CN212389154U - Square tongue anti-prying mechanism and door lock - Google Patents

Abstract

The utility model discloses a square tongue pick-proof mechanism and lock, wherein, square tongue pick-proof mechanism includes the casing, scalable in the square tongue of casing one side, locate in the casing and can supply the key driven shifting block of unblanking and be used for driving the flexible rotatory shifting block of square tongue, rotatory shifting block is located in the casing and is connected with the shifting block transmission of unblanking, the spout has been seted up on the square tongue, rotatory shifting block has can follow gliding driving lever in the spout, wherein, when the square tongue stretches out one side of casing completely, the driving lever offsets with the inner wall of spout and forms the contained angle that can prevent the square tongue withdrawal with the spout. The square bolt anti-prying mechanism can prevent the square bolt from being pried back after being stretched out, and the safety of the door lock is improved.

Description

Square tongue anti-prying mechanism and door lock

Technical Field

The utility model belongs to the technical field of the tool to lock, concretely relates to square tongue pick-proof mechanism and lock.

Background

The world lock is a kind of tool to lock that can lock door upper and lower side brake piece when closing the lock, and its theory of operation is as follows: when the door is opened, the lock core is opened by a key, the square bolt retracts, the handle is pressed downwards for a certain angle (such as 45 degrees), the latch bolt retracts, meanwhile, the power rod drives the upper brake piece and the lower brake piece to retract, the door is opened, after the handle is released, the latch bolt extends out, and the handle can return; when the door is locked, the handle is lifted by a certain angle (such as 45 degrees), the power rod drives the upper brake piece and the lower brake piece to extend out, the lock core is locked by a key or an indoor operating knob, the square tongue also extends out for locking, the door is locked, and the handle can return after the handle is released. When the door is locked, the door is simultaneously limited by the upper and lower brake blocks, the square tongue and the oblique tongue, so that the door has better safety.

However, most of the dead bolt mechanisms of the existing top and bottom door locks do not have the anti-picking function, which undoubtedly reduces the safety of the door lock.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages of the prior art, an object of the present invention is to provide a dead bolt anti-prying mechanism, which can prevent the dead bolt from being pried back after being extended, and improve the safety of the door lock.

The utility model discloses a reach its purpose, the technical scheme who adopts as follows:

a square tongue pick-proof mechanism comprises a shell, a square tongue, an unlocking shifting block and a rotating shifting block, wherein the square tongue is telescopic on one side of the shell, the unlocking shifting block is arranged in the shell and can be driven by a key, the rotating shifting block is used for driving the square tongue to stretch, the rotating shifting block is arranged in the shell and is in transmission connection with the unlocking shifting block, a sliding groove is formed in the square tongue, the rotating shifting block is provided with a shifting rod capable of sliding in the sliding groove, and when the square tongue completely stretches out of one side of the shell, the shifting rod is abutted to the inner wall of the sliding groove and forms an included angle capable of preventing the square tongue from retracting with the sliding groove.

Furthermore, the deflector rod is in an L shape, wherein one end of the deflector rod is arranged opposite to the sliding groove and extends towards the sliding groove to form a sliding end, and the sliding end extends into the sliding groove and can slide along the sliding groove.

Furthermore, the rotating shifting block is also provided with a first gear part connected with the shifting lever, and the unlocking shifting block is provided with a second gear part, wherein the first gear part is meshed with the second gear part.

Further, the rotary shifting block is also provided with a rotating shaft part, wherein the rotating shaft part is arranged on the end face of the first gear part and is in running fit with the shell.

Furthermore, a reserved hole for inserting the key is formed in the second gear portion.

Further, the aforementioned anti-prying mechanism further comprises a sound-producing structure for producing a sound when the tongue is fully extended out of one side of the housing and/or when the tongue is fully retracted into one side of the housing.

Furthermore, the sounding structure comprises a convex rod, an elastic piece and a sounding pin which are arranged on the unlocking shifting block, and an arc contact surface which is arranged on the shell and faces the unlocking shifting block; the sounding pin is elastically stretched into one end of the convex rod through the elastic piece, and is in sliding contact with the arc contact surface; the arc contact surface is provided with a groove and a defect part which can enable the sounding pin to be separated from the arc contact surface in the arc length direction, wherein when the square tongue completely extends out of one side of the shell, the sounding pin extends into the defect part; when the square tongue is completely retracted to one side of the shell, the sounding pin extends into the groove.

Further, the surface of one end, in contact with the arc contact surface, of the sounding pin is an arc surface.

