CN112952730A

CN112952730A - Terminal box

Info

Publication number: CN112952730A
Application number: CN202110079881.0A
Authority: CN
Inventors: 李建涛
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-06-11
Anticipated expiration: 2041-01-21
Also published as: CN112952730B

Abstract

The utility model provides a junction box belongs to cable connection technical field. The junction box includes: the box body is provided with an opening end, and the side wall of the box body is provided with a mounting hole penetrating through the side wall of the box body; a wiring module including a first member for passing a cable therethrough and a second member for filling an inner cavity space of the mounting hole, the first member and the second member being detachably mounted in the mounting hole, the first member and the second member together filling the inner cavity space of the mounting hole; and a cover detachably attached to the open end. This openly can accomplish inlet wire cable's increase and decrease operation fast, and not increase cost.

Description

Terminal box

Technical Field

The disclosure relates to the technical field of cable connection, in particular to a junction box.

Background

A junction box is a device for cable splicing. When the cable is long in laying length or a corner is needed during cable laying, the butt joint part of the two cables is covered by the junction box, so that the cable and the connecting cable are protected.

In the related art, the junction box comprises a box body and a stuffing box, wherein a through hole is formed in the wall surface of the box body, and the stuffing box is hermetically installed in the through hole. The stuffing box is a sealing part with an inner hole, and after a cable passes through the inner hole of the stuffing box, the sealing performance between the inner hole and the cable can be ensured. After two cables needing to be butted enter the box body through the stuffing box, the two cables can be butted by adopting the wiring terminals in the box body, so that the aim of protecting the butted parts of the cables is fulfilled.

However, when designing the junction box, it is usually necessary to determine the number of incoming cables and the outer diameter of the cables, so as to determine how many through holes and the size of the through holes are opened on the box body of the junction box, and determine the number and specification of stuffing boxes. In the using process, if the incoming cables need to be added, holes need to be formed in the box body again and stuffing boxes need to be added, so that the cost is increased and the use is inconvenient; if need reduce the cable of inlet wire, can leave unoccupied through-hole on the box, influence the leakproofness.

Disclosure of Invention

The embodiment of the disclosure provides a junction box, which can rapidly complete increase and decrease operations of incoming cables without increasing cost. The technical scheme is as follows:

the disclosed embodiment provides a junction box, which comprises: the box body is provided with an opening end, and the side wall of the box body is provided with a mounting hole penetrating through the side wall of the box body; a wiring module including a first member for passing a cable therethrough and a second member for filling an inner cavity space of the mounting hole, the first member and the second member being detachably mounted in the mounting hole, the first member and the second member together filling the inner cavity space of the mounting hole; and a cover detachably attached to the open end.

In one implementation manner of the embodiment of the present disclosure, the mounting hole is an open hole extending from the open end to the bottom of the box body; the first component comprises a junction block for clamping a cable, a limiting structure is arranged on the outer wall of the junction block, the junction block is arranged in the open hole in a sliding mode along the side wall of the open hole, and the limiting structure of the junction block is configured to be matched with the side wall of the open hole to limit the junction block in the open hole; the second component includes the shutoff piece, be equipped with on the outer wall of shutoff piece limit structure, the shutoff piece is followed the lateral wall of open pore slides and sets up in the open pore, the limit structure of shutoff piece be configured as with the lateral wall cooperation of open pore will the shutoff piece restriction is in the open pore.

In another implementation manner of the embodiment of the present disclosure, the junction block includes a first clamping block and a second clamping block, the first clamping block and the second clamping block both have clamping surfaces, the clamping surfaces of the first clamping block and the second clamping block are both provided with grooves, and when the clamping surfaces of the first clamping block and the second clamping block are butted, the grooves of the first clamping block and the grooves of the second clamping block enclose a clamping groove for clamping a cable.

In another implementation manner of the embodiment of the present disclosure, the opening hole is a rectangular hole, the first clamping block and the second clamping block are triangular prisms, the bottom surface of the triangular prism is a right triangle, the side surface of the hypotenuse of the bottom surface of the triangular prism is the clamping surface, the side surface of the right angle of the bottom surface of the triangular prism is attached to the side wall of the rectangular hole, and the clamping surface of the first clamping block is connected to the clamping surface of the second clamping block to form a quadrangular prism with a rectangular bottom surface.

