Water path switching structure and water path switching method of a toilet and its body cleaning device

Abstract

The present invention discloses a waterway switching structure and a waterway switching method for a toilet and its human body cleaning device. The waterway switching structure includes: a fixed bracket; a driving motor disposed on the fixed bracket; a nozzle assembly slidably disposed on the fixed bracket in the front-back direction. The nozzle assembly is provided with at least two water passing channels and two water spraying holes; a transmission assembly, the driving motor drives the nozzle assembly to perform telescopic movement in the front-back direction on the fixed bracket through the transmission assembly; a switching assembly disposed between the rear end of the nozzle assembly and the rear end of the fixed bracket. The switching assembly includes a water inlet and a plurality of water outlets. At least two of the plurality of water outlets are respectively connected to the water inlet ends of at least two of the water passing channels. The driving motor drives the nozzle assembly to move backward relative to the fixed bracket to drive the switching assembly, so that the water inlet is selectively connected to each water outlet. The present invention realizes waterway switching through a mechanical structure, saves costs, and has a simple structure.

Description

Technical Field

[0001] The present invention relates to the technical field of sanitary ware, and particularly to a waterway switching structure and method for a toilet body cleaning device, and a toilet having the waterway switching structure or method. Background Art

[0002] Existing intelligent toilets generally are provided with a toilet body cleaning device. The toilet body cleaning device usually includes a fixed bracket and a nozzle assembly telescopically mounted on the fixed bracket. After the nozzle assembly extends out, it can spray cleaning water towards the human body. In order to make the cleaning function more diverse, the nozzle assembly is usually provided with a hip washing waterway and a feminine washing waterway. Therefore, a waterway switching structure is required to switch between the hip washing waterway and the feminine washing waterway. The prior art usually sets a waterway reversing valve or a solenoid valve upstream of the nozzle assembly, and realizes the switching by driving the valve core of the waterway reversing valve by a motor or controls the on-off of the corresponding waterway by opening and closing the solenoid valve. However, the reversing valve and the solenoid valve have a high cost, which is not conducive to reducing costs and improving product competitiveness. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a waterway switching structure and method for a toilet body cleaning device, and a toilet having the waterway switching structure or method, which can achieve the purpose of reducing costs, and has a simple structure and reliable functions.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A waterway switching structure for a toilet body cleaning device, comprising:

[0006] A fixed bracket;

[0007] A driving motor, provided on the fixed bracket;

[0008] A nozzle assembly, slidably arranged on the fixed bracket back and forth. At least two water passing channels are provided on the nozzle assembly, and water spraying holes corresponding to and communicating with each of the water passing channels are provided at the front end of the nozzle assembly;

[0009] A transmission assembly, the driving motor drives the nozzle assembly to move back and forth telescopically on the fixed bracket through the transmission assembly;

[0010] The switching component is arranged between the rear end of the nozzle component and the rear end of the fixed bracket. The switching component includes a water inlet and a plurality of water outlets. At least two of the plurality of water outlets are respectively connected and communicated with the water inlet ends of at least two of the water passing channels. The driving motor drives the nozzle component to move backward relative to the fixed bracket to drive the switching component, so that the water inlet is switched to be connected and communicated with each of the water outlets.

[0011] A further preferred solution is that the switching component includes a switching shell fixed to the rear end of the nozzle component, a switching piece rotatably arranged in the inner cavity of the switching shell, a ratchet wheel rotatably arranged on the switching shell, a stop ratchet tooth fixed to the switching shell, and a ratchet wheel driving part fixed to the rear end of the fixed bracket. The water inlet and the water outlets are arranged on the switching shell. The ratchet wheel drives the switching piece to rotate. When the switching piece rotates, it controls the water inlet to be switched to be connected and communicated with each of the water outlets. When the nozzle component moves backward relative to the fixed bracket, the ratchet wheel rotates forward by a predetermined angle under the action of the ratchet wheel driving part. The stop ratchet tooth prevents the ratchet wheel from rotating backward. When the nozzle component moves forward relative to the fixed bracket, the ratchet wheel driving part gives way to the ratchet wheel.

