Latching drive assembly and door lock using the same

Abstract

This utility model discloses a latch drive assembly and a door lock using the same, comprising at least: a latch, which includes a main body and a first force-receiving part disposed on the main body; a gear transmission assembly, which includes at least a power output gear; the power output gear is provided with a first force transmission part adapted to engage with the first force-receiving part in both disengaged and engaged states; and a driver, which outputs torque to drive the gear transmission assembly to control the switching between the disengaged and engaged states of the first force transmission part and the first force-receiving part; when the driver drives the gear transmission assembly to operate, the first force transmission part is adapted to engage with the first force-receiving part and push against the first force-receiving part to make the main body perform linear or curvilinear motion. This utility model simplifies the overall structure of the latch drive assembly, reduces production costs and failure rates, and also reduces unlocking response time and improves unlocking efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and in particular to a latch drive assembly and a door lock using the same. Background Technology

[0002] The door locks on current home appliances are generally electronic locks. Electronic locks are usually controlled by electromagnets to open and close the lock. The working process is that the controller controls the electromagnet to be energized, and then the electromagnet pulls the latch, causing the lock nose to disengage from the latch limit. However, this type of lock has certain defects. According to the characteristics of electromagnets, the smaller the axial distance between the moving iron core and the stationary iron core, the greater the electromagnetic force generated. When unlocking, the electromagnet can only provide a very small pulling force, and the driving force of the electromagnet is inconsistent and consumes a lot of power.

[0003] Therefore, due to the inherent defects of electromagnet locks, some current locks use a motor in conjunction with a gear set to drive the latch and achieve unlocking. Examples of this include the technical solutions disclosed in announcement numbers CN109113443B and CN212614161U. While this type of lock avoids the problems associated with electromagnet drives, the gear sets used do not directly engage with the latch. This indirect engagement increases the overall complexity of the lock structure, production costs, and failure rate. Furthermore, the need for additional transmission components between the gear set and the latch increases the length of the transmission chain, potentially extending the transmission time and thus increasing unlocking response time and efficiency.

[0004] Therefore, in view of the problems existing in the technical solution of using a motor and gear assembly to realize the locking drive, further optimization and improvement of the structure is needed in order to simplify the overall structure. Utility Model Content

[0005] The primary objective of this invention is to provide a locking drive assembly to address the technical problem of simplifying its overall structure.

[0006] The second objective of this invention is to provide a door lock that solves the technical problem of simplifying the overall structure of the latch drive assembly used therein.

[0007] The locking drive assembly of this utility model is implemented as follows: A latching drive assembly, comprising at least: The latch includes a main body and a first force-bearing part disposed on the main body; A gear transmission assembly, comprising at least a power output gear; the power output gear is provided with a first force transmission part adapted to engage with a first force receiving part in a disengaged or contacted manner; A driver, which outputs torque to drive the gear transmission assembly to control the switching between the first force transmission part and the first force receiving part in a disengaged and engaged state; When the driver drives the gear transmission assembly, the first force transmission part is adapted to connect with the first force receiving part and push the first force receiving part to make the main body move in a straight line or a curve.

[0008] In an optional embodiment of this utility model, the first force-receiving part protrudes from the side end face of the main body facing the power output gear; and When the driver drives the gear transmission assembly, the main body is adapted to make linear motion under the pushing action of the power output gear.

[0009] In an optional embodiment of this utility model, one side end of the main body is further provided with an elastic element that is adapted to stretch and deform along the linear motion trajectory of the main body.

[0010] In an optional embodiment of this utility model, the main body is further provided with a second force-bearing part; and The latch drive assembly further includes a pressure rod; the pressure rod is provided with a second force transmission part that is adapted to cooperate with the second force receiving part in a way that is either separate from or connected to it.

[0011] In an optional embodiment of this invention, the second force-receiving part and the first force-receiving part are respectively located on two opposite side end faces of the main body; and The pressure rod is also provided with a pressing part for receiving force.