In another implementation manner of the embodiment of the present disclosure, the opening hole is a rectangular hole, the first clamping block and the second clamping block are rectangular blocks, one side surface of each rectangular block is the clamping surface, the side surfaces of the rectangular blocks located on two sides of the clamping surface are attached to the side walls of the rectangular hole, and the clamping surface of each rectangular block is parallel to the bottom surface of the rectangular hole.

In another implementation manner of the embodiment of the present disclosure, the limiting structure is a limiting protrusion, and a limiting groove matched with the limiting protrusion is arranged on a side wall of the opening hole; or the limiting structure is a limiting groove, and a limiting bulge matched with the limiting groove is arranged on the side wall of the open hole.

In another implementation manner of the embodiment of the present disclosure, the mounting hole is a closed hole on a side wall of the box body; the first component comprises a wiring block used for clamping a cable, the second component comprises a blocking block, the wiring block and the blocking block are detachably mounted in the closed hole, and at least one of the wiring block and the blocking block is a flexible block.

In another implementation manner of the embodiment of the present disclosure, a sealing gasket surrounding the open end is disposed on an end surface of the open end, and the sealing gasket is located between the open end and the box cover.

In another implementation manner of the embodiment of the disclosure, a vertical flange surrounding the opening end is arranged on the outer wall surface of the box body, a first through hole is arranged on the vertical flange, second through holes one-to-one corresponding to the first through holes are arranged on the peripheral edge of the box cover, and the vertical flange is connected with the peripheral edge of the box cover through bolts penetrating through the first through hole and the second through hole.

In another implementation manner of the embodiment of the disclosure, the case cover includes a cover plate and a cylinder, one end of the cylinder is located on a plate surface of the cover plate, the other end of the cylinder is provided with a vertical folded edge, and the second through hole is located on the vertical folded edge.

The beneficial effects brought by the technical scheme provided by the embodiment of the disclosure at least comprise:

the junction box provided by the embodiment of the disclosure comprises a box body, a junction module and a box cover, wherein the box body is provided with an opening end, a mounting hole is further formed in the side wall of the box body, and the mounting hole is used for mounting the junction module. The first member of the junction module is used for passing the cable, namely the first member is used for threading the cable, so that the cable can enter the interior of the box body through the first member. The second component in the wiring module is used for filling the inner cavity space of the mounting hole, namely the second component is used for plugging the mounting hole so as to plug the redundant space after the first component is mounted in the mounting hole. The cover is used to cover the open end to close or open the inner space of the case.

When the junction box is used, the number of cables needing to be led in the junction box is firstly determined, then the number of the first components is determined according to the number of the cables, the first components are installed in the installation holes, the second components are supplemented in redundant space in the installation holes until the second components block the redundant space in the installation holes, namely, all inner cavity space of the installation holes is filled by the first components and the second components together, and the purposes of sealing the side wall of the box body and isolating the external environment are achieved.

If the cables of the incoming lines need to be added, part of the second components can be replaced by the first components, namely, the second components in the mounting holes are taken down and replaced by the first components to be mounted back into the mounting holes, so that the newly added cables can enter the junction box through the first components. Compared with the related technology that the opening is re-opened and the stuffing box is re-added on the opening, the operation difficulty can be retrieved, the purpose of adding the cable can be rapidly completed, no new part is needed, and the cost is reduced; if the cables of the incoming lines need to be reduced, part of the first members can be replaced by the second members, namely the first members in the mounting holes and the cables in the first members are taken down and replaced by the second members to be installed back into the mounting holes, and the space left after the first members are taken down is plugged by the second members, so that the box body can be quickly closed again, and the sealing performance is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural view of a junction box provided in the related art;

fig. 2 is a schematic structural diagram of a junction box provided in an embodiment of the disclosure;

fig. 3 is a top view of a junction box provided by an embodiment of the present disclosure;

FIG. 4 is a front view of a case provided by embodiments of the present disclosure;

FIG. 5 is a top view of a case provided by embodiments of the present disclosure;

FIG. 6 is a schematic structural diagram of a block provided in an embodiment of the present disclosure;

fig. 7 is a front view of a junction block provided by an embodiment of the disclosure;

fig. 8 is a top view of a junction block provided by embodiments of the present disclosure;

fig. 9 is a schematic structural diagram of a junction block provided in an embodiment of the disclosure;

FIG. 10 is a schematic structural diagram of a case provided in the embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a cover plate according to an embodiment of the present disclosure;

fig. 12 is a top view of a cover plate provided by an embodiment of the present disclosure.

