JPS584476Y2 - Tobacco filter for pipe use - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tobacco filter that is novel and can also be used as a pipe and has great industrial applicability.

Recently, a disposable cigarette filter that doubles as a pipe has been developed, which forms a detour to guide cigarette smoke and prevents tar from cigarette smoke passing through the detour from adhering to the inner peripheral wall of the detour and is separated. However, this type of filter has the disadvantage that tar must be efficiently removed by combining the shapes and structures of each part in the extremely narrow cavity due to its nature, and it is also cheap as a disposable item. The current requirement that the product be manufactured and sold in the United States makes it more difficult to realize a structure that efficiently separates the tar component.

The present invention completely solves the problems of conventional products through a clever combination of a new main body and inserter, and thereby easily eliminates smoke damage.
The purpose is to remove it reliably and inexpensively, thereby responding to today's social demands.

Next, the configuration of the present invention will be specifically explained with reference to the drawings showing one embodiment.

1 is the main body of the filter of the present invention, which includes a straight pipe passage 2
The diameter of the tip of the reduced-diameter mouthpiece 3 is enlarged to form a tobacco insertion part 4, and the straight pipe-shaped passage 2 is formed into a tobacco insertion part 4.
The inner cylindrical portion 5 extending into the cavity is formed so as to protrude into the cavity of the tobacco insertion portion 4, and is preferably integrally molded from synthetic resin.

Reference numeral 6 denotes an inserter, and I denotes a rod constituting a main part of the inserter 6, which is inserted into the straight pipe passage 2 through the tobacco insertion part 4, and thus It is assumed that an annular gap 8 is formed between the inner circumferential wall and the inner circumferential wall.

In this case, it is desirable that the rod body 7 and the straight pipe-shaped passage 2 be configured so that the annular cavity 8 is as long and narrow as possible.

Reference numeral 9 denotes a bottomed cylindrical portion constituting another essential part of the inserter 6, which is connected to the end of the rod 1.1, and as shown in FIG. When inserted, it shall be configured to accommodate an inner cylindrical portion 5 which defines the end of the straight tube-shaped passageway 2.1 and which projects into the tobacco insert 4 cavity.

10 . . . 10 is a plurality of bulges formed on the outer circumferential surface of the bottomed cylindrical portion 9 at equal intervals in the axial direction, so as to fit tightly into the inner circumferential surface of the tobacco insertion portion 4. shall be formed.

Reference numeral 11 denotes a stepped portion formed on the inner circumferential surface of the connecting portion between the reduced diameter mouthpiece 3 and the enlarged cigarette insertion portion 4;
, and the free end of the rod 7 is gradually advanced toward the suction port 21 of the straight pipe passage 2.
The bulge 1 in the inserter 6 moving to the left in the figure
0...10 slides to the left on the inner circumferential surface of the cigarette insertion part 4 due to the above-mentioned structure, and at the position where its tip part is locked to the stepped part 11. That is, in the position shown in FIG. 4, the inserter 6 is fixed and installed within the main body 1.

In this case, the inner diameter of the opening end of the tobacco insertion part 4 is of course the same as the diameter of the cigarette, but the tobacco insertion part 4 is
As shown in FIG. 4, if the diameter is gradually reduced in the direction of the diameter-reducing suction port 3 in a tapered cross-sectional shape, the bulging portion 10 of the inserter 6...
10 and the inner circumferential surface of the cigarette insertion part 4 gradually increase the degree of adhesion as the inserter 6 is inserted, which makes the insertion of the inserter 6 easy and reliable, which is extremely effective.

As for the material of the inserter 6, it is preferable that it is made of synthetic resin and integrally molded like the main body 1, but the bulge part 10 as described above...
...The purpose of the present invention can be more fully achieved by forming the structure from a synthetic resin having elasticity.

In the filter of the present invention, the outer peripheral surface of the bottomed cylindrical portion 9 of the inserter 6 and the cigarette insertion portion 4 of the main body 1 are combined with the above configuration.
A plurality of narrow dispersion gaps 12 are arranged between the inner peripheral surface and the plurality of bulges 10 at equal intervals.
. . . 12 is formed, and the cigarette smoke is dispersed into the dispersion gap 12 . . . as shown by the arrow in Fig. 4.
As a result, it is suddenly and evenly distributed and attracted to 12,
Tar particles are extremely effectively prevented from adhering to and separating from the outer circumferential surface of the bottomed cylindrical portion 9, the inner circumferential surface of the tobacco insertion portion 4, and the side walls of the bulging portions 10.

