Waterway switching structure and waterway switching method of toilet and human body cleaning device thereof

Abstract

The invention discloses a waterway switching structure and a waterway switching method of a toilet and a human body cleaning device thereof. The waterway switching structure comprises: a nozzle unit, comprising a fixed nozzle and a plurality of telescopic nozzles which are sequentially sleeved and connected from the outside to the inside, wherein the front end of the last nozzle of the plurality of telescopic nozzles is provided with a spray hole connected to the waterway; a driving unit, comprising a driving member and a plurality of screws, wherein the number of the screws is the same as the number of the telescopic nozzles, wherein the driving member drives the telescopic nozzles of the plurality of stages to telescope through the screws of the plurality of stages, and when the nozzle unit is in the initial position, the driving member can drive the telescopic nozzles of the plurality of stages to retract backward to a retracted position relative to the fixed nozzle through the screws of the plurality of stages; and a switching assembly, which is arranged at the front end of the last nozzle, and drives the telescopic nozzles of the plurality of stages to retract backward to a retracted position each time so that the switching assembly drives the sliding member to switch between a first cleaning position and a second cleaning position once. The invention can reduce costs and has a simple and compact structure.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary ware, and in particular to a water channel switching structure and a water channel switching method of a toilet human body cleaning device and a toilet having the water channel switching structure or the water channel switching method. Background Art

[0002] Existing smart toilets are generally equipped with a toilet human body cleaning device, which usually includes a fixed bracket and a nozzle that can be telescopically mounted on the fixed bracket. After the nozzle is extended, it can spray cleaning water toward the human body. However, in the prior art, the nozzle adopts an integrated rod, and the driving component that drives the nozzle to telescopically move relative to the fixed bracket usually adopts a gear transmission component or a synchronous belt transmission component, etc. The driving component occupies a large space, making the structure of the toilet human body cleaning device not compact, which is not conducive to the miniaturization and low-profile design of the smart toilet.

[0003] In addition, in order to make the cleaning function more diverse, the existing toilet body cleaning device usually has a buttocks washing waterway and a women's washing waterway on the nozzle, so a waterway switching structure is required to switch the buttocks washing waterway and the women's washing waterway. The existing technology usually sets a waterway reversing valve or a solenoid valve upstream of the nozzle, and drives the valve core of the waterway reversing valve by a motor to achieve switching or controls the opening and closing of the corresponding waterway by opening and closing the solenoid valve. However, the cost of the reversing valve and the solenoid valve is relatively high, which is not conducive to reducing costs and improving product competitiveness. Summary of the invention

[0004] In view of this, the object of the present invention is to provide a water channel switching structure and a water channel switching method of a toilet human body cleaning device and a toilet having the water channel switching structure or the water channel switching method, which can achieve the purpose of reducing costs and has a simple and compact structure and reliable functions.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A water channel switching structure of a toilet human body cleaning device, comprising:

[0007] Bracket;

[0008] The nozzle unit comprises a fixed nozzle and a plurality of telescopic nozzles which are sequentially sleeved from the outside to the inside, wherein the fixed nozzle is fixedly connected to the bracket, a water channel is provided in the fixed nozzle and the plurality of telescopic nozzles, and a spray hole which is connected to the water channel is provided at the front end of the last nozzle of the plurality of telescopic nozzles;

[0009] A driving unit, comprising a driving member and a plurality of screw rods, wherein the driving member is fixedly connected to the bracket, the number of the screw rods is the same as the number of the telescopic nozzles, and the driving member drives the telescopic nozzles of the plurality of stages to telescope through the screw rods of the plurality of stages, and when the nozzle unit is in an initial position, the driving member can drive the telescopic nozzles of the plurality of stages to retract backward to a retracted position relative to the fixed nozzle through the screw rods of the plurality of stages;

[0010] A switching assembly is arranged at the front end of the last-stage nozzle, and the switching assembly includes a sliding member. By driving the telescopic nozzles of several stages to retract backward to the retracted position each time, the switching assembly drives the sliding member to switch between the first cleaning position and the second cleaning position once, thereby controlling the water path to be connected to different injection holes.

[0011] A further preferred solution is that the switching assembly also includes a spring-press structure similar to a cylindrical pen, and each time the final-stage nozzle is retracted to the retracted position, the front end of the first-stage screw of several stages of the screw directly presses or indirectly presses the button of the spring-press structure through the sliding member, so that when the final-stage nozzle is reset to the initial position, the button of the spring-press structure pops out or retracts, and when the button pops out, it drives the sliding member to slide from the first cleaning position to the second cleaning position, and when the button retracts, the sliding member is in the first cleaning position.

[0012] A further preferred solution is that the sliding member is a sliding sleeve, and a water hole connected to the water channel is provided on the side wall of the sliding sleeve, and the spray holes include a buttock wash spray hole and a women's wash spray hole, and when the sliding sleeve is located at the first cleaning position, the water hole is connected to the women's wash spray hole, and when the sliding sleeve is located at the second cleaning position, the water hole is connected to the buttock wash spray hole.

