An electric fuel tank lock

Abstract

The present invention discloses an electric fuel tank lock, which relates to the technical field of electronic locks and includes a lock body base and a lock tongue movably installed on the lock body base. The lock body base is provided with a first limiting member, and the lock tongue is provided with a limiting space cooperating with the first limiting member; a first buffer member movably installed on the lock tongue, the first buffer member includes a first clamping portion, and the lock tongue is provided with a second clamping portion. The first clamping portion and the second clamping portion are clamped and installed, and the displacement of the first buffer member drives the displacement of the lock tongue. In the present invention, a first buffer member is provided on the lock tongue, and the first buffer member realizes the buffering function through an elastic member, ensuring that the solenoid valve can be conducted immediately even in the case of rapid unlocking, and optimizing the abnormal unlocking phenomenon caused by too fast operation of the traditional electric control fuel tank lock.

Description

Technical Field

[0001] The present invention relates to the field of electronic locks, and in particular to an electric fuel tank lock. Background Art

[0002] Existing motorcycle fuel tank locks are mainly opened by mechanical keys. When refueling, the user needs to take out the mechanical key, align it with the keyhole, insert the mechanical key, and then unlock the tank. The process is complicated and inconvenient.

[0003] There is also a knob-type fuel tank cap currently available, which can be opened by simply rotating the cap; although it is easy to operate, it cannot lock the fuel tank, and sometimes passers-by can open the fuel tank when the car is parked on the roadside.

[0004] There is another kind of electronically controlled fuel tank lock for motorcycles on the market. When the cover is opened, the cover pushes the lock tongue, and the lock tongue pulls the lock rod. When the lock rod moves, the micro switch is pressed and driven, and then the micro switch is powered on to drive the solenoid valve to extend and retract to unlock the lock rod, and then the lock rod avoids the lock tongue to complete the opening of the fuel tank cover. During this period, the cover and the lock tongue are reset by the spring. If the user operates too quickly, the micro switch contacts are not energized in time, which will cause the lock rod and the solenoid valve to be stuck due to interference, so that the fuel tank lock cannot be unlocked, and the work is unreliable; due to the complicated structure principle and action, the parts have high precision requirements, otherwise they are easy to fail, which reduces the user experience;

[0005] At the same time, the electronic control structure of this type of electronic fuel tank lock is made on the fuel tank of the motorcycle body, occupying the space of the motorcycle body and not utilizing the space inside the fuel tank lock cover; when unlocking and waiting for refueling, in order to keep the fuel tank lock not locked, the solenoid valve is always energized during the waiting period for refueling, and the battery power is always consumed during the waiting period for refueling, which wastes resources and cannot guarantee safety.

[0006] On the other hand, the hinge structure of this type of electronically controlled fuel tank lock lacks a damping mechanism. When the fuel tank lock is opened or closed, it may swing rapidly due to inertia or external force, causing collision with other components, which can easily damage the paint surface and generate noise, and also affect the service life of the entire fuel tank lock. Summary of the invention

[0007] The present invention aims to solve one of the technical problems existing in the prior art.

[0008] The present application provides an electric fuel tank lock, including a fuel tank cover assembly, the fuel tank cover assembly including the following structure:

[0009] A lock body seat, and a lock tongue movably mounted on the lock body seat, wherein the lock body seat is provided with a first limiting piece, and the lock tongue is provided with a limiting space cooperating with the first limiting piece;

[0010] Install a first buffer member on the locking tongue. The first buffer member includes a first engaging portion, and a second engaging portion is provided on the locking tongue. The first engaging portion and the second engaging portion are engaged and installed, and the displacement of the first buffer member drives the displacement of the locking tongue.

[0011] The locking tongue is also provided with a first installation groove and a second installation groove.

[0012] A first elastic member, one end of the first elastic member is fixed to the first buffer member, and the other end is fixed to the first installation groove.

[0013] A second elastic member and a second limiting member. The second elastic member is installed in the second installation groove. The second limiting member is fixed to the lock body seat, and one end of the second elastic member is fixed to the second limiting member, and the other end of the second elastic member is fixed to one end of the second installation groove. Among them, the elastic force of the first elastic member is greater than that of the second elastic member.

[0014] An electromagnetic valve, including an electromagnetic valve body and an electromagnetic valve front rod. Before the electromagnetic valve front rod is energized, it is in an extended state. In the extended state of the electromagnetic valve front rod, it acts as a third limiting member to block one end in the unlocking movement direction of the locking tongue.

