Single-tongue lock structure and motor home lock

Abstract

The utility model relates to the technical field of locksets for vehicles, in particular to a single-bolt lockset structure and a motor home lock, which comprises a lockset body, the lockset body is provided with a bolt and a locking spring, and the locking spring drives the bolt to be inserted into a bolt groove of a door frame to lock a door; the lock body is rotationally connected with a door opening handle, the door opening handle drives the spring bolt to be separated from the door frame bolt groove, and opening operation of a door is achieved. The lock body is further provided with a counter locking mechanism, the counter locking mechanism conducts limiting and locking operation on the spring bolt, and therefore the spring bolt is limited to move towards the interior of the lock body, and counter locking operation on the lock body is achieved. Finally, the problems that a traditional lock is complex in structure, large in occupied space, low in response speed and the like are solved by canceling the design of a dead bolt and adopting the mode that a counter lock base and a locking rod are matched with an inclined bolt, and meanwhile, the safety, convenience and intelligence of the lock are further improved by introducing an electric unlocking mechanism and an electronic module; the device is especially suitable for multiple requirements of moving occasions such as motor homes.

Description

Technical Field

[0001] This utility model relates to the technical field of locks used in vehicles, and in particular to a single-tongue lock structure and a RV lock. Background Technology

[0002] Traditional lock designs typically rely on the interaction between the bolt and the door frame tongue groove to lock and unlock the door. The bolt extends outward under the action of a locking spring, inserting into the door frame tongue groove to complete the locking operation. To unlock, turning the door handle retracts the bolt into the lock body, disengaging it from the door frame tongue groove, thus opening the door. For enhanced security, many locks also incorporate a deadbolt mechanism, which mechanically limits the movement of the bolt, ensuring that even turning the door handle cannot activate the bolt when it is deadbolted, thereby improving the lock's protective performance.

[0003] However, traditional lock deadbolt mechanisms have some significant problems. First, traditional deadbolt mechanisms typically rely on a "stick" design, which not only complicates the lock structure and occupies a large amount of space but also results in a slow response time. In practical use, this design is prone to wear or jamming over time, affecting the reliability of the lock. Furthermore, in mobile environments such as vehicles, the direct connection between the bolt and the lock cylinder can lead to impact damage to the lock cylinder due to bumps or vibrations, further affecting the lock's lifespan and security.

[0004] For example, Chinese patent document CN219241584U discloses a single-latch lock body with a deadbolt function, including a lock shell, a lock tongue slidably mounted on the lock shell via a lock rod, and a locking spring sleeved on the lock rod to drive the lock tongue out of the lock shell; a deadbolt is slidably mounted inside the lock shell, and a driving member is rotatably mounted on the upper end of the lock shell near the deadbolt to drive the deadbolt to slide upward; an unlocking member and a lock cylinder are mounted on the lower end of the lock shell near the deadbolt to drive the deadbolt to slide up and down.

[0005] Although it also features a single-latch structure, its deadbolt is located on the side of the locking bar's moving position. If installed on a vehicle, the bumpy ride can easily cause the deadbolt to collide with the locking bar, resulting in damage. Furthermore, its drive and unlocking components have a complex structure, limiting their lifespan when used in bumpy vehicles.

[0006] In summary, in order to improve the security, reliability, and ease of use of locks and meet the needs of different scenarios, such as the use in special places like RVs, it is necessary to improve and optimize the existing lock structure and unlocking methods. Utility Model Content

[0007] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0008] This utility model provides a single-tongue lock structure, including a lock body, inside which is a lock tongue and a locking spring. The lock tongue is movably connected to the lock body, and the two force-bearing ends of the locking spring abut against the lock body and the lock tongue respectively, thereby driving the lock tongue to extend outward a certain length through a lock hole on one side of the lock body, and then insert into the door frame tongue groove to realize the locking operation of the door. The lock body is also rotatably connected to a door handle, one end of which is driven to the lock tongue, driving the lock tongue to move a certain distance into the lock body and disengage from the door frame tongue groove to realize the opening operation of the door. The lock body is also provided with a deadbolt mechanism, which is movably connected to the lock body and forms a limiting locking operation on the lock tongue, thereby restricting the movement of the lock tongue into the lock body and realizing the deadbolt operation of the lock body.

[0009] Furthermore: one end of the latch is set as a beveled end, which is used to extend out of the lock body and insert into the door frame tongue groove; the other end is set as a deadbolt end, which is used to abut against the deadbolt mechanism; the deadbolt mechanism is equipped with a locking rod, which can be disengaged and abut against the deadbolt end, thereby forming a releaseable locking operation on the latch.

[0010] Furthermore: the deadbolt mechanism is equipped with a deadbolt base, one end of the locking rod is fixed to the deadbolt base, and the other end forms a free end; the deadbolt base is rotatably connected to the lock body and rotates a certain angle under the drive of the unlocking device, thereby switching the locking rod between the two states of abutting the bolt and disengaging from the bolt.

[0011] Furthermore: the side wall of the free end of the locking rod can detachably abut against the deadbolt end of the locking tongue.

[0012] Furthermore: the free end of the locking lever can detachably abut against the deadbolt end of the locking tongue.

[0013] Furthermore: one end of the door handle forms the door handle for opening the door, and the other end is provided with an unlocking lever. One end of the unlocking lever is fixed to the door handle, and the other end is connected to the lock tongue. It can drive the lock tongue to move a certain distance into the lock body, so that it disengages from the door frame tongue groove, thereby realizing the door opening operation.

