JPH0628459Y2 - Puckkin - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a packing to be fitted into a lid of a container, and more specifically, it is easy and reliable to fit into the lid and does not fall off from the lid. The present invention relates to a packing having excellent airtightness when the lid is closed.

[Conventional technology]

Generally, in a container for storing liquid or the like, in order to prevent leakage of the content liquid or the like, a packing is fitted in the lid to completely seal the lid when the lid is closed. Sandwich packing (Japanese Utility Model Publication No. 56-20367),
A packing supporting projection is provided on the inner peripheral surface of the lid, and the packing is engaged with the projection so as not to fall off and fitted into the lid (Japanese Utility Model Publication 57-11464).

[Problems to be solved by the invention]

However, in the method of sandwiching the packing between the upper lid and the lower lid, the lower lid must be attached, so the assembly is troublesome, and a packing support ridge is provided on the inner peripheral surface of the lid so that the packing does not fall off with this ridge. Although the packing is easy to insert and hang, the packing may fall off when the diameter of the lid or packing is uneven or the packing is fatigued. It's difficult to wear.

[Means for solving problems]

The present invention has been made in view of the above circumstances, and a ridge that engages with a packing supporting ridge provided on the inner peripheral surface of the lid is provided on the peripheral end surface of the packing substrate, and an elastic ring is provided on the peripheral end portion of the packing substrate. By providing a fitting groove and further providing a cut groove in the center of the lower bottom of the elastic ring fitting groove, and fitting the elastic ring in this fitting groove, it can be easily and surely fitted in the lid, It is designed so that it will not fall off from the lid due to fatigue or the like, and that the sealing at the time of closing the lid can be performed well.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a container for containing a liquid, 2 is a container port which is erected at the upper end of the center of the container 1, the container port 2 is provided with a thread 3 on the outer peripheral surface, and an inner plug 4 is fitted on the upper end. ing.

Reference numeral 5 denotes an inner lid which is fitted into the container opening 2. The screw 6 provided on the inner peripheral surface is screwed to the thread 3 on the outer peripheral surface of the container opening 2 and screwed to the container opening 2. Reference numeral 7 is an outer lid fitted to the inner lid 5.

Reference numeral 8 denotes a packing for sealing the opening of the container port 2. A ridge 10 is provided on the peripheral end surface of the packing substrate 9, and the ridge 10 is used as a packing support projection 11 provided on the inner peripheral surface of the upper end portion of the inner lid 5. It is engaged and fitted to the inner lid 5. Reference numeral 12 denotes an elastic ring fitting groove that is circumferentially provided on the upper surface of the thick wall portion on the circumferential side of the packing substrate 9, and the thickness of the outer peripheral wall 13 forming the fitting groove 12 is set to the inner peripheral wall 1
The thickness is smaller than that of No. 4, and the outer peripheral wall 13 is further provided with notches 15 at predetermined intervals as shown in FIG. Further, a cut groove 16 is further provided at the center of the lower bottom of the fitting groove 12 so that the outer peripheral wall 13 can more easily swing, and the elastic ring 17 is fitted in the fitting groove 12.
Reference numeral 18 denotes a ridge that is circumferentially provided on the lower surface of the thick wall portion on the peripheral side of the packing substrate 9 for sealing the container port 2.

As described above, the packing 8 is provided with the elastic ring fitting groove 12 on the upper surface of the peripheral side end thick portion of the packing substrate 9, and the outer peripheral wall 13 forming the fitting groove 12 is made thinner than the inner peripheral wall 14 to have an outer circumference. Since the notch 15 is provided in the wall 13 and the notch 16 is further provided at the center of the lower bottom of the fitting groove 12 to facilitate swinging, the protrusion 10 on the peripheral end face of the packing substrate is provided inside the inner lid 5. It can be easily pushed into the packing supporting ridges 11 on the peripheral surface and can be easily fitted to the inner lid 5. Further, after the fitting, the outer peripheral wall 13 is pushed toward the center by the inner circumferential surface of the inner lid 5 and, at the same time, is pushed outward by the elastic ring 17 fitted in the fitting groove 12, so that the packing is fatigued. It does not fall off from the lid 5 without it. Further, since the outer peripheral wall 13 is pressed outward by the outward force of the elastic ring 17, the protrusion 10 on the peripheral end face of the packing substrate is
Is securely and safely engaged with the packing support ridge 11 on the inner peripheral surface of the inner lid 5. Therefore, the packing 8 can maintain good airtightness when the lid is closed without coming off from the inner lid 5, and in particular, since the elastic ring 17 is fitted in the fitting groove 12, a positioning container or the like can be obtained. In this case, the sealing effect is not reduced due to the dimensional variation in the fixed position, and the sealing performance is kept good.

