CN215870630U - Power distribution junction box - Google Patents
Power distribution junction box Download PDFInfo
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- CN215870630U CN215870630U CN202122205628.3U CN202122205628U CN215870630U CN 215870630 U CN215870630 U CN 215870630U CN 202122205628 U CN202122205628 U CN 202122205628U CN 215870630 U CN215870630 U CN 215870630U
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Abstract
The utility model discloses a distribution junction box which comprises a box body, a wiring assembly and a waterproof joint, wherein the wiring assembly is arranged in the box body, the waterproof joint is arranged on the wall surface of the box body, a cable penetrates into the box body from the waterproof joint and is connected with the wiring assembly, the waterproof joint comprises a joint main body, a nut and a sealing ring, the joint main body is integrally cylindrical, one axial end of the joint main body is provided with a locking part, the sealing ring is lined in the locking part of the joint main body, the nut is in threaded connection with the joint main body to extrude the locking part, and the sealing ring comprises a plurality of layers of nested rings which are sequentially nested together from inside to outside. The distribution junction box has the advantages of wide diameter range of adaptable cables, convenience in adjustment, good connection sealing performance, high use reliability and low cost, and effectively avoids the leakage condition.
Description
Technical Field
The utility model relates to the technical field of power distribution equipment, in particular to a power distribution junction box.
Background
The fields of electric power and communication are continuously developed, the demand for power distribution equipment is increasing day by day, and the power distribution junction box is mainly used for power distribution wiring switching of direct current/alternating current (the application range is 0 to +/-500V). Current distribution terminal box adopts built-in mode of connection usually, be provided with water joint on the box body, the cable passes and connects in the box body behind water joint, close the box body after the wiring is accomplished, water joint locking cable is in order to realize whole waterproof, thereby guarantee distribution terminal box is the reliability of outdoor long-term use, in the in-service use, the diameter range change of cable is great, phi 11 ~ 21 mm's cable all can be used, and current water joint is difficult to the guarantee to the connection leakproofness of different diameter cables, the situation of leaking appears easily, thereby influence the reliability of switching function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and the technical task of improving the prior art, provides a distribution junction box, and solves the problems that the diameter range of a cable which can be adapted by the distribution junction box in the prior art is small, and the wiring reliability is influenced by the leakage condition.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
the utility model provides a distribution junction box, includes box body, wiring subassembly and water joint, the wiring subassembly sets up inside the box body, water joint sets up on the box body wall, and the cable penetrates the box body from water joint and is connected with the wiring subassembly, water joint including joint main part, nut and sealing washer, the joint main part is whole to be the tube-shape and its axial one end is equipped with locking portion, the sealing washer inside lining is in the locking portion who connects the main part, the nut with connect the main part spiro union with extrusion locking portion, the sealing washer includes from interior to exterior a plurality of layers of nested rings that are nested together in proper order. The diameter range of the cable which can be adapted by the waterproof connector adopted by the distribution junction box is wider, the inner diameter of the sealing ring can be adjusted according to the actual condition of the diameter of the cable, when the diameter of the cable exceeds the adaptation range of the innermost nested ring, the innermost nested ring is only required to be stripped and drawn out, so that the caliber of the sealing ring is conveniently increased to adapt to the cable with a large diameter, the connection sealing performance is ensured, the reliability of a switching function is ensured, the use is convenient, the adjustment is convenient, the wiring assembly efficiency is ensured, the application range is wide, the waterproof connectors with different specifications do not need to be replaced, and the cost is reduced.
Furthermore, one end of the nested ring close to the inner side in the axial direction is provided with a radially outward protruding limiting edge, and the limiting edge abuts against the end part of the nested ring close to the outer side in the axial direction, so that the nested rings are limited in the axial direction, the nested rings are prevented from being separated due to axial dislocation, and sealing reliability is guaranteed.
Further, the joint main part penetrates and connects in the through-hole of seting up on the box body wall, still be provided with on the box body wall and lean on in joint main part outer wall in order to prevent to connect main part pivoted spacing portion, avoid connecting the main part and take place to rotate and take place not hard up and then lead to sealed inefficacy for the box body, guarantee connection stability improves water-proof effects.
