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 for 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 from the outside to the inside, wherein the fixed nozzle and the plurality of telescopic nozzles are provided with interconnected waterways, and the front ends of the last nozzles of the plurality of telescopic nozzles are provided with spray holes connected with 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, 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 an initial position, the driving member can drive the telescopic nozzles of the plurality of stages to retract backward to a retracted position through the screws of the plurality of stages; a switching component, which is arranged at the front end of the last nozzle, and the switching component comprises a switching member, which drives the telescopic nozzles of the plurality of stages to retract backward to a retracted position to drive the switching activity of the switching member, thereby controlling the waterway to be connected with different spray holes.

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.

[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] The switching assembly is arranged at the front end of the last stage nozzle, and the switching assembly includes a switching member, which drives the telescopic nozzles of several stages to retract backward to the retracted position to drive the switching activity of the switching member and thus control the waterway to be connected with 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 presses the button of the spring-press structure once, thereby causing the spring-press structure to drive the switching member to switch once.

[0012] A further preferred solution is that the switching member is a rotatable rotating member, and after each of the telescopic nozzles of several stages are retracted to the retracted position and reset to the initial position, the switching assembly drives the rotating member to rotate a predetermined angle to control the water path to be connected to different injection holes.

[0013] A further preferred solution is that the rotating part is a water dividing plate, and the water dividing plate is provided with a water flow hole connected to the inner cavity of the final-stage nozzle, and the inner cavity of the final-stage nozzle forms a part of the water path. The switching assembly also includes a water flow seat fixedly arranged in the front end of the final-stage nozzle, and the water flow seat is provided with water flow channels of the same number as the injection holes, and the water outlet end of each water flow channel is connected to the corresponding injection hole. When the water dividing plate rotates, the water flow holes are switchedly connected to the water inlet ends of each water flow channel.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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,

[0019] 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.

[0020] 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.

[0021] 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.

[0022] A further preferred solution is that it also includes a position sensor and a controller, the driving member is a motor, the controller is electrically connected to the motor and the position sensor, respectively, the position sensor is used to sense the position of the rotating member of the switching assembly, the controller determines the connectivity status between the water path and the spray hole according to 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.

[0023] 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 rotating 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.

[0024] 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:

[0025] S1: acquiring the user instruction and the position of the rotating part 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;

[0026] S2: The controller controls the driving member so that the nozzle unit directly extends forward;

[0027] 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.

[0028] 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.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 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.

[0031] The present invention sets a switching component at the front end of the final nozzle, wherein the switching component includes a switching part, and drives the telescopic nozzles of several stages to retract backward to the retracted position to drive the switching activity of the switching part, thereby controlling the water path to be connected to different injection 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.

[0032] 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

[0033] 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:

[0034] 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;

[0035] Figure 2 Draws Figure 1 Exploded diagram of

[0036] Figure 3 A cross-sectional view of an embodiment of the present invention is shown, when the nozzle unit is in an initial position;

[0037] 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;

[0038] Figure 5 A cross-sectional view of an embodiment of the present invention is shown, in which the nozzle unit is in an extended state;

[0039] Figure 6 A cross-sectional view of an embodiment of the present invention is depicted, in which the nozzle unit is in an extended state and water is discharged from the buttocks washing spray hole;

[0040] Figure 7 for Figure 6 The enlarged view of point A in the middle;

[0041] Figure 8 A partial cross-sectional view of an embodiment of the present invention is shown, at this time, water is discharged from the spray hole of the female wash basin;

[0042] Fig. 9 A partial cross-sectional view of an embodiment of the present invention is depicted, in which water is discharged from the enema spray hole;

[0043] Fig.10 A three-dimensional assembly diagram of a switching component according to an embodiment of the present invention is shown;

[0044] Fig.11 A three-dimensional structural diagram of a water-dividing sheet according to an embodiment of the present invention is depicted;

[0045] Fig.12 A three-dimensional structural diagram of a water filter seat according to an embodiment of the present invention is shown;

[0046] Fig.13 A three-dimensional structural diagram of a shell of a snap-action structure according to an embodiment of the present invention is depicted;

[0047] Fig.14 A three-dimensional structural diagram of a rotor with a spring-press structure according to an embodiment of the present invention is depicted;

[0048] Fig.15 A three-dimensional structural diagram of a button with a snap-click structure according to an embodiment of the present invention is depicted;

[0049] Fig.16 A three-dimensional structural diagram of a primary sleeve according to an embodiment of the present invention is depicted;

[0050] Fig.17 A three-dimensional structural diagram of a two-stage nozzle according to an embodiment of the present invention is depicted;

[0051] Fig.18 A three-dimensional diagram of a primary screw rod according to an embodiment of the present invention is shown;

[0052] Fig.19 A three-dimensional diagram of a secondary screw rod according to an embodiment of the present invention is shown;

[0053] Fig. 20 A cross-sectional view of a secondary screw according to an embodiment of the present invention is shown;

[0054] Fig.21 A schematic diagram showing a toilet human body cleaning device of the present invention installed on a toilet is shown.

