JP7337346B2 - Joint member - Google Patents

Description

TECHNICAL FIELD The present invention relates to a joint member attached to a drain pipe.

As a joint member connected to a drain pipe, as disclosed in Patent Document 1, there is known a structure having a valve element inside and a backflow prevention function to prevent backflow of fluid from the downstream side. In addition, the joint member described in Patent Document 1 is connected to a drain pipe for discharging drain water generated with the use of facility equipment such as refrigerators and air conditioners, and the drain pipe is arranged in a substantially vertical direction. It is a vertical pipe that is installed or a horizontal pipe that is arranged in a substantially horizontal direction.
The valve body is in contact with the valve seat when no water is drained, and prevents backflow of odors, waste water (fluid, etc.), or pests from the downstream side. Incidentally, when the waste water is discharged from the upstream side, the water discharge channel is temporarily opened by the waste water, and the waste water is discharged to the downstream side. On the other hand, when a backflow of fluid occurs from the downstream side, a stress is applied to the valve body in the direction of being pressed against the valve seat, thereby keeping the drainage channel closed. In addition, the joint member has an inspection opening and a closing portion that closes the inspection opening. By removing the closing portion, it is possible to remove the valve body from the inspection opening and clean the inside of the joint member. ing.

JP 2013-155583 A

The joint member has a water stop part (packing) on the upper surface of the insertion part arranged inside the joint body from the inspection port, and the water stop part is provided with a contact surface formed inside the joint body from below. It is configured such that the contact causes all the waste water to flow into the valve body.
Here, even if the valve body has the function of preventing backflow, if the water stop portion and the contact portion are not in watertight contact, odors, wastewater, and pests on the downstream side will flow back to the upstream side. , there is a possibility that the function as a backflow prevention device cannot be achieved. Therefore, the watertight contact between the water stop portion and the contact portion of the joint body greatly affects the function of the joint member.

The present invention has been made in view of the above problem, and an object of the present invention is to improve the watertightness between the water stop portion and the contact surface of the joint member.

The present invention according to claim 1 is a joint member attached to a drainage pipe,
a joint body to which a tubular body is connected at an end;
an inspection hole formed in the wall surface of the joint body;
a blocking part that blocks the inspection opening;
Equipped with an insertion part that is placed in the joint body from the inspection port,
The joint body has a storage chamber for storing the insertion portion therein, and a contact surface formed in the inner surface of the storage chamber in the circumferential direction,
The insertion part has a first water stop part on the outer surface,
The first water stop portion is a joint member characterized by watertight contact with the contact surface and the inner surface of the stepped portion .

The present invention according to claim 2 is a joint member attached to a drainage pipe,
a joint body to which a tubular body is connected at an end;
an inspection hole formed in the wall surface of the joint body;
a blocking portion that blocks the inspection port;
comprising an insertion portion arranged in the joint body from the inspection port,
The joint body includes a storage chamber for storing the insertion portion therein, a contact surface formed in the inner surface of the storage chamber in the circumferential direction, and guide portions formed on the upper and lower surfaces of the contact surface. have
The insertion portion has a first water stop portion that watertightly contacts the contact surface on the outer surface,
The first water stop portion applies stress to the contact surface toward the radially outer side of the joint member,
The joint member is characterized in that upper and lower surfaces of the outer side surface of the insertion portion form a shape that matches the guide portion in a side view.

According to a third aspect of the present invention, there is provided the joint member according to the first or second aspect, wherein the insertion portion has a valve element for preventing reverse flow of fluid.

According to a fourth aspect of the present invention, the inspection port is watertightly closed by a second water stop portion attached to the closing portion. It is a joint member according to one.

According to the joint member of the present invention, it is possible to easily and reliably bring the contact portion of the joint body into watertight contact with the water stop portion.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows 1st embodiment of this invention. Fig. 3 is an exploded cross-sectional view showing the member configuration of the joint member; 2 is a cross-sectional view taken along line A-A' in FIG. 1; FIG. It is a perspective view which shows a cover part and an insertion part. It is a sectional view showing a valve body. It is a sectional view showing a second embodiment. It is a perspective view which shows the cover part and insertion part of 3rd embodiment.

