CN216489612U - Low-voltage high-power junction box for permanent magnet motor - Google Patents
Low-voltage high-power junction box for permanent magnet motor Download PDFInfo
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- CN216489612U CN216489612U CN202122440335.3U CN202122440335U CN216489612U CN 216489612 U CN216489612 U CN 216489612U CN 202122440335 U CN202122440335 U CN 202122440335U CN 216489612 U CN216489612 U CN 216489612U
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Abstract
The utility model discloses a low-voltage high-power junction box for a permanent magnet motor, wherein connecting terminals are mutually avoided, and adjacent connecting terminals are sequentially distributed in a high-low staggered manner along the arrangement direction of the connecting terminals, so that the spatial distance of the adjacent connecting terminals in the junction box is increased, and the spatial distance between the adjacent connecting terminals is larger than the minimum electrical gap; the utility model can ensure that the phenomenon that the surface insulator of the terminal is broken down by voltage does not occur between adjacent terminals, prolong the service life of the insulator and avoid the occurrence of dangerous conditions such as fire and the like.
Description
Technical Field
The utility model relates to a junction box for motor wiring, in particular to a low-voltage high-power junction box for a permanent magnet motor.
Background
The three-phase permanent magnet synchronous motor has been widely accepted by various industries in the present society due to a series of advantages of small volume, light weight, high efficiency, energy conservation and the like.
The three-phase permanent magnet synchronous motor needs to be connected with an external power supply through a junction box, the existing star-shaped connection junction box under the standard mostly adopts double-wiring bolts or copper bar direct connection, and wiring ports are closely arranged, so that an electric gap between the wiring ports is small. Such wiring mode can only allow slightly transshipping, and under the heavy current condition, wiring bolt or copper bar and cable all can seriously generate heat, and wiring bolt or copper bar can the surface damage serious. Because the electric clearance is less, can lead to the voltage between the adjacent wiring port to be higher than insulating material's breakdown voltage to take place to puncture insulating material's phenomenon, and then cause the conflagration or make the terminal box electrified, cause the incident, consequently need to solve urgently.
Disclosure of Invention
In order to avoid and overcome the technical problems in the prior art, the utility model provides the low-voltage high-power junction box for the permanent magnet motor, so that the distance between adjacent wiring ports is larger than the minimum electric gap, and the phenomenon that the voltage breaks through an insulator is avoided.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a high-power terminal box of low pressure for permanent-magnet machine, includes the support, be connected with binding post on the support, adjacent binding post dodges each other and the distance between this adjacent binding post is greater than minimum electric clearance.
As a further scheme of the utility model: adjacent binding post along binding post direction of arranging crisscross distribution of height in proper order to increase the spatial distance of adjacent binding post in the terminal box.
As a still further scheme of the utility model: the wiring terminal comprises an access port, an input port and a neutral port, the support is connected with an L-shaped sheet through an insulator, and two ends of the L-shaped sheet are connected with the access port and the input port respectively.
As a still further scheme of the utility model: the neutral ports are connected with the support through insulators, and each neutral port is connected with the same metal sheet to form a neutral point in a star-shaped wiring method.
As a still further scheme of the utility model: the insulator is made of resin or rubber.
Compared with the prior art, the utility model has the beneficial effects that:
1. the adjacent wiring terminals in the junction box are not interfered with each other, the distance between the adjacent wiring terminals is kept to be larger than the minimum electric gap, the phenomenon that the surface insulator of the wiring terminal is broken down by voltage can be avoided between the adjacent wiring terminals, the service life of the insulator is prolonged, and dangerous conditions such as fire disasters are avoided.
2. Adjacent binding post along the crisscross distribution of the direction that binding post arranged height in proper order, can increase the spatial distance of adjacent binding post in the terminal box, can be in the limited space of terminal box as much as installation binding post, improve the space utilization in the terminal box.
3. Adopt L type piece to link together access port and input port, when guaranteeing that the distance between the adjacent port is greater than minimum electric clearance, can install the circuit fast conveniently in the narrow and small space of terminal box to improve work efficiency.
Drawings
Fig. 1 is a front view of the internal construction of the present invention.
FIG. 2 is a top view of the internal structure of the present invention.
10-support 21-access port 22-input port 23-neutral port
30-L-shaped sheet 40-insulator
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.
