A door lock device and agricultural machinery

Abstract

This utility model provides a door lock device and agricultural machinery. It includes a lock rod, a lock tongue, an electric push rod, a transmission assembly, a signal receiving device, a door handle, and a contact switch. The contact switch can detect the rotation of the door handle and the controller. The controller is signal-connected to the contact switch. When the contact switch receives a door handle rotation signal, the controller activates the signal connection between the controller, the signal receiving device, and the electric push rod. When the signal receiving device receives an unlocking signal, the controller controls the electric push rod to release the lock tongue, preventing the door lock device from being in a standby state for extended periods. This solves the problem of power depletion during the periodic use of agricultural machinery, while retaining the full-featured electronic lock experience, combining reliability and economy.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, and in particular to a door lock device and agricultural machinery. Background Technology

[0002] Currently, most high-horsepower tractors in China use mechanical door locks. However, with the development of the automotive industry and increasing demands for intelligent systems, the application of electronically controlled door locks in agricultural machinery is an inevitable trend. However, agricultural machinery is used cyclically, and during off-seasons, door locks remain in standby mode for extended periods, easily leading to power depletion and rendering electronically controlled door locks unusable. Therefore, it is necessary to provide a door lock device and agricultural machinery that overcomes these shortcomings. Utility Model Content

[0003] The purpose of this utility model is to provide a door lock device and agricultural machinery.

[0004] According to a first aspect of this utility model, a door lock device is provided, comprising: a lock rod disposed on a door frame; a lock tongue disposed on a vehicle door and capable of switching between a locked state and an unlocked state of the lock rod; an electric push rod disposed on the vehicle door; a transmission assembly comprising a first transmission assembly and a second transmission assembly, the first transmission assembly being connected to the lock tongue, the second transmission assembly being connected to the electric push rod and the first transmission assembly, the electric push rod being able to drive the lock tongue to perform an unlocking action against the lock rod via the second transmission assembly and the first transmission assembly; a signal receiving device capable of receiving an unlocking signal from a user; a door handle disposed on the outside of the vehicle door and capable of rotating relative to the vehicle door; and a controller connected to the signal receiving device and the electric push rod, wherein when the signal receiving device receives an unlocking signal, the controller controls the electric push rod to perform an unlocking operation against the lock tongue.

[0005] According to a second aspect of this utility model, a door lock device is provided, comprising: a lock rod disposed on a door frame; a lock tongue disposed on a vehicle door and capable of switching between a locked state and an unlocked state of the lock rod; an electric push rod disposed on the vehicle door; a transmission assembly comprising a first transmission assembly and a second transmission assembly, the first transmission assembly being connected to the lock tongue, the second transmission assembly being connected to the electric push rod and the first transmission assembly, the electric push rod being able to drive the lock tongue to perform an unlocking action against the lock rod via the second transmission assembly and the first transmission assembly; a signal receiving device capable of receiving a user's unlocking signal; a door handle disposed on the outside of the vehicle door and capable of rotating relative to the vehicle door; a contact switch capable of detecting the rotation of the door handle; and a controller connected to the contact switch, wherein when the contact switch receives a door handle rotation signal, the controller activates the signal connection between the controller and the signal receiving device and the electric push rod, and when the signal receiving device receives an unlocking signal, the controller controls the electric push rod to perform an unlocking operation against the lock tongue.

[0006] Preferably, the signal receiving device includes an NFC sensing device, which is located on the outside of the vehicle door.

[0007] Preferably, the contact switch is located on the inside of the car door, the lower end of the door handle is rotatably located on the outside of the car door, and the upper end of the door handle passes through the car door and extends to the contact switch. When the door handle is pulled outward, the upper end of the door handle abuts against the contact switch and triggers the contact switch.

[0008] Preferably, the door lock device further includes an operating lever, and the transmission assembly further includes a third transmission assembly disposed between the operating lever and the first transmission assembly. The operating lever drives the bolt to perform a release action on the lock rod via the third transmission assembly and the first transmission assembly.