Below, the joint member of the present invention will be described with reference to the drawings. The description given below is intended to facilitate understanding of the embodiments, and is not intended to limit the understanding of the present invention.

Further, the joint member 1 in the present invention is a joint that is attached to a drainage pipe, and is connectable to both vertical pipes and horizontal pipes. It is possible to fix the orientation in any direction. In addition, in order to facilitate understanding of the invention in the embodiments described below, up, down, left, and right will be described with reference to the state in which the inspection opening 26 faces left as shown in FIG.

As shown in FIGS. 1 and 2, the joint member 1 in this embodiment includes a joint body 20 having an inspection opening 26 on the wall surface, a lid portion 30 covering the inspection opening 26, and the joint body 20 connected to the lid portion 30. It consists of an insertion portion 40 arranged inside and a valve body 80 attached to the insertion portion 40 . In addition, in the state where each member is attached to the joint member 1, the first water stop portion 60 attached to the outer surface of the insertion portion 40 is in contact with the contact surface 24 formed in the inner surface of the joint main body 20 in the circumferential direction. In addition to watertight contact, the inspection port 26 is watertightly closed by a closing portion 50 consisting of a lid portion 30 and a second water stop portion 70 .
The joint member 1 is connected to a tubular body 100, which is a vertical pipe extending in a substantially vertical direction, on the upstream side and the downstream side. In addition, in FIG. 1, the tubular bodies 100 connected to the upstream side and the downstream side are indicated by two-dot chain lines.

As shown in FIG. 2, the joint main body 20 is a cylindrical casing made of semi-transparent hard resin, and at its upstream and downstream ends, a cylindrical inlet 21 to which a tubular body is connected and a flow channel. An outlet 22 is provided. A storage chamber 23 for storing the insertion portion 40 is formed inside the joint main body 20, and an inspection opening 26 is opened in the left wall surface in FIG. 1 or FIG.
The inflow port 21 and the outflow port 22 are cylindrical with their central axes aligned, and have an inner diameter that is approximately the same as the outer diameter of the tubular body 100 to be connected by adhesion.
The inspection opening 26 is a circular opening formed in the wall surface of the joint main body 20, and four projections 28 are formed at equal intervals toward the inside at the opening end. When the lid portion 30 is attached to the inspection opening 26, the inner surface of the stepped portion 27 of the inspection opening 26, that is, the circumferential direction, abuts the first water stop portion 60, and the inner surface formed in the circumferential direction. The second water stop portion 70 abuts on the peripheral surface over the entire circumference.
The storage chamber 23 is formed between the inflow port 21 and the outflow port 22 and communicates with an inspection port 26 on the side surface thereof. Further, the storage chamber 23 has a contact surface 24 and a guide portion 25 on its wall surface.
The contact surface 24 is formed in the circumferential direction on the inner surface of the upstream end of the storage chamber 23, and as shown in FIG. It is slanted so that
The guide portion 25 has a stepped shape formed on the upper and lower surfaces of the contact surface 24, that is, on the side of the inlet 21 and the side of the outlet 22. As shown in FIG. and the lower surface are inclined so that the width becomes wider for a while.

The lid portion 30 is a circular cover member having an outer diameter that is approximately the same as the inner diameter of the inspection port 26. The outer periphery of the lid portion 30 facing the inner periphery of the inspection port 26 is provided with the convex portion 28. A groove 31 engaging with is formed in the circumferential direction. In addition, the lid portion 30 constitutes a closing portion 50 that closes the inspection port 26 in a watertight manner together with a second water shutoff portion 70 to be described later.
As shown in FIG. 4, the groove portion 31 is spirally formed on the outer periphery of the lid portion 30, and when the lid portion 30 is rotated clockwise with the convex portion 28 disposed in the groove portion 31, the groove portion As the protrusion 28 slides in the interior 31 , the rotational motion is converted into stress in the direction of inserting the cover 30 and the insertion section 40 from the inspection opening 26 into the storage chamber 23 . Also, a projection that engages with the convex portion 28 is formed at the end of the groove portion 31, and when the lid portion 30 is rotated to an appropriate position, the convex portion 28 overcomes the projection, thereby loosening the lid portion 30. and the fact that the inspection port 26 is closed is communicated to the user by tactile sensation.
Further, the cover portion 30 has an engaging portion 32 that engages with the insertion portion 40 on the side surface (right side in FIG. 2) on the storage chamber 23 side. The engaging portion 32 has a circular shape when viewed from the rear, and has a flange portion protruding outward along the entire circumference of the engaging portion 32 at its end. It is rotatably connected. Further, the lid portion 30 is formed with a gripping portion 33 that is exposed to the outside when the lid portion 30 is attached to the joint main body 20 , and the user can manually rotate the lid portion 30 with the gripping portion 33 . It's becoming

