Portable water bottle lid with built-in filter

Abstract

The present invention relates to a portable water bottle cover with a built-in filter, and more particularly, to a portable water bottle cover with a built-in filter, the cover including: a cap member that is detachably attached to an opening of a water bottle; a filter housing member that is connected to the cap member at one side; a filter member that is housed in the filter housing member and has a filter for filtering out foreign matter contained in the water in the water bottle; and an air inlet member that is connected to the other side of the filter housing member for guiding air into the water bottle.

Description

[Technical field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 2022-0101056 filed on August 12, 2022, and all contents disclosed in the Korean Patent Application are incorporated herein by reference.

[0002] The present invention relates to a portable water bottle cover with a built-in filter, and more particularly to a portable water bottle cover with a built-in filter that can completely remove various foreign objects contained in water, and that is detachable from a portable water bottle and can be used repeatedly. [Background technology]

[0003] Due to the increasingly serious environmental pollution, the quality of water in various water systems such as rivers, lakes and dams, which are sources of water intake, is deteriorating. In order to produce and supply safe drinking water, most water purification plants are now operating by introducing advanced water purification processes such as ozone, activated carbon and separation membranes.

[0004] However, due to distrust in tap water, an increasing number of households and offices are installing expensive water purifiers or purchasing raw water to use as drinking water. Although raw water sold in the city is considered safe from bacteria and harmful substances due to strict quality control, this raw water is often sourced from bedrock water or groundwater, and once groundwater is contaminated, it is virtually impossible to remove the contaminants, and it is also impossible to stop the contaminated groundwater from moving to other places, so it cannot be said with certainty that raw water is safe.

[0005] Meanwhile, as people become more interested in improving their quality of life and health, they may buy unpasteurized water or fill their portable water bottles with tap water to drink when engaging in various physical activities, mountain climbing, sports activities, or to obtain sufficient hydration.

[0006] However, even though the water is sterilized, when it comes into contact with the air, it can become contaminated by floating bacteria and cause food poisoning, and many consumers are hesitant to drink tap water due to odors caused by chemicals added at the water source or during the water purification process.

[0007] In particular, when traveling abroad, the water can be difficult to drink due to differences in water quality and water purification processes between countries, and in severe cases, it can even lead to serious illnesses.

[0008] As a conventional technique for solving the above problems, Patent Document 1 (Korean Utility Model Registration No. 20-0215729) discloses a water purification filter for a portable water bottle, which includes a coupling part that is coupled to the portable water bottle to close the water inlet and has a water outlet formed in one area, and a water purification part that is coupled to the coupling part and purifies the water contained in the portable water bottle and guides it to the water outlet.

[0009] According to Patent Document 1, by combining a water purification filter having a water purification mechanism with a portable water bottle, the water contained in the portable water bottle can be purified and drunk, which has the advantage of making it safer to drink. However, since the entire water purification filter including the combining part and the water purification part must be replaced, the replacement costs are high, and furthermore, there is still a limit to removing hardness-inducing substances and odors present in a dissolved state in the water.

[0010] Therefore, the applicant of the present application has filed and received registration of Patent Document 2 (Korean Patent Registration No. 20-2156520) relating to a portable water bottle cover with a filtering function.

[0011] The technology disclosed in Patent Document 2, as shown in Figures 1 to 3, includes a fixing part 10 that is detachably connected to the outer surface of the opening of water bottle B, a cap part 20 located on the upper part of the fixing part 10, a filter housing member 30 located below the fixing part 10, and a filter member 40 for filtering out foreign matter contained in the water in water bottle B.

[0012] The cap portion 20, which opens and closes the discharge portion 11 and prevents external foreign objects from entering the water bottle, includes a cap body 21, an extension portion 22 for easily bending the cap body 21, and a connecting portion 23 that connects the extension portion 22 and the cap body 21.

[0013] In addition, the discharge portion 11 is located in the center of the first flat portion of the fixing portion 10, and the outer periphery of the discharge portion 11 is provided with a raised wall 12 for fixing the cap portion 20, an air inlet portion 13 for directing the flow of air into the water bottle B, and a movable piece 14 for opening and closing the air inlet portion 13.

