JP5017011B2 - Universal pipe joint - Google Patents

Description

  The present invention relates to a universal pipe joint, and more particularly, to a universal pipe joint capable of adjusting a connection angle when connecting pipes or an inflow pipe of a drainage pipe and an inflow pipe.

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. As such a universal pipe joint, the pipe axis of the inflow pipe connected to the spherical receiving member is directed upward with respect to the pipe axis of the connecting cylinder which is inserted into the spherical receiving member and the tip protrudes into the spherical inner surface portion. In addition to being eccentric, the lower end of the opening edge of the connecting tube is inclined so as to protrude in the direction of the inflow pipe, and the both end portions of the front end of the connecting cylinder are expanded from the outer diameter of the inflow pipe. (For example, refer to Patent Document 1).
JP 2004-332788 A

  However, in the universal pipe joint described in Patent Document 1, since the insertion amount of the inflow pipe into the spherical outlet member (rotating cylinder) differs depending on the connection angle between the spherical receiving member and the inflow pipe, Had to make length adjustments. Further, when the inflow pipe moves due to an earthquake or ground deformation, there is a possibility that a gap is generated in the universal pipe joint.

  Therefore, the present invention allows a wide adjustment range of the connection angle while preventing the formation of a recess in which water or dirt accumulates in the connection part, and does not require adjustment of the length of the pipe connected to the universal pipe joint. It aims at providing the universal pipe joint which can respond also to.

  In order to achieve the above object, a universal pipe joint of the present invention is a universal pipe joint in which a spherical receiving member having a spherical inner surface portion and a spherical outlet member having a spherical outer surface portion are rotatably coupled. The mouth member includes a receiving-side tube portion, a spherical receiving portion provided at one end of the receiving-side tube portion and having a spherical inner surface having a larger diameter than the receiving-side tube portion, and the receiving port A receiving-side connecting tube that is inserted into the side tube body and has a tip protruding inward of the spherical receiving portion, and the spherical differential member has a pipe connection receiving port on the anti-spherical receiving member side. A difference-portion tube portion, a spherical difference-portion portion provided at one end of the difference-portion tube portion and having a spherical outer surface portion corresponding to the spherical inner surface portion of the spherical reception portion, and the difference-portion tube A receptacle-side connecting tube that is inserted into the body part and has a tip projecting inward of the spherical receptacle part, the receptacle-side tube part, the spherical receptacle part, and the receptacle-side connection The tube shafts of the spherical port portion are on the same straight line, and the tube shafts of the spherical port portion are arranged on the same straight line. Eccentric to decenter the tube shaft of the receiving side tube portion and the tube shaft of the opening side tube portion, and the outer peripheral surface of the front end of the connecting port side connecting tube It is characterized by being brought into sliding contact with the inner peripheral surface of the tip.

  According to the universal pipe joint of the present invention, since the liquid-tightness of the spherical receiving member and the spherical connecting member is performed by sliding contact between the receiving side connecting tube and the connecting port connecting tube, the spherical connecting member is connected to the spherical connecting member. It is not necessary to adjust the length of the piping to be performed, and piping construction using a universal pipe joint can be easily performed.

  1 and 2 show a first embodiment of a universal pipe joint according to the present invention. FIG. 1 is a cross-sectional view showing a universal pipe joint in a straight state, and FIG. 2 is a cross-sectional view showing a universal pipe joint in an angle-adjusted state. It is.

  This universal pipe joint is a universal pipe joint for connecting a rib pipe having a rib on the outer periphery, and is capable of rotating a spherical receiving member 11 having a spherical inner surface portion 11a and a spherical differential member 21 having a spherical outer surface portion 21a. It is connected in a state. The spherical receiving member 11 is integrally provided at one end of the receiving-side tube part 12 and the spherical inner surface part having an inner diameter larger than the inner diameter of the receiving-side tube part 12. A spherical receiving portion 13 having 11a and a receiving side connecting tube 14 which is inserted into the receiving side tubular body portion 12 and protrudes inwardly from the spherical receiving portion 13, and these receiving ports are formed. The tube axes of the side tube body portion 12, the spherical receiving portion 13 and the receiving side connecting tube 14 are provided on the same straight line C1. The receiving-side connecting tube 14 has a base outer peripheral surface 14a fixed to the inner peripheral surface of the receiving-side tube body 12 in a liquid-tight state, and the distal end surface of the receiving-side connecting tube 14 is provided with a universal pipe joint. The tip lower portion 14b arranged sometimes below is an inclined surface projecting toward the spherical receiving member 11 as compared with the tip upper portion 14c arranged upward.

