JP3661006B2 - Left / Right Curved Curve - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a left and right curved saddle that is embedded in a bending point of a drain pipe in a residential land.
[0002]
[Prior art]
Conventionally, a drainage basin called a curved basin has been buried at the bending point of the drainage pipe in the residential land. This bent ridge is formed by forming a curved groove at the bottom of the ridge and by forming drainage pipe connection ports at both ends of the curved groove from the ridge side wall. 90 ° bent ridge and 45 ° bent ridge are the mainstream. is occupying.
[0003]
A 90 ° bend trough has a curved groove at the bottom of the trough that is curved in a quarter arc shape, and when the upstream and downstream drain pipes are inserted into the drain pipe connection ports at both ends, both drain pipes are perpendicular to each other. It can be connected. In addition, the 45 ° bent trough has a curved groove at the bottom of the trough that is curved in an approximately 1/8 arc shape, and when the upstream and downstream drain pipes are inserted into the drain pipe connection ports at both ends, both drain pipes are connected. It can be connected at an angle of 135 °.
[0004]
The 90 ° bend is curved in reverse to the one with a flow gradient from the drain pipe connection port at one end of the curved groove toward the drain pipe connection port at the other end so as to match the flow gradient of the drain pipe. There are two types, one having a flow gradient from the drain pipe connection port at the other end of the groove toward the drain pipe connection port at one end. Similarly, a 45 ° bend is also provided with a flow gradient from the drainage pipe connection port at one end of the curved groove toward the drainage pipe connection port at the other end, and from the drainage pipe connection port at the other end of the curved groove. There are two types, one with a flow gradient toward the drain pipe connection port.
[0005]
As described above, since there are two types of conventional 90 ° bent rods and 45 ° bent rods with opposite flow gradients, a large number of stocks has been a problem.
[0006]
Therefore, in order to halve the types of stock, as shown in FIGS. 9 to 11, as shown in FIGS. 9 to 11, a curved groove 101 having a substantially ¼ arc shape without a flow gradient is formed at the bottom, and drain pipes are formed at both ends of the curved groove 101. A so-called “left / right combined type” 90 ° bent ridge 100 formed by projecting the connection ports 102a and 102b from the heel side wall, and similarly, a substantially 1/8 arc-shaped curved groove without a flow gradient is formed on the heel bottom. Thus, a so-called “left / right combined type” 45 ° bent rod (not shown) in which drainage pipe connection ports are formed at both ends has been manufactured.
[0007]
The 90 ° bent rod 100 has an upstream drain pipe connected to a drain pipe connection port 102a at one end of the curved groove (left end in the figure), and a downstream drain pipe connected to a drain pipe connection port 102b at the other end of the curved groove (right end in the figure). When connecting the pipes, as shown in FIG. 11, the 90 ° bend 100 is slightly tilted to the right so that a flow gradient is provided from the drain pipe connection port 102a at one end to the drain pipe connection port 102b at the other end. Installed. Conversely, when connecting the upstream drainage pipe to the drainage pipe connection port 102b at the other end and connecting the downstream drainage pipe to the drainage pipe connection port 102a at one end, the 90 ° bend ridge 100 is slightly inclined to the left side, It is installed so as to have a flow gradient from the drain pipe connection port 102b at the other end toward the drain pipe connection port 102a at one end.
[0008]
The flow gradient differs slightly depending on the pipe diameter of the drainage pipe. When a drainage pipe having a pipe diameter of about 100 mm is connected to the drainage pipe connection ports 102a and 102b, the flow gradient is normally set to 2/100, and the pipe diameter is about 125 mm. The flow gradient when connecting a drain pipe is normally set to 1.7 / 100, and the flow gradient when connecting a drain pipe with a pipe diameter of approximately 150 mm is normally set to 1.5 / 100, and the pipe diameter is approximately The flow gradient when connecting a 200 mm drain pipe is usually set to 1.2 / 100.
[0009]
In many cases, the above-described operation for applying the flow gradient is appropriately performed depending on the experience and intuition of the trader. For example, the flow gradient may be applied using a gradient setting jig 110 as shown in FIG. That is, the gradient setting jig 110 has a gradient T (for example, 2/100 in the case of a drainage pipe having a pipe diameter of 100 mm) where the upper surface of the jig is equal to the flow gradient of the drainage pipe with respect to the bottom of the jig. As shown in FIG. 10, the jig 110 is placed on the upper end opening edge 103 of the curved hook 100 so as to be orthogonal to the left-right symmetric line L of the curved hook 100, and the level 10 is placed thereon. It is installed and a flow gradient is given by inclining the bend 100 so that the upper surface of the jig 110 is horizontal.
[0010]
However, the conventional left and right-handed type bending saddle, as described below, applies not only to applying a flow gradient based on the experience and intuition of the supplier, but also to applying a flow gradient using the gradient setting jig 110 described above. There was a serious problem.
[0011]
[Problems to be solved by the invention]
For example, in a drain pipe having a pipe diameter of 100 mm, in order to give a flow gradient of 2/100 to a 90 ° bend, the upper surface of the jig as the gradient setting jig 110 has a gradient of 2/100 with respect to the bottom surface of the jig. When the jig having the above is used and the 90 ° bent rod 100 is inclined as described above, as shown in FIG. 12, the center P of the drainage pipe connection port 102a at one end of the curved groove and the drainage pipe connection port 102b at the other end of the curved groove. Line L connecting the center Q of _PQ Will have a gradient T of 2/100.
[0012]
However, the central axis L passing through the center P of the drain pipe connection port 102a at one end _P And the central axis L passing through the center Q of the drain pipe connection port 102b at the other end _Q The gradient t is approximately 1.4 / 100. This is the central axis L _P And center axis L _Q This is because the length of POQ is approximately 1.4 times the length of PQ, where O is the orthogonal point.
[0013]
In this way, the central axis L of the drain pipe connection ports 102a and 102b _P , L _Q If the gradient t of the water becomes smaller than the flow gradient (2/100) of the upstream and downstream drainage pipes plugged into these connection ports, the drainage pipe plugging operation becomes difficult, There was a problem that an error occurred in the flow gradient of the drain pipe even if it was plugged in.
