Self-elastic lock structure with lock plunger capable of being separated from upper connecting rod and lower connecting rod for locking

Abstract

The invention relates to the technical field of locks, in particular to a self-elastic lock structure with a lock plunger capable of being separated from an upper connecting rod and a lower connecting rod for locking. The self-popping lock structure with the lock plunger capable of being separated from the upper connecting rod and the lower connecting rod for locking comprises a driving fluted disc set which is arranged in a lock shell and has an unlocking action and a back locking action so as to drive a connecting rod assembly to retract into or pop out of the lock shell; the back locking assembly is arranged in the lock shell, the back locking assembly comprises a back locking tooth piece and a first elastic piece, the back locking tooth piece is meshed with one fluted disc in the driving fluted disc set, and the first elastic piece is connected with the back locking tooth piece; the lock plunger assembly is arranged in the lock shell, and the driving fluted disc set is connected with the lock plunger assembly so as to drive the lock plunger assembly to retract or pop out of the lock shell during unlocking action and counter locking action; when the driving fluted disc set conducts back locking action, the first elastic piece is used for providing elastic driving force for the back locking tooth piece, so that the back locking tooth piece drives the driving fluted disc set to rotate in a back locking mode.

Description

Technical Field

[0001] This invention relates to the field of lock technology, specifically to a self-locking structure in which the bolt can be detached from the upper and lower connecting rods for locking. Background Technology

[0002] Self-locking locks, due to their convenience, are widely used in door and window locking devices in various scenarios such as residential homes, commercial buildings, and industrial equipment. They are one of the core components for ensuring space safety and ease of use.

[0003] In existing technologies, the upper and lower connecting rods, as well as the bolt and gear assembly mechanism, generally adopt a series linkage structure design. This means that during the locking process, the upper and lower connecting rods, bolt, and gear assembly mechanism remain linked and cannot be separated. However, the direct drawback of this series linkage structure is that when the upper and lower connecting rods encounter resistance or obstacles during their self-ejection process (such as jamming by foreign objects or installation misalignment), their movement is restricted. This prevents the gear assembly mechanism from continuing to move, ultimately causing the bolt to fail to extend properly and preventing the lock from locking itself, severely impacting the safety and reliability of the lock. Summary of the Invention

[0004] This invention provides a self-locking structure in which the bolt can be detached from the upper and lower connecting rods for locking. This solves the problem that when the upper and lower connecting rods encounter resistance or obstacles during the ejection process, the movement of the upper and lower connecting rods will be restricted, which in turn prevents the gear plate assembly mechanism from continuing to move, ultimately causing the bolt to fail to extend normally and the lock body to fail to complete the anti-locking operation.

[0005] This invention provides a self-locking structure in which the bolt can be detached from the upper and lower connecting rods for locking, comprising:

[0006] A drive gear assembly is disposed within a lock housing. The drive gear assembly has an unlocking action and a locking action to drive the linkage assembly to retract or eject from the lock housing. A deadbolt assembly is disposed within a lock housing. The deadbolt assembly includes a deadbolt tooth and a first elastic element. The deadbolt tooth meshes with one of the toothed discs in the drive toothed disc assembly. The first elastic element is connected to the deadbolt tooth. A bolt assembly is disposed within a lock housing, and a drive gear assembly is connected to the bolt assembly to drive the bolt assembly to retract or eject from the lock housing during unlocking and locking actions. When the drive gear assembly performs a reverse locking action, the first elastic element provides an elastic driving force to the reverse locking tooth, so that the reverse locking tooth drives the drive gear assembly to rotate in reverse lock.

[0007] Beneficial effects: By incorporating a deadbolt assembly, when the drive gear assembly encounters resistance or obstacles and cannot continue moving, the deadbolt teeth and the first elastic element can provide additional driving force to the drive gear assembly, ensuring that the drive gear assembly completes the deadbolt action, thereby improving the reliability and security of the lock. Simultaneously, it avoids the problem of the bolt failing to extend properly due to restricted movement of the upper and lower linkages, enhancing the practicality and stability of the lock.

[0008] In one optional embodiment, the drive gear assembly includes a first gear and a second gear. The first gear meshes with the connecting rod assembly, and the second gear meshes with the anti-locking gear. The first gear has a paddle, and the second gear has a push rod structure that abuts against the paddle. The push rod structure cooperates with the bolt assembly. During the anti-locking action, the first gear rotates in a first direction, and the paddle abuts against the push rod structure, driving the second gear to rotate in the first direction. Simultaneously, the anti-locking gear drives the second gear to rotate in the first direction. During the unlocking action, the second gear rotates in a second direction opposite to the first direction, and the push rod structure abuts against the paddle, driving the first gear to rotate in the second direction.

[0009] Beneficial effects: Through the coordinated operation of the first and second gear discs, and the cooperation of the paddle and push rod structure, the drive gear disc assembly achieves smooth operation during locking and unlocking. Especially during locking, even if the first gear disc encounters resistance or obstacles, the second gear disc can still complete the locking action under the drive of the locking teeth and the first elastic element, ensuring the reliability and security of the lock.

[0010] In one alternative embodiment, the second gear has an extension, the push rod structure includes a stroke pin and a stroke sleeve, the extension has a connecting hole, one end of the stroke pin is fixed in the connecting hole, the stroke sleeve is sleeved on the outer surface of the stroke pin, and the stroke sleeve abuts against the paddle.

