CN2157273Y

CN2157273Y - Theftproof manhole cover lck and key

Info

Publication number: CN2157273Y
Application number: CN 93230376
Authority: CN
Inventors: 伊茂林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-11
Filing date: 1993-03-11
Publication date: 1994-02-23
Anticipated expiration: 2003-03-11

Abstract

The utility model relates to a theftproof manhole cover lock, comprising a lock body, a lock core, and a lock case. By the matching of a manhole cover and a manhole frame, the manhole cover is locked. The material of the theftproof manhole cover lock are all iron castings. Thus, the theftproof manhole cover lock has the advantages of corrosion resistance, long lifetime, and simple opening. A key which is matched with the theftproof manhole cover lock comprises a handle and a flap which can open and close. The lock core is twisted by expanding and supporting frictional resistance. The key has the advantages of complicated structure, difficult imitation, and simple operation.

Description

Theftproof manhole cover lck and key

The utility model relates to municipal facilities, particularly the theftproof lock of well lid and key.

Urban operating mechanism as sewage, rainwater, cable, water, the feed channel well lid of using on the road, often occurs stolen or the peculation phenomenon, if untimely discovery fills, the safety of serious threat pedestrian and driving at night, and because of often stolen, influence the appearance of the city, increased the urban construction spending.For this reason, many inventor's specialized designs well cover antitheft device, as the disclosed manhole antitheft lock device of Chinese patent communique (notification number: CN2108125U, the patent No. 91231269.6) solved the manhole cover anti-theft problem preferably, but blemish in an otherwise perfect thing, the pellet shot from a slingshot that its theftproof lock mainly adopts connecting rod to promote in the lock shaft is opened, because of the residing special geographical environment of well lid, cause connecting rod easily, lock shaft, pellet shot from a slingshot etc. influence the realization of its function than the corrosion of precision parts; And the key that is used to open manhole antitheft lock is fairly simple, is easy to be copied by the people.

The purpose of this utility model is to provide a kind of residing special geographical position characteristics of well lid that meets, and it is convenient to open, the lock that the life-span is long, and supporting with it use, the key that is not easy to copy.

Technical solution of the present utility model is: manhole antitheft lock, comprise lock body, lock core, lock box, lock body is below the keyhole of the outer of well lid, casting integrated with well lid, in the middle of going to the bottom, the lock body inner chamber is circular cavity, there is keyhole the centre, and the lock core loam cake of bottom tongue with lock is stuck under the inner chamber of lock body on the foundation ring; With a side of lock body symmetry fixing hole lock fit on fixed claw and the crib is arranged on the well lid; Near on the crib of lock body lock box is arranged, whole lock core is casting integrated.

With the matching used key of manhole antitheft lock, there is top that handle is arranged in the fixing handled shell, the lower end is the lifting column of truncated cone-shaped, and outer casing bottom has the fin support body, flexibly connects through swivel pin and fin, and a plurality of fins are blocked by ring spring.

According to technique scheme, during the locking well lid, earlier the well lid fixed claw is inserted in the crib fixing hole, then key is inserted in the keyhole of lock core, lift lifting column, the round platform rising of its lower end struts fin with the key hole wall of lock core combines closely, and the swing handle frictionally turns to the lock box internal lock fixed dead bolt.Operation program is just in time opposite with locking during unlatching.Because of whole theftproof lock is an ironcasting, number of components is little, simple in structure, and quality of fit requires low, so meet the residing special geographical position characteristics of well lid, is not afraid of corrosion, and it is convenient to open, long service life.With the key that anti-stealing manhole cover is used, structure is comparatively complicated, is not easy to copy.In a word, manhole antitheft lock and key, easy to operate, long service life can reach antitheft purpose.

