U-shaped lock

Abstract

The invention discloses a U-shaped lock, and relates to the technical field of locksets, the U-shaped lock comprises a U-shaped ring, a sleeve, a lining, a lock cylinder and a lock brake linkage module, the sleeve sleeves the periphery of the lining, the lock cylinder and the lock brake linkage module are both installed in the lining, the sleeve is provided with through holes for the two ends of the U-shaped ring and a key to pass through, the middle of the lock brake linkage module is movably connected with the lock cylinder, and the lock brake linkage module is movably connected with the lock cylinder. The two ends of the lock brake linkage module are detachably connected with the two ends of the U-shaped ring correspondingly, and when a correct key is inserted into the lock cylinder and drives the lock cylinder to unlock, the lock cylinder can drive the lock brake linkage module to unlock the end of the U-shaped ring and enable the lock brake linkage module to eject the end of the U-shaped ring out of the lining, the end of the U-shaped ring is inserted into the lining in place, and then the U-shaped ring is locked. The end of the U-shaped ring can act on the lock brake linkage module, and the lock brake linkage module automatically locks the end of the U-shaped ring and resets the lock cylinder. The method is convenient to use, and the user experience can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of locks, in particular to a U-shaped lock. Background Art

[0002] In the prior art, U-shaped locks are widely used. After unlocking a traditional U-shaped lock with a key, the U-shaped ring needs to be manually removed. When locking is required, the U-shaped ring needs to be inserted into a fixed position of the lock body and the key needs to be manually locked before locking. Both the unlocking process and the locking process are relatively cumbersome to operate, resulting in a poor user experience. Summary of the invention

[0003] The purpose of the present invention is to provide a U-shaped lock to solve the problems existing in the above-mentioned prior art, which is easy to use and improves the user experience.

[0004] To achieve the above object, the present invention provides the following solutions: The present invention provides a U-shaped lock, comprising a U-shaped ring, a sleeve, a lining, a lock core and a lock gate linkage module, the sleeve being sleeved on the outer periphery of the lining, and the lock core and the lock gate linkage module being installed in the lining, the sleeve being provided with through holes for the two ends of the U-shaped ring and the passage of a key, the middle part of the lock gate linkage module being movably connected with the lock core, and the two ends of the lock gate linkage module being detachably connected to the two ends of the U-shaped ring respectively, when a correct key is inserted into the lock core and the lock core is driven to unlock, the lock core can drive the lock gate linkage module to unlock the end of the U-shaped ring, and enable the lock gate linkage module to pop the end of the U-shaped ring out of the lining, and insert the end of the U-shaped ring into place in the lining, the end of the U-shaped ring can act on the lock gate linkage module, and enable the lock gate linkage module to automatically lock the end of the U-shaped ring and reset the lock core.

[0005] Preferably, the gate locking linkage module includes a gate locking mechanism and two reset mechanisms, the gate locking mechanism and the reset mechanism are both installed in the lining, and the middle part of the gate locking mechanism is movably connected to the inner end of the lock core, the two ends of the gate locking mechanism are respectively detachably connected to the two ends of the U-shaped ring, the two reset mechanisms are respectively arranged corresponding to the two ends of the U-shaped ring, and one end of the reset mechanism is installed in the lining, and the other end of the reset mechanism is used to contact the end of the U-shaped ring, and the end of the U-shaped ring can drive the reset mechanism to deform when the end of the U-shaped ring is inserted into the lining, and when the gate locking mechanism releases the connection with the end of the U-shaped ring, the reset mechanism can reset and pop the end of the U-shaped ring out of the lining.

