WO2023002985A1 - ガスケット - Google Patents
ガスケット Download PDFInfo
- Publication number
- WO2023002985A1 WO2023002985A1 PCT/JP2022/028062 JP2022028062W WO2023002985A1 WO 2023002985 A1 WO2023002985 A1 WO 2023002985A1 JP 2022028062 W JP2022028062 W JP 2022028062W WO 2023002985 A1 WO2023002985 A1 WO 2023002985A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gasket
- seal lip
- straight line
- connecting portion
- cross
- Prior art date
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- 238000007789 sealing Methods 0.000 abstract description 33
- 230000002093 peripheral effect Effects 0.000 description 46
- 230000000694 effects Effects 0.000 description 4
- 230000001747 exhibiting effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/104—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure
- F16J15/106—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing characterised by structure homogeneous
Definitions
- the present invention relates to gaskets.
- a gasket has been used as a sealing device to seal a gap between a plurality of members fixed to each other such as a housing and a cover or a tube and a tube to form a sealed space.
- gaskets are used to seal the space inside the battery case of fuel cell vehicles, electric vehicles, hybrid vehicles, and the like.
- Some of such conventional gaskets are mounted in annular grooves formed in each or one of the fixed members to close the gap between the members.
- Some of such gaskets have a pair of projections formed on both sides so that the gasket does not fall out of the groove when assembling the members that fix the pair of members together.
- the pair of protrusions are pressed against the side surfaces of the groove, thereby holding the gasket in the groove and thereby preventing the gasket from falling out of the groove (see, for example, Patent Document 1).
- some conventional gaskets have a structure to prevent them from falling out of the groove in which the gasket is installed. Similar to other conventional gaskets, there is a demand for a gasket having such a structure for preventing the gasket from falling off so as to have a structure capable of further improving the sealing performance.
- the present invention has been made in view of the above-mentioned problems.
- a gasket according to the present invention is a gasket that is attached to a groove that is open to a gap between members to close the gap, and that contacts opposing side surfaces of the groove.
- a protrusion that is a portion that protrudes into the gap
- a one-side seal lip portion that is a portion that is formed so as to contact one of the surfaces facing through the gap, and the other of the surfaces facing through the gap and a connecting portion connecting the one side seal lip portion and the other side seal lip portion.
- the one-side seal lip portion extends along an imaginary straight line in a cross section perpendicular to the extending direction of the gasket, and the one-side seal lip portion has a pair of one-side seal lips extending side by side between the protrusions at the connecting portion.
- the other side seal lip portion has a pair of other side seal lips extending side by side between the protrusions at the connection portion, each of the one side seal lips being tapered, Each of the other side seal lips is tapered.
- the side surfaces of the one-side seal lips facing each other are inclined with respect to the imaginary straight line in the cross section, and the side surfaces of the other-side seal lips are opposite to each other.
- the facing side is inclined with respect to the imaginary straight line in the cross section.
- the projecting portion is formed on the connecting portion.
- the protrusion protrudes in the direction of the imaginary straight line in the cross section.
- the connecting portion has a shape in which the imaginary straight line is the center line in the cross section.
- the one side seal lip portion and the other side seal lip portion are symmetrical with respect to the imaginary straight line in the cross section.
- each of the protrusions has a shape in which the imaginary straight line is the center line in the cross section.
- the gasket according to the present invention it is possible to improve the sealing performance.
- FIG. 1 is a plan view of a gasket according to an embodiment of the invention
- FIG. FIG. 2 is a cross-sectional view showing a cross section of the gasket shown in FIG. 1 taken along the line AA.
- FIG. 11 shows the gasket attached to the groove of the case;
- FIG. 10 shows the gasket in use with the cover attached to the case and closing the gap between the case and the cover.
- FIG. 4 is a cross-sectional view showing a cross-section along line AA of a modification of the gasket according to the embodiment of the present invention;
- FIG. 1 is a plan view of a gasket 1 according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view showing a cross section of the gasket 1 shown in FIG. 1 taken along line AA. That is, FIG. 2 shows a cross section perpendicular to the direction in which the gasket 1 extends.
- the side (one side) in the direction of arrow a (see FIG. 2) will be referred to as the upper side
- the side (the other side) in the direction of arrow b (see FIG. 2) will be referred to as the lower side.
- the arrows a and b each extend parallel to one straight line and extend in the direction in which the space S surrounded by the gasket 1 opens in plan view.
- FIG. 2 is a cross-sectional view showing a cross section of the gasket 1 shown in FIG. 1 taken along line AA. That is, FIG. 2 shows a cross section perpendicular to the direction in which the gasket 1 extends.