[0055] The accompanying drawings are marked as follows:

[0056] 1- Toilet seat;

[0057] 2- Toilet seat cover;

[0058] 3- Toilet body cleaning device:

[0059] 10-fixed nozzle; 12-water inlet joint; 13-fixed sleeve; 14-first limiting protrusion;

[0060] 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;

[0061] 30-secondary nozzle; 31-secondary internal thread; 311-secondary flow slot; 32-injection hole; 321-hip wash injection hole; 322-female wash injection hole; 323-enema injection hole; 34-second limit slot;

[0062] 40-motor; 41-output shaft of the motor;

[0063] 50-first-stage screw; 51-first-stage external thread; 52-slideway;

[0064] 60-secondary screw; 61-secondary external thread; 62-convex rib;

[0065] 70-Blocking piece;

[0066] 80-Stand;

[0067] 91-primary sealing ring; 92-secondary sealing ring;

[0068] 100 - switching assembly: 101 - rotating part; 1011 - water hole; 102 - spring-pressing structure; 1021 - button; 1022 - housing; 1023 - rotor; 1024 - spring; 103 - water seat; 1031 - water channel. DETAILED DESCRIPTION

[0069] 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.

[0070] See also Figures 1 to 20 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.

[0071] 1. The telescopic structure and its working process are described in detail as follows:

[0072] See also Figure 1 , Figure 2 ,and Figure 6The 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 6 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.

[0073] See also Figure 2 and Figure 3 The 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.

[0074] 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.

[0075] 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.

[0076] See also Figure 2 , Figure 3 , Fig.16 and Fig.17 In 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.17 ), the water in the primary nozzle 20 enters the secondary nozzle 30 through the secondary flow groove 311. The rear end of the primary nozzle 20 is fixedly provided with a primary sleeve 22, the primary internal thread 21 is provided on the inner wall of the primary sleeve 22, and the primary sleeve 22 is provided with a primary flow hole 221 (see Fig.16 ), the water flow of the fixed nozzle 10 enters the primary nozzle 20 through the primary flow hole 221, the outer wall of the primary sleeve 22 is provided with a primary sealing ring 91 that seals with the inner wall of the fixed nozzle 10, and the outer wall of the secondary nozzle 30 is provided with a secondary sealing ring 92 that seals 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 passes through the primary sleeve 22 and then extends into the inner cavity of the secondary screw 60. 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.

[0077] See also Fig.18 and Fig.19 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.

[0078] See also Figure 3 and Figure 6 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 6, 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.

[0079] See also Figure 1 , Figure 2 and Figure 5 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.

[0080] See also Figure 3 and Figure 6 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.

[0081] See also Figure 1 and Figure 3In 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.

[0082] 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.

[0083] In this embodiment, the injection hole 32 is opened on the top wall of the front end of the secondary nozzle 30. There are three injection holes 32 and they are arranged at intervals along the axial direction of the secondary nozzle 30. From back to front, they are the buttocks washing injection hole 321, the enema injection hole 323 and the women's washing injection hole 322.

[0084] The expansion and contraction process of the nozzle unit in this embodiment is as follows:

[0085] See also Figure 3 , 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;

[0086] 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 5 and Figure 6 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;

[0087] 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 Initial position shown.

[0088] 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.

[0089] 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 .

[0090] (II) The switching structure and its working process are described in detail as follows:

[0091] 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.

[0092] The switching assembly 100 includes a switching member, which drives several stages of telescopic nozzles to retract backward to the retracted position to drive the switching activity of the switching member and thereby control the water path to be connected to different injection holes 32 .

[0093] For details, see Figure 1 , Figure 3 and Fig.10 The switching member is a rotatable rotating member 101. After the telescopic nozzles of several stages are retracted to the retracted position and reset to the initial position each time, the switching assembly 100 drives the rotating member 101 to rotate a predetermined angle to control the water path to be connected to different injection holes 32. The predetermined angle can be set as needed, such as 45°, 90°, 180°, etc.

[0094] In this embodiment, see Figure 1 , Figure 3 , Fig.13, Fig.14 and Fig.15 The switching assembly 100 also includes a spring-pressing structure 102 similar to a cylindrical pen. Each time the final nozzle (secondary nozzle 30) is retracted to the retracted position, the front end of the first-stage screw (primary screw 50) of the plurality of stages of the screws presses the button 1021 of the spring-pressing structure 102, so that the spring-pressing structure 102 drives the rotating member 101 to rotate by a predetermined angle. The spring-pressing structure 102 here can adopt the existing well-known technology, which mainly includes a button 1021, a housing 1022, a rotor 1023 and a spring 1024. The housing 1022 and the rotor 1023 are respectively provided with ratchets. Other specific structures and working principles are not described in detail here.

