Office chair backrest with elastic steel wire energy absorption function

Abstract

The utility model belongs to the technical field of office chairs, and particularly relates to an office chair backrest with an elastic steel wire energy absorption function. The backrest further comprises a backrest frame, a fixing clamp, a supporting reinforcing beam, a sliding rail with a tooth groove, a waist supporting sliding block and an elastic rope. A supporting reinforcing beam is connected to the inner side of the lower end of the backrest frame, a circle of fixing clamps are connected to the surface of the backrest frame through bolts, an integrated sliding rail with a tooth groove is arranged between a left beam and a right beam of the backrest frame, a waist supporting sliding block is movably connected into the sliding rail with the tooth groove in a clamped mode, and a plurality of elastic ropes are connected between the left waist supporting sliding block and the right waist supporting sliding block. A waist supporting structure of a traditional office chair is improved, the elastic rope is used for replacing a traditional hard waist support, the fitness of the waist can be improved, meanwhile, the telescopic elastic line is soft, the pressure of a human body on the chair can be more evenly dispersed, the situation that local pressure is too large is reduced, and the sitting comfort is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of office chairs, in particular to an office chair backrest with an elastic steel wire energy absorption function. Background Art

[0002] As living standards continue to improve, competition among office workers is becoming increasingly fierce, and working hours and intensity are constantly increasing. Therefore, companies around the world are paying more and more attention to the selection of employee seating. As companies improve their seating standards and reduce employee fatigue caused by excessive workload, the functionality and ergonomics of seating are constantly developing. The main function of current office chairs is to improve office efficiency and reduce work pressure and fatigue. Having a good office chair also makes working a pleasure.

[0003] Currently, office chairs on the market have relatively simple structures, and most lumbar supports use a rigid structure. This rigid support structure causes stiffness and pain in the user, which can easily lead to lumbar discomfort after prolonged sitting. Furthermore, the lumbar support provided is unstable and poorly fitted, preventing muscle fatigue or injury from a sudden loss of lumbar support. Therefore, an office chair backrest with an elastic steel wire energy-absorbing function is proposed. Utility Model Content

[0004] In order to solve the defects and shortcomings of the existing technology, the purpose of the present invention is to provide an office chair backrest with an elastic steel wire energy absorption function, which is simple in structure, reasonably designed and easy to use. It improves the lumbar support structure of the traditional office chair and uses elastic ropes instead of traditional rigid lumbar supports to improve the fit of the waist. At the same time, the soft retractable elastic wire can disperse the pressure of the human body on the seat more evenly, reduce the situation of excessive local pressure, and improve riding comfort.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: it includes roller support feet, cylinders, seat adjustment bases, seat cushions, armrests, and backrests; a cylinder for lifting and lowering adjustment is inserted in the middle of the upper end of the roller support feet, and a seat adjustment base for sitting posture adjustment is inserted in the upper end of the cylinder, a seat cushion is provided at the upper end of the seat adjustment base, and a pair of armrests are connected to the left and right sides of the seat adjustment base; a backrest for lumbar support is provided at the rear end of the seat adjustment base; wherein, the backrest also includes a backrest frame, a fixing clamp, a support reinforcement beam, a slide rail with teeth, a lumbar support slider, and an elastic rope; the inner side of the lower end of the backrest frame is connected to the support reinforcement beam, and a circle of fixing clamps is connected to the surface of the backrest frame by bolts, and an integrated slide rail with teeth is provided in the middle of the left and right beams of the backrest frame, and the slide rail with teeth is movably clamped with a lumbar support slider, and several elastic ropes are connected between the left and right lumbar support sliders.

[0006] Preferably, a layer of tight elastic net is fixed on the surface of the backrest frame by a fixing fixture.

[0007] Preferably, the lumbar support slider is composed of a base, a cover plate, a snap-on tooth plate, and an adjustment paddle; the cover plate is fixed to the surface of the base by bolts, and an integrated snap-on tooth plate is provided on the outer side of the base, and an adjustment paddle is provided in the middle of the back side of the base.