[0009] Preferably, the door handle is connected to the first transmission assembly, and the door handle drives the latch to release the lock rod via the first transmission assembly.

[0010] Preferably, the door lock device further includes a mechanical lock cylinder, and the transmission assembly further includes a fourth transmission assembly connected to the mechanical lock cylinder, the fourth transmission assembly being capable of connecting or disconnecting the transmission routes of the door handle, the first transmission assembly, and the lock tongue.

[0011] Preferably, the upper part of the locking tongue is configured to form a first groove portion. When the first groove portion is engaged with the locking rod, it realizes the locking action of the locking rod. When the first groove portion is disengaged from the locking rod, it realizes the unlocking action of the locking rod.

[0012] Preferably, the first transmission assembly includes a first pull rod and a second pull rod connected in the transmission connection. The first pull rod includes an input end connected to the second transmission assembly, the third transmission assembly and the door handle, and the second pull rod is connected in the transmission connection to the lock tongue.

[0013] According to a third aspect of this utility model, an agricultural machine is provided, including the aforementioned door lock device.

[0014] Compared with the prior art, the door lock device and agricultural machinery provided by this utility model have the following beneficial effects: The present invention can detect the rotation of the door handle through a contact switch. When the door handle rotates, the controller activates the signal connection between the controller and the signal receiving device and the electric push rod, avoiding the door lock device from being in a standby state for a long time. This solves the problem of power depletion in agricultural machinery during periodic use, while retaining the full-function electronic lock experience, combining reliability and economy. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 This is a schematic diagram of the structure of the door lock device and the car door of this utility model;

[0017] Figure 2 This is a schematic diagram of the external structure of the door lock device in this utility model;

[0018] Figure 3 This is one of the internal structural diagrams of the door lock device in Embodiment 1 of this utility model;

[0019] Figure 4 This is the second schematic diagram of the internal structure of the door lock device in Embodiment 1 of this utility model;

[0020] Figure 5 This is one of the structural schematic diagrams of the first transmission component in Embodiment 1 of this utility model;

[0021] Figure 6 This is a second schematic diagram of the structure of the first transmission component in Embodiment 1 of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the second transmission component and the third transmission component in Embodiment 1 of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the fourth transmission component in Embodiment 1 of this utility model;

[0024] Figure 9 This is a schematic diagram of the internal structure of the door lock device in Embodiment 2 of this utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the first transmission component, the second transmission component, the third transmission component, and the fourth transmission component in Embodiment 2 of this utility model;

[0026] Figure 11 This is a schematic diagram of the door lock device in Embodiment 2 of this utility model;

[0027] Figure 12 This is a schematic diagram of the agricultural machinery in this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Car door; 200. Door frame; 300. Door lock device;

[0030] 1. Locking bar;

[0031] 21. Outer panel; 22. Inner panel; 211. Inner lock bracket; 211a. First mounting surface; 211b. Second mounting surface;

[0032] 3. Locking tongue; 31. First support shaft; 32. First ratchet portion; 33. First groove portion; 34. First protrusion portion;

[0033] 41. Electric push rod; 42. Operating lever; 43. Mechanical lock cylinder;

[0034] 51. First transmission assembly; 511. Second support shaft; 511a. First mounting part; 512. First pull rod; 512a. Fitting part; 512b. Second slot part; 513. Third support shaft; 514. Second pull rod; 514a. Second protrusion; 514b. Third protrusion; 514c. Second ratchet part; 515. First elastic element;

[0035] 52. Second transmission assembly; 521. Third pull rod; 521a. Waist-shaped hole; 522. Fourth pull rod; 522a. Third slot; 522b. Third ratchet; 523. Eighth pull rod; 524. Ninth pull rod; 525. Second pivot; 525a. Fourth arm; 525b. Fifth arm;