FIG. 3 shows another embodiment of such a packing. This packing 8a has an elastic ring fitting groove 12 provided circumferentially on the lower surface side of the peripheral edge thick portion of the packing substrate 9. The packing 8 is constructed in the same manner as the packing 8 shown in FIGS. 1 and 2 except that the elastic ring 17 is fitted in the fitting groove 12. In addition to having the same effect as the packing 8 of the above-described embodiment, the packing 8a further improves the sealing effect because the elastic ring 17 directly contacts the inner plug 4 fitted to the upper end of the container opening 2. Further, the elastic ring 17 is provided on the outer peripheral wall 1.
Since it is always pressed inward by 3, it does not fall from the fitting groove 12.

In addition, in each of the above-described embodiments, an example in which a thick portion is formed at the peripheral side end of the packing substrate has been described, but the present invention is not limited to this, and a thick packing substrate may be used as a whole. In this case, since the whole is thick, it is not necessary to make the peripheral side edge thick, and when forming the elastic ring fitting groove on the peripheral side edge of the packing board, it is natural that the outer side wall is thinner than the inner side wall thickness. Becomes thinner. Further, the outer wall forming the fitting groove is also provided with cutouts at predetermined intervals to facilitate swinging, but since the outer wall can swing even without these cutouts,
The outer wall does not necessarily have to be cut at predetermined intervals.

[Action]

The packing of the present invention is constructed as described above. When the packing board 9 is pressed into the inner lid 5, the outer peripheral wall 13 forming the ring fitting groove 12 is swung inward. hand,
The ridge 10 on the peripheral end surface of the packing substrate is pushed into the packing support ridge 11 on the inner peripheral surface of the inner lid 5 and fitted. After the fitting, the outer peripheral wall 13 is pushed toward the center by the inner circumferential surface of the inner lid 5, and at the same time, the outer ring 13 is pushed outward by the elastic ring 17 fitted in the fitting groove 12, so that the packing is fatigued. The outer peripheral wall 13 is pushed outward by the outward force of the elastic ring 17 so that the protrusion 10 on the peripheral end face of the packing substrate can be securely and safely connected to the protrusion 11 on the inner peripheral face of the inner lid 5. They are engaged with each other, and the container port 2 is closed with good airtightness.

[Effect of device]

As described above, according to the present invention, the peripheral edge surface of the packing substrate that closes the container opening is provided with the ridge that engages with the packing supporting ridge provided on the inner peripheral surface of the lid, and An elastic ring fitting groove is provided around the end, a cutting groove is further provided in the center of the lower bottom of the elastic ring fitting groove, and the elastic ring is fitted into this fitting groove. By pressing the outer peripheral wall of the packing to the inside, the ridges on the peripheral edge surface of the packing substrate can be easily engaged with the packing support ridges on the inner peripheral surface of the inner lid, and can be easily fitted into the inner lid. can do. After fitting, the outer peripheral wall is pushed toward the center by the inner peripheral surface of the inner lid, and at the same time, it is pushed outward by the elastic ring fitted in the fitting groove, so that the packing is held without fatigue. , Furthermore, since the elastic ring exerts an outward force, the easily swinging outer peripheral wall is pushed outward,
The ridges on the peripheral end surface of the packing substrate are securely and safely engaged with the ridges for supporting the packing on the inner peripheral surface of the inner lid, and the packing does not drop off from the inner lid, and good sealing performance is maintained when the lid is closed. . In particular, since the packing has the elastic ring fitted in the fitting groove, there is no reduction in the sealing effect due to dimensional variation at a fixed position in the positioning container or the like, and good sealing performance is maintained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a half sectional front view of a main part showing an embodiment of a container having a packing according to the present invention, and FIG. 2 is a partial sectional exploded perspective view of the packing. FIG. 7 is a front view of a partial cross section of the essential part of another embodiment of the container to which the packing according to the present invention is attached. 1 ... Container, 2 ... Container mouth, 5 ... Inner lid (lid), 8, 8
a ... packing, 9 ... packing substrate, 10 ... ridge,
11 ... packing support ridge, 12 ... fitting groove, 16 ...
Cut groove, 17 ... Elastic ring.

Claims (1)

[Scope of utility model registration request] 1. A packing fitted in a lid of a container, wherein a peripheral edge surface of a packing substrate that closes an opening of the container is provided with a ridge that engages with a packing supporting ridge provided on an inner peripheral surface of the lid, A packing in which an elastic ring fitting groove is provided around the peripheral edge of the packing board, a cutting groove is further provided in the center of the lower bottom of the elastic ring fitting groove, and the elastic ring is fitted into this fitting groove.