An electrically controlled protective vehicle door lock

Abstract

The present invention discloses an electrically controlled protective vehicle door lock, comprising a main lock and a plurality of sub-locks, the number of which can be increased according to actual needs. A solution in which a DC motor is built into the lock body is adopted, and the lock body structure is more compact than existing products, and is convenient for arrangement and installation. The transmission structure is simple, the energy loss is small, and the motor power is lower. The main lock is provided with a position sensor, and the sub-locks are synchronously unlocked and locked according to the status of the main lock. When in use, the driver can unlock the main driver's side door lock switch, and the electronic control system controls the other sub-locks to be unlocked synchronously. After the vehicle is put into storage after use, the driver locks the vehicle outside the vehicle, and the electronic control system controls the other sub-locks to be locked synchronously, which greatly improves the efficiency of existing door locks. At the same time, the reliability and service life of the product are improved due to its simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile door locks, and in particular to an electrically controlled protective automobile door lock. Background Art

[0002] Due to reliability and security requirements, existing protective military vehicles are equipped with standard mechanical door locks. All doors require a key to unlock, forcing personnel to unlock each door individually with a key before boarding. This is time-consuming and labor-intensive, and it also impacts the operational efficiency of specialized vehicles. Currently available electronically controlled vehicle door locks fail to meet the reliability and security requirements of military use, and exhibit a high failure rate. Therefore, it is necessary to develop an electrically controlled protective vehicle door lock to address these issues. Summary of the Invention

[0003] The purpose of the present invention is to address the shortcomings of the existing technology and provide an electrically controlled protective vehicle door lock to solve the problem that the existing vehicle door lock cannot improve the efficiency of people getting on and off the vehicle while ensuring the protection requirements.

[0004] The present invention provides an electrically controlled protective vehicle door lock, comprising: a main lock body, a control system, a connecting wiring harness and several auxiliary lock bodies; the main lock body and the auxiliary lock bodies are respectively connected to the control system via a connecting wiring harness, and the control system is connected to a power supply; the main lock body comprises: a lock tongue, a position sensor, a card plate, a card plate guide shaft, a DC motor, a torsion spring, a lock core and a turntable; the card plate is slidably connected to the bottom of the position sensor via the card plate guide shaft, and the card plate is connected to a positioning column, and the positioning column extends between the left limit spring piece and the right limit spring piece of the position sensor; a DC motor is provided below the card plate, and the DC motor is transmission-connected to the turntable, and a lock core is provided on the turntable, and the lock core is transmission-connected to the lock tongue; the main lock body and the auxiliary lock body have the same structure.

[0005] The control system is used to control the DC motor in the secondary lock body to rotate forward when the main lock is unlocked with a key and the positioning column of the main lock body is connected to the left limit spring piece of the position sensor, so that the turntable in the secondary lock body drives the lock core to rotate clockwise to complete the unlocking action; and to control the DC motor in the secondary lock body to rotate reversely when the main lock is unlocked with a key and the positioning column of the main lock body is connected to the right limit spring piece of the position sensor, so that the turntable in the secondary lock body drives the lock core to rotate counterclockwise to complete the locking action.

[0006] Furthermore, the main lock body also includes: a lock head, a spring, a lock tongue link, a link guide block, a link baffle, a handle and a paddle; the lock head is arranged at one end of the main lock body, and the link guide block is arranged on one side of the lock head; one end of the lock tongue link passes through the lock head and is connected to the lock tongue, and the other end of the lock tongue link passes through the link guide block and is connected to the link baffle, the spring is sleeved on the lock tongue link and contacts the link guide block, the handle is rotatably arranged below one side of the link guide block, and a paddle is provided at one end of the handle, and the paddle extends between the link guide block and the link baffle.

