JP2011093594A - Pressure adjusting container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure adjusting container capable of solving increasing in the inner pressure in a container body by degassing to the outside to prevent a container from breaking, deforming or the like, and capable of corresponding variously to a shape of a sealing part between an opening neck part and a cap. <P>SOLUTION: The pressure adjusting container includes: the container body A in which a projection 14 for locking projects and peripherally provided on the outer periphery of the opening neck part 12; and a cap B having a laid-down dish-like shape in which a top wall 21 is extended from the upper end edge of a peripheral wall 20 fitted on the outer periphery of the opening neck part 12 and getting over and engaging a projection 22 for engagement projecting and peripherally provided on the inner periphery of the peripheral wall 20 to a projection 14 for locking. Between the top part of the opening neck part 12 and the lower surface of the cap B, a sealing part s intercepting the inside and the outside of the opening neck part 12 and being opened by elevating the cap B to the container body A is provided. A ventilation passage p which passes through between the opening neck part 12 and the peripheral wall 20 of the cap from a laid down position of the sealing part s and communicates to the outside from the lower end of the peripheral wall 20 of the cap, is formed. At least one of the projection 14 for locking and the projection 22 for engagement is formed of a flexible and elastic material. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pressure regulating container.

  There has been proposed a container having a degassing cap that eliminates an increase in internal pressure through an exhaust passage. (For example, see Patent Document 1)

  The gas vent cap described in Patent Document 1 includes a top plate and a side peripheral wall, and can be fitted to the container mouth portion through packing, and the top plate is formed into a thin wall having flexibility, A shallow V-shaped recess is disposed along the line. The bottom bottom surface of the recess is positioned above the middle of the end surface of the mouth. Further, a support part for holding the packing is formed at the inner peripheral upper end of the side peripheral wall, and a bulging ring is provided at the lower end, and a screw that is screwed into the screw of the mouth part is provided on the lower surface of the support part. Has been. When the container is opened and the cap is fitted again, and the content liquid is stored for a long period of time, the internal pressure rises due to changes in the internal solution, fermentation, etc. Thus, the upper surface of the packing pushes up the bottom lower surface of the top plate recess. The bottom bottom surface rotates upward with the connection edge of the side peripheral wall and the top plate as a support portion. Since the top plate is thin and flexible, the concave portion is deformed as a whole, and the central portion of the top plate rises. As a result, a gap is formed between the packing and the top of the mouth, and the gas and air in the container are discharged.

JP 2003-072815 A

  A conventional container using a degassing cap can eliminate the increase in internal pressure in the form of degassing to the outside, and can maintain a constant internal pressure, so that the container can be prevented from being damaged or deformed.

  Similarly, the present invention can eliminate the increase in internal pressure of the container body in the form of degassing to the outside to prevent damage, deformation, etc. of the container, and also supports various forms of the seal part between the mouth neck and cap We propose a pressure regulation container that can be used.

  The first means is configured as follows. That is, the mouth and neck part 12 stands up from the body part, and the container body A in which the locking protrusion 14 protrudes from the outer periphery of the mouth and neck part 12 and the upper end of the peripheral wall 20 fitted to the outer periphery of the mouth and neck part 12 And a cap B in which a top plate 21 is extended from the edge to form a concealed dish, and an engaging ridge 22 protruding from the inner periphery of the peripheral wall 20 is engaged with the engaging ridge 14 and engaged. Between the top of the portion 12 and the lower surface of the cap B, the inside and outside of the mouth and neck portion 12 is blocked, and a seal portion s that is opened when the cap B is raised with respect to the container body A is provided. The air passage p is formed between the lower end of the cap peripheral wall 20 and communicated to the outside from the lower end of the cap peripheral wall 20, and at least one of the locking protrusion 14 and the engaging protrusion 22 is made of a flexible and elastic material. Formed.

  The second means is configured as follows. That is, in the first means, the first sealing portion s1 in which the sealing portion s is suspended from the peripheral portion of the back surface of the cap top wall 21 and the inner peripheral upper end portion of the mouth neck portion 12 is closely fitted. The peripheral edge of the back surface of the cap top wall 21 is composed of the second seal portion s2 in close contact with the upper surface of the mouth / neck portion 12.

