Anti-shock unlocking padlock

Abstract

The application provides an anti-impact unlocking padlock, which comprises a lock body, a locking lever, a lock cylinder, a driving wheel and a lock hook. The locking lever is movably arranged on the lock body and has a locking position and an unlocking position. The lock cylinder is rotatably arranged on the lock body and is connected with the driving wheel. The locking lever is provided with a first groove, and the driving wheel comprises a crank pin located in the first groove. The lock body is provided with a limiting protrusion, and the tail end of the locking lever is provided with a second groove. In the locking position, the limiting protrusion is arranged in a dislocation mode with the second groove, and the limiting protrusion prevents the locking lever from moving to the unlocking position when the locking lever is impacted by external force. The application is beneficial to improving the safety of the padlock.

Description

Technical Field

[0001] This application relates to the field of lock technology, and more specifically, to a padlock that is resistant to impact unlocking. Background Technology

[0002] Padlocks, as a common traditional lock, are widely used in daily life and industrial applications. They are favored for their convenience, as they do not require a separate key. To lock, simply press the hook back to its original position, engaging the locking groove with the locking lever. To unlock, simply disengage the locking lever from the hook groove.

[0003] like Figure 1 , Figure 2 and Figure 3 As shown, Figure 1 This is a schematic diagram of the locked state of a padlock, provided as background information for this application. Figure 2 A schematic diagram illustrating the unlocked state of a padlock, provided as background information for this application. Figure 3 This is a schematic diagram of a padlock before locking, provided as part of the background technology of this application. The locking process of the padlock 1 is as follows: When switching from the locked state to the unlocked state, the crank pin 51 is located in the first groove 21 of the locking rod 20 and contacts the wall of the first groove 21 away from the lock hook 60. The drive wheel 50 drives the crank pin 51 to rotate half a revolution, thereby moving the locking rod 20 from the locked position to the unlocked position along the first direction X. The locking rod 20 separates from the lock hook groove 61 of the lock hook 60, achieving unlocking (e.g., ...). Figure 1 and Figure 2 (As shown). At this time, the drive wheel 50 drives the crank pin 51 to continue rotating half a revolution. At this time, the crank pin 51 disengages from the wall of the first groove 21 away from the locking hook 60 (as shown). Figure 3 (As shown). When switching from the unlocked state to the locked state, pressing the lock hook 60 causes the locking lever 20 to engage with the lock hook groove 61 of the lock hook 60. The locking lever 20 moves closer to the lock hook 60 along the first direction X, causing the crank pin 51 to contact the wall of the first groove 21 away from the lock hook 60 (as shown). Figure 1 (As shown). The stroke in which the crank pin 51 moves in the first groove 21 is the play stroke.

[0004] When the padlock 1 is impacted in the first direction X, the locking lever 20 in the locked state is easily disengaged from the hook 60 in the first direction X, thus causing the padlock 1 to unlock under impact, resulting in poor security.

[0005] Therefore, how to improve the security of padlocks is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of this application is to provide a padlock that is resistant to impact unlocking, which can improve the security of the padlock.

[0007] To achieve the above objectives, this application provides an impact-resistant padlock, comprising a lock body, a locking lever, a lock cylinder, a drive wheel, and a lock hook. The locking lever is movably mounted on the lock body and has a locked position and an unlocked position. The lock cylinder is rotatably mounted on the lock body and is connected to the drive wheel. The locking lever has a first groove, and the drive wheel includes a crank pin located within the first groove. The lock body has a limiting protrusion, and the tail end of the locking lever has a second groove. In the locked position, the limiting protrusion and the second groove are misaligned, preventing the locking lever from moving to the unlocked position when subjected to an external impact. In the unlocked position, the limiting protrusion is located within the second groove. When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking lever to rotate, aligning the second groove with the limiting protrusion and moving the locking lever to the unlocked position to release the lock hook. When locking, the lock cylinder drives the drive wheel to rotate, and the locking lever moves from the unlocked position to the locked position to restrict the lock hook.

[0008] In the above technical solution, by setting the lock cylinder to drive the drive wheel to rotate, the crank pin drives the locking rod to rotate and move, so that the locking rod moves from the locked position to the unlocked position, thereby releasing the restriction on the lock hook and realizing unlocking, which facilitates the smooth unlocking of the padlock. When the locking rod moves from the unlocked position to the locked position, the lock hook is restricted, realizing locking, which facilitates the smooth locking of the padlock. When the padlock is subjected to an impact in the first direction, the locking rod has a tendency to move from the locked position to the unlocked position. By setting a second groove at the tail end of the locking rod and setting a limiting protrusion on the lock body, and setting the second groove and the limiting protrusion to be offset, when the padlock is subjected to an impact in the first direction, the limiting protrusion can prevent the locking rod from moving from the locked position to the unlocked position, reducing the risk of the padlock being unlocked due to impact, which helps to improve the security of the padlock.