As shown in FIGS. 1 to 4, the insertion portion 40 includes an annular portion 41 arranged in the inspection port 26 and a flow path forming portion 43 projecting from the annular portion 41 toward the storage chamber 23. A fixing portion 46 and a valve seat 47 are formed in the forming portion 43 . The insertion portion 40 has a first water stop portion 60 that contacts the contact surface 24 and the step portion 27 of the inspection port 26, and a second water stop portion 70 that contacts the inner peripheral surface of the inspection port 26. A valve body 80 is attached to the fixed portion 46 . In addition, in FIG. 4, the first water stop portion 60 and the second water stop portion 70 are hatched for easy understanding of the invention.
The annular portion 41 has a circular shape when viewed from the front. .
The engaged portion 42 has a claw portion that engages with the engaging portion 32 at its end portion, and in the engaged state with the engaging portion 32, the lid portion 30 and the insertion portion 40 are relatively rotatable. Connect the members so that
The flow path forming portion 43 is formed with an opening 44 that forms a drainage flow path that connects the inlet 21 and the outlet 22 . 21 is located directly below. A support portion 45 extends from the inner peripheral surface of the opening 44 toward the central axis C, and a fixing portion 46 is formed in the center. In addition, the peripheral edge of the opening 44 on the outflow port 22 side of the flow path forming portion 43 functions as a valve seat 47 with which the valve body 80 abuts. As shown in FIG. 3, the outer side surface 48 of the flow path forming portion 43 has a shape that matches the contact surface 24 in plan view, and the upper and lower surfaces of the outer side surface 48 match the guide portion 25 in side view. It has a matching shape.
The first water stop portion 60 and the second water stop portion 70 are packings made of an elastic material such as rubber or silicon.
The first water stop portion 60 is attached to the outer surface of the insertion portion 40, that is, the outer surface of the flow path forming portion 43 and the inner surface of the annular portion 41 on the storage chamber 23 side. and the stepped portion 27 in watertight contact. Further, when coming into contact with the contact surface 24 and the stepped portion 27 , the first water stop portion 60 applies stress to the contact portion 24 toward the outside in the radial direction of the joint main body 20 .
The second water stop portion 70 is fitted to the outer periphery of the annular portion 41 and comes into watertight contact with the inner peripheral surface of the inspection port 26 when the construction is completed.

Here, the lid portion 30 and the second water stop portion 70 constitute a closing portion 50 that closes the inspection port 26 in a watertight manner. That is, the inspection port 26 is in watertight contact with the second water stop portion 70 along the entire periphery thereof, and the second water stop portion 70 is covered by the lid portion 30 so as not to separate from the inspection port 26, thereby enabling inspection. The mouth 26 is closed watertight.

The valve body 80 is an umbrella valve having a substantially T-shaped cross section and made of an elastic material such as rubber or silicon. It has an annular opening/closing portion 83 formed toward the outside in the direction. Moreover, as shown in FIG. 5, the opening/closing portion 83 is formed in an arc shape when viewed in cross section.
The valve body 80 is attached by inserting the fixed portion 81 through the fixed portion 46 . Here, when the valve body 80 is attached to the fixed part 46, the center of the valve body 80 coincides with the central axis C of the joint body 20, and the opening/closing part 83 is directed toward the valve seat 47 by its own elasticity. Evenly stressed. Therefore, the opening/closing part 83 is evenly in contact with the valve seat 47 over the entire circumference using its own elasticity as a biasing means.

When stress is applied to the valve body 80 due to drainage from the upstream side, the opening/closing portion 83 is elastically deformed toward the downstream side, thereby opening the drainage channel. On the other hand, when stress is applied from the downstream side due to reverse flow or the like, stress is applied to the opening/closing portion 83 in the direction of pressing it toward the valve seat 47, and the drainage channel is maintained closed. In addition, since the fixed portion 81 has a retaining portion 82 formed by partially swelling, the valve body 80 will not come off from the fixed portion 46 due to stress from the upstream side or the downstream side. .

