An electric mortise lock

Abstract

An electric mortise lock, a lock body, a lock bolt is arranged in the lock body; a lock machine plate is arranged with a lock hole matched with the lock bolt; the lock body comprises a lock shell, a rotary motor is arranged in the lock shell for driving the lock bolt to move, the output shaft of the rotary motor is connected with a rotating shaft, a sliding block is arranged on the rotating shaft, a matching inclined surface is formed between the sliding block and the rotating shaft, the sliding block moves along the axial direction of the rotating shaft when the rotating shaft rotates; the sliding block is movably connected with a pull rod, one end of the pull rod is movably connected with the sliding block, and the other end is hingedly connected with a lock bolt driving rod; one end of the lock bolt driving rod is hingedly connected with the pull rod, and the other end is movably connected with the lock bolt; a multi-link mechanism is formed by the sliding block, the pull rod, the lock bolt driving rod and the lock bolt, the rotary motion is converted into linear motion by the sliding block, and the lock bolt is controlled, so that the extension or retraction of the lock bolt is prevented from being blocked, and the use stability of the electric mortise lock is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to an electric bolt lock. Background Technology

[0002] An electric bolt lock is also a type of electronically controlled lock. It uses the switching of electric current to drive the extension or retraction of the bolt, thus locking or unlocking the door. The key component of the lock body is the bolt, which, in conjunction with the keyhole, allows for two states: "closed" and "open." That is, the bolt inserting into the keyhole closes the door, and the bolt retracting from the keyhole opens the door.

[0003] In existing technologies, after long-term use, electric bolt locks may experience obstruction in the extension or retraction of the bolt due to wear of internal components, resulting in reduced stability. Improving the stability of electric bolt locks is a technical problem that the industry urgently needs to solve. Utility Model Content

[0004] The purpose of this utility model is to provide an electric bolt lock that uses a slider, a pull rod, a bolt drive rod, and a bolt together to form a multi-link mechanism. The slider converts rotational motion into linear motion and controls the bolt, thereby preventing the bolt from being obstructed when extending or retracting, and effectively improving the stability of the electric bolt lock.

[0005] This utility model provides an electric bolt lock, comprising:

[0006] The lock body contains a bolt.

[0007] Locking plate, the locking plate is provided with lock holes that cooperate with the lock tongue;

[0008] The lock body includes a lock shell, inside which is a rotary motor for driving the bolt movement. The output shaft of the rotary motor is connected to a rotating shaft, and a slider is provided on the rotating shaft. A mating inclined surface is formed between the slider and the rotating shaft. When the rotating shaft rotates, the slider moves along the axial direction of the rotating shaft. A pull rod is movably connected to the slider. One end of the pull rod is movably connected to the slider, and the other end is hinged to the bolt drive rod. One end of the bolt drive rod is hinged to the pull rod, and the other end is movably connected to the bolt.

[0009] When the rotary motor drives the rotating shaft to rotate, the slider moves along the axial direction of the rotating shaft, which drives the pull rod. The pull rod drives the lock tongue drive rod to move. Under the drive of the lock tongue drive rod, the lock tongue extends from the lock housing into the lock hole or retracts from the lock hole into the lock housing.

[0010] Furthermore, the slider is sleeved on the rotating shaft, and a connecting sleeve is sleeved on the output shaft of the motor. The rotating shaft is connected to the output shaft of the motor through the connecting sleeve. The connecting sleeve has a protrusion, and a slider spring is sleeved on the connecting sleeve between the slider and the protrusion. The slider spring is a compression spring.

[0011] Furthermore, the latch drive rod is a curved rod with a drive rod pin at its bend. When the pull rod moves, the latch drive rod rotates around the drive rod pin under the pull rod's influence. A drive rod torsion spring is fitted on the drive rod pin, and the drive rod torsion spring applies a force to the latch drive rod to push the latch out of the lock housing.

