CN2144688Y - Anti-prying spring lock for door - Google Patents

Abstract

The utility model discloses an improved anti-prying cylinder lock for a door. The utility model has the essential technical proposal that a small lock tongue and a mechanism which is linked with the small lock tongue are added; the mechanism is composed of a bottom board, an L-shaped rod, a lateral board, a spring, screws, pins, etc.; accordingly, the cylinder lock for a door is safe. The utility model has the advantages of convenient operation, novel design, simple structure and low cost.

Description

Anti-prying spring lock for door

The utility model is applicable on the various building doors and uses.

At present the pin tumbler lock that uses of people has only a dead bolt, uses dangerously, is pried open easily, the pin tumbler lock that had occurred two dead bolts in recent years, this lock can only be used for owner to be used in the room time, though more safe than originally, but use inconvenience, security reliability is not good enough.

It is a kind of safe and reliable, easy to use that the utility model provides, the pick-proof pin tumbler lock that owner can both operate in the room or outside the room.

The utility model is achieved like this is promptly made a call to two holes in order to fixed base plate at former pin tumbler lock, can be fixed on the base plate once the cover link gear; Near dead bolt, open a hole, in order to settle little dead bolt; Little dead bolt is connected with transverse slat with pin, end cover upper spring, and spring withstands on the supporting plate; Transverse slat, and can rotate on base plate by screw, and L type bar is screwed on base plate, also can rotate, and a projection is arranged on the L type bar, spring of outside cover, and spring one end withstands on the boss limit in the middle of the lock body.L type bar is stuck in the tappet of base plate and transverse slat.The one end control dead bolt of L type bar, the other end is controlled by the flange of goat's horn plate; And the goat's horn plate on bonnet also increases a flange, in order to the vertical rod of control L type bar one end.

When locking a door, little dead bolt is pressed into, and the spring of lower end is compressed, and transverse slat is fulcrum with the screw, right-hand member is moving downwards, it is upwards moving that left end drives L type bar, and the tappet on the transverse slat is removed the constraint to L type bar, and then spring makes L type bar moving outward, be that L type bar is that fulcrum rotates with the screw, dead bolt is withstood in the upper end, and at this moment the someone wants to utilize the insertion of book sheet to pry open dead bolt, and it is just impossible to open lock.And owner oneself rotates bonnet goat's horn plate as long as a key inserts lock core and rotates by dialling bar, and then flange will be vertical rod toward extrapolation, and the pressure that L type bar will overcome spring just can be withdrawn the moving outward dead bolt in upper end of L type bar, and lock just can be opened.In like manner, if owner is in the room, as long as turning knob can be opened lock in the same old way.

The utility model design is unique, and easy to use, safe and reliable, easy to manufacture, cost is low.

Description of drawings:

Fig. 1 is the configuration diagram of the utility model inside.

Fig. 2 is the structure chart of the utility model bonnet.

Fig. 3 inserts lock core for key and dials the relational view of bar.

Fig. 4 is the utility model end face diagrammatic sketch.

Fig. 5 is the stereogram of L type bar.

Below in conjunction with accompanying drawing the utility model is further described:

