Cross-cut ruler

Abstract

This cross-cutting ruler allows the worker to concentrate their grip on the cross-cutting material and stabilize their posture when cutting the overlapping surface of multiple layers of cloth or tape. [Solution] The cross-cutting ruler 1 is formed as a long plate-shaped member having two parallel sides with a surface 10f and a back surface 10r, and includes a first protrusion 11 and a second protrusion 12 on the surface 10f, wherein the first height H1 from the surface 10f to the top of the first protrusion 11 is formed to be higher than the second height H2 from the surface 10f to the top of the second protrusion 12, so that when cutting the joint, the first protrusion 11 is pressed against the single layer left cross E and the second protrusion 12 is pressed against the joint, and the worker can use the ruler 1 to concentrate the force pressing on the joint on the first protrusion 11 and the second protrusion 12 and stabilize the position.

Description

Technical Field

[0001] The present invention relates to a cross-cutting ruler, and more particularly, to a tool used as a guide for a cutter when cutting the excess portion of overlapping crosses.

Background Art

[0002] Conventionally, when joining and attaching two crosses to a wall base at a construction site, the crosses are cut with a cutter in a state where the cross attached from one side and the cross attached from the other side are overlapped. At the time of this cutting, the cutter is guided by a cross-cutting ruler in a state where a backing tape, a cross attached from one side, a cut tape, and a cross attached from the other side are overlapped on the wall base.

[0003] The portion where the crosses attached from one side and the other side are joined together preferably has a state where the two crosses are seamlessly joined in a single layer state. That is, it is necessary to cut the two crosses so that the crosses do not overlap each other or a gap occurs between the crosses and the wall base is visible. At this time, when cutting the cross, it is required to move the cutter blade along the cross-cutting ruler in a posture where the cutter blade is inserted at a right angle to the cross.

[0004] In such a cross-cutting ruler, a technique of providing a step on the surface pressed against the cross is known (for example, see Patent Document 1). In this case, by pressing the high step of the ruler against a single-layer cross and the low step against a plurality of overlapping crosses, the cross before cutting and the cross-cutting ruler can be engaged with each other.

[0005] According to the technology described in Patent Document 1, the step of the cross-cutting ruler is configured to engage with the difference in thickness between a single layer of cloth and multiple layers of overlapping cloth. As a result, the cross-cutting ruler can be pressed against the cloth without tilting due to the difference in thickness. This allows the side of the cross-cutting ruler to be pressed against the cloth so as to be perpendicular to the cutting portion, so that the cutter blade can be inserted perpendicular to the cloth when moving along the cross-cutting ruler. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Utility Model Registration No. 3223330 [Overview of the project] [Problems that the invention aims to solve]

[0007] In the cross-cutting ruler described in Patent Document 1, the entire surface of the ruler is pressed against the cloth when cutting it. In this case, the force applied by the operator is transmitted to the cloth through the entire surface of the ruler, resulting in less pressure being applied to the cloth by the ruler. This led to the problem that the position of the cross-cutting ruler was unstable when the cloth had irregularities or uneven surfaces.

[0008] This invention has been made in view of the above circumstances, and the problem that this invention aims to solve is to provide a cross-cutting ruler that allows the worker to stabilize their posture by concentrating the force they apply to hold down the cloth and increasing the pressure when cutting the overlapping surface of multiple layers of cloth or tape. [Means for solving the problem]

[0009] The following describes the means to solve the above problems.

[0010] (1) A cross-cutting ruler comprising: a substrate formed as a long plate-like member having one face and another face and two parallel sides; a first projection formed on one face of the substrate along one of the two sides; and a second projection formed on one face along the other of the two sides, wherein the first height from the one face to the apex of the first projection is formed to be higher than the second height from the one face to the apex of the second projection.

