Patent Publication Number: US-2023148783-A1

Title: Coffee filter cup

Description:
TECHNICAL FIELD 
     The present disclosure relates to the field of pour-over coffee, and more particularly to a coffee filter cup. 
     BACKGROUND 
     With the improvement of the quality of life, pour-over coffee has become a high-end drink favored by more and more people. When making pour-over coffee, a filter cup is generally required. The filter cup is disposed on a coffee pot or a coffee cup, a piece of filter paper is laid in the filter cup, and the filter paper is supported by the filter cup. Coffee powder is poured into the filter cup, hot water is added for brewing and extraction, and the prepared coffee is filtered by the filter paper and flows into the coffee pot or the coffee cup for coffee lovers to drink. 
     Common filter cups for pour-over coffee include V60 filter cups, cake filter cups (also referred to as Kalita wave dripper), etc. The filter paper for pour-over coffee includes conical filter paper and cake filter paper (also referred to as Kalita wave filter paper). The conical filter paper is laid in a quarter circle shape, its opening angle is 60 degrees, and the conical filter paper is used together with the V60 filter cup. A bottom of the cake filter paper is flat, the cake filter paper is surrounded by wavy folds, corresponding to use with the cake filter cup. Under filtration of different filter paper, the degree of coffee extraction is different, and the taste and flavor are also different. 
     In view of the above related art, the inventor believes that in order to taste pour-over coffee with different extraction flavors, coffee lovers need to have both the V60 filter cup and the cake filter paper to support different filter papers to make pour-over coffee, which not only occupies the space for placing utensils, but also is inconvenient to carry out. 
     SUMMARY 
     The present disclosure provides a coffee filter cup, in order to enable coffee lovers to make pour-over coffee with different extraction flavors by using one filter cup matched with the conical filter paper and the cake filter paper. 
     The coffee filter cup provided by the present disclosure adopts the following technical solutions. 
     A coffee filter cup includes: a base and a foldable cup body, wherein the foldable cup body is disposed on the base, the base is provided with a mounting hole for the foldable cup body to penetrate through, and a bottom of the foldable cup body is provided with a discharge opening; the foldable cup body includes an upper cup body and a lower cup body which are sequentially connected; a first crease groove is provided on a connection position between the lower cup body and the upper cup body, the first crease groove extends along a circumferential direction of the lower cup body, and the lower cup body is capable of being folded towards an inside of the upper cup body through the first creases groove to form a support table. 
     By adopting the above technical solution, the foldable cup body is disposed on the base, and the base plays a role in supporting the foldable cup body; the discharge opening is suitable for discharge coffee liquid brewed and extracted in the foldable cup body into a container such as a coffee pot or a coffee cup; the upper cup body and the lower cup body are sequentially connected, and are suitable for placing the conical filter paper to extract coffee; the first crease groove is arranged to ensure that a thickness of the connection position between the lower cup body and the upper cup body is less than a thickness of the foldable cup body at two opposite sides outside the first crease groove, so that the deformation resistance of the foldable cup body at the first crease groove is less than the deformation resistance of the foldable cup body at two opposite sides outside the first crease groove, and the lower cup body can be conveniently folded from the first creasing groove into the upper cup body; the lower cup body is folded into the upper cup body to form the support table in the upper cup body, and the support table plays a role in supporting the flat bottom of the cake filter paper, which is suitable for putting the cake filter paper to extract coffee. 
     Therefore, when the coffee filter cup is unfolded, the conical filter paper is suitable for being put into the coffee filter cup to extract and filter coffee, and when the lower cup body of the coffee filter cup is folded inwards to form the support table, the cake filter paper is suitable for being put into the cake filter cup to extract and filter coffee, so that the effect that pour-over coffee with different extraction flavors are made by only using one kind of coffee filter cup in combination with the conical filter paper and the cake filter paper is realized. 
     Preferably, the upper cup body is provided with a protruding ring, and the protruding ring passes through the mounting hole and is positioned at the bottom of the base. 
