JP5939795B2 - Drainage pipe joint fitting - Google Patents

Description

  The present invention relates to a drain joint joint.

  For example, when connecting a horizontal drainage pipe on the toilet side to a horizontal drainage pipe on the drainage main side, conventionally, the end faces of both pipes are bonded to each other with an adhesive, and in this state, the outer peripheral surface of the contact part is attached. By winding the band, the horizontal drainage pipes were firmly fixed. However, the place where the pipes are connected is often small, and the contractor must keep the drain pipes from moving until the adhesive is solidified. For this reason, labor was required.

Japanese Patent Application Laid-Open No. 08-093020

  Therefore, it has been desired to provide a technique that can be used in a narrow place and can connect drain pipes without requiring an adhesive.

  This invention is made | formed in view of the said situation, and makes it a technical subject to provide the joint joint of the drainage pipe which makes the connection of a horizontal pulling drainage pipe and other drainage pipes easy.

  That is, the joint joint of the drainage pipe of the present invention is a joint joint that spans between one cylindrical drainage pipe and the other cylindrical drainage pipe, and connects both pipes. A hollow cylindrical elastic portion having both ends opened between the end surface of the drain pipe and the end surface of the other drain pipe and having elasticity, a band body that externally fits the outer peripheral surface of the hollow cylindrical elastic portion, and the band And a compression means for compressing the hollow cylindrical elastic portion so as to reduce the diameter of the hollow cylindrical elastic portion, and when the hollow cylindrical elastic portion is reduced in diameter by the compression means, at least one of the hollow cylindrical elastic portions The portion is bulged between the end face of the one drain pipe and the end face of the other drain pipe.

  In the drain joint joint according to the present invention, a part of the hollow cylindrical elastic part is a flat protrusion formed in a circumferential direction on an inner peripheral surface of the hollow cylindrical elastic part. When the drain pipe is fitted to the cylindrical elastic portion, the end face of the drain pipe and the end face of the drain pipe come into contact with the protrusion.

  Furthermore, in the joint joint of the drain pipe of the present invention, the hollow cylindrical elastic part bulges in the longitudinal direction of the drain pipe as the hollow cylindrical elastic part is reduced in diameter by the compression means. The expansion suppressing means for suppressing the above is arranged along both end edges of the hollow cylindrical elastic portion.

  The joint joint of the drain pipe of the present invention is such that when the hollow cylindrical elastic portion bulges, the flat protrusion is between the one drain pipe and the other drain pipe when the hollow cylindrical elastic portion bulges. It is characterized by being flush with the inner peripheral surface of the drain pipe so as to close the gap.

  The joint joint of the drainage pipe of the present invention can be applied in a narrow place and can connect the drainage pipes without requiring an adhesive.

The overall perspective view showing the state in which the horizontal drainage pipe on the toilet side and the horizontal drainage pipe on the drainage main side are connected to each other using the joint joint of the present invention drainage pipe, and the state in which the drainage mains are connected to each other FIG. It is a principal part expansion perspective view of FIG. It is a principal part disassembled perspective view of FIG. It is a principal part expanded horizontal sectional view of FIG. 1, and is a figure which shows the state before tightening a screw. It is a figure which shows the state after tightening a screw from the state of FIG. It is the VI-VI sectional view taken on the line of FIG. It is the VII-VII sectional view taken on the line of FIG. FIG. 8 (a) is a diagram illustrating the connection state between the horizontal pulling drain pipe on the toilet bowl side and the horizontal pulling drain pipe on the drain main pipe side in order using the joint joint of the present invention drain pipe. The figure which shows the initial state before both drainage pipes are tightened by a joint, FIG.8 (b) is a figure which shows the state in the middle of both drainage pipes being fastened by a joint joint, FIG.8 (c) is a joint joint. It is a figure which shows the state by which both the drainage pipes were tightened.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be exemplarily described based on examples. However, the dimensions, materials, shapes, and relative arrangements of the component parts described in this embodiment are not intended to limit the scope of the present invention unless otherwise specified.

  As shown in FIGS. 1 and 2, for example, a cylindrically-drawn horizontal drainage pipe 101 located on the toilet 100 side is located on the drainage main pipe 200 side, and is connected to a cylindrically-drawn horizontal drainage pipe 201. In doing so, the joint joint 1 according to the present invention is used. The outer diameter and inner diameter of the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are the same.

  The attachment position of the joint joint 1 is between the end surface 101a of the horizontal drainage pipe 101 and the end surface 201a of the horizontal drainage pipe 201 (see FIGS. 1 and 2). In addition, the joint joint 1 extends between one drain pipe 101 and the other drain pipe 201 to connect both pipes. The joint joint 1 includes a hollow cylindrical elastic portion 3 (see FIG. 3) that is ring-shaped and made of an elastic body such as rubber, and a band body 6 that is attached so as to surround the hollow cylindrical elastic portion 3.

