Overhead shower system and its control method

Abstract

This invention discloses a top-mounted shower system and its control method, belonging to the field of bathroom fixtures technology. The top-mounted shower system includes: a lift-type top-mounted shower head; a height measuring sensor for measuring the user's real-time height data; and a controller electrically connected to both the lift-type top-mounted shower head and the height measuring sensor. The control method of the top-mounted shower system includes the following steps: S1: Control the height measuring sensor to acquire the user's real-time height data located in the detection area; S2: Control the lift-type top-mounted shower head to move up and down according to the real-time height data and a preset height difference to adjust its height position, wherein the preset height difference is a set height distance between the lift-type top-mounted shower head and the user's head. This invention has a high degree of intelligence, capable of acquiring the height difference between people and the lift-type top-mounted shower head in real time, and automatically adjusting the height position of the lift-type top-mounted shower head accordingly to meet people's bathing needs.

Description

Technical Field

[0001] This invention belongs to the field of bathroom fixtures technology, and specifically relates to an overhead shower system and its control method. Background Technology

[0002] Currently, shower products on the market include handheld showers and overhead showers. Compared to handheld showers, overhead showers have the advantages of not requiring handheld use, having a large water flow, a large water area, and providing massage water, making them very popular with consumers.

[0003] Traditional overhead showerheads are fixed in place, making it impossible for users to adjust their height to suit their individual needs, thus failing to meet their requirements. With technological advancements, overhead showerheads now feature height-adjustable functions, such as the lift-type showerhead disclosed in patent application number 201510659320.2, which allows users of different heights to freely adjust the height of the overhead showerhead.

[0004] However, with the continuous development of technology and the constant improvement of living standards, people have higher demands for personalized, practical, and less domestically demanding smart overhead shower products. For example, the overhead shower control method, device, overhead shower, and storage medium disclosed in invention patent application number 202010833995.5 not only enable adjustable height of the overhead shower but also obtain user identity information by acquiring fingerprint, voiceprint, or facial image information, thereby determining the user's pre-stored height data. Based on this height data, the system automatically controls the lifting mechanism to adjust the height of the overhead shower to suit the user's height, eliminating the need for manual adjustment by the user.

[0005] However, the aforementioned overhead shower products require prior knowledge and recording of user identity information, including height data, and cannot freely adjust the height of the overhead shower according to the user's bathing habits. Therefore, it is clear that existing overhead shower technologies still cannot meet people's usage requirements. Summary of the Invention

[0006] The purpose of this invention is to provide a highly intelligent overhead shower system that can obtain the height difference between people and the lifting overhead shower in real time, and automatically adjust the height position of the lifting overhead shower accordingly to meet people's bathing needs, making it more user-friendly.

[0007] In addition, the present invention also provides a control method for an overhead shower system.

[0008] The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0009] In a first aspect, the present invention discloses an overhead shower system, comprising:

[0010] Retractable overhead shower head;

[0011] Altitude measurement sensor, which is used to measure the user's real-time altitude data;

[0012] The controller is electrically connected to both the lifting overhead shower head and the height measurement sensor.

[0013] The overhead shower system provided by this invention has at least the following beneficial effects: When using this overhead shower system, a height measurement sensor is used to automatically acquire the user's height data, eliminating the need for manual input of the user's height data. The height position of the lifting overhead shower head is automatically adjusted based on the height data. Furthermore, the height measurement sensor can also be used to obtain the user's real-time height data during showering, allowing the controller to calculate the real-time height difference between the user and the lifting overhead shower head. Based on this real-time height difference, the controller automatically adjusts the height position of the lifting overhead shower head, ensuring the height difference between the lifting overhead shower head and the user reaches a set value. This achieves real-time intelligent adjustment of the height position of the lifting overhead shower head during showering, meeting different user showering needs such as standing showering or bending over showering. Moreover, it eliminates the need for manual adjustment, freeing the user's hands and achieving intelligent control functionality.

