JP4024781B2 - Dust remover - Google Patents

Description

  The present invention relates to a dust remover that removes dust and the like adhering to the surfaces of various members such as a polarizing plate and a light diffusion film during an assembly process of a liquid crystal panel or the like.

In recent years, liquid crystal panels have become popular in place of CRT television monitors. Despite being working in a clean environment at the parts assembly site of each manufacturer that manufactures the LCD panel, various materials (for example, polarizing plates, light guide plates, various films, the backlight itself, etc.) A great deal of effort was spent on collecting the remaining garbage. Above all, the difficulty of removing the dust scattered in the four corners of the liquid crystal panel and places where the product is difficult to reach was not very common. Conventionally, as one of means for removing the dust at the four corners and spot dust, the adhesive rubber is shaped like a pencil with an eraser, and the eraser side of the pencil is widely used as an adhesive rubber. .
This means that the dust attached to the product is removed by attaching it to the adhesive rubber, and the attached dust is attached to a transfer rubber plate having a stronger adhesive force than the separately prepared adhesive rubber to remove the dust. The work is repeated. This adhesive rubber portion is attached to a removable base, and is connected to the main body by screws, so that it can be exchanged (see FIG. 7).
In addition, an adhesive rubber is inserted into a portion corresponding to the pencil core empty portion provided in the mechanical pencil-shaped main body, and a gap portion is provided at the upper portion of the main body so as to form a gap in the upper portion of the adhesive rubber. There is a pencil-type dust remover (see, for example, Patent Document 1) in which a weight is inserted into the gap portion so as to freely move up and down.
JP 2002-177910 A (see paragraphs of claims, paragraphs {0010}, {0015} to {0020} in the column of examples, see FIGS. 1 to 3)

However, in each of the above prior arts, the function as a removing tool is satisfied by connecting an adhesive rubber part for adsorbing and removing dust and a separately prepared grip part using some connecting tool. However, if such a product structure is connected using various types of parts, a dust chamber is always created at the connecting portion regardless of the connecting method. In particular, when tightening and fixing using screws, screw powder is always generated. That is, although it is a dust removal tool for the purpose of dust removal, if its own dust is generated, the purpose of use will be hindered.
Accordingly, the present invention aims to eliminate dust generation from the dust removing tool itself.
In addition, a wide range of commonly used adhesive rubber dust removing tools have many troubles that the adhesive rubber is torn off during operation from the connecting portion between the adhesive rubber, which is a dust removing portion, and the grip portion. In addition, there are more cases where the use is not possible due to a trouble that falls off the life of the rubber.
In addition, the sudden loss of the soft adhesive rubber part may lead to an accident in which the tip of the hard grip part scratches an important surface to be cleaned and loses the commercial value.
In addition, the disadvantage of the dust removal tool that applies the adhesive strength of adhesive rubber is that it is accompanied by the generation of static electricity at the moment it is separated from the surface to be cleaned after it is pressed against the surface to be cleaned and dust is adsorbed to the surface of the adhesive rubber. That is.
In particular, when the surface to be cleaned is an insulator, it is accompanied by a peeling charge of several thousand volts, and there is a risk of causing electrostatic breakdown of precision electronic parts such as ICs and semiconductors.
Therefore, in view of such circumstances, the present invention eliminates the dust storage part of the dust removing tool itself and eliminates dust generation by itself and can safely perform the dust removing work. And it aims at providing the dust removal tool which reduces electrostatic breakdown at the time of use so that it can be used for a long period of time.

The first invention of the present invention for solving the above-mentioned problems eliminates the connecting tool between the adhesive rubber main body and the gripping part as the main action part for dust removal as described in claim 1, and collects dust and dust. This is a dust remover that eliminates all of the following.
A cylindrical, prismatic, or flat adhesive rubber body is formed with a tip that is suitable for the shape of the surface to be cleaned and the shape of the removed object, the tip is soft, and the other grip is non-adhesive. It is an integral part that eliminates the connection parts between the adhesive rubber at the tip and other grips at all .

