CN113786074B

CN113786074B - Multifunctional adjustable office chair

Info

Publication number: CN113786074B
Application number: CN202111119990.7A
Authority: CN
Inventors: 杜汇
Original assignee: Anji Weiyu Furniture Co Ltd
Current assignee: Anji Weiyu Furniture Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-05-17
Anticipated expiration: 2041-09-24
Also published as: CN113786074A

Abstract

The invention discloses a multifunctional adjustable office chair which comprises foot rests, a support frame, a chair seat and a chair back, wherein the support frame is arranged at the top ends of the foot rests and extends forwards and backwards; the middle part of support frame has the regulation seat, adjusts the seat support member that the seat was equipped with the articulated seat support, the back of the chair support member and the adjustment mechanism of the articulated back of the chair, adjustment mechanism can order about seat support member and back of the chair support member in step for adjusting the seat activity, makes both stretch out the length increase or the reduction of adjusting the seat for the synchronous antiport of seat support and back of the chair. The chair has the advantages that the chair seat and the chair back can be synchronously rotated reversely, and the comfort level of a user is improved.

Description

Multifunctional adjustable office chair

Technical Field

The invention relates to an office chair, in particular to a multifunctional adjustable office chair.

Background

An office chair is a variety of chairs which are convenient for work in daily work and social activities, and the office chair generally refers to a backrest chair on which a person sits when working on a desktop in a sitting posture, and is applied to offices, meeting rooms and the like. Most office chairs with certain functions can be structurally adjusted, and mainly aim at the angle adjustment of the chair seat and the chair back.

For example, prior art publication No. CN213940214U discloses an office chair convenient for angle regulation, including office chair's bedplate, the lower extreme of bedplate is provided with the telescopic link, the lower extreme of telescopic link is provided with the heel brace, the fixed hinge bar that is provided with of one end of bedplate, the bedplate articulates through the hinge bar has the backplate, the upper end of backplate is provided with the neck pillow, be provided with angle adjusting device on the hinge bar. This make things convenient for angle regulation's office chair is provided with the angle adjusting device who makes things convenient for angle regulation, rotating the bull stick when needs angle regulation to conveniently realize the adjustment to the backplate angle. The chair of this patent application can only adjust the angle of pitch-back of backplate, and the bedplate is the solid unable regulation of dying, consequently can't carry out assorted regulation to the bedplate simultaneously according to the regulation of backplate.

For example prior art publication No. CN 110063604A's patent application discloses an office chair that seat support can automatic tilt adjusts again, including the base and articulate in the seat support at base top, the seat support include the seat and install in the back of the chair at seat rear portion, the base includes base, footstock and connection the gas pole of base and footstock, the footstock with be connected with a telescopic cylinder between the seat, telescopic cylinder's one end articulate in the footstock lower part, telescopic cylinder's the other end articulate in the seat rear portion, the seat rear portion is equipped with a control telescopic cylinder motion's drive arrangement, drive arrangement includes pressure sensor and receives the pressure sensor signal and the drive telescopic cylinder motion's driver. The chair back and the seat support of this patent application are syntropy pivoted when adjusting, when the user relaxs adjusts the seat support and the back of the chair backward tilt, because the contained angle size between seat support and the back of the chair can't change, the user's waist can't obtain stretching to make the user's degree of relaxation thoroughly inadequately, the travelling comfort is comparatively general.

Disclosure of Invention

The invention aims to provide a multifunctional adjustable office chair which can synchronously rotate a chair seat and a chair back in a reverse direction, so that the comfort level of a user is improved.

The invention is realized by the following technical scheme.

A multifunctional adjustable office chair comprises foot rests, a support frame, a chair seat and a chair back, wherein the support frame is arranged at the top ends of the foot rests and extends forwards and backwards; the middle part of support frame has the regulation seat, adjusts the seat support member that the seat was equipped with the articulated seat support, the back of the chair support member and the adjustment mechanism of the articulated back of the chair, adjustment mechanism can order about seat support member and back of the chair support member in step for adjusting the seat activity, makes both stretch out the length increase or the reduction of adjusting the seat for the synchronous antiport of seat support and back of the chair.

