Vibration reduction unit and transformer including same

Abstract

A vibration reduction unit and a transformer including the same are disclosed. The vibration reduction unit according to one aspect of the present invention includes a sound absorbing member that is accommodated in a filling space formed in a housing and configured to absorb vibrations or noise generated inside the housing, and a cover member that is coupled to the housing, the filling space being formed between a plurality of reinforcing ribs that are provided in the housing and extend in one direction, and the cover member may be coupled to cover the reinforcing ribs, the filling space, and the sound absorbing member accommodated in the filling space from the outside.

Description

[Technical Field]

[0001] The present invention relates to a vibration reduction unit and a transformer including the same, and more particularly to a vibration reduction unit capable of reducing vibration or noise generated during operation and radiated to the outside, and a transformer including the same. [Background technology]

[0002]

[0002] A transformer is a device that converts the value of AC voltage or AC current using electromagnetic induction. A transformer includes a coil that is connected to an external source of electricity and to which AC current is applied, and an iron core around which the coil is wound. A transformer may include multiple coils, each wound around an iron core.

[0003]

[0003] When an alternating current is applied to one of the coils, a magnetic flux is generated in the iron core. As the magnetic flux changes, an induced current flows through the other coil through electromagnetic induction. The induced current can be transmitted to an external load with a current or voltage different from the applied alternating current.

[0004]

[0004] The iron core of a transformer is formed by laminating multiple iron plates. When the transformer operates, magnetostriction occurs in the iron core. This magnetostriction can cause vibration or noise in the iron core. The generated vibration and noise can be transmitted to the outside and can have a negative impact on the environment in which the transformer is installed.

[0005]

[0005] Specifically, the generated vibrations can be transmitted to other components of the transformer and other devices connected to the transformer, which can cause instability in the coupling between the components of the transformer and the coupling between the transformer and other devices.

[0006]

[0006] Accordingly, techniques have been introduced to reduce the vibration or noise generated during the operation of the transformer.

[0007] Korean Patent Registration No. 10-1530347 discloses a dustproof support device for a substation transformer. Specifically, the dustproof support device supports the substation transformer and can block vibrations by absorbing the vibrations of the transformer itself and vibrations caused by external influences transferred to the transformer.

[0008]

[0008] However, the dustproof support device disclosed in the prior art document can only support a transformer of a predetermined size and weight. That is, if the weight or size of the transformer is changed, the dustproof support device must be redesigned to accommodate the increased weight or size. That is, the dustproof support device disclosed in the prior art document can only support a transformer of a predetermined size and weight, and it is difficult to support a transformer of a different size or weight.

[0009]

[0009] In addition, the dustproof support device disclosed in the prior art document is configured to support the transformer from below, which increases the height of the transformer and the dustproof support device, making it difficult to accommodate in an existing substation.

[0010] Korean Patent Publication No. 10-1661138 discloses a dustproof support device for a substation transformer. Specifically, the device includes buffer blocks stacked inside a box partially buried in the ground, and the transformer is connected to the buffer blocks to absorb vibrations of the transformer.

[0011] However, the dustproof support device disclosed in the above-mentioned prior art document is intended to be buried underground, and therefore, when a transformer is placed away from the ground, it is difficult to apply the dustproof support device disclosed in the above-mentioned prior art document.

[0012]

[0012] Furthermore, the dustproof support device disclosed in the prior art document is also configured to support the transformer from below, and therefore can absorb vibrations generated by the operation of the transformer from below, but it is difficult to reduce vibrations radiated in other directions. [Prior art documents] [Patent documents]

[0013] [Patent Document 1]

[0013] Korean Patent Registration No. 10-1530347 (2015.06.29.)

[0014] [Patent Document 2]

[0014] Korean Patent Registration No. 10-1661138 (October 10, 2016) Summary of the Invention [Problem to be solved by the invention]

[0015]

[0015] The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a vibration reduction part having a structure that can reduce vibration or noise radiated to the outside, and a transformer including the same.

[0016] Another object of the present invention is to provide a vibration reduction part having a structure capable of reducing vibration or noise along the direction of travel, and a transformer including the same.

[0017]

[0017] It is still another object of the present invention to provide a vibration reduction unit having a structure that is easy to install, and a transformer including the same.

[0018]

[0018] It is still another object of the present invention to provide a vibration reducing part having a structure that allows various modifications in material and structure, and a transformer including the same.

[0019]

[0019] It is still another object of the present invention to provide a vibration reduction unit having a structure capable of reducing radiated vibration or noise at various positions, and a transformer including the same.

[0020]

[0020] The objects of the present invention are not limited to those mentioned above, and other objects not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below. [Means for solving the problem]

[0021]

[0021] According to one aspect of the present invention, a vibration reduction unit is provided which includes a sound-absorbing member that is housed in a filled space formed in a housing and is configured to absorb vibrations or noise generated inside the housing, and a cover member that is connected to the housing, wherein the filled space is formed between a plurality of reinforcing ribs that are provided on the housing and extend in one direction, and the cover member is connected to cover the reinforcing ribs, the filled space, and the sound-absorbing member housed in the filled space from the outside.

[0022]

[0022] In this case, the cover member may be provided in the form of a plate, and may include a main cover that covers the reinforcing rib in the thickness direction, and a sub-cover that is connected to the main cover and covers the filling space along the extension direction of the reinforcing rib, thereby providing a vibration reduction part.

[0023]

[0023] In addition, the main cover and the sub-cover may be provided with a vibration reducing portion that seals the filling space.

[0024]

[0024] In this case, the sound absorbing member may be provided with a vibration reducing portion formed of a material that hardens after a predetermined time has passed.

[0025]

[0025] In addition, the sound absorbing member may be made of urethane foam, which is injected and filled into the filling space, thereby providing a vibration reducing portion.

[0026]

[0026] In this case, a vibration reduction part can be provided which includes a communication hole formed through the sub-cover and connecting the filling space with the outside, and a plug member connected to the communication hole and sealing the communication hole.

[0027]

[0027] In addition, a vibration reduction section can be provided in which multiple sub-covers are provided and arranged to cover multiple filling spaces, and the communication holes are formed in each of the multiple sub-covers.

[0028]

[0028] In this case, the cover member may be provided with a vibration reduction part including a main cover which is plate-shaped and is connected to the housing at a distance from the reinforcing rib along its thickness direction, and a sub-cover which is connected to the main cover and covers the filling space along the extension direction of the reinforcing rib.

[0029]

[0029] In addition, a plurality of filling spaces are formed, and each of the filling spaces is connected to the space formed by the main cover and the reinforcing rib being spaced apart, and the sound-absorbing material injected into any one of the plurality of filling spaces can flow into the other filling spaces, thereby providing a vibration reduction section.

[0030]

[0030] In this case, the cover member may be provided with a vibration reducing part including a main cover which is plate-shaped and connected to the reinforcing rib along its thickness direction, a sub-cover which is connected to the main cover and covers the filling space along the extension direction of the reinforcing rib, and a communicating part which is recessed on one side of the main cover facing the reinforcing rib and extends in the direction in which the multiple reinforcing ribs are spaced apart.

[0031]

[0031] In addition, a vibration reduction section can be provided in which multiple filling spaces are formed, each of which is connected to the connecting section, and the sound-absorbing material injected into any one of the multiple filling spaces can flow into the other filling spaces.

[0032]

[0032] Furthermore, according to one aspect of the present invention, there is provided a transformer comprising: an electric current conducting unit that is electrically connected to an external power source and a load, and that transforms the power transmitted from the power source and supplies it to the load; a housing including an accommodating space for the electric current conducting unit and a wall portion surrounding the accommodating space; and a vibration reducing unit that is coupled to the housing and configured to reduce vibrations or noise generated in the electric current conducting unit, wherein the vibration reducing unit comprises: a main cover that is positioned a predetermined distance away from the wall portion and is coupled to the wall portion; and a sound absorbing member that is filled in the space formed by the separation between the main cover and the wall portion and that reduces the noise or vibration.

[0033]

[0033] In this case, a transformer can be provided in which the housing includes a plurality of reinforcing ribs connected to the wall portion, protruding toward the main cover, extending in one direction, and spaced apart from each other, and a plurality of filling spaces formed between the reinforcing ribs and partially covered by the main cover, and the sound-absorbing member is accommodated in each of the plurality of filling spaces.

[0034]

[0034] In addition, a transformer can be provided in which the vibration reduction part includes a sub-cover connected to the main cover and covering other portions of the multiple filling spaces, a communication hole formed through the sub-cover and connecting the filling spaces with the accommodating space, and a plug member connected to the communication hole and sealing the communication hole.

[0035]

[0035] In this case, the main cover is positioned at a distance from the reinforcing rib, a predetermined space is formed between the main cover and the reinforcing rib, and the predetermined space is respectively connected to the multiple filling spaces, so that the sound-absorbing material that flows into any one of the multiple filling spaces can flow into other filling spaces among the multiple filling spaces, thereby providing a transformer.

[0036]

[0036] In addition, a transformer can be provided in which the vibration reduction portion is recessed outward from one surface of the main cover facing the wall portion and includes a communication portion extending along the direction in which the multiple reinforcing ribs are spaced apart, and the communication portion is respectively connected to the multiple filling spaces, so that the sound-absorbing material that flows into any one of the multiple filling spaces can flow into other filling spaces among the multiple filling spaces. [Effects of the Invention]

[0037]

[0037] With the above configuration, the vibration reduction unit according to the embodiment of the present invention and the transformer including the same can reduce vibration or noise radiated to the outside.

[0038]

[0038] First, the vibration reduction unit is provided with a sound-absorbing member. The sound-absorbing member forms the housing and is configured to contact the wall portion surrounding the storage space formed inside the housing. The sound-absorbing member is made of a material that can absorb vibrations or noise, such as urethane foam, rubber, or cork.

[0039]

[0039] The vibration reduction unit includes a cover member. The cover member includes a main cover that encases the sound-absorbing member in its thickness direction and a sub-cover that encases the sound-absorbing member in its height direction. The sound-absorbing member is prevented from being arbitrarily exposed to the outside by the main cover and the sound-absorbing member.

[0040]

[0040] Vibrations or noise generated by the operation of the conductive part housed in the housing space are transmitted to the wall part and then absorbed by the sound-absorbing member. The vibrations or noise that pass through the sound-absorbing member are reduced compared to the vibrations or noise that were initially generated, and can then be radiated to the outside through the cover member.

[0041]

[0041] Therefore, vibration or noise radiated to the outside of the transformer can be reduced.

[0042]

[0042] Furthermore, with the above-described configuration, the vibration reduction unit according to the embodiment of the present invention and the transformer including the same can reduce vibration or noise along the direction of travel.

[0043]

[0043] First, the vibration reduction unit is attached to the outside of the wall portion that constitutes the housing. Vibrations or noise generated in the current-carrying unit pass through the storage space inside the housing, the wall portion, and the sound-absorbing member in that order, and then are radiated to the outside through the cover member.

[0044]

[0044] That is, the vibration reduction unit is arranged on the path along which the generated vibration or noise travels, and can reduce the generated vibration or noise.

[0045]

[0045] Therefore, vibration or noise radiated to the outside of the transformer can be reduced more effectively.

[0046]

[0046] Furthermore, due to the above configuration, the vibration reduction unit according to the embodiment of the present invention and the transformer including the same can be easily installed.

[0047] First, the vibration damping portion is coupled to the outside of the wall portion constituting the housing, which means that the internal structure of the housing does not need to be modified to accommodate the vibration damping portion.

[0048]

[0048] The sound absorbing member of the vibration reduction unit is accommodated in a filling space formed between a plurality of reinforcing ribs formed on the wall portion. In an embodiment in which the sound absorbing member is a solid material, such as rubber or cork, the sound absorbing member can be manufactured in a shape corresponding to the shape of the filling space and accommodated in the filling space.

[0049]

[0049] When the sound-absorbing member is accommodated, the cover member is attached to cover the filling space and the sound-absorbing member accommodated therein from the outside. The sound-absorbing member is prevented from being arbitrarily exposed to the outside by the wall portion, the reinforcing ribs formed on the wall portion, and the cover member.

[0050]

[0050] Therefore, since excessive design changes are not required to provide the vibration reduction unit, installation and maintenance of the vibration reduction unit can be facilitated.

[0051]

[0051] Furthermore, due to the above configuration, the vibration reduction unit according to the embodiment of the present invention and the transformer including the same can be modified into various forms in terms of material and structure.

[0052]

[0052] First, the sound absorbing member may be formed of a material that is flowable but hardens after a predetermined time has passed. In one embodiment, the sound absorbing member may be made of urethane foam, and in the embodiment, the sound absorbing member may be injected through a gun or other device and placed in the filling space.

[0053]

[0053] In the above embodiment, the vibration reduction unit can be connected to the housing in a form in which the vibration reduction unit is surrounded by a sub-cover, the sound absorbing member is housed therein, and the main cover is connected thereto.

