CN218843975U - Switching structure for preventing cat eye from unlocking and door lock - Google Patents

Abstract

The utility model discloses a prevent cat eye switching structure of unblanking, include: the lock base is provided with a handle and a cat eye prevention structure, and the handle can rotate; the switching piece can switch the function of the cat eye prevention structure to be opened or closed through the movement of the switching piece between a first position and a second position; the switching piece is provided with a first movement limiting part; the elastic movement limiting piece is provided with a second movement limiting part; the switching piece can be operated to switch from a first position to a second position, and when the switching piece is positioned at the second position, the second movement limiting part is matched with the first movement limiting part to prevent the switching piece from moving to the first position; the unlocking piece can be driven by the rotation of the handle to move, and can be abutted against the elastic movement limiting piece during movement so that the elastic movement limiting piece is deformed to remove the matching of the second movement limiting part and the first movement limiting part; first elasticity resets for the drive switches the piece and moves from the second position to the first position, has effectively made things convenient for operation and use, has reduced processing and assembly requirement, and the structure is more simple reliable. The utility model also provides a lock.

Description

Switching structure for preventing cat eye from unlocking and door lock

Technical Field

The utility model relates to a tool to lock technical field, in particular to prevent cat eye switching structure and lock field of unblanking.

Background

At present, a plurality of door locks have a cat eye unlocking prevention function, and the purpose is to prevent a thief from extending a theft tool into a door through a hole of the cat eye and rotating a rear handle to unlock the door. Prevent that cat eye unblanks generally has two big types of implementation, and one kind is through preventing cat eye structure with the handle locking for the handle can not rotate, thereby prevents to rotate the handle and unblanks, and another kind is through separation and reunion structure etc. make can not drive the square bar rotation of connecting the lock core when rotating the handle, so even if rotate the handle also can not unblock the lock.

Because the user also need utilize the handle to open the lock when going out, consequently prevent that the cat eye structure needs set up to changeable opening and close, at present most lock its function of preventing the cat eye structure is opened and close and all needs the manual dial button etc. of stirring of user to switch, and the operation is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a simple structure reliable, convenient operation and use prevent that cat eye unblanks switching structure and lock.

In order to achieve the above purpose, the utility model provides a technical scheme is:

a switching structure for preventing a cat eye from unlocking, comprising:

the lock comprises a lock base, a lock handle and a cat eye prevention structure matched with the lock handle, wherein the lock base is provided with the handle which can rotate;

the switching piece is movably arranged on the lock seat and can switch the opening and closing of the function of the cat eye prevention structure through the movement of the switching piece between a first position and a second position; the switching piece is provided with a first movement limiting part;

the elastic movement limiting piece is arranged on the lock seat, and a second movement limiting part matched with the first movement limiting part is arranged on the elastic movement limiting piece; the switching piece can be operated to switch from the first position to the second position, and when the switching piece is positioned at the second position, the second movement limiting part is matched with the first movement limiting part to prevent the switching piece from moving to the first position;

the unlocking piece is arranged on the lock seat and can be driven by the rotation of the handle to move, and when the unlocking piece moves, the unlocking piece can be abutted against the elastic movement limiting piece to enable the elastic movement limiting piece to deform to release the matching of the second movement limiting part and the first movement limiting part;

and the first elastic resetting piece is used for driving the switching piece to move from the second position to the first position after the first movement limiting part and the second movement limiting part are disengaged.

Preferably, the first movement restricting portion and the second movement restricting portion are engaged with each other in a manner of abutting against each other, and the elastic movement restricting member is elastically deformable to displace the second movement restricting portion from the first movement restricting portion.

Preferably, the switching member is movable in a moving manner, at least one first movement limiting portion is respectively disposed on two opposite sides of the switching member in the moving direction, and at least one elastic movement limiting member is respectively disposed on two sides of the lock seat corresponding to the switching member.

Preferably, the elastic movement limiting piece is a spring piece, and the spring piece bends and extends to form the second movement limiting part.

Preferably, both ends of the elastic movement limiting piece are fixed on the lock seat, and the second movement limiting part is located in the middle of the elastic movement limiting piece.

Preferably, the unlocking piece is movably arranged on the lock seat; the handle is provided with a driving disc, and the handle can be in sliding butt joint with the unlocking piece through the driving disc to drive the unlocking piece to move when rotating; the unlocking device further comprises a second elastic resetting piece, and the second elastic resetting piece is used for driving the unlocking piece to move and reset.

