SU1214898A1 - Ladder/stool combination - Google Patents

Description

i

The invention relates to the construction and household appliances and can be used for the construction of the building, as well as for the installation, finishing works in construction and for use in households.

The purpose of the invention is to improve ease of use.

FIG. Figure 1 shows schematically the proposed stool, a general view; in fig. 2 - the same, top view; in fig. 3 is a section A-A in FIG. 1.

The stool contains a base .1 connected to the base 1 by parallel guides 2 and 3, pads 4 and 5 for the legs, a rod b with supporting rails 7, mounted with a carriage along the guides 2 and 3, in the cavity of the rotor 8 with external stop thread and having means for fixing 1P1 pads 4 and 5 for legs on one level, which is made in the form of a double-faced cam 9 with a stopper, means for moving the area for the legs along the rails, containing gear racks 10 and 11, each which is installed on the corresponding the guide 12 and 13, the exciting spring-loaded levers 14 and 15, the shaft of which is connected to the footboard and interacts with the gear rack, the spring-loaded support levers 16 and 17, which are hinged with their free ends and interact with the stop thread its screw 8, and flexible pusher 18 fixed with its ends on the toothed racks 10 and 11, the plungers 19 and 20 of which are rigidly connected to the legs 4 and 5, while the toothed rails 10 and 11 are mounted for movement along the rails 2 and 3 .

The stool-stool works as follows.

Initially, the fasting stool is brought from the non-operating position to the working position. For this, the base 1 is fixed on the surface, then the bar b is extended to the desired height.

148982

By turning the cam 9, the legs 4 and 5 are disconnected and placed on them. The cam 9 is rotated to its original position above the above-mentioned 5 dock squares and, holding the handrail 7, alternately with their feet, pressing the pads 4 and 5.

0 with a pad 5 for the other leg, engaging a lever 15 under the springs, a guide 13 with a toothed rack 11 and a spring-loaded support lever 17, which with its free end interacts with a new turn of an axial thread.

Then the foot is stepped on the pad 5 for legs, the plunger 20 of the flexible pusher 18 moves the plunger 19

20 with a pad 4, gripping a spring-loaded lever 14, a guide 12 with a toothed rack 10 and a spring-loaded support arm 16, which, with its free end, interacts with another new turn of the stop thread. Above reaching a given vel1G4iny lift with their feet equalize the pressure on the pads 4 and 3, level them horizontally and fix

0 i-ix by turning the two-sided cam 9, which fits into the grooves of the pads 4 and 5.

At the end of the work, the descent of the entire moving part of the stool is described as follows. Boom 6

contains keyway with key and

turning the railing 7 with the rod 6 counter-clockwise rotates the rotor screw 8. In this case, the spring-loaded support arms 16 and 17 pop out

the role of the nut and slid down along the rotor screw 8, and together with them the means of moving the legs 4 and 5 for the legs with the platforms themselves slide down. Upon reaching the guides

12 and 13 of the base 1 push the rod 6 into the cavity of the rotor 8 along the slot and the position of the stool is used from the position of the rod.

The use of the present invention allows to minimize the occupied space during the construction of households.

Bv

(pU3j

2

17- Ills

(Puf.3

VNIIPI Order 891/46 Circulation 470 Subscription Branch PPP Patent, Uzhgorod, Proektna St., 4

Claims (2)

1. TABRET-STEPLAND, containing a base, parallel guides connected to the base, foot platforms, a bar with support rails mounted to move along the guides, and means for moving the platforms along the guides, including gear racks, each of which is mounted on the corresponding guide, exciting spring-loaded levers, each of which the ball is nirno connected to the platform and interacts with the gear rack, and the supporting spring levers associated with the gear racks, I distinguish with the fact that, in order to improve ease of use, it has a rotor connected to the base and located along the guides with an external stop thread and a cavity for holding the rod, the platform moving means contains a flexible pusher, fixed with its ends to the gear rails, the plungers of which are rigidly connected to the platforms for the legs, the support arms pivotally connected _β to the rails and interact with the thrust of the rotor with their free ends, while the gear racks are installed with the possibility moving along the guides. 2. Step-ladder on π. 1, characterized in that the bar has a means for fixing the platforms for the legs at the same level.