JP7398726B2 - Seal structure and lid member - Google Patents

Description

The present invention relates to a seal structure and a lid member.

2. Description of the Related Art Conventionally, some vehicles and electrical equipment have been provided with an opening for inspection and repair and a lid member for opening and closing the opening. A gasket is interposed between the periphery of the opening and the periphery of the lid member in order to prevent foreign matter from entering the opening, but each time the lid member is opened and inspected, etc. It was necessary to reassemble the gasket.
For example, Patent Document 1 listed below discloses a unit case in which a service cover that covers a service hole is provided with a seal groove into which a gasket is fitted.
Further, Patent Document 2 and Patent Document 3 listed below disclose a service cover ( cover) is disclosed.

Japanese Patent Application Publication No. 2015-122914 Japanese Patent Application Publication No. 2012-248415 JP 2018-105393 Publication

However, in the configurations described in each of the above patent documents, it is necessary to provide a sealing groove or to provide a separate member in addition to the cover body to hold the gasket, resulting in a problem that the structure becomes complicated. was there.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a seal structure and a lid member that can simplify the structure while improving the ease of assembly.

In order to achieve the above object, a seal structure according to the present invention is a seal structure that seals the periphery of an opening provided in a member to be attached and a lid member that covers the opening so as to be openable and closable. A first surface and a second surface in the form of flat surfaces facing each other are provided on the periphery and the peripheral edge of the lid member facing thereto, and a sheet-like surface is provided between the first surface and the second surface. A gasket main body is provided with a gasket main body that is large and annular and has fibers and is compressible, and the first surface or the second An adhesive layer is provided to removably fix the gasket main body to two surfaces, and the adhesive layer has weak adhesiveness and has a peel adhesion strength of 2 as measured in accordance with JIS K6854-2. It is characterized by being between .0N and 8.0N .

Further, in order to achieve the above object, the lid member according to the present invention is a lid member that covers an opening provided in an attached member in a freely openable and closable manner, and includes a flat surface around the opening of the attached member. a lid body having a flat second surface opposite to the first surface provided on the peripheral edge of the back side; and a sheet-like and annular lid body disposed between the first surface and the second surface. a gasket main body that contains fibers and has compressibility; and a gasket main body that is provided only on one side in the thickness direction of the gasket main body, and that the gasket main body is detachably attached to the second surface of the lid main body. and an adhesive layer for fixing , and the adhesive layer has weak adhesiveness and has a peel adhesion strength of 2.0N to 8.0N as measured in accordance with JIS K6854-2. Features.

By having the seal structure and lid member according to the present invention configured as described above, it is possible to simplify the structure while improving the ease of assembly.

(a) and (b) schematically show an example of a gasket according to an embodiment of the present invention and an example of a seal structure using the same, and (a) is an example of a lid member to which the gasket is fixed. (b) is a schematic perspective view schematically showing an example of the same seal structure, and (b) is a partially cutaway schematic longitudinal sectional view taken along the line X--X in (a). It is a partially broken schematic exploded longitudinal sectional view corresponding to FIG. 1(b).

Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 are diagrams schematically showing an example of a gasket according to the present embodiment, a seal structure using the gasket, and a lid member used in the seal structure.
As shown in FIG. 2, the gasket 15 according to the present embodiment is sandwiched between a first surface 6 and a second surface 12, which are flat and annular and face each other. . Furthermore, the lid member 1 according to the present embodiment includes the gasket 15 and is configured to cover the opening 8 provided in the attached member 3 in an openable and closable manner. Further, the seal structure according to the present embodiment is configured to seal the periphery (opening periphery) 5 of the opening 8 of the attached member 3 and the lid member 1 that covers the opening 8 so as to be openable and closable.

The opening 8 of the attached member 3 may be an opening 8 for inspection or repair. Examples of the mounted member 3 provided with such an opening 8 include vehicles, electrical equipment, and various mechanical equipment. Further, the attached member 3 may be shaped like a box or case, or may be shaped like a cover that partitions a space in which various devices and the like are housed.
In this embodiment, as shown in FIG. 2, the opening peripheral edge 5 that is provided around the entire circumference of the opening 8 and partitions the opening 8 extends from the flat plate part 4 to one side in the thickness direction of the flat plate part 4. It is provided so as to be continuous with the inner circumferential side of the peripheral wall portion 4a, which is provided so as to rise toward the outer circumferential wall portion 4a. The surface of this opening peripheral portion 5 facing one side in the thickness direction (the lid member 1 side) constitutes a first surface 6 . Note that the opening peripheral edge 5 is not limited to one provided on the inner peripheral side of the flat plate part 4 via the peripheral wall 4a, but may be provided in the shape of a flange around the opening 8, and other , various configurations may be used.

