CN109008362B

CN109008362B - Office chair

Info

Publication number: CN109008362B
Application number: CN201810979218.4A
Authority: CN
Inventors: 王纪涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-08-27
Filing date: 2018-08-27
Publication date: 2022-02-25
Anticipated expiration: 2038-08-27
Also published as: CN109008362A

Abstract

The invention discloses an office chair, when a gear adjusting mechanism is unlocked, the office chair is in a first gear by adjusting the relative positions of a first armrest, a second armrest, a chair seat and a first curved surface adjusting plate, and the gear adjusting mechanism is locked and can be used as a normal chair; when a rest is needed, the gear adjusting mechanism is unlocked, the office chair is in a second gear by adjusting the relative positions of the first handrail, the second handrail, the chair surface and the first curved surface adjusting plate, and the gear adjusting mechanism is locked and can be in a half-lying state for rest; furthermore, the gear adjusting mechanism is unlocked, the office chair is in a third gear by adjusting the relative positions of the first handrail, the second handrail, the chair seat and the first curved surface adjusting plate, and the gear adjusting mechanism is locked and can be in a full-lying state for rest. By adopting the office chair, the same office chair can be switched into three different states, so that a user can have a proper rest on the premise of saving the occupied space.

Description

Office chair

Technical Field

The invention relates to the technical field of office energy conservation and environmental protection, in particular to an office chair.

Background

At present, the crowd in offices is brainworkers, thinks many, operating pressure is big, and the easy sense is tired, and the limited noon time of noon is mostly stooped on the desk and is slept, saves space when having no way to obtain proper rest, very easily causes the numbness of hands and feet, is unfavorable for physical and mental health. Meanwhile, redundant folding beds cannot be placed due to limited space in an office.

Therefore, how to obtain a proper rest and save space becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of this, the technical problem to be solved by the present invention is how to obtain a proper rest and save space, and therefore, the present invention provides an office chair.

In order to achieve the purpose, the invention provides the following technical scheme:

an office chair comprises a chair surface, a backrest, armrests and chair legs, and further comprises a first curved surface adjusting mechanism, a second curved surface adjusting mechanism and a gear adjusting mechanism;

the backrest comprises a supporting plate, a first curved surface adjusting plate, a second curved surface adjusting plate and a third curved surface adjusting plate, the supporting plate is hinged to the chair surface, one end of the first curved surface adjusting mechanism is hinged to the supporting plate, and the second curved surface adjusting plate is hinged to the other end of the first curved surface adjusting plate;

the first curved surface adjusting mechanism is arranged on the supporting plate and used for pushing an included angle between the first curved surface adjusting plate and the second curved surface adjusting plate;

the third curved surface adjusting plate is arranged at the tail end of the second curved surface adjusting plate through a second curved surface adjusting mechanism, and the angle and the relative height of the third curved surface adjusting plate relative to the second curved surface adjusting plate can be adjusted through the second curved surface adjusting mechanism;

the armrests comprise a first armrest and a second armrest, one end of the first armrest is hinged to the first curved surface adjusting plate, the other end of the first armrest is hinged to one end of the second armrest, the other end of the second armrest is hinged to the seat surface, and the first armrest, the second armrest, the seat surface and the first curved surface adjusting plate form a parallel four-bar linkage mechanism;

the gear adjusting mechanism is arranged on the upper surface of the first armrest, so that the office chair is fixed at a first gear, a second gear and a third gear, wherein in the first gear, the first curved surface adjusting plate is perpendicular to the chair surface, in the second gear, the first curved surface adjusting plate is parallel to the chair surface, and in the second gear, the first curved surface adjusting plate is inclined relative to the chair surface.

