CN216825065U - Front-mounted water purifier - Google Patents

Abstract

The utility model discloses a leading water purifier, including the filter core with be used for installing the aircraft nose of filter core, the aircraft nose includes the filter core seat, rotates the locking ring of connection on the filter core seat, first elastic component and knob, the locking ring has locking position and unblock position, is equipped with the push rod on the locking ring, the knob is equipped with the promotion arch of eccentric settings towards the one end of locking ring, promotes the arch and rotates and promote the push rod along with the knob to make the push rod drive the locking ring and rotate to unblock position by locking position. The utility model discloses a tip eccentric settings at the knob promotes the arch for when the user does not rotate the knob, the locking ring stops in locking position with the locking filter core, if the user rotates the knob, so that promote the arch and rotate and promote the push rod along with the knob, make the locking ring rotate to the unblock position by locking position, realize the dismantlement of filter core. The user only needs to rotate the knob promptly and can realize the unblock between filter core and the aircraft nose, need not to rotate the filter core or with the help of the instrument, and is more laborsaving, the dismantlement of the filter core of being convenient for is changed.

Description

Front-mounted water purifier

Technical Field

The utility model belongs to the water purifier field, concretely relates to leading water purifier.

Background

Leading water purifier settles the purifier on the water pipe, intercepts silt, iron rust large granule impurity through the filter core of establishing in to prevent that these impurity from getting into in the domestic appliance influence its life. Because the filter core has certain life, so need regularly change the filter core, however, present filter core adopts the mode of turnbuckle or screw thread to install usually, need to twist the filter core by hand or change the filter core with the help of instruments such as spanner when changing, because the filter core is bulky and comparatively heavy, so change very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a preposed water purifier is provided to solve at least one of the above problems.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a leading water purifier, include the filter core and the aircraft nose that is used for installing the filter core, the aircraft nose includes the filter core seat, rotate the locking ring of connection on the filter core seat, first elastic component and knob, the locking ring has under first elastic component promotes with the locking position of filter core locking on the filter core seat and supplies the filter core to follow the unblock position of declutch on the filter core seat, be equipped with the push rod on the locking ring, the knob is equipped with the promotion arch of eccentric setting towards the one end of locking ring, it rotates and promotes the push rod along with the knob to promote the arch, so that the push rod drives the locking ring and rotates to the unblock position by the locking position.

In the above-mentioned leading water purifier, promote bellied peripheral face and the lateral part of push rod and offset, promote bellied peripheral face and be equipped with the constant head tank, when the locking ring is in the unblock position, the lateral part joint of push rod is in the constant head tank to prevent the locking ring free rotation to the locking position under the promotion of first elastic component.

In the above-mentioned leading water purifier, promote protruding outer peripheral face to be equipped with the location bump, form the constant head tank between location bump and the protruding outer peripheral face of promotion.

In the above-mentioned leading water purifier, the promotion arch is the disk type cam of terminal surface fixed on the knob, and the camshaft of disk type cam is parallel with the pivot of knob.

In the above-mentioned leading water purifier, be equipped with the arch that resets on the locking ring, be equipped with on the filter core seat and supply the protruding gliding groove that resets of resetting, first elastic component locates the inslot that resets, and the both ends of first elastic component offset with the inner wall in protruding and the groove that resets of resetting respectively.

In the above-mentioned leading water purifier, the aircraft nose includes bottom plate and last casing, goes up the casing lid and closes on the bottom plate in order to form the chamber that holds the locking ring, is equipped with the mounting hole on the lateral wall of going up the casing, and the knob is worn to establish on last casing through the mounting hole level, and the knob is including being located the promotion end that holds the intracavity and passing the mounting hole and stretch out the operation end of going up the casing, promotes on protruding the terminal surface of locating the promotion end.

