WO2008136625A2

WO2008136625A2 - The measuring apparatus of length for construction of drains

Info

Publication number: WO2008136625A2
Application number: PCT/KR2008/002519
Authority: WO
Inventors: Beaing Ho Yoo
Original assignee: Beaing Ho Yoo
Priority date: 2007-05-08
Filing date: 2008-05-06
Publication date: 2008-11-13
Also published as: KR20080000212U; KR200441415Y1; WO2008136625A3

Abstract

A length measuring apparatus is used to install a drain in a building. The apparatus includes an inner tube, which has a diameter capable of being inserted into a pipe installation port of a Sextia pipe fitting installed at a lower story of a building, and an outer tube, which has a hollow hole into which the inner tube is inserted so as to slide up and down, and an upper end of which is positioned at the center of a pipe installation hole formed in a wall of an upper story when the inner tube inserted into the hollow hole is in contact with a catch seat of the Sextia pipe fitting.

Description

THE MEASURING APPARATUS OF LENGTH FOR CONSTRUCTION OF DRAINS

Technical Field

[1] The present invention relates to an apparatus for measuring the length of a pipe to be installed in order to cut the pipe for a drain when the drain is installed. Background Art

[2] Any building has drain for drawing off waste water from a kitchen sink, a bathtub, a toilet, and so on. This drain is connected into a unified structure from upper stories to lower stories of the building.

[3] In detail, as in FIG. 1, the drain includes a collecting drain 1 connecting an upper story 7 and a lower story 6 of the building, and branching drains 2 carrying waste water generated on each story to the collecting drain 1.

[4] The collecting drain 1 is made up of a plurality of vertical pipes Ia, and each branching drain 2 is made up of a plurality of branch pipes 2a. The vertical pipes and the branch pipes are connected by Sextia pipe fittings 3.

[5] Further, the vertical pipes of the collecting drain pass through slabs 4 of the building when connected, and the branch pipes of the branching drains pass through pipe installation holes 5a in walls 5 of the building for connection thereof.

[6] Conventionally, when installing the collecting drain and the branching drain, the vertical pipes are first installed, and then the branch pipes are installed on the Sextia pipe fittings connecting the vertical pipes. Since the pipe installation holes for the respective stories of the building are not at positions corresponding to each other, the installation is conducted in an on-site connection fashion.

[7] Thus, it takes quite a lot of time to install the collecting drain and the branching drains.

[8] Meanwhile, the collecting drain must be constructed in a manner such that the center of each Sextia pipe fitting between the vertical pipes is relatively accurately positioned at the center of each pipe installation hole. For this reason, the installation of the collecting drain requires considerable care and takes a relatively long time.

[9] This is because the installation position of the vertical pipe, which determines the position at which the vertical pipe is cut, is relatively inaccurately measured, and furthermore because such measurement takes a long time.

[10] More specifically, when measuring the length of installation of the vertical pipe in order to cut the vertical pipe, the length a from an inner seat of the Sextia pipe fitting, which has already been installed at the lower story, to a top surface (or a floor) of the slab of the building is primarily measured, and then the length b from the top surface of the slab of the building to the center of the pipe installation hole of the wall of the building is secondarily measured. The length c from the center of the Sextia pipe fitting to the inner seat of the Sextia pipe fitting is subtracted from a value obtained by adding the primary measurement length a to the secondary measurement length b. Thereby, the length of the vertical pipe is estimated.

[11] However, since the top surface of the slab is not flat, and since errors are increased in the process of adding and subtracting numerical values obtained by measuring the installation length several times using, for instance, a retractable tape measure, the measurement yields inaccurate values and takes a long time.

[12] Consequently, for these reasons, the installation of the collecting drain requires considerable care and takes a relatively long time. Disclosure of Invention Technical Problem

[13] Accordingly, the present invention has been made in an effort to solve the problems occurring in the related art, and an object of the present invention is to provide a length measuring apparatus used for installing drains in a building, capable of relatively accurately measuring the length between installed components of the drain, such as a vertical pipe, through a simple method so as to be able to rapidly install the drain in the building. Technical Solution

[14] The present invention is directed to a length measuring apparatus used for installing a drain in a building.

[15] The present invention includes an inner tube, which is caught on a catch seat of a

Sextia pipe fitting and has a scale marker indicating lengths formed on the outer surface thereof, and an outer tube, into which the inner tuber is inserted so as to slide up and down, wherein the inner tube contacts a catch seat, and an upper end of the outer tube reaches a predetermined position, so that the length of a vertical pipe can be relatively accurately measured for the installation of a collecting drain through a simple method.