[0054]

[0054] The vibration reducing section may also be configured so that the sound absorbing material is supplied through a communication hole that penetrates the sub-cover and connects the filled space to the outside.

[0055]

[0055] Furthermore, the vibration reduction portion may be formed so that the plurality of filling spaces are connected to each other by a space formed by separating the main cover and the reinforcing rib or by a communication portion formed by a recess in the main cover. In the above embodiment, the sound absorbing material injected into one filling space through a single path can flow to the other filling spaces.

[0056]

[0056] Therefore, the vibration reduction portion can be provided with a variety of materials and structures, which can improve the degree of freedom in design.

[0057]

[0057] Furthermore, with the above-described configuration, the vibration reduction unit according to the embodiment of the present invention and the transformer including the same can reduce radiated vibration or noise at various positions.

[0058]

[0058] The vibration reduction portion may be provided on one or more of the walls surrounding the housing's storage space. In one embodiment, a vibration reduction portion may be provided on each of the walls. In the embodiment, the vibration reduction portion can reduce vibration or noise on each side traveling in the radial direction of the current-carrying portion.

[0059]

[0059] Therefore, vibrations or noises generated in the current-carrying parts can be radiated to the outside of the transformer after being reduced in various positions and directions.

[0060]

[0060] The effects of the present invention are not limited to the effects described above, but should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description of the present invention or the claims. [Brief explanation of the drawings]

[0061] [Figure 1]

[0061] FIG. 1 is a perspective view showing a transformer according to an embodiment of the present invention. [Figure 2]

[0062] FIG. 2 is a partially open perspective view showing the interior of the transformer of FIG. 1. [Figure 3]

[0063] 2 is a perspective view showing a state in which the transformer of FIG. 1 is provided with a vibration reduction unit according to one embodiment of the present invention. FIG. [Figure 4]

[0064] FIG. 4 is a perspective view showing the vibration reduction section of FIG. 3. [Figure 5]

[0065] 4 is a diagram showing an example of a method of installing the vibration reduction unit of FIG. 3 in use. FIG. [Figure 6]

[0066] 4 is a view showing a state of use of another example of the installation method of the vibration reducer of FIG. 3. FIG. [Figure 7]

[0067] 2A and 2B are a perspective view and a side cross-sectional view showing the transformer of FIG. 1 and a vibration reducing section according to a modified example. [Figure 8]

[0068] 2A and 2B are a perspective view and a side cross-sectional view showing the transformer of FIG. 1 and a vibration reducing section according to another modified example. [Figure 9]

[0069] 2 is a partially exploded perspective view showing the transformer of FIG. 1 equipped with a vibration reduction unit according to another embodiment of the present invention; FIG. [Figure 10]

[0070] FIG. 10 is a side cross-sectional view showing the transformer and vibration reduction unit of FIG. 9. [Figure 11]

[0071] 10 is a side cross-sectional view showing the transformer of FIG. 9 and a vibration reducer according to a modified example. [Figure 12]

[0072] 10 is a side cross-sectional view showing the transformer of FIG. 9 and a vibration reducer according to another modified example. FIG. [Figure 13]

[0073] 10 is a side cross-sectional view showing the transformer of FIG. 9 and a vibration reducer according to another modified example. FIG. [Figure 14]

[0074] 1. FIG. 4 is a partially cutaway perspective view showing the transformer of FIG. 1 equipped with a vibration reduction unit according to still another embodiment of the present invention. [Figure 15]

[0075] FIG. 15 is a perspective view showing the vibration reduction section of FIG. [Figure 16]

[0076] FIG. 15 is an exploded perspective view showing the vibration reduction portion of FIG. [Figure 17]

[0077] 15(a) is a perspective view from another angle showing the vibration reducing portion of FIG. 14, and FIG. 15(b) is a plan view. [Figure 18]

[0078] FIG. 15 is a side cross-sectional view showing the vibration reduction section of FIG. [Figure 19]

[0079] FIG. 15 is a perspective view showing a modified example of the vibration reducer of FIG. [Figure 20]

[0080] 15 is a perspective view showing another modified example of the vibration reducer of FIG. 14. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0062]

[0081] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention may be realized in various different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention, parts that are not relevant to the description are omitted in the drawings, and the same or similar elements are designated by the same reference numerals throughout the specification.

[0063]

[0082] The words and terms used in this specification and claims should not be interpreted in a limited manner based on their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, in accordance with the principles that allow the inventor to define terms and concepts in order to best describe his or her invention.

[0064]

[0083] Therefore, the embodiments described in this specification and the configurations shown in the drawings correspond to a preferred embodiment of the present invention and do not represent the entire technical idea of ​​the present invention, and therefore, there may be various equivalents and modifications that replace the configurations at the time of filing of the present invention.

[0065]

[0084] In the following description, in order to clarify the features of the present invention, the description of some components may be omitted.

[0066]

[0085] 1. Definitions

[0086] The term "electrically conductive" as used in the following description means that one or more members are coupled to each other so as to be able to transmit an electric current or an electric signal. In one embodiment, the electrical connection may be established in a wired manner using a conductive member or in a wireless manner using Wi-Fi, Bluetooth, RFID, or the like.

[0067]

[0087] The term "communication" used in the following description means that one or more members are connected to each other so that they can communicate with each other. In one embodiment, the communication may be formed by opening the interiors of the members to each other, or may be formed by other members such as conduits, pipes, etc.

[0068]

[0088] The terms "upper", "lower", "left", "right", "front" and "rear" used in the following description will be understood with reference to the coordinate system set out throughout the accompanying drawings.

[0069]

[0089] 2. Description of the configuration of the transformer 10 according to an embodiment of the present invention

[0090] 1 to 3, a transformer 10 according to an embodiment of the present invention is shown. The transformer 10 according to an embodiment of the present invention is configured to reduce vibration or noise caused by magnetostriction that occurs in the iron core member 210 during operation. This can be achieved by vibration reduction units 300, 400, and 500 according to various embodiments, which will be described later.

[0070]

[0091] The transformer 10 is electrically connected to the outside. The transformer 10 can transmit a current whose voltage is to be regulated. The transformer 10 can transmit the current whose voltage has been regulated to the outside. In one embodiment, the current can be alternating current (AC).

[0071]

[0092] The operating principle of the transformer 10 is well known in the art, and therefore a detailed description thereof will be omitted.

[0072]

[0093] 1-2, the transformer 10 includes a housing 100 and a current-carrying portion 200. Furthermore, referring further to FIGS. 3-20, the transformer 10 according to the illustrated embodiment includes vibration-reducing portions 300, 400, 500 according to various embodiments.

[0073]

[0094] The configuration of a transformer 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings, but vibration reduction units 300, 400, and 500 according to each embodiment will be described in separate sections.

[0074]

[0095] The housing 100 forms the outer shape of the transformer 10. A space is formed inside the housing 100 to accommodate various components of the transformer 10. The space of the housing 100 is electrically connected to the outside, and a current to be transformed can be transmitted through the space. The transformed current can also be transmitted back to the outside.

[0075]

[0096] The housing 100 may have any shape that defines the outer shape of the transformer 10 and allows various components to be mounted therein. In the illustrated embodiment, the housing 100 has a rectangular cross section that is longer in the left-right direction than in the front-to-back direction, and is a rectangular prism that is elongated in the up-down direction.

[0076]

[0097] In the illustrated embodiment, the housing 100 includes a wall portion 110, a receiving space 120, and a reinforcing rib 130. Also, with further reference to (a) of Figure 5, the housing 100 according to the illustrated embodiment further includes a filling space 140.

[0077]

[0098] The wall portion 110 forms the outer periphery of the housing 100. The wall portion 110 surrounds a space formed inside the housing 100, that is, an accommodating space 120, from the outside.

[0078]

[0099] A plurality of wall portions 110 may be provided. The plurality of wall portions 110 may form the outer periphery of the housing 100 at different positions. In the illustrated embodiment, the wall portions 110 include a pair of wall portions 110 facing each other and spaced apart in the vertical direction, another pair of wall portions 110 facing each other and spaced apart in the horizontal direction, and one wall portion located on the rear side. Each pair of wall portions 110 is arranged to face each other with the accommodation space 120 between them.

[0079]

[0100] The wall portion 110 may have any shape that can form the outer periphery of the housing 100 and enclose the storage space 120. In the illustrated embodiment, the wall portion 110 has a rectangular cross section and is provided in the form of a rectangular plate that is elongated to a predetermined thickness.

[0080]

[0101] The wall portions 110 may be connected to each other at a predetermined angle. In the illustrated embodiment, adjacent wall portions 110 of the wall portions 110 are connected to each other perpendicularly. The manner in which the wall portions 110 are connected to each other may vary depending on the structure of the housing 100.

[0081]

[0102] The multiple wall portions 110 are arranged to surround the storage space 120 from multiple positions. In the illustrated embodiment, the multiple wall portions 110 are arranged to surround the storage space 120 from the front side, rear side, upper side, lower side, left side, and right side, respectively. As described above, a wall portion 110 may also be provided on the front side and arranged to surround the front side of the storage space 120.

[0082]

[0103] In the illustrated embodiment, the wall portion 110 includes a first wall 111 , a second wall 112 , a third wall 113 , a fourth wall 114 , and a fifth wall 115 .

[0083]

[0104] The first wall 111 is provided at one of the wall portions 110. The first wall 111 surrounds the receiving space 120 from one side. In the illustrated embodiment, the first wall 111 is disposed on the front side and surrounds the receiving space 120 from the front side.

[0084]

[0105] The second wall 112 is provided on the other one of the wall portions 110. The second wall 112 surrounds the storage space 120 from the other side. In the illustrated embodiment, the second wall 112 is disposed on the left side and surrounds the storage space 120 from the left side.

[0085]

[0106] The third wall 113 is provided on another one of the wall portions 110. The third wall 113 surrounds the storage space 120 from the other side. In the illustrated embodiment, the third wall 113 is disposed on the right side and surrounds the storage space 120 from the right side. The third wall 113 is disposed to face the second wall 112 across the storage space 120.

[0086]

[0107] The fourth wall 114 is provided on another one of the wall portions 110. The fourth wall 114 surrounds the storage space 120 from the other side. In the illustrated embodiment, the fourth wall 114 is disposed on the rear side and surrounds the storage space 120 from the rear side. The fourth wall 114 is disposed to face the first wall 111 across the storage space 120.

[0087]

[0108] A plurality of reinforcing ribs 130 are formed on one or more of the first wall 111, the second wall 112, the third wall 113, and the fourth wall 114. In the illustrated embodiment, the reinforcing ribs 130 are formed on all of the first to fourth walls 111, 112, 113, and 114. The reinforcing ribs 130 are configured to extend in the vertical direction and reinforce the rigidity of the first to fourth walls 111, 112, 113, and 114.

[0088]

[0109] The fifth wall 115 is provided on another one of the wall portions 110. The fifth wall 115 is arranged to cover the storage space 120. In the illustrated embodiment, the fifth wall 115 is arranged on the upper side and surrounds the storage space 120 from above.

[0089]

[0110] Although not shown in the drawings, the wall portion 110 may include another wall that surrounds the receiving space 120 from below. The another wall may be disposed on the lower side to surround the receiving space 120 from below. In the embodiment, the another wall is disposed to face the fifth wall 115 across the receiving space 120.

[0090]

[0111] Meanwhile, the vibration reduction units 300, 400, and 500 according to the respective embodiments of the present invention may be provided on one or more of the first to fourth walls 111, 112, 113, and 114. This will be described in detail later.

[0091]

[0112] The accommodating space 120 is a space formed inside the housing 100. The accommodating space 120 accommodates various components of the transformer 10. In one embodiment, the accommodating space 120 can accommodate the current-carrying part 200 and the vibration damping parts 400 and 500 according to each embodiment. The accommodating space 120 is a space formed by being surrounded by a plurality of wall parts 110.

[0092]

[0113] The accommodating space 120 is electrically connected to the outside. The current to be transformed can be transmitted to the components accommodated in the accommodating space 120. In addition, the current whose voltage has been increased or decreased by the current-carrying unit 200 can be transmitted to the outside. To this end, the accommodating space 120 can partially accommodate a plurality of conductive wire members (not shown) extending from the outside.

[0093]

[0114] The reinforcing ribs 130 are connected to the wall portion 110 and reinforce the rigidity of the wall portion 110. The reinforcing ribs 130 are formed to extend in one direction in which the wall portion 110 extends, that is, in the vertical direction in the illustrated embodiment.

[0094]

[0115] A plurality of reinforcing ribs 130 may be provided. The plurality of reinforcing ribs 130 may be arranged spaced apart from one another along other directions in which the wall portion 110 extends. In the embodiment shown in Fig. 1, the reinforcing ribs 130 are arranged spaced apart from one another along the front-rear direction.