A second invention of the present invention for solving the above-mentioned problems is a dust removing tool as described in claim 2, and is as follows.
A cylindrical, prismatic or flat conductive rubber adhesive body is formed with a tip that is suitable for the shape of the surface to be cleaned and the shape of the removed object. The tip part is soft and sticky, the grip part is non-tacky, and is integrally formed so as to eliminate the connection parts between the sticky rubber at the tip and the other grip part at all .

Since the dust removing tool according to the present invention has the configuration as described above, the following effects can be obtained.
(1) Since it is an integrally formed type that does not provide a separate connecting member between the tip of the adhesive rubber body that is the main working part and the grip part that performs the operation, it is possible to prevent dust accumulation and dust generation, and a dust remover Satisfies the basic condition of "Do not put out trash yourself". That is, it can be said that it is a dust-free dust removing tool.
(2) Integrated from the adhesive rubber part that adsorbs dust at the tip to the grip part in a single material, for example, urethane rubber alone, the tip part being soft and sticky, and the grip part being non-sticky and hard This eliminates the need for connecting parts and has a great economic effect.
(3) Since it is a dust remover that integrally forms the tip part softly and the grip part rigidly, various shapes that match the purpose of use can be easily created by changing the shape of the adhesive rubber part at the tip. For example, a pencil type is used to remove spot dust scattered on the flat surface of a liquid crystal module, and a spatula type is used to remove dust on the sides such as the gap between the frame and the glass surface. Removal work is possible.
(4) The boundary between the adhesive rubber part at the tip and the grip part acts as a cushion at the time of use due to the influence of the rubber hardness gradient. It becomes. All commercially available adhesive rubber dust removers have a soft adhesive rubber at the tip, and the soft rubber is connected to the hard grip part. In many cases, the adhesive rubber itself is torn off more than the life of the adhesive rubber itself. If a soft sticky rubber is attached to the tip of a hard stick and the soft sticky rubber at the tip is pressed against a flat surface to remove dust, the hard stick will naturally remain and the soft sticky rubber will tear off. On the other hand, in the present invention, a hardness gradient is formed in the adhesive rubber body, the adhesive rubber portion at the tip is integrally formed so as to have a rubber hardness of 30 °, and the grip portion has a rubber hardness of 90 °. The boundary portion between the adhesive rubber for removing dust and the grip portion has a hardness gradient from a hardness of 30 ° to a hardness of 90 °. Therefore, the boundary part becomes harder than the tip part but softer than the grip part and becomes a better elastic body, and even if the operator's force is too strong, the trouble that only the adhesive rubber is torn off is extremely reduced, so the long life is achieved. Can be achieved.
(5) When made of a conductive rubber material, it reduces the generation of static electricity associated with dust removal work and efficiently removes the remaining charge, preventing reattachment of dust, thus further improving cleanliness. Can be planned.

  The tip of the cylindrical rubber, prismatic or flat conductive adhesive rubber body is formed in a shape suitable for the shape of the surface to be cleaned and the shape of the removed object. Is a dust remover integrally formed with non-adhesive hard while maintaining conductive performance.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
First, the structure of the dust removing tool will be described.
A first embodiment of the present invention will be described with reference to FIG. 1. Polyurethane rubber, butyl rubber, silicon, which is made conductive by adding a conductive material to an adhesive rubber made by polymerization or copolymerization of an unsaturated compound. A pressure-sensitive adhesive rubber body 2 formed in a flat shape with rubber (the one shown in FIG. 1 is a spatula-shaped one formed in a flat plate shape), and one end in the longitudinal direction thereof is formed into a sharp blade-like angle. The tip portion 3 having an acute angle is formed in a soft state other than the tip portion, in particular, the portion that becomes the grip portion 4 is formed in a non-adhesive hard state, and the tip adhesive rubber and grip portion used in the meantime By eliminating the connection parts of the unit, it eliminates dust generation. That is, from the dust adsorbing part at the tip to the grip part, only a single material, for example, urethane rubber, is used to keep the rubber removal part at the tip to be sticky, while the grip part is non-sticky without stickiness and deforms even if force is applied It is formed integrally with the hardness that does not. In addition, by maintaining the conductivity of the entire removal tool, it is possible to prevent electrostatic damage due to static electricity and reattachment of dust, and it is possible to easily remove dust at narrow and corners. A flat plate is formed, a sharp edge of a blade shape is formed at the end in the longitudinal direction, and an appropriate width is obtained in a direction orthogonal to the end (the width is particularly good for gripping, and at the corner The width is selected so that the dust can be efficiently removed).

