Backrest support adjustable office chair convenient to lean against neck

Abstract

The utility model discloses a backrest support adjustable convenient neck leaning type office chair, which comprises a chair seat, a backrest and supporting legs, the two sides of the chair seat are connected with armrests, the back side is connected with the backrest, the bottom is connected with the supporting legs, and an arc-shaped bent position which conforms to the bending degree of the neck of a human body is arranged at the upper end of the backrest. The backrest support is arranged on the back side of the backrest, the backrest support slides up and down in the backrest through the adjustable sliding mechanism on the inner side, on one hand, the back is powerfully supported, and on the other hand, the backrest support can slide up and down in the backrest through the adjustable sliding mechanism on the inner side; on the other hand, people with different body weights and body types manually adjust the backrest support on the inner side so as to adjust the curvature of the backrest, and a state conforming to the curvature of the spine or the waist of the people is adjusted by the people; the side supporting frames and the middle supporting frame in the supporting framework of the office chair form a supporting position capable of supporting the left side and the right side of the waist.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to a backrest support adjustable and convenient neck-rest office chair. Background Art

[0002] Office chairs belong to the furniture for long-term sitting in the office. If any link such as seat cushion support, backrest support, lumbar support and neck support is not well done, it may lead to discomfort during long-term sitting. Among the existing such office chairs, most of them only have a support sleeve as the backrest support. For people with a larger body weight, on the one hand, it cannot provide good support for their spinal parts, and on the other hand, when leaning back forcefully, it is easy to directly lean on the backbone of the back, increasing discomfort. Moreover, when there is a lack of backrest support, the curvature of the backrest is also difficult to fit the curvature of the human back, and it is even more impossible for the user to adjust the curvature they want. In addition, most of the current office chairs will provide a headrest, which can provide leaning support for the head and back in the normal sitting position, and solve the neck leaning problem through the adjustable angle of the headrest during the lunch break. Although this solution can solve the problems of headrest and neck support, for some people who do not need a headrest, the headrest has become a burden. Therefore, how to provide neck support without installing a headrest has become a problem to be solved. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a backrest support adjustable and convenient neck-rest office chair to solve the technical problems mentioned in the background art.

[0004] To solve the technical problems, the utility model is realized by adopting the following technical solutions:

[0005] A backrest support adjustable and convenient neck-rest office chair, including a seat, a backrest and support feet. Armrests are connected to both sides of the seat, the backrest is connected to the back side, and the support feet are connected to the bottom. The backrest includes an integrally formed backrest end and a neck-rest end. The neck-rest end is located above the backrest end and has an arc-shaped bending position that conforms to the curvature of the human neck. A backrest support is installed inside the backrest, and the output end of the backrest support abuts against the backrest end. The backrest support slides up and down inside the backrest through an adjustable sliding mechanism.

[0006] Specifically, the adjustable sliding mechanism includes a sliding seat, a slider and an elastic positioning member. The backrest support includes a cushion and a support rod. The sliding seat has a mutually communicating chute and a sliding hole, where the chute is located inside the sliding hole. A slider that can slide up and down inside the chute is provided inside the chute. The cushion is fixedly connected to the slider through the support rod. An elastic positioning member is installed on one side of the slider. A number of positioning grooves are arranged in an array along the height direction inside the chute, and the output end of the elastic positioning member can abut against the positioning grooves.

[0007] Specifically, the slider includes a sliding portion and a connecting portion. The sliding portion slides up and down inside the sliding groove, and the connecting portion extends out of the sliding hole and is fixedly connected to the support rod of the backrest support. The support rod has a bifurcated structure, and the ends of the bifurcated structure are fixedly connected to the cushion.

[0008] Specifically, an elastic channel is provided inside the slider, and the elastic positioning member is embedded in the elastic channel. The elastic positioning member includes a spring and a positioning block. One side of the positioning block is fixedly connected to the output end of the spring, and the other side can abut against the positioning groove to complete the elastic positioning when the slider slides up and down.

[0009] Specifically, the cushion has a support arc surface corresponding to the bending radian of the human back, and a support position for supporting the entire human back is formed between multiple cushions.

[0010] Specifically, the backrest includes a support skeleton and a support sleeve sleeved on the support skeleton. The backrest end and the neck support end are both located on the support sleeve. The support skeleton includes a bottom support frame, a middle support frame, a side support frame, and a top support frame that are integrally formed. The sliding seat is located inside the middle support frame. The side support frame is used to provide support for the waist of the body. The top support frame has an arc-shaped bending portion that bends backward. After the arc-shaped bending portion sleeves the support sleeve, an arc-shaped bending position for the neck support is formed. A first reaching position is formed between the side support frame and the middle support frame, and a second reaching position is formed between the middle support frame and the top support frame. Both the first reaching position and the second reaching position are used for manually controlling the up and down sliding of the backrest support.