Referring to fig. 1-2, in an embodiment of the utility model, a low-voltage high-power junction box for a permanent magnet motor is formed by first fixedly mounting a base on a housing of the permanent magnet motor, and then fixedly mounting a bracket 10 on the base.
The permanent magnet motor uses three-phase alternating current, three-phase current wiring terminals are arranged in the junction box, the wiring terminals are sequentially arranged along the length direction of the support 10, and adjacent wiring terminals are not interfered with each other and are avoided from each other. In order to increase the distance between the wiring terminals in the limited space of the wiring terminal box, the adjacent wiring terminals are distributed in a staggered mode along the length direction of the wiring terminal box.
Mounting holes with different heights are formed in the length direction of the support 10, and the wiring terminals are connected with the mounting holes in a one-to-one correspondence mode through the insulators 40, so that the arrangement mode with staggered heights can be achieved.
The space distance between the adjacent wiring terminals can be increased by the arrangement mode of the adjacent wiring terminals, so that the space distance is larger than the minimum electric gap between the adjacent terminals, and the phenomenon that the insulators are broken down by voltage between the adjacent wiring terminals is avoided.
Each phase connection terminal includes an access port 21, an input port 22, and a neutral port 23, and the three ports are arranged along the width direction of the bracket 10. The ports are not interfered with each other, and are distributed along the width direction of the bracket 10 in a staggered manner in sequence, and the distribution rule of the ports is the same as that of the wiring terminals. The arrangement mode can also increase the space distance between the adjacent ports, so that the space distance is larger than the minimum electric gap between the adjacent ports, and the phenomenon that the insulators are broken down by voltage between the adjacent ports is avoided.
The access port 21 and the input port 22 are communicated through the L-shaped sheet 30, and the access port 21 and the input port 22 are respectively connected to two ends of the L-shaped sheet 30, so that a high-low staggered arrangement mode is formed. Firstly, the access port 21 and the input port 22 are connected to the L-shaped sheet 30, and then the L-shaped sheet 30 is connected to the bracket 10 through the insulator 40, so that the wiring work can be completed quickly and conveniently, and the wiring efficiency is improved.
The neutral ports 23 are connected to the bracket 10 through the insulator 40, and each neutral port 23 is connected to the same metal plate to form a neutral point in the star connection method.
The insulator 40 is made of an insulating material such as resin or rubber.
The working principle of the utility model is as follows: when the utility model is used, firstly, a power supply cable and an internal cable of the motor are respectively pressed on two ends of the L-shaped sheet 30, then the L-shaped sheet 30 is connected on the bracket 10 through the insulator 40, then the neutral cable is connected with the neutral port 23 and is fixed on the bracket 10 through the insulator 40, and finally, the wiring can be finished on the shell cover of the junction box, and the electrified motor can run.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.
Claims (4)
1. The utility model provides a high-power terminal box of low pressure for permanent-magnet machine, its characterized in that includes support (10), be connected with binding post on support (10), binding post includes access port (21), input port (22) and neutral port (23), and the support is connected with L type piece (30) through insulator (40), and the both ends of L type piece (30) link to each other with access port (21) and input port (22) respectively, and adjacent binding post dodges each other and the distance between this adjacent binding post is greater than minimum electric clearance.
2. The low-voltage high-power junction box for the permanent magnet motor as claimed in claim 1, wherein adjacent terminals are distributed in a staggered manner in the direction of arrangement of the terminals, so that the spatial distance between the adjacent terminals in the junction box is increased.
3. The low-voltage high-power junction box for permanent magnet motor according to claim 2, wherein the neutral ports (23) are connected to the bracket (10) through insulators (40), and each neutral port (23) is connected to the same metal sheet to form a neutral point in a star connection method.
4. The low-voltage high-power junction box for permanent magnet motor according to claim 3, wherein said insulator (40) is made of resin or rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122440335.3U CN216489612U (en) | 2021-10-11 | 2021-10-11 | Low-voltage high-power junction box for permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122440335.3U CN216489612U (en) | 2021-10-11 | 2021-10-11 | Low-voltage high-power junction box for permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216489612U true CN216489612U (en) | 2022-05-10 |
Family
ID=81439437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122440335.3U Active CN216489612U (en) | 2021-10-11 | 2021-10-11 | Low-voltage high-power junction box for permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216489612U (en) |
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2021
- 2021-10-11 CN CN202122440335.3U patent/CN216489612U/en active Active
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