CN111593948A

CN111593948A - Safety lock core and safety lock

Info

Publication number: CN111593948A
Application number: CN202010542868.XA
Authority: CN
Inventors: 黄智�
Original assignee: Ningbo Dongqianhu Tourist Resort Xianda Hardware Co ltd
Current assignee: Ningbo Dongqianhu Tourist Resort Xianda Hardware Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2020-08-28

Abstract

The invention discloses a safety lock cylinder which comprises an outer lock cylinder group, an inner lock cylinder group, a lock shell and an anti-pulling poking wheel, wherein a wide groove for accommodating the anti-pulling poking wheel is arranged on the lock shell, a long and thin easy-to-break groove is also arranged on the end surface of the wide groove close to one side of the outer lock cylinder group, a groove is formed in the outer ring of the poking wheel, a boss extending into the groove is correspondingly arranged on the lock shell to limit the poking wheel to be pulled out, and the invention also discloses an internal resistance block structure capable of being sleeved on a main shaft. The invention solves the problems of poor anti-dialing performance and low safety of the original lock cylinder.

Description

Safety lock core and safety lock

Technical Field

The invention relates to a lockset, in particular to a safety lock cylinder.

Background

When the lock is unlocked by a common key, the handle core and the knob rotate together with the key, the lock can be unlocked by rotating the knob, and if a hole is formed in the door, a thief can stir the knob through the hole to unlock the lock; the general lock has the advantages that the internal part and the poking wheel are clamped together and not clamped with the outer lock cylinder, a thief can insert the internal part into the key slot through the small sheet and poke the internal part to unlock, and the general lock has no anti-poking function; after the outer lock shell of the general lock is disconnected, the thumb wheel can be easily rotated, the lock is easily opened, and the general lock has no self-protection function of preventing from being broken.

As shown in fig. 1, a general lock core structure in the prior art is provided, when an external lock is unlocked, the

pins

9 and 10 correspondingly move downwards along with the advance of the key 2, the pins 9 are flush with the outer circle of the lock core 3, the lock core 3 can rotate in the lock shell 1, the tip part of the key 2 is inserted into the groove of the internal part 4, the internal part 4 and the thumb wheel 5 are connected together through the support lug of the internal part, and the support lug of the thumb wheel 5 is clamped with the groove of the handle core 7 (the spring 6 is used for supporting the internal part 4, so that the internal part is connected with the thumb wheel 5 directly). Thus, the key 2 is rotated to rotate the thumb wheel 5 to achieve the unlocking function. The lock of the device, when the key 2 is rotated, the handle core 7 and the knob 8 are also rotated together. As shown in fig. 2, the groove width of the general lock core is 2.4mm, the component 14 can be pushed into the groove of the internal component 4 by using the steel wire head with the inclination of a slightly bent point with 2 mm, the component 14 can be rotated to unlock, moreover, the lock core is very easy to be pried and broken at the position of the M5 threaded hole, after the prying and breaking, the thumb wheel is exposed, a thief can easily rotate the thumb wheel, thereby achieving the purpose of opening the door, and the lock core has no self-protection function of preventing from breaking, so that the poking prevention performance of the general lock is very poor.

When the lock is installed on a door, the lock shell is usually exposed on the door more than 10 mm and used for installing a handle guard plate, the guard plate can be easily pried off by using a flat screwdriver, the exposed 10 mm lock shell is easy to clamp so as to pry off the outer lock shell, and after the outer lock shell is pried off, the structure is as shown in figure 3, and the internal part 4 is rotated, so that the thumb wheel can be easily rotated, and the lock can be easily unlocked; the lock is unlocked only by prying the outer lock shell off. The lock with the structure has no pick-proof function at all.

Therefore, how to design a lock core structure with high poking-proof performance and strong anti-prying function becomes a problem to be solved urgently at present.

Disclosure of Invention

The invention aims to provide a safe lock cylinder to solve the problems of poor anti-dialing performance and low safety of the original lock cylinder.