[0036] 53. Third transmission assembly; 531. Lever; 531a. Fourth ratchet part; 532. Limiting element; 533. Limiting post;

[0037] 54. Fourth transmission assembly; 541. Fifth tie rod; 542. Sixth tie rod; 543. First rotating shaft; 544. Second elastic element; 545. Seventh tie rod; 545a. First arm; 545b. Second arm; 546. Third arm;

[0038] 6. Signal receiving device; 61. NFC sensing device;

[0039] 7. Door handle; 71. Lower end of door handle; 72. Upper end of door handle; 721. Notch; 722. Fourth groove; 723. Fifth groove;

[0040] 8. Contact switch. Detailed Implementation

[0041] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0043] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0044] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0047] Example 1

[0048] See Figures 1 to 8 , Figure 12 This embodiment discloses a door lock device 300, which is mainly used in the field of agricultural machinery. This embodiment takes a tractor as an example for illustration. The door lock device 300 includes: a fixing component, a locking rod 1, a locking tongue 3, an electric push rod 41, a transmission component, a signal receiving device 6, a door handle 7, a contact switch 8, and a controller.

[0049] The fixing assembly is provided on the door 100. The fixing assembly includes an outer panel 21 provided on the outside of the door 100, an inner panel 22 provided on the inside of the door 100, and an inner lock bracket 211 provided on the inner panel 22. The inner lock bracket 211 includes a first mounting surface 211a and a second mounting surface 211b. The first mounting surface 211a is parallel to the inner panel 22, and the second mounting surface 211b is perpendicularly connected to the first mounting surface 211a and the inner panel 22.

[0050] Locking rod 1 is mounted on door frame 200, and locking tongue 3 is mounted on inner lock bracket 211. Locking tongue 3 has a first groove 33, and locking tongue 3 can rotate relative to locking rod 1 to switch between locked and unlocked states. Specifically, the lower part of locking tongue 3 is rotatably mounted on first mounting surface 211a via first support shaft 31, and the upper part of locking tongue 3 is constructed to form first groove 33 and first ratchet 32. When first groove 33 is engaged with locking rod 1, locking action is achieved; when first groove 33 is disengaged from locking rod 1, unlocking action is achieved.

[0051] As one of the driving sources, the electric push rod 41 is located between the inner plate 22 and the second mounting surface 211b. The transmission assembly includes a first transmission assembly 51 and a second transmission assembly 52. ​​The first transmission assembly 51 is located on the second mounting surface 211b and is connected to the locking tongue 3. The second transmission assembly 52 is located on the second mounting surface 211b and connects the electric push rod 41 and the first transmission assembly 51. The electric push rod 41 can drive the locking tongue 3 to perform a release action on the locking rod 1 via the second transmission assembly 52 and the first transmission assembly 51.

[0052] See appendix Figure 5 , 6The first transmission assembly 51 includes a first pull rod 512 and a second pull rod 514. The first pull rod 512 is rotatably mounted on the second mounting surface 211b via a second support shaft 511. The first pull rod 512 rotates integrally with the second support shaft 511. The first pull rod 512 extends along the second support shaft 511 toward the first mounting surface 211a. The first pull rod 512 is configured to form a fitting portion 512a in the area protruding from the second mounting surface 211b. A second slot portion 512b is configured below the fitting portion 512a. The second pull rod 514 is rotatably mounted on the second mounting surface 211b via a third support shaft 513. The second pull rod 514 has a second protrusion 514a on the side near the second mounting surface 211b. The second protrusion 514a is located on the rotation trajectory of the second slot. The second pull rod 514 also has a second ratchet portion 514c. The second ratchet portion 514c is disposed opposite to and connected to the first ratchet portion 32.

