CN2033426U - Pry-proof, warning and multi-function safety door lock - Google Patents

Abstract

The utility model relates to an improved latch-lock. The utility model is characterized in that a pry proof secure mechanism is arranged under the lock; a pry proof alarm unit is arranged in the lock; an electric system, which is provided with a music doorbell circuitry and can give an alarm, is arranged out of the lock and connected with the pry proof alarm unit. The lock-tongue of the lock can not be contacted with a sharp tool from any point of a door when standing out of the door, and the alarm can be sent out when the gap of the door is enlarged by only 0.1 mm. The utility model, which has the advantages of strong security function, simple structure, easy work, low cost, high interchange ability, multiple functions, easy and safe use, etc., is particularly suitable for the use of the existing urban and rural houses.

Description

Pickproof alarm multifunctional safe door lock

The present invention relates to a kind of improved pin tumbler lock, exactly, it is a kind of multifunctional safe door lock that has Pickproof alarm device and subsidiary doorbell.Be particularly suitable for the use of the existing private residence in town and country.

In order further to bring into play the protection function of lock, people have done all improvement to traditional pin tumbler lock (being commonly called as " Si Biling " lock).It is follow-on roughly following three classes: a class is two insurance or three safety locks.During use, must shut behind the door, key inserts lock core and does the counter-rotating action.Yet,, lose the safety effect of this lock easily because user's various reasons can not be carried out the insurance program as stated above.Another kind of is the coding lock.The shortcoming of this class lock is a complex structure, and cost height, key are lost difficult preparation, and old children and memory weak person inconvenience are used, and needs especially at night just can see number clearly by light.Also having a class is the door lock that infrared warning device is housed, this class lock expense costliness, and be difficult for differentiating kindhearted guest and undesirable person, be not suitable for the use of common private residence and department office.

Purpose of the present invention, be to overcome above-mentioned door lock deficiency, use from reality, a kind of improved pin tumbler lock is provided, a simply and effectively Pickproof alarm device promptly is set in the common spring door lock, and can in warning circuit, add a music doorbell circuit, thus make it to have following new function: when door lock is closed, need not as two insurances or three safety locks, carry out the insurance program; During unlatching, its program also needn't be complicated as the coding lock; The undesirable person attempts to prize when stealing, the pick-proof of this lock closes mechanism, it is had no way of doing it, if will enlarge the gap of crack between a door and its frame, doorframe or door are stressed, and its gap enlargement is only when 0.1mm is above, just can send ear-piercing chimes of doom, to disintegrate criminal's will, arouse people's attention, stop the continuation of crime; And when well-meaning guest arrived, the music door-bell that originally locks band was for its use.

The present invention realizes by following technological approaches: at first an additional L shaped metal is prevented skid plate under common spring door lock stopper, its concave surface coincide with doorframe, the long plane of structure of its convex surface had both covered the hole of stopper, just cover the closed slit of lock housing and stopper again, make it to form a pick-proof and close mechanism.Secondly, a micro-adjusting mechanism is set in stopper, to regulate regulating block with dead bolt contact or separation; Being provided with one in lock housing can be for the warning contact device of dead bolt left baffle contact; The warning contact device is connected with an outer double warning circuit of establishing music doorbell circuit of lock.Before using, allow lock be in closed condition earlier,, regulate regulating block and contact, promote dead bolt, make the left baffle that joins together with dead bolt form the gap with the warning contact block of warning contact device with dead bolt then by micro-adjusting mechanism.Lock according to the present invention's design, when it is installed in the last use of door, its pick-proof closes mechanism, make criminal outdoors adopt any sharp weapon to come in by crack between a door and its frame (the closure place of door and doorframe) sled, in a single day door and doorframe are subjected to the power of expansion to the left and right, and latch bolt spring promptly produces rightabout trying hard to recommend and moves the dead bolt bar, and left baffle is disappeared with the gap between the warning contact block of warning contact device, cause warning circuit work, alarm just sends tweeting sound.Can be with the music doorbell circuit that warning circuit links for generally using.

Below in conjunction with accompanying drawing the present invention is described in further detail.

Fig. 1 is door lock configured in one piece and the internal construction drawing in side sectional elevation according to the present invention's design.