[0013] A further preferred solution is that the telescopic nozzle includes a primary nozzle and a secondary nozzle, and correspondingly, the screw includes a primary screw and a secondary screw, the driving member drives the primary screw to rotate, and the primary screw in turn drives the secondary screw to rotate, and when the primary screw rotates, it drives the primary nozzle to telescope relative to the fixed nozzle, and when the primary nozzle telescopes relative to the fixed nozzle, it drives the secondary nozzle and the secondary screw to telescope relative to the fixed nozzle, and when the secondary screw rotates, it drives the secondary nozzle to telescope relative to the primary nozzle.

[0014] A further preferred solution is that a primary external thread is axially provided on the outer wall of the primary screw, the secondary screw is a hollow structure, and a secondary external thread is axially provided on the outer wall of the secondary screw, the rear end of the primary nozzle is provided with a primary internal thread threadedly matched with the primary external thread, and the inner wall of the secondary nozzle is provided with a secondary internal thread matched with the secondary external thread; the rear end of the primary screw is transmission-connected with the driving member, the rear end of the primary screw and the rear end of the fixed nozzle are relatively limited in the axial direction, the rear end of the secondary screw and the rear end of the primary nozzle are relatively limited in the axial direction, the primary nozzle and the secondary nozzle are in a retracted state, the threaded section of the secondary screw is sleeved in the inner cavity of the secondary nozzle, and the threaded section of the primary screw is sleeved in the inner cavity of the secondary screw.

[0015] A further preferred solution is that the secondary internal thread is arranged on the inner wall of the rear end of the secondary nozzle, the rear end of the first-level nozzle is provided with a first-level sleeve, the first-level internal thread is arranged on the inner wall of the first-level sleeve, the secondary screw is coaxially arranged with the first-level sleeve, and the first-level screw passes through the first-level sleeve and extends into the inner cavity of the secondary screw.

[0016] A further preferred solution is that one of the outer wall of the primary screw and the inner wall of the secondary screw is provided with a slide groove extending along the axial direction, and the other of the two is provided with a convex rib extending along the axial direction, and the convex rib is embedded in the slide groove and slides along the slide groove, so that the primary screw and the secondary screw are limitedly matched in the circumferential direction and can slide in the axial direction.

[0017] A further preferred solution is that the waterway can be extended and retracted along with the extension and retraction of the primary nozzle and the secondary nozzle, a fixed water pipe is provided in the fixed nozzle, a primary water pipe is provided in the primary nozzle, a secondary water pipe is provided in the secondary nozzle, the fixed water pipe, the primary water pipe and the secondary water pipe are sequentially connected and connected to form the waterway, when the primary nozzle is extended and retracted relative to the fixed nozzle, the primary water pipe is correspondingly extended and retracted relative to the fixed water pipe, when the secondary nozzle is extended and retracted relative to the primary nozzle, the secondary water pipe is correspondingly extended and retracted relative to the primary water pipe; or,

[0018] The inner cavity of the fixed nozzle, the inner cavity of the first-stage nozzle and the inner cavity of the second-stage nozzle form the waterway.

[0019] A further preferred solution is that the waterway can be extended and retracted along with the extension and retraction of the telescopic nozzles of several stages, or the waterway adopts a hose, the rear end of the hose is fixedly connected to the rear end of the fixed nozzle, and the front end of the hose is connected to the final nozzle.

[0020] A further preferred solution is that the thread pitches of the screws of several stages are equal; the driving member is a motor that can rotate forward and reverse, the motor is located behind the fixed nozzle, and the output shaft of the motor is coaxially rotated with the rear end of the first-stage screw of the several stages of the screw.

[0021] A further preferred solution is that it also includes a position sensor and a controller, wherein the driving member is a motor, and the controller is electrically connected to the motor and the position sensor respectively, and the position sensor is used to sense the position of the sliding member. The controller determines the connectivity status between the water path and the spray hole based on the position signal obtained by the position sensor, and controls whether the nozzle unit retracts backward before extending forward relative to the bracket according to the user's instructions.

[0022] A further preferred solution is that it also includes a controller, the driving member is a motor, and the motor is electrically connected to the controller. The controller can memorize the position of the sliding member of the switching assembly when the nozzle unit was reset to the initial position last time to form memory information, and the controller controls whether the nozzle unit retracts backward before extending forward relative to the bracket according to the user's instructions and the memory information.

[0023] In addition, the present invention also provides a water channel switching method for a toilet human body cleaning device, using the water channel switching structure of the toilet human body cleaning device described in any one of the above items, and the water channel switching method comprises the following steps:

[0024] S1: acquiring the user instruction and the position of the sliding member of the switching assembly when the nozzle unit is in the initial position through the controller, and executing step S2 when the controller determines that the spray hole connected to the water path matches the user instruction, and executing step S3 when the controller determines that the spray hole connected to the water path does not match the user instruction;

[0025] S2: The controller controls the driving member so that the nozzle unit directly extends forward;

[0026] S3: The controller first controls the driving member to make the nozzle unit retract backward to drive the switching component to switch, and then controls the driving member to make the nozzle unit extend forward.