[0095]

[0116] The reinforcing ribs 130 may be formed at a plurality of positions. As described above, a plurality of wall portions 110 may be provided and arranged to surround the accommodating space 120 from various directions. Thus, the reinforcing ribs 130 may be formed for each of the plurality of wall portions 110.

[0096]

[0117] In the embodiment shown, the reinforcing ribs 130 are formed on the first to fourth walls 111, 112, 113, and 114, respectively.

[0097]

[0118] The reinforcing rib 130 may have any shape that can be connected to the wall portion 110 to reinforce the rigidity of the wall portion 110. In the illustrated embodiment, the reinforcing rib 130 is provided in the form of a column that extends in the vertical direction and has a predetermined thickness toward the outside.

[0098]

[0119] 5, the reinforcing rib 130 includes a first reinforcing rib 131 and a second reinforcing rib 132. The reinforcing rib 130 may include a plurality of portions extending in different directions.

[0099]

[0120] The first reinforcing rib 131 is formed to extend in one direction, in the vertical direction in the illustrated embodiment, and is configured to reinforce the rigidity of the wall portion 110. The first reinforcing rib 131 may be formed to extend in the height direction of the housing 100.

[0100]

[0121] A plurality of first reinforcing ribs 131 may be formed. The plurality of first reinforcing ribs 131 may be arranged spaced apart from each other in other directions. In the illustrated embodiment, the first reinforcing ribs 131 are arranged spaced apart in the horizontal direction.

[0101]

[0122] That is, the multiple first reinforcing ribs 131 provided on the wall 111 and the fourth wall 114 are spaced apart in the left-right direction. Also, the multiple first reinforcing ribs 131 provided on the second wall 112 and the third wall 113 are spaced apart in the front-rear direction.

[0102]

[0123] A space formed by the plurality of first reinforcing ribs 131 spaced apart may be defined as a filling space 140. The filling space 140 may be filled with a sound absorbing member 320 of the vibration reduction unit 300, which will be described later, to reduce vibration or noise generated in the current-carrying unit 200.

[0103]

[0124] Second reinforcing ribs 132 extend between the plurality of first reinforcing ribs 131 .

[0104]

[0125] The second reinforcing rib 132 is formed to extend in another direction, in the horizontal direction in the illustrated embodiment, and is configured to reinforce the rigidity of the wall portion 110. The second reinforcing rib 132 also extends between the plurality of first reinforcing ribs 131 and is configured to reinforce the rigidity of the first reinforcing ribs 131 that are spaced apart from one another.

[0105]

[0126] The second reinforcing ribs 132 may be formed to extend in the cross-sectional direction of the housing 100. In the illustrated embodiment, the second reinforcing ribs 132 extending from the first wall 111 and the fourth wall 114 may extend in the left-right direction. Also, the second reinforcing ribs 132 extending from the second wall 112 and the third wall 113 may extend in the front-rear direction.

[0106]

[0127] A plurality of second reinforcing ribs 132 may be formed. The plurality of second reinforcing ribs 132 may be spaced apart in the one direction. In the illustrated embodiment, the second reinforcing ribs 132 are spaced apart in the extension direction of the first reinforcing rib 131, i.e., in the up-down direction.

[0107]

[0128] A space formed by spacing the plurality of second reinforcing ribs 132 may also be defined as a filling space 140. The filling space 140 may be filled with a sound absorbing member 320 of the vibration reduction unit 300, which will be described later, to reduce vibration or noise generated in the current-carrying unit 200. This will be described in detail later.

[0108]

[0129] The filled space 140 is a space formed between the multiple reinforcing ribs 130. The filled space 140 is surrounded on both horizontal sides by the multiple reinforcing ribs 130. The filled space 140 is also surrounded on the other horizontal side by the wall portion 110, and each end in the vertical direction and the other horizontal side are surrounded by the cover member 310 of the vibration reduction unit 300.

[0109]

[0130] 5, there is shown a fill space 140 formed in the first wall 111. In the embodiment shown, the left and right sides of the fill space 140 are surrounded by first reinforcing ribs 131. The rear side of the fill space 140 is surrounded by the first wall 111, and the front, upper, and lower sides of the fill space 140 are surrounded by a cover member 310.

[0110]

[0131] The filling space 140 may be divided into a plurality of small spaces. The divisions are formed by a plurality of reinforcing ribs 130. That is, referring to (a) of FIG. 5, the filling space 140 is divided horizontally by a plurality of first reinforcing ribs 131 arranged spaced apart from each other. The filling space 140 is also divided vertically by a plurality of second reinforcing ribs 132 arranged spaced apart from each other.

[0111]

[0132] The multiple spaces formed by dividing the filling space 140 are not arbitrarily connected to each other by the reinforcing ribs 130. However, the multiple spaces may be connected to each other by a vibration reduction part 300 according to an embodiment of the present invention, which will be described later.

[0112]

[0133] The filled space 140 may accommodate the sound absorbing member 320 of the vibration reduction unit 300. The sound absorbing member 320 is configured to absorb vibrations or noise generated in the current-carrying unit 200 and transmitted to the wall unit 110. This prevents the generated vibrations or noise from being emitted to the outside. This will be described in detail later.

[0113]

[0134] The current-carrying unit 200 increases or decreases the voltage of the current transmitted from the outside. As a result, it can be said that the current-carrying unit 200 substantially performs the function of the transformer 10.

[0114]

[0135] The conductive part 200 is accommodated in the internal space of the housing 100, i.e., the accommodating space 120. The accommodating space 120 is defined by being surrounded by a plurality of wall parts 110, and therefore the conductive part 200 accommodated in the accommodating space 120 is surrounded by the plurality of wall parts 110 and is not arbitrarily exposed to the outside.

[0115]

[0136] Therefore, the current-carrying unit 200 is not damaged by the environment outside the transformer 10. In addition, workers who are near the transformer 10 can be physically separated from the current-carrying unit 200, thereby preventing safety accidents caused by the current flowing through the current-carrying unit 200.

[0116]

[0137] The current-carrying unit 200 is electrically connected to the outside. The current may be provided by a conductive member (not shown) that connects the receiving space 120 to the outside. The process of increasing or decreasing the voltage of the current by the current-carrying unit 200 is a well-known technique, and therefore a detailed description thereof will be omitted.

[0117]

[0138] In the illustrated embodiment, the current-carrying portion 200 includes a core member 210 , a winding member 220 , and a support frame 230 .

[0118]

[0139] The iron core member 210 forms the structure of the current-carrying unit 200. A plurality of winding members 220 that are electrically connected to the outside are wound around the iron core member 210. When a current is applied to one or more of the plurality of winding members 220, a magnetic flux is generated in the iron core member 210. The generated magnetic flux generates an induced electromotive force in one or more other of the plurality of winding members 220.

[0119]

[0140] The iron core member 210 may be formed by stacking a plurality of plates. In one embodiment, the iron core member 210 is formed by stacking a plurality of plates having a thickness in the front-rear direction.

[0120]

[0141] The multiple plates that make up the iron core member 210 may be made of any material that can generate magnetic flux due to current flowing through the winding member 220. In one embodiment, the plates may be made of wrought iron material.

[0121]

[0142] The core member 210 may be formed in any shape that allows a plurality of winding members 220 to be wound around it to form a magnetic flux.

[0122]

[0143] The transformer 10 according to the embodiment of the present invention may include the vibration reduction unit 400 according to another embodiment, thereby reducing vibration or noise caused by magnetostriction occurring in the iron core member 210. This will be described in detail later.

[0123]

[0144] The winding member 220 is wound around the iron core member 210. A current applied to the winding member 220 generates a magnetic flux in the iron core member 210, and the current can be increased or decreased in voltage by the induced electromotive force caused by the generated magnetic flux and transmitted to the outside.

[0124]

[0145] The winding member 220 is electrically connected to the outside. A current to be stepped up or stepped down can be transmitted to the winding member 220. The stepped-up or stepped-down current can be transmitted to the outside.

[0125]

[0146] The winding member 220 is wound around the core member 210. Specifically, the winding member 220 is wound around a portion of the core member 210 that is formed to extend in the height direction, in the illustrated embodiment, in the vertical direction.

[0126]

[0147] The winding member 220 is housed in the core member 210. Specifically, the winding member 220 is housed in a space surrounded by the portions formed to extend in the height direction.

[0127]

[0148] There may be a plurality of winding members 220. The plurality of winding members 220 may be arranged spaced apart from one another and wound around the core member 210 at positions different from one another.

[0128]

[0149] In the illustrated embodiment, three winding members 220 are provided and are spaced apart from one another. The winding members 220 do not contact one another.

[0129]

[0150] Any one of the plurality of winding members 220 is electrically connected to the outside and can transmit a current to be boosted or dropped, while another of the plurality of winding members 220 is electrically connected to the outside and can transmit a current whose voltage has been boosted or dropped to the outside.

[0130]

[0151] A current induced by a current passed through any one of the winding members 220 may be passed through the remaining winding member 220 among the plurality of winding members 220. In addition, the remaining winding member 220 may induce a current in the other winding member 220 through the induced current.

[0131]

[0152] The winding member 220 may be provided in any form capable of generating an induced electromotive force when wound around the iron core member 210. In the illustrated embodiment, the winding member 220 has a circular cross section with a hollow interior and is shaped like a cylinder elongated in the vertical direction.

[0132]

[0153] The winding members 220 may be provided in any form that allows a current induced by a current passed through any one of the winding members 220. In one embodiment, the winding members 220 may be provided in the form of a coil.

[0133]

[0154] The support frame 230 supports the core member 210 and the winding member 220 wound around the core member 210. The support frame 230 can be connected to the core member 210 and the housing 100, respectively.

[0134]

[0155] The support frame 230 may be made of a highly rigid material. In one embodiment, the support frame 230 may be made of an alloy material containing iron (Fe).

[0135]

[0156] The support frame 230 may be formed in a shape corresponding to the iron core member 210. In the illustrated embodiment, the iron core member 210 is formed to have a rectangular cross section having a length in the left-right direction and a height in the up-down direction, so that the support frame 230 may also be formed to extend in the left-right direction.

[0136]

[0157] The support frame 230 can be coupled to the iron core member 210 at a plurality of positions to support the iron core member 210. In the illustrated embodiment, the support frame 230 is formed to surround the upper and lower ends of the iron core member 210 from the outside.

[0137]

[0158] As will be described later, the transformer 10 according to the embodiment of the present invention includes a vibration reduction unit 400 connected to each of the iron core member 210, the support frame 230, and the housing 100. The vibration reduction unit 400 further supports the iron core member 210 and the support frame 230 and is configured to reduce vibrations or noise generated in the iron core member 210 and the support frame 230. This will be described in detail later.

[0138]

[0159] 3. Description of the vibration reduction unit 300 according to one embodiment of the present invention

[0160] 3 to 8, a transformer 10 according to an embodiment of the present invention includes a vibration reduction unit 300. The vibration reduction unit 300 according to this embodiment is provided in the housing 100 and configured to reduce vibration or noise.

[0139]

[0161] Specifically, the vibration reduction unit 300 is coupled to the wall unit 110 of the housing 100 and is configured to absorb vibrations or noise transmitted from the current-carrying unit 200 to the wall unit 110. This can reduce the amount of vibrations or noise radiated to the outside of the transformer 10.

[0140]

[0162] The vibration reduction portion 300 is coupled to the wall portion 110. In the embodiment shown in Fig. 3, the vibration reduction portion 300 is shown to be provided on the first wall 111 on the front side. Alternatively, the vibration reduction portion 300 may be provided on one or more walls including the filled space 140 formed between the reinforcing ribs 130, i.e., the second to fourth walls 112, 113, and 114.

[0141]

[0163] That is, the vibration reduction unit 300 may be provided on one or more of the walls.

[0142]

[0164] In the illustrated embodiment, the vibration reduction unit 300 includes a cover member 310, a sound absorbing member 320, a communication hole 330, a plug member 340, and a communication portion 350. Of the above components, the communication hole 330, the plug member 340, and the communication portion 350 may be provided in various embodiments of the vibration reduction unit 300.

[0143]

[0165] The cover member 310 forms the outer shape of the vibration reduction unit 300. The cover member 310 seals the sound absorbing member 320 housed in the filled space 140. In addition, the cover member 310 fixes and supports the sound absorbing member 320 to prevent it from accidentally leaking or being exposed to the outside.

[0144]

[0166] The cover member 310 is coupled to the wall portion 110. Specifically, the cover member 310 is coupled to the outer surface of the reinforcing rib 130, covering the filling space 140 formed in the wall portion 110. In the embodiment shown in FIGS. 3 to 5, the cover member 310 is coupled to the front side surface of the reinforcing rib 130, and is configured to cover the filling space 140 from the front side.

