Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
  • B01D29/13—Supported filter elements
  • B01D29/23—Supported filter elements arranged for outward flow filtration
  • B01D29/27—Filter bags

Definitions

• the present invention relates to a filter and a filtration set, in particular to a filter and a filtration set for coffee extraction.
• Patent Document 1 describes the problems associated with both paper and cloth filters.
• paper filters use virgin pulp, which places a heavy burden on the environment.
• coffee components coffee oil, etc.
• paper filters have the problem of reducing the coffee aroma and flavor.
• cloth filters for example, flannel cloth filters made of flannel fabric
• flannel cloth filters made of flannel fabric are prone to bacterial growth after use, and when the cloth filter dries after use, it can emit the oxidized smell of coffee oil. For this reason, the cloth filter requires maintenance in which it is soaked in water and stored between uses.
• the cloth filter is used together with a filter holder having a handle portion (gripping portion) and a wire portion (frame portion) (for example, Patent Document 2).
• a filter holder having a handle portion (gripping portion) and a wire portion (frame portion)
• the wire insertion portion (upper end portion) of the cloth filter needs to be inserted into the frame portion, which is very time-consuming.
• the cloth filter needs to be removed from the frame portion. This removal is more time-consuming than the insertion. This is due to the increased friction of the cloth filter when it becomes wet during the coffee extraction process. For this reason, there are also cases where the cloth filter attached to the filter holder is stored immersed in water. This type of storage poses hygiene problems due to the proliferation of bacteria attached to the grip portion.
• Patent Document 1 discloses an idea that does not use a filter holder.
• this does not meet the expectations of consumers of the coffee extraction style (cloth drip method) in which a filter holder with a cloth filter attached is held in one hand and hot water is poured with the other to maximize the aroma and flavor of the coffee.
• a cloth filter is installed in a paper dripper, as in Patent Document 1, there is a drawback in that the extraction time is too long, resulting in changes to the extracted contents. For example, it becomes easier for the smell of oxidized oil to occur. Also, the bitterness from the skin of the coffee beans can be emphasized.
• Patent Document 2 also discloses an idea for improving the flannel drip method, but does not yet resolve the above-mentioned problems with the flannel drip method.
• the idea of Patent Document 2 still requires the insertion of the frame-shaped part. For this reason, the idea of Patent Document 2 does not yet resolve the above-mentioned problems that arise from the insertion of the frame-shaped part.
• the object of the present invention is to provide a filter that is easily attached to and detached from a filter holder, and a filter set that includes such a filter.
• a filter that is detachably provided to a filter holder including a grip portion and a frame portion provided on the grip portion,
• the filter includes a filter portion having an upper opening and made of at least one substrate;
• the filter is characterized in that the filtering portion has an insertion portion through which the gripping portion can be inserted.
• the filtration portion is composed of a plurality of base material pieces divided along a circumferential direction thereof, The filter according to (1) above, wherein the insertion portion is provided near a gap between two of the plurality of base pieces.
• auxiliary portion includes a fixing member that fixes the engagement portion to the frame-shaped portion, and a holding member that maintains the engagement portion fixed to the frame-shaped portion.
• a filter holder including a grip portion and a frame portion provided on the grip portion;
• a filter set including a filter removably provided on the filter holder,
• the filter comprises:
• the filter includes a filter portion having an upper opening and made of at least one substrate;
• the filtering part has an insertion part through which the grip part can be inserted.
• the present invention provides a filter that is easily attached to and detached from a filter holder, and a filter set that includes such a filter.
• FIG. 1 is a perspective view showing a filtering tool set according to a first embodiment of the present invention.
• FIG. 2 is a perspective view showing a filter holder according to the first embodiment of the present invention.
• FIG. 3 is a perspective view showing the filter according to the first embodiment of the present invention.
• FIG. 4 is a top view showing the filter according to the first embodiment of the present invention.
• FIG. 5 is a side view showing the filter according to the first embodiment of the present invention.
• FIG. 6 is a perspective view showing an example of a method for attaching a filter to a filter holder in the filtering tool set according to the first embodiment of the present invention.
• FIG. 1 is a perspective view showing a filtering tool set according to a first embodiment of the present invention.
• FIG. 2 is a perspective view showing a filter holder according to the first embodiment of the present invention.
• FIG. 3 is a perspective view showing the filter according to the first embodiment of the present invention.
