CN220475359U - Junction box capable of sealing pipeline holes - Google Patents

Abstract

The utility model relates to a terminal box that can seal up pipeline hole, this terminal box that can seal up pipeline hole includes the box body, the shutoff board, elastic component and locking piece, the box body includes backplate and framework, be equipped with the pipeline hole on a curb plate of framework, the shutoff board rotationally locates the holding intracavity, can cover in the curb plate at pipeline hole place, the elastic force of elastic component can order about the shutoff board to switch to closed state and shutoff the pipeline hole, thereby avoid mortar or foreign matter to get into the spool from the spool hole, locking piece locks or releases the shutoff board when the shutoff board switches to open state, thereby make the shutoff board can be locked in open state, or switch to closed state from open state. The pipeline hole can be opened and closed through the rotation and fixation of the plugging plate in the accommodating cavity, the steps of installation and disassembly are saved, the operation is simple, flexible and labor-saving, the plugging plate can be tightly attached to the side plate to form a seal on the pipeline hole through the elastic piece, and the plugging effect is good.

Description

Junction box capable of sealing pipeline holes

Technical Field

The present disclosure relates to the field of junction boxes, and in particular, to a junction box capable of covering a pipeline hole.

Background

The junction box is an important electrical component, is widely applied to various circuits, and plays a role in protecting wires and connecting wires. When the junction box is installed, the junction box is required to be pre-buried in a wall body, the wire pipe is installed in a wiring hole of the junction box, and then pouring or plastering construction is carried out on the wall surface.

One chinese patent of the utility model, publication No. CN207625240U, discloses a junction box cover for preventing mortar from being polluted by plastering, specifically, the junction box cover comprises a cover plate body, the cover plate body comprises a base plate and a convex edge on the periphery of the base plate, a top sheet is arranged on the base plate, a notch is arranged on the edge, the top sheet of the base plate is used for positioning the box cover, when the plastering construction is performed, the top sheet corresponds to the screw gasket of the junction box, positioning of the cover plate can be realized, when the cover plate is pushed inwards, the notch is matched with the screw gasket, the cover plate surface can be flush with the outermost edge of the junction box, and the cover plate body is fastened on the opening end of the embedded junction box, so that mortar or foreign matters are prevented from being poured into the junction box in the plastering construction process, and the line pipe in the junction box is prevented from being blocked. The top piece is required to be utilized for positioning before plastering construction, the cover plate and the box body are assembled, and after plastering construction is completed, the gap on the foundation base plate is required to be pried to disassemble the cover plate, so that the operation is complicated.

Disclosure of Invention

An objective of the present disclosure is to provide a junction box capable of sealing a pipeline hole, so as to solve the above technical problems.

In order to solve the technical problems, the following technical scheme is adopted in the present disclosure.

The present disclosure provides a junction box capable of closing a pipeline hole, the junction box capable of closing the pipeline hole comprising: the box body comprises a back plate and a frame body, wherein the frame body is connected to one side of the back plate and encloses a containing cavity with an opening, the frame body comprises a side plate, and pipeline holes are formed in the side plate; the plugging plate is rotatably arranged in the accommodating cavity, is provided with a yielding groove, is switched between an open state and a closed state by rotation, and is covered on the backboard to open the pipeline hole in the open state, and is covered on the side board to close the pipeline hole in the closed state, and is communicated with the pipeline hole in the side board; the elastic piece is arranged in the accommodating cavity and drives the plugging plate to be switched to a closed state; the locking piece is arranged in the accommodating cavity and used for locking or releasing the plugging plate when the plugging plate is switched to an open state.

In some embodiments of the present application, the locking member is movably disposed in the accommodating cavity, and the locking member includes a locking end; when the plugging plate is covered on the backboard, the projection of the locking end can move to the inner side of the plugging plate in the direction perpendicular to the backboard, so that the locking end locks the plugging plate between the locking end and the backboard, or the projection of the locking end can move to the outer side of the plugging plate, so that the locking end releases the plugging plate.

In some embodiments of the present application, the locking member includes a locking portion; the two ends of the locking part are respectively a driving end and a locking end, and the driving end is hinged with the backboard; the rotation of the driving end can drive the projection of the locking end to move to the inner side of the plugging plate or to the outer side of the plugging plate.