In the preposed water purifier, the end surface of the pushing end is provided with the elastic positioning mechanism, the bottom plate is provided with the baffle plate positioned at the side part of the pushing end, the baffle plate is provided with the locking groove and the unlocking groove, and the elastic positioning mechanism is clamped in the locking groove when the locking ring is positioned at the locking position; when the locking ring is located at the unlocking position, the elastic positioning mechanism is clamped in the unlocking groove.

In above-mentioned leading water purifier, be equipped with the installation pipe on the terminal surface of promotion end, elastic positioning mechanism is including locating marble and the second elastic component in the installation pipe, and the both ends of second elastic component offset with promotion end and marble respectively to promote the marble and stretch into locking groove or unlock inslot.

In above-mentioned leading water purifier, be equipped with the installation arch that encircles the mounting hole setting on the inside wall of last casing, be equipped with the guide way on the installation arch, be equipped with the direction arch on the lateral wall of knob, direction arch sliding connection is in order to restrict the turned angle of knob in the guide way.

In the above-mentioned front water purifier, the outer peripheral side of the head of the filter element is provided with a plurality of positioning protrusions, the bottom plate is provided with a through hole concentrically arranged with the locking ring, the inner walls of the through hole and the locking ring are respectively provided with a plurality of first limiting grooves and second limiting grooves, and the locking ring rotates to enable the first limiting grooves and the second limiting grooves to coincide or stagger in the vertical direction, so that the positioning protrusions pass through or lock the positioning protrusions in the accommodating cavity.

The utility model has the advantages that:

the utility model provides a leading water purifier, include the filter core and the aircraft nose that is used for installing the filter core, the aircraft nose includes the filter core seat, rotate the locking ring of connection on the filter core seat, first elastic component and knob, the locking ring has under the promotion of first elastic component with the locking position of filter core locking on the filter core seat and supply the unblock position that the filter core declutched from the filter core seat, be equipped with the push rod on the locking ring, the knob is equipped with the promotion arch of eccentric settings towards the one end of locking ring, it rotates and promotes the push rod along with the knob to promote the arch, so that the push rod drives the locking ring and rotates to the unblock position by locking position. The technical scheme has the following technical effects:

the utility model discloses a tip eccentric settings at the knob promotes the arch, make the user not when rotating the knob, first elastic component pushes the locking ring under the effect of elastic force, make the locking ring stop in the locking position, in order to lock the filter core on the filter core seat, if the user need dismantle the filter core, then rotate the knob, so that promote the arch and rotate and promote the push rod along with the knob, the push rod drives the locking ring and rotates, make the locking ring rotate to the unblock position by the locking position, the locking ring no longer carries on spacingly to the filter core this moment, the filter core can be thrown off from the aircraft nose, realize the dismantlement of filter core. The user only needs to rotate the knob promptly and can realize the unblock between filter core and the aircraft nose, need not to rotate the filter core or with the help of the instrument, and is more laborsaving, and the dismantlement of the filter core of being convenient for is changed, reduces the change degree of difficulty of filter core, improves the change efficiency of filter core, promotes user's use and experiences.

The outer peripheral surface of the pushing bulge is abutted against the side portion of the push rod, a positioning groove is formed in the outer peripheral surface of the pushing bulge, and when the locking ring is located at the unlocking position, the side portion of the push rod is clamped in the positioning groove to prevent the locking ring from freely rotating towards the locking position under the pushing of the first elastic piece. When the locking ring is in the unblock position, the lateral part joint of push rod is in the constant head tank, the pushing force of first elastic component is not enough with the push rod by pushing out in the constant head tank, can prevent the locking ring to locking position free rotation under the promotion of first elastic component, be about to the locking ring stop in the unblock position, make the user can loosen the knob, the both hands carry out the dismantlement and the installation of filter core, when new filter core installation finishes, the user only needs to apply a great power to the knob in order to push out the push rod by the constant head tank in, then the locking ring can rotate to locking position under the promotion of first elastic component, in order to lock the filter core.

