CN212078954U - Anti-theft lock head with two-stage locking structure - Google Patents
Anti-theft lock head with two-stage locking structure Download PDFInfo
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- CN212078954U CN212078954U CN202020511539.4U CN202020511539U CN212078954U CN 212078954 U CN212078954 U CN 212078954U CN 202020511539 U CN202020511539 U CN 202020511539U CN 212078954 U CN212078954 U CN 212078954U
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Abstract
The utility model relates to a lock head of an anti-theft lock with a secondary locking structure, which comprises a shell, a lock core, a main unlocking piece and an auxiliary unlocking piece; the inner wall of the shell is provided with a main groove and an auxiliary groove; a plurality of blades are arranged in the lock cylinder, and the lock cylinder is provided with a first key groove and a second key groove; each blade is provided with a main groove, an auxiliary groove and a restriction groove; the main unlocking piece is provided with an inner clamping key and an outer clamping key; in a locking state, the outer clamping key is positioned in the main groove, the inner clamping key is positioned in the first key groove, the auxiliary unlocking piece is positioned in the auxiliary groove and the second key groove at the same time, and the lock cylinder is connected with the shell; when the lock is unlocked, the auxiliary unlocking piece is separated from the shell and falls into the auxiliary groove, and then the inner clamping key is pushed into the main groove; when the master key or other tools are used for abnormal unlocking, the outer clamping key is retained in the main groove, the inner clamping key completely falls into the first key groove, and the lock cylinder and the shell can rotate relatively to form an idling state. The utility model has the advantages of have idle running function, stronger theftproof performance to be applicable to small volume.
Description
Technical Field
The utility model relates to a pickproof lock tapered end with second grade locking structure.
Background
In the patent document of the invention named as a two-stage locking structure anti-theft lock head with the patent publication number of CN102535972B, referring to each figure of the patent document, especially the figures of figure 2 (a), 2 (b) and 5, wherein each blade is provided with a main groove 16 and an auxiliary groove 17, two sides of the auxiliary groove 17 are provided with a plurality of restricting grooves 23, when the lock is normally unlocked, the auxiliary unlocking key 5 and the main unlocking key 4 sequentially slide out of the corresponding unlocking key grooves to enable the lock core 2 to be linked with each blade 11, when the lock is abnormally unlocked by using a universal key or other tools, because each blade is provided with a plurality of restricting grooves 23, the auxiliary unlocking key 5 can easily enter one restricting groove 23, but the main unlocking key 4 can not smoothly enter the corresponding main groove 16 in the rotation process of the lock core 2, therefore, the lock core 2 is locked and can not rotate, and the anti-theft purpose is realized.
Although the structure can achieve the purpose of theft prevention, the structure cannot be suitable for a lock head with small volume and does not have the idling function.
Therefore, the existing anti-theft lock head structure has the need of improvement.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a have idle running function, reinforcing theftproof performance to be applicable to the pickproof lock tapered end of the second grade locking structure of small volume.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the anti-theft lock head with a secondary locking structure comprises a shell, a lock core, a main unlocking piece and an auxiliary unlocking piece; the inner wall of the shell is respectively provided with a main groove and an auxiliary groove along the axial direction of the shell; the lock core is arranged in the shell, a plurality of blades are arranged in the lock core in parallel in a manner of being vertical to the axial direction of the lock core, and a first key groove and a second key groove are formed in the peripheral wall of the lock core corresponding to the main groove and the auxiliary groove; the edge of each blade is respectively provided with a main groove and an auxiliary groove, and one or more restriction grooves are formed in one side or two sides of the auxiliary groove of the edge of each blade; the main unlocking piece is provided with an inner clamping key and an outer clamping key; in a locking state, the outer clamping key is positioned in the main groove, the inner clamping key is positioned in the first key groove, the auxiliary unlocking piece is positioned in the auxiliary groove and the second key groove at the same time, and the lock cylinder is connected with the shell; when the lock is unlocked, the auxiliary unlocking piece is firstly separated from the shell and falls into the auxiliary groove of the same blade, and then the outer clamping key is separated from the shell to jack the inner clamping key into the main groove; when the auxiliary unlocking piece is separated from the shell and falls into any restriction groove of one blade, and the outer clamping key cannot be separated from the shell to jack the inner clamping key into the main groove of the same blade, the outer clamping key is detained in the main groove, the inner clamping key completely falls into the first key groove, and the lock cylinder and the shell can rotate relatively to be in an idling state.
