CN113572103B - Terminal box - Google Patents
Terminal box Download PDFInfo
- Publication number
- CN113572103B CN113572103B CN202110760578.7A CN202110760578A CN113572103B CN 113572103 B CN113572103 B CN 113572103B CN 202110760578 A CN202110760578 A CN 202110760578A CN 113572103 B CN113572103 B CN 113572103B
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- CN
- China
- Prior art keywords
- box body
- hole
- upper cover
- junction box
- mounting groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/0207—Wire harnesses
- B60R16/0215—Protecting, fastening and routing means therefor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/22—Bases, e.g. strip, block, panel
- H01R9/24—Terminal blocks
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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
- H02G3/081—Bases, casings or covers
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Connection Or Junction Boxes (AREA)
Abstract
The invention aims to provide a safe and reliable junction box suitable for a strong voltage sheet wiring mode, which comprises a box body and an upper cover, wherein a through hole for a cable to enter is formed in the box body, a plurality of wiring terminals are arranged in the box body and connected with a pressing sheet terminal at the end part of the cable, and an insulating partition plate is arranged in an inner cavity of the box body between adjacent wiring terminals. In the scheme, the adjacent wiring terminals are separated by the insulating partition plate, so that the effect of isolating the adjacent cables is achieved, the resistivity between the adjacent cables can be increased, the high-voltage breakdown risk is reduced, and the requirement of strong current input of the hub motor driving system is met.
Description
Technical Field
The invention relates to the technical field of junction boxes, in particular to a junction box suitable for a wafer wiring mode.
Background
The hub motor is one of the hot spots of research in the field of new energy automobiles in recent years, and for a distributed drive automobile, each hub motor is independently installed in each hub, so that the function of respectively controlling four wheels can be realized. The control signal of the hub motor comes from a running computer, namely an electronic control unit ECU, and the motor outgoing line needs to be connected with the ECU outgoing line. The general working voltage of the hub motor is about 350-400V, the hub motor is very close to the ground due to being installed in a hub, accumulated water environment is inevitably faced, the hub motor driven new energy automobile is industrialized in the future, the safety of the whole automobile is inevitably required to be comprehensively considered, and reliable insulation and sealing requirements can be met.
At present, the inlet and outlet cables of a junction box commonly used in an electrical system are connected with a Glan head, so that a good waterproof function can be realized, however, the junction box structure is commonly used for low-voltage cable connection, and the electromagnetic interference between the cables can be ignored or has no strict requirement, so that the cables are fixed in the junction box by adopting a screw line pressing mode, the space between the cables can be saved, and the volume of the junction box is further reduced; and since such a junction box structure is often used for weak current, it is not sufficiently considered in view of safety. However, the hub motor driving system adopts strong current input, needs to be fully considered in terms of safety, is not suitable for a strong current circuit in a wiring mode of pressing a wire through a screw, replaces a pressing sheet terminal, is made of copper materials, has better conductivity, and needs to meet certain pressing force during wiring so as to ensure that a sufficient contact area between the two pressing sheet terminals meets the requirement of the conductivity. Therefore, the junction box in the prior art cannot be used in the wiring of the in-wheel motor.
Disclosure of Invention
The invention aims to provide a safe and reliable junction box suitable for a strong voltage sheet wiring mode.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a junction box, includes box body and upper cover, sets up the via hole that supplies the cable to enter on the box body, is provided with a plurality of binding post in the box body, and binding post is connected with the preforming terminal of cable tip, is provided with insulating barrier in the box body inner chamber between the binding post that faces mutually.
In the above scheme, adjacent wiring terminals are separated by the insulating partition plate, so that the effect of isolating adjacent cables is achieved, the resistivity between adjacent cables can be increased, the high-voltage breakdown risk is reduced, and the requirement of strong current input of the hub motor driving system is met.
Drawings
FIG. 1 is an external view of a junction box;
FIG. 2 is a cross-sectional view of the junction box;
fig. 3 is a perspective view of the cartridge body.