• FIG. 4 is a top view showing
• FIG. 7 is a perspective view showing an example of a method for attaching a filter to a filter holder in the filtering tool set according to the first embodiment of the present invention.
• FIG. 8 is a perspective view showing an example of a method for attaching a filter to a filter holder in the filtering tool set according to the first embodiment of the present invention.
• FIG. 9 is a diagram for explaining the function of the auxiliary portion of the filter in the filtering tool set according to the first embodiment of the present invention.
• FIG. 10 is a diagram for explaining the function of the auxiliary portion of the filter in the filtering tool set according to the first embodiment of the present invention.
• FIG. 11 is a diagram for explaining an example of a method for storing a filter according to the first embodiment of the present invention.
• FIG. 12 is a schematic diagram showing a filter according to a second embodiment of the present invention.
• the filtering device set of the present invention will be described in detail below based on the preferred embodiment shown in the attached drawings.
• the upper side in the drawings will be referred to as “upper”, the lower side as “lower”, the left side as “left”, the right side as “right”, the front side of the page as “front”, and the back side of the page as “rear”.
• FIG. 1 is a perspective view showing a filter set according to a first embodiment of the present invention.
• FIG. 2 is a perspective view showing a filter holder according to a first embodiment of the present invention.
• the filter set 10 of this embodiment includes a filter 1 and a filter holder 7.
• the filter set 10 is configured to extract coffee by a cloth drip method.
• the cloth drip method includes a method in which the filter set 10 is held by hand and a method in which it is held by a filter server or the like.
• the filter set 10 is applied to, but is not limited to, beverage extraction applications, cooking applications, and the like.
• Beverage extraction applications include coffee extraction applications, tea extraction applications for making black tea, green tea, and the like, and the like.
• Cooking applications include fruit juice extraction applications such as lemon juice, and meat and fish broth extraction applications.
• the filter set 10 is preferably applied to beverage extraction applications, and more preferably applied to coffee extraction applications.
• the filter set 10 may include other components (for example, a container 6 shown in FIG. 11).
• the filter set 10 includes the container 6 to improve the convenience of a user who uses the container 6 to store the filter 1 after use.
• the container 6 will be described later.
• the filter holder 7 will be described.
• the filter holder 7 has a grip portion 71 and a frame-shaped portion 72.
• the grip portion 71 has a function of being gripped by the hand of a user of the filtering tool set 10.
• the grip portion 71 in this embodiment is made of an elongated metal member.
• the gripping portion 71 has a bending portion 711, a first rod-shaped portion 712, a second rod-shaped portion 713, and a curved portion 714 connecting the first rod-shaped portion 712 and the second rod-shaped portion 713.
• the bending portion 711 is bent in a direction perpendicular to the longitudinal direction of the gripping portion 71 toward the opposite side to the second rod-shaped portion 713.
• the first rod-shaped portion 712 extends linearly from the bending portion 711 to the curved portion 714.
• the second rod-shaped portion 713 extends linearly from the curved portion 714 to the frame portion 72.
• the curved portion 714 connects the base end of the first rod-shaped portion 712 to the base end of the second rod-shaped portion 713.
• the first rod-shaped portion 712 and the second rod-shaped portion 713 are arranged parallel to each other, and their own width and the distance between them corresponds to the width W2 of the gripping portion 71.
• the width W2 of the gripping portion 71 is not particularly limited and is, for example, 1 cm to 5 cm.
• the length along the longitudinal direction of the gripping portion 71 is not particularly limited and is, for example, 5 cm to 10 cm.
• the configuration of the gripping portion 71 is not limited to the shapes, materials, etc. described above.
• the gripping portion 71 may be made of a wooden rod-shaped member.
• the filter holder 7 may be configured to have a wooden gripping portion 71 and a metal frame-shaped portion 72.
• the frame-shaped portion 72 has a circular ring shape in a plan view. Specifically, the frame-shaped portion 72 extends in a circular ring shape from the second rod-shaped portion 713 to the bent portion 711.
• the inner and outer diameters of the frame-shaped portion 72 are not particularly limited and can be set according to the size of the filter 1.
• the inner diameter of the frame-shaped portion 72 is 6 cm to 15 cm, and preferably 9 cm to 13 cm.
• the shape of the frame-shaped portion 72 in a plan view is not particularly limited and may be an ellipse, semicircle, polygon, etc.
