CN212837160U - Anti-opening device for oblique bolt of lock - Google Patents

Abstract

The utility model discloses a lock latch bolt is prevented inserting and is opened device, it has solved in the current lock latch bolt and has prevented that the inserted sheet can produce comparatively obvious nick and cause the problem of harm on the doorframe face. The structure comprises an anti-insertion piece movably arranged in the lock body, wherein the anti-insertion piece is used for moving between a blocking position and an unlocking position in the lock body so as to block an oblique tongue block from retracting into the lock body or release the blocking of the oblique tongue block; the outer end part of the trigger piece retracts into the lock body to enable the anti-insertion piece to be located at a blocking position, a contact structure is arranged between the latch bolt block and the trigger piece, and the latch bolt block is driven to retract into the lock body through the contact structure in the process of retracting into the lock body to drive the outer end part of the trigger piece to retract into the lock body.

Description

Anti-opening device for oblique bolt of lock

Technical Field

The utility model relates to a security door lock especially relates to a security door lock, when locking the door, prevents to utilize the inserted sheet to insert the anti-inserting device that opens of oblique tongue piece 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.

Chinese patent document (application number: 209942406U) discloses a door lock preventing oblique bolt from being inserted and opened, which solves the problem that the existing door lock preventing oblique bolt from being inserted and opened is troublesome to operate. The technical scheme is as follows: an anti-latch bolt insertion door lock comprises a lock body, a latch bolt assembly is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for a latch bolt block in the latch bolt assembly to pass through is formed in the panel, an anti-latch bolt is movably arranged in the lock body, and the anti-latch bolt is used for moving between a blocking position and an unlocking position so as to block the latch bolt block from retracting into the lock body or release the blocking of the latch bolt block; 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 anti-insertion piece is arranged in the anti-theft door lock, and under the action of the trigger piece and the anti-insertion piece, when the door closing inclined tongue piece retracts inwards, the anti-insertion piece is positioned at an unlocking position; when the latch bolt block locks the door, the anti-insertion piece is positioned at the position of blocking the latch bolt block. When closing the door, the door frame bulldozes the tip of trigger piece, and the trigger piece is internal to be drawn back to in the lock body. The thickness of the trigger piece is small, and the end part of the trigger piece can form obvious scratch on the surface of the door frame when the end part of the trigger piece scratches the door frame for a long time, so that the loss of the surface of the door frame is caused, and the attractiveness is influenced. In addition, when the anti-inserting piece blocks the latch bolt block, the stability of the anti-inserting piece is relatively poor, and if the curved needle is used, the free end of the anti-inserting piece can be easily pulled away from the blocking position, so that the latch bolt block can be conveniently inserted.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem who needs the solution: to provide an anti-opening device for a latch bolt, which is provided without causing an additional scratch on the surface of a door frame.

For solving the technical problem, the technical scheme of the utility model: an anti-plug device of a latch bolt is arranged in a hollow lock body, a latch bolt component is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for a latch bolt block in the latch bolt component to pass through is arranged on the panel, the anti-plug device comprises a movably arranged anti-plug sheet, the anti-plug sheet is used for moving between a blocking position and an unlocking position in the lock body so as to block the latch bolt block from retracting into the lock body or remove the blocking of the latch bolt block, a trigger sheet is movably arranged in the lock body, an opening for the outer end part of the trigger sheet to elastically stretch out is arranged on the panel, the trigger sheet is acted with the anti-plug sheet, and the outer end part of the trigger sheet stretches out of the lock body so as to enable the anti-plug sheet to be in the; the outer end part of the trigger piece retracts into the lock body to enable the anti-insertion piece to be located at a blocking position.

The trigger piece is driven by the latch bolt piece to the internal indentation of lock, and the latch bolt piece bulldozes the trigger piece towards the lock in-process of the internal indentation of lock through contact structure, and the trigger piece relieves the restriction to preventing the inserted sheet for prevent that the inserted sheet returns to the position of blockking to the latch bolt piece. The contact structure can be a contact rod as described below, or can be a ratchet structure, or the contact rod is arranged on the oblique tongue block to act on the trigger piece.

