CN102190117A

CN102190117A - Cover of airtight storage container

Info

Publication number: CN102190117A
Application number: CN2011100454674A
Authority: CN
Inventors: 藤井英司
Original assignee: MARUJI FUJII KK
Current assignee: MARUJI FUJII KK
Priority date: 2010-03-10
Filing date: 2011-02-22
Publication date: 2011-09-21
Anticipated expiration: 2031-02-22
Also published as: CN102190117B; JP2011184081A; TW201130716A; TWI403436B; KR101251325B1; KR20110102133A; JP5624341B2

Abstract

The invention relates to a cover of an airtight storage container which causes the operation of opening the cover to be easy and may cause the container to be reused and which is capable of maintaining tightness. A middle plug (3) is arranged in a cover body (2) which is mountable into the opening portion (5a) of the airtight storage container (5); a retaining portion (2c) projecting toward an open portion (2b) is arranged on the cover body (2); the middle plug (3) is formed with a receiving space (3c) so that the retaining portion (2c) can enter the interior from the open portion; and the middle plug (3) is embedded into the retaining portion (2c) in such a manner of being movable up and down with the retaining portion without transferring the rotation force of the retaining portion to the middle plug.

Description

The lid of airtight preservation container

Technical field

The present invention relates to a kind of lid that is used to make the airtight preservation container that the constant quality of content preserves.

Background technology

(explanation of conventional example)

The airtight preservation container of tegmentum leak free is opened at first and need be sealed fully until the arrival person of needs or by the needs person.As the lid of the airtight preservation container that is used for short-term or long preservation content, propose to have combination cover main body and middle plug lid (Japanese kokai publication hei 8-48350 communique etc.), make and cover main body and the integrally formed lid (Japan's reality is opened clear 60-123360 communique etc.) of middle plug.

In the lid (hereinafter referred to as " conventional example 1 ") of Japanese kokai publication hei 8-48350 communique record, communique is shown in Figure 1 as described, with the cooresponding lid main body of lid main body in dispose as in the sealing of plug with weighting material (packing).Described lid main body is made of lid top panel and the perisporium of being located at the lid top panel periphery.On this perisporium, be formed with the lid threaded portion of the container threads portion that is screwed into container finish.In addition, described sealing is used for closing airtight container oral area when covering with weighting material, and it has the limb plate (Japanese is " mesopodium ") of the ring-type in the opening that sealably embeds this container finish.

Japan opens in the container cover (hereinafter referred to as " conventional example 2 ") of clear 60-123360 communique record in fact, and communique is shown in Figure 2 as described, and this container cover is by constituting with lid main body cooresponding barrel portion with the cooresponding spigot of middle plug.Described barrel portion is screwed into the threaded portion of the bolt oral area of container.In addition, described spigot is an internal entity structure and integrally formed with described barrel portion, and embeds bolt mouth peristome with compact state.

(problem of conventional example)

For making up, though obtain by middle plug to have following problem under the situation of high leakproofness as the lid main body of conventional example 1 and the Gai Eryan of middle plug.

That is, in conventional example 1, when uncapping, when the user fills in from the oral area of container is pulled down, have the content that is saved to be attached to the possibility of finger, particularly, when content was liquid, its possibility was big.Troublesome poeration when therefore, uncapping to lid.

As conventional example 2, in the integrally formed lid of lid main body and middle plug, because when uncapping, middle plug is pulled down with covering main body, therefore, can solve above-mentioned problem, but have new problem as described below.

That is, in conventional example 2, for container cover being screwed into the bolt oral area, need rotating barrel portion when uncapping, spigot is followed the rotation of this barrel portion and is rotated.Because this spigot is with the bolt mouth peristome of tightlock status embedding bolt oral area, therefore the rotation of described spigot can scratch the inner peripheral surface of the described bolt mouth peristome that outer peripheral face connected airtight of spigot.Consequently, produce minim gap between described outer peripheral face and described inner peripheral surface, this gap becomes the reason that causes leakproofness to reduce.

