JP5393842B2 - Sealed container seal structure - Google Patents

Description

  The present invention relates to a sealed container seal structure.

  A sealed container for sealing a substance is made of a material that cannot transmit a substance to be sealed and has an opening for taking in and out the substance, and a container body that provides a substance holding space for holding the substance put in from the opening; A lid that is made of a material that is not permeable to the substance and that is detachably disposed in the opening of the container body and closes the opening; and a portion that surrounds the opening on the outer surface of the container body or an inner periphery of the opening and the lid When the lid is interposed between the opening of the container body and the lid is pressed by the lid, a portion surrounding the opening on the outer surface of the container body or a gap between the inner periphery of the opening and the lid is sealed. And a sealing member.

  The sealing member is often made of an elastic material such as synthetic rubber.

  When the substance is a liquid or a gas, when the substance touches the sealing member, the sealing member may swell and the elasticity of the sealing member may decrease. If the pressure in the sealed container increases at this time, the sealing member is compressed by the pressure increase, and the sealing effect of the gap by the sealing member is reduced.

  In order to prevent a decrease in the sealing effect, it is sufficient to increase the force with which the sealing member is pressed against the outer surface of the container body on the part surrounding the opening or the inner periphery of the opening. A large frictional resistance between the sealing member and the outer surface of the container body surrounding the opening or the inner periphery of the opening, or between the lid and the container body surface where the lid comes into contact. Become. As a result, it becomes difficult to remove the lid from the opening of the container body, or the lid, the sealing member, the outer surface of the container body, the portion surrounding the opening, the inner peripheral surface of the opening, or the surface of the container body. There is a possibility that the force applied to the portion where the lid comes into contact increases and these are damaged.

  An example of such a sealed container is a spray device for spraying an organic solvent.

  The present invention has been made under the above circumstances, and an object of the present invention is not to reduce the sealing effect of the sealing member, and to make it difficult to remove the lid from the opening of the container body. It is to provide a sealed container sealing structure that can eliminate the possibility of damaging a portion pressed against the sealing member or the lid on the surface of the sealing member.

  In order to achieve the above-mentioned object of the present invention, a sealed container seal structure according to the present invention is made of a material that cannot transmit a substance to be sealed, has an opening for taking in and out the substance, and is inserted through the opening. A container body that provides a substance holding space for holding the substance; and an in-opening arrangement portion that is made of a material that does not allow the substance to pass through and is disposed in the opening of the container body By disposing, the outer peripheral surface of the container main body has an opening peripheral edge facing the peripheral edge of the opening surrounding the peripheral edge of the opening. A lid that closes the opening by facing the opening peripheral edge of the opening on the outer surface and is detachably fixed to the opening; A sealed container sealing structure for sealing a gap between the opening and the lid of the container body.

  The sealed container sealing structure according to the present invention includes: an annular sealing member that is formed of an elastic material and is disposed along the outer periphery of the inside opening portion of the lid; The ring is made of a material that does not change its size depending on the substance, is arranged along the inner periphery of the opening, and the sealing member is covered when the inner portion of the opening is arranged in the opening of the container body. Pressing the outer periphery of the portion disposed in the opening and pressing on the peripheral edge portion of the opening, and further, the sealing member is more than half the dimension of the sealing member in the direction along the center line of the opening. And a sealing member holding body covering from the outside in the direction.

  In the sealed container seal structure according to the present invention, characterized in that it is configured as described above: When the inner opening portion of the lid is placed in the opening of the container body in order to close the opening of the container body with the lid, it is elastic. An annular sealing member that is formed of a material having a shape and is disposed along the outer periphery of the portion in the opening of the lid that does not allow the substance held in the substance holding space of the container body to pass therethrough and changes the size by the substance. It is pressed on the outer periphery of the inner part of the opening of the lid and on the peripheral part of the opening by the sealing member holding body formed in a ring shape with no material and arranged along the inner periphery of the opening. The The sealing member holder further covers the sealing member from the outside of the opening in the radial direction over half the dimension of the sealing member in the direction along the center line of the opening of the lid.

  When the sealing member holding body is disposed within the opening of the container body in order to close the opening of the container body with the lid, the lid follows the sealing member in the opening in the opening of the lid. Prevents compression to more than half of the dimension of the sealing member in the direction, generates excessive frictional resistance between the lid, the sealing member, and the sealing member holder, or the lid contacts the surface of the lid and the container body. Prevents excessive pressing force on the part.