  The spherical opening member 21 is provided at one end of the opening side tube portion 22 and the opening side tube portion 22, and the spherical outer surface portion 21 a corresponding to the spherical inner surface portion 11 a of the spherical receiving portion 13. And a spherical connecting portion 24 which is inserted into the connecting tube portion 22 and has a tip projecting inwardly of the spherical connecting portion 23. A packing mounting groove 25 is provided on the outer peripheral surface of the. The insertion port side connecting cylinder 24 has a base outer peripheral surface 24 a fixed to the inner peripheral surface of the distal end side (receiving port side) of the insertion port side tube portion 22 in a liquid-tight state. A pipe connection receiving port 26 for inserting and connecting a rib pipe is formed from the end 24 b to the proximal end opening side (anti-spherical receiving member 11 side) of the differential port side tube body part 22. Furthermore, the outer peripheral surface 24a of the base portion of the connecting port side connecting tube 24 is formed to have an outer diameter equal to the inner diameter of the connecting port side tube portion 22, and the tip connecting portion 24c protruding inwardly of the spherical connecting portion 23 has the receiving portion. The outer diameter is the same as the inner diameter of the mouth-side connecting cylinder 14, or is larger than the inner diameter of the receiving-side connecting cylinder 14 and smaller than the outer diameter of the receiving-side connecting cylinder 14, as shown in FIG. When the universal pipe joint is in a straight line state, the lower half outer peripheral surface of the connecting port side connecting cylinder 24 is set to be placed on the lower half inner peripheral surface of the receiving port connecting cylinder 14 Yes.

  In addition, a fitting tube portion 22a in a state of being displaced in a downward direction when the universal pipe joint is installed is provided on the distal end side of the portion on the tube side portion 22 where the tube connecting portion 24 is fixed. In addition, a spherical opening 23 is fitted on the outer periphery of the fitting tube portion 22a. Therefore, the spherical port portion 23 is in a state in which the tube axis C2 is eccentrically downward when the universal pipe joint is installed with respect to the straight line C3 through which the tube shaft of the port side tube portion 22 and the port side connecting tube 24 passes. become. Furthermore, a stopper step 22b that defines the insertion position of the connecting port side connecting cylinder 24 is formed on the upper base portion of the fitting cylinder part 22a as the fitting cylinder part 22a is eccentrically formed.

  In this universal pipe joint, the receiving-side connecting tube 14 oriented in a predetermined direction is inserted into the receiving-side tube body 12 from the opening of the spherical receiving portion 13, and the insertion end (base end) is the receiving-side tube. The spherical receiving member 11 is formed by being fixed to the inside of the outlet side tubular body portion 22 in a state of being in contact with the stopper step portion 12a provided on the inner periphery of the portion 12, and the spherical opening portion 23 is fitted. The outer side connecting cylinder 24 is inserted in the predetermined direction from the pipe connection receiving port 26 side of the outlet side tube body part 22 and is fixed to the outer periphery of the cylinder part 22a by the stopper step part 22b. After the spherical insertion member 21 is formed by positioning and fixing, a spherical insertion portion 23 in which a ring-shaped packing (not shown) is mounted in the packing mounting groove 25 is press-fitted into the spherical receiving portion 13 and connected. It is manufactured by doing.

  As shown in FIG. 1, the linear joint in the straight state is below the straight line C <b> 3 where the tube axis C <b> 2 of the spherical port portion 23 passes through the tube axis of the port side tube portion 22 and the port side connection tube 24. Since the spherical inner surface portion 11a and the spherical outer surface portion 21a are concentric with each other, the tube axis C2 is in a state coincident with the straight line C1 through which the tube shaft of the spherical receiving member 11 passes. The straight line C3 through which the tube axis of the tubular body portion 22 and the connecting port side connecting cylinder 24 passes is in a state of being eccentric upward with respect to the straight line C1 through which the tube axis of the spherical receiving member 11 passes. Then, by appropriately setting the amount of eccentricity and the outer diameter of the distal end connecting portion 24c of the outlet side connecting tube 24 and the inner diameter of the receiving side connecting tube 14, the receiving side connecting tube whose tip surface is inclined. 14, the tip end of the tip connection portion 24 c comes into contact with the top end portion 14 c of the tip 14, and the bottom half of the tip connection portion 24 c is in fluid-tight sliding contact with the bottom half of the receiving-side connection tube 14. As a result, the spherical receiving member 11 and the spherical opening member 21 are connected to each other without a gap, and the pipe connected to the spherical opening member 21 disposed on the liquid inflow side is directed to the spherical receiving member 11. The liquid flows smoothly.

  When a water gradient is provided in the pipe connected to the spherical outlet member 21, that is, as shown in FIG. 2, the tube axis (straight line C <b> 3) of the spherical outlet member 21 has a downward slope toward the spherical outlet member 11. In the case of adjusting the angle, the spherical opening 23 rotates in the spherical receiving section 13, and as the spherical opening 23 rotates, the distal end connecting portion 24 c of the connecting port connecting tube 24 is The lower side moves in the direction of the distal end of the receptacle-side connecting cylinder 14, and the upper side of the distal end connection portion 24c moves in the direction of entering the interior of the receptacle-side connecting cylinder 14.