Preferably, the cat eye prevention structure comprises a lock groove formed in the handle, the switching piece is correspondingly provided with a lock pin, and the switching piece can move to enable the lock pin to be inserted into the lock groove to limit rotation of the handle or enable the lock pin to be moved out of the lock groove to remove limitation on the handle.

Preferably, at least one locking groove is formed in each of two opposite sides of the handle.

Preferably, prevent cat eye structure includes free piece and sets up clutch structure between handle and free piece, free piece rotatable setting is in on the lock seat and be used for connecting the lock core, the activity of switching piece can switch clutch structure's separation and reunion state.

The utility model also provides a lock, including the utility model provides a prevent cat eye switching structure that unblanks.

The utility model has the advantages that: the utility model provides a prevent cat eye switching structure that unblanks, it can prevent the function of cat eye structure to open and close to switch the piece through its activity switching, wherein, switch the piece and can be accomplished by user manual operation or through other drive structures by the activity of first position activity to second position, and switch the piece and be moved the activity of first position by the second position activity, then the rotation of accessible handle is realized, support pressure elasticity limit shift piece through the unlocking piece when specifically being the handle rotates, make elasticity limit shift piece warp and remove the cooperation of second limit shift portion and first limit shift portion, but first elasticity reset piece automatic drive switching piece moves to first position from the second position afterwards, therefore, this prevent that one of them switching step of cat eye switching structure is by the rotation drive of handle, effectively made things convenient for operation and use, and unlocking piece and elasticity limit shift piece have adopted the butt cooperation relation, processing and assembly requirement have effectively been reduced, the structure is more simple and reliable. The utility model provides a lock owing to adopted the utility model provides a prevent cat eye switching structure that unblanks, consequently has above-mentioned advantage equally.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a front structure view of a preferred embodiment of the switching structure for preventing the peep hole from unlocking in the present invention;

fig. 2 is an internal structure diagram of the preferred embodiment of the switching structure for preventing the peep hole from unlocking when the peep hole preventing function is closed;

fig. 3 is an internal structure view of the preferred embodiment of the switching structure for preventing the peep hole from unlocking when the handle rotates;

fig. 4 is the internal structure diagram of the preferred embodiment of the switching structure for preventing unlocking of the peep hole in the utility model when the function of the peep hole is started.

Wherein, in the figures, the respective reference numerals:

10. a lock seat; 11. a handle; 12. mounting grooves; 13. a chute; 14. a drive disc; 15. locking the groove; 20. a switching element; 21. a first movement limiting section; 22. a lock pin; 23. an operation section; 24. switching frames; 30. an elastic movement limiting member; 31. a second movement limiting part; 40. unlocking the lock; 51. a first elastic restoring member; 52. and a second elastic reset piece.

Detailed Description

This section will describe in detail the embodiments of the present invention, the preferred embodiments of which are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can visually and vividly understand each technical feature and the whole technical solution of the present invention, but it cannot be understood as a limitation to the scope of the present invention.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 to 4, the utility model discloses well prevent cat eye and unblank the preferred embodiment who switches the structure, include: the lock comprises a lock base 10, wherein a handle 11 and a cat eye prevention structure matched with the handle 11 are arranged on the lock base 10, and the handle 11 can rotate; the switching piece 20 can be movably arranged on the lock seat 10 and can switch the function of the cat eye prevention structure to be opened and closed through the movement of the switching piece between a first position and a second position; the switching piece 20 is provided with a first movement limiting part 21; an elastic movement limiting piece 30 arranged on the lock seat 10, wherein a second movement limiting part 31 matched with the first movement limiting part 21 is arranged on the elastic movement limiting piece 30; the switching piece 20 can be operated to switch from the first position to the second position, and when the switching piece 20 is located at the second position, the second movement limiting part 31 is matched with the first movement limiting part 21 to prevent the switching piece 20 from moving to the first position; an unlocking member 40 which is provided on the lock base 10 and is movable by the rotational drive of the handle 11, and which can abut against the elastic movement restricting member 30 when the unlocking member 40 is movable, so that the elastic movement restricting member 30 is deformed to release the engagement of the second movement restricting portion 31 with the first movement restricting portion 21; and the first elastic resetting piece 51 is used for driving the switching piece 20 to move from the second position to the first position after the first movement limiting part 21 and the second movement limiting part 31 are disengaged. The utility model provides a prevent cat eye switching structure that unblanks, switching piece 20 can be switched through its activity and prevent the function of cat eye structure and open and close, wherein, switching piece 20 can be accomplished by user manual operation or through other drive structures by the activity of first position activity to second position, and switching piece 20 is by the activity of second position activity to first position, then the rotation of accessible handle 11 is realized, support elasticity limit and move piece 30 through unlocking piece 40 when specifically being handle 11 rotates, make elasticity limit move 30 warp and remove the cooperation of second limit and move portion 31 and first limit and move portion 21, but first elasticity reset 51 automatic drive switching piece 20 second position activity to first position afterwards, therefore, this prevent that one of them switching step of cat eye switching structure is by handle 11's rotation drive, operation and use have effectively made things convenient for, and unlocking piece 40 and elasticity limit and move piece 30 have adopted the butt cooperation relation, processing and assembly requirement have effectively been reduced, and the structure is more simple.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

