CN201246034Y - U-shaped transformer theft-proof lock - Google Patents

Abstract

The utility model discloses a U-shaped anti-theft lock for a transformer. The anti-theft lock comprises a lock sleeve, a lock body and a lock core. The cross section of the lock sleeve is I-shaped with a blind hole at the lower end, a cylindrical cavity for positioning the upper opening of the lock sleeve is formed at the upper part of the lock body, a through hole for penetrating a bolt is formed at the lower part of the lock body, a cylindrical cavity for positioning the lock core and a lock tongue and enabling the lock core and the lock tongue to rotate is formed on the right of the lock body, the cavity is communicated with the cylindrical cavity formed on the lock body and used for positioning the upper opening of the lock sleeve, the distance between the right end surface of the lock tongue and the end surface of the lock tongue cavity is smaller than the difference between the radii of the two circular arc surfaces of the lock sleeve, and at the same time, the distance between the left end surface of the lock tongue and left end surface of the lock core is larger than the difference between the radii of the two circular arc surfaces of the lock sleeve. The anti-theft lock has the advantages of simple structure, firmness, reliability and good anti-theft effect.

Description

A kind of " U " type transformer anti-theft lock

Technical field

The utility model relates to a kind of lock class, particularly relates to a kind of " U " transformer anti-theft lock.

Background technology

The theftproof lock of existing transformer adopts common lock core and lock body mostly, this kind structure is more open, simple, though played certain antitheft effect, but the problem that exists is: the one, and key is imitated easily, the 2nd, lock core is opened easily, the 3rd, lock tube is destroyed easily, therefore adopts the multilayer insurance all easily stolen.

Summary of the invention

The utility model has overcome shortcoming of the prior art, provides a kind of compact conformation, solid and reliable transformer anti-theft to lock.

In order to solve the technical problem of above-mentioned existence, the utility model adopts following technical proposals: a kind of " U " type transformer anti-theft lock, comprise lock tube, lock body and lock core, the cross section of described lock tube is the I shape that the lower end is provided with blind hole, the cylindrical cavity of placing described lock tube upper end open is established on the top of described lock body, described lock body bottom is provided with the through hole that can pass bolt, the right of described lock body is provided with one and can places lock core and dead bolt and can make lock core and the cylindrical cavity of dead bolt rotation, the cylindrical cavity of placing the upper end open of lock tube on this cavity and the described lock body connects, the distance of described dead bolt right side and dead bolt cavity end face is poor less than lock tube two arc surface radiuses, and the distance of described dead bolt left side and lock core left side is poor greater than lock tube two arc surface radiuses.

The top plan of described lock tube is shaped as circle.

Have between the through hole on described lock core and the lock body less than 0.5 mm clearance, described lock core is a cylinder.

" U " of the present utility model type transformer anti-theft lock compared with prior art, its beneficial effect is: compact conformation, be difficult for destroyed, owing between lock body and the lock core certain clearance is arranged, so any instrument except that using key all is difficult to dead bolt is dialled back in the lock core, thereby reaches good anti-theft effect.

Description of drawings

Fig. 1 is the structural representation of the utility model " U " type transformer anti-theft lock;

Fig. 2 be among Fig. 1 along A-A to sectional view;

Fig. 3 be Fig. 1 B to partial view.

Among the figure: 1. lock body, 2. lock tube, 3. lock core, 4. dead bolt, 5. lock core groove, 6. bolt, 7. pad, 8. transformer cover plate, 9. screwed hole, 10. lock core hole, 11. lock tongue cavities, 12. pads.

The specific embodiment

The utility model will be further described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 shows the internal construction of the utility model " U " type transformer anti-theft lock.Working state figure for novel " U " type transformer anti-theft lock.In Fig. 1, lock body 1 top is provided with a cylindrical cavity, is used to lay lock tube 2, and the bottom of lock tube 2 and right part are respectively equipped with two cavity screwed holes 9 and the lock core hole 10 that connects.The non-standard bolt 6 of interior five sides that is installed in lock tube 2 lower cavity passes set through hole in lock body 1 top and the through hole on the transformer cover plate 8, match with the screwed hole 9 that is located at lock body 1 bottom, pad 7 and pad 12 lay respectively between the upper and lower faces and lock body 1 of transformer cover plate 8.The bottom of lock tube 2 is provided with the cavity that can hold bolt 6 heads, and the top of lock tube 2 is mutually concordant with the cylindrical cavity upper surface of lock body 1, and the right part of lock body 1 is provided with lock tongue cavity 11 and lock core hole 10, and lock core 3 is positioned at lock core hole 10.Be located at the dead bolt 4 on the lock core 3, its right-hand member is stuck on the inner face of lock tongue cavity 11.On the end face of lock core hole 10, be provided with lock core groove 5.

