JP6665540B2 - Faucet direct connection type water purifier - Google Patents

Description

  The present invention relates to a faucet direct-connection type water purifier provided with a display for displaying a cartridge replacement time.

  Conventionally, cartridges in water purifiers are configured to be replaceable in order to cope with a decrease in filtration performance due to use.However, since it is difficult for the user to properly judge the replacement time, the cartridge replacement time has to be changed. A water purifier provided with a display body for displaying is provided.

  For example, the water purifier disclosed in Patent Literature 1 is provided with a rotatable or slidably movable display body for displaying a cartridge replacement time on a main body or a cover. When a new cartridge is mounted on the water purifier, the display body is moved and adjusted to set the use start time or use end time, so that the cartridge replacement time can always be visually checked. The main body and the display are provided with projections and depressions that fit together, so that the display rotates only when the cover is removed.

  Further, in the water purifier disclosed in Patent Literature 2, the time when the cartridge should be replaced is displayed on a window on the upper surface of the water purifier main body by using a rotatable display body, and the display body is hardly stained. The arrangement of the display is also taken into consideration.

  Alternatively, in the water purifier disclosed in Patent Literature 3, the amount of purified water used, which is an index indicating the life of the cartridge, is detected by an indicator, and is displayed on the LCD to notify the user of the cartridge replacement time. is there.

  However, the water purifier disclosed in Patent Document 1 has a problem that when the user forgets to change the display time or makes a mistake, the cover must be removed to change the display time. there were.

  In the water purifier disclosed in Patent Document 2, care is taken to make the display body less likely to become dirty, but no consideration is given to the case where the display body becomes dirty.

  In the water purifier disclosed in Patent Document 3, since the amount of purified water used is detected by an indicator and displayed on the LCD, the replacement time of the cartridge can be properly determined regardless of the family structure of the user of the water purifier. Since an indicator for detecting the amount, an LCD for displaying the amount of purified water used, and a power supply for operating these are required, there is a problem that the cost of the water purifier is increased.

  Thus, Patent Document 4 discloses a display for displaying the replacement time of the cartridge in a faucet direct-connection type water purifier including a water purifier main body that can be directly attached to the faucet and a cartridge that is detachable from the water purifier main body. Body, and a positioning means for the display body, wherein the display body is exposed on the outer surface, the cartridge is mounted on the water purifier body, and the faucet direct connection type water purifier is assembled and attached to the faucet, the display is performed. A faucet direct connection type water purifier capable of operating the body is disclosed.

  According to the water purifier disclosed in Patent Literature 4, it is possible to easily operate the display for detaching the cartridge and to indicate the replacement time of the cartridge. But it is stated that it can be easily cleaned.

JP-A-6-79265 JP 2008-212932 A JP-A-10-118641 JP 2011-173112 A

  However, also in the water purifier disclosed in Patent Document 4, since the cartridge, the cartridge cover, the display, and the like are detachable from the water purifier main body, when any of the detachable members is detached from the water purifier main body. In addition, there is a concern that the display body may fall off by mistake.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention makes it possible to easily operate a display for displaying a replacement time of a cartridge in a state where a water purifier is assembled by attaching a cartridge and attached to a faucet, and furthermore, the display is provided. It is an object of the present invention to provide a faucet direct-connection type water purifier that does not have a risk of falling.

  In order to solve the above-mentioned problems, the present invention has the following configurations.

  That is, in a faucet direct-connection type water purifier including a water purifier main body that can be directly attached to the faucet and a cartridge that can be attached to and detached from the water purifier main body, the water purifier includes a display body for displaying a replacement time of the cartridge. The body is installed between the water purifier main body and the cartridge, and the display body is locked and held on the water purifier main body so as not to be taken out. The display body can be operated in a state where the faucet direct connection type water purifier is assembled and attached to the faucet.

