CN213205248U

CN213205248U - Lock cylinder protection structure

Info

Publication number: CN213205248U
Application number: CN202021054163.5U
Authority: CN
Inventors: 周万财; 祝洁如
Original assignee: Wenzhou Pheobon Hardware Co ltd
Current assignee: Wenzhou Pheobon Hardware Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-05-14
Anticipated expiration: 2030-06-10

Abstract

A lock cylinder protection structure comprises a lock shell, an inner container lock, an outer container lock and a thumb wheel, wherein a pin hole and a key hole are formed in the inner container lock and the outer container lock respectively, the key hole comprises long edges and short edges, a blocking mechanism is arranged on the end face of the key hole of the outer container lock and comprises a base, a sealing cover, a stop block, a first spring, a second spring, a limiting column and a turnover plate, the base is fixedly connected with the outer container lock, the base and the outer container lock are synchronously provided with the key hole, the stop block is provided with a long sliding through groove and a turnover plate groove, the long sliding through groove is arranged along the long edge direction of a key ring, hinged seats are symmetrically arranged on two sides of the long edge of the key hole relative to the base, a sliding column is arranged on the hinged seats, the sliding column is inserted into the long sliding through groove to be in sliding fit, the first spring is arranged between the stop block and the base, and drives; the turning plate groove is positioned on the other side of the stop block opposite to the first spring, and a hinge column and a limiting hole vertical to the base are arranged in the turning plate groove along the direction of the short edge.

Description

Lock cylinder protection structure

Technical Field

The invention relates to the technical field of locks, in particular to a lock cylinder protection structure.

Background

Cylinder locks, also known as ball locks, bead locks, bolt locks or pin tumbler locks, are one of the most common lock structures. Tumbler locks are commonly used in cylinder locks. The center of the cylinder type lock is a cylindrical hole, a cylindrical lock core is arranged in the cylindrical hole, and the lock core can rotate when the cylinder type lock is opened.

The middle of the lock core is a groove for placing a key, one end of the groove is opened for placing the key, and the tail end of the groove is provided with a lever. When the key is fully inserted, the lever receives a bolt to allow the lock core to rotate. The upper part of the groove is provided with a protruding part to prevent the lower marble from falling down and increase the difficulty of unlocking by a tool, five to six small holes are arranged above the lock core and form a straight line to place the lower marbles with different lengths, and the lower part of the lower marble is spherical to allow an inserted key to pass easily.

Above each lower marble is a corresponding driver pin (also known as an upper spring or upper ball). The flat head marble is pressed downwards by the spring. A simple lock is provided with only one flat head pin per lower pin. More complex locks, such as those that can be opened with multiple keys, have more than one flat tumbler on the lower tumbler. The lock has several vertical pits in the casing for holding flat head balls and springs.

When the pin tumbler lock is assembled, each pin tumbler is pressed into the lock core downwards by the spring. The place where the lock core is connected with the shell is called a cut point (shear point). After a proper key is inserted into the lock core, all the marbles are pushed upwards by the teeth of the key, the gaps between the marbles are just right at the intercept points, so that the lock core can be rotated, and the lock can be opened. After the key is pulled out, all the marbles fall off and are blocked above the interception point, and the lock cylinder cannot rotate.

The existing spring lock core has the following problems: although the lock cannot be opened after the difference key is inserted into the lock core, the inner wall structure of the lock core is extremely easy to damage through violent operation in the lock core, so that a structure which ensures that the difference key is difficult to insert into the lock core hole so as to protect the lock core is needed.

Disclosure of Invention

The invention provides a protection structure capable of primarily preventing a difference key from entering a lock cylinder in order to solve the technical defects. The technical scheme of the invention is as follows: a lock core protection structure comprises a lock shell, an inner container lock, an outer container lock and a thumb wheel, wherein the inner container lock and the outer container lock are both provided with a pin hole and a key hole, the key hole comprises a long edge and a short edge, the end surface of the key hole of the outer liner lock is provided with a blocking mechanism, the blocking mechanism comprises a base, a sealing cover, a stop block, a first spring, a second spring, a limiting column and a turnover plate, wherein the base is fixedly connected with the outer container lock, the base and the outer container lock are synchronously provided with a key hole, the stop block is provided with a long sliding through groove and a turning plate groove, the long sliding through groove is arranged along the long edge direction of the key ring, the base is symmetrically provided with hinged seats opposite to the two sides of the long edge of the key hole, the hinge seat is provided with a sliding column which is inserted into the long sliding through groove to be in sliding fit, the first spring is arranged between the stop block and the base to drive the stop block to shield the key hole;

the turnover plate groove is located on the other side of the stop block relative to the first spring, the turnover plate groove is internally provided with a hinge column and a limiting hole perpendicular to the base along the direction of the short edge, the second spring and the limiting hole are coaxially arranged, one end of the second spring is fixed with the base, the other end of the second spring is fixed with the limiting column, the limiting column is driven to enter the limiting hole, the turnover plate is arranged in the turnover plate groove and is in hinge fit with the hinge column, and the limiting column is driven to exit the limiting hole by the turnover plate.