[0012] Furthermore, the slider is provided with a guide groove that is closed at one end. The end of the pull rod that connects to the slider is located in the guide groove, and the closed end of the guide groove is the end close to the locking tongue drive rod.

[0013] Furthermore, a notch is provided at the bottom of the latch to mate with the latch drive rod. One end of the latch drive rod that mates with the latch extends into the notch, and the pull rod drives the latch drive rod to rotate around the drive rod pin, thereby driving the latch to move.

[0014] Furthermore, a roller is provided at one end of the latch drive rod that extends into the notch. When the pull rod drives the latch drive rod to rotate around the drive rod pin, the roller contacts the inner surface of the notch.

[0015] Furthermore, a latch guide sleeve is provided between the lock case and the latch.

[0016] Furthermore, a PCBA control board is installed inside the lock housing, and the PCBA control board is connected to the control system via a control power line.

[0017] Furthermore, a waterproof box is also provided inside the lock housing. The waterproof box includes a box body and a box cover. The rotary motor, rotating shaft and slider are all located inside the waterproof box. The box cover is fastened to the box body, and the box cover is provided with an opening for the pull rod to extend into the box body.

[0018] Furthermore, the lock case includes a housing and a panel. The rotary motor, shaft, slider, pull rod, and lock tongue are all housed within the housing. The panel has a lock tongue hole for protrusion and an indicator light.

[0019] The technical effect of this solution is as follows: This application uses a slider, pull rod, and bolt drive rod to form a multi-link mechanism, converting the rotational motion of the rotary motor into the linear motion of the bolt along the lock hole direction. The multi-link structure itself has a certain degree of transmission stability and can constrain the movement path of the bolt, thereby preventing obstruction of bolt extension or retraction, effectively improving the stability of the electric bolt lock. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. The drawings described below are only for some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 An exploded view of the electric bolt lock in an embodiment of this application is shown;

[0022] Figure 2 This paper shows a cross-sectional view of the unlocked state of the electric bolt lock in an embodiment of this application.

[0023] Figure 3 A cross-sectional view of the locked state of the electric bolt lock in an embodiment of this application is shown.

[0024] Reference numerals: 1-Housing, 2-Lock tongue, 201-Notch, 3-Lock tongue silicone pad, 4-Lock tongue guide sleeve, 5-Roller, 6-Roller pin, 7-Drive rod torsion spring, 8-Shaft, 9-Box body, 10-Slider, 101-Guide groove, 11-Slider spring, 12-Connecting bushing, 13-Rotary motor, 14-Lock tongue drive rod, 15-Drive rod pin, 16-Pull rod pin, 17-Pull rod, 18-Box cover, 19-PCBA control board, 20-Control power cord, 21-Card slot, 22-Indicator light, 23-Panel, 231-Lock tongue hole, 24-Lock plate, 241-Lock hole. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of this utility model.

[0030] In the following description, suffixes such as "module," "part," "component," or "unit" are used only for the purpose of describing this utility model and have no specific meaning in themselves. Therefore, they can be used in combination.

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] According to one embodiment of the present invention, such as Figures 1 to 3 An electric bolt lock, comprising:

[0033] Lock body 1, with a lock tongue 2 inside the lock body 1;

[0034] Locking plate 24, the locking plate 24 is provided with a lock hole 241 that cooperates with the lock tongue 2;

[0035] The lock body 1 includes a lock shell, which is composed of a housing 1 and a panel 23. A rotary motor 13 for driving the bolt 2 is installed inside the housing 1. The output shaft of the rotary motor 13 is connected to a rotating shaft 8. A slider 10 is provided on the rotating shaft 8. A mating inclined surface is formed between the slider 10 and the rotating shaft 8. When the rotating shaft 8 rotates, the slider 10 moves along the axial direction of the rotating shaft 8. A pull rod 17 is movably connected to the slider 10. One end of the pull rod 17 is movably connected to the slider 10, and the other end is hinged to the bolt drive rod 14. One end of the bolt drive rod 14 is hinged to the pull rod 17, and the other end is movably connected to the bolt 2. In this embodiment, the pull rod 17 and the bolt drive rod 14 are hinged by a pull rod pin 16.

