Sleeve marking jig

Abstract

To provide a sleeve marking jig capable of quickly and easily performing sleeve marking work.SOLUTION: The sleeve marking jig 1 used for the marking work of the sleeve includes a pair of jig bodies 1020 and which are detachable from each other, and the jig bodies 1020 and have a first arm part 1121 and a second arm part 1222 connected in an L shape via a bent part 1323. A plurality of slits 11a, 21a; 12a, 22a are formed along edges of the first arm portions 11, 21 and the second arm portions 12, 22, respectively; The pair of jig bodies 10,20 are arranged so that the first arm parts 11,21 face each other and the second arm parts 12,22 face each other, and the respective slits of the adjacent first arm part 11,21 and second arm part 12,22 are selected from the plurality of slits and engaged with each other, whereby a marking area corresponding to the selected slit is formed inside.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sleeve marking jig used in marking a sleeve. [Background technology]

[0002] Conventional sleeve marking work typically involves marking the center line of the sleeve on poured concrete using a convex or similar tool, then drawing a frame the same size as the outer shape of the sleeve, and then painting the inside of the frame with a spray paint or similar. This painting work requires the construction of an enclosure using cardboard or similar beforehand to prevent paint from splashing outside the frame, but this work is time-consuming.

[0003] As a conventional jig used for marking work, Patent Document 1 discloses a pillar-shaped marking jig that can be placed at the location where the pillar is to be constructed to mark out a rectangle of any size by sliding the sliding fittings that make up each side relative to the corner fittings placed at the four corners. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Publication number 8-1816 Summary of the Invention [Problem to be solved by the invention]

[0005] When marking with the above-mentioned pillar-shaped marking jig using a spray, paint gradually accumulates in the sliding area between the corner fitting and the slide fitting, which can hinder the smooth sliding of the slide fitting and make it difficult to use.

[0006] In addition, the above-mentioned pillar-shaped marking jig has a configuration in which the four sliding fittings are detachable from the four corner fittings, so it can be disassembled for transportation, but there was a problem in that assembly work on site could easily become complicated.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a sleeve marking tool that allows sleeve marking work to be carried out quickly and easily. [Means for solving the problem]

[0008] The object of the present invention is achieved by a sleeve marking jig used in marking sleeves, which comprises a pair of jig bodies that are detachable from each other, wherein the jig body has a first arm and a second arm connected in an L-shape via a bent portion, and wherein the first arm and the second arm each have a plurality of slits formed along their edges, and the pair of jig bodies are arranged so that the first arms and the second arms face each other, and the slits of the adjacent first arms and second arms are selected from a plurality of slits and engaged with each other, thereby forming a marking area inside the sleeve marking jig that corresponds to the selected slits.

[0009] This sleeve marking jig preferably further comprises a rod-shaped engaging member that detachably engages with the pair of combined jig bodies, and the first arm preferably has a plurality of attachment portions formed along the longitudinal direction for engaging with ends of the engaging member. The attachment portions are preferably formed corresponding to the respective slits formed in the first arm, and the engaging member attached to the attachment portion corresponding to a selected slit is preferably positioned in the center of the opposing second arms.

[0010] The bending portion preferably includes a hinge portion that rotatably connects the first arm portion and the second arm portion. [Effects of the Invention]

[0011] According to the sleeve marking jig of the present invention, the marking work for the sleeve can be carried out quickly and easily. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a sleeve marking jig according to an embodiment of the present invention. [Figure 2] 2 is a plan view showing a main part of the sleeve marking jig shown in FIG. 1. [Figure 3] 1. FIG. 4 is a plan view showing another main part of the sleeve marking jig shown in FIG. [Figure 4] 2 is a perspective view showing a state in which a pair of jig bodies of the sleeve marking jig shown in FIG. 1 are assembled together. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a perspective view of a sleeve marking jig according to one embodiment of the present invention. As shown in Fig. 1, the sleeve marking jig 1 includes a pair of detachable jig bodies 10, 20, and an engaging member 30 that detachably engages with the combined pair of jig bodies 10, 20.

[0014] The pair of jig bodies 10, 20 are configured by first arm portions 11, 21 and second arm portions 12, 22, which are strip-shaped and made of metal, synthetic resin, or the like, and which are connected in an L-shape via bent portions 13, 23. The lengths of the first arm portions 11, 21 and the second arm portions 12, 22 are not particularly limited. However, since the first arm portions 11, 21 correspond to the radial direction of the sleeve and the second arm portions 12, 22 correspond to the longitudinal direction of the sleeve, the first arm portions 11, 21 are usually formed shorter than the second arm portions 12, 22, but the first arm portions 11, 21 may also be longer than the second arm portions 12, 22. In this embodiment, the length of the first arm portions 11, 21 is 350 mm, and the length of the second arm portions 12, 22 is 950 mm.