[0006] Preferably, the lock gate mechanism includes a lock gate reset element and two lock gate bodies, the first ends of the two lock gate bodies are close to each other, and the first ends of the two lock gate bodies are movably connected to the inner end of the lock core, the second ends of the two lock gate bodies are away from each other, and the second ends of the two lock gate bodies can be respectively connected to the two ends of the U-shaped ring, the two lock gate bodies are connected to the lock gate reset element, and when the lock core is unlocked with a correct key, the lock core can drive the two lock gate bodies to move in a direction close to each other, and make the second ends of the two lock gate bodies respectively detach from the two ends of the U-shaped ring, at this time, the lock gate reset element deforms and stores energy, and after the two ends of the U-shaped ring are inserted into place in the lining, the lock gate reset element resets and drives the two lock gate bodies to move in a direction away from each other, and makes the second ends of the two lock gate bodies respectively clamp the two ends of the U-shaped ring.

[0007] Preferably, an arc groove is provided at the first end of the lock gate body, and the arc groove openings on the two lock gate bodies are arranged facing each other, and two toggle columns are provided at the inner end of the lock core, and the two toggle columns correspond to the arc grooves on the two lock gate bodies one by one, and the toggle columns extend into the arc groove. When the lock gate body locks the end of the U-shaped ring, the two arc grooves are staggered. When the lock core is rotated to unlock, it can drive the two toggle columns to rotate, and make the two toggle columns act on the arc grooves respectively, so as to drive the two lock gate bodies to move in a direction close to each other through the two toggle columns.

[0008] Preferably, the second end of the locking gate body is provided with an arc-shaped slot, and the end side wall of the U-shaped ring is provided with a locking slot, and the arc-shaped slot can be engaged with the locking slot to enable the locking gate body to lock the end of the U-shaped ring.

[0009] Preferably, the lock gate resetting element includes a lock gate spring, and two ends of the lock gate spring are respectively connected to the two lock gate bodies.

[0010] Preferably, the gate resetting element includes two gate springs, and the two gate springs correspond one-to-one to the two gate bodies, one end of the gate spring is connected to the gate body, and the other end of the gate spring is connected to the lining.

[0011] Preferably, a mounting column is provided on the lock gate body, and one end of the lock gate spring is connected to one side of the mounting column.

[0012] Preferably, the reset mechanism includes a spring sleeve and a reset spring, and the lining is provided with a reset sleeve at a position corresponding to each of the reset springs, the reset spring and the spring sleeve are both located in the reset sleeve, and one end of the reset spring is connected to the sleeve, and the other end of the reset spring is connected to the spring sleeve, and the spring sleeve is used to contact the end of the U-shaped ring, and when the end of the U-shaped ring is inserted into the reset sleeve, it can drive the spring sleeve to compress the reset spring, and when the end of the U-shaped ring is inserted into the reset sleeve, the locking mechanism can lock the end of the U-shaped ring.

[0013] Preferably, it also includes an upper shell and a lower shell, the upper shell and the lower shell can be buckled together to form a accommodating cavity, the sleeve is located in the accommodating cavity, the upper shell is provided with external holes for inserting the key and the two ends of the U-shaped ring respectively, the upper shell is slidably connected to an opening and closing plate, and the opening and closing plate can slide to block or not block the external hole for inserting the key.