[0036] When the rotary motor 13 drives the rotating shaft 8 to rotate, the slider 10 moves along the axial direction of the rotating shaft 8, driving the pull rod 17. The pull rod 17 drives the lock tongue drive rod 14 to move. Under the drive of the lock tongue drive rod 14, the lock tongue 2 extends from the lock housing into the lock hole 241 or retracts from the lock hole 241 into the lock housing.

[0037] In this embodiment, a mating inclined surface is formed between the slider 10 and the rotating shaft 8. When the rotating shaft 8 rotates under the drive of the rotary motor 13, the slider 10 can move along the axial direction of the rotating shaft 8, thereby driving the pull rod 17 to move towards or away from the latch drive rod 14. In this embodiment, the slider 10, pull rod 17, and latch drive rod 14 form a multi-link mechanism, which converts the rotational motion of the rotary motor 13 into the linear motion of the latch 2 along the direction of the lock hole 241. The multi-link structure itself has a certain transmission stability and can constrain the movement path of the latch 2 itself, thereby preventing the latch 2 from being obstructed in its extension or retraction, effectively improving the stability of the electric bolt lock.

[0038] It should be noted that in this embodiment, the slider 10 and the pull rod 17 can be connected by hinge or by a groove closed at one end. When the slider 10 and the pull rod 17 are hinged, the slider 10 can provide the pull rod 17 with a movement that moves towards the latch drive rod 14 or away from the latch drive rod 14. When the slider 10 and the pull rod 17 are connected by a groove closed at one end, the slider 10 can only provide the pull rod 17 with a movement away from the latch drive rod 14. In this state, the pull rod 17 mainly participates in the movement of the latch 2 retracting from the lock hole 241 into the lock housing. That is, the pull rod 17 pulls the latch drive rod 14 to retract the latch 2 from the lock hole 241 into the lock housing. The movement of the latch 2 extending from the lock housing into the lock hole 241 can be provided by other components, such as a spring.

[0039] According to one embodiment of this utility model, a slider 10 is sleeved on a rotating shaft 8, and a connecting sleeve 12 is sleeved on the output shaft of a motor. The rotating shaft 8 is connected to the output shaft of the motor through the connecting sleeve 12. A protrusion is provided on the connecting sleeve 12, and a slider spring 11 is sleeved on the connecting sleeve 12 between the slider 10 and the protrusion. The slider spring 11 is a compression spring. The latch drive rod 14 is a curved rod, and a drive rod pin 15 is provided at its bend. When the pull rod 17 moves, the latch drive rod 14 rotates around the drive rod pin 15 under the drive of the pull rod 17. A drive rod torsion spring 7 is sleeved on the drive rod pin 15. The drive rod torsion spring 7 applies a force to the latch drive rod 14 to push the latch 2 from inside the lock housing to outside the lock housing. A guide groove 101 with one end closed is provided on the slider 10. One end of the pull rod 17 that connects to the slider 10 is located in the guide groove 101, and the closed end of the guide groove 101 is the end close to the latch drive rod 14.

[0040] In this embodiment, the latch drive rod 14 is a curved rod, and a drive rod pin 15 is provided at its curved part. A drive rod torsion spring 7 is sleeved on the drive rod pin 15. In the natural state, the drive rod torsion spring 7 forces the latch drive rod 14 to hold the latch 2, so that the latch 2 is maintained in the state of extending from the lock housing into the lock hole 241. At this time, the pull rod 17 is at one end of the guide groove 101 closed under the action of the drive rod torsion spring 7. Meanwhile, a slider spring 11 is fitted on the connecting bushing 12 between the slider 10 and the protrusion. In its natural state, the slider spring 11 forces the slider 10 to be located away from the motor. When it is necessary to switch the state of the latch 2 to retract from the lock hole 241 into the lock housing, the rotary motor 13 is driven to rotate the rotating shaft 8. A mating inclined surface is formed between the slider 10 and the rotating shaft 8. The mating inclined surface is forced to move the slider 10 towards the motor. At this time, the slider spring 11 is compressed, and the pull rod 17 receives the force from the inner wall of the closed section of the guide groove 101 and moves away from the latch drive rod 14. This causes the latch drive rod 14 to rotate against the elastic force of the drive rod torsion spring 7, driving the latch 2 to retract from the lock hole 241 into the lock housing.

