CN110811195A

CN110811195A - Adjustable office chair

Info

Publication number: CN110811195A
Application number: CN201911143230.2A
Authority: CN
Inventors: 辛艺; 赵吉强; 苟华刚
Original assignee: Chongqing Yanfeng Adient Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-02-21

Abstract

The invention discloses an adjustable office chair, comprising: a seat supporting member rotatably mounted on the bracket; a driving assembly arranged at the lower side of the seat supporting component and used for driving the seat supporting component to rotate around the bracket; a backrest support member rotatably mounted at a rear end of the seat support member, with an elastic holding member being provided between the backrest support member and the seat support member to apply a force to the backrest support member rotating in a direction approaching the bracket; the handrail is rotatably arranged at the upper end of the bracket; a sliding member slidably mounted on the armrest, a rear end of the sliding member being rotatably connected to the back support member; and a locking member provided between the armrest and the slide member to restrict the slide member from sliding. The invention has the beneficial effects that: the adjusting mechanism has the advantages of reasonable structural design, convenient operation, reliable stress support, difficult damage of parts and long service life of the seat.

Description

Adjustable office chair

Technical Field

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

Background

The office chair is office furniture, and for office workers, most of the working days are occupied by the office chair, and the office chair with reasonable structural design and good comfort has positive significance for relieving fatigue of long-time sitting.

In the product design of the existing office chair, the practicability and the beauty are usually contradictory, the comfort and the health are contradictory, and sometimes wrong sitting postures can relax muscles but can cause the burden of the spine.

For this reason, some comfortable seats are also available on the market, which can adjust the sitting posture of the user by adjusting the inclination angle of the seat and the inclination angle of the backrest alone, but these adjusting structures are generally not reasonable in design, such as: the backrest rotation mechanism comprises a backrest, a backrest rotation mechanism, an angle adjusting mechanism and a locking mechanism, wherein the backrest rotation mechanism is used for adjusting the inclination angle of a backrest, the unlocking position of the angle adjusting mechanism is generally arranged at the lower side of a seat cushion, a user needs to stretch a hand downwards to unlock the angle adjusting mechanism, the angle adjusting mechanism is inconvenient to operate, the locking mechanism is directly arranged at the backrest rotation position, a resistance arm of the backrest is short, the locking mechanism needs to bear a large load, and damage; meanwhile, for the adjusting mechanisms for adjusting the integral inclination angle of the seat, the technical problems of inconvenient adjustment, easy damage, poor reliability and the like exist at the same time, so that the service life of the seat is generally short.

Disclosure of Invention

In view of the above, the invention provides an adjustable office chair, which has a reasonable structural design of an adjusting mechanism, is convenient to operate, is reliable in stressed support, is not easy to damage parts, and has a long service life.

In order to achieve the purpose, the technical scheme of the invention is as follows:

an adjustable office chair, which is characterized in that the adjustable office chair comprises:

a support;

a seat supporting member rotatably mounted on the bracket;

a driving assembly arranged at the lower side of the seat supporting component and used for driving the seat supporting component to rotate around the bracket;

a backrest support member rotatably mounted at a rear end of the seat support member with an elastic holding member interposed therebetween;

the armrest is rotatably arranged at the upper end of the bracket;

a sliding member slidably mounted on the armrest, a rear end of the sliding member being rotatably connected to the backrest support member;

and a locking member provided between the armrest and the slide member to restrict the slide member from sliding.

By adopting the structure, the driving component drives the seat supporting component to rotate around the bracket, and the adjustment of the integral inclination angle of the seat can be realized. After the locking component is unlocked, the sliding component can slide on the armrest, and at the moment, a user pushes the backrest supporting component to rotate backwards relative to the seat supporting component by using the force of the back, so that the adjustment of the inclination angle of the backrest can be completed; meanwhile, under the unlocking state of the locking component, the back support component can automatically reset under the action of the elastic holding element without applying thrust on the back of a user. Because the locking component is arranged on the handrail, the operation of a user is more convenient.