The utility model has the advantages that: has the idle running function and stronger anti-theft performance, and is suitable for small volume.
The utility model discloses the accessible improves with following scheme:
the lock core is provided with a return spring corresponding to each blade, the insertion of a key can enable each blade to overcome the action of the return spring to enable each main groove and each auxiliary groove to be in a straight line shape, and when the lock is unlocked, the auxiliary unlocking piece and the main unlocking piece respectively fall into the straight auxiliary groove and the straight main groove formed by each blade.
The projection of the auxiliary groove on a section vertical to the central axis of the shell is triangular or trapezoidal, and the bottom edge of the triangle or the lower bottom of the trapezoid is close to one side of the lock cylinder.
The auxiliary unlocking piece comprises an unlocking piece body and two auxiliary unlocking balls; two ends of the unlocking sheet body are provided with abutting gaps, the unlocking sheet body is inserted on the lock cylinder, and an auxiliary unlocking spring is arranged between the unlocking sheet body and the lock cylinder; two auxiliary grooves are arranged on the inner wall of the shell corresponding to the propping gap; the two auxiliary unlocking balls are respectively arranged on the abutting notch, the unlocking sheet body abuts against the two auxiliary unlocking balls and abuts against the corresponding auxiliary grooves under the action of the auxiliary unlocking spring, when the lock cylinder rotates relative to the shell, the auxiliary grooves extrude the auxiliary unlocking balls to leave the auxiliary grooves, and the unlocking sheet body compresses the auxiliary unlocking spring to fall into the auxiliary grooves or the restriction grooves of the blades.
The shell is equipped with and rotates the groove, has a stirring headgear to establish on the lock core and place in rotating the groove, stirs the inner wall of head and offers the third keyway corresponding with first keyway, and outer bayonet lock is formed with the fin that extends along outer bayonet lock length direction, and the fin holding is in the third keyway.
The thickness of the outer clamping key is equal to the depth of the main groove and the depth of the main groove, the depth of the third key groove is larger than the depth of the main groove, and the thickness of the convex rib is larger than the depth of the main groove and smaller than or equal to the depth of the third key groove.
The outer clamping key respectively forms abutting parts at two sides of the convex rib, the shell is symmetrically provided with elastic devices at two sides of the rotating groove, the elastic devices act on the respective abutting parts correspondingly, and when the lock is unlocked, the outer clamping key pushes the inner clamping key into the main groove of the same blade under the action of the elastic devices.
The shell symmetry is provided with along radial extension and the radial hole of twice of intercommunication main slot, and resilient means includes main spheroid of unblanking and main spring of unblanking, and main spring setting of unblanking is in the radial hole that corresponds and main spheroid of unblanking is in main spring of unblanking and corresponding to between the top.
Drawings
Fig. 1 is a schematic three-dimensional state diagram of the overall structure of the anti-theft lock head with a secondary locking structure in the embodiment.
Fig. 2 is a longitudinal sectional view of the pickproof lock cylinder with secondary locking structure in the embodiment (when locked by inserting a key axially through the pickproof lock cylinder with secondary locking structure).
Fig. 3 is an exploded three-dimensional state diagram of the lock head of the anti-theft lock with a secondary locking structure in the embodiment.
Fig. 4 is a sectional view of the pickproof lock cylinder with secondary locking structure in the embodiment (the section is through the axis perpendicular to the pickproof lock cylinder with secondary locking structure, in the locked state).
