CN209942406U - Door lock preventing oblique bolt from being inserted and opened - Google Patents

Abstract

The utility model discloses a prevent oblique spring bolt and insert out-of-lock, it has solved the current problem of preventing oblique spring bolt and inserting out-of-lock troublesome poeration. The technical scheme is as follows: an anti-oblique-tongue-inserted door lock comprises a lock body, an oblique tongue component is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for the end part of the oblique tongue component to pass through is formed in the panel, an anti-insertion piece is movably arranged in the lock body and used for moving between a blocking position and an unlocking position so as to block the end part of the oblique tongue component from retracting into the lock body or release the blocking of the oblique tongue, and the anti-oblique-tongue-inserted door lock is characterized in that a trigger piece is movably arranged in the lock body, an opening for the outer end part of the trigger piece to elastically extend out is formed in the panel, and the trigger piece is acted with the anti-insertion piece so that the outer end part of the trigger piece extends out of the lock body to enable; the outer end of the trigger piece retracts into the lock body to enable the anti-insertion piece to be in a blocking position.

Description

Door lock preventing oblique bolt from being inserted and opened

Technical Field

The utility model relates to a security door lock especially relates to one kind and when locking the door, prevents to utilize the inserted sheet to insert the security door lock that the latch bolt was opened from the door outside.

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 deadbolt and deadbolt assembly that both effect latching of 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 door handle on the outside of the door. In the actual use process, a resident with relatively poor safety awareness sometimes goes out with a handle door, and the locking of the anti-theft door is realized only by utilizing the latch bolt assembly. Under most existing conditions, the latch bolt in the latch bolt assembly in the anti-theft door lock can smoothly enter and exit the lock body, and in addition, in order to facilitate the door closing, the inclined plane on the latch bolt faces the outer side of the door. Therefore, in the case of locking the door only by using the latch bolt, the latch bolt can be easily pushed into the lock body by inserting the elastic sheet between the door and the door frame at the position of the latch bolt on the outer side, so that the opening of the door is realized, and the safety of locking the door is relatively poor.

The invention discloses a theft-proof door lock in Chinese patent application (application number: 201210021576.7), which comprises a lock body, wherein a shifting fork is arranged in the lock body, and an anti-insertion device, an anti-pressure device and/or an anti-pulling device are arranged in the lock body; the anti-insertion device comprises: the ejector rod is used for ejecting the lock tongue and forming fit with the shifting fork; a pressing tongue or a pressing sheet device for poking the position of the ejector rod. The anti-theft door lock provided by the invention has the functions of preventing insertion, pressing and pulling by adopting the structure. The difficulty and the time for unlocking the door lock from the outside without using a key are greatly increased, and the life and property safety of the owner of the door lock is protected.

The anti-inserting device and the anti-pressing device are arranged in the anti-theft door lock, so that the locking safety of the anti-theft door can be effectively improved. However, when the latch bolt retracts into the lock body each time, the anti-insertion piece needs to be unlocked through the shifting sleeve by using a handle or a key, and then the movement of the latch bolt can be realized, so that the operation of locking the door is very troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who needs the solution: the door lock is good in safety and convenient in door locking operation when the oblique bolt is used for timing the door lock.

For solving the technical problem, the technical scheme of the utility model: an anti-oblique-tongue-inserted door lock comprises a lock body, an oblique tongue component is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for the end part of the oblique tongue component to pass through is formed in the panel, an anti-insertion piece is movably arranged in the lock body and used for moving between a blocking position and an unlocking position so as to block the end part of the oblique tongue component from retracting into the lock body or release the blocking of the oblique tongue, and the anti-oblique-tongue-inserted door lock is characterized in that a trigger piece is movably arranged in the lock body, an opening for the outer end part of the trigger piece to elastically extend out is formed in the panel, and the trigger piece is acted with the anti-insertion piece so that the outer end part of the trigger piece extends out of the lock body to enable; the outer end of the trigger piece retracts into the lock body to enable the anti-insertion piece to be in a blocking position.

The trigger piece is acted with the anti-insertion piece, can be a bent part and a shifting lever which are connected to achieve the purpose, can also be a gear and rack matched structure, and can also be used for realizing the movement of the anti-insertion piece in the lock body through the action of the trigger piece and the bending of the anti-insertion piece. When the anti-theft door is opened, the outer end part of the trigger piece extends out of the outer side of the lock body, and when the anti-theft door is closed, the door frame can push the trigger piece into the lock body, so that the anti-insertion piece is positioned at a blocking position to block the action of retracting the latch bolt assembly into the lock body, and the aim of preventing the latch bolt from being inserted is fulfilled. The outer end part of the trigger piece elastically extends out of the lock body, and means the trend that the outer end part of the trigger piece keeps extending out of the lock body under the action of a torsion spring, a push spring or a tension spring.

