Anti-jamming unlocking type electronic lock

Abstract

A translation assembly is installed on the right side in a shell, an unlocking block is connected to the left portion of the translation assembly and slidably connected with the shell, the rear portion of the unlocking block makes contact with a signal switch, and a boss is connected to the left end of the unlocking block. The translation assembly, the mechanical switch, the signal switch, the unlocking button and other parts are integrally designed in the body, under the condition that the unlocking block is pressed downwards and clamped, the translation assembly is used for driving the unlocking block to move rightwards and reset, the lock rod can be pressed, the lock rod plays an emergency unlocking role, the silica gel cap is arranged on the unlocking button, and the unlocking button can be locked through the silica gel cap. The electric gun hook can play a role in preventing raining, freezing and sand dust in severe weather such as rainy season or freezing, the situation that an unlocking button is frozen and cannot be pressed down is prevented, the separation type design of a mechanical switch and an electronic lock in the market is improved through an integrated design mode, the installation precision of the electric gun hook can be reduced, and deformation and damage of the electric gun hook are prevented; and the waterproof and anti-icing performance is improved.

Description

Technical Field

[0001] The invention relates to the technical field of electronic locks, in particular to an anti-stuck unlocking electronic lock. Background Art

[0002] There are more and more new energy vehicles. In order to ensure the safety of people, vehicles and charging piles during charging, the charging gun needs to have certain protection functions. When the charging gun is plugged in, an electronic lock is needed to prevent the charging gun from being accidentally disconnected.

[0003] At present, during the charging process, the charging gun sinks due to the gravity pulling force of the wire, so the unlocking mechanism will change, resulting in the unlocking block being stuck, affecting the removal of the charging gun. Figure 6 As shown, the mechanical switch and the electronic lock rotating block are leaking, and the waterproof and anti-icing performance is poor. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an anti-stuck unlocking electronic lock to solve the problems raised in the above background technology.

[0005] An anti-stuck unlocking electronic lock comprises a charging gun body and a charging gun hook rotatably connected to the upper part thereof, a shell is embedded and fixed inside the charging gun body, a signal switch and a mechanical switch are installed on the left rear side of the shell, the mechanical switch is located on the left side of the signal switch, a translation assembly is installed on the right side of the shell, an unlocking block is connected to the left part of the translation assembly, the unlocking block is slidably connected to the shell, the rear part of the unlocking block contacts the signal switch, a boss is connected to the left end of the unlocking block, a locking rod is connected to the left end of the boss, the end of the locking rod movably penetrates the shell and the charging gun body, an unlocking button movably penetrates the shell is provided on the upper part of the boss, a reset spring 1 is connected to the two sides of the lower part of the unlocking button, and the rear part of the unlocking button contacts the mechanical switch.

[0006] Furthermore, the translation assembly includes a planetary gear motor, a screw and a screw nut, the planetary gear motor is fixedly mounted on the housing, the screw is connected to the output end of the planetary gear motor, the screw nut is slidably connected inside the unlocking block, and the end of the screw moves through the inside of the unlocking block and is threadedly connected to the screw nut.

[0007] Furthermore, a second return spring is connected between the right end of the screw nut and the inner wall of the unlocking block.

[0008] Furthermore, a convex edge is connected to the rear end of the unlocking block, and the top of the convex edge contacts the button at the bottom of the signal switch.

[0009] Furthermore, the upper end of the boss is in close contact with the lower end of the unlocking button.

[0010] Furthermore, a pressure plate is connected to the rear end of the unlocking button, and the top of the pressure plate contacts the button at the bottom of the mechanical switch.

[0011] Furthermore, a silicone cap is sleeved on the upper part of the unlocking button and located at the upper end of the shell, the bottom of the silicone cap is in close contact with the top of the shell, and the top of the unlocking button is fixed to the top of the inside of the silicone cap.