[0027] In addition, the present invention also provides a toilet, including a toilet seat, a toilet cover and a toilet body cleaning device, characterized in that the toilet body cleaning device includes the water channel switching structure of the toilet body cleaning device described in any of the above items, or the toilet body cleaning device adopts the above-mentioned water channel switching method.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The toilet human body cleaning device of the present invention adopts a multi-stage nozzle (including a fixed nozzle and several stages of telescopic nozzles), and the nozzles of each stage can be relatively telescopic, so that the nozzle unit occupies less space in the axial direction when it is in a retracted state, saving the axial space of the toilet human body cleaning device; in addition, the present invention adopts a multi-stage screw to drive the telescopic movement of the telescopic nozzles of each stage, and the nozzles and screws both extend axially in the telescopic direction, so that the toilet human body cleaning device occupies less space in the radial direction. Therefore, the present invention has a simple and compact structure, can greatly reduce the space occupied by the entire device, and is conducive to the miniaturization and low-profile design of intelligent toilets.

[0030] The present invention arranges a switching component at the front end of the final-stage nozzle, wherein the switching component includes a sliding member. The switching component drives the telescopic nozzles of several stages to retract backward to the retracted position each time so that the switching component drives the sliding member to switch between the first cleaning position and the second cleaning position once, thereby controlling the water path to be connected to different spray holes, thereby realizing the switching of the water path. In this way, there is no need for a motor or a solenoid valve to switch the water path, but the water path switching is realized by a mechanical structure, which saves costs and is conducive to improving the competitive advantage of the product.

[0031] The switching component includes a spring-pressing structure similar to a cylindrical pen, and the switching structure is simple and easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A three-dimensional assembly structure diagram of an embodiment of the present invention is depicted, in which the first-stage nozzle and the second-stage nozzle are in an extended state;

[0034] Figure 2 Draws Figure 1 Exploded diagram of

[0035] Figure 3 A cross-sectional view of an embodiment of the present invention is shown, in which the nozzle unit is in an initial position and the sliding member is in a first washing position (female washing position);

[0036] Figure 4 A cross-sectional view of an embodiment of the present invention is depicted, in which the primary nozzle and the secondary nozzle are retracted to a retracted position relative to the fixed nozzle;

[0037] Figure 5 A cross-sectional view of an embodiment of the present invention is depicted, in which the nozzle unit is in an initial position and the sliding member is in a second washing position (hip washing position);

[0038] Figure 6One of the top views of the primary nozzle and the secondary nozzle in an extended state according to an embodiment of the present invention is shown, and at this time, the sliding member is in the first washing position (female washing position);

[0039] Figure 7 A second top view of an embodiment of the present invention is shown in which the primary nozzle and the secondary nozzle are in an extended state, and the sliding member is in a first washing position (female washing position);

[0040] Figure 8 A third top view of an embodiment of the present invention is shown in which the primary nozzle and the secondary nozzle are in an extended state, and the sliding member is in the second washing position (hip washing position);

[0041] Fig. 9 A three-dimensional exploded view of a switching assembly according to an embodiment of the present invention is shown;

[0042] Fig.10 A three-dimensional structural diagram of a primary sleeve according to an embodiment of the present invention is depicted;

[0043] Fig.11 A three-dimensional structural diagram of a two-stage nozzle according to an embodiment of the present invention is depicted;

[0044] Fig.12 A three-dimensional diagram of a primary screw rod according to an embodiment of the present invention is shown;

[0045] Fig.13 A three-dimensional diagram of a secondary screw rod according to an embodiment of the present invention is shown;

[0046] Fig.14 A cross-sectional view of a secondary screw according to an embodiment of the present invention is shown;

[0047] Fig.15 A schematic diagram showing a toilet human body cleaning device of the present invention installed on a toilet is shown.

[0048] The accompanying drawings are marked as follows:

[0049] 1- Toilet seat;

[0050] 2- Toilet seat cover;

[0051] 3- Toilet body cleaning device:

[0052] 10-fixed nozzle; 12-water inlet joint; 13-fixed sleeve; 14-first limiting protrusion;

[0053] 20-first-stage nozzle; 21-first-stage internal thread; 22-first-stage sleeve; 221-first-stage flow hole; 23-first limiting groove; 24-second limiting protrusion;

[0054] 30-secondary nozzle; 31-secondary internal thread; 311-secondary flow slot; 32-spray hole; 321-hip wash spray hole; 322-female wash spray hole; 34-second limit slot;

[0055] 40-motor; 41-output shaft of the motor;

[0056] 50-first-stage screw; 51-first-stage external thread; 52-slideway;

[0057] 60-secondary screw; 61-secondary external thread; 62-convex rib;

[0058] 70-Blocking piece;

[0059] 80-Stand;

[0060] 91-primary sealing ring; 92-secondary sealing ring;

[0061] 100 - switching component: 101 - sliding part; 1011 - water hole; 102 - spring-pressing structure; 1021 - button. DETAILED DESCRIPTION

[0062] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0063] See also Figures 1 to 14 An embodiment of the present invention provides a compact toilet human body cleaning device, including a nozzle unit, a driving unit and a switching assembly 100.

[0064] 1. The telescopic structure and its working process are described in detail as follows:

[0065] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 The nozzle unit includes a fixed nozzle 10 and a plurality of telescopic nozzles which are sequentially arranged from the outside to the inside. The fixed nozzle 10 and the plurality of telescopic nozzles are provided with interconnected waterways (see Figure 7 and Figure 8 The front end of the final nozzle of the telescopic nozzle of the plurality of stages is provided with a spray hole 32 connected to the waterway, and the spray hole 32 is used to spray water toward the human body. Specifically, in this embodiment, the telescopic nozzle is provided with two stages, including a primary nozzle 20 and a secondary nozzle 30, respectively. The secondary nozzle 30 is the final nozzle, and the front end thereof is provided with a spray hole 32 connected to the waterway.

