JP5452044B2 - Board cutting file - Google Patents

Description

  The present invention relates to a file that is a tool for cutting or polishing, and particularly to a file that is useful when cutting or chamfering a cut surface of a gypsum board for construction.

  In construction work, plasterboard is often used for wall and ceiling boarding, but this plasterboard is cut with a saw or cutter knife, and then the plasterboards collide exactly when boarding In this way, the cut surface is finished with a long and thin plate-like file. Conventional files used for such work include those described in the following prior art documents.

Japanese Patent Laid-Open No. 11-33824 Utility Model Registration No. 3061280

Internet URL: http://www.miyanaka.com/item/08.html Internet URL: http://www12.ocn.ne.jp/~yasuri/yasuri_page03.html Internet URL: http://www.f-file.co.jp/file/tokushu.htm

  However, in this type of conventional board file, the cutting direction by pushing and pulling is not guided, and many of the coarse and fine portions are provided on the front and back sides. Therefore, after the rough cutting by the coarse portion, the fine portion is used. When finishing, it was necessary to change the file upside down, which was not easy to use.

  The present invention has been made in view of the above points, and a technical problem thereof is to provide a board cutting file that is easy to use.

As means for effectively solving the technical problem described above, the board cutting file according to the invention of claim 1 includes a cutting unit and a guide unit for guiding a cutting direction by the cutting unit on the file body. Arranged in a direction orthogonal to the cutting direction , a plurality of the cutting parts are arranged with a height difference in a direction orthogonal to the cutting direction, and the guide part is a stepped part due to a height difference between the plurality of cutting parts. characterized in that it consists of.

The file for cutting a board according to the invention of claim 2 is characterized in that, in the configuration of claim 1, the roughness of the eyes in the plurality of cutting parts is different from each other.

According to the board cutting file according to the first aspect of the present invention, the stepped portion due to the height difference between the plurality of cutting portions has an action of guiding the pushing and pulling of the file main body in the cutting direction, and the cutting direction by the cutting portion is It is easy to use because it is guided by the stepped portion .

According to the file for cutting a board according to the invention of claim 2 , in addition to the effect of claim 1, after the rough cutting by the rough part, finishing cutting by the fine part can be performed, and the rough part and the fine part are in the cutting direction. Since it is arranged in a direction perpendicular to the rough surface, when shifting to roughing after finishing, there is no need to change the file body in the reverse direction as in the case where the coarse and fine portions are arranged on the front and back sides. Can be improved.

It is a perspective view of the front side which shows the file for board cutting of embodiment which concerns on this invention. It is a front view which shows the file for board cutting of embodiment which concerns on this invention. It is a perspective view which expands and shows a part of coarse part of a file main body. It is a perspective view which expands and shows a part of narrow part of a file main body. It is explanatory drawing which shows arrangement | positioning of a cutting protrusion, and the flow of cutting powder. It is sectional drawing cut | disconnected and shown by the VI-VI 'line | wire of FIG. It is sectional drawing cut | disconnected and shown by the VII-VII 'line | wire of FIG. It is sectional drawing which cuts and shows a use condition by the VI-VI 'line of FIG. It is a perspective view of the front side which shows the file for board cutting of other embodiment which concerns on this invention.

  Hereinafter, a preferred embodiment of a board cutting file according to the present invention will be described with reference to the drawings.

  The board cutting file in this embodiment is composed of a file main body 1 and a grip 2 attached to the back side thereof as shown in FIGS. Is formed.

  The file body 1 is made of a lightweight and wear-resistant metal such as aluminum, aluminum alloy, magnesium, magnesium alloy, titanium, beryllium, or ceramics or resin, and has a pair of cutting portions 11 extending in the longitudinal direction thereof. 12 is formed. In this embodiment, the cutting direction by the cutting portions 11 and 12 is the longitudinal direction of the file main body 1.

  One cutting part 11 has a relatively coarse mesh (hereinafter referred to as coarse part 11), and the other cutting part 12 has a relatively fine grain (hereinafter referred to as fine part 12). 11 and the fine part 12 are arranged in a direction perpendicular to the cutting direction, in other words, in the width direction of the file main body 1 with a difference in height from each other through the step part 13. A guide wall 14 is formed along the edge of the coarse portion 11 opposite to the fine portion 12, and a corner finishing portion 15 is formed along the edge of the fine portion 12 opposite to the coarse portion 11. The step portion 13 and the guide wall 14 extend in parallel to each other in the longitudinal direction of the file main body 1.

