CN208473455U - A kind of antitheft opening mechanism of door lock - Google Patents

Abstract

The utility model relates to a kind of antitheft opening mechanisms of door lock, including lock head component, interior handle and square shaft, circular through-hole is equipped in the handle cylinder of interior handle, inner wall along handle cylinder inner via hole is equipped with two symmetrical axial grooves, through-hole and button sliding match, the two sides that outer, button the inner end of handle cylinder is stretched out in the outer end of button are respectively equipped with the outer fixture block in the axial groove of handle cylinder, two lateral extents of the distance between two outer fixture blocks and square shaft, which slide, to match, two outer fixture blocks are located at square shaft two sides when button and square shaft are connected, and spring is equipped between button and square shaft.Button two outer fixture block under the action of the spring is separated with square shaft under normal conditions, handle in rotating at this time, interior handle drives button idle running and cannot unlock, with hand by the outer end of button to internal pressure when overcome button slid inward after the elastic force of spring, two outer fixture blocks are made to clamp the two sides of square shaft, rotational handle at this time, handle cylinder passes through square axial groove, outer fixture block drives square shaft rotation, and square shaft drives lock tongue to unlock.

Description

A kind of antitheft opening mechanism of door lock

Technical field

The utility model relates to a kind of antitheft opening mechanisms of door lock.

Background technique

Existing door lock includes lock core, lock head component and inside and outside handle, and wherein lock core and lock head component are separately fixed at door On, outer handle is mounted on the outside of door, and interior handle is mounted on the inside of door and is joined by square shaft and lock tongue, generally all opened on door Equipped with for observing dynamic opal outdoors in door, cause thief can be after destroying opal outdoors with works such as rope or iron wires Door is opened interior handle pull-up after so that rope or iron wire is entangled interior handle, anti-theft performance is low by tool after opal protrudes into.

Summary of the invention

Purpose of the utility model is to solve the low problems of anti-theft performance present in existing door lock, and provide one kind The antitheft opening mechanism of the simple door lock of structure.

Purpose of the utility model is realized as follows: a kind of antitheft opening mechanism of door lock, including lock head component, interior handle And square shaft, wherein described interior handle one end is equipped with handle, the other end is equipped with handle cylinder, the square shaft is mounted in the lock head component And be connected with lock tongue, it is equipped with circular through-hole in the handle cylinder of the interior handle, the inner wall along the handle cylinder inner via hole is equipped with two Symmetrical axial groove, the through-hole and button sliding match, and the interior of outer, the described button of the handle cylinder is stretched out in the outer end of the button The two sides at end are respectively equipped with the outer fixture block in the axial groove of the handle cylinder, the distance between two outer fixture blocks and the square shaft Two lateral extents slide and match, two outer fixture blocks are located at the square shaft two when the button and the square shaft are connected Side is equipped with spring between the button and the square shaft.The button is under the action of the spring described in two under normal conditions Outer fixture block is separated with the square shaft, rotate at this time in handle, interior handle drives the button idle running and cannot unlock, will be by with hand Button slid inward after the elastic force of the spring is overcome when the outer end of button is to internal pressure, and described two outer fixture blocks is made to clamp the square shaft Two sides, rotational handle at this time, the handle cylinder drives the square shaft rotation, square shaft band by the axial groove, the outer fixture block Dynamic lock tongue is unlocked.

Through-hole three in the square shaft, the button and the handle cylinder is located on same axis.

Due to using technical solution described in the utility model, even if thief will be interior using tool by the opal on door Handle rotating can not open door, improve the anti-theft performance of door lock, and the structure is simple, at low cost.

Detailed description of the invention

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is the stereochemical structure schematic diagram of antitheft opening mechanism one embodiment of door lock described in the utility model.

Fig. 2 is the orthographic projection view of interior another angle of handle in Fig. 1.

Perspective view when Fig. 3 is in the through-hole for be just packed into the button in Fig. 1 interior handle.