As a further improvement of the invention, the adjusting seat extends leftwards and rightwards and is of a hollow cylindrical structure; the adjusting mechanism comprises a rotating shaft which extends left and right and is inserted into the adjusting seat, the middle part of the rotating shaft is provided with a section of oblique spline section, and the oblique spline section is sleeved with an adjusting piece which is integrally conical; the chair seat support rod piece and the chair back support rod piece are inserted in the adjusting seat in a radial sliding mode, the inner ends of the chair seat support rod piece and the chair back support rod piece are supported on the adjusting piece, and the outer ends of the chair seat support rod piece and the chair back support rod piece are hinged to the chair seat and the chair back respectively.

As a further improvement of the invention, the axial cross section of the adjusting piece is in a slope shape.

As a further improvement of the invention, the axial section of the adjusting piece is in a step shape.

As a further improvement of the invention, the end surface of the rotating shaft extending out of the adjusting seat is provided with a rib extending along the axial direction; the end part of the rotating shaft is sleeved with a rotary cover, and the inner wall of the rotary cover is provided with an adjusting groove; the axial movement of the screw cap along the rotating shaft can enable the adjusting groove and the rib to be in clamping fit or separated.

As a further improvement of the invention, the middle part of the adjusting seat is radially protruded relative to the left and right side parts thereof, and an annular flange is formed at the joint of the middle part and the side parts of the adjusting seat; the middle part of the adjusting seat is internally provided with a limiting sleeve which is attached to the annular flange and sleeved on the rotating shaft, and the limiting sleeve can abut against the adjusting piece to limit the left-right moving range of the adjusting piece.

As a further improvement of the invention, the middle part of the adjusting seat is provided with a left lug structure and a right lug structure which are spaced at the positions where the seat support rod piece and the chair back support rod piece penetrate into the adjusting seat, a sleeving structure penetrated by the seat support rod piece/the chair back support rod piece is arranged between the two lug structures, and the left side and the right side of the sleeving structure are respectively provided with a shaft which is rotatably connected with the corresponding lug structures.

As a further improvement of the invention, the chair seat support rod piece/chair back support rod piece comprises a support rod and a sleeve sleeved at the outer end of the support rod; the supporting rod penetrates through the sleeving structure, and the inner end of the supporting rod is supported on the adjusting piece; the outer end of the sleeve is hinged on the chair seat/chair back; the sleeve is provided with an elastic piece sleeved on the supporting rod, and two ends of the elastic piece are respectively supported at the outer end of the supporting rod and the inner end of the sleeve.

As a further improvement of the invention, the support frame comprises a base and a support plate which are fixedly connected with the top end of the foot rest; the adjusting seat is arranged on the base; the left side and the right side in the middle of the supporting plate are sleeved on the adjusting seat, and the front end and the rear end of the supporting plate are movably connected with the front end of the seat and the bottom end of the chair back respectively.

As a further improvement of the invention, the left side and the right side of the middle part of the supporting plate are provided with a clasping hoop structure sleeved on the adjusting seat, and are sleeved on the adjusting seat in an interference manner through a fastener.

The invention has the beneficial effects that:

the chair seat support rod piece and the chair back support rod piece are driven to move synchronously by the adjusting mechanism, so that the lengths of the chair seat support rod piece and the chair back support rod piece extending out of the adjusting seat are increased or reduced, the chair seat and the chair back are driven to rotate synchronously and reversely, an included angle between the chair seat and the chair back is increased when a user relaxes, the waist of the user is unfolded, and the inclination degree of the chair seat is suitable for the sitting posture of the user when the user works; the chair seat and the chair back can be synchronously adjusted to rotate in the same direction by the rotation of the supporting plate around the adjusting seat, so that the forward/backward tilting degree of the chair is integrally adjusted, the two adjusting functions can enable a user to flexibly define a working sitting posture and a relaxing sitting posture, and the user experience is improved.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