[0014] In particular, the moving piece 14 that opens and closes the air inlet 13 is intended to let air into the water bottle. That is, when drinking water from the water bottle, one holds the outlet 11 in one's mouth and pressurizes the water bottle with one's hand, but the volume of the water bottle decreases by the volume of the water consumed, making it difficult to further pressurize the water bottle, and water does not discharge well when there is only a little water left. Therefore, even if there is only a little water left in the water bottle, there is an advantage that one can conveniently drink water through the air inlet 13 and the moving piece 14.

[0015] However, it has been pointed out that the moving piece 14 is made of an elastic material consisting of a conical head, a cylindrical body, and a tail with a flat plate structure, and the opening and closing of the air inlet 13 is affected by the internal pressure of the water bottle, the weight of the moving piece 14, and changes in the shape of the moving piece 14, so there are cases where it does not function properly. [Prior art documents] [Patent documents]

[0016] [Patent Document 1] Korean Registered Utility Model No. 20-0215729 [Patent Document 2] Korean Registered Utility Model No. 20-2156520 Summary of the Invention [Problem to be solved by the invention]

[0017] The present invention has been devised to solve the above-mentioned problems, and its object is to provide a portable water bottle cover with a built-in filter that completely blocks foreign matter and bacteria contained in water and has low replacement costs.

[0018] Another object of the present invention is to provide a portable water bottle cover with a built-in filter that can quickly let air into the water bottle, making it easier to drink, even if the volume of the water bottle itself decreases due to drinking. [Means for solving the problem]

[0019] In order to solve the above problems, the portable water bottle cover with a built-in filter according to the present invention is characterized by comprising: a cap member (100) detachably attached to an opening of a water bottle; a filter receiving member (200) connected at one side to the cap member (100); a filter member (300) received in the filter receiving member (200) and equipped with a filter for filtering out foreign matter contained in the water in the water bottle; and an air inlet member (400) connected at the other side of the filter receiving member (200) for guiding air into the water bottle.

[0020] In addition, in the portable water bottle cover with built-in filter according to the present invention, the cap member (100) has a cylindrical shape consisting of a first circular plate (111) with a first through hole (111') and a first side wall (112), and is provided with an outlet (113) protruding a predetermined length on one side of the first circular plate (111), and a holder (114) of a predetermined length that is connected to the outlet (113) on the other side of the first circular plate (111). The cap member (100) includes a fixing part (110) that is detachably connected to the opening of the water bottle, and a cap (120) connected to the fixing part (110) for opening and closing the outlet (113).

[0021] In addition, in the portable water bottle cover with a built-in filter according to the present invention, the filter accommodating member (200) includes an upper support part (210) fastened to one side of the filter member (300), and a side support part (220) having a cylindrical shape surrounding the side of the filter member (300) and one side connected to the upper support part (210). The upper support part (210) has a cylindrical shape composed of a second circular plate (211) having a second through hole (211') and a second side wall (212). One side of the circular plate (211) is provided with a cylindrical first connecting member (213) having a predetermined length so as to be in close contact with the inner surface of the holder (114), while the other side of the second circular plate (211) is provided with a second connecting member (214) that communicates with the second through hole (211') and has a predetermined length so as to be in close contact with one side of the filter member (300). The side support part (220) is cylindrical in shape and has a plurality of slits (221) through which water in the water bottle can pass.

[0022] In addition, in the portable water bottle cover with built-in filter according to the present invention, the air inlet member (400) includes a first body (410) including a third circular plate (411) with a third through hole (411') and a third connecting member (412) extending to one side of the third circular plate (411) so as to be in close contact with the other side of the filter member (300); a second body (420) located on the other side of the first body (410) and having a fourth through hole (421(b)') for air inlet; a ball (430) accommodated inside the second body (420) and positioned on the same line as the fourth through hole (421(b)'); and a spring (440) accommodated inside the second body (420) and supporting the ball (430).

[0023] In addition, in the portable water bottle cover with built-in filter according to the present invention, the first body (410) further includes a first extension part (413) located on one side edge of the third circular plate (411) so as to be fixed to the other side of the side support part (220) of the filter receiving member (200), and a second extension part (414) extending from the other side of the third circular plate (411) toward the inside of the second body (420).

[0024] In addition, in the portable water bottle cover with a built-in filter according to the present invention, the first extension part (413) is fixed in a recessed state to the side support part (220) of the filter receiving member (200).