In order to achieve the above purpose, the invention provides the following technical scheme:

a safety lock cylinder comprises an outer lock cylinder group, an inner lock cylinder group, a lock shell and an anti-pulling shifting wheel, and is characterized in that a wide groove for accommodating the anti-pulling shifting wheel is formed in the lock shell, a long and thin easy-to-break groove is further formed in the end face of the wide groove close to one side of the outer lock cylinder group, a groove is formed in the outer ring of the shifting wheel, and a boss extending into the groove is correspondingly formed in the lock shell to limit the shifting wheel to be pulled out.

Further, outer lock core group includes the main shaft, interior lock core group includes the thumb wheel core, prevents changeing the core and unblock core, the main shaft of outer lock core group stretches into to interior lock core group still the cover is equipped with interior driving medium and interior stopper on the main shaft, leave in the thumb wheel core and hold the space of interior stopper and this space below distance interior stopper has one section interval in order to provide the space that falls down after outer lock core group drops.

Furthermore, the first end of the anti-rotation core is inserted into the inner part of the thumb wheel core and connected, the first end of the unlocking core is inserted into the second end of the anti-rotation core and is linked through an unlocking pin shaft, the unlocking core is provided with a concave structure, and one side of the concave structure is an annular cam.

Furthermore, the first end of the anti-rotation core is provided with a clamping groove, when the door is not unlocked, a first clamp pin is clamped into the clamping groove of the anti-rotation core, when a knob in the door rotates, the unlocking core is driven to rotate, the anti-rotation core is driven to move in and out in parallel, after the anti-rotation core moves inwards for a certain distance, the first clamp pin is not clamped in the clamping groove of the anti-rotation core, the anti-rotation core can rotate freely, and then the dial wheel core is driven to rotate.

Further, the width of the wide groove is 16-28 mm.

Furthermore, the outer lock cylinder group further comprises an outer lock cylinder, an outer transmission member parent body and an outer transmission member parent body spring, wherein the outer transmission member main shaft is arranged in the outer transmission member parent body, the outer transmission member parent body is sleeved inside the outer lock cylinder, and the outer transmission member parent body is linked with the outer lock cylinder through an outer transmission member blocking pin.

Furthermore, the unlocking pin shaft extends into the recessed structure and acts along the inner wall surface of the recessed structure.

Furthermore, the anti-pulling thumb wheel is hollow, the outer lock core is inserted into the first end of the anti-pulling thumb wheel, and the thumb wheel core, the inner transmission piece and the internal resistance block are all located in the anti-pulling thumb wheel.

Furthermore, the bottom of the easy-breaking groove has a height difference from the bottom of the anti-pulling wheel which is overlapped on the wide groove at the upper part.

Compared with the prior art, the safety lock cylinder provided by the invention has the following technical effects:

1. according to the invention, the easily broken groove structure is designed on the lock shell, so that the position of the lock shell which is warped and broken is arranged at the easily broken groove, at the moment, the M5 threaded hole is also hidden in the lock body, the rest lock cylinder is also fixed in the lock body, and the groove of the thumb wheel is combined with the boss on the lock shell, so that the rest lock cylinder and the thumb wheel cannot be pulled out.

2. The invention is designed with a blocking block structure, when the outer lock cylinder group falls off, the blocking block falls down to block the inner transmission part from moving inwards, and at the moment, the thumb wheel cannot rotate, thereby realizing the self-locking function.

3. The unlocking core is provided with the concave structure, when the unlocking core rotates along with the knob, the anti-rotation core can be driven to move in parallel inside and outside, and the first clamping pin is not clamped in the groove of the anti-rotation core, so that the anti-rotation core can rotate freely, and the door is unlocked.

Drawings

Fig. 1 is a first schematic structural diagram of a lock cylinder in the prior art.

Fig. 2 is a schematic structural diagram of a lock cylinder in the prior art.

Fig. 3 is a schematic structural diagram three of a lock cylinder in the prior art.

Fig. 4 is a schematic overall structure diagram of the safety lock cylinder in the embodiment of the invention.

Fig. 5 is a structural view of a security key cylinder in an initial state when a door is locked according to an embodiment of the present invention.

Fig. 6 is a structural view of the safety lock cylinder in the embodiment of the present invention in the door-out unlocked state.