Correspondingly, the utility model discloses still provide a lock, including aforementioned square tongue pick-proof mechanism.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a square tongue pick-proof mechanism through set up the spout on the square tongue and set up on rotatory shifting block and can follow the gliding driving lever in spout for when the square tongue stretches out one side of casing completely, the driving lever offsets with the inner wall of spout and forms the contained angle that can prevent the square tongue withdrawal with the spout, so, can prevent that the square tongue from stretching out the back by maliciously prying back in the casing, thereby can effectively improve the security of lock.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic view of an overall structure of a door lock according to an embodiment of the present invention;

fig. 2 is a schematic front view of the anti-prying mechanism with the dead bolt extending out of the front bolt according to an embodiment of the present invention;

FIG. 3 is a schematic view of the embodiment of the present invention showing the tongue extending out of the front tongue picking prevention mechanism in a back state;

fig. 4 is a schematic front view of the anti-prying mechanism with the dead bolt fully extended from the rear bolt according to an embodiment of the present invention;

fig. 5 is a schematic view of a rear side of the anti-prying mechanism with the dead bolt fully extended according to an embodiment of the present invention;

fig. 6 is a schematic structural view of an unlocking moving block according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a sounding pin according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a rotary shifting block according to an embodiment of the present invention.

Description of reference numerals:

1-shell, 11-arc contact surface, 12-groove, 13-defect part, 2-square tongue, 21-sliding groove, 3-unlocking shifting block, 31-preformed hole, 32-second gear part, 33-convex rod, 34-sounding pin, 4-rotating shifting block, 41-shifting rod, 411-sliding end, 42-first gear part and 43-rotating shaft part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and detailed description. In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the described embodiments are merely some embodiments, rather than all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, fig. 2, fig. 4 and fig. 8, an embodiment of the present invention provides a square tongue pick-proof mechanism, including a housing 1, a scalable square tongue 2 on one side of the housing 1, an unlocking shifting block 3 which is arranged in the housing 1 and can be driven by a key, and a rotating shifting block 4 which is used for driving the square tongue 2 to stretch, the rotating shifting block 4 is arranged in the housing 1 and is in transmission connection with the unlocking shifting block 3, a sliding groove 21 is formed on the square tongue 2 (graphically, the length direction of the sliding groove 21 is perpendicular to the stretching direction of the square tongue 2), the rotating shifting block 4 has a shifting lever 41 which can slide along the sliding groove 21, wherein, when the square tongue 2 completely extends out of one side of the housing 1, the shifting lever 41 offsets with the inner wall of the sliding groove 21 and forms an included angle (graphically, the included angle is a right angle) which can prevent the square tongue 2 from retracting into the.

In this embodiment, the operating principle of the dead bolt anti-prying mechanism is as follows:

when locking a door, usable key rotates the shifting block 3 of unblanking, the shifting block 3 of unblanking drives rotatory shifting block 4 rotatory, at rotatory shifting block 4 pivoted in-process, driving lever 41 keeps away from the one end of unblanking shifting block 3 from spout 21 and is close to the other end that unblanking shifting block 3 to spout 21 and slides, at the gliding in-process of driving lever 41 along spout 21, driving lever 41 bulldozes the inner wall of spout 21, make square tongue 2 outwards slide and stretch out one side of casing 1 gradually, when square tongue 2 stretches out one side of casing 1 completely, accomplish the action of locking a door promptly, at this moment, driving lever 41 offsets and forms 90 contained angles with spout 21 with the inner wall of spout 21, realize the dieback of square tongue 2.

The square tongue pick-proof mechanism of the embodiment is characterized in that the sliding groove 21 is formed in the square tongue 2, and the shifting rod 41 capable of sliding in the sliding groove 21 is arranged on the rotary shifting block 4, so that when the square tongue 2 completely extends out of one side of the shell 1, the shifting rod 41 is abutted to the inner wall of the sliding groove 21 and forms an included angle capable of preventing the square tongue 2 from retracting with the sliding groove 21, and therefore the square tongue 2 can be prevented from being maliciously pried back into the shell 1 after extending out, and the safety of a door lock can be effectively improved.

Further, referring to fig. 2, 4 and 8, in an exemplary embodiment, the shift lever 41 is "L" shaped, wherein one end of the shift lever 41 is disposed opposite the slide slot 21 and extends toward the slide slot 21 to form a sliding end 411, and the sliding end 411 extends into the slide slot 21 and can slide along the slide slot 21.

In the embodiment, based on the above structural design, the shift lever 41 can drive the tongue 2 to extend out of or retract into the housing 1 during the process of sliding back and forth along the sliding slot 21, and the structure is simple and ingenious.