[0012] In an optional embodiment of this utility model, the latch drive assembly further includes a trigger linkage group adapted to cooperate with the power output gear; The trigger linkage group includes an actuating element disposed on the power output gear, a lever adapted to be disengaged from or engaged with the actuating part, an electrical signal component adapted to be triggered by the lever, and an elastic body mated with the lever. When the actuating element is in contact with the lever, the lever triggers the electrical signal components, and the elastic body is compressed and deformed. When the actuating element is separated from the lever, the elastic body reverts to its original shape, causing the lever to release the triggering of the electrical signal components.

[0013] In an optional embodiment of this utility model, the lever is provided with a boss portion that protrudes toward the power output gear and is suitable for contacting the triggering element, and the lever is also provided with a trigger portion for triggering the contacts of the electrical signal components.

[0014] In an optional embodiment of this utility model, one end of the lever is sleeved on a fixed shaft; The elastic body is a torsion spring mounted on a fixed shaft, and the lever is pre-set with a conformal part for abutting and engaging with an extension arm of the torsion spring. When the trigger is separated from the lever, the torsion spring returns to its original shape and causes the lever to rotate around a fixed axis to release the triggering of the electrical signal components.

[0015] In an optional embodiment of this invention, the trigger linkage group further includes a first limiting member adapted to engage with the end of the lever facing away from the electrical signal component and away from the fixed axis; and The trigger linkage group also includes a second limiting member adapted to engage with the end of the lever facing the electrical signal component and away from the fixed axis.

[0016] The door lock of this utility model is implemented as follows: A door lock includes: the aforementioned latch drive assembly, and a latch tongue adapted to engage with and disengage from the main body of the latch.

[0017] In an optional embodiment of this utility model, the main body is provided with a lock head for engaging the lock tongue, and the lock tongue is provided with a lock hole suitable for the lock head to be inserted.

[0018] In an optional embodiment of this utility model, the lock head has an inclined guide surface suitable for being pushed by the outer wall surface of the lock tongue and an anti-disengagement surface that abuts against the inner wall surface of the lock hole.

[0019] By adopting the above technical solution, this utility model has the following beneficial effects: The latch drive assembly and the door lock using it are designed so that the power output gear of the gear transmission group is directly connected to the latch. On the one hand, this simplifies the overall structure of the latch drive assembly, reduces production costs and failure rate; on the other hand, it also reduces unlocking response time and improves unlocking efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the door lock of this utility model; Figure 2 This is an exploded view of the door lock of this utility model; Figure 3 This is a partial structural diagram of the door lock housing of this utility model; Figure 4 This is a schematic diagram of the latch structure of the door lock of this utility model; Figure 5 This is a schematic diagram of the lever structure of the door lock of this utility model; Figure 6 These are schematic diagrams of the power output gear of the door lock of this utility model from two different perspectives. Figure 7This is a schematic diagram of the latch drive assembly of the door lock according to the present invention; Figure 8 This is a schematic diagram of the cooperation structure between the trigger and the protruding part of the lever in the door lock of this utility model; Figure 9 This is a schematic diagram of the mating structure between the bolt and the inclined guide surface of the lock head of the door lock according to this utility model; Figure 10 This is a schematic diagram of the mating structure between the bolt and the anti-disengagement surface of the lock head of the door lock according to this utility model; Figure 11 This is a schematic diagram of the door lock of this utility model in the locked state of the bolt and the latch; Figure 12 This is a schematic diagram of the door lock of this utility model with the bolt and latch in the unlocked state; Figure 13 This is a schematic diagram of the door lock of this utility model in the unlocked state when the bolt and latch are electrically unlocked and after the latch has been reset. Figure 14 This is a schematic diagram of the door lock of this utility model in the unlocked state when the bolt and latch are manually unlocked; Figure 15 This is a schematic diagram of the door lock of this utility model, showing the bolt about to engage with the latch in the locked state.