[0007] Furthermore, the main lock body also includes: a torsion spring, which contacts the lock core to limit the lock core. When the turntable in the secondary lock body drives the lock core to rotate clockwise to complete the unlocking action, the torsion spring limits the lock core to the unlocking position; when the turntable in the secondary lock body drives the lock core to rotate counterclockwise to complete the locking action, the torsion spring limits the lock core to the locked position.

[0008] Furthermore, the control system includes: an unlocking switch, a locking switch, a first relay, a second relay, a time relay, a normally closed contact, a first contact, a second contact, a third contact, a fourth contact, a fifth contact, a sixth contact, a seventh contact, and an eighth contact;

[0009] The unlocking switch is connected in parallel with the fourth contact, and then connected in series with the seventh contact and the first relay to form a first circuit module; the locking switch is connected in parallel with the eighth contact, and then connected in series with the third contact and the second relay to form a second circuit module; the first circuit module is connected in parallel with the second circuit module, and then connected in series with the time relay and the normally closed contact to the positive and negative poles of the power supply; the first contact is connected to the positive pole of the power supply, the second contact is connected to the negative pole of the power supply, and the fifth contact and the sixth contact are respectively connected between the positive pole and the negative pole of the power supply; the DC motors of the main lock body and the auxiliary lock body are connected between the positive pole and the negative pole of the power supply, and the positive pole of the power supply is provided with a fuse.

[0010] Furthermore, the outer shells of the main lock body and the auxiliary lock body are made of bulletproof steel plates that are bent and welded.

[0011] The present invention has the following beneficial effects: The present invention provides an electrically controlled protective vehicle door lock, comprising a main lock and multiple sub-locks, the number of which can be increased according to actual needs. A solution using a built-in DC motor in the lock body makes the lock body structure more compact than existing products, making it easier to arrange and install. The transmission structure is simple, with low energy loss and lower motor power. The main lock is equipped with a position sensor, and the sub-locks are synchronously unlocked and locked according to the status of the main lock. During use, the driver can unlock the main driver's side door lock switch, and the electronic control system controls the other sub-locks to unlock synchronously. After the vehicle is put into storage after use, the driver locks the vehicle from outside the vehicle, and the electronic control system controls the other sub-locks to lock synchronously, which greatly improves the efficiency of existing door locks. At the same time, the simple structure also improves the reliability and service life of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a structural diagram of an electrically controlled protective vehicle door lock system;

[0014] Figure 2 This is a front view of the lock body of an electrically controlled protective vehicle door lock;

[0015] Figure 3 This is a side view of the lock body of an electrically controlled protective vehicle door lock;

[0016] Figure 4 This is a diagram showing the internal structure of an electrically controlled protective vehicle door lock body;

[0017] Figure 5 This is an electrical schematic diagram of an electric control system for an electrically controlled protective vehicle door lock;

[0018] Figure 6 It is a schematic diagram of the structure of the card plate and the positioning column;

[0019] Figure 7 This is a schematic diagram of the lock cylinder unlocking structure change;

[0020] Figure 8 The position diagram of the torsion spring in the unlocked state;

[0021] Figure 9 This is a schematic diagram of the lock cylinder locking structure changes;

[0022] Figure 10 Diagram of the torsion spring position when locked.

[0023] Illustration: 1-main lock body; 2-control system; 3-connecting harness; 4-secondary lock body; 5-lock tongue; 6-lock head; 7-spring; 8-lock tongue connecting rod; 9-position sensor; 10-connecting rod guide block; 11-connecting rod baffle; 12-handle; 13-paddle; 14-cage; 15-cage guide shaft; 16-positioning column; 17-DC motor; 18-torsion spring; 19-lock cylinder; 20-turntable; 121-limiting structure; 141-hollow frame; 1 91-lower protrusion; SB1-unlocking switch; SB2-locking switch; KM1-first relay; KM2-second relay; KT-time relay; KT1-normally closed contact; KM1-1-first contact; KM1-2-second contact; KM1-3-third contact; KM1-4-fourth contact; KM2-1-fifth contact; KM2-2-sixth contact; KM2-3-seventh contact; KM2-4-eighth contact; FU1-fuse. DETAILED DESCRIPTION