In some embodiments of the present application, the locking member further comprises a hinge shaft; one end of the hinge shaft is hinged with the backboard, and the other end extends into the accommodating cavity; the locking part extends along the radial direction of the hinge shaft, the driving end of the locking part is fixedly connected to the other end of the hinge shaft, and a space for the plugging plate to enter is formed between the locking part and the backboard. In some embodiments of the present application, the hinge shaft includes a first shaft section and a second shaft section, and the first shaft section has a diameter smaller than the second shaft section; the first shaft section is rotatably arranged on the back plate in a penetrating way; the second shaft section is arranged in the accommodating cavity, one end of the second shaft section is fixedly connected with the first shaft section, and the other end of the second shaft section extends into the accommodating cavity; the driving end of the locking part is fixedly connected to the other end of the second shaft section, and the second shaft section enables an interval to be arranged between the locking part and the backboard; the locking piece also comprises a limiting part; the limiting part is arranged outside the accommodating cavity and fixedly connected to the first shaft section, and the limiting part and the locking part limit the locking piece on the backboard. The locking piece also comprises a limiting part; the limiting part is arranged outside the accommodating cavity and fixedly connected to the first shaft section, and the limiting part and the locking part limit the locking piece on the backboard.

In some embodiments of the present application, the junction box capable of sealing the hole of the pipeline further includes a fixed shaft, and the fixed shaft is fixed in the accommodating cavity; the plugging plate is provided with shaft holes with two through sides; the plugging plate is rotatably sleeved outside the fixed shaft through the shaft hole; the elastic piece comprises two torsion springs; the two torsion springs are respectively sleeved at the two ends of the fixed shaft; the plugging plate is provided with a mounting groove; the backboard is provided with a fixing groove; one end of the torsion spring is arranged in the mounting groove, and the other end of the torsion spring is arranged in the fixing groove; wherein, the torsional spring drives the shutoff board to keep in the closed state under natural state.

In some embodiments of the present application, the axis of the dead axle is parallel to the boundary line of the back plate and the side plate; the locking piece acts on the plugging plate and enables the plugging plate to be attached to the back plate.

In some embodiments of the present application, the junction box capable of closing the pipeline hole further comprises a nut; two opposite through holes are arranged on the frame body; the two ends of the fixed shaft respectively pass through the through holes and are connected with the nuts; the nut is abutted against the outer peripheral wall of the frame body.

In some embodiments of the present application, the side plate is further provided with a fixing member; the fixing piece is provided with a fixing part; when the plugging plate is covered on the side plate, the fixing part moves to form a block on one surface of the plugging plate, which is opposite to the side plate, so that the plugging plate is fixed in a closed state.

According to the technical scheme, the embodiment of the disclosure has at least the following advantages and positive effects:

in the junction box capable of sealing the pipeline holes, when the junction box is installed, the junction box is required to be pre-buried in a wall body, then the line pipe is installed, and finally the wall surface is poured or plastered. When the spool is installed, the blocking plate is locked in a closed state by the locking piece, the pipeline hole is opened, and the spool is installed at the pipeline hole through the locking nut. Before pouring or plastering the construction to the wall, make the locking piece release the shutoff board through applying external force, the shutoff board rotates to curb plate one side and the lid closes on the curb plate under the elastic force drive of elastic component, and the groove of stepping down provides the space of keeping somewhere of lock female for the shutoff board can laminate in the curb plate, forms to block the pipeline hole, avoids pouring or plastering mortar or foreign matter fall into the spool when being under construction, causes the phenomenon of spool jam. And after pouring or plastering is finished, the plugging plate is rotated to the back plate only by applying external force and is fixed by the locking piece, and the locking piece can prevent the plugging plate from rotating to a closed state under the driving of the elastic piece, so that the plugging plate does not need to be disassembled. The pipeline hole can be opened and closed by rotating and fixing the plugging plate in the accommodating cavity, the steps of installing and detaching the box cover are saved, the operation is simple, flexible and labor-saving, the plugging plate can be tightly attached to the side plate to form the seal on the pipeline hole by the aid of the elastic piece, and the plugging effect is good.

Drawings

Various objects, features and advantages of the present disclosure will become more apparent from the following detailed description of the preferred embodiments of the disclosure, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout.

Wherein:

fig. 1 is a schematic structural view of a junction box capable of covering a pipeline hole according to an embodiment of the disclosure.

Fig. 2 is a schematic view of the structure of fig. 1 from another view angle.

