JP6473403B2 - Foreign matter intrusion prevention method and blocking material - Google Patents

Description

  The present invention closes and protects the inside of a hole provided in an article so that foreign matter such as paint at the time of painting, screws or cutting chips at the time of attachment to the main body of the article or during processing does not enter. It is related with the obstruction | occlusion material used in order to do.

Conventionally, in order to prevent foreign matter such as paint, screws, cutting scraps, etc. from entering the hole of the article, means for closing the hole with a closing material made of any material such as synthetic resin, wood, metal, etc. has been adopted. (For example, see Patent Documents 1 and 2).
Moreover, there exists what was made into the shape fitted to the hole which the said article | item has as said obstruction | occlusion material. However, a blocking material having a shape that fits into a hole tends to be difficult to fit into the hole and to be removed from the hole. Therefore, as the blocking material, for example, those disclosed in Patent Document 3 to Patent Document 10 have been proposed.

JP2012-250220A JP 2012-250221 A JP-A-7-308613 Japanese Patent Laid-Open No. 10-34043 JP-A-2005-007278 JP 2007-044634 A JP 2009-0666516 JP 2009-0666518 JP 2009-072655 A JP2013-43104A

  However, the above-described conventional closing material having a shape that fits into the hole has a problem in that the handle and knobs must be molded or attached, and the manufacturing is complicated.

As a means for solving the above-mentioned conventional problems, the present invention provides a pair of left and right finger insertion slits from the front side to the back side of a block main body made of synthetic resin foam, and the block main body is to be closed. The closure material 10 having a shape that fits in the hole is provided.
The synthetic resin foam is preferably a thermosetting resin foam, and the rebound resilience (JIS K 6400-3) of the synthetic resin foam is preferably set to 55% or less.

[Action]
The synthetic resin foam that is the material of the block body 1 is an elastic body. Therefore engineers, for example, two fingers, such as the thumb and forefinger can be plugged in a pair of left and right finger pouch slits 2,3 of the block body 1.
Engineers is that this way the clogging member 10 can easily be closed by fitted in the hole 2A of the article 1A is supported by two fingers.
After the article 1A is painted or processed, two fingers are again inserted into the finger insertion slits 2 and 3 of the closing material 10, and the closing material 10 is pulled out from the hole 2A of the article 1A. Can be easily done.
Thus, when the article 1A is painted, attached, or processed, it is possible to reliably prevent foreign matter from entering the hole 2A of the article 1A.
Synthetic resin foam constituting the sealing member 10 is, if it is a thermosetting resin foam, the occluder 10 has a preferred elastic, finger pouch slits 2,3 of the occluder 10 engineers finger It is easy to insert the finger into the finger, and the inserted finger is securely held in the finger inserting slits 2 and 3. Further, the closing member 10 is securely held in the hole 2A of the inserted article 1A by elasticity.
However, if the elasticity is too high, it is difficult to smoothly insert and pull out the closing material 10 into the hole 2A of the article 1A. The rebound resilience (JIS K 6400-3) is 55% or less.

〔effect〕
In the present invention, the closing material can be easily and reliably inserted into the hole 2A of the target article 1A and can be pulled out from the hole 2A. For example, foreign matter can be reliably prevented from entering the hole 2A of the article 1A.

The perspective view of a blocking material and a target article. Explanatory drawing in the case of inserting a blocking material into the hole of a target article. The perspective view of the state which inserted the obstruction | occlusion material in the hole of the target article.

  If this invention is demonstrated by one Example shown in FIGS. 1-3, the hole 2A of the predetermined | prescribed depth will be provided in the front of 1 A of object articles | goods. The hole 2A of the target article 1A is a hole to be closed. When the target article 1A is to be painted, processed, assembled (attached), etc., paint, screws, nuts, pins, cutting scraps are placed in the hole 2A. In order to prevent foreign matter such as dust from entering, it is blocked by the closing material 10 having a shape that fits in the hole 2A.