  Further, in a faucet direct-connection type water purifier including a water purifier body directly attachable to a faucet and a cartridge detachably mounted on the water purifier body, a display body for displaying a replacement time of the cartridge; A detachable member attached to the main body, the display body is installed between the water purifier body and the detachable member, and the display body is locked and held on the water purifier body so that the display body cannot be taken out. The display body can be operated in a state where the cartridge and the detachable member are mounted on the water purifier main body, and the faucet direct-connection type water purifier is assembled and attached to the faucet.

  Preferably, the detachable member is a cover that covers the cartridge.

  A display holding member having a fitting portion, a ring-shaped portion, and a locking portion in this order, wherein the display is ring-shaped, and the display is rotated by the ring-shaped portion of the display holding member; The display body holding member is provided with a concave portion or a convex portion, the water purifier body is provided with a convex portion or a concave portion, and the concave portion or the convex portion provided on the display body holding member. The display body holding member is clamped and fixed to the water purifier main body by engaging the portion and a convex portion or a concave portion provided on the water purifier main body, and the display body is engaged with the water purifier main body. Preferably, it is held rotatably between the parts.

  Further, it is preferable that the display body is ring-shaped, and the display body is rotatably held by the water purifier main body by an enlarged diameter portion of the display body being locked to the water purifier main body. .

  Further, it is preferable that the entire display unit for displaying the replacement time of the cartridge provided on the display body is exposed to the outside.

  According to the present invention, the display body can be operated even in a state where the cartridge is mounted on the water purifier main body or the cartridge and the detachable member are mounted on the water purifier main body to assemble the faucet direct-connection type water purifier and attached to the faucet. Therefore, even if the user forgets to change the display time or makes a mistake, the display time can be changed without removing or disassembling the water purifier from the faucet. In addition, the display body is locked and held on the water purifier body so that it cannot be taken out, so that the display body may be accidentally dropped when detachable members such as cartridges and cartridge covers are removed from the water purifier body. There is no.

  In addition, if the removable member is a cover that covers the cartridge, the cartridge can be satisfactorily attached to the water purifier main body only by attaching and detaching the cover.

  A display holding member having a fitting portion, a ring-shaped portion, and a locking portion in this order, wherein the display is ring-shaped, and the display is rotated by the ring-shaped portion of the display holding member; The display body holding member is provided with a concave portion or a convex portion, the water purifier body is provided with a convex portion or a concave portion, and the concave portion or the convex portion provided on the display body holding member. The display body holding member is clamped and fixed to the water purifier main body by engaging the portion and a convex portion or a concave portion provided on the water purifier main body, and the display body is engaged with the water purifier main body. If the display body holding member is rotatably held between the parts, the display body holding member is firmly fixed to the water purifier main body, and the display body is held between the water purifier main body and the locking portion of the display body holding member. Therefore, the display body cannot be removed and the display body is accidentally dropped. It is not possible to.

  Further, if the display body is ring-shaped, and the enlarged diameter portion of the display body is locked to the water purifier main body so that the display body is rotatably held by the water purifier main body, the display body can be operated during operation, When the detachable member is detached from the water purifier main body, the display body is not accidentally dropped.

  If the entire display unit that indicates the cartridge replacement time provided on the display is exposed to the outside, it is easy for the user to directly see the display, and if the user forgets to change the display time or makes a mistake In addition, it is possible to quickly and correctly change the display time. In addition, if the entire display unit is exposed to the outside, if the display body becomes dirty, wiping and cleaning can be easily performed.

It is a front view of one embodiment of a water purifier concerning the present invention. FIG. 2 is an enlarged plan view showing a state in which an upper cover and a water flow switching mechanism are removed in a water purifier main body constituting the water purifier of FIG. 1. It is a perspective view of a display. 4A and 4B are perspective views of the display body holding member. It is a perspective view which shows the state which combined the display body and the display body holding member. It is a schematic diagram which shows the state by which the diameter expansion part of a display body is latched by the water purifier main body. It is a top view of another embodiment of the water purifier which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments, and various changes and modifications can be made without departing from the technical scope of the present invention. is there.

