JPH07300889A - Plastic filter for drain port - Google Patents

Abstract

PURPOSE:To remove dust such as hair in a drain port easily by integrally molding a fine mesh filter of a plastic material. CONSTITUTION:A frame body section 3 is formed in conformity with the inside diameter of a drain port, one or more of slender projecting pieces 2 are extended from the frame body 3 and shaped integrally, and a filter section 1 is molded integrally to the frame body section 3 through an infection molding method from net yarn having fine diameters. A guide body 14 having a large diameter is mounted on the mesh filter section 1 having fine diameters, a molding material is infected from the upper section of the guide body 14, pressure is accumulated once by a guide band having a large diameter, the mesh filter section 1 having the fine diameter is discharged forcibly by utilizing the pressure, and the molding material is infected up to terminals. The projecting pieces 2 are bent and engaged with the inwall of the drain port, and placed on a cross-shaped support lever 10. Accordingly, the floating of the filter by a water flow and water pressure at the time of drainage is prevented while the disposal of the used filter, on which dust such as hair adheres, can be simplified.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage filter for preventing the outflow of dust such as hair and soap debris by installing it in a drainage outlet such as a sink, a sink in a bathroom or a kitchen, It is suitable not only for general household use but also for public facilities such as hotels and schools, service facilities such as restaurants and supermarkets, and general enterprises. In particular, since the filter is integrally formed of a plastic material, hair, saliva, etc. are not easily entangled in the mesh filter part, so it is easy to clean and can be used in the cleaning industry, and it is flammable and can be manufactured. The cost is also low, and it is useful as a disposable plastic filter for drainage port.

[0002]

2. Description of the Related Art In this type of conventional filter, a wire mesh filter, a stainless drainage tray, or a combination filter using a part of plastic is generally used. This is because it was difficult to integrally form a filter with a mesh in plastic molding, and it is necessary for the water-related products to have a clean feeling or good drainage, so the material is metal. This is because it was considered suitable. However, since it is a metal material, its cost is higher than that of plastic and the like, and it is difficult to form a fine mesh due to its poor workability. Also, since it is made of metal, it has a long life, so there was no idea to throw it away. Therefore, if dust or dirt such as hair, soap debris, and saliva accumulates on the filter due to use at the drain outlet, it is necessary to clean it and use it again. However, the wire mesh filter has a drawback in that hair and saliva are entangled with each other and cleaning is difficult. Dust at the drain is very dirty, and if it's hard to clean, it's even more disgusting. There was great resistance at hotels, companies, and schools used by an unspecified number of people, whether in my own home or not. Therefore, under the present circumstances, it is often the case that the sauce is drained without installing a filter. This results in a great burden on the purification equipment at the end of the wastewater and sewage treatment, and in the case of hair in particular, it does not disappear even if back treatment is applied, and it adheres to the rotating part of the purification equipment. There were many cases that led to equipment failure. Further, it is not preferable in terms of environmental hygiene, and if possible, it should be incinerated as household waste or combustible waste together with a filter. From this point, the development of a simple filter for a drainage port, which is inexpensive and combustible so that it can be disposable, and has excellent filtering and filtering functions, has been awaited.
Recently, a simple filter made of vinyl chloride resin and having a large number of punched holes is commercially available. It is excellent in that it is disposable, but because of the characteristics of vinyl chloride resin, it has sticky hair, etc. Cannot be removed easily, the manufacturing cost is high due to poor moldability, and the shape can only be a dome shape with a raised central part, so it can be installed only in a form that covers the drain port and it can be attached to various drain ports. There was a drawback that the shape could not be adapted.

[0003]

[Problems to be Solved by the Invention]
Using relatively hard and inexpensive plastics such as polypropylene, we focused on the good moldability, which is one of the advantages of polypropylene, and integrated molding technology of mesh with mesh yarn having a wire diameter of about 0.2 mm to 1 mm. By developing the above, it is intended to realize a plastic filter which can easily remove the above-mentioned adhered hair and is disposable. The problems and solutions when using a plastic material instead of the conventional wire mesh or stainless material have been as follows. The present invention focuses on such problems and solutions, and makes a fine mesh filter by integral molding with a plastic material, and the simplest and most functional filter as a filter for removing dust from the drainage outlet and preventing hair from flowing out. The purpose of the invention is to provide a plastic filter for drainage. Furthermore, the purpose is also to eliminate the drawbacks of the conventional filter integrally molded with plastic.

[0004]

