Door locking device for freight car compartment

Abstract

The present invention provides a door locking device for a truck compartment, comprising a lock rod rotatably arranged on the compartment door, a lock tongue and a lock body, wherein a main control unit, a communication unit, an electric bolt and a lock tongue detection unit are arranged in the lock body, wherein the main control unit is connected to a user control end through the communication unit, and the main control unit is also electrically connected to the electric bolt and the lock tongue detection unit respectively; one end of the lock tongue is arranged on the lock rod, a lock groove is arranged on the lock body corresponding to the lock tongue, and pin holes are respectively opened on the lock groove and the other end of the lock tongue corresponding to the electric bolt; an identifiable module is arranged on the lock tongue corresponding to the lock tongue detection unit. The door locking device for a truck compartment has the advantages of being safe and convenient to use and effectively preventing cheating.

Description

Technical Field

[0001] The invention relates to a door locking device for a freight car compartment. Background Art

[0002] Vans are an important tool for logistics transportation. The current door locking method of vans mostly adopts a locking rod that can rotate around an axis on the door, and a wrench that can rotate up and down is provided on the locking rod. Lock holes are provided on the wrench and the door accordingly. After the locking rod is rotated to a certain angle, the two ends of the locking rod cooperate with the limiting structure on the car body to make the door unable to be opened. At this time, the lock hole on the wrench is aligned with the lock hole on the door. A padlock is inserted into the lock hole to lock the wrench and the door, so that the locking rod cannot rotate, that is, the door cannot be opened.

[0003] At present, there are cases where transport personnel open padlocks privately, illegally obtain the transported materials or replace the transported materials, and ordinary padlocks cannot guarantee the safety of transported goods. At present, some use electronic padlocks to monitor the transportation of goods by monitoring the locking status of electronic padlocks. However, electronic padlocks still have some defects. For example, after a van leaves the storage area, it needs to unload the goods at destination A first, and then unload the goods at destination B. After unloading at destination A, it may be that only the electronic padlock is locked but the door is not locked, that is, the padlock is locked without inserting the electronic padlock into the keyhole. It cannot play an effective monitoring role and ensure the safety of goods. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the present invention proposes a door locking device for a truck compartment.

[0005] A door locking device for a truck compartment comprises a lock rod rotatably arranged on the compartment door, a lock tongue and a lock body, wherein a main control unit, a communication unit, an electric bolt and a lock tongue detection unit are arranged in the lock body, wherein the main control unit is connected to a user control end via the communication unit, and the main control unit is also electrically connected to the electric bolt and the lock tongue detection unit respectively; one end of the lock tongue is arranged on the lock rod, a lock groove is arranged on the lock body corresponding to the lock tongue, and pin holes are respectively opened on the lock groove and the other end of the lock tongue corresponding to the electric bolt; and an identifiable module is arranged on the lock tongue corresponding to the lock tongue detection unit.

[0006] Based on the above, an anti-disassembly detection unit is further provided in the lock body, and the anti-disassembly detection unit is electrically connected to the main control unit.

[0007] Based on the above, it also includes a door detection unit, which is electrically connected to the main control unit; the door detection unit is arranged on one door, and a door identification unit is correspondingly arranged on the other door.

[0008] Based on the above, the lock tongue detection unit includes a lock tongue detection circuit and a lock tongue detection magnetic sensor, the identifiable module is a plurality of magnets with different polarities arranged according to a certain rule, and the lock tongue detection magnetic sensor is arranged in the lock body corresponding to the magnet; the lock tongue detection circuit includes resistors R3, resistors R7 and resistors R10, one end of the resistor R3 is connected to the power supply +3V3, the other end of the resistor R3 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 4 of terminal P10, one end of the resistor R7 is connected to the power supply +3V3, the other end of the resistor R7 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 3 of terminal P10, one end of the resistor R10 is connected to the power supply +3V3, the other end of the resistor R10 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 2 of terminal P10.

[0009] Based on the above, the anti-dismantling detection unit is an anti-dismantling detection circuit, including a resistor R29, a resistor R43, a photoresistor R44 and a MOS tube Q1, the gate of the MOS tube Q1 is connected to the power supply +5V through the photoresistor R44 and is grounded through the resistor R43, the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is connected to the power supply +3V3 through the resistor R29, and the drain of the MOS tube Q1 is also connected to the main control unit.

[0010] The present invention has outstanding substantial features and significant progress compared to the prior art. Specifically, the present invention, through the mutual cooperation between the lock tongue and the lock body, locks the lock after detecting that the lock tongue has completely entered the lock slot, thereby effectively preventing the occurrence of cheating and improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 It is a structural schematic diagram of the present invention.

[0014] Figure 3 It is a circuit structure diagram of the lock tongue detection unit of the present invention.