Fig. 7 is a structural diagram of the security lock cylinder in the embodiment of the present invention in the initial state when the lock is lifted off.

FIG. 8 is a block diagram of the safety lock cylinder lock of the embodiment of the present invention when it is unlocked from the inside of the door after it is cocked.

Fig. 9 is a schematic view of the connection between the outer cylinder group and the inner cylinder group according to the embodiment of the present invention.

FIG. 10 is a schematic view showing the connection between the rotation preventing core and the dial wheel core in the embodiment of the present invention.

FIG. 11 is a schematic view showing the connection of the unlocking core and the rotation preventing core in the embodiment of the present invention.

Fig. 12 is a schematic structural diagram of an internal lock cylinder assembly in the embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 4 to 12, an embodiment of the present invention provides a safety lock cylinder, including an outer lock cylinder assembly, an inner lock cylinder assembly, a lock case 21 and an anti-pull dial wheel 22, wherein the outer lock cylinder assembly includes an outer lock cylinder core 31, an outer transmission spindle 32, an outer transmission parent body 33, an outer transmission spring 34, which are assembled with each other, the inner lock cylinder assembly includes an inner transmission member 41, a dial wheel core 42, an anti-rotation core 43, an inner core spring 44, an unlocking core 45, and a knob 46, the outer lock cylinder assembly is substantially biased toward an outer side of a door, the inner lock cylinder assembly is substantially biased toward an inner side of the door, the lock case includes a left lock case, a right lock case, and a lock case connector, which are integrally formed, a threaded hole 215 (mounting hole) M5 is provided on a connector between the left lock case and the right lock case, wherein the outer lock cylinder is accommodated in the left lock case, the anti-rotation core 43 and the unlocking core 45 are accommodated in the right lock case, a wide groove 211 accommodating the anti-pull, the wide groove 211 is provided with a step shape, the anti-pulling dial wheel 22 is just completely supported on the step, the dial wheel head 222 is arranged in the hollow groove in the middle of the wide groove, a distance is reserved between the dial wheel head and the bottom of the hollow groove, a long and thin easy-breaking groove 212 is further formed in the connecting piece close to one side of the left lock shell, the easy-breaking groove 212 is also located on the end face of the wide groove 211, a height difference is reserved between the bottom of the easy-breaking groove 212 and the top of the step, namely when the anti-pulling dial wheel 22 is arranged on the step of the connecting piece, a height is reserved between the bottom of the anti-pulling dial wheel 22 and the bottom of the groove, the width of the wide groove 211 is 16 mm-28 mm, preferably 24mm, and is far larger than the groove width. The outer ring of the thumb wheel is provided with a groove 221, the groove 221 can be an annular groove, and a boss 213 which can extend into the groove 221 is arranged at a corresponding position on the lock shell connecting piece to limit the thumb wheel to be pulled out. Because the easy-breaking groove 212 is arranged on the lock shell, the width of the easy-breaking groove 212 is narrow, the strength of the lock shell at the position is weaker than that at other positions, when the lock shell is warped, the warping position is probably appeared at the position of the easy-breaking groove 212, and the M5 threaded hole 215 on the lock shell 21 is hidden in the lock body and cannot be damaged, so that the rest lock cylinder is still fixed in the lock body and cannot be pulled out; meanwhile, after the lock shell is warped at the position of the easy-breaking groove 212, the groove 221 of the thumb wheel is also clamped on the boss 213 of the lock shell, and the thumb wheel is arranged in the lock body, so that the thumb wheel 22 cannot be pulled out, and the unlocking safety is improved. When the thumb wheel cannot rotate, because the thumb wheel head 222 of the thumb wheel has a certain angle (usually 30 degrees) with the key cylinder, the thumb wheel head 222 can also block the thumb wheel 22 from being pulled out, and the safety is further improved.