[0012] Configure the key nodes of the unlocking block, including the steps:

[0013] S1. Data collection, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and the time t of triggering the signal switch signal , the time t to trigger the mechanical switch mech ;

[0014] S2. Predict the signal switch trigger time t through the motion model of the unlocking block signal and mechanical switch triggering time t mech ;

[0015] Among them, the motion model of the unlocking block is:

[0016]

[0017] Where x(t) represents the change of the position of the unlocking block over time, x0 represents the initial position of the unlocking block, v represents the moving speed of the unlocking block, and a represents the acceleration of the unlocking block;

[0018] S3. Extract features from the original data, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and set the target variable to the signal switch trigger time t signal and mechanical switch triggering time t mech ;

[0019] S4. Use the linear regression model to predict t signal and t mech :

[0020] t signal =β0+β1x0+β2v+β3a;

[0021] t mech =γ0+γ1x0+γ2v+γ3a

[0022] Use the least squares method to solve for the model parameters β and γ:

[0023]

[0024]

[0025] Where:

[0026] β0 is the intercept term of the signal switch trigger time model; β1 is the coefficient of the initial position x0 in the signal switch trigger time model; β2 is the coefficient of the moving speed v in the signal switch trigger time model; β3 is the coefficient of the acceleration a in the signal switch trigger time model; γ0 is the intercept term of the mechanical switch trigger time model; γ1 is the coefficient of the initial position x0 in the mechanical switch trigger time model; γ2 is the coefficient of the moving speed v in the mechanical switch trigger time model; γ3 is the coefficient of the acceleration a in the mechanical switch trigger time model; is the actual triggering time of the signal switch in the i-th group of data; is the actual triggering time of the mechanical switch in the i-th group of data; is the initial position of the unlocked block in the i-th group of data; is the moving speed of the unlocked block in the i-th group of data; a (i) is the acceleration of the unlocked block in the i-th group of data; N is the number of samples in the data set;

[0027] S4. Divide the dataset into a training set and a test set, with a ratio of 80% training set and 20% test set, and use the test set data to verify the prediction accuracy of the model:

[0028] Calculate t signal and t mech The mean square error (MSE) between the predicted value and the actual value is:

[0029]

[0030]

[0031] S5. Reset the trigger points of the signal switch and mechanical switch according to the model prediction results:

[0032] Calculate the position x of the signal switch trigger point signal :

[0033]

[0034] Calculate the position x of the mechanical switch trigger point mech :

[0035]

[0036] The beneficial effects of the present invention are as follows: the anti-stuck unlocking electronic lock integrates the components such as the translation assembly, the mechanical switch, the signal switch and the unlocking button into an integrated design inside the body. When the unlocking block is pressed down and stuck, the translation assembly can be used to drive the unlocking block to move right and reset. The translation assembly can be a motor to drive the lead screw to rotate, so that the lead screw nut moves right inside the unlocking block to push the unlocking block. A reset spring 2 can also be provided on the right part of the lead screw nut to push the unlocking block to move right after compression. The lock rod can be pressed, and the lock rod plays an emergency unlocking role. In this way, the unlocking block is prevented from getting stuck during the process of human hand touching to draw the gun. Moreover, a silicone cap is provided on the unlocking button to prevent rain, ice, dust and sand in bad weather such as rainy season or freezing, and prevent the unlocking button from freezing and being unable to be pressed down. The integrated design improves the existing design of the separate mechanical switch and the electronic lock on the market, avoids the problems of high precision requirements for the installation data of the electric gun hook, deformation and damage of the charging gun hook, and poor waterproof and anti-icing performance leading to poor working of the charging gun.

[0037] This application also optimizes the trigger points of signal switches and mechanical switches through mathematical models and big data analysis, ensuring accurate signal transmission, improving the interaction efficiency between electronic locks and control systems, and reducing the possibility of false triggering. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is an overall schematic diagram of the present invention;

[0039] Figure 2 This is a schematic diagram of the present invention after the charging gun body and the charging gun hook are removed;

[0040] Figure 3 This is a schematic diagram of the present invention after the bottom shell and the top cover are removed;

[0041] Figure 4 For the present invention Figure 3 Schematic diagram of the rear part;

[0042] Figure 5 This is a schematic diagram of the bottom of the unlocking block of the present invention;

[0043] Figure 6 It is a schematic diagram of the prior art.

