Blade lock guide piece, lock core structure and blade lock

Abstract

The utility model provides a kind of vane lock guide vane, lock cylinder structure and vane lock, vane lock guide vane includes limiting guide portion, limiting guide portion is equipped with first shaft hole and limiting guide slot, first shaft hole and limiting guide slot are all through limiting guide portion, limiting guide slot extends around first shaft hole.Vane lock includes lock cylinder structure, lock cylinder structure includes above-mentioned vane lock guide vane, this vane lock guide vane is used to guide, limit locking pin, ensure that locking pin is accurately and target object accurate keying, separation.

Description

Technical Field

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

[0002] The structure of existing leaf locks is generally as follows: a first cavity is provided on the lock cylinder shell to accommodate the lock cylinder structure, and a receiving pin groove is provided on the inner wall of the first cavity; the lock cylinder structure includes a rotating shell, a leaf assembly, and a locking pin. The rotating shell is rotatably installed in the first cavity, and the hollow rotating shell forms a second cavity. The circumference of the rotating shell is provided with a clearance groove and a fan ring groove. Multiple leaf blades of the leaf assembly are rotatably installed in the second cavity. The leaf assembly is provided with a pin groove and a lever, and the lever is movably located in the fan ring groove; in the locked state, the clearance groove of the rotating shell is directly opposite the receiving pin groove, and the locking pin is keyed to the clearance groove and the receiving pin groove. Between the pin slots and limited by the periphery of the blade, the locking pin cannot be moved out of the receiving pin slot, causing the rotating shell to be unable to rotate; when each blade of the blade group is driven to the unlock position by the key, the pin slots of all blades are aligned to form a straight groove and face the clearance groove, at which time the locking pin can be moved out of the receiving pin slot; when each blade of the blade group is driven to the unlock position by the key, the locking pin is squeezed out of the receiving pin slot and enters the clearance groove and the straight groove, so that the rotating shell can rotate relative to the lock cylinder shell, thereby causing the rotating shell to directly or indirectly drive the lock rod to release the restriction on the lock beam and realize the unlocking.

[0003] However, because both the lock cylinder housing and the rotating housing are manufactured using die casting, the first and second cavities have draft angles (i.e., the cavities are frustum-shaped). This significantly weakens the reliability and security of the leaf lock, specifically in the following ways: During the rotation of the rotating shell relative to the lock cylinder shell, the receiving pin groove is actually inclined to the rotation axis of the rotating shell, which causes the locking pin to easily tilt during the rotation process. This causes one end to disengage from the receiving pin groove first, while the other end is still in the receiving pin groove, which can easily hinder the rotation of the rotating shell. Secondly, after the blades are assembled, their circumferential and radial clearances are unevenly distributed along the axial direction, resulting in a significant increase in clearance at the end near the larger draft angle. This poses a risk that the locking pin may move into the inside of the rotating housing in the unlocked state, which in turn could lead to the risk of the rotating housing rotating without being unlocked. Utility Model Content

[0004] The primary objective of this invention is to provide a leaf lock guide plate for guiding and limiting the locking pin, ensuring that the locking pin accurately engages and separates from the target object.

[0005] The second objective of this invention is to provide a lock cylinder structure that can improve the reliability and security of locks.

[0006] The third objective of this utility model is to provide a leaf lock with the above-mentioned lock cylinder structure.

[0007] To achieve the first objective of this utility model, this utility model provides a blade lock guide plate, which includes a limiting guide portion. The limiting guide portion is provided with a first shaft hole and a limiting guide groove. Both the first shaft hole and the limiting guide groove penetrate the limiting guide portion, and the limiting guide groove extends around the first shaft hole.

[0008] As can be seen from the above, the first shaft hole is used to connect rotating parts (such as drive shafts) to support and limit the rotation of the rotating parts. The rotation axis of the rotating parts is fixed and does not deviate through the two blade lock guide plates. At the same time, the limiting guide groove cooperates with the locking pin to guide and limit the locking pin, so that the locking pin can accurately engage or disengage with the blades (such as gear blades) on the transmission parts. This ensures that the blades can accurately drive the transmission parts to rotate or make the transmission parts accurately disengage from the blades at a set position, realizing the locking and unlocking of the lock. In addition, under the action of the blade lock guide plates, the installation of the transmission parts and the blades are not affected by the mold of the lock cylinder shell, and there is no need to set a rotating shell, which further reduces the fit tolerance and ensures the safety and reliability of the lock cylinder structure and the blade lock with this blade lock guide plate.