[0012] A further preferred solution is that the switching component further includes a switching gear coaxially arranged with the ratchet wheel. The switching gear is in circumferential limit cooperation with the ratchet wheel. The ratchet wheel driving part includes a swinging part and an elastic part. The swinging part is provided with a tooth part cooperating with the switching gear. When the nozzle component moves backward relative to the fixed bracket until the switching gear cooperates with the tooth part, the switching gear and the ratchet wheel rotate forward under the limiting action of the tooth part. As the nozzle component continues to move backward, the swinging part swings, so that the elastic part generates elastic deformation. When the nozzle component moves forward relative to the fixed bracket, the swinging part swings away under the drive of the switching gear to give way to the switching gear. After the switching gear is separated from the swinging part, the elastic part drives the swinging part to reset.

[0013] A further preferred solution is that the ratchet wheel driving part adopts an elastically deformable clamping arm. The fixed end of the clamping arm is fixed to the rear end of the fixed bracket. The free end of the clamping arm is provided with a driving ratchet tooth. When the nozzle component moves backward relative to the fixed bracket until the ratchet wheel abuts against the driving ratchet tooth, the ratchet wheel rotates forward under the limiting action of the driving ratchet tooth. As the nozzle component continues to move backward, the driving ratchet tooth moves backward, so that the clamping arm generates elastic deformation. When the nozzle component moves forward relative to the fixed bracket, the driving ratchet tooth gives way to the ratchet wheel. After the ratchet wheel is separated from the driving ratchet tooth, the clamping arm elastically deforms and resets.

[0014] A further preferred solution is that the switching housing includes a main housing and a gland. The main housing has a hollow structure and an opening is formed on one side. The gland covers the opening. A transmission shaft is fixedly connected to the switching piece. The transmission shaft extends out of the gland and is fixedly connected to the ratchet wheel. The switching piece is provided with a through water hole. When the switching piece rotates, the water hole is switched to communicate with each of the water outlets correspondingly.

[0015] A further preferred solution is that the switching assembly adopts a ballpoint pen type elastic pressing assembly. The ballpoint pen type elastic pressing assembly includes a rotatably arranged switching piece or includes a switching shaft that can slide between a first position and a second position. The switching piece or the switching shaft is provided with a water hole. When the nozzle assembly moves backward relative to the fixed bracket and drives the switching assembly once, the switching piece rotates a predetermined angle or the switching shaft slides between the first position and the second position once.

[0016] A further preferred solution is that the transmission assembly includes a transmission gear and a transmission rack. The transmission gear is arranged on the fixed bracket, and the transmission rack is arranged on the nozzle assembly. The driving motor drives the transmission rack to slide through the transmission gear, and the transmission rack further drives the nozzle assembly to perform telescopic movement relative to the fixed bracket.

[0017] A further preferred solution is that it further includes a position sensor and a controller. The controller is electrically connected to the driving motor and the position sensor respectively. The position sensor is used to sense the position of the switching assembly. The controller judges the communication state between the water inlet and the water outlet according to the position signal obtained by the position sensor, and controls whether the nozzle assembly retracts backward before moving forward relative to the fixed bracket according to the user's instruction.

[0018] A further preferred solution is that it further includes a self-cleaning water passage. The water outlet includes a self-cleaning water outlet communicated with the self-cleaning water passage. When the nozzle assembly is in the initial position, the water inlet is correspondingly communicated with the self-cleaning water outlet. When the driving motor drives the nozzle assembly to retract backward to different positions before moving forward, the water inlet is switched to communicate with other water outlets except the self-cleaning water outlet correspondingly.

[0019] A further preferred solution is that it further includes a controller, the drive motor is electrically connected to the controller, the controller can memorize the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is reset to the initial position for the previous time to form memory information, and the controller controls whether the nozzle assembly retracts backward before moving forward relative to the fixed bracket according to the user's instruction and the memory information.

[0020] In addition, the present invention also provides a waterway switching method for a toilet body cleaning device, adopting the waterway switching structure of the toilet body cleaning device described in any one of the above, and the waterway switching method includes the following steps:

[0021] S1: Obtain the user instruction and the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is in the initial position through the controller. When the controller determines that the communication state of the water inlet and the water outlet matches the user instruction, step S2 is executed; when the controller determines that the communication state of the water inlet and the water outlet does not match the user instruction, step S3 is executed;

[0022] S2: The controller controls the drive motor to make the nozzle assembly directly move forward.

[0023] S3: The controller first controls the drive motor to make the nozzle assembly retract backward to drive the switching component to switch, and then controls the drive motor to make the nozzle assembly move forward.