In order to achieve the above-mentioned object, the drainage plastic filter of the present invention is installed in a drainage pipe of a bathroom or a washbasin as one of the main features. In a filter for hair or the like, a plastic filter part integrally formed by injection molding a small-diameter net yarn, and at least one or more protruding pieces on the outer peripheral part of the filter part that can be pinched by hand. Provided,
It is also used as a locking piece for locking the protruding piece to the inner wall of the drainage pipe, and as a derivative invention thereof,
That the protruding piece is a mesh portion so as not to impede the water flow from the side drainage port, a gas and air pool useful for injection molding at the protruding piece, or a molding material pool is formed, and on the outer periphery of the filter part. A concave portion or a V-shaped groove is formed in a connecting portion between the provided protruding piece and the filter portion so that the protruding piece can be easily bent substantially at a right angle to the filter portion. Provided with a gripping part that can pinch the part, and at the outer peripheral part of the filter part, contact the inner wall in the pipe of the drainage port to lock the filter in the pipe, or adjust to multiple inner diameters of the pipe At least three projecting pieces are provided for enabling the above-mentioned, and a gripping part capable of pinching the filter part is provided at the upper center part of the filter part to form a peripheral end part of the filter. A groove or a recess for facilitating the reduction or reduction of the size of the filter as a whole, as well as providing a frame portion for forming a filter, a mesh portion for forming a filter, and / or a frame body. Form a bulge part that is a useful gas and air reservoir at the time of injection molding,
This is a plastic filter for drainage ports that also serves to prevent drifting of hair and the like. Another major point is that in the filter for hair etc. where the entire filter is made of synthetic resin, the filter part is formed on the bottom and side surfaces to make the cross section trapezoidal and the part that becomes the gate during injection molding is slightly longer. The boss part of the above, and the grip part for taking out the filter, the filter part is formed on the bottom surface and the side surface to have a trapezoidal cross section, and the filter part above the side surface is useful for injection molding. A gas and air reservoir or a bulging portion that serves as a molding material reservoir is provided, and it is used as a gripping portion for taking out the filter, the filter portion is formed on the bottom and side surfaces, and the frame body portion is formed on the side surface. And its cross section is formed into a substantially trapezoidal shape, and a bulging portion that serves as a gas and air reservoir or a molding material reservoir that is useful during injection molding is provided on the frame body. A holding part for taking out the filter, and a cutout part or a hole into which the bulging part is inserted is provided in the frame part so that the trapezoidal filters can be stacked and stored. It is a plastic filter for drainage. As an improvement of the above, on a mesh filter made of mesh yarn of small diameter,
While accumulating the molding material at the time of injection molding and forming a guide band made of a large-diameter net thread to be discharged in a substantially radial shape including a circular or elliptical shape, the guide band has a length that does not reach the outer periphery of the mesh filter. A plastic filter for drainage, which is characterized in that As a further main point, an induction band made of a large-diameter net thread for accumulating and releasing a molding material during injection molding is formed on a mesh filter made of a small-diameter net thread in a substantially radial shape including a circular or elliptical shape. Together with the guide band, a length that does not reach the outer circumference of the mesh filter, forming a rib on the guide band of the large diameter, a grip for taking out the filter, or for suppressing movement of the filter. The engaging portion, the first guiding band having a shape similar to the shape of the filter, and the length which is formed substantially radially from the center of the filter and does not reach the outer periphery of the mesh filter. And a part of the first and second induction bands are connected to each other, an elongated pin portion or a flat plate on the first or second induction band. Ribs And forming a wide frame body that surrounds the outer periphery of the mesh filter made of mesh yarn of a small diameter, by using it as a gripping portion for taking out the filter or a locking portion for suppressing movement of the filter, An elongated pin portion or a flat rib portion for holding the filter for taking out the filter or preventing hair drifting is provided on the frame body portion, and a rib for suppressing movement of the filter is provided on the first or second induction band. It is characterized by being formed. Also, as the main point to adapt to various filter sizes,
The whole filter is made of synthetic resin, and the mesh filter made of mesh yarn with a small diameter, the wide frame part surrounding the outer periphery of the mesh filter, and the molding filter on the mesh filter to accumulate and discharge the molding material during injection molding. In a filter for hair or the like formed with an induction band made of a net yarn of a large diameter, the size of the filter can be adjusted by forming a plurality of the frame bodies so as to be separable, and the plurality of frames. The body is provided with cutouts for cutting, the plurality of frame bodies are formed at intervals, and a connecting portion for connecting between them is provided, which can be separated when the size of the filter is adjusted. It is characterized by Furthermore, as a main point for suppressing the movement of the filter and improving the filtering performance, the whole filter is made of synthetic resin, and the large diameter that stores and discharges the molding material during injection molding on the mesh filter made of small diameter mesh In a filter for hair or the like having an induction band made of a mesh thread, the induction band having a length that is formed substantially radially from the center of the filter and does not reach the outer periphery of the mesh filter is further thicker or wider. Of the induction band, which has the effect of gently bending the filter surface, is formed substantially radially from the center of the filter, and has a length that does not reach the outer periphery of the mesh filter. And a wide frame body portion that surrounds the outer periphery of the mesh filter, and the wall thickness or width of the frame body portion is set so as to bend the filter surface. For the drainage outlet, the entire filter is made of synthetic resin, and the mesh filter is formed with a small-diameter mesh thread, and a large-diameter frame part surrounding the mesh filter is formed. In the mold for manufacturing the filter, the insert facing the frame groove of the mold for forming the frame part is undercut to such an extent that it does not hinder the mold release, thereby making the filter curved. Characterized as promoted. Another important point regarding carrying and storage is that the entire filter is made of synthetic resin, and the induction band made of large-diameter net thread that stores and discharges the molding material during injection molding is placed on the mesh filter made of small-diameter net thread. In the formed filter of hair or the like, a guide band that is formed substantially radially from the center of the filter and has a length that does not reach the outer periphery of the mesh filter, and a wide frame body portion that surrounds the outer periphery of the mesh filter. A drainage port plastic filter having a hinge portion provided for bending at a position facing the frame body portion. Furthermore, as the main point as a three-dimensional filter, the entire filter is made of synthetic resin, and on a mesh filter made of small-diameter mesh yarn,
In the filter of hair etc. which formed the induction band consisting of the large diameter net thread that accumulates and discharges the molding material during injection molding,
The mesh filter part surrounded by the thick frame part is integrated into 3
The surface is formed, one surface at the center serves as a ceiling filter, the other two surfaces serve as side filters, and at least one of the three surfaces is formed substantially radially from the center of the filter, and the mesh Forming an induction band having a length that does not reach the outer periphery of the filter, and by providing a hinge portion between the top filter and the side filter, it is possible to perform injection molding with a push-cut surface on the same plane of the mold, It is characterized in that the shape of the top surface filter is a flat rectangular shape, and the shape of the side surface filter is similar to the shape of a pipe on which the filter is placed. In addition, as a main point to increase the connection strength between the mesh filter and the frame part, the connection part between the frame part and the small-diameter net thread part is tapered and thickened to increase the connection strength. It is characterized by having done.

[0005]

According to the above-mentioned means of the present invention, a mesh filter having a fine wire diameter can be used to form a filter portion with a sufficiently wide opening, so that hair and various dusts can be prevented from flowing out, and only moisture can be removed. It has the effect of causing it to flow out. When disposable, it retains flammability with a thin-walled molding made of a few grams of plastic material, and the lifting or movement of the filter due to water pressure or water flow is caused by protruding pieces or projections rubbing against the side wall of the drainage port or the filter surface is loose. It has a function to prevent it by bending. In addition to a material such as polypropylene that slides easily, the filter surface is formed by mirror finishing when forming the groove of the mold, so that the hair etc. adhering to the filter can be easily removed with a single wipe with a tissue paper. is there. In addition, the filter to which dirt is attached is provided with a gripping portion that allows the dirt to be taken out without directly touching the dirt, so that the work of taking out the filter is clean and easy. In addition, the boss of the extruded part required at the time of molding is also used as a grip part for picking up the filter or a rib for suppressing the movement of the filter to prevent the filter from moving and rising without adding extra steps. It can act.

[0006]

EXAMPLES Examples of the disposable plastic filter of the present invention will be described in detail below. FIG. 1 shows a basic embodiment of the present invention, which is circular so as to match the inner diameter of the drainage port. A frame portion 3 is formed so as to surround the periphery of the filter portion 1 to reinforce the peripheral edge of the mesh filter portion, and an elongated projecting piece 2 extending from the frame portion 3 is integrally provided. The projecting piece 2 can be bent from the root thereof, that is, from the connection portion with the frame body portion 3, and the whole filter is placed on the cross-shaped support rod 10 or the bottom portion of the drain port with the angle of approximately 90 degrees. At this time, the projecting piece 2 is locked to the inner wall of the drainage port to prevent the filter from being lifted or moved due to the water flow and water pressure during drainage. At the same time, it also has a function as a pick-out portion when discarding a used filter with hair or dust attached. The used filter feels very dirty, and by pinching the protruding piece 2, the filter can be discarded without directly touching the filter part 1. When the present invention is applied to the drain of the washbasin, the diameter of the filter is 27.
It can be applied to almost all drainage holes of about 40 mm from 40 mm, and a size of about 30 mm is usually sufficient. Although the structure itself of the present invention is very simple, one of the problems is to integrally mold a filter having a fine mesh by injection molding in order to realize the present invention. It came to. The elemental technology underlying these solutions is Japanese Patent Application No. 4-3 filed by the applicant.
08205 and Japanese Patent Application No. 4-324596. Basically, it suffices if the groove cutting on the mold can be processed well. Although not described in detail, the net groove of the filter is formed by a blade to which ultrasonic vibration is applied. As a result, the surface of the mold can be almost completely mirror-finished, which is particularly effective for manufacturing a filter having a fine mesh.

