JP5113377B2 - Closure and liquid material storage container - Google Patents

Description

  The present invention stores liquid materials ranging from low-viscosity liquid materials such as solvents and aqueous solutions to high-viscosity materials such as solder pastes, silver pastes, and adhesives. The present invention relates to a closure and a liquid material storage container for closing an opening communicating with a liquid feeder such as a pipe.

The storage container for storing the liquid material is filled with the liquid material in a state in which a closure such as a head cap is attached, and is stored or transported.
As a closure for a storage container for storing a liquid material, for example, there are those disclosed in Patent Documents 1 to 4. The closures exemplified in these documents prevent leakage of the liquid material from the opening on the side where the liquid material is stored in a storage container having openings at both ends. The structure of the storage container is such that, in the vicinity of the end on the side where the liquid material is stored, a thin nozzle-like inner cylinder in which the liquid material flows inside, and a screw formed on the inner peripheral surface formed outside the inner cylinder What has an outer cylinder is common.

JP 2003-010757 A JP 2003-175353 A JP 2004-174348 A Special table 2003-535624 gazette

In a storage container equipped with a conventional closure, there has been an accident that the inner cylinder is damaged as a result of impact and vibration. When the inner cylinder breaks, there is a problem that the stored liquid material leaks and the liquid material is wasted, and the surroundings are soiled by the leaked liquid material.
The inner cylinder is easily damaged, for example, during transportation and transportation of a liquid material that requires freezing and refrigeration. Liquid materials that require refrigeration and refrigeration are stored by freezing and refrigeration in each storage container after filling the storage container. In many cases, the inner cylinder is damaged by a strong impact and vibration.

  In view of the above problems, the present invention provides a closure and a liquid material storage container that can prevent leakage of the liquid material from the liquid material storage container and prevent damage to the inner cylinder of the liquid material storage container. The purpose is to do.

1st invention is formed between the inner cylinder (52) which has a liquid feeding port in the front-end | tip, the outer cylinder (53) formed so that the outer periphery of an inner cylinder may be covered, and an inner cylinder and an outer cylinder. A liquid feed port of a liquid material storage container that includes a connection groove (54) and a storage cylinder (51) having these at the tip, and the tip of the inner cylinder (52) is exposed to the outside of the outer cylinder (53) A cylindrical insertion part (12) to be inserted into the connection groove (54), an insertion hole (13) into which the inner cylinder (52) is inserted, and an insertion part. The relative position of the closure with respect to the storage cylinder (51) by the main body (11) (12) extending upward and facing the tip of the outer cylinder (53) and the tip of the outer cylinder (53) abutting and a shoulder portion for regulating a change (14), said insertion hole (13), located below the deepest part the shoulder portion (14), and, at the time of loading of the closure Fitting constitutes the bottom surface and the inner tube of the insertion hole (13) of the tip (52) to a depth abutting the upper surface of the body is a skirt (11) of said shoulder portion (14), insertion portion (12) When the closure is inserted, stress is applied to the closure between the tip of the outer cylinder (53) and the shoulder (14) so that the outer cylinder (53) contacts the shoulder (14). A lid for a liquid material storage container, wherein the inner cylinder (52) is provided with a gap that does not reach a breaking stress when contacted.
In a second aspect based on the first aspect , the insertion portion (12) has a height at which the bottom surface of the connection groove (54) and the tip of the insertion portion (12) abut when the lid is inserted. It is characterized by being configured.
According to a third invention, in the first or second invention, the connection groove (54) has a spiral groove (57) on an inner peripheral surface, and the insertion portion (12) has a spiral groove (57). And a projection for screwing with the peripheral surface.
The protrusion provided on the insertion portion (12) is formed on the outer peripheral surface or the inner peripheral surface so as to match the spiral groove (57) provided in the connection groove (54) of the storage container.
According to a fourth invention, in any one of the first to third inventions, an outer peripheral surface of the insertion portion (12) is formed into a tapered surface.
According to a fifth invention, in any one of the first to fourth inventions, an inner peripheral surface of the fitting insertion hole (13) is formed into a tapered surface.
According to a sixth invention, in any one of the first to fifth inventions, the main body is a cylindrical body having a diameter larger than an outer diameter of the storage cylinder (51).
According to a seventh invention, in any one of the first to sixth inventions, the main body (11) is knurled on a side surface.
An eighth invention is characterized in that, in any one of the first to seventh inventions, the main body (11) has a recess formed in a bottom surface.
According to a ninth invention, in any one of the first to eighth inventions, the main body (11) and the insertion portion (12) are integrally formed.
The tenth invention is formed between an inner cylinder (52) having a liquid feed port at the tip, an outer cylinder (53) formed so as to cover the outer periphery of the inner cylinder, and the inner cylinder and the outer cylinder. A liquid material storage container comprising a connecting groove (54) and a storage cylinder (51) having these at the tip, wherein the tip of the inner cylinder (52) is exposed to the outside of the outer cylinder (53), A liquid material storage container into which a closure according to any one of the first to ninth inventions is inserted.

