JP2007113225A - Drainage trap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely and firmly mount a hose mounting elbow without a hindrance to the handling of a drainage hose of a washing machine which is connected to a drainage trap. <P>SOLUTION: In this drainage trap, a defoaming cylinder, which is supported in a trap body, is protruded from an opening of the trap body to which a catch basin is attached, and the hose mounting elbow is fitted into the opening of the deforming cylinder. A protrusion, which overhangs outward, is formed at the end of the hose mounting elbow, and engaged with a stepped part which is formed on the inner peripheral surface of the deforming cylinder, so that the hose mounting elbow can be integrally connected to the deforming cylinder. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of a drain trap attached to a drain outlet on a floor surface and connected to a drain hose of a washing machine.

As a conventional drain trap, for example, as shown in FIG. 5 (A), an eye plate 53 is attached to the opening surface of the trap body 51 through an eye plate receiver 52, and a hose is attached to the opening edge of the eye plate 53. The structure of attaching and fixing the edge part of this elbow 54 by uneven | corrugated fitting is known. In this structure, the elbow 54 is fixed at the fitting position with the eye plate 53 and cannot be rotated in any direction, and there is a problem in that the drain hose attached to the other end of the elbow 54 is obstructed. is there.
Therefore, for example, as shown in FIG. 5B, the end of the elbow 54 is formed to be slightly tapered, and this is fitted into the opening of the defoaming cylinder 55 supported in the trap body 51. And the thing of the structure attached so that the connection part of the elbow 54 can rotate to an end part axis | shaft rotation was used abundantly (for example, refer patent document 1).

Japanese Utility Model Publication No. 6-71565

  When the end of the elbow 54 is tapered and fitted into the defoaming tube 55, the elbow 54 can be freely rotated. However, on the other hand, the elbow 54 is easily removed from the defoaming cylinder 55, and there is no click feeling when the elbow 54 is fitted and operated. There was a problem that the elbow 54 was removed together with the drainage hose because it was not inserted and the fitting was insufficient, and the drainage of the laundry was likely to overflow and leak.

  In view of such problems of the prior art, the present invention obstructs the routing of the hose connected to the drain trap in the drain trap for connecting the drain hose to guide the drainage of the washing machine or the like to the drain pipe. It is an object to be able to securely and firmly attach the elbow for hose attachment.

  As described above, fitting and fixing the elbow for attaching the hose to the eye plate is inconvenient for the drainage hose, and it is preferable to connect the elbow to the defoaming cylinder for the convenience of the hose. . Further, when injection molding the defoaming cylinder, a step portion is formed along the mold dividing surface on the inner peripheral surface of the tube, and the inner diameter of the cylinder is slightly at the opening end side into which the elbow is inserted. The other side is slightly larger. Therefore, in the present invention, a step portion formed in the defoaming cylinder is used, and an elbow fitted in the cylinder is engaged with the step portion so that the elbow is not easily detached from the defoaming cylinder. .

  That is, the present invention is a drainage trap constructed by projecting a defoaming cylinder supported in the trap body from the opening of the trap body to which the eye plate is attached, and fitting an elbow for hose attachment into the opening of the defoaming cylinder. The hose mounting elbow is formed with an outwardly projecting protrusion at the end of the hose mounting elbow, and the hose mounting elbow is engaged with the step formed on the inner peripheral surface of the defoaming cylinder. It is characterized by being integrally connected to.

  The elbow for attaching the hose can be molded from rubber, vinyl or polypropylene resin. The protrusion protrudes from the end of the elbow in the outer circumferential direction, and is provided so as to engage with a step portion on the inner peripheral surface of the cylinder when the elbow is fitted into the opening end of the defoaming cylinder. The protrusions can be formed into one or more protrusions or claws having an appropriate shape provided on the outer peripheral surface of the end portion of the elbow, or a basil shape protruding from the entire periphery. The protrusion may be formed integrally with the elbow or may be integrated later. In addition to the step portion formed by the mold dividing surface, a concave step portion with which the protrusion portion engages may be provided on the inner surface of the defoaming cylinder in correspondence with the protrusion portion provided on the elbow.

According to this, the elbow can be attached to the defoaming cylinder by arranging the lower end portion of the elbow coaxially into the opening of the defoaming cylinder attached to the trap body and pushing it from above. During installation, if the end of the elbow is pushed into the opening of the defoaming cylinder, the end where the projection is provided is slightly contracted by the elasticity of the elbow and fits into the defoaming cylinder. When the elbow is pressed in, the end of the elbow is released to the depth that reaches the step on the inner peripheral surface of the defoaming cylinder, and the contraction of the end of the elbow is released, and the protrusion engages with the step. Is transmitted to the hand holding the elbow, and it can be confirmed that the end of the elbow is engaged with a predetermined position on the inner peripheral surface of the defoaming cylinder.
The elbow attached to the defoaming cylinder is difficult to come off because the projection is engaged with the step, and when the elbow is rotated, the projection slides along the step, so it is attached to the elbow. The drainage hose can be freely rotated around the axis of the defoaming cylinder, and the drainage hose can be easily routed.

