Sealing device for electric apparatus, and electrical apparatus

Abstract

To provide a sealing device for an electric apparatus that eliminates the need for specialized skill for sealing work, and facilitates redoing after sealing.SOLUTION: A sealing device (10) comprises: a first connector (20) which has a communication hole (21) communicating the inside and outside of a container (2); and a second connector (30) which has an insertion part (32) inserted into the communication hole and a path hole (31) passing inside the insertion part to be open to an outer peripheral surface of the insertion part, and is connected detachably to the first connector with the insertion part inserted into the communication hole. The communication hole (21) has an insertion hole part (21A) into which the insertion part is inserted and a path hole part (21B) open in a bottom surface (21Aa) of the insertion hole part, and is configured to close the path hole part by bringing a container-side part into contact with the insertion hole part from the path hole of the insertion part.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a sealing device for an electric device and an electric device.

Background Art

[0002] In electric devices such as oil-filled capacitors and transformers, an insulating medium such as insulating oil or insulating gas is filled in a container together with electric elements. The container is sealed by a sealing device attached to the container. The sealing device is connected to an introduction pipe for introducing the insulating medium into the container. After filling the insulating medium into the container, the connection with the introduction pipe is released to seal the container.

[0003] As such a sealing device, there is known a sealing device including a base fixed to a container and having a communication hole communicating between the inside and outside of the container, and a pipe having one end detachably and closely attached to the base and the other end compression-bonded and cut (for example, cited reference 1).

[0004] In such a sealing device, the end face of the compression-bonded and cut pipe is covered with solder. This is to maintain the sealed state even when the pressure inside the container rises. The insulating medium expands and contracts due to temperature changes. When the pressure inside the container increases due to expansion, pressure is applied to the compression-bonded and cut portion, and there is a risk that the compression bond will come loose.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, in the prior art as described above, operations such as crimping and cutting a pipe and then covering the crimped and cut end face with solder are required. Such operations require a high level of skill and specialized skills. In addition, since the pipe cannot be returned to its original state when it is crimped, there is also a problem that it is difficult to do it again.

[0007] One aspect of the present invention aims to realize a sealing device for an electric device or the like that does not require specialized skills for the sealing operation and can be easily redone after sealing.

Means for Solving the Problems

[0008] In order to solve the above problems, a sealing device for an electric device according to one aspect of the present invention has a communication hole that communicates between the inside and outside of a container, a first connector fixed to the wall of the container, an insertion part inserted into the communication hole, and a path hole that passes through the inside of the insertion part and opens to the outer peripheral surface of the insertion part. The sealing device is provided with a second connector that is detachably connected to the first connector in a state where the insertion part is inserted into the communication hole. The communication hole has an insertion hole part into which the insertion part is inserted and a passage hole part that opens to the bottom surface of the insertion hole part. The passage hole part can be closed by bringing a portion of the insertion part on the container side from the path hole into close contact with the insertion hole part.

[0009] According to the above configuration, by inserting the second connector into the first connector and making it in a shallow insertion state, a path that connects the communication hole and the path hole on the second connector side and leads to the inside of the container can be secured. Then, by deeply inserting the second connector into the first connector and bringing a portion of the insertion part on the container side from the path hole into close contact with the insertion hole part, the passage hole part can be closed and the container can be sealed. Thereby, specialized skills are not required for the sealing operation, and it is possible to easily redo it after sealing.

[0010] In the sealing device for an electric device according to one aspect of the present invention, a screw part for screw-connecting the second connector to the first connector may be provided on the inner peripheral surface of the communication hole and the outer peripheral surface of the insertion part.

[0011] According to the above configuration, the insertion depth of the second connector with respect to the first connector and the connection between the first connector and the second connector can be adjusted by rotating the second connector. Therefore, when inserting the second connector into the first connector and filling the container with insulating oil or the like, a screw connection with a shallow insertion depth can be used, and after filling, the container can be sealed by tightening until it stops rotating. Also, by rotating the second connector to loosen the tightening, it is possible to easily redo the sealing work.

[0012] In the sealing device for an electric device according to one aspect of the present invention, the portion where the insertion part in the insertion hole part is in close contact is an inclined surface that is inclined in a funnel shape toward the passage hole part, and the portion where the insertion part in the insertion part is in close contact with the insertion hole part may be an inclined surface part having an inclination corresponding to the inclined surface, or a curved surface part that protrudes toward the inclined surface.

