CN201125589Y

CN201125589Y - Novel anti-theft lock for man-hole cover

Info

Publication number: CN201125589Y
Application number: CNU2007200329673U
Authority: CN
Inventors: 曹均铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-28
Filing date: 2007-09-28
Publication date: 2008-10-01
Anticipated expiration: 2017-09-28

Abstract

A novel well cover antitheft lock which is composed by a primary lock, a secondary lock and a special key is disclosed,; left end of a primary lock seat (1) is provided with a key hole (2), back of the lock seat (1) is provided with a pair of ear plates (3) on which a through hole (4) is provided, a lock rod (5) traverses the through hole (4) and is clamped on the pair of ear plates (3) through a spring (6) and a retainer ring (7) between the pair of ear plates; the left end of the lock rod (5) is fixed with a baffle plate (8) which is located outside the ear plates (3) and meanwhile inside the key hole (2). The utility model is simple in structure, durable and erosion-resistant, flexible in unlocking and convenient in usage; the well cover can be opened by inserting the special key into the key hole for rotation and up lifting, besides, the installation is not limited by the thickness, structure of the well cover, so the utility model is easy for popularization and using.

Description

The new pattern manhole cover theftproof lock

Technical field

The utility model relates to a kind of new pattern manhole cover theftproof lock.

Background technology

With the immediate prior art of the present invention be the anti-money lock of a kind of well lid utility model patent (CN2328700), when lock is opened, must Key hook be forwarded to key cylinder to become about 150 degree earlier, then the Key hook tip be put in the keyhole, and Key hook forwarded to become 90 degree with key cylinder, to advancing to stretch key, screw key finds the dead bolt hole hook again, key, dead bolt certain distance of will moving, on carry key, can open well lid.As seen its process of opening well lid is quite loaded down with trivial details, uses extremely inconvenient.

Summary of the invention

The technical problem that the utility model solves: design a kind of new pattern manhole cover theftproof lock, not only simple in structure, anticorrosion durable, open flexibly, easy to use, can open well lid by carrying in the rotation of private key insertion keyhole, and install and not to be subjected to restrictions such as well lid thickness, structure, be easy to promote the use of.

Technical solution of the present utility model: a kind of new pattern manhole cover theftproof lock, form by main lock and private key, the left end of main lock lock (1) is shaped on keyhole (2), the back side of lock (1) is shaped on a pair of ear version (3), be shaped on through hole (4) on the ear version (3), locking bar (5) passes through hole (4) and is installed on a pair of ear version (3) by spring (6), the back-up ring (7) that is positioned between a pair of ear version (3), and back-up ring (7) is fixed on the locking bar (5), one end of spring (6) withstands on the ear version (3), and the other end of spring (6) withstands on the back-up ring (7); The left end of locking bar (5) is fixed with baffle plate (8), and baffle plate (8) is positioned at the outside of ear version (3), the inboard of keyhole (2).

The L-shaped structure of described lock (1), keyhole (2) are positioned at the left end outside, and the right-hand member symmetry is shaped on two fixing holes (9).

The right-hand member of described locking bar (5) is shaped on dead bolt (10), and left end is fixed with baffle plate (8) by nut (11).

Be set with butter cover (12) on the described spring (6), and butter cover (12) is stuck between a pair of ear version (3), and be filled with butter (13) between butter cover (12) and the locking bar (5).

Described main lock is furnished with secondary lock, and secondary lock is made of fixed head (21) and lock nose (22), is shaped on fixing hole (23) on the fixed head (21), and lock nose (22) is positioned at an end of fixed head (21).

Is furnished with private key (14) on the described keyhole (2), private key (14) is made of key bar (15) and the shank of the key (16), the shank of the key (16) is fixed on the upper end of key bar (15), be fitted with push rod (17) on the endoporus of key bar (15), the lower end of key bar (15) is hinged with shift fork (20), be set with back-moving spring (18) on the push rod (17), adjusting nut (19) is equipped with on the top of push rod (17), and the lower end of push rod (17) contacts with shift fork (20), and adjusting nut (19) is positioned at the top of the shank of the key (16).

The utility model compared with prior art simple in structure, anticorrosion durable, open flexibly, easy to use, insert to carry in the keyhole rotation by private key and can open well lid, and install and be not subjected to restrictions such as well lid thickness, structure, be easy to promote the use of.

Description of drawings

Fig. 1 is the structural front view of the utility model master lock,

Fig. 2 is the vertical view of Fig. 1,

Fig. 3 is the upward view of Fig. 1,

Fig. 4 is the structural front view of the utility model private key,

Fig. 5 is the structure sectional view of the utility model private key,

Fig. 6 is the structural representation of the secondary lock of the utility model,

Fig. 7 is the structural representation of the utility model unlocking condition,

Fig. 8 is a user mode schematic diagram of the present utility model.

The specific embodiment

1,2,3,4,5,6,7,8 a kind of embodiment of the present utility model is described in conjunction with the accompanying drawings.