[0011] (2) The cross-cut ruler according to (1), further comprising: a third projection formed on the other side of the substrate along the other of the two sides; and a fourth projection formed on the other side of the substrate along one of the two sides, wherein the third height from the other side to the apex of the third projection is formed to be higher than the fourth height from the other side to the apex of the fourth projection; and the first dimension, which is the difference between the height from the one side to the apex of the first projection and the height from the one side to the apex of the second projection, and the second dimension, which is the difference between the height from the other side to the apex of the third projection and the height from the other side to the apex of the fourth projection, are formed to be different.

[0012] (3) The cross-cut ruler according to (2), wherein a first mark representing the first dimension is formed on the other surface and a second mark representing the second dimension is formed on the one surface.

[0013] (4) The cross-cut ruler according to (3), wherein the first mark is formed as a groove along the third protruding portion, and the second mark is formed as a groove along the first protruding portion.

[0014] (5) The cross-cut ruler according to (4), wherein the first projection, the second projection, the third projection, and the fourth projection have a rectangular cross-sectional shape perpendicular to the two sides.

[0015] (6) The cross-cut ruler according to (5), wherein the substrate has a handle hole formed through the substrate.

[0016] (7) In the substrate, metal plates are provided on respective side surfaces along the two sides, the cross-cutting template according to (6).

Advantages of the Invention

[0017] According to the cross-cutting template of the present invention, when cutting the overlapping surface of the cross when multiple crosses or tapes are stacked, the operator can stabilize the posture by concentrating the force for pressing the cross and increasing the pressure.

Brief Description of the Drawings

[0018] [Figure 1] (a) and (b) are perspective views showing the front and back surfaces of the cross-cutting template, respectively. [Figure 2] Cross-sectional view taken along the line X-X in Fig. 1(a). [Figure 3] Front view showing the wall and the cross. [Figure 4] Perspective view when the cross-cutting template is in use. [Figure 5] Plan view when the cross-cutting template is in use. [Figure 6] (a) and (b) are perspective view and plan view showing the wall after using the cross-cutting template.

Embodiments for Carrying out the Invention

[0019] First, a cross-cutting template (hereinafter simply referred to as "template") 1 according to an embodiment of the present invention will be described. The template 1 according to this embodiment is used as a guide for a cutter F when cutting in a state where a right cross C attached to a building wall base A from the right side and a left cross E attached from the left side overlap in wallpaper construction at a construction site or the like (see Fig. 4).

[0020] As shown in FIGS. 1(a) and (b), the scale 1 includes a substrate 10 formed as a long plate-like member. The substrate 10 has a front surface 10f which is one surface and a back surface 10r which is the other surface, and is formed with a first side 101 and a second side 102 which are two parallel sides. In the scale 1, rectangular side surfaces are formed at the locations constituting the first side 101 and the second side 102. The scale 1 only needs to be a long plate-like member, and its material and manufacturing method are not limited. For example, it may be made of wood, resin, metal, or a combination thereof.

[0021] As shown in FIGS. 1(a) and (b), the scale 1 includes a first protruding portion 11 formed along the first side 101 on the front surface 10f of the substrate 10, and a second protruding portion 12 formed along the second side 102. Also, as shown in FIG. 2, a first height H1 from the front surface 10f to the apex of the first protruding portion 11 is formed higher than a second height H2 from the front surface 10f to the apex of the second protruding portion 12. In other words, the scale 1 is formed such that the first height H1 and the second height H2 are different. In the present embodiment, the difference between the first height H1 and the second height H2 (hereinafter referred to as "first dimension Hf") is formed to be 1 mm.

[0022] Also, as shown in FIGS. 1(a) and (b), the scale 1 includes a third protruding portion 13 formed along the second side 102 on the back surface 10r of the substrate 10, and a fourth protruding portion 14 formed along the first side 101 on the back surface 10r. Also, as shown in FIG. 2, a third height H3 from the back surface 10r to the apex of the third protruding portion 13 is formed higher than a fourth height H4 from the back surface 10r to the apex of the fourth protruding portion 14. In other words, the scale 1 is formed such that the third height H3 and the fourth height H4 are different. In the present embodiment, the difference between the third height H3 and the fourth height H4 (hereinafter referred to as "second dimension Hr") is formed to be 2 mm.

