Electrically operated multi-functional chair

Abstract

An electrically operated multi-functional chair comprises a rotatable chair base, a seat, a backrest, and a leg rest. The rotatable chair base is connected to the underside of the seat; the rotatable chair base allows the seat to rotate. The seat has a drive device installed thereunder; the seat and the leg rest are connected through a linkage bar set, wherein the drive device can drive the linkage bar set to fold out the leg rest from below the seat. The backrest is disposed in one side of the seat; the backrest is pivoted to a sliding plate; the sliding plate is connected to the drive device. The drive device is controlled by a controller; the leg rest is pushed by the linkage bar set, which is driven by the drive device, and folded out from below the seat. At the same time, the drive device synchronously drives the sliding plate to move, making the backrest to recline synchronously and to create an effect of reclining / lying.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an office chair, more specifically to an electrically operated multi-functional chair.DESCRIPTION OF PRIOR ART

[0002] Office chairs are the types of chairs that are provided for the convenience of daily work in workplaces or social activities. Nowadays, office chairs need to meet the usual functions required by users during work hours. Due to the limited office space, most of staff put their arms and heads on the tables while taking a nap at lunch break or needing a rest. However, such postures will affect digestion and cause poor circulation in body parts, including buttocks and legs, resulting in numbness in the feet.

[0003] Although some manufacturers produce manually operated dual-functional office chairs for sitting and reclining positions, there are still shortcomings as follows.

[0004] 1. Manually operated dual-functional office chairs for sitting and reclining require users to manage relatively complicated operations, such as pulling the leg rest out or adjusting the recline angle of the backrest.

[0005] 2. Accordingly, since the leg rest and the backrest are operated separately, the office chair can become out of balance and flip over during adjustment.

[0006] 3. These office chairs only have two settings for sitting and reclining and no other functions.SUMMARY

[0007] The main objective of the present disclosure is to provide an electrically operated multi-functional chair that uses an electric control device to drive the linkage mechanism installed on the underside of the seat to move the seat, leg rest, and backrest synchronously, in order to achieve the result of synchronously adjusting a chair setting of sitting or relining.

[0008] To achieve the aforementioned objective, the structure of the present disclosure comprises a rotatable chair base, a seat, a backrest, and a leg rest that can be folded out from below the seat, wherein

[0009] the rotatable chair base is connected to the underside of the seat and the rotatable chair base allows the seat to rotate;

[0010] the seat is a part on which the user can sit;

[0011] the seat has a drive device installed thereunder;

[0012] the seat and the leg rest are connected through a linkage bar set, wherein the drive device can drive the linkage bar set to fold the leg rest out from below the seat; and

[0013] the backrest is disposed in one side of the seat; the backrest is pivoted to a sliding plate; the sliding plate is connected to the drive device.

[0014] Accordingly, the leg rest, driven by the drive device, is folded out from below the seat, wherein the drive device is controlled by a controller. At the same time, the drive device synchronously drives the sliding plate to move, making the backrest to recline synchronously and to create an effect of reclining / lying.

[0015] According to the descriptions above, features and functions of the present disclosure are provided as follows.

[0016] 1. The structure of the present disclosure can adjust the recline angle of the backrest while folding out the leg rest synchronously, so that the user can quickly adjust the backrest-to-seat angle while resting.

[0017] 2. The structure of the present disclosure can synchronously adjust the recline angle and the leg rest angle of the backrest and the leg rest respectively. The aforementioned operation can prevent the chair from out of balance and flipping over during the adjustment process.BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present disclosure will become more fully understood from the detailed description given herein below for illustration only which thus does not limit the present disclosure.

[0019] FIG. 1 is a structural diagram of the present disclosure.

[0020] FIG. 2 is an operational schematic diagram (1) of folding out the leg rest of the present disclosure.

[0021] FIG. 3 is an operational schematic diagram (2) of folding out the leg rest of the present disclosure.

[0022] FIG. 4 is a structural diagram of an embodiment of the present disclosure.

