Marking jigs and marking methods

Abstract

To solve problems of variations in marking accuracy occurring due to an operator's skill and work permission determined depending on a weather as a wet condition of an attaching surface prohibits work, and the problems of increase in the number of steps as a conventional method requires a plurality of operators and process delay when enough operators are not collected.SOLUTION: A marking fixture comprises: a quadrant or semicircular substrate; a center hole provided near the quadrant or semicircular center of the substrate; and at least two marking holes for attaching an abbreviation in a tower clock provided at each prescribed angle about the center hole. A marking method comprises: aligning the center hole of the marking fixture with the center of the tower clock to install the marking fixture so as to set one of straight parts thereof to be horizontal using a level; putting a mark on the attaching wall surface of the tower clock in accordance with the marking hole; and rotating the marking fixture about the center hole to repeat the mark-putting work.SELECTED DRAWING: Figure 2

Description

Technical Field

[0005]

[0001] Embodiments of the present invention relate to a tool for ink marking and an ink marking method.

Background Art

[0002] In a conventional construction method for attaching abbreviations of tower clocks, a template corresponding to the actual size of the tower clock is directly pasted onto the wall surface corresponding to the attachment location of the abbreviations of the tower clock with a curing tape or the like, and ink marking is performed. Also, as an ink marking tool, a tool (Patent Document 1, Patent Document 2) in which arc-shaped or linear holes are formed in the ink marking tool and ink marking is performed along these holes is also known.

Prior Art Documents

[0006] A marking jig comprising a quarter-circular or semi-circular substrate, a central hole provided near the center of the quarter-circle or semi-circular portion of the substrate, and at least two marking holes for mounting abbreviations on a tower clock, provided radially at predetermined angles from the central hole; and a marking method comprising aligning the central hole of the marking jig with the center of the tower clock, setting the marking jig using a spirit level so that one of its straight sections is horizontal, marking the wall surface on which the tower clock is mounted according to the marking holes, and repeating the marking work by rotating the marking jig with respect to the central hole. [Brief explanation of the drawing]

[0007] [Figure 1] A schematic plan view of the tower clock. [Figure 2] A plan view showing an example of the configuration of the marking jig 10 of the first embodiment. [Figure 3] A plan view showing a modified configuration of the marking jig 10 of the first embodiment. [Figure 4] A flowchart showing an example of a method for installing abbreviated characters using the marking jig 10 of the first embodiment. [Figure 5] A schematic diagram showing the details of how to use the marking jig 10 in the first embodiment for installing abbreviated characters. [Figure 6] Plan and cross-sectional views showing the details of the installation of the abbreviated characters. [Figure 7] A plan view showing an example of the configuration of the marking jig 20 of the second embodiment. [Figure 8] A plan view showing an example of the configuration of the marking jig 30 of the third embodiment. [Modes for carrying out the invention]

[0008] The following describes embodiments for carrying out the invention with reference to the drawings.

[0009] In this embodiment, the tower clock, as shown in Figure 1, has a building wall 101 or the like as its dial, with abbreviations 102 indicating the time directly installed on the wall 101 or the like. The hour hand (short hand) 103 and minute hand (long hand) 104 of the clock rotate around the center 105 of the tower clock. Since such tower clocks need to be visible from a distance and easily seen from a wide area, they are generally installed in high places such as clock towers and clock platforms, and outdoors. The diameter D of the position where the abbreviations 102 are installed is extremely large, for example, 1500 mm or 2000 mm.

[0010] (First Embodiment) An example of a marking jig according to the first embodiment is shown in Figure 2. The marking jig 10 of the first embodiment shown in Figure 2 is used for marking work to determine the position for installing the abbreviation 102 of the tower clock as shown in Figure 1. If a marking template corresponding to the actual size of the tower clock is used as in the conventional method, the diameter of the template would need to be larger than 2000 mm if the diameter of the tower clock is 2000 mm. However, in the first embodiment, the template is composed of a base plate 11 that is a quarter-circle, which is about 1 / 4 the area of ​​the entire tower clock where the abbreviation 102 of the tower clock is placed. Therefore, the radius of the base plate 11 is approximately 1000 mm.

