European-style electric rear lock with autorotation opening function

Abstract

The utility model discloses a European style electric rear lock with a self-rotation opening function, and relates to the technical field of electric locks. The lock comprises a shell, a bearing positioning piece and an internal transmission system, a gear motor and a rechargeable battery are arranged in the shell, the gear motor drives a gear ring to rotate through a multi-stage gear set, and the gear ring fixes a lock cylinder positioning piece to achieve self-rotation opening of a lock cylinder. The transmission efficiency is optimized and the size of the lock is reduced through precise matching of the gear mounting piece and the bearing positioning piece. The circuit board is integrated with a touch switch, and the decorative plate is lightly touched to trigger unlocking. The rechargeable battery and the gear motor are arranged in a separated cavity mode, electromagnetic interference is avoided, and meanwhile the plug key and the spring are in linkage to provide a power-off emergency mechanical unlocking function. A bearing is fixed in a concave position of the bearing positioning piece, and the lock cylinder positioning piece ensures the axial alignment precision through a positioning hole and a lock cylinder mounting cavity. The intelligent electric lock integrates intelligent operation and efficient transmission, and the problems that a traditional electric lock is large in size, depends on an external power source, and is complex in operation are solved.

Description

Technical Field

[0001] This utility model relates to the field of electric rear lock technology, specifically to a European-style electric rear lock with a self-rotating opening function. Background Technology

[0002] European-style back door locks, a common type of mortise lock, typically consist of two core components: the lock body and the lock cylinder. The lock body is usually made of high-strength metals such as stainless steel or alloys, and contains mechanical structures such as a bolt and clutch to enable the lock's opening, closing, and locking functions. The lock cylinder, as the core component, has a cylindrical design and an internal system of pins of varying lengths. When the correct key is inserted, the pins are pushed up to a predetermined height, causing the lock cylinder to rotate and unlock. While these traditional mechanical locks offer high durability and resistance to vandalism, their reliance on physical keys has significant drawbacks: firstly, users must carry the key, which is prone to loss or forgetting, resulting in insufficient convenience; secondly, traditional locks lack intelligent features and cannot be effectively integrated with electronic security systems, failing to meet the needs of modern smart homes or commercial scenarios.

[0003] In recent years, electric lock technology has been gradually applied to the door lock field, replacing manual operation with motor drive and improving ease of use. However, existing electric locks still have many technical bottlenecks: First, the transmission structure of existing electric locks is complex, and the gear set layout is unreasonable, resulting in large size and high installation and maintenance costs; second, although some electric locks can achieve automatic unlocking, they lack a self-rotating opening function, still requiring users to apply external force to complete the rotation action, and the user experience still needs to be optimized. In addition, the connection method between the lock cylinder and the drive mechanism in existing technologies often suffers from inaccurate positioning and low transmission efficiency, affecting the reliability and service life of the lock.

[0004] Therefore, there is an urgent need for a European-style electric rear lock that can combine intelligent and efficient transmission structure to solve the problems of inconvenient operation and complex structure in the existing technology. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a European-style electric rear lock with a self-rotating opening function, which combines intelligent and efficient transmission structure.

[0006] This utility model also provides a European-style electric rear lock with a self-rotating opening function, including a housing and a bearing positioning component connected together. A bearing is installed inside the bearing positioning component, and a gear ring is installed inside the bearing. The gear ring has internal teeth, and a third gear that moves along the internal teeth is located inside the internal teeth. A reduction motor is installed inside the housing, and the reduction motor is connected to a first gear. An upper gear mounting component and a lower gear mounting component are respectively provided above and below the first gear. The upper gear mounting component is provided with a second gear and a fourth gear. The first gear meshes with the second gear and the fourth gear respectively. A lock cylinder positioning component is fixed on the upper surface of the gear ring. A lock cylinder mounting cavity is provided in the middle of the lock cylinder positioning component. A positioning hole is provided on the outer surface of the lock cylinder positioning component, and the positioning hole is also connected to the lock cylinder mounting cavity. The lock cylinder positioning component also includes a circuit board, which is electrically connected to the reduction motor.

