Sealing structure and method for manufacturing sealing structure

Abstract

A sealing structure includes a first member provided with a mounting hole, a second member opposite to the first member, a fastener inserted into the mounting hole and fastening the first member and the second member together, and a gasket including a plurality of components disposed between the first member and the second member, the plurality of components includes a first component having a first end face and a second component having a second end face opposite the first end face, and wherein the fastener is disposed between the first end face and the second end face.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a sealed structure and a method for manufacturing a sealed structure. BACKGROUND

[0002] Conventionally, a gasket provided between a pair of structures facing each other has been proposed. For example, Patent Literature 1 discloses a gasket having a structure that seals a gap between a plurality of divided segments by a liquid gasket.

[0003] Related Art Documents Patent Literature Patent Literature 1: Japanese Patent Application Publication No. 2020-76467 SUMMARY

[0004] Problem to be Solved by the Invention However, in the related art, a plurality of divided segments are adhered together by an adhesive or a liquid gasket. Therefore, a step of applying the adhesive or the liquid gasket is required, which poses a problem that the gasket assembly step is complicated. In view of the above, an aspect of the present disclosure aims to construct a sealed structure by a simple operation.

[0005] Means for Solving the Problem A sealed structure according to an aspect of the present disclosure includes a first member provided with a mounting hole, a second member opposite to the first member, a fastener inserted into the mounting hole and fastening the first member and the second member together, and a gasket including a plurality of components arranged between the first member and the second member, wherein the plurality of components include a first component having a first end face and a second component having a second end face opposite to the first end face, and wherein the fastener is arranged between the first end face and the second end face.

[0006] A method for manufacturing a sealed structure according to an aspect of the present disclosure includes a step of arranging a plurality of components constituting a gasket between a first member provided with a mounting hole and a second member opposite to the first member, the step being a step of arranging the plurality of components such that a first end face of a first component among the plurality of components and a second end face of a second component among the plurality of components face each other, and a step of fastening the first member and the second member together by arranging a fastener between the first end face and the second end face by inserting the fastener into the mounting hole. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 is a side view of a sealed structure according to a first embodiment.

[0008] Figure 2 is a plan view of a gasket.

[0009] Figure 3 is a sectional view of a component.

[0010] Figure 4 is an explanatory diagram showing a press process according to a comparative example.

[0011] Figure 5 is an explanatory diagram showing a press process according to a first embodiment.

[0012] Figure 6 is an enlarged plan view of the vicinity of a fastener.

[0013] Figure 7 is a plan view of a first component and a second component.

[0014] Figure 8 is an enlarged plan view of the vicinity of a fastener according to a second embodiment.

[0015] Figure 9 is a plan view of a first component and a second component according to a second embodiment.

[0016] Figure 10 is a side view of a fastener according to a second embodiment.

[0017] Figure 11 is a side view of a fastener according to a modified example. DETAILED DESCRIPTION

[0018] A: First Embodiment Figure 1 is a sectional view of a sealing structure 100 according to a first embodiment of the present disclosure. As shown, the sealing structure 100 according to the first embodiment includes a first member 10, a second member 20, a gasket 30, and a plurality of fasteners 40. For convenience of explanation, Figure 1 a state in which the first member 10 and the second member 20 are separated from each other is shown. Figure 1

[0019] The first member 10 and the second member 20 are opposed to each other. The first member 10 is a hollow member including an engagement face 11 provided with an opening 12. Similarly, the second member 20 is a hollow member including an engagement face 21 provided with an opening 22. The first member 10 and the second member 20 are fastened together by the plurality of fasteners 40 in a state in which the engagement face 11 and the engagement face 21 are opposed to each other. The opening 12 of the first member 10 and the opening 22 of the second member 20 are in communication with each other to form an internal space of the sealing structure 100.

[0020] Each of the plurality of fasteners 40 is a bolt that fastens the first member 10 and the second member 20 together. The plurality of fasteners 40 are disposed at intervals from each other around the opening 12 and the opening 22.

