JP4195234B2 - Airtight container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention can be integrally formed with a synthetic resin container body or lid, is inexpensive and has good productivity, and can exhibit high hermetic sealing performance while ensuring smooth opening and closing operability of the lid. The present invention relates to an airtight container having a sealing mechanism.
[0002]
[Prior art]
Usually, among various containers such as a cosmetic container molded from a synthetic resin material, a remarkably airtight performance may be required because the stored items are volatile. As a structure for ensuring airtightness in this type of container, for example, an annular groove is integrally formed in one of the container main body and the lid, and an annular protrusion that fits into the annular groove is integrally formed on the other. Further, it is known that a sealing function is exerted between the container main body and the lid body by keeping the inner surface of the groove and the surface of the protrusion in close contact (Japanese Utility Model Laid-Open No. 61-64813, (See Sho 63-15912, Kohei 4-33059).
[0003]
[Problems to be solved by the invention]
By the way, in the above prior arts, the groove inner surface and the projection surface which are integrally formed with the container main body and the lid body molded with a synthetic resin material and are brought into close contact with each other to form an airtight seal are molded with the synthetic resin material. Therefore, in combination with the rigidity of the synthetic resin material itself, it is difficult to bring the groove inner surface and the protrusion surface into close contact with each other without a gap, and a high airtightness is required, even if a great degree of airtightness is not required. It was unsatisfactory when performance was required.
[0004]
In order to improve the hermetic sealing performance, it is only necessary to adjust the dimension between the groove inner surface and the protrusion surface to tighten the tightness. However, this will prevent the lid from closing or obstructing the opening and closing. On the other hand, if the closeness is set loosely in order to facilitate the operation of the lid, there is a problem that sufficient sealing performance cannot be ensured.
[0005]
For such a problem, it is conceivable to incorporate a sealing material such as rubber, which is well known as a sealing part, as a separate part, and in this way, the operability of the lid is not impaired. High airtightness can be ensured. However, in this case, it is necessary to prepare a sealing material of a different material separately from the container main body and the lid body formed of the synthetic resin material, and perform the assembling work, which increases the cost and decreases the productivity. Another problem arises.
[0006]
The present invention was devised in view of the above-described conventional problems, and can be integrally formed on a synthetic resin container body or lid, is inexpensive and has good productivity, and smoothly opens and closes the lid. It aims at providing the airtight container provided with the sealing mechanism which can exhibit high airtight sealing performance, ensuring operability.
[0007]
[Means for Solving the Problems]
The hermetic container according to the present invention is formed integrally in the annular seal groove formed integrally with either the synthetic resin container main body or the synthetic resin lid body that opens and closes the container main body. In the airtight container in which the inside of the container body is hermetically sealed by inserting the annular seal protrusion , the container body is closed with the lid body by the upper end surface of the container body and the back surface of the lid body. A contact / separation surface that is in contact with each other is sometimes formed, and the container main body and the lid body are formed on one of an inward peripheral wall surface and an outward peripheral wall surface of the annular seal groove facing each other with a space therebetween. from SeHHanaremen, along the height direction of the container body to form a first sealing surface in close proximity, along the height direction of the container body from the contact and separation surface than the first sealing surface on the other Forming a second sealing surface at a distance; A first seal portion and a second seal portion are formed on the annular seal protrusion facing the inward peripheral wall surface and the outward peripheral wall surface so as to correspond to the first seal surface and the second seal surface, respectively. In order to slidably contact the seal surface with the second seal portion, the second seal portion is formed with high rigidity, and the first seal surface is elastically pressed against the first seal portion. Rutotomoni with a seal portion sealing mechanism formed on the elastic deformable low rigidity, between the container body and the lid is provided with a hinge that pivotally connected to the lid member relative to said container body In addition, the hinge includes an allowance portion that allows relative movement of the container body and the lid along the contact / separation surface .
