CN2199279Y - Internal latch-type door lock with double heads - Google Patents

Abstract

The utility model discloses an internal latch-type door lock with double lock heads, which is mainly characterized in that the bottom of the same shaft line on a big lock casing on the lower part of a lock latch is correspondingly provided with two lock heads, and a cam group, a drive plate, a plate spring, a spring, etc. are arranged between the two lock heads; the big lock casing is provided with a limiting device; because the utility model is provided with the inner and the outer lock heads, a lock body and the lock latch are both arranged inside the door, and the utility model is provided with the cam group matched with the lock latch, people can use the door lock indoors and outdoors, and the lock latch can automatically move forwards and backwards by rotating a key. The utility model has the advantages that the door can be locked both indoors and outdoors, the operation is convenient when the door is locked, the internal latch-type door lock with double lock heads has the characteristics of a built-in lock, the anti-theft effect is good, etc.

Description

Internal latch-type door lock with double heads

The utility model belongs to the lock technology field, is bolt door lock in a kind of twin-lock head.

Existing outer bolt door lock, lock body and locking bolt are all outdoors, and when the people went out, people can find out unmanned within doors, and anti-theft effect is poor; And this kind door lock has only an outer tapered end, and the people can't use door lock in doors, needs equipped in addition putting to lock a door; When using this kind door lock to lock a door, need with in a hand push keeper and the little lock housing, just rotatable key is locked a door.Therefore it is poor to exist anti-theft effect, does not possess the built-in lock characteristics, the deficiency of troublesome poeration when locking a door.

The purpose of this utility model is that a kind of lock body of design and locking bolt are contained in the door, all can lock a door outdoors in door, and is easy to operate when locking a door, and possesses the door lock of built-in lock characteristics.

The main technical schemes that the utility model is taked is improved existing outer bolt door lock, remove original tapered end and inner driver thereof, two relative tapered ends in same axis bottom are set on the big lock housing of locking bolt bottom, between two tapered ends, be provided with two the cover respectively with the corresponding cam set of each tapered end, between two cam set, dial is set, between cam set and the dial spring is set, the both ends of the surface of dial respectively are provided with and mentioning that cam set matches.And the arc groove of elongate slots and spacing usefulness is set axially on locking bolt, the elongate slots that dial both upper ends thereof face is installed on the locking bolt is interior rotatable, and leaf spring is set, one section winding of leaf spring is contained on the outer wall with dial, another section card is contained in the elongate slots on the locking bolt, and the end is contained in an end face of locking bolt.And the corresponding stopping means of arc groove on setting and locking bolt on the lock body, thereby constitute bolt door lock in a kind of twin-lock head.

Bolt door lock provides a kind of desirable door lock for the lock technology field in this twin-lock head of the utility model.Because the lock body and the locking bolt of this kind lock are installed in the door, when the people went out, whether people can't judge had the people, possess the built-in lock characteristics, good anti-theft effect within doors; And this kind lock is owing to be provided with inside and outside two tapered ends, and people can also can use this lock to lock a door in door outdoors; Owing to be provided with the cam set that matches with locking bolt, dial, leaf spring etc., when therefore locking a door without the hand push locking bolt, as long as the key locking bolt can advance automatically.Compare with existing outer bolt door lock, have all using door lock in the door outdoors, easy to operate when locking a door, possess the built-in lock characteristics, remarkable advantages such as good anti-theft effect.

Reach the architectural feature that example further specifies bolt door lock in the utility model twin-lock head in conjunction with the accompanying drawings.

Fig. 1 represents the front view of bolt door lock lock body in the utility model twin-lock head.

Fig. 2 represents the lateral view of bolt door lock lock body in the utility model twin-lock head.

