CN108294516B

CN108294516B - Office chair

Info

Publication number: CN108294516B
Application number: CN201810074923.XA
Authority: CN
Inventors: 许国威
Original assignee: Hangzhou Dinghui Household Technology Co ltd
Current assignee: Hangzhou Dinghui Household Technology Co ltd
Priority date: 2018-01-25
Filing date: 2018-01-25
Publication date: 2020-08-21
Anticipated expiration: 2038-01-25
Also published as: CN108294516A

Abstract

The invention discloses an office chair which comprises a seat part for a user to press and sit, a leaning part for supporting the back of the user and a supporting part for supporting the seat part, wherein a connecting component for enabling the leaning part to be in ball joint with the seat part and an elastic component for enabling the leaning part to reset are arranged between the leaning part and the seat part. When a user sits on the seat part and leans against the leaning part, if the back of the user inclines, the back of the user has driving force to the leaning part, so that the leaning part rotates relative to the seat part and moves along with the back of the user, and further, under the general condition, the leaning part can always provide leaning force for the user, and the use comfort is improved. Meanwhile, as the leaning part is connected with the seat part by the ball, the inclination angle of the leaning part relative to the seat part can also be changed along with the force application of the back to the leaning part required by the user, so that the leaning part is more in line with the use habit of each user.

Description

Office chair

Technical Field

The invention relates to the technical field of furniture, in particular to an office chair.

Background

The chair is as a life instrument indispensable in the life at home, office environment, and not only the life at home uses the chair to have the comfort requirement that is higher and higher, has obvious promotion requirement to the travelling comfort and the operability of chair even the office environment also under work efficiency's prerequisite, and the back of the chair of present general chair all has the function of leaning on, and can lock the back of the chair in specific position.

Patent No. CN201320693625.1 discloses a tray locking structure that is suitable for use in a chair and allows for a toggle adjustment for stepless tilting. The locking structure comprises a tray, wherein the tray comprises a fixed disc, a movable disc, an installation disc and an adjusting structure, the movable disc is hinged to the fixed disc and fixedly connected with the chair seat, the installation disc is respectively hinged to the fixed disc and the movable disc and fixedly connected with the chair back, and the adjusting structure is used for enabling the fixed disc and the movable disc to be relatively fixed or facilitating relative angular displacement.

The adjusting structure comprises a lock sleeve, a guide shaft, a limiting piece, a spring, a first contact surface and a second contact surface, wherein the lock sleeve is fixed on the fixed disc, one end of the lock sleeve is provided with a retaining ring, the other end of the lock sleeve is provided with a retaining piece, the guide shaft is positioned in the lock sleeve, the other end of the guide shaft is positioned outside the lock sleeve, the limiting piece is fixed on the outer portion of the lock sleeve, the spring is arranged between the retaining ring and the retaining piece, the first contact surface and the second contact surface are hinged to the lock sleeve, are provided with two crossed contact surfaces and can act on the retaining piece, can be manually shifted along the front end direction and the rear end direction of the chair seat to switch the contact surfaces which are currently contacted with the retaining piece.

The distance between the first collision surface and the hinged position of the lock sleeve and the operating lever is greater than the distance between the second collision surface and the hinged position of the lock sleeve and the operating lever; the sliding piece is provided with a first sliding groove which can enable the sliding piece to move along the length direction of the sliding piece relative to the guide shaft or the movable disc.

Through stirring around to the control rod to realize conflict face one and conflict switching of face two, make the spring realize flexible, thereby promote the removal of guide shaft, and then realize compressing tightly and relaxing the gleitbretter. When the spring is in a relaxed state, the sliding sheet is in a relaxed state, and the movable disc can be manually relatively rotated to the fixed disc, so that the inclination angle of the chair seat is adjusted. When the spring is in a compressed state, the slide is compressed, thereby locking the movable disk.

However, the existing chair can only tilt forward and backward, and when the body of a user tilts, the user cannot well provide leaning force for the user, so that the use comfort is poor.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an office chair, wherein a leaning part can incline along with the inclination of the body of a user, so that the back of the user is always supported, and the comfort is further improved.

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

an office chair comprises a seat portion for a user to press and sit, a leaning portion for supporting the back of the user and a supporting portion for supporting the seat portion, wherein a connecting assembly enabling the leaning portion to be in ball joint with the seat portion and an elastic assembly enabling the leaning portion to reset are arranged between the leaning portion and the seat portion.