  The coarse portion 11 is formed in a relatively depressed state by the step portion 13 between the fine portion 12 and the guide wall 14 on the opposite side, and as shown in FIG. 2 and FIG. A large number of beams 101 extending in the width direction of the file main body 1 are provided between the stepped portion 13 and the guide wall 14. And between the adjacent beams 101, 101 is a cutting powder discharge window 102, respectively.

  As shown in FIGS. 3 and 5, each beam 101 in the coarse portion 11 has a plurality of cuttings having a cutting surface 111 a that is substantially flush with one end surface 101 a of the beam 101 facing one longitudinal direction of the file main body 1. 110 A of 1st protrusions which consist of protrusion 111, and the 2nd protrusion group which consists of several cutting protrusion 112 which has the other end surface 101b of the beam 101 and the cutting surface 112a substantially flush with the other longitudinal direction of the file main body 1 110B is formed. Therefore, the first protrusion group 110 </ b> A and the second protrusion group 110 </ b> B exist alternately in the longitudinal direction of the file main body 1.

  The cutting projections 111 and 112 have an isosceles triangle shape in which the projection shape of the file main body 1 in the longitudinal direction has an upper surface of the beam 101 as a base, and the planar projection shape shown in FIG. 5 has the cutting surfaces 111a and 112a as the base. It is formed in the shape of a triangular pyramid having an isosceles triangular shape.

  Further, as shown in FIG. 5, each cutting projection 111 of the first projection group 110A and each cutting projection 111 of the first projection group 110A adjacent to this through the second projection group 110B, in other words, The cutting protrusion 111 of the first protrusion group 110A in the beam 101 at an arbitrary position and the cutting protrusion 111 of the first protrusion group 110A in the beam 101 adjacent to the beam 101 are slightly in the width direction of the file body 1. It is formed with a deviation δ1.

  Similarly, each cutting protrusion 112 of the second protrusion group 110B and each cutting protrusion 112 of the second protrusion group 110B adjacent to the cutting protrusion 112 via the first protrusion group 110A, in other words, the beam 101 at an arbitrary position. The cutting protrusion 112 of the second protrusion group 110B and the cutting protrusion 112 of the second protrusion group 110B in the beam 101 adjacent to the beam 101 are formed with a slight deviation δ1 from each other in the width direction of the file main body 1. . The direction of displacement of the first protrusion groups 110A and 110A and the direction of displacement of the second protrusion groups 110B and 110B are opposite to each other.

  Therefore, the first protrusions 110A and 110B of the first protrusion group 110A and the cutting protrusions 112 of the second protrusion group 110B facing each other on the beam 101 are opposed to each other via the cutting powder discharge window 102. The cutting projections 111 of the projection group 110A and the cutting projections 112 of the second projection group 110B are also shifted from each other in the width direction of the file body 1, and the magnitudes of the shifts are indicated by reference numerals δ2 and δ3 in FIG. As shown, it is gradually changing.

  For this reason, as shown in FIG. 6 and FIG. 7, the pointed portions of the cutting projections 111 and 112 in the coarse portion 11 are in a state of being arranged substantially linearly when viewed from the longitudinal direction.

  On the bottom surface of each beam 101 in the file main body 1, narrow grooves 113 and 114 extending in a substantially V shape are formed along the bottoms of two inclined surfaces other than the cutting surfaces 111a and 112a in the respective cutting projections 111 and 112 having a triangular pyramid shape. The narrow grooves 113 and 114 are opened to the cutting powder discharge window 102 between the beams 101 and 101.

  In addition, the edge part 102a by the side of the fine part 12 in each cutting powder discharge | emission window 102 is extended to the level | step-difference part 13, as FIG.1 and FIG.6 shows.

  On the other hand, as shown in FIG. 1, the fine portion 12 is formed to be relatively higher than the coarse portion 11 by the step portion 13, and has a number of belt-like raised portions 103 extending in the width direction of the file main body 1. And between the adjacent belt-like ridges 103, 103 is a cutting powder discharge groove 104, respectively.