FIG. 1 is a side schematic view of a multi-function adjustable office chair;

FIG. 2 is an enlarged partial schematic view of FIG. 1;

FIG. 3 is a schematic structural view of the adjustment seat;

FIG. 4 is a schematic structural view of the spindle;

FIG. 5 is a schematic cross-sectional view of an adjustment block;

FIG. 6 is a schematic view of an axial cross section of an adjustment member according to one embodiment;

FIG. 7 is a schematic view of an axial cross section of an adjustment member according to another embodiment;

FIG. 8 is a cross-sectional view of the seat/back support bar.

Detailed Description

The invention is explained in more detail below with reference to the drawings and exemplary embodiments.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Referring to fig. 1-8, a multifunctional adjustable office chair comprises a foot rest 5, a support frame 1, a chair seat 2 and a chair back 3. The foot rest 5 comprises a supporting column 51 in a vertical state and a chassis 52 arranged at the bottom end of the supporting column 51, wherein the supporting column 51 can be arranged into a structure with a telescopic length for adjusting the height of the seat 2, for example, an air rod can be selected; chassis 52 can be set up to five star foot plates, compares other types of chassis, and its stability of supporting is preferred, and the walking wheel of its installation disposes the universal joint, and it is more convenient to remove.

The support frame 1 extends forward and backward as a whole, and the front end is higher than the rear end, and the middle part of the support frame 1 is connected with the top end of the foot rest 5. The middle part of the support frame 1 is provided with an adjusting seat 4 at the position close to the back, and the adjusting seat 4 is provided with a seat support rod piece 41 and a backrest support rod piece 42. The seat support rod 41 is substantially in an upright state, the inner end of the seat support rod is positioned in the adjusting seat 4, the outer end of the seat support rod is hinged at the position of the seat 2 close to the rear end, and the front end of the seat 2 is movably connected with the front end of the support frame 1. The chair back support rod piece 42 is approximately in a horizontal state, the inner end of the chair back support rod piece is positioned in the adjusting seat 4, the outer end of the chair back support rod piece is hinged on the lower part of the chair back 3, and the bottom end of the chair back 3 is movably connected with the rear end of the support frame 1. The chair back 3 is also provided with a backrest 31, the backrest 31 is positioned in front of the chair back 3, the top end of the backrest 31 is fixedly connected with the top end of the chair back 3, the lower part of the front surface of the backrest 31 is an arc-shaped surface which is in accordance with the physiological curve of a human body and is used for better supporting the waist of a user, and a gap is arranged between the bottom end of the backrest 31 and the rear end of the chair seat 2.

The adjusting seat 4 is further provided with an adjusting mechanism which can synchronously drive the seat support rod 41 and the backrest support rod 42 to move relative to the adjusting seat 4, so that the lengths of the seat support rod 41 and the backrest support rod 42 extending out of the adjusting seat 4 are increased or reduced, and the seat 2 and the backrest 3 synchronously rotate reversely.

When a user needs to relax, the length of the seat support rod 41 and the length of the backrest support rod 42 extending out of the adjusting seat 4 can be synchronously increased through the adjusting mechanism, the backrest 3 rotates backwards by taking the bottom end of the backrest as the rotating shaft 43, the back of the user leans against the backrest 3 to recline backwards, the seat 2 rotates upwards by taking the front end of the seat as the rotating shaft 43, the sitting posture of the user is raised, and the chair is more suitable for the sitting posture of the user leaning backwards and with the reclining.

When a user needs to work over a desk, the length of the seat support rod 41 and the length of the backrest support rod 42 extending out of the adjusting seat 4 can be synchronously reduced through the adjusting mechanism, the backrest 3 rotates forwards by taking the bottom end of the backrest as a rotating shaft 43, and the seat 2 rotates downwards by taking the front end of the backrest as the rotating shaft 43. The user can adopt a full sitting position (i.e. substantially occupying the surface of the seat 2), the legs of the user can be better supported by the seat 2 as the surface of the seat 2 is slightly inclined upwards from the rear to the front, and the backrest 31 can be substantially upright, the back of the user resting on the backrest 31 being able to adapt the sitting position of the user to the table work. The user may also adopt a semi-seated position (i.e. the user sits end to the front half of the seat 2) in which he is better suited to work at his desk, based on the tendency of the base to tilt to resist forward sliding movement.