[0014]
Such a problem also occurs in a 45 ° bend. In addition, when using a 1.7 / 100 gradient setting jig in order to give a 1.7 / 100 flow gradient to a left / right type bend in a drainage pipe having a pipe diameter of 125 mm, When a 1.5 / 100 gradient setting jig is used to apply a 1.5 / 100 flow gradient to a left / right type bend in a drainage pipe having a diameter of 150 mm, or a pipe diameter of 200 mm This also occurs when a 1.2 / 100 gradient setting jig is used to apply a 1.2 / 100 flow gradient to a left / right type bend in the drainage pipe.
[0015]
The present invention has been made in view of the above-described problems, and the object of the present invention is to make sure that the central axis of both drain pipe connection ports has a gradient equal to a predetermined flow gradient of the drain pipe. From the drain pipe connection port to the drain pipe connection port at the other end, or from the drain pipe connection port at the other end to the drain pipe connection port at one end, an appropriate flow gradient can be easily applied. It is an object of the present invention to provide a left and right curved bent rod that facilitates the plug-in connection of the drain pipe and does not cause an error in the flow gradient of the drain pipe.
[0016]
[Means for Solving the Problems]
The left and right dual-purpose bending rods of the present invention that achieve the above object are roughly classified into the following four types.
[0017]
(1) A left / right bend for connecting a drain pipe with a pipe diameter of 100 mm to the drain pipe connection port, and it is necessary to give a 2/100 gradient to the central axis of the drain pipe connection port.
[0018]
(2) A left / right bend for connecting a drain pipe having a pipe diameter of 125 mm to the drain pipe connection port, and it is necessary to give a gradient of 1.7 / 100 to the central axis of the drain pipe connection port.
[0019]
(3) A left / right bend for connecting a drain pipe with a pipe diameter of 150 mm to the drain pipe connection port, and it is necessary to give a gradient of 1.5 / 100 to the central axis of the drain pipe connection port.
[0020]
(4) A left / right bend for connecting a drain pipe having a pipe diameter of 200 mm to the drain pipe connection port, and it is necessary to give a 1.2 / 100 gradient to the central axis of the drain pipe connection port.
[0021]
What belongs to the type {circle around (1)} described above is a left / right bent crook according to claims 1 to 3.
[0022]
That is, the left and right curved saddle of claim 1 is formed with a curved groove having no flow gradient at the bottom of the saddle, and drain pipe connection ports for connecting drain pipes having a pipe diameter of approximately 100 mm to both ends of the curved groove. A curved saddle provided with a heel body formed by projecting from the heel body and a gradient setting cylinder fitted and connected to the upper end opening of the heel body, the upper opening end of the gradient setting cylinder being the lower part Inclining with respect to the opening end with a predetermined gradient greater than 2/100 determined according to the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end, When the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the center axis of the drainage pipe connection port at both ends of the curved groove has a gradient of approximately 2/100. It is a feature.
[0023]
The left and right bent rod of claim 2 is the left and right bent rod of claim 1, wherein the curved groove of the rod main body is formed in a substantially 1/4 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 90 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 2.8 / 100 with respect to the lower opening end. It is characterized by this.
[0024]
Further, the left and right bent rod of claim 3 is the left and right bent rod of claim 1, wherein the curved groove of the rod main body is formed in a substantially 1/8 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 145 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 2.2 / 100 with respect to the lower opening end. It is characterized by this.
[0025]
The left and right curved saddle of claim 1 has a drainage pipe connection port at one end (left end) of the curved groove as a connection port of the upstream drainage pipe and a drainage pipe connection port at the other end (right end) as a connection port of the downstream drainage pipe. When this is used, the cylinder is fitted and connected to the upper end opening of the bag main body so that the gradient of the upper opening end of the gradient setting cylinder is a right-up gradient. Then, for example, a level or the like is placed on the upper opening end of the gradient setting cylinder, and the main body is slightly tilted to the right so that the upper opening end is horizontal. Appropriate flow gradient is attached from the pipe connection port to the drain pipe connection port at the other end (right end), and the center axis of the drain pipe connection ports at both ends is the upstream and downstream drain pipes (tube diameter: 100 mm). Since it has a gradient of approximately 2/100 equal to the flow gradient, it becomes possible to easily perform the connecting operation of the drain pipe, and the fear of an error in the flow gradient of the drain pipe is eliminated.
[0026]
On the other hand, when using the drainage pipe connection port at one end (left end) of the curved groove as the connection port for the downstream drainage pipe and the drainage pipe connection port at the other end (right end) as the connection port for the upstream drainage pipe, set the gradient. The cylinder is turned 180 ° so that the slope of the upper opening end of the cylinder body is a left-up slope, and is fitted and connected to the upper end opening of the bag main body. What is necessary is just to incline a heel main body a little to the left side and install so that the upper opening end of the cylinder for gradient setting may become horizontal. In this way, an appropriate flow gradient is provided from the drain pipe connection port at the other end (right end) to the drain pipe connection port at one end (left end), and the center axis of the drain pipe connection ports at both ends is the same as above. Since it has a gradient of approximately 2/100 equal to the flow gradient of the upstream and downstream drain pipes (tube diameter 100 mm), the same effect as described above can be obtained.
[0027]
The gradient of the upper opening end of the gradient setting cylinder is such that when the heel body is tilted so that the upper opening end is horizontal, the central axis of the drain pipe connection ports at both ends of the curved groove is approximately 2/100. Is determined according to the depression angle between the central axis of the drainage pipe connection port at one end and the central axis of the drainage pipe connection port at the other end. Calculated in (1).
[0028]
T = [2 / sin (θ / 2)] / 100 (1)
As can be seen from this approximate expression (1), the gradient of the upper end opening of the gradient setting cylinder increases as the depression angle θ decreases, and as the depression angle θ approaches 180 °, the gradient decreases and approaches 2/100. 2/100 or less. At 2/100 or less, even if the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drainage pipe connection ports at both ends of the curved groove is necessary for the drainage pipe having a pipe diameter of 100 mm. The object of the present invention cannot be achieved because it will have a smaller gradient than the flow gradient 2/100.
