JPH041100Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention involves attaching a lid abutting member to the opening of the container body, covering the opening of the lid abutting member with a lid, and using a tightening member to tighten the lid to the opening of the container body. The present invention relates to a sealing mechanism between a lid abutting member and a lid in a container with a lid that is tightened to seal the inside of the container.

Conventionally, as shown in FIG. 6, an opening 30a of a container body 30 is covered with a lid 31, and a flange 31a of the lid 31 and a flange 30b of the opening 30a of the container body are connected with a tightening member 32. Tighten the container body 3
Various structures are known as containers with lids that seal the inside of the container. For example, as shown in FIGS. 7 and 8, a plurality of convex portions 30b are provided on the outer peripheral surface of the opening 30a of the container body 30 at predetermined intervals in the circumferential direction.
..., 30b are formed to protrude, and the lid 31
The container body 30 is attached to the outer circumferential surface of the flange portion 31a.
Convex portions 31 correspond to the convex portions 30b, ..., 30b of
b, .
After inserting each of the convex parts 30b and 31b into each of the concave parts 32b of 2, the tightening member 32 is rotated by a medium angle α in FIG. Each tightening protrusion 32
In some cases, the convex portions 30b of the container body 30 and the convex portions 31b of the lid 31 are tightened in a direction toward each other to seal the inside of the container body 30.

In addition, as shown in FIGS. 9 and 10, as another structure, convex portions 31b, . ，
..., 30b are provided in a plurality of rows in the axial direction of the container body, and the tightening member 32 is also provided with each of the convex portions 30b, 30b.
..., 30b, 31b, ..., 31b are formed with recesses 32b, .
b, ..., 30b, 31b, ..., 31b, the tightening member 32 is attached to the container body 30 and the lid 31.
The lid 3 is rotated by the angle β in FIG.
1 and each convex part 30b,..., 30b of the container body opening 30a are tightened to seal the inside of the container body 30. In such a case, as shown in FIGS. 7 and 9, the lid 3 is fitted into the opening 30a of the container main body.
Seal members 33, 33 such as two O-rings are provided between the outer peripheral surface of the first protrusion 31c and the inner peripheral surface of the opening 30a of the container body 30. The opening 30a of the container body 30 is provided with a sealing member 34 such as a ring.
cover with a lid 31 and tighten both members 30, 31 with a tightening member 32.
By tightening, the inside of the container body 30 is sealed.

Problems to be Solved by the Invention Incidentally, in any of the above-mentioned containers, the portion provided with the sealing members 33 and 34 for sealing the lid 31 and the container body 30, that is, the lid 31
There are always gaps a and b between the opposing surfaces of the container body 30 and the container body 30, respectively. The allowable size of this gap is determined in relation to the pressure inside the container, and if the above-mentioned gap exceeds the allowable size, it becomes difficult to seal the inside of the container body 30 even with the seal members 33 and 34. It is necessary to adjust the dimensions of the gap to within the allowable dimensions. Therefore, in the structure described above, in order to keep the gap within the allowable gap, the lid 31
It is necessary to finish the facing surfaces of the container body 30 with high precision, and also finish the tightening portions between the tightening member 32, the lid 31, and the container body 30 with high precision.
In addition, it is necessary to accurately perform so-called centering work between each member.

However, in reality, there was a problem in that it was difficult to finish each part of each member with high precision.

Moreover, even with the structure described above, the axial direction of the container body 30 may be arranged along the lateral direction so that the container body 3
In the case where the lid 31 is opened and closed with respect to Since an unbalanced load is applied due to its own weight, it becomes difficult to insert and remove the protrusion 31c of the lid 31 from the opening of the container body, and the container body 30 and lid 3
There is a problem in that the so-called centering work with No. 1 becomes complicated.

Therefore, an object of the present invention is to solve the above-mentioned problems, and it is not necessary to make the dimensional accuracy of the gap between the lid and the opening of the container main body high;
To provide a sealing mechanism for a container with a lid, which can easily perform so-called centering work between the lid and the container body, and can reliably seal the lid and the container body.