The adjustment base 4 and the adjustment mechanism disposed within the adjustment base 4 will now be described in detail as to how the seat support bar 41 and the back support bar 42 are actuated by the adjustment base 4. The adjusting seat 4 extends left and right and has a hollow cylindrical structure, and the left and right ends of the adjusting seat are communicated. The adjusting mechanism comprises a rotating shaft 43 which extends left and right and is inserted into the adjusting seat 4, the left end and the right end of the rotating shaft 43 partially extend out of the left end and the right end of the adjusting seat 4, a section of oblique spline section 431 is arranged in the middle of the rotating shaft 43, the oblique spline section 431 is sleeved with the adjusting piece 44, and the structural shape of the adjusting piece 44 is conical on the whole. The seat support rod 41 and the back support rod 42 are inserted into the adjusting seat 4 in a radial sliding manner, the inner ends of the seat support rod 41 and the back support rod 42 are supported on the adjusting piece 44, and the outer ends of the seat support rod 41 and the back support rod 42 are respectively hinged with the seat 2 and the back 3, so that the adjusting piece 44 can be driven to move left and right on the oblique spline section 431 by rotating the rotating shaft 43, the axial positions of the inner ends of the seat support rod 41 and the back support rod 42 supported on the adjusting piece 44 are changed, and the length of the seat support rod 41 and the back support rod 42 extending out of the adjusting seat 4 can be synchronously driven to increase/decrease.

In an embodiment, the axial cross section of the adjusting member 44 is in a slope shape, so as to realize stepless adjustment of the backrest 3 and the seat 2, in this embodiment, the acting force applied to the adjusting member 44 by the inner ends of the seat support rod 41 and the backrest support rod 42 generates a component force along the axial direction of the rotating shaft 43, and the axial deviation of the rotating shaft 43 can be avoided by arranging a bearing fixedly sleeved on the rotating shaft 43 in the adjusting seat 4, but the loss of the rotating shaft 43 can be increased, and the service life can be reduced. In another embodiment, the axial section of the adjusting member 44 is stepped, so as to avoid axial deviation caused by axial component force applied to the rotating shaft 43, but in this embodiment, stepless adjustment cannot be realized, and the backrest 3 and the seat 2 are adjusted in multiple steps based on the number of steps of the adjusting member 44.

In order to facilitate the operation of rotating the rotating shaft 43 by a user, the surface of the end of the rotating shaft 43 extending out of the adjusting seat 4 is provided with a plurality of ribs 432 extending along the axial direction and having equal intervals, the end of the rotating shaft 43 is sleeved with the screw cap 45, the inner wall of the screw cap 45 is provided with the adjusting groove 451 matched with the ribs 432, the screw cap 45 is axially moved along the rotating shaft 43, the adjusting groove 451 and the ribs 432 can be in clamping fit or separated, when the adjustment is needed, the screw cap 45 is pushed inwards to enable the adjusting groove 451 and the ribs 432 to be in clamping fit, the rotating shaft 43 can be driven to rotate by rotating the screw cap 45, when the adjustment is not needed, the screw cap 45 is pulled outwards to enable the adjusting groove 451 and the ribs 432 to be separated, and the adjustment of the chair back 3 and the chair seat 2 caused by the wrong rotation of the screw cap 45 is avoided.