[0021] ​The gasket 30 is an annular sealing member provided between the first member 10 and the second member 20. Specifically, the gasket 30 is sandwiched between the joint surface 11 of the first member 10 and the joint surface 21 of the second member 20. The gasket 30 is provided around the inside space of the sealing structure 100.

[0022] Note that, in the following description, it is assumed that there is a Z-axis. The Z-axis is an axis in the thickness direction of the gasket 30. In other words, the gasket 30 is provided in a plane perpendicular to the Z-axis. Further, in the following description, a view of the sealing structure 100 along the line of sight of the Z-axis is referred to as a "top view".

[0023] Figure 2 is a top view of the gasket 30. Note that, Figure 2 In FIG. 6, the outline of each of the plurality of fasteners 40 is also shown in a dashed line. As Figure 2 indicated, the overall shape of the gasket 30 according to the first embodiment is a rectangular annular shape (in other words, a rectangular frame shape). Specifically, the gasket 30 includes a plurality of components 50. The plurality of components 50 are arranged between the first member 10 (joint surface 11) and the second member 20 (joint surface 21).

[0024] Each of the plurality of components 50 is an elongated component in a straight line shape, a broken line shape, or a curved line shape. The gasket 30 is composed of the respective components 50 arranged in an annular shape. The fasteners 40 are arranged between two adjacent components 50.

[0025] Figure 3 is a cross-sectional view of each of the plurality of components 50. As Figure 3 indicated, each of the plurality of components 50 includes a base 500, a first elastic layer 501, and a second elastic layer 502. The base 500 is a plate-shaped rigid member, for example, made of a metal material. Specifically, the base 500 is made of, for example, a stainless steel plate, a cold-rolled steel plate, a galvanized steel plate, or an aluminum alloy plate.

[0026] The first elastic layer 501 and the second elastic layer 502 are elastic films made of an elastic material and covering the base 500. The first elastic layer 501 covers one surface of the base 500. The second elastic layer 502 covers the other surface of the base 500. In other words, each of the plurality of components 50 is a laminate sandwiching the base 500 between the first elastic layer 501 and the second elastic layer 502. Note that, the surface of the base 500 can be surface-treated to ensure adhesion to the first elastic layer 501 and the second elastic layer 502.

[0027] The first elastic layer 501 and the second elastic layer 502 are made of, for example, a synthetic rubber plate (for example, a foamed rubber) containing one or more rubber compounds selected from among nitrile rubber, styrene-butadiene rubber, fluororubber, acrylic rubber, and silicone rubber.

[0028] Each of the plurality of components 50 is manufactured by a process (stamping process) in which a plate-shaped member (hereinafter referred to as "base member") as a material is partially stamped, for example, by using a press. The base member is a laminated substrate in which both surfaces of a metal plate are covered with an elastic film.

[0029] Figure 4 is a explanatory diagram illustrating a stamping process according to a configuration of a gasket 91 similar to the gasket 30 of the first embodiment, which is composed of a single member (hereinafter referred to as "comparative example"). As shown in Figure 4 , in the comparative example, a portion of the base member 90 located outside the gasket 91 and a portion of the base member 90 located inside the gasket 91 are to be discarded. As described above, in the comparative example, a larger base member 90 is required, and the number of gaskets 91 manufactured from the base member 90 is small, so that it is difficult to reduce manufacturing costs. In addition, a large portion of the base member 90 is discarded, so that improvement is required from the viewpoint of environmental protection.

[0030] Figure 5 is a explanatory diagram illustrating a stamping process according to the first embodiment. As shown in Figure 5 , in the first embodiment, a plurality of components 50 having the same shape and adjacent to each other are manufactured from the base member 90. Therefore, compared with the comparative example, the size of the base member 90 required is reduced, and the portion of the base member 90 discarded is reduced. According to the above-described configuration, compared with the comparative example, the number of gaskets 30 manufactured from the base member 90 can be increased, so that manufacturing costs can be reduced; in addition, resources can be effectively utilized, so that environmental protection can be facilitated.