[0013] According to the above configuration, it is possible to block the passage hole part without requiring high machining accuracy such as rubbing at the portion where the insertion part in the insertion hole part is in close contact and the portion where the insertion part in the insertion part is in close contact with the insertion hole part.

[0014] In the sealing device for an electric device according to one aspect of the present invention, the second connector has a non-insertion part that protrudes from the communication hole while the insertion part is inserted into the communication hole, and the path hole passes through the inside. The non-insertion part may have a flange part that faces the opening surface of the communication hole in the first connector.

[0015] According to the above configuration, a spacer can be arranged between the first connector and the flange part of the second connector. By arranging the spacer, it is possible to easily set the distance of the gap between the portion on the container side and the insertion hole part from the path hole of the insertion part, which closely closes the passage hole part, to a certain distance.

[0016] In the sealing device for an electrical device according to one aspect of the present invention, the portion where the insertion hole portion is formed in the first connector and the insertion portion may be made of different materials, and one may be softer than the other.

[0017] According to the above configuration, the side made of the softer material deforms following the side made of the harder material. As a result, a wider area of close contact can be secured, and the container can be sealed more reliably.

[0018] In the sealing device for an electrical device according to one aspect of the present invention, the first connector has a protruding portion that discharges into the container while being fixed to the container and has a passage hole portion formed inside. A notch may be formed at the tip of the protruding portion.

[0019] According to the above configuration, even when floating matter adheres to the tip of the protruding portion, a path can be secured by the notch. Moreover, since it is a notch, compared with a configuration in which an opening is provided in the outer peripheral wall of the protruding portion to secure a path, the protruding dimension of the protruding portion can be shortened, and thus the size of the container can be reduced.

[0020] An electrical device according to one aspect of the present invention includes the sealing device for an electrical device described in any of the above.

Effects of the Invention

[0021] According to one aspect of the present invention, it is possible to realize a sealing device for an electrical device that does not require specialized skills for the sealing operation and can easily re-do the sealing after sealing.

Brief Description of the Drawings

[0022]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0023] 〔Embodiment 1〕 Hereinafter, an embodiment of the present invention will be described in detail. The sealing device of the electrical equipment in this embodiment is used for electrical equipment such as an oil-filled capacitor, a transformer, and a ballast, which have a configuration in which an insulating medium such as insulating oil or insulating gas is filled together with electrical elements in a container.

[0024] (Schematic of Electrical Equipment) FIG. 1 is a perspective view of an electrical equipment 1 including a sealing device 10 of the electrical equipment in this embodiment. In FIG. 1, an oil-filled capacitor is exemplified as the electrical equipment 1. As shown in FIG. 1, the electrical equipment 1 has a box-shaped container 2, and insulating oil 3 as an insulating medium is enclosed in the container 2 together with electrical elements (not shown).

[0025] The introduction of the insulating oil 3 into the container 2 is performed using the sealing device 10. The sealing device 10 has both a function as a path for introducing the insulating oil 3 into the container 2 and a function of sealing the container 2.

[0026] (Configuration of Sealing Device) The sealing device 10 is attached, for example, at two locations on the end side of the upper wall 2A of the container 2. By attaching the sealing device 10 at two locations, it is possible to evacuate the inside of the container 2 using the path of one sealing device 10 and introduce the insulating oil 3 into the container 2 using the path of the other sealing device 10.

[0027] Hereinafter, the configuration of the sealing device 10 will be described in detail with reference to FIGS. 2 to 6. FIG. 2 is a perspective view of the sealing device 10 in a sealed state. Reference numeral 101 indicates the entire sealing device 10, and reference numeral 102 indicates the state in which the sealing device 10 is cut longitudinally. FIG. 3 is a partial cross-sectional view of the sealing device 10 in a sealed state. Note that FIG. 3 shows the state in which the terminal cap 40 is attached. FIG. 4 is a cross-sectional view of the sealing device 10 in an unsealed state. Note that FIGS. 3 and 4 show the state in which the sealing device 10 is fixed to the upper wall 2A of the container 2. FIG. 5 is a cross-sectional view of the first connector 20 of the sealing device 10. FIG. 6 is a partial cross-sectional view of the second connector 30 of the sealing device 10. Reference numeral X in FIGS. 3 to 5 is the center line of the sealing device 10 and also the center lines of the first connector 20 and the second connector 30.

