Lock cylinder structure and blade lock

Abstract

The utility model provides a lock cylinder structure and vane lock, lock cylinder structure includes vane group, drive shaft and locking pin, vane group includes first gear set and second gear set, first gear set includes first driving gear and first driven gear of interlock, is equipped with first key hole to first driving gear, is equipped with first pin groove to first driven gear, second gear set includes second driving gear and second driven gear of interlock, is equipped with second key hole to second driving gear, is equipped with second pin groove to second driven gear, drive shaft passes through first driven gear and second driven gear and carries out linkage, drive shaft is equipped with accommodating pin groove, in the unlocking position of vane group, locking pin can be connected with first pin groove, second pin groove, accommodating pin groove key bond, first push block and / or second push block can promote drive shaft rotation, the central angle between first key hole, second key hole is present preset angle. Vane lock is equipped with above -mentioned lock cylinder structure, makes it reliable, security is high and drive is smooth.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a lock cylinder structure and a leaf lock equipped with the lock cylinder structure. Background Technology

[0002] Traditional wafer locks operate on the principle of precisely matching the angles of the key teeth with the wafers within the lock cylinder structure. A straight groove is formed by aligning the angles of the pin slots on the wafers, allowing the locking pin to move from the outside of the rotating shell into the rotating shell and then into the straight groove to unlock. Because the lock cylinder shell and rotating shell of existing wafer locks are manufactured using die casting, the cavity design of the shell and rotating shell must have a draft angle (i.e., the cavity is frustum-shaped) to prevent excessive resistance during demolding, which could cause deformation or damage to the shell and rotating shell. However, this process characteristic leads to inconsistent gaps around each wafer, resulting in the following problems: After assembly, the circumferential and radial clearances of each blade are unevenly distributed along the axial direction. This results in a significant increase in clearance near the end with a larger draft angle, posing a risk that the locking pin may move into the inner side of the rotating housing when not unlocked. Consequently, the rotating housing may rotate without being unlocked, reducing the security and reliability of the blade lock. Secondly, when the key is inserted, the inconsistent clearances around the blades cause the rotating housing to rotate unevenly. Utility Model Content

[0003] To address the aforementioned problems, the main objective of this invention is to provide a lock cylinder structure that is highly secure, highly reliable, has smooth operation, and is economical.

[0004] Another objective of this invention is to provide a leaf lock with the above-described lock cylinder structure.

[0005] To achieve the main objective of this utility model, a lock cylinder structure is provided, comprising a blade assembly, a drive shaft, and a locking pin. The blade assembly has an unlocked position and an initial locked position, and includes a first gear assembly and a second gear assembly. The first gear assembly includes a first driving gear and a first driven gear meshing with each other. The first driving gear has a first keyhole, and the first driven gear has a first shaft hole. The wall of the first shaft hole has a first lever and a first pin groove distributed circumferentially. The second gear assembly includes a second driving gear and a second driven gear meshing with each other. The second driving gear has a second keyhole, and the second driven gear has a second keyhole. The shaft hole has a second paddle and a second pin groove distributed circumferentially on its wall. The drive shaft has a receiving pin groove and a fan ring groove distributed circumferentially. The drive shaft passes through the first shaft hole and the second shaft hole. The first paddle and the second paddle are both movably disposed in the fan ring groove. In the unlocked position, the locking pin can be keyed to the first pin groove, the second pin groove, and the receiving pin groove. The first paddle and / or the second paddle can drive the drive shaft to rotate. The central angle between the first key hole and the second key hole is at a preset angle. In the initial locked position, the first pin groove and the second pin groove are offset from the receiving pin groove. The locking pin is located in the receiving pin groove, and the first key hole and the second key hole are aligned.

[0006] As can be seen from the above, the drive shaft is used to support the driven gear of the gear set, so that the coaxiality of each driven gear can be ensured only by limiting components (such as guide plates), and the fitting accuracy between the pin groove, the receiving pin groove, and the locking pin can be ensured, so as to accurately realize the engagement and disengagement of the drive shaft and the driven gear, thereby realizing the unlocking and locking processing of the lock cylinder structure. In addition, based on the machining characteristics of the drive shaft and gears, the fitting accuracy between the pin groove, the receiving pin groove, and the locking pin is high and is not affected by the draft angle of the lock cylinder shell, thereby improving the reliability and security of locks with this lock cylinder structure. Furthermore, the transmission characteristics of the gear set ensure that even if the gaps between each driving gear and the lock cylinder shell are inconsistent, the gear set can still maintain high transmission reliability and smooth rotation, avoiding jamming during the unlocking process.

[0007] A further embodiment includes a third gear set, comprising a third driving gear and a third driven gear meshing with each other. The third driving gear has a third keyhole, and the third driven gear has a third shaft hole. The wall of the third shaft hole has a third lever and a third pin groove distributed circumferentially. The drive shaft also passes through the third shaft hole, and the third lever is movably mounted in the fan ring groove. In the unlocked position, the locking pin can also be keyed to the third pin groove, and the third lever can drive the drive shaft to rotate. The central angle between the third keyhole and the first keyhole is twice the preset angle. In the initial locked position, the third pin groove is offset from the receiving pin groove, and the third keyhole is aligned with the first keyhole.