[0011] Here, in the first embodiment, a quadrant refers to one of the shapes that includes the center of a circle when the circle is divided into four parts by two mutually orthogonal lines. Furthermore, a precise quadrant, which is one of the four parts of a circle divided by mutually orthogonal diameters, is also included in the definition of a quadrant in the first embodiment.

[0012] This substrate 11 is the main component of the marking jig 10 of the first embodiment, which marks the positions for installing the abbreviated characters of the tower clock shown in Figure 1. The substrate 11 is preferably made of a metal such as aluminum, which is unaffected by weather and does not deteriorate or deform due to sunlight or temperature. However, other materials such as resin, fiber, or wood are also applicable. The substrate 11 has a quadrant shape as shown in Figure 2, and this shape allows it to exhibit the effects of this embodiment, which will be described later.

[0013] Furthermore, tower clocks are large clocks with diameters of 1500mm or 2000mm. Therefore, the thicker the base plate, the heavier it becomes, which can be heavy work when mounting it to the building wall or when performing the rotation operation described later. It is preferable to select the material considering this weight and to construct it with a thickness of, for example, 2mm.

[0014] The straight sections 11a and 11b are mutually perpendicular straight lines, and as shown in Figure 2, they are the straight edges of the substrate 11. When the straight sections 11a and 11b correspond to the radius of the substrate 11, the substrate 11 becomes an exact quarter circle. However, the substrate 11 is not limited to an exact quarter circle; it may also be a circular plate divided by perpendicular straight lines parallel to the orthogonal radii of the circle.

[0015] The central hole 12 is a through-hole located near the center 11c of the quadrant forming the quarter circle of the substrate 11 (near the center of the quadrant). When the marking jig 10 of the first embodiment is used, the central hole 12 is aligned with the center position of the tower clock. Here, the center 11c of the quadrant refers to the intersection of the straight section 11a and the straight section 11b. During marking work, a bolt is passed through this central hole 12 to fix the marking jig 10 of the first embodiment to the center position of the tower clock, and it is used as the center of rotation when the marking jig is rotated. As described above, the central hole 12 is used not only for fixing but also as a center of rotation, so it is desirable that it be circular. The diameter of the central hole 12 needs to be selected to be suitable for the bolt used when fixing the marking jig 10 of the first embodiment.

[0016] The ink ejection holes 13 are through holes for ink ejection for attaching the abbreviations of tower clocks that are concentric with the central hole 12, and four of them are arranged radially according to the positions of the abbreviations of the tower clocks with the central hole 12 as the center. Depending on the size of the abbreviation, at least one ink ejection hole 13 is arranged for each abbreviation. In FIG. 2, an example is shown in which two ink ejection holes 13 are provided for each abbreviation. The angles at which each abbreviation is arranged with the central hole 12 as the center vary depending on whether "hour" or "minute" is selected as the abbreviation. When "hour" is selected as shown in FIG. 2, each abbreviation has an angle of every 30 degrees with the central hole 12 as the center. Therefore, each ink ejection hole 13 in each abbreviation is also provided radially at every 30 degrees, which is a predetermined angle, with the central hole 12 as the center. The dimension of the ink ejection hole 13 from the central hole 12 can be applied to any dimension according to the size of the tower clock. In this embodiment, the shape of the ink ejection hole 13 is circular, but other shapes such as rectangular, star-shaped, cross-shaped, etc., as long as the mark can be recognized, can be used as alternatives.