  As shown in FIGS. 4 and 5, each band-like ridge 103 in the narrow portion 12 has a cutting surface 121 a that is substantially flush with one end surface 103 a of the band-like ridge 103 and facing one side in the longitudinal direction of the file main body 1. A first projection group 120A composed of a plurality of cutting projections 121 and a plurality of cutting projections 122 having a cutting surface 122a that is substantially flush with the other end surface 103b of the band-like ridge 103 and facing the other longitudinal direction of the file main body 1. A second protrusion group 120B is formed. Therefore, the first protrusion group 120 </ b> A and the second protrusion group 120 </ b> B are alternately present in the longitudinal direction of the file main body 1.

  The cutting projections 121 and 122 have an isosceles triangle shape in which the projection shape of the file main body 1 in the longitudinal direction has an upper surface of the belt-like raised portion 103 as a base, and the planar projection shape shown in FIG. 5 has the cutting surfaces 121a and 122a. It is formed in the shape of a triangular pyramid having an isosceles triangle shape with the base of.

  The band-like ridge 103 and the cutting powder discharge groove 104 in the fine portion 12 are smaller in the longitudinal direction of the file body 1 than the beam 101 and the cutting powder discharge window 102 in the coarse portion 11, and the cutting protrusions 121 and 122 in the fine portion 12. Is smaller than the cutting projections 111 and 112 in the coarse portion 11 and has a smaller projecting interval (fine eyes).

  Similarly to the coarse portion 11, the fine portion 12 also has each cutting projection 121 of the first projection group 120A, and each cutting projection 121 of the first projection group 120A adjacent to the cutting projection 121 via the second projection group 120B, In other words, the cutting protrusion 121 of the first protrusion group 120A in the belt-like ridge 103 at an arbitrary position and the cutting protrusion 121 of the first protrusion group 120A in the belt-like ridge 103 adjacent to the belt-like ridge 103 are fine portions. 12 in a direction perpendicular to the cutting direction (width direction of the file main body 1) with a slight deviation δ4.

  Similarly, each cutting protrusion 122 of the second protrusion group 120B and each cutting protrusion 122 of the second protrusion group 120B adjacent to the cutting protrusion 122 via the first protrusion group 120A, in other words, a belt-like ridge at an arbitrary position. The cutting protrusion 122 of the second protrusion group 120B in 103 and the cutting protrusion 122 of the second protrusion group 120B in the belt-like ridge 103 adjacent to the belt-like ridge 103 are slightly shifted from each other in the width direction of the file body 1. It is formed with δ4. The direction of displacement of the first protrusion groups 120A and 120A and the direction of displacement of the second protrusion groups 120B and 120B are opposite to each other.

  Therefore, the cutting protrusion 121 of the first protrusion group 120A and the cutting protrusion 122 of the second protrusion group 120B facing each other on the belt-like ridge 103 are opposed to each other via the cutting powder discharge groove 104. The cutting projections 121 of the first projection group 120A and the cutting projections 122 of the second projection group 120B are also displaced from each other in the width direction of the file main body 1, and the magnitudes of the deviations are denoted by reference numerals δ5 and δ6 in FIG. As shown, it is gradually changing.

  For this reason, as shown in FIG. 6 and FIG. 7, even in the fine portion 12, the sharp ends of the cutting projections 121 and 122 are in a state of being arranged substantially linearly when viewed from the longitudinal direction.

  The corner finishing portion 15 includes cutting teeth 151 formed along the edge of the fine portion 12 opposite to the coarse portion 11, and cutting teeth 152 rising from the cutting portion 152 approximately perpendicular to the fine portion 12. Further, the cutting teeth 151 and 152 have a directivity by alternately forming steep slopes and gentle slopes, and the directivities are mutually separated from the longitudinal center of the file main body 1. It is set in the reverse direction.

  The grip 2 is formed of a hard plastic such as AS resin, ABS resin, acrylic, polycarbonate, melamine, or an elastic body such as rubber / elastomer. As shown in FIGS. A side wall portion 21 joined to the outer side surface of the guide wall 14 and a side wall portion 22 joined to the outer side surface of the inner wall portion 16 rising from the side opposite to the guide wall 14 in the file main body 1 (entering corner finishing portion 15 side); The back part 23 formed so as to extend between the both side wall parts 21 and 22 in an arch shape so as to cover the back side of the file body 1, and the end wall part formed so as to close both longitudinal ends on the side wall part 22 side. 24 (only one end wall portion is shown in the figure). Concavities and convexities for preventing slipping are formed on the outer surfaces of the side wall portions 21 and 22.

