Electronic agricultural machinery vehicle door lock

Abstract

The utility model relates to an electronic door lock for an agricultural machinery vehicle, which aims at solving the technical problems that the existing similar product is lack of a structural design in which an electronic key and a mechanical key are used at the same time and a corresponding hasp mechanism needs to be improved. The agricultural mechanical vehicle door lock is characterized in that a lock body of the agricultural mechanical vehicle door lock is mounted in a mounting hole of a vehicle door through a front lock body and a rear lock body, the front lock body comprises a clutch mechanism and an outer handle, a hasp mechanism is arranged in the rear lock body, and a catching groove of the outer handle in the front lock body extends into the rear lock body and is buckled with a knob of the hasp mechanism at a fixing plate. An inner handle extending out of one side of the rear lock body is arranged on one side of the hasp mechanism; a lock cylinder rotating piece, a motor rotating piece, a sliding block and a sliding block reset spring are arranged in the clutch mechanism, one end of the sliding block is operated by the lock cylinder rotating piece in the sliding block or the motor rotating piece to stretch out of and retract into the clutch mechanism and is inserted into and separated from a lock groove of the outer handle at the same time, and the outer handle is locked or unlocked and pulled out outwards. And the outer handle is pulled out to drive a knob of the hasp mechanism to rotate so as to unlock the hasp mechanism and the lock catch.

Description

Technical Field

[0001] This utility model relates to a door lock for agricultural machinery with a motor, specifically an electronic door lock for agricultural machinery. Background Technology

[0002] Agricultural vehicles are vehicles equipped with necessary implements and attachments that can perform various field operations such as tilling, sowing, fertilizing, spraying, and harvesting, as well as agricultural operations such as mowing, loading, bulldozing, and drilling. The door locks of such agricultural vehicles are exemplified by patent ZL (patent number 03268509.2), authorized on October 13, 2004, with the utility model title "Agricultural Vehicle Door Lock." However, the door locks of these agricultural vehicles generally use mechanical locks with a latch structure, with electronic lock designs being less common. An electronic lock refers to an electronic lock that controls the operation of a circuit or chip (access control system) through mechanical or electronic password input, thereby controlling the opening and closing of mechanical switches to complete the unlocking and locking tasks. Meanwhile, existing latch structures, such as application number 201020270280.5 disclosed in Chinese patent literature, authorized on March 2, 2011, with the utility model name "Laptop Panel Lock"; and application number 202320938035.4 disclosed in Chinese patent literature, authorized on November 10, 2023, with the utility model name "Long-Life Hook and Loop"; are difficult to directly combine with agricultural machinery vehicle door locks, and some of their structures need to be improved, such as adding internal handles and other components and structures. Summary of the Invention

[0003] To overcome the aforementioned shortcomings, the purpose of this utility model is to provide an electronic agricultural machinery door lock, thereby solving the technical problem that existing similar products lack a structural design that allows for the simultaneous use of both electronic and mechanical keys, and that the corresponding latching mechanism requires further improvement. This objective is achieved through the following technical solution.

[0004] An electronic agricultural machinery door lock is disclosed. The lock body of the agricultural machinery door lock is installed in the mounting hole of the door through a front lock body and a rear lock body. The front lock body includes a clutch mechanism and an outer handle, and the rear lock body includes a latch mechanism. One end of the outer handle on the outside of the front lock body extends out of the rear part of the front lock body through the front panel and inserts into the lock hole at the fixing plate of the rear lock body. The latch of the outer handle engages with the knob of the latch mechanism at the fixing plate. An inner handle is provided on one side of the latch mechanism, extending out of the rear lock body. The latch opening on the other side of the latch mechanism is aligned with the latch hole of the rear lock body. The latch of the door frame enters the latch opening of the latch mechanism through the latch hole of the rear lock body at the door and locks the latch tongue inside the latch mechanism. The knob, inner handle, and latch pin in the latch mechanism are respectively provided with corresponding torsion springs or tension springs. The inner handle, latch tongue, and knob are interconnected and linked to unlock and lock. The key structural design features a clutch mechanism comprising a lock cylinder rotating plate, a motor rotating plate, a slider, and a slider return spring. The slider return spring is located within the spring hole of the slider. One end of the slider extends out of the clutch mechanism and inserts into the lock groove of the outer handle. The lock cylinder rotating plate is located in the first rotating plate hole at one end of the slider. One end of the lock cylinder rotating plate is fixed to the rotating shaft at the bottom of the lock cylinder inside the lock housing. The other end of the lock cylinder rotating plate abuts against the inner diameter of the first rotating plate hole of the slider. The lock cylinder rotating plate drives the slider to move up and down via the lock cylinder. The motor rotating plate is located in the second rotating plate hole at the other end of the slider. One end of the motor rotating plate is fixed to the drive shaft of the motor inside the lock housing. The other end of the motor rotating plate abuts against the inner diameter of the second rotating plate hole of the slider. The motor rotating plate drives the slider to move up and down via the motor. Therefore, the door lock of this agricultural machinery vehicle adds an electronic opening function to the door lock function of the agricultural machinery vehicle. That is, the unlocking and locking of the slider in the clutch mechanism is realized by the rotation of the lock cylinder or motor. Thus, the outer handle is pulled outward to unlock or lock. Pulling out the outer handle drives the knob of the latch mechanism to rotate to unlock the latch mechanism and lock the latch. The latch mechanism hits the latch to lock. The inner handle drives the latch structure to unlock and lock.

