Drawing mechanism and water outlet device using same

Abstract

The invention discloses a pulling mechanism and a water outlet device applying the pulling mechanism, and the pulling mechanism comprises a shell, a water inlet, a water outlet and a water outlet, the shaft rod is fixed on the shell; the shaft rod is sleeved with the pipe winding wheel. A hose is spirally wound on the hose winding wheel in the axial direction of the hose winding wheel, a part of hose section of the hose is separated from the hose winding wheel and penetrates through the hose outlet in a telescopic moving mode, and when the hose is pulled away from and rewound on the hose winding wheel, the hose winding wheel can rotate forwards and reversely relative to the shaft rod and synchronously translate in the axial direction of the shaft rod in a reciprocating mode. The relative position of the starting position of the hose section, separated from the hose winding wheel, of the hose and the hose outlet is kept unchanged; in the process that the hose is pulled out or rewound relative to the hose outlet, the hose winding wheel can rotate and translate in the corresponding direction along with the hose winding wheel, so that the relative position of the initial position of the hose section, separated from the hose winding wheel, of the hose and the hose outlet is kept unchanged, and the formed friction force is kept relatively stable; and therefore, the process of drawing the hose by a user is very smooth, and the drawing hand feeling is comfortable.

Description

Pull-out mechanism and water outlet device using it Technical Field

[0001] This invention relates to the field of water-using equipment technology, and in particular to a pull-out mechanism and a water outlet device using the same. Background Technology

[0002] Some existing pull-out faucets are pre-installed in walls or bathtubs. The faucet hose can be pulled out for use and retracted for concealment. Some hose storage methods involve winding the hose along a storage axis. During use, it has been found that with this storage structure, the hose's position relative to the storage axis changes during hose extension or retraction, causing the hose's relative position to the faucet's outlet to constantly shift. This means the hose cannot maintain a consistent position with the outlet, resulting in fluctuating friction between the hose and the outlet, affecting the smoothness of hose extension and retraction and impacting the user's handling experience. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a pull-out mechanism.

[0004] To achieve the above objectives, the technical solution of the present invention is as follows:

[0005] The present invention also proposes a water outlet device having the above-mentioned pull-out mechanism.

[0006] A pull-out mechanism according to a first aspect embodiment of the present invention includes:

[0007] A housing, wherein the housing is provided with an outlet;

[0008] A shaft, which is fixed to the housing;

[0009] A tube-winding wheel, which is sleeved on the shaft;

[0010] A flexible hose is spirally wound around a reel along its axial direction. A portion of the hose detaches from the reel and is telescopically inserted into the outlet. When the hose is withdrawn from and rewound to the reel, the reel can rotate in both directions relative to the shaft and simultaneously reciprocate along the shaft's axial direction, so that the relative position between the starting position of the hose segment detached from the reel and the outlet remains unchanged.

[0011] The pull-out mechanism according to the embodiments of the present invention has at least the following beneficial effects: during the process of pulling out or rewinding the hose relative to the outlet, the winding wheel can rotate and translate in the corresponding direction, so that the relative position between the starting position of the hose segment detached from the winding wheel and the outlet remains unchanged, so that the friction force formed remains relatively stable, thereby making the process of pulling out the hose very smooth and comfortable for the user.

[0012] According to some embodiments of the present invention, the shaft is provided with a guide thread, and the tube winding wheel is threadedly connected to the shaft through the guide thread, wherein the pitch of the guide thread is the same as the outer diameter of the hose.

[0013] According to some embodiments of the present invention, the tube winding wheel is provided with a guide groove extending spirally along the axial direction, and the hose is wound around the tube winding wheel through the guide groove.

[0014] According to some embodiments of the present invention, a connecting seat is further included, which is positioned opposite one end of the winding wheel, and an anti-rotation structure is provided between the winding wheel and the connecting seat, which can apply resistance to the winding wheel to prevent its rotation.

[0015] According to some embodiments of the present invention, the connecting seat is made of metal, at least a portion of the seat body of the connecting seat is coaxially arranged with the winding wheel, the anti-rotation structure includes a magnet, and a plurality of the magnets are installed on one end of the winding wheel near the connecting seat.