Preferably, the method comprises the following steps: the driving assembly comprises an arc-shaped rack fixedly arranged on the support and a gear box fixedly arranged on the lower side of the seat part supporting part, a power input end of the gear box is connected with a driving motor, and a power output end of the gear box is provided with a gear meshed with the arc-shaped rack. By adopting the structure, when the integral inclination angle of the seat needs to be adjusted, the driving motor drives the gear box to work, and the gear and the arc-shaped rack are interacted, so that the seat supporting part is driven to rotate around the bracket, and the adjustment of the inclination angle of the seat is completed.

Preferably, the method comprises the following steps: the support distributes in the left and right sides of seat support component, and seat support component corresponds the support position and all installs the gear box, driving motor is dual output motor, all passes through the flexible axle connection between its two outputs and the gear box that corresponds. By adopting the structure, the seat supporting parts can be synchronously driven to rotate at the two ends, the stress distribution is more uniform, and the smoothness of seat adjustment is better.

Preferably, the method comprises the following steps: the support corresponds the position of arc rack and is equipped with the arc hole, the gear outer end is equipped with the bulge of outside extension, and this bulge slides and sets up in the arc is downthehole. By adopting the structure, the installation is convenient.

Preferably, the method comprises the following steps: the middle part of the handrail is hinged with the top end of the support, a sliding groove extending along the length direction of the handrail is arranged on the lower side of the handrail, and the sliding component is installed in the sliding groove in a sliding mode. By adopting the structure, the assembly of parts such as the handrail and the sliding part is convenient, and the sliding part can effectively slide on the handrail.

Preferably, the method comprises the following steps: lower locking teeth are distributed on the upper side of the sliding component, the locking component is rotatably mounted on the handrail, an operating convex block is arranged at the front end of the locking component, upper locking teeth matched with the lower locking teeth are arranged at the rear end of the locking component, the upper locking teeth are meshed with the lower locking teeth in a locking state of the sliding component, the operating convex block is pressed, the locking component rotates, the upper locking teeth) are separated from the lower locking teeth, and the sliding component is unlocked. By adopting the structure, the pressing operation lug drives the locking component to rotate, so that the upper locking teeth can be separated from the lower locking teeth on the sliding component, and the unlocking is finished.

Preferably, the method comprises the following steps: the handrail is provided with a strip-shaped groove, the locking part is rotatably arranged on the side wall of the strip-shaped groove, and the mounting position of the locking part is close to the upper locking tooth. By adopting the structure, the locking component can be conveniently installed, and the operating lug can be exposed, so that the unlocking by a user is facilitated.

Preferably, the method comprises the following steps: the back end of the seat supporting component is provided with a lower connecting plate which inclines relative to the horizontal plane of the seat supporting component, the lower end of the back side of the backrest supporting component is provided with an upper connecting plate which extends downwards, and the upper connecting plate is hinged on the lower connecting plate through a spring pin. By adopting the structure, the space layout is reasonable, the assembly is facilitated, the movement interference of parts can not be caused, and the movement reliability of the mechanism is ensured.

Preferably, the method comprises the following steps: the upper connecting plate is provided with an upper positioning column, the lower connecting plate is provided with a lower positioning column, the elastic retaining element is a torsion spring, the torsion spring is sleeved on a spring pin, and two ends of the torsion spring are respectively abutted to the upper positioning column and the lower positioning column. By adopting the structure, the torsion spring can be conveniently installed.

Preferably, the method comprises the following steps: the gear box is internally provided with a worm wheel and a worm which are meshed with each other, wherein the worm is in power connection with the flexible shaft, and the worm wheel and the gear are coaxially arranged through an output shaft. With the structure, when the adjustment is not needed, the seat supporting component can be kept fixed by the self-locking action of the worm wheel and the worm.

