SU1333758A1 - Door latch - Google Patents

Abstract

The construction is related to the construction, which allows to increase the usability of the door latch. The coaxially arranged rotary outer 2 and inner 3 handles are mounted on a square rod made of outer 8 and inner 9 sections. Both areas: interact with the cam 5 when unlocking the bolt 4 latch. The inner part is provided with a button 10 and an axial movement retainer 1I, and the outer part has a groove 7 and is spring-loaded. The latch body 1 has a pad 6 with a square hole dp accommodating the groove 7 therein when the latch is unlocked from the outside. 4 il. (L with:

Description

This invention relates to locking devices.

The aim of the invention is the ease of use HTje.

Pa figs. 1 shows the latch, times. rez; in fig. 2 - the same, with the outer handle turned off; in fig. 3 is a view A of FIG. one; in fig. 4 is a view B in FIG. 2

The door latch includes a housing 1, a rotary outer 2 and an inner .3 handle, a spring-loaded bolt 4, a cam 5 with a square hole for engagement with a deadbolt when unlocking the latch J fixed on the housing a pad 6 with a square hole and mounted inside the knobs with the possibility of axial movement of a square cross-section rod having a groove 7 with the possibility of placing it in a square hole of the overlay 6 and consisting of the outer 8 and inner 9 sections, interacting respectively with the outer 2 and inner 3 handles, with it is provided with the inner part of the stem 10 rigidly fixed button and the retainer 11 axial movement. In this case, the rod is made to rotate the outer 8 part relative to the inner 9, the groove 7 is made on the outer 8 part of the stem, and the outer part of the stem is spring-loaded in the inner direction.

The latch works in the following way.

When unlocking the latch turn the inner 3 (or outer) handle in any direction. At the same time, the inner 9 (or outer 8) part of the rod and the cam 5 which is engaged with it rotate, which moves the spring-loaded bolt 4, unlocking the latch. To turn off the outer handle 2, the button 10 is pressed, while the inner part 9 of the stem outputs the outer part 8

the rod is out of engagement with the cam 5 and is fixed by the latch I of axial movement, which prevents the latch from being opened from the outside.

In this case, the outer handle is blocked from rotation, since the outer part 8 of the rod is square.

the cross section enters the square hole of the lining 6. When unlocking the latch from the inside, the latch 1 of axial movement releases the inner part 9 of the rod, while under the action of the spring, the outer part 8 of the rod is displaced and engages with the cam, and the groove 7 of the outer part 8 of the rod aligns with P 6j does not prevent unlatching the latch from the outside,

Claims (1)

Formula isobteni A door latch comprising a housing, rotatable outer and inner handles, a spring-loaded bolt, a cam with a square hole for engagement with the bolt when unlocking the latch, a pad with a square hole mounted on the housing and mounted inside the knobs with axial movement of a square rod having a groove with a possibility placing it in the square hole of the lining, and consisting of the outer and inner portions interacting respectively with the outer and inner handles, and light on the internal part of the rod is fixedly secured with a lock button axially movable, characterized in that, in order to increase ease of use, schtok is rotatable relative to the outer part internal, groove is made on the outer part of the stem, while the outer part of the stem is spring-loaded in the direction of the inner. Yu fpus.2 MA. fpus. Compiled by N. Kamsky Editor A. Dolynich Tehred M.D1Edps Proofreader E. Roshko Order 3931/26 Circulation 403Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4