CN108937287B

CN108937287B - High strength swivel chair bracket

Info

Publication number: CN108937287B
Application number: CN201810923522.7A
Authority: CN
Inventors: 章忠平
Original assignee: Anji Longbo Furniture Design Co ltd
Current assignee: Anji Longbo Furniture Design Co ltd
Priority date: 2018-08-14
Filing date: 2018-08-14
Publication date: 2021-10-15
Anticipated expiration: 2038-08-14
Also published as: CN108937287A

Abstract

The utility model provides a high strength swivel chair leg rest, include with swivel chair pivot connection the in-connection adapter sleeve and with outer leg rest circle, the connection of the in-connection adapter sleeve coaxial core setting the in-connection adapter sleeve with a plurality of strengthening ribs of outer leg rest circle, in-connection adapter sleeve, outer leg rest circle and a plurality of strengthening rib integrated into one piece. The invention is effectively suitable for people with large size and heavy weight, and has the advantages of good integral strength, good use effect and the like.

Description

High strength swivel chair bracket

Technical Field

The invention relates to a high-strength swivel chair footrest.

Background

The swivel chair is a common chair for bars, and a foot rest is usually arranged on a rotating shaft of the swivel chair to meet the use requirement. In order to meet the use requirements of special crowds such as the crowds with large children and heavy weight, the foot rest is generally designed to be large in size and comprises an inner connecting sleeve, an outer foot rest ring and reinforcing ribs for connecting the inner connecting sleeve and the outer foot rest ring, the reinforcing ribs are generally connected in a bolt connecting piece or welding mode, and the problem that connection is easy to loose or a welding part is easy to break exists when the crowds with large children and heavy weight use the foot rest in the connecting mode, so that the stability is poor and the use effect is poor. In addition, the footrest is fixed and cannot be adjusted in position in a self-adaptive manner according to the height of the user.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the high-strength revolving chair footrest which is effectively suitable for people with large size and heavy weight and has the advantages of good overall strength, good use effect and the like.

The specific technical scheme of the invention is as follows: the utility model provides a high strength swivel chair leg rest, include with swivel chair pivot connection the in-connection adapter sleeve and with outer leg rest circle, the connection of the in-connection adapter sleeve coaxial core setting the in-connection adapter sleeve with a plurality of strengthening ribs of outer leg rest circle, in-connection adapter sleeve, outer leg rest circle and a plurality of strengthening rib integrated into one piece. Compared with the prior art, this application, in-connection cover, outer bracket and a plurality of strengthening rib integrated into one piece, the bulk strength is high, is effectively applicable to the great, heavy crowd of weight of son, excellent in use effect.

Preferably, the inner connecting sleeve is provided with a locking screw, and a locking sheet which can be pushed by the locking screw and has an arc-shaped locking surface is arranged in the inner connecting sleeve. In this application, can make the connection effect of inner connecting sleeve and swivel chair pivot better through the position of locking screw regulation stay, guarantee the result of use of chair.

Preferably, the inner wall of the inner connecting sleeve is provided with an accommodating groove matched with the locking piece. The holding groove is arranged to prevent the locking sheet from interfering when the inner connecting sleeve is connected to the revolving chair rotating shaft, and the installation feasibility is ensured.

Preferably, a plurality of arc-shaped anti-skidding convex ribs are arranged on the upper surface of the outer foot-resting ring. This setting, the purpose improves the result of use of foot rest through anti-skidding bead.

Preferably, the inner connecting sleeve comprises a tapered sleeve, the tapered opening of the tapered sleeve is small at the top and big at the bottom, and the revolving chair rotating shaft comprises a tapered column matched with the tapered sleeve. This setting, the steadiness and the stability that both connect are guaranteed through the taper sleeve and the toper post of mutually supporting to in-connection adapter sleeve and swivel chair pivot, effectively are applicable to the great, the weight of child is heavier crowd, excellent in use effect.