[0009]
Furthermore, it is provided with a restraining means that is formed on one of the container body and the lid and elastically contacts the other to restrain the pivoting movement of the lid relative to the container body by the hinge. And
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of an airtight container according to the present invention will be described in detail with reference to the accompanying drawings. 1 to 6 show a portable cosmetic container 1 containing a volatile cosmetic C as an example of an airtight container. As shown in the figure, this cosmetic container 1 is composed of a soft synthetic resin container main body 3 in which a storage portion 2 for storing volatile cosmetic C is formed, and one end of the container main body 3 via a hinge 4. The container main body 3 is brought into contact with and separated from the container body 3 to be opened and closed, and the other end of the container main body 3 is detachably engaged with the hook means 5 so that the container main body 3 is closed. And a lid 6 made of a transparent and hard synthetic resin to be maintained.
[0011]
A hinge block 8 suspended from a lid body 6 is sandwiched between a pair of hinge pieces 7 projecting from the container body 3, and the hinges 4 are respectively formed on the hinge block 8 and the hinge piece 7 and are connected in series. The hinge pin 11 is configured to pass through the hole 9 and the pin insertion hole 10.
[0012]
The cosmetic container 1 according to the present embodiment basically includes an annular seal groove 12 integrally formed on either the container body 3 and the lid body 6 that contacts and separates from the container body 3 and opens and closes the container body 3. An annular seal protrusion 13 is integrally formed on the other of the main body 3 and the lid body 6, and the storage portion 2 is hermetically sealed by inserting the annular seal protrusion 13 into the annular seal groove 12. In particular, the first seal surface 15 of the annular seal groove 12 is adjacent to the contact / separation surface 16 between the container body 3 and the lid body 6 on one of the inward circumferential wall surface and the outward circumferential wall surface facing each other with a space therebetween. The second seal surface 14 is formed on the other side and separated from the contact / separation surface 16 rather than the first seal surface 15, and the first seal surface is formed on the annular seal protrusion 13 facing the inward peripheral wall surface and the outward peripheral wall surface. 15th and 1st A first seal portion 13a and a second seal portion 13b are formed corresponding to the seal surface 14, respectively, and the second seal portion 13b is slidably brought into sliding contact with the second seal portion 13b. In order to elastically press the first seal surface 15 against the first seal portion 13a, the first seal portion 13a is provided with a seal mechanism 17 formed with low rigidity so as to be elastically deformable. .
[0013]
If it demonstrates according to illustration, while the container main body 3 is provided with the annular surrounding side wall 18 surrounding the accommodating part 2, the back surface of the cover body 6 encloses the circular recessed part 19 substantially corresponding to the accommodating part 2. An annular bank portion 20 is provided. Then, the lid 6 and the container body 3 are in contact with each other when the container body 3 is closed with the lid body 6 by the bank portion 20 of the lid body 6 and the upper end surface of the peripheral side wall 18 of the container body 3. A contact surface 16 is formed. A first annular protrusion 21 having a large diameter and a second annular protrusion 22 having a small diameter are concentrically formed along the circumferential direction of the bank portion 20 so as to hang down toward the peripheral side wall 18. Thus, an annular seal groove 12 is formed integrally with the lid 6 between them. The annular seal groove 12 has two peripheral wall surfaces formed by a pair of annular protrusions 21 and 22, and these two peripheral wall surfaces are arranged to face each other with a gap therebetween in the radial direction of the lid body 6. Of these peripheral wall surfaces, the peripheral wall surface located on the radially outer side of the lid body 6 becomes the inward circumferential wall surface facing the recess 19 side, and consequently the storage portion 2 side of the container body 3, and conversely the radially inner side of the lid body 6 The peripheral wall surface located on the outside is the outward peripheral wall surface facing the outside of the lid body 6, and consequently the container body 3.
