TWI498146B - Quick change fool-proved keyed water filter assembly - Google Patents

Description

Filter device with anti-depression effect

The invention relates to a filter core structure, in particular to a filter device with a foolproof effect.

Water filtration equipment mainly uses physical or chemical methods to filter impurities in water to achieve water purification effect. To achieve different water purification effects, different types of filter cores are needed. For example, activated carbon filter can be used for simple filtration, if it is located If the water quality of the area is hard water, a combination of filter cores such as reverse osmosis can be used to obtain a cleaner water quality. Therefore, users can choose different types of filter cores according to their own needs.

The existing filter core is attached to the filter head cover at the top, and the filter head cover is fixed to the wall of the water dispenser or the wall, generally for installation and cost considerations, when the filter core needs to be replaced for a period of time, Remove the filter from the filter cap and attach it to the filter cap with a new filter.

In order to avoid misplacement of the filter core that does not meet the user's needs, and thus affect the quality of the water filter, the top of the filter core is configured with key blocks of different structures and matched with the filter head cover combined with the filter core. Providing a foolproof effect, however, the filter cores for forming different key blocks need to be manufactured by different molds and injection molding, so that the manufacturing cost is increased, and the filter core is formed by using the mold together with the injection molding, because the mold is received by the mold. open The limitation of the mode, the formed key block needs to have a certain directionality and shape, thus limiting the shape of the key block that can be formed, and the problem is actually improved.

In order to solve the problem of high filter manufacturing cost of the existing water filter, the main object of the present invention is to provide a filter device with a foolproof effect.

The present invention solves the problem of the prior art, and has a filter-proof filter device, comprising: a filter core body, comprising a card slot, the card slot is annularly recessed on the outer wall of the filter core body, And located at the top of the filter body; a card buckle is sleeved in the card slot and has radial elasticity with respect to the filter body, and the outer wall of the buckle selectively protrudes from the wall surface of the filter body And a key ring that is sleeved and circumferentially clamped on the top of the filter body and includes an inner side, an outer side, a clamping portion, and a joint portion, wherein the inner side is defined as the key ring facing the filter One side of the core body, the outer side is defined as a side of the key ring facing away from the filter body, the locking portion is annularly recessed on the inner side, the card slot is engaged, and the buckle is engaged, the combination The department is disposed on the outer side and is disposed along the circumferential direction of the key ring.

The filter device has a foolproof function, wherein the locking portion is recessed from the top end of the key ring to the inner side, and forms an abutting surface and a clamping edge, and the abutting surface abuts In the buckle, the card edge is connected to the bottom side of the abutment surface and is axially blocked by the buckle.

The filter device with a foolproof effect, wherein the key ring and The top of the filter body is circumferentially engaged with the matching groove and the rib structure.

The filter device having a foolproof effect, wherein the joint portion has a spiral structure; wherein the joint portion includes at least one rib protruding circumferentially on the outer side, wherein the rib is tapered in a circumferential direction; wherein the joint The portion includes at least one rib having a concave arc shape on the top surface; wherein the joint portion includes at least one arcuate rib opening toward one side.

The filter device has a foolproof function, wherein the key ring further comprises at least one positioning point disposed on a side of the joint portion; wherein the key ring further comprises a confirmation point protruding from the outer side and located Above the joint.

The enhancements that can be obtained by the technical means of the present invention are:

1. The key ring is replaceably formed on the top of the filter body by the card, so that the key ring with different joint structure can be matched with different kinds of filter core bodies, so the manufacturer only needs to independently design different structures. The key ring can be used, and the filter core body does not need to be additionally opened for molding, which can effectively reduce the manufacturing cost, and since the key ring and the filter core body can be separately manufactured, the key ring and the filter core body can be different according to different requirements. The material is made to achieve different functions; in addition, because the key ring can be manufactured separately, it is less susceptible to the mold opening, and it is relatively easy to design the joint of the key ring to have different directionality according to requirements. shape.

2. The anchor point of the key ring can be convexly or concavely disposed on the side of the joint portion, and the matched filter head cover can be used in use to increase the stability of the joint between the filter device and the filter head cover.

3. The confirmation point is set on the outside, and different key rings can be designed to be opposite to the The joints have different heights, which can further achieve the foolproof effect, and can be further reduced in production cost by changing the height of the confirmation point to apply different key rings.