  According to the present invention, it is possible to effectively prevent damage to the inner cylinder by defining the displacement of the inner cylinder of the liquid material storage container at a position before the fracture occurs.

  Hereinafter, the details of the present invention will be described with reference to examples, but the present invention is not limited to these examples.

The closure and storage container of a present Example are demonstrated with reference to FIGS. 1-3.
≪Configuration of closure 10 ≫
As shown in FIG. 1, the closure 10 of the present embodiment has an insertion portion 12 formed to extend upward from the upper surface of the main body 11. An opening is provided on the upper surface of the insertion portion 12 and constitutes a fitting insertion hole 13.
A spiral protrusion 17 is formed on the outer peripheral surface of the insertion portion 12 so as to fit into the spiral groove 57 of the storage container 50, and serves as a screw. At this time, the spiral groove 57 and the protrusion 17 may be configured to serve as a double thread.

The upper surface of the main body 11 is opposed to the tip of the outer cylinder 53 and constitutes a shoulder 14 that defines the displacement position of the outer cylinder 53. In the present embodiment, the upper surface of the main body 11 is configured as a flat plane, but a plurality of dot-like protrusions may be arranged in an annular shape. In this case, the protrusion may be made of an elastic body, but what kind of structure is made depends on the cost.
The side surface of the main body 16 is knurled and has a non-slip groove 16 (not shown in FIG. 1A).

  A recess 15 is formed on the bottom surface of the main body 11. The recess 15 is for storing the liquid material that has leaked when the lid 10 is detached from the storage container 50. In production sites, etc., due to pot life and quality, liquid materials that have been used once are used up to the end or discarded even during use, so the detached closure 10 is not used again. Can be used like this.

≪Configuration of storage container 50≫
The storage container 50 of the present embodiment is configured like the storage container 50 illustrated in FIG. 2, for example, and prevents leakage of the liquid material stored in the storage cylinder 51 by inserting the lid 10. ing.
The storage container 50 includes a storage cylinder 51 in which liquid is stored, and an inner cylinder 52 having a smaller diameter than the storage cylinder 51 so that the storage cylinder 51 and the storage space communicate with each other. An outer cylinder 53 is formed continuously with the outer peripheral surface of the storage cylinder 51. A connection groove 54 is formed between the outer cylinder 53 and the inner cylinder 52. A spiral groove 57 is formed in the connection groove 54, and the protrusion 17 of the closure 10 is fitted.
In addition, it is preferable to form the outer peripheral surface of the inner cylinder 52 in a taper surface. In this case, the inner peripheral surface of the insertion hole 13 is also formed into a tapered surface.

Both the storage container 50 and the closure 10 of the present embodiment are made of a plastic material (a resin material such as PP or PE). The closure 10 is preferably made of a softer material than the storage container 50 in order to reduce damage to the storage container 50.
Needless to say, the lid 10 of this embodiment can be inserted even when the storage container 50 is made of a metal material.

