CN204181262U - A kind of office chair - Google Patents

Abstract

The utility model relates to an office chair. An office chair comprises a base, a support rod, a tray, a seat cushion and a backrest, the lower end of the support rod is connected to the base, the upper end of the support rod is connected to the tray, a seat cushion is arranged on the tray, and two swing arms are arranged symmetrically on both sides of the front end of the seat cushion. The rear end of the swing arm is hinged with the positions on both sides of the front end of the seat cushion, and the front end of the swing arm is connected with a foot rest cushion, the swing arm is turned backward so that the foot rest cushion is stored at the position behind the seat cushion, and the swing arm is turned forward to prepare for Rest your feet. The combination of the swing arm and the footrest pad forms a footrest for resting the feet. When the footrests of the chair are in use, turn the footrests forward to the angle of rest, so that the feet can rest on the footrests, so that the feet can rest freely. rest. At the same time, when the pedals are not in use, the pedals can be folded, and the footrest cushions can be stored in the space behind the seat cushion, which greatly reduces the occupied space.

Description

an office chair

technical field

The utility model belongs to the field of household articles, in particular to an office chair.

Background technique

Chairs, as rest furniture commonly used in people's daily life, occupy an important position in people's lives. Traditional chairs do not have pedals, or have pedals but the pedals are fixed at a certain angle, cannot be folded, and take up a lot of space.

Utility model content

The purpose of this utility model is to provide an office chair, which has a relatively simple structure and connection method. When resting, the pedals can be turned forward to a certain angle, so that the feet can rest on the pedals and rest; when not in use When pedaling, flip the pedals back and store them behind the seat cushion, which takes up almost no extra space.

The technical solution adopted by the utility model to solve the above problems is:

An office chair, comprising a base, a support rod, a tray, a cushion and a backrest, the lower end of the support rod is connected to the base, the upper end of the support rod is connected to the tray, a seat cushion is arranged on the tray, and two swing arms are arranged symmetrically on both sides of the front end of the seat cushion. The rear end of the swing arm is hinged with the positions on both sides of the front end of the seat cushion, and the front end of the swing arm is connected with a foot rest cushion, the swing arm is turned backward so that the foot rest cushion is stored at the position behind the seat cushion, and the swing arm is turned forward to prepare for Rest your feet.

The combination of the swing arm and the footrest cushion forms a footrest for resting the feet, and there are various forms of support and fixation for the swing arm. For example, the middle part of the swing arm can be hinged with an outrigger. Open the outriggers and stand on the ground to support the swing arm, which is convenient for resting the feet. This is not a practical invention point of the present invention, and will not be repeated here; Into the space behind the seat cushion, greatly reducing the occupied space.

Preferably, the office chair also includes a bracket for installing the seat cushion, the bracket includes fixed brackets arranged on both sides of the seat cushion, the two fixed brackets are connected by a fixed steel plate, and the fixed steel plate is fixed to the upper end of the tray connected, the swing arm is hinged to the front end of the fixed bracket.

Preferably, the swing arm is a telescopic swing arm. The swing arm is a telescopic swing arm, which can further reduce the space occupied by the swing arm when it is in the folded state, and when it is used to rest the feet, the length of the swing arm can be determined according to the length of different people's legs. Adapt to larger crowds.

Preferably, the bottom end of the backrest is recessed backward according to a certain arc to form a space for placing the footrest cushion when the swing arm is folded.

Preferably, the footrest cushion includes a first cushion, the first cushion is hinged to the front end of the swing arm, one end of the second cushion is hinged to the first cushion, and the other end is connected to two brackets arranged on both sides of the swing arm. A "U" shaped slider is hinged. When it is necessary to rest the feet, expand the foot rest cushion to the maximum, give the feet the largest support surface, reduce the load per unit area, so that people can get a good rest effect. When the swing arm is folded, the occupied space is further reduced by folding the first cushion and the second cushion.

Compared with the prior art, the utility model has the following advantages and effects:

The utility model adopts the swing arm to connect the foot rest cushion, and the swing arm is pivotally connected with the front end of the seat cushion. When in use, the swing arm is turned forward so that the foot rest cushion can be used at a certain position in front of the seat, and it can be turned backward when not in use. The swing arm allows the footrest cushion to be hidden behind the seat cushion, which takes up almost no space, and the overall appearance is hardly affected after storage.

Moreover, other types of support tripods on the market are due to unreasonable structural design, and the footrest cushion supports only to the calf part, and the blood pressure is more serious; and the utility model has solved the above problems ingeniously: by setting the swing arm as The telescopic swing arm makes the swing arm stretch or contract after being unfolded, so that the support length is sufficient to reach the heel, the support is more effective and comfortable, and the support strength is sufficient to meet all kinds of people. In order to make the footrest more comfortable when resting, a footrest cushion is also provided at the front end of the swing arm.

Description of drawings

Fig. 1 is a schematic structural view of the swing arm of the present invention in a folded state.

