CN203742303U - Embedded type well lid lock - Google Patents

Abstract

The utility model discloses an embedded type well lid lock which comprises a well base and a well lid. A built-in lock mechanism is fixed below the well lid. The built-in mechanism is formed by an outer tooth-like key, a guide groove, a rack lock cylinder and a lock cylinder spring. The rack lock cylinder is arranged in the guide groove in a sliding mode. The lock cylinder spring is arranged between the rack lock cylinder and the bottom of the guide groove. The portion, located on the portion of the rack lock cylinder, of the well lid is provided with a through hole. The outer tooth-like key extends into the through hole and is meshed with the rack lock cylinder. The inner wall of the well base is provided with a cavity containing the extension part of the rack lock cylinder. The built-in lock mechanism is fixedly connected to the portion below the well lid, forms a lock latch with the well base directly, and can be opened only by a special matched key; the lock has the advantages of preventing the well lid from being lost, and being good in safety performance and attractive and elegant in overall appearance, and the built-in lock mechanism is not prone to rusting.

Description

Embedded pattern manhole cover lock

Technical field

The utility model relates to road administration field of engineering technology, especially a kind of embedded pattern manhole cover lock.

Background technology

On road, there are a lot of manholes, controlled valve and important plant and instrument are housed in well, for preventing facility in artificial destruction well, various manholes have all been equipped with to well lid or corresponding anti-unlocking apparatus.Pattern manhole cover lock was without lock or bright lock well lid in the past, the behavior of easily losing well lid without lock well lid, and well lid causes pedestrian's potential safety hazard after losing, facility in well also easily occurs and suffer artificial destruction, causes unnecessary loss.Bright lock well lid is not attractive in appearance, and external lockset can become roadblock, easily trips pedestrian, cuts lockset external easily by artificial destruction.And current various well lid, if sewer, water meter chamber, telecommunication well lid are all ironys, easily gets rusty, and there is no anti-theft measure, and well lid is often stolen.

Utility model content

The utility model, for the deficiencies in the prior art, proposes a kind of embedded pattern manhole cover lock, and structure is ingenious, and safety is good.

In order to realize above-mentioned utility model object, the utility model provides following technical scheme: a kind of embedded pattern manhole cover lock, comprise well seat and well lid, this well lid below is fixed with built-in lock mechanism, this built-in lock mechanism is made up of outer dentation key, gathering sill, tooth bar lock core and lock core spring, this tooth bar lock core is located in this gathering sill slidably, and this lock core spring is located between this tooth bar lock core and the bottom land of this gathering sill; This well lid is provided with through hole in tooth bar lock core place, and this outer dentation key stretches into this through hole and engages with this tooth bar lock core; This well seat inwall is provided with the cavity that holds this tooth bar lock core extension.

Further, this built-in lock mechanism also includes lock core pin, and this lock core pin radially inserts this gathering sill, limits the displacement of this tooth bar lock core.

Further, this built-in lock mechanism and this well lid are integrated.

Compared with prior art, the utlity model has following advantage: below well lid, be fixedly connected with built-in lock mechanism, can directly form snap close with well seat, needing to be equipped with special key could open; Can accomplish to prevent well lid loss, security performance is good, and built-in lock mechanism is difficult for upper rust, and overall appearance feature elegant in appearance.

Brief description of the drawings

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

Wherein: 1 well seat; 2 gathering sills; 3 lock core pins; 4 well seat lock core holes; 5 tooth bar lock cores; 6 outer dentation keys; 7 keyholes; 8 well lid lock core holes; 9 lock core springs; 10 well lids.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in detail, the description of this part is only exemplary and explanatory, should not have any restriction to protection domain of the present utility model.

The embedded pattern manhole cover lock of one as shown in Figure 1, comprise well seat 1 and well lid 10, these well lid 10 belows are fixed with built-in lock mechanism, this built-in lock mechanism is made up of outer dentation key 6, gathering sill 2, tooth bar lock core 5 and lock core spring 9, this tooth bar lock core 5 is located in this gathering sill 2 slidably, this lock core spring 9 is located between this tooth bar lock core 5 and the bottom land of this gathering sill 2, in figure in well lid lock core hole 8 positions; This well lid 10 is provided with through hole in these tooth bar lock core 5 places, i.e. keyhole 7 in figure, and this outer dentation key 6 stretches into this through hole and engages with this tooth bar lock core 5; This well seat 1 inwall is provided with the cavity that holds these tooth bar lock core 5 extensions.

In actual applications, the cavity on well seat 1 can be made as the well seat lock core hole 4 running through; Selectively this built-in lock mechanism and this well lid 10 are made as to integrative-structure in addition.

This built-in lock mechanism also includes lock core pin 3, and this lock core pin 3 radially inserts this gathering sill 2, limits the displacement of this tooth bar lock core 5; When well seat lock core hole 4 structure is especially set on well seat 1, this lock core pin 3 seems even more important.

Operating principle:

1, the lock core spring 9 of gathering sill 2 bottom lands, heads on tooth bar lock core 5.

2, tooth bar lock core 5 is ejection state, and part stretches in the cavity or well seat lock core hole 4 in well seat 1, between well lid 10 and well seat 1, is locking state.

3, well cover key 6 is inserted to well lid through hole and tooth bar lock core 5 and mate while engagement, rotate key 6, make tooth bar lock core 5 take in gathering sill 2.

4, by gathering sill 2 subtend well seat lock core holes 4, put down well lid 10, counter-rotation key 6.

5, make lock core spring 9 push tooth bar lock core 5, make tooth bar lock core 5 fill-in well seat lock core holes 4, well lid 10 locks have been finished.

6, inverse process can be opened this well lid 10.

Claims (3)

1. an embedded pattern manhole cover lock, it is characterized in that: comprise well seat and well lid, this well lid below is fixed with built-in lock mechanism, this built-in lock mechanism is made up of outer dentation key, gathering sill, tooth bar lock core and lock core spring, this tooth bar lock core is located in this gathering sill slidably, and this lock core spring is located between this tooth bar lock core and the bottom land of this gathering sill; This well lid is provided with through hole in tooth bar lock core place, and this outer dentation key stretches into this through hole and engages with this tooth bar lock core; This well seat inwall is provided with the cavity that holds this tooth bar lock core extension.

2. embedded pattern manhole cover lock as claimed in claim 1, is characterized in that: this built-in lock mechanism also includes lock core pin, this lock core pin radially inserts this gathering sill, limits the displacement of this tooth bar lock core.

3. embedded pattern manhole cover lock as claimed in claim 1, is characterized in that: this built-in lock mechanism and this well lid are integrated.