JP5874206B2 - Container with contents - Google Patents

Description

  The present invention relates to an occlusion body containing a liquid or powder or a container containing a bag.

As a method for sealing the contents in a container, an ultrasonic welding technique is generally known. Specifically, in a tail plug that is air-tightly attached to an ink tank of an ink pen or ink cartridge, a writing instrument ink in which a rib that becomes thicker from the center side to the peripheral side is formed inside the top part of the tail plug. It is the tail plug of the tank.

Japanese Patent Application No. 10-16469.

  However, according to the prior art, since the ultrasonic welding is performed while the thick rib of the tail plug enters the ink tank, the ink filled in the ink tank overflows due to the penetration of the thick rib, May adhere to the surface. Further, in an applicator in which an occlusion body impregnated with ink is arranged in an ink tank, there is a possibility that the skin of the occlusion body is sandwiched between welding surfaces. As a result, there was a risk of welding failure, and therefore there was a risk that a gap would occur and ink leakage would occur, or that the tail plug that would have been welded would fall out of the ink tank. .

In the present invention, contents are arranged inside a container, and the container is composed of a container main body and a lid, and a presser rib is formed on the lid toward the contents, and the presser rib is used as the content. The welding rib is formed on the lid or the container body, the height of the welding rib is made lower than the length of the pressing rib, and the contents are compressed by the pressing rib. and summarized in that the <br/>.

In the present invention, contents are arranged inside a container, and the container is composed of a container main body and a lid, and a presser rib is formed on the lid toward the contents, and the presser rib is connected to the contents. The welding rib is formed on the lid or the container body, the height of the welding rib is made lower than the length of the pressing rib, and the contents are compressed by the pressing rib. Therefore, the container main body and the lid can be reliably welded without interposing foreign matters on the welding surface.

The longitudinal cross-sectional view showing the finished product of 1st Example. The longitudinal cross-sectional view showing before welding. FIG. 3 is a partial detail view of FIG. 1 and FIG. 2. Other plans for welded rib shape. Still another plan of welded rib shape. Still another plan of welded rib shape. The longitudinal cross-sectional view showing the finished product of 2nd Example. The longitudinal cross-sectional view showing before welding. Perspective view. The longitudinal cross-sectional view showing the finished product of 3rd Example.

  DESCRIPTION OF EMBODIMENTS Embodiments for carrying out the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment of the present invention. It is a writing instrument in which the occlusion body 1 in which ink is soaked into the shaft cylinder 4 is built. A pen tip 2 of a writing instrument is loaded below the shaft cylinder 4 in the figure. A tail plug 3 is fixed above the shaft cylinder 4 by welding. A plurality of ribs 4c are provided inside the lower side of the shaft cylinder 4, and the lower surface 1a of the occlusion body 1 is supported by the ribs 4c, and air exchange between the inner and outer sides of the shaft cylinder 4 is performed between the adjacent ribs 4c. Is possible. Further, the upper surface 1b of the occlusion body 1 is slightly lower than the apex of the welding rib 4b of the shaft tube 4, but is located at substantially the same height, and the outer circumferential surface of the occlusion body 1 is also slightly different. However, it is located inside the shaft cylinder 4 while having a gap. That is, the occlusion body 1 is built in the shaft tube 4 with almost no gap.

FIG. 2 shows a temporary assembly state before welding of the finished product shown in FIG. The pen tip 2 is inserted and fixed in the tip opening of the shaft tube 4, and the tail plug 3 is temporarily inserted after the occlusion body 1 is loaded. Thereafter, the tail plug 3 is welded and fixed to the shaft tube 4 by vibrating the ultrasonic welding horn H in contact with the upper surface 3 b of the tail plug 3.

A plurality of or circumferential ribs 3a are provided on the lower surface 3c of the tail plug 3 so as to face the occlusion body 1 side. A step portion 4a is formed on the inner diameter above the shaft tube 4, and a welding rib 4b is provided on the upper surface of the step portion 4a in a circumferential shape. The upper surface 1b of the occlusion body 1 is set in a state of being positioned below the apex of the welding rib 4b of the shaft tube 4. And the lower end of the rib 3a of the tail plug 3 is temporarily inserted in the state which contact | abutted to the upper surface 1b of the occlusion body 1. FIG. At this time, a clearance S is provided between the outer diameter of the tail plug 3 and the inner diameter of the shaft cylinder 4.