Because the gravity centers of people with different heights are different, the positions of the optimal leg rests are different, that is, the positions of the inner connecting sleeves in the vertical direction are different, so that the height positions of the inner connecting sleeves need to be adjusted by people with different heights, preferably, the conical sleeve comprises a sleeve body, a hydraulic cavity filled with liquid and arranged in the sleeve body, a plurality of extrusion cavities which are formed in the inner wall of the sleeve body and communicated with the hydraulic cavity, extrusion balls which are arranged in each extrusion cavity and can be partially exposed out of the extrusion cavities, sliding push plates arranged in the corresponding extrusion cavities, connecting rods connecting the sliding push plates and the corresponding extrusion balls, a first limiting block and a second limiting block which are arranged in each extrusion cavity and are positioned at two sides of the sliding push plates and used for limiting the sliding positions of the sliding push plates, and a punching head and a discharging liquid are further arranged on the sleeve body, A catheter connected with the flushing head and a syringe connected with the catheter. In the application, a certain amount of liquid such as water is reserved in the injection tube, when the position of the inner connecting sleeve needs to be lowered, a human body sits on a chair, the flushing head is opened to enable the liquid in the hydraulic cavity to flow out through the liquid guide tube, the flushing head is closed until the inner connecting sleeve descends to be suitable for a foot rest, when the position of the inner connecting sleeve needs to be raised, the human body leaves the chair, firstly, the conical sleeve and the conical column are separated, the separation mode can be a mode of pulling the chair seat of the chair, and can also be a mode of enabling the liquid in the hydraulic cavity to flow out through the liquid guide tube by opening the flushing head, after the conical sleeve and the conical column are separated, the injection tube is controlled to inject the liquid into the hydraulic cavity, the extrusion ball in the extrusion cavity moves outwards, the extrusion ball moves to a suitable position, the injection is stopped, and the flushing head is closed, and the human body can sit down.

This application, no matter make taper sleeve and conical column separation through the mode of pulling the chair seat support, still make the mode that the liquid in the hydraulic pressure chamber flowed through the catheter through opening the flushing head, the operation is all comparatively simple, if make taper sleeve and conical column separation through the mode of pulling the chair seat support, because taper sleeve and conical column realize connecting through the squeeze bulb, area of contact is relatively less, frictional force is also relatively less, taper sleeve and conical column can comparatively speaking separate easily, if make the mode that the liquid in the hydraulic pressure chamber flowed through the catheter through opening the flushing head make taper sleeve and conical column separation, it is simpler to operate. In addition, the larger the weight of the used crowd is, the better the connecting effect of the inner connecting sleeve and the revolving chair rotating shaft is, the better the stability is, the good overall strength is achieved, the using effect of the chair is relatively good, the connecting performance of the inner connecting sleeve and the revolving chair rotating shaft can be kept after the position of the inner connecting sleeve is frequently adjusted, and the using effect of the chair is guaranteed.

Preferably, a plurality of the extrusion cavities form a plurality of extrusion cavity distribution layers in the vertical direction.

Preferably, the connecting rod is in ball joint with the squeezing ball through a joint.

In conclusion, the invention has the following beneficial effects:

the product is effectively suitable for people with large children and heavy weight, and has the advantages of good overall strength, good use effect and the like;

the height can be conveniently adjusted;

the bigger the used weight of the crowd is, the better the connecting effect of the inner connecting sleeve and the rotating chair rotating shaft is, the better the stability is, the good overall strength is achieved, the using effect of the chair is relatively good, the connecting performance of the inner connecting sleeve and the rotating chair rotating shaft can be kept after the position is frequently adjusted, and the using effect of the chair is guaranteed.

Drawings

FIG. 1 is a schematic, diagrammatic illustration of the structure of a swivel chair footrest in an embodiment of the present invention;

FIG. 2 is a detailed view of a footrest of the swivel chair;

FIG. 3 is a schematic view showing the connection between the inner joint sleeve and the swivel shaft of the swivel chair according to embodiment 2.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings.

Example 1: as shown in fig. 1, a high strength swivel chair footrest frame comprises an inner connecting sleeve 2 connected with a swivel chair rotating shaft 1, an outer footrest ring 3 coaxially arranged with the inner connecting sleeve 2, a plurality of reinforcing ribs 4 connected with the inner connecting sleeve 2 and the outer footrest ring 3, wherein the inner connecting sleeve 2, the outer footrest ring 3 and the plurality of reinforcing ribs 4 are integrally formed. Compared with the prior art, this application, in-connection cover 2, outer leg rest 3 and a plurality of strengthening rib 4 integrated into one piece, the bulk strength is high, is effectively applicable to the great, the weight of son crowd heavier, excellent in use effect.