- the space S side (the direction of arrow c in FIGS. 1 and 2) perpendicular to the upper and lower sides and surrounded by the gasket 1 is defined as the inner peripheral side, and the side opposite to the inner peripheral side (the direction of arrow d in FIGS. 1 and 2) side) is the outer peripheral side.
- the upper side, the lower side, and the like described above do not limit the posture of the gasket 1 in the space, and the gasket 1 can take any posture in the space.
- the gasket 1 is a gasket that is attached to a groove that opens to a gap between members to close the gap.
- the gasket 1 has protruding portions 10 and 11, which are portions protruding so as to come into contact with the mutually opposing side surfaces of the groove in which the gasket 1 is attached, and one of the opposing surfaces through the gap between the members.
- One-side seal lip portion 20 which is a formed portion
- the other-side seal lip portion 30 which is a portion formed so as to contact the other of the opposing surfaces through the gap between the members
- one-side seal A connecting portion 40 that connects the lip portion 20 and the other side seal lip portion 30 is provided.
- the connecting portion 40 extends along an imaginary straight line x in a cross section perpendicular to the extending direction of the gasket 1 .
- the one-side seal lip portion 20 has a pair of one-side seal lips 21 and 22 extending side by side between the protrusions 10 and 11 at the connecting portion 40 .
- the other side seal lip portion 30 has a pair of other side seal lips 31 and 32 extending side by side between the protrusions 10 and 11 in the connecting portion 40 .
- Each of the one side seal lips 21, 22 is tapered, and each of the other side seal lips 31, 32 is tapered.
- the one side seal lip portion 20 will be referred to as the upper seal lip portion 20, the one side seal lips 21 and 22 will be referred to as the upper seal lips 21 and 22, and the other side seal lip portion 30 will be referred to as the lower seal lip portion.
- 30 and the other side seal lips 31 and 32 are also called lower seal lips 31 and 32 .
- the gasket 1 extends annularly, and the protrusions 10 and 11, the upper seal lip portion 20, and the lower seal lip portion 30 also extend annularly.
- the gasket 1 is integrally made of a rubber-like elastic body, and the protrusions 10, 11, the upper sealing lip portion 20, and the lower sealing lip portion 30 are integral parts of the gasket 1 formed of the same material. be.
- the shape (hereinafter also simply referred to as the cross-sectional shape) of the cross section (hereinafter also simply referred to as the cross section) perpendicular to the extending direction of the gasket 1 is uniform or substantially uniform over the extending direction (over the entire circumference). has the shape of
- the cross-sectional shape of the gasket 1 is specifically as shown in FIG.
- the connecting portion 40 extends along the virtual straight line x, for example, parallel or substantially parallel to the virtual straight line x, and has a rectangular or substantially rectangular shape in cross section.
- the connecting portion 40 has a shape in which the imaginary straight line x is the center line or approximately the center line in the cross section.
- the protrusions 10 and 11 that contact the opposing side surfaces of the groove in which the gasket 1 is attached extend annularly in the direction in which the gasket 1 extends, as shown in FIG. and is formed, for example, at the connecting portion 40 .
- the protrusions 10 and 11 are formed on an inner peripheral surface 41 that faces the inner peripheral side of the connecting portion 40 and an outer peripheral surface 42 that faces the outer peripheral side of the connecting portion 40, respectively. there is That is, the projecting portion 10 protrudes from the inner peripheral surface 41 toward the inner peripheral side, and the projecting portion 11 protrudes from the outer peripheral surface 42 toward the outer peripheral side.
- the protrusions 10 and 11 have a shape that presents a curved profile in cross section.
- the cross-sectional shape of the protrusions 10 and 11 is not limited to a shape exhibiting a curved contour, and may be a shape exhibiting a contour drawn by combining straight lines, a shape exhibiting a contour drawn by combining a curve and a straight line, or other shapes. It may be in shape.
- the protrusions 10 and 11 are shaped so as to protrude inwardly and outwardly from the inner peripheral surface 41 and the outer peripheral surface 42 of the connecting portion 40, respectively, and are located on the opposing side surfaces of the groove to which the gasket 1 is attached in use. Any shape may be used as long as it is in contact.
- the projections 10 and 11 protrude, for example, in the direction of the imaginary straight line x. It is shaped so as to be approximately the center line. That is, the protrusion 10 is provided at the center or substantially the center of the inner peripheral surface 41 of the connecting portion 40 in the vertical direction, which is the direction perpendicular to the virtual straight line x, and the protrusion 11 is provided on the outer peripheral surface of the connecting portion 40. 42, it is provided at the center or approximately the center in the vertical direction, which is the direction orthogonal to the virtual straight line x.