  It is possible to eliminate the difficulty of removing the lid from the opening of the container body, and to eliminate the possibility of damaging the lid, the sealing member, and the portion pressed by the sealing member on the surface of the container body. Moreover, even if the sealing member is swollen by the substance held in the substance holding space of the container main body and the elasticity is reduced, and the pressure in the substance holding space is further increased, the sealing member is in the direction along the center line of the opening. Since it is not compressed to more than half of the dimension of the sealing member, the sealing member does not create a gap between the inner periphery of the opening of the container body and the outer periphery of the inner opening portion of the lid, and the sealing member is sealed. The effect is not reduced.

1A is an external view of a spray device as an example of a sealed container provided with a sealed container seal structure according to an embodiment of the present invention; FIG. FIG. 2 is a longitudinal cross-sectional view taken along the line B-B of the portion using the sealed container seal structure in the spray device of A); and FIG. 1C is a view in FIG. FIG. 5 is a further enlarged view of the hermetically sealed container seal structure in a region C surrounded by a circle line drawn with a one-dot chain line in FIG.

  Hereinafter, a sealed container 12 and a sealed container seal structure 10 that employ a sealed container seal structure 10 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1A to 1C. .

  An appearance of a spray device as an example of a sealed container 12 that employs a sealed container seal structure 10 according to an embodiment of the present invention is shown in FIG. 1A, and the spray device of FIG. An enlarged longitudinal section of the part using the sealed container seal structure in the device is shown in FIG.

  The sealed container 12 includes an opening 12a for taking in and out a substance, and a container main body 15 that provides a substance holding space for holding the substance 14 put through the opening 12a. The substance 14 held by the container body 15 of the spray device as an example of the sealed container 12 is a substance that swells a synthetic rubber constituting a conventional sealing member and reduces its elasticity. For example, various organic solvents are included.

  However, the substance held in the substance holding space of the container main body 15 is not limited to this, and the container main body 15 is not damaged even if it is held in the container main body 15, and the above spray device is used. Anything can be used as long as it can be sprayed.

  In this embodiment, the container body 15 has a substance holding member 12b in which an opening 12a is actually formed and a substance holding space is formed, and a cylindrical attachment mounting member 12c surrounding the opening 12a. Yes. In this embodiment, the attachment mounting member 12c is configured by combining a plurality of cylindrical members. A plurality of cylindrical members and the periphery of the opening 12a on the outer surface of the substance holding member 12b are fixed to each other so that they can be attached to and detached from each other through an annular elastic sealing member SM such as an O-ring. Has been. These mutually detachable fixings are achieved by screwing in this embodiment.

  The plurality of cylindrical members of the substance holding member 12b and the attachment mounting member 12c are made of a material that cannot transmit the substance 14 to be sealed, and in this example, are injection-molded with a certain kind of synthetic resin.

  A structure in which a plurality of cylindrical members of a cylindrical attachment mounting member 12c are detachably fixed to an opening 12a of a substance holding member 12b via a plurality of elastic sealing members SM is conventionally known. In this conventional detachable fixing structure, substances such as various organic solvents that swell the conventional elastic sealing member SM as described above and reduce its elasticity in the substance holding space of the substance holding member 12b are held. Furthermore, even if a pressure sufficient to withstand the substance holding member 12b and the attachment mounting member 12c of the container main body 15 is applied to the substance holding space, it can be reliably held in the substance holding space without causing leakage. It has been proven.

  On the outer surface of the cylindrical member that provides the outer surface of the attachment mounting member 12c in the plurality of cylindrical members of the attachment mounting member 12c, a grip handle 12e that can be gripped by the operator of the spray device with one hand is provided. It protrudes outward and is fixed.

  A known nozzle unit 18 communicating with the central opening 12d of the attachment mounting member 12c is further attached to the outer surface of the cylindrical member that provides the outer surface of the attachment mounting member 12c. The grip handle 12e is provided with a nozzle unit operation lever 12f for performing an on / off operation of the nozzle unit 18.