[0008] As can be seen from the above, adding a third gear set can improve the anti-theft performance of the lock cylinder structure and further enhance its security.

[0009] In a preferred embodiment, the lock cylinder structure further includes a guide plate, which includes a clearance ring and a guide support. The first drive gear, the second drive gear, and the third drive gear are distributed along the axial direction of the clearance ring. The guide support is provided with a through hole and a guide groove. The end of the drive shaft is rotatably connected to the through hole, and the end of the locking pin is located in the guide groove. Along the unlocking rotation direction of the drive shaft, the upstream end of the guide groove is provided with a guide surface.

[0010] As can be seen from the above, the guide plate supports the drive shaft, ensuring the rotational accuracy of the drive shaft. The guide groove helps the locking pin engage with the pin groove and receiving pin groove in the unlocked position, ensuring the reliability of the engagement between the locking pin, pin groove, and receiving pin groove. At the same time, the guide groove can also help the locking pin reliably move from the unlocked position to the unlocked position (i.e., along the unlocking rotation direction of the drive shaft, at the downstream end of the guide groove), improving the unlocking reliability. It also helps the locking pin move from the unlocked position to the upstream end of the guide groove and move the locking pin into the receiving pin groove, ensuring that the pin groove and the locking pin disengage, thereby improving the locking reliability.

[0011] A further option is to include an elastic element in the lock cylinder structure, which is located between the locking pin and the drive shaft. The elastic element forces the locking pin to move toward the inlet and outlet of the receiving groove.

[0012] As can be seen from the above, the elastic element can improve the reliability of the locking pin engaging with the pin groove in the unlocked and unlocked positions, thereby enabling the drive shaft and the driven gear to rotate synchronously.

[0013] Another preferred embodiment is that the first driven gear is provided with a second pin groove, the first pin groove is located between the second pin groove and the first shift block, and the central angle between the second pin groove and the first pin groove is a preset angle; or the first driven gear is provided with a third pin groove, the first pin groove is located between the third pin groove and the first shift block, and the central angle between the third pin groove and the first pin groove is twice the preset angle.

[0014] As can be seen from the above, the design enables the lock cylinder structure to achieve hierarchical management, thereby allowing the lock cylinder structure to be adapted to keys of different management levels, improving the practicality and functionality of the lock cylinder structure and the leaf lock equipped with this lock cylinder structure.

[0015] A further embodiment is that the first driving gear is provided with a first involute limiting part; in the unlocked position, when the first driven gear is engaged with the locking pin by the first pin groove, in the unlocked position of the blade assembly, the first involute limiting part meshes with the first driven gear.

[0016] As can be seen from the above, the first involute limiting part can improve the anti-theft and security of the lock cylinder structure, and increase the difficulty for non-compatible keys / tools to unlock the lock by driving the gear sets one by one.

[0017] Another preferred embodiment is that the second driven gear is provided with a third pin groove, the second pin groove is located between the third pin groove and the second shift block, and the central angle between the third pin groove and the second pin groove is a preset angle.

[0018] As can be seen from the above, this design enables the lock cylinder structure to achieve hierarchical management, thereby allowing the lock cylinder structure to be adapted to keys of different management levels, improving the practicality and functionality of the lock cylinder structure and the blade lock equipped with this lock cylinder structure.

[0019] A further embodiment is that the second driving gear is provided with a second involute limiting part; in the unlocked position, when the second driven gear is engaged with the locking pin by the second pin groove, in the unlocked position of the blade assembly, the second involute limiting part meshes with the second driven gear.

[0020] As can be seen from the above, the second involute limiting part can improve the anti-theft and security of the lock cylinder structure, and increase the difficulty for non-compatible keys / tools to unlock the lock by driving the gear sets one by one.

[0021] A further proposed solution is that the third driving gear is equipped with a third involute limiting part, which meshes with the third driven gear in the unlocked position of the blade assembly.

[0022] As can be seen from the above, this design can further enhance the anti-theft and security of the lock cylinder structure, and increase the difficulty for non-compatible keys / tools to unlock the lock by driving the gear sets one by one.

[0023] To achieve another objective of this utility model, this utility model provides a leaf lock, which includes the lock cylinder structure described above.

[0024] As can be seen from the above, the blade lock has higher security and reliability by setting the lock cylinder structure described above. Attached Figure Description

[0025] Figure 1 This is a cross-sectional view of the first embodiment of the leaf lock of this utility model.

[0026] Figure 2 This is a structural diagram from a first-view perspective of the lock cylinder structure of the first embodiment of the leaf lock of this utility model when the leaf assembly is in the initial locked position.

[0027] Figure 3 This is a structural diagram from a second perspective of the first embodiment of the leaf lock of this utility model, showing the leaf assembly of the lock cylinder structure in the initial locked position.

