JP3531004B2 - Foreign matter clogging prevention mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter clogging prevention mechanism which prevents foreign matter in the contents of a container from entering the inside of a suction tube, and more particularly to a space for holding a weight and for passing the contents. A filter action that removes foreign matter in the contents without complicating the structure of the weight holder by providing multiple loop-shaped upright portions surrounding the hole on the inner peripheral surface of the weight holder with holes and holes. The present invention relates to a foreign matter clogging prevention mechanism, which is improved.

In this specification, the word "loop" is used to mean a polygonal shape.

The foreign matter clogging prevention mechanism of the present invention can be used in either an upright state (a state in which the discharge port of the contents is located above) or an inverted state.

The contents discharging mechanism is as follows: When the discharge valve is opened, the contents are discharged into the external space by the action of a compression medium such as a compressed gas which is filled in the packaging container together with the contents in advance. Aerosol method ・ A pressure accumulating method in which the contents inside the packaging container are once taken into the storage space and then released to the external space by the action of the inlet valve on the inlet side of the storage space and the discharge valve on the outlet side. Can be targeted.

As the operation member, .Trigger lever type that rotates during operation .Push button type that moves linearly during operation .Tilt type that tilts during operation And so on.

[0006]

2. Description of the Related Art FIG. 4 is an explanatory view showing a foreign matter clogging preventing mechanism having a single filter acting portion. (A) is sectional drawing of a foreign material clogging prevention mechanism, (b) has shown AA 'sectional drawing of a single filter action part.

In FIG. 4, 30 is a foreign matter clogging prevention mechanism having a single filter action portion, 31 is a suction pipe, 32 is a weight body, 33 is a holder for holding the weight body, 33a is a contents distribution inlet, 33b is an internal space. , 33c is a convex portion for locking the weight body, 33d is a contents passage in which the convex portion 33c is not formed,
33e is a content introducing passage, 33f is an inlet to the suction pipe 31, 33g is a wall that crosses the inlet 33f to the suction pipe, and 33h is a small hole for preventing foreign substances from penetrating the wall 33g ( Single filter acting portion), 33i are suction pipe insertion portions, and 34 is a joint for holding the suction pipe 31 to the holder 33, respectively.

As shown in FIG. 4, a foreign matter clogging prevention mechanism 30
Is a passage 33e for introducing the contents of the holder 33 and an inlet 33 to the suction pipe.
A wall 33g is provided between the wall 33f and f, and a small hole 33h for preventing foreign matter intrusion is formed so as to penetrate the wall 33g. That is,
The foreign matter clogging prevention mechanism 30 is provided with a single filter action portion at the inlet 33f of the suction pipe.

The contents in the container are taken into the suction pipe 31 from the contents distribution inlet 33a through the route of the internal space 33b-the passage 33d-the liquid introduction passage 33e-the small hole 33h-the inlet 33f to the suction pipe. Be done. At this time, the contents are filtered only once by the small holes 33f.

[0010]

As described above, in the conventional foreign matter clogging prevention mechanism, the contents only pass once through the small hole portion which crosses the inlet side of the suction pipe, so that the flow of the contents into the suction pipe is prevented. There is a problem that foreign matter to be prevented, for example, a foreign matter of the same size as or slightly larger than the small hole, passes through the small hole due to flow force or deformation of itself.

Further, since a foreign substance is to be trapped in a planar manner by providing a wall consisting of a small number of holes in a narrow space portion which is an inlet to the suction pipe, the foreign substance is one of the few small holes on this single plane. There was a problem that it blocked all of the above, that is, blocked the passage of contents.

Further, since the weight holder is provided with a dedicated wall for forming a small hole and the small hole is formed therein, the structure of the weight holder itself becomes complicated and there is a problem that the manufacturing is troublesome. .

