SU1745848A1 - Door latch - Google Patents

Abstract

The invention relates to staples, in particular to door mortise locks, and makes it possible to improve performance. The latch contains a bolt spring-loaded with a spring located in the assembly housing, transverse segmental grooves are made in the crossbar, and thrust elements on the side surfaces, cores mounted coaxially with each other, one of which is rigidly connected to the outer handle. with inner handle. The cams are mounted on the cores, respectively, with one cam mounted with the ability to interact with the through transverse segment groove of the bolt. Inside the inner handle there is a stem, spring loaded springs: Hur fixed control rod element has a length not exceeding the length of the core 7 internal handle yl

Description

The invention relates to staples, in particular to door mortise locks, and can be widely used for interior doors of apartments in residential buildings and individual rooms of industrial premises.

The purpose of the invention is to improve performance.

Fig. 1 shows a lock, a cross-section (a door is conventionally depicted with dash-dotted lines); FIG. 2 is a section A-A in FIG. 1 in the closed position, in FIG. 3 shows section A-A in FIG. 1 in the open position; in fig. 4 shows a section BB in FIG. 1, FIG. 5 is a section B-B in FIG. 1, in FIG. 6 - lock, cross section, another version of its assembly; in fig. 7 - section G-Y in FIG. 6

The latch contains a bolt 2 located in the assembly case 1, spring-loaded with a spring 3, through transverse segmental grooves 4 are made in the transom on its two sides, and on the side surfaces - stop elements in the form of a pin 5 pressed in the transom, cores 6 and 7 mounted coaxially each other, one of them is rigidly connected with the outer handle 8, and the other with the inner handle 9 of the lock. Cams 10 and 11, respectively, are installed on the cores 6 and 7, and the cam 10 is set to interact with the stop element 5. And the cam 11 is made at a segment and installed with the possibility of interaction with a through transverse segmental groove 4 bolts and the outer and inner handles are installed in identical platbands 12. Inside the inner handle 9 there is a locking device made in the form of a rod 13 of a shaped (in this case square) section, spring-loaded spring 14 and with a control element fixed at its outer end in the form of an additional

00

00

uchki 15, cores 6 and outer and inner handles are provided with each additional shaped hole 16, in which simultaneously the rod 13 is located with its own shaped (square) end, each of the platbands 12 of both handles has a half-washer 17 rigidly attached to it, which interact with ring grooves 18 on the respective cores of the handles. A longitudinal groove 19 is made on the cam 10, in which a stop element (pin) 5 is placed. The core 6 is additionally spring-loaded with a spring 20 so that the cam 10 is always pressed to the axis 21, which Odita through bolt through its groove 22 and is rigidly secured to the housing. In the core of the outer handle, a central shaped hole 23 is also made of square cross section in order to allow for the forced opening of the lock locked from the inside.

The lock works as follows.

To open the door from the outside, push down the outer handle 8, through the core 6, force is transmitted to the cam 10, which is hooked onto the stop 5. Retracts the bolt 2 to the inside of the lock, overcoming the resistance of the springs 3 and 20. The bolt movement is limited by the axis 21 in the groove 22.

To open the door from the inside, the inner handle 9 is pressed. In this case, since the core 7 is rigidly connected in the circumferential direction with the core 6 by means of the rod 13, entering with its square end into the openings 16 of both cores, the further process of opening the lock is similar.

To lock from the inside, it is necessary to pull the knob 15 overcoming the force of the spring 14 until the square part of the rod 13 leaves the interaction with the hole 16 of the core 6, as a result of which the rigid connection between the cores is interrupted and the inner handle 9 is rotated 90 ° until the new rod 13 comes the hole 16 of the core 6, As a result of this rotation, the cam 11 will enter the recess 4 of the transom 2 and block it, i.e. it is impossible to open the door from the outside by pushing the outer handle 8, as bolt 2 has lost its ability to move.

To force the door to open from the outside, you need to use a special key (not shown), which is a long round thin rod, at the end of which a shaped section (square) of small length is made. This key is inserted into the hole 23 and the rod 13 is pushed inside until the square part of the key goes into the cam 10 or even further into the core 7, thereby breaking the connection of the cores. Then

turn the inner handle 9 to the initial horizontal position with a key and, pressing on the outer handle 8, open the door.

To open a locked door from the inside, you need to pull handle 15, pull handle 9 to its original horizontal position, and, releasing handle 15, push handle 9 down.

Making the latch makes it possible to close the door by slamming, holding any of the handles 8 or 9. In this case, the bolt 2 goes inside the housing 1, extending only the spring 3, the passage with its abutment 5 inside the groove 19, i.e. do not interact with the cam 10, therefore, the blow to the hand holding the handle does not occur.

An introduction to the half-washer design 17 makes it easy to set the latch on

5, a door of any thickness, in order to allow the cores to interact with the cams 10 and 11 of the lock, on the outer diameter of the cores 6 and 7 is made of a series of arranged annular

0 grooves 18, in one of which the half-washers 17 are installed, fixing axially 6 and 7 cores relative to the frames 12 in the axial direction.

FIG. 1-5 shows the latch for

5 doors opening from the left side to the outside, however the same latch can also be used for doors opening from the left side inwards. To do this, disassemble the latch, turn the bolt 2 and

0 rearrange the pin to which the spring 3 is attached to the crossbar. The position of the remaining parts does not change.

FIG. Figures 6 and 7 show an assembly for doors opening from the right side to the outside. The difference is only in the performance of the assembly. The operation of this variant in all its modes is carried out in a similar way.

High operational capabilities are due to the fact that it is easier to install the latch on the door and its handles have a small axial play. Also, operational capabilities have increased due to the fact that the translation of the inner handle

5 upwards for locking is carried out strictly at 90 °, i.e. it no longer lies on the door braid, and it is convenient to use it.

The reliability of locking the door also increases, as the handle 9 in the locked position is rigidly fixed by the current 13.

Claims (1)

Invention Formula The door latch, containing the outer and inner handles interconnected by means of a square rod, placed with the possibility of longitudinal movement in the core hole of the internal handle and placing in the core of the external handle having a square cross section, deadbolt mounted on the stem of the inner handle coaxially with the core, cam for bolt control and locking tool 0 rotation of the outer handle, including a spring-loaded control element rigidly connected to the stem, characterized in that, in order to improve performance, it is equipped with an additional cam mounted on the stem coaxially with the outer handle core, the stem has a length not exceeding the length of the core the inner handle, and is mounted for movement in the direction of the inner handle when unlocked, and the control element is spring-loaded towards the outer handle. 9 Yu fuZ 3 with h so w t rkv. s V y-t-UU Y / with t with y THU z19S gd