[0031] Figure 6 is a cross-sectional view near the fastener 40 arbitrarily selected in the sealing structure 100 according to the first embodiment. As shown in Figure 6 , the fastener 40 is a bolt composed of a head portion 41 and a shank portion 42. The head portion 41 is connected to a proximal end of the shank portion 42. The shank portion 42 includes a shaft portion 421 and a threaded portion 422. The threaded portion 422 is a cylindrical portion of the shank portion 42 including a distal end opposite to the head portion 41. A thread groove is provided on an outer periphery of the threaded portion 422. The shaft portion 421 is a cylindrical portion of the shank portion 42 including a proximal end adjacent to the head portion 41. It is to be noted that the shaft portion 421 can be omitted.

[0032] As shown in Figure 6As shown, the first member 10 is provided with a mounting hole 15 corresponding to each of the plurality of fasteners 40. The mounting hole 15 is a circular through-hole formed to have a diameter slightly larger than that of the shank portion 42 of the fastener 40. On the other hand, the second member 20 is provided with a mounting hole 25 corresponding to each of the plurality of fasteners 40. The mounting hole 25 is a circular bottomed hole having a thread groove on an inner peripheral surface thereof to engage with a thread groove of the fastener 40. The fastener 40 is inserted into the mounting hole 15 and the mounting hole 25. Specifically, in a state where the shank portion 42 of the fastener 40 passes through the mounting hole 15, the threaded portion 422 is fixed to the mounting hole 25.

[0033] In Figure 6 , two adjacent members 50 selected arbitrarily from among the plurality of members 50 of the gasket 30 are shown as a first member 51 and a second member 52. In other words, Figure 6 The configuration shown is applicable to each group of two adjacent members 50. Furthermore, Figure 7 is a plan view of the first member 51 and the second member 52.

[0034] As Figure 6 and Figure 7 shown, the first member 51 includes a first end surface 71. Likewise, the second member 52 includes a second end surface 72, and the first end surface 71 and the second end surface 72 face each other. In a plan view, the fastener 40 is disposed between the first end surface 71 and the second end surface 72.

[0035] The first end surface 71 includes a first arc-shaped surface 711 and a first flat surface 712. The first arc-shaped surface 711 is an arc-shaped inner peripheral surface along an outer peripheral surface of the shank portion 42 of the fastener 40. Specifically, the first arc-shaped surface 711 is a cylindrical surface having a center axis along the Z axis and having an inner diameter slightly larger than an outer shape of the shank portion 42. The first flat surface 712 is a flat surface adjacent to the first arc-shaped surface 711. Specifically, the first flat surface 712 is disposed on both sides of the first arc-shaped surface 711.

[0036] Similarly to the first end surface 71, the second end surface 72 includes a second arc-shaped surface 721 and a second flat surface 722. The second arc-shaped surface 721 is an arc-shaped inner peripheral surface along an outer peripheral surface of the shank portion 42 of the fastener 40. Specifically, the second arc-shaped surface 721 is a cylindrical surface having a center axis along the Z axis and having an inner diameter slightly larger than an outer shape of the shank portion 42. The second flat surface 722 is a flat surface adjacent to the second arc-shaped surface 721. Specifically, the second flat surface 722 is disposed on both sides of the second arc-shaped surface 721.

[0037] As Figure 7 shown, the first flat surface 712 and the second flat surface 722 face each other with a slight space therebetween. Note that the first flat surface 712 and the second flat surface 722 can be in contact with each other without a gap.

[0038] Furthermore, asFigure 7 As shown, the first arc surface 711 and the second arc surface 721 form a cylindrical space. The shank portion 42 of the fastener 40 is arranged in the cylindrical space surrounded by the first arc surface 711 and the second arc surface 721. In other words, the fastener 40 is arranged between the first arc surface 711 and the second arc surface 721.