The various symbols in the figure are illustrated as follows:

1-box body, 11-opening end, 12-mounting hole, 120-limiting bulge, 121-annular connecting groove, 13-vertical flanging and 130-first through hole;

2-a first component, 21-a junction block, 211-a first clamping block, 212-a second clamping block, 213-a clamping surface, 214-a clamping groove, 22-a limiting groove, 23-a connecting protrusion;

3-a second member, 31-a block;

4-box cover, 40-second through hole, 41-cover plate, 42-barrel and 43-vertical folded edge;

5-a sealing gasket;

a-cable, B-stuffing box and C-connecting terminal.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," "third," and similar terms in the description and claims of the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", "top", "bottom", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

Fig. 1 is a schematic structural diagram of a junction box provided in the related art. As shown in figure 1, the junction box comprises a box body 1 and a stuffing box B, wherein a through hole is formed in the side wall of the box body 1, and the stuffing box B is hermetically arranged in the through hole. Two cables A to be butted penetrate into the box body 1 from inner holes of different stuffing boxes B.

As shown in fig. 1, after two cables a enter the box body 1, the connection terminals C are adopted in the box body 1 for butt joint, so that the butt joint part of the cables a and the connection terminals C of the connection cables a are all accommodated in the box body 1, and the external environment is separated through the box body 1, so that the external environment is prevented from interfering the butt joint part of the cables a, and the cables a are protected.

When the junction box is used, the number of incoming cables A and the outer diameter of the cables A are generally determined, so that the sizes of through holes and through holes formed in a box body 1 of the junction box are determined, and the number and specification types of stuffing boxes B are determined. If an incoming cable A needs to be added, a hole needs to be formed in the box body 1 again, and a stuffing box B needs to be added, so that the cost is increased, and the use is inconvenient; if need reduce the cable A of inlet wire, can leave unoccupied through-hole on box 1, influence the leakproofness.

Fig. 2 is a schematic structural diagram of a junction box provided in an embodiment of the disclosure. As shown in fig. 2, the junction box includes: box 1, wiring module and case lid 4.

Fig. 3 is a top view of a junction box provided by an embodiment of the disclosure. As shown in fig. 2 and 3, the case 1 has an opening end 11, and a mounting hole 12 penetrating the side wall of the case 1 is provided in the side wall of the case 1.

As shown in fig. 2 and 3, the junction module includes a first member 2 for passing the cable a therethrough and a second member 3 for filling the inner space of the mounting hole 12, the first member 2 and the second member 3 are both detachably mounted in the mounting hole 12, and the first member 2 and the second member 3 together fill the inner space of the mounting hole 12.

Wherein the cover 4 is detachably attached to the open end 11.

The junction box provided by the embodiment of the disclosure comprises a box body 1, a junction module and a box cover 4, wherein the box body 1 is provided with an opening end 11, a mounting hole 12 is further formed in the side wall of the box body 1, and the mounting hole 12 is used for mounting the junction module. Wherein the first member 2 of the junction module is used for the cable a to pass through, i.e. the first member 2 is used for threading, so that the cable a can enter the interior of the box body 1 through the first member 2. The second member 3 in the junction module is used for filling the cavity space of the mounting hole 12, that is, the second member 3 is used for blocking the mounting hole 12 to block the redundant space after the first member 2 is mounted in the mounting hole 12. The cover 4 is used to cover the open end 11 to close or open the inner space of the case 1.

When the junction box is used, the number of cables A needing to be led in the junction box is determined firstly, then the number of the first components 2 is determined according to the number of the cables A, the first components 2 are installed in the installation holes 12, the second components 3 are supplemented in redundant space in the installation holes 12 until the redundant space in the installation holes 12 is blocked by the second components 3, namely, all inner cavity space of the installation holes 12 is filled by the first components 2 and the second components 3 together, and therefore the purposes of sealing the side wall of the box body 1 and isolating the external environment are achieved.