  The sealed container 12 is further detachably fixed to the opening 12a of the substance holding member 12b of the container body 15, and in this embodiment, to the central opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b. It includes a lid 16 that covers the central opening 12d and thus the opening 12a.

  1B between the opening 12a of the substance holding member 12b of the container body 15, in this embodiment, the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b, and the lid 16 in FIG. ) In an area C surrounded by a circle surrounded by an alternate long and short dash line, an attachment that surrounds the opening 12a of the substance holding member 12b of the container body 15, in this embodiment, the opening 12a of the substance holding member 12b is attached. A sealed container seal structure 10 that seals a gap between the center opening 12d of the member 12c and the lid 16 is interposed. Details of the sealed container seal structure 10 will be described later in detail with reference to FIG.

  In this example, the lid 16 incorporates a pump unit 20 disposed in a central opening 12d of an attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. The pump unit 20 pressurizes the substance 14 held in the substance holding space of the substance holding member 12b, and communicates the pressurized substance 14 to the central opening 12d of the attachment mounting member 12c. Configured to lead to.

  The pump unit 20 includes a cylindrical cylinder member 20a disposed in the opening 12a of the substance holding member 12b via the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. The piston member 20b is incorporated in the cylinder member 20a so as to be reciprocally movable in the longitudinal direction of the cylinder member 20a. The cylinder member 20a extends from the center opening 12d of the attachment mounting member 12c to the vicinity of the bottom of the substance holding space of the substance holding member 12b and into the substance holding space. And an extended end immersed in the retained substance 14. The piston member 20b is reciprocated in the longitudinal direction of the cylinder member 20a to pressurize the outside air and send it into the substance holding space of the substance holding member 12b.

  In this embodiment, the lid 16 has an inner periphery of the central opening 12d of the attachment mounting member 12c in which the outer peripheral surface of the base end portion of the cylinder member 20a of the pump unit 20 surrounds the opening 12a of the substance holding member 12b of the container body 15. By being screwed to the surface, the container body 15 is detachably fixed to the opening 12a of the substance holding member 12b.

  The cylinder member 20a guides the substance 14 pressurized as described above in the substance holding space of the substance holding member 12b of the container body 15 to the aforementioned known nozzle unit 18 communicating with the central opening 12d of the attachment mounting member 12c. A pressurized substance feed passage (not shown) is formed.

  The substance 14 that has been pressurized as described above in the substance holding space of the substance holding member 12b of the container body 15 and sent to the nozzle unit 18 through the above-described pressurized substance feed passage (not shown) of the cylinder member 20a is attached to the attachment. By operating the nozzle unit operation lever 12f of the grip handle 12e of the member 12c, the spray is sprayed into the external space through the nozzle unit 18, and this spraying is stopped.

  The cylinder member 20a of the pump unit 20 incorporated in the lid 16 has an external space protruding area protruding from the central opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 into the external space. 20c is further included. A known safety valve unit 22 communicated with the above-described pressurized substance feed passage (not shown) is attached to the outer space protruding area 20c of the cylinder member 20a. The safety valve unit 22 is automatically opened when the pressure of the pressurized substance 14 in the pressurized substance feed passage (not shown) mentioned above becomes larger than a predetermined value, and is not shown in the figure. The pressurized substance 14 is discharged from the pressurized substance feed passage into the external space. As a result, the pressure of the pressurized substance 14 in the aforementioned pressurized substance feed passage (not shown) becomes larger than a predetermined value, and the pump unit having the aforementioned pressurized substance feed path (not shown). The 20 cylinder members 20a, and hence the substance holding member 12b of the container body 15 are reliably prevented from being damaged.

  The lid 16 in which the pump unit 20 is incorporated is also made of a material that does not allow the substance 14 to pass through. In this example, the lid 16 is injection-molded with a certain kind of synthetic resin.

  In this example, in the cylinder member 20 a of the pump unit 20 incorporated in the lid 16, the container body 15 has a central opening 12 d that surrounds the opening 12 a of the substance holding member 12 b of the container body 15. The base end portion and the extended end portion arranged in the substance holding space of the substance holding member 12b constitute an in-opening arrangement portion. Further, the outer space protruding area 20c of the cylinder member 20a has an opening peripheral portion surrounding the periphery of the opening 12a on the outer surface of the substance holding member 12b of the container body 15, in this example, the central opening 12d on the outer surface of the attachment mounting member 12c. It has the opening peripheral part 20d facing the opening peripheral part 12g which surrounds.