  As described above, the shape of the adhesive rubber main body 2 has been described in which a sharp edge is formed at one end of the soft state. However, the other end in the hard state of the adhesive rubber main body 2 is also provided with a blade-shaped acute angle inclined portion. By forming it, it is possible to scrape off the hard, sharp-angled spatula against the dust that has adhered to the glass surface of liquid crystal panels etc. by using this sharp-angled spatula. Is another ingenuity.

  Next, the second embodiment will be described with reference to FIG. 2. The first embodiment shown in FIG. 1 is a spatula-shaped adhesive rubber body 2 formed in a flat plate shape and has a blade-like shape at one end in the longitudinal direction. The tip portion 3 that forms an acute angle and has a blade-like sharp angle is made soft, and the other portions except the tip portion 3, particularly the portion that becomes the grip portion 4, are formed in a non-adhesive hard state and adhesive. Integrated molding that eliminates any connecting parts between the rubber tip and the grip. Further, in contrast to the adhesive rubber body 2 which has conductivity as a whole, the second embodiment is changed to a flat plate-like spatula shape, and is formed into a cylindrical shape. Instead of a spatula shape, a hemispherical shape and a pencil shape are used, and the other configurations are the same as the flat plate-like spatula-shaped dust removing tool of the first embodiment, so that detailed description is omitted.

Next, the adhesive rubber body 2 having conductivity will be described in more detail.
The main part of the adhesive rubber body 2 having conductivity is mainly composed of urethane rubber, silicon rubber, or butyl rubber, and the adhesive force is in inverse proportion to the finished hardness. In addition, the adhesive agent is not contained.

Here, based on FIG. 3, FIG. 4, one Example regarding the manufacturing method of the spatula-shaped adhesive rubber main body which consists of flat form is demonstrated.
As can be understood from FIGS. 3 and 4, the molding die 5 has a blade-shaped acute angle at one end in the longitudinal direction as shown in FIG. A mold having a flat spatula shape so as to be the grip portion 4 is provided with a rubber raw material inlet 6 and an air vent 7. First, as shown in FIG. 3 (b), when forming the sharp edge of the tip 3 of the adhesive rubber main body 2, the die is inclined by approximately 45 degrees, and the tip 3 is formed in the mold in this state. When a soft rubber raw material having a set hardness of approximately 30 ° required for injection is injected from the rubber raw material injection port 6 and the soft adhesive rubber corresponding to the tip 3 is cured to some extent, the mold is inserted as shown in FIG. An amount of hard rubber material having a hardness of about 90 ° corresponding to the gripping portion is returned from the rubber material injection port 6 so that the soft rubber injected earlier and the hard rubber injected later are integrated. At this time, since the joining portion of the soft rubber and the hard rubber is joined with an inclined surface parallel to the spatula shape formed at the sharp edge of the tip 3, the joining area is widened so that it is more integrated. Is certain. The spatula-shaped dust removing tool formed in this way is removed by adhering dust to a soft adhesive rubber using the surface where the sharp edge of the tip 3 is formed with respect to the surface 8 to be cleaned as shown in FIG. To do.