Promote to be equipped with the location bump on the bellied outer peripheral face, location bump and promote to form the constant head tank between the bellied outer peripheral face, namely the user only need cross the location bump, can realize the throw off between push rod and the constant head tank, and user operation is more laborsaving.

The pushing bulge is a disc-shaped cam with the end surface fixed on the knob, and a cam shaft of the disc-shaped cam is parallel to a rotating shaft of the knob. Through will promoting the arch and set up to the disc cam for promote the arch and need not great volume, can realize carrying out remote promotion to the push rod when the knob rotates, reduce and promote bellied occupation space, dwindle the volume of aircraft nose promptly, be convenient for transport, take and install.

The locking ring is provided with a reset protrusion, the filter element base is provided with a reset groove for the reset protrusion to slide, the first elastic piece is arranged in the reset groove, and two ends of the first elastic piece respectively abut against the reset protrusion and the inner wall of the reset groove, so that the locking ring is prevented from freely rotating or excessively rotating under the pushing of the first elastic piece to cause the push rod to be disengaged from the pushing protrusion, and the stability of transmission between the knob and the locking ring is ensured.

The aircraft nose includes bottom plate and last casing, goes up the casing lid and closes on the bottom plate in order to form the chamber that holds the locking ring, is equipped with the mounting hole on the lateral wall of going up the casing, and the knob is worn to establish on last casing through the mounting hole level, and the knob is including being located the promotion end that holds the intracavity and passing the mounting hole and stretch out the operation end of going up the casing, promotes the arch and locates on the terminal surface of promotion end. Through hiding the locking ring and promoting protruding isotructure in holding the intracavity, protect the locking ring and promote protruding isotructure, guarantee the transmission between locking ring and the knob stable, make the aircraft nose more pleasing to the eye simultaneously.

The end face of the pushing end is provided with an elastic positioning mechanism, the bottom plate is provided with a baffle plate positioned on the side part of the pushing end, the baffle plate is provided with a locking groove and an unlocking groove, and when the locking ring is positioned at a locking position, the elastic positioning mechanism is clamped in the locking groove; when the locking ring is located at the unlocking position, the elastic positioning mechanism is clamped in the unlocking groove. Through the joint of elastic positioning mechanism and locking groove or unblock groove, give user's knob and rotate feeling and the voice prompt that targets in place, the user of being convenient for operates, improves user's use and experiences.

Be equipped with the installation pipe on the terminal surface of promotion end, elastic positioning mechanism is including locating marble and the elastic component in the installation pipe, and the both ends of elastic component offset with promotion end and marble respectively to promote in the marble stretches into locking groove or the unlocking groove, simple structure, the operation is reliable and stable.

The inner side wall of the upper shell is provided with an installation bulge arranged around the installation hole, the installation bulge is provided with a guide groove, the side wall of the knob is provided with a guide bulge, and the guide bulge is connected with the guide groove in a sliding manner so as to limit the rotation angle of the knob. The rotation angle of the knob is limited through the matching between the guide protrusions and the guide grooves, the phenomenon that the locking ring cannot stop at the unlocking position due to the fact that the angle of the knob is too large when a user rotates the knob is avoided, or the knob is prevented from rotating too far due to the fact that the push protrusions on the knob are pushed by the push rod.

The periphery side of the head of the filter element is provided with a plurality of positioning bulges, the bottom plate is provided with a through hole which is concentric with the locking ring, the inner walls of the through hole and the locking ring are respectively provided with a plurality of first limiting grooves and second limiting grooves, the locking ring enables the first limiting grooves and the second limiting grooves to be overlapped or staggered in the vertical direction through rotation, so that the positioning bulges can pass through or be locked in the accommodating cavity, the structure is simple, the production is easy, and the operation is stable and reliable.

