Gasket

Abstract

Conventional pads have a problem that an adhesive material is easily extruded outward from a region between abutting surfaces of divided pieces. According to one aspect of the present invention, a gasket is obtained by abutting a plurality of divided pieces and bonding the divided pieces with an adhesive material, and at least one of the abutting surfaces of the divided pieces has a shape in which the midway portion of the divided pieces in the thickness direction is depressed from both end portions of the divided pieces in the thickness direction.

Description

Technical Field

[0001] This disclosure relates to pads. Background Technology

[0002] As a conventional gasket, gaskets are known to consist of multiple segmented pieces joined together and bonded together with an adhesive material (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1 Japanese Patent Application Publication No. 2007-16812 (paragraph

[0016] ) Figure 1 wait) Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] In the aforementioned conventional gaskets, there is a problem that the adhesive material tends to be squeezed outwards from the area between the mating surfaces of the segments.

[0008] Methods for solving problems

[0009] One aspect of the invention is a gasket formed by joining multiple segments together and bonding them with an adhesive material, wherein at least one of the mating surfaces of the segments forms a shape in which the middle portion of the segment in the thickness direction is recessed compared to the two ends of the segment in the thickness direction. Attached Figure Description

[0010] Figure 1 This is a top view of the pad according to the first embodiment.

[0011] Figure 2 It is a three-dimensional image of a pair of interlocking segments.

[0012] Figure 3 It is a side sectional view of a gasket that seals between a pair of components.

[0013] Figure 4 of Figure 4 A is an enlarged top view of the vicinity of the mating surface of a pair of interlocking and bonded segments; Figure 4 of Figure 4 B is an enlarged stereoscopic view of the area near the mating surface of a pair of interlocking and bonded segments.

[0014] Figure 5 of Figure 5 A is along Figure 4 A sectional view of line AA in A; Figure 5 of Figure 5 B is along Figure 4 A sectional view of line BB in A; Figure 5 of Figure 5 C is along Figure 5 A sectional view of line CC in A.

[0015] Figure 6 It is a top view of a sheet of material that has been punched into multiple segments.

[0016] Figure 7 It is a top view of multiple segments that are connected to each other and arranged in a ring.

[0017] Figure 8 of Figure 8 A is a top view of the interlocking segments; Figure 8 of Figure 8 B is a side view of the interlocking segments.

[0018] Figure 9 of Figure 9 A is a top view of the interlocking segments; Figure 9 of Figure 9 B is a side view of the interlocking segments.

[0019] Figure 10 of Figure 10 A is a top view of the adhesive material injected into the adhesive material receiving hole; Figure 10 of Figure 10 B is along Figure 10 A sectional view of line DD in A.

[0020] Figure 11 of Figure 11 A is a top view of the adhesive material pressed onto the board; Figure 11 of Figure 11 B is along Figure 11 A sectional view of the EE line in A.

[0021] Figure 12 This is a top view of the pad in other embodiments.

[0022] Figure 13 This is a top view of a sheet of material into which multiple segments of a liner for other embodiments are punched out.

[0023] Figure 14 of Figure 14 A is a top view of the interlocking segments in a conventional padding; Figure 14 of Figure 14 B is a side view of the interlocking segments in a conventional padding.

[0024] Figure 15 This is a side cross-sectional view of the adhesive material that is squeezed outwards when the segmented pieces of the previous liner are joined together. Detailed Implementation

[0025] [First Implementation]

[0026] like Figure 1 As shown, the gasket 10 is formed by joining multiple segmented pieces 20 together and bonding them with adhesive material 30. In this embodiment, the gasket 10 is frame-shaped (e.g., a rectangular frame), for example as shown... Figure 2 As shown, the pad is formed by the ends of a first segment 20S (straight line from top view) and a second segment 20U (U-shaped from top view) abutting and joining together.