Fig. 4 is by the perspective view after the through-hole in the square shaft load map 3 in Fig. 1.

Fig. 5 be in Fig. 1 each assembling parts together after stereoscopic schematic diagram after cylinder handle cut-out.

Fig. 6 is the stereoscopic schematic diagram of another angle of Fig. 5.

Fig. 7 is the stereoscopic schematic diagram after the button in Fig. 5 is pressed inwardly.

1, lock head component in figure, 11, square shaft, 2, button, 21, outer end, 22,23, outer fixture block, 3, interior handle, 31, handle, 32, handle cylinder, 33, through-hole, 34,35, axial groove.

Specific embodiment

See Fig. 1, the antitheft opening mechanism of the door lock, including lock head component 1, interior handle 3 and square shaft 11, interior 3 one end of handle It is equipped with handle cylinder 32 equipped with handle 31, the other end, square shaft 11 is mounted in lock head component 1 and is connected with lock tongue (being not drawn into figure) (axis connection) is equipped with circular through-hole 33 in the handle cylinder 32 of interior handle, and the inner wall of through-hole 33 is equipped with two symmetrically along handle cylinder Axial groove 34 and 35 (as shown in Figure 2), through-hole 33 and the sliding of button 2 match, and it is outer (referring to figure that handle cylinder is stretched out in the outer end 21 of button 5), the two sides of inner end are respectively equipped with the outer fixture block 22 and 23 (referring to Fig. 5, Fig. 6 or Fig. 7) in the axial groove of handle cylinder, button Spring is equipped between 2 and square shaft 11.

See Fig. 2, the outer end of button is first packed by when installation along the through-hole inner end of interior handle handle cylinder, make two on button it is outer Fixture block 22 and 23 is located in two axial grooves of through-hole wall, between the outer fixture block 22 and 23 of meeting of then entrusting outside two into Fig. 3 It is put into spring (being not drawn into the spring in each figure of the present embodiment), then the square shaft in Fig. 1 is packed into, as shown in figure 3, continuing at this time Square shaft 11 is pushed away in the through-hole for making button be moved fully into handle cylinder to handle cylinder direction, finally refills the lock head component in figure 1 above (as shown in Figure 5).

In conjunction with Fig. 5 and Fig. 6, it is seen then that under normal conditions in the case where spring force is without effect, the outer end 21 of button is stretched outside handle cylinder, button The outer fixture block 22 and 23 of two of inner end is separated with square shaft 11, and then handle drives button idle running and cannot open rotational handle 31 at this time Lock, only by the outer end of button 21 to internal pressure (elastic force for overcoming spring) to state shown in Fig. 7, the two of button inner end are outer at this time Fixture block 22 and 23 is located at the two sides of square shaft 11, and rotational handle 31 can make handle cylinder pass through two axis on through-hole wall at this time Two outer fixture blocks on slot and button drive square shaft rotation, to drive lock tongue mobile and unlock.

Claims (2)

1. a kind of antitheft opening mechanism of door lock, including lock head component, interior handle and square shaft, wherein described interior handle one end is equipped with hand Handle, the other end are equipped with handle cylinder, and the square shaft is mounted in the lock head component and is connected with lock tongue, it is characterised in that hold in described The handle cylinder of hand is equipped with circular through-hole, is equipped with two symmetrical axial grooves along the inner wall of the through-hole, the through-hole and button are sliding Dynamic to match, the two sides that the inner end of outer, the described button of the handle cylinder is stretched out in the outer end of the button are respectively equipped with positioned at the handle cylinder Axial groove in outer fixture block, two lateral extents of the distance between two outer fixture blocks and the square shaft, which slide, to match, the button Spring is equipped between the square shaft.

2. the antitheft opening mechanism of door lock according to claim 1, it is characterised in that the square shaft, the button and the handle cylinder In through-hole three be located on same axis.