[0024] It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0025] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0026] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of this application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for clarity, the thickness of layers and regions is exaggerated, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0027] See also Figures 1 to 10 An embodiment of the present invention provides an electrically controlled protective vehicle door lock, comprising: a primary lock body 1, a control system 2, a connecting harness 3, multiple secondary lock bodies 4, a lock tongue 5, a lock head 6, a spring 7, a lock tongue connecting rod 8, a position sensor 9, a connecting rod guide block 10, a connecting rod baffle 11, a handle 12, a paddle 13, a clamping plate 14, a clamping plate guide shaft 15, a positioning column 16, a DC motor 17, a torsion spring 18, a lock cylinder 19, and a rotary disk 20. The primary lock body 1 and the secondary lock body 4 are respectively connected to the control system 2 via the connecting harness 3. The control system 2 is connected to a power supply, which is a 24V DC vehicle battery.

[0028] Among them, the lock head 6 is set at one end of the main lock body 1, and the connecting rod guide block 10 is set on one side of the lock head 6; one end of the lock tongue connecting rod 8 passes through the lock head 6 and is connected to the lock tongue 5, and the other end of the lock tongue connecting rod 8 passes through the connecting rod guide block 10 and is connected to the connecting rod baffle 11. The spring 7 is sleeved on the lock tongue connecting rod 8 and contacts the connecting rod guide block 10. The handle 12 is rotatably set below one side of the connecting rod guide block 10. A paddle 13 is set at one end of the handle 12, and the paddle 13 extends between the connecting rod guide block 10 and the connecting rod baffle 11. When the handle 12 is turned clockwise, the connecting rod baffle 11 can be driven to the right by the paddle 13, thereby pulling the lock tongue connecting rod 8 to the right, causing the spring 7 to be compressed and the lock tongue 5 to retract into the lock head 6.

[0029] The card plate 14 is slidably connected to the lower part of the position sensor 9 through the card plate guide shaft 15. The positioning column 16 is welded on the card plate 14, and the two are integrated. Figure 6 As shown, a hollow frame 141 is provided within the card plate 14, and a positioning post 16 extends between the left and right stopper springs of the position sensor 9. A DC motor 17 is located below the card plate 14. The output end of the DC motor 17 is connected to the turntable 20 via a bevel gear transmission structure, driving the turntable 20 to rotate. A lock cylinder 19 is mounted on the turntable 20, and a lower protrusion 191 is located below the lock cylinder 19. The lower protrusion 191 extends into the hollow frame 141 to achieve linkage between the lock cylinder 19 and the card plate 14. The rotating shaft of the handle 12 is provided with a stopper structure 121 that cooperates with the card plate 14.

[0030] The torsion spring 18 is used to limit the lock cylinder 19. When the rotary disk 20 in the secondary lock body 4 drives the lock cylinder 19 to rotate clockwise to complete the unlocking action, the torsion spring 18 restrains the lock cylinder 19 in the unlocked position. When the rotary disk 20 in the secondary lock body 4 drives the lock cylinder 19 to rotate counterclockwise to complete the locking action, the torsion spring 18 restrains the lock cylinder 19 in the locked position. The main lock body 1 and the secondary lock body 4 have the same structure. The outer shell of the main lock body 1 and the secondary lock body 4 is bent and welded from bulletproof steel plates. The internal structure has also been strengthened according to the actual needs of military vehicles, which can meet the special requirements of protective military vehicles for door lock strength.

[0031] The control system 2 includes: an unlocking switch SB1, a locking switch SB2, a first relay KM1, a second relay KM2, a time relay KT, a normally closed contact KT1, a first contact KM1-1, a second contact KM1-2, a third contact KM1-3, a fourth contact KM1-4, a fifth contact KM2-1, a sixth contact KM2-2, a seventh contact KM2-3 and an eighth contact KM2-4.