[0007] Specifically, the housing is provided with a partition, which divides the housing into two mounting cavities. The geared motor is placed in one of the mounting cavities, and the rechargeable battery is placed in the other mounting cavity.

[0008] Specifically, a light strip is held between the outer shell and the bearing positioning component.

[0009] Specifically, the bearing positioning component has a recess, and the outer surface of the bearing is placed in the recess.

[0010] Furthermore, one end of the outer shell is provided with a decorative panel, and the back of the outer decorative panel is provided with a circuit board. The circuit board is provided with a touch switch, and the activation end of the touch switch rests against the back of the decorative panel.

[0011] Furthermore, the geared motor is also equipped with a motor mount, which is installed on the inner top surface of the housing.

[0012] Specifically, the front surface of the toothed ring is provided with a boss, and the boss is connected to the lock cylinder positioning component by a first screw.

[0013] Specifically, the separator has a partition cavity, the partition cavity is provided with a spring, the spring is connected to a key, and the key is located at the center of the top surface of the outer shell.

[0014] Furthermore, the key is also equipped with a connecting shaft, one end of which passes through the center of the bearing positioning member 2 and extends to the outside of the bearing positioning member.

[0015] Furthermore, the third gear is also provided with an external shaft assembly, which is mounted on the top surface of the housing.

[0016] The beneficial effects of this utility model are as follows.

[0017] 1. The lock cylinder's self-rotating opening function is achieved through a gear transmission system driven by a geared motor, eliminating the need for manual key rotation or external force application, making operation more convenient. The collaborative design of the circuit board and touch switch supports intelligent triggering; for example, the unlocking process can be initiated by lightly touching the decorative panel, enhancing the user experience. It also seamlessly integrates with smart home systems, expanding remote control or security linkage functions, thus improving both intelligence and ease of operation.

[0018] II. The gear set adopts a multi-stage meshing design (linkage between the first, second, and fourth gears and the internal teeth of the gear ring), effectively transmitting motor torque and optimizing transmission efficiency, ensuring smooth and reliable lock cylinder rotation. The precise fit between the upper gear mounting component and the bearing positioning component further reduces the overall size of the lock, facilitating installation and saving space. High-efficiency transmission and compact structure.

[0019] Third, the built-in rechargeable battery and geared motor are separated by a partition, which avoids electromagnetic interference and extends battery life. The spring-connected key structure can be mechanically pressed to unlock in the event of a power outage, providing dual protection and significantly enhancing the reliability and emergency handling capabilities of the lock, thus ensuring both power continuity and emergency protection.

[0020] IV. The bearing positioning component has a recessed area to fix the outer ring of the bearing. Combined with the positioning hole on the lock cylinder positioning component and the lock cylinder mounting cavity, this ensures the axial alignment accuracy between the lock cylinder and the transmission components, reducing mechanical wear. The fit design between the outer shaft kit and the connecting shaft further enhances the stability of the transmission chain, extends its service life, and provides precise positioning and enhanced stability.

[0021] Fifth, the light strip clamped between the housing and the bearing positioning component provides operation indication in low-light environments, enhancing user-friendliness. It also enables keyless operation via a touch switch, balancing aesthetics and practicality, achieving functional integration and user-friendliness. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 yes Figure 1 Another structural diagram from another angle.

[0025] Figure 3 This is a schematic diagram of the lock cylinder positioning component of this utility model.

[0026] Figure 4 This is a cross-sectional structural diagram of the lock cylinder positioning component of this utility model.

[0027] Figure 5 This is a schematic diagram of the disassembly lock cylinder positioning component of this utility model.

[0028] Figure 6 yes Figure 1 The second embodiment is shown in the exploded structural diagram.

[0029] Figure 7 yes Figure 1 The first decomposition structure diagram.

[0030] Figure 8 yes Figure 1 The second decomposition structure diagram.

[0031] Figure 9 yes Figure 1 A schematic diagram of the third decomposition structure.

[0032] Figure 10 It is a diagram showing the connection relationship between the gear ring, the geared motor, the motor base, the first gear, the second gear, the upper gear mounting component, the lower gear mounting component, and the third gear.

[0033] Figure 11 This is a schematic diagram showing the connection structure of the geared motor, motor base, first gear, second gear, upper gear mounting component, lower gear mounting component, and third gear.