[0017] Note that FIG. 3 is a modified example of FIG. 2. In FIG. 2, the substrate 11 is quarter-circular, but in FIG. 3, it is semi-circular. As will be described later, since the ink ejection jig 10 of the first embodiment in FIG. 2 is quarter-circular, in order to perform ink ejection for all the abbreviations of the tower clock, it is necessary to perform three rotations for ink ejection. However, in the modified example shown in FIG. 3, since it is semi-circular, although the shape is larger, all the abbreviations of the tower clock can be inked by only one rotation. Also, the semi-circle shown in FIG. 3 may be formed by dividing a circular plate with a diameter passing through the center of the circle, and the central hole 12 may be formed near the center of the semi-circle forming the semi-circle, or it may be divided by a straight line portion 11d parallel to the diameter passing through the center of the circle, and the central hole 12 may be formed at the center of the circle. [[ID=⑤]] [[ID=⑥]]

[0018] [[ID=⑦]] [[ID=⑧]]Next, referring to FIGS. 4 and 5, an example of a method for installing a tower clock using the ink ejection jig 10 of the first embodiment will be described. [[ID=⑨]] [[ID=⑩]]

[0019] [[ID=⑪]] [[ID=⑫]]First, a central hole of the tower clock is provided on the wall surface where the tower clock is to be installed in advance (S11). [[ID=⑬]] [[ID=⑭]]

[0020] [[ID=⑮]] Next, the central hole of the tower clock is aligned with the central hole 12 of the marking jig 10 of the first embodiment, and a fixing bolt (not shown) is passed through from the side of the marking jig 10 of the first embodiment (S12). In this state, the angle of the marking jig 10 of the first embodiment is adjusted using a spirit level (not shown), which is separate from the marking jig 10 of the first embodiment, so that the straight section 11a is horizontal, and then it is fixed with a nut from the back of the wall (S13).

[0021] After securing with the nuts mentioned above, the straight section 11a is reconfirmed to be horizontal using a separate spirit level (not shown) (S14). This is to prevent the base plate 11 from rotating when the nuts are tightened, which could cause the marking position to shift.

[0022] In this state, mark the positions of the marking holes 13 for installing all the abbreviations on the wall where the tower clock will be installed using a marking pen (S15).

[0023] If all marking is not yet complete, loosen the nut on the back of the wall (No. S16), rotate the marking jig 10 of the first embodiment 90 degrees clockwise with respect to the central hole 12 (S19), rotate it sequentially to the positions shown in Figure 5(b), (c), and (d), adjust the angle of the marking jig using the above-mentioned separate (not shown) spirit level so that the other straight section 11b is horizontal, and fix it with the nut from the back of the wall (S13).

[0024] After securing the nut again, the straight section 11b is reconfirmed to be horizontal using the separate spirit level (S14). This is to prevent the base plate 11 from rotating when the nut is tightened, which could cause the marking position to shift.

[0025] As shown in Figures 5(a) to 5(d), if the marking jig 10 of the first embodiment described above is rotated 90 degrees and the marking holes are marked three times each, the marking of all the abbreviated parts of the tower clock will be completed (Yes in S16).

[0026] Once all work is complete, remove the bolts, nuts, and the marking jig 10 of the first embodiment (S17).

[0027] The lettering is installed at the marked positions created by the above procedure (S18). Figure 6 shows the installation method for rectangular lettering. Figure 6(a) is a plan view, and Figure 6(b) is a cross-sectional view. The rectangular lettering is divided into a wall-side member A and a cover member B. First, the wall-side member A is fixed to the back of the wall 61 by passing a bolt 62 through it and securing it with a nut 63. Once the wall-side member A is fixed, the cover member B is placed over the wall-side member A, and the cover member B is fixed to the wall-side member A with screws. The installation of the lettering is completed by fixing all the lettering in this manner. After that, the tower clock installation is completed by installing the clock's drive unit and the hour hand (short hand) and minute hand (long hand).

[0028] According to this embodiment, the following effects can be obtained.

[0029] This method solves the problem of inconsistent marking accuracy caused by the shifting of the template, which is a common issue when using a template in the conventional method. For example, in this embodiment, the marking jig 10 of the first embodiment can be fixed by bolting through the central hole 12, which provides a more secure fixation than the conventional method of fixing the template with masking tape.

[0030] This method solves the problem that arises when using a template that is the actual size of the tower clock, which is the case with conventional methods, as the feasibility of the work depends on the weather. For example, since the marking jig 10 of the first embodiment is made of metal, the effect of rain on the marking jig 10 of the first embodiment is smaller than when a template is used.