[0145]

[0167] There may be provided a plurality of cover members 310. The plurality of cover members 310 may be respectively coupled to the plurality of wall portions 110. As an example, four cover members 310 may be provided and coupled to the first to fourth walls 111, 112, 113, and 114, respectively.

[0146]

[0168] The cover member 310 can be coupled to the wall portion 110 while covering from the outside the reinforcing ribs 130 and the sound absorbing member 320 housed in the filling space 140. In the illustrated embodiment, the cover member 310 is coupled to the reinforcing ribs 130 formed on the first wall 111 and the sound absorbing member 320 housed in the filling space 140 while covering them from the front side, bottom side, and top side.

[0147]

[0169] The cover member 310 may include multiple portions. The multiple portions of the cover member 310 may be coupled to the wall portion 110 at different positions to cover the reinforcing rib 130, the filling space 140, and the sound absorbing member 320 housed in the filling space 140. In the illustrated embodiment, the cover member 310 includes a main cover 311 and a sub-cover 312.

[0148]

[0170] The main cover 311 forms one of the multiple parts of the cover member 310. The main cover 311 is coupled to the wall portion 110, covering the reinforcing ribs 130, the filled space 140, and the sound absorbing member 320 housed in the filled space 140 along its thickness direction. In the illustrated embodiment, the main cover 311 is coupled to the first wall 111 so as to cover the reinforcing ribs 130, the filled space 140, and the sound absorbing member 320 housed therein of the first wall 111 from the front side.

[0149]

[0171] Although not shown in the drawings, vibration reduction parts 300 may be provided on the second to fourth walls 112, 113, and 114. In this case, it will be understood that the main cover 311 is coupled to each of the walls 112, 113, and 114 from the left, right, and rear sides, respectively, to cover the reinforcing rib 130, the filled space 140, and the sound absorbing member 320 housed therein.

[0150]

[0172] The main cover 311 may be plate-shaped. In the illustrated embodiment, the main cover 311 is a polygonal plate-shaped cross section having a longer horizontal extension length than a vertical extension length and a thickness in the front-rear direction. The shape of the main cover 311 may be changed depending on the shape of the wall portion 110 and the shape and arrangement of the reinforcing ribs 130.

[0151]

[0173] The main cover 311 is continuous with the sub-cover 312 .

[0152]

[0174] The sub-cover 312 forms another part of the plurality of parts of the cover member 310. The sub-cover 312 is coupled to the wall portion 110 in a direction different from that of the main cover 311, covering the reinforcing rib 130, the filled space 140, and the sound absorbing member 320 housed in the filled space 140.

[0153]

[0175] A plurality of sub-covers 312 may be provided. The plurality of sub-covers 312 may be coupled to the wall portion 110 while respectively covering the plurality of filling spaces 140 formed between the plurality of reinforcing ribs 131.

[0154]

[0176] The sub-covers 312 may be provided in multiple pairs. The multiple pairs of sub-covers 312 may be coupled to the wall portion 110 at different positions from each other, covering the reinforcing rib 130, the filling space 140, and the sound absorbing member 320 housed in the filling space 140.

[0155]

[0177] In the embodiment shown in FIG. 5, a pair of sub-covers 312 are provided, one located on the upper side and the other on the lower side, facing each other with the filling space 140 in between.

[0156]

[0178] Seven upper sub-covers 312 are provided and are arranged to cover the upper sides of the seven filling spaces 140 formed between the eight reinforcing ribs 130 (i.e., the first reinforcing ribs 131), respectively. Seven lower sub-covers 312 are also provided and are arranged to cover the lower sides of the seven filling spaces 140, respectively.

[0157]

[0179] The sub-cover 312 is continuous with the main cover 311. The main cover 311 and the sub-cover 312 may be continuous at a predetermined angle. In the embodiment shown in Figure 5, the sub-cover 312 and the main cover 311 extend perpendicular to each other.

[0158]

[0180] Since the sub-cover 312 and the main cover 311 are arranged to be continuous with each other, the sound absorbing member 320 housed in the filled space 140 is not arbitrarily exposed to the outside, thereby preventing damage to the sound absorbing member 320 due to the external environment.

[0159]

[0181] Referring to FIG. 5, a process of installing the vibration reduction unit 300 according to an embodiment on the wall unit 110 is shown.

[0160]

[0182] 5(a), the sound absorbing member 320 is accommodated in the filled space 140. As described above, the filled space 140 is divided into a plurality of small spaces by a plurality of first reinforcing ribs 131 and second reinforcing ribs 132. The sound absorbing member 320 can be accommodated in each of the divided small spaces.

[0161]

[0183] In this case, it is preferable that the sub-cover 312 that covers the filling space 140 in its height direction, i.e., from the top and bottom, is already attached. That is, in the above embodiment, the sub-cover 312 can limit the extension distance of the filling space 140 in the top and bottom directions. Therefore, the amount of sound-absorbing material 320 to be filled in the filling space 140 can be accurately calculated, which can improve work efficiency.

[0162]

[0184] 5(b), there is shown a state in which the main cover 311 is attached after the filling space 140 is filled with the sound absorbing member 320. The main cover 311 is attached to the wall portion 110, covering the plurality of first reinforcing ribs 131, second reinforcing ribs 132, the filling space 140 formed therebetween, and the sound absorbing member 320 accommodated therein.

[0163]

[0185] In the illustrated embodiment, the rear side surfaces of the main cover 311 may be respectively coupled to the front side surfaces of the first reinforcing rib 131 and the second reinforcing rib 132. Also, the upper and lower edges of the main cover 311 may be respectively coupled to and continuous with the front edge of the sub-cover 312.

[0164]

[0186] Although not shown in the drawings, a fastening member may be provided to maintain the connection between the main cover 311 and the wall portion 110. The fastening member (not shown) may be provided in the form of a screw member or the like that is connected to the main cover 311 and the first reinforcing rib 131 through the main cover 311.

[0165]

[0187] The sound absorbing member 320 may be made of any material that can transmit and absorb external vibrations or noise. In one embodiment, the sound absorbing member 320 may be made of urethane foam. Alternatively, the sound absorbing member 320 may be made of materials such as styrofoam or rubber.

[0166]

[0188] The sound absorbing member 320 is housed in the filling space 140. In an embodiment in which the sound absorbing member 320 is made of urethane foam, the sound absorbing member 320 can be filled into the filling space 140 by a spray method.

[0167]

[0189] In an embodiment in which the sound absorbing member 320 is made of polystyrene foam or rubber, the sound absorbing member 320 may be formed in a shape corresponding to the shape of the partitioned small spaces. In this embodiment, the sound absorbing member 320 may be inserted and coupled to each of the small spaces.

[0168]

[0190] The sound absorbing member 320 housed in the filled space 140 can be sealed to prevent any communication with the outside. That is, in the illustrated embodiment, the housed sound absorbing member 320 is surrounded on the left and right sides by the first reinforcing rib 131. The housed sound absorbing member 320 is also surrounded on the top and bottom sides by the sub-cover 312, the front side of which is surrounded by the main cover 311, and the rear side of which is surrounded by the wall body portion 110, which in the illustrated embodiment is the first wall 111.

[0169]

[0191] Therefore, the vibration reduction unit 300 according to this embodiment is configured to fill the filling space 140 formed between the reinforcing ribs 130 already provided on the wall unit 110 with the sound absorbing member 320. The filled sound absorbing member 320 can absorb the vibration or noise transmitted from the current-carrying unit 200. As a result, the amount of vibration or noise radiated to the outside of the transformer 10 can be reduced.

[0170]

[0192] Furthermore, the filling space 140 is already formed in the wall portion 110. Therefore, since the vibration reduction portion 300 according to this embodiment is provided, no excessive design change is required, and workability can be improved.

[0171]

[0193] 6 shows a modified example of the vibration reduction unit 300 according to this embodiment. In this modified example, the vibration reduction unit 300 further includes a communication hole 330 and a plug member 340.

[0172]

[0194] In this modification, the cover member 310 may be first attached to the wall portion 110, and then the sound absorbing member 320 may be filled in. The structure and function of the cover member 310 are the same as those of the cover member 310 according to the above-described embodiment, and therefore, a duplicated description will be omitted below.

[0173]

[0195] In this modification, the sound absorbing member 320 may be formed of a material that is flowable but hardens after a predetermined time has passed, i.e., the sound absorbing member 320 may be made of urethane foam.

[0174]

[0196] The communication hole 330 connects the filling space 140, which is enclosed and sealed by the cover member 310, with the outside. The communication hole 330 is formed through the cover member 310 and functions as a passage through which the sound absorbing member 320 can be injected. In the illustrated embodiment, the communication hole 330 is formed through the sub-cover 312 located on the upper side. Although not shown in the drawings, the communication hole 330 may also be formed through the sub-cover 312 located on the lower side.

[0175]

[0197] A plurality of communication holes 330 may be formed. The plurality of communication holes 330 may be formed penetrating through each of the plurality of sub-covers 312. In the embodiment shown in Fig. 6, a communication hole 330 is formed in each of the seven sub-covers 312, for a total of seven communication holes 330.

[0176]

[0198] Therefore, an operator can inject the sound absorbing material 320 by inserting a gun or the like into the filling space 140 through the communication hole 330 and spraying the sound absorbing material 320 .

[0177]

[0199] Once the injection of the sound absorbing material 320 is complete, the communication hole 330 must be closed to prevent any exposure of the sound absorbing material 320. For this purpose, the vibration reduction part 300 according to this modification includes a plug member 340.

[0178]

[0200] The plug member 340 is inserted into and coupled to the communication hole 330 to close the communication hole 330. The plug member 340 blocks any communication between the filling space 140 and the sound absorbing member 320 housed in the filling space 140 and the outside.

[0179]

[0201] A plurality of plug members 340 may be provided. The plurality of plug members 340 may be inserted and coupled to the plurality of communication holes 330, respectively. In the embodiment shown in Fig. 6, seven plug members 340 are provided and inserted into the seven communication holes 330, respectively.

[0180]

[0202] In the illustrated embodiment, the plug member 340 is formed by a plurality of cylinders having different cross-sectional areas that are successively arranged in the height direction. The shape of the plug member 340 can be changed depending on the shape of the communication hole 330.

[0181]

[0203] As described above, in an embodiment in which the communication holes 330 are also formed in the lower sub-cover 312, the plug members 340 may also be provided in the same number as the communication holes 330 formed in the lower sub-cover 312, and may be configured to block each communication hole 330.

[0182]

[0204] In the vibration reduction unit 300 according to this modification, the cover member 310 may be first coupled to the wall body 110, and then the sound absorbing member 320 may be filled in. In this case, an operator may use a member such as a gun to inject the sound absorbing member 320 into the filling space 140, and then close the communication hole 330 with the plug member 340, thereby easily installing the vibration reduction unit 300.

[0183]

[0205] 7 shows another modified example of the vibration reduction unit 300 according to this embodiment. In this modified example, the cover member 310 may be first coupled to the wall unit 110, and then the sound absorbing member 320 may be filled in. The structure and function of the cover member 310 are the same as those of the cover member 310 according to the above-described embodiment, and therefore, a duplicated description will be omitted below.

[0184]

[0206] In this modification, the sound absorbing member 320 may be formed of a material that is flowable but hardens after a predetermined time has passed, i.e., the sound absorbing member 320 may be made of urethane foam.

[0185]

[0207] In this modified example, the main cover 311 is disposed so as to be spaced apart from the first reinforcing rib 131 in the thickness direction, which in the illustrated embodiment is the front-rear direction.

[0186]

[0208] That is, referring to (b) of Figure 7, the thickness of the first reinforcing rib 131 can be defined as the first distance d1, the thickness of the filled sound-absorbing material 320 can be defined as the second distance d2, and the longest distance between the main cover 311 and the wall portion 110 can be defined as the third distance d3.

[0187]

[0209] In the above embodiment, the difference between the second distance d2 and the first distance d1 may be understood as the distance between the main cover 311 and the first reinforcing rib 131. In this case, the difference between the third distance d3 and the second distance d2 may be understood as the thickness of the main cover 311.

[0188]

[0210] As a result, a predetermined space is formed between the surfaces where the main cover 311 and the first reinforcing rib 131 face each other, that is, in the illustrated embodiment, between the rear side surface of the main cover 311 and the front side surface of the first reinforcing rib 131. It will be understood that the predetermined space between the main cover 311 and the first reinforcing rib 131 has a width equal to the difference between the distance d1 and the second distance d2.

[0189]

[0211] Therefore, the plurality of small spaces formed by dividing the filling space 140 by the plurality of reinforcing ribs 130 can be in communication with each other through the predetermined space. Therefore, even when the vibration reduction part 300 according to this modification has a single communication hole (not shown), the sound absorbing material 320 injected into one small space can flow into another small space through the communication hole (not shown).

[0190]

[0212] This can simplify the manufacturing process of the vibration reduction section 300 and the manufacturing process of joining the vibration reduction section 300 to the wall section 110.