[0009] In addition, the rail transit split-type knife switch linkage anti-shake device of this application embodiment also has the following additional technical features: In some embodiments, the crank pin has a first inclined surface, and the groove wall of the first groove has a second inclined surface. When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin, through the cooperation of the first and second inclined surfaces, drives the locking rod to rotate, so that the second groove is aligned with the limiting protrusion.

[0010] In the above technical solution, by setting a first inclined surface and a second inclined surface, the first inclined surface abuts against the second inclined surface. When the lock cylinder drives the drive wheel to rotate, the crank pin pushes the second inclined surface through the first inclined surface and drives the locking rod to rotate, thereby aligning the second groove with the limiting protrusion, which facilitates the locking rod to move smoothly from the locked position to the unlocked position.

[0011] In some embodiments, the crank pin has a first flat surface connected to a first inclined surface. During unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking rod to rotate. When the second groove aligns with the limiting protrusion, the first flat surface engages with the second inclined surface to prevent the locking rod from rotating.

[0012] In the above technical solution, when the second groove is aligned with the limiting protrusion, the second inclined surface disengages from the first inclined surface. By setting the first plane to connect with the first inclined surface, the first plane abuts against the locking rod, thereby preventing the first inclined surface from pushing the locking rod to continue rotating, which facilitates the locking rod to move smoothly from the locked position to the unlocked position.

[0013] In some embodiments, the crank pin has a third inclined surface, which is connected to the side of the first plane opposite to the first inclined surface. During unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking lever to rotate. The third inclined surface is used to avoid the locking lever.

[0014] In the above technical solution, when the lock cylinder drives the drive wheel to rotate and the crank pin drives the locking rod to rotate, the side of the crank pin away from the first inclined surface and the locking rod approach each other. By setting a third inclined surface on the side of the first plane away from the first inclined surface, the third inclined surface can avoid the locking rod, which facilitates the locking rod to move smoothly from the locked position to the unlocked position.

[0015] In some embodiments, in the locked position, the distance between the tail end of the locking rod and the limiting protrusion is less than the size at which the head end of the locking rod engages with the locking hook.

[0016] In the above technical solution, by setting the distance between the tail end of the locking rod and the limiting protrusion to be smaller than the size of the head end of the locking rod and the lock hook, the movable distance of the locking rod after being impacted in the locked state is smaller than the size of the head end of the locking rod and the lock hook, so that the locking rod remains in the locked position after being impacted, which helps to improve the security of the padlock.

[0017] In some embodiments, the locking lever has a second plane at its head end, the locking hook has a locking hook groove, and the groove wall of the locking hook groove has a third plane. In the locked position, the second plane and the third plane are in contact. The padlock also includes a locking hook spring, one end of which is connected to the locking hook, and the other end is connected to the lock body. When locking, the locking lever moves from the unlocked position to the locked position, and the locking hook spring pushes the locking hook, causing the third plane to contact the second plane.

[0018] In the above technical solution, by setting the second and third planes, the head end of the locking rod engages with the hook groove, thereby preventing the hook from separating from the locking rod and improving the security of the padlock. When the hook and locking rod move from the separated state to the engaged state, the hook spring stores force. When the locking rod moves from the unlocked position to the locked position, the hook spring pushes the hook, causing the third plane to fit against the second plane, thus facilitating the angle reset of the locking rod.

[0019] In some embodiments, when unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking rod to rotate. The rotation angle is α, which satisfies 5°≤α≤30°.

[0020] In the above technical solution, a rotation angle α is set, and α satisfies the aforementioned conditions. When α ≥ 5°, the misalignment angle between the limiting protrusion and the second groove is relatively large. When the padlock is impacted in the first direction, the limiting protrusion can prevent the locking rod from moving from the locked position to the unlocked position, thereby reducing the risk of the padlock unlocking after being impacted and improving the security of the padlock. When α ≤ 30°, the second groove and the limiting protrusion can cooperate well when the locking rod rotates, facilitating the smooth unlocking of the padlock.

[0021] In some embodiments, the lock body has a boss with a hook hole for inserting a hook. The padlock also includes a rain cap, which is fitted onto the outer circumferential surface of the boss and is interference-fitted with the hook. The rain cap is used to seal the gap between the hook and the boss.

[0022] In the above technical solution, by setting a rainproof cap to seal the gap between the lock hook and the boss, the risk of rainwater or impurities entering the lock hook hole and damaging the lock cylinder is reduced, thereby improving the service life of the padlock.

[0023] In some embodiments, the second groove is a straight groove.

