JP4657739B2 - Positioning container - Google Patents

Description

  The present invention relates to a positioning container capable of reducing the size of a cap body in the vertical direction and simplifying assembly of the cap body and improving accuracy.

  Conventionally, a positioning mechanism capable of setting the screwing stop position of the cap body with respect to the container body when the container body is sealed, out of the containers sealed with the cap body screwed into the container body. Positioning containers with the following are known. Among them, for example, those disclosed in Patent Documents 1 and 2 are known as techniques related to a positioning container provided with a packing inside the top surface of the cap body.

  Patent Document 1 discloses an engagement structure for a cap body of a positioning container, and a diaphragm-like structure is formed on an inner side of the top surface of the cap body that is fitted into an opening of a container body via an O-ring. A packing is disposed, and a peripheral edge portion of the packing is locked to an annular protrusion formed on the inner periphery of the cap body. An annular seal projection that abuts the upper end of the opening of the container body is formed on the peripheral edge of the lower surface of the packing. The top of the is closed.

Patent Document 2 discloses a different-material sorting cap for a positioning container. By dipping the cap in water at the time of disposal, the interior frame and the exterior frame constituting the cap can be separated from each other. The elevating member corresponding to the packing has a shape in which a disk part is integrally formed at the lower end of the central shaft part, and a bulging part for closing the outlet of the container body is formed on the lower surface of the disk part. The seal ring, which is a cushion member, is composed of a central O-ring portion and a plurality of radial leaf spring portions formed on the peripheral portion thereof.
Japanese Patent Laid-Open No. 10-203547 JP 2000-153869 A

  By the way, in any of the above prior arts, since the packing is separated from the inside of the top surface of the cap body by the elastic action of the cushion member when the container body is not sealed, the top and bottom of the cap body top surface portion including the packing portion are The directional dimension was inevitably large. As a result, there is a problem that the degree of freedom in design design and decoration design is reduced.

  In any of the above prior arts, since the packing and the cushion portion are formed of separate and independent members, it is necessary to assemble both members individually when the cap body is assembled. As a result, it is time consuming and may cause a reduction in dimensional accuracy during assembly (this may cause a reduction in airtightness).

  The present invention was devised in view of the above-described conventional problems, and provides a positioning container capable of reducing the size of the cap body in the vertical direction and simplifying the assembly and improving the accuracy of the cap body. For the purpose.

The positioning container according to the present invention includes a packing provided inside the top surface of a cap body that is screwed into a container body at a screwing stop position, and the container is provided with the packing. The positioning container includes an elastic body that is pressed against and sealed while elastically deforming the opening of the main body, and the packing is directly fixed to the cap body, and the elastic body is attached to the packing. In order to obtain cushioning properties due to the bending of the packing, which is integrally formed by heavy molding, and the elastic body is in pressure contact with the opening of the container body during positioning between the packing and the cap body , characterized in that a gap for the cushion.

In the positioning container according to the present invention, it is possible to reduce the size of the cap body in the vertical direction, simplify the assembly of the cap body, and improve the accuracy. When the cap body is tightened to the positioning position, the packing bends to the cushion gap side. As a result, in addition to the cushioning property of the elastic body, the cushioning property due to the bending of the packing can be obtained. The operational feeling becomes even softer and better, and it is possible to more reliably prevent the cap body from being loosened due to the repulsive force of the packing or the elastic body.

  Hereinafter, preferred embodiments of a positioning container according to the present invention will be described in detail with reference to the accompanying drawings. In the first embodiment, as shown in FIGS. 1 to 3, as a positioning container 1, a container body 2 made of glass or synthetic resin and a container body 2 are screwed to seal the container body 2. A cream container made of a synthetic resin cap body 3 is illustrated.

  As shown in FIG. 1, the container body 2 includes a bottomed hollow cylindrical body 4 having a planar outer contour formed in a substantially square shape and containing contents, and on the body 4, A hollow cylindrical neck portion 6 whose upper end is opened to take out the contents through the shoulder portion 5 is formed to project upward, and this neck portion 6 forms a part of the outer peripheral wall of the container body 2. ing. On the other hand, the cap body 3 is formed in a substantially square shape whose planar outer contour matches the body portion 4, and a concave portion 7 is formed in the cap body 3 so that the cap body 3 can be attached to the cylindrical neck portion 6. For this purpose, a circular inner peripheral wall 8 is formed with an inner diameter that separates a slight gap S from the neck 6. Further, the cap body 3 is formed with a lip portion 9 having an inner diameter larger than the inner diameter R1 of the inner peripheral wall 8 at a lower end portion that comes into contact with the shoulder portion 5 when the container body 2 is sealed.