[0014] As a further improvement to the above technical solution, the lifting overhead shower head includes:

[0015] The overhead shower head has a connection end;

[0016] The mounting rod extends vertically and is located behind the overhead shower head. The mounting rod is hollow to form a mounting cavity, and the rear side of the mounting rod has an opening that extends vertically and communicates with the mounting cavity.

[0017] A lifting drive mechanism is disposed within the mounting cavity. The lifting drive mechanism has a movable end that can move up and down. The movable end extends out of the opening and is connected to the connecting end.

[0018] The mounting rod is fixed to the wall to provide support for the overhead shower head. The lifting drive mechanism is located inside the mounting cavity of the mounting rod, with the opening on the rear side of the mounting rod. This provides some protection for the lifting drive mechanism, preventing it from being affected by bathroom water or impacts from external debris, thus helping to extend its service life and reduce the failure rate. The mounting rod also has an opening to allow the movable end of the lifting drive mechanism to connect and fix to the connection end of the overhead shower head, enabling the lifting drive mechanism to drive the overhead shower head to move vertically.

[0019] As a further improvement to the above technical solution, the lifting drive mechanism includes:

[0020] A drive motor, which has an output shaft;

[0021] A screw and nut assembly, comprising a screw and a nut, the screw extending vertically, one end of the screw being drively connected to the output shaft;

[0022] An inner guide sleeve slides up and down with the mounting rod, the inner guide sleeve is fitted onto the nut, and the inner guide sleeve is connected to the connecting end.

[0023] The inner guide sleeve is slidably connected to the mounting rod, allowing the inner guide sleeve to move up and down relative to the mounting rod. The inner guide sleeve is fixedly connected to the nut in the screw and nut assembly. When the output shaft of the drive motor drives the screw in the screw and nut assembly to rotate forward or backward, the inner guide sleeve will move up and down with the nut, thereby realizing the lifting and lowering of the overhead shower head. Moreover, the lifting drive mechanism with the above structure makes the structure of the lifting drive mechanism more compact and occupies less space, thus helping to reduce the space occupied by the mounting rod in the bathroom.

[0024] As a further improvement to the above technical solution, limit switches are provided at both ends of the screw, and the limit switches and the drive motor are electrically connected to the controller.

[0025] Limit switches are installed at both the upper and lower ends of the screw. After the overhead shower head moves to its upper position, the limit switch at the upper end of the screw generates and sends a detection signal to the controller, causing the controller to stop the drive motor. After the overhead shower head moves to its lower position, the limit switch at the lower end of the screw generates and transmits a detection signal to the controller, causing the controller to stop the drive motor. In this way, the highest and lowest positions of the overhead shower head during the movement can be controlled, avoiding collision damage to the lifting drive mechanism and the overhead shower head due to excessive upward or downward movement.

[0026] As a further improvement to the above technical solution, the connecting end is provided with a slip ring, which is sleeved on the mounting rod and slides up and down with the mounting rod. The slip ring is connected to the inner guide sleeve. The slip ring is hollow to form a wiring cavity. The wiring cavity is provided with an inlet and an outlet. The inlet communicates with the opening. The connecting end is provided with an inlet hole, which communicates with the outlet. Both ends of the mounting rod extend backward to form mounting parts. At least one of the mounting parts is provided with a wiring hole that communicates with the mounting cavity.

[0027] The slip ring on the connecting end slides up and down with the mounting rod, which can enhance the stability of the overhead shower head during lifting and lowering, and prevent the overhead shower head from shaking during lifting and lowering. The mounting rod is fixed to the wall through the mounting part. Moreover, the mounting rod is equipped with a cable routing hole, the slip ring is equipped with a cable routing cavity, and the connecting end is equipped with a cable inlet hole, so that the water inlet pipe and cable can be installed through the wall and extended to the overhead shower head through the cable routing hole, cable routing cavity and cable inlet hole. This achieves a concealed arrangement of the water inlet pipe and cable, which provides good protection for the water inlet pipe and cable and makes the lifting overhead shower head more aesthetically pleasing.