10‧‧‧ Filter core

11‧‧‧ card slot

12‧‧‧Card Ribs

13‧‧‧One-way spacer

20‧‧‧Card buckle

30‧‧‧Key ring

31‧‧‧ inside

32‧‧‧ outside

33‧‧‧Card Department

331‧‧‧Abutment

332‧‧‧ card edge

34‧‧‧ Groove

35, 35A to 35I‧‧

341A‧‧‧ ribs

352F‧‧‧Flange

36, 36A‧‧‧ anchor points

40‧‧‧ Filter head cover

41, 41A to 41I‧‧

411A‧‧‧ ribs

412A‧‧‧stop strip

413A‧‧‧Location

414A‧‧‧ Confirmation point

415F‧‧‧ concave edge

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 2 is a partial exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a partial cross-sectional enlarged view of a preferred embodiment of the present invention.

Figure 4 is a cross-sectional view of another internal structure of the filter body.

Figure 5 is a structural view of a key ring and a filter head cover in accordance with a preferred embodiment of the present invention.

6 to 9 are flowcharts showing the installation of a buckle and a key ring according to the present invention.

10 to 11 are structural diagrams of another key ring and a filter head cover.

12 and 13 are schematic views of confirmation points of different heights.

14 to 21 are structural diagrams of the remaining different key rings and filter head covers.

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the contents of the specification, the present invention will be further described in detail with reference to the preferred embodiments as illustrated in the following: For a preferred embodiment of the filter device, please refer to FIG. 1 to FIG. 3, which includes a filter body 10, a buckle 20 and a key ring 30.

The filter body 10 is long and has a stepped structure with a tapered top. The filter body 10 includes a card slot 11 and two clamping ribs 12. The card slot 11 is annularly recessed on the filter body. The outer wall of 10, and above the stepped structure at the top of the filter body 10, between the two clamping ribs 12 The partition wall protrudes from the outer wall of the filter core body 10 along the axial direction of the filter core body 10, and is located between the stepped structure at the top of the filter core body 10 and the card slot 11.

For further reference to FIG. 4, the filter body 10 can have another different structure, and a unidirectional spacer 13 can be provided according to requirements. The unidirectional spacer 13 can be made of rubber material and disposed on the same. The inside of the filter body 10 has a function of unidirectional blocking, that is, when water passes through the unidirectional spacer 13, it has to flow in a single direction, and when it is reflowed from the other direction, it is subjected to the one-way. Blocking of the spacer 13

Referring to FIGS. 1 to 3 and FIG. 5 , the buckle 20 is sleeved at the slot 11 and has radial elasticity with respect to the filter body 10 , and the buckle 20 has a curvature greater than the card. The arc at the groove 11 or the inner diameter of the buckle 20 is larger than the outer diameter of the slot 11, whereby the outer wall of the buckle 20 can selectively partially protrude from the wall of the filter body 10. The key ring 30 is sleeved and circumferentially clamped on the top of the filter body 10. The key ring 30 includes an inner side 31, an outer side 32, a locking portion 33, two recesses 34, and a joint portion. 35 and an locating point 36, wherein the inner side 31 is defined as a side of the key ring 30 facing the filter body 10, and the outer side 32 is defined as a side of the key ring 30 facing away from the filter body 10, the card The portion 33 is formed on the inner side 31 and is located at the top of the key ring 30 and is engaged with the buckle 20 . The locking portion 33 is recessed from the top end of the key ring 30 to the inner side 31 and is formed. An abutting surface 331 and a clamping edge 332 , the abutting surface 331 abuts against the locking buckle 20 , the clamping edge 332 is connected to the bottom side of the abutting surface 331 and axially by the locking buckle 20 Stop, two concave 34 along the axial direction of the key ring 30 is provided in the inner recess 31, and the two recesses The groove 34 is respectively engaged with the two clamping ribs 12 so that the key ring 30 cannot rotate relative to the filter body 10, and the joint portion 35 is convexly disposed on the outer side 32 and has a spiral structure, and the positioning point 36 is formed in the combination. The portion 35 is formed toward the end of the top of the key ring 30 and is recessed downwardly from the top surface of the joint portion 35.

