JP2017101795A - Seal method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal method which can reduce a force necessary for making a seal plate abut on an inspected member, and can reduce the size of a drive source.SOLUTION: In this seal method for performing leak inspection, a second seal plate 22 is pressed to a second face 12 and an end face 21b of a first seal plate 21 after pressing the first seal plate 21 to a first face 11 in an inspected member 10 having an opening part 13 which straddles the adjacent second face 12 from the first face 11, and seals the inspected member 10. When pressing the first seal plate 21, both ends of a first rubber member 31 which are formed into circular shapes are made to protrude from the end face 21a in advance, and a second rubber seal member 32 is pressed to both the ends of the protruding first rubber seal member 31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sealing method, for example, a sealing method for leak inspection.

  For example, Patent Document 1 discloses a sealing method for leak inspection used for a cylinder block or the like.

  In the sealing method of Patent Document 1, when a leak test is performed by pressing a seal plate against an opening of a member to be inspected, a rubber seal member is fitted into a groove provided in the seal plate, and a rubber seal member is formed around the periphery of the opening. This is a method of sealing by adhering.

JP2015-175740A

  For example, as shown in FIG. 5A, when the member to be inspected 10 has an opening 113 extending over the upper surface 111 and the side surface 112 like a cylinder block, the first seal plate 121 is pressed against the upper surface 111. The leak test is performed by pressing the second seal plate 122 across the end surface 121b of the first seal plate 121 against the side surface 112.

  Here, as shown in FIG. 5 (b), the first rubber seal member 131 provided on the first seal plate 121 is provided in a U shape (with an open end) along the edge of the upper surface 111. It has been. On the other hand, as shown in FIG. 5C, the second rubber seal member 132 provided on the second seal plate 122 is O-shaped along the edge of the side surface 112 and the end surface 121 b of the first seal plate 121. (With the end closed).

  Then, as shown in FIG. 6A, the first seal plate 121 is pressed against the upper surface 111 of the member 10 to be inspected. As a result, as shown in FIG. 6B, both end portions 131 b of the first rubber seal member 131 are protruded from the end surface 121 b of the first seal plate 121. Then, as shown in FIG. 6C, when the second seal plate 122 is pressed against the side surface 112 of the member 10 to be inspected, both the first rubber seal members 131 as shown in FIG. The entire opening is sealed by pressing the second rubber seal member 132 against the end 131b.

  By pressing the first seal plate 121, both end portions 131 b of the first rubber seal member 131 protrude from the end surface 121 b of the first seal plate 121, respectively. A large force is required to press against the drive source 151, and the drive source 151 increases in size. In addition, since it is necessary to press the second rubber seal member 132 against both ends of the first rubber seal member 131 that has been hardened by applying a large force to eliminate the gap, the second seal plate 122 can also be pressed. A large force is required, and the drive source 152 becomes large.

  The present invention has been made to solve such a problem, and can reduce the force required to press the seal plate against the member to be inspected, and can reduce the size of the drive source. Provide a method.

  In the sealing method according to one aspect of the present invention, in the member to be inspected having an opening extending from the first surface to the second surface adjacent to the first surface, the first seal plate is pressed against the first surface, and then the second A sealing method for sealing a member to be inspected by pressing a second seal plate against a surface and an end surface of the first seal plate, and performing a leak test, A U-shaped first rubber seal member is provided along the peripheral edge of the opening on the first surface, and the peripheral edge of the opening on the second surface and the second seal plate An O-shaped second rubber seal member is provided along the end face of the first seal plate, and when the first seal plate is pressed, the first rubber seal member has an arc shape. Been formed End is previously protruded from the end surface, when pressed against the second seal plate, each of said ends of said first rubber seal member is protruded, pressed against the second rubber seal member.

  With such a configuration, the force necessary to press the first seal plate against the member to be inspected can be reduced, and the drive source can be reduced in size. Accordingly, when the second seal plate is pressed, the force required to press the second seal plate against the member to be inspected can be reduced because the first rubber seal member is not as hard as before. The drive source can be reduced in size.

  According to the present invention, there is provided a sealing method capable of reducing a force required to press a seal plate against a member to be inspected and miniaturizing a drive source.

