Quick locking mechanism for cabin door of special vehicle

Abstract

The utility model discloses a special vehicle cabin door fast locking mechanism which comprises a cabin door, lock tongues are rotatably installed on the two sides of the cabin door through first embedded columns, one ends of the lock tongues are connected with adjusting connecting rods, one ends of the adjusting connecting rods are connected with control handles, the adjusting connecting rods are driven to move by operating the control handles, and then the lock tongues are driven to operate. And locking and unlocking of the cabin door are achieved. A linkage disc is arranged between the control handle and the adjusting connecting rod, the control handle is fixedly connected with the linkage disc through a handle connecting base, the adjusting connecting rod is hinged to the linkage disc, and the linkage disc is rotationally connected with the cabin door through a second embedded column. A limiting torsional spring is arranged on the second embedded column, one end of the limiting torsional spring is arranged on the linkage disc, and the other end of the limiting torsional spring is supported on the cabin door. A third embedded column is arranged on the cabin door and used for supporting the limiting torsional spring, an arc-shaped limiting hole is formed in the linkage disc, and one end of the third embedded column extends into the arc-shaped limiting hole. Quick opening and closing of the cabin door are achieved, and the locking safety and the operation convenience during opening of the cabin door are improved.

Description

Technical Field

[0001] This utility model relates to the field of locking structures, specifically a quick-locking mechanism for hatches of special vehicles. Background Technology

[0002] With the increasing demands for special-size and ease-of-operation requirements, existing special vehicle hatches have become increasingly complex. Previous hatch designs were often limited in size and simple in structure, requiring multiple steps for opening and closing. To meet these requirements and ensure quick opening and closing, improving hatch locking security and ease of operation has become a crucial issue that urgently needs to be addressed. Utility Model Content

[0003] The purpose of this utility model is to provide a quick-locking mechanism for hatches of special vehicles, so as to realize the quick opening and closing of hatches, improve the locking safety of hatches and the ease of operation when opening.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a quick-locking mechanism for a special vehicle hatch, comprising a hatch, wherein locking tongues are rotatably installed on both sides of the hatch via first pre-embedded columns, one end of the locking tongue is connected to an adjusting rod, and one end of the adjusting rod is connected to a control handle. By operating the control handle, the adjusting rod is moved, which in turn moves the locking tongue, thereby realizing the locking and unlocking of the hatch.

[0005] As a further improvement to the above technical solution:

[0006] A linkage plate is provided between the control handle and the adjusting rod. The control handle is fixedly connected to the linkage plate through a handle connecting seat. The adjusting rod and the linkage plate are hinged. The linkage plate is rotatably connected to the hatch through a second pre-embedded column.

[0007] A limiting torsion spring is provided on the second embedded column. One end of the limiting torsion spring is located on the linkage plate, and the other end is supported on the hatch.

[0008] The hatch is provided with a third embedded column to support the limiting torsion spring, and the linkage plate is provided with an arc-shaped limiting hole, with one end of the third embedded column extending into the arc-shaped limiting hole.

[0009] The adjusting link includes a fisheye bearing, an adjustable screw, and a screw sleeve. The adjustable screw is connected to the fisheye bearing, and the adjustable screw is threadedly engaged with the screw sleeve. The length of the adjusting link can be changed by adjusting the length of the thread engagement.

[0010] The first, second, and third embedded columns are integrally formed with the hatch. This reduces the number of parts and improves the overall structural durability.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By operating the control handle, the bolt can be quickly rotated, enabling rapid locking and unlocking of the hatch, thus improving operational efficiency. The use of a limit torsion spring ensures that the linkage plate quickly returns to its initial position after unlocking, improving locking accuracy. This allows for quick opening and closing of the hatch, enhancing both hatch locking security and ease of operation during opening.

[0013] The single-door control handle is linked to the rigid adjusting rods on both sides, simultaneously pushing the latch to rotate. A limiting torsion spring effectively prevents the door handle from rotating during vehicle operation, thus preventing the latch from disengaging and the locking mechanism from failing. Its structure is simple, easy to manufacture, has low maintenance costs, is convenient to operate, and reliable in use, making it suitable for locking various irregularly shaped top doors. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the lower mold assembly structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the lower mold outer plate structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the external structure of the lower mold main board of this utility model.