Preferably, as shown in fig. 2, a locking screw 21 is disposed on the inner connecting sleeve 2, and a locking plate 23 having an arc-shaped locking surface 22 and capable of being pushed by the locking screw 21 is disposed in the inner connecting sleeve 2. In this application, can adjust the position of stay 23 through locking screw 21 and make the linkage effect of inner connecting sleeve 2 and swivel chair pivot 1 better, guarantee the result of use of chair. The preferred, locking screw 21 with stay 23 connects through a connecting piece, the connecting piece is including establishing the connection circle axle of locking screw 21 tip, correspond to establish adapter sleeve on the stay 23, establish snap ring on the connection circle off-axial periphery, set up on the adapter sleeve inner wall with the ring groove of snap ring looks adaptation, this setting, snap ring and ring groove mutually support, can take place relative rotation between the two for locking screw 21 can not drive the stay 23 rotatory when precession or screw-out, and stay 23 only is linear motion, guarantees the normal clear of locking.

Preferably, the inner wall of the inner connecting sleeve 2 is provided with a receiving groove 24 matched with the locking piece 23. The accommodating groove 24 is provided to prevent the interference of the locking piece 23 when the inner connecting sleeve 2 is connected to the rotary shaft 1 of the swivel chair, thereby ensuring the installation feasibility.

Preferably, a plurality of arc-shaped anti-slip ribs 31 are arranged on the upper surface of the outer foot-rest ring 3. This arrangement is intended to improve the use effect of the foot rest by the anti-slip projected ridges 31.

Example 2: in contrast to embodiment 1, as shown in fig. 3, the inner connecting sleeve 2 includes a tapered sleeve 25, the tapered opening of the tapered sleeve 25 is smaller at the top and larger at the bottom, and the swivel chair spindle 1 includes a tapered post 11 engaged with the tapered sleeve 25. This setting, the steadiness that both connect is guaranteed through toper cover 25 and toper post 11 of mutually supporting to in-connection cover 2 and swivel chair pivot 1, is effectively applicable to the great, the heavy crowd of weight of individual, excellent in use effect.

Since the centers of gravity of persons of different heights are different and the positions of optimal footrests are different, that is, the positions of the inner connecting sleeve 2 in the vertical direction are different, it is desirable that the height positions of the inner connecting sleeve 2 are adjusted by persons of different heights, preferably, the tapered sleeve 25 includes a sleeve body 251, a liquid-filled hydraulic chamber 252 provided in the sleeve body 251, a plurality of pressing chambers 253 opened on the inner wall of the sleeve body 251 and communicating with the hydraulic chamber 252, pressing balls 254 provided in each of the pressing chambers 253 and partially exposed to the pressing chambers 253, sliding push plates 255 provided in the corresponding pressing chambers 253, connecting rods 256 connecting the sliding push plates 255 and the corresponding pressing balls 254, first and

