Portable water bottle cap with built-in filter

Abstract

The present invention relates to a portable water bottle cap with a built-in filter, and more particularly, to a portable water bottle cap with a built-in filter including a cap member removably coupled to an opening of a water bottle, a filter receiving member connected to the cap member at one side thereof, a filter member received in the filter receiving member, the filter member having a filter configured to filter foreign substances contained in water of the water bottle, and an air introduction member connected to the other side of the filter receiving member, the air introduction member being configured to introduce air into the water bottle.

Description

Technical Field

[0001] This application claims the benefit of priority to Korean Patent Application No. 2022-0101056, filed on August 12, 2022, the disclosure of which is incorporated herein by reference in its entirety.

[0002] The present invention relates to a portable water bottle cap with a built-in filter, and more specifically, to a portable water bottle cap with a built-in filter that is capable of completely removing various foreign objects contained in water, wherein the portable water bottle cap is removably attached to a portable water bottle, thereby allowing the portable water bottle cap to be reused. Background Technology

[0003] Due to increasingly serious environmental pollution, the water quality of various water systems, such as rivers, lakes and dams, which serve as water sources, is deteriorating. In order to produce and supply safe drinking water, advanced water treatment processes using ozone, activated carbon and separation membranes are being introduced and operated in most water treatment processes.

[0004] However, due to distrust of tap water, more and more homes and offices are installing expensive water purifiers or purchasing bottled water for drinking. Although commercially bottled water is considered safe and free of bacteria and harmful substances through rigorous quality control, in many cases, it is made from bedrock water or groundwater. Once groundwater is contaminated, it is virtually impossible to remove the contaminants or prevent the contaminated groundwater from migrating to other places; therefore, it cannot be said that bottled water is safe.

[0005] At the same time, people are increasingly concerned about improving their quality of life and health, so they buy bottled water for various exercises, hiking, and recreational activities, and drink enough water, or use tap water in portable water bottles.

[0006] However, even if water is disinfected, it can still be contaminated by bacteria suspended in the air due to contact with air, which may lead to food poisoning, or many consumers are reluctant to drink tap water due to chemicals added to the water source or odors during the water purification process.

[0007] In particular, when traveling abroad, drinking water can be difficult due to differences in water quality and water treatment processes in different countries, and in some cases, people may suffer from serious illnesses.

[0008] As a prior art for solving the above problems, prior art document 1 (Korean Utility Model Registration No. 0215729) discloses a water filter for a portable water bottle, wherein the water filter includes a connecting part and a water purification part. The connecting part is connected to the portable water bottle to close the water inlet. The connecting part has a water outlet in its area. The water purification part is connected to the connecting part and is configured to purify the water received in the portable water bottle and guide the purified water to the water outlet.

[0009] According to existing literature 1, a water filter with a water purification device is connected to a portable water bottle, thereby purifying the water contained in the portable water bottle, making it safe for drinking. However, the replacement cost is high because the entire water filter, including the connecting part and the water purification part, must be replaced, and there are still limitations in removing substances dissolved in the water that cause hardness and odors.

[0010] Therefore, the applicant of this application filed prior art 2 (Korean Patent Registration No. 2156520) concerning a portable water bottle cap with a filtering function as an application, which has been registered as a patent.

[0011] like Figures 1 to 3 As shown, the technology disclosed in prior art document 2 includes a fixing device 10 removably attached to the outer surface of the opening of water bottle B, a cap portion 20 located on the fixing device 10, a filter receiving member 30 located below the fixing device 10, and a filter member 40 configured to filter foreign matter contained in the water of water bottle B.

[0012] The cap portion 20, configured to open and close the discharge portion 11 and prevent foreign objects from being introduced into the water bottle, includes a cap body 21, an extension portion 22, and a connecting portion 23. The extension portion 22 is configured to allow the cap body 21 to tilt easily backward, and the connecting portion 23 is configured to connect the extension portion 22 and the cap body 21 to each other.