[0032] The unlocking switch SB1 is connected in parallel with the fourth contact KM1-4 and then connected in series with the seventh contact KM2-3 and the first relay KM1 to form a first circuit module; the locking switch SB2 is connected in parallel with the eighth contact KM2-4 and then connected in series with the third contact KM1-3 and the second relay KM2 to form a second circuit module; the first circuit module is connected in parallel with the second circuit module and then connected in series with the time relay KT and the normally closed contact KT1 and then connected to the positive and negative poles of the power supply; the first contact KM1-1 is connected to the positive pole of the power supply, the second contact KM1-2 is connected to the negative pole of the power supply, the fifth contact KM2-1 and the sixth contact KM2-2 are respectively connected between the positive and negative poles of the power supply; the DC motor 17 of the main lock body 1 and the auxiliary lock body 4 is connected between the positive and negative poles of the power supply, and the positive pole of the power supply is provided with a fuse FU1.

[0033] The main lock body 1 of the present invention can be installed in the main driver's door, the secondary lock body 4 is installed in the co-driver and rear doors, the control system 3 is installed on the reserved bracket in the instrument panel, and the connecting harness 3 is respectively connected to the main lock body 1, the secondary lock body 4, the control system 3 and the power supply. After the system is installed, it can be powered on for debugging and use.

[0034] The working principle of the electrically controlled protective vehicle door lock of the present invention is as follows:

[0035] Unlocking and opening process: the main lock body 1 and the auxiliary lock body 2 are in the locked state. At this time, the main lock is unlocked with the key, and the lock cylinder 19 rotates clockwise. The lower protrusion 191 on the lock cylinder 19 drives the card plate 14 to move to the left. The positioning pin 16 moves synchronously with the card plate 14 from the right to the left and contacts the left limit spring of the position sensor 9. The card plate 14 is separated from the limit structure 121. At this time, the paddle 13 is released from the restriction, and the lock tongue 5 can be retracted by applying a downward force to the handle 12. Figure 7 As shown, at this time Figure 5 The unlocking switch SB1 is turned on, the coil of the first relay KM1 and the coil of the time relay KT are energized, the first contact KM1-1 and the second contact KM1-2 are closed, the DC motor 17 in the auxiliary lock body 2 rotates forward, the turntable 20 drives the lock cylinder 19 to rotate clockwise, and at the same time drives the card plate 14 to move to the left, at this time the paddle 13 is released from the restriction, as shown in FIG. Figure 7 As shown, the unlocking action is completed.

[0036] The upper end of the torsion spring 18 is connected to the lock core 19 and the lower end is fixed to the lock body by a bolt. As the lock core 19 rotates clockwise, the torsion spring 18 is compressed and released. When the lock core 19 is in the unlocked state, the torsion spring 18 is in Figure 8 In the state shown, the torsion spring 18 is in a natural, non-compressed state, which restricts the lock cylinder 19 to the unlocked position, preventing the lock cylinder 19 from being locked accidentally due to vibration. After a preset time, for example, 1.5 seconds, the time relay KT is activated, and the normally closed contact KT1 is disconnected. At this time, the coil of the first relay KM1 loses power, the first contact KM1-1 and the second contact KM1-2 are disconnected, and the DC motor 17 stops rotating to prevent damage to the motor due to prolonged stalling. At this point, the unlocking process of the main lock body 1 and the secondary lock body 2 is completed. Then manually turn the handle 12 downward, and the paddle 13 rotates clockwise synchronously. The connecting rod baffle 11 drives the lock bolt connecting rod 8 and the lock bolt 5 to the right to open the door. The compression spring 7 moves in the opposite direction. After the door is opened, the lock bolt 5 automatically returns to its original position when the handle is released.