[0191]

[0213] 8 shows another modified example of the vibration reduction unit 300 according to this embodiment. In this modified example, the vibration reduction unit 300 further includes a communication portion 350.

[0192]

[0214] In this modification, the cover member 310 may be first coupled to the wall portion 110, and then filled with the sound-absorbing member 320. The structure and function of the cover member 310 are the same as those of the cover member 310 according to the above-described embodiment, and therefore, a duplicated description will be omitted below.

[0193]

[0215] In this modification, the sound absorbing member 320 may be formed of a material that is flowable but hardens after a predetermined time has passed, i.e., the sound absorbing member 320 may be made of urethane foam.

[0194]

[0216] In this modified example, the main cover 311 is disposed adjacent to the first reinforcing rib 131. In one embodiment, the main cover 311 can be disposed so as to contact the first reinforcing rib 131.

[0195]

[0217] The main cover 311 is provided with a communication portion 350. The communication portion 350 protrudes outward from the main cover 311 and extends in one extension direction of the main cover 311. In the embodiment shown in FIG. 8, the communication portion 350 protrudes from one side opposite the wall portion 110, i.e., the front side. The communication portion 350 extends in one extension direction of the main cover 311, which in the illustrated embodiment is the left-right direction.

[0196]

[0218] The inner surface of the communication portion 350, i.e., the surface facing the wall portion 110, can be formed as a depression. That is, the inside of the communication portion 350 is formed as a space that is depressed in the surface of the main cover 311 that faces the wall portion 110. Therefore, the communication portion 350 can function as a flow path that extends along the left-right direction of the main cover 311.

[0197]

[0219] The communication portion 350 may communicate with each of the multiple small spaces formed by dividing the filling space 140. That is, each end of the communication portion 350 in its extension direction may communicate with each of the small spaces formed on the outermost sides. In the illustrated embodiment, the left end of the communication portion 350 may communicate with the small space located on the leftmost side. The right end of the communication portion 350 may communicate with the small space located on the rightmost side.

[0198]

[0220] Therefore, in the above embodiment, sound absorbing material 320 injected into one of the plurality of small spaces can flow to other small spaces through communication part 350. Therefore, even if a single communication hole (not shown) is formed in vibration reduction part 300, sound absorbing material 320 injected into one small space can flow to another small space through the communication hole (not shown).

[0199]

[0221] In the illustrated embodiment, a single communication portion 350 is formed. Alternatively, a plurality of communication portions 350 may be formed and disposed spaced apart from each other in the height direction of the main cover 311.

[0200]

[0222] 8(b), the thickness of the main cover 311 can be defined as a first thickness t1, and the protruding length of the communication portion 350 can be defined as a second thickness t2. In other words, it will be understood that the second thickness t2 is the vertical distance between the inner surface of the main cover 311 and the outer end of the communication portion 350.

[0201]

[0223] In the above embodiment, the second thickness t2 may be greater than or equal to the first thickness t1. The difference between the second thickness t2 and the first thickness t1 may be defined as the thickness of the space that connects the plurality of small spaces. As described above, the plurality of small spaces partitioned by the space, i.e., the space formed inside the communication portion 350, may communicate with each other, allowing the sound-absorbing member 320 to flow.

[0202]

[0224] Therefore, the plurality of small spaces formed by dividing the filling space 140 by the plurality of reinforcing ribs 130 can be connected to each other by the communication part 350. As a result, even when the vibration reduction part 300 according to this modified example has a single communication hole (not shown), the sound absorbing material 320 injected into one small space can flow to another small space through the communication hole (not shown).

[0203]

[0225] This can simplify the manufacturing process of the vibration reduction portion 300 and the manufacturing process of joining the vibration reduction portion 300 to the wall portion 110.

[0204]

[0226] 4. Description of vibration reduction unit 400 according to another embodiment of the present invention

[0227] 9 to 13, a transformer 10 according to another embodiment of the present invention includes a vibration reduction unit 400. The vibration reduction unit 400 according to this embodiment is coupled to the housing 100 and the current-carrying unit 200, respectively, and is configured to reduce vibration or noise.

[0205]

[0228] Specifically, the vibration reduction unit 400 is configured to be coupled to the iron core member 210 or the support frame 230 to reduce vibration or noise generated in the current-carrying unit 200. In addition, the vibration reduction unit 400 is configured to be coupled to the wall unit 110 of the housing 100 to minimize the amount of vibration or noise transmitted to the wall unit 110. This can reduce the amount of vibration or noise radiated to the outside of the transformer 10.

[0206]

[0229] The vibration reduction part 400 is coupled to the wall part 110. In this case, the vibration reduction part 400 may be coupled to the wall part 110 in a direction different from the extension direction of the core member 210. In the embodiment shown in FIG. 9, the core member 210 is formed to extend in the left-right direction. As a result, the vibration reduction part 400 may extend in a direction different from the above direction, which in the illustrated embodiment is the front-rear direction.

[0207]

[0230] In the above embodiment, the front end of the vibration reduction part 400 is coupled to the first wall 111 located on the front side, and the rear end of the vibration reduction part 400 is coupled to the fourth wall 114 located on the rear side.

[0208]

[0231] The vibration reduction unit 400 is coupled to the iron core member 210 and the support frame 230 of the current-carrying unit 200. That is, in the embodiment shown in Fig. 10, the vibration reduction unit 400 includes a portion located between the iron core member 210 and the support frame 230 and another portion coupled to the support frame 230.

[0209]

[0232] A plurality of vibration reduction units 400 may be provided. The plurality of vibration reduction units 400 may be spaced apart from one another along the extension direction of the iron core member 210. In the embodiment shown in Fig. 9, a total of six vibration reduction units 400 are provided, including three located on the upper side and spaced apart from one another in the front-to-rear direction, and three located on the lower side and spaced apart from one another in the front-to-rear direction.

[0210]

[0233] The number and arrangement of the vibration reduction units 400 may be changed.

[0211]

[0234] In the illustrated embodiment, the vibration reduction portion 400 includes a core support member 410 , a transmission member 420 , a housing coupling member 430 , and an elastic member 440 .

[0212]

[0235] The core support member 410 is coupled to the core member 210 and the support frame 230, respectively, and is configured to reduce vibration or noise generated in the core member 210. The core support member 410 is located between the core member 210 and the support frame 230.

[0213]

[0236] The core support member 410 may be coupled to the core member 210 and the support frame 230, respectively, and may be provided in any form capable of reducing vibration or noise transmitted from the core member 210 to the support frame 230. In one embodiment, the core support member 410 may be formed from a cork or rubber material.

[0214]

[0237] In the illustrated embodiment, the core support member 410 is arranged to surround part of the outside of the core member 210, i.e., the upper outer periphery of the upper core member 210 and the lower outer periphery of the lower core member 210. Alternatively, the core support member 410 may be arranged to surround the core member 210 in the width direction, or in the front-to-rear direction in the illustrated embodiment.

[0215]

[0238] The core support member 410 is surrounded by the support frame 230. In the embodiment shown in Figures 10 to 13, the core support member 410 is formed so that its front and rear sides are surrounded by the support frame 230.

[0216]

[0239] A plurality of core support members 410 may be provided. The plurality of core support members 410 may be coupled to the core member 210 and the support frame 230 at different positions. In the embodiment shown in Figures 10 to 13, the core support members 410 are located adjacent to the upper and lower sides of the core member 210, respectively.

[0217]

[0240] The core support member 410 is coupled to the transmission member 420 via the support frame 230 .

[0218]

[0241] The transmission member 420 transmits vibrations or noise transmitted from the iron core member 210 to the support frame 230. At this time, the transmission member 420 can absorb a predetermined amount of vibrations or noise, thereby reducing the vibrations or noise transmitted to the housing 100.

[0219]

[0242] The transmission member 420 is coupled to the wall portion 110 and the support frame 230, respectively. The transmission member 420 is continuous between the wall portion 110 and the support frame 230. As will be described later, the wall portion 110 is provided with a housing coupling member 430, and therefore it can be said that the transmission member 420 is coupled to the support frame 230 and the housing coupling member 430, respectively.

[0220]

[0243] The transmission member 420 is formed to extend in the width direction of the core member 210, which in the illustrated embodiment is the front-rear direction. One end of the transmission member 420 in the extension direction is connected to a housing connecting member 430 provided on the wall portion 110. The other end of the transmission member 420 in the extension direction is connected to the support frame 230.

[0221]

[0244] The transmission member 420 may be formed of a rigid body and may transmit vibrations or noise transmitted from the iron core member 210 and the support frame 230 to the wall portion 110 of the housing 100.

[0222]

[0245] A plurality of transmission members 420 may be provided. The plurality of transmission members 420 may be coupled to the support frame 230 and the housing coupling member 430 at different positions from each other. In the illustrated embodiment, the transmission members 420 are positioned adjacent to the upper and lower sides of the iron core member 210, respectively.

[0223]

[0246] The transmission member 420 may be coupled to the single support frame 230 at different positions, i.e., the support frame 230 may be coupled to the transmission member 420 at multiple points.

[0224]

[0247] In the illustrated embodiment, the transmission member 420 includes a first transmission member 421 located on the front side of the support frame 230 and a second transmission member 422 located on the rear side thereof.

[0225]

[0248] The first transmission member 421 connects one side of the support frame 230 and one wall portion 110. In the illustrated embodiment, the first transmission member 421 is coupled to a first coupling member 431 coupled to the front side of the support frame 230 and the first wall 111, respectively.

[0226]

[0249] The first transmission member 421 extends between the front side of the support frame 230 and the first connecting member 431. In the illustrated embodiment, the first transmission member 421 extends in the front-to-rear direction, with its front end connected to the first connecting member 431 and its rear end connected to the front side of the support frame 230.

[0227]

[0250] The second transmission member 422 connects the other side of the support frame 230 to the other wall portion 110. In the illustrated embodiment, the second transmission member 422 is coupled to the rear side of the support frame 230 and a second coupling member 432 coupled to the fourth wall 114, respectively.

[0228]

[0251] The second transmission member 422 extends between the rear side of the support frame 230 and the second coupling member 432. In the illustrated embodiment, the second transmission member 422 extends in the front-to-rear direction, with its front end coupled to the rear side of the support frame 230 and its rear end coupled to the second coupling member 432.

[0229]

[0252] The first transmission member 421 and the second transmission member 422 are arranged to face each other with the current-carrying part 200 interposed therebetween.

[0230]

[0253] The vibration or noise transmitted through the transmission member 420 is transmitted to the housing connecting member 430 .

[0231]

[0254] The housing coupling member 430 is configured to reduce vibrations or noise transmitted through the transmission member 420. The housing coupling member 430 can minimize vibrations or noise transmitted to the housing 100, specifically, to the wall portion 110. This can also reduce vibrations or noise radiated from the wall portion 110 to the outside of the transformer 10.

[0232]

[0255] The housing coupling member 430 is coupled to the housing 100. Specifically, the housing coupling member 430 is coupled to the inner surface of the wall portion 110. The housing coupling member 430 is housed in the housing space 120 of the housing 100 and is not exposed to the outside.

[0233]

[0256] There may be a plurality of housing connecting members 430. The plurality of housing connecting members 430 may be connected to the inner surfaces of different wall portions 110. In the embodiment shown in Figures 10 to 13, the housing connecting members 430 are connected to the first wall 111 located on the front side and the fourth wall 114 located on the rear side, respectively.

[0234]

[0257] A plurality of housing joining members 430 may be arranged spaced apart along other directions in which the iron core member 210 extends. In the embodiment shown in Figures 10 to 13, the housing joining members 430 are arranged spaced apart from each other on the upper and lower sides along the vertical direction.

[0235]

[0258] The housing coupling member 430 disposed on the upper side is coupled to the transmission member 420 disposed on the upper side, and the housing coupling member 430 disposed on the lower side is coupled to the transmission member 420 disposed on the lower side.

[0236]

[0259] The housing coupling member 430 may be made of any material that can reduce vibration or noise transmitted from the transmission member 420. In one embodiment, the housing coupling member 430 may be made of urethane foam, cork, or a rubber material.

[0237]

[0260] The housing coupling member 430 may have any shape that can reduce transmitted vibration or noise when coupled to the wall portion 110 and the transmission member 420. In the illustrated embodiment, the housing coupling member 430 is a polygonal prism including a pair of faces that are coupled to the wall portion 110 and the transmission member 420, respectively, and that are arranged to face each other.

[0238]

[0261] In the illustrated embodiment, the housing coupling member 430 includes a first coupling member 431 and a second coupling member 432 .

[0239]

[0262] The first connecting member 431 is positioned offset to one side based on the current-carrying part 200. In the illustrated embodiment, the first connecting member 431 is positioned offset to the front side. The first connecting member 431 is coupled to the first wall 111 positioned on the front side and the first transmission member 421 positioned offset to the front side.