Means for Solving the Problems In order to achieve the above object, the present invention provides a structure in which a lid abutting member is attached to the container body in advance so as to maintain airtightness, and a gap between the lid abutting member and the lid is provided. The inside of the container body was sealed by sealing the container body. That is, a lid abutting member is attached to the opening of the container body so as to be movable in the axial direction of the container, the opening of the lid abutting member is covered with a lid, and the lid and the container body are connected to each other via the lid abutting member. A container with a lid that seals the inside of the container body by tightening with a tightening member, wherein the lid abutting member biases the lid abutting member toward the lid side with respect to the opening of the container body. The member has a surface that intersects with the axial direction of the container and faces the inside of the container main body, and a surface that is along the surface that intersects with the axial direction of the container main body and faces the lid abutting member of the lid or the lid abutment member. The lid contacting member facing surface of the lid and the lid contacting member facing portion of the lid contacting member on any of the lid facing surfaces of the lid contacting member and facing along the container axial direction to the surface of the lid contacting member facing inside the container body. a first sealing member that seals between the lid facing surface and the outer surface of the lid contacting member facing the inner surface of the container body along the axial direction; Either of them is provided with a second sealing member that seals between the outer surface of the lid abutting member and the inner surface of the container body.

Effect of the invention In the above configuration, the opening of the lid abutting member previously attached to the container body is covered with a lid, and the lid is pressed against the lid abutting member against the biasing force of the biasing member. The lid and the container main body are tightened with a tightening member, and each member is sealed with each sealing member to seal the inside of the container main body.

Embodiments Below, embodiments of the present invention will be described in detail based on FIGS. 1 to 5.

As shown in FIGS. 1 to 3, the container having the lidded container sealing mechanism according to the present embodiment has convex portions at predetermined intervals on the outer peripheral surface of the annular opening 1a of the container body 1 having a U-shaped cross section. 1b, . . . , 1b are formed to protrude, and a projection 2b corresponding to the projection 1b, . ,...,2b
are formed so as to extend at predetermined intervals, and
A convex portion 2b of the lid 2,
..., 2b and the convex portion 1b of the container body opening 1a, ...,
Recesses 11a, ... 11a through which the 1b can be freely inserted.
(corresponding to 32b in FIG. 8), and
A convex portion 11 that tightens the convex portion 2b of the lid 2 through which the concave portion 11a is inserted between the concave portions 11a and the convex portion 1b of the container body opening 1a with the other end surface.
b, further comprising a lid abutting member 3 on either one of the container body opening 1a and the lid 2, and sandwiching the lid abutting member 3 between the container body opening 1a and the lid 2. After inserting the convex portion 2b of the lid 2 and the convex portion 1b of the container body opening 1a into the concave portion 11a of the clamping member 11, respectively, the clamping member 11 is rotated by a predetermined angle with respect to the lid 2 and the container body 1. Tightening member 11
Tighten the convex portion 2b of the lid 2 and the convex portion 1b of the container body 1 with the convex portion 11b of one end surface and the other end surface,
The container is configured to be sealed inside.

The lid abutting member 3 is an annular body and is fitted into the opening 1a of the container main body. This lid abutting member 3 is composed of a cylindrical main body part 3f and a thick projecting part 3g formed on the upper part of the main body part 3f to protrude outward in the radial direction,
Biasing members 17 are provided on this projecting portion 3g at regular intervals in the circumferential direction.

Each of the biasing members 17 includes a bolt 4 and a spring 5. Each bolt 4 is arranged along the axial direction of the container body and rotatably attached to the lid abutting member 3. The head 4a of this bolt 4 is fitted into the upper recess 3a of the lid abutting member 3, and a bolt rotation prevention ring 6 is placed on the bolt head 4a and the ring 6 is inserted into the upper recess 3a. The bolt 4 is prevented from rotating by fixing it with a rotation stopper screw 7. Into the lower recess 3b formed below the upper recess 3a of the lid abutting member 3, a lower part of the bolt 4 and the spring 5 externally fitted to the lower part of the bolt are fitted. The lower end threaded portion 4b of each bolt 4 is connected to the container main body opening 1a.
The spring 5 is compressed between the end surface 1c of the container body opening 1b and the bottom surface of the lower recess. The biasing force of the lid abutting member 3 against the lid opening side in the axial direction of the container body, that is, the spring pressure of the spring 5, is adjusted by the screwing amount of the bolt 4, and after adjusting the screwing amount of the bolt 4, the rotation stopper ring 6 is adjusted.
Stop the bolt 4 from rotating to maintain appropriate spring pressure.

