JPH0330016Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention relates to the structure of a lid tip that serves as a lid to cover the mouth of a heat-insulating container such as a portable metal thermos flask, and is also used as a tip. .

"Prior Art" FIGS. 13 to 15 show an example of a conventionally used lid tip. This device consists of a top body 1, a cover 2 attached to the outer circumference of the top body 1, and a cap 3 fixed to the top surface of the top body 1.

The lid tip main body 1 of this lid tip is made of synthetic resin and has a substantially cylindrical shape, and both ends are open. The cover 2 is made of metal and has a substantially cylindrical shape, and its upper end portion is bent radially inward to form a bent portion 4 . The cap 3 is made of synthetic resin and has a substantially disk shape, and an annular rib 5 is provided on the outer peripheral edge of the lower surface thereof. Further, a welding rib 6 is provided inside the annular rib 5.

This lid cap is made by ultrasonically welding the cap 3 to the upper surface of the cap main body 1 using the welding rib 6, and connecting the bent portion 4 of the cover 2 to the outer peripheral edge 1a of the upper surface of the cap main body 1 and the annular rib of the cap 3. The cover 2 fitted to the tip body 1 is fixed by being held by the lower surface 5a of the tip 5. Further, the opening at the top of the top body 1 of this lid cup is closed with a cap 3 which is welded to the top, thereby giving it the function of a top. Incidentally, a screw 7 is formed on the inner circumferential surface of the lower part of the top body 1 for attaching the lid top to a portable thermos flask.

``Problems to be Solved by the Invention'' In such a conventional lid tip, the bent portion 4 formed at one end of the cover 2 is connected to the annular rib 5 of the cap 3 and the outer periphery of the upper surface of the tip body 1. As shown in FIG. 15, due to the difference in height between the cover 2 and the tip body 1 and the difference in linear expansion, the cover receiving protrusion 8 of the tip body 1 is clamped and fixed by the tip portion 1a. A gap A is likely to occur between the cover and the lower edge 9 of the cover. For this reason, with such conventional lid tips, when cleaning the lid tip, etc.
Water entered the space B between the cover 2 and the tip body 1 through the gap A, resulting in an unfavorable hygienic inconvenience.

In addition, in the case of this lid tip, unless the welding rib 6 of the cap 3 is securely ultrasonically welded to the tip body 1, the bent portion 4 of the cover 2 cannot be firmly clamped, and the play of the cover 2 will be reduced. Occur. Furthermore, if the bent portion 4 of the cover 2 is warped or has burrs, the welding rib 6 of the cap 3 will not reach the upper surface of the cap body 1 sufficiently, resulting in insufficient welding between the cap body 1 and the cap 3. For this reason, conventional lid tips have had the problem of severe requirements for processing accuracy and welding accuracy for components such as the cover 2.

``Means for Solving the Problems'' Therefore, in the lid tip of the present invention, a cover receiving protrusion is provided on the outer peripheral surface of the opening side of the tip body over the entire circumference to receive one end edge of the cover. ,
A pressed portion bent inward in the radial direction of the cover is provided at the other end of the cover disposed on the bottom side of the tip body so as to form a slight gap between it and the bottom of the tip body. Then, a cover is engaged with the outer periphery of the tip body, and a pressing portion provided on the lower surface of the cap presses the inner peripheral edge of the pressed portion of the cover to cause elastic deformation, thereby fixing the cap to the tip body. We have attempted to solve the above problems.

"Operation" In the lid cup of the present invention, the pressed part of the cover is pressed so as to be elastically deformed by the pressing part of the cap, so that the cover comes into close contact with the cover receiving protrusion of the cup body. energized and fixed.

``Example'' Hereinafter, the lid tip of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of the lid tip of the present invention, and reference numeral 10 in the figure is the tip body. A cover 11 is attached to the outer periphery of this tip body 10. Further, a cap 12 is attached to the outer surface of the bottom portion 13 of the cap body 10.