[0005] The latch mechanism has a fork on the other side of the latching tongue symmetrically located inside the latching opening. Another torsion spring is located at the pivot pin of the fork. The latching tongue is connected to the knob through the fork and can be unlocked and locked in conjunction.

[0006] The clutch mechanism includes a motor rotor spring installed on the screw at the motor rotor mounting location, a lock cylinder rotor spring installed on another screw at the corresponding lock cylinder rotor mounting location, and additional torsion springs installed on the screws at both the motor rotor and lock cylinder rotor locations. The aforementioned lock cylinder rotor springs and corresponding torsion springs are provided as needed, with at least a motor rotor spring to ensure the normal operation of the motor rotor.

[0007] The lock cylinder rotating plate, motor rotating plate, slider, and slider return spring are housed within the clutch mechanism formed by the upper and lower covers. This facilitates the assembly and use of the clutch mechanism as a whole.

[0008] The fixing plate is fixedly installed in the rear lock body at the rear of the front lock body. The fixing plate is connected to the cover opening at the rear bottom cover of the front lock body on one side of the front lock body to form the rear lock housing. The rear part of the front panel of the front lock body is connected to the rear cover plate at the bottom opening on one side of the rear lock body to form the front lock housing. The motor is connected to the front lock housing through wiring. The above structure provides power to the motor through an external vehicle power supply.

[0009] This utility model has a reasonable structural design, low production cost, and wide application range. In particular, it is convenient to use both electronic and mechanical keys at the same time. It is suitable for use as a door lock for electronic agricultural machinery, as well as for structural improvements of similar products. Attached Figure Description

[0010] Figure 1 This is a partial exploded structural diagram of this utility model.

[0011] Figure 2 yes Figure 1 The diagram shows the rear three-dimensional structure in its assembled state, with the dotted line representing the rear bottom cover.

[0012] Figure 3 yes Figure 1 A schematic diagram of the exploded structure of the clutch mechanism at the rear of the front panel.

[0013] Figure 4 yes Figure 3 The diagram shows the working principle of the rear clutch mechanism in the locked state after assembly. The clutch mechanism is in the open state in the diagram, and the top cover is omitted.

[0014] Figure 5 yes Figure 4 A schematic diagram of the working principle of the motor in the unlocked state.

[0015] Figure 6 yes Figure 4 A schematic diagram illustrating the working principle of the lock cylinder in its unlocked state.

[0016] Figure 7 yes Figure 5 and Figure 6 A schematic diagram of the knob structure at the point where the outer handle is disengaged from the latch mechanism in the unlocked state.

[0017] Figure 8 yes Figure 5 The diagram shows the working principle of the motor in the locked state. The arrows in the diagram indicate the direction of motor rotation.

[0018] Figure 9 yes Figure 6 The diagram shows the working principle of the lock cylinder in the locked state. The arrows in the diagram indicate the direction of rotation of the lock cylinder.

[0019] Figure 10 yes Figure 7A schematic diagram showing the structure where the outer handle cannot be pulled when locked.

[0020] Figure 11 yes Figure 10 The diagram shows the internal structure of the latch mechanism. The outer shell of one side of the latch mechanism, as well as the front panel, lock cylinder, clutch mechanism, rear cover plate and other internal structures of the front lock body, are omitted in the diagram. Only the outer handle is retained, and a fixing plate has been added.

