Built-in lock for container door

Abstract

The built-in lock for the container door comprises a handle, a handle seat, a guide seat, hook lock seats, a lock rod, a connecting rod, a rotating block, a rivet rod and a lock box, the two hook lock seats are arranged at the upper end and the lower end of a container door frame respectively, a lock hole is formed in the center of the other side of the container door in the length direction, and the lock box is embedded into the lock hole and fixed to the lock hole. The handle seat is fixed in the lock box, the rotating block is installed in the handle seat through the main rotating shaft, the handle is fixed to the two ends of the main rotating shaft respectively, the rotating block is hinged to one ends of the two riveting rods respectively, the connecting lines of the position of the main rotating shaft and the positions of the two auxiliary rotating shafts form an isosceles triangle, and the other ends of the two riveting rods are hinged to one ends of the two connecting rods respectively. The other ends of the two connecting rods are fixed to one ends of the two lock rods respectively, the other ends of the two lock rods tilt upwards, when the spanner drives the rotating block to rotate till the distance between the two driven rotating shafts is the maximum in the length direction of the container door, the other ends of the two lock rods are inserted into the two hook lock seats, and the container door is locked.

Description

Technical Field

[0001] This utility model relates to a lock, particularly an internal lock for container doors. Background Technology

[0002] Existing container locks typically consist of a steel tube with a handle in the center and locking wheels fixed at both ends. To close the container door, the handle is rotated, causing the locking wheels to engage with hook lock seats mounted on the container door frame; conversely, the handle is rotated to open the door. When the container is loaded with heavy cargo, the hook lock seats can be crushed and deformed, preventing the door from opening. In severe cases, the container door lock may have to be forcibly opened by damaging it, which not only damages the lock but also wastes loading and unloading time, causing unnecessary trouble for unloading the container.

[0003] Chinese patent CN222373524U discloses a lock for container doors, which is mounted on the outside of the container. However, in order to maximize the use of space in freight trucks or ships, containers are now tended to be loaded one next to another. If the lock is mounted on the outside of the container, it is impossible to place the containers one next to another. Therefore, in order to maximize the use of space in freight trucks or ships, it is urgent to mount the lock inside the container. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing an internal lock for container doors.

[0005] To achieve the purpose of this invention, the following technical solution is adopted:

[0006] This utility model discloses an internal lock for container doors. Two opposing container doors are hinged to one side of a container door frame, and two internal locks are mounted on the other inner side of the container doors. The lock includes: a handle, a handle seat, a guide seat, a hook lock seat, a lock rod, a connecting rod, a rotating block, a rivet rod, and a lock box. Two hook lock seats are mounted to the upper and lower ends of the container door frame via triangular brackets. A lock hole is formed in the center of the length direction on the other side of the container door. The lock box is embedded in and fixed to the lock hole. The handle seat is fixed inside the lock box. The rotating block is mounted inside the handle seat via a main rotating shaft. The main rotating shaft passes sequentially through the side wall of the handle seat, the rotating block, and the side wall of the handle seat. The handle is fixed to both ends of the main rotating shaft. The rotating block is also connected to the two... One end of each rivet is hinged. On the rotating block, the line connecting the position of the main rotating shaft and the positions of the two secondary rotating shafts forms an isosceles triangle. The main rotating shaft is at the vertex of the isosceles triangle. The other ends of the two rivets pass through the handle seat and are hinged to one end of each of the two connecting rods. The other ends of the two connecting rods are fixed to one end of each of the two locking rods. The other ends of the two locking rods are tilted upwards. At least one guide seat is installed on the inner side of the container door above and below the lock box. The connecting rod or locking rod passes through the guide seat. The handle seat, guide seat, and hook lock seat are on a straight line perpendicular to the container door frame. When the wrench drives the rotating block to rotate to the maximum distance between the two secondary rotating shafts in the length direction of the container door, the other ends of the two locking rods are inserted into the two hook lock seats, and the container door is locked. Conversely, the container door is opened.

[0007] The present invention relates to an internal lock for a container door, wherein: it further includes a bearing, and a groove is formed at the other end of the lock rod, the bearing is installed in the groove, one end of the pin passes through the side wall of the groove, the bearing and the side wall of the groove in sequence, and the locking buckle is fixed at both ends of the pin. When the other end of the lock rod is inserted into the hook lock seat, the bearing contacts the hook lock seat.

[0008] The present invention relates to an internal lock for a container door, wherein the locking rod, connecting rod, and rivet rod connected together are in a straight line.

[0009] The present invention relates to an internal lock for a container door, which further includes a lock cover and a lock. The lower end of the lock cover is mounted on the lower end of the lock box via a hinge shaft. The lock is mounted on the lock cover. After the lock is opened with a key, the lock cover rotates around the hinge shaft to expose the lock hole. Rotating the handle opens or closes the internal lock for the container door.