     By adopting the above technical solution, the protruding ring passes through the mounting hole and is limited at the bottom of the base, so that the foldable cup body is snapped and fastened with the base, and the foldable cup body is not easy to fall off from the base. 
     Preferably, a bottom of the upper cup body and/or a top of the lower cup body are/is provided with at least one liquid drainage hole. 
     By adopting the above technical solution, the liquid drainage hole is suitable for discharging the coffee accumulated between the support table and the inner wall of the upper cup body when the lower cup body is folded upwards, thereby reducing the influence of the accumulated coffee on the coffee taste. 
     Preferably, the upper cup body is provided with at least two second crease grooves, and each of the at least two second crease grooves extends along a circumferential direction of the upper cup body. 
     By adopting the above technical solution, the second crease groove is defined to enable a thickness of the upper cup body at the second crease groove to be less than that of the upper cup body at two opposite sides outside the second creases groove, so that the deformation resistance of the foldable cup body at the second crease groove is smaller than that of the upper cup body at two opposite sides outside the second crease groove, and the upper cup body can be conveniently folded from the second crease groove to the inside or outside of the upper cup body, thus the upper cup body can be folded and contracted, which is convenient for users to carry. 
     Preferably, an inner wall of the foldable cup body is provided with a plurality of ribs at intervals. 
     By adopting the above technical solution, the arrangement of the ribs is favorable for guiding hot water for brewing, and the ribs support the filter paper, so that a gap is defined between the filter paper and the inner wall of the foldable cup body, and gas in the coffee powder is conveniently discharged. 
     Preferably, a top of the upper cup body is provided with a reinforcing ring. 
     By adopting the above technical solution, the reinforcing ring is beneficial to maintaining a relatively stable cup body shape when the foldable cup body is unfolded, and the probability of spilling hot water or coffee liquid caused by excessive deformation of the foldable cup body is reduced. 
     Preferably, a bottom surface of the base is uniformly provided with at least two limiting blocks, and the limiting blocks are configured (i.e., structured and arranged) to be inserted into a coffee pot and/or a coffee cup. 
     By adopting the above technical solution, the limiting blocks are insert into the coffee pot and/or the coffee cup to limit the base, and the base is not easy to slide out of the coffee pot and/or the coffee cup to cause the coffee liquid in the foldable cup body to spill. 
     Preferably, the base includes a positioning ring, a support ring and a plurality of connecting strips; the support ring is disposed on an inside of the positioning ring; the connecting strips are arranged at intervals and connected between the support ring and the positioning ring; and the positioning ring is positioned at an opening of the coffee pot and/or an opening of the coffee cup; the mounting hole is provided on the support ring, and the limiting blocks are disposed on the bottoms of the connecting strips. 
     by adopting the above technical solution, the opening of the coffee pot and/or the opening of the coffee cup support the positioning ring, the connecting strips are arranged at interval and connected between the support ring and the positioning ring, and the positioning ring supports the support ring through the connecting strips; the support ring supports the foldable cup body in a snap-fitting manner through the mounting hole; and the limiting blocks are arranged at the bottoms of the connecting strips, and the base is limited by limiting the connecting strips. 
     Preferably, a connection position between the connecting strip and the support ring is located above a connection position between the connecting strip and the positioning ring. 
     By adopting the above technical solution, the support ring is disposed at the inside of the positioning ring, the connection position between the connecting strip and the support ring is disposed at the inside of the connection position between the connecting strip and the positioning ring, and the connecting strip is obliquely arranged between the support ring and the positioning ring; when the upper cup body is folded outward along the second crease groove, the outside wall of the upper cup body is attached to the upper side wall of the connecting strip, so that the coffee filter cup can be conveniently folded and accommodated, and meanwhile, the upper cup body can be continuously folded and accommodated along another second crease groove. 
     Preferably, the base is provided with a handle. 
     By adopting the above technical solution, when the pour-over coffee is extract, coffee liquid or condensed water is inevitably adhered to the base or the foldable cup body, and the arrangement of the handle enables coffee lovers to take and put the coffee filter cup on the coffee pot and/or the coffee cup more conveniently, cleanly and hygienically. 