Fig. 3 is a schematic view of the closure plate of fig. 1 in a closed position.

Fig. 4 is a cross-sectional view of fig. 1.

Fig. 5 is a schematic view of the installation of the elastic member in fig. 2.

The reference numerals are explained as follows: 1. a case body; 11. a back plate; 111. a fixing groove; 12. a frame; 121. a side plate; 122. a through hole; 1211. a pipeline hole; 13. a receiving chamber; 2. a plugging plate; 21. a relief groove; 22. a shaft hole; 23. a mounting groove; 3. an elastic member; 31. a torsion spring; 4. a locking member; 41. a locking part; 411. a locking end; 412. a driving end; 42. a hinge shaft; 421. a first shaft section; 422. a second shaft section; 43. a limit part; 5. fixing the shaft; 6. and (3) a nut.

Detailed Description

While this disclosure may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the disclosure to that as illustrated herein.

Thus, rather than implying that each embodiment of the present disclosure must have the illustrated features, one feature noted in this specification will be used to illustrate one of the features of an embodiment of the present disclosure. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.

In the embodiments shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various elements of the disclosure as opposed to absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a junction box capable of sealing a pipeline hole according to an embodiment of the disclosure. Fig. 2 is a schematic view of the structure of fig. 1 from another view angle. Fig. 3 is a schematic view of the closure plate 2 of fig. 1 in a closed state. The junction box capable of sealing the pipeline hole in one embodiment of the disclosure mainly comprises a box body 1, a sealing plate 2, an elastic piece 3 and a locking piece 4. The box body 1 comprises a back plate 11 and a frame body 12, the frame body 12 is connected to one side of the back plate 11 and encloses a containing cavity 13 with an opening, the frame body 12 comprises a side plate 121, and a pipeline hole 1211 is arranged on the side plate 121. The plugging plate 2 is rotatably disposed in the accommodating cavity 13, and the plugging plate 2 is provided with a yielding groove 21, the plugging plate 2 is switched between an open state and a closed state by rotation, in the open state, the plugging plate 2 is covered on the back plate 11 to open the pipeline hole 1211, the yielding groove 21 faces away from the back plate 11, in the closed state, the plugging plate 2 is covered on the side plate 121 to close the pipeline hole 1211, and the yielding groove 21 faces the side plate 121 and is communicated with the pipeline hole 1211. The elastic element 3 is arranged in the accommodating cavity 13, and the elastic element 3 drives the plugging plate 2 to be switched to a closed state. The locking member 4 is arranged in the accommodating cavity 13, and the locking member 4 is used for locking or releasing the plugging plate 2 when the plugging plate 2 is switched to the open state.

The use process of the junction box capable of sealing the pipeline hole is as follows: when the junction box is installed, the junction box is pre-buried in a wall body, then the line pipe is installed, and finally the wall surface is poured or plastered. When the line pipe is mounted, the blocking plate 2 is locked in a closed state by the locking member 4, the line hole 1211 is opened, and the line pipe is mounted at the line pipe hole by the lock nut. Before pouring or plastering the wall, the locking piece 4 releases the plugging plate 2 by applying external force, the plugging plate 2 rotates towards one side of the side plate 121 under the driving of the elastic force of the elastic piece 3 and covers the side plate 121, the yielding groove 21 provides a retaining space for the lock nut, the plugging plate 2 can be attached to the side plate 121 to form a blocking on the pipeline hole 1211, and the phenomenon that the pipeline is blocked due to the fact that mortar or foreign matters fall into the pipeline when pouring or plastering is avoided. And after pouring or plastering is finished, the plugging plate 2 is only required to be rotated to be covered on the back plate 11 by applying external force and is fixed by the locking piece 4, the locking piece 4 can prevent the plugging plate 2 from rotating to be in a closed state under the driving of the elastic piece 3, and the plugging plate 2 is not required to be disassembled when the pipeline hole 1211 is opened. Opening and closing of the pipeline holes 1211 can be achieved through rotation of the plugging plate 2 in the accommodating cavity 13, steps of installing and detaching the box cover are saved, operation is simple, flexible and labor-saving, the plugging plate 2 can be tightly attached to the side plates 121 to form closing of the pipeline holes 1211 through the arrangement of the elastic piece 3, and the plugging effect is good.