[0015] The first arms 11, 21 have a plurality of slits 11a, 21a formed along one edge (the lower edge of the first arm 11 and the upper edge of the first arm 21). Each slit 11a, 21a extends in the height direction (width direction) from the edge of the first arms 11, 21, and is formed to a length that is half the height dimension of the first arms 11, 21. The other edge of the first arms 11, 21 is provided with reinforcing portions 11b, 21b that are bent outward.

[0016] Furthermore, a plurality of attachment portions 11c, 21c each consisting of a through-hole penetrating in the thickness direction are formed along the longitudinal direction of the strip-like shape on the first arm portions 11, 21. The height positions of the attachment portions 11c, 21c are set to be the same height when the first arm portions 11, 21 are opposed to each other as shown in FIG.

[0017] 2 is a plan view of the first arm 11 of one jig body 10 shown in FIG. 1, as viewed in the direction of arrow A. As shown in FIG. 2, alphabets A to I for identifying each slit 11a are marked or otherwise indicated near each slit 11a formed in the first arm 11, along with the distance (50 to 300 mm) from the base end (right end in FIG. 2) of the first arm 11 to each slit 11a. The indicated distances for each slit 11a correspond to various commonly used sleeve diameters, but the specific numerical values ​​and the number of slits 11a are not particularly limited. The alphabets for identifying each slit 11a may also be other identification marks such as numbers, symbols, marks, or figures.

[0018] Each mounting portion 11c is formed corresponding to each slit 11a, and to clarify the correspondence with each slit 11a, the same alphabet A to I as the alphabet of the corresponding slit 11a is displayed near each mounting portion 11c. The distance from the base end of each mounting portion 11c is set to half the displayed distance of the corresponding slit 11a. Each mounting portion 11c may be formed at a position overlapping with a slit 11a.

[0019] 3 is a plan view of the first arm 21 of the other jig body 20 shown in FIG. 1, as viewed in the direction of arrow B. As shown in FIG. 3, the first arm 21 has letters A to I printed near each slit 21a and each mounting portion 21c to identify them. The letters A to I printed on the first arm 21 correspond to the letters A to I printed on the first arm 11 shown in FIG. 2, and the distance from the base end of the first arm 21 (the left end in FIG. 3) to each slit 11a is the same as the displayed distance of the slit 11a of the first arm 11 with the same letter. Furthermore, the distance from the base end of each mounting portion 21c to the base end of the corresponding slit 21a is set to half the distance from the base end of the corresponding slit 21a.

[0020] 1, second arm portions 12, 22 have a plurality of slits 12a, 22a formed along one edge (the lower edge of second arm portion 12, the upper edge of second arm portion 22). Each slit 12a, 22a extends in the height direction (width direction) from the edge of second arm portion 12, 22, and is formed to a length that is half the height dimension of second arm portion 12, 22. Each slit 12a, 22a is formed at a regular interval (for example, 30 mm) from the base end portion on the bent portion 13, 23 side.

[0021] The bending portions 13, 23 are hinge portions attached to the base ends of the first arms 11, 21 and the second arms 12, 22, respectively, and rotatably connect the first arms 11, 21 and the second arms 12, 22. The holes 11d, 21d formed at the base ends in FIGS. 2 and 3 are screw holes for attaching the bending portions 13, 23. A preferred example of the hinge portions constituting the bending portions 13, 23 is a ratchet-type hinge, so that the first arms 11, 21 and the second arms 12, 22 can be easily maintained perpendicular to each other. The bending portions 13, 23 do not necessarily have to include hinge portions; for example, the jig bodies 10, 20 may be integrally formed by bending a strip-shaped member at the bending portions 13, 23.