[0028] Figure 4This is a structural diagram of the first embodiment of the leaf lock of this utility model, showing the leaf assembly of the lock cylinder structure in the initial locked position with some components omitted.

[0029] Figure 5 This is a structural diagram of the lock cylinder structure of the first embodiment of the leaf lock of this utility model when the leaf assembly is in the unlocked position.

[0030] Figure 6 This is a structural diagram of the first embodiment of the leaf lock of this utility model, showing the leaf assembly of the lock cylinder structure in the unlocked position with some components omitted.

[0031] Figure 7 This is a structural diagram of the first embodiment of the leaf lock of this utility model, showing the leaf assembly of the lock cylinder structure in the unlocked position with some components omitted.

[0032] Figure 8 This is a reference diagram showing the meshing state of the first gear group when the blade group of the lock cylinder structure of the first embodiment of the blade lock of this utility model is in the unlocked position.

[0033] Figure 9 This is a reference diagram showing the meshing state of the second gear set when the blade assembly of the lock cylinder structure in the first embodiment of the blade lock of this utility model is in the unlocked position.

[0034] Figure 10 This is a reference diagram showing the meshing state of the third gear set when the blade assembly of the lock cylinder structure in the first embodiment of the blade lock of this utility model is in the unlocked position.

[0035] Figure 11 This is a structural diagram of the drive shaft of the lock cylinder structure in the first embodiment of the leaf lock of this utility model.

[0036] Figure 12 This is a structural diagram of the guide plate of the lock cylinder structure in the first embodiment of the leaf lock of this utility model.

[0037] Figure 13 This is a reference diagram showing the meshing state of the first gear group when the blade group of the lock cylinder structure in the second embodiment of the blade lock of this utility model is in the unlocked position.

[0038] Figure 14 This is a reference diagram showing the meshing state of the first gear group when the blade group of the lock cylinder structure in the third embodiment of the blade lock of this utility model is in the unlocked position.

[0039] Figure 15 This is a reference diagram showing the meshing state of the second gear set when the blade assembly of the lock cylinder structure in the fourth embodiment of the blade lock of this utility model is in the unlocked position.

[0040] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0041] First embodiment of leaf lock Reference Figure 1 This embodiment uses a leaf lock 100 as an example of a padlock to provide an auxiliary explanation of the lock cylinder structure 10. It is understood that the leaf lock 100 can also be other types of locks, such as door locks. The leaf lock 100 includes a lock cylinder housing 101, a lock cylinder structure 10, etc. The lock cylinder housing 101 has a cavity for accommodating the lock cylinder structure 10.

[0042] Combination Figures 2 to 7 The lock cylinder structure 10 includes a blade assembly 1, a drive shaft 2, a locking pin 3, and a guide plate 4; wherein, depending on the position of the blade assembly 1, the blade assembly 1 has an initial locking position (e.g., ...). Figures 2 to 4 As shown), unlock location (such as...) Figure 5 , Figure 6 ) and unlock position (such as Figure 7 (As shown).

[0043] In this embodiment, to enhance the anti-theft performance of the lock cylinder structure 10 and further improve its security, the blade assembly 1 includes three sets of gears with different meshing states: a first gear set 11, a second gear set 12, and a third gear set 13. However, it is understood that in other embodiments, the blade assembly 1 may also include two or more sets of gears with different meshing states. The more gears with different meshing states, the stronger the anti-theft performance of the lock cylinder structure 10.

[0044] Combination Figure 8 The first gear set 11 includes a first driving gear 111 and a first driven gear 112, which mesh with each other. The first driving gear 111 has a first keyhole 1111 to engage with the corresponding teeth on the key, so that the key can drive the first driving gear 111 to rotate, which in turn drives the first driven gear 112 to rotate, and finally cooperates with other gear sets to drive the transmission shaft 2 to rotate to unlock.

[0045] The first driven gear 112 has a first shaft hole 1121. The wall of the first shaft hole 1121 has a first lever 1122 and a first pin groove 1123. The first lever 1122 and the first pin groove 1123 are distributed circumferentially along the first shaft hole 1121 and along the unlocking rotation direction of the first driven gear 112 (i.e., the direction of rotation from the unlocked position to the unlocked position). The first lever 1122 is located upstream of the first pin groove 1123. The first lever 1122 protrudes towards the axis of the first shaft hole 1121, while the first pin groove 1123 protrudes away from the axis of the first shaft hole 1121. The first pin groove 1123 is used to cooperate with the locking pin 3 and the receiving pin groove 21 of the drive shaft 2 to drive the drive shaft 2 to rotate from the unlocked position to the unlocked position.

[0046] Combination Figure 9 The second gear set 12 includes a second driving gear 121 and a second driven gear 122, which mesh with each other. The second driving gear 121 has a second keyhole 1211 to engage with a corresponding tooth on the key, allowing the key to drive the second driving gear 121 to rotate, which in turn drives the second driven gear 122 to rotate, ultimately engaging with other gear sets to drive the transmission shaft 2 to unlock. The second driving gear 121 is substantially coaxial with the first driving gear 111; in the initial locked position of the blade set 1, the second keyhole 1211 is aligned with the first keyhole 1111 (see 2 to 3). Figure 4 In the unlocked position of the blade group 1, the central angle between the first keyhole 1111 and the second keyhole 1211 is a preset angle α. Similarly, in the unlocked position of the blade group 1, the central angle between the first keyhole 1111 and the second keyhole 1211 is a preset angle α.