Preferably, in the office chair, the first curved surface adjusting mechanism includes a cam, a top plate, a first transmission shaft, a second transmission shaft, a first transmission gear and a second transmission gear, the first transmission shaft and the second transmission shaft are disposed on the support plate, a rotation knob for driving the first transmission shaft to rotate forward and backward is disposed at a tail end of the first transmission shaft, the first transmission gear is disposed on the first transmission shaft, the second transmission gear is disposed on the second transmission shaft, the first transmission gear and the second transmission gear are engaged with each other, the cam is fixed on the second transmission shaft and is engaged with the top plate, and the top plate is engaged with the first curved surface adjusting plate and/or the second curved surface adjusting plate.

Preferably, in the office chair, the first curved surface adjusting mechanism further comprises a clamping plate fixed on the top plate, and the clamping plate is provided with a clamping groove which can be matched with the cam.

Preferably, in the office chair, the clamping groove comprises two inclined surfaces connected at the bottom ends.

Preferably, in the office chair, the gear adjusting mechanism comprises a button assembly exposed on the upper surface of the first armrest, a return spring, a pawl, a ratchet wheel, a hinge shaft and a rotating shaft, wherein the return spring is located between the button assembly and the bottom wall of the first armrest, one end of the button assembly is hinged to one end of the pawl, the middle part of the pawl is hinged to the first armrest through the hinge shaft, the other end of the pawl is matched with the ratchet wheel, the ratchet wheel is fixed on the rotating shaft, the rotating shaft rotates relative to the first armrest, and the rotating shaft is fixed with the second armrest; when the button assembly is pressed down, the other end of the pawl is separated from the ratchet wheel, and when the button assembly is in a natural state, the other end of the pawl clamps the ratchet wheel.

Preferably, in the office chair, the ratchet wheel has at least three latch teeth; the chair legs are in a shape like a Chinese character 'ji'.

Preferably, in the office chair, a guide hole provided on the first armrest is provided, and the first button assembly and the return spring are located in the guide hole.

Preferably, in the office chair, the button assembly includes a button exposing the first armrest, and a guide rod, one end of the guide rod is in contact with the button, the other end of the guide rod is hinged to the pawl, and the return spring abuts against the guide rod and the bottom wall of the first armrest.

Preferably, in the office chair, the second camber adjusting mechanism includes:

the first base is fixed on the second curved surface adjusting plate, and an angle slide rail is arranged on the first base;

the second base is fixed on the third curved surface adjusting plate;

the second base is arranged at the tail end of the swing rod; and

and the locking piece is used for fixing the oscillating bar in the angle sliding rail.

Preferably, in the office chair, an adjusting screw is provided on the swing link for adjusting a distance between the first base and the swing link.

According to the technical scheme, when the office chair is used, when the gear adjusting mechanism is unlocked, the office chair is in the first gear by adjusting the relative positions of the first armrest, the second armrest, the chair seat and the first curved surface adjusting plate, and the gear adjusting mechanism is locked, so that the office chair can be used as a normal chair; when a rest is needed, the gear adjusting mechanism is unlocked, the office chair is in a second gear by adjusting the relative positions of the first handrail, the second handrail, the chair surface and the first curved surface adjusting plate, and the gear adjusting mechanism is locked and can be in a half-lying state for rest; furthermore, the gear adjusting mechanism is unlocked, the office chair is in a third gear by adjusting the relative positions of the first handrail, the second handrail, the chair seat and the first curved surface adjusting plate, and the gear adjusting mechanism is locked and can be in a full-lying state for rest. By adopting the office chair, the same office chair can be switched into three different states, so that a user can have a proper rest on the premise of saving the occupied space.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an office chair located at a first gear according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an office chair located in a second gear according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an office chair located in a third gear according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an office chair in a first gear according to an embodiment of the present invention;

fig. 5 is a schematic front view of a first curved surface adjustment mechanism according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a gear adjustment mechanism provided in an embodiment of the present invention;