     In summary, the present disclosure includes at least one of the following beneficial technical effects: 
     1. The lower cup body of the present disclosure is suitable for being folded into the upper cup body along the first crease groove, and the support table is formed in the upper cup body and can support the flat bottom of the cake filter paper, which is convenient for coffee lovers to use; 
     2. The upper cup body of the present disclosure can be folded towards the inside or the outside of the upper cup body through the second crease groove, thereby reducing the space occupied by the storage of the coffee filter cup and being convenient for coffee lovers to carry when going out; 
     3. The upper side wall of the connecting strip of the present disclosure is an inclined surface, and when the upper cup body is folded outwards through the second crease groove, the outside wall of the upper cup body is attached to the upper side wall of the connecting strip, thereby facilitating the folding and storage of the coffee filter cup. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is an overall schematic diagram according to embodiments of the present disclosure. 
         FIG.  2    is a schematic diagram of unfolding a foldable cup body according to embodiments of the present disclosure. 
         FIG.  3    is a schematic diagram of a lower cup body after being folded of a first embodiment according to embodiments of the present disclosure. 
         FIG.  4    is a schematic diagram of an upper cup body after being folded according to embodiments of the present disclosure. 
         FIG.  5    is a schematic diagram of a base according to embodiments of the present disclosure. 
         FIG.  6    is a schematic diagram of a coffee filter cup after being folded according to embodiments of the present disclosure. 
         FIG.  7    is a schematic diagram of unfolding a foldable cup body of a second embodiment according to embodiments of the present disclosure. 
         FIG.  8    is a schematic diagram of a lower cup body after being folded of the second embodiment according to embodiments of the present disclosure. 
         FIG.  9    is a schematic diagram of mounting a handle of a third embodiment according to embodiments of the present disclosure. 
         FIG.  10    is a schematic diagram of ribs with spiral shapes according to embodiments of the present disclosure. 
     
    
    
     Description of reference numerals: 
       1  - base;  11  - positioning ring;  12  - support ring.  121  - mounting hole;  13  -connecting strip;  131  - limiting block;  132  - guide surface;  14  - handle;  2  - foldable cup body;  21  - upper cup body;  211  - feed opening;  212  - second crease groove;  213  - first upper cup ring;  214  - second upper cup ring;  215  - third upper cup ring;  216  - reinforcing ring;  22  - lower cup body;  221  - discharge opening;  222  - first crease groove;  223  - support table;  224  - protruding ring;  225  - liquid accumulation groove;  226  - liquid drainage hole;  227  - support piece;  23  - rib. 
     DETAILED DESCRIPTION OF EMBODIMENTS 
     In order to make purposes, technical solutions, and advantages of the present disclosure clearer, the present disclosure is further described in detail below with reference to  FIGS.  1 - 9    and the embodiments. The attached drawings of the present disclosure is provided with a coordinate axis z, where a forward direction of the z axis represents a top, and a reverse direction of the z axis represents a bottom. 
     An embodiment of the present disclosure discloses a coffee filter cup. Referring to  FIG.  1   , a base  1  and a foldable cup body  2  are included. 
     The base  1  is provided with a mounting hole  121 , the foldable cup body  2  is adapted to penetrate through the mounting hole  121 , so that the foldable cup body  2  is connected to the base  1 , and the base  1  plays a role in supporting the foldable cup body  2 . The foldable cup body  2  can be integrally formed with the base  1  by means of injection molding, or the foldable cup body  2  can be directly inserted into the mounting hole  121  of the base  1  for fixation, or the foldable cup body  2  can be further fixed to the base  1  by a snap-fitting manner. In this embodiment, after the foldable cup body  2  penetrates through the mounting hole  121 , the foldable cup body  2  is snapped with the base  1 , so that the base  1  and the foldable cup body  2  can be relatively fixed during use, a better supporting effect is provided for filter paper, and the base  1  and the foldable cup body  2  can be split during cleaning or storage, so that the coffee filter cup is convenient to clean and store. 