[0009] A further design is that the limiting guide groove has a clearance area, a guide area, and a guide zone. The first distance between the clearance area and the first shaft hole is smaller than the second distance between the guide zone and the first shaft hole. The guide zone is arc-shaped, and the guide zone is transitionally connected between the clearance area and the guide zone.

[0010] As can be seen from the above, the clearance area is used to avoid the locking pin when the transmission component and its blades are disengaged from the keyway, and cooperates with the blades on the transmission component to restrict the locking pin in the receiving groove on the transmission component, so that the transmission component and its blades can rotate relative to each other; the guide area is used to make part of the locking pin engage with the pin groove of the blade on the transmission component in the unlocked position, so as to realize the keyway linkage between the transmission component and the blade. At the same time, the guide area can guide the locking pin during the initial rotation of the transmission component by the blade, so as to keep it reliably engaged with the pin groove of the blade; the guide area is used to limit and guide the locking pin during the rotation of the transmission component by the blade to the unlocked position, so as to ensure that the blade and the transmission component are reliably engaged through the locking pin during this process.

[0011] A further improvement is that the blade lock guide plate also includes a limit avoidance ring, which is arranged side by side with the limit guide part and integrally formed.

[0012] As can be seen from the above, the limiting and avoidance ring can cooperate with the lock cylinder shell to limit the guide plate of the blade lock and prevent the guide plate of the blade lock from rotating relative to the lock cylinder shell. On the other hand, it can avoid the key, so that the key can be smoothly inserted into the key hole of another blade that meshes with the blade on the transmission component.

[0013] To achieve the second objective of this utility model, a lock cylinder structure is provided, comprising two aforementioned leaf lock guide plates, a leaf assembly, a drive shaft, and a locking pin. The leaf assembly has an unlocked position and an initial locked position. The leaf assembly includes a first gear assembly and a second gear assembly. The first gear assembly includes a first driving gear and a driven gear meshing with each other. The first driving gear has a first keyhole, and the driven gear has a second shaft hole. The wall of the second shaft hole has a lever and a pin groove. The second gear assembly includes a second driving gear and a driven gear meshing with each other. The second driving gear has a second keyhole. The drive shaft has shaft portions at both ends, one shaft portion and one leaf lock guide plate. The first shaft hole of the leaf lock guide plate is rotatably connected. The circumference of the drive shaft is provided with a receiving pin groove and a fan-shaped groove. The drive shaft passes through the second shaft hole. The toggle block is movably disposed in the fan-shaped groove. The locking pin is disposed in the receiving pin groove. The two ends of the locking pin are movably connected to the limiting guide grooves of the two leaf lock guide plates. In the unlocked position, the locking pin is keyed to the pin groove and the receiving pin groove. The toggle block can push 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 pin groove of the driven gear of the first gear set, the pin groove of the driven gear of the second gear set and the receiving pin groove are staggered. The locking pin is located in the receiving pin groove, and the first key hole and the second key hole are aligned.

[0014] As can be seen above, the drive shaft supports the driven gear of the gear set, ensuring the coaxiality of each driven gear and the drive shaft only requires two blade guide plates. This ensures the precision of the fit between the pin groove, the receiving pin groove, and the locking pin, allowing for precise engagement and disengagement of the drive shaft and driven gear, thus enabling the unlocking and locking of the lock cylinder structure. Furthermore, the machining characteristics of the drive shaft and gears result in high precision in the fit between the pin groove, the receiving groove, and the locking pin, unaffected by the draft angle of the lock cylinder housing. This eliminates the need for a rotating shell, further reducing accumulated tolerances and improving the reliability and security of the lock cylinder structure and locks equipped with this structure. Moreover, the transmission characteristics of the gear set ensure that even with inconsistent clearances between the driving gears and the lock cylinder housing, the gear set maintains high transmission reliability and smooth rotation, preventing jamming during unlocking.

[0015] A further embodiment is that the blade assembly also includes a third gear assembly, which includes a third driving gear and a driven gear that mesh with each other. The third driving gear is provided with a third keyhole. In the unlocked position, the central angle between the third keyhole and the first keyhole is twice the preset angle. In the initial locked position, the pin grooves and receiving pin grooves of the driven gears of the gear assemblies in different meshing states are staggered, and the third keyhole is aligned with the first keyhole.