  An accommodation portion 3 is defined by a grip 2 on the back side of the file main body 1. The accommodating portion 3 is for accommodating cutting powder discharged from the cutting powder discharge window 102 of the file main body 1.

  As shown in FIG. 8, the board cutting file of the illustrated configuration configured as described above includes an interior gypsum board B that is attached to a wall surface of a building, a ceiling, or the like, and a cutter or a saw (not shown). This is used to cut the edge of the gypsum board B so as to be in a state of being abutted with no gap when being pasted after being cut into a predetermined dimension by the above.

  According to this board cutting file, the grip 2 has a size that can be gripped with one hand, is a kamaboko type that is easy to grip, and is light in weight, so that the hand is less likely to get tired and is easy to use.

  When the edge of the gypsum board B is cut with, for example, the rough portion 11, as shown in FIG. 5 described above, the rough portion 11 has the cutting projections 111 and 112 oriented in the longitudinal direction of the file body 1. On the other hand, since the first protrusion group 110A and the second protrusion group 110B opposite to each other are alternately formed, cutting is performed by pushing the file main body 1 in the longitudinal direction (for example, moving it in the V1 direction in FIG. 5). There is no direction of cutting amount or cutting resistance in the stroke and the cutting stroke by pulling (for example, moving in the V2 direction in FIG. 5), and this is also easy to use.

  Further, as shown in FIG. 8, when the edge portion of the gypsum board B is cut with the rough portion 11, the cutting direction, that is, the figure, is determined by applying the inner surface 14 a or the step portion 13 of the guide wall 14 to the gypsum board B. The operation of pushing and pulling in the direction orthogonal to the cross section of 8 is guided in the longitudinal direction of the file body 1, so that cutting becomes easy and the perpendicularity of the surface to be cut with respect to the side surface of the gypsum board B can be easily secured. it can.

  In addition, since the cutting projections 111 and 112 in the coarse portion 11 are gradually shifted with a slight deviation δ1 in the width direction, remarkable striations due to the cutting projections 111 and 112 are formed on the surface to be cut of the gypsum board B. It is difficult to form (groove-shaped cutting marks), and it can be cut evenly.

  Further, most of the cutting powder (fine gypsum powder) P generated in the cutting process by the coarse portion 11 is mainly due to the cutting surface 111a of the cutting protrusion 111 of the first protrusion group 110A shown in FIG. 3 or FIG. Extruded or extruded by the cutting surface 112a of the cutting projection 112 of the second projection group 110B and discharged from the cutting powder discharge window 102 to the receiving portion 3 on the back side as shown in FIG.

  Moreover, in the cutting process by moving the file main body 1 in the direction V1 in FIG. 5, that is, the direction in which the cutting surface 111a of the first protrusion group 110A faces the cutting surface 111a, the opposite side (V2 direction) from the cutting surface 111a. ) Is smoothly discharged to the cutting powder discharge window 102, and conversely, the cutting surface 112a of the file main body 1 in the direction V2 in FIG. 5, that is, the cutting protrusion 112 of the second protrusion group 110B faces. In the cutting process by moving in the direction, the cutting powder that wraps around from the cutting surface 112a to the opposite side (direction V1) is smoothly discharged to the cutting powder discharge window 102. For this reason, it is possible to effectively prevent the coarse portion 11 from being clogged with cutting powder and reducing the sharpness.

  And most of the cutting powder P discharged from the cutting powder discharge window 102 falls into the storage portion 3 on the back side of the file body 1 and is stored. For this reason, it is possible to minimize the scattering of the cutting powder on the interior construction site and soiling the floor surface, the wall surface, the worker's clothes, etc., and by sucking the cutting powder that soared into the air It is possible to prevent adverse effects on the health of workers as much as possible.

  The cutting powder P accumulated in the storage portion 3 can be easily discarded from the opening 3a or the cutting powder discharge window 102 opened on both sides of the coarse portion 11 in the longitudinal direction.

