Emergency unlocking mechanism for door lock

Abstract

The utility model discloses a door lock emergency unlocking mechanism which comprises a lock body, the lock body is provided with a main spring bolt, a driving gear, a driving seat and a handle seat, the main spring bolt is in transmission connection with the driving gear, the handle seat is sleeved with a transmission gear, the transmission gear is meshed with the driving gear, the driving seat is provided with a driving motor, and the driving motor is connected with the driving seat. The driving gear is in transmission connection with the driving motor through a gear set, the gear set is arranged on a driving seat, the driving seat is in sliding fit with the lock body, a compression spring is arranged between the lock body and the driving seat, a linkage pin and a linkage hole are arranged between the grip seat and the transmission gear, an operation button is arranged on the grip seat, and the transmission gear is arranged on the grip seat. An abutting flange is arranged on the peripheral wall of the grip base. The structure is simple, combination and separation of a motor structure and a spring bolt transmission structure are conveniently achieved, and the good using effect is achieved.

Description

Technical Field

[0001] The utility model relates to an emergency unlocking mechanism for a door lock. Background Art

[0002] With the popularity of password locks and fingerprint locks, the technology of automatic unlocking by setting a motor structure in the lock body has become more and more mature, but when the motor fails, the automatic unlocking function of the motor will fail. For example, the motor may be damaged due to wear of internal parts, aging of circuits, or strong external impact due to long-term use. In this case, if there is no emergency unlocking method, the user will be locked out of the door and unable to enter his residence or office normally. Emergency unlocking can ensure that users still have a way to enter the room when the motor fails, guaranteeing basic rights of passage, and avoiding inconvenience in life or work caused by the inability to open the door lock. In an emergency, motor failure may become a huge safety hazard. Emergency unlocking can avoid delaying rescue due to motor failure; existing locks will use a clutch structure to deal with this situation, ensuring that the motor is separated from the lock body when it is not working, but in some cases, the motor will be out of control when working, or the clutch structure will fail and cannot be clutched, which leads to safety hazards in the use of the structure. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a door lock emergency unlocking mechanism, which has a simple structure, is easy to realize the combination and separation of the motor structure and the lock tongue transmission structure, and has a good use effect.

[0004] To achieve the above-mentioned purpose, the utility model provides an emergency unlocking mechanism for a door lock, including a lock body, a main lock tongue, a driving gear, a driving seat and a handle seat for manual unlocking, the main lock tongue is connected to the driving gear in transmission, the handle seat is sleeved with a transmission gear, the transmission gear is meshed with the driving gear, a driving motor is arranged on the driving seat, the driving gear is connected to the driving motor through a gear set, the gear set is arranged on the driving seat, the driving seat and the lock body are slidably matched, a compression spring for keeping the gear set and the driving gear meshed is arranged between the lock body and the driving seat, a linkage pin and a linkage hole for linking the handle seat and the transmission gear are arranged between the handle seat and the transmission gear, an operating button for driving the linkage pin and the linkage hole for plugging and matching is arranged on the handle seat, and a resistance flange for resisting the sliding of the driving seat to cause the gear set to disengage from the driving gear is arranged on the outer peripheral wall of the handle seat.

[0005] The beneficial effect of such arrangement is as follows: when the handle seat is operated, the linkage of the operating button and the linkage pin on the handle seat belongs to the prior art, and the specific structure will not be described in detail here. When the operating button is not operated, the rotation of the handle seat is idle. Although the abutment flange will push the drive seat, it will not cause the main lock tongue to retract. Furthermore, when the operating button is operated, the handle seat and the transmission gear can be driven as a whole by the handle seat through the linkage pin and the linkage hole structure. During the rotation of the handle seat, the abutment flange on the handle seat abuts against the drive seat during the rotation, causing the drive seat to slide, thereby causing the drive The gear seat on the seat disengages from the meshing of the driving gear, releasing the drive of the motor on the driving gear. At the same time, in the subsequent rotation process, as the transmission gear meshes with the driving gear, the manual unlocking action is completed. As a preferred embodiment, in the gear structure here, the driving gear is arranged as a double-layer gear, one layer cooperates with the gear set, and the other layer cooperates with the transmission gear. At the same time, the transmission gear is arranged as a half gear to ensure that when the structure is in use, it can first be pushed away from the driving seat in idle rotation, and then the door can be opened through the meshing action. This structure is simple and reliable in coordination, and is convenient for realizing the combination and separation of the motor structure and the lock tongue transmission structure, and has a good use effect.