The tip main body 10 is made of synthetic resin and has a substantially cylindrical shape with a bottom. This tip body 1
A cover receiving convex strip 14 that protrudes outward is formed along the entire circumference of the outer peripheral edge of the opening 10a. This cover receiving protrusion 14 is a cover 11
It receives the lower end portion 11b of. In the lid tip of this example, the cover receiving protrusion 14 has a substantially L-shaped cross section, and forms a cover engagement groove 15 that opens on the bottom side of the tip body 10.

At the periphery of the bottom 13 of this tip body 10,
An annular protrusion 16 is provided. This annular protrusion 16 is formed on the outer surface side of the bottom portion 13 (the upper side in FIG.
This direction is hereinafter referred to as upward). A portion of the bottom portion 13 of the tip body 10 surrounded by the annular protrusion 16 is formed deeper than the peripheral portion. In addition, the outer peripheral wall portion 17 of this tip body 10
is formed so as to be inclined upwardly and gradually inward in the radial direction of the tip body 1.

The cover 11 has a substantially cylindrical shape and is made of an elastically deformable material such as a metal material such as stainless steel. Lower edge 11b of this cover 11
is fitted into the cover engagement groove 15 of the tip main body 10 and is brought into contact with the cover receiving protrusion 14. Further, a pressed portion 18 is formed at the upper end portion of the cover 11, which is located on the bottom portion 13 side of the tip body 10. This pressed portion 18 is formed to be bent inward in the radial direction of the cover 11 from the straight portion 11a of the cover 11. Moreover, this pressed part 18 is located at a position slightly above the bottom outer surface of the tip main body 10.
It is formed substantially parallel to the bottom part 13 of the tip body 10. A slight gap 19 is formed between the pressed portion 18 and the bottom portion 13 of the tip body 10 so that the pressed portion 18 can be deformed downward. Further, the width of the pressed portion 18 is formed to such a size that it can be elastically deformed downward with a predetermined force when pressed by a pressing portion 20 of the cap 12, which will be described later. The inner diameter of this pressed portion 18 is formed to a size that fits into the annular protrusion 16 of the tip main body 10.

The cap 12 is located at the bottom 1 of the cap body 10.
3. It is fixed to the outside surface, and has a mark such as the product name of the thermos flask on it, and also functions as a decorative board. This cap 12 is made of a synthetic resin material and has a substantially disk shape. This cap 12
A pressing portion 20 is provided on a surface 12a (hereinafter abbreviated as the lower surface) facing the tip body 10. This pressing portion 20 is a portion that presses the pressed portion 18 of the cover 11 so as to be deformed downward, and fixes the cover 11 to the tip body 10 by the pressing force. The pressing portion 20 in this example is annular and is formed to protrude downward. This pressing portion 20 is formed by the annular protrusion 1 of the tip main body 10.
6 and the pressed part 1 of the cover 11
It is provided at a position that presses the inner peripheral edge side of 8.
This pressing portion 20 is formed lower than the annular protrusion 16 of the tip main body 10. This pressing part 2
0 and the annular protrusion 16 of the tip main body 10 is larger than the thickness of the pressed portion 18 of the cover 11, and this pressing portion 20 presses the pressed portion 18 of the cover 11. The dimensions are set such that a slight gap 19 remains between the bottom part 13 of the tip body 10 and the bottom part 13 when doing so. Furthermore, reinforcing ribs 21 are provided on the outer peripheral edge of the cap 12 in this example so as to protrude downward.