Compared with the prior art, the invention has the beneficial effects that:

by adopting the adjustable office chair provided by the invention, the driving motor drives the chair to integrally rotate, the requirement of automatic adjustment can be met, the adjustment is convenient and rich in high-grade feeling, and the user experience is effectively improved. Meanwhile, when the backrest supporting part is adjusted to rotate independently, the locking part is arranged on the armrest, unlocking operation of a user can be facilitated, the locked stress position is also arranged on the armrest, the resistance arm can be prolonged, the stress of the locking structure is more reliable, parts are not easy to damage, and the effect of prolonging the service life of the seat is achieved.

Drawings

FIG. 1 is a schematic view of an office chair;

FIG. 2 is an exploded view of the seat in the installed position in the gear box;

FIG. 3 is a bottom view of the office chair;

FIG. 4 is a schematic view of the interior of the gearbox;

FIG. 5 is another schematic view of the structure of an office chair (back side facing forward);

FIG. 6 is an enlarged view of a portion of FIG. 5 at I;

fig. 7 is a sectional view showing an assembled structure of the reaction arm rest, the slide member, and the locking member.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

In this embodiment, the seat support member 2 refers to a cushion portion of the seat, and the backrest support member 4 refers to a backrest portion of the seat, and the front, rear, left, and right directions mentioned in the present embodiment are based on the front, rear, left, and right directions of the seat itself.

As shown in fig. 1, 5, 6 and 7, an adjustable office chair structurally comprises brackets 1 symmetrically arranged on the left and right sides of the chair, a seat supporting part 2 is installed between the two brackets 1, a backrest supporting part 4 is rotatably installed at the rear end of the seat supporting part 2, an armrest 6 is rotatably installed at the top end of each bracket 1, a sliding part 7 is slidably installed in each armrest 6, the rear end of each sliding part 7 is rotatably connected with the backrest supporting part 4, a locking part 8 used for limiting the sliding of the sliding part 7 is further installed in each armrest 6, lower locking teeth 7a are distributed on the upper side of each sliding part 7, each locking part 8 is of a rod-shaped structure and rotatably installed on each armrest 6, an operating convex block 8a is arranged at the front end of each locking part 8, and upper locking teeth 8b matched with the lower locking teeth 7a are arranged at the rear end of. The seat support part 2 is rotatably connected to the backrest support part 4 at a position where an elastic holding member 5 is installed, and in this embodiment, the elastic holding member 5 is preferably a torsion spring.

When a user needs to adjust the inclination angle of the backrest support part 4, the locking part 8 is driven to rotate around the fulcrum a by manually pressing the operating convex block 8a, so that the upper locking teeth 8b are separated from the lower locking teeth 7a to complete unlocking, and then the user pushes the backrest support part 4 to rotate backwards by using the back force, so that the adjustment of the inclination angle of the backrest can be completed. After the inclination adjustment of the backrest is completed, and the user's hand leaves the operating protrusion 8a, the upper locking tooth 8b rotates downward around the fulcrum a, and the upper locking tooth 8b engages with the lower locking tooth 7a to lock the backrest support member 4 at the operating angle, wherein it should be specifically mentioned that a spring may be provided at the fulcrum a, so that the upper locking tooth 8b can automatically return when the user's hand leaves the operating protrusion 8 a. Of course, it can be automatically reset by the gravity of the upper locking tooth 8 b. Meanwhile, when the upper locking teeth 8b and the lower locking teeth 7a are in a separated state, the backrest support part 4 can be automatically reset under the action of the elastic holding element 5 without applying pushing force to the back of the user.

Locking part 8 sets up on the handrail, and not only user unblock convenient operation locks the stress point moreover and also lies in the handrail, compares traditional angle modulation release mechanism, has prolonged the resistance arm under the locking state for locking structure's atress is more reliable, and spare part is also difficult bad to be damaged, can play the effect of extension seat life.

As shown in fig. 2, 3 and 4, the seat supporting part 2 is rotatably installed between the two supports 1, and the rotation point b of the seat supporting part 2 around the support 1 coincides with the rotation point b of the armrest 6 around the support 1, a driving assembly 3 is disposed at the lower side of the seat supporting part 2, the driving assembly 3 comprises an arc-shaped rack 3a fixedly installed at the inner side of the support 1, and a gear box 3b fixedly installed at the lower side of the seat supporting part 2, the power input end of the gear box 3b is connected with a driving motor 3c through a flexible shaft 3e, and the power output end is provided with a gear 3d engaged with the arc-shaped rack 3 a.