[0015] A microswitch, the microswitch is in contact connection with the first buffer member and is electrically connected to the electromagnetic valve.

[0016] A face cover and a dial cover installed on the face cover. One end of the dial cover is the driving end, and the other end is the movable end. The driving end drives the movable end to push against the first buffer member. After the first buffer member is pushed, it drives the locking tongue to displace in the direction of the electromagnetic valve front rod through the first elastic member and the second elastic member. After the microswitch senses the displacement state of the first buffer member, it energizes the electromagnetic valve to release the electromagnetic valve front rod.

[0017] Preferably, there are two first protrusions on the inner side of the first buffer member, and the locking tongue is provided with a first groove that cooperates with the first protrusion. The first groove and the first protrusion are in an engaged state, and there is a buffer distance between the inner end faces of the first protrusion and the first groove in the unlocking movement direction.

[0018] Preferably, one end in the unlocking movement direction of the locking tongue is provided with a protruding portion, and a second groove in contact connection with the electromagnetic valve front rod is provided at the top of the protruding portion.

[0019] Preferably, a rotating shaft is provided on the face cover, the movable end of the dial cover is movably connected to the rotating shaft, and a protrusion close to the first buffer member is provided at the movable end.

[0020] Preferably, it further includes an outer ring fixed to the fuel tank. There is a locking tongue groove on one side of the outer ring. When locked, the locking tongue is located in the locking tongue groove. A hinge structure is provided on the other side of the outer ring and is rotatably connected to one side of the fuel tank cover assembly.

[0021] Preferably, the hinge structure includes a cylindrical pin disposed on the outer ring and a pin slot disposed on the fuel tank cap assembly and mating with the cylindrical pin.

[0022] Preferably, the cylindrical pin is hollow and has a connection hole on one side in the middle; a wire passing hole is provided on the lock body seat, and one end of the wire passing hole communicates with the pin slot and cooperates with the inner cavity of the cylindrical pin for passing a wire harness.

[0023] Preferably, the hinge structure further includes a turning block installed on the fuel tank cap assembly, movably installed in the lock body seat, connected to the fuel tank cap assembly at one end, and connected to the cylindrical pin through the pin slot at the other end; a first damping structure and a second damping structure are respectively disposed between both sides of the turning block and both inner side walls of the lock body seat to provide a damping force when the turning block turns.

[0024] Preferably, both the first damping structure and the second damping structure include an arc groove provided on the side wall of the lock body seat, the arc groove being concentric with the axis of the cylindrical pin; a damping ring disposed in the arc groove; a first screw passing through the damping ring and connected to the turning block through a screw hole, and a spring is installed between the outer end and the outer side wall of the damping ring; a washer is provided between the spring and the outer side wall of the damping ring; a second screw installed on the front side of the lock body seat through an installation hole, the installation hole communicating with the arc groove, and tightening the second screw can compensate for the wear of the inner ring of the damping ring;

[0025] Wherein, the inner side wall of the damping ring slides and rubs against the outer side wall of the turning block, and the middle section of the first screw slides and rubs against the inner ring of the damping ring.

[0026] Advantageous effects: Adopting the technical solution provided by the present invention, compared with the prior art, it has the following advantageous effects:

[0027] A first buffer member is provided on the lock tongue, and the first buffer member realizes the buffering function through an elastic member, ensuring that the solenoid valve can be conducted immediately even in the case of rapid unlocking, and optimizing the abnormal unlocking phenomenon caused by too fast operation of the traditional electric control fuel tank lock.

[0028] At the same time, the electric control structure (function operation mechanism) is installed inside the fuel tank cap to optimize the space. Since the space at the edge of the fuel tank is limited, the designer considers placing the electric control structure inside the fuel tank cap. While maintaining the structure, function, strength, etc. of the traditional electric control fuel tank lock unchanged or even better, compared with the more complex structure of the traditional electric control fuel tank lock, the overall structure is made smaller through the cooperation of the buffer member and the lock tongue, and the structure is simple and compact, which provides convenience for realizing the structure of installing the electric control structure inside the fuel tank cap.

[0029] Furthermore, as a preferred solution, the hollow hole and the internal hole of the cylindrical pin cooperate for passing a wire harness, effectively solving the problem of wire routing for the electric control structure inside the fuel tank cap.

