Office chair seat with adjustable tilt angle

Abstract

The utility model relates to a chair seat mechanism mountable between a seat and a base of a chair, and can be used in the furniture industry, in particular in the production of office chairs that permit adjustment of the tilt angle of the seat. An office chair seat with an adjustable tilt angle includes a frame comprised of two parts between which a soft material is stretched and to which a first and a second support are attached via blind bushings by means of a screw connection, wherein mounted to each end of the first support are lugs, through the holes of which a handle is passed, said handle having oval plates non-detachably fastened thereto, the oval plates being situated beside the lugs and having holes into which is inserted a shaft with two longitudinal plates fastened to the ends thereof, said longitudinal plates connecting the first and second supports and being provided with holes for fastening the frame to the base of the chair by means of a bolted connection.

Description

[0001] Office chair seat with adjustable tilt angle

[0002] The utility model relates to a device for a chair seat, installed between the seat and the base of the chair, and can be used in the furniture industry, in particular in the production of office chairs that provide adjustment of the seat angle.

[0003] A device is known for adjusting the height and tilt of a vehicle seat, comprising a cushion connected to a frame, and a seat base provided with plates with slots interacting with spring-loaded locks made in the form of curved and crank-shaped rods forming handles, pivotally fixed to the frame, and an intermediate frame is pivotally mounted between the base and the frame of the seat cushion, the axes of said hinges are located in the longitudinal plane of the seat, and the locks are provided with hooks, wherein the handles of the locks are located at the ends of said rods (author's certificate SU1044490A, IPC B60N 1 / 06, published on 30.09.1983).

[0004] The disadvantage of this device is its inconvenience in operation and bulky design.

[0005] A device is known for changing the angle of the seat of a chair, suitable for connecting it between the seat and the chair support, containing two three-arm double-hinged elements of different sizes, wherein each three-arm double-hinged element contains a lower outer arm intended for fastening to the chair support, a lower hinge, a middle arm, an upper hinge and an upper outer arm intended for fastening to the seat through fastening adapters, and also containing a curved plate for lifting the chair gas lift adjustment lever, wherein the outer arms of each three-arm double-hinged element are made of a profile pipe, and the hinges are made in the form of screw-nut pairs (patent RU220749U1, IPC A47C 7 / 14, published 02.10.2023).

[0006] The disadvantage of this device is its complexity and inconvenience in operation.

[0007] The objective and technical result of the utility model is to create a simple, easy-to-use office chair seat with an adjustable tilt angle.

[0008] The specified problem is solved by an office chair seat with an adjustable tilt angle, including a frame made of two parts, between which a soft material is stretched, with the first and second supports fixed to them through blind bushings by means of a screw connection, wherein on the first support at both ends there are lugs, through the holes of which a handle is threaded, to which oval plates with holes are fixed inseparably next to the lugs, into which an axis is installed with two longitudinal plates fixed to its ends, connecting the first and second supports, and on the longitudinal plates there are holes for fixing the frame to the base of the chair by means of a bolted connection.

[0009] The essence of the utility model is explained by a drawing, which shows the design of an office chair seat with a unit for adjusting its angle of inclination.

[0010] The seat of the office chair includes a frame 1 made of two parts, between which a soft material is stretched (not shown in the drawing). On the said parts of the frame, the first 3 and second 4 supports are fixed through blind bushings 2 by means of a screw connection to form a rigid structure. On the first support 3, lugs 5 are installed at both ends, through the holes of which a handle 6 is threaded, to which oval plates 7 with holes in which an axis 8 is installed are inseparably fixed near the lugs. Two longitudinal plates 9 are inseparably fixed at the ends of the axis 8, connecting the first and second supports. Holes are made on the longitudinal plates for fastening the seat to the base of the chair by means of a bolted connection (not shown in the drawing).

[0011] The handle 6 with the axis 8 fixed to it form a unit for adjusting the angle of the front part of the seat. When the handle 6 is turned, the oval plates 7 rotate, changing the angle between the seat frame 1 and the longitudinal plates 9 fixed to the base of the chair.

[0012] The proposed design of the chair seat with a tilt angle adjustment unit is simple and reliable, and is easy to use.

Claims

Utility model formula An office chair seat with an adjustable tilt angle, including a frame made of two parts, between which a soft material is stretched, with the first and second supports secured to them through blind bushings by means of a screw connection, wherein on the first support at both ends there are lugs, through the holes of which a handle is threaded, to which oval plates with holes are permanently secured next to the lugs, into which an axle is installed with two longitudinal plates secured to its ends, connecting the first and second supports, and on the longitudinal plates there are holes for securing the frame to the base of the chair by means of a bolted connection. SUBSTITUTE SHEET (RULE 26)

Images