  FIG. 1 is a front view of an embodiment of the water purifier according to the present invention. In FIG. 1, the water purifier 1 includes a water purifier main body 2 and a substantially cylindrical cartridge 3 that is detachable from the water purifier main body 2. The water purifier main body 2 has an upper cover 4, a lower cover 5, and a water flow switching mechanism disposed in a cover composed of the upper cover 4 and the lower cover 5, and a water flow switching lever 6 is disposed on the right side. Have been. The water purifier main body 2 is closed by inserting and screwing a screw into a screwing portion (not shown) provided on the upper cover 4 and the lower cover 5.

  Between the water purifier main body 2 and the cartridge 3, a display body holding member 7 and a display body 8 capable of displaying a replacement time of the cartridge held by the display body holding member 7 are arranged. The display 8 can be operated even when the water purifier 1 is attached to a faucet. Further, in this embodiment, the entire display portion of the display body 8 is exposed to the outside. However, the entire display portion does not necessarily need to be exposed to the outside. The display 8 may be exposed to such an extent that the characters or numbers indicating the replacement time provided on the display 8 at the portion corresponding to the mark (indicating the replacement time of the cartridge, not shown) can be visually recognized. I just need.

  The water purifier 1 is fixed to the tip of a faucet using a mounting nut 9. Since the display body 8 is operable even when the water purifier 1 is attached to the faucet, the water purifier 1 can be removed from the faucet or disassembled even when the display time is forgotten or changed incorrectly. It is possible to change the display time without any change. Further, if the entire display portion of the display body 8 is exposed to the outside, it is easy for the user to directly recognize the display body 8, and if the display body 8 becomes dirty, it is easy to wipe off and clean.

  The water purifier main body 2 referred to here is an assembly that is continuously used other than the display body 8 and a member such as the cartridge 3 that is detachable from the water purifier main body, and is a member having a built-in water flow switching mechanism. .

  The cartridge 3 is formed by filling an adsorbent such as activated carbon and a hollow fiber membrane in a housing having a bottomed cylindrical shape made of ABS resin having high moldability and high strength. A raw water flow inlet is provided on a lower side surface of the cartridge 3, and a purified water flow outlet is provided on a bottom portion.

  The cartridge 3 is replaced with a bayonet structure that is easily detachable, but may be replaced with a screw fixing structure or a fitting structure including a fitting member. Further, since the display body 8 is operable even when the cartridge 3 is mounted, the display time can be changed without removing the cartridge 3 even if the display time is forgotten or mistakenly changed. It is possible.

  In the cartridge 3, it is preferable that a part or the whole of the housing is made of a transparent ABS resin so that the degree of contamination can be confirmed by looking at the hollow fiber membrane inside. Acrylic resin, polystyrene, AS resin, etc. may be used.

  Next, the display 8 for displaying the replacement time of the cartridge 3, its display mechanism, the positioning means, the engagement mechanism of the display holding member 7, and the fall prevention mechanism of the display 8 will be described in detail.

  First, the display body 8 and its display mechanism will be described.

  When the display body 8 is rotatable, the operation becomes easy. Further, it is preferable that the shape of the display body 8 be a ring shape because the operation becomes easy. Of course, the operation for changing the display time may be not only a rotation operation but also, for example, a linear linear movement (including a reciprocating operation) or a sliding operation.

  Since the display body 8 is ring-shaped and disposed between the water purifier main body 2 and the cartridge 3, even if the display body 8 is operated during use of the water purifier, the display body 8 comes off from the water purifier main body 2. And stable operability can be obtained. On the outer peripheral surface 8a of the display body 8, a sticker on which letters or numbers of a replacement time on a monthly basis are printed can be attached as a display section. The display unit may be printed or engraved on the display 8. Such a simple display can be manufactured at a much lower cost than a display by an LCD or the like. The display 8 is rotatable and can be stopped at any position. If the matching mark (mark indicating the replacement time of the cartridge, not shown) provided on the water purifier main body 2 matches the character or number displayed on the outer peripheral surface 8a of the display body 8, the user can replace the cartridge. Can be confirmed and the replacement time will not be forgotten.