[0015] Figure 4 It is a schematic diagram of the circuit structure of the anti-disassembly detection unit of the present invention.

[0016] Figure 5 It is a schematic diagram of the circuit structure of the main control unit of the present invention.

[0017] Figure 6 It is a schematic diagram of the circuit structure of 485 communication of the present invention.

[0018] Figure 7 It is a schematic diagram of the circuit structure of CAD communication of the present invention.

[0019] Figure 8 It is a circuit structure schematic diagram of the power supply circuit of the present invention.

[0020] In the figure: 1. lock body; 2. lock tongue; 3. lock rod; 4. lock slot; 5. pin hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a compartment door locking device for a truck compartment comprises a locking rod rotatably arranged on the compartment door, a locking tongue and a lock body, wherein a main control unit, a communication unit, an electric bolt and a locking tongue detection unit are arranged in the lock body, wherein the main control unit is connected to a user control end through the communication unit, and the main control unit is also electrically connected to the electric bolt and the locking tongue detection unit respectively; one end of the locking tongue is arranged on the locking rod, a locking groove is arranged on the lock body corresponding to the locking tongue, and pin holes are respectively opened on the lock groove and the other end of the locking tongue corresponding to the electric bolt; an identifiable module is arranged on the locking tongue corresponding to the locking tongue detection unit.

[0023] When locking is required, the lock rod is rotated to drive the lock tongue to rotate into the lock slot. After the lock tongue detection unit detects the identifiable module on the lock tongue, the main control unit controls the electric bolt to be inserted into the lock slot and the lock hole on the lock tongue to complete the locking, and sends the locking information to the user control end through the communication unit. When unlocking, the user control end sends an unlocking command to the main control unit through the communication unit, and the main control unit controls the pin shaft of the electric bolt to retract into the lock body, and the pin shaft is separated from the lock hole. At this time, the lock tongue can be rotated out of the lock slot and the door can be opened. Since the lock body is fixed on the door, the detection of the lock tongue position can effectively avoid the situation where the lock body is locked empty.

[0024] Specifically, the lock tongue detection unit includes a lock tongue detection circuit and a lock tongue detection magnetic sensor, the identifiable module is a plurality of magnets with different polarities arranged according to a certain rule, and the lock tongue detection magnetic sensor is arranged in the lock body corresponding to the magnet; the lock tongue detection circuit includes a resistor R3, a resistor R7 and a resistor R10, one end of the resistor R3 is connected to the power supply +3V3, the other end of the resistor R3 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through the pin 4 of the terminal P10, one end of the resistor R7 is connected to the power supply +3V3, the other end of the resistor R7 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through the pin 3 of the terminal P10, one end of the resistor R10 is connected to the power supply +3V3, the other end of the resistor R10 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through the pin 2 of the terminal P10. The identifiable module is a plurality of magnets, and three magnets are used as an example for explanation in this embodiment, and the three magnets with different polarities are arranged according to a certain rule, such as NNS or NSN. Each magnet is provided with a lock tongue detection magnetic sensor. When the lock tongue is not screwed into the lock slot, that is, when the magnet is not close to the lock tongue detection magnetic sensor, or when the polarity of the magnet close to the lock tongue detection magnetic sensor is wrong, the lock tongue detection magnetic sensor has no detection signal. At this time, the main control unit is connected to the power supply through resistor R3, resistor R7 or resistor R10, that is, it receives a high-level signal; when the lock tongue is screwed into the lock slot, that is, when the magnet is close to the lock tongue detection magnetic sensor and the polarity of the magnet is correct, the lock tongue detection magnetic sensor has a detection signal and is turned on. At this time, the main control unit is grounded through the lock tongue detection magnetic sensor, that is, it receives a low-level signal. The main control unit considers that the lock tongue is correctly inserted only when it detects that all three signals are low. After the lock tongue is correctly inserted into the lock slot, the main control unit controls the electric bolt to actively lock.

[0025] In this embodiment, the main control unit is a single chip microcomputer, model STM32F103C8, and port P5 is a program download port. The user control end is a vehicle-mounted control end, and the communication unit is 485 communication or CAN communication. The door lock and door opening information are stored in the main control unit for easy query. In other embodiments, a wireless communication unit is also included, and the unlocking and locking information is sent to the employer end through the wireless communication unit. When actually used, it is also used in conjunction with a detection device such as GPS for detecting the position of the vehicle. If the lock body is not locked and the vehicle moves, the information is recorded and uploaded to the alarm. The power supply circuit is used to provide a working voltage.

