CN213391622U - Oblique bolt contact-closing anti-theft door lock - Google Patents

Abstract

The utility model discloses a latch bolt touches and closes security door lock has solved the current comparatively complicated problem of this type of security door lock structure. The structure comprises a lock body, an oblique tongue component, an oblique tongue shifting piece, a driving mechanism, a movable plate and a lock cylinder unlocking mechanism, wherein a pushing piece is fixedly arranged on a rod body of the oblique tongue component. A locking plate and a trigger piece are arranged in the lock body, the middle position of the locking plate is rotationally arranged on the movable plate, a bayonet at one end of the locking plate is used for being clamped with a clamping structure on a supporting plate of the main lock body, the trigger piece is L-shaped, the corner part of the trigger piece is movably arranged at the other end side of the locking plate, and a raised head used for hooking a push piece in the latch bolt assembly is arranged on the vertical part of the trigger piece, so that the push piece enables the bayonet to be separated from the clamping structure through the trigger piece in the process that the latch bolt block extends out of the outer side of the panel; when the oblique tongue block retracts into the lock body, the push sheet sweeps over the raised head; the shifting column on the latch shifting piece is used for acting on the transverse part of the trigger piece so as to lead the convex head to leave the motion position of the push piece.

Description

Oblique bolt contact-closing anti-theft door lock

Technical Field

The utility model relates to a security door lock especially relates to an accessible oblique tongue touching pressurized and realizes automatically that the main lock bolt stretches out the lock panel outside and carries out the security door lock that locks to the burglary-resisting door.

Background

The anti-theft door lock is arranged on the anti-theft door and used for locking the anti-theft door when the door is closed. Conventional security door locks have a bolt and a latch bolt assembly that are inserted into a door frame opening to lock the security door to the door frame. If the outside door handle is fixed to the security door, the security door cannot be opened by the handle on the outside of the door. In practical application, a resident with relatively poor safety awareness sometimes goes out with a handle of the door, and the locking of the security door is realized only by utilizing the latch bolt assembly. Under most existing conditions, a latch bolt block in a latch bolt assembly in the anti-theft door lock is relatively smooth to enter and exit from a lock body, and in order to facilitate door closing, an inclined plane on the latch bolt block faces the outer side of a door. Therefore, in the case of using only the latch bolt block to lock the security door, the elastic sheet can be used to insert between the door and the door frame at the position of the latch bolt block on the outside, and the latch bolt block can be easily pushed into the lock body to open the door, so that the security of locking the security door is relatively poor.

The Chinese invention patent (publication number: 106088843B) provides a latch bolt block touch device of an automatic lock, and belongs to the technical field of hardware door lock accessories. It has solved the current automatic lock inconvenient scheduling problem of locking. The invention comprises an oblique tongue piece rod, an oblique tongue piece, a shifting piece, a limiting block, a leaning mechanism and an oblique tongue piece resetting mechanism, wherein the limiting block is rotationally connected with a lock box through a fixed shaft, the limiting block swings around the fixed shaft to enable a limiting part on the limiting block to be switched between a locking position and an unlocking position, the shifting piece is positioned on the side part of the oblique tongue piece rod, the inner end of the shifting piece is rotationally connected with the limiting block, the outer end of the shifting piece faces the oblique tongue piece, a hook pull opening is formed in the shifting piece, a clamping hook corresponding to the hook pull opening is arranged on one side, facing the shifting piece, of the oblique tongue piece rod, when the oblique tongue piece retracts, the clamping hook can fall into the hook pull opening along with the motion of the oblique tongue piece rod to form hook buckle connection, and the outer end of the shifting. After the oblique bolt block is locked, the bolt plate can be automatically ejected out to complete the locking of the main lock bolt, so that the trouble that the oblique bolt block can be locked by a key is avoided.

