CN104594714B

CN104594714B - Lock cylinder hole protection structure

Info

Publication number: CN104594714B
Application number: CN201510037343.XA
Authority: CN
Inventors: 魏祖旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-24
Filing date: 2015-01-24
Publication date: 2022-08-30
Anticipated expiration: 2035-01-24
Also published as: CN104594714A

Abstract

The invention discloses a lock cylinder hole protection structure, which comprises a fixed table, wherein a key hole for inserting a key and communicated with a lock cylinder hole is arranged in the middle of the fixed table, two protective edges are formed above the fixed table and extend upwards at two ends of the key hole, a protective groove is formed between the two protective edges, the protective groove is movably provided with a slide block at least at one side of the key hole, the slide block is provided with a U-shaped recess facing the key hole, at least one L-shaped protective tooth is hinged in the U-shaped recess, at least one vertical through hole is arranged on the sliding block, the fixed platform is provided with a blind hole corresponding to the through hole, a first marble with the height lower than the depth of the blind hole is movably arranged in the blind hole, the bottom of the blind hole is also provided with a spring which is abutted against the first marble, a second marble is movably accommodated in the through hole, and the sliding block is arranged on the protective groove through an elastic structure. The invention has the advantages of protecting the lock cylinder, avoiding external unlocking and simultaneously avoiding sundries from entering the lock cylinder.

Description

Lock cylinder hole protection structure

Technical Field

The invention relates to a coded lock, in particular to a lock cylinder hole protection structure which can protect a lock cylinder, prevent an external force from unlocking and prevent sundries from entering the lock cylinder.

Background

The property and information safety problem is always a problem highly regarded by various industries, so that the lock is applied everywhere, but a lock cylinder hole of the traditional lock is directly opened outwards, so that the lock cylinder hole is easy to be opened by a thief by using a certain tool, and meanwhile, the lock cylinder hole is not protected, so that a child can insert sundries into the lock cylinder hole to block the lock cylinder hole, and the lock cannot be opened.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a lock cylinder hole protection structure which can protect a lock cylinder, prevent external unlocking and prevent sundries from entering the lock cylinder.

The invention is realized by the following technical measures that the lock cylinder hole protection structure comprises a fixed table, a key hole for inserting a key and communicated with the lock cylinder hole is arranged in the middle of the fixed table, two protective edges are formed by extending upwards at two ends of the key hole above the fixed table, a protective groove is formed between the two protective edges, the protective groove is movably provided with a slide block at least at one side of the key hole, the slide block is provided with a U-shaped recess facing the key hole, at least one L-shaped protective tooth is hinged in the U-shaped recess, at least one vertical through hole is arranged on the sliding block, the fixed platform is provided with a blind hole corresponding to the through hole, a first marble with the height lower than the depth of the blind hole is movably arranged in the blind hole, the bottom of the blind hole is also provided with a spring which is abutted against the first marble, a second marble is movably accommodated in the through hole, and the sliding block is arranged on the protective groove through an elastic structure.

As a preferable mode, two sliding blocks are movably arranged on the protective groove in a symmetrical key hole, the two sliding blocks are oppositely provided with a U-shaped recess, at least one L-shaped protective tooth is hinged in the U-shaped recess, each sliding block is provided with at least one through hole, the fixed platform is provided with a blind hole corresponding to the through hole, a first marble with the height lower than the depth of the blind hole is movably arranged in the blind hole, the bottom of the blind hole is also provided with a spring abutting against the first marble, a second marble is movably accommodated in the through hole, and the two sliding blocks are respectively arranged on the protective groove through elastic structures; when the key is inserted between the two sliding blocks, the slope is arranged at the position of the key corresponding to the shoulder of the L-shaped protection tooth, the L-shaped protection tooth rotates when the slope is inserted into the shoulder of the two L-shaped protection teeth, the movable end of the L-shaped protection tooth presses the second ball downwards, the interface of the first ball and the second ball is the contact surface of the sliding block and the fixed table, the poking-out part at the front end of the key presses the sliding block outwards, so that the key is inserted into the lock core hole through the key hole, and the elastic structure restores to enable the two sliding blocks to slide inwards to return to the protection state when the key is poked out.

Preferably, the hinged end of the protection tooth is a circular expansion head, and the circular expansion head is internally tangent with the outer edge of the U-shaped recess.

As a preferred mode, the sliding block is further hinged with at least one false protection tooth, the movable end of the false protection tooth is not abutted to the marble, and the false protection tooth is reset through an elastic sheet.

Preferably, the slider is provided with two L-shaped guard teeth, the key is provided with slopes with different slopes at the shoulders of the L-shaped guard teeth corresponding to different positions, and the lengths of the second pins of the L-shaped guard teeth corresponding to different positions are different.

Preferably, the elastic structure is respectively abutted on the fixed table and the sliding block and the spring plate.

