JP6429912B2 - Cutter guide - Google Patents

Description

  The present invention relates to a cutter guide used when cutting a ceiling board or the like with a cutter.

  On the ceiling of the building, an inspection port serving as an entrance for inspecting equipment behind the ceiling is installed. When installing the inspection port, it is necessary to provide an opening in the ceiling board. An instrument used when providing an opening in a ceiling board includes a line quoting ruler disclosed in Patent Document 1. A line quoting ruler (hereinafter referred to as a ruler) is an instrument for drawing a line with no deviation on a ceiling board.

Japanese Patent Laid-Open No. 2015-200133

  When using the ruler disclosed in Patent Document 1, the operator draws a line on the ceiling board using the ruler, and then cuts the ceiling board while visually observing the line. In this case, even if a line is drawn using a ruler, there is a problem that an opening having a target size cannot be provided in the ceiling board because the cutting line of the ceiling board is shifted from the line.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a cutter guide that enables an opening of a target size to be provided in a ceiling board.

The cutter guide according to the present invention is a base plate that is a square plate with one side having a predetermined length, a handle attached to the base plate, and a square plate with one side shorter than the base plate. A plate that is fixed to the base plate so that the sides forming the outer periphery are parallel to the sides forming the outer periphery of the base plate, and forming a step at a position that is a predetermined distance from the outer periphery of the base plate , The base plate has a slit formed at a position separated from the intersection of the two sides by a predetermined distance on each of two sides orthogonal to each other among the sides constituting the outer periphery of the base plate. It has a notch part which forms a level | step difference in the position which only the predetermined distance left | separated from the slit .

  According to this invention, the cutter guide which makes it possible to provide the opening of the target size in the ceiling board can be obtained.

2 is a front view of a cutter guide according to Embodiment 1. FIG. 3 is a side view of the cutter guide according to Embodiment 1. FIG. FIG. 3A is a diagram illustrating an appearance of a general cutter. FIG. 3B is a view when the cutter is viewed from the P direction of FIG. 3A. It is a figure explaining the alignment of the cutter guide with respect to a ceiling board. It is sectional drawing which showed a mode that a ceiling board was cut | disconnected using a cutter and a cutter guide. 6 is a front view of a cutter guide according to Embodiment 2. FIG. 6 is a front view of a cutter guide according to Embodiment 3. FIG. 6 is a side view of a cutter guide according to Embodiment 3. FIG. FIG. 9A is a diagram illustrating a state in which the cutter guide according to Embodiment 3 is attached to the ceiling board. FIG. 9B is a diagram illustrating a state in which the cutter guide according to Embodiment 3 is rotated while attached to the ceiling board.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a front view of a cutter guide 101 according to the first embodiment. FIG. 2 is a side view of the cutter guide 101 according to the first embodiment. The cutter guide 101 according to the first embodiment includes a base plate 11, a handle 21, and a plate 31.

  The size of the inspection port installed on the ceiling is determined by the standard. The sizes include 300 mm × 300 mm, 450 mm × 450 mm, 600 mm × 600 mm, 900 mm × 900 mm, and the like.

  Hereinafter, the case where the inspection port of 450 mm x 450 mm size is installed in a ceiling board is demonstrated. The cutter guide 101 is used to provide an opening in the ceiling board when the inspection port of the size is installed in the ceiling board.

  The base plate 11 is a square plate having a side of about 450 mm. The base plate 11 is composed of an aluminum composite plate or the like. The thickness of the base plate 11 is about 3 mm. In addition, you may form the scale for a dimension measurement in each edge | side used as the outer periphery of the base board 11. FIG. A handle 21 is attached to the center of the base plate 11.

  The plate 31 is a square plate having one side of about 370 mm. The plate 31 is composed of an aluminum composite plate or the like. The thickness of the plate 31 is about 5 mm. The plate 31 is fixed to the base plate 11. The fixing is, for example, adhesion. The plate 31 is fixed to the base plate 11 so that the sides constituting the outer periphery of the plate 31 are parallel to the sides constituting the outer periphery of the base plate 11. The sides constituting the outer periphery of the plate 31 are positioned approximately 40 mm inside from the outer periphery of the base plate 11.

  As shown in FIG. 2, a step 41 is formed in the thickness direction by fixing the plate 31 to the base plate 11. A blade cover 203 of the cutter 200 described later contacts the step 41.

