JP6031644B2 - Drain piping connection - Google Patents

Description

  The present invention relates to a drainage pipe connection part, and more particularly to a drainage pipe connection part with improved workability or assemblability.

Conventionally, in drainage pipes including drainage equipment and drainage equipment, a drainage pipe as a connecting body and a connecting part using a nut member as a connected body are provided, and the drainage pipes are strongly contacted by screwing of the nut member. It is well known to connect the drain pipes in a watertight manner. The advantage of this method is that the connection of the drainage pipe can be released by releasing the screwing of the nut member, and if the drainage pipe is damaged, the damaged drainage pipe can be replaced, When the pipe is clogged, the drain pipe can be opened to remove the clog in the drain pipe.
When configuring such a drainage pipe connecting portion provided with a nut member, as a conventional method, an inward flange portion is provided in the inner circumferential direction of the nut member, and a retaining member provided with an outward flange portion is provided. The nut member is rotated with respect to the drain pipe main body by adhering the retaining member to the drain pipe main body while preparing and locking the inward hook portion and the outward hook portion rotatably. It can be attached so as to be freely removable from the connecting portion. The drainage pipes can be connected to each other by screwing a separate drainage pipe having a male screw part such as a drainage plug main body to the drainage pipe connecting part configured as described above.
However, in the case of the connecting part of the drainage pipe as described above, there are problems as described below.
1. In order to provide the connection part, it is necessary to bond the retaining member to the connection body provided in the drainage pipe, etc., so that the labor of adhesion increases and the adhesion failure causes the watertight connection between the retaining member and the connection body. In some cases, it was not possible. Moreover, the problem that the adhesive agent dripped outside and the designability deteriorated sometimes occurred.
2. When members such as drainage pipes are usually molded from a resin material, the adhesive that bonds the resin material is a chemical that melts the resin material by melting the resin material together There are many. There are various types of resin materials used for drainage pipes, such as those that cannot be bonded because they are highly resistant to drugs and are not soluble in drugs, and those that can be bonded because they are relatively easy to dissolve in drugs. Considering the case where chemicals such as detergents and organic solvents may flow into the wastewater, materials that are highly resistant to chemicals and that do not dissolve in chemicals are often more suitable as materials for drainage pipe members. . However, since it is necessary to use a material that can be bonded in order to provide the nut member at the connection portion of the drainage pipe as described above, a material that can be bonded and has low drug resistance must be used for the connection body and the retaining member. There was a problem that it had to be used.

  Therefore, in order to solve the above problems, in the invention described in Patent Document 1, the nut member is omitted, and a drain pipe main body having a substantially C-shaped retaining member and a kerf through which the retaining member is inserted, And a drain plug body having a groove on the side surface, the drain plug body is disposed in the drain pipe body, and a retaining member is inserted through the cut groove. By comprising in this way, the retaining member fixed to the drain pipe main body engages with the groove part of the drain plug main body, and the drain plug main body can be connected and fixed to the drain pipe main body. In addition, since it is configured in this way, there is no occurrence of a bonded part, so it is possible to solve the problem of bonding and the problem of design deterioration due to adhesive dripping, and a highly chemical-resistant material that cannot be bonded. Can be used.

Japanese Utility Model Sho 63-165361

However, in the case of the drainage pipe connecting portion configured as described above, there are the following problems.
3. Since the retaining member requires a rod-like or plate-like structure in shape, it is difficult to give shape strength. However, since at least a part of the retaining member is exposed to the outside of the drainage pipe, if any impact is applied to the connection part of the drainage pipe, the impact is directly transmitted to the retaining member and the retaining member is damaged. May end up. Even if it is not damaged, the retaining member may fall out of the kerf due to an impact, and the connection between the drain plug body and the drain pipe body may be released. Further, since the drainage pipe main body is provided with a kerf, the strength is naturally reduced as compared with the case where the kerf is not provided, and the possibility of breakage is increased.
4). Unlike the drainage pipe connection part using the nut member, the drainage pipe connection part using the substantially C-shaped retaining member is not general and is not standardized. For this reason, when adopting such a drain pipe connection, it is necessary to prepare a dedicated drain plug main body and drain pipe main body, respectively. As a result of loss of versatility, the unit cost is high and member management is difficult There was a problem of becoming.
The present invention has been invented in view of the above problems, and can connect a connected body to a connected body easily and without using an adhesive at a connecting portion of a drainage pipe. The stop member is protected, and the connection portion of the drainage pipe having high versatility of the member is provided.

