Anti-falling U-shaped lock

Abstract

The utility model discloses an anti-drop U-shaped lock which comprises a U-shaped body and a lock body, the U-shaped body comprises a first rod and a second rod, the lock body is connected between the first rod and the second rod in a sleeved mode, the first rod and the second rod are respectively provided with a limiting protruding ring and a sawtooth strip, and the lock body is provided with a guide through hole for the first rod and the second rod to pass through. The limiting convex ring and one guide through hole are arranged on the same side, and the diameter of the limiting convex ring is at least larger than that of one end opening of the guide through hole. The extension part is arranged on the lock body, after the lock body is separated from the U-shaped body for unlocking, the lock body continues to slide on the U-shaped body through the extension part, the limiting convex ring is arranged on the first rod, the limiting port in the extension part can be limited with the limiting convex ring, the extension part is prevented from being separated from the first rod, and then the lock body is prevented from being separated from the U-shaped body; and the safety of using the U-shaped lock by a user is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of U-shaped locks, in particular to an anti-slip U-shaped lock. Background Art

[0002] A U-shaped lock is a physical lock primarily used to lock bicycles, electric bikes, and double doors, providing a theft deterrent. Named for its U-shaped design, the U-shaped lock boasts a simple structure, ease of use, and excellent theft prevention.

[0003] A utility model patent with publication number CN219100999U in China discloses a novel U-shaped lock. The U-shaped lock disclosed in the patent has several drawbacks. For example, because the two straight rods of the U-shaped lock are of equal length, the lock body must be completely separated from the U-shaped body to be unlocked. When the lock body is separated from the U-shaped body, it can easily fall to the ground, causing damage to the ground, the lock body, or personnel. Furthermore, the separated lock body is easily lost.

[0004] Therefore, we propose an anti-drop U-shaped lock to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model provides an anti-drop U-shaped lock to solve the problems in the above background technology that the lock body is easy to fall to the ground and the separated lock body is easy to be lost.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An anti-slip U-shaped lock, comprising a U-shaped body and a lock body, wherein the U-shaped body comprises a first rod and a second rod, and the lock body is sleeved between the first rod and the second rod;

[0008] Wherein, the first rod and the second rod are respectively provided with a limiting convex ring and a sawtooth strip, and the lock body is provided with a guide through hole for the first rod and the second rod to pass through;

[0009] The limiting protrusion is provided on the same side as one of the guide through holes, and the diameter of the limiting protrusion is at least larger than one end of the guide through hole;

[0010] The lock body is provided with a mechanical password lock device, which includes a rotary lock core and a U-shaped lock tongue. A central shaft is provided on the central axis of the rotary lock core, and the U-shaped lock tongue is installed on one end of the central shaft.

[0011] The U-shaped locking tongue includes a locking portion and a connecting portion. The locking portion is provided with saw teeth that engage with the sawtooth bar and has an engaged state and a disengaged state.

[0012] Preferably, the guide through holes are respectively a circular through hole and a stepped through hole, the limiting protrusion is provided at the end of the first rod, the first rod passes through the circular through hole and the extension portion, and the second rod passes through the stepped through hole.

[0013] Preferably, the circular through hole has an open port and a limit port, the diameter of the limit convex ring is between the open port and the limit port, the lock body further has an extension portion, and the limit port is arranged in the extension portion.

[0014] Preferably, the open port is opened toward the limiting protruding ring, and the extension portion extends in a direction away from the limiting protruding ring.

[0015] Preferably, the diameter of the open port is larger than the limiting protruding ring, and the diameter of the limiting port is smaller than the limiting protruding ring.

[0016] Preferably, the rotary lock core is located between the first rod and the second rod, and the serrated bar is provided on the second rod and faces the rotary lock core.

[0017] Preferably, the central shaft is movably arranged on the central axis of the rotary lock core, and the other end of the U-shaped lock tongue passes through the stepped through hole.

[0018] Preferably, the end surface of the locking portion facing the second rod is provided with saw teeth that engage with the sawtooth bar.

[0019] Preferably, when the locking portion is in an engaged state with the serrated bar, the lock body is locked on the U-shaped body.