FIG. 2 shows another embodiment, which is a filter shape effective for a drain port having a side port on the side wall of the drain port 8. The protruding piece 2 is sized to fit the side port 9 of the drainage port 8 and is used as the auxiliary filter 4. The filter part 1 and the auxiliary filter 4 are connected by a mesh filter part to improve drainage from the side port 9. In FIG. 3, the filter unit 1 is polygonal. It is intended to improve the marketability of various shapes. FIG. 4 shows that the auxiliary rib 5 is provided to reinforce the filter portion 1, and a gas / air / molding material reservoir 6 for containing gas or air generated in the mold during injection molding or excess molding material is provided. It is possible to prevent burrs that are likely to occur in the portion 1 and sink marks that are likely to occur in the frame portion 3, and to use it as a catching portion when picking up the filter. Since the gas / air / molding material reservoir 6 is located at the tip of the projecting piece 2, even if an obstacle such as a sink mark occurs in this portion, the filtering function is not affected, and the commerciality is not impaired. FIG. 5 shows another modified embodiment, in which a protruding piece 2 having a gas / air / molding material reservoir 6 at its tip is provided on only one side. Since the protruding piece 2 in this case is mainly necessary for picking up the knob, it is useful for saving the molding material and downsizing. FIG. 6 is a sectional view of FIG. 5, in which a V-shaped cut is applied to the connecting portion between the frame body portion 3 and the protruding piece 2. This makes it easier to bend the protruding piece 2 at about 90 degrees.

FIG. 7, FIG. 9 and FIG. 11 show another embodiment for improving the present invention to make the filter portion 1 finer and more precise. Although the content thereof is disclosed in the invention of the present applicant described above, the outline of the principle is as follows. Large diameter induction band 14 on the small mesh filter section 1
Is provided, the molding material is injected from above the induction band 14, the pressure is temporarily accumulated in the large diameter induction band, and the pressure is used to vigorously discharge to the small diameter mesh filter unit 1. Therefore, even in the case of a fine mesh, the molding material flows to the end, so that the phenomenon of mesh loss does not occur. The presence of the guide band 14 allows the filter portion 1 to be formed more quickly and more accurately, and the number of shots is increased, and at the same time, quality inspection is substantially unnecessary and mass productivity is significantly improved. Further, as shown in FIG. 9, the guide band 14 may be in the shape of a single horizontal bar.
8, FIG. 10, and FIG. 12 are respectively FIG. 7, FIG. 9, and FIG.
The cross-sectional view of FIG. 2 is a state in which the filter is placed on the cross-shaped support rod 10 at the bottom of the drainage port 8. Figure 9
The filter having the protruding piece 2 as described above may be applied to a wash basin in which the drain port 8 has the side port 9. A conventional example related to the embodiments up to FIG. 12 will be described. As a mesh filter made of plastic and having a grip portion for picking up the filter as a knob, an actual flat filter 4-7037
2, there are actual open Sho 63-9370, actual open Sho 56-51874, etc., but these are all used by placing them on the upper part of the drainage port. As in the present invention, since it is not installed on the inner wall of the drainage pipe, its gripping portion has only a functioning effect as a knob portion, and the function of preventing the filter from rising and filtering the water flow from the side port of the drainage port. I don't have it. Regarding the provision of a small protruding piece on the frame part of the filter, there is a Japanese Utility Model Laid-Open No. 61-76875,
This is a structure in which a protruding piece is provided in order to prevent the filter from falling into the drainage pipe, and the protruding piece is locked to the peripheral edge of the opening of the drainage port. Therefore, it is different from the purpose of the present invention in which one filter is used for various sizes of drainage ports or drainage pipes, and the effect of the present invention for adjusting the size of the protruding piece cannot be achieved at all. .

13 to 16 show a rod-shaped grip portion 12 provided at the center of the filter portion 1 without providing the protruding piece 2 around the filter portion 1. If the protruding piece 2 is provided, the shape of the product becomes wider, which is a little inconvenient during transportation and product display. To solve this, the boss portion for contacting the gate or the push pin should be slightly longer and gripped. Part 12
Was formed on the filter part 1. Furthermore, the protrusion 11 for rubbing against the inner wall of the drainage port is provided around the filter unit 1 to add the effect that it does not float up against the water flow and water pressure during drainage and does not move. The protrusion 11 in FIG. 13 is formed in a flat plate shape, and the protrusion 11 in FIG. 15 is formed in a hollow ring shape. 17 to 19 show the groove 1 useful for reducing or reducing the size of the filter in the frame body portion 3.
3 is provided. FIG. 18 is a sectional view taken along the line DD ′ of FIG. The groove 13 may be formed around the entire circumference of the frame body portion 3 or may be formed at appropriate intervals. The main purpose of the groove 13 is to rub against the inner wall of the drainage port like the above-mentioned protruding piece 2 and the protruding portion 11, but since it can be easily taken out when the filter knob after use is removed, This is to reduce or accelerate the spring property and the contractibility so as to forcibly reduce the size before use. Further, it also functions as a bypass wall for allowing the molding material to preferentially flow into the mesh portion during injection molding. Regarding the bypass wall, Japanese Patent Application No. 5-323066 and Japanese Patent Application No. 5-323066 of the present applicant.
343196. As a conventional example, actual Kaihei 3
-108074 exists, but the knob portion is formed by converging the central portion of the net-like portion, and there is a drawback that it cannot be manufactured in a single step because it is not by injection molding like the present invention. Since it has a shape that is difficult to apply to various drainage ports having different inner diameters, the function and effect of the present invention are not provided.

