CN2438788Y - Safety door lock - Google Patents

Abstract

The utility model provides a safety-door lock. The inner side of a door is coated by a fixed plate which is provided with a shell. The shell is provided with one lock latch which travels through the fixed plate and is provided with a drive plate of a lock tongue. The back end of the drive plate of the lock tongue is provided with a spring. The front end of the drive plate of the lock tongue is provided with the lock tongue. A press element is pasted on the drive plate of the lock tongue. The surface of the shell is provided with a handle seat. The handle seat is provided with a door handle. One end of the door handle travels through the shell, and depends on the press element. A movable rod which is connected with the door handle is inserted at the other end. When the door handle of the safety-door lock presses a door surface, the press element pushes the drive plate of the lock tongue backwards, and the lock tongue is retracted in the shell. The utility model can open doors whatever sides the doors are arranged to. The door lock has longer service life, and the spring in the lock is not easy to be sprung out.

Description

Safety door latch

The utility model relates to a kind of safety door latch.

The general common safety door latch that is contained on the safety door, as shown in Figure 5: be a body of rod 8, these body of rod 8 two ends respectively are connected to a door knob 81,82, wherein rake 81 1 ends are contained on the handle base 84 with one 83, this handle base has a lock housing 9 that is fixed on the base plate 95 for 84 times, one main base 91 is housed in this lock housing 9, on this main base 91 leader's slurcam 92 is housed, there are both sides that the ellipse perforation 922 of upright plate body 921 is respectively arranged in this handle slurcam 92, so that door knob 81 passes in the end patchhole 922 of lock housing, and rely on two upright plate bodys 921 to be fixed on the main base 91, respectively there is a spring 923 that is sleeved on the main base 91 handle slurcam 92 both sides, on handle slurcam 91, there is a dead bolt to drive plate 93, this dead bolt drives on the plate 93 Spiale element 94, this Spiale element 94 passes on one side and is fixed on a base plate 95 of an interior side, then respectively there is a push rod 941 Spiale element 94 both sides, Spiale element 94 front ends lean against the dead bolt 95 on the main base 91, in addition, one end of door rake 82 relies on a rotating shaft 83 to be contained on the handle base 84, this handle base has a lock housing 9 that is locked on the base plate 95 for 84 times, one main base 91 is housed in this lock housing 9, on this main base 91 leader's slurcam 92 is arranged, there are both sides respectively to be provided with the ellipse perforation 922 of upright plate body 921 in this handle slurcam 92, an end that is used for cooperating door knob 81 to pass lock housing inserts perforation 922, and borrow two upright plate bodys 921 to be fixed on the main base 91, one spring 923 that is enclosed within on the main base 91 is respectively arranged in handle slurcam 92 both sides, this device not only part is many, make trouble, and assemble time-consuming, in addition, drive to not simultaneously door knob 81 as door, 82 can't change direction thereupon; Because 923 on spring is contained in the lock housing 9, be not fixed, therefore, spring 923 escapes take place or block in regular meeting, and side door is pressing or restore to the original state, and is very undesirable in the use.

Main purpose of the present utility model is to provide a kind of safety door latch, the user will use the door knob of this safety door latch when the shop front presses, press element drives plate with dead bolt and passes to the back-end, makes in the dead bolt withdrawal housing, and no matter which limit door is opened in can both be opened door; The life-span of door lock is longer, and each spring in the lock is difficult for bullet and takes off.

The purpose of this utility model is achieved by the following scheme: a kind of safety door latch, and it comprises that fixed head, housing, handle base, press element, dead bolt drive plate and lock bolt etc.; Wherein, at the installed inside fixed head of door, with the housing of bolt, at surface of shell handle base is housed on this fixed head, on this handle base door knob is housed, be inserted with trace in this door knob another side, this trace other end is inserted in the door knob of an interior opposite side; One end of this door knob is contained in the handle base, under this handle base housing is arranged, this housing has opening in handle base, going deep into being contained in the housing by opening part on the handle base front end convex body is door knob, press element is contained in housing one side, has dead bolt to drive plate under this press element, and this dead bolt drives the dead bolt that front edge of board has the shroud notch of passing, dead bolt drives lock bolt that plate installs down and is enclosed within the hole on the fixed head, and pressing plate is contained in the lock bolt dead bolt that reclines and drives the another side of plate; The avris of door knob in handle base respectively has recessed frame, in these recessed frames spring is housed respectively, and the perforation that rotating shaft is passed through the axis hole of handle base is arranged in each limit of door knob; The both sides of press element respectively are equipped with and are stretched out and push pedal that direction is opposite, are embedded with upright cylinder in the push pedal, and this cylinder is pressed against on the door knob convex body; Respectively there is flange the rear end that dead bolt drives the plate two sides, and press element and lock bolt can be resisted against respectively on the flange, and dead bolt drives the plate rear end and is provided with a plurality of grooves, and spring all is housed in these grooves.

The utility model is by providing the modification scheme of above-mentioned safety door latch, make with door knob when the shop front presses, by press element dead bolt is driven plate and passes to the back-end, dead bolt is got back in the lock housing, door is opened; Implement this scheme, at first, saved manufacturing cost, make easy to assembly; Secondly, no matter which limit door is opened in, and door knob all can make press element drive dead bolt and drive plate until door is opened; Once more, by the effect of door knob upper spring, do not need to drive by dead bolt the drive of plate, trace can be back to the origin-location, has reduced dead bolt and has driven plate rear end spring generation elastic fatigue; In addition, because dead bolt drives the plate rear end a plurality of grooves are arranged, spring one end that dead bolt drives on the plate can be fixed in the groove, and dead bolt drives plate when mobile, and difficult being hit by a bullet from groove of each spring takes off.