Preferably, a top cover covers the fixed table.

Preferably, the fixing table is fixed to an end of the key cylinder.

Preferably, the fixed table is provided with a lock housing.

As a preferred mode, the two inner sides of the U-shaped recess are oppositely provided with shaft holes, the shaft holes are provided with rotating shafts, and the hinged ends of the L-shaped protection teeth are provided with rotating holes penetrating through the rotating shafts.

The invention is in a protection state when the key is not inserted, and the sliding block is firmly fixed on the fixed table in the protection state and cannot slide to two sides; the invention uses the slope and the poking part arranged at the front end of the key, when the slope is inserted into the shoulder part of the two L-shaped protection teeth, the L-shaped protection teeth are rotated, so that the movable end of the L-shaped protection teeth is used for pressing the second pin tumbler downwards, the interface of the first pin tumbler and the second pin tumbler is the contact surface of the slide block and the fixed platform, the slide block is separated from the fixed platform, the poking part at the front end of the key further props against the two sides of the slide block to slide the slide block outwards, the key hole is opened, the key can be inserted into the lock cylinder hole through the key hole, and when the key is poked out, the elastic structure returns to enable the two slide blocks to slide inwards to return to the protection state.

Drawings

FIG. 1 is a schematic structural view of the present invention without a top cover;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a schematic sectional view of the unlocked embodiment of the present invention;

fig. 4 is a schematic view of a state when a key is inserted according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings.

A lock cylinder hole protection structure refers to fig. 1 to 4, and includes a fixed station 300, a key hole 302 for a key 100 to insert into and communicate with the lock cylinder hole is provided in the middle of the fixed station 300, two protection edges 301 are formed by extending upwards at two ends of the key hole 302 above the fixed station 300, a protection groove is formed between the two protection edges 301, two sliders 400 are movably provided on the protection groove symmetrical to the key hole 302, the two sliders 400 are oppositely provided with a U-shaped recess 403, at least one L-shaped protection tooth 404 is hinged in the U-shaped recess 403, each slider 400 is provided with at least one through hole 405, the fixed station 300 is provided with a blind hole 303 corresponding to the through hole 405, a first pin 602 whose height is lower than the depth of the blind hole 303 is movably provided in the blind hole 303, a spring 603 abutting against the first pin 602 is further provided at the bottom of the blind hole 303, a second pin 601 is movably accommodated in the through hole 405, the length of the second pin 601 is not longer than the depth of the through hole 405, and the two sliders 400 are respectively arranged on the protective grooves through the elastic structures 406.

In an embodiment of a lock cylinder hole protection structure, please refer to fig. 2 to 4, based on the foregoing technical solution, it may be further specifically that the hinged end of the protection tooth is a circular expansion head, and the circular expansion head is inscribed in an outer edge of the U-shaped recess. Thereby ensuring that the keyway 302 is always closed when the guard teeth are rotated.

In an embodiment of a core locking hole protection structure, please refer to fig. 1 to 4, based on the foregoing technical solution, it may be further specifically that the slider 400 is further hinged with at least one dummy protection tooth 408, a structure of the dummy protection tooth 408 is substantially similar to that of the L-shaped protection tooth 404, but a movable end of the dummy protection tooth 408 does not abut against the pin, and the dummy protection tooth 408 is reset by a spring plate 401. So that the L-shaped protection tooth which is not installed can be kept closed, and the function of confusing the destructor is also realized.

In an embodiment of a core hole guarding structure, please refer to fig. 1 to 4, based on the foregoing technical solution, it may be specifically that two L-shaped guarding teeth 404 are disposed on the slider 400, the key 100 is provided with slopes 102 with different slopes at shoulders of the L-shaped guarding teeth 404 corresponding to different positions, and the lengths of the second pins 601 of the L-shaped guarding teeth 404 corresponding to different positions are different. Changes are added to avoid theft.

In an embodiment of a core hole protection structure, please refer to fig. 2, based on the foregoing technical solution, it is further possible that the elastic structure 406 is respectively abutted against the fixed stage 300 and the slider 400.

In an embodiment of a key hole protection structure, please refer to fig. 2 to 4, based on the foregoing technical solution, it may be specifically that a top cover 200 is further covered outside the fixing station 300, and the top cover 200 is provided with a strip-shaped hole 201 communicated with the key hole 302. In an embodiment of a lock cylinder hole protection structure, please refer to fig. 1 to 4, based on the foregoing technical solutions, it is also possible that the fixing table 300 is fixed at an end of the lock cylinder 500. In other embodiments it may also be fixed to the lock housing or to the door.

In an embodiment of a core locking hole protection structure, please refer to fig. 2, based on the foregoing technical solution, specifically, a shaft hole 402 may be oppositely disposed on two inner sides of the U-shaped recess 403, a rotating shaft 407 is disposed on the shaft hole 402, and a rotating hole passing through the rotating shaft 407 is disposed at a hinged end of the L-shaped protection tooth 404.

