Vehicle door automatic unlocking mechanism and vehicle

Abstract

The invention discloses a vehicle door automatic unlocking mechanism and a vehicle, and belongs to the technical field of vehicles. The anti-theft lock comprises a lock body, a lock tongue, a pulling rope and a driving piece, and a through groove is formed in the lock body; the spring bolt is in sliding connection with the lock body, and a first elastic piece is installed between the spring bolt and the lock body. One end of the traction rope is connected to the spring bolt; the driving part is used for receiving and executing an unlocking command, and the unlocking command comprises the step of driving the traction rope to pull the spring bolt so that the spring bolt can stretch into the lock body. When the collision module detects that the vehicle collides, the collision module sends an unlocking command to the driving piece, the driving piece receives the unlocking command and starts to execute the unlocking command, that is, the traction rope is driven to pull the spring bolt, the spring bolt overcomes the elastic force of the first elastic piece and then stretches into the lock body, and therefore the limitation of the spring bolt on the lock head part can be relieved, and the vehicle door is automatically unlocked; and passengers can rapidly walk out of the vehicle conveniently, rescue of people outside the vehicle can be facilitated, safety is improved, and accidents caused by the fact that the vehicle door cannot be opened in time after collision are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an automatic door unlocking mechanism and a vehicle. Background Art

[0002] The vehicle's door needs to be opened by pushing the handle from the outside or from the inside after being unlocked. However, when the vehicle is involved in a collision, the occupants may become nervous or panic and thus be unable to push the handle in time to open the door and escape. Or, if the door is not unlocked, the outsiders cannot push the handle to open the door to rescue the occupants in the vehicle, which may result in the occupants being unable to receive medical assistance in time, affecting the recovery and survival probability of the injured, thereby increasing the danger to the occupants. Summary of the invention

[0003] The object of the present invention is to provide a vehicle door automatic unlocking mechanism and a vehicle to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] In order to solve the above technical problems, a technical solution is provided: an automatic door unlocking mechanism is applied to a vehicle with a collision module, the collision module is used to detect whether the vehicle has a collision, the automatic door unlocking mechanism comprises: a lock body, which is provided with a through groove; a lock tongue, which is slidably connected to the lock body, and a first elastic member is installed between the lock tongue and the lock body, and the first elastic member provides an elastic force to extend the lock tongue from the through groove to outside the lock body; a traction rope, one end of which is connected to the lock tongue; a driving member, which is connected to the traction rope, and the driving member is configured to drive the traction rope to pull the lock tongue when receiving an unlocking command, so that the lock tongue overcomes the elastic force of the first elastic member and extends into the lock body; when the vehicle collides, the collision module sends the unlocking command to the driving member.

[0005] This technical solution has at least the following beneficial effects: when the collision module detects a vehicle collision, the collision module sends an unlocking command to the driving member, and when the driving member receives the unlocking command, it drives the traction rope to pull the lock tongue, so that the lock tongue overcomes the elastic force of the first elastic member and extends into the lock body, thereby releasing the restriction of the lock tongue on the lock head component and automatically unlocking the door, making it easier for passengers to quickly get out of the car and easier for people outside the car to rescue, thereby improving safety and avoiding accidents caused by the failure to open the door in time after a collision.

[0006] As a further improvement of the above technical solution, a first magnetic attracting member is installed on the locking tongue, and a second magnetic attracting member is installed on the lock body; when the locking tongue extends into the lock body, the first magnetic attracting member and the second magnetic attracting member attract each other. The attracting force between the first magnetic attracting member and the second magnetic attracting member can balance the elastic force of the first elastic member, so that the locking tongue can quickly and stably extend into the lock body. When the handle is normally pulled, the force applied to pull the handle can be reduced, improving comfort and unlocking efficiency. When the locking tongue is pulled by the traction rope to achieve automatic unlocking, the load on the driving member can be reduced, and the unlocking efficiency of the vehicle door is also improved.

[0007] As a further improvement of the above technical solution, the second magnetic attracting member is an electromagnet, a first conductive block is installed on the locking tongue, the lock body is provided with a driving circuit connected in series with the electromagnet, the driving circuit has two contacts, and the first conductive block is used to conduct or disconnect the two contacts; when the locking tongue extends into the lock body to a preset distance, the first conductive block connects the two contacts, making the driving circuit conductive and supplying power to the electromagnet, and the electromagnet attracts the first magnetic attracting member after being energized.

