Lock cylinder type anti-theft lock
By using the abutment structure of the locking positioning tab, fixed shaft, lock hole and return spring in the lock core type anti-theft lock, the problem of low cracking difficulty of traditional mechanical locks is solved, and the difficulty of cracking and anti-theft effect of the anti-theft lock is significantly improved.
Patent Information
- Application Number
- CN202421541842.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Traditional mechanical locks are difficult to crack and have poor anti-theft effect.
A lock core type anti-theft lock is designed, which adopts an abutment structure formed by the clamping tab, a fixed shaft and a lock hole. A return spring is provided between the adjacent clamping tabs. After the pressure is removed, the locking pin is pushed back to its original position by the return spring. The cracker cannot control multiple locking pins at the same time.
It effectively improves the cracking difficulty, so that the locking structures of the lock core and lock shell remain in motion and numerous during the cracking process, enhancing the anti-theft effect.
Smart Images
Figure CN222863095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of anti-theft locks, in particular to a lock core type anti-theft lock. Background Art
[0002] The lock core of a traditional mechanical lock is a structure with pins arranged in an upper and lower row. When thieves try to open the lock core by technology, they first insert a wire into the lock core hole and pull it to rotate to one end, then insert another wire to move the lock pin, which pushes the flat beads out of the locked state through the lock pin. After all the flat beads are out of the locked position, the lock core can be opened. Traditional mechanical locks are easy to crack, but have poor anti-theft effects. Utility Model Content
[0003] In order to solve the above problems, the utility model proposes a lock core type anti-theft lock.
[0004] The technical solution adopted by the utility model is: a lock core type anti-theft lock, comprising a lock shell, a lock hole being provided on the lock shell, a lock core being rotatably connected in the lock hole, a key hole and a plurality of lock pin holes being provided on the lock core, the lock pin holes being respectively located on both sides of the central axis of the lock core, a lock pin being provided in the lock pin hole, a plurality of adjustment grooves and two clamping inclined surfaces being provided on the lock core, the two clamping inclined surfaces being respectively arranged on both sides of the central axis of the lock core, the lock pin hole being connected with the key hole and the clamping inclined surfaces, a fixed shaft being passed through the adjusting groove, a clamping piece group being provided in the adjusting groove, the clamping piece group being rotatably connected to the fixed shaft, the clamping piece group comprising a plurality of staggered clamping pieces, a reset spring being provided between adjacent clamping pieces, a groove being provided at the end of the clamping piece, a positioning shaft being provided in the groove, and the positioning shaft being located between the clamping inclined surface and the inner wall of the lock hole.
[0005] Furthermore, a connecting groove is provided on the locking piece, and a part or all of the bottom end of the locking pin is located in the connecting groove.
[0006] Furthermore, an axial hole is provided at the center of the lock core, the axial hole passes through all the adjustment slots, and the fixed shaft is inserted into the axial hole.
[0007] Furthermore, a positioning part is connected to the rear end of the lock core, a fixing hole connected to the keyhole is provided in the positioning part, a matching hole is provided on the inner wall of the lock hole, a positioning lock pin and a positioning flat ball are provided in the fixing hole and the matching hole, and an ejection spring is provided between the positioning flat ball and the matching hole.
[0008] Furthermore, the engaging inclined surfaces are symmetrically distributed on both sides of the central axis of the lock core.
[0009] Furthermore, the lock pin holes are symmetrically arranged on both sides of the central axis of the lock core.