     The base  1  is made of a rigid material such as plastic, stainless steel or ceramic, or the base is made of a flexible material made of a hard material such as rubber and silicone. In the embodiment, the base is specifically made of plastic to reduce the overall weight of the coffee filter cup, which is convenient for a user to carry out. Since the foldable cup body  2  needs to be folded, the foldable cup body  2  can be made of non-toxic and high-temperature-resistant flexible elastic material such as silicone, latex and the like, and the foldable cup body  2  is specifically made of the silicone, so that the foldable cup body  2  has a certain hardness so as to maintain the shape of the foldable cup body  2  conveniently, thereby facilitating containing hot water to achieve extraction of coffee. 
     Referring to  FIG.  2   , the foldable cup body  2  is a cylinder body which runs through from top to bottom, cross sectional areas of the foldable cup body  2  are gradually reduced from top to bottom, an appearance of the foldable cup body  2  is in an inverted round table shape, and the foldable cup body  2  is suitable for placing the conical filter paper. The foldable cup body  2  includes an upper cup body  21  and a lower cup body  22  which are integrally formed, and the lower cup body  22  is adapted to form a support table  223  inside the upper cup body  21  by folding, so as to support the cake filter paper with the flat bottom. A top opening of the upper cup body  21  defines a feed opening  211  of the foldable cup body  2 , which facilitates the sequential addition of the coffee powder and hot water for coffee extraction after the filter paper is placed. A bottom opening of the lower cup body  22  defines a discharge opening  221  of the foldable cup body  2 , and coffee liquid extracted from the foldable cup body  2  is discharged into the coffee pot or the coffee cup through the discharge opening  221 . 
     Referring to  FIG.  2    and  FIG.  3   , a first embodiment of the present disclosure is that: a first crease groove  222  is provided at a connection position between the lower cup body  22  and the upper cup body  21  along a circumferential direction of the lower cup body  22 , and the first crease groove  222  may be composed of a plurality of spaced arc-shaped grooves, or may be a complete annular groove. In the embodiment, the first crease groove  222  is specifically shown in the annular groove structure. A wall thickness of the foldable cup body  2  at the first crease groove  222  is smaller than a wall thickness of the foldable cup body  2  at two opposite sides outside the first crease groove  222 , so that the anti-deformation capability (i.e., deformation resistance) of the foldable cup body  2  at the first crease groove  222  is smaller than the anti-deformation capability of the foldable cup body  2  at the two opposite sides outside the first crease groove  222 , and when the lower cup body  22  is folded, the first crease groove  222  is deformed at first, the lower cup body  22  is easily folded into the upper cup body  21  from the first crease groove  222  and forms a support table  223  for supporting the cake filter paper with the flat bottom, at this time, the discharge opening  221  is located below the cake filter paper, and the extracted coffee liquid is discharged from the discharge opening  221  into the coffee pot or the coffee cup. Here, the first crease groove  222  may be disposed on an outside of the connection position between the lower cup body  22  and the upper cup body  21 , or may be disposed on the inside of the connection position between the lower cup body  22  and the upper cup body  21 . In this embodiment, the first crease groove  222  is disposed on the outside of the connection position between the lower cup body  22  and the upper cup body  21  to facilitate cleaning. 
     In addition, a protruding ring  224  is provided on the outside wall of the bottom of the upper cup body  21 , and when the foldable cup body  2  is snapped with the base  1 , the protruding ring  224  passes through the mounting hole  121  and is limited to the bottom of the base  1 , so that the foldable cup body  2  is fastened to the base  1 , and the foldable cup body  2  is not easily disengaged from the base  1 . The protruding ring  224  may be integrally formed with the foldable cup body  2 , may be bonded with the foldable cup body  2 , or may be hot-melted with the foldable cup body  2 . In the embodiment, the protruding ring  224  is specifically integrated with the foldable cup body  2  to reduce toxicological hazards caused by adhesive use. 