[0023] FIG. 5 is a side view of FIG. 4.

[0024] FIG. 6 is a schematic diagram of adjusting the headrest of the present disclosure.

[0025] FIG. 7 is an operational schematic diagram (1) of adjusting the armrest of the present disclosure.

[0026] FIG. 8 is an operational schematic diagram (2) of adjusting the armrest of the present disclosure.

[0027] FIG. 9 is a flow chart block diagram of the controller of the present disclosure.DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0028] As illustrated in FIG. 1, the electrically operated multi-functional chair of the present disclosure comprises a rotatable chair base 1, a seat 2, a backrest 3, and a leg rest 4 that can be folded out from below the seat 2.

[0029] The rotatable chair base 1 is connected to the underside of the seat 2 and the rotatable chair base 1 allows the seat 2 to rotate. In addition, the rotatable chair base 1 is equipped with casters 11, so that the chair of the present disclosure can move around easily through the casters 11.

[0030] The seat 2 has a drive device 5 installed in the center of the underside thereof; the drive device 5 used in the present disclosure can be an electric cylinder, an electric push bar, or a linear drive equipment.

[0031] The seat 2 and the leg rest 4 are connected through a linkage bar set 6, wherein the drive device 5 can drive the linkage bar set 6 to fold the leg rest 4 out from below the seat 2. The aforementioned methods of folding out the leg rest 4 are illustrated in FIG. 2 and FIG. 3. The linkage bar set 6 comprises a first connecting bar 61 and a second connecting bar 62, both configured in a V shape. A first end 611 of the first connecting bar 61 is connected to the seat 2 toward the backend thereof; a second end 612 of the first connecting bar 61 is connected to the leg rest 4 near the backend thereof. A first end 621 of the second connecting bar 62 is connected to the seat 2 at a location toward the frontend thereof; a second end 622 of the second connecting bar 62 is connected to the leg rest 4 near the frontend thereof. Furthermore, a fulcrum 63 is disposed on and between the first connecting bar 61 and the second connecting bar 62. A third connecting bar 64 is disposed on the lower area of the first end 621 of the second connecting bar 62. An extension bar 51 of the drive device 5 is connected to the third connecting bar 64. As illustrated in FIG. 2 and FIG. 3, the drive device 5 is controlled by a controller 7 to drive the extension bar 51 extending forward, which can move the third connecting bar 64 and force the first connecting bar 61 and the second connecting bar 62 to move forward and fold out the leg rest 4 from below the seat 2.

[0032] The backrest 3 is disposed in one side of the seat 2; the lower end of the backrest 3 is pivoted to a sliding plate 31; the sliding plate 31 is connected to the drive device 5. Furthermore, the backrest 3 is pivoted to the seat 2 through a first pivot end 32; the backrest 3 is pivoted to a sliding plate 31 through a second pivot end 33. One end of the sliding plate 31, opposite to the second pivot end 33, is 20) connected to the first end 611 of the first connecting bar 61. As illustrated in FIG. 2 and FIG. 3, when the drive device 5 drives the leg rest 4 to fold out, the aforementioned sliding plate 31 is driven by the first connecting bar 61, forcing the backrest 3 to gradually leaning downward to a flat position.

[0033] The illustrations disclosed in FIG. 1 to FIG. 3, it is clearly that the structure of the present disclosure not only can adjust the leg rest 4 by folding out under a retractable adjustment but also can adjust the recline angle of the backrest 3, so that users can make adjustments for sitting or reclining postures safely while being on the chair of the present disclosure, and achieve the most comfortable setting.

[0034] Please refer to FIG. 4 and FIG. 5. In one embodiment of the present disclosure, the seat 2 is a soft foam seat pad 21 having a layer of fleece fabric thereon that increases a more comfortable feeling to users while sitting in the chair.

[0035] In one embodiment of the present disclosure, the backrest 3 can further comprises a backrest cushion 34 made of mesh fabric that supports the user's back and, at the same time, has the advantage of breathability, not being stuffy, and good air circulation.

