CN109038423B - Terminal box - Google Patents
Terminal box Download PDFInfo
- Publication number
- CN109038423B CN109038423B CN201810960072.9A CN201810960072A CN109038423B CN 109038423 B CN109038423 B CN 109038423B CN 201810960072 A CN201810960072 A CN 201810960072A CN 109038423 B CN109038423 B CN 109038423B
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- China
- Prior art keywords
- support
- plate
- external
- wiring shell
- bottom cover
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
The invention discloses a junction box, which comprises a bottom cover plate, a wiring shell and three external wires, wherein an opening is formed in the wiring shell, an accommodating groove which is abutted against the bottom cover plate and is used for accommodating the three external wires is formed in the wiring shell, the three external wires which are distributed in a delta shape penetrate out of one end of the wiring shell, and the periphery of the wiring shell is provided with an outwards-protruding V-shaped structure; further, because the triangular prism structure is formed between the V profile of wiring shell periphery and the end cover plate, for current cube or cuboid structure, the volume of wiring shell reduces to some extent. Therefore, the junction box occupies a smaller installation space and has a more compact structure.
Description
Technical Field
The invention relates to the field of electric elements, in particular to a junction box.
Background
Junction boxes are transition connection elements generally connected between main lines and branch lines to protect stable connections between the main lines and the branch lines, and are widely applied to the fields of construction, traffic, manufacturing and the like, so that improvement of the junction boxes is particularly necessary.
Taking the junction box applied to the rail transit vehicle as an example, with the high-speed development of rail transit, the rail transit vehicle gradually develops towards the direction of compactness, light weight and the like. However, as shown in fig. 1, the junction box connected to the traction motor of the rail transit vehicle generally has three cables 01 externally connected to the branch circuit, and the three cables 01 are generally linearly distributed, and accordingly, the junction box for protecting the cables 01 needs to provide a large space to accommodate the three cables 01 arranged side by side, so that the volume of the junction box is large; further, the outer circumference of the junction box is generally square or rectangular, further making the junction box bulky.
Therefore, the existing junction box occupies a large installation space and is not compact in structure.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a junction box which occupies a small installation space and has a compact structure.
The specific scheme is as follows:
the invention provides a junction box which comprises a bottom cover plate, a wiring shell and three external wires, wherein an opening is formed in the wiring shell and is abutted against the bottom cover plate so as to accommodate an accommodating groove of the three external wires, and the three external wires distributed in a shape like a Chinese character 'pin' penetrate out of one end of the wiring shell; the periphery of the wiring shell is provided with a V-shaped structure protruding outwards.
Preferably, the wiring shell includes respectively for end flap reverse slope sets up and cross-linked first curb plate and second curb plate, first curb plate with contained angle between the second curb plate is the obtuse angle, the wiring shell still including relative setting and respectively with the tip of first curb plate with the tip correspondence of second curb plate links to each other in order to form the first end plate and the second end plate of holding tank.
Preferably, the first side plate or the second side plate is provided with a transparent window penetrating in the thickness direction to observe the accommodating groove.
Preferably, the cover further comprises a cover which is detachably connected with the outer edge of the transparent window so as to open or close the transparent window.
Preferably, still including be fixed in the holding tank be used for supporting three the external connection makes three the external connection is the branch line frame that the article word form distributes.
Preferably, the wire support frame includes:
the supporting plate is fixedly connected with the base;
the first support, the second support and the third support are vertically arranged at the edge of one side of the supporting plate and are sequentially distributed along the corresponding edge of the supporting plate in a staggered manner;
the second support is arranged between the first support and the third support, the heights of the first support and the third support are equal, and the second support is higher than the first support and the third support respectively.
Preferably, still include three be used for corresponding connection in motor and three lead-out wire between the external connection, further include three groups correspond connect in the lead-out wire with cable junction module between the external connection, every group cable junction module including each other can dismantle connect and respectively with the lead-out wire with first line nose and second line nose that the external connection links to each other.
Preferably, the bottom of the bottom cover plate is provided with a boss which is matched and connected with the base.
Preferably, the cable connecting component further comprises an insulating layer respectively coated on the peripheries of the branch frame, the outgoing line, the external connection line and the cable connecting component.
Preferably, the sealing device also comprises a sealing element which is arranged between the bottom cover plate and the base to seal the joint of the bottom cover plate and the base.