[0030] When the fuel tank cap assembly is opened or closed, the flipping block flips within the lock body seat. The inner sidewall of the damping ring rubs against the sidewall of the flipping block, while the gasket rubs against the outer sidewall of the damping ring. Also, the middle section of the first screw rubs against the inner ring of the damping ring, providing a damping force during the opening or closing process of the fuel tank cap assembly. This prevents the fuel tank cap assembly from colliding with other components due to rapid swinging caused by inertia during the opening and closing process, effectively reducing noise, protecting the paint surface, and extending the service life of the entire fuel tank lock. Description of the Drawings

[0031] Figure 1 Structural diagram of the opened state of the electric fuel tank lock proposed in an embodiment of the present invention;

[0032] Figure 2 Structural diagram of the closed state of the electric fuel tank lock proposed in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the internal structure within the fuel tank cap assembly proposed in an embodiment of the present invention;

[0034] Figure 4 Cross-sectional view of the electric fuel tank lock proposed in an embodiment of the present invention;

[0035] Figure 5 Front structural diagram of the lock tongue and the first buffer member of the electric fuel tank lock proposed in an embodiment of the present invention;

[0036] Figure 6 Reverse structural diagram of the lock tongue and the first buffer member of the electric fuel tank lock proposed in an embodiment of the present invention;

[0037] Figure 7 Partial three-dimensional view of the lock body seat, damping structure, and pressing member of the electric fuel tank lock proposed in an embodiment of the present invention;

[0038] Figure 8 Partial three-dimensional view of the flipping block and the damping structure of the electric fuel tank lock proposed in an embodiment of the present invention;

[0039] Figure 9 Front structural diagram of the pressing member and the anti-retreat member of the electric fuel tank lock proposed in an embodiment of the present invention;

[0040] Figure 10 Reverse structural diagram of the pressing member and the anti-retreat member of the electric fuel tank lock proposed in an embodiment of the present invention.

[0041] Reference Numerals

[0042] 100 - Fuel tank cap assembly, 200 - Outer ring, 10 - Lock body seat, 101 - First limiting member, 20 - Pressure cover, 201 - Limiting space, 202 - Protrusion, 3 - Pin slot, 30 - First spring washer, 40 - Second spring washer, 401 - Sealing screw, 50 - Cylindrical pin, 60 - Face cover, 601 - Rotating shaft, 602 - Protrusion, 603 - Threading hole, 70 - Lock tongue, 701 - First mounting groove, 702 - Second mounting groove, 703 - First groove, 704 - Second groove, 80 - Dial cover, 801 - Driving end, 802 - Movable end, 90 - First elastic member, 110 - First buffer member, 11 - First clamping portion, 1101 - First boss, 1102 - Buffer rod, 120 - Second elastic member, 121 - Second limiting member, 131 - Flipping block, 132 - Damping structure, 1321 - Arc groove, 1322 - Damping ring, 1323 - First screw, 1324 - Washer, 1325 - Second screw, 140 - Solenoid valve, 1401 - Front rod of solenoid valve, 150 - Circuit board, 160 - Microswitch, 1601 - Dial, 17 - Anti - retreat member, 171 - Housing, 172 - Elastic plate, 173 - Blocking block, 174 - Outer groove, 175 - Fitting block, 176 - Reset block, 18 - Pressing member, 181 - Rotating groove, 182 - Rotating shaft, 183 - Circular plate, 184 - Top block, 185 - Lever. Detailed implementation manners

[0043] The following will clearly describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0044] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0045] The following will describe in detail the electric fuel tank lock provided by the embodiments of the present application with reference to the accompanying drawings and through specific embodiments and their application scenarios.

[0046] Embodiment 1:

[0047] AsFigures 1 to 6 As shown in Figures 1 to 6 , an embodiment of the present application provides an electric fuel tank lock, which includes a fuel tank cap assembly 100 and an outer ring 200. The fuel tank cap assembly 100 includes a lock body seat assembly and a functional operating mechanism in the lock body seat assembly. Among them, the lock body seat assembly includes a lock body seat 10, a gland 20, a first spring washer 30, a second spring washer 40, a cylindrical pin 50, and a face cover 60.

[0048] The functional operating mechanism installed in the fuel tank cap assembly 100 is as follows:

[0049] The lock body seat 10, and a lock tongue 70 movably installed on the lock body seat 10. The lock body seat 10 is provided with a first limiting member 101, and the lock tongue 70 is provided with a limiting space 201 that cooperates with the first limiting member 101.

