CN2418198Y

CN2418198Y - Lock and key thereof preventing trechnically unlocking

Info

Publication number: CN2418198Y
Application number: CN 00222839
Authority: CN
Inventors: 唐祖民
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-18
Filing date: 2000-04-18
Publication date: 2001-02-07
Anticipated expiration: 2010-04-18

Abstract

The utility model discloses a locking head which can prevent from technically opening, comprising a lock core, cylinders, springs and an outer sleeve. The utility model is characterized in that the outer sleeve and the lock core are provided with grooves and the groove on the lock core corresponds to the groove on the outer sleeve; the groove on the lock core is provided with a sliding sheet with a keyhole and a convex claw; the middle upper part of the keyhole of the lock core is made into an expanding hole for an inclined face; the sliding sheet and the lock core is fixedly connected with a connecting ring through the outer sleeve into a whole. The utility model has the advantages of good lock theft-proof function and simple structure.

Description

Lock capable of preventing from being opened by master key head and key

The utility model relates to a kind of theftproof lock.Be a kind of Lock capable of preventing from being opened by master key head and key specifically.

Lock commercially available at present and that use all is to be made of lock core, core retainer plate and therebetween pellet shot from a slingshot and spring, keyhole on the lock core directly exposes, be easier to detect pellet shot from a slingshot assembling situation from keyhole, a lot of people are easier to no key unlocking technology lock be opened, and have lost the anti-theft feature of lock.

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Lock capable of preventing from being opened by master key head and key that private key can't be opened that do not have is provided.

The purpose of this utility model realizes by following technical proposals:

The utility model comprises lock core, pellet shot from a slingshot, spring and overcoat; Overcoat and lock core are provided with groove, and the lock core upper groove is corresponding with the overcoat upper groove, and the lock core groove is provided with the slide plate of band keyhole and dog, and the lock core keyhole middle and upper part is designed to the inclined-plane extending bore, and slide plate and lock core are by overcoat and connecting ring is affixed is integral.

Also can offer a groove at the dog opposite side of slide plate, other establishes the card of a band keyhole and dog, and the card dog places in the lock core groove by groove.

Above-mentioned lock core groove can be located at plane on the lock core, also can be located at the lock core middle and upper part, and promptly the open slot of a band boss is established in the lock core middle and upper part, the slide plate of embedded tape splicing dog of open slot and keyhole, and corresponding outer the putting of slide plate dog is provided with groove.

The key that design one adapts with above-mentioned tapered end, the bending on harvest inclined-plane in promptly the key middle and upper part is designed to after the abduction.

Use the time to transfer keyhole on slide plate and the card and lock core keyhole neat with the key point, the key on harvest inclined-plane in after the insertion abduction, by outer inclined-plane on the key the dog on the slide plate is pushed in the lock core groove from the overcoat groove, the card dog is shifted onto in the overcoat groove from the lock core groove by the outer inclined-plane of key simultaneously, after key is inserted into the position, card is pushed the dog on the card in the lock core groove to from the overcoat groove by the active force on inclined-plane in the key, at this moment lock core is not stuck by dog, rotates the shank of the key by hand and drives the lock core rotation and will lock unlatching.

The utility model is the slide plate dog by setting up on the tapered end mainly, when the slide plate keyhole all aligns with lock core keyhole, dog on the slide plate is embedded in overcoat groove and the lock core groove, lock core can not be rotated, after key is inserted into the position, by the outer inclined-plane of key the slide plate dog is slided in the lock core groove, and make the lock core can be by key turns, when establishing card, because card key hole and lock core keyhole be not when lining up, the card dog embeds in lock core groove and the overcoat groove, and lock core also can't rotate.Slide plate dog and the card dog sliding distance in overcoat groove and lock core groove should be greater than the width of lock core keyhole.Slide plate dog and card dog and overcoat groove and lock core groove gap should be less than the gaps in tapered end pellet shot from a slingshot and pellet shot from a slingshot hole.So during the keyhole all align, pellet shot from a slingshot in the tapered end exposes, but dog is embedded in overcoat and the lock core groove, pellet shot from a slingshot in the tapered end and pellet shot from a slingshot interporal lacuna are again greater than the gap of dog in groove, the master-hand who does not have key unlocking exactly, also can't detect the assembling length of pellet shot from a slingshot, have only slide plate keyhole and lock core key hole are not lined up, lock core keyhole is hidden and can open by slide plate, at this moment the instrument that does not have the key unlocking technology is just powerless, and from above-mentioned situation as can be known, the utility model can be realized, following advantage is compared with prior art arranged: (1) no key unlocking technology is powerless to the utility model, has improved the anti-theft feature of lock.(2) key does not have return can not take out key in tapered end, has reduced the fault of lock.(3) if on the utility model, set up anti-drilling sheet, can play anti-technical opening and anti-drilling function simultaneously, better reached anti-theft effect.(4) the utility model is simple in structure, and practicality is very strong.