By adopting the technical scheme, through the arranged blocking mechanism, the stop block is firstly utilized to block most of the key holes, so that the difference key cannot directly enter the lock cylinder. And the mode that the drive dog lets the key ring open is:

the width of the gap part of the key ring exposed by the stop block is set according to the width of the insertion end of a correct key, so that a part of different keys directly impact on the stop block because the width of the insertion end is larger than the gap, and the stop block cannot be driven to leave and is screened out by a first batch of keys.

And the correct key smoothly enters the blocking mechanism because the width of the insertion end is matched and is in contact with the turnover plate, so that the turnover plate is driven to rotate and be recovered into the turnover plate groove. The turnover plate is abutted to the limiting column in the turnover plate groove while rotating, and the limiting column is driven to exit from the limiting hole, so that the limiting column limits the stop block.

Then along with the follow-up position entering key ring of correct key, promote the dog and let along long smooth groove letting out for correct key can get into the lock core smoothly.

And after the correct key is withdrawn, the stop block is pushed to slide along the long sliding through groove to reset under the action of the first spring, and the stop block returns to the shielding position. At the moment, the position of the limiting hole is coaxial with that of the limiting column again, and the limiting column is driven to enter the limiting hole again under the action of a second spring, so that the stop block is locked to prevent the stop block from moving, and the stop mechanism resets.

The utility model discloses utilize blocking mechanism's chain cooperation, can block most difference key and get into, the violent destruction of difference key has been avoided to a certain extent.

The utility model discloses a further setting: and a ball head is arranged at one end of the limiting column facing the limiting hole.

Adopt above-mentioned technical scheme, the bulb that sets up, when producing conflict with returning face plate, spacing hole, the surface of bulb more does benefit to mutual slip, makes spacing post withdraw from spacing hole smoothly.

The utility model discloses a further setting: and one end of the turnover plate is provided with a balancing weight.

By adopting the technical scheme, after the correct key is withdrawn, the two ends of the turnover plate are unbalanced due to the counterweight block at one end, the turnover is naturally generated, one end of the counterweight block is automatically moved out of the turnover plate groove, and the situation that the limiting column cannot enter the turnover plate groove is avoided.

The utility model discloses a further setting: and the edge of the turnover plate is provided with a chamfer.

By adopting the technical scheme, the chamfer is more beneficial to abutting against the limiting column.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 1;

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

FIG. 3 is a block diagram of an embodiment of the present invention, FIG. 2;

FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 5 is a block diagram of the present invention;

FIG. 6 is a view showing a change of a key-inserting state of the present invention in FIG. 1;

fig. 7 is a view showing a change of a key-inserting state of the present invention in fig. 2;

fig. 8 is a diagram illustrating a change of the key insertion state of the present invention.

Detailed Description

As shown in fig. 1-8, a lock core protection structure, the lock core includes a lock housing 1, an inner container lock, an outer container lock 12 and a thumbwheel, the inner container lock and the outer container lock 12 are respectively provided with a pin hole 13 and a key hole 14, the key hole 14 includes a long side and a short side, the end surface of the key hole 14 of the outer container lock 12 is provided with a blocking mechanism 2, the blocking mechanism 2 includes a base 21, a cover 22, a stopper 23, a first spring 24, a second spring 25, a spacing post 26 and a flip plate 27, the base 21 is fixedly connected with the outer container lock 12, the base 21 and the outer container lock 12 are synchronously provided with the key hole 14, the stopper 23 is provided with a long sliding through groove 231 and a flip plate groove 232, the long sliding through groove 231 is arranged along the direction of the long side of the key ring, hinged seats 211 are symmetrically arranged on two sides of the long side of the base 21 opposite to the key hole 14, a sliding column 212 is arranged on the base 211, the sliding column 212 is inserted in the long sliding through, the first spring 24 is arranged between the stop 23 and the base 21, and drives the stop 23 to shield the key hole 14;