• the material of the frame-shaped portion 72 may be the same as or different from the material of the grip portion 71.
• the tip 721 of the frame-shaped portion 72 is in contact with the bent portion 711 so as to be separable.
• a conventional cloth filter for example, the wire insertion portion of Patent Document 2
• the filter 1 of this embodiment does not require insertion into the frame-shaped portion 72.
• the tip 721 and the bent portion 711 may be fixed.
• the grip portion 71 and the frame-shaped portion 72 may be molded as a single unit.
• Filter Fig. 3 is a perspective view showing the filter according to the first embodiment of the present invention.
• Fig. 4 is a top view showing the filter according to the first embodiment of the present invention.
• Fig. 5 is a side view showing the filter according to the first embodiment of the present invention.
• the filter 1 of this embodiment is conical.
• the shape of the filter 1 is not limited to this.
• the filter 1 may be trapezoidal, truncated cone-shaped, pyramidal, hemispherical, etc.
• the filter 1 may also be used as a beverage extraction filter or a cooking filter. It is preferable that the filter 1 is a beverage extraction filter, and in particular a coffee extraction filter.
• the filter 1 may be applied to a coffee extraction device.
• the filter 1 may be attached to a coffee maker that can control the extraction temperature.
• the filter 1 includes a filtering section 2 having an insertion section 3, an engagement section 4, and an auxiliary section 5.
• the filtration unit 2 constitutes the main body of the filter 1.
• the filtration unit 2 has a function of accommodating a filtering object (e.g., coffee grounds) and filtering the object to obtain an extract (e.g., a liquid containing coffee components).
• the filtration unit 2 is composed of at least one base material.
• the base material of the filtration unit 2 is composed of a fibrous member (e.g., cloth, paper, flannel fabric), but is not limited thereto.
• the filtration unit 2 may be composed of a metal member, a polymer material, a rubber material, or the like.
• the filtration unit 2 is composed of a fibrous member.
• the fibrous member includes natural fibers and chemical fibers, but is preferably natural fibers (e.g., plant fibers such as cotton and hemp).
• the filter section 2 has cloth pieces 2a and 2b, a first sewn portion 21, a second sewn portion 22, an upper opening 23, and a connection portion 24 that connects cloth pieces 2a and 2b.
• the filter section 2 is composed of one base material (one piece of cloth). Specifically, this base material is molded so that the cloth pieces 2a and 2b are provided symmetrically with respect to the connection portion 24, which is approximately fan-shaped or triangular. That is, as shown in Figure 3, the connection portion 24 is configured as an axis member of the base material that is symmetrical with respect to the axis so as to connect the upper left end of cloth piece 2a and the upper right end of cloth piece 2b to each other.
• the first sewn portion 21 and the second sewn portion 22 are formed by overlapping and sewing both sides of the cloth pieces 2a and 2b of the base material thus formed.
• the filtering section 2 does not have to have the connection section 24, but it is preferable that the filtering section 2 has the connection section 24 in order to provide the insertion section 3, which will be described later, so as to avoid the first sewn section 21. This makes it easier to form the insertion section 3.
• the insertion section 3 can be formed before the first sewn section 21 and the second sewn section 22 are formed.
• the first sewn portion 21 is provided so as to extend from the lower end of the filtration portion 2 to the connection portion 24 (halfway up the height of the filter 1).
• the first sewn portion 21 may be provided so as to extend from the lower end of the filtration portion 2 to the insertion portion 3.
• the second sewn portion 22 is provided so as to extend from the lower end to the upper end of the filtration portion 2 (across the height of the filter 1) as shown in FIG. 1 and FIG. 3.
• the filtration section 2 is bag-shaped in the open state. From this state, the engagement section 4 provided at the upper end of the filtration section 2 is folded back as shown in FIG. 1, so that the filtration section 2 is configured to have an upper opening 23.
• the shape and dimensions of the upper opening 23 preferably correspond to the shape and dimensions of the frame-shaped section 72. For example, if the shape of the frame-shaped section 72 in a plan view is rectangular, the shape of the upper opening 23 in a plan view is also preferably rectangular.
• the inner diameter of the upper opening 23 is preferably set slightly larger than the outer diameter of the frame-shaped section 72. This allows the engagement section 4, which will be described later, to reliably engage with the frame-shaped section 72.