[0039] As described above, the fastener 40 is provided between two adjacent members 50 (51, 52). In other words, a gasket for sealing the internal space of the sealed structure 100 is constituted by a combination of a plurality of members 50 and a plurality of fasteners 40. Specifically, the fastener 40 for fastening the first member 10 and the second member 20 together is arranged between the first end surface 71 and the second end surface 72, thereby achieving a sealing function. Thus, in a state where a plurality of members 50 are arranged between the first member 10 and the second member 20, the sealed structure 100 can be constructed by a simple operation of fastening the first member 10 and the second member 20 together by a plurality of fasteners 40. For example, in the step of constructing the sealed structure 100, an operation of applying an adhesive or a liquid gasket is not required.

[0040] Further, for example, in a configuration in which a plurality of members 50 are joined together by welding, a concavo-convex can be formed at the joint. Further, in a configuration in which a plurality of members 50 are bonded together by an adhesive, the overlapping members 50 need to be bonded, and thus a concavo-convex can be formed at the joint. As described above, in a state in which a concavo-convex is formed at the joint, it is difficult to sufficiently ensure the sealing performance. In the first embodiment, the first end surface 71 of the first member 51 and the second end surface 72 of the second member 52 are arranged to face each other, and thus formation of a concavo-convex can be substantially prevented. Thus, a decrease in the sealing performance due to a concavo-convex at the joint can be substantially prevented.

[0041] In the first embodiment, in particular, the fastener 40 is provided in the cylindrical space between the first arc surface 711 and the second arc surface 721. Thus, for example, compared with a configuration in which the first end surface 71 and the second end surface 72 are simple planes, a gap between the outer peripheral surface of the fastener 40 and each of the first end surface 71 and the second end surface 72 can be reduced; as a result, the sealing performance can be improved.

[0042] B: Second Embodiment A second embodiment according to the present disclosure will be described below. Note that, in the description of the following embodiments, elements having the same function as the first embodiment are denoted by the same reference numerals as in the description of the first embodiment, and the detailed description thereof is appropriately omitted.

[0043] The sealed structure 100 according to the second embodiment is similar to the sealed structure 100 according to the first embodiment, and thus the detailed description thereof is appropriately omitted. Figure 1The first embodiment shown includes the first member 10, the second member 20, the gasket 30, and the plurality of fasteners 40. The gasket 30 includes a plurality of components 50.

[0044] Figure 8 is a sectional view near any selected fastener 40 in the sealing structure 100 according to the second embodiment. Further, Figure 9 is a plan view of first and second components 51 and 52 adjacent to each other constituting the plurality of components 50 of the gasket 30 according to the second embodiment.

[0045] As Figure 8 and Figure 9 shown, the sealing structure 100 according to the second embodiment includes a sealing material 80 in addition to the similar elements to the first embodiment. The sealing material 80 is provided for each of the plurality of fasteners 40. Each sealing material 80 is an elastic body provided between the first end face 71 of the first component 51 and the second end face 72 of the second component 52. The sealing material 80 is made of, for example, an elastic material such as nitrile rubber, styrene butadiene rubber, fluororubber, acrylic rubber, or silicone rubber.

[0046] Figure 10 is a side view of the fastener 40 according to the second embodiment. As Figure 10 shown, the fastener 40 in an initial state not provided in the sealing structure 100 is provided with a sealing material 85. Specifically, the threaded portion 422 of the shank portion 42 of the fastener 40 is covered with the sealing material 85. The sealing material 85 is a coating film that becomes the sealing material 80 in a state where the fastener 40 is provided in the sealing structure 100. The sealing material 85 is formed, for example, to have an appropriate film thickness in a range of 0.1 mm or more and 5.0 mm or less. Note that the sealing material 85 can be a liquid material or a gel-like material.

[0047] By inserting the above-described fastener 40 into the mounting hole 15 and the mounting hole 25, the sealing material 85 is provided between the first end face 71 and the second end face 72. By providing the sealing material 85, the sealing material 80 is formed.