the flap groove 232 is located on the other side of the stop block 23 opposite to the first spring 24, a hinge post 2321 and a limiting hole 2322 perpendicular to the base 21 are arranged in the flap groove 232 along the short side direction, the second spring 25 and the limiting hole 2322 are coaxially arranged, one end of the second spring is fixed to the base 21, the other end of the second spring is fixed to the limiting post 26, the limiting post 26 is driven to enter the limiting hole 2322, the turning plate 27 is arranged in the flap groove 232 and is in hinge fit with the hinge post 2321, and the turning plate 27 drives the limiting post 26 to exit the limiting hole 2322.

With the blocking mechanism 2 provided, the stopper 23 is first used to block most of the keyhole 14, so that the difference key cannot directly enter the lock cylinder. The way of driving the stop 23 to let the key chain open is:

firstly, according to the width of the insertion end of the correct key, the width of the gap part of the stop block 23 exposed out of the key ring is set, so that a part of the different keys directly impact on the stop block 23 because the width of the insertion end is larger than the gap, and the stop block 23 cannot be driven to leave, so that the different keys are screened out by the first batch.

The correct key smoothly enters the blocking mechanism 2 due to the matching width of the insertion end and contacts with the turnover plate 27, so that the turnover plate 27 is driven to rotate and be recovered into the turnover plate groove 232. When the turnover plate 27 rotates, the turnover plate abuts against the limiting column 26 in the turnover plate groove 232, the limiting column 26 is driven to exit from the limiting hole 2322, and thus the limitation of the limiting column 26 on the stop 23 is released.

Then, the stopper 23 is pushed to move back along the long sliding groove 231 along with the subsequent part of the correct key entering the key ring, so that the correct key can smoothly enter the lock cylinder.

When the correct key is withdrawn, the stopper 23 is pushed to slide along the long sliding groove 231 to return to the shielding position under the action of the first spring 24. At this time, the position of the limiting hole 2322 is coaxial with the position of the limiting column 26 again, and under the action of the second spring 25, the limiting column 26 is driven to enter the limiting hole 2322 again, the stop 23 is locked to prevent the stop from moving, and the blocking mechanism 2 is reset.

The utility model discloses utilize the chain cooperation of block mechanism 2, can block that most difference keys get into, the violent destruction of difference key has been avoided to a certain extent.

One end of the limiting column 26 facing the limiting hole 2322 is provided with a ball head 261.

When the arranged ball head 261 collides with the turnover plate 27 and the limiting hole 2322, the surfaces of the ball head 261 can more favorably slide with each other, so that the limiting column 26 can smoothly exit from the limiting hole 2322.

And one end of the turnover plate 27 is provided with a balancing weight.

After the correct key is withdrawn, the two ends of the turning plate 27 are unbalanced due to the counterweight block at one end, and the turning plate naturally turns, and one end of the counterweight block automatically moves out of the turning plate groove 232, so that the limiting column 26 is prevented from entering the turning plate groove 232.

The edge of the turnover plate 27 is provided with a chamfer.

The chamfer is more conducive to interference with the retention post 26.

Claims

1. The utility model provides a lock core protection architecture, the lock core is including lock shell, inner bag lock, outer courage lock and thumb wheel, all be equipped with bullet hole, key hole on inner bag lock, the outer courage lock, the key hole includes long limit and minor face, its characterized in that: the key hole end face of the outer container lock is provided with a blocking mechanism, the blocking mechanism comprises a base, a sealing cover, a stop block, a first spring, a second spring, a limiting column and a turnover plate, the base is fixedly connected with the outer container lock, the base and the outer container lock are synchronously provided with the key hole, the stop block is provided with a long sliding groove and a turnover plate groove, the long sliding groove is arranged along the long edge direction of the key ring, the base is symmetrically provided with hinge seats opposite to the long edge of the key hole, the hinge seats are provided with sliding columns, the sliding columns are inserted into the long sliding groove to be in sliding fit, the first spring is arranged between the stop block and the base, and the stop block is driven to block the key hole;

2. The lock cylinder protecting structure according to claim 1, characterized in that: and a ball head is arranged at one end of the limiting column facing the limiting hole.

3. The lock cylinder protecting structure according to claim 2, characterized in that: and one end of the turnover plate is provided with a balancing weight.

4. A lock cylinder protecting structure according to claim 3, characterized in that: and the edge of the turnover plate is provided with a chamfer.