  If supplementary characters such as "cartridge replacement time", "next replacement time", "replacement time", etc. are provided near the matching mark by printing, engraving, sealing, etc., the display will be made. Supplementally, it becomes easier to understand and can enhance functionality.

  In the present embodiment, a description has been given of a case in which characters indicating the replacement time of the cartridge are provided on the display body 8 by sealing, printing, or engraving, and a matching mark is provided on the water purifier main body 2. It is also possible to provide a character or a number indicating the replacement time of the cartridge on the main body 2. In particular, when the display body 8 is directly operated, the latter case (when the matching mark is provided on the display body 8) can make the display body 8 more compact. The display of the replacement time in the direct operation can be realized by, for example, the following configuration. A portion having a straight portion is formed in the water purifier main body 2, a linear groove is provided in the portion, and a plurality of characters of the replacement time are provided on the outer surface of the water purifier main body 2 near the groove along the longitudinal direction of the groove. Print. On the other hand, the length of the display body 8 is made shorter than the length of the groove in the longitudinal direction, a matching mark is printed on the surface thereof, and the display body 8 has a shape and size that can be fitted in the groove. A plurality of concave portions are provided on the inner side surface of the groove corresponding to the character of the replacement time, and a convex portion engaging with the concave portion is provided on the outer side surface of the display body 8. By inserting the display body 8 into the groove and sliding it in the longitudinal direction of the groove, the display body 8 can be positioned with a click feeling and the replacement time can be displayed.

  Further, in the present embodiment, a case has been described in which characters and numerals indicating the replacement time of the cartridge are displayed on the display 8. However, if the life of the cartridge is clearly known, the characters and numerals to be displayed are replaced with those of the cartridge. By setting the start time, it is possible to indicate the cartridge replacement time to the user as a result.

  Next, the means for positioning the display 8 will be described.

  As shown in FIG. 3, a triangular prism portion having a triangular cross section is continuously and repeatedly formed on the inner peripheral surface of the display body 8 so as to be adjacent to the convex portion 10 corresponding to the top of the triangle. Concave portions 11, which are portions corresponding to the tops of the triangles, are formed alternately and continuously. As shown in FIGS. 4A and 4B, the display body holding member 7 has a semicircular ring-shaped portion 12 and a semicircular split ring-shaped portion 13 (fitting portion). On the outer peripheral surface of the ring-shaped portion 12, a convex portion 14 having a triangular prism-shaped projection is formed. The recess 11 can be engaged with the projection 14. The convex portion 14 is formed at the distal end of the cantilever member 14a, and can be shifted in the height direction with the base end portion (a portion opposite to the distal end portion) of the cantilever member 14a as a fulcrum. . That is, cuts C1 and C2 are formed at both ends in the longitudinal direction of the cantilever member 14a so that the cantilever member 14a can move in the height direction.

  Then, the display body 8 is mounted on the ring-shaped portion 12 of the display body holding member 7, and the display body 8 is moved from the state where the projection 14 of the ring-shaped portion 12 is engaged with one of the concave portions 11 of the display body 8. When rotated, the convex portion 14 is displaced so as to sink and comes off the concave portion 11. When the display body 8 is slightly rotated, the projection 14 fits into the next recess 11. At this moment, the user who has performed the rotation operation feels a "click". At the position where the concave portion 11 and the convex portion 14 are engaged, the matching mark points between the numerals on the display portion of the outer peripheral surface 8a of the display body 8 (see FIG. 1) or between the numerals. In this way, the user can rotate and align the display 8 so that the calculated replacement time of the cartridge comes to the position indicated by the matching mark. Even when the display body 8 is attached between the water purifier main body 2 and the cartridge 3, the display body 8 is rotatable, so that the user can easily rotate the display body 8 and click. It can be stopped while obtaining a clear feeling that it is. At this time, since the concave portion 11 of the display body 8 and the convex portion 14 of the ring-shaped portion 12 of the display body holding member 7 are engaged, the display body 8 does not shift. In FIG. 3, the display body 8 has a ring shape, but may have a shape in which a part of the ring is cut away.