  The third means was configured as follows. That is, in any one of the first means and the second means, an annular fitting recess 16 is formed on the inner periphery of the cap peripheral wall 20, and the annular fitting recess 16 is fitted. The engaging ridge 22a is integrally provided on the inner surface of the fitting base 30, and a ridge forming member C formed of a flexible and elastic material is provided.

  The fourth means is configured as follows. That is, in any one of the first means and the second means, an annular fitting recess 24 is formed on the outer periphery of the mouth-and-neck portion 12, and the fitting is fitted into the fitting recess 24. A locking protrusion 14a is integrally provided on the outer surface of the base 30 and a protrusion forming member C formed of a flexible and elastic material is provided.

  The fifth means is configured as follows. That is, in any one of the third means and the fourth means, the venting path p is provided with the locking protrusion 14 and the engaging protrusion 22 provided at the position opposite to the protrusion forming member C. This is composed of a ventilation recess 15 or 25 that communicates between the upper and lower engagement parts, and a gap between the mouth-and-neck part 12 and the cap peripheral wall 20.

  According to the present invention, the increase in the internal pressure in the container body A can be eliminated in the form of degassing to the outside, so that the container can be prevented from being damaged, deformed, and the like, and the form of the seal portion between the mouth neck and the cap is also provided. It has the advantage of being able to respond to various needs. That is, the seal portion s is configured to block the inside and outside of the mouth and neck portion 12 between the top portion of the mouth and neck portion 12 and the lower surface of the cap B, and is opened when the cap B is raised with respect to the container body A. The seal part s of the form can be adopted and is rich in versatility.

  The first seal part s1 in which the seal cylinder 23, in which the seal part s is suspended from the peripheral part of the back surface of the cap top wall 21 is closely fitted to the upper end of the inner periphery of the mouth neck part 12, and the peripheral part of the back surface of the cap top wall 21 When the second seal portion s2 is in close contact with the upper surface of the portion 12, the seal portion has a double seal structure, so that sufficient air-tightness and liquid-tightness can be obtained at all times. Since the second seal portion s2 is easily detached when the height rises, the seal portion s can be smoothly opened even in the double seal structure.

  An annular fitting recess 16 is formed on the inner periphery of the cap peripheral wall 20, and an engaging protrusion 22a is integrally provided on the inner surface of the annular fitting base 30 fitted into the fitting recess 16, and is flexible. When the ridge forming member C formed of a material having high elasticity is provided and configured, an excessive deformation of the ridge forming member C can be restricted by the cap peripheral wall 20 on the outer surface of the fitting recess 16, and as a result. When the cap B is raised by the internal pressure, only the engaging protrusion 22a is appropriately elastically deformed and rises, and after the internal pressure is reduced, the original state can be quickly lowered.

  An annular fitting recess 24 is formed on the outer periphery of the mouth-and-neck portion 12, and a locking protrusion 14a is integrally provided on the outer surface of the fitting base 30 fitted into the fitting recess 24, and is flexible and elastic. Similarly, when the ridge forming member C formed of a material rich in properties is provided, excessive deformation of the ridge forming member C can be restricted by the mouth-and-neck portion 12, and as a result, the cap B can be controlled by the internal pressure. When the pressure rises, only the portion of the locking protrusion 14a is elastically deformed appropriately and rises, and after the internal pressure is reduced, it can be quickly lowered to the original state.

  A ventilation recess 15 or 25 for communicating the upper and lower portions of the engagement path between the locking protrusion 14 and the engaging protrusion 22 provided at the position opposite to the protrusion forming member C in the ventilation path p, the mouth neck portion 12 and the cap In the case of being configured with a gap with the peripheral wall 20, the portion where the recess 15 or 25 for ventilation is formed is not elastically deformed, so that the ventilation path p is narrowed in the middle or blocked when it is severe, etc. There is no fear of this, and smooth outside air can be discharged.