[0028] As shown in FIG. 2, the sealing device 10 includes a first connector 20 and a second connector 30 detachably attached to the first connector 20. As shown in FIG. 3, a terminal cap 40 (see FIG. 3) is attached to the end of the second connector 30 opposite to the first connector 20.

[0029] As shown in FIG. 3, the first connector 20 has a communication hole 21 that communicates between the inside and outside of the container 2 and is fixed to the upper wall 2A, which is a wall of the container 2. The second connector 30 has an insertion portion 32 inserted into the communication hole 21 of the first connector 20 and a path hole 31 that passes through the inside of the insertion portion 32 and opens to the outer peripheral surface of the insertion portion 32 to communicate with the communication hole 21. The second connector 30 is detachably connected to the first connector 20 with the insertion portion 32 inserted into the communication hole 21 of the first connector 20.

[0030] More specifically, as shown in FIG. 5, the first connector 20 has a base portion 22 at the upper part and a protruding portion 23 provided so as to protrude from the lower surface of the base portion 22. The communication hole 21 is provided so as to penetrate from the upper surface 22A of the base portion 22, which is the upper surface of the first connector 20, to the lower surface 23A of the protruding portion 23, which is the lower surface of the first connector 20. The lower surface of the base portion 22 is horizontally formed in a direction (radial direction) perpendicular to the center line X.

[0031] As shown in Fig. 3, the first connector 20 is attached to the container 2 by fitting the protruding portion 23 into the opening 2Aa provided in the upper wall 2A of the container 2 and abutting the lower surface of the base portion 22 against the upper wall 2A of the container 2. The attached first connector 20 is joined by brazing or welding using silver solder or the like and fixed to the container 2 (upper wall 2A). The reference numeral 5 shown in Figs. 3 and 4 indicates the brazed or welded joint portion.

[0032] The communication hole 21 has an insertion hole portion 21A into which the insertion portion 32 of the second connector 30 is inserted, and a passage hole portion 21B that opens to the bottom surface 21Aa of the insertion hole portion 21A.

[0033] As shown in Fig. 5, the insertion hole portion 21A is located in the base portion 22, the passage hole portion 21B is located in the protruding portion 23, and they are in communication with the insertion hole portion 21A. In other words, the insertion hole portion 21A is formed inside the base portion 22, and the passage hole portion 21B is formed inside the protruding portion 23.

[0034] As shown in Fig. 3, the second connector 30 has an insertion portion 32 that is inserted into the communication hole 21 of the first connector 20, and a path hole 31 that passes through the inside of the insertion portion 32 and opens to the outer peripheral surface of the insertion portion 32.

[0035] In this embodiment, screw portions 24 and 35 for screw-connecting the second connector 30 to the first connector 20 are provided on the inner peripheral surface of the insertion hole portion 21A, which is the inner peripheral surface of the communication hole 21 on the first connector 20 side, and on the outer peripheral surface of the insertion portion 32 on the second connector 30 side. Thereby, the second connector 30 is detachably connected to the first connector 20 in a state where the insertion portion 32 is inserted into the communication hole 21 of the first connector 20.

[0036] Further, in this embodiment, the second connector 30 further has a body portion (non-insertion portion) 33 that protrudes from the communication hole 21 in a state where the insertion portion 32 is inserted into the communication hole 21. The path hole 31 passes through the body portion 33 and reaches the insertion portion 32.

[0037] Specifically, as shown in FIG. 6, the path hole 31 opens on the upper surface 33A of the body portion 33. The opening portion on the upper surface 33A of the body portion 33 is machined in a countersunk hole shape. The path hole 31 passes through the inside of the body portion 33 and the insertion portion 32 and opens on the outer peripheral surface of the insertion portion 32. The outer peripheral surface of the insertion portion 32 is a portion facing the hole wall of the insertion hole portion 21A in a state of being inserted into the communication hole 21 of the first connector 20 (see FIG. 3).

[0038] In the present embodiment, the path hole 31 is composed of a vertical hole portion 31A and a horizontal hole portion 31B. The vertical hole portion 31A opens on the upper surface 33A of the body portion 33 which is also the upper surface of the second connector 30, and penetrates vertically from the body portion 33 to the middle of the insertion portion 32. The horizontal hole portion 31B communicates with the vertical hole portion 31A at the lower end of the vertical hole portion 31A and opens at two locations on the outer peripheral surface of the insertion portion 32. Further, a screw portion 36 for screw-connecting the above-described terminal cap 40 is formed on the upper portion of the body portion 33.

