Electric mortise lock

Abstract

The utility model discloses an electric mortise lock which comprises a shell, a spring bolt, a gear set and a driver are arranged in the shell, and a locking spring is arranged at one end of the spring bolt. During unlocking, the lock tongue is driven by the driver through the gear set to retract into the shell; during locking, the drive drives the gear set to reset to cancel locking limitation on the spring bolt, and the locking spring pushes the spring bolt to extend out of the shell. When the locking spring pushes the lock tongue to lock, the drive controls the lock tongue to unlock and the locking spring locks, the drive can control the gear assembly to reset to achieve locking abdication of the lock tongue, the locking spring pushes the lock tongue to pop out to lock, the phenomenon of virtual locking can be prevented, continuous electrification is not needed after the lock is locked and unlocked, the energy consumption is low, and the cost is low. The energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic locks, in particular to an electric plug lock. Background Art

[0002] With the increasing improvement of people's living standards, conventional mechanical locks can no longer meet the needs of users, and electronic locks have become a necessary choice for most families. However, most of the existing electronic locks have complex structures, and a variety of complex limit switches need to be set inside for limit feedback. The unlocking and locking of the lock body are realized by precisely controlling the rotation time of the motor, which increases the control difficulty of the motor, has a high manufacturing cost, a high control failure rate, and is not conducive to improving the user experience. Summary of the Invention

[0003] In order to overcome the disadvantages and deficiencies existing in the prior art, the purpose of the utility model is to provide an electric plug lock.

[0004] The purpose of the utility model is achieved by the following technical solutions: an electric plug lock, including a housing, a lock tongue, a gear set and a drive are arranged inside the housing, and a locking spring is arranged at one end of the lock tongue;

[0005] When unlocking, the drive drives the lock tongue to retract into the housing through the gear set; the locking spring is compressed;

[0006] When locking, the drive drives the gear set to reset to cancel the locking restriction on the lock tongue, and the locking spring pushes the lock tongue to extend out of the housing. The lock tongue can extend through the limit hole on the latch plate to realize locking.

[0007] As an improvement of the electric plug lock of the utility model, a locking signal contact member is arranged on the lock tongue, and a locking signal contact seat is also arranged inside the housing. When the lock tongue extends out for locking, the locking signal contact member contacts the locking signal contact seat to connect the locking signal. When the locking signal is connected, the drive is in a standby state. When unlocking is required, an unlocking signal needs to be input through a password or fingerprint, and the PCB board receives the unlocking signal and then controls the drive to unlock.

[0008] As an improvement of the electric plug lock of the present utility model, the locking signal contact member includes a connecting member and a contact elastic sheet. One end of the connecting member is fixedly connected to the lock tongue, and the other end of the connecting member is provided with a limiting cavity. A buffer spring is arranged in the limiting cavity. The contact elastic sheet is arranged in the limiting cavity and connected to the buffer spring, and both ends of the contact elastic sheet extend outside the limiting cavity. The buffer spring has two functions. The first function is to pre-tighten the contact between the contact elastic sheet and the electrical connection sheet to prevent poor contact. The second function is to play the role of the locking buffer elastic force. When the locking spring ejects the lock tongue, it has a certain elastic buffer force, which can prevent the contact elastic sheet and the electrical connection sheet from being bruised or damaged by each other.

[0009] As an improvement of the electric plug lock of the present utility model, contact pieces are respectively arranged at both ends of the contact elastic sheet, and positioning columns are arranged on the contact pieces. The positioning columns can enable the contact elastic sheet to be accurately docked with the electrical connection sheet.

[0010] As an improvement of the electric plug lock of the present utility model, two electrical connection seats are arranged at intervals on the locking signal contact seat, electrical connection sheets are arranged on both of the two electrical connection seats, and limiting holes are arranged on the electrical connection sheets;

[0011] When the contact piece contacts the electrical connection sheet, the positioning column is matched with the limiting hole for limiting. It can prevent displacement when the contact piece and the electrical connection sheet are in contact.

[0012] As an improvement of the electric plug lock of the present utility model, a PCB board is further arranged in the shell. The locking signal contact seat is electrically connected to the PCB board, and a first Hall switch and a second Hall switch are arranged at intervals on the PCB board.

[0013] As an improvement of the electric plug lock of the present utility model, the gear set includes an intermediate transmission gear, and an induction magnetic core is arranged on the intermediate transmission gear. The induction magnetic core can mutually induce with the first Hall switch or the second Hall switch and control the drive to stop rotating. When the control circuit receives an unlocking signal, the drive rotates forward, driving the lock tongue to extend into the shell until the induction magnetic core mutually induces with the first Hall switch, the circuit is disconnected, and the drive stops rotating. At this time, it is in the unlocking state; when the control circuit receives a locking signal, the drive rotates in the reverse direction, and the gear set resets until the induction magnetic core mutually induces with the second Hall switch, the circuit is disconnected, the drive stops rotating, and the gear set resets to cancel the restriction on the extension of the lock tongue, and the locking spring pushes the lock tongue out to lock.