Fig. 5 is a sectional view of the pickproof lock cylinder with secondary locking structure in the embodiment (the section is taken through a right key inserted in an unlocking state perpendicular to the axial direction of the pickproof lock cylinder with secondary locking structure).
Fig. 6 is another sectional view of the pickproof lock cylinder with secondary locking structure in the embodiment (the section is taken through the unlocking state by inserting the correct key perpendicular to the axial direction of the pickproof lock cylinder with secondary locking structure).
Fig. 7 is a schematic view showing a structure in which the key is twisted to unlock the lock in the state shown in fig. 6.
Fig. 8 is a sectional view of the lock head of the pickproof lock with the secondary locking structure in the embodiment (the section is taken perpendicular to the axial direction of the lock head of the pickproof lock with the secondary locking structure, and the lock head is in an idle state when the lock head is abnormally unlocked by using a master key or other tools).
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and examples
As shown in fig. 1 to 3, the anti-theft lock with a secondary locking structure comprises a shell 1, a lock cylinder 2, a main unlocking member 3 and an auxiliary unlocking member 4, in this embodiment, the anti-theft lock further comprises a toggle head 5, and after the anti-theft lock is installed on a lock body, the toggle head 5 is used for linking an unlocking mechanism of the lock body.
According to the existing mode, the lock core 2 is installed in the shell 1, a plurality of blades 6 are arranged in parallel in the lock core 2 and perpendicular to the axial direction of the lock core 2, the edge of each blade 6 is respectively provided with a main groove 61 and an auxiliary groove 62, and one or more restriction grooves 63 are formed in one side or two sides of the auxiliary groove 62 of the edge of each blade 6; a return spring 71 is arranged in the lock cylinder 2 corresponding to each blade 6, each blade 6 can overcome the action of the return spring 71 to enable each main groove 61 and each auxiliary groove 62 to be in a straight line shape by inserting the key 100, and during unlocking, the auxiliary unlocking piece and the main unlocking piece 3(3, 4) respectively fall into the straight auxiliary groove 62 and the straight main groove 61 formed by each blade 6.
The housing 1 is provided with a rotating groove 11, and a main groove 12 and an auxiliary groove 13 are respectively arranged on the inner wall of the housing 1 along the axial direction of the housing 1. More specifically, the projection of the auxiliary groove 13 on a cross section perpendicular to the central axis of the housing 1 is triangular or trapezoidal, and the bottom side of the triangle or the bottom of the trapezoid is close to one side of the key cylinder 2.
The auxiliary unlocking piece 4 comprises an unlocking piece body 41 and two auxiliary unlocking balls 42; two ends of the unlocking sheet body 41 are provided with abutting notches 411, the unlocking sheet body 41 is inserted on the lock cylinder 2, and an auxiliary unlocking spring 72 is arranged between the unlocking sheet body 41 and the lock cylinder 2; two auxiliary grooves 13 are arranged on the inner wall of the shell 1 corresponding to the propping notch 411; the two auxiliary unlocking balls 42 are respectively placed on the abutting notch 411, the unlocking sheet body 41 abuts against the two auxiliary unlocking balls 42 and abuts against the corresponding auxiliary groove 13 under the action of the auxiliary unlocking spring 72, when the lock cylinder 2 rotates relative to the shell 1, the auxiliary groove 13 extrudes the auxiliary unlocking balls 42 to leave the auxiliary groove 13, and the unlocking sheet body 41 compresses the auxiliary unlocking spring 72 and falls into the auxiliary groove 62 or the restriction groove 63 of the blade 6.
The peripheral wall of the lock cylinder 2 is provided with a first key groove 21 and a second key groove 22 corresponding to the main groove 12 and the auxiliary groove 13.
Primary unlocking member 3 has an inner catch 31 and an outer catch 32.