[0029]
The curved groove is formed in a substantially ¼ arc shape like the left and right curved saddle of claim 2, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is substantially For 90 °, the gradient of the upper opening end of the gradient setting cylinder may be set to approximately 2.8 / 100 from the above approximate expression (1). If the main body is tilted so that it is horizontal, an appropriate flow gradient will be obtained, and the center axis of the drain pipe connection ports at both ends will have a gradient of approximately 2/100 equal to the flow gradient of the drain pipe having a pipe diameter of 100 mm. become.
[0030]
Further, the curved groove is formed in a substantially 1/8 arc shape like the left and right curved saddle of claim 3, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end Is approximately 135 °, the gradient of the upper opening end of the gradient setting cylinder may be set to approximately 2.2 / 100 from the above approximate expression (1), and the upper opening having such a gradient is set. When the main body is tilted so that the ends are horizontal, an appropriate flow gradient is obtained, and the central axis of the drain pipe connection ports at both ends has a gradient of approximately 2/100 equal to the flow gradient of the drain pipe having a pipe diameter of 100 mm. I will have.
[0031]
Next, what belongs to the type {circle around (2)} is the left and right curved saddle according to claims 4 to 6.
[0032]
That is, the left and right curved saddle of claim 4 forms a curved groove having no flow gradient at the bottom of the saddle, and a drainage pipe connection port for connecting a drainage pipe having a pipe diameter of approximately 125 mm to both ends of the curved groove. A curved saddle provided with a heel body formed by projecting from the heel body and a gradient setting cylinder fitted and connected to the upper end opening of the heel body, the upper opening end of the gradient setting cylinder being the lower part It is inclined with respect to the opening end with a predetermined gradient greater than 1.7 / 100 determined according to the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end. When the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axes of the drain pipe connection ports at both ends of the curved groove have a gradient of approximately 1.7 / 100. It is characterized by that.
[0033]
The left and right bent rod of claim 5 is the left and right bent rod of claim 4, wherein the curved groove of the rod main body is formed in a substantially ¼ arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 90 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 2.4 / 100 with respect to the lower opening end. It is characterized by this.
[0034]
Further, the left and right bent rod according to claim 6 is the left and right bent rod according to claim 4, wherein the curved groove of the rod main body is formed in a substantially 1/8 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 135 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 1.8 / 100 with respect to the lower opening end. It is characterized by this.
[0035]
In the left and right curved saddle of claim 4, when the saddle body is slightly inclined so that the upper opening end of the gradient setting cylinder is horizontal, the drainage pipe connection ports at both ends have drainage pipes with a pipe diameter of 125 mm. Since it has a gradient of approximately 1.7 / 100 equal to the appropriate flow gradient of the pipe, it becomes possible to easily connect the drain pipe with a pipe diameter of 125 mm, and there is an error in the flow gradient of the drain pipe. The worry that causes
[0036]
The gradient of the upper opening end of the gradient setting cylinder is approximately 1.7 / 100 when the center axis of the drainage pipe connection port at both ends of the curved groove is approximately 1.7 / 100 when the main body is tilted so that the upper opening end is horizontal. The slope T is determined according to the depression angle between the central axis of the drainage pipe connection port at one end and the central axis of the drainage pipe connection port at the other end. It is calculated by the approximate expression (2).
[0037]
T = [1.7 / sin (θ / 2)] / 100 (2)
As can be seen from this approximate expression (2), the gradient of the upper end opening of the gradient setting cylinder increases as the depression angle θ decreases, and the gradient decreases as the depression angle θ approaches 180 °, becoming 1.7 / 100. Although it approaches, it does not become 1.7 / 100 or less. At 1.7 / 100 or less, even if the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drain pipe connection port at both ends of the curved groove is a drain pipe having a pipe diameter of 125 mm. The object of the present invention cannot be achieved because it will have a smaller gradient than the required 1.7 / 100 flow gradient.
[0038]
The curved groove is formed in a substantially ¼ arc shape like the left and right curved saddle of claim 5, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is substantially For 90 °, the gradient of the upper opening end of the gradient setting cylinder may be set to approximately 2.4 / 100 from the above approximate expression (2). When the heel body is tilted so as to be horizontal, an appropriate flow gradient is attached, and the central axis of the drain pipe connection ports at both ends has a gradient of approximately 1.7 / 100 which is equal to the flow gradient of the drain pipe having a pipe diameter of 125 mm. It will have.
[0039]
Further, the curved groove is formed in a substantially 1/8 arc shape like the left and right curved saddle of claim 6, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end Is approximately 135 °, it is sufficient to set the gradient of the upper opening end of the gradient setting cylinder to approximately 1.8 / 100 from the above approximate expression (2). When the heel body is tilted so that the end is horizontal, an appropriate flow gradient is obtained, and the central axis of the drain pipe connection port at both ends is approximately 1.7 / 100, which is equal to the flow gradient of the drain pipe having a pipe diameter of 125 mm. Has a gradient.
[0040]
Next, what belongs to the type {circle around (3)} is a left / right bent crook according to claims 7-9.
[0041]
That is, the left and right curved saddle of claim 7 is formed with a curved groove having no flow gradient at the bottom of the saddle, and a drain pipe connection port for connecting a drain pipe having a pipe diameter of approximately 150 mm to both ends of the curved groove. A curved saddle provided with a heel body formed by projecting from the heel body and a gradient setting cylinder fitted and connected to the upper end opening of the heel body, the upper opening end of the gradient setting cylinder being the lower part It is inclined with respect to the opening end with a predetermined gradient greater than 1.5 / 100 determined according to the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end. When the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axes of the drain pipe connection ports at both ends of the curved groove have a gradient of approximately 1.5 / 100. It is characterized by that.
[0042]
The left and right bent rod of claim 8 is the left and right bent rod of claim 7, wherein the curved groove of the rod main body is formed in a substantially 1/4 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 90 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 2.1 / 100 with respect to the lower opening end. It is characterized by this.