In this case, if the bottom of the bottomed cylindrical portion 9 of the inserter 6 is formed into a truncated conical shape as shown in FIGS. The tapered part 92 of the truncated conical part not only causes tar to adhere to the apical flat part 91 of the cigarette smoke but also prevents the tobacco smoke from entering the annular cavity 1.
2...12 is carried out smoothly, which is extremely effective.

Next, in the filter of the present invention, the inner circumferential wall of the bottomed cylindrical portion 9 of the inserter 6, the bottomed cylindrical portion 9
The above-mentioned dispersion gap 12... A bent passage portion 13 is formed which communicates with the inner circumferential surface of the bottomed cylindrical portion 9 of the inserter 6, the outer circumferential surface of the rod body 7 of the inserter 6, and the main body 1.
From the tip of the inner cylindrical part 5, the bending passage part 13
A curved passage section 14 is formed which communicates with the fourth section, and therefore, the smoke purified by the dispersion gap section 12...12 is transferred to the fourth section.
As shown by the arrows in the figure, these bent passage portions 13 and curved passage portions 14
In the process of rapidly bending and reversing the bending passage section 1,
3. Tar is extremely effectively and thoroughly prevented from adhering to and separating from the narrow peripheral wall surrounding the curved passage section 14;
The effect is quite remarkable.

In the filter of the present invention, the tobacco smoke that has undergone the stepwise purification effect as described above is formed between the inner circumferential surface of the straight pipe-shaped passage 2 and the outer circumferential surface of the rod 7, which communicates with the curved passage part 14. The water flows into the aforementioned long and narrow annular cavity 8, undergoes a final purification action, and then flows into the user's daytime.

In this case, as shown in FIG. 4, if a stepped portion 15 is formed near the base end of the straight pipe-shaped passage 2, the purification effect will be further promoted.

In addition to the purifying effect as described above, the filter of the present invention only requires that the main body 1 and the inserter 6 are integrally molded from synthetic resin, and that the inserter 6 is press-fitted into the main body 1.
The production cost is extremely low, and since it is small enough to fit in the palm of your hand, it can meet the demands of users as a tobacco filter that can also be used as a pipe.In both respects, it has great industrial applicability. , which responds immediately to today's national and social demands.

[Brief explanation of drawings]

The drawings all show one embodiment of the filter of the present invention, in which Fig. 1 is an overall perspective view, Fig. 2 is a perspective view of the inserter, and Fig. 3 is a front view seen from direction A in Fig. 1. Figure, 4th
The figure is a cross-sectional view taken along line AA in FIG. 3. In the drawing, 1 is the main body, 2 is a straight pipe passage, 3 is a reduced diameter suction port,
4 is a tobacco insertion part, 5 is an internal cylindrical part, 6 is an inserter, 7 is a rod, 8 is a dispersion cavity part, 9 is a bottomed cylindrical part, 10...
. . 10 is a bulging portion, 12 . . . 12 is a dispersion gap portion, 13 is a bent passage portion, and 14 is a curved passage portion.

Claims (1)

[Scope of utility model registration request] 1. The tip of the reduced-diameter mouthpiece 3 having a straight pipe-shaped passage 2 is expanded in diameter to form a tobacco insertion part 4, and the straight-tube-shaped passage 2 is
a main body 1 having an internal cylindrical portion 5 projecting into the cigarette insert portion 4 cavity, and a straight pipe passageway 2 through the tobacco insert portion 4; A bottomed cylindrical part 9 into which the internal cylindrical part 5 is inserted is connected to the end of the rod 7, which is inserted and forms an annular cavity 8 with the inner circumferential wall of the straight pipe type passage FNr2, and A plurality of bulges 10 are formed at equal intervals in the axial direction on the outer circumferential surface of the cylindrical portion 9 to fit tightly into the inner circumferential surface of the tobacco inserting portion 4. A plurality of dispersion cavities 12 between the circumferential surface and the outer circumferential surface of the bottomed cylindrical portion 9 and the dispersion void portions 12...
- A tobacco filter that doubles as a pipe, comprising an inserter 6 that creates a bent passage section 13 and a recurved passage section 14 that are interposed and communicated between the annular cavity section 12 and the annular cavity section 8. 2. The pipe-cum-tobacco filter according to claim 1, wherein the tobacco insertion part 4 gradually reduces its diameter in a cross-sectional tapered shape in the direction of the diameter-reducing mouthpiece 3. 3. The pipe-cum-tobacco filter according to claim 11, wherein the bottom of the bottomed cylindrical portion 9 has a truncated conical shape.