The part of the outer transmission main shaft 32 is arranged in the outer transmission parent body 33, the outer transmission parent body 33 is sleeved inside the outer lock cylinder 31, the outer transmission parent body 33 is linked with the outer lock cylinder 31 through an outer transmission blocking pin, the outer transmission main shaft 32 also penetrates through the inner part of the pull-proof thumb wheel 22 and is sleeved with an inner transmission piece 41, the inner transmission piece 41 is also arranged in the pull-proof thumb wheel 22, and the main shaft 32 penetrates through the inner transmission piece 41 to the anti-rotation core 43 and the thumb wheel core 42.

In order to prevent a thief from entering the lock cylinder through a center hole of the thumb wheel, the invention is further designed with an annular internal resistance block 24, the internal resistance block 24 is arranged on one side (close to the inner side of the door) of the internal transmission part 41 and sleeved on the main shaft 32, a gap of the internal resistance block 24 is reserved in the thumb wheel core 42, and a space is arranged below the gap and away from the internal resistance block 24 to provide a space for the internal resistance block 24 to fall down after the external lock cylinder group falls off. When the lock shell is warped and broken at the position of the easy-breaking groove 212, the outer lock cylinder part 31, the outer transmission part main shaft 32, the outer transmission part parent body 33, the outer transmission part spring 34 and the outer transmission part blocking pin all fall off, and because a section of gap is arranged below the inner resistance block 24, the height of the gap is about one quarter to one half of the height of the blocking block, at the moment, the inner resistance block 24 falls down to block the inner transmission part 41 from moving inwards; meanwhile, the inner blocking 24 blocks also block the needle, the iron wire and the drill bit for the thief from entering through the center hole of the shifting wheel, so that the anti-rotation core 43 is prevented from being pushed inwards, and the anti-theft safety effect is improved.

The inner lock cylinder group mainly comprises a dial wheel core 42, an anti-rotation core 43 and a lock cylinder unlocking core 45, wherein an inner transmission piece 41 and an inner resistance block 24 are sleeved at the first end of the dial wheel core 42, a strip-shaped hollow groove is formed in the second end of the dial wheel core 42 to be matched and connected with a strip-shaped projection 433 at the first end of the anti-rotation core 43, the second end of the anti-rotation core 43 is a circular groove, the first end of the lock cylinder unlocking core 45 is columnar and can be sleeved in the circular groove at the second end of the anti-rotation core 43, the unlocking core and the lock cylinder unlocking core are linked through an unlocking pin shaft 51 and rotate together with the dial wheel core 42, a concave structure 451 is formed in a columnar body at the first end of the lock cylinder unlocking core 45, and two sections of annular cams protruding out of the surface. The unlocking pin shaft 51 is fixed in the anti-rotation core 43 and extends into the concave structure 451, and the moving track of the unlocking pin shaft is limited within the range of the concave structure 451 in the locking and unlocking process, so that the anti-rotation core 43 can move back and forth and further can be separated from the first bayonet 27, wherein the horizontal width of the concave structure is larger than that of the bayonet 431, so that the first bayonet 27 can be removed from the bayonet 431.

The side of preventing changeing the first end of core 43 has draw-in groove 431, and bayonet lock 27 card is gone into in preventing changeing the draw-in groove 431 of core 43, when knob 46 in the door is rotatory, drive unblock core 45 rotatory, drive and prevent changeing the inside and outside parallel movement of core 43, prevent changeing core 43 after a distance of inward shift, no longer block in prevent changeing in the draw-in groove 431 of core 43, realize preventing changeing core 43 free rotation, and then drive thumb wheel core 42 and rotate, thumb wheel core 42 rotates and can drive and prevent pulling thumb wheel 22 and rotate to open the lock body. The second pin 28 is clamped between the two ring cams to fix the knob 46 and the unlocking core 45. In addition, in the unlocking process, the first bayonet pin 27 can be separated from the clamping groove 431 of the anti-rotation core 43, the inner core spring 44 is arranged in the unlocking core 45, the inner core spring 44 is in a compression state in the unlocking process, and after the lock shell 21 is warped, the inner core spring 44 pushes the anti-rotation core 43 to reset under the action of elastic force, so that the first bayonet pin 27 enters the clamping groove 431 of the anti-rotation core 43, the anti-rotation core 43 cannot rotate, the door cannot be unlocked, and the self-locking function is realized.