FIG. 20 shows a bulging portion 15 on the filter portion 1.
Is provided to lock slender dust such as hair. In some cases, the bulging portion 15 may be used as a grip portion for removing the filter knob. The bulging portion 15 may be a so-called accumulating portion for accommodating gas, air, or excess molding material during injection molding. FIG. 21 is a cross-sectional view of the mold at the time of injection molding of FIG. 16 is a gate for injecting the molding material. In FIG. 22, the bulging portion 15 is provided on the frame body portion 3 of the filter, and the bulging portion in this case also plays the role of a reservoir of molding material completely during injection molding. 23 to 24, the protruding piece 2 is 8 to 10
It is provided around this number, and is useful as a large-sized filter with a diameter of about 120 mm, which is often used in a bathroom washing room or a kitchen sink. Since the drainage port of a bathroom washing place is relatively shallow and the water flow and water pressure are high, it is necessary to more strongly scrape the protruding piece 2 against the inner wall of the drainage port. As a modified embodiment for addressing this point, FIG. 32 and FIG. 33 show an embodiment of the same kind in which more powerful rubbing is possible. With regard to FIGS. 32 and 33, there is a conventional example 59-76671,
A large number of projecting portions on the periphery serve as a filter portion, whereas the projecting portions of the present invention are locked to the inner wall of the drainage pipe, and the action and effect thereof are different. And, in the case of the present invention, the configuration is also completely different in that the guide band 14 which is advantageous for manufacturing the mesh filter is formed on the filter portion 1. 26 (a) and (b) and FIG. 27 (a) and (b) are a top view and a cross-sectional view of a modified embodiment of the present invention that is composed of only mesh yarns without the frame body portion 3. In the example of the present invention, since there is no frame portion, a large-diameter induction band 14 is provided as a portion with which the push pin contacts when the product is released from the mold.
The conventional wire mesh filter cannot be shaped like the example of the present invention because the sharp edges of the wire mesh may damage the inner wall of the drainage port or human hands.
By eliminating the frame part 3, the amount of material used is greatly reduced. The grip portion 12 is formed on the guide band 14 for picking up the filter of the used filter. 28 to 3
1 does not have the frame part 3, but surrounds the filter part 1 with a net thread. In order to have the effect of increasing the strength of the mesh and to improve the appearance of the product, the frame is surrounded by a mesh thread. It also has an induction band 14 for improving the formability.

34 to 38 are a top view and a sectional view of a three-dimensional filter instead of a flat plate, and the shape is similar to that of a conventional wire mesh filter. The difference is that this type of shape is manufactured by integral molding by injection molding, so that the number of steps can be reduced and an inexpensive plastic material or the like can be used to reduce the manufacturing cost. Figure 3
In No. 4, by providing the ring-shaped guiding band 14 at the connecting portion of the bottom surface filter portion 19 and the side surface filter portion 20, the flow of the molding material from the bottom portion to the side surface is ensured. At the center of the bottom surface filter portion 19, a grip portion 1 which also functions as a gate
2 is formed. In FIG. 35, a protruding piece 2 for removing the filter knob is formed on the peripheral edge of the side surface filter portion 20. In FIG. 36, a ring-shaped guiding band 14 is provided at the connecting portion of the bottom surface filter portion 19 and the side surface filter portion 20, and the frame body portion 3 is formed at the peripheral edge of the side surface filter portion 20. In FIG. 37, the bottom filter portion 19 is not provided with the grip portion 12, but the bulging portion 15 that can be used as the grip portion is formed in the frame body portion 3. The bulging portion 15 acts as a gas, air, or molding material reservoir during injection molding. The frame body 3 is provided with holes 21 so that the filters can be stacked and transported and sold.
By fitting the bulging portion 15 here, the filters can be stacked. The state is shown in a partially enlarged view of FIG. FIG. 39 is a sectional view of a mold for obtaining the above-described three-dimensional filter. Grooves are not formed in the lower mold 17, and net grooves 22, side net grooves 23, and frame body portions are formed in the upper mold 18. The groove for 3 and the groove for the grip portion 12 are formed. FIG. 40 shows that the bulging portion 15 is provided on the upper portion of the side surface filter portion 20 to perform a function of accumulating and releasing the molding material, which is a kind of induction band at the time of injection molding. What is used as a gripping part at the time of taking is shown. 41 is a sectional view of FIG. 40, and FIG.
It is a metal mold partial cross section at the time of molding a 0 filter.
A groove for forming the bulging portion 15 into which the push-out pin 24 can be inserted / removed is provided in a part of the side surface net groove 23. At the time of molding, the bulging portion 15 is formed by inserting the push-out pin 24 partway into the groove. 43 to 45 show another modified embodiment of the present invention, which is characterized by the filter unit 1.
It is not a mesh but a slit. And
Each of them has a protruding piece 2 for picking up the filter, and the surface thereof is plated with copper. Due to the bactericidal action of copper ions, slimy and foul odors can be prevented. Further, a deodorizing antibacterial agent may be mixed in the resin material.