[0047] In this embodiment, the second driven gear 122 has the same structure as the first driven gear 112, that is, the second driven gear 122 is provided with a second shaft hole 1221, wherein the wall of the second shaft hole 1221 is provided with a second lever 1222 and a second pin groove 1223. The second lever 1222 and the second pin groove 1223 are distributed circumferentially along the second shaft hole 1221 and along the unlocking rotation direction of the second driven gear 122 (that is, the direction of rotation from the unlocked position to the unlocked position, which is consistent with the unlocking rotation direction of the first driven gear 112). The second lever 1222 is located at the upstream end of the second pin groove 1223. The second lever 1222 protrudes towards the axis of the second shaft hole 1221, while the second pin groove 1223 protrudes away from the axis of the second shaft hole 1221. The second pin groove 1223 is used to cooperate with the locking pin 3 and the receiving pin groove 21 of the transmission shaft 2 to drive the transmission shaft 2 to rotate from the unlocked position to the unlocked position.

[0048] Combination Figure 10 The third gear set 13 includes a third driving gear 131 and a third driven gear 132, which mesh with each other. The third driving gear 131 has a third keyhole 1311, which engages with a corresponding tooth on the key, allowing the key to drive the third driving gear 131 to rotate, thereby driving the third driven gear 132 to rotate, and finally, in conjunction with other gear sets, driving the transmission shaft 2 to rotate to unlock. The third driving gear 131 and the first driving gear 111 are substantially coaxial; in the initial locked position of the blade set 1, the third keyhole 1311 aligns with the first keyhole 1111 (see 2 to 3). Figure 4In the unlocked position of the blade group 1, the central angle between the first keyhole 1111 and the third keyhole 1311 is twice the preset angle a (i.e., 2a). Similarly, in the unlocked position of the blade group 1, the central angle between the first keyhole 1111 and the third keyhole 1311 is twice the preset angle a.

[0049] In this embodiment, the third driven gear 132 has the same structure as the first driven gear 112, that is, the third driven gear 132 is provided with a third shaft hole 1321, wherein the third shaft hole 1321 is provided with a third lever 1322 and a third pin groove 1323. The third lever 1322 and the third pin groove 1323 are distributed circumferentially along the third shaft hole 1321 and along the unlocking rotation direction of the third driven gear 132 (that is, the direction of rotation from the unlocked position to the unlocked position, which is consistent with the unlocking rotation direction of the first driven gear 112). The second lever 1222 is located at the upstream end of the third pin groove 1323. The third lever 1322 protrudes towards the axis of the third shaft hole 1321, while the third pin groove 1323 protrudes away from the axis of the third shaft hole 1321. The third pin groove 1323 is used to cooperate with the locking pin 3 and the receiving pin groove 21 of the transmission shaft 2 to drive the transmission shaft 2 to rotate from the unlocked position to the unlocked position.

[0050] It is understandable that, since the first keyhole 1111, the second keyhole 1211, and the third keyhole 1311 are aligned at the initial locked position, and the first driven gear 112, the second driven gear 122, and the third driven gear 132 have the same structure; therefore, at the initial locked position, the first pin groove 1123, the second pin groove 1223, and the third pin groove 1323 are staggered from each other, and the first lever 1122, the second lever 1222, and the third lever 1322 are also staggered from each other. That is, in the initial locked position, along the unlocking rotation direction of the driven gear, the second pin groove 1223 is located between the first pin groove 1123 and the third pin groove 1323, and the third pin groove 1323 is located at the downstream end; the second lever 1222 is located between the first lever 1122 and the third lever 1322, and the third lever 1322 is located at the downstream end; and the central angle between the first pin groove 1123 and the second pin groove 1223, and the central angle between the first lever 1122 and the second lever 1222 are all at a preset angle α, and the central angle between the first pin groove 1123 and the third pin groove 1323, and the central angle between the first lever 1122 and the third lever 1322 are all at twice the preset angle α.

[0051] Combination Figure 11The drive shaft 2 is provided with a pin receiving groove 21 and a fan-shaped ring groove 22 (meaning its cross-section is approximately fan-shaped). The pin receiving groove 21 and the fan-shaped ring groove 22 are distributed circumferentially along the drive shaft 2, and extend axially along the drive shaft 2 and penetrate the drive shaft 2. The pin receiving groove 21 is used to receive the locking pin 3, and the locking pin 3 cooperates with the pin grooves on each driven gear to realize the clutch drive of the driven gear on the drive shaft 2. The drive shaft 2 passes through the first shaft hole 1121, the second shaft hole 1221 and the third shaft hole 1321, and the first shift block 1122, the second shift block 1222 and the third shift block 1322 are all movably disposed in the fan-shaped ring groove 22, so that during the process of the driven gear rotating from the initial locked position to the unlocked position, each shift block can rotate relative to the drive shaft 2. The drive shaft 2 is prevented from rotating; and during the process of the driven gear rotating from the unlock position to the unlock position, the driven gear can drive the drive shaft 2 to rotate synchronously through the keying of the locking pin 3 with each pin groove and the receiving pin groove 21; that is, in the unlock position, the locking pin 3 is keyed to the first pin groove 1123, the second pin groove 1223, the third pin groove 1323 and the receiving pin groove 21, and the first lever 1122, the second lever 1222 and the third lever 1322 can push the drive shaft 2 to rotate towards the unlock position.