• the shape and dimensions of the upper opening 23 may be the same as the shape and dimensions of the frame-shaped section 72. This allows the above-mentioned effects to be exerted more effectively.
• the engagement portion 4 is provided at the upper end of the filtration portion 2 and is configured to engage with the frame-shaped portion 72. This makes it easier to attach and detach the filter 1 to and from the filter holder 7, compared to a conventional fabric filter in which the frame-shaped portion 72 must be inserted into the upper end of the filter.
• the engagement portion 4 in this embodiment is provided along the upper end of the filtration portion 2. This allows for more reliable engagement with the frame-shaped portion 72.
• the filtration portion 2 and the engagement portion 4 are integrally formed. That is, the engagement portion 4 is made of the base material of the filtration portion 2.
• the engagement portion 4 is formed in an annular belt shape so as to have an upper peripheral edge corresponding to the upper end of the filter 1 and a lower peripheral edge corresponding to the upper end of the filtration portion 2 and having a smaller inner diameter than the upper peripheral edge. This allows the engagement portion 4 to be easily folded back along the frame-shaped portion 72. From this perspective, the width (height) of the engagement portion 4 is preferably about 1 cm to 2 cm, but is not limited thereto.
• the engagement portion 4 can be folded back to engage with the frame portion 72.
• the fold 41 corresponds to the lower periphery of the engagement portion 4.
• the engagement portion 4 has a simple configuration.
• the configuration of the engagement portion 4 is not particularly limited as long as it can perform the function of engaging with the frame-shaped portion 72.
• the filtration portion 2 and the engagement portion 4 may be separate bodies.
• the insertion portion 3 has a function (first function) of inserting the grip portion 71.
• the insertion portion 3 in this embodiment is formed by cutting out a part of the base material constituting the filtering portion 2 (the connection portion 24 in this embodiment). That is, in this embodiment, the insertion portion 3 is a notch. Since the notch is open before the grip portion 71 is inserted, the grip portion 71 can be easily inserted into the insertion portion 3. As a result, the filter 1 can be easily attached and detached from the filter holder 7. It is preferable that the notch has a sewn edge. This can improve the strength of the insertion portion 3. As a result, the above-mentioned effect can be exerted more continuously.
• the insertion portion 3 of this embodiment is provided on the side of the upper opening 23 in the filtration section 2. This allows the above-mentioned effect of the insertion portion 3 to be exerted without interfering with the function of the filtration section 2.
• such an insertion portion 3 is configured to be aligned with the lower periphery of the engagement portion 4 in a side view of the filter 1.
• the insertion portion 3 is configured to be aligned parallel to the lower periphery of the engagement portion 4 along the left-right (horizontal) direction, or aligned on the same straight line. This allows the insertion portion 3 to function as a starting point for folding back the engagement portion 4, as described later (second function).
• the insertion portion 3 also functions as a starting point for defining the upper opening 23 of the filtration section 2 (third function).
• the insertion portion 3 has a main function (first function) of inserting the grip portion 71, as well as multiple sub-functions (second and third functions). This allows a filter 1 to be provided that is simple in configuration and easy to use.
• the insertion portion 3 is provided to extend along the circumferential direction of the filtering portion 2 at the connection portion 24 of the filtering portion 2. This allows the filter 1 to be moved while gripping the first sewn portion 21 when inserting the gripping portion 71 into the insertion portion 3. Conversely, when removing the filter 1 from the filter holder 7, the filter 1 can be moved while gripping the second sewn portion 22. This makes it easier to attach and detach the filter 1 to and from the filter holder 7. This effect is more pronounced when the insertion portion 3 is provided near the gap between the pieces of fabric 2a, 2b (near the connection portion 24).
• the insertion portion 3 is arranged to intersect (preferably perpendicular to) the center line (vertical two-dot chain line in FIG. 5) of the filter 1, which passes through the bottom of the filter 1 (the connection point of the first sewn portion 21 and the second sewn portion 22, i.e., the apex) and the center of the top opening 23, in a side view of the filter 1.
• This allows the gripping portion 71 to be inserted into the insertion portion 3 while aligned with the center line (FIG. 6). This ensures stable attachment of the filter 1 to the filter holder 7.
• the insertion portion 3 is also arranged to intersect (preferably perpendicular to) the line along the first sewn portion 21. This arrangement also ensures stable attachment of the filter 1 to the filter holder 7.