[0027] For example, such as Figure 3 As shown, the gasket 10 is a component (including, for example, a component referred to as a shim) that seals between a pair of interconnecting members 91 of the article 90. The article 90 to which the gasket 10 is used is not limited to a specific article; for example, it can be a housing (e.g., a battery housing that houses a battery) or a pipe. Examples of battery housings to which the gasket 10 is used include, for example, battery housings used in vehicles (e.g., electric motor vehicles). The shape of the gasket 10 is not limited to a specific shape, as long as it matches the shape of the article 90 (e.g., it can also be annular).

[0028] Examples of the separator 20 include elastomers such as rubber and elastomers. The separator 20 can also be a foamed resin such as silicone foam (foamed silicone).

[0029] The adhesive material 30 is not limited to a specific material; for example, it can be a thermosetting adhesive or a thermoplastic adhesive. Furthermore, the adhesive material 30 can be, for example, a moisture-curing adhesive, an anaerobic-curing adhesive, or a UV-curing adhesive. For the adhesive material 30, it is acceptable to select an adhesive material with good adhesion to the segment 20. For example, if the segment 20 is an organic foam, it is preferable to use a silicone-based adhesive material for the adhesive material 30.

[0030] like Figure 2 and Figure 4 As shown, one of the two interlocking segments 20 (in this embodiment, the first segment 20S) has an engaging protrusion 21 that protrudes toward the other segment 20 (in this embodiment, the second segment 20U). Additionally, the other segment 20 has an engaging recess 22 for engaging the engaging protrusion 21.

[0031] In this embodiment, the engaging protrusion 21 is rectangular, and the engaging recess 22 is also rectangular. It should be noted that the shapes of the engaging protrusion 21 and engaging recess 22 are not limited to these shapes and can be other shapes. For example, the engaging protrusion 21 may be narrower towards its protruding front end (e.g., trapezoidal shape from top view, triangular shape from top view), and the engaging recess 22 may be narrower towards its inward side. Alternatively, the engaging protrusion 21 may be wider towards its protruding front end, and the engaging recess 22 may be wider towards its inward side. In this case, the engaging protrusion 21 of one of the mating segments 20 is inserted into the engaging recess 22 of the other segment 20 from the thickness direction of the segment 20. It should be noted that the engaging protrusion 21 and engaging recess 22 can be circular or semi-circular when viewed from above.

[0032] In the gasket 10 of this embodiment, a hole penetrating the gasket 10 in the thickness direction is formed between the mating surfaces 20M (end faces of the segmented pieces 20 in this embodiment) where the segmented pieces 20 abut against each other. This hole becomes an adhesive material receiving hole 29, which is surrounded laterally by the two segmented pieces 20 and filled internally with adhesive material 30 (see reference). Figure 4 A).

[0033] In this embodiment, the front end of the engaging protrusion 21 and the inner part of the engaging recess 22 form an adhesive material receiving hole 29. That is, the protrusion of the engaging protrusion 21 is smaller than the depth of the engaging recess 22, thereby widening the spacing between the dividing pieces 20 between the front end of the engaging protrusion 21 and the inner part of the engaging recess 22.

[0034] like Figure 5 As shown in Figure A, in the gasket 10 of this embodiment, at least one of the mating surfaces 20M of the dividing pieces 20 is recessed in the middle portion of the dividing piece 20 in the thickness direction than at both ends of the dividing piece 20. Therefore, the spacing between the dividing pieces 20 is wider at the middle portion of the dividing piece 20 in the thickness direction than at both ends. In this embodiment, two of the mating surfaces 20M of the dividing pieces 20 are recessed, but it is also possible that only one of the mating surfaces 20M is recessed.

[0035] The aforementioned recess shape is also provided on the mating surface 20M located on the outer side of the engagement protrusion 21 and engagement recess 22 in the width direction of the dividing piece 20 (see reference). Figure 4 B and Figure 8B). In the aforementioned outer portion, the two ends of the segmented pieces 20 abut each other in the thickness direction; on the other hand, the spacing between the segmented pieces 20 widens in the middle portion to form an internal space (see reference). Figure 9 B). This space is separated from the external space in the thickness direction of the segment 20 by the two ends of the segment 20 in the thickness direction of each other.

