CN108756463B

CN108756463B - Door lock with cat eye unlocking prevention and left-right reversing functions

Info

Publication number: CN108756463B
Application number: CN201810540723.9A
Authority: CN
Inventors: 卢炳森; 吴国富; 黎宇
Original assignee: Guangdong Hutlon Technology Co Ltd
Current assignee: Guangdong Hutlon Technology Co Ltd
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2023-07-14
Anticipated expiration: 2038-05-30
Also published as: CN108756463A

Abstract

The invention relates to the field of door locks, in particular to a door lock with cat eye unlocking prevention and left-right reversing functions, wherein an inner door lock comprises: the panel, the handle and the unlocking prevention clutch mechanism; the handle consists of a rotating shaft section and a holding section; a hollow cavity is formed in the holding section, and the unlocking prevention clutch mechanism is arranged in the hollow cavity; the unlocking prevention clutch mechanism comprises: a button, a compression spring and a shaft member; the pressing end, the compression spring and the insertion tube slide in the hollow cavity of the holding section; the button is pressed, and the annular pins arranged at the pressing end of the button are inserted into or separated from the slots arranged on the inserting tube, so that the holding section and the rotating shaft piece can synchronously rotate or separate; the door lock handle has the function of preventing the peep hole from unlocking, and the handle is lifted to realize back locking, so that the safety and the practicability of the door lock are improved.

Description

Door lock with cat eye unlocking prevention and left-right reversing functions

Technical Field

The invention relates to the field of door locks, in particular to a door lock with cat eye unlocking prevention and left-right reversing functions.

Background

The prior entrance door is convenient for observing visitors, and a cat eye is arranged on the door plate. In recent years, cases of theft in which lawbreakers are unlocked through cat eyes are increasing year by year. Firstly, the cat eye unlocking tool is simple to manufacture, can be self-made and can be easily purchased from the internet; secondly, the cat eye unlocking technology is simple and easy to learn, the cat eye tool can be unlocked only by being extended into the door after the cat eye is damaged, the time consumption is short, and the unlocking can be completed in ten seconds at the fastest time.

The lawless persons use special cat eye tools similar to a mechanical arm to open the cat eye and extend into the room to press down the handle to unlock the lock. However, when buying the burglary-resisting door, most users only pay attention to how thick, firm, how many lock points are, the level and the safety of the lockset, but neglect a cat eye which is one of the weakest links of the door.

Therefore, developing a door lock with excellent cat eye unlocking prevention function is a technical problem to be solved in industry.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a door lock with the functions of preventing a peep hole from unlocking and reversing left and right.

To achieve the purpose, the invention adopts the following technical scheme:

a door lock with prevent cat eye unblank and control switching-over function, the door lock includes outer lock and interior lock, interior lock includes: the panel, the handle and the unlocking prevention clutch mechanism; the panel is provided with a mounting hole; the handle consists of a rotating shaft section and a holding section; a hollow cavity is formed in the holding section, and the unlocking prevention clutch mechanism is arranged in the hollow cavity; the unlocking prevention clutch mechanism comprises: a button, a compression spring and a shaft member; one end of the button is a pressing end, and the other end of the button is a pressing end; the pressing end is provided with a pin; the rotating shaft piece comprises an inserting pipe and a driving skirt; the end part of the inserting tube is provided with a slot which is fixed with the pin in an inserting way; the driving skirt edge is provided with a swing contact for driving the lock tongue; one end of the compression spring props against the pressing end, and the other end of the compression spring props against the insertion tube; the pressing end, the compression spring and the insertion tube slide in the hollow cavity of the holding section; the push button is pressed, and the annular pins arranged at the pressing end of the push button are inserted into or separated from the slots arranged on the inserting tube, so that the holding section and the rotating shaft piece can synchronously rotate or separate.

