Thermal shrinkage insulation box with lock catch structure

Abstract

The utility model relates to the technical field of thermal shrinkage insulation boxes, in particular to a thermal shrinkage insulation box with a lock catch structure, which comprises an upper cover plate and a lower cover plate, convex cavities are fixedly connected to the outer walls of the upper cover plate and the lower cover plate, and a wire port is arranged on the left side between the upper cover plate and the lower cover plate. The lock catch mechanism comprises a mounting plate fixedly connected to the front end face of the upper cover plate, a lock rod backwards extrudes an inclined plane part at the end of a movable rod, the inclined plane part drives the movable rod to contract rightwards after being extruded by the lock rod, the movable rod extrudes a spring to be in a contraction state, and furthermore, the inclined plane part is completely extruded to the right side of the lock rod which is of a cylindrical structure; after further extrusion, the lock rod is located behind the inclined surface part, at the moment, the whole movable rod is not limited any more, the spring starts to reset, the movable rod is driven to reset leftwards, the lock rod is located behind the movable rod, the upper cover plate and the lower cover plate are locked, locking is convenient, operation is easy, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable insulation boxes, in particular to a heat shrinkable insulation box with a locking structure. Background Art

[0002] The busbars of equipment such as transformers or capacitors often cause short circuit accidents due to the connection of small animals or foreign objects, and may also cause major power outages. In order to ensure safe power supply and avoid similar accidents, in accordance with relevant regulations and requirements, the busbars of equipment such as transformers or capacitors must be equipped with insulating heat shrink sleeves to completely insulate and seal the exposed lead heads. This measure uses a heat shrink material sleeve to strengthen the insulation of the busbar, and the expansion joint or other joint connection part is covered with a molded box pressed by heat shrink material. The molded box pressed by heat shrink material is also called a heat shrink insulation box;

[0003] One side of the heat shrink box is open and is generally fastened with three pins. During the maintenance process, the pins of the heat shrink insulation box need to be opened and the heat shrink insulation box can be removed before the equipment connector can be disassembled and assembled. After the maintenance work is completed, the plastic pins of the heat shrink box must be passed through the heat shrink box cover to fix it. The pins are usually closed by hand, which requires great force and has no fulcrum. Locking is very inconvenient, time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide a heat shrinkable insulation box with a lock structure, which has the characteristics of convenient locking, simple operation, time saving and labor saving.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a heat shrinkable insulation box with a locking structure, comprising an upper cover and a lower cover, the upper cover and the lower cover are movably connected at the rear side, the outer walls of the upper cover and the lower cover are fixedly connected with a convex cavity, a wire port is opened on the left side between the upper cover and the lower cover, a locking mechanism is installed in front of the upper cover and the lower cover, the locking mechanism comprises a mounting plate fixedly connected to the front end surface of the upper cover, the left end of the mounting plate is fixedly connected to a locking rod, the locking mechanism also comprises a movable cylinder fixedly connected to the front end surface of the lower cover, the interior of the movable cylinder is movably connected with a movable rod, the left end of the movable rod is provided with an inclined portion, and a spring is fixedly connected between the movable rod and the inner right end of the movable cylinder.

[0006] In order to pull the movable rod, as a preferred heat-shrinkable insulation box with a locking structure of the utility model, the right end of the movable rod is fixedly connected to a pull rod, the other end of the pull rod extends to the outside of the movable cylinder and is fixedly connected to a pull plate, and the spring is sleeved on the outer wall of the pull rod.

[0007] In order to lock and fix the heat shrinkable insulation box, as a preferred heat shrinkable insulation box with a locking structure of the utility model, the front end surfaces of the mounting plate and the movable rod are fixedly connected with fixing rings, and fixing bolts are threadedly connected between the two fixing rings.

[0008] In order to facilitate locking and fixing the upper cover and the lower cover, as a preferred heat shrinkable insulation box with a locking structure of the utility model, the locking rod is a cylindrical structure and one end away from the mounting plate extends to below the movable rod.