The lid abutting member 3 has a small annular recess 3h formed in the upper end surface 3c, which is the lid facing surface of the main body 3f,
An annular first sealing member is provided in the small recess 3h.
1 O-ring 8 is provided, and when the first O-ring 8 is deformed by the pressure of the tightening member 11, the gap between the end surface 2c of the lid 2, which is the surface facing the lid abutting member, and the upper end surface 3c of the lid abutting member 3 is provided. so that it can be sealed tightly. Also,
On the outer peripheral surface of the lower end of the main body 3f of the lid abutting member 3,
Annular small recesses 3d and 3e are formed at regular intervals, and a second O-ring 9 and a third O-ring 10 are provided in the pair of small recesses 3d and 3e, respectively, and the lid abutting member 3
is fitted into the opening 1a of the container main body, and
By deforming the rings 9 and 10 (corresponding to the second sealing members), the space between the inner circumferential surface of the container main body opening 1a and the outer circumferential surface of the lid abutting member 3 can be sealed.

According to the above configuration, the lid contacting member 3 is fitted into the container main body opening 1a, and the main body portion 3f of the lid contacting member 3 is inserted into the container main body opening 1a.
between the outer peripheral surface of the container body and the inner peripheral surface of the container body opening
The ring 9 and the third O-ring 10 deform together to form a seal, and the lid abutting member 3 is attached to the end surface 1c of the opening 1a of the container body using a plurality of bolts 4, and is moved in the axial direction. Lid abutting member 3
is fixed to the container body 1. Then, the lid 2 is positioned on the upper end surface 3c of the lid abutting member 3, and the
When the lid 2 and the opening 1a of the container main body are tightened with a tightening member 11 similar to the tightening member 32 shown in FIG. The first O-ring 8 of the lid abutting member 3 is deformed by being pushed against the biasing force of the spring 5 of No. 3, thereby sealing the lid 2 and the lid abutting member 3.

According to the above embodiment, the lid 2 covers the opening of the lid abutting member 3, and the clamping member 11 is configured to press the lid 2 against the lid abutting member 3 against the biasing force of the spring 5. Lid 2 and container body 1 via lid abutting member 3
By tightening the O-links 8, 9, and 10, the inside of the container body can be easily and reliably sealed by deforming the O-links 8, 9, and 10.

In addition, when the pressure inside the container increases, for example, by injecting gas or liquid into the container body in a state where the inside of the container body is sealed, the lower end surface 3i of the main body portion 3f of the lid abutting member 3 Since it faces the inside, the pressure acting on the area of the annular portion of the axial container-side end surface 3i of the main body 3f of the lid abutting member 3 up to a distance l from the inner circumferential surface of the container main body The lid abutting member 3 is located on the container body side end surface 2c of the lid 2.
The first O-ring 8 is deformed by this pressing force, and the space between the end surface 2c of the lid 2 and the upper end surface 3c of the lid abutting member 3 can be more completely sealed. That is, the higher the pressure inside the container body, the more tightly sealed the lid 2 and lid abutting member 3 can be. Therefore, even if the sealing between the end surface 2c of the lid 2 and the end surface 3c of the lid abutting member 3 is somewhat poor, if the pressure inside the container increases, the pressure inside the container will be reduced to the lid abutting member as described above. In order to act on the lower end surface 3i of the contact member 3 and press the lid contact member 3 toward the lid 2, the distance between the end surface 2c of the lid 2 and the end surface 3c of the lid contact member 3 is further increased. In addition to being able to securely seal, the accuracy of the tightening portion between the tightening member 11, the lid 2, and the container body 1, and therefore the accuracy of the gap between the lid 2 and the lid abutting member 3, does not have to be very high. The inside of the container body can be sufficiently sealed.

When creating a vacuum inside the container body, the lid abutting member 3 is pressed against the lid end surface 2c by the spring pressure.
1 By deforming the O-ring 8, the lid end surface 2c
Since the space between the lid abutting member upper end surface 3c is sealed,
The first O-ring 8 is not pressed radially inside the container by the pressure outside the container, and the sealing performance between both end surfaces is not impaired.

In addition, the lid abutting member 3
By pressing the upper end surface 3c and the end surface 2c of the lid 2 against each other, it is possible to seal between both end surfaces, so even if misalignment occurs between the lid 2 and the lid abutting member 3, the lid 2
The airtightness between the end surface 2c of the lid abutting member 3 and the end surface 3c of the lid abutting member 3 is not affected, and the two end surfaces can be reliably sealed. Therefore, even in a type in which the axial direction of the container body 1 is arranged along the lateral direction and the lid 2 is opened and closed with respect to the container body 1, the opening/closing portion between the lid 2 and the container body 1, that is, the lid abutting member 3 is Since the sealing surface between the end surface 3c and the end surface 2c of the lid 2 is a surface that intersects with the axial direction of the container body, even if the two end surfaces are slightly shifted from each other as described above, there is no effect on the sealing performance between the two end surfaces.
Even if an unbalanced load is applied to the lid 2 and the container body 1, it does not become difficult to open and close the lid 2 with respect to the container body 1, and the so-called centering work of the container body 1 and the lid 2 becomes easy.