[0024] In addition, the present invention also provides a toilet, including the toilet seat body, the toilet cover and the toilet body cleaning device. Among them, the toilet body cleaning device includes the waterway switching structure of the toilet body cleaning device described in any one of the above, or the toilet body cleaning device adopts the above waterway switching method.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The toilet body cleaning device of the present invention is provided with a switching component between the rear end of the nozzle assembly and the rear end of the fixed bracket. The switching component includes a water inlet and a plurality of water outlets. At least two of the plurality of water outlets are respectively connected to the water inlet ends of at least two of the water passing channels. The drive motor drives the switching component by driving the nozzle assembly to move backward relative to the fixed bracket, so that the water inlet is alternately connected to each water outlet, realizing the switching of the waterway. In this way, there is no need for a motor or a solenoid valve to switch the waterway, but the waterway is switched through a mechanical structure, saving costs and being beneficial to improving the product competitiveness.

[0027] The switching component includes a switching housing fixed to the rear end of the nozzle assembly, a switching piece rotatably disposed in the inner cavity of the switching housing, a ratchet wheel rotatably disposed on the switching housing, a stop ratchet tooth fixed to the switching housing, and a ratchet driving member fixed to the rear end of the fixed bracket. By driving the nozzle assembly to move backward relative to the fixed bracket, the ratchet driving member drives the ratchet wheel to rotate forward, and the stop ratchet tooth prevents the ratchet wheel from rotating backward, realizing the switching control of the switching piece. The structure is simple and the function is reliable.

[0028] The switching component further includes a switching gear coaxially arranged with the ratchet wheel. The switching gear and the ratchet wheel are in circumferential limit cooperation. The ratchet driving member includes a swinging member and an elastic member. The swinging member is provided with a tooth portion cooperating with the switching gear. The structure of the switching component is ingenious.

[0029] The ratchet driving member adopts an elastically deformable clamping arm. The fixed end of the clamping arm is fixed to the rear end of the fixed bracket, and the free end of the clamping arm is provided with a driving ratchet tooth. The structure of the switching component is ingenious.

[0030] The switching component adopts a ballpoint pen type elastic pressing component, which is easy to implement and has an ingenious design. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0032] Figure 1 The three-dimensional assembly schematic diagram of the toilet body cleaning device according to the first embodiment of the present invention is shown, and at this time, the nozzle assembly is in the initial position;

[0033] Figure 2 Shows Figure 1 exploded view of;

[0034] Figure 3 Shows Figure 1 one of the cross-sectional views of;

[0035] Figure 4 Shows Figure 1 another cross-sectional view of;

[0036] Figure 5 The schematic diagram of the nozzle assembly of the first embodiment of the present invention when it just starts to slide backward is shown;

[0037] Figure 6 The schematic diagram of the nozzle assembly of the first embodiment of the present invention when it ends sliding backward and just starts to slide forward is shown;

[0038] Figure 7 The state diagram of the nozzle assembly of the first embodiment of the present invention extending relative to the fixed bracket is shown;

[0039] Figure 8 Shows a partial schematic view of the toilet body cleaning device according to the first embodiment of the present invention;

[0040] Figure 9 Shows Figure 8 One of the sectional views of;

[0041] Figure 10 Shows Figure 8 Another sectional view of;

[0042] Figure 11 Shows an assembled schematic view of the ratchet and the switching gear according to the first embodiment of the present invention;

[0043] Figure 12 Shows a three-dimensional schematic view of the swing member according to the first embodiment of the present invention;

[0044] Figure 13 Shows a three-dimensional schematic view of the main housing of the switching housing according to the first embodiment of the present invention;

[0045] Figure 14 Shows an assembled schematic view of the switching piece and the transmission shaft according to the first embodiment of the present invention;

[0046] Figure 15 Shows a schematic view of the toilet body cleaning device according to the first embodiment of the present invention installed on the toilet, and at this time it is a state diagram in which the nozzle assembly extends relative to the fixed bracket;

[0047] Figure 16 Shows a three-dimensional assembled schematic view of the toilet body cleaning device according to the second embodiment of the present invention, and at this time the nozzle assembly is in the initial position.