Fig. 2 shows the situation that lock core 3 matches with lock tube 2, and shown in the figure is that dead bolt 4 inserts the state that is in pinning in the lock tongue cavity 11.

Fig. 3 has shown lock core groove 5 and has been positioned on the side of lock core, and its width is the width of a screwdriver, and the degree of depth is 2～3 millimeters.

This kind structure is removed for preventing lock tube 2, the dead bolt on the lock core 34 is stuck on the right side in lock body 1 upper lock tongue chamber 11, and this moment, the left end of lock core 3 stretched in the right part cavity of lock tube 2, moved up to prevent lock tube 2.Because this structure only has dead bolt 4 to be stuck on the inner face of lock body 1 top dead bolt cavity 11, lock core 3 and lock core hole 10 have certain clearance, so lock core 3 comprises that dead bolt 4 can radially rotation in lock core hole 10.Have only one of employing to be similar to the same instrument of screwdriver, it is stretched in the lock core groove 5, withstand on lock core 3 circumference and exert oneself slightly, and then use the cruciate flower shape key rotation gently that matches with lock core 3, dead bolt 4 is retracted in the lock core 3, thereby by moving right in the lock core hole 10, the left side of lock core 3 is shifted out outside the shape chamber of lock tube 2 lock core 3.Can take out lock tube 2, unclamp bolt 6 with special-purpose interior five side's wrench again, and then successively whole lock is opened.

This transformer anti-stolen lock, when work, earlier have interior five sides' non-standard bolt 6, pad 12, pad 7 fastening transformer cover plates 8 in the screwed hole 9 of lock body 1 with special-purpose interior five side's wrench handle, cover on bolt 6 with lock tube 2 again, and then with key dead bolt 4 is screwed in the lock cores 3, lock core 3 is put into lock core hole 10, the left side of lock core 3 contacts with the cambered surface of lock tube 2, unclamp key, this moment, dead bolt 4 just sticked within the lock tongue cavity 11.This moment, its transformer anti-stolen lock just can play good burglar-proof result.In the time of need opening, stretch in the lock core groove 5 with the instrument that is similar to screwdriver, withstand on and prevent slightly firmly on lock core 3 circumference that lock core 3 from rotating, with key dead bolt 4 is screwed in to the lock core 3 again, lock core 3 is moved to right, its left side is shifted out outside the lock tube body, use supporting magnet again, turn on bolt 6 with interior five side's wrench of special use then and can open lockset lock tube 2 sucking-off in the lock body 1.

Claims (3)

1 one kinds of " U " type transformer anti-theft locks, comprise lock body, lock tube and lock core, it is characterized in that: the cross section of described lock tube is the I shape that the lower end is provided with blind hole, the cylindrical cavity of placing described lock tube upper end open is established on the top of described lock body, described lock body bottom is provided with the through hole that can pass bolt, the right of described lock body is provided with one and can places lock core and dead bolt and can make lock core and the cylindrical cavity of dead bolt rotation, the cylindrical cavity of placing the upper end open of lock tube on this cavity and the described lock body connects, the distance of described dead bolt right side and dead bolt cavity end face is poor less than lock tube two arc surface radiuses, and the distance of while described dead bolt left side and lock core left side is poor greater than lock tube two arc surface radiuses.

2 " U " according to claim 1 type transformer anti-theft lock, it is characterized in that: the top plan of lock tube is shaped as circle.

3 " U " according to claim 1 type transformer anti-theft lock, it is characterized in that: have between the through hole on described lock core and the lock body less than 0.5 mm clearance, described lock core is a cylinder.

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