Furthermore, spacing portion be protruding muscle or with joint main part circumference outer wall complex annular cover, protruding muscle and annular cover and box body integrated into one piece, simple structure, it is convenient to implement, and effective guarantee connects the main part and does not take place to rotate, the guarantee sealing nature of connecting.
Furthermore, the wiring assembly comprises a bus bar, a wire pressing piece and a screw, the screw penetrates through a hole formed in the wire pressing piece and is in threaded connection with the bus bar, the screw is provided with a smooth section at the front end of the screw, the smooth section is used for keeping the screw inserted into a screw hole of the bus bar, the screw is prevented from falling off, when the screw is screwed by using a tool to loosen, the force of the tool on the screw is mainly circumferential torsion, when the thread section of the screw is completely withdrawn from the screw hole, the screw is continuously screwed, the screw cannot be axially moved, namely, the smooth section can be always inserted into the screw hole and cannot be withdrawn along the axial direction when the screw is continuously screwed, the screw is effectively prevented from falling off, and the assembling reliability is improved.
Furthermore, the middle part of the wire pressing piece is arc-shaped, so that the bare wires of the fixed cables can be conveniently and effectively connected, the contact sufficiency is improved, and the reliability of electric connection is improved.
Further, the box body includes box main part and lid, the lid passes through interlocking hinged joint with box main part, rotates to connect the reliability high, the situation of deviating from in can not appearing rotating, rotates the structure convenient operation of switching, and the efficient of being convenient for carries out the wiring operation.
Further, integrated into one piece has the installation department on the box body, the installation department includes hanging mounting hole and staple bolt connecting portion, compact structure, and connection reliability is good, cancels traditional metal installation structure, reduces installation work load, effectively improves salt fog resistance in addition when reduce cost.
Compared with the prior art, the utility model has the advantages that:
the distribution junction box has the advantages that the diameter range of the cable which can be adapted to the distribution junction box is wide, the adjustment is convenient, the connection sealing performance is good, the leakage condition is effectively avoided, the use reliability is high, and the cost is low;
wiring convenient operation can effectively avoid the screw to drop, improves the assembly reliability.
Drawings
FIG. 1 is a schematic front side overall view of the power distribution junction box of the present invention;
FIG. 2 is a rear side schematic view of the electrical distribution junction box of the present invention;
FIG. 3 is an internal schematic view of the distribution junction box of the present invention;
FIG. 4 is a schematic sectional view of a waterproof joint;
FIG. 5 is an exploded view of the watertight connector;
FIG. 6 is a schematic view of the wiring assembly;
FIG. 7 is a schematic structural view of the limiting portion in the form of an annular sleeve;
fig. 8 is a schematic structural view of the limiting portion being a rib.
In the figure:
the box body 1, the box body 11, the box cover 12, the interlocking hinge 13, the wall-mounted mounting hole 14, the hoop connecting part 15, the annular sleeve 16, the convex rib 17, the wiring component 2, the bus bar 21, the wire pressing piece 22, the screw 23, the waterproof connector 3, the connector body 31, the locking part 311, the nut 32, the sealing ring 33, the nesting ring 331 and the limiting edge 332.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The distribution junction box disclosed by the embodiment of the utility model can be flexibly adapted to cables with various diameters, the diameter adaptation range of the cables is enlarged, good sealing performance is guaranteed, the leakage condition is avoided, and the reliability of wiring switching is guaranteed.
