CN201068674Y - Anti-theft component of lock core - Google Patents

Abstract

An anti-theft assembly for a lock cylinder comprises an outer sleeve and a key, wherein one end of the outer sleeve is provided with an opening for accommodating the lock cylinder in the outer sleeve, and the other end of the outer sleeve is provided with a through hole for inserting the key into a key hole of the lock cylinder after penetrating through the through hole. In addition, a blocking part is formed on the wall of one side of the through hole, a movable groove is formed on the wall of the other side of the through hole, and the key is provided with two opposite notches corresponding to the blocking part and the movable groove, so that the key can rotate in the through hole to unlock and lock. Therefore, when a thief uses a tool to unlock the lock through the through hole by force, the stop part can effectively limit the rotation of the tool because the tool does not have the design of two opposite notches of the key, so that the difficulty of unlocking the lock by force of the thief is relatively increased, and the anti-theft safety performance of the lock is improved.

Description

Lock core anti-theft components

technical field

The utility model relates to a lock accessory, in particular to a lock cylinder anti-theft component with anti-theft function.

Background technique

Please refer to Fig. 1, the lock core 1 in the prior art mainly has a lock case 11 which is substantially cylindrical, and a rotating shaft 12 and a lock ball group (not shown) are arranged inside the lock case 11, the rotating shaft One end of 12 is provided with a key hole 121 , and the lock bead set can cooperate with the unlocking portion 161 of a key 16 to release the rotation restriction of the rotating shaft 12 . A locking bolt 13 is arranged on the outer peripheral surface of the lock housing 11, and the locking bolt 13 can be telescopically moved in conjunction with the rotation of the rotating shaft 12 to achieve the functions of unlocking and locking. One end of the rotating shaft 12 having a key hole 121 can be combined with The protective panel 14 is provided with a through hole 141 corresponding to the key hole 121 .

Further, an outer sleeve 15 can be sleeved on the outside of the lock core 1 to protect the lock core 1 . The outer sleeve 15 defines a through hole 151 and a through hole 152 respectively corresponding to the key hole 121 and the lock bolt 13 . Wherein the through hole 152 can pass through the lock bolt 13, and the through hole 151 forms a first rotating space 151a on the upper edge of the hole wall on one side, and forms a first rotating space 151a diagonally on the lower edge of the hole wall on the other side. Two rotating spaces 151b. In this way, when the user inserts the key 16 into the key hole 121 through the through hole 151 and the through hole 141, the unlocking portion 161 of the key 16 can correspondingly link the lock bead set, thereby unlocking the lock bead set pair. The rotation limit formed by the rotating shaft 42 . As shown in Figures 1 and 2, the user rotates the key 16 in a specific direction, so that the upper end of the key 16 rotates into the first rotating space 151a, and the lower end of the key 121 rotates into the second rotating space 151b, so as to drive the rotating shaft 12 to rotate, and then control the lock bolt 13 to perform the unlocking or locking action.

The first rotating space 151 a and the second rotating space 151 b formed by the through hole 151 of the outer sleeve 15 can provide the key 16 to rotate smoothly after being inserted into the through hole 151 . Relatively speaking, when a thief intends to illegally unlock the existing lock core 1, he can also use a tool to insert the key hole 121 through the through hole 151 of the outer sleeve 15, because the hole wall of the through hole 151 The first rotating space 151 a and the second rotating space 151 b formed on both sides cannot effectively restrict the rotation of the tool 17 (as shown in FIG. 2 ). Therefore, the thief can still forcibly rotate the tool 17 directly in the through hole 151 to force the rotating shaft 12 to rotate cooperatingly, thereby achieving the purpose of illegal unlocking. Therefore, the design of the outer sleeve 15 of the existing lock core 1 still has the above-mentioned shortcomings in the anti-theft function.

Utility model content

The purpose of the utility model is to solve the problems existing in the above-mentioned prior art, and to provide a lock cylinder anti-theft assembly.

In order to achieve the purpose of the above-mentioned utility model, the utility model adopts the following technical scheme: a lock core anti-theft assembly, which includes an outer sleeve and a key, and one end of the outer sleeve is provided with an opening for accommodating a lock core in Inside the outer sleeve, the other end of the outer sleeve is provided with a through hole for the key to be inserted into a key hole of the lock core after being stretched. In addition, one side hole wall of the through hole forms a stopper, and the other side hole wall forms a movable groove, and the key is provided with two opposite notches corresponding to the stopper part and the movable groove, so that the key can be placed in the through hole. Rotate inside for unlocking and locking actions.