If the incoming cable a needs to be added, a part of the second member 3 can be replaced by the first member 2, that is, the second member 3 in the installation hole 12 is removed and replaced by the first member 2 and installed back into the installation hole 12, so that the added cable a can enter the junction box through the first member 2. Compared with the related technology that the opening is re-opened and the stuffing box is re-added on the opening, the operation difficulty can be retrieved, the purpose of adding the cable A can be rapidly completed, no new part is needed, and the cost is reduced; if the incoming cables A need to be reduced, part of the first member 2 can be replaced by the second member 3, namely the first member 2 in the mounting hole 12 and the cables A in the first member 2 are taken down and replaced by the second member 3 to be installed back into the mounting hole 12, and the space left after the first member 2 is taken down is blocked by the second member 3, so that the box body 1 can be quickly re-closed, and the sealing performance is ensured.

Fig. 4 is a front view of a case provided in an embodiment of the present disclosure, and fig. 5 is a plan view of the case provided in the embodiment of the present disclosure. As shown in fig. 4 and 5, the mounting hole 12 is an opening hole extending from the open end 11 toward the bottom of the case 1.

The opening hole is a through hole in the case 1 connected to the opening end 11 of the case 1, that is, the through hole is not closed.

As shown in fig. 2, the first member 2 includes a junction block 21 for clamping the cable a, a position-limiting structure is provided on an outer wall of the junction block 21, the junction block 21 is slidably disposed in the opening along a sidewall of the opening, and the position-limiting structure of the junction block 21 is configured to cooperate with the sidewall of the opening to limit the junction block 21 in the opening.

The junction block 21 is used for clamping the cable a, and the cable a can be fixedly clamped in the junction block 21 while passing through the junction block to prevent the cable a from loosening. The junction block 21 can slide along the side wall of the opening hole to the bottom of the opening hole, that is, the junction block 21 can be adjusted and installed at any position in the opening hole, so that the butt joint position of the cable A can be conveniently adjusted.

When the terminal block 21 is mounted in the opening hole, the terminal block 21 can be directly pushed from the opening end 11 to slide into the opening hole; when the terminal block 21 is taken out from the opening hole, the terminal block 21 can be pulled out from the opening hole. That is, the terminal block 21 can be quickly and easily attached and detached.

Meanwhile, the outer wall of the wiring block 21 is provided with a limiting structure, and the limiting structure can limit the wiring block 21 in an opening hole in the sliding process of the wiring block 21 so as to prevent the wiring block 21 from falling off and improve the connection reliability.

Fig. 6 is a schematic structural diagram of a block plug provided in an embodiment of the present disclosure. As shown in fig. 6, the second member 3 includes a blocking block 31, a position-limiting structure is provided on an outer wall of the blocking block 31, the blocking block 31 is slidably disposed in the opening hole along a sidewall of the opening hole, and the position-limiting structure of the blocking block 31 is configured to cooperate with the sidewall of the opening hole to limit the blocking block 31 in the opening hole.

The blocking block 31 is a block structure without a cavity or a pore on the surface, so that the blocking block 31 can block the open pore after being installed in the open pore to block the internal space and the external environment of the box body 1 and protect the cable A.

Similarly to the junction block 21, when the block 31 is installed in or removed from the opening hole, the block 31 may be directly controlled to slide along the side wall of the opening hole in the opening hole by pushing or pulling. I.e., the block 31, can be quickly and easily disassembled.

Simultaneously, be equipped with limit structure on the outer wall of shutoff piece 31, limit structure can be at the gliding in-process of shutoff piece 31, with shutoff piece 31 restriction in the open pore to prevent that junction block 21 from droing, improve the connection reliability.

Fig. 7 is a front view of a junction block provided in an embodiment of the present disclosure, and fig. 8 is a top view of the junction block provided in an embodiment of the present disclosure. As shown in fig. 7 and 8, the junction block 21 includes a first clamping block 211 and a second clamping block 212, the first clamping block 211 and the second clamping block 212 each have a clamping surface 213, the clamping surfaces 213 of the first clamping block 211 and the second clamping block 212 each have a groove, and when the clamping surfaces 213 of the first clamping block 211 and the second clamping block 212 are butted, the grooves of the first clamping block 211 and the grooves of the second clamping block 212 enclose a clamping groove 214 for clamping the cable a.