Compared with the background art, the invention provides a junction box which comprises a bottom cover plate, a wiring shell and three external wires, wherein an opening is formed in the wiring shell and abuts against the bottom cover plate to contain an accommodating groove of the three external wires, and the three external wires distributed in a shape like a Chinese character 'pin' penetrate out of one end of the wiring shell; the periphery of the wiring shell is provided with a V-shaped structure protruding outwards.
Because three the external connection is the distribution of article word form, is favorable to reducing and is used for holding three the external connection the holding tank volume is favorable to reducing naturally the volume of wiring shell.
And because the periphery of the junction box is provided with the V-shaped structure protruding outwards, the V-shaped surface of the junction box and the bottom cover plate are favorable for forming a triangular prism structure, and compared with the existing cube or cuboid, the triangular prism structure is favorable for reducing the volume of the junction box provided by the invention.
Therefore, the volume of the junction box provided by the invention is reduced, and the space for installing the junction box is reduced, so that the occupied installation space is smaller and the structure is more compact.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional junction box;
FIG. 2 is a schematic structural diagram of a junction box according to an embodiment of the present invention;
FIG. 3 is an assembled view of the remaining components of FIG. 2 with portions of the splice housing removed;
FIG. 4 is an assembled view of the housing, external wires, support frame, lead-out wires and cable connection assembly;
FIG. 5 is an assembled view of the bottom cover plate and the wire connecting housing;
fig. 6 is a schematic structural view of the bottom cover plate in fig. 2.
The reference numbers are as follows:
a cable line 01;
the cable connector comprises a bottom cover plate 1, a wiring shell 2, an external wire 3, a perspective window 4, a sealing cover 5, a wire support frame 6, an outgoing wire 7, a cable connecting assembly 8, a boss 9, a machine base 10 and a sealing element 11;
an accommodating tank 101;
a first side plate 21, a second side plate 22, a first end plate 23, and a second end plate 24;
a support plate 61, a first bracket 62, a second bracket 63, and a third bracket 64;
a first line nose 81 and a second line nose 82.
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.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 2 to 6, fig. 2 is a schematic structural diagram of a junction box according to an embodiment of the invention; FIG. 3 is an assembled view of the remaining components of FIG. 2 with portions of the splice housing removed; FIG. 4 is an assembled view of the housing, external wires, support frame, lead-out wires and cable connection assembly; FIG. 5 is an assembled view of the bottom cover plate and the wire connecting housing; fig. 6 is a schematic structural view of the bottom cover plate in fig. 2.
The embodiment of the invention discloses a junction box, which comprises a bottom cover plate 1, a wiring shell 2 and three external connecting wires 3, wherein an accommodating groove 101 with an opening abutting against the bottom cover plate 1 to accommodate the three external connecting wires 3 is formed in the wiring shell 2, the three external connecting wires 3 distributed in a delta shape penetrate out from one end of the wiring shell 2, and the periphery of the wiring shell 2 is provided with an outward-convex V-shaped structure; further, because a triangular prism structure is formed between the V-shaped surface of the periphery of the wiring shell 2 and the bottom cover plate 1, the volume of the wiring shell 2 is reduced compared with the existing cubic or rectangular structure. Therefore, the junction box occupies a smaller installation space and has a more compact structure.
In this embodiment, preferably, the terminal case 2 includes a first side plate 21, a second side plate 22, a first end plate 23, and a second end plate 24 so as to form the receiving groove 101.
The first side plate 21 and the second side plate 22 are respectively arranged obliquely in opposite directions with respect to the bottom cover plate 1 and are cross-connected to form an outwardly convex V-shaped structure. The included angle between the first side plate 21 and the second side plate 22 is an obtuse angle, so that the height of the junction box is lower than that of the existing junction box, and the volume of the junction box is reduced. In addition, first curb plate 21 and second curb plate 22 all still include along vertical direction towards the vertical turn-ups of bottom flap 1 extension and counterbalance with bottom flap 1, and vertical turn-ups specifically sets up according to actual conditions.
It should be noted that, preferably, the inside angle between the first side plate 21 and the bottom cover plate 1 is equal to the inside angle between the second side plate 22 and the bottom cover plate 1. The first side plate 21 and the second side plate 22 are made of metal steel plates and are fixedly connected into a whole in a welding mode, so that the weight and the size of the junction box are further reduced, and the occupied space is favorably reduced. Of course, the material and connection manner of the first side plate 21 and the second side plate 22 are not limited thereto.