[0034] Figure 12 It is a schematic diagram of the structure in which the outer shell, the first gear, the second gear, the upper gear mounting component, the lower gear mounting component, the third gear, the lower gear mounting component, and the fourth gear are connected.

[0035] As shown in the attached diagram, the components are labeled as follows: outer shell 1, separator 101, inner cavity 102, lock groove 103, bearing positioning component 2, recess 201, light strip 3, decorative panel 4, circuit board 5, touch switch 501, geared motor 6, motor base 601, first gear 602, second gear 603, upper gear mounting component 604, third gear 605, lower gear mounting component 606, fourth gear 607, rechargeable battery 7, spring 8, key 9, gear ring 10, internal gear 1001, boss 1002, connecting shaft 11, bearing 12, outer shaft kit 13, lock cylinder positioning component 14, first screw 1401, positioning hole 1402, lock cylinder mounting cavity 1403. Detailed Implementation

[0036] 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 are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] The following is for reference. Figures 1 to 12 According to an embodiment of the present invention, a European-style electric rear lock with a self-rotating opening function includes a housing 1 and a bearing positioning component 2. The housing 1 and the bearing positioning component 2 are connected. A bearing 12 is installed inside the bearing positioning component 2, and a gear ring 10 is installed inside the bearing 12. The gear ring 10 has internal teeth 1001, and a third gear 605 that moves along the internal teeth 1001 is provided inside the internal teeth 1001. A reduction motor 6 is provided inside the housing 1, and the reduction motor 6 is connected to a first gear 602. Upper gear mounting components 6 are respectively provided above and below the first gear 602. The upper gear mounting component 604 is provided with a second gear 603 and a fourth gear 607 respectively. The first gear 602 meshes with the second gear 603 and the fourth gear 607 respectively. A lock cylinder positioning component 14 is fixed on the upper surface of the gear ring 10. A lock cylinder mounting cavity 1403 is provided in the middle of the lock cylinder positioning component 14. A positioning hole 1402 is provided on the outer surface of the lock cylinder positioning component 14. The positioning hole 1402 is also connected to the lock cylinder mounting cavity 1403. The component also includes a circuit board 5, which is electrically connected to the geared motor 6.

[0038] The output shaft of the geared motor 6 is equipped with a first gear 602. An upper gear mounting component 604 and a lower gear mounting component 606 are respectively located above and below the first gear 602. A second gear 603 and a fourth gear 607 are movably mounted between the upper gear mounting component 604 and the lower gear mounting component 606. These components are movably positioned within the inner cavity of the outer casing 1 and can swing at a certain angle. The upper gear mounting component 604 and the lower gear mounting component 606 can swing synchronously to the left or to the right, allowing one of the second gear 603 or the fourth gear 607 to mesh with the third gear 605, thus forming a driving state. The first gear 602 can simultaneously drive the second gear 603 and the fourth gear 607. The first gear 602 is also located between the upper gear mounting part 604 and the lower gear mounting part 606. The shaft of the geared motor 6 passes through the first gear 601 and is fixedly connected to the first gear 601. The shaft passes through the upper gear mounting part 604, which provides a through hole. The shaft passes through the through hole and can rotate within the through hole without affecting the left and right swing of the upper gear mounting part 604 and the lower gear mounting part 606. There is also a through hole in the middle of the lower gear mounting part 606, which allows the first gear 602 to pass through the through hole during the initial installation without affecting the rotation of the first gear 602 and the shaft.

[0039] The outer casing 1 and the bearing positioning component 2 are clamped between the front and rear of the bearing 12, which restricts the forward and backward displacement of the bearing 12. The bearing 12 is designed so that when the outer casing 1 and the bearing positioning component 2 rotate, they do not act on the gear ring 10. The gear ring 10 and the lock cylinder positioning component 14 are in a fixed state. The lock cylinder positioning component 14 has a lock cylinder mounting cavity 1403 in the middle for installing a standard European lock cylinder. The outer surface of the lock cylinder positioning component 14 has a positioning hole 1402, which communicates with the lock cylinder mounting cavity 1403. The lock cylinder is circumferentially fixed in the lock cylinder mounting cavity 1403 by a positioning pin, so that the lock cylinder positioning component 14 is fixed to the outer surface of the lock cylinder.