[0008] As a further improvement of the above technical solution, the lock body is provided with a sliding groove for the locking tongue to pass through, both ends of the first conductive block pass through the two sides of the locking tongue respectively, and both of the two contacts are respectively connected with a second conductive block, and the two second conductive blocks are respectively embedded in the opposite side walls of the sliding groove; when the locking tongue extends into the lock body to a preset distance, both ends of the first conductive block respectively contact the two second conductive blocks, making the first conductive block connect the two contacts. By reasonably distributing the positions of the first conductive block and the second conductive block, the overall structure can be simplified, and the overall structure occupies less space.

[0009] As a further improvement of the above technical solution, the lock body is provided with a fixing plate, the sliding groove is opened on the fixing plate, the locking tongue is installed with a limiting block, the first elastic member is a spiral spring with both ends respectively abutted against the limiting block and the fixing plate, and the spiral spring is sleeved on the locking tongue. The overall structure is relatively compact and stable.

[0010] As a further improvement of the above technical solution, the limiting block is provided with a support plate, the first magnetic attracting member and the second magnetic attracting member are respectively installed on the support plate and the fixing plate; the support plate is connected with a pull rope, and one end of the pull rope away from the support plate passes through the fixing plate and is in transmission connection with the handle of the vehicle door. By operating the handle to pull the pull rope, the locking tongue can be pulled to retract into the lock body against the elastic force of the first elastic member, realizing the unlocking of the vehicle door.

[0011] As a further improvement of the above technical solution, the direction along the connection line of the centers of the two second conductive blocks is the linear contact direction. The first conductive block includes a third conductive block and a fourth conductive block that slide relative to each other along the linear contact direction on the lock tongue. The lock tongue is provided with a second elastic member and a third elastic member. The second elastic member provides an elastic force to abut the third conductive block against one of the contacts, and the third elastic member provides an elastic force to abut the fourth conductive block against the other contact.

[0012] As a further improvement of the above technical solution, the driving member includes a motor installed on the lock body. A first winding wheel is installed at the output end of the motor. One end of the traction rope away from the lock tongue is arranged on the first winding wheel. The motor is configured to drive the first winding wheel to rotate and wind the traction rope when receiving the unlocking command, so that the traction rope pulls the lock tongue into the lock body. By pulling the lock tongue in the way of the motor driving the first winding wheel to wind the traction rope, the positions of the motor and the first winding wheel can be flexibly arranged, which is convenient for the distribution of each component.

[0013] As a further improvement of the above technical solution, a guiding inclined surface is provided on the part of the lock tongue extending out of the lock body. The lock tongue can rotate relative to the lock body. A first bevel gear and a second bevel gear are respectively rotatably installed on the lock body. The first bevel gear and the second bevel gear are meshed and connected. The first bevel gear is slidably connected with the lock tongue. A second winding wheel is installed on the second bevel gear. A fourth elastic member is installed on the lock body. The fourth elastic member provides an elastic force for the second winding wheel to reset. The traction rope is connected with a bifurcated rope. One end of the bifurcated rope away from the traction rope is wound on the second winding wheel; when the motor drives the first winding wheel to rotate, the traction rope pulls the bifurcated rope to overcome the elastic force of the fourth elastic member and pulls the second winding wheel to rotate. Under the transmission action of the first bevel gear and the second bevel gear, the lock tongue is driven to rotate. When the car door is closed by an external force, the lock head can abut against the guiding inclined surface and push the lock tongue into the lock body, so that the lock head is locked by the lock tongue. When a vehicle collision occurs, during the process of the driving member pulling the traction rope, the bifurcated rope will also be pulled, so that the lock tongue will turn the guiding inclined surface to the other side direction during the process of extending into the lock body, so that the car door can make the lock head abut against the guiding inclined surface under the pushing condition and push the lock tongue into the lock body, so that the car door can be quickly unlocked and opened.