[0013] Furthermore, the discharge section 11 is located at the center of the first planar portion of the fixing device 10, and a protruding wall 12 configured to fix the cap portion 20, an air inlet section 13 configured to guide air into the water bottle B, and a movable member 14 configured to open and close the air inlet section 13 are provided around the discharge section 11.

[0014] Specifically, the movable part 14 that opens and closes the air inlet section 13 is configured to introduce air into the water bottle. That is, when drinking water from the bottle, the bottle is pressed by hand while the outlet section 11 is held in the mouth. Since the volume of the water bottle decreases proportionally to the volume of water consumed, it is difficult to press the bottle further, and if little water remains, the water cannot be properly expelled. Therefore, even if little water remains in the bottle, drinking water can be conveniently achieved by providing the air inlet section 13 and the movable part 14.

[0015] However, the moving part 14 consists of a conical head, a cylindrical body, and a flat tail, each of which is made of an elastic material, and the opening and closing of the inlet 13 is affected by the internal pressure of the water bottle, the weight of the moving part 14, and changes in the shape of the moving part 14, which may cause the moving part to malfunction.

[0016] (Existing technical literature)

[0017] (Existing Document 1) Korean Utility Model Registration Publication No. 0215729

[0018] (Existing Document 2) Korean Patent Registration Publication No. 2156520 Summary of the Invention

[0019] Technical issues

[0020] The present invention was made in view of the above-mentioned problems, and the object of the present invention is to provide a portable water bottle cap with a built-in filter that can completely block foreign objects or bacteria contained in water while being replaced at low cost.

[0021] Another object of the present invention is to provide a portable water bottle cap with a built-in filter, which is configured such that air is quickly introduced into the water bottle even when the volume of the water bottle decreases after drinking, thereby improving the convenience of drinking.

[0022] Technical solution

[0023] A portable water bottle cap with a built-in filter according to the present invention for achieving the above-mentioned purpose comprises: a cap member 100 removably coupled to the opening of a water bottle; a filter receiving member 200 connected to the cap member 100 on one side thereon; a filter member 300 received in the filter receiving member 200, the filter member having a filter configured to filter foreign matter contained in the water of the water bottle; and an air introducing member 400 connected to the other side of the filter receiving member 200, the air introducing member being configured to guide air into the water bottle.

[0024] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the cap component 100 may include: a fixing device 110, which is composed of a first circular plate 111 having a first through hole 111' and a first sidewall 112, the fixing device being cylindrical in shape, the first circular plate 111 having a discharge port 113 protruding a predetermined length on one side thereof, the first circular plate 111 having a retainer 114 on the other side thereof, the retainer being configured to communicate with the discharge port 113, the retainer having a predetermined length, the fixing device being removably connected to the opening of the water bottle; and a cap portion 120, the cap portion being configured to open and close the discharge port 113 when connected to the fixing device 110.

[0025] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the filter receiving member 200 may include: an upper support portion 210 fastened to one side of the filter member 300 and a side support portion configured to surround the side surface of the filter member 300. The side support portion is cylindrical in shape, and one side of the side support portion is connected to the upper support portion 210. The upper support portion 210 may be composed of a second circular plate 211 having a second through hole 211' and a second sidewall 212. The upper support portion is cylindrical in shape, and the second circular plate 211 has a first connecting member 2 on one side thereon. 13. The first connecting member is configured to be in close contact with the inner surface of the retainer 114. The first connecting member is cylindrical and has a predetermined length. The second circular plate 211 has a second connecting member 214 on its other side. The second connecting member is configured to communicate with the second through hole 211' and be in close contact with one side of the filter member 300. The second connecting member has a predetermined length. The side support portion 220 may be provided with a plurality of slits 221. The plurality of slits are configured to allow water in the water bottle to pass through the plurality of slits. Each of the slits is cylindrical.