[0024] In the above technical solution, by setting the second groove as a straight groove, it is easier to process the second groove, and when the locking rod moves from the locked position to the unlocked position, the second groove can easily cooperate with the limiting protrusion, which is conducive to the smooth unlocking or locking of the padlock.

[0025] In some embodiments, the lock body has a mounting hole for the locking lever to enter and exit the lock body. The padlock also includes a plug that closes the mounting hole.

[0026] In the above technical solution, by providing an installation hole, the locking rod can pass through the installation hole for installation, which facilitates the installation of the padlock. At the same time, by providing a plug to seal the installation hole, the locking rod is sealed after installation, which helps to reduce the risk of rainwater or impurities entering the lock hook hole and damaging the lock cylinder, thereby improving the service life of the padlock.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the locked state of a padlock provided for the background art of this application; Figure 2 A schematic diagram of the unlocked state of a padlock provided for the background technology of this application; Figure 3 A schematic diagram of a padlock before locking, provided as background information for this application; Figure 4 This application provides schematic diagrams of the structure of padlocks according to some embodiments; Figure 5 This is an exploded view of the structure of a padlock provided in some embodiments of this application; Figure 6 This is a schematic cross-sectional view of the structure of a padlock in the locked state, provided in some embodiments of this application. Figure 7 This is a schematic diagram of the structural state of a padlock during the unlocking process provided in some embodiments of this application; Figure 8 This is a schematic diagram of the structural state of a padlock when it is completely unlocked, provided in some embodiments of this application; Figure 9 A schematic diagram illustrating the state between the locking lever and the locking hook when the padlock hook is pressed back in some embodiments of this application; Figure 10 A schematic diagram illustrating the state of the locking lever and lock body when the padlock is in the locked state, provided for some embodiments of this application; Figure 11 Schematic diagram of the state between the locking lever and the lock body when a padlock is completely unlocked, provided in some embodiments of this application; Figure 12 This is a schematic diagram of the drive wheel axle side provided for some embodiments of this application; Figure 13 Left view of the drive wheel provided for some embodiments of this application; Figure 14 A schematic diagram of the locking rod from the axial side provided for some embodiments of this application; Figure 15 Cross-sectional views of the locking rod provided for some embodiments of this application; Figure 16 A schematic diagram illustrating the state between the locking lever and the drive wheel when the padlock is in the locked state, as provided in some embodiments of this application; Figure 17 for Figure 16 A magnified view of a section at point W1; Figure 18 A schematic diagram illustrating the state between the locking lever and the drive wheel when a padlock is in the unlocking process, as provided in some embodiments of this application; Figure 19 for Figure 18 A magnified view of a section at W2; Figure 20 A schematic diagram illustrating the state between the locking lever and the drive wheel when a padlock is fully unlocked, as provided in some embodiments of this application; Figure 21 for Figure 20 A magnified view of the area at W3.

[0030] Icons: 1-Padlock; 10-Lock body; 11-Limiting protrusion; 12-Boss; 121-Hook hole; 13-Mounting hole; 20-Locking rod; 21-First groove; 211-Second slope; 22-Second groove; 23-Second plane; 30-Locking rod spring; 40-Lock cylinder; 50-Drive wheel; 51-Crank pin; 511-First slope; 512-First plane; 513-Third slope; 60-Hook; 61-Hook groove; 611-Third plane; 70-Hook spring; 80-Rain cap; 90-Plug; a-First dimension; b-Second dimension; X-First direction. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of the embodiments of this application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art, and is only for the convenience of describing this application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] like Figures 4 to 11 As shown, Figure 4 This is a schematic diagram of the structure of a padlock provided in some embodiments of this application. Figure 5 This is an exploded view of the structure of a padlock provided in some embodiments of this application. Figure 6 This is a structural cross-sectional diagram of a padlock in the locked state, provided in some embodiments of this application. Figure 7 This is a schematic diagram illustrating the structural state of a padlock during the unlocking process, provided in some embodiments of this application. Figure 8 This is a schematic diagram of the structural state of a padlock when it is completely unlocked, provided in some embodiments of this application. Figure 9 This is a schematic diagram illustrating the state between the locking lever and the locking hook when the padlock hook is pressed back in some embodiments of this application. Figure 10 This is a schematic diagram illustrating the state of the locking lever and lock body when the padlock is in the locked state, as provided in some embodiments of this application. Figure 11 This is a schematic diagram illustrating the state between the locking lever and the lock body when a padlock is fully unlocked, as provided in some embodiments of this application. Embodiments of this application provide a padlock 1 designed to withstand impact unlocking. The padlock 1 includes a lock body 10, a locking lever 20, a locking lever spring 30, a lock cylinder 40, a drive wheel 50, a lock hook 60, and a lock hook spring 70 (e.g., ...). Figure 4 and Figure 5 (As shown). The locking lever 20 is movably mounted on the lock body 10, and the locking lever 20 has a locked position and an unlocked position (as shown). Figure 6 and Figure 8 (As shown). One end of the locking lever spring 30 is connected to the lock body 10, and the other end is connected to the locking lever 20. The lock cylinder 40 is rotatably mounted on the lock body 10 and is connected to the drive wheel 50. The locking lever 20 has a first groove 21, and the drive wheel 50 includes a crank pin 51 located within the first groove 21. The lock hook 60 has a lock hook groove 61, and the lock hook 60 has a first position where the lock hook groove 61 engages with the head end of the locking lever 20 and a second position where the lock hook groove 61 is separated from the head end of the locking lever 20 (e.g., as shown). Figure 6 and Figure 8(As shown). One end of the locking hook spring 70 is connected to the locking hook 60, and the other end is connected to the lock body 10. The lock body 10 is provided with a limiting protrusion 11, and the tail end of the locking rod 20 is provided with a second groove 22. In the locked position, the limiting protrusion 11 and the second groove 22 are misaligned, and the limiting protrusion 11 prevents the locking rod 20 from moving to the unlocked position (as shown). Figure 10 (As shown). In the unlocked position, the limiting protrusion 11 is located in the second groove 22 (as shown). Figure 11 (As shown). During unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate, so that the second groove 22 aligns with the limiting protrusion 11, and drives the locking rod 20 to move to the unlocked position. The lock hook spring 70 drives the lock hook 60 to move from the first position to the second position (as shown). Figure 6 , Figure 7 and Figure 8 (As shown). When locked, the lock cylinder 40 drives the drive wheel 50 to rotate. When the lock hook 60 moves from the second position to the first position, the locking rod spring 30 drives the locking rod 20 from the unlocked position to the locked position (as shown). Figure 6 , Figure 8 and Figure 9 (As shown).