The first end plate 23 is connected with the first end of the first side plate 21 and the first end of the second side plate 22 at the same time, and the outer edges of the first end plate 23 are respectively attached to the annular closed openings surrounded by the first side plate 21, the second side plate 22 and the bottom cover plate 1; similarly, a second end panel 24 is connected to both the second end of the first side panel 21 and the second end of the second side panel 22, and has the same structure as the first end panel 23. In this embodiment, the first end plate 23 and the second end plate 24 are both formed by rolling metal plates, and both are fixedly connected with the first side plate 21, the second side plate 22 and the bottom cover plate 1 as a whole by welding.
It should be noted that, in this embodiment, the first end plate 23 and the second end plate 24 are alternatively provided with three through holes distributed in a delta shape and used for passing three external wires 3, so as to improve the space utilization of the accommodating groove 101. In this particular embodiment, the three through holes provided in the first end plate 23 or in the second end plate 24 are typically three threaded holes.
Correspondingly, the invention also comprises three screwing sleeves which are respectively arranged on the three external wires 3 so as to prevent the external wires 3 from swinging radially relative to the junction box. In this embodiment, the screwing sleeve includes a first connecting sleeve connected to the threaded hole, a second connecting sleeve connected to the first connecting sleeve, and a fixing sleeve disposed between the first connecting sleeve and the second connecting sleeve and sleeved on the outer periphery of the external connection wire 3. The fixed sleeve is provided with a conical structure, and the outer diameter of the small-diameter end of the fixed sleeve is adjusted by adjusting the distance between the first connecting sleeve and the second connecting sleeve, so that the fixed sleeve clamps the corresponding external connecting wire 3. Wherein, the periphery of the both ends of first adapter sleeve is equipped with the external screw thread that links to each other with above-mentioned screw hole and second adapter sleeve respectively, and first adapter sleeve and second adapter sleeve are made by metal material. The fixed sleeve is made of materials such as plastics, rubber and the like so as to increase the friction force between the fixed sleeve and the external connection wire 3 and ensure the stable connection of the external connection wire 3. Of course, the structure of the turnbuckle is not limited thereto.
In order to facilitate maintenance of the junction box, the first side plate 21 or the second side plate 22 is provided with a transparent window 4 penetrating in the thickness direction so as to observe the accommodating groove 101. In this embodiment, the transparent window 4 is preferably a rectangular through hole, but is not limited thereto.
The present invention further includes a cover 5 detachably coupled to the outer edge of the see-through window 4 to selectively open or close the receiving groove 101, in consideration of safety, etc. Specifically, a plurality of threaded holes distributed annularly are arranged at the edge of the sealing cover 5 and the edge of the perspective window 4, so that the sealing cover 5 is fixed on the perspective window 4 by bolts and nuts. Of course, the structure of the cover 5 and the transparent window 4 is not limited thereto.
In order to further fix the three external wires 3 relative to the wiring shell 2, the invention further comprises a wire support frame 6, wherein the wire support frame 6 is fixed in the accommodating groove 101 so as to support the three external wires 3 and enable the three external wires 3 to be distributed in a shape like a Chinese character 'pin'. In this embodiment, the supporting frame 6 includes a supporting plate 61 fixedly connected to the base 10, and further includes a first bracket 62, a second bracket 63, and a third bracket 64 vertically disposed at one side edge of the supporting plate 61 and sequentially distributed along a corresponding edge of the supporting plate 61 in a staggered manner. The support plate 61 is detachably fixed on the base 10 by bolts and nuts, the second bracket 63 is arranged between the first bracket 62 and the third bracket 64, the first bracket 62 and the third bracket 64 have the same height, and the second bracket 63 is respectively higher than the first bracket 62 and the third bracket 64. Specifically, first support 62, second support 63 and third support 64 all are the L type, and the vertical support section that also the three all contain and link to each other with backup pad 61 and the horizontal support section that is used for external connection 3 to offset. Specifically, the three external wires 3 are all bound to the horizontal support section by a binding band.
Whereas the junction box is normally associated with an electric motor, the invention also comprises three outgoing lines 7 for corresponding connection between the electric motor and the three external connections 3. Correspondingly, the bottom cover plate 1 is provided with three circular through holes for the three outgoing lines 7 to correspondingly pass through.