[0039] As shown in FIG. 4, in the sealing device 10, by inserting the insertion portion 32 of the second connector 30 into the communication hole 21 of the first connector 20, the path hole 31 formed in the second connector 30 and the communication hole 21 formed in the first connector 20 communicate with each other in the insertion hole portion 21A.

[0040] Then, the insertion of the second connector 30 into the first connector 20 is made in a shallow state where the tip portion 32A, which is the end portion on the container 2 side of the insertion portion 32, does not contact the bottom surface 21Aa of the insertion hole portion 21A, so that the communication state between the insertion hole portion 21A and the passage hole portion 21B opening into the container 2 is maintained. A path leading to the inside of the container 2 is ensured. In other words, by inserting the second connector 30 into the first connector 20 in a shallow state where there is a gap C between the tip portion 32A of the insertion portion 32 and the bottom surface 21Aa of the insertion hole portion 21A, a path leading to the inside of the container 2 can be ensured.

[0041] Then, as shown in FIG. 3, the insertion of the second connector 30 into the first connector 20 is performed in a deep state where the tip 32A of the insertion portion 32 is in close contact with the bottom surface 21Aa of the insertion hole portion 21A, thereby closing the passage hole portion 21B. As a result, the insertion hole portion 21A and the passage hole portion 21B are no longer in communication, and the path leading to the inside of the container 2 can be blocked.

[0042] That is, in the sealing device 10, the portion of the insertion portion 32 on the container 2 side from the path hole 31 is configured to be able to close the passage hole portion 21B by being brought into close contact with the insertion hole portion 21A. By bringing the portion of the insertion portion 32 on the container 2 side from the path hole 31 into close contact with the insertion hole portion 21A, the passage hole portion 21B is closed, and the oil tightness and air tightness of the container 2 are ensured.

[0043] Specifically, in the present embodiment, the tip 32A, which is the end of the insertion portion 32 on the container 2 side, is configured to be able to close the passage hole portion 21B by being brought into close contact with the bottom surface 21Aa of the insertion hole portion 21A.

[0044] Furthermore, in the present embodiment, as shown in FIG. 5, the portion of the insertion hole portion 21A where the insertion portion 32 is in close contact is formed on an inclined surface that is inclined in a funnel shape toward the passage hole portion 21B. That is, the bottom surface 21Aa of the insertion hole portion 21A, which is the portion of the insertion hole portion 21A where the insertion portion 32 is in close contact, is formed on an inclined surface that is inclined in a funnel shape toward the passage hole portion 21B. In other words, the bottom surface 21Aa of the insertion hole portion 21A is inclined in a direction approaching the center line X as it goes toward the insertion hole portion 21A, and is formed in a shape that narrows like a funnel.

[0045] Then, as shown in FIG. 6, the portion of the insertion portion 32 on the second connector 30 side that is in close contact with the insertion hole portion 21A is also formed on a curved surface portion that protrudes toward the inclined surface on the insertion hole portion 21A side. That is, the tip 32A of the insertion portion 32, which is the portion of the insertion portion 32 that is in close contact with the insertion hole portion 21A, is also formed on a curved surface portion that protrudes toward the bottom surface 21Aa of the insertion hole portion 21A, and has a rounded shape. Note that instead of the curved surface portion, an inclined surface portion that is in close contact with the bottom surface 21Aa (the inclined surface on the insertion hole portion 21A side) of the insertion hole portion 21A may be used.

[0046] For example, in the case of a configuration where the bottom surface 21Aa of the insertion hole portion 21A and the tip portion 32A of the insertion portion 32 are both horizontally formed in a direction perpendicular to the center line X, high machining accuracy such as rubbing is required for the bottom surface 21Aa of the insertion hole portion 21A and the tip portion 32A of the insertion portion 32. However, by adopting such a configuration, the passage hole portion 21B can be closed without requiring high machining accuracy such as rubbing.

[0047] Also, in the present embodiment, the portion where the insertion hole portion 21A is formed in the first connector 20 and the insertion portion 32 of the second connector 30 are made of different materials from each other, and a material is used such that one is softer than the other. Specifically, in the present embodiment, the bottom surface 21Aa of the insertion hole portion 21A and the tip portion 32A of the insertion portion 32 are made of different materials from each other, and a material is used such that one is softer than the other.

