CN109138657B - Automatic locking device and method for vehicle-mounted box door of automobile - Google Patents

Abstract

The invention relates to the technical field of automotive interior accessories, in particular to an automatic locking device and an automatic locking method for an automotive vehicle-mounted box door. Under the action of the magnet assembly, the automatic locking between the box door and the box body can be realized once the box door is closed, and the operation is convenient.

Description

Automatic locking device and method for vehicle-mounted box door of automobile

Technical Field

The invention relates to the technical field of automotive interior fittings, in particular to an automatic locking device and method for an automotive vehicle-mounted box door.

Background

The locking method applied to the vehicle-mounted box door (for example, the vehicle-mounted rear-row refrigerator door) of the automobile at present comprises the following steps: a door handle is arranged on the box door, and a lock tongue is arranged at the upper part of the door handle; a compression spring is arranged below the door handle; a locking mechanism is independent of the box door body and comprises a lock tongue hole; the user will be with the chamber door locking, closes the position of spring bolt and locking mechanism contact with the chamber door earlier, then needs manual push down the doorknob, makes the spring bolt avoid with the interference of locking mechanism, closes the closed position with the chamber door, then the user loosens the hand again, and the doorknob upwards return under the effect of compression spring elasticity to insert the spring bolt in the spring bolt hole of locking mechanism, realize the locking of chamber door.

In this kind of general locking method of on-vehicle box door of current car, its drawback lies in, the user must manually depress the chamber door handle and just can close and lock the chamber door, and owing to there is sealed requirement to the chamber door, the door body sealing washer will receive the compression, so just need compression spring to provide great elasticity or user to promote the chamber door toward the refrigerator body after the door is closed again and just can make the spring bolt of door handle insert in locking mechanism's hasp hole, that is to say, even if the chamber door is closed the back and also can't realize automatic locking if not exert certain pressure, this brings very big inconvenience for user's operation. In addition, the spring can provide a larger elastic force after being compressed, which indicates that a larger pressure needs to be provided when compressing the spring, and it is very difficult for users with small strength, such as children and women, to open or close the door. Finally, the bolt on the upper part of the door handle is exposed, so that the appearance of the whole door handle is influenced, and the door handle is easy to hook foreign objects to cause inconvenience.

Disclosure of Invention

The invention aims to provide an automatic locking device and method for an automobile vehicle-mounted box door, and aims to solve the technical problem that the automobile vehicle-mounted box door in the prior art cannot be automatically locked.

In order to achieve the purpose, the technical scheme of the invention is as follows: an automatic locking device of a vehicle-mounted box body door of an automobile comprises a locking mechanism, an unlocking mechanism, a lever component and a magnet component, the magnet assembly comprises a box body magnet, a box door magnet and a lever magnet, the box body magnet is arranged in the box body, the box door magnet is arranged in the box door and corresponds to the box body magnet in position, the locking mechanism is arranged between the box body and the box door, the lever assembly is arranged in the box body, the lever magnet and the locking mechanism are respectively connected with two ends of the lever assembly, the lever magnet is positioned between the box body magnet and the box door magnet, the polarities of the adjacent ends of the lever magnet and the box body magnet are opposite, the polarities of the adjacent ends of the lever magnet and the door magnet are the same, and the unlocking mechanism is arranged in the door and connected with the door magnet to control the door magnet to approach or depart from the lever magnet; when the door magnet is close to the lever magnet, the locking mechanism is connected with the box body and the door in a locking manner; when the door magnet is far away from the lever magnet, the locking mechanism releases the locking connection between the box body and the door.

Preferably, a stopper is disposed in the case between the lever magnet and the case magnet to prevent the lever magnet from directly contacting the case magnet.

Preferably, the locking mechanism comprises a lock tongue and a lock catch hole, the lock catch hole is formed in the box door, the lock tongue is arranged in the box body and corresponds to the lock catch hole in position, the lock tongue is connected with one end of the lever assembly, the lock tongue is inserted into the lock catch hole when the lever assembly rotates in the forward direction, and the lock tongue is separated from the lock catch hole when the lever assembly rotates in the reverse direction.