Although the main lock bolt can be quickly extended out of the lock body by touching the latch bolt block, the trigger mechanism for extending the main lock bolt out of the panel is relatively complex, inconvenient to assemble and high in preparation cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who needs the solution: the mechanism structure that the trigger main lock bolt in the anti-theft door lock extends out of the outer side of the lock body is relatively simple, and manufacturing cost is saved.

For solving the technical problem, the technical scheme of the utility model: a latch bolt closing anti-theft door lock, comprising:

the lock body is box-shaped and is provided with a panel;

the latch bolt component is movably arranged in the lock body and comprises a rod body and a latch bolt block connected to one end of the rod body, the latch bolt block is positioned at the position of the panel, and the other end side of the rod body is axially and fixedly provided with a push piece;

the latch bolt shifting piece is provided with a shifting head and a connecting head, the shifting head is used for shifting the latch bolt assembly, and the connecting head is provided with a shifting column;

the main lock bolt is fixedly connected with the end part of the supporting plate, a sliding column is vertically fixed on the supporting plate, and a clamping structure is formed on the supporting plate;

the driving mechanism elastically acts on the supporting plate to ensure that the main lock bolt keeps the trend of extending out of the lock body;

the movable plate is movably arranged in the lock body and is provided with a sliding chute for the gap insertion of the sliding column, the inner end of the sliding chute is provided with an inclined opening, the inclined opening is obliquely arranged relative to the sliding chute, and the sliding column is positioned at the position of the inclined opening after the main lock bolt retracts into the lock body in place;

the lock core unlocking mechanism comprises a lock core shifting piece which is rotationally arranged in the lock body through a pivot, one end of the lock core shifting piece is used for the lock core shifting block to act, and the other end of the lock core shifting piece is in transmission connection with a connecting head on the latch bolt shifting piece through a connecting rod;

the trigger mechanism comprises a locking plate and a trigger piece, the middle position of the locking plate is rotatably arranged on the movable plate, and a bayonet at one end of the locking plate is used for being clamped with a clamping structure on the supporting plate to realize the locking of the movable plate; the trigger piece is L-shaped, the corner part of the trigger piece is movably arranged at the other end side of the locking plate, and the vertical part of the trigger piece is provided with a raised head for hooking the push piece in the latch bolt assembly, so that the push piece enables the bayonet to be separated from the clamping structure through the trigger piece in the process that the latch bolt block extends out of the outer side of the panel; when the oblique tongue block retracts into the lock body, the push sheet sweeps over the raised head; the shifting column on the latch shifting piece is used for acting on the transverse part of the trigger piece so as to lead the convex head to leave the motion position of the push piece.

When the anti-theft door lock is closed, the door frame pushes and presses the inclined tongue block, and the inclined tongue block retracts into the lock body. In the process that the latch bolt block extends out of the lock body, the push sheet drives the locking plate to deflect through the raised head, so that the locking plate is separated from the clamping structure on the supporting plate, the movable plate can move, the limitation on the sliding column is removed, and the main lock bolt can rapidly extend out of the lock body.

Furthermore, the driving mechanism comprises a curved driving sheet, the middle position of the driving sheet is rotationally arranged in the lock body, one end of the driving sheet is provided with a driving column, and the driving column is movably inserted into a driving groove arranged on the supporting plate; two ends of the tension spring are respectively connected with the other end of the driving piece and the lock body. The driving mechanism is simple and compact in structure and convenient to arrange.

Furthermore, a damper is arranged in the lock body and connected to the driving plate, and the damper and the tension spring are respectively arranged on two opposite sides of the driving plate. The damper can effectively slow down the action speed of the main lock bolt and reduce the noise generated when the main lock bolt acts.

Furthermore, the lock cylinder shifting block is provided with a C-shaped opening, a convex angle is formed on the lock cylinder shifting block, and the lock cylinder shifting block is used for being contacted with the end part of the C-shaped opening so that the convex angle pushes the driving column. Through setting up the lock core plectrum, can adapt to the promotion of lock core shifting block well, be convenient for utilize the key to open the lock.