The present invention according to claim 1 is a drainage pipe connecting portion for connecting drainage pipes,
A connecting body having a connecting cylinder portion 2 provided with a groove 2a along the circumference, a connected body having an inwardly-facing flange portion 4 attached to the connecting body, and the connected body as a connecting body And a retaining member 6 that is pivotably latched against the
The retaining member 6 includes an annular portion 6a that engages with the groove portion 2a at the time of completion of construction, an engagement arm portion 7 that is provided on the outer periphery of the annular portion 6a, and that engages with the inward flange portion 4 of the connected body, Consisting of
It is arranged in the groove portion 2a, has elasticity in the circumferential direction of the connecting tube portion 2, and in the absence of stress, at least a part protrudes from the inner peripheral edge of the inward flange portion 4, and stress in the inner circumferential direction of the connecting tube portion 2 The drainage pipe connecting portion is characterized in that the outer periphery is housed in the groove portion 2a and the entire outer periphery is accommodated in the inner peripheral edge of the inwardly facing flange portion 4.
The “drainage pipe” as used herein does not simply indicate only the pipe body, for example, a tank body such as a wash bowl of a wash basin or a sink of a sink, an indoor side such as an odor or pest from the sewage side It is an expression that indicates all devices and members through which drainage passes, such as drain traps that prevent intrusion.

The present invention described in claim 2 is the drainage pipe connecting portion according to paragraph 0006 , wherein the annular portion 6a of the retaining member 6 is integrated with the locking arm portion 7.

According to the third aspect of the present invention, the retaining member 6 includes an annular portion 6a having a substantially elliptical shape in plan view, and when the stress is not applied to the retaining member 6, a short side portion of the ellipse. The outer peripheral portion of 6c protrudes from the inner diameter of the inward flange portion 4 to form the locking arm portion 7, and when stress is applied to reduce the diameter of the annular portion 6a, the outer peripheral portion of the elliptical short side portion 6c becomes the inner diameter. By contracting to the side, the outer periphery of the retaining member 6 is housed inside the inward flange portion 4, and when the inward flange portion 4 moves to a position beyond the locking arm portion 7, the locking arm portion 7 The drain pipe connection part according to paragraph 0007 , characterized in that is locked to the inward flange part 4 .

The present invention described in claim 4 is the drainage pipe connecting portion according to any one of paragraphs 0006 to 0008 , wherein the annular portion 6a is provided with a notch portion 8.

In the present invention according to claim 5 , the retaining member 6 is located at a position where the center of the ellipse of the retaining member 6 and the center of the circle of the connecting tube portion 2 coincide with each other when there is no stress in the circumferential direction. The drain piping connection part according to Paragraph 008 or Paragraph 0009 , which includes a guide part 9 for moving the retaining member 6 itself.

According to the sixth aspect of the present invention, when the connecting body is attached to the connected body, the retaining member 6 stores the stress in the direction in which the connecting body is pressed against the connected body toward the inner peripheral edge of the inward flange portion 4. The drainage according to any one of paragraphs 0006 to 0010 , characterized in that the inclined surface 5 that converts the stress to the stress to be applied is provided on one or both of the retaining member 6 and the connected body. It is a connection part of piping.

In the first aspect of the present invention, the connecting member is attached to the connecting body by using the retaining member loosely fitted in the groove portion, so that it can be rotated with respect to the connecting body without bonding. It is possible to provide a drainage pipe connection portion having a connected portion that is freely removable.
Since it is not necessary to perform bonding, it is possible to reduce the time and effort of bonding, and to prevent the failure of ensuring the water-tightness of the connection portion due to a bonding error and the deterioration of the design property due to dripping of the adhesive.
Moreover, since it does not adhere | attach, the raw material which cannot adhere | attach and cannot resist the chemical | medical agent with high tolerance to a chemical | medical agent is employable for each member of drainage piping.
Further, since the retaining member is housed inside the connected body such as a nut member and is protected by the connected body, there is no fear of breakage or removal after the construction is completed. In addition, since the connection structure itself can be freely selected, a convenient method such as screwing using a screw can be freely adopted, and high versatility can be exhibited.
In the present invention described in claims 2 to 3 , the specific configuration of the present invention can be clarified.
In this invention of Claim 4 , the elasticity and a deformation | transformation to a circumferential direction can be easily performed by providing a notch part in a retaining member.
In this invention of Claim 5 , by providing a guide part in the retaining member , the retaining member itself is placed at a position where the center of the ellipse of the retaining member 6 and the center of the circle of the connecting tube part 2 coincide. Can be moved.
According to a sixth aspect of the present invention, there is provided an inclined surface that converts the stress in the direction in which the connecting body comes into contact with the body to be connected into the stress in the direction in which the retaining member is housed toward the inner peripheral edge of the inward flange. Thereby, the operation | work which attaches a connection body to a to-be-connected body can be made still easier.