Below, construction of the joint member 1 in this embodiment will be described in detail.

First, the upstream tubular body 100 and the downstream tubular body 100 are connected to the inlet 21 and the outlet 22 of the joint body 20 by adhesion.
Next, the engaged portion 42 of the insertion portion 40 is pressed against the engaging portion 32 of the lid portion 30 to engage the lid portion 30 and the insertion portion 40 . At this time, the engaged portion 42 climbs over the flange portion of the engaging portion 32, and the lid portion 30 and the insertion portion 40 become relatively rotatable.
Next, the fixed portion 81 of the valve body 80 is inserted through the fixed portion 46 of the insertion portion 40 . At this time, since the fixed portion 81 is gradually reduced in diameter toward the end portion, it can be easily inserted. Further, in a state in which the mounting of the valve body 80 is completed, the opening/closing portion 83 abuts against the valve seat 47 over the entire circumference.
Next, the lid portion 30 and the insertion portion 40 are inserted through the inspection opening 26 , and the lid portion 30 is rotated clockwise with the convex portion 28 arranged in the groove portion 31 , and the insertion portion 40 is moved into the storage chamber 23 . The assembly is completed by placing it inside. At this time, the convex portion 28 slides in the groove portion 31 as the lid portion 30 rotates, so that the stress applied to the lid portion 30 in the direction of rotation is converted into stress in the direction in which the lid portion 30 advances toward the storage chamber 23 . be. When the convex portion 28 reaches the end portion of the groove portion 31, the convex portion 28 rides over the projection formed in the groove portion 31, thereby preventing the lid portion 30 from being loosened.
Here, the first water stop portion 60 attached to the insertion portion 40 includes the contact surface 24 formed in the circumferential direction on the inner surface of the joint main body 20, that is, the inner surface of the storage chamber 23, and the inner surface of the stepped portion 27. It abuts on the side surface and applies stress to the abutting surface 24 toward the radially outer side of the joint main body 20 so as to abut watertightly. As a result, the drainage channel is limited so that all the drainage flowing from the tubular body 100 on the upstream side passes through the valve body 80 via the channel forming portion 43 . In addition, the second water stop portion 70 abuts on the inner peripheral surface of the inspection port 26 over the entire circumference to close the inspection port 26 in a watertight manner. As a result, when a backflow occurs from the downstream side, wastewater, odor, etc. will not flow back through the inspection port 26. - 特許庁
In addition, since the lid portion 30 and the insertion portion 40 are relatively rotatable, the rotation of the lid portion 30 during attachment/detachment is not transmitted to the first water stop portion 60 and the second water stop portion 70 . Therefore, the first water stop portion 60 or the second water stop portion 70 is not twisted with the rotation of the lid portion 30 .

When performing maintenance on the joint member 1 , the lid portion 30 and the insertion portion 40 can be taken out from the inspection opening 26 by rotating the lid portion 30 counterclockwise.

In the present invention described above, the user can attach the insertion portion 40 only by turning the cover portion 30 after inserting the insertion portion 40 toward the storage chamber 23 through the inspection opening 26 . In addition, since the insertion portion 40 is provided with the first water stop portion 60 on the outer surface, and the first water stop portion 60 is in watertight contact with the contact surface 24 formed on the inner surface of the joint main body 20 in the circumferential direction. , the joint member 1 of the present invention can easily and reliably ensure watertightness between the first water stop portion 60 and the contact surface 24 .