  In the present embodiment, the case where the concave portion 11 of the display body 8 is engaged with the convex portion 14 of the ring-shaped portion 12 of the display body holding member 7 has been described. The concave portion may be provided on the ring-shaped portion 12 of the display body holding member 7 so that the convex portion 10 of the display body 8 and the concave portion provided on the ring-shaped portion 12 of the display body holding member 7 are engaged. In this case, a structure may be employed in which the recess provided in the ring-shaped portion 12 of the display holding member 7 is displaced in the height direction.

  Further, an engagement mechanism of the display body holding member 7 will be described.

  As shown in FIGS. 4A and 4B, a pair of left and right arc-shaped concave portions 15 a and 15 b are formed in the semicircular split ring-shaped portion 13 (fitting portion) of the display body holding member 7. . As shown in FIG. 2, a convex portion 16 that can be engaged with the concave portions 15 a and 15 b is formed on the inner surface of the lower cover 5 of the water purifier main body 2. Then, by engaging the arc-shaped concave portions 15a and 15b of the semicircular split ring-shaped portion 13 of the display body holding member 7 with the convex portion 16 of the lower cover 5 of the water purifier main body 2, the display body holding member 7 is formed. Can be clamped and fixed to the lower cover 5 of the water purifier main body 2. In this case, if a convex portion exhibiting the same function as that of the convex portion 16 provided on the inner surface of the lower cover 5 (that can be engaged with the concave portions 15a and 15b) is provided on the inner surface of the upper cover 4, the display body holding member can be provided. 7 by engaging the arc-shaped concave portions 15a and 15b of the semi-circular split ring-shaped portion 13 with the convex portions provided on the upper cover 4 so that the display body holding member 7 is connected to the upper cover 4 of the water purifier main body 2. Can be clamped and fixed. Furthermore, if a convex portion having the same function as that of the convex portion 16 provided on the inner surface of the lower cover 5 (that it can be engaged with the concave portions 15a and 15b) is provided on both inner surfaces of the upper cover 4 and the lower cover 5, By engaging the arc-shaped concave portions 15a and 15b of the semicircular split ring-shaped portion 13 of the display body holding member 7 with the above-mentioned convex portions provided on the upper cover 4 and the lower cover 5, the display body holding member 7 is provided. Between the upper cover 4 and the lower cover 5 of the water purifier main body 2. Contrary to this engagement method, a convex portion is provided on the semicircular split ring-shaped portion 13 of the display body holding member 7, and an arc-shaped concave portion engageable with the convex portion is formed on the water purifier main body 2. The protrusions and the recesses may be provided on the inner surface of the upper cover 4 and / or the lower cover 5 to engage with each other.

Next, a mechanism for preventing the display body from falling will be described.
As described above, the display body 8 is rotatably held by the ring-shaped portion 12 of the display body holding member 7 (see FIG. 5). However, by itself, a detachable member such as a cartridge or a cartridge cover is used. When detaching from the water purifier main body, the display body 8 may be accidentally dropped. In order to prevent such a situation from occurring, the display body holding member 7 also has a locking portion 34 (see FIGS. 4 and 5). The display body 8 is rotatably held between (the cover of) the water purifier main body and the locking portion 34 (see FIGS. 1, 2, and 5). For this reason, the display body 8 is locked by the locking portion 34 of the display body holding member 7 and does not slip off from the ring-shaped portion 12. And, as described above, since the display body holding member 7 is sandwiched and fixed to (the cover which is a member other than the display body holding member 7 of) the water purifier, the display body 8 can be taken out after all. It is locked and held on the water purifier main body 2 so that it cannot be dropped even when a detachable member such as a cartridge or a cartridge cover is detached from the water purifier main body 2.