[0020] Preferably, the connecting portion passes around the second rod and is plugged with a button, and the other end of the button passes through the lock body and is slidably connected to the lock body.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] By arranging an extension part on the lock body, when the lock body is separated from the U-shaped body and unlocked, the lock body continues to slide on the U-shaped body through the extension part, and a limiting protrusion is provided on the first rod. The limiting port on the extension part can be limited by the limiting protrusion, thereby preventing the extension part from being separated from the first rod, and further preventing the lock body from being separated from the U-shaped body, thereby ensuring the safety of users using the U-shaped lock. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0024] Figure 2 for Figure 1 Cross-sectional view at AA'.

[0025] Figure 3 for Figure 1 Another perspective of the picture.

[0026] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the lock body of the utility model.

[0028] Figure 6 for Figure 5 Another perspective of the picture.

[0029] Figure 7 This is a schematic diagram of the internal structure of the lock body of the present utility model.

[0030] Figure 8 This is the unlocking state diagram of the present utility model.

[0031] In the figure: 100 - U-shaped body; 101 - first rod; 1011 - limiting convex ring; 102 - second rod; 1021 - serrated bar; 200 - lock body; 201 - rotary lock cylinder; 2011 - central axis; 202 - U-shaped lock tongue; 2021 - locking portion; 2022 - connecting portion; 203 - button; 204 - circular through hole; 2041 - opening port; 2042 - limiting port; 205 - stepped through hole; 206 - extension portion. DETAILED DESCRIPTION

[0032] See also Figures 1 to 8 :

[0033] The utility model provides an anti-drop U-shaped lock, comprising a U-shaped body 100 and a lock body 200. The U-shaped body 100 comprises a first rod 101 and a second rod 102. The lock body 200 is sleeved between the first rod 101 and the second rod 102. The first rod 101 and the second rod 102 are respectively provided with a limiting convex ring 1011 and a sawtooth bar 1021. The lock body 200 is provided with a guide through hole for the first rod 101 and the second rod 102 to pass through. The limiting convex ring 1011 is connected to one of the guide holes. It is arranged on the same side of the through hole, and the guide through hole has an open port 2041 and a limit port 2042, and the diameter of the limit protrusion 1011 is between the open port 2041 and the limit port 2042; the lock body 200 also has an extension portion 206, and the limit port 2042 is arranged in the extension portion 206; a mechanical password lock device is provided on the lock body 200, and the mechanical password lock device cooperates with the serrated bar 1021 to lock the lock body 200 on the U-shaped body 100.

[0034] In this embodiment, there is an arc portion between the first rod 101 and the second rod 102, and the ends of the first rod 101 and the ends of the second rod 102 are respectively connected to the two ends of the arc portion to form a U-shaped body 100; the lock body 200 is correspondingly sleeved on the first rod 101 and the second rod 102 through two guide through holes, and the lock body 200 can slide freely on the corresponding first rod 101 and the second rod 102 through the two guide through holes; wherein, a limiting convex ring 1011 is provided on the first rod 101, which is aligned with the first rod 101. An open port 2041 and a limit port 2042 are respectively provided at the two ends of the corresponding guide through hole, the open port 2041 is away from the arc portion of the U-shaped body 100, and the limit port 2042 is close to the arc portion of the U-shaped body 100; more specifically, since the first rod 101 and the second rod 102 are set to be of equal length, by providing an extension portion 206 on the lock body 200, the lengths of the two sides of the lock body 200 are not equal, and the lock body 200 can continue to slide on the other side after one side is separated from the U-shaped body 100. The portion 206 is close to the arcuate portion of the U-shaped body 100, and the limiting port 2042 is opened on the extended portion 206; further, the diameter of the limiting protrusion 1011 is between the open port 2041 and the limiting port 2042, that is, the diameter of the limiting protrusion 1011 can be less than or equal to the diameters of the open port 2041 and the limiting port 2042. When the diameter of the limiting protrusion 1011 is equal to that of the open port 2041, the outer wall of the limiting protrusion 1011 is clearance-matched with the open port 2041. So that the limiting protrusion ring 1011 can pass through the open port 2041; when the diameter of the limiting protrusion ring 1011 is equal to the limiting port 2042, the outer wall of the limiting protrusion ring 1011 is interference fit with the limiting port 2042, increasing the friction between the limiting protrusion ring 1011 and the limiting port 2042, so that the limiting protrusion ring 1011 is limited to the limiting port 2042; wherein, the relationship between the limiting port 2042 and the open port 2041 is: the limiting port 2042 is equal to or smaller than the open port 2041.