Preferably, the box body is provided with a tongue window corresponding to the position of the lock catch hole, and the lock tongue is arranged in the tongue window and is in sliding connection with the inner wall of the tongue window.

Preferably, the locking mechanism further comprises an elastic piece, and the elastic piece is arranged in the box body and connected with the lock tongue to provide elastic force for pulling the lock tongue to be hidden in the lock tongue window.

Preferably, a baffle plate which is abutted with the lock tongue when the lock tongue is inserted into the lock catch hole is arranged in the lock catch hole.

Preferably, the lever assembly comprises a lever and a fulcrum seat, the fulcrum seat is fixed in the box body, the lever is hinged to the fulcrum seat, and the lever magnet and the locking mechanism are respectively connected with two ends of the lever.

Preferably, the unlocking mechanism is a rope type unlocking mechanism, a connecting rod type unlocking mechanism or a sliding block sliding groove type unlocking mechanism.

Preferably, the door is provided with a door switch, and the unlocking mechanism is connected with the door switch.

The invention has the beneficial effects that: according to the automatic locking device for the vehicle-mounted box door of the automobile, after the box door is closed, because the lever magnet connected to one end of the lever assembly is very close to the magnet of the box door, a strong mutual repulsive force is formed between the two magnets with the same magnetic poles, and the lever assembly rotates in the forward direction under the action of the repulsive force; when the lever magnet is repelled to a certain distance, repulsion force is weakened, at the moment, the distance between the lever magnet and a box body magnet fixed in the box body and having opposite polarities is shortened, attraction force between the two magnets with opposite magnetic poles is strengthened, the strengthened attraction force and the weakened repulsion force jointly make the lever assembly continuously rotate in the forward direction until a locking mechanism connected with the other end of the lever assembly is driven to connect the box body and the box door in a matched mode, so that once the box door is closed, the box door and the box body can be automatically locked, and the excellent operation convenience is achieved.

The other technical scheme of the invention is as follows: an automatic locking method for a rear-row vehicle-mounted door of an automobile comprises the following steps:

s1: providing a locking mechanism for locking and connecting the box body and the box door, and installing the locking mechanism between the box body and the box door;

s2: providing a lever assembly, installing the lever assembly in the box body, and connecting the locking mechanism with one end of the lever assembly;

s3: providing a magnet assembly comprising a box body magnet, a box door magnet and a lever magnet, wherein the box body magnet is arranged in the box body, the box door magnet is arranged in the box door and corresponds to the box body magnet in position, the lever magnet is arranged between the box body magnet and the box door magnet and is connected with the other end of the lever assembly, the polarities of the adjacent ends of the lever magnet and the box body magnet are opposite, and the polarities of the adjacent ends of the lever magnet and the box door magnet are the same;

s4: providing an unlocking mechanism, and installing the unlocking mechanism in the box door and connecting the unlocking mechanism with the box door magnet;

s5: the box door is closed so that the box door magnet is close to the lever magnet, and the locking mechanism is connected with the box body and the box door in a locking manner; and triggering the unlocking mechanism to enable the door magnet to be far away from the lever magnet, and releasing the locking connection between the box body and the door by the locking mechanism.

According to the automatic locking method for the automobile rear-row vehicle-mounted box door, after the box door is closed, because the distance between the lever magnet connected to one end of the lever assembly and the box door magnet is very close, a strong mutual repulsive force is formed between the two magnets with the same magnetic poles, and the lever assembly rotates in the forward direction under the action of the repulsive force; when the lever magnet is repelled to a certain distance, repulsion force is weakened, at the moment, the distance between the lever magnet and a box body magnet fixed in the box body and having opposite polarities is shortened, attraction force between the two magnets with opposite magnetic poles is strengthened, the strengthened attraction force and the weakened repulsion force jointly make the lever assembly continuously rotate in the forward direction until a locking mechanism connected with the other end of the lever assembly is driven to connect the box body and the box door in a matched mode, so that once the box door is closed, the box door and the box body can be automatically locked, and the excellent operation convenience is achieved.