Detailed Description
As shown in fig. 1 to 3, a junction box includes a box body 10 and an upper cover 20, a via hole 11 for a cable 30 to enter is opened on the box body 10, a plurality of connection terminals 40 are provided in the box body 10, the connection terminals 40 are connected with a wafer terminal 31 at the end of the cable 30, and an insulating partition 50 is provided in an inner cavity of the box body 10 between adjacent connection terminals 40. The adjacent wiring terminals 40 are separated by the insulating partition plate 50, so that the function of separating adjacent cables is achieved, the resistivity between the adjacent cables 30 can be increased, the high-voltage breakdown risk is reduced, and the requirement of strong current input of the hub motor driving system is met.
When the upper cover 20 is moved away, the proximity switch 60 feeds back a signal, and the strong current is cut off, but the main circuit has electrical components such as inductance and capacitance, and the cable voltage will fade, the four corners of the box body 10 are provided with the upright posts 12, the height of the upright posts 12 is the same as that of the insulating partition plate 50 and is higher than the upper hole edge of the through holes 11, the upper end face of the upright posts 12 is provided with threaded holes 121, the cover plate 13 is arranged on the upper end face of the upright posts 12 and is fixedly connected with the upright posts 12 through bolts, and the cover plate 13 and the upper cover 20 are arranged at intervals. In order to avoid the operator to touch the pressing sheet terminal 31 at the moment, the structure of the cover plate 13 is added, so that the operator can be prevented from touching the pressing sheet terminal 31, the cable voltage can be completely removed in the process of detaching the cover plate 13, and one more barrier for protecting the operator is provided.
In order to fix the tablet terminals 31, a boss 41 is arranged in the box body 10, a plurality of mounting holes 411 are arranged on the boss 41 at intervals along the length direction of the boss, nuts 42 are arranged in the mounting holes 411, and the tablet terminals 31 are stacked on the nuts 42 and pressed on the nuts 42 through threaded fasteners 43, so that sufficient contact area among the tablet terminals 31 is ensured, and good conductivity is realized.
The tablet terminal 31 needs to satisfy a certain tightening torque when connected through the threaded fastener 43, in order to avoid the damage of the tightening torque to the box body 10, the nut 42 is welded on the lower plate surface of the connecting flange 44, the outer contour of the connecting flange 44 is larger than the aperture of the mounting hole 411, the boss 41 on the periphery of the mounting hole 411 is provided with a connecting hole 412, the connecting flange 44 and the boss 41 are fixedly connected through a bolt, and the tablet terminal 31 is pressed tightly on the connecting flange 44 through the threaded fastener 43. The wafer terminal 31 is mounted on the connecting flange 44 according to a predetermined tightening torque, and the connecting flange 44 is fixed on the case body 10 (the boss 41 is a part of the case body 10) in a normal connection manner, so that the case body 10 is mechanically protected, and when the connecting flange 44 is worn, only the connecting flange 44 needs to be replaced.
One side of box body 10 is provided with mounting groove 14 to the protruding stretching of outside, and mounting groove 14's notch just along the parallel and level with the box body 10 suitable for reading up, and through-hole 141 has been seted up to mounting groove 14's tank bottom, and proximity switch 60 passes through-hole 141 from the outside and gets into in mounting groove 14 and with mounting groove 14 fixed connection, and proximity switch 60's inductive head and upper cover 20 interval formula are arranged. The proximity switch 60 is fixedly connected with the box body 10, when the upper cover 20 is removed, the proximity switch 60 can give a feedback signal, the strong current is cut off, and the safety of an operator is ensured. The proximity switch 60 can be a mature product, and a capacitance type proximity switch is selected, so that the distance from a proximity switch probe to the upper cover 20 is required to be within the detection effective travel range of the proximity switch 60 during installation.