[0066] See also Figure 2 and Figure 3The driving unit includes a driving member and a plurality of screws. The number of screws is the same as the number of telescopic nozzles. The driving member drives the telescopic nozzles of the plurality of stages to telescope through the screws of the plurality of stages. Specifically, in the present embodiment, corresponding to the two-stage telescopic nozzle, the screw is also provided with two stages, including a primary screw 50 and a secondary screw 60, respectively, and the primary screw 50 is the first-stage screw. The driving member drives the primary screw 50 to rotate, and the primary screw 50 further drives the secondary screw 60 to rotate. When the primary screw 50 telescopes, it drives the primary nozzle 20 to telescope relative to the fixed nozzle 10. When the primary nozzle 20 telescopes relative to the fixed nozzle 10, it drives the secondary nozzle 30 and the secondary screw 60 to telescope relative to the fixed nozzle 10. When the secondary screw 60 rotates, it drives the secondary nozzle 30 to telescope relative to the primary nozzle 20. Preferably, the pitch of the threads on the primary screw 50 and the secondary screw 60 are equal.

[0067] In this embodiment, a primary external thread 51 is provided on the outer wall of the primary screw 50 in the axial direction. The secondary screw 60 is a hollow structure, and a secondary external thread 61 is provided on the outer wall of the secondary screw 60 in the axial direction. The rear end of the primary nozzle 20 is provided with a primary internal thread 21 threadedly matched with the primary external thread 51. The inner wall of the secondary nozzle 30 is provided with a secondary internal thread 31 matched with the secondary external thread 61. The rear end of the primary screw 50 is transmission-connected with the driving member, and the rear end of the primary screw 50 and the rear end of the fixed nozzle 10 are relatively limited in the axial direction, that is, the relationship between the primary screw 50 and the fixed nozzle 10 is that they can rotate relative to each other in the circumferential direction but are relatively limited in the axial direction, and the primary screw 50 will not move axially relative to the fixed nozzle 10. The rear end of the secondary screw 60 and the rear end of the primary nozzle 20 are relatively limited in the axial direction, and the relationship between the secondary screw 60 and the primary nozzle 20 is that they can rotate relative to each other in the circumferential direction but are relatively limited in the axial direction, and the secondary screw 60 will not move axially relative to the primary nozzle 20. When the primary nozzle 20 and the secondary nozzle 30 are in the retracted state, the threaded section of the secondary screw 60 is sleeved in the inner cavity of the secondary nozzle 30, and the threaded section of the primary screw 50 is sleeved in the inner cavity of the secondary screw 60. This design can make the structure more compact.

[0068] See also Figure 2 and Figure 3 Specifically, the rear end of the secondary screw 60 is relatively limited in the axial direction with the rear end of the primary nozzle 20 through a baffle 70. The baffle 70 is fixedly connected to the rear end of the primary nozzle 20. Preferably, the rear end of the secondary screw 60 is sleeved outside the portion of the primary sleeve 22 having the primary internal thread 21 described below.

[0069] See also Figure 2 , Figure 3 , Fig.10 and Fig.11In this embodiment, the secondary internal thread 31 is provided on the inner wall of the rear end of the secondary nozzle 30, and a secondary flow groove 311 is provided axially on the secondary internal thread 31 (see Fig.11 ), the water in the primary nozzle 20 enters the secondary nozzle 30 through the secondary flow groove 311. A primary sleeve 22 is fixedly provided at the rear end of the primary nozzle 20, and a primary internal thread 21 is provided on the inner wall of the primary sleeve 22, and a primary flow hole 221 is provided on the primary sleeve 22. The water flow of the fixed nozzle 10 enters the primary nozzle 20 through the primary flow hole 221. A primary sealing ring 91 is provided on the outer wall of the primary sleeve 22 to seal with the inner wall of the fixed nozzle 10, and a secondary sealing ring 92 is provided on the outer wall of the secondary nozzle 30 to seal with the inner wall of the primary nozzle 20. The secondary screw 60 is coaxially arranged with the primary sleeve 22, and the primary screw 50 extends into the inner cavity of the secondary screw 60 after passing through the primary sleeve 22. Such a design can make the structure more compact. Among them, the primary sleeve 22 can be integrally formed with the primary nozzle 20 or separately formed and then fixedly connected.

[0070] See also Fig.12 and Fig.13 In this embodiment, one of the outer wall of the primary screw 50 and the inner wall of the secondary screw 60 is provided with a slide groove 52 extending in the axial direction, and the other is provided with a convex rib 62 extending in the axial direction. The convex rib 62 is embedded in the slide groove 52 and slides along the slide groove 52, so that the primary screw 50 and the secondary screw 60 are limited in the circumferential direction and can slide in the axial direction, so that the primary screw 50 and the secondary screw 60 can slide relative to each other in the axial direction, and at the same time, when the primary screw 50 rotates, it can drive the secondary screw 60 to rotate synchronously. Specifically, the outer wall of the primary screw 50 is provided with a slide groove 52, and the inner wall of the secondary screw 60 is provided with a convex rib 62.