[0016] 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.

[0017] In a preferred embodiment, the lock cylinder structure further 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 groove.

[0018] 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.

[0019] A further option is to provide a limiting hole at the bottom of the pin groove, with a portion of the elastic element placed inside the limiting hole; and / or to provide a transition arc surface at the junction of the wall of the second shaft hole and the wall of the pin groove.

[0020] 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.

[0021] Another preferred embodiment is that the first driving gear is provided with a first involute limiting part, the second driving gear is provided with a second involute limiting part, and the third driving gear is provided with a third involute limiting part; in the unlocked position of the blade assembly, the first involute limiting part meshes with the driven gear of the first gear assembly, the second involute limiting part meshes with the driven gear of the second gear assembly, and the third involute limiting part meshes with the driven gear of the third gear assembly.

[0022] As can be seen from the above, the design 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.

[0023] A further alternative is to have a keyed part or a cam part on one of the shaft sections of the drive shaft.

[0024] As can be seen from the above, this design allows the drive shaft to indirectly or directly drive the locking lever of the leaf lock to move, thereby unlocking.

[0025] To achieve the third objective of this utility model, this utility model provides a leaf lock, which also includes the lock cylinder structure described above.

[0026] 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

[0027] Figure 1 This is a cross-sectional view of an embodiment of the blade lock of this utility model.

[0028] Figure 2 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention from a first-view perspective when the leaf assembly is in the initial locked position.

[0029] Figure 3 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention from a second perspective when the leaf assembly is in the initial locked position.

[0030] Figure 4 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention, with some components omitted when the leaf assembly is in the initial locked position.

[0031] Figure 5 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention when the leaf assembly is in the unlocked position.

[0032] Figure 6 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention with the leaf assembly in the unlocked position, omitting some components.

[0033] Figure 7 This is a structural diagram of the lock cylinder structure of the leaf lock embodiment of the present invention with the leaf assembly in the unlocked position, omitting some components.

[0034] 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 in the unlocked position, according to an embodiment of the blade lock of this utility model.

[0035] 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 unlocked position, according to an embodiment of the blade lock of this utility model.

[0036] 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 unlocked position, according to an embodiment of the blade lock of this utility model.

[0037] Figure 11 This is a structural diagram of the drive shaft of the lock core structure in an embodiment of the leaf lock of this utility model.

[0038] Figure 12 This is a structural diagram of the guide plate of the leaf lock in the lock cylinder structure of an embodiment of the leaf lock of this utility model.

[0039] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0040] Leaf lock embodiment 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.

[0041] Combination Figures 2 to 7 The lock cylinder structure 10 includes a blade group 1, a drive shaft 2, a locking pin 3, and a blade lock guide plate 4; wherein, according to the position state of the blade group 1, the blade group 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 (e.g. Figure 7 (As shown).

[0042] 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.

[0043] Combination Figure 8 The first gear set 11 includes a first driving gear 111 and a 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 driven gear 112 to rotate, and finally cooperates with other gear sets to drive the transmission shaft 2 to rotate to unlock.

[0044] The driven gear 112 has a second shaft hole 1121. The wall of the second shaft hole 1121 has a lever 1122 and a pin groove 1123. The lever 1122 and pin groove 1123 are distributed circumferentially along the second shaft hole 1121 and along the unlocking rotation direction of the driven gear 112 (i.e., the direction of rotation from the unlocked position to the unlocked position). The lever 1122 is located upstream of the pin groove 1123. The lever 1122 protrudes towards the axis of the second shaft hole 1121, while the pin groove 1123 protrudes away from the axis of the second shaft hole 1121. The 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.

[0045] Combination Figure 9 The second gear set 12 includes a second driving gear 121 and a driven gear 112, 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 driven gear 112 to rotate, ultimately engaging with other gear sets to drive the transmission shaft 2 to rotate and unlock. The second driving gear 121 and the first driving gear 111 are substantially coaxial; 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.

[0046] Combination Figure 10 The third gear set 13 includes a third driving gear 131 and a driven gear 112, which mesh with each other. The third driving gear 131 has a third keyhole 1311 to engage with a corresponding tooth on the key, allowing the key to drive the third driving gear 131 to rotate, which in turn drives the driven gear 112 to rotate, ultimately cooperating with other gear sets to drive the transmission shaft 2 to rotate and 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 4 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 (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.