[0048] Reference numerals are:

[0049] 1 - The seat of the toilet;

[0050] 2 - The cover of the toilet;

[0051] 3 - The toilet body cleaning device:

[0052] 10 - Fixed bracket; 11 - Self-cleaning nozzle;

[0053] 20 - Driving motor;

[0054] 30 - Nozzle assembly; 31 - Water passage; 32 - Spraying holes; 321 - Hip washing spraying holes; 322 - Enema spraying holes; 323 - Female washing spraying holes;

[0055] 40 - Transmission assembly; 41 - Transmission rack;

[0056] 50 - switching component; 51 - switching housing; 511 - water inlet; 512 - water outlet; 5121 - hip wash water outlet; 5122 - enema water outlet; 5123 - feminine wash water outlet; 5124 - self - cleaning water outlet; 513 - main housing; 514 - gland; 52 - switching piece; 521 - water passing hole; 53 - ratchet; 54 - anti - rotation ratchet tooth; 55 - ratchet driving part; 551 - swinging part; 5511 - tooth part; 552 - elastic part; 553 - clamping arm; 5531 - driving ratchet tooth; 56 - switching gear; 57 - transmission shaft. Detailed implementation manner

[0057] 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 will be further described in detail below with reference to the 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.

[0058] See Figures 1 to 14 , a water - path switching structure of a toilet body cleaning device provided by the first embodiment of the present invention includes:

[0059] Fixed bracket 10;

[0060] Driving motor 20, fixedly arranged on the fixed bracket 10;

[0061] Nozzle assembly 30, slidably arranged on the fixed bracket 10 in the front - and - back direction. At least two water - passing channels 31 are arranged on the nozzle assembly 30, and water - spraying holes 32 corresponding to and communicating with each water - passing channel 31 are arranged at the front end of the nozzle assembly 30;

[0062] Transmission assembly 40, the driving motor 20 drives the nozzle assembly 30 to move back and forth on the fixed bracket 10 through the transmission assembly 40;

[0063] Switching component 50, arranged between the rear end of the nozzle assembly 30 and the rear end of the fixed bracket 10. The switching component 50 includes a water inlet 511 and a plurality of water outlets 512. At least two of the plurality of water outlets 512 are respectively connected to the water inlet ends of at least two water - passing channels 31. The driving motor 20 drives the switching component 50 by driving the nozzle assembly 30 to move backward relative to the fixed bracket 10, so that the water inlet 511 is selectively connected to each water outlet 512.

[0064] See Figure 9, specifically, three water channels 31 are provided on the nozzle assembly 30 of this embodiment, namely the hip wash water channel, the feminine wash water channel, and the enema wash water channel. Correspondingly, the water spray holes 32 include the hip wash water spray holes 321, the enema water spray holes 322, and the feminine wash water spray holes 323. The hip wash water spray holes 321, the enema water spray holes 322, and the feminine wash water spray holes 323 are arranged at intervals from the rear to the front on the nozzle assembly 30.

[0065] See Figure 13 , the water outlet 512 includes four, namely the hip wash water outlet 5121, the enema water outlet 5122, the feminine wash water outlet 5123, and the self-cleaning water outlet 5124. Among them, the hip wash water outlet 5121 is communicated with the hip wash water spray holes 321 through the hip wash water channel, the feminine wash water outlet 5123 is communicated with the feminine wash water spray holes 323 through the feminine wash water channel, and the enema water outlet 5122 is communicated with the enema water spray holes 322 through the enema wash water channel. The self-cleaning water outlet 5124 is communicated with the self-cleaning nozzle 11 (see Figure 1 , Figure 3 and Figure 4 ) arranged on the fixed bracket 10 through a self-cleaning water channel formed by a hose or the like. The self-cleaning nozzle 11 can spray and wash the nozzle assembly 30 to realize the self-cleaning function. Among them, the enema water spray holes 322 can spray a non-divergent water column, so as to be able to wash the end of the human rectum to realize the defecation function. Of course, in other embodiments, the enema water spray holes 322 can also be gentle water spray holes or the like.

[0066] See Figures 2 to 6 , in this embodiment, the switching assembly 50 includes a switching housing 51 fixed to the rear end of the nozzle assembly 30, a switching piece 52 rotatably arranged in the inner cavity of the switching housing 51, a ratchet wheel 53 rotatably arranged on the switching housing 51, a stop ratchet tooth 54 fixed to the switching housing 51, and a ratchet wheel driving member 55 fixed to the rear end of the fixed bracket 10. The switching housing 51 is provided with a water inlet 511 and a water outlet 512. The ratchet wheel 53 drives the switching piece 52 to rotate. When the switching piece 52 rotates, it controls the water inlet 511 to be selectively communicated with each water outlet 512. When the nozzle assembly 30 moves backward relative to the fixed bracket 10, the ratchet wheel 53 rotates forward by a predetermined angle under the action of the ratchet wheel driving member 55, and the stop ratchet tooth 54 prevents the ratchet wheel 53 from rotating backward. When the nozzle assembly 30 moves forward relative to the fixed bracket 10, the ratchet wheel driving member 55 gives way to the ratchet wheel 53.