An embodiment of the large-sized plastic filter of the present invention will be described below in detail with reference to FIGS. 46 to 50. FIG. 46 shows the optimum diameter 120 for use in a bathroom washroom.
A top view is shown for a filter of about mm.
The filter part 1 is surrounded by a relatively thick and wide frame part 3 in order to make the filter strong and to gently bend the filter surface, and the induction band 14 is formed radially from the center of the filter part 1. In order to contribute to the reinforcement or bending of the filter surface, a ring-shaped guiding band 29 having a shape similar to the appearance of the filter is provided. This may be a perfect circle, an ellipse, or a quadrangle, but in any case, it is characterized in that it is formed in a substantially closed shape. 47 is a bottom view of FIG. 46, in which a locking pin for suppressing movement of the filter due to water flow is formed at the center of the guide band 14. The locking pin 30 can be used both as a gate for injecting resin at the time of molding and as a push pin contact portion at the time of mold release. The locking pin 30 is inserted into the central hole of the stainless steel plate already installed at the drainage port of the bathroom washing room, or the elongated hole located substantially at the center thereof to suppress the movement of the filter. The locking pin 30 may have a flat plate-shaped rib. Further, the locking pin 30 is formed by the ring-shaped guiding band 29 or the radial guiding band 1
It may be planted at a plurality of positions on the four. 48 is the same as FIG.
A side view is shown, and a plurality of grips 12 are provided on the frame body 3. The grip portion 12 may be a flat plate-shaped rib or an elongated pin, but when it is installed in a bathroom, the plate-shaped rib is desirable for preventing danger. Further, the present invention also has an effect as a drift prevention rib for preventing hair or the like once attached to the filter from drifting in the drainage channel of the bathroom due to the flow of water. Then, the ring-shaped guiding band 29 and the radial guiding band 14 are partially joined together to reinforce the strength of the filter surface, and the guiding band 14 is formed by being extended beyond the diameter of the ring-shaped guiding band 29 and contracting. With more parts, it is more effective for bending the filter surface. As one of conventional examples, JP-A-4-24334
There is, but this is a metal fitting for pressing the mesh filter made of synthetic resin woven cloth into the drainage port, and what is integrally molded with the filter portion as in the present invention,
Its shape and action are different. Another conventional example, the actual opening 63-9370 has a dogleg-shaped leg for engaging the inner wall of the drainage port, but the inner wall of the drainage port supports the cross shape from the opening. The rod has a reverse taper of about 1 mm to 5 mm, and even a dogleg-shaped leg has no effect in actual engagement. Further, when the filter is engaged with the eye plate, it is difficult to take out the filter when replacing it. Further, the shape is complicated and it is not suitable for integral molding of plastics. FIG. 49 shows a configuration in which the grip portion 12 is provided on the guide band 14 and in the center of the filter.
Shows a top view and (b) shows a side view. It has a frame body portion 3, a radial guide band 14, and a ring-shaped guide band 29. Figure 50
Is a shape in which the guide band 14 does not protrude from the ring-shaped guide band 29, which is taken into consideration in terms of design.
(A) shows a top view and (B) shows a side view. As a conventional example, there is a full-fledged Shokai 56-68074, which is a coarse filter in which a plurality of ring-shaped ribs and linear ribs are combined, and a rod for preventing floating and a weight are used in the center thereof. It is provided with a cap. Although the concept of the external shape may be similar, the floating cap is made separately, and since there is no fine mesh filter part, what is integrally molded of the fine mesh filter of the present invention, It is completely different in terms of its specific configuration and operational effects. FIG. 51 shows a case where the ring-shaped guiding band 29 is applied to a quadrangular filter, and the ring-shaped guiding band 29 has an elliptical shape so as to have a shape substantially similar to its appearance. This may be square. The grip portion 12 is provided at the center of the radial guide band 14, and the frame body portion 3 is formed so as to surround the filter portion 1. FIG. 52 shows an embodiment in which the filter portion 1 is further curved, in which the large-diameter induction band 14 which is contracted toward the center of the filter is provided, and the bending induction band 32 is further thickened. Is. The degree of curvature is also affected by the shrinkage rate of the plastic material, but its shape is important to ensure reliable bending. By the way, the shrinkage rate of DURACON (a trademark of Polyplastics Co., Ltd.) is 20 to 35 thousandths, the liquid crystal polymer is zero, and the polypropylene is 16 to 25 thousandths. In the case of the present invention, only the shrinkage rate is concerned. It means that it is better to use Duracon. FIG. 53 shows another embodiment in which the filter portion 1 is further curved.
Is wide or thick. The filter part 1 is provided with a ring-shaped guide band 29 and a radial guide band 14, and the curved part is surely curved by the interaction thereof. FIG. 54 has a frame part 3 surrounding the filter part 1,
A radial guide band 14 is provided in the ring-shaped guide band 29. Then, a flat plate-shaped movement suppressing rib 3 that suppresses the movement and floating of the filter on the ring-shaped guiding band 29.
1 was set. In the figure, it is provided at three places, but any number may be provided. When it is attached to the drain of the wash basin, three or more locations are preferable for suppressing movement. If it is attached to the drain of the bathroom, it may be installed in one place. FIG. 55 shows an example of a foldable filter, which is convenient for carrying and exhibiting. (A) is a view in which the filter is opened, and at the position of the frame body portion 3 facing the guide band 14 in the longitudinal direction, the hinge portion 3 is provided.
3 is formed. The net yarn of the filter part 1 is 0.3 to 1 mm
Since it has a small diameter, it can be easily bent. (B) is a folded view with the guiding band 14 as a fulcrum, and the frame body portion 3 and the filter portion 1 are
The gripping portions 12 are sandwiched by folding one side of each side.

56 to 59 show an embodiment for adapting the size of the filter to the drain ports having various sizes. FIG. 56 shows a structure in which a plurality of frame parts 3 and a plurality of filter parts 1 are concentrically arranged.
You can easily pull the frame body part 3 by hand and cut it into the notch part 3
4 is provided. As a result, even one filter can be applied to 6 types of drainage holes with a diameter of 27 mm to 41 mm, which is convenient for the user. Fig. 57
Shows another embodiment, in which a plurality of frame bodies 3 are connected by a connecting portion 35. Since this connecting portion 35 is formed by integral molding of plastic, it can be torn by hand,
You can cut it with scissors. In FIG. 58, a plurality of frame bodies 3 are continuously provided, and (a) shows a top view thereof. The frame body 3 has thin ends connected to each other, and the size of the filter can be easily adjusted by cutting the frame body 3 from the notches 34. (B) shows a cross-sectional view, and each frame body portion 3 is torn off from the thin cut portion 36. FIG. 59 shows a case in which a plurality of frame bodies 3 are continuously provided, a plurality of cut portions 34 are provided, and the respective cut depths are changed. It is possible to further fine-tune the size by cutting off only part of the circumference by appropriately selecting the places to be cut. In this case, it does not have a clean circular shape, but it can be adapted to various drainage sizes by pushing it in slightly. FIG. 63 shows that the guiding band 14 is formed on the filter portion 1, and the locking pin 30 is implanted at each end of the guiding band 14. In this case, if there are two or three guide bands 14,
The number of locking pins 30 is also two or three. 64 to 67
The state in which the filter of the present invention is attached to the drainage port is shown in FIG.
The filter having the filter part 1 and the frame part 3 is placed on the mouthpiece part 37 of the drainage port 8 embedded in the washbasin pottery part 36. Generally, the mouthpiece portion 37 is located lower than the washbasin pottery portion 36, and the mouthpiece portion 37 and the washstand pottery portion 36 are located.
A step portion 38 having a size of about 1 mm to 2 mm is formed between and, and a filter is placed in this gap. A ring-shaped guide band 29 and a radial guide band 14 are formed on the upper surface of the filter to improve the moldability and promote the bending. Further, a plurality of grips 12 for picking up the filter or hooking it by hand are provided on the frame body 3. The grip portion 12 also acts as a drift preventing rib for preventing hair accumulated on the filter from drifting due to the water flow.
In the figure, it is in the form of an elongated pin, but it may be in the form of a flat plate so that it does not hurt when you step on it. Then, a movement suppressing rib 3 which is inserted into the drainage port 8 on the lower surface of the filter and suppresses lifting and movement of the filter due to the water flow.
Three 1s are provided. The diameter of the base portion 37 of the washbasin is approximately 54 mm to 56 mm, and the applicant of the present invention made the filter a diameter of 55 mm as a prototype and applied it to all washbasins. In this case, since the filter is moved to some extent by the water flow, the rib 31 for restraining movement is provided. FIG. 65 shows a top view of the filter of FIG. 64, in which three holding parts 12 are provided on the frame body part 3.
This number may be any number instead of three. The larger the number, the more effective it is to prevent hair drift. In FIG. 66, the grip portion 12 is provided in the center of the upper surface of the filter, and the flat plate-shaped movement suppressing rib 31 is provided on the lower surface. in this case,
Since it is placed on the opening of the washbasin pottery section 36, it is necessary to pay attention to restrain the movement of the filter. Therefore, the weight of the filter is made even heavier and the pressure of water flowing in from all directions is received.
It is effective in suppressing lifting and movement. FIG. 67 shows a case where the filter of the present invention is mounted on the eye plate 27 placed on the drainage port of the bathroom. The movement suppressing rib 30 is inserted into the filter portion 1 of the perforated plate 27 placed in the recess of the bathroom tile portion 39. Most of the eye plates 27 are provided with a small hole having a diameter of about 6 mm at the center thereof, which is utilized. There is no small hole in the center,
Some types have a horizontally long hole, but in that case as well, the diameter is 1
If it is a filter of about 20 mm, the ribs 3 for suppressing movement
Even if 0 moves in the long hole, the plate 27 can be sufficiently covered and the function as a filter is not impaired.