Referring to fig. 4, fig. 4 is a cross-sectional view of fig. 1. The locking member 4 is movably disposed in the receiving cavity 13, and the locking member 4 includes a locking end 411. When the plugging plate 2 is covered on the back plate 11, in the direction perpendicular to the back plate 11, the projection of the locking end 411 can move to the inner side of the plugging plate 2, so that the locking end 411 locks the plugging plate 2 between the locking end 411 and the back plate 11, or the projection of the locking end 411 can move to the outer side of the plugging plate 2, so that the locking end 411 releases the plugging plate 2.

By applying an external force to the locking member 4, the locking end 411 moves and forms a barrier to the closure plate 2, and the blocking force of the locking end 411 to the closure plate 2 is used to overcome the elastic force of the elastic member 3 and lock the closure plate 2 in the open state. When the locking end 411 moves to the state of not blocking the plugging plate 2, the plugging plate 2 is released, and the plugging plate 2 is rotated and switched to the closed state under the driving of the elastic member 3. The blocking end 411 can be moved to block or unblock the plugging plate 2, so that the plugging plate 2 can be locked and released in an opened state, and the operation is simple and easy to realize.

It should be noted that the locking end 411 may be movable in translation, rotation, or other movement modes.

Referring to fig. 4, the locking member 4 includes a locking portion 41. The two ends of the locking part 41 are respectively provided with a driving end 412 and a locking end 411, and the driving end 412 is hinged with the back plate 11. Rotation of the drive end 412 can drive the projection of the locking end 411 to move to the inside of the closure plate 2 or to the outside of the closure plate 2.

When the driving end 412 rotates, the locking end 411 can rotate to form a blocking to the plugging plate 2 under the driving of the driving end 412, and can also rotate to not block the plugging plate 2, so that the plugging plate 2 can be quickly locked or released, and the rotating setting mode has the advantages of being simple to operate, convenient to adjust and high in flexibility.

Referring to fig. 4, the locking member 4 further includes a hinge shaft 42. One end of the hinge shaft 42 is hinged to the back plate 11, and the other end extends into the accommodating chamber 13. The locking portion 41 extends in the radial direction of the hinge shaft 42, and the driving end 412 of the locking portion 41 is fixedly connected to the other end of the hinge shaft 42 with a space for the entry of the plugging plate 2 between the locking portion 41 and the back plate 11.

The driving end 412 is hinged on the back plate 11 through the arrangement of the hinge shaft 42, the arrangement of the hinge shaft 42 also enables the locking part 41 and the back plate 11 to be spaced, when the plugging plate 2 rotates to an open state, the plugging plate can be put between the back plate 11 and the locking part 41, the hinge shaft 42 drives the locking part 41 extending along the radial direction of the hinge shaft 42 to rotate to form a locking end 411 to block the plugging plate 2, and the locking part 4 can lock and release the plugging plate 2 by driving the hinge shaft 42 to rotate, so that the plugging plate 2 is simpler in operation and more stable in structure.

Referring to fig. 4, the hinge shaft 42 includes a first shaft section 421 and a second shaft section 422, and the diameter of the first shaft section 421 is smaller than that of the second shaft section 422. The first shaft section 421 rotatably penetrates through the back plate 11. The second shaft section 422 is disposed in the accommodating cavity 13, one end of the second shaft section 422 is fixedly connected to the first shaft section 421, and the other end of the second shaft section 422 extends into the accommodating cavity 13. The driving end 412 of the locking portion 41 is fixedly connected to the other end of the second shaft section 422, and the second shaft section 422 provides a space between the locking portion 41 and the back plate 11. The locking member 4 further includes a stopper 43. The limiting part 43 is arranged outside the accommodating cavity 13 and is fixedly connected to the first shaft section 421, and the limiting part 43 and the locking part 41 limit the locking piece 4 on the back plate 11.

The first shaft section 421 is arranged on the back plate 11 in a penetrating mode, the back plate 11 forms radial limiting on the first shaft section 421, one end of the first shaft end is connected to the second shaft section 422, the other end of the first shaft end is connected to the limiting part 43 outside the accommodating cavity 13, the second shaft section 422 is matched with the limiting part 43 to form axial limiting on the first shaft section 421, and the limiting part with fixed connection relation between all parts can be integrally limited on the back plate 11 through axial and radial limiting on the first shaft section 421. The limiting piece is prevented from being separated from the backboard 11 when the blocking plate 2 is locked by overcoming the elastic force of the elastic piece 3, and the blocking plate 2 cannot be locked stably and effectively.