Drawings

Fig. 1 is a schematic structural diagram of an automatic locking device for a vehicle-mounted compartment door of an automobile, which is provided by an embodiment of the invention and is partially installed in a compartment.

Fig. 2 is a schematic structural diagram of an automatic locking device of an automobile-mounted compartment door, which is provided by an embodiment of the invention and has a partial structure mounted on a compartment door.

Fig. 3 is a schematic structural diagram of a door and a box body of an automatic locking device of an automobile-mounted box body door, which is provided by the embodiment of the invention and is in a closed state.

Fig. 4 is a schematic structural diagram of a door and a box body of an automatic locking device of an automobile-mounted box body door provided by an embodiment of the invention in a locked state.

Fig. 5 is a schematic structural diagram of a door and a box body of an automatic locking device of an automobile-mounted box body door provided by an embodiment of the invention in an open state.

The reference numerals include:

10-locking mechanism 11-bolt 12-lock catch hole

13-elastic piece 20-unlocking mechanism 30-lever assembly

31-lever 32-fulcrum seat 40-magnet assembly

41-box magnet 42-box door magnet 43-lever magnet

50-stop block 60-door switch 70-box body

71-tongue window 80-box door 81-baffle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be used for explanation of the invention, and should not be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 5, an automatic locking device for a vehicle-mounted box door of an automobile according to an embodiment of the present invention may be applied to a vehicle-mounted rear refrigerator. The automatic locking device of the vehicle-mounted box door of the automobile comprises a locking mechanism 10, an unlocking mechanism 20, a lever component 30 and a magnet component 40, wherein the magnet component 40 comprises a box magnet 41, a box door magnet 42 and a lever magnet 43, the box magnet 41 is arranged in a box body 70, the box door magnet 42 is arranged in the box door 80 and corresponds to the box magnet 41 in position, the locking mechanism 10 is arranged between the box body 70 and the box door 80, the lever component 30 is arranged in the box body 70, the lever magnet 43 and the locking mechanism 10 are respectively connected with two ends of the lever component 30, the lever magnet 43 is arranged between the box magnet 41 and the box door magnet 42, the polarities of the adjacent ends of the lever magnet 43 and the box magnet 41 are opposite, the polarities of the adjacent ends of the lever magnet 43 and the box door magnet 42 are the same, the unlocking mechanism 20 is arranged in the box door 80 and connected with the box door magnet 42 for controlling the box magnet 42 The door magnet 42 is close to or far from the lever magnet 43, and when the door magnet 42 is close to the lever magnet 43, the locking mechanism 10 is locked and connected with the box body 70 and the door 80; when the door magnet 42 is away from the lever magnet 43, the locking mechanism 10 releases the locking connection between the box body 70 and the door 80. Specifically, the polarities of the ends of the lever magnet 43 adjacent to the door magnet 42 are N-poles, and the polarities of the ends of the lever magnet 43 adjacent to the box magnet 41 are S-pole and N-pole, respectively. Similarly, when the polarities of the adjacent ends of the lever magnet 43 and the door magnet 42 are both S-poles, the polarities of the adjacent ends of the lever magnet 43 and the box magnet 41 are respectively N-pole and S-pole.

Further, when the door magnet 42 approaches the lever magnet 43, the lever magnet 43 drives the lever assembly 30 to rotate forward under the repulsive force of the door magnet 42 and the attractive force of the box magnet 41 to lock the locking mechanism 10 to connect the box 70 and the door 80.

Further, when the door magnet 42 is far away from the lever magnet 43, the locking mechanism 10 overcomes the attraction of the box magnet 41 to the lever magnet 43 under the action of gravity to drive the lever assembly 30 to rotate reversely, so that the locking mechanism 10 releases the locking connection between the box 70 and the door 80.

