CN210610202U

CN210610202U - Shielding device and motor controller

Info

Publication number: CN210610202U
Application number: CN201920561971.1U
Authority: CN
Inventors: 苏金国; 时晓蕾; 陶高周
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Hefei Yangguang Electric Power Technology Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-05-22
Anticipated expiration: 2029-04-23

Abstract

The utility model discloses a shield assembly and machine controller, wherein, shield assembly includes shielding shell, communication terminal, shield plate and connects the shield door of shield plate, and shield plate and shield door are all installed in shielding shell, and shield plate, shield door and shielding shell enclose to close and form communication terminal shielding space, and communication terminal installs in communication terminal shielding space. Through set up shield plate and shield door in shield shell, and then form communication terminal shielding space with shield shell for other structures in communication terminal and the shield shell are kept apart, reduce interference signal to communication terminal's influence, and then have improved machine controller's safety in utilization.

Description

Shielding device and motor controller

Technical Field

The utility model relates to an electromagnetic shield technical field, in particular to shielding device. The utility model discloses still relate to a machine controller including above-mentioned shield assembly.

Background

The motor controller is generally optimized and composed of a high-power intelligent module, a cooling and radiating system, a power supply control system and a closed-loop sampling feedback control system, the traditional motor controller comprises a shielding shell, an inversion module, a driving plate and a communication terminal for external communication, and the inversion module, the driving plate, the communication terminal and other structures are generally arranged in an open space inside the shielding shell.

However, the electromagnetic environment inside the shielding shell is complex, the interference to the signal of the communication terminal is large, the control failure is often caused by the electromagnetic interference, and an accident can occur in the serious case, so that the use safety of the motor controller is low.

Therefore, how to improve the use safety of the motor controller is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a shield assembly to improve machine controller's safety in utilization. Another object of the present invention is to provide a motor controller including the above shielding device.

In order to achieve the above object, the utility model provides a shielding device, including shielding shell and communication terminal, still include the shield plate and connect the shield door of shield plate, the shield plate with the shield door is all installed in the shielding shell, and the shield plate the shield door with the shielding shell encloses to close and forms communication terminal shielding space, communication terminal installs in the communication terminal shielding space.

Preferably, shield shell includes that shielding case and lock are in the upper cover of the top end opening position of shielding case, the shield plate with the shield door is all installed in the shielding case, just the shield plate with shielding incasement wall fixed connection.

Preferably, the shielding plate comprises a first shielding vertical plate and a second shielding vertical plate, the first shielding vertical plate and the second shielding vertical plate are respectively and fixedly connected with two adjacent side walls of the shielding door, and the left end and the right end of the shielding door are respectively spliced with the first shielding vertical plate and the second shielding vertical plate.

Preferably, the shielding door includes a door body and sets up first joint board and second joint board at both ends about the door body, first joint board is equipped with the joint the first draw-in groove at first shielding riser edge, the second joint board is equipped with the joint the second draw-in groove at second shielding riser edge, first draw-in groove height the second draw-in groove height first shielding riser height with second shielding riser height equals.

Preferably, the shielding door is of a flexible sheet metal structure.

Preferably, the shield door further comprises an elastic limiting piece, the surface of the elastic limiting piece can be tightly pressed against the inner wall of the upper cover, one end of the elastic limiting piece is connected with the door body, and the included angle formed by the elastic limiting piece and the door body is larger than 90 degrees and smaller than 180 degrees.

Preferably, the door body is provided with a wire passing hole.

Preferably, the shield door, the shield case, and the shield plate are of a metal structure or a metal-resin composite structure.

A motor controller comprising a shielding arrangement, the shielding arrangement being any one of the shielding arrangements described above.

Preferably, still include the circuit board, the circuit board with communication terminal electricity is connected, just the circuit board is located in communication terminal shielding space, be equipped with binding post on the circuit board, be equipped with on the circuit board and dodge the breach.

In the technical solution, the utility model provides a shielding device includes shielding shell, communication terminal, shield plate and connects the shield door of shield plate, and shield plate and shield door are all installed in shielding shell, and shield plate, shield door and shielding shell enclose to close and form communication terminal shielding space, and communication terminal installs in communication terminal shielding space.

It can be known from the above description that in the shield assembly that this application provided, through set up shield plate and shield door in shield shell, and then form communication terminal shielding space with shield shell for communication terminal keeps apart with other structures in the shield shell, reduces interference signal to communication terminal's influence, and then has improved machine controller's safety in utilization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 shielding apparatus according to an embodiment of the present invention;

FIG. 2 is an exploded view of the shielding assembly of FIG. 1;

fig. 3 is a top view of a shielding device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a shield door according to an embodiment of the present invention.