[0040] When the geared motor 6 starts rotating in the forward direction, the geared motor 6 drives the first gear 602 to rotate, causing the upper gear mounting part 604 and the lower gear mounting part 606 to swing to the left together, so that the second gear 603 and the third gear 605 mesh together. The power is transmitted to the gear ring 10 through the third gear 605, and the third gear 605 moves clockwise along the inner teeth 1001 of the gear ring 10, ultimately driving the entire housing 1 and the bearing positioning part 2 to rotate together.

[0041] When the geared motor 6 starts in reverse, the geared motor 6 drives the first gear 602 to rotate, causing the upper gear mounting part 604 and the lower gear mounting part 606 to swing to the right together, so that the fourth gear 607 and the third gear 605 mesh together. The power is transmitted to the gear ring 10 through the third gear 605, and the third gear 605 moves counterclockwise along the inner teeth 1001 of the gear ring 10, ultimately driving the entire housing 1 and the bearing positioning part 2 to rotate counterclockwise together.

[0042] The outer casing 1 of this structure has a partition 101 inside, which divides the casing into two mounting cavities. The geared motor 6 is placed in one of the mounting cavities, and the rechargeable battery 7 is placed in the other mounting cavity. The outer casing 1 is made of high-strength aluminum alloy and has the partition 101 inside.

[0043] The structure includes a light strip 3 sandwiched between the outer casing 1 and the bearing positioning component 2. The light strip 3 is an LED light strip and is electrically connected to the circuit board 5. When the door lock is open, the light strip 3 is illuminated under the control of the circuit board 5 to indicate that it is in working condition.

[0044] The bearing positioning component 2 of this structure has a recess 201, and the outer surface of the bearing 12 is placed in the recess 201. The bearing positioning component 2 has a recess 201 machined in it, and the outer ring of the bearing 12 is embedded in the recess 201 and fixed by an interference fit. The gear ring 10 meshes with the third gear 605 through its internal teeth 1001, and the bearing 12 moves radially along the inner ring of the gear ring 10. The front surface of the gear ring 10 has a boss 1002, and the lock cylinder positioning component 14 is fixed to the boss 1002 by the first screw 1401 to ensure that the lock cylinder positioning component 14 and the gear ring 10 are fixed synchronously.

[0045] The outer casing 1 of this structure has a decorative panel 4 at one end, and a circuit board 5 is provided on the back of the outer decorative panel 4. The circuit board 5 has a touch switch 501, and the activation end of the touch switch 501 is abutted against the back of the decorative panel 4. The integration of the circuit board 5 and the touch switch 501 is as follows: the decorative panel 4 is fixed to the end of the outer casing 1, and the circuit board 5 is mounted on its back. The circuit board 5 integrates a microcontroller, a wireless communication module (such as Bluetooth or Wi-Fi), and the touch switch 501. The activation end of the touch switch 501 is in close contact with the back of the decorative panel 4. When the user lightly touches the decorative panel 4, the touch signal triggers the circuit board 5 to control the start of the geared motor 6. The rechargeable battery 7 is connected to the circuit board 5 via wires. The circuit board 5 has a built-in power management module that supports low battery alarm and emergency mechanical unlocking functions.

[0046] The geared motor 6 in this structure also includes a motor mount 601, which is installed on the inner top surface of the housing 1. The motor mount 601 is located at the top of the housing 1, and the geared motor 6 is fixed to the motor mount 601 with bolts, ensuring that the motor axis is perpendicular to the inner top surface of the housing 1. The bearing positioning component 2 is fixedly connected to the housing 1 with screws, and a light strip 3 is held between them. The power supply line of the light strip 3 is connected to the circuit board 5 for operation indication in low-light environments. Additionally, the surface of the decorative panel 4 has a matte finish. The color of the light strip 3 can be switched via programming on the circuit board 5 (e.g., green indicates the unlocked state, and red indicates the locked state).

[0047] The toothed ring 10 of this structure has a boss 1002 on its front surface. The boss 1002 is connected to the lock cylinder positioning member 14 by a first screw 1401, which serves to fix the boss 1002 to the lock cylinder positioning member 14.