- the positions of the protrusions 10 and 11 in the connecting portion 40 are not limited to the positions described above. Moreover, the protrusions 10 and 11 may not be provided on the inner peripheral surface 41 and the outer peripheral surface 42 of the connecting portion 40, respectively, and may be provided on the upper seal lip portion 20 or the lower seal lip portion 30. .
- an upper seal lip portion 20 is formed on the upper side of the connecting portion 40
- a lower seal lip portion 30 is formed on the lower side of the connecting portion 40 .
- the boundary between the upper seal lip portion 20 and the connecting portion 40 and the boundary between the lower seal lip portion 30 and the connecting portion 40 are indicated by two-dot chain lines.
- the upper seal lip portion 20 has a pair of upper seal lips 21 and 22 extending side by side between the protrusions 10 and 11 at the connecting portion 40 .
- the pair of upper seal lips 21 and 22 are arranged with a gap in the direction of the virtual straight line x.
- the upper seal lips 21 and 22 extend annularly in the extending direction of the gasket 1 and extend around the entire periphery of the gasket 1 .
- the upper seal lip 21 is provided on the inner peripheral side of the upper seal lip 22 .
- each of the upper seal lips 21 and 22 has a tip end side portion (tip end portion 21a and 22a) of each of the upper seal lips 21 and 22, which faces through a gap between the members to which the gasket 1 is attached, when the gasket 1 is used, which will be described later. It is formed to contact one side (upper side).
- each of the upper sealing lips 21, 22 is tapered, and as shown in FIG. width is narrower.
- the width of the upper seal lip 21 is the distance between the inner side surface 23a and the outer side surface 23b in the direction of the virtual straight line x
- the width of the upper seal lip 22 is the distance between the inner side surface 24a and the outer side surface 24b in the direction of the virtual straight line x. is the interval between
- the inner surface 23a of the upper seal lip 21 faces the outer circumference of the upper seal lip 21, and the outer surface 23b of the upper seal lip 21 faces the inner circumference of the upper seal lip 21.
- the inner side surface 24a of the upper seal lip 22 faces the inner peripheral side of the upper seal lip 22, and the outer side surface 24b of the upper seal lip 22 faces the outer peripheral side of the upper seal lip 22.
- a distal end surface 25 is formed on the distal end portion 21 a of the upper seal lip 21 , which is a surface facing the projecting direction of the upper seal lip 21 .
- the tip surface 25 is a surface that connects the inner side surface 23a and the outer side surface 23b at the end on the tip side.
- the tip surface 25 may have other shapes such as a curve or a combination of curves and straight lines in cross section.
- the upper seal lip 21 is a seal lip protruding in a direction orthogonal or substantially orthogonal to the imaginary straight line x. As described above, the upper seal lip 21 has a tapered shape.
- the inner side surface 23a and the outer side surface 23b are inclined surfaces.
- the inner side surface 23a and the outer side surface 23b are inclined at the same angle or substantially the same angle with respect to a straight line orthogonal to the virtual straight line x.
- the inner side surface 23a and the outer side surface 23b may be inclined at different angles with respect to a straight line orthogonal to the virtual straight line x.
- the inner surface 23a may have a shape different from that shown in FIG.
- the cross-section may have other shapes that draw a curved line or a combination of curved lines and straight lines.
- the outer surface 23b may have a shape different from the shape shown in FIG. If so, the cross-section may be any other shape that draws a curved line or a combination of curved lines and straight lines.
- a tip end surface 26 that faces the direction in which the upper seal lip 22 protrudes is formed on the tip portion 22 a of the upper seal lip 22 .
- the tip surface 26 is a surface that connects the inner side surface 24a and the outer side surface 24b at the end on the tip side.
- the tip surface 26 may have other shapes such as a curve or a combination of curves and straight lines in cross-section.
- the upper seal lip 22 is a seal lip protruding in a direction orthogonal or substantially orthogonal to the imaginary straight line x. As described above, the upper seal lip 22 has a tapered shape.
- the inner side surface 24a and the outer side surface 24b are inclined surfaces.
- the inner side surface 24a and the outer side surface 24b are inclined at the same angle or substantially the same angle with respect to a straight line orthogonal to the virtual straight line x.
- the inner side surface 24a and the outer side surface 24b may be inclined at different angles with respect to a straight line perpendicular to the virtual straight line x.
- the inner surface 24a may have a shape different from the shape shown in FIG.
- the cross-section may have other shapes that draw a curved line or a combination of curved lines and straight lines.
- the outer surface 24b may have a shape different from that shown in FIG. If so, the cross-section may be any other shape that draws a curved line or a combination of curved lines and straight lines.