[0011] Specifically, the support foot includes a lifting mechanism and a universal wheel. One end of the lifting mechanism is installed at the lower end of the seat, and the other end is fixedly connected to the upper end of the foot claw frame and its lifting is controlled by a control switch located on one side of the seat. Universal wheels are installed on the outside of the foot claw frame.

[0012] Specifically, a cylinder component is provided at the bottom of the seat, and a hinge mechanism is provided between one side of the backrest and the armrest. The bottom of the backrest is connected to the cylinder component through a link mechanism.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the office chair of the present utility model, by providing an arc-shaped bend at the upper end of the backrest that conforms to the curvature of the human neck, it can meet the support for the neck during normal naps or lunch breaks without a headrest. A backrest support is provided on the back side of the backrest. The backrest support slides up and down within the backrest through an adjustable sliding mechanism on the inner side. On the one hand, it provides strong support for the back, and on the other hand, it allows people of different body weights and sizes to manually adjust the inner backrest support to adjust the curvature of the backrest, and adjust to a state that conforms to their own spinal or lumbar curvature. The side support frame and the middle support frame in the support skeleton of this office chair together form a support position that can support the left and right sides of the waist. The overall structure conforms to the ergonomic design and can provide users with a high level of comfort experience. Description of the Drawings

[0015] Figure 1 : One of the overall structure assembly drawings of the office chair of the present utility model;

[0016] Figure 2 : Another overall structure assembly drawing of the office chair of the present utility model;

[0017] Figure 3 : For Figure 1 The radial sectional view along the central axis in

[0018] Figure 4 : One of the exploded views of the overall structure of the backrest;

[0019] Figure 5 : Another exploded view of the overall structure of the backrest;

[0020] Figure 6 : The exploded view of the backrest, the backrest support and the adjustable sliding mechanism;

[0021] Figure 7 : The exploded view of the adjustable sliding mechanism;

[0022] Figure 8 : The schematic diagram of the back structure of the support skeleton in the backrest;

[0023] Figure 9 : The exploded view of the slider and the elastic positioning member;

[0024] Figure 10 : The exploded view of the backrest support;

[0025] In the figure: seat 1, backrest 2, support feet 3, armrests 4, backrest end 71, neck support end 72, arc-shaped bend 721, backrest support 8, adjustable sliding mechanism 5, sliding seat 51, slider 52, elastic positioning member 53, cushion 81, support rod 82, chute 511, sliding hole 512, positioning groove 513, sliding portion 521, connecting portion 522, bifurcated structure 821, elastic channel 523, spring 531, positioning block 532, supporting arc surface 811, support frame 6, support sleeve 7, bottom support frame 61, middle support frame 62, side support frame 63, top support frame 64, arc-shaped bending portion 641, first reach position 601, second reach position 602, lifting mechanism 31, universal wheel 32, claw support 33, cylinder component 101, hinge mechanism 102, link mechanism 103. Detailed implementation

[0026] Next, in combination with the accompanying drawings and the specific implementation, the present utility model will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0027] Refer to Figures 1 to 10 :

[0028] The present utility model discloses an office chair with an adjustable backrest support 8 for neck support, including a seat 1, a backrest 2 and support feet 3. The seat 1 serves as the main body of the entire office chair, and a seat cushion is installed at its upper end. Here, for the convenience of ventilation, preferably, both the seat cushion and the support sleeve 7 of the backrest 2 are made of cloth covers. The two sides of the seat 1 are connected with armrests 4, the back side is connected with the backrest 2, and the bottom is connected with the support feet 3. Preferably, an elastic connection form is adopted between the backrest 2 and the seat 1. Specifically, an elastic C-shaped steel plate can be used as an intermediate connecting member. One end of the steel plate is fixedly connected to the seat 1, and the other end is fixedly connected to the backrest 2. The backrest 2 includes an integrally formed backrest end 71 and a neck support end 72. The backrest end 71 corresponds to the back position of the human body when sitting or lying down, and has a bending trend that conforms to the S-shaped curve of the human back. The neck support end 72 is located at the upper end of the backrest end 71, and the neck support end 72 has an arc-shaped bend 721 that conforms to the curvature of the human neck. A backrest support 8 is installed inside the backrest 2, and the output end of the backrest support 8 abuts against the backrest end 71. The backrest support 8 slides up and down inside the backrest through an adjustable sliding mechanism 5.