[0011] Beneficial effects: By incorporating an extension, a stroke pin, and a stroke bushing, the push rod structure can stably engage with the paddle, and when the first gear rotates, the paddle applies a thrust to the push rod structure, thereby driving the second gear to rotate. This not only improves the transmission efficiency of the drive gear assembly but also enhances the stability and reliability of the structure.

[0012] In one alternative embodiment, the bolt assembly includes a bolt plate and a bolt, the bolt plate being movably disposed within the lock housing, the lock housing having a bolt protrusion opening, the bolt being disposed on the side of the bolt plate facing the bolt protrusion opening, the bolt plate having a drive portion, and a push rod structure cooperating with the drive portion to drive the bolt plate to move, causing the bolt to retract or eject from the lock housing.

[0013] Beneficial effects: By cooperating with the push rod structure and the drive unit, the drive gear assembly directly drives the bolt plate, enabling the bolt to accurately retract or eject from the lock housing as the drive gear assembly rotates. This not only simplifies the transmission structure and improves transmission efficiency but also enhances the accuracy and reliability of the bolt movement, further improving the overall performance of the lock.

[0014] In one optional embodiment, the driving part is a toggle groove, and the push rod structure is slidably disposed in the toggle groove. The toggle groove has a first position and a second position. When the push rod structure slides from the first position to the second position, it is an unlocking action. When the push rod structure slides from the second position to the first position, it is a locking action.

[0015] Beneficial effects: By designing the drive unit as a sliding groove and allowing the push rod structure to slide within the sliding groove, precise motion control of the bolt plate during unlocking and locking actions is achieved. This not only simplifies the transmission structure and reduces the number of parts, but also makes the bolt movement smoother and more stable.

[0016] In one optional embodiment, the bolt includes a bolt housing and a pair of hook bolts. The bolt housing is fixed to the bolt plate and has a cavity. The bolt housing has openings on both sides. The pair of hook bolts are respectively disposed on both sides of the bolt housing. The hook bolts are rotatably connected to the bolt housing so as to retract or eject the bolt housing during unlocking and locking actions.

[0017] Beneficial effects: By incorporating a pair of rotatable hook bolts, the bolts can pop out from both sides during the deadbolt action, enhancing the lock's anti-theft performance. Simultaneously, during the unlocking action, the hook bolts can quickly retract into the bolt housing, preventing them from colliding with the door frame or other objects during opening, thus improving the lock's ease of use and security.

[0018] In one optional embodiment, the hook bolt has a circular hole, the bolt plate has a first fixing pin, one end of the first fixing pin is fixedly connected to the bolt plate, and the other end of the first fixing pin is fixedly connected to the bolt housing. The hook bolt is sleeved on the first fixing pin through the circular hole. The hook bolt has a pressing protrusion, which is used to abut against the side wall of the bolt housing when the bolt housing extends out of the bolt housing to provide a biasing force for the hook bolt to pop out of the bolt housing. The bolt also includes a second elastic element, which provides a biasing force for the hook bolt to retract into the bolt housing when the bolt housing retracts into the bolt housing.

[0019] Beneficial effects: By incorporating a pressing protrusion and a second elastic element, the hook bolt can be smoothly ejected during the locking action and automatically retracted during the unlocking action. It does not require the bolt to be passively retracted by hitting the lock body panel, thus avoiding the problem of the hook bolt getting stuck or jammed and unable to be opened, and enhancing the practicality and security of the lock.

[0020] In one alternative embodiment, the bolt plate has a second fixing pin disposed between a pair of hook bolts, the second elastic element is a torsion spring sleeved on the second fixing pin, the hook bolt has a torsion spring groove, and the lever arm of the torsion spring is disposed within the torsion spring groove.

[0021] Beneficial effects: By employing a torsion spring as the second elastic element and fitting it onto the second fixing pin located between a pair of hook bolts, the structure is simplified, and it is ensured that the torsion spring can simultaneously and evenly apply elastic biasing force to the two hook bolts. Once the biasing force between the impact protrusion and the lock housing sidewall disappears, the torsion spring can respond quickly, driving the hook bolts to retract smoothly and reliably into the lock housing, effectively preventing the hook bolts from getting stuck or jammed due to external impact, further improving the ease of use and security of the lock.

[0022] In one optional embodiment, the linkage assembly includes an upper linkage, a lower linkage, and a linkage gear. The upper linkage has a first toothed portion that meshes with a drive gear assembly. The upper linkage and the lower linkage are spaced apart and arranged in parallel. The linkage gear is disposed between the upper linkage and the lower linkage. The upper linkage and the lower linkage each have a second toothed portion and a third toothed portion that mesh with the linkage gear.

[0023] Beneficial effects: By incorporating a linkage gear, the upper and lower linkages are linked to extend or retract, enabling the linkage assembly to operate smoothly under the drive of the drive gear assembly. This also improves the stability and reliability of the structure, ensuring the normal operation of the lock.

[0024] In one alternative embodiment, it further includes a third elastic element that provides an elastic driving force for ejecting the lock housing from the upper link and / or the lower link.