The toggle head 5 is sleeved on the lock cylinder 2 and is arranged in the rotating groove 11, a third key groove 51 corresponding to the first key groove 21 is formed in the inner wall of the toggle head 5, a protruding rib 321 extending along the length direction of the outer snap key 32 is formed on the outer snap key 32, and the protruding rib 321 is accommodated in the third key groove 51. The thickness of the outer snap key 32 is equal to the depth of the main groove 12 and the depth of the main groove 12, the depth of the third key groove 51 is greater than the depth of the main groove 12, and the thickness of the protruding rib 321 is greater than the depth of the main groove 12 and less than or equal to the depth of the third key groove 51.
The outer snap keys 32 respectively form abutting parts 322 at two sides of the protruding rib 321, the elastic devices 73 are symmetrically arranged at two sides of the rotating groove 11 of the shell 1, the elastic devices 73 correspondingly act on the respective abutting parts 322, and when the lock is unlocked, the outer snap keys 32 push the inner snap keys 31 into the main grooves 61 of the same blade 6 under the action of the elastic devices 73.
The housing 1 is symmetrically provided with two radial holes 14 extending along a radial direction and communicating with the main groove 12, the elastic means 73 includes a main unlocking ball 731 and a main unlocking spring 732, the main unlocking spring 732 is disposed in the corresponding radial hole 14 and the main unlocking ball 731 is between the main unlocking spring 732 and the corresponding abutment portion 322.
In the locked state, as shown in fig. 4, the outer locking member 32 is located in the main groove 12 and the inner locking member 31 is located in the first key groove 21, the auxiliary unlocking member 4 is located in the auxiliary groove 62 and the second key groove 22, and the lock cylinder 2 is connected to the housing 1; during unlocking, as shown in fig. 5 to 7, after the auxiliary unlocking piece 4 is firstly separated from the shell 1 and falls into the auxiliary groove 62 of the same blade 6, the outer clamping key 32 is separated from the shell 1 to push the inner clamping key 31 into the main groove 61; when the secondary unlocking member 4 is separated from the housing 1 and falls into any restriction groove 63 of one blade 6 and the outer catch 32 cannot be separated from the housing 1 to push the inner catch 31 into the main groove 61 of the same blade 6 (i.e. when the master key 101 or other tools are used for abnormal unlocking), the outer catch 32 is retained in the main groove 12 and the inner catch 31 completely falls into the first key groove 21, and the lock cylinder 2 and the housing 1 can rotate relatively to be in an idle state, as shown in fig. 8.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are equivalent replacement modes, and are all included in the scope of the present invention.
Claims (8)
1. The anti-theft lock head with a secondary locking structure comprises a shell, a lock core, a main unlocking piece and an auxiliary unlocking piece; the inner wall of the shell is respectively provided with a main groove and an auxiliary groove along the axial direction of the shell; the lock core is arranged in the shell, a plurality of blades are arranged in the lock core in parallel in a manner of being vertical to the axial direction of the lock core, and a first key groove and a second key groove are formed in the peripheral wall of the lock core corresponding to the main groove and the auxiliary groove; the edge of each blade is respectively provided with a main groove and an auxiliary groove, and one or more restriction grooves are formed in one side or two sides of the auxiliary groove of the edge of each blade; it is characterized in that the main unlocking and locking piece is provided with an inner clamping key and an outer clamping key; in a locking state, the outer clamping key is positioned in the main groove, the inner clamping key is positioned in the first key groove, the auxiliary unlocking piece is positioned in the auxiliary groove and the second key groove at the same time, and the lock cylinder is connected with the shell; when the lock is unlocked, the auxiliary unlocking piece is firstly separated from the shell and falls into the auxiliary groove of the same blade, and then the outer clamping key is separated from the shell to jack the inner clamping key into the main groove; when the auxiliary unlocking piece is separated from the shell and falls into any restriction groove of one blade, and the outer clamping key cannot be separated from the shell to jack the inner clamping key into the main groove of the same blade, the outer clamping key is detained in the main groove, the inner clamping key completely falls into the first key groove, and the lock cylinder and the shell can rotate relatively to be in an idling state.