[0023] Using Figures 3 and 4, the cutting of wallpaper in construction sites and the like in this embodiment will be explained. In the cutting of wallpaper according to this embodiment, the underlay tape B, right-side wallpaper C, cutting tape D, and left-side wallpaper E are layered in order on the surface of the wall substrate A, and the cutting is performed at the point where the right-side wallpaper C and the left-side wallpaper E overlap. At this time, the blade of the cutter F is slid along the imaginary cutting line L on the left-side wallpaper E.

[0024] In this embodiment, underlay tape B is used to protect the wall substrate A and is removed completely after the wallpaper is cut. Similarly, cut tape D is used to prevent adhesive from getting on the overlapping area of ​​the right wallpaper C and left wallpaper E (hereinafter referred to as "the two wallpapers C and E") and is removed completely after the wallpaper is cut.

[0025] In this embodiment, the portion where two pieces of cloth C and E are overlapped in order to cut and join them together is referred to as the "joint portion." By cutting the joint portion along the cutting line L, the two pieces of cloth C and E can be joined together in a single layer with no gaps and the seams aligned, as shown in Figures 6(a) and (b). At this time, it is necessary to move the blade of the cutter F along the ruler 1 with the blade inserted perpendicular to the cloth so that the two pieces of cloth C and E do not overlap or separate.

[0026] In the cross-cutting according to this embodiment, as shown in Figure 5, a step of about 1 mm is created between the joint portion where the underlay tape B, right cross C, cut tape D, and left cross E are layered on top of each other, and the single layer left cross E.

[0027] As shown in Figure 5, when cutting the joint portion using the ruler 1 according to this embodiment, the left single layer cloth E is pressed down with the first projection 11, and the joint portion is pressed down with the second projection 12. At this time, the first dimension Hf and the step difference between the joint portion and the left single layer cloth E are approximately coincidental. Therefore, the ruler 1 can contact the left single layer cloth E and the joint portion without tilting.

[0028] In this embodiment, the case where the ruler 1 is held in the left hand and the cutter F is held in the right hand to perform a cross cut is described. However, the ruler 1 can also be used in the opposite case, where the ruler 1 is held in the right hand and the cutter F is held in the left hand to perform a cross cut. In this case, the single-layer right cross C is held down with the first protruding part 11, and the joint part is held down with the second protruding part 12.

[0029] As described above, according to this embodiment, by pressing the ruler 1 against the joint in a position parallel to it, the side surface constituting the second side 102 is pressed against the joint so as to be perpendicular to the cutting portion of the cross. Then, by sliding the blade of the cutter F along the second side 102, the blade of the cutter F can be inserted perpendicular to the joint, and the joint can be cut accurately and in a straight line.

[0030] At this time, the blade of cutter F is inserted perpendicular to the joint, and the joint slides along the straight cutting line L, so that when the right cross C and left cross E are attached, the right cross C and left cross E will be joined together seamlessly on the wall substrate A in a single layer. (See Figures 6(a) and (b).) Note that when attaching the right cross C and left cross E after cutting the joint, the underlay tape B and cutting tape D are all removed.

[0031] As shown in Figure 5, according to the ruler 1 of this embodiment, when a worker presses the ruler 1 against the joint, the tip of the first projection 11 and the tip of the second projection 12 make limited contact with the left cross E and the joint, respectively, while applying force in a direction that pushes toward the wall substrate A. At this time, the force pressing the left cross E and the joint of the ruler 1 is concentrated on the first projection 11 and the second projection 12.

