CN206245877U - A high-safety internal anti-opening mechanism for door locks - Google Patents

Abstract

The utility model discloses a high-security door lock internal anti-opening mechanism, comprising a handle, a panel, and an unlocking dial shaft. The handle is connected to the unlocking dial shaft through a linkage control structure. The linkage control structure comprises a button, a connecting piece, and a linkage column. The linkage column comprises a linkage part and a connecting part. When the button is not pressed, the handle is in an idling state and cannot be unlocked. When unlocking is required, the button is pressed and the handle is turned. The unlocking operation is simple. Under the premise of ensuring the convenient use of the internal opening and escape functions of the lock, the safety hazard of unlocking by using the cat's eye hole on the door body by the outside is eliminated, and the safety and anti-theft performance are higher.

Description

A high-safety internal anti-opening mechanism for door locks

technical field

The utility model relates to the field of locks, in particular to a high-safety internal anti-opening mechanism of a door lock.

Background technique

Door lock is a relatively common type of lock. It is usually designed to set the handle on the inside (inside the house or room) as an escape type, which can be unlocked directly by turning the inside handle without a key. However, in specific During the implementation process, people like to install peepholes and other devices that pass through the door body on the door. External personnel can directly penetrate iron wires or cables through the peepholes and other positions, and pull the handle to turn and unlock, so there are certain potential safety hazards.

Contents of the invention

In order to overcome the deficiencies of the prior art, the utility model provides a high-safety internal anti-opening mechanism of the door lock.

The technical scheme that the utility model solves its technical problem adopts is:

A high-security door lock internal anti-opening mechanism, including a handle, a panel, and an unlocking dial shaft, wherein the handle is rotatably arranged on the panel, and the handle can drive the unlocking dial shaft to rotate and unlock, and the handle is through a linkage The control structure is connected with the unlocking dial shaft, the end of the handle is provided with a handle head which is rotatably arranged on the panel, the unlocking dial shaft is rotatably arranged on the rear side of the panel, and the handle head is opposite to the end of the unlocking dial shaft, and The opposite end faces of the handle head and the unlocking dial shaft are respectively provided with a handle linkage groove and a dial shaft linkage groove. The cross section of the dial shaft linkage groove is a non-circular structure. The cross-section of the linkage groove corresponds, and the linkage control structure includes a button, a connector, and a linkage column. The linkage column includes a linkage part and a connection part. The depth of the linkage groove is greater than or equal to the length of the linkage part, the linkage part is slidably arranged in the dial shaft linkage groove, the connecting part is rotatably arranged on the connecting part, the button is connected to the connecting part and can drive the connecting part, thereby driving The linkage part of the linkage column completely slides into the linkage groove of the dial shaft or is caught between the linkage groove of the handle and the linkage groove of the dial shaft, so as to realize the linkage or separation of the handle and the dial shaft for unlocking.

The linkage control structure also includes a return spring, the connecting piece is slidably arranged in the handle linkage groove, the return spring is arranged in the handle linkage groove, and one end of the return spring presses against the bottom of the handle linkage groove, and the other One end presses against the connector.

The button is slidably arranged inside the handle, and a handle return spring capable of resetting the button to the pop-up state is arranged between the button and the handle. The button is extended with a driving hook, and a hole is opened on the side of the connector. The driving hook is arranged on the hole position.

The connecting piece is rotatably arranged at the end of the connecting part through a shoulder screw.

The cross-section of the shifting shaft linkage groove is square.

The knob is rotatably arranged on the panel through a bearing.

The handle head is also provided with a handle forward rotation control sheet and a handle reverse rotation control sheet, and the handle forward rotation control sheet and the handle reverse rotation control sheet are respectively provided with oppositely arranged draw hooks, and the draw hooks are connected to each other by a tension spring. The panel is connected to realize the forward and reverse reset of the handle.

The unlocking dial shaft is equipped with a reset mechanism.