[0095] like Figure 1 , Fig.10 , Fig.11 and Fig.12 As shown, the rotating member 101 is a water dividing plate 101, and a water hole 1011 connected to the inner cavity of the secondary nozzle 30 is provided on the water dividing plate 101, and the inner cavity of the secondary nozzle 30 forms a part of the water path. The switching assembly 100 also includes a water passing seat 103 fixedly arranged in the front end of the secondary nozzle 30, and the water passing seat 103 is provided with the same number of water passing channels 1031 as the injection holes 32, that is, there are also three water passing channels 1031, namely, the buttocks washing water passing channel, the women's washing water passing channel and the enema water passing channel, and the water outlet end of each water passing channel 1031 is connected to the corresponding injection hole 32, that is, the buttocks washing water passing channel is connected to the buttocks washing injection hole 321, the women's washing water passing channel is connected to the women's washing injection hole 322, and the enema water passing channel is connected to the enema injection hole 323. When the water dividing plate 101 rotates, the water holes 1011 are switched to be connected with the water inlet ends of the water passages 1031 , so that the water paths are switched to be connected with the injection holes 32 through the water passages 1031 .

[0096] 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 rotating part. 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 whether the spray pipe unit retracts backward before extending forward relative to the bracket 80 according to the user's instruction.

[0097] 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:

[0098] S1: obtaining the user instruction and the position of the rotating part 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;

[0099] S2: The controller controls the driving member so that the nozzle unit directly extends forward;

[0100] 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.

[0101] The switching process of this embodiment is briefly described as follows:

[0102] See also Figure 3 At this time, the nozzle unit is in the initial position, the nozzle unit is neither extended nor retracted relative to the bracket 80, and the water hole 1011 on the rotating member 101 is connected to the injection hole 32 corresponding to the water channel 1031 through one of the water channels 1031. When cleaning starts, the position of the rotating part 101 is first sensed by the position sensor, and the position sensor sends the position signal of the rotating part 101 to the controller. The controller then determines the connection state 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 selected by the user (buttocks washing function or feminine washing function or enema function). If the two match (for example, the water circuit is connected to the buttocks washing spray hole 321, and the user selects the buttocks washing 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 buttocks washing spray hole 321, and the user selects the feminine washing function or enema 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.

[0103] See also Figure 4 Assuming that when the user's instruction is a hip wash instruction, and the water path is connected to the feminine wash spray hole 322 at this time, the connection state between the water path and the spray hole 32 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 4As shown in the direction of the arrow in the figure, the secondary nozzle 30 is retracted to the retracted position, and the front end of the primary screw 50 presses the button 1021 of the spring-pressing structure 102, so that the rotor 1023 of the spring-pressing structure 102 rotates by a predetermined angle, and the rotor 1023 then drives the water-dividing sheet 101 to rotate by a predetermined angle until the water-passing hole 1011 is connected with the buttocks-washing spray hole 321, and the water in the waterway is sprayed out through the buttocks-washing spray hole 321 to realize the buttocks-washing function;

[0104] In other embodiments, the position sensor may not be provided, so that the controller can memorize the position of the rotating part 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.

[0105] See also Fig.21 The 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.

[0106] Fig.21 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.

[0107] 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 component is arranged at the front end of the last-stage nozzle, and the switching component includes a switching member, which drives the telescopic nozzles of several stages to retract backward to the retracted position to drive the switching activity of the switching member and thereby control the waterway 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 nozzle is retracted to the retracted position, the front end of the first-stage screw of several stages of the screw presses the button of the spring-press structure once, so that the spring-press structure drives the switching member to switch once.

3. The water channel switching structure of the toilet human body cleaning device according to claim 1 or 2, characterized in that: The switching member is a rotatable rotating member. After the telescopic nozzles of several stages are retracted to the retracted position and reset to the initial position each time, the switching assembly drives the rotating member to rotate a predetermined angle to control the water path to be connected to different injection holes.

4. The water channel switching structure of the toilet human body cleaning device according to claim 3, characterized in that: The rotating part is a water dividing plate, and the water dividing plate is provided with a water flow hole connected to the inner cavity of the final stage nozzle. The inner cavity of the final stage nozzle forms a part of the water path. The switching component also includes a water flow seat fixedly arranged in the front end of the final stage nozzle, and the water flow seat is provided with water flow channels with the same number as the injection holes. The water outlet end of each water flow channel is connected to the corresponding injection hole. When the water dividing plate rotates, the water flow holes are switched to be connected to the water inlet ends of each water flow channel.

5. 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.

6. The water channel switching structure of the toilet human body cleaning device according to claim 5, 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.

7. The water channel switching structure of the toilet human body cleaning device according to claim 6, 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.

8. The water channel switching structure of the toilet human body cleaning device according to claim 6, 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.

9. 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.

10. 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.

11. 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.

12. 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 rotating member of the switching component. The controller determines the connection state between the water channel 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.

13. 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 part is a motor, and the motor is electrically connected to the controller. The controller can memorize the position of the rotating part 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.

14. 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 13, the waterway switching method comprising the following steps: S1: acquiring the user instruction and the position of the rotating part 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.

15. 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 13, or the toilet human body cleaning device adopts the water channel switching method according to claim 14.

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