JP2018034102A - Masking material fixing tool, masking kit, and masking method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a masking material fixing tool which is easy to handle and user-friendly, and provide a masking kit and a masking method.SOLUTION: A masking material fixing tool 10 fixes masking materials 23A, 23B to a metallic and magnetic masking object 20, and includes a columnar magnetically-attracting part 11 with a magnet 13 incorporated, and a bridge part 12 extended from the magnetically-attracting part 11. An attraction part 14 which enables attraction by magnetic force is arranged on one end of the magnetically-attracting part 11. A press part 15 which enables pressing of the masking materials 23A, 23B to the masking object 20 is arranged on a tip end part of the bridge part 12.SELECTED DRAWING: Figure 1

Description

  The present invention is, for example, a masking material fixing tool for fixing a masking material that protects a masking object from paint or scratches when painting or assembling parts such as a vehicle such as an automobile, a building such as a house, an aircraft, or a ship, The present invention relates to a masking kit and a masking method for protecting the masking object.

When painting a vehicle such as an automobile, a building such as a house, an aircraft, a ship, etc. (hereinafter abbreviated as “automobile”, etc.) or assembling parts, the desired location of the masking object is masked, Suppresses adhesion of paint and scratches caused by parts. In general, a masking sheet or a masking adhesive tape has been used as a masking material for the masking. That is, masking is performed by covering the desired portion of the masking object with the sheet and then fixing the sheet with an adhesive tape. However, the masking material has problems that the masking operation becomes complicated and that it is economically inferior because it is disposable.
Conventionally, in order to solve such problems, there has been provided a masking material obtained by using a sheet material made of a thermoplastic resin as a material and formed into a shape suitable for a masking location by vacuum / pressure forming (for example, Patent Document 1 to Patent Reference 4). The masking material has a convex fitting portion, and is configured to be fixed by fitting the fitting portion to the periphery of the masking location. However, the masking material is difficult to form a convex fitting portion by vacuum / pressure forming using a mold, and the mold tends to be complicated. In addition, depending on the masking part, there is a part where the fitting part cannot be fitted or a part where the fitting part cannot be formed.
On the other hand, as a masking material formed into a shape suitable for a masking location, a material using a magnet for fixing to the masking location has been proposed. For example, the masking material disclosed in Patent Document 5 has a magnet attached to the masking material, and is configured substantially integrally with the magnet. The masking material disclosed in Patent Document 6 and Patent Document 7 fixes the masking material by applying a magnet separate from the masking material from above the masking material in contact with the masking location. . The masking material to be fixed to the masking location using such a magnet does not necessarily need to form the fitting portion, and if it is made of a magnetic material such as iron that can be adsorbed by a magnet such as an automobile, It has the advantage that it can be fixed without choosing a place.

JP-A-8-24734 JP-A-9-2285750 JP-A-10-2285750 JP2013-240740A Japanese Unexamined Patent Publication No. 2015-10075 JP-A-8-24773 JP 2004-33973 A

However, in the above-described prior art, the masking material that is substantially integrated with the magnet of Patent Document 5 performs the work because the magnet is attracted to an undesired location during the operation related to the mounting to the masking location. It is often disturbed. Further, such adsorption of the magnet to an undesired portion may cause a masking failure because the masking material cannot cover the masking portion suitably. That is, the masking material that is substantially integrated with the magnet has a problem that it is difficult to handle.
On the other hand, the masking material in which the magnets of Patent Document 6 and Patent Document 7 are configured separately is a masking material that is substantially integrated with the above-mentioned magnet because the magnet can be aimed at a desired location. Easy to handle compared to the material. However, in order to securely fix the magnet to the masking location in the masking material, it is preferable to use a magnet having a high magnetic force to increase the attractive force to the masking location. In addition, it is preferable to use a magnet having a large size to increase the contact area with the masking material so that the masking material is suitably pressed against the masking portion. Here, in the case of the above-described configuration, the strong magnet attracting force acts on the entire contact surface with the masking material, and generally the magnet attracting force increases in proportion to the contact area with the object. For this reason, when a magnet having a high magnetic force and a large size is used for fixing the masking material, there is a high possibility that the attracting force of the magnet becomes excessively strong. If the magnet's attractive force is excessively strong, it will be difficult to remove the magnet from the masking location after painting or assembling the parts, and the masking material pressed by the excessive attractive force will be removed at the periphery of the magnet. It tends to rise from the masking area and cause masking defects. Therefore, in order to use the magnet as it is for fixing the masking material without any ingenuity, there is a high possibility that the attractive force becomes excessively strong and the usability is poor.
The present invention has been made paying attention to such problems existing in the prior art. The object is to provide a masking material fixture, a masking kit, and a masking method that are easy to handle and easy to use.