(A) is the figure which illustrated the member used with the sealing method concerning an embodiment, (b) is the figure which illustrated the 1st seal plate concerning an embodiment, and (c) is an embodiment. It is the figure which illustrated the 2nd seal plate which concerns. (A) is sectional drawing which illustrated the state which contacted the to-be-inspected member with the 1st seal plate which concerns on embodiment, (b) is 1st of the 2nd seal plate which concerns on embodiment. It is sectional drawing which illustrated the state pressed against the rubber seal member, (c) illustrated the state which pressed the 2nd seal plate which concerns on embodiment to the to-be-tested member and the edge part of the 1st seal plate. It is sectional drawing. (A) is the figure which illustrated the 2nd rubber seal member pressed on the 2nd surface of the member to be examined concerning an embodiment, and the end of the 1st seal plate, and (b) is (a). It is an enlarged view of the part of A in FIG. (A) is the figure which illustrated the 1st rubber seal member pressed on the 1st surface of the member to be examined concerning an embodiment, and (b) is an enlarged view of the portion of B in (a). . (A) is the figure which illustrated the member used with the sealing method concerning a comparative example, (b) is the figure which illustrated the 1st seal plate concerning a comparative example, and (c) is a comparative example. It is the figure which illustrated the 2nd seal plate which concerns. (A) is sectional drawing which illustrated the state which made the to-be-inspected member contact the 1st seal plate which concerns on a comparative example, (b) is a to-be-inspected member in the 1st seal plate which concerns on a comparative example. FIG. 6C is a cross-sectional view illustrating a state in which the second seal plate according to the comparative example is pressed against the first rubber seal member, and FIG. It is sectional drawing which illustrated the state which pressed the 2nd seal plate which concerns on a comparative example on the to-be-inspected member and the edge part of the 1st seal plate. It is the graph which illustrated the relationship of the thrust applied to the output size and the output size according to the embodiment and the comparative example, the horizontal axis indicates the output size, and the vertical axis indicates the thrust applied per output size. Show. It is the graph which illustrated the thrust added with respect to the output white which concerns on embodiment and a comparative example, and a vertical axis | shaft shows the thrust per output white. (A) is sectional drawing which illustrated the state which pressed the 1st seal plate which concerns on a comparative example to a to-be-tested member, (b) is a to-be-tested member and the 2nd seal plate which concerns on a comparative example, and It is sectional drawing which illustrated the state pressed on the edge part of a 1st seal plate. (A) is sectional drawing which illustrated the state which pressed the 2nd seal plate which concerns on a comparative example on the to-be-inspected member and the edge part of a 1st seal plate, (b) is a to-be-tested object which concerns on a comparative example. It is the figure which illustrated the 2nd rubber seal member pressed on the 2nd surface of a test | inspection member, and the edge part of a 1st seal plate, (c) is an enlarged view of the part of C in (b).

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited to the following embodiment. In addition, for clarity of explanation, the following description and drawings are simplified as appropriate.

  A sealing method according to the embodiment will be described. The present embodiment is a sealing method for sealing a member to be inspected, such as an engine block having a three-sided joint portion such as a cylinder block, a head, and a chain case, and performing a leak test. First, members used in the method for sealing the member to be inspected will be described. FIG. 1A is a diagram illustrating members used in the sealing method according to the embodiment, FIG. 1B is a diagram illustrating a first seal plate according to the embodiment, and FIG. It is the figure which illustrated the 2nd seal plate concerning a form.

  As shown in FIGS. 1A to 1C, the member to be inspected 10 is, for example, an engine block. The member to be inspected 10 has a substantially rectangular parallelepiped shape. The first surface 11, for example, the upper surface, of the member to be inspected 10 has an opening 13. The second surface 12 of the member to be inspected 10, for example, one side surface adjacent to the first surface 11 also has an opening 13. Thus, the member to be inspected 10 has the opening 13 that extends from the first surface 11 to the adjacent second surface 12.

  When viewed from above, for example, from above, the periphery of the opening 13 in the first surface 11 is U-shaped. The second surface 12 side of the opening 13 of the first surface 11 is a U-shaped open portion. When viewed from the direction facing the second surface 12, for example, from the side of the second surface 12, the periphery of the opening 13 of the second surface 12 is U-shaped. The first surface 11 side of the opening 13 of the second surface 12 is a U-shaped open portion.

  The first seal plate 21 has a plate shape. One surface 21 a of the first seal plate 21 is formed to have a larger area than the opening 13 in the first surface 11 of the member to be inspected 10. A U-shaped groove 41 is formed on one surface 21a of the first seal plate 21 when viewed from the direction facing the one surface 21a. A groove 41 is formed along the periphery of the opening 13 when the first seal plate 21 is pressed against the first surface 11 of the member 10 to be inspected. Both ends of the U-shape of the groove 41 are located at the end portion 21 b of the first seal plate 21. Therefore, a cross section of the groove 41 is formed on the end surface 21 b of the first seal plate 21.