[0016] According to some embodiments of the present invention, the portion of the connecting seat facing the winding wheel is a cylindrical conductive part, and the end of the winding wheel near the connecting seat is a hollow cylindrical first end, the inner diameter of the first end being larger than the outer diameter of the conductive part, and a plurality of magnets are distributed circumferentially on the inner wall of the first end.

[0017] According to some embodiments of the present invention, the anti-rotation structure includes a damping ring and an elastic element. The portion of the connecting seat facing the winding wheel is a cylindrical conductive part. The damping ring is sleeved on the conductive part and can move axially relative to the conductive part. The elastic element applies an elastic force to the damping ring, causing it to move closer to the winding wheel. The end of the winding wheel near the connecting seat is a hollow cylindrical first end. The first end is sleeved onto or away from the damping ring as the winding wheel translates axially.

[0018] According to some embodiments of the present invention, a reset mechanism is further included, which is connected to the winding wheel. The reset mechanism applies a gradual elastic rotational force to the winding wheel, which drives the winding wheel to rotate in the direction of rewinding the hose.

[0019] According to some embodiments of the present invention, the reset mechanism includes a fixed seat, a sliding sleeve, and a coil spring. The fixed seat is fixed to the end of the winding tube wheel. The sliding sleeve is rotatably mounted on the fixed seat. The coil spring is sleeved on the sliding sleeve. Both ends of the coil spring are connected to the fixed seat and the sliding sleeve, respectively. The shaft is provided with a sliding groove opened along the axial direction. The shaft passes coaxially through the sliding sleeve. The sliding sleeve and the sliding groove are slidably connected relative to each other.

[0020] According to some embodiments of the present invention, an adapter is also included, wherein the connecting seat is provided with a first water passage, the shaft is provided with a second water passage, the connecting seat and the shaft are connected, the first water passage and the second water passage are in communication, the adapter is sleeved on the shaft, the adapter is connected to the hose, and the second water passage is in communication with the hose through the adapter.

[0021] The water outlet device according to a second aspect embodiment of the present invention includes a pull-out mechanism.

[0022] The water outlet device according to the embodiments of the present invention has at least the following beneficial effects: the user can pull out the hose very smoothly and the pulling feel is comfortable.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: FIG1 is a structural schematic diagram of the pull-out mechanism; FIG2 is an exploded structural schematic diagram of the pull-out mechanism; FIG3 is a partial structural schematic diagram of one embodiment of the pull-out mechanism; FIG4 is an internal structural schematic diagram of FIG1; FIG5 is another usage schematic diagram of FIG4; FIG6 is a structural schematic diagram of the shaft; FIG7 is a partial structural schematic diagram of another embodiment of the pull-out mechanism; FIG8 is a cross-sectional view of FIG7; FIG9 is another usage schematic diagram of FIG8; and FIG10 is a structural schematic diagram of the fixed base.

[0034] Reference numerals: Housing 100; Outlet 110; Shaft 200; Guide thread 210; Slide groove 220; Second water passage 230; Water outlet 240; Pipe winding wheel 300; Guide groove 310; First end 320; Hose 400; Extension section 410; Pipe winding section 420; Starting position 430; Reset mechanism 500; Fixed seat 510; Sliding sleeve 520; Rib 521; Coil spring 530; Connecting seat 600; Conducting part 610; First water passage 620; Anti-rotation structure 700; Magnet 710; Damping ring 720; Elastic element 730; Adapter 800. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The present invention relates to a pull-out mechanism, comprising a housing 100, a shaft 200, a tube-winding wheel 300, and a flexible tube 400.