- the outer surface 23b of the upper seal lip 21 is connected to the surface (inner circumferential surface 41) facing the inner circumference of the connecting portion 40, and the outer surface 24b of the upper seal lip 22 is connected to a surface (outer peripheral surface 42) of the connecting portion 40 facing the outer peripheral side. Further, the inner side surface 23a of the upper seal lip 21 and the inner side surface 24a of the upper seal lip 22 face each other with a space therebetween in the direction of the imaginary straight line x.
- the gasket 1 has an annular shape defined by the inner side surface 23 a of the upper seal lip 21 , the inner side surface 24 a of the upper seal lip 22 , and the annular surface (upper side surface 43 ) facing the upper side of the connecting portion 40 .
- a recess 2 which is a space, is formed.
- the lower seal lip portion 30 has a pair of lower seal lips 31 and 32 extending side by side between the protrusions 10 and 11 at the connecting portion 40 .
- the pair of lower seal lips 31 and 32 are arranged in the direction of the imaginary straight line x with a gap therebetween.
- the lower seal lips 31, 32 extend annularly in the extending direction of the gasket 1 and extend around the entire periphery of the gasket 1.
- the lower seal lip 31 is provided on the inner peripheral side of the lower seal lip 32 .
- each of the lower seal lips 31 and 32 has a tip end side portion (tip end portion 31a and 32a) of each of the lower seal lips 31 and 32 facing each other across a gap between the members to which the gasket 1 is attached when the gasket 1 is used, which will be described later. is formed to contact the other side (lower surface) of the
- each of the lower sealing lips 31,32 is tapered and, as shown in FIG. width becomes narrower.
- the width of the lower seal lip 31 is the distance between the inner side surface 33a and the outer side surface 33b in the direction of the virtual straight line x
- the width of the lower seal lip 32 is the distance between the inner side surface 34a and the outer side surface 33b in the direction of the virtual straight line x. It is the distance between the side surfaces 34b.
- the inner surface 33a of the lower seal lip 31 faces the outer periphery of the lower seal lip 31, and the outer surface 33b of the lower seal lip 31 faces the inner periphery of the lower seal lip 31. It is a side to do.
- the inner side surface 34 a of the lower seal lip 32 faces the inner peripheral side of the lower seal lip 32
- the outer side surface 34 b of the lower seal lip 32 faces the outer peripheral side of the lower seal lip 32 . It is a side to do.
- a distal end surface 35 is formed on the distal end portion 31 a of the lower seal lip 31 , which is a surface facing the projecting direction of the lower seal lip 31 .
- the tip surface 35 is a surface that connects the inner side surface 33a and the outer side surface 33b at the end on the tip side.
- the tip surface 35 may have other shapes such as a curved line or a combination of curved lines and straight lines in cross-section.
- the lower seal lip 31 is a seal lip protruding in a direction orthogonal or substantially orthogonal to the imaginary straight line x.
- the lower seal lip 31 has a tapered shape.
- the inner side surface 33a and the outer side surface 33b are inclined surfaces.
- the inner side surface 33a and the outer side surface 33b are inclined at the same angle or substantially the same angle with respect to a straight line orthogonal to the virtual straight line x.
- the inner side surface 33a and the outer side surface 33b may be inclined at different angles with respect to a straight line orthogonal to the virtual straight line x.
- the inner surface 33a may have a shape different from that shown in FIG.
- the cross-section may be any other shape that draws a curved line or a combination of curved lines and straight lines.
- the outer surface 33b may have a shape different from the shape shown in FIG. If so, the cross section may have other shapes that draw a curved line or a combination of a curved line and a straight line.
- a distal end surface 36 is formed on the distal end portion 32 a of the lower seal lip 32 , which is a surface facing the projecting direction of the lower seal lip 32 .
- the tip surface 36 is a surface that connects the inner side surface 34a and the outer side surface 34b at the end on the tip side.
- the tip surface 36 may be of other shapes such as a curve or a combination of curves and straight lines in cross-section.
- the lower seal lip 32 is a seal lip protruding in a direction orthogonal or substantially orthogonal to the imaginary straight line x.
- the lower seal lip 32 has a tapered shape.
- the inner side surface 34a and the outer side surface 34b are inclined surfaces.
- the inner side surface 34a and the outer side surface 34b are inclined at the same angle or substantially the same angle with respect to a straight line perpendicular to the virtual straight line x.
- the inner side surface 34a and the outer side surface 34b may be inclined at different angles with respect to a straight line perpendicular to the virtual straight line x.
- the inner surface 34a may have a shape different from that shown in FIG.
- the cross-section may be any other shape that draws a curved line or a combination of curved lines and straight lines.
- the outer surface 34b may have a shape different from the shape shown in FIG. If so, the cross section may have other shapes that draw a curved line or a combination of a curved line and a straight line.
