Agricultural vehicle door lock

Abstract

This utility model relates to the field of lock technology, and in particular to an agricultural vehicle door lock, including a housing, a handle hinged to the housing, and a lock cylinder disposed within the housing. The inner sidewall of the housing has a groove for placing a door lock pin. A lock hook plate is rotatably disposed at the groove to hook the lock pin, an unlocking component that drives the lock hook plate to lock or unlock, and an interior unlocking component that drives the unlocking component to unlock from inside the vehicle. A force guide component is disposed within the housing to actuate the unlocking component as the lock cylinder rotates. An electronic control unit extends into the housing at the end of the handle not hinged to the housing. The unlocking component is equipped with an electric drive component that is driven by the electronic control unit to actuate the unlocking component. An electronic control component that restricts the actuation of the electronic control unit is also disposed within the housing. The beneficial effect of this utility model is that it achieves the integration of mechanical and electronic control in the agricultural vehicle door lock.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, specifically to a lock for agricultural vehicle doors. Background Technology

[0002] Most agricultural vehicles, such as tractors and excavators, still use simple mechanical locks for their doors. For example, a utility model patent with patent publication number CN2475786Y discloses an agricultural vehicle door lock that includes a door nose that can be installed on the rear pillar of the door and a lock body mechanism installed on the door body. The lock body mechanism includes a lock shell and a bracket that are fixedly connected together. The lock shaft passes through the lock shell and the bracket. One end of the lock shaft is fixed with a ratchet, and the other end is fixed with a lock tongue. A torsion spring is fitted on the lock shaft between the ratchet and the lock tongue. The bracket on one side of the ratchet has a vertical shaft. A pawl, a lever, and a triangular fork are fitted on the vertical shaft. A cylindrical pin is fixed to the top of the vertical shaft. One end of the lever has a tension spring. The pawl engages with the ratchet.

[0003] With the upgrading of agricultural vehicles, drivers are seeking door locks that integrate mechanical and electronic control. The aforementioned purely mechanical door locks can no longer meet the needs of today's consumers, and there is an urgent need to develop a door lock that integrates mechanical and electronic control. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an agricultural vehicle door lock that integrates mechanical and electronic control, addressing the shortcomings of the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an agricultural vehicle door lock, comprising a housing, a handle hinged to the housing, and a lock cylinder disposed within the housing. The inner sidewall of the housing has a groove for placing a door lock pin. A lock hook plate rotatably engages the lock pin at the groove, an unlocking component for locking or unlocking the lock hook, and an interior unlocking component for unlocking the component from inside the vehicle. The housing contains a force guide that rotates with the lock cylinder to activate the unlocking component. The end of the handle not hinged to the housing has an electrical control unit extending into the housing. The unlocking component has an electric drive unit driven by the electrical control unit to activate the unlocking component. The housing also contains an electrical control component that restricts the operation of the electrical control unit.

[0006] The present invention, which has the above-mentioned features, achieves mechanical unlocking of the car door lock by setting a force guide component. The force guide component is activated by turning the lock cylinder with a key, thereby driving the unlocking component linked with the force guide component to move and achieve unlocking. The electronic control unit, the electric drive component and the electronic control component achieve electronic unlocking of the car door lock. When the electronic control component releases the restriction on the electronic control unit, pulling the handle drives the electric drive component to move, and the electric drive component drives the unlocking component to move and achieve unlocking.

[0007] A further feature of this invention is that the unlocking assembly includes a drive plate and a transmission plate for transmitting the driving force of the drive plate. The drive plate is rotatably connected to the housing and has a snap-fit ​​groove for mounting the force guide and a drive hook that is linked to the transmission plate. The electric drive component is linked to the drive plate. The transmission plate has a transmission fulcrum that is rotatably connected to the housing and a linkage shaft that cooperates with the drive hook. The locking hook plate has a C-shaped hook that matches the locking pin and a locking hook fulcrum that is rotatably connected to the housing. A tension spring is provided between the transmission fulcrum and the locking hook fulcrum.

[0008] The present invention, possessing the above-mentioned features, comprises: a drive plate serving as the power unit in the unlocking assembly, which is simultaneously connected to a force guide and an electric drive component, both of which can cause the drive plate to move; a drive hook is provided on the drive plate and a linkage shaft is provided on the transmission plate, so that the drive plate hooks the transmission plate and drives the transmission plate to rotate together when rotating; a tension spring is provided between the transmission plate and the lock hook plate to transmit the unlocking action of the transmission plate to the lock hook plate, causing the lock hook plate to rotate and release the lock pin to unlock the car door lock; the structural design of this unlocking assembly realizes the integrated mechanical and electronic unlocking of the car door lock.