[0022] The engaging member 30 is formed in a rod shape with a constant outer diameter in the longitudinal direction. When the pair of jig bodies 10, 20 are assembled, the engaging member 30 is inserted into the mounting portions 11c, 21c, whereby both ends of the engaging member 30 engage with the mounting portions 11c, 21c. The length of the engaging member 30 is set to be slightly longer than the length of the second arm portions 12, 22. When inserted into the mounting portions 11c, 21c, both ends of the engaging member 30 protrude outward from the first arm portions 11, 21. By providing a stopper (not shown) at one end of the engaging member 30, the stopper can be engaged with the outer surface of the jig body 10 (or jig body 20). At least one of the mounting portions 11c, 21c, which are through-holes, may be formed as a screw hole. In this case, a threaded portion that screws into the screw hole can be formed at the end of the engaging member 30 to serve as a stopper. The attachment portions 11c, 21c are not necessarily limited to through holes, but may be grooves or holding pieces formed on the upper edges of the first arm portions 11, 21, for example.

[0023] As shown in Figure 1, the sleeve marking jig 1 having the above configuration is configured by arranging a pair of jig bodies 10, 20 so that the first arms 11, 21 and the second arms 12, 22 face each other, and by selecting from a plurality of slits (slits 11a and 22a, slits 21a and 12a) of adjacent first and second arms (first arm 11 and second arm 22, first arm 21 and second arm 12) and engaging them with each other, a marking area corresponding to the selected slits is formed inside the pair of jig bodies 10, 20 combined with each other.

[0024] For example, when forming a marking area for a sleeve with an outer diameter of 300 mm, slits 11a, 21a marked with "A" as shown in Figures 2 and 3 are selected from the first arms 11, 21, and distal slits 12a, 22a are selected from the second arms 12, 22 according to the required length, and these are engaged with each other to form a marking area 101 having the same width as the outer diameter of the sleeve and a desired length inside the pair of jig bodies 10, 20, as shown in Figure 4(a). Alternatively, slits 11a, 21a marked with "B" as shown in Figures 2 and 3 are selected from the first arms 11, 21, and central slits 12a, 22a are selected from the second arms 12, 22, and these are engaged with each other to form a marking area 102 that is narrower and shorter than the marking area 101 shown in Figure 4(a), as shown in Figure 4(b).

[0025] Next, by inserting and engaging the engaging member 30 into the mounting portions 11c, 21c corresponding to the selected slits 11a, 21a, the engaging member 30 is positioned at the center in the width direction of the marking areas 101, 102 (i.e., the center between the opposing second arm portions 12, 22), as shown in Figures 4(a) and (b). By using this engaging member 30 as a center line, the sleeve marking jig 1 can be correctly positioned on the marking surface, and then by spraying paint over the entire marking area, the sleeve marking work is completed.

[0026] According to the sleeve marking jig 1 of the present invention, by combining a pair of jig bodies 10, 20, a marking area of ​​the desired shape and size can be quickly and easily formed, thereby enabling quick and easy sleeve marking work. After work is completed, the pair of jig bodies 10, 20 can be easily separated, preventing the degradation of workability that occurs with conventional jigs due to paint adhesion. Furthermore, if a stopper is attached to the engaging member 30, after separating the pair of jig bodies 10, 20, the orientation of the jig body 10 (or jig body 20) with the engaging member 30 inserted can be maintained so that the stopper is facing up, allowing the pair of jig bodies 10, 20 and the engaging member 30 to be easily transported with one hand. Alternatively, the pair of jig bodies 10, 20 can be folded at the bending portions 13, 23 for compact transportation. [Explanation of symbols]

[0027] 1 Sleeve marking jig 10,20 Jig body 11,21 First arm 11a,21a slit 11c, 21c mounting part 12,22 Second arm 12a,22a slit 13,23 Bending part (hinge part) 30 Engagement member

Claims

1. A sleeve marking jig used for marking a sleeve, A pair of jig bodies that are detachable from each other are provided, the jig body has a first arm portion and a second arm portion connected in an L-shape via a bending portion, and a plurality of slits are formed along edges of the first arm portion and the second arm portion, respectively; A sleeve marking jig in which a pair of the jig bodies are arranged so that the first arms and the second arms face each other, and the slits of the adjacent first arms and second arms are selected from a plurality of slits and engaged with each other, thereby forming a marking area inside according to the selected slit.

2. Further provided is a rod-shaped engaging member that is detachably engaged with the pair of combined jig bodies, The first arm portion has a plurality of attachment portions formed along a longitudinal direction thereof, with which an end portion of the engagement member is engaged, the attachment portions are formed corresponding to the slits formed in the first arm portion, The sleeve marking jig according to claim 1, wherein the engaging member attached to the attachment portion corresponding to the selected slit is positioned at the center between the opposing second arm portions.

3. The sleeve marking jig according to claim 1 or 2, wherein the bending portion includes a hinge portion that rotatably connects the first arm portion and the second arm portion.

Images