[0044] In the figure: 1-charging gun body, 2-charging gun hook, 3-locking rod, 4-housing, 5-unlocking button, 6-planetary gear motor, 7-screw, 8-unlocking block, 9-reset spring 1, 10-mechanical switch, 11-signal switch, 12-convex edge, 13-pressure plate, 14-screw nut, 15-reset spring 2, 16-boss. DETAILED DESCRIPTION

[0045] See also Figure 1-Figure 5, an anti-stuck unlocking electronic lock, comprising a charging gun body 1 and a charging gun hook 2 rotatably connected to the upper part thereof, a shell 4 is embedded and fixed inside the charging gun body 1, a signal switch 11 and a mechanical switch 10 are installed on the left rear side of the shell 4, the mechanical switch 10 is located on the left side of the signal switch 11, a translation assembly is installed on the right side of the shell 4, an unlocking block 8 is connected to the left part of the translation assembly, the unlocking block 8 is slidably connected to the shell 4, the translation assembly comprises a planetary gear motor 6, a screw rod 7 and a screw nut 14, the planetary gear motor 6 is fixedly installed with the shell 4, the screw rod 7 is connected to the output end of the planetary gear motor 6, and the screw nut 14 is slidably connected to the unlocking Inside the block 8, the end of the screw rod 7 movably penetrates into the unlocking block 8 and is threadedly connected to the screw nut 14. Through the planetary gear motor 6, the screw rod 7 can be driven to rotate forward or reverse. As the screw rod 7 rotates forward and cooperates with the screw nut 14 thread, the screw nut 14 moves left inside the unlocking block 8, so that the screw nut 14 can directly push the unlocking block 8 to move left. When the screw rod 7 is reversed and threadedly cooperates with the screw nut 14, the screw nut 14 moves right inside the unlocking block 8, so that the screw nut 14 can directly push the unlocking block 8 to move right. In addition, the translation component can also be a telescopic device such as an electric push rod. This type of telescopic device is that the output end is directly fixed to the unlocking block 8 to drive the unlocking block 8 to translate left and right;

[0046] A second return spring 15 is connected between the right end of the screw nut 14 and the inner wall of the unlocking block 8. By arranging the second return spring 15 between the right end of the screw nut 14 and the inner wall of the unlocking block 8, when the screw nut 14 moves to the right, the second return spring 15 can be squeezed to make the second return spring 15 generate a compression force, so that the second return spring 15 can push the unlocking block 8 to move to the right;

[0047] The rear portion of the unlocking block 8 contacts the signal switch 11, and a convex edge 12 is connected to the rear end of the unlocking block 8, and the top of the convex edge 12 contacts the button at the bottom of the signal switch 11. The left end of the unlocking block 8 is connected to a boss 16, and the left end of the boss 16 is connected to a locking rod 3. The end of the locking rod 3 movably penetrates the shell 4 and the charging gun body 1, and an unlocking button 5 movably penetrates the shell 4 is provided on the upper portion of the boss 16. The upper end of the boss 16 is tightly attached to the lower end of the unlocking button 5, and reset springs 9 are connected to both sides of the lower portion of the unlocking button 5. The rear portion of the unlocking button 5 contacts the mechanical switch 10, and a pressure plate 13 is connected to the rear end of the unlocking button 5. The top of the plate 13 contacts the button at the bottom of the mechanical switch 10. When the unlocking block 8 moves to the left, the convex edge 12 at the rear of the unlocking block 8 triggers the signal switch 11. The signal switch 11 sends a locked signal. At the same time, the unlocking block 8 drives the boss 16 and the locking rod 3 to move left. The boss 16 is located below the unlocking button 5, so that the unlocking button 5 cannot be pressed down, and the unlocking button 5 is locked. In this way, the locking is completed. In this way, the pressure plate 13 behind the unlocking button 5 presses the mechanical switch 10 tightly, keeping the mechanical switch 10 long closed signal. At the same time, the locking rod 3 moves to the left and passes through the charging gun body 1. The purpose of the locking rod 3 is emergency unlocking, which is convenient for pressing the locking rod 3 to the right to move the boss 16 away from under the unlocking button 5.

