SU1730411A1 - Mortise door lock - Google Patents

Abstract

The invention relates to locking devices, namely, mortise locks, and allows for improved usability. The mortise lock contains a housing, a lock-latch with a shank mounted in it, which is connected by means of a leash with handles. The leash interacts with the cam, which has a radial protrusion for interacting with the latch shank in the locked position of the lock and ensuring its automatic opening. 4 il.

Description

The invention relates to locking devices, namely, mortise locks for closing doors from the inside of bathrooms and toilets.

The purpose of the invention is to improve the usability.

Figure 1 shows the door lock in the open position, a longitudinal section; figure 2 - the same, in the closed position; on fig.Z - section aa in figure 1; figure 4 - view B in fig.Z.

The mortise lock contains spring-loaded latch 2 with shank 3 located in housing 1 (Fig. 1) and latch 2 movement mechanism including a driver 4 with protrusions 5 and 6 connected by means of a rotary axis 7 with control handles 8 and 9. The protrusion 5 communicates with the shank 3 of the latch 2 by a spring-loaded spring 10, and the second protrusion 6 is provided with a support 11 (FIG. 3), which communicates at one end 12 with a torsion spring 13, which rests with the other end 14 in rack 1 of the housing 1.

the third protrusion 16 (figure 2), formed by an arcuate recess 17, the radius of which corresponds to the radius of the sector protrusion 18 of the cam 19 of the locking mechanism.

The cam 19 is controlled by a shift knob 20 and has a notch 21 for securing the cam 4 with the knobs 8 and 9 to the Closed position, while the washer 22, rigidly connected to the cam 19, has two faces 23 and 24 (Fig. 4), which are made relative to each other at an angle of 120 ° for contact with one end 25 of the torsion fixing spring 26. The other end 27 of the torsion of the retaining spring 26 rests on the edge of the housing 1. The retaining spring 26 of the torsion is mounted on the post 15 of the housing 1. The handle 20 controls the cam with the washer using a rod 28 that is installed in the central opening 29 For automatically opening the lock with a latch 2 with the shank 3, the cam 19 has a radial protrusion 30 (FIGS. 1 and 4), which interacts with the protrusion 31 (FIG. 1) formed on the shank 3 of the latch 2.

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The door lock works as follows.

In the closed position, the cam 19 (Fig. 2) interacts with the surface and the protrusion 16 of the driver 4, while the arcuate recess 17 contacts the sector protrusion 18. To ensure fixing, one end 25 of the fixing spring 26 rests on the face 23 (Fig.4) of the washer 22 Due to the strength of the locking spring 26 and at an angle of 120 ° (FIG. 4) of the faces 23 and 24 relative to each other, rigid fixation of the handles 8 and 9, i.e. outside it is impossible to open the door.

When the lock is opened (Fig. 1), the locking clutch 19 is rotated clockwise using the handle 20 (Fig. E), while the end 25 of the fixing spring 26 rests on the face 24 of the washer

22

You can turn the handles 8 and 9 down. At the same time, the leash 4 is moved and, with the aid of the protrusion 5, the latch 2 with the shank 3.

The door can be opened. When hands are removed from handle 8 or 9 and due to the force of the springs 10 and 13, the latch 2 s

the shank 3 and the handles 8 and 9 are moved to the initial position.

If necessary, you can open the lock from the outside with a screwdriver through the hole

in the outer pad of the lock (not shown),

which coincides with the hole 29 (figure 2).

When opening the lock with a handle 20

(fig.Z) and at the same time a door with a handle 8,

in the open position, it is possible to touch in time, turning the handle 20 to the closed position, which closes the handles 8 and 9,

When the door is slammed, the radial projection Z O of the cam 19 contacts the protrusion 31 (FIG. 2). By pressing the latch 2 into the case 1 of the lock, the protrusion 31 pushes the protrusion 30 from the locking clutch 19 from the closed position to the open position, i.e. you can turn the handles 8 and 9, the lock is open.

Claims (1)

Invention Formula Door mortise lock auth.St. No. 1647112, characterized in that, in order to improve usability, the cam is provided with a radial protrusion for contacting the latch shank in the closed position of the lock. 1 S.9 M 54 N S Ј 0 0 sj cs csj Fig.Z In id 5 FIG L