[0014]
On the other hand, a first annular groove into which the first annular protrusion 21 and the second annular protrusion 22 are inserted in the peripheral side wall 18 of the container body 3 along the circumferential direction when the container body 3 is closed by the lid body 6. 23 and the second annular groove 24 are formed so as to surround the storage portion 2, and the annular seal protrusion 13 is formed integrally with the container body 3 between these annular grooves 23, 24. The annular seal protrusion 13 also has two peripheral surfaces formed by the pair of annular grooves 23, 24, and when entering the annular seal groove 12, of these two peripheral surfaces, faces the outside of the container body 3. The outer peripheral surface faces the inward peripheral wall surface of the annular seal groove 12, and the inner peripheral surface facing the storage part 2 side faces the outward peripheral wall surface.
[0015]
As shown in FIGS. 3 and 4, when the annular seal protrusion 13 enters the annular seal groove 12, the portion close to the contact / separation surface 16 between the container main body 3 and the lid body 6, and this contact / separation A portion separated from the surface 16, in the illustrated example, an upper portion and a lower portion along the height direction of the container body 3 are separately brought into contact with the inward peripheral wall surface and the outward peripheral wall surface of the annular seal groove 12, respectively. A mechanism 17 is configured.
[0016]
Specifically, the second annular protrusion 22 that forms the outward circumferential wall surface of the annular seal groove 12 is set to have a shorter hanging length than the first annular protrusion 21, and the upper portion of the annular seal protrusion 13 is connected to the contact / separation surface 16. While becoming the 1st seal part 13a contacted to the outward surrounding wall surface near, the said outward surrounding wall surface corresponding to the 1st seal part 13a becomes the 1st seal surface 15. Further, the first annular protrusion 21 forming the inward peripheral wall surface of the annular seal groove 12 is set to have a long hanging length, and the lower part of the annular seal protrusion 13 is inwardly facing the inward peripheral wall surface at a position far from the contact / separation surface 16. The second seal portion 13b in contact with the second seal portion 13b and the lower portion of the outer circumferential wall surface corresponding to the second seal portion 13b become the second seal surface 14. The contact areas where the seal portions 13a and 13b and the seal surfaces 14 and 15 come in contact may partially overlap, but are set to be shifted at least in the height direction of the container body 3.
[0017]
In particular, the first seal portion 13 a on the upper portion of the annular seal projection 13 adjacent to the contact / separation surface 16 is formed with low rigidity so as to be flexibly deformable so as to be elastically pressed against the first seal surface 15. In the illustrated example, the thickness of the first seal portion 13a of the annular seal protrusion 13 is softened by setting it thin, whereby the first seal portion 13a is familiar to the first seal surface 15 and has an appropriate elasticity. It comes into contact with force and is sealed airtight. In addition, the second seal portion 13 b below the annular seal protrusion 13 remote from the contact / separation surface 16 is formed with higher rigidity than the first seal portion 13 a in order to make sliding contact with the second seal surface 14. In the illustrated example, the thickness of the second seal portion 13b of the annular seal protrusion 13 is set to be thick, so that when the annular seal protrusion 13 is inserted into and extracted from the annular seal groove 12, the second seal surface is provided. 14, the second seal portion 13b moves while sliding, and after the insertion is completed, the second seal portion 13b is brought into contact with a considerably strong pressing force to be hermetically sealed.
[0018]
Further, the first seal portion 13a of the annular seal protrusion 13 is provided between the upper portion of the inward peripheral wall surface and the upper portion of the annular seal projection 13 on the side opposite to the side where the first seal portion 13a and the first seal surface 15 contact. A gap 25 is formed to allow the deformation. In the illustrated example, the gap 25 is formed by retreating the annular seal protrusion 13 inward in the radial direction of the container body 3 above the second seal portion 13b, and the first seal portion 13a becomes the first seal portion by the gap 25. Even if the annular seal protrusion 13 is deformed so as to swell strongly against the one seal surface 15, the deformation is absorbed without hindering the deformation. Further, a tapered surface 26 that guides the insertion / extraction operation of the annular seal protrusion 13 into the annular seal groove 12 is provided at the lower opening edge of the annular seal groove 12 and the lower edge portion of the gap 25 and the upper edge of the annular seal protrusion 13. Is formed.
