Integrated self-sucking door lock

Abstract

This utility model relates to an integrated self-closing door lock, comprising: a first housing and a second housing perpendicular to each other, with a fish-mouth-shaped section dividing the first and second housings into a waterproof area and a non-waterproof area; a ratchet and pawl assembly rotatably mounted on the first housing, the pawl assembly capable of actuating the ratchet; a self-closing motor driving the ratchet via the self-closing assembly to achieve a self-closing function; an electric release motor driving the pawl assembly via an electric release assembly to achieve an electric release function; an external release assembly having an engaged and disengaged state; a central control motor switching the engaged and disengaged states of the external release assembly via a central control assembly; the self-closing motor is located in the waterproof area of ​​the first housing, and the electric release motor and central control motor are located in the waterproof area of ​​the second housing; the angle between the output shaft of the electric release motor and the output shaft of the central control motor is greater than 35 degrees. This utility model can achieve self-closing within the lock body and has waterproof functionality and manual unlocking functionality in emergency situations.

Description

Technical Field

[0001] This utility model relates to the field of automotive door locks, and in particular to an integrated self-closing door lock. Background Technology

[0002] In a vehicle door lock system, the lock body mechanism is the core component that enables the door to lock and unlock.

[0003] In existing self-closing lock mechanisms, the split-type design consists of a lock body and a self-closing actuator, connected by a Bowden cable. The self-closing motor is located within the actuator and externally mounted on the lock body. This design is complex, occupies a significant amount of door space, and is costly.

[0004] In existing self-priming lock mechanisms, integrated designs place the self-priming and ice-breaking motors at the bottom of the lock body, below the fish mouth position. This design makes the motors susceptible to water ingress, posing a quality risk. Some existing self-priming lock mechanisms have eliminated the independent electric safety motor; the external safety function must operate according to a specific timing and control logic, increasing electronic control complexity and limiting safety after a vehicle collision.

[0005] In existing self-closing locking mechanisms, some designs have completely removed the electric safety function and the external opening mechanical structure. If the power is lost after a vehicle collision, external rescue will be difficult.

[0006] Therefore, it is necessary to provide an integrated self-closing door lock that can achieve self-closing within the lock body, and has waterproof function and manual unlocking function in emergency situations. Utility Model Content

[0007] The purpose of this utility model is to provide an integrated self-closing door lock that can achieve self-closing within the lock body, and has waterproof function and manual unlocking function in emergency situations.

[0008] To address the problems existing in the prior art, this utility model provides an integrated self-closing door lock, comprising:

[0009] A first shell and a second shell are perpendicular to each other, and a line of intersection of the Z-axis and the first shell and the second shell is parallel to the line of intersection of the Z-axis and the line of intersection of the Z-axis. A concave fish mouth perpendicular to the Z-axis is provided in the middle of the first shell, and the fish mouth divides the first shell into a waterproof area and a non-waterproof area. The fish mouth also divides the second shell into a waterproof area and a non-waterproof area. The waterproof areas of the first shell and the second shell are located on the first side of the fish mouth, and the non-waterproof areas of the first shell and the second shell are located on the second side of the fish mouth.

[0010] A ratchet is rotatably mounted on a first shaft of the first housing, and a pawl assembly is rotatably mounted on a second shaft of the first housing, the pawl assembly being able to actuate the ratchet;

[0011] A self-priming assembly and a self-priming motor are located on the first housing. The self-priming motor drives a ratchet through the self-priming assembly to achieve the self-priming function.

[0012] An electric release assembly and an electric start motor are located on the second housing. The electric start motor is driven by the electric release assembly to push the pawl assembly, thereby realizing the electric release function.

[0013] The external release component located in the first housing has an engaged state and an unengaged state. In the engaged state, the external release component cannot pull the pawl component and cannot unlock. In the unengaged state, the external release component can pull the pawl component to unlock.

[0014] The central control assembly and central control motor are located on the second housing. The central control motor switches the locked and unlocked states of the external release assembly through the central control assembly.

[0015] The self-priming motor is located in the waterproof area of ​​the first housing, the electric start motor is located in the waterproof area of ​​the second housing, and the central control motor is located in the waterproof area of ​​the second housing.