• the center of the insertion portion 3 (the midpoint of the longitudinal length) is offset from the line along the first sewn portion 21 in the side view of FIG. 5. That is, the center of the insertion portion 3 does not coincide with the first sewn portion 21 in the side view of FIG. 5.
• the first sewn portion 21 is offset from the grip portion 71.
• the first sewn portion 21 is located on the back side of the page.
• the insertion portion 3 is provided vertically below the engagement portion 4.
• the periphery of the insertion portion 3 is folded back. Therefore, the insertion portion 3 can effectively function as a starting point when the engagement portion 4 engages with the frame-shaped portion 72.
• the fold 41 of the engagement portion 4 and the insertion portion 3 are aligned along the radial direction (two-dot chain line in FIG. 9) of the upper surface opening 23 passing through the insertion portion 3 (FIG. 9).
• the portion from the fold 41 to the vicinity of the upper end of the filtration portion 2 becomes flat.
• the entire surface of the upper surface opening 23 can be effectively used.
• the expanded coffee grounds can be held over the entire surface of the substrate (the portion near the upper end of the filtration portion 2) and the upper surface opening 23.
• the fold 41 of the engagement portion 4 and the insertion portion 3 may be aligned vertically. In this case as well, the above-mentioned effects can be achieved.
• the insertion portion 3 is provided along the circumferential direction of the filtering portion 2. This allows the above-mentioned effect resulting from the alignment of the engagement portion 4 with the fold 41 to be more effectively exerted.
• the width W1 of the insertion portion 3 is not particularly limited, but is preferably set to correspond to the width W2 of the grip portion 71. This allows the filter 1 to be attached from the grip portion 71 to the frame portion 72 via the insertion portion 3.
• the width W1 of the insertion portion 3 is the length of the insertion portion 3 in the longitudinal direction.
• the width W1 is preferably 1 cm to 5 cm, more preferably 1 cm to 3 cm, and particularly preferably 11 mm to 24 mm.
• the contact area between the filter 1 and the filter holder 7 is reduced when the filter 1 is attached to or detached from the filter holder 7. As a result, the filter 1 can be attached to or detached from the filter holder 7 more smoothly.
• the configuration of the insertion portion 3 is not limited to the above-mentioned configuration.
• the insertion portion 3 may be configured so that the grip portion 71 can be inserted therethrough.
• the insertion portion 3 may be a through hole formed in a circular or polygonal shape.
• the position of the insertion portion 3 is also not particularly limited.
• the insertion portion 3 may be provided between the first sewn portion 21 and the second sewn portion 22.
• the filter 1 may have the insertion portion 3 as a replacement for or in addition to the conventional component (wire insertion portion) that inserts the frame portion 72 into the filter 1.
• the filter 1 has an auxiliary portion 5 that assists engagement of the engaging portion 4 with the frame-shaped portion 72. This makes it possible to ensure the engaging force of the engaging portion 4 with the frame-shaped portion 72 while keeping the configuration of the engaging portion 4 simple.
• the auxiliary part 5 of this embodiment has a fixing member 51 having a function of fixing the engagement part 4 to the frame-shaped part 72, and a retaining member 52 having a function of maintaining such fixation.
• the fixing member 51 is a string member, but is not limited to this.
• the auxiliary part 5 has a loop member 511 for passing the fixing member 51, but is not limited to this. When the engagement part 4 is not folded back, the loop member 511 is sewn to the inside of the engagement part 4 (FIG. 4).
• the fixing member 51 is movable inside the loop member 511.
• the retaining member 52 is a claw metal fitting that can adjust the state in which the engagement part 4 is held to the frame-shaped part 72, but is not limited to this.
• the retaining member 52 is slidably provided on the fixing member 51.
• the configuration (shape, material, etc.) of the auxiliary part 5 is not limited to the above-mentioned configuration.
• the fixing member 51 may be a metal wire or a resin material.
• the holding member 52 may be made of plastic.
• the auxiliary part 5 may be made of a clip member.
• the entire auxiliary part 5 may be made of a fabric made of a stretch material.
• the member made of the fabric made of the stretch material may be additionally provided on the upper side (e.g., the upper end) of the filter 1, or may be provided as a substitute for a member on the filter 1 above the insertion part 3.