[0025] Beneficial effects: By incorporating a third elastic element, additional elastic driving force is provided to the upper and / or lower linkage. When the linkage assembly encounters resistance during ejection, the elastic force of the third elastic element helps overcome the resistance, ensuring the smooth ejection of the lock housing. This not only improves the reliability of the lock but also enhances its ability to cope with complex environments, guaranteeing normal operation even when encountering significant resistance or obstacles. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a self-locking structure in which the bolt can be separated from the upper and lower connecting rods for locking, according to an embodiment of the present invention; Figure 2 This is an exploded view of a self-locking structure in which the bolt can be detached from the upper and lower connecting rods and locked according to an embodiment of the present invention; Figure 3 This is an exploded view of the drive gear assembly according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a linkage assembly according to an embodiment of the present invention; Figure 5 This is an exploded view of the bolt assembly according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a hook-shaped bolt according to an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures: 1. Lock housing; 11. Bolt protrusion; 12. Waist-shaped groove; 13. First fixing part; 14. Sliding pin; 15. Anti-locking pin; 2. Drive gear assembly; 21. First gear; 22. Paddle; 23. Second gear; 231. Extension; 232. Connecting hole; 24. Push rod structure; 241. Stroke pin; 242. Stroke bushing; 3. Linkage assembly; 31. Upper link; 311. First toothed portion; 312. Second toothed portion; 32. Lower link; 321. Third toothed portion; 33. Linkage gear; 34. Guide groove; 4. Anti-lock assembly; 41. Anti-lock gear; 42. First elastic element; 43. Anti-lock gear bushing; 5. Bolt assembly; 51. Bolt plate; 511. Drive unit; 512. First fixing pin; 513. Second fixing pin; 514. Bolt plate tail pin; 52. Bolt; 521. Bolt housing; 522. Hook bolt; 5221. Round hole; 5222. Pressing protrusion; 5223. Torsion spring groove; 523. Compensating tongue; 524. Compensating tongue shaft; 525. Compensating compression spring; 53. Second elastic element; 54. Bolt washer plate; 541. Fixing part; 542. Fixing hole; 6. Third elastic element; 61. Second fixing part. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] The following is combined with Figures 1 to 6 The following describes embodiments of the present invention.

[0031] According to an embodiment of the present invention, a self-locking structure with a bolt that can be detached from the upper and lower connecting rods is provided, comprising: a drive gear assembly 2, a deadbolt assembly 4, and a bolt assembly 5. The drive gear assembly 2 is disposed within a lock housing 1, and has unlocking and deadbolt actions to drive the connecting rod assembly 3 to retract or eject from the lock housing 1. The deadbolt assembly 4 is disposed within the lock housing 1, and includes a deadbolt tooth 41 and a first elastic element 42. The deadbolt tooth 41 meshes with one of the gears in the drive gear assembly 2, and the first elastic element 42 is connected to the deadbolt tooth 41. The bolt assembly 5 is disposed within the lock housing 1, and the drive gear assembly 2 is connected to the bolt assembly 5 to drive the bolt assembly 5 to retract or eject from the lock housing 1 during unlocking and deadbolt actions. When the drive gear assembly 2 performs a deadbolt action, the first elastic element 42 provides an elastic driving force to the deadbolt tooth 41, causing the deadbolt tooth 41 to drive the drive gear assembly 2 to rotate in a deadbolt manner.

[0032] Specifically, the drive gear assembly 2, connecting rod assembly 3, deadbolt assembly 4, and bolt assembly 5 are disposed inside the lock. The drive gear assembly 2 can perform unlocking and deadbolt actions during unlocking and deadbolt operations. During unlocking and deadbolt actions, the drive gear assembly 2 rotates in a first direction and a second direction respectively, with the first and second directions having opposite rotation directions. During unlocking and deadbolt actions, the drive gear assembly 2 drives the connecting rod assembly 3 and bolt assembly 5 to retract or eject the lock housing 1. When the connecting rod assembly 3 ejects the lock housing 1, it drives the deadbolt hooks inside the door to extend; when the connecting rod assembly 3 retracts the lock housing 1, it drives the deadbolt hooks inside the door to retract. The anti-locking assembly 4 is located on one side of the drive gear assembly 2. The anti-locking tooth 41 meshes with one of the gears in the drive gear assembly 2. When the drive gear assembly 2 performs an anti-locking action, the first elastic element 42 applies an elastic driving force to the anti-locking tooth 41. The anti-locking tooth 41 applies a driving force to the drive gear assembly 2 to complete the anti-locking action, that is, provides a driving force for the drive gear assembly 2 to rotate in the second direction. When the drive gear assembly 2 encounters resistance or obstacles and cannot continue to move, it can still complete the anti-locking action under the drive of the anti-locking tooth 41 and the first elastic element 42. When the drive gear assembly 2 performs an unlocking action, the drive gear assembly 2 rotates in the first direction. At the same time, the drive gear assembly 2 drives the anti-locking tooth 41 to rotate. The anti-locking tooth 41 compresses the first elastic element 42, causing the first elastic element 42 to reset.

[0033] By incorporating the anti-locking component 4, when the drive gear assembly 2 encounters resistance or obstacles and cannot continue moving, the anti-locking tooth 41 and the first elastic element 42 can provide additional driving force to the drive gear assembly 2, ensuring that the drive gear assembly 2 completes the anti-locking action, thereby improving the reliability and security of the lock. Simultaneously, it also avoids the problem of the bolt assembly 5 failing to extend properly due to the restricted movement of the linkage assembly 3, enhancing the practicality and stability of the lock.