The first clamping block 211 and the second clamping block 212 are arranged in the opening hole in a sliding mode, and the clamping surfaces 213 of the first clamping block 211 and the second clamping block 212 are opposite in parallel, so that when the first clamping block 211 and the second clamping block 212 are abutted and attached, grooves in the first clamping block 211 and the second clamping block 212 can be combined into a complete clamping groove 214, and the clamping groove 214 can be used for clamping a cable A so as to fix the cable A between the two clamping blocks and prevent the cable A from loosening.

For example, the size of the grooves of the first and second clamping blocks 211 and 212 may be designed according to the specification of the cable a. The grooves are arc grooves so as to be fully attached to the outer wall surface of the cable A and tightly clamp the cable A.

For example, cable a diameters of 150mm, 185mm, 300mm and 500mm are commonly used in cable a laying. Then 4 types of terminal blocks 21 can be designed, and the inner diameters of the grooves of the two clamping blocks can be 150mm, 185mm, 300mm and 500mm in the 4 types of terminal blocks 21. Thus, the diameter of the holding groove 214 is different for each type of the junction block 21, and the holding groove can be suitable for holding a plurality of different cables a.

As shown in fig. 2 and 4, the opening hole is a rectangular hole, as shown in fig. 2 and 7, the first holding block 211 and the second holding block 212 are both rectangular blocks, one side surface of each rectangular block is a holding surface 213, the side surfaces of each rectangular block located at two sides of the holding surface 213 are attached to the side walls of the rectangular hole, and the holding surfaces 213 of the rectangular blocks are parallel to the bottom surface of the rectangular hole.

In the above implementation manner, the widths of the first clamping block 211 and the second clamping block 212 are the same as the width of the opening hole, so that the two side surfaces of the clamping blocks opposite to the opening hole can be attached to the side wall of the opening hole, that is, each clamping block can be tightly matched with the opening hole, so that the wiring block 21 can completely fill the inner cavity space of the opening hole, and the influence of the gap on the sealing performance is avoided.

As shown in fig. 2, the clamping surface 213 of the rectangular block is parallel to the bottom surface of the rectangular hole, i.e. the first clamping block 211 and the second clamping block 212 are stacked up and down, so that when the box body 1 is pressed by the box cover 4 after the plurality of junction blocks 21 fill the cavity space of the opening hole, the box cover 4 can apply downward acting force to the junction blocks 21 at the opening end 11, thereby enabling the two clamping blocks in each junction block 21 to clamp more tightly, preventing the cable a from loosening and improving the sealing performance.

Illustratively, as shown in fig. 3, 6, 7 and 8, the limiting structure is a limiting groove 22, and as shown in fig. 3 and 4, a limiting protrusion 120 which is matched with the limiting groove 22 is arranged on the side wall of the open hole.

As shown in fig. 7 and 8, for the terminal block 21, the limiting protrusion 120 may be a strip-shaped protrusion, and two opposite sidewalls of the opening hole are respectively provided with one strip-shaped protrusion, and the strip-shaped protrusion extends from the opening end 11 to the bottom of the opening hole on the sidewall of the opening hole. The limiting groove 22 on the junction block 21 can also be a strip-shaped groove extending from one end of the junction block 21 to the other end, so that when the junction block 21 is inserted into the opening, the junction block 21 can slide along the strip-shaped protrusion to guide the junction block 21, and meanwhile, under the limitation of the strip-shaped protrusion and the strip-shaped groove, the junction block 21 can be prevented from sliding from the opening, namely, the junction block 21 is limited in the opening.

As shown in fig. 6, for the plugging block 31, the limiting protrusion 120 may also be a strip-shaped protrusion, the limiting groove 22 may also be a strip-shaped groove, and similarly, the strip-shaped protrusion and the strip-shaped groove may also guide the plugging block 31 and achieve the purpose of limiting the plugging block 31 in the opening hole.

Illustratively, the limiting structure is a limiting protrusion 120, and a limiting groove 22 matched with the limiting protrusion 120 is arranged on the side wall of the open hole.