Further, the attached member 3 is provided with a female threaded hole 7 into which a bolt (male thread) serving as a fastening member 2 for attaching the lid member 1 to the attached member 3 is screwed. This female threaded hole 7 is provided so as to open at the first surface 6 of the opening peripheral portion 5 . Further, the female threaded holes 7 are provided at a plurality of locations in the opening peripheral portion 5 at intervals in the circumferential direction. The illustrated example shows an example in which a female screw hole 7 is provided at a portion of the opening peripheral portion 5 that integrally projects in a boss shape toward a side different from the first surface 6. It is not limited to the aspect. Further, in the illustrated example, the female threaded hole 7 is shown as a hole with a bottom, but it may be formed as a through hole.

The seal structure according to the present embodiment includes a first surface 6 of the opening periphery 5 and a flat second surface 12 provided on the periphery 11 of the lid member 1 facing the first surface 6. A gasket main body 16 that is sheet-like and annular and contains fibers and has compressibility, and an adhesive layer 19 that removably fixes the gasket main body 16 to the first surface 6 or the second surface 12 are provided. The structure is said to be With this configuration, since the gasket main body 16 is in the form of a compressible sheet containing fibers, it is possible to reduce the cost compared to, for example, a metal gasket with beads, etc. Moreover, compared to those made of rubber or the like, it has a certain degree of shape retention, and can improve ease of assembly.

Further, according to the above configuration, the gasket main body portion 16 is removably fixed to the first surface 6 or the second surface 12 via the adhesive layer 19. Thereby, the gasket main body 16 can be easily fixed to the first surface 6 or the second surface 12, and the lid member 1 can be attached to the attached member 3 in this fixed state. It is possible to improve the ease of assembly. For example, if the gasket 15 is a separate body, a boss-like protrusion may be provided on the attached member 3 to prevent the gasket 15 from falling off or to position it before the lid member 1 is attached to the opening peripheral edge 5. It is also conceivable that the gasket 15 and the lid member 1 (the lid body 10 to be described later) be provided with holes through which the projections are inserted. According to the above configuration, there is no need to provide such projections or holes, and there is no need to provide a seal groove or provide a separate member on the cover in addition to the cover body to hold the gasket 15. The structure can be simplified. Furthermore, even if the gasket 15 (gasket main body portion 16) deteriorates, it can be easily replaced.

In this embodiment, the adhesive layer 19 is interposed between the lid body 10 and the gasket body portion 16 that constitute the lid member 1. With this configuration, the gasket main body 16 is fixed to the lid member 1 side via the adhesive layer 19, so the gasket main body 16 does not fall off when the lid member 1 is opened and closed. The cover member 1 can be easily attached to and detached from the attached member 3 without any problems. Furthermore, if the gasket main body 16 is fixed to the opening peripheral edge 5 side, the gasket main body 16 may get in the way or come into contact with the gasket main body 16 when the lid member 1 is opened for maintenance work. However, with the above configuration, there is no such concern.

The lid main body 10 has a larger diameter than the opening 8 so as to cover the opening 8 of the attached member 3. On the back side of the peripheral edge 11 of the lid main body 10, there is a flat second surface 12 that faces the first surface 6 of the opening peripheral edge 5 when the lid member 1 is attached to the attached member 3. It is provided. Further, the peripheral portion 11 is provided with an insertion hole 13 through which the shaft portion of the fastening member 2 is inserted, at a position corresponding to the female screw hole 7 described above. As shown in FIG. 1(a), the insertion holes 13 are provided at a plurality of locations (eight locations in the illustrated example) at intervals in the circumferential direction of the peripheral portion 11. Furthermore, a peripheral wall portion 14 that protrudes from the outer peripheral end toward the attached member 3 is provided over the entire circumference of the peripheral edge portion 11 . This peripheral wall portion 14 is disposed so as to cover the outer circumferential side of the peripheral wall portion 4a of the attached member 3 when the lid member 1 is attached to the attached member 3. Further, the illustrated example shows an example in which a flat plate-like portion 10b is provided on the inner peripheral side of the peripheral edge portion 11 via a raised portion 10a that is provided so as to rise from the peripheral edge portion 11 toward one side in the thickness direction. There is. Note that the lid main body 10 is not limited to such a shape, and may have various other shapes. Further, the lid main body 10 may be made of metal such as a sheet metal, or may be a synthetic resin molded product.