[0026] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the air introduction member 400 may include: a first body 410, the first body including a third circular plate 411 having a third through hole 411' and a third connecting member 412 extending to one side of the third circular plate 411 to be in close contact with the other side of the filter member 300; a second body 420, the second body located on the other side of the first body 410, the second body having a fourth through hole 421(b)' configured to allow air to be introduced through the fourth through hole; a ball 430, the ball being received in the second body 420, the ball being on the same line as the fourth through hole 421(b)'; and a spring 440, the spring being received in the second body 420, the spring being configured to support the ball 430.

[0027] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the first body 410 may also include a first extension portion 413 and a second extension portion 414, the first extension portion being located at the edge of one side of the third circular plate 411 for fixing to the other side of the side support portion 220 of the filter receiving member 200, and the second extension portion extending from the other side of the third circular plate 411 toward the interior of the second body 420.

[0028] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the first extension portion 413 can be fixed to the side support portion 220 of the filter receiving member 200 while being pressed into the side support portion 220.

[0029] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the inner diameter of the first extension portion 413 may be equal to the inner diameter of the side support portion 220 of the filter receiving member 200.

[0030] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the second body 420 may include: a cap 421, the cap being composed of a third sidewall 421(a) formed in a cylindrical shape, a base plate 421(b) having a fourth through hole 421(b)' formed therein, and a fourth sidewall 421(c) configured to connect the third sidewall 421(a) and the base plate 421(b) to each other; and an inner sidewall 422, the inner sidewall being located inside the cap 421, the inner sidewall extending a predetermined length, the inner sidewall being... The wall is cylindrical in shape; and the rib 423 is composed of a plurality of first ribs 423(a) on the inner surface of the inner wall 422 and a plurality of second ribs 423(b) on the inner upper surface of the base plate 421(b). The first ribs extend in the height direction and are spaced apart from each other by a predetermined distance. The second ribs are arranged radially and protrude at a predetermined height. The second ribs are configured to support one side of the spring 440, and the ball 430 can move up and down along the first ribs 423(a) above the second ribs 423(b).

[0031] Furthermore, in the portable water bottle cap with a built-in filter according to the invention, the upper end of the third sidewall 421(a) may be located below the first extension 413.

[0032] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the first extension portion 413 can be fixed to the side support portion 220 of the filter receiving member 200 while being pressed into the side support portion 220. The inner diameter of the first extension portion 413, the inner diameter of the side support portion 220 of the filter receiving member 200, and the inner diameter of the third side wall 421(a) can be equal to each other, and the outer diameter of the side support portion 220 of the filter receiving member 200 and the outer diameter of the third side wall 421(a) can be equal to each other.

[0033] Furthermore, in the portable water bottle cap with a built-in filter according to the invention, the fourth sidewall 421(c) may have an inner diameter that gradually decreases toward the base plate 421(b).

[0034] Furthermore, in the portable water bottle cap with a built-in filter according to the invention, the second extension 414 can be positioned to surround the exterior of the inner sidewall 422.

[0035] Furthermore, in the portable water bottle cap with a built-in filter according to the present invention, the spring 440 may be a coil located between the ball 430 and the second rib 423(b).

[0036] Beneficial effects

[0037] The portable water bottle cap with a built-in filter according to the present invention has the advantage that it can completely remove foreign matter and bacteria contained in water, thereby protecting the health of the drinker.

[0038] Furthermore, the portable water bottle cap with a built-in filter according to the present invention has the advantage that external air is introduced into the water bottle by the pressure inside the water bottle and the elasticity of the spring, thereby improving the convenience of drinking water.

[0039] Furthermore, the portable water bottle cap with a built-in filter according to the present invention has the advantage that the helical spring is arranged on a plurality of radially arranged secondary ribs and is located outside the fourth through hole, thereby preventing the fourth through hole from being blocked by the ball even if the pressure difference between the inside and outside of the water bottle is large, and thus allowing outside air to be easily introduced into the water bottle. Attached Figure Description

[0040] Figure 1 This is a schematic diagram showing a conventional cap with a built-in filter component being installed on a portable water bottle.

[0041] Figure 2 This is a side view of a traditional water bottle cap.