[0071] See also Figure 3 and Figure 7 In this embodiment, the waterway can be extended and retracted along with the extension and retraction of the primary nozzle 20 and the secondary nozzle 30. The specific implementation method is: the inner cavity of the fixed nozzle 10, the inner cavity of the primary nozzle 20 and the inner cavity of the secondary nozzle 30 form the waterway. For the specific water flow path, see Figure 7 and Figure 8, the water in the inner cavity of the fixed nozzle 10 enters the inner cavity of the first-level nozzle 20 through the first-level flow hole 221 on the first-level sleeve 22, and then enters the inner cavity of the second-level nozzle 30 through the second-level flow groove 311 on the second-level internal thread 31, and finally sprays out from the spray hole 32 at the front end of the second-level nozzle 30. Of course, in other embodiments, it is also possible to adopt: a fixed water pipe (not shown) is provided in the fixed nozzle 10, a first-level water pipe (not shown) is provided in the first-level nozzle 20, and a second-level water pipe (not shown) is provided in the second-level nozzle 30; the fixed water pipe, the first-level water pipe and the second-level water pipe are connected in sequence to form a waterway, and when the first-level nozzle 20 is extended or retracted relative to the fixed nozzle 10, the first-level water pipe is correspondingly extended or retracted relative to the fixed water pipe; when the second-level nozzle 30 is extended or retracted relative to the first-level nozzle 20, the second-level water pipe is correspondingly extended or retracted relative to the first-level water pipe.

[0072] See also Figure 2 , Figure 7 and Figure 8 In this embodiment, the fixed nozzle 10 is further provided with a water inlet joint 12 which is connected to the inner cavity of the fixed nozzle 10, the water inlet joint 12 is connected to the water source, the water inlet joint 12 is located outside the fixed nozzle 10, and the water inlet joint 12 is formed separately from the fixed nozzle 10. Of course, in other embodiments, the water inlet joint 12 and the fixed nozzle 10 can also be formed integrally.

[0073] See also Figures 3 to 5 In this embodiment, a first limiting protrusion 14 is provided on the inner wall of the fixed nozzle 10, and a first limiting groove 23 is provided on the outer wall of the first-stage nozzle 20 in the axial direction. The first limiting protrusion 14 is embedded in the first limiting groove 23 and slides along the first limiting groove 23; a second limiting protrusion 24 is provided on the inner wall of the first-stage nozzle 20, and a second limiting groove 34 is provided on the outer wall of the second-stage nozzle 30 in the axial direction. The second limiting protrusion 24 is embedded in the second limiting groove 34 and slides along the second limiting groove 34. In this way, the fixed nozzle 10, the first-stage nozzle 20 and the second-stage nozzle 30 are mutually limited in the circumferential direction to prevent the fixed nozzle 10, the first-stage nozzle 20 and the second-stage nozzle 30 from rotating, so that the three can only slide relative to each other in the axial direction. Of course, in other embodiments, the cross-sectional shape of the inner cavity of the fixed nozzle 10, the first-stage nozzle 20 and the second-stage nozzle 30 in the radial direction may be non-circular. In this way, the purpose of limiting each other in the circumferential direction of the fixed nozzle 10, the first-stage nozzle 20 and the second-stage nozzle 30 can be achieved, thereby preventing the fixed nozzle 10, the first-stage nozzle 20 and the second-stage nozzle 30 from rotating, so that the three can only slide relative to each other axially.

[0074] See also Figure 1 and Figure 4In this embodiment, the driving member is a motor 40 capable of forward and reverse rotation. The motor 40 is located behind the fixed nozzle 10, and the output shaft 41 of the motor 40 is coaxially rotated and linked with the rear end of the primary screw 50. Specifically, a fixed sleeve 13 is provided at the rear end of the fixed nozzle 10, and the rear end of the primary screw 50 extends out of the fixed sleeve 13 to be rotationally connected with the output shaft 41 of the motor 40.

[0075] In this embodiment, the fixed nozzle 10 is integrally formed with a bracket 80 and fixedly connected. Of course, the fixed nozzle 10 and the bracket 80 can also be formed separately and then fixedly connected. The motor 40 is also fixedly connected to the bracket 80.

[0076] In this embodiment, the injection hole 32 is formed on the top wall of the front end of the secondary nozzle 30 .

[0077] The expansion and contraction process of the nozzle unit in this embodiment is as follows:

[0078] See also Figure 3 and Figure 5 , at this time, the nozzle unit is in the initial position, that is, the secondary nozzle 30 is retracted into the primary nozzle 20, and the primary nozzle 20 is retracted into the fixed nozzle 10;

[0079] When the motor 40 rotates forward, the output shaft 41 of the motor 40 drives the primary screw 50 to rotate forward. Under the cooperation of the primary external thread 51 on the primary screw 50 and the primary internal thread 21 on the primary nozzle 20, the primary nozzle 20 extends relative to the fixed nozzle 10. During the extension of the primary nozzle 20 relative to the fixed nozzle 10, the primary nozzle 20 drives the secondary nozzle 30 and the secondary screw 60 to extend relative to the fixed nozzle 10. At the same time, when the primary screw 50 rotates forward, it also drives the secondary screw 60 to rotate forward. Under the cooperation of the secondary external thread 61 on the secondary screw 60 and the secondary internal thread 31 on the secondary nozzle 30, the secondary nozzle 30 extends relative to the primary nozzle 20. See FIG. Figure 1 , Figure 6 , Figure 7 and Figure 8 As shown, at this time, the primary nozzle 20 and the secondary nozzle 30 are both extended to the right position, and the spray hole 32 at the front end of the secondary nozzle 30 is exposed from the primary nozzle 20 so as to spray water toward the human body;

