JP2819004B2 - Drain trap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain trap for an automatic ice maker and the like, and more particularly to a drain trap which is flexible and can easily remove dust accumulated in a vertically bent portion.

[0002]

2. Description of the Related Art As described in Japanese Utility Model Laid-Open Publication No. 5-49878, a conventional drain trap in an automatic ice making machine or the like is constructed of a rubber-like elastic body, a passage of which is bent short up and down. Since the bent portion is formed integrally, it is very difficult to form it, and as shown in FIG. 6, a flexible drain trap 1 constituted by a pipe bent up and down is required. In addition, there is a type in which a garbage removal port 2 is formed at the lower end thereof, and a lid 4 is screwed to the removal port 2 with a packing 3 interposed therebetween. There is a problem that water leaks from the removing port 2 due to deterioration of the packing 3 and the like, and that the removing port 2 easily causes dust to be clogged in the recess formed at the lower end of the drain trap 1 and increases the number of parts.

Further, in each of the above-mentioned conventional apparatuses, as shown in FIG. 7, a parting line 5 appears at the joint of the dies along the bending direction of the upper and lower bent portions at the time of molding them. As a result, the inner groove 7 is formed on the opposite side of the burrs 6. As a result, since the part where the burrs 6 are removed becomes thinner at the parting line 5 and the strength is reduced, the water stored in the downwardly bent portion is removed in winter. When frozen to the like, there is a risk of rupture at the parting line 5, and since the positional relationship between the upper and lower ends and the vertical length of the bent drain trap are constant, applicable models of the drain trap are limited, It is necessary to prepare a separate drain trap for each model, and there is a problem that the production cost is increased.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to improve the durability of a bent drain trap formed of a flexible pipe in an automatic ice machine, a refrigerator, a dishwasher and the like.

[0005]

Therefore, a drain trap according to the present invention is constituted by a flexible pipe bent up and down, and is opposed to an inner groove of a parting line formed along the bending direction. A rib is integrally formed on the side.

[0006]

In other words, since the drain trap is formed of a flexible pipe which is bent up and down, by pressing the bent portion downward by hand, the garbage and the like staying in the bent portion are bent upward. Part can be easily pushed to the downstream side through the part, while the rib is integrally formed on the opposite side of the inner groove of the parting line formed along the bending direction of the drain trap, so that the parting line of the drain trap is It is possible to reliably prevent the strength at the portion from decreasing.

[0007]

Embodiments of the present invention will be specifically described below. 1 and 2, a flexible transparent or translucent pipe-shaped drain trap 10 formed of a resin such as polyethylene or vinyl chloride has an upper end inlet 11 thereof.
And a lower end outlet 12 is enlarged in a trumpet shape, and fitted into a drain port 13 and a drain pipe 14 of an automatic ice machine, a refrigerator, a dishwasher, etc.
Are fixed from the outer peripheral side.

[0008] A circular projection 16 is formed on the upper part of the drain trap 10, and as shown in detail in FIG.
The orbital protrusion 16 is composed of two rows of annular protrusions 17 and an annular recess 18 formed between them and having a diameter slightly larger than the diameter of the drain trap 10. Is provided with a bellows portion 20 comprising a plurality of annular projections 19, as shown in detail in FIG.
The top of 9 has an arc-shaped cross section, whereas a groove 21 having a substantially V-shaped cross section is formed between adjacent annular projections 19, so that the bellows portion 20 is easily bent in the groove 21.

Further, a bellows portion 20 is provided in the drain trap 10.
The lower bent portion 22 and the upper bent portion 23 are provided successively, and the lower bent portion 22 is wider than the upper bent portion 23 and the passage area is increased, while the lower bent portion 22 and the upper bent portion 22 are formed when the drain trap 10 is formed. In a parting line 24 formed along the bending direction of the upper bent portion 23, as shown in detail in FIG. 5, ribs 26 are integrally formed on opposite sides of the inner groove 25, respectively. The flash 27 formed on the outer surface of the rib 26 when the trap 10 is formed has been removed.

That is, waste water is stored in the lower bent portion 22 of the drain trap 10, and the drain water 13 is discharged by the stored water.
If the drain pipe 14 is airtightly closed and the drain trap 10 is transparent or translucent, and it is found that debris stays in the lower bent part 22, the flexible lower bent part 22 is manually moved. , The debris or the like accumulated in the bent portion can be easily pushed out to the drainage pipe 14 on the downstream side through the upper bent portion 23, and the inside of the lower bent portion 22 can be cleaned. Since the passage area of the portion 22 is formed large and the bellows portion is not provided in the lower bent portion 22, the accumulation and adhesion of dust in the lower bent portion 22 are relatively reduced, and the drain water is discharged to the drain trap 10.
Can always flow stably, and at the same time, the trapping function of the stored water can be ensured, and the insect repellent and deodorant action can always be sufficiently achieved.

