Buckle lock capable of keeping unlocking by pulling out key

Abstract

The utility model relates to the technical field of luggage locks, in particular to a padlock capable of keeping unlocking by pulling out a key, which comprises a lock main body and a lock catch assembly, the lock main body comprises a lock shell, a spring bolt, a limiting piece, a lock core and an unlocking block, during locking, a buckle plate is downwards buckled at the top of the lock shell, the spring bolt clamps a buckle head, and the limiting piece is located at a locking position to limit the spring bolt; a parking block is arranged in the lock shell, after the buckle head is separated from the spring bolt, the spring bolt is clamped at the unlocking position through the parking block, and meanwhile the limiting piece is clamped at the unlocking position through the spring bolt. The lock cylinder and the unlocking block can be independent of the lock tongue and the limiting piece to reset. During locking, the buckle head abuts against the parking block to relieve limiting of the spring bolt, and the spring bolt and the limiting piece are reset to the locking position. After the key is unlocked, the lock core is reset and the key is pulled out, the spring bolt is kept at the unlocking position, and the automatic locking function can be achieved after the buckle plate is locked for the second time. And when a key is used for unlocking, the rotation action of the lock core can drive the limiting piece to unlock and can also drive the lock tongue to unlock, operation is easy, and the use experience is improved.

Description

Technical Field

[0001] This utility model relates to the field of luggage lock technology, specifically to a latch that keeps the lock open when the key is removed. Background Technology

[0002] With the increasing demand for luggage for work, travel, and business trips, various types of bags have become increasingly important in people's lives. People often put valuables and documents in their bags for easy carrying. Therefore, the security and theft prevention of bags are receiving more and more attention, and bag locks have become an indispensable component of bags.

[0003] In existing technology, bag locks include a locking assembly, which includes a latch and a hook respectively installed on two opening sides of the bag, which interlock to lock each other. The bag lock also includes an operating component (which can be replaced by a push, button, knob, etc.), a locking mechanism, and a transmission component. The locking mechanism is a combination lock, a key lock cylinder, or NFC. The operating component is released only after the locking mechanism is unlocked with a combination, or after the correct key is inserted and turned, or after near-field electronic sensing is triggered. The operating component then drives the latch to rotate or slide via the transmission component, disengaging from the hook and achieving unlocking.

[0004] The key lock cylinder of a bag lock typically has a rotating lever at the bottom. Turning it releases the latch, unlocking the bag. This means that to remove the key, the lock cylinder must be turned back to the locked position. However, some applications require the latch to remain in the unlocked position after the key is removed, so that the latch can be inserted to lock the bag without a key. Traditional locks cannot meet these requirements.

[0005] Therefore, the inventor developed a flexible bag lock as disclosed in Chinese patent document CN221169096U, including a lock body and a lock hook. The lock body includes a lock shell, a lock catch, a key cylinder, and a limiting member. The lock catch and the limiting member are movably installed in the lock shell. The lock hook can be inserted into the lock shell and engaged with the lock catch. The lock catch is locked by the limiting member. External force can rotate the key cylinder to move the limiting member from the locked position to the unlocked position to release the restriction on the lock catch and unlock it. In the unlocking direction, the key cylinder can move the limiting member. In the locking direction, the key cylinder reset is independent of the limiting member reset. A stop member is also provided in the lock shell. When the limiting member moves to the unlocked position, the stop member automatically locks the limiting member, keeping the lock catch in the unlocked position, while the key cylinder can reset and the key can be removed. When the hook is inserted into the lock body, it can overcome the force of the stop and drive the limiting member to the locked position. Even without a key, the hook can be inserted to lock the lock. The latch extends partially outside the lock case as a button. A first spring is located at the bottom of the latch to maintain its locking tendency. After the limiting member releases the latch, pressing the button with external force will cause the hook to separate from the latch in the insertion / removal direction.

[0006] The aforementioned stop mechanism is suitable for horizontal latch locks, but not for locks that engage from top to bottom. Furthermore, after turning the key cylinder, the user needs to press an additional button to unlock the bag lock, which negatively impacts the user experience. Utility Model Content

[0007] In view of the above-mentioned technical problems, the present invention provides a latch that keeps the lock open when the key is pulled out.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A latch is provided that remains unlocked when the key is removed, including a lock body and a latch assembly.

[0010] The locking assembly includes a base and a buckle plate, one end of which is hinged to the base, and the other end of which is provided with a buckle head;

[0011] The lock body includes a lock shell, a bolt, a limiting member, a lock core, and an unlocking block. The bolt and the limiting member are slidably installed inside the lock shell. When locked, the buckle is snapped onto the top of the lock shell with the buckle facing downwards, and the bolt holds the buckle. The limiting member is in the locked position and limits the bolt.