[0050] Exemplarily, the first limiting member 101 is implemented as a boss fixed to the lock body seat, and the limiting space 201 is implemented as a movable groove that slidably cooperates with the boss.

[0051] A first buffer member 110 movably installed on the lock tongue 70. The first buffer member 110 includes a first clamping portion 11. The lock tongue 70 is provided with a second clamping portion 71. The first clamping portion 11 and the second clamping portion 71 are clamped and installed. The displacement of the first buffer member 110 drives the displacement of the lock tongue. That is, it horizontally displaces along the unlocking direction. The lock tongue 70 is also provided with a first installation groove 701 and a second installation groove 702.

[0052] A first elastic member 90, one end of the first elastic member 90 is fixed to the first buffer member 110, and the other end is fixed to the first installation groove 701; a second elastic member 120 and a second limiting member 121. The second elastic member 120 is installed in the second installation groove 702. The second limiting member 121 is fixed to the lock body seat 10 and one end of the second elastic member 120 is fixed to the second limiting member 121, and the other end of the second elastic member 120 is fixed to one end of the second installation groove 702; among them, the elastic force of the first elastic member 90 is greater than that of the second elastic member 120. Here, the first installation groove 701 and the second installation groove 702 are referred to as the installation spaces of the first elastic member and the second elastic member, and there is no specific limitation on the shape and structure.

[0053] A solenoid valve 140, including a solenoid valve body and a solenoid valve front rod 1401. Before the solenoid valve front rod 1401 is energized, it is in an extended state. In the extended state of the solenoid valve front rod 1401, it acts as a third limiting member to block one end in the unlocking movement direction of the lock tongue 70.

[0054] A micro switch 160, the micro switch 160 is in contact connection with the first buffer member 110 and is electrically connected to the solenoid valve 140; specifically, the dial 1601 of the micro switch 160 is in contact connection with the first buffer member 110. When the first buffer member 110 moves, the micro switch 160 can quickly respond and conduct the solenoid valve.

[0055] The face cover 60, and the dial cover 80 mounted on the face cover 60. One end of the dial cover 80 is the driving end 801, and the other end is the movable end 802. The driving end 801 drives the movable end 802 to press against the first buffer member 110. After the first buffer member 110 is pressed, it drives the lock tongue 70 to displace in the direction of the front end rod 1401 of the solenoid valve through the first elastic member 90 and the second elastic member 120. After the micro switch 160 senses the displacement state of the first buffer member 110, it energizes the solenoid valve 140, causing the front end rod 1401 of the solenoid valve to be released. That is, the front end rod 1401 of the solenoid valve in the original locked state extends out, so that the front end of the lock tongue 70 is blocked and cannot move. When the first buffer member 110 touches the micro switch 160 and is energized, the solenoid valve is attracted, and the blocking state is cancelled, thereby opening the fuel tank cover assembly 100.

[0056] Among them, the specific installation method of the dial cover 80 is: a rotating shaft 601 is provided on the face cover 60, the movable end 802 of the dial cover 80 is movably connected to the rotating shaft 601, and the movable end 802 is provided with a protrusion 602 close to the first buffer member 110. The presence of this protrusion enables the dial cover 80 to effectively press the first buffer member 110 after moving.

[0057] In a preferred solution, a protrusion 202 is provided at one end of the unlocking movement direction of the lock tongue 70, and a second groove 704 in contact connection with the front end rod 1401 of the solenoid valve is provided at the top of the protrusion 202.

[0058] Among them, the first elastic member 90 and the second elastic member 120 are implemented as a first spring and a second spring. Among them, there are two sets of springs for the second spring, and the first spring is located between the two sets of second springs; two sets of second limit members are provided corresponding to the lock body seat, and two sets of second installation grooves 7 are provided on the lock tongue.

