Office chair externally-hung foot support

Abstract

The utility model discloses an outer hanging foot support of an office chair, which comprises a foot support pad (1) used for supporting feet, a connecting support (2) fixed with the bottom of a chair seat of the office chair and a telescopic cylinder (3), and the foot support pad (1) is connected with the connecting support (2) through a multi-connecting rod mechanism (4). A piston rod of the telescopic air cylinder (3) faces the foot supporting pad (1) and is hinged to one first connecting rod (5) of the multi-connecting-rod mechanism (4), the piston rod of the telescopic air cylinder (3) stretches out to push the first connecting rod (5) to swing upwards, and the multi-connecting-rod mechanism (4) drives the foot supporting pad (1) to swing upwards. And the piston rod of the telescopic cylinder (3) retracts inwards to push the first connecting rod (5) to swing downwards, so that the multi-connecting rod mechanism (4) drives the foot support pad (1) to swing downwards. According to the foot support, an external hanging structure is adopted, the telescopic air cylinder and a multi-connecting-rod mechanism are combined for driving, the foot support can be positioned at any angle, and operation and adjustment are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to office furniture technical field, specifically is an office chair outer hanging foot support. BACKGROUND

[0002] At present, there is a kind of office dual-purpose function chair frame, which combines office chair and sofa together, and has the office function of seat and the lying function of sofa, the office dual-purpose function chair frame, including support seat, backrest and foot support mechanism, the foot support mechanism is installed on the support seat, the backrest is rotatably connected on the support seat or the foot support mechanism, the foot support mechanism includes seat plate and telescopic part, the seat plate is connected with the telescopic part, the telescopic part is a telescopic structure composed of multiple connecting rods. The connecting place of the backrest and the support seat or the foot support mechanism is provided with an angle adjuster, and the angle adjuster adjusts the angle of the backrest rotation. The foot support mechanism with the above structure and the seat are integrated structure, the structure is relatively complex, when designing office chair, the foot support mechanism needs to be considered, and how the two are connected, the structure is relatively complex, and there is no practical product in the field of office chair at present.

[0003] Also disclosed is a foot support bracket provided at the bottom of a seat and freely telescopic in parallel, having a fixing mechanism, a slide rail mechanism provided at the bottom of the seat, a supporting mechanism provided on the fixing mechanism, a front supporting plate and a rear supporting plate that are foldable and non-foldable and are combined to form an opening and closing mechanism, and are provided at the joint of the front supporting plate and the rear supporting plate of the supporting mechanism. The foot support bracket of the structure is telescopic from the bottom of the seat and can be pulled out, but the foot support plate needs to be manually rotated in angle, that is, two sets of mechanisms, so that the actual operation is not convenient, and it is more not used in office environment. UTILITARIAN CONTENT

[0004] The utility model solves the technical problem, provides a kind of structure using outer hanging, it is applicable to various office chairs, and the telescopic cylinder is combined with multiple connecting rod mechanism to drive, can be positioned in any angle by foot support, the office chair outer hanging foot support of convenient operation and adjustment.

[0005] The utility model discloses a technical scheme, provide an office chair outer hanging foot support with the following structure, the foot support pad for putting feet, the connecting support fixed with the office chair seat bottom and telescopic cylinder, the foot support pad is connected with the connecting support through multi-connecting rod mechanism, the body of telescopic cylinder is fixed on the connecting support, the piston rod of telescopic cylinder is towards the direction of foot support pad and is hinged with one first connecting rod of multi-connecting rod mechanism, and the first connecting rod adopts lever structure, and the tail end of first connecting rod is rotatably connected with connecting support, the piston rod of telescopic cylinder extends and then pushes first connecting rod to swing upwards, makes multi-connecting rod mechanism drive foot support pad to swing upwards, the piston rod of telescopic cylinder is retracted and then pushes first connecting rod to swing downwards, makes multi-connecting rod mechanism drive foot support pad to swing downwards.