[0028] As a further improvement to the above technical solution, a handrail is formed at the lower end of the mounting rod, and the handrail is located below the overhead shower head. The handrail on the mounting rod is positioned closest to the human body in the slippery area of ​​the bathroom, allowing people to react and grab the handrail in time before a fall, thus enhancing the safety of using the lift-type overhead shower head and effectively solving the safety hazard of people easily falling on slippery surfaces.

[0029] As a further improvement to the above technical solution, the overhead shower system also includes an alarm; the mounting rod is equipped with an emergency call button, which is located below the overhead shower head, and the emergency call button and the alarm are electrically connected to the controller.

[0030] With this setup, if someone falls in the bathroom, they can activate the emergency call button to trigger the alarm under the control of the controller, which can promptly notify others to enter the bathroom for rescue. The emergency call button is located on the mounting rod below the overhead shower head, making it easy for people to trigger and effectively solving the problem of ease of operation of the emergency call button.

[0031] As a further improvement to the above technical solution, the overhead shower head includes a connecting pipe, a shower head, and a universal connecting assembly. One end of the connecting pipe is the connecting end, and the other end is connected to the shower head via the universal connecting assembly. Because the shower head and the connecting pipe are connected via a universal connecting assembly, the user can drive the shower head to rotate relative to the connecting pipe, thereby manually adjusting the water outlet angle of the shower head and increasing the convenience of spraying.

[0032] As a further improvement to the above technical solution, the shower head is hollow, forming a receiving cavity, an inner ring water cavity, and an outer ring water cavity. A three-position three-way valve is installed within the receiving cavity. The three-position three-way valve has an inlet, a first outlet, and a second outlet. The first outlet communicates with the inner ring water cavity, and the second outlet communicates with the outer ring water cavity. With this configuration, the water flow direction can be controlled by the three-position three-way valve, allowing water to flow only into the inner ring water cavity or the outer ring water cavity, or simultaneously into both. This enables switching between three modes: water flowing from the inner ring only, water flowing from the outer ring only, and water flowing from both the inner and outer rings simultaneously.

[0033] As a further improvement to the above technical solution, a light strip is provided on the lower surface of the shower head, and the light strip is arranged around the outer perimeter of the shower head. This arrangement gives the shower head an additional lighting function, which, when the light strip is turned on, can create a pleasant atmosphere and enhance the visual comfort of showering.

[0034] Secondly, the present invention also discloses a control method for an overhead shower system, applicable to any of the above-mentioned technical solutions, comprising the following steps:

[0035] S1: Control the height measurement sensor to acquire real-time height data of the user located in the detection area;

[0036] S2: Control the up-and-down movement of the lifting overhead shower head to adjust its height position based on real-time height data and a preset height difference, wherein the preset height difference is the set height distance between the lifting overhead shower head and the user's head.

[0037] The control method for the overhead shower system provided by this invention has at least the following beneficial effects: When a user uses the overhead shower system, the user's real-time height data is automatically collected using a height measurement sensor, eliminating the need for the user to manually input their height data, which is very convenient. Then, the height position of the lifting overhead shower is determined using a preset height difference value and the user's real-time height data. Subsequently, the lifting overhead shower is controlled to perform lifting and lowering actions, thereby automatically adjusting the height position of the lifting overhead shower.

[0038] As a further improvement to the above technical solution, after step S2, the following steps are also included:

[0039] S3: If the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, then keep the lifting overhead shower stationary, wherein the real-time height difference is the real-time height distance between the lifting overhead shower and the user's highest point.

[0040] With this setup, after the height of the lift-type overhead shower head is adjusted, the height measurement sensor will still collect the user's real-time height data. If the user bends down to pick up an item or rubs their legs, and the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, the lift-type overhead shower head will remain stationary, maintaining its original position. This allows the user to use the lift-type overhead shower head after completing the bending action, avoiding increased energy consumption caused by the continuous raising and lowering of the shower head. Attached Figure Description

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0042] Figure 1This is a schematic diagram of the structure of the lifting overhead shower head and height measuring sensor provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of the structure of the lifting overhead shower provided in an embodiment of the present invention;

[0044] Figure 3 yes Figure 2 Enlarged view of section A;

[0045] Figure 4 yes Figure 2 Enlarged view of section B;

[0046] Figure 5 This is a schematic diagram of the overhead shower head provided in an embodiment of the present invention;

[0047] Figure 6 This is a bottom view of the shower head provided in an embodiment of the present invention;

[0048] Figure 7 This is a schematic diagram of the overhead shower system provided in an embodiment of the present invention;

[0049] Figure 8 This is a flowchart of the control method for the overhead shower system provided in the embodiments of the present invention;

[0050] Figure 9 This is a flowchart of a control method for an overhead shower system provided in another embodiment of the present invention.