In the present embodiment, the limiting portion 43 is a nut 6, and the first shaft section 421 is screwed to the nut 6. The nut 6 has simple structure, low cost and easy arrangement, and is beneficial to saving the cost and simplifying the structure.

Referring to fig. 5, fig. 5 is a schematic view illustrating the installation of the elastic member 3 in fig. 2. The junction box capable of sealing the pipeline hole further comprises a fixed shaft 5, and the fixed shaft 5 is fixed in the accommodating cavity 13. The plugging plate 2 is provided with shaft holes 22 which are penetrated from both sides. The plugging plate 2 is rotatably sleeved outside the fixed shaft 5 through a shaft hole 22. The elastic member 3 includes two torsion springs 31. The two torsion springs 31 are respectively sleeved at the two ends of the fixed shaft 5. The plugging plate 2 is provided with a mounting groove 23. The back plate 11 is provided with a fixing groove 111. One end of the torsion spring 31 is installed in the installation groove 23, and the other end of the torsion spring 31 is installed in the fixing groove 111. Wherein the torsion spring 31 urges the closure plate 2 in a natural state to remain in a closed state.

The plugging plate 2 is rotationally sleeved on the fixed shaft 5 through the shaft hole 22 and rotates, the design enables the rotation of the plugging plate 2 to be more stable and smooth, when the plugging plate 2 is switched from a closed state to an open state, the torsion spring 31 acts on the torsion spring 31, the torsion spring 31 generates torsion force for driving the plugging plate 2 to reset, when the locking piece 4 releases the plugging plate 2, the plugging plate 2 rotates to be covered with the side plate 121 under the driving of the elastic force of the torsion spring 31, the torsion spring 31 has the advantage of being convenient to install, and energy can be stored according to the rotation of the plugging plate 2, so that the automatic sealing of the pipeline hole 1211 can be realized.

Referring to fig. 1 to 4, the axis of the fixed shaft 5 is parallel to the boundary line between the back plate 11 and the side plate 121. In the open state, the locking member 4 acts on the closure plate 2 and causes the closure plate 2 to be attached to the back plate 11.

The setting of dead axle 5 makes the shutoff board 2 can laminate in backplate 11 when being locked, can save the space in the accommodation chamber 13, is convenient for carry out the installation and the follow-up wiring operation of spool.

Referring to fig. 1 to 4, the junction box capable of covering the pipeline hole further comprises a nut 6. Two opposite through holes 122 are provided in the frame 12. Both ends of the fixed shaft 5 pass through the through holes 122 and are screwed to the nuts 6, respectively. The nut 6 abuts against the outer peripheral wall of the housing 12.

The nut 6 is used for limiting the fixed shaft 5, stably fixing the fixed shaft 5 between the frame bodies 12, adapting to the rotating stability requirement of the plugging plate 2, fixing the fixed shaft through the nut 6 in a threaded manner, and being convenient to set and simple in structure.

In this embodiment, the side plate 121 is further provided with a fixing member. The fixing piece is provided with a fixing part. When the plugging plate 2 is covered on the side plate 121, the fixing part moves to form a block on the surface of the plugging plate 2 opposite to the side plate 121, so that the plugging plate 2 is fixed in a closed state.

The fasteners on the side panels 121 help to hold the closure panel 2 stably in the closed condition. This ensures that the pipe hole 1211 is always closed, preventing the closure plate 2 from being opened due to an unexpected operation, and thus preventing the pipe hole 1211 from being stably and effectively closed.

Through the technical content, the opening and closing of the pipeline hole 1211 can be realized by utilizing the plugging plate 2 in the accommodating cavity 13 to rotate, so that the requirements of the pipeline hole 1211 in different procedures can be met, the pipeline is plugged, mortar or foreign matters fall into the pipeline during pouring or plastering construction is avoided, and the plugging effect is good. The setting of elastic component 3 makes shutoff board 2 can carry out automatic shutoff to the wire tube hole under the drive of elastic force, and locking piece 4 is used for locking and releasing at the shutoff board 2 of open state, and is comparatively simple, nimble and laborsaving on the overall operation.