As shown in fig. 1 to 8, a distribution junction box mainly comprises a box body 1, a wiring assembly 2 and a waterproof joint 3, wherein the wiring assembly 2 is arranged inside the box body 1, the waterproof joint 3 is arranged on the wall surface of the box body 1, a cable penetrates into the box body 1 from the waterproof joint 3 and is connected with the wiring assembly 2, specifically, the waterproof joint 3 comprises a joint main body 31, a nut 32 and a sealing ring 33, the joint main body 31 is cylindrical as a whole, one axial end of the joint main body 31 is provided with a locking part 311, the wall surface of the box body 1 is provided with a through hole, the joint main body 31 penetrates and is connected into the through hole, the outer wall of the joint main body 31 is provided with a flange, the outer diameter of the flange is larger than that of the through hole, the joint main body 31 is also provided with a thread, the joint main body 31 is screwed with a fastening ring, the flange and the fastening ring are respectively positioned at two sides of the wall surface of the box body, the flange and the fastening ring clamp the wall surface of the box body so as to fix the joint main body 31 on the box body 1, the sealing ring 33 is lined in the locking part 311 of the joint main body 31, the nut 32 is screwed with the joint main body 31 to extrude the locking part 311, the locking part 311 contracts towards the radial inner side to extrude the sealing ring 33, and the cable passes through the sealing ring, so that the sealing ring fully wraps the coil to realize sealing;
in this embodiment, in order to increase the diameter range of the adaptive cable, the seal ring 33 includes several layers of nested rings 331, the calibers of the nested rings 331 are sequentially increased and are sequentially nested from inside to outside, so as to form the seal ring 33 with a multilayer structure, in order to avoid axial misalignment between adjacent nested rings 331 to cause sealing implementation, a radially outward protruding limiting edge 332 is provided at one axial end of the nested ring 331 close to the inner side, the limiting edge 332 abuts against the axial end of the nested ring 331 close to the outer side, so that axial limiting of the adjacent nested rings 331 is implemented, and the nested rings 331 can be tightly nested along the radial direction, thereby ensuring good sealing performance. The number of layers of the nesting ring 331 is selected according to the diameter of the cable to be connected, and when the diameter of the cable is small, the number of layers of nesting rings 331 is kept the largest, and when the diameter of the cable is large, the nesting ring 331 is drawn out from the innermost side to increase the inner diameter of the entire seal ring, thereby ensuring smooth passage of the large-diameter cable through the seal ring and ensuring the connection sealing property.
When carrying out the wiring operation, probably lead to connecting main part 31 and rotate by mistake to lead to sealed the realization, in this embodiment, still be provided with on the 1 wall of box body and lean on in connecting main part 31 outer wall in order to prevent to connect main part 31 pivoted spacing portion, it is specific, spacing portion cooperatees in order to realize preventing rotating with the baffle that connects on the main part 31 outer wall, the flange has at least one department in the circumference that connects main part 31 to be the plane, in this embodiment, the flange is the hexagon, and spacing portion specifically is protruding muscle 17 or with connect main part 31 circumference outer wall on flange matched with annular cover 16, annular cover 16 is the hexagon, simple structure, and it is convenient to implement, can effectually prevent to connect main part 31 to rotate, ensures the leakproofness.
In this embodiment, the wiring assembly 2 includes a bus bar 21, a wire pressing piece 22 and a screw 23, the screw 23 passes through a hole formed on the wire pressing piece 22 and is screwed with the bus bar, the middle portion of the wire pressing piece 22 is arc-shaped, which ensures good contact and improves electrical connection reliability, two ends of the wire pressing piece 22 are respectively provided with a hole for the screw to pass through, which ensures connection stability, the screw 23 is provided with a smooth section at the front end thereof, the smooth section is a rod section without surface threads, specifically, the screw 23 is sequentially a smooth section and a threaded section from the front end to the head thereof, when the screw is screwed by using a tool for loosening, the acting force of the tool on the screw is circumferential torsion, when the threaded section of the screw is completely withdrawn from the threaded hole and the screw is continuously screwed, the smooth section is located in the threaded hole on the bus bar 21, the screwing action does not cause the screw to generate axial movement, smooth section can insert all the time in the screw to effectively avoid the screw to drop, improve the assembly reliability, the trouble that the screw dropped and brought for the customer when avoiding high altitude construction, the busbar can adopt panel beating thin wall spare, and locking function can be realized to turn-ups tapping or riveting shorter nut
In this embodiment, box body 1 includes box body 11 and lid 12, lid 12 passes through interlocking hinge 13 with box body 11 and is connected, interlocking hinge 13 has a plurality of shaft hole stress points and realizes the interlocking, can not take place to deviate from in the rotation, has improved connection stability, and still lock fixedly at the closure state through buckle spare and screw mechanism between lid 12 and the box body 11, guarantee closure state's stability to guarantee water-proof effects avoids appearing the situation of leaking. Still integrated into one piece has the installation department on the box body 1, the installation department includes hanging mounting hole 14 and staple bolt connecting portion 15, cancels traditional metal mounting, and reduce cost reduces installation work volume to compact structure, implementation convenience improve salt fog resistance ability.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.
