RU19696U1 - ADJUSTABLE HINGE ASSEMBLY OF LADDER ELEMENTS - Google Patents

Abstract

An adjustable swivel connection of the elements of the ladder containing a hinge, characterized in that the hinge has at least two degrees of freedom.

Description

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Adjustable articulated stairs.

The inventive adjustable swivel elements of the stairs relates to construction, namely the manufacture of stairs.

A hinge (from the German Scharnier, from the French charniere, from the Latin cardo (cardinis) - door hinge) is a movable connection of parts that can only be rotated around a common axis or common point (Polytechnical Dictionary, Moscow, Soviet Encyclopedia, p. 560).

A typical example of a hinge with one degree of freedom is a door hinge.

Other examples of articulated joints with three degrees of freedom are ball bearings (A.S.SSSR No. 556256, F 16 C 29/06, 1979; A.S.SSSR No. 609679, F 16 C 29/06, 1979).

The closest device selected as a prototype is an adjustable swivel connection of the elements of the stairs, namely the railing with a support column, containing a hinge with one degree of freedom (Patent

E 06 C 7/50 connection elements

- -2Germany No. DE 39 20 260 C2, E 04 F 11/18, 1999). The device is a bracket, which is the first link of the hinge, mounted on the lower side of the railing, and having a flat groove located parallel to the axis of the railing. A protrusion of the upper end of the strut, which is the second link of the hinge, is inserted into the groove. The hinge axis, made in the form of a standard screw, is perpendicular to the groove plane. Thus, during installation, the support has the ability to rotate in a plane passing through the rack and railing in order to adjust their location. After adjustment, the axial screw is tightened and the selected position is fixed.

The author’s technical task was to create an adjustable swivel connection of the staircase elements, which allows to adjust the location of the staircase elements not only in one plane, but also in three-dimensional space. To achieve the specified technical result, the hinge has at least two degrees of freedom due to the fact that the device is additionally equipped with one or more additional hinge joints, the axes of which are located at an angle to each other.

The claimed hinges connect the elements of the stairs, namely, the handrail with the support rack, the elements of the handrail to each other, the racks to the bowstring, the steps to the kosour, prokids (parallel elements) between themselves and to the racks and other elements of the stairs. The first and last link of the hinge is attached to the elements of the ladder by a fixed connection - glue, welding, screws, etc.

Variants of the claimed technical solution are shown in the figures (Figs. 1,2, 3).

Figure 1 shows a three-link hinge consisting of a washer (1) fixed to the handrail with a screw (3), which is also the axis of rotation of the hinge formed by the washer (1) and the upper half-loop (2). The upper half-loop (2) and the lower half-loop (4) form a second articulation with the axis - the screw (5). The lower half-loop (4) and the pipe (6) form a third hinge with the axis of the screw (7). The pipe (6) is an element of the staircase. After choosing the position of the rack relative to the railing, the connection is fixed with screws (3,5) and screw (7) using the internal collet clamp (8). Of this kind

hinges are used when connecting racks with a handrail, racks with a step, racks with a bowstring, racks with prokid, prokid among themselves.

In FIG. 2 shows a four-link hinge, where the first link - the sleeve (1) is connected to the second link by a hemisphere (3) by an axis - a screw (2). The hemisphere (3) is connected to the hemisphere (5) using a screw (4), the axis of which is inclined to the axis of the screw (2). The hemisphere (3) and the hemisphere (5) have a flat connector surface inclined to the axis of the screw (2) and perpendicular to the axis of the screw (4). The hemisphere (5) is connected to the sleeve (6) using a screw - axis (7). The hinge is used to connect prokid to each other, the handrail in turns, the handrail to each other.

In Fig.3 - Fig.5 shows the manufacturing options of the bushings (1.6) of Fig.2.

Figure 4 - in the form of a glass, figure 5 - in the form of a cone.

In Fig.6 and Fig.7 shows simplified versions of the hinge without the collet connection shown in Fig.1. Designations of the elements coincide with the designations in figure 1.

The use of the claimed variants of the proposed adjustable swivel connection of the elements of the ladder can reduce the accuracy of the individual elements of the hinge, which simplifies the equipment for its manufacture, allows the use of workers with low skills. At the same time, due to the large adjustment possibilities, the installation of the entire staircase is simplified and, therefore, cheaper.

The production of the claimed hinges started by the company "Maestro (Rostov-on-Don).

Claims (1)

An adjustable swivel connection of the elements of the ladder containing a hinge, characterized in that the hinge has at least two degrees of freedom.