[0047] Since the first driving gear 111, the second driving gear 121, and the third driving gear 131 correspond to different tooth codes on the key, and the gears meshing with the first driving gear 111, the second driving gear 121, and the third driving gear 131 are all driven gears 112, the meshing positions of the driven gear 112 with the first driving gear 111, the meshing positions of the driven gear 112 with the second driving gear 121, and the meshing positions of the driven gear 112 with the third driving gear 131 are all different, specifically as follows: In the initial locked position, the first keyhole 1111, the second keyhole 1211, and the third keyhole 1311 are aligned, while the driven gears 112 of the first gear set 11, the second gear set 12, and the third gear set 13 are staggered. The central angle between the driven gears 112 of the first gear set 11 and the second gear set 12, and the central angle between the driven gears 112 of the second gear set 12 and the third gear set 13 are... The central angles between the driven gears 112 of the first gear set 11 and the driven gears 112 of the third gear set 13 are all at a preset angle α. It can be understood that at this time, the central angles between the driven gears 112 of the first gear set 11 and the driven gears 112 of the third gear set 13 are all at twice the preset angle α. Correspondingly, the shift blocks 1122 of the driven gears 112 of the first gear set 11, the shift blocks 1122 of the driven gears 112 of the second gear set 12, and the shift blocks 1122 of the driven gears 112 of the third gear set 13 are also staggered.

[0048] Combination Figure 11 The drive shaft 2 is provided with a pin groove 21 and a fan ring groove 22 (meaning that its cross-section is approximately fan ring-shaped). The pin groove 21 and the fan ring groove 22 are distributed along the circumference of the drive shaft 2, and the pin groove 21 and the fan ring groove 22 extend along the axial direction of the drive shaft 2 and penetrate the drive shaft 2. The receiving pin groove 21 is used to receive the locking pin 3, and the locking pin 3 cooperates with the pin groove on each driven gear 112 to realize the clutch drive of the driven gear 112 to the transmission shaft 2. The transmission shaft 2 passes through the second shaft hole 1121 of each driven gear 112, and the toggle block 1122 of each driven gear 112 is movably disposed in the fan ring groove 22, so that during the process of the driven gear 112 rotating from the initial locked position to the unlocked position, each toggle block can rotate relative to the transmission shaft 2 so that the transmission shaft 2 does not rotate. During the process of the driven gear 112 rotating from the unlocked position to the unlocked position, the locking pin 3 is keyed to each pin groove and the receiving pin groove 21, so that the driven gear 112 can drive the transmission shaft 2 to rotate synchronously. That is, in the unlocked position, the locking pin 3 is keyed to the pin groove 1123 and the receiving pin groove 21 of each driven gear 112, and the toggle block 1122 of each driven gear 112 can push the transmission shaft 2 to rotate to the unlocked position.

[0049] Furthermore, the drive shaft 2 has shaft portions 23 at both axial ends to cooperate with the vane lock guide plate 4, allowing the drive shaft 2 to rotate relative to and be supported by the vane lock guide plate 4. One shaft portion 23 of the drive shaft 2 also has a key portion 24, which can cooperate with the cam component 103 to drive the locking rod 102. Alternatively, the shaft portion 23 can also use a cam portion instead of the key portion 24, so that the drive shaft 2 can directly drive the locking rod 102 through the cam portion.

[0050] Combination Figure 12 The leaf lock guide plate 4 includes a limiting guide portion 41 and a limiting avoidance ring 42. The limiting guide portion 41 is preferably disc-shaped, and the limiting avoidance ring 42 is preferably annular. The limiting avoidance ring 42 and the limiting guide portion 41 are arranged side-by-side and integrally formed. The limiting avoidance ring 42 can cooperate with the lock cylinder housing 101 to limit the leaf lock guide plate 4, preventing it from rotating relative to the lock cylinder housing 101. For example, the limiting guide portion 41 cooperates with the cavity accommodating the driven gear 112, and the limiting avoidance ring 42 cooperates with the cavity accommodating the drive gear. On the other hand, it can avoid obstructing the key, allowing the key to be smoothly inserted into the keyhole of each drive gear.