  A lid 16 in which such a pump unit 20 is incorporated is known.

  Next, details of the sealed container seal structure 10 according to the embodiment of the present invention will be described with reference to FIG. 1C in addition to FIG.

  The sealed container sealing structure 10 includes an annular sealing member 10a that is formed of an elastic material and is disposed along the outer periphery of the above-described in-opening portion of the cylinder member 20a of the pump unit 20 of the lid 16. In this embodiment, the annular sealing member 10a is constituted by a known O-ring, and the opening peripheral edge facing portion 20d of the outer space protruding area 20c of the cylinder member 20a is formed on the outer periphery of the above-mentioned opening inner portion. Located in the intersection area.

  Further, the sealed container seal structure 10 is formed in a ring shape with a material that does not allow the substance 14 to permeate and does not change its size, and is disposed along the inner periphery of the opening 12 a of the substance holding member 12 b of the container body 15. A member holding body 10b is provided. In this embodiment, the annular sealing member holding body 10b is injection-molded with a certain kind of synthetic resin, and the inside of the central opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 is used. In the periphery, on the outer periphery of the aforementioned proximal end portion of the aforementioned cylinder opening portion 20a of the cylinder member 20a of the pump unit 20 of the lid 16, the portion adjacent to the opening peripheral edge facing portion 20d of the outer space protruding area 20c of the cylinder member 20a It is arranged to face. The material of the sealing member holding body 10b has elasticity smaller than that of the material of the sealing member 10a.

  A part of the outer peripheral surface of the sealing member holding body 10b is formed in an annular shape extending in the circumferential direction of the outer peripheral surface, and protrudes outward in the radial direction of the outer peripheral surface from the other part of the outer peripheral surface. have. The annular protrusion 10c on the outer peripheral surface of the sealing member holding body 10b is formed in the container body 15 in this embodiment when the sealing member holding body 10b is arranged along the inner periphery of the opening 12a of the substance holding member 12b of the container body 15. This embodiment is arranged on the inner periphery of the opening 12a of the substance holding member 12b of the container body 15 when arranged along the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b. Then, it contacts the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15.

  The cross section of the outer peripheral surface of the sealing member holding body 10b has a tapered shape with the annular protruding portion 10c as the apex, as clearly shown in FIG.

  The inner periphery of the opening 12a of the substance holding member 12b of the container body 15, that is, the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 in this embodiment, A step portion 12h for positioning the sealing member holding body 10b in the direction along the center line of the opening 12d is formed.

  At the step portion 12h, the sealing member holding body 10b extends along the inner periphery of the opening 12a of the substance holding member 12b of the container body 15, and in this embodiment, the attachment is attached surrounding the opening 12a of the substance holding member 12b of the container body 15 When arranged along the inner periphery of the central opening 12d of the member 12c, the sealing member holding body 10b is opposite to the opening peripheral edge facing portion 20d of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16 in the sealing member holder 10b. When the inner end surface, which is the opposite side portion facing the contact, comes into contact, the sealing member holding body 10b is positioned in the direction along the center line of the central opening 12d of the attachment mounting member 12c.

  At this time, the outer end surface of the sealing member holding body 10b facing the opening peripheral edge facing portion 20d of the outer space projecting area 20c of the cylinder member 20a of the pump unit 20 of the lid 16 has the opening 12a of the substance holding member 12b of the container main body 15. It protrudes outward in the direction along the center line of the central opening 12d from the opening peripheral portion 12g surrounding the central opening 12d of the surrounding attachment mounting member 12c.

  An annular recess 10d centered on the center of the sealing member holding body 10b is formed on the inner end surface of the sealing member holding body 10b.

  As shown in FIGS. 1B and 1C, the above-mentioned opening arrangement portion of the cylinder member 20 a of the pump unit 20 of the lid 16 is the opening 12 a of the substance holding member 12 b of the container body 15. After being inserted into the center opening 12d of the attachment mounting member 12c surrounding the cylinder, the outer periphery of the aforementioned base end portion of the above-mentioned in-opening arrangement portion of the cylinder member 20a of the pump unit 20 is the substance holding member 12b of the container body 15. The lid 16 is detachably fixed to the opening 12a of the substance storage member 12b of the container body 15 by being screwed into the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a.