[0048] As Figure 8 and Figure 9 shown, the sealing material 80 includes a first sealing portion 81 and a second sealing portion 82. The first sealing portion 81 is a portion provided in a gap between the fastener 40 and each of the plurality of components 50. Specifically, the first sealing portion 81 is provided between the first arc face 711 and the outer peripheral surface of the shank portion 42 of the fastener 40, and between the second arc face 721 and the outer peripheral surface of the shank portion 42 of the fastener 40. In other words, the first arc face 711, the second arc face 721, and the outer peripheral surface of the shank portion 42 are in contact with the first sealing portion 81, respectively. As can be understood from the above description, the first sealing portion 81 is a cylindrical portion.

[0049] As Figure 9 illustrated, the second sealing portion 82 is a portion of the sealing material 80 sandwiched between the first plane 712 of the first end surface 71 and the second plane 722 of the second end surface 72. In other words, the first plane 712 and the second plane 722 are in contact with the second sealing portion 82, respectively. As can be understood from the above description, the second sealing portion 82 is a flat plate-like portion.

[0050] As can be understood from the above description, in the second embodiment, the gasket for sealing the internal space of the sealing structure 100 is constituted by a combination of the plurality of members 50, the plurality of fasteners 40, and the plurality of sealing materials 80.

[0051] The second embodiment provides the same effects as the first embodiment. In addition, in the second embodiment, the sealing material 80 is arranged between the first end surface 71 and the second end surface 72 in addition to the fastener 40. Therefore, compared with the first embodiment in which only the fastener 40 is arranged between the first end surface 71 and the second end surface 72, the sealing performance of the sealing structure 100 can be improved.

[0052] In the second embodiment, in particular, the first sealing portion 81 is arranged between the outer peripheral surface of the fastener 40 and each of the first arc-shaped surface 711 and the second arc-shaped surface 721; therefore, compared with a configuration in which a gap is formed between the outer peripheral surface of the fastener 40 and each of the first arc-shaped surface 711 and the second arc-shaped surface 721, the sealing performance of the sealing structure 100 can be sufficiently improved.

[0053] In addition, in the second embodiment, the second sealing portion 82 is arranged between the outer peripheral surface of the fastener 40 and each of the first plane 712 and the second plane 722; therefore, compared with a configuration in which a gap is formed between the first plane 712 and the second plane 722, the sealing performance of the sealing structure 100 can be sufficiently improved.

[0054] C: Modified Examples Specific modified examples applicable to each of the above-described embodiments will be described below. Two or more of the following modified examples can be arbitrarily selected in combination as long as no conflict arises.

[0055] (1) In the second embodiment, a configuration in which the threaded portion 422 of the fastener 40 is covered with the sealing material 85 is described; however, as Figure 11 illustrated, the entire shank portion 42 of the fastener 40 can be covered with the sealing material 85.

[0056] (2) In the second embodiment, the configuration in which the sealing material 80 includes the first sealing portion 81 and the second sealing portion 82 is described; however, either the first sealing portion 81 or the second sealing portion 82 can be omitted. For example, in a configuration in which the first arc surface 711 and the second arc surface 721 are in close contact with the outer peripheral surface of the fastener 40, the first sealing portion 81 can be omitted. Alternatively, for example, in a configuration in which the first flat surface 712 and the second flat surface 722 are in close contact with each other, the second sealing portion 82 can be omitted.

[0057] (3) The structure of the laminate included in each of the plurality of members 50 is not limited to the examples of each of the above-described embodiments. For example, in each of the plurality of members 50, a base film for improving adhesion between the base portion 500 and either the first elastic layer 501 or the second elastic layer 502 can be provided between them. Further, the base portion 500 can be composed of a laminate of a plurality of layers having different materials. Likewise, each of the first elastic layer 501 and the second elastic layer 502 can be composed of a laminate of a plurality of layers having different materials.