Further, the connecting rod is curved and protrudes toward a side plate of the lock body opposite to the panel. This facilitates the positioning of the connecting rod within the lock body.

Further, the end of the connecting rod connected with the latch pull sheet is provided with a triangular protruding part. The protruding part extends into the upper side of the tension spring so as to prevent the tension spring from clamping the connecting rod in the working process.

Furthermore, a return spring is arranged on the movable plate and connected to the locking plate, and the return spring enables the bayonet on the locking plate to be clamped with the clamping structure. After the anti-theft door is unlocked by using the key, the return spring can make the bayonet on the locking plate and the clamping structure on the supporting plate stably clamped, so that the main lock bolt can be stably kept in the lock body after the anti-theft door is opened.

Furthermore, the clamping structure is formed by a bending part on the supporting plate. The clamping structure is simple, and is convenient to realize clamping with the bayonet on the locking plate.

Compared with the prior art, the utility model discloses the beneficial effect who has: the triggering mechanism is arranged in the lock body and comprises the lock plate and the triggering piece, so that the latch bolt assembly can trigger the main lock bolt to extend out of the lock body, the structure is simple, the setting requirement of the local space in the lock body can be well met, and the anti-theft door lock is favorably saved in preparation cost. The trigger piece is set to be L-shaped, the trigger piece is hinged to the lock plate, the inclined tongue shifting piece is provided with the connecting head, the shifting column is arranged on the connecting head, the connecting head is in transmission connection with the connecting rod, when the key unlocking is realized or the inclined tongue block is opened by the inclined tongue shifting piece, the shifting of the shifting column can enable the raised head to be in a position of being opened, the main lock plunger cannot be triggered to extend out of the lock body when the inclined tongue block extends out of the lock body, the actual use requirement can be well met, and the situation that the main lock plunger extends out of the lock body to influence the closing of the anti-theft door in a door opening state is avoided.

Drawings

Fig. 1 is an internal structure view of the latch bolt locking anti-theft door lock.

Figure 2 is a block diagram of the main bolt and deadbolt assembly assembled within the lock body.

Fig. 3 is a structural view of the pallet.

Fig. 4 is a structural view of the key cylinder unlocking mechanism.

Fig. 5 is a structural view of the drive mechanism.

Fig. 6 is a state structural view in which the movable plate and the trigger mechanism are coupled together.

Fig. 7 is another state structural view in which the movable plate and the trigger mechanism are coupled together.

Detailed Description

The latch bolt touch-close anti-theft door lock is assembled on an anti-theft door, and when the door is naturally closed, after the door frame pushes and presses the latch bolt block 4, and the latch bolt block 4 resets and extends out of the lock body 1 and enters a corresponding lock bolt hole on the door frame, a trigger mechanism is started, so that the main lock bolt 3 can rapidly extend out of the lock body 1 to participate in locking the anti-theft door.

The structure of the anti-theft door lock comprises a box-shaped lock body 1, wherein a panel is arranged on the lock body 1, and corresponding lock bolts are concentrated at the position of the panel.

Referring to fig. 1 and 2, a latch bolt assembly is movably disposed in the lock body 1, and the latch bolt assembly includes a rod body 7 and a latch bolt block 4 connected to one end of the rod body 7, and the latch bolt block 4 is located at a panel position. The other end side of the rod body 7 is axially fixedly provided with a push sheet 6, and the push sheet 6 moves along with the rod body 7.

Referring to fig. 1 and 2, a latch bolt shifting sleeve assembly is further arranged in the lock body 1 for the door handle to be inserted and matched, so that the latch bolt block 4 is retracted into the lock body 1 by the door handle to realize the opening of the anti-theft door. The structure of the latch bolt shifting sleeve component comprises a sheet latch bolt shifting piece 12, and a shifting head 122 and a connecting head 121 which extend out are arranged on the latch bolt shifting piece 12. The shifting block 122 extends into the latch bolt assembly for shifting the latch bolt assembly, so that the latch bolt block 4 extends out or retracts into the lock body 1. The coupling head 121 is provided with a shifting column which is arranged perpendicular to the latch shifting piece 12.