[0014] As an improvement of the electric plug lock of the present utility model, the gear set further includes a rack. A sliding groove is arranged on one side of the rack, and the rack meshes with the intermediate transmission gear; a slider is arranged on the bottom surface of the rack, and a sliding groove matching with the slider is arranged in the shell. The slider is embedded in the sliding groove, which can ensure the linear movement of the rack.

[0015] A toggle lever is further provided on the lock tongue, and one end of the toggle lever extends into the sliding groove. When unlocking, the movement of the rack can drive the lock tongue to move, and when the rack resets, it will not drive the lock tongue to move. The lock tongue is pushed by a spring, and the toggle lever can move in the sliding groove.

[0016] As an improvement of the electric plug lock of the present utility model, the gear set further includes a safety tooth. A first face gear is provided on the bottom surface of the safety tooth. The first face gear meshes with a second face gear. A wheel shaft is provided in the middle of the second face gear. The wheel shaft penetrates through the safety tooth. A clutch spring is sleeved on the wheel shaft. One end of the clutch spring abuts against the upper end surface of the safety tooth. The safety tooth meshes with the intermediate transmission gear;

[0017] An emergency manual unlocking connection seat is provided in the middle of the intermediate transmission gear. When unlocking by rotating the intermediate transmission gear with a triangular maintenance wrench, the first face gear and the second face gear are separated. This setting of the safety tooth can prevent the gearbox and the motor from being damaged during manual unlocking. The emergency manual unlocking connection seat is triangular and is not used when the lock is normally opened and closed.

[0018] As an improvement of the electric plug lock of the present utility model, the drive includes a micro motor and a gearbox. The micro motor drives the gearbox to output power through a worm. The gearbox is connected to the wheel shaft through an output gear. When the micro motor does not drive the worm to rotate, the worm has self-locking property, which can prevent the turbine from reversing or reversing under the action of external force, and can lock the lock tongue in the housing in the unlocked state.

[0019] The beneficial effects of the present utility model are as follows: The present utility model uses a locking spring to push the lock tongue to lock, and the drive controls the lock tongue to unlock. When the locking spring locks, the drive can control the gear assembly to reset to realize the locking and yielding of the lock tongue. The locking spring pushes the lock tongue to pop out and lock, which can prevent the phenomenon of false locking. After the present utility model is in the locked and unlocked states, it does not need to be continuously powered on, with low energy consumption, energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a perspective view of the present utility model;

[0021] Figure 2 is an exploded schematic view of the present utility model;

[0022] Figure 3 is a schematic view of the internal structure of the housing of the present utility model;

[0023] Figure 4 is a schematic view of the internal structure of the present utility model in another direction;

[0024] Figure 5It is a schematic diagram of the safety tooth structure of the present utility model;

[0025] The reference numerals are as follows:

[0026] 1. Lock tongue, 101. Toggle rod;

[0027] 2. Gear set; 21. Intermediate drive gear, 22. Induction magnetic core, 23. Rack, 24. Sliding groove, 25. Slide block, 26. Safety tooth, 27. First face gear, 28. Second face gear, 29. Axle, 20. Clutch spring, 201. Emergency manual unlocking connection seat;

[0028] 3. Drive; 31. Micro motor, 32. Gear box;

[0029] 4. Locking spring;

[0030] 5. Housing; 51. Chute, 52. Bottom shell, 53. Face shell, 54. Lock tongue protruding hole, 55. Triangular maintenance wrench hole;

[0031] 6. Bolt plate;

[0032] 7. Limit hole;

[0033] 8. Locking signal contact; 81. Connector, 82. Contact spring piece, 83. Limit cavity, 84. Buffer spring, 85. Contact piece, 86. Positioning column;

[0034] 9. Locking signal contact seat; 91. Electrical connection seat, 92. Electrical connection piece, 93. Limit hole;

[0035] 10. PCB board; 11. First Hall switch, 12. Second Hall switch. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. Additionally, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] As Figures 1 - 5 shown, an electric plug lock includes a housing 5. Inside the housing 5, there are a locking tongue 1, a gear set 2, and a driver 3. One end of the locking tongue 1 is provided with a locking spring 4;

[0040] When unlocking, the driver 3 drives the locking tongue 1 to retract into the housing 5 through the gear set 2; the locking spring 4 is compressed;

[0041] When locking, the driver 3 drives the gear set 2 to reset to cancel the locking restriction on the locking tongue 1, and the locking spring 4 pushes the locking tongue 1 to extend out of the housing 5. When the locking tongue 1 extends, it can pass through a limiting hole 7 on the latch plate 6 to achieve locking. A magnetic core can be provided on the latch plate 6. When the latch plate approaches the lock body, the magnetic core induces and conducts the control circuit inside the PCB board with the reed switch, the driver 3 drives the gear set 2 to reset to cancel the locking restriction on the locking tongue 1, and the locking spring 4 pushes the locking tongue 1 to extend and pass through the limiting hole 7 on the latch plate 6.

