Impedance device convenient to open and overhaul

Abstract

The utility model belongs to the technical field of impedance networks, and particularly discloses an impedance device convenient to open for maintenance, which comprises an outer shell, an upper turnover cover and an impedance circuit assembly, the outer shell is hollow and is open at the upper part and the front side, the upper turnover cover is L-shaped, two sides of the rear end of the upper turnover cover are connected with rotating shafts, and the rotating shafts are connected with the impedance circuit assembly. Shaft holes rotationally connected with the rotating shaft are formed in the left side and the right side of the rear side of the upper opening of the outer shell, and the lower side of the front portion of the upper overturning cover is connected with the lower side of the front opening of the outer shell through screws. According to the scheme, the upper overturning cover and the outer shell can rotate relatively, when the upper overturning cover is overturned upwards, the impedance circuit assembly in the outer shell can be exposed, and therefore the impedance circuit assembly can be taken out or installed conveniently. When the impedance circuit assembly is installed, the impedance circuit assembly is supported on the supporting strip, and after the upper overturning cover covers the impedance circuit assembly, the pressing column is pressed on the impedance circuit assembly, so that the impedance circuit assembly is installed stably.

Description

TECHNICAL FIELD

[0001] The utility model relates to impedance network technical field, concretely is a kind of impedance device that facilitates opening overhauling. BACKGROUND

[0002] LISN impedance device (impedance network) is line impedance stabilizing network.LISN is an important auxiliary equipment in electromagnetic compatibility test in power system.It can isolate radio wave interference, provide stable test impedance, and play the role of filtering.

[0003] When using, due to internal circuit damage or cleaning and other reasons, the shell of impedance device needs to be opened for maintenance frequently, and the circuit of the impedance device is usually embedded in the shell and connected by screws, so that it is inconvenient to operate when taking out or installing. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of impedance device that facilitates opening overhauling to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of impedance device that facilitates opening overhauling, comprising:

[0006] Shell body, upper flip cover, impedance circuit assembly;

[0007] Among them, the shell body is hollow and the shape of the upper part and the front side opening, the upper flip cover is L-shaped, and the rear end of the upper flip cover is connected with the shaft on both sides, the left and right sides of the rear side of the upper opening of the shell body are provided with shaft hole rotatingly connected with the shaft, and the front lower side of the upper flip cover is connected with the front opening lower side of the shell body by screw;

[0008] The inside of the shell body is provided with support strip, and the impedance circuit assembly is supported on the support strip.

[0009] Preferably, the left and right side walls of the shell body are provided with ventilation slots, and the ventilation slots are provided with dustproof nets.

[0010] Preferably, the impedance circuit assembly includes a substrate and a circuit assembly placed on the substrate, the substrate is supported on the support strip, and the substrate is provided with an air flow hollow slot.

[0011] Preferably, the lower surface of the upper flip cover is provided with a pressing column, and the bottom end of the pressing column is pressed on the edge of the upper surface of the impedance circuit assembly.

[0012] Preferably, the pressing column comprises a hollow and lower opening sliding cylinder, the upper end of the sliding cylinder is bonded with the lower surface of the upper turnover cover, the inside of the sliding cylinder is slidingly connected with a piston, the upper end of the piston is connected with a supporting spring, the lower end of the piston is provided with a pressing rod, and the pressing rod penetrates through the lower opening of the sliding cylinder and extends to the lower side of the sliding cylinder.

[0013] Preferably, the bottom end of the pressing rod is provided with a rubber sheet.

[0014] Preferably, the front wall of the upper turnover cover is provided with a turnover handle.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The upper turnover cover and the shell body can be relatively rotated, the impedance circuit assembly in the shell body can be exposed when the upper turnover cover is turned over, and thus the impedance circuit assembly is conveniently taken out or installed.

[0017] When the impedance circuit assembly is installed, the impedance circuit assembly is supported on the supporting strip, and after the upper turnover cover is closed, the impedance circuit assembly is pressed by the pressing column, so that the impedance circuit assembly is stably installed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a structural schematic view of the utility model;

[0019] Fig. 2 It is a structural schematic view of the utility model shell body, upper turnover cover and impedance circuit assembly;

[0020] Fig. 3 It is a structural schematic view of the utility model pressing column.

[0021] In the drawing: 1, shell body; 2, ventilation slot; 3, upper turnover cover; 4, turnover handle; 5, rotating shaft; 6, pressing column; 61, sliding cylinder; 62, piston; 63, supporting spring; 64, pressing rod; 65, rubber sheet; 7, supporting strip; 8, impedance circuit assembly. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0024] Embodiment one:

[0025] Please refer to Figs. 1-3 The utility model provides a technical scheme: an impedance device convenient to open and overhaul, comprising: shell body 1, upper turnover cover 3, impedance circuit component 8,

[0026] Among them, the shell body 1 is the shape of hollow and upper portion, front side opening, the upper turnover cover 3 is L-shaped, and the rear end of the upper turnover cover 3 is connected with the shaft 5 on both sides, the left and right sides of the rear side of the upper portion opening of the shell body 1 are provided with the shaft hole of rotationally connected with the shaft 5, and the front portion lower side of the upper turnover cover 3 is connected with the front portion opening lower side of the shell body 1 by screw, the inside of the shell body 1 is provided with support strip 7, and the impedance circuit component 8 is supported on the support strip 7.

[0027] The above content is analyzed: impedance circuit component 8 adopts prior art, the scheme does not change impedance circuit component 8, does not change the circuit structure composition, circuit connection mode of impedance circuit component 8, according to the demand, can set up connector and the like structure on the shell body 1.