When the locking component 8 is in a locked state, the driving motor 3c is started, the driving motor 3c drives the gear box 3b to operate, the gear 3d and the arc-shaped rack 3a can interact, and the seat supporting component 2 is driven to rotate around the bracket 1 by taking the rotating point b as a fulcrum, so that the adjustment of the integral inclination angle of the seat is completed.

As shown in fig. 3, the gear boxes 3b are installed on the left side and the right side of the seat supporting component 2, the driving motor 3c is a dual-output motor, two output ends of the driving motor are connected with the corresponding gear boxes 3b through flexible shafts 3e, the seat supporting component 2 can be synchronously driven to rotate at the left end and the right end of the seat by adopting the structural layout, the stress distribution is more uniform, and the smoothness of the overall adjustment of the seat is better.

As shown in fig. 4, a worm wheel 3g and a worm 3h are provided in the gear case 3b to mesh with each other, wherein the turbine 3g is sleeved with an output shaft 3i, the gear 3d is fixedly arranged on the output shaft 3i, the end part of the worm 3h is provided with a power input port 3k, one end of the flexible shaft 3e is connected with the driving motor 3c, the other end is connected in the power input port 3k of the worm 3h, based on the structural layout, the driving motor 3c works, the output power is transmitted to a gear 3d through a flexible shaft 3e, a worm 3h, a turbine 3g and an output shaft 3i in turn, thereby the seat supporting component 2 rotates, and the power is transmitted through the worm wheel 3g and the worm 3h in the gear box 3b, the vertical power output between the flexible shaft 3e and the output shaft 3i is ensured, and the seat can be kept fixed by the self-locking action of the worm wheel 3g and the worm 3h when the seat is not adjusted.

As shown in fig. 2, the bracket 1 is provided with an arc-shaped hole 1a at a position corresponding to the arc-shaped rack 3a, the end of the gear 3d is provided with a protruding part 3f extending outwards, and the protruding part 3f is slidably arranged in the arc-shaped hole 1a, so that the gear 3d can be ensured to be continuously meshed with the arc-shaped rack 3a when rotating.

As shown in fig. 5 and 7, the middle of the armrest 6 is hinged to the top end of the support 1, a sliding groove 6a extending along the length direction of the armrest 6 is formed in the lower side of the armrest 6, the sliding member 7 is slidably mounted in the sliding groove 6a, a strip-shaped groove 6b is further formed in the armrest 6, and the locking member 8 is rotatably mounted on the side wall of the strip-shaped groove 6b at the position of a pivot point a, so that the armrest 6, the sliding member 7 and other components can be conveniently assembled, the sliding member 7 can be guaranteed to effectively slide on the armrest 6, and the operating protrusion 8a is exposed on the upper surface of the armrest 6 after the locking member 8 is assembled, and unlocking operation of a user is facilitated.

As shown in fig. 6, in order to meet the requirement of spatial layout and prevent the mechanism from moving and interfering, the rear end of the seat supporting component 2 is provided with a lower connecting plate 2a, the lower connecting plate 2a is arranged obliquely relative to the horizontal plane of the seat supporting component 2, the lower end of the backrest supporting component 4 is provided with an upper connecting plate 4a, the upper connecting plate 4a extends downwards from the rear side of the backrest supporting component 4, the upper connecting plate 4a is hinged to the lower connecting plate 2a through a spring pin 9, the upper connecting plate 4a is further provided with an upper positioning column 4b, the lower connecting plate 2a is further provided with a lower positioning column 2b, a torsion spring is sleeved on the spring pin 9, and two ends of the torsion spring are respectively abutted to the upper positioning column 4b and the lower positioning column 2b, and such structural arrangement can also ensure that the torsion spring.