[0059] Specifically, the first buffer member 110 includes a buffer rod 1102 and a first engaging portion 11. There are first bosses on two inner sides of the first buffer member, which can be understood that the first engaging portion 11 includes a first boss 1101. The latch 70 is configured with a first groove 703 that cooperates with the first boss 1101. The first groove 703 and the first boss 1101 are in an engaged state, and there is a buffer distance between the inner end faces of the first boss 1101 and the first groove 703 in the unlocking movement direction. The buffer rod 1102 is in a position directly receiving the pushing force. When receiving the pushing force, it triggers the microswitch at the first moment, and at the same time, it is compressed by the first elastic member and then by the second elastic member to push the latch to displace. When the latch displaces a certain distance, which reaches the buffer distance, the first engaging portion 11 and the second engaging portion 71 continue to drive the latch to move. In this way, an effective and error-free buffer mechanism is achieved. At the same time, after unlocking, the first elastic member and the second elastic member play a role in resetting. There is an existing technology that sets two groups of springs, and the latch is connected to the springs to play a buffering role. However, the disadvantages of this design are also very obvious. After the two groups of springs are pushed, they will respond quickly. Even if there is a certain buffer, the speed and response time of the latch moving forward will still be in a state where they cannot be perfectly matched, resulting in jamming. The setting of the first elastic member in this solution, combined with the buffer distance between the first boss and one end face of the first groove, well solves this problem. At the same time, due to the greater elastic force of the second elastic member, the reset ability after unlocking is also guaranteed.

[0060] The fuel tank cap assembly 100 further includes a circuit board. The solenoid valve and the microswitch are electrically connected through the circuit board. The solenoid valve 140 and the circuit board 150 have a waterproof potting structure. The solenoid valve 140, the circuit board 150, etc. are potted at the waterproof parts, which is more reliable in waterproofing than the rubber dot pads of traditional fuel tank locks.

[0061] The gland 20 is installed on the fuel tank. A first spring washer 30 is installed on the upper surface of the gland 20, and a second spring washer 40 provided at the bottom of the lock body seat is engaged with the first spring washer 30. The spring washers disclosed here are considered to be elastic sealing rings that play a sealing role. It includes a general spring washer and a sealing ring. The thickness of the general spring washer is generally 0.3 mm, usually made of metal 65Mn or a spring washer made by a heat treatment process of stainless steel, which is not easily damaged and has better corrosion resistance; the sealing ring is generally made of rubber material and has better sealing performance. At the same time, the encapsulation structure of the lock body seat and the face cover in this application may affect the encapsulation screws 401 when the oil vapor rises upward, or enter the interior of the fuel tank cap assembly 100 from the encapsulation screws 401. The gasket structure is adopted, and its coverage area is wider than that of the sealing ring, and it can directly wrap the screw part, which well solves the sealing problem.

[0062] Fixed to the outer ring 200 of the fuel tank, there is a locking tongue groove on one side of the outer ring 200. When locked, the locking tongue 70 is located in the locking tongue groove. On the other side of the outer ring 200, a hinge structure is provided which is rotatably connected to one side of the fuel tank cover assembly 100.

[0063] The hinge structure includes a cylindrical pin 50 arranged on the outer ring 200 and a pin groove 3 arranged on the fuel tank cover assembly 100 and cooperating with the cylindrical pin 50.

[0064] The cylindrical pin 50 is hollow, and a connection hole is provided on one side in the middle; a wire passing hole 603 is arranged on the lock body base 10. One end of the wire passing hole 603 communicates with the pin groove 3 and cooperates with the inner cavity of the cylindrical pin 50 for passing a wire harness.

[0065] The hinge structure further includes a flipping block 131 installed on the fuel tank cover assembly 100, movably installed in the lock body base 10, connected to the fuel tank cover assembly 100 at one end, and connected to the cylindrical pin 50 through the pin groove 3 at the other end; a pair of damping structures 132 are respectively arranged between both sides of the flipping block 131 and the inner walls of both sides of the lock body base 10 to provide a damping force when the flipping block 131 flips.

[0066] Each of the pair of damping structures 132 includes an arc groove 1321 arranged on the side wall of the lock body base 10, and the arc groove 1321 is concentric with the axis of the cylindrical pin 50; a damping ring 1322 arranged in the arc groove 1321; a first screw 1323 which passes through the damping ring 1322 and is connected to the flipping block 131 through a screw hole, and a spring is installed between the outer end and the outer side wall of the damping ring 1322; a washer 1324 is arranged between the spring and the outer side wall of the damping ring 1322; a second screw 1325 which is installed on the front side of the lock body base 10 through an installation hole, and the installation hole communicates with the arc groove 1321. Tightening the second screw 1325 can compensate for the wear of the inner ring of the damping ring 1322;

[0067] Wherein, the inner side wall of the damping ring 1322 has a sliding friction with the outer side wall of the flipping block 131, and the middle section of the screw has a sliding friction with the inner ring of the damping ring 1322.

