CN2318351Y - Door lock with single spring bolt - Google Patents

Abstract

The utility model relates to a door lock with a single bolt, which is composed of a bolt 1, a switch blade spring 2, a back cover 3, a top spring pole 4, a lock shell 6, a draw rod 7, an outer lock head 13, an inner lock head 16, a key 18 and a bumping post 21, wherein an inner switch shifting blade 17 arranged on an inner lock core 19 can rotate to drive a switch blade 5 to rotate around a support pole 8 of the switch blade. A sliver-shaped shifting blade sleeve 10 and an outer switch shifting blade 9 can rotate to drive the switch blade 5 to rotate around the support pole 8 of the switch blade. The outer circle of the outer switch shifting blade 9 is provided with two convex corners which form a certain included angle with unequal length.

Description

A kind of single flapper lock

The utility model relates to a kind of door lock, particularly a kind of single flapper lock.

Existing single flapper lock is latch mostly, has only outer tapered end, does not have inner lock head, and outer tapered end and key, just plays driving the effect that dead bolt is done straight-line external handlebar, dead bolt can't be pinned, thereby the anti-group pick-proof of this lock is poor.

It is a kind of simple in structure that the purpose of this utility model is to provide, the single flapper lock that anti-dial, pick-proof is strong.

The purpose of this utility model is to realize like this, a kind of single flapper lock of being made up of dead bolt 1, switch plate spring 2, bonnet 3, top spring post 4, lock housing 6, pull bar 7, outer tapered end 13, inner lock head 16, key 18, bumping post 21 is characterized in that being contained in interior switch plectrum 17 rotations on the internal cylinder 19 and can drive switch plate 5 and rotate around switch plate pillar 8. Rectangular plectrum cover 10 and 9 rotations of outer switch plectrum can drive switch plate 5 and rotate around switch plate pillar 8.The salient angle that two varying lengths is arranged on the outer garden of outer switch plectrum 9 and form an angle.

The utility model compared with prior art has the following advantages:

The utility model has increased sealed dead bolt device of inner lock head and outer tapered end lock uint, therefore, and when this lock is in locked state, even also must use key door could be opened at the door drawback lock.

Description of drawings:

Fig. 1 is the structural representation of an embodiment locked state of the utility model.

Fig. 2 regards bonnet 3 A of Transparent Parts as to view for Fig. 1.

Fig. 3 takes the A of bonnet 3 away to view for Fig. 1.1, dead bolt 2, switch plate spring 3, bonnet 4, top spring post 5, switch plate 6, lock housing 7, pull bar 8, switch plate pillar 9, outer switch plectrum 10, rectangular plectrum cover 11, rectangular plectrum 12, pad 13, outer tapered end 14, pull-rod spring 15, drag hook 16, inner lock head 17, interior switch plectrum 18, key 19, internal cylinder 20, lock core back-up ring 21, bumping post

Embodiment:

Dead bolt 1 is the brass casting part.Bonnet 3, switch plate 5, lock housing 6, outer switch plectrum 9, interior switch plectrum 17 adopts carbon constructional quality steel to be stamped to form.It is one with outer switch plectrum 9 riveteds that rectangular plectrum cover 10 passes bonnet 3, and rectangular plectrum cover 10 can rotate on bonnet 3.An end riveting has top spring post 4 on the switch plate 5, and the other end is contained in riveted on the switch plate pillar 8 on the lock housing 6, and can rotate around switch plate pillar 8.Switch plate spring 2 is installed between lock housing 6 and the top spring post 4.Dead bolt 1 and pull bar 7 riveteds are one.Bumping post 21 riveteds are on pull bar 7, and pull-rod spring 14 is through on the pull bar 7, and screw is fixed as one drag hook 15 and pull bar 7.When opening the door outdoors, (be illustrated in figure 2 as the locking states of this lock), key 18 is inserted in outer tapered end 13 holes, key 18 drives outer switch plectrum 9 by rectangular plectrum 11 and rectangular plectrum cover 10 and turns clockwise, short salient angle toggle switch sheet 5 on the outer switch plectrum 9 is rotated counterclockwise around switch plate pillar 8, switch plate 5 leaves dead bolt 1, forward on the double dot dash line position of switch plate 5 as shown in Figure 2, continue screw key 18, long salient angle on the outer switch plectrum 9 is stirred bumping post 21, bumping post 21 drives dead bolt 1 by pull bar 7 and enters in the lock housing 6, and at this moment door has just been opened.During locking, key 18 inserts in outer tapered end 13 holes and is rotated counterclockwise 45 °, and the breach end of switch plate 5 is stuck on the dead bolt 1, even the effect of external force is arranged, dead bolt 1 also can't enter in the lock housing 6.To transfer to behind key 18 returns, door just is in locking states, in door (shown in Figure 3), the unlatching of this lock and locking principle with identical outdoors.This lock construction is simple, anti-dials, pick-proof is strong.

Claims (3)

1, a kind of single flapper lock of being made up of dead bolt 1, switch plate spring 2, bonnet 3, top spring post 4, lock housing 6, pull bar 7, outer tapered end 13, inner lock head 16, key 18, bumping post 21 is characterized in that being contained in interior switch plectrum 17 rotations on the internal cylinder 19 and can drive switch plate 5 and rotate around switch plate pillar 8.

2, a kind of single flapper lock according to claim 1 is characterized in that rectangular plectrum cover 10 and 9 rotations of outer switch plectrum can drive switch plate 5 and rotate around switch plate pillar 8.

3, a kind of single flapper lock according to claim 1 and 2 is characterized in that the salient angle that two varying lengths is arranged and form an angle on the outer garden of outer switch plectrum 9.

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