More preferably, the inner door lock is also provided with a reset torsion spring, a clamping ring and a reset ring; one reset end limit of the reset torsion spring is positioned on the panel, and the other reset end limit of the reset torsion spring is positioned on a convex rib arranged on the clamping ring; the clamping ring and the middle part of the reset ring are respectively provided with a through hole, the clamping ring and the reset ring are respectively fixed on two sides of the driving skirt edge of the rotating shaft piece, and the through holes are sleeved with the outer part of the rotating shaft.

More preferably, the clamping ring and the reset ring are fixedly connected through screws arranged on two sides; clamping rings are arranged on two sides of the reset ring, and are provided with openings; the two clamping rings limit the reset ring to the end part of one end of the rotating shaft piece, and the reset ring is not attached to the driving skirt; the inner diameter of the clamping ring is 0-1.0mm smaller than the outer diameter of the rotating shaft piece.

More preferably, the panel is provided with an anti-collision block and a positioning block; the anti-collision block is detachably arranged close to the clamping ring; an arc concave part is arranged on one side of the anti-collision block, which is close to the periphery of the clamping ring; opposite sides of the panel are opposite to each other and are provided with a reversing hole respectively; the positioning block is detachably fixed to any one reversing hole, and is positioned between the two limiting ends of the reset torsion spring.

More preferably, the handle is provided with a decorative cover.

More preferably, the handle body is L-shaped and consists of a rotating shaft section and a holding section; the rotating shaft section and the holding section are internally provided with hollow cavities, and the two hollow cavities are communicated; an opening is formed in one side face of the holding section and is communicated with a hollow cavity formed in the holding section; the bottom surface of the decorative cover and the inside of the holding section are fixed through a clamping mechanism, and the decorative cover is covered on the opening and completely seals the opening.

More preferably, the engagement mechanism includes: the clamping ear and the clamping seat; the middle part of each clamping lug is provided with at least two clamping holes, two clamping lugs form a group, and the two clamping lugs are respectively opposite to the edges at the two sides of the bottom of the decorative cover and extend out from the bottom surface of the decorative cover; the clamping seat comprises a seat body and a clamping end; two ends of the seat body are respectively provided with one clamping end; the number of the clamping seats is equal to the number of the groups of the clamping seats; the base is fixed on the inner wall of the hollow cavity of the holding section, which is opposite to the opening, the decorative cover is covered with the opening to drive the clamping lugs to be inserted into the hollow cavity of the holding section, and each group of clamping lugs is exactly clamped and fixed with the two clamping ends of the clamping base.

More preferably, a screw hole is formed in the middle of the seat body; the inner wall of the middle cavity of the holding section, which is opposite to the opening, is provided with a screw hole; the seat body is detachably fixed with the inner part of the middle cavity of the holding section through a screw hole.

More preferably, a plastic gasket is arranged between the holding section and the front end surface of the panel.

More preferably, a plastic gasket is arranged between the collar and the rear end face of the panel, the outer diameter size of the plastic gasket is smaller than the inner diameter size of the reset torsion spring, and the thickness of the plastic gasket is larger than the thickness of the reset torsion spring.

In actual use, when the button is sprung, the button is separated from the inserting pipe of the rotating shaft piece under the left and right elasticity of the compression spring, the handle and the rotating shaft piece are in a separated state, the inserting pipe of the rotating shaft piece can not rotate along with the handle when the handle is pressed down to rotate, and the handle idles and can not be unlocked, so that the effect of preventing the peephole from unlocking is achieved. When a finger presses the button from the front of the handle, the lower end of the button compresses the spring and is inserted and fixed with the insertion tube of the rotating shaft piece into a whole; the rotating shaft piece rotates along with the handle, and the swing contact of the driving skirt edge drives the lock tongue in the lock body to realize door opening; in addition, when the handle is lifted, the handle drives the rotating shaft piece to further drive the swinging contact to drive the lock tongue to realize door lock back locking; the door lock handle has the function of preventing the peep hole from unlocking, and the handle is lifted to realize back locking, so that the safety and the practicability of the door lock are improved.

Drawings

FIG. 1 is a schematic diagram of an exploded construction of one embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of one embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure of an embodiment of the present invention.