The gasket main body 16 has an annular shape corresponding to the peripheral edge 11 of the lid main body 10. This gasket main body part 16 is formed into a sheet-like shape whose thickness direction is along the opposing direction of the first surface 6 and the second surface 12 which are opposed to each other when the lid member 1 is attached to the attached member 3. has been done. This gasket main body portion 16 is provided with a gasket opening 18 corresponding to the opening 8 of the attached member 3 . The gasket opening 18 may have approximately the same diameter as the opening 8 of the attached member 3 or may have a slightly larger diameter than the opening 8. Note that the illustrated example shows an example in which the gasket opening 18 of the gasket main body 16 has a substantially rectangular shape with concave curved corners in accordance with the shape of the opening 8 of the attached member 3. Depending on the shape of the opening 8 of the attached member 3, it may be provided with a radially protruding portion or a recessed portion in the middle of the circumferential direction, or may have various other shapes. Good too.

Further, the outer diameter of the gasket main body 16 is smaller than the inner diameter of the peripheral wall 14 of the lid main body 10. The outer diameter of the gasket main body 16 is set appropriately so that a substantially uniform gap is formed over the entire circumference between the outer peripheral end surface of the gasket main body 16 and the inner peripheral surface of the peripheral wall 14 of the lid main body 10. The diameter may be set to . In the illustrated example, the outer shape of the gasket main body 16 corresponds to the inner peripheral shape of the peripheral wall 14 of the lid main body 10, and the four corners are formed into a substantially rectangular shape. Depending on the shape of the inner periphery of the peripheral wall portion 14, a radially protruding portion, a recessed portion, etc. may be provided in the middle of the circumferential direction. The protruding portion or the recessed portion may serve as a guide or positioning guide for positioning when attaching the gasket main body portion 16 to the lid main body 10.
Further, the thickness of this gasket body portion 16 may be approximately 0.2 mm to 1.0 mm.
Further, this gasket body portion 16 is provided with an insertion hole 17 through which the shaft portion of the fastening member 2 is inserted, at a position corresponding to the insertion hole 13 of the lid body 10.

Further, this gasket main body portion 16 is made of a compressible fiber gasket. Such a gasket main body 16 may be any one of an oil sheet, a joint sheet, and a beater sheet. With such a configuration, since the main material of the gasket main body 16 is a fibrous material, it is easier to dispose of the gasket than a metal gasket or the like, and the retention of the adhesive layer 19 can be improved. The oil sheet may be made of paper made of kraft pulp as a main raw material, impregnated with a binder and various additives, and coated with an appropriate coating agent. The joint sheet may be formed into a sheet after mixing synthetic fibers such as polyamide fibers, rubber, glass fibers, expanded graphite, etc. The beater sheet may be one in which synthetic rubber or the like is added to fibers made into a slurry by a beater and formed into a sheet by a wet machine. Note that the gasket main body 16 may be one in which a resin film or the like is laminated on any one of the oil sheet, joint sheet, and beater sheet, or may have a multilayer structure of three or more layers. It may also be one that has been

In this embodiment, the adhesive layer 19 is provided on one side in the thickness direction of the gasket body 16 (the lid body 10 side). In other words, the gasket 15 includes a gasket main body 16 and an adhesive layer 19 provided on one side in the thickness direction of the gasket main body 16 to removably fix the gasket 15 to the lid main body 10. There is. With such a configuration, compared to a structure in which the adhesive layer 19 is provided on the side of the lid body 10, even when the gasket 15 is replaced frequently, the adhesive strength decreases due to deterioration of the adhesive layer 19 and the adhesive The need to re-form the layer 19 is less likely to occur, the gasket 15 can be stably fixed to the lid body 10, and the gasket 15 can be easily replaced.