In the lid cap having such a structure, the pressed portion 18 of the cover 11 is pressed so as to be deformed downward by the pressing portion 20 of the cap 12, and the lower edge of the cover 11 is pressed by the urging force. 11b is pressed against the cover receiving protrusion 14 of the tip body 10, thereby fixing the cover 11 to the tip body 10. As a result, the pressed portion 18 of the cover 11 comes into close contact with the pressing portion 20 of the cap 12, and the lower edge 11b of the cover 11 comes into close contact with the cover receiving protrusion 14 of the top body 10. A space B between the main body 10 and the cover 11 is watertightly partitioned from the outside. Therefore, the lid tip of the present invention does not allow water to enter the space B between the tip body 10 and the cover 11 even during cleaning, making it sanitary. Also,
Since the cover 11 is fixed by pressing the pressed part 18 of the cover 11 with the pressing part 20 of the cap 12, it is possible to avoid errors in the melting margin when welding the cap 12 to the cap body 10 and the pressure of the cover 11. Part 1
Dimensional errors due to warpage, burrs, etc. of the tip 8 or differences in height between the tip body 10 and the cover 11 can be absorbed by elastic deformation of the pressed portion 18 of the cover 11. Therefore, regarding the lid tip of the present invention,
Not only can the cover 11 be securely fixed easily, but also water can be surely prevented from entering the space B between the tip body 10 and the cover 11.

"Other Embodiments" Figures 4 to 12 show other embodiments of the lid tip of the present invention, and the same components as in the above embodiments are given the same reference numerals to simplify the explanation. do.

4 to 6 show a second embodiment of the lid tip of the present invention. The lid tip main body 10 of the lid tip in this example has a diameter slightly expanded radially outward at the opening 10a side, and the cover receiving protrusion 14 has a rectangular cross-sectional shape. The bottom part 13 of the cap body 10 has a cap engagement groove 2.
2 is formed in a ring shape. A welding rib 23 provided on the cap 12 is ultrasonically or rotationally welded to the cap engaging groove 22.
A pressing portion 20 is formed on the outer periphery of the welding rib 23 and projects radially outward in the shape of a brim.

The pressed portion 18 of the cover 11 in this example is formed wider than that in the first embodiment. The welding rib 23 of the cap 12 is fitted into the inner periphery of the pressed portion 18, and the cover 11
The inner peripheral edge of the cap 12 is pressed by a pressing portion 20 of the cap 12.

Even with the lid tip of this example, the same effects as those of the above embodiment can be obtained.

7 to 9 show a third embodiment of the lid tip of the present invention.

In the cap main body 10 of the lid cap in this example, a ring-shaped cap locking rib 24 is provided upright on the outer periphery of the bottom portion 13. As shown in FIG. 8, a recess 25 is formed on the outer peripheral surface of the rib 24, and the outer peripheral edge of the upper end is chamfered. The cap 12 in this example is provided with a pressing portion 20 projecting downward on its outer peripheral edge.
A locking protrusion 26 having a semicircular cross-section and locking into the recess 25 of the cap locking rib 24 is provided on the inner surface of the pressing portion 20. This pressing part 20
The outer diameter of the straight portion 11 a of the cover 11 is smaller than the inner diameter of the straight portion 11 a of the cover 11 , and the pressing portion 20 presses the inner circumferential edge of the pressed portion 18 of the cover 11 .

The lid cap of this example not only provides the same effects as those of the above embodiment, but also has the advantage that it can be easily assembled by simply fitting the cap 12 into the lid cap body 10.

10 to 12 show a fourth embodiment of the lid tip of the present invention.

In the lid tip of this example, the inner peripheral edge of the pressed portion 18 of the cover 11 is bent upward to form a clamped portion 27 . The held portion 27 is held between the outer circumferential surface of the annular protrusion 16 of the cap body 10 and the inner circumferential surface of the pressing portion 20 of the cap 12.

Even with the lid tip of this example, the same effects as those of the above embodiment can be obtained, and the cover 11
Since the positioning portion 27 is in plane contact with the annular protrusion 16 of the tip body 10 and the pressing portion 20 of the cap 12, the impact applied to this portion when the lid tip is dropped is alleviated, and the cover 11 Misalignment and falling off can be more reliably prevented.

Note that the lid tip of the present invention is not limited to the above embodiment. For example, the portion to be pressed by the pressing portion 20 of the cap 12 may be on the inner periphery side of the outer periphery of the cover 2, and is not limited to the inner periphery of the pressed portion 18, but may be in the middle of the pressed portion 18 in the width direction. Of course, it is also possible to do something like this.