It is a perspective view which shows the member structure of the connection part of the drain piping of a 1st Example. It is sectional drawing in a groove part of the connection part of the drain piping of a 1st Example. It is sectional drawing in a groove part of the connection part of the drain piping of a 1st Example. It is sectional drawing before attaching a nut member and a drain piping main part. It is sectional drawing which shows the state which the retaining member contacted the inclined surface. It is sectional drawing which shows the state which a retaining member passes an inward collar part. It is AA sectional drawing of FIG. It is sectional drawing which shows the state which the retaining member passed the inward collar part. It is BB sectional drawing of FIG. It is sectional drawing which shows the state which connected the pipe body to the drain piping main body. It is sectional drawing which shows the washstand which employ | adopted the connection part of the drain piping of 2nd Example. It is a perspective view which shows the member structure of the connection part of the drain piping of 2nd Example. It is sectional drawing in a groove part of the connection part of the drain piping of a 2nd Example. It is sectional drawing before attaching a nut member and a drain trap main part. It is CC sectional drawing of FIG. It is sectional drawing in a groove part which shows the state in which the retaining member has passed the inward collar part. It is sectional drawing which shows the state which the retaining member passed the inward collar part. It is DD sectional drawing of FIG. It is sectional drawing in a groove part which shows the state from which the retaining member was displaced. It is sectional drawing which shows the state which the nut member extracted from the connection cylinder part. It is a perspective view which shows the member structure of the other Example. It is a cross-sectional part in a groove part of other examples. It is a cross-sectional part in a groove part of other examples. It is a cross-sectional part in a groove part of other examples. It is a cross-sectional part in a groove part of other examples. It is a top view of the retaining member in other examples. It is a perspective view of a retaining member in another example.

Below, the 1st example of the present invention is described, referring to drawings.
The connection part of the drain pipe of the first embodiment of the present invention shown in FIGS. 1 to 10 is an embodiment corresponding to claim 1, claim 4 and claim 6 , and is described below. A drainage pipe main body 1a as a body, a nut member 3 as a body to be connected, and a retaining member 6 are attached to a pipe body 10a described below.
The drain pipe main body 1a has a cylindrical drain pipe main body 1a, and a connecting cylinder portion provided at one end of the drain pipe main body 1a in a cylindrical shape and provided with a groove 2a continuous on the outer surface along the circumference. 2 and.
The nut member 3 has a substantially cylindrical shape and is provided with a female screw portion 3a on the inner surface, and further protrudes inward from the inner edge of the female screw portion 3a, and the outer diameter of the connecting tube portion 2 of the drainage pipe main body 1a. A larger-diameter inward flange 4 is provided at one end. Further, an inclined surface 5 is provided on the inner peripheral edge portion of the inward flange portion 4 in the direction opposite to the female screw portion 3a.
The retaining members 6 include an annular portion 6a having a substantially circular shape in plan view, and a substantially arc shape, and a plurality of locking arms provided in the tangential direction with respect to the outer peripheral surface of the annular portion 6a, four in this first embodiment. Part 7. The connecting portion between the annular portion 6a and the locking arm portion 7 is provided with elasticity in the circumferential direction of the annular portion 6a. Therefore, in the positional relationship during construction, in the state where normal stress is not applied, The stop arm portion 7 is arranged at four positions from the inner peripheral edge of the inward flange portion 4 at a position where the end portion of the locking arm portion 7 protrudes, and is stored in the groove portion 2a when stress is applied in the inner peripheral direction of the connecting tube portion 2. Thus, the entire outer periphery is configured to be within the inner peripheral edge of the inward flange portion 4.
The tubular body 10a is a cylindrical member made of a resin material, and is provided with a male screw portion 10c that is screwed with the female screw portion 3a of the nut member 3 on the outer surface of one end.