Next, as a method of ultrasonically welding the tail plug 3 to the shaft tube 4, a welding horn H is brought into contact with the upper part 3 b of the tail plug 3. When ultrasonic vibration is applied while the welding horn H is in contact with each other, the contacted ones are melted by friction, and the melted ones are solidified integrally. That is, they are integrated by welding. At this time, it is desirable that only the portion to be welded is in contact. This is why the clearance S is provided between the outer diameter of the tail plug 3 and the inner diameter of the shaft cylinder 4. In other words, without this clearance S, vibrations are transmitted to portions other than the portion to be welded, and eventually cracks may occur due to stress concentration near the central portion of the tail plug 3.
Further, in this welding process, the rib 3 a of the tail plug 3 is lowered while compressing the upper surface 1 b of the occlusion body 1. That is, since the upper surface 1b of the occlusion body 1 is compressed by the rib 3a, that is, the peripheral edge portion of the occlusion body 1 is pressed downward, the peripheral edge portion is not sandwiched between the welded portions.

In the first embodiment, the welding rib 4b has a vertical surface 4e on the inner wall side and an inclined surface 4f whose diameter decreases toward the upper side on the outer wall side. This is because the molten resin flows into the space 4g on the slope 4f side after welding. By letting the resin flow into the slope 4g, leakage from the outer wall 4h is prevented.
As described above, in this example, the occlusion body impregnated with ink is illustrated as an example of being arranged in the shaft cylinder 4, but other examples of being arranged in the shaft cylinder 4 include ink itself and powder. Is mentioned.

  A modification of the welding rib 4b will be described with reference to FIG. Contrary to the previous example, an inclined surface 4f that expands upward on the inner wall side and a vertical surface 4e on the outer wall side. This is because the resin melted after welding flows into the slope 4f side. The occlusion body 1 built in the shaft 4 is fixed by allowing the resin to flow into the inclined surface 4f. That is, the occluded body 1 is fixed to the shaft cylinder 1 by preventing molten resin from entering the slight gap between the shaft cylinder 4 and the occluded body 1 to prevent the shaft cylinder 4 from rattling.

Further, a modified example of the welding rib 4b will be described with reference to FIG. This is a welding rib whose longitudinal cross-sectional shape is an isosceles triangle. In this example, the flow rate is reduced by flowing the molten resin into both the inner diameter side and the outer diameter side of the welding rib 4b so that the amount of the molten resin is divided equally, that is, halved. It is hard to get out of burr.
In order to increase the capacity of the occlusion body 1, the vertical height 4i of the welding rib 4b may be increased. In that case, if the angle formed by the inclined surface 4f with respect to the stepped portion 4a is the same as the shape of the welding rib 4b, the use of the vertical side of the former right triangle is more effective than the latter isosceles triangle. Also, the vertical height 4i can be set high.

  A further modification of the welding rib 4b will be described with reference to FIG. This is an example in which the welding rib 4b is provided on the tail plug 3 side. In this example, the ultrasonic vibration of the welding horn H can be transmitted directly to the apex of the welding rib 4b without interposing an intermediate member. The top surface 1 b of the occlusion body 1 is located below the step portion 4 a of the shaft tube 4. By positioning the top surface portion 1b below the stepped portion 4a, the occlusion body 1 can be prevented from being caught in the welded portion.

  Although various shapes of the welding rib have been described above, it is basically preferable that the welding rib has a shape that spreads downward with the apex of the welding rib as the minimum width. In addition, when the welding area is sufficiently wider than the width of the welding rib, it is also preferable to provide a plurality of welding ribs.

  A second embodiment for carrying out the present invention will be described with reference to FIGS. This is a container in which a batting 6 soaked with perfume is incorporated in the box 5. A lid 7 is fixed to the top surface 5a of the box 5 by welding. In addition, a plurality of ribs 5 b are provided at the bottom of the box body 5 to support the lower surface 6 a of the batting 6. Even if the height of the batting 6 is changed by changing the height of the rib 5b, it is possible to cope with the change. The lid body 7 is provided with a plurality of holes 7d for releasing the scent of the internal filling 6 from the container.

FIG. 8 shows a temporary assembly state before the finished product is welded. After the batting 6 is loaded in the box 5, the lid 7 is temporarily placed. Thereafter, the vibration is started in a state where the ultrasonic welding horn H is in contact with the upper surface 7 b of the lid body 7. By applying this vibration, the lid 7 is welded and fixed to the box 5.

A plurality of or circumferential ribs 7 a are provided on the lower surface 7 c of the lid 7 so as to be directed toward the batting 6. And the step part 5c is formed in the inner side above the box 5, and the welding rib 5d is provided in the upper surface of the step part 5c at the periphery. Note that the upper surface 6 b of the batting 6 is located below the apex of the welding rib 5 d of the box 5. Then, the lower end of the rib 7 a of the lid body 7 is temporarily placed in contact with the upper surface 6 b of the batting 6. At this time, a clearance S is provided between the outer diameter of the lid 7 and the inner diameter of the box 5.