In order to further reduce the volume of the accommodating groove 101, the present invention further includes three cable connecting assemblies 8 correspondingly connected between the outgoing line 7 and the external line 3, each cable connecting assembly 8 includes a first line lug 81 and a second line lug 82 respectively correspondingly connected with the outgoing line 7 and the external line 3, and the first line lug 81 and the second line lug 82 are detachably connected together by a bolt and a nut so that the first line lug 81 and the second line lug 82 are communicated, although the connection manner between the first line lug 81 and the second line lug 82 is not limited thereto. Specifically, the first lug 81 is welded to the outgoing line 7, and the second lug 82 is welded to the external connection 3, however, the welding between the first lug 81 and the outgoing line 7 and between the second lug 82 and the external connection 3 may be replaced by crimping, bolting, and the like, and the purpose of implementing the present invention is not affected.
The invention also comprises a boss 9 arranged at the bottom of the bottom cover plate 1, so as to penetrate through the sealing element 11 to be in contact with the machine base 10 to realize grounding, and the safety is improved. In addition, the lug 9 is contacted with the sealing element 11 to improve the pretightening force of the lug boss 9, so that the anti-loosening function is realized; meanwhile, the boss 9 can also cooperate with the sealing element 11 to further perform a sealing function, so that the safety is further improved.
In view of the wide application field of the junction box, in order to improve the adaptability of the junction box, the invention also comprises insulating layers respectively coated on the peripheries of the branch wire frame 6, the outgoing wire 7, the external connection wire 3 and the cable connection assembly 8, thereby realizing the waterproof effect and being beneficial to dust prevention so as to reduce the risk of safety accidents caused by electric leakage. Meanwhile, the insulating layer is beneficial to shortening the distance between each conductive part, so that the structure between each conductive part is more compact, and the size of the wiring shell 2 is further reduced, so that the occupied installation space is further reduced.
The present invention further includes a sealing member 11 provided between the lower cover plate 1 and the housing 10 so as to seal the lower cover plate 1 and the housing 10. Preferably, the sealing element 11 is preferably a rubber pad, the edge of which is provided with a groove that cooperates with the boss 9 in order to improve the sealing performance. Of course, the structure and material of the sealing element are not limited to this.
The terminal box provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in this document by applying specific examples, and the description of the above examples is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (4)
1. The junction box is characterized by comprising a bottom cover plate (1), a wiring shell (2) and three external wires (3), wherein an opening is formed in the wiring shell (2) and abuts against the bottom cover plate (1) to accommodate an accommodating groove (101) of the three external wires (3), and the three external wires (3) distributed in a shape like a Chinese character 'pin' penetrate out of one end of the wiring shell (2); the periphery of the wiring shell (2) is provided with a V-shaped structure protruding outwards; the wire support frame is fixed in the accommodating groove (101) and used for supporting the three external wires (3) so that the three external wires (3) are distributed in a shape like a Chinese character 'pin'; the motor is characterized by further comprising three outgoing lines (7) correspondingly connected between the motor and the three external lines (3), three groups of cable connecting assemblies (8) correspondingly connected between the outgoing lines (7) and the external lines (3), three screwing sleeves respectively installed on the three external lines (3) and sealing elements (11) used for being arranged between the bottom cover plate (1) and the base (10) to seal the connection between the bottom cover plate and the base, wherein each group of cable connecting assemblies (8) comprises a first wire lug (81) and a second wire lug (82) which are detachably connected with each other and respectively connected with the outgoing lines (7) and the external lines (3);
the bottom of the bottom cover plate (1) is provided with a boss (9) which is matched and connected with the machine base (10);
the wiring shell (2) comprises a first side plate (21) and a second side plate (22) which are oppositely arranged and connected in a cross mode relative to the bottom cover plate (1), an included angle between the first side plate (21) and the second side plate (22) is an obtuse angle, the wiring shell (2) further comprises a first end plate (23) and a second end plate (24) which are oppositely arranged and respectively connected with the end portion of the first side plate (21) and the end portion of the second side plate (22) correspondingly to form the accommodating groove (101), and three through holes which are distributed in a shape of a Chinese character 'pin' and used for allowing three external wires (3) to pass through are alternatively arranged on the first end plate (23) and the second end plate (24);
each screwing sleeve comprises a first connecting sleeve connected with the threaded holes of the first end plate (23) or the second end plate (24), a second connecting sleeve connected with the first connecting sleeve, and a fixing sleeve arranged between the first connecting sleeve and the second connecting sleeve and sleeved on the periphery of the external connection line (3), and the fixing sleeve has a conical structure;
the supporting frame (6) comprises a supporting plate (61) fixedly connected with the base (10), and a first support (62), a second support (63) and a third support (64) which are vertically arranged at one side edge of the supporting plate (61) and are sequentially distributed along the corresponding edge of the supporting plate (61) in a staggered manner; the second support (63) is arranged between the first support (62) and the third support (64), the heights of the first support (62) and the third support (64) are equal, and the second support (63) is higher than the first support (62) and the third support (64) respectively.