Wherein in FIGS. 1-4: 1-shielding box, 2-upper cover, 3-communication terminal;

4-shielding door, 41-first clamping plate, 42-first clamping groove, 43-wire passing hole, 44-second clamping groove, 45-second clamping plate, 46-door body and 47-elastic limiting sheet;

5-a circuit board, 51-an avoidance notch and 52-a wiring terminal;

6-first shielding vertical plate and 7-second shielding vertical plate.

Detailed Description

The core of the utility model is to provide a shielding device to improve machine controller's safety in utilization. Another core of the present invention is to provide a motor controller including the above shielding device.

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1 to 4, in an embodiment, a shielding apparatus provided by an embodiment of the present invention includes a shielding housing, a communication terminal 3, a shielding plate, and a shielding door 4 connected to the shielding plate. Specifically, the shield door 4, the shield case and the shield plate are all of metal structures, specifically, can be of iron and copper structures, and can also be of electromagnetic shielding materials such as metal-resin composite structures. Of course, the shielding door 4, the shielding shell and the shielding plate can be made of shielding materials of different materials in the specific manufacturing process.

Shield plate and shield door 4 are all installed in the shield shell, and shield plate, shield door 4 and shield shell enclose to close and form communication terminal shielding space, and wherein, shield door 4 can one end be connected with the shield plate, and the other end is connected with shield shell. The shielding plate may be mounted on the shielding shell by bonding, welding, or the like.

The communication terminal 3 is mounted in the communication terminal shielding space. Specifically, in order to facilitate the attachment and detachment of the communication terminal 3, the communication terminal 3 is fastened to the shield case by a screw.

As can be seen from the above description, in the shielding device provided in the embodiment of the present application, the shielding plate and the shielding door 4 are disposed in the shielding shell, and then the shielding space of the communication terminal is formed with the shielding shell, so that the communication terminal 3 is isolated from other structures in the shielding shell where signal infection exists, the influence of the interference signal on the communication terminal 3 is reduced, and the use safety of the motor controller is further improved.

In a specific embodiment, the shielding shell comprises a shielding box 1 and an upper cover 2 buckled at the top end opening position of the shielding box 1, the shielding plate and the shielding door 4 are both installed in the shielding box 1, and the shielding plate is fixedly connected with the inner wall of the shielding box 1. Specifically, the upper cover 2 and the shield case 1 are preferably connected by a threaded fastener. The shape of the shielding box 1 is determined according to actual needs, and preferably, the upper cover 2 seals the top end opening position of the shielding box 1. In order to facilitate the processing of the shielding shell, it is preferable that the shielding box 1 and the upper cover 2 are formed integrally.

In a specific embodiment, the shielding plate includes a first shielding vertical plate 6 and a second shielding vertical plate 7, the first shielding vertical plate 6 and the second shielding vertical plate 7 are respectively and fixedly connected with two adjacent side walls of the shielding door 4, and the left end and the right end of the shielding door 4 are respectively plugged with the first shielding vertical plate 6 and the second shielding vertical plate 7. As shown in fig. 2 and 3, in order to save space and process the shielding plate, the first shielding vertical plate 6 and the second shielding vertical plate 7 are preferably flat plate structures.

Specifically, the shield door 4 includes a door body 46 and a first clamping plate 41 and a second clamping plate 45 that are disposed at the left and right ends of the door body 46, and specifically, the first clamping plate 41 and the second clamping plate 45 are respectively located at the left and right sides of the door body 46. First joint board 41 is equipped with the first draw-in groove 42 at the first shielding riser 6 edge of joint, second joint board 45 is equipped with the second draw-in groove 44 at the second shielding riser 7 edge of joint, first draw-in groove 42 height, second draw-in groove 44 height, first shielding riser 6 height and second shielding riser 7 height equal, first shielding riser 6 height and second shielding riser 7 all with the lateral wall and the diapire sealing connection of shielded box, the shield door inserts the back, shield door bottom and the laminating of shielded box bottom wall. Specifically, the first engaging plate 41 and the second engaging plate 45 may be an S-shaped plate or a U-shaped plate. As shown in fig. 4, the first engaging plate 41 and the second engaging plate 45 are preferably isolated from the door body 46, and the first engaging groove 42 and the second engaging groove 44 are formed at the bent positions of the first engaging plate 41 and the second engaging plate 45, respectively.

Specifically, as shown in fig. 3, the first shielding vertical plate 6 and the second shielding vertical plate 7 are vertically disposed, the first shielding vertical plate 6 is clamped in the first clamping groove 42, and the second shielding vertical plate 7 is clamped in the second clamping groove 44. The first clamping plate 41 and the second clamping member in two different directions are matched with the shielding plate to completely restrict the shielding door 4 in the horizontal direction. The structure of the shield door 4 does not need to be fastened by screws and is fixed by clamping, and the first clamping plate 41 and the second clamping plate 45 can fix the shield door 4 well and can greatly attenuate electromagnetic interference signals entering the communication terminal 3 from the inside.