[0008] Preferably, the snap-on tooth plate is movably inserted into the interior of the slide rail with the tooth groove, fixed by the engagement of the teeth, and unlocked by adjusting the paddle support to achieve up and down adjustment.

[0009] Preferably, a plurality of fixed slots are provided inside the base, and the top end of the elastic rope is limitedly clamped in the fixed slots.

[0010] After adopting the above structure, the beneficial effects of the utility model are:

[0011] 1. The elastic cord lumbar support offers a high degree of fit. Since waist curves vary from user to user, the elastic cord automatically adjusts its degree of extension and retraction based on the user's sitting posture and waist pressure, thereby better fitting the waist curve and providing personalized lumbar support. It also provides excellent dynamic support; as the user changes position in the office chair, the elastic cord adjusts its tension and support position accordingly, providing continuous and stable support for the waist.

[0012] 2. The elastic rope improves the comfort of waist support and can disperse pressure. The retractable elastic line is evenly distributed in the waist area. Compared with the traditional fixed support structure, it can disperse the pressure of the human body on the seat more evenly, reduce the situation of excessive local pressure, and improve riding comfort. In addition, the elastic line itself has a certain elasticity. While providing support, it will give the waist a soft sense of support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail through the following specific implementations and drawings.

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 This is a schematic structural diagram of the backrest 6 of the present utility model;

[0016] Figure 3 This is a structural diagram of the waist support slider 11 of the present utility model;

[0017] Figure 4 This is a schematic diagram of the back structure of the waist support slider 11 of the present invention;

[0018] Figure 5 This is a schematic diagram of the lumbar support slider 11 in the present invention in a clamped state;

[0019] Explanation of the accompanying drawings: roller support foot 1, cylinder 2, seat adjustment base 3, seat cushion 4, armrest 5, backrest 6, backrest frame 7, fixing clamp 8, support reinforcement beam 9, slide rail with teeth and grooves 10, lumbar support slider 11, elastic rope 12, base 13, cover plate 14, snap-on tooth plate 15, adjustment paddle 16, fixing slot 17. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0021] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0022] See Figure 1-Figure 5 As shown, this specific embodiment adopts the following technical scheme: it includes a roller support foot 1, a cylinder 2, a seat adjustment base 3, a cushion 4, an armrest 5, and a backrest 6; the cylinder 2 for lifting and adjusting is inserted in the middle of the upper end of the roller support foot 1, and the seat adjustment base 3 for sitting posture adjustment is inserted in the upper end of the cylinder 2, the upper end of the seat adjustment base 3 is provided with a cushion 4, and a pair of armrests 5 are connected to the left and right sides of the seat adjustment base 3; the rear end of the seat adjustment base 3 is provided with a backrest 6 for lumbar support; wherein, the backrest 6 also includes a backrest frame 7, a fixing clamp 8, a support reinforcement beam 9, a slide rail with a tooth groove 10, a lumbar support slider 11, and an elastic rope 12; the inner side of the lower end of the backrest frame 7 is connected to the support reinforcement beam 9, and the support reinforcement beam 9 and the backrest frame 7 are an integrated structure to increase the overall stability of the backrest. A circle of fixing clamps 8 are connected to the surface of the backrest frame 7 by bolts. An integrated slide rail 10 with teeth is set in the middle of the left and right beams of the backrest frame 7. The inner movability of the slide rail 10 with teeth is connected to the lumbar support slider 11, and several elastic ropes 12 are connected between the left and right lumbar support sliders 11.

[0023] A tightly stretched elastic mesh is clamped onto the backrest frame 7 via a fixing fixture 8. As the primary support for the backrest, the elastic mesh must maintain stability within the backrest frame 7. Hooks can be added to the inner edge of the backrest frame 7 to secure the mesh, which is then reinforced with the fixing fixture 8.

