CN109431140B

CN109431140B - Lifting folding office chair

Info

Publication number: CN109431140B
Application number: CN201811594983.0A
Authority: CN
Inventors: 刘波; 任小高
Original assignee: Ningbo Henghou Commodities Co ltd
Current assignee: Ningbo Henghou Commodities Co ltd
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2022-04-08
Anticipated expiration: 2038-12-25
Also published as: CN109431140A

Abstract

The invention belongs to the field of foldable or detachable chairs, and particularly discloses a lifting foldable office chair which comprises a base, a seat plate bracket, a seat cushion and a seat plate, a backrest bracket, a backrest plate and two chair leg supporting rods, wherein the seat plate bracket is arranged on the base; the two chair leg supporting rods are respectively positioned at the two sides of the base; the lower end of each chair leg supporting rod is hinged with the base, and the other end of each chair leg supporting rod is hinged with the seat plate bracket; the lower end of the backrest bracket is hinged with the seat plate bracket; the upper end of the base is provided with a lifting mechanism, and the lifting mechanism is hinged with the backrest bracket; the seat cushion and seat plate is positioned at the upper end of the seat plate bracket and is fixedly connected with the seat plate bracket; the backrest plate is connected with the backrest bracket; the chair leg bracing piece includes first support section and second support section, first support section and second support section slope set up just first support section and second support the angle that the section formed is the obtuse angle. The office chair is simple in structure, convenient to operate, capable of being folded vertically, small in storage space and convenient for people to sit or stand for office.

Description

Lifting folding office chair

Technical Field

The invention relates to the field of foldable or detachable chairs, and particularly discloses a lifting foldable office chair.

Background

The office chair refers to various chairs which are equipped for working conveniently in daily work and social activities. The narrowly defined office chair refers to a backrest chair on which a person sits when working on a desktop in a sitting posture, and the generalized office chair is all chairs used in offices, including office chairs, middle class chairs, guest-meeting chairs, employee chairs, conference chairs, visitor chairs, training chairs and the like.

The traditional office chair has single function and is difficult to adapt to the office demands of people, so that a multifunctional office chair is urgently needed in the market.

Disclosure of Invention

The invention aims to provide a lifting folding office chair which is simple in structure, convenient to operate, capable of being vertically folded, small in storage space, convenient for people to sit or stand for office and capable of meeting the multifunctional requirement of the office chair for people.

Nowadays, more and more people work in front of computers every day, and people work in front of computers for longer and longer time. And the body of the office staff is adversely affected when the office staff sits in front of the computer for a long time. Therefore, people also want to stand up for a while when sitting for a long time or stand up for working during working, which is good for health. Traditional office chair is not collapsible, and the place in general office space is limited, and people stand and official working in front of the computer, then office chair need occupy other spaces, causes the ground obstacle, brings inconvenience for other people. Some foldable office chairs also appear in the market at present, but the existing foldable office chairs all deform the office chair into a bed so as to facilitate people to rest, and the folded office chair still occupies more office space and causes ground obstacle. And people want to lean on a rest for a long time and have no place to rely on. The inventor discovers for the first time that the existing office chair can not meet the problem that people can not only work by sitting but also work by standing, invents the lifting folding office chair through careful research, and solves the problem.

The term "front" in this embodiment refers to the direction an office worker faces when sitting on an office chair.

In the scheme, the shape of the office chair is defined as a shape I when people sit on the office chair, and the shape of the office chair is defined as a shape II when people stand on the office chair.

The lifting folding office chair comprises a base, a seat plate bracket, a seat cushion and a seat plate, a backrest bracket, a backrest plate and two chair leg supporting rods; the two chair leg supporting rods are respectively positioned at the two sides of the base; the chair leg supporting rod comprises a first supporting section and a second supporting section, wherein the first supporting section and the second supporting section are obliquely arranged, and the angle formed by the first supporting section and the second supporting section is not less than 90 degrees; the end part of the first supporting section of each chair leg supporting rod is hinged with the middle part of one side of the base, and the end part of the second supporting section of each chair leg supporting rod is hinged with the seat plate bracket; the lower end of the backrest support is hinged with the rear end of the seat plate support; the rear part of the upper end surface of the base is provided with a lifting mechanism, and the upper end of the lifting mechanism is hinged with the rear end of the backrest support; the seat cushion and seat plate is positioned at the upper end of the seat plate bracket and is fixedly connected with the seat plate bracket; the backrest plate is connected with the front end of the backrest support.

