CN213696291U

CN213696291U - An office chair with adjustable seat height

Info

Publication number: CN213696291U
Application number: CN202022642457.6U
Authority: CN
Inventors: 朱晓雄
Original assignee: Anji Aojia Household Products Co ltd
Current assignee: Anji Aojia Household Products Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-07-16
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses an office chair of high liftable of seat, including seat, elevating system, landing leg, elevating system includes screw rod, inner skleeve, runner, strutting arrangement, outer sleeve, seat bottom connecting screw, inner skleeve and screw rod threaded connection, and the sleeve bottom is fixed with the runner, and the runner dress is fixed with the outer sleeve on the strutting arrangement in the strutting arrangement, and the outer sleeve top is equipped with spacing, is equipped with the spacing groove on the screw rod, and strutting arrangement includes base, tapered roller bearing, gag lever post, clamp plate, support, and the runner is equipped with the spacing hole of a plurality of along the border round. When the height of the seat needs to be adjusted, the pressing plate is stepped on to pull up the limiting rod, the seat is pulled downwards or upwards, the screw rod descends or ascends to drive the inner sleeve and the rotating wheel to rotate, the pressing plate is loosened after the height is proper to drive the limiting rod to be inserted into the limiting hole, so that the inner sleeve and the rotating wheel cannot rotate, the screw rod cannot rotate on the outer sleeve, the seat is adjusted and kept stable, and the operation is simple and the lifting is safe.

Description

Office chair with height-adjustable seat

Technical Field

The utility model relates to an office chair technical field, the concrete field is an office chair of high liftable of seat.

Background

The office chair refers to various chairs which are convenient to work in daily work and social activities, and comprises a computer chair, a guest-meeting chair, a staff chair, a conference chair, a visitor chair, a training chair and the like.

Most office chairs at present all adopt the vapour-pressure type to carry out altitude mixture control to it, but in recent years, vapour-pressure type lift chair has appeared many incident that arouse by the cylinder explosion in the in-service use, and the structure of vapour-pressure type lift chair is comparatively complicated simultaneously, and is strict to the sealed spare of atmospheric pressure requirement, is unfavorable for fast assembly production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an office chair of seat height liftable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an office chair with a height-adjustable seat comprises a seat, a lifting mechanism and supporting legs, wherein the lifting mechanism comprises a screw rod, an inner sleeve, a rotating wheel, a supporting device and an outer sleeve, a flange is fixedly arranged at the center of the bottom of the seat and welded at the top of the vertically-placed screw rod, threads are arranged in the inner sleeve and are in threaded connection with the lower part of the screw rod through the threads, the rotating wheel which is horizontally placed is fixed on the outer wall of the bottom of the sleeve, the rotating wheel is installed in the supporting device and can horizontally rotate along with the sleeve in the supporting device, the outer sleeve sleeved outside the inner sleeve is fixed on the supporting device, the top of the outer sleeve vertically extends towards the screw rod, a limiting strip is arranged at the joint, a limiting groove which penetrates through the whole rod and is matched with the size of the limiting strip is arranged on the screw rod along the rod, four supporting legs are arranged on the periphery of the supporting device at equal intervals.

Preferably, strutting arrangement includes base, tapered roller bearing, gag lever post, clamp plate, support, the base internal fixation has two covers and is in on the inner skleeve and be located respectively the tapered roller bearing of runner top, below, the runner edgewise round be equipped with a plurality of with the spacing hole that the gag lever post size matches, insert the gag lever post below spacing downthehole, gag lever post top swing joint the one end of clamp plate, the clamp plate is kept away from the one end of gag lever post is equipped with the bar groove and passes through bar groove swing joint the support top.

Preferably, the base is internally provided with a groove required by the movement of the tapered roller bearing, the limiting rod, the pressing plate and the support, and the groove at the joint of the base and the limiting rod has the same diameter as the limiting rod.

Preferably, an elastic blocking pad positioned right above the joint of the limiting rod and the pressing plate is fixed in the groove of the base.

Preferably, one end of the pressure plate, which is far away from the limiting rod, extends out of the base.

Preferably, universal wheels are mounted at the bottoms of the four support legs.

