A type of car lock

Abstract

This utility model discloses a lock for a vehicle compartment, including a locking rod. A handle is rotatably mounted on one side of the middle position of the locking rod, and a lock seat is provided at one end of the handle. The lock seat is embedded in the vehicle door. A push rod is horizontally fixedly mounted on the back of the handle, and a connecting seat is fixedly mounted on the back of the handle at a position corresponding to the lock seat. This utility model provides lock holes on both the front and back of the lock seat, with the two lock holes located on the outside of the front and back of the vehicle door, respectively. This retains the traditional external unlocking function while adding an internal unlocking path. When staff are accidentally trapped inside the vehicle compartment, they can drive the latch through the lock hole on the back of the door to release the latch from the locking seat. Then, the push rod, in conjunction with the rotation of the handle, allows the door to be opened for escape. The push rod on the back of the handle has a telescopic structure, allowing it to move along an arc-shaped hole trajectory and adaptively extend and retract according to the rotation angle, facilitating the rotation of the locking rod to open the door.

Description

Technical Field

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

[0002] The locking mechanism for the cargo compartment is the core locking component of the rear or side doors of the cargo compartment (especially freight compartments, refrigerated compartments, and vans). Its main function is to tightly connect and lock the door to the compartment, ensuring the airtightness and safety of the compartment after it is closed, and preventing the cargo from falling out due to accidental opening of the door during transportation.

[0003] The most commonly used locks in existing freight cars (especially trucks and refrigerated trucks) are 6-point tube lock rods. While these locks can achieve basic locking by inserting the handle into the lock seat, the current design of 6-point tube lock rods only considers external locking and unlocking and does not accommodate scenarios where people are accidentally trapped inside the freight car.

[0004] If the door is accidentally closed by an outsider, the unlocking mechanism of the locking lever can only be driven from the outside of the vehicle (requiring the turning of an external handle or operation of the locking lever). Personnel inside cannot access the unlocking components, making it impossible for them to open the door and escape independently. This design flaw poses an extremely high risk in long-distance transport and single-person operation scenarios, potentially leading to safety accidents such as oxygen deprivation and frostbite (in refrigerated transport).

[0005] It is necessary to invent a locking mechanism for train carriages to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a lock for a train carriage to address the aforementioned shortcomings in the technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a lock for a vehicle compartment, including a lock rod, a handle rotatably mounted on one side of the middle position of the lock rod, a lock seat provided at one end of the handle, the lock seat being embedded in the vehicle door, a push rod being horizontally fixedly mounted on the back of the handle, and a connecting seat being fixedly mounted on the back of the handle at a position corresponding to the lock seat. The upper end of the lock base is provided with a groove, one end of the handle and the connecting seat are both located in the groove, and a locking tongue is provided in the groove, which is connected to the connecting seat.

[0008] As a preferred embodiment of this utility model, the lock seat has lock holes on both the front and back sides, with the two lock holes located on the outside of the front and back sides of the car door, respectively. A baffle is rotatably mounted on the top of the lock seat, and the baffle covers the top of the groove.

[0009] As a preferred embodiment of this utility model, the latch is cylindrical, the connecting seat has a vertical through hole, the latch is vertically inserted into the through hole of the connecting seat, and the baffle is located above the top of the handle.

[0010] As a preferred embodiment of this utility model, the push rod is a telescopic structure, the push rod is inserted horizontally into the car door, and an arc-shaped hole is provided on the car door, the push rod is located in the arc-shaped hole.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. By setting lock holes on both the front and back of the lock seat, with the two lock holes located on the outside of the front and back of the car door respectively, the traditional external unlocking function is retained while adding an internal unlocking path. When staff are accidentally trapped inside the car, they can drive the bolt through the lock hole on the back of the car door to release the bolt from the locking state of the connecting seat. Then, the push rod can be used in conjunction with the rotation of the handle to open the door and escape. The push rod on the back of the handle adopts a telescopic structure. The push rod can move along the arc-shaped hole trajectory and adapt to the rotation angle to facilitate the rotation of the lock rod to open. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a first-view perspective perspective view of the overall structure of this utility model; Figure 2 This is a second-view perspective perspective view of the overall structure of this utility model; Figure 3 This is a perspective view of the handle of this utility model; Figure 4 This is a cross-sectional view of the lock base of this utility model; Figure 5 This is a perspective view of the lock base of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Locking bar; 2. Handle; 21. Connecting seat; 22. Through hole; 23. Push rod; 3. Lock seat; 31. Groove; 32. Baffle; 33. Lock tongue; 34. Lock hole; 4. Arc-shaped hole. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figure 1-5 The lock for a car body shown includes a locking rod 1, a handle 2 rotatably mounted on one side of the middle position of the locking rod 1, a lock seat 3 provided at one end of the handle 2, the lock seat 3 being embedded in the car door, a push rod 23 being horizontally fixedly mounted on the back of the handle 2, and a connecting seat 21 being fixedly mounted on the back of the handle 2 at the corresponding position of the lock seat 3. The upper end of the lock base 3 has a groove 31, one end of the handle 2 and the connecting seat 21 are both located in the groove 31, and a locking tongue 33 is provided in the groove 31, which is connected to the connecting seat 21.