[0240]

[0263] The second coupling member 432 is positioned offset to the other side with respect to the current-carrying unit 200. The second coupling member 432 is disposed to face the first coupling member 431 across the current-carrying unit 200. In the illustrated embodiment, the second coupling member 432 is positioned offset to the rear side. The second coupling member 432 is coupled to the fourth wall 114, which is positioned on the rear side, and the second transmission member 422, which is positioned offset to the rear side.

[0241]

[0264] Therefore, in the vibration reduction part 400 according to this embodiment, the vibration or noise generated in the current-carrying part 200 can be first reduced by the iron core support member 410, and then transmitted to the housing connecting member 430 via the transmission member 420.

[0242]

[0265] In addition, the transmitted vibration or noise is reduced again by the housing coupling member 430 and then transmitted to the wall portion 110. As a result, the amount of vibration or noise generated in the current-carrying portion 200 that is radiated outside the transformer 10 can be reduced.

[0243]

[0266] 11 shows a modified example of the vibration reduction unit 400 according to this embodiment. In this modified example, the vibration reduction unit 400 further includes an elastic member 440.

[0244]

[0267] In this modification, the support frame 230 and the housing connecting member 430 can be connected by a plurality of members. That is, in this modification, the support frame 230 and the housing connecting member 430 are connected by the transmission member 420 and the elastic member 440.

[0245]

[0268] The structure and function of the core support member 410 and the housing joining member 430 in this modification are the same as those in the above-described embodiment, and therefore, redundant explanations will be omitted below.

[0246]

[0269] The elastic member 440 is located between the support frame 230 and the transmission member 420, or between the transmission member 420 and the housing coupling member 430. In the embodiment shown, the elastic member 440 is located between the transmission member 420 and the housing coupling member 430.

[0247]

[0270] The elastic member 440 extends between the transmission member 420 and the housing connecting member 430. One end of the elastic member 440 in its extension direction can be connected to the transmission member 420, and the other end can be connected to the housing connecting member 430.

[0248]

[0271] The elastic member 440 may be provided in any form that can be deformed into a predetermined shape and reduce applied vibration or noise. That is, the elastic member 440 may be formed to have a predetermined elasticity. In the illustrated embodiment, the elastic member 440 is provided as a coil spring.

[0249]

[0272] The elastic member 440 may be coupled at a plurality of positions to the transmission member 420 and the housing coupling member 430. In the illustrated embodiment, the elastic member 440 is located adjacent to the upper and lower sides of the iron core member 210, respectively.

[0250]

[0273] A plurality of elastic members 440 may be provided. The plurality of elastic members 440 may be configured to support a single support frame 230 in different directions. In the illustrated embodiment, the elastic members 440 include a first elastic member 441 located on the front side and a second elastic member 442 located on the rear side. The first elastic member 441 and the second elastic member 442 are arranged to face each other with the current-carrying part 200 interposed therebetween.

[0251]

[0274] The first elastic member 441 is coupled to the first transmission member 421 and the first coupling member 431 located on the front side. The first elastic member 441 extends between the first transmission member 421 and the first coupling member 431.

[0252]

[0275] One end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the front end, is connected to the first connecting member 431. The other end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the rear end, is connected to the first transmission member 421.

[0253]

[0276] The first elastic member 441 elastically supports the support frame 230 and the first transmission member 421. Vibrations or noise generated in the current-carrying part 200 can be reduced by the first elastic member 441 and transmitted to the first transmission member 421.

[0254]

[0277] In the above embodiment, the first elastic member 441 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the first elastic member 441 can function as a damper in the front-rear direction.

[0255]

[0278] The second elastic member 442 is coupled to the second transmission member 422 and the second coupling member 432 located on the rear side. The second elastic member 442 extends between the second transmission member 422 and the second coupling member 432.

[0256]

[0279] One end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the front end, is coupled to the second transmission member 422. The other end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the rear end, is coupled to the second coupling member 432.

[0257]

[0280] The second elastic member 442 elastically supports the support frame 230 and the second transmission member 422. Vibrations or noise generated in the current-carrying part 200 can be reduced by the second elastic member 442 and transmitted to the second transmission member 422.

[0258]

[0281] In the above embodiment, the second elastic member 442 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the second elastic member 442 can function as a damper in the front-rear direction.

[0259]

[0282] Therefore, in the vibration reduction section 400 of this modified example, vibrations or noise generated in the current-carrying section 200 are first reduced by the iron core support member 410, transmitted through the elastic member 440, reduced again, and transmitted to the housing connecting member 430.

[0260]

[0283] In addition, the transmitted vibration or noise is reduced again by the housing coupling member 430 and then transmitted to the wall portion 110. As a result, the amount of vibration or noise generated in the current-carrying portion 200 that is radiated outside the transformer 10 can be reduced.

[0261]

[0284] 12 shows another modified example of the vibration reduction unit 400 according to this embodiment. In this modified example, the vibration reduction unit 400 further includes an elastic member 440.

[0262]

[0285] In this modified example, the support frame 230 and the housing connecting member 430 may be connected by an elastic member 440. That is, in this modified example, the transmission member 420 is not separately provided, and the support frame 230 and the housing connecting member 430 are connected only by the elastic member 440.

[0263]

[0286] In this modification, the structure and function of the core support member 410 and the housing joining member 430 are the same as those in the above-described embodiment, so that redundant explanation will be omitted below.

[0264]

[0287] In this modification, the elastic member 440 is located between the support frame 230 and the housing connecting member 430. The elastic member 440 extends between the support frame 230 and the housing connecting member 430. One end of the elastic member 440 in its extension direction can be connected to the support frame 230, and the other end can be connected to the housing connecting member 430.

[0265]

[0288] The elastic member 440 may be provided in any form that can be deformed into a predetermined shape and reduce applied vibration or noise. That is, the elastic member 440 may be formed to have a predetermined elasticity. In the illustrated embodiment, the elastic member 440 is provided as a coil spring.

[0266]

[0289] The elastic members 440 may be coupled at a plurality of positions to the support frame 230 and the housing coupling member 430. In the illustrated embodiment, the elastic members 440 are disposed adjacent to the upper and lower sides of the core member 210, respectively.

[0267]

[0290] A plurality of elastic members 440 may be provided. The plurality of elastic members 440 may be configured to support a single support frame 230 in different directions. In the illustrated embodiment, the elastic members 440 include a first elastic member 441 located on the front side and a second elastic member 442 located on the rear side. The first elastic member 441 and the second elastic member 442 are arranged to face each other with the current-carrying part 200 therebetween.

[0268]

[0291] The first elastic member 441 is coupled to the front side of the support frame 230 and the first connecting member 431. The first elastic member 441 extends between the support frame 230 and the first connecting member 431.

[0269]

[0292] One end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the front end, is connected to the first connecting member 431. The other end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the rear end, is connected to the support frame 230.

[0270]

[0293] The first elastic member 441 elastically supports the support frame 230 and the first connecting member 431. Vibrations or noise generated in the current-carrying part 200 can be reduced by the first elastic member 441 and transmitted to the first connecting member 431.

[0271]

[0294] In the above embodiment, the first elastic member 441 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the first elastic member 441 can function as a damper in the front-rear direction.

[0272]

[0295] The second elastic member 442 is coupled to the support frame 230 located on the rear side and the second connecting member 432. The second elastic member 442 extends between the support frame 230 and the second connecting member 432.

[0273]

[0296] One end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the front end, is connected to the support frame 230. The other end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the rear end, is connected to the second connecting member 432.

[0274]

[0297] The second elastic member 442 elastically supports the support frame 230 and the second connecting member 432. Vibrations or noise generated in the current-carrying part 200 can be reduced by the second elastic member 442 and transmitted to the second connecting member 432.

[0275]

[0298] In the above embodiment, the second elastic member 442 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the second elastic member 442 can function as a damper in the front-rear direction.

[0276]

[0299] Therefore, in the vibration reduction part 400 of this modified example, vibrations or noise generated in the current-carrying part 200 can also be primarily reduced by the iron core support member 410, transmitted through the elastic member 440, reduced again, and transmitted to the housing connecting member 430.

[0277]

[0300] In addition, the transmitted vibration or noise is reduced again by the housing coupling member 430 and then transmitted to the wall portion 110. As a result, the amount of vibration or noise generated in the current-carrying portion 200 that is radiated outside the transformer 10 can be reduced.

[0278]

[0301] 13 shows another modified example of the vibration reduction unit 400 according to this embodiment. In this modified example, the vibration reduction unit 400 further includes an elastic member 440.

[0279]

[0302] In this modified example, the support frame 230 and the wall portion 110 can be connected by an elastic member 440. That is, in this modified example, the transmission member 420 and the housing connecting member 430 are not separately provided, and the support frame 230 and the wall portion 110 are connected only by the elastic member 440.

[0280]

[0303] In this modification, the structure and function of the core support member 410 and the housing joining member 430 are the same as those in the above-described embodiment, so that redundant explanation will be omitted below.

[0281]

[0304] In this modification, the elastic member 440 is located between the support frame 230 and the wall portion 110. The elastic member 440 extends between the support frame 230 and the wall portion 110. One end of the elastic member 440 in its extension direction can be coupled to the support frame 230, and the other end can be coupled to the wall portion 110.

[0282]

[0305] The elastic member 440 may be provided in any form that can be deformed into a predetermined shape and reduce applied vibration or noise. That is, the elastic member 440 may be formed to have a predetermined elasticity. In the illustrated embodiment, the elastic member 440 is provided as a coil spring.

[0283]

[0306] The elastic member 440 may be coupled at a plurality of positions to the support frame 230 and the wall portion 110. In the illustrated embodiment, the elastic member 440 is positioned adjacent to the upper and lower sides of the core member 210, respectively.

[0284]

[0307] A plurality of elastic members 440 may be provided. The plurality of elastic members 440 may be configured to support a single support frame 230 in different directions. In the illustrated embodiment, the elastic members 440 include a first elastic member 441 located on the front side and a second elastic member 442 located on the rear side. The first elastic member 441 and the second elastic member 442 are disposed opposite each other with the current-carrying part 200 interposed therebetween.

[0285]

[0308] The first elastic member 441 is coupled to the first wall 111 located on the front side and the first connecting member 431. The first elastic member 441 extends between the first wall 111 and the first connecting member 431.

[0286]

[0309] One end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the front end, is connected to the first wall 111. The other end of the first elastic member 441 in the extension direction, which in the illustrated embodiment is the rear end, is connected to the support frame 230.

[0287]

[0310] The first elastic member 441 elastically supports the support frame 230 and the first wall 111. Vibrations or noise generated in the current-carrying part 200 can be reduced by the first elastic member 441 and transmitted to the first wall 111.

[0288]

[0311] In the above embodiment, the first elastic member 441 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the first elastic member 441 can function as a damper in the front-rear direction.

[0289]

[0312] The second elastic member 442 is coupled to the support frame 230 and the fourth wall 114, which are located on the rear side. The second elastic member 442 extends between the support frame 230 and the fourth wall 114.

[0290]

[0313] One end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the front end, is coupled to the support frame 230. The other end of the second elastic member 442 in the extension direction, which in the illustrated embodiment is the rear end, is coupled to the fourth wall 114.

[0291]

[0314] The second elastic member 442 elastically supports the support frame 230 and the fourth wall 114. Vibrations or noise generated in the current-carrying part 200 can be reduced by the second elastic member 442 and transmitted to the fourth wall 114.

[0292]

[0315] In the above embodiment, the second elastic member 442 can be deformed in its extension direction, i.e., in the left-right direction, to reduce vibration or noise, i.e., the second elastic member 442 can function as a damper in the front-rear direction.

[0293]

[0316] Therefore, in the vibration reduction unit 400 according to this modification, vibration or noise generated in the current-carrying unit 200 is first reduced by the core support member 410, transmitted via the elastic member 440, reduced again, and transmitted to the wall unit 110. This reduces the amount of vibration or noise generated in the current-carrying unit 200 that is radiated outside the transformer 10.

[0294]

[0317] 5. Description of vibration reduction unit 500 according to another embodiment of the present invention

[0318] 14 to 20, a transformer 10 according to still another embodiment of the present invention includes a vibration reduction unit 500. The vibration reduction unit 500 according to this embodiment is coupled to the housing 100 and configured to reduce transmitted vibrations or noise.

[0295]

[0319] Specifically, the vibration reduction unit 500 is coupled to the wall unit 110 of the housing 100 and is configured to reduce vibrations or noise generated in the current-carrying unit 200 and transmitted to the housing 100 .

[0296]

[0320] The vibration reduction part 500 is accommodated in the accommodation space 120 and coupled to the inner surface of the wall part 110. A plurality of vibration reduction parts 500 may be provided on one or more of the first to fifth walls 111, 112, 113, 114, and 115 surrounding the accommodation space 120. The vibration reduction part 500 may also be provided on a lower wall not shown in the figure.