Wherein: the panel 100, the mounting hole 110, the handle 200, the rotating shaft section 210, the holding section 220, the button 310, the compression spring 320, the rotating shaft member 330, the insertion tube 331, the driving skirt 332, the reset torsion spring 340, the collar 350, the reset ring 360, the snap ring 370, the crashproof block 380, the circular arc recess 381, the positioning block 390, the reversing hole 391, the decoration cover 400, and the plastic gasket 410.

Detailed Description

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-3, a door lock with cat eye unlocking prevention and left-right reversing functions, the door lock comprises an outer door lock and an inner door lock, and the inner door lock comprises: panel 100, handle 200, and anti-unlock clutch mechanism; the panel 100 is provided with a mounting hole 110; the handle 200 is composed of a rotating shaft section 210 and a holding section 220; a hollow cavity is arranged in the holding section 220, and the unlocking prevention clutch mechanism is arranged in the hollow cavity; the unlocking prevention clutch mechanism comprises: a button 310, a compression spring 320, and a shaft member 330; one end of the button 310 is a pressing end, and the other end of the button 310 is a pressing end; the pressing end is provided with a pin; the rotating shaft 330 includes an insertion tube 331 and a driving skirt 332; the end of the plugging tube 331 is provided with a slot which is plugged and fixed with the pin; the driving skirt edge 332 is provided with a swinging contact for driving the lock tongue; one end of the compression spring 320 abuts against the pressing end, and the other end of the compression spring 320 abuts against the insertion tube 331; the pressing end, the compression spring 320 and the insertion tube 331 slide in the hollow cavity of the grip section 220; the button 310 is pressed, and the annular pins at the pressing end of the button 310 are inserted into or separated from the slots of the insertion tube 331, so that the holding section 220 and the rotating shaft 330 can rotate or separate synchronously.

The clamping ring 350 and the reset ring 360 are fixedly connected through screws arranged on two sides; snap rings 370 are arranged on two sides of the reset ring 360, and openings are formed in the snap rings 370; two snap rings 370 limit the reset ring 360 to the end of one end of the rotating shaft 330, and the reset ring 360 is not attached to the driving skirt 332; the inner diameter of the snap ring 370 is 0-1.0mm smaller than the outer diameter of the shaft member 330. The snap ring 370 can be fixed on the outer wall of the insertion tube 331 by using the self-contraction elastic force, so as to limit the position of the reset ring 360; and because the snap ring 370 is convenient to detach and install, the assembly and the disassembly of the reset ring 360 are more convenient and faster.

The panel 100 is provided with an anti-collision block 380 and a positioning block 390; the crash block 380 is removably disposed adjacent to the collar 350; an arc recess 381 is formed on a side of the anti-collision block 380 near the periphery of the collar 350; opposite sides of the panel 100 are opposite to each other and are provided with a reversing hole 391; the positioning block 390 is detachably fixed to any one of the reversing holes 391, and the positioning block 390 is located between the two limiting ends of the reset torsion spring 340. When the handle 200 is reversed left and right, the positioning block 390 and the anti-collision block 380 are taken out from the panel 100, and then the handle 200 is rotated 180 ° to the opposite side, the rotating shaft assembly is removed and rotated 180 ° to be fixed by screws; at this time, the reset torsion spring 340 originally limited on the positioning block 390 and the collar 350 can rotate synchronously with the handle 200, two reset ends of the reset torsion spring 340 clamp the convex rib of the collar 350 to enable the collar 350 and the rotating shaft 330 to rotate synchronously, then the anti-collision block 380 is installed, and meanwhile, the positioning block 390 is installed on the reversing hole 391 on the other side opposite to the original position, at this time, the positioning block 390 is located between the two reset ends of the reset torsion spring 340, and the reset torsion spring 340 can only rotate within a certain range; the rotating shaft piece after left and right direction change can normally drive the lock tongue of the door lock to unlock after the handle 200 drives to rotate a certain angle, and the handle can reset the rotating shaft component under the action of the spring after the door opening action is completed.