[0037] As shown in Figures 1, 2, 3, and 4, the housing 100 can be configured as a box shape, and the housing 100 has an outlet 110. In the direction shown, the outlet 110 can be located at the top of the housing 100. The shaft 200, the winding wheel 300, and the hose 400 can be installed inside the housing 100. The shaft 200 is fixedly installed on the housing 100, and the shaft 200 does not rotate or translate relative to the housing 100. The winding wheel 300 can be configured as a roller, and the winding wheel 300 is sleeved on the shaft 200, allowing the winding wheel 300 to rotate relative to the shaft 200 and translate axially. The hose 400 is coiled around the coiling wheel 300 in a spiral manner along the axial direction of the coiling wheel 300. Each coil of the hose 400 can be closely abutted against each other along the axial direction of the coiling wheel 300, or each coil can be spaced apart along the axial direction of the coiling wheel 300. The coiled hose segments do not overlap each other radially along the coiling wheel 300. A portion of the hose 400 detaches from the coiling wheel 300 and extends towards the outlet 110 along the radial direction of the coiling wheel 300 or inclined to the axial direction of the coiling wheel 300. A portion of the hose 400 extends through the outlet 110 to the outside of the housing 100. The section of hose 400 extending from the winding wheel 300 toward the outlet 110 is defined as the extension section 410, and the section of hose 400 coiled around the winding wheel 300 is defined as the coiled section 420. The lengths of the extension section 410 and the coiled section 420 are dynamically changing. When hose 400 is pulled out of housing 100 relative to outlet 110, coiled section 420 is gradually pulled away from winding wheel 300, the length of extension section 410 becomes longer, and the length of coiled section 420 becomes shorter. When hose 400 retracts into housing 100 relative to outlet 110, extension section 410 gradually rewinds onto winding wheel 300, the length of extension section 410 becomes shorter, and the length of coiled section 420 becomes longer. When the hose 400 extends or rewinds relative to the winding wheel 300, the winding wheel 300 rotates relative to the shaft 200. The direction of rotation of the winding wheel 300 relative to the shaft 200 when the hose 400 is withdrawn from the winding wheel 300 is defined as forward rotation (hereinafter referred to as "forward rotation"). The direction of rotation of the winding wheel 300 relative to the shaft 200 when the hose 400 rewinds relative to the winding wheel 300 is defined as reverse rotation (hereinafter referred to as "reverse rotation"). During forward and reverse rotation, the winding wheel 300 also translates axially relative to the shaft 200. As shown in the diagram, the hose 400 spirals from the left end to the right end of the winding wheel 300. When the winding wheel 300 rotates forward, it translates axially to the right relative to the shaft 200; when the winding wheel 300 rotates reverse, it translates axially to the left relative to the shaft 200.The starting position 430 of the extension section 410 disengaging from the winding wheel 300 can be set to be directly opposite the outlet 110 along the radial direction of the winding wheel 300, or the line connecting the starting position 430 of the extension section 410 disengaging from the winding wheel 300 to the outlet 110 can be deviated from the radial direction of the winding wheel 300 by an angle A not exceeding 10°. In this embodiment, the starting position 430 of the extension section 410 disengaging from the winding wheel 300 is located below the outlet 110 and directly opposite the outlet 110. As shown in Figure 5, when the hose 400 is pulled to extend out of the outlet 110, the hose reel 300 rotates clockwise, the extension section 410 becomes longer, the hose section 420 becomes shorter, and the proportion of the length occupied by the hose section 420 along the axial direction of the hose reel 300 also becomes smaller. The starting position 430 of the extension section 410 also shifts to the left relative to the axial direction of the hose reel 300. At this time, the hose reel 300 moves to the right, so that the starting position 430 of the extension section 410 is always kept in the current relative position with the outlet 110. As shown in Figure 4, when the hose 400 retracts towards the outlet 110, the winding wheel 300 reverses direction, and the hose 400 rewinds onto the winding wheel 300. The protruding section 410 becomes shorter, and the winding section 420 becomes longer. The proportion of the length occupied by the winding section 420 along the axial direction of the winding wheel 300 also increases. The starting position 430 of the protruding section 410 also shifts to the right relative to the axial direction of the winding wheel 300. At this time, the winding wheel 300 moves to the left, so that the starting position 430 of the protruding section 410 always remains in the current relative position with the outlet 110. During the process of pulling out or rewinding the hose 400 relative to the outlet 110, the winding wheel 300 can rotate and translate in the corresponding direction, so that the relative position of the hose 400 at the starting position 430 of the hose segment detached from the winding wheel 300 and the outlet 110 remains unchanged. This ensures that the direction in which the hose 400 passes through the outlet 110 can remain in a relatively stable position, and the relative position of the hose 400 and the outlet 110 will not change continuously due to the change in the position of the hose 400 relative to the winding wheel 300 during the extension and retraction process. This ensures that the hose 400 and the outlet 110 do not contact each other, or maintain a consistent angle of contact, so that the frictional force formed remains relatively stable. As a result, the user can pull out the hose 400 very smoothly and with a comfortable pulling feel.