Therefore, in the present invention, by providing a plurality of upstanding portions for preventing foreign matter intrusion on the inner peripheral surface of the container-shaped weight holder so as to surround the hole for passing contents, The aim is to increase the efficiency of capturing foreign substances and secure a sufficient inflow space for the original contents by increasing the number of three-dimensional and three-dimensional structures, and to simplify the structure of the weight holder.

[0014]

The present invention solves the above problems as follows. (1) A holding portion (for example, a convex portion 13b described later) for holding a weight (for example, a weight 12 described later), and an attachment portion (for example, an insertion portion 13i described later) of a suction pipe (for example, a suction pipe 11 described later). ). A foreign matter clogging prevention mechanism (for example, foreign matter clogging described later) that includes a container-shaped weight holder (for example, holder 13 later described) having a hole for passing contents (for example, inlet 13d to a suction pipe described later) In the prevention mechanism 10), a plurality of upstanding portions (for example, protrusions 13e described below) for preventing foreign matter from coming into contact with the weight are provided on the inner peripheral surface of the weight holder (for example, inner peripheral surface 13a of the holder described below). A foreign matter clogging prevention mechanism, characterized in that a space between adjacent suction pipes is narrower than a minimum inner diameter of the suction pipe, and each of the rising portions is provided in a loop shape surrounding the hole portion. (2) In the above (1), the upright portions are arranged in a plurality of loops. (3) In the above (2), the standing portion is formed from an end portion (for example, an end portion 13f described later) of the inner peripheral surface side thereof to a contact portion (for example, a contact portion 13g described later) with the weight. The length of
It is formed so that the loop-shaped portion farther from the hole portion becomes larger. The foreign matter clogging prevention mechanism according to claim 2, wherein:

According to the present invention, as in the above (1), a plurality of standing portions for preventing foreign matter intrusion are provided in a wide portion of the weight holder, which is the inner peripheral surface, so as to surround the hole for passing contents. Therefore, the number and height of the upright portions can be set as appropriate, thereby expanding the number and size of the action space for preventing foreign matter intrusion to capture foreign matter and secure the original passageway for contents. The reliability of both sides is increasing.

Further, since it is sufficient to provide only the hole for passing the contents and the standing portion for preventing foreign matter intrusion on the inner peripheral surface of the weight holder, the structure of the weight holder is simple and the labor for manufacturing can be saved. .

Further, as described in (2) above, the contents pass through between the plurality of upright portions and are subjected to a plurality of filter actions before reaching the hole portion, so that the first contents are generated by the flow force or the like.
The foreign matter is effectively filtered between the rising portions such that the foreign matter that happens to pass through between the rising portions is also captured between the rising portions thereafter.

Furthermore, since the contents can go from the upstream side to the downstream side toward the hole through a plurality of combined paths between the rising portions of different loop-shaped portions, foreign matter may be present between the rising portions. Even if it is blocked by, the contents are taken into the suction tube through any other combination route.

Further, as in the above (3), the height of the standing portions located on the upstream side of the contents is long, and the space for preventing foreign matter intrusion between the heights of the standing portions is wide in the height direction. , More foreign matter can be efficiently filtered. Further, even when foreign matter is clogged in some of the standing portions, the original contents flow to the discharge port of the hole through the space between the standing portions where the foreign matter is not yet clogged.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. 1 is an explanatory view of a foreign matter clogging prevention mechanism having a multi-filter action portion, FIG. 2 is an explanatory view showing a flow when contents pass through the multi-filter action portion, and FIG. 3 is a foreign matter clogging prevention mechanism having a multi-filter action portion. Explanatory diagram when the is attached to the content discharge mechanism,
Are shown respectively.