With reference to Fig. 1, be installed in the stopper 6 on the doorframe 24 and be installed in the lock housing 13 of door on 22, and for lock core 17 and the switch knob 12 of opening usefulness, with be subjected to latch bolt spring 8 effect and, add that safety handle 9 has constituted one complete lock with the dead bolt 7 that left baffle 11 joins together.When key insertion lock core 17, behind the screw key certain angle, dead bolt 7 just indentation lock housings 13, door can be opened.Safety handle 9 is used for limiting the activity of dead bolt 7 in the room, switch knob 12 is used for from room inner control dead bolt flexible.Below promptly be the structure and the working condition of common spring door lock.According to design philosophy of the present invention, it following improvement and configuration have been done: be connected the anti-skid plate 23 of a metal by lug screw 5 at stopper 6 downsides, anti-skid plate is L-shaped, its concave surface coincide with doorframe 24 just, make it to protect tightly the inboard of doorframe 24, the long plane of structure of its convex surface is designed to cover the hole of stopper 6, but also should extend certain distance to lock housing 13 directions, so that when lock housing 13 is fastened on the door 22, prevent that skid plate 23 stretches out that part of can from outside cover the closed slit of lock housing 13 and stopper 6.And this design makes when lock is installed, the closed slit of lock housing 13 and stopper 6, be different from common pin tumbler lock and face crack between a door and its frame like that, but be offset to the doorframe direction, make it to avoid crack between a door and its frame, close mechanism from outdoors the unification point of appointing with the pick-proof that sharp weapon all can't touch dead bolt 7 so just formed one.

Welded a metal boss 26 in stopper 6, wear two threaded apertures outside stopper 6, by threaded apertures, be screwed into adjustment screw 2, the screw front end connects regulating block 4, is screwed into the spring adjustment screw 1 that is with regulating spring 3.In lock housing 13, collets 19 are fixed on it, warning contact chip 21 is fixed on the collets 19 with screw 20 with hold-down screw 18.So just, available screwdriver rotation adjustment screw 2 makes regulating block 4 stretch or contract, and controls it with dead bolt 7 contacts or separate.Because dead bolt 7 joins together with left baffle 11, and dead bolt bar 25 is snarled by latch bolt spring 8 self, spring 8 tightly heads on dead bolt 7 and baffle plate 10, so when finely tuning regulating blocks 4 with adjustment screw 2, make it with dead bolt 7 contacts, and promote dead bolt slightly and move right, just can make left baffle 11 form gaps with warning contact chip 21.This gap can reach appropriate position through the adjusting of adjustment screw 2 fully, thereby work as door 22 or doorframe 24 and be subjected to the power of expansion to the left and right, latch bolt spring 8 is compressed, produce one with the rightabout power of external force, promote left baffle 11 with 21 contacts of warning contact chip, introduce in the warning circuit through electrical socket 14, attaching plug 15 and lead 16.

Link to each other with lead 16, be located at outer being one and can making the double electric system that is provided with music doorbell circuit of alarm work of lock.Connect warning circuit when the warning contact device, the oscillation circuit on the circuit has just produced the stable signal of frequency of oscillation.Also connected a music doorbell circuit in the warning circuit, when doorbell switch contacts, music-integrating block work, and play out music.

When this door lock used, the warning contact gap need not remake other actions at ordinary times after disposable mixing up, and the open and close of door lock under normal circumstances all is same as common pin tumbler lock.Switch door and the vibrations that cause can not had an effect to warning device.The music door-bell of setting up is then brought into play the function of electric system, brings convenience to the user.

The present invention has following advantage:

(1) social benefit is obvious. The present invention can bring into play the protection function of door lock effectively, is conducive to protect the person and the property safety of resident family, maintains public order.

(2) economic benefit is good. This door latch structure is simple, and is with low cost, and technology is also uncomplicated, is conducive to implement and accepted by the user. And the present invention has very strong interchangeability, and the old-fashioned cylinder drawback lock to original user uses as long as the transposing part can play the serviceability that the present invention has, so just more is conducive to apply.

(3) easy to use, safe.Because its open method is same as traditional pin tumbler lock, thereby help particularly old man and child's use of user.The Warning door bell electric system can be designed to use dc source.Usually the 6V battery of once adorning usefulness is available 3～June.

Claims (3)

1, a kind of by stopper 6, lock housing 13, switch knob 12, safety handle 9 and be subjected to latch bolt spring 8 effect and, it is characterized in that with the door lock that the dead bolt 7 that left baffle 11 joins together is formed:

A, stopper 6 downsides have been installed the anti-skid plate 23 of a L shaped metal, and its concave surface is with side-to-side anastomosis in the doorframe 24, and the long plane of structure of its convex surface had both covered the hole of stopper 6 downsides, covered the closed slit of lock housing 13 and stopper 6 again just;

Be provided with a micro-adjusting mechanism in b, the stopper 6, regulate adjustable regulating block 4 with dead bolt 7 contacts or separation;

Being provided with one in c, the lock housing 13 can be for the warning contact device of dead bolt left baffle 11 contacts that join together with dead bolt;

D, be located at outer being and making the double electric system of establishing music doorbell circuit of warning work of linking to each other with the warning contact device of lock.

2, door lock as claimed in claim 1 it is characterized by described micro-adjusting mechanism by metal boss 26, adjustment screw 2 be with the spring adjustment screw 1 of regulating spring 3, and regulating block 4 is formed.

3, door lock as claimed in claim 1 is characterized by described warning contact device and is made up of with electrical socket 14, attaching plug 15, lead 16 on being connected it the warning contact chip 21 that is fixed on the collets 19.

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