[0014] Furthermore, the unlocking device is also equipped with an electric unlocking mechanism, which includes an unlocking motor and an unlocking gear set. One end of the unlocking gear set is connected to the output shaft of the unlocking motor, and the other end is connected to the deadbolt base to drive the deadbolt base to move the locking rod to abut against or disengage from the lock tongue.

[0015] Furthermore: the unlocking gear assembly is equipped with a bushing gear and a jumping gear. The bushing gear is driven and connected to the output shaft of the unlocking motor, and the jumping gear is driven and connected to the anti-locking base. The bushing gear and the jumping gear cooperate with each other to form a detachable transmission connection.

[0016] Furthermore: the end of the bushing gear facing the running gear is provided with a driving end face tooth, and the end of the running gear facing the bushing gear is provided with a driven end face tooth. The driving end face tooth and the driven end face tooth cooperate with each other to form a disengageable meshing connection.

[0017] A motorhome lock is also provided, including the single-tongue lock structure described above, and an electronic module for controlling the electric unlocking mechanism to perform unlocking or locking operations; the electronic module has a battery module, a control module and a password key that are electrically connected to each other, the battery module is electrically connected to the unlocking motor of the electric unlocking mechanism, the control module is used to set and control the motorhome lock, and the password key is used to input a password.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By eliminating the traditional "stick" design and adopting a combination of a deadbolt base and a locking bar with a beveled latch, the mechanical structure of the lock has been optimized. The locking bar abuts against the end of the beveled latch, thus blocking its retraction path and achieving deadbolt operation. To unlock, simply rotate the deadbolt base to release the locking bar from the beveled latch, allowing the latch to retract into the lock body via the door handle, completing the unlocking operation.

[0020] By limiting the deadbolt end of the bolt with a locking lever, a releaseable locking operation of the bolt is achieved, which simplifies the structure and improves the reliability and security of the lock. At the same time, the separate design of the bolt and the lock cylinder effectively avoids the risk of the lock cylinder being damaged by the bolt impact during vehicle operation.

[0021] Furthermore, this invention incorporates an electric unlocking mechanism and an electronic module. The unlocking motor drives the deadbolt base to rotate, enabling automatic unlocking and locking of the lock. The electronic module integrates a battery module, a control module, and a password keypad, allowing users to control the lock's opening and closing via password input, further enhancing its intelligence and convenience. This design is particularly suitable for mobile applications such as RVs, effectively meeting the diverse needs of modern life for safety, convenience, and durability.

[0022] In summary, this utility model optimizes the mechanical structure of traditional locks, eliminates the deadbolt design, and adopts a combination of a deadbolt base and a locking rod with a slanted tongue, thus solving the problems of complex structure, large space occupation, and slow response speed of traditional locks. At the same time, the introduction of an electric unlocking mechanism and electronic module further enhances the security, convenience, and intelligence of the lock, making it especially suitable for mobile applications such as RVs, and effectively meeting the multiple needs of modern life for safety, convenience, and durability.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the electronic module and inner knob of this utility model;

[0026] Figure 2 This is a schematic diagram of the mechanical lock cylinder and keypad of this utility model;

[0027] Figure 3 This is a structural schematic diagram of the anti-locking end and the locking rod in the state of mutual contact in this utility model;

[0028] Figure 4 This is a schematic diagram of the limiting sidewall, unlocking lever and passive push block of this utility model;

[0029] Figure 5 This is a structural diagram of the locking tongue and locking rod of this utility model in a disengaged state;

[0030] Figure 6 This is a schematic diagram of the structure of the door handle driving the lock tongue to move into the open state according to this utility model;

[0031] Figure 7 This is a schematic diagram of the structure of the arc-shaped groove and the arc-shaped part of this utility model in a separated state;

[0032] Figure 8 This is a schematic diagram of the unlocking gear assembly of this utility model;

[0033] Figure 9 This is a schematic diagram of the structure of the jumping gear and the bushing gear of this utility model in the separated state;

[0034] Figure 10 This is a structural schematic diagram of the remote control of this utility model.

[0035] The reference numerals and names in the figure are as follows:

[0036] 10 Lock body; 11 Limiting sidewall; 12 Locking spring; 13 Tactile switch; 14 Balance groove; 15 Door handle; 16 Unlocking lever; 17 Inner knob; 18 Mechanical lock cylinder; 20 Lock tongue; 21 Slanted tongue end; 22 Deadbolt end; 23 Passive push block; 24 Clearance groove; 25 Arc groove; 30 Deadbolt mechanism; 31 Locking rod; 32 Arc-shaped part; 33 Actuating protrusion; 34 Deadbolt base; 35 Driven gear; 40 Electric unlocking mechanism; 41 Unlocking motor; 50 Unlocking gear set; 51 Pressure spring; 52 Bushing gear; 53 Driving end face gear; 54 Center column; 55 Jumping gear; 56 Passive end face gear; 57 Driving gear; 58 Balance column; 60 Electronic module; 61 Battery module; 62 Charging interface; 63 Control module; 64 Shortcut button; 65 Passive keypad. Detailed Implementation

[0037] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] Please see Figures 1 to 9 In this embodiment of the present invention, a single-tongue lock structure includes a lock body 10. The lock body 10 contains a latch 20 and a locking spring 12. The latch 20 is movably connected to the lock body 10. The two force-bearing ends of the locking spring 12 abut against the lock body 10 and the latch 20, respectively, thereby driving the latch 20 to extend outward a certain length through a lock hole on one side of the lock body 10, and then insert into the door frame tongue groove to achieve the locking operation of the door. The lock body 10 can also rotate... A door handle 15 is connected to the door, one end of which is connected to the latch 20, thereby driving the latch 20 to move a certain distance into the lock body 10 and disengage from the door frame tongue groove to open the door. The lock body 10 is also provided with a deadbolt mechanism 30, which is movably connected to the lock body 10 and can limit the latch 20 to move into the lock body 10, thereby achieving the deadbolt operation of the lock body 10.