The handle 200 is provided with a decorative cover 400. Making the appearance of the handle 200 more elegant

The handle 200 body is L-shaped and consists of a rotating shaft section 210 and a holding section 220; the shaft section 210 and the holding section 220 are provided with hollow cavities inside, and the two hollow cavities are communicated; an opening is formed on one side surface of the holding section 220, and the opening is communicated with a hollow cavity formed in the holding section 220; the bottom surface of the decorative cover 400 and the inside of the holding section 220 are fixed by a clamping mechanism, and the decorative cover 400 covers the opening and completely seals the opening. The handle 200 is different from the common handle 200, the common handle 200 is internally hollowed out for weight reduction, and besides the weight reduction, the door lock handle 200 is internally hollowed out, and simultaneously, the interiors of the rotating shaft section 210 and the holding section 220 of the handle 200 are hollowed out, so that the hollow cavities in the rotating shaft section 210 and the holding section 220 are communicated; the rotating shaft section 210 of the handle 200 is further communicated with the hollow cavity inside the door lock correspondingly installed, so that the lock body structure arranged in the hollow cavity inside the door lock is in hidden connection with the control structure arranged in the hollow cavity inside the handle 200 through the hollow cavity inside the handle 200. In addition, the decorative cover 400 is fixed to the opening of the holding section 220 of the handle 200 by a locking mechanism, the decorative cover 400 is not provided with a screw hole or any other structure which can be exposed to the outside, and the locking mechanism is also completely arranged at the bottom of the decorative cover 400, namely, in the hollow cavity of the holding section 220 of the handle 200; so that the decorative cover 400 can be stably mounted on the handle 200 while the aesthetic appearance and the integrity of the handle 200 are greatly improved, and the service life is longer.

The engagement mechanism includes: the clamping ear and the clamping seat; the middle part of each clamping lug is provided with at least two clamping holes, two clamping lugs form a group, and the two clamping lugs are respectively opposite to the edges at the two sides of the bottom of the decorative cover 400 and extend out from the bottom surface of the decorative cover 400; the clamping seat comprises a seat body and a clamping end; two ends of the seat body are respectively provided with one clamping end; the number of the clamping seats is equal to the number of the groups of the clamping seats; the base is fixed on the inner wall of the hollow cavity of the holding section 220, which is opposite to the opening, the decorative cover 400 covers the opening, and drives the clamping lugs to be inserted into the hollow cavity of the holding section 220, and each group of clamping lugs is engaged with the two engaging ends of the clamping base. The clamping mechanism comprises clamping lugs and clamping seats, the clamping lugs are arranged on the bottom surface of the decorative cover 400 in the production and assembly process, the clamping seats are fixed on the inner wall of the hollow cavity of the holding section 220, the decorative cover 400 is covered with the opening, the clamping lugs are clamped with the clamping seats, the clamping lugs and the clamping seats are arranged inside the handle 200, no structure is exposed outside the handle 200, the clamping mechanism can be prevented from being exposed and damaged, the service life is longer, the handle 200 is fixed by adopting the clamping mechanism to the decorative cover 400, the clamping mechanism can not receive the influence of the use rotation or external environment of the handle 200, and the decorative cover 400 can be stably covered with the opening of the handle 200 for a long time.

The middle part of the seat body is provided with a screw hole; the inner wall of the middle cavity of the holding section 220, which is opposite to the opening, is provided with a screw hole; the seat is detachably fixed to the inside of the middle cavity of the grip section 220 through a screw hole. The structure of the clamping seat is complex, and the holding section 220 and the clamping seat cannot be integrally formed, so that the clamping seat can be produced in batch independently, and then the clamping seat and the holding section are quickly installed and fixed by adopting screws; in addition, the decorative cover 400 and the holding section are fixed by adopting a clamping mechanism, the decorative cover 400 is difficult to disassemble, and the clamping end must be damaged by external force to disassemble the decorative cover 400; when the clamping end is damaged, the screw is unscrewed, so that the clamping seat can be quickly replaced, and the replacement or installation of a follow-up cover plate is facilitated.