In research institute etc., according to situations such as budgets, existence will pack into the container repeated washing of content (for example reagent, organic nutrient solution, the sample water that extracts from sea, lakes and marhshes etc. etc.) and the actual conditions utilized again.From the viewpoint of repeated usage container, in described conventional example 2, because the inner peripheral surface of the bolt mouth peristome of nonrecoverable container is scratched, the therefore unfavorable condition that exists container to utilize again.

Summary of the invention

The objective of the invention is to, make the processing ease when uncapping, can the repeated usage container and can keep leakproofness.

The lid of airtight preservation container of the present invention possesses: the lid main body that can be installed on the oral area of airtight preservation container; Be disposed at the middle plug in this lid main body.

In described lid main body, be provided with from its inner bottom part to the outstanding maintaining part of peristome.The portion within it of filling in described is formed with the accommodation space that described maintaining part can enter from peristome, and is provided with the flange part that stretches out laterally and can connect airtight with the edge portion of described oral area at its peripheral part.About the marriage relation of described maintaining part and described middle plug, described middle plug can move up and down with described maintaining part, but does not rotate linkedly with the rotation of maintaining part.In other words, described maintaining part embeds described middle plug not fill in the mode that applies its rotational force in described.Separate opposed with gap between the inner peripheral surface of the described inner bottom part side of the outer peripheral face of the flange part of described maintaining part and described lid main body.

As described maintaining part and described in the example of marriage relation of plug, the maintaining part of a side becomes the undercut portions that is made of to open direction bevelled dip plane gradually towards the peristome of lid main body the outer peripheral face of maintaining part.In addition, the middle plug of opposite side becomes the undercut portions that the inner peripheral surface by the peristome of the accommodation space of middle plug constitutes along described outer peripheral face bevelled dip plane.The inner peripheral surface of the outer peripheral face of described maintaining part and described middle plug keeps opposed with gap each other.

As another example of described marriage relation, the described maintaining part of a side becomes the peristome side that is formed with the lid main body that keeps space and this maintenance space in inside and becomes peristome, and, in the engaging edge portion that is provided with in interior week of this peristome.In addition, the middle plug of opposite side is provided with the maintenance protuberance of giving prominence to and be formed with at peripheral part engaging recessed part from the bottom of its accommodation space towards peristome.The maintenance protuberance of plug is accommodated in the described maintenance space by the peristome of described maintaining part in described.The described engaging edge portion of described maintaining part with described in the empty standard width of a room in an old-style house of the engaging recessed part unoccupied place of plug engage, and remain in described maintenance protuberance.

As being used for the identification indication mechanism that the user discerns content, under can not using and be difficult for implementing under the painted situation in the airtight preservation container back that is shaped to the situation of the painted material of airtight preservation container, the demonstration body of the accommodation space deploy content thing of plug in described is having an X-rayed described demonstration body from the lid external side of main body.

(invention effect)

According to the present invention, because plug during the maintaining part of lid main body embeds, therefore, installation of covering easily and releasing thereof, in addition, described in plug can with respect to described maintaining part move up and down with this maintaining part and not with the rotation interlock of described maintaining part, therefore, closing when covering, can not rotate even fill in the rotation of described maintaining part yet, thus the oral area that can prevent airtight preservation container because of in fill in and be scratched, consequently, can the airtight preservation container of repeated usage, can keep leakproofness, in addition, even also can keep leakproofness owing to airtight preservation container in keeping or handling process slips, therefore, can not cause content leaks because of slipping.

Description of drawings

Fig. 1 is partly cut-away's front view of running condition of the lid of expression airtight preservation container of the present invention.

Fig. 2 is the II-II line cutaway view of Fig. 1.

Fig. 3 is the birds-eye view of the lid of expression airtight preservation container of the present invention.

Fig. 4 is the amplification profile along the IV-IV line of Fig. 3.

Fig. 5 is partly cut-away's front view of state that the lid of airtight preservation container of the present invention has been decomposed in expression.