≪Insertion≫
FIG. 3 is an enlarged cross-sectional view of a main part of the storage container 50 with the closure 10 inserted.
The inner cylinder 52 of the storage container 50 is inserted into the fitting hole 13 of the closure 10, and the spiral groove 57 formed on the inner peripheral surface of the outer cylinder of the storage container is screwed with the protrusion 17 of the closure 10. In this state, the closure 10 is inserted and fixed to the storage container 50.
The closure tool 10 is inserted by rotating the closure tool 10 along the spiral groove 57 with respect to the storage container 50, so that the protrusion 17 of the closure tool 10 is screwed into the spiral groove 57. This is done by causing the insertion portion 12 of the closure 10 to enter the connection groove 54. The tip of the insertion portion 12 of the closure 10 abuts on the bottom surface of the connection groove 54 or the tip of the inner cylinder 52 abuts on the bottom of the fitting insertion hole 13 of the closure 10 so that the insertion portion 12 is contacted. Intrusion is stopped.
The storage container 50 is inserted in and attached to the closure 10 so as to be freely detachable. Removal of the lid 10 can be easily performed by rotating the lid 10 in the reverse direction from the time of insertion.
The helical groove 57 and the projection 17 of the closure 10 are formed by a male screw and a female screw of a taper screw, so that the storage container 50 of the insertion portion 12 of the closure 10 is tapered by a taper action. It can also be set as the structure which stops entering into the connection groove | channel 54. FIG.

In FIG. 3, the distal end of the insertion portion 12 of the closure 10 abuts the bottom surface of the connection groove 54 of the storage container 50, and the distal end of the inner cylinder 52 of the storage container 50 is the insertion insertion hole 13 of the closure 10. The closure 10 is inserted in contact with the bottom. In this way, when both the tip of the insertion portion 12 of the closure 10 and the tip of the inner cylinder 52 of the storage container 50 are in contact with each other, the leakage path of the liquid material is double-sealed. It is effective for prevention of leakage.
It goes without saying that it is not an essential element that the tip of the insertion portion 12 of the closure 10 abuts on the bottom surface of the connection groove 54. This is because, depending on the storage container 50, it may be difficult to make the tip of the insertion portion 12 come into contact, for example, the bottom surface of the connection groove 54 may be slanted or ribs may be provided radially. In such a case, the fixability of the closure 10 may be enhanced by the bottom surface of the insertion hole 13 and the shoulder 14.

Whether the gap is provided between the tip of the outer cylinder 53 of the storage container 50 and the shoulder portion 14 (see FIG. 4) or the two are brought into contact with each other (see FIG. 6). Is a design matter determined according to the material and application of the storage container 50.
In FIG. 4, the distal end of the outer cylinder 53 of the storage container 50 is disposed at a position that is spaced apart from the shoulder 14 of the closure 10 with a slight gap. When the storage container 50 is assumed to expand, the expansion can be absorbed by providing a slight gap. Further, as shown in FIG. 5, even when stress is applied to the closure 10, a buffering effect can be achieved. On the other hand, the outer cylinder 53 comes into contact with the shoulder 14, so that the closure 10 The relative position change with respect to the storage cylinder 51 can be minimized. That is, a change in the relative position of the closure 10 with respect to the storage cylinder 51 causes a deformation action on the inner cylinder 52, but the movement of the outer cylinder 53 is restricted by the shoulder 14 of the closure 10. The deformation operation of the inner cylinder 52 is also restricted before the inner cylinder 52 is broken, and as a result, the inner cylinder 52 can be prevented from being damaged.
The slight gap formed between the tip of the outer cylinder 53 and the shoulder portion 14 is a gap where the inner cylinder 52 does not reach breaking stress when the outer cylinder 53 comes into contact with the shoulder portion 14. In addition, it is preferable that the clearance does not exceed the elastic limit of the inner cylinder 52 because deformation of the inner cylinder 52 can be prevented.

  In FIG. 6, the distal end of the outer cylinder 53 of the storage container 50 is disposed at a position in contact with the shoulder portion 14 of the closure 10. Thus, when the position where the tip of the outer cylinder 53 contacts the shoulder portion 14 is fixed, it is possible to reliably prevent the relative position of the closure 10 from changing relative to the storage cylinder 51, and as a result, the inner cylinder 52 is damaged. Generation of unnecessary stress can be prevented more reliably. When the expansion of the storage container 50 does not become a problem or when the closing part 10 is formed of an elastic member, it is assumed that the configuration of FIG. 6 is selected.