     After the lower cup body  22  is folded in the upper cup body  21 , a liquid accumulation groove  225  is defined between the lower cup body  22  and the upper cup body  21 , so that at least one liquid drainage hole  226  can be defined in the upper cup body  21  and/or the lower cup body  22  located at the liquid accumulation groove  225 , so that residual coffee accumulated in the liquid accumulation groove  225  can be discharged from the liquid drainage hole  226 , and the sanitation problem and the taste influence caused by residual coffee in the liquid accumulation groove  225  are reduced. In the embodiment of the present disclosure, the liquid drainage hole  226  may be specifically disposed at the bottom of the upper cup body  21  and/or the top of the lower cup body  22 , and the number of the liquid drainage hole  226  may be adjusted according to requirements. In the drawings of the embodiment, three of the liquid drainage holes  226  are uniformly provided at the top of the lower cup body  22 . 
     Referring to  FIG.  4   , the upper cup body  21  is provided with at least two second crease grooves  212  extending along a circumferential direction of the upper cup body  21 , the second crease groove  212  may be formed by a plurality of spaced arc-shaped grooves, or may be a complete annular groove. In the embodiment, the second crease groove  212  is specifically shown in the annular groove structure. The second crease groove  212  is disposed on the outside of the upper cup body  21  or is disposed on the inside of the upper cup body  21 , and the second crease groove  212  in this embodiment is formed on the outside of the upper cup body  21  to facilitate cleaning. Due to setting the second crease groove  212 , a thickness of the upper cup body  21  at the second crease groove  212  is smaller than that of the upper cup body  21  at two opposite sides outside the second crease groove  212 , so that the anti-deformation capability of the upper cup body  21  at the second crease groove  212  is smaller than that of the upper cup body  21  at two opposite sides outside the second crease groove  212 ; when the upper cup body  21  is folded, a portion of the upper cup body  21  at the second crease groove  212  is bent and deformed prior to a portion of the upper cup body  21  outside the second crease groove  212 , so that the upper cup body  21  is convenient to be folded along the second crease groove  212 . 
     The number of the second crease grooves  212  in this embodiment is at least two, so that the upper cup body  21  can be folded for at least two times to facilitate storage, but the actual number of the second crease grooves  212  can be set according to the size of the upper cup body  21 . The two second crease grooves  212  are sequentially arranged up and down on the side wall of the upper cup body  21  to divide the upper cup body  21  into a first upper cup ring  213 , a second upper cup ring  214  and a third upper cup ring  215  which are sequentially connected from top to bottom. When the coffee filter cup needs to be folded, the user folds the second upper cup ring  214  outward by taking the second crease groove  212  at a lower portion of the upper cup body  21  as a folding line, and folds the first upper cup ring  213  inward by taking the second crease groove  212  at a upper portion of the upper cup body  21  as another folding line, so that the first upper cup ring  213 , the second upper cup ring  214  and the third upper cup ring  215  are sequentially sleeved from outside to inside, thereby completing the folding and contraction of the upper cup body  21 , saving the occupied space, and facilitating the user to carry. After the second upper cup ring  214  is folded, the second upper cup ring  214  is attached to the base  1 , and the first upper cup ring  213  can also be attached to the surface of the base  1 , thereby reducing the space commonly occupied by the base  1  and the coffee filter cup, and facilitating the user to carry. 
