Office chair with chair back linkage function

Abstract

The utility model discloses an office chair with a chair back linkage function. The office chair comprises a frame, a cushion and a backrest, and the angle between the lower end of the backrest and the frame can be manually adjusted; the auxiliary structure comprises arc-shaped fixing blocks which are arranged below the frame and close to the two ends, arc-shaped through grooves are formed in the fixing blocks, pin shafts which can extend into the arc-shaped through grooves and are in sliding connection with the arc-shaped through grooves are arranged on the opposite side faces of the linkage frame, and limiting blocks are arranged at the opposite ends of the pin shafts. According to the utility model, the bottom plate for placing feet during rest and the extension plate capable of extending for a longer distance are arranged, so that the feet are lifted more comfortably when the backrest is put down for rest; and the structure is linked with the backrest and the linkage frame for the armrests, so that independent manual operation is not needed, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to office furniture technical field, specifically point to a kind of office chair with chair back linkage function. BACKGROUND

[0002] Office chair is the chair equipped for work convenience in daily work and social activities, is one of the indispensable furniture in modern office environment, not only is related to work efficiency, is closely related to user's health. Office chair usually adopts metal frame and high-density foam cushion, provides firm support and good comfort, the characteristics of office chair are simple and easy, convenient to use, material wear resistance etc., adapt to office environment.

[0003] In prior art, most office chairs can provide backrest adjustment function, can adopt knob adjustment, lever adjustment, pneumatic adjustment etc., can be conveniently adjusted to incline by user when resting, more comfortable. However, when the seat backrest is adjusted to incline, the vertical and falling legs will cause poor blood circulation and poor comfort after a long time. In order to improve this situation, the existing office chair has a pedal, which can be pulled out when resting, but it needs to be manually operated separately, which is inconvenient to use, and there is room for technical improvement. UTILITARY MODEL CONTENT

[0004] The utility model solves the above-mentioned problem of uncomfortable legs after backrest adjustment of office chair, and the technical problem that pedal needs to be manually pulled out, and provides an office chair with chair back linkage function.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows: an office chair with chair back linkage function, comprising a frame, a cushion and a backrest, the angle between the lower end of the backrest and the frame can be manually adjusted, further comprising:

[0006] A linkage frame is provided, and two linkage frames are provided, one end of the linkage frame is located on the two sides of the backrest and is rotatably connected with the backrest, and a round rod is connected between the lower ends of the linkage frames, and the round rod is lower than the cushion.

[0007] An extension pedal is provided, comprising a bottom plate, the bottom plate is fixedly connected with the outer side of the round rod, and an extension plate is slidably arranged on the bottom plate.

[0008] An auxiliary structure is provided, comprising arc-shaped fixing blocks arranged on the lower surface of the frame and close to the two ends, arc-shaped through grooves are arranged on the fixing blocks, the opposite sides of the linkage frames are provided with pin shafts which can extend into the arc-shaped through grooves and are slidably connected with the arc-shaped through grooves, and limit blocks are arranged on the opposite ends of the pin shafts.

[0009] Further, the backrest is composed of an outer frame and an inner lining, and the inner lining is an elastic mesh cloth.

[0010] Further, opposite sides of the end of the linkage frame are provided with support rods, which extend into the backrest and are provided with limiting rings.

[0011] Further, the right angles of the linkage frame are smoothly transitioned and wrapped with a sponge layer.

[0012] Further, the top view, bottom view and side view of the frame are U-shaped and integrally formed by composite steel.

[0013] Further, the bottom plate is provided with sliding grooves near both sides, and the extension plate is provided with a plurality of sliding blocks capable of slidingly connecting with the sliding grooves; the longitudinal section of the sliding block and the sliding groove is inverted T-shaped.

[0014] The utility model has the advantages compared with the prior art:

[0015] The bottom plate for placing feet during rest and the extension plate capable of extending for a longer distance are provided, so that when the backrest is placed for rest, the feet are lifted more comfortably.

[0016] The above structure is linked with the backrest and the linkage frame for the armrest, and manual operation is not needed, so that the use is convenient. DRAWINGS

[0017] Figure 1 is the structural schematic diagram of the utility model.

[0018] Figure 2 is the use state schematic diagram of the utility model.

[0019] Figure 3 is the frame structure schematic diagram of the utility model.

[0020] Figure 4 is the part structure schematic diagram of the utility model.

[0021] Figure 5 is the bottom plate and extension plate structure schematic diagram of the utility model.

[0022] As shown in the drawings: 1, frame, 2, cushion, 3, backrest, 4, linkage frame, 5, sponge layer, 6, round rod, 7, extension pedal, 8, bottom plate, 9, extension plate, 10, sliding groove, 11, sliding block, 12, fixed block, 13, arc-shaped through groove, 14, pin shaft, 15, limiting block. DETAILED DESCRIPTION

[0023] The utility model will be further described in detail in combination with the drawings.