[0039] Specifically, locks typically have a bolt 20, which extends outward and inserts into the door frame tongue groove to lock the door. To open the door, the lock body 10 must first be unlocked. The door handle 15 drives the bolt 20 back into the lock body 10, removing it from the door frame tongue groove, thus releasing the lock and allowing the door to open. For enhanced security, a deadbolt mechanism 30 can be incorporated to lock the bolt 20, preventing the door handle 15 from moving it. Only by correctly engaging the deadbolt mechanism 30, releasing its restriction on the bolt 20, can the door handle 15 be used again to unlock the lock and open the door.

[0040] However, traditional locks have complex structures and do not take into account their use in vehicles, making it easy for bumpy vehicles to damage the internal structure of the lock. In particular, the side wall fitting between the deadbolt mechanism 30 and the bolt 20 makes it easy for the wobbling bolt 20 to collide with the deadbolt mechanism 30 and damage the bolt 20.

[0041] Therefore, this utility model eliminates the deadbolt and uses the deadbolt base 34 and locking rod 31 to abut the oblique tongue. Specifically, the locking rod 31 abuts against the end of the oblique tongue's locking rod, changing the traditional side-fitting structure. It uses the oblique tongue's retraction path to block it, preventing it from retracting and achieving deadbolt operation. Even if the vehicle bumps up and down, causing the deadbolt 20 to shake violently, it will not damage the locking rod 31 at its end. Moreover, an arc-shaped groove 25 can be provided at the end of the deadbolt end 22 of the deadbolt 20, and an arc-shaped part 32 can be provided at the part of the locking rod 31 that abuts against the arc-shaped groove 25. The arc-shaped part 32 and the arc-shaped groove 25 cooperate with each other, creating a certain displacement space. This ensures that even if the deadbolt 20 shakes violently, it will not damage the locking rod 31, while also ensuring the locking effect of the locking rod 31 on the deadbolt 20.

[0042] Secondly, when unlocking is required, the deadbolt base 34 must be rotated to release the locking lever 31 from its contact with the latch before the door handle 15 can be pulled to open the door. In particular, by setting the deadbolt base 34, the latch 20 can be separated from the lock cylinder, preventing the latch 20 from being damaged by bumps and impacts during vehicle operation.

[0043] like Figure 3 As shown, preferably, one end of the latch 20 is a beveled end 21, which extends out of the lock body 10 and is inserted into the door frame tongue groove; the other end is a deadbolt end 22, which abuts against the deadbolt mechanism 30; the deadbolt mechanism 30 is provided with a locking rod 31, which can be disengaged and abuts against the deadbolt end 22, thereby forming a releaseable locking operation on the latch 20.

[0044] Specifically, one end of the latch 20 is designated as a beveled end 21, which extends out of the lock body 10 and inserts into the door frame tongue groove; the other end is designated as a deadbolt end 22, which abuts against the deadbolt mechanism 30. The releaseable locking operation of the latch 20 is achieved through the detachable abutment of the deadbolt mechanism 30 (including the deadbolt base 34 and the locking rod 31). Furthermore, the locking rod 31 abuts against the end of the deadbolt end 22 of the latch 20, so even if the latch 20 wobbles up and down during vehicle operation, it will not impact the locking rod 31, thus not affecting the lifespan of the locking rod 31.

[0045] In particular, during the locking process, the interaction force between the locking rod 31 and the locking tongue 20 is transmitted along the axial direction of the locking tongue 20 and the axial direction of the locking rod 31. This prevents lateral forces from being exerted on the locking tongue 20 or the locking rod 31, reducing the risk of breakage and extending their service life.

[0046] like Figure 3 , Figure 5 and Figure 7 As shown, preferably, the deadbolt mechanism 30 is provided with a deadbolt base 34, one end of the locking rod 31 is fixed to the deadbolt base 34, and the other end forms a free end; the deadbolt base 34 is rotatably connected to the lock body 10 and rotates a certain angle under the drive of the unlocking device, or the deadbolt base 34 is slidably connected to the lock body 10 and slides a certain distance under the drive of the unlocking device, so that the locking rod 31 switches between the two states of abutting the bolt 20 and disengaging from the bolt 20.

[0047] Specifically, the deadbolt base 34 can switch the state of the locking lever 31 by rotating or sliding under the drive of the unlocking device. The rotation or sliding of the deadbolt base 34 will cause the locking lever 31 to abut against or disengage from the deadbolt end 22 of the bolt 20, thereby realizing the deadbolt and unlocking operation of the lock.