The utility model improves the shortcomings of the above-mentioned prior art. It uses an outer sleeve to be sleeved outside a lock core, and a stopper and a movable groove are respectively formed on the two side walls of a through hole of the outer sleeve. , so that when you want to turn a rotating shaft of the lock core, you must match a key with two opposite notch designs, so that the key can be smoothly rotated in the through hole to further rotate the rotating shaft to perform the unlocking action, so it can improve The difficulty for a thief to illegally unlock the lock core makes the utility model have a better anti-theft effect.

Description of drawings

Figure 1: An exploded perspective view of a lock core in the prior art.

Fig. 2: A schematic diagram of the use state of the lock core in the prior art when it is unlocked and locked.

Fig. 3: An exploded perspective view of the anti-theft component of the lock core of the preferred embodiment of the present invention for matching with the lock core.

Fig. 4: Schematic diagram of the use state of the lock core anti-theft assembly of the preferred embodiment of the present invention when it is locked.

Fig. 5: Schematic diagram of the use state of the lock cylinder anti-theft assembly of the preferred embodiment of the present invention when it is unlocked.

Fig. 6: A combined cross-sectional view of the lock cylinder anti-theft assembly of the preferred embodiment of the present invention along line 6-6 in Fig. 5 .

【Description of symbols of main parts】

1 lock core 11 lock case 12 shaft

121 key hole 13 lock bolt 14 protection panel

141 through holes 15 outer sleeve 151 through holes

151a first rotating space 151b second rotating space 152 perforation

16 key 161 unlocking part 2 outer sleeves

21 opening 22 through hole 221 stopper

222 Activity slot 23 Perforation 24 Positioning hole

241 positioning pin 3 key 31 key rod

31a first end face 31b second end face 311 unlatch part

32 shank 33 gap 4 lock core

41 lock bolt 42 shaft 43 key hole

44 protective panel 441 through hole

Detailed ways

In order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the preferred embodiments of the present utility model, together with the accompanying drawings, are described in detail below:

Please refer to FIG. 3 , the lock core anti-theft assembly of the preferred embodiment of the present invention includes an outer sleeve 2 and a key 3 . Wherein the outer sleeve 2 is provided with an opening 21 , a through hole 22 , a through hole 23 and a positioning hole 24 . The opening 21 is formed at one end of the outer sleeve 2 for a lock core 4 to be accommodated and combined in the outer sleeve 2 through the opening 21 . The through hole 22 is arranged at the other end of the outer sleeve 2, and a stop portion 221 is formed on one side of the through hole 22, and a movable groove 222 is formed on the other side of the hole wall. The movable groove 222 preferably forms As shown in the figure, there is a fan-shaped groove, so that the key 3 can rotate and move in the through hole 22 through the movable groove 222 . The through hole 23 is disposed on the outer peripheral wall of the outer sleeve 2 for a lock bolt 41 passing through the lock core 4 . The positioning hole 24 is disposed on the outer peripheral wall of the outer sleeve 2 for passing through a positioning pin 241 , and using the positioning pin 241 to fix the lock core 4 .

Please refer to Fig. 3 again, the key 3 of the preferred embodiment of the present invention is mainly used to insert through the through hole 22 of the outer sleeve 2, and perform unlocking and locking actions for the lock core 4. The key 3 is provided with a key shaft 31 , a handle 32 and two notches 33 . The key shaft 31 has a first end face 31a and a second end face 31b parallel to each other. At least one side of the key shaft 31 vertically connecting the first end face 31a and the second end face 31b is provided with an unlocking portion 311. The portion 311 is preferably composed of several unlocking grooves of different depths, so as to correspondingly link a lock bead set (not shown) inside the lock core 4 to perform unlocking and locking actions. The handle 32 is combined with one end of the rod body 31 , so that a user can hold the handle 32 to control the rotation of the rod body 31 . The two gaps 33 are respectively provided on the first end surface 31a and the second end surface 31b of the rod body 31 corresponding to the stopper portion 221 and the movable groove 222 of the outer sleeve 2, so that the key 3 can pass through the two relative gaps 33 in Rotation is performed in the through hole 22 .