- the outer surface 33b of the lower seal lip 31 is connected to the inner peripheral surface 41 of the connecting portion 40, and the outer surface 34b of the lower seal lip 32 is connected to the outer periphery of the connecting portion 40. It connects to surface 42 .
- the inner side surface 33a of the lower seal lip 31 and the inner side surface 34a of the lower seal lip 32 face each other with a space therebetween in the direction of the imaginary straight line x.
- the gasket 1 is defined by the inner surface 33a of the lower seal lip 31, the inner surface 34a of the lower seal lip 32, and the annular surface (lower surface 44) facing the lower side of the connecting portion 40.
- the gasket 1 has the above-described configuration, and the distance from the tip surfaces 25 and 26 of the upper seal lips 21 and 22 to the bottom surface of the recess 2 (upper surface 43 of the connecting portion 40) in the direction perpendicular to the imaginary straight line x is are smaller than the distances from the tip surfaces 25, 26 of the upper seal lips 21, 22 to the protrusions 10, 11, respectively.
- the depth of the recess 2 is smaller than the depth from the tip surface 25 of the upper seal lip 21 to the protrusion 10 and smaller than the depth from the tip surface 26 of the upper seal lip 22 to the protrusion 11 .
- the distance from the tip surfaces 35, 36 of the lower seal lips 31, 32 to the bottom surface of the recess 3 is are smaller than the distances from the tip surfaces 35, 36 to the protrusions 10, 11, respectively.
- the depth of the recess 3 is smaller than the depth from the tip surface 35 of the lower seal lip 31 to the protrusion 10 and smaller than the depth from the tip surface 36 of the lower seal lip 32 to the protrusion 11.
- the upper sealing lip 21 and the upper sealing lip 22 are symmetrical or substantially symmetrical with respect to the recess 2
- the lower sealing lip 31 and the lower sealing lip 32 are symmetrical or substantially symmetrical with respect to the recess 3 .
- the upper seal lip 21 and the lower seal lip 31 are symmetrical or substantially symmetrical with respect to the connecting portion 40
- the upper seal lip 22 and the lower seal lip 32 are located at the connecting portion. It is symmetrical or nearly symmetrical with respect to 40 .
- each portion may not be symmetrical as described above.
- the cross section of the gasket 1 is symmetrical or substantially symmetrical with respect to the virtual straight line x, and is symmetrical or substantially symmetrical with respect to a straight line orthogonal to the virtual straight line x. Note that the cross section of the gasket 1 does not have to be symmetrical with respect to the virtual straight line x as described above.
- the gasket 1 is attached to the groove that opens to the gap between the members and is used to close the gap between the members.
- the gasket 1 is used, for example, between a pair of members of a case 50 and a cover 60 to seal the internal space between the members, as shown in FIGS. 3 shows the gasket 1 attached to the groove 51 of the case 50, and FIG. 4 shows the cover 60 attached to the case 50 to close the gap between the case 50 and the cover 60.
- Fig. 2 shows the gasket 1 in a closed state of use;
- the case 50 and the cover 60 are members forming a housing for a battery such as a fuel cell or a lithium ion battery, and the fuel cell or the like is housed inside the case 50 .
- a battery such as a fuel cell or a lithium ion battery
- the object to which the gasket 1 is attached is not limited to the housing of the battery.
- the object to which the gasket 1 is attached is not limited to a pair of members, and the gasket 1 is also used to close a gap between three or more members.
- an annular groove 51 is formed in the outer edge portion 52 of the case 50, and the gasket 1 is attached to this groove 51.
- the groove 51 is recessed from the upper surface 52a of the outer edge portion 52 of the case 50 and opens to the gap between the case 50 and the cover 60 as shown in FIG.
- the groove 51 has a pair of side surfaces 51a and 51b facing each other, and a bottom surface 51c extending between the side surfaces 51a and 51b.
- the side surface 51 a is a side surface located inside the case 50
- the side surface 51 b is a side surface located outside the case 50 .
- the groove 51 may be formed in the cover 60 instead of the case 50 .
- grooves may be formed in the case 50 and the cover 60 .
- the protrusions 10 and 11 are in contact with the side surfaces 51a and 51b of the groove 51, respectively. Due to the contact between the protrusions 10 and 11, the gasket 1 is held in the groove 51 of the case 50 with a predetermined force. This prevents the gasket 1 from falling out of the groove 51 .
- the protrusions 10 and 11 are formed on the inner peripheral surface 41 and the outer peripheral surface 42 of the connecting portion 40, respectively, when the gasket 1 is accommodated in the groove 51, the protrusions 10 and 11 are aligned with the protrusions 10 and 11, respectively. Compressed between the connecting portion 40 extending between and the side surfaces 51 a and 51 b of the groove 51 . Therefore, the reaction force of the protrusions 10 and 11 can be increased, the force of holding the gasket 1 in the groove 51 by the protrusions 10 and 11 can be increased, and the effect of preventing the gasket 1 from falling out of the groove 51 can be improved.