  A single convex thread 10 is formed around the neck 6. The outer surface of the convex thread 10 has an outer diameter smaller than the inner diameter of the rim 9 so that the cap body 3 can be attached to the neck 6, and the convex thread 10 has a dimension of the gap S. It is formed by protruding outward from the neck 6 with a larger dimension. That is, the convex thread 10 is formed as a thread having an outer diameter R2 that is larger than the inner diameter R1 of the inner peripheral wall 8. On the other hand, this also wraps around the inner peripheral wall 8 of the cap body 3 to form a single concave thread 11 that is longer than the convex thread 10 and screwed into the convex thread 10. The concave thread 11 is formed as a thread having a “valley diameter R3” corresponding to the convex thread 10 having an outer diameter R2 larger than the inner diameter R1 of the inner peripheral wall 8 by recessing the inner peripheral wall 8. The one end reaches the lip 9 and communicates with the lip 9. And the cap body 3 can be screwed into the neck part 6 by covering the cap body 3 on the neck part 6 from the mouth edge part 9 side and screwing the concave thread 11 to the convex thread 10, thereby the container body. 2 can be sealed.

  The following positioning mechanism is provided between the cap body 3 and the container body 2 in order to stop the screwing of the cap body 3 at a position that matches the outer contour of the container body 2. That is, the container body 2 protrudes upward from the corners extending from the shoulder portion 5 to the neck portion 6 directly below the lower end portion of the convex thread 10 and on the opposite side around the neck portion 6. A stop projection 12 is formed. On the other hand, the cap body 3 is formed with a pair of abutment protrusions 13 in the mouth edge portion 9 so as to protrude toward the recess 7 at positions corresponding to the pair of stop protrusions 12. In the illustrated example, the outer surface of each stop projection 12 has an outer diameter larger than the “valley diameter R3”, while the inner surface of each contact projection 13 is “valley diameter R3”. Have approximately the same inner diameter. Therefore, as shown in FIG. 2, when the cap body 3 is screwed into the neck portion 6 of the container body 2 to the end, the contact protrusions 13 of the cap body 3 abut against the stop protrusions 12 of the neck portion 6 and are locked. Then, further screwing movement of the cap body 3 is restrained and positioned.

  On the inner side of the top surface of the cap body 3, that is, on the surface of the recess 7, a circular thin plate-like packing 14 that covers substantially the entire surface is provided. Further, an annular elastic body 15 is provided on the lower surface side of the packing 14 to be pressed and sealed while being elastically deformed to the neck upper end 6a which is an opening of the container body 2 at the time of positioning. The packing 14 is made of, for example, polypropylene, and is directly fixed to the surface of the concave portion 7 of the cap body 3 by means such as ultrasonic bonding.

  The elastic body 15 is formed of, for example, silicon rubber or elastomer, and is integrally formed with the packing 14 by double molding. Duplex molding is a technology that allows two different materials to be joined together in the molding process to allow different material properties to coexist in a single molded product. And cost reduction can be achieved. In addition, in order that the elastic body 15 may not detach | leave from the packing 14, it is preferable that the packing 14 and the elastic body 15 are formed from a material with high mutual affinity.

As shown in FIGS. 2 and 3, the elastic body 15 includes an annular joint portion 16 integrally joined to the packing 14 and an annular contact portion 17 that contacts the neck upper end 6a. Is done. The shape of the contact portion 17 of the elastic body 15 is formed so as to protrude from the joint portion 16 toward directly below. A cushion gap G is provided between the packing 14 and the cap body 3. More specifically, the packing 14 is fixed to the inside of the top surface of the cap body 3 at a central portion concentric with the packing 14 (hereinafter referred to as the packing central portion 14a), and the packing peripheral portion 14b excluding the packing central portion 14a is fixed. On the upper surface side, a first notch 18 that is a gap G for cushioning is formed.

Cap body 3 is incorporated fully tightened onto the neck 6 of the container body 2, in a state of being positioned, pushed up by the contact portion 17 is neck upper end 6a of the elastic body 15, elastically deformed as crushed slightly vertically The container body 2 is sealed while being pressed. Further, when the cap body 3 is tightened to the positioning position, the contact portion 17 of the elastic body 15 exhibits cushioning properties. Specifically, in addition to the material itself having elasticity, the contact portion 17 is easily bent outward (expands in diameter) when pressed. Therefore, excessive force is not required for tightening, and the operation feeling is very soft and good.

  Further, due to the soft and good cushioning property of the contact portion 17 of the elastic body 15, the cap body 3 is completely tightened and sealed at the positioning position, and then the cap 14 is elastically repelled by the packing 14 and the elastic body 15. It is possible to surely prevent the screwing from being loosened, the positioning state not being maintained, and the sealing performance from being lowered.

  In the positioning container 1 according to the first embodiment described above, the packing 14 is directly fixed to the inside of the top surface of the cap body 3, so that the container body 2 is not sealed when the container body 2 is sealed by the cap body 3. The packing 14 is not separated from the inside of the top surface of the cap body 3 at any time. As a result, it is possible to reduce the size of the cap body 3 in the vertical direction, and the degree of freedom in design and decoration design is improved.