[0038] The present invention also relates to a water outlet device, which includes a pull-out mechanism. A hose 400 extends from the outlet 110 and is connected to a shower head, spray gun, faucet, etc. The other end of the hose 400 is connected to a water supply system, which supplies water to the shower head, spray gun, faucet, etc., through the hose 400. The housing 100 can be pre-embedded in a wall, bathtub, or other similar location for use.

[0039] In this embodiment, the shaft 200 can be configured as a smooth shaft, and the winding wheel 300 is fitted onto the shaft 200. Friction between the two can be reduced by applying lubricating oil, allowing the winding wheel 300 to move relative to the shaft 200 during the process of the hose 400 being withdrawn or wound back onto the winding wheel 300. In one embodiment, as shown in Figures 4 and 6, the shaft 200 is provided with a guide thread 210, which extends axially around the surface of the shaft 200. The inner wall of the winding wheel 300 is provided with an internal thread that mates with the guide thread 210. The winding wheel 300 is threadedly connected to the shaft 200 via the guide thread 210, and the pitch of the guide thread 210 is the same as the outer diameter of the hose 400. Utilizing the guiding effect of the guide thread 210, the winding wheel 300 can synchronously translate axially while rotating clockwise or counterclockwise. The hose 400 is withdrawn or rewound one turn relative to the winding wheel 300. The translation of the winding wheel 300 relative to the shaft 200 is approximately equal to the outer diameter of the hose 400. This controls the relative position of the starting position 430 of the extension section 410 with the outlet 110. The outer surface of the winding wheel 300 can be a smooth rod, or a guide groove 310 can be provided on the surface of the winding wheel 300. The guide groove 310 extends spirally along the axial direction of the winding wheel 300. The hose 400 overlaps the guide groove 310, which guides the winding of the hose 400 relative to the winding wheel 300, ensuring stability when the hose 400 is rewound or withdrawn relative to the winding wheel 300.

[0040] In one embodiment, as shown in Figures 2, 3, 4, and 5, the pull-out mechanism further includes a connecting seat 600. The connecting seat 600 is positioned opposite one end of the winding wheel 300. In this embodiment, with the direction shown in the figures, the axial direction of the winding wheel 300 is horizontal, and the connecting seat 600 is located on the right side of the winding wheel 300, with the connecting seat 600 opposite to the right end of the winding wheel 300. An anti-rotation structure 700 is provided between the winding wheel 300 and the connecting seat 600. The anti-rotation structure 700 can apply resistance to the winding wheel 300, hindering its rotation. Under the action of this resistance, when the user pulls out the hose 400 with excessive force or the winding wheel 300 rotates too quickly during reversal, the resistance can effectively reduce the rotational speed of the winding wheel 300, preventing the hose 400 from being pulled out or rewound too quickly and damaging the pull-out mechanism.