Through adopting above-mentioned technical scheme, sit in seat portion when the user to lean on back on the portion of leaning on, if user back slope, user back has a drive to the portion of leaning on, makes the relative seat portion rotation of portion of leaning on, follows user back and moves together, and then makes under the general condition, the portion of leaning on can provide the leaning on power for the user always, improves use comfort. Meanwhile, as the leaning part is connected with the seat part by the ball, the inclination angle of the leaning part relative to the seat part can also be changed along with the force application of the back to the leaning part required by the user, so that the leaning part is more in line with the use habit of each user.

The invention is further provided with: the connecting assembly comprises a ball joint and a connecting seat provided with a ball groove, and the ball joint is embedded in the ball groove and rotates in the ball groove in a universal mode.

Through adopting above-mentioned technical scheme to make the universal rotation of portion of leaning on connect in seat portion, make the portion of leaning on can be better along with the motion of user's back and move, improve use comfort.

The invention is further provided with: the ball joint is fixedly arranged on the lower end surface of the leaning part or the upper end surface of the seat part.

Through adopting above-mentioned technical scheme to make the inclinable angle of leaning part relative seat portion better, leaning part can be close to parallelly relative seat portion, thereby can regard this seat portion as deck chair to use, enlarged its application scope.

The invention is further provided with: the ball joint is fixedly arranged on one side of the leaning part facing the seat part or one side of the leaning part back to the seat part.

Through adopting above-mentioned technical scheme to when installation elastic component, only need make elastic component be on a parallel with the ball joint can, simple to operate. And the leaning part can only rotate within a certain range, so that the situation that the gravity center of a user is unstable due to excessive backward tilting of the user is reduced.

The invention is further provided with: the elastic component comprises a connecting rod and an elastic sleeve sleeved outside the connecting rod; when the leaning part rotates relative to the seat part, two ends of the connecting rod are respectively connected to the leaning part and the seat part, and two ends of the elastic sleeve are respectively abutted to the leaning part and the seat part.

Through adopting above-mentioned technical scheme, when leaning on the relative seat portion motion of portion, the elastic sleeve warp and accumulates potential energy, and when user and back left leaning on the portion, the elastic potential energy of elastic sleeve turned into the drive power to leaning on the portion, makes leaning on the portion reset. The leaning part is positioned at the initial setting position as much as possible, and a reference is given to a user, so that the sitting posture of the user can be more correct. Meanwhile, the elastic sleeve has certain resistance to the leaning part when the leaning part rotates, so that the leaning part can rotate more stably, and the phenomena of sudden backward tilting and the like of the leaning part are reduced.

The invention is further provided with: connecting rod one end threaded connection is in leaning on portion and other end are worn into seat portion, the connecting rod is worn into seat portion in one end and is equipped with flexible piece, seat portion is equipped with the holding tank that is used for preventing flexible piece to leave seat portion, flexible piece inlays and locates in the holding tank and sliding connection in the holding tank.

Through adopting above-mentioned technical scheme, the holding tank has a limiting displacement to flexible piece, and then ensures that the connecting rod can rotate the in-process at the relative seat portion of lean portion, and a straight line connection in the lean portion, and then makes the elastic sleeve can exert reset and cushioning effect that it should have.

The invention is further provided with: and a fixing piece used for fixing the leaning part relative to the seat part is arranged between the leaning part and the seat part.

By adopting the technical scheme, if a user needs to sleep or finds the position where the user sits comfortably, the backrest part can be fixed through the fixing part, so that the backrest part is fixed relative to the seat part, and the phenomenon that the backrest part rotates due to misoperation is reduced. So that the user can keep a comfortable sitting posture more stably.

The invention is further provided with: the fixing piece is a fastening bolt, the fastening bolt is located on one side of the connecting seat and is in threaded connection with the connecting seat along the radial direction of the ball groove, and when the fastening bolt is fastened to the ball joint, the leaning portion is fixed relative to the seat portion.

By adopting the technical scheme, the abutting bolt abuts against the ball joint by screwing the abutting bolt, so that the force required to be overcome when the ball joint rotates relative to the connecting seat is increased, the ball joint is fixed relative to the connecting seat, and the leaning part is fixed relative to the seat part. When the leaning part needs to be changed in position along with the sitting posture of a user, the abutting bolt only needs to be loosened.

The invention is further provided with: the leaning part is sunken towards one side of the seat part to form a groove for wrapping the back of a user.