FIG. 7 is a schematic side view of a first curved surface adjustment mechanism according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a second curved surface adjustment mechanism according to an embodiment of the present invention;

wherein 100 is a chair seat, 200 is a chair leg, 301 is a button assembly, 302 is a guide hole, 303 is a return spring, 304 is a pawl, 305 is a hinge shaft, 306 is a ratchet wheel, 307 is a rotating shaft, 401 is a first armrest, 402 is a second armrest, 501 is a support plate, 502 is a first curved surface adjustment plate, 503 is a second curved surface adjustment plate, 504 is a third curved surface adjustment plate, 601 is a first curved surface adjustment mechanism, 602 is a second curved surface adjustment mechanism, 700 is a leg plate, 800 is a gear adjustment mechanism, 601-1 is a cam, 601-2 is a top plate, 601-3 is a snap plate, 601-4 is a rotating button, 601-5 is a first transmission shaft, 601-6 is a second transmission shaft, 601-7 is a first transmission gear, 601-8 is a second transmission gear, 602-1 is a first base, 602-2 is a second swing rod, 602-3 is a first swing rod, 602-3 is a second swing rod, 602-4 is a retaining member, and 602-5 is an adjusting screw rod.

Detailed Description

Therefore, the core of the invention is to provide an office chair to obtain proper rest and save space.

The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.

Referring to fig. 1 to 8, an office chair according to an embodiment of the present invention includes a seat 100, a backrest, armrests, legs, a first curved surface adjustment mechanism 601, a second curved surface adjustment mechanism 601, and a gear adjustment mechanism 300;

the backrest comprises a supporting plate 501, a first curved surface adjusting plate 502, a second curved surface adjusting plate 503 and a third curved surface adjusting plate 504, the supporting plate 501 is hinged on the chair surface 100, one end of the first curved surface adjusting mechanism 601 is hinged on the supporting plate 501, and the second curved surface adjusting plate 503 is hinged on the other end of the first curved surface adjusting plate 502;

the first curved surface adjusting mechanism 601 is arranged on the supporting plate 501 and used for pushing an included angle between the first curved surface adjusting plate 502 and the second curved surface adjusting plate 503;

the third curved surface adjusting plate 504 is arranged at the end of the second curved surface adjusting plate 503 through a second curved surface adjusting mechanism 601, and the second curved surface adjusting mechanism 601 can adjust the angle and the relative height of the third curved surface adjusting plate 504 relative to the second curved surface adjusting plate 503;

the armrests comprise a first armrest 401 and a second armrest 402, one end of the first armrest 401 is hinged to the first curved surface adjusting plate 502, the other end of the first armrest 401 is hinged to one end of the second armrest 402, the other end of the second armrest 402 is hinged to the seat surface 100, and the first armrest 401, the second armrest 402, the seat surface 100 and the first curved surface adjusting plate 502 form a parallel four-bar linkage mechanism;

the gear adjusting mechanism 300 is disposed on the upper surface of the first armrest 401, so that the office chair is fixed in a first gear, a second gear and a third gear, wherein in the first gear, the first curved surface adjusting plate 502 is perpendicular to the seat 100, in the second gear, the first curved surface adjusting plate 502 is parallel to the seat 100, and in the second gear, the first curved surface adjusting plate 502 is inclined with respect to the seat 100.

When the office chair is used, when the gear adjusting mechanism 300 is unlocked, the office chair is in the first gear by adjusting the relative positions of the first armrest 401, the second armrest 402, the chair seat 100 and the first curved surface adjusting plate 502, and the gear adjusting mechanism 300 is locked, so that the office chair can be used as a normal chair; when a rest is needed, the gear adjusting mechanism 300 is unlocked, the office chair is in the second gear by adjusting the relative positions of the first armrest 401, the second armrest 402, the seat 100 and the first curved surface adjusting plate 502, the gear adjusting mechanism 300 is locked, and the rest can be in a half-lying state; further, the gear adjustment mechanism 300 is unlocked, the office chair is in the third gear by adjusting the relative positions of the first armrest 401, the second armrest 402, the seat 100 and the first curved adjustment plate 502, and the gear adjustment mechanism 300 is locked, so that the office chair can rest in the full-lying state. By adopting the office chair, the same office chair can be switched into three different states, so that a user can have a proper rest on the premise of saving the occupied space.

