JP2017032035A - Seal structure and seal method - Google Patents

Abstract

A liquid gasket is used to seal two parts beautifully while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. A closed container includes a case member, a lid member, a gasket, and a screw. The case member 10 includes a rectangular bottom wall portion 12 and four side wall portions 13 erected from each of the four sides of the bottom wall portion 12. A groove is formed at the top of the side wall 13, and a gasket 30 is formed in the groove. The restoring force with respect to the pressing force applied to the gasket 30 is smaller on the intermediate side of the two screws 40 adjacent in the extending direction of the gasket 30 than in the vicinity of the screw 40. [Selection] Figure 1

Description

  The present invention relates to a sealing structure and a sealing method.

  Generally, when two parts are sealed and joined, a gasket is interposed between the joining surfaces of these two parts. A liquid gasket may be used as this gasket. This liquid gasket is liquid immediately after being applied, but is cured by a curing process. (For example, refer to Patent Document 1).

  The two parts are disposed opposite to each other with a gasket obtained by curing a liquid gasket, and are fastened by screws. According to this configuration, a pressing force pressing in the direction between the two parts is applied to the gasket, and the gasket is compressed to seal the two parts.

JP 2009-52632 A

  When the above-described pressing force is applied to the gasket, a restoring force against the pressing force is generated in the gasket. In the vicinity of the screw, the two parts are fastened together by the screw, so that the gasket is sufficiently compressed. However, in a region away from the screw, at least one of the two parts is bent by the above-described restoring force, and there is a possibility that the appearance is impaired.

  As a technique for preventing the two parts from bending, there can be considered a technique of increasing the number of screws to narrow the interval between the screws and a technique of increasing the thickness of the parts to improve the rigidity of the parts. However, increasing the number of screws increases the manufacturing cost. Further, when the thickness of the component is increased, the weight of the component is increased, the size is increased, and the manufacturing cost is increased.

  Therefore, the present invention has been made in view of the above-described problems, and is capable of sealing two parts with a beautiful appearance using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. With the goal.

  According to the present invention, a first part and a second part are disposed to face each other with a gasket in which a liquid gasket is cured interposed therebetween, and are spaced apart in the extending direction of the gasket. A sealing structure that forms a sealed structure by pressing the gasket by fastening with a plurality of fastening members, and the restoring force against the pressing force that presses the gasket is greater than the vicinity of the fastening member. It is small at the intermediate part side of the some fastening member adjacent to the extending direction.

  According to the present invention, it is possible to seal two parts beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost.

It is a disassembled perspective view which shows 1st Embodiment of the airtight container using the seal structure by this invention. It is a perspective view showing a 1st embodiment of an airtight container in the state where a case member and a lid member were fastened. It is sectional drawing which shows 1st Embodiment of the case member cut | disconnected along arrow AA in FIG. 1, and a gasket. It is sectional drawing which shows 1st Embodiment of the case member cut | disconnected along arrow BB in FIG. 1, and a gasket. It is sectional drawing which shows 1st Embodiment of the airtight container cut | disconnected along the arrow CC in FIG. It is sectional drawing which cut | disconnected the case member and gasket which concern on 2nd Embodiment similarly to FIG. It is sectional drawing which cut | disconnected the case member and gasket which concern on the modification of 2nd Embodiment similarly to FIG. It is sectional drawing which cut | disconnected the case member and gasket which concern on 3rd Embodiment similarly to FIG. It is sectional drawing which cut | disconnected the case member and gasket which concern on 4th Embodiment similarly to FIG. It is a block diagram of the gasket formation apparatus which forms the gasket which concerns on 4th Embodiment. It is the modification of sectional drawing which cut | disconnected the case member and gasket which concern on the modification of 4th Embodiment similarly to FIG. It is sectional drawing which cut | disconnected the case member and gasket which concern on 5th Embodiment similarly to FIG. It is a block diagram of the gasket formation apparatus which forms the gasket which concerns on 5th Embodiment. It is sectional drawing which cut | disconnected the case member and gasket which concern on 6th Embodiment similarly to FIG. It is a block diagram of the gasket formation apparatus which forms the gasket which concerns on 6th Embodiment. It is sectional drawing which cut | disconnected the case member and gasket which concern on 7th Embodiment similarly to FIG. It is a block diagram of the gasket formation apparatus which forms the gasket which concerns on 7th Embodiment. It is sectional drawing which cut | disconnected the case member and gasket which concern on 8th Embodiment similarly to FIG. It is a block diagram of the gasket formation apparatus which forms the gasket which concerns on 8th Embodiment. It is sectional drawing which cut | disconnected the case member and gasket which concern on the modification of 8th Embodiment similarly to FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the constituent elements in the following embodiments can be appropriately replaced with existing constituent elements, and various variations including combinations with other existing constituent elements are possible. For this reason, the description of the following embodiments does not limit the contents of the invention described in the claims.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view of a sealed container 1 using a seal structure according to the present invention. The sealed container 1 includes a case member 10 (first component), a lid member 20 (second component), a gasket 30 (gasket), a male screw 41, a through hole 42, and a screw 40 (fastening) having a female screw 43. And a circuit board is accommodated therein. In order to expose a part of the connector mounted on the circuit board to the outside of the sealed container 1, a through window may be appropriately formed in the case member 10.

  The lid member 20 is formed in a rectangular plate shape by, for example, aluminum die casting. One through hole 42 is formed at each of the four corners of the lid member 20. The lid member 20 may be appropriately formed with a rib shape for reinforcement.

  The case member 10 is formed in a box shape having an upper opening by, for example, aluminum die casting. The case member 10 includes a rectangular bottom wall portion 12 and four side wall portions 13 erected from each of the four sides of the bottom wall portion 12. A female screw 43 is formed on the top portion of the side wall portion 13 at a position facing the through hole 42 when the case member 10 and the lid member 20 are disposed to face each other. A gasket 30 is provided on the top of the side wall 13.

  FIG. 2 is a perspective view of the sealed container 1 in a state where the case member 10 and the lid member 20 are fastened. The case member 10 and the lid member 20 are disposed to face each other with a gasket 30 interposed therebetween, and are fastened by screwing a male screw 41 inserted through the through hole 42 to a female screw 43. When the case member 10 and the lid member 20 are fastened, a pressing force in the inter-part direction between the case member 10 and the lid member 20 is applied to the gasket 30, and the gasket 30 is compressed and the case member 10 and the lid member 20 are Is sealed. As a result, the space surrounded by the bottom wall portion 12 and the four side wall portions 13 of the case member 10 and the lid member 20, that is, the inside of the sealed container 1 in which the circuit board is accommodated is sealed. .

  3 is a cross-sectional view of the case member 10 and the gasket 30 cut along the arrow AA in FIG. The case member 10 includes a contact surface 131 and a groove portion 14 at the top of the side wall portion 13.

  The groove portion 14 is continuously formed on the top portion of the side wall portion 13. The contact surface 131 is a surface that contacts the lid member 20, and is formed continuously at the top of the side wall portion 13 along the inner edge and the outer edge of the groove portion 14.

  The groove portion 14 includes a bottom wall portion 141 and two side wall portions 142 standing from both ends of the bottom wall portion 141 in the width direction. The bottom wall portion 141 is parallel to a region facing the groove portion 14 in the lid member 20 fastened to the case member 10 in a cross section perpendicular to the extending direction of the groove portion 14.