The limiting protrusion 120 may be a strip protrusion, the strip protrusion is located on the junction block 21 and the plugging block 31, the limiting groove 22 may be a strip groove, the strip groove is located on the side wall of the opening hole, the junction block 21 and the plugging block 31 can be guided, and the purpose of limiting the junction block 21 and the plugging block 31 in the opening hole is achieved.

As shown in fig. 2 and 4, the opening hole is a rectangular hole, and fig. 9 is a schematic structural diagram of a junction block provided in the embodiment of the disclosure. As shown in fig. 9, the first clamping block 211 and the second clamping block 212 are both triangular prisms, the bottom surfaces of the triangular prisms are right-angled triangles, the side surface where the hypotenuse of the bottom surface of the triangular prism is the clamping surface 213, the side surface where the right-angled side of the bottom surface of the triangular prism is attached to the side wall of the rectangular hole, and the clamping surface 213 of the first clamping block 211 and the clamping surface 213 of the second clamping block 212 are butted to form a quadrangular prism, the bottom surface of which is rectangular.

In the above implementation, in the direction parallel to the end face of the open end 11, the length of one side face of each triangular prism parallel to the end face of the open end 11 is the same as the width of the opening hole, so that it is ensured that one side face of each triangular prism is attached to the side wall of the rectangular hole. And two triangular prisms can dock formation quadrangular again, consequently, quadrangular can closely cooperate with two lateral walls of opening hole to make junction block 21 can fill up the inner chamber space of opening hole completely, avoid leaving the space and influence the leakproofness.

As shown in fig. 9, the first clamping block 211 and the second clamping block 212 are stacked up and down, and the clamping surface 213 of the first clamping block 211 and the clamping surface 213 of the second clamping block 212 are disposed opposite to each other, since both clamping blocks are triangular prisms, and the side where the oblique side of the bottom surface is located in the triangular prism is the clamping surface 213, the clamping surface 213 and the bottom surface of the opening hole have an included angle, that is, the two clamping blocks are contacted by the oblique side.

Thus, after the plurality of terminal blocks 21 are filled in the inner cavity space of the opening hole, when the box body 1 is pressed by the box cover 4, the box cover 4 can apply downward acting force to the terminal blocks 21 at the opening end 11, and because the two clamping blocks are matched in an inclined plane, the two clamping blocks have the tendency of moving towards the side wall of the opening hole under the pushing of the downward acting force. Therefore, the clamping of the two clamping blocks can be more tight, the close degree of the fit between the clamping blocks and the side wall of the opening hole can be enhanced, and the sealing performance is improved.

Fig. 10 is a schematic structural diagram of a box provided in the embodiment of the present disclosure. As shown in fig. 10, the mounting hole 12 is a closed hole on the side wall of the case 1; the first member 2 comprises a junction block 21 for clamping the cable a, the second member 3 comprises a blocking block 31, both the junction block 21 and the blocking block 31 are detachably mounted in the closed hole, and at least one of the junction block 21 and the blocking block 31 is a flexible block.

Wherein, the closed hole is a through hole closed on the side wall of the box body 1. The flexible block may be a rubber block so that the flexible block has a certain deformation capability, so that the junction block 21 and the blocking block 31 can be completely embedded into the closed hole.

Illustratively, as shown in fig. 10, the closed holes of the box body 1 are rectangular holes, wherein there are three junction blocks 21 and one blocking block 31. Three terminal blocks 21 and a blocking block 31 just fill the lumen space of the closed hole.

The wiring block 21 and the plugging block 31 are rectangular blocks, a connecting protrusion 23 is arranged on the side wall of each rectangular block, and an annular connecting groove 121 surrounding the inner wall of the closed hole for a circle is arranged on the inner wall of the closed hole. When each rectangular block is fitted into the rectangular hole, one side face having the coupling projection 23 faces the inner wall of the closed hole, and the coupling projection 23 is inserted into the annular coupling groove 121. Because the inner cavity space of the closed hole can be completely filled up by the four rectangular blocks, after the four rectangular blocks are all installed to the closed hole, the side face, facing the closed hole, of each rectangular block is limited by the connecting bulge 23 and the annular connecting groove 121, and the side face, back to the closed hole, of each rectangular block is abutted against the side face of the adjacent rectangular block so as to fix the four rectangular blocks in the closed hole.