The beneficial effect who adopts this basic scheme lies in: 1. the base provides support for the entire office chair. When the office staff need sit to work, the lifting mechanism is adjusted, so that the height of the lifting mechanism is reduced, the shape of the office chair is the shape I, the angle formed between the seat plate support and the backrest support is about 90 degrees, and the lifting mechanism and the chair leg support rod can provide support for the seat plate support and the backrest support, so that the office staff can sit to work. And the seat cushion and the backrest can provide support for the body of the office worker.

2. In this scheme, when the office staff need stand, start elevating system, elevating system risees, because elevating system upper end is articulated with the back support, and the back support is articulated with the bedplate support, chair leg bracing piece both ends are articulated with base and bedplate support respectively, so when elevating system risees, the back support can be 180 with the angle of bedplate support, make first support section and bedplate support almost parallel, at this moment, the form of office chair is form two, the office chair can be regarded as being vertical structure, make things convenient for the office staff to stand official working and can rely on the back board to have a rest for a short time.

3. All be articulated through bedplate support and back support, chair leg bracing piece and bedplate support and base in this scheme, can highly and then reach the effect that changes the shape of office chair through changing elevating system, provide multiple selection for the official working personnel when official working.

4. In this scheme, when the form of office chair was form two, the angle of back support and bedplate support can be 180, makes first support section and bedplate support almost parallel, compares in ordinary office chair, and the space that occupies is little a lot, can not cause the road surface obstacle.

5. In this scheme, the chair leg bracing piece includes first support section and second support section, and the angle that first support section and second support section formed is not less than 90, then when the form of office chair was the form one, the chair leg bracing piece can cooperate with elevating system and provide powerful support for the bedplate support, and when the form of office chair was the form two, the second support section of chair leg bracing piece can be parallel with bedplate support/back support again, reduces the space that occupies.

Furthermore, two sides of the seat plate bracket are respectively provided with a supporting part; each supporting part comprises a handrail and a handrail supporting rod, one end of the handrail is hinged to the backrest support, the other end of the handrail is hinged to one end of the handrail supporting rod, and the other end of the handrail supporting rod is hinged to the seat plate support. The supporting part is arranged, so that office staff can support the supporting part during office work, the armrest of the supporting part is hinged to the armrest supporting rod, the angle between the armrest supporting rod and the backrest support/seat plate support is changed when the office chair is deformed, and the space occupied by the office chair is reduced.

Furthermore, a soft cushion is arranged at the upper end of the cushion plate. The comfort level of the office staff can be improved when the office chair is used.

Further, the backrest plate is provided with a backrest cushion. The comfort level of the office staff can be improved when the office chair is used.

Furthermore, the lifting mechanism comprises an inner sleeve, an outer sleeve, a threaded screw rod, a threaded part and a power source, the power source is fixed at the upper end of the base and used for driving the threaded screw rod to rotate, the inner sleeve is positioned in the outer sleeve, the inner sleeve and the outer sleeve do not rotate relatively, and the inner sleeve and the outer sleeve are in sliding fit; the threaded part is fixedly connected with the lower part of the inner sleeve, and the threaded screw rod penetrates through the threaded part and is in threaded fit with the threaded part. The power source provides power to drive the threaded screw rod to rotate. The inner sleeve can only slide along the outer sleeve and cannot rotate, and likewise, the threaded part fixedly connected with the inner sleeve cannot rotate. Therefore, when the threaded screw rod rotates, the threaded piece in threaded fit with the threaded screw rod drives the inner sleeve to slide up and down. Namely, the inner sleeve extends out of the outer sleeve or retracts into the inner sleeve, so that the lifting mechanism is lifted, and the deformation effect of the office chair is further achieved. Adopt above-mentioned structure to realize going up and down convenient operation not only, the height of being convenient for control lift, screw lead screw has the effect of auto-lock with the screw member cooperation moreover, can avoid elevating system's altitude variation, provides the support for office chair.