[0048] like Figure 3 and Figure 5 As shown, preferably, the side wall of the free end of the locking rod 31 is detachably abutted against the deadbolt end 22 of the latch 20. The end of the free end of the locking rod 31 is detachably abutted against the deadbolt end 22 of the latch 20.

[0049] Specifically, when the deadbolt base 34 is positioned in the axial extension direction of the bolt 20, it is preferable to use the free end of the locking rod 31 to abut against the deadbolt end 22. When the deadbolt base 34 is positioned perpendicular to the axial direction of the bolt 20, it is preferable to use the side wall of the free end of the locking rod 31 to abut against the deadbolt end 22. Using the side wall to abut against the deadbolt end 22 can reduce the length of the lock body 10, but it may also reduce the locking performance of the bolt 20. Therefore, it is only used in applications where the length of the lock body 10 is a requirement.

[0050] like Figure 1 , Figure 5 and Figure 6 As shown, preferably, the door handle 15 is rotatably connected to the lock body 10. One end of the handle forms a door handle for opening the door, and the other end is provided with an unlocking lever 16. One end of the unlocking lever 16 is fixed to the door handle 15, and the other end is connected to the latch 20. The latch 20 can be driven to move a certain distance into the lock body 10, so that it can disengage from the door frame tongue groove and realize the door opening operation.

[0051] Specifically, the latch 20 is provided with a passive push block 23 corresponding to the unlocking lever 16. The passive push block 23 is fixed to the latch 20 and is used to cooperate with the unlocking lever 16 to drive the latch 20 back into the lock body 10, thereby realizing the unlocking operation. In addition, a relief groove 24 is also provided at the position of the latch 20 corresponding to the unlocking lever 16. The relief groove 24 is used to accommodate the end of the unlocking lever 16, so that the unlocking lever 16 and the latch 20 cooperate with each other and avoid positional conflict.

[0052] Secondly, the door handle 15 is also provided with an outer handle and an inner handle. Both the outer handle and the inner handle are rotatably connected to the lock body 10 and are provided with corresponding unlocking levers 16. This allows the user to push the outer handle from outside the door or the inner handle from inside the door. Both actions can push the bolt 20 back a certain distance and disengage it from the door frame tongue groove, thereby enabling the door to be opened.

[0053] Furthermore, to prevent the bolt 20 from extending excessively outward under the force of the locking spring 12, a limiting sidewall 11 can be provided at a corresponding position on the lock body 10. The limiting sidewall 11 can limit the bolt 20, ensuring its outward extension matches a preset length. For example, the limiting sidewall 11 can cooperate with the passive push block 23 to limit the bolt 20. Since the unlocking lever 16 also requires the cooperation of the passive push block 23 to retract the bolt 20, the unlocking lever 16 can be positioned between the limiting sidewall 11 and the passive push block 23. Figure 4 As shown, the limiting sidewall 11 can limit the locking bolt 20 through the cooperation of the unlocking lever 16 and the passive push block 23, while not hindering the unlocking lever 16 from pushing the passive push block 23 to achieve the retraction operation of the locking bolt 20.

[0054] like Figure 5 and Figure 7 As shown, preferably, the unlocking device is further provided with an electric unlocking mechanism 40. The electric unlocking mechanism 40 is provided with an unlocking motor 41 and an unlocking gear set 50. One end of the unlocking gear set 50 is connected to the output shaft of the unlocking motor 41, and the other end is connected to the deadbolt base 34 to drive the deadbolt base 34 to drive the locking rod 31 to abut against the lock tongue 20 or disengage from the lock tongue 20.

[0055] Specifically, each side of the locking lever 31 is provided with an actuating protrusion 33. When the locking lever 31 is in the locked or unlocked state, a tactile switch 13 is installed at the position of the actuating protrusion 33 corresponding to the position of the lock body 10. When the deadbolt base 34 drives the locking lever 31 to lock or unlock, the actuating protrusion 33 can simultaneously abut against the corresponding tactile switch 13, so that the tactile switch 13 sends a corresponding electrical signal to the control module 63. After receiving the electrical signal, the control module 63 can control the unlocking motor 41 to stop running, further optimizing the security and reliability of the lock.

[0056] Secondly, the unlocking motor 41 drives the unlocking gear set 50 (including the bushing gear 52 and the jumping gear 55), which in turn drives the anti-locking base 34 to rotate a certain angle, thereby realizing the locking or unlocking operation of the locking rod 31 on the locking tongue 20. The jumping gear 55 and the bushing gear 52 are connected by a disengageable meshing connection. When the anti-locking base 34 rotates to the correct position, the jumping gear 55 will move away from the bushing gear 52, forming a "skipped tooth" state, cutting off the transmission torque, protecting the unlocking gear set 50 and the anti-locking base 34, and preventing dangers such as tooth breakage due to overload.

[0057] like Figure 8 As shown, preferably, the unlocking gear set 50 is provided with a bushing gear 52 and a jumping gear 55. The bushing gear 52 is driven to the output shaft of the unlocking motor 41, and the jumping gear 55 is driven to the anti-locking base 34. The bushing gear 52 and the jumping gear 55 cooperate with each other to form a detachable transmission connection.

[0058] Specifically, the shaft sleeve gear 52 and the output shaft of the unlocking motor 41 can be connected using existing technologies such as key connection, interference fit connection, and shrink sleeve connection to achieve the corresponding transmission connection. Alternatively, the output shaft can be directly set as a D-shaped shaft, and then fitted through the D-shaped hole of the shaft sleeve gear 52, which can effectively prevent the gear from slipping on the shaft and provide a reliable transmission connection.