[0031] This method solves the problem of requiring multiple workers when using a template that is the same size as the actual tower clock, as is the case with conventional methods. For example, in this embodiment, the size of the marking jig 10 in the first embodiment is smaller than in the conventional method that uses a template that is the same size as the actual tower clock, so it can be handled by fewer workers than before. Therefore, concerns about increased man-hours and process delays can be eliminated.

[0032] Furthermore, the substrate 11 can also be a semicircular shape as shown in Figure 3. Here, a semicircle in the first embodiment refers to one of the shapes that includes the center of a circle when the circle is divided into two parts by a single straight line. This also includes a precise semicircle which is one of the two parts when the circle is divided by a single diameter.

[0033] Here, in Figure 3, which is a modified example of the first embodiment, the center of the circle is the midpoint of the straight section 11d, and the central hole 12 is on a straight line perpendicular to the straight section 11d that passes through the midpoint of the straight section 11d, and is in the vicinity of the midpoint of the straight section 11d, which is the center of the circle.

[0034] The effect of using a semicircle is the same as that of a quarter circle, but in the case of a semicircle, the number of rotations required for marking out all abbreviated characters can be reduced to one, compared to three rotations for a quarter circle.

[0035] (Second embodiment) An example of a marking jig according to the second embodiment is shown in Figure 7.

[0036] The marking jig 20 of the second embodiment differs from that of the first embodiment in some aspects of its configuration. The jig according to this embodiment will be described with reference to Figure 7. In Figure 7, components equivalent to those of the marking jig 10 of the first embodiment are given the same reference numerals as in the first embodiment, and their description is omitted.

[0037] The marking jig 20 of the second embodiment has a base plate 11, straight sections 11a and 11b, a central hole 12, an opening 23, and a scale 24.

[0038] The openings 23 are openings formed continuously in a radial direction from the central hole 12, and are through-holes for marking out the abbreviations of the tower clock that are concentric with the central hole 12. As shown in Figure 7, they are arranged in a long, narrow shape radially from the central hole 12 according to the position of the abbreviations of the tower clock. The angle of each abbreviation with respect to the central hole 12 will differ depending on whether "hours" or "minutes" are selected as the abbreviations. If "hours" are selected as the abbreviations, each abbreviation will be at an angle of 30 degrees around the central hole 12, and therefore each opening 23 for each abbreviation will also be at an angle of 30 degrees around the central hole 12. The shape of the openings 23 can be any shape that allows for marking out, for example, an elliptical shape, a rectangular shape, or a continuous hole shape can be selected.

[0039] The scale 24 is installed on the long side of each opening 23 so that the distance from the central hole 12 can be measured, making it easy to determine the marking position. The scale unit can be set to any unit, such as meters, centimeters, millimeters, or inches. The displayed scale can be a line display, a numerical display, or a combination of both; any display method that allows the distance from the central hole 12 to be recognized is applicable.

[0040] Based on the above, the following effects can be obtained according to this embodiment.

[0041] In addition to the advantages of using the marking jig 10 of the first embodiment, the presence of the opening 23 allows marking to be done at any desired position on site. Therefore, with the marking jig 30 of the third embodiment, marking can be done not only for tower clocks of a specific size, but also for tower clocks of various sizes. Furthermore, since scales are installed on the long side of each opening 23, the marking position can be easily and accurately determined, enabling more accurate marking in a shorter time.

[0042] (Third embodiment) An example of a marking jig according to the third embodiment is shown in Figure 8.

[0043] The marking jig 30 of the third embodiment differs from that of the first embodiment in some aspects of its configuration. The jig according to this embodiment will be described with reference to Figure 8. In Figure 8, components equivalent to those of the marking jig 10 of the first embodiment are given the same reference numerals as in the first embodiment, and their description is omitted.

[0044] The marking jig 30 of the third embodiment includes a base plate 11, straight sections 11a and 11b, a central hole 12, a marking hole 13, a spirit level 34a, and a spirit level 34b.

[0045] The spirit levels 34a and 34b are installed on the base plate 11 to confirm whether the marking jig 30 of the third embodiment is correctly installed horizontally with respect to the tower clock. Spirit level 34a is installed near the straight section 11a so that it can be confirmed that the straight section 11a is horizontal. On the other hand, spirit level 34b is installed near the straight section 11b so that it can be confirmed that the straight section 11b is horizontal.