[0053] When the first fitting part 512a or the second support shaft 511 rotates, the first pull rod 512 drives the second pull rod 514 to rotate through the second slot part 512b and the second protrusion part 514a. The second pull rod 514 drives the locking tongue 3 to rotate through the second ratchet part 514c and the first ratchet part 32, thereby realizing the release action of the locking rod 1.

[0054] The latch 3 has a first protrusion 34 on the side near the second mounting surface 211b, and the second pull rod 514 has a third protrusion 514b on the side near the second mounting surface 211b. A first elastic element 515 is provided between the first protrusion 34 and the third protrusion 514b. When the second pull rod 514 drives the latch 3 to switch from the locked state to the unlocked state, the first elastic element 515 changes from the natural state to the stored state. When the first transmission assembly 51 removes the external force, the first elastic element 515 drives the second pull rod 514 and the first pull rod 512 to reset.

[0055] The second transmission assembly 52 includes a third pull rod 521 and a fourth pull rod 522. The third pull rod 521 is rotatably mounted on the first mounting surface 211a at its middle part. One end of the third pull rod 521 is connected to the electric push rod 41, and the other end of the third pull rod 521 is provided with a waist-shaped hole 521a. The fourth pull rod 522 is mounted on the second mounting surface 211b at its middle part. One end of the fourth pull rod 522 is provided in the waist-shaped hole 521a through a connecting shaft, and the other end of the fourth pull rod 522 is provided with a third groove portion 522a. An engaging portion 512a is provided in the third groove portion 522a. When the engaging portion 512a slides to the third groove portion 522a, it drives the first pull rod 512 to rotate.

[0056] The electric push rod 41 drives the third pull rod 521 to rotate, which in turn drives the fourth pull rod 522 to rotate. Through the cooperation of the third slot 522a and the fitting part 512a, the first transmission assembly 51 is driven to realize the release action of the locking rod 1.

[0057] The signal receiving device 6 is located on the door 100 and can receive the user's unlocking signal. The signal receiving device 6 can be a contact signal receiving device 6 located on the outer panel 21 or a wireless signal receiving device 6 located on the inner panel 22. The contact signal receiving device 6 can be an NFC sensing device 61, which is located on the outside of the door 100. The wireless signal receiving device 6 can be a Bluetooth receiver, a Wi-Fi receiver, or a 4G / 5G receiver.

[0058] The door handle 7 is mounted on the outer panel 21. The lower end 71 of the door handle is rotatably connected to the outer panel 21, and the upper end 72 of the door handle extends through the outer panel 21 into the inner panel 22 and can move horizontally, thereby enabling the door handle 7 to rotate relative to the outer panel 21. The controller is connected to the signal receiving device 6 and the electric push rod 41. When the signal receiving device 6 receives the unlocking signal, the controller controls the electric push rod 41 to release the lock tongue 3.

[0059] Because agricultural machinery is used in a highly cyclical manner, during the off-season, the agricultural machinery and door lock device 300 are in a long-term standby state, which will lead to power depletion and the electronic unlocking method with the electric push rod 41 as its core will not be usable.

[0060] In this embodiment, the door lock device 300 also includes a contact switch 8, which acts as an activation switch, keeping the door lock device 300 in a long-term standby state. The contact switch 8 is located on the inner plate 22 and can detect the rotation of the door handle 7. When the door handle 7 rotates, the controller activates the signal connection between the controller and the signal receiving device 6 and the electric push rod 41.

[0061] See appendix Figure 3 , 4 The contact switch 8 is a mechanical contact switch and is located on the inner plate 22. The lower end 71 of the door handle is rotatably mounted on the outer plate 21. The upper end 72 of the door handle passes through the outer plate 21 and extends to the contact switch 8. When the door handle 7 is pulled outward, the upper end 72 of the door handle abuts against the contact switch 8 and triggers the contact switch 8. Then the controller activates the signal connection between the controller and the signal receiving device 6 and the electric push rod 41.