The fact that the lever magnet 43 is located between the casing magnet 41 and the door magnet 42 means that the lever magnet 43 always moves within a range between the casing magnet 41 and the door magnet 42 while the lever magnet 43 swings with one end of the lever assembly 30.

Specifically, according to the automatic locking device for the vehicle-mounted box door of the automobile of the embodiment of the invention, after the box door 80 is closed, because the lever magnet 43 connected to one end of the lever assembly 30 is very close to the box door magnet 42, a strong mutual repulsive force is formed between the two magnets with the same magnetic poles, and the lever assembly 30 rotates in the forward direction under the repulsive force; when the lever magnet 43 is repelled to a certain distance, the repulsion force is weakened, at this time, the distance between the lever magnet 43 and the box magnet 41 fixed in the box 70 and having opposite polarities is reduced, the attraction force between the two magnets having opposite polarities is strengthened, the strengthened attraction force and the weakened repulsion force combine to make the lever assembly 30 continue to rotate in the forward direction until the locking mechanism 10 connected to the other end of the lever assembly 30 is driven to lock and connect the box 70 and the box door 80, so that the box door 80 and the box 70 can be automatically locked once the box door 80 is closed without being electrified, and the door locking device has excellent operation convenience.

It should be further noted that, in the present embodiment, the forward rotation of the lever assembly 30 is exemplified by clockwise rotation, and the reverse rotation of the lever assembly 30 is exemplified by counterclockwise rotation. Of course, in other embodiments, the forward rotation of the lever assembly 30 may be a counterclockwise rotation, and the reverse rotation of the lever assembly 30 may be a clockwise rotation.

In this embodiment, as shown in fig. 1 and 3 to 5, a stopper 50 is provided in the case 70 between the lever magnet 43 and the case magnet 41 to prevent the lever magnet 43 from directly contacting the case magnet 41. Specifically, with the continuous forward rotation of the lever assembly 30, the attraction force will be strengthened continuously, after the locking mechanism 10 completes the locking connection of the box door 80 and the box body 70, the lever assembly 30 will be blocked by the stopper 50 disposed between the lever magnet 43 and the box body magnet 41, so that the lever assembly 30 stops rotating continuously, and further the lever assembly 30 will be prevented from rotating forward all the time until the box body magnet 41 fixed in the box body 70 and the lever magnet 43 attract each other, at this time, even if the repulsive force provided by the door body magnet in the door body is removed, the lever assembly 30 cannot be restored to the initial state and directly attracted on the box body magnet 41, the locking mechanism 10 will always lock and connect the box body 70 and the box door 80, and the box door 80 will be locked and cannot be opened all the time.

Further, as shown in fig. 3 to 5, in this embodiment, the locking mechanism 10 includes a lock tongue 11 and a lock hole 12, the lock hole 12 is disposed on the door 80, the lock tongue 11 is disposed in the box body 70 and corresponds to the lock hole 12, the lock tongue 11 is connected to one end of the lever assembly 30, when the lever assembly 30 rotates in the forward direction, the lock tongue 11 is inserted into the lock hole 12, and when the lever assembly 30 rotates in the reverse direction, the lock tongue 11 is separated from the lock hole 12. Specifically, when the door 80 is in the open state, the latch 11 is hidden in the box 70 under the action of gravity, and when the door 80 is closed, the door 80 is locked, and it is not necessary to overcome other external forces except the gravity of the latch 11, that is, the repulsion force generated between the door magnet 42 and the lever magnet 43 and the attraction force generated between the box magnet 41 and the lever magnet 43 act together to overcome the gravity of the latch 11, so that the lever assembly 30 rotates to drive the latch 11 to be locked and connected with the latch hole 12, and further, the closed state of the door 80 is changed into the locked state.