[0068] In actual use, the user can adjust the tightening degrees of the first screw 1323 and the second screw 1325 according to their own needs to obtain a damping feel with different forces.

[0069] The hinge structure further includes a pair of anti-retreat members 17, which are arranged between the turning block 131 and both sides of the lock body seat 10 to prevent the fuel tank cover assembly 100 from closing outward. Each of them includes a housing 171 embedded in the inner side wall of the lock body seat 10 through an inner groove. The top and one end of the housing 171 are open, and an elastic plate 172 is arranged on the inner side wall of the other end. The elastic plate 172 extends along the inner cavity of the housing 171, and several blocking blocks 173 are arranged on the top. One side of the blocking block 173 facing the inner end side wall of the lock body seat 10 is a plane, and the other side is an inclined plane; a pair of outer grooves 174 are symmetrically arranged on the opposite side walls of the turning block 131, corresponding to the respective inner grooves, and several mating blocks 175 are arranged inside. One side of each mating block 175 facing the inner end side wall of the lock body seat 10 is an inclined plane, and the other side is a plane; a pair of reset blocks 176 are symmetrically fixed inside the other end of the turning block 131, and the turning block 131 is also U-shaped; a pair of pressing members 18 are rotatably installed at one end of the inner groove and cooperate with the corresponding outer grooves 174 and reset blocks 176 to press the free ends of the respective elastic plates 172 when the fuel tank cover assembly 100 needs to be closed, so that the respective blocking blocks 173 are separated from the respective mating blocks 175, and they are reset after the fuel tank cover assembly 100 is closed.

[0070] When the fuel tank cover assembly 100 is opened (when it is turned clockwise), the inclined planes of the respective blocking blocks 173 face the inclined planes of the respective mating blocks 175. When the fuel tank cover assembly 100 needs to be closed (when it is turned counterclockwise), the planes of the respective blocking blocks 173 face the planes of the respective mating blocks 175, so that after the fuel tank cover assembly 100 is fully opened, it cannot be directly closed, preventing the fuel tank cover assembly 100 from being closed due to accidental touch.

[0071] The pressing member 18 includes a rotating groove 181, which is arranged at one end of the inner groove, and a rotating shaft 182 is rotatably installed inside. A circular plate 183 is fixed at the upper end of the rotating shaft 182; a top block 184 is arranged on one side of the bottom surface of the circular plate 183, and both end surfaces of the top block 184 are inclined; a lever 185 is arranged on one side of the top surface of the circular plate 183. Before closing the fuel tank cover assembly 100, the fuel tank cover assembly 100 is pulled in the opening direction, so that the inner end of the outer groove 174 pulls the lever 185, and the top block 184 presses the free end of the elastic plate 172 downward, separating the respective blocking blocks 173 and the respective mating blocks 175. Then the fuel tank cover assembly 100 is pulled in the closing direction to complete the closing, and the reset block 176 pulls the lever 185, the top block 184 disengages from the elastic plate 172, and the elastic plate 172 is reset.

[0072] The rotating groove 181 communicates with one end of the inner groove. The free end of the elastic plate 172 is provided with a recess. One side of the circular plate 183 is slidably matched with the recess. The two sides of the corresponding end of the housing 171 are also provided with notches for slidably matching with the circular plate 183 and the top block 184, so that the top block 184 can enter and exit the inner cavity of the housing 171 and cooperate with the recess at the free end of the elastic plate 172 to press the free end of the elastic plate 172 to sink.

[0073] Before the fuel tank cap assembly 100 needs to be closed, it is first flipped in the opening direction, so that the inner end of the outer groove 174 on the flipping block 131 pushes the lever 185, controls the rotation of the circular plate 183, makes the top block 184 rotate towards the elastic plate 172, and pushes the free end of the elastic plate 172 into the housing 171. When the fuel tank cap assembly 100 is completely closed, the reset block 176 pushes the lever 185, the circular plate 183 rotates in reverse, the top block 184 moves away from the elastic plate 172, and the elastic plate 172 resets under its own elasticity.