In these figures, 10 is a foreign matter clogging prevention mechanism having a multi-filter action portion, 11 is a suction pipe, 11
a is a front end portion, 11b is a rear end portion, 12 is a weight body, 13 is a holder for holding the weight body 12, 13a is an inner peripheral surface of the holder, 13b is a convex portion for holding the weight 12, 13c is a convex portion. An inflow path for contents between them, 13d is an inlet to the suction pipe, 13e is a plurality of concentric projections (multi-filter action parts) centered on the inlet 13d to the suction pipe, and 13f is The inner peripheral surface side end of the protrusion 13e, 13g is the lower end of the protrusion 13e, 13h is a passage for contents between the protrusions 13e, 13i is a suction pipe insertion portion, and 13j is a suction pipe insertion portion. Upper edge portion, 13k is a concave portion formed on the inner peripheral surface of the suction pipe insertion portion, 13m is a holding portion for holding a joint 14 described later, 13n is a small diameter portion for holding the suction pipe 11, 13p is a suction pipe. The stepped portion which receives the tip end portion 11a of the above to secure a passage for contents, 14 is a joint for attaching a weight holder (weight) to the tip end portion 11a side of the suction tube, 14a is a collar portion, 14b Hanging portion, 14c
Is a convex portion that fits into the concave portion 13k of the holder 13, and 14d is a suction pipe 11
Of the taper surface for gripping the tip end 11a side, 20 for the contents discharge mechanism, 21 for horizontally holding the rear end 11b side of the suction tube 11, 21a for the arm part of the housing, and 21b for the arm part. The end portion, 21c is a small diameter portion for holding the suction pipe 11,
Reference numeral d denotes a concave portion that fits with a convex portion 22c of an attachment 22 described later, 22 is an attachment for attaching the suction pipe 11 to the housing 21, 22a is a flange portion, 22b is a hanging portion, and 22c is a concave portion 21d of the arm portion 21a. The fitting convex portion, 22d is the suction pipe 11
Tapered surface for gripping the rear end portion 11b side, 23 is a stem, 23a
Is a hole for discharging the contents, 23b is a contents discharging passage, 24 is a stem rubber, and 25 is a spring for urging the stem.

As shown in FIG. 1, the foreign matter clogging prevention mechanism 10 of the present invention includes: a suction pipe 11; a weight 12; a weight 12; and a projection for preventing foreign matter from entering the inner peripheral surface 13a.
It is composed of a holder 13 in which 13e is formed, and a joint 14 which holds the holder 13 to the suction pipe 11.

The holder 13 is integrally formed with a sheath-shaped suction pipe insertion portion 13i for attaching to the suction pipe 11 via a joint 14, and holds the weight 12 at the lower end of the inner peripheral surface 13a. The convex portion 13b is provided intermittently. Then, the convex portion 13
An inflow path 13c for the contents is formed between the b and the weight 12.

As shown in FIGS. 1 and 2, on the inner peripheral surface 13a of the holder 13, a plurality of protrusions 13e for preventing foreign matter from entering are formed in four concentric circles centering on the inlet 13d to the suction tube. The inlet 13d to the suction pipe is surrounded by the plurality of protrusions 13e.

The plurality of protrusions 13e are: -The intervals are narrower than the minimum inner diameter of the suction pipe 11-The lower end portion 13g abuts the weight 12-The end portion 13f from the inner peripheral surface 13a side to the abutting portion 13g The length is up to the inflow passage 13c side.

The contents are the inlet 13 from the inflow passage 13c to the suction pipe.
By the time it goes to d, it passes through the passage 13h between the plurality of protrusions 13e to be subjected to the multi-filter action.

That is, the protrusion 13 located on the inflow passage 13c side
Foreign matter that happens to have passed through the passage 13h between the e due to the flow force or the like has a plurality of protrusions located on the downstream side.
Since the filter action is repeatedly received between the 13e or between the protrusions 13e and the weight 12, it is more reliably captured and the original contents are efficiently taken into the suction pipe 11.

Further, as shown in FIG.
When the passage 13h between them is blocked, the contents will not be
It can go toward the inlet 13d to the suction pipe through the passage 13h between the 13e and is taken into the suction pipe 11.