  A liquid gasket is applied in the groove 14, and the liquid gasket is cured to form a gasket 30 in the groove 14. Examples of the process for curing the liquid gasket include a process for heating the liquid gasket, a process for humidifying the liquid gasket, and a process for irradiating the liquid gasket with ultraviolet rays.

  In addition, in order to compress the gasket 30 and seal the case member 10 and the lid member 20 as described above, it is necessary to make the gasket 30 protrude from the contact surface 131 to ensure a crushing allowance of the gasket 30. . Therefore, the height dimension h30 of the gasket 30 (the length from the bottom wall part 141 of the groove part 14 to the top part of the gasket 30) is the depth dimension h14 of the groove part 14 (the bottom wall part 141 of the groove part 14 to the contact surface 131). The gasket 30 is formed to be larger than (length).

  Further, when a pressing force is applied to the gasket 30 as described above, the pressed gasket 30 is elastically deformed. For this reason, a space where the elastically deformed gasket 30 can escape is required. Therefore, the gasket 30 is formed such that the width dimension w30 of the gasket 30 is smaller than the width dimension w14 of the groove portion 14 (the length between the side wall portions 142 of the groove portion 14). According to this configuration, a space is formed between the gasket 30 and the side wall portion 142 (on both sides of the gasket 30 in FIG. 3). Note that the above-described space is not necessary depending on the type of the gasket 30.

  4 is a cross-sectional view of the case member 10 and the gasket 30 cut along the arrow BB in FIG. The depth of the groove portion 14 is the shallowest in the vicinity of the female screw 43, becomes deeper in a curved shape as it is away from the female screw 43, and is deepest in the intermediate portion between two female screws 43 adjacent to each other in the extending direction of the gasket 30.

  For this reason, it is assumed that the liquid gasket is applied in the groove portion 14 while keeping the application amount of the liquid gasket per unit time and the movement amount per unit time of the nozzle for discharging the liquid gasket into the groove portion 14 constant. . Then, the height dimension of the gasket 30 becomes constant regardless of the distance from the female screw 43. For this reason, the protrusion height of the gasket 30 from the contact surface 131 is the highest in the vicinity of the female screw 43, becomes lower as the distance from the female screw 43 increases, and becomes the lowest in the above-described intermediate portion. Therefore, the crushing allowance of the gasket 30 is the largest in the vicinity of the female screw 43, becomes smaller as the distance from the female screw 43 increases, and becomes the smallest in the above-described intermediate portion.

  FIG. 5 is a cross-sectional view of the sealed container 1 cut along the arrow CC in FIG. As the crushing cost of the gasket 30 decreases, the restoring force against the pressing force applied to the gasket 30 decreases. For this reason, the restoring force with respect to the pressing force applied to the gasket 30 is greatest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and decreases at the above-described intermediate portion. Therefore, it is possible to prevent the case member 10 and the lid member 20 from being bent due to the restoring force with respect to the pressing force applied to the gasket 30 in the middle portion between the two female screws 43 adjacent in the extending direction of the gasket 30 and in the vicinity thereof. Can do. Therefore, it is possible to seal the case member 10 and the lid member 20 beautifully using the liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost.

  In the present embodiment, the groove portion 14 is formed on the top of the side wall portion 13, and the gasket 30 is formed in the groove portion 14.

  However, the present invention is not limited thereto, and for example, the groove 14 may be formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. In this case, the gasket 30 may be formed either in the groove formed in the top of the side wall 13 or in the groove formed in the lid member 20.

  Moreover, the groove part 14 may be formed in one side among the top part of the side wall part 13, and the area | region facing the top part of the side wall part 13 among the cover members 20, and the gasket 30 may be formed in the other. In this case, the groove 14 is formed at the top of the side wall 13, and the crushing margin of the gasket 30 is the largest in the vicinity of the female screw 43 as the gasket 30 is formed in the groove 14. It becomes small and becomes the smallest in the above-mentioned intermediate part. For this reason, the restoring force with respect to the pressing force applied to the gasket 30 is the largest in the vicinity of the female screw 43, decreases as it moves away from the female screw 43, and becomes the smallest in the above-described intermediate portion. Can do.

  Further, in this embodiment, the depth of the groove portion 14 is increased in a curved shape as shown in FIG. 4 as the distance from the female screw 43 is increased. However, the depth is not limited to this, and may be increased in a linear shape, for example. , You may make it deep like a staircase.

  In the present embodiment, the depth of the groove portion 14 is increased as the distance from the female screw 43 increases. However, the space between the gasket 30 and the side wall portion 142 described above with reference to FIG. 3 is unnecessary, and when this space is not formed, the width of the groove portion 14 may be increased as the distance from the female screw 43 increases. . In this case, as the distance from the female screw 43 increases, the width of the gasket 30 increases and the height of the gasket 30 decreases, and as a result, the crushing cost of the gasket 30 decreases. For this reason, the restoring force with respect to the pressing force applied to the gasket 30 is the largest in the vicinity of the female screw 43, decreases as it moves away from the female screw 43, and becomes the smallest in the above-described intermediate portion. Can do.

Second Embodiment
A second embodiment of the present invention will be described with reference to FIGS.

  6 is a cross-sectional view of the case member 10A and the gasket 30 included in the sealed container 1A according to the second embodiment, cut in the same manner as in FIG. In addition, 1 A of airtight containers differ from the airtight container 1 which concerns on 1st Embodiment by the point provided with case member 10A instead of the case member 10, and it has the same form about another part. Further, the case member 10A is different from the case member 10 according to the first embodiment in that the groove portion 14A is provided at the top of the side wall portion 13 instead of the groove portion 14, and the other portions have the same form. doing. For this reason, about the part which has the same form as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The case member 10 </ b> A includes a contact surface 131 and a groove portion 14 </ b> A at the top of the side wall portion 13.

  14 A of groove parts are continuously formed in the top part of the side wall part 13, and are provided with the bottom wall part 141A and the two side wall parts 142 standingly arranged from the both ends of the width direction of the bottom wall part 141A. The bottom wall portion 141A is inclined in a V shape with respect to a region facing the groove portion 14A in the lid member 20 fastened to the case member 10A in a cross section perpendicular to the extending direction of the groove portion 14A. A recess 15 is formed between the wall portions 141A.

  The inclination of the V-shape of the bottom wall portion 141A is the smallest in the vicinity of the female screw 43, increases as the distance from the female screw 43 increases, and is greatest in the intermediate portion between the two female screws 43 adjacent in the extending direction of the gasket 30. . Therefore, the depth of the groove portion 14A increases as the distance from the female screw 43 increases, and the cross-sectional area of the recess 15 in the cross section perpendicular to the extending direction of the groove portion 14A is the smallest in the vicinity of the female screw 43 and increases as the distance from the female screw 43 increases. It becomes the largest in the above-mentioned intermediate part.

  For this reason, as the distance from the female screw 43 increases, the number of gaskets formed in the recess 15 in the groove 14A increases, and the number of gaskets formed in the region other than the recess 15 in the groove 14A relatively decreases. Therefore, the protrusion height of the gasket 30 from the contact surface 131 is the highest in the vicinity of the female screw 43, becomes lower as the distance from the female screw 43 increases, and becomes the lowest in the above-described intermediate portion.