When the door 80 is to be opened, the user pulls the door 80 outward, and the unlocking mechanism 20 provided in the door 80 is triggered, so that the door magnet 42 connected to the unlocking mechanism 20 is gradually away from the lever magnet 43; at this time, the lever magnet 43 is only attracted by the casing magnet 41, but the lever assembly 30 cannot be held in the state where the door 80 is locked with the casing 70 by the attraction of the casing magnet 41 alone, the lever assembly 30 reversely rotates under the combined action of the gravity of the lever magnet 43, the gravity of the lever 31 and the restoring force of the elastic member 13, which are greater than the attraction of the magnet, the latch 11 is detached from the latch hole 12 and hidden in the casing 70, the entire locking mechanism 10 is restored to the initial state, and the door 80 can be opened.

In this embodiment, as shown in fig. 2 to 5, a tongue window 71 corresponding to the position of the lock catch hole 12 is disposed on the box body 70, and the lock tongue 11 is disposed in the tongue window 71 and slidably connected to an inner wall of the tongue window 71. Specifically, the arrangement of the tongue window 71 provides a space for the telescopic movement of the latch tongue 11, and ensures that the movement path of the latch tongue 11 is along the inner wall of the tongue window 71, having a guiding function. Meanwhile, the lock can ensure that the bolt 11 is hidden in the lock window when the box door 80 is opened, so that the bolt 11 is prevented from hooking foreign objects, and the overall appearance is more attractive.

In this embodiment, as shown in fig. 1 and fig. 3 to 5, the locking mechanism 10 further includes an elastic member 13, and the elastic member 13 is disposed in the box 70 and connected to the latch 11 to provide an elastic force for pulling the latch 11 to be hidden in the latch window 71. Specifically, the elastic element 13 is arranged to further ensure that the latch 11 is always hidden in the latch window 71 when the door 80 is opened, that is, when the unlocking mechanism 20 is gradually pressed down, the door 80 is opened, and the repulsive force between the door magnet 42 and the lever magnet 43 is gradually reduced by the combination of the elastic force generated by the elastic element 13, the gravity of the lever magnet 43, and the gravity of the lever 31, the attractive force between the box magnet 41 and the lever magnet 43, the fulcrum frictional resistance when the lever assembly 30 rotates, and the frictional resistance when the latch 11 slides relative to the latch window 71 can be overcome, so that the latch 11 can be completely hidden in the latch window 71, and the structure and the design are ingenious, and the practicability is strong.

In this embodiment, as shown in fig. 2 to 5, a blocking plate 81 is disposed in the lock hole 12 and abuts against the latch tongue 11 when the latch tongue 11 is inserted into the lock hole 12. Specifically, in order to prevent the lever assembly 30 from continuing to rotate in the forward direction after the latch bolt 11 is locked with the latch hole 12, the latch bolt 11 is prevented from continuing to extend into the latch hole 12 by directly providing a stopper 81 in the latch hole 12 and then preventing the latch bolt 11 from continuing to extend into the latch hole 12 by the stopper 81, so that once the relative movement between the latch bolt 11 and the latch hole 12 is prevented, the movement of the lever assembly 30 is prevented,

in this embodiment, as shown in fig. 1 and fig. 3 to 5, the lever assembly 30 includes a lever 31 and a fulcrum seat 32, the fulcrum seat 32 is fixed in the box 70, the lever 31 is hinged to the fulcrum seat 32, and the lever magnet 43 and the locking mechanism 10 are respectively connected to two ends of the lever 31. Specifically, the fulcrum seat 32 functions to provide a fulcrum for the lever 31, ensuring that the lever 31 can rotate in the forward or reverse direction about the hinge with the fulcrum seat 32. Accordingly, the lever magnet 43 and the latch 11 are connected to both ends of the lever 31, respectively. Thus, when the door 80 is closed, the combined action of the repulsive force between the lever magnet 43 and the door 80 and the attractive force between the lever magnet 43 and the cabinet magnet 41 drives the lever 31 to rotate in the forward direction around the hinge point with the fulcrum seat 32 until the latch 11 is locked with the latch hole 12 against the gravity, the elastic force of the elastic member 13 and the frictional resistance of the relative rotation between the door 80 and the cabinet 70, so that the automatic locking between the door 80 and the cabinet 70 is realized. When the door 80 is opened, the repulsive force between the lever magnet 43 and the door magnet 42 gradually disappears, and the latch 11 overcomes the attractive force between the lever magnet 43 and the box body magnet 41 under the elastic force of the elastic piece 13 and the gravity of the latch 11 to drive the latch 11 to be separated from the locking connection with the lock catch hole 12, so that the door 80 is in contact locking connection with the box body 70, and the door structure is ingenious in design and strong in practicability.