2. The anti-theft lock head with two-stage locking structure according to claim 1, wherein a return spring is provided in the lock cylinder corresponding to each blade, the insertion of the key enables each blade to overcome the action of the return spring to make each main groove and each auxiliary groove linear, and the auxiliary unlocking member and the main unlocking member fall into the linear auxiliary groove and the linear main groove formed by each blade, respectively, during unlocking.
3. The anti-theft lock cylinder with secondary locking structure according to claim 1, characterized in that the projection of the auxiliary groove on a section perpendicular to the central axis of the housing is triangular or trapezoidal, the bottom of the triangle or the bottom of the trapezoid being close to one side of the lock cylinder.
4. The anti-theft lock cylinder with secondary locking structure according to claim 3, wherein the secondary unlocking member comprises an unlocking blade and two secondary unlocking balls; two ends of the unlocking sheet body are provided with abutting gaps, the unlocking sheet body is inserted on the lock cylinder, and an auxiliary unlocking spring is arranged between the unlocking sheet body and the lock cylinder; two auxiliary grooves are arranged on the inner wall of the shell corresponding to the propping gap; the two auxiliary unlocking balls are respectively arranged on the abutting notch, the unlocking sheet body abuts against the two auxiliary unlocking balls and abuts against the corresponding auxiliary grooves under the action of the auxiliary unlocking spring, when the lock cylinder rotates relative to the shell, the auxiliary grooves extrude the auxiliary unlocking balls to leave the auxiliary grooves, and the unlocking sheet body compresses the auxiliary unlocking spring to fall into the auxiliary grooves or the restriction grooves of the blades.
5. The anti-theft lock head with secondary locking structure as claimed in any one of claims 1 to 4, wherein the housing has a rotation slot, a toggle head is sleeved on the lock core and placed in the rotation slot, the inner wall of the toggle head has a third key slot corresponding to the first key slot, the outer key has a rib extending along the length direction of the outer key, and the rib is received in the third key slot.
6. The anti-theft lock cylinder with secondary locking structure according to claim 5, characterized in that the thickness of the external catch is equal to the depth of the main groove and the depth of the main groove, the depth of the third key groove is greater than the depth of the main groove, and the thickness of the protruding rib is greater than the depth of the main groove and less than or equal to the depth of the third key groove.
7. The anti-theft lock head with two-stage locking structure according to claim 5, wherein the outer locking key forms abutting portions on both sides of the protruding rib, the housing is symmetrically provided with elastic means on both sides of the rotating slot, the elastic means correspondingly act on the respective abutting portions, and when the outer locking key pushes the inner locking key into the main groove of the same blade under the action of the elastic means during unlocking.
8. The anti-theft lock cylinder with secondary locking structure as claimed in claim 7, wherein the shell is symmetrically provided with two radial holes extending along a radial direction and communicating with the main groove, the resilient means comprises a main unlocking ball and a main unlocking spring, the main unlocking spring is disposed in the corresponding radial hole and the main unlocking ball is located between the main unlocking spring and the corresponding abutment portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020511539.4U CN212078954U (en) | 2020-04-09 | 2020-04-09 | Anti-theft lock head with two-stage locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020511539.4U CN212078954U (en) | 2020-04-09 | 2020-04-09 | Anti-theft lock head with two-stage locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212078954U true CN212078954U (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020511539.4U Active CN212078954U (en) | 2020-04-09 | 2020-04-09 | Anti-theft lock head with two-stage locking structure |
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| Country | Link |
|---|---|
| CN (1) | CN212078954U (en) |
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2020
- 2020-04-09 CN CN202020511539.4U patent/CN212078954U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211215 Address after: 528400 7 / F, building D, Yuema Industrial Park, Fuxi, Xiaolan Town, Zhongshan City, Guangdong Province Patentee after: Guangdong Yuema Intelligent Technology Co.,Ltd. Address before: No.35 Guangshan Road, Guangfeng Industrial Park, Longxi, Xiaolan Town, Zhongshan City, Guangdong Province 528400 Patentee before: Li Haoyuan |
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| TR01 | Transfer of patent right |