[0029] Specifically, the adjustable sliding mechanism 5 includes a sliding seat 51, a slider 52 and an elastic positioning member 53, the back support 8 includes a cushion 81 and a support rod 82, the sliding seat 51 has a slide groove 511 and a slide hole 512 that are interconnected, wherein the slide groove 511 is located on the inner side of the slide hole 512, the slide hole 512 and the slide groove 511 are both vertically oriented, the inner side of the slide groove 511 is provided with a slider 52 that can slide up and down in the slide groove 511, the cushion 81 is fixedly connected to the slider 52 through the support rod 82, that is, the support can be bent up and down. The support rod 82 can drive the internal slider 52 to slide up and down along the slide groove 511 in the sliding seat 51. An elastic positioning member 53 is installed on one side of the slider 52. The inner side of the slide groove 511 is provided with a plurality of positioning grooves 513 in an array along its height direction. The output end of the elastic positioning member 53 can abut against the positioning groove 513. It should be pointed out that the number of elastic positioning members 53 here is preferably one. In order to ensure stability, two groups can be provided, and corresponding positioning grooves 513 are also provided on the slide grooves 511 on both sides.

[0030] Specifically, the slider 52 includes a sliding portion 521 and a connecting portion 522, wherein the sliding portion 521 is located in the slide groove 511 and slides up and down, and the connecting portion 522 extends out of the slide hole 512 and is fixedly connected to the support rod 82 of the back support 8. Here, the cushion 81 can be a single-piece cushion 81, and the single-piece cushion 81 is set in a C shape to fit the back curve of the human body. Of course, in other optional embodiments, in order to increase the support area of ​​the cushion 81, the support rod 82 has a forked structure 821, and the end of the forked structure 821 It is fixedly connected to the cushion 81, that is, each end of the forked structure 821 is connected to a cushion 81, and the number of the forked structures 821 here can be customized according to actual conditions, such as selecting two branches for normal and general use, and each side of the branch is connected to a cushion 81, and the two cushions 81 form an angle, and together enclose a curve that conforms to the back of the human body. In addition, the cushion 81 here is preferably supported by a plastic with elastic properties. In individual cases, a spring 531 mechanism can be installed between the cushion 81 and the forked structure 821 to buffer an impact when a person leans over.

[0031] Specifically, an elastic channel 523 is laterally arranged on the inner side of the slider 52, and the elastic positioning member 532 is embedded in the elastic channel 523. The elastic positioning member 53 includes a spring 531 and a positioning block 532, wherein one side of the positioning block 532 is fixedly connected to the output end of the spring 531, and the other side can abut against the positioning groove 513 to complete the elastic positioning of the slider 52 when it slides up and down.

[0032] It should be noted that, here, the positioning groove 513 and the positioning block 532 adopt a matching method in which both the upper and lower surfaces are arc surfaces or inclined surfaces. Compared with the matching method of a unidirectional arc surface or a unidirectional straight surface, this matching method allows the slider 52 to carry the internal positioning block 532 to perform an elastic abutment action relative to the positioning groove 513 when pushed by a person, thereby forming a gear position at the position of each positioning groove 513. After being fixed at that gear position, when you continue to push up or down with force, it enters the next positioning groove 513, thereby completing the adjustment of the height position of the backrest support 8 in the backrest 2. For users of different groups and different body shapes, they can adjust the backrest support 8 to match their most comfortable body position, which is equivalent to adjusting the curvature of the backrest 2.

[0033] Specifically, the cushion 81 has a supporting arc surface 811 corresponding to the curvature of the human back. A support position or support area that supports the entire human back is formed between the multiple cushions 81. Compared with a single cushion 81, multiple cushions 81 can form a wider and more varied support area. In some cases, a damping rotation structure can be set between the cushion 81 and the end of the branch structure to fine-tune the angle of the cushion 81, thereby achieving the purpose of adjusting the angle of the cushion 81 to meet the needs of users with different body shapes and different needs for adjusting the backrest support 8.

[0034] Specifically, the backrest 2 includes a support frame 6 and a support sleeve 7 sleeved on the support frame 6, wherein the backrest end 71 and the neckrest end 72 are both located on the support sleeve 7 (existing technology), the support frame 6 includes an integrally formed bottom support frame 61, a middle support frame 62, a side support frame 63 and a top support frame 64, wherein the sliding seat 51 is located on the inner side of the middle support frame 62, the side support frame 63 is used to provide waist support for the body, and the top support frame 64 has an arc-shaped curved portion 641 that bends backwards, and the arc-shaped curved portion 641 is sleeved on the support sleeve 7 to form an arc-shaped curved position 721 of the neckrest, and the side support frame 63 and the middle support frame 62 are connected to each other. A first hand-reaching position 601 is formed between the support frames 62, and a second hand-reaching position 602 is formed between the middle support frame 62 and the top support frame 64, wherein the first hand-reaching position 601 and the second hand-reaching position 602 are both used to manually control the up and down sliding of the backrest support 8, the first hand-reaching position 601 is horizontally oriented, and the second hand-reaching position 602 is located at the upper end of the first hand-reaching position 601, and the user can reach out from the upper end to grab the support rod 82 and then adjust the position of the cushion 81, while the first hand-reaching position 601 is located at the lower end, which is a horizontal through-type hand-reaching slot, and the user can squat and reach in to grab the support rod 82 to adjust it up and down.