In one embodiment of the present invention, the gear position adjusting mechanism 300 comprises a button assembly 301 exposed on the upper surface of the first armrest 401, a return spring 303, a pawl 304, a ratchet 306, a hinge shaft 305 and a rotating shaft 307, wherein the return spring 303 is located between the button assembly 301 and the bottom wall of the first armrest 401, one end of the button assembly 301 is hinged to one end of the pawl 304, the middle part of the pawl 304 is hinged to the first armrest 401 through the hinge shaft 305, the other end of the pawl 304 is engaged with the ratchet 306, the ratchet 306 is fixed on the rotating shaft 307, the rotating shaft 307 rotates relative to the first armrest 401, and the rotating shaft 307 is fixed with the second armrest 402; when the button assembly 301 is pressed, the other end of the pawl 304 is disengaged from the ratchet 306, and when the button assembly 301 is in a natural state, the other end of the pawl 304 catches the ratchet 306.

When the button assembly 301 is pressed, the button assembly 301 presses one end of the pawl 304, and since the middle portion of the pawl 304 is hinged to the first armrest 401 through the hinge shaft 305, the other end of the pawl 304 is lifted up, so that the pawl 304 is disengaged from the ratchet 306 for unlocking. Because the first armrest 401, the second armrest 402, the seat surface 100 and the first curved surface adjustment plate 502 are four-bar linkages, after an external force is applied, the relative position relationship among the components of the office chair can be adjusted, when the first gear is needed, the office chair is adjusted to be in the first gear, the button assembly 301 is loosened, the button assembly 301 is lifted up under the action of the return spring 303, meanwhile, one end of the pawl 304 close to the button assembly 301 is lifted up, one end of the pawl 304 close to the ratchet 306 falls down and is clamped on the ratchet 306, and at the moment, the first armrest 401 and the second armrest 402 are relatively fixed, so that the locking purpose is achieved.

In a similar way, the office chair can realize the switching among the first gear, the second gear and the third gear.

In the embodiment of the present invention, the button assembly 301 is disposed on the upper surface of the armrest for convenience of operation, but may be disposed under the seat 100.

The ratchet 306 has at least three latch teeth; the chair legs are in a shape like a Chinese character 'ji' or universal wheels are arranged on the chair legs.

In order to make the above-described shift position adjusting mechanism 300 more stable when pressed, a guide hole 302 is provided on the first armrest 401, and the first button assembly 301 and the return spring 303 are located in the guide hole 302.

The button assembly 301 is a whole or composed of several parts, the button assembly 301 includes a button exposing the first armrest 401 and a guide rod, one end of the guide rod contacts with the button, the other end of the guide rod is hinged with the pawl 304, and the return spring 303 abuts against the guide rod and the bottom wall of the first armrest 401.

In the embodiment of the present invention, the first curved surface adjusting mechanism 601 includes a cam 601-1, a top plate 601-2, a first transmission shaft 601-5, a second transmission shaft 601-6, a first transmission gear 601-7 and a second transmission gear 601-8, the first transmission shaft 601-5 and the second transmission shaft 601-6 are disposed on the supporting plate 501, a rotation button 601-4 for driving the first transmission shaft 601-5 to rotate forward and backward is disposed at a distal end of the first transmission shaft 601-5, the first transmission gear 601-7 is disposed on the first transmission shaft 601-5, the second transmission gear 601-8 is disposed on the second transmission shaft 601-6, and the first transmission gear 601-7 and the second transmission gear 601-8 are engaged with each other, the cam 601-1 is fixed on the second transmission shaft 601-6 and is matched with the top plate 601-2, and the top plate 601-2 is matched with the first curved surface adjusting plate 502 and/or the second curved surface adjusting plate 503.