[0016] The output shafts of the electric starter motor and the central control motor are offset from each other, and the angle between the output shafts of the electric starter motor and the central control motor is greater than 35 degrees.

[0017] Optionally, in the integrated self-closing door lock, the pawl assembly includes a pawl and a pawl release rod, the pawl release rod being fixed to the pawl and rotating with the pawl around a second axis.

[0018] Optionally, in the integrated self-closing door lock, the self-closing component includes:

[0019] The first worm gear is fixedly connected to the output shaft of the self-priming motor;

[0020] A first double gear is rotatably mounted on the third shaft of the first housing. The first double gear has a first large gear and a first small gear. The first worm and the first large gear form a worm gear connection.

[0021] A second double gear is rotatably mounted on the fourth shaft of the first housing. The second double gear has a second large gear and a second small gear, and the first small gear and the second large gear form a gear connection.

[0022] A gear disk rotatably mounted on the fifth shaft of the first housing, the second pinion and the gear disk forming a gear connection;

[0023] A first push rod rotatably mounted on the gear plate contacts the ratchet, thereby pushing the ratchet to rotate around the first axis to achieve a self-engaging function.

[0024] Optionally, in the integrated self-closing door lock, the electric release component includes:

[0025] The second worm gear is fixedly connected to the output shaft of the electric motor;

[0026] A first gear is rotatably mounted on the second housing, and the first gear and the second worm form a worm gear transmission. The first gear has a first protrusion.

[0027] A second lever is rotatably mounted on the second housing. The first end of the second lever engages with the first protrusion, and the second end of the second lever engages with the pawl assembly. The pawl assembly is pushed by the first gear and the second lever to achieve the electric release function.

[0028] Optionally, in the integrated self-closing door lock, the external release component includes:

[0029] A first lever is rotatably mounted on the sixth axis of the first housing, and the rotation of the first lever drives the pawl assembly to rotate.

[0030] An external release rod is rotatably mounted on the seventh axis of the first housing;

[0031] A movable coupling rod is positioned between the outer release rod and the first lever. When the coupling rod is in the coupling position, the outer release rod drives the first lever to rotate together through the coupling rod, which is the unlocked state. When the coupling rod is in the decoupled position, the outer release rod cannot drive the first lever to rotate through the coupling rod, which is the engaged state.

[0032] Optionally, in the integrated self-closing door lock, the central control component includes:

[0033] The third worm gear is fixedly connected to the output shaft of the central control motor;

[0034] A second gear is rotatably mounted on the second housing. The second gear and the third worm form a worm gear transmission. The second gear is provided with a second protrusion.

[0035] A pull rod is connected at one end to the second protrusion, and the other end of the pull rod is connected to the coupling rod.

[0036] Compared with the prior art, the present invention has the following advantages:

[0037] (1) This utility model adopts an integrated approach to set the self-closing component inside the lock body, which not only realizes the self-closing function, but also simplifies the self-closing mechanism, reduces the space occupied by the car door, and lowers the cost.

[0038] (2) The functions of the electric starter motor and the central control motor in this utility model are independent of each other. On the one hand, when the electric starter motor performs electric opening or electric reset, it does not affect the locking or unlocking state provided by the central control motor. On the other hand, when the central control motor performs locking or unlocking, it does not affect the electric opening and electric reset functions provided by the electric starter motor. There are no structural restrictions on the working sequence or control timing between the two. Therefore, after a vehicle collision, the vehicle can directly supply power to the central control motor without judging the lock status, minimizing the time for unlocking the lock and achieving external release coupling, which is convenient for external rescue. This is crucial for the limited survival time of the electronic control system after a collision, thereby further improving safety.

[0039] (3) This utility model places the self-priming motor, the electric start motor and the central control motor in the waterproof area, which improves the quality of the door lock and extends its service life. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structural blocks of the lock body mechanism provided in an embodiment of the present utility model.

[0041] Figure 2-4 A three-dimensional schematic diagram of the overall structure of the lock body mechanism provided in the embodiment of this utility model.

[0042] Figure 5 This is a schematic diagram of the engaging component of the lock mechanism provided in an embodiment of the present utility model.

[0043] Figure 6 This is a schematic diagram of the unlocked state of the lock mechanism provided in an embodiment of the present utility model.