Further, referring to fig. 2, 4, 6 and 8, in an exemplary embodiment, the rotary dial 4 further has a first gear portion 42 connected with the dial 41 (illustratively, the dial 41 is connected with and integrated with the first gear portion 42), and the unlocking dial 3 has a second gear portion 32, wherein the first gear portion 42 is meshed with the second gear portion 32.

In this embodiment, based on the above structural design, the transmission connection between the rotating dial 4 and the unlocking dial 3 is realized, so that when the unlocking dial 3 is rotated by a key, the rotating dial 4 can drive the shift lever 41 to rotate synchronously, and further, while the shift lever 41 is rotated, the sliding end 411 thereof can slide back and forth along the sliding groove 21 to drive the square bolt 2 to extend out of or retract into the housing 1.

Further, referring to fig. 1, 2, 4 and 8, in an exemplary embodiment, the rotary dial 4 further has a rotary shaft portion 43, wherein the rotary shaft portion 43 is provided on an end surface of the first gear portion 42 and is rotatably fitted with the housing 1 (for example, a groove hole which is loosely fitted with the rotary shaft portion 43 is provided at a position of the housing 1 corresponding to the rotary shaft portion 43, so that the rotatable fitting between the rotary shaft portion 43 and the housing 1 can be achieved).

Further, referring to fig. 1, 2, 4 and 6, in an exemplary embodiment, the second gear portion 32 is formed with a reserved hole 31 for inserting a key. Illustratively, the preformed hole 31 is rectangular. It should be noted here that, in an actual application scenario, the side of the reserved hole 31 facing outdoors is available for a key to be inserted, so that a user can open/close the dead bolt 2 outdoors through the key to lock or unlock a door. And the side of the prepared hole 31 facing the indoor can be matched with a hand button, so that the user can open/close the square bolt 2 through the hand button in the indoor to realize door locking or door opening.

Further, referring to fig. 2-5, in an exemplary embodiment, the aforementioned deadbolt anti-pry mechanism further includes a sound emitting structure (not labeled) for emitting a sound when the deadbolt 2 is fully extended out of one side of the housing 1 and/or when the deadbolt 2 is fully retracted into one side of the housing 1.

In this embodiment, based on above-mentioned structural design, when the user accomplishes the action of locking the door or opening the door through the key, pronunciation structure can send out sound and feed back to the user for whether the sound judgement square bolt 2 that user's accessible pronunciation structure was sent has been stretched out completely or retract completely, so, not only can improve the user and reach and use experience, can guarantee the in-process of locking the door moreover, square bolt 2 can lock in place, is favorable to further improving the security that the lock used.

Further, referring to fig. 2 to 8, in an exemplary embodiment, the sounding structure includes a protruding rod 33 (illustratively, the protruding rod 33 is connected to and integrated with the second gear portion 32) provided on the unlocking dial 3, an elastic member (not shown) and a sounding pin 34, and a circular arc contact surface 11 provided on the housing 1 and disposed toward the unlocking dial 3; wherein, the sounding pin 34 is elastically extended and retracted in one end of the protruding rod 33 through an elastic member (specifically, a blind hole is formed in one end of the protruding rod 33, and the sounding pin 34 is installed in the blind hole through the elastic member, so that the sounding pin 34 can elastically extend and retract in one end of the protruding rod 33), and the sounding pin 34 is in sliding contact with the arc contact surface 11; the arc contact surface 11 is provided with a groove 12 and a defect part 13 which can make the sounding pin 34 separate from the arc contact surface 11 in the arc length direction, wherein, when the square tongue 2 completely extends out of one side of the shell 1, the sounding pin 34 extends into the defect part 13; when the tongue 2 is completely retracted to one side of the housing 1, the sounding pin 34 is extended into the groove 12. The elastic member may be a spring, a spring plate, a rubber band, or other elastic article, as long as the use requirement can be met, which is not limited in this embodiment. Illustratively, one end of the arc contact surface 11 is cut off to form the defect portion 13.