[0017] In this embodiment, the locking rod 1 serves as the core connection between the door and the body. A handle 2 is rotatably mounted on one side of the central position, allowing the rotational force of the handle 2 to be directly transmitted to the locking rod 1, thus driving the entire locking rod 1 to open and close the door. The connecting seat 21 is fixed to the back of the handle 2, and its through-hole 22 design allows for precise fitting of the latch 33, enabling the handle 2 to be locked. The connecting seat 21 is correspondingly positioned with the lock seat 3 and embedded in the groove 31 of the lock seat 3, providing a positioning basis for the latch 33. Its vertical through-hole 22 allows the cylindrical latch 33 to be inserted vertically, forming a plug-and-play locking mechanism. This simple structure provides a tight lock, avoiding the loosening problems caused by meshing gaps in traditional locks.

[0018] Furthermore, in the above technical solution, lock holes 34 are provided on the lower front and back sides of the lock seat 3. The two lock holes 34 are located on the outside of the front and back sides of the door, respectively. A baffle 32 is rotatably installed on the top of the lock seat 3, and the baffle 32 covers the top of the groove 31.

[0019] In this embodiment, when the baffle 32 is placed over the groove 31, it completely covers the opening of the groove 31, preventing rainwater, dust, and other contaminants from entering the groove 31. This avoids corrosion of the lock tongue 33 and jamming of the connecting seat 21, reducing maintenance frequency and making it particularly suitable for harsh outdoor transportation environments. Furthermore, the baffle 32 is installed by rotation; it only needs to be flipped upwards to open, without occupying extra space. Simultaneously, when the handle 2 is rotated upwards, it prevents the handle 2 from automatically rotating downwards under its own weight, thus preventing the handle 2 from getting stuck back into the groove 31 of the lock seat 3.

[0020] Furthermore, in the above technical solution, the locking tongue 33 has a cylindrical structure, the connecting seat 21 has a vertical through hole 22, the locking tongue 33 is vertically inserted into the through hole 22 of the lock seat 3, and the baffle 32 is located above the top of the handle 2.

[0021] Furthermore, in the above technical solution, the push rod 23 is a telescopic structure, the push rod 23 is inserted laterally into the car door, and an arc-shaped hole 4 is provided on the car door, the push rod 23 is located in the arc-shaped hole 4.

[0022] In this embodiment, the arc-shaped hole 4 defines the movement trajectory of the push rod 23, ensuring stable operation. The trajectory of the arc-shaped hole 4 precisely matches the rotation trajectory of the handle 2, providing a dedicated movement channel for the push rod 23 and preventing the handle 2 from jamming due to the push rod 23's deviation, ensuring a smooth and controllable unlocking and opening process. Furthermore, the arc-shaped hole 4 is located inside the door, concealing the push rod 23 within it, preventing it from being exposed outside the vehicle and avoiding deformation or damage to the push rod 23 due to external collisions, as well as preventing foreign objects from getting stuck and affecting operation.

[0023] The working process of the lock for a carriage provided by this utility model is as follows: When opening the door from inside the carriage, the push rod 23 of the telescopic structure is extended, and then the latch 33 is unlocked through the lock hole 34 on the back of the lock seat 3, so that the connecting seat 21 on the back of the handle 2 is separated from the latch 33. Then, the push rod 23 is rotated upward along the arc hole 4 on the door. When one end of the handle 2 moves out of the groove 31 of the lock seat 3 and the handle 2 is moved above the baffle 32, the push rod 23 is pushed outward towards the door, and the handle 2 drives the lock rod 1 to rotate outward. Then, the back of the door is pushed from inside the carriage to open the door.

[0024] When closing the car door, the push rod 23 needs to be retracted to its original state. Then, the handle 2 drives the lock rod 1 to rotate towards the front of the car door, so that the handle 2 is parallel to the car door. Then, the handle 2 is rotated downwards, so that the push rod 23 on the back of the handle 2 corresponds to the top of the arc-shaped hole 4 and the push rod 23 is located in the arc-shaped hole 4. Then, the baffle 32 on the top of the lock seat 3 is flipped open, and the handle 2 is rotated into the groove 31 of the lock seat 3. Then, the key is inserted into the lock hole 34 and the bolt 33 is rotated, so that the bolt 33 is inserted into the through hole 22 in the connecting seat 21 on the back of the handle 2, thus completing the locking of the lock.

[0025] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A car body latch, comprising a locking rod (1), characterized in that: A handle (2) is rotatably installed on one side of the middle position of the lock rod (1). A lock seat (3) is provided at one end of the handle (2). The lock seat (3) is embedded in the car door. A push rod (23) is horizontally fixedly installed on the back of the handle (2). A connecting seat (21) is fixedly installed on the back of the handle (2) and at the corresponding position of the lock seat (3). The upper end of the lock seat (3) is provided with a groove (31), one end of the handle (2) and the connecting seat (21) are both located in the groove (31), and a locking tongue (33) is provided in the groove (31), and the locking tongue (33) is connected to the connecting seat (21).

2. The locking mechanism for a train carriage according to claim 1, characterized in that: The lock seat (3) has lock holes (34) on both the front and back sides. The two lock holes (34) are located on the outside of the front and back sides of the door, respectively. A baffle (32) is rotatably installed on the top of the lock seat (3). The baffle (32) covers the groove (31).

3. A car body latch according to claim 2, characterized in that: The latch (33) has a cylindrical structure, the connecting seat (21) has a vertical through hole (22), the latch (33) is vertically inserted into the through hole (22) of the lock seat (3), and the baffle (32) is located above the top of the handle (2).

4. A car body latch according to claim 1, characterized in that: The push rod (23) is a telescopic structure. The push rod (23) is inserted horizontally into the car door, and an arc-shaped hole (4) is provided on the car door. The push rod (23) is located in the arc-shaped hole (4).

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