Referring to Fig. 1, Fig. 2, bolt door lock comprises in the utility model twin-lock head: tapered end 1,14, big lock housing 2, insurance card 17 and quiet cam 3,12 in the locking bolt 16, little lock housing (not shown), moving cam 4,11, dial 5, spring 6,9, transmission bar 7,10, leaf spring 8, base plate 13, mention 15, steel ball 18, stage clip 19.Locking bolt 16 is contained in the guide pipe on the big lock housing 2, has axial elongate slots on the locking bolt.Tapered end 1 is contained on the big lock housing 2 of locking bolt bottom, quiet cam 3 is contained on the big lock housing 2 of tapered end 1 bottom, moving cam 4 one ends and quiet cam 3 end faces snap-fit mutually become one group of cam set, have breach on the other end of moving cam 4, transmission bar 7 one ends are contained on the central bore of moving cam 4, and the lock core in the other end and the tapered end 1 links to each other; Tapered end 14 is contained on the base plate 13 that is fixed on the big lock housing 2, with tapered end 1 same axis, quiet cam 12 is contained on the base plate 13 of tapered end 14 bottoms, moving cam 11 1 ends and quiet cam 12 end faces snap-fit mutually become second group of cam set, the other end of moving cam 11 has breach, transmission bar 10 1 ends are contained on the central bore of moving cam 11, and the lock core in the other end and the tapered end 14 links to each other.The elongate slots that dial 5 is installed on the locking bolt 16 is interior rotatable, and its both ends of the surface respectively are provided with spring base, mention that 15 are contained on the dial 5.One end of spring 6,19 is contained in respectively on the spring base of dial 5 both ends of the surface, and the other end links to each other with moving cam 4,11 respectively.8 one sections windings of leaf spring are contained on the outer wall of dial 5, and another section card of leaf spring 8 is contained in the above-mentioned elongate slots on the locking bolt 16, and its end is contained in an end face of locking bolt 16.Big lock housing 2 is provided with slotted hole, and the stopping means of being made up of steel ball 18, stage clip 19 is contained in the aperture and hole on the big lock housing 2, and locking bolt 16 is provided with the corresponding with it card that is used for and puts the arc groove of steel ball 18.Interior insurance card 17 is contained on the big lock housing 2 on locking bolt 16 tops, and locking bolt 16 is provided with and interior insurance card 17 corresponding grooves.

During use lock body 2 is contained in the Yishanmen inboard, the keyhole of tapered end 14 exposes outdoors, and little lock housing (not shown) is contained in other Yishanmen (or doorframe) inboard.As locking a door outdoors, key is inserted in the keyhole of tapered end 14 and rotate, lock core in the tapered end 14 drives cam 11 by transmission bar 10 and rotates along quiet cam 12 end faces, moving, under the mating reaction of quiet cam face projection, moving cam 11 compression springs 9 advance, mention 15 interlocks on the breach of moving cam 11 other ends and the dial 5, stirring dial 5 rotates, be contained in leaf spring 8 zip bolts on the dial 5 when advancing to locking bolt 16 and stretching into length spacing in the little lock housing, arc groove on the locking bolt 16 is aimed at the stopping means on the big lock housing 2, steel ball 18 ejects under the effect of stage clip 19, be stuck in the arc groove on the locking bolt 16, transfer to key, moving cam 11 the effect lower surface of spring 9 breach automatically with dial 5 on mention 15 disengagings.The counter-rotating key can be opened door lock.The same tapered end 1 that uses can use door lock in door.

Claims (1)

1, bolt door lock in a kind of twin-lock head, has tapered end, interior insurance card, locking bolt, big lock housing, base plate, little lock housing, it is characterized in that tapered end is two, two the same axis of tapered end bottoms are contained in respectively on the big lock housing and base plate of locking bolt bottom relatively, locking bolt is provided with axial elongate slots and arc groove, corresponding respectively two tapered ends of two cover cam set bottom is contained on big lock housing and the base plate, dial is contained between two cam set, be equipped with on it and mentioning that two cam set match, between dial both ends of the surface and the cam set spring be housed, dial both upper ends thereof face is installed in the elongate slots on the locking bolt, one section winding of leaf spring is contained on the outer wall of dial, another section card is contained in the elongate slots on the locking bolt, and the end is contained in an end face of locking bolt, and stopping means is contained in the hole on the big lock housing.

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