second stoppers

257 and 258 provided in each of the pressing chambers 253 on both sides of the sliding push plates 255 for defining the sliding positions of the sliding push plates 255, the sleeve 251 is further provided with a flushing head 250 for flushing and discharging liquid, a liquid guide tube 2501 connected with the flushing head 250, and a syringe 2502 connected with the liquid guide tube 2501. In the present application, a certain amount of liquid such as water is reserved in the injection tube 2502, when the position of the inner connecting sleeve 2 needs to be adjusted down, a human body sits on the chair, and the flushing and releasing head 250 is opened to enable the liquid in the hydraulic cavity 252 to flow out through the liquid guide tube 2501 until the inner connecting sleeve 2 descends to a position suitable for putting a leg, the flushing and releasing head 250 is closed, when the position of the inner connecting sleeve 2 needs to be adjusted up, the human body leaves the chair, firstly the conical sleeve 25 and the conical column 11 are separated, the separation mode can be a mode of pulling the chair seat, or a mode of enabling the liquid in the hydraulic cavity 252 to flow out through the liquid guide tube 2501 by opening the flushing and releasing head 250, after the conical sleeve 25 and the conical column 11 are separated, the injection tube 2502 is controlled to inject the liquid into the hydraulic cavity 252, so that the squeeze ball 254 in the squeeze cavity 253 moves outwards, and when the squeeze ball 254 moves to a proper position, the injection and the flushing and releasing head 250 is stopped, the human body can be seated. In the application, regardless of the separation of the taper sleeve 25 and the taper column 11 by pulling the chair seat, or the separation of the taper sleeve 25 and the taper column 11 by opening the flushing head 250 to make the liquid in the hydraulic cavity 252 flow out through the liquid guide tube 2501, the operation is simple, if the separation of the taper sleeve 25 and the taper column 11 is made by pulling the chair seat, because the connection of the taper sleeve 25 and the taper column 11 is realized through the squeezing ball 254, the contact area is relatively small, the friction force is relatively small, the taper sleeve 25 and the taper column 11 can be relatively easily separated, if the separation of the taper sleeve 25 and the taper column 11 is made by opening the flushing head 250 to make the liquid in the hydraulic cavity 252 flow out through the liquid guide tube 2501, the operation is simpler. In addition, the larger the weight of the used crowd is, the better the connecting effect of the inner connecting sleeve 2 and the revolving chair rotating shaft 1 is, the better the stability is, the good overall strength is ensured, the using effect of the chair is relatively good, and the connecting performance of the inner connecting sleeve and the revolving chair rotating shaft can be kept after the position is frequently adjusted, so that the using effect of the chair is ensured.

Preferably, a plurality of the extrusion cavity 253 forms a plurality of extrusion cavity distribution layers in a vertical direction.

Preferably, the connecting rod 256 is ball-hinged by a hinge 259 and the squeeze ball 254.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.

Claims

1. A high-strength swivel chair footrest frame is characterized by comprising an inner connecting sleeve (2) connected with a swivel chair rotating shaft (1), an outer footrest ring (3) coaxially arranged with the inner connecting sleeve (2), and a plurality of reinforcing ribs (4) connected with the inner connecting sleeve (2) and the outer footrest ring (3), wherein the inner connecting sleeve (2), the outer footrest ring (3) and the plurality of reinforcing ribs (4) are integrally formed; the inner connecting sleeve (2) comprises a conical sleeve (25), the conical opening of the conical sleeve (25) is small at the top and large at the bottom, and the revolving chair rotating shaft (1) comprises a conical column (11) matched with the conical sleeve (25); the conical sleeve (25) comprises a sleeve body (251), a hydraulic cavity (252) which is arranged in the sleeve body (251) and is filled with liquid, a plurality of extrusion cavities (253) which are arranged on the inner wall of the sleeve body (251) and communicated with the hydraulic cavity (252), an extrusion ball (254) which is arranged in each extrusion cavity (253) and can be partially exposed out of the extrusion cavity (253), a sliding push plate (255) which is arranged in the corresponding extrusion cavity (253), a connecting rod (256) which connects the sliding push plate (255) and the corresponding extrusion ball (254), a first limiting block (257) and a second limiting block (258) which are arranged in each extrusion cavity (253) and are positioned at two sides of the sliding push plate (255) and used for limiting the sliding position of the sliding push plate (255), and a flushing and releasing head (250) used for flushing and releasing liquid, and a liquid guide tube (2501) connected with the flushing and releasing head (250) are further arranged on the sleeve body (251), A syringe (2502) connected to the catheter (2501).

2. A high strength swivel chair footrest according to claim 1, characterized in that the outer footrest ring (3) is provided with a plurality of arc-shaped anti-slip ribs (31) on its upper surface.

3. A high strength swivel chair footrest according to claim 1, characterized in that a plurality of said crush chambers (253) form a plurality of crush chamber distribution layers in the vertical direction.

4. A high strength swivel chair foot rest according to claim 1, characterized in that the link (256) is ball hinged by a hinge joint (259) and the squeeze ball (254).