[0035] Among them, a serrated bar 1021 is provided on the second rod 102, and a mechanical password lock device is provided on the lock body 200. The mechanical password lock device extends into the guide through hole corresponding to the second rod 102, so that the lock body 200 can be locked by the mechanical password lock device and the serrated bar 1021.

[0036] When the U-shaped lock is unlocked, the lock body 200 is slid in the direction away from the arcuate portion of the U-shaped body 100, the serrated bar 1021 is separated from the mechanical combination lock device and opened, and the limiting port 2042 corresponding to the guide through hole of the first rod 101 can be engaged with the limiting convex ring 1011 of the first rod 101, thereby preventing the lock body 200 from sliding further; due to the extension portion 206 provided on the lock body 200, compared with the lock body 200 without the extension portion 206 in the prior art, the lock body 200 of the utility model can continue to slide on the first rod 101 after being completely separated from the second rod 102, and finally, the limiting convex ring 1011 on the first rod 101 is engaged with the limiting port 2042, preventing the lock body 200 from falling off from the first rod 101, thereby achieving the function of the lock body 200 not falling off after the lock body 200 is unlocked, thereby ensuring the safety of the user when unlocking.

[0037] In other embodiments (not shown), the first rod 101 and the second rod 102 can be configured as two straight rods of different lengths. A stop ring 1011 is provided at the end of the longer rod, and the diameter of the stop ring 1011 is larger than the diameter of the guide hole on the same side. Thus, without the extension 206 provided on the lock body 200, the lock body 200 can slide off the shorter rod and rotate along the longer rod. This prevents the lock body 200 from falling off the U-shaped member 100 when the U-shaped lock is unlocked.

[0038] In one embodiment, the guide through holes are respectively a circular through hole 204 and a stepped through hole 205 . The circular through hole 204 and the extension portion 206 are coaxially arranged. The open port 2041 and the limit port 2042 are arranged on the circular through hole 204 .

[0039] In this embodiment, the circular through hole 204 is coaxially arranged with the extension 206, so that the circular through hole 204 passes through the extension 206 on the same axis, which facilitates the smooth sliding of the lock body 200 on the first rod 101, ensuring that the lock body 200 can be smoothly unlocked and locked. Specifically, the opening port 2041 and the stop port 2042 are provided on the circular through hole 204. When the lock body 200 slides through the circular through hole 204 toward the stop ring 1011 of the first rod 101, the stop ring 1011 of the first rod 101 can pass through the opening port 2041 and then be stopped in the stop port 2042.

[0040] In one embodiment, the limiting protruding ring 1011 is provided at the end of the first rod 101 . The first rod 101 passes through the circular through hole 204 and the extension portion 206 , and the second rod 102 passes through the stepped through hole 205 .

[0041] In this embodiment, the first rod 101 passes through the circular through hole 204 and the extension 206, and the second rod 102 passes through the stepped through hole 205, so that the lock body 200 can be located on the first rod 101 and the second rod 102. Since the limiting protrusion 1011 is provided at the end of the first rod 101, when the lock body 200 slides on the first rod 101, the lock body 200 can slide to the end of the first rod 101, which is conducive to increasing the sliding distance of the lock body 200 until the limiting port 2042 of the lock body 200 is engaged with the limiting protrusion 1011, thereby being able to unlock the lock body 200 and the U-shaped body 100, and also prevent the lock body 200 from being separated from the U-shaped body 100.

[0042] In one embodiment, the open port 2041 is opened toward the limiting protruding ring 1011 , and the extension portion 206 extends away from the limiting protruding ring 1011 .

