CN2616612Y - Sheet type antitheft device for lock - Google Patents

Abstract

The utility model relates to a lock-blade type anti-theft device of lock. A plurality of perforations are arranged in the side of the lock core of the lock; an elastic expansion lock blade group is arranged in each perforation; each lock blade group is provided with a first and a second lock blade, and a middle pore is arranged in the first and the second respectively. The expansion hole is arranged approximately on the central expansion perforation of the both sides of the middle pore, and a den is formed in the inner side, in which the middle pore staggers the expansion hole. The den locations of the first lock blade and the second lock blade are staggered, and in accordance with the inner side end of the middle pore; the dens form inner-contraction or evagination shapes with unequal width, which do not make the dens of the lock blade group fully exposed from the lock core to reduce the opportunity that the thief presses the lock blade with tool.

Description

The locking plate formula anti-theft device of lockset

Technical field

The utility model relates to a kind of locking plate formula anti-theft device of lockset, relates in particular to the anti-theft device of core, does not allow the thief unblank at short notice to succeed easily.

Background technology

Lockset of the prior art is to be provided with a rotating core in a pedestal, there is lockhole in core end face central authorities, run through number row perforation inwardly in the side, each road perforation plug-in mounting one cooperates spring to form flexible lock pearl, make the lock pearl of different depth, the corresponding position of inserting at key bar forms concavo-convex cooperation, and can allow the key turns core reach the purpose of unblanking.But being seen core all is in the perforation of each road one lock pearl only to be installed, so the thief holds with iron wire etc., just can keep off one by one and squeeze out lock pearl or locking plate, successfully unblanks at short notice to succeed, and makes us hard to guard against; And applicant once proposed and get permission a patent application, notification number is 506458 " the antitheft structures of the core of lockset ", be exactly at reaching this, and the design at core several lock sheet groups are installed, but lock sheet groups form by the locking plate of longitudinal extension, locking plate is the hollow sheet, it is prominent that inboard respectively staggered positions is provided with retaining, prominent non-adjacent each other, the asymmetric each other direction of retaining so allow the thief be difficult for controlling simultaneously two locking plates, postpones the stealing time.But, thief's trick emerges in an endless stream, because the inboard that the prominent corresponding locking plate of each retaining is hollow all is to be standing shape, no doubt the position is variant, only all can see and keep off prominent exposing by the lockhole of core end face, compressing and stolen possibility of unblanking through instrument so still have by the thief, so how effectively to progress greatly, strengthen anti-theft effect, is the problem that need grind think of repeatedly.

The utility model content

In order to overcome weak point of the prior art, the purpose of this utility model is to provide a kind of locking plate formula anti-theft device of lockset, is difficult for lockhole by core and is compressed by instrument and unblank easily to reach locking plate, increases the difficulty that the thief unblanks.

In order to realize this purpose, the technological means that the utility model used is to provide a kind of locking plate formula anti-theft device of lockset, lockset has a core, core one end face is provided with the lockhole that inserts for key, the side of core is run through the compartment of terrain several perforation is set along axially, and the central authorities of perforation are with the axial straight line of lockhole aims at, and being provided with the prominent rank portion of standing shape at each each both sides inwall of boring a hole, the prominent rank portion of each perforation arranges to be opposite shape;

Several are installed on the lock sheet groups of perforation, each lock sheet groups comprises one first locking plate and second locking plate, first, two locking plates have one to support sheet in outside evagination, first, the opposite shape about sheet is of two locking plates, make first, two locking plates insert perforation, clip a little spring for supporting between sheet and prominent rank portion, first, two locking plates are provided with a mesopore, the about middle position in mesopore both sides, wear the formation reaming with symmetrical kenel expansion, staggering at mesopore, to form a tooth prominent for the inboard corner of reaming, and first, the tooth of the two locking plates corresponding shape that staggers that is of dashing forward contracts in comprising so as to forming at corresponding mesopore medial margin line, evagination, the concordant width form that waits or not.

The antitheft effect that the utility model can obtain, each tooth that mainly is locking plate is prominent, the spoon bar roller seating space design of corresponding key, make the mesopore both sides central authorities of locking plate form reaming, make locking plate prominent at the tooth that differs from the formation of reaming corner, form with mesopore medial margin line and to contract or evagination shape or concordant in corresponding, be and contract in corresponding or flush in mesopore medial margin line when tooth is prominent, then be difficult for seeing outer dewiness by lockhole, therefore allow the thief see that comprehensively the tooth of all locking plates is prominent by lockhole, make the thief be difficult for just being pressed against locking plate easily with instrument by lockhole unblanks comprehensively, increase the height difficulty of unblanking under the no key, postpone thief deathwatch's time, force the thief to have to go back on one's tracks, promote antitheft security function.