The tank bottom of mounting groove 14 and apron 13 parallel and level are arranged, therefore set up corresponding structure on the upper cover 20, cover mounting groove 14 upper shed in the lump, and proximity switch 60 and through-hole 141 are sealed to be cooperated, prevent into water, produce the potential safety hazard.
The upper opening edge of the box body 10 is provided with a connecting lug a, the outer edge of the upper cover 20 is also provided with a connecting lug a, and a bolt penetrates through the connecting lugs a on the box body 10 and the upper cover 20 to fixedly connect the box body 10 and the upper cover 20, so that the installation and the disassembly are convenient; the lower plate surface of the upper cover 20 is provided with a convex ring 21 which protrudes downwards, the convex ring 21 abuts against the inner wall of the box body 10 to form a spigot fit, and a sealing ring 70 is further arranged between the upper cover 20 and the upper end surface of the box body 10 to play a sealing role.
The periphery cover of cable 30 is equipped with glan head 32, and glan head 32 is fixed on box body 10 and sealing connection between glan head 32 and the via hole 11, and glan head 32 installs on box body 10, and cable 30 passes glan head 32 and can screw up glan head nut and realize sealed function.
The box body 10 is made of insulating materials or metal materials with no surface sprayed with insulating coatings, the upper cover 20 is made of metal materials, and the cover plate 13, the gland head 32 and the connecting flange 44 are made of light insulating materials.
The invention is suitable for the high-voltage cable pressing sheet wiring mode with the voltage below 400V; the terminal connecting flange 44 can ensure the tightening torque of the threaded fastener 43 between the wafer terminals 31; the proximity switch 60 can ensure that an operator feeds back a signal when the junction box is disassembled, so that strong current is cut off, and personal safety is ensured; the cover plate 13 forms secondary insulation, so that the damage to a human body caused by voltage delay fading is avoided; the gland head 32 and the sealing ring 70 ensure the sealing of the junction box. The invention fully considers the use safety of the junction box, has simple structure, is easy to process and produce and is convenient to popularize and use.
Claims (8)
1. The utility model provides a junction box, includes box body (10) and upper cover (20), offers via hole (11) that supply cable (30) to get into on box body (10), is provided with a plurality of binding post (40) in box body (10), and binding post (40) are connected its characterized in that with preforming terminal (31) of cable (30) tip: an insulating partition plate (50) is arranged in the inner cavity of the box body (10) between the adjacent wiring terminals (40); four corner positions of the box body (10) are provided with upright columns (12), the height of each upright column (12) is consistent with the height of the insulating partition plate (50) and is higher than the upper hole edge of each through hole (11), the upper end faces of the upright columns (12) are provided with threaded holes (121), a cover plate (13) is arranged on the upper end faces of the upright columns (12) and is fixedly connected with the upright columns (12) through bolts, and the cover plate (13) and the upper cover (20) are arranged at intervals.
2. The junction box of claim 1, wherein: a boss (41) is arranged in the box body (10), a plurality of mounting holes (411) are formed in the boss (41) at intervals along the length direction of the boss, nuts (42) are arranged in the mounting holes (411), and the pressing sheet terminals (31) are stacked on the nuts (42) and are pressed on the nuts (42) through threaded fasteners (43).
3. The junction box of claim 2, wherein: the nut (42) is welded on the lower plate surface of the connecting flange (44), the outer contour of the connecting flange (44) is larger than the aperture of the mounting hole (411), the boss (41) on the periphery of the mounting hole (411) is provided with a connecting hole (412), the connecting flange (44) is fixedly connected with the boss (41) through the bolt, and the pressing sheet terminal (31) is pressed on the connecting flange (44) through the threaded fastener (43).
4. The junction box of claim 2, wherein: one side of box body (10) is protruding to stretch to the outside and is provided with mounting groove (14), the notch of mounting groove (14) up and with box body (10) suitable for reading along the parallel and level, through-hole (141) have been seted up to the tank bottom of mounting groove (14), proximity switch (60) pass through-hole (141) from the outside and get into in mounting groove (14) and with mounting groove (14) fixed connection, proximity switch (60) the inductive head and upper cover (20) interval formula are arranged.