Fig. 6 is the VI-VI line cutaway view along Fig. 5.

Fig. 7 is the birds-eye view of the middle plug of presentation graphs 5.

Fig. 8 is the upward view of the demonstration body of presentation graphs 5.

Fig. 9 is partly cut-away's front view of other embodiments of the lid of expression airtight preservation container of the present invention.

Figure 10 is the cutaway view along the X-X line of Fig. 9.

Figure 11 is partly cut-away's front view of state of the lid of the expression airtight preservation container that decomposed Fig. 9.

Figure 12 is the birds-eye view of plug of the lid of the expression airtight preservation container that is used for Fig. 9.

Figure 13 is partly cut-away's front view of another embodiment of the lid of expression airtight preservation container of the present invention.

Figure 14 is the birds-eye view of plug of the lid of the expression airtight preservation container that is used for Figure 13.

(nomenclature)

1,11,21 lids

2,12,22 lid main bodys

The peristome of 2b, 12b, 22b lid main body

2c, 12c, 22c maintaining part

2d, 12d keep the space

2d1,12d1 peristome

2e, 12e outer peripheral face

3, plug in 13,23

The flange part of filling among 3a, 13a, the 23a

3a1,13a1,23a1 seal groove

The peristome of filling among 3b, 13b, the 23b

3c, 13c, 23c accommodation space

3d, 13d inner peripheral surface

4, the demonstration body of 14 contents

5 airtight preservation containers

The oral area of the airtight preservation container of 5a

6,16,26 gaps

7,17,27 gaps

12g engaging edge portion

13g keeps protuberance

The 13h engaging recessed part

18 gaps

The 22h card ends flange part

The 22i engagement groove

α, β angle

The specific embodiment

(first embodiment)

The lid of airtight preservation container of the present invention is described with reference to Fig. 1～Fig. 8.

Fig. 1, Fig. 2 and lid 1 shown in Figure 5 possess main body covered 2, are disposed at the interior middle plug 3 of this lid main body and the demonstration body 4 of content.

Lid 1 is made of plastic components, is installed on the oral area 5a of plastic airtight preservation container 5 and airtight this oral area.

In Fig. 1～Fig. 6, be formed with the internal thread part 2a of the external thread part 5b that is used to be screwed into oral area 5a at the inner peripheral surface of lid main body 2.Inner bottom surface in lid main body 2 is provided with the outstanding maintaining part 2c towards peristome 2b.In Fig. 1, Fig. 2 and example shown in Figure 5, maintaining part 2c is the inner drum that keeps space 2d that becomes.Keep space 2d to become peristome 2d1 in Fig. 5 lower side.As shown in Figure 4, maintaining part 2c becomes the undercut portions that is made of to open direction bevelled dip plane gradually towards the peristome 2b of lid main body 2 its outer peripheral face 2e.That is, in example shown in Figure 5, to opening direction bevelled periphery dip plane, the bus angulation of opposed periphery dip plane is set at predetermined angular α towards peristome 2d1 in the outer peripheral face 2e of maintaining part 2c formation.

In Fig. 3 and Fig. 5, along the circumferential direction equally spaced be provided with the rib 2f of the reinforcing usefulness of extending along the vertical direction at the outer peripheral face of lid main body 2.

In Fig. 1, Fig. 2 and Fig. 5, middle plug 3 forms bowl (BOWL) shape, and, at the flange part 3a that the upside peripheral part is formed with laterally and level is stretched out.The edge portion of the oral area 5a of flange part 3a and airtight preservation container 5 connects airtight.In the example of Fig. 1, be provided with seal groove 3a1 at the downside (inboard) of flange part 3a.The edge portion of the oral area 5a of airtight preservation container 5 embeds in the seal groove 3a1 with pressed state.Therefore, in the raising plug 3 with respect to the degree of connecting airtight of the oral area 5a of airtight preservation container 5.