[0014] The present invention also provides another technical solution: a vehicle, including the above-mentioned door automatic unlocking mechanism and the collision module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 Schematic diagram of the shape and structure of the lock body in the first embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the internal structure of the lock body in the first embodiment of the present invention;

[0018] Figure 3 Schematic diagram of the connection structure between the limiting block and the guide rod in the first embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the connection structure of the support plate in the first embodiment of the present invention;

[0020] Figure 5 Schematic diagram of the structure of the lock tongue in the first embodiment of the present invention;

[0021] Figure 6 Schematic diagram of the distribution of two second conductive blocks in the first embodiment of the present invention;

[0022] Figure 7 Schematic diagram of the internal structure of the lock body in the second embodiment of the present invention;

[0023] Figure 8 Schematic diagram of the sectional structure inside the lock body in the second embodiment of the present invention;

[0024] Figure 9 Schematic diagram of the unlocking state when the lock tongue is pulled by the car door handle in the second embodiment of the present invention;

[0025] Figure 10 Schematic diagram of the transition state during the automatic unlocking process of the lock tongue after a vehicle collision in the second embodiment of the present invention;

[0026] Figure 11 Schematic diagram of the state after the tongue lock is automatically unlocked after a vehicle collision in the second embodiment of the present invention.

[0027] 100, lock body; 101, groove; 102, through groove; 110, second magnetic attraction member; 120, second conductive block; 130, fixing plate; 131, sliding groove; 200, lock tongue; 201, guiding inclined surface; 210, first elastic member; 220, limiting block; 221, support plate; 222, pulling rope; 223, guiding plate; 224, guiding groove; 225, guiding rod; 230, first magnetic attraction member; 240, first conductive block; 241, third conductive block; 242, fourth conductive block; 243, second elastic member; 244, third elastic member; 300, towing rope; 400, motor; 410, first winding wheel; 500, first bevel gear; 510, second bevel gear; 520, second winding wheel; 530, bifurcated rope; 600, first limiting wheel; 610, second limiting wheel. Detailed implementation manners

[0028] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where 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 by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the orientation descriptions, such as upper, lower, front, rear, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0030] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, "greater than", "less than", "exceeding", etc. are understood as not including the present number, and "above", "below", "within", etc. are understood as including the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0032] Embodiment 1:

[0033] The vehicle has a collision module for detecting whether the vehicle has a collision. The collision module can adopt existing technical solutions. The collision module can also adopt a technical solution that determines whether the vehicle has a collision by obtaining the change data of the accelerations in all directions of the vehicle and comparing it with a theoretical change data set. The theoretical change data set is a data set of accelerations in all directions preset after a vehicle collision test and generated based on various collision tests. When the difference between the change data of the accelerations in all directions of the vehicle and the data in the theoretical change data set is less than a preset value, it is considered that the vehicle has a collision.

[0034] Refer to Figures 1-6 , a door automatic unlocking mechanism for automatically unlocking the doors in the vehicle when the vehicle has a collision. Specifically, the door automatic unlocking mechanism includes a lock body 100, a lock tongue 200, a traction rope 300, and a driving member.

[0035] The left side of the lock body 100 is recessed inward to form a groove 101 with a U-shaped cross section, and a through groove 102 is provided on one side below the groove 101, and the through groove 102 communicates with the interior of the lock body 100. A fixing plate 130 is horizontally arranged inside the lock body 100, and a circular slide groove 131 is provided on the fixing plate 130. The cross-sectional shape of the lower end of the lock tongue 200 is adapted to the cross-sectional shape of the slide groove 131, so that the lower end of the lock tongue 200 can be guided and slid in the slide groove 131, and the upper end of the lock tongue 200 is penetrated in the through groove 102. In other embodiments, the slide groove 131 can also be set to a square or other polygonal shape.

[0036] A first elastic member is installed between the lock tongue 200 and the lock body 100, and the first elastic member is a coil spring. A circular ring-shaped stopper 220 is fixed to the middle of the lock tongue 200, and the stopper 220 is arranged around the outer periphery of the lock tongue 200. The coil spring is sleeved on the outer periphery of the lock tongue 200, and one end of the coil spring abuts against the fixing plate 130, and the other end abuts against the stopper 220. Under the elastic force of the coil spring, the upper end of the lock tongue 200 is pushed out of the lock body 100 from the through groove 102, so that the upper end of the lock tongue 200 is kept in the opening position of the groove 101.

[0037] A support plate 221 is fixedly mounted on one side of the limit block 220, and a guide plate 223 is mounted on the support plate 221. A guide groove 224 is provided on the inner side wall of the lock body 100, and the length direction of the guide groove 224 is parallel to the sliding direction of the lock tongue 200. A guide rod 225 is mounted in the guide groove 224, and the length direction of the guide rod 225 is the same as the length direction of the guide groove 224. One end of the guide plate 223 is slidably disposed in the guide groove 224, and the guide rod 225 is penetrated in the guide plate 223, and the guide plate 223 can slide along the length direction of the guide rod 225 and the guide groove 224, thereby improving the sliding stability of the lock tongue 200.