[0014] Compared with the prior art, the present invention has achieved the following technical effects: The U-shaped lock provided by the present invention has a sleeve sleeved on the outer periphery of the inner liner, and the lock core and the lock gate linkage module are both installed in the inner liner, the sleeve is provided with through holes for the two ends of the U-shaped ring and the passage of the key, the middle part of the lock gate linkage module is movably connected with the lock core, and the action of the lock core can be controlled by the key to realize the action of the lock gate linkage module to perform the unlocking action, the two ends of the lock gate linkage module are respectively detachably connected to the two ends of the U-shaped ring, and then when the two ends of the lock gate linkage module are respectively connected to the two ends of the U-shaped ring, the locking is realized to prevent the U-shaped ring from coming out through the inner liner, and the two ends of the lock gate linkage module are respectively connected to the two ends of the U-shaped ring. When the two ends of the U-shaped ring are separated, the lock is unlocked so that the U-shaped ring can be removed through the lining. When the correct key is inserted into the lock core and drives the lock core to unlock, the lock core can drive the lock gate linkage module to unlock the end of the U-shaped ring, and make the lock gate linkage module pop the end of the U-shaped ring out of the lining, so that the U-shaped ring is automatically popped out after unlocking, and there is no need to manually remove the U-shaped ring. When the U-shaped ring end is inserted into the lining in place, the U-shaped ring end can act on the lock gate linkage module, and make the lock gate linkage module automatically lock the end of the U-shaped ring and reset the lock core, so as to achieve automatic locking, which is easy to use and improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1It is a schematic diagram of the structure of the U-shaped lock in the present invention; Figure 2 It is a schematic diagram of the structure of the U-shaped lock of the present invention when the upper shell and the lower shell are removed; Figure 3 Schematic diagram of the internal structure of the U-shaped lock in the present invention; Figure 4 It is a schematic diagram of the connection between the lock core and the lock gate linkage module in the present invention; Figure 5 It is a schematic diagram of the setting position of the toggle column in the present invention; Figure 6 It is a schematic diagram of the positional relationship of the two lock gate bodies in the present invention; Figure 7 It is a schematic diagram of the structure of the U-shaped ring in the present invention; Figure 8 It is a structural schematic diagram of the lock gate body in the present invention; In the figure: 1-upper shell, 2-lower shell, 3-U-shaped ring, 4-outer hole, 5-opening and closing plate, 6-sleeve, 7-through hole, 8-lining, 9-lock cylinder, 10-reset sleeve, 11-reset spring, 12-spring sleeve, 13-lock gate body, 14-lock gate spring, 15-sliding column, 16-arc groove, 17-locking slot, 18-arc slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The purpose of the present invention is to provide a U-shaped lock to solve the problems existing in the prior art, which is easy to use and improves the user experience.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 8As shown, the present embodiment provides a U-shaped lock, comprising a U-shaped ring 3, a sleeve 6, an inner lining 8, a lock core 9 and a lock gate linkage module. The sleeve 6 is sleeved on the outer periphery of the inner lining 8, and the lock core 9 and the lock gate linkage module are both installed in the inner lining 8. The sleeve 6 is provided with through holes 7 for the two ends of the U-shaped ring 3 and the key to pass through. The middle part of the lock gate linkage module is movably connected with the lock core 9, so that the action of the lock core 9 can be controlled by the key to realize the action of the lock gate linkage module to perform the unlocking action. The two ends of the lock gate linkage module are detachably connected to the two ends of the U-shaped ring 3 respectively, and then when the two ends of the lock gate linkage module are respectively connected to the two ends of the U-shaped ring 3, locking is realized to prevent the U-shaped ring 3 from coming off through the inner lining 8. When the two ends of the lock gate linkage module are separated from the two ends of the U-shaped ring 3 respectively, the lock is unlocked, so that the U-shaped ring 3 can be removed through the lining 8. When the correct key is inserted into the lock core 9 and the lock core 9 is driven to unlock, the lock core 9 can drive the lock gate linkage module to unlock the end of the U-shaped ring 3, and make the lock gate linkage module pop the end of the U-shaped ring 3 out of the lining 8, so as to realize the automatic pop-up of the U-shaped ring 3 after unlocking, without the need to manually remove the U-shaped ring 3. When the end of the U-shaped ring 3 is inserted into the lining 8 in place, the end of the U-shaped ring 3 can act on the lock gate linkage module, and make the lock gate linkage module automatically lock the end of the U-shaped ring 3, and reset the lock core 9, so as to realize automatic locking, which is easy to use and improves the user experience.