In addition, the inside of middle plug 3 shown in Figure 5 becomes accommodation space 3c, and the figure upside becomes peristome 3b.As Fig. 1, Fig. 5 and shown in Figure 7, accommodation space 3c becomes the undercut portions that is made of along the outer peripheral face 2e bevelled dip plane of described lid main body 2 the inner peripheral surface 3d of peristome side 3b.That is, in example shown in Figure 5, the inner peripheral surface 3d of middle plug 3 forms all dip plane in the direction bevelled that last direction is closed gradually, and the bus angulation of opposed interior all dip plane is the angle beta of regulation.Angle beta equates with described angle [alpha].

The marriage relation of covering main body 2 and middle plug 3 is described with reference to Fig. 1～Fig. 5.

The maintaining part 2c of lid main body 2 therefrom fills in the accommodation space 3c of peristome 3b plug 3 in inner bottom part embeds of 3 upper end.The outer peripheral face 2e of maintaining part 2c and the inner peripheral surface 3d of middle plug 3 angulation respectively satisfy α=β (Fig. 5), and, the empty small gap 6 (Fig. 4) of opening between the inner peripheral surface 3d of the outer peripheral face 2e of maintaining part 2c and opposed middle plug 3.

In addition, as shown in Figure 4, empty standard width of a room in an old-style house crack 7 (Fig. 4) between the inner peripheral surface of the inner bottom part side of outer peripheral face of middle plug 3 (being the outer peripheral face of flange part 3a in illustrative example) and lid main body 2.

Therefore, lid main body 2 is difficult for breaking away from mutually along the vertical direction with middle plug 3, thereby guarantees both integraty.Simultaneously, lid main body 2 and middle plug 3 have the embedding relation that can rotate independently each other.

Thereby middle plug 3 is installed on integratedly and covers in the main body 2, but as described later, and lid 1 closes when cover and when uncapping, and follows cover main body moving along the vertical direction, and middle plug 3 also moves along same direction by maintaining part 2c, but when covering main body and rotating, middle plug 3 self does not rotate.

As Fig. 1 and shown in Figure 4, the maintenance space 2d of maintaining part 2c is taken in, remained in to the bottom side of the demonstration body 4 of content (Fig. 4 upside).

Show that body 4 is identification indication mechanisms of the kind that is used to make the user discern content, character, historic records, method of operation etc.Show that body 4 is made of thin slice (chip), in Fig. 5 and example shown in Figure 8, form shallow lid shape.The outer peripheral face that shows body 4 is to tilt near the angle at the angle of inclination of the inner peripheral surface of the maintenance space 2d of maintaining part 2c.The bottom side that shows body 4 embeds in the maintenance space 2d of maintaining part 2c with tightlock status.

As one of identification display method that shows body 4, the method for identification that shows based on color is for example arranged.That is, corresponding with the kind of content etc., for example, under the situation of forbidding contacting with respect to content, show body 4 with red display, be to show with yellow under the situation of meta in the degree of forbidding contacting, under the situation of not forbidding contacting, show with blueness.In addition, as additive method, make the kind that shows body 4 self and content etc. corresponding and be configured as different shape, to discern.And then, as additive method, can discern showing body 4 mark literal or decorative pattern or other combinations.

Show body 4 because the user need discern, therefore, can observe this demonstration body from the outside of lid main body 2.Thereby whole or its a part of the forming of lid main body 2 transparent or semitransparently shows body 4 having an X-rayed.

To being set, the reason that shows body 4 describes.

Usually, as making the user grasp the discussion and the research of the kind etc. of the content (for example preserving liquid) be stored in airtight preservation container from the outside, adopt and in the material of airtight preservation container, sneak into color coating, make the painted mechanism of integral container, to the outside face mark literal of airtight preservation container or the painted identification indication mechanism of decorative pattern.

Yet, the situation based on painted identification indication mechanism that does not adopt as above-mentioned is also arranged.For example, to preserve under the situation of liquid long preservation, produce following problem, that is, preserve strippings such as making the plasticizer that comprised in colorant material or that be coated in container outer surface of sneaking into airtight preservation container and lead causes preserving liquid to described preservation liquid purity reduction owing to long-time.