It should be further noted that the lever 31 is used for amplifying the magnetic force of the magnet by the lever principle, so that the magnetic force of the magnet can overcome the resistance forces such as the spring force and the motion friction force on the latch bolt 11 by amplifying the magnetic force of the magnet by the lever 31, and the lever 31 rotates around the fulcrum, so that the latch bolt 11 is inserted into the latch hole 12.

Of course, in this embodiment, the parameters such as the material, shape, size, arrangement distance, spring force of the elastic member 13, the frictional resistance of the relative rotation between the door 80 and the box 70, and the weight of the whole motion system need to be designed comprehensively to balance the attraction force, the repulsion force, the gravity, the spring force, and the resistance of the lever assembly 30; however, when the repulsive force between the lever magnet 43 and the box magnet 41 is removed or weakened, the force balance of the lever assembly 30 is broken, and the lever 31 of the lever assembly 30 rotates in the reverse direction under the action of the magnetic force, such as the spring force, the resultant force of gravity, and the like, which makes the lever 31 of the lever assembly 30 have a tendency to rotate in the reverse direction, which is greater than the magnetic force which makes the lever 31 of the lever assembly 30 have a tendency to rotate in the forward direction.

Preferably, the elastic member 13 may employ a spring.

In this embodiment, the unlocking mechanism 20 is a rope type unlocking mechanism, a connecting rod type unlocking mechanism, or a sliding block and sliding groove type unlocking mechanism. Specifically, the form of the unlocking mechanism 20 may be various, as long as when the unlocking mechanism 20 is triggered, the unlocking mechanism 20 can make the door magnet 42 connected to the unlocking mechanism 20 leave the position initially close to the lever magnet 43 through a series of movements, for example, the rope type, the link type, and the simple slider-sliding groove type unlocking mechanism 20 may all be implemented to ensure that the unlocking mechanism 20 can drive the door magnet 42 to leave the initial position close to the lever magnet 43.

In this embodiment, as shown in fig. 2 to 5, the door 80 is provided with a door switch 60, and the unlocking mechanism 20 is connected to the door switch 60. Specifically, the unlocking mechanism 20 is connected to the door switch 60 such that the unlocking mechanism 20 is linked to the door switch 60, such that, once the door switch 60 is pressed to activate the unlocking mechanism 20, the door magnet 42 is moved away from the lever magnet 43 by the unlocking mechanism 20, such that the repulsive force between the door magnet 42 and the lever magnet 43 is gradually weakened until the cancellation.

In other embodiments of the present invention, each component disposed on the box body 70 and each component disposed on the box door 80 may be exchanged, and the automatic locking function may also be achieved, even though a person may flexibly and reasonably arrange the lever assembly 30 and the magnet assembly 40, for example, arrange the lever assembly 30 on the side surface of the box body 70, symmetrically arrange two levers 31, arrange the lever 31 and the latch bolt 11 on the door body, and the like.