[0042] Figure 3 This is a perspective view showing the open state of the cap portion of a traditional water bottle cap when it is connected to a fixing device.

[0043] Figure 4 This is an enlarged perspective view of the cap component of a portable water bottle cap with a built-in filter according to a preferred embodiment of the present invention.

[0044] Figure 5 This is a perspective view of a portable water bottle cap with a built-in filter according to a preferred embodiment of the present invention.

[0045] Figure 6 yes Figure 5 The diagram shows a cross-sectional perspective view of a portable water bottle cap with a built-in filter.

[0046] Figure 7 yes Figure 6 The exploded view of the sectional perspective shown.

[0047] Figure 8 This is a perspective view of a filter component built into a portable water bottle cap according to a preferred embodiment of the present invention.

[0048] Figure 9 yes Figure 7 A partially enlarged view shows a cross-sectional view of the side support portion and the air introduction component.

[0049] Figure 10 yes Figure 9 The exploded perspective view of the side support portion and air introduction component shown.

[0050] Figure 11 This is an enlarged three-dimensional view of the interior of the second main body that constitutes the air-introducing component.

[0051] Figure 12 This is an enlarged three-dimensional view of the exterior of the second main body that constitutes the air-introducing component. Detailed Implementation

[0052] In the following description, a portable water bottle cap with a built-in filter according to the present invention will be described with reference to the accompanying drawings.

[0053] In this application, it should be understood that the terms “comprising,” “having,” “including,” etc., indicate the presence of the said features, numbers, steps, operations, elements, components, or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, steps, operations, elements, components, or combinations thereof.

[0054] Furthermore, all terms, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains, unless otherwise specified. Common terms, such as those defined in typical dictionaries, shall be interpreted in accordance with their meaning in the context of the relevant art and shall not be interpreted in an ideal or overly formal sense unless the opposite meaning is explicitly defined.

[0055] Figure 4 This is an enlarged perspective view of the cap component of a portable water bottle cap with a built-in filter according to a preferred embodiment of the present invention, and Figure 5 This is a perspective view of a portable water bottle cap with a built-in filter according to a preferred embodiment of the present invention. Furthermore, Figure 6 yes Figure 5 The diagram shown is a cross-sectional perspective view of a portable water bottle cap with a built-in filter. Figure 7 yes Figure 6 The exploded view of the sectional perspective shown, and Figure 8 This is a perspective view of a filter component built into a portable water bottle cap according to a preferred embodiment of the present invention.

[0056] The water bottle cap according to the invention has a built-in filter. Therefore, when drinking water, the water passes through the filter, thereby removing bacteria and various foreign matter, including substances that cause hardness, contained in the water bottle.

[0057] like Figures 4 to 8 As shown, the portable water bottle cap with a built-in filter having the above-described function according to the present invention includes: a cap member 100, which is removably coupled to the opening of a water bottle; a filter receiving member 200, which is connected to the cap member 100 on one side; a filter member 300, which is received in the filter receiving member 200 and has a filter configured to filter foreign matter contained in the water in the water bottle; and an air introduction member 400, which is connected to the other side of the filter receiving member 200 and is configured to guide air into the water bottle.

[0058] First, the cap component 100, which is removably attached to the opening of the water bottle, will be described in detail.

[0059] The cap component 100 includes a fixing device 110 and a cap portion 120 removably connected to the opening of the water bottle.

[0060] Specifically, the fixing device 110 is cylindrical in shape and includes a first circular plate 111 having a first through hole 111' at its center and a first sidewall 112 having a plurality of protrusions 112' formed thereon, which are configured to help prevent the cap from slipping off the hand when the cap is attached to or removed from the water bottle. Furthermore, a discharge port 113 protruding a predetermined length is provided on one side of the first circular plate 111, allowing water to be discharged into the mouth when the water bottle is held in the mouth or when the bottle is pressed down to drink. A retainer 114 of predetermined length is provided on the other side of the first circular plate 111, communicating with the first through hole 111' and the discharge port 113. The retainer 114 is connected to the upper support portion 210 constituting the filter receiving member 200.