[0043]
Further, the left and right curved saddle according to claim 9 is the left and right curved saddle according to claim 7, wherein the curved groove of the saddle main body is formed in a substantially 1/8 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 135 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 1.6 / 100 with respect to the lower opening end. It is characterized by this.
[0044]
In the left and right curved saddle of claim 7, when the saddle body is slightly tilted so that the upper opening end of the gradient setting cylinder is horizontal, the drainage pipe connection ports at both ends have drainage pipes with a pipe diameter of 150 mm. Since it has a gradient of approximately 1.5 / 100 equal to the appropriate flow gradient of the pipe, it becomes possible to easily connect and connect a drain pipe with a pipe diameter of 150 mm, and there is an error in the flow gradient of the drain pipe. The worry that causes
[0045]
The gradient of the upper opening end of the gradient setting cylinder is such that the center axis of the drainage pipe connection ports at both ends of the curved groove is approximately 1.5 / 100 when the main body is tilted so that the upper opening end is horizontal. The slope T is determined according to the depression angle between the central axis of the drainage pipe connection port at one end and the central axis of the drainage pipe connection port at the other end. Calculated by the approximate expression (3).
[0046]
T = [1.5 / sin (θ / 2)] / 100 (3)
As can be seen from this approximate expression (3), the gradient of the upper end opening of the gradient setting cylinder increases as the depression angle θ decreases, and as the depression angle θ approaches 180 °, the gradient decreases to 1.5 / 100. Although it approaches, it does not become 1.5 / 100 or less. At 1.5 / 100 or less, even if the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drain pipe connection port at both ends of the curved groove is a drain pipe having a pipe diameter of 150 mm. The object of the present invention cannot be achieved because it will have a smaller gradient than the required 1.5 / 100 flow gradient.
[0047]
The curved groove is formed in a substantially ¼ arc shape like the left and right curved saddle of claim 8, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is substantially For 90 °, the gradient of the upper opening end of the gradient setting cylinder may be set to approximately 2.1 / 100 from the above approximate expression (3). When the heel body is tilted so that it is horizontal, an appropriate flow gradient is attached, and the central axis of the drain pipe connection ports at both ends has a gradient of approximately 1.5 / 100, which is equal to the flow gradient of a drain pipe having a pipe diameter of 150 mm. It will have.
[0048]
Further, the curved groove is formed in a substantially 1/8 arc shape like the left and right curved saddle of claim 9, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end Is approximately 135 °, it is sufficient to set the gradient of the upper opening end of the gradient setting cylinder to approximately 1.6 / 100 from the above approximate expression (3). When the heel body is tilted so that the ends are horizontal, an appropriate flow gradient is attached, and the center axis of the drain pipe connection ports at both ends is approximately 1.5 / 100 equal to the flow gradient of the drain pipe having a pipe diameter of 150 mm. Has a gradient.
[0049]
Next, what belongs to the type {circle around (4)} is a left / right bent crook according to claims 10-12.
[0050]
That is, the left and right curved saddle of claim 10 forms a curved groove having no flow gradient at the bottom of the saddle, and a drainage pipe connection port for connecting a drainage pipe having a pipe diameter of approximately 200 mm to both ends of the curved groove. A curved saddle provided with a heel body formed by projecting from the heel body and a gradient setting cylinder fitted and connected to the upper end opening of the heel body, the upper opening end of the gradient setting cylinder being the lower part It is inclined with respect to the opening end with a predetermined gradient greater than 1.2 / 100 determined according to the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end. When the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axes of the drain pipe connection ports at both ends of the curved groove have a gradient of approximately 1.2 / 100. It is characterized by that.
[0051]
The left and right curved saddle according to claim 11 is the left and right curved saddle according to claim 10, wherein the curved groove of the flange main body is formed in a substantially ¼ arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drain pipe connection port at the other end is approximately 90 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 1.7 / 100 with respect to the lower opening end. It is characterized by this.
[0052]
Further, the left and right curved saddle according to claim 12 is the left and right curved saddle according to claim 10, wherein the curved groove of the saddle main body is formed in a substantially 1/8 arc shape, and the central axis of the drain pipe connection port at one end thereof The depression angle with the central axis of the drainage pipe connection port at the other end is approximately 135 °, and the upper opening end of the gradient setting cylinder is inclined with a gradient of approximately 1.3 / 100 with respect to the lower opening end. It is characterized by this.
[0053]
In the left and right curved saddle of claim 10, when the saddle body is slightly tilted so that the upper opening end of the gradient setting cylinder is horizontal, the drainage pipe connection ports at both ends have drainage pipes with a pipe diameter of 200 mm. Since it has a gradient of approximately 1.2 / 100 equal to the appropriate flow gradient of the pipe, it becomes possible to easily connect and connect a drain pipe with a pipe diameter of 200 mm, and there is an error in the flow gradient of the drain pipe. The worry that causes
[0054]
The gradient of the upper opening end of the cylinder for setting the gradient is such that the center axis of the drain pipe connection ports at both ends of the curved groove is approximately 1.2 / 100 when the main body is tilted so that the upper opening end is horizontal. The slope T is determined according to the depression angle between the central axis of the drainage pipe connection port at one end and the central axis of the drainage pipe connection port at the other end. It is calculated by the approximate expression (4).
[0055]
T = [1.2 / sin (θ / 2)] / 100 (4)
As can be seen from this approximate expression (4), the gradient of the upper end opening of the gradient setting cylinder increases as the depression angle θ decreases, and the gradient decreases as the depression angle θ approaches 180 ° and becomes 1.2 / 100. Although it approaches, it does not become 1.2 / 100 or less. For 1.2 / 100 or less, even if the heel body is tilted so that the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drainage pipe connection port at both ends of the curved groove is a drainage pipe having a pipe diameter of 200 mm. The object of the present invention cannot be achieved because it will have a smaller gradient than the required 1.2 / 100 flow gradient.