[0009] In order to ensure insulation, as a preferred heat shrinkable insulation box with a locking structure of the utility model, the upper cover plate, the lower cover plate, the convex cavity and the locking mechanism are all made of insulating materials.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] When locking the upper cover and the lower cover, it is only necessary to buckle the upper cover and the lower cover. During the buckling process, the locking rod is located in front of the movable rod. As the upper cover is continuously buckled and closed, the locking rod squeezes the inclined portion at the end of the movable rod backwards. The surface of the inclined portion is squeezed by the locking rod and drives the movable rod to retract to the right. At this time, the movable rod squeezing spring is in a contracted state. Furthermore, at this time, the inclined portion is completely squeezed to the right side of the locking rod. The locking rod is a cylindrical structure. After further squeezing, the locking rod is located behind the inclined portion. At this time, the movable rod is no longer limited as a whole, and the spring begins to reset, thereby driving the movable rod to reset to the left, so that the locking rod is located behind the movable rod, thereby locking the upper cover and the lower cover. The locking is convenient, the operation is simple, and it saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall main structural diagram of the utility model;

[0013] Figure 2 This is a left-side structural diagram of the upper cover and the lower cover of the utility model;

[0014] Figure 3 For this utility model Figure 1 The enlarged structural diagram of part a in the middle;

[0015] Figure 4 This is a schematic diagram of the utility model in an unlocked state;

[0016] Figure 5 This is a schematic diagram of the locking process state of the utility model;

[0017] Figure 6 It is a partial bottom view of the structure of the utility model.

[0018] In the figure: 1. upper cover; 2. lower cover; 3. convex cavity; 4. wire port; 5. mounting plate; 6. locking rod; 7. movable cylinder; 8. movable rod; 9. inclined portion; 10. spring; 11. pull rod; 12. pull plate; 13. fixing ring; 14. fixing bolt. DETAILED DESCRIPTION

[0019] See also Figures 1 to 6 A heat shrinkable insulation box with a locking structure comprises an upper cover plate 1 and a lower cover plate 2, the upper cover plate 1 and the lower cover plate 2 are movably connected at the rear side, the outer walls of the upper cover plate 1 and the lower cover plate 2 are fixedly connected with a convex cavity 3, a wire port 4 is opened on the left side between the upper cover plate 1 and the lower cover plate 2, a locking mechanism is installed in front of the upper cover plate 1 and the lower cover plate 2, the locking mechanism comprises a mounting plate 5 fixedly connected to the front end surface of the upper cover plate 1, a locking rod 6 is fixedly connected to the left end of the mounting plate 5, the locking mechanism also comprises a movable cylinder 7 fixedly connected to the front end surface of the lower cover plate 2, a movable rod 8 is movably connected inside the movable cylinder 7, a chamfer 9 is arranged on the left end of the movable rod 8, and a spring 10 is fixedly connected between the movable rod 8 and the inner right end of the movable cylinder 7.

[0020] In this embodiment, when the upper cover plate 1 and the lower cover plate 2 are locked, it is only necessary to buckle the upper cover plate 1 and the lower cover plate 2 together. Figure 4 As shown, the lock rod 6 is located in front of the movable rod 8. As the upper cover 1 is continuously buckled and closed, the lock rod 6 presses the inclined portion 9 at the end of the movable rod 8 backward. After the surface of the inclined portion 9 is squeezed by the lock rod 6, the movable rod 8 is driven to retract to the right. At this time, the movable rod 8 squeezes the spring 10 to a retracted state. Figure 5 As shown, at this time, the inclined portion 9 is completely squeezed to the right side of the locking rod 6. The locking rod 6 is a cylindrical structure. After further squeezing, Figure 3 As shown, the locking rod 6 is located behind the inclined portion 9. At this time, the movable rod 8 is no longer limited as a whole, and the spring 10 begins to reset, thereby driving the movable rod 8 to reset to the left, so that the locking rod 6 is located behind the movable rod 8, thereby locking the upper cover 1 and the lower cover 2. The locking is convenient, the operation is simple, and time and labor saving are saved.

[0021] As a technical optimization solution of the utility model, the right end of the movable rod 8 is fixedly connected to a pull rod 11, the other end of the pull rod 11 extends to the outside of the movable cylinder 7 and is fixedly connected to a pull plate 12, and the spring 10 is sleeved on the outer wall of the pull rod 11.

[0022] In this embodiment: when the pull rod 11 is pulled by the pull plate 12, the pull rod 11 drives the movable rod 8 to move to the right, so that the lock of the locking rod 6 on the movable rod 8 can be released, thereby facilitating the opening and closing of the heat shrinkable insulation box. At the same time, the pull plate 12 also has a limiting effect on the movable rod 8.