The features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

FIG. 1 is a perspective view of a front water purifier according to the present invention;

FIG. 2 is an exploded view of a front water purifier according to the present invention;

FIG. 3 is a perspective view of the upper housing;

FIG. 4 is a partial cross-sectional view of the upper housing;

figure 5 is a perspective view of a locking ring;

FIG. 6 is a perspective view of the knob;

FIG. 7 is a perspective view of the base plate;

FIG. 8 is a schematic view in partial cutaway of a pre-mounted water conditioner with the locking ring in the locked position;

FIG. 9 is a cutaway schematic view of the pre-purifier with the locking ring in the locked position;

FIG. 10 is a schematic view in partial cross-section of the front mounted water conditioner with the locking ring in the unlocked position;

fig. 11 is a cutaway schematic view of the front mounted water conditioner with the locking ring in the unlocked position.

Reference numerals:

100. a filter element seat; 110. an upper housing; 111. mounting holes; 112. mounting a boss; 1121. a guide groove; 113. annular positioning convex ribs; 114. a reset groove; 120. a base plate; 121. a baffle plate; 1211. a locking groove; 1212. unlocking the groove; 122. a through hole; 1221. a first limit protrusion; 1222. a first limit groove; 123. mounting a bracket; 130. an accommodating chamber;

210. locking a ring; 211. an annular limiting convex rib; 212. a reset protrusion; 220. a push rod; 221. a strip-shaped convex rib; 230. a second limit bulge; 240. a second limit groove;

300. a knob; 310. an operation end; 320. a pushing end; 321. installing a pipe; 330. pushing the projection; 331. positioning a groove; 332. positioning the salient points; 340. a guide projection;

400. a first elastic member;

500. an elastic positioning mechanism; 510. a marble; 520. a second elastic member;

600. a filter element; 610. and a positioning projection.

Detailed Description

The utility model provides a leading water purifier, include the filter core and be used for installing the aircraft nose of filter core, the aircraft nose includes the filter core seat, rotate the locking ring of connection on the filter core seat, first elastic component and knob, the locking ring has under the promotion of first elastic component with the locking position of filter core locking on the filter core seat and supply the filter core from the unlocking position that the filter core seat was thrown off, be equipped with the push rod on the locking ring, the knob is equipped with the promotion arch of eccentric settings towards the one end of locking ring, it rotates and promotes the push rod along with the knob to promote the arch, so that the push rod drives the locking ring and rotates to the unlocking position by locking position. The utility model discloses a tip eccentric settings at the knob promotes the arch, make the user when not rotating the knob, first elastic component pushes the locking ring under the effect of elasticity, make the locking ring stop in the locking position, in order to lock the filter core on the filter core seat, if the user needs to dismantle the filter core, then rotate the knob, so that promote protruding along with the knob rotation and promote the push rod, the push rod drives the locking ring and rotates, make the locking ring rotate to the unblock position by the locking position, the locking ring is no longer spacing to the filter core this moment, the filter core can be thrown off from the aircraft nose, realize the dismantlement of filter core. The user only needs to rotate the knob promptly and can realize the unblock between filter core and the aircraft nose, need not to rotate the filter core or with the help of the instrument, and is more laborsaving, and the dismantlement of the filter core of being convenient for is changed, reduces the change degree of difficulty of filter core, improves the change efficiency of filter core, promotes user's use and experiences.

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example (b):