[0042] Preferably, a locking signal contact member 8 is provided on the locking tongue 1, and a locking signal contact seat 9 is further provided inside the housing 5. When the locking tongue 1 extends and locks, the locking signal contact member 8 contacts the locking signal contact seat 9 to connect the locking signal. When the locking signal is connected, the driver 3 is in a standby state. When unlocking is required, an unlocking signal needs to be input through a password or fingerprint. The PCB board receives the unlocking signal and then controls the driver to unlock.

[0043] Preferably, the locking signal contact member 8 includes a connecting member 81 and a contact elastic sheet 82. One end of the connecting member 81 is fixedly connected to the locking tongue 1, and the other end of the connecting member 81 is provided with a limiting cavity 83. A buffer spring 84 is provided inside the limiting cavity 83. The contact elastic sheet 82 is inserted into the limiting cavity 83 and connected to the buffer spring 84. Both ends of the contact elastic sheet 82 extend outside the limiting cavity 83. The buffer spring 84 has two functions. The first function is to be able to pre-tighten the contact between the contact elastic sheet and the electrical connection sheet to prevent poor contact; the second function is to be able to play the role of locking buffer elasticity. When the locking spring ejects the locking tongue, it has a certain elastic buffer force, which can prevent the contact elastic sheet and the electrical connection sheet from being damaged or bruised by each other.

[0044] Preferably, contact pieces 85 are provided at both ends of the contact elastic piece 82, and positioning posts 86 are provided on the contact pieces 85. The positioning posts 86 can enable the contact elastic piece 85 to be accurately docked with the electrical connection piece.

[0045] Preferably, two electrical connection seats 91 are provided at intervals on the locking signal contact base 9. Electrical connection pieces 92 are provided on both of the two electrical connection seats 91, and limiting holes 93 are provided on the electrical connection pieces 92;

[0046] When the contact piece 85 contacts the electrical connection piece 92, the positioning post 86 and the limiting hole 93 cooperate for limiting. This can prevent displacement when the contact piece 85 and the electrical connection piece 92 are in contact.

[0047] Preferably, a PCB board 10 is further provided in the housing 5. The locking signal contact base 9 is electrically connected to the PCB board 10. A first Hall switch 11 and a second Hall switch 12 are provided at intervals on the PCB board 10.

[0048] Preferably, the gear set 2 includes an intermediate transmission gear 21. An induction magnetic core 22 is provided on the intermediate transmission gear 21. The induction magnetic core 22 can interact with the first Hall switch 11 or the second Hall switch 12 and control the drive 3 to stop rotating. When the control circuit on the PCB board 10 receives an unlocking signal, the drive rotates forward, driving the lock tongue 1 to extend into the housing until the induction magnetic core 22 interacts with the first Hall switch 11, the circuit is disconnected, and the drive stops rotating. At this time, it is in the unlocking state; when the control circuit on the PCB board 10 receives a locking signal, the drive rotates in the reverse direction, and the gear set 2 resets until the induction magnetic core 22 interacts with the second Hall switch 12, the circuit is disconnected, the drive stops rotating, and the gear set 2 resets to cancel the restriction on the extension of the lock tongue 1, and the locking spring 4 pushes the lock tongue 1 to extend for locking.

[0049] Preferably, the gear set 2 further includes a rack 23. A sliding groove 24 is provided on one side of the rack 23. The rack 232 meshes with the intermediate transmission gear 21; a slider 25 is provided on the bottom surface of the rack 23, and a sliding groove 51 matching the slider is provided in the housing 5. The slider 25 is embedded in the sliding groove 51, which can ensure the linear movement of the rack 23.

[0050] A toggle rod 101 is further provided on the lock tongue 1. One end of the toggle rod 101 extends into the sliding groove 24. When unlocking, the movement of the rack 23 can drive the lock tongue 1 to move, and when the rack 23 resets, it will not drive the lock tongue 1 to move. The lock tongue 1 is pushed by the locking spring, and the toggle rod 101 can move in the sliding groove 24.

[0051] Preferably, the gear set 2 further includes a safety gear 26. A first face gear 27 is provided on the bottom surface of the safety gear 26. The first face gear 27 meshes with a second face gear 28. A wheel shaft 29 is provided in the middle of the second face gear 28. The wheel shaft 29 penetrates through the safety gear 26. A clutch spring 20 is sleeved on the wheel shaft 29. One end of the clutch spring 20 abuts against the upper end surface of the safety gear 26. The safety gear 26 meshes with the intermediate transmission gear 21.