Further, as described above, the contents flow into the inflow path 13c.
Since it goes from the space between the projections 13e on the side toward the inlet 13d to the suction pipe, a lot of foreign matter is likely to be clogged between the projections 13e close to the inflow passage 13c, but the inner peripheral surface side of the projection 13e on the inflow passage 13c side The length from the end 13f to the bottom end 13g is the inlet to the suction pipe.
It is longer than that on the 13d side, and is a passage 13 between the protrusions 13e.
Since h is long in the vertical direction, it is a passage that is clogged with foreign matter.
There is still a space in 13h where the contents can pass.

In FIG. 3, the foreign matter clogging prevention mechanism 10 is attached to the contents discharge mechanism 20, and the rear end portion 11 of the suction pipe 11 is shown.
The b side is fitted to the arm portion 21a of the housing 21 via the attachment 22.

As shown in the drawing, the suction pipe 11 is naturally deformed by the weight of the weight 12 and the inflow passage 13c is located in the contents regardless of whether the container (not shown) is upright or inverted. Since the downstream portion 11b of the suction pipe 11 is held horizontally by the arm portion 21a of the housing 21, the suction pipe 11 is not deformed to a small extent when the container is placed upside down, and the contents are bent. Is not difficult to inflow.

In the use mode, when the stem 23 is pressed against the urging force of the spring 25, the hole portion 23a becomes the stem rubber 24.
The contents inside the container are opened from the inside, so that the contents inflow passage 13c-the passage 13h between the protrusions 13e-the inlet to the suction pipe
13d-inside the suction pipe 11-internal space of the housing 21-between the housing 21 and the stem 23-hole 23a-passes through the content discharge passage 23b and is discharged to the external space.

As described above, since the plurality of protrusions 13e are formed in a multi-loop shape surrounding the inlet 13d to the suction pipe, the contents are fed from the inflow passage 13c to the inlet 13d of the suction pipe. In the middle of, the filter action is repeatedly received by the plurality of protrusions 13e. Therefore, the foreign matter is effectively filtered, and it is prevented that the suction pipe 11 is clogged or the operation of the content discharge mechanism 20 is hindered.

In order to assemble the foreign matter clogging prevention mechanism 10 and attach it to the contents discharge mechanism 20, for example, the weight 12 is put into the holder 13 and fitted into the convex portion 13b. Insert the suction pipe 11 from the flange 14a side of the joint 14,
The tip portion 11a is exposed from the hanging portion 14b. The tip portion 11a of the suction pipe 11 to which the joint 14 is attached is brought into contact with the step portion 13p of the holder 13, and the flange portion 14a of the joint 14 is brought into contact with the upper edge portion 13j of the holder 13 using a jig or the like. Push in. The rear end portion 11b of the suction pipe 11 on the side opposite to the holder 13 is inserted from the collar portion 22a side of the attachment 22 and exposed from the hanging portion 22b. The rear end portion 11b of the suction pipe 11 to which the attachment 22 is attached is put into the small diameter portion 21c of the arm portion 21a, and the collar portion 22a of the attachment 22 is moved to the end portion 21b of the arm portion 21a using a jig or the like.
Push it in until it touches.

At this time, the suction pipe 11, the weight 12, the holder 13,
The joint 14 includes: -the protrusion 13b of the holder 13 locks the weight 12; -the holding portion 13m of the holder 13 sandwiches the hanging portion 14b of the joint 14 and the protrusion 14c of the joint 14 holds the holder 13;
Into the concave portion 13k of the, and the taper surface 14d of the joint 14 grips the suction pipe 11 and integrates it.

Further, the suction pipe 11 is attached to the housing 21 in such a manner that the projection 22c of the attachment 22 and the recess 21d of the arm portion 21a are fitted to each other to be gripped by the tapered surface 22d of the attachment 22.

[0037]

As described above, according to the present invention, a plurality of upright portions for preventing foreign matter intrusion are provided in a wide portion of the weight holder, which is the inner peripheral surface, so as to surround the hole for passing the contents. The number of standing parts and the height of each part can be set as appropriate, which expands the number and size of the action space for preventing foreign matter intrusion to capture foreign matter and ensure the passage of the original contents. You can improve your sex.