Furthermore, the upper end of the inner wall of the outer sleeve is provided with an inner and outer pipe clearance adjusting sleeve. The inner pipe and outer pipe gap adjusting sleeve can eliminate the potential unstable factors in motion due to the gap between the inner pipe and the outer pipe, the inner pipe and outer pipe gap adjusting sleeve deforms when being extruded, the fit gap between the two pipes is effectively and automatically adjusted, and meanwhile, the outer wall of the inner pipe is driven by the threaded screw rod to play a role in guiding in the stretching process.

And the screw rod stabilizing guide sleeve is rotatably connected with the top end of the threaded screw rod. When the threaded screw rod rotates, the threaded screw rod rotates in the screw rod stable guide sleeve, and the screw rod stable guide sleeve does not rotate along with the screw rod stable guide sleeve, only slides up and down along with the inner cavity wall of the inner sleeve along with the expansion and contraction of the threaded screw rod in the inner cavity of the inner sleeve, so that the stability of the upper head of the threaded screw rod is ensured, and the guide function is realized.

Furthermore, a crosspiece is connected between the two chair leg supporting rods. The supporting strength of the chair leg supporting rod can be improved by arranging the crosspieces.

Drawings

FIG. 1 is a right side view of a first form of the lift-fold office chair of the present invention;

FIG. 2 is a bottom view of the first form of the foldable up-down office chair of the present invention;

FIG. 3 is a perspective view of a second form of the foldable up-down office chair of the present invention;

fig. 4 is a sectional view of the elevating mechanism.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a base 1, a lifting mechanism fixing seat 2, an anti-skidding foot pedal 3, a chair leg support rod connecting seat 4, a chair leg support rod 5, a seat plate support 6, a seat cushion seat plate 7, a soft seat cushion 8, a handrail support rod 9, a handrail fixing seat 10, a handrail 11, a backrest support 12, a backrest plate 13, a backrest cushion 14, a lifting mechanism connecting seat 15, a lifting mechanism fixing shaft 16, a lifting mechanism 17, an inner sleeve square tube 18, a lead screw stabilizing guide sleeve 19, an inner and outer tube gap adjusting sleeve 20, an outer sleeve square tube 21, a threaded lead screw 22, a threaded screw sleeve 23, a lead screw coupling 24, a motor housing 25, a motor fixing frame 26 and a driving motor 27.

Examples

As shown in figures 1 and 2: a lifting folding office chair comprises a base 1, a seat board bracket 6, a seat cushion and a seat board 7, a backrest bracket 12, a backrest board 13, a lifting mechanism 17, a lifting mechanism fixing shaft 16 and two chair leg supporting rods 5. The leg support rod 5 includes a first support section and a second support section, the first support section and the second support section are obliquely arranged, and an angle formed by the first support section and the second support section is an obtuse angle in this embodiment. A crosspiece is connected between the two chair leg supporting rods 5. Two sides of the middle position of the base 1 are respectively welded with a chair leg strut connecting seat 4, and the lower ends of the first connecting sections of the two chair leg strut rods 5 are respectively hinged with the chair leg strut connecting seats 4 through bolts; the rear part of the base 1 is welded with a lifting mechanism fixing seat 2, and the bottom of the lifting mechanism 17 is fixedly connected with the lifting mechanism fixing seat 2 through a bolt. An anti-skid pedal 3 is arranged at the front end of the upper end surface of the base 1.

The upper ends of the second connecting sections of the two chair leg supporting rods 5 are hinged with two side surfaces of the middle part of the seat board bracket 6. The seat board bracket 6 is provided with a wooden seat cushion board 7, and the wooden seat cushion board 7 is sleeved with a soft seat cushion 8. The rear ends of the two sides of the seat board bracket 6 are provided with connecting seats connected with the lower end of the backrest bracket 12, and the connecting seats are hinged with the lower part of the backrest bracket 12 through bolts. A backrest plate 13 is mounted at the front end of the backrest support 12, and the backrest plate 13 is a wood plate in the embodiment. The backrest plate 13 is sleeved with a backrest cushion 14. A lifting mechanism connecting seat 15 is welded in the middle of the rear end face of the backrest support 12, and the lifting mechanism connecting seat 15 is hinged with the upper end of a lifting mechanism 17 through a lifting mechanism fixing shaft 16 to form a linkage body.