[0044] Figure 7 This is a schematic diagram of the locking mechanism in the locked state provided in an embodiment of the present utility model.

[0045] Figure 8 A schematic diagram of the second housing assembly of the lock mechanism provided in an embodiment of this utility model.

[0046] Among them, 29-first housing; 29a-fish mouth; 121-second housing; 11-ratchet; 12-pawl; 16-pawl release lever; 180-self-priming assembly; 181-self-priming motor; 182-first worm gear; 183-first double gear; 184-second double gear; 185-gear disc; 186-first push rod; a1-first shaft; a2-second shaft; a3-third shaft; a4-fourth shaft; a5-fifth shaft; 70-electric release assembly; 71-electric start motor; 72-second worm gear; 73-first gear; 75-second lever; 60-external release assembly; 61-external release lever; 63-coupling rod; 18-first lever; 165-Bowden pull cable; 80-central control assembly; 81-central control motor; 82-third worm gear; 83-second gear; 65-pull rod. Detailed Implementation

[0047] The specific embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0048] In the description of this application, 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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 application.

[0049] To address the problems existing in the prior art, this utility model provides an integrated self-closing door lock, such as... Figure 1-8 As shown, it includes:

[0050] A first housing 29 and a second housing 121 are perpendicular to each other. The first housing 29 is parallel to the lock body mounting plane, and the second housing 121 is perpendicular to the lock body mounting plane. A Z-axis is parallel to the intersection line of the first housing 29 and the second housing 121, which are perpendicular to each other, and a Y-axis is perpendicular to the Z-axis. In one embodiment, the second housing 121 is L-shaped, and the narrow face of the L-shaped second housing 121 coincides with the first housing 29. In this case, the Z-axis is parallel to the turning line of the L-shaped second housing 121. In another embodiment, the edges of the first housing 29 and the second housing 121 are connected by a bolt structure or welding. In this case, the Z-axis is parallel to the connection line of the first housing 29 and the second housing 121. Of course, the first housing 29 and the second housing 121 can also have other connection methods, as long as the Z-axis is parallel to the intersection line of the first housing 29 and the second housing 121.

[0051] A concave fish-mouth 29a perpendicular to the Z-axis is provided in the middle of the first housing 29, and the fish-mouth 29a divides the first housing 29 into a waterproof area (i.e., Figure 1-7 (Z+ area) and non-waterproof area (i.e. Figure 1-7 In the Z-region), the fish mouth 29a also divides the second shell 121 into a waterproof area (i.e., Figure 1-7 (Z+ area) and non-waterproof area (i.e. Figure 1-7 The first shell 29 waterproof area and the second shell 121 waterproof area are located on the first side of the fish mouth (i.e., the Z-region). Figure 1-7 The Z+ region, the non-waterproof area of ​​the first shell and the non-waterproof area of ​​the second shell are located on the second side of the fish mouth (i.e., Figure 1-7 (Middle Z-region).

[0052] In practice, side door locks are typically installed within the sheet metal of the car door along or near the vertical Z-axis of the vehicle body. The fish mouth 29a usually faces the inward Y-axis, and the door sheet metal has a lateral opening at the fish mouth 29a to accommodate the movement of the latch.

[0053] After the door lock is installed, during vehicle use, the fish mouth 29a is parallel to the horizontal plane. At this time, the Z+ area is above the Z- area. Water flows through the latch and fish mouth 29a, and under the influence of gravity, it continues to flow through the lock body area Z- below the fish mouth 29a. Therefore, the area through which water flows is considered non-waterproof. Correspondingly, the area z+ above the fish mouth 29a does not have water flowing through it and is considered waterproof. This utility model places all motors above the fish mouth 29a to prevent water ingress and improve the quality of the door lock.

[0054] A ratchet 11 is rotatably mounted on a first shaft a1 of the first housing 29, and a pawl assembly is rotatably mounted on a second shaft a2 of the first housing 29. The pawl assembly can move the ratchet 11. The second shaft a2 is parallel to the first shaft a1, and the second shaft a2 and the first shaft a1 are perpendicular to the first housing 29.

[0055] A self-priming assembly 180 and a self-priming motor 181 are located on the first housing 29. The self-priming motor 181 is driven by the self-priming assembly 180 to push the ratchet 11 to realize the self-priming function.