Further, since it is necessary to provide only the hole for passing the contents and the standing portion for preventing foreign matter from entering on the inner peripheral surface of the weight holder, the structure of the weight holder is simple and the labor for manufacturing is saved. be able to.

Further, since the contents pass through between the plurality of upright portions and are subjected to a plurality of filter actions before reaching the hole, they pass through between the first upright portions due to flow force or the like. The foreign matter can be effectively filtered between the rising portions so that the foreign matter is also captured between the rising portions, and the original contents can be efficiently taken into the suction pipe.

Furthermore, since the content goes from the upstream side to the downstream side toward the hole through a plurality of paths between the rising portions of different loop-shaped portions, some of the rising portions are blocked by foreign matter. If so, the contents can flow into the suction pipe through any other path.

Further, the height of the standing portion located on the upstream side of the contents is long, and the space for preventing foreign matter intrusion between the heights of the rising portions is wide in the height direction, so that more foreign matter can be efficiently transferred. Can be filtered. Furthermore, even when foreign matter is clogged in some of the standing portions, the original contents can flow into the discharge port of the hole through the space between the standing portions where the foreign matter is not yet clogged. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a foreign matter clogging prevention mechanism having a multi-filter action portion according to the present invention.

FIG. 2 is an explanatory diagram showing the flow of the contents when the contents pass through the multi-filter action part according to the present invention.

FIG. 3 is an explanatory diagram when the foreign matter clogging prevention mechanism having the multi-filter action portion of the present invention is attached to the content discharge mechanism.

FIG. 4 is an explanatory view showing a conventional foreign matter clogging prevention mechanism having a single filter action portion.

[Explanation of symbols]

10: Foreign material clogging prevention mechanism 11: Suction tube 11a: Tip part 11b: Rear end part 12: Weight body 13: Holder 13a: Inner peripheral surface 13b: Convex part 13c: Content inflow path 13d: To suction tube Inlet 13e: Plural projections (multi-filter acting part) 13f: Tip part 13g: Bottom part 13h: Content passage 13i: Suction tube insertion part 13j: Upper edge part 13k: Recessed part 13m: Clamping part 13n: Small diameter Part 13o: Step 14: Joint 14a: Collar 14b: Hanging part 14c: Convex part 14d: Tapered surface 20: Contents discharging mechanism 21: Housing 21a: Arm part 21b: End part 21c of arm part: Small diameter part 21d: Recessed part 22: Attachment 22a: Collar part 22b: Hanging part 22c: Convex part 22d: Tapered surface 23: Stem 23a: Hole for discharging contents 23b: Contents discharge path 24: Stem rubber 25: Spring for urging stem 30: foreign material clogging prevention mechanism 31: suction pipe 32: weight main body 33: holder 33a: contents distribution inlet 33b: internal space 33c: convex portion 33d: contents passage 33e: contents introduction passage 33f: Inlet to suction pipe 33g: Wall 33h: Small hole for preventing foreign substances from entering (single filter action part) 33i: Suction pipe insertion part 34: Joint

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Claims (3)

(57) [Claims] 1. A foreign matter clogging prevention mechanism comprising a container-shaped weight holder having a holding portion for holding a weight and a hole for passing contents to the attachment portion of the suction pipe, the inside of the weight holder. A plurality of standing portions for preventing foreign matter from coming into contact with the weight are provided on the circumferential surface, and the distance between the standing portions is smaller than the minimum inner diameter of the suction pipe, and each of the standing portions surrounds the hole. The foreign matter clogging prevention mechanism, which is provided so as to have a shape. 2. The foreign matter clogging prevention mechanism according to claim 1, wherein the upright portions are arranged in a plurality of loops. 3. The upright portion is formed such that a length from an end portion on the inner peripheral surface side of the upright portion to a contact portion with the weight becomes larger as a loop-shaped portion farther from the hole portion. The foreign matter clogging prevention mechanism according to claim 2, wherein