[0037] Door closing and locking process: When the door is open, turn the handle 12 downward, the paddle 13 rotates clockwise synchronously, the connecting rod baffle 11 drives the lock bolt connecting rod 8 and the lock bolt 5 to the right, and the compression spring 7 moves in the opposite direction. After closing the door, release the lock bolt 5 and the door is closed. The main lock body 1 and the auxiliary lock body 2 are in the unlocked state. At this time, use the key or lock the main lock inside the car, the lock cylinder 19 rotates counterclockwise, and the lower protrusion 191 on the lock cylinder 19 drives the card plate 14 to move to the right. The positioning pin 16 moves synchronously with the card plate 14 from the left to the right and connects with the right limit spring of the position sensor 9. At this time, the card plate 14 blocks the limit structure 121, and the paddle 13 is restricted, as shown in the figure. Figure 9 As shown, it is impossible to apply downward force to the handle 12 to rotate the handle 12. Figure 5The locking switch SB2 is turned on, the second relay KM2 coil and the time relay KT coil are energized, the fifth contact KM2-1 and the sixth contact KM2-2 are closed, the DC motor 17 in the secondary lock body 2 is reversed, the turntable 20 drives the lock cylinder 19 to rotate counterclockwise, and at the same time drives the card plate 14 to move to the right. At this time, the paddle 13 applies a restriction as shown in FIG. Figure 9 As shown, the locking action is completed.

[0038] The upper end of the torsion spring 18 is connected to the lock core 19 and the lower end is fixed to the lock body by a bolt. As the lock core 19 rotates counterclockwise, the torsion spring 18 is compressed and released. When the lock core 19 is in the locked state, the torsion spring 18 is in Figure 10 In the state shown, torsion spring 18 is in its natural, uncompressed state, restraining lock cylinder 19 in the unlocked position and preventing accidental locking due to vibration. After a preset time, for example, 1.5 seconds, time relay KT activates, opening normally closed contact KT1. This de-energizes the coil of second relay KM2, disconnecting fifth contact KM2-1 and sixth contact KM2-2, and stopping DC motor 17 to prevent damage from prolonged stalling. This completes the locking process for primary lock body 1 and secondary lock body 2.

[0039] In addition, after the vehicle battery is exhausted, the main lock body 1 and the auxiliary lock body 2 can still be manually unlocked and locked using the key. When people are in the car, the main driver can manually turn the lock core knob of the main lock body 1, and can also synchronously unlock and lock the door locks of the entire vehicle. This control system has the self-locking and interlocking functions of the relay to prevent functional failure or DC motor short circuit due to vibration and other reasons when the lock body is unlocked or locked. There are special requirements for protective performance for protective vehicles. The patent of this invention breaks the gap in the field of protective vehicle door locks. The lock body has a simple structure, low failure rate, small size, simple and convenient installation layout.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can, for example, be implemented in an order other than that illustrated or described herein.