[0037] In some embodiments, the first direction can be represented by the direction indicated by the letter X in the figure.

[0038] In some embodiments, the lock body 10 may have a receiving cavity, and the locking lever 20 is movably mounted in the receiving cavity along a first direction X, such that the locking lever 20 has a locked position and an unlocked position.

[0039] In some embodiments, the drive wheel 50 may be disposed below the locking rod 20, and the drive wheel 50 engages with the first groove 21 through the crank pin 51 to achieve transmission engagement with the locking rod 20.

[0040] In some embodiments, the limiting protrusion 11 and the second groove 22 are misaligned, and the misalignment angle can be 15°.

[0041] In some embodiments, the limiting protrusion 11 prevents the locking rod 20 from moving to the unlocked position. The way to prevent movement is that the distance between the tail end of the locking rod 20 and the limiting protrusion 11 is smaller than the size of the head end of the locking rod 20 and the locking hook groove 61.

[0042] In some embodiments, the limiting protrusion 11 may be disposed at the tail end of the locking rod 20, and the second groove 22 may be disposed on the lock body 10. The limiting protrusion 11 and the second groove 22 are misaligned, and the limiting protrusion 11 prevents the locking rod 20 from moving to the unlock position.

[0043] In some embodiments, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate so that the second groove 22 is aligned with the limiting protrusion 11, and drives the locking rod 20 to move to the unlock position. The way the crank pin 51 drives the locking rod 20 to rotate and move can be by setting transmission inclined surfaces for the crank pin 51 and the locking rod 20 respectively, and the rotation of the crank pin 51 drives the locking rod 20 to rotate through the transmission inclined surfaces.

[0044] In some embodiments, the lock cylinder 40 can be driven by a mechanical key or by a motor.

[0045] When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate around the central axis of the locking rod 20 (not marked in the figure), so that the second groove 22 is aligned with the limiting protrusion 11, and drives the locking rod 20 to move to the unlocking position, so that the limiting protrusion 11 is inserted into the second groove 22, and the locking rod 20 is separated from the lock hook groove 61. The lock hook spring 70 is reset and drives the lock hook 60 to move from the first position to the second position, thereby unlocking.

[0046] When locked, the lock cylinder 40 drives the drive wheel 50 to rotate, causing the crank pin 51 to separate from the first groove 21 away from the groove wall of the lock hook 60. When the lock hook 60 is pressed, the lock hook spring 70 is compressed, moving the lock hook 60 from the second position to the first position. When the lock hook groove 61 corresponds to the locking rod 20, the locking rod spring 30 returns to its original position, causing the locking rod 20 to insert into the lock hook groove 61. The locking rod 20 moves from the unlocked position to the locked position, thus achieving locking.

