CN202831821U

CN202831821U - Improved door lock mechanism

Info

Publication number: CN202831821U
Application number: CN2012205314637U
Authority: CN
Inventors: 徐钜祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-17
Filing date: 2012-10-17
Publication date: 2013-03-27
Anticipated expiration: 2022-10-17

Abstract

The utility model relates to an improved door lock mechanism which comprises a left lock body and a right lock body which are connected with each other. A left lock core shaft is inserted in the left lock body, a right lock core shaft opposite to the left lock core shaft is inserted in the right lock body, an unlocking thumbwheel is arranged between the left lock body and the right lock body, a left transmission block is used for connection and transmission between the unlocking thumbwheel and the left lock core shaft, a right transmission block is used for connection and transmission between the unlocking thumbwheel and the right lock core shaft, balancing springs are arranged between the left lock core shaft and the left transmission block and between the right lock core shaft and the right transmission block, pin holes are formed in the left transmission block and in the right transmission block, an ejector spring and a locking pin are arranged in each pin hole, and lock holes matched with the lock pins are formed in the unlocking thumbwheel. Due to the design, when the lock body and the lock core shaft on one side are destroyed violently, the locking pin in the transmission block on the other side is pressed by the ejector spring and enters one lock hole in the unlocking thumbwheel, and therefore the unlocking thumbwheel cannot be rotated, and the purpose of preventing the improved door lock mechanism from being unlocked by violence is achieved; and the improved door lock mechanism has the advantages of being simple and compact in structural design, good in anti-theft performance, wide in application scope and high in reliability.

Description

A kind of improved door lock mechanism

Technical field

The utility model relates to a kind of improved door lock mechanism.

Background technology

Existing common door lock suffers in the situation of violence damage at a side chain core body, and the robber can stir the thumb wheel opening door lock of unblanking by instrument, therefore, says that from certain angle its theftproof performance is very imperfect.

Summary of the invention

Common door is locked in the weak problem of its theftproof performance in the situation that suffers violence damage in the prior art in order to overcome, the utility model provides a kind of improved door lock mechanism, the structure design of this improved door lock mechanism is compact, when the violence damage that meets with to a certain degree, can initiatively limit the thumb wheel of unblanking rotarily open, strengthened theftproof performance, reliability is high.

The technical scheme that its technical problem that solves the utility model adopts is: comprise continuous left lock body and right lock body, left lock body, the relative left lock core shaft of pegging graft respectively in the right lock body, right lock core shaft, be provided with the thumb wheel of unblanking between left lock body and the right lock body, unblank between thumb wheel and the left lock core shaft by Left Drive piece connection for transmission, unblank between thumb wheel and the right lock core shaft by right drive block connection for transmission, between left lock core shaft and the Left Drive piece, be equipped with balancing spring between right lock core shaft and the right drive block, on Left Drive piece and right drive block, all offer pin-and-hole, assembling top spring and lock pin in the pin-and-hole, the thumb wheel of unblanking is provided with the lockhole that matches with lock pin.

One sidepiece of Left Drive piece, right drive block forms that thumb wheel is protruding to be connect, the other side forms that lock core is protruding to be connect, lock core is protruding to connect axially slidably that sleeve drives rotation in relative lock core shaft and by lock core shaft, thumb wheel is protruding connect axially slidably sleeve in the thumb wheel of unblanking with the driving thumb wheel rotation of unblanking.

Left lock body, right lock body and unblank to be equipped with between the thumb wheel boss, boss links to each other with lock body by screw, and the both sides of the thumb wheel of unblanking have extension, and extension rotatably inserts boss and is located by jump ring.

The utility model is by above-mentioned specific design, at a side chain body, when lock core shaft suffers violence damage, then the lock pin in the opposite side drive block will be suppressed the lockhole that enters on the thumb wheel of unblanking, the thumb wheel of unblanking can not be rotated, reach the purpose that anti-violence damage is opened, have the advantage that structure design is simply compact, theftproof performance is strong, applied widely, reliability is high.

Description of drawings

Below in conjunction with drawings and Examples detailed content of the present utility model is described.

Fig. 1 is decomposition texture schematic diagram of the present utility model.

Fig. 2 is assembly structure schematic diagram of the present utility model.

Fig. 3 is the view of the utility model lock pin when a side chain body suffers violence damage.