[0056]
The curved groove is formed in a substantially ¼ arc shape like the left and right curved saddle of claim 11, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately. For 90 °, the gradient of the upper opening end of the gradient setting cylinder may be set to approximately 1.7 / 100 from the above approximate expression (4), and the upper opening end having such a gradient is When the heel body is tilted so as to be horizontal, an appropriate flow gradient is attached, and the central axis of the drain pipe connection ports at both ends has a gradient of approximately 1.2 / 100 which is equal to the flow gradient of the drain pipe having a pipe diameter of 200 mm. It will have.
[0057]
Further, the curved groove is formed in an approximately 1/8 arc shape like the left and right curved saddle of claim 12, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end Is approximately 135 °, it is sufficient to set the gradient of the upper opening end of the gradient setting cylinder to approximately 1.3 / 100 from the above approximate expression (4). When the heel body is tilted so that the ends are horizontal, an appropriate flow gradient is obtained, and the center axis of the drain pipe connection ports at both ends is approximately 1.2 / 100, which is equal to the flow gradient of a drain pipe having a pipe diameter of 200 mm. Has a gradient.
[0058]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.
[0059]
FIG. 1 is an exploded front view of a left and right bent rod according to an embodiment of the present invention, FIG. 2 is a plan view of the bent rod, FIGS. 3 and 4 are explanatory views of a method for installing the bent rod, and FIG. It is an explanatory view of the principle of a curved saddle.
[0060]
This embodiment is a 90 ° bent tube for connecting a drain pipe having a pipe diameter of 100 mm to the drain pipe connection port, and needs to give a 2/100 gradient to the central axis of the drain pipe connection port. Shows things.
[0061]
As shown in FIG. 1, the left and right 90 ° bent saddle is composed of a saddle body 1 and a gradient setting cylinder 2.
[0062]
As shown in FIGS. 1 and 2, a curved groove 1a having no flow gradient is formed in a substantially ¼ arc shape at the bottom of the ridge body 1, and pipes are formed at both ends of the curved groove 1a. A pair of socket-shaped drainage pipe connection ports 1b and 1c for connecting a drainage pipe having a diameter of 100 mm are formed so as to protrude from the side wall. Center axis L of drain pipe connection port 1b at one end (left end) of the curved groove _P And the central axis L of the drainage pipe connection port 1c at the other end (right end) of the curved groove _Q The depression angle θ is set to approximately 90 ° as shown in FIG. 2, and when an upstream and downstream drain pipe (not shown) having a pipe diameter of 100 mm is inserted into the drain pipe connection ports 1b and 1c, It can be connected at right angles.
[0063]
The upper end of the saddle body 1 is opened horizontally, and the gradient setting cylinder 2 is fitted and connected to the upper end opening 1d. In addition, an annular support leg 1e is formed on the bottom surface of the heel body 1, so that the installation stability of the heel body 1 is enhanced.
[0064]
On the other hand, as shown in FIG. 1, the gradient setting cylinder 2 is formed in a small-diameter cylinder portion 2 a in which the lower portion of the cylinder is fitted to the upper end opening 1 d of the bag main body 1. The upper opening end 2b of the gradient setting cylinder 2 is inclined with a gradient of about 2.8 / 100 with respect to the lower opening end 2c.
[0065]
Marks 2d and 1f are respectively formed on the outer surface of the gradient setting cylinder 2 and the outer surface of the upper end opening 1d of the bag body 1, and the gradient setting cylinders are arranged so that both the marks 2d and 1f are vertically overlapped. When the body 2 is fitted and connected to the upper end opening 1d of the bag main body 1, the slope of the upper opening end 2b becomes a slope that rises to the right or rises to the left. Is the left-right symmetric line L of the main body 1 (in other words, the central axis L of the drain pipe connection port 1b). _P And the central axis L of the drain pipe connection port 1c _Q And a symmetric position across the line L) that bisects the depression angle θ.
[0066]
In order to facilitate fitting and connecting work of the gradient setting cylinder 2 and positioning of the marks 2d and 1f, a pair of opposite handles 2e and 2e are formed on the outer surface of the gradient setting cylinder 2. Yes.
[0067]
In this case, as shown in FIG. 6, a pair of positioning projections 2f and 2f are formed opposite to each other on the outer surface of the small-diameter cylindrical portion 2a of the gradient setting cylinder 2, and the upper end opening 1d of the rod main body 1 is formed. A pair of concave grooves 1g, 1g facing each other is formed, and the convex strips 2f, 2f are fitted into the concave grooves 1g, 1g, whereby the gradient of the upper opening end 2b of the gradient setting cylinder 2 is increased. It is preferable to be able to position so as to have a slope that rises to the right or to the left, because the positioning of the marks 2d and 1f becomes unnecessary, and the slope setting cylinder 2 can be prevented from rotating after the positioning. .
[0068]
The positioning means for the gradient setting cylinder 2 is not limited to the above-mentioned convex 2f and concave groove 1g. For example, the outer peripheral surface of the small-diameter cylindrical portion 2a of the gradient setting cylinder 2 and the collar body 1 Various means can be employed, such as forming the inner peripheral surface of the upper end opening into an uneven surface that meshes with each other.
[0069]
The left and right curved saddle constructed as described above is installed at a right-angled bending point of the drainage pipe in the following manner.
[0070]
First, the drainage pipe connection port 1b at one end (left end) of the curved body 1 is used as the connection port for the upstream drainage pipe, and the drainage pipe connection port 1c at the other end of the curved groove (right end) is used as the connection port for the downstream drainage pipe. When used, as shown in FIG. 3, the marks 2d and 1f are aligned so that the gradient of the upper opening end 2b of the gradient setting cylinder 2 is a right-up gradient, and the cylinder 2 is attached to the bag body 1. In a state of fitting and connecting to the upper end opening 1d, placing the level 10 on the upper opening end 2b of the cylindrical body 2, and tilting the bag body 1 slightly to the right so that the upper opening end 2b is horizontal. Install.