[0038] The support plate 221 is provided with a pull cord 222, and a hole connected to the outside is provided inside the lock body 100. After the end of the pull cord 222 away from the support plate 221 passes through the fixing plate 130, it passes through the hole to the outside of the lock body 100 and is connected to the vehicle door handle. When the vehicle door handle is operated, the pull cord 222 is pulled to move, so that the pull cord 222 pulls the lock tongue 200 to overcome the elastic force of the coil spring and move downward, and the upper end of the lock tongue 200 extends into the interior of the lock body 100, so that the lock head on the vehicle door can enter and exit the groove 101, and the vehicle door is actively unlocked.

[0039] In order to achieve the function of locking the door by pushing the door without operating the door handle, a guiding inclined surface 201 is provided at the upper end of the locking tongue 200 and on one side facing the opening position of the groove 101. When the door is closed without operating the handle, after the lock head of the door abuts against the guiding inclined surface 201, the locking tongue 200 can be pushed to move downward against the elastic force of the spiral spring, so that the lock head enters the groove 101, realizing the locking of the door. In other embodiments, according to the closing direction of the door or the installation posture of the lock body 100, the guiding inclined surface 201 can also face other directions.

[0040] The driving member includes a motor 400 and a first winding wheel 410. The motor 400 is installed inside the lock body 100. The first winding wheel 410 is rotatably installed inside the lock body 100, and the output end of the motor 400 is fixedly connected to the central position of the first winding wheel 410, that is, the motor 400 can drive the first winding wheel 410 to rotate. One end of the traction rope 300 is installed at the bottom end of the locking tongue 200, and the other end is fixed to the outer side wall of the first winding wheel 410.

[0041] The motor 400 is communicatively connected to the collision module. When the collision module detects that the vehicle has collided, it sends an unlocking command to the motor 400. When the motor 400 receives the unlocking command, it starts a preset program to drive the first winding wheel 410 to rotate and wind the traction rope 300. The traction rope 300 pulls the locking tongue 200 to move downward against the elastic force of the spiral spring, so that the upper end of the locking tongue 200 extends into the lock body 100, and the lock head of the door can be disengaged from the groove 101, thus realizing the automatic unlocking of the door after the vehicle collision. After the vehicle has collided, the door can be automatically unlocked, so that the occupants in the car can quickly push open the door and escape, and the outside can also quickly open the door to rescue the internal occupants, enabling the occupants to obtain medical and other rescues in time and reducing the danger to the members.

[0042] It can be understood that the motor 400 includes a control component for controlling the operating parameters. The control component can be integrally arranged inside the motor 400 or arranged inside the lock body 100.

[0043] Further, a first magnetic member 230 is installed on the support plate 221, and a second magnetic member 110 is installed on the fixing plate 130. The second magnetic member 110 is an electromagnet, and the first magnetic member 230 is an iron block or a magnetic block. The lock tongue 200 is installed with a first conductive block 240. The first conductive block 240 is embedded inside the lock tongue 200, and both ends of the first conductive block 240 penetrate out from both sides of the lock tongue 200. The end face of the first conductive block 240 is flush or almost flush with the outer side wall of the lock tongue 200. A driving circuit is arranged inside the lock body 100. The driving circuit is connected in series with the electromagnet. The driving circuit is in an open state to form two conductive contacts. Each of the two contacts is connected with a second conductive block 120. The two second conductive blocks 120 are respectively embedded on two opposite side walls of the sliding groove 131. When the lock tongue 200 moves down to a preset distance, both ends of the first conductive block 240 respectively abut against the second conductive blocks 120 on both sides, so that the first conductive block 240 connects the two second conductive blocks 120, and the driving circuit is in a closed conduction state. The driving circuit provides electric energy for the electromagnet, so that the electromagnet generates magnetism to adsorb the first magnetic member. The magnetic adsorption force between the electromagnet and the first magnetic member can balance the elastic force of the spiral spring, accelerate the downward movement speed of the lock tongue 200, improve the efficiency of unlocking the vehicle door. At the same time, it will also reduce the force required to pull the handle, improve comfort or reduce the load on the motor 400.