When installing each junction block 21 and the plugging block 31, it is necessary to ensure that the last one installed in the closed hole is the flexible block in the junction block 21 and the plugging block 31, and the flexible block has a certain deformation capability, so that the flexible block can be more easily clamped into the remaining space of the closed hole.

As shown in fig. 3 and 5, the end surface of the open end 11 is provided with a sealing gasket 5 surrounding the open end 11, and the sealing gasket 5 is located between the open end 11 and the cover 4. Through set up seal ring 5 between case lid 4 and box 1, can effectively prevent that water from getting into the terminal box from the clearance between case lid 4 and the box 1, guarantee the leakproofness of terminal box, improve the waterproof performance of terminal box.

As shown in fig. 3 and 5, the outer wall surface of the box body 1 is provided with a vertical flange 13 surrounding the opening end 11, the vertical flange 13 is provided with a first through hole 130, the peripheral edge of the box cover 4 is provided with second through holes 40 one-to-one corresponding to the first through holes 130, and the vertical flange 13 is connected with the peripheral edge of the box cover 4 through bolts passing through the first through holes 130 and the second through holes 40.

The outer wall surface of the box body 1 is provided with a vertical flange 13 which surrounds circumferentially, and the vertical flange 13 and the box cover 4 are connected through bolts so as to realize the detachable connection of the box body 1 and the box cover 4. Because the vertical flanges 13 are circumferentially distributed around the box body 1, bolts are also connected around the box body 1 and the box cover 4, and the connection reliability of the box body 1 and the box cover 4 is ensured.

Fig. 11 is a schematic structural diagram of a cover plate provided in an embodiment of the present disclosure, and fig. 12 is a top view of the cover plate provided in the embodiment of the present disclosure. As shown in fig. 11 and 12, the box cover 4 includes a cover plate 41 and a cylinder 42, one end of the cylinder 42 is located on the plate surface of the cover plate 41, the other end of the cylinder 42 is provided with a vertical folding edge 43, and the second through hole 40 is located on the vertical folding edge 43.

The box cover 4 has a certain inner space, so that the junction box can accommodate more parts. The end part of the cylinder 42 is also provided with a vertical folding edge 43, and when the box cover 4 is pressed on the box body 1, the vertical folding edge 43 and the vertical folding edge 13 are butted and attached to increase the contact area of the box cover 4 and the box body 1 and improve the connection reliability.

When the cable a is installed on the junction box provided by the embodiment of the disclosure, firstly, the junction blocks 21 and the blocking blocks 31 with proper quantity are selected according to the quantity and the outer diameter of the cable a, the junction blocks 21 and the blocking blocks 31 are installed in the installation hole 12, the cable a is placed in the clamping groove 214 of the junction blocks 21, and finally, the junction blocks 21 and the blocking blocks 31 are pressed and fixed through the box cover 4.

The wiring module of terminal box that this disclosed embodiment provided adopts the modularized design, and the standard component that centre gripping groove 214 size is different can be made to wiring block 21, can satisfy the demand of different specifications, different quantity cable A inlet wires through the combination of wiring block 21 and blocking piece 31, has very strong flexibility. For the condition that the cable A needs to be added, the plugging block 31 is replaced by the wiring block 21 with the clamping groove 214 suitable for the outer diameter of the cable A, so that the construction cost is greatly reduced. The open end 11 of terminal box is equipped with the side that can closely laminate with the perpendicular hem 43 of case lid 4 around the seal ring 5 of open end 11, simultaneously, the through-hole screw hole setting on perpendicular hem 13 and the perpendicular hem 43 is along the position outside seal ring 5, consequently makes the bolt also install at seal ring 5 along the position outward, can effectively avoid water to leak to the terminal box inside by the through-hole of construction bolt like this, guarantees the leakproofness of terminal box, improves the waterproof performance of terminal box.

Although the present disclosure has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure.

Claims

1. A junction box, comprising:

the box body (1) is provided with an opening end (11), and a mounting hole (12) penetrating through the side wall of the box body (1) is formed in the side wall of the box body (1);

a wiring module including a first member (2) for passing a cable therethrough and a second member (3) for filling an inner cavity space of the mounting hole (12), the first member (2) and the second member (3) each being detachably mounted in the mounting hole (12), the first member (2) and the second member (3) together filling the inner cavity space of the mounting hole (12);

and a cover (4) detachably attached to the open end (11).