[0052] Furthermore, the drive shaft 2 has shaft portions 23 at both axial ends to cooperate with guide plates 4, allowing the drive shaft 2 to rotate relative to and be supported by the guide plates 4. One shaft portion 23 of the drive shaft 2 is also provided with a linkage portion 24, which can serve as a cam for driving the locking rod 102; or cooperate with the cam component 103 to drive the locking rod 102.

[0053] Combination Figure 12The guide plate 4 includes a clearance ring portion 41 and a guide support portion 42. The first drive gear 111, the second drive gear 121, and the third drive gear 131 are distributed axially along the clearance ring portion 41, which provides space for the key to pass through. The guide support portion 42 has a through hole 421 and a guide groove 422. The through hole 421 is used for the rotational engagement of the shaft portion 23 of the drive shaft 2, supporting the drive shaft 2 and ensuring its rotational accuracy. It also prevents the rotation of the drive shaft 2 and each driven gear from being affected by the draft angle of the lock cylinder housing 101. The guide groove 422 extends along the unlocking rotation direction of the driven gear and along the unlocking rotation direction of the driven gear (i.e., the unlocking rotation direction of the drive shaft 2). The upstream end of the guide groove 422 is provided with a guide surface 4221. The end of the locking pin 3 is located in the guide groove 422. The guide surface 4221 is used to guide the locking pin 3, so that the locking pin 3 can move better towards the inlet and outlet of the receiving pin groove 21, thereby making the locking pin 3 engage with the pin groove on each driven gear at the position. When the driven gear rotates to the unlocking position, it ensures that the locking pin 3 moves into the pin groove of each driven gear, assisting the locking pin 3 to reliably move from the unlocking position to the unlocking position, thereby improving the unlocking reliability. In addition, when the key is removed after locking, the guide groove 422 can also assist the locking pin 3 to move from the unlocking position to the upstream end of the guide groove 422 and move the locking pin 3 into the receiving pin groove 21, ensuring that the pin groove and the locking pin 3 are disengaged, thereby improving the locking reliability.

[0054] To improve the reliability of the locking pin 3 engaging with the pin groove in the unlocked and unlocked positions, thereby enabling the drive shaft 2 and the driven gear to rotate synchronously, the lock cylinder structure 10 may also be provided with an elastic element 5. The elastic element 5 is located between the locking pin 3 and the drive shaft 2 to force the locking pin 3 to move towards the inlet and outlet of the receiving pin groove 21. The elastic element 5 is preferably a compression spring. A limiting hole may be provided at the bottom of the receiving pin groove 21 to accommodate part of the compression spring. On the one hand, it provides space for the spring to be compressed, and on the other hand, it limits the compression spring.

[0055] Furthermore, the first driving gear 111 is provided with a first involute limiting part 1112; when the blade assembly 1 is in the unlocked position, the first involute limiting part 1112 meshes with the first driven gear 112 (e.g., Figure 8 As shown), this restricts the first driven gear 112 from continuing to rotate in the unlocking rotation direction, and also restricts the first driving gear 111 from rotating in the opposite direction along the unlocking rotation direction of the first driven gear 112.

[0056] Similarly, the second driving gear 121 is provided with a second involute limiting part 1212; when the blade group 1 is in the unlocked position, the second involute limiting part 1212 meshes with the second driven gear 122 (e.g., Figure 9As shown), this restricts the second driven gear 122 from continuing to rotate in the unlocking rotation direction, and also restricts the second driving gear 121 from rotating in the opposite direction along the unlocking rotation direction of the second driven gear 122.

[0057] Similarly, the third driving gear 131 is provided with a third involute limiting part 1312; when the blade group 1 is in the unlocked position, the third involute limiting part 1312 meshes with the third driven gear 132 (e.g., Figure 10 As shown), this restricts the third driven gear 132 from continuing to rotate in the unlocking rotation direction, and also restricts the third driving gear 131 from rotating in the opposite direction along the unlocking rotation direction of the third driven gear 132.

[0058] The first involute limiting part 1112, the second involute limiting part 1212, and the third involute limiting part 1312 can improve the anti-theft and security of the lock cylinder structure 10 and increase the difficulty for non-compatible keys / tools to unlock by driving the gear sets one by one.