a front water purifier, as shown in fig. 1 to 11, comprises a machine head and a filter element 600 mounted on the machine head, wherein the machine head comprises a filter element base 100 for connecting a water conveying pipeline, a locking ring 210 rotatably connected on the filter element base 100, a knob 300 for controlling the rotation of the locking ring 210 and a first elastic member 400, and the first elastic member 400 respectively abuts against the filter element base 100 and the locking ring 210 to push the locking ring 210 to reset. The locking ring 210 is provided with a push rod 220 for driving the locking ring 210 to rotate, one end of the knob 300 facing the locking ring 210 is provided with a push protrusion 330, and the push protrusion 330 is eccentrically arranged, so that when the knob 300 rotates, the push protrusion 330 moves along with the rotation of the knob 300, so as to push the push rod 220 in the horizontal direction, and the push rod 220 drives the locking ring 210 to rotate. The locking ring 210 has a locking position and an unlocking position, and when the knob 300 is not rotated by a user, the first elastic member 400 pushes the locking ring 210 under the elastic force, so that the locking ring 210 stays at the locking position to lock the filter cartridge 600 to the filter cartridge holder 100; when the user rotates the knob 300, the pushing protrusion 330 rotates with the knob 300 and pushes the pushing rod 220, the pushing rod 220 drives the locking ring 210 to rotate, so that the locking ring 210 rotates from the locking position to the unlocking position, at this time, the locking ring 210 no longer limits the filter cartridge 600, and the filter cartridge 600 can be detached from the handpiece.

The utility model discloses a tip eccentric settings at knob 300 promotes protruding 330, when making the user not rotate knob 300, first elastic component 400 pushes away lock ring 210 under the effect of elastic force, make lock ring 210 stop in the locking position, in order to lock filter core 600 on filter core seat 100, if the user needs to dismantle filter core 600, then rotate knob 300, so that it rotates and promotes push rod 220 along with knob 300 to promote protruding 330, push rod 220 drives lock ring 210 and rotates, make lock ring 210 rotate to the unlocking position by the locking position, lock ring 210 no longer carries on spacingly to filter core 600 this moment, filter core 600 can throw off from the aircraft nose, realize the dismantlement of filter core 600. That is to say, the user only needs to rotate knob 300 and can realize the unblock between filter core 600 and the aircraft nose, need not to rotate filter core 600 or with the help of the instrument, and is more laborsaving, and the dismantlement of the filter core 600 of being convenient for is changed, reduces the change degree of difficulty of filter core 600, improves filter core 600's the change efficiency, promotes user's use and experiences.

In this embodiment, the pushing protrusion 330 includes a mounting surface and a free surface respectively located at two ends of the pushing protrusion 330, and an outer circumferential surface located between the mounting surface and the free surface and surrounding the outer circumferential sides of the mounting surface and the free surface, the outer circumferential surface is a curved surface, the pushing protrusion 330 is fixed at the end of the knob 300 through the mounting surface, the outer circumferential surface of the pushing protrusion 330 abuts against the side portion of the push rod 220 for pushing the push rod 220, a positioning groove 331 is provided on the outer circumferential surface of the pushing protrusion 330, when the locking ring 210 is at the unlocking position, the side portion of the push rod 220 is clamped in the positioning groove 331, the pushing force of the first elastic member 400 is not enough to push the push rod 220 out of the positioning groove 331, that is, the locking ring 210 is prevented from freely rotating towards the locking position under the pushing of the first elastic member 400, i.e. the locking ring 210 stays at the unlocking position, so that a user can release the knob 300 and detach and install the filter element 600 with two hands, when the new filter cartridge 600 is installed, the user only needs to apply a large force to the knob 300 to push the push rod 220 out of the positioning groove 331, and then the locking ring 210 can be rotated toward the locking position by the first elastic member 400 to lock the filter cartridge 600. Preferably, as shown in fig. 6, a positioning protrusion 332 is disposed on the outer peripheral surface of the pushing protrusion 330, and a positioning groove 331 is formed between the positioning protrusion 332 and the outer peripheral surface of the pushing protrusion 330, that is, a user only needs to go over the positioning protrusion 332 to disengage the pushing rod 220 from the positioning groove 331, which is more labor-saving for the user to operate.

The preferred of this embodiment is, promote protruding 330 for the terminal surface fixes the disk type cam on knob 300, the camshaft of disk type cam is parallel and not coincident with the pivot of knob 300, through will promoting protruding 330 and set up to the disk type cam for promote protruding 330 and need not great volume, can realize carrying out remote promotion to push rod 220 when knob 300 rotates, reduce the occupation space who promotes protruding 330, reduce the volume of aircraft nose promptly, be convenient for transportation, take and install.