[16] According to one aspect of the present invention, there is provided an apparatus for measuring length, comprising: an inner tube, which has a diameter such that it can be inserted into a pipe installation port of a Sextia pipe fitting installed on a lower story of a building; and an outer tube, which has a hollow hole into which the inner tube is inserted so as to slide up and down, and an upper end of which is positioned at the center of a pipe installation hole formed in a wall of an upper story when the inner tube, inserted into the hollow hole, contacts a catch seat of the Sextia pipe fitting. The inner tube includes a scale marker on the outer surface thereof so as to be able to check the length from the lower end of the inner tube to the upper end of the outer tube. The outer tube includes subtraction checking portions, each of which is marked based on the size of the Sextia pipe fitting and indicates the scale marker of the inner tube at a position corresponding to a value obtained by subtracting the length from the center to the catch seat of the Sextia pipe fitting from the total measured length according to the size of the Sextia pipe fitting.

[17] Further, the outer tube may include a direct checking portion at one end thereof, which indicates a scale on the scale marker, representing the length from the lower end of the inner tube to the upper end of the outer tube.

[18] In addition, when the upper end of the outer tube is brought into contact with the lower catch seat of the Sextia pipe fitting installed in the pipe installation hole of the wall of the upper story, the length from the catch seat of the Sextia pipe fitting installed on the lower story of the building to the catch seat of the Sextia pipe fitting installed on the upper story of the building may be checked through the direct checking portion.

Advantageous Effects

[19] As described above, according to the present invention, the length measuring apparatus used for installing a drain in a building includes the inner tube and the outer tube, is adjustable in length, and is used to position the outer tube at the center of the pipe installation hole of the upper story in the state in which the inner tube is brought into contact with the catch seat of the Sextia pipe fitting, which has been previously installed on the lower story, thereby enabling the length to be measured using the scale marker marked on the inner tube. Thus, when the collecting drain is installed in the building, even a single worker can relatively accurately measure the length of the vertical pipe through a simple method.

[20] This enables the installation length of a component of the drain, such as a vertical pipe, to be relatively accurately measured through a simple method, so that the drain can be rapidly installed in the building. Brief Description of the Drawings

[21] FIG. 1 is a schematic view illustrating the state in which a drain is installed in a building according to the related art;

[22] FIG. 2 is a schematic view explaining a length measuring apparatus used for installing a drain in a building according to the present invention;

[23] FIG. 3 is a schematic view illustrating a Sextia pipe fitting used for installing a drain in a building;

[24] FIG. 4 is a schematic view illustrating the state in which the length of a vertical pipe is measured using a measuring apparatus of the present invention when the upper end of an outer tube is positioned at the center of a pipe installation hole; and

[25] FIG. 5 is a schematic view illustrating the state in which the length of a vertical pipe is measured using a measuring apparatus of the present invention when the upper end of an outer tube is brought into contact with a catch seat formed at the lower portion of a Sextia pipe fitting. Mode for the Invention

[26] Hereinafter, reference will be made in greater detail to an embodiment of the invention with reference to the accompanying drawings.

[27] The present invention is directed to an apparatus for measuring a length to which a pipe, particularly a vertical pipe, is to be cut when a drain is installed in a building.

[28] The present invention aims to allow a single worker to measure the length to be measured with ease.

[29] To do so, the measuring apparatus must not be bent even if it extends a good length.

[30] Further, a reference point of the measuring apparatus must be easily brought into contact with one of opposite ends of the length to be measured, and the state of contact must be maintained well.

[31] As such, the measuring apparatus of the present invention comprises an inner tube

10, which is free from bending, and an outer tube 20, which is free from bending and has a hollow hole 21 into which the inner tube 10 is inserted, so that it can adjust the length from the lower end of the inner tube 10 to the upper end of the outer tube 20.

[32] Thus, the inner tube 10 is adapted not only to be inserted into the pipe installation port 3a of a Sextia pipe fitting 3, installed on the lower story 6 of a building so as to be able to be caught on a catch seat 3b of the pipe installation port 3a, but also to maintain this state with ease.

[33] Further, the outer tube 20 is adapted to facilitate positioning of the upper end of the outer tube 20 at a predetermined position, particularly, at the center of a pipe installation hole 5a formed in the wall 5 of an upper story 7 of the building in the state in which the inner tube 10 is inserted into the hollow hole 21 of the outer tube 20 and is brought into contact with the catch seat 3b of the pipe installation port of the Sextia pipe fitting 3. In this process, the inner tube 10 or the outer tube 20 can be maintained straight without bending.