[0006] The multi-connecting rod mechanism is provided with a second connecting rod, and the foot support pad is fixed with the second connecting rod.

[0007] The multi-connecting rod mechanism includes two symmetrical groups, one group of the telescopic cylinder is connected, and the two symmetrical groups of the multi-connecting rod mechanism are synchronously operated during telescoping.

[0008] Each of the two symmetrical groups includes a third connecting rod, a fourth connecting rod and a fifth connecting rod in addition to the first connecting rod and the second connecting rod, one end of the third connecting rod is hinged with the connecting support, the fourth connecting rod is a lever, one end of the fourth connecting rod is hinged with the proximal end of the second connecting rod, the fulcrum is located in the middle and connected with the third connecting rod, the other end is connected with one end of the first connecting rod, one end of the fifth connecting rod is hinged with the distal end of the second connecting rod, and the other end is hinged with the third connecting rod.

[0009] The top of the connecting support is provided with a plurality of connecting ends and positioning ends for fixing and positioning with the bottom of the office chair seat.

[0010] The connecting support includes two parallel connecting rods and a first cross beam, and two ends of the first cross beam are fixed with one connecting rod respectively.

[0011] The multi-connecting rod mechanism includes two symmetrical groups, and a plurality of second cross beams are arranged in the middle.

[0012] The control button of the telescopic cylinder is located on one side of the connecting support.

[0013] After the above structure is adopted, the utility model has the following advantages: 1, the outer hanging type can be adapted to various structures of office chairs, is convenient to install, and has better practical applicability.

[0014] 2. In use, the piston rod of the telescopic air cylinder extends to push the first connecting rod to swing upward, so that the multi-connecting rod mechanism drives the foot supporting pad to swing upward; the piston rod of the telescopic air cylinder retracts to push the first connecting rod to swing downward, so that the multi-connecting rod mechanism drives the foot supporting pad to swing downward, which is convenient to operate, and can be positioned at any angle by adjusting the telescopic air cylinder.

[0015] 3. The unfolding and folding and the angle adjustment of the foot supporting pad are realized by a set of mechanisms, so that the structure is more compact and the reliability is better.

[0016] As an improvement, the multi-connecting rod mechanism comprises two symmetrical groups, the telescopic air cylinder is connected with one of the two groups, and the two symmetrical groups of the multi-connecting rod mechanism move synchronously during telescoping, so that the force on the foot supporting pad is more balanced and tilting is avoided.

[0017] As an improvement, each of the two symmetrical groups comprises a third connecting rod, a fourth connecting rod and a fifth connecting rod in addition to the first connecting rod and the second connecting rod, one end of the third connecting rod is hingedly connected with the connecting support, the fourth connecting rod is a lever, one end of the fourth connecting rod is hingedly connected with the proximal end of the second connecting rod, the fulcrum is located in the middle and connected with the third connecting rod, the other end is connected with one end of the first connecting rod, and one end of the fifth connecting rod is hingedly connected with the distal end of the second connecting rod, so that the multi-connecting rod mechanism is simple in structure, direct in driving and good in reliability.

[0018] As an improvement, the top of the connecting support is provided with a plurality of connecting ends and positioning ends for fixing and positioning with the bottom of the seat of the office chair, so that the bottom of the seat of the office chair is conveniently fixed and positioned.

[0019] As an improvement, the connecting support comprises two parallel connecting rods and a first cross beam, and the two ends of the first cross beam are fixed with one connecting rod to increase the connecting strength.

[0020] As an improvement, the multi-connecting rod mechanism comprises two symmetrical groups, and a plurality of second cross beams are arranged in the middle to increase the connecting strength. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a split schematic view of the office chair external foot supporting pad of the utility model.

[0022] Figure 2 It is a single group schematic view of the connecting rod mechanism of the utility model.

[0023] Figure 3 It is a schematic view of the unfolded state of the office chair external foot supporting pad of the utility model.