It is a half sectional view of a pressure regulation container. Example 1 1 is an explanatory diagram for explaining the operation of the pressure regulating container. Example 1 It is a cross-sectional view which follows the XX line of Fig.2 (a). Example 1 It is a half sectional view of a pressure regulation container. (Example 2) It is explanatory drawing explaining the effect | action of the pressure regulation container of FIG. (Example 2) It is a cross-sectional view which follows the YY line of Fig.5 (a). (Example 2) It is a principal part expanded sectional view of a pressure regulation container. (Example 3) It is a principal part expanded sectional view of a pressure regulation container. Example 4 It is a principal part expanded sectional view of a pressure regulation container. (Example 5) It is a principal part expanded sectional view of a pressure regulation container. (Example 6) It is a principal part expanded sectional view of a pressure regulation container. (Example 7)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show an example of the pressure regulating container 1. The pressure regulating container 1 includes a container body A and a cap B.

  The container body A is formed of a synthetic resin or the like, and is configured such that a mouth-and-neck portion 12 whose outer peripheral surface is reduced in diameter is provided on a cylindrical body portion 10 via an upward stepped portion 11. The inner peripheral upper end of the mouth / neck portion 12 is formed with an annular recess 13 to increase its diameter, and a locking protrusion 14 is provided on the outer periphery of the mouth / neck portion 12 so as to project. A plurality of ventilation recesses 15 forming a ventilation path are formed in the locking protrusion 14 in the circumferential direction.

  The cap B is in the shape of a flat plate with the top wall 21 extending from the upper end edge of the peripheral wall 20, and the upper part of the peripheral wall 20 has a small diameter on the inner peripheral surface, the small diameter portion 20a, and the lower end portion on the inner peripheral surface. Each of the large diameter portions 20b has a large diameter, and an engagement protrusion 22 is provided around the inner surface of the large diameter portion 20b at a predetermined position in the vertical direction.

  In addition, a seal portion s is provided between the top of the mouth / neck portion 12 of the container body A and the lower surface of the cap B to block the inside and outside. The seal portion s in this example includes a first seal portion s1 that closely contacts a seal cylinder 23 that is suspended from the back surface of the cap top wall 21 with the inner surface of the mouth-and-neck portion 12 below the annular recess 13; It is composed of two seal parts, the second seal part s2 that presses the back surface of the cap top wall 21 and the upper surface of the mouth and neck part 12, and the lower end of the seal cylinder 23 constituting the first seal part s1 The seal cylinder 23 is configured to be easily pressed against the inner surface of the mouth neck portion 12 when the cap B is mounted, and when the cap B is raised by the internal pressure, the mouth neck portion 12 is positioned at the position of the annular recess 13. It is configured so that a sufficient gap is provided for ventilation.

  Further, the engaging protrusion 22 is formed of a flexible and elastic material. As the flexible and elastic material, an elastomer such as silicone rubber or a soft synthetic resin can be used. In this example, an annular fitting recess 16 having an inner surface and a lower surface opened from the lower portion of the small-diameter portion 20a to the large-diameter portion 20b in the cap peripheral wall 20 is provided, and the protrusion of the above material is provided in the fitting recess 16. The strip forming member C is fitted. The ridge forming member C includes an annular fitting base 30 that is fitted and fixed in the fitting recess 16 to reproduce the thickness of the cap peripheral wall 20. The fitting base 30 has an annular shape in which a thick portion 30a that reproduces the small-diameter portion 20a of the cap peripheral wall 20 and a thin portion 30b that reproduces the large-diameter portion 20b of the cap peripheral wall 20, and is formed by insert molding, bonding, It is fixed in the fitting recess 16 by appropriate fixing means such as fusion. The engaging ridge 22a formed integrally with the material is provided at a predetermined position on the inner surface of the thin portion 30b.