Accompanying drawing 1 cuts open schematic diagram for the utility model master;

Accompanying drawing 2 is the utility model lock schematic top plan view;

Accompanying drawing 3 cuts open figure for the utility model key master office of looking;

According to accompanying drawing, a kind of embodiment of the present utility model is described.Manhole antitheft lock comprises lock body 1, lock core 2, lock box 8, and lock body 1 is below the outer of well lid 3 keyhole 12, and is casting integrated with well lid 3; For circular holes, there was keyhole 6 centre in the middle of lock body 1 inner chamber was gone to the bottom, and lock core 2 loam cakes of bottom tongue 7 with lock are stuck under the inner chamber of lock body 1 on the foundation ring; With a side of lock body 1 symmetry fixing hole lock fit on fixed claw 4 and the crib 9 is arranged on the well lid 3; Near on the crib 9 of lock body 1 lock box 8 is arranged.On the circular empty periphery that lock body 1 inner chamber is gone to the bottom, have one with lock body 1 one by dress projection 11, cover on the lock core 2 one with cooperate by dress projection 11 by adorning breach 10.Both cooperations be used for lock core 2 to lock body 1 inner chamber initially by dress.The outside of well lid 3 periphery upper lock bodies 1 is cast with block 13, side in lock body 1 bottom near well lid 3 centers has retaining bolt 5, block 13 blocks dead bolt 7 when being used to lock well lid 3, prevent that dead bolt from turning over dislocation, retaining bolt 5 is to screw on after lock core 2 is contained in lock body 1 inner chamber again, block dead bolt 7 when being used to open well lid 3, prevent that dead bolt from turning over dislocation, cause corresponding and lock core is come off by on dress breach 10 and the lock body 1 on the lock core 2 by adorning projection 11.Keyhole 6 on the lock core 2 is the cydariform hole.To increase frictional resistance, be convenient to key and twist.

With the matching used key of manhole antitheft lock, comprise handle 16, being fixed with in the shell 24 of handle 16 has top that handle is arranged, the lower end is the lifting column 14 of truncated cone-shaped, fin support body 20 is arranged at shell 24 bottoms, flexibly connects through swivel pin 19 and fin 21, and a plurality of fins are blocked by ring spring 22.On the shell 24 slide groove is arranged, lifting handle 18 is fixedlyed connected with lifting column 14 in slide groove, is with the fixedly lower end of return spring 17 of boss on the lifting column 14, and spring capping 15 is pushed down the upper end of return spring 17.The outer cover box of fin support body 20 is promptly located support body box 23 and is fixed as one with shell 24, and another of location support body box 23 act as and be used for the slotting dark location of key, and key bit is just in time injected in the keyhole 6 of lock core 2.

Claims

1, manhole antitheft lock, comprise lock body 1, lock core 2, lock box 8, it is characterized in that lock body 1 is below the outer of well lid 3 keyhole 12, casting integrated with well lid 3, be circular cavity in the middle of lock body 1 inner chamber is gone to the bottom, the centre has lock core 2 loam cakes of keyhole 6 bottoms tongue 7 with lock to be stuck under the inner chamber of lock body 1 on the foundation ring; With a side of lock body 1 symmetry fixing hole lock fit on fixed claw 4 and the crib 9 is arranged on the well lid 3; Near on the crib 9 of lock body 1 lock box 8 is arranged.

2, manhole antitheft lock according to claim 1 is characterized in that, on the circular empty periphery that lock body 1 inner chamber is gone to the bottom, have one with lock body 1 one by dress projection 11, cover on the lock core 2 one with cooperate by dress projection 11 by adorning breach 10.

3, manhole antitheft lock according to claim 2 is characterized in that being provided with block 13 in the outside of well lid 3 periphery upper lock bodies 1, and the side in lock body 1 bottom near well lid 3 centers has retaining bolt 5.

4, manhole antitheft lock according to claim 1 is characterized in that the keyhole 6 on the lock core 2 is the cydariform hole.

5, with the matching used key of manhole antitheft lock, comprise handle 16, it is characterized in that being fixed with in the shell 24 of handle 16 has top that handle is arranged, the lower end is the lifting column 14 of truncated cone-shaped, fin support body 20 is arranged at shell 24 bottoms, flexibly connect through swivel pin 19 and fin 21, a plurality of fins are blocked by ring spring 22.

6, the matching used key of according to claim 5 and manhole antitheft lock, it is characterized in that, on the shell 24 slide groove is arranged, lifting handle 18 is fixedlyed connected with lifting column 14 in slide groove, be with the fixedly lower end of return spring 17 of boss on the lifting column 14, spring capping 15 is pushed down the upper end of return spring 17.

7,, it is characterized in that the outer cover box location support body box 23 of fin support body 20 is fixed as one with shell 24 according to claim 5 or the 6 described and matching used keys of manhole antitheft lock.