[0048] like Figure 12 As shown, the separator 101 of this structure has a separating inner cavity 102, and the separating inner cavity 102 is equipped with a spring 8. Figure 6 In the first embodiment of the lock cylinder connection shown, the spring 8 is connected to a key 9, which is located at the center of the top surface of the outer casing 1. The key 9 is connected to the locking block of the lock cylinder, that is, the locking block is placed on the key 9. When the entire outer casing 1 rotates, it drives the lock cylinder to open or close.

[0049] When the geared motor 6 performs power separation, the speed of the first gear 602 driven by the geared motor 6 drops to the minimum, so that the upper gear mounting part 604 and the lower gear mounting part 606 are in a horizontal state, and the fourth gear 607 and the second gear 603 are separated from the third gear 605 respectively. At this time, the user can twist the outer shell 1 to drive the key 9 and the lock cylinder's insert block to rotate together, thereby opening or closing the lock cylinder.

[0050] like Figure 5 As shown, in the second embodiment of the lock cylinder connection: the key 9 in this structure is also equipped with a connecting shaft 11, one end of which passes through the center of the bearing positioning member 2 and extends to the outside of the bearing positioning member 2. Under normal conditions, the key 9 is held in place by the elastic force of the spring 8, allowing the key 9 to maintain effective connection with the locking block on the lock cylinder. In case of emergency unlocking, the stroke of the key 9 is 5mm, and the required pressing force is ≤10N, ensuring convenient operation. When rotating the outer casing 1, the locking block on the lock cylinder can be quickly placed on the key 9.

[0051] Specifically, when the geared motor 6 rotates forward to lock, the second gear 603 meshes with the third gear 605, thereby driving the gear ring 10 to rotate through the first gear 602, the second gear 603, and the third gear 605. After rotating to the correct position, the geared motor 6 slightly reverses, and the second gear 603 or the fourth gear 607 disengages from the third gear 605. When unlocking, the geared motor 6 continues to reverse, and the fourth gear 607 meshes with the third gear 605, thereby driving the gear ring 10 to reverse. After reaching the correct position, the geared motor 6 rotates forward, thus disengaging the fourth gear 607 from the third gear 605, so that manual twisting 1 is not subject to force and can be easily rotated.

[0052] Second feature: The outer casing 1 has a locking groove 103 (as shown below). Figure 6 As shown, the key is used to hold the key. The key 9 is pushed outward by a spring to ensure that the key is inserted into the lock cylinder. Both the connecting shaft 11 and the key 9 are non-circular irregular surfaces (as shown in the figure, the connecting shaft 11 and the key 9 are hexagonal). When the connecting shaft 11 is inserted into the outer shell 1, the spring 8 is compressed, the key 9 retracts into the partition cavity 102, and the connecting shaft 11 also enters the hexagonal groove on the end face of the outer shell 1. The connecting shaft 11 forms a fixed relationship in the direction of rotation. The connecting shaft 11 has special grooves (such as square holes, flat grooves, etc.) to connect the irregular rod of the lock cylinder to achieve rotation.

[0053] The third gear 605 in this structure is further provided with an external shaft sleeve 13, which is mounted on the top surface of the housing 1. The external shaft sleeve 13 is fixed to the top surface of the housing 1 by screws, which protects and restricts the position of the third gear 605, and can also mesh with the internal teeth 1001 of the gear ring 10. One end of the third gear 605 extends through the end face of the housing 1 to the inner cavity of the housing 1, and the third gear 605 meshes with the second gear 603 or the fourth gear 607 installed inside the housing 1. In addition, the axial direction of the third gear 605 is restricted by the external shaft sleeve 13, and its radial direction is restricted by the upper gear mounting member 604 and the lower gear mounting member 606, which together restrict the position of the second gear 603, the fourth gear 607, and ensure that the gear meshing clearance is ≤0.1mm, so as to effectively transmit power.

[0054] A silicone sealing ring is provided at the joint between the housing 1 and the bearing positioning component 2, achieving an IP54 protection rating. The surface of the circuit board 5 is coated with three layers of waterproof paint to prevent short circuits caused by humid environments.