[0067] Specifically, in this embodiment, the switching component 50 further includes a switching gear 56 coaxially arranged with the ratchet wheel 53. The switching gear 56 is in circumferential limit cooperation with the ratchet wheel 53, and the rotational transmission between the two is realized through the circumferential limit cooperation between the switching gear 56 and the ratchet wheel 53. The ratchet driving member 55 includes a swinging member 551 and an elastic member 552. The swinging member 551 is provided with a tooth portion 5511 that cooperates with the switching gear 56. The elastic member 552 is specifically a tension spring, and of course, it can also be other elastic components such as a compression spring or a spring arm. When the nozzle assembly 30 moves backward relative to the fixed bracket 10 until the switching gear 56 cooperates with the tooth portion 5511, the switching gear 56 and the ratchet wheel 53 rotate forward under the restriction of the tooth portion 5511. As the nozzle assembly 30 continues to move backward, the swinging member 551 swings, causing the elastic member 552 to undergo elastic deformation. When the nozzle assembly 30 moves forward relative to the fixed bracket 10, the swinging member 551 swings open under the drive of the switching gear 56 to make way for the switching gear 56. After the switching gear 56 is separated from the swinging member 551, the elastic member 552 drives the swinging member 551 to reset.

[0068] cooperate Figure 2 and Figure 10 In this embodiment, the switching housing 51 includes a main housing 513 and a gland 514. The main housing 513 has a hollow structure and an open end on one side, and the gland 514 is connected to cover the open end. A transmission shaft 57 is fixedly connected to the switching piece 52. The transmission shaft 57 extends out of the gland 514 and is fixedly connected to the ratchet wheel 53. The switching piece 52 is provided with a through water hole 521. When the switching piece 52 rotates, the water hole 521 is switched to communicate with each water outlet 512 correspondingly.

[0069] In this embodiment, the transmission component 40 includes a transmission gear (not shown) and a transmission rack 41. The transmission gear is arranged on the fixed bracket 10, and the transmission rack 41 is arranged on the nozzle assembly 30. The driving motor 20 drives the transmission rack 41 to slide through the transmission gear, and the transmission rack 41 further drives the nozzle assembly 30 to move telescopically relative to the fixed bracket 10.

[0070] In this embodiment, a position sensor (not shown) and a controller (not shown) are further included. The controller is electrically connected to the driving motor 20 and the position sensor respectively. The position sensor can be Hall induction, capacitance induction, inductance induction, infrared induction, etc., and is used to sense the position of the switching component 50, such as sensing the position of the switching piece 52. The controller determines the communication state between the water inlet 511 and the water outlet 512 according to the position signal obtained by the position sensor, and controls whether the nozzle assembly 30 retracts backward before moving forward telescopically relative to the fixed bracket 10 according to the user's instruction.

[0071] In this embodiment, when performing body cleaning, whether to perform waterway switching on the switching component 50 can be judged and controlled by the following waterway switching method. The waterway switching method includes the following steps:

[0072] S1: Obtain the user instruction through the controller and the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is in the initial position. When the controller determines that the communication state between the water inlet and the water outlet matches the user instruction, step S2 is executed; when the controller determines that the communication state between the water inlet and the water outlet does not match the user instruction, step S3 is executed.

[0073] S2: The controller controls the driving motor to directly drive the nozzle assembly to move forward.

[0074] S3: The controller first controls the driving motor to drive the nozzle assembly to retract backward to drive the switching component to switch, and then controls the driving motor to drive the nozzle assembly to move forward.