[0047] In the above technical solution, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate and move, so that the locking rod 20 moves from the locked position to the unlocked position. At the same time, the lock hook spring 70 moves the lock hook 60 from the first position to the second position to achieve unlocking, which facilitates the smooth unlocking of the padlock 1. By setting the locking rod spring 30, when the lock hook 60 moves from the second position to the first position, the locking rod 20 moves from the unlocked position to the locked position to achieve locking, which facilitates the smooth locking of the padlock 1. When the padlock 1 is impacted in the first direction X, the locking lever 20 tends to move from the locked position to the unlocked position. By providing a second groove 22 at the tail end of the locking lever 20 and a limiting protrusion 11 on the lock body 10, and by misaligning the second groove 22 with the limiting protrusion 11, the limiting protrusion 11 can prevent the locking lever 20 from moving from the locked position to the unlocked position when the padlock 1 is impacted in the first direction X. This reduces the risk of the padlock 1 being unlocked due to impact and improves the security of the padlock 1.

[0048] like Figures 10 to 21 As shown, Figure 12 This is a schematic diagram of the drive wheel axle side provided in some embodiments of this application. Figure 13 This is a left view of the drive wheel provided in some embodiments of this application. Figure 14 This is a schematic diagram of the locking rod from the axial side provided in some embodiments of this application. Figure 15 This is a cross-sectional view of the locking rod provided in some embodiments of this application. Figure 16 This is a schematic diagram illustrating the state between the locking lever and the drive wheel when the padlock is in the locked state, as provided in some embodiments of this application. Figure 17 for Figure 16 A magnified view of a section at point W1. Figure 18 This is a schematic diagram illustrating the state between the locking lever and the drive wheel when a padlock is in the unlocking process, as provided in some embodiments of this application. Figure 19 for Figure 18 A magnified view of the area at W2 in the middle. Figure 20 This is a schematic diagram illustrating the state between the locking lever and the drive wheel when a padlock is fully unlocked, as provided in some embodiments of this application. Figure 21 for Figure 20 In the enlarged view of part W3, in some embodiments, the crank pin 51 is provided with a first inclined surface 511, and the groove wall of the first groove 21 is provided with a second inclined surface 211. When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51, through the cooperation of the first inclined surface 511 and the second inclined surface 211, drives the locking rod 20 to rotate, so that the second groove 22 is aligned with the limiting protrusion 11.

[0049] In some embodiments, in the locked state, the first inclined surface 511 and the second inclined surface 211 can be in contact with each other.

[0050] In some embodiments, the first inclined surface 511 and the second inclined surface 211 can cooperate in such a way that the movement of the first inclined surface 511 pushes the second inclined surface 211, causing the second inclined surface 211 to climb along the first inclined surface 511.

[0051] In some embodiments, the locking rod 20 rotates to align the second groove 22 with the limiting protrusion 11. The alignment can be controlled by adjusting the highest point of the first inclined surface 511 according to the misalignment angle between the second groove 22 and the limiting protrusion 11, so that the locking rod 20 stops rotating when it climbs up the second inclined surface 211 to the highest point of the first inclined surface 511.

[0052] When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, which in turn drives the crank pin 51 to rotate, thereby causing the first inclined surface 511 to move. The horizontal and vertical components of the first inclined surface 511 can be combined into a resultant force that can push the second inclined surface 211, causing the second inclined surface 211 to climb on the first inclined surface 511, thereby causing the locking rod 20 to rotate around the central axis of the locking rod 20 until the second groove 22 is aligned with the limiting protrusion 11.

[0053] In the above technical solution, by setting a first inclined surface 511 and a second inclined surface 211, the first inclined surface 511 abuts against the second inclined surface 211. When the lock cylinder 40 drives the drive wheel 50 to rotate, the crank pin 51 pushes the second inclined surface 211 through the first inclined surface 511 and drives the locking rod 20 to rotate, thereby aligning the second groove 22 with the limiting protrusion 11, which facilitates the locking rod 20 to move smoothly from the locked position to the unlocked position.

[0054] like Figures 10 to 21 As shown, in some embodiments, the crank pin 51 has a first plane 512, which is connected to the first inclined surface 511. When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate. When the second groove 22 is aligned with the limiting protrusion 11, the first plane 512 and the second inclined surface 211 cooperate to prevent the locking rod 20 from rotating.

[0055] In some embodiments, the first plane 512 can be determined by controlling the highest point of the first inclined surface 511 according to the misalignment angle between the second groove 22 and the limiting protrusion 11, and extending the first plane 512 from the highest point, so that the locking rod 20 stops rotating when the second inclined surface 211 climbs to the first plane 512.

[0056] When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 rotates, causing the second inclined surface 211 to climb on the first inclined surface 511, thereby causing the locking rod 20 to rotate around the central axis of the locking rod 20 until the second groove 22 is aligned with the limiting protrusion 11. At this time, the second inclined surface 211 disengages from the first inclined surface 511, and the first plane 512 abuts against the locking rod 20 to keep the locking rod 20 in its current state.