[0009] A further feature of this invention is that the electric drive component includes an electric drive column, an electric drive plate disposed around the electric drive column and linked with the electric control unit, a square block disposed at the end of the electric drive column, and an electric drive pivot disposed at the end of the square block. The drive plate is provided with a square groove that is inserted into the square block, and the electric drive pivot of the electric drive component passes through the square groove and is rotatably connected to the housing.

[0010] The present invention, which has the above features, includes: a square block in the electric drive unit that is plugged into the drive board, thereby synchronizing the operation of the electric drive unit and the drive board; an electric drive fulcrum in the electric drive unit that serves as the rotation fulcrum for the electric drive unit and the drive board; and an electric drive board in the electric drive unit that extends to the electric control unit and is linked with the handle to achieve electric unlocking.

[0011] A further feature of this invention is that the force guide is a pull wire, one end of which is connected to the lock cylinder and the other end of which is connected to the unlocking component. The lock cylinder includes a lock shell, a core rotatably disposed within the lock shell, and a lock plate inserted into the core. A rotating plate is inserted into one end of the lock cylinder located within the shell, and a pull wire terminal is installed at the other end of the rotating plate that is not connected to the lock cylinder.

[0012] The present invention, which has the above-mentioned features, adopts a pull wire as the force guide as the optimal solution, simplifies the mechanical unlocking structure inside the housing, and has the advantages of length and flexibility, and can connect the drive plate and the lock cylinder.

[0013] A further feature of this invention is that the in-vehicle unlocking assembly includes an L-shaped bracket, on which a handle, a paddle, and a reset plate are rotatably mounted. The handle includes a grip extending out of the housing and a toothed plate rotatably connected to the L-shaped bracket. The paddle includes a paddle body rotatably connected to the L-shaped bracket, a first abutment block, and a second abutment block disposed around the paddle body. The toothed plate has at least two protruding teeth, with the first abutment block positioned between the two protruding teeth and the second abutment block abutting against a drive plate. The reset plate has a groove that matches the shape of the protruding teeth on the outer side. The L-shaped bracket also has a torsion spring, and the handle has a limiting post on the side facing the torsion spring. One pin of the torsion spring abuts against the pivot of the paddle, and the other pin abuts against the limiting post.

[0014] The present invention with the above features is as follows: by setting at least two protruding teeth, the first abutment of the paddle abuts against one of the protruding teeth, the reset plate is spliced ​​with the other protruding tooth, the operating grip drives the paddle to move, the paddle moves the driving plate to achieve unlocking, and a torsion spring is set to achieve the reset of the handle after unlocking.

[0015] A further feature of this invention is that the electronic control component includes a solenoid valve and a tactile switch. The solenoid valve is fixedly installed inside the lock housing. The electronic control unit has a limiting groove on the side facing the solenoid valve. The output end of the solenoid valve extends into the limiting groove. The tactile switch is installed inside the electronic control unit, and its contacts extend from inside the electronic control unit to contact the electric drive component.

[0016] The present invention with the above features: When unlocking by electric control, pulling the handle touches the tactile switch, the tactile switch sends an energizing signal to the controller installed in the vehicle, after the solenoid valve is energized, its output end exits the limit groove, and pulling the handle again drives the electric drive component to rotate, and the electric drive component drives the drive plate to move to achieve unlocking.

[0017] A further feature of this invention is that an NFC chip is provided inside the housing.

[0018] The present invention, which has the above-mentioned features, realizes the NFC unlocking method of the car door lock by embedding an NFC chip in the housing.

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model without the shell. Figure 1 .

[0022] Figure 3 This is a schematic diagram of the structure of this utility model without the shell. Figure 2 .

[0023] Figure 4 This is a schematic diagram of the structure of the unlocking component in an embodiment of this utility model.

[0024] Figure 5 This is a schematic diagram of the structure of the vehicle in-vehicle unlocking component according to an embodiment of the present utility model.

[0025] Figure 6 This is an exploded view of the electronic control component according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the NFC installation according to an embodiment of the present invention. Detailed Implementation

[0027] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0028] like Figure 1-7 The agricultural vehicle door lock shown includes a housing 4, a handle 2 hinged to the housing 4, and a lock cylinder 3 disposed inside the housing 4. The inner side wall of the housing 4 is provided with a groove 41 for placing the door lock pin 1. A lock hook plate 5 is rotatably provided at the groove 41 to hook the lock pin 1, an unlocking component for driving the lock hook plate 5 to lock or unlock, and an in-vehicle unlocking component for driving the unlocking component to unlock inside the vehicle. The housing 4 is provided with a guide member 6 that rotates with the lock cylinder 3 to actuate the unlocking component. The end of the handle 2 that is not hinged to the housing 4 is provided with an electronic control part 21 that extends into the housing 4. The unlocking component is provided with an electric drive part 7 that is driven by the electronic control part 21 to actuate the unlocking component. The housing 4 is also provided with an electronic control component that limits the actuation of the electronic control part 21. The housing 4 is provided with an NFC chip 20.