[0021] Specifically, the gate locking linkage module includes a gate locking mechanism and two reset mechanisms, both of which are installed in the lining 8, and the middle part of the gate locking mechanism is movably connected to the inner end of the lock core 9, so as to move under the control of the lock core 9, and the two ends of the gate locking mechanism are detachably connected to the two ends of the U-shaped ring 3 respectively, and then the connection and disconnection with the U-shaped ring 3 are realized through the action of the gate locking mechanism, and the two reset mechanisms are respectively arranged corresponding to the two ends of the U-shaped ring 3, and then can act on the two ends of the U-shaped ring 3 respectively, one end of the reset mechanism is installed in the lining 8, and the other end of the reset mechanism is used to contact the end of the U-shaped ring 3, and when the end of the U-shaped ring 3 is inserted into the lining 8, it can drive the reset mechanism to deform, and when the gate locking mechanism releases the connection with the end of the U-shaped ring 3, the reset mechanism can reset and pop the end of the U-shaped ring 3 out of the lining 8, so as to realize the automatic pop-up of the U-shaped ring 3 after unlocking.

[0022] The lock gate mechanism includes a lock gate reset element and two lock gate bodies 13. The first ends of the two lock gate bodies 13 are close to each other, and the first ends of the two lock gate bodies 13 are movably connected to the inner end of the lock core 9, so that the lock core 9 can act on the first ends of the two lock gate bodies 13 at the same time, so that the two lock gate bodies 13 act at the same time, and the second ends of the two lock gate bodies 13 are far away from each other, and the second ends of the two lock gate bodies 13 can be respectively connected to the two ends of the U-shaped ring 3, so as to realize the limited connection with the U-shaped ring 3. The two lock gate bodies 13 are connected to the lock gate reset element, and when the lock core 9 is unlocked with the correct key, the lock core 9 is unlocked. 9 can rotate and drive the two lock gate bodies 13 to move in the direction of approaching each other, and make the second ends of the two lock gate bodies 13 respectively detach from the two ends of the U-shaped ring 3, so as to unlock the U-shaped ring 3. At this time, since the lock gate body 13 acts on the lock gate reset element when it moves, the lock gate reset element is deformed and stores energy. In this embodiment, it is preferred that the lock gate reset element is extended to store energy. After the two ends of the U-shaped ring 3 are inserted into place in the lining 8, the lock gate reset element is reset and drives the two lock gate bodies 13 to move in the direction of moving away from each other, and make the second ends of the two lock gate bodies 13 respectively clamp the two ends of the U-shaped ring 3, so as to lock the U-shaped ring 3.

[0023] The first end of the lock gate body 13 is provided with an arc groove 16, and the openings of the arc grooves 16 on the two lock gate bodies 13 are arranged to face each other. The inner end of the lock core 9 is provided with two toggle columns 15, and the two toggle columns 15 correspond to the arc grooves 16 on the two lock gate bodies 13 one by one, and the toggle columns 15 extend into the arc grooves 16, and then can act on each arc groove 16 through the revolution of the two toggle columns 15 to drive the lock gate body 13 to move. When the lock gate body 13 locks the end of the U-shaped ring 3, the two arc grooves 16 are staggered. When the lock core 9 is rotated to unlock, it can drive the two toggle columns 15 to rotate, and make the two toggle columns 15 act on the arc grooves 16 respectively to drive the two arc grooves 16 to move in directions approaching each other, so as to realize that the two lock gate bodies 13 are driven to move in directions approaching each other by the two toggle columns 15, and finally the lock gate body 13 is separated from the U-shaped ring 3 to achieve unlocking. At the same time, through the cooperation between the toggle column 15 and the arc groove 16, the lock core 9 can be prevented from being opened when it is subjected to vibration, which is safe, reliable, and not easy to crack, thereby realizing anti-impact unlocking. Through the above design, compared with the technical solution that the traditional lock gate and the traditional lock core are linked by spring elasticity, and the traditional lock gate retracts due to gravity when the elastic force is impacted in the reverse direction, the U-shaped lock in this embodiment connects the lock gate body 13 with the lock core 9 by restrictive connection (that is, through the cooperation of the toggle column 15 and the arc groove 16), and then when the correct key is not inserted into the lock core 9, the lock core 9 cannot rotate, so the lock gate body 13 is also fixed and cannot retract, and then even when the elastic force impacts in the reverse direction, the lock cannot be unlocked.