A plastic gasket 410 is provided between the grip section 220 and the front face of the panel 100. Because there is frequent relative rotation between the panel 100 and the handle 200, friction between the handle 200 and the panel 100, which are both made of rigid materials, generates noise during rotation, and even causes damage to each other to different extents; the plastic gasket 410 is arranged at the corresponding position, so that noise can be well reduced, and direct friction between parts can be avoided; the door lock is better in use comfort and longer in service life.

A plastic washer 410 is disposed between the collar 350 and the rear end surface of the panel 100, and the plastic washer 410 has an outer diameter smaller than an inner diameter of the return torsion spring 340, and the plastic washer 410 has a thickness larger than that of the return torsion spring 340. If the plastic washer 410 is not provided, the clearance between the collar 350 and the rear end surface of the panel 100 can clamp or loosen the reset torsion spring 340 in an over-blocking manner, so that the reset torsion spring 340 does not rotate smoothly or is easy to shift; after the plastic gasket 410 is disposed, the plastic gasket 410 can be completely tightened by the collar 350 and the rear end surface of the panel 100, and at this time, the collar 350 can also smoothly rotate, and the reset torsion spring 340 will not be jammed or displaced.

In actual use, when the button 310 is sprung, the button 310 is separated from the insertion tube 331 of the rotating shaft member 330 under the left and right elasticity of the compression spring 320, the handle 200 is in a separated state from the rotating shaft member 330, the insertion tube 331 of the rotating shaft member 330 cannot rotate along with the handle 200 when the handle 200 is pressed down to rotate, and the handle 200 cannot idle to unlock, so that the function of preventing the cat eye from unlocking is achieved. When a finger presses the button 310 from the front of the handle 200, the lower end of the button 310 compresses the spring 320 and is integrally inserted and fixed with the insertion tube 331 of the rotating shaft 330; the rotating shaft member 330 rotates along with the handle 200, and the swing contact of the driving skirt 332 drives the lock tongue in the lock body to realize door opening; in addition, when the handle 200 is lifted, the handle 200 drives the rotating shaft piece 330 to further drive the swinging contact to drive the lock tongue to realize door lock back locking; the door lock handle has the function of preventing the peep hole from unlocking, and the handle 200 is lifted to realize back locking, so that the safety and the practicability of the door lock are improved.

The inner door lock is also provided with a reset torsion spring 340, a clamping ring 350 and a reset ring 360; one reset end limit of the reset torsion spring 340 is positioned on the panel 100, and the other reset end limit is positioned on a convex rib arranged on the clamping ring 350; the collar 350 and the middle part of the reset ring 360 are respectively provided with a through hole, the collar 350 and the reset ring 360 are respectively fixed on two sides of the driving skirt 332 of the rotating shaft element 330, and the through holes are sleeved with the outer part of the rotating shaft. The reset torsion spring 340 provides a reset spring force to the handle 200, so that the handle 200 can be reset to a predetermined position after each operation; the collar 350 provides a limiting structure for the return torsion spring 340 on one hand, and on the other hand, by controlling the fixing and separating of the handle 200, the collar 350 and the return ring 360, the handle 200 can be quickly reversed from side to side.

The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims

1. Door lock with prevent cat eye unblanking and control switching-over function, the door lock includes outer lock and interior lock, its characterized in that, interior lock includes: the panel, the handle and the unlocking prevention clutch mechanism;

the panel is provided with a mounting hole; the handle consists of a rotating shaft section and a holding section; a hollow cavity is formed in the holding section, and the unlocking prevention clutch mechanism is arranged in the hollow cavity; the unlocking prevention clutch mechanism comprises: a button, a compression spring and a shaft member; one end of the button is a pressing end, and the other end of the button is a pressing end; the pressing end is provided with a pin; the rotating shaft piece comprises an inserting pipe and a driving skirt; the end part of the inserting tube is provided with a slot which is fixed with the pin in an inserting way; the driving skirt edge is provided with a swing contact for driving the lock tongue; one end of the compression spring props against the pressing end, and the other end of the compression spring props against the insertion tube; the pressing end, the compression spring and the insertion tube slide in the hollow cavity of the holding section; the button is pressed, and the annular pins arranged at the pressing end of the button are inserted into or separated from the slots arranged on the inserting tube, so that the holding section and the rotating shaft piece can synchronously rotate or separate;