[0061] A female thread configured to engage with the outer surface of the opening of the water bottle via a male-female thread engagement can be formed on the inner side of the first sidewall 112.

[0062] The cap portion 120 is configured to prevent foreign objects from being introduced into the water bottle and to prevent contamination of the discharge port 113, and is rotatably connected to the fixing device 110 in a hinged manner. In particular, when the cap portion 120 is further provided with an auxiliary cap portion 121 on its inner side, which is in close contact with the inner or outer surface of the discharge port 113, the introduction of foreign objects or contamination of the discharge port 113 can be reliably prevented.

[0063] The filter receiving member 200, which is connected to the cap member 100 at one end, will be described. The filter receiving member 200 includes an upper support portion 210 fastened to one side of the filter member 300 and a side support portion 220 configured to surround the side surface of the filter member 300.

[0064] First, the upper support portion 210 has a cylindrical shape, which includes a second circular plate 211 having a second through hole 211' at its center and a second sidewall 212.

[0065] A cylindrical first connecting member 213 with a predetermined length is provided on one side of the second circular plate 211 (i.e., the surface of the second circular plate facing the cap member 100) so as to be in close contact with the inner surface of the retainer 114 when it is inserted into the inner surface of the retainer 114, and a second connecting member 214 with a predetermined length is provided on the other side of the second circular plate 211 so as to be in close contact with the fastening hole 311 of the filter member 300 when it is inserted into the fastening hole 311 of the filter member 300.

[0066] At this time, the first connecting member 213, the second through hole 211', and the second connecting member 214 are in communication with each other, so that the water that has passed through the filter 330 passes through the second connecting member 214, the second through hole 211', and the first connecting member 213 in sequence. Of course, the water that has passed through the first connecting member 213 is discharged through the drain port 113 via the retainer 114.

[0067] Meanwhile, to prevent leakage, the retainer 114 and the first connecting member 213 are preferably in close contact with each other, and more preferably fixed to each other by male and female thread engagement or by using known adhesives.

[0068] The side support portion 220 has a hollow cylindrical shape to receive the filter member 300 and is provided with a plurality of slits 221 so that water from the water bottle can be introduced into the filter member 300. One side of the side support portion 220 (i.e., the end of the side support portion facing the upper support portion 210) is fixed to the inner surface of the second sidewall 212 of the upper support portion 210 by means of a male-female thread engagement or by using adhesive.

[0069] The filter component 300 is received in the filter receiving component 200 to filter foreign matter contained in water, and includes a first sealing portion 310, a second sealing portion 320, and a filter 330.

[0070] The first sealing portion 310 fixes the upper part of the filter 330 and has a fastening hole 311 at its center. The second connecting member 214 is inserted into the fastening hole 311, thereby communicating between the first sealing portion and the first connecting member 213. The second sealing portion 320 is positioned at a predetermined distance from the first sealing portion 310 and fixes the lower part of the filter 330.

[0071] Here, the filter 330 is preferably formed in a corrugated shape with a predetermined number of pleats in the longitudinal direction, because this increases the surface area of ​​the filter per unit volume and also makes it easier to maintain the shape of the filter. Of course, it is obvious that the filter 330 has a filter water channel (not shown) formed in the longitudinal direction at its center, so that water that has been introduced from the outside of the filter and has passed through the filter can move into the interior of the second connecting member 214.

[0072] Figure 9 yes Figure 7 A partially enlarged view shows a cross-sectional view of the side support portion and the air inlet component, and Figure 10 yes Figure 9 An exploded perspective view of the side support portion and air introduction component shown. Furthermore, Figure 11 It is an enlarged three-dimensional view of the interior of the second main body constituting the air introduction component, and Figure 12 This is an enlarged three-dimensional view of the exterior of the second main body that constitutes the air-introducing component.