[0062] The door lock device 300 also includes an operating lever 42 disposed on the inner plate 22. The operating lever 42 serves as a second driving source. The operating lever 42 drives the lock tongue 3 to perform a release action on the lock rod 1 via the transmission assembly. The transmission assembly also includes a third transmission assembly 53 disposed between the operating lever 42 and the first transmission assembly 51.

[0063] See appendix Figure 7 The third transmission assembly 53 includes a lever 531, a limiting member 532, and a limiting post 533. The middle part of the lever 531 is rotatably mounted on the second mounting surface 211b. One end of the lever 531 protrudes from the second mounting surface 211b to form an operating lever 42, and the other end of the lever 531 forms a fourth ratchet portion 531a. The fourth ratchet portion 531a is opposite to and connected to the third ratchet portion 522b. The limiting member 532 is connected to the operating lever 42 and rotates synchronously. The limiting post 533 is located on the movement trajectory of the limiting member 532.

[0064] The user moves the control lever from inside the cab, which in turn drives the third ratchet 522b via the fourth ratchet 531a, thereby moving the first transmission assembly 51 and releasing the locking bolt 3 from the locking lever 1. The limiting member 532 restricts excessive movement of the control lever 42, providing protection.

[0065] The door lock device 300 also includes a mechanical lock cylinder 43, which, together with the door handle 7, serves as a third driving source. The mechanical lock cylinder 43 and the door handle 7 work together to drive the bolt 3 to release the lock rod 1 via a transmission assembly. The transmission assembly also includes a fourth transmission assembly 54, which is connected to the mechanical lock cylinder 43 and can connect or disconnect the transmission routes of the door handle 7, the first transmission assembly 51, and the bolt 3.

[0066] The upper end 72 of the door handle is provided with a fourth groove 722 in the area of ​​the inner plate 22. A first mounting part 511a is provided on the first support shaft 31. The first mounting part 511a is located below the fourth groove 722 and is a predetermined gap away from the bottom of the fourth groove 722. The first mounting part 511a rotates integrally with the second support shaft 511. The door handle 7 will not interfere with the first mounting part 511a during rotation.

[0067] A seventh pull rod 545 is rotatably provided on the first mounting part 511a. The seventh pull rod 545 includes a first arm 545a and a second arm 545b that rotate integrally. The first arm 545a is connected to the mechanical lock cylinder 43 through the pull rod assembly. When the lock tongue 3 switches from the locked state to the unlocked state, the mechanical lock cylinder 43 first drives the second arm 545b to engage in the fourth slot 722, so that the movement of the seventh pull rod 545 interferes with the movement of the door handle 7.

[0068] The lever assembly includes a fifth lever 541, a sixth lever 542, and a first rotating shaft 543. One end of the fifth lever 541 is connected to the mechanical lock cylinder 43, and the other end of the fifth lever 541 and one end of the sixth lever 542 are rotatably mounted on the first rotating shaft 543. The other end of the sixth lever 542 is connected to the first arm 545a. A second elastic element 544 is sleeved on the first rotating shaft 543. When the door handle 7 drives the first lever 512 to rotate, the fifth lever 541 and the sixth lever 542 can be offset by a predetermined distance along the axis of the first rotating shaft 543.

[0069] Example 2

[0070] Based on Embodiment 1, this embodiment optimizes the design of the first transmission component 51, the fourth transmission component 54, and the corresponding structure to improve the transmission stability of the door lock device 300. Other structures are the same as in Embodiment 1.

[0071] See appendix Figures 9 to 10 The door lock device 300 includes: a fixed assembly, a lock rod 1, a lock tongue 3, an electric push rod 41, a transmission assembly, a signal receiving device 6, a door handle 7, a contact switch 8, and a controller.