[0010] The present invention relates to an internal lock for a container door, wherein: there are four guide seats, which are respectively installed on the inner side of the container door above and below the lock box, and are used to guide the connecting rod or the locking rod.

[0011] Compared with existing technologies, the internal lock for container doors of this invention has the following advantages:

[0012] The present invention relates to an internal lock for container doors, which is installed inside the container door and does not occupy the external space of the container. Containers can be loaded one after another on freight trucks or cargo ships, maximizing the use of space on the freight trucks or cargo ships. In addition, the lock can prevent theft of goods. Attached Figure Description

[0013] Figure 1 This is a frontal three-dimensional schematic diagram of the internal lock for a container door of this utility model installed on the container door;

[0014] Figure 2 This is a reverse perspective view of the internal lock for a container door of this utility model installed on the container door;

[0015] Figure 3 This is a three-dimensional schematic diagram of the internal lock for container doors according to the present invention. For clarity, the hook lock base has been removed from the diagram.

[0016] Figure 4 This is a three-dimensional schematic diagram of the internal lock for container doors according to the present invention. For clarity, the hook lock base, lock box, handle base and lock cover have been removed in the figure, and the rotating block, rivet rod and handle are shown.

[0017] Figure 5 This is a cross-sectional view of the internal lock mechanism used in a container door, cut from the center of the keyhole.

[0018] Figure 6 This is a magnified 3D schematic diagram of the locking bar.

[0019] exist Figures 1 to 6 In the diagram, number 1 is the handle; number 2 is the handle seat; number 3 is the guide seat; number 4 is the hook lock seat; number 5 is the lock rod; number 6 is the connecting rod; number 7 is the rotating block; number 8 is the rivet rod; number 9 is the bearing; number 10 is the driven shaft; number 11 is the main shaft; number 12 is the pin; number 13 is the tripod; number 14 is the container door; number 15 is the container door frame; number 16 is the hinge; number 17 is the lock cover; number 18 is the lock; number 19 is the hinge shaft; number 20 is the lock box; and number 21 is the lock hole. Detailed Implementation

[0020] like Figures 1 to 6As shown, the present invention relates to an internal lock for a container door. Two opposing container doors 14 are mounted on one side of the container door frame 15 via hinges 16, and two internal locks for the container doors are respectively mounted on the other inner side of the container doors 14.

[0021] The internal lock for container doors of this utility model includes: a handle 1, a handle seat 2, a guide seat 3, a hook lock seat 4, a lock rod 5, a connecting rod 6, a rotating block 7, a rivet rod 8, and a lock box 20. The two hook lock seats 4 are respectively mounted on the upper and lower ends of the container door frame 15 via a tripod 13. A lock hole 21 is provided at the center of the length direction on the other side of the container door 14. The lock box 20 is embedded in and fixed to the lock hole 21. The handle seat 2 is fixed inside the lock box 20. The rotating block 7 is mounted inside the handle seat 2 via the main rotating shaft 11. The main rotating shaft 11 passes through the side wall of the handle seat 2, the rotating block 7, and the side wall of the handle seat 2 in sequence. The handle 1 is fixed to both ends of the main rotating shaft 11. The rotating block 7 is also hinged to one end of two rivets 8 via two secondary rotating shafts 10. The other ends of the two rivets 8 pass through the handle seat 2. On the rotating block 7, the line connecting the position of the main rotating shaft 11 and the positions of the two secondary rotating shafts 10 forms an isosceles triangle. The main rotating shaft 11 is at the vertex of the isosceles triangle. The other ends of the two rivets 8 are respectively connected to the two secondary rotating shafts 10. One end of each connecting rod 6 is hinged, and the other ends of the two connecting rods 6 are respectively fixed to one end of each of the two locking rods 5. The other ends of the two locking rods 5 are tilted upwards. Four guide seats 3 are respectively installed on the inner side of the container door 14 above and below the handle seat 2. The connecting rods 6 or locking rods 5 pass through the guide seats 3. The handle seat 2, guide seats 3 and hook lock seats 4 are on a straight line perpendicular to the container door frame 15. The locking rods 5, connecting rods 6 and rivet rods 8 connected together are on a straight line. When the wrench 1 drives the rotating block 7 to rotate to the maximum distance between the two rotating shafts 10 in the length direction of the container door 14, the other ends of the two locking rods 5 are inserted into the two hook lock seats 4, and the container door 14 is locked. Conversely, the container door 14 is opened.

[0022] like Figure 6 As shown, the internal lock for container doors of this utility model also includes a bearing 9. A groove is opened at the other end of the locking rod 5, and the bearing 9 is installed in the groove. One end of the pin 12 passes through the side wall of the groove, the bearing 9 and the side wall of the groove in sequence. The locking buckle is fixed at both ends of the pin 12. When the other ends of the two locking rods 5 are respectively inserted into the two hook lock seats 4, the bearing 9 contacts the hook lock seat 4.