[0006] As a further configuration of the utility model, the driving seat has a contact platform extending toward the contact flange, and the lock body is rotatably provided with a limit piece at one side of the contact platform position, and the limit piece includes a contact arm extending toward the contact flange and a lock buckle for buckling on the contact platform.

[0007] The beneficial effect of such a setting is that the contact platform extending from the drive seat to the contact flange facilitates the contact with the contact flange, so that when the handle seat rotates, the lock buckle can be disengaged from the limit, and the position of the drive seat is ensured to be stable through the lock buckle. The lock buckle is tightly buckled on the contact platform, so that it is also firmly fixed in the vertical direction. It effectively resists various external interference forces, whether it is the impact force caused by the shaking of the door or the accidental collision that may occur in daily use, it can ensure that the drive seat always maintains a precise working position. This not only improves the overall stability of the lock body, but also provides a solid guarantee for the reliable operation of the lock, further enhancing its safety and durability, thereby bringing users a better quality and stable use experience.

[0008] As a further configuration of the utility model, a drive plate is connected to the main lock tongue, a drive groove is formed on the drive plate, a drive flange is provided on the drive gear, the drive flange is fitted in the drive groove, the drive groove includes a straight portion, an arc-shaped portion and a transition portion for connecting the straight portion and the arc-shaped portion to form a closed figure, and a positioning groove is provided in the middle of the straight portion.

[0009] The beneficial effect of such arrangement is as follows: in such arrangement, through such a driving groove structure, when the driving flange moves with the operation of the driving gear, the driving flange first moves from the straight portion to the arcuate portion, and at this time there is a short idling process, and at the same time, the main lock tongue begins to be dragged to retract at the beginning of the arcuate portion. When the main lock tongue is fully retracted, the driving flange continues to slide along the arcuate portion, and the driving gear is in an idling state. In this state, the inclined tongue can be driven to retract, so that the inclined tongue and the main lock tongue are driven to retract separately, which is beneficial to ensure the structural stability of the inclined tongue, improve the stability of the structure in use, and has a good use effect.

[0010] As a further configuration of the utility model, a tilted tongue and a connecting rod are telescopically arranged in the lock body, a mounting frame is also arranged in the lock body, the connecting rod and the mounting frame are slidably matched, a resistance spring for keeping the tilted tongue outside the lock body is in contact between the tilted tongue and the mounting frame, the resistance spring is sleeved on the connecting rod, the tilted tongue is rotatably connected to the connecting rod, a transmission flange is arranged on the connecting rod, a transmission protrusion is also arranged on the transmission gear, the transmission protrusion is in contact with the transmission flange to drive the tilted tongue into the lock body.

[0011] The beneficial effect of such arrangement is that the inclined tongue and the connecting rod connected thereto cooperate with the mounting frame, and the resistance spring sleeve is arranged on the connecting rod and resists between the inclined tongue and the mounting frame, so as to cleverly keep the inclined tongue outside the lock body. This elastic support structure not only ensures the stability of the initial state of the inclined tongue, but also provides a reset power for its subsequent action. The rotation connection between the inclined tongue and the connecting rod makes its movement mode more flexible and changeable, and can better adapt to the working requirements of the lock body. The transmission flange on the connecting rod and the transmission protrusion on the transmission gear conflict with each other, and this design realizes the contraction action of the inclined tongue. When the transmission gear is in the idle position, the transmission protrusion acts on the transmission flange to accurately drive the inclined tongue into the lock body. The whole process structure is simple and clear, without complex additional parts and cumbersome transmission links, which greatly reduces the production cost and the probability of failure, and at the same time ensures the efficiency and reliability of the action. On the premise of meeting the basic functions of the lock body, the internal structure and working performance of the lock body are optimized, providing users with a more convenient and stable use experience.

[0012] As a further configuration of the utility model, a push groove is arranged on the lock body corresponding to the position of the drive seat, the push groove is arranged obliquely, the drive seat and the push groove are slidably matched, and pressure plates are respectively arranged on both sides of the push groove in the lock body, and a guide gap is formed between the pressure plate and the bottom surface of the push groove.