In addition, as described above, the pressure inside the container body can more reliably seal the container, and the lid 2 and the lid abutting member 3 can be easily aligned.
As the sealing member for sealing the lid abutting member 3, it is not necessarily necessary to use a special sealing member with extremely high sealing accuracy, and any commonly used sealing member such as an O-ring or self-adhesive gasket can be used. .

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various other ways. For example, as shown in FIG. 4, a groove 1d having a rectangular cross section is formed inside the opening 1a of the container main body, recesses 1e are formed at predetermined intervals within the groove 1d, and a bolt is inserted into each recess 1e. The head 4a of the bolt 4 is fixed via the fitting member 13, the spring 5 is externally fitted to the bolt 4, and the annular lid abutting member 3' is fixed to the upper threaded portion 4b of the bolt 4. Good too. In this case, the first O-ring 8 is provided on the upper end surface 3c of the lid abutting member 3' as described above, and the fourth O-ring 12 is provided between the outer peripheral surface of the lid abutting member 3' and the inner peripheral surface of the container body. When the lid abutting member 3' is fixed to the container body 1, the fourth O-ring 12 seals between the outer circumferential surface of the lid abutting member 3' and the inner circumferential surface of the container body 1, and the lid 2 and the lid are sealed. A first O-ring 8 is used to seal the contact member 3'. In addition, in FIG. 4, reference numeral 14 indicates a locking screw for the bolt 4.

Further, as shown in FIG. 5, the biasing member 17
These include not only the bolt 4 and the spring 5, but also an expansion member 15 that can be expanded by supplying fluid such as water, air, or oil, and the lid-facing surface of the opening 1a of the container body 1 and the lid abutting member. In preparation for between 3 and
Fluid may be supplied to the expansion member 15 from the fluid supply path 1f of the container main body opening 1a to cause the same effect as the spring pressure of the spring 5 described above. In addition,
In FIG. 5, 16 is an O-ring.

Further, the tightening member 11 may be of a known type, such as an annular type or a claw type.

Effects of the invention According to the above configuration, the lid covers the opening of the lid abutting member, and the tightening member is used to press the lid against the lid abutting member against the biasing force of the biasing member. If you tighten the lid and the container body through the contact member,
Each seal member can easily and reliably seal the inside of the container body.

In addition, since the surface of the lid abutting member that intersects with the container axis direction faces the inside of the container body, it is possible to inject gas or liquid into the container body while the inside of the container body is sealed. As the pressure increases,
Pressure inside the container main body acts on the surface of the lid abutting member that intersects with the container axis direction, and the lid abutting member is pressed toward the surface of the lid facing the lid abutting member, and the first sealing member closes the lid. The space between the lid abutting member facing surface and the lid facing surface of the lid abutting member is more completely sealed. That is, the higher the pressure inside the container body, the more tightly sealed the lid and the lid abutting member can be. Therefore, even if the airtightness between the surface of the lid facing the lid abutting member and the surface of the lid abutting member facing the lid is somewhat poor, if the pressure inside the container increases, the pressure inside the container will decrease as described above. acts on the surface of the lid abutting member facing inside the container body and urges the lid abutting member toward the lid. In addition, the accuracy of the tightening part between the tightening member, the lid, and the container body, and therefore the accuracy of the gap between the lid and the lid abutting member, does not have to be so high. Both can sufficiently seal the inside of the container body.