  According to the lid 10 of the present embodiment configured as described above, it is possible to prevent leakage of the liquid material from the storage container 50 and to prevent the inner cylinder 52 of the storage container 50 from being damaged.

The closing tool 10 of a present Example is demonstrated with reference to FIG. 7 and FIG. The configuration of the storage container 50 is the same as that of the first embodiment.
The closure 10 of the present embodiment is the same as the first embodiment in that it includes a main body 11, an insertion portion 12, a fitting insertion hole 13, and a shoulder portion 14, but the insertion portion 12 has a protrusion 17. It differs from the point which does not have knurl processing in the point which the side surface of the main body 11 is not knurled.
Since the closure 10 of the present embodiment does not have the protrusion 17 in the insertion portion 12, only by fitting the inner cylinder 52 and the fitting insertion hole 13 and fitting with the connection groove of the insertion portion 12, The closure 10 is fixed. For this reason, it is preferable that the main body 11 is made of an elastic material so that the insertion portion 12 sandwiches the inner cylinder 52 inserted into the insertion hole 13.

FIG. 8 is an enlarged cross-sectional view of a main part of the storage container 50 with the closure 10 inserted.
The lid 10 is inserted by inserting the insertion portion 12 of the lid 10 into the connection groove 54. At this time, if the closure tool 10 is advanced with respect to the storage container 50 while being rotated, the insertion is easy. The tip of the insertion portion 12 of the closure 10 abuts on the bottom surface of the connection groove 54 or the tip of the inner cylinder 52 abuts on the bottom of the fitting insertion hole 13 of the closure 10 so that the insertion portion 12 is contacted. Intrusion is stopped.
The storage container 50 is inserted in and attached to the closure 10 so as to be freely detachable. Removal of the lid 10 can be easily performed by retracting the lid 10.

The closing tool 10 of a present Example is demonstrated with reference to FIG. The configuration of the storage container 50 is the same as that of the first embodiment.
The closure 10 of the present embodiment is different from the first embodiment in that the insertion portion 12 is provided with a protrusion 17 only at the tip and the side surface of the main body 11 is not knurled.
The protrusion 17 provided in the insertion part 12 is fitted into a spiral groove 57 that is a screw groove provided in the storage container 50. The closure 10 is inserted by inserting the insertion portion 12 of the closure 10 into the connection groove 54 while screwing the projection 17 into the spiral groove 57. The tip of the insertion portion 12 of the closure 10 abuts on the bottom surface of the connection groove 54 or the tip of the inner cylinder 52 abuts on the bottom of the fitting insertion hole 13 of the closure 10 so that the insertion portion 12 is contacted. The intrusion is stopped as in the first embodiment.

The closure 10 of a present Example is demonstrated with reference to FIG. The configuration of the storage container 50 is the same as that of the first embodiment.
The closure 10 of the present embodiment is different from that of the first embodiment in that a rod-like body 18 is provided in the insertion hole 13 and a flat portion 19 is provided on the side surface of the main body 11 with a tool.
The closure 10 of the present embodiment can insert the closure 10 into the storage container 50 with higher fixability by inserting the rod 18 into the liquid feed port of the inner cylinder 52. Further, when the liquid material is filled in the state where the lid 10 of the present embodiment is inserted, the phenomenon that the liquid material is not filled around the liquid feeding port of the inner cylinder 52 can be avoided.
Moreover, since it has the plane part 19 in the side surface of the main body 11, it is possible to automate the process of inserting the closure 10 in the storage container 50. The side surface of the main body 16 excluding the flat surface portion 19 is knurled and has a non-slip groove 16 (not shown in FIG. 10A).