[0048] A silicone cap is provided on the upper part of the unlocking button 5 and located at the upper end of the shell 4. The bottom of the silicone cap is in close contact with the top of the shell 4, and the top of the unlocking button 5 is fixed to the top inside the silicone cap. By providing the silicone cap on the unlocking button 5, it can play a waterproof role in some cold weather in the rainy season and prevent the unlocking button 5 from freezing and being unable to be pressed down. When the unlocking button 5 is pressed down normally, the lower part of the silicone cap can be deformed, so it does not affect the use of the unlocking button 5.

[0049] Working principle: When the charging gun body 1 is inserted into the car charging port and the charging gun hook 2 is used to hang the car charging port, when locking, the planetary gear motor 6 drives the screw 7 to rotate forward, and as the screw 7 rotates forward, it cooperates with the screw nut 14 thread, so that the screw nut 14 moves left inside the unlocking block 8, so that the screw nut 14 can directly push the unlocking block 8 to move left, so that the convex edge 12 at the rear of the unlocking block 8 triggers the signal switch 11, and at the same time, the unlocking block 8 drives the boss 16 and the locking rod 3 to move left, and the boss 16 is located below the unlocking button 5, so that the unlocking button 5 cannot be pressed down, which is conducive to unlocking. The button 5 is locked, so that the pressure plate 13 behind the unlocking button 5 presses the mechanical switch 10 tightly, keeping the mechanical switch 10 long closed signal, thus completing the locking. When unlocking is required, the screw rod 7 is reversed and threadedly matched with the screw nut 14, so that the screw nut 14 moves right inside the unlocking block 8 and squeezes the reset spring 2 15, so that the reset spring 2 15 generates a compression force, so that the reset spring 2 15 can push the unlocking block 8 to move right. In this way, when the unlocking block 8 triggers the signal switch 11, the boss 16 disengages from the unlocking button 5, and the unlocking button 5 can be pressed down to complete the unlocking.

[0050] In order to ensure that the signal switch and the mechanical switch can be triggered at the appropriate time to correctly feedback the lock status to the control system, this application defines the key point design in the unlocking block movement path through mathematical models and data analysis to ensure that the switch can be accurately triggered when the unlocking block reaches a specific position. The following is a specific implementation method:

[0051] Configure the key nodes of the unlocking block, including the steps:

[0052] S1. Data collection, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and the time t of triggering the signal switch signal , the time t to trigger the mechanical switch mech ;

[0053] In an embodiment, the collected data should cover the unlocking block moving speed, acceleration, and time required to trigger the switch under different operating conditions. These conditions include, but are not limited to, temperature changes, humidity differences, different charging gun weights, and different types of external interference (such as the pulling force of the wire). These data are collected by sensors installed on the electronic lock, which can monitor the position, speed and acceleration of the unlocking block, as well as environmental factors such as temperature and humidity. In order to ensure the accuracy of the model, a large number of data samples need to be collected. Each sample should contain a complete process record of the unlocking block from the beginning to the final position. Remove outliers and erroneous data from the collected data samples to ensure the accuracy of subsequent analysis. Extract useful features from the raw data, such as average moving speed, maximum acceleration, and time point to trigger the switch. Use statistical methods and machine learning algorithms to analyze the data to find out the influence of different conditions on the movement of the unlocking block. For example, a relationship model between the moving speed of the unlocking block and the triggering time can be established by regression analysis.