  The base plate 11 has a first hollow portion 11a and a second hollow portion 11b on both sides of the position where the handle 21 is attached. The plate 31 has a third hollow portion 31a. The third hollow portion 31a communicates with the first hollow portion 11a and the second hollow portion 11b. The first hollow portion 11a, the second hollow portion 11b, and the third hollow portion 31a are provided for an operator to visually recognize the ceiling board when the cutter guide 101 is attached to the ceiling board. The first hollow portion 11a, the second hollow portion 11b, and the third hollow portion 31a are provided to reduce the weight of the cutter guide 101.

  The base plate 11 has a plurality of marking slits 11 c at four corners of the base plate 11. The plurality of marking slits 11c are formed at, for example, eight locations shown in FIG. The plurality of scribing slits 11 c are formed with a predetermined length and a predetermined width at a position about 10 mm inside from the side constituting the outer periphery of the base plate 11. The plurality of marking slits 11c are provided to mark the size of the ceiling board to be accommodated in the frame of the lid of the inspection port with a pencil or the like.

  The cutter guide 101 has a plurality of screw holes 61 that pass through the base plate 11 and the plate 31 coaxially. The plurality of screw holes 61 are provided, for example, at eight locations shown in FIG. The plurality of screw holes 61 are holes provided for attaching the cutter guide 101 to the ceiling board. A screw or the like is used for the attachment.

  Here, the cutter 200 used when cutting the ceiling board will be described. FIG. 3A is a diagram illustrating an appearance of a general cutter 200. The cutter 200 includes a main body 201, a blade 202, a blade cover 203, and the like. FIG. 3B is a diagram showing the blade 202 and the blade cover 203 when the cutter 200 is viewed from the P direction shown in FIG. 3A. The blade cover 203 is a rectangular plate-like component that is attached to the blade 202 side of the main body 201. The blade cover 203 is configured so that the blade 202 can be inserted therethrough. The dimension from the blade 202 to the side surface in the longitudinal direction of the blade cover 203 (dimension T in FIG. 3B) in the short direction of the blade cover 203 is about 40 mm.

Next, a procedure in which the operator uses the cutter guide 101 to provide an opening in the ceiling board will be described.
(1) An operator aligns the cutter guide 101 in accordance with the joints on the ceiling. FIG. 4 is a diagram illustrating the alignment of the cutter guide 101 with respect to the ceiling board. The operator uses the screw hole 61 positioned at the center of each side among the plurality of screw holes 61 as a mark, and positions the cutter guide 101 so that the lines C and D shown in FIG. 4 coincide with the joints on the ceiling. Align. (2) The operator attaches the cutter guide 101 to the ceiling board by tightening the plurality of screw holes 61. At this time, instead of screwing all of the plurality of screw holes 61, it is only necessary to screw the screw holes 61 at two diagonal positions or at four corners. (3) The operator uses the marking slit 11c and draws a marking line with a pencil or the like. (4) The operator cuts the ceiling board by moving the cutter 200 while bringing the longitudinal side surface of the blade cover 203 of the cutter 200 into contact with the step 41 of the cutter guide 101. FIG. 5 is a diagram showing a state in which the ceiling board is cut using the cutter 200 and the cutter guide 101. At this time, cuts are made along each of the four sides that are the outer periphery of the cutter guide 101, and the cuts are not continued. (5) The operator removes the screw tightening of the plurality of screw holes 61 and removes the cutter guide 101 from the ceiling board. (6) The operator uses the cutter 200 to make the cuts continuous, and provides an opening in the ceiling board. The operator cuts the ceiling board on the cut side along the marking line with the cutter 200 to produce the ceiling board used for the lid of the inspection port.

Although the cutter guide 101 used when providing an opening corresponding to a 450 mm × 450 mm inspection port has been described above, the cutter guide 101 may be appropriately configured according to the size of the inspection port.
For example, when an opening corresponding to a 600 mm × 600 mm size inspection opening is provided, the cutter guide 101 is constituted by a square base plate 11 having a side of about 600 mm and a square plate 31 having a side of about 520 mm. That's fine.

  Moreover, although the case where the dimension T of the cutter 200 was about 40 mm was demonstrated above, the dimension T changes with manufacturers of the cutter 200. FIG. Therefore, what is necessary is just to determine the size of the plate 31 according to the dimension T of the cutter 200 to be used. The plate 31 may be configured to be detachable from the base plate 11. In that case, the plate 31 can be replaced and used in accordance with the manufacturer of the cutter 200.