[0023] As a technical optimization solution of the utility model, the front end surfaces of the mounting plate 5 and the movable rod 8 are fixedly connected with a fixing ring 13, and a fixing bolt 14 is threadedly connected between the two fixing rings 13.

[0024] In this embodiment: a fixing bolt 14 is threadedly connected between the two fixing rings 13. After the locking rod 6 locks the movable rod 8, the fixing bolt 14 is passed through the two fixing rings 13 and then tightened by a nut, thereby improving the locking firmness.

[0025] As a technical optimization solution of the present invention, the locking rod 6 is a cylindrical structure and one end away from the mounting plate 5 extends to below the movable rod 8 .

[0026] In this embodiment, the locking rod 6 is a cylindrical structure and one end away from the mounting plate 5 extends to below the movable rod 8 , so as to facilitate squeezing the inclined surface 9 .

[0027] As a technical optimization solution of the utility model, the upper cover plate 1, the lower cover plate 2, the convex cavity 3 and the locking mechanism are all made of insulating materials.

[0028] In this embodiment, the upper cover plate 1, the lower cover plate 2, the convex cavity 3 and the locking mechanism are all made of insulating materials to ensure the insulation of the heat shrinkable insulation box as a whole.

[0029] Working principle: when the upper cover 1 and the lower cover 2 are locked, it is only necessary to buckle the upper cover 1 and the lower cover 2. During the buckling process, the locking rod 6 is located in front of the movable rod 8. As the upper cover 1 is continuously buckled and closed, the locking rod 6 squeezes the inclined portion 9 at the end of the movable rod 8 backwards. The surface of the inclined portion 9 is squeezed by the locking rod 6 and drives the movable rod 8 to retract to the right. At this time, the movable rod 8 squeezes the spring 10 to a contracted state. Furthermore, at this time, the inclined portion 9 is completely squeezed to the right side of the locking rod 6. The locking rod 6 is a cylindrical structure. After further squeezing, the locking rod 6 is located behind the inclined portion 9. At this time, the movable rod 8 is no longer limited as a whole, and the spring 10 begins to reset, thereby driving the movable rod 8 to reset to the left, so that the locking rod 6 is located behind the movable rod 8, thereby locking the upper cover 1 and the lower cover 2. The locking is convenient, the operation is simple, and it saves time and effort.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat shrinkable insulation box with a locking structure, comprising an upper cover plate (1) and a lower cover plate (2), wherein the upper cover plate (1) and the lower cover plate (2) are movably connected at the rear side, characterized in that: The outer walls of the upper cover plate (1) and the lower cover plate (2) are both fixedly connected with a convex cavity (3), a wire port (4) is opened on the left side between the upper cover plate (1) and the lower cover plate (2), a locking mechanism is installed in front of the upper cover plate (1) and the lower cover plate (2), the locking mechanism comprises a mounting plate (5) fixedly connected to the front end surface of the upper cover plate (1), the left end of the mounting plate (5) is fixedly connected to a locking rod (6), the locking mechanism also comprises a movable cylinder (7) fixedly connected to the front end surface of the lower cover plate (2), the interior of the movable cylinder (7) is movably connected with a movable rod (8), the left end of the movable rod (8) is provided with an inclined portion (9), and a spring (10) is fixedly connected between the movable rod (8) and the inner right end of the movable cylinder (7).

2. The heat shrinkable insulation box with a locking structure according to claim 1, characterized in that: The right end of the movable rod (8) is fixedly connected to a pull rod (11), the other end of the pull rod (11) extends to the outside of the movable cylinder (7) and is fixedly connected to a pull plate (12), and the spring (10) is sleeved on the outer wall of the pull rod (11).

3. The heat shrinkable insulation box with a locking structure according to claim 1, characterized in that: The front end surfaces of the mounting plate (5) and the movable rod (8) are both fixedly connected with a fixing ring (13), and a fixing bolt (14) is threadedly connected between the two fixing rings (13).

4. The heat shrinkable insulation box with a locking structure according to claim 1, characterized in that: The locking rod (6) is a cylindrical structure, and one end away from the mounting plate (5) extends to below the movable rod (8).

5. The heat shrinkable insulation box with a locking structure according to claim 1, characterized in that: The upper cover plate (1), the lower cover plate (2), the convex cavity (3) and the locking mechanism are all made of insulating materials.

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