[0075] The operation process of this embodiment is briefly described as follows:

[0076] See Figure 1 , at this time, the nozzle assembly 30 is in the initial position, the nozzle assembly 30 neither extends nor retracts relative to the fixed bracket 10. At this time, the water passing hole 521 on the switching piece 52 in the switching component 50 is communicated with one of the water outlets 512. When starting to clean, first sense the position of the water passing hole 521 through the position sensor. The position sensor sends the position signal of the water passing hole 521 to the controller. The controller then judges the communication state between the water inlet 511 and the water outlet 512 according to the position signal obtained by the position sensor, so as to judge whether the water outlet 512 communicated with the water inlet 511 at this time matches the corresponding function (hip wash function or feminine wash function or enema wash function) selected by the user. If the two match (for example, the water inlet 511 is communicated with the hip wash water outlet 5121 and the user selects the hip wash function), the corresponding function cleaning is directly performed by driving the nozzle assembly 30 to move forward relative to the fixed bracket 10 through the driving motor 20; if the two do not match (for example, the water inlet 511 is communicated with the hip wash water outlet 5121 and the user selects the feminine wash function or the enema wash function), the driving motor 20 is first controlled to drive the nozzle assembly 30 to retract backward to drive the switching component 50 to perform waterway switching, and then the driving motor 20 is controlled to drive the nozzle assembly 30 to move forward to perform the corresponding function cleaning.

[0077] See Figure 5, when the communication state between the water inlet 511 and the water outlet 512 does not match the user instruction and the water path needs to be switched, the drive motor 20 is used to drive the nozzle assembly 30 to move backward relative to the fixed bracket 10. When the switching gear 56 is engaged with the tooth part 5511, the switching gear 56 and the ratchet wheel 53 rotate forward under the restriction of the tooth part 5511. As the nozzle assembly 30 continues to move backward, the swing member 551 swings, causing the elastic member 552 to elastically deform. When the ratchet wheel 53 rotates forward, it drives the switching piece 52 to rotate, and the switching piece 52 then controls the water inlet 511 to switch to communicate with the water outlet 512 that matches the user instruction. At the same time, the anti-rotation ratchet teeth 54 prevent the ratchet wheel 53 from rotating backward.

[0078] See Figure 6 , when the switching piece 52 is switched in place, the drive motor 20 is used to drive the nozzle assembly 30 to move forward relative to the fixed bracket 10. The swing member 551 swings away under the drive of the switching gear 56 to make way for the switching gear 56. After the switching gear 56 is separated from the swing member 551, the elastic member 552 drives the swing member 551 to reset. When the nozzle assembly 30 extends in place, it can spray and wash the human body.

[0079] In other embodiments, the position sensor may not be provided. When the nozzle assembly is in the initial position, the water inlet is always correspondingly communicated with the self-cleaning water outlet; when the drive motor drives the nozzle assembly to move backward to different positions before moving forward and extending, the water inlet is switched to correspondingly communicate with other water outlets except the self-cleaning water outlet. For example: when the nozzle assembly moves backward to the first position, the water inlet is communicated with the hip wash water outlet; when the nozzle assembly moves backward to the second position, the water inlet is communicated with the enema water outlet; when the nozzle assembly moves backward to the third position, the water inlet is communicated with the feminine wash water outlet. The drive motor drives the nozzle assembly to move backward to the first position or the second position or the third position before moving forward and extending to match the corresponding functions, so that the switching control of the water path can also be realized. Of course, if there are only 2 water outlets, the drive motor only needs to drive the nozzle assembly to move backward to the first position or the second position before moving forward and extending.

[0080] In other embodiments, the position sensor may not be provided. The controller can memorize the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is reset to the initial position for the previous time to form memory information. The controller controls whether the nozzle assembly moves backward before moving forward and extending relative to the fixed bracket according to the user instruction and the memory information, so that the judgment of whether to switch the water path can also be realized.

[0081] See Figure 15, the difference between the water path switching structure of a toilet body cleaning device provided in the second embodiment of the present invention and that of the first embodiment lies in the structure of the ratchet driving member 55: In this embodiment, the ratchet driving member 55 adopts an elastic deformable clamping arm 553. The fixed end of the clamping arm 553 is fixed to the rear end of the fixed bracket 10, and a driving ratchet tooth 5531 is provided at the free end of the clamping arm 553. When the nozzle assembly 30 moves backward relative to the fixed bracket 10 until the ratchet 53 abuts against the driving ratchet tooth 5531, the ratchet 53 rotates forward under the restricting action of the driving ratchet tooth 5531. As the nozzle assembly 30 continues to move backward, the driving ratchet tooth 5531 moves backward, causing the clamping arm 553 to elastically deform. When the nozzle assembly 30 moves forward relative to the fixed bracket 10, the driving ratchet tooth 5531 gives way to the ratchet 53. After the ratchet 53 separates from the driving ratchet tooth 5531, the clamping arm 553 elastically deforms and returns to its original position.