[0025] In addition, in the portable water bottle cover with built-in filter according to the present invention, the inner diameter of the first extension part (413) is the same as the inner diameter of the side support part (220) of the filter receiving member (200).

[0026] In addition, in the portable water bottle cover with built-in filter according to the present invention, the second body (420) includes a cover (421) including a cylindrical third side wall (421(a)), a bottom plate (421(b)) having the fourth through hole (421(b)') formed therein, and a fourth side wall (421(c)) connecting the third side wall (421(a)) and the bottom plate (421(b)), a cylindrical inner side wall (422) located inside the cover (421) and extending a predetermined length, and a second body (420) including a second side wall (421(c)) connecting the third side wall (421(a)) and the bottom plate (421(b)). and a rib (423) consisting of a plurality of first ribs (423(a)) located on the inner surface of the bottom plate (421(b)) and extending in the height direction while being spaced apart at a predetermined interval, and a plurality of second ribs (423(b)) located on the inner upper surface of the bottom plate (421(b)), protruding a predetermined height and arranged radially, supporting one side of the spring (440), and the ball (430) moves up and down along the first rib (423(a)) from the top of the second rib (423(b)).

[0027] In addition, in the portable water bottle cover with built-in filter according to the present invention, the upper end of the third side wall (421(a)) is located below the first extension part (413).

[0028] In addition, in the portable water bottle cover with a built-in filter according to the present invention, the first extension part (413) is fixed in a recessed state into the side support part (220) of the filter accommodating member (200), and the inner diameter of the first extension part (413), the inner diameter of the side support part (220) of the filter accommodating member (200) and the inner diameter of the third side wall (421(a)) are the same, and the outer diameter of the side support part (220) of the filter accommodating member (200) and the outer diameter of the third side wall (421(a)) are the same.

[0029] In addition, in the portable water bottle cover with built-in filter according to the present invention, the fourth side wall (421(c)) has an inner diameter that gradually decreases toward the bottom plate (421(b)).

[0030] In addition, in the portable water bottle cover with built-in filter according to the present invention, the second extension part (414) is positioned so as to have a shape surrounding the outside of the inner side wall (422).

[0031] In addition, in the portable water bottle cover with built-in filter according to the present invention, the spring (440) has a coil shape and is located between the ball (430) and the second rib (423(b)). Effect of the Invention

[0032] The portable water bottle lid with a built-in filter of the present invention has the advantage of being able to completely remove foreign matter and bacteria contained in the water, thereby protecting the health of the person drinking it.

[0033] In addition, the portable water bottle cover with a built-in filter of the present invention has the advantage that the internal pressure of the water bottle and the elastic force of the spring allow outside air to flow into the water bottle, making it more convenient to drink.

[0034] In addition, according to the portable water bottle cover with built-in filter of the present invention, a coil spring is seated on the upper part of multiple second ribs arranged radially around the outer periphery of the fourth through hole, so that even if there is a large pressure difference between the inside and outside of the water bottle, the structure prevents the fourth through hole from being blocked by the ball, which has the advantage that outside air can easily flow into the water bottle. [Brief description of the drawings]

[0035] [Figure 1] FIG. 1 is a schematic diagram showing a state in which a lid incorporating a filter member according to the prior art is attached to a portable water bottle. [Diagram 2] FIG. 1 is a side view of a water bottle lid according to the prior art. [Diagram 3] 1 is a perspective view showing a state in which a cap part remains connected to a fixing part in a conventional water bottle lid in an open state. FIG. [Figure 4] 1 is an enlarged perspective view of a cap member of a portable water bottle lid incorporating a filter according to a preferred embodiment of the present invention; [Diagram 5] 1 is a perspective view of a portable water bottle lid incorporating a filter according to a preferred embodiment of the present invention; FIG. [Figure 6] FIG. 6 is a cutaway perspective view of the portable water bottle lid with the built-in filter shown in FIG. 5. [Figure 7] FIG. 7 is an exploded view of the cutaway perspective view shown in FIG. [Figure 8] 1 is a perspective view of a filter member built into a portable water bottle lid according to a preferred embodiment of the present invention; [Figure 9] FIG. 8 is an enlarged view of a portion of FIG. 7, showing a cross-sectional view of a side support portion and an air inflow member. [Figure 10] 10 is an exploded perspective view of the side support portion and the air inflow member shown in FIG. 9. [Figure 11]FIG. 2 is an enlarged perspective view of the inside of a second body constituting an air inlet member. [Figure 12] FIG. 2 is an enlarged perspective view of the outside of a second body constituting an air inlet member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0036] Hereinafter, a portable water bottle cover with a built-in filter according to the present invention will be described with reference to the accompanying drawings.