[0044] It can be understood that the height of the first conductive block 240 is greater than that of the second conductive block 120 to ensure the stability of the magnetic force provided during the downward movement of the lock tongue 200. Both the first conductive block 240 and the second conductive block 120 have conductivity. A power supply is connected in the driving circuit. The power supply is a power supply battery installed inside the lock body 100 or other power supplies connected to the outside by leads.

[0045] In other embodiments, both the first magnetic member 230 and the second magnetic member 110 can also be magnetic blocks and are arranged with opposite magnetic poles. When it is necessary to overcome the elastic force of the spiral spring to move the lock tongue 200 downward, the magnetic attraction force between the first magnetic member 230 and the second magnetic member 110 can balance the elastic force of the spiral spring, so that the lock tongue 200 moves downward faster.

[0046] Further, a first limiting wheel 600 is installed on the inner bottom side of the lock body 100. The first limiting wheel 600 is located below the fixing plate 130. After one end of the traction rope 300 is connected to the bottom of the lock tongue 200, it bypasses the bottom of the first limiting wheel 600 and then is connected to the first winding wheel 410. The first limiting wheel 600 can limit the front and rear positions of the traction rope 300, so as to ensure the stability and reliability of the traction rope 300 during movement. The position of the motor 400 can also be distributed on the right side, so that the internal space of the lock body 100 is more reasonably distributed.

[0047] This embodiment also provides a vehicle, including the above door automatic unlocking mechanism and a collision module.

[0048] Embodiment Two:

[0049] Referring to Figures 7-11 , the difference between the second embodiment and the first embodiment of this application lies in the different structures of the first conductive block 240 and the different structures of the locking tongue 200.

[0050] Specifically, the direction of the straight line connecting the centers of the two second conductive blocks 120 is set as the straight contact direction. The first conductive block 240 includes a third conductive block 241, a fourth conductive block 242, a second elastic member 243 and a third elastic member 244. The third conductive block 241 and the fourth conductive block 242 are both slidably arranged inside the locking tongue 200 along the straight contact direction, and the third conductive block 241 and the fourth conductive block 242 are slidably connected and in contact with each other at both sides in the front-rear direction, so that the third conductive block 241 and the fourth conductive block 242 can conduct electricity with each other.

[0051] The second elastic member 243 is connected between the locking tongue 200 and the third conductive block 241, so that the second elastic member 243 provides an elastic force to extend the third conductive block 241 out of the outer wall of the locking tongue 200. That is, when the locking tongue 200 moves down until the third conductive block 241 contacts the corresponding second conductive block 120, the elastic force of the second elastic member 243 can make the third conductive block 241 press tightly against the corresponding second conductive block 120, ensuring good contact between the second conductive block 120 and the third conductive block 241.

[0052] The third elastic member 244 is connected between the locking tongue 200 and the fourth conductive block 242, so that the third elastic member 244 provides an elastic force to extend the fourth conductive block 242 out of the outer wall of the locking tongue 200. That is, when the locking tongue 200 moves downward until the fourth conductive block 242 contacts the second conductive block 120 on the corresponding side, the elastic force of the third elastic member 244 can make the fourth conductive block 242 press tightly against the second conductive block 120 on the corresponding side, ensuring good contact between the second conductive block 120 and the fourth conductive block 242. Furthermore, the stability and reliability of the connection between the first conductive block 240 and the two second conductive blocks 120 can be ensured. Among them, both the second elastic member 243 and the third elastic member 244 are spiral springs. One end of the spiral spring is connected to the locking tongue 200, and the other end is connected to the corresponding third conductive block 241 or fourth conductive block 242. In other embodiments, the second elastic member 243 and the third elastic member 244 can also be combined to form a large spiral spring with the middle fixed in the middle of the locking tongue 200, and the two ends are respectively connected to the third conductive block 241 and the fourth conductive block 242. In addition, due to the existence of the second elastic member 243 and the third elastic member 244, both ends of the first conductive block 240 slightly protrude from the outer wall of the locking tongue 200, and chamfer structures are formed on the upper and lower sides of both ends of the first conductive block 240 to ensure the normal sliding of the locking tongue 200.

