CN2467704Y - Raking-unlocking lock and its key for manhole cover - Google Patents

Abstract

The utility model relates to a manhole cover lock of a hook unlocking type and a key thereof, which belongs to the field of the lockset. The utility model is characterized in that the key comprises a downward pressing and resetting mechanism, a double hook and an opening mechanism, wherein the downward pressing and resetting mechanism is sheathed in a key body and is composed of a press disk, a spring and a press rod, the double hook is connected with the press rod and can be opened towards both sides, and the opening mechanism of the lock is formed by an opening and closing latch which can insert an upper and a lower latch grooves of a lock cover into opening grooves at both sides of a lock body. The lock comprises an opening and closing device of a manhole cover, and the opening and closing device is formed by the lock cover with the upper and the lower latch grooves and the lock body of which the both radial sides are provided with the opening and closing latch and lock bolts. The lockset is convenient to open and close, and has good safety and anti-theft performance.

Description

Collude open type pattern manhole cover lock and key thereof

Collude open type pattern manhole cover lock and key thereof and belong to lockset manufacturing technology field.

Its theftproof performance of manhole cover anti-theft equipment of present common use is also poor, and the thief uses fairly simple means still well lid can be stolen.

The purpose of this utility model is, provide a kind of be contained in below the well lid, security performance is good colludes open type pattern manhole cover lock and key thereof.

Of the present utility model being characterised in that, the described open type pattern manhole cover lock that colludes contains: locking closure, lock body, switching latch that is positioned at lock body both-side opening groove radially symmetrically and the locking bolt that radially is connected with lock body.

Feature of the present utility model also is, the key supporting with described pattern manhole cover lock contains: platen, and the depression bar that links to each other with platen, pine is enclosed within key body between depression bar and the lock body, be clipped in two between depression bar and the key body and collude return spring, and pair colluding of linking to each other with key depression bar lower end.

Use proof: its security performance is good, and it is also convenient to open.

In order in conjunction with the embodiments the utility model to be described in detail below, existing accompanying drawing number and title brief introduction the present specification use is as follows:

Fig. 1, collude open type pattern manhole cover lock and key thereof the vertical right side cross-sectional view under in working order;

The sectional view of Fig. 2, Fig. 1;

The two hook parts of the key of Fig. 3, Fig. 1 are divided to view.

Embodiment:

Ask for an interview Fig. 1-3.The 1st, the key platen.The 2nd, two return springs that collude.The 3rd, the key depression bar that links to each other with platen.The 4th, have the key body of symmetrical channels in the both sides, middle and lower part.The 5th, two return alignment pins that collude.6 and 8 collude about being.7 and 9 collude rotating shaft about being.The 10th, about collude connecting axle with depression bar.The 11st, locking closure.The 12nd, lock body.13 and 14 open and close latch about being.The 15th, locking bolt, it is to be connected with lock body with screw thread, be in during locking the well lid seat ring below.

When desiring to open well lid, earlier the garden hole of key body 4 along the tape guide of lock body 12 inserted; Depress platen 1, make 6 and 8 two to collude to both sides and open up into horizontal level; The tooth that colludes is at this time just aimed at 13 and 14 two automatically and is opened and closed latch; Upwards mention key, two open and close the following latch groove that latch just breaks away from locking closure, the enable possition that this should lock just; With key dextrorotation, key body 4 drive lock bodies 12 interlock locking bolt 15 right-hand rotations more just make locking bolt shift out the bottom of well lid seat ring again, and at this moment also lid is in open mode.As long as left-handed key, the same process just can make this lock be in locked position of coupler, and well lid is in closed condition.Unblank as colluding key without depthkeeping size two, open and close the last latch groove that latch is easy to inject locking closure, at this moment, this lock still can not be opened.This shows that it has good safe antitheft performance.

Claims (3)

1, a kind of open type pattern manhole cover lock that colludes contains locking closure, lock body and switching latch, it is characterized in that, it contains: pine is enclosed within the locking closure of the outer band upper and lower cotter joint groove of lock body, radially inner side has the keyhole of gathering sill and the lock body of radial outside band opening pod, be contained in the radially switching latch in the both-side opening pod of lock body, the locking bolt that radially is threaded with lock body.

2, a kind of key that colludes the open type pattern manhole cover lock, it is characterized in that, it contains: the key platen, coupled key depression bar, pine be enclosed within that key press dry and lock body between and the both sides, middle and lower part have the key body of symmetrical pod, be clipped in the two back-moving springs that collude between key platen and key body, two the colluding that links to each other with the depression bar lower end.

3, the formula pattern manhole cover lock that colludes according to claim 1 is characterized in that: have the screw that can link to each other with well lid on the described locking closure.