  As can be seen from FIGS. 4 and 5, in the ring-shaped hollow cylindrical elastic part 3 and the band 6 surrounding the ring-shaped hollow cylindrical elastic part 3, the inner diameter of the band 6 is more than the outer diameter of the hollow cylindrical elastic part 3. Is slightly larger or almost the same. Further, the inner diameter of the hollow cylindrical elastic portion 3 is slightly larger than the inner diameter of the hollow cylindrical elastic portion 3 and the outer diameter of the horizontal drainage pipes 101 and 201.

  Further, the hollow cylindrical elastic part 3 is formed with a flat protrusion 33 in the circumferential direction on the entire inner peripheral surface 3b, and in the center in the width direction of the hollow cylindrical elastic part 3 (see FIG. 3). . For this reason, the hollow cylindrical elastic part 3 has a substantially convex shape in one cross section in a direction perpendicular to the circumferential direction (see FIGS. 3, 6, 7 and 8).

In connecting the horizontal drainage pipe 101 and the horizontal drainage pipe 201 via the joint joint 1, the protrusion 33 of the hollow cylindrical elastic portion 3 is located between the horizontal drainage pipe 101 and the horizontal drainage pipe 201. It comes to get in. Therefore, the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are obstructed by the protrusions 33 and prevent further progress of the horizontal drainage pipe 101 and the horizontal drainage pipe 201 in the axial direction (FIG. 6). To FIG. 8).

  In the state where the joint joint 1 is not used, the thickness of the horizontal drainage pipe 101 and the horizontal drainage pipe 201 is larger than the height dimension of the protrusion 33 in the hollow cylindrical elastic portion 3 (FIGS. 6 to 6). 8). This thickness difference is indicated by reference sign d2 (see FIGS. 6 to 8A). Further, the width dimension of the ridge 33 is somewhat smaller than the gap dimension between the horizontal drainage pipe 101 and the horizontal drainage pipe 201, and the gap d <b> 1 is opened on each side of the ridge 33. (See FIGS. 6 to 8A). The gap d1 may be only on one side, or the gap d1 may not be present. Further, on the outer peripheral surface 3 a of the hollow cylindrical elastic portion 3, three ring grooves 31 are formed. These ring grooves 31 extend along the circumferential direction of the hollow cylindrical elastic portion 3 and are arranged in parallel at equal intervals.

  Next, the band 6 will be described. The band body 6 that externally fits the outer peripheral surface 3a of the hollow cylindrical elastic portion 3 forms a two-part frame composed of one frame 61 and the other frame 62 so as to easily surround the hollow cylindrical elastic portion 3 ( (See FIG. 3). The shape of the one frame 61 and the other frame 62 viewed from the front is a half-moon shape, although the directions are different, and the opening sides in the circumferential direction are opposed to each other. In other words, it is a line-symmetric figure. Therefore, one frame 61 will be described, and the other frame 62 will be denoted by the same reference numerals in the same place, and description thereof will be omitted.

  In addition, the front as used in this specification means the surface which looked at the side which opposes the centerline c from the near side in FIG. 3, and the back means the surface seen from the back side of the front. Further, the left side refers to a surface facing the front and viewed from the left side, and the right side refers to the surface facing the front and viewed from the right side. Furthermore, the plane means the surface viewed from above, and the bottom means the surface viewed from below.

  In FIG. 3, one frame 61 located on the left side is installed on a belt portion 611 that is curved in a half-moon shape, screwed portions 9 provided at both ends of the belt portion 611, and both side edges of the belt portion 611. A pair of oblique edge portions 61c and a pair of semicircular arc-shaped portions (expansion suppressing means) 700 having a semicircular shape abutting on the pair of oblique edge portions 61c are provided.

  The band portion 611 is made of metal, and three ring protrusions 311 are formed on the inner surface thereof. The three ring protrusions 311 are fitted with the three ring grooves 31 formed on the outer peripheral surface 3 a of the hollow cylindrical elastic portion 3. By the fitting, movement of the band 6 in the width direction (direction in which the center line c extends) with respect to the hollow cylindrical elastic portion 3 is suppressed. Further, on both sides of the three ring ridges 311, pedestal ridges 312 each having a rectangular cross section are formed along the ring ridges 311 (see FIGS. 3 and 6 to 8). Since the pedestal strip 312 is on both sides of the ring projection 311, when the strip 6 composed of one frame 61 and the other frame 62 is assembled to the hollow cylindrical elastic portion 3, the strip 6 is hollow cylindrical. It stabilizes with respect to the elastic part 3 (refer FIG. 6, FIG. 7).

