JPH062655U - Electromagnetic induction equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] The purpose is to suppress structure propagation from vibrations of windings and cores that are the sound sources of electromagnetic induction equipment. [Structure] A coil, which is a sound source of an electromagnetic induction device, and contents of an iron core are hung from a top plate of a box that houses them by a flexible member such as a wire or a spring damper. [Effect] The structure propagation, which is one of the noise generation sources, is suppressed and only the medium propagation is achieved, and an electromagnetic induction device with low noise can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to noise reduction of an electromagnetic induction device.

[0002]

[Prior art]

 FIG. 3 is a front view showing the structure of the contents of a conventional electromagnetic induction device, and FIG. 4 is a side view thereof. In the figure, 1 is a winding wire inserted in a three-leg iron core (not shown), 2 is an upper end frame for fastening an upper core yoke, 3 is a lower end frame for fastening a lower core yoke, and 4 is an upper end. A frame, a lower end frame, that is, a clamp for tightening the iron core yoke, 6 and 7 are a cover and a tank which are outer boxes for loading the above-mentioned contents parts. Reference numeral 6a denotes a mounting plate welded to the lower surface of the cover 6, and has a structure in which the contents, that is, the winding and the iron core are hung from the cover 6 via a clamp 4.

Next, an operation mode, that is, a noise generation mechanism of the electromagnetic induction device will be described with reference to FIG. The side plate of the tank 7 passes through the medium propagation B of the cooling medium and the insulating medium by the vibration of the winding conductor of the winding 1 or the electromagnetic force between the coils and the magnetostriction of the iron core (not shown), that is, the vibration of the sound source A. On the other hand, by vibrating the sound source A, the side plate of the cover 6 is oscillated through the support structure of the clamp 4 and the mounting plate 6a, so-called structure propagation C. It can be roughly divided into propagation paths that cause sound radiation D, and the fact is that noise is generated by these sound radiation.

[0004]

[Problems to be solved by the device]

 Since the conventional electromagnetic induction device is configured as described above, when supplying a low noise transformer, it is necessary to take special measures such as lowering the magnetic flux density of the iron core or attaching a soundproof wall to the outer box. There was a problem.

The present invention has been made to solve the above problems, and an object thereof is to easily provide a low noise transformer without changing the conventional manufacturing method.

[0006]

[Means for Solving the Problems]

 The electromagnetic induction device according to the present invention is such that the winding and the iron core, which are the sound source, are suspended from the top plate of the outer box by a flexible member.

[0007]

[Action]

 In the electromagnetic induction device according to the present invention, a flexible member intervenes between the outer casing and the winding and iron core, which are the sound source, so that the edge of the vibration is cut off and the propagation of the structure is suppressed.

[0008]

【Example】

 Example 1. An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the internal structure of the electromagnetic induction device of the present invention, and FIG. 2 is a side view thereof. In the figure, 1 to 7 are the same parts as the above-mentioned conventional example. Reference numerals 5 and 6a denote a suspension plate and a mounting plate for suspending the so-called winding and iron core from the cover 6 with a wire 9. Further, numeral 8 indicates a steady rest for preventing the rolling of the contents during transportation.

Example 2. Although the wire 9 is used as the suspension member in the above embodiment, a spring damper may be used instead of the wire 9.

Next, the operation of the above-described embodiment, that is, the noise generation mechanism in the present invention will be described. The sound source A and the medium propagation B are the same as the conventional ones, but since the wire 9 or the spring damper is used as a hanging component of the sound source A of the present invention, the tank, the cover, the so-called external part from the sound source A are used. The structure propagation C to the box is greatly suppressed. Therefore, the sound emission D will be dependent only on the medium propagation B.

[0011]

[Effect of device]

 As described above, according to the present invention, since a wire or a flexible member such as a spring damper is used as a member for suspending the internal component, it is possible to easily and reliably cut the vibration edge from the sound source. There is an effect that a device with low noise can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing the internal structure of an electromagnetic induction device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view showing the internal structure of a conventional electromagnetic induction device.

FIG. 4 is a side view of FIG.

[Explanation of symbols]

 1 Winding 2 Upper End Frame 3 Lower End Frame 4 Tightening Plate 5 Hanging Plate 6 Cover 6a Mounting Plate 7 Tank 9 Wire

Claims (1)

[Scope of utility model registration request] 1. An electromagnetic induction device in which an iron core and winding contents are housed in an outer casing, and the iron core and winding contents are held in a suspended state from a top plate of the outer casing. In the electromagnetic induction device, the contents of the iron core and the winding are suspended from a top plate of an outer box via a flexible member.