[0034] In one embodiment, the drive gear assembly 2 includes a first gear 21 and a second gear 23. The first gear 21 engages with the connecting rod assembly 3, and the second gear 23 engages with the anti-locking tooth 41. The first gear 21 has a paddle 22, and the second gear 23 has a push rod structure 24 that abuts against the paddle 22. The push rod structure 24 cooperates with the bolt assembly 5. When performing the anti-locking action, the first gear 21 rotates in a first direction, and the paddle 22 abuts against the push rod structure 24 to drive the second gear 23 to rotate in the first direction. At the same time, the anti-locking tooth 41 drives the second gear 23 to rotate in the first direction. When performing the unlocking action, the second gear 23 rotates in a second direction opposite to the first direction, and the push rod structure 24 abuts against the paddle 22 to drive the first gear 21 to rotate in the second direction.

[0035] Specifically, such as Figures 1 to 4As shown, the first gear disc 21 and the second gear disc 23 are coaxially arranged, with the first gear disc 21 located below the second gear disc 23. The first gear disc 21 and the second gear disc 23 each have a paddle 22 and a push rod structure 24. During the anti-locking action, the first gear disc 21 rotates in the first direction, and the paddle 22 abuts against the push rod structure 24. The paddle 22 applies a pushing force to the push rod structure 24, driving the second gear disc 23 to rotate in the first direction. The first gear disc 21 engages with the push rod structure 24. When the first gear disc 21 rotates in the first direction, it drives the push rod structure 24 to pop out from the lock housing 1. During the rotation, due to the presence of the anti-locking tooth 41 and the first elastic element 42, the anti-locking tooth 41 also drives the second gear disc 23 to rotate in the first direction, causing the push rod structure 24 to gradually separate from the paddle 22. The first gear disc 21 will not encounter resistance or obstacles, thus completing the anti-locking action and causing the push rod structure 24 to pop out from the lock housing 1. During the unlocking action, the second gear 23 rotates in the second direction, and the push rod structure 24 abuts against the paddle 22, applying a pushing force to the paddle 22 to drive the first gear 21 to rotate in the second direction. While the first gear 21 rotates, it drives the push rod structure 24 to retract into the lock case 1. When the second gear 23 rotates, it also drives the anti-locking tooth 41 to rotate, so that the anti-locking tooth 41 is reset. During the reset process of the anti-locking tooth 41, it provides a driving force to the first elastic element 42, so that the first elastic element 42 is reset.

[0036] Through the coordinated operation of the first gear 21 and the second gear 23, and the cooperation of the paddle 22 and the push rod structure 24, the drive gear assembly 2 achieves smooth operation in locking and unlocking actions. Especially in the locking action, even if the first gear 21 encounters resistance or obstacles, the second gear 23 can still complete the locking action under the drive of the locking tooth 41 and the first elastic element 42, ensuring the reliability and security of the lock.

[0037] In one embodiment, the second gear plate 23 has an extension 231, and the push rod structure 24 includes a stroke pin 241 and a stroke sleeve 242. The extension 231 has a connecting hole 232. One end of the stroke pin 241 is fixed in the connecting hole 232, and the stroke sleeve 242 is sleeved on the outer surface of the stroke pin 241. The stroke sleeve 242 abuts against the paddle 22.

[0038] Specifically, such as Figure 3 As shown, one side of the second gear disk 23 has an extension 231, which extends away from the center of the second gear disk 23 to form a protruding structure. A connecting hole 232 is provided on the extension 231. One end of the stroke pin 241 extends into the connecting hole 232 and is fixedly connected to it. The diameter of the end of the stroke pin 241 extending into the connecting hole 232 is smaller than the diameter of the stroke pin 241 itself. A stroke sleeve 242 is fitted onto the outer surface of the stroke pin 241, and the stroke sleeve 242 abuts against the lever 22.

[0039] By providing the extension 231, the stroke pin 241, and the stroke sleeve 242, the push rod structure 24 can stably abut against the paddle 22. When the first gear 21 rotates, the paddle 22 applies a thrust to the push rod structure 24, thereby driving the second gear 23 to rotate. This not only improves the transmission efficiency of the drive gear assembly 2 but also enhances the stability and reliability of the structure.

[0040] In one embodiment, the bolt assembly 5 includes a bolt plate 51 and a bolt 52. The bolt plate 51 is movably disposed within the lock housing 1. The lock housing 1 has a bolt protrusion 11. The bolt 52 is disposed on the side of the bolt plate 51 facing the bolt protrusion 11. The bolt plate 51 has a drive part 511. A push rod structure 24 cooperates with the drive part 511 to drive the bolt plate 51 to move, causing the bolt 52 to retract or eject from the lock housing 1.

[0041] Specifically, such as Figure 2 As shown, when the drive gear assembly 2 rotates in either the first or second direction, it drives the bolt plate 51 to move within the lock housing 1. When the drive gear assembly 2 rotates in the first direction, the bolt plate 51 drives the bolt 52 to move away from the drive gear assembly 2, so that the bolt 52 pops out of the bolt protrusion 11 and out of the lock housing 1. When the drive gear assembly 2 rotates in the second direction, the bolt plate 51 drives the bolt 52 to move closer to the drive gear assembly 2, so that the bolt 52 retracts from the bolt protrusion 11 back into the lock housing 1. The bolt plate 51 has a drive part 511. When the push rod structure 24 rotates with the second gear 23, it can apply a driving force to the bolt plate 51 to drive the bolt plate 51 to move.

[0042] Through the cooperation of the push rod structure 24 and the drive unit 511, the drive gear assembly 2 directly drives the bolt plate 51, enabling the bolt 52 to accurately retract or eject from the lock case 1 as the drive gear assembly 2 rotates. This not only simplifies the transmission structure and improves transmission efficiency but also enhances the accuracy and reliability of the bolt 52's movement, further improving the overall performance of the lock.