Please refer to Figures 3 and 4, the lock core anti-theft assembly disclosed in the present invention is mainly used for assembling with a lock core 4, the outer peripheral surface of the lock core 4 is provided with a retractable and movable lock bolt 41, A lock bead set (not shown) and a rotating shaft 42 are disposed inside the lock core 4 , and a key hole 43 is formed at one end of the rotating shaft 42 . In addition, one end of the lock core 4 with the keyhole 43 can also be combined with a protective panel 44, and the protective panel 44 is provided with a through hole 441 corresponding to the keyhole 43 (the structure and action of the lock core 4 are in the prior art. This will not be repeated). In this way, the outer sleeve 2 of the present utility model can be sleeved on the outside of the lock core 4 by using its opening 21, and the positioning pin 241 can be used to pass through the positioning hole 24 to fix the lock core 4, so that the outer sleeve can be used The cylinder 2 protects the lock core 4 from being damaged by external force. In addition, the key hole 43 of the lock core 4 corresponds to the through hole 22 of the outer sleeve 2 , and the through hole 22 can provide an anti-theft function.

Please refer to Fig. 3-6, when the lock core 4 equipped with the lock core anti-theft assembly of the present utility model is to be unlocked, the key rod 31 of the key 3 can be passed through the through hole 22 of the outer sleeve 2 and The through hole 441 of the protective panel 44 is inserted into the key hole 43, so that the height difference formed by the unlocking part 311 of the key 3 corresponding to the lock ball group (not shown) inside the lock core 3 is used to release the lock. The rotation of the shaft 42 is limited by the bead set. At this time, as shown in Figures 5 and 6, through the design of the two relative notches 33 of the key 3, when the user wants to use the key 3 to rotate the shaft 42, one of the notches 33 of the key 3 can be relatively rotated into the movable slot 222, and the other notch 33 allows the key 3 to freely rotate in the through hole 22 without being restricted by the stop portion 221, so that the rotation of the rotating shaft 42 is linked with the lock bolt 41 to complete the unlocking action.

Further, when a thief intends to utilize a tool to unlock the lock illegally, even if the thief directly utilizes the tool to insert the key hole 43 through the through hole 22 of the outer sleeve 2, since the tool does not have the key 3 Therefore, the stopper 221 of the through hole 22 can effectively limit the rotation of the tool, so that the thief cannot forcibly rotate the rotating shaft 42 by rotating the tool, thereby increasing the security of the lock cylinder 4 by the thief. The difficulty of illegal unlocking action can effectively improve its anti-theft function.

To sum up, the utility model has designed the stopper 221 and the movable groove 222 of the through hole 22 of the outer sleeve 2, so that when the rotating shaft 42 of the lock core 4 is to be rotated, a key with two opposite notches 33 must be used. 3, the rotating shaft 42 can be rotated smoothly to achieve the purpose of unlocking. Therefore, even if the thief intends to use a tool to forcibly rotate the rotating shaft 42, the rotation of the tool can be effectively restricted by the stop portion 221 of the through hole 22 of the outer sleeve 15 of the present invention, which can effectively improve the thief's ability to illegally unlock the lock. Difficulty.

Claims (9)

1. A lock core anti-theft component, which includes an outer sleeve and a key, one end of the outer sleeve is provided with an opening for combining a lock core inside the outer sleeve, the other end of the outer sleeve There is a through hole for the key to pass through and combine with the lock core, and at least one side of the key is provided with an unlocking part, which is characterized in that: One side hole wall of the through hole of the outer sleeve forms a stopper, and the other side hole wall forms a movable groove. The key has a first end face and a second end face parallel to each other. The first end face and the second end face The end face is respectively provided with a notch for the stop portion and the movable groove. 2. The lock cylinder anti-theft assembly according to claim 1, wherein the movable groove is a fan-shaped groove. 3. The lock core anti-theft assembly according to claim 1 or 2, characterized in that, the outer peripheral wall of the outer sleeve is provided with a positioning hole, and the positioning hole allows a positioning pin to penetrate and connect with the lock core. 4. The lock cylinder anti-theft assembly according to claim 1 or 2, wherein a perforation is provided on the outer peripheral wall of the outer sleeve. 5. The lock cylinder anti-theft assembly according to claim 3, wherein a perforation is formed on the outer peripheral wall of the outer sleeve. 6 . The lock cylinder anti-theft assembly according to claim 1 or 2 , wherein the unlocking portion is composed of several unlocking grooves with different depths. 7 . 7 . The lock cylinder anti-theft assembly according to claim 5 , wherein the unlocking portion is composed of several unlocking grooves of different depths. 7 . 8. The lock cylinder anti-theft assembly according to claim 1 or 2, wherein a handle is provided at one end of the key. 9. The lock cylinder anti-theft assembly according to claim 7, wherein a handle is provided at one end of the key.

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