[0012] The lock cylinder is rotatably mounted on the lock housing, and the unlocking block is fixed to the bottom of the lock cylinder. The unlocking block has a first actuating part and a second actuating part arranged in a circumferentially separated manner. When the key unlocks, the lock cylinder drives the unlocking block to rotate, causing the first actuating part to push the limiting member to the unlock position. As the lock cylinder continues to rotate, the second actuating part pushes the bolt to release the restriction on the latch.

[0013] The lock housing has a retaining block. After the buckle disengages from the bolt, the retaining block holds the bolt in the unlocked position, while the bolt holds the limiting piece in the unlocked position. The lock core and the unlocking block can be reset independently of the bolt and the limiting piece.

[0014] When locked, the buckle abuts against the locking block to release the lock tongue from its limit, and the lock tongue and the limiting component return to the locked position.

[0015] As a further optional solution, a first spring is provided between the base and the buckle to keep the buckle in a raised position; after the latch releases its restriction on the buckle, the buckle automatically rises.

[0016] As a further optional solution, the lock housing is provided with a second spring that applies a restoring force to the bolt, so that the bolt maintains a tendency to move in the locking direction; the lock housing is provided with a third spring that applies a restoring force to the limiting member, so that the limiting member maintains a tendency to move in the locking direction.

[0017] As a further optional solution, the sliding directions of the latch and the limiting member are perpendicular. The limiting member is provided with a limiting groove, and a stop part is provided on the side of the limiting groove. The latch is provided with a limiting protrusion. In the locked state, the limiting protrusion is embedded in the limiting groove to prevent the latch from sliding to unlock. In the unlocked state, the limiting protrusion is disengaged from the limiting groove and abuts against the stop part to prevent the limiting member from sliding to reset.

[0018] As a further alternative, the latch includes an integrally formed body and a tongue, the body having a clearance hole and the tongue extending into the clearance hole; a retaining block is mounted vertically in the clearance hole, and the lock housing has a fourth spring that applies force to the retaining block to keep the retaining block moving upward; in the locked state, the retaining block is located below the tongue; in the unlocked state, the retaining block is located to the side of the tongue to prevent the latch from resetting.

[0019] As a further optional feature, the top of the retaining block is provided with a guide groove for inserting the buckle.

[0020] As a further optional solution, the top of the lock housing is provided with a step, which includes a high surface and a low surface. The low surface is provided with a positioning boss, and the buckle is provided with a positioning hole. In the locked state, the positioning boss is embedded in the positioning hole. The top surface of the positioning boss, the side of the buckle, and the high surface are flush. The lock core is set on the high surface, and the tongue protrudes from the positioning boss to cooperate with the buckle.

[0021] As a further optional solution, the lock case is also equipped with a button, and a fifth spring is provided inside the lock case to apply an upward reset force to the button; the button is provided with a push part, and the lock tongue is provided with an unlocking ramp. When the button is pressed down by external force, the push part moves along the unlocking ramp and pushes the lock tongue in a direction perpendicular to the previous direction.

[0022] As a further alternative, the lock core is rotatably mounted on the button, with a fifth spring abutting against the unlocking block located at the bottom of the lock core.

[0023] As a further optional solution, the lock also includes a combination component, which includes a bracket, multiple combination wheels, and multiple switching wheels, all of which are rotatably mounted on the lock housing in a corresponding manner. The bracket is slidably mounted below the switching wheels, and the sliding direction of the bracket is parallel to that of the limiting member. Each switching wheel and the bracket have a convex-concave interlocking structure, and the lock housing has a sixth spring that applies force to the bracket. After the combination wheel rotates to the correct combination, the sixth spring drives the bracket to slide, and the bracket moves the limiting member to the unlocked position.

[0024] The beneficial effects of this utility model are:

[0025] This utility model discloses a latch that maintains the unlocked position after the key is removed. Compared with existing technologies, for latches that are engaged downwards, this invention allows the latch to remain in the unlocked position after the key is unlocked and the lock cylinder returns to its original position. It can then automatically lock again after the latch plate re-locks. Furthermore, when the key is unlocked, the rotation of the lock cylinder drives both the limiting component and the lock cylinder to unlock, simplifying operation and improving the user experience. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the latch structure in the embodiment, which is in a locked state.

[0027] Figure 2 This is a schematic diagram of the latch structure in the embodiment, showing it in the unlocked state.

[0028] Figure 3 This is an exploded view of the latch in the embodiment.