Still include two portions of supporting in this scheme, two portions of supporting are located the 7 left and right sides of seatpad seat board respectively. Each supporting part comprises a handrail 11 and a handrail supporting rod 9, the lower part of the front end of each handrail 11 is provided with a handrail fixing seat 10, and the front end of each handrail 11 is hinged with the upper end of each handrail supporting rod 9 through the handrail fixing seat 10 through a bolt. The lower ends of the two handrail supporting rods 9 are respectively hinged with the two side parts of the seat board bracket 6. The rear ends of the two armrests 11 are connected with the left side and the right side of the lower part of the backrest support 12 through bolts to form an interaction mechanism.

As shown in fig. 4, the lifting mechanism 17 includes: the inner sleeve, the outer sleeve, the threaded screw 22, the threaded member, the screw coupling 24, the motor housing 25, the motor holder 26, the power source (in this embodiment, the driving motor 27) and the electric control system and the power source, which are well known in the art and will not be described herein. In this embodiment, the inner sleeve is an inner sleeve square tube 18, the outer sleeve is an outer sleeve square tube 21, and the screw is a threaded screw sleeve 23.

The motor housing 25 is fixedly connected with the lifting mechanism fixing seat 2 behind the base 1 through bolts, the lower end of the outer sleeve square tube 21 is welded with the motor housing 25 into a whole, and the driving motor 27 is fixed in the motor housing 25 through a motor fixing frame 26. The lower end of the inner sleeve square tube 18 extends into the outer sleeve square tube 21 and is in sliding fit with the outer sleeve square tube 21. The upper end of the inner sleeve square tube 18 is connected with a lifting mechanism connecting seat 15 at the middle position of the rear end surface of the backrest bracket 12 through a lifting mechanism fixing shaft 16. The lower end of the inner sleeve square tube 18 is fixedly connected with a threaded screw sleeve 23, a threaded screw rod 22 penetrates through the threaded screw sleeve 23 and is in threaded fit with the threaded screw sleeve 23, and a screw rod stabilizing guide sleeve 19 is arranged at the upper end of the threaded screw rod 22. The lower end of the threaded screw 22 is connected with a driving motor 27 through a screw coupling 24.

As shown in fig. 1, when the office chair is in a shape of one, the height of the lifting mechanism 17 is reduced, the base 1 provides support for the whole office chair, the angle formed between the seat plate support 6 and the backrest support 12 is about 90 degrees, and the lifting mechanism 17 and the leg support rod 5 can provide support for the seat plate support 6 and the backrest support 12, so that an office worker can sit for working. While the seat cushion and

back rest plates

7, 13 may provide support for the office worker's body.

As shown in fig. 3, when a person needs to stand for working, the office chair is in a second form. The power supply is turned on, the driving motor 27 in the lifting mechanism 17 rotates, the driving motor 27 rotates and drives the threaded screw rod 22 to rotate through the screw rod coupler 24, under the action of the threaded screw rod 22, the threaded screw sleeve 23 fixed at the lower end of the inner sleeve square tube 18 generates an upward stroke to drive the inner sleeve square tube 18 to slide out and ascend along the inner wall of the outer sleeve square tube 21, and then the lifting mechanism fixing shaft 16 drives the lifting mechanism connecting seat 15 on the backrest support 12 to move, so that the backrest support 12 simultaneously drives the armrest fixing seat 10, the armrest 11, the armrest supporting rod 9, the chair leg supporting rod 5, the seat plate support 6 and the backrest support 12 to generate rotary ascending displacement through respective connecting points, and vertical folding is realized. When the driving motor rotates reversely, the inner sleeve square tube 18 moves downwards along the outer sleeve square tube 21, the inner sleeve square tube 18 retracts into the outer sleeve square tube 21, and the office chair is changed into the first form shown in fig. 1.