[0010] Furthermore, a spring groove is provided in the adjusting groove, and the return spring is arranged in the spring groove.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] The locking of the lock core and the lock shell in the utility model is achieved by abutting the locking piece, the fixed shaft and the lock hole. A reset spring is arranged between adjacent locking pieces. During the technical cracking process, the lock pin returns to its original position under the action of the reset spring after the pressure is removed. The cracking personnel cannot control multiple lock pins at the same time. Compared with the traditional mechanical lock, the locking structure of the lock that plays a locking role during the cracking process keeps moving and is numerous, which effectively increases the difficulty of cracking. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0014] Figure 1 It is an exploded schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 3 It is a first cross-sectional schematic diagram of the overall structure of the utility model;
[0017] Figure 4 It is a second cross-sectional schematic diagram of the overall structure of the utility model;
[0018] Figure 5 This is a schematic diagram of the structure of the clamping piece of the utility model;
[0019] Figure 6 This is a schematic diagram of the structure of the utility model in an unlocked state;
[0020] Figure 7 This is a schematic diagram of the unlocking state structure of the utility model;
[0021] Figure 8 This is a first schematic diagram of the anti-theft state structure of the utility model;
[0022] Fig. 9 This is a second schematic diagram of the anti-theft state structure of the utility model;
[0023] Fig.10 This is a schematic diagram of the lock core structure of the utility model;
[0024] The utility model number information is as follows:
[0025] 1. Lock housing; 11. Lock hole; 12. Matching hole; 121. Positioning bead; 122. Ejection spring; 2. Lock core; 21. Key hole; 22. Latch hole; 221. Latch; 23. Positioning part; 231. Fixing hole; 232. Positioning latch; 24. Adjusting groove; 241. Spring groove; 25. Clamping bevel; 26. Fixed shaft; 27. Clamping piece; 271. Groove; 272. Positioning shaft; 273. Connecting groove; 28. Reset spring; 29. Shaft hole;
[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0029] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0030] See also Figure 1-3The utility model provides a lock core 2 type anti-theft lock, including a lock shell 1, a lock hole 11 is provided on the lock shell 1, a lock core 2 is rotatably connected in the lock hole 11, a key hole 21 and a plurality of lock pin holes 22 are provided on the lock core 2, the lock pin holes 22 are respectively located on both sides of the central axis of the lock core 2, a lock pin 221 is provided in the lock pin hole 22, a plurality of adjustment grooves 24 and two clamping inclined surfaces 25 are provided on the lock core 2, the two clamping inclined surfaces 25 are respectively provided on both sides of the central axis of the lock core 2, the lock pin hole 22 is connected to the key hole 21 and a plurality of lock pin holes 22 are provided in the lock pin hole 22, and the lock core 2 has a plurality of adjustment grooves 24 and two clamping inclined surfaces 25. The two clamping inclined surfaces 25 are respectively provided on both sides of the central axis of the lock core 2. The keyhole 21 and the engaging inclined surface 25, the adjusting groove 24 is provided with a fixed shaft 26, the adjusting groove 24 is provided with a group of engaging pieces 27, the engaging pieces 27 group are rotatably connected to the fixed shaft 26, the engaging pieces 27 group include a plurality of staggered engaging pieces 27, and a return spring 28 is provided between adjacent engaging pieces 27, a groove 271 is provided at the end of the engaging piece 27, a positioning shaft 272 is provided in the groove 271, and the positioning shaft 272 is located between the engaging inclined surface 25 and the inner wall of the lock hole 11.
[0031] The anti-theft principle of this lock is as follows: Figure 6 This is the locked state of the lock when the key is not inserted. It can be seen that the two staggered locking pieces 27 in the adjustment slot 24 are opened to both sides under the action of the return spring 28, and the positioning shaft 272 is against the locking bevel 25 and the inner wall of the lock hole 11. At this time, no matter which side the lock core 2 rotates, it will be blocked by the positioning shaft 272, so that the lock core 2 is in a normal locked state. Figure 7 shows the state of the lock with an adapter key inserted. It can be seen that the lock pins 221 of different lengths move downward under the action of the key, and the locking piece 27 is pushed to rotate by the lock pin 221, and the positioning shaft 272 is pushed to the specified position through the locking piece 27. At this time, the positions of the key, lock pin 221, locking piece 27, lock core 2, and positioning shaft 272 remain relatively fixed, and the positioning shaft 272 does not have a locking effect, and the lock core 2 can rotate normally to unlock; Figure 8 This is the state of the lock when it is technically unlocked. When cracking, the technical unlocking personnel need to press the lock pin down to the lowest position, and then rotate the lock core 2 left and right to test the accurate position. However, the unlocking personnel can only adjust one lock pin 221 at a time. The lock pin in the traditional door lock will not move up and down after adjustment. However, in the present lock, after the force applied to the lock pin 221 is removed, the return spring 28 will push the locking piece 27 to rotate upward, and push the lock pin 221 back to the initial position, so that the positioning shaft 272 is again abutted between the locking inclined surface 25 and the inner wall of the lock hole 11. In addition, the space in the lock core hole is small, and the cracking personnel cannot perform positioning operations on multiple lock pins 221 at the same time, which greatly increases the difficulty of cracking the present lock. Figure 8 , 9When the wrong key is inserted, the teeth on the key may push the longer lock pin 221 to the top, or may not contact the shorter lock pin 221. In both cases, the positioning shaft 272 will rotate or remain in the abutment position. The lock pins 221 of different lengths are arranged on both sides of the lock core 2, so that the above-mentioned abutment state appears on both sides of the lock core 2, thereby locking the lock core 2.