  Further, since the file main body 1 includes the coarse portion 11 and the fine portion 12, after the rough cut by the coarse portion 11, the finish cut by the fine portion 12 can be performed. Since the coarse portion 11 and the fine portion 12 are arranged in the width direction of the file main body 1, when the coarse portion 11 and the fine portion 12 are shifted to the finish cutting after the rough cut by the coarse portion 11, the coarse portion and the fine portion are front and back. Unlike those arranged in the above, there is no need to change the file body 1 in the opposite direction, and this is also convenient.

  When the edge of the gypsum board B is finished and cut with the fine part 12, the fine part 12 also has the cutting projections 121 and 122 in the longitudinal direction of the file body 1 as shown in FIG. On the other hand, since the first protrusion group 120A and the second protrusion group 120B opposite to each other are alternately formed, cutting is performed by pushing the file main body 1 in the longitudinal direction (for example, moving it in the V1 direction in FIG. 5). There is no direction of the cutting amount or cutting resistance between the stroke and the cutting stroke by pulling (for example, moving in the V2 direction in FIG. 5), and it is easy to use.

  Further, since the cutting projections 121 and 122 in the narrow portion 12 are also gradually shifted with a slight shift δ4 in the width direction, significant striations (by the cutting projections 121 and 122) on the surface to be cut of the gypsum board ( Groove-shaped cutting traces) are difficult to form and can be cut evenly.

  Further, the cutting powder generated in the cutting process by the fine portion 12 is pushed out by the cutting surface 121a of the cutting protrusion 121 of the first protrusion group 120A shown in FIG. 4 or FIG. 5, or the cutting of the second protrusion group 120B. It is discharged from the cutting powder discharge groove 104 so as to be pushed out by the cutting surface 122 a of the protrusion 122. For this reason, it is possible to effectively prevent the fine portions 12 from being clogged with cutting powder and reducing the sharpness.

  Further, the entering corner finishing portion 15 is convenient for finish cutting of an entering corner portion formed by a plurality of gypsum boards.

  In the illustrated embodiment described above, the coarse portion 11 and the fine portion 12 are provided with a difference in height from each other through the step portion 13, but the coarse portion 11 and the fine portion 12 are made the same height, In addition, a second guide wall extending in the longitudinal direction of the file main body 1 may be provided in parallel with the guide wall 14. In this way, it is possible to provide a push-pull guide even during finish cutting by the fine portion 12.

  FIG. 9 shows another embodiment of the board cutting file according to the present invention. That is, in the form shown in FIG. 9, a pair of coarse portions 11, 11 extending in the longitudinal direction of the file main body 1 at the same height and along the edges on both sides in the width direction of the file main body 1 in the longitudinal direction of the file main body 1. A plurality of (in the illustrated example, a pair) guide walls 14, 14 and a second guide wall 17 extending in the longitudinal direction of the file main body 1 along the coarse portions 11, 11 are formed in the width direction of the file main body 1. It is provided side by side.

  The configuration of each coarse portion 11, the grip 2, and the like can be configured in the same manner as in the embodiment described above.

  According to this embodiment, since a plurality of coarse portions 11 that are frequently used are provided, even if one coarse portion is clogged, the other coarse portion can be used, and the service life due to wear is also reduced. It can be long-lasting. In addition, when using any of the coarse portions 11, the cutting direction by pushing and pulling is guided by the guide wall 14 and the second guide wall 17, which is convenient.

  In addition to the step portion 13, the guide wall 14, and the second guide wall 17 as described in the above embodiments, the guide portions for guiding the cutting direction include a plurality of guide portions arranged in the longitudinal direction of the file main body 1. Various forms such as those made of plate-like or columnar protrusions are conceivable.

1 File body 11 Coarse part (cutting part)
12 Fine part (cutting part)
13 Step part (guide part)
14 Guide wall (guide section)
15 corner finishing part (cutting part)
17 Second guide wall (guide section)
111, 112, 121, 122 Cutting protrusion 111a, 112a, 121a, 122a Cutting surface

Claims (2)

A cutting portion and a guide portion for guiding a cutting direction by the cutting portion are arranged in the file main body in a direction orthogonal to the cutting direction, and the cutting portion has a height difference in a direction orthogonal to the cutting direction. The board cutting file is characterized in that a plurality of the guide portions are formed of step portions due to a height difference between the plurality of cutting portions . The file for board cutting according to claim 1, wherein the roughness of the eyes in the plurality of cutting portions is different from each other .

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