[0072] Locking rod 1 is mounted on door frame 200; locking tongue 3 is mounted on door 100 and can switch between locking and unlocking states of locking rod 1; electric push rod 41 is mounted on door 100; the transmission assembly includes a first transmission assembly 51 and a second transmission assembly 52. ​​The first transmission assembly 51 is connected to locking tongue 3, and the second transmission assembly 52 is connected to electric push rod 41 and the first transmission assembly 51. Electric push rod 41 can drive locking tongue 3 to perform an unlocking action on locking rod 1 via the second transmission assembly 52 and the first transmission assembly 51; signal receiving device 6 can receive unlocking signals from users; door handle 7 is located on the outside of door 100 and can rotate relative to door 100; contact switch 8 can detect the rotation of door handle 7; controller is signal-connected to contact switch 8. When contact switch 8 receives a rotation signal from door handle 7, controller activates the signal connection between controller and signal receiving device 6 and electric push rod 41. When signal receiving device 6 receives an unlocking signal, controller controls electric push rod 41 to perform an unlocking operation on locking tongue 3.

[0073] See appendix Figure 8The contact switch 8 is a mechanical contact switch located on the inner plate 22. The lower end 71 of the door handle is rotatably mounted on the outer plate 21. The upper end 72 of the door handle passes through the outer plate 21 and extends to the contact switch 8. A notch 721 is provided on the door handle 7. When the door handle 7 is pulled outward, the notch 721 of the upper end 72 of the door handle moves to the contact switch 8, disengaging the upper end 72 of the door handle from the contact switch 8 and triggering the contact switch 8. Then, the controller activates the signal connection between the controller and the signal receiving device 6 and the electric push rod 41. Compared with Embodiment 1, since the road conditions for agricultural machinery are more complex, the notch 721 structure is designed on the upper end 72 of the door handle to avoid accidental triggering due to bumps in the agricultural machinery.

[0074] See appendix Figure 7 The second transmission assembly 52 includes an eighth pull rod 523, a ninth pull rod 524, and a second rotating shaft 525. A bushing is provided on the inner plate 22, the bushing is horizontally mounted on the inner plate 22, the second rotating shaft 525 is located inside the bushing and can rotate along the bushing, and the second rotating shaft 525 has an integrally rotating fourth arm 525a and a fifth arm 525b at both ends. The fourth arm 525a is connected to the output end of the electric push rod 41 through the eighth pull rod 523, and the fifth arm 525b is connected to the first pull rod 512 through the ninth pull rod 524.

[0075] In other words, the electric push rod 41 pulls the eighth lever 523, which in turn drives the fourth arm 525a, the second rotating shaft 525, and the fifth arm 525b to rotate synchronously. This, in turn, drives the first lever 512 to rotate via the ninth lever 524, which in turn drives the locking tongue 3 to release the locking rod 1 via the first transmission assembly 51. Compared to Embodiment 1, the second transmission assembly 52 in this embodiment has a longer lever arm, resulting in more stable power transmission and a lower failure rate.

[0076] See appendix Figure 9 The fourth transmission component 54 includes a third arm 546 connected to the mechanical lock cylinder 43. A fifth slot 723 is provided at the upper end 72 of the door handle. In the locked state, the third arm 546 is fitted into the fifth slot 723, restricting the rotation of the door handle 7. When the lock tongue 3 switches from the locked state to the unlocked state, the mechanical lock cylinder 43 first drives the third arm 546 to disengage from the fifth slot 723, allowing the door handle 7 to be pulled outward, thereby unlocking the door handle 7.

[0077] Correspondingly, the structure of the first mounting portion 511a is also adjusted accordingly. Specifically, the upper end 72 of the door handle is provided with a fourth groove 722 in the area of ​​the inner plate 22, and the first support shaft 31 is provided with a first mounting portion 511a. The first mounting portion 511a is fitted into the fourth groove 722. When the user pulls the door handle 7, it will drive the first mounting portion 511a and the second support shaft 511 to rotate together, thereby driving the lock tongue 3 to perform an unlocking action on the lock rod 1 through the first transmission assembly 51. Compared with Embodiment 1, the structure of the fourth transmission assembly 54 in this embodiment is simpler, more stable, and has a lower failure rate.