Further, the middle part 4-1 of the adjusting seat 4 protrudes radially relative to the left and right side parts 4-2 thereof, an annular flange 4-a is formed at the joint of the middle part 4-1 and the side parts 4-2 of the adjusting seat 4, a limit sleeve 46 which abuts against the annular flange 4-a and is sleeved on the rotating shaft 43 is arranged in the middle part 4-1 of the adjusting seat 4, the inner diameter of the limit sleeve 46 is slightly larger than that of the rotating shaft 43 so as to avoid friction between the two, and the limit sleeve 46 can abut against the adjusting part 44 so as to limit the left-right movement range of the adjusting part 44, so that the separation of the inner ends of the seat support rod 41 and the back support rod 42 from the adjusting part 44 is avoided. The position-limiting sleeve 46 can be adhered to the annular flange 4-a by using adhesive, or a fastener can be arranged on the annular flange 4-a from the outside of the adjusting seat 4 in a penetrating way to fix the position-limiting sleeve 46 on the annular flange 4-a. In addition, the stopper 46 is made of a material having a certain elasticity such as rubber, so as to reduce damage caused by collision of the adjuster 44.

Regarding the structural relationship between the seat support lever 41 and the backrest support lever 42 and the adjustment seat 4, specifically, the middle portion of the adjustment seat 4 is provided with left and right spaced lug structures 47 at the positions where the seat support lever 41 and the backrest support lever 42 penetrate the adjustment seat 4, two sleeve structures 48 corresponding to the seat support lever 41 and the backrest support lever 42 respectively are arranged between the two lug structures 47, the left and right sides of the sleeve structures 48 are respectively provided with a shaft perpendicular thereto, and the shafts are rotatably connected to the corresponding lug structures 47. Two through holes which are communicated from inside to outside are arranged between the two lug structures 47 of the adjusting seat 4, and the seat support rod piece 41 and the backrest support rod piece 42 are inserted into the adjusting seat 4 through the corresponding through holes and respectively penetrate through the corresponding sleeve structures 48. The sleeve structure 48 is correspondingly adapted to pivot upon rotation of the pivot shaft 43 to adjust the extension of the seat support link 41 and back support link 42.

In order to make the user end sit on seat support 2, and back to more comfortable on back 31, further, seat support member 41 back of the chair support member 42 includes bracing piece J, the sleeve K of cover in the bracing piece outer end, the bracing piece passes the suit structure and the inner supports on adjusting part 44, the outer end of sleeve K articulates on seat support 2 back of the chair 3, sleeve K is equipped with the elastic component L of cover on bracing piece J, the both ends of elastic component L support respectively in the outer end of bracing piece J, the inner of sleeve K, the preferred recovery spring of elastic component L. When the user sits on the seat 2, the support rod J of the seat support lever 41 and the sleeve K contract relatively, and the elastic member L in the sleeve K is stretched, so that the elasticity generated when the seat 2 is pressed down plays a role in buffering. When a user leans against the backrest 31, the support rod J of the backrest support rod 42 and the sleeve K are relatively extended, the elastic member L in the sleeve K is compressed, and the backrest 31 is also made to generate elasticity when being pressed backwards, so that the sleeve K of the backrest support rod 42 can be set longer, and the backward pressing amplitude of the backrest 31 is relatively larger from the user experience.