As a means for solving the above-mentioned conventional problems, the invention of the masking material fixture according to claim 1 is a masking material fixing device for fixing a masking material to a metal masking object having magnetism. A magnet-incorporated columnar magnetized portion and a bridge portion extending from the magnetized portion, and an attracting portion is provided at one end of the magnetized portion to enable attraction by magnetic force. The gist of the invention is that a pressing portion that enables the masking material to be pressed against the masking object is provided at the tip of the bridge portion.
According to a second aspect of the present invention, in the invention of the masking material fixture according to the first aspect, a plurality of the bridge portions are provided so as to form a radial shape centering on the magnetized portion. The gist of the present invention is that each of the pressing portions is provided at a distal end portion of the bridge portion, and a finger hook portion including a gap is provided between the plurality of bridge portions.
A third aspect of the present invention is the masking material fixture according to the first or second aspect of the present invention, wherein the magnet is separated from one end of the magnetized portion where the attracting portion is provided. The gist is that the magnetized part is internally provided.
According to a fourth aspect of the present invention, in the invention of the masking material fixture according to any one of the first to third aspects, the bridge portion extends laterally from the other end of the magnetized portion. The gist of the present invention is that it is extended and inclined toward the one end of the magnetized part as it goes toward the pressing part at the tip.
The invention of the masking kit according to claim 5 is a predetermined capable of covering the surface of the masking material fixture according to any one of claims 1 to 4 and a metal masking object made of magnetism. The gist is that the masking material is formed into a shape.
The invention of the masking method according to claim 6 is a masking method using the masking material fixture according to any one of claims 1 to 4, wherein the masking object is masked on the surface of the masking object. After covering the material, the masking material fixing tool is arranged so that the pressing portion is positioned at the periphery of the masking material, and the masking object is attracted to the masking object via the masking material. Fixing the masking material to the masking object by sandwiching the masking material between the object and the magnetized part and pressing the masking material against the masking object by the pressing part Is the gist.

[Action]
The masking material fixture of the present invention is for fixing the masking material to the masking object, and is configured separately from the masking material, so that it aims at a desired location on the masking material. It is easy to handle. Further, the masking material fixture is provided with an adsorption portion that allows the masking material fixture to be attracted to a masking object by a magnetic force at one end of a magnetized portion in which a magnet is installed. Apart from the part, a pressing part for pressing the masking material against the masking object is provided at the end of the bridge part extending from the magnetized part. That is, the masking material fixture of the present invention is configured by separating the suction portion that enables suction by magnetic force and the pressing portion that presses the masking material. For this reason, it is not necessary to increase the size of the magnet in order to press the masking material against the object to be masked, and the magnet to be used may have an attractive force that can be easily removed from the masking location after work. It is possible to suppress the magnet's attracting force from becoming excessively strong, and it is easy to use (Claim 1).
In addition, a plurality of the bridge portions provided with the pressing portion are provided, and a masking target of the masking material fixing tool is provided by placing a finger on the finger-hanging portion by providing a finger-holding portion including a gap between the plurality of bridge portions. Attachment to and removal from an object can be suitably performed (Claim 2).
Further, in the masking material fixture, since the magnet is housed in the magnetized portion at a position away from the attracting surface, generally the magnet attracting force is inversely proportional to the square of the distance to the target. The attracting force of the magnet can be moderately suppressed, and the masking material fixture can be suitably removed from the object to be masked (Claim 3).
In addition, by extending the bridge portion in the lateral direction from the other end portion of the magnetized portion, the shape is inclined toward the one end portion side of the magnetized portion toward the pressing portion at the tip. Since it is possible to provide a space between the bridge portion and the masking material, it is easy to place a finger on the bridge portion by using the space, and the masking material fixing tool is preferably removed. (Claim 4).
The masking kit of the present invention is composed of the above-described masking material fixture and a masking material formed in a predetermined shape capable of covering the surface of a magnetic metal masking object, and is easy to handle and easy to use. (Claim 5).
The masking method of the present invention is performed by covering the masking object on the surface of the masking object and then fixing the masking material to the masking object with the masking material fixture. As described above, since the masking material fixture is easy to handle and easy to use, the work related to masking can be easily performed.

〔effect〕
According to the present invention, it is possible to provide a masking material fixture that is easy to handle and easy to use, and can provide a masking kit and a masking method that are easy to handle and easy to use.