[34] In other words, part of the inner tube 10, which is brought into contact with the catch seat 3b of the pipe installation port of the Sextia pipe fitting 3, serves as a reference point for measuring the length.

[35] Even if the outer tube 20 slides off of the inner tube 10, neither the inner tube 10 nor the outer tube 20 undergoes bending. To this end, the inner tube 10 and the outer tube 20 must be made of a material that is highly resistant to bending stress. The material for the inner tube 10 and the outer tube 20 includes metal or hard plastic.

[36] Of course, the material of the inner tube 10 or the outer tube 20 should be selected in consideration of all of physical properties such as strength, weight depending on the length and cross section thereof, and so on. However, techniques for designing the tubes so as to meet such conditions are well-known, and applicable material is available from various industrial fields, and so a detailed description thereof will be omitted.

[37] The present invention functions to enable length to be measured, and thus must provide a scale marker 30 in which scales and numbers are formed so as to be able to indicate the length from the lower end of the inner tube 10 to the upper end of the outer tube 20.

[38] However, according to the present invention, the inner tube 10 is inserted into the hollow hole 21 of the outer tube 20 so as to slide up and down, and thus the scale marker 30 is formed on the outer surface of the inner tube 10, which is an essential component of the present invention.

[39] Further, the present invention is adapted to check the length from the lower end of the inner tube 10 to the upper end of the outer tube 20, and thus the scale marker 30 formed on the outer surface of the inner tube 10 has numerical values increasing in an upward direction.

[40] The numerical value recorded in the scale marker 30 preferably represents the length from the part of the inner tube 10 that is brought into contact with the catch seat 3b of the pipe installation port of the Sextia pipe fitting 3 to the upper end of the outer tube 20, rather than the length from the part of the inner tube 10 that is brought into contact with the catch seat 3b of the pipe installation port of the Sextia pipe fitting 3 to the portion on which the scale is marked.

[41] In detail, referring to the attached figures, the numerical value shown by the scale marker 30 represents the length from the lowermost end of the inner tube 10 to the uppermost end of the outer tube 20, rather than the length from the lowermost end of the inner tube 10 to the position at which the numerical value is recorded. This length can be checked by reading the value on the scale at the uppermost end of the outer tube 20, which is exposed through from the hollow hole 21, i.e. the value shown by a direct checking portion 50 (see FIG. 5).

[42] Thus, in the case in which the real length from the lowermost end of the inner tube

10 to the position at which the numerical value of the scale marker 30 is recorded is 132cm, and the length of the outer tube 20 is 100cm, the scale marker 30 is adapted to show 232cm.

[43] This is because, in the case in which the real length from the lowermost end of the inner tube 10 to the position at which the numerical value is recorded on the scale marker 30, a process of adding the length of the outer tube 20 is required, which is inconvenient and entails the possibility of introducing calculation error.

[44] Meanwhile, in measuring a length using the apparatus of the present invention, as in

FIG. 4, the inner tube 10 is brought into contact with the catch seat 3b of the Sextia pipe fitting 3, and the upper end of the outer tube 20 is positioned at the center of the pipe installation hole 5a formed in the wall 5 of the upper story of the building. Thereby, the length d from the portion contacting the catch seat to the upper end of the outer tube 20 is obtained. Nevertheless, the length d does not correspond to the length of the vertical pipe.

[45] This is because, due to the length e from the center from the catch seat 3b of the

Sextia pipe fitting 3 as in FIG. 3, the real installation length of the vertical pipe can be obtained only when the length e is subtracted from the total length d from the lower end of the inner tube 10 (i.e. the portion in contact with the catch seat 3b of the Sextia pipe fitting 3) to the upper end of the outer tube 20 as in FIG. 4.

[46] However, as described above, the subtraction of the length e from the center from the catch seat 3b of the Sextia pipe fitting 3 is responsible for the reduction in working efficiency.

[47] Moreover, Sextia pipe fittings 3 are available from several companies, and the length e from the center to the catch seat of the Sextia pipe fittings differs depending on the source.

[48] Further, the length e from the center to the catch seat of the Sextia pipe fitting varies depending on the size of the Sextia pipe fitting.

[49] These conditions cause considerable inconvenience and errors when the length is calculated.

[50] For this reason, the outer tube 20, which is the component of the present invention, has marks showing the sizes of the Sextia pipe fittings 3 as in FIGS. 2 and 4, and further includes subtraction checking portions 40, which are formed at positions at each of which the length e from the center to the catch seat of the Sextia pipe fitting is subtracted from the total length according to the size of the Sextia pipe fitting.