  At this time, the inner peripheral surface of the sealing member holding body 10b serves as the sealing member 10a, and the outside of the cylinder member 20a outside the base end portion of the cylinder member 20a of the pump unit 20 of the lid 16 at the outer peripheral portion of the aforementioned opening portion. The space protruding area 20c is pressed against the intersection region intersecting the opening peripheral edge portion 20d, and as a result, the sealing member 10a is pressed on the outer peripheral base end portion and also on the opening peripheral edge portion 20d. . At the same time, the inner periphery of the opening 12a of the substance holding member 12b of the container main body 15, that is, the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container main body 15 in this embodiment. The contact force of the inner end surface which is the opposite side portion of the sealing member holding body 10b to the stepped portion 12h is increased. That is, the degree of sealing between the inner peripheral surface of the step 12h on the inner periphery of the center opening 12d of the attachment mounting member 12c and the inner end surface which is the opposite side portion of the sealing member holding body 10b is improved.

  As described above, the lid 16 is detachably attached to the opening 12a of the substance holding member 12b of the container body 15, in this embodiment, the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. When fixed, the sealing member holding body 10b covers the sealing member 10a from the outside in the radial direction of the opening 12a over half of the dimension of the sealing member 10a in the direction along the center line of the opening 12a.

  In this embodiment, the inner peripheral surface of the sealing member holding body 10b includes a first region IS1 adjacent to the opening peripheral surface portion 20d of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16, and the first region IS1. The second region IS2 is located on the opposite side of the opening peripheral edge portion 20d of the lid 16 in the direction along the center line of the inner peripheral surface with respect to the region IS1.

  And 1st area | region IS1 is formed in the taper shape which expands a diameter, when approaching the opening periphery facing part 20d of the external space protrusion area 20c of the cylinder member 20a of the pump unit 20 of the lid | cover 16. As shown in FIG. The tapered first region IS1 has a central opening 12d of the attachment mounting member 12c in which the above-described arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 surrounds the opening 12a of the substance holding member 12b of the container body 15. Of the attachment mounting member 12c in which the outer periphery of the base end portion of the cylinder opening portion of the cylinder member 20a of the pump unit 20 surrounds the opening 12a of the substance holding member 12b of the container body 15. The sealing member 10a is screwed into the inner periphery of the center opening 12d, so that the outer periphery of the cylinder member 20a is formed on the outer periphery of the base end portion of the cylinder member 20a of the pump unit 20 of the lid 16 at the outer periphery of the above-described base end portion. When pressing on the intersection region with the opening peripheral edge portion 20d of the space protruding area 20c Pressed elastically compressed monitor opening peripheral face portion 20d on.

  The second region IS2 has a diameter larger than the smallest diameter in the first region IS1, and forms a step portion 10e with the first region IS1.

  The outer periphery of the aforementioned proximal end portion of the above-described opening arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 is the same as that of the container body 15 of the above-described arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16. After being inserted into the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b, the outside of the aforementioned proximal end portion of the above-described opening arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 The periphery is screwed into the inner periphery of the center opening 12d of the attachment mounting member 12c that surrounds the opening 12a of the substance holding member 12b of the container body 15, and the cylinder member 20a of the pump unit 20 of the lid 16 in the sealing member holding body 10b. The outer end of the outer space protruding section 20c of the outer surface facing the opening peripheral edge facing portion 20d On the other hand, when the opening peripheral edge facing portion 20d of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16 contacts, the pump of the lid 16 rather than the step portion 10e on the inner peripheral surface of the sealing member holding body 10b. The cylinder member 20a of the unit 20 is located at a position far from the opening peripheral surface portion 20d of the outer space protruding area 20c of the cylinder member 20a of the cylinder unit 20a of the pump unit 20 in the direction along the center line of the outer periphery of the above-described inner opening portion. The protrusion 20e to be disposed is included.

  The protrusion 20e is formed in the radial direction of the center line of the above-described opening arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 and of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. In the radial direction of the center line of the central opening 12d, it projects outward and has a larger dimension than the step portion 10e on the inner peripheral surface of the sealing member holding body 10b in the radial direction.