[0023] like Figure 1 , Figure 3 and 5As shown, the internal lock for container doors of this utility model also includes: a lock cover 17 and a lock 18. The lower end of the lock cover 17 is mounted on the lower end of the lock box 20 via a hinge shaft 19. The lock 18 is mounted on the lock cover 17. After the lock 18 is opened with a key, the lock cover 17 rotates around the hinge shaft 19 to expose the lock hole 21. Rotating the handle 1 can open or close the internal lock for container doors.

[0024] When the key unlocks lock 18, lock cover 17 rotates around hinge axis 19, exposing keyhole 21, and handle 1 drives rotating block 7 to rotate to... Figure 2 When the position shown is such that the distance between the two connecting shafts 10 is the longest in the length direction of the container door 14, the bearings 9 installed in the upper and lower locking rods 5 are respectively inserted into the upper and lower hook lock seats 4. Since the ends of the locking rods 5 are tilted upwards, the locking rods 5 enter into the hook lock seats 4 and press against the hook lock seats 4, thus locking the container door 4. When the handle 1 drives the rotating block 7 to rotate to the point where the distance between the two connecting shafts 10 is the shortest in the length direction of the container door 14, the bearings 9 of the upper and lower locking rods 5 disengage from the upper and lower hook lock seats 4, the locking rods 5 separate from the hook lock seats 4, and the container door 4 is opened.

[0025] The technical content of this utility model has been described above, but the protection scope of this utility model is not limited to the described content. Within the scope of knowledge possessed by those skilled in the art, various changes can be made to the technical content of this utility model without departing from the spirit of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A built-in lock for a container door, one side of two opposite container doors (14) is respectively mounted on two sides of a container door frame (15) by a hinge (16), and two built-in locks for container doors are respectively mounted on the other inner side of the container doors (14), which comprises: The handle (1), handle seat (2), guide seat (3), hook seat (4), lock rod (5), connecting rod (6), rotating block (7), rivet rod (8) and lock box (20), two hook seats (4) are respectively installed on the upper and lower ends of the container door frame (15) through the tripod (13), characterized in that: a lock hole (21) is opened in the length direction of the other side of the container door (14), the lock box (20) is embedded in the lock hole (21) and fixed on the lock hole (21), the handle seat (2) is fixed in the lock box (20), the rotating block (7) is installed in the handle seat (2) through the main rotating shaft (11), the main rotating shaft (11) passes through the side wall of the handle seat (2), the rotating block (7) and the side wall of the handle seat (2) in sequence, the handle (1) is fixed with the two ends of the main rotating shaft (11) respectively, the rotating block (7) is also hinged with the one end of the two rivet rods (8) through the two slave rotating shafts (10) respectively, the line connecting the positions of the main rotating shaft (11) and the two slave rotating shafts (10) on the rotating block (7) is an isosceles triangle, the main rotating shaft (11) is at the top of the isosceles triangle, the other end of the two rivet rods (8) passes through the handle seat (2) and is hinged with the one end of the two connecting rods (6) respectively, the other end of the two connecting rods (6) is fixed with the one end of the two lock rods (5) respectively, the other end of the two lock rods (5) is raised upward, at least one guide seat (3) is installed on the inner side of the container door (14) above and below the lock box (20) respectively, the connecting rod (6) or the lock rod (5) passes through the guide seat (3), the handle seat (2), the guide seat (3) and the hook seat (4) are on a straight line perpendicular to the container door frame (15); when the rotating block (7) is rotated by the spanner (1) to the maximum distance between the two slave rotating shafts (10) in the length direction of the container door (14), the other end of the two lock rods (5) is inserted into the two hook seats (4), the container door (14) is locked, and vice versa, the container door (14) is opened.

2. An interior lock for a container door as defined in claim 1, characterized in that: It also includes a bearing (9), a recess is opened at the other end of the lock rod (5), the bearing (9) is installed in the recess, the pin shaft (12) passes through the side wall of the recess, the bearing (9) and the side wall of the recess in sequence, the locking buckle is fixed at the two ends of the pin shaft (12), when the other end of the lock rod (5) is inserted into the hook seat (4), the bearing (9) is in contact with the hook seat (4).

3. An interior lock for a container door as defined in claim 2, characterized in that: The lock rod (5), the connecting rod (6) and the rivet rod (8) connected together are on a straight line.

4. An interior lock for a container door as defined in claim 3, characterized in that: It also includes: a lock cover (17) and a lock (18), the lower end of the lock cover (17) is installed at the lower end of the lock box (20) through the hinge shaft (19), the lock (18) is installed on the lock cover (17), after the lock (18) is opened by the key, the lock cover (17) rotates around the hinge shaft (19) to expose the lock hole (21), and the handle (1) is rotated to open or close the built-in lock for the container door.

5. An interior lock for a container door as claimed in claim 4 wherein: The guide seat (3) is four, which are installed on the inner side of the container door (14) above and below the lock box (20) respectively, and are used to guide the connecting rod (6) or the lock rod (5).

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