[0071]
When the main body 1 is tilted in this way, an appropriate flow gradient is provided from the drainage pipe connection port 1b at one end (left end) of the curved groove toward the drainage pipe connection port 1c at the other end (right end), and drainage pipe connection ports at both ends. Center axis L of 1b and 1c _P , L _Q Both have a gradient t of approximately 2/100 equal to the proper flow gradient of the upstream and downstream drainage pipes of 100 mm diameter.
[0072]
That is, as shown in FIG. 5, a central axis L passing through the center P of the drain pipe connection port 1b at one end (left end). _P And the center axis L passing through the center Q of the drain pipe connection port 1c at the other end (right end) _Q If the orthogonal point is O and the length of PO and the length of OQ are S, the length of PQ is 2S · sin (θ / 2). L _P , L _Q In order to give each a constant gradient t, a line L connecting the centers P and Q _PQ It is necessary to give a gradient T approximately 2S / 2S · sin (θ / 2) times the gradient t, that is, a gradient T 1 / sin (θ / 2) times the gradient t.
[0073]
Therefore, when the gradient t of both central axes is 2/100, the line L connecting the centers P and Q _PQ Is given by T = [2 / sin (θ / 2)] / 100 as shown in the approximate expression (1), and when the depression angle θ is 90 °, the line L connecting the center P and the center Q _PQ Therefore, it is only necessary to give a gradient T of [2 / sin45 °] / 100, that is, a gradient T of approximately 2.8 / 100. _PQ If the gradient T of the two is set to approximately 2.8 / 100, both center axis lines L _P , L _Q Each of the gradients t has a gradient t of about 2/100.
[0074]
Thus, the central axis L of both drain pipe connection ports 1b and 1c _P , L _Q Both of them have a slope t of approximately 2/100 equal to the appropriate slope of the drainage pipes having a diameter of 100 mm on the upstream side and the downstream side, so that the drainage pipe can be easily inserted and connected. No errors occur in the pipe flow gradient.
[0075]
When the slope is properly set as described above and the drain pipe is connected, the height adjusting cylinder (not shown) is fitted to the gradient setting cylinder 2 from above and buried in the soil. Complete the piping work.
[0076]
On the other hand, when the drain pipe connection port 1b at one end (left end) is used as the connection port for the downstream drain pipe and the drain pipe connection port 1c at the other end (right end) is used as the connection port for the upstream drain pipe, The cylinder 2 is rotated by 180 °, and the marks 2d and 1f are aligned so that the gradient of the upper opening end 2b of the cylinder 2 is a leftward gradient as shown in FIG. 1 is fitted and connected to the upper end opening 1d, the level 10 is placed on the upper opening end 2b of the cylindrical body 2, and the bag body 1 is slightly tilted to the left so that the upper opening end 2b is horizontal. Install in condition.
[0077]
When the main body 1 is tilted in this way, an appropriate flow gradient is provided from the drain pipe connection port 1c at the other end (right end) of the curved groove toward the drain pipe connection port 1b at one end (left end). Center axis L of drain pipe connection ports 1b and 1c _P , L _Q Since both have a gradient t of approximately 2/100 equal to the flow gradient of the upstream and downstream drainage pipes, it becomes possible to easily connect the drainage pipes in the same manner as described above. No error occurs.
[0078]
If a mark (not shown) that can distinguish the upstream side and the downstream side is formed on the gradient setting cylinder 2, the cylinder 2 is erroneously fitted in the opposite direction by 180 ° and the opposite flow gradient is obtained. This is desirable because it has the advantage of not having to be attached.
[0079]
The 90 ° bent rod of the above embodiment connects a drain pipe having a pipe diameter of 100 mm to the drain pipe connection ports 1b and 1c, and the central axis L of the drain pipe connection ports 1b and 1c. _P , L _Q Therefore, the slope T of the upper opening end 2b of the gradient setting cylinder 2 is set to about 2.8 / 100, but a drain pipe having a pipe diameter of 125 mm is used. For left and right 90 ° bends connected to the drainage pipe connection port, and for which a gradient of 1.7 / 100 must be given to the central axis of the drainage pipe connection port, the upper opening end of the gradient setting cylinder The gradient T is T = [1.7 / sin (θ / 2)] / 100 as in the approximate expression (2). When θ is 90 °, the gradient T of the upper opening end of the gradient setting cylinder is as follows. Is set to 2.4 / 100.
[0080]
In addition, it is a 90 ° bend for both left and right connecting a drain pipe with a pipe diameter of 150 mm to the drain pipe connection port, and it is necessary to give a 1.5 / 100 gradient to the central axis of the drain pipe connection port. The gradient T of the upper opening end of the gradient setting cylinder is T = [1.5 / sin (θ / 2)] / 100 as in the approximate expression (3), and when θ is 90 °, the gradient is set. The gradient T at the upper opening end of the cylinder for use may be set to 2.1 / 100.
[0081]
Furthermore, it is necessary to give a gradient of 1.2 / 100 to the central axis of the drainage pipe connection port with a 90 ° bent rod for both left and right connecting a drainage pipe having a pipe diameter of 200 mm to the drainage pipe connection port. The gradient T of the upper opening end of the gradient setting cylinder is T = [1.2 / sin (θ / 2)] / 100 as in the approximate expression (4), and when θ is 90 °, the gradient is set. The gradient T at the upper opening end of the cylinder for use may be set to 1.7 / 100.
[0082]
FIG. 7 is an exploded front view of a left and right bent hook according to another embodiment of the present invention, and FIG. 8 is a plan view of the bent hook.
[0083]
This embodiment is a left and right 45 ° bent rod connecting a drain pipe having a pipe diameter of 100 mm to the drain pipe connection port, and it is necessary to give a 2/100 gradient to the central axis of the drain pipe connection port. Shows things.
[0084]
This left and right 45 ° bent rod is composed of a rod body 1 and a gradient setting cylinder 2. A curved groove 1a having no flow gradient is formed in a substantially 1/8 arc shape on the bottom of the rod body 1. Has been. At both ends of the curved groove 1a, socket-shaped drain pipe connection ports 1b and 1c for connecting drain pipes having a pipe diameter of 100 mm are formed so as to protrude from the side wall, and one end (left end) drain pipe connection Center axis L of mouth 1b _P And the central axis L of the drain pipe connection port 1c at the other end (right end) _Q And the included angle θ is 135 °. Further, the gradient setting cylinder 2 has an upper opening end 2b inclined with a gradient T of about 2.2 / 100 with respect to the lower opening end 2c.