  For this reason, the crushing allowance of the gasket 30 is the largest in the vicinity of the female screw 43, becomes smaller as the distance from the female screw 43 increases, and becomes the smallest in the above-described intermediate portion. Therefore, the restoring force with respect to the pressing force applied to the gasket 30 is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and decreases in the above-described intermediate portion. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10A and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the bottom wall portion 141A is V-shaped with respect to the region facing the groove portion 14A in the lid member 20 fastened to the case member 10A in a cross section perpendicular to the direction in which the groove portion 14A extends. Tilted. However, the bottom wall portion 141A only needs to have an inclination with respect to the region facing the groove portion 14A in the lid member 20 fastened to the case member 10A in a cross section perpendicular to the extending direction of the groove portion 14A. . Specifically, for example, the bottom wall portion 141A is U-shaped with respect to a region facing the groove portion 14A in the lid member 20 fastened to the case member 10A in a cross section perpendicular to the direction in which the groove portion 14A extends. You may make it incline.

  Further, in the present embodiment, the bottom wall portion 141 </ b> A is inclined in a V shape as described above, and this inclination is increased as the distance from the female screw 43 increases.

  However, the present invention is not limited to this, for example, as shown in FIG. 7, the bottom wall 141 </ b> A is opposed to the groove 14 </ b> A of the inclined member 141 </ b> B that is inclined in the above-described V shape and the lid member 20 fastened to the case member 10 </ b> A. You may comprise by the parallel part 141C parallel to the area | region to do. In this case, as the distance from the female screw 43 increases, the width w15 of the recess 15 sandwiched between the inclined portions 141B is increased, and the width of the parallel portion 141C is relatively decreased. According to this configuration, as the distance from the female screw 43 increases, the cross-sectional area of the recess 15 in the cross section perpendicular to the direction in which the groove portion 14A extends increases, so that the same effect as described above can be achieved.

  Further, for example, the bottom wall portion 141A has a V-shape in the vicinity of the female screw 43 in a cross section perpendicular to the extending direction of the groove portion 14A, and approaches the U-shape as the distance from the female screw 43 increases. It may be U-shaped. In this case, as the distance from the female screw 43 increases, the slope of the bottom wall portion 141A increases, and the cross-sectional area of the recess 15 in the cross section perpendicular to the direction in which the groove portion 14A extends increases. be able to.

  Moreover, in this embodiment, the groove part 14A was formed in the top part of the side wall part 13, and the gasket 30 was formed in the groove part 14A. However, the present invention is not limited to this, and as described above in the first embodiment, for example, the groove portion 14A is formed in the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20. Also good. Further, as described above in the first embodiment, the groove portion 14A is formed in one of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30 is formed in the other. May be formed.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to FIG.

  FIG. 8 is a cross-sectional view of the case member 10B and the gasket 30 provided in the sealed container 1B according to the third embodiment, similar to FIG. In addition, the airtight container 1B differs from the airtight container 1 which concerns on 1st Embodiment by the point provided with case member 10B instead of the case member 10, and it has the same form about another part. Further, the case member 10B is different from the case member 10 according to the first embodiment in that a groove portion 14D is provided at the top of the side wall portion 13 instead of the groove portion 14, and the other portions have the same form. doing. For this reason, about the part which has the same form as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The case member 10 </ b> B includes a contact surface 131 and a groove portion 14 </ b> D at the top of the side wall portion 13.

  The groove portion 14D is formed continuously from the top portion of the side wall portion 13, and includes a first groove portion 14B and a second groove portion 14C formed at the groove bottom of the first groove portion 14B.

  The first groove portion 14B includes a bottom wall portion 141D and two side wall portions 142 standing from both ends in the width direction of the bottom wall portion 141D. The bottom wall portion 141D is parallel to a region facing the groove portion 14D in the lid member 20 fastened to the case member 10B in a cross section perpendicular to the extending direction of the groove portion 14D. Further, the depth of the first groove portion 14 </ b> B is constant regardless of the distance from the female screw 43.

  The second groove portion 14 </ b> C includes a bottom wall portion 143 and two side wall portions 144 erected from both ends in the width direction of the bottom wall portion 143. The bottom wall part 143 is parallel to the lid member 20 fastened to the case member 10B in a cross section perpendicular to the extending direction of the groove part 14D.

  The depth of the second groove portion 14C is the shallowest in the vicinity of the female screw 43, as in the depth of the groove portion 14 according to the first embodiment shown in FIG. Is deepest in the middle part of the two female screws 43 adjacent to each other in the extending direction of the. For this reason, the cross-sectional area of the second groove portion 14C in the cross section perpendicular to the extending direction of the groove portion 14D is the smallest in the vicinity of the female screw 43, increases with distance from the female screw 43, and becomes the largest in the above-described intermediate portion.

  Here, when a liquid gasket is applied in the groove portion 14D, the liquid gasket flows into the second groove portion 14C and is accommodated in the second groove portion 14C, and is not completely accommodated in the second groove portion 14C, and the second groove portion 14C. The material overflowing from is accommodated in the first groove 14B. For this reason, the amount of the liquid gasket accommodated in the second groove portion 14C is the smallest in the vicinity of the female screw 43, increases as the distance from the female screw 43 increases, and increases in the above-described intermediate portion.

  For this reason, the gasket formed in the 2nd groove part 14C increases as it leaves | separates from the internal thread 43, and the gasket formed in the 1st groove part 14B decreases relatively. Therefore, the protrusion height of the gasket 30 from the contact surface 131 is the highest in the vicinity of the female screw 43, becomes lower as the distance from the female screw 43 increases, and becomes the lowest in the above-described intermediate portion.

  For this reason, the crushing allowance of the gasket 30 is the largest in the vicinity of the female screw 43, becomes smaller as the distance from the female screw 43 increases, and becomes the smallest in the above-described intermediate portion. Therefore, the restoring force with respect to the pressing force applied to the gasket 30 is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and decreases in the above-described intermediate portion. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10B and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the depth of the second groove portion 14 </ b> C is increased as the distance from the female screw 43 increases. However, the present invention is not limited to this, and the width of the second groove portion 14C may be increased as the distance from the female screw 43 increases, and the depth dimension and the width dimension of the second groove portion 14C may be increased as the distance from the female screw 43 increases. Also good. In addition, at least one of the depth dimension and the width dimension of the first groove portion 14B may be increased as the distance from the female screw 43 increases, and at least one of the depth dimension and the width dimension of the first groove portion 14B. Further, at least one of the depth dimension and the width dimension of the second groove portion 14 </ b> C may be increased as the distance from the female screw 43 increases.

  In the present embodiment, the groove portion 14D is composed of the first groove portion 14B and the second groove portion 14C formed on the groove bottom of the first groove portion 14B. However, the present invention is not limited to this, and the groove portion 14D may be composed of three or more groove portions, for example, a groove portion may be further formed on the groove bottom of the second groove portion 14C. In this case, at least one of the depth dimension and the width dimension may be increased as the distance from the female screw 43 is increased for at least one of the plurality of groove parts constituting the groove part 14D.