  The first rubber seal member 31 is fitted in the groove 41. Therefore, when the one surface 21 a of the first seal plate 21 is pressed against the first surface 11 of the member to be inspected 10, the U-shaped first rubber seal member 31 extends along the periphery of the opening 13. Close contact with. Thus, the first seal plate 21 is provided with the U-shaped first rubber seal member 31 along the periphery of the opening 13 in the first surface 11.

  When the first rubber seal member 31 is fitted into the first seal plate 21 and viewed from the direction facing the one surface 21a of the first seal plate 21, both ends of the first rubber seal member 31 are The end 31b is formed in a circular arc shape. When the first seal plate 21 is pressed against the first surface 11 of the member to be inspected 10, both ends of the first rubber seal member 31 formed in an arc shape are previously projected from the end surface 21 b of the first seal plate 21. deep. A portion protruding from the end surface 21b is referred to as an output white 31c.

  A drive source 51, for example, an actuator is provided on the other surface 21 c opposite to the one surface 21 a of the first seal plate 21. The drive source 51 generates a force (thrust) that presses the first seal plate 21 against the member 10 to be inspected.

  The second seal plate 22 has a plate shape. One surface 22 a of the second seal plate 22 is formed to have a larger area than the opening 13 in the second surface 12 of the member to be inspected 10. An O-shaped groove 42 is formed on one surface 22a of the second seal plate 22 when viewed from the direction facing the one surface 22a. After pressing one surface 21a of the first seal plate 21 against the first surface 11 of the member 10 to be inspected, one surface 22a of the second seal plate 22 is brought to the second surface 12 of the member 10 to be inspected. A groove 42 is formed so as to be along the peripheral edge of the opening 13 on the second surface 12 and the end surface 21b of the first seal plate 21 when pressed.

  The second rubber seal member 32 is fitted in the groove 42. Therefore, when the one surface 22 a of the second seal plate 22 is pressed against the second surface 12 of the member to be inspected 10, the O-shaped second rubber seal member 32 has the opening 13 in the second surface 12. Close contact is made along the peripheral edge and the end face 21 b of the first seal plate 21. As described above, the second seal plate 22 is provided with the O-shaped second rubber seal member 32 along the peripheral edge of the opening 13 on the second surface 12 and the end surface 21 b of the first seal plate 21. It has been.

  When viewed from the direction facing the one surface 22a of the second seal plate 22 with the second rubber seal member 32 fitted into the second seal plate 22, the second rubber seal member 32 includes Thick rubber portions 32c are provided at a plurality of places, for example, two places. When one surface 22a of the second seal plate 22 is pressed against the second surface 12 of the member 10 to be inspected, the thick rubber portion 32c contacts the end portion 31b protruding from the end surface 21b of the first seal plate 21. It is formed in the position to touch.

  A driving source 52, for example, an actuator is provided on the other surface 22 c opposite to the one surface 22 a of the second seal plate 22. The drive source 52 generates a force (thrust) that presses the second seal plate 22 against the member to be inspected 10.

  The leak tester 60 is provided on the other surface 22c side of the second seal plate 22, for example. For example, the pipe 61 is provided from the leak tester 60 to a through hole formed in the second seal plate 22. The leak tester 60 performs a leak inspection of the member to be inspected 10 via the pipe 61.

  FIG. 2A is a cross-sectional view illustrating a state where the first seal plate according to the embodiment is in contact with the member to be inspected, and FIG. 2B is a diagram illustrating the second seal plate according to the embodiment. It is sectional drawing which illustrated the state pressed on 1 rubber seal member, (c) is the state which pressed the 2nd seal plate which concerns on embodiment to the to-be-tested member and the edge part of a 1st seal plate. It is sectional drawing illustrated.

  As shown in FIG. 1B and FIG. 2A, an outboard 31 c is formed in advance at the end 31 b of the first rubber seal member 31. The tip of the protruding white 31c is formed in an arc shape when viewed from the direction facing the one surface 21a. In addition, the output size 17 is determined such that the volume of the output 31c is the same as the maximum gap volume 15. Here, the maximum clearance volume 15 is the volume of the space surrounded by the chamfer 14, the step 16, and the lower surface of the first rubber seal member 31. Here, the chamfer 14 is a surface obtained by chamfering a corner between the first surface 11 and the second surface 12 of the member 10 to be inspected, and the step 16 is a step 16 covering the first seal plate 21. This is the length of the step between the second surface 12 of the member to be inspected 10 and the end surface 21 b of the first seal plate 21 when pressed against the inspection member 10. The protrusion size 17 is the length from the end face 21b of the first seal plate 21 to the tip of the protrusion 31c.