• the position of the auxiliary part 5 is not particularly limited, but it is preferably positioned so as not to interfere with the insertion part 3.
• the position of the auxiliary part 5 may be set taking into consideration the dominant hand of the user.
• FIGS 6 to 8 are perspective views showing an example of a method of attaching the filter to the filter holder in the filtering tool set according to the first embodiment of the present invention.
• Figures 9 and 10 are views for explaining the function of the auxiliary part of the filter in the filtering tool set according to the first embodiment of the present invention.
• the base end of the gripping portion 71 is inserted into the insertion portion 3.
• the filter 1 is rotated so that the filtration portion 2 passes inside the frame-shaped portion 72 (FIG. 7). This rotation is performed so that the insertion portion 3 serves as the axis of rotation.
• the timing of the rotation is not particularly limited.
• the filter 1 may be rotated when the insertion portion 3 reaches near the middle of the gripping portion 71.
• the base end of the gripping portion 71 is inserted into the insertion portion 3, the filter 1 does not have to be inverted.
• the engaging portion 4 is folded back along the frame-shaped portion 72 at the fold 41 starting from the insertion portion 3. This causes the engaging portion 4 to engage with the frame-shaped portion 72 (FIG. 8). At this time, the fold 41 of the engaging portion 4 is formed along the frame-shaped portion 72.
• the fixing member 51 is pulled downward while the holding member 52 is slid upward.
• the fixing member 51 tightens the engagement portion 4.
• the holding member 52 moves close to the engagement portion 4 and remains there, so that the fixation by the fixing member 51 can be maintained.
• the filter 1 can be removed from the filter holder 7 by reversing the procedure of the above-mentioned installation method. That is, the auxiliary part 5 is released from its fixed position, the filtering part 2 is removed from the inside of the frame part 72, and the filter 1 is separated from the filter holder 7 via the insertion part 3.
• the method of attaching and detaching the filter 1 via the gripping portion 71 is extremely simple compared to the conventional method of inserting the frame-shaped portion 72 into the upper end of the filtration section 2. This allows the user to perform maintenance on the filter 1 without stress. As a result, storing the filter 1 while it is attached to the filter holder 7 is avoided. In addition, contamination of the filter 1 caused by the growth of bacteria adhering to the gripping portion 71 during storage of the filter 1 can be prevented.
• the user can also use the filter set 10 in the state shown in FIG. 8 to implement the cloth drip method.
• the user can use the filter set 10 while pressing the fold 41 of the engagement portion 4 with the fingers on the grip portion 71 side.
• the filter 1 does not need to have the auxiliary portion 5.
• Filter Storage Method Fig. 11 is a diagram for explaining an example of a filter storage method according to the first embodiment of the present invention.
• the filter 1 is stored in the container 6 after use.
• the container 6 has a main body 61 and a lid 62.
• the main body 61 is filled with water W.
• the dimensions of the main body 61 are, for example, about 5 cm in diameter and 17 cm in height, but are not limited to these.
• the container 6 can be selected by considering only the filter 1 without considering the filter holder 7. This allows the volume and storage space of the container 6 to be dramatically reduced, making it easy to store the filter 1 in water. In particular, the storage space can be reduced by about 30% to 90% compared to a flat-laid Tupperware.
• filter 1 can be stored frozen.
• Filter 1 stored frozen requires boiling to raise the temperature of filter 1 itself, so frozen storage is more time-consuming than underwater storage.
• Filter 1 can also be sterilized by boiling after use and stored underwater. As mentioned above, filter 1 can be easily removed from filter holder 7, so maintenance such as this can be carried out smoothly.
• the above-mentioned filter 1 can be manufactured as follows. First, a piece of cloth made of flannel is prepared (preparation step). This cloth is cut into a predetermined shape to have cloth piece 2a and cloth piece 2b (cutting step). In the cutting step, this base material is molded so that cloth pieces 2a and 2b are provided symmetrically to form a line-symmetric shape with respect to connection portion 24 (see FIG. 3).
• the insertion portion 3 is formed in the connection portion 24.
• the cloth pieces 2a and 2b are overlapped, and both ends of the cloth pieces 2a and 2b are sewn together to form the first sewn portion 21 and the second sewn portion 22, thereby forming the filtering portion 2 (filtering portion forming process).
• the upper ends of the cloth pieces 2a and 2b are subjected to anti-fraying treatment to form the engaging portion 4 (engaging portion forming process).