[0059] Secondly, the jumping gear 55 has a driving tooth 57 corresponding to the position of the deadbolt base 34, and the deadbolt base 34 has a driven tooth 35 corresponding to the position of the driving tooth 57. The driving tooth 57 and the driven tooth 35 mesh with each other to form a transmission connection, thereby making the unlocking motor 41 run, driving the bushing gear 52 to rotate, and driving the jumping gear 55 to rotate. This causes the driving tooth 57 of the jumping gear 55 to drive the driven tooth 35 of the deadbolt base 34 to run synchronously, driving the deadbolt base 34 to rotate a certain angle, and causing the locking rod 31 to abut against the locking tongue 20 or disengage from the locking tongue 20.

[0060] like Figure 9As shown, preferably, the end of the bushing gear 52 facing the jumping gear 55 is provided with a driving end face tooth 53, and the end of the jumping gear 55 facing the bushing gear 52 is provided with a driven end face tooth 56. The driving end face tooth 53 and the driven end face tooth 56 cooperate with each other to form a disengageable meshing connection.

[0061] Specifically, in order to better fit between the end face teeth, a relatively long central column 54 can be provided at the end of the bushing gear 52 facing the running gear 55, so that the running gear 55 can be fitted onto the central column 54 and can rotate around the central column 54.

[0062] Secondly, under normal operating conditions, the active end face tooth 53 and the passive end face tooth 56 mesh with each other, which can transmit rotational torque normally, causing the unlocking motor 41 to drive the deadbolt base 34 to rotate, thereby realizing the locking or unlocking operation. When the deadbolt base 34 rotates to a certain angle and can no longer rotate, the trigger protrusion 33 is also in contact with the tactile switch 13, causing the tactile switch 13 to send an electrical signal to the control module 63, which controls the unlocking motor 41 to stop running. However, if the tactile switch 13 is damaged, or if the unlocking motor 41 does not stop in time, it may continue to drive the bushing gear 52 to rotate. At this time, the tooth surfaces of the active end face tooth 53 and the passive end face tooth 56 cooperate with each other and generate a certain pushing force along the axial direction of the jumping gear 55, causing the jumping gear 55 to move away from the bushing gear 52. This causes the active end face tooth 53 and the passive end face tooth 56 to disengage from each other, forming a skipped tooth state, thereby cutting off the transmission torque between the bushing gear 52 and the jumping gear 55, protecting the unlocking gear set 50 and the anti-locking base 34, and preventing the danger of broken teeth.

[0063] Furthermore, when using the inner knob 17 or the mechanical lock cylinder 18 to lock or unlock the RV lock, turning the lock cylinder can drive the deadbolt base 34 to lock or release the bolt 20, thus enabling the locking or unlocking operation. At this time, the deadbolt base 34 will also drive the jumping gear 55 to rotate synchronously. Since the bushing gear 52 remains stationary at this time, the jumping gear 55, driven by the deadbolt base 34, can also disengage the passive end face tooth 56 from the active end face tooth 53, allowing the jumping gear 55 to rotate normally.

[0064] In addition, when the jumping gear 55 moves a certain distance away from the bushing gear 52, it will exert a certain amount of pressure on the pressure spring 51, causing it to deform. After the bushing gear 52 or the anti-locking base 34 stops rotating, the pressure spring 51 resets and pushes the jumping gear 55 back towards the bushing gear 52, so that the driving end face tooth 53 and the driven end face tooth 56 abut against each other and re-mesh to form a transmission connection.

[0065] like Figure 8As shown, preferably, the unlocking gear set 50 is also provided with a pressure spring 51. One end of the pressure spring 51 abuts against the lock body 10, and the other end abuts against the jumping gear 55, so that its elastic force drives the jumping gear 55 to move towards the bushing gear 52, thereby causing the passive end face tooth 56 and the active end face tooth 53 to abut against each other and form a disengageable meshing connection.

[0066] Specifically, the spring force of the pressure spring 51 drives the jumping gear 55 to move towards the bushing gear 52, so that the active end face tooth 53 of the jumping gear 55 and the passive end face tooth 56 of the bushing gear 52 form a disengageable meshing connection, ensuring the efficient operation of the unlocking mechanism.

[0067] In addition, to make the rotation of the jumping gear 55 smoother, a balance column 58 can be provided at the end of the jumping gear 55 away from the bushing gear 52, and a balance groove 14 can be provided on the lock body 10 corresponding to the balance column 58, so that the balance column 58 of the jumping gear 55 can pass through the balance groove 14 and jump along the axial direction of the jumping gear 55, producing a certain displacement change, thereby disengaging the bushing gear 52 and the jumping gear 55 from each other and releasing the transmission connection between them.

[0068] Secondly, a countersunk hole is provided at the position of the central shaft of the balance column 58, allowing the pressure spring 51 to pass through the countersunk hole, so that one end of it can abut against the jumping gear 55 and the other end abuts against the bottom wall of the balance groove 14. In order to optimize the cooperation between the output shaft of the unlocking motor 41 and the unlocking gear set 50, a shaft hole can also be opened in the bottom wall of the balance groove 14, so that the free end of the output shaft can pass through the shaft hole to form a rotating connection and prevent the free end of the output shaft from shaking.