In the present embodiment, based on the above structural design, when the user uses the key to rotate the unlocking dial 3 to lock the door, the sounding pin 34 starts from the groove 12 and slides along the arc contact surface 11 to the defect portion 13, when the sounding pin 34 reaches the defect portion 13, the sounding pin 34 is separated from the arc contact surface 11 and extends into the defect portion 13 under the action of the elastic member, wherein when the sounding pin 34 is separated from the arc contact surface 11 and extends into the defect portion 13, the outer surface of the sounding pin 34 is rubbed to make a sound, so as to prompt the user that the square tongue 2 is locked in place; when the user uses the key to rotate the unlocking shifting block 3 to open the door, the sounding pin 34 starts from the defect part 13 and slides to the groove 12 along the arc contact surface 11, when the sounding pin 34 reaches the groove 12, the sounding pin 34 is separated from the arc contact surface 11 and extends into the groove 12 under the action of the elastic piece, wherein when the sounding pin 34 is separated from the arc contact surface 11 and extends into the groove 12, the outer surface of the sounding pin 34 is rubbed and impacts the inner wall of the groove 12 to make a sound, so that the user can be prompted that the square tongue 2 is completely retracted. It should be noted that, based on the inventive concept of the present embodiment, in other embodiments, when the end of the arc contact surface 11 away from the groove 12 continues to extend, the structural form of the defect portion 13 may also be the structural form of the groove 12.

Further, referring to fig. 3, 5 and 6, in an exemplary embodiment, an end surface of the sounding pin 34 contacting the arc contact surface 11 is a curved surface.

In the present embodiment, based on the above structural design, when the sounding pin 34 transitions between the groove 12 and the arc contact surface 11 and when the sounding pin 34 transitions between the defect portion 13 and the arc contact surface 11, the sliding of the sounding pin 34 can be made smoother.

Correspondingly, the embodiment of the utility model provides a still provide a lock, square tongue pick-proof mechanism including above-mentioned arbitrary embodiment.

In this embodiment, thanks to the improvement of the above-mentioned dead bolt anti-prying mechanism, the door lock of this embodiment has the same technical effect as the above-mentioned dead bolt anti-prying mechanism, and is not described herein again. It should be noted that the door lock of the present embodiment may be a top-bottom door lock or other type lock, and the present embodiment does not specifically limit this.

In addition, it should be noted that other contents of the dead bolt anti-prying mechanism and the door lock disclosed in the present invention can be referred to the prior art, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.

Claims (9)

1. The utility model provides a square tongue pick-proof mechanism, its characterized in that, including the casing, scalable in the square tongue of casing one side, locate in the casing and can supply the key drive the shifting block of unblanking and be used for driving the flexible rotatory shifting block of square tongue, rotatory shifting block is located in the casing and with the shifting block transmission of unblanking is connected, the spout has been seted up on the square tongue, rotatory shifting block has can follow gliding driving lever in the spout, wherein, when the square tongue stretches out completely one side of casing, the driving lever with the inner wall counterbalance of spout and with the spout forms the contained angle that can prevent the square tongue withdrawal.

2. The deadbolt anti-pry mechanism of claim 1, wherein said toggle is "L" shaped, wherein one end of said toggle is disposed opposite said slide slot and extends toward said slide slot to form a sliding end, said sliding end extending into and slidable along said slide slot.

3. The deadbolt anti-pry mechanism of claim 1, wherein said rotary toggle block further comprises a first gear portion coupled to said toggle lever, and said unlocking toggle block comprises a second gear portion, wherein said first gear portion is in meshing engagement with said second gear portion.

4. The deadbolt anti-pry mechanism of claim 3, wherein said rotary paddle further comprises a rotary shaft portion, wherein said rotary shaft portion is disposed on an end face of said first gear portion and is in rotational engagement with said housing.

5. The deadbolt anti-pry mechanism of claim 3, wherein said second gear portion defines a preformed hole for insertion of said key.

6. The deadbolt anti-pry mechanism of any one of claims 1-5, further comprising a sound producing structure for producing a sound when the deadbolt is fully extended out of one side of the housing and/or when the deadbolt is fully retracted into one side of the housing.

7. The deadbolt anti-pry mechanism of claim 6, wherein said sound-producing structure comprises a protruding rod, a resilient member and a sound-producing pin disposed on said unlocking paddle, and a radiused contact surface disposed on said housing and facing said unlocking paddle; the sounding pin is elastically stretched into one end of the convex rod through the elastic piece, and is in sliding contact with the arc contact surface; the arc contact surface is provided with a groove and a defect part which can enable the sounding pin to be separated from the arc contact surface in the arc length direction, wherein when the square tongue completely extends out of one side of the shell, the sounding pin extends into the defect part; when the square tongue is completely retracted to one side of the shell, the sounding pin extends into the groove.

8. The deadbolt anti-pry mechanism of claim 7, wherein said articulation pin has a curved surface on an end surface thereof in contact with said arcuate contact surface.

9. A door lock including a deadbolt anti-picking mechanism according to any of claims 1 to 8.

Images