Although the joint member according to the first embodiment has been described above, the present invention is not limited to the shapes of the above embodiments, and various design changes may be made without departing from the scope of the invention.
For example, in the above-described first embodiment, the contact surface 24 formed in the storage chamber 23 was not formed over the entire circumference of the drainage channel. That is, in the first embodiment, the first water stop portion 60 is in contact with the inner surface of the stepped portion 27 at the location where the contact surface 24 is not formed. Alternatively, the contact surface may be formed along the entire circumference of the drainage channel.
Further, in the first embodiment, the lid portion and the insertion portion are connected so as to be relatively rotatable, but the lid portion 30 and the insertion portion 40 may be configured as completely separate bodies as in the second embodiment. good.
In the second embodiment shown in FIG. 6, the contact surface 24 is formed in the inner surface of the downstream end of the storage chamber 23 in the joint body 20 in the circumferential direction, and the first water stop portion 60 has a cylindrical shape. is fitted to the outer surface of the insertion portion 40 of the. Further, the lid portion 30 has a pressing portion 34 that presses the insertion portion 40 from above so that the insertion portion 40 does not separate from the contact surface 24 . In the joint member 1 according to the second embodiment, after inserting the insertion portion 40 toward the storage chamber 23 from the inspection port 26, by moving toward the end portion on the outflow port 22 side, the first water stop portion 60 is It contacts the contact surface 24 in a watertight manner. Thereafter, when the lid portion 30 closes the inspection port 26 , the pressing portion 34 presses the lid portion 30 from above to prevent the first water stop portion 60 from separating from the contact surface 24 .

Further, in each of the above embodiments, the first water stop portion and the second water stop portion are different members, but as in the third embodiment shown in FIG. You may comprise the part 70 from one packing. In this case, unlike the first embodiment, it is not necessary to bring the first water stop portion into contact with the inner surface of the stepped portion 27 . In FIG. 7, the first water stop portion 60 and the second water stop portion 70 are hatched for easy understanding of the invention.

Also, in the above-described first embodiment, the joint member is connected to the vertical pipe, but it may be connected to the horizontal pipe. Incidentally, in the case of connecting to the horizontal pipe, the direction of the inspection port can be arbitrarily set.
Further, in the above embodiment, the valve body is an umbrella valve, but other valve bodies such as a duckbill valve and a flap valve may be used. Also, instead of the valve body, a drain trap that forms a water seal inside may be provided.
In addition, the joint member of the present invention may be connected to any type of pipe such as a drain pipe connected to a freezer/refrigerator, an air conditioner, or the like, or a drain pipe connected to a washbasin, sink, or bathtub.

1 Joint member 20 Joint main body 21 Inlet 22 Outlet 23 Storage chamber 24 Contact surface 25 Guide part 26 Inspection port 27 Stepped part 28 Protruding part 30 Lid part 31 Groove part 32 Engaging part 33 Grasping part 34 Pressing part 40 Inserting part 41 Annular portion 42 Engaged portion 43 Flow path forming portion 44 Opening 45 Supporting portion 46 Fixed portion 47 Valve seat 48 Outer surface 50 Closing portion 60 First water stop portion 70 Second water stop portion 80 Valve body 81 Fixed portion 82 Omission Stopping portion 83 Opening/closing portion 100 Tubular body C Central axis

Claims (4)

A joint member attached to a drainage pipe,
a joint body to which a tubular body is connected at an end;
an inspection hole formed in the wall surface of the joint body;
a blocking portion that blocks the inspection port;
comprising an insertion portion arranged in the joint body from the inspection port,
The joint body has a storage chamber for storing the insertion portion therein, and a contact surface formed in the inner surface of the storage chamber in the circumferential direction,
The inspection opening has a stepped portion,
The insertion portion has a first water stop portion on the outer surface,
The joint member, wherein the first water stop portion is in watertight contact with the contact surface and the inner surface of the stepped portion . A joint member attached to a drainage pipe,
a joint body to which a tubular body is connected at an end;
an inspection hole formed in the wall surface of the joint body;
a blocking portion that blocks the inspection port;
comprising an insertion portion arranged in the joint body from the inspection port,
The joint body includes a storage chamber for storing the insertion portion therein, a contact surface formed in the inner surface of the storage chamber in the circumferential direction, and guide portions formed on the upper and lower surfaces of the contact surface. have
The insertion portion has a first water stop portion that watertightly contacts the contact surface on the outer surface,
The first water stop portion applies stress to the contact surface toward the radially outer side of the joint member,
A joint member, wherein an upper surface and a lower surface of an outer side surface of the insertion portion form a shape that matches the guide portion in a side view. 3. The joint member according to claim 1, wherein the insertion portion has a valve body that prevents reverse flow of fluid. The joint member according to any one of claims 1 to 3, wherein the inspection port is watertightly closed by a second water stop portion attached to the closing portion.

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