[0082] In other embodiments not shown, the switching assembly 50 can also adopt a ballpoint pen type elastic pressing assembly (not shown). The ballpoint pen type elastic pressing assembly includes a switching piece rotatably arranged or a switching shaft slidably arranged between a first position and a second position. Water passing holes are provided on the switching piece or the switching shaft. When the nozzle assembly 30 moves backward relative to the fixed bracket 10 and drives the switching assembly 50 once, the switching piece rotates a predetermined angle or the switching shaft slides between the first position and the second position once, so that the water passing holes are alternately communicated with the respective water outlets 512.

[0083] See Figure 16 , the third embodiment of the present invention also provides a toilet, which includes a toilet seat body 1, a toilet cover 2, and a toilet body cleaning device 3. Among them, the toilet body cleaning device 3 is arranged on the toilet cover 2. The toilet body cleaning device 3 includes the water path switching structure of the toilet body cleaning device described in any one of the above, and adopts the above water path switching method for water path switching. Specifically, the toilet body cleaning device 3 of this embodiment adopts the water path switching structure of the toilet body cleaning device of the first embodiment.

[0084] Figure 16 Fig. shows a schematic diagram of the nozzle assembly of the toilet body cleaning device 3 in the extended state. At this time, the toilet body cleaning device 3 can spray and wash the human body.

[0085] 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, 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 inventive concept described herein through the above teachings or the techniques or knowledge in related fields. And any modifications and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A water path switching structure of a toilet body cleaning device, characterized in that, it includes: a fixed bracket; a driving motor provided on the fixed bracket; a nozzle assembly slidably provided on the fixed bracket in the front-back direction. At least two water passing channels are provided on the nozzle assembly. The water passing channels include a hip washing water passing channel and a feminine washing water passing channel. At the front end of the nozzle assembly, water spraying holes corresponding to and communicating with each of the water passing channels are provided. The water spraying holes include a hip washing water spraying hole communicating with the hip washing water passing channel and a feminine washing water spraying hole communicating with the feminine washing water passing channel; a transmission assembly, the driving motor drives the nozzle assembly to perform telescopic movement in the front-back direction on the fixed bracket through the transmission assembly; a switching assembly provided between the rear end of the nozzle assembly and the rear end of the fixed bracket. The switching assembly includes a water inlet and a plurality of water outlets. At least two of the plurality of water outlets are respectively corresponding to and communicating with the water inlet ends of at least two of the water passing channels. The driving motor drives the nozzle assembly to move backward relative to the fixed bracket to drive the switching assembly, so that the water inlet is switched to communicate with each of the water outlets.

2. The water path switching structure of the toilet body cleaning device according to claim 1, characterized in that, the switching assembly includes a switching shell fixed to the rear end of the nozzle assembly, a switching piece rotatably provided in the inner cavity of the switching shell, a ratchet wheel rotatably provided on the switching shell, a stop ratchet tooth fixed to the switching shell, and a ratchet wheel driving member fixed to the rear end of the fixed bracket. The switching shell is provided with the water inlet and the water outlets. The ratchet wheel drives the switching piece to rotate. When the switching piece rotates, it controls the water inlet to be switched to communicate with each of the water outlets. When the nozzle assembly moves backward relative to the fixed bracket, the ratchet wheel rotates forward by a predetermined angle under the action of the ratchet wheel driving member. The stop ratchet tooth prevents the ratchet wheel from rotating backward. When the nozzle assembly moves forward relative to the fixed bracket, the ratchet wheel driving member gives way to the ratchet wheel.

3. The water path switching structure of the toilet body cleaning device according to claim 2, characterized in that, the switching assembly further includes a switching gear coaxially arranged with the ratchet wheel. The switching gear is in circumferential limit cooperation with the ratchet wheel. The ratchet wheel driving member includes a swinging member and an elastic member. The swinging member is provided with a tooth portion cooperating with the switching gear. When the nozzle assembly moves backward relative to the fixed bracket until the switching gear cooperates with the tooth portion, the switching gear and the ratchet wheel rotate forward under the limiting action of the tooth portion. As the nozzle assembly continues to move backward, the swinging member swings, so that the elastic member generates elastic deformation. When the nozzle assembly moves forward relative to the fixed bracket, the swinging member swings away under the drive of the switching gear to give way to the switching gear. After the switching gear is separated from the swinging member, the elastic member drives the swinging member to reset.

