CN1083923C - Safety lock for doors of dwellings or the like - Google Patents

Abstract

The invention relates to a safety lock for doors of dwellings or the like, comprising a detachable core unit(9), with aid of which the lock can quickly apply to a new key. Using a amplification transfering device between a sliding panel(12)loaded by the detachable core unit(9)and a boltlock plate(4)connecting thereon, the dimension of the movement direction of lock is considerably decreased.

Description

Be used for the safety lock on house door or the similar item

The present invention relates to a kind of safety lock that is used on house door or the similar item, it comprises a housing, this housing has one and is used to insert the keyhole of key and contains at least one bolt-lock, this bolt-lock is suitable for going out and being provided with a plate from a sidesway of housing, this plate have one can be by key engagement be used to drive the tooth bar that bolt-lock moves, with one group of guard plate, this group guard plate has the jack that has the tooth limit, a latch by the carrying of bolt-lock plate meshes by this jack, described guard plate each all have an edge to be used for being meshed with a mating part of the live part of key, and the effect that can resist the return spring device owing to the result of key engagement is located described jack towards one at it and formed the position that a latch can freely through passage and move.

In particular, the present invention relates to a kind of lock of the above-mentioned type, wherein one group of guard plate is carried by an auxiliary frame that removably is connected on the lock housing body with relevant return spring device, wherein, the keyhole that is used to insert key is formed on this auxiliary frame, wherein, on this auxiliary frame, also have being provided with of installing slidably to be used to drive the bolt-lock plate of the tooth bar of bolt-lock, described sliding panel is provided with and is used for the device that it removably is connected with bolt-lock in the lock housing body.

This above-mentioned class lock is disclosed among the applicant's the Italian utility model application No.53054-B/87.The advantage of this lock is, by be easy to and the operation of non-costliness it promptly can be applicable to a kind of key that the original newtype that provides is provided, so that can make the safety of lock is established again, for example once gave others, and this people may oneself duplicate after the identical keys for it at key.In order to make lock be applicable to a new key, need dismounting to be loaded with the auxiliary frame of guard plate and sliding panel and replace it with a similar framework that the guard plate that promising different key is shaped is set.

And the above-mentioned shortcoming that known lock ran into is, in this lock, the size of auxiliary frame is proportional with respect to the size of whole lock housing body basically, because, this auxiliary frame is moving of guided slidable plate suitably, and this sliding panel must move past the distance that equals locking bolt lock movable length.In case be installed on the door, the plate that the lock housing body will be fixed on the door covers in sight line.Habitual locking, this plate has the overlay that its size that has a keyhole has reduced.Yet in above-mentioned known lock, above-mentioned overlay has proportional size, because it must be covered with a corresponding hole that forms on door-plate, disassembles from the lock housing body so that allow above-mentioned auxiliary frame.

The objective of the invention is to overcome above-mentioned shortcoming.In order to achieve the above object, the invention provides a kind of lock of above-mentioned known type, and it is further characterized in that, device on the above-mentioned bolt-lock that is used for removably being connected by the sliding panel of auxiliary frame carrying in housing is made of an amplification transfer device, amplify transfer device by this, by the moving than length that can cause the locking bolt lock of moving of the predetermined length of the sliding panel of auxiliary frame carrying.

Because this feature in case the desirable movable length of locking bolt lock is chosen, then will reduce for the needed corresponding mobile length of sliding panel by the auxiliary frame carrying.Therefore, the direction that auxiliary frame is moved along sliding panel has less size, and this will allow that a less overlay use is being provided with on the door of this lock.

In a preferred embodiment, above-mentioned amplification transfer device is suitable for making speed that bolt-lock moves to double with respect to the speed that moves by the sliding panel of auxiliary frame carrying, therefore by key turns one circle is got final product so that lock cuts out and opens, and known lock requires two whole circles of key turns, has therefore obtained another advantage from viewpoint easy to use.

In a preferred embodiment, above-mentioned amplification transfer device is made of a kind of like this transfer device, it comprises a lever, one end of this lever is connected on the auxiliary frame pivotly, its opposite end removably is connected on the bolt-lock, and an one middle trunnion moves by the sliding panel by the auxiliary frame carrying.