The connection part of the drainage pipe of the first embodiment of the present invention configured as described above is constructed and attached as follows. Although not described in detail, a watertight connection is made using a packing P or the like to a portion where watertightness is required at a connection portion between members.
From the state shown in FIG. 1 to FIG. 2, the diameter of the cutout 8 is utilized to prevent the groove 2 a of the connecting tube portion 2 of the drain pipe main body 1 a from coming off as shown in FIG. 3 to FIG. 4. The annular portion 6a of the member 6 is disposed, and the annular portion 6a is rotatably attached to the groove portion 2a.
Next, the nut member 3 is pressed against the connecting tube portion 2 with the end portion on the side having the inward flange portion 4. Then, as shown in FIG. 5, the inclined surface 5 of the nut member 3 abuts on the locking arm portion 7 of the retaining member 6, and the stress toward the direction in which the nut member 3 is pressed by the inclined surface 5 is The locking arm portion 7 is converted into a stress in a direction in which the locking arm portion 7 is accommodated in the groove portion 2a, and the locking arm portion 7 is accommodated in the groove portion 2a by the ring elasticity of the connection portion between the annular portion 6a and the locking arm portion 7. As shown in FIGS. 6 to 7, the outer peripheral edge of the retaining member 6 is housed in the inner peripheral edge of the inward flange part 4 as viewed in the axial direction of the connecting tube part 2. For this reason, the nut member 3 can be further pushed in, and finally the inward flange 4 moves to a position beyond the retaining member 6. At this time, the locking arm portion 7 is released from the applied stress and returns to the state where no stress is applied as shown in FIGS. The nut member 3 is pivotally attached to the drain pipe main body 1a.
As shown in FIG. 10, by connecting the male threaded portion 10c of the tubular body 10a to the female threaded portion 3a of the nut member 3 through the packing P with respect to the drainage pipe connection portion assembled in this way. The drain pipe main body 1a and the pipe body 10a can be connected in a watertight manner.

