CN2535507Y - Manhole lock - Google Patents

Abstract

The utility model relates to an underground well lock used for preventing theft and belongs to the lock with special purpose. The underground well lock consists essentially of a lock body, a lock core and a key. The lock body is provided with a lock hole and a key hole. The lock core is installed inside the lock hole of the lock body and consists essentially of a lock tongue and a tongue core. The lock tongue matches with one end of the tongue core in slipping manner, and the other end of the tongue core is fixed with the lock body and is fixedly provided with a magnet block. The front end of the lock tongue is fixedly provided with the magnet block, and a lock rod at the back end of the lock tongue is provided with screw threads. The key hole is vertical to the lock hole and is placed at the position of the lock rod at the back part of the lock hole. The key hole and the lock hole are communicated. The key is provided with screw threads which match with the lock rod screw threads at the back part of the lock core. The utility model has reasonable structure and can provide insurance against theft.

Description

Manhole lock

Technical field

The utility model relates to a kind of antitheft Manhole lock that is used for, and belongs to the lock class of specific use.

Background technology

At present, in the road on both sides of the road or other place, the face of land need usually be provided with drain cap, Cover for manhole and other various ground well lid because of urban construction, to satisfy needs such as draining or other underground utilities maintenances.Yet some artificially satisfies individual purpose or needs are often stolen drain cap, Cover for manhole or ground well lid, make these trenches, ground well become " trap ", not only destroy cities and towns and rural environmental beauty, but also entail dangers to is to the person and property safety, cause bad societal consequence, though there are some ground well lids to install Manhole lock additional now, the safety of lock is relatively poor, lock can be opened by sled, means such as dial, make lock lose protective action.

Summary of the invention

The purpose of this utility model is a kind of Manhole lock of design, and it is rational in infrastructure, not only can prevent losing of the various lids in ground, and high safety, and lock is difficult for being pried open.

Manhole lock of the present utility model is mainly by lock body, lock core and key constitute, have lockhole and keyhole on the lock body, lock core is installed in the lockhole of lock body, lock core mainly is made of dead bolt and tongue core, one end of dead bolt and tongue core is slidingly matched, the other end and the lock body of tongue core are fixed, this end is fixed with magnet piece, the front end of dead bolt is fixed with the magnet piece identical with the magnet piece polarity of tongue core, be threaded on the locking bar in the middle of the dead bolt, the dead bolt rear end is a tongue, reach on the locking bar of distance between two magnet pieces and centre is greater than the length of tongue, and keyhole is linked up with lockhole mutually perpendicular to lockhole, and be positioned at the locking bar place in the middle of the lockhole, have screw thread on the key with the locking bar threads engaged of lock core.

The reach of the locking bar of the Manhole lock that the utility model is designed is greater than the aperture of keyhole.

The keyhole of the Manhole lock that the utility model is designed and lockhole be not in same plane.

The keyhole of the Manhole lock that the utility model is designed is up-small and down-big shoulder hole, stops up to prevent keyhole.

The lock body of the Manhole lock that the utility model is designed is the lock body of corrosion-resistant nonmagnetic substance.

The lock body of the Manhole lock that the utility model is designed, lock core and key are rust stable lock body, lock core and key.

The designed Manhole lock of the utility model is when using, lock can be installed on the inboard of facilities such as well lid, Cover for manhole, at the fixing lock dog that matches with tongue in the edge of ground well relative or trench with the lock core front end, under the general situation because the magnet piece of the front end of dead bolt is identical with the magnet piece polarity of tongue core, therefore under the effect of magnetic force, tongue is positioned at the lock body outside, by in keyhole, inserting key, key, the control tongue moves, and tongue is goed deep in the lock dog, cooperates with lock dog, this moment, well lid or Cover for manhole were lockable, and can not start or open; And because the reach of locking bar is greater than the aperture of lockhole, therefore stretching into other instrument that keyhole attempts to push tongue aside is impossible with cooperating of lock dog, moreover the dead bolt front end is subjected to stronger magnetic repulsion, in case breaking away from, other instrument contacts with dead bolt, the tongue of dead bolt front end stretches out immediately with lock dog and cooperates, and the pick-proof ability is strong.And need open well lid or Cover for manhole when needing repairing or fixing a breakdown the time, must insert the key counter-rotating from keyhole, and make the disengaging of dead bolt front end and lock dog, return in the lock body, well lid or Cover for manhole can be opened.