In this case, as shown in Figure 1, fill in being configured in the maintaining part 2c of 3 accommodation space 3c if will show body 4, then since show body 4 not can with the content direct contact, therefore, the problems referred to above can not take place, need be with respect to the painted identification indication mechanism of realizing of airtight preservation container.

Show that 4 pairs of lids 1 of body are the parts that must owe, therefore be installed on as required in the maintaining part 2c.

Secondly, describe covering 1 the usage that makes.

As shown in Figure 4, in the lid main body 2 of lid 1, dispose the demonstration body 4 of middle plug 3 and content.

Collocation method is as follows.

Under the state of the maintenance space 2d of the maintaining part 2c of the bottom side insert cover main body 2 that shows body 4, the peristome 3b of plug 3 was pressed in the accommodation space 3c this maintaining part gradually during the lower end side of maintaining part inserted.Along with being pressed into, the outer peripheral face 2e of the maintaining part that has a down dip in this pressing force effect pushes the inner peripheral surface 3d of peristome laterally, and maintaining part arrives position shown in Figure 4 immediately, and maintaining part is embedded in the peristome of accommodation space, thereby lid main body 2 combines with middle plug.At this moment, the empty standard width of a room in an old-style house crack 6 of the inner peripheral surface 3d of the outer peripheral face 2e of maintaining part 2c and middle plug 3 and opposed (Fig. 4).

Closing when covering, make and cover the upper end that main body 2 covers the oral area 5a of airtight preservation container 5, make and cover the main body rotation, make the external thread part 5b of oral area 5a be screwed into the internal thread part 2a that covers main body, the lid main body moves downwards in rotation gradually, the upper end of oral area enters and directly in the indentation sealing groove 3a1, shown in Figure 1 being screwed into the finish time, stops to cover the rotation of main body.At this moment, the flange part 3a sky standard width of a room in an old-style house crack 7 of inner peripheral surface and the middle plug 3 of the inner bottom part side of lid main body 2 and opposed (Fig. 1).

Consequently, as shown in Figure 1, lid main body 2 is installed on oral area 5a, and the oral area 5a of 1 pair of airtight preservation container 5 of lid carries out airtight.

When uncapping, with lid 1 from state shown in Figure 1 to close direction rotation opposite when cover, middle plug 3 rises gradually with covering main body 2 under non-rotary state, pulls down from the upper end of the oral area 5a of airtight preservation container 5 immediately.

The maintaining part 2c of the lid main body 2 of lid 1 shown in Figure 1 and in plug 3 be in chimerism each other, but the maintaining part 2c of the lid main body 2 of a side becomes the undercut portions that is made of to open direction bevelled dip plane gradually towards the peristome 2b of lid main body its outer peripheral face 2e.The middle plug 3 of opposite side becomes the undercut portions that the inner peripheral surface 3d by the peristome 3b of its accommodation space 3c constitutes along described outer peripheral face bevelled dip plane, described outer peripheral face and the empty each other standard width of a room in an old-style house of described inner peripheral surface crack 6 and opposed.In addition, opposed as the outer peripheral face of the flange part 3a of the upside peripheral part of middle plug 3 with the mutual empty standard width of a room in an old-style house of the inner peripheral surface crack 7 of the inner bottom part side (Fig. 4 upside) of lid main body 2.Therefore, in making the process of implementing to close when covering main body 2 rotation, middle plug 3 does not rotate linkedly with the rotation of maintaining part 2c, follows cover downwards mobile of main body, in plug also move downwards, thereby embed in the oral area 5a of airtight preservation container 5 and airtight oral area.In closing the process of lid, because the rotary manipulation that needs to cover main body 2 carries out smoothly, therefore, internal thread part 2a and and the external thread part 5b of the oral area 5a of the airtight preservation container 5 of its ingear between sky open predetermined gap, therefore, become the unfixed state of the S. A. that covers main body.Yet middle plug 3 becomes under 6,7 effects of gap and the S. A. of lid main body 2 has nothing to do, and the center state of filling in being somebody's turn to do consistent with the center of the oral area of airtight preservation container 5, and therefore, under the pressing force effect of lid main body, middle plug 3 is pressed in the oral area 5a swimmingly.In addition, in closing the process of lid, middle plug 3 only moves downwards but does not rotate, and therefore, the outer peripheral face of middle plug can not damage the inner peripheral surface of the oral area 5a of airtight preservation container 5.