[0024] An arc-shaped slot 18 is provided at the second end of the locking gate body 13, and a locking slot 17 is provided at the end side wall of the U-shaped ring 3. The arc-shaped slot 18 can be engaged with the locking slot 17 to achieve mutual limitation of the arc-shaped slot 18 and the locking slot 17, so as to realize locking of the end of the U-shaped ring 3 by the locking gate body 13, thereby ensuring that the U-shaped ring 3 cannot fall out of the lining 8 in the locked state.

[0025] As an embodiment, the lock gate resetting element includes a lock gate spring 14 , and two ends of the lock gate spring 14 are respectively connected to the two lock gate bodies 13 .

[0026] As another embodiment, the gate resetting element includes two gate springs 14, and the two gate springs 14 correspond one-to-one to the two gate bodies 13, one end of the gate spring 14 is connected to the gate body 13, and the other end of the gate spring 14 is connected to the lining 8. Preferably, the two gate springs 14 are fixed to the lining 8 at one end away from each other, and the two gate springs 14 are respectively connected to the two gate bodies 13 at one end close to each other.

[0027] As another embodiment, the lock gate resetting element includes two torsion springs, and the two torsion springs are connected to the lock core 9. The torsion springs act on the lock core 9, and the lock core 9 is directly driven to rotate by the torsion springs.

[0028] A mounting post is provided on the lock gate body 13 , and one end of the lock gate spring 14 is connected to one side of the mounting post, so as to realize the connection between the lock gate body 13 and the lock gate spring 14 .

[0029] The reset mechanism includes a spring sleeve 12 and a reset spring 11. The liner 8 is provided with a reset sleeve 10 at a position corresponding to each reset spring 11. The reset spring 11 and the spring sleeve 12 are both located in the reset sleeve 10, and then the reset sleeve 10 compresses and resets the reset spring 11, and guides the end of the U-shaped ring 3. One end of the reset spring 11 is connected to the sleeve 6, and the other end of the reset spring 11 is connected to the spring sleeve 12. The reset sleeve 10 is arranged to avoid the locking groove 17, and after the U-shaped ring 3 is inserted into place, the locking groove 17 is located on the side of the reset sleeve 10 away from the fixed end of the reset spring 11. The spring sleeve 12 is used to contact the end of the U-shaped ring 3, and the end of the U-shaped ring 3 is inserted into the reset sleeve. 10, it can drive the spring sleeve 12 to compress the reset spring 11, so as to realize the energy storage of the reset spring 11, and before the U-shaped ring 3 is inserted into place, the arc groove 18 arranged at the second end of the lock gate body 13 is limited by the side wall of the U-shaped ring 3 and cannot rebound. When the end of the U-shaped ring 3 is inserted into place in the reset sleeve 10, the arc groove 18 arranged at the second end of the lock gate body 13 is aligned with the locking groove 17 arranged at the end of the U-shaped ring 3. At this time, the arc groove 18 arranged at the second end of the lock gate body 13 is no longer restricted, and then resets under the action of the elastic restoring force of the lock gate spring 14, and the arc groove 18 is clamped with the locking groove 17, so that the lock gate mechanism locks the end of the U-shaped ring 3 and realizes automatic locking.

[0030] The present embodiment further comprises an upper shell 1 and a lower shell 2, which can be buckled together to form a receiving cavity, in which a sleeve 6 is located, and an outer hole 4 for inserting a key and two ends of a U-shaped ring 3 is provided on the upper shell 1, and an opening and closing plate 5 is slidably connected to the upper shell 1, and the opening and closing plate 5 can slide to block or not block the outer hole 4 for inserting a key. When the key is not needed to be inserted into the outer hole 4, the opening and closing plate 5 is used to block the outer hole 4 to prevent debris from entering the outer hole 4 and causing blockage. When the key is needed to be inserted into the outer hole 4, the opening and closing plate 5 is directly not blocked from the outer hole 4, which is convenient to use.