Through adopting above-mentioned technical scheme, when using, the user can be in the recess with the back is whole, and then makes its back receive better support and lean on and hold in the palm. Meanwhile, when the sitting posture of a user changes and the back of the user inclines, the groove side wall is also provided with a driving force, so that the leaning part can change better along with the change of the appearance of the user, and the use comfort level of the leaning part is improved.

The invention is further provided with: the leaning part is provided with a limiting block on two sides for limiting the shoulder position of a user.

Through adopting above-mentioned technical scheme, when user's position of sitting changes, back slope, can have a drive power to the stopper, make the better along with user's appearance change of portion of leaning on and change, improved its use comfort.

The invention has the following advantages: 1. the leaning part can change along with the sitting posture of a user and rotate relative to the seat part, so that the leaning force is provided for the back of the user as far as possible, and the use comfort is improved; 2. the leaning part can be fixed relative to the seat part, and the phenomenon that the user loses the most comfortable sitting posture due to misoperation is reduced.

Drawings

FIG. 1 is a schematic structural diagram according to a first embodiment;

FIG. 2 is a side view of the first embodiment;

FIG. 3 is a partial schematic view of an exemplary embodiment of a connection assembly;

FIG. 4 is a side view of the second embodiment;

FIG. 5 is a partial schematic view of a second example connecting assembly;

FIG. 6 is a partial schematic view of a third connection assembly according to an embodiment.

Reference numerals: 1. a seat portion; 2. a leaning part; 3. a support portion; 4. a connecting assembly; 5. a ball joint; 6. a connecting seat; 7. a ball groove; 8. an elastic component; 9. a connecting rod; 10. a flexible block; 11. accommodating grooves; 12. an elastic sleeve; 13. a groove; 14. a limiting block; 15. a mounting seat; 16. a fixing member; 17. the bolt is pressed tightly.

Detailed Description

The invention is further described with reference to the accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1, an office chair includes a seat portion 1 for a user to sit on, a resting portion 2 for supporting the back of the user, and a support portion 3 for supporting the seat portion 1.

As shown in fig. 2, in order to improve the comfort of the office chair, a connecting assembly 4 is provided between the leaning part 2 and the seat part 1, and the connecting assembly 4 can make the leaning part 2 ball-jointed with the seat part 1. As shown in fig. 3, the connecting assembly 4 includes a ball joint 5 and a connecting seat 6, the connecting seat 6 is fixedly mounted on the lower end surface of the leaning portion 2, and a ball groove 7 is formed in the side surface of the downward side of the connecting seat 6. Ball joint 5 inlays and locates in ball groove 7 and universal rotation connects in ball groove 7, and ball joint 5 keeps away from leaning on 2 one end fixed mounting in seat portion 1 up end.

When the back of the user moves, an acting force can be applied to the leaning part 2, so that the leaning part 2 rotates relative to the seat part 1 along with the change of the back posture of the user, and the back of the user is always supported by the leaning part 2.

As shown in fig. 3, an elastic member 8 is provided between the reclining portion 2 and the seat portion 1 in order to facilitate the return of the reclining portion 2 to the optimum sitting posture. The elastic component 8 comprises a connecting rod 9 and an elastic sleeve 12 sleeved outside the connecting rod 9. One end of the connecting rod 9 is screwed to the leaning part 2 and the other end thereof penetrates into the seat part 1. The connecting rod 9 is provided with a flexible block 10 at one end penetrating into the seat part 1, the seat part 1 is provided with an accommodating groove 11 for preventing the flexible block 10 from leaving the seat part 1, and the flexible block 10 is embedded in the accommodating groove 11 and is connected with the accommodating groove 11 in a sliding manner. The elastic sleeve 12 is sleeved outside the connecting rod 9, and two ends of the elastic sleeve 12 are respectively abutted against the leaning part 2 and the seat part 1.

As shown in FIG. 1, in order to make the leaning part 2 follow the change of the back position of the user better, the leaning part 2 is concave towards the seat part 1 to form a groove 13 for wrapping the back of the user. Both sides of the leaning part 2 are provided with a limiting block 14 for limiting the shoulder position of a user.

The use principle of the office chair is as follows:

in daily use, a user sits on the seat portion 1 and leans against the leaning portion 2; if the back of the user inclines or falls backwards, the back of the user applies force to the leaning part 2 to enable the leaning part 2 to rotate relative to the seat part 1, so that the back of the user is supported all the time in the using process, and the using comfort degree is improved.

When the user needs to perfect the sitting posture and sits at the right time, the back part can be separated from the leaning part 2, and the leaning part 2 rotates relative to the seat part 1 under the action of the elastic sleeve 12 and is reset to the initially arranged position. The user is given a reference to allow the user to sit upright on the office chair.

