CN107947071B - Shielding waterproof structure of high-voltage junction box and mounting and fixing method - Google Patents
Shielding waterproof structure of high-voltage junction box and mounting and fixing method Download PDFInfo
- Publication number
- CN107947071B CN107947071B CN201711371583.9A CN201711371583A CN107947071B CN 107947071 B CN107947071 B CN 107947071B CN 201711371583 A CN201711371583 A CN 201711371583A CN 107947071 B CN107947071 B CN 107947071B
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- CN
- China
- Prior art keywords
- shielding
- junction box
- ring
- cable
- metal shielding
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Classifications
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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
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0015—Gaskets or seals
Abstract
The invention discloses a shielding waterproof structure and an installation and fixation method, relates to a shielding waterproof structure and an installation and fixation method mainly aiming at a high-voltage junction box, and aims to solve the problems of complex structure, insufficient simplicity and convenience in assembly, relatively high production cost and the like of the conventional device. The key points of the invention include: the cable junction box comprises a junction box body (1), a metal shielding ring (2), a rubber gasket (3) and a cable clamp (4), wherein a shielding cavity groove (5) is formed in an outlet of the junction box body (1), the metal shielding ring (2) is tightly locked on a cable wire penetrating out of the shielding cavity groove (5), the rubber gasket (3) is arranged on the outer ring of the metal shielding ring (2), the metal shielding ring (2) and the rubber gasket (3) form an integrated stable structure in the shielding cavity groove (5), the cable clamp (4) is clamped on the rubber gasket (3) and is connected with the outlet of the junction box body (1), and the cable clamp (4) and the integrated stable structure seal the shielding cavity groove (5) together.
Description
Technical Field
The invention belongs to the field of electric automobiles, and relates to a shielding waterproof structure and a mounting and fixing method, in particular to a shielding waterproof structure of a high-voltage junction box and a mounting and fixing method.
Background
At present, a high-voltage power cable is an indispensable component for the whole electric automobile to run, and as the high voltage and the high current passing through the high-voltage power cable are very easy to interfere the normal running of other parts in the automobile, the performance of the whole electric automobile can be directly influenced by the whole shielding effect of the high-voltage wire. The high-voltage junction box is used as a device for completing the output and distribution of the high-voltage power supply of the power battery on the electric automobile, and is well shielded and waterproof, so that the protection of the branch electric appliance can be simply and effectively realized, and the performance of the electric automobile is improved.
In the prior art, the shielding structure of the high-voltage junction box is composed of a copper ring and a metal claw, the structure is complex, the cost is high, meanwhile, the existing waterproof structure is formed by extruding a rubber sealing gasket after assembling two mutually matched plastic cable clamps, reworking is caused by losing a waterproof effect due to error of the assembling sequence of the cable clamps in actual operation, the labor cost is increased, and the assembling process is not simple and convenient enough.
Disclosure of Invention
The invention aims at: aiming at the problems, the shielding waterproof structure of the high-voltage junction box is provided for solving the problems of complex structure, insufficient assembly, relatively high production cost and the like of the conventional device.
The technical scheme adopted by the invention is as follows:
the cable clamp is clamped on the rubber gasket and connected with the outlet of the junction box, and the cable clamp and the integrated stable structure seal the shielding cavity groove together.
Further, the metal shielding ring is a pipe clamp with a C-shaped cylindrical structure, two arc-shaped sheets are symmetrically arranged at the axial opening end of the metal shielding ring, and at least one buckle is arranged at the left radial end and the right radial end of the metal shielding ring.
Further, when the metal shielding ring is tightly locked on the cable wire, the buckle is clamped on the cable wire for fastening, and the movable ends of the two symmetrically arranged arc-shaped sheets are folded from two sides to the middle and are tightly attached to the outer surface of the C-shaped cylinder to play a role in enclasping.
Further, the rubber gasket and the cable are flexible structures having a certain amount of compression on the outer surfaces.