When the filter device is used, it is matched with a matching filter head cover 40, and the filter head cover 40 is mounted on the wall surface or a box body, and the inner side of the filter head cover 40 is provided with a joint portion 41 and an anchor point 52. The joint portion 41 of the filter head cover 41 is matched with the joint portion 35 of the key ring 30. The positioning point 52 of the filter head cover 40 is protruded from the inner side of the filter head cover 40 and is located at the joint portion of the filter head cover 40. Above the 41, the filter device is inserted into the filter head cover 40 from bottom to top and rotated at the same time. Since the joint portion 41 of the filter head cover 40 matches the joint portion 35 of the key ring 30, the filter core is The device can be screwed to the filter head cover 40. When the filter device is rotated to the end, the positioning point 52 of the filter head cover 40 is locked at the positioning point 36 of the key ring 30, so that the two joint portions 41 and 35 The combination can be more stable and not easy to separate.

Please refer to FIG. 6 to FIG. 9 for the installation of the buckle 20 and the key ring 30. First, the buckle 20 is sleeved downward from the top of the filter body 10, since the buckle 20 is opposite to the buckle 20 The filter body 10 has a radial elasticity, so that the buckle 20 can be slightly stretched until it is engaged at the slot 11. The buckle 20 protrudes from the slot when in the relaxed state. 11. The key ring 30 is further sleeved from the upper side of the filter body 10, and the card buckle 20 is pressed inwardly so that the card buckle 20 is completely immersed in the card slot 11, so the key The ring 30 can be pressed against the buckle 20 by its inner side 31 and When the key ring 30 is sleeved downward until the locking portion 33 is engaged with the card slot 11, the buckle 20 is stretched outwardly by its elasticity, and is partially protruded from the card. The slot 11 blocks the buckle 20 between the core body 10 and the key ring 30, so that the key ring 30 is not easily separated from the filter body 10.

Since the filter device is used with the matching filter head cover 40, the filter portion for different functions will design the joint portion 35 of the key ring 30 into different shapes, which can increase the effect of preventing and recognizing. In addition to the spiral structure, other shapes may be used. Referring to FIG. 10 to FIG. 11 , the joint portion 35A of the key ring 30 may further include three circumferential ribs 351A and two protruding positioning points 36A. The joint portion 41A of the opposite filter head cover 40 includes a three-circumferential rib 411A, a stop strip 412A, two positioning points 413A, and a confirmation point 414A, wherein the stopper strip 412A is connected to the end of the three-rib 411A. The two positioning points 413A are recessed on the top surface of the two ribs 411A, and the confirmation point 414A is protruded inside the filter head cover 40. When the filter head cover 40 is combined with the filter device, the filter device rotates to the fixed point rear stop. The stop 412A will block the rib 351A of the key ring 30, and the positioning point 36A of the key ring 30 will be locked at the positioning point 413A of the filter head cover 40, so that the combination of the filter device and the filter head cover 40 is more stable, or The structure of the joint portion 41 of the filter head cover 40 is combined with the key ring 30 Structure 35 also replaced with each other embodiments.

The confirmation point 414A serves as a reconfirmed role. Referring to FIG. 12, the confirmation point 414A can be disposed at a different height from the joint portion 41A, and the gap between the confirmation point 414A and the rib 411A can be covered by the filter head cover. When the rib 341A of 40 is inserted, it indicates the filter head cover 40 Matching with the filter device, as shown in FIG. 13, when the distance between the confirmation point 414A and the rib 411A cannot be inserted by the rib 341A of the filter head cover 40, even if the joint portion 35A of the filter head cover 40 is The structure of the joint portion 41A of the key ring 30 is matched, but it is still indicated that the filter device cannot be mounted on the filter head cover 40, and the anti-staying effect can be further achieved. The joint structure 41 and 35 of the same structure can also be used with different heights. The confirmation point 414A creates different filter head covers 40 and key rings 30, which can effectively save manufacturing costs.