When the first transmission gear 601-5 is rotated by rotating the rotating knob 601-4 to adjust the angle between the first curved surface adjusting plate 502 and the second curved surface adjusting plate 503, the first transmission gear 601-7 on the first transmission gear 601-5 is rotated by the rotating knob 601-4, and the second transmission gear 601-8 is electrically rotated by the second transmission gear 601-8 due to the engagement of the first transmission gear 601-7 and the second transmission gear 601-8, so that the cam 601-1 fixed on the second transmission gear 601-6 is rotated, and the distance between the peripheral surface of the cam 601-1 and the rotation center of the cam 601-1 is the farthest when the highest point is in contact with the top plate 601-2 due to the different distances between the peripheral surface of the cam 601-1 and the rotation center of the cam 601-1, the included angle between the two is minimum; when the lowest point of the cam 601-1 is in contact with the top plate 601-2, the first camber adjusting plate 502 and the second camber adjusting plate 503 are closest to the rotation center of the cam 601-1, and the included angle between the two is the largest. Therefore, the included angle between the first curved surface adjusting plate 502 and the second curved surface adjusting plate 503 can be adjusted by rotating the rotating button 601-4, and then the curved surface of the chair seat 100 can be adjusted, so that the office chair can be more fit with the curved surface of a human body, and the comfort level is improved.

Further, in order to enable the cam 601-1 to be fixed at a certain position relatively stably, the first camber adjusting mechanism 601 further includes a catch plate 601-3 fixed on the top plate 601-2, and the catch plate 601-3 is provided with a catch groove capable of cooperating with the cam 601-1. It should be noted that, as long as the cam 601-1 can be clamped at a certain position, in the embodiment of the present invention, preferably, the clamping groove includes two inclined surfaces connected at the bottom end.

In order to prevent the first curved surface adjustment plate 502 and the second curved surface adjustment plate 503 from changing after the angle is adjusted, it is preferable that the first transmission gear 601-7 and the second transmission gear 601-8 in the embodiment of the present invention use a worm gear mechanism.

To further improve the comfort of the user, the second camber adjustment mechanism 601 includes:

a first base 602-1 fixed on the second curved surface adjusting plate 503, wherein an angle slide rail is arranged on the first base 602-1;

a second base 602-2 fixed to the third camber adjustment plate 504;

the swing rod 602-3 is arranged in the angle slide rail, and the second base 602-2 is arranged at the tail end of the swing rod 602-3; and

and the locking piece 602-4 is used for fixing the swing rod 602-3 in the angle sliding rail.

When the angle of the third curved surface adjusting plate 504 relative to the second curved surface adjusting plate 503 needs to be adjusted, the locking member 602-4 is released so that the swing rod 602-3 can swing in the angle sliding rail, and after the angle is adjusted, the swing rod 602-3 is fixed in the angle sliding rail through the locking member 602-4.

Further, an adjusting screw 602-5 is disposed on the swing link 602-3 for adjusting a distance between the first base 602-1 and the swing link 602-3. The height between the second base 602-2 and the first base 602-1 can be adjusted by rotating the adjusting screw 602-5, and it can be understood that the surface of the third curved surface adjusting plate 504 directly contacting with the user is higher than the surface of the second curved surface adjusting plate 503 directly contacting with the user, which can be adjusted reasonably for different users.