  Next, an embodiment of a display body fall prevention mechanism different from the above-described embodiment of the display body fall prevention mechanism is shown in FIG. As shown in FIG. 6, a ring-shaped display 17 is provided with a large-diameter portion 18, and the large-diameter portion 18 is configured to be locked to an upper cover 19 and a lower cover 20 of the water purifier main body. Therefore, when the detachable member is detached from the water purifier main body, the display body 17 is not accidentally dropped. Also in this embodiment, the display 17 is locked and held by the water purifier main body so as to be rotatable with the water purifier main body and cannot be taken out.

  Next, another embodiment of the water purifier according to the present invention will be described with reference to FIG. 7 which is a plan view thereof.

  In FIG. 7, the water purifier 21 has a water flow switching lever 23 disposed on the right side of the water purifier main body 22, and a detachable cylindrical cover 25 covering the cartridge 24 disposed behind the switching lever 23. A cylindrical cartridge 24 is disposed in a space formed by the cartridge 22 and a cylindrical cover 25 (a cover that covers the cartridge, that is, a cartridge cover). The water purifier main body 22 has an upper cover and a lower cover (not shown), like the water purifier main body shown in FIG. The water purifier 21 is connected to the faucet by inserting the tip of the faucet into the faucet connection part 28 and fixing the screw using a mounting nut 27 (a member for attaching the water purifier body to the faucet).

  Between the cylindrical cover attachment end of the water purifier main body 22 and the cylindrical cover 25 which is a detachable member, a display body 26 capable of displaying a cartridge replacement time is provided on the water purifier main body 22 with a cartridge 24. Also, in a state where the faucet direct connection type water purifier is assembled by attaching a detachable member and attached to the faucet, the display body 26 can be operated, and the entire display unit 33 included in the display body is exposed to the outer surface. Are arranged as follows.

  Further, in the present embodiment of the water purifier of the present invention, the display body 26 is so formed as to be unable to be taken out by the above-described mechanism for preventing the display body from falling using the display body holding member shown in FIGS. It is locked and held by the container body. That is, the display body 26 is rotatably held between the water purifier main body 22 and the locking portion 35 of the display body holding member. In addition, since the water purifier of the present invention is not limited to the present embodiment, the fall prevention mechanism of the display body using the display body holding member of FIGS. A display body drop prevention mechanism that does not require a display body holding member may be employed.

  As described above, since the display body 26 can be operated even when the water purifier is attached to the faucet, even if the display time is forgotten or a mistake is made, the water purifier can be removed from the faucet or disassembled. It is possible to change the display time without having to do so. Further, since the display body 26 is exposed on the outer surface, the user can easily visually recognize the display body, and when dirty, it is easy to wipe off and clean. Furthermore, since the display 26 can be operated even when the cylindrical cover 25 is attached, even when the display time is forgotten or changed, the display body 26 can be displayed without removing the cylindrical cover 25. Can be changed.

  The water purifier main body 22 referred to here is an assembly that is continuously used except for a member that can be detachably attached to the water purifier main body 22, such as the display body 26, the cartridge 24 and the cylindrical cover 25, and the water flow switching mechanism. Is a member that incorporates

  When the water purifier main body 22 is arranged so that the central axis of the cylindrical cover 25 is horizontal and the central axis of the faucet connection portion 28 is vertical, The vertical configuration of the water purifier can be reduced to make it compact.

  The cartridge 24 is formed by filling an adsorbent such as activated carbon and a hollow fiber membrane in a housing having a bottomed cylindrical shape made of an ABS resin having high moldability and high strength. At the bottom of the cartridge 24, a tubular raw water flow inlet 29 and a tubular purified water flow outlet 30 are provided, and a packing 31 is provided to prevent water leakage at a connection portion with the water purifier main body 22. I have. As the packing 31, one having a circular cross section such as an O-ring, or one having a square shape can be used. Reference numeral 32 denotes a matching mark (a mark indicating the replacement time of the cartridge) provided on the water purifier body 22, and reference numeral 33 denotes a display unit for displaying a month of the replacement time.