As shown in fig. 2, in the present embodiment, the filter cartridge holder 100 includes a bottom plate 120 and an upper housing 110, the upper housing 110 is covered on the bottom plate 120 to form an accommodating chamber 130, a locking ring 210 is disposed in the accommodating chamber 130 between the upper housing 110 and the bottom plate 120, as shown in fig. 3, a mounting hole 111 is provided on a sidewall of the upper housing 110, and a knob 300 is horizontally inserted through the upper housing 110 through the mounting hole 111. The knob 300 includes a pushing end 320 and an operating end 310, the pushing end 320 is located in the accommodating cavity 130, the pushing protrusion 330 is disposed on an end surface of the pushing end 320, the operating end 310 passes through the mounting hole 111 and extends out of the upper housing 110 for being held by a user, and the user can drive the pushing end 320 and the pushing protrusion 330 disposed on the pushing end 320 to rotate by rotating the operating end 310, so that the pushing protrusion 330 pushes the pushing rod 220. By hiding the locking ring 210 and the pushing protrusion 330 in the accommodating cavity 130, the locking ring 210 and the pushing protrusion 330 are protected, the transmission stability between the locking ring 210 and the knob 300 is ensured, and the machine head is more attractive.

The upper housing 110 is provided with an annular positioning rib 113 extending toward the accommodating cavity 130, the top surface of the locking ring 210 abuts against the bottom of the annular positioning rib 113, the bottom surface of the locking ring 210 abuts against the bottom plate 120, the top surface of the locking ring 210 is further provided with an annular limiting rib 211, and the outer circumferential surface of the annular limiting rib 211 abuts against the inner circumferential surface of the annular positioning rib 113 to limit the locking ring 210 in the horizontal and vertical directions, so that the push rod 220 at the side of the locking ring 210 is prevented from being disengaged from the push protrusion 330, which results in the failure of transmission between the knob 300 and the locking ring 210. In order to reduce the wear between the push rod 220 and the locking ring 210, it is preferable that a strip-shaped rib 221 abutting against the top surface of the locking ring 210 is provided at the bottom of the push rod 220.

As shown in fig. 4 and 5, in order to prevent the locking ring 210 from rotating freely or rotating excessively under the pushing of the first elastic member 400 to disengage the push rod 220 from the push protrusion 330, and ensure the stability of the transmission between the knob 300 and the locking ring 210, in this embodiment, a reset protrusion 212 is provided on the top surface of the locking ring 210, a reset groove 114 facing the locking ring 210 is provided at the bottom of the upper housing 110, the push protrusion 330 is inserted in the reset groove 114 and can slide along the reset groove 114, the rotation angle of the locking ring 210 is limited by the reset groove 114, the first elastic member 400 is provided in the reset groove 114, and both ends of the first elastic member 400 respectively abut against the reset protrusion 212 and the inner wall of the reset groove 114, when the locking ring 210 is in the locking position, the first elastic member 400 pushes the reset protrusion 212 to abut against the inner wall of the sliding groove far from one end of the first elastic member 400, and when the locking ring 210 rotates from the locking position to the unlocking position, the restoring protrusion 212 moves toward the end of the slide groove where the first elastic member 400 is provided and presses the first elastic member 400.