referring to fig. 2 to 4, in the present embodiment, the first movement limiting portion 21 and the second movement limiting portion 31 are engaged with each other in a manner of abutting against each other, and the elastic movement limiting member 30 can be elastically deformed to displace the second movement limiting portion 31 from the first movement limiting portion 21, so that the requirements for processing and assembly are further reduced, the structure is simpler and more reliable, and the failure rate can be effectively reduced. In other embodiments, the first movement limiting portion 21 and the second movement limiting portion 31 may be engaged with each other by inserting the slot and the pin into each other, by magnetic attraction of the magnet, by hooking the hook, or by other suitable engagement methods, but not limited thereto.

In this embodiment, the movement of the switching element 20 is a movement, and the switching element 20 is provided with at least one first movement limiting portion 21 on two opposite sides of the movement direction of the switching element, and the two sides of the lock seat 10 corresponding to the switching element 20 are provided with at least one elastic movement limiting portion 30, so that the assembly of the switching element 20 is facilitated, and the switching element is more reliable, and the arrangement of the first movement limiting portions 21 can effectively improve the uniformity of the stress of the switching element 20, so that the movement of the switching element 20 is more stable, and the malfunction is not easily caused. In other embodiments, the movement manner of the switching member 20 may also adopt other suitable movement manners such as rotation, swing, etc., and the number and distribution of the first movement limiting portions 21 may also be flexibly adjusted according to the need, but are not limited thereto.

In this embodiment, the elastic movement limiting member 30 is a spring plate, and the spring plate is bent and extended to form the second movement limiting portion 31, thereby further facilitating the processing, manufacturing and assembling. In other embodiments, the elastic movement limiter 30 may be selected from other suitable elastic structures such as a spring and a torsion spring, and the second movement limiter 31 may be another suitable structure such as a movement limiting block separately connected to the elastic movement limiter 30, and is not limited thereto.

In this embodiment, both ends of the elastic movement limiting member 30 are fixed on the lock seat 10, and the second movement limiting portion 31 is located in the middle of the elastic movement limiting member 30, so that the elastic movement limiting member 30 can be firmly fixed, and the movement of the second movement limiting portion 31 is more stable and reliable. In other embodiments, only one end of the elastic movement-restricting member 30 may be fixed to the lock base 10, and the second movement-restricting portion 31 may be disposed at another suitable position of the elastic movement-restricting member 30, which is not limited to this.

In this embodiment, the elastic movement limiting member 30 is in a shape of a "convex" without a bottom edge, a smaller protrusion of the head portion is in an arc surface shape and serves as the second movement limiting portion 31, both sides of the second movement limiting portion 31 are inclined sides, which is helpful for improving the elastic force, the unlocking member 40 deforms the elastic movement limiting member 30 by abutting against the inclined sides in a sliding manner, so that the unlocking member 40 pushes the elastic movement limiting member 30 to insert both sides of the elastic movement limiting member 30 into the two mounting grooves 12 of the lock base 10, respectively, thereby facilitating the assembly.