[51] At this time, the subtraction checking portions 40 indicate the scale marker 30 of the inner tube 10.

[52] In the case of FIG. 4, it is not necessary to check the total length d from the lower end of the inner tube 10 (i.e. the portion contacting the catch seat 3b of the Sextia pipe fitting 3) to the upper end of the outer tube 20. For example, when the Sextia pipe fitting from B company, which is to be positioned at the pipe installation hole 5a of the upper story, has a size of 12 inches, the installation length of the vertical pipe is 257cm. Further, when the Sextia pipe fitting from C company has a size of 13 inches, the installation length of the vertical pipe is 250cm. [53] As described above, the subtraction checking portions 40 make it possible to check the installation length of the vertical pipe in a single step without a separate calculating process.

[54] Meanwhile, the subtraction checking portions 40 may be simply provided with meter or inch scales so as to enable separate subtraction of the length e from the center to the catch seat of the Sextia pipe fitting without having to take into account subtraction lengths based on the Sextia pipe fittings of several companies.

[55] However, as described above, the method of positioning the upper end of the outer tube 20 at the center of the pipe installation hole 5 a formed in the wall 5 of the upper story 7 in the state in which the inner tube 10 is brought into contact with the catch seat 3b of the Sextia pipe fitting 3 has a problem in that an error is present in a measured value.

[56] In other words, it is difficult to accurately position the upper end of the outer tube 20 at the center of the pipe installation hole 5 a.

[57] In particular, when a branching drain 2 is installed before a collecting drain 1, the possibility of the introduction of an error as well as the range of the error may be further increased if a branch pipe of the branching drain 2 is relatively inaccurately positioned at the center of the pipe installation hole 5a.

[58] Further, the subtraction checking portions 40 have difficulty taking into account products from various companies, and cannot account for Sextia pipe fittings having new specifications.

[59] As such, as seen in FIGS. 2 and 5, the present invention can be realized in a manner such that the upper end of the outer tube 20 can be brought into contact with the lower catch seat of the Sextia pipe fitting installed in the pipe installation hole 5a of the wall 5 of the upper story 7, and such that the length from the upper end of the outer tube 20 to the lower end of the inner tube 10 can be checked through the scale marker 30 in the state in which the upper end of the outer tube 20 is in contact with the lower catch seat of the Sextia pipe fitting.

[60] In other words, in FIG. 5, the branch pipe of the branching drain 2 of the upper story

7 has already been installed.

[61] Thus, the Sextia pipe fitting 3 is installed on the branch pipe of the branching drain 2, which has already been installed, in order to check the length of the vertical pipe to be installed.

[62] Of course, at this time, the Sextia pipe fitting 3 is temporarily installed rather than completely installed in order to check the length of the vertical pipe to be installed.

[63] Then, in the state in which the inner tube 10 of the present invention is in contact with the catch seat of the Sextia pipe fitting, the upper end of the outer tube 20 comes into contact with the lower catch seat of the Sextia pipe fitting of the upper story. [64] This state is illustrated in FIG. 5. At this time, it can be seen through the direct checking portion 50 that the length of the vertical pipe to be installed is about 266cm.

[65] Although an exemplary embodiment of the present invention has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

[1] An apparatus for measuring a length, comprising: an inner tube, which has a diameter capable of being inserted into a pipe installation port of a Sextia pipe fitting installed at a lower story of a building; and an outer tube, which has a hollow hole into which the inner tube is inserted so as to slide up and down, and an upper end of which is positioned at a center of a pipe installation hole formed in a wall of an upper story when the inner tube inserted into the hollow hole is in contact with a catch seat of the Sextia pipe fitting, wherein the inner tube includes a scale marker on an outer surface thereof so as to be able to check a length from a lower end of the inner tube to the upper end of the outer tube, and the outer tube includes subtraction checking portions, each of which is marked based on the size of the Sextia pipe fitting and indicates the scale marker of the inner tube at a position corresponding to a value obtained by subtracting a length from a center to the catch seat of the Sextia pipe fitting from a total measured length according to the size of the Sextia pipe fitting.

[2] The apparatus according to claim 1, wherein the outer tube includes a direct checking portion at one end thereof which indicates a scale on the scale marker representing the length from the lower end of the inner tube to the upper end of the outer tube.

[3] The apparatus according to claim 2, wherein, when the upper end of the outer tube is in contact with the lower catch seat of the Sextia pipe fitting installed in the pipe installation hole of the wall of the upper story, a length from the catch seat of the Sextia pipe fitting installed on the lower story of the building to that of the Sextia pipe fitting installed on the upper story of the building is checked through the direct checking portion.