[0051] The limiting guide portion 41 is provided with a first shaft hole 411 and a limiting guide groove 412, both of which penetrate the limiting guide portion 41, and the limiting guide groove 412 extends around the first shaft hole 411. The limiting guide groove 412 has a clearance area 4121, a guide area 4122, and a guide region 4123. The first distance L1 between the clearance area 4121 and the first shaft hole 41 is smaller than the second distance L2 between the guide region 4123 and the first shaft hole 41, and the guide region 4123 is arc-shaped. The guide region 4122 transitionally connects the clearance area 4121 and the guide region 4123.

[0052] There are two blade lock guide plates 4, which are located between the two ends of the drive shaft 2. One shaft part 23 of the drive shaft 2 is rotatably connected to the first shaft hole 411 of one blade lock guide plate 4. The two ends of the locking pin 3 are movably connected to the limiting guide grooves 412 of the two blade lock guide plates 5 respectively.

[0053] As can be seen, the vane lock guide plate 4 is connected to the transmission shaft 2 through the first shaft hole 411 to support and limit the transmission shaft 2. Thus, the two vane lock guide plates 4 ensure that the rotation axis of the transmission shaft 2 is fixed and does not shift. Simultaneously, the limiting guide groove 412 cooperates with the locking pin 3 to guide and limit the locking pin 3, enabling the locking pin 3 to precisely engage or disengage with the pin grooves 1123 of each driven gear 112 on the transmission shaft 2, thereby ensuring that each driven gear 112 can... The transmission shaft 2 can be precisely driven to rotate or accurately disengage from the driven gears 112 at a set position (such as the clearance area 4121) to achieve the unlocking and locking of the blade lock 100. In addition, under the action of the blade lock guide plate 4, the installation of the transmission shaft 2 and the driven gears 112 are not affected by the mold of the lock cylinder housing 102, and there is no need to set a rotating shell, which further reduces the fit tolerance and ensures the safety and reliability of the lock cylinder structure 10 and the blade lock 100.

[0054] The clearance area 4121 is used to avoid the locking pin 3 when the drive shaft 2 and its driven gear 112 disengage from the keyed linkage, and cooperates with the driven gear 112 to restrict the locking pin 3 within the receiving pin groove 21 on the drive shaft 2, allowing the drive shaft 2 and its driven gear 112 to rotate relative to each other. The guide area 4122 is used to make a part of the locking pin 3 engage with the pin groove 1123 of each driven gear 112 on the drive shaft 2 in the unlocked position, realizing the keyed linkage between the drive shaft 2 and each driven gear 112. At the same time, the guide area 4122 can guide the locking pin 3 during the initial rotation of the drive shaft 2 by the driven gear 112, so that the drive pin 3 and the pin groove 1123 of each driven gear 112 remain reliably engaged. The guide area 4123 is used to limit and guide the locking pin 3 during the rotation of the drive shaft 2 by each driven gear 112 to the unlocked position, ensuring that each driven gear 112 and the drive shaft 2 are reliably engaged through the locking pin 3 throughout the process.

[0055] 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 211 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.

[0056] 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 driven gear 112 (e.g., Figure 8As shown), this restricts the 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 driven gear 112.

[0057] 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 driven gear 112 (e.g., Figure 9 As shown), this restricts the driven gear 112 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 driven gear 112.

[0058] 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 driven gear 112 (e.g., Figure 10 As shown), this restricts the driven gear 112 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 driven gear 112.

[0059] 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.

[0060] 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 pin grooves 1123 of the driven gear 112 of the first gear set 11, the second gear set 12, and the third gear set 13 are offset from each other by the receiving pin groove 21. 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.

[0061] Since the first drive gear 111, the second drive gear 121, and the third drive gear 131 are adapted to the tooth codes at different positions on the key, when the blade group 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 (it can be understood here that the central angle between the first keyhole 1111 and the second keyhole 1211, and the central angle between the first keyhole 1111 and the third keyhole 1311 are determined by the position of each tooth code on the key). Simultaneously, the pin grooves 1123 of the driven gear 112 of the first gear set 11, the second gear set 12, and the third gear set 13 are aligned and aligned with the receiving pin groove 21. Furthermore, the pin grooves 1123 of the driven gear 112 of the first gear set 11, the second gear set 12, and the receiving pin groove 21 are all keyed to the locking pin 3. Figure 5 and Figure 6 As shown, at this time, the paddle 1122 of each driven gear 112 is in contact with the side wall of the fan ring groove 22, so that when the driven gear 112 continues to rotate in the unlocking rotation direction, each paddle 1122 pushes the transmission shaft 2 to rotate synchronously.