Furthermore, the inner end of the anti-insertion piece is hinged in the lock body, the outer end of the anti-insertion piece is a free end, the anti-insertion piece blocks the latch bolt assembly through the outer end of the anti-insertion piece, a shifting rod extending to the trigger piece is arranged on the outer end side of the anti-insertion piece, and the trigger piece plays a role in preventing the insertion piece through the shifting rod. Through set up the driving lever on preventing the inserted sheet and trigger the piece and act on mutually for be convenient for set up trigger piece and prevent the inserted sheet in the lock body, can utilize the space in the lock body well, in order to avoid causing the motion to interfere.

Furthermore, a bending part protruding towards the shifting lever is arranged on the trigger piece, the outer end face of the shifting lever is an arc face, and the bending part is used for acting with the outer end part of the shifting lever. The action structure between the trigger piece and the shifting rod ensures that the structure is simple, and the trigger piece can well promote the anti-insertion piece to act to a target position.

Furthermore, a support is arranged in the lock body, the trigger piece is connected to the support in an attaching mode, the tension springs respectively act on the support and the trigger piece, and the trigger piece extends out towards the outer side of the lock body under the action of the tension springs. The support is arranged, so that the action stability of the trigger piece in the lock body is good, and the effect of the trigger piece on the anti-insertion piece is facilitated.

Compared with the prior art, the utility model discloses the beneficial effect who has: the anti-insertion piece is movably arranged in the door lock, the oblique bolt component is blocked or unblocked through the anti-insertion piece moving in the lock body, so that the oblique bolt is not easy to be inserted from the outer side of the door when the door is locked, the timing safety of the door lock by independently utilizing the oblique bolt is ensured, the convenience of locking the door is improved, and the basic safety requirements of people with relatively poor safety consciousness are well met. Through setting up the trigger piece, the outer end of trigger piece can stretch out the lock body outside, and at the lock timing, trigger the piece and push into the lock body by the door frame in, and realize preventing that the inserted sheet blocks to the oblique tongue subassembly. The anti-insertion piece is in the blocking position or the blocking removal is related to the state of the door (closing or opening the door), and the arrangement of the trigger piece is well suitable for normal door opening and closing actions, the door or the door lock does not need to be additionally operated, and the operation is convenient and fast.

Drawings

Fig. 1 is a diagram showing the relative positions of respective parts in a lock body in a door-open state.

Fig. 2 is a view showing the relative positions of respective parts in the lock body in the closed state.

Fig. 3 is a structural diagram of relative positions of corresponding parts in the lock body when the latch bolt is unlocked by the shifting sleeve.

Detailed Description

The structure of the door lock for preventing the oblique bolt from being inserted and unlocked comprises a box-shaped lock body 1, and corresponding movable parts in the door lock are arranged in the lock body 1. A latch bolt assembly is movably disposed in the lock body 1, and includes a rod body 51 and a latch bolt 52 coupled to an outer end of the rod body 51. The latch bolt 52 is block-shaped, and one side of the latch bolt 52 is an inclined surface. A panel 10 is arranged on one side of the lock body 1, and a bolt hole for the latch bolt 52 to pass through is arranged on the panel 10.

The lock body 1 is also provided with a shifting sleeve 2 in a rotating way, the shifting sleeve 2 is in a sheet shape, and the shifting sleeve 2 is connected with the latch bolt component. The latch bolt component can be driven by a lock head or a door handle to move, in the application, the door handle refers to a handle on the inner side of a door, and a handle on the outer side is fixed. The lock head is arranged on the lock body 1, the shifting block on the lock head realizes that the shifting sleeve 2 rotates in the lock body 1 through the push rod 9 arranged in the lock body 1, and then the inclined tongue component is driven to act, so that the inclined tongue 52 retracts into the lock body 1, and the door lock is unlocked.

Be equipped with in lock body 1 movablely and prevent inserted sheet 4, prevent that the interior tip of inserted sheet 4 articulates on the support column, cup joint on the support column torsional spring effect prevent on inserted sheet 4 and the support column. The anti-insertion piece 4 can move between a blocking position and an unlocking position in the lock body 1, and when the anti-insertion piece 4 is located at the blocking position, the outer end part of the anti-insertion piece 4 blocks the latch bolt 52 from retracting into the lock body 1 in the movement direction of the latch bolt 52; when the anti-insertion piece 4 is at the unlocking position, the anti-insertion piece 4 cannot block the oblique tongue 52, and the oblique tongue 52 can freely enter and exit the lock body 1.

