CN2283692Y - Three-rod double-safety door lock - Google Patents

Abstract

The utility model relates to a three pole double insurance locks, on the basis of original double-bolt lock and shifting block and locking lever, adopt spring bolt and shifting block to make approximate telescopic connection structure of slider, the shifting block main part articulates on the lock body, the slotted hole cooperation that the pin was passed through with square spring bolt tip is connected to one end, all the other three-terminal articulates there is the locking lever, still be equipped with a nine lock cores in the lock body, the flexible of its spring bolt restriction square spring bolt, the concertina movement by the spring bolt drives the shifting block and swings around the hinge point to realize a plurality of positions of locking lever simultaneous control door wing, pick-proof effectively, anticollision, prevent trying on to open.

Description

Three bar dual fail-safe door locks

The utility model relates to the improvement of two flapper locks, particularly a kind of three bar dual fail-safe door locks.

Two flappers are in the past locked, and utilize Square lock bolt and oblique dead bolt that the door wing is pinned, but because two dead bolts insertion lock housing is not dark, is pried open or rush open by hard thing easily.People at two flappers lock can only be on a position opposite house wing carry out the shortcoming of locking, proposed to utilize link gear while opposite house wing on two or three positions to carry out the structure of locking, but such structural element is various, and the transmission complexity is changed bigger to lock body itself; And the crashproof ability of lock cylinder of two tongues lock is relatively poor, in case that lock core is hit is mashed, the locking of other position lost efficacy thereupon, and was not safe and reliable.

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part, provides a kind of simple in structure, safe and reliable, simultaneously three bar dual fail-safe door locks of a plurality of positions of the lock door wing.

The purpose of this utility model is achieved by the following technical solution: three bar dual fail-safe door locks, mainly by the Square lock bolt in lock body, the lock body, oblique dead bolt, lock cylinder with the dead bolt interlock, and the locking bar formation hinged with shifting block, special feature is that Square lock bolt forms being connected of approximate slide block sleeve with shifting block, the shifting block main body is hinged on the lock body, and an end is connected by the slotted eye of pin and Square lock bolt end, and its excess-three end is hinged with locking bar; One or nine lock pins also are housed in the lock body, and its dead bolt limits the flexible of Square lock bolt.Adopt such structure, the motion of Square lock bolt drives shifting block with its hinged center swing, thereby locking bar is driven, and realize opposite house wing locking or unlatching, and except that original lock cylinder constraint Square lock bolt, the dead bolt that another lock also is housed retrains to it.Therefore, the utlity model has following advantage:

1, member, simple in structure, ensuring smooth transmission;

2, the dual locking of Square lock bolt, safe and reliable;

3, locking bar is with a plurality of positions of the dead bolt latching door wing, crashproof, pick-proof.

Fig. 1 is a structural representation of the present utility model.

Below in conjunction with drawings and Examples the utility model is further elaborated.

With reference to Fig. 1, present embodiment is to improve on the basis of existing two flappers lock, thereby the agent structure of two flapper lock do not have big change, comprising: tiltedly dead bolt 2, Square lock bolt 3, lock body 4, with the lock cylinder 1 of Square lock bolt 3 interlocks, the square tongue film-making (do not have among the figure and draw) that restriction Square lock bolt 3 is flexible step by step.

Shifting block 8 is square substantially, there are three to be hinged with locking bar 10 in four angles, three locking bars 10 stretch to Men Yisan different position respectively, the other end of shifting block 8 (remaining one jiao) via pins 9 is connected with the slotted eye at dead bolt 3 rear portions, form the connection of approximate slide block sleeve, and the center of shifting block 8 and lock body 4 are hinged.Like this, the motion of the advance and retreat of Square lock bolt 3 drives shifting block 8 around the hinge swing by pinning 9, makes the locking bar on the shifting block 8 produce stretching motion respectively, with a locking or a unlatching door wing.

For the pick-proof that strengthens lock, crashproof ability, present embodiment is in lock body 4, nine lock pins 6 also are equipped with in the top of Square lock bolt 3, nine lock pins 6 can be opened by the keyhole 7 of inside and outside unlatching, and the motion of 5 pairs of Square lock bolts 3 of dead bolt of nine lock pin 6 controls uses restraint, when promptly dead bolt 5 puts down, even Square lock bolt 3 is under the situation that lock cylinder 1 is opened, still blocked, can not do the motion of stretching or contracting by dead bolt 5; Have only dead bolt 5 through key operated nine lock pins 6, after mentioning, Square lock bolt 3 ability constraint reliefs can freely stretch, and swing to drive shifting block 8.Therefore, present embodiment has double lock, have only two locks all to open after, could open a door wing, particularly outstanding is, and nine lock pins 6 install reliable being difficult for is pried open or rush open.

Certainly, in addition to the implementation, nine lock pins 6 of constraint Square lock bolt 3 can adopt other forms of lock core structure, the position also can change, be not to be loaded on the top: and the hinged also visual actual conditions of locking bar 10 increase and decrease on the shifting block 8, the shape of shifting block 8 also is not limited to square, produces up and down or swing as long as can drive locking bar 10.

Claims (1)

1, three bar dual fail-safe door locks, mainly by the Square lock bolt (3) in lock body (4), the lock body (4), oblique dead bolt (2), lock cylinder (1) with the dead bolt interlock, and locking bar (10) formation hinged with shifting block (8), it is characterized in that: Square lock bolt (3) forms being connected of approximate slide block sleeve with shifting block (8), shifting block (8) main body is hinged on the lock body (4), and an end is connected by the slotted eye of pin (9) with Square lock bolt (3) end, and its excess-three end is hinged with locking bar (10); One or nine lock pins (6) also are housed in the lock body (4), and its dead bolt (5) limits the flexible of Square lock bolt (3).

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