[0078] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A door locking device, characterized by comprising: include: A locking rod, which is mounted on the door frame; A locking tongue, which is located on the door and can switch between the locked and unlocked states of the locking rod; An electric push rod, which is mounted on the vehicle door; The transmission assembly includes a first transmission assembly and a second transmission assembly. The first transmission assembly is connected to the locking tongue, and the second transmission assembly is connected to an electric push rod and the first transmission assembly. The electric push rod can drive the locking tongue to perform a release action on the locking rod via the second transmission assembly and the first transmission assembly. A signal receiving device, which is capable of receiving the user's unlocking signal; A door handle, wherein the door handle is located on the outside of the vehicle door and is rotatable relative to the vehicle door; The controller is connected to the signal receiving device and the electric push rod. When the signal receiving device receives an unlocking signal, the controller controls the electric push rod to release the lock tongue.

2. A door locking device characterized by include: A locking rod, which is mounted on the door frame; A locking tongue, which is located on the door and can switch between the locked and unlocked states of the locking rod; An electric push rod, which is mounted on the vehicle door; The transmission assembly includes a first transmission assembly and a second transmission assembly. The first transmission assembly is connected to the locking tongue, and the second transmission assembly is connected to an electric push rod and the first transmission assembly. The electric push rod can drive the locking tongue to perform a release action on the locking rod via the second transmission assembly and the first transmission assembly. A signal receiving device, which is capable of receiving the user's unlocking signal; A door handle, wherein the door handle is located on the outside of the vehicle door and is rotatable relative to the vehicle door; A contact switch, which can detect the rotation of the door handle; The controller is connected to the contact switch. When the contact switch receives the door handle rotation signal, the controller activates the signal connection between the controller and the signal receiving device and the electric push rod. When the signal receiving device receives the unlocking signal, the controller controls the electric push rod to release the lock tongue.

3. A door closer device as claimed in claim 1 or 2, characterised in that, The signal receiving device includes an NFC sensing device, which is located on the outside of the vehicle door.

4. The door latch apparatus of claim 2 wherein, The contact switch is located on the inside of the car door, and the lower end of the door handle is rotatably located on the outside of the car door. The upper end of the door handle passes through the car door and extends to the contact switch, and a notch is provided on the door handle. When the door handle is pulled outward, the upper end of the door handle disengages from the contact switch and triggers the contact switch.

5. The door latch apparatus of claim 1 or 2, wherein The door lock device also includes an operating lever, and the transmission assembly further includes a third transmission assembly disposed between the operating lever and the first transmission assembly. The operating lever drives the bolt to perform a release action on the lock rod via the third transmission assembly and the first transmission assembly.

6. The door latch arrangement of claim 5, wherein The door handle is connected to the first transmission assembly, and the door handle drives the latch to release the lock rod via the first transmission assembly.

7. The door latch arrangement of claim 6, wherein The door lock device also includes a mechanical lock cylinder, and the transmission assembly further includes a fourth transmission assembly connected to the mechanical lock cylinder. The fourth transmission assembly is capable of connecting or disconnecting the transmission routes of the door handle, the first transmission assembly, and the bolt.

8. The door lock device as described in claim 7, characterized in that, The first transmission assembly includes a first pull rod and a second pull rod connected in the transmission connection. The first pull rod includes an input end connected to the second transmission assembly, the third transmission assembly and the door handle. The second pull rod is connected in the transmission connection to the lock tongue.

9. The door lock device as described in claim 1 or 2, characterized in that, The upper part of the locking tongue is configured to form a first groove. When the first groove is engaged with the locking rod, it locks the locking rod. When the first groove is disengaged from the locking rod, it releases the locking rod.

10. An agricultural machine, characterized in that, Includes the door lock device as described in claim 1 or 2.

Images