The beneficial effect of the utility model is: a high-safety internal anti-opening mechanism of the door lock, including a handle, a panel, and an unlocking dial shaft, wherein the handle is rotatably arranged on the panel, and the handle can drive the unlocking dial shaft to rotate Unlocking, the handle is connected with the unlocking dial shaft through a linkage control structure, the end of the handle is provided with a handle head which is rotatably arranged on the panel, the unlocking dial shaft is rotatably arranged on the rear side of the panel, and the handle head and The ends of the unlocking dial shaft are opposite, and the handle head and the opposite end faces of the unlocking dial shaft are respectively provided with a handle linkage groove and a dial shaft linkage groove. The cross section of the corresponding end of the linkage groove corresponds to the cross section of the dial shaft linkage groove. The linkage control structure includes a button, a connector, and a linkage column. The linkage column includes a linkage part and a connection part. Corresponding to the cross-section of the dial shaft linkage groove, the depth of the linkage groove is greater than or equal to the length of the linkage part, the linkage part is slidably arranged in the linkage groove of the dial shaft, the connecting part is rotatably arranged on the connecting part, and the button is connected to the connecting part And can drive the connecting piece, so as to drive the linkage part of the linkage column to completely slide into the linkage groove of the dial shaft or be caught between the linkage groove of the handle and the linkage groove of the dial shaft, so as to realize the linkage or separation of the handle and the unlocking dial shaft, that is, the button is not pressed , the linkage part of the linkage column completely slides into the linkage slot of the dial shaft, so that the handle and the unlock dial shaft are in a separated state. When the button is pressed backward, the linkage part of the linkage column can be driven to slide backward and partially slide into the handle linkage The slot makes the handle and the unlocking shaft linked, that is, when the button is not pressed, the handle is in an idling state and cannot be unlocked, which improves safety. When it needs to be unlocked, just press the button to turn the handle, and the unlocking operation is simple. The utility model can eliminate the potential safety hazard of using the cat's eye hole on the door body for external unlocking on the premise of ensuring the lockset to be opened inwardly and the escape function is convenient to use, and has higher safety, reliability and anti-theft performance.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the exploded schematic view of the utility model;

Fig. 3 is one of cross-sectional schematic diagrams of the utility model;

Fig. 4 is the second schematic cross-sectional view of the utility model.

detailed description

Referring to Fig. 1 to Fig. 4, Fig. 1 to Fig. 4 are structural schematic diagrams of a specific embodiment of the present utility model, as shown in the figure, a kind of anti-opening mechanism inside the door lock of high safety, comprises handle 1, panel 2, unlocking The dial shaft 3, wherein the handle 1 is rotated and arranged on the panel 2, and the handle 1 can drive the unlock dial shaft 3 to rotate and unlock, the handle 1 is connected with the unlock dial shaft 3 through a linkage control structure, and the handle 1 The end is provided with a handle head 11 that is rotatably arranged on the panel 2, and the unlocking dial 3 is rotatably arranged on the rear side of the panel 2, and the handle 11 is opposite to the end of the unlocking dial 3, and the handle 11, unlocking The opposite end faces of the dial shaft 3 are respectively provided with a handle linkage groove 411 and a dial shaft linkage groove 412. The cross section of the dial shaft linkage groove 412 is a non-circular structure. Preferably, in this embodiment, the dial shaft linkage groove 412 The cross section is square, and of course it can also be elliptical, rectangular, triangular, hexagonal, etc. in the specific implementation process, which will not be described in detail here.

As shown in the figure, the section of the corresponding end of the handle linkage groove 411 and the dial shaft linkage groove 412 is the same as the cross section of the dial shaft linkage groove 412. The linkage control structure includes a button 42, a connecting piece 43, and a linkage column 44. The linkage The column 44 includes a linkage part 441 and a connection part 442. The cross section of the linkage part 441 corresponds to the cross section of the dial shaft linkage groove 412. In this embodiment, the cross section of the linkage part 441 is a square, and the connection part 442 is a Cylindrical structure, the depth of the dial shaft linkage groove 412 is greater than or equal to the length of the linkage portion 441, so that the linkage portion 441 can completely slide into the dial shaft linkage groove 412, and the connecting member 43 is rotatably arranged on the connecting portion 442 Above, preferably, in this embodiment, the connecting piece 43 is rotated at the end of the connecting part 442 through a shoulder screw 431, that is, a rotating hole corresponding to the shoulder screw 431 is opened in the center of the connecting part 442, and the shaft The shoulder screw 431 is threadedly connected to the end of the connecting part 442 through the rotation hole, so that the relative rotation between the connecting part 43 and the connecting part 442 can be realized. Of course, in the actual implementation process, there are other ways of rotating connection such as shaft fitting and pin fitting etc. will not be described in detail here.