     In addition, in some embodiments, a plurality of ribs  23  are disposed on the inner wall of the foldable cup body  2  at intervals, and the ribs  23  extend from top to bottom on the inner wall of the foldable cup body  2 , which can not only drain the injected hot water, but also support the filter paper on the inner wall of the foldable cup body  2 , so as to facilitate the discharge of gas when extracting coffee. The ribs  23  can be integrally formed with the foldable cup body  2 , can be connected to the inside of the foldable cup body  2  in a hot melting manner, or can be adhered to the inside of the foldable cup body  2 . In order to reduce the trouble of multiple times of mold opening, in this embodiment, the ribs  23  and the foldable cup body  2  are integrally formed. In addition, the shape of the rib  23  is diversified, which may be linear or spiral. In an embodiment, as shown in  FIG.  8   , the rib  23  is specifically shown in the linear shape. In another embodiment, as shown in  FIG.  10   , the rib  23  is shown in the spiral shape; Moreover, the numbers of the ribs  23  corresponding to different positions of the foldable cup body  2  are different, in some embodiments, as shown in  FIG.  10   , the number of ribs  23  corresponding to the first upper cup ring  213  is greater than that of ribs  23  corresponding to the second upper cup ring  214  and the third upper cup ring  215 ; for example, the rib  23  is spiral, the number of ribs  23  corresponding to the first upper cup ring  211  is  24 , the number of ribs  23  corresponding to the second upper cup ring  214  and the third upper cup ring  215  is  12 . 
     The top of the upper cup body  21  is further connected with a reinforcing ring  216 , a thickness of the reinforcing ring  216  is larger than the wall thickness of other portions of the foldable cup body  2 , the relatively stable cup body shape is maintained when the foldable cup body  2  is unfolded, and the probability that hot water or coffee liquid is spilled due to excessive deformation of the cup body is reduced. The reinforcing ring  216  may be integrally formed with the upper cup body  21 , or may be glued to the inside or the outside of the upper cup body  21 , and in this embodiment, the reinforcing ring  216  and the upper cup body  21  are integrally formed and extend out of the outside of the upper cup body  21 . 
     Referring to  FIG.  5    and  FIG.  6   , the base  1  includes a positioning ring  11 , a support ring  12  and a plurality of connecting strips  13 . The support ring  12  is located on the inside of the positioning ring  11 , and the connecting strips  13  are spaced apart and connected between the support ring  12  and the positioning ring  11 . A size and shape of the positioning ring  11  can be adjusted according to design requirements, and specifically, the positioning ring  11  is adapted to be placed on an opening of the coffee pot and/or an opening of the coffee cup to support the coffee filter cup as a reference. 
     The mounting hole  121  is disposed on the support ring  12 , and the mounting hole  121  in this embodiment is specifically the inner circle of the support ring  12 . The foldable cup body  2  is mounted in the support ring  12  in a penetrating manner, and the protruding ring  224  abuts against the bottom of the support ring  12  to achieve snap-fitting between the support ring  12  and the foldable cup body  2 . 
     In addition, at least two limiting blocks  131  are uniformly arranged at the bottoms of the connecting strips  13 , and when the positioning ring  11  is placed on the opening of the coffee pot and/or the opening of the coffee cup, the limiting blocks  131  are inserted into the coffee pot and/or the coffee cup to limit the base  1 , so that the base  1  is not easy to slide off from the coffee pot and/or the coffee cup to cause the coffee liquid in the foldable cup body  2  to be spilled out. The limiting blocks  131  can be integrally formed with the connecting strips  13  and can also be adhered to the connecting strips  13 , and in this embodiment, the limiting blocks  131  and the connecting strips  13  are integrally manufactured to save costs such as mold opening and adhesive use. 
     The connection position between the connecting strip  13  and the support ring  12  is located above the connection position between the connecting strip  13  and the positioning ring  11 , and since the support ring  12  is located inside the positioning ring  11 , the guide surface  132  is defined on the connecting strip  13 . When the second upper cup ring  214  is folded to the outside of the second upper cup ring  214 , the outside wall of the second cup ring  214  is attached to the upper side wall of the connecting strip  13 , and the second crease groove  212  at the upper portion of the upper cup body  21  corresponds to the connection position between the connecting strip  13  and the positioning ring  11 , which is beneficial to folding and storing the coffee filter cup. At the same time, it is also beneficial for the upper cup body  21  to continue folding along another second crease groove  212 . 