BRIEF DESCRIPTION OF THE DRAWINGS (a) Schematic top view of the closure tool concerning Example 1, (b) Schematic principal part sectional front view, (c) Schematic bottom view. It is a schematic principal part sectional drawing of the storage container in which the closure shown in FIG. 1 is inserted. It is principal part sectional drawing of the state which inserted the closure tool concerning Example 1. FIG. It is a principal part side view explaining the state which provided the clearance gap between a closure tool and an outer cylinder. It is a principal part side view explaining the displacement of a closing tool. It is a principal part side view explaining the state contact | abutted to the closing tool and the outer cylinder. It is the (a) schematic top view of the closure of the liquid material storage container which concerns on Example 2, (b) A schematic principal part cross-sectional front view, and (c) A schematic bottom view. It is principal part sectional drawing of the state which inserted the closure tool concerning Example 2. FIG. It is (a) schematic plan view, (b) general principal section front view, and (c) schematic bottom view of a closure concerning Example 3. It is (a) schematic plan view, (b) schematic principal part cross-section front view, and (c) schematic bottom view of the closure according to Example 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Closure 11 Main body 12 Inserting part 13 Insertion hole 14 Shoulder part 15 Recessed part 16 Non-slip groove (knurling)
17 Projection 18 Bar-shaped body 19 Flat surface 50 Storage container 51 Storage cylinder 52 Inner cylinder 53 Outer cylinder 54 Connection groove 55 Discharge port 56 Brim 57 Spiral groove

Claims (10)

An inner cylinder (52) having a liquid feed port at the tip, an outer cylinder (53) formed so as to cover the outer periphery of the inner cylinder, and a connection groove (54) formed between the inner cylinder and the outer cylinder; And a storage cylinder (51) having these at the tip, and a closure for closing the liquid feed port of the liquid material storage container in which the tip of the inner cylinder (52) is exposed to the outside of the outer cylinder (53) Because
A cylindrical insertion part (12) to be inserted into the connection groove (54), an insertion hole (13) into which the inner cylinder (52) is inserted, and a main body from which the insertion part (12) extends upward. (11) and a shoulder (14) that opposes the distal end of the outer cylinder (53) and regulates the relative position change of the closure with respect to the storage cylinder (51) by contacting the distal end of the outer cylinder (53). With
The deepest portion of the insertion hole (13) is positioned below the shoulder (14), and the bottom surface of the insertion hole (13) and the inner cylinder (52) when the lid is inserted. ) To the depth that the tip of the
The shoulder portion (14) is constituted by the upper surface of the main body (11) which is a skirt portion of the insertion portion (12),
When a stress is applied to the closure between the tip of the outer cylinder (53) and the shoulder (14) when the closure is inserted, and the outer cylinder (53) comes into contact with the shoulder (14) A lid for a liquid material storage container, wherein the inner cylinder (52) is provided with a gap that does not reach a breaking stress. The said insertion part (12) is comprised at the height which the bottom face of a connection groove | channel (54) and the front-end | tip of an insertion part (12) contact | abut at the time of insertion of a closing tool. closure of the liquid material reservoir container 1. The connection groove (54) has a spiral groove (57) on the inner peripheral surface,
The said insertion part (12) has a projection part for screwing together with a helical groove | channel (57) in the surrounding surface, The closure tool of the liquid material storage container of Claim 1 or 2 characterized by the above-mentioned. The outer peripheral surface, the closure of one of the liquid material storage container of claims 1 to 3, characterized in that it is formed on the tapered surface of the insertion portion (12). The lid for a liquid material storage container according to any one of claims 1 to 4 , wherein an inner peripheral surface of the insertion hole (13) is formed into a tapered surface. The said main body is a cylindrical body larger than the outer diameter of the said storage cylinder (51), The closure tool of the liquid material storage container in any one of Claim 1 thru | or 5 characterized by the above-mentioned. The lid of the liquid material storage container according to any one of claims 1 to 6 , wherein the main body (11) is knurled on a side surface. The said main-body (11) has the recessed part formed in the bottom face, The closure of the liquid material storage container in any one of Claim 1 thru | or 7 characterized by the above-mentioned. The said main body (11) and the said insertion part (12) are integrally molded, The closure tool of the liquid material storage container in any one of Claim 1 thru | or 8 characterized by the above-mentioned. An inner cylinder (52) having a liquid feed port at the tip, an outer cylinder (53) formed so as to cover the outer periphery of the inner cylinder, and a connection groove (54) formed between the inner cylinder and the outer cylinder; , and a reservoir tube having these to the tip (51), the distal end portion of the inner tube (52) is a liquid material reservoir that is exposed to the outside of the outer cylinder (53), of claims 1 to 9 A liquid material storage container into which any one of the closures is inserted.