[0021] Attached Figures and Their Names: 1. Front Panel, 2. Clutch Mechanism, 3. Rear Cover, 4. Fixing Plate, 401. Lock Hole, 5. Hook and Loop Mechanism, 501. Knob, 502. Inner Handle, 503. Lock Tongue, 504. Shift Fork, 505. Torsion Spring, 506. Tension Spring, 6. Rear Bottom Cover, 7. Locking Buckle, 8. Lock Cylinder, 9. Motor, 10. Lock Cylinder Rotating Plate, 11. Motor Rotating Plate, 12. Motor Rotating Plate Spring, 13. Top Cover, 14. Slider, 1401. Spring Hole, 1402. First Rotating Plate Hole, 1403. Second Rotating Plate Hole, 15. Slider Return Spring, 16. Bottom Cover, 17. Outer Handle, 1701. Buckle Groove, 1702. Lock Groove. Implementation

[0022] The structure and use of this utility model will now be further described with reference to the accompanying drawings. Figures 1-11As shown, the lock body of the agricultural machinery door lock is installed in the mounting hole of the door through the front lock body and the rear lock body. The front lock body includes a clutch mechanism 2 and an outer handle 17, and the rear lock body includes a latch mechanism 5. One end of the outer handle 17 on the outside of the front lock body has a latch groove 1701 that extends out of the rear part of the front lock body through the front panel 1 and is inserted into the lock hole 401 of the fixing plate 4 of the rear lock body. The latch groove of the outer handle is engaged with the knob 501 of the latch mechanism 5 at the fixing plate. One side of the latch mechanism is provided with an inner handle 502 that extends out of the rear lock body. The latch opening on the other side of the latch mechanism is aligned with the latch hole of the rear lock body. The latch 7 of the door frame is inserted into the latch opening of the latch mechanism through the latch hole of the rear lock body at the door and locked in the latch tongue 503 inside the latch mechanism. The knob, inner handle, and latch pin inside the latch mechanism are respectively provided with corresponding torsion springs 505 or tension springs 506. The inner handle, latch tongue, and knob are interconnected and linked to unlock and lock. The aforementioned clutch mechanism includes a lock cylinder rotating plate 10, a motor rotating plate 11, a slider 14, and a slider return spring 15. The slider return spring is located in the spring hole 1401 of the slider. One end of the slider extends out of the clutch mechanism and inserts into the lock groove 1702 of the outer handle 17. The lock cylinder rotating plate is located in the first rotating plate hole 1402 at one end of the slider. One end of the lock cylinder rotating plate is fixed to the rotating shaft at the bottom of the lock cylinder 8 inside the lock housing. The other end of the lock cylinder rotating plate abuts against the inner diameter of the first rotating plate hole of the slider. The lock cylinder rotating plate drives the slider to move up and down through the lock cylinder. The motor rotating plate is located in the second rotating plate hole 1403 at the other end of the slider. One end of the motor rotating plate is fixed to the drive shaft of the motor 9 inside the lock housing. The other end of the motor rotating plate abuts against the inner diameter of the second rotating plate hole of the slider. The motor rotating plate drives the slider to move up and down through the motor.

[0023] The latch mechanism described above has a fork 504 symmetrically located on the other side of the latch tongue inside the latch opening. Another torsion spring is located at the pivot pin of the fork. The latch tongue is connected to the knob via the fork, enabling simultaneous unlocking and locking. A motor rotor spring 12 is located at the motor rotor mounting screw within the clutch mechanism. The lock cylinder rotor, motor rotor, slider, and slider return spring are housed within the clutch mechanism formed by the upper cover 13 and the bottom cover 16. A fixing plate is fixedly installed within the rear lock body at the rear of the front lock body. The fixing plate connects to the rear bottom cover 6 at the front of the rear lock body on one side of the front lock body to form the rear lock housing. The rear of the front panel of the front lock body connects to the rear cover plate 3 at the bottom of the rear lock body on one side to form the front lock housing. The motor is connected to the front lock housing via wiring.

[0024] In the locked state, the slider's return spring pushes the slider into the lock slot of the outer handle, preventing the outer handle from being pulled outwards, and the latch is in the locked state. The motor rotates 90 degrees counterclockwise, pushing the slider out of the handle's lock slot; or, the lock cylinder rotates 90 degrees counterclockwise, pushing the slider out of the outer handle's lock slot. At this point, pulling the knob on the latch unlocks the door. The motor rotates 90 degrees clockwise, pulling the slider into the lock slot of the outer handle by the slider's return spring; the lock cylinder rotates 90 degrees clockwise, pulling the slider into the lock slot of the outer handle by the slider's return spring. At this point, pulling the outer handle outwards is blocked by the slider's limit stop, preventing the handle from being pulled further.

[0025] When the electronic key is within 1 meter of the car door lock, touching the sensing area with a finger activates the motor. The motor rotates 90 degrees counter-clockwise, pulling the slider upwards. Pulling the outer handle then activates the knob on the latch to open the door. After the door opens, the motor's rotating plate, encountering resistance, overcomes the spring force and slips upwards, disengaging from the drive shaft's limit, thus avoiding the risk of motor stalling. If the electronic function fails, or if mechanical unlocking is required, the mechanical key can simultaneously lock and unlock. Inserting the mechanical key and rotating it 90 degrees counter-clockwise pulls the lock cylinder's rotating plate upwards, pulling the outer handle and the knob on the latch to open the door. Similarly, inside agricultural machinery, swinging the inner handle allows the mechanical key to be used in reverse, unlocking the vehicle via the latch mechanism.