[0037] In this application, the terms "comprise", "have", "include" and the like are intended to specify the presence of features, numbers, steps, components, parts or combinations thereof described in the specification, but should be understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0038] In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted as having an ideal or overly formal meaning unless expressly defined in this application.

[0039] Fig. 4 is an enlarged perspective view of a cap member of a portable water bottle cover with a built-in filter according to a preferred embodiment of the present invention, Fig. 5 is a perspective view of the portable water bottle cover with a built-in filter according to a preferred embodiment of the present invention, Fig. 6 is a cutaway perspective view of the portable water bottle cover with a built-in filter shown in Fig. 5, Fig. 7 is an exploded view of the cutaway perspective view shown in Fig. 6, and Fig. 8 is a perspective view of a filter member built into the portable water bottle cover according to a preferred embodiment of the present invention.

[0040] The water bottle cover of the present invention has a built-in filter, so that water passes through the filter when drinking, removing bacteria and various foreign matter, including hardness-inducing substances, contained in the water in the water bottle.

[0041] As shown in Figures 4 to 8, the portable water bottle cover having the filter of the present invention having the above-mentioned functions includes a cap member 100 that is detachably attached to the opening of the water bottle, a filter receiving member 200 connected to the cap member 100 at one side, a filter member 300 that is received in the filter receiving member 200 and has a filter for filtering out foreign matter contained in the water in the water bottle, and an air inlet member 400 that is connected to the other side of the filter receiving member 200 for guiding air into the water bottle.

[0042] First, the cap member 100 that is detachably coupled to the opening of the water bottle will be specifically described.

[0043] The cap member 100 includes a fixing part 110 that is detachably coupled to the opening of the water bottle, and a cap 120.

[0044] Specifically, the fixing part 110 has a cylindrical shape including a first circular plate 111 having a first through hole 111' at the center and a first side wall 112 having a number of protrusions 112' formed thereon to prevent the cap from slipping when the cap is attached to or detached from the water bottle. Also, one side of the first circular plate 111 has a discharge port 113 protruding by a predetermined length so that water can be discharged toward the mouth when the water bottle is held in the mouth or pushed by the hand during drinking. The other side of the first circular plate 111 has a holder 114 of a predetermined length that communicates with the first through hole 111' and the discharge port 113. The holder 114 is connected to the upper support part 210 constituting the filter receiving member 200.

[0045] Also, a female screw thread may be formed on the inside of the first side wall 112 so that it can be fastened to the outer surface of the opening of the water bottle in a male-female screw fastening manner.

[0046] The cap 120 is for preventing foreign objects from entering the water bottle and for preventing the outlet 113 from becoming contaminated, and is rotatably connected to the fixed part 110 by a hinge or the like. In particular, if an auxiliary cap 121 that fits tightly with the inner and outer surfaces of the outlet 113 is further provided inside the cap 120, it is possible to reliably prevent foreign objects from entering or the outlet 113 from becoming contaminated.

[0047] The filter accommodating member 200, one side of which is connected to the cap member 100, will now be described. The filter accommodating member 200 includes an upper support part 210 fastened to one side of the filter member 300, and a side support part 220 surrounding the side of the filter member 300.

[0048] First, the upper support part 210 has a cylindrical shape including a second circular plate 211 having a second through hole 211' at the center and a second side wall 212. As shown in FIG.

[0049] One side of the second circular plate 211, i.e., the surface facing the cap member 100, is provided with a cylindrical first connecting member 213 having a predetermined length so that it can be tightly attached when inserted into the inner surface of the holder 114, and the other side of the second circular plate 211 is provided with a second connecting member 214 having a predetermined length so that it can be tightly attached when inserted into the fastening port 311 of the filter member 300.

[0050] Here, the first connecting member 213, the second through hole 211' and the second connecting member 214 are structured to be 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 that order. Of course, the water that has passed through the first connecting member 213 passes through the holder 114 and is then discharged through the outlet 113.