  In the present embodiment, the bottom wall portion 143 is parallel to a region facing the groove portion 14D in the lid member 20 fastened to the case member 10B in a cross section perpendicular to the extending direction of the groove portion 14D. Not only this but the bottom wall 141A according to the second embodiment may be inclined to a V shape or U shape, and this inclination may be increased as the distance from the female screw 43 increases.

  Moreover, in this embodiment, the groove part 14D was formed in the top part of the side wall part 13, and the gasket 30 was formed in the groove part 14D. However, not limited to this, as described above in the first embodiment, for example, the groove portion 14D is formed in the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20. Also good. Further, as described above in the first embodiment, the groove portion 14D is formed in one of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30 is formed in the other. May be formed.

  In the present embodiment, the depth of the second groove portion 14C is increased in a curved shape as the distance from the female screw 43 increases. However, the present invention is not limited to this. For example, as described above in the first embodiment, the depth of the second groove portion 14C is increased in a linear shape. Alternatively, it may be deepened stepwise.

<Fourth embodiment>
A fourth embodiment of the present invention will be described with reference to FIGS.

  FIG. 9 is a cross-sectional view of the case member 10C and the gasket 30A included in the sealed container 1C according to the fourth embodiment, cut similarly to FIG. The sealed container 1C is different from the sealed container 1 according to the first embodiment in that the case member 10C is provided instead of the case member 10 and the gasket 30A is provided instead of the gasket 30. Other parts have the same form. The case member 10C is different from the case member 10 according to the first embodiment in that a groove portion 14E is provided at the top of the side wall portion 13 instead of the groove portion 14, and the other portions have the same form. doing. For this reason, about the part which has the same form as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The case member 10 </ b> C includes a contact surface 131 and a groove portion 14 </ b> E at the top of the side wall portion 13.

  The groove portion 14E is formed continuously from the top portion of the side wall portion 13, and, similar to the groove portion 14 according to the first embodiment shown in FIG. 3, the bottom wall portion 141E and the bottom wall portion 141E stand from both ends in the width direction. Two side wall portions 142 to be provided. The bottom wall portion 141E is the same as the bottom wall portion 141 according to the first embodiment shown in FIG. 3, in the lid member 20 fastened to the case member 10C in the cross section perpendicular to the extending direction of the groove portion 14E. It is parallel to the region facing the groove 14E. However, the depth of the groove 14E is constant regardless of the distance from the female screw 43.

  The gasket 30A is formed in the groove portion 14E by curing the liquid gasket applied in the groove portion 14E. The height of the gasket 30A is the largest in the vicinity of the female screw 43, decreases in a curved shape as it is away from the female screw 43, and is the smallest in the intermediate portion between two female screws 43 adjacent in the extending direction of the gasket 30A. For this reason, the protrusion height of the gasket 30A from the contact surface 131 is the highest in the vicinity of the female screw 43, becomes lower as the distance from the female screw 43 increases, and becomes the lowest in the above-described intermediate portion.

  For this reason, the crushing allowance of the gasket 30 </ b> A is the largest in the vicinity of the female screw 43, becomes smaller as the distance from the female screw 43 increases, and becomes the smallest in the above-described intermediate portion. Therefore, the restoring force with respect to the pressing force applied to the gasket 30A is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and decreases at the above-described intermediate portion. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10C and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the height of the gasket 30A is reduced as the distance from the female screw 43 increases. The height of the gasket 30A is controlled by the gasket forming apparatus AA shown in FIG. The gasket forming apparatus AA includes a discharge unit A1 that discharges the liquid gasket and a moving unit A2 that moves the discharge unit A1.

  As a method of controlling the height dimension of the gasket 30A, for example, a method of controlling the amount of liquid gasket per unit time discharged from the discharge unit A1, or a movement amount of the discharge unit A1 per unit time is controlled by the moving unit A2. There is a technique to do. Specifically, if the amount of the liquid gasket discharged from the discharge unit A1 per unit time is reduced or the movement amount of the discharge unit A1 per unit time is increased, the height dimension of the gasket 30A is reduced. Can do.

  Further, as a method for controlling the height dimension of the gasket 30A, for example, as shown in FIG. 11, there is also a method of pressing the top of the liquid gasket as a whole. Specifically, the gasket forming apparatus AA shown in FIG. 10 is provided with a pressing portion that generally presses the top of the liquid gasket. Before the curing of the liquid gasket is completed by this pressing portion, the top of the liquid gasket discharged from the discharge portion A1 is entirely pressed so that the top of the liquid gasket is entirely on the base side (bottom wall portion of the liquid gasket). 141E side). By doing in this way, the height dimension of gasket 30A can be made small. In this case, the amount of the liquid gasket moved to the base side of the liquid gasket is increased as the distance from the female screw 43 increases. The term “before the liquid gasket is completely cured” refers to the period from the time when the liquid gasket is discharged from the discharge portion A1 to the time when the liquid gasket is completely cured. This process is being executed.

  In this embodiment, the height of the gasket 30A is reduced as the distance from the female screw 43 increases. However, the present invention is not limited to this, and the width of the gasket 30A may be reduced. In this case, even if the protruding height of the gasket 30 </ b> A from the contact surface 131 is constant regardless of the distance from the female screw 43, the gasket 30 </ b> A is easily elastically deformed as the distance from the female screw 43 increases. Therefore, the restoring force with respect to the pressing force applied to the gasket 30A is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 decreases, and decreases at the above-described intermediate portion. it can.

  Further, in the present embodiment, the height of the gasket 30A is reduced in a curved shape as it is away from the female screw 43. However, the height is not limited to this, and may be reduced in a linear shape or in a stepped shape, for example. Also good.

  In the present embodiment, the depth of the groove 14E is constant regardless of the distance from the female screw 43. However, the depth is not limited to this. For example, the groove 14E is separated from the female screw 43 in the same manner as the groove 14 according to the first embodiment. You may deepen according to.

  In the present embodiment, the bottom wall 141E is parallel to a region facing the groove 14E in the lid member 20 fastened to the case member 10C in a cross section perpendicular to the direction in which the groove 14E extends. However, the present invention is not limited to this, and the bottom wall portion 141E is inclined into a V shape or a U shape similarly to the bottom wall portion 141A according to the second embodiment, and this inclination is increased as the distance from the female screw 43 increases. Also good. Moreover, the groove part 14E is comprised by several groove part similarly to the groove part 14D which concerns on 3rd Embodiment, and at least any one of a depth dimension and a width dimension is made into the internal thread 43 about at least 1 among these several groove parts. You may enlarge as you leave.

  Moreover, in this embodiment, the groove part 14E was formed in the top part of the side wall part 13, and the gasket 30A was formed in the groove part 14E. However, the present invention is not limited to this, and as described in the first embodiment, for example, the groove 14E is formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. Also good. Further, as described above in the first embodiment, the groove portion 14E is formed in one of the top portion of the side wall portion 13 and the region of the lid member 20 facing the top portion of the side wall portion 13, and the gasket 30A is formed in the other. May be formed. Further, the groove portion 14E is not formed in any of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30A is replaced with the top portion of the side wall portion 13 and the lid member 20. You may form in any of the area | region which opposes the top part of the side wall part 13 among these.

<Fifth Embodiment>
A fifth embodiment of the present invention will be described with reference to FIGS.