As shown in the figure, the button 42 is slidably arranged inside the handle 1, and a handle return spring 421 capable of restoring the button 42 to the bounced state is disposed between the button 42 and the handle 1. The button 42 is extended with a drive The hook 422 is provided with a hole 432 on the side of the connector 43, and the driving hook 422 is hooked on the hole 432, which is convenient for a person to press the button 42 when holding the handle 1 to unlock the drive linkage control structure.

Preferably, the linkage control structure further includes a return spring 45, the connecting piece 43 is slidably arranged in the handle linkage groove 411, the return spring 45 is arranged in the handle linkage groove 411, and one end of the return spring 45 pushes It presses against the bottom of the handle interlocking groove 411 , and its other end presses against the connecting piece 43 , and the return spring 45 keeps the interlocking part 441 in a state of completely sliding into the dial shaft interlocking groove 412 .

When working, the button 42 drives the linkage part 441 of the linkage column 44 through the connecting piece 43 to completely slide into the dial shaft linkage groove 412 or catch between the handle linkage groove 411 and the dial shaft linkage groove 412, so as to realize the handle 1 and the unlocking dial. The linkage or separation of the shaft 3; specifically, when the button 42 is not pressed, the linkage part 441 of the linkage column 44 completely slides into the dial shaft linkage groove 412, so that the handle 1 and the unlock dial shaft 3 are in a separated state. When the button 42 is pressed, the linkage part 441 of the linkage column 44 can be driven to slide backward and partly slide into the handle linkage groove 411. At this time, the linkage part 441 is stuck between the handle linkage groove 411 and the dial shaft linkage groove 412, so that the handle 1 and The unlocking dial shaft 3 is linked, that is, when the button 42 is not pressed, the handle 1 is in an idling state and cannot be unlocked, which improves safety. When unlocking is required, press the button 42 to turn the handle 1, and the unlocking operation is simple. The utility model can eliminate the potential safety hazard of using the cat's eye hole on the door body for external unlocking on the premise of ensuring the lockset to be opened inwardly and the escape function is convenient to use, and has higher safety, reliability and anti-theft performance.

Preferably, the knob 11 is rotatably arranged on the panel 2 through a bearing 51 , and the bearing 51 is pressed and fixed by a bearing pressing plate 511 .

Preferably, the end of the handle head 11 passing through the panel 2 is provided with a rotating inner sleeve 520 and a compression nut 530 in sequence, and the compression nut 530 is threadedly matched with the end of the handle head 11 to compress the rotating inner sleeve 520 A nut stopper 540 is also arranged between the compression nut 530 and the handle head 11 to prevent the compression nut 530 from loosening, and the rotating inner sleeve 520 rotates synchronously with the handle head 11. Rotation control piece 52, handle reversal control piece 53, said handle forward rotation control piece 52, handle reversal control piece 53 are respectively provided with oppositely arranged pull hooks 521, said pull hooks 521 are connected with panel 2 through a tension spring , so as to realize the forward and reverse reset of the handle 1 .

Preferably, the unlocking dial 3 is equipped with a reset mechanism, which can be a torsion spring mechanism or a tension spring mechanism. As shown in the figure, the unlocking dial 3 is positioned on the rear side of the panel 2 through a dial 54 , the rear side of the panel 2 is provided with a number of mounting posts, the dial shaft pressing plate 54 is fixed on the mounting post on the panel 2 by screws and has a through hole for the unlock dial shaft 3 to pass through and rotate. One end of the dial shaft 3 passing through the dial shaft pressing plate 54 is provided with an outer ring portion 31 whose outer diameter is larger than the diameter of the through hole. By matching the rotation slot with the through hole, the unlocking dial shaft 3 is positioned so that the unlocking dial shaft 3 can rotate normally.