4. The waterway switching structure of the toilet body cleaning device according to claim 2, characterized in that, the ratchet driving member adopts an elastic deformable clamping arm, the fixed end of the clamping arm is fixed at the rear end of the fixed bracket, a driving ratchet tooth is provided at the free end of the clamping arm, when the nozzle assembly moves backward relative to the fixed bracket until the ratchet abuts against the driving ratchet tooth, the ratchet rotates forward under the limiting action of the driving ratchet tooth, as the nozzle assembly continues to move backward, the driving ratchet tooth moves backward, thereby causing the clamping arm to elastically deform, when the nozzle assembly moves forward relative to the fixed bracket, the driving ratchet tooth gives way to the ratchet, after the ratchet is separated from the driving ratchet tooth, the clamping arm elastically deforms and resets.

5. The waterway switching structure of the toilet body cleaning device according to claim 2, characterized in that, the switching housing includes a main housing and a gland, the main housing is of a hollow structure and has an open end on one side, the gland covers the open end, a transmission shaft is fixedly connected to the switching piece, the transmission shaft extends out of the gland and is fixedly connected to the ratchet, a through water hole is provided on the switching piece, when the switching piece rotates, the water hole is switched to communicate with each of the water outlets correspondingly.

6. The waterway switching structure of the toilet body cleaning device according to claim 1, characterized in that, the switching assembly adopts a ballpoint pen type elastic pressing assembly, the ballpoint pen type elastic pressing assembly includes a rotatably arranged switching piece or includes a switching shaft that can slide between a first position and a second position, a water hole is provided on the switching piece or the switching shaft, when the nozzle assembly moves backward relative to the fixed bracket and drives the switching assembly once, the switching piece rotates a predetermined angle or the switching shaft slides between the first position and the second position once.

7. The waterway switching structure of the toilet body cleaning device according to claim 1, characterized in that, the transmission assembly includes a transmission gear and a transmission rack, the transmission gear is arranged on the fixed bracket, the transmission rack is arranged on the nozzle assembly, the driving motor drives the transmission rack to slide through the transmission gear, and the transmission rack further drives the nozzle assembly to telescopically move relative to the fixed bracket.

8. The waterway switching structure of the toilet body cleaning device according to claim 1, characterized in that, it further includes a position sensor and a controller, the controller is electrically connected to the driving motor and the position sensor respectively, the position sensor is used to sense the position of the switching assembly, the controller judges the communication state between the water inlet and the water outlet according to the position signal obtained by the position sensor, and controls whether the nozzle assembly retracts backward before moving forward relative to the fixed bracket according to the user's instruction.

9. The waterway switching structure of the toilet body cleaning device according to claim 1, characterized in that, It further includes a self-cleaning water passage, the water outlet includes a self-cleaning water outlet communicating with the self-cleaning water passage. When the nozzle assembly is in the initial position, the water inlet corresponds to and communicates with the self-cleaning water outlet. When the drive motor drives the nozzle assembly to retract backward to different positions before extending forward, the water inlet is switched to correspond to and communicate with other water outlets except the self-cleaning water outlet.

10. The waterway switching structure of the toilet body cleaning device according to claim 1, characterized in that, it further includes a controller, the drive motor is electrically connected to the controller, the controller can memorize the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is reset to the initial position for the previous time to form memory information, and the controller controls whether the nozzle assembly retracts backward before extending forward relative to the fixed bracket according to the user's instruction and the memory information.

11. A waterway switching method for a toilet body cleaning device, characterized in that, it adopts the waterway switching structure of the toilet body cleaning device according to any one of claims 1 to 10, and the waterway switching method includes the following steps: S1: Obtain the user instruction and the communication state between the water inlet and the water outlet of the switching component when the nozzle assembly is in the initial position through the controller. When the controller determines that the communication state of the water inlet and the water outlet matches the user instruction, step S2 is executed; when the controller determines that the communication state of the water inlet and the water outlet does not match the user instruction, step S3 is executed; S2: The controller controls the drive motor to directly extend the nozzle assembly forward; S3: The controller first controls the drive motor to retract the nozzle assembly backward to drive the switching component to switch, and then controls the drive motor to extend the nozzle assembly forward.

12. A toilet, including the toilet seat body, the toilet cover plate and the toilet body cleaning device, characterized in that, the toilet body cleaning device includes the waterway switching structure of the toilet body cleaning device according to any one of claims 1 to 10, or the toilet body cleaning device adopts the waterway switching method according to claim 11.

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