  As shown in FIG. 2B, after the first seal plate 21 is pressed against the first surface 11, the second seal plate 22 is pressed against the second surface 12 and the end surface 21 b of the first seal plate 21. When hit, the portion of the protruding white 31 c fills the portion of the maximum gap volume 15.

  As shown in FIG. 2C, in the sealing method according to the embodiment, the dimension of the output sill 31c is determined in consideration of the chamfer 14 and the step 16 caused by the tolerance. For this reason, even when the level difference 16 occurs due to tolerance or the like, the level difference 16 can be filled by the first rubber seal member 31 and the second rubber seal member 32.

Next, the sealing method according to this embodiment will be described.
First, as shown in FIG. 1, a first seal plate 21 is pressed against the first surface 11 of the member to be inspected 10. For example, the drive source 51 provided on the other surface 21 c of the first seal plate 21 is driven to press the first seal plate 21 against the first surface 11 of the member 10 to be inspected.

  In the present embodiment, a protruding white 31 c is provided in advance at the end 31 b of the first rubber seal member 31. For this reason, it is not necessary to press the first seal plate 21 against the first surface 11 with a large force so that the first rubber seal member 31 protrudes from the end surface 21 b of the first seal plate 21. Accordingly, when the first seal plate 21 is pressed against the first surface 11 of the member to be inspected 10, the pressing force can be reduced.

  Next, after the first seal plate 21 is pressed against the first surface 11, the second seal plate 22 is pressed against the second surface 12 and the end surface 21 b of the first seal plate 21. For example, the drive source 52 provided on the other surface 22c of the second seal plate 22 is driven to press the second seal plate 22 against the second surface 12 and the end surface 21b. When the second seal plate 22 is pressed, the second rubber seal member 32 is pressed against each of both end portions 31b of the protruded first rubber seal member 31. Preferably, the thick rubber portion 32c is pressed against both end portions 31b.

  The first rubber seal member 31 is not in close contact with the first seal plate 21 and the member 10 to be inspected more than necessary. For this reason, when the second sealing plate 22 is pressed against the second surface 12, the output scissor 31 c can return between the first sealing plate 21 and the member to be inspected 10. Therefore, it is not necessary to apply a large deformation to the first rubber seal member 31. That is, the first rubber seal member 31 and the second rubber seal member 32 can be sealed with a minimum deformation.

  Fig.3 (a) is the figure which illustrated the 2nd rubber seal member pressed on the 2nd surface of the to-be-inspected member which concerns on embodiment, and the edge part of a 1st seal plate, (b) is ( It is an enlarged view of the part of A in a). Actually, the second rubber seal member 32 is blocked by the second seal plate 22 and cannot be seen in this manner. The second rubber seal member 32 is seen through the second seal plate 22.

  As shown in FIGS. 3A and 3B, in the present embodiment, the outer rubber 31 c is formed on the first rubber seal member 31, and the first seal plate 21 is formed on the first surface 11 of the member to be inspected 10. It is pressed. Therefore, the chamfer 14 and the step 16 caused by the tolerance can be filled and sealed. Further, the thickening portion 32c covers the protruding white 31c. Thereby, when pressing the 2nd seal plate 22 against the 2nd surface 12, the force (thrust) pressed can be made small. Even if the gap 18 is generated on the end surface 21b of the first seal plate 21, the thick rubber portion 32c covers the gap 18, so that leakage can be suppressed. Thus, this embodiment can suppress the leakage of the portion (three-surface mating portion) where the first rubber seal member 131 and the second rubber seal member 132 are in contact with each other, and can improve the sealing of the three-surface mating portion.

  Fig.4 (a) is the figure which illustrated the 1st rubber seal member pressed on the 1st surface of the to-be-inspected member which concerns on embodiment, (b) is an enlarged view of the part of B in (a). It is. As shown in FIGS. 4A and 4B, the first rubber seal member 31 is provided with a retaining portion 31e in the vicinity of the end portion 31b. The retaining portion 31e is a portion in which the thickness of the first rubber seal member 31 is increased. The retaining portion 31 e has a thickness equal to or greater than the width of the groove 41. Thereby, the retaining portion 31e comes into close contact with the groove 41. Therefore, it is possible to suppress the first rubber seal member 31 from coming out of the groove 41. In addition, it is possible to ensure the outside dimension 17.