[0036] In one embodiment of the present disclosure, the backrest cushion 34 is equipped with a massage device 35. The massage device 35 can massage the waist and back of the user while the user sits or lies in the chair; the feature increases the quality of the chair of the present disclosure.

[0037] As illustrated in FIG. 6, a headrest 36 is disposed on the backrest cushion 34 to support the user's head. Meanwhile, the headrest 36 further comprises a L-shape handle 361 for adjusting the headrest 36. The backrest cushion 34 comprises an adjustment slot 341 to adjust the height of the L-shape handle 361 with respect to the adjustment slot 341, which is a function for adjusting the height of the headrest 36. In addition, the headrest 36 has a rotating end 362, so that the headrest 36 can rotate while pivoting around the rotating end 362 in order to adjust the angle of the headrest 36.

[0038] As illustrated in FIG. 7, both sides of the seat 2 are disposed with an armrest 8 separately. The armrest 8 comprises an armrest height-adjustable unit 81, an armrest angle-adjustable unit 82, and an armrest pad 83. The armrest height-adjustable unit 81 can adjust the height of the armrest 8; the armrest angle-adjustable unit 82, disposed between the armrest height-adjustable unit 81 and the armrest pad 83, can adjust the tilt angle of the of the armrest pad 83. Please refer to FIG. 8. The armrest pad 83 can also be adjusted in the horizontal direction through the armrest angle-adjustable unit 82; therefore, the user can rest their arms or hands on the armrests in a proper and comfortable way either in a sitting or reclining position.

[0039] In summary, the advantages of the present disclosure are as follows.

[0040] 1. The structure of the present disclosure can adjust the recline angle of the backrest 3 while folding out the leg rest 4 synchronously, so that the user can quickly adjust the backrest-to-seat angle while resting.

[0041] 2. The structure of the present disclosure can synchronously adjust the recline angle and the leg rest angle of the backrest 3 and the leg rest 4 respectively. The aforementioned operation can prevent the chair from out of balance and flipping over during the adjustment process.

[0042] 3. The seat with a soft foam seat pad 21 can further increase a more comfortable feeling to users while sitting in the chair of the present disclosure.

[0043] 4. The backrest cushion 34 made of mesh fabric that supports the user's back and, at the same time, has the advantage of breathability, not being stuffy, and good air circulation

[0044] 5. A headrest 36 is disposed on the backrest cushion 34 to support the user's head.

[0045] 6. The armrest 8 is adjustable in height and angle, offering the user a more comfortable setting.

[0046] 7. The controller 7 can control the angles of the backrest 3 and the leg rest 4 through wire. As illustrated in FIG. 9, the controller 7 can have a wireless control module 71, so that the user can control the angles of the backrest 3 and the leg rest 4, as well as the actuation of the massage device 35, the height or angle of the headrest 36, or the height, tilt angle, or angle in the horizontal direction of the armrest 8, remotely through a mobile phone or a controller.

[0047] 8. According to the illustrations of FIG. 2, FIG. 3, and FIG. 5 to FIG. 7, two buttons on both side of the control panel of the controller 7 control the angles of the backrest 3 and the leg rest 4 through the drive device 5; the upper button at the center of the control panel is for turning on and off the massage device 35; the oval hole located in the lower area at the center of the control panel is a cable port for, for example, USB or TYPE-C. Therefore, the structure of the present disclosure is convenient to control and operate.

[0048] In summary, after searching domestic and foreign publications related to the technology of this type of structure of the present disclosure, it is concluded that no identical or similar structures exist in the patents approved prior to the submission of the application of the present disclosure. Thus, the present disclosure meets the key requirements of “novelty”, “progress (non-obviousness)” and “applicable to industrial use” for patentability and, therefore, hereby the application is submitted.

[0049] The above preferred embodiments are presented to disclose the novel features, technical principles, and advantages of the present disclosure. Those skilled in the art shall understand that the aforementioned descriptions are for illustration only and shall not be interpreted to limit the scope, applicability or configuration, of the present disclosure in any way. Any alternative embodiments that are modified or changed without departing from the spirit and scope of the present disclosure shall be included in the appended claims.

Claims

1. An electrically operated multi-functional chair, comprising a rotatable chair base, a seat, a backrest, and a leg rest that can be folded out from below the seat, whereinthe rotatable chair base is connected to the underside of the seat and the rotatable chair base allows the seat to rotate;the seat is a part on which the user can sit;the seat has a drive device installed thereunder;the seat and the leg rest are connected through a linkage bar set, wherein the drive device can drive the linkage bar set to fold the leg rest out from below the seat;the backrest is disposed in one side of the seat; the backrest is pivoted to a sliding plate; the sliding plate is connected to the drive device; andaccordingly, the leg rest, moved by the linkage bar set which is driven by the drive device, is folded out from below the seat, wherein the drive device is controlled by a controller; the drive device synchronously drives the sliding plate to move, making the backrest to recline synchronously and to create an effect of reclining / lying.

2. The electrically operated multi-functional chair as claimed in claim 1, wherein the drive device can be an electric cylinder, an electric push bar, or a linear drive equipment.

3. The electrically operated multi-functional chair as claimed in claim 1, wherein the linkage bar set comprises a first connecting bar and a second connecting bar, both configured in a V shape; a first end of the first connecting bar is connected to the seat toward the backend thereof; a second end of the first connecting bar is connected to the leg rest near the backend thereof; a first end of the second connecting bar is connected to the seat at a location toward the frontend thereof; a second end of the second connecting bar is connected to the leg rest near the frontend thereof; a fulcrum is disposed on and between the first connecting bar and the second connecting bar; a third connecting bar is disposed on the lower area of the first end of the second connecting bar; an extension bar of the drive device is connected to the third connecting bar; the drive device is controlled by a controller to drive the extension bar extending forward, which can move the third connecting bar and force the first connecting bar and the second connecting bar to move forward and fold out the leg rest from below the seat.

4. The electrically operated multi-functional chair as claimed in claim 3, wherein the backrest is pivoted to the seat through a first pivot end; the backrest is pivoted to a sliding plate through a second pivot end; one end of the sliding plate, opposite to the second pivot end, is connected to the first end of the first connecting bar of the linkage bar set; when the drive device drives the leg rest to fold out, the sliding plate is driven by the first connecting bar, forcing the backrest to gradually leaning downward to a flat position.

5. The electrically operated multi-functional chair as claimed in claim 1, wherein the seat is a soft foam seat pad having a layer of fleece fabric thereon.

6. The electrically operated multi-functional chair as claimed in claim 1, wherein the backrest further comprises a backrest cushion made of mesh fabric.

7. The electrically operated multi-functional chair as claimed in claim 6, wherein the backrest cushion is equipped with a massage device.

8. The electrically operated multi-functional chair as claimed in claim 7, wherein a headrest is disposed on the backrest cushion; the headrest further comprises a L-shape handle for adjusting the headrest; the backrest cushion comprises an adjustment slot to adjust the height of the L-shape handle with respect to the adjustment slot, which is a function for adjusting the height of the headrest; the headrest has a rotating end, so that the headrest can rotate while pivoting around the rotating end in order to adjust the angle of the headrest.

9. The electrically operated multi-functional chair as claimed in claim 1, wherein both sides of the seat are disposed with an armrest separately; the armrest comprises an armrest height-adjustable unit, an armrest angle-adjustable unit, and an armrest pad; the armrest height-adjustable unit can adjust the height of the armrest; the armrest angle-adjustable unit, disposed between the armrest height-adjustable unit and the armrest pad, can adjust the angle in the horizontal direction and the tilt angle of the armrest pad.

10. The electrically operated multi-functional chair as claimed in claim 1, wherein the controller can further have a wireless control module, so that the user can adjust the reclining angle of the backrest and the tilt angle of the leg rest remotely by controlling the drive device through the wireless control module.

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