[0059] The following is a brief description of the unlocking process of the lock cylinder structure 10: In the locked state, blade group 1 is in the initial locked position, such as... Figures 2 to 4 As shown, at this time, the first keyhole 1111, the second keyhole 1211, and the third keyhole 1311 are aligned, and the first pin groove 1123, the second pin groove 1223, the third pin groove 1323, and the receiving pin groove 21 are offset from each other. Then, the key is inserted into the first keyhole 1111, the second keyhole 1211, and the third keyhole 1311, and rotated at a certain angle until the blade assembly 1 is in the unlocked position.

[0060] Because the first drive gear 111, the second drive gear 121, and the third drive gear 131 are adapted to the toothed codes at different positions on the key, when the blade assembly 1 is in the unlocked position, the central angle between the first keyhole 1111 and the second keyhole 1211 is a preset angle α, and the central angle between the first keyhole 1111 and the third keyhole 1311 is twice the preset angle α (this can be understood as the central angles between the first keyhole 1111 and the second keyhole 1211, and between the first keyhole 1111 and the third keyhole 1311, being determined by the positions of the toothed codes on the key). Simultaneously, the first pin groove 1123, the second pin groove 1223, and the third pin groove 1323 are aligned and aligned with the receiving pin groove 21, and the first pin groove 1123, the second pin groove 1223, the third pin groove 1323, and the receiving pin groove 21 are all keyed to the locking pin 3, such as... Figure 5 and Figure 6As shown, at this time, the first lever 1122, the second lever 1222 and the third lever 1322 are all in contact with the side wall of the fan ring groove 22, so that when the driven gear continues to rotate in the unlocking rotation direction, the first lever 1122, the second lever 1222 and the third lever 1322 can drive the transmission shaft 2 to rotate synchronously.

[0061] As the key continues to turn at a certain angle until the first set of blades is in the unlocked position, such as... Figure 7 As shown, during this process, the engagement of the first pin groove 1123, the second pin groove 1223, the third pin groove 1323, the receiving pin groove 21, and the locking pin 3 causes the drive shaft 2 to rotate following each driven gear. At this time, the drive shaft 2 can move the locking rod 102 to unlock. In this state, the central angle between the first keyhole 1111 and the second keyhole 1211 is a preset angle α, and the central angle between the first keyhole 1111 and the third keyhole 1311 is twice the preset angle α.

[0062] It should be noted that the number of the first gear set 11, the second gear set 12, and the third gear set 13 is also set according to the actual situation. At the same time, the order of each first gear set 11, each second gear set 12, and each third gear set 13 can be set according to the actual situation.

[0063] In summary, the design of the lock cylinder structure 10 enables the drive shaft 2 to support the driven gear of the gear set. Simultaneously, the guide plate 4 ensures the coaxiality of each driven gear and guarantees the precision of the fit between the pin groove, the receiving pin groove 21, and the locking pin 3. This allows for precise engagement and disengagement of the drive shaft 2 and the driven gear, thereby enabling the lock cylinder structure 10 to perform unlocking and locking operations. Furthermore, the machining characteristics of the drive shaft 2 and gears ensure high precision in the fit between the pin groove, the receiving pin groove 21, and the locking pin 3, unaffected by the draft angle of the lock cylinder housing 101. This enhances the reliability and security of locks equipped with this lock cylinder structure 10. Moreover, the transmission characteristics of the gear set ensure that even if the clearances between each driving gear and the lock cylinder housing 101 are inconsistent, the gear set maintains high transmission reliability and smooth rotation, preventing jamming during unlocking.

[0064] Second embodiment of the leaf lock Combination Figure 13 The difference between this embodiment and the first embodiment of the leaf lock is that, in this embodiment: The first driven gear 112 is also provided with a second pin groove 1223. The first pin groove 1123 is located between the second pin groove 1223 and the first lever block 1122. The central angle between the second pin groove 1223 and the first pin groove 1123 is a preset angle α.

[0065] In the unlocked position, when the first driven gear 112 is engaged with the locking pin 3 by the first pin groove 1123, in the unlocked position of the blade assembly 1, the first involute limiting part 1112 meshes with the first driven gear 112.

[0066] In the unlocked position, when the first driven gear 112 is engaged with the locking pin 3 by the second pin groove 1223, in the unlocked position of the blade assembly 1, the first involute limiting part 1112 has not yet engaged with the first driven gear 112.

[0067] This design enables the lock cylinder structure 10 to achieve hierarchical management, thereby allowing the lock cylinder structure 10 to be adapted to keys with different management levels, improving the practicality and functionality of the lock cylinder structure 10 and the leaf lock 100 equipped with this lock cylinder structure 10.

[0068] For example, suppose the gear code of the upper key is ①②③①③, and the gear code of the lower key is ②②③②③, where gear code ① corresponds to the first driven gear 112, gear code ② corresponds to the second driven gear 122, and gear code ③ corresponds to the third driven gear 132; then, in order to ensure that the upper key and the lower key can open the same lock cylinder structure 10, the first driven gear 112 of the lock cylinder structure 10 needs to be compatible with gear code ① and gear code ②, that is, the gear code corresponding to the lock cylinder structure 10 is (①, ②)②③(①, ②)③. By setting the first driven gear 112 as described above, the lock cylinder structure 10 can be opened by both the upper key and the lower key.