[0085]
Since the other configuration is the same as that of the left and right 90 ° bending rod of the above-described embodiment, the same members are denoted by the same reference numerals in FIGS. 7 and 8 and description thereof is omitted.
[0086]
The left and right curved saddles having such a structure are also mounted on the gradient setting cylinder 2 so that the leveling body 1 is placed on the right or left side so that the upper opening end 2a of the cylinder 2 is horizontal. Is slightly inclined toward the drainage pipe connection port 1b at one end of the curved groove 1a toward the drainage pipe connection port 1c at the other end, or from the drainage pipe connection port 1c at the other end toward the drainage pipe connection port 1b at one end. Appropriate flow gradient is attached, and the central axis L of both drain pipe connection ports 1b and 1c _P , L _Q Each have a gradient t of approximately 2/100 equal to the proper flow gradient of a drain pipe having a diameter of 100 mm. This is the central axis L of both drain pipe connection ports 1b and 1c. _P , L _Q When the depression angle θ is 135 °, the length of the line connecting the centers P and Q of both drain pipe connection ports 1b and 1c is the central axis L _P , L _Q This is because it is 2 · sin 67.5 ° times the length (the length from the aforementioned centers P and Q to the intersection O), that is, approximately 1.8 times.
[0087]
Accordingly, the left and right curved bent rods are also connected to the central axis L of the drain pipe connection ports 1b and 1c. _P , L _Q Since the slope of the drain and the slope of the drain pipe coincide with each other, the drain pipe can be easily inserted and connected, and an error does not occur in the flow slope of the drain pipe.
[0088]
The 45 ° bent rod of this embodiment connects a drain pipe having a pipe diameter of 100 mm to the drain pipe connection ports 1b and 1c, and the central axis L of the drain pipe connection ports 1b and 1c. _P , L _Q Therefore, the slope T of the upper opening end 2b of the slope setting cylinder 2 is set to about 2.2 / 100, but a drain pipe having a pipe diameter of 125 mm is used. For both left and right 45 ° bends connected to the drainage pipe connection port, it is necessary to give a 1.7 / 100 gradient to the central axis of the drainage pipe connection port. The gradient T is T = [1.7 / sin (θ / 2)] / 100 as in the approximate expression (2). When θ is 135 °, the gradient T of the upper opening end of the gradient setting cylinder is as follows. Is set to 1.8 / 100.
[0089]
In addition, it is a 45 ° bend for both left and right connecting a drain pipe having a pipe diameter of 150 mm to the drain pipe connection port, and it is necessary to give a gradient of 1.5 / 100 to the central axis of the drain pipe connection port. The gradient T of the upper opening end of the gradient setting cylinder is T = [1.5 / sin (θ / 2)] / 100 as in the approximate expression (3), and when θ is 135 °, the gradient is set. The gradient T of the upper opening end of the cylinder for use may be set to 1.6 / 100.
[0090]
Furthermore, with a 45 ° bend for both left and right connecting a drain pipe with a pipe diameter of 200 mm to the drain pipe connection port, it is necessary to give a 1.2 / 100 gradient to the central axis of the drain pipe connection port. The gradient T of the upper opening end of the gradient setting cylinder is T = [1.2 / sin (θ / 2)] / 100 as in the approximate expression (4), and when θ is 135 °, the gradient is set. The gradient T of the upper opening end of the cylinder for use may be set to 1.3 / 100.
[0091]
As mentioned above, although the present invention has been described with reference to the embodiments of the 90 ° bent hook and the 45 ° bent hook for both left and right, the present invention is not limited to these, and can be applied to a hook having an arbitrary bent angle. is there. That is, even if the depression angle θ between the central axis of the drainage pipe connection port at one end of the curved groove of the main body and the central axis of the drainage pipe connection port at the other end of the curved groove depends on the diameter of the drainage pipe, When the heel body is tilted so that the upper opening end of the cylinder is horizontal by attaching the gradient T obtained by the above approximate equations (1) to (4) to the upper opening end of the gradient setting cylinder The gradient of the central axis of both drain pipe connection ports can be set appropriately.
[0092]
【The invention's effect】
In the case of connecting a drain pipe having a pipe diameter of 100 mm, the left and right bent rod of the present invention has a 2/100 gradient in which the central axis of both drain pipe connection ports is equal to an appropriate flow gradient of the drain pipe having a pipe diameter of 100 mm. In addition, in the case of connecting a drain pipe with a pipe diameter of 125 mm, the central axis of both drain pipe connection ports has a gradient of 1.7 / 100 equal to the appropriate flow gradient of the drain pipe with a pipe diameter of 125 mm. Further, in the case of connecting a drain pipe having a pipe diameter of 150 mm, the central axis of both drain pipe connection ports has a gradient of 1.5 / 100 which is equal to an appropriate flow gradient of the drain pipe having a pipe diameter of 150 mm. Furthermore, in the case of connecting a drain pipe having a pipe diameter of 200 mm, the central axis of both drain pipe connection ports has a gradient of 1.2 / 100 which is equal to an appropriate flow gradient of the drain pipe having a pipe diameter of 200 mm. The drain pipe at one end Since a proper flow gradient can be easily applied from the connecting port to the drain pipe connection port at the other end, or from the drain pipe connection port at the other end to the drain pipe connection port at one end, Plug connection work becomes easy, and there is a remarkable effect that there is no error in the flow gradient of the drain pipe. Also, since it is used for both left and right, there is an effect that the type of inventory is halved.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an exploded front view of a left and right curved saddle according to an embodiment of the present invention.
FIG. 2 is a plan view of the curved beak.
FIG. 3 is an explanatory view of a method for installing the bent rod.
FIG. 4 is an explanatory diagram of a method for installing the bent rod.