[0021] In the figure: housing 1, guide groove 11, fixed shaft 12, support wall 13, second limiting member 14, first limiting member 15, main body 2, first force-bearing part 21, second force-bearing part 22, guide rib 23, lock head 24, inclined guide surface 241, anti-disengagement surface 242, inner countersunk hole 25, power output gear 31, first force transmission part 311, triggering part 312, drive gear 32, transition gear 33, worm gear 41, motor 42, spring 5, pressure rod 6, second force transmission part 61, pressing part 62, central hole 63, lever 7, boss part 71, trigger part 72, conforming part 73, electrical signal component 8, torsion spring 9, lock tongue 10, lock hole 101. Detailed Implementation

[0022] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] Example 1: Please see Figures 1 to 8As shown, this embodiment provides a latch drive assembly, which includes at least: a latch, a gear transmission assembly, and a driver for cooperative use. Generally speaking, the latch includes a main body 2 and a first force-receiving part 21 disposed on the main body 2; the gear transmission assembly includes at least a power output gear 31; the power output gear 31 is provided with a first force transmission part 311 adapted to engage and disengage with the first force-receiving part 21; the driver is used to output torque to drive the gear transmission assembly to control the switching between the disengagement and engagement states of the first force transmission part 311 and the first force-receiving part 21. The driver here may be, for example, but not limited to, a motor 42 equipped with a worm gear 41, and the gear transmission assembly may further include a drive gear 32 and a transition gear 33 disposed between the worm gear 41 and the power output gear 31.

[0024] Based on the above structure, when the driver drives the gear transmission assembly to operate, the first force transmission part 311 is adapted to connect with the first force receiving part 21 and push the first force receiving part 21 to make the main body part 2 perform linear or curvilinear motion. It should be noted that when the latch drive assembly of this embodiment is applied in a specific lock, the latch cooperates with the bolt 10. The locking and unlocking state is switched by adjusting the cooperation state between the bolt 10 and the latch. Therefore, theoretically, when the latch is unlocked from the bolt 10, the latch can perform linear or curvilinear motion. This embodiment does not make an absolute limitation on this.

[0025] In the following embodiments, for ease of description and clarity, this embodiment will be illustrated with an example of the latch performing linear motion, in conjunction with the accompanying drawings: The main body 2 is generally elongated, and the first force-bearing part 21 protrudes from the side end face of the main body 2 facing the power output gear 31 (in this embodiment, the first force-bearing part 21 is provided on a side end face of the main body 2 in a length direction). The shape of the first force-bearing part 21 is not absolutely limited.

[0026] In order to limit the linear motion trajectory of the latch relatively accurately, a guide structure is provided between the latch and the housing 1 for accommodating the latch drive assembly of this embodiment. The guide structure may be a guide rib 23 pre-set on the main body 2 and a guide groove 11 adapted to the guide rib 23 provided in the housing 1.

[0027] Furthermore, considering that the main body 2 needs to be reset after losing external force, one side of the main body 2 in this embodiment is also provided with an elastic element that is suitable for stretching and deforming along the linear movement trajectory of the main body 2. The elastic element here can be a spring 5, and an inner countersunk hole 25 suitable for partial insertion of the elastic element is preset in the main body 2. The end of the elastic element away from the main body 2 can be connected to the housing 1.

[0028] Based on the above, it should also be noted that, considering the need to contact the latch to lock the latch tongue 10 in the event of a power outage, the main body 2 of this embodiment is also provided with a second force receiving part 22; and the latch driving assembly also includes a pressure rod 6; the pressure rod 6 is provided with a second force transmission part 61 that is suitable for being separated from and connected to the second force receiving part 22.

[0029] More specifically, the second force-receiving part 22 and the first force-receiving part 21 are respectively located on two opposite side end faces of the main body part 2 (that is, the second force-receiving part 22 is set on the other side end face of the main body part 2 in the length direction, and the pressure rod 6 and the gear transmission assembly are respectively set on both sides of the length direction of the main body part 2). Since the overall pressure rod 6 is suitable for manual control, a pressing part 62 for receiving force is also provided on the pressure rod 6.

[0030] In addition, in conjunction with the accompanying drawings, in an alternative scenario, the pressure rod 6 achieves its pushing effect on the second force-bearing part 22 through rotational motion after being subjected to the force of the hand. Therefore, the pressure rod 6 is provided with a central hole 63 that rotates with the housing 1, and this central hole 63 can be connected to the housing 1 through a connecting shaft.