[0024] In addition, the lumbar support slider 11 is composed of a base 13, a cover plate 14, a snap-on tooth plate 15, and an adjustment paddle 16. The cover plate 14 is fixed to the surface of the base 13 by bolts. The cover plate 14 is a mosaic structure that is buckled into the interior of the base 13 to cover the internal elastic rope 12. An integrated snap-on tooth plate 15 is provided on the outside of the base 13, and an adjustment paddle 16 is provided in the middle of the back of the base 13. The snap-on tooth plate 15 is movably inserted into the interior of the slide rail 10 with teeth and fixed by the engagement of the teeth, and is unlocked by the support of the adjustment paddle 16 to achieve up and down adjustment. Several fixed slots 17 are provided inside the base 13, and the end of the elastic rope 12 is connected to the metal head and remains snapped into the fixed slot 17.

[0025] After adopting the above structure, the beneficial effects of the utility model are:

[0026] 1. The elastic cord lumbar support offers a high degree of fit. Since waist curves vary from user to user, the elastic cord automatically adjusts according to the user's sitting posture and waist pressure, thereby better fitting the waist curve and providing personalized lumbar support. It also provides excellent dynamic support. When the user changes posture in the office chair, such as leaning forward, backward, or turning left or right, the elastic cord can adjust the tension and support position accordingly, providing continuous and stable support for the waist, preventing muscle fatigue or injury caused by sudden loss of waist support.

[0027] 2. The elastic rope waist support is more comfortable and can disperse pressure. The retractable elastic line is evenly distributed in the waist area. Compared with the traditional fixed support structure, it can disperse the pressure of the human body on the seat more evenly, reduce the situation of excessive local pressure, and improve riding comfort. In addition, the elastic line itself has a certain elasticity. While providing support, it will give the waist a soft sense of support, and will not bring stiffness and pain to the user like some hard support structures.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

[0029] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An office chair backrest with an elastic steel wire energy absorption function, characterized by: It includes a roller support foot, a cylinder, a seat adjustment base, a seat cushion, an armrest, and a backrest; a cylinder for lifting and lowering adjustment is connected in the middle of the upper end of the roller support foot, and a seat adjustment base for sitting posture adjustment is connected in the upper end of the cylinder, a seat cushion is provided at the upper end of the seat adjustment base, and a pair of armrests are connected on the left and right sides of the seat adjustment base; a backrest for lumbar support is provided at the rear end of the seat adjustment base; wherein, the backrest also includes a backrest frame, a fixing clamp, a support reinforcement beam, a slide rail with teeth, a lumbar support slider, and an elastic rope; the inner side of the lower end of the backrest frame is connected to the support reinforcement beam, and a circle of fixing clamps is connected to the surface of the backrest frame by bolts, an integrated slide rail with teeth is provided in the middle of the left and right beams of the backrest frame, the slide rail with teeth is movably clamped with a lumbar support slider, and several elastic ropes are connected between the left and right lumbar support sliders.

2. The office chair backrest with elastic steel wire energy absorption function according to claim 1, characterized in that: A layer of tight elastic net is clamped and fixed on the surface of the backrest frame by a fixing fixture.

3. The office chair backrest with elastic steel wire energy absorption function according to claim 1, characterized in that: The lumbar support slider consists of a base, a cover plate, a clamping tooth plate, and an adjustment paddle; the cover plate is fixed to the surface of the base by bolts, and an integrated clamping tooth plate is provided on the outside of the base, and an adjustment paddle is provided in the middle of the back of the base.

4. The office chair backrest with elastic steel wire energy absorption function according to claim 3, characterized in that: The clamping tooth plate is movably inserted into the slide rail with the tooth groove, fixed by the engagement of the teeth, and unlocked by adjusting the paddle support to achieve up and down adjustment.

5. The office chair backrest with elastic steel wire energy absorption function according to claim 3, characterized in that: The base is provided with a plurality of fixed slots inside, and the top end of the elastic rope is limitedly clamped in the fixed slots.

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