[0073] Reference Figures 9 to 12 Detailed description of air introduction component 400.

[0074] An air inlet member 400, configured to guide air into a water bottle, is connected to the other side of a side support portion 220 and includes a first body 410, a second body 420, a ball 430, a spring 440, and an encapsulation member 450.

[0075] First, the first body 410 includes a third circular plate 411, a third connecting member 412, a first extension portion 413, and a second extension portion 414. The third circular plate 411 is the location for the second sealing portion 320 of the filter member, and a third through hole 411' is provided at its center, through which air that has passed through the filtered water channel of the filter can be introduced into the water bottle.

[0076] The third connecting member 412, when protruding a predetermined length toward the filter member, has a cylindrical shape extending from the center of the third circular plate 411, more specifically from the outside of the third through hole 411'. The third connecting member 412 is inserted into a fastening hole (not shown) located below the filter member, and provides passages for water and air while securing the filter member.

[0077] The first extension 413 is located at the edge of the third circular plate 411 to face the filter member. The first extension 413 is cylindrical in shape and is fixed to the other side of the side support portion 220.

[0078] Here, the first extension portion 413 is preferably fixed to the side support portion 220 of the filter receiving member in a state where it is pressed into the side support portion 220, because the first extension portion 413 and the side support portion 220 can be firmly fixed to each other.

[0079] Furthermore, in order to prevent the filter member 300 and the first extension portion 413 received in the filter receiving member from colliding with each other, and also to prevent unnecessary volume increase of the filter receiving member 200, it is more preferable that the inner diameter of the first extension portion 413 is equal to the inner diameter of the side support portion 220 of the filter receiving member.

[0080] The second extension 414 has a cylindrical shape that extends a predetermined length in a direction toward the other side of the third circular plate 411 (i.e., the interior of the second body 420), and is formed to surround the inner sidewall 422 in close contact with the outer surface of the inner sidewall 422, as will be described below.

[0081] The second body 420 is located on the other side of the first body 410 (i.e., below the first body 410). The second body is hollow to receive the ball 430, the spring 440 and the encapsulation member 450, and includes a cover 421, an inner wall 422 and a rib 423.

[0082] First, the cover 421 forms the appearance of the second body 420 and includes a cylindrical third sidewall 421(a), a circular base plate 421(b), and a fourth sidewall 421(c), which is configured to connect the third sidewall 421(a) and the base plate 421(b) to each other.

[0083] Here, a portion of the upper end of the third sidewall 421(a) is located below the first extension 413, and the remainder is located below the side support portion 220 of the filter receiving member. That is, the thickness of the third sidewall 421(a) is equal to the thickness of the side support portion 220, resulting in the outer diameter of the third sidewall 421(a) and the outer diameter of the side support portion 220 being equal to each other, and the inner diameters of the first extension 413, the side support portion 220, and the third sidewall 421(a) being equal to each other.

[0084] In the above configuration, the side support portion 220, the first body 410 and the cover 421 can be firmly fixed to each other, and the side support portion 220 and the second body 420 can be integrally formed.

[0085] The fourth sidewall 421(c) preferably has an inner diameter that gradually decreases toward the base plate 421(b) so that air can be easily introduced into the opening of the water bottle by inserting the air inlet member 400. Reference numeral 421(c)' indicates a fifth through hole, which is configured to allow water to flow into or through the space between the second extension 414 and the third sidewall 421(a).

[0086] Meanwhile, a fourth through hole 421(b)' for allowing air from the outside to pass through and be introduced into the water bottle is formed in the circular base plate 421(b).

[0087] The inner sidewall 422 has a cylindrical shape that extends upward from the base plate 421(b) for a predetermined length and is fixed to the inner surface of the second extension portion 414 in close contact with it.

[0088] Rib 423 includes a first rib 423(a) and a second rib 423(b). The first rib 423(a) is located on the inner surface of the inner wall 422 and is composed of a plurality of ribs extending in the height direction and spaced apart from each other by a predetermined distance, forming a radial shape when viewed from above. Here, the shape of the first rib 423(a) may be, but is not necessarily limited to, a rectangular hexahedron or a cylinder.