[0051] The attached diagram is labeled as follows: 10, Lifting overhead shower head; 20, Controller; 30, Height measuring sensor; 100, Overhead shower head; 110, Connecting pipe; 120, Shower head; 121, Inner ring water chamber; 122, Outer ring water chamber; 123, Receiving cavity; 124, Inner ring water outlet plate; 125, Outer ring water outlet plate; 126, Three-way connector; 131, Adjusting nut; 132, Pressure ring; 133, Bottom ring; 134, Hollow spherical connector; 140, Three-position three-way valve; 151, Inner ring water pipe; 152, Outer ring... Water pipe; 160, LED strip; 200, mounting rod; 201, opening; 202, mounting part; 210, mounting cavity; 310, water inlet pipe; 320, cable; 400, slip ring; 410, rubber pad; 510, fixing bracket; 520, screw; 530, nut; 540, inner guide sleeve; 550, drive motor; 560, coupling; 610, first limit switch; 620, second limit switch; 710, up button; 720, down button; 730, water outlet mode button; 740, help button. Detailed Implementation

[0052] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0054] It should be noted that the vertical direction refers to the up-and-down direction, while the horizontal direction refers to the direction perpendicular to the up-and-down direction.

[0055] In the description of this invention, the use of terms such as "a number" means one or more, with "more than" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while terms like "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the number of indicated technical features, or the sequential relationship between indicated technical features.

[0056] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0057] Reference Figures 1 to 9 The following are several embodiments of the overhead shower system and its control method of the present invention.

[0058] like Figures 1 to 7 As shown, Embodiment 1 of the present invention provides a top-spray shower system. The structure of the top-spray shower system includes a lifting top-spray shower 10, a height measurement sensor 30, and a controller 20. It has a high degree of intelligence and can obtain the height difference between people and the lifting top-spray shower 10 in real time, and automatically adjust the height position of the lifting top-spray shower 10 accordingly to meet people's bathing needs, making it more humane.

[0059] The lift-type overhead shower head 10 is installed in the bathroom for use by the user during showering. When the lift-type overhead shower head 10 is activated, the water outlet surface of the lift-type overhead shower head 10 can move up or down.

[0060] The height measurement sensor 30 is used to measure the user's real-time height data. A detection area equipped with the height measurement sensor 30 is installed in the bathroom to collect the real-time height data of the user located within the detection area. The detection area can be located either outside or inside the shower area.

[0061] Understandably, the height measurement sensor 30 can be installed on the ceiling or wall of the bathroom. The height measurement sensor 30 can measure height data; specifically, it can employ an integrated ultrasonic ranging module, a high-precision height sensor that uses ultrasonic technology to detect the distance to objects or people. Alternatively, the height measurement sensor 30 can also be a lidar system capable of measuring height.

[0062] The height measuring sensor 30 is electrically connected to the controller 20 via cable 320 to transmit the data collected by the height measuring sensor 30 to the controller 20. The controller 20 is electrically connected to the lifting overhead shower head 10 via cable 320 so that the control commands of the controller 20 can be transmitted to the lifting overhead shower head 10 to start the lifting overhead shower head 10 and realize the automatic lifting function of the lifting overhead shower head 10.

[0063] It is understandable that the controller 20 can be a PLC controller 20, a microcontroller, an integrated motherboard, a microprocessor, or other devices with programmable logic control functions, which can adjust the height position of the lifting top spray shower head 10 according to the sum of real-time height data and a predetermined value.