[0029] Figure 4 This is a schematic diagram of the internal structure of the lock body of the latch in the embodiment, which is in a locked state.

[0030] Figure 5 This is a schematic diagram of the internal structure of the lock body of the latch in the embodiment, in the key unlocked state.

[0031] Figure 6 for Figure 5 A structural diagram from another perspective.

[0032] Figure 7 This is a schematic diagram of the internal structure of the lock body in the embodiment, showing the state where the password unlock button is not pressed.

[0033] Figure 8 for Figure 7 A diagram from another perspective.

[0034] Figure label:

[0035] Locking assembly 1, base 11, buckle plate 12, buckle head 121, positioning hole 122;

[0036] Lock body 2;

[0037] Lock housing 3, high surface 31, low surface 32, positioning boss 33;

[0038] 4. Locking tongue, 41. Limiting protrusion, 42. Body part, 43. Displacement hole, 44. Tongue part, 45. Unlocking slope;

[0039] Limiting component 5, stop part 51, elongated groove 52, limiting groove 53;

[0040] Suo Ren 6;

[0041] Unlocking block 7, first toggle part 71, second toggle part 72;

[0042] Positioning block 8, guide groove 81;

[0043] Button 9, Push Part 91;

[0044] The cryptographic component 10, bracket 101, cryptographic wheel 102, code wheel 103, and convex-concave interlocking structure 104 are included. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] The latch in this embodiment, such as Figures 1 to 8 As shown, it includes a lock body 2 and a latch assembly 1. The latch assembly 1 includes a base 11 and a latch plate 12. One end of the latch plate 12 is hinged to the base 11, and the other end of the latch plate 12 is provided with a buckle 121.

[0047] The lock body 2 includes a lock shell 3, a bolt 4, a limiting member 5, a lock core 6, and an unlocking block 7. The bolt 4 and the limiting member 5 are slidably installed inside the lock shell 3. A second spring is provided inside the lock shell 3 to apply a restoring force to the bolt 4, so that the bolt 4 maintains a tendency to move in the locking direction (towards the combination wheel 102 in the figure). A third spring is provided inside the lock shell 3 to apply a restoring force to the limiting member 5, so that the limiting member 5 maintains a tendency to move in the locking direction, and remains in a position as shown. Figure 4 The state shown.

[0048] When locked, the snap plate 12 is snapped downwards onto the top of the lock housing 3, and the latch 4 engages with the buckle 121. The limiting member 5 is in the locked position, limiting the latch 4. The sliding directions of the latch 4 and the limiting member 5 are perpendicular. The limiting member 5 has a limiting groove 53, and a stop portion 51 is provided on the side of the limiting groove 53. The latch 4 has a limiting protrusion 41. In the locked state, the limiting protrusion 41 is embedded in the limiting groove 53 to prevent the latch 4 from sliding to unlock. In the unlocked state, the limiting protrusion 41 disengages from the limiting groove 53 and abuts against the stop portion 51, thus the limiting protrusion 41 of the latch 4 prevents the limiting member 5 from sliding back to its original position.

[0049] The lock cylinder 6 is rotatably mounted on the lock housing 3, and the unlocking block 7 is fixed to the bottom of the lock cylinder 6. The unlocking block 7 has a first actuating part 71 and a second actuating part 72 arranged circumferentially (at a 90° angle). When unlocking with a key, inserting the correct key into the lock cylinder 6 allows the lock cylinder 6 to be turned. The lock cylinder 6 drives the unlocking block 7 to rotate, causing the first actuating part 71 to push the limiting member 5 to the unlocked position. As the lock cylinder 6 continues to rotate, the second actuating part 72 pushes the bolt 4 to release the restraint on the latch 121. Figure 5The state shown is as follows. The limiting member 5 has an elongated groove 52, and the first actuating part 71 is located in the elongated groove 52. It can only push the limiting member 5 in one direction to unlock. When the unlocking block 7 resets, the limiting member 5 does not reset with it. That is, the lock core 6 and the unlocking block 7 can reset independently of the lock tongue 4 and the limiting member 5. A first spring is provided between the base 11 and the buckle plate 12, so that the buckle plate 12 is kept in a raised position. After the lock tongue 4 releases the restriction on the buckle head 121, the buckle plate 12 automatically rises.

[0050] The lock housing 3 is equipped with a retaining block 8. After the buckle 121 disengages from the bolt 4, the retaining block 8 holds the bolt 4 in the unlocked position, while the bolt 4 holds the limiting member 5 in the unlocked position. When locking, the buckle 121 abuts against the retaining block 8 to release the limiting effect on the bolt 4, and the bolt 4 and the limiting member 5 return to the locked position.