[0051] On the other hand, it is preferable that the holder 114 and the first connecting member 213 are in close contact with each other so as not to leak water, and it is more preferable that they are securely fixed together by a male-female screw fastening method or a known adhesive.

[0052] The side support part 220 has a cylindrical shape with an open interior so that the filter member 300 can be housed therein, and is provided with a plurality of slits 221 so that the water in the water bottle can flow into the filter member 300. One side of the side support part 220, i.e., the end facing the upper support part 210, is fixed to the inner surface of the second side wall 212 of the upper support part 210 by female-male screw fastening, adhesive, etc.

[0053] The filter member 300 is accommodated in the filter accommodation member 200 for the purpose of filtering out foreign matter contained in water, and includes a first sealing portion 310, a second sealing portion 320, and a filter 330.

[0054] The first sealing part 310 fixes the upper part of the filter 330 and has a fastening hole 311 formed in the center so that the above-mentioned second connecting member 214 can be inserted, thereby forming a structure that communicates with the first connecting member 213. The second sealing part 320 is located a predetermined distance away from the first sealing part 310 and fixes the lower part of the filter 330.

[0055] Here, it is preferable that the filter 330 has a wrinkled shape with a predetermined portion folded in the longitudinal direction. This is because the filter surface area per unit volume can be increased and the shape of the filter can be easily maintained. Of course, it is clear that the filter 330 has a filtered water moving passage (not shown) in the longitudinal direction at the center so that the water that flows in from the outside of the filter and passes through the filter can move to the inside of the second connecting member 214.

[0056] Fig. 9 is an enlarged view of a portion of Fig. 7 and is a cross-sectional view of the side support part and the air inflow member, and Fig. 10 is an exploded perspective view of the side support part and the air inflow member shown in Fig. 9. Fig. 11 is an enlarged perspective view of the inside of the second body constituting the air inflow member, and Fig. 12 is an enlarged perspective view of the outside of the second body constituting the air inflow member.

[0057] The air in-flow member 400 will be described in detail with reference to these FIGS.

[0058] The air inlet member 400 is for guiding air into the water bottle and is connected to the other side of the side support part 220. The air inlet member 400 includes a first body 410, a second body 420, a ball 430, a spring 440, and a packing member 450.

[0059] First, the first body 410 includes a third circular plate 411, a third connecting member 412, a first extension part 413, and a second extension part 414. The third circular plate 411 is a portion where the second sealing part 320 of the filter member described above is seated, and a third through hole 411' is formed in the center so that air that has passed through the filtered water moving passage of the filter can enter the water bottle.

[0060] The third connecting member 412 has a cylindrical shape that extends protruding a predetermined length from the center of the third circular plate 411, more specifically, from the outside of the third through hole 411' toward the filter member. The third connecting member 412 is inserted into a fastening hole (not shown) located under the filter member to fix the filter member and provide a passage for water and air to move.

[0061] The first extension portion 413 has a cylindrical shape located from the edge of the third circular plate 411 toward the filter member, and is fixed to the other side of the side support portion 220.

[0062] Here, the first extension part 413 is preferably fixed in a recessed state to the side support part 220 of the filter accommodating member, because the first extension part 413 and the side support part 220 can be firmly fixed to each other.

[0063] In addition, it is more preferable that the inner diameter of first extension portion 413 is the same as the inner diameter of side support portion 220 of the filter housing member, in order to prevent the filter member 300 housed in the filter housing member from colliding with the first extension portion 413 and to prevent the volume of the filter housing member 200 from becoming unnecessarily large.

[0064] The second extension part 414 has a cylindrical shape extending on the other side of the third circular plate 411, i.e., in a direction toward the inside of the second body 420, protruding a predetermined length, and is configured to surround the inner side wall 422 so as to be fixed in close contact with the outer surface of the inner side wall 422 described later.

[0065] The second body 420 is located on the other side of the first body 410, i.e., below the first body 410, and is hollow inside to accommodate the ball 430, the spring 440 and the packing member 450, and includes a cover 421, an inner side wall 422 and a rib 423.

[0066] First, the cover 421 forms the outer shape of the second body 420 and includes a cylindrical third side wall 421(a), a circular bottom plate 421(b), and a fourth side wall 421(c) connecting the third side wall 421(a) and the bottom plate 421(b).