[0057] In the above technical solution, when the second groove 22 is aligned with the limiting protrusion 11, the second inclined surface 211 disengages from the first inclined surface 511. By setting the first plane 512 to connect with the first inclined surface 511, the first plane 512 abuts against the locking rod 20, thereby preventing the first inclined surface 511 from pushing the locking rod 20 to continue rotating, which facilitates the locking rod 20 to move smoothly from the locked position to the unlocked position.

[0058] like Figures 10 to 21 As shown, in some embodiments, the crank pin 51 is provided with a third inclined surface 513, which is connected to the side of the first plane 512 opposite to the first inclined surface 511. When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate. The third inclined surface 513 is used to avoid the locking rod 20.

[0059] In some embodiments, the third inclined surface 513 extends away from the central axis of the locking rod 20 to provide clearance for the rotation of the locking rod 20.

[0060] In some embodiments, the crank pin 51 pushes the second inclined surface 211 through the first inclined surface 511, causing the locking rod 20 to rotate, and causing the side of the crank pin 51 away from the first inclined surface 511 to move closer to the locking rod 20, thereby causing the crank pin 51 to potentially interfere with the locking rod 20.

[0061] When unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 rotates, causing the second inclined surface 211 to climb on the first inclined surface 511. The locking rod 20 rotates around the central axis of the locking rod 20. The third inclined surface 513 can provide clearance for the rotation of the locking rod 20 until the second groove 22 is aligned with the limiting protrusion 11. At the same time, the second inclined surface 211 disengages from the first inclined surface 511, and the first plane 512 abuts against the locking rod 20 to keep the locking rod 20 in its current state.

[0062] In the above technical solution, when the lock cylinder 40 drives the drive wheel 50 to rotate and the crank pin 51 drives the locking rod 20 to rotate, the side of the crank pin 51 away from the first inclined surface 511 approaches the locking rod 20. By setting a third inclined surface 513 on the side of the first plane away from the first inclined surface 511, the third inclined surface 513 can avoid the locking rod 20, which is conducive to the locking rod 20 moving smoothly from the locked position to the unlocked position.

[0063] like Figure 6 As shown, in some embodiments, in the locked position, the distance between the tail end of the locking rod 20 and the limiting protrusion 11 is less than the size of the head end of the locking rod 20 and the locking hook groove 61.

[0064] In some embodiments, in the locked state, the distance between the tail end of the locking rod 20 and the limiting protrusion 11 along the first direction X is a first dimension, which can be represented by the letter a in the figure.

[0065] In some embodiments, in the locked state, the dimension by which the head end of the locking rod 20 engages with the lock hook groove 61 along the first direction X is the second dimension, which can be represented by the letter b in the figure.

[0066] In some embodiments, the first dimension a is smaller than the second dimension b.

[0067] In the locked state, when the padlock 1 is impacted in the first direction X, the locking lever 20 tends to move from the locked position to the unlocked position. The maximum distance that the locking lever 20 can move is less than the size of the head end of the locking lever 20 and the lock hook groove 61, so that the locking lever 20 is still in the locked position.

[0068] In the above technical solution, by setting the distance between the tail end of the locking rod 20 and the limiting protrusion 11 to be less than the size of the head end of the locking rod 20 and the lock hook groove 61, the movable distance of the locking rod 20 after being impacted in the locked state is less than the size of the head end of the locking rod 20 and the lock hook groove 61, thereby ensuring that the locking rod 20 remains in the locked position after being impacted, which helps to improve the security of the padlock 1.

[0069] like Figure 6 and Figure 9 As shown, in some embodiments, the head end of the locking rod 20 is provided with a second plane 23, and the groove wall of the locking hook groove 61 is provided with a third plane 611. In the locked position, the second plane 23 and the third plane 611 cooperate to prevent the locking hook 60 from moving from the first position to the second position. When locked, the locking rod spring 30 drives the locking rod 20 to move from the unlocked position to the locked position, and the locking hook spring 70 pushes the locking hook 60, so that the third plane 611 and the second plane 23 are in contact.

[0070] When in the locked position, the locking rod 20 is located in the lock hook groove 61, and the second plane 23 is in contact with the third plane 611, so that the lock hook 60 compresses the lock hook spring 70 to prevent the lock hook spring 70 from returning to its original position, thereby preventing the lock hook 60 from moving from the first position to the second position.

[0071] When the locking lever 20 moves from the locked position to the unlocked position, the locking lever 20 rotates and moves, so that the limiting protrusion 11 is located in the second groove 22, thereby separating the second plane 23 from the third plane 611.