[0052] An emergency manual unlocking connection seat 201 is provided in the middle of the intermediate transmission gear 21. When the intermediate transmission gear 21 is rotated to unlock by turning with a triangular maintenance wrench, the first face gear 27 and the second face gear 28 are separated. This setting of the safety gear 26 can prevent the gearbox and the motor from being damaged during manual unlocking.

[0053] Preferably, the drive 3 includes a micro motor 31 and a gearbox 32. The micro motor 31 drives the gearbox 32 to output power through a worm. A multi-stage gear set and a turbine are arranged in the gearbox 32. The turbine meshes with the worm. The turbine drives the multi-stage gear set to output power. The gearbox 32 is connected to the wheel shaft 29 through an output shaft. The cross section of the output shaft is D-shaped. A D-shaped hole is provided at the end of the wheel shaft 29. The output shaft is directly inserted into the D-shaped hole to connect the wheel shaft 29. When the micro motor does not drive the worm to rotate, the worm has self-locking property, which can prevent the turbine from reversing or reversing under the action of external force, and can lock the lock tongue in the housing in the unlocked state.

[0054] The housing 5 includes a bottom shell 52 and a face shell 53. The face shell 53 is fixed on the bottom shell 52 by screws. A lock tongue protruding hole 54 is provided on one side of the bottom shell 52. The lock tongue 1 can stretch in the lock tongue protruding hole 54. A triangular maintenance wrench hole 55 is provided on the face shell 53. The emergency manual unlocking connection seat 201 extends into the triangular maintenance wrench hole 55.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and structure of the present invention. The scope of the present invention is defined by the appended claims and their equivalent scope.

Claims

1. An electric bolt lock, comprising a housing, characterized in that a lock tongue, a gear set and a drive are arranged in the housing, and a locking spring is arranged at one end of the lock tongue; When unlocking, the drive drives the lock tongue to retract into the housing through the gear set; When locking, the drive drives the gear set to reset and cancel the locking restriction on the lock tongue, and the locking spring pushes the lock tongue to extend out of the housing.

2. The electric lock according to claim 1, characterized in that: The lock tongue is provided with a locking signal contact piece, and the housing is further provided with a locking signal contact seat. When the lock tongue is extended to lock, the locking signal contact piece contacts the locking signal contact seat to connect the locking signal.

3. The electric lock according to claim 2, characterized in that: The locking signal contact member includes a connecting member and a contact spring. One end of the connecting member is fixedly connected to the lock tongue. The other end of the connecting member is provided with a limiting cavity. A buffer spring is provided in the limiting cavity. The contact spring is inserted into the limiting cavity and connected to the buffer spring. Both ends of the contact spring extend out of the limiting cavity.

4. The electric lock according to claim 3, characterized in that: Contact pieces are respectively arranged at both ends of the contact spring piece, and positioning posts are arranged on the contact pieces.

5. The electric lock according to claim 4, characterized in that: Two electrical connection seats are arranged on the locking signal contact seat at intervals, and both of the two electrical connection seats are provided with electrical connection plates, and the electrical connection plates are provided with limiting holes; When the contact sheet contacts the electrical connection sheet, the positioning column cooperates with the limiting hole to limit the position.

6. The electric lock according to claim 2, characterized in that: A PCB board is also arranged in the housing, the locking signal contact seat is electrically connected to the PCB board, and a first Hall switch and a second Hall switch are arranged on the PCB board at intervals.

7. The electric lock according to claim 6, characterized in that: The gear set includes an intermediate transmission gear, and an induction core is provided on the intermediate transmission gear. The induction core can sense each other with the first Hall switch or the second Hall switch and control the drive to stop rotating.

8. The electric lock according to claim 7, characterized in that: The gear set further comprises a rack, one side of which is provided with a sliding groove, and the rack is meshed with the intermediate transmission gear; The lock tongue is also provided with a toggle rod, one end of which extends into the sliding groove.

9. The electric lock according to claim 7, characterized in that: The gear set also includes a safety tooth, a first face gear is provided on the bottom surface of the safety tooth, the first face gear is meshed with the second face gear, a wheel axle is provided in the middle of the second face gear, the wheel axle is passed through the safety tooth, a clutch spring is sleeved on the wheel axle, one end of the clutch spring abuts against the upper end surface of the safety tooth, and the safety tooth is meshed with the intermediate transmission gear; An emergency manual unlocking connection seat is provided in the middle of the intermediate transmission gear. When the intermediate transmission gear is rotated and unlocked by a triangular maintenance wrench, the first face gear is separated from the second face gear.

10. The electric lock according to claim 9, characterized in that: The drive comprises a micro motor and a gear box. The micro motor drives the gear box to output power through a worm. The gear box is connected to the wheel shaft through an output gear.

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