[0062] 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 drive shaft 2 rotates with each driven gear 112 through the keying of the pin groove 1123, the receiving pin groove 21, and the locking pin 3. 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.

[0063] 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.

[0064] In summary, the design of the lock cylinder structure 10 enables the drive shaft 2 to support the driven gear 112 of the gear set. Simultaneously, the guide plate 4 ensures the coaxiality of each driven gear 112 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 112, 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.

[0065] 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 blade lock guide plate, characterized in that: It includes a limiting guide portion, which has a first shaft hole and a limiting guide groove. Both the first shaft hole and the limiting guide groove pass through the limiting guide portion, and the limiting guide groove extends around the first shaft hole.

2. The blade locking guide plate according to claim 1, characterized in that: The limiting guide groove has a clearance area, a guide area and a guide area. The first distance between the clearance area and the first shaft hole is smaller than the second distance between the guide area and the first shaft hole. The guide area is arc-shaped and the guide area is transitionally connected between the clearance area and the guide area.

3. The blade locking guide plate according to claim 1 or 2, characterized in that: The blade lock guide plate also includes a limiting and avoidance ring, which is arranged side by side with the limiting and guide portion and is integrally formed.

4. A lock cylinder structure, characterized in that, include: Two blade lock guide plates as described in any one of claims 1 to 3; The blade assembly has an unlocked position and an initial locked position. The blade assembly includes a first gear assembly and a second gear assembly. The first gear assembly includes a first driving gear and a driven gear that mesh with each other. The first driving gear has a first keyhole, and the driven gear has a second shaft hole. The wall of the second shaft hole has a paddle and a pin groove. The second gear assembly includes a second driving gear and the driven gear that mesh with each other. The second driving gear has a second keyhole. The drive shaft has shaft portions at both ends, one of the shaft portions being rotatably connected to the first shaft hole of a blade lock guide plate. The circumference of the drive shaft is provided with a pin receiving groove and a fan-shaped groove. The drive shaft passes through the second shaft hole, and the toggle block is movably disposed in the fan-shaped groove. A locking pin is provided in the receiving pin groove, and the two ends of the locking pin are movably connected to the limiting guide grooves of the two blade locking guide pieces. In the unlocked position, the locking pin is keyed to the pin groove and the receiving pin groove, the toggle block can drive the drive shaft to rotate, and the central angle between the first keyhole and the second keyhole is at a preset angle; In the initial locked position, the pin groove of the driven gear of the first gear set, the pin groove of the driven gear of the second gear set, and the receiving pin groove are staggered, the locking pin is located in the receiving pin groove, and the first keyhole and the second keyhole are aligned.

5. The lock cylinder structure according to claim 4, characterized in that: The blade assembly also includes a third gear assembly, which includes a third driving gear and the driven gear meshing with each other, and the third driving gear is provided with a third keyhole; In the unlocked position, the central angle between the third keyhole and the first keyhole is twice the preset angle; In the initial locking position, the pin grooves and receiving pin grooves of the driven gears of the gear sets in different meshing states are staggered, and the third keyhole is aligned with the first keyhole.

6. The lock cylinder structure according to claim 5, 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.

7. The lock cylinder structure according to claim 6, characterized in that: The bottom of the receiving pin groove is provided with a limiting hole, and a portion of the elastic element is placed within the limiting hole; and / or The wall of the second shaft hole and the wall of the pin groove have a transition arc surface at their junction.

8. The lock cylinder structure according to claim 5, characterized in that: The first driving gear is provided with a first involute limiting part, the second driving gear is provided with a second involute limiting part, and the third driving gear is provided with a third involute limiting part; In the unlocked position of the blade assembly, the first involute limiting part meshes with the driven gear of the first gear assembly, the second involute limiting part meshes with the driven gear of the second gear assembly, and the third involute limiting part meshes with the driven gear of the third gear assembly.

9. The lock cylinder structure according to any one of claims 4 to 8, characterized in that: The drive shaft has a keyed part or a cam part on one of its shaft portions.

10. A leaf lock, characterized in that, It also includes the lock cylinder structure as described in any one of claims 4 to 9.

Images