A conventional example of the present invention will be described in detail below with reference to FIGS. 60 to 62. 60 to 62
Shows a conventional wire mesh filter, a stainless steel drainage tray, and a drainage tray made of thin plate metal. Fig. 60
Is used for a washbasin filter and is generally used because of its good workability. However, the metal plate 25 that covers the periphery of the wire mesh 26 is required, and the installation cost thereof is high. The material cost increases the cost.
Further, since the metal plate is bent, it is thick, so that hair and the like are not captured by the filter portion and cling to the periphery of the metal plate. FIG. 61 shows a stainless steel drain tray 27 used for the drain of a bathroom washroom. It has a sufficient weight that can withstand water flow and water pressure, the cool feeling of stainless steel, and the good drainage, but because the material cost itself is high and the workability is poor, the filter part can not be made fine, Actually, a lot of hair and dust are spilling out, so it does not work as a filter. FIG. 62
Shows a drainage tray 28 used in a so-called sink part of a kitchen, and has a long slit or a circular slit as the filter part 1. Although the shape of the filter part 1 has been devised to filter semi-solid food waste in the kitchen, it has the disadvantages of complicated shape, poor processability, high cost, and troublesome cleaning after use. is there. As described above, in the conventional product, the filter function is not good despite the high cost, it is difficult to remove the attached hair etc. from the wire mesh or the perforating structure of the metal plate, and the material is nonflammable and thus cannot be disposable There was an adverse effect. As a negative effect, it is unpleasant to clean the filter as a small problem, and the big problem is that the equipment is destroyed and environmental pollution is caused by dripping hair or dust.

Next, a modified embodiment of the present invention will be described with reference to FIGS. 68 to 73. The purpose is to apply to commercial drains such as barber shops and beauty salons, and rain gutters used in houses. This type of drainage pipe uses a large-diameter vinyl chloride pipe, and in a horizontally installed cylindrical pipe, the above-mentioned flat filter of the present invention cannot perform appropriate filtering. At barber shops and beauty salons, since a large amount of hair is washed off on the washbasin, a filter is installed in a large-diameter drain pipe near the end of the drain pipe to filter a large amount of hair without touching it. . In addition, the rain gutter of the house uses a semi-cylindrical pipe with an open upper part for general household use, and there is a phenomenon in which leaves easily enter and the drain pipe at the end is clogged. An example in which the filter of the present invention is applied to a rain gutter will be described with reference to FIG. It is easy for fallen leaves to enter the drainage pipe 44 that is horizontally arranged along the eaves,
If there is no filter, the falling water pipe 4 will pass through the rainwater receiving part 45.
It gets stuck in 6. It was difficult to easily remove a clogged leaf from the falling pipe because the length of the falling pipe was seamless. Therefore, a filter for preventing the inflow of fallen leaves is required, but in order to install the filter on a horizontal semi-cylindrical pipe, it must have a three-dimensional shape. FIG. 68 shows a filter to be applied thereto, which has a rectangular top filter 40 and a semicircular plate side filter 41 that fits a semicylindrical drain pipe. The three-sided filter portion is provided with a guide band 14 for manufacturing the mesh filter with a high yield.
At the center of the guide band 14, a gate portion 43 for injection molding of plastic remains as a molding trace. A bent portion 42 formed by thin molding is formed at the connecting portion between the top filter 40 and the side filter 41 to form the side filter 41.
It has a shape that can be bent and used at any time. With this shape, there are advantages that the mold production is simple and that no wasteful space is taken up during transportation or exhibition. FIG. 69 is a sectional view taken along the line MM ′ of FIG. 68, in which the bent portion 42 is formed by forming the connecting portion of the top filter 40 and the side filter 41 into a thin wall. 70 is a side view showing a state in which the side filter 41 of FIG. 68 is bent. In this case, some locking means or locking structure is required to maintain the three-dimensional shape in the rain gutter. In order to avoid this, as shown in FIG. 71, the side filter 41 may be fixedly integrally formed with a mold from the beginning. Top filter 4
The guide band 14 is formed at 0, but the guide band 14 is not provided at the side filter 41 having a small area. Whether or not the guide band 14 is provided on the filter may be appropriately selected in consideration of formability. Further, the side filter 41 may be formed in conformity with the shape of the rain gutter. For example, in the case of a large rain gutter for a building such as a factory, since the shape is square, the side filter 41 may be a rectangle shown in FIG. FIG. 74 shows a mold for manufacturing a filter for further improving the present invention. Frame part 3
In order to increase the connection strength of the connecting portion between the net thread portion and the small-diameter net thread portion, the taper is made thicker, and the portion where the frame body groove 47 for forming the frame body portion 3 and the net groove 22 contact The upper mold 18 and the lower mold 17 are provided with tapered portions 48, respectively. Furthermore, in order to promote the curve of the filter surface, the insert 50 is undercut to such an extent that it does not hinder the mold release. Due to this undercut, a braking force is applied to the frame body portion 3 at the time of releasing the mold, and a force opposite to the direction in which the filter is released from the mold is applied to accelerate the bending of the filter.

[0016]

Industrial Applicability As described above, according to the present invention, a tissue for a drainage outlet filter, which has been conventionally difficult to remove the hair adhered to the filter, is formed by integrally molding plastic and finishing the filter with a mirror finish or a curved finish. The filter for the drainage port, which can be easily wiped off with paper etc. and which was not disposable in the past in terms of structure and cost, has been developed by developing new mold manufacturing technology and molding technology and making various improvements to the filter structure. It is epoch-making in that it is disposable and has improved filtering function. By injection molding with plastic and adopting an induction band, the production speed can be increased, the yield is good, and the inspection process can be omitted. At the same time, it can contribute to the prevention of equipment damage and environmental pollution. There is also an advantage. Although various embodiments have been described above, it goes without saying that other embodiments utilizing the principle of the present invention are also covered by the protection of the present invention.

[Brief description of drawings]

FIG. 1 is a top view of a filter of the present invention.

FIG. 2 is a top view of another embodiment of the filter of the present invention.

FIG. 3 is a top view of another embodiment of the filter of the present invention.

FIG. 4 is a top view of another embodiment of the filter of the present invention.

FIG. 5 is a top view of another embodiment of the filter of the present invention.

6 is a cross-sectional view of FIG.

FIG. 7 is a top view of another embodiment of the filter of the present invention.

8 is a cross-sectional view of FIG.

FIG. 9 is a top view of another embodiment of the filter of the present invention.

10 is a cross-sectional view of FIG.