Below in conjunction with accompanying drawing and each specific embodiments the utility model is described in further detail:

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is a side sectional view of the present utility model.

Fig. 3 is a partial sectional view of the present utility model.

Fig. 4 is an embodiment schematic diagram of the present utility model.

Fig. 5 is the decomposing schematic representation of existing door lock.

As Fig. 1, shown in Figure 4, the utility model mainly includes fixed head 1, and housing 2, handle base 3, press element 4, dead bolt drive plate 5 and lock bolt 6 etc.; Wherein, a side is equipped with a fixed head 1 in door, use bolt one housing 2 on this fixed head 1, a rake hand seat 3 is equipped with on the surface of this housing, this handle base 3 is equipped with a door knob 31, be inserted with a trace 32 in these door knob 31 another sides, these trace 32 other ends then are plugged in the door knob 33 of an interior opposite side, this door knob 33 is contained in leader's seat 3 on one side, this rake hand seat has a housing 2 for 3 times, this housing 2 has an opening 21 in handle base 3, door knob 33 can be contained in handle base 3 front end convex bodys 34 is stretched in the housing 2 by opening 21,2 of housings are equipped with a press element 4, this press element has for 4 times a dead bolt to drive plate 5, and this dead bolt drives plate 5 front ends and has the dead bolt 51 that passes housing 2 recesses 22, drives the plate 5 next lock bolts 6 that are equipped with at dead bolt, this lock bolt 6 is enclosed within the hole 11 on the fixed head 1 on one side, at lock bolt 6 another side that dead bolt drives plate 5 that reclines pressing plate 61 is arranged then.

Its door knob 31,33 is contained on the flank side surface in the handle base 3 respectively a recessed frame 35, in this recessed frame 35 spring 36 is arranged respectively, door knob 31,33 then respectively has a perforation 37 in this limit, make rotating shaft 38 pass perforation 37 through the axis hole 39 of handle base 3, with door knob 31,33 multi packs on handle base 3.

In its press element 4 both sides respectively have stretch out and opposing push pedal 41. these two push pedals 41 in be embedded with a upright cylinder 42, this cylinder 42 is pressed against on door knob 33 convex bodys 34.

Its dead bolt drives 5 liang of surface rear ends of plate respectively a flange 52, and press element 4 and lock bolt 6 are resisted against respectively on the flange 52, and dead bolt drives plate 5 rear ends has a plurality of grooves 53, each shock mount 54 in this groove 53.

Shown in Fig. 2,3,4: elder generation is with holding on trace 32 during use, and trace 32 passed downwards, make door knob 31,33 be connected an end and all on the shop front, press, the convex body 34 of door knob 33 can upwards be passed the cylinder 42 that presses the press element 42 on it with trace 32.The push pedal 41 of press element 4 one sides is resisted against on the flange 51 of dead bolt drive plate 5, dead bolt is driven plate 5 extruding, make dead bolt drive plate 5 rear ends and press, and then the dead bolt 51 that makes dead bolt drive plate 5 front ends can be opened door by in the recess 22 retraction housings to the inwall of housing 2; Otherwise, hand leaves trace 32, door knob 31,33 can utilize the spring 36 of its side to reset, and dead bolt drive plate 5 also can stretch in the dead bolt hole dead bolt 51 by the elastic reaction of rear end spring 54, in addition, also key can be inserted in the lock bolt 6, make lock bolt 6 pressing plates 61 either sides be pressed against dead bolt and drive on plate 5 flanges 52, make dead bolt drive plate 5 dead bolt 51 is moved in the housing 2, door is opened.

Claims (4)

1. safety door latch, it comprises that fixed head, housing, handle base, press element, dead bolt drive plate and lock bolt etc.; It is characterized in that: door installed inside fixed head, the housing of useful bolt on this fixed head, this surface of shell is equipped with handle base, and this handle base is equipped with door knob, is inserted with trace in this door knob another side, and this trace other end is inserted in the door knob of an interior opposite side; This door knob is contained in the handle base on one side, under this handle base housing is arranged, this housing is provided with opening in handle base, going deep into being contained in the housing by opening part on the handle base front end convex body is a door knob, press element is contained in case side, has dead bolt to drive plate under this press element, and this dead bolt drives the dead bolt that front edge of board has the shroud notch of passing, dead bolt drives lock bolt that plate installs down and is enclosed within the hole on the fixed head, and pressing plate is contained in the lock bolt dead bolt that reclines and drives the another side of plate.

2. safety door latch as claimed in claim 1 is characterized in that: the avris of door knob in handle base respectively has recessed frame, in these recessed frames spring is housed respectively, and the perforation that rotating shaft is passed through the axis hole of handle base is arranged in each limit of door knob.

3. safety door latch as claimed in claim 1 is characterized in that: the both sides of press element respectively are equipped with and are stretched out and push pedal that direction is opposite, are embedded with upright cylinder in the push pedal, and this cylinder is pressed against on the door knob convex body.

4. safety door latch as claimed in claim 1 is characterized in that: the rear end that dead bolt drives the plate two sides respectively is provided with flange, and press element and lock bolt can be resisted against respectively on the flange, and dead bolt drives the plate rear end and is provided with a plurality of grooves, and spring all is housed in these grooves.

Images