[0297]

[0321] In the embodiment shown in FIG. 14, the vibration reduction portion 500 is coupled to the inner surface of the second wall 112 located on the left side.

[0298]

[0322] The vibration reduction unit 500 does not directly contact the current-carrying unit 200. That is, the vibration reduction unit 500 is configured to reduce vibrations or noise transmitted through a fluid, for example, air, in the accommodation space 120. In one embodiment, the vibration reduction unit 500 can reduce vibrations or noise generated using a resonance phenomenon. In the embodiment, the vibration reduction unit 500 can be defined as a resonator.

[0299]

[0323] In the illustrated embodiment, the vibration reduction section 500 includes a first frame 510 , a second frame 520 , a pipe member 530 , a through hole 540 , a resonance space 550 , and a partition wall 560 .

[0300]

[0324] The first frame 510 forms part of the outer shape of the vibration reduction unit 500. The first frame 510 is coupled to the second frame 520 to form the outer shape of the vibration reduction unit 500. The first frame 510 can be detachably coupled to the second frame 520 in the height direction of the vibration reduction unit 500, which in the illustrated embodiment is the up-down direction.

[0301]

[0325] In the illustrated embodiment, the first frame 510 is positioned above the second frame 520 and is formed to cover the resonance space 550 formed inside the second frame 520. Thus, the first frame 510 can be defined as a cover for the vibration reduction unit 500.

[0302]

[0326] The first frame 510 is a portion of the vibration reduction unit 500 that is exposed to the accommodation space 120. The first frame 510 is a portion of the vibration reduction unit 500 that faces the accommodation space 120. In other words, the first frame 510 is positioned so as to face the current-carrying unit 200. The first frame 510 is disposed opposite the wall unit 110 with the second frame 520 interposed therebetween.

[0303]

[0327] A pipe member 530 is connected to penetrate the interior of the first frame 510. The pipe member 530 can extend in the thickness direction of the first frame 510 inside the first frame 510, or in the vertical direction in the embodiment shown in FIG.

[0304]

[0328] A through hole 540 is formed through the inside of the first frame 510. The through hole 540 is located adjacent to the pipe member 530 and configured to reduce vibration or noise transmitted along with the pipe member 530.

[0305]

[0329] The first frame 510 can be divided into multiple regions. In the embodiment shown in Fig. 16, the first frame 510 can be formed by multiple modules M. In the embodiment, the multiple modules M are provided in three in the front-rear direction and three in the left-right direction, so that a total of nine modules M can form the first frame 510.

[0306]

[0330] The first frame 510 may have any shape that allows the pipe member 530 to penetrate and be connected thereto, through holes 540 formed therethrough, and that allows connection to the second frame 520. In the illustrated embodiment, the first frame 510 is formed in the shape of a plate having a rectangular cross section and a thickness in the vertical direction.

[0307]

[0331] In the illustrated embodiment, the first frame 510 includes a first surface 511 and a second surface 512 .

[0308]

[0332] The first surface 511 forms one surface of the first frame 510 facing the current-carrying part 200, that is, the upper surface in the illustrated embodiment. The first surface 511 is a portion of the first frame 510 exposed to the accommodation space 120.

[0309]

[0333] A second surface 512 is formed so as to face the first surface 511 .

[0310]

[0334] The second surface 512 is the other surface of the first frame 510 that faces away from the current-carrying part 200, and in the illustrated embodiment, forms the lower surface. The second surface 512 is the surface of the first frame 510 that is not exposed to the accommodating space 120. In other words, the second surface 512 can be defined as the surface of the first frame 510 that faces the second frame 520.

[0311]

[0335] The first surface 511 and the second surface 512 may be disposed at a predetermined distance apart. The length of the through hole 540 may be determined according to the distance between the first surface 511 and the second surface 512. As will be described later, the frequency of vibration or noise that can be canceled out through a resonance phenomenon may be adjusted according to the length of the through hole 540.

[0312]

[0336] That is, the thickness of the first frame 510 can be adjusted to adjust the frequency of vibration or noise that can be canceled by the through-holes 540. This will be described in detail later.

[0313]

[0337] The second frame 520 forms another part of the outer shape of the vibration reduction unit 500. The second frame 520 is coupled to the first frame 510 to form the outer shape of the vibration reduction unit 500. The second frame 520 can be detachably coupled to the first frame 510 in the height direction of the vibration reduction unit 500, in the vertical direction in the illustrated embodiment.

[0314]

[0338] In the embodiment shown, the second frame 520 is located below the first frame 510. The second frame 520 may thereby be defined as the body of the vibration reduction part 500.

[0315]

[0339] The second frame 520 is a portion where the vibration reduction unit 500 is connected to the wall unit 110. The second frame 520 is a portion of the vibration reduction unit 500 facing the wall unit 110. In other words, the second frame 520 is positioned opposite the current-carrying unit 200. The second frame 520 is disposed so as to face the current-carrying unit 200 across the first frame 510.

[0316]

[0340] A plurality of resonance spaces 550 for reducing transmitted vibration or noise and partition walls 560 for partitioning the plurality of resonance spaces 550 are arranged inside the second frame 520. The partitioned plurality of resonance spaces 550 may overlap with the plurality of modules M forming the first frame 510 in the stacking direction, which in the illustrated embodiment is the vertical direction. That is, a single module M may be arranged to overlap a single resonance space 550.

[0317]

[0341] The second frame 520 may have any shape capable of accommodating the resonant space 550 and the partition wall 560 therein and reducing transmitted vibration or noise. In the illustrated embodiment, the second frame 520 is a rectangular prism having a rectangular cross section and a thickness in the vertical direction. The shape of the second frame 520 may be changed depending on the shape of the first frame 510.

[0318]

[0342] In the illustrated embodiment, the second frame 520 includes a frame perimeter 521 , a frame face 522 , and fastening holes 523 .

[0319]

[0343] The frame periphery 521 forms the periphery of the second frame 520. The frame periphery 521 surrounds the plurality of resonance spaces 550 from the outside. The frame periphery 521 may be formed in a shape corresponding to the second frame 520. In the illustrated embodiment, the second frame 520 is a quadrangular prism, and therefore the frame periphery 521 may be formed to have a quadrangular cross section.

[0320]

[0344] The frame periphery 521 may be aligned with the periphery of the first frame 510. That is, the periphery of the first frame 510 and the frame periphery 521 may be arranged on the same plane along the periphery.

[0321]

[0345] The frame outer periphery 521 is continuous with the frame surface 522 .

[0322]

[0346] The frame surface 522 forms one surface of the second frame 520, which in the illustrated embodiment is the lower surface. The frame surface 522 is disposed to face the first frame 510 across the resonance space 550. The frame surface 522 surrounds the resonance space 550 from the other direction, which in the illustrated embodiment is the lower side.

[0323]

[0347] The frame surface 522 is a portion where the second frame 520 is coupled to the housing 100. That is, the frame surface 522 is coupled to the wall portion 110. For this purpose, the outer surface of the frame surface 522 may be formed in the same shape as the inner surface of the wall portion 110.

[0324]

[0348] A fastening hole 523 is formed through the frame surface 522 .

[0325]

[0349] The fastening holes 523 are spaces through which fastening members (not shown) for connecting the second frame 520 to the wall body part 110 are passed. The fastening holes 523 are formed in the frame surface 522 so as to penetrate therethrough.

[0326]

[0350] A plurality of fastening holes 523 may be formed. The plurality of fastening holes 523 may be arranged at different positions on the frame surface 522. In the embodiment shown in Fig. 17(b), four fastening holes 523 are provided. The four fastening holes 523 are located adjacent to each corner of the frame surface 522 having a rectangular cross section.

[0327]

[0351] At this time, the four fastening holes 523 are located inside the frame outer periphery 521, and fastening members (not shown) coupled to the fastening holes 523 are not exposed to the outside. Therefore, the disturbance of vibration or noise transmitted to the vibration reduction unit 500 is minimized, and the vibration reduction unit 500 can effectively reduce vibration or noise of a preset frequency.

[0328]

[0352] The fastening holes 523 may be aligned with a plurality of through holes (not shown) formed in the wall portion 110. In other words, the fastening holes 523 and the through holes (not shown) may be formed to have the same central axis.

[0329]

[0353] The pipe member 530 substantially performs the role of reducing vibration or noise of the vibration reduction unit 500. Vibration or noise generated in the current-carrying unit 200 passes through the inside of the pipe member 530 and advances to the resonance space 550, where it can be reduced by a resonance phenomenon.

[0330]

[0354] The pipe member 530 is coupled to the first frame 510. Specifically, the pipe member 530 may be coupled to the inside of the first frame 510 in a penetrating manner.

[0331]

[0355] The pipe member 530 may extend a predetermined length. The extension length of the pipe member 530 may be greater than the thickness of the first frame 510, i.e., the distance between the first surface 511 and the second surface 512. Therefore, at least one of the ends of the pipe member 530 in the extension direction may protrude in the thickness direction of the first frame 510.

[0332]

[0356] In the illustrated embodiment, the lower end of the pipe member 530 protrudes in the thickness direction of the first frame 510. The end of the pipe member 530 is housed in the resonance space 550.

[0333]

[0357] Alternatively, the upper end of the pipe member 530 may protrude in the thickness direction of the first frame 510. In the above embodiment, the end of the pipe member 530 may be located in the receiving space 120.

[0334]

[0358] As another alternative, both the upper end and the lower end of the pipe member 530 may protrude in the thickness direction of the first frame 510. It will be understood that in the above embodiment, the upper end of the pipe member 530 is accommodated in the accommodation space 120, and the lower end is accommodated in the resonance space 550.

[0335]

[0359] A plurality of pipe members 530 may be provided. The plurality of pipe members 530 may be arranged in a plurality of modules M that define the first frame 510. In the illustrated embodiment, nine pipe members 530 are provided, and are arranged in nine modules M, respectively.

[0336]

[0360] At this time, as described above, the multiple modules M are arranged to respectively cover the multiple resonance spaces 550. Therefore, in an embodiment in which the ends of the pipe members 530 protrude downward, each end of the multiple pipe members 530 can be located in the multiple resonance spaces 550, respectively.

[0337]

[0361] The pipe member 530 may be located at any position inside the module M. In the embodiment shown, the pipe member 530 is located at the center of the module M. In said embodiment, the center of the pipe member 530 and the center of the module M may be located on the same axis.

[0338]

[0362] A hollow is formed inside the pipe member 530. The hollow communicates the receiving space 120 with the resonance space 550 and can function as a passage through which vibration or noise can travel.

[0339]

[0363] The pipe member 530 is formed to have a predetermined cross section. In the embodiment shown, the pipe member 530 has a circular cross section, but is formed to have a ring-shaped cross section with a hollow formed therethrough.

[0340]

[0364] The extension length of the pipe member 530 and the cross-sectional area of ​​the hollow can be used as factors for the resonance frequency generated by the vibration reduction unit 500. This will be described in detail later.

[0341]

[0365] The through holes 540 substantially function to reduce vibration or noise generated by the vibration reduction unit 500. Vibration or noise generated in the current-carrying unit 200 passes through the through holes 540 and advances to the resonance space 550, where it can be reduced by a resonance phenomenon.

[0342]

[0366] The through-hole 540 is formed in the first frame 510. Specifically, the through-hole 540 is formed to penetrate the inside of the first frame 510 in the thickness direction of the first frame 510. In the illustrated embodiment, the through-hole 540 is formed to penetrate in the up-down direction.

[0343]

[0367] The extension length of the through hole 540 can be determined depending on the thickness of the first frame 510. In other words, the through hole 540 can extend as far as the distance between the first surface 511 and the second surface 512.

[0344]

[0368] A plurality of through holes 540 may be formed. The plurality of through holes 540 may be arranged in each of the plurality of modules M that define the first frame 510. In one embodiment, the plurality of through holes 540 may be arranged to surround the pipe member 530 from the radial outside.

[0345]

[0369] 15 to 18, eight through holes 540 are formed in each module M, and are arranged so as to surround the pipe member 530 arranged in the center from eight directions. In the embodiment, a total of 72 through holes 540 are provided.

[0346]

[0370] At this time, as described above, the multiple modules M are arranged so as to respectively cover the multiple resonance spaces 550. Therefore, the eight through holes 540 formed in any one module M are mutually connected to the same resonance space 550. Furthermore, the through holes 540 formed in each of the different modules M are mutually connected to each of the different resonance spaces 550.

[0347]

[0371] The number of through holes 540 may be changed. In the embodiment shown in Fig. 19, the through holes 540 formed in each module M are provided in two pairs arranged to face each other along the diagonal direction. In the embodiment, four through holes 540 are formed in each module M.

[0348]

[0372] The through-hole 540 is formed to have a predetermined cross-section. In the illustrated embodiment, the through-hole 540 has a circular cross-section and is hollow and extends in the thickness direction of the first frame 510.