Next, a second embodiment of the present invention will be described with reference to the drawings.
The connection part of the drain pipe of the second embodiment of the present invention shown in FIGS. 11 to 20 is an embodiment corresponding to claim 1 to claim 6 and is a drain as a connection body described below. It comprises a trap body 1b, a nut member 3 as a connected body, and a retaining member 6, and is attached to a drain plug body 10b described below.
The drain trap body 1b is a drain pipe obtained by bending a tube body 10a having a substantially circular cross section into an S shape. The drain trap body 1b has a cylindrical shape at one end of the drain trap body 1b and continues to the outer surface along the circumference. The connection cylinder part 2 provided with the groove part 2a is provided.
The nut member 3 has a substantially cylindrical shape and is provided with a female screw portion 3a on the inner surface, and further protrudes inward from the inner edge of the female screw portion 3a, and the outer diameter of the connecting tube portion 2 of the drainage pipe main body 1a. A larger-diameter inward flange 4 is provided at one end. Further, an inclined surface 5 is provided on the inner peripheral edge portion of the inward flange portion 4 in the direction opposite to the female screw portion 3a.
The retaining member 6 includes an annular portion 6a that also has a substantially elliptical shape in plan view, and is also used as the locking arm portion 7. The annular portion 6a includes a notch portion 8. The annular portion 6a is molded from resin and has elasticity toward at least the inner diameter direction of the connecting tube portion 2. For this reason, in the positional relationship at the time of construction, in the state where stress is not applied to the retaining member 6, the outer peripheral portion of the elliptical short side portion 6c protrudes from the inner diameter of the inward flange portion 4 and the annular portion 6a. When stress is applied so as to reduce the diameter, the notch 8 moves so that both ends thereof are in contact with each other, and the outer peripheral portion of the elliptical short side portion 6c contracts toward the inner diameter side. It is configured to be housed inside the facing collar 4.
Further, the retaining member 6 moves the retaining member 6 itself to a position where the inward flange portion 4 of the nut member 3 can be easily retained with respect to the connecting tube portion 2 in a state where there is no stress in the circumferential direction. A guide portion 9 is provided. Specifically, the retaining member 6 that forms an ellipse in plan view is provided with protruding portions as guide portions 9 in the inner diameter direction of the elliptical long side portion 6 b and in the inner diameter direction of both ends of the notch portion 8. As shown in FIG. 15, the protruding portion of the guide portion 9 is an arc that contacts the outer peripheral edge of the groove portion 2a when the center of the ellipse of the retaining member 6 and the center of the circle of the connecting tube portion 2 coincide. Formed. For this reason, if the center of the ellipse of the retaining member 6 and the center of the cylinder of the connecting tube part 2 do not coincide with each other and the position is shifted, the connection with the center of the ellipse of the retaining member 6 is caused by the elasticity of the annular portion 6a. A stress that moves the retaining member 6 is generated at a position where the center of the cylinder of the cylindrical portion 2 matches, and the center of the ellipse of the retaining member 6 and the center of the cylinder of the connecting cylindrical portion 2 are aligned. The stop member 6 moves.
At a position where the center of the ellipse of the retaining member 6 coincides with the center of the cylinder of the connecting tube portion 2, as shown in FIGS. 15 and 18, the outer periphery of the short side portion 6c at two positions of the retaining member 6 Project from the groove 2a evenly, that is, so as to be close to a symmetrical shape with respect to the center of the groove 2a. This is because, as shown in FIG. 19, the oval center of the retaining member 6 does not match the center of the cylinder of the connecting portion, and the retaining member 6 protrudes from the groove 2a only at one location. It can be said that the stopper member 6 is a position where the inward flange portion 4 of the nut member 3 can be easily locked. This is because, in the state of FIG. 19, the nut member 3 is inclined with respect to the central axis of the connecting tube portion 2 (or groove 2a), so that the nut member 3 is connected to the connecting tube portion as shown in FIG. It is because it will be removed from 2. Compared to the state shown in FIG. 19, the short side portion 6 c of the retaining member 6 protrudes evenly from the groove 2 a in the state shown in FIGS. 15 and 18 with respect to the central axis of the nut member 3. Since the central axis of the groove 2 a) is not inclined, it can be said that the nut member 3 is not easily pulled out of the connecting tube portion 2, and can be said to be a position where the inward flange portion 4 of the nut member 3 can be easily locked.
The drain plug main body 10b is a substantially cylindrical drain pipe, the upper end of which is watertightly attached to a drain opening opened on the bottom surface of a tank body such as a wash basin, and the female member of the nut member 3 is attached to the outer peripheral surface of the lower end portion. The male screw part 10c screwed with the screw part 3a is provided.