[0089] The first rib 423(a) provides a path for the ball 430 and the spring 440 to move and prevents the ball 430 and the spring 440 from coming into close contact with the inner wall 422, thereby providing a space portion S as a path for the movement of air.

[0090] Furthermore, the second rib 423(b) is located on the inner upper surface of the base plate 421(b), more specifically, between the fourth through hole 421(b)' and the inner sidewall 422. A plurality of rods are radially arranged to prevent the ball 430 from blocking the fourth through hole 421(b)'. Here, the second rib 423(b) can be formed in the same manner as the first rib 423(a) in the shape of a rectangular hexahedron or a cylinder; however, the invention is not limited thereto.

[0091] The ball 430 moves up and down along the first rib 423(a) to determine whether the third through hole 411' is opened or closed. One side of the helical spring 440 is located on the second rib 423(b), and the other side is configured to support the ball 430, thereby controlling the up and down movement of the ball 430.

[0092] Reference numeral 450 indicates an encapsulation component, which may be a circular O-ring configured to completely block water and air, but may be omitted if only a ball 430 is used to achieve sufficient airtightness.

[0093] When the portable water bottle cap with the built-in filter and the above structure is installed on the water bottle and the water bottle is pressed by hand to drink water, the ball 430 blocks the third through hole 411' due to the external pressure applied to the water bottle and the elastic force of the spring 440. As a result, water is introduced into the side support portion 220 of the filter receiving member 200 and discharged to the outside through the filter 330, the second connecting member 214, the retainer 114 and the discharge port 113.

[0094] After drinking, the volume of the water bottle decreases, resulting in a lower pressure inside the bottle compared to the outside. Consequently, outside air flows sequentially through the discharge port 113, the retainer 114, the second connecting member 214, the filtered water channel of the filter 330, the third connecting member 412, and the third through-hole 411', and is introduced into the water bottle through the fourth through-hole 421(b)'. As a result, the water bottle returns to its original volume.

[0095] Although the specific details of the invention have been described in detail, those skilled in the art will understand that the detailed description only discloses preferred embodiments of the invention and therefore does not limit the scope of the invention. Consequently, those skilled in the art will understand that various changes and modifications are possible without departing from the category and technical spirit of the invention, and it will be apparent that such changes and modifications fall within the scope of the appended claims.

[0096] (Description of reference numerals in the attached diagram)