The core hole protection structure of the present invention has been described above for the purpose of facilitating understanding of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any changes, modifications, substitutions, combinations, and simplifications that do not depart from the principle of the present invention shall be regarded as equivalent replacements within the scope of the present invention.

Claims

1. The utility model provides a lock core hole protective structure which characterized in that: comprises a fixed table, a key hole which is used for inserting a key and is communicated with a lock cylinder hole is arranged in the middle of the fixed table, two protective edges are formed above the fixed table and extend upwards at two ends of the key hole, a protective groove is formed between the two protective edges, the protective groove is movably provided with a slide block at least at one side of the key hole, the slide block is provided with a U-shaped recess facing the key hole, at least one L-shaped protective tooth is hinged in the U-shaped recess, at least one vertical through hole is arranged on the sliding block, the fixed platform is provided with a blind hole corresponding to the through hole, a first marble with the height lower than the depth of the blind hole is movably arranged in the blind hole, the bottom of the blind hole is also provided with a spring which is propped against the first marble, a second marble is movably accommodated in the through hole, the sliding block is arranged on the protective groove through an elastic structure, and the movable end of the L-shaped protective tooth is abutted against the second marble;

the slide block is in a protection state when the key is not inserted, and is firmly fixed on the fixed table in the protection state and cannot slide to two sides; the front end of the key is provided with a slope and a poking part, the L-shaped protection tooth rotates when the slope is inserted into the shoulder part of the two L-shaped protection teeth, so that the second pin tumbler is pressed downwards by utilizing the movable end of the L-shaped protection tooth, the interface of the first pin tumbler and the second pin tumbler is the contact surface of the sliding block and the fixed platform, the sliding block is separated from the fixed platform, the poking part at the front end of the key further abuts against two sides of the sliding block to enable the sliding block to slide outwards, the key hole is opened, the key can be inserted into the lock cylinder hole through the key hole, and the elastic structure restores to enable the two sliding blocks to slide inwards to return to the protection state when the key is poked out.

2. The cylinder hole guard structure according to claim 1, wherein: two sliding blocks are movably arranged on the protective groove in a symmetrical key hole mode, the two sliding blocks are oppositely provided with U-shaped recesses, at least one L-shaped protective tooth is hinged in each U-shaped recess, each sliding block is provided with at least one through hole, the fixed platform is provided with a blind hole corresponding to the through hole, a first marble with the height lower than the depth of the blind hole is movably arranged in each blind hole, the bottom of each blind hole is further provided with a spring abutting against the first marble, a second marble is movably arranged in each through hole, and the two sliding blocks are respectively arranged on the protective groove through elastic structures; when the key is inserted between the two sliders, the slope is arranged at the position of the key corresponding to the shoulder of the L-shaped protection tooth, the L-shaped protection tooth rotates when the slope is inserted into the shoulder of the two L-shaped protection teeth, the movable end of the L-shaped protection tooth presses the second pin downwards, the interface of the first pin and the second pin is the contact surface of the slider and the fixed platform, the poking part at the front end of the key presses the slider to enable the slider to slide outwards, the key is inserted into the lock core hole through the key hole, and the elastic structure restores to enable the two sliders to slide inwards to return to the protection state when the key is poked out.

3. The cylinder hole prevention structure according to claim 1 or 2, wherein: the hinged end of the protection tooth is a circular expansion head, and the circular expansion head is internally tangent to the outer edge of the U-shaped recess.

4. The cylinder hole prevention structure according to claim 1 or 2, wherein: the sliding block is at least hinged with a false protection tooth, the movable end of the false protection tooth is not abutted against the marble, and the false protection tooth is reset through an elastic sheet.

5. The cylinder hole prevention structure according to claim 1 or 2, wherein: the sliding block is provided with two L-shaped protection teeth, slopes with different slopes are arranged at the positions, corresponding to the L-shaped protection teeth at different positions, of the key, and the lengths of the second pins corresponding to the L-shaped protection teeth at different positions are different.

6. The cylinder hole prevention structure according to claim 1 or 2, wherein: the elastic structure is respectively abutted against the fixed platform and the sliding block and the spring leaf.

7. The cylinder hole prevention structure according to claim 1 or 2, wherein: a top cover is covered outside the fixed table.

8. The cylinder hole guard structure according to claim 1 or 2, wherein: the fixed station is fixed at the end part of the lock cylinder.

9. The cylinder hole prevention structure according to claim 1 or 2, wherein: the fixed station is arranged on the lock shell.

10. The cylinder hole prevention structure according to claim 1 or 2, wherein: the U-shaped sunken two insides are provided with the shaft hole relatively, be provided with the pivot on the shaft hole, the hinged end of L-shaped protection tooth is provided with the commentaries on classics hole that passes the pivot.