[0069] When the upper key is used to unlock, in the unlocked position, the first driven gear 112 engages with the locking pin 3 via the first pin groove 1123, and the first driven gear 112 meshes with the first driving gear 111 in the first position. At this time, the first involute limiting part 1112 meshes with the first driven gear 112; see also Figure 13 As shown by the solid line in the middle.

[0070] When the lower key is used to unlock, in the unlocked position, the first driven gear 112 engages with the locking pin 3 via the second pin groove 1223, and the first driven gear 112 meshes with the first driving gear 111 in a second position. At this time, the first involute limiting part 1112 does not mesh with the first driven gear 112; see also Figure 13 As shown by the dashed line.

[0071] Third embodiment of the leaf lock Combination Figure 14 The difference between this embodiment and the first embodiment of the leaf lock is that, in this embodiment: The first driven gear 112 is also provided with a third pin groove 1323. The first pin groove 1123 is located between the second pin groove 1223 and the first lever block 1122. The central angle between the third pin groove 1323 and the first pin groove 1123 is a preset angle α.

[0072] In the unlocked position, when the first driven gear 112 is engaged with the locking pin 3 by the first pin groove 1123, in the unlocked position of the blade assembly 1, the first involute limiting part 1112 meshes with the first driven gear 112.

[0073] In the unlocked position, when the first driven gear 112 is engaged with the locking pin 3 by the third pin groove 1323, in the unlocked position of the blade assembly 1, the first involute limiting part 1112 has not yet engaged with the first driven gear 112.

[0074] This design enables the lock cylinder structure 10 to achieve hierarchical management, thereby allowing the lock cylinder structure 10 to be adapted to keys with different management levels, improving the practicality and functionality of the lock cylinder structure 10 and the leaf lock 100 equipped with this lock cylinder structure 10.

[0075] For example, suppose the gear code of the upper key is ①②③②①, and the gear code of the lower key is ③②③②③, where gear code ① corresponds to the first driven gear 112, gear code ② corresponds to the second driven gear 122, and gear code ③ corresponds to the third driven gear 132; then, in order to ensure that the upper key and the lower key can open the same lock cylinder structure 10, the first driven gear 112 of the lock cylinder structure 10 needs to be compatible with gear code ① and gear code ②, that is, the gear code corresponding to the lock cylinder structure 10 is (①, ③)②③②(①, ③). By setting the first driven gear 112 as described above, the lock cylinder structure 10 can be opened by both the upper key and the lower key.

[0076] When the upper key is used to unlock, in the unlocked position, the first driven gear 112 engages with the locking pin 3 via the first pin groove 1123, and the first driven gear 112 meshes with the first driving gear 111 in the first position. At this time, the first involute limiting part 1112 meshes with the first driven gear 112; see also Figure 14 As shown by the solid line in the middle.

[0077] When the lower key is used to unlock, in the unlocked position, the first driven gear 112 engages with the locking pin 3 via the third pin groove 1323, and the first driven gear 112 meshes with the first driving gear 111 in a second position. At this time, the first involute limiting part 1112 does not mesh with the first driven gear 112; see also Figure 14 As shown by the dashed line.

[0078] Fourth embodiment of the leaf lock Combination Figure 15 The difference between this embodiment and the first embodiment of the leaf lock is that, in this embodiment: The second driven gear 122 is also provided with a third pin groove 1323. The second pin groove 1223 is located between the third pin groove 1323 and the second lever 1222. The central angle between the second pin groove 1223 and the third pin groove 1323 is a preset angle α.

[0079] In the unlocked position, when the second driven gear 122 is engaged with the locking pin 3 by the second pin groove 1223, in the unlocked position of the blade assembly 1, the second involute limiting part 1212 meshes with the second driven gear 122.

[0080] In the unlocked position, when the second driven gear 122 is engaged with the locking pin 3 by the third pin groove 1323, in the unlocked position of the blade assembly 1, the second involute limiting part 1212 has not yet engaged with the second driven gear 122.

[0081] This design enables the lock cylinder structure 10 to achieve hierarchical management, thereby allowing the lock cylinder structure 10 to be adapted to keys with different management levels, improving the practicality and functionality of the lock cylinder structure 10 and the leaf lock 100 equipped with this lock cylinder structure 10.

[0082] For example, suppose the gear code of the upper key is ②①③①③, and the gear code of the lower key is ③①③①③, where gear code ① corresponds to the first driven gear 112, gear code ② corresponds to the second driven gear 122, and gear code ③ corresponds to the third driven gear 132; then, in order to ensure that the upper key and the lower key can open the same lock cylinder structure 10, the second driven gear 122 of the lock cylinder structure 10 needs to be compatible with gear code ② and gear code ③, that is, the gear code corresponding to the lock cylinder structure 10 is (②, ③)①③①③. By setting the second driven gear 122 as described above, the lock cylinder structure 10 can be opened by both the upper key and the lower key.