[0031] Next, it should be noted that the locking drive assembly used in this embodiment also includes a trigger linkage group suitable for cooperating with the power output gear 31.

[0032] To illustrate this with reference to the accompanying drawings, consider one scenario: the trigger linkage assembly includes an actuating element 312 mounted on the power output gear 31, a lever 7 adapted to engage with the actuating element in both disengaged and contacted positions, an electrical signal component 8 adapted to be triggered by the lever 7, and an elastic body mating with the lever 7. Since both the actuating element 312 and the first force transmission part 311 are designed on the power output gear 31, to avoid interference and influence during their design and manufacturing, the actuating element 312 and the first force transmission part 311 can be located on two different axial end faces of the power output gear 31. Alternatively, both the actuating element 312 and the first force transmission part 311 can be integrally machined with the power output gear 31.

[0033] Based on the above, when the trigger 312 is in contact with the lever 7, the lever 7 triggers the electrical signal component 8, and the elastic body is deformed under pressure; when the trigger 312 is separated from the lever 7, the elastic body resets its deformation so that the lever 7 releases the triggering of the electrical signal component 8.

[0034] More specifically, in this embodiment, the electrical signal component 8 may be, for example, but not limited to, a micro switch, and the lever 7 is provided with a boss portion 71 that protrudes toward the power output gear 31 and is suitable for contacting the contact member 312, and the lever 7 is also provided with a trigger portion 72 for triggering the contact of the electrical signal component 8.

[0035] Furthermore, one end of the lever 7 is sleeved on a fixed shaft 12; the elastic body is a torsion spring 9 fitted on the fixed shaft 12, and the lever 7 has a pre-set conformal part 73 for abutting and engaging with one extension arm of the torsion spring 9; of course, it can be understood that for the other extension arm of the torsion spring 9, there is also a support wall 13 inside the housing 1 for abutting and engaging with this extension arm. Thus, for the torsion spring 9 as a whole, the extension arm abutting with the support wall 13 always remains stationary, only the extension arm engaging with the conformal part 73 of the lever 7 will move with the movement of the lever 7, thereby changing the state of the torsion spring 9 as a whole. Therefore, when the trigger 312 is separated from the lever 7, the torsion spring 9 returns to its original deformation to cause the lever 7 to rotate around the fixed shaft 12 to release the triggering of the electrical signal component 8.

[0036] Furthermore, it should be noted that the trigger linkage assembly also includes a first limiting member 15 adapted to engage with the end of the lever 7 facing away from the electrical signal component 8 and away from the fixed shaft 12; and a second limiting member 14 adapted to engage with the end of the lever 7 facing the electrical signal component 8 and away from the fixed shaft 12. Both the first limiting member 15 and the second limiting member 14 are fixed within the housing 1, and the distance between them forms the maximum trajectory range for the lever 7 during its rotational movement around the fixed shaft 12. The design of the second limiting member 14, while satisfying the triggering function of the lever 7 for the microswitch, also protects the microswitch from damage caused by the lever 7.

[0037] In summary, for the latch drive assembly of this embodiment, by designing the power output gear 31 of the gear transmission group to be directly connected to the latch, on the one hand, the overall structure of the latch drive assembly can be simplified, reducing production costs and failure rate; on the other hand, it can also reduce unlocking response time and improve unlocking efficiency.

[0038] Example 2: Please see Figures 1 to 15 As shown, based on the latch drive assembly of Embodiment 1, this embodiment provides a door lock, including: the latch drive assembly of Embodiment 1, and a latch 10 adapted to engage with the main body 2 of the latch in a disengaged or engaged manner. It is understood that the overall door lock has a housing 1 to accommodate the latch drive assembly, and the latch 10 achieves unlocking and unlocking by partially entering and exiting the housing 1. Furthermore, regarding the pressure lever 6, its pressing part 62 extends outside the housing 1, facilitating hand operation of the pressing part 62.

