SU2507A1 - Device for automatic opening and closing of doors - Google Patents

Description

The present invention aims to silently open and close the door with its own weight, without touching the handle, and therefore hygiene.

FIG. 1 shows a front view of the fixture, on the fcg. 2 is a plan view, in FIG. 3 is a side view, in FIG. 4- latch, in FIG. 5 - tormaz and f; Gora; 6 - dogs for holding pads.

On both sides of the door there are two platforms consisting, for example, of a frame riveted from squares 2 and covered with an iron sheet 3 and with parquet flooring. Platforms 7 are located on tables 4 (for example, cast-iron ones), articulated by parallel planks 6, b with supports 5 and jointly lifted by the action of articulated levers 7, 8 (respectively 7, 9); Levers S and 9 are wedged on shaft 0, and the tail of lever 8 is provided with a reversible counterweight 11, which serves to maintain the platform at a certain level above the floor. The end of the tail of the lever 8 is equipped with spring-loaded tormazma 12-17 (12 - bolt / 3 - nut, 14 - washer, 15 - spring. On, 16 - guide washer and 17 - console).

From one of the plots there is an articulated ha ha 18, going to the crank 19, stuck on the shaft 20, pivotally located in bearings 21 and 22. On the shaft 20, the toothed sector 2 is wedged, coupled to the bristle 24, wedged on the shaft 25, which is pivotally rotated in bearings 26 and 27. The shaft 25 carries the lever 28, which is provided with rollers 29 on its horse. 30. Rotating freely with the roller 31; The lever 28 is missed into the slot of the box 36. The lever 28 presses the rollers 29 and 30 on the crank lever 32 rotating in the hinge 33 and connected to the latch 34 pressed 35 (the door halves are released from the clutch, one of which opens).

A person who wants to enter the door becomes free on one of the platforms, which are constantly lifted by the load and above the floor level to a height of approximately 80 to 100 mm. The weight of the person exceeds the weight of the counterweight and approximately 1 pud; under the weight of a person, the platform simultaneously and smoothly lowers to the floor level and entices the i8 bar, which transmits its movement by means of gear 21, shaft 25 and lever 28. The latter presses lever 32 to rubber 57- (for the shockbar 32 to be silent ). The last pressure of the lever 32 on the door opens it. The person entering or leaving the person moves to another site, which is also at floor level. When the second foot descends from the site, the counterweight 11, under the influence of the difference in weights (also in one pood, as compared with those freed from the human weight), lowers, lifting the platforms to the same height and closes the door with the same lever 28, which in this case slides rollers on the part 36. To adjust the door stroke and eliminate the blows, a spring brake is installed on the end of the lever 8. By moving the counterweight 77 in one direction or the other, a larger or smaller difference in weights is adjusted.

It is assumed that the weight of a teenager in 2 pounds should easily open the door; children with less weight always go with adults. Platforms 7, lowering or raising, carry with them a threshold 37, which is supported by guides 38, 39, 40 and 41; this is done for ease of passage; when lifting, a seal with a door is obtained. To lock the door from the inside, there is a pawl 42 rotating on the bolt 43. To lock the door it is necessary to kick the curved end of the pawl 42, which, rotating around the bolt 43, goes the other end into the groove of the platform and does not allow it go down (fig. 6). In order to keep the door open, it is necessary to lower the pads down and snap into place with a dog that will not allow the pads to be raised; then the door will remain open.

SUBJECT OF THE PATENT.

Device for automatic opening and closing of doors, driven by the weight of a person entering one of the moving platforms located on both sides of the door, characterized by cumulative use: a) two platforms 7 on tables 4 pivotally connected by parallel slats 6, b with racks 5 and jointly lifted by the action of a hinged lever 7, 5 with a counterweight 77 and spring-loaded brake b) articulated from one of the platforms of the rod 18, going to the crank 79 of the shaft 20 with the gear sector 23, coupled with gear 24, the shaft 25 of which A lever 28 is passed through the slot of the box 36 and provided at the end with rollers 29, 30 pressing against the crank lever 32 associated with the latch 34 pressed by the spring 35; c) a movable threshold 37, - associated with the pads 7 by means of guides 38, 39, and d) a pivoting dog 42 on a bolt 43 designed to keep the pads in a stationary state.

Tipogatogaty «Red Pechatnik, Leningrad, International, 75.

1

FIG.

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13

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15

Figl.

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37- "

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FIG. 6

FIG. five.