"Effects of the Invention" As explained above, the lid tip of the present invention is provided with a cover receiving convex strip on the outer peripheral surface of the opening side of the tip body over the entire circumference for receiving one end edge of the cover.
A pressed portion bent inward in the radial direction of the cover is provided at the other end of the cover disposed on the bottom side of the tip body so as to form a slight gap between it and the bottom of the tip body, The cap is fixed to the tip body by engaging the cover with the outer periphery of the tip body, and pressing the inner peripheral edge of the pressed portion of the cover with the pressing portion provided on the underside of the cap to cause elastic deformation. The pressing portion is in close contact with the pressing portion of the cap, and the lower edge of the cover is in close contact with the cover receiving protrusion of the tip body, so that the space between the tip body and the cover is partitioned off from the outside in a watertight manner. Therefore, the lid tip of the present invention does not allow water to enter between the tip body and the cover during cleaning, etc., and water does not remain in the gap during this time, making it sanitary. . In addition, regarding the lid tip of this invention,
Even if there is deformation such as warping or burrs on the pressed part of the cover, there is an error in the melting margin when welding the cap to the cap body, or there is an error in the height dimension between the cap body and the cover. However, these errors and deformations are absorbed by the elastic deformation of the cover. Therefore, the cover can be securely fixed even if large tolerances are allowed for assembly of each component and the cap and the cap body. Therefore, the cap tip of the present invention can be used even if there are variations or errors in the welding conditions between the tip main body and the cap cap, or even if the precision of each component is low.
It can be assembled reliably, the dimensions of each part can be controlled, and the assembly of each part is easy.
In addition, water is definitely prevented from entering between the tip body and the cover, resulting in excellent hygiene.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a first embodiment of the tip of the present invention, Fig. 2 is an enlarged sectional view of section C of the same embodiment, and Fig. 3 is an enlarged sectional view of section D of the same embodiment. 4 is a sectional view showing a second embodiment of the tip of the present invention, FIG. 5 is an enlarged sectional view of section E of the same embodiment, and FIG. 6 is a section F of the same embodiment. FIG. 7 is an enlarged sectional view showing the third embodiment of the tip of the present invention, FIG. 8 is an enlarged sectional view showing the G section of the same embodiment, and FIG. FIG. 10 is a cross-sectional view showing the fourth embodiment of the tip of the present invention; FIG. 11 is an enlarged cross-sectional view showing the I part of the same embodiment; FIG. The figure shows J of the same example.
FIG. 13 is a sectional view showing a conventional lid tip; FIG. 14 is an enlarged sectional view of the K portion of a conventional lid tip; FIG. 15 is a conventional lid tip. FIG. 10...Cop body, 10a...Opening, 11
...Cover, 11b ... Lower edge, 12 ... Cap, 13 ... Bottom, 14 ... Cover receiving protrusion, 1
8...Pressed part, 19...Panel, 20...Pressed part.

Claims (1)

[Claims for Utility Model Registration] A bottomed cylindrical synthetic resin cup body, a cylindrical metal cover fitted around the outer periphery of the cup body, and a plate-shaped synthetic resin attached to the outer surface of the bottom of the cup body. In a lid cap consisting of a resin cap, a cover receiving convex strip is provided on the outer peripheral surface of the opening side of the cap body around the entire circumference to receive one end edge of the cover, and a cover receiving protrusion is provided on the bottom side of the cap body of the cover. A pressed part bent inward in the radial direction of the cover is provided at the other end of the cover so as to form a slight gap with the bottom of the tip body, and the cover is attached to the outer periphery of the tip body. A lid cap characterized in that the cap is fixed to the cap main body by engaging the cap and pressing the inner circumferential edge of the pressed portion of the cover by a pressing portion provided on the lower surface of the cap to cause elastic deformation.