Next, as a method of ultrasonically welding the lid body 7 to the box body 5, the welding horn H is brought into contact with the upper part 7 b of the lid body 7. When ultrasonic vibration is applied in a state where the welding horn H is in contact, the apex of the welding rib 5d and the lower surface 7c of the lid 7 are melted by friction, and the melted ones are solidified integrally. At this time, it is desirable that only the portion to be welded, that is, the apex of the welding rib 5d that is in contact with the lower surface 7c of the lid 7 is in contact. This is why the clearance S is provided between the outer diameter of the lid 7 and the inner diameter of the box 5. That is, if this clearance S is not present, the vibration concentrates on the central portion of the lid body 7 located at an equal distance from the welded portion, and as a result, the central portion of the lid body 7 may be cracked.

Similarly, in order to prevent the vibration of the welding horn H from concentrating on a part, a small R is provided at the edge portion. In addition, since vibration concentrates on the thin part, the change in thickness is prevented as much as possible, and the thickness is almost constant (see FIG. 9).
Further, in this welding process, the rib 7a of the lid body 7 descends while compressing the upper surface 6b of the batting 6. That is, since the upper surface 6b of the batting 6 is compressed by the rib 7a, that is, the peripheral edge of the batting 6 is pressed downward, the peripheral edge is not sandwiched between the welded portions.

A third embodiment for carrying out the present invention will be described with reference to FIG. About the shape of each part of welding, since it is equivalent to the 1st thru | or 2nd Example, the description is abbreviate | omitted.
This is a container in which a bag body 10 containing activated carbon 9 is embedded in a cylindrical body 8. A lid 11 is fixed to the top surface of the cylinder 8 by welding. In addition, a plurality of ribs 8 a are provided at the bottom of the cylinder body 8 to support the lower surface 10 a of the bag body 10. Even if the thickness of the bag body 10 is changed by changing the height of the rib 8a, it is possible to cope with the change. Moreover, the hole 11a is formed in the cover body 11, and the distribution | circulation of the air with the inside and outside of a container is attained.
By the way, unlike the padding and occlusion body, in the bag body whose size is not limited, the built-in substance can be finely crushed and wrapped, but on the contrary, the shape is not stable, so it protrudes from the container or deforms Is likely to occur. Even in this case, the holding of the bag body 10 can be prevented by making the height of the holding rib 11b provided on the lid body 11 higher than the height of the welding rib 8b provided on the cylinder body 8.
Also in this example, the pressing rib 11b of the lid body 11 descends while compressing the upper surface 10b of the bag body 10 in the welding process. That is, since the upper surface 10b of the bag body 10 is compressed by the pressing rib 11b, that is, the peripheral edge portion of the bag body 10 is pressed downward, the peripheral edge portion is not sandwiched between the welded portions.

  Suitable materials for welding include thermoplastic resins such as low density polyethylene, medium density polyethylene, linear low density polyethylene, high density polyethylene, polypropylene, biaxially oriented polypropylene, unstretched polypropylene, stretched nylon, unstretched Nylon, ethylene acetate copolymer, ethylene-vinyl alcohol copolymer resin, polyvinyl chloride, polyvinylidene chloride, polystyrene, acrylonitrile styrene copolymer resin, acrylonitrile butadiene styrene copolymer, cellophane, polyacrylonitrile, ethylene ethyl acrylate copolymer , Acrylonitrile acrylic rubber styrene copolymer resin, acrylonitrile chlorinated polyethylene styrene copolymer, chlorinated polyethylene resin, cellulose acetate resin, fluororesin, polyoxymethylene, poly Amide, polyarylate, thermoplastic polyurethane elastomer, thermoplastic elastomer, liquid crystal polymer, polyether ether ketone resin, polysulfone resin, polyether sulfone resin, polyethylene terephthalate, polycarbonate, polyphenylene ether resin, polyphenylene sulfide resin, polybutadiene resin, polybutylene Examples include terephthalate, polymethyl methacrylate, polymethylpentene, and polyglycolic acid resin.

1 contents

2 Nib 3 Tail plug
3a holding rib 3b upper surface 3c lower surface 4 container 4a step 4b welding rib 4c rib 4d end surface 4e vertical surface 4f slope 4g space 4h outer wall 4i rib height 5 box 5a top surface 5b welding rib 5c cotton rib 6d Lower surface 6b Upper surface 7 Lid 7a Holding rib 7b Upper surface 7c Lower surface
7d hole 8 cylinder 8a rib 9 activated carbon 10 bag 10a bottom surface 10b top surface 11 lid 11a hole 11b holding rib

Claims (2)

The contents are arranged inside the container, and the container is composed of a container body and a lid, and a presser rib is formed on the lid toward the contents, and the presser rib is brought into contact with the contents And forming a welding rib on the lid or the container body, making the height of the welding rib lower than the length of the presser rib, and compressing the content by the presser rib. Placed container. The container which arrange | positioned the content of Claim 1 which made the surface of the content the height which does not exceed the said step part while forming a step part in the inner surface of the said container main body.

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