Fig. 1 is the utility model configuration diagram;

Fig. 2 is the utility model one embodiment lock core and slide vane structure diagrammatic sketch;

Fig. 3 is the utility model Key structure diagrammatic sketch.

In conjunction with the embodiments the utility model is further described with reference to the accompanying drawings below:

Embodiment 1, as shown in Figure 1, the utility model comprises lock core 3, overcoat 1, lock core is provided with groove 4, the groove of this enforcement is located at plane on the lock core, groove can be groove or logical groove of two, present embodiment is selected the latter for use, and it is corresponding with the groove 2 that puts the inboard outward, it is wide that groove should not be opened, the lock core groove is provided with the slide plate 7 of band keyhole 8 and dog 6, consider that anti-theft effect is better, present embodiment is provided with groove on the slide plate of dog opposite side, and other establishes the card 9 of a band keyhole and dog, the card dog passes slide plate and places groove, and slide plate dog and card dog and overcoat groove and lock core groove gap should be less than the gaps in tapered end pellet shot from a slingshot and pellet shot from a slingshot hole.Lock core keyhole top one side is designed to inclined-plane extending bore 5, and slide plate, card and lock core are by overcoat and 10 affixed being integral of the connecting ring on it.

Embodiment 2, as shown in Figure 2, establish the open slot 12 of a band boss 11 in the lock core middle and upper part, the slide plate 13 of embedded tape splicing dog of open slot and keyhole, slide plate and open slot shape adapt, dog is good with 0.1-0.2cm generally, present embodiment is selected 0.2cm for use, and the external diameter of slide plate is less than the opening vallecular cavity, and present embodiment selects for use slide plate dog direction of displacement length less than open slot cavity length 0.25cm, so that dog has move place, corresponding outer the putting of slide plate dog is provided with groove.

As shown in Figure 3, other establishes a key 14 that adapts with above-mentioned tapered end, the bending on harvest inclined-plane 15 in the key middle part is designed to after the abduction again.

Claims

1, a kind of Lock capable of preventing from being opened by master key head, comprise lock core, pellet shot from a slingshot, spring and overcoat, it is characterized in that: overcoat (1) and lock core (3) are provided with groove (4), the lock core upper groove is corresponding with overcoat upper groove (2), the lock core groove is provided with the slide plate (7) of band keyhole (8) and dog (6), the lock core keyhole middle and upper part is designed to inclined-plane extending bore (5), and slide plate and lock core are by overcoat and affixed being integral of connecting ring (10).

2, according to the said Lock capable of preventing from being opened by master key head of claim 1, it is characterized in that: the dog opposite side of slide plate is offered a groove, and other establishes the card of a band keyhole and dog, and the card dog places in the lock core groove by groove.

3, according to the said Lock capable of preventing from being opened by master key head of claim 1, it is characterized in that: the lock core groove is located at plane on the lock core.

4, according to the said Lock capable of preventing from being opened by master key head of claim 1, it is characterized in that: the lock core groove is located at the lock core middle and upper part, the open slot (12) of a band boss (11) is established in the lock core middle and upper part, the slide plate of embedded tape splicing dog of open slot and keyhole, and corresponding outer the putting of slide plate dog is provided with groove.

5, a kind of key of opening the said tapered end of claim 1 is characterized in that: the bending on harvest inclined-plane (15) in key (14) middle and upper part is designed to after the abduction.