  In the above description, the step 31 is formed by fixing the plate 31 to the base plate 11. However, the plate 31 and the base plate 11 are formed of one member, and the step 41 is formed on the member. You may comprise as follows.

  Further, the base plate 11 and the plate 31 may be made of, for example, transparent reinforced plastic. In that case, when the cutter guide 101 is attached to the ceiling board, it becomes easier for the operator to visually recognize the ceiling board.

  As described above, the cutter guide 101 according to the first embodiment includes the base plate 11 that is a square plate having one side having a predetermined length, the handle 21 attached to the base plate 11, and the length of one side. Is a square plate shorter than the base plate 11, and is fixed to the base plate 11 so that the sides forming the outer periphery are parallel to the sides forming the outer periphery of the base plate 11, and a predetermined distance from the outer periphery of the base plate 11. And a plate 31 that forms a step at a position only on the inner side. For this reason, the cutter guide which makes it possible to provide opening of target size in a ceiling board can be obtained.

  Further, by cutting the ceiling board while bringing the cutter 200 into contact with the cutter guide 101, the finish of the cutting line can be made a straight line.

  Further, by cutting the ceiling board while bringing the cutter 200 into contact with the cutter guide 101, it is possible to prevent the size of the opening from varying depending on the skill of the operator.

  Further, the ceiling board can be prevented from being soiled by cutting the ceiling board while the cutter 200 is in contact with the cutter guide 101.

  Further, by cutting the ceiling board while bringing the cutter 200 into contact with the cutter guide 101, it is possible to omit the work of drawing a marking line for opening as in the prior art, and the work efficiency can be increased.

  Simultaneously with the operation of providing the opening, it is possible to use the marking slit 11c to draw marking lines on the ceiling board to be accommodated in the frame of the lid of the inspection port. Thereby, the efficiency of inspection port installation work can be raised.

Embodiment 2. FIG.
In the second embodiment, a configuration example in the case where a 300 mm × 300 mm inspection port is installed on a ceiling board will be described. The cutter guide 102 is used to provide an opening in the ceiling board when the inspection port of the size is installed in the ceiling board. In addition, about the structure similar to Embodiment 1, the overlapping description is abbreviate | omitted.

  FIG. 6 is a front view of the cutter guide 102 according to the second embodiment. The cutter guide 102 according to the second embodiment includes a base plate 12, a marking slit 12a, a handle 22, a plate 32, a plurality of screw holes 62, and the like. The cutter guide 102 according to the second embodiment is obtained by providing the cutter guide 101 according to the first embodiment with a first slit portion 70 and a second slit portion 80.

  As shown in FIG. 6, of the sides constituting the outer periphery of the base plate 12, two sides orthogonal to each other are referred to as a side X and a side Y. Further, an intersection of the side X and the side Y is defined as a point Z. The first slit portion 70 has a slit 71 formed in parallel with the side X on the side Y at a position about 300 mm from the point Z. The length of the slit 71 is about 100 mm, and the width of the slit 71 is about 3 mm. The first slit portion 70 has a U-shaped notch 32 a formed in the plate 32 at a position corresponding to the slit 71. The notches 32a are on both sides in the width direction of the slit 71, and form a step 42a at a position away from the slit 71 by a predetermined distance. The notch 32 a is formed so that the step 42 a is located at a position of about 40 mm from the slit 71.

  The second slit portion 80 has a slit 81 formed in parallel with the side Y on the side X at a position about 300 mm from the point Z. The length of the slit 81 is about 100 mm, and the width of the slit 81 is about 3 mm. The second slit 80 has a U-shaped notch 32 b formed in the plate 32 at a position corresponding to the slit 81. The notches 32b are on both sides in the width direction of the slit 81, and form a step 42b at a position away from the slit 81 by a predetermined distance. The notch 32b is formed such that the step 42b is located at a position of about 40 mm from the slit 81.