[0051] Specifically, the latch 4 includes a body portion 42 and a tongue portion 44 integrally formed with each other. The body portion 42 has a clearance hole 43, and the tongue portion 44 extends into the clearance hole 43. The retaining block 8 is mounted vertically in the clearance hole 43. The lock housing 3 is provided with a fourth spring that applies force to the retaining block 8 to keep the retaining block 8 moving upward. In the locked state, the retaining block 8 is located below the tongue portion 44. In the unlocked state, the retaining block 8 is located to the side of the tongue portion 44 to prevent the latch 4 from resetting.

[0052] Specifically, the top of the locking block 8 is provided with a guide groove 81 for the buckle head 121 to be inserted. When locked, the buckle body is inserted into the guide groove 81 and the tongue 44 is inserted into the opening of the buckle head 121.

[0053] Specifically, the top of the lock housing 3 is provided with a step, which includes a high surface 31 and a low surface 32. The low surface 32 is provided with a positioning boss 33, and the buckle plate 12 is provided with a positioning hole 122. In the locked state, the positioning boss 33 is embedded in the positioning hole 122. The top surface of the positioning boss 33, the side surface of the buckle plate 12 and the high surface 31 are flush. The lock core 6 is set on the high surface 31, and the tongue 44 protrudes from the positioning boss 33 to cooperate with the buckle head 121.

[0054] Specifically, the lock housing 3 also has a movable button 9, and a fifth spring inside the lock housing 3 applies an upward reset force to the button 9; the button 9 has a pushing part 91, and the lock tongue 4 has an unlocking ramp 45. When an external force presses down on the button 9, the pushing part 91 moves along the unlocking ramp 45, pushing the lock tongue 4 in a perpendicular direction. The lock core 6 is rotatably mounted on the button 9, and the fifth spring abuts against the unlocking block 7 located at the bottom of the lock core 6.

[0055] Specifically, the lock also includes a combination lock assembly 10, which includes a bracket 101, multiple combination wheels 102, and multiple dialing wheels 103. The combination wheels 102 and dialing wheels 103 are rotatably mounted on the lock housing 3, with some parts exposed for operation. The bracket 101 is slidably mounted below the dialing wheels 103, and the sliding direction of the bracket 101 is parallel to that of the limiting member 5. Each dialing wheel 103 and the bracket 101 have a convex-concave interlocking structure 104 (including a groove on the side of the dialing wheel 103 and a protrusion on the bracket 101). The lock housing 3 has a sixth spring that applies force to the bracket 101. After the combination wheel 102 rotates to the correct combination, the groove of the dialing wheel 103 aligns with the protrusion of the bracket 101, providing sliding space for the bracket 101. The sixth spring overcomes the force of the third spring and drives the bracket 101 to slide. The bracket 101 then moves the limiting member 5 to the unlocked position. Figure 7 As shown in the image, pressing button 9 will push the bolt 4 to unlock.

[0056] It should be noted that the individual springs are not shown in the diagram, but based on the text description, it can be understood that each spring is a compression spring. The diagram shows the pillars on which the springs are mounted.

[0057] In the description of this utility model, it is obvious that the described embodiments are only a part of the embodiments of this utility model, and not all of them. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0058] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0059] In the description of this utility model, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

Claims

1. A latch that remains unlocked when the key is removed, characterized in that: Including locks The main body (2) and the locking assembly (1) The locking assembly (1) includes a base (11) and a buckle plate (12). One end of the buckle plate (12) is hinged to the base (11), and the other end of the buckle plate (12) is provided with a buckle head (121). The lock body (2) includes a lock shell (3), a bolt (4), a limiting member (5), a lock core (6), and an unlocking block (7). The bolt (4) and the limiting member (5) are slidably installed inside the lock shell (3). When locked, the buckle plate (12) is attached to the top of the lock shell (3) with the bolt (4) facing down and the bolt (4) holds the buckle (121). The limiting member (5) is in the locked position and limits the bolt (4). The lock core (6) is rotatably mounted on the lock housing (3), and the unlocking block (7) is fixed to the bottom of the lock core (6). The unlocking block (7) is provided with a first actuating part (71) and a second actuating part (72) arranged in a circumferential direction. When the key unlocks, the lock core (6) drives the unlocking block (7) to rotate, causing the first actuating part (71) to push the limiting member (5) to the unlock position. As the lock core (6) continues to rotate, the second actuating part (72) pushes the bolt (4) to release the restriction on the buckle (121). The lock housing (3) is provided with a retaining block (8). After the buckle (121) disengages from the bolt (4), the retaining block (8) holds the bolt (4) in the unlocked position, and at the same time, the bolt (4) holds the limiting member (5) in the unlocked position; the lock core (6) and the unlocking block (7) can be reset independently of the bolt (4) and the limiting member (5); When locked, the buckle (121) abuts against the stationary block (8) to release the limit on the bolt (4), and the bolt (4) and the limiting member (5) are reset to the locked position.