Claims (8)
1. A distribution junction box is characterized by comprising a box body (1), a wiring component (2) and a waterproof joint (3), the wiring component (2) is arranged in the box body (1), the waterproof connector (3) is arranged on the wall surface of the box body (1), the cable penetrates into the box body (1) from the waterproof connector (3) and is connected with the wiring component (2), the waterproof joint (3) comprises a joint main body (31), a screw cap (32) and a sealing ring (33), the joint main body (31) is cylindrical as a whole, and a locking part (311) is arranged at one axial end of the joint main body, the sealing ring (33) is lined in the locking part (311) of the joint main body (31), the nut (32) is screwed with the joint body (31) to press the locking portion (311), the sealing ring (33) comprises a plurality of layers of nested rings (331) which are nested together from inside to outside in sequence.
2. The electrical distribution junction box according to claim 1, wherein the inner nesting ring (331) is provided with a radially outwardly protruding limiting edge (332) at one axial end thereof, said limiting edge (332) abutting an axial end of the outer nesting ring (331).
3. The distribution junction box according to claim 1, wherein the joint main body (31) penetrates into a through hole formed in the wall surface of the box body (1), and a limiting part abutted against the outer wall of the joint main body (31) to prevent the joint main body (31) from rotating is further arranged on the wall surface of the box body (1).
4. The electrical distribution junction box according to claim 3, wherein the limiting portion is a rib (17) or an annular sleeve (16) engaged with a circumferential outer wall of the joint main body (31).
5. The electrical distribution junction box of claim 1, wherein the junction assembly (2) comprises a busbar (21), a crimping tab (22), and a screw (23), the screw (23) passing through a hole made in the crimping tab (22) and being screwed with the busbar, the screw (23) being provided with a smooth section at a front end thereof.
6. The electrical distribution junction box of claim 5, wherein the middle portion of the crimping tabs (22) is arcuate.
7. The distribution junction box according to any of claims 1 to 6, characterized in that the box body (1) comprises a box body (11) and a box cover (12), the box cover (12) being connected with the box body (11) by an interlocking hinge (13).
8. The distribution junction box according to any one of claims 1 to 6, wherein a mounting portion is integrally formed on the box body (1), and the mounting portion includes a wall-hanging mounting hole (14) and a hoop connecting portion (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205628.3U CN215870630U (en) | 2021-09-13 | 2021-09-13 | Power distribution junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122205628.3U CN215870630U (en) | 2021-09-13 | 2021-09-13 | Power distribution junction box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215870630U true CN215870630U (en) | 2022-02-18 |
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ID=80321415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122205628.3U Active CN215870630U (en) | 2021-09-13 | 2021-09-13 | Power distribution junction box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215870630U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780435A (en) * | 2023-06-29 | 2023-09-19 | 电光防爆科技股份有限公司 | Mining explosion-proof cable junction box |
-
2021
- 2021-09-13 CN CN202122205628.3U patent/CN215870630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116780435A (en) * | 2023-06-29 | 2023-09-19 | 电光防爆科技股份有限公司 | Mining explosion-proof cable junction box |
| CN116780435B (en) * | 2023-06-29 | 2024-03-22 | 电光防爆科技股份有限公司 | Mining explosion-proof cable junction box |
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