Further, when creating a vacuum inside the container body, the lid abutting member is pressed against the lid by the biasing force of the biasing member, and the first sealing member is placed between the lid abutting member facing surface of the lid and the lid facing surface of the lid abutting member. Since the space between the first and second surfaces is sealed, the first sealing member is not pressed toward the inside of the container along both opposing surfaces by pressure from outside the container, and the sealing performance between the two opposing surfaces is not impaired. In addition, since the lid-facing surface of the lid-abutting member and the lid-facing surface of the lid are sealed, even if misalignment occurs between the lid and the lid-abutting member, the lid-abutting member's lid By pressing the facing surface and the surface of the lid facing the lid abutting member against each other, it is possible to reliably seal the space between the two facing surfaces. Therefore, even in cases where the axial direction of the container body is arranged along the lateral direction and the lid is opened and closed relative to the container body, the opening/closing portion between the lid and the container body, that is, the lid facing surface of the lid abutting member and the lid. Since the sealing surface with the surface facing the lid abutting member is a surface that intersects with the axial direction of the container, even if the two facing surfaces are slightly shifted from each other as described above, there is no effect on the sealing performance between the two facing surfaces.
Even if an unbalanced load is applied to the lid and the container body, it will not become difficult to open and close the lid with respect to the container body, and the so-called centering work between the container body and the lid becomes easy. That is, in the past, the opening and closing parts of the lid and the container body were along the container axis, making it difficult to improve the sealing performance. The part between the lid abutting member and the container body, which corresponds to the sealing part with the main body, is
By attaching the lid abutting member to the container body in advance and sealing it with the second sealing member, the space between the two members does not open or close at all when the lid is opened or closed. By sealing only between the contact member facing surface and the lid facing surface of the lid contacting member, the sealing performance between the lid and the container body can be improved.

In addition, as described above, the pressure inside the container body can more reliably seal the lid and the container body, and
Since the centering work between the lid and the lid abutting member can be easily performed, there is no need for a special sealing member with extremely high sealing accuracy to seal the lid and the lid abutting member, such as an O-ring or the like. Any commonly used sealing member may be used, such as a self-sealing gasket.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing the sealing mechanism of the main body of a container with a lid according to an embodiment of the present invention, Fig. 2 is a plan view showing the locking ring of the bolt, etc., and Fig. 3 is a longitudinal cross-sectional view of the entire container. , FIG. 4 is a longitudinal sectional view of a sealing mechanism according to another embodiment, FIG. 5 is a longitudinal sectional view of yet another embodiment, FIG. 6 is a longitudinal sectional view of a conventional container, and FIGS. 7 and 8 9 and 10 are a vertical sectional view of a conventional sealing mechanism and a side view of the main part viewed from the direction of the arrow in FIG. 7, respectively, and FIGS. FIG. DESCRIPTION OF SYMBOLS 1...Container body, 1a...Opening, 1b...Protrusion, 1c...End face, 1d...Concave groove, 1e...Recess, 1f...Pressure fluid supply path, 2...Lid, 2a...
...flange part, 2b...convex part, 2c...end face, 3
...Lid abutting member, 3c... End face, 4... Bolt,
5... Spring, 8, 9, 10, 12, 16... O-ring, 11... Tightening member, 13... Bolt fitting member, 15... Expansion member, 17... Biasing member.

Claims (1)

[Claims for Utility Model Registration] (1) A lid abutting member 3 is attached to the opening 1a of the container body 1 so as to be movable in the axial direction of the container, and the opening of the lid abutting member 3 is covered with the lid 2. Lid contact member 3
The lid 2 and the container body 1 are tightened by a tightening member 11 to form a container with a lid that seals the inside of the container body 1, and the lid abutting member 3 It includes a biasing member 17 that biases the opening 1a of the container body 1 toward the lid 2, and a surface 3 that intersects with the axial direction of the container and faces the inside of the container body.
i, along a surface intersecting the axial direction of the container body 1 and facing the lid abutting member surface 2c of the lid 2 or the lid facing surface 3c of the lid abutting member 3.
The lid abutting member facing surface 2c of the lid 2 and the lid of the lid abutting member 3 are attached to a portion facing the surface 3i of the lid abutting member 3 facing inside the container body along the axial direction of the container. A first seal member 8 sealing between the opposing surface 3c and the outer surface of the lid abutting member 3 facing the inner surface of the container body or the outer surface of the lid abutting member of the container body 1 along the axial direction. The lid abutting member 3 is attached to any of the inner surfaces
A sealing mechanism for a container with a lid, characterized in that it includes second seal members 9 and 10 that seal between the outer surface of the container body 1 and the inner surface of the container body 1. (2) The closing mechanism for a lidded container according to claim 1, wherein the biasing member 17 includes a spring 5. (3) The biasing member 17 includes an expansion member 15 that expands with pressure fluid, and an opening 1a of the container body 1.
The sealing mechanism for a lidded container according to claim 1, which is a registered utility model, and comprises a supply path 1f formed in the inflatable member 15 for supplying pressure fluid to the expansion member 15.