As shown in the figure, the reset mechanism includes a torsion spring 6 sleeved on the terminal end of the unlocking dial shaft 3 passing through the dial shaft pressing plate 54, the torsion spring 6 has two torsion arms 61, and the outer ring portion 31 is protrudingly provided with an active shifting block 311 that is inserted between the two torsion arms 61, and the upper protrusion of the shifting shaft pressing plate 54 is provided with a positioning block that is inserted between the two torsion arms 61 (not shown in the figure). shown), since the positioning block is fixed relative to the panel 2, when the unlocking dial shaft 3 rotates, the active shifting block 311 moves one of the torsion arms 61, and the positioning block prevents the other torsion arm 61 from rotating in the opposite direction. The function of torsion spring reset is formed, and the self-reset of the unlocking dial shaft 3 is realized.

The preferred implementation of the present utility model has been specifically described above. Of course, the present utility model can also adopt forms different from the above-mentioned embodiments, and those skilled in the art can make equivalent transformations or modifications without violating the spirit of the present invention. Corresponding changes should all belong to the protection scope of the present utility model.

Claims (8)

1. A high-security door lock internal anti-opening mechanism, including a handle (1), a panel (2), and an unlocking dial shaft (3), wherein the handle (1) is rotatably arranged on the panel (2), and The handle (1) can drive the unlocking dial shaft (3) to rotate and unlock, and it is characterized in that: the handle (1) is connected with the unlocking dial shaft (3) through a linkage control structure, and the end of the handle (1) is set There is a handle (11) which is rotatably arranged on the panel (2), and the unlocking dial shaft (3) is rotatably arranged on the rear side of the panel (2), and the handle (11) is connected to the end of the unlocking dial shaft (3) and the opposite end surfaces of the handle head (11) and the unlocking dial shaft (3) are respectively provided with a handle linkage groove (411) and a dial shaft linkage groove (412). The cross section of the dial shaft linkage groove (412) is non- circular structure, the section of the corresponding end of the handle linkage groove (411) and the dial shaft linkage groove (412) corresponds to the cross section of the dial shaft linkage groove (412), and the linkage control structure includes a button (42), a connector (43) . Linkage column (44), the linkage column (44) includes a linkage part (441) and a connection part (442), the cross section of the linkage part (441) corresponds to the cross section of the dial shaft linkage groove (412), the The depth of the dial shaft linkage groove (412) is greater than or equal to the length of the linkage part (441). (442), the button (42) is connected to the connector (43) and can drive the connector (43), thereby driving the linkage part (441) of the linkage column (44) to slide completely into the linkage groove (412) Or it is locked between the handle linkage groove (411) and the dial shaft linkage groove (412), so as to realize the linkage or separation of the handle (1) and the unlock dial shaft (3). 2. A high-security door lock internal anti-opening mechanism according to claim 1, characterized in that: the linkage control structure further includes a return spring (45), and the connecting piece (43) is slidably arranged on In the handle linkage groove (411), the return spring (45) is set in the handle linkage groove (411), and one end of the return spring (45) presses against the bottom of the handle linkage groove (411), and the other end presses on the connector (43). 3. A high security door lock internal anti-opening mechanism according to claim 2, characterized in that: the button (42) is slidably arranged inside the handle (1), and between the button (42) and the handle ( 1) A handle return spring (421) capable of returning the button (42) to the pop-up state is disposed between, the button (42) is extended with a drive hook (422), and the side of the connector (43) is provided with The hole position (432), the driving hook (422) is hooked on the hole position (432). 4. A high-security door lock internal anti-opening mechanism according to claim 1, characterized in that: the connecting piece (43) is arranged at the end of the connecting part (442) by rotating a shoulder screw (431) . 5. The high-safety internal anti-opening mechanism of the door lock according to claim 1, characterized in that: the cross-section of the shifting shaft linkage groove (412) is square. 6. A high security door lock internal anti-opening mechanism according to claim 1, characterized in that: the handle head (11) is rotatably arranged on the panel (2) through a bearing (51). 7. A high-security door lock internal anti-opening mechanism according to claim 1, characterized in that: the handle head (11) is also provided with a handle forward rotation control piece (52), a handle reverse rotation control piece (53), the handle forward rotation control piece (52) and the handle reverse control piece (53) are respectively provided with oppositely arranged pull hooks (521), and the pull hooks (521) are connected to the panel ( 2) Connect to realize the forward and reverse reset of the handle (1). 8. A high-security door lock internal anti-opening mechanism according to claim 1, characterized in that: the unlocking dial shaft (3) is equipped with a reset mechanism.