[0080] When the motor 40 rotates in the reverse direction, the output shaft 41 of the motor 40 drives the primary screw 50 to rotate in the reverse direction. Under the cooperation of the primary external thread 51 on the primary screw 50 and the primary internal thread 21 on the primary nozzle 20, the primary nozzle 20 retracts relative to the fixed nozzle 10. At the same time, when the primary screw 50 rotates in the reverse direction, it also drives the secondary screw 60 to rotate in the reverse direction. Under the cooperation of the secondary external thread 61 on the secondary screw 60 and the secondary internal thread 31 on the secondary nozzle 30, the secondary nozzle 30 retracts relative to the primary nozzle 20, thereby returning to the fixed nozzle 10. Figure 3 and Figure 5 In the initial position shown, the injection hole 32 at the front end of the secondary nozzle 30 is retracted into the primary nozzle 20, so that the injection hole 32 is not easy to accumulate dirt and is more hygienic.

[0081] In other implementations, a three-stage telescopic nozzle and a three-stage screw, or a four-stage telescopic nozzle and a four-stage screw, or a five-stage telescopic nozzle and a five-stage screw, etc. may also be used, and are not limited to the two-stage telescopic nozzle and the two-stage screw in the embodiment.

[0082] In other implementations, the water channel may also directly adopt a hose (not shown), the rear end of the hose is fixedly connected to the rear end of the fixed nozzle 10 , and the front end of the hose is connected to the secondary nozzle 30 .

[0083] (II) The switching structure and its working process are described in detail as follows:

[0084] When the nozzle unit is in the initial position, the driving member can drive the multiple stages of telescopic nozzles to retract to the retracted position relative to the fixed nozzle 10 through the multiple stages of screws. Specifically, the motor 40 can drive the primary nozzle 20 and the secondary nozzle 30 to retract to the retracted position relative to the fixed nozzle 10 through the primary screw 50 and the secondary screw 60 (see Figure 4 The switching assembly 100 is disposed at the front end of the secondary nozzle 30 , and the switching assembly 100 is driven by retracting the secondary nozzle 30 to the retracted position to realize the switching function of the waterway.

[0085] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Fig. 9 The switching assembly 100 includes a sliding member 101, which drives several stages of telescopic nozzles to retract backward to the retracted position each time so that the switching assembly 100 drives the sliding member 101 to switch between the first cleaning position and the second cleaning position once, thereby controlling the water path to be connected to different injection holes 32.

[0086] In this embodiment, see Fig. 9 The switching assembly 100 further includes a spring-pressing structure 102 similar to a cylindrical pen. Each time the secondary nozzle 30 is retracted to the retracted position, the front end of the primary screw 50 directly presses or indirectly presses a button 1021 of the spring-pressing structure 102 through the sliding member 101, so that when the secondary nozzle 30 is reset to the initial position, the button 1021 of the spring-pressing structure 102 pops out or retracts. The spring-pressing structure 102 may be made of the existing known technology and will not be described in detail.

[0087] like Figure 5As shown, when the button 1021 pops out, it drives the sliding member 101 to slide from the first cleaning position to the second cleaning position; Figure 3 As shown, when the button is retracted, the sliding member 101 is in the first washing position. Specifically, in this embodiment, the sliding member 101 is a sliding sleeve, and a water hole 1011 connected to the water path is provided on the side wall of the sliding sleeve, and the spray hole 32 includes a hip wash spray hole 321 and a woman wash spray hole 322. When the sliding sleeve is in the first washing position, the water hole 1011 is connected to the woman wash spray hole 322, and when the sliding sleeve is in the second washing position, the water hole 1011 is connected to the hip wash spray hole 321.

[0088] In this embodiment, a position sensor (not shown) and a controller (not shown) are also included. The controller is electrically connected to the motor and the position sensor, respectively. The position sensor is used to sense the position of the sliding member. The position sensor can be a Hall sensor, a capacitive sensor, an inductive sensor, an infrared sensor, etc. The controller determines the connection state between the water channel and the spray hole according to the position signal obtained by the position sensor, and controls the spray pipe unit to retract backward before extending forward relative to the bracket 80 according to the user's instruction.

[0089] In this embodiment, when washing the human body, whether it is necessary to switch the water path of the switching component 100 can be judged and controlled by the following water path switching method, which includes the following steps:

[0090] S1: obtaining the user instruction and the position of the sliding member of the switching assembly when the nozzle unit is in the initial position through the controller, and executing step S2 when the controller determines that the spray hole connected to the water path matches the user instruction, and executing step S3 when the controller determines that the spray hole connected to the water path does not match the user instruction;

[0091] S2: The controller controls the driving member so that the nozzle unit directly extends forward;

[0092] S3: The controller first controls the driving member to make the nozzle unit retract backward to drive the switching component to switch, and then controls the driving member to make the nozzle unit extend forward.

