JPS607618Y2 - 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. This locking piece and the engaging piece hold the opening edge of a container such as a coffee cup from the inside and outside, thereby stably placing it on the container. This invention relates to an improvement of a filter that can be fixed in place.

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

This known device forms bent support pieces through folds on both sides of a support plate with a pouring hole in the center, and protrusions are connected to the edges of the bending support pieces to form a rough surface. The outer periphery of a bag made of filter paper is attached to the back side of the periphery of the pouring spout, and in use, a folded support piece is raised from the above fold as a base and is connected to the edge of the bag. The projecting piece is inserted into the rim of a container such as a cup and placed on top of the container, and hot water is poured from the pouring spout onto the coffee powder that is put into the bag, so that the coffee liquid that is extracted is received in the container. It can be conveniently used as a filter for drip coffee, etc.

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 is a danger that

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).

), which can easily pop out and come off, and especially in the case of a morning glory-shaped container where the edge of the container spreads outward, the locking of the protrusion is extremely shallow, and therefore there are certain restrictions on the container used. there were.

In addition, 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 risk of

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 supporting leg pieces 2, 2 are integrally formed by cutting out a rectangular sheet from a single sheet, and are separated by bending lines 3.3 provided between the substrate and each supporting leg piece. It is like that.

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 is made by extending two adhesive pieces 6.6 symmetrically from the opening edge of the case body and gluing the peripheral edges of these adhesive pieces to the bottom surface of the substrate. It is attached 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 by making the edges of the adhesive pieces 6, 6 almost coincide with the edges of the board, while the left and right widths are the widths that exceed the diameter of the spout and reach the bottom surfaces of the left and right support leg pieces. 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. is an engagement piece provided so as to protrude from the edge 13 of the notch portion, facing the engagement piece.

The engaging pieces 12 are provided symmetrically with the center line 8 in between, and each tip thereof is placed close to the locking piece 11.

The filter of the present invention is constructed as described above.The operation and effects of the filter will now be explained through actual use.
The left and right supporting leg pieces 2, 2 extending from both sides of the bending line 3,
3 as a base point and stand upright, then straddle the container 14 such as a coffee cup so that the edge of each leg of the support leg piece faces the edge of the container, and then install it on this support leg piece. While attaching the locking piece 11 to the outer peripheral surface of the rim, push the other engaging piece 12.12 into the inside of the rim, and then bring the edge 13 of the notch 9 into contact with the rim of the container to secure the rim of the container. Place and fix it in an upright position.

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 14, 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 engagement 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 difficult to match the locking pieces and engagement pieces formed in a certain shape to achieve a constant locking state. It is.

Regarding this point, the present invention provides engaging pieces 12, 12 that engage inside the edge of the container and protrude at intervals in the width direction, thereby allowing two points to be attached to the inner surface of the container as shown in FIG. The locking piece 11 formed in a strip shape is wrapped around the outer circumferential surface along the curved surface. This allows you to get a nice bite.

In particular, contact at these three points is extremely convenient because it is not affected by changes in the diameter of the container and can always provide stable contact.

After the filter is placed and fixed on the container in this manner, a predetermined amount of coffee powder is put into the filter paper bag 4, and hot water is poured through the pouring spout 5 to extract coffee liquid.

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 rim of the container.
Since the locking pieces 11 are brought into contact with the outer circumferential surface and 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. Since it can accommodate changes in the shape of the container, there are no restrictions on the containers that can be used, which is extremely convenient.

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 drawings]

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-V in FIG. 3. 1 is a substrate, 2 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, and 12 is an engaging piece.

Claims (1)

[Scope of utility model registration request] A pair of supporting leg pieces are integrally extended symmetrically from both sides of the board with a pouring hole in the center via bent lines, and by standing up the supporting leg pieces, the board can be supported horizontally. On the other hand, the opening edge of a filter paper bag is fixed to the bottom surface of the substrate so as to surround the pouring port, and in the filter provided in a suspended form, a filter paper bag is fixed in the width direction near the leg end edges of the pair of support leg pieces. A notch is formed, a band-shaped locking piece is provided on the end edge of the leg, and a pair of locking pieces are provided protruding at an interval from the edge of the notch opposite to the locking piece. A filter characterized by: