CN2276964Y - Cam-driving anti-theft door lock - Google Patents

Abstract

The utility model provides a cam-driving anti-theft door lock for the field of building technology, which is characterized in that a cam is adopted for directly acting on a lock pin; an anti-prying sleeve is sheathed with the lock pin; the anti-prying sleeve is in the shape of a bottle of a long-neck and is transversally arranged; the tail is exposed outside a lock body; the interior is hollow. A bolt fastened by the spring is arranged in a safe sleeve; the outer side of the lock bolt is a flat straight surface; the inner side is streamline; the lock bolt is projected out of a groove in the state of nature. Compared with the existing door lock, the utility model has the advantages of novel structure, simple structure, fastness, obvious anti-theft effect, etc.

Description

Cam drives safe-guard door lock

The utility model belongs to technical field of buildings, is that a kind of cam drives safe-guard door lock.

At present, the general safe-guard door lock of Cai Yonging, dead bolt generally is installed on the door, and the plane of dead bolt is inwards, the inclined-plane is outside, and the article that resembled identity card and so on are easily disclosed out, and the drive unit of door lock adopts plectrum driven gear and tooth bar, come execution, the utilization process is numerous and diverse, and damages easily.

The purpose of this utility model be design a kind of be not easy to be disclosed out anti-moving effective, the safe-guard door lock that drive unit is simple, firm.

Technical solution adopted in the utility model is improved on the basis of original safe-guard door lock, remove the dead bolt in original lock body, gear, change and be made as cam, original tooth bar changes the lock pin that is subjected to cam into, and lockpin sleeve is located in the anti-prying case, the external form of anti-prying case is the long-neck ampuliform, horizontally set, its cervical fixation on the lock body, afterbody is exposed to outside the lock body, afterbody laterally for streamlined, inner hollow is also offered into tongue mouth to the end.Be provided with the dead bolt of spring pretension in original condom that is installed on the doorframe, dead bolt protrudes in the groove under nature, tapered end be streamlined inclined-plane to the inside, be flat face laterally; The size of groove will be held the afterbody of anti-prying case at least, drives safe-guard door lock thereby constituted a kind of cam.

Because the utility model has been taked technique scheme, to compare with existing door lock, tapered end is disclosed out door lock very difficult outdoors in the situation of closing is set in anti-prying case, and anti-theft effect is obvious, adopts cam directly to drive simultaneously, novelty simple in structure, firm.

Below in conjunction with accompanying drawing and example specific structural features of the present utility model is described further.

Fig. 1 represents the horizontal cross-sectional schematic of general assembly of the present utility model.

Fig. 2 represents the vertical cross-sectional schematic of general assembly of the present utility model.

Fig. 3 represents cam driving gear structural representation of the present utility model.

As shown in Figure 1, the utlity model has lock body 1 and condom 2, the arranged outside of lock body 1 has lock core, and the inboard is provided with swing handle 3, and the center of rotation of the cam 4 interior external cam of outside the plectrum of lock core and swing handle 3 acts on respectively and inboard is on same straight line.Wherein the near-end garden of outside cam is provided with a part of straight string 5 (as shown in Figure 3), the housing of lock body 1 is provided with safety plug 6 simultaneously, when door lock during at locking state, press safety plug 6, safety plug 6 is plugged in outside the straight string 5, external cam can not be rotated, thereby can't open door lock with key outside.As shown in Figure 2, the far-end arc of cam 4 and lock pin 7 are inconsistent.In the lock pin 7 sheathed anti-prying cases 8, can pass in and out in anti-prying case 8, wherein lock pin 7 is circular arc cap shape with cam 4 contacted ends, and diameter is greater than the internal diameter of anti-prying case 8.

The shape of anti-prying case 8 is the long-neck ampuliform, and horizontally set, its neck are arranged on the housing of lock body 1, and afterbody is exposed to outside the lock body, afterbody be streamlined (as shown in Figure 1) laterally, inner hollow, and offer into tongue mouth 9 to the end.Lock pin 7 is entering anti-prying case 8 when the darkest, and the inner can protrude in into tongue mouth 9 or with to advance tongue mouth 9 equal.

Be provided with the dead bolt 10 of spring pretension in the condom 2, dead bolt 10 be flat face laterally, be streamlined inclined-plane (as shown in Figure 1) to the inside, dead bolt 10 protrudes under nature in the cavity of groove 11, and the size of groove 11 will be held the afterbody of anti-prying case 8 down at least.

When door opened and closed, the streamlined inclined-plane of the afterbody of anti-prying case 8 compressing dead bolt inboard made dead bolt 10 indentations, and in dead bolt 10 entered the scope of tongue mouth 9 into, the preloading spring resilience entered in the cavity of anti-prying case 8 afterbodys dead bolt 10.When needs opened the door, the far-end arc that rotational lock core or swing handle 3 drive cam 4 advanced lock pin 7, and lock pin 7 ejects anti-prying case 8 with dead bolt 10, and door can be opened.

Claims (2)

1, a kind of cam drives safe-guard door lock, has lock body and condom, and the arranged outside of lock body has lock core, it is characterized in that being provided with in the lock body cam, and the far-end arc and the lock pin of cam are inconsistent, and lockpin sleeve is located in the anti-prying case; Anti-prying case is the long-neck ampuliform, horizontally set, its cervical fixation is on lock body, afterbody is exposed to outside the lock body, afterbody be streamlined laterally, inner hollow, and offer into tongue mouth to the end; Be provided with the dead bolt of spring pretension in the condom, dead bolt be flat face laterally, be streamlined to the inside, dead bolt protrudes in the groove under nature, the size of groove will be held the afterbody of anti-prying case at least.

2, a kind of cam as claimed in claim 2 drives safe-guard door lock, the inside that it is characterized in that lock body is provided with swing handle, the plectrum of handle and lock core of moving in turn acts on interior external cam respectively, wherein the near-end circle of outside cam is provided with a part of straight string, the housing of lock body is provided with safety plug, safety plug is plugged in outside the straight string when the situation that is pressed.