[0026] Preferably, an anti-disassembly detection unit is also provided in the lock body, and the anti-disassembly detection unit is electrically connected to the main control unit. In this embodiment, the anti-disassembly detection unit is an anti-disassembly detection circuit, including a resistor R29, a resistor R43, a photoresistor R44 and a MOS tube Q1, the gate of the MOS tube Q1 is connected to the power supply +5V through the photoresistor R44 and is grounded through the resistor R43, the source of the MOS tube Q1 is grounded, the drain of the MOS tube Q1 is connected to the power supply +3V3 through the resistor R29, and the drain of the MOS tube Q1 is also connected to the main control unit. The lock body is a closed shell, that is, the light intensity in the shell is within a certain range. At this time, the resistance of the photoresistor R44 is large, the voltage division on the resistor R43 is small, the MOS tube Q1 cannot be turned on, and the main control unit is connected to the power supply through the resistor R29, that is, it receives a high-level signal. If the lock body shell is forcibly removed, the photoresistor R44 receives more light, the resistance value becomes smaller, the voltage division on the resistor R43 increases, the MOS tube Q11 is turned on, and the detection port GDJC of the main control unit is grounded through the MOS tube Q1, that is, it receives a low level. After the main control unit receives the low level, it means that the shell has been removed. At this time, the main control unit notifies the user control end through the communication unit. Through the change of the level signal, the forced removal can be discovered in time, so as to facilitate timely processing.

[0027] Preferably, the door locking device for a truck compartment further comprises a door detection unit, which is electrically connected to the main control unit; the door detection unit is arranged on one door, and a door identification unit is correspondingly arranged on the other door. When the doors are closed, one side of the two doors is close to each other, and a door detection unit is arranged on one side of one door, and a door identification unit is arranged on the corresponding side of the other door. The door closing situation is effectively detected by the mutual detection and identification of the door detection unit and the door identification unit. In conjunction with the lock tongue identification detection, the main control unit actively controls the electric bolt to lock the lock tongue after identifying that the door is closed and the lock tongue is placed in the lock slot, thereby effectively avoiding the situation where the lock is locked without closing the door. In this embodiment, the door detection unit also includes a detection circuit and a detection magnetic sensor, and the door identification unit is also a magnet array arranged according to a certain rule. Its specific working principle can refer to the above-mentioned lock tongue detection unit and identifiable module. In other embodiments, the door detection and identification can also use an infrared beam module or an IC chip contactless identification module to realize the identification of the closed door, and the principle is the same.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A door locking device for a truck compartment, comprising a locking rod rotatably arranged on the compartment door, characterized in that: The invention also includes a lock tongue and a lock body, wherein a main control unit, a communication unit, an electric bolt and a lock tongue detection unit are arranged in the lock body, the main control unit is connected to the user control end through the communication unit, and the main control unit is also electrically connected to the electric bolt and the lock tongue detection unit respectively; one end of the lock tongue is arranged on the lock rod, a lock groove is arranged on the lock body corresponding to the lock tongue, and pin holes are respectively opened on the lock groove and the other end of the lock tongue corresponding to the electric bolt; an identifiable module is arranged on the lock tongue corresponding to the lock tongue detection unit.

2. The door locking device for a truck compartment according to claim 1, characterized in that: An anti-disassembly detection unit is also provided in the lock body, and the anti-disassembly detection unit is electrically connected to the main control unit.

3. The door locking device for a truck compartment according to claim 1, characterized in that: It also includes a door detection unit, which is electrically connected to the main control unit; the door detection unit is arranged on one door, and a door identification unit is correspondingly arranged on the other door.

4. The door locking device for a truck compartment according to claim 1, characterized in that: The lock tongue detection unit includes a lock tongue detection circuit and a lock tongue detection magnetic sensor, and the lock tongue detection magnetic sensor is arranged in the lock body corresponding to the magnet; the lock tongue detection circuit includes a resistor R3, a resistor R7 and a resistor R10, one end of the resistor R3 is connected to the power supply +3V3, the other end of the resistor R3 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 4 of terminal P10, one end of the resistor R7 is connected to the power supply +3V3, the other end of the resistor R7 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 3 of terminal P10, one end of the resistor R10 is connected to the power supply +3V3, the other end of the resistor R10 is connected to the main control unit and connected to a lock tongue detection magnetic sensor through pin 2 of terminal P10.

5. The door locking device for a truck compartment according to claim 2, characterized in that: The anti-dismantling detection unit is an anti-dismantling detection circuit, including a resistor R29, a resistor R43, a photoresistor R44 and a MOS tube Q1. The gate of the MOS tube Q1 is connected to the power supply +5V through the photoresistor R44 and is grounded through the resistor R43. The source of the MOS tube Q1 is grounded. The drain of the MOS tube Q1 is connected to the power supply +3V3 through the resistor R29. The drain of the MOS tube Q1 is also connected to the main control unit.

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