Fig. 2 is a schematic structural view of the swing arm of the present invention in an open state.

Fig. 3 is a schematic structural view of the pedal, the ratchet recliner, the fixing bracket, and the bracket of the backrest in the embodiment.

Fig. 4 is an enlarged view at point A in Fig. 3 .

Fig. 5 is another perspective view at A in Fig. 3 .

Fig. 6 is a schematic diagram of the state where the gear position is in the first gear in the embodiment.

Fig. 7 is an enlarged view at B in Fig. 6 .

Fig. 8 is a schematic diagram of the state where the gear position is in the second gear in the embodiment.

Fig. 9 is an enlarged view at point C in Fig. 8 .

Fig. 10 is a schematic diagram of the state where the gear position is in the third gear in the embodiment.

FIG. 11 is an enlarged view at D in FIG. 10 .

Fig. 12 is a schematic diagram of the state where the gear position is in the fourth gear in the embodiment.

FIG. 13 is an enlarged view at E in FIG. 12 .

Fig. 14 is a schematic diagram of the state where the gear position is in neutral in the embodiment.

Fig. 15 is an enlarged view at point F in Fig. 14 .

Fig. 16 is a schematic diagram of the folded state of the swing arm in the embodiment.

FIG. 17 is an enlarged view at G in FIG. 16 .

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the utility model and the utility model is not limited to the following examples.

As shown in Fig. 1 to Fig. 2, a kind of chair that is convenient for resting comprises base 1, and base 1 is regular five-pointed star shape, and it comprises five supports of equal length, and one end of support is provided with wheel; Base 1 is fixedly connected with supporting shaft 2 lower ends, The upper end of the support shaft 2 is connected to the tray 3, and the support shaft 2 is provided with an air rod spring device, which can adjust the height. The tray 3 is provided with a seat cushion 4, the left and right sides of the tray 3 are provided with handrails 5, and the rear portion of the tray 3 is provided with a backrest 6, and the bottom end of the backrest 6 is sunken inwardly by a certain arc to form a space 11. Two swing arms 71 are symmetrically arranged on both sides of the front end of the seat cushion 4, and the front ends of the two swing arms 71 are connected by a support, the rear end of the swing arm 71 is hinged with the positions on both sides of the front end of the seat cushion 4, and the front end of the swing arm 71 is connected to the support A footrest cushion 9 is hinged on the top, and the swing arm 71 is turned backward so that the footrest cushion 9 is accommodated in the space 11 behind the seat cushion 4. The swing arm 71 is turned forward and fixed at a certain position by the ratchet recliner 8 to Make foot rest cushion 9 play a role and realize foot rest. Footrest cushion 9 comprises first cushion 91, and first cushion 91 is hinged with the support that connects two swing arms 71 front ends, and second cushion 92 one end is hinged with first cushion 91, and the other end is arranged on swing arm. " U " shape slide block 93 on 71 is hinged by a bearing pin. After the swing arm 71 is unfolded, the length can reach the user's heel, and the support is more effective and comfortable. Since there are fewer blood vessels in the heel, there is less compression on the blood vessels of the human body, which is beneficial to health. And after the footrest cushion 9 is fully deployed, the supporting surface to the feet becomes very large, which further reduces the compression on the blood vessels and makes people more comfortable when resting.

As shown in Figures 3 to 5, on the tray 3, a bracket is also arranged under the cushion 4, and the bracket includes two fixed brackets 72 arranged on both sides of the cushion 4, and the two fixed brackets 72 are fixed by The steel plates 10 are connected, and the fixed steel plate 10 is fixedly connected with the tray 3 by screws. The front ends of the two fixed brackets 72 are provided with shaft seats 89, shaft bottom covers 81 are fixed on the shaft seats 89, shaft outer covers 86 are fixed on the shaft bottom covers 81, and shaft bottom covers 81 and shaft outer covers 86 pass through the first pin. The shaft 87 is connected, and the center area of the gap between the shaft bottom cover 81 and the shaft outer cover 86 is provided with a locking piece 82. The rear end of the swing arm 71 forms a ratchet 83 with one-way teeth 831 on the periphery, and the ratchet 83 extends into the shaft. Between the bottom cover 81 and the shaft outer cover 86, the locking piece 82 is attached to the wheel surface of the ratchet 83, and the centers of the ratchet 83 and the locking piece 82 are jointly connected with the first pin shaft 87 for rotation; A pawl 84 that cooperates with the ratchet 83 and the locking piece 82 and an elastic member 85 that cooperates with the pawl 84 are provided in the edge area of the gap between the shaft cover 86 and the pawl 84 passes through the second pin shaft 88 Hinged with the shaft bottom cover 81 and the shaft outer cover 86, the pawl 84 maintains a tendency to offset against the outer peripheral edge of the locking piece 82 and the ratchet wheel 83 under the action of the elastic member 85; The outer periphery of the sheet 82 is provided with fan-shaped first notch 822 and second notch 823, and a stopper 824 is formed between the first notch 822 and the second notch 823; The shifting block 832, the shifting block 832 is in the first gap 822 and when the swing arm 71 rotates, the card position piece 82 is rotated, and the outer peripheral edge 821 of the card position piece 82 outside the first gap 822 and the second gap 823 protrudes from the The outer edge of the one-way tooth 831 disengages the ratchet 84 from the one-way tooth 831 , and the ratchet 84 engages with the one-way tooth 831 at a different position after entering the second notch 823 .