[0069] like Figure 1 and Figure 2 As shown, preferably, this utility model also provides a motorhome lock, including the above-mentioned lock structure, and further including an electronic module 60 for controlling the electric unlocking mechanism 40 to perform unlocking or locking operations; the electronic module 60 is provided with a battery module 61, a control module 63 and a password key 65 that are electrically connected to each other, the battery module 61 is electrically connected to the unlocking motor 41 of the electric unlocking mechanism 40, the control module 63 is used to set and control the motorhome lock, and the password key 65 is used to input a password.

[0070] Specifically, the control module 63 can perform operations such as setting, modifying, and clearing the unlocking password, and the password keypad 65 is used to input the corresponding password numbers or characters when setting the password or unlocking. The control module 63 also has a remote control chip (not shown in the figure), so that corresponding locking or unlocking operations can be performed via remote control. Furthermore, as... Figure 10 As shown, the mechanical key can be stored in the remote control for easy portability.

[0071] Secondly, the control module 63 and battery module 61 are located on the side of the RV lock facing inwards, while the keypad 65 is located on the side of the RV lock facing outwards. When the user needs to unlock the door from the outside, they can enter the corresponding password. A quick-lock button can also be set on the keypad 65, so that after the user closes the door, they can directly use the quick-lock button to lock the RV lock without entering a password.

[0072] Furthermore, the control module 63 also includes a shortcut button 64, which is electrically connected to both the control module 63 and the electric unlocking mechanism 40. The shortcut button 64 is preferably located on the side of the RV lock facing inwards, allowing the user to lock or unlock the vehicle with a single button from inside the door. The battery module 61 also includes a charging interface 62, located on the side of the RV lock facing outwards, for replenishing the battery module 61 with power.

[0073] In addition, the unlocking device is equipped with an inner knob 17, which is rotatably connected to the side of the lock body 10 facing inwards and is driven to the deadbolt base 34. The inner knob 17 is used to drive the deadbolt base 34 to engage or disengage the locking rod 31 against the bolt 20. The unlocking device also includes an inner slide, which is slidably connected to the side of the lock body 10 facing inwards and is driven to the deadbolt base 34. This slide is used to drive the deadbolt base 34 to engage or disengage the locking rod 31 against the bolt 20.

[0074] like Figure 2 and Figure 6 As shown, the unlocking device also includes a mechanical lock cylinder 18, which is installed on the side of the lock body 10 facing outwards. The lever of the mechanical lock cylinder 18 is connected to the deadbolt base 34, and is used to drive the deadbolt base 34 to move the locking lever 31 to abut against or disengage from the bolt 20. Specifically, when the battery module is faulty or the electronic module 60 malfunctions, a key can be used to unlock and lock the mechanical lock cylinder 18, further improving the applicability of the lock.

[0075] Example 1: Basic Structure and Manual Operation of a Single-Lock Lock

[0076] Basic structure of locks

[0077] The single-tongue lock structure in this embodiment includes a lock body 10, inside which a latch 20 and a locking spring 12 are provided. The latch 20 is movably connected to the lock body 10, and the two force-bearing ends of the locking spring 12 abut against the lock body 10 and the latch 20, respectively. A lock hole is provided on one side of the lock body 10. Under the action of the locking spring 12, the latch 20 extends outward through the lock hole by a certain length and can be inserted into the door frame tongue groove to realize the locking operation of the door.

[0078] The lock body 10 is also rotatably connected to a door handle 15, one end of which is connected to the latch 20. When it is necessary to open the door, the door handle 15 is rotated, and the unlocking lever 16 at the other end will drive the latch 20 to move a certain distance into the lock body 10, so that the latch 20 is disengaged from the latch groove of the door frame, thereby realizing the door opening operation.

[0079] Locking mechanism 30 and manual operation

[0080] The lock body 10 is provided with a deadbolt mechanism 30, which includes a deadbolt base 34 and a locking rod 31. One end of the locking rod 31 is fixed to the deadbolt base 34, and the other end is a free end.

[0081] When the door needs to be deadbolted, manually turn the inner knob 17 to rotate the deadbolt base 34 synchronously. This causes the free end of the locking lever 31 to abut against the deadbolt end 22 of the bolt 20, blocking the bolt 20 from its retraction path and preventing it from retracting, thus achieving the deadbolt operation. At this time, even if the door handle 15 is turned, the bolt 20 cannot move into the lock body 10 because it is limited by the locking lever 31, and the door cannot be opened.

[0082] When unlocking is required, manually rotate the inner knob 17 again to disengage the locking lever 31 from the deadbolt end 22 of the bolt 20, releasing the restriction on the bolt 20. At this time, you can pull the door handle 15 to open the door.

[0083] Example 2: Electric unlocking example of a single-tongue lock

[0084] The electric unlocking mechanism consists of 40 components.

[0085] The lock in this embodiment adds an electric unlocking mechanism 40 to the lock in embodiment one. The electric unlocking mechanism 40 includes an unlocking motor 41 and an unlocking gear set 50. The unlocking gear set 50 includes a bushing gear 52, a jumping gear 55, and a pressure spring 51. The bushing gear 52 is driven to the output shaft of the unlocking motor 41, and the jumping gear 55 is driven to the anti-lock base 34. The bushing gear 52 and the jumping gear 55 are connected by a driving end face tooth 53 and a driven end face tooth 56, forming a detachable transmission connection. One end of the pressure spring 51 abuts against the lock body 10, and the other end abuts against the jumping gear 55, causing its elastic force to drive the jumping gear 55 to move towards the bushing gear 52, so that the driven end face tooth 56 and the driving end face tooth 53 abut against each other, forming a detachable meshing connection.