[0055] The assembly process is as follows: the geared motor 6 is installed onto the motor base 601 and the first gear 602 is fixed.

[0056] Install the gear mounting piece 604, the second gear 603, the fourth gear 607, and the third gear 605 in sequence, and adjust the meshing clearance; press the bearing 12 into the recess 201 of the bearing positioning piece 2, install the gear ring 10 and fix the bearing 12 inside; install the rechargeable battery 7 and the circuit board 5 and connect the wires; connect the outer shell 1 and the bearing positioning piece 2 with screws, clamp the light strip 3 between the outer shell 1 and the bearing positioning piece 2, insert the key 9 and test the reset function of the spring 8; install the other end of the outer shell 1, and finally install the decorative plate 4 on the other end of the outer shell 1, and perform power-on testing and program calibration.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A European-style electric rear lock with a self-rotating opening function, comprising a housing (1) and a bearing positioning component (2), wherein the housing (1) and the bearing positioning component (2) are connected, characterized in that, A bearing (12) is installed inside the bearing positioning component (2), a gear ring (10) is installed inside the bearing (12), an internal gear (1001) is provided inside the gear ring (10), and a third gear (605) that moves along the internal gear (1001) is provided inside the internal gear (1001). A reduction motor (6) is provided inside the housing (1), and a first gear (602) is connected to the reduction motor (6). An upper gear mounting component (604) and a lower gear mounting component (606) are respectively provided above and below the first gear (602). The upper gear mounting component (604) is respectively provided with a second gear mounting component (606). The gear (603) and the fourth gear (607) are respectively meshed with the second gear (603) and the fourth gear (607). The upper surface of the gear ring (10) is fixed with a lock cylinder positioning component (14). The lock cylinder positioning component (14) has a lock cylinder mounting cavity (1403) in the middle position. The outer surface of the lock cylinder positioning component (14) has a positioning hole (1402). The positioning hole (1402) is also connected to the lock cylinder mounting cavity (1403). The device also includes a circuit board (5). The circuit board (5) is electrically connected to the geared motor (6).

2. A European-style electric rear lock with self-rotating opening function according to claim 1, characterized in that, The housing (1) is provided with a partition (101) that divides into two mounting cavities. The geared motor (6) is placed in one of the mounting cavities, and a rechargeable battery (7) is placed in the other mounting cavity.

3. A European-style electric rear lock with a self-rotating opening function according to claim 1, characterized in that, The light strip (3) is held between the outer shell (1) and the bearing positioning member (2).

4. A European-style electric rear lock with a self-rotating opening function according to claim 1, characterized in that, The bearing positioning component (2) has a recess (201) inside, and the outer surface of the bearing (12) is placed at the recess (201).

5. A European-style electric rear lock with self-rotating opening function according to claim 1, characterized in that, One end of the outer casing (1) is provided with a decorative panel (4), and the back of the decorative panel (4) is provided with a circuit board (5). The circuit board (5) is provided with a touch switch (501), and the start end of the touch switch (501) is against the back of the decorative panel (4).

6. A European-style electric rear lock with a self-rotating opening function according to claim 1, characterized in that, The geared motor (6) is also provided with a motor mount (601), which is mounted on the inner top surface of the housing (1).

7. A European-style electric rear lock with a self-rotating opening function according to claim 1, characterized in that, The front surface of the toothed ring (10) is provided with a boss (1002), and the boss (1002) is connected to the lock cylinder positioning member (14) by a first screw (1401).

8. A European-style electric rear lock with a self-rotating opening function according to claim 2, characterized in that, The separator (101) is provided with a partition cavity (102), and the partition cavity is provided with a spring (8). The spring (8) is connected to a key (9), and the key (9) is located at the center of the top surface of the outer shell (1).

9. A European-style electric rear lock with a self-rotating opening function according to claim 8, characterized in that, The key (9) is also equipped with a connecting shaft (11), one end of which passes through the center of the bearing positioning member (2) and extends to the outside of the bearing positioning member (2).

10. A European-style electric rear lock with a self-rotating opening function according to claim 1, characterized in that, The third gear (605) is also provided with an external shaft assembly (13), which is mounted on the top surface of the housing (1).

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