Further, the outer diameter of the cable is larger than the inner diameter of the metal shielding ring, and the cable is connected with the metal shielding ring through interference fit; the outer diameter of the metal shielding ring is larger than the inner diameter of the rubber gasket, and the metal shielding ring is connected with the rubber gasket through interference fit.
Further, the rubber gasket is fully contacted with the inner side wall of the cable clamp under the extrusion of the metal shielding ring.
Further, the cable clamp is matched with the size of the outlet of the junction box, and is tightly connected through interference fit.
Further, through holes for the cables to pass through are correspondingly formed in the cable clamp and the shielding cavity groove, and the size of the through holes is matched with the size of the cables separated from the junction box.
Further, through holes in the cable clamp and the shielding cavity groove are coaxial with the cable wire, the metal shielding ring and the rubber gasket.
The invention also provides a method for installing and fixing the shielding waterproof structure of the high-voltage junction box, which comprises the following steps:
step 1: a metal shielding ring is arranged on a cable wire at the outlet of the junction box through interference fit;
step 2: a rubber gasket is arranged on the outer ring of the metal shielding ring through interference fit;
step 3: placing a shielding waterproof structure consisting of a metal shielding ring and a rubber gasket in a shielding cavity groove;
step 4: the cable clamp is clamped on the rubber gasket and connected with the outlet of the junction box through interference fit, so that the position of the shielding waterproof structure formed by the metal shielding ring and the rubber gasket is fixed.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. the invention has fewer used components, the metal shielding ring is mostly made of copper, the rubber gasket is made of common silicon rubber, and the invention is economical and practical, and well saves the production cost of the components;
2. the cable, the metal shielding ring and the rubber gasket are combined into an integrated stable structure through interference fit, so that the requirements on shielding and water resistance can be met at the same time. The automatic wire outlet device has the advantages of being simple in structure, convenient and fast to assemble, optimizing a traditional wire outlet mode, simplifying a process flow, saving labor cost and avoiding the possible reworking in the prior art.
Drawings
The invention will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a cross-sectional view of a shielding waterproof structure of a high voltage junction box;
FIG. 2 is an enlarged view of the region A-A' of FIG. 1;
FIG. 3 is a front view of a metallic shield ring;
FIG. 4 is a right side view of the metallic shield ring of FIG. 3;
the marks in the figure: 1 is a junction box; 2 is a metal shielding ring; 3 is a rubber gasket; 4 is a cable clamp; 5 is a shielding cavity groove; 21 is an arc-shaped sheet; and 22 is a buckle.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
Any feature disclosed in this specification may be replaced by alternative features serving the same or equivalent purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.
The invention fixes the optimized shielding waterproof structure on the high-voltage junction box by a simple and easy-to-operate installation and fixation method so as to simultaneously meet the requirements of shielding and waterproofing the cable of the junction box, and specifically comprises the following steps:
step 1: a metal shielding ring 2 is arranged on a cable wire at the outlet of the junction box 1 through interference fit;
step 2: a rubber gasket 3 is arranged on the outer ring of the metal shielding ring 2 through interference fit;
step 3: a shielding waterproof structure consisting of a metal shielding ring 2 and a rubber gasket 3 is arranged in a shielding cavity groove 5;
step 4: the cable clamp 4 is clamped on the rubber gasket 3 and is connected with the outlet of the junction box 1 through interference fit, so that the shielding waterproof structure formed by the metal shielding ring 2 and the rubber gasket 3 is fixed in position.
An embodiment of the device is shown in fig. 1, an optimized shielding waterproof structure is arranged and fixed on a junction box in the area A-A' according to the method, an enlarged view of the device is shown in fig. 2, the device comprises a junction box 1, a metal shielding ring 2, a rubber gasket 3 and a cable clamp 4, a shielding cavity groove 5 is arranged on an outlet of the junction box 1, the metal shielding ring 2 is tightly locked on a cable wire penetrating through the shielding cavity groove 5, the rubber gasket 3 is arranged on the outer ring of the metal shielding ring 2, the metal shielding ring 2 and the rubber gasket 3 form an integrated stable structure in the shielding cavity groove 5, the cable clamp 4 is clamped on the rubber gasket 3 and connected with an outlet of the junction box 1, and the cable clamp 4 and the integrated stable structure jointly seal the shielding cavity groove 5.