In order to optimize the above technical solution, in another embodiment of the present invention, a leg plate 700 is further provided, the leg plate 700 is disposed on one side of the seat surface 100 near the edge, and when the office chair is in the second gear, the leg plate 700 is unfolded, and the leg plate 700 can be fixed relative to the seat surface 100. There are various structures that can fix and unlock the leg board 700, and embodiments of the present invention will not be described in detail

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An office chair comprises a chair surface, a backrest, armrests and chair legs, and is characterized by further comprising a first curved surface adjusting mechanism, a second curved surface adjusting mechanism and a gear adjusting mechanism;

the backrest comprises a supporting plate, a first curved surface adjusting plate, a second curved surface adjusting plate and a third curved surface adjusting plate, the supporting plate is hinged to the chair surface, one end of the first curved surface adjusting mechanism is hinged to the supporting plate, and the second curved surface adjusting plate is hinged to the other end of the first curved surface adjusting plate; the first curved surface adjusting mechanism is arranged on the supporting plate and used for pushing an included angle between the first curved surface adjusting plate and the second curved surface adjusting plate to be attached to the curved surface of a human body; the third curved surface adjusting plate is arranged at the tail end of the second curved surface adjusting plate through a second curved surface adjusting mechanism, and the angle and the relative height of the third curved surface adjusting plate relative to the second curved surface adjusting plate can be adjusted through the second curved surface adjusting mechanism; the first curved surface adjusting mechanism comprises a cam, a top plate, a first transmission shaft, a second transmission shaft, a first transmission gear and a second transmission gear, the first transmission shaft and the second transmission shaft are arranged on the supporting plate, a rotating button for driving the first transmission shaft to rotate forwards and reversely is arranged at the tail end of the first transmission shaft, the first transmission gear is arranged on the first transmission shaft, the second transmission gear is arranged on the second transmission shaft, the first transmission gear and the second transmission gear are meshed with each other, the cam is fixed on the second transmission shaft and matched with the top plate, and the top plate is matched with the first curved surface adjusting plate and/or the second curved surface adjusting plate; the second curved surface adjustment mechanism includes: the first base is fixed on the second curved surface adjusting plate, and an angle slide rail is arranged on the first base; the second base is fixed on the third curved surface adjusting plate; the second base is arranged at the tail end of the swing rod; the locking piece is used for fixing the swing rod in the angle sliding rail;

the gear adjusting mechanism is arranged on the upper surface of the first armrest, so that the office chair is fixed at a first gear, a second gear and a third gear, wherein in the first gear, the first curved surface adjusting plate is vertical to the chair surface, in the second gear, the first curved surface adjusting plate is flat with the chair surface, and in the second gear, the first curved surface adjusting plate is inclined relative to the chair surface; the gear adjusting mechanism comprises a button assembly exposed on the upper surface of the first armrest, a return spring, a pawl, a ratchet wheel, a hinge shaft and a rotating shaft, wherein the return spring is positioned between the button assembly and the bottom wall of the first armrest, one end of the button assembly is hinged to one end of the pawl, the middle part of the pawl is hinged to the first armrest through the hinge shaft, the other end of the pawl is matched with the ratchet wheel, the ratchet wheel is fixed on the rotating shaft, the rotating shaft rotates relative to the first armrest, and the rotating shaft is fixed with the second armrest; when the button assembly is pressed down, the other end of the pawl is separated from the ratchet wheel, and when the button assembly is in a natural state, the other end of the pawl clamps the ratchet wheel.

2. The office chair of claim 1, wherein said first camber adjustment mechanism further comprises a catch plate secured to said top plate, said catch plate being provided with a catch slot that is capable of engaging said cam.

3. An office chair as claimed in claim 2, wherein the slot comprises two inclined surfaces connected at their bottom ends.

4. The office chair of claim 1, wherein the ratchet has at least three teeth; the chair legs are in a shape like a Chinese character 'ji'.

5. The office chair of claim 4, wherein a guide aperture is provided in the first armrest, and wherein the first button assembly and the return spring are positioned in the guide aperture.

6. The office chair of claim 5, wherein the first button assembly includes a button exposing a first armrest and a guide rod, one end of the guide rod is in contact with the button, the other end of the guide rod is hinged to the pawl, and the return spring abuts the guide rod and a bottom wall of the first armrest.

7. The office chair of claim 1, wherein an adjustment screw is provided on the swing link for adjusting the distance between the first base and the swing link.