As shown in FIG. 6 to FIG. 17 , due to the radian of the second notch 823 , four one-way teeth 831 can be accommodated. Therefore, the swing arm 71 has four gear positions and can be fixed at corresponding four angles. When the swing arm 71 is in the retracted state, the pawl 84 abuts against the outer peripheral edge 821 of the locking piece other than the first notch 822 and the second notch 823 , so that the pawl 84 and the one-way tooth 831 are disengaged. When it is necessary to open the pedal, turn the swing arm 71. When turning to a certain angle, the shifting block 832 on the end face of the ratchet 83 and the stopper 824 on the card position piece 82 will resist, and now continue to rotate the swing arm, and the stopper 824 toggles the locking piece 82 and rotates thereupon until the pawl 84 enters the second notch 823 and engages with the one-way tooth 831. At this time, the swing arm 71 is in the position of the first gear, that is, the swing arm 71 is opened. The angle is at its maximum. Due to the setting of the ratchet positioning device 8, the swing arm 71 can only be adjusted in the direction that the angle decreases at this time, until it is adjusted to the most suitable angle for one's own rest. When the swing arm 71 needs to be folded, turn the swing arm 71 in the opposite direction to the fourth gear position, and continue to turn the swing arm 71 at this time, and the shifting block 832 on the wheel surface of the ratchet wheel 83 will be in contact with the first notch 822 on the card position piece 82. The other end is offset, and at this time, continuing to rotate the swing arm 71 will drive the locking piece 82 to rotate together. When reaching a certain angle, the outer peripheral edge 821 of the locking piece 82 other than the first notch 822 and the second notch 823 will be against the pawl 84 , so that the ratchet 84 and the one-way tooth 831 are disengaged, continue to gather the swing arm 71 and place the footrest cushion 91 at the rear position of the seat cushion.

In order to make the card bit, ratchet and ratchet fixed, not easy to disengage, the width of the gap between the shaft bottom cover 81 and the shaft outer cover 86 is equivalent to the sum of the thickness of the card bit 82 and the ratchet 83; the shaft bottom cover 81 and the shaft The width of the gap between the outer covers 86 is equivalent to the thickness of the pawl 84 . The pawl 84 has a double-teeth structure, and the distance between the two teeth is equivalent to the distance between the one-way teeth 83. This design makes the engagement between the two more firm and difficult to disengage. The shifting block 832 is formed by the punching hole on the end of the ratchet wheel 83 turned inward. Since the shifting block 832 is formed by punching and flanging inwards, it has extremely high strength compared with the shifting block obtained by welding or the like, is not easy to be damaged, and the cost is relatively low. The swing arm 71 can also be set as a telescopic swing arm. On the one hand, the occupied space is further reduced in the folded state. On the other hand, the user can adjust the length of the swing arm according to his height and the length of the legs. Make it more effective and comfortable to support the legs.

Compared with some supporting tripods on the market, the angle can only be adjusted through buttons or switches. The utility model can realize the change of the angle and the four-speed positioning without operating any buttons, which is simple and convenient, and reduces the operating intensity of the user.

Claims (5)

1. an office chair, comprise base, support bar, pallet, cushion and backrest, support bar lower end is connected with base, post upper connecting trays, pallet is provided with cushion, it is characterized in that: be provided with two swing arms in the front end bilateral symmetry of cushion, the rear end of swing arm and the position of both sides, cushion front end hinged, the front end of swing arm is connected with leg rest cushion, and swing arm is turned over and leg rest cushion is received to cushion rear position place, and swing arm overturns forward has a rest in order to leg rest.

2. a kind of office chair according to claim 1, it is characterized in that: this office chair also comprises installing the bracket of cushion, described bracket comprises the fixed support being arranged on cushion both sides, be connected by fixation steel plate between two fixed supports, described fixation steel plate is fixedly connected with pallet upper end, described swing arm and fixed support front end hinged.

3. according to a kind of office chair according to claim 1, it is characterized in that: described swing arm is telescopic swing arm.

4. a kind of office chair according to claim 1, is characterized in that: described backrest bottom is recessed to form when swing arm is drawn in for laying the space of leg rest cushion backward by certain radian.

5. a kind of office chair according to claim 1, it is characterized in that: described leg rest cushion comprises the first cushion, first cushion and swing arm front end hinged, second cushion one end and the first cushion hinged, the other end and two " U " shape slide blocks be arranged on swing arm two side stand are hinged.