[0013] The beneficial effect of this arrangement is that the push groove is arranged in an inclined shape, and this unique inclined design contains a clever technical concept. When the drive seat slides in the push groove, the inclined angle can provide an ideal motion trajectory for the gear on the drive seat, making it smoother and more efficient during the operation process that needs to exit the meshing. Compared with the traditional horizontal or vertical guide structure, the inclined push groove can use this angle to cleverly resolve the jamming or interference problems that may be encountered when the gear is disengaged, thereby significantly improving the operating reliability and operational convenience of the entire lock body mechanism, while making the structural space layout more reasonable. At the same time, the lock body is arranged with pressure plates on both sides of the push groove, and the guide gap formed between the pressure plate and the bottom surface of the push groove further improves the precise guiding function of the sliding of the drive seat. The existence of this gap can not only provide just the right degree of freedom for the movement of the drive seat, enabling it to flexibly respond to external driving forces, but also effectively limit the displacement of the drive seat in the direction of escaping the push groove through the constraints imposed by the pressure plate on both sides, ensuring that it always slides stably along the push groove, greatly reducing the risk of the drive seat escaping from the push groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 It is a cross-sectional structural diagram of the position of the handle seat of the embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the matching structure of the main lock tongue and the driving gear in the embodiment of the utility model. DETAILED DESCRIPTION

[0017] The utility model provides an embodiment of a door lock emergency unlocking mechanism, such as Figures 1 to 3As shown, it includes a lock body 1, on which a main lock tongue 2, a driving gear 6, a driving seat 5 and a handle seat 4 for manual unlocking are arranged, the main lock tongue 2 is connected in transmission with the driving gear 6, the handle seat 4 is sleeved with a driving gear 7, the driving gear 7 is meshed with the driving gear 6, a driving motor is arranged on the driving seat 5, the driving gear 6 is connected in transmission with the driving motor through a gear set 51, the gear set 51 is arranged on the driving seat 5, the driving seat 5 is slidably matched with the lock body 1, and the lock A compression spring 52 is provided between the body 1 and the driving seat 5 for keeping the gear set 51 meshing with the driving gear 6, a linkage pin 42 and a linkage hole 71 are provided between the handle seat 4 and the transmission gear 7 for coupling the handle seat 4 with the transmission gear 7, an operating button (not shown in the figure) is provided on the handle seat 4 for driving the linkage pin 42 to engage with the linkage hole 71, and a resistance flange 41 is provided on the outer peripheral wall of the handle seat 4 for resisting the sliding of the driving seat 5 to disengage the gear set 51 from the driving gear 6. The beneficial effect of such arrangement is as follows: with such arrangement, when operating the handle seat 4, the linkage of the operating button and the linkage pin 42 on the handle seat 4 belongs to the prior art, and the specific structure will not be described in detail here. When the operating button is not operated, the rotation of the handle seat 4 is idle. Although the abutment flange 41 will push the drive seat 5, it will not cause the main lock tongue 2 to retract. Furthermore, when the operating button is operated, the handle seat 4 and the transmission gear 7 can be driven as a whole by the handle seat 4 through the linkage pin 42 and the linkage hole 71 structure. During the rotation of the handle seat 4, the abutment flange 41 on the handle seat 4 abuts against the drive seat 5 during the rotation, causing the drive seat 5 to slide. This causes the gear seat on the driving seat 5 to disengage the driving gear 6, thereby releasing the drive of the motor on the driving gear 6. At the same time, during the subsequent rotation, as the transmission gear 7 engages with the driving gear 6, the manual unlocking action is completed. Preferably, in the gear structure here, the driving gear 6 is configured as a double-layer gear, one layer cooperates with the gear set 51, and the other layer cooperates with the transmission gear 7. At the same time, the transmission gear 7 is configured as a half gear to ensure that when the structure is in use, it can first be pushed away from the driving seat 5 in idle rotation, and then the door can be opened through the meshing action. This structure is simple and has reliable coordination. It is easy to realize the combination and separation of the motor structure and the lock tongue transmission structure, and has a good use effect.