[0054] S2. Predict the signal switch trigger time t through the motion model of the unlocking block signal and mechanical switch triggering time t mech ;

[0055] Among them, the motion model of the unlocking block is:

[0056]

[0057] Where x(t) represents the change of the position of the unlocking block over time, x0 represents the initial position of the unlocking block, v represents the moving speed of the unlocking block, and a represents the acceleration of the unlocking block;

[0058] S3. Extract features from the original data, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and set the target variable to the signal switch trigger time t signal and mechanical switch triggering time t mech ;

[0059] S4. Use the linear regression model to predict t signal and t mech :

[0060] t signal =β0+β1x0+β2v+β3a;

[0061] t mech =γ0+γ1x0+γ2v+γ3a

[0062] Use the least squares method to solve for the model parameters β and γ:

[0063]

[0064]

[0065] Where:

[0066] x0 represents the initial position of the unlocking block, v represents the moving speed of the unlocking block, and a represents the acceleration of the unlocking block; β0 is the intercept term of the signal switch trigger time model; β1 is the coefficient of the initial position x0 in the signal switch trigger time model; β2 is the coefficient of the moving speed v in the signal switch trigger time model; β3 is the coefficient of the acceleration a in the signal switch trigger time model; γ0 is the intercept term of the mechanical switch trigger time model; γ1 is the coefficient of the initial position x0 in the mechanical switch trigger time model; γ2 is the coefficient of the moving speed v in the mechanical switch trigger time model; γ3 is the coefficient of the acceleration a in the mechanical switch trigger time model; is the actual triggering time of the signal switch in the i-th group of data; is the actual triggering time of the mechanical switch in the i-th group of data; is the initial position of the unlocked block in the i-th group of data; is the moving speed of the unlocked block in the i-th group of data; a (i) is the acceleration of the unlocked block in the i-th group of data; N is the number of samples in the data set;

[0067] S4. Divide the dataset into a training set and a test set, with a ratio of 80% training set and 20% test set, and use the test set data to verify the prediction accuracy of the model:

[0068] Calculate t signal and t mech The mean square error (MSE) between the predicted value and the actual value is:

[0069]

[0070]

[0071] S5. Reset the trigger points of the signal switch and mechanical switch according to the model prediction results:

[0072] Calculate the position x of the signal switch trigger point signal :

[0073]

[0074] Calculate the position x of the mechanical switch trigger point mech :

[0075]

[0076] The established mathematical model and the determined key nodes need to be verified by experiments. During implementation, multiple tests are performed to observe whether the actual trigger point is consistent with the model prediction. If not, the model parameters are adjusted according to the actual situation until the model can accurately predict the actual trigger behavior.

[0077] Once the model is verified and deemed reliable, it can be applied to the design of electronic locks. In actual products, a microprocessor can be set to monitor the movement of the unlocking block and automatically adjust the trigger points of the signal switch and mechanical switch according to the preset mathematical model to ensure that the lock status can be accurately fed back to the control system under various conditions.

[0078] Through this method, not only can the signal switch and the mechanical switch be triggered at the appropriate time, but also the robustness of the system and the user experience can be improved, making the anti-stuck unlocking electronic lock more intelligent and efficient.

Claims

1. An anti-stuck unlocking electronic lock, comprising a charging gun body (1) and a charging gun hook (2) rotatably connected to the upper part thereof, wherein a housing (4) is embedded and fixed inside the charging gun body (1), and a signal switch (11) and a mechanical switch (10) are installed on the left rear side inside the housing (4), wherein the mechanical switch (10) is located on the left side of the signal switch (11), and is characterized in that: A translation assembly is installed on the right side of the shell (4), and an unlocking block (8) is connected to the left part of the translation assembly. The unlocking block (8) is slidably connected to the shell (4), and the rear part of the unlocking block (8) contacts the signal switch (11). The left end of the unlocking block (8) is connected to a boss (16), and the left end of the boss (16) is connected to a locking rod (3). The end of the locking rod (3) is movably penetrated by the shell (4) and the charging gun body (1), and an unlocking button (5) movably penetrated by the shell (4) is provided on the upper part of the boss (16). Reset springs (9) are connected to the lower sides of the unlocking button (5), and the rear part of the unlocking button (5) contacts the mechanical switch (10).

2. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: The translation assembly comprises a planetary gear motor (6), a screw (7) and a screw nut (14); the planetary gear motor (6) is fixedly mounted on the housing (4); the screw (7) is connected to the output end of the planetary gear motor (6); the screw nut (14) is slidably connected inside the unlocking block (8); and the end of the screw (7) movably penetrates into the unlocking block (8) and is threadedly connected to the screw nut (14).

3. The anti-stuck unlocking electronic lock according to claim 2, characterized in that: A second return spring (15) is connected between the right end of the screw nut (14) and the inner wall of the unlocking block (8).

4. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: The rear end of the unlocking block (8) is connected to a convex edge (12), and the top of the convex edge (12) contacts a button at the bottom of the signal switch (11).

5. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: The upper end of the boss (16) is in close contact with the lower end of the unlocking button (5).

6. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: The rear end of the unlocking button (5) is connected to a pressing plate (13), and the top of the pressing plate (13) contacts a button at the bottom of the mechanical switch (10).

7. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: A silicone cap is sleeved on the upper part of the unlocking button (5) and located on the upper end of the shell (4); the bottom of the silicone cap is in close contact with the top of the shell (4); and the top of the unlocking button (5) is fixed to the top of the inside of the silicone cap.

8. The anti-stuck unlocking electronic lock according to claim 1, characterized in that: Configure the key nodes of the unlocking block, including the steps: S1. Data collection, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and the time t of triggering the signal switch signal , the time t to trigger the mechanical switch mech ; S2. Predict the signal switch trigger time t through the motion model of the unlocking block signal and mechanical switch triggering time t mech ; Among them, the motion model of the unlocking block is: Where x(t) represents the change of the position of the unlocking block over time, x0 represents the initial position of the unlocking block, v represents the moving speed of the unlocking block, and a represents the acceleration of the unlocking block; S3. Extract features from the original data, including the initial position x0 of the unlocking block, the moving speed v of the unlocking block, the acceleration a, and set the target variable to the signal switch trigger time t signal and mechanical switch triggering time t mech ; S4. Use the linear regression model to predict t signal and t mech : Use the least squares method to solve for the model parameters β and γ: Where: β0 is the intercept term of the signal switch trigger time model; β1 is the coefficient of the initial position x0 in the signal switch trigger time model; β2 is the coefficient of the moving speed v in the signal switch trigger time model; β3 is the coefficient of the acceleration a in the signal switch trigger time model; γ0 is the intercept term of the mechanical switch trigger time model; γ1 is the coefficient of the initial position x0 in the mechanical switch trigger time model; γ2 is the coefficient of the moving speed v in the mechanical switch trigger time model; γ3 is the coefficient of the acceleration a in the mechanical switch trigger time model; is the actual triggering time of the signal switch in the i-th group of data; is the actual triggering time of the mechanical switch in the i-th group of data; is the initial position of the unlocked block in the i-th group of data; is the moving speed of the unlocked block in the i-th group of data; a (i) is the acceleration of the unlocked block in the i-th group of data; N is the number of samples in the data set; S4. Divide the dataset into a training set and a test set, with a ratio of 80% training set and 20% test set, and use the test set data to verify the prediction accuracy of the model: Calculate t signal and t mech The mean square error (MSE) between the predicted value and the actual value is: S5. Reset the trigger points of the signal switch and mechanical switch according to the model prediction results: Calculate the position x of the signal switch trigger point signal : Calculate the position x of the mechanical switch trigger point mech :

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