[0086] Electric unlocking process

[0087] When an electric unlocking or locking operation is required, the electronic module 60 comes into play. The electronic module 60 includes a battery module 61, a control module 63, and a password keypad 65, which are electrically connected to each other. When the user enters the correct password through the password keypad 65, the control module 63 receives the signal and controls the battery module 61 to supply power to the unlocking motor 41 of the electric unlocking mechanism 40, and the unlocking motor 41 starts to run.

[0088] The unlocking motor 41 drives the bushing gear 52 to rotate. The driving end face tooth 53 of the bushing gear 52 meshes with the driven end face tooth 56 of the jumping gear 55, causing the jumping gear 55 to rotate. The jumping gear 55 has a driving tooth 57 corresponding to the position of the anti-locking base 34, and the anti-locking base 34 has a driven tooth 35 corresponding to the driving tooth 57. The driving tooth 57 and the driven tooth 35 mesh with each other, thereby causing the jumping gear 55 to drive the anti-locking base 34 to rotate by a certain angle.

[0089] In the unlocking operation, the rotation of the deadbolt base 34 will cause the locking rod 31 to disengage from the deadbolt end 22 of the bolt 20, at which point the door handle 15 can be turned to open the door; in the locking operation, the rotation of the deadbolt base 34 will cause the locking rod 31 to abut against the deadbolt end 22 of the bolt 20, thereby locking.

[0090] Protection mechanism

[0091] A tactile switch 13 is installed at a corresponding position on the lock body 10 to detect the state of the locking lever 31. When the locking lever 31 is rotated to its position, the actuating protrusion 33 abuts against the tactile switch 13, and the tactile switch 13 sends an electrical signal to the control module 63. The control module 63 then controls the unlocking motor 41 to stop running to prevent excessive rotation.

[0092] If the tactile switch 13 is damaged, or if the unlocking motor 41 does not stop in time and continues to drive the bushing gear 52 to rotate, the tooth surfaces of the driving end face tooth 53 and the driven end face tooth 56 engage with each other, generating a certain pushing force along the axial direction of the jumping gear 55. This causes the jumping gear 55 to shift away from the bushing gear 52, disengaging the driving end face tooth 53 and the driven end face tooth 56, thus creating a skipped tooth state. This cuts off the transmission torque between the bushing gear 52 and the jumping gear 55, protecting the unlocking gear set 50 and the anti-locking base 34, and preventing the risk of broken teeth. After the bushing gear 52 or the anti-locking base 34 stops rotating, the pressure spring 51 resets, pushing the jumping gear 55 back towards the bushing gear 52, causing the driving end face tooth 53 and the driven end face tooth 56 to abut against each other and re-engage to form a transmission connection.

[0093] The user enters a password via keypad 65. After verification, control module 63 drives unlocking motor 41 to operate, which in turn drives unlocking gear set 50 to transmit power to deadbolt base 34, causing locking lever 31 to switch states and complete the unlocking or locking operation. When deadbolt base 34 rotates to its final position, tactile switch 13 sends an electrical signal to control module 63, which then stops unlocking motor 41. If tactile switch 13 is damaged or unlocking motor 41 fails to stop in time, the skipped gear protection mechanism is activated, cutting off the transmission torque and protecting the lock structure.

[0094] Example 3: Multiple unlocking methods for RV locks

[0095] RV lock overall structure

[0096] This embodiment is a RV lock that adopts the aforementioned single-tongue lock structure and adds an electronic module 60 to control the electric unlocking mechanism 40 for unlocking or locking operations. The electronic module 60 includes a battery module 61, a control module 63, and a keypad 65, all electrically connected to each other. The battery module 61 powers the entire electronic control module 63 and is electrically connected to the unlocking motor 41, providing power to the electric unlocking mechanism 40. The control module 63 is used to set and control the lock, receiving electrical signals from the keypad 65, control buttons, or tactile switches 13, and controlling the operating state of the unlocking motor 41 according to preset logic.

[0097] The password key 65 is used to input a password. After the user enters the correct password, the control module 63 verifies the password and sends a command to drive the unlock motor 41 to operate, thus completing the unlocking or locking operation.

[0098] Multiple unlocking methods

[0099] Electric combination lock: When the user is outside the RV, he enters the correct combination lock through the combination key 65. After the control module 63 receives the signal, it controls the unlocking motor 41 to run. According to the electric unlocking process in Embodiment 2, the deadbolt base 34 drives the locking rod 31 to disengage from the lock tongue 20, thereby realizing the unlocking operation.

[0100] Unlocking via inner knob 17: The unlocking device is equipped with an inner knob 17, which is rotatably connected to the side of the lock body 10 facing the inside of the door and is also connected to the deadbolt base 34. Inside the RV, the user can turn the inner knob 17 to drive the deadbolt base 34 to move the locking rod 31 to abut against or disengage from the bolt 20, thereby unlocking or locking the vehicle.