The anti-insertion piece 4 is bent and deformed to form a protruding part 41, and the connecting rod limiting piece 3 in the oblique tongue component is driven by the shifting sleeve 2 to act with the protruding part 41, so that the anti-insertion piece 4 is located at an unlocking position, and the oblique tongue 52 can freely retract into the lock body 1.

A trigger plate 6 is movably arranged in the lock body 1, and the movement of the anti-insertion plate 4 can also be acted on by the trigger plate 6. The panel 10 is provided with an opening from which the trigger piece 6 can protrude to the outside of the panel 10. When the outer end of the trigger piece 6 extends to the outside of the panel 10, the anti-insertion piece 4 is in the unlocking position under the action of the trigger piece 6, as shown in fig. 1, and the anti-theft door is normally in the open state. After the anti-theft door is closed, the outer end part of the trigger piece 6 retracts into the lock body 1 due to the pushing of the door frame, and the anti-insertion piece 4 is in a blocking position at the moment, as shown in fig. 2. As shown in fig. 3, to completely open the security door, the dial sleeve 2 is driven by a key or a door handle, so that the connecting rod limiting piece 3 pushes the insertion-preventing piece 4, the outer end of the insertion-preventing piece 4 is deviated to the outside, and the latch bolt 52 can be freely retracted into the lock body 1.

As shown in the figure, a lever 42 extending to the trigger piece 6 is provided on the outer end side of the insert-preventing piece 4, and the trigger piece 6 acts on the insert-preventing piece 4 via the lever 42. The trigger piece 6 is bent to form a bent portion, and the bent portion protrudes toward the lever 42. The outer end face of the shift lever 42 is a curved surface, and the bent portion is used for acting with the outer end portion of the shift lever 42. When the trigger piece 6 extends to the outside of the lock body 1, the bent portion pushes the outer end portion of the shift lever 42 to bias the anti-insertion piece 4 to the outside, so as to smoothly close the door. The outer end of the trigger piece 6 is similar to the latch 52, and the outer end of the trigger piece 6 also has a slope, so that when the door is closed, the slope contacts the door frame, so that the door frame can push the trigger piece 6 into the lock body 1 smoothly.

In order to facilitate the assembly of the trigger piece 6, a sheet-shaped bracket 8 is arranged in the lock body 1, and the trigger piece 6 is attached to the bracket 8. The trigger piece 6 is provided with a rivet, one end of the tension spring 7 is connected on the bracket 8, and the other end is connected on the rivet. The trigger plate 6 is kept in a tendency to project towards the outside of the lock body 1 by the tension spring 7.

Claims (4)

1. An anti-oblique-tongue-inserted door lock comprises a lock body, an oblique tongue component is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for the end part of the oblique tongue component to pass through is formed in the panel, an anti-insertion piece is movably arranged in the lock body and used for moving between a blocking position and an unlocking position so as to block the end part of the oblique tongue component from retracting into the lock body or release the blocking of the oblique tongue, and the anti-oblique-tongue-inserted door lock is characterized in that a trigger piece is movably arranged in the lock body, an opening for the outer end part of the trigger piece to elastically extend out is formed in the panel, and the trigger piece is acted with the anti-insertion piece so that the outer end part of the trigger piece extends out of the lock body to enable; the outer end of the trigger piece retracts into the lock body to enable the anti-insertion piece to be in a blocking position.

2. The anti-latch-bolt-insertion-opening door lock according to claim 1, wherein the inner end of the anti-latch bolt is hinged in the lock body, the outer end is a free end, the anti-latch bolt blocks the latch bolt assembly through the outer end, a shift lever extending to the trigger piece is arranged on the outer end side of the anti-latch bolt, and the trigger piece acts on the anti-latch bolt through the shift lever.

3. The door lock according to claim 2, wherein the trigger piece has a bent portion protruding toward the lever, and the outer end surface of the lever has a curved surface, and the bent portion is adapted to interact with the outer end portion of the lever.

4. The door lock according to claim 1, 2 or 3, wherein the lock body has a support, the trigger piece is attached to the support, the tension spring is respectively applied to the support and the trigger piece, and the trigger piece extends out toward the outside of the lock body under the action of the tension spring.

Images