[0026] In summary, this agricultural machinery vehicle door lock relates to industries such as agricultural engineering machinery vehicles, specifically to door locks used in this sector. Previously, similar locks in the industry were generally controlled by a mechanical key, requiring the pull of the outer handle to open the latch. Its main technical feature is the addition of an electronic unlocking function, effectively achieving both electronic and mechanical unlocking. Based on the above structural characteristics, those skilled in the art can choose to incorporate either the mechanical unlocking or electronic key unlocking structure, omitting the corresponding lock cylinder rotor and lock cylinder, or omitting the corresponding motor and motor rotor, which also falls within the protection scope of this utility model.

Claims

1. An electronic agricultural machinery door lock, wherein the lock body of the agricultural machinery door lock is installed in the mounting hole of the door through a front lock body and a rear lock body. The front lock body includes a clutch mechanism (2) and an outer handle (17), and the rear lock body includes a latch mechanism (5). One end of the latch groove (1701) of the outer handle (17) on the outside of the front lock body extends out of the rear part of the front lock body through the front panel (1) and is inserted into the lock hole (401) of the fixing plate (4) of the rear lock body. The latch groove of the outer handle is connected to the knob (501) of the latch mechanism (5) at the fixing plate. The latch mechanism is provided with an inner handle (502) extending from one side of the rear lock body. The latch opening on the other side of the latch mechanism is aligned with the latch hole of the rear lock body. The latch (7) of the door frame enters the latch opening of the latch mechanism through the latch hole of the rear lock body at the door and locks itself in the latch tongue (503) inside the latch mechanism. The knob, inner handle, and latch pin in the latch mechanism are respectively provided with corresponding torsion springs (505) or tension springs (506). The inner handle, latch tongue, and knob are interconnected and linked to unlock and lock. The clutch mechanism (2) is provided with a lock cylinder rotating plate (10), a motor rotating plate (11), a slider (14) and a slider return spring (15). The slider return spring is set in the spring hole (1401) of the slider. One end of the slider extends out of the clutch mechanism and is inserted into the lock groove (1702) of the outer handle (17). The lock cylinder rotating plate is set in the first rotating plate hole (1402) at one end of the slider. One end of the lock cylinder rotating plate is fixed to the rotating shaft at the bottom of the lock cylinder (8) inside the lock shell. The other end of the lock cylinder rotating plate abuts against the inner diameter of the first rotating plate hole of the slider. The lock cylinder rotating plate drives the slider to move up and down through the lock cylinder. The motor rotating plate is set in the second rotating plate hole (1403) at the other end of the slider. One end of the motor rotating plate is fixed to the drive shaft of the motor (9) inside the lock shell. The other end of the motor rotating plate abuts against the inner diameter of the second rotating plate hole of the slider. The motor rotating plate drives the slider to move up and down through the motor.

2. The electronic agricultural machinery door lock according to claim 1, characterized in that... The latch mechanism (5) has a fork (504) symmetrically located on the other side of the latch tongue (503) inside the latch opening. Another torsion spring (505) is located at the pivot pin of the fork. The latch tongue is connected to the knob (501) through the fork and can be unlocked and locked in conjunction.

3. The electronic agricultural machinery door lock according to claim 1, characterized in that... The motor rotor plate (11) in the clutch mechanism (2) is provided with a motor rotor plate spring (12) by a screw, and the lock cylinder rotor plate (10) in the corresponding clutch mechanism is provided with a lock cylinder rotor plate spring by another screw, and the screws at the motor rotor plate and the lock cylinder rotor plate are respectively provided with another torsion spring (505).

4. The electronic agricultural machinery door lock according to claim 1, characterized in that... The lock cylinder rotating plate (10), motor rotating plate (11), slider (14) and slider return spring (15) are disposed in the clutch mechanism (2) formed by the upper cover (13) and the bottom cover (16).

5. The electronic agricultural machinery door lock according to claim 1, characterized in that... The fixing plate (4) is fixedly installed in the rear lock body at the rear of the front lock body. The fixing plate is connected to the cover opening at the rear bottom cover (6) at the front of the rear lock body on one side of the front lock body to form the rear lock shell. The rear part of the front panel of the front lock body is connected to the rear cover plate (3) at the bottom of the rear lock body on one side to form the front lock shell. The motor is connected to the front lock shell through the line.

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