  The protrusion 20e is inserted into the center opening 12d of the attachment mounting member 12c in which the above-described arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 surrounds the opening 12a of the substance holding member 12b of the container body 15. The aforementioned base end portion of the above-mentioned in-opening portion of the cylinder member 20a of the pump unit 20 is screwed into the inner periphery of the central opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. As a result, the stepped portion 10e is slidably brought into contact with the tapered first region IS1 on the inner peripheral surface of the sealing member holding body 10b, and the stepped portion 10e passes through the stepped portion 10e after being elastically expanded by the elasticity of the material. . The stepped portion 10e of the sealing member holding body 10b after passing through the protrusion 20e returns to the dimension before passing through the stepped portion 10e due to the elasticity of the material.

  As shown in FIG. 1C, the container body 15 is positioned on the inner peripheral step 12b of the center opening 12d of the attachment attachment member 12c surrounding the opening 12a of the substance holding member 12b. The sealing member holding body 10b is in a direction along the center line of the opening 12a when the outer peripheral surface 20d of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16 contacts the outer end surface. The whole dimension of the sealing member 10a is covered from the outside of the opening 12a in the radial direction.

  The above-mentioned contact is based on the above-described proximal end of the above-described opening-inside opening portion of the cylinder member 20a of the pump unit 20 with respect to the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15. Prevent further screwing around the outside of the part. For this purpose, the sealing member 10a between the tapered first region IS1 on the inner periphery of the sealing member holding body 10b and the opening peripheral surface portion 20d of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16 is provided. This prevents the sealing member 10a from being damaged due to further compression.

  The contact further includes the inner periphery of the opening 12a of the substance holding member 12b of the container body 15, and the inner periphery of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 in this embodiment. Further, the contact force of the inner end surface which is the opposite side portion of the sealing member holding body 10b to the step portion 12h is further strengthened. That is, the degree of sealing between the inner peripheral surface which is the opposite side portion of the sealing member holding body 10b and the step 12h on the inner periphery of the center opening 12d of the attachment mounting member 12c is further improved. The annular recess 10d on the inner end surface, which is the opposite side portion of the sealing member holding body 10b, is the opposite side portion of the sealing member holding body 10b with respect to the inner peripheral step 12h of the center opening 12d of the attachment mounting member 12c. The abutting area of the inner end surface is reduced, and as a result, the sealing degree of the inner end surface which is the opposite side portion of the sealing member holding body 10b to the inner peripheral step portion 12h of the center opening 12d of the attachment mounting member 12c is increased. Further improve.

  When the pressure in the substance holding space of the container main body 15 is increased by the pump unit 20 of the lid 16, the sealing member holding body 10b on the step 12h inside and around the center opening 12d of the attachment mounting member 12c is expanded by its elastic force. The annular protrusion 10c on the outer peripheral surface of the tapered shape is attached to the inner periphery of the opening 12a of the substance holding member 12b of the container body 15, in this embodiment, the attachment 12a surrounding the opening 12a of the substance holding member 12b of the container body 15 The mounting member 12c is brought into contact with and in close contact with the inner periphery of the center opening 12d.

  However, the annular recess 10d on the inner end surface, which is the opposite side portion of the sealing member holding body 10b, is formed on the sealing member holding body 10b with respect to the inner peripheral step 12h of the center opening 12d of the attachment mounting member 12c. The contact area of the inner end surface which is the opposite side portion is reduced, and the annular protrusion of the tapered outer peripheral surface of the sealing member holding body 10b on the inner peripheral step 12h of the central opening 12d of the attachment mounting member 12c The portion 10c also reduces the contact area of the outer peripheral surface of the sealing member holding body 10b with respect to the inner periphery of the center opening 12d of the attachment mounting member 12c, and thus effectively prevents these so-called sticking due to the pressure increase described above. ing.

  The outer periphery of the aforementioned proximal end portion of the aforementioned inner opening portion of the cylinder member 20a of the pump unit 20 with respect to the inner periphery of the central opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 When the above-described screwing is loosened, the above-described in-opening portion of the cylinder member 20a of the pump unit 20 of the lid 16 is located at the center of the central opening 12d of the attachment mounting member 12c so as to be detached from the central opening 12d of the attachment mounting member 12c. It moves along the line in a direction away from the substance holding space of the container body 15. As a result, the aforementioned outer end surface of the sealing member holding body 10b positioned on the inner peripheral step 12b of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 A gap is formed in the direction along the center line of the center opening 12d of the attachment attachment member 12c between the opening 16 and the opening peripheral edge facing portion 20d of the external space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16.