  12 is a cross-sectional view of the case member 10C and the gasket 30B included in the sealed container 1D according to the fifth embodiment, cut in the same manner as in FIG. The sealed container 1 </ b> D is similar to the sealed container 1 </ b> C according to the fourth embodiment in that the sealed container 1 according to the first embodiment includes a case member 10 </ b> C instead of the case member 10 and the gasket 30. The gasket 30B is provided with a gasket 30B, and the other parts have the same configuration. Further, the case member 10 </ b> C is similar to the case member 10 </ b> C according to the fourth embodiment in that the groove portion 14 </ b> E is provided at the top of the side wall portion 13 instead of the groove portion 14. They are different, and other parts have the same form. For this reason, about the part which has the same form as 1st Embodiment and 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The gasket 30B is formed in the groove portion 14E by curing the liquid gasket applied in a two-tiered manner in the groove portion 14E. For this reason, the gasket 30 </ b> B includes a first-stage gasket 301 and a second-stage gasket 302 formed on the gasket 301.

  The height dimension of the second-stage gasket 302 is the largest in the vicinity of the female screw 43, decreases in a curved shape as it is away from the female screw 43, and is the highest in the middle portion between two female screws 43 adjacent in the extending direction of the gasket 30B. small. For this reason, the protrusion height of the gasket 30B from the contact surface 131 is the highest in the vicinity of the female screw 43, becomes lower as the distance from the female screw 43 increases, and becomes the lowest in the above-described intermediate portion.

  For this reason, the crushing allowance of the gasket 30 </ b> B is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and becomes the smallest in the above-described intermediate portion. Therefore, the restoring force with respect to the pressing force applied to the gasket 30B is greatest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 increases, and decreases in the above-described intermediate portion. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10C and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the gasket 30 </ b> B is formed by curing the liquid gasket applied in a two-tiered manner in the groove 14 </ b> E. The gasket 30B is formed by the gasket forming apparatus BB shown in FIG. The gasket forming apparatus BB includes a discharge unit B1 that discharges the liquid gasket, a moving unit B2 that moves the discharge unit B1, and a curing unit B3 that cures the liquid gasket discharged from the discharge unit B1.

  The liquid gasket is discharged from the discharge part B1, and the discharge part B1 is moved by the moving part B2 to apply the liquid gasket. The applied liquid gasket is cured by, for example, performing a process of heating the liquid gasket, a process of humidifying the liquid gasket, or a process of irradiating the liquid gasket with ultraviolet rays by the curing unit B3. The application and curing of the liquid gasket may be performed by stacking and applying the liquid gaskets in two stages, and curing these two stages of liquid gaskets together, or applying and curing the first stage liquid gasket, Thereafter, a second-stage liquid gasket may be applied and cured.

  In the present embodiment, the gasket 30B is configured by the first-stage gasket 301 and the second-stage gasket 302. The ratio (h1 / w1) between the height h1 of the gasket 301 and the width w1 of the gasket 301 and the ratio (h2 / w2) between the height h2 of the gasket 302 and the width w2 of the gasket 302 are each less than or equal to x. It is preferable. x is a value (for example, “1”) determined according to the material of the liquid gasket, and as the value of x decreases, the gaskets 301 and 302 are less likely to fall down, so that it is easy to ensure sealing performance.

  In the present embodiment, the gasket 30B is configured by stacking two stages of the gaskets 301 and 302. However, the present invention is not limited thereto, and may be configured by stacking three or four stages.

  In the present embodiment, the height of the gasket 302 is reduced as the distance from the female screw 43 increases. However, the present invention is not limited to this, and the width of the gasket 302 may be reduced. In this case, even if the protruding height of the gasket 30 </ b> B from the contact surface 131 is constant regardless of the distance from the female screw 43, the gasket 30 </ b> B is easily elastically deformed as the distance from the female screw 43 increases. Accordingly, the restoring force with respect to the pressing force applied to the gasket 30B is the largest in the vicinity of the female screw 43, decreases as the distance from the female screw 43 decreases, and decreases at the intermediate portion described above. Therefore, the same effect as described above can be achieved. it can.

  In this embodiment, the height of the gasket 302 is reduced as the distance from the female screw 43 increases. However, the present invention is not limited to this, and at least one of the height and width of the gasket 301 may be reduced. In addition, at least one of the height dimension and the width dimension of the gasket 301 and at least one of the height dimension and the width dimension of the gasket 302 may be reduced.

  In the present embodiment, the height of the gasket 302 is reduced as the distance from the female screw 43 increases. As a method for controlling the height dimension of the gasket 302, as in the fourth embodiment, a method for controlling the amount of liquid gasket per unit time discharged from the discharge unit B1, or a unit per unit time of the discharge unit B1 is used. There are a method of controlling the moving amount by the moving part B2, and a method of pressing the top of the liquid gasket as a whole.

  In the present embodiment, the height of the gasket 302 is reduced in a curved shape as the distance from the female screw 43 is increased. However, the present invention is not limited to this. For example, as described above in the first embodiment, the height is reduced linearly. Alternatively, it may be reduced in steps.

  In the present embodiment, the depth of the groove 14E is constant regardless of the distance from the female screw 43. However, the depth is not limited to this. For example, the groove 14E is separated from the female screw 43 in the same manner as the groove 14 according to the first embodiment. You may deepen according to.

  In the present embodiment, the bottom wall 141E is parallel to a region facing the groove 14E in the lid member 20 fastened to the case member 10C in a cross section perpendicular to the direction in which the groove 14E extends. However, the present invention is not limited to this, and the bottom wall portion 141E is inclined into a V shape or a U shape similarly to the bottom wall portion 141A according to the second embodiment, and this inclination is increased as the distance from the female screw 43 increases. Also good. Moreover, the groove part 14E is comprised by several groove part similarly to the groove part 14D which concerns on 3rd Embodiment, and at least any one of a depth dimension and a width dimension is made into the internal thread 43 about at least 1 among these several groove parts. You may enlarge as you leave.

  Moreover, in this embodiment, the groove part 14E was formed in the top part of the side wall part 13, and the gasket 30B was formed in the groove part 14E. However, the present invention is not limited to this, and as described in the first embodiment, for example, the groove 14E is formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. Also good. Further, as described above in the first embodiment, the groove portion 14E is formed in one of the top portion of the side wall portion 13 and the region of the lid member 20 facing the top portion of the side wall portion 13, and the gasket 30B is formed in the other. May be formed. Further, the groove portion 14E is not formed in any of the top portion of the side wall portion 13 and the region of the lid member 20 that faces the top portion of the side wall portion 13, and the gasket 30B is replaced by the top portion of the side wall portion 13 and the lid member 20. You may form in any of the area | region which opposes the top part of the side wall part 13 among these.

<Sixth Embodiment>
A sixth embodiment of the present invention will be described with reference to FIGS.

  14 is a cross-sectional view of the case member 10C and the gasket 30C included in the sealed container 1E according to the sixth embodiment, cut in the same manner as in FIG. The sealed container 1 </ b> E is similar to the sealed container 1 </ b> C according to the fourth embodiment in that the sealed container 1 according to the first embodiment includes a case member 10 </ b> C instead of the case member 10 and the gasket 30. It is different in that it has a gasket 30C, and the other parts have the same form. Further, the case member 10 </ b> C is similar to the case member 10 </ b> C according to the fourth embodiment in that the groove portion 14 </ b> E is provided at the top of the side wall portion 13 instead of the groove portion 14. They are different, and other parts have the same form. For this reason, about the part which has the same form as 1st Embodiment and 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The gasket 30C is formed in the groove portion 14E by curing the liquid gasket applied in the groove portion 14E. A slit 303 is formed in an intermediate portion of the two female screws 43 adjacent to each other in the extending direction of the gasket 30C among the top portion of the gasket 30C.

