JP4130902B2 - Universal pipe joint - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a universal pipe joint, and more particularly, to a universal pipe joint in which a connection angle between an inlet of a drainage pipe and an inflow pipe can be adjusted.
[0002]
[Prior art]
Conventionally, as a pipe joint for adjusting a connection angle when connecting pipes or an inflow pipe of a drainage pipe and an inflow pipe, a universal pipe in which a spherical receiving member and a spherical differential member are rotatably coupled. Joints are widely used (see, for example, Patent Document 1).
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 6-47190 [0004]
[Problems to be solved by the invention]
However, when the conventional universal pipe joint is used for connection between the inlet of the drainage and the inflow pipe, if the gradient of the inflow pipe increases, as shown in FIG. In addition, since the concave portion is formed on the bottom side of the spherical receiving member, there is a problem that filth in the drainage stays and solidifies in the inner portion and hinders the flow of the sewage.
[0005]
For this reason, in the device described in Patent Document 1, the concave portion is not formed by providing a stopper on the spherical receiving member to restrict the rotation range of the spherical differential member. However, there is a problem that the connection angle between the pipes or between the inlet and the inflow pipe is limited as compared with a general universal pipe joint.
[0006]
Then, this invention aims at providing the universal pipe joint which can adjust a connection angle similarly to the conventional universal pipe joint, preventing formation of the recessed part where water and dirt accumulate in a connection part. .
[0007]
[Means for Solving the Problems]
In order to achieve the above object, a universal pipe joint of the present invention includes a spherical receiving member having a spherical inner surface portion having a larger diameter than the tubular body at an end of the tubular body, and the tubular body of the spherical receiving member. A connecting tube whose tip is protruded into the spherical inner surface portion, and a spherical outer surface portion corresponding to the spherical inner surface portion of the spherical receiving member, and an inflow tube insertion portion into which the inflow tube is inserted. A universal pipe joint including a moving cylinder, wherein the axis of the inflow pipe insertion portion is eccentric upward with respect to the axis of the connection cylinder, and the tip opening edge of the connection cylinder has a lower portion in the direction of the inflow pipe It is characterized in that it is inclined so as to protrude and the both side surface portions are expanded from the outer diameter of the inflow pipe. Furthermore, the universal pipe joint of the present invention has an inner diameter at which the pipe body is joined to an outer peripheral surface of an inlet provided in a drainage basin to which the universal pipe joint is attached, and the connecting tube is provided on the inlet of the inlet. It has an outer diameter to be joined to the inner peripheral surface.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a longitudinal sectional view showing a state in which the universal pipe joint of the present invention is mounted on a water tank, and FIGS. 2 and 3 are longitudinal sectional views showing a state in which an inflow pipe is inserted into the universal pipe joint. FIG. 3 shows a state in which the inflow pipes are connected in a straight line, and FIG. 3 shows a state in which an inflow pipe having a downward slope in the direction of the water tank is connected. 4 and 5 are cross-sectional views showing a state where the inflow pipe is inserted into the universal pipe joint. FIG. 4 shows a state where the inflow pipe is connected in a straight line, and FIG. 5 shows an inflow having an angle in the horizontal direction. The state where the pipes are connected is shown.
[0009]
This universal pipe joint 11 includes a spherical receiving member 14 joined to the inlet 13 of the drain 12, a connecting cylinder 15 provided in the spherical receiving member 14, and an inlet pipe 16 having the same diameter as the connecting cylinder 15. And a rotating cylinder 17 for inserting and connecting. The spherical receiving member 14 has a tubular body 18 joined to the outer peripheral surface of the inlet 13 and a spherical inner surface portion 19 having a larger diameter than the tubular body 18 provided at the end of the tubular body 18. is doing. The connection tube 15 has an outer diameter at which the base portion 15 a is joined to the inner peripheral surface of the inflow port 13, and the tip on the inflow pipe 16 side projects into the central portion of the spherical inner surface portion 19. It has become.
[0010]
The rotating cylinder 17 includes an outer cylinder 21 having a spherical outer surface portion 20 corresponding to the spherical inner surface portion 19 and an inner cylinder 22 inserted and fixed in the outer cylinder 21. Is attached with a ring-shaped packing 23 that seals between the spherical inner surface portion 19 in a rotatable state. A ring-shaped packing 24 is also attached to the inner periphery of the inner cylinder 22 that serves as an inflow pipe insertion portion. The ring-shaped packing 24 allows the inflow pipe 16 to move in the axial direction in the inner cylinder. It is sealed. In this embodiment, the surface connecting the outer peripheral ends of the plurality of ribs provided on the outer periphery of the outer cylinder 21 is made spherical. However, the outer peripheral surface of the outer cylinder 21 may be formed in a spherical shape. . Further, the rotating cylinder 17 can be integrally formed without being divided into the outer cylinder 21 and the inner cylinder 22.