In the figures 1, 2 and 3, a block-shaped main lock bolt 3 is positioned at a panel position, the main lock bolt 3 is fixedly connected with the end part of a supporting plate 2, a sliding column is vertically fixed on the supporting plate 2, two ends of the sliding column extend out of two opposite sides of the supporting plate 2, and a groove for the end part of the sliding column to be in clearance insertion fit is arranged on the bottom surface of a lock body 1. The pallet 2 is provided with a driving groove 21, and the driving groove 21 is provided in the lateral direction.

Referring to fig. 1, 2 and 5, a driving mechanism is further arranged in the lock body 1, the driving mechanism comprises a curved driving plate 13, the middle position of the driving plate 13 is rotatably arranged in the lock body 1, one end of the driving plate 13 is provided with a driving column, and the driving column is movably inserted into a driving groove 21 formed in the supporting plate 2. In the figure, the driving plate 13 is approximately arranged along the longitudinal direction, and two ends of a tension spring 8 which is arranged in the lock body 1 in the transverse direction are respectively connected with the other end of the driving plate 13 and the lock body 1, and under the action of the tension spring 8, the driving column acts on the supporting plate 2, so that the main lock bolt 3 keeps the trend of extending out of the lock body 1. The damper 11 is arranged in the lock body 1, the damper 11 is connected to the driving plate 13, and the damper 11 and the tension spring 8 are respectively arranged on two opposite sides of the driving plate 13.

Referring to fig. 1, 6 and 7, a movable plate 14 is movably disposed in the lock body 1, and the movable plate 14 is disposed at a position corresponding to the support plate 2. The movable plate 14 has a sliding slot 141 for the gap insertion of the sliding column, the sliding slot 141 is arranged along the longitudinal direction, the inner end of the sliding slot 141 has an inclined opening 142, and the inclined opening 142 is arranged obliquely relative to the sliding slot 141. After the main bolt 3 retracts to the inside of the lock body 1, the sliding column is located at the position of the bevel opening 142. If the movable plate 14 is fixed in the lateral direction, the inclined opening 142 will catch the sliding column to prevent the main bolt 3 from protruding toward the outside of the lock body 1.

Referring to fig. 1 and 4, a lock cylinder unlocking mechanism is movably arranged in the lock body 1, so that a key is inserted into the lock cylinder to unlock the anti-theft door lock. The structure of the lock core unlocking mechanism comprises a lock core plectrum 10, the lock core plectrum 10 is rotationally arranged in the lock body 1 through a pivot, one end of the lock core plectrum 10 is used for a lock core plectrum to act, the other end of the lock core plectrum is in transmission connection with a connecting head 121 on an oblique tongue plectrum 12 through a connecting rod 9, and the connecting rod 9 is usually sleeved on a plectrum. The connecting rod 9 is curved and protrudes towards a side plate of the lock body 1 opposite to the panel. The end of the link 9 coupled to the latch paddle 12 is formed with a triangular projection 91, and the projection 91 projects into the position of the tension spring 8 and is located on the upper side of the tension spring 8.

The lock cylinder shifting piece 10 is provided with a C-shaped opening, a convex angle 101 is formed on the lock cylinder shifting piece 10, and the lock cylinder shifting piece is used for being contacted with the end part of the C-shaped opening, so that the convex angle 101 pushes the driving column, and the main lock bolt 3 retracts into the lock body 1.

