Anti-loose door buckle seat

By using a combination of threaded rod and clamping arm, the adjusting screw drives the connecting rod and connector to move outward, unfolding the clamping arm and rotating arm to exert pressure on the panel, thus solving the problem of loose door latch seats and improving the stability and sealing of the door.

CN224396227UActive Publication Date: 2026-06-23JIANGSU RONGXIN RAIL TRANSIT TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU RONGXIN RAIL TRANSIT TECHNOLOGY CO LTD
Filing Date
2025-07-29
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The existing door latches are prone to loosening or falling off during use, resulting in poor closure of the lower door.

Method used

It adopts a combination structure of threaded rod, clamping arm and rotating arm. By adjusting the rotation of the screw, the connecting rod and connector move outward, and the clamping arm and rotating arm are unfolded to generate compressive force on the panel, forming a clamping state and preventing the fastener seat from loosening.

Benefits of technology

It effectively prevents the door latch from loosening, ensures the stability and sealing of the lower door, and improves the stability of the door structure.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224396227U_ABST
    Figure CN224396227U_ABST
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Abstract

The utility model discloses a kind of anti-loose vehicle door hasp seat, including hasp seat body, threaded rod and be used for installing the compartment plate of hasp seat body, the threaded rod is connected with compartment plate screw thread through hasp seat body, the one end of threaded rod is fixedly connected with nut, the one end of threaded rod circumferential outer wall is equipped with two first clamping slots, clamping arm is rotatably connected in first clamping slot by rotating shaft, the other end of clamping arm is rotatably connected with rotating arm by rotating shaft, nut and threaded rod are equipped with screw hole, adjusting screw rod is connected with screw hole screw thread in screw hole. The utility model is rotated by adjusting screw rod, so that adjusting screw rod moves outward, to drive connecting rod and connector to move outward, to make clamping arm and rotating arm rotate outward and unfold, to generate extrusion force to compartment plate, under the use of nut cooperation, to form the holding state of hasp seat body and compartment plate, to prevent the loosening of hasp seat body, to avoid affecting the closing condition of lower side door.
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Description

Technical Field

[0001] This utility model relates to the field of door latch seat technology, and in particular to a door latch seat that prevents loosening. Background Technology

[0002] The door latch seat of an open wagon is a special locking device for the lower side door of an open wagon (open-top freight car). It is a key component of the side wall structure of the wagon body and is used to connect and fix the door to ensure the stability and good sealing of the door structure.

[0003] Currently, existing door latch seats are often subjected to bumps or collisions from loading and unloading equipment during use, which can cause the door latch seats to loosen or even fall off, resulting in poor closure of the lower door. Therefore, in order to improve the stability of the door latch seats and to promote technological progress in the industry and enhance core technological competitiveness, this application proposes a new implementation scheme that differs from the existing door latch seat structure and application method. Summary of the Invention

[0004] The purpose of this utility model is to solve the problem of loose door latch seats in existing vehicles, and to propose a door latch seat that prevents loosening.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A door latch seat designed to prevent loosening includes a latch seat body, a threaded rod, and a panel for mounting the latch seat body. The threaded rod passes through the latch seat body and is threadedly connected to the panel. A nut is fixedly connected to one end of the threaded rod. Two first slots are provided on one end of the outer circumference of the threaded rod. A clamping arm is rotatably connected to the first slot via a rotating shaft. A rotating arm is rotatably connected to the other end of the clamping arm via a rotating shaft. Threaded holes are provided in the nut and the threaded rod. An adjusting screw is threadedly connected to the threaded hole. An adjusting hole is provided at one end of the adjusting screw. A connecting rod is fixedly connected to the other end of the adjusting screw. A rotating disk is fixedly connected to one end of the connecting rod, which extends out of the adjusting screw. A connector is rotatably sleeved on the other end of the rotating disk. Two second slots are provided on the outer circumference of the connector. The other end of the rotating arm is rotatably connected to the second slot via a rotating shaft.

[0007] Furthermore, the adjustment hole is one of the following: a slotted hole, a cross-shaped hole, or an internal hexagonal hole.

[0008] Furthermore, the connector has a cylindrical structure.

[0009] Furthermore, the connecting rod is located between the two clamping arms.

[0010] Furthermore, the clamping arm and rotating arm unfold to form a rhomboid structure.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. By adjusting the screw, the screw moves outward, which in turn moves the connecting rod and connector outward. This causes the clamping arm and rotating arm to rotate outward and unfold, thereby generating a compressive force on the panel. With the cooperation of the nut, the latch seat body and the panel are reinforced, thus preventing the latch seat body from loosening and affecting the closing of the lower door.

[0013] 2. Multiple adjustment options are available for the setting of one of the following types of holes: flathead, cross-shaped, and hexagonal, through the adjustment hole to meet different usage needs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the installation state of an anti-loosening door latch seat proposed in this utility model;

[0015] Figure 2 This is a cross-sectional view of the installation state of an anti-loosening door latch seat proposed in this utility model.

[0016] Figure 3 This is a partial cross-sectional view of a door latch seat for preventing loosening proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the retracted state structure of a door latch seat for preventing loosening, as proposed in this utility model.