Preferred embodiments of the present invention will be described with reference to the drawings.
1 is a longitudinal cross-sectional view of a drain trap according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of an elbow and a defoaming cylinder in FIG. 1, FIG. 3 is an enlarged end view of an elbow connected to the defoaming cylinder, and FIG. Is an external view of other embodiments of the elbow, in each figure, reference numeral 1 is a drain trap, 2 is a trap body, 3 is a pan support, 4 is a pan, 5 is a defoaming cylinder, and 6 is a drain hose attached. Each elbow is shown.

  As shown in FIG. 1, the drainage trap 1 of the present invention has an eye plate 4 attached to the opening surface of the trap body 2 via the eye plate receiver 3, and a defoaming cylinder 5 is supported in the trap body 1, An elbow 6 that fits the drain hose (not shown) and the defoaming cylinder 5 is fitted into the opening 51 of the defoaming cylinder 5 that protrudes upward through the central opening of the eye plate 4 and is integrated and integrated. is there.

More specifically, as shown in FIG. 2, the elbow 6 is formed so that one side 61 thereof can be connected to the end of the drainage hose and fixed integrally, and the other side 62 is an opening of the defoaming cylinder 5. The outer diameter dimension of the defoaming cylinder 5 is set to a size that fits in a water-tight manner and the tip end side is slightly tapered so that it can be fitted into the defoaming cylinder 5.
Further, a flange 62a is provided on the outer peripheral surface of the other side 62 in the vicinity of the bent portion of the elbow 6, and a protrusion 62b which is a protrusion slightly projecting outward at an opposing position across the opening of the tapered end. , 62b are provided. Both the protrusions 62b can press-fit the end of the other side 62 of the elbow 6 into the opening 51 of the defoaming cylinder 5, and the elbow 6 can be inserted into the opening 51 from the end of the opening 51 as shown in FIG. It is provided in a size and shape that engages with a stepped portion 52 formed on the inner peripheral surface of the defoaming cylinder 5 at a position where the depth is immersed. Further, the flange 62 a is provided so as to be joined to the end face of the opening 51 of the defoaming cylinder 5 at a position where both the protrusions 62 b are engaged.

The elbow 6 is attached to the defoaming cylinder 5 by arranging the end of the other side 62 coaxially toward the opening 51 of the defoaming cylinder 5 and pressing it from above to press fit. At this time, if the end of the other side 62 of the elbow 6 is fitted into the opening 51 of the defoaming cylinder 5 and pushed in, the tip provided with the protrusion 62b is slightly contracted to fit into the defoaming cylinder 5. When the elbow 6 is press-fitted while applying force as it is, the contraction of the end portion is released when the end portion is immersed to a depth at which the end portion reaches the stepped portion 52 on the inner peripheral surface of the defoaming cylinder 5, and the protrusion 62b is formed in the stepped portion 52. At the same time, the click feeling “click” is transmitted to the hand holding the elbow 6, and it can be confirmed that the end of the elbow 6 is engaged with the stepped portion 51 in the defoaming cylinder 5.
The elbow 6 attached to the defoaming cylinder 5 is difficult to come off because the protrusion 62b is engaged with the step 52, and the protrusion 62b slides along the step 52 when the elbow 6 is rotated. The drain hose attached to one side 61 of the elbow 6 can be freely rotated around the axis of the defoaming cylinder 5.

  Note that a plurality of protrusions 62b may be provided along the outer peripheral surface of the end portion of the elbow 6 as shown in FIG. Further, as a protrusion instead of the protrusion 62b, a plurality of claw pieces 62c as shown in FIG. 5B are provided on the outer peripheral surface of the end of the elbow 6, or as shown in FIG. The protrusion 62d may be a bulge-like protrusion 62d along the outer peripheral surface of the end. Each of the protrusions of each shape is formed in a size and shape that engages with the step 52 on the inner peripheral surface of the defoaming cylinder 5.

  In addition, the form of the illustrated drain trap is an example, and the present invention is not limited to the illustrated form, and can be configured in other appropriate forms.

It is a longitudinal section of the drain trap of one embodiment of the present invention. It is an expanded sectional view of the elbow and defoaming cylinder of FIG. It is an edge part enlarged view of the elbow connected with the defoaming cylinder. (A)-(C) are the external views of other embodiment of an elbow. (A), (B) is a longitudinal section of the drain trap of the conventional form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drain trap, 2 trap main body, 3 eye plate holder, 4 eye plate, 5 defoaming cylinder, 51 step part, 6 elbow, 62a flange, 62b protrusion

Claims (1)

In the drain trap configured to protrude the defoaming cylinder supported in the trap body from the opening of the trap body to which the eye plate is attached, and to fit the hose mounting elbow into the opening of the defoaming cylinder,
A protrusion projecting outward is formed at the end of the hose mounting elbow, and this protrusion is engaged with a step formed on the inner peripheral surface of the defoaming cylinder so that the hose mounting elbow becomes the defoaming cylinder. A drain trap characterized by being connected together.

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