- the protrusions 10 and 11 contact the side surfaces 51a and 51b of the groove 51, respectively. Therefore, the lengths of the upper seal lips 21 and 22 in the vertical direction, the lengths of the lower seal lips 31 and 32 in the vertical direction, or the positions of the protrusions 10 and 11 on the gasket 1 in the vertical direction are , 22, or the tip surfaces 35, 36 of the lower seal lips 31, 32 are in contact with the bottom surface 51c of the groove 51, the projections 10, 11 of the groove 51 It has a length or a position that makes contact with the side surfaces 51a and 51b. 4, the lower seal lip portion 30 is accommodated in the groove 51 when the gasket 1 is used, but the upper seal lip portion 20 is accommodated within the groove 51 when the gasket 1 is used. may be accommodated.
- the lower seal lips 31 and 32 are in contact with the bottom surface 51c of the groove 51 at the tip surfaces 35 and 36, respectively, and the upper seal lips 21 and 22 are in contact with the bottom surface 51c of the groove 51 at the tip surfaces 25 and 26, respectively. It is in contact with the portion of the inner surface 60a of the facing cover 60 .
- the lower seal lips 31 and 32 are compressed between the connecting portion 40 and the bottom surface 51c of the groove 51, and the upper sealing lips 21 and 22 are compressed between the connecting portion 40 and the inner surface 60a of the cover 60. is compressed between
- the tip surfaces 25, 26 of the upper seal lips 21, 22 are pressed against the inner surface 60a of the cover 60, and the tip surfaces 35, 36 of the lower seal lips 31, 32 are in the grooves 51.
- the gasket 1 closes the gap G between the case 50 and the cover 60 and seals the space formed by the case 50 and the cover 60 .
- the upper seal lips 21 and 22 are in contact with the bottom surface 51c of the groove 51 in the same manner as the lower seal lips 31 and 32 shown in FIG.
- the lips 31, 32 contact the inner surface 60a of the cover 60 in the same manner as the upper seal lips 21, 22 shown in FIG.
- each of the upper seal lips 21 and 22 is tapered toward the tip in the extension direction, and is easily deformed in the extension direction when compressed in the extension direction in use. Therefore, when each of the upper seal lips 21 and 22 is compressed in the extension direction, it is difficult to bend (protrude) toward the inner peripheral side or the outer peripheral side. That is, each of the upper seal lips 21 and 22 is less likely to buckle when compressed in the extending direction during use. Therefore, the gasket 1 has high sealing performance.
- the upper seal lip 21 when the inner side surface 23a and the outer side surface 23b of the upper seal lip 21 are inclined at the same angle or substantially the same angle with respect to the straight line perpendicular to the imaginary straight line x as described above, the upper seal lip 21 is in use. can be made more difficult to buckle at. Similarly, if the inner surface 24a and outer surface 24b of the upper sealing lip 22 are inclined at the same angle or approximately the same angle with respect to a line perpendicular to the imaginary line x, as described above, the upper sealing lip 22 is used. It can be made less prone to buckling in a state.
- each of the lower seal lips 31 and 32 is tapered toward the distal end in the extending direction, and is easily deformed in the extending direction when compressed in the extending direction in use. ing. Therefore, when each of the lower seal lips 31 and 32 is compressed in the extension direction, it is difficult to bend and curve (protrude) toward the inner peripheral side or the outer peripheral side. That is, each of the lower seal lips 31, 32 is less likely to buckle when compressed in the extension direction in use. Therefore, the gasket 1 has high sealing performance.
- the lower seal lip 31 when the inner side surface 33a and the outer side surface 33b of the lower seal lip 31 are inclined at the same angle or substantially the same angle with respect to the straight line orthogonal to the imaginary straight line x as described above, the lower seal lip 31 is It can be made more difficult to buckle in use. Similarly, if the inner surface 34a and the outer surface 34b of the lower seal lip 32 are inclined at the same angle or substantially the same angle with respect to a straight line perpendicular to the imaginary straight line x, as described above, the lower seal lip 32 can be made less prone to buckling in use.
- each of the upper seal lips 21 and 22 is tapered and each of the lower seal lips 31 and 32 is tapered, the gasket 1 is easily compressed in the vertical direction, and the case 50 The repulsive force of the gasket 1 when attaching the cover 60 is low, making it easy to attach the cover 60 to the case 50 .