The sliding element 7 can also take the form of a rack directly, the teeth of which form the abovementioned lower locking teeth 4b 1.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. An adjustable office chair, comprising:

a support (1);

a seat supporting member (2) rotatably mounted on the bracket (1);

a driving assembly (3) arranged at the lower side of the seat supporting component (2) and used for driving the seat supporting component (2) to rotate around the bracket (1);

a backrest support member (4) rotatably mounted at a rear end of the seat support member (2), an elastic holding element (5) being provided between the backrest support member (4) and the seat support member (2);

the handrail (6) is rotatably arranged at the upper end of the bracket (1);

a sliding member (7) slidably mounted on the armrest (6), the rear end of the sliding member (7) being rotatably connected to the backrest support member (4);

and a locking member (8) provided between the armrest (6) and the slide member (7) to restrict the slide member (7) from sliding.

2. The adjustable office chair of claim 1, wherein: the driving assembly (3) comprises an arc-shaped rack (3a) fixedly arranged on the support (1) and a gear box (3b) fixedly arranged on the lower side of the seat part supporting component (2), the power input end of the gear box (3b) is connected with a driving motor (3c), and the power output end is provided with a gear (3d) meshed with the arc-shaped rack (3 a).

3. The adjustable office chair of claim 2, wherein: the support (1) is distributed on the left side and the right side of the seat supporting component (2), the gear boxes (3b) are installed on the seat supporting component (2) corresponding to the position of the support (1), the driving motor (3c) is a double-output motor, and two output ends of the driving motor are connected with the corresponding gear boxes (3b) through flexible shafts (3 e).

4. The adjustable office chair of claim 3, wherein: the position that support (1) corresponds arc rack (3a) is equipped with arc hole (1a), gear (3d) outer end is equipped with outside extension's bulge (3f), and this bulge (3f) slide to be set up in arc hole (1 a).

5. The adjustable office chair according to any one of claims 1 to 4, wherein: the middle part of the handrail (6) is hinged with the top end of the support (1), a sliding groove (6a) extending along the length direction of the handrail (6) is formed in the lower side of the handrail (6), and the sliding component (7) is installed in the sliding groove (6a) in a sliding mode.

6. The adjustable office chair of claim 5, wherein: lower locking teeth (7a) are distributed on the upper side of the sliding component (7), the locking component (8) is rotatably mounted on the armrest (6), an operating lug (8a) is arranged at the front end of the locking component (8), upper locking teeth (8b) matched with the lower locking teeth (7a) are arranged at the rear end of the locking component (8), the upper locking teeth (8b) are meshed with the lower locking teeth (7a) in the locking state of the sliding component (7), the operating lug (8a) is pressed, the locking component (8) rotates, the upper locking teeth (8b)) are separated from the lower locking teeth (7a), and the sliding component (7) is unlocked.

7. The adjustable office chair of claim 6, wherein: a strip-shaped groove (6b) is formed in the handrail (6), the locking component (8) is rotatably mounted on the side wall of the strip-shaped groove (6b), and the mounting position of the locking component is close to the upper locking tooth (8 b).

8. The adjustable office chair of claim 5, wherein: the back end of the seat supporting component (2) is provided with a lower connecting plate (2a) which is inclined relative to the horizontal plane, the lower end of the back side of the backrest supporting component (4) is provided with an upper connecting plate (4a) which extends downwards, and the upper connecting plate (4a) is hinged on the lower connecting plate (2a) through a spring pin (9).

9. The adjustable office chair of claim 8, wherein: the upper connecting plate (4a) is provided with an upper positioning column (4b), the lower connecting plate (2a) is provided with a lower positioning column (2b), the elastic retaining element (5) is a torsion spring, the torsion spring is sleeved on a spring pin (9), and two ends of the torsion spring are respectively abutted to the upper positioning column (4b) and the lower positioning column (2 b).

10. The adjustable office chair of claim 3, wherein: a turbine (3g) and a worm (3h) which are meshed with each other are arranged in the gear box (3b), the worm (3h) is in power connection with the flexible shaft (3e), and the turbine (3g) and the gear (3d) are coaxially mounted through an output shaft (3 i).