The connecting portion of the drainage pipe of the second embodiment of the present invention configured as described above is constructed and attached as follows. Although not described in detail, a watertight connection is made using a packing P or the like to a portion where watertightness is required at a connection portion between members.
From the state shown in FIG. 12 to FIG. 13, by utilizing the enlarged diameter by the notch portion 8, as shown in FIG. 14 to FIG. 15, in the groove portion 2a of the connecting tube portion 2 of the drain trap body 1b, The annular portion 6a of the member 6 is disposed, and the annular portion 6a is rotatably attached to the groove portion 2a.
Next, the nut member 3 is pressed against the connecting tube portion 2 with the end portion on the side having the inward flange portion 4. Then, the inclined surface 5 of the nut member 3 comes into contact with the annular portion 6a that is also used as the locking arm portion 7 of the retaining member 6, particularly the elliptical long side portion 6b protruding from the groove portion 2a. Thus, the stress in the direction in which the nut member 3 is pressed is converted into the stress in the direction in which the annular portion 6a is accommodated in the groove portion 2a, and the retaining member 6 is deformed so that the tips of the notch portions 8 approach each other. Thus, the entire annular portion 6a moves so as to be accommodated in the groove portion 2a, and as shown in FIG. 16, the outer peripheral edge of the retaining member 6 is inwardly facing in the axial direction of the connecting tube portion 2. All are accommodated in the inner periphery of the portion 4. For this reason, the nut member 3 can be further pushed in, and finally the inward flange 4 moves to a position beyond the retaining member 6. At this time, the locking arm portion 7 is released from the applied stress and returns to the state where no stress is applied as shown in FIGS. The nut member 3 is pivotally attached to the drain trap body 1b.
By connecting the male screw portion 10c of the drain plug main body 10b attached to the tank body to the female screw portion 3a of the nut member 3 via the packing P with respect to the connection portion of the drainage pipe assembled in this way, As shown in FIG. 11, the drain trap body 1b and the drain plug body 10b can be connected in a watertight manner.
In the present embodiment, the outer diameter of the connecting tube portion 2 and the inner diameter of the inward flange portion 4 are configured with substantially the same diameter although there is a slight gap. For this reason, when the inward flange part 4 is moved to a position beyond the retaining member 6 and the retaining member 6 engages the inward collar part 4, the nut member 3 is shifted laterally with respect to the connecting tube part 2. I can't. As shown in FIG. 19, when the central axis of the connecting cylinder part 2 and the central axis of the retaining member 6 are shifted, the nut member 3 may be detached from the connecting cylinder part 2 as described above. However, in the present embodiment, the presence of the guide portion 9 causes the center axis of the connecting cylinder portion 2 and the center axis of the retaining member 6 to be shifted as long as no stress in the lateral direction is applied to the retaining member 6. (I.e., the state of FIG. 19 is the state shown for the sake of explanation, and this state is rarely actually obtained). When the nut member 3 is pivotally attached to the drain trap body 1b, the retaining member 6 is surrounded by the side surface of the nut member 3, so that it can be directly removed unless a jig is used and the work is intentionally performed. It is almost impossible to apply stress in the lateral direction to the stopper member 6. Further, as described above, since the outer diameter of the connecting tube portion 2 and the inner diameter of the inward flange portion 4 are configured to have substantially the same diameter, the nut member 3 is shifted laterally with respect to the connecting tube portion 2. I can't do that either.
For this reason, when the nut member 3 is rotatably attached to the drain trap body 1b, the locking of the inward flange portion 4 and the retaining member 6 is released, and the nut member 3 becomes the drain trap body 1b. There's no way out.

The embodiments of the present invention are as described above. However, the present invention is not limited to the above-described embodiments, and can be freely changed without departing from the scope of the present invention.
For example, in the above embodiment, the attachment body is a drain pipe or drain trap, but the present invention is not limited to the above embodiment, and the inside of the tank body such as a sink and a sink, a joint member of a hose pipe, etc. Any member may be employed as long as it is a drainage device or piping member through which drainage passes.
Further, in the above embodiment, the retaining member 6 is formed in a shape having the locking arm portion 7 on the annular portion 6a having a circular shape in plan view or an elliptical shape in plan view, but any shape satisfying the gist of the present invention. Any shape may be adopted. One example is shown in FIGS. 21 to 25, by deforming so that the end portions corresponding to the notch portions 8 are in contact with each other, the entire retaining member 6 moves so as to be accommodated in the groove portion 2a, and the connecting tube portion 2 is moved. When viewed in the axial direction, the outer peripheral edge of the retaining member 6 is entirely accommodated within the inner peripheral edge of the inward flange portion 4.
Further, in the above embodiment, the retaining member 6 has a flat shape, has a notch portion 8, and is molded using a resin in order to obtain elasticity. However, the present invention is not limited to the above embodiment. Alternatively, as shown in FIG. 26 to FIG. 27, it may be configured to have an elliptical shape in plan view and a shape having a U-shape in side view for setting elasticity in the long side portion 6 b and the short side portion 6 c. The retaining member 6 is made of a thin metal plate, does not have the notch portion 8, and is formed by forming the inclined surface 5 on the short side portion 6c. When this retaining member 6 is fitted in the groove 2a, the elasticity of the U-shaped part 11 provided in the short side part 6c is utilized, the U-shaped part 11 of the short side part 6c is extended, and the short side part 6c is lengthened. Then, after inserting the connecting tube portion 2 through the opening of the retaining member 6, the extension of the U-shaped portion 11 is released and the retaining member 6 is disposed in the groove portion 2a.
When attaching the connected body such as the nut member 3 to the connected body such as the drainage pipe main body 1a, the elliptical long side portion 6b is obtained by the effect of the inclined surface 5 provided on the elliptical short side portion 6c of the retaining member 6. Stress in the direction to reduce As a result, the U-shaped portion 11 formed in the elliptical long side portion 6b of the retaining member 6 is reduced, and the short side portion 6c including the inclined surface 5 of the retaining member 6 is accommodated in the groove portion 2a. When the connecting cylinder part 2 is viewed in the axial direction, the outer peripheral edge of the retaining member 6 is all housed in the inner peripheral edge of the inward flange part 4, and the inward flange part 4 of the connected body holds the retaining member 6. It becomes possible to exceed.
Moreover, although the to-be-connected body is made into the nut member 3 in the said Example, this invention is not limited to the said Example, The nut member 3 is made into the connection body which provided the connection cylinder part 2, and drainage piping main body 1a It is good also as a to-be-connected body provided with the inward collar part 4.
Moreover, in the said Example, although the structure of the connection part and the connection method are screwing using the nut member 3 which has a screw part, this invention is not a thing limited to this, A convex part, a ditch | groove, If the drainage pipe can be connected, such as a connection method using a lock structure that utilizes the fitting of the connector, or a connection method using a buckle structure that presses the connection cylinder part 2 in the axial direction, the structure of the connection part Any configuration may be used and any method may be used.