[0032] According to the ruler 1 of this embodiment, the contact surface between the ruler 1 and the left cross E and the joint can be limited compared to pressing down so that the entire surface of the ruler 1 is in contact. This allows the pressure that the ruler 1 applies to the joint to be increased, thereby stabilizing the position of the ruler 1. Thus, according to the ruler 1 of this embodiment, when cutting the joint, the force applied by the worker pressing the ruler 1 is concentrated on the first protrusion 11 and the second protrusion 12 to increase the pressure, thereby stabilizing the position of the ruler 1 relative to the left cross E and the joint.

[0033] Furthermore, even if the surfaces of the right cross C and left cross E are uneven, the ruler 1 only makes limited contact with the left cross E and the joint. Therefore, the ruler 1 is less likely to lose its shape against the unevenness of the left cross E and the joint, and the force applied can be concentrated to stabilize its position.

[0034] The third projection 13 and the fourth projection 14 on the back surface 10r of the ruler 1 according to this embodiment can be used when there is a step of about 2 mm between the joint portion where the underlay tape B, right cross C, cut tape D, and left cross E are layered and the single layer left cross E. That is, the single layer left cross E is pressed down with the third projection 13, and the joint portion is pressed down with the fourth projection 14. At this time, the second dimension Hr and the step between the joint portion and the single layer left cross E are approximately coincidental. Therefore, the ruler 1 can contact the left cross E and the joint portion without tilting.

[0035] In this embodiment as well, similar to the case where the first protrusion 11 and the second protrusion 12 on the surface 10f are used, the ruler 1 is pressed against the joint in a position parallel to the joint so that the side surface constituting the first side 101 is perpendicular to the cutting portion of the cross. Then, by sliding the blade of the cutter F along the first side 101, the blade of the cutter F can be inserted perpendicular to the joint, and the joint can be cut accurately and linearly.

[0036] According to the ruler 1 of this embodiment, when a worker presses the back surface 10r of the ruler 1 against the joint, the tip of the third projection 13 and the tip of the fourth projection 14 make limited contact with the left cross E and the joint, respectively, while applying force in a direction that pushes toward the wall substrate A. At this time, the force with which the ruler 1 pushes toward the left cross E is concentrated on the third projection 13 and the fourth projection 14. In this way, by concentrating the force with which the worker presses the ruler 1 against the third projection 13 and the fourth projection 14 and increasing the pressure, the posture of the ruler 1 can be stabilized relative to the left cross E and the joint.

[0037] As described above, Ruler 1 is equipped with protruding parts on each of its front surface 10f and back surface 10r that press down on the left cross E (referring to the first protruding part 11 on the front surface 10f and the third protruding part 13 on the back surface 10r) and protruding parts that press down on the joint (referring to the second protruding part 12 on the front surface 10f and the fourth protruding part 14 on the back surface 10r). Ruler 1 can be used in the same way as a ruler to guide the cutting surface of the cross while maintaining a stable posture even when the front surface 10f and back surface 10r are turned over.

[0038] Furthermore, in the substrate 10 according to this embodiment, by providing metal plates on each side along the first side 101 and the second side 102, it is possible to suppress damage to the ruler 1 by the blade of the cutter F. In addition, since the blade of the cutter F can be applied more firmly to the side of the metal plate compared to wood or resin, it is possible to make it less likely for the blade of the cutter F to tilt on the side where the metal plate is provided.

[0039] As shown in Figure 2, according to the ruler 1 of this embodiment, the first dimension Hf, which is the difference between the first height H1 and the second height H2, and the second dimension Hr, which is the difference between the third height H3 and the fourth height H4, are formed differently.

[0040] In wallpaper installation at construction sites, the joint area typically has a step of about 1 mm from the single layer of the left-side wallpaper E, due to the thickness of the underlayment tape B, the right-side wallpaper C, the cut tape D, and the left-side wallpaper E. However, some of the right-side wallpaper C, left-side wallpaper E, underlayment tape B, and cut tape D are made of thicker materials, and when thicker materials are used, the joint area may have a step of about 2 mm from the single layer of the left-side wallpaper E.