[0024] Figure 4 It is Figure 4 another perspective view schematic view.

[0025] Figure 5The utility model discloses an office chair outer hanging foot support's contraction state's schematic diagram.

[0026] Figure 6 For Figure 5 Another perspective schematic diagram.

[0027] As shown in the figure:

[0028] 1, foot pad, 2, connecting support, 3, telescopic cylinder, 4, multi-link mechanism, 5, first connecting rod, 6, second connecting rod, 7, third connecting rod, 8, fourth connecting rod, 9, fifth connecting rod, 10, connecting rod, 11, first crossbeam, 12, second crossbeam, 13, control button. DETAILED DESCRIPTION

[0029] The utility model will be further described below in conjunction with the drawings.

[0030] As Figures 1-6 Shown, the utility model discloses an office chair outer hanging foot support, for the foot pad 1 of foot, with the connecting support 2 of office chair seat bottom fixed and telescopic cylinder 3, the foot pad 1 is connected with connecting support 2 through multi-link mechanism 4, the body of telescopic cylinder 3 is fixed on connecting support 2, the piston rod of telescopic cylinder 3 is towards the direction of foot pad 1 and with one first connecting rod 5 of multi-link mechanism 4 articulates, and the first connecting rod 5 is with lever structure, and the tail end of this first connecting rod 5 is rotationally connected with connecting support 2. The piston rod of telescopic cylinder 3 extends and then promotes first connecting rod 5 to swing upwards, makes multi-link mechanism 4 drive foot pad 1 to swing upwards, the piston rod of telescopic cylinder 3 is retracted and then promotes first connecting rod 5 to swing downwards, makes multi-link mechanism 4 drive foot pad 1 to swing downwards.

[0031] The multi-link mechanism 4 is equipped with second connecting rod 6, and the foot pad 1 is fixed with second connecting rod 6.

[0032] The multi-link mechanism 4 includes symmetrical two groups, and one group is connected with telescopic cylinder 3, and the symmetrical two groups of mechanisms of multi-link mechanism 4 are synchronous action when telescoping. Except first connecting rod 5 and second connecting rod 6, each group in the symmetrical two groups still includes third connecting rod 7, fourth connecting rod 8 and fifth connecting rod 9.

[0033] As Figure 2 Shown, the right end of third connecting rod 7 is a plate structure, and the one end is articulated with connecting support 2, and the left end is frame structure, including inner side plate and outer side plate.

[0034] The fourth connecting rod 8 is a lever, one end of which is hinged to the proximal end of the second connecting rod 6, the fulcrum is located in the middle and connected to the outer side plate of the third connecting rod 7, the other end is connected to one end of the first connecting rod 5, one end of the fifth connecting rod 9 is hinged to the distal end of the second connecting rod 6, and the other end is hinged to the inner side plate of the third connecting rod 7. The first connecting rod 5 drives the fourth connecting rod 8 to drive the foot support pad 1 fixed with the second connecting rod 6.

[0035] As shown in Figure 3 , the top of the connecting bracket 2 is provided with a plurality of connecting ends and positioning ends for fixing and positioning with the bottom of the office chair seat, such as buckle 14 and fixed plate 15 for installing bolts.

[0036] The connecting bracket 2 includes two parallel connecting rods 10 and a first cross beam 11, the two ends of the first cross beam 11 are fixed with one connecting rod 10 respectively. The multi-link mechanism 4 includes two symmetrical groups, and a plurality of second cross beams 12 are fixed in the middle.

[0037] The control button 13 of the telescopic air cylinder 3 is located on one side of the connecting bracket 2, generally commonly used is set on the right side, convenient for right hand operation.