The end face of the pushing end 320 of the knob 300 in this embodiment is provided with the elastic positioning mechanism 500, the bottom plate 120 is provided with the baffle plate 121 perpendicular to the bottom plate 120, the baffle plate 121 is located at the side of the pushing end 320, the baffle plate 121 is provided with the locking groove 1211 and the unlocking groove 1212, when the locking ring 210 is located at the locking position, the elastic positioning mechanism 500 is clamped in the locking groove 1211, and when the locking ring 210 is located at the unlocking position, the elastic positioning mechanism 500 is clamped in the unlocking groove 1212. Through the clamping connection of the elastic positioning mechanism 500 and the locking groove 1211 or the unlocking groove 1212, the hand feeling and the sound prompt of the user when the knob 300 rotates in place are given, the operation of the user is convenient, and the use experience of the user is improved. Preferably, a mounting tube 321 is disposed on an end surface of the pushing end 320, the elastic positioning mechanism 500 includes a ball 510 and a second elastic member 520 disposed in the mounting tube 321, both ends of the second elastic member 520 respectively abut against the pushing end 320 and the ball 510 to push the ball 510 to extend into the locking groove 1211 or the unlocking groove 1212, and when the elastic positioning mechanism 500 moves between the locking groove 1211 and the unlocking groove 1212, the ball 510 abuts against the stop plate 121 to prevent the ball 510 from being disengaged from the mounting tube 321.

The present embodiment is provided with an installation protrusion 112 surrounding the installation hole 111 on the inner side wall of the upper housing 110, the installation protrusion 112 supports the knob 300, and prevents the knob 300 from shaking, the installation protrusion 112 is provided with a guide groove 1121, the outer side wall of the knob 300 is provided with a guide protrusion 340, the guide protrusion 340 is slidably connected in the guide groove 1121, the rotation angle of the knob 300 is limited by the cooperation between the guide protrusion 340 and the guide groove 1121, so as to prevent the user from rotating the knob 300 by an excessively large angle, which results in that the locking ring 210 cannot stay at the unlocking position, or the push protrusion 330 on the knob 300 is pushed by the push rod 220 to cause the knob 300 to rotate over-position. In order to further enhance the supporting effect of the knob 300, a mounting bracket 123 for supporting the knob 300 is further provided on the base plate 120, and the mounting bracket 123 is located between the baffle 121 and the mounting protrusion 112.

In this embodiment, a plurality of positioning protrusions 610 are formed around the outer circumference of the head of the filter element 600, the plurality of positioning protrusions 610 are equally spaced, the bottom plate 120 is provided with a through hole 122, the inner diameter of the through hole 122 is the same as that of the locking ring 210, the through hole 122 is coaxially disposed with the locking ring 210, the inner wall of the through hole 122 is provided with a plurality of first stopper grooves 1222 equally spaced, the first stopper groove 1222 is disposed around the central axis of the through hole 122, the inner wall of the locking ring 210 is provided with a plurality of second stopper grooves 240 equally spaced, the second stopper grooves 240 are disposed around the central axis of the locking ring 210, the first stopper grooves 1222 axially penetrate the inner wall of the through hole 122, the second stopper grooves 240 axially penetrate the inner wall of the locking ring 210, and the widths and the numbers of the first stopper grooves 1222 and the second stopper grooves 240 are equal. The locking ring 210 can be rotated to make the first and second limiting grooves 1222 and 240 vertically coincide or be staggered, when the locking ring 210 is in the unlocking position, the first and second limiting grooves 1222 and 240 vertically coincide to allow the positioning protrusion 610 of the head of the filter cartridge 600 to pass through, and when the locking ring 210 is in the locking position, the first and second limiting grooves 1222 and 240 vertically are staggered to prevent the positioning protrusion 610 from passing through, thereby preventing the head of the filter cartridge 600 from being detached from the head. Simple structure easily produces, and the operation is reliable and stable. In this embodiment, it is preferable that the first limiting protrusions 1221 are disposed on the inner wall of the through hole 122, the first limiting groove 1222 is a gap between two adjacent first limiting protrusions 1221, the second limiting protrusion 230 is disposed on the inner wall of the locking ring 210, and the second limiting groove 240 is a gap between two adjacent second limiting protrusions 230.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a leading water purifier, includes filter core and the aircraft nose that is used for installing the filter core, its characterized in that: the machine head comprises a filter element seat, a locking ring rotatably connected to the filter element seat, a first elastic piece and a knob, the locking ring is provided with a locking position for locking the filter element on the filter element seat and an unlocking position for enabling the filter element to be separated from the filter element seat under the pushing of the first elastic piece, a push rod is arranged on the locking ring, one end of the knob, facing the locking ring, is provided with an eccentrically arranged pushing bulge, and the pushing bulge rotates along with the knob and pushes the push rod so that the push rod drives the locking ring to rotate from the locking position to the unlocking position.