Referring to fig. 1 to 5, an embodiment of the present invention further provides an automatic locking method for a rear-row vehicle-mounted door of an automobile, including the following steps:

s1: providing a locking mechanism 10 for locking and connecting the box body 70 and the box door 80, and installing the locking mechanism 10 between the box body 70 and the box door 80;

s2: providing a lever assembly 30, installing the lever assembly 30 in the box body 70, and connecting the locking mechanism 10 with one end of the lever assembly 30;

s3: providing a magnet assembly 40 including a cabinet magnet 41, a door magnet 42 and a lever magnet 43, wherein the cabinet magnet 41 is disposed in a cabinet 70, the door magnet 42 is disposed in a door 80 and corresponds to the position of the cabinet magnet 41, the lever magnet 43 is disposed between the cabinet magnet 41 and the door magnet 42 and is connected to the other end of the lever assembly 30, the adjacent ends of the lever magnet 43 and the cabinet magnet 41 have opposite polarities, and the adjacent ends of the lever magnet 43 and the door magnet 42 have the same polarity;

s4: providing an unlocking mechanism 20, installing the unlocking mechanism 20 in the door 80 and connecting with the door magnet 42;

s5: closing the door 80 to make the door magnet 42 close to the lever magnet 43, and the locking mechanism 10 lockingly connects the box body 70 and the door 80; the unlocking mechanism 20 is triggered to move the door magnet 42 away from the lever magnet 43, and the locking mechanism 10 releases the locking connection between the box body 70 and the door 80.

According to the automatic locking method for the automobile rear row vehicle door, after the door 80 is closed, because the lever magnet 43 connected to one end of the lever component 30 is very close to the door magnet 42, strong mutual repulsion force is formed between the two magnets with the same magnetic poles, and the lever component 30 rotates in the positive direction under the action of the repulsion force; when the lever magnet 43 is repelled to a certain distance, the repulsion force is weakened, at this time, the distance between the lever magnet 43 and the box magnet 41 fixed in the box 70 and having opposite polarities is reduced, the attraction force between the two magnets having opposite polarities is strengthened, the strengthened attraction force and the weakened repulsion force combine to make the lever assembly 30 continue to rotate in the forward direction until the locking mechanism 10 connected to the other end of the lever assembly 30 is driven to lock and connect the box 70 and the box door 80, so that the box door 80 and the box 70 can be automatically locked once the box door 80 is closed, and the operation convenience is excellent.

In conclusion, the present invention has the following advantages:

the automatic locking of the box door can be realized, the power-on is not needed, and the structure is simpler;

secondly, in the closing process of the refrigerator door 80, the bolt 11 is always hidden in the bolt window 71, so that the appearance is not unsightly, the refrigerator seen by a user is simpler, and the bolt 11 is prevented from being contacted with an accidental object of the refrigerator door 80 body or the refrigerator body 70, so that special surface treatment is not needed to be carried out on the bolt 11 and the appearance surface of the door body or the refrigerator body 70 to prevent the appearance surface from being scratched, and the part cost can be saved;

the automatic locking is reliable, and the door 80 can be ensured to be automatically locked as long as the door 80 reaches the closed position; in the closing process of the door 80, the bolt 11 is always hidden in the bolt window 71, so that the door is closed more easily and reliably without extra resistance caused by the contact of the bolt 11 and the appearance surface of the box body 70 or the door 80 except the frictional resistance of the position of the rotating shaft of the door; when the gravity center of the door 80 is located at the side of the door rotating shaft close to the box body 70, the door 80 can be automatically closed under the action of the self gravity, and the door can also automatically reach the closed position without manual pushing.

So that it can be used to enhance the effectiveness of the prior art and has practicability, and becomes a product with practical value.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The automatic locking device of the vehicle-mounted box door of the automobile comprises a locking mechanism, an unlocking mechanism and a magnet assembly, wherein the locking mechanism is arranged between the box body and the box door, and is characterized in that the automatic locking device of the vehicle-mounted box door of the automobile further comprises a lever assembly, the magnet assembly comprises a box body magnet, a box door magnet and a lever magnet, the box body magnet is arranged in the box body, the box door magnet is arranged in the box door and corresponds to the box body magnet in position, the lever assembly is arranged in the box body, the lever magnet and the locking mechanism are respectively connected with two ends of the lever assembly, the lever magnet is arranged between the box body magnet and the box door magnet, the polarities of adjacent ends of the lever magnet and the box body magnet are opposite, and the polarities of adjacent ends of the lever magnet and the box door magnet are the same, the unlocking mechanism is arranged in the box door and is connected with the box door magnet so as to control the box door magnet to approach or be far away from the lever magnet; when the door magnet is close to the lever magnet, the locking mechanism is connected with the box body and the door in a locking manner; when the door magnet is far away from the lever magnet, the locking mechanism releases the locking connection between the box body and the door.