[0041] In ruler 1, the size of the first dimension Hf is 1 mm and the second dimension Hr is 2 mm. When the step between the joint and the left cross E of the single layer is about 1 mm, the first dimension Hf engages with the step, so that ruler 1 can stabilize its position by pressing down on the left cross E of the single layer with the first protrusion 11 and on the joint with the second protrusion 12.

[0042] In this way, ruler 1 can perform cross cutting using the appropriate surface depending on whether the step difference between the joint section, where the underlay tape B, right cross C, cut tape D, and left cross E are layered, and the single layer left cross E is approximately 1 mm or approximately 2 mm. In other words, there is no need to change ruler 1 for each step difference between the joint section and the single layer left cross E, making it possible to proceed with the work efficiently.

[0043] Furthermore, when the step difference between the joint and the single-layer left-side cross E is about 2 mm, the second dimension Hr engages with the step difference, allowing the ruler 1 to hold down the single-layer left-side cross E with the third projection 13 and the joint with the fourth projection 14, thereby stabilizing the position of the ruler 1. In other words, by having a first dimension Hf and a second dimension Hr of different sizes, the size of the step difference from the joint to the single-layer left-side cross E can be switched, and the surface that engages with the size of the first dimension Hf or the second dimension Hr can be reversed and used interchangeably. This ensures that the ruler 1 maintains a stable position when cutting the cross, whether the underlay tape B, right-side cross C, cut tape D, and left-side cross E are made of common materials or thick materials.

[0044] As shown in Figures 1(a) and (b), according to the ruler 1 of this embodiment, a first mark 15 representing the first dimension Hf is formed on the back surface 10r, and a second mark 16 representing the second dimension Hr is formed on the front surface 10f. Therefore, when the ruler 1 is held in the hand for use, the worker can see the first mark 15 on the back surface 10r or the second mark 16 on the front surface 10f. For example, when using the ruler by engaging the first dimension Hf with the left side of the single layer cloth E and the step in the joint, the worker can see the first mark 15 on the back surface 10r, press the ruler 1 against the left side of the cloth E with the first mark 15 facing the worker, and hold the ruler 1 in place by engaging the first dimension Hf on the front surface 10f with the left side of the single layer cloth E and the step in the joint.

[0045] For example, when using the ruler by engaging the second dimension Hr with the left-side cross E of the single layer and the step at the joint, the worker can see the second mark 16 on the surface 10f, press the ruler 1 against the left-side cross E with the second mark 16 facing the worker, and then hold the ruler 1 in place by engaging the second dimension Hr on the back surface 10r with the left-side cross E of the single layer and the step at the joint.

[0046] Thus, the ruler 1 according to this embodiment has a first dimension Hf and a second dimension Hr, and the first mark 15 representing the first dimension Hf and the second mark 16 representing the second dimension Hr are different marks, so that when using the ruler 1, the user can look at the first mark 15 and the second mark 16 to confirm which side to use. At this time, the first mark 15 is formed on the back surface 10r and the second mark 16 is formed on the front surface 10f, and it is sufficient that they are formed in a shape and color that can be recognized as marks. For example, they may be in the shape of numbers or symbols, or the marks on the front surface 10f and the back surface 10r of the ruler 1 may be different colors.

[0047] As shown in Figures 1(a) and (b), in this embodiment, the first mark 15 is formed as a single line-shaped groove along the tip of the third protruding portion 13, and the second mark 16 is formed as two line-shaped grooves along the tip of the first protruding portion 11. That is, the first mark 15 and the second mark 16 are formed as line-shaped grooves that extend across one surface parallel to the tip of the first protruding portion 11 or the tip of the third protruding portion 13 of the ruler 1.

[0048] At this time, the worker can easily confirm the number of grooves by touching the first mark 15 or the second mark 16 formed on the first protrusion 11 or the third protrusion 13. This makes it easier to touch and confirm which side of the ruler 1 to use when taking it out, and also makes it possible to distinguish which side of the ruler 1 to use by touching it when cutting cloth in a dark environment.