2. The front water purifier according to claim 1, characterized in that: the outer peripheral surface of the pushing bulge abuts against the side portion of the push rod, a positioning groove is formed in the outer peripheral surface of the pushing bulge, and when the locking ring is located at the unlocking position, the side portion of the push rod is clamped in the positioning groove so as to prevent the locking ring from freely rotating towards the locking position under the pushing of the first elastic piece.

3. The front water purifier according to claim 2, characterized in that: the positioning convex points are arranged on the peripheral surface of the pushing bulge, and the positioning grooves are formed between the positioning convex points and the peripheral surface of the pushing bulge.

4. The front water purifier according to claim 2, wherein: the push bulge is a disc-shaped cam with the end face fixed on the knob, and a cam shaft of the disc-shaped cam is parallel to a rotating shaft of the knob.

5. The front water purifier according to claim 1, characterized in that: the filter element comprises a locking ring, a filter element seat and a first elastic piece, wherein a reset protrusion is arranged on the locking ring, a reset groove for the reset protrusion to slide is formed in the filter element seat, the first elastic piece is arranged in the reset groove, and two ends of the first elastic piece are respectively abutted against the reset protrusion and the inner wall of the reset groove.

6. The front water purifier according to any one of claims 1 to 5, characterized in that: the handpiece comprises a bottom plate and an upper shell, the upper shell covers the bottom plate to form an accommodating cavity for accommodating the locking ring, a mounting hole is formed in the side wall of the upper shell, the knob horizontally penetrates through the upper shell through the mounting hole, the knob comprises a pushing end located in the accommodating cavity and an operating end penetrating through the mounting hole and extending out of the upper shell, and the pushing protrusion is arranged on the end face of the pushing end.

7. The front water purifier according to claim 6, characterized in that: the end face of the pushing end is provided with an elastic positioning mechanism, the bottom plate is provided with a baffle plate positioned on the side part of the pushing end, the baffle plate is provided with a locking groove and an unlocking groove, and when the locking ring is positioned at a locking position, the elastic positioning mechanism is clamped in the locking groove; when the locking ring is located at the unlocking position, the elastic positioning mechanism is clamped in the unlocking groove.

8. The front water purifier according to claim 7, wherein: the end face of the pushing end is provided with a mounting pipe, the elastic positioning mechanism comprises a marble and a second elastic piece, the marble and the second elastic piece are arranged in the mounting pipe, two ends of the second elastic piece respectively abut against the pushing end and the marble to push the marble to stretch into the locking groove or the unlocking groove.

9. The front water purifier according to claim 6, characterized in that: the inner side wall of the upper shell is provided with an installation bulge surrounding the installation hole, the installation bulge is provided with a guide groove, the side wall of the knob is provided with a guide bulge, and the guide bulge is slidably connected in the guide groove to limit the rotation angle of the knob.

10. The front water purifier according to claim 6, wherein: the outer peripheral side of the head of the filter element is provided with a plurality of positioning bulges, the bottom plate is provided with a through hole which is concentric with the locking ring, the through hole and the inner wall of the locking ring are respectively provided with a plurality of first limiting grooves and second limiting grooves, and the locking ring rotates to enable the first limiting grooves and the second limiting grooves to be overlapped or staggered in the vertical direction so as to enable the positioning bulges to pass through or lock the positioning bulges in the accommodating cavity.

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