[0053] Furthermore, the locking tongue 200 includes a lower rod and an upper rod arranged coaxially. The bottom of the upper rod is rotatably connected to the top of the lower rod. The lower rod is inserted into the sliding groove 131. The threaded spring is sleeved on the middle part of the lower rod. One end of the traction rope 300 is connected to the bottom of the lower rod. The limiting block 220 is installed at the top position of the lower rod. The top of the upper rod can pass through the through groove 102 out of the lock body 100. The guiding inclined surface 201 is arranged at the top of the upper rod.

[0054] The through groove 102 is set to be circular, so that the through groove 102 can allow the upper rod to slide and rotate relative to the lock body 100. A first bevel gear 500 and a second bevel gear 510 are respectively rotatably installed inside the lock body 100. The rotation axis of the first bevel gear 500 is perpendicular to the rotation axis of the second bevel gear 510, and the first bevel gear 500 and the second bevel gear 510 are meshed and connected to each other. The first bevel gear 500 is sleeved on the outer wall of the upper rod, and the first bevel gear 500 is slidably connected to the upper rod. A second winding wheel 520 is coaxially installed on one side of the second bevel gear 510. A fourth elastic member is also installed inside the lock body 100. The fourth elastic member provides a restoring elastic force for the second winding wheel 520. A branch rope 530 is connected between the first winding wheel 410 and the first limiting wheel 600 of the traction rope 300. The branch rope 530 bypasses the first limiting wheel 600 and is wound on the second winding wheel 520. It can be understood that the branch rope 530 is fixed on the outer wall of the second winding wheel 520 after being wound on the second winding wheel 520.

[0055] Under the elastic force of the fourth elastic member, the second winding wheel 520 remains in a preset initial state, that is, the first bevel gear 500 and the second bevel gear 510 will not rotate, and the overall upward and downward sliding of the lock tongue 200 will not be affected by the first bevel gear 500. When the motor 400 drives the first winding wheel 410 to wind the traction rope 300, it will drive the lock tongue 200 to move downward. At the same time, after the traction rope 300 pulls the bifurcated rope 530, the bifurcated rope 530 overcomes the elastic force of the fourth elastic member and drives the second winding wheel 520 to rotate. Under the transmission action of the second bevel gear 510 and the first bevel gear 500, the upper rod is driven to rotate 180 degrees, so that the position of the guide inclined surface 201 faces the inside of the groove 101. At this time, the door lock head inside the groove 101 can move out of the groove 101 by contacting the guide inclined surface 201, so that the door is automatically unlocked. Automatic unlocking of the door is achieved by changing the direction of the guiding inclined surface 201. On the one hand, the overall downward movement distance of the lock tongue 200 can be shortened to speed up the unlocking process. On the other hand, the free swinging of the door after automatic unlocking can reduce the possibility of secondary accidents, thereby further improving the safety of the occupants.

[0056] Furthermore, a second limiting wheel 610 is installed at the left side of the bottom of the lock body 100. One end of the bifurcated rope 530 is connected to the traction rope 300, and the other end passes around the bottom of the first limiting wheel 600 and then around the left side of the second winding wheel 520, and then is wound on the second winding wheel 520. The second limiting wheel 610 can limit the front and rear positions of the bifurcated rope 530 to ensure the stability and reliability of the bifurcated rope 530 during the pulling process.

[0057] It should be noted that in another lock body 100 structure, a limiting hole is provided on the upper side of the groove 101. Under the elastic action of the first elastic member 210, the top of the lock tongue 200, i.e., the top of the upper rod, extends out of the lock body 100 and is embedded in the limiting hole, thereby improving the locking firmness of the lock tongue. At this time, the bifurcated rope 530 can be provided with an empty section at one end, so that after the traction rope 300 pulls the lock tongue 200 until the top of the lock tongue 200 is separated from the limiting hole, the bifurcated rope 530 changes from a relaxed state to a tightened state. In this process, the bifurcated rope 530 will not pull the second winding wheel 520 to rotate; when the traction rope 300 continues to be pulled, the lock tongue 200 continues to fall, and the bifurcated rope 530 at this time will pull the second winding wheel 520 to rotate, thereby driving the upper rod to rotate relative to the lower rod, changing the direction of the guiding inclined surface 201, and realizing the rapid unlocking of the door.