[0041] According to one embodiment of this utility model, the bottom of the latch 2 has a notch 201 for engaging with the latch drive rod 14. One end of the latch drive rod 14 engaging with the latch 2 extends into the notch 201. The pull rod 17 drives the latch drive rod 14 to rotate around the drive rod pin 15, thereby driving the latch 2 to move. A roller 5 is provided at one end of the latch drive rod 14 that extends into the notch 201. When the pull rod 17 drives the latch drive rod 14 to rotate around the drive rod pin 15, the roller 5 contacts the inner surface of the notch 201. In this embodiment, the roller 5 is mounted on the latch drive rod 14 via a roller pin 6.

[0042] like Figures 1 to 3As shown, the notch 201 is a C-shaped notch. When the latch drive rod 14 rotates against the elastic force of the drive rod torsion spring 7, the roller 5 applies downward pressure to the bottom wall of the notch 201, forcing the latch 2 to move away from the keyhole 241. When the drive rod torsion spring 7 releases its elastic force, the roller 5 applies upward thrust to the top wall of the notch 201, forcing the latch 2 to move closer to the keyhole 241.

[0043] According to one embodiment of the present invention, such as Figures 1 to 3 As shown, a latch guide sleeve 4 is provided between the lock housing and the latch 2. A latch silicone pad 3 is also provided under the latch guide sleeve 4. By providing the latch guide sleeve 4, rigid friction between the latch 2 and the lock housing is avoided, and wear of the latch 2 is prevented after long-term reuse. On the other hand, it provides a guiding function for the reciprocating movement of the latch 2, which helps to ensure the smoothness of the movement of the latch 2, thereby improving the overall stability of the equipment.

[0044] According to one embodiment of this utility model, a PCBA control board 19 and a locking member 21 are provided inside the lock housing. The PCBA control board 19 is connected to the control system via a control power line 20. The locking member 21 is disposed inside the lock housing to hold the control power line 20 and fix its position. A rotary motor 13 is electrically connected to the PCBA control board 19. When the control system sends an unlocking signal, the unlocking signal is sent to the PCBA control board 19 via the control power line 20. The control board sends a command to the rotary motor 13 to control the motor to rotate, which in turn drives the slider 10, the pull rod 17, and the bolt drive rod 14 to move, causing the bolt 2 to retract into the lock housing, thus completing the unlocking action.

[0045] In this embodiment, the latch 2 uses self-locking to complete the locking. When the control system detects that the latch 2 is below the lock hole 241 of the lock mechanism plate 24, the door magnetic switch in the lock mechanism plate 24 will be sensed. When the sensing time exceeds 3 seconds, the PCBA control board 19 will control the rotary motor 13 to cut off the power. After the power is cut off, the drive rod torsion spring 7 releases the elastic force, and the roller 5 applies an upward pushing force to the latch 2, forcing the latch 2 to move towards the lock hole 241 to complete the locking. When the door magnetic switch is sensed for less than 3 seconds, the drive motor remains powered on, keeping the slider 10 in a fixed position.