[0039] It should be noted that the main body 2 is provided with a lock head 24 for engaging the lock tongue 10, and the lock tongue 10 is provided with a lock hole 101 suitable for partial insertion of the lock head 24. When the latch and the lock tongue 10 are locked, the lock tongue 10 is partially inserted into the lock hole 101, and when the lock tongue 10 and the latch are unlocked, the lock tongue 10 is removed from the housing 1.

[0040] More specifically, the lock head 24 has an inclined guide surface 241 adapted to be pushed by the outer wall surface of the latch 10 and an anti-disengagement surface 242 abutting against the inner wall surface of the lock hole 101.

[0041] The following section, with reference to the accompanying drawings, details the different states of the door lock during use in this embodiment: First, the bolt 10 of the door lock is in the locked state with the latch. The latch 10 is inserted into the lock hole 101. Under the action of the actuating element 312 and the boss 71, the lever 7 overcomes the elastic force of the torsion spring 9, thereby triggering the micro switch. The position of the power output gear 31 is determined by the triggering state of the micro switch, thereby shortening the response time for the next unlocking. The first force transmission part 311 of the power output gear 31 is close to the first force receiving part 21 of the latch, with a small distance between them; while the second force transmission part 61 of the pressure lever 6 is in contact with the second force receiving part 22 of the latch at this time.

[0042] Second, an electric unlocking method is used to unlock the latch and bolt 10. When the driver is powered on, the power output gear 31 rotates, causing the first force transmission part 311 to engage with the first force receiving part 21 of the latch. The latch moves linearly away from the latch tongue 10 along the guide groove 11 of the housing 1, overcoming the elastic force of the spring 5 (the spring 5 is compressed and deformed by the pressure of the latch). This causes the latch head 24 to separate from the lock hole 101 of the latch tongue 10, thus completing the unlocking. At the same time, the actuating element 312 of the power output gear 31 separates from the boss part 71 of the lever 7. At this time, under the action of the torsion spring 9, the trigger part 72 of the lever 7 separates from the contact of the micro switch, thus becoming an untriggered state. The lever 7 then engages with the first limiting element 15 of the housing 1 assembly.

[0043] Based on the above, when the power output gear 31 continues to rotate, causing its first force transmission part 311 to separate from the first force receiving part 21, the latch will move linearly to reset under the action of the spring 5; while the power output continues to rotate under the drive of the driver until the contact member 312 contacts the boss part 71 of the lever 7, and the micro switch will stop, thus preparing for the next unlocking.

[0044] Third, the unlocking process between the latch and the bolt 10 is achieved by manual unlocking. When manually unlocking, press the pressing part 62 of the pressing rod 6, and the pressing rod 6 will rotate around the central hole 63. Its second force transmission part 61 will lift the second force receiving part 22 of the latch away from the side of the bolt 10, so that the lock head 24 of the latch is separated from the lock hole 101 of the bolt 10, thus unlocking can be achieved.

[0045] Fourth, the locking bolt 10 gradually enters the housing 1 to achieve the locking process between the locking bolt 10 and the latch. The locking hole 101 end of the latch 10 is gradually inserted into the housing 1, and its locking hole 101 end contacts the inclined guide surface 241 of the latch head 24. The inclined guide surface 241 is an inclined structure, and the force on the front end of the latch 10 against the inclined guide surface 241 is shown in the attached figure of the instruction manual. Figure 9 As shown, the total force on the guide surface is f. Because it is an inclined plane, the force acting on it is divided into an upward component f1 and an inward component f2, where f1 > f2. This is to make it easier for the latch 10 to lift the latch, thus making it easier to insert. At this time, under the action of the upward component f1, the latch overcomes the elastic force of the spring 5 and rises upward along the guide groove 11 of the housing 1 until the latch 10's lock hole 101 end passes the lock head 24. The latch returns to its original position under the action of the spring 5, and the latch 10's lock hole 101 end contacts and engages with the lock head 24's anti-disengagement surface 242. Under the obstruction of the latch, the latch 10 cannot disengage outward, i.e., it is in a locked state. It should be noted here that the lock head 24's anti-disengagement surface 242 is not a vertical plane parallel to the linear movement trajectory of the latch, but has a certain angle β with the vertical plane. The force state here is as follows. Figure 10 As shown, the reverse pulling force of the bolt 10 on the lock head 24 perpendicular to the anti-disengagement surface 242 is F, of which the horizontal component is F1 and the vertical component is F2. Here, the two components F1>F2, in order to ensure that the bolt 10 will not easily disengage; the purpose of designing the included angle β here is to make unlocking easier when manually and electrically unlocking.