the inner door lock is also provided with a reset torsion spring, a clamping ring and a reset ring; one reset end limit of the reset torsion spring is positioned on the panel, and the other reset end limit of the reset torsion spring is positioned on a convex rib arranged on the clamping ring; the middle parts of the clamping ring and the reset ring are respectively provided with a through hole, the clamping ring and the reset ring are respectively fixed on two sides of the driving skirt edge of the rotating shaft piece, and the through holes are sleeved outside the rotating shaft;

the clamping ring and the reset ring are fixedly connected through screws arranged on two sides; clamping rings are arranged on two sides of the reset ring, and are provided with openings; the two clamping rings limit the reset ring to the end part of one end of the rotating shaft piece, and the reset ring is not attached to the driving skirt; the inner diameter of the clamping ring is 0-1.0mm smaller than the outer diameter of the rotating shaft piece;

the panel is provided with an anti-collision block and a positioning block; the anti-collision block is detachably arranged close to the clamping ring; an arc concave part is arranged on one side of the anti-collision block, which is close to the periphery of the clamping ring; opposite sides of the panel are opposite to each other and are provided with a reversing hole respectively; the positioning block is detachably fixed to any one reversing hole, and is positioned between the two limiting ends of the reset torsion spring.

2. The door lock with the functions of preventing the peep hole from unlocking and reversing left and right according to claim 1, wherein the handle is provided with a decorative cover.

3. The door lock with the functions of preventing the peep hole from unlocking and reversing left and right according to claim 2, wherein the handle body is L-shaped and consists of a rotating shaft section and a holding section; the rotating shaft section and the holding section are internally provided with hollow cavities, and the two hollow cavities are communicated; an opening is formed in one side face of the holding section and is communicated with a hollow cavity formed in the holding section; the bottom surface of the decorative cover and the inside of the holding section are fixed through a clamping mechanism, and the decorative cover is covered on the opening and completely seals the opening.

4. A door lock with anti-cat eye unlocking and left-right reversing functions according to claim 3, wherein the engaging mechanism comprises: the clamping ear and the clamping seat; the middle part of each clamping lug is provided with at least two clamping holes, two clamping lugs form a group, and the two clamping lugs are respectively opposite to the edges at the two sides of the bottom of the decorative cover and extend out from the bottom surface of the decorative cover; the clamping seat comprises a seat body and a clamping end; two ends of the seat body are respectively provided with one clamping end; the number of the clamping seats is equal to the number of the groups of the clamping seats; the base is fixed on the inner wall of the hollow cavity of the holding section, which is opposite to the opening, the decorative cover is covered with the opening to drive the clamping lugs to be inserted into the hollow cavity of the holding section, and each group of clamping lugs is exactly clamped and fixed with the two clamping ends of the clamping base.

5. The door lock with the functions of preventing a cat eye from unlocking and reversing left and right according to claim 4, wherein a screw hole is formed in the middle of the seat body; the inner wall of the middle cavity of the holding section, which is opposite to the opening, is provided with a screw hole; the seat body is detachably fixed with the inner part of the middle cavity of the holding section through a screw hole.

6. The door lock with the functions of preventing the peep hole from unlocking and reversing left and right according to claim 1, wherein a plastic gasket is arranged between the holding section and the front end surface of the panel.

7. The door lock with the functions of preventing the peep hole from unlocking and reversing left and right according to claim 1, wherein a plastic gasket is arranged between the clamping ring and the rear end face of the panel, the outer diameter size of the plastic gasket is smaller than the inner diameter size of the reset torsion spring, and the thickness of the plastic gasket is larger than the thickness of the reset torsion spring.