Like this, when uncapping and close under any one situation when cover, middle plug 3 does not descend and rises with covering main body 2 rotatably at lid 1, the releasing that can install and install under the situation of the inner peripheral surface of the oral area 5a that can not scratch airtight preservation container 5.

In addition, the seal groove 3a1 of the flange part 3a of middle plug 3 is with chimeric with the oral area 5a fully enclosed state of airtight preservation container 5, and therefore, even under the effect of the variation of stress for a long time, the seal-off pressure of middle plug can not reduce yet.

Thereby airtight preservation container 5 is by lid shown in Figure 11 high-seal, and content is not saved into and can goes bad because of long preservation.

In lid shown in Figure 1, show that body 4 is configured in the accommodation space 3c of middle plug 3, therefore can not have influence on the content of airtight preservation container, identification indication mechanisms such as color can be provided.

(second embodiment)

Other modes of the lid of airtight preservation container of the present invention are described with reference to Fig. 9～Figure 12.

The structure of the main portion of graphic lid 11 and the lid of Figure 1 and Figure 21 are general, and different parts is described, and except that necessary situation general-duty are partly omitted explanation.

The maintaining part 12c of lid main body 12 shown in Figure 9 becomes the undercut portions that is made of to the direction bevelled dip plane of closing gradually towards the peristome 12b of lid main body its outer peripheral face 12e.In maintaining part 12c shown in Figure 11, be formed with the roughly semi-round engaging edge 12g of portion of section at the inner peripheral surface of the peristome 12d1 that keeps space 12d.

In Fig. 9 and middle plug 13 shown in Figure 11, be provided with towards peristome 13b from the inner bottom surface of accommodation space 13c and keep protuberance 13g.Form the engaging recessed part 13h of groove shape along the complete cycle of the peripheral part that keeps protuberance 13g.

The maintaining part 12c of lid main body 12 and the marriage relation of middle plug 13 are described.

As Fig. 9 and shown in Figure 11, in a side, the maintaining part 12c of lid main body 12 is accommodated in the accommodation space 13c of middle plug 13 by peristome 13b.At opposite side, the maintenance protuberance 13g of middle plug 13 is accommodated in the maintenance space 12d of maintaining part 12c by peristome 12d1.

In the described state that is contained, 18 ground, the empty standard width of a room in an old-style house crack of the engaging edge 12g of portion of maintaining part 12c and the engaging recessed part 13h of middle plug 13 engages and are held in maintenance protuberance 13g.In addition, between the inner peripheral surface 13d of the peristome 13b of the outer peripheral face 12e of maintaining part 12c and middle plug 13 by empty standard width of a room in an old-style house crack 16.And then, empty standard width of a room in an old-style house crack 17 between the inner peripheral surface of the inner bottom part side of the outer peripheral face of the flange part 13a of middle plug 13 and lid main body 12.

Lid main body 12 is same with the relation of middle plug 3 with above-mentioned lid main body 2 with the marriage relation of middle plug 13, but the engaging recessed part 13h of the engaging edge 12g of portion by maintaining part 12c and middle plug 13 engage make in plug 13 with cover the main body 12 mobile interlock of direction and mobile along the vertical direction up and down.Yet because the existence in

gap

16,17,18, plug 13 does not rotate yet in 11 rotations even cover, and therefore, the outer peripheral face of middle plug 13 can not scratch the inner peripheral surface of the oral area of not shown airtight preservation container.