[0029] The unlocking assembly includes a drive plate 8 and a transmission plate 9 that transmits the driving force of the drive plate 8. The drive plate 8 is rotatably connected to the housing 4 and has a snap-fit ​​groove 81 for mounting the force guide 6 and a drive hook 82 that is linked with the transmission plate 9. The transmission plate 9 has a transmission fulcrum 91 that is rotatably connected to the housing 4 and a linkage shaft 92 that cooperates with the drive hook 82. The locking hook plate 5 has a C-shaped hook 51 that is adapted to the locking pin 1 and a locking hook fulcrum 52 that is rotatably connected to the housing 4. A tension spring 10 is provided between the transmission fulcrum 91 and the locking hook fulcrum 52.

[0030] The electric drive unit 7 includes an electric drive column 71, an electric drive plate 72 disposed around the electric drive column 71 and linked with the electric control unit 21, a square block 73 disposed at the end of the electric drive column 71, and an electric drive pivot 74 disposed at the end of the square block 73. The drive plate 8 is provided with a square slot 83 that is inserted into the square block 73. The electric drive pivot 74 of the electric drive unit 7 passes through the square slot 83 and is rotatably connected to the housing 4.

[0031] The electronic control assembly includes a solenoid valve 18 and a tactile switch 19. The solenoid valve 18 is fixedly installed in the lock housing 31. The electronic control unit 21 has a limiting groove 211 on the side facing the solenoid valve 18. The output end of the solenoid valve 18 extends into the limiting groove 211. The tactile switch 19 is installed in the electronic control unit 21, and its contact 191 extends from the electronic control unit 21 to contact the electric drive component 7.

[0032] The force guide 6 is a pull wire, one end of which is connected to the lock cylinder 3 and the other end is connected to the unlocking component. The lock cylinder 3 includes a lock shell 31, a core 32 rotatably disposed in the lock shell 31, and a lock plate (not shown in the figure) inserted in the core 32. A rotating plate 11 is inserted into one end of the lock cylinder 3 placed in the housing 4. A pull wire terminal 61 is installed on the other end of the rotating plate 11 that is not connected to the lock cylinder 3.

[0033] The in-vehicle unlocking assembly includes an L-shaped bracket 12, the inner wall of the aforementioned housing being the L-shaped bracket. A groove is provided on the L-shaped bracket. A handle 13, a paddle 14, and a reset plate 15 are rotatably mounted on the L-shaped bracket 12. The handle 13 includes a grip 131 extending outside the housing 4 and a toothed plate 132 rotatably connected to the L-shaped bracket 12. The paddle 14 includes a paddle body 141 rotatably connected to the L-shaped bracket 12, a first abutment 142 and a second abutment 143 disposed around the paddle body 141. The toothed plate 132 has at least two protrusions. The tooth includes a first protruding tooth 1321 and a second protruding tooth 1322. A first abutment 142 is placed between the two protruding teeth of the tooth plate 132 and abuts against the first protruding tooth 1321. A second abutment 143 abuts against the drive plate 8. The reset plate 15 is provided with a tooth groove 151 that matches the shape of the second protruding tooth 1322. The L-shaped bracket 12 is also provided with a torsion spring 16. A limiting post 17 is provided on the side of the handle 13 facing the torsion spring 16. The first pin 161 of the torsion spring 16 abuts against the rotating shaft of the reset plate 15, and the second pin 162 abuts against the limiting post 17.

[0034] like Figure 2 As shown, when using a key for mechanical unlocking, the key is inserted into the lock cylinder. Turning the key causes the cylinder to rotate, which in turn causes the rotating plate to rotate. The rotation of the rotating plate causes the pull cable terminal in the drive plate to move, thereby causing the drive plate to rotate around the electric drive fulcrum of the electric drive component. The drive plate hooks the transmission plate, causing the transmission plate to rotate around the transmission fulcrum. The tension spring between the transmission plate and the lock hook plate causes the lock hook plate to rotate around the axis. The lock pin disengages from the C-shaped hook of the lock hook plate, and the door unlocks.