As shown in Figure 1, dead bolt (2) is contained in the lock body (1), the end has two push rods (28) of end plate (13) to pass the hole of plate washer (31), the outside is with spring (27) and dead bolt (2) links, base plate (4) is fixed by bolts to lock body (1) inner chamber, the top of base plate (4) fixed a transverse slat (6) by screw (10), one end of transverse slat (6) is by screw (18) fixed L type bar (5), tappet (19) is arranged on the transverse slat (6), in order to constraint L type bar (5), the other end of transverse slat (6) connects little dead bolt (3) by pin (9), one end of little dead bolt (3) passes the hole of the correspondence of lock body (1), other end outer casing spring (17) is through in the hole of plate washer (31).As shown in Figure 2, bonnet (21) matches with lock body (1), and its middle part is equipped with rotary goat's horn plate (22).Slotted hole (24) and flange (23) are arranged on the goat's horn plate (22), and group bar (25) that is installed on the cylinder of spring lock (29) can insert in the slotted hole (24).As shown in Figure 4, the turn-knob (26) of lock body (1) outside passes the hole and the connection of the goat's horn plate (30) in the lock body (1) of lock body (1).As Fig. 5, shown in Figure 1, there is a projection (12) side, middle part of L type bar (5), projection (a 12) outside cover spring (11), and an end of spring withstands in the lock body (1), on the boss (32).L type bar (5) bottom curves the L type, and its afterbody has a vertical rod (16), the two ends of vertical rod (16) respectively with lock body (1) in goat's horn plate (30) on flange (15) and the flange (23) of the goat's horn plate (22) on the bonnet (21) contact.As shown in Figure 4, the knob (26) of lock body (1) outside passes the hole and the connection of the goat's horn plate (30) in the lock body (1) of lock body (1).When locking a door, dead bolt (2) inserts in the snap close, and little dead bolt (3) is flattened by doorframe, and promptly little dead bolt (3) overcomes the pressure of spring (17) to motion, and to drive transverse slats (6) by lock (9) be the fulcrum rotation with screw (10).Make tappet (19) on the transverse slat (6) remove constraint to L type bar (5), the bottom of L type bar (5) is to left movement under the effect of spring (11), the upper end is right moving, make termination (33) withstand dead bolt (2), at this moment have human book sheet to insert crack between a door and its frame and can't stir dead bolt (2) yet, door is not just opened yet.The owner of lock inserts lock core (29) with key and rotates, and is inserted in the slotted hole (24) because of dialling bar (25), then dials the flange (23) that the rotation of bar (25) will bonnet goat's horn plate (22) and moves.Be related with flange (23) in vertical rod (16) upper end, flange (23) moves outward and outwards just promotes vertical rod (16), then L type bar (5) elastic force that overcomes spring (11) is that fulcrum rotates with screw (18), make the upper end of L type bar (5) outwards moving, thereby make the constraint of termination (33) releasing to dead bolt (2), the elastic force that two goat's horns promotion end plates (13) on the while bonnet goat's horn plate (22) make two push rods (28) overcome spring (27) moves downwards, thereby make dead bolt (2) withdrawal, door just can have been opened.If owner is in the room, then as long as turning knob (26) rotates the goat's horn plate (30) that is fixed on the turn-knob (26), it is moving that the bottom of flange (15) promotion vertical rod (16) is turned left it, L type bar (5) overcomes the elastic force that is enclosed within projection (12) spring (11), and to be with screw (18) that fulcrum rotates the upper end of L type bar (5) outwards moving, remove the constraint of termination (33) to dead bolt (2), while is by the rotation of goat's horn plate (30), the elastic force that two goat's horns (14) promotion end plates (13) make two push rods (28) overcome spring (27) moves downwards, make dead bolt (2) withdrawal, door lock just can be opened.

Claims (1)

1. A kind of pick-proof pin tumbler lock, comprising:

   A. lock body (1) and

   B. the lock (2) that can in lock body (1) corresponding aperture, stretch,

   C. there is end plate (13) end, passes the hole of plate washer (31), and the outside is with spring (27), and joining two push rods of dead bolt (2) (28).

   D. the turn-knob (26) of lock body (1) outside passes in the hole of lock body (1) and the lock body (1) has the goat's horn plate (30) of two goat's horns (14) to connect.

   E. bonnet (21) matches with lock body (1), and its middle part is equipped with rotary goat's horn plate (22),

   F., slotted hole (24) and flange (23) are arranged on the goat's horn plate (22), are installed in group bar (25) on the cylinder of spring lock (29), can insert in the slotted hole (24),

   It is characterized in that:

   A. lock body (1) inner chamber is fixed a base plate (4),

   B. the top of base plate (4) fixed a transverse slat (6) by screw (10),

   C. an end of transverse slat (6) passes through screw (18) fixed L type bar (5),

   D. on the transverse slat (6) tappet (19) is arranged, in order to constraint L type bar (5),

   E. the other end of transverse slat (6) connects little dead bolt (3) by pin (9),

   One end of f. little dead bolt (3) passes the corresponding hole of lock body (1) and can stretch, other end outside sleeve spring (17), and be through in the hole of plate washer (31),

   There is a projection (12) side, middle part of g.L type bar (5), and an outside cover spring (11), an end of spring withstand on the boss (32) in the lock body,

   H.L type bar (5) bottom curves the L type, and its afterbody has a vertical rod (16), the two ends of vertical rod (16) respectively with lock body (1) in sheep sheep plate (30) on flange (15) and the flange (23) of the goat's horn plate (22) on the bonnet (21) contact.

   Dead bolt (2) can be withstood in the termination, top (33) of i.L type bar (5).

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