Referring to FIG. 14 to FIG. 21, the joint portion 35B of the key ring 30 may also be a circumferential rib, and the joint portion 41B of the filter head cover 40 is a matching circumferential protrusion, or The joint portion 35C of the key ring 30 is a circumferentially tapered rib, the joint portion 41C of the filter head cover 40 is a matching tapered rib, or the joint portion 35D of the key ring 30 is a a rib of a trapezoidal shape, the joint portion 41D of the filter head cover 40 is a rib having a matching trapezoidal shape, or the joint portion 35E of the key ring 30 is a rib having a concave arc shape on the top surface, the filter core The joint portion 41E of the head cover 40 is a matching convex portion having a convex arc shape on the top surface, or the joint portion 35F of the key ring 30 is a protrusion, and a flange 352F is provided at the end thereof. The joint portion 41F of the core cover 40 is a bump, and the end portion thereof is correspondingly provided with a concave edge 415F, or the joint portion 35G of the key ring 30 is an arc-shaped rib with two openings upward, and the filter head cover 40 The joint portion 41G is a two-ring-shaped bump, or the joint portion 35H of the key ring 30 is two horizontal ribs, and the joint portion 41H of the filter head cover 40 is two widths. The matching ribs of the degree, or the joint portion 35I of the key ring 30 is an arc-shaped rib opening to one side, and the joint portion 41I of the filter head cover 40 is For a bump that is in a loop shape and can be embedded in the joint portion 35I of the key ring 30, regardless of the type of the joint portions 35 and 41 of the key ring 30 and the filter head cover 40, the key must be made. After the ring 30 is rotated and coupled to the filter head cover 40, the joint portions 35 and 41 of the key ring 30 and the filter head cover 40 need to be configured to extend along the circumferential direction thereof.

The key ring 30 of different structures can be independently designed to be used with different types of filter body 10, and the part of the filter body 10 does not need to be opened again, which can save cost; in addition, since the key ring 30 provides the filter core The locking function between the body 10 and the filter head cover 40 requires high hardness and is not easily deformed for support. Therefore, the key ring 30 is usually made of metal, for example, cast iron, copper, lead. a metal or an alloy such as an aluminum alloy or an aluminum-magnesium alloy, and the filter body 10 is provided with a filter material and filtered water, so that it is required to have impact resistance, elasticity, pressure resistance, and high chemical resistance. The filter body 10 is usually made of plastic, for example: polydiphenyl sulfide, polyphenol wind, polyether wind, polydiether ketone, aromatic polyester liquid crystal polymer, polyimine, polyacetal , polyamide, polycarbonate, ethylene terephthalate ethylene glycol, acrylonitrile butadiene styrene, styrene acrylic acrylonitrile, polystyrene, cellulose acetate, polyurea ester elastomer, benzene Ethylene-acrylonitrile, styrene elastomer, poly A compound such as carbonate, polytetrafluoroethylene, polypropylene, polyethylene or polyamine, since the key ring 30 and the filter body 10 can be separately manufactured, it can be easily fabricated using materials of different properties. Different functions are achieved for different needs.

10‧‧‧ Filter core

30‧‧‧Key ring

40‧‧‧ Filter head cover

41‧‧‧Combination Department

Claims (10)

A filter device having a foolproof effect, comprising: a filter core body, comprising a card slot, the card slot is annularly recessed on an outer wall of the filter core body, and located at a top of the filter core body; a card buckle, which is sleeved in the card slot and has radial elasticity with respect to the filter body, the outer wall of the buckle is selectively protruded from the wall surface of the filter body; and a key ring is sleeved And circumferentially being formed on the top of the filter body and including an inner side, an outer side, a locking portion and a joint portion, wherein the inner side is defined as a side of the key ring facing the filter core body, the outer side defining a side of the key ring facing away from the filter body, the locking portion is annularly recessed on the inner side, the card slot is engaged, and the buckle is engaged, and the joint is disposed on the outer side It is disposed along the circumferential direction of the key ring. The filter device according to claim 1, wherein the locking portion is recessed from the top end of the key ring to the inner side, and forms an abutting surface and a clamping edge. The abutment abuts against the buckle, the card edge is connected to the bottom side of the abutment surface and is axially blocked by the buckle. The filter device according to claim 2, wherein the key ring and the top of the filter body are matched with each other by a matching groove and a rib structure. The filter device according to claim 3, wherein the joint has a spiral structure. The filter device according to claim 3, wherein the joint portion comprises at least one rib protruding circumferentially on the outer side. a filter device having a foolproof effect as claimed in claim 5, wherein the rib The article is gradually shrinking. The filter device according to claim 3, wherein the joint portion comprises at least one rib having a concave arc shape on the top surface. The filter device according to claim 3, wherein the joint portion comprises at least one arcuate rib opening toward one side. The filter device according to any one of claims 1 to 8, wherein the key ring further comprises at least one positioning point disposed on a side of the joint. The filter device according to claim 9, wherein the key ring further comprises a confirmation point protruding from the outer side and above the joint portion.