Example two:

the difference between the second embodiment and the first embodiment is that: as shown in fig. 4, the seat portion 1 is provided with a mounting seat 15 near one end of the connecting component 4, and the mounting seat 15 is L-shaped and opens toward the seat portion 1. The rest portion 2 is located on the side of the mounting seat 15 close to the seat portion 1. As shown in fig. 5, the connecting assembly 4 includes a ball joint 5 and a connecting seat 6, the connecting seat 6 is fixedly mounted on one side of the leaning portion 2 facing the mounting seat 15, and a ball groove 7 is formed in a side surface of the connecting seat 6 facing the mounting seat 15. Ball joint 5 inlays and locates in ball groove 7 and universal rotation connects in ball groove 7, and ball joint 5 is kept away from leaning on 2 one end fixed mounting in the relative leaning on portion 2 one side of mount pad 15.

Example three:

the difference between the third embodiment and the first embodiment is that:

as shown in FIG. 6, in order to prevent the reclining portion 2 from rotating with respect to the seat portion 1 due to a wrong operation, the user loses the most comfortable sitting posture. A fixing piece 16 is arranged between the leaning part 2 and the seat part 1, and the fixing piece 16 is a fastening bolt 17. The abutting bolt 17 is positioned at one side of the connecting seat 6 and is connected to the connecting seat 6 along the radial direction of the ball groove 7 in a threaded manner. When the fastening bolt 17 is screwed to fasten the fastening bolt 17 to the ball joint 5, the leaning part 2 is fixed relative to the seat part 1.

In practical use, a user can adjust the leaning part 2 to the position which is most comfortable when sitting according to the requirement, and then the leaning part 2 is fixed relative to the seat part 1 by screwing the abutting bolt 17. When the most comfortable sitting posture is adjusted, a user directly leans against the leaning part 2, the most comfortable sitting posture can be accurately positioned, and the adjustment is convenient. If the user needs to sit freely and the leaning part 2 moves along with the back of the user, the fastening bolt 17 is loosened.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. An office chair comprising a seat portion (1) for a user to sit on, a resting portion (2) for supporting the back of the user, and a support portion (3) for supporting the seat portion (1), characterized in that: a connecting component (4) for enabling the leaning part (2) to be in ball joint with the seat part (1) and an elastic component (8) for enabling the leaning part (2) to reset are arranged between the leaning part (2) and the seat part (1); the connecting assembly (4) comprises a ball joint (5) and a connecting seat (6) provided with a ball groove (7), and the ball joint (5) is embedded in the ball groove (7) and rotates in the ball groove (7) in a universal manner; the ball joint (5) is fixedly arranged on the lower end surface of the leaning part (2) or the upper end surface of the seat part (1); the elastic component (8) comprises a connecting rod (9) and an elastic sleeve (12) sleeved outside the connecting rod (9); when the leaning part (2) rotates relative to the seat part (1), two ends of the connecting rod (9) are respectively connected to the leaning part (2) and the seat part (1), and two ends of the elastic sleeve (12) are respectively abutted to the leaning part (2) and the seat part (1).

2. An office chair as claimed in claim 1, wherein: connecting rod (9) one end threaded connection is in leaning on portion (2) and the other end wears seat portion (1), connecting rod (9) are worn seat portion (1) in one end and are equipped with flexible piece (10), seat portion (1) is equipped with and is used for preventing that flexible piece (10) from leaving holding tank (11) of seat portion (1), flexible piece (10) inlay locate in holding tank (11) and sliding connection in holding tank (11).

3. An office chair as claimed in claim 2, wherein: a fixing piece (16) used for fixing the leaning part (2) relative to the seat part (1) is arranged between the leaning part (2) and the seat part (1).

4. An office chair as claimed in claim 3, wherein: the fixing piece (16) is a fastening bolt (17), the fastening bolt (17) is located on one side of the connecting seat (6) and is in threaded connection with the connecting seat (6) along the radial direction of the ball groove (7), and when the fastening bolt (17) fastens the ball joint (5), the leaning portion (2) is fixed relative to the seat portion (1).

5. An office chair as claimed in claim 1, wherein: the leaning part (2) is sunken towards one side of the seat part (1) to form a groove (13) used for wrapping the back of a user.

6. An office chair as claimed in claim 5, wherein: both sides of the leaning part (2) are provided with limiting blocks (14) for limiting the shoulder positions of users.