As Fig. 9 and shown in Figure 10, take at the maintenance space of maintaining part 12c 12d and to maintain discoideus demonstration thin slice and promptly show body 14.Show that body 14 is configured between the upper surface of maintenance protuberance 13g of the inner bottom surface that keeps space 12d and middle plug 13.

In graphic lid 11, same with lid 1 shown in Figure 1, owing to being screwed into of lid 11, middle plug 13 is pressed in the oral area of airtight preservation container under non-rotary state.

In Fig. 9, the internal thread part 12a of lid main body 1, the rib 12f that reinforces usefulness and seal groove 13a1 respectively with the internal thread part 2a of lid 1 shown in Figure 1, reinforce usefulness rib 2f and seal groove 3a1 corresponding.

(the 3rd embodiment)

Other modes of the lid of airtight preservation container of the present invention are described with reference to Figure 13 and Figure 14.

Lid 21 shown in Figure 13 is general with the main portion structure of the lid 1 of Figure 1 and Figure 2, and different parts is described, and except that necessary situation general-duty is partly omitted explanation.

The maintaining part 22c of lid main body 22 is configured as cylindric, and is outstanding towards peristome 22b from the inner bottom surface of lid main body.Be formed with card in the bottom of maintaining part 22c along complete cycle and end flange part 22h, end flange part and cover between the inner bottom surface of main body 22 at this card and be formed with engagement groove 22i.

In the upper end side crested of plug 23 accommodation space 23c, offer circular peristome 23b at the central portion of shaded portions.

Marriage relation to maintaining part 22c and middle plug 23 describes.

As shown in figure 13, maintaining part 22c enters in the accommodation space 23c by the peristome 23b of middle plug 23, and card ends flange part 22h and is positioned at accommodation space.The inner peripheral portion of the peristome 23b of middle plug 23 loosely embeds in the engagement groove 22i of maintaining part 22c via gap 26.Therefore, even maintaining part 22c follows the rotation of covering main body 22 and rotates, middle plug 23 also can not rotate, even and maintaining part move up and down and also be not easy therefrom to fill in 23 and break away from.

In graphic lid 21, same with lid 1 shown in Figure 1, maintaining part 22c lid main body 22 in rotation is screwed into the oral area (not shown) of airtight preservation container, but middle plug 23 moves downwards and is pressed in the oral area of airtight preservation container with maintaining part under non-rotary state.

In Figure 13, the rib 2f and the gap 7 of the internal thread part 2a of the internal thread part 22a of lid main body 22, the rib 22f that reinforces usefulness and the lid main body 2 that gap 27 corresponds respectively to lid shown in Figure 11, reinforcing usefulness.In addition, the flange part 23a of middle plug 23 and seal groove 23a1 correspond respectively to flange part 3a and the seal groove 3a1 that covers 1 middle plug 3.

Graphic lid 21 is not provided with the demonstration body.

(effect that first, second and third embodiment is total)

As mentioned above, in Fig. 1, Fig. 9 and the

lid

1,11,21 shown in Figure 13, though lid

main body

2,12,22 and

middle plug

3,13,23 are combined as a whole, but because even it becomes the also non-rotary marriage relation of plug in the rotation of lid main body, therefore plug can be pressed in the described oral area 5a under the situation of the inner peripheral surface of the oral area 5a that does not scratch airtight preservation container 5 swimmingly in when mounting cover, and the leakproofness of airtight preservation container can be not impaired.Therefore, can the airtight preservation container of repeated usage, like this, except that helping energy savings, also have good economy.And, owing to keep leakproofness, therefore, even in the keeping process or the medium container of handling process slip, content can not leak yet, and can guarantee the permanent leakproofness of airtight preservation container.And, because therefore plug 3,13,23 in installing and pull down when can and pulling down in the installation of covering

main body

2,12,22

covers

1,11,21 processing ease.

