected to the seat shell 120.

[0037] In order to facilitate the fixation of the free end of the torsion spring 133, a torsion spring snap seat 122 is provided on the bottom surface of the seat shell 120 at a position corresponding to each torsion spring 133. A snap groove 122a is formed on the torsion spring snap seat 122, and the free end of the torsion spring 133 is snap-connected into the corresponding snap groove 122a of the torsion spring snap seat 122.

[0038] The working principle of the seat 100 of the present utility model is as follows:

[0039] In the initial state, that is, when the user is not sitting on the seat, the torsion spring 133 of the elastic buffer assembly 130 elastically supports the seat shell 120, as shown in Figure 4 . When the user sits on the seat, the seat shell 120 receives a downward impact force to form a downward displacement. At this time, the torsion spring 133 of the elastic buffer assembly 130 forms an upward reaction force and acts on the seat shell 120, thus forming the effect of action and reaction forces and playing a good buffering role, as shown in Figure 5 .

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A chair seat with elastic buffering function, characterized in that: include: A base, wherein left and right rotating brackets are arranged on the left and right sides of the rear end of the base; A seat shell located above the base, wherein the left and right rear sides of the seat shell are mounted on the left and right rotating brackets of the base through left and right seat shell rotating shafts, so that the seat shell rotates relative to the base along the left and right seat shell rotating shafts; and An elastic buffer component is arranged between the base and the seat shell and is used to provide an elastic buffer reaction force to the seat shell.

2. The chair seat with elastic buffering function as claimed in claim 1, characterized in that: The elastic buffer component comprises: An intermediate seat bracket mounted on the base and located between the base and the seat shell; A torsion spring shaft disposed on the intermediate seat bracket; and At least one torsion spring, the spring wire body of each torsion spring is sleeved on the torsion spring rotating shaft, the fixed end of the spring wire is clamped on the base, and the free end of the spring wire is clamped on the seat shell.

3. The chair seat with elastic buffering function as claimed in claim 1, characterized in that: A torsion spring clamping seat is arranged on the bottom surface of the seat shell at a position corresponding to each torsion spring, and a clamping groove is provided on the torsion spring clamping seat, and the free end of each torsion spring is clamped in the clamping groove of the corresponding torsion spring clamping seat.

4. The chair seat with elastic buffering function according to any one of claims 1 to 3, characterized in that: A seat cushion is arranged on the upper surface of the seat shell.

5. An office chair, comprising a seat, a chair back arranged on the rear side of the seat, left and right armrests arranged on the left and right sides of the seat, and a movable support mechanism arranged under the seat for supporting the seat; characterized in that: The seat is a seat with elastic buffering function as claimed in any one of claims 1 to 4.

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