[0036] like Figure 5 As shown in Figure B, in this embodiment, the side surface of the engaging protrusion 21 also has the aforementioned recessed shape. Furthermore, in this embodiment, the side surface of the inner surface of the engaging recess 22 also has the aforementioned recessed shape. Thus, between the mating surfaces 20M of the dividing pieces 20, a tunnel-like internal space R (refer to) is formed in the thickness direction, separating from the external space in the thickness direction. This internal space is located from the adhesive material receiving hole 29 towards both ends of the dividing pieces 20 in the width direction. Figure 5 C). It should be noted that not only the mating surface 20M of the dividing piece 20 (the end face in this embodiment), but also at least one of the surfaces (e.g., the two sides) in the width direction of the dividing piece 20 can be the above-mentioned recessed shape.

[0037] In this embodiment, the segment 20 has a skin layer 23 on both the front and back sides (see reference). Figure 5 A). Furthermore, in this embodiment, the mating surface 20M of the segment 20, which has the aforementioned recessed shape, does not have a skin layer 23 (e.g., a cut surface). Also, for example, the recessed shape formed in the segment 20 is sandwiched between the skin layers 23 on both sides, exposing the end face of the inner layer, which has a lower density than the skin layer 23. It should be noted that the segment 20 may have a skin layer 23 only on one side (the front or back), or it may not have a skin layer 23 on any side (the front or back).

[0038] Here, as Figure 14 A and Figure 14 In conventional gaskets 10V, where multiple segments 20V are joined together at their mating surfaces 20M (e.g., flat surfaces) and bonded by adhesive material 30, as shown in Figure B, there is a problem that the adhesive material 30 tends to be squeezed outward from the area between the mating surfaces of the segments 20V due to the jointing of the segments 20V (see reference). Figure 15 In particular, the adhesive material 30 is easily extruded in the thickness direction of the segment 20V. If the adhesive material 30 is extruded in this way, the pair of members 91 are sandwiched together in the thickness direction of the segment 20 (see reference). Figure 3 There is a risk of reduced sealing in the gasket between the 10V and the gasket between the 10V.

[0039] In contrast, in the gasket 10 of this embodiment, at least one of the mating surfaces 20M of the segment pieces 20 is recessed in the middle portion of the segment piece 20 in the thickness direction than in the two sides of the segment piece 20 in the thickness direction. Therefore, the adhesive material 30 can be contained inside the recessed portion, and the extrusion of the adhesive material 30 when the segment pieces 20 are mated together can be suppressed. Moreover, in the example of this embodiment, since both sides of the mating surfaces 20M of the segment pieces 20 are in the above-mentioned recessed shape, the extrusion of the adhesive material 30 can be further suppressed. As a result, the reduction of the sealing performance of the gasket 10 can be suppressed, and the deterioration of the appearance of the gasket 10 can also be suppressed.

[0040] Furthermore, in the gasket 10 of this embodiment, an adhesive material receiving hole 29 is formed between the mating surfaces 20M of the segment pieces 20, extending through the gasket 10 in the thickness direction and accommodating the adhesive material 30. Therefore, the adhesive material 30 can be accommodated in the adhesive material receiving hole 29, preventing the adhesive material 30 from being extruded from the area between the mating surfaces 20M of the segment pieces 20. This helps to suppress a decrease in the sealing performance of the gasket 10 and also prevents a deterioration in the appearance of the gasket 10.

[0041] The gasket 10 in this embodiment is manufactured, for example, in the following manner. Figure 6 As shown, for example, a sheet 40 made of elastomer is punched using a Thomson cutter or a Picknell cutter to form multiple segmented pieces 20. The segmented pieces 20 are shaped to have engaging protrusions 21 and engaging recesses 22. It should be noted that if a frame-shaped pad is punched out of the sheet 40, the inner portion of the frame-shaped pad in the sheet 40 is discarded. However, by punching out multiple segmented pieces 20 and joining them together to form the pad 10, the discarded portion of the sheet 40 can be reduced.

[0042] The shape of the aforementioned recess on the mating surface 20M of the dividing piece 20 can be formed by cutting or shearing based on the punching process, or by cutting or grinding after the punching process.