[0043] Furthermore, the bolt plate 51 is provided with a bolt plate tail pin 514, and the lock housing 1 has an oblong groove 12. The bolt plate tail pin 514 is slidably disposed in the oblong groove 12. When the bolt plate 51 moves, the bolt plate tail pin 514 can slide relative to the bolt plate 51 along the guiding direction of the oblong groove 12. The oblong groove 12 can guide the bolt plate 51.

[0044] In one embodiment, the drive unit 511 is a toggle groove, and the push rod structure 24 is slidably disposed in the toggle groove. The toggle groove has a first position and a second position. When the push rod structure 24 slides from the first position to the second position, it is an unlocking action. When the push rod structure 24 slides from the second position to the first position, it is a locking action.

[0045] Specifically, such as Figure 5 As shown, the push rod structure 24 is slidably disposed in the actuating groove. One end of the actuating groove is close to the drive gear assembly 2, and the other end is away from the drive gear assembly 2. The first position is located at the end of the actuating groove away from the drive gear assembly 2, and the second position is located at the end of the actuating groove close to the drive gear assembly 2. The end of the actuating groove away from the drive gear assembly 2 is also provided with a bent section 5112 facing the locking bolt 52. The first position is located in the bent section 5112. The bent section 5112 can limit the travel sleeve 242, so that the travel sleeve 242 is held in the first position when there is no driving force. When the push rod structure 24 is driven by the paddle 22 or the anti-locking tooth 41 and the first elastic element 42, it can move along the guide direction of the actuation groove. During the anti-locking action, the push rod structure 24 slides from the second position to the first position. While sliding relative to each other, the push rod structure 24 drives the bolt plate 51 to move, causing the bolt 52 to pop out from the bolt protrusion 11 and out of the lock case 1. During the unlocking action, the push rod structure 24 is driven to disengage from the bent section 5112 and slides relative to each other from the first position to the second position. While sliding relative to each other, the push rod structure 24 drives the bolt plate 51 to move, causing the bolt 52 to retract from the bolt protrusion 11 into the lock case 1.

[0046] By designing the drive unit 511 as a toggle groove and allowing the push rod structure 24 to slide within the toggle groove, precise motion control of the bolt plate 51 during unlocking and locking actions is achieved. This not only simplifies the transmission structure and reduces the number of parts, but also makes the movement of the bolt 52 more stable and smooth.

[0047] In one embodiment, the bolt 52 includes a bolt housing 521 and a pair of hook bolts 522. The bolt housing 521 is fixed to the bolt plate 51. The bolt housing 521 has a cavity and openings on both sides. The pair of hook bolts 522 are respectively disposed on both sides of the bolt housing 521. The hook bolts 522 are rotatably connected to the bolt housing 521 so as to retract or eject the bolt housing 521 during unlocking and locking actions.

[0048] Specifically, such as Figure 5As shown, the bolt housing 521 is fixedly disposed on the left side of the bolt plate 51. Except for the side facing the bolt protrusion 11, the other three sides of the bolt housing 521 are openings communicating with the cavity. A bolt pad 54 is provided on the bolt plate 51. The bolt plate 51, bolt pad 54, and bolt housing 521 all have bolt holes (not shown). Fasteners pass through the bolt holes of the bolt plate 51, bolt pad 54, and bolt housing 521 in sequence, fixing the bolt plate 51, bolt pad 54, and bolt housing 521 together. A pair of hook bolts 522 are rotatably disposed inside the bolt housing 521 and located on the left and right sides of the bolt housing 521. During the locking action, the hook bolts 522 can pop out from both sides of the bolt housing 521; during the unlocking action, the hook bolts 522 can retract from both sides of the bolt housing 521 into the cavity.

[0049] By incorporating a pair of rotatable hook bolts 522, the bolts 52 can pop out from both sides during the deadbolt action, enhancing the lock's anti-theft performance. Simultaneously, during the unlocking action, the hook bolts 522 can quickly retract into the bolt housing 521, preventing them from colliding with the door frame or other objects during opening, thus improving the lock's ease of use and security.

[0050] Furthermore, such as Figure 5 As shown, the bolt 52 includes a main bolt and a secondary bolt. The main bolt is located in the middle of the bolt plate 51, and the secondary bolts are located on both sides of the main bolt. The main bolt has a compensation structure, which includes a compensation tongue 523, a compensation tongue shaft 524, and a compensation spring 525. Both the main bolt housing and the main bolt pad have clearance grooves (not shown). The clearance grooves of the main bolt housing and the main bolt pad are arranged opposite each other and constructed as sliding grooves. The compensation tongue shaft 524 is located in the sliding groove. The main bolt pad has a fixing part 541 with a fixing hole 542. One end of the compensation tongue shaft 524 is fixedly connected to the fixing hole 542. The compensation tongue 523 is located in the sliding groove and slides on the other end of the compensation tongue shaft 524. The compensation spring 525 is located on the compensation tongue shaft 524. One end of the compensation spring 525 abuts against the fixing part 541, and the other end abuts against the compensation tongue 523, so that the compensation tongue 523 abuts against the main bolt housing. During the unlocking action, the compensating spring 525 provides elastic force to the compensating tongue 523, and the compensating tongue 523 provides thrust to the main bolt housing to automatically compensate and eliminate the door gap; during the unlocking action, the main bolt housing causes the compensating tongue 523 to reset and compress the compensating spring 525. Preferably, the bolt housing 521 is provided with one main bolt and two auxiliary bolts.