  During this time, the inner peripheral surface of the sealing member holding body 10b positioned on the inner peripheral portion 12b of the center opening 12d of the attachment mounting member 12c surrounding the opening 12a of the substance holding member 12b of the container body 15 is provided. The protrusion 20e on the outer periphery of the base end portion of the above-described opening arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16 approaches the stepped portion 10e, and surrounds the opening 12a of the substance holding member 12b of the container body 15. In the direction along the center line of the center opening 12d of the attachment attachment member 12c, the contact and engagement are made. During this abutment, that is, engagement, the tapered first region IS1 on the inner peripheral surface of the sealing member holding body 10b is an opening peripheral portion of the outer space protruding area 20c of the cylinder member 20a of the pump unit 20 of the lid 16. The sealing member 10a continues to elastically press the sealing member 10a in cooperation with 20d, and the sealing member holder 10b still keeps the sealing member 10a at least half the dimension of the sealing member 10a in the direction along the center line of the opening 12a. Cover from the outside in the radial direction. Then, the sealing member 10a is caused by the pressure in the substance holding space of the substance holding member 12b of the container body 15 so that the outer end surface 20c of the cylinder member 20a of the pump unit 20 of the pump unit 20 of the lid 16 and the outer end surface of the sealing member holding body 10b. It is reliably prevented from jumping out from the above-described gap formed between the opening peripheral edge portion 20d.

  In the above-described contact, that is, engagement, and thereafter, the sealing member holding body 10 opens the opening of the substance holding member 12b of the container body 15 together with the above-described arrangement portion in the opening of the cylinder member 20a of the pump unit 20 of the lid 16. It moves toward the outer space of the container body 15 along the center line of the central opening 12d with respect to the inner periphery of the central opening 12d of the attachment mounting member 12c surrounding the 12a, and is drawn out into the outer space. Also during this time, the above-described abutment, that is, engagement, of the protrusion 20e on the outer periphery of the base end portion of the cylinder member 20a of the pump unit 20 of the lid 16 with respect to the step portion 10e of the sealing member holder 10b. Therefore, the sealing member holding body 10b is not separated from the outer periphery of the base end portion of the above-described opening arrangement portion of the cylinder member 20a of the pump unit 20 of the lid 16.

  After the above-described contact, that is, engagement, the sealing member holding body 10b from the inner peripheral step 12b of the center opening 12d of the attachment mounting member 12c that surrounds the opening 12a of the substance holding member 12b of the container body 15 is provided. The inner end face described above is separated, and the annular projecting portion 10c of the tapered outer peripheral surface of the sealing member holding body 10b is the inner periphery of the opening 12a of the substance holding member 12b of the container body 15, in this embodiment, the container body 15 of the container body 15. The attachment holding member 12c surrounding the opening 12a of the substance holding member 12b is detached from the inner periphery of the center opening 12d to the external space.

  At this time, as described above, the annular recess 10d on the inner end surface which is the opposite side portion of the sealing member holding body 10b due to the pressure increase described above is the step 12h on the inner periphery of the center opening 12d of the attachment mounting member 12c. So as to effectively prevent so-called sticking of the inner end surface, which is the opposite side portion of the sealing member holding body 10b, and hold the sealing member on the step 12h on the inner periphery of the center opening 12d of the attachment mounting member 12c. The annular protrusion 10c on the outer peripheral surface of the tapered shape of the body 10b also effectively prevents so-called sticking of the outer peripheral surface of the sealing member holding body 10b to the inner periphery of the central opening 12d of the attachment mounting member 12c. Can be done easily.