2. The automatic locking device of an automobile-mounted box door according to claim 1, wherein a stopper is provided in the box body between the lever magnet and the box body magnet to prevent the lever magnet from directly contacting the box body magnet.

3. The automatic locking device of the vehicular box door of the automobile as claimed in claim 1, wherein the locking mechanism comprises a lock tongue and a lock catch hole, the lock catch hole is formed in the box door, the lock tongue is arranged in the box body and corresponds to the lock catch hole in position, the lock tongue is connected with one end of the lever assembly, the lock tongue is inserted into the lock catch hole when the lever assembly rotates in a forward direction, and the lock tongue is separated from the lock catch hole when the lever assembly rotates in a reverse direction.

4. The automatic locking device for the vehicle-mounted box door of the automobile as claimed in claim 3, wherein a tongue window corresponding to the position of the lock catch hole is arranged on the box body, and the lock tongue is arranged in the tongue window and is slidably connected with the inner wall of the tongue window.

5. The automatic locking device of the vehicle-mounted box door of the automobile as claimed in claim 4, wherein the locking mechanism further comprises an elastic member, and the elastic member is arranged in the box body and connected with the lock tongue to provide an elastic force for pulling the lock tongue to be hidden in the lock tongue window.

6. The automatic locking device for the vehicle-mounted box door of the automobile as claimed in claim 3, wherein a baffle plate abutting against the lock tongue when the lock tongue is inserted into the lock hole is arranged in the lock hole.

7. The automatic locking device for the vehicle-mounted box door of the automobile as claimed in any one of claims 1 to 6, wherein the lever assembly comprises a lever and a fulcrum seat, the fulcrum seat is fixed in the box body, the lever is hinged to the fulcrum seat, and the lever magnet and the locking mechanism are respectively connected with two ends of the lever.

8. The automatic locking device for the vehicle-mounted box door of the automobile as claimed in any one of claims 1 to 6, wherein the unlocking mechanism is a rope type unlocking mechanism, a link type unlocking mechanism or a slider-and-slot type unlocking mechanism.

9. The automatic locking device for the vehicle-mounted box door of the automobile as claimed in any one of claims 1 to 6, wherein the box door is provided with a door switch, and the unlocking mechanism is connected with the door switch.

10. An automatic locking method for a rear-row vehicle-mounted door of an automobile is characterized by comprising the following steps:

s1: providing a locking mechanism for locking and connecting the box body and the box door, and installing the locking mechanism between the box body and the box door;

s2: providing a lever assembly, installing the lever assembly in the box body, and connecting the locking mechanism with one end of the lever assembly;

s3: providing a magnet assembly comprising a box body magnet, a box door magnet and a lever magnet, wherein the box body magnet is arranged in the box body, the box door magnet is arranged in the box door and corresponds to the box body magnet in position, the lever magnet is arranged between the box body magnet and the box door magnet and is connected with the other end of the lever assembly, the polarities of the adjacent ends of the lever magnet and the box body magnet are opposite, and the polarities of the adjacent ends of the lever magnet and the box door magnet are the same;

s4: providing an unlocking mechanism, and installing the unlocking mechanism in the box door and connecting the unlocking mechanism with the box door magnet;

s5: the box door is closed so that the box door magnet is close to the lever magnet, and the locking mechanism is connected with the box body and the box door in a locking manner; and triggering the unlocking mechanism to enable the door magnet to be far away from the lever magnet, and releasing the locking connection between the box body and the door by the locking mechanism.

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