Preferably, armrests are mounted on both sides of the seat.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides an office chair of high liftable of seat, when needing to adjust the seat, steps on the clamp plate and pulls up the gag lever post, and downward or upwards stimulate the seat for the screw rod descends or rises and drives inner skleeve and runner rotation, loosens the clamp plate after highly suitable and drives the gag lever post and insert and make inner skleeve, runner can't rotate in spacing downthehole, because the screw rod can't rotate on the outer skleeve, realizes just remain stable to the regulation of seat, easy operation and lift safety.

Drawings

Fig. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic structural view of the outer sleeve and the spacing strip of the present invention;

FIG. 3 is a schematic view of the screw and the limiting groove of the present invention;

FIG. 4 is a schematic structural view of the inner sleeve, the rotating wheel and the supporting device of the present invention;

FIG. 5 is a schematic structural view of the base, the limiting rod, the pressing plate, the support, and the elastic cushion of the present invention;

FIG. 6 is a schematic view of the structure of the rotating wheel and the limiting hole of the present invention;

in the figure: 1. a seat; 2. a lifting mechanism; 3. a support leg; 4. a screw; 5. an inner sleeve; 6. a rotating wheel; 7. a support device; 8. an outer sleeve; 9. a flange; 10. a limiting strip; 11. a limiting groove; 12. a base; 13. a tapered roller bearing; 14. a limiting rod; 15. pressing a plate; 16. a support; 17. a limiting hole; 18. An elastic block pad; 19. a universal wheel; 20. a handrail.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-6, the present invention provides a technical solution: an office chair with a liftable seat height comprises a seat 1, a lifting mechanism 2 and supporting legs 3, wherein the lifting mechanism 2 comprises a screw rod 4, an inner sleeve 5, a rotating wheel 6, a supporting device 7 and an outer sleeve 8, a flange 9 is fixedly arranged at the center of the bottom of the seat 1 and is welded at the top of the vertically placed screw rod 4, threads are arranged in the inner sleeve 5 and are in threaded connection with the lower part of the screw rod 4 through the threads, the rotating wheel 6 horizontally arranged is fixed on the outer wall of the bottom of the sleeve 5, the rotating wheel 6 is installed in the supporting device 7 and can horizontally rotate along with the sleeve 5 in the supporting device 7, the outer sleeve 8 sleeved outside the inner sleeve 5 is fixed on the supporting device 7, the top of the outer sleeve 8 vertically extends towards the screw rod 4, a connecting part is provided with a limiting strip 10, a limiting groove 11 penetrating through the whole rod and matched with the limiting strip 10 in size is arranged on the screw rod 4 along the rod direction, four supporting legs 3 are arranged around the supporting device 7 at equal intervals, so that when the height of the seat 1 needs to be adjusted, the seat 1 is pulled downwards or upwards, the screw rod 4 descends or ascends to drive the inner sleeve 5 and the rotating wheel 6 to rotate in the supporting device 7.

Particularly, strutting arrangement 7 includes base 12, tapered roller bearing 13, gag lever post 14, clamp plate 15, support 16, base 12 internal fixation has two covers and is in on the inner skleeve 5 and be located respectively tapered roller bearing 13 of 6 tops of runner, below, 6 edgewise circles be equipped with a plurality of with the spacing hole 17 that gag lever post 14 size matches, insert 14 below of gag lever post in

spacing hole

17, 14 top swing joint of gag lever post 15 one end, clamp plate 15 keeps away from the one end of gag lever post 14 is equipped with the bar groove and passes through bar groove swing joint the 16 tops of support makes through control clamp plate 15 drives gag lever post 14 business turn over spacing hole 17 realizes right the inner skleeve 5 with the rotation of runner 6 is with fixed.

Specifically, the base 12 is provided with a groove required for the movement of the tapered roller bearing 13, the limiting rod 14, the pressing plate 15 and the support 16, and the groove at the joint of the base 12 and the limiting rod 14 has the same diameter as the limiting rod 14, so that the limiting rod 14 does not shake when passing in and out of the limiting hole 17.

Specifically, an elastic blocking pad 18 located right above the connection between the limiting rod 14 and the pressing plate 15 is fixed in the groove of the base 12 to press the pressing plate 15, so that the limiting rod 14 is stable when inserted into the limiting hole 17.

Specifically, one end of the pressing plate 15, which is far away from the limiting rod 14, extends out of the base 12, so that the pressing plate 15 can be controlled by foot treading.