[0018] As a further configuration of this embodiment, the drive seat 5 extends a contact platform 53 toward the contact flange 41, and the lock body 1 is provided with a limiter 8 on one side of the contact platform 53. The limiter 8 includes a contact arm 81 extending toward the contact flange 41 and a lock 82 for buckling on the contact platform 53. The beneficial effect of such configuration is that the contact platform 53 extending from the drive seat 5 toward the contact flange 41 facilitates the contact with the contact flange 41, so that when the handle seat 4 rotates, the lock 82 can be disengaged from the limit, and the position of the drive seat 5 is ensured to be stable through the lock 82. The lock 82 is tightly buckled on the contact platform 53, so that it is also firmly fixed in the vertical direction. It effectively resists various external interference forces, whether it is the impact force caused by the shaking of the door or the accidental collision that may occur in daily use, it can ensure that the drive seat 5 is always maintained in a precise working position. This not only improves the overall stability of the lock body 1, but also provides a solid guarantee for the reliable operation of the lock, further enhancing its safety and durability, thereby bringing users a better quality and more stable use experience.

[0019] As a further configuration of this embodiment, a driving plate 21 is connected to the main lock tongue 2, a driving groove 22 is provided on the driving plate 21, a driving flange is provided on the driving gear 6, and the driving flange is fitted in the driving groove 22. The driving groove 22 includes a straight portion 221, an arc-shaped portion 223, and a transition portion 222 for connecting the straight portion 221 and the arc-shaped portion 223 to form a closed figure, and a positioning groove is provided in the middle position of the straight portion 221. The beneficial effect of such arrangement is as follows: in such arrangement, through such a driving groove 22 structure, when the driving flange moves with the driving gear 6, the driving flange first moves from the straight portion 221 to the arc portion 223, and at this time there is a short idling process, and at the same time, the main lock tongue 2 starts to be dragged to retract at the beginning of the arc portion 223. When the main lock tongue 2 is fully retracted, the driving flange continues to slide along the arc portion 223. At this time, the driving gear 6 is in an idling state. In this state, the inclined tongue 3 can be driven to retract, so that the inclined tongue 3 and the main lock tongue 2 are driven to retract separately, which is beneficial to ensure the structural stability of the inclined tongue 3, improve the stability of the structure in use, and have a good use effect.

[0020] As a further configuration of the present embodiment, a slanted tongue 3 and a connecting rod 31 are telescopically provided in the lock body 1, and a mounting frame 12 is further provided in the lock body 1. The connecting rod 31 and the mounting frame 12 are slidably matched, and a resistance spring 32 for keeping the slanted tongue 3 outside the lock body 1 is in contact with each other between the slanted tongue 3 and the mounting frame 12. The resistance spring 32 is sleeved on the connecting rod 31, and the slanted tongue 3 is rotatably connected to the connecting rod 31. A transmission flange 33 is provided on the connecting rod 31, and a transmission protrusion 72 is also provided on the transmission gear 7. The transmission protrusion 72 is in contact with the transmission flange 33 to drive the slanted tongue 3 to sink into the lock body 1. The beneficial effect of such arrangement is that the inclined tongue 3 and the connecting rod 31 connected thereto cooperate with the mounting frame 12, and the abutment spring 32 is sleeved on the connecting rod 31 and abuts between the inclined tongue 3 and the mounting frame 12, so as to cleverly keep the inclined tongue 3 outside the lock body 1. Such elastic support structure not only ensures the stability of the initial state of the inclined tongue 3, but also provides a reset power for its subsequent actions. The rotational connection between the inclined tongue 3 and the connecting rod 31 makes its movement mode more flexible and changeable, and can better adapt to the working requirements of the lock body 1. The transmission flange 33 on the connecting rod 31 and the transmission protrusion 72 on the transmission gear 7 abut each other, and this design realizes the contraction action of the inclined tongue 3. When the transmission gear 7 is in the idle position, the transmission protrusion 72 acts on the transmission flange 33 to accurately drive the inclined tongue 3 into the lock body 1. The whole process has a simple and clear structure, without the need for complicated additional components and cumbersome transmission links, which greatly reduces production costs and the probability of failure, while ensuring the efficiency and reliability of the action. On the premise of meeting the basic functions of the lock body 1, the internal structure and working performance of the lock body 1 are optimized, providing users with a more convenient and stable use experience.