Description of drawings

Fig. 1 is an assembly exploded perspective view of the present utility model.

Fig. 2 is an axial assembled sectional view of the present utility model.

Fig. 3 is a radially assembled sectional view of the present utility model.

The locking plate that Fig. 4 has inserted for key of the present utility model is assembled sectional view radially.

Fig. 5 is a radially assembled sectional view of another locking plate of inserting of key of the present utility model.

Fig. 6 is a key side plan view of the present utility model.

Fig. 7 is a key 7-7 cross-section cutaway view of the present utility model.

The specific embodiment

The utility model relates to a kind of locking plate formula anti-theft device of lockset, please referring to Fig. 1 to Fig. 3, basically, be equipped with a cylinder 11 by a pedestal 10 in an end face, form a tank 12 in the cylinder 11, in tank 12 core 20 is installed, core 20 1 end faces are provided with a lockhole 21 and drive core 20 to allow that key 40 inserts, terminal arranged outside one ring groove 22 of core 20, insert tank 12 for core 20, be equipped in cylinder 11 outsides by C shape clip 13 and detain, allow core 20 blockings be installed in the tank 12 to groove 22.Below further constitute and be described as follows with regard to each assembly.

This core 20, its side is along axially with horizontal intercrossing type compartment of terrain several perforation 23 being set, 23 sections of boring a hole are hollow lengthy motion picture shape, be degree of lip-rounding sheet, central authorities are with lockhole 21 axial straight lines aims at, and at each 23 each both sides inwall of boring a hole, and is deeply expanded by an end and establishes the L-shaped otch 24 of section one, the level place of otch 24 is a prominent rank portion 241, and is opposite about otch 24 directions of each perforation 23 are;

One is installed on the lock sheet groups 30 of perforation 23, lock sheet groups 30 comprise two first, two locking plates 31,32, first, two locking plates 31,32 all are set to degree of lip-rounding sheet 33, first, two locking plates 31,32 degree of lip-rounding sheet 33 outsides, every corresponding otch 24 is provided with direction, evagination has one to support sheet 34, make first, two locking plates 31,32 insert perforation 23, allow and clip a little spring 35 to sheet 34 and 241 in prominent rank portion, provide first, two locking plates 31,32 have telescopic resilience about in the of, and by otch 24 with support cooperating of sheet 34, limit first, two locking plates 31,32 telescopic movables in tank 12 scopes only;

First and second locking plate 31,32 further cooperates Fig. 1, shown in Figure 3 again, first locking plate 31 is in interior formation one microscler mesopore 36, the about middle position in mesopore 36 both sides, wear formation semicircle shape reaming 361 with symmetrical kenel expansion, form a tooth prominent 37 in the stagger inboard corner of reaming 361 of mesopore 36, the corner that differs from tooth prominent 37 then can form projection 39, and inserts second locking plate 32 of perforation 23 with first locking plate 31, is then forming tooth prominent 38 with first locking plate, the 31 teeth prominent 37 corresponding diagonal positions that are; Make lock sheet groups 30 each first, two locking plates 31,32, in the axial direction with waveform, contract in forming with corresponding mesopore 36 medial margin lines diametrically or evagination does not wait the width form, allow lock sheet groups 30 each first, two locking plates 31,32 have the wide variation that varies in size, such as lock sheet groups 30 first to be positioned at the place ahead, two locking plates 31,32 is example, extremely shown in Figure 5 as Fig. 3, first, two locking plates 31,32 tooth prominent 37,38 do not surpass the inboard of mesopore 36, mesopore 36 inside walls contract or concordant state in being accordingly relatively, cooperate Fig. 1 again, Fig. 6, shown in Figure 7, illustrate first, two locking plates 31,32 design, key 40 be with lock sheet groups 30 each first, two locking plates 31,32 tooth prominent 37,38 are corresponding arranges, so spoon bar 41 central authorities of key 40 are toward the half-terete protruding stopper 42 of both sides relief, spoon bar 41 is boundary with protruding stopper 42, on 41 on the spoon bar at the angle, two ends of corresponding projection 39, form second roller seating space 43 of invaginated type at interval, and corresponding first, two locking plates 31,32 tooth prominent 37,38, then on 41 on spoon bar, comprise first roller seating space 45 that forms the wave groove on 42 of the protruding stoppers, protruding stopper 42 is owing to be arc surface, so cause first roller seating space 45 by the degree of depth a of its inner basal plane to the protruding stopper 42 of apical margin, complying with the waveform curve and difference, according to this first, two locking plates 31,32 tooth prominent 37,38 sizes, shape, width form for against first roller seating space, 45 opening ora terminalis also can have difference along with this degree of depth a.