(A) which shows the masking material fixing tool of embodiment is a front view, (b) is a rear view, (c) is a side view, (d) is sectional drawing in the DD line of Fig.1 (a). The perspective view which shows the state which covers the masking material of embodiment on a masking target object. (A) which shows the state which fixed the masking material with the masking material fixing tool, (b) is the fragmentary sectional view seen from the side. (A) which shows the masking material fixing tool of another form, (b) is a rear view, (c) is a side view, (d) is sectional drawing in the DD line | wire of Fig.4 (a), (e ) Is a sectional view showing a state in which a masking material is fixed. (A), (b), (c) is a front view which shows the masking material fixing tool of another form.

Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.
As shown in FIGS. 1A to 1D, the masking material fixture 10 of this embodiment (hereinafter also referred to as “fixer 10” for short) includes a magnetized portion 11 and a bridge portion 12. I have.
The magnetized part 11 is formed in a hollow column shape, and a magnet 13 is housed therein. One end (the rear end in FIGS. 1 (a) and 1 (c) and the left end in FIGS. 1 (c) and 1 (d)) of the magnetized portion 11 is open to the outside, and the inside of the opening The magnet 13 is exposed. That is, the magnetized portion 11 is provided with an attracting portion 14 that opens at one end toward the outside and enables the magnet 13 to attract the magnet 13 by allowing the magnet 13 to act on the outside. It has been.
In the attracting part 14, the magnet 13 is housed in the magnetized part 11 at a position away from one end of the magnetized part 11. Thus, one end surface of the magnet 13 (left end surface in FIGS. 1C and 1D) and one end surface of the magnetized portion 11 (left end surface in FIGS. 1C and 1D) A gap 14A is provided between the two. The gap 14 </ b> A prevents the magnet 13 from coming into direct contact with the surface of the masking material when the masking material to be described later is fixed by the fixture 10. That is, when the magnet 13 is in direct contact with the surface of the masking material, the attracting force by the magnet 13 is exerted at a substantially maximum value on the masking object located in the immediate vicinity of the back surface of the masking material, and the fixing The tool 10 becomes difficult to remove. Therefore, the gap 14A suitably suppresses the attractive force of the magnet 13 by providing a slight distance between the masking target and the magnet 13.

The bridge 12 extends from the other end of the magnetized part 11 (the front end in FIGS. 1A and 1C and the right end in FIGS. 1C and 1D). It is formed in a plate shape. A pressing portion 15 is provided at the distal end portion of the bridge portion 12 so as to protrude to the back side of the fixture 10. The pressing portion 15 is formed so that the back surface (the left end surface in FIGS. 1C and 1D) that is in contact with the surface of a masking material described later has a flat shape. The pressing portion 15 is configured to press the masking material against the masking object by bringing the flat back surface into contact with the surface of the masking material.
In the fixing device 10, a plurality (three in the present embodiment) of the bridge portions 12 are provided at equal intervals so as to form a radial shape with the magnetized portion 11 as the center. The pressing portion 15 is provided at the tip of each of the two. Between the three bridge portions 12, a finger hook portion 16 formed by a gap is provided. By hooking a finger on these finger hooks 16, the fixture 10 can be suitably held, and the fixture 10 can be easily attached and detached.
In addition, in the fixture 10, the bridge portion 12 extends laterally from the other end portion of the magnetized portion 11 (a direction perpendicular to or intersecting with the radial direction of the magnetized portion 11 or the axial direction of the magnetized portion 11. ), And is formed in a curved shape that bulges toward the front side of the fixture 10 so as to be inclined toward one end side of the magnetized portion 11 toward the pressing portion 15 at the tip. A space 17 is formed on the back surface of the bridge portion 12 thus formed. Then, when removing the fixing tool 10, it is easy to put a finger on the bridge portion 12 by using the space 17 by inserting a fingertip into the space 17. Therefore, it is preferable to remove the fixing tool 10. Can be done.

The material that can be used for the fixture 10 is not particularly limited. Examples of the material include engineering plastics such as polycarbonate, polyamide, polyacetal, and polyphenylene ether, thermoplastic resins such as polyolefins such as polypropylene and polyethylene, polyesters such as polyethylene terephthalate, and phenol resins, epoxy resins, and melamine resins. Such a thermosetting resin, a metal such as iron, aluminum, and stainless steel, a paper material such as a pulp material or cardboard, or a wood material. In general, a thermoplastic resin is used as the material from the viewpoint of easy molding. However, when the fixture 10 is used as a surface treatment for a coating treatment, a material such as a polyolefin is difficult to adhere to. If used, the paint adhering to the fixture 10 may contaminate the masking object. Therefore, when such a material is used for the coating process, the material is modified so that the paint is easily attached, or a primer is applied to the surface of the fixture 10 to easily attach the paint. It is desirable to be
The magnet 13 that can be used for the fixture 10 is not particularly limited as long as it is a permanent magnet, and any of a neodymium magnet, a ferrite magnet, an alnico magnet, a samarium cobalt magnet, and the like can be used.