The metal shielding ring 2 is a pipe clamp with a C-shaped cylindrical structure, two arc-shaped sheets 21 are symmetrically arranged at the axial opening end of the pipe clamp, and at least one buckle 22 is arranged at the left and right radial ends of the pipe clamp; when the metal shielding ring 2 is tightly locked on the cable, the buckle 22 is clamped on the cable for fastening, and the movable ends of the two symmetrically arranged arc-shaped sheets 21 are folded from two sides to the middle and are tightly attached to the outer surface of the C-shaped cylinder for tightly holding. In a more specific embodiment, as shown in fig. 3 and fig. 4, three buckles 22 are arranged at the left and right radial ends of the metal shielding ring 2, so that the connection between the metal shielding ring 2 and a cable is more tight, and the metal shielding ring 2 is made of copper which is commonly and easily obtained, so that the manufacturing is simple and convenient, and the production cost can be well controlled.
The rubber grommet 3 and the cable conductor are flexible structures with a certain amount of compression on the outer surface. In a more specific embodiment, the rubber gasket 3 is a common silicon rubber waterproof gasket, which is simple in material, good in waterproof tightness and quite low in cost.
In a more specific embodiment, the outer diameter of the cable is larger than the inner diameter of the metal shielding ring 2, and the cable is connected with the metal shielding ring 2 through interference fit; the outer diameter of the metal shielding ring 2 is larger than the inner diameter of the rubber gasket 3, and the metal shielding ring 2 is connected with the rubber gasket 3 through interference fit. Because the interference fit is adopted for installation and fixation, the rubber gasket 3, the metal shielding ring 2 and the cable are tightly and firmly connected, a stable whole is formed, the structure is more compact, the operation is simple and easy, the possibility of reworking caused by the error of the installation sequence is avoided, and the labor cost is saved.
The rubber gasket 3 is fully contacted with the inner side wall of the cable clamp 4 under the extrusion of the metal shielding ring 2. Through holes for the cables to pass through are correspondingly formed in the cable clamp 4 and the shielding cavity groove 5, and the sizes of the through holes are matched with those of the cables separated from the junction box 1.
In the embodiment shown in fig. 2, the cable wires separated from the junction box 1 are matched with the sizes of the through holes in the cable clamp 4 and the shielding cavity groove 5, and the cable wires sequentially pass through the through holes in the shielding cavity groove 5 and the cable clamp 4; the cable clamp 4 is clamped on the rubber gasket 3 and is connected with an outlet of the junction box 1 through interference fit, the position of a shielding waterproof structure formed by the metal shielding ring 2 and the rubber gasket 3 is fixed, and meanwhile, the shielding cavity groove 5 is completely sealed, so that the shielding and waterproof effects are achieved, the shielding waterproof effect is guaranteed, the structure is simplified, and the cost is saved. In a preferred embodiment, the through holes in the cable clamp 4 and the shielding cavity groove 5 are coaxial with the cable line 1, the metal shielding ring 2 and the rubber gasket 3, so that the shielding structure is more stable, and the shielding effect is better.
The invention is not limited to the specific embodiments described above. The invention extends to any novel one, or any novel combination, of the features disclosed in this specification, as well as to any novel one, or any novel combination, of the steps of the method or process disclosed.