[0018] Reference numerals: 1. Locking tongue; 10. Cabin door; 2. Adjusting linkage; 21. Fisheye bearing; 22. Adjustable screw; 23. Screw sleeve; 3. Linkage plate; 4. Handle connecting seat; 5. Control handle; 6. Limiting torsion spring; 7. First embedded post; 8. Third embedded post; 9. Second embedded post. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4 As shown, the quick-locking mechanism for the special vehicle door in this embodiment includes a door 10. Locking tongues 1 are rotatably installed on both sides of the door 10 via first pre-embedded columns 7. One end of the locking tongue 1 is connected to an adjusting rod 2, and one end of the adjusting rod 2 is connected to a control handle 5. By operating the control handle 5, the adjusting rod 2 is moved, which in turn drives the locking tongue 1 to move. By changing the position of the locking tongue 1, the door 10 is locked and unlocked.

[0024] A linkage plate 3 is provided between the control handle 5 and the adjusting rod 2. The control handle 5 is fixedly connected to the linkage plate 3 through the handle connecting seat 4. The adjusting rod 2 and the linkage plate 3 are hinged. The linkage plate 3 is rotatably connected to the hatch 10 through the second pre-embedded column 9.

[0025] A limiting torsion spring 6 is installed on the second embedded column 9. One end of the limiting torsion spring 6 is installed on the linkage plate 3, and the other end is supported on the hatch 10.

[0026] The hatch 10 is equipped with a third embedded column 8 to support the limiting torsion spring 6, and the linkage plate 3 is equipped with an arc-shaped limiting hole, with one end of the third embedded column 8 extending into the arc-shaped limiting hole.

[0027] The adjusting link 2 includes a fisheye bearing 21, an adjustable screw 22, and a screw sleeve 23. The adjustable screw 22 is connected to the fisheye bearing 21, and the adjustable screw 22 is threadedly engaged with the screw sleeve 23. The length of the adjusting link 2 can be changed by adjusting the length of the thread engagement.

[0028] The first embedded column 7, the second embedded column 9, and the third embedded column 8 are integrally formed with the hatch 10. The embedded columns are provided with threaded openings, and the components are limited on the embedded columns by bolts. The holes of the components are larger than the diameter of the bolts, so that the components can rotate.

[0029] In use, by operating the control handle 5, the linkage plate 3 rotates, which in turn moves the adjusting rod 2. The movement of the adjusting rod 2 causes the locking tongue 1 to rotate, changing its position to unlock. After unlocking, it quickly returns to its original position under the elastic action of the limiting torsion spring 6, thus locking again. To improve locking accuracy, the length of the adjusting rod 2 is adjustable. By adjusting the mating length of the screw 22 and the screw sleeve 23, the locking effect can be guaranteed.

[0030] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A quick-locking mechanism for a hatch of a special vehicle, comprising a hatch (10), characterized in that: Locking tongues (1) are rotatably installed on both sides of the hatch (10) via the first pre-embedded column (7). One end of the locking tongue (1) is connected to an adjusting rod (2), and the other end of the adjusting rod (2) is connected to a control handle (5). By operating the control handle (5), the adjusting rod (2) is moved, which in turn drives the locking tongue (1) to run, thereby realizing the locking and unlocking of the hatch (10).

2. The quick-locking mechanism for special vehicle hatches according to claim 1, characterized in that: A linkage plate (3) is provided between the control handle (5) and the adjusting rod (2). The control handle (5) is fixedly connected to the linkage plate (3) through the handle connecting seat (4). The adjusting rod (2) and the linkage plate (3) are hinged. The linkage plate (3) is rotatably connected to the hatch (10) through the second embedded column (9).

3. The quick-locking mechanism for special vehicle hatches according to claim 2, characterized in that: A limiting torsion spring (6) is provided on the second embedded column (9). One end of the limiting torsion spring (6) is provided on the linkage plate (3), and the other end is supported on the hatch (10).

4. The quick-locking mechanism for a special vehicle hatch according to claim 2 or 3, characterized in that: The hatch (10) is provided with a third embedded column (8) for supporting the limiting torsion spring (6), and the linkage plate (3) is provided with an arc-shaped limiting hole. One end of the third embedded column (8) extends into the arc-shaped limiting hole.

5. The quick-locking mechanism for hatches of special vehicles according to claim 4, characterized in that: The adjusting link (2) includes a fisheye bearing (21), an adjustable screw (22) and a screw sleeve (23). The adjustable screw (22) is connected to the fisheye bearing (21), and the adjustable screw (22) is threadedly engaged with the screw sleeve (23). The length of the adjusting link (2) can be changed by adjusting the length of the thread engagement.

6. The quick-locking mechanism for a special vehicle hatch according to claim 5, characterized in that: The first embedded column (7), the second embedded column (9) and the third embedded column (8) are integrally formed with the hatch (10).

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