[0046] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0047] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the 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.

[0048] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0050] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may 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" the first 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 first 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.

Claims

1. A latching drive assembly, characterized in that, At least including: The latch includes a main body and a first force-bearing part disposed on the main body; A gear transmission assembly, comprising at least a power output gear; the power output gear is provided with a first force transmission part adapted to engage with a first force receiving part in a disengaged or contacted manner; A driver, which outputs torque to drive the gear transmission assembly to control the switching between the first force transmission part and the first force receiving part in a disengaged and engaged state; When the driver drives the gear transmission assembly, the first force transmission part is adapted to connect with the first force receiving part and push the first force receiving part to make the main body move in a straight line or a curve.

2. The locking drive assembly according to claim 1, characterized in that, The first force-bearing part protrudes from the side end face of the main body facing the power output gear; as well as When the driver drives the gear transmission assembly, the main body is adapted to make linear motion under the pushing action of the power output gear.

3. The locking drive assembly according to claim 2, characterized in that, One end of the main body is also provided with an elastic element that is adapted to stretch and deform along the linear motion trajectory of the main body.

4. The latching drive assembly according to claim 2 or 3, characterized in that, The main body is also provided with a second force-bearing part; and The latch drive assembly further includes a pressure rod; the pressure rod is provided with a second force transmission part that is adapted to cooperate with the second force receiving part in a way that is either separate from or connected to it.

5. The locking drive assembly according to claim 4, characterized in that, The second force-bearing part and the first force-bearing part are respectively located on two opposite side end faces of the main body; and The pressure rod is also provided with a pressing part for receiving force.

6. The locking drive assembly according to claim 1, characterized in that, The latch drive assembly also includes a trigger linkage group suitable for cooperating with the power output gear; The trigger linkage group includes an actuating element disposed on the power output gear, a lever adapted to be disengaged from or engaged with the actuating part, an electrical signal component adapted to be triggered by the lever, and an elastic body mated with the lever. When the actuating element is in contact with the lever, the lever triggers the electrical signal components, and the elastic body is compressed and deformed. When the actuating element is separated from the lever, the elastic body reverts to its original shape, causing the lever to release the triggering of the electrical signal components.

7. The latching drive assembly according to claim 6, characterized in that, The lever has a boss that protrudes towards the power output gear and is suitable for contacting the triggering element. The lever also has a triggering part for triggering the contacts of electrical signal components.

8. The latching drive assembly according to claim 6 or 7, characterized in that, One end of the lever is sleeved on a fixed shaft; The elastic body is a torsion spring mounted on a fixed shaft, and the lever is pre-set with a conformal part for abutting and engaging with an extension arm of the torsion spring. When the trigger is separated from the lever, the torsion spring returns to its original shape and causes the lever to rotate around a fixed axis to release the triggering of the electrical signal components.

9. The latching drive assembly according to claim 8, characterized in that, The trigger linkage group further includes a first limiting member adapted to engage with the end of the lever facing away from the electrical signal component and away from the fixed axis; and The trigger linkage group also includes a second limiting member adapted to engage with the end of the lever facing the electrical signal component and away from the fixed axis.

10. A door lock, characterized in that, include: The latch drive assembly as described in any one of claims 1 to 9, and a latch tongue adapted to engage with the main body of the latch in a disengaging or engaging manner.

11. The door lock according to claim 10, characterized in that, The main body is provided with a lock head for engaging the lock tongue, and the lock tongue is provided with a lock hole suitable for the lock head to be inserted.

12. The door lock according to claim 11, characterized in that, The lock head has an inclined guide surface suitable for being pushed by the outer wall surface of the lock tongue and an anti-disengagement surface that abuts against the inner wall surface of the lock hole.

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