In this embodiment, two sides of the switching member 20 are respectively provided with a "convex" switching frame 24 without a bottom edge, which is convenient for processing and manufacturing, and the convex position thereof is used as the first movement limiting portion 21 and also adopts an arc structure, so that the occurrence of a locking fault can be effectively avoided. In other embodiments, the switching member 20 may have other suitable shapes and structures, and the first movement limiting portion 21 may have any suitable structure such as a projection integrally formed on the switching member 20 or a boss separately attached to the switching member 20, but is not limited thereto. In addition, in this embodiment, the lock base 10 is provided with the sliding groove 13 adapted to the switching member 20, and the switching member 20 is slidably disposed in the sliding groove 13, so that the switching member 20 can be well guided, and the switching member 20 is effectively prevented from deflecting to cause a failure.

In this embodiment, the unlocking member 40 is movably disposed on the lock holder 10; the handle 11 is provided with the driving disc 14, and the unlocking piece 40 can be driven to move by the sliding and abutting of the driving disc 14 and the unlocking piece 40 when the handle 11 rotates; the unlocking device also comprises a second elastic resetting piece 52, and the second elastic resetting piece 52 is used for driving the unlocking piece 40 to move and reset, so that the processing, manufacturing and assembling of the unlocking piece 40 are convenient and reliable. In other embodiments, the unlocking piece 40 may also be moved in other suitable manners such as rotating and swinging, and the unlocking piece 40 may also be moved back by rotating the handle 11 without setting the second elastic restoring piece 52 to drive the unlocking piece to return, but by keeping the linkage with the handle 11 through a suitable transmission mechanism such as a link mechanism and a rack-and-pinion mechanism, and the like.

In this embodiment, prevent cat eye structure is including setting up keyway 15 on handle 11, and the corresponding lockpin 22 that is provided with on switching piece 20, and switching piece 20 can move about to make lockpin 22 insert in keyway 15 with the rotation of restriction handle 11 or make lockpin 22 shift out in order to remove the restriction to handle 11 from keyway 15, also prevents other people through rotating handle 11 and unblock the lock through locking handle 11, and simple structure is reliable, makes things convenient for processing and manufacturing.

In this embodiment, be provided with an at least locked groove 15 respectively in its relative both sides on the handle 11, so conveniently adapt to the lock of the changeable handle 11 orientation, application scope is wider.

In some embodiments, prevent cat eye structure also can include free piece and the separation and reunion structure of setting between handle 11 and free piece, free piece is rotatable to be set up on lock seat 10 and is used for connecting the lock core, the separation and reunion state of separation and reunion structure can be switched in the activity of switching piece 20, make handle 11 and free piece be in the disengagement state when preventing that cat eye structure function opens also, make handle 11 rotatable nevertheless can't drive free piece and with the lock core action that free piece passes through the square bar and is connected, just so just can't open the lock through rotating handle 11, and when preventing that cat eye structure function closes, later pass through separation and reunion structural joint with free piece, rotate 11 locks that just can open. Clutch structure is extensive in this field application, generally adopt the structure that the clutch lever cooperation that portable setting was on one of free piece and handle 11 set up the clutch groove on another in the two, just can join free piece and handle 11 when the clutch lever inserts in the clutch groove, switching piece 20 then switches clutch structure's separation and reunion state through the removal of drive clutch lever, correspondingly, because handle 11 and clutch have the rotation action, therefore, it comes to butt with the clutch lever to need to set up convex butt plate on the switching piece 20 usually, of course, clutch structure also can adopt other structures commonly used, technical staff in the art can select in a flexible way as required.

Referring to fig. 4, in this embodiment, when switching piece 20 is located the first position, prevent that the cat eye structure is the function launch state, from this, the user need rotate handle 11 earlier when going out and unblank, handle 11 rotates back switching piece 20 can automatic switch-over to the first position for prevent that the function of cat eye structure launches, can effectively avoid the user to forget to open the condition of preventing the cat eye function after going out, can effectively guarantee the theftproof effect of lock. In other embodiments, also can set up to switch 20 and be located the first position time, prevent cat eye structure for the function off-state, skilled person in the art can be according to the nimble setting of in-service use needs.