[0021] As a further configuration of this embodiment, a push groove is provided on the lock body 1 corresponding to the position of the drive seat 5, the push groove is inclined, the drive seat 5 and the push groove are slidably matched, and a pressure plate 11 is provided on both sides of the push groove in the lock body 1, and a guide gap is formed between the pressure plate 11 and the bottom surface of the push groove. The beneficial effect of this configuration is that the push groove is set in an inclined shape, and this unique inclined design contains a clever technical concept. When the drive seat 5 slides in the push groove, the inclined angle can provide an ideal motion trajectory for the gear on the drive seat 5, making it smoother and more efficient when it needs to exit the meshing operation. Compared with the traditional horizontal or vertical guide structure, the inclined push groove can use this angle to cleverly resolve the jamming or interference problems that may be encountered when the gear is disengaged, thereby significantly improving the operating reliability and operational convenience of the entire lock body 1 mechanism, while making the structural space layout more reasonable. At the same time, the lock body 1 is provided with a pressure plate 11 on both sides of the push groove, and the guide gap formed between the pressure plate 11 and the bottom surface of the push groove further improves the precise guide function for the sliding of the drive seat 5. The existence of this gap can not only provide the appropriate degree of freedom for the movement of the drive seat 5, so that it can flexibly respond to the external driving force, but also effectively limit the displacement of the drive seat 5 in the direction of escaping from the push groove through the constraints imposed by the pressure plate 11 from both sides, ensuring that it always slides stably along the push groove, greatly reducing the risk of the drive seat 5 escaping from the push groove.

[0022] The above example is only one preferred specific example of the present invention. The common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A door lock emergency unlocking mechanism, comprising a lock body, on which a main lock tongue, a driving gear, a driving seat and a handle seat for manual unlocking are arranged, the main lock tongue is in driving connection with the driving gear, the handle seat is sleeved with a driving gear, the driving gear is meshed with the driving gear, and the driving seat is provided with a driving motor, characterized in that: The driving gear is connected to the driving motor through a gear set, and the gear set is arranged on the driving seat, and the driving seat is slidably matched with the lock body. A compression spring is arranged between the lock body and the driving seat to keep the gear set and the driving gear engaged, and a linkage pin and a linkage hole are arranged between the handle seat and the transmission gear to enable the handle seat and the transmission gear to be coupled and linked. An operating button for driving the linkage pin and the linkage hole to be plugged and matched is arranged on the handle seat, and a resistance flange is arranged on the outer peripheral wall of the handle seat to resist the sliding of the driving seat to cause the gear set to disengage from the driving gear.

2. The door lock emergency unlocking mechanism according to claim 1, characterized in that: The driving seat is provided with a contact platform extending toward the contact flange, and the lock body is rotatably provided with a limit piece at one side of the contact platform position, and the limit piece comprises a contact arm extending toward the contact flange and a lock buckle for buckling on the contact platform.

3. The door lock emergency unlocking mechanism according to claim 1, characterized in that: The main lock tongue is connected to a drive plate, a drive groove is formed on the drive plate, a drive flange is provided on the drive gear, the drive flange fits in the drive groove, the drive groove includes a straight portion, an arc portion and a transition portion for connecting the straight portion and the arc portion to form a closed figure, and a positioning groove is provided in the middle of the straight portion.

4. The door lock emergency unlocking mechanism according to claim 3, characterized in that: A tilted tongue and a connecting rod are telescopically arranged in the lock body, and a mounting frame is also arranged in the lock body. The connecting rod and the mounting frame are slidably matched, and a resistance spring for keeping the tilted tongue outside the lock body is in contact with each other between the tilted tongue and the mounting frame. The resistance spring is sleeved on the connecting rod, and the tilted tongue is rotatably connected to the connecting rod. A transmission flange is arranged on the connecting rod, and a transmission protrusion is also arranged on the transmission gear. The transmission protrusion is in contact with the transmission flange to drive the tilted tongue to sink into the lock body.

5. The door lock emergency unlocking mechanism according to claim 1, characterized in that: A push groove is arranged on the lock body corresponding to the position of the driving seat, the push groove is arranged obliquely, the driving seat and the push groove are slidably matched, and pressure plates are arranged on both sides of the push groove in the lock body, and a guide gap is formed between the pressure plate and the bottom surface of the push groove.

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