The adhesive layer 19 may include an acrylic or urethane adhesive. Further, the adhesive layer 19 may be formed on the gasket body 16 by applying an adhesive diluted with an appropriate solvent by spraying, brushing, or the like. Further, the adhesive layer 19 may be provided partially on one side in the thickness direction of the gasket main body portion 16, but preferably, it may be provided over almost the entire surface. Further, the thickness (film thickness) of this adhesive layer 19 may be any appropriate thickness so that the gasket 15 can be fixed to the lid main body 10.
Further, this adhesive layer 19 has weak adhesiveness in this embodiment. With this configuration, the gasket 15 can be easily removed when replacing it, and the adhesive layer 19 is less likely to remain on the second surface 12, which is the surface to be fixed. This adhesive layer 19 may have weak adhesiveness and reappliability. With such a configuration, even if there is a positional shift or the like when the gasket 15 is pasted, it becomes possible to re-stick it.

This adhesive layer 19 has enough adhesiveness to prevent the gasket 15 from falling unintentionally while the gasket 15 is fixed to the lid body 10, and to allow the gasket 15 to be easily removed from the lid body 10. Good to have. Such an adhesive layer 19 may have a peel adhesion strength of about 2.0N to 8.0N, preferably about 2.5N to 6.0N, as measured in accordance with JIS K6854-2. It may also be from.

Further, the gasket 15 may be provided with a release sheet 9 such as a release paper or a release film that covers and protects the adhesive layer 19. With such a configuration, it is possible to suppress dust and the like from adhering to the adhesive layer 19 before the gasket 15 is attached to the member 3 to be attached. When attaching this gasket 15 to the lid body 10, the release sheet 9 may be peeled off, and the adhesive layer 19 may be attached to the second surface 12 of the lid body 10 in contact with it.
Moreover, if the lid main body 10 with the gasket 15 attached in this way is attached to the attached member 3 and fastened by the fastening member 2, the first surface 6 of the attached member 3 and the second surface 12 of the lid main body 10 will be connected. A gasket 15 is interposed so as to be sandwiched therebetween, and can seal the opening peripheral part 5 of the attached member 3 and the peripheral part 11 of the lid main body 10.

Note that in the above example, the gasket 15 is used in a sealing structure that seals the lid member 1 that covers the opening 8 for inspection or repair of the attached member 3 and the attached member 3; The gasket 15 may also be used in a sealing structure for sealing various members together. Moreover, although the above-mentioned example shows an example in which the gasket 15 is provided on the lid member 1, the gasket 15 alone may be used in various locations. Furthermore, in the above example, the adhesive layer 19 is provided on one side in the thickness direction of the gasket body 16, but the adhesive layer 19 is provided on the second surface 12 of the lid body 10 and the first surface 6 of the attached member 3. It is also possible to have a structure in which an adhesive layer 19 is provided on one of them.

1 Lid member 10 Lid main body 11 Periphery 12 Second surface 15 Gasket 16 Gasket main body 19 Adhesive layer 3 Mounted member 5 Opening periphery (around the opening)
6 First side 8 Opening

Claims (6)

A sealing structure that seals the periphery of an opening provided in an attached member and a lid member that covers the opening in an openable and closable manner,
A first surface and a second surface in the form of flat surfaces facing each other are provided around the opening and on the peripheral edge of the lid member facing the opening, and between the first surface and the second surface, a flat surface is provided. , a gasket main body portion which is sheet-like and annular and has compressibility and contains fibers is provided , and the first surface provided at the peripheral edge of the lid member is provided only on one side in the thickness direction of the gasket main body portion. Alternatively, an adhesive layer is provided to removably fix the gasket body to the second surface, and the adhesive layer has weak adhesiveness and has a peel adhesion strength measured in accordance with JIS K6854-2. A seal structure characterized by a strength of 2.0N to 8.0N . In claim 1 ,
The seal structure is characterized in that the gasket main body is any one of an oil sheet, a joint sheet, and a beater sheet. In claim 1 or 2 ,
A seal structure characterized in that the opening of the attached member is an opening for inspection or repair. A lid member that freely opens and closes an opening provided in an attached member,
a lid body having a flat second surface opposite to a flat first surface surrounding the opening of the attached member; a sheet-like , annular gasket body portion that is arranged between the gasket body portion and the gasket body portion that is compressible and contains fibers ; an adhesive layer that removably fixes the gasket main body to two surfaces ,
The lid member is characterized in that the adhesive layer has weak adhesiveness and has a peel adhesion strength of 2.0N to 8.0N as measured in accordance with JIS K6854-2 . In claim 4 ,
The lid member is characterized in that the gasket main body is any one of an oil sheet, a joint sheet, and a beater sheet. In claim 4 or 5 ,
The lid member is characterized in that the opening of the attached member is an opening for inspection or repair.

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