[0056] The electric release assembly 70 and the electric start motor 71 are located on the second housing 121. The electric start motor 71 is driven by the electric release assembly 70 to push the pawl assembly, release the restriction on the ratchet 11, and realize the electric release function.

[0057] The external release component 60 located in the first housing 29 has an engaged state and an unengaged state. In the engaged state, the external release component 60 cannot pull the pawl assembly and cannot be mechanically unlocked externally. In the unengaged state, the external release component 60 pulls the pawl assembly to complete the external mechanical unlocking.

[0058] The central control component 80 and the central control motor 81 are located on the second housing 121. The central control motor 81 switches the external release component 60 between the locked and unlocked states through the central control component 80.

[0059] Specifically, the self-priming motor 181 is located in the waterproof area of ​​the first housing 29 and is arranged parallel to the lock body mounting plane; the electric start motor 71 is located in the waterproof area of ​​the second housing 121, and the central control motor 81 is located in the waterproof area of ​​the second housing 121.

[0060] Preferably, the output shafts of the self-priming motor 181 and the electric start motor 71 are parallel, and the plane formed by them is perpendicular to the main direction (ZY plane) of the first housing 29. In door lock technology, the first housing 29 is usually referred to as the lock body housing, and the second housing 121 is referred to as the actuator housing.

[0061] Specifically, the pawl assembly includes a pawl 12 and a pawl release lever 16. The pawl release lever 16 is fixed to the pawl 12 and rotates with the pawl 12 around the second axis a2. The pawl 12 can hold the ratchet 11 in the locked position. When the pawl 12 rotates to a specific angle, it can release the constraint on the ratchet 11.

[0062] Preferably, both the pawl 12 and the ratchet 11 have a return spring.

[0063] The self-priming assembly 180 includes:

[0064] The first worm gear 182 is fixedly connected to the output shaft of the self-priming motor 181, and the first worm gear 182 rotates together with the self-priming motor 181.

[0065] A first double gear 183 is rotatably mounted on the third shaft a3 of the first housing 29. The first double gear 183 has a first large gear and a first small gear. The first worm 182 and the first large gear form a worm gear connection.

[0066] A second double gear 184 is rotatably mounted on the fourth shaft a4 of the first housing 29. The second double gear 184 has a second large gear and a second small gear, and the first small gear and the second large gear form a gear connection.

[0067] A gear disk 185 is rotatably mounted on the fifth shaft a5 of the first housing 29. The second pinion and the gear disk 185 form a gear connection; the aforementioned gear set reduces speed together and amplifies the output torque of the self-priming motor 181 to the gear disk 185. Figure 5 As shown, for the purpose of spatial arrangement and reducing the geometric volume of the lock body, the angle between the straight line formed by the third axis a3 and the fourth axis a4 and the output shaft of the self-priming motor 181 is greater than 20 degrees.

[0068] A first push rod 186, rotatably mounted on the gear disc 185, contacts the ratchet 11. When the self-priming assembly 180 moves in a specified direction, the gear disc 185 rotates clockwise around the fifth axis a5, driving the first push rod 186 to... Figure 5 As shown, when the left end moves, the first push rod 186 contacts the ratchet 11 and further pushes the ratchet 11 to rotate around the first axis a1, thus realizing the self-engaging function.

[0069] In this invention, the self-priming component 180 and the ratchet 11 are both located inside the first housing 29, eliminating the need for an external actuator and Bowden cable, thus simplifying the design and reducing costs.

[0070] The electro-discharge assembly 70 includes:

[0071] The second worm gear 72 is fixedly connected to the output shaft of the electric motor 71, and the electric motor 71 drives the second worm gear 72 to rotate.

[0072] A first gear 73 is rotatably mounted on the second housing 121. The first gear 73 and the second worm 72 form a worm gear transmission. The first gear 73 has a first protrusion.

[0073] A second lever 75 is rotatably disposed on the second housing 121. The first end of the second lever 75 engages with the first protrusion, and the second end of the second lever 75 engages with the pawl assembly.

[0074] When the electric motor 71 drives the second worm gear 72 to rotate, it further drives the first gear 73 and the second lever 75 to move. The second lever 75 can drive the pawl assembly to rotate, and the pawl assembly releases the restriction on the ratchet 11, realizing the electric release function.