[0028] When impedance circuit component 8 needs to be overhauled, the screw of the front end of the upper turnover cover 3 is taken down, the upper turnover cover 3 is turned over, so that impedance circuit component 8 is exposed, since impedance circuit component 8 is directly supported on the support strip 7, it is convenient to take and place.

[0029] Embodiment two:

[0030] Please refer to Figs. 1-3 The utility model provides a technical scheme based on embodiment one: the left and right side walls of the shell body 1 are provided with ventilation slot 2, and the ventilation slot 2 is provided with a dust screen.

[0031] The above content is analyzed: through the setting of ventilation slot 2, the air flow in and out of the shell body 1, and good heat dissipation effect is achieved.

[0032] Embodiment three:

[0033] Please refer to Figs. 1-3The utility model discloses a technical scheme based on example two: impedance circuit assembly 8 includes the circuit assembly of base plate and placing on base plate, the base plate supports on support strip 7, the base plate is opened with air flow openwork groove.

[0034] To the analysis of the above-mentioned content, the setting of air flow openwork groove makes the air between the upper and lower sides of the base plate also flow, promotes the flow between the upper and lower sides of the air, to accelerate the heat dissipation.

[0035] Example four:

[0036] Please refer to Figs. 1-3 The utility model discloses a technical scheme based on example one: the lower surface of upper flip cover 3 is provided with compression column 6, and the bottom end of compression column 6 is pressed at the edge of the upper surface of impedance circuit assembly 8.

[0037] To the analysis of the above-mentioned content, when upper flip cover 3 is closed, compression column 6 is pressed on impedance circuit assembly 8, and impedance circuit assembly 8 is compressed and stabilized.

[0038] Example five:

[0039] Please refer to Figs. 1-3 The utility model discloses a technical scheme based on example four: compression column 6 includes hollow and lower opening sliding cylinder 61, the upper end of sliding cylinder 61 is bonded with the lower surface of upper flip cover 3, the inside sliding connection of sliding cylinder 61 has piston 62, the upper end of piston 62 is connected with support spring 63, the lower end of piston 62 is provided with pressing rod 64, and pressing rod 64 penetrates the lower opening of sliding cylinder 61 and extends to the downside of sliding cylinder 61.The bottom end of pressing rod 64 is provided with rubber sheet 65.

[0040] To the analysis of the above-mentioned content: under the elastic force of support spring 63, piston 62 and pressing rod 64 stretch downwards, when upper flip cover 3 is turned off, the rubber sheet 65 at the bottom end of pressing rod 64 first contacts impedance circuit assembly 8, is supported by impedance circuit assembly 8, piston 62 and pressing rod 64 move to sliding cylinder 61, and support spring 63 is compressed, and support spring 63 generates the elastic force of pushing piston 62 and pressing rod 64 outward, so that piston 62 and pressing rod 64 are compressed on impedance circuit assembly 8.

[0041] Example six:

[0042] Please refer to Figs. 1-3 The utility model discloses a technical scheme based on example one: the front wall of upper flip cover 3 is provided with flip handle 4.

[0043] To the analysis of the above-mentioned content: the setting of flip handle 4 is convenient for the upper flip of upper flip cover 3 and the depression.

[0044] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be considered as limiting the claims involved.

[0045] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An impedance device that is easy to open and maintain, characterized in that, include: Outer shell (1), upper flip cover (3), impedance circuit assembly (8); The outer shell (1) is hollow and has an opening at the top and front. The upper flip cover (3) is L-shaped and has a rotating shaft (5) connected to both sides of the rear end of the upper flip cover (3). The left and right sides of the upper opening of the outer shell (1) are provided with shaft holes that are rotatably connected to the rotating shaft (5). The lower front side of the upper flip cover (3) is connected to the lower front opening of the outer shell (1) by screws. The housing (1) is provided with a support bar (7) inside, and the impedance circuit assembly (8) is supported on the support bar (7).

2. The impedance device for easy opening and maintenance according to claim 1, characterized in that: Ventilation slots (2) are provided on both the left and right side walls of the outer shell (1), and a dustproof net is provided inside the ventilation slots (2).

3. The impedance device for easy opening and maintenance according to claim 2, characterized in that: The impedance circuit assembly (8) includes a substrate and a circuit assembly placed on the substrate. The substrate is supported on a support bar (7), and an airflow perforation groove is formed on the substrate.

4. The impedance device for easy opening and maintenance according to claim 1, characterized in that: The lower surface of the upper flip cover (3) is provided with a pressing post (6), and the bottom end of the pressing post (6) presses against the edge of the upper surface of the impedance circuit assembly (8).

5. The impedance device for easy opening and maintenance according to claim 4, characterized in that: The clamping column (6) includes a hollow sliding cylinder (61) with an opening at the bottom. The upper end of the sliding cylinder (61) is bonded to the lower surface of the upper flip cover (3). A piston (62) is slidably connected inside the sliding cylinder (61). A support spring (63) is connected to the upper end of the piston (62). A pressure rod (64) is provided at the lower end of the piston (62). The pressure rod (64) passes through the lower opening of the sliding cylinder (61) and extends to the lower side of the sliding cylinder (61).

6. The impedance device for easy opening and maintenance according to claim 5, characterized in that: A rubber sheet (65) is provided at the bottom end of the pressure rod (64).

7. The impedance device for easy opening and maintenance according to claim 1, characterized in that: The front wall of the upper flip cover (3) is provided with a flip handle (4).

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