Claims (8)
1. The utility model provides a shielding waterproof construction of high pressure junction box, a serial communication port, including junction box (1), metal shielding ring (2), rubber packing ring (3) and cable clamp (4), be equipped with on the junction box (1) outlet and shield chamber groove (5), metal shielding ring (2) lock tightly on the cable wire that wears out from shielding chamber groove (5), rubber packing ring (3) are equipped with to metal shielding ring (2) outer lane, metal shielding ring (2) and rubber packing ring (3) constitute integrated stable structure in shielding chamber groove (5), cable clamp (4) centre gripping is on rubber packing ring (3) and be connected with junction box (1) outlet, cable clamp (4) and integrated stable structure seal shielding chamber groove (5) jointly; the metal shielding ring (2) is a pipe clamp with a C-shaped cylindrical structure, two arc-shaped sheets (21) are symmetrically arranged at the axial opening end of the metal shielding ring, and at least one buckle (22) is arranged at the left radial end and the right radial end of the metal shielding ring; the rubber gasket (3) and the cable are flexible structures with compression on the outer surfaces.
2. The shielding waterproof structure of the high-voltage junction box according to claim 1, wherein when the metal shielding ring (2) is tightly locked on the cable, the buckle (22) is clamped on the cable for fastening, and the movable ends of the two symmetrically arranged arc-shaped sheets (21) are folded from two sides to the middle and are tightly attached to the outer surface of the C-shaped cylinder for tightly holding.
3. The shielding waterproof structure of the high-voltage junction box according to claim 1, wherein the outer diameter of the cable is larger than the inner diameter of the metal shielding ring (2), and the cable is connected with the metal shielding ring (2) through interference fit; the outer diameter of the metal shielding ring (2) is larger than the inner diameter of the rubber gasket (3), and the metal shielding ring (2) is connected with the rubber gasket (3) through interference fit.
4. A shielding and waterproofing structure of high voltage junction box according to claim 3, characterized in that said rubber gasket (3) is in sufficient contact with the inner side wall of said cable clamp (4) under the extrusion of said metal shielding ring (2).
5. The shielding and waterproof structure of the high-voltage junction box according to claim 4, wherein the cable clamp (4) is matched with the size of the outlet of the junction box (1) and is tightly connected through interference fit.
6. The shielding waterproof structure of the high-voltage junction box according to claim 5, wherein through holes for the cables to pass through are correspondingly formed in the cable clamp (4) and the shielding cavity groove (5), and the size of the through holes is matched with the size of the cables separated from the junction box (1).
7. The shielding waterproof structure of the high-voltage junction box according to claim 6, wherein the cable clamp (4) and the through holes in the shielding cavity groove (5) are coaxial with the cable conductor, the metal shielding ring (2) and the rubber gasket (3).
8. A method for installing and fixing a shielding waterproof structure of a high-voltage junction box, which adopts the shielding waterproof structure of the high-voltage junction box according to any one of claims 1 to 7, comprising:
step 1: a metal shielding ring (2) is arranged on a cable wire at the outlet of the junction box (1) through interference fit;
step 2: a rubber gasket (3) is arranged on the outer ring of the metal shielding ring (2) through interference fit;
step 3: a shielding waterproof structure consisting of a metal shielding ring (2) and a rubber gasket (3) is arranged in a shielding cavity groove (5);
step 4: the cable clamp (4) is clamped on the rubber gasket (3) and is connected with an outlet of the junction box (1) through interference fit, so that the position of the shielding waterproof structure formed by the metal shielding ring (2) and the rubber gasket (3) is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371583.9A CN107947071B (en) | 2017-12-19 | 2017-12-19 | Shielding waterproof structure of high-voltage junction box and mounting and fixing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711371583.9A CN107947071B (en) | 2017-12-19 | 2017-12-19 | Shielding waterproof structure of high-voltage junction box and mounting and fixing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107947071A CN107947071A (en) | 2018-04-20 |
| CN107947071B true CN107947071B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711371583.9A Active CN107947071B (en) | 2017-12-19 | 2017-12-19 | Shielding waterproof structure of high-voltage junction box and mounting and fixing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107947071B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504647A (en) * | 2018-05-18 | 2019-11-26 | 北京铂阳顶荣光伏科技有限公司 | A kind of cable retention clip and cable fixing means |
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| Publication number | Publication date |
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| CN107947071A (en) | 2018-04-20 |
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