[0051] In one embodiment, the hook bolt 522 has a circular hole 5221, and the bolt plate 51 has a first fixing pin 512. One end of the first fixing pin 512 is fixedly connected to the bolt plate 51, and the other end of the first fixing pin 512 is fixedly connected to the bolt housing 521. The hook bolt 522 is sleeved on the first fixing pin 512 through the circular hole 5221. The hook bolt 522 has a pressing protrusion 5222, which is used to abut against the side wall of the bolt housing 1 when the bolt housing 521 extends out of the bolt housing 1 to provide a biasing force for the hook bolt 522 to pop out from the bolt housing 521. The bolt 52 also includes a second elastic element 53, which provides a biasing force for the hook bolt 522 to retract into the bolt housing 521 when the bolt housing 521 retracts into the bolt housing 1.

[0052] Specifically, such as Figure 5 and Figure 6 As shown, the bolt plate 51, bolt washer plate 54, and bolt housing 521 have three bolting holes arranged in a triangular pattern. A first fixing pin 512 passes through these bolting holes sequentially, securing the bolt plate 51, bolt washer plate 54, and bolt housing 521 together. A hook-shaped bolt 522 is fitted onto the first fixing pin 512 located on the left and right sides of the bolt housing 521 through a round hole 5221. The hook bolt 522 has a pressing beak 5222, which is located outside the cavity. During the locking action, as the bolt housing 521 pops out from the bolt extension 11, the pressing beak 5222 abuts against the side wall of the bolt housing 1. As the bolt housing 521 continues to pop out, the side wall of the bolt housing 1 applies a biasing force to the pressing beak 5222. The pressing beak 5222 causes the hook bolt 522 to rotate around the first fixing pin 512 and pop out from the cavity. 2. During the ejection process from the cavity, the second elastic element 53 is compressed; during the unlocking action, the bolt housing 521 retracts from the bolt protrusion 11 into the lock housing 1, the impact protrusion 5222 separates from the side wall of the lock housing 1, the bias pressure exerted by the side wall of the lock housing 1 on the impact protrusion 5222 disappears, and the second elastic element 53 is released. The second elastic element 53 releases elastic force on the hook bolt 522, causing the hook bolt 522 to rotate around the first fixing pin 512 under the action of the elastic force and retract into the cavity.

[0053] By setting the pressing protrusion 5222 and the second elastic element 53, the hook bolt 522 can be smoothly ejected during the locking action and automatically retracted during the unlocking action. It does not need to be passively retracted by hitting the lock body panel, thus avoiding the problem that the hook bolt 522 may get stuck or jammed and cannot be opened, and enhancing the practicality and security of the lock.

[0054] In one embodiment, the bolt plate 51 has a second fixing pin 513 disposed between a pair of hook bolts 522, and the second elastic element 53 is a torsion spring sleeved on the second fixing pin 513. The hook bolts 522 have torsion spring grooves 5223, and the lever arm of the torsion spring is disposed in the torsion spring grooves 5223.

[0055] Specifically, such as Figure 5 and Figure 6 As shown, the second fixing pin 513 is fixed on the bolt plate 51. The second fixing pin 513 is located between a pair of hook bolts 522. The torsion spring is sleeved on the second fixing pin 513, and its two ends are respectively embedded in the torsion spring grooves 5223 of the two hook bolts 522. The torsion spring can simultaneously apply elastic bias force to the two hook bolts 522, ensuring that when the locking action is performed, after the pressing protrusion 5222 separates from the side wall of the lock housing 1, the torsion spring can immediately drive the hook bolts 522 to retract into the bolt housing 521.

[0056] By employing a torsion spring as the second elastic element 53 and fitting it onto the second fixing pin 513 located between a pair of hook bolts 522, the structure is simplified, and it is ensured that the torsion spring can simultaneously and evenly apply elastic biasing force to the two hook bolts 522. Once the biasing force between the impact protrusion 5222 and the side wall of the lock housing 1 disappears, the torsion spring can respond quickly, driving the hook bolts 522 to retract smoothly and reliably into the bolt housing 521, effectively preventing the hook bolts 522 from getting stuck or jammed due to external impact, further improving the ease of use and security of the lock.

[0057] In one embodiment, the linkage assembly 3 includes an upper linkage 31, a lower linkage 32, and a linkage gear 33. The upper linkage 31 has a first toothed portion 311 that meshes with the drive gear assembly 2. The upper linkage 31 and the lower linkage 32 are spaced apart and arranged in parallel. The linkage gear 33 is disposed between the upper linkage 31 and the lower linkage 32. The upper linkage 31 and the lower linkage 32 each have a second toothed portion 312 and a third toothed portion 321 that mesh with the linkage gear 33.

[0058] Specifically, such as Figure 4 As shown, the lock housing 1 has protrusions on both sides for the upper connecting rod 31 and the lower connecting rod 32 to extend. The ends of the upper connecting rod 31 and the lower connecting rod 32 away from the protrusions are respectively provided with a second toothed portion 312 and a third toothed portion 321, which mesh with the second toothed portion 312, the third toothed portion 321, and the linkage gear 33. The upper connecting rod 31 also has a first toothed portion 311 that meshes with the first gear disc 21. When the first gear disc 21 rotates, the first toothed portion 311 drives the upper connecting rod 31 to extend or retract. When the upper connecting rod 31 extends or retracts, the second toothed portion 312 drives the linkage gear 33 to rotate, and the linkage gear 33 then drives the lower connecting rod 32 to extend or retract via the third toothed portion 321. The linkage gear 33 is rotatably mounted on the lock housing 1 via a fixing pin.