Be connected the trunnion that transmits on the lever and be engaged in the groove that extends perpendicular to the bolt-lock moving direction of bolt-lock, therefore can make the bolt-lock translation by the rotation of moving the transmission lever that is driven by the sliding panel of auxiliary frame carrying.

From the following description in conjunction with the nonrestrictive accompanying drawing that purely provides in the mode of example, it is very clear that other features and advantages of the present invention will become, wherein:

Fig. 1 is the phantom drawing of the present invention's preferred embodiment of locking;

Fig. 2 is the decomposition diagram that Fig. 1 locks;

Fig. 3 and 4 is phantom drawings of the assembly relevant with the auxiliary frame of a part that forms Fig. 1 lock, but is in two kinds of different operating positions;

The sectional view of the amplification of the details of Fig. 5 the present invention lock;

Fig. 6 is the decomposition diagram of the amplification of the present invention's some part of locking.

Consult accompanying drawing, safety lock that is used for the house door of label 1 expression, the housing 2 that comprises a metal sheet, wherein, a hitching post 3 (Fig. 6) is installed with slidably, it comprises a plate (4) that is loaded with a plurality of cylindrical hitching posts 5, thus these hitching posts (5) can be a retracted position (Fig. 2,6) that is positioned at housing and one they be received within the matching seat on the fixed frame that is arranged on door so that move between with the extended position (Fig. 1) of door locked in fastening position.According to conventional techniques, lock also is provided with a sliding jaw 6, and this sliding jaw 6 is towards the extended position elastic biasing, as shown in Figure 1, so that by matching with corresponding seat on the fixed frame that is formed on door and door being retained on fastening position.Lock also comprises two vertical sliding parts 7 and 8, and they extend up and down and be suitable for being connected with other hitching post from housing 2, and these other hitching posts be used for wall that is arranged on a top and ground in match.

The unit that is used to control hitching post 3 is made of a fuse 9, this fuse 9 can disassemble and comprise an auxiliary frame 10 that is made of pair of parallel plate 11 from the side in house from hitching post, a bolt plate 12 that is slidingly installed (Fig. 3 and 4) is arranged between this parallel-plate 11, this bolt plate 12 has a tooth bar 13, and this tooth bar can be meshed (Fig. 2) by two tooth wings 14 on the effective end (15) that is formed on key (16).Key inserts in the cartridge units 9 by the keyhole on the every block of plate that is formed on two boards 11 17.

According to itself being a kind of technology of habitually practising, sliding panel 12 can only move by the key 16 that utilization has a kind of tooth wing 14 of predetermined profile shape.In cartridge units 9, be provided with one group of guard plate 18, these guard plates 18 have the jack (not shown in the accompanying drawing) that mates substantially with the tooth limit, and a safety post 19 that is fixed on the plate 12 meshes by it.When key 16 insertion keyholes 17 rotate then, the tooth wing 14 will be meshed with the edge of guard plate 18 and the effect of these plates antagonism return spring devices (not shown in the accompanying drawings) is moved along the vertical direction of the direction that moves with respect to plate 12.If key has the predetermined profile shape, each all will move to a position guard plate 18, make corresponding coupling jack can stay next clear passage, be used for moving of the safety post 19 that carried by plate 12.Therefore, plate 12 can move freely owing to key is engaged on the tooth bar 13.

The structure of guard plate 18, relevant return spring device, the jack of plate 18, the details of safety post 19 grades is not here still given and being illustrated, because they are known types, is that those of ordinary skills habitually practise.The important for the present invention whole cartridge units 9 that it is pointed out that is the mechanisms that plate 12 is moved owing to the key 16 with predetermined profile shape inserts the result of keyholes 17 and rotation subsequently.Whole cartridge units 9 is accommodated in the hole 20 of housing 2 (Fig. 2) and is fixed on the there by screw 21.