  In addition, the elastic body 15 that is a member that seals the opening of the container body 2 at the time of positioning and also a cushion member that exhibits cushioning properties at the time of positioning is integrally formed with the packing 14 by double molding. As compared with the case where the packing, the seal member, and the cushion member are formed as separate and independent members and assembled separately, the assembly of the cap body 3 can be simplified and the accuracy can be improved.

As shown in FIG. 3, in order to obtain a cushioning property due to the deflection of the packing 14 while the elastic body 15 is pressed against the neck upper end 6a of the container body 2 during positioning between the packing 14 and the cap body 3, The cushion gap G is provided. Specifically, since the elastic body 15 is located on the lower surface side of the packing peripheral edge portion 14b, the cap body 3 is screwed and finally tightened to the positioning position. The packing peripheral edge portion 14b bends toward the cushion gap G formed by the first notch 18. As a result, in addition to cushioning due to the contact portion 17 of the elastic body 15, cushioning due to bending of the packing peripheral edge portion 14b is obtained, so that the operational feeling during tightening becomes even softer and better. The cap body 3 is more reliably prevented from being loosened by the repulsive force of the packing 14 and the elastic body 15.

FIG. 4 shows a second embodiment of the positioning container according to the present invention. The configuration common to the first embodiment and the common operations and effects will be omitted and described. In the second embodiment as well, a cushion gap G is provided between the packing 14 and the cap body 3 as in the first embodiment . In this embodiment, it replaces with the 1st notch part 18 in 1st Embodiment , and the 2nd notch part 19 is provided in the top surface inner side of the cap body 3 in the location which faces the packing peripheral part 14b. As a result, a gap G is formed.

When the cap body 3 is screwed and finally tightened to the positioning position, the packing peripheral edge portion 14 b is bent toward the cushion gap G formed by the second notch portion 19. As a result, in the same way as in the first embodiment , in addition to the cushioning property by the contact portion 17 of the elastic body 15, the cushioning property by the bending of the packing peripheral edge portion 14b is obtained. In addition, the cap body 3 is more reliably prevented from being loosened by the repulsive force of the packing 14 and the elastic body 15.

In the second embodiment , the shape of the contact portion 17 of the elastic body 15 is slightly different from that of the first embodiment, and the first contact portion 17a formed so as to protrude downward from the joint portion 16; It is comprised from the 2nd contact part 17b formed so that it might protrude below and inner side from the inner side rather than the 1st contact part 17a of the junction part 16. As shown in FIG. The first contact portion 17a is smaller in the radial direction of the packing 14 than the contact portion 17 in the first embodiment , and has a thinner annular shape as a whole. Therefore, in a state where the cap body 3 is completely tightened and positioned on the neck portion 6 of the container body 2, the first contact portion 17a is pushed up by the neck upper end 6a and elastically deformed so as to be slightly crushed in the vertical direction. While being pressed, the container body 2 is sealed, and the second contact portion 17b is pushed up by the upper end 6a of the neck, elastically deformed so as to be slightly reduced in diameter while being in contact with the inner edge of the upper end 6a of the neck, and pressed. The container body 2 is double-sealed by both contact portions 17a and 17b.

Therefore, as for the cushioning property at the time of positioning, the first abutting portion 17a is smaller in the radial direction of the packing 14 than the abutting portion 17 in the first embodiment (thin width is narrow), and therefore elastically deforms. The second abutting portion 17b has a shape that easily bends (reduces diameter) inward when pressed, and therefore has a softer and better cushioning property than the first embodiment. Demonstrate.

  In each of the embodiments described above, the cream is exemplified as the contents of the positioning container, but it is needless to say that various liquids, powders, solids, and the like may be used.

It is a disassembled perspective view which shows 1st Embodiment of the positioning container concerning this invention. It is sectional drawing of the state of the positioning container of FIG. 1 in the state by which the cap body was clamped by the neck part of the container main body. FIG. 2 is a cross-sectional view of a main part of the positioning container of FIG. 1 in a state where a cap body is tightened and positioned on a neck part of the container main body. It is principal part sectional drawing of the state in which the cap body was clamped by the neck part of the container main body, and was positioned, which shows 2nd Embodiment of the positioning container concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Positioning container 2 Container body 3 Cap body 14 Packing 15 Elastic body G Gap for cushion

Claims (1)

A packing provided on the inner side of the top surface of the cap body to which the screwing stop position is positioned and screwed to the container body,
A positioning container provided with the packing, and comprising an elastic body that is pressed and sealed while being elastically deformed to the opening of the container body at the time of positioning,
The packing is directly fixed to the cap body,
The elastic body is formed integrally with the packing by double molding ,
A cushion gap is provided between the packing and the cap body in order to obtain cushioning due to the bending of the packing while the elastic body is in pressure contact with the opening of the container body during positioning. A positioning container characterized by.

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