  DESCRIPTION OF SYMBOLS 10 ... Sealing container sealing structure, 10a ... Sealing member, 10b ... Sealing member holding body, 10c ... Annular protrusion, 10d ... Annular recess, 10e ... Step part, 12 ... Sealing container, 12a ... Opening, 12b ... Substance holding member (Container body), 12c ... attachment attachment member (container body), 12d ... center opening, SM ... elastic sealing member, 12e ... grip handle, 12f ... nozzle unit operation lever, 12g ... peripheral edge of opening, 12h ... step, 14 ... Substance, 15 ... Container body, 16 ... Lid, 18 ... Nozzle unit, C ... Area, 20 ... Pump unit, 20a ... Cylinder member, 20b ... Piston member, 20c ... External space protruding area, 20d ... Opening edge facing part, 20e ... projection, IS1 ... first region, IS2 ... second region, 22 ... safety valve unit.

Claims (5)

A container body that is made of a material that is impermeable to the substance to be sealed, has an opening for taking in and out the substance, and provides a substance holding space for holding the substance put in from the opening;
The peripheral portion of the opening is formed on the outer surface of the container body by arranging the in-opening arrangement portion and the in-opening arrangement portion, which are made of a material that cannot transmit the substance, and are arranged in the opening of the container body. An opening periphery facing portion that faces the surrounding opening periphery is disposed, and the opening in-opening portion is disposed in the opening of the container body, and the opening periphery facing portion is made to face the opening periphery of the outer surface of the container body. A lid that closes the opening by, and is detachably fixed to the opening;
A sealed container sealing structure for sealing a gap between an opening of a container body and a lid, wherein:
An annular sealing member formed of an elastic material and disposed along the outer periphery of the in-opening portion of the lid;
The material is formed in an annular shape with a material that does not allow permeation and does not change dimensions with the material, and is disposed along the inner periphery of the opening. When pressing, the sealing member is pressed on the outer periphery of the opening in-opening portion and on the peripheral edge of the opening, and the sealing member is sized in the direction along the center line of the opening. A sealing member holder that covers more than half of the opening from the outside in the radial direction;
A sealed container seal structure characterized by comprising: A part of the outer peripheral surface of the sealing member holding body is formed in an annular shape extending in the circumferential direction of the outer peripheral surface, and protrudes outward in the radial direction of the outer peripheral surface from the other part of the outer peripheral surface. Have
The annular protrusion on the outer peripheral surface of the sealing member holder contacts the inner periphery of the opening when the sealing member holder is disposed along the inner periphery of the opening of the container body.
The hermetic container seal structure according to claim 1, wherein:   The sealed container seal structure according to claim 2, wherein a cross-section of the outer peripheral surface of the sealing member holder has a tapered shape with the annular protrusion as a vertex. The sealing member holder has an elasticity smaller than that of the sealing member,
The inner peripheral surface of the sealing member holder includes a first region adjacent to an opening peripheral edge portion of the lid, and an opening peripheral edge portion of the lid in a direction along the center line of the inner peripheral surface with respect to the first region. A second region located on the opposite side,
The first region is formed in a tapered shape that increases in diameter as it approaches the opening peripheral edge portion of the lid, and when the in-opening arrangement portion of the lid is arranged in the opening of the container body Pressing the sealing member on the outer periphery of the opening in-open portion of the lid and pressing on the opening peripheral surface portion,
The second region has a diameter larger than the smallest diameter in the first region and forms a step portion with the first region,
In the outer periphery of the inner opening portion of the lid, when the inner opening portion of the lid is disposed in the opening of the container body, the sealing member holder is more than the stepped portion on the inner peripheral surface of the sealing member holder. Including a protrusion disposed inwardly in a direction along the center line of the inner peripheral surface of the inner peripheral surface and projecting outward in the radial direction of the center line,
The protrusion on the outer periphery of the inner opening portion of the lid holds the sealing member when the opening peripheral edge portion of the lid contacts the outer end surface of the sealing member holder facing the opening peripheral surface portion of the lid. It is arranged at a position farther from the opening peripheral edge portion of the lid in a direction along the center line of the outer periphery of the inner opening portion of the lid than the stepped portion of the inner peripheral surface of the body.
The sealed container seal structure according to any one of claims 1 to 3, wherein: When the sealing member holder is disposed along the inner periphery of the opening of the container body, the inner periphery of the opening of the container body faces the side opposite to the opening peripheral edge portion of the lid in the sealing member holder. A stepped portion that contacts the inner end face is formed,
An annular recess is formed on the inner end surface of the sealing member holder,
The sealed container seal structure according to any one of claims 1 to 4, wherein the sealed container seal structure is provided.

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