[0041] Based on the above embodiments, as shown in Figures 2, 4, and 5, the connecting seat 600 is made of metal, such as copper. At least a portion of the connecting seat 600 is coaxially arranged with the winding wheel 300. In the illustrated direction, the connecting seat 600 is located on the right side of the winding wheel 300, and the left side of the connecting seat 600 is opposite to the right end of the winding wheel 300. The anti-rotation structure 700 includes magnets 710, and several magnets 710 are installed on the end of the winding wheel 300 near the connecting seat 600 (the right end of the winding wheel 300 in the illustration). When the winding wheel 300 rotates clockwise, it translates axially to the right, and the magnets 710 gradually approach the connecting seat 600. The connecting seat 600 cuts the magnetic field generated by the magnets 710. According to Lenz's law, the magnets 710 and the connecting seat 600 cooperate to form the aforementioned resistance. If a user suddenly pulls the hose 400 forcefully, causing the magnet 710 to accelerate forward rotation along with the winding wheel 300 and move towards the connecting seat 600 at an accelerated speed, according to Lenz's law, the faster the speed, the greater the resistance. This resistance effectively hinders the accelerated translation of the winding wheel 300, thus preventing its accelerated rotation. The resistance changes accordingly with the speed of the winding wheel 300, ensuring a relatively stable speed during its forward-to-right translation. The winding wheel 300 can also be self-reverse and reset using a reset mechanism. When the hose 400 is released, the winding wheel 300 reverses direction. If the rotational speed of the winding wheel 300 increases instantaneously upon release, it will move to the left relative to the connecting seat 600. According to Lenz's law, the magnet 710, in conjunction with the connecting seat 600, generates significant resistance, effectively preventing the hose 400 from retracting rapidly due to the high-speed reverse rotation of the winding wheel 300. As the speed of the winding wheel 300 changes to the left, the resistance also changes accordingly, thus enabling the winding wheel 300 to reverse and translate to the left at a relatively stable speed. Specifically, the part of the connecting seat 600 facing the winding wheel 300 is a cylindrical conductive part 610, and the end of the winding wheel 300 near the connecting seat 600 is a hollow cylindrical first end 320. The inner diameter of the first end 320 is larger than the outer diameter of the conductive part 610, and several magnets 710 are distributed circumferentially on the inner wall of the first end 320. When the winding wheel 300 rotates clockwise and moves to the right, the magnet 710 gradually approaches the conducting part 610 along with the first end 320. The conducting part 610 can gradually be inserted into the first end 320, or when the magnet 710 gradually moves away from the conducting part 610 along with the first end 320, the magnetic cutting area of ​​the conducting part 610 on the magnet 710 also changes synchronously. In conjunction with the change in the moving speed of the winding wheel 300, a corresponding increase or decrease in resistance is formed.

[0042] In one embodiment, as shown in Figures 7, 8, and 9, the anti-rotation structure 700 includes a damping ring 720 and an elastic element 730. The portion of the connecting seat 600 facing the winding wheel 300 is a cylindrical conductive portion 610. In this embodiment, in the illustrated direction, the conductive portion 610 is located on the left side of the connecting seat 600, and the winding wheel 300 is located to the left of the conductive portion 610 and in a relatively opposite position. The damping ring 720 can be a rubber ring or the like, and it is sleeved on the conductive portion 610, allowing it to move axially relative to the conductive portion 610. The elastic element 730 can be a spring or the like, and it is sleeved on the conductive portion 610. The left end of the elastic element 730 abuts against the damping ring 720, and the right end abuts against the conductive portion 610 or other positions on the connecting seat 600. The elastic element 730 applies an elastic force to the damping ring 720, causing the damping ring 720 to move to the left towards the tube sheave 300. The end (right end) of the tube sheave 300 near the connecting seat 600 is a hollow cylindrical first end 320. The inner wall of the first end 320 and the outer wall of the damping ring 720 can be an interference fit. Initially, the first end 320 is far from the damping ring 720. As the tube wheel 300 rotates clockwise and moves to the right, the first end 320 gradually approaches the transmission part 610. When the first end 320 initially contacts the damping ring 720, it pushes the damping ring 720 to move to the right on the transmission part 610 until the first end 320 is gradually fitted onto the damping ring 720. The contact area between the first end 320 and the damping ring 720 gradually increases, and the inner wall of the first end 320 abuts against the inner wall of the damping ring 720. The first end 320 exerts radial pressure on the damping ring 720 towards the center, causing the damping ring 720 to contract, increasing the pressure of the damping ring 720 on the transmission part 610, and thus increasing the friction. When the hose 400 is pulled out to its maximum length, the damping ring 720 is completely inserted into the first end 320, at which point the resistance is at its maximum. When the tube wheel 300 reverses and moves to the left, the first end 320 gradually moves to the left and disengages from the damping ring 720. As the contact area between the first end 320 and the damping ring 720 gradually decreases, the resistance also gradually decreases.