Next, a front bumper of a towing tractor that is a working vehicle will be described as an example of the masking target object of the present embodiment.
As shown in FIG. 2, in the front bumper 20, a center portion of the bumper body 21 is provided with a horizontally long rectangular hole in the front view and an inverted trapezoidal hole in the lower view in the front view. A mesh material is attached to these holes from the back side of the bumper body 21, and a front grill 22 is constituted by these holes and the mesh material.
The mesh material constituting the front grill 22 is made of iron, which is a magnetic metal, and is usually painted black. On the other hand, the bumper body 21 is painted in a color different from that of the front grille 22 such as white. Therefore, when the bumper body 21 is painted, the front grill 22 is protected from the painting by masking with the masking material.

As shown in FIG. 2, the masking material is formed in a predetermined shape capable of covering the surface of the front grill 22 that is an object to be masked. Specifically, the masking material of the present embodiment is configured by a first masking material 23A formed in a horizontally long quadrilateral shape in front view and a second masking material 23B formed in an inverted trapezoidal shape in front view. .
The material of the masking material is not particularly limited. For example, a paper material such as pulp material or cardboard, polypropylene (PP), polyethylene (PE), polystyrene (PS), acrylonitrile-styrene-copolymer (AS), acrylonitrile- Butadiene-styrene copolymer (ABS), polycarbonate (PC), acrylonitrile-ethylene-styrene copolymer (AES), polymethyl methacrylate (PMMA), ethylene-propylene copolymer (EPR), polyvinyl chloride (PVC) , Thermoplastic resins such as vinylidene chloride copolymer and ethylene-vinyl acetate copolymer, polyamide (PA), polyphenylene ether (PPE), modified polyphenylene ether (modified PPE), polyester, polyacetal (POM), polyethylene terephthalate (PE) ), Polybutylene terephthalate (PBT), polysulfone (PSF), polyethersulfone (PES), polyphenylene sulfide (PPS), polyarylate (PAR), polyetheretherketone (PEEK), polyamideimide (PAI), polyimide (PI) ), Polyetherimide (PEI), polyaminobismaleimide, methylpentene copolymer (TPX), cellulose acetate (CA) and other thermoplastic engineering plastics, PE and / or EPR modified polypropylene (modified PP), two or more Examples include polymer alloys and polymer blends containing resins, and biodegradable resins made from polylactic acid obtained from starches such as corn and sugarcane.
The method for forming the masking material is not particularly limited, and a general molding method using a molding die such as vacuum molding, pressure molding, injection molding, or the like, or a press cut in which a sheet material is punched into a predetermined shape using a press blade. It can also be formed by molding or the like.

Next, a masking method using the fixture 10 will be described.
When masking the front grill 22 which is an object to be masked, first, the first masking material 23A and the second masking material 23B are covered on the surface of the front grill 22, as shown in FIG. Thereafter, as shown in FIG. 3 (a), a plurality of the fixtures 10 are used, and the first masking material 23A and the second masking material 23B are fixed to the surface of the front grill 22 to perform the masking operation. Complete.
When the first masking material 23A is fixed by the fixing tool 10, the fixing tool 10 is arranged so that the pressing portion 15 of the fixing tool 10 is positioned at the periphery of the first masking material 23A, and the fixing The magnetized part 11 of the tool 10 is brought into contact with the surface of the first masking material 23A. Then, as shown in FIG. 3B, the attracting portion 14 of the magnetized portion 11 constitutes the front grille 22 via the first masking material 23A by the action of magnetic force by the magnet 13 incorporated therein. It will be in the state adsorbed by the iron mesh material. In this state, the first masking material 23 </ b> A is sandwiched between the front grill 22 and the attracting portion 14 of the magnetized portion 11, and the surface of the front grill 22 is held by the pressing portion 15 of the fixture 10. Is fixed to the surface of the front grill 22.