[0024] Example one, in combination with the drawings Figure 1 , 2The utility model provides an office chair with chair back linkage function, including frame 1, cushion 2, back 3, the angle between the lower end of back 3 and frame 1 can be manually adjusted, back 3 is composed of outer frame and inner lining, and the inner lining is elastic mesh cloth, which improves the comfort of use,

[0025] The frame 1 is U-shaped in plan view, bottom view and side view, is integrally formed by composite steel, has simple structure and strong support, reduces mechanical connection points, and is not prone to failure,

[0026] Combined with the drawings Figure 1 、 2 The linkage frame 4 is provided with two ends, and the two ends are located on the two sides of the back 3 and are rotationally connected with the back 3, specifically, the opposite sides of the end of the linkage frame 4 are provided with supporting rods, the supporting rods extend into the back 3 and are rotationally provided with limiting rings, so that the two linkage frames 4 can rotate on the two sides of the back 3,

[0027] The lower ends of the linkage frames 4 are connected with a round rod 6, and the round rod 6 is lower than the cushion 2, the round rod 6 is used for connecting and stabilizing the two linkage frames 4, and provides a connection point for the bottom plate mentioned below,

[0028] The right angles of the linkage frames 4 are smoothly transitioned, and are wrapped with sponge layers 5, when the back 3 is located at the initial position, the linkage frames 4 are ninety degrees, and can be used as armrests, the sponge layers 5 make the touch soft and avoid bumping,

[0029] Combined with the drawings Figure 1 、 2 The utility model further comprises an extension pedal 7, a bottom plate 8, the bottom plate 8 is fixedly connected with the outer side of the round rod 6, so as to realize linkage with the linkage frames 4 and the back 3, the extension plate 9 is slidably arranged on the bottom plate 8, the slide grooves 10 are arranged on the bottom plate 8 and close to the two sides, the slide blocks 11 are arranged on the lower surface of the extension plate 9 and can be slidably connected with the slide grooves 10, the longitudinal section of the slide block 11 and the slide groove 10 is inverted T-shaped, in actual application, the outer side of the slide block 11 can be wrapped with a rubber layer, so that the slide block 11 and the slide groove 10 are in close sliding, the slide block 11 needs to be pushed away by the foot, the use of the complex limiting structure can be reduced, and the random sliding of the extension plate 9 can be avoided,

[0030] Based on the above structure, the utility model further comprises an auxiliary structure, the arc-shaped fixing blocks 12 are arranged on the lower surface of the frame 1 and close to the two ends, the arc-shaped through grooves 13 are arranged on the fixing blocks 12, the pin shafts 14 are arranged on the opposite sides of the linkage frames 4 and can extend into the arc-shaped through grooves 13 and be slidably connected with the arc-shaped through grooves 13, and the limiting blocks 15 are arranged on the opposite ends of the pin shafts 14,

[0031] In the above structure, when the reclining angle of the backrest 3 is adjusted by the knob or other adjusting structure, the backrest 3 will drive the linkage frame 4 to displace, the pin shaft 14 on the linkage frame 4 slides in the arc-shaped through slot 13 to realize cooperation, in this process, the cylinder 6 will drive the extension pedal 7 to extend outward to provide a footrest position for the user, and the user can use the foot to kick the extension plate 9 according to actual needs to extend the support length, and the use is flexible;

[0032] In addition, it is worth mentioning that in the initial state, the bottom plate 8 and the extension plate 9 away from the end of the cylinder 6 are inclined downward, so that when the backrest is adjusted, the bottom plate 8 and the extension plate 9 will gradually change the inclination angle until horizontal when following the cylinder 6 and the linkage frame 4 rotate.

[0033] The above describes the utility model and its implementation mode, which is not limited, and the drawings shown are only one of the embodiments of the utility model, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the creative purpose of the utility model, similar structural modes and embodiments are not creatively designed, which should belong to the protection scope of the utility model.

Claims

1. An office chair with a backrest linkage function, comprising a frame (1), a seat cushion (2), and a backrest (3), wherein the lower end of the backrest (3) and the frame (1) are manually adjustable in angle; characterized in that: Also includes: Linkage frame (4); There are two in total. One end of the linkage frame (4) is located on both sides of the backrest (3) and is rotatably connected to the backrest (3); A round rod (6) is connected between the lower ends of the linkage frame (4), and the round rod (6) is lower than the seat cushion (2); An extension pedal (7) includes a base plate (8), which is fixedly connected to the outer side of a round rod (6); an extension plate (9) is slidably provided on the base plate (8); Auxiliary structure: including arc-shaped fixing blocks (12) provided below the frame (1) and near both ends, each fixing block (12) is provided with an arc-shaped through groove (13), each side of the linkage frame (4) is provided with a pin (14) that can extend into the arc-shaped through groove (13) and slide with it, and each end of the pin (14) is provided with a limiting block (15).

2. An office chair with a backrest linkage function according to claim 1, characterized in that: The backrest (3) consists of an outer frame and an inner lining, the inner lining being an elastic mesh fabric.

3. An office chair with a backrest linkage function according to claim 1, characterized in that: The two sides of the linkage frame (4) are provided with support rods, and the support rods extend into the backrest (3) and are rotatably provided with limit rings.

4. An office chair with a backrest linkage function according to claim 3, characterized in that: The right angles of the linkage frame (4) are all smoothly transitioned and wrapped with a sponge layer (5).

5. An office chair with a backrest linkage function according to claim 1, characterized in that: The frame (1) is U-shaped in top, bottom and side views and is integrally formed from composite steel.

6. An office chair with a backrest linkage function according to claim 1, characterized in that: The base plate (8) is provided with sliding grooves (10) on both sides, and the extension plate (9) is provided with several sliders (11) that can slide and connect with the sliding grooves (10); the longitudinal section of the sliders (11) and the sliding grooves (10) are both inverted T-shaped.

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