[0038] As shown in Figure 3 and Figure 4 , the expansion state of the office chair external foot support, the piston rod of the telescopic air cylinder 3 is extended to push the first connecting rod 5 to swing upward, so that the multi-link mechanism 4 drives the foot support pad 1 to swing upward. At this time, the working process of the multi-link mechanism, the first connecting rod 5 and the third connecting rod 7 swing upward, the bottom of the fourth connecting rod 8 swings downward, and the top swings upward, so that the second connecting rod 6 swings upward, and the bottom fifth connecting rod 9 swings upward, so that the second connecting rod 6 is positioned upward, and in the case that the piston rod of the telescopic air cylinder 3 is fully extended, the second connecting rod 6 is in a flat state, and at this time the foot support pad 1 is also in a flat state.

[0039] As shown in Figure 5 and Figure 6 , the contraction state of the office chair external foot support, the piston rod of the telescopic air cylinder 3 is retracted to push the first connecting rod 5 to swing downward, so that the multi-link mechanism 4 drives the foot support pad 1 to swing downward. At this time, the working process of the multi-link mechanism, the first connecting rod 5 and the third connecting rod 7 swing downward, the bottom of the fourth connecting rod 8 swings upward, and the top swings downward, so that the second connecting rod 6 swings downward, and the bottom fifth connecting rod 9 swings downward, so that the second connecting rod 6 is positioned downward, and in the case that the piston rod of the telescopic air cylinder 3 is fully extended, the second connecting rod 6 is in a vertical state, and at this time the foot support pad 1 is also in a vertical state.

Claims

1. An office chair external footrest, characterized by: The utility model relates to a foot rest pad (1) for foot rest, a connecting support (2) fixed with the bottom of office chair seat and a telescopic cylinder (3), the foot rest pad (1) is connected with the connecting support (2) through multi-link mechanism (4), the body of telescopic cylinder (3) is fixed on the connecting support (2), the piston rod of telescopic cylinder (3) is towards the direction of foot rest pad (1) and is hinged with one first link (5) of multi-link mechanism (4), and the first link (5) adopts lever structure, and the tail end of first link (5) is rotatably connected with connecting support (2), the piston rod of telescopic cylinder (3) extends and then pushes first link (5) to swing upwards, makes multi-link mechanism (4) drive foot rest pad (1) swing upwards, the piston rod of telescopic cylinder (3) is retracted and then pushes first link (5) to swing downwards, makes multi-link mechanism (4) drive foot rest pad (1) swing downwards.

2. The office chair according to claim 1, wherein: The second link (6) is fixed with the foot rest pad (1).

3. The office chair footrest according to claim 1 or 2, characterized in that: The multi-link mechanism (4) includes two symmetrical groups, and the telescopic cylinder (3) is connected with one group, and the two symmetrical groups of multi-link mechanism (4) move synchronously during telescoping.

4. The office chair according to claim 3, wherein: Each of the two symmetrical groups includes a third link (7), a fourth link (8) and a fifth link (9) in addition to the first link (5) and the second link (6), one end of the third link (7) is hinged with the connecting support (2), the fourth link (8) is a lever, one end of the fourth link (8) is hinged with the proximal end of the second link (6), the fulcrum is located in the middle and is connected with the third link (7), the other end is connected with one end of the first link (5), one end of the fifth link (9) is hinged with the distal end of the second link (6), and the other end is hinged with the third link (7).

5. The office chair according to claim 3, wherein: The top of the connecting support (2) is provided with a plurality of connecting ends and positioning ends for fixing and positioning with the bottom of the office chair seat.

6. The office chair according to claim 3, wherein: The connecting support (2) includes two parallel connecting rods (10) and a first cross beam (11), and two ends of the first cross beam (11) are fixed with one connecting rod (10) respectively.

7. The office chair according to claim 3, wherein: The multi-link mechanism (4) includes two symmetrical groups, and a plurality of second cross beams (12) are arranged in the middle for fixation.

8. The office chair according to claim 1, wherein: The control button (13) of the telescopic cylinder (3) is located on one side of the connecting support (2).

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