[0058] (4) The planar shape of the gasket 30 is not limited to the examples of each of the above-described embodiments. For example, each of the above-described embodiments is also applicable to a gasket 30 that is annular or polygonal. In each of the above-described embodiments, the gasket 30 that is continuous over the entire circumference is described; however, each of the above-described embodiments is also applicable to a gasket 30 that has a planar shape that is cut off at a specific portion (e.g., a joint portion). In other words, the planar shape of the gasket 30 can be a partially discontinuous shape. Further, the number of members 50 that constitute the gasket 30 is not limited to the examples of each of the above-described embodiments. For example, the gasket 30 can be composed of two members 50.

[0059] (5) The expression "the n-th" (n is a natural number) used in the present disclosure is for convenience, and is merely a form label to distinguish different elements from each other, and the expression does not have a substantial inherent meaning. Therefore, indicating the position or manufacturing order of an element as "the n-th" is not limited to a narrow literal interpretation, and the position and order of the element and the like should be understood broadly.

[0060] D: Supplementary Note The following configurations can be derived from the above-described embodiments.

[0061] A sealing structure according to one aspect (first aspect) of the present disclosure includes a first member provided with a mounting hole, a second member opposite to the first member, a fastener inserted into the mounting hole and fastening the first member and the second member together, and a gasket including a plurality of components arranged between the first member and the second member; wherein the plurality of components includes a first component having a first end surface and a second component having a second end surface opposite to the first end surface; and wherein the fastener is arranged between the first end surface and the second end surface. According to this aspect, the fastener for fastening the first member and the second member together is arranged between the first end surface and the second end surface, thereby achieving a sealing function. Thus, in a state where the plurality of components is arranged between the first member and the second member, a simple operation of fastening the first member and the second member together by the fastener can construct the sealing structure. For example, in the step of constructing the sealing structure, an operation of applying an adhesive or a liquid gasket is not required.

[0062] In a specific example of the first aspect (second aspect), the first end surface includes a first arc-shaped surface along an outer peripheral surface of the fastener, the second end surface includes a second arc-shaped surface along the outer peripheral surface of the fastener, and the fastener is arranged between the first arc-shaped surface and the second arc-shaped surface. According to this aspect, since the fastener is disposed in a cylindrical space between the first arc-shaped surface and the second arc-shaped surface, a gap between the outer peripheral surface of the fastener and each of the first end surface and the second end surface can be reduced; as a result, the sealing performance can be improved.

[0063] A specific example of the second aspect (third aspect) further includes a first sealing portion provided between the first arc-shaped surface and the outer peripheral surface of the fastener and between the second arc-shaped surface and the outer peripheral surface of the fastener. In this aspect, the first sealing portion is arranged between the outer peripheral surface of the fastener and each of the first arc-shaped surface and the second arc-shaped surface; thus, compared to a configuration in which a gap is formed between the outer peripheral surface of the fastener and each of the first arc-shaped surface and the second arc-shaped surface, the sealing performance can be sufficiently improved.

[0064] In a specific example of the second aspect or the third aspect (fourth aspect), the first end surface includes a first flat surface adjacent to the first arc-shaped surface, the second end surface includes a second flat surface adjacent to the second arc-shaped surface, and the sealing structure further includes a second sealing portion sandwiched between the first flat surface and the second flat surface. In this aspect, the second sealing portion is arranged between the outer peripheral surface of the fastener and each of the first flat surface and the second flat surface; thus, compared to a configuration in which a gap is formed between the first flat surface and the second flat surface, the sealing performance can be sufficiently improved.

[0065] A specific example of any one of the first to fourth aspects (fifth aspect) further includes a sealing material disposed between the first end surface and the second end surface. In this aspect, since the sealing material is disposed between the first end surface and the second end surface in addition to the fastener, the sealing performance can be improved compared to a configuration in which only the fastener is disposed between the first end surface and the second end surface.

[0066] In a specific example of any one of the first to fifth aspects (sixth aspect), each of the plurality of components includes a base portion composed of a metal material, a first elastic layer covering one surface of the base portion, and a second elastic layer covering the other surface of the base portion. According to this aspect, sufficient sealing performance can be ensured by the first and second elastic layers, and the rigidity of the component can be maintained by the base portion.

