CN2368930Y

CN2368930Y - Lock

Info

Publication number: CN2368930Y
Application number: CN 99203456
Authority: CN
Inventors: 严敏飞
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-08
Filing date: 1999-02-08
Publication date: 2000-03-15
Anticipated expiration: 2009-02-08

Abstract

The utility model relates to a spring lock which is especially suitable for being installed and used in letter/newspaper boxes, milk boxes and draws. A key is used for unlocking the lock to open a box, and the box can be locked without the key. The convenient lock can be locked automatically by hitting a lock bolt which can be pushed out by a spring. A lock core and a lock head are connected into a whole by a marble and the spring. A positioning arm is sheathed on the head of the lock core, and the end surface of the lock core is connected with a rotary arm which is fixed on a lock cover which is connected to the lock body provided with the lock bolt and the spring into a whole. The spring is a pressing bolt spring which is fixed in the lock body. Both ends of the spring are respectively appressed with the upper end surface of the lock bolt and one side surface of the lock body, and one end of the spring is bent by 90 DEG.

Description

Latch

The utility model relates to a kind of lock, is particularly suitable for installing and using on mailbox and milk box, drawer etc., opens lock with key when opening mailbox, need not key when closing case,, just can pin latch easy to use automatically as long as collide dead bolt.

Existing resident's block of flats, the mailbox that uses in the New Residential Quarters, opening and closing all of chest carried out with key open and close lock.Owner comes off duty or buys vegetables and go home, and letter, the newspaper in the mailbox fetched downstairs in passing, generally is a handbag, unpacks with key and take newspaper on the other hand.If the letter of holding, newspaper, article are few, also can take key to close case on the other hand and operate.If the thing of believing, report or carrying is more, a handbag, proficiency are taken thing, can't operate key more at all, have to look for the place to put down bag, article or letter newspaper and close case again, so use is very inconvenient.

The purpose of this utility model is to provide a kind of and opens lock with key, just can pin automatically and need not key during locking, and latch easy to use.

The utility model is achieved in that latch is linked into an integrated entity by pellet shot from a slingshot, spring by lock core, tapered end, the lock core head is with registration arm, connect spiral arm on the end face, be fixed on the locking closure, locking closure part with dead bolt is installed, the lock body of the spring institute that links into an integrated entity forms, and spring is a pressure tongue spring, be fixed in the lock body, the upper surface and lock body one side of dead bolt is close at two ends respectively.

Fig. 1. structural representation of the present utility model (partial sectional view).

Fig. 2. the left view of Fig. 1 (partial sectional view).

Below in conjunction with accompanying drawing embodiment of the present utility model is further described

Pressing tongue spring (2) is coil spring, and an end is bent into 90 °.

Locking closure (4) wherein has the centre at three edges that one breach is respectively arranged for both sides and the middle sheet that through hole is arranged respectively, and two spacers that protrude are arranged on the inner surface.

Registration arm (8) is the middle Pear-Shaped that through hole is arranged, and the inner surface head has a protruding catch.

Lock body (1) has the box-like of through hole and gathering sill (11) for the bottom, and there is a rectangular indentation top of box, respectively has in the middle of three edges projection that protrudes to cooperate with breach on the locking closure (4).Dead bolt (12) upper end is

Shape has an inclined-plane, and the lower end is monolateral

Shape, end have a pulling block (9).

Lock core (6), tapered end (5) link into an integrated entity by the pellet shot from a slingshot in the pellet shot from a slingshot hole on it (14), spring (13), are screwed on locking closure (4).

Registration arm (8) is enclosed within the head of lock core (6), and can rotate in 90 ° of scopes, and spiral arm (10) is fixed on the end face of lock core (6) head with rivet (7).

The breach on lock body (1) box limit is passed in dead bolt (12) upper end, and the gathering sill (11) on lock body (1) bottom surface is passed in the lower end, presses the two ends of tongue spring (2) to be close to the upper surface of dead bolt (12) and a side of lock body (1) respectively.Cover the locking closure part that has lock core (6), tapered end (5) etc., and with two screws (3) locking closure (4) and lock body (1) are connected into one, wherein a screw (3) will pass the through hole of pressing tongue spring (2), and latch assembles.

This latch can be installed in local use such as mailbox, milk box, drawer.

Open mailbox, available key inserts keyhole, key drives lock core (6) and rotates, spiral arm (10) thereon rotates simultaneously, when spiral arm (10) is run into the shifting block (9) of dead bolt (12) lower end, just spur dead bolt (12) and move down, dead bolt (12) is withdrawn in the lock body (1), open lock, make lock be in opening.After thing in the mailbox has been taken, shut the door, make dead bolt (12) collision compression press tongue spring (2), under the effect of spring force that dead bolt (12) is extrapolated, thus make dead bolt (12) enter lockhole with mailbox automatic locking jail.At this moment spiral arm (10) does not contact with dead bolt (12) under the stopping of registration arm (8).

The utility model is compared with prior art: because this latch is to be equipped with to press the tongue spring under the end face of dead bolt, As long as dead bolt is collided, under the effect of pressing the tongue spring, just can automatically dead bolt be released and pin, use Or else the family has needed with the key lock mailbox, therefore easy to use, deeply favored by the user.

Claims

1. latch, link into an integrated entity by pellet shot from a slingshot (14), spring (13) by lock core (6), tapered end (5), lock core (6) head is with registration arm (8), connect spiral arm (10) on the end face, be fixed on the locking closure (4), locking closure part with dead bolt (12) is installed, the lock body of spring (1) link into an integrated entity form, it is characterized in that spring is to press tongue spring (2), be fixed in the lock body (1) that the upper surface and lock body (1) one side of dead bolt (12) is close at two ends respectively.

2. latch according to claim 1 is characterized in that the upper surface of dead bolt (12) is

Shape, lower end are monolateral Shape, end have a shifting block (9).

3. latch according to claim 1, it is characterized in that pressing tongue spring (2) is coil spring, and an end is bent into 90 °, and two screws (3) link into an integrated entity locking closure (4) and lock body (1), and wherein a screw (3) passes the through hole of pressing in the tongue spring (2).