[0019]
The hook means 5 protrudes outward from the first annular protrusion 21 toward the container body 3 and protrudes from the first annular groove 23 toward the storage portion 2 so as to be freely engaged with and disengaged from the engagement protrusion 27. The engagement convex portion 28 is engaged, and the closed state of the lid body 6 can be maintained or released by using the insertion / extraction operation of the annular seal protrusion 13 to / from the annular seal groove 12. Yes.
[0020]
Further, as shown in FIG. 4, the hinge 4 that connects the container body 3 and the lid body 6 is soft when the lid body 6 closes the container body 3, following the hard synthetic resin lid body 6. A permissible portion for allowing the container body 3 made of a synthetic resin to move relatively slightly along the contact / separation surface 16 is provided. In this embodiment, the permissible portion is formed so that the hinge pin insertion hole 10 of the hinge piece 7 is tightly formed with respect to the hinge pin 11, while the pin hole 9 of the hinge block 8 creates a gap S therebetween. The gap S allows the hinge block 8 to move relative to the hinge piece 7, that is, the lid 6 to move relative to the container body 3. As an allowance part, the diameter of the pin hole 9 and the hinge insertion hole 10 may be changed, and a clearance gap may be produced between the hinge insertion hole 10 and the hinge pin 11. In addition, a flexible portion that can be elastically deformed is formed on the hinge piece 7 or the hinge block 8 and used as an allowable portion, and relative movement between the lid body 6 and the container body 3 is allowed by the flexible deformation of the flexible portion. You may do it.
[0021]
Furthermore, in the cosmetic container 1 according to the present embodiment, as shown in FIGS. 5 and 6, the cosmetic container 1 is formed on one of the container body 3 and the lid body 6, and elastically contacts the other and is hinged by the hinge 4. A restraining means for restraining the rotational movement of the lid body 6 with respect to the container body 3 is provided. In the illustrated example, the restraining means includes an elastically deformable elastic plate portion 30 surrounded by a U-shaped slit 29 formed in the peripheral side wall 18 portion of the container body 3 sandwiched between the pair of hinge pieces 7. In order to come into contact with the hinge block 8, it is composed of a restraining projection 31 formed so as to protrude from the elastic plate portion 30 to the hinge block 8 side.
[0022]
The restraining projection 31 is brought into contact with the hinge block 8 approaching the elastic plate portion 30 in the process of opening and closing the lid body 6 and is pushed into the storage portion 2 side. The container body 3 is pushed out. As a result, the inner peripheral surface of the pin hole 9 is pressed against the hinge pin 11, and the relative rotation of the hinge block 8 with respect to the hinge pin 11 is stopped by the frictional contact, that is, the rotation of the lid 6 is stopped. Thus, a so-called free stop function for stopping the lid 6 at an arbitrary position is exhibited. In the present embodiment, the container body 3 is provided with the elastic plate portion 30, but instead of this, the same elastic plate portion is provided in the hinge block 8 of the lid 6, and this is attached to the container body 3. Of course, it may be made to contact elastically.
[0023]
The operation of the cosmetic container 1 according to the present embodiment described above will be described. When the container body 3 is closed with the lid 6, first, the lower portion of the first annular protrusion 21 smoothly enters the first annular groove 23. In particular, the second annular protrusion 22 is inserted into the second annular groove 24 without any resistance. In the process in which the annular seal protrusion 13 enters the annular seal groove 12 in this way, the second seal surface 14 and the second seal portion 13b are slidably slidably contacted with each other at the lower portion of the annular seal protrusion 13. At the same time, the first seal surface 15 and the first seal portion 13a come into contact with each other at the upper part of the annular seal protrusion 13.