[0043] In this embodiment, the diameter of the open port 2041 can be larger than the diameter of the limiting protrusion 1011, and the diameter of the limiting port 2042 is smaller than the limiting protrusion 1011. With such a configuration, when the lock body 200 slides on the first rod 101 toward the limiting protrusion 1011, the open port 2041 of the lock body 200 can smoothly slide over the limiting protrusion 1011, thereby avoiding the open port 2041 from limiting the limiting protrusion 1011. After the open port 2041 slides over the limiting protrusion 1011, the lock body 200 continues to slide on the first rod 101 through the guide hole until the limiting port 2042 is engaged with the limiting protrusion 1011, thereby preventing the lock body 200 from sliding on the first rod 101. Among them, the extension portion 206 extends in a direction away from the limiting protrusion 1011, and the length of the guide through hole corresponding to the extension portion 206 extends to the extension portion 206, so that the lengths of the two guide through holes of the lock body 200 are different, and the length of the guide through hole extending to the extension portion 206 is longer. Such an arrangement allows, when the lock body 200 slides on the first rod 101 and the second rod 102, the lock body 200 can continue to slide on the first rod 101 after sliding away from the second rod 102, until the limiting protrusion 1011 of the first rod 101 limits the limiting port 2042 of the lock body 200, and the lock body 200 stops sliding.

[0044] The following is a detailed introduction to the structure of the mechanical password lock device:

[0045] In one embodiment, the mechanical combination lock device includes a rotary lock cylinder 201 and a U-shaped lock tongue 202 . The rotary lock cylinder 201 is located between the first rod 101 and the second rod 102 . The serrated bar 1021 is provided on the second rod 102 and faces the rotary lock cylinder 201 .

[0046] In this embodiment, a central axis 2011 is installed on the central axis of the rotary lock cylinder 201, one end of the U-shaped lock tongue 202 is installed on one end of the central axis 2011, and the other end of the U-shaped lock tongue 202 passes through the stepped through hole 205; wherein, the other end of the U-shaped lock tongue 202 is a U-shaped opening and faces the second rod 102, and the second rod 102 is located in the U-shaped opening of the U-shaped lock tongue 202 in the width direction, and the serrated bar 1021 is provided on the second rod 102. The lock body 200 is locked to the U-shaped body 100 by sliding the lock body 200 toward the arcuate portion of the U-shaped body 100. The lock body 200 is locked to the U-shaped body 100 through the cooperation between the U-shaped lock tongue 202 and the serrated bar 1021.

[0047] In one embodiment, the U-shaped locking tongue 202 includes a locking portion 2021 and a connecting portion 2022 . The locking portion 2021 has a sawtooth on its end surface facing the second rod 102 that engages with the sawtooth bar 1021 and has an engaged state and a disengaged state.

[0048] In this embodiment, there is a gap between the locking portion 2021 and the connecting portion 2022. The second rod 102 is located in the gap between the locking portion 2021 and the connecting portion 2022. The end surface of the locking portion 2021 can abut against the serrated strip 1021 of the second rod 102. By providing serrations on the end surface of the locking portion 2021, the serrations engage with the serrated strip 1021 to lock the lock body 200 and the second rod 102. When the locking portion 2021 and the serrated strip 1021 are disengaged, the lock body 200 is no longer locked, and the lock body 200 can slide on the U-shaped member.

[0049] It should be noted that in this utility model, both the rotary lock cylinder 201 and the central shaft 2011 are conventional. When the rotary lock cylinder 201 is rotated to the correct combination, the central shaft 2011 can move along its axis. Conversely, when the combination is incorrect, the central shaft 2011 remains fixed. The specific principles for achieving these actions will not be elaborated in this application.

[0050] In one embodiment, the connecting portion 2022 passes around the second rod 102 and is plugged with a button 203 . The other end of the button 203 passes through the lock body 200 and is slidably connected to the lock body 200 .