[0059] By setting the linkage gear 33, the upper linkage 31 and the lower linkage 32 are linked to pop out or retract, enabling the linkage assembly 3 to operate smoothly under the drive of the drive gear group 2. At the same time, it also improves the stability and reliability of the structure, ensuring the normal use of the lock.

[0060] In one embodiment, it further includes a third elastic element 6. The third elastic element 6 provides an elastic driving force for the upper link 31 and / or the lower link 32 to eject the locking housing 1.

[0061] Specifically, such as Figure 2 and Figure 3 As shown, the third elastic element 6 is disposed on one side of the upper connecting rod 31. When the drive gear assembly 2 performs the anti-locking action, the third elastic element 6 provides the upper connecting rod 31 with an elastic driving force to eject the lock shell 1. When the connecting rod assembly 3 encounters resistance during the ejection process driven by the drive gear assembly 2, the elastic driving force of the third elastic element 6 can assist the upper connecting rod 31 to overcome the resistance and continue to eject. At the same time, the lower connecting rod 32 is driven to eject together through the linkage gear 33, ensuring that the upper connecting rod 31 can smoothly reach the ejection position.

[0062] In other embodiments, a third elastic element 6 is provided on one side of both the upper connecting rod 31 and the lower connecting rod 32, and the third elastic element 6 can provide elastic driving force to the upper connecting rod 31 and the lower connecting rod 32 respectively; or, a third elastic element 6 is provided on one side of the lower connecting rod 32, and the third elastic element 6 provides elastic driving force to the lower connecting rod 32, and the lower connecting rod 32 drives the upper connecting rod 31 to pop out together through the linkage gear 33.

[0063] By incorporating a third elastic element 6, additional elastic driving force is provided to the upper link 31 and / or the lower link 32. This allows the link assembly 3 to overcome resistance encountered during ejection by relying on the elastic force of the third elastic element 6, ensuring that the link assembly 3 can smoothly eject the lock housing 1. This not only improves the reliability of the lock but also enhances its ability to cope with complex environments, ensuring normal operation of the lock even when encountering significant resistance or obstacles.

[0064] Furthermore, such as Figure 2 and Figure 4As shown, the third elastic element 6 is a spring with collars at both ends. The first fixing part 13 is located on the protruding side of the lock housing 1 and simultaneously on one side of the upper connecting rod 31. The first fixing part 13 is inclined on the lock housing 1, and there is an angle of less than 90° between the first fixing part 13 and the bottom of the lock housing 1, forming a snap-fit ​​position. The collar at one end of the spring is fitted onto the first fixing part 13 and snapped into the snap-fit ​​position. The second fixing part 61 is formed on the upper connecting rod 31, and the collar at the other end of the spring is fitted onto the second fixing part 61. The second fixing part 61 is arranged opposite to the first fixing part 13 so that the spring and the upper connecting rod 31 are parallel to each other. When the drive gear assembly 2 performs the unlocking action to drive the upper connecting rod 31 to pop out, the elastic restoring force of the spring can assist the upper connecting rod 31 in overcoming resistance and continuing to pop out. When the upper connecting rod 31 retracts into the lock housing 1, the spring is stretched and accumulates elastic force.

[0065] In other embodiments, the first fixing part 13 may be disposed on one side of the lower connecting rod 32, or disposed on one side of the upper connecting rod 31 and the lower connecting rod 32 respectively; the second fixing part 61 may be formed on the lower connecting rod 32, or both the upper connecting rod 31 and the lower connecting rod 32 may be provided with the second fixing part 61.

[0066] Furthermore, such as Figure 4 As shown, the upper connecting rod 31 and the lower connecting rod 32 are provided with guide grooves 34 at the ends away from the protrusion of the lock housing 1. A pair of sliding pins 14 are located on both sides of the linkage gear 33 and fixed to the lock housing 1. The sliding pins 14 are slidably connected to the guide grooves 34. When the upper connecting rod 31 and the lower connecting rod 32 retract and pop out, the sliding pins 14 can slide relative to each other along the guiding direction of the guide grooves 34.

[0067] Furthermore, such as Figure 2 As shown, the lock housing 1 is fixedly equipped with a deadbolt 15, and the deadbolt 41 has a bushing hole. The deadbolt 41 is sleeved on the deadbolt 15 through the bushing hole, and the deadbolt 41 can rotate with the deadbolt 15 as the center. One end of the deadbolt bushing 43 is fixed in the bushing hole and sleeved on the deadbolt 15. The first elastic element 42 is also a torsion spring, which is sleeved on the deadbolt bushing 43. The two lever arms of the torsion spring abut against the deadbolt 41 and the lock housing 1, respectively. When the drive gear assembly 2 performs a deadbolt action, the torsion spring applies an elastic driving force to the deadbolt 41, causing the deadbolt 41 and the drive second gear 23 to rotate in the first direction. When the drive gear assembly 2 performs an unlocking action, the second gear 23 drives the deadbolt 41 to reset, and the deadbolt 41 drives the torsion spring to reset, preparing for the next deadbolt action.