[0043] Next, as Figure 7 As shown, multiple segmented pieces 20 are joined together and arranged in a ring. Specifically, as from... Figure 8 A and Figure 8 B direction Figure 9 A and Figure 9As shown in variation B, one segment 20 is mated with another segment 20 by engaging the protrusion 21 with the recess 22. In this case, under the pressure of mating, the mating surface 20M of the segment 20 deforms, and the segment 20 is mated with each other in a way that the shape of the recess does not disappear, that is, in a way that does not become a press-fit. Then, the ends of the segment 20 in the width direction abut each other, and on the other hand, in the middle part of the width direction of the segment 20, an adhesive material receiving hole 29 is formed between the segment 20 (specifically, between the front end of the engagement protrusion 21 and the inner part of the engagement recess 22).

[0044] Next, as Figure 10 A and Figure 10 As shown in Figure B, adhesive material 30 is injected into the adhesive material receiving hole 29. Then, as... Figure 11 A and Figure 11 As shown in Figure B, the adhesive material 30 is pressed down in the vertical direction using, for example, a sheet material 50. The adhesive material 30 then fills the interior of the adhesive material receiving hole 29 and also flows into the recessed shape of the mating surfaces 20M of the segment pieces 20, i.e., the tunnel-like internal space R. By allowing the adhesive material 30 to flow into the tunnel-like internal space R, it is possible to prevent the adhesive material 30 from being extruded from the adhesive material receiving hole 29, suppress extrusion in the thickness direction, and ensure that the adhesive material 30 is distributed between the segment pieces 20. Then, when the adhesive material 30 cures, the segment pieces 20 are bonded together to form a gasket 10. It should be noted that the segment pieces 20 can also be joined together after the adhesive material 20 is applied to the mating surfaces 20M of at least one of the segment pieces 20.

[0045] As described above, in this embodiment, portions of the dividing pieces 20 that contain adhesive material 30 (the inner portion of the recessed shape and the adhesive material receiving hole 29) are provided between each other. Therefore, by adjusting the amount of adhesive material 30, it is possible to suppress the extrusion of adhesive material 30.

[0046] [Other Implementation Methods]

[0047] In the above embodiments, the engaging protrusions 21 may not be provided on the mating segments 20. In this case, for example, as long as one of the segments 20 has an engaging recess 22, an adhesive material receiving hole 29 can be formed between the mating surfaces 20M of these segments 20. Alternatively, the segments 20 may have opposing engaging recesses 22 on both sides, and the adhesive material receiving hole 29 may be formed between the engaging recesses 22. It should be noted that in the above embodiments, as long as the segments 20 have a shape in which the middle portion in the thickness direction is recessed compared to the two ends in the thickness direction, the shape in which the adhesive material receiving hole 29 is not formed may also be (for example, it may not have a recess like the engaging recess 22). In addition, in the above embodiments, as long as the segments 20 have a recess forming the adhesive material receiving hole 29 (e.g., engaging recess 22), the shape in which the middle portion in the thickness direction is recessed compared to the two ends in the thickness direction may not be.

[0048] The shapes of the plurality of segmented pieces 20 constituting the pad 10 are not limited to the shapes described in the above embodiment. For example, such as Figure 12 As shown, the plurality of segmented pieces 20 constituting the pad 10 can all be in a straight line (strip shape) when viewed from above. In this structure, for example, one of the mating surfaces 20M of the segmented pieces 20 is formed on the end face of the long side of one segmented piece 20, and the other mating surface 20M is formed on the side face of the other segmented piece 20 in the width direction. It should be noted that in this structure, it is sufficient to form the plurality of segmented pieces 20 by punching from the sheet 40, for example, arranging them in the short side direction (see reference). Figure 13 ).

[0049] <Postscript>

[0050] Hereinafter, the feature groups extracted from the above embodiments will be explained as needed, while showing the effects, etc.