[0024]
Thereafter, when the lid body 6 is strongly closed, the annular seal protrusion 13 is inserted into the annular seal groove 12 further deeply while the first seal portion 13a is flexibly deformed while conforming to the first seal surface 15. The seal portion 13b fits deeper while being slid strongly against the second seal surface. When the lid 6 is completely closed and the container body 3 is closed by the hook means 5, the second seal portion 13b is in a state of being in strong sliding contact with the second seal surface 14 with its high rigidity. The seal portion 13a is elastically pressed against the first seal surface 15, and high airtight performance can be ensured by these two upper and lower seal portions.
[0025]
In particular, the upper portion of the annular seal protrusion 13 is bulged and deformed by the strong pressure contact between the first seal portion 13 a and the first seal surface 15, and the bulging deformation is allowed by the gap 25, thereby lowering the lower portion of the annular seal protrusion 13. In this case, the second seal portion 13b is pressed more strongly toward the second seal surface 14, thereby strengthening the pressure contact between the second seal portion 13b and the second seal surface 14, and the upper portions of these annular seal protrusions 13 are pressed. Very high hermetic sealing performance can be achieved at both the bottom and bottom.
[0026]
Further, the relative movement between the container body 3 and the lid body 6 along the contact / separation surface 16 that may occur when the container body 3 is closed by the lid body 6 is a gap between the hinge pin 11 and the pin hole 9 that are an allowable portion. Since S is allowed by S, the container body 3 can be securely attached to the lid body 6 without hindering the sealing action of the sealing mechanism 17 that ensures high airtight performance by strong sliding contact and elastic pressure contact. Can be closed.
[0027]
On the other hand, when the container body 3 is opened, if the hook means 5 is removed, the second seal part 13b and the second seal surface 14 in a strong sliding contact state, and the first seal part 13a in an elastic pressure contact state and In any of the first seal surfaces 15, the contact state between the two is loosened, and the annular seal protrusion 13 can be smoothly extracted from the annular seal groove 12 by subsequently rotating the lid body 6. The lid 6 can be opened with light operability. And since it has the restraining means which consists of the elastic board part 30 and the restraining protrusion 31 with respect to the opening / closing operation | movement of this cover body 6, even if the clearance gap S was set between the hinge pin 11 and the pin hole 9 as an allowance part Regardless, the lid 6 can be stopped at an arbitrary position, and good operability can be ensured. In addition, since the lid 6 is formed transparent, the color of the cosmetic C can be confirmed with the lid 6 closed.
[0028]
As described above, the sealing mechanism 17 of the cosmetic container 1 according to the present embodiment can be integrally formed with the synthetic resin container body 3 and the lid body 6 and is inexpensive and has good productivity. High airtight sealing performance can be exhibited while ensuring smooth opening and closing operability.
[0029]
In the above embodiment, when setting the rigidity required for the first seal portion 13a and the second seal portion 13b of the annular seal protrusion 13, the thickness and the side sectional area thereof are changed. However, in addition to these, the seal portions 13a and 13b may be formed of synthetic resin materials having different rigidity, or the first seal portion 13a may be formed with fine grooves that give considerable flexibility. Of course, the rigidity of these seal portions 13a and 13b can be set by various known methods. In the illustrated example, the case where the first seal surface 15 and the second seal surface 14 are formed substantially vertically along the height direction of the container body 3 has been shown. 12 may be narrowed in the depth direction, and the seal surfaces 14 and 15 may be formed so as to be inclined to some extent so that the distance between them is closer than the contact / separation surface 16.