[0035] Specifically, the support feet 3 include a lifting mechanism 31 (prior art) and universal wheels 32. One end of the lifting mechanism 31 is installed at the lower end of the seat 1, and the other end is fixedly connected to the upper end of the foot claw frame 33 and its lifting is controlled by a control switch located on one side of the seat 1. Universal wheels 32 are installed on the outer side of the foot claw frame 33.

[0036] In other alternative embodiments, in order to increase the angle at which the backrest 2 flips backward, in this office chair, a cylinder component 101 (or telescopic rod component) is provided at the bottom of the seat 1. A hinge mechanism 102 is provided between one side of the backrest 2 and the armrest 4. The bottom of the backrest 2 is connected to the cylinder component 101 through a link mechanism 103, so that when the backrest 2 flips backward, the cylinder component 101 is compressed to store energy in the cylinder component 101. When a person leaves, the backrest 2 is reset by the resilience of the cylinder.

[0037] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An office chair with an adjustable backrest support for easy neck support, comprising a seat, a backrest and support feet. The two sides of the seat are connected with armrests, the back side is connected with the backrest, and the bottom is connected with the support feet. It is characterized in that: The backrest includes an integrally formed backrest end and a neckrest end. The neckrest end is located at the upper end of the backrest end, and the neckrest end has an arc-shaped bending position that conforms to the curvature of the human neck. A backrest support is installed inside the backrest, and the output end of the backrest support abuts against the backrest end. The backrest support slides up and down inside the backrest through an adjustable sliding mechanism.

2. The adjustable backrest support and neck-rest convenient office chair according to claim 1, wherein: The adjustable sliding mechanism includes a sliding seat, a slider, and an elastic positioning member. The backrest support includes a cushion and a support rod. The sliding seat has a mutually communicating chute and a sliding hole, where the chute is located inside the sliding hole. Inside the chute, there is a slider that can slide up and down in the chute. The cushion is fixedly connected to the slider through the support rod. An elastic positioning member is installed on one side of the slider. Along the height direction of the chute, several positioning grooves are arranged in an array, and the output end of the elastic positioning member can abut in the positioning grooves.

3. The adjustable backrest support and neck-rest convenient office chair according to claim 2, characterized in that: The slider includes a sliding portion and a connecting portion. The sliding portion slides up and down inside the chute, and the connecting portion extends out of the sliding hole and is fixedly connected to the support rod of the backrest support. The support rod has a bifurcated structure, and the ends of the bifurcated structure are fixedly connected to the cushion.

4. The adjustable backrest support and neck-rest convenient office chair according to claim 2, characterized in that: An elastic channel is provided inside the slider, and the elastic positioning member is embedded in the elastic channel. The elastic positioning member includes a spring and a positioning block. One side of the positioning block is fixedly connected to the output end of the spring, and the other side can abut against the positioning groove to complete the elastic positioning when the slider slides up and down.

5. The adjustable backrest support and neck-rest convenient office chair according to claim 2, wherein: The cushion has a support arc surface corresponding to the curvature of the human back, and a support position for supporting the entire human back is formed between multiple cushions.

6. The adjustable backrest support and neck-rest convenient office chair according to claim 1, characterized in that: The backrest includes a support skeleton and a support sleeve sleeved on the support skeleton. The backrest end and the neckrest end are both located on the support sleeve. The support skeleton includes an integrally formed bottom support frame, a middle support frame, a side support frame, and a top support frame. The sliding seat is located inside the middle support frame. The side support frame is used to provide support for the waist of the body. The top support frame has an arc-shaped bending portion that bends backward. After the arc-shaped bending portion sleeves the support sleeve, an arc-shaped bending position for the neckrest is formed. A first reaching position is formed between the side support frame and the middle support frame, and a second reaching position is formed between the middle support frame and the top support frame. Both the first reaching position and the second reaching position are used to manually control the up and down sliding of the backrest support.

7. A backrest support adjustable and convenient neck-rest office chair according to any one of claims 1-6, characterized in that: The support feet include a lifting mechanism and universal wheels. One end of the lifting mechanism is installed at the lower end of the seat, and the other end is fixedly connected to the upper end of the foot claw frame and its lifting is controlled by a control switch located on one side of the seat. Universal wheels are installed on the outside of the foot claw frame.

8. The adjustable backrest support and neck-rest convenient office chair according to claim 7, characterized in that: A cylinder component is provided at the bottom of the seat, and a hinge mechanism is provided between one side of the backrest and the armrest. The bottom of the backrest is connected to the cylinder component through a link mechanism.

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