JPS607619Y2 - filter - Google Patents

Description

[Detailed description of the invention] The present invention has a pair of symmetrical support legs extending from both sides of the substrate, which has a spout in the center, via bent lines, while the lower surface of the substrate has the above-mentioned support legs. The opening edge of a filter paper bag is fixed so as to surround the sprue, and the base plate is supported horizontally by raising the support leg piece, and the filter paper bag is suspended from the lower surface of the substrate, and coffee powder, for example, is poured into the filter paper bag. This invention relates to an improved device for extracting a filtrate by pouring hot water into a material to be filtered through a spout.In particular, this device has a locking piece attached to each end of the support leg piece that can be raised up. The locking claw and the locking piece hold the opening edge of a container such as a coffee cup from the inside and outside, while the locking piece has a locking piece that is opposite to the locking claw. Small protrusions that protrude inwardly are provided to face each other, and when the opening edge of the container is clamped, these small protrusions are brought into contact with the outer circumferential surface of the opening edge, and are opposed to the above-mentioned engaging piece which abuts on the other inner circumferential surface. The present invention relates to an improvement of a filter that can be placed and fixed on a container in a stable state.

Previously, this type of filter was devised in 1983-2703.
The number idea is known.

In this known device, bent support pieces are formed through folds on both sides of a support plate having a pouring hole in the center, protrusions are connected to the edges of the bent support pieces, and further, The outer periphery of a bag made of filter paper is attached to the back side of the periphery of the pouring spout. When in use, a folded support piece is raised up from the above fold as a base, and a protrusion connected to the edge of the support piece is raised. The piece was placed on the edge of a container such as a cup and placed on top of the container, and hot water was poured from the pouring spout onto the coffee powder that was put into the bag, so that the coffee liquid was received by the container. .

However, a major defect in this filter is that the upright support piece is extremely unstable when placed on a container such as a cup, and may fall off the edge of the container or the filter itself may fall. There was a risk of

In other words, in the above-mentioned known filter, the protruding piece connected to the edge of one support is simply inserted into the opening edge of the container, so that the supporting piece bent from the crease as the base point is caused by the restoring force of the material. When a force that tries to return to flatness is applied (this restoring action always works, although there are some differences depending on the material or the strength of bending).

), and can be easily removed.Furthermore, in the case of a morning glory-shaped container where the edge of the container spreads outward, the locking of the protrusion becomes shallow and the locking force is almost eliminated. There was a problem in that there were certain restrictions on the containers used.

Furthermore, since the protruding piece only penetrates inside the rim of the container, it is unstable against lateral movement, and the edge of the support piece that comes into contact with the rim comes off and falls into the container, causing it to fall over. There is a danger.

In particular, when using a filter, the coffee powder is stored in a bag that bears its weight, and at the same time hot water is poured into the bag, so the bag tends to move due to the inflow pressure and there is a risk of it falling over while pouring hot water. be.

Of course, it is possible to support the filter with your hands when pouring the hot water, but since boiling water is usually used, there is a risk of burns, and this is not preferred as a workaround.

The present invention was devised in view of the above-mentioned defects, and its purpose is to enable the left and right support leg pieces that support the substrate of the filter to be firmly fixed to a container such as a cup. In addition to preventing lateral movement, it also prevents the container from falling off the edge, allowing it to be placed in a stable state, while always exerting a constant engagement force for containers of various shapes. An object of the present invention is to provide a filter that is improved so that it can be placed stably.

The present invention will be explained below with reference to the drawings. 1 is a board made of a sheet having the required rigidity, such as a sheet of cardboard or synthetic resin, and 2 is a board made of a sheet having the required rigidity, such as a sheet of cardboard or synthetic resin; These are supporting leg pieces extending symmetrically, and 4 is a filter paper bag attached integrally to the lower surface of the substrate.

The substrate 1 and the left and right support leg pieces 2, 2 are integrally formed by cutting out a rectangular sheet from a single sheet, and are designed to be split along bending lines 3.3 provided between the substrate and each support leg piece. It's Nishide.

A substantially rectangular pouring hole 5 is formed in the center of the substrate by making a notch at the same time as the substrate is cut out.

The filter paper bag 4 is made of filter paper, and two adhesive pieces 6.6 are extended symmetrically from the opening edge of the case body, and the peripheral edges of these adhesive pieces are adhered to the lower surface of the substrate. It is attached so as to surround the pouring port 5.

The filter paper bag 4 shown here is made by folding a substantially rectangular filter paper into two at the center, then folding each of the three folded pieces back at the center, and using the folded parts as adhesive pieces 6, 6. The edge portions of the other overlapping pieces are joined to form a flat bag to form a filter paper bag.

Then, the front and rear widths are made equal so that the edge of the adhesive piece 6゜6 and the edge of the board almost match, while the width on the left and right is the width that exceeds the diameter of the spout and reaches the bottom surface of the left and right support legs. This covers substantially the entire lower surface of the substrate, and both left and right ends thereof cover part of the lower surfaces of both supporting leg pieces.

Further, as shown in the figure, in the attached state, the opening edges 7 of the flat bag which normally close together are attached along a center line 8 passing through the center of the base plate and both supporting leg pieces.