[0067] Here, a portion of the upper end of third side wall 421(a) is located below first extension portion 413, while the remaining portion is located below side support portion 220 of the filter housing member. That is, the thickness of third side wall 421(a) is the same as the thickness of side support portion 220, and as a result, the outer diameter of third side wall 421(a) is the same as the outer diameter of side support portion 220, and further, the inner diameter of first extension portion 413, the inner diameter of side support portion 220, and the inner diameter of third side wall 421(a) are also the same.

[0068] With the above-mentioned configuration, not only can the side support part 220, the first body 410 and the cover 421 be firmly fixed to one another, but also the side support part 220 and the second body 420 can be regarded as an integral part.

[0069] The fourth side wall 421(c) may have an inner diameter that gradually decreases as it approaches the bottom plate 421(b). This is to make it easier to insert the air inflow member 400 into the opening of the water bottle. Reference numeral 421(c)' denotes a fifth through hole, which allows water to flow in and out of the space between the second extension 414 and the third side wall 421(a).

[0070] Meanwhile, a fourth through hole 421(b)' is formed in the circular bottom plate 421(b) so that air from the outside can enter the water bottle.

[0071] The inner side wall 422 has a cylindrical shape that extends upward from the bottom plate 421(b) by a predetermined length, and is fixed in close contact with the inner surface of the second extension portion 414.

[0072] The 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 side wall 422, and is made up of a plurality of first ribs extending in the height direction at a predetermined interval, and is radial when viewed from above. Here, the outer shape of the first rib 423(a) may be, but is not necessarily limited to, a long hexahedron or a cylinder.

[0073] This first rib 423(a) provides a path for the ball 430 and the spring 440 to move, and also prevents the ball 430 and the spring 440 from coming into close contact with the inner side wall 422, thereby providing a space S through which air can move.

[0074] Also, the second rib 423(b) is located on the inner upper surface of the bottom plate 421(b), more specifically, between the fourth through hole 421(b)' and the inner side wall 422. A plurality of bars are radially arranged to prevent the ball 430 from blocking the fourth through hole 421(b)'. Here, the second rib 423(b) may be a long hexahedron or a cylinder, similar to the first rib 423(a), but is not necessarily limited thereto.

[0075] The ball 430 moves up and down along the first rib 423(a) to open or close the third through-hole 411'. One side of the coil spring 440 is located on the top of the second rib 423(b) and the other side is disposed to support the ball 430, thereby controlling the up and down movement of the ball 430.

[0076] Reference numeral 450 denotes a packing member, which may be a circular O-ring for completely blocking water and air, but may be omitted if sufficient airtight effect can be expected from the ball 430 alone.

[0077] When the portable water bottle cover with a built-in filter having the above-mentioned structure is attached to a water bottle, when the water bottle is pressed by hand to drink water, the ball 430 closes the third through-hole 411' due to the external pressure on the water bottle and the elastic force of the spring 440, so that the water flows into the side support part 220 of the filter accommodating member 200 and is then discharged to the outside through the filter 330, the second connecting member 214, the holder 114 and the discharge port 113.

[0078] After drinking the water, the volume of the water bottle itself decreases and the internal pressure of the water bottle becomes relatively lower than the outside pressure. Therefore, outside air moves into the water bottle through the fourth through hole 421(b)' after passing through the outlet 113, the holder 114, the second connecting member 214, the filtered water movement passage of the filter 330, the third connecting member 412, and the third through hole 411' in that order, and the water bottle returns to its original volume.

[0079] Although certain parts of the contents of the present invention have been described in detail above, it will be apparent to those skilled in the art that such specific techniques are merely preferred embodiments and do not limit the scope of the present invention. Various changes and modifications are possible within the scope of the present invention and the technical spirit, and it goes without saying that such changes and modifications are also included in the scope of the appended claims. [Explanation of symbols]

[0080] 100 Cap member 110 Fixed part 111 1st Circular Plate 111' First Through Hole 112 First side wall 112' protrusion 113 Discharge port 114 Holder 120 Cap 121 Auxiliary Cap 200 Filter housing member 210 Upper support part 211 2nd Circular Plate 211' 2nd Through Hole 212 Second side wall 213 First connecting member 214 Second connecting member 220 Side support part 221 Slit 300 Filter material 310 First sealing section 311 Fastening port 320 Second sealing section 330 Filter 400 Air inlet member 410 1st fuselage 411 3rd Circular Plate 411' 3rd Through Hole 412 Third connecting member 413 1st extension 414 2nd extension 420 Second fuselage 421 Cover 421(a) Third side wall 421(b) Bottom plate 421(b)' 4th Through Hole 421(c) Fourth side wall 421(c)' 5th Through Hole 422 Inner side wall 423 Rib 423(a) 1st Rib 423(b) 2nd Rib 430 Ball 440 Spring 450 Packing material S space

Claims

1. A cap member that is removably connected to the opening of the water bottle; a filter housing member, one side of which is connected to the cap member; A filter member housed in the filter housing member and including a filter for filtering out foreign matter contained in the water in the water bottle; an air inlet member connected to the other side of the filter housing member for guiding air into the water bottle; the cap member has a cylindrical shape including a first circular plate having a first through hole and a first side wall, a discharge port protruding by a predetermined length from one side of the first circular plate, and a holder having a predetermined length and communicating with the discharge port from the other side of the first circular plate; a fixing part detachably coupled to an opening of the water bottle; and a cap connected to the fixing part for opening and closing the discharge port; the filter housing member includes an upper support part fastened to one side of the filter member, and a side support part having a cylindrical shape surrounding a side surface of the filter member and one side of which is connected to the upper support part, the upper support part has a cylindrical shape including a second circular plate having a second through hole and a second side wall, and includes a cylindrical first connecting member having a predetermined length on one side of the second circular plate so as to be in close contact with an inner surface of the holder, and a second connecting member having a predetermined length on the other side of the second circular plate, the second connecting member communicating with the second through hole and being in close contact with one side of the filter member; The side support portion has a cylindrical shape and is provided with a plurality of slits to allow water in the water bottle to pass through. The air inlet member is a first body including a third circular plate having a third through hole and a third connecting member extending to one side of the third circular plate so as to be in close contact with the other side of the filter member; a second body located on the other side of the first body and having a fourth through hole for air inflow; a ball accommodated in the second body and aligned with the fourth through hole; a spring housed within the second body and supporting the ball; the first body further includes a first extension portion located on one side edge of a third circular plate so as to be fixed to the other side of the side support portion of the filter housing member, and a second extension portion extending from the other side of the third circular plate toward an inside of the second body.

2. The cover for a portable water bottle with a built-in filter according to claim 1 , wherein the first extension portion is fixed in a recessed state to the side support portion of the filter housing member.

3. 3. The lid for a portable water bottle with a built-in filter according to claim 2, wherein an inner diameter of the first extension portion is the same as an inner diameter of the side support portion of the filter housing member.

4. The second fuselage is a cover including a cylindrical third side wall, a bottom plate having the fourth through hole formed therein, and a fourth side wall connecting the third side wall and the bottom plate; a cylindrical inner side wall located inside the cover and extending a predetermined length; a plurality of first ribs located on the inner surface of the inner side wall and extending in a height direction while being spaced apart at a predetermined interval, and a plurality of second ribs located on the inner upper surface of the bottom plate, protruding a predetermined height, and arranged radially to support one side of the spring; 2. The portable water bottle lid with built-in filter according to claim 1, wherein the ball moves up and down from an upper portion of the second rib along the first rib.

5. 5. The filter-embedded portable water bottle lid according to claim 4, wherein an upper end of the third side wall is located below the first extension.

6. the first extension portion is fixed to the side support portion of the filter accommodating member in a recessed state, and an inner diameter of the first extension portion, an inner diameter of the side support portion of the filter accommodating member, and an inner diameter of the third side wall are the same, 6. The lid for a portable water bottle with a built-in filter according to claim 5, wherein an outer diameter of the side support portion of the filter housing member is the same as an outer diameter of the third side wall.

7. 6. The filter-embedded portable water bottle cover according to claim 5, wherein the fourth side wall has an inner diameter that gradually decreases toward the bottom plate.

8. 5. The filter-embedded portable water bottle lid according to claim 4, wherein the second extension portion is positioned so as to have a shape surrounding the outside of the inner side wall.

9. 5. The portable water bottle lid with built-in filter according to claim 4, wherein the spring has a coil shape and is located between the ball and the second rib.

Images