FIG. 5 is an explanatory diagram of the principle of the bending curve.
FIG. 6 is an exploded partial perspective view of a left and right curved saddle according to another embodiment of the present invention.
FIG. 7 is an exploded front view of a left and right bent rod according to still another embodiment of the present invention.
FIG. 8 is a plan view of the curved beak.
FIG. 9 is a front view of a conventional left / right curved saddle.
FIG. 10 is a plan view of a conventional left / right curved saddle.
FIG. 11 is an explanatory diagram of a conventional method for installing a left / right curved saddle.
FIG. 12 is an explanatory diagram of a problem of a conventional left / right curved bend.
[Explanation of symbols]
1 桝 body
1a Curved groove
1b, 1c Drain pipe connection port
1d Top end opening of 上端 body
2 Slope setting cylinder
2b Upper open end
2c Lower open end
L _P Center axis of drain pipe connection at one end
L _Q Center axis of drain pipe connection port at the other end
T The slope of the upper opening edge
t Gradient of central axis of drain pipe connection port
θ Angle between the central axis of the drain pipe connection at one end and the central axis of the drain pipe connection at the other end

Claims (12)

A bowl body formed with a curved groove having no flow gradient at the bottom of the bowl, and a drain pipe connection port for connecting a drain pipe having a pipe diameter of about 100 mm protruding from both sides of the curved groove from the side wall of the bowl. A bending rod having a gradient setting cylinder fitted and connected to the upper end opening of the main body,
The upper opening end of the gradient setting cylinder is determined according to the depression angle between the central axis of the drain pipe connection port at one end of the curved groove and the central axis of the drain pipe connection port at the other end with respect to the lower opening end 2 When the heel body is tilted so as to be inclined with a predetermined gradient greater than / 100 and the upper opening end of the gradient setting cylinder is horizontal, the central axes of the drain pipe connection ports at both ends of the curved groove are substantially A left and right curved curb characterized by having a gradient of 2/100. The curved groove of the ridge body is formed in a substantially ¼ arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 90 °, and the gradient 2. The left and right curved saddle according to claim 1, wherein an upper opening end of the setting cylinder is inclined with a gradient of approximately 2.8 / 100 with respect to the lower opening end. The curved groove of the ridge body is formed in a substantially 1/8 arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 135 °, and the gradient 2. The left and right curved saddle according to claim 1, wherein the upper opening end of the setting cylinder is inclined with a gradient of about 2.2 / 100 with respect to the lower opening end. A bowl body formed by forming a curved groove without a flow gradient at the bottom of the bowl, and a drain pipe connection port for connecting a drain pipe having a pipe diameter of about 125 mm at both ends of the curved groove, protruding from the side wall of the bowl. A bending rod having a gradient setting cylinder fitted and connected to the upper end opening of the main body,
The upper opening end of the gradient setting cylinder is determined in accordance with the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end with respect to the lower opening end. When tilting the main body so that the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drain pipe connection port at both ends of the curved groove is Also has a slope of approximately 1.7 / 100. The curved groove of the ridge body is formed in a substantially ¼ arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 90 °, and the gradient 5. The left and right curved saddle according to claim 4, wherein the upper opening end of the setting cylinder is inclined with a slope of about 2.4 / 100 with respect to the lower opening end. The curved groove of the ridge body is formed in a substantially 1/8 arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 135 °, and the gradient The left and right curved saddle according to claim 4, wherein the upper opening end of the setting cylinder is inclined with a slope of approximately 1.8 / 100 with respect to the lower opening end. A bowl main body formed by forming a curved groove without a flow gradient at the bottom of the bowl, and a drainage pipe connection port for connecting a drain pipe having a pipe diameter of approximately 150 mm at both ends of the curved groove, protruding from the side wall of the bowl. A bending rod having a gradient setting cylinder fitted and connected to the upper end opening of the main body,
The upper opening end of the gradient setting cylinder is determined in accordance with the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end with respect to the lower opening end. When the heel body is tilted with a predetermined gradient greater than 5/100 and the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drain pipe connection port at both ends of the curved groove The left and right curved curb characterized by having a slope of approximately 1.5 / 100. The curved groove of the ridge body is formed in a substantially ¼ arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 90 °, and the gradient 8. The left and right curved saddle according to claim 7, wherein the upper opening end of the setting cylinder is inclined with a slope of approximately 2.1 / 100 with respect to the lower opening end. The curved groove of the ridge body is formed in a substantially 1/8 arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 135 °, and the gradient 8. The left and right curved saddle according to claim 7, wherein the upper opening end of the setting cylinder is inclined with a slope of approximately 1.6 / 100 with respect to the lower opening end. A bowl body formed by forming a curved groove without a flow gradient at the bottom of the bowl, and having a drain pipe connection port connecting a drain pipe having a pipe diameter of about 200 mm at both ends of the curved groove, protruding from the side wall of the bowl. A bending rod having a gradient setting cylinder fitted and connected to the upper end opening of the main body,
The upper opening end of the gradient setting cylinder is determined in accordance with the depression angle between the central axis of the drainage pipe connection port at one end of the curved groove and the central axis of the drainage pipe connection port at the other end with respect to the lower opening end. When the heel body is inclined with a predetermined gradient greater than 2/100 and the upper opening end of the gradient setting cylinder is horizontal, the central axis of the drain pipe connection port at both ends of the curved groove is The left and right curved curb characterized by having a slope of approximately 1.2 / 100. The curved groove of the ridge body is formed in a substantially ¼ arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 90 °, and the gradient 11. The left and right curved saddle according to claim 10, wherein the upper opening end of the setting cylinder is inclined with a slope of approximately 1.7 / 100 with respect to the lower opening end. The curved groove of the ridge body is formed in a substantially 1/8 arc shape, and the depression angle between the central axis of the drain pipe connection port at one end and the central axis of the drain pipe connection port at the other end is approximately 135 °, and the gradient The left and right curved saddle according to claim 10, wherein the upper opening end of the setting cylinder is inclined with a slope of approximately 1.3 / 100 with respect to the lower opening end.

Images