[0075] External release component 60 includes:

[0076] A first lever 18 is rotatably mounted on the sixth axis of the first housing 29, and the rotation of the first lever 18 drives the pawl assembly to rotate.

[0077] An external release rod 61 is rotatably mounted on the seventh axis of the first housing 29; wherein the sixth axis and the seventh axis may be non-coincident or coincident.

[0078] A movable coupling rod 63 is positioned between the outer release rod 61 and the first lever 18, such as... Figure 6 As shown, when the coupling rod 63 is in the coupling position, the outer release rod 61 drives the first lever 18 to rotate together through the coupling rod 63, thus releasing the safety mechanism; Figure 7 As shown, when the coupling rod 63 is in the decoupled position, the outer release rod 61 cannot drive the first lever 18 to rotate through the coupling rod 63, which is the safety state.

[0079] Furthermore, Bowden cable 165 is connected to external release lever 61, and also to the vehicle's mechanical external door handle. In the unlocked state, Bowden cable 165, through external release lever 61, coupling lever 63, and first lever 18, further drives the pawl assembly to rotate, releasing the ratchet 11 and enabling the external release function to open the door. In the locked state, Bowden cable 165 and external release lever 61 cannot drive the first lever 18 to rotate through coupling lever 63; the pawl assembly continues to restrict the ratchet 11, preventing external release.

[0080] When a car loses power in a collision, the aforementioned mechanical opening method is more reliable than the electric release component 70, which relies on a continuous power supply. This reduces the difficulty of external rescue and increases the safety of the locking system and the car.

[0081] Central control component 80 includes:

[0082] The third worm gear 82 is fixedly connected to the output shaft of the central control motor 81, and the central control motor 81 drives the third worm gear 82 to rotate.

[0083] A second gear 83 is rotatably mounted on the second housing 121. The second gear 83 and the third worm 82 form a worm gear transmission. The second gear 83 is provided with a second protrusion.

[0084] A pull rod 65 is connected at one end to the second protrusion, and the other end of the pull rod 65 is connected to the coupling rod 63.

[0085] When the central control motor 81 drives the third worm gear 82, and further drives the second gear 83 to rotate, the latter drives the pull rod 65 to slide. The pull rod 65 further changes the position of the coupling rod 63, thereby changing the coupling or decoupling state of the coupling rod 63, which determines whether the external release component 60 is operable, and realizes the function of central control safety.

[0086] Preferably, the central control motor 81 is located above the electric start motor 71 (in the Z+ direction). It should be noted that, based on considerations of controlling the geometric position of the lock's center of gravity, all motors are positioned as close as possible to the lock body mounting surface, i.e., close to the direction of the first housing 29. (Reference) Figure 8 The distances from the center of gravity of the central control motor 81 and the electric start motor 71 to the first housing 29 are h81 and h71, respectively, and the value of h81 minus h71 is less than or equal to 20mm. Meanwhile, to reduce the overall volume, the output shaft of the electric start motor 71 is offset from the output shaft of the central control motor 81 to accommodate the position of the third worm gear 82, and the angle α between the output shafts of the electric start motor 71 and the central control motor 81 is greater than 35 degrees.

[0087] In summary, compared with the prior art, this utility model has the following advantages:

[0088] (1) This utility model adopts an integrated approach to set the self-closing component inside the lock body, which not only realizes the self-closing function, but also simplifies the self-closing mechanism, reduces the space occupied by the car door, and lowers the cost.

[0089] (2) The functions of the electric starter motor and the central control motor in this utility model are independent of each other. On the one hand, when the electric starter motor performs electric opening or electric reset, it does not affect the locking or unlocking state provided by the central control motor. On the other hand, when the central control motor performs locking or unlocking, it does not affect the electric opening and electric reset functions provided by the electric starter motor. There are no structural restrictions on the working sequence or control timing between the two. Therefore, after a vehicle collision, the vehicle can directly supply power to the central control motor without judging the lock status, minimizing the time for unlocking the lock and achieving external release coupling, which is convenient for external rescue. This is crucial for the limited survival time of the electronic control system after a collision, thereby further improving safety.

[0090] (3) This utility model places the self-priming motor, the electric start motor and the central control motor in the waterproof area, which improves the quality of the door lock and extends its service life.