Moreover, the manufacturing method of a cylindrical adhesive rubber main body is demonstrated based on FIG.
First, as shown in FIG. 5A, the molding die 9 is a die having a hemispherical tip and a cylindrical grip portion, and is provided with a rubber raw material inlet 10 and an air vent 11. Then, as shown in FIG. 5 (b), a set amount of soft rubber raw material having a hardness of about 30 ° necessary for forming the tip hemispherical portion of the mold is injected from the rubber raw material injection port 10, and then FIG. As shown in (c), a rubber raw material having a hardness of about 60 ° is injected from the rubber raw material injection port 10, and thereafter, a hard rubber raw material having a hardness of about 90 ° is supplied from the rubber raw material injection port 10 as shown in FIG. Injecting and integrating, one example of forming a hardness gradient from 30 ° to 90 ° hardness. By increasing the number of layers, a smoother hardness gradient can be formed. Although it is slow and not efficient, it has a connecting function for integrating a soft rubber having a hardness of about 30 ° at the tip portion, and a rubber material having a hardness of about 40 ° to 50 °, 60 ° to 70 ° in the middle, and A method of sequentially injecting hard rubber materials with a hardness of approximately 90 ° and integrating them may be used. Needless to say. The pencil-type dust removing tool formed in this way removes dust by attaching it to a soft adhesive rubber using the spherical surface of the hemispherical tip 3 with respect to the surface 8 to be cleaned as shown in FIG. .

  The amount of the rubber material to be injected and the timing of injecting the rubber material having different hardnesses are variously designed depending on the rubber material.

  That is, with respect to the grip portion 4 excluding the tip portion 3, the degree of polymerization is increased so that it is easy to grip, thereby increasing the hardness and simultaneously decreasing the adhesive strength. That is, the dust adheres only at the tip 3 but easily peels off from the medium (for example, tape, sheet, polarizing plate, glass plate) to which the dust adheres, and the rubber component does not migrate to the medium. Thus, the adjustment of the adhesive force is a point for maintaining the function of the adhesive rubber body 2 having conductivity.

In addition, most of the commercially available adhesive rubbers are those that have been added with a pigment so as to exhibit light blue, light green, light gray, etc. so that the adhesion of dust can be easily confirmed. However, on the other hand, the presence of the pigment is not preferable, and there is a view that an additive-free transparent one is better.
However, the grip part does not directly contact the surface to be cleaned, so it looks better when colored by adding pigment.

  Not only can it be used to remove dust attached to LCD panels and precision equipment, but it can also be used to clean electrical equipment in general households. It can also be used as a suction transfer tool for films and lightweight articles that are sucked at the tip of the adhesive rubber body and moved to another point.

It is a perspective view which shows the spatula type dust removal tool which is the 1st Example of this invention. It is a perspective view which shows the pencil type dust removal tool which is the 2nd Example of this invention. It is explanatory drawing explaining one manufacturing method for manufacturing the spatula type dust removal tool in 1st Example of this invention. It is a front view which shows the use condition of the spatula type dust removal tool in 1st Example of this invention. It is explanatory drawing explaining one manufacturing method for manufacturing the pencil type dust removal tool in the 2nd Example of this invention. It is a front view which shows the use condition of the hemispherical pencil type dust removal tool in 2nd Example of this invention. It is a perspective view which shows the conventional dust removal tool.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Dust removal tool 2 ... Adhesive rubber body 3 ... Tip part 4 ... Grip part 5 ... Molding die 6 ... Vulcanized rubber raw material inlet 7 ··· Air vent 8 ··· Surface to be cleaned 9 ··· Mold 10 ··· Vulcanized rubber material inlet 11 · · · Air vent

Claims (2)

A cylindrical, prismatic, or flat adhesive rubber body is formed with a tip that is suitable for the shape of the surface to be cleaned and the shape of the removed object, the tip is soft, and the other grip is non-adhesive. The dust remover is characterized in that it is integrally formed to eliminate any connecting parts between the adhesive rubber at the tip and the other gripping part at all . The tip of the cylindrical rubber, prismatic or flat conductive adhesive rubber body is formed in a shape suitable for the shape of the surface to be cleaned and the shape of the removed object. Is a dust remover characterized in that it is formed integrally with non-adhesive hard and completely eliminates the connecting parts between the adhesive rubber at the tip and other gripping parts while maintaining the conductive performance.

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