Referring to figures 1, 6 and 7, a trigger mechanism is provided in the lock body 1 so that the latch bolt assembly can urge the main bolt 3 out of the lock body 1. The structure of the trigger mechanism comprises a locking plate 16 and a trigger piece, the middle position of the locking plate 16 is rotatably arranged on the movable plate 14, a bayonet 161 at one end of the locking plate 16 is used for being clamped with a clamping structure 22 on the supporting plate 2 to realize the locking of the movable plate 14, the movable plate 14 cannot move in the transverse direction, and the clamping structure 22 is formed by a bent part on the supporting plate 2. The trigger piece is L-shaped and is movably coupled at its corner to the other end side of the lock plate 16 by a pivot (typically a rivet). The vertical part 18 of the trigger piece is provided with a projection 181 for hooking the push piece 6 of the latch bolt assembly, and the upper end side of the projection 181 is provided with an inclined surface in the direction shown in the figure, so that when the latch bolt block 4 retracts towards the lock body 1, the push piece 6 pushes the vertical part 18 away to sweep the projection 181 when being in contact with the inclined surface. During the process that the latch bolt block 4 extends out of the panel, the push sheet 6 enables the bayonet 161 to be separated from the clamping structure 22 through the trigger sheet. When the anti-theft door lock is opened by using a key or a handle, the shifting column on the latch bolt shifting piece 12 pushes the transverse part 17 of the trigger piece, so that the raised head 181 is out of the movement position of the push piece 6, and when the latch bolt block 4 extends out of the lock body 1, the raised head 181 cannot hook the push piece 6.

The movable plate 14 is provided with a return spring 15, the return spring 15 is connected to the lock plate 16, and the return spring 15 urges the bayonet 161 of the lock plate 16 to be engaged with the engaging structure 22.

Before the door is normally closed, the main lock bolt 3 retracts into the lock body 1, and the oblique tongue piece 4 extends out of the lock body 1. When the door is closed, the doorframe pushes the latch tongue 4, and the push piece 6 goes over the raised head 181. After the door is closed to the right position, under the action of the spring 5 sleeved on the rod body 7, the latch bolt block 4 extends out towards the outer side of the lock body 1, the protruding head 181 hooks the push sheet 6, the trigger sheet pulls the locking plate 16, and the bayonet 161 is disengaged from the clamping structure 22 on the supporting plate 2. Due to the pulling of the tension spring 8, the sliding column pushes the inclined opening 142, the movable piece moves transversely, the constraint on the sliding column is released, and the main lock bolt 3 can rapidly extend out of the lock body 1 under the action of the driving mechanism.

When the key is unlocked, the key is inserted into the lock cylinder, the key is pulled to rotate the shifting block on the lock cylinder, the lock cylinder shifting piece 10 is pushed, the convex angle 101 on the lock cylinder shifting piece 10 pushes the driving column, and the sliding column slides in the sliding groove 141. After the shifting block is separated from the lock cylinder shifting piece 10, the shifting block continues to rotate by a certain angle, and the shifting block pushes the movable plate 14 to move towards the direction of the latch bolt assembly, so that the inclined opening 142 is sleeved on the sliding column. After the movable plate 14 is moved to the proper position, the bayonet 161 of the locking plate 16 is engaged with the engaging structure 22 of the supporting plate 2 due to the action of the return spring, so as to limit the movement of the movable plate 14, and the main bolt 3 is stably retained in the lock body 1. When the lock core plectrum 10 acts, the latch plectrum 12 is pulled through the connecting rod 9, the plectrum on the connecting head 121 is pressed and connected with the transverse part 17 of the trigger piece, and meanwhile, the latch plectrum 12 is used for opening the latch block 4. After the key is released, the latch bolt block 4 rapidly extends out of the lock body 1, and due to the angle of the coupling head 121 and the arrangement of the column pulling position, the raised head 181 on the vertical part 18 does not reach the moving position of the push plate 6, and the latch bolt block 4 does not trigger the main lock bolt 3 to extend out of the lock body 1 when extending out of the lock body 1.

When the door handle is used for opening the door, the handle is pulled, the latch bolt shifting piece 12 rotates, the shifting head 122 enables the latch bolt block 4 to retract into the lock body 1, and the shifting column enables the raised head 181 on the trigger piece to be in the open position. After the handle is released, the latch bolt block 4 rapidly extends to the outside of the lock body 1, and due to the limitation of the shifting column, the push sheet 6 already passes over the position of the raised head 181 before the raised head 181 reaches the blocking position. Therefore, when the oblique tongue piece 4 is opened by using the handle, the main lock bolt 3 is not triggered to extend to the outer side of the lock body 1.