[0046] According to one embodiment of this utility model, a waterproof box is also provided inside the lock housing. The waterproof box includes a box body 9 and a box cover 18. The rotary motor 13, the rotating shaft 8, and the slider 10 are all disposed inside the box body 9 of the waterproof box. The box cover 18 is fastened to the box body 9, and the box cover 18 is provided with an opening for the pull rod 17 to extend into the box body 9. The lock housing includes a shell 1 and a panel 23. The rotary motor 13, the rotating shaft 8, the slider 10, the pull rod 17, and the bolt 2 are all disposed inside the shell 1. The panel 23 is provided with a bolt hole 231 for protrusion, and the panel 23 is also provided with an indicator light 22. This embodiment improves the waterproof capability of the electric bolt lock by providing a waterproof box, giving the electric bolt lock more application scenarios. By providing an indicator light 22 on the panel 23, it is convenient to observe the operating status of the electric bolt lock.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "one example," "some embodiments," "an example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An electric bolt lock, characterized in that, include: The lock body is equipped with a lock tongue. A locking plate, wherein the locking plate is provided with a locking hole that mates with the locking tongue; The lock body includes a lock shell, inside which is a rotary motor for driving the bolt movement. The output shaft of the rotary motor is connected to a rotating shaft, and a slider is provided on the rotating shaft. A mating inclined surface is formed between the slider and the rotating shaft. When the rotating shaft rotates, the slider moves along the axial direction of the rotating shaft. A pull rod is movably connected to the slider. One end of the pull rod is movably connected to the slider, and the other end is hinged to the bolt drive rod. One end of the bolt drive rod is hinged to the pull rod, and the other end is movably connected to the bolt. When the rotary motor drives the rotating shaft to rotate, the slider moves along the axial direction of the rotating shaft, driving the pull rod. The pull rod drives the lock tongue drive rod to move. Under the drive of the lock tongue drive rod, the lock tongue extends from the lock housing into the lock hole or retracts from the lock hole into the lock housing.

2. The electric bolt lock according to claim 1, characterized in that, The slider is sleeved on the rotating shaft, and a connecting sleeve is sleeved on the output shaft of the motor. The rotating shaft is connected to the output shaft of the motor through the connecting sleeve. A protrusion is provided on the connecting sleeve, and a slider spring is sleeved on the connecting sleeve between the slider and the protrusion. The slider spring is a compression spring.

3. The electric bolt lock according to claim 1, characterized in that, The latch drive rod is a curved rod with a drive rod pin at its bend. When the pull rod moves, the latch drive rod rotates around the drive rod pin under the pull rod's influence. A drive rod torsion spring is fitted on the drive rod pin. The drive rod torsion spring applies a force to the latch drive rod to push the latch out of the lock housing.

4. The electric bolt lock according to claim 3, characterized in that, The slider is provided with a guide groove that is closed at one end. One end of the pull rod that connects to the slider is located in the guide groove, and the closed end of the guide groove is the end that is close to the locking tongue drive rod.

5. The electric bolt lock according to claim 3, characterized in that, The bottom of the latch has a notch for engaging with the latch drive rod. One end of the latch drive rod engages with the latch and extends into the notch. The pull rod drives the latch drive rod to rotate around the drive rod pin, thereby driving the latch to move.

6. The electric bolt lock according to claim 5, characterized in that, A roller is provided at one end of the latch drive rod that extends into the notch. When the pull rod drives the latch drive rod to rotate around the drive rod pin, the roller contacts the inner surface of the notch.

7. The electric bolt lock according to claim 1, characterized in that, A latch guide sleeve is provided between the lock housing and the latch.

8. The electric bolt lock according to claim 1, characterized in that, The lock housing contains a PCBA control board, which is connected to the control system via a control power line.

9. The electric bolt lock according to claim 1, characterized in that, The lock housing is also equipped with a waterproof box, which includes a box body and a box cover. The rotary motor, the rotating shaft and the slider are all located inside the waterproof box. The box cover is fastened to the box body, and the box cover is provided with an opening for the pull rod to extend into the box body.

10. The electric bolt lock according to claim 1, characterized in that, The lock housing includes a housing and a panel. The rotary motor, the rotating shaft, the slider, the pull rod, and the lock tongue are all disposed inside the housing. The panel is provided with a lock tongue hole for the extension, and the panel is also provided with an indicator light.

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