2. Junction box according to claim 1, characterized in that said mounting hole (12) is an open hole extending from said open end (11) towards the bottom of said box (1);

the first component (2) comprises a junction block (21) used for clamping a cable, a limiting structure is arranged on the outer wall of the junction block (21), the junction block (21) is arranged in the open hole in a sliding mode along the side wall of the open hole, and the limiting structure of the junction block (21) is configured to be matched with the side wall of the open hole to limit the junction block (21) in the open hole;

the second component (3) includes plugging block (31), be equipped with on the outer wall of plugging block (31) limit structure, plugging block (31) are followed the lateral wall of opening hole slides and sets up in the opening hole, the limit structure of plugging block (31) be configured as with the lateral wall cooperation of opening hole, will plugging block (31) restriction is in the opening hole.

3. The junction box according to claim 2, characterized in that the junction block (21) comprises a first clamping block (211) and a second clamping block (212), the first clamping block (211) and the second clamping block (212) each have a clamping face (213), the clamping face (213) of the first clamping block (211) and the clamping face (213) of the second clamping block (212) each have a groove, and when the clamping face (213) of the first clamping block (211) and the clamping face (213) of the second clamping block (212) are butted, the grooves of the first clamping block (211) and the grooves of the second clamping block (212) enclose a clamping groove (214) for clamping a cable.

4. The junction box of claim 3, wherein the opening hole is a rectangular hole, the first clamping block (211) and the second clamping block (212) are triangular prisms, the bottom surfaces of the triangular prisms are right-angled triangles, the side surface where the hypotenuse of the bottom surfaces of the triangular prisms is located is the clamping surface (213), the side surface where the right-angled edge of the bottom surfaces of the triangular prisms is located is attached to the side wall of the rectangular hole, and the clamping surface (213) of the first clamping block (211) and the clamping surface (213) of the second clamping block (212) are in butt joint to form a quadrangular prism with a rectangular bottom surface.

5. The junction box of claim 3, wherein the opening hole is a rectangular hole, the first clamping block (211) and the second clamping block (212) are rectangular blocks, one side surface of each rectangular block is the clamping surface (213), the side surfaces of the rectangular blocks, which are positioned at two sides of the clamping surface (213), are attached to the side walls of the rectangular hole, and the clamping surfaces (213) of the rectangular blocks are parallel to the bottom surface of the rectangular hole.

6. The junction box according to claim 2, wherein the limiting structure is a limiting protrusion, and a limiting groove matched with the limiting protrusion is arranged on a side wall of the opening hole; or,

the limiting structure is a limiting groove (22), and a limiting protrusion (120) matched with the limiting groove (22) is arranged on the side wall of the opening hole.

7. Junction box according to claim 1, characterized in that said mounting hole (12) is a closed hole on the side wall of said box (1);

the first component (2) comprises a junction block (21) used for clamping a cable, the second component (3) comprises a blocking block (31), the junction block (21) and the blocking block (31) are both detachably installed in the closed hole, and at least one of the junction block (21) and the blocking block (31) is a flexible block.

8. Junction box according to any of claims 1 to 7, characterized in that the end face of the open end (11) is provided with a sealing gasket (5) surrounding the open end (11), the sealing gasket (5) being located between the open end (11) and the lid (4).

9. The junction box according to any one of claims 1 to 7, wherein a vertical flange (13) surrounding the open end (11) is provided on an outer wall surface of the box body (1), a first through hole (130) is provided on the vertical flange (13), a second through hole (40) one-to-one opposite to the first through hole (130) is provided on a peripheral edge of the box cover (4), and the vertical flange (13) is connected to the peripheral edge of the box cover (4) by a bolt passing through the first through hole (130) and the second through hole (40).

10. The junction box according to claim 9, wherein the box cover (4) comprises a cover plate (41) and a cylinder (42), one end of the cylinder (42) is located on the plate surface of the cover plate (41), the other end of the cylinder (42) is provided with a vertical folding edge (43), and the second through hole (40) is located on the vertical folding edge (43).