[0043] Based on the above embodiments, as shown in Figures 2, 3, and 4, the pull-out mechanism further includes a reset mechanism 500. The reset mechanism 500 is connected to the winding wheel 300, and the reset mechanism 500 applies a gradual elastic rotational force to the winding wheel 300. This elastic rotational force drives the winding wheel 300 to rotate in the direction of rewinding the hose 400. In this embodiment, when the user pulls the hose 400 away from the winding wheel 300, the winding wheel 300 rotates clockwise, and the elastic rotational force of the reset mechanism 500 on the winding wheel 300 gradually increases. When the hose 400 is pulled out to its maximum length, the elastic rotational force reaches its maximum value. After the user releases the hose 400, the reel 300 reverses direction under the action of the elastic rotational force. At the very beginning of the reversal, the elastic rotational force reaches its maximum value, resulting in the fastest instantaneous reversal speed and leftward translational speed of the reel 300. At this moment, the resistance is also at its maximum, preventing the hose 400 from suddenly and rapidly retracting into the housing 100 the instant the user releases it. As the hose 400 gradually winds back onto the reel 300, the elastic rotational force exerted by the reset mechanism 500 on the reel 300 gradually decreases, as do the reversal and translational speeds of the reel 300. The resistance generated by the anti-rotation structure 700 on the reel 300 also gradually decreases. The coordinated action of the reset mechanism 500 and the anti-rotation structure 700 results in synchronous and dynamic changes in the elastic rotational force and resistance, allowing the reel 300 to maintain a relatively stable and uniform reversal speed during the rewinding process.

[0044] Specifically, as shown in Figures 2, 3, 5, and 10, the reset mechanism 500 includes a fixed base 510, a sliding sleeve 520, and a coil spring 530. In this embodiment, the fixed base 510 is fixed to the left end of the winding tube wheel 300, and the sliding sleeve 520 is mounted on the fixed base 510, allowing relative rotation between the fixed base 510 and the sliding sleeve 520. The coil spring 530 is sleeved on the sliding sleeve 520, with both ends connected to the fixed base 510 and the sliding sleeve 520, respectively. The shaft 200 has an axially extending groove 220, and the shaft 200 coaxially passes through the sliding sleeve 520. The inner wall of the sliding sleeve 520 may be provided with a rib 521, and the sliding sleeve 520 slides on the groove 220 through the rib 521. When the winding wheel 300 rotates clockwise and moves to the right, the fixed seat 510 rotates clockwise with the winding wheel 300, and the reset mechanism 500 moves to the right with the winding wheel 300. At this time, the sliding sleeve 520 slides along the sliding groove 220 and does not rotate relative to the shaft 200. The sliding sleeve 520 rotates relative to the fixed seat 510, causing the coil spring 530 to rotate and elastically compress. The coil spring 530 generates the aforementioned elastic rotational force, which gradually increases. When the winding wheel 300 rotates counterclockwise and moves to the left, the fixed seat 510 rotates counterclockwise with the winding wheel 300, and the reset mechanism 500 moves to the left with the winding wheel 300. At this time, the sliding sleeve 520 slides along the sliding groove 220 and does not rotate relative to the shaft 200. The sliding sleeve 520 rotates relative to the fixed seat 510, causing the coil spring 530 to rotate and elastically reset. The coil spring 530 generates the aforementioned elastic rotational force, which gradually decreases.

[0045] In one embodiment, as shown in Figures 2, 3, and 4, the pull-out mechanism further includes an adapter 800. The connecting seat 600 has a first water passage 620, and the shaft 200 has a second water passage 230. The connecting seat 600 and the shaft 200 are connected, and the first water passage 620 and the second water passage 230 are interconnected. The adapter 800 is sleeved on the shaft 200, and a water outlet 240 can be opened on the wall of the shaft 200. The adapter 800 is connected to one end of the flexible hose 400, and the second water passage 230 is connected to the adapter 800 through the water outlet 240, thereby enabling the first water passage 620, the second water passage 230, the adapter 800, and the flexible hose 400 to be sequentially connected. An external water supply system is connected to the connecting seat 600 and communicates with the first water passage 620 to achieve water supply.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pull-out mechanism, characterized in that, include: A housing (100) having an outlet (110) thereon; a shaft (200) fixed to the housing (100); a winding wheel (300) sleeved on the shaft (200); and a hose (400) spirally wound around the winding wheel (300) along its axial direction, with a portion of the hose (400) detached from the winding wheel. The wheel (300) is telescopically and movable through the outlet (110). When the hose (400) is pulled out and wound back onto the winding wheel (300), the winding wheel (300) can rotate in both directions relative to the shaft (200) and synchronously reciprocate along the axial direction of the shaft (200), so that the relative position of the hose (400) at the starting position (430) of the hose segment detached from the winding wheel (300) and the outlet (110) remains unchanged.