[0011]
Further, the axis 15C of the connecting cylinder 15 and the axis 17C of the rotating cylinder 17 into which the inflow pipe 16 is inserted are in a state in which the axis 17C is eccentric from the axis 15C. This eccentric amount is normally set to a dimension corresponding to the thickness of the inflow pipe 16, and the lower outer peripheral surface 16 a of the inflow pipe 16 inserted into the rotating cylinder 17 is the lower inner peripheral surface 15 b of the connection cylinder 15. Is set to correspond to the position.
[0012]
As a whole, the opening edge of the connecting tube 15 has an inclined surface with the lower part protruding in the direction of the inflow pipe 16, and the upper side end surface 32 above the step portion 31 provided in the middle part in the vertical direction is an inflow pipe. 16 so that the angle adjustment range of 16 can be enlarged, and the lower end surface 33 below the step portion 31 flows into the inflow pipe 16 so that no gap is generated. It is in a state protruding to the tube side. Further, on both side surface portions of the distal end portion of the connection tube 15, in order to be able to insert the distal end of the inflow tube 16, a diameter-expanded portion 34 that is larger than the outer diameter of the inflow tube 16 is provided (see FIG. 4, see FIG.
[0013]
In the universal pipe joint 11 formed in this way, as shown in FIGS. 2 and 4, when the axis (17C) of the inflow pipe 16 is parallel to the axis (15C) of the inlet 13, the inflow pipe 16 Is inserted into the inner cylinder 22 of the rotating cylinder 17 until the open end of the inflow pipe 16 comes into contact with the upper end surface 32 of the connecting cylinder 15. At this time, the lower half of the tip of the inflow pipe 16 enters the lower side end face 33 from the enlarged diameter portion 34 of the connection cylinder 15, and the outer peripheral surface of the lower end of the inflow pipe 16 is the inner periphery of the lower end of the connection cylinder 15. It will be in the state mounted on the surface. Therefore, the drainage flowing from the inflow pipe 16 in the direction of the drainage basin 12 flows smoothly from the inflow pipe 16 to the drainage basin 12 through the connection cylinder 15 without flowing out into the spherical receiving member 14.
[0014]
When a water gradient is set in the inflow pipe 16 and there is a downward gradient in the direction of the drain 12, the rotating cylinder 17 is rotated in the vertical direction with respect to the spherical receiving member 14 as shown in FIG. In this state, the inflow pipe 16 is inserted into the inner cylinder 22 until the open end of the inflow pipe 16 comes into contact with the connection cylinder 15. At this time, the upper end face 32 of the connection tube 15 is retreated, the lower end face 33 is protruded, and the enlarged diameter portions 34 are provided on both side portions, so that the inflow pipe regardless of the inclination angle of the inflow pipe 16. The lower end of 16 is surrounded by the enlarged diameter portion 34, and the lower open end of the inflow pipe 16 is in contact with the inner peripheral surface of the lower end of the connecting tube 15.
[0015]
Since the angle adjustment range of a normal universal pipe joint is about 15 degrees, the lower end of the open end of the inflow pipe 16 contacts the inner peripheral surface of the lower end of the open end of the connection tube 15 when the maximum bending angle is 15 degrees. If the protruding amount of the lower part of the lower side end face 33 and the retracted amount of the upper side end face 32 are set so as to be in contact with each other, the lower opening end of the inflow pipe 16 is connected to the tip of the connecting tube 15 even at a bending angle of 15 degrees or less. It can be in the state contact | abutted on the lower inner peripheral surface.
[0016]
Further, when the inflow pipe 16 has a horizontal angle with respect to the inlet 13, as shown in FIG. 5, the rotating cylinder 17 is rotated in the horizontal direction with respect to the spherical receiving member 14. In this state, the inflow pipe 16 is inserted into the inner cylinder 22 until the open end of the inflow pipe 16 comes into contact with the connection cylinder 15. In the case of bending in the horizontal direction, the position of the opening end of the inflow pipe 16 hardly changes on the inner side in the bending direction as compared with the parallel state, and the outer side in the bending direction is close to the tip of the connecting tube 15. Even in this case, when the maximum bending angle is 15 degrees, the lower half of the open end of the inflow pipe 16 is surrounded by the enlarged diameter portion 34 of the connection cylinder 15, so that In the connecting portion with the connecting cylinder 15, there is no gap that drains out at least in the lower half of both.
[0017]
Further, when the upstream side of the inflow pipe 16 is inclined obliquely upward with respect to the inflow port 13, the positional relationship between the connection tube 15 and the inflow pipe 16 is the maximum bending angle in the vertical direction shown in FIG. 3. 5, the gap between the inflow pipe 16 and the connecting cylinder 15 is not generated between the inflow pipe 16 and the connection cylinder 15. Therefore, even if the inflow pipe 16 has various angles with respect to the inflow port 13 within the range of the set maximum bending angle, the spherical receiving member 14 is interposed between the inflow pipe 16 and the connection tube 15. Since the drainage does not flow out into the inside, the stagnation of the filth at the spherical receiving member 14 does not occur, and the flow of the drainage is not hindered.