[0051] For example, the following feature group of this disclosure relates to gaskets, which can be considered as addressing "as conventional gaskets, it is known that a gasket consists of multiple segmented pieces joined together and bonded by an adhesive material (for example, see Japanese Patent Application Laid-Open No. 2007-16812 (paragraph

[0016] )..." Figure 1 The background technology, such as "etc.", was conceived with the problem that "in the aforementioned conventional gaskets, there is a problem that the adhesive material is easily squeezed outward from the area between the mating surfaces of the segments." In addition, new gaskets and new technologies related to gaskets have been sought for a long time.

[0052] [Feature 1]

[0053] A gasket comprising multiple segmented pieces joined together and bonded together with an adhesive material, wherein,

[0054] At least one of the mating surfaces of the segments is such that the middle portion of the segment in the thickness direction is recessed compared to the two ends of the segment in the thickness direction.

[0055] [Feature 2]

[0056] According to feature 1, the padding, wherein,

[0057] The plurality of segmented pieces are foamed resin bodies having a skin layer on both the front and back sides but not having a skin layer on the mating surface of the recessed shape.

[0058] [Feature 3]

[0059] According to feature 1 or 2, the padding, wherein,

[0060] The two sides of the mating surfaces of the segmented pieces form the concave shape.

[0061] [Feature 4]

[0062] According to feature 1, the padding, wherein,

[0063] The gasket has an adhesive material receiving hole that extends through the gasket in the thickness direction, is surrounded laterally by two mating segments, and is filled with the adhesive material.

[0064] [Feature 5]

[0065] A gasket, which is formed by joining multiple segments together and bonding them with an adhesive material, wherein,

[0066] The gasket has an adhesive material receiving hole that extends through the gasket in the thickness direction, is surrounded laterally by two mating segments, and is filled with the adhesive material.

[0067] [Feature 6]

[0068] According to feature 4 or 5, the liner wherein

[0069] The gasket has: an engaging protrusion formed on one of the two segmented pieces and protruding toward the other segmented piece; and an engaging recess formed on the other segmented piece, for the engaging protrusion to engage with it.

[0070] The front end of the engaging protrusion and the inner part of the engaging recess form a receiving hole for the adhesive material.

[0071] Based on the above features, it is possible to suppress the adhesive material from being extruded outward from the area between the mating surfaces of the segments.

[0072] It should be noted that specific examples of the technology contained in the technical solution of this application are disclosed in this specification and drawings, but the technology described in the technical solution of this application is not limited to these specific examples, and also includes solutions obtained by various modifications and alterations to the specific examples, as well as solutions obtained by taking a part of the specific examples separately.

[0073] Explanation of reference numerals in the attached figures

[0074] 10 Padding

[0075] 20 segments

[0076] 20M docking surface

[0077] 20s First Segment

[0078] 20U Second Segment

[0079] 21. The clasping protuberance

[0080] 22 engagement recess

[0081] 23 Cortex

[0082] 29 Adhesive material receiving hole

[0083] 30. Adhesive materials.

Claims

1. A gasket comprising a plurality of segmented pieces joined together and bonded together by an adhesive material, wherein, At least one of the mating surfaces of the segments is such that the middle portion of the segment in the thickness direction is recessed compared to the two ends of the segment in the thickness direction.

2. The gasket according to claim 1, wherein, The plurality of segmented pieces are foamed resin bodies having a skin layer on both the front and back sides but not having a skin layer on the mating surface of the recessed shape.

3. The gasket according to claim 1 or 2, wherein, The two sides of the mating surfaces of the segmented pieces form the concave shape.

4. The gasket according to claim 1, wherein, The gasket has an adhesive material receiving hole that extends through the gasket in the thickness direction, is surrounded laterally by two mating segments, and is filled with the adhesive material.

5. A gasket comprising a plurality of segmented pieces joined together and bonded together by an adhesive material, wherein, The gasket has an adhesive material receiving hole that extends through the gasket in the thickness direction, is surrounded laterally by two mating segments, and is filled with the adhesive material.

6. The gasket according to claim 4 or 5, wherein, The gasket has: an engaging protrusion formed on one of the two segmented pieces and protruding toward the other segmented piece; and an engaging recess formed on the other segmented piece, for the engaging protrusion to engage with it. The front end of the engaging protrusion and the inner part of the engaging recess form a receiving hole for the adhesive material.

Images