2. The pull-out mechanism according to claim 1, characterized in that: The shaft (200) is provided with a guide thread (210), and the tube winding wheel (300) is threadedly connected to the shaft (200) through the guide thread (210). The pitch of the guide thread (210) is the same as the outer diameter of the hose (400).

3. The pull-out mechanism according to claim 2, characterized in that: The winding wheel (300) is provided with a guide groove (310) extending spirally along the axial direction, and the hose (400) is wound around the winding wheel (300) through the guide groove (310).

4. The pull-out mechanism according to claim 1, characterized in that: It also includes a connecting seat (600), which is positioned opposite one end of the winding wheel (300). An anti-rotation structure (700) is provided between the winding wheel (300) and the connecting seat (600). The anti-rotation structure (700) can apply resistance to the winding wheel (300) to prevent it from rotating.

5. The pull-out mechanism according to claim 4, characterized in that: The connecting seat (600) is made of metal. At least a portion of the connecting seat (600) is coaxially arranged with the winding wheel (300). The anti-rotation structure (700) includes a magnet (710). A plurality of the magnets (710) are installed on one end of the winding wheel (300) near the connecting seat (600).

6. The pull-out mechanism according to claim 5, characterized in that: The portion of the connecting seat (600) facing the winding wheel (300) is a cylindrical conductive part (610). The end of the winding wheel (300) near the connecting seat (600) is a hollow cylindrical first end (320). The inner diameter of the first end (320) is larger than the outer diameter of the conductive part (610). A plurality of magnets (710) are distributed circumferentially on the inner wall of the first end (320).

7. The pull-out mechanism according to claim 4, characterized in that: The anti-rotation structure (700) includes a damping ring (720) and an elastic element (730). The part of the connecting seat (600) facing the winding wheel (300) is a cylindrical conductive part (610). The damping ring (720) is sleeved on the conductive part (610) and can move axially relative to the conductive part (610). The elastic element (730) applies an elastic force to the damping ring (720) to move it closer to the winding wheel (300). The end of the winding wheel (300) near the connecting seat (600) is a hollow cylindrical first end (320). The first end (320) is sleeved on and abuts against the damping ring (720) or moves away from the damping ring (720) as the winding wheel (300) translates axially.

8. The pull-out mechanism according to any one of claims 1 to 7, characterized in that: It also includes a reset mechanism (500) connected to the winding wheel (300), the reset mechanism (500) applying a gradual elastic rotational force to the winding wheel (300), the elastic rotational force driving the winding wheel (300) to rotate in the direction of winding the hose (400).

9. The pull-out mechanism according to claim 8, characterized in that: The reset mechanism (500) includes a fixed seat (510), a sliding sleeve (520), and a coil spring (530). The fixed seat (510) is fixed on the end of the winding tube wheel (300). The sliding sleeve (520) is rotatably mounted on the fixed seat (510). The coil spring (530) is sleeved on the sliding sleeve (520). The two ends of the coil spring (530) are respectively connected to the fixed seat (510) and the sliding sleeve (520). The shaft (200) is provided with a sliding groove (220) opened along the axial direction. The shaft (200) is coaxially passed through the sliding sleeve (520). The sliding sleeve (520) and the sliding groove (220) are slidably connected to each other.

10. The pull-out mechanism according to claim 4, characterized in that: It also includes an adapter (800), the connecting seat (600) is provided with a first water passage (620), the shaft (200) is provided with a second water passage (230), the connecting seat (600) and the shaft (200) are connected, the first water passage (620) and the second water passage (230) are connected, the adapter (800) is sleeved on the shaft (200), the adapter (800) is connected to the hose (400), and the second water passage (230) is connected to the hose (400) through the adapter (800).

11. A water outlet device, characterized in that, Includes the pull-out mechanism as described in any one of claims 1 to 10.

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