  Further, the pressure regulating container 1 is provided with a ventilation path p that passes between the mouth neck portion 12 and the cap B from the laying position of the seal portion s and communicates from the lower end of the cap peripheral wall 20 to the outside. In this example, the vent recess 15 is configured to allow communication between the engaging protrusion 14 and the engaging protrusion 22 at the upper and lower portions, and the neck 12 and the cap at the upper and lower portions of the connecting portion. A ventilation path p is formed by providing a gap with the peripheral wall 20.

  The operation when using the pressure regulating container 1 configured in this way will be described. If the internal pressure in the container body A rises in the state of FIG. 2 (a), the cap B is pressed upward by the pressure. . At that time, since the engaging protrusion 22a is formed of a flexible and elastic material, the engaging protrusion 22a is elastically deformed and the cap B is pushed upward as shown in FIG. 2 (b). The lower portion of the seal cylinder 23 is raised to the position of the annular recess 13 to open the first seal portion s1, and the back surface of the cap top wall 21 is released from the pressure contact with the upper surface of the mouth and neck portion 12 and raised to the second seal. The part s2 is opened, and the seal of the seal part s is released. The pressurized gas passes through the opened seal portion s, and is discharged to the outside through the air passage p. When the internal pressure of the container body A becomes a predetermined pressure at which the cap B cannot be pushed up, the cap B returns to the original state by the elastic restoring force and gravity of the engaging protrusion 22 and the seal portion s is sealed again.

  4 to 6 show other examples, in which a fitting recess 24 having an open upper surface and an outer surface is formed on the outer periphery of the container body neck portion 12, and a ridge forming member C is fitted and fixed to the fitting recess 24. is doing. The ridge forming member C of this example has a fitting base 30 for reproducing the thickness of the mouth-and-neck portion 12 from the upper end to the lower end of the fitting recess 24, and the outer peripheral vertical predetermined position of the fitting base 30 The locking ridge 14a is integrally formed with each other. Further, the cap peripheral wall 20 is formed by forming an inner peripheral lower portion in the large diameter portion 20b and integrally engaging protrusions 22 at predetermined positions in the vertical direction of the large diameter portion 20b. Furthermore, a plurality of circumferential recesses 25 are provided in the circumferential direction from the lower end to the upper end of the inner surface of the large diameter portion 20b, and the engagement protrusions 14 and the engagement protrusions 22 are engaged by the ventilation recesses 25. The upper and lower portions of the communication portion are configured to communicate with each other, and a gap is provided between the mouth neck portion 12 and the peripheral wall 20 at the upper and lower portions of the communication portion to form the air passage p. The other configuration is the same as that of the example of FIG. 1, and its operation is substantially the same as that of FIG. 2 as shown in FIG.

  FIG. 7 shows still another example, and in the example of FIG. 1, an example is shown in which the ridge forming member C is provided with a ventilation recess 25a constituting the ventilation path p. In this example, the locking protrusion 14 is integrally provided on the outer periphery of the mouth-and-neck portion 12, and a plurality of circumferential directions extend from the upper surface of the protrusion-forming member C to the inner surface of the large-diameter portion 20b. A ventilation recess 25a is provided. The other configuration is the same as that of the example of FIG. 1 and the operation thereof is substantially the same, so that the description thereof is omitted.

  FIG. 8 shows still another example, and in the example of FIG. 2, an example in which the recess 15a for ventilation constituting the ventilation path p is provided in the protrusion forming member C is shown. In this example, a plurality of ventilation recesses 15a in the circumferential direction are provided from the lower surface to the side surface of the locking protrusion 14a of the protrusion forming member C. The cap B has an upper portion of the peripheral wall 20 formed at the large diameter portion 20b and a lower end portion formed at the small diameter portion 20a, and an engaging protrusion 22 is integrally provided on the inner surface of the small diameter portion 20a. The other configuration is the same as that of the example of FIG. 2 and the operation thereof is substantially the same, so the description thereof is omitted.