DESCRIPTION OF SYMBOLS 1a Drain pipe main body 1b Drain trap main body 2 Connection cylinder part 2a Groove part 3 Nut member 3a Female thread part 4 Inward flange part 5 Inclined surface 6 Retaining member 6a Annular part 6b Long side part 6c Short side part 7 Locking arm part 8 Notch part 9 Guide part 10a Pipe body 10b Drain plug body 10c Male thread part 11 U-shaped part P Packing

Claims (6)

A drainage pipe connection for connecting drainage pipes,
A connecting body having a connecting tube portion 2 provided with grooves 2a along the circumference;
A to-be-connected body having an inward flange portion 4 provided in an annular shape attached to the connecting body;
A stopper member 6 exit to rotatably engaged against the connecting body object to be connected, consists of,
The retaining member 6 is
An annular portion 6a that engages with the groove 2a when the construction is completed;
A locking arm portion 7 that is provided on the outer periphery of the annular portion 6a and locks with the inward flange portion 4 of the connected body,
Consisting of
It is arranged in the groove part 2a and has elasticity in the circumferential direction of the connecting tube part 2,
In a state where there is no stress, at least a part protrudes from the inner peripheral edge of the inward flange part 4 and when stress is applied in the inner peripheral direction of the connecting tube part 2, the outer periphery is entirely accommodated in the inner peripheral edge of the inward flange part 4. A drainage pipe connection, characterized in that it is configured to fit. Annular portion 6a of the retaining member 6, characterized in that it is integral with the locking arms 7, the connection portion of the drain pipe according to claim 1. The retaining member 6 includes an annular portion 6a having a substantially elliptical shape in plan view,
In a state where no stress is applied to the retaining member 6, the outer peripheral portion of the elliptical short side portion 6 c protrudes from the inner diameter of the inward flange portion 4 to constitute the locking arm portion 7 ,
When stress is applied to reduce the diameter of the annular portion 6a, the outer peripheral portion of the elliptical short side portion 6c contracts to the inner diameter side, so that the outer periphery of the retaining member 6 is housed inside the inward flange portion 4 , When the inward flange part 4 moves to a position exceeding the locking arm part 7, the locking arm part 7 is locked to the inward flange part 4 ,
The connection part of the drain piping of Claim 2 . The drain pipe connection portion according to any one of claims 1 to 3 , wherein the annular portion 6a includes a notch portion 8. The retaining member 6 is a guide portion that moves the retaining member 6 itself to a position where the center of the ellipse of the retaining member 6 and the center of the circle of the connecting tube portion 2 coincide with each other in the absence of stress in the circumferential direction. characterized in that it comprises a 9, connection of the drain pipe according to claim 3 or claim 4. When attaching the connection body to the connected body, the inclined surface converts the stress in the direction in which the connection body is pressed against the connection body into the stress in the direction in which the retaining member 6 is housed toward the inner peripheral edge of the inward flange portion 4. The drain pipe connecting portion according to any one of claims 1 to 5 , wherein 5 is provided on one or both of the retaining member 6 and the body to be connected.

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