Furthermore, the contact structure comprises a contact rod arranged on the trigger piece, and the outer end of the contact rod extends into the movement range of the latch bolt block. After the oblique tongue piece moves towards the inside of the lock body, the contact rod can be pressed, so that the trigger piece moves along with the oblique tongue piece, the structure is simple, and the action stability of the oblique tongue piece on the trigger piece is good.

Furthermore, the contact rod and the trigger piece are connected into a whole and are formed by being divided by the trigger piece and then deformed. This facilitates the provision of the contact structure.

Furthermore, prevent being equipped with the driving lever on the plug-in sheet, the driving lever stretches to the trigger piece, is equipped with the shifting block that is used for carrying on stirring to the tip of driving lever on the trigger piece, and the driving lever sets up the position on preventing the plug-in sheet and corresponds with the range of motion of feeler lever for the trigger piece contracts to the position in the lock body after the feeler lever carries out the crimping to the driving lever. When the latch bolt locks the anti-theft door, the feeler lever can partially limit the anti-insertion piece and the anti-insertion piece can stably block the latch bolt block.

Compared with the prior art, the utility model discloses the beneficial effect who has: the contact structure is arranged between the latch bolt block and the trigger piece, the latch bolt block can drive the trigger piece to be linked together through the contact structure, when the door is closed, the end part of the trigger piece cannot slide on the surface of the door frame, and the arrangement of the trigger piece cannot influence the surface of the door frame. Can carry out the crimping through the driving lever of contact structure on preventing the inserted sheet for prevent that the stability of inserted sheet in the lock body is good, the lock prevents that the inserted sheet can not be dialled the position easily under the condition of normal locking, prevents that the inserted sheet is stable to the limiting action of oblique tongue piece, and the oblique tongue piece prevents inserting to open effectually.

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.

Detailed Description

The oblique tongue anti-opening device of the lock is arranged in a box-shaped lock body 1 and used for blocking an oblique tongue block 5 when the oblique tongue block 5 locks the door so as to prevent the oblique tongue block 5 from being easily inserted and opened by an inserting sheet inserted between the door and a door frame. The lock body 1 is movably provided with a latch bolt component which comprises a rod body 6 and a latch bolt block 5 connected at the outer end part of the rod body 6. The outer end face of the latch bolt block 5 is an inclined face, when the door is closed, the door frame pushes and presses the inclined face to enable the latch bolt block 5 to retract into the lock body 1, and after the door is closed to a proper position, the latch bolt block 5 is inserted into a lock bolt hole of the door frame under the action of a spring. A panel 2 is arranged on one side of the lock body 1, and a bolt hole for the latch bolt block 5 to pass through is arranged on the panel 2.

A shifting sleeve 11 is also rotatably arranged in the lock body 1, the shifting sleeve 11 is sheet-shaped, and the shifting sleeve 11 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 11 rotates in the lock body 1 through the inclined bolt push plate 12 arranged in the lock body 1, and then the inclined bolt component is driven to act, so that the inclined bolt block 5 retracts into the lock body 1, and the door lock is unlocked.

Be equipped with in lock body 1 movablely and prevent inserted sheet 8, prevent that the tip in of inserted sheet 8 articulates on the support column, cup joint torsional spring 9 on the support column and act on preventing inserted sheet 8 and support column. The anti-insertion piece 8 can move between a blocking position and an unlocking position in the lock body 1, and when the anti-insertion piece 8 is located at the blocking position, the outer end part of the anti-insertion piece 8 blocks the oblique tongue block 5 to retract into the lock body 1 in the movement direction of the oblique tongue block 5. When the anti-insertion piece 8 is located at the unlocking position, the anti-insertion piece 8 cannot block the oblique tongue block 5, and the oblique tongue block 5 can freely enter and exit the lock body 1.

The outer side of the hinged end of the inserting-proof piece 8 forms a protruding part through bending deformation, and a pushing piece 10 in the oblique tongue component is driven by a shifting sleeve 11 to act with the protruding part, so that the inserting-proof piece 8 is located at an unlocking position, and the oblique tongue piece 5 can freely retract into the lock body 1.