When cartridge units 9 was installed in the housing 2, plate 12 just operably was connected with the plate 4 of hitching post 3.This connection provides by an amplification transfer device, this device comprises that is transmitted a lever 23, and this transmission lever 23 is meshed with a groove 25 that forms on lever 23 by a pin 24 by 11 carryings of a plate and is connected pivotly on the auxiliary frame 10.At opposite end, lever 23 is carrying a protruding pin 26, and this protruding pin 26 is received within on the plate 4 of bolt-lock 3 in the groove 27 that forms along the direction perpendicular to the bolt-lock moving direction (Fig. 6), so lever 23 can make bolt-lock 3 translations around the rotation of pin 24.Why lever obtains to rotate, be because, part in the central, lever is hinged on by on slide plate 12 pins 28 carrying and that be directed in a groove 28a of one of plate 11.

Therefore, under the mounted situation of lock, key 16 inserts by keyhole 17, rotates then, and this key will make plate 12 move a predetermined length and make bolt-lock 3 move a bigger length.Particularly, in most preferred embodiment shown in the drawings, amplification ratio is 2, and therefore, during key turns, bolt-lock 5 will move with the double-speed with respect to the speed of plate 12, thereby the length that moves past is with the double length that moves past in plate 12.In fact, the user can make door sealed fully by making key turns one circle, and habitual lock what happens is then different, and it need make key turns two circles.But, the most important thing is that the length that plate 12 moves has reduced 1/2nd with respect to the length that bolt-lock 3 moves.This can make cartridge units 9 reduce greatly in the size of plate 12 moving directions, can guarantee the guide properly of this plate simultaneously.Therefore, on housing 2, on the direction that bolt-lock moves, has limited size equally for admittance cartridge units 9 set holes 20.Equally, the size that is installed in the cover plate (not shown) that is used to cover auxiliary frame 10 sight lines on the door also will be limited.

Resulting lock like this can be retained in all advantages of the known lock of describing in this manual beginning place, and it is not installing the shortcoming that requires to use the relative dimensions cover plate on the door of this lock.Simultaneously, it is convenient and easy many that the control of lock becomes, because, as long as make key turns enough once enclosing for door is locked fully.As situation,, change unit 9 with a unit that is applicable to new key and get final product if the key owner wishes after key is handled by unacquainted people to establish again the safety of lock at known lock.

Certainly, though principle of the present invention is constant, without departing from the scope of the invention, the details of its structure and embodiment can with respect to describe by way of example purely and show very big variation arranged.

Claims (3)

1. safety lock that is used for house or similar item, it comprises a housing (2), this housing (2) has one and is used to insert the keyhole (17) of key (16) and contains at least one bolt-lock (3), this bolt-lock (3) is suitable for going out and being provided with a plate (12) from a sidesway of housing (2), this plate (12) has one and is used to drive the tooth bar (13) that bolt-lock (3) moves by key (16) engagement, with one group of guard plate (18), this group guard plate (18) has the jack that has the tooth limit, latch (19) by bolt-lock plate (12) carrying meshes by this jack, described guard plate (18) each all have an edge to be used for being meshed with a mating part (14) of the live part (15) of key (16), and the effect that can resist the return spring device owing to the result of key (16) engagement forms the position that a latch (19) can freely through passage towards its place's jack and moves

Wherein, this group guard plate (18) is carried by an auxiliary frame (10) that removably is fixed on the housing (2) with relevant return spring device,

Wherein, because insert that the keyhole (17) of key (16) also is formed on the described auxiliary frame (10) and

Wherein, on described auxiliary frame (10), a described bolt-lock plate (12) of slidably installing is arranged, this plate (12) is provided with and is used for it and removably is connected device on the bolt-lock (3),

It is characterized in that described linkage is made of an amplification transfer device (23).

2. safety lock as claimed in claim 1, it is characterized in that, described amplification transfer device comprises that one is connected pivotly at one end that described bolt-lock plate (12) is gone up and removably is connected lever (23) on the bolt-lock (3) at opposite end, described lever is also hinged with a pin (28) at an one zone line, and this pin (28) is connected on the described bolt-lock plate (12) slidably.

3. safety lock as claimed in claim 1 is characterized in that, described amplification transfer device is suitable for being provided as 2 amplification ratio.

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