  For this reason, in the above-mentioned intermediate part, it becomes easy to elastically deform gasket 30C compared with other fields, and the restoring force to the pressing force applied to gasket 30C becomes small compared with other fields in the above-mentioned intermediate part. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10C and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the gasket 30C having the slit 303 formed at the top is formed. The gasket 30C is formed by the gasket forming apparatus CC shown in FIG. The gasket forming apparatus CC includes a discharge part C1 that discharges the liquid gasket, a moving part C2 that moves the discharge part C1, and a cutting part C3 that cuts the gasket. As the cutting part C3, for example, a cutter such as an ultrasonic cutter can be applied.

  While discharging a liquid gasket from the discharge part C1, this discharge part C1 is moved by the moving part C2, and a liquid gasket is apply | coated. The top of the applied liquid gasket is cut by the cutting part C3 before or after the curing is completed, and a slit 303 is formed. In addition, it is preferable that the cutting | disconnection by the cutting part C3 is performed before completion of hardening of a liquid gasket. If it is performed before the liquid gasket has been cured, it can be suppressed that scratches and cracks due to cutting enter the gasket 30C as compared with the case where the liquid gasket is cured, and the sealing performance can be improved. Can do.

  In the present embodiment, the slit 303 is formed in the above-described intermediate portion of the top portion of the gasket 30C. However, the present invention is not limited thereto, and the slit 303 may be formed in a region other than the above-described intermediate portion of the top portion of the gasket 30C. Good. In this case, for example, in the above-described intermediate portion of the top portion of the gasket 30C, the number of slits 303 to be formed is increased or the number of slits 303 to be formed is larger than the region other than the above-described intermediate portion in the top portion of the gasket 30C. The depth may be increased. By doing in this way, since the restoring force with respect to the pressing force applied to the gasket 30C can be reduced compared to other regions in the above-described intermediate portion, the same effect as described above can be achieved.

  Moreover, in this embodiment, the slit 303 was formed in the top part of the gasket 30C. However, the present invention is not limited to this, and gaskets may be stacked in a plurality of stages as in the fifth embodiment, and the slit 303 may be formed in the above-described intermediate portion of the uppermost gasket.

  In the present embodiment, at least one of the height dimension and the width dimension of the gasket 30 </ b> C may be reduced as the distance from the female screw 43 increases.

  In the present embodiment, the direction in which the slit 303 is formed may be the direction in which the gasket 30C extends, or may be the direction perpendicular to the direction in which the gasket 30C extends.

  In the present embodiment, the depth of the groove 14E is constant regardless of the distance from the female screw 43. However, the depth is not limited to this. For example, the groove 14E is separated from the female screw 43 in the same manner as the groove 14 according to the first embodiment. You may deepen according to.

  In the present embodiment, the bottom wall 141E is parallel to a region facing the groove 14E in the lid member 20 fastened to the case member 10C in a cross section perpendicular to the direction in which the groove 14E extends. However, the present invention is not limited to this, and the bottom wall portion 141E is inclined into a V shape or a U shape similarly to the bottom wall portion 141A according to the second embodiment, and this inclination is increased as the distance from the female screw 43 increases. Also good. Moreover, the groove part 14E is comprised by several groove part similarly to the groove part 14D which concerns on 3rd Embodiment, and at least any one of a depth dimension and a width dimension is made into the internal thread 43 about at least 1 among these several groove parts. You may enlarge as you leave.

  Moreover, in this embodiment, the groove part 14E was formed in the top part of the side wall part 13, and the gasket 30C was formed in the groove part 14E. However, the present invention is not limited to this, and as described in the first embodiment, for example, the groove 14E is formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. Also good. Further, as described above in the first embodiment, the groove portion 14E is formed in one of the top portion of the side wall portion 13 and the region of the lid member 20 facing the top portion of the side wall portion 13, and the gasket 30C is formed in the other. May be formed. Further, the groove portion 14E is not formed in any of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30C is replaced with the top portion of the side wall portion 13 and the lid member 20. You may form in any of the area | region which opposes the top part of the side wall part 13 among these.

<Seventh embodiment>
A seventh embodiment of the present invention will be described with reference to FIGS.

  16 is a cross-sectional view of the case member 10C and the gasket 30D included in the sealed container 1F according to the seventh embodiment, cut in the same manner as in FIG. The sealed container 1 </ b> F is similar to the sealed container 1 </ b> C according to the fourth embodiment in that the sealed container 1 according to the first embodiment includes a case member 10 </ b> C instead of the case member 10 and the gasket 30. And the gasket 30D is provided with a gasket 30D, and the other parts have the same configuration. Further, the case member 10 </ b> C is similar to the case member 10 </ b> C according to the fourth embodiment in that the groove portion 14 </ b> E is provided at the top of the side wall portion 13 instead of the groove portion 14. They are different, and other parts have the same form. For this reason, about the part which has the same form as 1st Embodiment and 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The gasket 30D is formed in the groove portion 14E by curing the liquid gasket applied in the groove portion 14E. Of the top part of the gasket 30D, a part of the top part of the gasket 30D is removed at the intermediate part of the two female threads 43 adjacent to the extending direction of the gasket 30D, so that it is perpendicular to the extending direction of the gasket 30D. A V-shaped recess 304 is formed in a simple cross section.

  For this reason, in the above-mentioned intermediate part, the crushing cost of gasket 30D becomes small compared with other fields. Further, in the above-described intermediate portion, the gasket 30D is easily elastically deformed as compared with other regions. As described above, the restoring force with respect to the pressing force applied to the gasket 30D is smaller in the above-described intermediate portion than in other regions. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10C and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the gasket 30D having the recess 304 formed at the top is formed. The gasket 30D is formed by the gasket forming apparatus DD shown in FIG. The gasket forming apparatus DD includes a discharge unit D1 that discharges the liquid gasket, a moving unit D2 that moves the discharge unit D1, and a removal unit D3 that removes the gasket. As the removing unit D3, for example, a cutter such as an ultrasonic cutter can be applied.

  While discharging a liquid gasket from the discharge part D1, this discharge part D1 is moved by the moving part D2, and a liquid gasket is apply | coated. A part of the top of the applied liquid gasket is removed by the removing portion D3 before or after the curing is completed, so that a recess 304 is formed. In addition, it is preferable that the removal by the removal part D3 is performed before completion of hardening of a liquid gasket. If it is performed before the liquid gasket is cured, it is possible to suppress scratches and cracks due to the removal from entering the gasket 30D and improve the sealing performance as compared with the case where the liquid gasket is cured. Can do.