[0058] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A vehicle door automatic unlocking mechanism, applied to a vehicle with a collision module, wherein the collision module is used to detect whether the vehicle has a collision, characterized in that: The automatic door unlocking mechanism comprises: The lock body is provided with a through slot; A lock tongue is slidably connected to the lock body, a first elastic member is installed between the lock tongue and the lock body, and the first elastic member provides elastic force to extend the lock tongue from the through slot out of the lock body; A traction rope, one end of which is connected to the locking tongue; a driving member connected to the traction rope, wherein the driving member is configured to drive the traction rope to pull the lock tongue when receiving an unlocking command, so that the lock tongue overcomes the elastic force of the first elastic member and extends into the lock body; When the vehicle collides, the collision module sends the unlocking command to the driving member.

2. The automatic door unlocking mechanism according to claim 1, characterized in that: The lock tongue is provided with a first magnetic attraction component, and the lock body is provided with a second magnetic attraction component; when the lock tongue is extended into the lock body, the first magnetic attraction component and the second magnetic attraction component are attracted to each other.

3. The automatic door unlocking mechanism according to claim 2, characterized in that: The second magnetic attraction member is an electromagnet, the lock tongue is provided with a first conductive block, the lock body is provided with a drive circuit connected in series with the electromagnet, the drive circuit has two contacts, and the first conductive block is used to connect or disconnect the two contacts; When the lock tongue extends into the lock body to reach a preset distance, the first conductive block connects the two contacts to turn on the drive circuit and supply power to the electromagnet. After the electromagnet is energized, it attracts the first magnetic attraction member.

4. The automatic door unlocking mechanism according to claim 3, characterized in that: The lock body is provided with a slide groove for the lock tongue to pass through, the two ends of the first conductive block are respectively passed through the two sides of the lock tongue, the two contacts are respectively connected to the second conductive blocks, and the two second conductive blocks are respectively embedded in the opposite side walls of the slide groove; When the lock tongue extends into the lock body to reach a preset distance, two ends of the first conductive block respectively contact two of the second conductive blocks, so that the first conductive block connects the two contact points.

5. The automatic door unlocking mechanism according to claim 4, characterized in that: The lock body is provided with a fixing plate, the sliding groove is opened on the fixing plate, the locking tongue is provided with a limiting block, the first elastic member is a coil spring whose two ends respectively abut against the limiting block and the fixing plate, and the coil spring is sleeved on the locking tongue.

6. The automatic door unlocking mechanism according to claim 5, characterized in that: The limit block is provided with a support plate, and the first magnetic attraction member and the second magnetic attraction member are respectively installed on the support plate and the fixed plate; the support plate is connected with a pull rope, and one end of the pull rope away from the support plate passes through the fixed plate and is transmission-connected to the door handle.

7. The automatic door unlocking mechanism according to claim 4, characterized in that: The direction of the line connecting the centers of the two second conductive blocks is a linear contact direction, the first conductive block includes a third conductive block and a fourth conductive block that slide relatively on the lock tongue along the linear contact direction, the lock tongue is provided with a second elastic member and a third elastic member, the second elastic member provides an elastic force to press the third conductive block against one of the contacts, and the third elastic member provides an elastic force to press the fourth conductive block against the other contact.

8. The automatic door unlocking mechanism according to claim 1, characterized in that: The driving member includes a motor installed on the lock body, a first winding wheel is installed on the output end of the motor, and the end of the traction rope away from the lock tongue is arranged on the first winding wheel. The motor is configured to drive the first winding wheel to rotate and wind the traction rope when receiving the unlocking command, so that the traction rope pulls the lock tongue into the lock body.

9. The automatic door unlocking mechanism according to claim 8, characterized in that: The portion of the lock tongue extending out of the lock body is provided with a guiding inclined surface, the lock tongue can rotate relative to the lock body, the lock body is respectively rotatably mounted with a first bevel gear and a second bevel gear, the first bevel gear and the second bevel gear are meshed and connected, the first bevel gear is slidably connected with the lock tongue, the second bevel gear is mounted with a second winding wheel, the lock body is mounted with a fourth elastic member, the fourth elastic member provides an elastic force to reset the second winding wheel, the traction rope is connected with a bifurcated rope, and one end of the bifurcated rope away from the traction rope is wound around the second winding wheel; When the motor drives the first winding wheel to rotate, the traction rope pulls the bifurcated rope to overcome the elastic force of the fourth elastic member and pulls the second winding wheel to rotate, and under the transmission action of the first bevel gear and the second bevel gear, drives the locking tongue to rotate.

10. A vehicle, characterized in that: It comprises an automatic door unlocking mechanism as described in any one of claims 1 to 9 and the collision module.

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