[0051] In this embodiment, the connecting portion 2022 bypasses the second rod 102, so that the end surface of the connecting portion 2022 does not contact the second rod 102, thereby facilitating the insertion of the button 203 into the connecting portion 2022. The other end of the button 203 extends through the lock body 200 and is slidably connected to the lock body 200, so that the other end of the button 203 is exposed outside the lock body 200, thereby facilitating the user to press the button 203. When the user needs to unlock or lock, since the button 203 is connected to the U-shaped lock tongue 202 of the mechanical combination lock device, pressing the button 203 can push the U-shaped lock tongue 202 to slide within the lock body 200. When the U-shaped lock tongue 202 is pushed to slide away from the serrated bar 1021, the locking portion 2021 and the serrated bar 1021 are disengaged, thereby entering a disengaged state. Therefore, by pressing the button 203 , the lock body 200 can be controlled to slide on the U-shaped body 100 , thereby improving the convenience of the user in operating the sliding of the lock body 200 .

Claims

1. An anti-drop U-shaped lock, comprising a U-shaped body (100) and a lock body (200), characterized in that: The U-shaped body (100) comprises a first rod (101) and a second rod (102), and the lock body (200) is sleeved between the first rod (101) and the second rod (102); The first rod (101) and the second rod (102) are respectively provided with a limiting convex ring (1011) and a sawtooth bar (1021), and the lock body (200) is provided with a guide through hole for the first rod (101) and the second rod (102) to pass through; The limiting convex ring (1011) is arranged on the same side as one of the guide through holes, and the diameter of the limiting convex ring (1011) is at least larger than one end of the guide through hole; The lock body (200) is provided with a mechanical password lock device, the mechanical password lock device comprising a rotary lock core (201) and a U-shaped lock tongue (202), a central axis (2011) is provided on the central axis of the rotary lock core (201), and the U-shaped lock tongue (202) is installed on one end of the central axis (2011); The U-shaped locking tongue (202) comprises a locking portion (2021) and a connecting portion (2022); the locking portion (2021) is provided with saw teeth that engage with the sawtooth bar (1021) and has an engaged state and a disengaged state.

2. The anti-drop U-shaped lock according to claim 1, characterized in that: The guide through holes are respectively a circular through hole (204) and a stepped through hole (205); the limiting convex ring (1011) is arranged at the end of the first rod (101) and is arranged on the same side as the circular through hole (204); the first rod (101) passes through the circular through hole (204), and the second rod (102) passes through the stepped through hole (205).

3. The anti-drop U-shaped lock according to claim 2, characterized in that: The circular through hole (204) has an open port (2041) and a limit port (2042); the diameter of the limit convex ring (1011) is between the open port (2041) and the limit port (2042); the lock body (200) further has an extension portion (206); and the limit port (2042) is arranged in the extension portion (206).

4. The anti-drop U-shaped lock according to claim 3, characterized in that: The open port (2041) is opened toward the limiting protruding ring (1011), and the extension portion (206) extends in a direction away from the limiting protruding ring (1011).

5. The anti-drop U-shaped lock according to claim 3 or 4, characterized in that: The diameter of the open port (2041) is larger than the limiting protruding ring (1011), and the diameter of the limiting port (2042) is smaller than the limiting protruding ring (1011).

6. The anti-drop U-shaped lock according to claim 1 or 2, characterized in that: The rotary lock core (201) is located between the first rod (101) and the second rod (102), and the sawtooth bar (1021) is arranged on the second rod (102) and faces the rotary lock core (201).

7. The anti-drop U-shaped lock according to claim 2, characterized in that: The central shaft (2011) is movably arranged on the central axis of the rotary lock core (201), and the other end of the U-shaped lock tongue (202) passes through the stepped through hole (205).

8. The anti-drop U-shaped lock according to claim 7, characterized in that: The end surface of the locking portion (2021) facing the second rod (102) is provided with saw teeth that engage with the sawtooth bar (1021).

9. The anti-drop U-shaped lock according to claim 8, characterized in that: When the locking portion (2021) and the sawtooth bar (1021) are in an engaged state, the lock body (200) is locked on the U-shaped body (100).

10. The anti-drop U-shaped lock according to claim 7, characterized in that: The connecting portion (2022) passes around the second rod (102) and is plugged with a button (203); the other end of the button (203) passes through the lock body (200) and is slidably connected to the lock body (200).

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