[0046] Next, an example of a marking method using the marking jig 30 of the third embodiment will be described. Note that the marking method according to this embodiment differs in some aspects of its configuration from the marking method using the marking jig 10 of the first embodiment. The configuration equivalent to that of the marking method using the marking jig 10 of the first embodiment will not be explained.

[0047] Since the marking jig 30 of the third embodiment has spirit levels 34a and 34b, it is possible to confirm that the straight sections 11a and 11b are horizontal using these spirit levels without using a separate spirit level. Since the marking jig 30 of the third embodiment is used by rotating it every 90 degrees, it is possible to alternately confirm that the straight sections 11a and 11b are horizontal using the spirit levels 34a and 34b each time the marking jig 30 of the third embodiment is rotated 90 degrees. In other words, when the marking jig 30 of the third embodiment is fixed in the state shown in Figures 5(a) and (c), horizontality should be confirmed using the spirit level 34a, and when it is fixed in the state shown in Figures 5(b) and (d), horizontality should be confirmed using the spirit level 34b.

[0048] Based on the above, the following effects can be obtained according to this embodiment.

[0049] In addition to the advantages of using the marking jig 10 of the first embodiment, the marking jig 30 of the third embodiment itself has spirit levels 34a and 34b, eliminating the need to carry a spirit level when performing marking, thus reducing the number of items to carry during work.

[0050] Since the spirit levels 34a and 34b are mounted on the marking jig 30 of the third embodiment, they do not shift relative to the marking jig 30 of the third embodiment, enabling more accurate marking. Furthermore, because two spirit levels are installed, the work of rotating and fixing the marking jig 10 of the first embodiment can be done simply and quickly. In addition, since there is no need to use a separate spirit level, workers can perform marking work on tower clocks, which is work done at height, safely.

[0051] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0052] 10... Marking jig according to the first embodiment, 11... Base plate, 11a, 11b... Straight section, 12... Center hole, 13... Marking hole, 20... Marking jig according to the second embodiment, 23... Opening, 24... Scale, 30... Marking jig according to the third embodiment, 34a, 34b... Level, 61... Wall surface, 62... Bolt, 63... Nut, A... Wall side member, B... Cover member, D... Diameter of the position where the abbreviation is installed, 101... Wall surface, 102... Abbreviation, 103... Hour hand (short hand), 104... Minute hand (long hand), 105... Tower clock center

Claims

1. A quarter-circular or semi-circular substrate, A central hole provided near the center of the quarter circle or semicircle of the substrate, A marking jig comprising at least two marking holes for attaching abbreviations to a tower clock, which are arranged radially at predetermined angles from the central hole.

2. The marking jig according to claim 1, wherein the predetermined angle is 30 degrees.

3. The marking jig according to claim 1 or claim 2, wherein the marking hole is an opening formed extending radially from the central hole.

4. The marking jig according to claim 3, wherein a scale capable of measuring the distance from the central hole is formed near the opening.

5. The marking jig according to claim 1 or claim 2, wherein at least one spirit level is provided on the substrate.

6. The marking jig according to claim 5, wherein the substrate is a quarter-circle, and one level is provided near each of the orthogonal straight sections of the substrate.

7. A marking method comprising: a quarter-circular or semi-circular substrate; a central hole provided near the center of the quarter-circle or semi-circular portion of the substrate; and at least two marking holes provided radially at predetermined angles from the central hole for mounting abbreviations on a tower clock; aligning the central hole of the marking jig with the center of the tower clock; using a spirit level to position the marking jig so that one of its straight sections is horizontal; marking the wall surface on which the tower clock is mounted according to the marking holes; and repeating the marking process by rotating the marking jig with respect to the central hole.

8. The marking method according to claim 7, wherein the marking jig is the marking jig described in claim 3.

9. The marking jig is the marking jig described in claim 5, and the marking method described in claim 7 utilizes a spirit level installed in the marking jig.

Images