5. The junction box of claim 4, wherein: the bottom of the mounting groove (14) is flush with the cover plate (13), and the proximity switch (60) is in sealing fit with the through hole (141).
6. The junction box of claim 4, wherein: the upper opening edge of the box body (10) is provided with a connecting lug (a), the outer edge of the upper cover (20) is also provided with the connecting lug (a), a bolt penetrates through the box body (10) and the connecting lug (a) on the upper cover (20) to fixedly connect the box body and the upper cover, a convex ring (21) is arranged on the lower plate surface of the upper cover (20) in a downward protruding mode, the convex ring (21) abuts against the inner wall of the box body (10) to form a spigot fit, and a sealing ring (70) is further arranged between the upper end surface of the upper cover (20) and the upper end surface of the box body (10).
7. The junction box of claim 4, wherein: the periphery of the cable (30) is sleeved with a gland head (32), the gland head (32) is fixed on the box body (10) and the gland head (32) is connected with the through hole (11) in a sealing mode.
8. The terminal block of claim 7, wherein: the box body (10) is made of insulating materials or metal materials with no surface sprayed with insulating coatings, the upper cover (20) is made of metal materials, and the cover plate (13), the gland head (32) and the connecting flange (44) are all made of light insulating materials.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110760578.7A CN113572103B (en) | 2021-07-06 | 2021-07-06 | Terminal box |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202110760578.7A CN113572103B (en) | 2021-07-06 | 2021-07-06 | Terminal box |
Publications (2)
Publication Number | Publication Date |
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CN113572103A CN113572103A (en) | 2021-10-29 |
CN113572103B true CN113572103B (en) | 2022-12-06 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN202110760578.7A Active CN113572103B (en) | 2021-07-06 | 2021-07-06 | Terminal box |
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CN (1) | CN113572103B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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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 |
CN117220070B (en) * | 2023-11-07 | 2024-04-09 | 国网山东省电力公司青州市供电公司 | Conductive connecting assembly |
Citations (2)
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CN105161879A (en) * | 2015-09-24 | 2015-12-16 | 上海埃而生电气有限公司 | Multilayer PCB (Printed Circuit Board) central distribution box |
CN110061167A (en) * | 2019-04-25 | 2019-07-26 | 江西中汽瑞华新能源科技有限公司 | A kind of mounting structure and its application method for electric car internal cell |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6186716B2 (en) * | 2012-01-16 | 2017-08-30 | 株式会社Gsユアサ | Power supply |
CN203445256U (en) * | 2013-08-01 | 2014-02-19 | 深圳市核达中远通电源技术有限公司 | Wiring terminal capable of bearing large locking moment |
CN207573155U (en) * | 2017-11-10 | 2018-07-03 | 江苏月亮电机有限公司 | A kind of high dustproof and waterproof terminal box of efficient explosionproof motor |
CN208128049U (en) * | 2018-03-22 | 2018-11-20 | 苏州朗高电机有限公司 | A kind of safe and reliable three-phase motor junction box structure |
CN209046192U (en) * | 2018-09-29 | 2019-06-28 | 深圳市品川能源电气有限公司 | A kind of front and back dress waterproof shield terminal box |
CN211348362U (en) * | 2019-12-17 | 2020-08-25 | 常州市远屏电子有限公司 | Interface device for anechoic chamber |
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2021
- 2021-07-06 CN CN202110760578.7A patent/CN113572103B/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105161879A (en) * | 2015-09-24 | 2015-12-16 | 上海埃而生电气有限公司 | Multilayer PCB (Printed Circuit Board) central distribution box |
CN110061167A (en) * | 2019-04-25 | 2019-07-26 | 江西中汽瑞华新能源科技有限公司 | A kind of mounting structure and its application method for electric car internal cell |
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CN113572103A (en) | 2021-10-29 |
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