Further, in the drain trap 10, since the rib 26 is formed integrally with the parting line 24 formed along the bending direction of the lower bent portion 22 and the upper bent portion 23, the inner groove 25 is formed inside the rib 26. Even if formed
No thin portions are formed in the lower bent portion 22 and the upper bent portion 23. Therefore, the necessary strength is easily secured, and the durability of the drain trap 10 can be remarkably improved as compared with the conventional case. The presence of 26 has the practical advantage of preventing the body of the lower bend 22 and the upper bend 23 from being damaged when the burrs 27 are removed, and the rib 26 is relatively small, The flexibility of the lower bent portion 22 and the upper bent portion 23 is not particularly impaired.

Further, the upper end inlet 11 of the drain trap 10
Since the lower end outlet 12 and the lower end outlet 12 are each expanded in a trumpet shape, the operation of inserting the drain outlet 13 and the drain pipe 14 into them respectively becomes easy, and the fastening band 15 fixed from the outer peripheral side has the upper end inlet 11 and the lower end. The trumpet-shaped enlarged portion of the outlet 12 makes it difficult to come off, so that water does not leak from these attachment portions.

Further, since the circular convex portion 16 is formed on the upper part of the drain trap 10, if the annular concave portion 18 is cut with a cutter, the vertical length of the drain trap 10 can be changed. At the time of cutting, the cutter can be easily guided by the two rows of annular projections 17, so that the cutting operation can be performed reliably and safely, and the portion of the annular recess 18 which is the upper end after cutting has a large diameter. Therefore, the work of connecting to the drain 13 can be easily performed.

Further, the bellows portion 20 of the drain trap 10
Is easily bent by expanding and contracting as a whole by bending at the portion of the substantially V-shaped groove 21, and the mounting direction of the upper end inlet 11 and the lower end outlet 12 in the drain trap 10 and the fine adjustment of the vertical length can be freely adjusted. Therefore, in combination with the vertical length change of the drain trap 10 as described above, the drain trap 10 is commonly used for multiple models having different relative positions and vertical distances of the drain port 13 and the drain pipe 14. Therefore, since it is not necessary to prepare a separate drain trap for each model, the manufacturing cost of the drain trap 10 can be easily reduced.

[0015] In the vertical bent portion of the flexible drain trap, the rib integrally formed with the parting line along the bending direction is installed in the upper bent portion where there is little problem in strength. Omission, even if it is installed only in the downward bent portion, it is possible to obtain substantially the same operation and effect as in the above embodiment, and a plurality of circumferential protrusions in the above embodiment are provided at intervals above and below, and Of the drain trap can be selected in any number of ways, or, alternatively, these circumferential protrusions or the bellows in the above-described embodiment may have a vertical bent portion if necessary. Needless to say, it can be provided on the downstream side.

[0016]

In the drain trap according to the present invention, the rib is formed integrally with the parting line along the bending direction of the drain trap, and the strength at the parting line portion of the drain trap is sufficiently ensured. In addition, it is possible to reliably prevent the drain trap from being damaged due to freezing of the stored water in the lower bent portion or the operation of discharging the accumulated dust due to the pressing of the lower bent portion, and the life of the drain trap can be maintained long. Thus, the commercial value of equipment equipped with this drain trap can be increased.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a bottom view of the embodiment.

FIG. 3 is an enlarged view of a part III in FIG. 1;

FIG. 4 is an enlarged cross-sectional view of a part IV in FIG. 1;

FIG. 5 is an enlarged cross-sectional view taken along line VV of FIG. 1;

FIG. 6 is an exploded perspective view of a conventional device.

FIG. 7 is an enlarged cross-sectional view of a main part of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drainage trap 16 Orbital convex part 20 Bellows part 22 Lower bent part 23 Upper bent part 24 Parting line 26 Rib

Claims (2)

(57) [Claims] 1. A drain trap formed of a flexible pipe bent up and down and integrally formed with ribs on a side opposite to an inner groove of a parting line formed along the bending direction. 2. The drain trap according to claim 1, wherein a bellows portion is formed upstream or downstream of the vertically bent portion.