9.9 is the leg end edge 10 of the supporting leg pieces 2, 2 which are provided symmetrically.
, 10, and 11 is a strip-like locking piece formed on the leg end edge by forming this notch. 14.14 is an engagement piece provided to face this engagement piece and protrude from the edge 13 of the notch, and 14.14 is an edge on the engagement piece 11 side facing this engagement piece. It is a small protrusion that protrudes inward from 15.

The engaging pieces 12 are arranged symmetrically with intervals between the center lines 8, and each tip thereof is brought close to the edge 15 on the side of the locking piece 11, and the other end is placed opposite to these engaging pieces. The small protrusions 14, 14 are provided near both ends of the notch 9 so as to protrude to the sides of each engaging piece so that both are offset.

The filter of the present invention is constructed as described above. Next, to explain its function and effects through actual use, first, the left and right supporting leg pieces 2, 2 extending from both sides of the base plate 1 are connected to the bending line 3. 3 as a base point, bend it downward and stand it up.

Next, each leg edge of the supporting leg piece faces the edge of the container so as to straddle the container 16 such as a coffee cup, and the locking piece 11 provided on the supporting leg piece is placed along the outer peripheral surface of the edge, and the other end edge of the supporting leg piece faces the edge of the container. The engagement piece 12.12 is inserted into the inside of the edge, and the edge 13 of the notch 9 is brought into contact with the edge of the container to be placed and fixed on the edge of the container 16 in an upright manner.

FIG. 3 shows this mounting state, in which the supporting leg pieces 2, 2 have their respective locking pieces 11 in contact with the outer circumferential surface of the edge of the container 16, and the other engaging pieces 12, 12. Since it is brought into contact with the inner peripheral surface, it is clamped from the inside and outside.

By the way, most coffee cups generally have circular opening rims, and their sizes vary, so
Even if this edge is clamped from the inside and outside by the locking piece and the engaging piece, stable fixation cannot always be obtained in either case.

In particular, since the contact position changes between large-diameter containers and small-diameter containers, it is important to match the locking pieces and engagement pieces formed in a certain shape to always maintain a constant locking state. Have difficulty.

Regarding this point, in the present invention, in particular, the engaging pieces 12, 12 that engage inside the edge are provided protrudingly spaced apart in the width direction, while the engaging pieces 12, 12 are provided inwardly from the locking side opposite to each engaging piece. Two small protrusions 14.14 are provided protruding toward the edge of the container 16, so that two engaging pieces are provided on the inner surface and two small protrusions are provided on the outer surface of the container 16, as shown in FIG. They are clamped at four points on the inside and outside so that they are in contact with each other, so that the edge of the container, which forms an arc, can be securely and stably fixed.

This clamping based on contact between the inside and outside of the container at four points is not particularly affected by changes in the diameter of the container, that is, changes in the curvature of the arc surface, and constant clamping can always be obtained, compared to the conventional filters mentioned above. Thus, stable fixation can be obtained in a jumping manner.

Now, after fixing it on the container in this way, a predetermined amount of coffee powder is put into the filter paper bag 4 of the filter of the present invention, and hot water is poured from the spout 5 to extract the coffee liquid directly into the container. I will let you do it.

The filter of the present invention is used as described above, and the two engaging pieces 12 and 12 are brought into contact with the inner peripheral surface of the edge of the container, and the small Since the protrusions 14, 14 are in contact with each other and are clamped and fixed from the inside and outside, the support leg pieces will not come off unexpectedly, so you can work with peace of mind when adding coffee powder or pouring hot water, and the shape of the container It is extremely convenient because it can accommodate changes in the amount of water, so there are no restrictions on the containers that can be used.

In addition, as mentioned above, since the engaging piece and the locking piece are clamped from the inside and outside, the supporting leg piece will not bend too much against the board, or vice versa. Even if it is small, it will not fall off due to the repulsion of the support leg pieces, so the assembly work is easy and it can be set reliably.

As shown in the figure, it is more advantageous to have a plurality of parallel bending lines 3, since this makes it easier to bend the supporting leg pieces and also accommodates the diameters of containers of different diameters.

Furthermore, in this case, if each station curve is made into a concentric parallel arcuate curve, the flat supporting leg piece will exhibit an arcuate surface due to bending, resulting in a strong rise, which is preferable for supporting the board.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a plan view, Fig. 2 is an exploded perspective view, Fig. 3 is an explanatory perspective view of the state of use, and Fig. 4 shows the main parts in the state of use. FIG. 5 is an enlarged longitudinal sectional view taken along the line -V in FIG. 3. 1 is a substrate, 5 is a support leg piece, 3 is a bending line, 4 is a filter paper bag, 5
9 is a spout, 9 is a notch, 10 is a leg edge, 11 is a locking piece, 12 is an engaging piece, 13 is an edge of the notch opposite to the locking piece, 14 is a small protrusion, and 15 is a This is the edge of one side that is locked.

Claims (1)

[Scope of utility model registration request] A pair of support leg pieces are integrally extended symmetrically from both sides of the board with a pouring hole in the center via a bent line, and by standing up the support leg pieces, the board can be supported horizontally. On the other hand, the opening edge of a filter paper bag is fixed to the lower surface of the substrate surrounding the pouring spout, and in the integrated filter, a notch is formed in the width direction near the leg edge of the pair of support leg pieces. A belt-shaped locking piece is provided on the end edge of the leg, and a pair of locking pieces are provided protrudingly spaced apart from the edge of the notch opposite to the locking piece, and A filter characterized in that a small protrusion is provided on one edge of the locking side to face each of the locking pieces.