  The cartridge 24 can be replaced by removing the cylindrical cover 25 from the cylindrical cover mounting end of the water purifier main body 22. In addition, the cylindrical cover 25 is connected to the cylindrical cover mounting end of the water purifier main body 22 by a bayonet structure that is easily detachable, but may be a screw fixing structure or a fitting structure that fits into a snap.

  The present invention can be used not only for a tap water purifier but also for a stationary water purifier and an undersink type water purifier, but the application range of the present invention is not limited to these.

DESCRIPTION OF SYMBOLS 1 Water purifier 2 Water purifier main body 3 Cartridge 4 Upper cover 5 Lower cover 6 Switching lever 7 Display holding member 8 Display 8a Outer peripheral surface 9 Mounting nut 10 Convex part 11 Concave part 12 Ring-shaped part 13 Split ring-shaped part 14 Convex part 14a Cantilever-like member 15a Concave part 15b Concave part 16 Convex part 17 Display body 18 Large diameter part 19 Upper cover 20 Lower cover 21 Water purifier 22 Water purifier main body 23 Switching lever 24 Cartridge 25 Cylindrical cover 26 Display body 27 Mounting nut 28 Tap connection Section 29 Raw water flow inlet 30 Purified water flow outlet 31 Packing 32 Matching mark 33 Display 34 Lock section 35 Lock section

Claims (5)

A water purifier directly attached to a faucet, comprising a detachable cartridge, a faucet directly connected to the faucet, comprising a ring-shaped display body for displaying a replacement time of the cartridge, wherein the display body is a main body of the water purifier . The display body holding member is held by a display body holding member installed between the cartridge and the cartridge, and the display body holding member has a fitting portion, a ring-shaped portion, and a locking portion in this order, and the fitting portion of the display body holding member has Is provided with a concave portion or a convex portion, a convex portion or a concave portion is provided on the main body of the water purifier, a concave portion or a convex portion provided on the display body holding member, and a convex portion provided on the main body of the water purifier. Or, by engagement with the concave portion, the display body holding member is sandwiched and fixed to the main body of the water purifier, and the display body is rotatable to a ring-shaped portion between the main body of the water purifier and the locking portion. is held, the In the state mounted on the faucet assembly mouth directly coupled water purifier, faucet type water purifier, characterized in that to enable operating the display body. In a faucet direct-connection type water purifier comprising a detachable cartridge, which can be directly attached to a faucet, a ring-shaped display body for displaying a replacement time of the cartridge, and a member detachable from a main body of the water purifier. The display body is held by a display body holding member installed between the main body of the water purifier and the detachable member, and the display body holding member is a fitting part, a ring-shaped part, and a locking part. In this order, a concave portion or a convex portion is provided in the fitting portion of the display body holding member, a convex portion or a concave portion is provided in the main body of the water purifier, and a concave portion provided in the display body holding member. Or the convex portion and the convex portion or the concave portion provided on the main body of the water purifier are engaged, whereby the display body holding member is sandwiched and fixed to the main body of the water purifier, and the display body of the water purifier is Between the body and the locking part It is a rotatably held in a ring-shaped portion, in the water purifier of the state of attaching the removable member to the faucet assembling the faucet type water purifier and attached to the main body, and can operate the display body A faucet direct connection type water purifier.   The faucet direct-connection type water purifier according to claim 2, wherein the detachable member is a cover that covers the cartridge. The said display body is rotatably hold | maintained by the said water purifier main body by the diameter expansion part of the said display body being latched by the said water purifier main body, The Claim 1 characterized by the above-mentioned. The tap-type water purifier described in 1. Faucet type water purifier according to any one of claims 1 to 4, characterized in that the entire display unit for displaying the time to replace the cartridge provided in the display body is exposed to the outside.

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