[0030]
Furthermore, in the above embodiment, the case where the annular seal protrusion 13 is integrally formed on the container body 3 and the annular seal groove 12 is integrally formed on the lid 6 has been described as an example. The protrusions may be integrally formed, and an annular seal groove may be formed in the container body 3. Furthermore, in the said embodiment, although the cover body 6 attached to the container main body 3 via the hinge 4 was illustrated and demonstrated, the cover body 6 isolate | separated completely from the container main body 3 may be sufficient. Of course.
[0031]
【The invention's effect】
As described above, the hermetic container according to the present invention can be integrally formed with a synthetic resin container main body and lid, is inexpensive and has good productivity, and is connected to the container main body and the lid. The second seal portion remote from the separation surface along the height direction of the container body is in a state of being slidably contacted with the second seal surface with its high rigidity, and also from the contact and separation surface along the height direction of the container body. The first seal portion that is close to each other is elastically pressed against the first seal surface, and the two seal portions formed by the annular seal protrusion and the annular seal groove enable smooth opening / closing operability of the lid. It is possible to ensure high hermetic sealing performance while ensuring the above.
[0032]
In addition, in the structure in which the container main body and the lid are connected by a hinge, positional deviation between the container main body and the lid can be absorbed by the permissible portion provided on the hinge, and the closure of the container main body by the lid is ensured. can do.
[0033]
Furthermore, despite the fact that the hinge is provided with a permissible portion that allows relative movement between the lid body and the container body, the lid body can be stopped at an arbitrary rotational position by the restraining means. Can be secured.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a cosmetic container showing an embodiment of an airtight container according to the present invention.
FIG. 2 is a plan view of the cosmetic container of FIG.
3 is an enlarged cross-sectional view of a main part around a hook means in the cosmetic container of FIG. 1. FIG.
4 is an enlarged cross-sectional view of a main part around a hinge in the cosmetic container of FIG. 1. FIG.
FIG. 5 is an enlarged perspective view of a main part around a hinge piece in the cosmetic container of FIG. 1;
6 is an enlarged cross-sectional view of a main part of the cosmetic container of FIG. 1 in a state where a lid around the hinge is opened.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cosmetic container 3 Container body 4 Hinge 6 Lid 9 Pin hole 11 Hinge pin 12 Annular seal groove 13 Annular seal protrusion 13a First seal part 13b Second seal part 14 Second seal surface 15 First seal surface 16 Contacting / separating surface 17 Seal mechanism 30 Elastic plate portion 31 Stop projection S S Gap

Claims (2)

An annular seal protrusion integrally formed on the other is inserted into an annular seal groove integrally formed on either the synthetic resin container main body or the synthetic resin lid body that opens and closes the container main body. , In an airtight container that hermetically seals the inside of the container body,
The upper end surface of the container body and the back surface of the lid body constitute a contact / separation surface that comes into contact with and separate from each other when the container body is closed by the lid body, and the annular seal grooves are spaced apart from each other. A first seal surface is formed on either one of the inward peripheral wall surface and the outward peripheral wall surface facing each other from the contact / separation surface of the container body and the lid body along the height direction of the container body , On the other hand, the annular seal facing the inward peripheral wall surface and the outward peripheral wall surface is formed by forming a second seal surface that is separated from the contact / separation surface along the height direction of the container body rather than the first seal surface. In order to form a first seal portion and a second seal portion on the protrusion so as to correspond to the first seal surface and the second seal surface, respectively, and to slidably contact the second seal surface with the second seal portion, The second seal is formed with high rigidity , The first sealing surface in order to elastically pressed against the first sealing portion above Rutotomoni with a seal mechanism the first seal portion is formed in the elastically deformable low rigidity,
Provided between the container body and the lid body is a hinge for rotatably connecting the lid body to the container body, and the container body and the lid along the contact / separation surface are provided on the hinge. An airtight container comprising an allowance portion that allows relative movement of a body . A restraining means formed on one of the container main body and the lid and elastically contacting the other to restrain the rotation of the lid relative to the container main body by the hinge is provided. The airtight container according to claim 1 .

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