  Next, the effect of the sealing method according to the present embodiment will be described in comparison with the problem in the comparative example. First, the 1st subject in a comparative example and the effect of this embodiment with respect to it are demonstrated.

  FIG. 5A is a diagram illustrating members used in the sealing method according to the comparative example, FIG. 5B is a diagram illustrating the first seal plate according to the comparative example, and FIG. It is the figure which illustrated the 2nd seal plate concerning an example. FIG. 6A is a cross-sectional view illustrating a state in which the first seal plate according to the comparative example is in contact with the member to be inspected. FIG. 6B is a cross-sectional view illustrating the first seal plate according to the comparative example. It is sectional drawing which illustrated the state pressed against the test | inspection member, (c) is sectional drawing which illustrated the state which pressed the 2nd seal plate which concerns on a comparative example on the 1st rubber seal member, (d ) Is a cross-sectional view illustrating a state in which the second seal plate according to the comparative example is pressed against the member to be inspected and the end portions of the first seal plate.

  As described above, in the comparative example, both end portions 131b of the first rubber seal member 131 are protruded from the end surfaces 121b of the first seal plate 121 by pressing the first seal plate 121. A large force is required to press one seal plate 121 against the member to be inspected 10, and the drive source 151 is increased in size. In addition, since it is necessary to press the second rubber seal member 132 against both ends of the first rubber seal member 131 that has been hardened by applying a large force to eliminate the gap, the second seal plate 122 can also be pressed. A large force is required, and the drive source 152 becomes large.

  Further, since a large force is applied to the first seal plate 121, it is difficult for the end 131 b that has once protruded to return between the first seal plate 121 and the upper surface 111. Therefore, when pressing the side surface 112 with the second seal plate 122, it is necessary to get over the protruding end portion 131 b of the second rubber seal member 132 to fill the gap, which is also large with respect to the second seal plate 122. Power is required.

  On the other hand, according to the sealing method of the present embodiment, since the outer protrusion 31c is formed in advance, when the first seal plate 21 is pressed against the first surface 11 of the member 10 to be inspected, the first It is not necessary to project the rubber seal member 31 from the end 21b. When the first seal plate 21 is pressed against the first surface 11 of the member 10 to be inspected, a necessary minimum force may be applied. Further, since the force (thrust) pressing the first seal plate 21 is small, the end portion 31b of the first rubber seal member 31 returns to a certain degree between the first surface 11 and the first seal plate 21. Can do. Therefore, when pressing the second seal plate 22, it is not necessary to apply a large deformation to the output sill 31 c. That is, since the seal is established by the minimum deformation of the first rubber seal member 31, the force (thrust) pressing the second seal plate 22 can be reduced. In addition, since the output scissor 31c has an arc shape, a high surface pressure is generated at the tip of the output scissor 31c even with a small force, and the sealing performance can be improved.

  FIG. 7 is a graph exemplifying the relationship between the output dimension and the thrust applied to the output according to the embodiment and the comparative example, the horizontal axis indicates the output dimension, and the vertical axis indicates one output scale. Indicates the thrust applied to.

  As shown in FIG. 7, in the embodiment, the thrust can be reduced when the outside dimension is 1.5 mm ± 0.2 mm. For example, the designed output dimension 17 is 1.5 mm.

  On the other hand, in the case of the comparative example, the end 131b of the first rubber seal member 131 is protruded by pressing the first seal plate 121 against the upper surface 111 with a large force. The protruded end portion 131b will be referred to as an outboard 131c. When the protruding dimension 117 formed in this way is 1.0 mm, the thrust is relatively small. However, in the case of the comparative example, a large thrust is required for sealing. On the other hand, as shown in FIG. 7, in the embodiment, the thrust can be dramatically reduced as compared with the comparative example. Thereby, the drive sources 51 and 52 can be reduced in size.

FIG. 8 is a graph illustrating the thrust applied to the output load according to the embodiment and the comparative example, and the vertical axis indicates the thrust per output load.
As shown in FIG. 8, when the sealing method of the embodiment is used, the thrust applied per one output can be reduced to about 1/3 as compared with the comparative example.