(effect that first and second embodiment is total)

Fig. 1 and

lid

1,11 shown in Figure 9 are provided with and show

body

4,14, therefore are preferred for carrying out the situation painted for the material of discerning airtight preservation container according to the difference of content and the situation of the demonstration that can not be used to discern on the surface of airtight preservation container.

(other examples of the structure division of first embodiment)

In lid shown in Figure 11, for maintaining part 2c, maintenance space 2d can be set in inside, can be solid construction.

(other examples of the structure division of second embodiment)

In lid shown in Figure 9 11, the outer peripheral face 12e of maintaining part 12c does not need for as shown can be vertical surface like that towards peristome 12d1 bevelled dip plane yet.

(other examples of the structure division of first and second embodiment)

Fig. 1 and

lid

1,11 shown in Figure 9 are provided with and show

body

4,14, but may not the demonstration body be set at each lid.

Claims

1. the lid of an airtight preservation container is characterized in that, possesses: the lid main body that can be installed on the oral area of airtight preservation container; Be disposed at the middle plug in this lid main body,

In described lid main body, be provided with the maintaining part of giving prominence to peristome from its inner bottom part,

The portion within it of filling in described is formed with the accommodation space that described maintaining part can enter from peristome, and is provided with the flange part that stretches out laterally and can connect airtight with the edge portion of described oral area at its peripheral part,

Described maintaining part by the peristome of plug in described with described in the plug empty standard width of a room in an old-style house of the mode unoccupied place that can rotate independently of one another embed described in plug, and be combined into and can move up and down with plug in described,

Separate opposed with gap between the inner peripheral surface of the described inner bottom part side of the outer peripheral face of the flange part of described maintaining part and described lid main body.

2. the lid of airtight preservation container according to claim 1 is characterized in that,

Maintaining part becomes the undercut portions that is made of to open direction bevelled dip plane gradually towards the peristome of lid main body its outer peripheral face, in plug become the undercut portions that the inner peripheral surface by the peristome of its accommodation space constitutes along described outer peripheral face bevelled dip plane, described outer peripheral face and described inner peripheral surface have opposed with gap each other.

3. the lid of airtight preservation container according to claim 1 is characterized in that,

Maintaining part is formed with the lid main body that keeps space and this maintenance space in inside peristome side becomes peristome, and, the engaging edge portion that is provided with in interior week at this peristome, middle plug is provided with the maintenance protuberance of giving prominence to and be formed with at peripheral part engaging recessed part from the bottom of its accommodation space towards peristome, the peristome of the maintenance protuberance of plug by described maintaining part is accommodated in the described maintenance space in described, the described engaging edge portion of described maintaining part with described in the engaging recessed part sky standard width of a room in an old-style house unoccupied place of plug engage and remain in described maintenance protuberance.

4. the lid of airtight preservation container according to claim 1 is characterized in that,

In the accommodation space of middle plug, dispose the demonstration body of content, can have an X-rayed described demonstration body from the lid external side of main body.

5. the lid of airtight preservation container according to claim 2 is characterized in that,

6. the lid of airtight preservation container according to claim 3 is characterized in that,

7. the lid of airtight preservation container according to claim 2 is characterized in that,

Maintaining part portion within it is formed with the maintenance space, disposes the demonstration body of content between the accommodation space of this maintenance space and middle plug, can have an X-rayed described demonstration body from the lid external side of main body.

8. the lid of airtight preservation container according to claim 2 is characterized in that,

Maintaining part portion within it is formed with the maintenance space, between the accommodation space of this maintenance space and middle plug, dispose the demonstration body of the content that covers shape, the bottom side of this demonstration body embeds described maintenance space with tightlock status, can have an X-rayed described demonstration body from the lid external side of main body.

9. the lid of leakproof tank according to claim 3 is characterized in that,

In the maintenance space of maintaining part, at the inner bottom surface in this maintenance space and keep disposing between the protuberance demonstration body of content, can have an X-rayed described demonstration body from the lid external side of main body.