[0068] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A self-locking structure with a bolt that can be detached from upper and lower connecting rods for locking, characterized in that, include: Drive gear assembly (2), which is disposed inside lock housing (1), and has unlocking and locking actions to drive linkage assembly (3) to retract or pop out of lock housing (1). The anti-locking assembly (4) is disposed inside the lock housing (1). The anti-locking assembly (4) includes an anti-locking tooth (41) and a first elastic element (42). The anti-locking tooth (41) meshes with one of the toothed discs in the drive toothed disc assembly (2). The first elastic element (42) is connected to the anti-locking tooth (41). A bolt assembly (5) is disposed inside a lock housing (1). The drive gear assembly (2) is connected to the bolt assembly (5) to drive the bolt assembly (5) to retract or eject from the lock housing (1) during unlocking and locking actions. When the drive gear assembly (2) performs a reverse locking action, the first elastic element (42) is used to provide elastic driving force to the reverse locking tooth (41) so that the reverse locking tooth (41) drives the drive gear assembly (2) to reverse lock rotation.

2. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 1, characterized in that, The drive gear assembly (2) includes a first gear (21) and a second gear (23). The first gear (21) meshes with the connecting rod assembly (3), and the second gear (23) meshes with the anti-locking gear (41). The first gear (21) has a paddle (22), and the second gear (23) has a push rod structure (24) that abuts against the paddle (22). The push rod structure (24) cooperates with the locking bolt assembly (5). When performing the anti-locking action, the first gear... The toothed disc (21) rotates in the first direction, and the paddle (22) abuts against the push rod structure (24) to drive the second toothed disc (23) to rotate in the first direction. At the same time, the anti-locking toothed disc (41) drives the second toothed disc (23) to rotate in the first direction. When the unlocking action is performed, the second toothed disc (23) rotates in the second direction opposite to the first direction. The push rod structure (24) abuts against the paddle (22) to drive the first toothed disc (21) to rotate in the second direction.

3. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 2, characterized in that, The second gear plate (23) has an extension (231), and the push rod structure (24) includes a stroke pin (241) and a stroke sleeve (242). The extension (231) has a connecting hole (232). One end of the stroke pin (241) is fixed in the connecting hole (232), and the stroke sleeve (242) is sleeved on the outer surface of the stroke pin (241). The stroke sleeve (242) abuts against the paddle (22).

4. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 2, characterized in that, The bolt assembly (5) includes a bolt plate (51) and a bolt (52). The bolt plate (51) is movably disposed within the lock housing (1). The lock housing (1) has a bolt protrusion (11). The bolt (52) is disposed on the side of the bolt plate (51) facing the bolt protrusion (11). The bolt plate (51) has a drive part (511). The push rod structure (24) cooperates with the drive part (511) to drive the bolt plate (51) to move so that the bolt (52) retracts or pops out of the lock housing (1).

5. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 4, characterized in that, The drive unit (511) is a toggle groove, and the push rod structure (24) is slidably disposed in the toggle groove. The toggle groove has a first position and a second position. When the push rod structure (24) slides from the first position to the second position, it is an unlocking action. When the push rod structure (24) slides from the second position to the first position, it is a locking action.

6. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 4 or 5, characterized in that, The bolt (52) includes a bolt housing (521) and a pair of hook bolts (522). The bolt housing (521) is fixed to the bolt plate (51). The bolt housing (521) has a cavity and openings on both sides. The pair of hook bolts (522) are respectively disposed on both sides of the bolt housing (521). The hook bolts (522) are rotatably connected to the bolt housing (521) so as to retract or eject the bolt housing (521) during unlocking and locking actions.

7. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 6, characterized in that, The hook bolt (522) has a round hole (5221), and the bolt plate (51) has a first fixing pin (512). One end of the first fixing pin (512) is fixedly connected to the bolt plate (51), and the other end of the first fixing pin (512) is fixedly connected to the bolt housing (521). The hook bolt (522) is sleeved on the first fixing pin (512) through the round hole (5221). The hook bolt (522) has a pressing beak (5222). The aforementioned pressing beak (5222) is used to abut against the side wall of the lock housing (1) when the bolt housing (521) extends out of the lock housing (1) to provide a biasing force for the hook bolt (522) to eject from the bolt housing (521). The bolt (52) also includes a second elastic element (53) that provides a biasing force for the hook bolt (522) to retract into the bolt housing (521) when the bolt housing (521) retracts into the lock housing (1).

8. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 7, characterized in that, The bolt plate (51) has a second fixing pin (513) which is disposed between a pair of hook bolts (522). The second elastic element (53) is a torsion spring which is sleeved on the second fixing pin (513). The hook bolt (522) has a torsion spring groove (5223) and the lever arm of the torsion spring is disposed in the torsion spring groove (5223).

9. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to any one of claims 1 to 4, 7, and 8, characterized in that, The connecting rod assembly (3) includes an upper connecting rod (31), a lower connecting rod (32), and a linkage gear (33). The upper connecting rod (31) has a first tooth profile (311) that meshes with the drive gear assembly (2). The upper connecting rod (31) and the lower connecting rod (32) are spaced apart and arranged in parallel. The linkage gear (33) is disposed between the upper connecting rod (31) and the lower connecting rod (32). The upper connecting rod (31) and the lower connecting rod (32) respectively have a second tooth profile (312) and a third tooth profile (321) that mesh with the linkage gear (33).

10. The self-locking structure with a bolt that can be detached from the upper and lower connecting rods for locking according to claim 9, characterized in that, Also includes: The third elastic element (6) provides the upper link (31) and / or the lower link (32) with an elastic driving force to eject the lock shell (1).

Images