FIG. 11 is a top view of another embodiment of the filter of the present invention.

12 is a cross-sectional view of FIG.

FIG. 13 is a top view of another embodiment of the filter of the present invention.

14 is a cross-sectional view of FIG.

FIG. 15 is a top view of another embodiment of the filter of the present invention.

16 is a cross-sectional view of FIG.

FIG. 17 is a top view of another embodiment of the filter of the present invention.

FIG. 18 is a cross-sectional view of FIG.

FIG. 19 is a top view of another embodiment of the filter of the present invention.

FIG. 20 is a top view of another embodiment of the filter of the present invention.

21 is a cross-sectional view of the mold of FIG.

FIG. 22 is a top view of another embodiment of the filter of the present invention.

FIG. 23 is a top view of another embodiment of the filter of the present invention.

FIG. 24 is a top view of another embodiment of the filter of the present invention.

FIG. 25 is a sectional view of FIG. 24.

FIG. 26 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

FIG. 27 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

FIG. 28 is a top view of another embodiment of the filter of the present invention.

FIG. 29 is a top view of another embodiment of the filter of the present invention.

FIG. 30 is a top view of another embodiment of the filter of the present invention.

FIG. 31 is a top view of another embodiment of the filter of the present invention.

FIG. 32 is a top view of another embodiment of the filter of the present invention.

FIG. 33 is a top view of another embodiment of the filter of the present invention.

FIG. 34 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

FIG. 35 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

FIG. 36 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

FIG. 37 is a top view and a cross-sectional view of another embodiment of the filter of the present invention.

38A and 38B are a sectional view and an enlarged sectional view of another embodiment of the filter of the present invention.

FIG. 39 is a cross-sectional view of a mold of the filter of the present invention.

FIG. 40 is a top view of another embodiment of the filter of the present invention.

41 is a cross-sectional view of FIG. 40.

FIG. 42 is a cross-sectional view of a mold of the filter of the present invention.

FIG. 43 is a top view of another embodiment of the filter of the present invention.

FIG. 44 is a top view of another embodiment of the filter of the present invention.

FIG. 45 is a top view of another embodiment of the filter of the present invention.

FIG. 46 is a top view of another embodiment of the filter of the present invention.

FIG. 47 is a bottom view of FIG. 46.

48 is a side view of FIG. 46. FIG.

FIG. 49 is a top view and a side view of another embodiment of the filter of the present invention.

FIG. 50 is a top view and a side view of another embodiment of the filter of the present invention.

FIG. 51 is a top view of another embodiment of the filter of the present invention.

52 is a top view of another embodiment of the filter of the present invention. FIG.

FIG. 53 is a top view and a side view of another embodiment of the filter of the present invention.

FIG. 54 is a top view of another embodiment of the filter of the present invention.

FIG. 55 is a top view of another embodiment of the filter of the present invention and a top view of the modified filter.

FIG. 56 is a top view of another embodiment of the filter of the present invention.

FIG. 57 is a top view of another embodiment of the filter of the present invention.

FIG. 58 is a top view and a side view of another embodiment of the filter of the present invention.

FIG. 59 is a top view of another embodiment of the filter of the present invention.

FIG. 60 is a perspective view of a filter of a conventional example.

FIG. 61 is a perspective view of a filter of a conventional example.

FIG. 62 is a perspective view of a filter of a conventional example.

FIG. 63 is a top view of another embodiment of the filter of the present invention.

FIG. 64 is a side view in which the filter of the present invention is attached to the drain port.

FIG. 65 is a top view of the filter of the present invention.

FIG. 66 is a side view in which the filter of the present invention is attached to the drain port.

67 is a side view showing the filter of the present invention attached to a drainage port. FIG.

FIG. 68 is a top view of another embodiment of the filter of the present invention.

69 is a sectional view of FIG. 68.

70 is a side view showing the shape in use of FIG. 68. FIG.

FIG. 71 is a perspective view showing another embodiment of the filter of the present invention.

FIG. 72 is a perspective view when the filter of the present invention is attached.

FIG. 73 is a perspective view of another embodiment of the filter of the present invention.

FIG. 74 is a partial cross-sectional view of the mold of the filter of the present invention.

[Explanation of symbols]

 1 Filter Part 2 Projecting Piece 3 Frame Part 4 Auxiliary Filter Part 6 Gas / Air / Molding Material Reservoir 8 Drainage Port 10 Cross Character Support Rod 12 Gripping Part 14 Guide Band 15 Swelling Part 29 Ring-shaped Guide Band 30 Locking Pin 49 Under Cut part

Claims (28)