[0349]

[0373] The extension length and cross-sectional area of ​​the through-hole 540 can be used as factors in the resonant frequency generated by the vibration reduction unit 500. This will be described in detail later.

[0350]

[0374] The resonance space 550 is a space where vibrations or noises propagating through the pipe member 530 or the through hole 540 are canceled out. The vibrations or noises propagating through the resonance space 550 can be reduced by a resonance phenomenon. As a result, the magnitude of the vibrations or noises radiated to the outside of the housing 100 coupled with the vibration reduction unit 500 can also be reduced.

[0351]

[0375] The resonance space 550 is a space formed inside the second frame 520. The resonance space 550 is surrounded by the first frame 510, the frame periphery 521, and the frame surface 522. In the illustrated embodiment, the horizontal periphery of the resonance space 550 is surrounded by the frame periphery 521. The lower side of the resonance space 550 is surrounded by the frame surface 522, and the upper side of the resonance space 550 is surrounded by the first frame 510.

[0352]

[0376] The resonance space 550 communicates with the accommodation space 120. Specifically, the resonance space 550 communicates with the accommodation space 120 through the pipe member 530 and the through hole 540. Vibrations or noise generated in the current-carrying part 200 may travel to the resonance space 550 through the pipe member 530 or the through hole 540.

[0353]

[0377] The resonance space 550 may be formed to have a predetermined volume. The volume of the resonance space 550, together with the shapes of the pipe member 530 and the through hole 540, is used as a factor for determining the resonance frequency to be formed. This will be described in detail later.

[0354]

[0378] The resonance space 550 may be divided into a plurality of small spaces. The divided small spaces may be respectively connected to the pipe members 530 and the through holes 540 provided in each module M. The division may be achieved by a plurality of partition walls 560.

[0355]

[0379] In the illustrated embodiment, the resonance space 550 is divided into nine small spaces, three in the front-rear direction and three in the left-right direction. The nine small spaces can be covered by nine modules M, respectively.

[0356]

[0380] In other words, the resonant space 550 may be a space partitioned into a plurality of spaces partitioned by partition walls 560. That is, each of the plurality of partitioned small spaces can be defined as a resonant space 55. When following the above definition, it will be understood that nine resonant spaces 550 are formed in the illustrated embodiment.

[0357]

[0381] The resonant space 550 may have any shape that can reduce the vibration or noise that is generated. In the illustrated embodiment, the resonant space 550 is a rectangular prism-shaped space having a rectangular cross section and a certain height in the vertical direction. The shape of the resonant space 550 may be changed depending on the shapes of the second frame 520 and the partition wall 560.

[0358]

[0382] The partitions 560 divide the resonance space 550 into a plurality of small spaces.

[0359]

[0383] The partition 560 is located in the resonance space 550. The partition 560 is formed to have a predetermined height. In one embodiment, the upper end of the partition 560 may be disposed on the same plane as the upper end of the frame periphery 521. In this embodiment, when the first frame 510 and the second frame 520 are coupled together, the partitioned small spaces may be blocked from communicating with each other.

[0360]

[0384] A plurality of partitions 560 may be provided. The plurality of partitions 560 may be spaced apart from one another and extend in one direction or another. In the illustrated embodiment, a total of four partitions 560 are provided, including a pair of partitions 560 extending in the front-to-rear direction and spaced apart from one another, and another pair of partitions 560 extending in the left-to-right direction and spaced apart from one another.

[0361]

[0385] In this case, the pair of partition walls 560 and the other pair of partition walls 560 may intersect at a predetermined angle. In one embodiment, the predetermined angle may be a right angle.

[0362]

[0386] The shape of the resonance space 550 or each partitioned space communicating with the pipe member 530 and the through hole 540 provided in each module M can be changed by the plurality of partition walls 560. This allows the resonance frequency generated by the vibration reduction unit 500 to be adjusted.

[0363]

[0387] 20 shows a modified example of the vibration reduction unit 500 according to this embodiment. In the modified example shown, the vibration reduction unit 500 is provided with a plurality of modules M that are physically separated from one another. Each module M may be provided with a single pipe member 530 and a plurality of through holes 540.

[0364]

[0388] In the above-described modified example, the number of modules M coupled to the housing 100 can be adjusted according to the frequency of the vibration or noise generated in the current-carrying unit 200. This can more effectively reduce the generated vibration or noise.

[0365]

[0389] On the other hand, the resonance frequency according to the shapes of the pipe member 530 and the resonance space 550 can be derived by the following [Equation 1].

[0366]

[0390]

number

[0367]

[0391] In the above formula, f1 is the resonance frequency, v is the velocity of vibration or noise, A1 is the cross-sectional area of ​​the hollow formed inside the pipe member 530, V1 is the volume of the resonance space 550, and l1 is the extension length of the pipe member 530.

[0368]

[0392] Furthermore, the resonance frequency according to the shapes of the through hole 540 and the resonance space 550 can be derived by the following [Equation 2].

[0369]

[0393]

number

[0370]

[0394] In the above formula, f2 is the resonance frequency, v is the velocity of vibration or noise, A2 is the cross-sectional area of ​​the through hole 540, V2 is the volume of the resonance space 550, and l2 is the extension length of the pipe member 530.

[0371]

[0395] In the above [Equation 1] and [Equation 2], the velocity of vibration or noise, v, is a constant. Therefore, it will be understood that the resonant frequencies, f1 and f2, can be adjusted by adjusting A1, A2, V1, V2, L1, and L2.

[0372]

[0396] Furthermore, by appropriately combining f1 and f2, vibrations or noises of various frequencies can be reduced, or vibrations or noises of a specific frequency can be reduced in a focused manner.

[0373]

[0397] Therefore, the vibration reduction unit 500 according to this embodiment can reduce vibrations or noises of various frequencies by changing the shapes of the pipe member 530, the through hole 540, and the resonance space 550. As a result, vibrations or noises radiated to the outside through the housing 100 coupled with the vibration reduction unit 500 can also be reduced.

[0374]

[0398] In one embodiment, the above-described pipe member 530, through hole 540, and resonance space 550 may be formed to have different shapes. For example, the pipe member 530, through hole 540, and resonance space 550 may be formed to have different shapes for each module M.

[0375]

[0399] In the above embodiment, the plurality of modules M constituting the vibration reduction unit 500 are configured to be able to cancel out different types of vibrations or noises from each other. Therefore, even if vibrations or noises of various frequencies are generated in the current-carrying unit 200, they can be reduced by the vibration reduction unit 500 and then radiated to the outside.

[0376]

[0400] The vibration reduction units 300, 400, and 500 according to the above-described embodiments of the present invention may be provided in one or more configurations because the vibration reduction units 300, 400, and 500 according to the respective embodiments are coupled to the housing 100 or the current-carrying unit 200 at different positions.

[0377]

[0401] It will be understood that in an embodiment in which all of the vibration reduction units 300, 400, and 500 are provided, the vibration or noise generated in the current-carrying unit 200 can be reduced most effectively.

[0378]

[0402] Although embodiments of the present invention have been described, the concept of the present invention is not limited to the embodiments presented in this specification, and a person skilled in the art who understands the concept of the present invention can easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same concept, which would also be considered to be within the scope of the concept of the present invention. [Explanation of symbols]

[0379]

[0403] 10: Transformer 100: Housing

[0404] 110: Wall part 111: First wall

[0405] 112: 2nd wall 113: 3rd wall

[0406] 114: 4th wall 115: 5th wall

[0407] 120: Storage space 130: Reinforcement rib

[0408] 131: First reinforcing rib 132: Second reinforcing rib

[0409] 140: Filling space 200: Conducting part

[0410] 210: Iron core member 220: Winding member

[0411] 230: Support frame 300: Vibration reduction part

[0412] 310: Cover member 311: Main cover

[0413] 312: Sub-cover 320: Sound absorbing material

[0414] 330: Communication hole 340: Plug member

[0415] 350: Communication section 400: Vibration reduction section

[0416] 410: Iron core support member 420: Transmission member

[0417] 421: First transmission member 422: Second transmission member

[0418] 430: Housing connecting member 431: First connecting member

[0419] 432: Second connecting member 440: Elastic member

[0420] 441: First elastic member 442: Second elastic member

[0421] 500: Vibration reduction unit 510: First frame

[0422] 511: 1st side 512: 2nd side

[0423] 520: Second frame 521: Frame periphery

[0424] 522: Frame surface 523: Fastening hole

[0425] 530: Pipe member 540: Through hole

[0426] 550: Resonance space 560: Partition wall

[0427] d1: 1st distance d2: 2nd distance

[0428] d3: Third distance t1: First thickness

[0429] t2: Second thickness M: Module

Claims

1. a sound absorbing member that is accommodated in a filled space formed in the housing and configured to absorb vibrations or noise generated inside the housing; a cover member coupled to the housing; The filling space is formed between a plurality of reinforcing ribs provided in the housing and extending in one direction, the cover member is coupled to and covers from outside the reinforcing rib, the filling space, and the sound absorbing member accommodated in the filling space; The cover member is a main cover having a plate shape and coupled to the reinforcing rib along its thickness direction; a sub-cover coupled to the main cover and covering the filling space along an extension direction of the reinforcing rib; a communication portion formed as a recess on one surface of the main cover facing the reinforcing rib, the communication portion extending in a direction in which the reinforcing ribs are spaced apart;

2. The cover member is a main cover provided in a plate shape and covering the reinforcing rib from a thickness direction; The vibration reduction part according to claim 1 , further comprising: a sub-cover coupled to the main cover and covering the filling space along an extension direction of the reinforcing rib.

3. The vibration reduction unit according to claim 2 , wherein the main cover and the sub-cover seal the filling space.

4. The vibration reduction unit according to claim 1 , wherein the sound absorbing member is made of a material that hardens after a predetermined time has passed.

5. The vibration reduction part according to claim 1 , wherein the sound absorbing member is made of urethane foam, which is injected and filled into the filling space.

6. a communication hole formed through the sub-cover to communicate the filling space with the outside; The vibration reducer according to claim 2 , further comprising: a plug member connected to the communication hole to seal the communication hole.

7. A plurality of the sub-covers are provided and arranged to cover the plurality of filling spaces, respectively; The vibration reducer according to claim 6 , wherein the communication holes are formed in each of the plurality of sub-covers.

8. The cover member is a main cover having a plate shape and coupled to the housing while being spaced apart from the reinforcing rib along a thickness direction of the main cover; The vibration reduction part according to claim 1 , further comprising: a sub-cover coupled to the main cover and covering the filling space along an extension direction of the reinforcing rib.

9. a plurality of filling spaces are formed, and the plurality of filling spaces are respectively connected to spaces formed by separating the main cover and the reinforcing rib; The vibration reduction part according to claim 8 , wherein the sound absorbing material injected into one of the plurality of filling spaces can flow into the other filling spaces.

10. a plurality of filling spaces are formed, and the plurality of filling spaces are each in communication with the communication portion; The vibration reduction part according to claim 1 , wherein the sound absorbing material injected into one of the plurality of filling spaces can flow into the other filling spaces.

11. a current-carrying unit that is electrically connected to an external power source and a load, transforms power transmitted from the power source, and supplies the transformed power to the load; a housing including an accommodation space that accommodates the current-carrying portion and a wall portion that surrounds the accommodation space; a vibration reduction unit coupled to the housing and configured to reduce vibration or noise generated in the current-carrying unit; The vibration reduction unit is a main cover disposed at a predetermined distance from the wall portion and coupled to the wall portion; a sound absorbing member that is filled in a space formed by the main cover and the wall portion and reduces the noise or vibration, The vibration reduction unit is a communication portion recessed outward from one surface of the main cover facing the wall portion, the communication portion extending in a direction in which the plurality of reinforcing ribs are spaced apart; The communication portion communicates with each of the plurality of filled spaces, and the sound absorbing material flowing into one of the plurality of filled spaces can flow into another of the plurality of filled spaces.

12. The housing includes: the plurality of reinforcing ribs coupled to the wall portion, protruding toward the main cover, extending in one direction, and spaced apart from each other; a plurality of the filling spaces formed between the plurality of reinforcing ribs and partially covered by the main cover, The transformer according to claim 11 , wherein the sound absorbing member is housed in each of the plurality of filling spaces.

13. The vibration reduction unit is a sub-cover coupled to the main cover to cover other portions of the plurality of filling spaces; a communication hole formed through the sub-cover to communicate the filling space with the storage space; The transformer according to claim 12 , further comprising: a plug member connected to the communication hole to seal the communication hole.

14. The main cover is disposed apart from the reinforcing rib, and a predetermined space is formed between the main cover and the reinforcing rib; 13. The transformer of claim 12, wherein the predetermined space is in communication with each of the plurality of filling spaces, and the sound absorbing material flowing into one of the plurality of filling spaces can flow into another of the plurality of filling spaces.

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