2. The junction box according to claim 1, wherein the first side plate (21) or the second side plate (22) is provided with a see-through window (4) penetrating in a thickness direction to observe the receiving groove (101).
3. The junction box according to claim 2, further comprising a cover (5) detachably connected to an outer edge of the see-through window (4) to open or close the see-through window (4).
4. The junction box according to claim 3, further comprising insulating layers respectively covering peripheries of the branch frame (6), the outgoing line (7), the external connection line (3), and the cable connection assembly (8).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960072.9A CN109038423B (en) | 2018-08-22 | 2018-08-22 | Terminal box |
| PCT/CN2018/104325 WO2020037718A1 (en) | 2018-08-22 | 2018-09-06 | Junction box |
| IL279672A IL279672A (en) | 2018-08-22 | 2020-12-22 | Junction box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810960072.9A CN109038423B (en) | 2018-08-22 | 2018-08-22 | Terminal box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038423A CN109038423A (en) | 2018-12-18 |
| CN109038423B true CN109038423B (en) | 2021-09-28 |
Family
ID=64626807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810960072.9A Active CN109038423B (en) | 2018-08-22 | 2018-08-22 | Terminal box |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN109038423B (en) |
| IL (1) | IL279672A (en) |
| WO (1) | WO2020037718A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314860B (en) * | 2021-06-07 | 2024-03-08 | 公牛集团股份有限公司 | Junction box |
| CN114362424B (en) * | 2021-12-15 | 2024-04-19 | 中车永济电机有限公司 | High-speed self-ventilation traction motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762731A (en) * | 2014-12-19 | 2016-07-13 | 海洋王照明科技股份有限公司 | Encircling type three-core junction box |
| CN206250704U (en) * | 2016-11-25 | 2017-06-13 | 华亭众一兴旺管业有限公司 | A kind of porous threading collection spool of prism-shaped |
| CN206389077U (en) * | 2017-01-17 | 2017-08-08 | 中车株洲电机有限公司 | Traction electric machine cable lateral frame |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764382A (en) * | 2008-12-25 | 2010-06-30 | 乐金电子(天津)电器有限公司 | Electric source connecting box of compressor |
| CN201490642U (en) * | 2009-07-03 | 2010-05-26 | 中冶京唐建设有限公司 | PVC threading pipe and pipe joint thereof |
| JP6135934B2 (en) * | 2014-01-22 | 2017-05-31 | 株式会社オートネットワーク技術研究所 | Switching device |
| CN206116728U (en) * | 2016-07-16 | 2017-04-19 | 东莞市三义五金塑胶制品有限公司 | Novel power connection |
| CN206116654U (en) * | 2016-07-29 | 2017-04-19 | 东莞市三义五金塑胶制品有限公司 | Article suffix power connection |
| CN206422637U (en) * | 2017-02-15 | 2017-08-18 | 中车株洲电机有限公司 | A kind of terminal box |
| CN206775051U (en) * | 2017-06-08 | 2017-12-19 | 宁波明禾新能源科技有限公司 | A kind of terminal junction box easy for installation |
| CN207638060U (en) * | 2017-12-20 | 2018-07-20 | 广东鸿灏实业有限公司 | A kind of integral type C13 connector internal frames |
| CN108631226A (en) * | 2018-04-27 | 2018-10-09 | 芜湖爱梦网络科技有限公司 | The fixing device of core of a cable |
-
2018
- 2018-08-22 CN CN201810960072.9A patent/CN109038423B/en active Active
- 2018-09-06 WO PCT/CN2018/104325 patent/WO2020037718A1/en active Application Filing
-
2020
- 2020-12-22 IL IL279672A patent/IL279672A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105762731A (en) * | 2014-12-19 | 2016-07-13 | 海洋王照明科技股份有限公司 | Encircling type three-core junction box |
| CN206250704U (en) * | 2016-11-25 | 2017-06-13 | 华亭众一兴旺管业有限公司 | A kind of porous threading collection spool of prism-shaped |
| CN206389077U (en) * | 2017-01-17 | 2017-08-08 | 中车株洲电机有限公司 | Traction electric machine cable lateral frame |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109038423A (en) | 2018-12-18 |
| WO2020037718A1 (en) | 2020-02-27 |
| IL279672A (en) | 2021-03-01 |
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