A kind of new pattern manhole cover theftproof lock is made up of main lock, secondary lock and private key, the L-shaped structure of main lock lock (1), and the left end outside of lock (1) is shaped on keyhole (2), and the right-hand member symmetry is shaped on two fixing holes (9).The back side of lock (1) is shaped on a pair of ear version (3), be shaped on through hole (4) on the ear version (3), locking bar (5) passes through hole (4) and is installed on a pair of ear version (3) by spring (6), the back-up ring (7) that is positioned between a pair of ear version (3), and back-up ring (7) is fixed on the locking bar (5), one end of spring (6) withstands on the ear version (3), and the other end of spring (6) withstands on the back-up ring (7).Be set with butter cover (12) on the spring (6), and butter cover (12) is stuck between a pair of ear version (3), and be filled with butter (13) between butter cover (12) and the locking bar (5).The left end of locking bar (5) is fixed with baffle plate (8) by nut (11), and baffle plate (8) is positioned at the outside of ear version (3), the inboard of keyhole (2).

Secondary lock is a mould casting, is used to cooperate main lock locking well lid, reaches antitheft purpose.Constitute by fixed head (21) and lock nose (22), be shaped on fixing hole (23) on the fixed head (21), and lock nose (22) is positioned at an end of fixed head (21).

Is furnished with private key (14) on the keyhole (2), private key (14) is made of key bar (15) and the shank of the key (16), the shank of the key (16) is fixed on the upper end of key bar (15), be fitted with push rod (17) on the endoporus of key bar (15), the lower end of key bar (15) is hinged with shift fork (20), be set with back-moving spring (18) on the push rod (17), adjusting nut (19) is equipped with on the top of push rod (17), and the lower end of push rod (17) contacts with shift fork (20), and adjusting nut (19) is positioned at the top of the shank of the key (16).

Using method:

Install: will lead the two ends that lock, secondary lock are separately fixed at well lid back side center line, and regulate the position of main lock and secondary lock, and make the dead bolt of main lock and the secondary lock nose of locking to block that eaves gets final product under the walling crib.On well lid, be shaped on a key hole (23) corresponding then with the main lock key hole.

Locking: the lock nose with the pair lock inserts eaves under the walling crib earlier, closed then well lid, this moment, the dead bolt of main lock locking bar contacted with eaves on the walling crib, and dead bolt inwardly slides under the effect of well lid gravity, resetting at locking bar under the effect of spring after the well lid closure makes dead bolt insert eaves under the walling crib, locking well lid.

Open: when needing to open well lid, vertically insert in the keyhole of main lock by the key bar of the key hole on the well lid private key, pressing down adjusting nut opens shift fork by push rod promotion shift fork, then by the shank of the key screw key bar, shift fork is stuck on the baffle plate drive locking bar to move to the inside dead bolt is broken away from eaves under the walling crib, carry key bar on this moment and can open well lid.

Claims

1, a kind of new pattern manhole cover theftproof lock, form by main lock and private key, it is characterized in that: the left end of main lock lock (1) is shaped on keyhole (2), the back side of lock (1) is shaped on a pair of ear version (3), be shaped on through hole (4) on the ear version (3), locking bar (5) passes through hole (4) and is installed on a pair of ear version (3) by spring (6), the back-up ring (7) that is positioned between a pair of ear version (3), and back-up ring (7) is fixed on the locking bar (5), one end of spring (6) withstands on the ear version (3), and the other end of spring (6) withstands on the back-up ring (7); The left end of locking bar (5) is fixed with baffle plate (8), and baffle plate (8) is positioned at the outside of ear version (3), the inboard of keyhole (2).

2, new pattern manhole cover theftproof lock according to claim 1 is characterized in that: the L-shaped structure of lock (1), keyhole (2) are positioned at the left end outside, and the right-hand member symmetry is shaped on two fixing holes (9).

3, new pattern manhole cover theftproof lock according to claim 1 is characterized in that: the right-hand member of locking bar (5) is shaped on dead bolt (10), and left end is fixed with baffle plate (8) by nut (11).

4, new pattern manhole cover theftproof lock according to claim 1 is characterized in that: be set with butter cover (12) on the spring (6), and butter cover (12) is stuck between a pair of ear version (3), and be filled with butter (13) between butter cover (12) and the locking bar (5).

5, according to claim 1 or 2 or 3 or 4 described new pattern manhole cover theftproof locks, it is characterized in that: described main lock is furnished with secondary lock, secondary lock is made of fixed head (21) and lock nose (22), is shaped on fixing hole (23) on the fixed head (21), and lock nose (22) is positioned at an end of fixed head (21).

6, according to claim 1 or 2 or 3 or 4 described new pattern manhole cover theftproof locks, it is characterized in that: be furnished with private key (14) on the described keyhole (2), private key (14) is made of key bar (15) and the shank of the key (16), the shank of the key (16) is fixed on the upper end of key bar (15), be fitted with push rod (17) on the endoporus of key bar (15), the lower end of key bar (15) is hinged with shift fork (20), be set with back-moving spring (18) on the push rod (17), adjusting nut (19) is equipped with on the top of push rod (17), and the lower end of push rod (17) contacts with shift fork (20), and adjusting nut (19) is positioned at the top of the shank of the key (16).