When the threaded screw rod 22 rotates and drives the threaded screw rod 22 to drive the inner sleeve square tube 18 to perform telescopic motion through the threaded screw sleeve 23 fixed at the lower end of the inner sleeve square tube 18, the threaded screw rod 22 only rotates in the screw rod stabilizing guide sleeve 19, the screw rod stabilizing guide sleeve 19 does not rotate along with the threaded screw rod 22 and only slides up and down along with the inner wall of the threaded screw rod 22 in the inner cavity of the inner sleeve square tube 18, the stability of the upper end of the threaded screw rod 22 is guaranteed, and meanwhile, the guiding effect is achieved.

In order to eliminate the potential unstable factors in motion caused by the gap between the inner sleeve square tube 18 and the outer sleeve square tube 21, the upper end of the outer sleeve square tube 21 is also provided with an inner and outer tube gap adjusting sleeve 20, the inner and outer tube gap adjusting sleeve 20 is made of elastic non-metal material (rubber in the embodiment) into a micro wave shape, the micro wave shape deforms when being extruded, the fit gap between the inner sleeve square tube 18 and the outer sleeve square tube 21 is effectively and automatically adjusted, and meanwhile, the outer wall of the inner sleeve square tube 18 is driven by the threaded screw rod 22 to play a guiding role in the stretching process.

For the sake of uniform understanding, "front" in this embodiment still refers to the direction in which the office worker faces when sitting on the office chair, and "rear", "left", and "right" are directions relative to "front".

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The lifting folding office chair comprises a base, a seat plate bracket, a seat cushion and a seat plate, a backrest bracket and a backrest plate, and is characterized by also comprising two chair leg supporting rods; the two chair leg supporting rods are respectively positioned at the two sides of the base; the chair leg supporting rod comprises a first supporting section and a second supporting section, wherein the first supporting section and the second supporting section are obliquely arranged, and the angle formed by the first supporting section and the second supporting section is not less than 90 degrees; the end part of the first supporting section of each chair leg supporting rod is hinged with the middle part of one side of the base, and the end part of the second supporting section of each chair leg supporting rod is hinged with the seat plate bracket; the lower end of the backrest support is hinged with the rear end of the seat plate support; the rear part of the upper end surface of the base is provided with a lifting mechanism, and the upper end of the lifting mechanism is hinged with the rear end of the backrest support; the seat cushion and seat plate is positioned at the upper end of the seat plate bracket and is fixedly connected with the seat plate bracket; the backrest plate is connected with the front end of the backrest support.

2. The folding up-down office chair according to claim 1, wherein: two sides of the seat board bracket are respectively provided with a supporting part; each supporting part comprises a handrail and a handrail supporting rod, one end of the handrail is hinged to the backrest support, the other end of the handrail is hinged to one end of the handrail supporting rod, and the other end of the handrail supporting rod is hinged to the seat plate support.

3. The folding up-down office chair of claim 2, wherein: the upper end of the seat cushion plate is provided with a soft seat cushion.

4. The folding up-down office chair of claim 3, wherein: the backrest plate is provided with a backrest cushion.

5. The folding up-down office chair according to any one of claims 1 to 4, wherein: the lifting mechanism comprises an inner sleeve, an outer sleeve, a threaded screw rod, a threaded part and a power source, the power source is fixed at the upper end of the base and used for driving the threaded screw rod to rotate, the inner sleeve is positioned in the outer sleeve, the inner sleeve and the outer sleeve do not rotate relatively, and the inner sleeve and the outer sleeve are in sliding fit; the threaded part is fixedly connected with the lower part of the inner sleeve, and the threaded screw rod penetrates through the threaded part and is in threaded fit with the threaded part.

6. The folding up-and-down office chair of claim 5, wherein: the upper end of the inner wall of the outer sleeve is provided with an inner and outer pipe clearance adjusting sleeve.

7. The folding up-and-down office chair of claim 5, wherein: the screw rod stabilizing guide sleeve is rotatably connected with the top end of the threaded screw rod.

8. The folding up-down office chair according to any one of claims 1 to 4, wherein: a crosspiece is connected between the two chair leg supporting rods.