The closing material 10 includes a block main body 1 made of a synthetic resin foam and a pair of left and right finger insertion slits 2 and 3 provided from the front to the back of the block main body 1.
The finger insertion slits 2 and 3 are formed by notches formed in the block body 1 and are normally closed in a linear shape (see FIG. 1). For this reason, in the closing material 10, in the normal state in which the finger insertion slits 2 and 3 are closed, foreign matters and the like enter the block main body 1 from the front surface to the back surface through the finger insertion slits 2 and 3. It is prevented.
The finger insertion slits 2 and 3 are made of a synthetic resin foam as the block main body 1, and therefore elastically deform when the fingers are inserted into the finger insertion slits 2 and 3. (See FIG. 2). Even in such a case, since fingers are inserted into the finger insertion slits 2 and 3, foreign matter or the like can be prevented from entering from the front surface to the back surface of the block body 1 through the finger insertion slits 2 and 3. Has been.
When the finger is removed from the finger insertion slits 2 and 3, the finger insertion slits 2 and 3 are closed by returning to the original linear shape, and the finger insertion slits 2 and 3 pass through the finger insertion slits 2 and 3. The entry of foreign matter or the like from the front side to the back side of the block body 1 is prevented (see FIG. 3).

Examples of the synthetic resin foam as the material of the block body 1 include thermoplastic resin foams such as polyethylene, polypropylene, and polystyrene, and thermosetting resin foams such as polyurethane, urea resin, melamine resin, and phenol resin. Although it is used, it is desirable to use a thermosetting resin foam in terms of having elasticity.
In order to enable a finger to be smoothly inserted into the finger insertion slits 2 and 3 and to be smoothly inserted into and extracted from the hole 2A to be closed, the resilience of the synthetic resin foam ( JIS K 6400-3) is desirably set to 55% or less.

As shown in FIG. 2, the closing material 10 supports two closing fingers 10 by inserting _two fingers, for example, a thumb F ₁ and an index finger F ₂ into the finger insertion slits 2 and 3, respectively, as shown in FIG. Thus, the hole 2A is closed by the closing material 10 by being inserted into the hole 2A of the target article 1A.
Then, after painting, processing, assembling (attaching), etc. to the article 1A, the two fingers F ₁ and F ₂ are inserted into the finger insertion slits 2 and 3 of the closing material 10 again, and the closing material 10 is attached. Pull out from the hole 2A.
The hole 2A of the target article 1A prevents intrusion of foreign matters such as paint, screws, nuts, pins, cutting waste, dust, etc. by the closing material 10 during painting, processing, assembly (attachment) and the like.

Note that the closing material 10 need not necessarily have the same shape as the hole 2A as long as it has a shape that fits in the hole 2A.
That is, a synthetic resin foam is used as the material of the block body 1 of the closing material 10, and the synthetic resin foam can be elastically deformed. Even if it is not the same shape, it can be inserted into the hole 2A by elastic deformation. However, the shape of the blocking material 10 is greatly different from the shape of the hole 2A. More specifically, the outer shape of the blocking material 10 is the hole 2A when viewed from the outside of the hole 2A (the side where the blocking material 10 is inserted). In the case where the shape is greatly different from the inner peripheral shape, even if the closing material 10 can be fitted into the hole 2A, a gap is formed between the closing material 10 and the hole 2A when viewed from the outside of the hole 2A. The foreign matter enters the hole 2A from the gap.
That is, in the above-mentioned closing material 10, the shape that fits properly in the hole 2A is a shape that can be inserted into the hole 2A, and the outside of the hole 2A with the closing material 10 inserted into the hole 2A. This is a shape in which no gap is formed between the blocking material 10 and the hole 2A as viewed from the side (inserting the closing material 10).

  In the present invention, when painting or processing an article, foreign matter such as paint, screws, nuts, pins, cutting waste, dust and the like are reliably prevented from entering the hole of the article, so that it can be used industrially. It is.

1 block body 1A target object 2A holes 2,3 finger pouch slit 10 occluder _F 1, _{F 2} fingers

Claims (3)

A foreign matter intrusion prevention method for preventing foreign matter from entering into a hole provided in an article ,
A step of inserting a closing material into the hole and closing the hole;
It said occluder includes a block body which is shaped to Tekihama in said hole a synthetic resin foam as a material, in the block body has a pair of left and right finger pouch slit provided toward the back side from the front the synthetic resin foam, the foreign matter intrusion prevention wherein the impact resilience (JIS K 6400-3) is set to 55% or less. The foreign material intrusion prevention method according to claim 1, wherein the synthetic resin foam is a thermosetting resin foam. A blocking material used in the foreign matter intrusion prevention method according to claim 1 or 2.

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