     An application principle of the first embodiment of the coffee filter cup according to embodiments of the present disclosure is as follows: 
     When the coffee is extracted and filtered by using the conical filter paper, the foldable cup body  2  is snapped with the base  1 , the upper cup body  21  and the lower cup body  22  are unfolded and kept in their original shapes, the base  1  is placed on the coffee pot and/or the coffee cup, and the limiting blocks  131  are inserted into the coffee pot and/or the coffee cup. The conical filter paper is opened and placed in the foldable cup body  2  and is in contact with the inner wall of the foldable cup body  2 . The coffee powder is placed into the conical filter paper and hot water is added, and the extracted coffee liquid is discharged from the foldable cup body  2  through the discharge opening  221  and flows into the coffee pot and/or the coffee cup for coffee enthusiasts to drink; and the filtered coffee residues are left on the conical filter paper and discarded along with the conical filter paper. 
     When the cake filter paper is used for extracting and filtering coffee, the foldable cup body  2  is snapped with the base  1 , the base  1  is placed on the coffee pot and/or the coffee cup, and the limiting blocks  131  are inserted into the coffee pot and/or the coffee cup. The lower cup body  22  is folded towards the inside of the lower cup body  22  along the first crease groove  222 , so that the bottom of the lower cup body  22  forms the support table  223  in the upper cup body  21 , the cake filter paper with the flat bottom is placed in the foldable cup body  2  and is contact with the inner wall of the foldable cup body  2 , and the support table  223  supports the bottom of the cake filter paper. The coffee powder is placed into the cake filter paper and hot water is added, and the extracted coffee liquid is discharged from the foldable cup body  2  through the discharge opening  221  and the liquid drainage holes  226  and flows into the coffee pot and/or the coffee cup for coffee lovers to drink; and the filtered coffee residues are left on the cake filter paper and discarded along with the cake filter paper. 
     When the coffee filter cup needs to be folded and stored, the second upper cup ring  214  is folded towards the outside of the second upper cup ring  214  along the second crease groove  212  at the lower portion of the upper cup body  21 , the second upper cup ring  214  is attached to the upper side wall of the connecting strip  13 , and then the first upper cup ring  213  is folded towards the inside of the first upper cup ring  213  along the second crease groove  212  on the upper portion of the upper cup body  21  or the first upper cup ring  213  is attached to the surface of the positioning ring  11 , that is, the coffee filter cup is folded and stored. 
     A second embodiment of the present disclosure differs from the first embodiment in that: 
     Referring to  FIGS.  7  and  8   , the outside of the bottom of the lower cup body  22  is provided with at least one support piece  227 , and the support pieces  227  are arranged at intervals along the periphery of the lower cup body  22 . When the lower cup body  22  is folded towards the inside of the lower cup body  22  along the first crease groove  222 , the bottom of the lower cup body  22  forms a support table  223  in the upper cup body  21 , and the support piece  227  is located in the support table  223 . When the support table  223  supports the bottom of the cake filter paper, the support piece  227  can effectively support the bottom of the cake filter paper, so as to prevent the cake filter paper from being damaged at this time when the bottom of the cake filter paper directly faces the discharge opening  221 . The support piece  227  may be integrally formed with the lower cup body  22  or may be adhered to the lower cup body  22 . Specifically, the four supporting pieces  227  integrally formed with the lower cup body  22  are shown in this embodiment. 
     A third embodiment of the present disclosure differs from the first embodiment in that: 
     Referring to  FIG.  9   , a handle  14  is provided on the base  1 , the handle  14  may be connected to the positioning ring  11 , the support ring  12 , or the connecting strips  13 , and the shape of the handle  14  may be adjusted according to design requirements. Through the arrangement of the handle  14 , the coffee lover is not easy to stick to the coffee liquid or condensed water on the base  1  or the foldable cup body  2  when taking the coffee filter cup, thereby improving the user experience. In this embodiment, the handle  14  is disposed at the edge of the positioning ring  11 , so as to facilitate the coffee lover to pick up the coffee filter cup. 
     All the above are preferred embodiments of the present disclosure, and the scope of protection of the present disclosure is not limited thereto, and therefore, the equivalent changes made according to the structure, shape and principle of the present disclosure shall fall within the scope of protection of the present disclosure.