While the present disclosure has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present disclosure may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (9)

1. A junction box capable of closing a pipeline hole, comprising:

the box body comprises a back plate and a frame body, wherein the frame body is connected to one side of the back plate and encloses a containing cavity with an opening, the frame body comprises a side plate, and pipeline holes are formed in the side plate;

the plugging plate is rotatably arranged in the accommodating cavity, a yielding groove is formed in the plugging plate, the plugging plate is switched between an open state and a closed state through rotation, in the open state, the plugging plate is covered on the back plate to enable the pipeline hole to be opened, the yielding groove faces away from the back plate, in the closed state, the plugging plate is covered on the side plate to enable the pipeline hole to be closed, and the yielding groove faces the side plate and is communicated with the pipeline hole;

the elastic piece is arranged in the accommodating cavity and drives the plugging plate to be switched to the closed state;

the locking piece is arranged in the accommodating cavity and used for locking or releasing the plugging plate when the plugging plate is switched to the open state.

2. The junction box capable of covering a pipeline hole according to claim 1, wherein the locking piece is movably arranged in the accommodating cavity, and the locking piece comprises a locking end;

when the plugging plate is covered on the back plate, in the direction perpendicular to the back plate, the projection of the locking end can move to the inner side of the plugging plate, so that the locking end locks the plugging plate between the locking end and the back plate, or the projection of the locking end can move to the outer side of the plugging plate, so that the locking end releases the plugging plate.

3. A junction box capable of covering a pipe hole according to claim 2, wherein said locking member comprises a locking portion;

the two ends of the locking part are respectively a driving end and a locking end, and the driving end is hinged with the back plate;

the rotation of the driving end can drive the projection of the locking end to move to the inner side of the plugging plate or to the outer side of the plugging plate.

4. A junction box capable of covering a pipe hole according to claim 3, wherein said locking member further comprises a hinge shaft;

one end of the hinge shaft is hinged to the back plate, and the other end of the hinge shaft extends into the accommodating cavity;

the locking part extends along the radial direction of the hinge shaft, the driving end of the locking part is fixedly connected to the other end of the hinge shaft, and a space for the plugging plate to enter is formed between the locking part and the backboard.

5. The junction box capable of covering a pipeline hole according to claim 4, wherein the hinge shaft comprises a first shaft section and a second shaft section, and the diameter of the first shaft section is smaller than that of the second shaft section;

the first shaft section is rotatably arranged on the back plate in a penetrating manner;

the second shaft section is arranged in the accommodating cavity, one end of the second shaft section is fixedly connected with the first shaft section, and the other end of the second shaft section extends into the accommodating cavity;

the driving end of the locking part is fixedly connected to the other end of the second shaft section, and the second shaft section enables the interval between the locking part and the backboard;

the locking piece further comprises a limiting part;

the limiting part is arranged outside the accommodating cavity and fixedly connected to the first shaft section, and the limiting part and the locking part limit the locking piece on the backboard.

6. The junction box capable of covering a pipeline hole according to claim 1, further comprising a fixed shaft, wherein the fixed shaft is fixed in the accommodating cavity;

the plugging plate is provided with shaft holes with two through sides;

the plugging plate is rotatably sleeved outside the fixed shaft through the shaft hole;

the elastic piece comprises two torsion springs;

the two torsion springs are respectively sleeved at the two ends of the fixed shaft;

the plugging plate is provided with a mounting groove;

the backboard is provided with a fixing groove;

one end of the torsion spring is arranged in the mounting groove, and the other end of the torsion spring is arranged in the fixing groove;

wherein the torsion spring drives the plugging plate to be kept in the closed state in a natural state.

7. The junction box capable of covering a pipeline hole according to claim 6, wherein the axis of the dead axle is parallel to the boundary line between the back plate and the side plate;

in the open state, the locking piece acts on the plugging plate and enables the plugging plate to be attached to the back plate.

8. The junction box capable of covering a pipe hole according to claim 6, wherein said junction box capable of covering a pipe hole further comprises a nut;

two opposite through holes are formed in the frame body;

the two ends of the fixed shaft respectively penetrate through the through holes and are connected with the nuts;

the nut abuts against the outer peripheral wall of the frame body.

9. The junction box capable of sealing pipeline holes according to claim 1, wherein a fixing piece is further arranged on the side plate;

the fixing piece is provided with a fixing part;

when the plugging plate is covered on the side plate, the fixing part moves to form a block on one surface of the plugging plate, which is opposite to the side plate, so that the plugging plate is fixed in the closed state.