Claims (8)

1. The utility model provides a latch bolt touches and closes burglary-resisting door lock, includes the lock body, for box-like, has the panel, its characterized in that still includes:

the latch bolt component is movably arranged in the lock body and comprises a rod body and a latch bolt block connected to one end of the rod body, the latch bolt block is positioned at the position of the panel, and the other end side of the rod body is axially and fixedly provided with a push piece;

the latch bolt shifting piece is provided with a shifting head and a connecting head, the shifting head is used for shifting the latch bolt assembly, and the connecting head is provided with a shifting column;

the main lock bolt is fixedly connected with the end part of the supporting plate, a sliding column is vertically fixed on the supporting plate, and a clamping structure is formed on the supporting plate;

the driving mechanism elastically acts on the supporting plate to ensure that the main lock bolt keeps the trend of extending out of the lock body;

the movable plate is movably arranged in the lock body and is provided with a sliding groove for the gap insertion of the sliding column, the inner end of the sliding groove is provided with a bayonet, the bayonet is obliquely arranged relative to the sliding groove, and the sliding column is positioned at the position of the bayonet after the main lock bolt retracts into the lock body in place;

the lock core unlocking mechanism comprises a lock core shifting piece which is rotationally arranged in the lock body through a pivot, one end of the lock core shifting piece is used for the lock core shifting block to act, and the other end of the lock core shifting piece is in transmission connection with a connecting head on the latch bolt shifting piece through a connecting rod;

the trigger mechanism comprises a locking plate and a trigger piece, the middle position of the locking plate is rotatably arranged on the movable plate, and a bayonet at one end of the locking plate is used for being clamped with a clamping structure on the supporting plate to realize the locking of the movable plate; the trigger piece is L-shaped, the corner part of the trigger piece is movably arranged at the other end side of the locking plate, and the vertical part of the trigger piece is provided with a raised head for hooking the push piece in the latch bolt assembly, so that the push piece enables the bayonet to be separated from the clamping structure through the trigger piece in the process that the latch bolt block extends out of the outer side of the panel; when the oblique tongue block retracts into the lock body, the push sheet sweeps over the raised head; the shifting column on the latch shifting piece is used for acting on the transverse part of the trigger piece so as to lead the convex head to leave the motion position of the push piece.

2. The latch bolt touch-closing security door lock according to claim 1, wherein the driving mechanism comprises a curved driving piece, the middle position of the driving piece is rotatably arranged in the lock body, one end of the driving piece is provided with a driving column, and the driving column is movably inserted into a driving groove arranged on the supporting plate; two ends of the tension spring are respectively connected with the other end of the driving piece and the lock body.

3. The latch bolt touch latch lock of claim 2, wherein the lock body has a damper attached to the driver plate, the damper and the extension spring being spaced on opposite sides of the driver plate.

4. The deadbolt touch-close security door lock of claim 2, wherein the cylinder paddle has a C-shaped opening and a lobe formed therein, the cylinder paddle being adapted to contact an end of the C-shaped opening such that the lobe pushes against the drive stud.

5. The deadbolt touch-close security door lock of any one of claims 1-4, wherein the linkage is curved and projects toward a side plate of the lock body opposite the face plate.

6. The deadbolt touch-close security door lock of claim 5, wherein the end of the link that couples to the deadbolt paddle is formed with a triangular protrusion.

7. The latch bolt contact-closing security door lock according to any one of claims 1 to 4, wherein the movable plate is provided with a return spring, the return spring is connected to the locking plate, and the return spring urges the bayonet of the locking plate to be engaged with the engaging structure.

8. The latch bolt touch closing security door lock of claim 7, wherein said latch structure is formed by a bent portion of the support plate.

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