[0072] When the locking lever 20 moves from the unlocked position to the locked position, the locking lever spring 30 returns to its original position, causing the second groove 22 of the locking lever 20 to separate from the limiting protrusion 11. The locking lever 20, maintaining the angle of the unlocked position, enters the lock hook groove 61. At this time, the second plane 23 and the third plane 611 are in contact but not in contact. When the locking lever 20 enters the lock hook groove 61, and the second plane 23 and the third plane 611 are in contact but not in contact, the spring force of the lock hook spring 70 is released, causing the third plane 611 to push the second plane 23 upward. This causes the locking lever 20 to rotate and return to its original position around the central axis of the locking lever 20, so that the third plane 611 is in contact with the second plane 23. This causes the limiting protrusion 11 to be misaligned with the second groove 22, so that when the padlock 1 is impacted in the first direction X, the limiting protrusion 11 can prevent the locking lever 20 from moving to the unlocked position.

[0073] In the above technical solution, by setting the second plane 23 and the third plane 611, the head end of the locking rod 20 engages with the hook groove 61, thereby preventing the hook 60 from moving from the first position to the second position, which helps to improve the security of the padlock 1. When the hook 60 moves from the second position to the first position, the hook spring 70 stores force. When the locking rod 20 moves from the unlocked position to the locked position, the hook spring 70 pushes the hook 60, causing the third plane 611 to fit against the second plane 23, which facilitates the angle reset of the locking rod 20.

[0074] like Figure 10 and Figure 11 As shown, in some embodiments, when unlocking, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate. The rotation angle is α, which satisfies 5°≤α≤30°.

[0075] In some embodiments, the included angle α satisfies the above conditions, and the included angle α can be any value among 5°, 10°, 15°, 20°, 25°, and 30° or a value between two arbitrary values.

[0076] In some embodiments, when the locking lever 20 is in the unlocked position and the limiting protrusion 11 is located in the second groove 22, there may be a gap between the limiting protrusion 11 and the second groove 22.

[0077] In some embodiments, when the locking rod 20 is in the locked position and the limiting protrusion 11 and the second groove 22 are misaligned, the misalignment angle between the limiting protrusion 11 and the second groove 22 is α.

[0078] During the unlocking process, the lock cylinder 40 drives the drive wheel 50 to rotate, and the crank pin 51 drives the locking rod 20 to rotate around the central axis of the locking rod 20. When the locking rod 20 rotates by an angle α, the second groove 22 aligns with the limiting protrusion 11, and the locking rod 20 moves to the unlocking position, so that the limiting protrusion 11 inserts into the second groove 22, thereby separating the locking rod 20 from the lock hook groove 61. The lock hook spring 70 resets and drives the lock hook 60 to move from the first position to the second position, thus achieving unlocking.

[0079] In the above technical solution, a rotation angle α is set, and α satisfies the above conditions. When α ≥ 5°, the misalignment angle between the limiting protrusion 11 and the second groove 22 is relatively large. When the padlock 1 is impacted in the first direction X, the limiting protrusion 11 can prevent the locking rod 20 from moving from the locked position to the unlocked position, thereby reducing the risk of the padlock 1 unlocking after being impacted and improving the security of the padlock 1. When α ≤ 30°, the second groove 22 and the limiting protrusion 11 can cooperate well when the locking rod 20 rotates, which is conducive to the smooth unlocking of the padlock 1.

[0080] like Figures 4 to 6As shown, in some embodiments, the lock body 10 is provided with a boss 12, and the boss 12 is provided with a hook hole 121 for the hook 60 to be inserted. The padlock 1 also includes a rain cap 80, which is sleeved on the outer peripheral surface of the boss 12 and is interference-fitted with the hook 60. The rain cap 80 is used to seal the gap between the hook 60 and the boss 12.

[0081] In some embodiments, a rubber ring may be provided on the inner wall of the rain cap 80, which fits against the locking hook 60 to improve the sealing effect.

[0082] In some embodiments, the rain cap 80 may be made of plastic or metal.

[0083] During use, rainwater or impurities in the environment can be blocked from the outside of the lock body by the rain cap, thus protecting the lock cylinder inside the lock body.

[0084] In the above technical solution, by setting the rain cap 80 to seal the gap between the lock hook 60 and the boss 12, the risk of rainwater or impurities entering the lock hook hole 121 and damaging the lock cylinder 40 is reduced, thereby improving the service life of the padlock 1.

[0085] like Figure 14 As shown, in some embodiments, the second groove 22 is a straight groove.

[0086] In some embodiments, the second groove 22 may be machined or integrally formed with the locking rod 20.

[0087] In the above technical solution, by setting the second groove 22 as a straight groove, it is easier to process the second groove 22. When the locking rod 20 moves from the locked position to the unlocked position, the second groove 22 can easily cooperate with the limiting protrusion 11, which is conducive to the smooth unlocking or locking of the padlock 1.