  Moreover, in this embodiment, although the recessed part 304 was formed in the above-mentioned intermediate part among the top parts of the gasket 30D, it may not be restricted to this but may be formed also in the area | regions other than the above-mentioned intermediate part among the top parts of the gasket 30D. Good. In this case, for example, in the above-described intermediate portion of the top portion of the gasket 30D, the number of the recessed portions 304 to be formed or the height of the recessed portion 304 is increased compared to the region other than the above-described intermediate portion in the top portion of the gasket 30D. At least one of the dimension h4 and the width dimension w4 is increased. By doing in this way, since the restoring force with respect to the pressing force applied to gasket 30D can be made small compared with another area | region in the above-mentioned intermediate part, there can exist an effect similar to the effect mentioned above.

  Moreover, in this embodiment, the recessed part 304 was formed in the top part of gasket 30D. However, the present invention is not limited to this, and a plurality of gaskets may be stacked in a plurality of stages as in the fifth embodiment, and the recess 304 may be formed on the top of the uppermost gasket.

  In the present embodiment, at least one of the height dimension and the width dimension of the gasket 30 </ b> D may be reduced as the distance from the female screw 43 increases.

  In the present embodiment, the direction in which the recess 304 is formed may be the direction in which the gasket 30D extends, or the direction perpendicular to the direction in which the gasket 30D extends.

  In the present embodiment, the depth of the groove 14E is constant regardless of the distance from the female screw 43. However, the depth is not limited to this. For example, the groove 14E is separated from the female screw 43 in the same manner as the groove 14 according to the first embodiment. You may deepen according to.

  In the present embodiment, the bottom wall 141E is parallel to a region facing the groove 14E in the lid member 20 fastened to the case member 10C in a cross section perpendicular to the direction in which the groove 14E extends. However, the present invention is not limited to this, and the bottom wall portion 141E is inclined into a V shape or a U shape similarly to the bottom wall portion 141A according to the second embodiment, and this inclination is increased as the distance from the female screw 43 increases. Also good. Moreover, the groove part 14E is comprised by several groove part similarly to the groove part 14D which concerns on 3rd Embodiment, and at least any one of a depth dimension and a width dimension is made into the internal thread 43 about at least 1 among these several groove parts. You may enlarge as you leave.

  Moreover, in this embodiment, the groove part 14E was formed in the top part of the side wall part 13, and gasket 30D was formed in the groove part 14E. However, the present invention is not limited to this, and as described in the first embodiment, for example, the groove 14E is formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. Also good. Further, as described above in the first embodiment, the groove portion 14E is formed in one of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30D is formed in the other. May be formed. Further, the groove portion 14E is not formed in any of the top portion of the side wall portion 13 and the region of the lid member 20 that faces the top portion of the side wall portion 13, and the gasket 30D is replaced with the top portion of the side wall portion 13 and the lid member 20. You may form in any of the area | region which opposes the top part of the side wall part 13 among these.

<Eighth Embodiment>
The eighth embodiment of the present invention will be described with reference to FIGS.

  18 is a cross-sectional view of the case member 10C and the gasket 30E included in the sealed container 1G according to the eighth embodiment, cut in the same manner as in FIG. In addition, the airtight container 1G is similar to the airtight container 1C according to the fourth embodiment. The airtight container 1 according to the first embodiment includes a case member 10C instead of the case member 10 and a gasket 30 instead. The gasket 30E is provided with a gasket 30E, and the other parts have the same configuration. Further, the case member 10 </ b> C is similar to the case member 10 </ b> C according to the fourth embodiment in that the groove portion 14 </ b> E is provided at the top of the side wall portion 13 instead of the groove portion 14. They are different, and other parts have the same form. For this reason, about the part which has the same form as 1st Embodiment and 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  The gasket 30E is formed in the groove 14E by curing the liquid gasket applied in the groove 14E. A concave portion 305 is formed in an intermediate portion of the two female screws 43 adjacent to each other in the extending direction of the gasket 30E among the top portion of the gasket 30E. The recess 305 is formed by pressing the central portion of the top of the liquid gasket in a cross section perpendicular to the extending direction of the liquid gasket before the liquid gasket applied in the groove 14E is cured. . When the top of the liquid gasket is pressed, a part of the top of the liquid gasket moves to the base side (bottom wall 141E side) of the liquid gasket.

  For this reason, in the above-mentioned intermediate part, the crushing cost of the gasket 30E is smaller than in other areas. Further, in the above-described intermediate portion, the gasket 30E can be easily elastically deformed as compared with other regions. As described above, the restoring force with respect to the pressing force applied to the gasket 30E is smaller in the above-described intermediate portion than in other regions. Therefore, similarly to the sealed container 1 according to the first embodiment, the case member 10C and the lid member 20 are sealed beautifully using a liquid gasket while suppressing an increase in weight, an increase in size, and an increase in manufacturing cost. can do.

  In the present embodiment, the gasket 30E having the recess 305 formed at the top is formed. The gasket 30E is formed by the gasket forming apparatus EE shown in FIG. The gasket forming apparatus EE includes a discharge unit E1 that discharges the liquid gasket, a moving unit E2 that moves the discharge unit E1, and a pressing unit E3 that presses a part of the top of the liquid gasket discharged from the discharge unit E1. Prepare.

  While discharging a liquid gasket from the discharge part E1, this discharge part E1 is moved by the moving part E2, and a liquid gasket is apply | coated. The top part of the applied liquid gasket is pressed at the central part by the pressing part E3 in a cross section perpendicular to the extending direction of the liquid gasket, so that a recess 305 is formed.

  Moreover, in this embodiment, the recessed part 305 was formed in the center part of the top part of the gasket 30E by pressing the center part of the top part of a liquid gasket in the cross section perpendicular | vertical to the extending direction of a liquid gasket. However, the present invention is not limited to this, and a part of the top of the liquid gasket may be pressed to move a part of the top of the liquid gasket to the base side of the liquid gasket. Specifically, for example, as shown in FIG. 20, in a cross section perpendicular to the direction in which the liquid gasket extends, by pressing the end side of the top of the liquid gasket, recesses 305 are formed at both ends of the top of the gasket 30E. It may be formed.

  Moreover, in this embodiment, although the recessed part 305 was formed in the above-mentioned intermediate part among the top parts of the gasket 30E, you may form not only in this but in the area | regions other than the above-mentioned intermediate part among the top parts of the gasket 30E. Good. In this case, for example, in the above-described intermediate portion of the top portion of the gasket 30E, the number of the recessed portions 305 to be formed or the height of the recessed portion 305 is increased as compared with the region other than the above-described intermediate portion in the top portion of the gasket 30E. At least one of the dimension h5 and the width dimension w5 is increased. By doing in this way, since the restoring force with respect to the pressing force added to the gasket 30E can be made small compared with another area | region in the above-mentioned intermediate part, there can exist an effect similar to the effect mentioned above.

  Moreover, in this embodiment, the recessed part 305 was formed in the top part of the gasket 30E. However, the present invention is not limited to this, and gaskets may be stacked in a plurality of stages as in the fifth embodiment, and the recess 305 may be formed on the top of the uppermost gasket.

  In the present embodiment, at least one of the height dimension and the width dimension of the gasket 30 </ b> E may be reduced as the distance from the female screw 43 increases.

  In the present embodiment, the direction in which the recess 305 is formed may be the direction in which the gasket 30E extends, or the direction perpendicular to the direction in which the gasket 30E extends.