  FIG. 9 shows still another example and shows an example in which the form of the seal portion s is different. In this example, the seal protrusion 26 is integrally projected from the back surface of the top wall 21 of the cap B, and the seal protrusion 26 is pressed against the top surface of the mouth-neck portion 12 to form the seal portion s. In addition to this example and the example shown in FIG. 1, the seal part s has a configuration in which the upper end of the inner periphery of the mouth / neck part 12 is suspended from the rear peripheral edge of the cap top wall 21 as shown in FIG. 10. A first seal portion s1 composed of a seal cylinder 23 fitted in an airtight and liquid tight manner, and a seal protrusion 26 suspended from the rear peripheral edge portion of the cap top wall 21 and pressed against the upper surface of the mouth neck portion 12 The seal portion s2 may be configured, or, as shown in FIG. 11, the seal portion s is configured by fitting the back surface of the cap top wall 21 and providing a packing 28 with the lower surface pressed against the top surface of the mouth neck portion 12 You may do it. These seal portions s can naturally be applied to other examples, and the seal portion s can be hermetically and liquid-tightly sealed between the top of the mouth-and-neck portion 12 and the top wall 21 of the cap. In addition, various configurations can be adopted as long as the cap B is slightly raised so that the seal is released.

1 ... Pressure adjustment container A ... Container body
10 ... trunk, 11 ... upward step, 12 ... neck and neck, 13 ... annular recess, 14 ... locking ridge,
14a: protrusion for locking, 15: recess for ventilation, 15a: recess for ventilation, 16 ... fitting recess B: cap
20 ... peripheral wall, 20a ... small diameter part, 20b ... large diameter part, 21 ... top wall, 22 ... engaging ridge,
22a ... engaging protrusion, 23 ... seal cylinder, 24 ... fitting recess, 25 ... ventilation recess,
25a: Recess for ventilation, 26 ... Sealing ridge, 28 ... Packing C ... Projection forming member
30 ... Fitting base, 30a ... Thick part, 30b ... Thin part s ... Seal part
s1 ... first seal part, s2 ... second seal part p ... ventilation passage

Claims (5)

  From the upper end edge of the peripheral wall 20 fitted to the outer periphery of the mouth-and-neck portion 12 and the container body A in which the protruding neck 14 for locking is provided on the outer periphery of the mouth-and-neck portion 12 And a cap B in which an engaging ridge 22 protruding from the inner periphery of the peripheral wall 20 is engaged with the engaging ridge 14 and engaged with the cap B. Between the top of the cap and the lower surface of the cap B, the inside and outside of the mouth and neck portion 12 is shut off, and a seal portion s that is opened when the cap B is raised with respect to the container body A is provided. An air passage p passing between the peripheral wall 20 and communicating from the lower end of the cap peripheral wall 20 to the outside is formed, and at least one of the locking protrusion 14 and the engaging protrusion 22 is formed of a flexible and elastic material. A pressure regulating container characterized by that.   The first seal part s1 in which the seal cylinder 23, in which the seal part s is suspended from the peripheral part of the back surface of the cap top wall 21 is closely fitted to the upper end of the inner periphery of the mouth neck part 12, and the peripheral part of the back surface of the cap top wall 21 The pressure regulating container according to claim 1, comprising a second seal portion s2 in close contact with the upper surface of the portion 12.   An annular fitting recess 16 is formed on the inner periphery of the cap peripheral wall 20, and an engaging protrusion 22a is integrally provided on the inner surface of the annular fitting base 30 fitted into the fitting recess 16, and is flexible. The pressure regulating container according to any one of claims 1 and 2, wherein a protrusion forming member C formed of a material having high elasticity is provided.   An annular fitting recess 24 is formed on the outer periphery of the mouth-and-neck portion 12, and a locking protrusion 14a is integrally provided on the outer surface of the fitting base 30 fitted into the fitting recess 24, and is flexible and elastic. The pressure regulating container according to any one of claims 1 and 2, wherein a ridge forming member C formed of a material rich in properties is provided.   A ventilation recess 15 or 25 for communicating the upper and lower portions of the engagement path between the locking protrusion 14 and the engaging protrusion 22 provided at the position opposite to the protrusion forming member C in the ventilation path p, the mouth neck portion 12 and the cap The pressure regulating container according to claim 3, wherein the pressure regulating container is configured by a gap with the peripheral wall 20.

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