The advantage of the Manhole lock that the utility model is designed is:

1. rational in infrastructure, be easy to install;

2. compliance is strong, can under adverse circumstances such as humidity, corrosive gas, dust, use, and non-corroding;

3. antitheft, pick-proof is strong, helps safeguarding underground installation and personal safety;

The designed Manhole lock of the utility model mainly is applicable to the facility that the face of land hides, and as ground well lid, Cover for manhole etc., also can be used for others.

Description of drawings

Fig. 1 is the structural representation of the lock body of the designed Manhole lock of the utility model.

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

Fig. 3 is the structural representation of the lock core of the designed Manhole lock of the utility model.

The specific embodiment

In conjunction with specific embodiments the structure and the embodiment of the designed Manhole lock of the utility model is further described with reference to the accompanying drawings below.

Embodiment

Manhole lock as shown in Figure 1, 2, 3 mainly is made up of lock body 1 and lock core 2, and lock body 1 is made by aluminium as shown in Figure 1, 2, has lockhole 4 and keyhole 5 on it.Lockhole 4 and keyhole 5 are communicated with each other and are vertical mutually, and its center line is not in same plane.Lock core 2 is installed in the lockhole 4 as shown in Figure 3.Lock core 2 is made of dead bolt 7 and tongue core 8, dead bolt 7 is slidingly matched with an end of tongue core 8, the other end of tongue core 8 and lock body 1 are fixing, this end is fixed with magnet piece 9, the front end of dead bolt 7 is fixed with the magnet piece 10 identical with magnet piece 9 polarity of tongue core, be threaded 6 on the locking bar in the middle of the dead bolt 7, dead bolt 7 rear ends are tongue 3, two magnet pieces 9, screw thread 6 length on the locking bar of distance between 10 and centre are greater than the length of tongue 3, and be positioned at the locking bar place in the middle of the lockhole, the length of screw thread 6 is also greater than the aperture of keyhole 5, has the screw thread with the locking bar threads engaged of lock core 2 on the key.Lock body 1 and lock core 2 are made by the rust resistance material.

This Manhole lock mainly is installed in the face of land facilities such as ground well lid, Cover for manhole.Tongue 3 stretches out outside the lock body 1 under the active force that magnet piece 9,10 repels mutually generally speaking, inserts in the lock dog that cooperates installation with lock body 1 of the other end, and keeps closely cooperating, and can not arbitrarily open.When face of land facilities such as local well lid or Cover for manhole need be opened, must insert in the keyhole 5 with key, make key with screw thread cooperate with screw thread 6 on the locking bar, pass through key, the repulsive force that overcomes magnet piece is contracted in the lock body 1 tongue 3, well lid could be opened.Can prevent effectively that thus phenomenons such as face of land facility is stolen, stolen, and Manhole lock is prized, well lid is lost from taking place, and safeguards social safety.

Claims (6)

1. Manhole lock, mainly by lock body, lock core and key constitute, have lockhole and keyhole on the lock body, lock core is installed in the lockhole of lock body, it is characterized in that: lock core mainly is made of dead bolt and tongue core, one end of dead bolt and tongue core is slidingly matched, the other end and the lock body of tongue core are fixed, this end is fixed with magnet piece, the front end of dead bolt is fixed with the magnet piece identical with the magnet piece polarity of tongue core, be threaded on the locking bar in the middle of the dead bolt, the dead bolt rear end is a tongue, and the reach on the locking bar of distance between two magnet pieces and centre is greater than the length of tongue, keyhole is perpendicular to lockhole, link up mutually with lockhole, and be positioned at locking bar place in the middle of the lockhole, have screw thread on the key with the locking bar threads engaged of lock core.

2. Manhole lock according to claim 1, its feature also is: the reach of locking bar is greater than the aperture of keyhole.

3. Manhole lock according to claim 1, its feature also is: keyhole and lockhole be not in same plane.

4. Manhole lock according to claim 1, its feature also is: keyhole is up-small and down-big shoulder hole.

5. Manhole lock according to claim 1, its feature also is: lock body is the lock body of corrosion-resistant nonmagnetic substance.

6. Manhole lock according to claim 1, its feature also is: lock body, lock core and key are rust stable lock body, lock core and key.

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