[0064] In some embodiments, the height measurement sensor 30 samples the user located in the detection area and automatically collects the user's real-time height data. In this embodiment, the real-time height data is the user's actual height data, so there is no need to manually enter the user's actual height data. At this time, the height position of the ground in the detection area and the shower area is used as a reference plane. After users of different heights enter the detection area, the height measurement sensor 30 will collect the user's height data and transmit the collected data to the controller 20. The controller 20 can adjust the height position of the lifting overhead shower head 10 according to the height data, so that the vertical distance between the lifting overhead shower head 10 and the user is equal to the preset height difference, wherein the preset height difference is the set height distance between the lifting overhead shower head 10 and the user's head.

[0065] Understandably, in this embodiment, the height of the lift-type overhead shower head 10 remains unchanged during the user's showering process. After the user finishes showering, the lift-type overhead shower head 10 will automatically reset and rise to the set position. The user can turn off the overhead shower system after showering, or set the detection area within the shower area. The height measurement sensor 30 collects data in real time. After the first sampling, the height measurement sensor 30 will continue to collect data, but the controller 20 will not adjust the height of the lift-type overhead shower head 10 based on the data from the height measurement sensor 30, unless the data collected by the height measurement sensor 30 is zero, indicating that showering is complete, at which point the controller 20 will reset the lift-type overhead shower head 10. After the height measurement sensor 30 collects the user's height data, the lift-type overhead shower head 10 will move downwards to adjust the height distance between the lift-type overhead shower head 10 and the user.

[0066] In other embodiments, the height measurement sensor 30 continuously collects real-time height data of the user located within the detection area, which is set within the shower area. In this embodiment, the real-time height data is the height difference between the user's highest point and the ground in the detection area. When the user is standing and washing their hair, they may rub their hair with their hands; or, the user may bend over and rub their legs. The height measurement sensor 30 can collect the height difference between the user's highest point and the ground in the detection area, allowing the controller 20 to calculate the real-time height difference between the user and the lifting overhead shower head 10. Based on this real-time height difference, the controller automatically adjusts the height position of the lifting overhead shower head 10 to achieve a preset height difference between the lifting overhead shower head 10 and the user. This enables real-time intelligent adjustment of the height position of the lifting overhead shower head 10 during showering, meeting different showering needs such as standing showering and bending over showering.

[0067] In some embodiments, such as Figures 1 to 6 As shown, the structure of the lifting overhead shower head 10 includes an overhead shower head 100, a mounting rod 200, and a lifting drive mechanism.

[0068] The mounting rod 200 has two ends extending vertically and is fixedly connected to the bathroom wall. The mounting rod 200 has a hollow interior forming a mounting cavity 210, which extends vertically. The mounting rod 200 has an opening 201 located on its rear side and communicating with the mounting cavity 210; both ends of the opening 201 extend vertically. In this embodiment, the mounting rod 200 is a round rod, and the mounting cavity 210 is a cylindrical cavity.

[0069] The lifting drive mechanism is set in the mounting cavity 210 of the mounting rod 200. The lifting drive mechanism has a movable end that can move up or down and extends out of the opening 201 of the mounting rod 200.

[0070] The overhead shower head 100 is located on the front side of the mounting rod 200. The overhead shower head 100 has a connecting end that is far away from the water outlet surface of the overhead shower head 100 and close to the mounting rod 200. It is connected and fixed to the movable end of the lifting drive mechanism. When the lifting drive mechanism is started, the overhead shower head 100 will move in the up and down direction under the action of the movable end.

[0071] It is understandable that the lifting drive mechanism is set inside the mounting cavity 210 of the mounting rod 200, and the opening 201 is located on the rear side of the mounting rod 200. This prevents water from easily entering the mounting cavity 210 through the opening 201 during showering, thus providing a certain degree of protection for the lifting drive mechanism. This avoids the lifting drive mechanism from being affected by bathroom water and from collisions with external debris, which helps to extend the service life of the lifting drive mechanism and reduce the failure rate.