The trigger piece 4 is movably arranged in the lock body 1, and the movement of the anti-plugging piece 8 can also be acted by the trigger piece 4. The panel 2 is provided with an opening from which the trigger piece 4 can protrude outside the panel 2. The outer end side of the anti-insertion piece 8 is provided with a shifting lever 7 extending to the trigger piece 4, a shifting head 41 is formed on the trigger piece 4 in a bending mode, and the shifting head 41 extends towards the direction of the anti-insertion piece 8. The outer end face of the deflector rod 7 is a cambered surface, and the deflector head 41 is used for acting with the outer end part of the deflector rod 7. When the trigger piece 4 extends out of the lock body 1, the shifting head 41 pushes the outer end part of the shifting rod 7 to enable the insertion preventing piece 8 to deviate towards the outer side, the insertion preventing piece 8 is located at the unlocking position, and the inclined tongue piece 5 can smoothly retract into the lock body 1. In the actual application, the security door is usually in an open state, as shown in fig. 1, the states of the corresponding components in the lock body 1.

The trigger piece 4 is provided with a contact rod 42 extending to the latch bolt assembly, and the contact rod 42 is formed by bending and deforming the upper part of the trigger piece 4 after being divided into strips. The outer end of the contact rod 42 extends into the movement range of the latch bolt block 5, and when the latch bolt block 5 retracts towards the lock body 1, the contact rod 42 drives the trigger piece 4 to move towards the lock body 1. Because the front shifting head 41 pushes the anti-inserting piece 8 away through the shifting rod 7, the anti-inserting piece 8 cannot obstruct the retraction of the oblique tongue piece 5. After the door is closed to a proper position, the latch bolt block 5 enters the latch bolt hole of the door frame, the trigger piece 4 is kept in the lock body 1 due to the blocking of the door frame surface, the contact rod 42 on the trigger piece 4 is pressed on the shift lever 7, and the anti-insertion piece 8 is stably kept in a blocking position for the latch bolt block 5 (see fig. 2).

In order to facilitate the assembly of the trigger piece 4, a sheet-shaped bracket 13 is arranged in the lock body 1, and the trigger piece 4 is attached to the bracket 13. The trigger piece 4 is provided with a rivet, one end of the tension spring 3 is connected on the bracket 13, and the other end is connected on the rivet. The trigger piece 4, under the action of the tension spring 3, keeps its tendency to project towards the outside of the lock body 1.

Claims (4)

1. An anti-plug device of a latch bolt is arranged in a hollow lock body, a latch bolt component is movably arranged in the lock body, a panel is arranged on the lock body, a bolt hole for a latch bolt block in the latch bolt component to pass through is arranged on the panel, the anti-plug device comprises a movably arranged anti-plug sheet, the anti-plug sheet is used for moving between a blocking position and an unlocking position in the lock body so as to block the latch bolt block from retracting into the lock body or remove the blocking of the latch bolt block, a trigger sheet is movably arranged in the lock body, an opening for the outer end part of the trigger sheet to elastically stretch out is arranged on the panel, the trigger sheet is acted with the anti-plug sheet, and the outer end part of the trigger sheet stretches out of the lock body so as to enable the anti-plug sheet to be in the; the outer end part of the trigger piece retracts into the lock body to enable the anti-insertion piece to be located at a blocking position.

2. The lock latch bolt anti-unlatching apparatus of claim 1, wherein the contact structure comprises a feeler lever disposed on the trigger piece, an outer end of the feeler lever extending into a range of motion of the latch bolt block.

3. The device as claimed in claim 2, wherein the trigger bar is integrally connected to the trigger piece and is formed by being divided by the trigger piece and then deformed.

4. The device as claimed in claim 1, 2 or 3, wherein the anti-insertion piece is provided with a shift lever extending to the trigger piece, the trigger piece is provided with a shift head for shifting an end of the shift lever, and the shift lever is disposed on the anti-insertion piece at a position corresponding to a movement range of the trigger rod, so that the trigger piece retracts into position in the lock body and the trigger rod presses the shift lever.

Images