CN2346892Y - Anti-theft lock of inspection shaft cover - Google Patents

Abstract

The utility model relates to an anti-theft lock of an inspection shaft cover, belonging to the lock class. The anti-theft lock of the inspection shaft cover is composed of a base which is provided with a through hole, a middle hole arranged at the middle, a limit screw and a v-shaped spring piece that are arranged at the lower side, a lock core whose middle hole is provided with a key hole, a rod-shaped bolt connected with the lock core, and more than two through holes 4-4 which are arranged in the base and are provided with a spring and different length pin tumblers at the interior. The pin tumbler arranged in the through hole (4-4) is extended into the key hole of the lock core, and one end of the through hole is sealed by a choke plug. The utility model has the advantages of high mechanical cipher antitheft performance, simple and firm structure, convenient installation and operation, convenient generalization and application, etc.

Description

Anti-theft lock for inspection well cover

The utility model relates to a kind of anti-theft lock for inspection well cover, belongs to the anti-theft locking device of inspection shaft lid.

The city road inspection shaft lid is stolen because of no anti-theft measure, causes various accidents constantly to take place, and causes the loss of unnecessary people's death and property.

China utility model patent CN2197428Y discloses a kind of " a kind of novel anti-theft locking device of inspection shaft lid ", this patent adopts a kind of special tool to open Inspection shaft cover lock, can play certain anti-effect of arbitrarily opening, but this special tool has versatility, very easily the inspection shaft lid is opened with other similar tool.

The purpose of this utility model be avoid the above-mentioned weak point of prior art and provide a kind of simple in structure, theftproof performance good, reliable anti-theft lock for inspection well cover is easy to implement.

The purpose of this utility model reaches by following technical measures.

The utility model is provided with a pedestal, this pedestal is provided with through hole, and the cushion block of through hole arranged in the middle of being provided with in the above, in order to the height of regulating dead bolt and be convenient to rain-out and fall foul between pedestal and the inspection shaft lid, pass the pedestal through hole with screw and cover with inspection shaft with the cushion block through hole and be connected.On pedestal, be provided with mesopore, in this mesopore, be provided with the T shape lock core that has keyhole, be provided with on this T shape lock core top and prevent that rainwater, dust etc. from entering the protective cover of keyhole.Be provided with the through hole that the spring pellet shot from a slingshot different with length arranged in plural on the pedestal of keyhole side, the pellet shot from a slingshot in this plural through hole heads into lock core keyhole, and the other end of the plural through hole of pedestal is sealed with screw silently.

The lower end of T shape lock core is connected with rivet with a shaft-like dead bolt, and two stop screws and 7 font spring leafs are housed below pedestal, shaft-like dead bolt is limited between two stop screws rotates, and limits the reversing scope of shaft-like dead bolt with 7 font spring leafs.

Open or close key of the present utility model and be connected with a telescopic keying instrument through latch.

The utility model compared with prior art has following advantage:

1, the plural built-in spring of this real new arrangement pellet shot from a slingshot hole different with the length specification, promptly can be made into difform key, as being example with the pellet shot from a slingshot that five pellet shot from a slingshot holes and seven kinds of specifications are set, the key that can form 14707 kinds of shapes, be enough to guarantee not have in the same city theftproof lock of same mechanical password, greatly improved theftproof performance.

2, the utility model is simple in structure, firm, reliability is high, easy to install, easy to utilize.

The explanation of accompanying drawing drawing:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the telescopic keying tool construction schematic diagram that has key.

Following the utility model will describe in detail embodiment (in conjunction with the accompanying drawings).

The novel pedestal 4 that is provided with of this reality shown in Figure 1, on pedestal 4, be provided with through hole 4-1 and be provided with the middle cushion block 5 that through hole 5-1 is arranged in the above, passing pedestal through hole 4-1 with screw 4-2 is connected with inspection shaft lid 6 with cushion block through hole 5-1, pedestal 4 is provided with mesopore 4-3, in this pedestal mesopore 4-3, be provided with the T shape lock core 10 that has keyhole, be provided with protective cover 9 on these T shape lock core 10 tops.On the other pedestal 4 of lock core keyhole 10-1, be provided with the through hole 4-4 that spring 7 pellet shot from a slingshot different with length 8 arranged in plural, pellet shot from a slingshot 8 among these two above through hole 4-4 heads into lock core keyhole 10-1, and the other end of the plural through hole 4-4 of pedestal 4 is sealed with screw 4-5 silently.

T shape lock core 10 lower ends are connected with shaft-like dead bolt 2 usefulness rivets 1.

Below pedestal 4, be equiped with two stop screws 3 and be fixed on 7 font spring leafs 13 on the pedestal 4 with screw 12.

Key 14 is connected with a telescopic keying instrument 16 through latch 15.

Use when implementing, the key 14 that unloads the telescopic keying instrument of protective cover 9 usefulness termination injects lock core keyhole 10-1, key 14, lock core 10 rotates thereupon, the shaft-like dead bolt 2 that is connected with lock core 10 rotates thereupon, and shaft-like dead bolt 2 terminations and raised platform around a well 11 break away from, and inspection shaft lid 6 can be opened.

The locking of inspection shaft lid 6: the key 14 with telescopic keying instrument inserts lock core keyhole 10-1, and along with the rotation of key 14, shaft-like dead bolt 2 bolts that are connected with lock core 10 are on raised platform around a well 11, and no adaptive key, inspection shaft cover 6 promptly can not be opened, and reaches antitheft purpose.

Claims (2)

1, a kind of anti-theft lock for inspection well cover is characterized in that:

A) pedestal is provided with through hole [4-1] and mesopore [4-3], in this mesopore [4-3], be provided with the T shape lock core [10] that has keyhole [10-1], pedestal [4] through hole [4-1] is provided with the have through hole cushion block [5] of [5-1], this T shape lock core [10] top is provided with protective cover [9], on the other pedestal [4] of lock core keyhole [10-1], be provided with the through hole [4-4] that spring [7] pellet shot from a slingshot [8] different with length arranged in plural, pellet shot from a slingshot [8] in these two above through holes [4-4] heads into lock core keyhole [10-1], the other end of the plural through hole [4-4] of pedestal [4] is sealed with screw [4-5] silently

B) T shape lock core [10] lower end is connected with rivet [1] with a shaft-like dead bolt [2],

C) be equiped with stop screw [3] and 7 font spring leafs [13] on below pedestal [4].

2, anti-theft lock for inspection well cover according to claim 1 is characterized in that key [14] is connected with a telescopic keying instrument [16] through latch [15].

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