• the anti-fraying treatment includes, for example, sewing such as overlocking, laser processing, etc., but is not limited to these.
• a loop member 511 is provided inside the engaging portion 4, and the fixing member 51 (string member) is passed through the loop member 511 (fixing member forming process).
• the holding member 52 (claw metal fitting) is attached to the fixing member 51 (holding member forming process).
• the fixing member forming process and the holding member forming process are auxiliary portion forming processes. In this manner, the filter 1 can be manufactured.
• the manufacturing method of the filter 1 is not limited to the above-mentioned manufacturing method.
• the number of cloth pieces is not particularly limited. That is, the filtration section 2 may be composed of multiple cloth pieces (for example, four cloth pieces). The filtration section 2 may or may not have a connection section 24.
• the order of the above-mentioned steps may be changed as appropriate, and some steps may be omitted.
• the cloth pieces 2a and 2b may be separated.
• FIG. 12 is a schematic diagram showing a filter according to a second embodiment of the present invention.
• the second embodiment will be described below, focusing on the differences from the first embodiment described above, and omitting a description of similar points. Note that the same reference numerals are used to designate the same components as in the first embodiment described above.
• the filter 1A of this embodiment differs from the filter 1 of the first embodiment in that the configuration of the insertion portion and the auxiliary portion is different.
• the insertion portion 3A of this embodiment is formed by cutting the connection portion 24. That is, the insertion portion 3A is a cut. This cut is closed when the filter 1A is in an unused state, and is configured to open when the grip portion 71 is inserted. That is, since the insertion portion 3A is closed before the grip portion 71 is inserted, it can also be used as a filter for brewing coffee without using a filter holder 7. In addition, since there is no need to penetrate the insertion portion 3, the filter 1 can be manufactured more easily.
• the center of the insertion portion 3A coincides with the first sewn portion 21 in a front view.
• the first sewn portion 21 functions as a mark indicating the center of the insertion portion 3A.
• the grip portion 71 can be easily inserted into the insertion portion 3 that is closed before insertion.
• the auxiliary part 5A of this embodiment is composed of a resin ring.
• Materials for the resin ring include silicon, urethane, polyethylene terephthalate, etc.
• the material for the resin ring is preferably silicon.
• the elastic force of the resin ring can efficiently fix and hold the engagement part 4 to the frame-shaped part 72.
• the auxiliary part 5A is fixed by sewing to the outside of the engagement part 4, but it may be separable from the engagement part 4.
• the auxiliary part 5A has the function of the fixing member 51 and the function of the holding member 52.
• the auxiliary part 5A can be said to be a member that imparts an engagement force to the engagement part 4.
• the filter 1A of this embodiment also has the same effect as the filter 1 of the first embodiment.
• the filter and filtering tool set of the present invention have been described above based on preferred embodiments, but the present invention is not limited to these embodiments.
• the configuration of each part can be modified or replaced with any configuration having a similar function. Any other means or components may be added to the present invention.
• any two or more configurations (features) of each embodiment may be combined.
• the filter 1 may be configured with a filtering section 2 having a notch as the insertion section 3, without the auxiliary section 5.
• a cover member may be provided on the insertion section 3.
• the insertion section 3 may be provided on a section other than the filtering section 2 (for example, the engagement section 4).
• the material of each section is not particularly limited as long as it can properly perform its function.
• each section may be formed from a material that complies with the Food Sanitation Act.
• the filter of the present invention is removably attached to a filter holder that includes a gripping portion and a frame-shaped portion attached to the gripping portion.
• the filter has an upper opening and includes a filtration portion made of at least one base material.
• the filtration portion is characterized by having an insertion portion through which the gripping portion can be inserted. This makes it possible to provide a filter that is easily attached to and detached from a filter holder, and a filter set including such a filter.
• the present invention has industrial applicability.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Food-Manufacturing Devices (AREA)
• Farming Of Fish And Shellfish (AREA)
• Apparatus For Making Beverages (AREA)

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• 2023
  • 2023-08-24 JP JP2023571668A patent/JPWO2025041349A1/ja active Pending
  • 2023-08-24 WO PCT/JP2023/030602 patent/WO2025041349A1/ja active Application Filing
• 2024
  • 2024-07-29 TW TW113128156A patent/TW202515469A/zh unknown

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