The support frame 1 comprises a base 11 and a support plate 12 which are fixedly connected to the top end of a foot rest 5, an adjusting seat 4 is arranged on the base 11, the left side and the right side of the middle of the support plate 12 are sleeved on the adjusting seat 4, and the front end and the rear end of the support plate 12 are movably connected with the front end of a chair seat 2 and the bottom end of a chair back 3 respectively. The support frame 1 is designed to be of a split structure, so that the difficulty of the production and preparation process can be simplified, and the replacement cost after local damage is lower. Still further, the left and right sides in backup pad 12 middle part has the hoop structure 121 of embracing of cup jointing on adjusting seat 4 to cup joint on adjusting seat 4 through fastener 122 interference, unscrew fastener 122 and can follow the interference and cup joint to become the slip cup joint with hoop structure 121 of embracing tightly, can be so that backup pad 12 can rotate around adjusting seat 4, make seat support 2 and back of the chair 3 can equidirectional rotation in step, thereby adjust the whole of chair forward or back-up. Through the two different adjusting modes, the user can carry out personalized adjustment and can more closely adjust the comfort level of the individual.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multifunctional adjustable office chair is characterized by comprising foot rests, a support frame, a chair seat and a chair back, wherein the support frame is arranged at the top ends of the foot rests and extends forwards and backwards; the middle part of the supporting frame is provided with an adjusting seat, the adjusting seat is provided with a seat support rod piece hinged with the seat, a chair back support rod piece hinged with the chair back and an adjusting mechanism, the adjusting mechanism can synchronously drive the seat support rod piece and the chair back support rod piece to move relative to the adjusting seat, so that the lengths of the seat support rod piece and the chair back support rod piece extending out of the adjusting seat are increased or reduced, and the seat and the chair back synchronously and reversely rotate; the adjusting seat extends left and right and is of a hollow cylindrical structure; the adjusting mechanism comprises a rotating shaft which extends left and right and is inserted into the adjusting seat, the middle part of the rotating shaft is provided with a section of oblique spline section, and the oblique spline section is sleeved with an adjusting piece which is integrally conical; the chair seat support rod piece and the chair back support rod piece are inserted in the adjusting seat in a radial sliding mode, the inner ends of the chair seat support rod piece and the chair back support rod piece are supported on the adjusting piece, and the outer ends of the chair seat support rod piece and the chair back support rod piece are hinged to the chair seat and the chair back respectively.

2. The multifunctional adjustable office chair of claim 1, wherein the axial cross-section of the adjusting member is in the shape of a ramp.

3. The multifunctional adjustable office chair of claim 1, wherein the axial cross-section of the adjusting member is in a stepped shape.

4. The multifunctional adjustable office chair of claim 1, wherein the surface of the end of the shaft extending out of the adjusting seat has axially extending ribs; the end part of the rotating shaft is sleeved with a rotary cover, and the inner wall of the rotary cover is provided with an adjusting groove; the axial movement of the screw cap along the rotating shaft can enable the adjusting groove and the rib to be in clamping fit or separated.

5. The multifunctional adjustable office chair of claim 1, wherein the middle portion of the adjustment seat is radially protruded with respect to both left and right side portions thereof, and an annular flange is formed where the middle portion and the side portions of the adjustment seat are connected; the middle part of the adjusting seat is internally provided with a limiting sleeve which is attached to the annular flange and sleeved on the rotating shaft, and the limiting sleeve can abut against the adjusting piece to limit the left-right moving range of the adjusting piece.

6. The multifunctional adjustable office chair of claim 1, wherein the middle portion of the adjustment seat has left and right spaced lug structures at the locations where the seat support bar and the back support bar penetrate the adjustment seat, a nesting structure is provided between the two lug structures for the seat support bar/back support bar to penetrate, and the nesting structure has shafts rotatably connected to the corresponding lug structures on the left and right sides, respectively.

7. The multifunctional adjustable office chair of claim 6, wherein the seat/back support bar comprises a support bar, a sleeve fitted over an outer end of the support bar; the supporting rod penetrates through the sleeving structure, and the inner end of the supporting rod is supported on the adjusting piece; the outer end of the sleeve is hinged on the chair seat/chair back; the sleeve is provided with an elastic piece sleeved on the supporting rod, and two ends of the elastic piece are respectively supported at the outer end of the supporting rod and the inner end of the sleeve.

8. The multifunctional adjustable office chair of claim 1, wherein the support frame comprises a base fixedly connected to a top end of the foot rest, a support plate; the adjusting seat is arranged on the base; the left side and the right side in the middle of the supporting plate are sleeved on the adjusting seat, and the front end and the rear end of the supporting plate are movably connected with the front end of the seat and the bottom end of the chair back respectively.

9. The multifunctional adjustable office chair according to claim 8, wherein the left and right sides of the middle part of the supporting plate are provided with clasping hoop structures sleeved on the adjusting seat and are sleeved on the adjusting seat in an interference manner through fasteners.