  At this time, by appropriately setting the lengths of the receiving-side connecting tube 14 and the tip connecting portion 24c, the lower half of the tip connecting portion 24c is connected to the inner periphery of the lower half of the receiving-side connecting tube 14. Sliding while maintaining the liquid-tight state, the tip end of the tip connecting portion 24c is inserted into the receiving side connecting tube 14 obliquely. In addition, by forming the tip having a tapered surface on the outer surface of the tip end portion of the tip connecting portion 24c, the tip connecting portion 24c can be easily inserted into the receiving side connecting tube 14 and rotated. The sliding resistance at the time can be reduced. Furthermore, since the tip end surface of the receiving end side connecting tube 14 is formed by an inclined surface with the tip end upper portion 14c receding to the base side, the tip end upper portion 14c of the receiving end side connecting tube 14 turns the tip end connecting portion 24c. The rotation angle of the spherical opening member 21 with respect to the spherical receiving member 11 can be increased. In addition, since the positional relationship between the outlet-side tube portion 22 and the outlet-side connecting tube 24 in the spherical outlet member 21 does not change, the length of the pipe connection receiving port 26 does not change, and the spherical outlet It is not necessary to adjust the length of the pipe connected to the member 21, and even if the pipe connected to the pipe connection receiving port 26 moves due to an earthquake or ground fluctuation, a gap or a step is generated in the universal pipe joint. No, good liquid permeability can be maintained.

  3 and 4 show a second embodiment of the universal pipe joint of the present invention. FIG. 3 is a cross-sectional view showing the straight pipe joint, and FIG. 4 is a cross-section showing the angle-adjusted universal pipe joint. FIG. In the following description, the same components as those of the universal pipe joint shown in the first embodiment are given the same reference numerals, and detailed description thereof is omitted.

  In the universal pipe joint shown in the present embodiment, the receiving-side tube part 12 and the spherical receiving part 13 in the spherical receiving member 11 are formed separately, and the spherical receiving part is formed on the outer periphery of the distal end of the receiving-side pipe part 12. The mouth portion 13 is externally fitted and fixed. Further, in the spherical port member 21, the inner diameter of the port side tube portion 22 and the outer diameter and inner diameter of the port side connecting tube 24 are set to a normal pipe without ribs connected to the spherical port member 21. In addition to setting the corresponding dimensions, an annular recess 27 is provided on the inner periphery of the pipe connection receptacle 26 for attaching a ring-shaped packing.

  Thus, the basic structures of the spherical receiving member 11 and the spherical differential member 21 in the universal pipe joint are not changed, and the shapes of the receiving side tubular portion 12 and the differential opening side tubular portion 22 to which the pipe is connected are changed. Various settings can be made according to the conditions of the pipes to be connected. Further, as described in Patent Document 1, the spherical receiving member 11 can be integrally formed with a drainage basin.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the 1st example of a universal pipe joint of this invention, and shows the universal pipe joint of a linear state. It is sectional drawing which similarly shows the universal pipe joint of an angle adjustment state. The 2nd example of the universal pipe joint of this invention is shown, and is sectional drawing which shows the universal pipe joint of a linear state. It is sectional drawing which similarly shows the universal pipe joint of an angle adjustment state.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Spherical receptacle member, 11a ... Spherical inner surface part, 12 ... Receptacle side tube part, 12a ... Stopper step part, 13 ... Spherical receptacle part, 14 ... Receptacle side connection cylinder, 14a ... Base outer peripheral surface, 14b ... Lower end of tip, 14c ... Upper end of tip, 21 ... Spherical slot member, 21a ... Spherical outer surface part, 22 ... Tender tube part, 22a ... Fitting cylinder part, 22b ... Stopper step part, 23 ... Spherical slot part , 24 ... Connecting port side connection cylinder, 24a ... Base outer peripheral surface, 24b ... Base end, 24c ... Tip connection part, 25 ... Packing mounting groove, 26 ... Pipe connection receiving port, 27 ... Annular recess

Claims (1)

  In a universal pipe joint in which a spherical receiving member having a spherical inner surface portion and a spherical differential member having a spherical outer surface portion are rotatably coupled, the spherical receiving member includes a receiving-side tube portion and the receiving port. A spherical receiving portion that is provided at one end of the side tube portion and has a spherical inner surface that is larger in diameter than the receiving side tube portion, and a tip that is inserted into the receiving side tube portion and has a spherical receiving portion. An inlet-side connecting tube projecting inward, and the spherical port member includes a port-side tube portion having a port for pipe connection on the anti-spherical port member side, and the port-side tube body A spherical slot having a spherical outer surface corresponding to the spherical inner surface of the spherical receptacle, and a tip inserted into the differential tube portion and the tip of the spherical socket is provided at one end of the spherical receptacle. An outlet-side connecting tube projecting in the direction, and each tube axis of the receiving-side tube portion, the spherical receiving portion and the receiving-side connecting tube is on the same straight line, And each tube axis of the connecting port side connecting tube is on the same straight line, and the tube shaft of the spherical port portion is eccentric with respect to the straight line, and the tube shaft of the receiving port side tube portion and the connecting port A universal pipe joint characterized in that the tube shaft of the side tube portion is eccentric and the outer peripheral surface of the front end of the connecting port side connecting tube is in sliding contact with the inner peripheral surface of the front end of the receiving side connecting tube.

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