[0018]
Here, since the inflow port 13 of the drainage basin 12 is usually formed with the size of the receiving port corresponding to the diameter of the inflow pipe 16, the pipe body 18 of the spherical receiving member 14 is connected to the inflow port 13. When the base of the connecting tube 15 is joined in the same manner as the joining of the normal receiving port and the outlet, the pipe body 18 and the connecting tube 15 are inserted into the inner peripheral surface of the inflow port 13 so as to overlap with each other. become. If this is the case, the connecting cylinder 15 located on the inner peripheral side has a smaller diameter than the inflow pipe 16, so that the tip of the inflow pipe 16 cannot be inserted into the connecting cylinder 15. Therefore, conventionally, the receiving portion of the inflow port 13 is widened so that the connection tube 15 having the same size as the inflow tube 16 can be joined to the inner peripheral side of the tube body 18. However, since this processing is separately performed on the drainage basin after molding, it is inefficient and time-consuming.
[0019]
Therefore, as shown in the present embodiment, the inner diameter of the tubular body 18 in the spherical receiving member 14 is set to be joined to the outer peripheral surface of the inflow port 13, and the connection cylinder 15 is connected to the inner peripheral surface of the inflow port 13. By forming the base portion so as to be joined, the connection tube 15 having the same size as the inflow pipe 16 can be joined to the inflow port 13 without expanding the inflow port 13. Accordingly, a spherical receiving member 14 having a tubular body 18 having an inner diameter corresponding to the outer diameter of the standard-size inlet 13 and a connecting cylinder 15 having an outer diameter corresponding to the inner diameter of the standard-size inlet 13 are injection-molded in advance. Thus, the universal pipe joint 11 having the above-described configuration can be easily and reliably mounted without processing a standard-size drainage basin.
[0020]
【The invention's effect】
As described above, according to the universal pipe joint of the present invention, the drainage from the inflow side piping can be smoothly flowed to the outflow side, and the drainage does not flow out to the spherical port member. It is possible to prevent waste water and filth from staying in the member. Moreover, it is not necessary to widen the inlet of the drainage basin by joining the tubular body of the spherical receiving member to the outer peripheral surface of the inlet and connecting the connecting tube to the inner peripheral surface of the inlet.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a state in which a universal pipe joint of the present invention is mounted on a water tank.
FIG. 2 is a longitudinal sectional view showing a state where an inflow pipe is linearly connected to a universal pipe joint.
FIG. 3 is a longitudinal cross-sectional view showing a state in which an inflow pipe having a downward slope in the direction of a water supply tank is connected to a universal pipe joint.
FIG. 4 is a cross-sectional view showing a state in which an inflow pipe is linearly connected to a universal pipe joint.
FIG. 5 is a cross-sectional view showing a state in which an inflow pipe having an angle in the horizontal direction is connected to a universal pipe joint.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Universal pipe joint, 12 ... Drainage tank, 13 ... Inflow port, 14 ... Spherical receptacle member, 15 ... Connection pipe | tube, 15C ... Axis line, 16 ... Inflow pipe | tube, 17 ... Rotating pipe | tube, 17C ... Axis line, 18 ... Pipe , 19 ... spherical inner surface part, 20 ... spherical outer surface part, 21 ... outer cylinder, 22 ... inner cylinder, 23, 24 ... ring-shaped packing, 31 ... stepped part, 32 ... upper side end face, 33 ... lower side end face, 34 ... expanded part

Claims (2)

A spherical receiving member having a spherical inner surface portion having a diameter larger than that of the tubular body at an end portion of the tubular body, and a connecting cylinder inserted into the tubular body of the spherical receiving member and having a tip projecting into the spherical inner surface portion; A universal pipe joint having a spherical outer surface portion corresponding to the spherical inner surface portion of the spherical receiving member, and a rotating cylinder having an inflow tube insertion portion into which the inflow tube is inserted, The axis of the inflow pipe insertion portion is eccentric upward with respect to the axis of the cylinder, the tip opening edge of the connection cylinder is inclined so that the lower part protrudes in the direction of the inflow pipe, and both side surface portions are A universal pipe joint that is expanded from the outer diameter of the inflow pipe. The tubular body has an inner diameter to be joined to an outer peripheral surface of an inflow port provided in a drainage basin to which a universal pipe joint is attached, and the connection tube has an outer diameter to be joined to an inner peripheral surface of the inflow port. The universal pipe joint according to claim 1, wherein:

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