Therefore before key 40 did not insert lockhole 21, locking plate 31 was subjected to shoring of little spring 35 and presents and move shape; After key 40 inserts lockhole 21, key 40 promptly compresses little spring 35, allow spoon bar 41 correspond to each first, two locking plates 31,32 mesopore 36,361, allow first, two locking plates 31,32 respectively by its tooth prominent 37,38 is concavo-convex against (the not necessarily concavo-convex degree of depth that plugs together is in full accord with first roller seating space 45 of spoon bar 41 both sides, can deeply can be shallow, or the prominent ora terminalis that only abuts to first roller seating space of tooth), projection 39 can with second roller seating space, 43 external end edges against, the form that cooperates spoon bar 41 to insert, allow first, two locking plates 31,32 form the corresponding shape of concavo-convex inserting with spoon bar 41, successfully drive core 20 by key 40, reach the purpose of unblanking.Otherwise, key 40 does not insert lockhole 21, contract owing to first and second locking plate 31,32 corresponding mesopores 36 or in having, or evagination is arranged or have concordant, unblank so allow the thief can't allow instrument compress each lock sheet groups 30 first and second locking plate 31,32 by lockhole 21 easily, the tooth that can't compress each first and second locking plate 31,32 dashes forward 37,38 comprehensively, can not overcome lock sheet groups 30 easily at short notice, postpone uncaging time, reduce stolen may with risk.

Claims (6)

1. the locking plate formula anti-theft device of a lockset, it is characterized in that: lockset has a core, core one end face is provided with the lockhole that inserts for key, the side of core is along axially, run through the compartment of terrain several perforation is set, the central authorities of perforation are with the axial straight line of lockhole and aim at, and are provided with the prominent rank portion of standing shape at each each both sides inwall of boring a hole, and the prominent rank portion arrangement of each perforation is opposite shape;

Several are installed on the lock sheet groups of perforation, each lock sheet groups comprises one first locking plate and one second locking plate, first, two locking plates have one to support sheet in outside evagination, first, the opposite shape about sheet is of second locking plate, make first, two locking plates insert perforation, clip a little spring for supporting between sheet and prominent rank portion, first, two locking plates are provided with a mesopore, the about middle position in mesopore both sides, wear the formation reaming with symmetrical kenel expansion, staggering at mesopore, to form a tooth prominent for the inboard corner of reaming, and first, the tooth of the two locking plates corresponding shape that staggers that is of dashing forward does not wait the width form so as to forming at corresponding mesopore medial margin line.

2. the locking plate formula anti-theft device of lockset as claimed in claim 1 is characterized in that: described core is at each both sides inwall of perforation, deeply expanded by an end and establishes the L-shaped otch of section one, and the level place of otch is a prominent rank portion, and prominent rank portion compresses for little spring.

3. the locking plate formula anti-theft device of lockset as claimed in claim 1, it is characterized in that: described locking plate is degree of lip-rounding sheet, and the perforation section of core is the degree of lip-rounding.

4. the locking plate formula anti-theft device of lockset as claimed in claim 3 is characterized in that: described first and second locking plate then forms projection differing from the prominent corner of tooth.

5. the locking plate formula anti-theft device of lockset as claimed in claim 1 is characterized in that: described lock sheet groups, first and second locking plate can distribute along the axial undulate of core under it.

6. the locking plate formula anti-theft device of lockset as claimed in claim 1, it is characterized in that: the lockhole of described core cooperates a key to insert, this key has the past half-terete protruding stopper of both sides relief of spoonful bar central authorities, the spoon bar is boundary with protruding stopper, on the spoon pole face at the angle, two ends of corresponding projection, form second roller seating space of invaginated type, and corresponding first, the tooth of two locking plates is prominent, then on the protruding stopper of spoon bar, form corrugated first roller seating space, protruding stopper is arc surface, make first roller seating space by its inner basal plane to the degree of depth of apical margin according to the waveform curve difference, first, the prominent form that cooperates of the tooth of two locking plates is also different.

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