- the gasket 1 since the gasket 1 has the connecting portion 40 connecting the upper seal lip portion 20 and the lower seal lip portion 30 between the upper seal lip portion 20 and the lower seal lip portion 30, the use condition is Also, the connecting portion 40 supports the upper seal lip portion 20 and the lower seal lip portion 30 . Therefore, in use, the upper seal lips 21 and 22 are less likely to fall, and the lower seal lips 31 and 32 are less likely to fall. In this manner, the connecting portion 40 has a function of preventing the upper seal lips 21 and 22 and the lower seal lips 31 and 32 from collapsing. The buckling of the upper seal lips 21, 22 and the lower seal lips 31, 32 can also be prevented by the action of preventing the upper seal lips 21, 22 and the lower seal lips 31, 32 of the connecting portion 40 from collapsing. can. When the thickness (the width in the vertical direction) of the connecting portion 40 is large, the connecting portion 40 is more difficult to deform, and the collapse prevention effect of the seal lips 21, 22, 31, 32 can be increased.
- the gasket 1 has recesses 2 and 3, and by adjusting the areas of the recesses 2 and 3 in the cross section, it is possible to suppress the filling rate of the gasket 1 in the groove 51 from becoming excessive during use. can be done. As a result, it is possible to prevent damage such as cracking of the gasket 1 and protrusion of the gasket 1 into the gap G due to excessive compression of the gasket 1 during use.
- the cross-sectional area of the recess 2 of the gasket 1 can be easily adjusted by adjusting the length of the upper seal lips 21 and 22, and the cross-sectional area of the recess 3 of the gasket 1 can be adjusted to the length of the lower seal lips 31 and 32. It can be easily adjusted by adjusting.
- the gasket 1 since the upper seal lips 21, 22 and the lower seal lips 31, 32 protrude from the connecting portion 40, the gasket 1 easily exhibits a so-called self-sealing effect. That is, for example, when the inner side of the case 50 and the cover 60 is at high pressure, the force due to this high pressure is applied to the high pressure side surface of the gasket 1, that is, the outer surface 23b of the high pressure side upper seal lip 21 and the high pressure side lower seal lip 31. The force acts on the outer surface 33b and the inner peripheral surface 41 on the high pressure side of the connecting portion 40, and the gasket 1 receives this force and is pressed against the low pressure side.
- the connecting portion 40 is pressed against the outer peripheral side surface 51b of the groove 51, and the connecting portion 40 is compressed in the direction of the imaginary straight line x.
- the upper seal lips 21, 22 are pushed toward the inner surface 60a of the cover 60, and the lower seal lips 31, 32 are pushed toward the bottom surface 51c of the groove 51.
- the tip surfaces 25 and 26 of each are further pressed against the inner surface 60a of the cover 60, and the tip surfaces 35 and 36 of the lower seal lips 31 and 32 are further pressed against the bottom surface 51c of the groove 51. In this way, the self-sealing action of the gasket 1 is obtained.
- the gasket 1 exerts the above-described self-sealing action between the upper seal lips 21, 22 and the lower seal lips 31, 32. It can be made to work evenly. Further, when the thickness of the connecting portion 40 is large, the connecting portion 40 can be made difficult to buckle even if the connecting portion 40 receives a force from the high pressure side as described above, and the gasket 1 exhibits the self-sealing action described above. It can be made to work more reliably. However, if the connecting portion 40 is too thick, the filling rate of the gasket 1 in the groove 51 becomes excessive during use.
- the gasket 1 has the same or substantially the same cross-section along the extension direction, so the structure of the mold for molding the gasket 1 can be simplified, and the manufacturing cost of the mold can be reduced. can be reduced. Moreover, since the structure of the mold for molding the gasket 1 can be simplified, the occurrence of defects in molding the gasket 1 can be reduced.
- the present invention is not limited to the gasket 1 according to the embodiment of the present invention, and includes all aspects included in the concept and scope of the claims of the present invention. . Moreover, each configuration may be selectively combined as appropriate so as to achieve at least part of the above-described problems and effects. For example, the shape, material, arrangement, size, etc. of each component in the above embodiment may be changed as appropriate according to the specific usage of the present invention.
- the extending shape of the gasket 1 is not limited to an annular shape forming a single rectangular ring in plan view as shown in FIG. can take
- the elongated shape of the gasket 1 may be such that a series of rings are formed.
- the gasket 1 may have a plurality of projections 10 on the outer surface 23b of the upper seal lip 21, the inner peripheral surface 41 of the connecting portion 40, and the outer surface 33b of the lower seal lip 31.
- a plurality of protrusions 11 may be provided on the outer surface 24 b of the upper seal lip 22 , the outer peripheral surface 42 of the connecting portion 40 , and the outer surface 34 b of the lower seal lip 32 .