2. The latch for retaining the unlocked position after the key is removed, as described in claim 1, is characterized in that: A first spring is provided between the base (11) and the buckle (12) so that the buckle (12) maintains a tilted tendency; after the latch (4) releases the restriction on the buckle (121), the buckle (12) tilts up automatically.

3. A latch for retaining the unlocked position after the key is removed, as described in claim 1, characterized in that: The lock housing (3) is provided with a second spring that applies a restoring force to the latch (4) so ​​that the latch (4) maintains a tendency to move in the upward locking direction; the lock housing (3) is provided with a third spring that applies a restoring force to the limiting member (5) so that the limiting member (5) maintains a tendency to move in the upward locking direction.

4. A latch that retains the unlocked position when the key is removed, as described in claim 1 or 3, characterized in that: The sliding directions of the latch (4) and the limiting member (5) are perpendicular. The limiting member (5) is provided with a limiting groove (53) and a stop part (51) is provided on the side of the limiting groove (53). The latch (4) is provided with a limiting protrusion (41). In the locked state, the limiting protrusion (41) is embedded in the limiting groove (53) to prevent the latch (4) from sliding to unlock. In the unlocked state, the limiting protrusion (41) is disengaged from the limiting groove (53) and abuts against the stop part (51) to prevent the limiting member (5) from sliding to reset.

5. A latch for retaining the unlocked position after the key is removed, as described in claim 1, characterized in that: The locking tongue (4) includes a body part (42) and a tongue part (44) integrally formed with each other. The body part (42) has a relief hole (43) and the tongue part (44) extends into the relief hole (43). The retaining block (8) is installed at the relief hole (43) and can move up and down. The lock case (3) is provided with a fourth spring that applies force to the retaining block (8) so that the retaining block (8) maintains an upward moving tendency. In the locked state, the retaining block (8) is located below the tongue part (44). In the unlocked state, the retaining block (8) is located to the side of the tongue part (44) to prevent the locking tongue (4) from resetting.

6. A latch for retaining the unlocked position after the key is removed, as described in claim 5, characterized in that: The top of the positioning block (8) is provided with a guide groove (81) for inserting the buckle (121).

7. A latch for retaining the lock when the key is removed, as described in claim 5, characterized in that: The top of the lock case (3) is provided with a step, which includes a high surface (31) and a low surface (32). The low surface (32) is provided with a positioning boss (33), and the buckle plate (12) is provided with a positioning hole (122). In the locked state, the positioning boss (33) is embedded in the positioning hole (122). The top surface of the positioning boss (33), the side surface of the buckle plate (12) and the high surface (31) are flush. The lock core (6) is set on the high surface (31), and the tongue (44) protrudes from the positioning boss (33) and cooperates with the buckle (121).

8. A latch for retaining the unlocked position after the key is removed, as described in claim 1, characterized in that: The lock case (3) is also equipped with a button (9), and a fifth spring is provided inside the lock case (3) to apply an upward reset force to the button (9); the button (9) is provided with a push part (91), and the lock tongue (4) is provided with an unlocking ramp (45). When the button (9) is pressed down by an external force, the push part (91) moves along the unlocking ramp (45) and pushes the lock tongue (4) in a direction perpendicular to the previous direction.

9. A latch for retaining the unlocked position after the key is removed, as described in claim 8, characterized in that: The lock core (6) is rotatably mounted on the button (9), and the fifth spring abuts against the unlocking block (7) located at the bottom of the lock core (6).

10. A latch for retaining the unlocked position after the key is removed, as described in claim 1, characterized in that: The lock also includes a combination component (10), which includes a bracket (101), multiple combination wheels (102) and multiple code-changing wheels (103). The multiple combination wheels (102) and multiple code-changing wheels (103) are mounted on the lock housing (3) in a one-to-one rotatable manner. The bracket (101) is slidably mounted below the code-changing wheels (103), and the sliding direction of the bracket (101) is parallel to that of the limiting member (5). Each code-changing wheel (103) and the bracket (101) are provided with a convex-concave interlocking structure (104). The lock housing (3) is provided with a sixth spring that applies force to the bracket (101). After the combination wheel (102) rotates to the correct combination, the sixth spring drives the bracket (101) to slide, and the bracket (101) drives the limiting member (5) to move to the unlock position.

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