[0032] like Figure 5 As shown, a connecting groove 273 is provided on the locking piece 27. Depending on the downward movement length of the locking pin 221, the bottom end of the locking pin 221 may be partially or completely located in the connecting groove 273. The connecting groove 273 can prevent the locking pin 221 from sliding when contacting the locking piece 27.
[0033] like Figure 1 As shown, an axial hole 29 is provided at the center of the lock core 2 , the axial hole 29 passes through all the adjustment slots 24 , and the fixed shaft 26 is inserted into the axial hole 29 .
[0034] like Figure 4 , Fig.10 As shown, the rear end of the lock core 2 is connected to a positioning portion 23, and a fixing hole 231 connected to the key hole 21 is provided in the positioning portion 23, and a matching hole 12 is provided on the inner wall of the lock hole 11, and a positioning lock pin 232 and a positioning flat bead 121 are provided in the fixing hole 231 and the matching hole 12, and an ejection spring 122 is provided between the positioning flat bead 121 and the matching hole 12, and the structural principle of this part is the same as that of a traditional pin mechanical lock. The anti-theft performance of the lock is improved by combining lock cores 2 with different structures.
[0035] Preferably, the engaging bevel 25 and the lock pin hole 22 are symmetrically distributed on both sides of the central axis of the lock core 2 .
[0036] like Fig.10 As shown, a spring slot 241 is provided in the adjusting slot 24 , and the return spring 28 is provided in the spring slot. The spring slot 241 is used to limit the relative position of the return spring 28 .
[0037] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A lock core type anti-theft lock, comprising a lock shell, a lock hole is provided on the lock shell, a lock core is rotatably connected in the lock hole, a key hole and a plurality of lock pin holes are provided on the lock core, the lock pin holes are respectively located on both sides of the central axis of the lock core, and a lock pin is provided in the lock pin hole, characterized in that: The lock core is provided with a plurality of adjustment grooves and two clamping inclined surfaces, and the two clamping inclined surfaces are respectively arranged on both sides of the central axis of the lock core, the lock pin hole is connected to the key hole and the clamping inclined surface, a fixed shaft is passed through the adjustment groove, a clamping piece group is provided in the adjustment groove, and the clamping piece group is rotatably connected to the fixed shaft, the clamping piece group includes a plurality of staggered clamping pieces, and a reset spring is provided between adjacent clamping pieces, a groove is provided at the end of the clamping piece, a positioning shaft is provided in the groove, and the positioning shaft is located between the clamping inclined surface and the inner wall of the lock hole.
2. A cylinder anti-theft lock according to claim 1, characterized in that: The locking piece is provided with a connecting groove, and the bottom end of the locking pin is partially or completely located in the connecting groove.
3. A cylinder-type anti-theft lock according to claim 1, characterized in that: An axial hole is arranged at the center of the lock core, the axial hole passes through all the adjustment slots, and the fixed shaft is inserted into the axial hole.
4. A cylinder-type anti-theft lock according to claim 1, characterized in that: A positioning part is connected to the rear end of the lock core, a fixing hole connected to the keyhole is provided in the positioning part, a matching hole is provided on the inner wall of the lock hole, a positioning lock pin and a positioning flat ball are provided in the fixing hole and the matching hole, and an ejection spring is provided between the positioning flat ball and the matching hole.
5. A cylinder-type anti-theft lock according to claim 1, characterized in that: The engaging inclined surfaces are symmetrically distributed on both sides of the central axis of the lock core.
6. A cylinder-type anti-theft lock according to claim 1, characterized in that: The lock pin holes are symmetrically arranged on both sides of the central axis of the lock core.
7. A cylinder-type anti-theft lock according to claim 1, characterized in that: A spring slot is arranged in the adjusting slot, and the return spring is arranged in the spring slot.