[0101] Unlocking via mechanical lock cylinder 18: The unlocking device also includes a mechanical lock cylinder 18, which is installed on the side of the lock body 10 facing outwards. The lever of the mechanical lock cylinder 18 is connected to the deadbolt base 34. Outside the vehicle, the user inserts the corresponding mechanical key into the mechanical lock cylinder 18 and turns it. The lever of the mechanical lock cylinder 18 drives the deadbolt base 34 to rotate, causing the locking lever 31 to abut against or disengage from the bolt 20, thus completing the unlocking or locking operation.

[0102] This lock structure achieves a high-security, high-reliability, and convenient lock solution through optimized mechanical design, the introduction of electronic control module 63, and a skip-tooth protection mechanism, making it particularly suitable for mobile applications such as RVs.

[0103] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A single tongue latch structure comprising a latch body (10) characterised in that, The lock body (10) is internally provided with a lock tongue (20) and a locking spring (12). The lock tongue (20) is movably connected to the lock body (10), and the two force ends of the locking spring (12) abut against the lock body (10) and the lock tongue (20) respectively, so as to drive the lock tongue (20) to extend out of the lock body (10) by a certain length through the lock hole formed on one side of the lock body (10), and then to be inserted into the door frame tongue groove, thereby realizing the locking operation of the door. The lock body (10) is further rotatably connected with a door opening handle (15). One end of the door opening handle (15) is drivingly connected to the lock tongue (20), so as to drive the lock tongue (20) to move a certain distance into the lock body (10) and to be separated from the door frame tongue groove, thereby realizing the opening operation of the door. The lock body (10) is further provided with a reverse locking mechanism (30). The reverse locking mechanism (30) is movably connected to the lock body (10) and forms a limiting locking operation on the lock tongue (20), so as to limit the movement of the lock tongue (20) into the lock body (10) and realize the reverse locking operation of the lock body (10).

2. A single tongue and groove structure as claimed in claim 1, wherein, One end of the lock tongue (20) is provided with a beveled tongue end (21) for extending out of the lock body (10) and being inserted into the door frame tongue groove. The other end of the lock tongue (20) is provided with a reverse locking end (22) for abutting against the reverse locking mechanism (30). The reverse locking mechanism (30) is provided with a locking rod (31) which can abut against the reverse locking end (22) in a detachable manner, so as to form a releasable locking operation on the lock tongue (20).

3. A single tongue and groove lock structure according to claim 2, wherein The reverse locking mechanism (30) is provided with a reverse locking base (34). One end of the locking rod (31) is fixedly connected to the reverse locking base (34), and the other end of the locking rod (31) forms a free end. The reverse locking base (34) is rotatably connected to the lock body (10) and is driven by the unlocking device to rotate by a certain angle, so as to switch the locking rod (31) between the two states of abutting against the lock tongue (20) and being separated from the lock tongue (20).

4. The single tongue lock structure according to claim 3, wherein The side wall of the free end of the locking rod (31) can abut against the reverse locking end (22) of the lock tongue (20) in a detachable manner.

5. The single tongue lock structure according to claim 3, wherein The end of the free end of the locking rod (31) can abut against the reverse locking end (22) of the lock tongue (20) in a detachable manner.

6. The single tongue lock structure according to claim 1, wherein One end of the door opening handle (15) forms a door handle for opening the door, and the other end of the door opening handle (15) is provided with an unlocking lever (16). One end of the unlocking lever (16) is fixedly connected to the door opening handle (15), and the other end of the unlocking lever (16) is drivingly connected to the lock tongue (20) and can drive the lock tongue (20) to move a certain distance into the lock body (10) and to be separated from the door frame tongue groove, thereby realizing the opening operation of the door.

7. The single tongue lock structure according to claim 3, wherein The unlocking device is further provided with an electric unlocking mechanism (40). The electric unlocking mechanism (40) is provided with an unlocking motor (41) and an unlocking gear set (50). One end of the unlocking gear set (50) is drivingly connected to the output shaft of the unlocking motor (41), and the other end of the unlocking gear set (50) is drivingly connected to the reverse locking base (34), so as to drive the reverse locking base (34) to drive the locking rod (31) to abut against the lock tongue (20) or to be separated from the lock tongue (20).

8. A single tongue and groove structure according to claim 7, wherein The unlocking gear set (50) is provided with a shaft sleeve gear (52) and a jumping gear (55), the shaft sleeve gear (52) is drivingly connected to the output shaft of the unlocking motor (41), the jumping gear (55) is drivingly connected to the anti-lock base (34), and the shaft sleeve gear (52) and the jumping gear (55) are matched with each other to form a detachable driving connection.

9. A single tongue and groove lock structure according to claim 8, wherein The one end of the shaft sleeve gear (52) facing the jumping gear (55) is provided with a driving end face tooth (53), the one end of the jumping gear (55) facing the shaft sleeve gear (52) is provided with a driven end face tooth (56), and the driving end face tooth (53) and the driven end face tooth (56) are matched with each other to form a detachable meshing connection.

10. A recreational vehicle lock characterized by, The single-tongue lock structure comprises the single-tongue lock structure according to any one of claims 1-9, and further comprises an electronic module (60) for controlling the electric unlocking mechanism (40) to perform unlocking or locking operation; the electronic module (60) is provided with a battery module (61), a control module (63) and a password key (65) which are electrically connected with each other, the battery module (61) is electrically connected to the unlocking motor (41) of the electric unlocking mechanism (40), the control module (63) is used for setting and controlling the motor home lock, and the password key (65) is used for inputting a password.

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