[Claims] 1. A filter for hair or the like installed in a pipe of a drainage port of a bathroom or a washbasin, wherein a plastic filter part integrally formed by injection molding of a small-diameter net thread, and an outer peripheral part of the filter part. In addition, at least one protrusion piece having a size that can be pinched by hand is provided, and the protrusion piece is also used as a locking piece for locking the inner wall of the drainage pipe. Plastic filter. 2. The plastic filter for a drainage port according to claim 1, wherein the protruding piece provided on the outer periphery of the filter portion is a mesh portion so as not to impede the water flow from the side drainage port. 3. The plastic for drainage port according to claim 1 or 2, wherein a gas and air pool useful for injection molding or a molding material pool is formed on a projecting piece provided on the outer periphery of the filter portion. filter. 4. A concave portion or a V-shaped groove is formed in a connecting portion between the protruding portion provided on the outer periphery of the filter portion and the filter portion so that the protruding portion can be easily bent substantially at right angles to the filter portion. The plastic filter for drainage according to claim 1, which is characterized in that. 5. A filter for hair or the like installed in a pipe of a drainage port of a bathroom or a washbasin, wherein the entire filter is made of synthetic resin, and the filter part is pinched above the center of the filter part. In order to make it possible to adjust the outer diameter of the filter part by contacting the inner wall of the pipe of the drainage port to lock the filter in the pipe, or to adjust the inner diameter of the pipe to a plurality of inner diameters. A plastic filter for drainage, characterized in that at least three or more protruding pieces are provided. 6. A filter for hair or the like installed in a drainage pipe of a bathroom or a washbasin, wherein the entire filter is made of synthetic resin, and the filter can be pinched above the center of the filter section. A grip portion is provided, and a frame body portion that forms a peripheral end portion of the filter is provided, and a groove or a recess for facilitating dwarfing or reducing the size of the entire filter is formed in the frame body portion. A plastic filter for the drainage port. 7. A filter for hair or the like which is installed in a drainage pipe of a bathroom or a washbasin, on a mouthpiece at the top of the drainage mouth, or so as to cover the mouthpiece portion of the drainage mouth. In addition to being formed of resin, a bulging portion that is a useful gas and air reservoir during injection molding is formed on the mesh portion and / or the frame portion forming the filter, and also used to prevent drifting of hair and the like. A plastic filter for drainage, which is characterized by 8. A filter for hair or the like in which the entire filter is made of synthetic resin, and a filter portion is formed on the bottom surface and side surfaces to make the cross section trapezoidal, and a portion which becomes a gate at the time of injection molding is slightly longer. A plastic filter for drainage, which has a boss portion and a grip portion for taking out the filter. 9. A filter for hair or the like in which the entire filter is made of synthetic resin, and a filter section is formed on the bottom surface and side surfaces to make the cross section trapezoidal, and the filter section above the side surface is injection molded. A plastic filter for a drainage outlet, which is provided with a bulging portion which is sometimes useful as a reservoir of gas and air or a reservoir of molding material, and which is used as a grip portion for taking out the filter. 10. A filter for hair or the like in which the entire filter is made of a synthetic resin, wherein a filter portion is formed on a bottom surface and a side surface, and a frame body portion is formed on the side surface to make the cross section substantially trapezoidal. On the frame part, a bulging part which is a gas and air pool useful for injection molding, or a pool of molding material is provided to serve as a grip part for taking out the filter, and further, trapezoidal filters are stacked. A plastic filter for a drainage port, characterized in that a cutout portion or a hole into which the bulging portion is inserted is provided in the frame body portion so as to be stored. 11. An induction band made of a large-diameter net thread for accumulating and releasing a molding material during injection molding is formed on a mesh filter made of a small-diameter net thread in a substantially radial shape including a circular shape or an elliptical shape. The drainage port plastic filter according to any one of claims 1 to 10, wherein the guide band has a length that does not reach the outer periphery of the mesh filter. 12. The rib according to claim 11, wherein a rib is formed on the large-diameter induction band, and the rib is used as a grip portion for taking out the filter or a locking portion for suppressing movement of the filter. Plastic filter for drain. 13. A drainage in which the entire filter is made of a synthetic resin, and a mesh filter is made of a mesh thread having a small diameter, and a grip portion for taking out from the drain pipe is integrally formed on the mesh filter. In the mouth filter, on the mesh filter, consisting of a large-diameter mesh yarn, and
A drainage port plastic filter, characterized in that an induction band having a length that does not reach the outer periphery of the mesh filter is formed. 14. A hair or the like in which an induction band composed of a large-diameter net thread for accumulating and releasing a molding material during injection molding is formed on a mesh filter composed of a small-diameter net thread for the entire filter. In the filter, a first induction band that is substantially similar to the shape of the filter, and a second induction band that is formed substantially linearly from the center of the filter and that does not reach the outer periphery of the mesh filter. And a mesh filter formed on the mesh filter. 15. The drainage port plastic filter according to claim 14, wherein parts of the first and second induction bands are connected to each other. 16. An elongated pin portion or a flat rib portion is formed on the first or second induction band, and a grip portion for taking out the filter portion or a locking portion for suppressing movement of the filter. 15. The method according to claim 15, wherein the portion is a part.
6. A plastic filter for drainage according to 6. 17. A long frame body is formed around the outer periphery of a mesh filter made of a fine mesh yarn, and is provided on the frame body for grasping for taking out the filter or for preventing hair from drifting. The drainage port plastic filter according to claim 14, wherein a pin portion or a flat plate-shaped rib portion is provided, and a rib for suppressing movement of the filter is formed on the first or second induction band. 18. A mesh filter made of synthetic resin for the whole filter, a wide frame portion surrounding the outer periphery of the mesh filter, and a molding material on the mesh filter at the time of injection molding. In a filter for hair or the like formed with an induction band composed of a large-diameter net thread for accumulating and releasing the pressure, it is possible to adjust the size of the filter by forming a plurality of the frame parts so as to be separable. A plastic filter for the drainage port. 19. The drainage port plastic filter according to claim 18, wherein each of the plurality of frame bodies is provided with a notch for cutting. 20. The plurality of frame bodies are formed with a space therebetween, and a connecting portion for connecting the plurality of frame bodies is provided so that they can be separated when adjusting the size of the filter. Plastic filter for the described drainage port. 21. A hair or the like in which the entire filter is made of a synthetic resin, and an induction band made of a large-diameter net thread is formed on the mesh filter made of a small-diameter net thread to accumulate and discharge the molding material during injection molding. In the filter, a guide band that is formed substantially radially from the center of the filter and has a length that does not reach the outer periphery of the mesh filter is further formed with a thick or wide guide band to make the filter surface gentle. A plastic filter for drainage that has a curved effect on the inside. 22. A hair or the like in which the entire filter is made of synthetic resin, and an induction band made of a large-diameter net thread is formed on the mesh filter made of a small-diameter net thread to accumulate and discharge the molding material during injection molding. In the filter, the guide band is formed substantially radially from the center of the filter, and has a length that does not reach the outer periphery of the mesh filter, and a wide frame portion that surrounds the outer periphery of the mesh filter, and A drainage plastic filter, wherein the thickness or width of the frame portion is set to a volume amount that can sufficiently contribute to the contraction for bending the filter surface. 23. A hair or the like in which the entire filter is made of synthetic resin, and an induction band made of a large-diameter net thread is formed on a mesh filter made of a small-diameter net thread to accumulate and discharge the molding material during injection molding. In the filter, the guide band is formed substantially radially from the center of the filter, and has a length that does not reach the outer periphery of the mesh filter, and a wide frame portion that surrounds the outer periphery of the mesh filter, and A plastic filter for drainage, characterized in that hinges for bending are provided at opposite positions of the frame body. 24. The entire filter is made of synthetic resin,
A filter for hair, etc., which has an induction band made of a large-diameter net thread that stores and discharges the molding material during injection molding on a mesh filter made of a small-diameter net thread. 3 mesh filter parts
The surface is formed, one surface at the center is a top surface filter, the other two surfaces are side surface filters, and at least one of the three surfaces is formed substantially radially from the center of the filter, and the mesh is formed. A plastic filter for a drainage outlet, which is characterized in that an induction band having a length that does not reach the outer periphery of the filter is formed. 25. The drainage plastic according to claim 24, wherein a hinge portion is provided between the top filter and the side filter so that injection molding can be performed on a press-cut surface on the same plane of a mold. filter. 26. The drainage port according to claim 24, wherein the shape of the top surface filter is a rectangular plate shape, and the shape of the side surface filter is similar to the shape of a pipe on which the filter is placed. For plastic filters. 27. The drainage port according to claim 1, wherein the connecting portion between the frame body portion and the net yarn portion having a small diameter is tapered to increase the connection strength. For plastic filters. 28. A mold for manufacturing a drainage port filter, wherein the whole filter is made of a synthetic resin, and a mesh filter is formed of a mesh thread of a small diameter. A frame body of a mold for forming the frame body part. The drainage port plastic filter according to any one of claims 1 to 27, characterized in that the insert facing the groove is undercut to such an extent that it does not hinder the mold release, thereby facilitating the bending of the filter.