[0018] In the diagram: 1. Panel; 2. Hook and latch body; 3. Threaded rod; 4. Nut; 5. First slot; 6. Clamping arm; 7. Rotating arm; 8. Connector; 9. Second slot; 10. Connecting rod; 11. Rotating disc; 12. Threaded hole; 13. Adjusting screw; 14. Adjusting hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figures 1-4 A door latch seat that prevents loosening includes a latch seat body 2, a threaded rod 3, and a panel 1 for mounting the latch seat body 2. The threaded rod 3 passes through the latch seat body 2 and is threadedly connected to the panel 1. The threaded rod 3 is passed through the mounting hole on the latch seat body 2 and tightened on the panel 1 to fix the latch seat body 2.

[0021] A nut 4 is welded to one end of the threaded rod 3. Two first slots 5 are provided on one end of the outer circumference of the threaded rod 3. A clamping arm 6 is rotatably connected to the first slot 5 via a rotating shaft. A rotating arm 7 is rotatably connected to the other end of the clamping arm 6 via a rotating shaft. Threaded holes 12 are provided in the nut 4 and the threaded rod 3. An adjusting screw 13 is threadedly connected to the threaded hole 12. An adjusting hole 14 is provided at one end of the adjusting screw 13. A connecting rod 10 is welded to the other end of the adjusting screw 13. A rotating disk 11 is welded to one end of the connecting rod 10, which extends out of the adjusting screw 13. The other end of the rotating disk 11 is rotated. Connector 8 is attached. When adjusting screw 13 rotates, the screw 13 moves outward due to the threaded connection between it and threaded hole 12. This causes connecting rod 10 and connector 8 to move outward, which in turn causes clamping arm 6 and rotating arm 7 to rotate outward and unfold, thereby generating pressure on the box plate 1. With the cooperation of nut 4, the buckle seat body 2 and box plate 1 are clamped, thus preventing the buckle seat body 2 from loosening. The outer circumference of connector 8 is provided with two second slots 9. The other end of rotating arm 7 is rotatably connected to the second slots 9 through rotating shaft.

[0022] The adjusting hole 14 is one of the following: slotted hole, cross hole, or internal hexagonal hole, thus providing multiple options for the rotation of the adjusting screw 13;

[0023] The connector 8 is a cylindrical structure, and the connecting rod 10 is located between the two clamping arms 6. The clamping arms 6 and the rotating arm 7 unfold to form a rhomboid structure.

[0024] The working principle of this embodiment is as follows: In use, firstly, the clamping arm 6 and the rotating arm 7 are rotated to a straight line. Then, the threaded rod 3 is passed through the mounting hole on the latch body 2 and tightened on the box plate 1 to fix the latch body 2. Then, the wrench is inserted into the adjusting hole 14 and turned, thereby driving the adjusting screw 13 to rotate. Under the action of the threaded connection between the adjusting screw 13 and the threaded hole 12, the adjusting screw 13 moves outward, thereby driving the connecting rod 10 and the connecting head 8 to move outward, and then causing the clamping arm 6 and the rotating arm 7 to rotate outward and unfold, thereby generating a squeezing force on the box plate 1. With the cooperation of the nut 4, the latch body 2 and the box plate 1 are in a clamped state, thereby preventing the latch body 2 from loosening. Moreover, the adjusting screw 13 is set in the threaded hole 12 and is not easily touched by external force, further playing an anti-loosening role.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A door latch seat for preventing loosening, comprising a latch seat body (2), a threaded rod (3), and a panel (1) for mounting the latch seat body (2), characterized in that, The threaded rod (3) passes through the buckle seat body (2) and is threadedly connected to the box plate (1). One end of the threaded rod (3) is fixedly connected to a nut (4). One end of the outer circumference of the threaded rod (3) is provided with two first slots (5). A clamping arm (6) is rotatably connected to the first slot (5) through a rotating shaft. The other end of the clamping arm (6) is rotatably connected to a rotating arm (7) through a rotating shaft. The nut (4) and the threaded rod (3) are provided with threaded holes (12). The threaded holes (12) are threaded. An adjusting screw (13) is connected to the adjusting screw (13). One end of the adjusting screw (13) is provided with an adjusting hole (14). The other end of the adjusting screw (13) is fixedly connected to a connecting rod (10). One end of the connecting rod (10) passes through the adjusting screw (13) and is fixedly connected to a rotating disk (11). The other end of the rotating disk (11) is rotatably sleeved with a connector (8). The outer circumference of the connector (8) is provided with two second slots (9). The other end of the rotating arm (7) is rotatably connected to the second slots (9) through a rotating shaft.

2. The anti-loosening door latch seat according to claim 1, characterized in that, The adjustment hole (14) is one of the following: slotted hole, cross hole, or internal hexagonal hole.

3. The anti-loosening door latch seat according to claim 1, characterized in that, The connector (8) has a cylindrical structure.

4. The anti-loosening door latch seat according to claim 1, characterized in that, The link (10) is located between the two clamping arms (6).

5. The anti-loosening door latch seat according to claim 1, characterized in that, The clamping arm (6) and rotating arm (7) unfold to form a rhomboid structure.