The specific embodiment

As shown in the figure, the utility model comprises continuous left lock body 1 and right lock body 2, and left core body 1 and right lock body 2 can be one-body molded, also can be connected and fixed by connecting rod 18.Left lock body 1, the right lock body 2 interior relative left lock core shafts 3 of pegging graft respectively, right lock core shaft 4, be provided with the thumb wheel 5 of unblanking between left lock core body and the right lock core body, unblank between thumb wheel 5 and the left lock core shaft 3 by Left Drive piece 6 connection for transmissions, unblank between thumb wheel 5 and the right lock core shaft 4 by right drive block 7 connection for transmissions, the concrete structure of above-mentioned connection for transmission can be at Left Drive piece 6, one sidepiece of right drive block 7 forms that thumb wheel is protruding to connect 15, the other side forms that lock core is protruding to connect 16, lock core is protruding connect 16 axially slidably sleeve in relative lock core shaft and by lock core shaft, drive rotation, thumb wheel is protruding connect 15 axially slidably sleeve in the thumb wheel 5 of unblanking with driving thumb wheel 5 rotations of unblanking.Between left lock core shaft 3 and the Left Drive piece 6, be equipped with balancing spring 8 between right lock core shaft 4 and the right drive block 7, on Left Drive piece 6 and right drive block 7, all offer pin-and-hole 9, assembling top spring 10 and lock pin 11 in the pin-and-hole 9, the thumb wheel 5 of unblanking is provided with the lockhole 12 that matches with lock pin 11.Be bulk strength and the conveniently assembling of whole lock body that strengthens lock body, one section of left lock body 1 and right lock body 2 can independently be boss 13, boss 13 links to each other with lock body by screw 14 or connecting rod 18 links to each other, the unblank both sides of thumb wheel 5 have extension 15, extension 15 rotatably inserts boss 13 and by jump ring 17 location, the design of jump ring 17 can prevent from can being drawn out at a side chain body, the thumb wheel 5 of unblanking when lock core is destroyed.Under normal operating condition, Left Drive piece 6 and right drive block 7 are kept balance under the effect of two balancing springs 8, thumb wheel on Left Drive piece 6 and the right drive block 7 is protruding to connect the 15 equal sleeve interlocks thumb wheel 5 of unblanking, and lock pin 11 is unblanked the inner wall limit of thumb wheel 5 in the pin-and-hole 9 of drive block.When inserting key, key can make the drive block of the drive block of this side and opposite side certain command range that all moves ahead, and makes that the thumb wheel of opposite side drive block is protruding to be connect 15 and separate with the thumb wheel 5 of unblanking, and the thumb wheel 5 of unblanking can normally rotate unblanks.As shown in the figure when left lock body 1 and left lock core shaft 3 during by violence damage, the balancing spring 8 on the left side loses support, thereby no longer Left Drive piece 6 is exerted pressure, the balancing spring 8 on the right promotes right drive block 7 and Left Drive piece 6 moves to the left to the position, thereby make lockhole 12 coaxial lines on the lock pin 11 in the right drive block 7 and the thumb wheel 5 of unblanking, under the effect of top spring 10, lock pin 11 pops up and enters lockhole 12, right drive block 7 and the thumb wheel 5 of unblanking are locked together, simultaneously the thumb wheel of Left Drive piece 6 is protruding connects 15 and separates with the thumb wheel 5 of unblanking, under such state, can't drive the thumb wheel 5 of unblanking by Left Drive piece 6 rotates, connect simultaneously 16 also keeps pegging graft with right lock core shaft 4 owing to the lock core of right drive block 7 is protruding, therefore also can't walk around or directly drives thumb wheel 5 rotations of unblanking by taking Left Drive piece 6 away, to reach the purpose of anti-violence unlatching.Above-described embodiment only is that the preferred embodiment to a kind of improved door lock mechanism of the utility model is described; be not that design and scope to utility model limits; under the prerequisite that does not break away from the utility model scheme; various external form modification and improvement that those skilled in the art make the technical solution of the utility model all should fall into the protection domain of a kind of improved door lock mechanism of the utility model.

Claims

1. improved door lock mechanism, comprise continuous left lock body and right lock body, left lock body, the relative left lock core shaft of pegging graft respectively in the right lock body, right lock core shaft, be provided with the thumb wheel of unblanking between left lock body and the right lock body, it is characterized in that unblanking between thumb wheel (5) and the left lock core shaft (3) by Left Drive piece (6) connection for transmission, unblank between thumb wheel (5) and the right lock core shaft (4) by right drive block (7) connection for transmission, between left lock core shaft (3) and the Left Drive piece (6), be equipped with balancing spring (8) between right lock core shaft (4) and the right drive block (7), on Left Drive piece (6) and right drive block (7), all offer pin-and-hole (9), assembling top spring (10) and lock pin (11) in the pin-and-hole (9), the thumb wheel of unblanking (5) is provided with the lockhole (12) that matches with lock pin (11).

2. a kind of improved door lock mechanism according to claim 1, a sidepiece that it is characterized in that Left Drive piece (6), right drive block (7) forms that thumb wheel is protruding to connect (15), the other side forms that lock core is protruding to connect (16), lock core is protruding connect (16) axially slidably sleeve in relative lock core shaft and by lock core shaft, drive rotation, thumb wheel is protruding connect (15) axially slidably sleeve in the thumb wheel of unblanking (5) with driving thumb wheel (5) rotation of unblanking.

3. a kind of improved door lock mechanism according to claim 1 and 2, it is characterized in that being equipped with boss (13) between left lock body (1), right lock body (2) and the thumb wheel of unblanking (5), boss (13) links to each other with lock body by screw (14), the unblank both sides of thumb wheel (5) have extension (15), and extension (15) rotatably inserts boss (13) and located by jump ring (17).