[0093] The switching process of this embodiment is briefly described as follows:

[0094] See also Figure 3At this time, the nozzle unit is in the initial position, the nozzle unit is neither extended nor retracted relative to the bracket 80, the button 1021 of the switching assembly 100 is retracted, the sliding member 101 is in the first cleaning position, and the water hole 1011 on the sliding member 101 is connected to the women's washing spray hole 322, that is, the water path is connected to the women's washing spray hole 322. When cleaning starts, the position of the slider 101 is first sensed by the position sensor, and the position sensor sends the position signal of the slider 101 to the controller. The controller then determines the connectivity between the water circuit and the spray hole 32 according to the position signal obtained by the position sensor, thereby determining whether the spray hole 32 connected to the water circuit at this time matches the corresponding function (butt wash function or feminine wash function) selected by the user. If the two match (for example, the water circuit is connected to the butt wash spray hole 321, and the user selects the butt wash function), the motor 40 is directly used to drive the nozzle unit to extend forward relative to the bracket 80 to perform cleaning of the corresponding function; if the two do not match (for example, the water circuit is connected to the butt wash spray hole 321, and the user selects the feminine wash function), the motor 40 is first controlled to make the nozzle unit retract backward to drive the switching component 100 to switch the water circuit, and then the motor 40 is controlled to make the nozzle unit extend forward to perform cleaning of the corresponding function.

[0095] See also Figure 4 When the user's instruction is a hip wash instruction, the connection state between the water path and the feminine wash spray hole 322 does not match the user's instruction, so when the water path needs to be switched, the motor 40 drives the spray pipe unit to move backward relative to the bracket 80 (such as Figure 4 As shown in the direction of the arrow, the secondary nozzle 30 is retracted to the retracted position, and the front end of the primary screw 50 indirectly presses the button 1021 of the spring-pressing structure 102 through the sliding member 101, so that the button 1021 of the spring-pressing structure 102 is ejected;

[0096] like Figure 5 As shown, when the button 1021 pops out, it drives the sliding member 101 to slide from the first cleaning position to the second cleaning position, so that the water path is connected to the butt wash spray hole 321, and the water in the water path is sprayed out through the butt wash spray hole 321 to realize the butt wash function.

[0097] In other embodiments, the position sensor may not be provided, so that the controller can memorize the position of the sliding member of the switching assembly when the nozzle unit was reset to the initial position last time to form memory information. The controller controls whether the nozzle unit retracts backward before extending forward relative to the bracket 80 according to the user's instructions and memory information. In this way, it is also possible to determine whether to switch the water path.

[0098] See also Fig.15The third embodiment of the present invention also provides a toilet, comprising a toilet body 1, a toilet cover 2 and a toilet body cleaning device 3, wherein the toilet body cleaning device 3 is arranged on the toilet cover 2, and the toilet body cleaning device 3 comprises the water channel switching structure of the toilet body cleaning device described in any one of the above items, and adopts the above water channel switching method to perform water channel switching.

[0099] Fig.15 The schematic diagram shows that the spray pipe unit of the toilet human body cleaning device 3 is in an extended state, at which time the toilet human body cleaning device 3 can spray and clean the human body.

[0100] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A water channel switching structure of a toilet human body cleaning device, characterized in that: include: Bracket; The nozzle unit comprises a fixed nozzle and a plurality of telescopic nozzles which are sequentially sleeved from the outside to the inside, wherein the fixed nozzle is fixedly connected to the bracket, a water channel is provided in the fixed nozzle and the plurality of telescopic nozzles, and a spray hole which is connected to the water channel is provided at the front end of the last nozzle of the plurality of telescopic nozzles; A driving unit, comprising a driving member and a plurality of screw rods, wherein the driving member is fixedly connected to the bracket, the number of the screw rods is the same as the number of the telescopic nozzles, and the driving member drives the telescopic nozzles of the plurality of stages to telescope through the screw rods of the plurality of stages, and when the nozzle unit is in an initial position, the driving member can drive the telescopic nozzles of the plurality of stages to retract backward to a retracted position relative to the fixed nozzle through the screw rods of the plurality of stages; A switching assembly is arranged at the front end of the last-stage nozzle, and the switching assembly includes a sliding member. By driving the telescopic nozzles of several stages to retract backward to the retracted position each time, the switching assembly drives the sliding member to switch between the first cleaning position and the second cleaning position once, thereby controlling the water path to be connected to different injection holes.

2. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: The switching assembly also includes a spring-press structure similar to a cylindrical pen. Each time the final-stage nozzle is retracted to the retracted position, the front end of the first-stage screw of the several stages of the screw directly presses or indirectly presses the button of the spring-press structure through the sliding member, so that the button of the spring-press structure pops out or retracts when the final-stage nozzle is reset to the initial position. When the button pops out, it drives the sliding member to slide from the first cleaning position to the second cleaning position. When the button retracts, the sliding member is in the first cleaning position.

3. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: The sliding member is a sliding sleeve, and a water hole connected to the water channel is provided on the side wall of the sliding sleeve. The spray holes include a hip wash spray hole and a women's wash spray hole. When the sliding sleeve is located at the first cleaning position, the water hole is connected to the women's wash spray hole. When the sliding sleeve is located at the second cleaning position, the water hole is connected to the hip wash spray hole.

4. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: The telescopic nozzle includes a primary nozzle and a secondary nozzle, and correspondingly, the screw includes a primary screw and a secondary screw. The driving member drives the primary screw to rotate, and the primary screw in turn drives the secondary screw to rotate. When the primary screw rotates, it drives the primary nozzle to telescope relative to the fixed nozzle. When the primary nozzle telescopes relative to the fixed nozzle, it drives the secondary nozzle and the secondary screw to telescope relative to the fixed nozzle. When the secondary screw rotates, it drives the secondary nozzle to telescope relative to the primary nozzle.

5. The water channel switching structure of the toilet human body cleaning device according to claim 4, characterized in that: A primary external thread is axially provided on the outer wall of the primary screw, the secondary screw is a hollow structure, and a secondary external thread is axially provided on the outer wall of the secondary screw, a primary internal thread threadedly matched with the primary external thread is provided at the rear end of the primary nozzle, and a secondary internal thread matched with the secondary external thread is provided on the inner wall of the secondary nozzle; the rear end of the primary screw is transmission-connected with the driving member, the rear end of the primary screw and the rear end of the fixed nozzle are relatively limited in the axial direction, the rear end of the secondary screw and the rear end of the primary nozzle are relatively limited in the axial direction, the primary nozzle and the secondary nozzle are in a retracted state, the threaded section of the secondary screw is sleeved in the inner cavity of the secondary nozzle, and the threaded section of the primary screw is sleeved in the inner cavity of the secondary screw.

6. The water channel switching structure of the toilet human body cleaning device according to claim 5, characterized in that: The secondary internal thread is arranged on the inner wall of the rear end of the secondary nozzle, and the rear end of the primary nozzle is provided with a primary sleeve, and the primary internal thread is arranged on the inner wall of the primary sleeve. The secondary screw is coaxially arranged with the primary sleeve, and the primary screw passes through the primary sleeve and extends into the inner cavity of the secondary screw.

7. The water channel switching structure of the toilet human body cleaning device according to claim 5, characterized in that: One of the outer wall of the primary screw and the inner wall of the secondary screw is provided with a slide groove extending along the axial direction, and the other is provided with a convex rib extending along the axial direction. The convex rib is embedded in the slide groove and slides along the slide groove, so that the primary screw and the secondary screw can be limited in the circumferential direction and can slide in the axial direction.

8. The water channel switching structure of the toilet human body cleaning device according to claim 5, characterized in that: The waterway can be extended and retracted along with the extension and retraction of the primary nozzle and the secondary nozzle. A fixed water pipe is arranged in the fixed nozzle, a primary water pipe is arranged in the primary nozzle, and a secondary water pipe is arranged in the secondary nozzle. The fixed water pipe, the primary water pipe and the secondary water pipe are connected in sequence to form the waterway. When the primary nozzle is extended and retracted relative to the fixed nozzle, the primary water pipe is correspondingly extended and retracted relative to the fixed water pipe. When the secondary nozzle is extended and retracted relative to the primary nozzle, the secondary water pipe is correspondingly extended and retracted relative to the primary water pipe; or, The inner cavity of the fixed nozzle, the inner cavity of the first-stage nozzle and the inner cavity of the second-stage nozzle form the waterway.

9. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: The waterway can be extended and retracted along with the extension and retraction of the telescopic nozzles of several stages, or the waterway adopts a hose, the rear end of which is fixedly connected to the rear end of the fixed nozzle, and the front end of which is connected to the last stage nozzle.

10. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: The thread pitches of the screws of several stages are equal; the driving member is a motor capable of forward and reverse rotation, the motor is located behind the fixed nozzle, and the output shaft of the motor is coaxially rotated and linked with the rear end of the first-stage screw of the screws of several stages.

11. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: It also includes a position sensor and a controller, the driving member is a motor, and the controller is electrically connected to the motor and the position sensor respectively. The position sensor is used to sense the position of the sliding member. The controller determines the connection status between the water path and the injection hole according to the position signal obtained by the position sensor, and controls the nozzle unit to retract backward before extending forward relative to the bracket according to the user's instructions.

12. The water channel switching structure of the toilet human body cleaning device according to claim 1, characterized in that: It also includes a controller, the driving member is a motor, and the motor is electrically connected to the controller. The controller can memorize the position of the sliding member of the switching assembly when the nozzle unit was reset to the initial position last time to form memory information. The controller controls whether the nozzle unit retracts backward before extending forward relative to the bracket according to the user's instructions and the memory information.

13. A waterway switching method for a toilet human body cleaning device, using the waterway switching structure of a toilet human body cleaning device according to any one of claims 1 to 12, the waterway switching method comprising the following steps: S1: acquiring the user instruction and the position of the sliding member of the switching assembly when the nozzle unit is in the initial position through the controller, and executing step S2 when the controller determines that the spray hole connected to the water path matches the user instruction, and executing step S3 when the controller determines that the spray hole connected to the water path does not match the user instruction; S2: The controller controls the driving member so that the nozzle unit directly extends forward; S3: The controller first controls the driving member to make the nozzle unit retract backward to drive the switching component to switch, and then controls the driving member to make the nozzle unit extend forward.

14. A toilet seat, comprising a toilet seat body, a toilet seat cover and a toilet seat human body cleaning device, characterized in that: The toilet human body cleaning device comprises the water channel switching structure of the toilet human body cleaning device according to any one of claims 1 to 12, or the toilet human body cleaning device adopts the water channel switching method according to claim 13.

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