[0088] like Figures 4 to 6 As shown, in some embodiments, the lock body 10 is provided with a mounting hole 13 for the locking lever 20 to enter and exit the lock body 10. The padlock 1 also includes a plug 90, which closes the mounting hole 13.

[0089] In some embodiments, the plug 90 may close the mounting hole 13 by means of threaded installation.

[0090] When assembling padlock 1, the locking rod 20 is installed inside the lock body 10 through the mounting hole 13 and sealed by the plug 90. If padlock 1 requires maintenance later, the locking rod 20 can be removed from the mounting hole 13 by removing the plug 90.

[0091] In the above technical solution, by providing the mounting hole 13, the locking rod 20 can pass through the mounting hole 13 for installation, which facilitates the installation of the padlock 1. At the same time, by providing the plug 90 to seal the mounting hole 13, the locking rod 20 is sealed after installation, which helps to reduce the risk of rainwater or impurities entering the lock hook hole 121 and damaging the lock cylinder 40, thereby helping to improve the service life of the padlock 1.

[0092] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A padlock resistant to impact unlocking, characterized in that, Includes lock body, locking lever, lock cylinder, drive wheel, and lock hook; The locking lever is movably mounted on the lock body, and the locking lever has a locked position and an unlocked position; The lock cylinder is rotatably mounted on the lock body, and the lock cylinder is connected to the drive wheel; The locking rod is provided with a first groove, and the drive wheel includes a crank pin, which is located in the first groove; The lock body is provided with a limiting protrusion, and the tail end of the locking rod is provided with a second groove; In the locked position, the limiting protrusion is misaligned with the second groove, and the limiting protrusion prevents the locking rod from moving to the unlocked position when subjected to an external force impact; In the unlocked position, the limiting protrusion is located in the second groove. When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking rod to rotate so that the second groove is aligned with the limiting protrusion, and drives the locking rod to move to the unlocking position to release the limitation on the lock hook; When locked, the lock cylinder drives the drive wheel to rotate, and the locking rod moves from the unlocked position to the locked position to limit the lock hook.

2. The anti-impact unlocking padlock according to claim 1, characterized in that, The crank pin is provided with a first inclined surface, and the groove wall of the first groove is provided with a second inclined surface; When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin, through the cooperation of the first inclined surface and the second inclined surface, drives the locking rod to rotate so that the second groove is aligned with the limiting protrusion.

3. The anti-impact unlocking padlock according to claim 2, characterized in that, The crank pin has a first plane, and the first plane is connected to the first inclined surface; When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking rod to rotate. When the second groove is aligned with the limiting protrusion, the first plane and the second inclined surface cooperate to prevent the locking rod from rotating.

4. The anti-impact unlocking padlock according to claim 3, characterized in that, The crank pin is provided with a third inclined surface, and the third inclined surface is connected to the side of the first plane opposite to the first inclined surface; When unlocking, the lock cylinder drives the drive wheel to rotate, the crank pin drives the locking rod to rotate, and the third inclined surface is used to avoid the locking rod.

5. The anti-impact unlocking padlock according to claim 1, characterized in that, In the locked position, the distance between the tail end of the locking rod and the limiting protrusion is less than the size at which the head end of the locking rod engages with the locking hook.

6. The anti-impact unlocking padlock according to claim 1, characterized in that, The locking rod has a second plane at its head end, the locking hook has a locking hook groove, and the groove wall of the locking hook groove has a third plane. In the locked position, the second plane is in contact with the third plane; The padlock also includes a hook spring, one end of which is connected to the hook and the other end of which is connected to the lock body; When locked, the locking rod moves from the unlocked position to the locked position, and the locking hook spring pushes the locking hook so that the third plane fits into the second plane.

7. The anti-impact unlocking padlock according to claim 1, characterized in that, When unlocking, the lock cylinder drives the drive wheel to rotate, and the crank pin drives the locking rod to rotate. The rotation angle is α, which satisfies 5°≤α≤30°.

8. The anti-impact unlocking padlock according to claim 1, characterized in that, The lock body is provided with a boss, and the boss is provided with a hook hole for the lock hook to be inserted; The padlock also includes a rain cap, which is fitted onto the outer circumferential surface of the boss and is interference-fitted with the lock hook. The rain cap is used to seal the gap between the lock hook and the boss.

9. The anti-impact unlocking padlock according to claim 1, characterized in that, The second groove is a straight groove.

10. The anti-impact unlocking padlock according to claim 1, characterized in that, The lock body is provided with a mounting hole for the locking rod to enter and exit the lock body; The padlock also includes a plug that seals the mounting hole.

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