[0031] Through the above design, in this embodiment, when the correct key is inserted into the outer end of the lock core 9 and the lock core 9 is rotated clockwise, the toggle column 15 set at the inner end of the lock core 9 acts on the two lock gate bodies 13, so that the two lock gate bodies 13 move towards each other until the arc-shaped groove 18 on the lock gate body 13 is disengaged from the locking groove 17 at the upper end of the U-shaped ring 3. At this time, the lock gate spring 14 is in a compressed state. At the same time, since the lock gate body 13 releases the restriction on the end of the U-shaped ring 3, the spring sleeve 12 pushes the U-shaped ring 3 to pop out of the inner lining 8 under the action of the elastic restoring force of the reset spring 11, thereby realizing automatic unlocking. At the same time, since the outer ring of the spring sleeve 12 is provided with a limiting protrusion, The spring sleeve 12 is limited in the lining 8 by the limiting protrusion and stops at a specified position; after the unlocking action is completed, the hand leaves the key and the key remains on the lock cylinder 9. At this time, the lock gate body 13 drives the lock cylinder 9 to reset under the action of the elastic restoring force of the lock gate spring 14. Since the lock gate body 13 is blocked by the spring sleeve 12 in the reset direction, the lock gate body 13 is in a semi-reset state. Based on this, the channel in the reset sleeve 10 will not be blocked by the lock gate body 13, and the U-shaped ring 3 can be allowed to be directly inserted when the lock is closed next time. At the same time, due to the connection relationship between the lock cylinder 9 and the lock gate body 13, the lock cylinder 9 is also in a semi-reset state, so the key remains on the lock cylinder 9 and cannot be pulled out.

[0032] On the other hand, when locking, the U-shaped ring 3 is inserted into the reset sleeve 10 and pushes the spring sleeve 12 to move into the reset sleeve 10. Since the U-shaped ring 3 and the spring sleeve 12 are tightly attached to form a whole under the action of the reset spring 11 when inserted, when the U-shaped ring 3 is not inserted into the specified position in the reset sleeve 10, the lock gate body 13 cannot be completely reset due to the obstruction of the side wall of the U-shaped ring 3. When the U-shaped ring 3 continues to extend until the locking groove 17 corresponds to the position of the arc groove 18, the position obstruction of the arc groove 16 of the lock gate body 13 disappears, and the lock gate body 13 is reset by the elastic restoring force of the lock gate spring 14. The lock gate body 13 drives the lock core 9 to automatically reset completely, thereby realizing the locking function. At this time, the key can be pulled out.

[0033] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A U-shaped lock, characterized in that: The invention comprises a U-shaped ring, a sleeve, a liner, a lock core and a lock gate linkage module, the sleeve being sleeved on the outer periphery of the liner, and the lock core and the lock gate linkage module being both installed in the liner, the sleeve being provided with through holes for the two ends of the U-shaped ring and the passage of a key, the middle part of the lock gate linkage module being movably connected with the lock core, and the two ends of the lock gate linkage module being detachably connected with the two ends of the U-shaped ring respectively. When a correct key is inserted into the lock core and the lock core is driven to unlock, the lock core can drive the lock gate linkage module to unlock the end of the U-shaped ring, and enable the lock gate linkage module to pop the end of the U-shaped ring out of the liner, and insert the end of the U-shaped ring into place in the liner, the end of the U-shaped ring can act on the lock gate linkage module, and enable the lock gate linkage module to automatically lock the end of the U-shaped ring and reset the lock core.

2. The U-shaped lock according to claim 1, characterized in that: The gate locking linkage module includes a gate locking mechanism and two reset mechanisms, both of which are installed in the lining, and the middle part of the gate locking mechanism is movably connected to the inner end of the lock core, and the two ends of the gate locking mechanism are detachably connected to the two ends of the U-shaped ring respectively, and the two reset mechanisms are respectively arranged corresponding to the two ends of the U-shaped ring, and one end of the reset mechanism is installed in the lining, and the other end of the reset mechanism is used to contact the end of the U-shaped ring, and the end of the U-shaped ring can drive the reset mechanism to deform when the end of the U-shaped ring is inserted into the lining, and when the gate locking mechanism releases the connection with the end of the U-shaped ring, the reset mechanism can reset and pop the end of the U-shaped ring out of the lining.