[0049] As shown in Figure 2, according to the ruler 1 of this embodiment, the first projection 11, the second projection 12, the third projection 13, and the fourth projection 14 are formed with a rectangular cross-sectional shape perpendicular to the first side 101 and the second side 102. That is, as shown in Figure 5, when the first projection 11 and the second projection 12 come into contact with the single layer left cross E and the joint of the cross, the first projection 11 and the second projection 12 come into contact with the single layer left cross E and the joint not at a point but over a surface. Compared to a ruler 1 in which the entire surface of the board is pressed against the cross, the ruler 1 of this embodiment can concentrate the force pressing against the cross and increase the pressure by having the first projection 11 and the second projection 12. On the other hand, because the first projection 11 and the second projection 12 come into contact with the single layer left cross E and the joint over a surface, the pressure on the single layer left cross E and the joint is less likely to become large, and the effect of damage to the single layer left cross E due to contact can be reduced. For example, if a worker presses ruler 1 against the left-side cross E of the single layer and the joint, no mark will be left on the left-side cross E.

[0050] As shown in Figures 1(a) and (b), the substrate 10 has handle holes 17 that penetrate through the substrate 10. In this embodiment, the handle holes 17 are formed in the substrate 10 as two through holes, allowing the ruler 1 to be grasped by placing fingers on either the front surface 10f or the back surface 10r. As shown in Figure 4, when using the ruler 1 as a guide for the cutting surface to cut the cloth with the cutter F, the ruler 1 can be held down by placing fingers on the handle holes 17, allowing force to be applied to the ruler 1 without interfering with the insertion of the cutter blade F. As in this embodiment, since the handle holes 17 are two through holes located at the target position, there is no difference in how they are used whether the front surface 10f or the back surface 10r is used, and they can be used from either side. [Explanation of Symbols]

[0051] 1 Cross-cut ruler 10 circuit boards 10f front 10r back 11 First protrusion 12 Second protrusion 13 Third protrusion 14 Fourth protrusion 15 First landmark 16 Second landmark 17 Handle hole 101 First side 102 Second side A Wall base B Underlay tape C Right side cross D Cut tape E Left cross F Cutter H1 First height H2 Second height H3 Third height H4 Fourth height Hf is the first dimension, and Hr is the second dimension. L cutting line

Claims

1. A substrate formed as a long, plate-like member having one surface and another surface, and having two parallel sides, A first protruding portion formed along one of the two sides on one surface of the substrate, The surface comprises a second projection formed along the other of the two sides, A cross-cut ruler wherein the first height from the first surface to the apex of the first projection is formed to be higher than the second height from the first surface to the apex of the second projection.

2. A third protruding portion formed on the other side of the substrate along the other of the two sides, The other surface comprises a fourth projection formed along one of the two sides, The third height from the other surface to the apex of the third projection is formed to be higher than the fourth height from the other surface to the apex of the fourth projection. The first dimension is the difference between the first height and the second height, The cross-cut ruler according to claim 1, wherein the second dimension, which is the difference between the third height and the fourth height, is formed differently.

3. A first mark representing the first dimension is formed on the other surface. The cross-cut ruler according to claim 2, wherein a second mark representing the second dimension is formed on the aforementioned surface.

4. The cross-cut ruler according to claim 3, wherein the first mark is formed as a groove along the third protruding portion, and the second mark is formed as a groove along the first protruding portion.

5. The cross-cutting ruler according to claim 4, wherein the first projection, the second projection, the third projection, and the fourth projection have a rectangular cross-sectional shape perpendicular to the two sides.

6. The cross-cut ruler according to claim 5, wherein a handle hole is formed in the substrate that penetrates the substrate.

7. The cross-cut ruler according to claim 6, wherein a metal plate is provided on each side surface along the two sides of the substrate.

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