CN2797550Y - Theft-proof lock - Google Patents

Abstract

The utility model discloses a theft-proof lock which comprises an outer lock body, an inner lock body, a fixing plate of the outer and the inner lock bodies, and a key. The lock body of the outer lock body is sheathed with an outer sleeve of the outer lock body. The lock body and the outer sleeve of the outer lock body are carved with matched screw threads and at least one set of matched concave-convex gaps. The gaps are fixed by fixing pins. The unlocking and the locking of the lock adopt a clutch closing mechanism. When the utility model is unlocked, the key is not rotated, and only a key shaft core is rotated. The utility model has the advantages of convenient installation and good theft-proof performance, and is suitable for households, offices, hotels, etc.

Description

A kind of theftproof lock

Technical field

The utility model relates to the lockset manufacturing, more specifically to a kind of theftproof lock.

Background technology

At present, various slotting ostium locks are arranged on the market, because the outer lock body of these locks is only used outer lock body of two bolt and outer lock body fixed head, so just use unlocking tool as shown in figure 12 to be enclosed within on the external circle of external lock easily, clamp stud, firmly rotate unlocking tool, just can cut off two bolts of fixing outer lock body and outer lock body fixed head, outer lock body is separated from lockhole, thereby the lock breakdown. so just give thief's opportunity, caused these to lock the antitheft effect that does not reach truly.

Summary of the invention

The purpose of this utility model overcomes deficiency of the prior art exactly, and a kind of structure uniqueness is provided, the theftproof lock that can't open by force with unlocking tool.

The purpose of this utility model is achieved by following technical proposals.

Theftproof lock of the present utility model comprises outer lock body, interior lock body, inside and outside lock fixed head and key, outer lock body lock is with the external cover of external lock on one's body, outer lock body lock body and external lock be external to put and is carved with the screw thread and the rarest one group of concavo-convex breach that match and matches, and fixes with steady pin on the breach; Interior lock body, outer lock body and inside and outside lock body fixed head are in the same place with two bolt, and set bolt opening direction and interior lock body dead bolt are equidirectional.The utility model theftproof lock, the clutch closing structure is adopted in the lock opening and closing.Matched key is inserted lockhole, the locking plate alignment, the locking plate respective panels will move to locking plate, drives 2 card silks and rotates an angle, thereby drive a gear forward with another gear closure, just can rotate internal lock, locking breakdown.Insert lockhole if not supporting key, two gears just can not closure can only dally, can not be the lock breakdown.The utility model can not be separated internal lock when lock cuts out, and key is when unblanking, as long as supporting key is inserted lockhole, key axle core just can be the lock breakdown.

The utility model has the advantages that easy for installationly, accurate, theftproof performance is good, can be used in family, office, hotel.

Description of drawings

Fig. 1 is the structural representation of theftproof lock;

Fig. 2 is outer lock body upward view;

Fig. 3 is outer lock body sectional view;

Fig. 4 (A), (B) are the outline drawings of the outer lock body different angles of theftproof lock;

Fig. 5 is the gear A structural representation;

Fig. 6 is the gear B structural representation;

Fig. 7 is the Key structure schematic diagram;

Fig. 8 is interior lock body structure schematic diagram;

Fig. 9 is inside and outside lock body fixed head structural representation;

Figure 10 is inside and outside lock body fixed head lateral view;

Figure 11 is the external cover sectional view of external lock;

Figure 12 is the external cover upward view of external lock;

Figure 13 is the locking plate structure chart;

Figure 14 is the unlocking tool structural representation;

Figure 15 is a card silk B structure chart;

Figure 16 is a card silk A structure chart;

Figure 17 is a locking plate respective panels front view;

Figure 18 is a locking plate respective panels lateral view.

Among the figure: interior lock body 1, outer lock body 2, key 3, key axle core A4, key axle core B5, the external cover 6 of external lock, card silk A7, gear A 8, gear B 9, clutch shaft 10, lock pin 11, card silk B12, key axle core hole 13, locking plate respective panels spring eye 14, breach 15, groove 16, screw thread 17, chuck A18, chuck B19, hexagon socket head cap screw 20, lockhole 21, locking plate respective panels mouth 22, filament threaded port 23, inside and outside lock body is screw socket 24 fixedly.

The specific embodiment

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

In the drawings, theftproof lock comprises outer lock body 2, interior lock body 1, inside and outside lock body fixed head and key 3, the lock of lock body 2 adds screw thread 17 and one group of breach 15 on one's body outside, the lock body of lock body 2 adds an external cover 6 of the external lock that matches outward outside again, with the concavo-convex breach between fixing outer lock body 2 of steady pin and the external cover 6 of external lock, with the outer lock body 2 of two bolt, interior lock body 1 and inside and outside lock body fixed head, set bolt opening direction and interior lock body 1 dead bolt are equidirectional, locking plate is installed in outer lock body groove 16 places, above the locking plate indent spring is installed, the locking plate respective panels is vertically mounted on the locking plate recess direction, another spring also is installed on the locking plate respective panels, and lock pin 11 is connected with clutch shaft 10 usefulness pins, and key axle core A4 is connected with pin with key axle core B5.The clutch closing structure is adopted in the lock opening and closing, supporting key 3 is inserted lockhole 21, key 3 does not rotate, key axle core A4,6 locking plates align under spring action, and the locking plate respective panels will move to locking plate under the respective springs effect, drive card silk A7 and Ka Si B12 and rotate an angle, thereby gear B 9 forward with gear A 8 closures, just can rotate interior lock body 1, the lock breakdown.Insert 21, two gears of lockhole if not supporting key 3 and just can not closure can only dally, can not be the lock breakdown.

Claims (4)

1, a kind of theftproof lock, comprise outer lock body, interior lock body, inside and outside lock fixed head and key, it is characterized in that outer lock body lock is with the external cover of external lock on one's body, outer lock body lock body and external lock be external to put and is carved with the screw thread and the rarest one group of concavo-convex breach that match and matches, and fixes with steady pin on the breach.

2, the described theftproof lock of claim 1 is characterized in that having in the key key axle core, and key axle core is rotatable.

3, claim 1 or 2 described theftproof locks is characterized in that locking opening and closing and adopt the clutch closing structure.

4, the described theftproof lock of claim 3 is characterized in that outer lock body fixed head upper and lower side respectively has a screw and interior lock body upper and lower side screw to match, and with bolt interior lock body is fixed on the outer lock body fixed head, and bolt opening direction and interior lock body dead bolt are equidirectional.

Images