[0035] When using a key for electronic unlocking, you need to carry the key with you. First, pull the handle. The handle presses down and triggers the tactile switch. The tactile switch sends a power signal to the controller located inside the vehicle. The controller verifies the key to determine if it is a valid key. After successful verification, the controller connects to the power supply, the solenoid valve is energized and its output end retracts, and the electronic control unit engages the lock. Continue pulling the handle, and the electronic control unit presses down on the electric drive board of the electric drive component. The electric drive board rotates around the electric drive pivot point, which in turn drives the drive plate to rotate. The unlocking action after the drive plate moves is the same as the mechanical unlocking action described above, and will not be repeated here.

[0036] like Figure 5 As shown, when the driver unlocks the door after entering the vehicle, they pull down the handle, and the paddle rotates downward to push the drive plate. The force applied to the drive plate is in the same direction as the force applied to the drive plate by the cable. That is, the unlocking action after the paddle pushes the drive plate is the same as the mechanical unlocking action described above, which will not be repeated here. After unlocking, the handle is released and the handle returns to its original position.

Claims

1. A door lock for an agricultural vehicle, comprising a housing, a handle hinged to the housing, and a lock cylinder disposed within the housing, wherein a groove is provided on the inner side wall of the housing for placing a door lock pin, a lock hook plate rotatably disposed at the groove for hooking the lock pin, an unlocking component for locking or unlocking the lock hook plate, and an interior unlocking component for unlocking by driving the unlocking component from inside the vehicle, characterized in that: The housing contains a force guide that rotates with the lock cylinder to activate the unlocking component. The end of the handle that is not hinged to the housing contains an electrical control unit that extends into the housing. The unlocking component is equipped with an electric drive unit that is driven by the electrical control unit to activate the unlocking component. The housing also contains an electrical control component that limits the activation of the electrical control unit.

2. The agricultural vehicle door lock according to claim 1, characterized in that: The unlocking assembly includes a drive plate and a transmission plate that transmits the driving force of the drive plate. The drive plate is rotatably connected to the housing and has a snap-fit ​​groove for mounting the force guide and a drive hook that is linked to the transmission plate. The electric drive component is linked to the drive plate. The transmission plate has a transmission fulcrum that is rotatably connected to the housing and a linkage shaft that cooperates with the drive hook. The lock hook plate has a C-shaped hook that matches the lock pin and a lock hook fulcrum that is rotatably connected to the housing. A tension spring is provided between the transmission fulcrum and the lock hook fulcrum.

3. A farm vehicle door lock according to claim 2, characterized in that: The electric drive unit includes an electric drive column, an electric drive plate disposed around the electric drive column and linked with the electric control unit, a square block disposed at the end of the electric drive column, and an electric drive pivot disposed at the end of the square block. The drive plate is provided with a square slot that is inserted into the square block. The electric drive pivot of the electric drive unit passes through the square slot and is rotatably connected to the housing.

4. A farm vehicle door lock according to claim 1 or 2, characterized in that: The force guide is a pull wire, one end of which is connected to the lock cylinder and the other end is connected to the unlocking component. The lock cylinder includes a lock shell, a core rotatably disposed in the lock shell, and a lock plate inserted in the core. A rotating plate is inserted into one end of the lock cylinder placed in the shell, and a pull wire terminal is installed on the other end of the rotating plate that is not connected to the lock cylinder.

5. A farm vehicle door lock according to claim 2, characterized in that: The in-vehicle unlocking assembly includes an L-shaped bracket, on which a handle, a paddle, and a reset plate are rotatably mounted. The handle includes a grip extending out of the housing and a toothed plate rotatably connected to the L-shaped bracket. The paddle includes a paddle body rotatably connected to the L-shaped bracket, a first abutment, and a second abutment disposed around the paddle body. The toothed plate has at least two protruding teeth, with the first abutment positioned between the two protruding teeth and the second abutment abutting against a drive plate. The reset plate has a groove that matches the shape of the protruding teeth on the outer side. The L-shaped bracket also has a torsion spring, and a limiting post is provided on the side of the handle facing the torsion spring. One pin of the torsion spring abuts against the rotating shaft of the reset plate, and the other pin abuts against the limiting post.

6. A farm vehicle door lock according to claim 1 or 2, characterized in that: The electronic control assembly includes a solenoid valve and a tactile switch. The solenoid valve is fixedly installed in the lock housing. The electronic control unit has a limiting groove on the side facing the solenoid valve. The output end of the solenoid valve extends into the limiting groove. The tactile switch is installed in the electronic control unit, and its contacts extend from inside the electronic control unit to contact the electric drive component.

7. A farm vehicle door lock according to claim 1, characterized in that: The housing contains an NFC chip.

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