[0067] A method for manufacturing a sealed structure according to one aspect of the present disclosure (seventh aspect) includes a step of arranging a plurality of components that constitute a gasket between a first member provided with a mounting hole and a second member opposite the first member, the step being a step of arranging the plurality of components such that a first end surface of a first component of the plurality of components and a second end surface of a second component of the plurality of components face each other, and a step of fastening the first member and the second member together by inserting a fastener into the mounting hole so as to arrange the fastener between the first end surface and the second end surface. According to this aspect, in a state in which the plurality of components are arranged between the first member and the second member, the first member and the second member are fastened together by the simple operation of the fastener, and thus a sealed structure can be constructed.

[0068] A specific example of the seventh aspect (eighth aspect) further includes a step of manufacturing the plurality of components by punching a plate-shaped member. According to this aspect, the plurality of components can be manufactured at the same time by punching a base member. Furthermore, since the gasket is manufactured in a state in which it is divided into the plurality of components, compared to a configuration in which a gasket having a similar shape is composed of a single member, the portion of the base member that is discarded can be reduced.

[0069] LIST OF REFERENCE NUMERALS 100 …… sealed structure, 10 …… first member, 11 …… joint surface, 12 …… opening, 15 …… mounting hole, 20 …… second member, 21 …… joint surface, 22 …… opening, 25 …… mounting hole, 30 …… gasket, 40 …… fastener, 41 …… head portion, 42 …… shaft portion, 421 …… shaft portion, 422 …… threaded portion, 50, 51, 52 …… component, 500 …… base portion, 501 …… first elastic layer, 502 …… second elastic layer, 71 …… first end surface, 711 …… first arc surface, 712 …… first flat surface, 72 …… second end surface, 721 …… second arc surface, 722 …… second flat surface, 80 …… sealing material, 81 …… first sealing portion, 82 …… second sealing portion, 90 …… base member

Claims

1. A sealing structure comprising: a first member provided with a mounting hole; a second member opposite to the first member; a fastener inserted into the mounting hole and fastening the first member and the second member together; and a gasket including a plurality of components arranged between the first member and the second member, wherein the plurality of components includes: a first component having a first end surface; and a second component having a second end surface opposite to the first end surface, and wherein the fastener is arranged between the first end surface and the second end surface.

2. The sealing structure according to claim 1, the first end surface includes a first arc-shaped surface along an outer peripheral surface of the fastener, wherein wherein the second end surface includes a second arc-shaped surface along the outer peripheral surface of the fastener, and wherein the fastener is arranged between the first arc-shaped surface and the second arc-shaped surface.

3. The sealing structure according to claim 2, further comprising: a first seal portion provided between the first arc-shaped surface and the outer peripheral surface of the fastener and between the second arc-shaped surface and the outer peripheral surface of the fastener.

4. The sealing structure according to claim 2 or 3, the first end surface includes a first flat surface adjacent to the first arc-shaped surface, and wherein wherein the second end surface includes a second flat surface adjacent to the second arc-shaped surface, the sealing structure further comprising: a second seal portion sandwiched between the first flat surface and the second flat surface.

5. The sealing structure according to claim 1, further comprising: a sealing material provided between the first end surface and the second end surface. Each of the plurality of components includes:

6. The sealed structure of claim 1, wherein, a base portion composed of a metal material; a first elastic layer covering one surface of the base portion; and a second elastic layer covering the other surface of the base portion.

7. A method for manufacturing a sealing structure, the method comprising: a step of arranging a plurality of components constituting a gasket between a first member provided with a mounting hole and a second member opposite to the first member, the step being a step of arranging the plurality of components such that a first end surface of a first component among the plurality of components and a second end surface of a second component among the plurality of components are opposite to each other; and a step of fastening the first member and the second member together by inserting a fastener into the mounting hole so as to arrange the fastener between the first end surface and the second end surface.

8. The method for manufacturing a sealing structure according to claim 7, further comprising: a step of manufacturing the plurality of components by punching a plate-like member. ​

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