In order to facilitate the processing of the shielding door 4, preferably, the shielding door 4 is of a flexible sheet metal structure.

In a specific embodiment, the shield door 4 further includes an elastic limiting piece 47 whose surface can be pressed against the inner wall of the upper cover 2, one end of the elastic limiting piece 47 is connected with the door 46, and specifically, the elastic limiting piece 47 is connected with the top end of the door 46. The included angle formed by the elastic limiting piece 47 and the door body 46 is larger than 90 degrees and smaller than 180 degrees, namely, the outer edge of the elastic limiting piece 47 is tilted upwards. Through set up above-mentioned spacing piece of elasticity 47 on shield door 4, when upper cover 2 was fixed on shielded cell 1, spacing piece of elasticity 47 received the extrusion of upper cover 2, the crimping of the elasticity contact piece through the top promptly and upper cover 2 to retrain the displacement of the spacing piece of elasticity 47 vertical direction, with shield door 4 vertical direction restraint. Through spacing piece 47 of elasticity, first joint board 41 and second joint board 45 combined action with shield door 4 firm fix inside the shield shell, improved shield door 4's installation stability effectively.

For the convenience of wiring, the door 46 is preferably provided with a wire passing hole 43.

The motor controller provided by the application comprises the shielding device, wherein the shielding device is any one of the shielding devices, and the specific structure of the shielding device is described above, so that the technical effects are also achieved.

In a specific embodiment, the motor controller further comprises a circuit board 5, the circuit board 5 is electrically connected with the communication terminal 3, the circuit board 5 is located in the communication terminal shielding space, and the circuit board 5 is provided with a wiring terminal 52. Specifically, the wiring board 5 is fixed to the communication terminal 3, and the wire of the connection terminal 52 is led out through the wire passing hole 43.

The circuit board 5 is provided with an avoiding gap 51 for avoiding the grounding stud in the shielding shell. Specifically, in order to avoid line interference, the avoidance notch 51 is preferably provided at a corner position on the circuit board 5. The avoidance notch 51 is arranged on the circuit board 5, so that the installation space can be saved, the size of the case is reduced, and the grounding is convenient.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a shielding device, includes shielding shell and communication terminal (3), its characterized in that still includes the shield plate and connects shield door (4) of shield plate, the shield plate with shield door (4) are all installed in the shielding shell, just the shield plate shield door (4) with the shielding shell encloses and closes and form communication terminal shielding space, install communication terminal (3) in the communication terminal shielding space.

2. The shielding device according to claim 1, wherein the shielding shell comprises a shielding box (1) and an upper cover (2) fastened at the top end opening position of the shielding box (1), the shielding plate and the shielding door (4) are both installed in the shielding box (1), and the shielding plate is fixedly connected with the inner wall of the shielding box (1).

3. The shielding device according to claim 2, wherein the shielding plate comprises a first shielding vertical plate (6) and a second shielding vertical plate (7), the first shielding vertical plate (6) and the second shielding vertical plate (7) are respectively and fixedly connected with two adjacent side walls of the shielding door (4), and the left end and the right end of the shielding door (4) are respectively plugged with the first shielding vertical plate (6) and the second shielding vertical plate (7).

4. The shielding device according to claim 3, wherein the shielding door (4) comprises a door body (46), and a first clamping plate (41) and a second clamping plate (45) which are arranged at the left end and the right end of the door body (46), the first clamping plate (41) is provided with a first clamping groove (42) for clamping the edge of the first shielding vertical plate (6), the second clamping plate (45) is provided with a second clamping groove (44) for clamping the edge of the second shielding vertical plate (7), and the height of the first clamping groove (42), the height of the second clamping groove (44), the height of the first shielding vertical plate (6) and the height of the second shielding vertical plate (7) are equal.

5. The shielding device according to claim 4, characterized in that the shielding door (4) is of a flexible sheet metal construction.

6. The shielding device according to claim 5, wherein the shielding door (4) further comprises an elastic limiting sheet (47) the surface of which can be pressed against the inner wall of the upper cover (2), one end of the elastic limiting sheet (47) is connected with the door body (46), and an included angle formed by the elastic limiting sheet (47) and the door body (46) is greater than 90 degrees and less than 180 degrees.

7. The shielding device according to claim 4, wherein the door body (46) is provided with a wire passing hole (43).

8. The shielding device according to claim 1, characterized in that the shielding door (4), the shielding shell and the shielding plate are of a metal structure or a metal-resin composite structure.

9. A motor controller comprising a screening arrangement, characterized in that the screening arrangement is as claimed in any one of claims 1-8.

10. The motor controller according to claim 9, further comprising a circuit board (5), wherein the circuit board (5) is electrically connected to the communication terminal (3), the circuit board (5) is located in the communication terminal shielding space, the circuit board (5) is provided with a wiring terminal 52, and the circuit board (5) is provided with an avoiding notch (51).