[0042] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An electrically controlled protective vehicle door lock, characterized in that: include: A main lock body (1), a control system (2), a connecting wire harness (3), and a plurality of auxiliary lock bodies (4); the main lock body (1) and the auxiliary lock bodies (4) are respectively connected to the control system (2) via the connecting wire harness (3), and the control system (2) is connected to a power source; The main lock body (1) comprises: a lock tongue (5), a position sensor (9), a card plate (14), a card plate guide shaft (15), a DC motor (17), a torsion spring (18), a lock core (19) and a turntable (20); the card plate (14) is slidably connected to the bottom of the position sensor (9) through the card plate guide shaft (15); the card plate (14) is connected to a positioning column (16); the positioning column (16) extends between the left limit spring piece and the right limit spring piece of the position sensor (9); a DC motor (17) is provided below the card plate (14); the DC motor (17) is transmission-connected to the turntable (20); a lock core (19) is provided on the turntable (20); the lock core (19) is transmission-connected to the lock tongue (5); the main lock body (1) and the auxiliary lock body (4) have the same structure; The control system (2) is used to control the DC motor (17) in the secondary lock body (4) to rotate forward when the main lock body (1) is unlocked with a key and the positioning column (16) of the main lock body (1) is connected to the left limit spring of the position sensor (9), so that the turntable (20) in the secondary lock body (4) drives the lock core (19) to rotate clockwise to complete the unlocking action; and, when the main lock body (1) is unlocked with a key and the positioning column (16) of the main lock body (1) is connected to the right limit spring of the position sensor (9), control the DC motor (17) in the secondary lock body (4) to rotate reversely when the positioning column (16) of the main lock body (1) is connected to the right limit spring of the position sensor (9), so that the turntable (20) in the secondary lock body (4) drives the lock core (19) to rotate counterclockwise to complete the locking action; The main lock body (1) further comprises: a lock head (6), a spring (7), a lock tongue connecting rod (8), a connecting rod guide block (10), a connecting rod baffle (11), a handle (12) and a paddle (13); The lock head (6) is arranged at one end of the main lock body (1), and the connecting rod guide block (10) is arranged on one side of the lock head (6); one end of the lock tongue connecting rod (8) passes through the lock head (6) and is connected to the lock tongue (5), and the other end of the lock tongue connecting rod (8) passes through the connecting rod guide block (10) and is connected to the connecting rod baffle (11); the spring (7) is sleeved on the lock tongue connecting rod (8) and contacts the connecting rod guide block (10); the handle (12) is rotatably arranged below one side of the connecting rod guide block (10), and a paddle (13) is provided at one end of the handle (12), and the paddle (13) extends between the connecting rod guide block (10) and the connecting rod baffle (11); The main lock body (1) further comprises: a torsion spring (18), wherein the torsion spring (18) contacts the lock core (19) to limit the lock core (19), and when the rotary disk (20) in the auxiliary lock body (4) drives the lock core (19) to rotate clockwise to complete the unlocking action, the torsion spring (18) limits the lock core (19) to the unlocking position; when the rotary disk (20) in the auxiliary lock body (4) drives the lock core (19) to rotate counterclockwise to complete the locking action, the torsion spring (18) limits the lock core (19) to the locking position.

2. The electrically controlled protective vehicle door lock according to claim 1, characterized in that: The control system includes: an unlocking switch (SB1), a locking switch (SB2), a first relay (KM1), a second relay (KM2), a time relay (KT), a normally closed contact (KT1), a first contact (KM1-1), a second contact (KM1-2), a third contact (KM1-3), a fourth contact (KM1-4), a fifth contact (KM2-1), a sixth contact (KM2-2), a seventh contact (KM2-3), and an eighth contact (KM2-4); The unlocking switch (SB1) is connected in parallel with the fourth contact (KM1-4) and then connected in series with the seventh contact (KM2-3) and the first relay (KM1) to form a first circuit module; the locking switch (SB2) is connected in parallel with the eighth contact (KM2-4) and then connected in series with the third contact (KM1-3) and the second relay (KM2) to form a second circuit module; the first circuit module and the second circuit module are connected in parallel with the time relay (KT) and the normally closed contact (KT1) and then connected to the positive and negative poles of the power supply; the first contact (KM1-1) is connected to the positive pole of the power supply, the second contact (KM1-2) is connected to the negative pole of the power supply, the fifth contact (KM2-1) and the sixth contact (KM2-2) are respectively connected between the positive pole and the negative pole of the power supply; the DC motors (17) of the main lock body (1) and the auxiliary lock body (4) are connected between the positive pole and the negative pole of the power supply, and the positive pole of the power supply is provided with a fuse (FU1).

3. The electrically controlled protective vehicle door lock according to claim 1, characterized in that: The outer shells of the main lock body (1) and the auxiliary lock body (4) are formed by bending and welding bulletproof steel plates.

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