Next, a procedure in which an operator uses the cutter guide 102 to provide an opening in the ceiling board when installing a 300 mm × 300 mm inspection port on the ceiling board will be described.
(1) The operator attaches the cutter guide 102 to the ceiling board by screwing the plurality of screw holes 62. At this time, instead of screwing all of the plurality of screw holes 62, it is only necessary to screw the two screw holes 61 at the four diagonal corners or the four screw holes 61 at the four corners. (2) The operator cuts the ceiling board by moving the cutter 200 while bringing the longitudinal side surface of the blade cover 203 of the cutter 200 into contact with the steps 42a and 42b of the cutter guide 102. (3) The operator eliminates the screw tightening of the plurality of screw holes 62, rotates the cutter guide 102 clockwise by 90 °, and again tightens the plurality of screw holes 62 to cause the cutter guide 102 to be attached to the ceiling board. Install. At this time, for example, the operator aligns the point Z of the cutter guide 102 with the end point of the cut formed by the slit 71. (4) The worker performs the same operation as (2). (5) The operator removes the screw tightening of the plurality of screw holes 62 and removes the cutter guide 102 from the ceiling board. (6) The operator uses the cutter 200 to make the cuts continuous, and provides an opening in the ceiling board.

  As described above, the cutter guide 102 according to the second embodiment is provided with the first slit portion 70 and the second slit portion 80 in the cutter guide 101 according to the first embodiment. For this reason, it can be used for the operation | work which provides two opening from which size differs, and the efficiency improvement of work and reduction of cost can be implement | achieved.

Embodiment 3 FIG.
In the third embodiment, a configuration example in the case where a 900 mm × 900 mm size inspection port is installed on a ceiling board will be described. The cutter guide 103 is used to provide an opening in the ceiling board when the inspection port of the size is installed in the ceiling board. In addition, about the structure similar to Embodiment 1, the overlapping description is abbreviate | omitted.

  FIG. 7 is a front view of the cutter guide 103 according to the third embodiment. FIG. 8 is a side view of the cutter guide 103 according to the third embodiment. The cutter guide 103 according to the third embodiment includes a base plate 13, a handle 23, a plate 33, a plurality of screw holes 63a to 63f, and the like.

  The base plate 13 is a rectangular plate having a longitudinal side of about 900 mm and a short side of about 480 mm. The plate 33 is a rectangular plate having a long side of about 820 mm and a short side of about 440 mm. The plate 33 is fixed to the base plate 13. The plate 33 is fixed to the base plate 13 so that the side surface of one side in the longitudinal direction is the same surface as the side surface of one side in the longitudinal direction of the base plate 11 (hereinafter referred to as a non-step-formed surface E). The The plate 33 is fixed to the base plate 13 such that three of the four sides constituting the outer periphery, excluding the side that forms the step non-formation surface E, are positioned approximately 40 mm inside from the outer periphery of the base plate 13. The

  As shown in FIG. 8, the step 33 is formed in the thickness direction by fixing the plate 33 to the base plate 13.

  The base plate 13 has a first hollow portion 13a and a second hollow portion 13b on both sides of the position where the handle 23 is attached. The plate 33 has a third hollow portion 33a. The third hollow portion 33a communicates with the first hollow portion 13a and the second hollow portion 13b.

  The cutter guide 103 has a plurality of screw holes 63a to 63f that pass through the base plate 13 and the plate 33 coaxially. The plurality of screw holes 63a to 63f are provided at, for example, six locations shown in FIG. The screw hole 63e, which is one of the plurality of screw holes 63a to 63f, is also a rotation shaft hole. As shown in FIG. 7, the rotation shaft hole 63e is a position that is the center in the longitudinal direction of the cutter guide 103, and the dimension in the short direction from the step non-forming surface E side on the step non-forming surface E side is 30 mm. It is provided in the position.