3. The U-shaped lock according to claim 2, characterized in that: The lock gate mechanism includes a lock gate reset element and two lock gate bodies, the first ends of the two lock gate bodies are close to each other, and the first ends of the two lock gate bodies are movably connected to the inner end of the lock core, the second ends of the two lock gate bodies are away from each other, and the second ends of the two lock gate bodies can be respectively connected to the two ends of the U-shaped ring, the two lock gate bodies are connected to the lock gate reset element, and when the lock core is unlocked with a correct key, the lock core can drive the two lock gate bodies to move in a direction close to each other, and make the second ends of the two lock gate bodies respectively separate from the two ends of the U-shaped ring, at this time, the lock gate reset element deforms and stores energy, after the two ends of the U-shaped ring are inserted into place in the lining, the lock gate reset element resets and drives the two lock gate bodies to move in a direction away from each other, and makes the second ends of the two lock gate bodies respectively clamp the two ends of the U-shaped ring.

4. The U-shaped lock according to claim 3, characterized in that: The first end of the lock gate body is provided with an arc groove, and the openings of the arc grooves on the two lock gate bodies are arranged to face each other. The inner end of the lock core is provided with two toggle posts, and the two toggle posts correspond to the arc grooves on the two lock gate bodies one by one, and the toggle posts extend into the arc grooves. When the lock gate body locks the end of the U-shaped ring, the two arc grooves are staggered. When the lock core is rotated to unlock, it can drive the two toggle posts to rotate, and make the two toggle posts act on the arc grooves respectively, so as to drive the two lock gate bodies to move in a direction close to each other through the two toggle posts.

5. The U-shaped lock according to claim 3, characterized in that: The second end of the lock gate body is provided with an arc-shaped slot, and the end side wall of the U-shaped ring is provided with a locking slot. The arc-shaped slot can be engaged with the locking slot, and the lock gate body locks the end of the U-shaped ring.

6. The U-shaped lock according to claim 3, characterized in that: The lock gate resetting element includes a lock gate spring, and two ends of the lock gate spring are respectively connected to the two lock gate bodies.

7. The U-shaped lock according to claim 3, characterized in that: The lock gate resetting element includes two lock gate springs, and the two lock gate springs correspond to the two lock gate bodies one by one, one end of the lock gate spring is connected to the lock gate body, and the other end of the lock gate spring is connected to the lining.

8. The U-shaped lock according to claim 7, characterized in that: The lock gate body is provided with a mounting column, and one end of the lock gate spring is connected to one side of the mounting column.

9. The U-shaped lock according to claim 2, characterized in that: The reset mechanism includes a spring sleeve and a reset spring. The liner is provided with a reset sleeve at a position corresponding to each of the reset springs. The reset spring and the spring sleeve are both located in the reset sleeve, and one end of the reset spring is connected to the sleeve, and the other end of the reset spring is connected to the spring sleeve. The spring sleeve is used to contact the end of the U-shaped ring. When the end of the U-shaped ring is inserted into the reset sleeve, it can drive the spring sleeve to compress the reset spring. When the end of the U-shaped ring is inserted into the reset sleeve, the locking mechanism can lock the end of the U-shaped ring.

10. The U-shaped lock according to claim 1, characterized in that: It also includes an upper shell and a lower shell, which can be buckled together to form a accommodating cavity, the sleeve is located in the accommodating cavity, the upper shell is provided with external holes for inserting the key and the two ends of the U-shaped ring respectively, the upper shell is slidably connected to an opening and closing plate, and the opening and closing plate can slide to block or not block the external hole for inserting the key.

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