- the gasket 1 may have two projections 10 on its inner peripheral surface (outer surface 23b, inner peripheral surface 41, and outer surface 33b), and may have two projections 10 on its outer peripheral surface (outer surface 24b, outer peripheral surface 42 , and the outer surface 34b) may have two projections 11. As shown in FIG.
- the two protrusions 10 and the two protrusions 11 correspond to each other in the virtual straight line x direction.
- the number of protrusions 10 and 11 is not limited to two, and may be three or more. In this way, when a plurality of protrusions 10 are provided on the inner peripheral surface of the gasket 1 and a plurality of protrusions 11 are provided on the outer peripheral surface of the gasket 1, the posture of the gasket 1 in the groove 51 can be further stabilized. can be done.
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Abstract
Description
Claims (7)
- 部材間の隙間に開放する溝に取り付けられて前記隙間の閉塞を図るガスケットであって、
前記溝の互いに対向する側面に夫々接触するように突出する部分である突起部と、
前記隙間を介して対向する面の一方に接触するように形成されている部分である一方側シールリップ部と、
前記隙間を介して対向する面の他方に接触するように形成されている部分である他方側シールリップ部と、
前記一方側シールリップ部と前記他方側シールリップ部とを連結する部分である連結部とを備え、
前記連結部は、前記ガスケットの延び方向に直交する断面において、仮想の直線に沿って延びており、
前記一方側シールリップ部は、前記連結部において前記突起部の間に並んで延びる一対の一方側シールリップを有しており、
前記他方側シールリップ部は、前記連結部において前記突起部の間に並んで延びる一対の他方側シールリップを有しており、
前記一方側シールリップの各々は先細になっており、
前記他方側シールリップの各々は先細になっていることを特徴とするガスケット。 - 前記一方側シールリップの各々の互いに背向する側面は、前記断面において、前記仮想の直線に対して傾いており、
前記他方側シールリップの各々の互いに背向する側面は、前記断面において、前記仮想の直線に対して傾いていることを特徴とする請求項1に記載のガスケット。 - 前記突起部は前記連結部に形成されていることを特徴とする請求項1又は2に記載のガスケット。
- 前記突起部は、前記断面において、前記仮想の直線の方向に突出していることを特徴とする請求項1に記載のガスケット。
- 前記連結部は、前記断面において、前記仮想の直線が中心線となるような形状になっていることを特徴とする請求項1に記載のガスケット。
- 前記一方側シールリップ部と前記他方側シールリップ部とは、前記断面において、前記仮想の直線に対して対称になっていることを特徴とする請求項1に記載のガスケット。
- 前記突起部の各々は、前記断面において、前記仮想の直線が中心線となるような形状になっていることを特徴とする請求項1に記載のガスケット。
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CN202280050542.2A CN117651820A (zh) | 2021-07-19 | 2022-07-19 | 密封垫 |
EP22845918.6A EP4375544A1 (en) | 2021-07-19 | 2022-07-19 | Gasket |
JP2023536758A JPWO2023002985A1 (ja) | 2021-07-19 | 2022-07-19 |
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EP (1) | EP4375544A1 (ja) |
JP (1) | JPWO2023002985A1 (ja) |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10184924A (ja) * | 1996-12-27 | 1998-07-14 | Komatsu Kasei Kk | ガスケットと同ガスケットによる容器の密閉構造 |
JP2004180824A (ja) | 2002-12-02 | 2004-07-02 | Pegasus Sewing Mach Mfg Co Ltd | ミシン用ガスケット及びそれを使用したミシン |
JP2018096400A (ja) * | 2016-12-09 | 2018-06-21 | 株式会社マーレ フィルターシステムズ | 密封構造 |
-
2022
- 2022-07-19 JP JP2023536758A patent/JPWO2023002985A1/ja active Pending
- 2022-07-19 EP EP22845918.6A patent/EP4375544A1/en active Pending
- 2022-07-19 WO PCT/JP2022/028062 patent/WO2023002985A1/ja active Application Filing
- 2022-07-19 CN CN202280050542.2A patent/CN117651820A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10184924A (ja) * | 1996-12-27 | 1998-07-14 | Komatsu Kasei Kk | ガスケットと同ガスケットによる容器の密閉構造 |
JP2004180824A (ja) | 2002-12-02 | 2004-07-02 | Pegasus Sewing Mach Mfg Co Ltd | ミシン用ガスケット及びそれを使用したミシン |
JP2018096400A (ja) * | 2016-12-09 | 2018-06-21 | 株式会社マーレ フィルターシステムズ | 密封構造 |
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CN117651820A (zh) | 2024-03-05 |
EP4375544A1 (en) | 2024-05-29 |
JPWO2023002985A1 (ja) | 2023-01-26 |
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