Referring to fig. 1, in this embodiment, switch 20 is provided with exposed operation portion 23, can supply user manual operation switch 20 from this, and in this embodiment, operation portion 23 is the driving lever of setting on switch 20, and the user can remove switch 20 by the first position to the second position through stirring the driving lever for prevent that cat eye function closes, then can rotate handle 11. In other embodiments, the operation unit 23 may be any other suitable operation structure such as a dial, a knob, a push button, or a lever, or may be any other suitable operation structure such as a motor or the like to automatically drive the switch 20 to move, or may drive the switch 20 to move by another linkage mechanism such as turning of a key or turning of an outside door handle, and the present invention is not limited thereto.

Referring to fig. 2 to 4, in the present embodiment, the first elastic restoring member 51 and the second elastic restoring member 52 both use springs, which are simple in structure and convenient to install and use, and in other embodiments, the first elastic restoring member 51 and the second elastic restoring member 52 may also use other suitable elastic structures such as torsion springs, elastic pull ropes, elastic pieces, and the like, but are not limited thereto.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The utility model also provides a lock, including the utility model provides a prevent cat eye switching structure that unblanks, consequently have above-mentioned advantage equally.

The above is only the preferred embodiment of the present invention, as long as the technical solution of the purpose of the present invention is realized by the substantially same means, all belong to the protection scope of the present invention.

Claims (10)

1. The utility model provides a prevent cat eye and unblank and switch structure which characterized in that includes:

the lock comprises a lock base, a lock handle and a cat eye prevention structure matched with the handle, wherein the handle is arranged on the lock base and can rotate;

the switching piece is movably arranged on the lock seat and can switch the opening and closing of the function of the cat eye prevention structure through the movement of the switching piece between a first position and a second position; the switching piece is provided with a first movement limiting part;

the elastic movement limiting piece is arranged on the lock seat, and a second movement limiting part matched with the first movement limiting part is arranged on the elastic movement limiting piece; the switching piece can be operated to switch from the first position to the second position, and when the switching piece is positioned at the second position, the second movement limiting part is matched with the first movement limiting part to prevent the switching piece from moving to the first position;

the unlocking piece is arranged on the lock seat and can be driven by the rotation of the handle to move, and when the unlocking piece moves, the unlocking piece can be abutted against the elastic movement limiting piece to enable the elastic movement limiting piece to deform to release the matching of the second movement limiting part and the first movement limiting part;

and the first elastic resetting piece is used for driving the switching piece to move from the second position to the first position after the first movement limiting part and the second movement limiting part are disengaged.

2. The switching structure for preventing the cat's eye from unlocking according to claim 1, wherein the first movement limiting portion and the second movement limiting portion are engaged with each other in abutment, and the elastic movement limiting member is elastically deformable to displace the second movement limiting portion from the first movement limiting portion.

3. The switching structure of claim 1, wherein the switching member is movable, and at least one first movement limiting portion is disposed on each of two opposite sides of the switching member in the moving direction, and at least one elastic movement limiting member is disposed on each of two sides of the lock seat corresponding to the switching member.

4. The switching structure of claim 1, wherein the elastic movement limiting member is a spring plate, and the spring plate is bent and extended to form the second movement limiting portion.

5. The switching structure for preventing the peep hole from unlocking according to claim 4, wherein both ends of the elastic movement limiting piece are fixed on the lock seat, and the second movement limiting part is positioned in the middle of the elastic movement limiting piece.

6. The switching mechanism for preventing the cat eye from unlocking according to claim 1, wherein the unlocking member is movably disposed on the lock base; the handle is provided with a driving disc, and the handle can be in sliding butt joint with the unlocking piece through the driving disc to drive the unlocking piece to move when rotating; still include the second elasticity piece that resets, the second elasticity piece that resets is used for driving the unblocking spare removes and resets.

7. The switching structure of claim 1, wherein the switching member includes a slot formed on the handle, and the switching member is provided with a lock pin, and the switching member is movable to insert the lock pin into the slot to restrict rotation of the handle or remove the lock pin from the slot to release the restriction on the handle.

8. The switching structure of claim 7, wherein the handle is provided with at least one locking groove on each of two opposite sides of the handle.

9. The switching structure for preventing the cat eye from unlocking according to claim 1, wherein the switching structure for preventing the cat eye comprises a free piece and a clutch structure arranged between the handle and the free piece, the free piece is rotatably arranged on the lock base and used for being connected with the lock cylinder, and the clutch state of the clutch structure can be switched by the movement of the switching piece.

10. A door lock comprising the switching mechanism for preventing the peep hole from being unlocked as set forth in any one of claims 1 to 9.

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