[0048] As such a combination of materials, for example, a combination of soft brass or aluminum and hard iron can be considered. The materials of the entire first connector 20 and second connector 30 may be a combination of soft and hard as described above, or only the constituent parts of the bottom surface 21Aa of the insertion hole portion 21A and the tip portion 32A of the insertion portion 32 may be the above combination.

[0049] In such a configuration, since the side made of the soft material deforms following the side made of the hard material, a wider area of close contact can be ensured and the container 2 can be sealed more reliably.

[0050] Also, in the present embodiment, as shown in FIG. 6, the second connector 30 has a flange portion 34 on the body portion 33 that faces the upper surface 22A of the base portion 22 that is the opening surface of the communication hole 21 in the first connector 20.

[0051] By providing such a flange portion 34, as shown in FIG. 4, in a state where the second connector 30 is inserted into the first connector 20, a spacer 50 can be disposed between the flange portion 34 on the second connector 30 side and the upper surface 22A of the base portion 22 on the first connector 20 side.

[0052] By disposing the spacer 50, the insertion position of the second connector 30 can be easily made to be a constant distance from the bottom surface 21Aa of the insertion hole portion 21A of the passage to the container 2 and the gap C between the tip portion 32A of the insertion portion 32.

[0053] Furthermore, in the present embodiment, as shown in FIG. 3, the first connector 20 has a passage hole portion 21B formed therein, and a notch 23B is formed at the tip of the protruding portion 23 that discharges into the container 2 in a state of being fixed to the container 2.

[0054] By providing the protruding portion 23 and providing the notch 23B in the protruding portion 23, even when floating matter adheres to the tip of the protruding portion 23, a path can be secured by the notch 23B. Moreover, the notch is formed from the lower surface 23A of the protruding portion 23. Therefore, compared with a configuration in which an opening is provided in the outer peripheral wall of the protruding portion 23 to secure a path, the protruding dimension of the protruding portion 23 can be shortened, and thus the size of the container 2 can be reduced.

[0055] (Manufacturing process of an electrical device using a sealing device) FIG. 7 is a view showing the state of the sealing device 10 in each step until the container 2 is filled with insulating oil and sealed using the sealing device 10. Reference numeral 701 in FIG. 7 indicates the state where the sealing device 10 is attached to the container 2, and reference numeral 702 indicates the state of the sealing device 10 in the vacuum / impregnation treatment step of filling the container 2 with the insulating oil 3. Reference numeral 703 in FIG. 7 indicates the state where the filling of the insulating oil 3 is completed and the sealing device 10 is sealed, and reference numeral 704 indicates the state of attaching the end cap 40 to the sealing device 10.

[0056] As shown by reference numeral 701, first, the first connector 20 is fixed to the container 2, and the second connector 30 is inserted into the fixed first connector 20. At this time, a sealing tape (not shown) is wound around the threaded portion 35 of the second connector 30.

[0057] In the vacuum impregnation process, as shown by reference numeral 702, a spacer 50 is disposed between the first connector 20 and the flange portion 34 of the second connector 30. The second connector 30 is rotated and tightened with the spacer 50 sandwiched therebetween.

[0058] By using the spacer 50, the size of the gap C formed between the bottom surface 21Aa of the insertion hole portion 21A and the tip portion 32A of the insertion portion 32 can be made constant. Further, by changing the thickness of the spacer 50, the size of the gap C can be changed, and adjustment such as the filling amount per unit time is also possible.

[0059] One of the two sealing devices 10 is connected to a vacuum suction pipe (not shown) at the path hole 31 of the second connector 30, and an introduction pipe for the insulating oil 3 (not shown) is connected to the path hole 31 of the second connector 30 of the other sealing device 10, and the insulating oil 3 is filled while evacuating the inside of the container 2. In the figure, the evacuation path is indicated by a two-dot chain line arrow, and the path for introducing (impregnating) the insulating oil 3 is indicated by a solid line arrow.

[0060] When the filling of the insulating oil 3 is completed, as shown by reference numeral 703, the spacer 50 is removed, the second connector 30 is rotated, and tightened until it stops rotating. As a result, the tip portion 32A of the insertion portion 32 comes into close contact with the bottom surface 21Aa of the insertion hole portion 21A, the gap C disappears, and the passage hole portion 21B is closed. That is, the sealing device 10 is in a sealed state. Also, the screwed portion between the threaded portion 24 of the first connector 20 and the threaded portion 35 of the second connector 30 is effectively sealed with the sealing tape.