  In the present embodiment, the depth of the groove 14E is constant regardless of the distance from the female screw 43. However, the depth is not limited to this. For example, the groove 14E is separated from the female screw 43 in the same manner as the groove 14 according to the first embodiment. You may deepen according to.

  In the present embodiment, the bottom wall 141E is parallel to a region facing the groove 14E in the lid member 20 fastened to the case member 10C in a cross section perpendicular to the direction in which the groove 14E extends. However, the present invention is not limited to this, and the bottom wall portion 141E is inclined into a V shape or a U shape similarly to the bottom wall portion 141A according to the second embodiment, and this inclination is increased as the distance from the female screw 43 increases. Also good. Moreover, the groove part 14E is comprised by several groove part similarly to the groove part 14D which concerns on 3rd Embodiment, and at least any one of a depth dimension and a width dimension is made into the internal thread 43 about at least 1 among these several groove parts. You may enlarge as you leave.

  Moreover, in this embodiment, the groove part 14E was formed in the top part of the side wall part 13, and the gasket 30E was formed in the groove part 14E. However, the present invention is not limited to this, and as described in the first embodiment, for example, the groove 14E is formed in the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13. Also good. Further, as described above in the first embodiment, the groove 14E is formed in one of the top of the side wall 13 and the region of the lid member 20 that faces the top of the side wall 13 and the gasket 30E is formed in the other. May be formed. Further, the groove portion 14E is not formed in any of the top portion of the side wall portion 13 and the region facing the top portion of the side wall portion 13 in the lid member 20, and the gasket 30E is replaced with the top portion of the side wall portion 13 and the lid member 20. You may form in any of the area | region which opposes the top part of the side wall part 13 among these.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes a design that does not depart from the gist of the present invention.

1, 1A, 1B, 1C, 1D, 1E, 1F, 1G Airtight container 10, 10A, 10B, 10C Case member 13 Side wall portion 14, 14A, 14D, 14E Groove portion 14B First groove portion 14C Second groove portion 20 Lid member 30, 30A, 30B, 30C, 30D, 30E, 301, 302 Gasket 40 Screw 41 Male screw 42 Through hole 43 Female screw 304, 305 Recessed

Claims (16)

A plurality of fastenings in which the first part and the second part are arranged to face each other with a gasket in which a liquid gasket is cured interposed therebetween, and are spaced apart in the extending direction of the gasket. It is a seal structure that forms a sealed structure by pressing the gasket by fastening with a member,
A sealing structure characterized in that a restoring force with respect to a pressing force for pressing the gasket is smaller on the intermediate part side of a plurality of fastening members adjacent in the extending direction of the gasket than in the vicinity of the fastening member. The first component includes a groove in a region where the gasket is interposed,
The seal structure according to claim 1, wherein a cross-sectional area of the groove portion in a cross section perpendicular to the extending direction of the groove portion is larger on the intermediate portion side than in the vicinity of the fastening member.   The seal structure according to claim 2, wherein a depth of the groove portion is made deeper on the intermediate portion side than a vicinity of the fastening member.   The groove bottom of the groove part is parallel to a region facing the groove part in the second part in a cross section perpendicular to the extending direction of the groove part. Seal structure. The groove bottom of the groove part has a slope with respect to a region facing the groove part in the second component in a cross section perpendicular to the extending direction of the groove part,
4. The seal structure according to claim 2, wherein the inclination is increased on the intermediate portion side from the vicinity of the fastening member. 5. The groove portion includes a first groove portion formed in a region where the gasket is interposed, and a second groove portion formed in a groove bottom of the first groove portion,
3. The seal according to claim 2, wherein a cross-sectional area of the second groove portion in a cross section perpendicular to the extending direction of the second groove portion is larger on the intermediate portion side than the vicinity of the fastening member. Construction.   The seal structure according to any one of claims 1 to 6, wherein a height dimension or a width dimension of the gasket is made smaller on the intermediate portion side than the vicinity of the fastening member. The gasket is formed by stacking a plurality of gaskets,
The seal structure according to claim 7, wherein at least one of the plurality of gaskets has a height dimension or a width dimension that is smaller on the intermediate portion side than the vicinity of the fastening member. A slit is formed at the top of the gasket,
9. The seal structure according to claim 1, wherein the number of the slits is increased on the intermediate portion side than the vicinity of the fastening member. A recess is formed at the top of the gasket,
9. The seal structure according to claim 1, wherein a depth dimension or a width dimension of the concave portion is made larger on the intermediate portion side than in the vicinity of the fastening member. A plurality of fastenings in which the first part and the second part are arranged to face each other with a gasket in which a liquid gasket is cured interposed therebetween, and are spaced apart in the extending direction of the gasket. It is a sealing method that forms a sealed structure by pressing the gasket by fastening with a member,
Applying a liquid gasket to the first part or the second part,
In the step, the application thickness or the application width of the liquid gasket is made smaller on the intermediate side of the plurality of fastening members adjacent in the direction in which the gasket extends than the vicinity of the fastening member. Method.   In the step, the liquid gaskets are stacked and applied in a plurality of stages, and the application thickness or the application width of at least one of the liquid gaskets of the plurality of stages is set to the intermediate part side from the vicinity of the fastening member. The sealing method according to claim 11, wherein the sealing method is made smaller. In the process,
While moving the discharge part in the direction of extending the gasket, by discharging the liquid gasket from the discharge part, apply the liquid gasket,
The amount of the liquid gasket discharged from the discharge unit per unit time or the amount of movement of the discharge unit per unit time is reduced on the intermediate portion side from the vicinity of the fastening member. 13. The sealing method according to 12. A plurality of fastenings in which the first part and the second part are arranged to face each other with a gasket in which a liquid gasket is hardened interposed therebetween, and are arranged at intervals in the extending direction of the gasket. It is a sealing method that forms a sealed structure by pressing the gasket by fastening with a member,
A first step of applying a liquid gasket to the first part or the second part;
A second step of forming a slit at the top of the liquid gasket before the liquid gasket is cured;
In the second step, a large number of slits are formed on the intermediate part side of a plurality of fastening members adjacent in the direction in which the gasket extends from the vicinity of the fastening member. A plurality of fastenings in which the first part and the second part are arranged to face each other with a gasket in which a liquid gasket is hardened interposed therebetween, and are arranged at intervals in the extending direction of the gasket. It is a sealing method that forms a sealed structure by pressing the gasket by fastening with a member,
A first step of applying a liquid gasket to the first part or the second part;
A second step of removing at least a portion of the top of the liquid gasket before the liquid gasket is cured;
In the second step, a large amount of the liquid gasket is removed from the vicinity of the fastening member on the intermediate part side of a plurality of fastening members adjacent in the direction in which the gasket extends. A plurality of fastenings in which the first part and the second part are arranged to face each other with a gasket in which a liquid gasket is hardened interposed therebetween, and are arranged at intervals in the extending direction of the gasket. It is a sealing method that forms a sealed structure by pressing the gasket by fastening with a member,
A first step of applying a liquid gasket to the first part or the second part;
A second step of pressing the liquid gasket and moving at least a part of the top of the liquid gasket to the base side of the liquid gasket before the liquid gasket is cured;
In the second step, the amount of the liquid gasket to be moved to the base side is increased on the intermediate part side of the plurality of fastening members adjacent to each other in the direction in which the gasket is extended from the vicinity of the fastening member. How to seal.

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