  The screwing portion 9 is for integrating the one frame 61 and the other frame 62 by screwing. Moreover, the shape which looked at the screwing part 9 from the right side has comprised the rectangular shape. Furthermore, a pair of through-holes 611a are formed at locations near both sides. Screws 911 are inserted into the through holes 611a and screwed into the nuts 912. As a result, the band 6 composed of one frame 61 and the other frame 62 is coupled to the hollow cylindrical elastic portion 3. Therefore, a screw and a nut are called a coupling means. And the screwing part 9, the through-hole 611a, the screw 911, and the nut 912 are called compression means.

The screwed portion 9 is formed by tightening the screw 911 and the nut 912 in a state where the one frame 61 and the other frame 62 surround the outer peripheral surface 3a of the hollow cylindrical elastic portion 3, thereby By reducing the diameter, the gap d1 formed between the horizontal drainage pipe 101 on the toilet 100 side and the horizontal drainage pipe 201 on the drainage main pipe 200 side, and the wall thickness difference d2 are made elastic in the hollow cylindrical elastic part 3. Is used to fill at least (see FIGS. 6 to 8).

  FIG. 4 shows a state in which the belt body 6 composed of one frame 61 and the other frame 62 is lightly fastened to the hollow cylindrical elastic portion 3. That is, the screwed portion 9 of one frame 61 and the screwed portion 9 of the other frame 62 are not yet in a tightly fastened state. FIG. 6 and FIG. 7 show this state in a longitudinal section.

  The pair of oblique edge portions 61c (see FIG. 3) is a part of the belt portion 611 (see FIG. 3), and is integrally formed on both side edges of the belt portion 611 as described above. In addition, the cross section is diverging toward the center line c (for example (see FIG. 6)). Further, the oblique edge portion 61c presses the end edge 30 (see FIG. 3) of the hollow cylindrical elastic portion 3 using the semicircular arc strip portion 700 (see FIGS. 8B and 8C). ). Therefore, the semicircular arc strip 700 and the hollow cylindrical elastic portion 3 are separated.

  The semicircular arc strip 700 is a bar-shaped body made of metal and has a substantially right triangle shape in cross section (see FIGS. 3, 6, and 7). Moreover, the semicircular arc strip 700 is curvedly formed in accordance with the oblique edge 61c. Further, the oblique edge portion 61c and the semicircular arc strip portion 700 are separated.

  Next, a process of connecting the horizontal drainage pipe 101 and the horizontal drainage pipe 201 using the joint joint 1 having such a configuration will be described.

  First, the hollow cylindrical elastic portion 3 is disposed between the horizontal drainage pipe 101 and the horizontal drainage pipe 201. In this state, the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are brought close to each other. In the hollow cylindrical elastic part 3 and the horizontal drainage pipe 101 and the horizontal drainage pipe 201, the hollow cylindrical elastic part 3 is slightly larger in diameter. Therefore, the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are fitted into the hollow cylindrical elastic portion 3 (see FIGS. 6 to 8). At this time, on both sides of the flat protrusion 33 on the inner peripheral surface 3b of the hollow cylindrical elastic portion 3, between the protrusion 33 and the horizontal drainage pipe 101 and between the protrusion 33 and the horizontal drainage pipe 201. It is set to leave a gap d1 between them (see FIG. 8A).

  Next, one frame 61 and the other frame 62 constituting the band 6 are moved closer to the hollow cylindrical elastic portion 3, and screws are inserted into the through holes 611 a provided in the screwed portions 9 in the frames 61 and 62. 911 is passed, and the screw 911 and the nut 912 are lightly screwed together.

  At this time, a slight gap d3 is formed between the semicircular arc strip 700 and both sides of the hollow cylindrical elastic portion 3 (see FIG. 8A). Thereafter, as the tightening force by the screws 911 further increases, the distance between the one frame 61 and the other frame 62 is reduced (see FIG. 8B).

  As the screw is tightened, the tightening of the hollow cylindrical elastic portion 3 by the frame 61 and the frame 62 increases, and the hollow cylindrical elastic portion 3 is reduced in diameter by the frame 61 and the frame 62 over the entire circumference. It becomes like this. On the other hand, both sides of the hollow cylindrical elastic part 3 are pressed by the semicircular arc strip 700.

  For this reason, the compressed hollow cylindrical elastic part 3 expands and escapes into the gap between d1 and d3. For this reason, from the state of FIG. 8A, it gradually becomes a state without gaps d1, d2, and d3 as shown in FIG. 8C. As a result, the horizontal drainage pipe 101 on the toilet 100 side and the drainage main pipe 200 side. Leakage at the connection point with the horizontal drainage pipe 201 is prevented.