[0061] After achieving the sealed state, as shown by reference numeral 704, a terminal cap 40 is screwed to the upper portion of the second connector 30 to close the opening of the path hole 31.

[0062] (Description of the effect) According to the above configuration, the sealing device 10 inserts the communication hole 21 of the first connector 20 and the second connector 30 and inserts them shallowly, so that the communication hole 21 and the path hole 31 on the second connector 30 side can be communicated to secure a path leading to the inside of the container 2. After filling the container 2 with the insulating oil 3, by inserting it deeply, the portion on the container 2 side from the path hole 31 of the insertion portion 32 is brought into close contact with the insertion hole portion 21A, and the passage hole portion 21B is closed by being brought into close contact, so that the container 2 can be sealed. Specifically, the tip portion 32A of the insertion portion 32 is brought into close contact with the bottom surface 21Aa of the insertion hole portion 21A, and the passage hole portion 21B is closed to seal the container 2.

[0063] Also, even after the sealing is completed, by pulling up the second connector 30 and making the insertion shallow, the path leading to the inside of the container 2 can be secured again, and it is possible to easily re-do the work after sealing.

[0064] As a result, it is possible to realize a sealing device for an electrical device that does not require specialized skills for the sealing operation and can be easily re-done after sealing.

[0065] Moreover, since the first connector 20 and the second connector 30 are configured to be screwed together, the adjustment of the insertion depth and the connection between the first connector 20 and the second connector 30 can be performed by rotating the second connector 30.

[0066] That is, when inserting the second connector 30 into the first connector 20 and filling the insulating oil 3, a shallow screw connection is made for insertion, and after filling the insulating oil 3, the container 2 can be sealed by tightening the second connector 30 until it cannot be rotated. Also, by rotating the second connector 30 to loosen the tightening, it is possible to easily re-do the work after sealing.

[0067] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention.

Explanation of reference numerals

[0068] 1 Electrical equipment 2 Container 10 Sealing device 20 First connector 21 Communication hole 21A Insertion hole part 21Aa Bottom surface 21B Passage hole part 22 Base part 23 Protrusion 24, 35 Screw part 30 Second connector 31 Route hole 32 Insertion part 32A Tip part (end part on the container side of the insertion part) 33 Barrel part (non-insertion part) 34 Flange part

Claims

1. A first connector having a communication hole that communicates between the inside and outside of the container and is fixed to the container, an insertion portion inserted into the communication hole, and a path hole that passes through the inside of the insertion portion and opens to the outer peripheral surface of the insertion portion, and a second connector detachably connected to the first connector in a state where the insertion portion is inserted into the communication hole, the communication hole has an insertion hole portion into which the insertion portion is inserted, and a passage hole portion that opens to the bottom surface of the insertion hole portion, A sealing device for an electrical device configured to be able to close the passage hole portion by bringing a portion of the insertion portion on the container side from the path hole into close contact with the insertion hole portion.

2. The sealing device for an electrical device according to claim 1, wherein a screw portion for screw-connecting the second connector to the first connector is provided on the inner peripheral surface of the communication hole and the outer peripheral surface of the insertion portion.

3. A portion of the insertion hole portion where the insertion portion is in close contact is an inclined surface inclined in a funnel shape toward the passage hole portion, The sealing device for an electrical device according to claim 1, wherein a portion of the insertion portion in close contact with the insertion hole portion has an inclined surface portion having an inclination corresponding to the inclined surface, or a curved surface portion convex toward the inclined surface.

4. The second connector has a non-insertion portion that protrudes from the communication hole in a state where the insertion portion is inserted into the communication hole and through which the path hole passes inside, The sealing device for an electrical device according to claim 1, wherein the non-insertion portion has a flange portion facing an opening surface of the communication hole in the first connector.

5. The portion where the insertion hole portion is formed in the first connector and the insertion portion are made of different materials, and one is softer than the other. The sealing device for an electrical device according to claim 1.

6. The first connector has a protruding portion that discharges into the container in a state of being fixed to the container and has a passage hole portion formed inside, The sealing device for an electrical device according to claim 1, wherein a notch is formed at the tip of the protruding portion.

7. An electrical device including the sealing device for an electrical device according to any one of claims 1 to 6.

Images