[0091] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. An integrated self-sucking door lock, characterized by, include: A first and second shell that are perpendicular to each other, with a Z-axis parallel to the line of intersection of the first and second shells that is perpendicular to each other; A concave fish mouth perpendicular to the Z-axis is provided in the middle of the first shell. The fish mouth divides the first shell into a waterproof area and a non-waterproof area. The fish mouth also divides the second shell into a waterproof area and a non-waterproof area. The waterproof area of ​​the first shell and the waterproof area of ​​the second shell are located on the first side of the fish mouth, and the non-waterproof area of ​​the first shell and the non-waterproof area of ​​the second shell are located on the second side of the fish mouth. A ratchet is rotatably mounted on a first shaft of the first housing, and a pawl assembly is rotatably mounted on a second shaft of the first housing, the pawl assembly being able to actuate the ratchet; A self-priming assembly and a self-priming motor are located on the first housing. The self-priming motor drives a ratchet through the self-priming assembly to achieve the self-priming function. An electric release assembly and an electric start motor are located on the second housing. The electric start motor is driven by the electric release assembly to push the pawl assembly, thereby realizing the electric release function. The external release component located in the first housing has an engaged state and an unengaged state. In the engaged state, the external release component cannot pull the pawl component and cannot unlock. In the unengaged state, the external release component can pull the pawl component to unlock. The central control assembly and central control motor are located on the second housing. The central control motor switches the locked and unlocked states of the external release assembly through the central control assembly. The self-priming motor is located in the waterproof area of ​​the first housing, the electric start motor is located in the waterproof area of ​​the second housing, and the central control motor is located in the waterproof area of ​​the second housing. The output shafts of the electric starter motor and the central control motor are offset from each other, and the angle between the output shafts of the electric starter motor and the central control motor is greater than 35 degrees.

2. The integrated self-sucking door lock of claim 1, wherein The pawl assembly includes a pawl and a pawl release lever, the pawl release lever being fixed to the pawl and rotating with the pawl about a second axis.

3. The integrated self-sucking door lock of claim 1, wherein Self-priming components include: The first worm gear is fixedly connected to the output shaft of the self-priming motor; A first double gear is rotatably mounted on the third shaft of the first housing. The first double gear has a first large gear and a first small gear. The first worm and the first large gear form a worm gear connection. A second double gear is rotatably mounted on the fourth shaft of the first housing. The second double gear has a second large gear and a second small gear, and the first small gear and the second large gear form a gear connection. A gear disk rotatably mounted on the fifth shaft of the first housing, the second pinion and the gear disk forming a gear connection; A first push rod rotatably mounted on the gear plate contacts the ratchet, thereby pushing the ratchet to rotate around the first axis to achieve a self-engaging function.

4. The integrated self-closing door lock as described in claim 1, characterized in that, The electro-discharge assembly includes: The second worm gear is fixedly connected to the output shaft of the electric motor; A first gear is rotatably mounted on the second housing, and the first gear and the second worm form a worm gear transmission. The first gear has a first protrusion. A second lever is rotatably mounted on the second housing. The first end of the second lever engages with the first protrusion, and the second end of the second lever engages with the pawl assembly. The pawl assembly is pushed by the first gear and the second lever to achieve the electric release function.

5. The integrated self-closing door lock as described in claim 1, characterized in that, The external release component includes: A first lever is rotatably mounted on the sixth axis of the first housing, and the rotation of the first lever drives the pawl assembly to rotate. An external release rod is rotatably mounted on the seventh axis of the first housing; A movable coupling rod is positioned between the outer release rod and the first lever. When the coupling rod is in the coupling position, the outer release rod drives the first lever to rotate together through the coupling rod, which is the unlocked state. When the coupling rod is in the decoupled position, the outer release rod cannot drive the first lever to rotate through the coupling rod, which is the engaged state.

6. The integrated self-closing door lock as described in claim 5, characterized in that, The central control components include: The third worm gear is fixedly connected to the output shaft of the central control motor; A second gear is rotatably mounted on the second housing. The second gear and the third worm form a worm gear transmission. The second gear is provided with a second protrusion. A pull rod is connected at one end to the second protrusion, and the other end of the pull rod is connected to the coupling rod.

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