[0074] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0075] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. An electric fuel tank lock, characterized in that: The fuel tank cover assembly includes the following structure: A lock body seat, and a lock tongue movably mounted on the lock body seat, wherein the lock body seat is provided with a first limiting piece, and the lock tongue is provided with a limiting space cooperating with the first limiting piece; A first buffer member movably mounted on the lock tongue, the first buffer member comprising a first embracing portion, the lock tongue being provided with a second embracing portion, the first embracing portion and the second embracing portion being mounted in an embracing manner, and the displacement of the first buffer member drives the displacement of the lock tongue; The lock tongue is also provided with a first mounting groove and a second mounting groove; A first elastic member, one end of the first elastic member is fixed to the first buffer member, and the other end of the first elastic member is fixed to the first mounting groove; A second elastic member and a second limiting member, wherein the second elastic member is installed in the second installation groove, the second limiting member is fixed to the lock body seat, one end of the second elastic member is fixed to the second limiting member, and the other end of the second elastic member is fixed to one end of the second installation groove; wherein the elastic force of the first elastic member is greater than that of the second elastic member; It also includes an unlocking component, which is used to move the first buffer member to push the lock tongue to retract into the lock body seat; It also includes an outer ring fixed to the fuel tank, one side of the outer ring is provided with a lock tongue groove, when locked, the lock tongue is located in the lock tongue groove, and the other side of the outer ring is provided with a hinge structure rotatably connected to one side of the fuel tank cover assembly; The hinge structure includes a cylindrical pin arranged on the outer ring, and a pin groove arranged on the fuel tank cover assembly and matched with the cylindrical pin; The cylindrical pin is hollow, and a connecting hole is provided on one side of the middle part; a threading hole is provided on the lock body seat, one end of the threading hole is connected to the pin groove, and cooperates with the inner cavity of the cylindrical pin for threading the wire harness; The hinge structure also includes a flip block mounted on the fuel tank cover assembly, movably mounted in the lock body seat, one end of which is connected to the fuel tank cover assembly, and the other end of which is connected to the cylindrical pin through a pin groove; a first damping structure and a second damping structure, which are respectively arranged between the two sides of the flip block and the inner walls of the two sides of the lock body seat, and provide damping force when the flip block flips; The first damping structure and the second damping structure both include an arc groove arranged on the side wall of the lock body seat, the arc groove being concentric with the axis of the cylindrical pin; a damping ring arranged in the arc groove; a first screw, which passes through the damping ring and is connected to the flip block through a screw hole, and a spring is installed between the outer end and the outer wall of the damping ring; a washer is provided between the spring and the outer wall of the damping ring; a second screw, which is installed on the front side of the lock body seat through a mounting hole, the mounting hole is connected to the arc groove, and tightening the second screw can compensate for the wear of the inner ring of the damping ring; The inner side wall of the damping ring and the outer side wall of the flip block are in sliding friction, and the middle section of the first screw and the inner ring of the damping ring are in sliding friction.

2. The electric fuel tank lock according to claim 1, characterized in that: The unlocking component includes a solenoid valve, including a solenoid valve body and a front end rod of the solenoid valve. The front end rod of the solenoid valve is in an extended state before being energized, and in the extended state, the front end rod of the solenoid valve acts as a third limiter to block one end of the unlocking movement direction of the lock tongue; A micro switch, the micro switch is in contact with and connected to the first buffer member, and is electrically connected to the solenoid valve; A face cover and a prying cover installed on the face cover, one end of the prying cover is a driving end and the other end is a movable end, the driving end drives the movable end to push the first buffer member, after the first buffer member is pushed, the first elastic member and the second elastic member drive the lock tongue to move toward the front end rod direction of the solenoid valve, and the micro switch senses the displacement state of the first buffer member and energizes the solenoid valve to release the front end rod of the solenoid valve.

3. The electric fuel tank lock according to claim 1, characterized in that: The first buffer member has two first bosses on its inner side, and the lock tongue is provided with a first groove matched with the first boss. The first groove and the first boss are in an embraced state, and there is a buffer distance between the inner end faces of the first boss and the first groove in the unlocking movement direction.

4. The electric fuel tank lock according to claim 1, characterized in that: A protrusion is arranged at one end of the lock tongue in the unlocking movement direction, and a second groove which is in contact with and connected to the front end rod of the electromagnetic valve is arranged at the top end of the protrusion.

5. The electric fuel tank lock according to claim 2, characterized in that: The surface cover is provided with a rotating shaft, the movable end of the cover is movably connected to the rotating shaft, and the movable end is provided with a protrusion close to the first buffer member.

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