When the fixing tool 10 is removed from the surface of the first masking material 23A, the fingertip is inserted into the space 17 on the back side of any one of the bridge portions 12 with the finger hanging portion 16 as a clue. Then, the pressing portion 15 provided on the bridge portion 12 is lifted from the surface of the first masking material 23A. At this time, the pressing portion 15 at a position facing the raised pressing portion 15 and the magnetized portion 11 remains in contact with the surface of the first masking material 23A. Therefore, by applying the lever principle with the pressing portion 15 remaining in contact as a fulcrum, the lifting pressing portion 15 as a force point, and the suction portion 14 as an action point, the adsorption by the magnetic force of the suction portion 14 can be simplified. Can be released.
When attaching and detaching the fixture 10, the fixture 10 is configured separately from the masking materials 23A and 23B. Therefore, the fixture 10 can be placed at a desired location on the masking materials 23A and 23B. It is possible and easy to handle. Furthermore, since the fixing part 10 is provided with the adsorbing part 14 and the pressing part 15 separately, it is not necessary to use a large magnet for pressing the masking material, and it is easy to remove it from the masking part after the work. Since it is sufficient to use a magnet having a degree of attractive force, the fixture 10 is easy to use.

[Example of change]
The present invention is not limited to the configuration of the above embodiment, and may be modified as follows.
As shown in FIGS. 4A to 4D, the fixing device 10 may include four bridge portions 12. As shown in FIG. 4 (e), the fixture 10 having four bridge portions 12 can be used inferior to the three fixtures 10 in which the bridge portion 12 of the above-described embodiment is used. Furthermore, as shown to Fig.5 (a), you may provide the said bridge | bridging part 12 4 or more like the said fixture 10 makes the said bridge | bridging part 12 five.
Further, the bridge portion 12 is not limited to the long plate shape shown in the embodiment, and as shown in FIG. 5B, the bridge portion 12 may be one as an umbrella-like bridge portion 12. Note that the finger hook 16 may be omitted as in the bridge portion 12 shown in FIG. 5B, or a plurality of recesses are formed on the periphery of the umbrella-like bridge portion 12 as shown in FIG. And the concave portion may be used as the finger hook portion 16.
The fixture 10 and the masking material of the first masking material 23A and the second masking material 23B may be provided as the fixture 10 or the masking material, respectively, or may be masked by the fixture 10 and the masking material. A kit may be configured and provided as the masking kit.
In addition to the masking of the front bumper 20 shown in the embodiment, the fixture 10 may be used for masking a body such as a pillar or a door of an automobile if the object to be masked is made of a metal having magnetism. Alternatively, the present invention may be used for masking a metal masking object having magnetism in a ship, an airplane, a building, etc. without being limited to an automobile.

  Since the masking material fixture of the present invention is easy to handle and easy to use, it is useful for fixing the masking material and can be used industrially.

DESCRIPTION OF SYMBOLS 10 Fixing tool 11 Magnetic attachment part 12 Bridge part 13 Magnet 14 Adsorption part 14A Crevice 15 Holding part 16 Finger part 17 Space 20 Front bumper 21 Bumper main body 22 Front grille 23A 1st masking material 23B 2nd masking material

Claims (6)

A masking material fixture for fixing a masking material to a metal masking object having magnetism,
A columnar magnetized portion with magnets installed therein, and a bridge extending from the magnetized portion;
One end of the magnetized portion is provided with an attracting portion that enables attracting by magnetic force, and a pressing portion that allows the masking material to be pressed against the masking object is provided at the tip of the bridge portion. Masking material fixture characterized by being made.   A plurality of the bridge portions are provided so as to form a radial shape around the magnetized portion, and the holding portions are respectively provided at the end portions of the plurality of bridge portions, and the bridge portions are connected to each other. The masking material fixture according to claim 1, wherein a finger hooking portion comprising a gap is provided between the masking material fixing members.   The masking material fixture according to claim 1 or 2, wherein the magnet is housed in the magnetized part at a position away from one end of the magnetized part where the attracting part is provided.   The bridge portion extends in a lateral direction from the other end portion of the magnetized portion, and further has a shape that is inclined toward one end side of the magnetized portion toward the pressing portion at the tip. The masking material fixture according to any one of 3.   It is comprised with the masking material fixing tool as described in any one of Claims 1-4, and the masking material formed in the predetermined shape which can coat | cover the surface of the metal masking target object which has magnetism. A masking kit characterized by A masking method using the masking material fixture according to any one of claims 1 to 4,
After covering the surface of the masking object with the masking material, the masking material fixing tool is disposed so that the pressing portion is positioned at the periphery of the masking material, and the masking object is inserted into the masking object via the masking material. By adhering the magnetized part and sandwiching the masking material between the masking object and the magnetized part, and pressing the masking material against the masking object by the pressing part, A masking method comprising fixing the masking material to the masking method.

Images