Next, the 2nd subject in a comparative example and the effect of this embodiment with respect to it are demonstrated.
FIG. 9A is a cross-sectional view illustrating a state in which the first seal plate according to the comparative example is pressed against the member to be inspected, and FIG. 9B illustrates the second seal plate according to the comparative example being inspected. It is sectional drawing which illustrated the state pressed on the edge part of a member and the 1st seal plate.

  As shown in FIG. 9 (a), in the case of the member to be inspected 10 having a three-surface mating portion such as an engine block, the chamfer 114 is processed on the corner between the upper surface 111 and the side surface 112. Sometimes. In addition, a step 116 may occur between the end 121b of the first seal plate 121 and the side surface 112 of the member to be inspected 10 due to tolerance. And as shown in FIG.9 (b), when there exists the chamfer 114 or the level | step difference 116 by tolerance, it is a part (three surface matching part) which the 1st rubber seal member 131 and the 2nd rubber seal member 132 contact, A gap 118 is formed, and a sealing failure occurs.

  On the other hand, as shown in FIG. 2C, in the present embodiment, since the outer dimension 17 is determined in consideration of the chamfer 14 and the tolerance, even when the step 16 is generated, the three-surface alignment is performed. The portion can be filled, and the occurrence of leakage can be suppressed.

Next, the 3rd subject in a comparative example and the effect of this embodiment with respect to it are demonstrated.
FIG. 10A is a cross-sectional view illustrating a state in which the second seal plate according to the comparative example is pressed against the end portion of the member to be inspected and the first seal plate, and FIG. It is the figure which illustrated the 2nd rubber seal member pressed against the 2nd surface of the member to be inspected, and the end of the 1st seal plate, and (c) is an enlarged drawing of the portion of C in (b). is there. 10B and 10C, the second rubber seal member 132 is actually blocked by the second seal plate 122 and cannot be seen in this manner. The second rubber seal member 132 is seen through the second seal plate 122.

  As shown in FIGS. 10A to 10C, in the three-surface mating portion, a gap 118 is formed at the upper portion of the end portion 131b (protruding white portion 131c) in which the first seal plate 121 is pressed against the upper surface 111 with a large force. It is easy to generate and it is easy to generate more from there.

  On the other hand, as shown in FIG. 3, in the present embodiment, since the protrusion 31 c is formed in advance, even if the gap 18 occurs due to the chamfer 14 or tolerance, the three-surface mating portion can be filled. And even if the clearance gap 18 generate | occur | produces in the upper part of the protrusion white 31c, since it has covered with the thick rubber part 32c, generation | occurrence | production of a leak can be suppressed.

  The embodiment of the sealing method according to the present invention has been described above. However, the present invention is not limited to the above-described configuration, and modifications can be made without departing from the technical idea of the present invention.

  For example, the member to be inspected 10 is not limited to an engine block. Also in the leak inspection of other members to be inspected 10, the sealing method of this embodiment can be applied when the first rubber seal member 31 and the second rubber seal member 32 are in contact with each other.

DESCRIPTION OF SYMBOLS 10 to-be-inspected member 11 1st surface 12 2nd surface 13 Opening part 14 Chamfering 15 Maximum clearance volume 16 Level | step difference 17 Protrusion dimension 18 Clearance 21 1st surface 21b End surface 21c The other surface 22 Plate 22a One surface 22c The other surface 31 First rubber seal member 31b End 31c Outlet 31e Detachment portion 32 Second rubber seal member 32c Thick rubber portion 41, 42 Groove 51, 52 Drive source 60 Leak tester 61 Pipe 111 Upper surface 112 Side surface 113 Opening portion 114 Chamfer 117 Discharge dimension 121 First seal plate 121b End surface 122 Second seal plate 131 First rubber seal member 131b End portion 131c Extrusion 132 Second rubber seal members 151 and 152 Drive source

Claims (1)

In a member to be inspected having an opening extending from the first surface to the second surface adjacent to the first surface, after pressing the first seal plate against the first surface, the end surface of the second surface and the first seal plate A sealing method for sealing a member to be inspected by pressing a second seal plate and performing a leak inspection,
The first seal plate is provided with a U-shaped first rubber seal member along the periphery of the opening in the first surface,
The second seal plate is provided with an O-shaped second rubber seal member along the peripheral edge of the opening on the second surface and the end surface of the first seal plate,
When pressing the first seal plate, both ends formed in an arc shape of the first rubber seal member protrude in advance from the end face,
When pressing the second seal plate, the second rubber seal member is pressed against each of the both ends of the protruded first rubber seal member;
Sealing method.

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