[0083] When the upper key is used to unlock, in the unlocked position, the second driven gear 122 engages with the locking pin 3 via the second pin groove 1223, and the second driven gear 122 meshes with the second driving gear 121 in the first position. At this time, the second involute limiting part 1212 meshes with the second driven gear 122; see also Figure 15 As shown by the solid line in the middle.

[0084] When the lower key is used to unlock, in the unlocked position, the second driven gear 122 engages with the locking pin 3 via the third pin groove 1323, and the second driven gear 122 meshes with the second driving gear 121 in the second position. At this time, the second involute limiting part 1212 does not mesh with the second driven gear 122; see also Figure 15 As shown by the dashed line.

[0085] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lock cylinder structure, characterized in that: It includes a blade assembly, a drive shaft, and a locking pin. The blade assembly includes a first gear set and a second gear set. The blade assembly has an unlocked position and an initial locked position. The first gear set includes a first driving gear and a first driven gear that mesh with each other. The first driving gear is provided with a first keyhole, and the first driven gear is provided with a first shaft hole. The wall of the first shaft hole is provided with a first shift block and a first pin groove distributed along its own circumference. The second gear set includes a second driving gear and a second driven gear that mesh with each other. The second driving gear is provided with a second keyhole, and the second driven gear is provided with a second shaft hole. The wall of the second shaft hole is provided with a second shift block and a second pin groove distributed along its own circumference. The drive shaft is provided with a pin receiving groove and a fan ring groove distributed along its circumference. The drive shaft passes through the first shaft hole and the second shaft hole. The first shift block and the second shift block are both movably disposed in the fan ring groove. In the unlocked position, the locking pin can be keyed to the first pin groove, the second pin groove, and the receiving pin groove, and the first toggle block and / or the second toggle block can drive the transmission shaft to rotate. The central angle between the first keyhole and the second keyhole is a preset angle. In the initial locking position, the first pin groove and the second pin groove are respectively offset from the receiving pin groove, the locking pin is located in the receiving pin groove, and the first keyhole and the second keyhole are aligned.

2. The lock cylinder structure according to claim 1, characterized in that: The blade assembly also includes a third gear assembly, which includes a third driving gear and a third driven gear that mesh with each other. The third driving gear is provided with a third keyhole, and the third driven gear is provided with a third shaft hole. The wall of the third shaft hole is provided with a third shift block and a third pin groove distributed along its own circumference. The drive shaft also passes through the third shaft hole, and the third shift block is movably disposed in the fan ring groove. In the unlocked position, the locking pin can also be keyed to the third pin groove, the third lever can push the transmission shaft to rotate, and the central angle between the third keyhole and the first keyhole is twice the preset angle; In the initial locking position, the third pin groove is offset from the receiving pin groove, and the third keyhole is aligned with the first keyhole.

3. The lock cylinder structure according to claim 2, characterized in that: The lock cylinder structure also includes a guide plate, which includes an avoidance ring portion and a guide support portion; The first drive gear, the second drive gear, and the third drive gear are distributed along the axial direction of the clearance ring. The guide support is provided with a through hole and a guide groove. The end of the drive shaft is rotatably connected to the through hole. The end of the locking pin is located in the guide groove. Along the unlocking rotation direction of the drive shaft, the upstream end of the guide groove is provided with a guide surface.

4. The lock cylinder structure according to claim 3, characterized in that: The lock cylinder structure also includes an elastic element disposed between the locking pin and the drive shaft, which forces the locking pin to move toward the inlet and outlet of the receiving pin groove.

5. The lock cylinder structure according to claim 2, characterized in that: The first driven gear is provided with the second pin groove, the first pin groove is located between the second pin groove and the first shift block, and the central angle between the second pin groove and the first pin groove is the preset angle; or The first driven gear is provided with the third pin groove, the first pin groove is located between the third pin groove and the first shift block, and the central angle between the third pin groove and the first pin groove is twice the preset angle.

6. The lock cylinder structure according to claim 5, characterized in that: The first driving gear is provided with a first involute limiting part; In the unlocked position, when the first driven gear is engaged with the locking pin by the first pin groove, in the unlocked position of the blade assembly, the first involute limiting portion meshes with the first driven gear.

7. The lock cylinder structure according to claim 2, characterized in that: The second driven gear is provided with the third pin groove, which is located between the third pin groove and the second shift block. The central angle between the third pin groove and the second pin groove is the preset angle.

8. The lock cylinder structure according to claim 7, characterized in that: The second driving gear is provided with a second involute limiting part; In the unlocked position, when the second driven gear is engaged with the locking pin by the second pin groove, in the unlocked position of the blade assembly, the second involute limiting portion meshes with the second driven gear.

9. The lock cylinder structure according to any one of claims 2 to 8, characterized in that: The third driving gear is provided with a third involute limiting part, and in the unlocked position of the blade group, the third involute limiting part meshes with the third driven gear.

10. A leaf lock, characterized in that, Includes the lock cylinder structure as described in any one of claims 1 to 9.

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