  More specifically, among the gaps d1 to d3 that are lost when tightened, the gap d1 is set to 0 when the screw is fully tightened. By doing in this way, it can prevent that filth and toilet paper enter into the crevice d1. In addition, waterproofness is enhanced.

  Similarly, the gap d2 becomes 0 when the screw is tightened, that is, the step between the horizontal drainage pipe 101 and the horizontal drainage pipe 201 and the protrusion 33 becomes 0 (a flat state). Thus, each part is set to bulge (see FIG. 8C). By doing in this way, it can prevent filth and toilet paper getting caught in a level difference part. In addition, waterproofness is enhanced.

  Further, similarly, the gap d3 becomes 0 when the screw is tightened, that is, the gap d3 between the semicircular arc strip 700 and the end surface 30 of the hollow cylindrical elastic part 3 is the hollow cylindrical elastic part 3. Each component is set to be zero by bulging. By doing in this way, waterproofness can be improved further. However, since the slanted edge portion 61c provided in the frames 61 and 62 suppresses the outward movement of the semicircular arc strip portion 700 at the center line c, the slanted edge portion 61c and the semicircular arc strip portion 700 are referred to. This is called expansion suppression means. Expansion of the hollow cylindrical elastic portion 3 is suppressed by the expansion suppression means 61c and 700. Accordingly, the material escapes to the portion corresponding to the protrusion 33 in the hollow cylindrical elastic portion 3, and the dimensions d1 and d2 are sufficiently closed. However, even in such a case, each part is set to bulge so that the step between the horizontal drainage pipe 101 and the horizontal drainage pipe 201 and the protrusion 33 becomes 0 (a flush state). .

  In the present invention, since the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are connected by screwing, the horizontal drainage pipe 101 and the horizontal drainage pipe 201 are connected to the worker until the adhesive is dried as in the prior art. There is no need to keep. Therefore, work efficiency is improved.

  Further, since the band 6 is a two-part frame having one frame 61 and the other frame 62, it is easy to attach the band 6 to the hollow cylindrical elastic portion 3.

  In the present embodiment, the case where the horizontal drainage pipe 101 located on the toilet 100 side is connected to the horizontal drainage pipe 201 located on the drainage main pipe 200 side is described, but the joint joint indicated by reference numeral 11 in FIG. It can also be applied to the case where the same kind of drain pipes are connected.

DESCRIPTION OF SYMBOLS 1 Joint joint 3 Hollow cylindrical elastic part 3a Outer peripheral surface 3b Inner peripheral surface 6 Band 9 Threaded part (compression means)
DESCRIPTION OF SYMBOLS 11 Joint joint 30 End edge 31 Ring groove 33 Flat protrusion 61 One flame | frame 61c Oblique edge part 62 Other flame | frame 100 Toilet 101 Horizontal drainage pipe 101a End surface 200 of horizontal drainage pipe Drain main pipe 201 Horizontal drainage pipe 201a End surface 311 of horizontal drainage pipe 311 Ring protrusion 312 Pedestal strip 611 Strip 611a Through hole (compression means)
700 semicircular arc strip 911 screw (compression means, coupling means)
912 nut (compression means, coupling means)
c Center line d1 Gap d2 Gap d3 Gap

Claims (2)

It is a joint joint of a drainage pipe that spans between one cylindrical drainage pipe and the other cylindrical drainage pipe and connects both pipes,
A hollow cylindrical elastic part having both ends opened between the end face of the one drain pipe and the end face of the other drain pipe and having elasticity;
A belt body that externally fits the outer peripheral surface of the hollow cylindrical elastic portion,
Compression means provided on the belt body and compressing the hollow cylindrical elastic portion so as to reduce the diameter;
On the inner peripheral surface of the hollow cylindrical elastic part, a protrusion is provided in the circumferential direction, the height of the protrusion is formed lower than the thickness of the drain pipe , and the hollow cylindrical elastic is formed by the compression means. When the diameter of the ridge is reduced, the ridge contacts the end face of the one drainage pipe and the end face of the other drainage pipe by the pressure of the squeezed diameter, and the tip end of the ridge bulges and the drainage pipe Joint for drainage pipe that is flush with the inner circumference of the pipe. The expansion suppression means for suppressing the expansion of the hollow cylindrical elastic part in the longitudinal direction of the drain pipe as the hollow cylindrical elastic part is reduced in diameter by the compression means is the hollow cylindrical type. The drain joint joint according to claim 1, wherein the joint joint is disposed along both edges of the elastic portion.

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