[0097] 100: Cap component

[0098] 110: Fixture

[0099] 111: First circular plate, 111': First through hole

[0100] 112: First lateral wall; 112': Protrusion

[0101] 113: Discharge port, 114: Retainer

[0102] 120: Hat section, 121: Auxiliary hat section

[0103] 200: Filter receiving component

[0104] 210: Upper support section

[0105] 211: Second circular plate, 211': Second through hole

[0106] 212: First sidewall; 213: First connecting member

[0107] 214: Second connecting member

[0108] 220: Side support section; 221: Slit

[0109] 300: Filter component

[0110] 310: First sealing part; 311: Fastening hole

[0111] 320: Second sealing part

[0112] 330: Filter

[0113] 400: Air intake component

[0114] 410: The First Subject

[0115] 411: Third circular plate, 411': Third through hole

[0116] 412: Third connecting member; 413: First extension portion

[0117] 414: Second Extension

[0118] 420: Second Subject

[0119] 421: Cover

[0120] 421(a): Third sidewall, 421(b): Base plate

[0121] 421(b)': Fourth through hole

[0122] 421(c): Fourth sidewall; 421(c)': Fifth through hole

[0123] 422: Inner wall; 423: Rib

[0124] 423(a): First rib, 423(b): Second rib

[0125] 430: Ball

[0126] 440: Spring

[0127] 450: Encapsulation component

[0128] S: Spatial section

Claims

1. A portable water bottle cap with a built-in filter, the portable water bottle cap comprising: A cap component, which is removably connected to the opening of the water bottle; A filter receiving member, which is connected to the cap member on one side; A filter component, received in a filter receiving component, the filter component having a filter configured to filter foreign matter contained in the water in the water bottle; as well as An air-introducing component, connected to the other side of the filter receiving component, is configured to direct air into the water bottle. The cap component includes: A fixing device comprising a first circular plate having a first through hole and a first sidewall, the fixing device being cylindrical in shape, the first circular plate having a discharge port protruding a predetermined length on one side thereof, and a retainer having a predetermined length configured to communicate with the discharge port on the other side thereof, the retainer being removably connected to the opening of the water bottle; and The cap portion is configured to open and close the discharge port when connected to the fixing device. The filter receiving member includes: an upper support portion fastened to one side of the filter member; and a side support portion configured to surround a side surface of the filter member, the side support portion being cylindrical in shape, and one side of the side support portion being connected to the upper support portion. The upper support portion is composed of a second circular plate with a second through hole and a second sidewall. The upper support portion is cylindrical in shape. A first connecting member is provided on one side of the second circular plate. The first connecting member is configured to be in close contact with the inner surface of the retainer. The first connecting member is cylindrical and has a predetermined length. A second connecting member is provided on the other side of the second circular plate. The second connecting member is configured to communicate with the second through hole and be in close contact with one side of the filter member. The second connecting member also has a predetermined length. The side support portion is provided with a plurality of slits configured to allow water from the water bottle to pass through them, each slit being cylindrical in shape. The air introduction component includes: A first body, comprising a third circular plate having a third through hole and a third connecting member extending to one side of the third circular plate to make close contact with the other side of the filter member; A second body, located on the other side of the first body, has a fourth through hole configured to allow air to be introduced through the fourth through hole; A ball, which is received in the second body, and the ball is aligned with the fourth through hole; and A spring, received within the second body, is configured to support the ball. The first entity further includes: A first extension portion, located at one edge of the third circular plate, is secured to the other side of the side support portion of the filter receiving member; and The second extension extends from the other side of the third circular plate toward the interior of the second body.

2. The portable water bottle cap according to claim 1, wherein, The first extension is fixed to the side support portion while being pressed into the side support portion of the filter receiving member.

3. The portable water bottle cap according to claim 2, wherein, The inner diameter of the first extension is equal to the inner diameter of the side support portion of the filter receiving member.

4. The portable water bottle cap according to claim 1, wherein, The second subject includes: The cover is composed of a third sidewall formed in a cylindrical shape, a bottom plate having the fourth through hole formed therein, and a fourth sidewall configured to connect the third sidewall and the bottom plate to each other. The inner sidewall, located inside the cover, extends a predetermined length and is cylindrical in shape; and The ribs are composed of a plurality of first ribs located on the inner surface of the inner sidewall and a plurality of second ribs located on the inner upper surface of the base plate. The first ribs extend in the height direction and are spaced apart from each other by a predetermined distance. The second ribs are arranged radially and protrude from each other by a predetermined height. The second ribs are configured to support one side of the spring. The ball moves up and down along the first rib above the second rib.

5. The portable water bottle cap according to claim 4, wherein, The upper end of the third sidewall is located below the first extension portion.

6. The portable water bottle cap according to claim 5, wherein, The first extension is secured to the side support portion while being pressed into the side support portion of the filter receiving member. The inner diameter of the first extension, the inner diameter of the side support portion of the filter receiving member, and the inner diameter of the third sidewall are equal to each other, and The outer diameter of the side support portion of the filter receiving member and the outer diameter of the third sidewall are equal to each other.

7. The portable water bottle cap according to claim 5, wherein, The fourth sidewall has an inner diameter that gradually decreases toward the base plate.

8. The portable water bottle cap according to claim 4, wherein, The second extension is positioned to surround the exterior of the inner sidewall.

9. The portable water bottle cap according to claim 4, wherein, The spring is a coil located between the ball and the second rib.

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