Next, a procedure will be described in which an operator uses the cutter guide 103 to provide an opening in the ceiling board when installing a 900 mm × 900 mm inspection port on the ceiling board.
(1) An operator aligns the cutter guide 103 according to the joint of the ceiling. (2) The operator attaches the cutter guide 103 to the ceiling board by screwing the plurality of screw holes 63a, 63c, 63d, 63e, 63f. FIG. 9A is a view showing a state in which the cutter guide 103 is attached to the ceiling board (screws are not shown). (3) The operator cuts the ceiling board by moving the cutter 200 while bringing the longitudinal side surface of the blade cover 203 of the cutter 200 into contact with the step 43 of the cutter guide 103. At this time, a cut is made along each of the three sides excluding the side that forms the step non-forming surface E among the sides constituting the outer periphery of the cutter guide 103, and the cuts are not continued. (4) The operator removes the screw tightening of the screw holes 63a, 61c, 63d, and 63f excluding the rotary shaft hole 63e, and rotates the cutter guide 103 by 180 ° around the rotary shaft hole 63e. (5) The operator attaches the cutter guide 103 to the ceiling board by screwing the plurality of screw holes 63a, 61c, 63d, 63f. FIG. 9B is a diagram (a screw is not shown) showing a state in which the cutter guide 103 is rotated with the cutter guide 103 attached to the ceiling board. (6) The operator performs the same operation as (3). (7) The operator cancels the screw tightening of the plurality of screw holes 63a, 63c, 63d, 63e, and 63f, and removes the cutter guide 103 from the ceiling board. (8) An operator uses the cutter 200 to make each incision continuous and provide an opening in the ceiling board.

  As described above, the cutter guide 103 according to the third embodiment is attached to the base plate 13 and the base plate 13 which are rectangular plates each having a predetermined length in the long side and the short side. The handle 23, the long side and the short side are rectangular plates shorter than the base plate 13, respectively, and one side in the longitudinal direction is a side of one side in the longitudinal direction of the base plate. The plate 33 is fixed to the base plate 13 so as to be in the same plane, and includes a plate 33 that forms a step at a position that is inside a predetermined distance from the outer periphery of the base plate 13 except for one side that is the same plane. For this reason, the cutter guide which makes it possible to provide opening of target size in a ceiling board can be obtained.

  In addition, a rotation shaft hole 63e is provided, and the cutter guide 103 is rotated by 180 ° around the rotation shaft hole 63e so that an opening can be provided. As a result, even when a 900 mm × 900 mm inspection port is installed on the ceiling board, it is not necessary to use a square base plate having a side of about 900 mm, and the efficiency of transportation work can be realized. it can. Moreover, reduction of material consumption is realizable.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

11, 12, 13 Base plate 11a, 13a 1st hollow part 11b, 13b 2nd hollow part 11c, 12a Slit 21, 21, 23 for markings Handle 31, 32, 33 Plate 31a, 33a 3rd hollow part 32a 32b Notch portions 41, 42a, 42b, 43 Steps 61, 62, 63a to 63d, 63f Screw hole 63e Screw hole (rotary shaft hole)
70 First slit portion 71 Slit 80 Second slit portion 81 Slit 101, 102, 103 Cutter guide 200 Cutter 201 Main body 202 Blade 203 Blade cover

Claims (7)

A base plate that is a square plate with one side having a predetermined length;
A handle attached to the base plate;
The base plate is a square plate whose length is shorter than the base plate, and is fixed to the base plate so that the sides forming the outer periphery are parallel to the sides forming the outer periphery of the base plate. A plate that forms a step at a position that is a predetermined distance from the inside,
The base plate has slits formed at positions separated by a predetermined distance from the intersection of the two sides in each of two sides orthogonal to each other among the sides constituting the outer periphery of the base plate,
The plate is the width direction on both sides of the slit, features and to Luke Ttagaido to have a notch forming a step positioned at a predetermined distance from said slit.   The cutter guide according to claim 1, wherein the base plate and the plate have a plurality of screw holes that coaxially penetrate the base plate and the plate.   2. The cutter guide according to claim 1, wherein the base plate has marking slits formed at positions at a predetermined distance from an outer periphery of the base plate at four corners of the base plate. A base plate that is a rectangular plate having a predetermined length in each of the long side and the short side;
A handle attached to the base plate;
The long side and the short side are rectangular plates each shorter than the base plate, and the side surface of one side in the longitudinal direction is flush with the side surface of one side in the longitudinal direction of the base plate. A cutter guide comprising: a plate fixed to the base plate and having a step formed at a position where three sides other than the one side which is the same surface are inside a predetermined distance from the outer periphery of the base plate. The base plate and the plate have a plurality of screw holes that pass coaxially through the base plate and the plate, and are the positions of the plurality of screw holes that are the center in the longitudinal direction of the base plate and the plate. The cutter guide according to claim 4 , wherein the screw hole located on the same surface side is a rotation shaft hole. The cutter guide according to claim 1 or 4, wherein the base plate and the plate are formed of one member. The cutter guide according to claim 1 or 4 , wherein each of the base plate and the plate has a hollow portion communicating with each other.

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