Specifically, universal wheels 19 are mounted at the bottoms of the four legs 3, so that the seat 1 can be moved conveniently.

Specifically, armrests 20 are mounted on both sides of the seat 1, so that the seat can be conveniently held.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: when the seat 1 needs to be lowered, the foot is used for stepping on the pressing plate 15 to pull up the limiting rod 14, the seat 1 is pressed downwards by hand, the screw rod 4 is made to descend to drive the inner sleeve 5 and the rotating wheel 6 to rotate, the pressing plate 15 is loosened after the height is proper, the pressing plate 15 can drive the limiting rod 14 to be inserted into the limiting hole 17 under the extrusion of the self gravity and the elastic cushion 18, so that the inner sleeve 5 and the rotating wheel 6 cannot rotate, and the screw rod 4 cannot rotate on the outer sleeve 8, so that the lowering of the seat 1 is realized and the seat 1 is kept stable; when needing to heighten seat 1, trample on clamp plate 15 and pull up gag lever post 14, upwards pull up seat 1 with the hand, screw rod 4 rises and drives inner skleeve 5 and runner 6 rotatory, loosens clamp plate 15 after highly suitable and drives gag lever post 14 and insert and make inner skleeve 5, runner 6 unable rotation in spacing hole 17, because screw rod 4 can't rotate on outer sleeve 8, realize heightening and remain stable to seat 1, this office chair easy operation and lift safety.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An office chair whose seat height can be raised and lowered, characterized in that it comprises a seat (1), a lifting mechanism (2), and an outrigger (3), and the lifting mechanism (2) comprises a screw (4), an inner A sleeve (5), a runner (6), a support device (7), an outer sleeve (8), a flange (9) is fixedly installed in the center of the bottom of the seat (1), and the flange (9) It is welded on the top of the vertical screw (4), the inner sleeve (5) is provided with a thread and is threadedly connected to the bottom of the screw (4) through the thread, and the outer wall of the bottom of the sleeve (5) The runner (6) lying flat is fixed, the runner (6) is installed in the supporting device (7) and the runner (6) can follow the supporting device (7) The sleeve (5) rotates horizontally, the support device (7) is fixed with the outer sleeve (8) sleeved outside the inner sleeve (5), and the top of the outer sleeve (8) faces toward The screw (4) extends vertically and a limit bar (10) is arranged at the connection, and along the rod direction, the screw (4) is provided with a limit that runs through the entire rod and matches the size of the limit bar (10). In the groove (11), four supporting legs (3) are installed around the supporting device (7) at equal intervals.

2. An office chair with a height adjustable seat according to claim 1, wherein the support device (7) comprises a base (12), a tapered roller bearing (13), a limit rod (14) ), a pressure plate (15), a support (16), and the base (12) is fixed with two sleeves that are sleeved on the inner sleeve (5) and are located above and below the runner (6) respectively. The tapered roller bearing (13), the runner (6) is provided with a number of limit holes (17) that match the size of the limit rod (14) along the edge, and the limit rod (14) ) is inserted into the limit hole (17), the top of the limit rod (14) is movably connected to one end of the pressure plate (15), and the pressure plate (15) is away from the position of the limit rod (14). One end is provided with a bar-shaped groove and is movably connected to the top of the support (16) through the bar-shaped groove.

3. The office chair whose seat height can be raised and lowered according to claim 2, wherein the base (12) is provided with the tapered roller bearing (13) and the limit rod (14). ), the groove required for the movement of the pressure plate (15) and the support (16), the groove at the connection between the base (12) and the limit rod (14) and the limit rod ( 14) Same diameter.

4. The office chair whose seat height can be raised and lowered according to claim 2, characterized in that a groove located in the limit rod (14) and the pressure plate ( 15) The elastic stopper (18) just above the connection.

5 . The office chair with a liftable seat height according to claim 2 , wherein an end of the pressing plate ( 15 ) away from the limit rod ( 14 ) extends to the outside of the base ( 12 ). 6 . .

6 . The office chair with a liftable seat height according to claim 1 , wherein universal wheels ( 19 ) are installed on the bottoms of the four outriggers ( 3 ). 7 .

7. The office chair with adjustable seat height according to claim 1, wherein armrests (20) are installed on both sides of the seat (1).