Referring to fig. 5 to 8, fig. 5 is a schematic diagram of a door being locked in an initial state, fig. 6 is a schematic diagram of unlocking from outside of the door, it can be seen from fig. 6 that, when the door is unlocked from outside, the first bayonet 27 is moved out of the bayonet groove 431, when the lock case is warped at the breakable groove 212, as shown in fig. 7, the internal resistance block 24 falls, the first bayonet 27 is reset and continuously clamped in the bayonet groove 431, so that the door cannot be unlocked, but the door can be unlocked, as shown in fig. 8, the knob 46 is rotated, the unlocking core 45 moves inwards through the unlocking pin 51 until the bayonet groove 431 of the anti-rotation core is separated from the first bayonet 27, so that the anti-rotation core can rotate without obstacle, and the door is unlocked.

Another embodiment of the present invention further provides a safety lock, which includes the lock cylinder in the foregoing embodiments, and further includes accessories such as a lock tongue, a marble, a key, etc. which are matched with the lock cylinder, and details are not repeated herein.

The lock core and the safety lock disclosed by the embodiment of the invention have the advantages of good anti-poking performance and high safety.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. A safety lock cylinder comprises an outer lock cylinder group, an inner lock cylinder group, a lock shell and an anti-pulling shifting wheel, and is characterized in that a wide groove for accommodating the anti-pulling shifting wheel is formed in the lock shell, a long and thin easy-to-break groove is further formed in the end face of the wide groove close to one side of the outer lock cylinder group, a groove is formed in the outer ring of the shifting wheel, and a boss extending into the groove is correspondingly formed in the lock shell to limit the shifting wheel to be pulled out.

2. The safety lock core according to claim 1, characterized in that the outer lock core group comprises a main shaft, the inner lock core group comprises a thumb wheel core, an anti-rotation core and an unlocking core, the main shaft of the outer lock core group extends into the inner lock core group, an inner transmission part and an inner blocking block are further sleeved on the main shaft, a gap for accommodating the inner blocking block is reserved in the thumb wheel core, and a space is arranged below the gap and is far away from the inner blocking block so as to provide a space for the inner blocking block to fall down after the outer lock core group falls off.

3. The safety lock core according to claim 2, wherein the first end of the anti-rotation core is inserted into the interior of the thumb wheel core and connected with the interior of the thumb wheel core, the first end of the unlocking core is inserted into the second end of the anti-rotation core and is linked through an unlocking pin shaft, the unlocking core is provided with a recessed structure, and one side of the recessed structure is an annular cam.

4. The safety lock core according to claim 3, wherein the first end of the anti-rotation core has a slot, when the lock is not unlocked, a first click pin is clamped into the slot of the anti-rotation core, when the knob in the door is rotated, the unlocking core is rotated to drive the anti-rotation core to move in and out in parallel, after the anti-rotation core moves a distance inwards, the first click pin is not clamped into the slot of the anti-rotation core, so that the anti-rotation core rotates freely, and the dial wheel core is driven to rotate.

5. The safety lock core according to claim 1, characterized in that the width of the wide groove is 16-28 mm.

6. The safety lock core according to claim 2, wherein the outer lock core group further comprises an outer lock core, an outer transmission member parent body and an outer transmission member parent body spring, the outer transmission member main shaft is arranged in the outer transmission member parent body, the outer transmission member parent body is sleeved inside the outer lock core, and the outer transmission member parent body is linked with the outer lock core through an outer transmission member blocking pin.

7. The security lock core of claim 3 wherein the unlatching pin extends into the recessed structure and acts along an inner wall surface of the recessed structure.

8. The safety lock core according to claim 1, wherein the anti-pulling dial wheel is hollow, the first end of the anti-pulling dial wheel is fixedly connected with an outer lock core, and the dial wheel core, the inner transmission member and the internal resistance block are all positioned in the anti-pulling dial wheel.

9. The security lock core of claim 1, wherein the groove bottom of the breakable groove has a height difference from the bottom surface of the upper anti-pulling wheel overlapping the wide groove.

10. A security lock, wherein the security lock has a security cylinder as claimed in any one of claims 1 to 9.