[0072] Of course, it is possible that the opening 201 is located in other positions on the mounting rod 200, such as the left side. Furthermore, it is also possible that the lifting drive mechanism is located on the outer peripheral wall of the mounting rod 200.

[0073] In this embodiment, the lifting drive mechanism includes a drive motor 550, a screw and nut assembly, and an inner guide sleeve 540.

[0074] The screw and nut assembly includes a fixing bracket 510, a screw 520, and a nut 530. Both ends of the screw 520 extend vertically. Fixing brackets 510 are provided on both the upper and lower sides of the screw 520, and are fixed to the wall of the mounting cavity 210 by means of welding, screw connection, snap-fit, or adhesive bonding. The upper and lower ends of the screw 520 are rotatably connected to the corresponding fixing brackets 510 via bearings, allowing the screw 520 to rotate relative to the fixing brackets 510 around its vertically extending axis. The nut 530 is threadedly connected to the screw 520.

[0075] The inner guide sleeve 540 has a through hole, the size of which is adapted to the nut 530, allowing the inner guide sleeve 540 to be fitted onto the nut 530 and fixedly connected to it. Furthermore, the inner guide sleeve 540 slides vertically along the mounting rod 200, ensuring that it can only move in the vertical direction of the mounting rod 200 and will not rotate. Therefore, during the forward or reverse rotation of the screw 520, the nut 530 and the inner guide sleeve 540 will move linearly upward or downward. The inner guide sleeve 540 extends towards the opening 201 of the mounting rod 200, forming an extension portion that protrudes from the opening 201.

[0076] In some embodiments, the mounting cavity 210 is a non-circular cavity, and the shape of the inner guide sleeve 540 is adapted to the cross-sectional shape of the mounting cavity 210. The outer peripheral wall surface of the inner guide sleeve 540 contacts the inner peripheral wall surface of the mounting cavity 210, causing the mounting cavity 210 to exert an anti-rotation effect on the inner guide sleeve 540. In other embodiments, the left and right sides of the extension of the inner guide sleeve 540 respectively contact the inner wall surface of the opening 201 of the mounting rod 200, so that the opening 201 of the mounting rod 200 exerts an anti-rotation effect on the inner guide sleeve 540.

[0077] The extension of the inner guide sleeve 540 is connected and fixed to the connecting end of the overhead shower head 100. Therefore, the inner guide sleeve 540 can drive the overhead shower head 100 to rise and fall. It is understood that the shape of the extension is not limited, and it is mainly used to realize the connection between the inner guide sleeve 540 and the overhead shower head 100.

[0078] The drive motor 550 can be located above or below the screw 520. In this embodiment, the drive motor 550 is located below the screw 520 and is connected and fixed to the corresponding fixing bracket 510. The drive motor 550 has an output shaft that can rotate in either the forward or reverse direction. The output shaft can be connected to one end of the screw 520 via a coupling 560. Therefore, when the drive motor 550 is activated, if the output shaft of the drive motor 550 rotates in the forward direction, the screw 520 will rotate in the forward direction. At this time, the nut 530, together with the inner guide sleeve 540, moves upward, thereby causing the overhead shower head 100 to rise. If the output shaft of the drive motor 550 rotates in the reverse direction, the screw 520 will rotate in the reverse direction, causing the nut 530 and the inner guide sleeve 540 to move downward, thereby causing the overhead shower head 100 to descend.

[0079] The lifting drive mechanism with the above structure is more compact and occupies less space, thus helping to reduce the space occupied by the mounting rod 200 in the bathroom.

[0080] Understandably, the motor and other electrical components inside the mounting cavity 210 are sealed with motor sealant to achieve a waterproof effect.

[0081] In other embodiments, the lifting drive mechanism can be a linear module, an electric cylinder, a pneumatic cylinder, or other linear drive device, which is not limited here.

[0082] Understandably, the front side of the mounting rod 200 can be provided with mounting through holes, which communicate with the mounting cavity 210. Furthermore, there are two mounting through holes, each housing an up button 710 and a down button 720, both electrically connected to the controller 20. Thus, during showering, the user can press the up button 710 to drive the overhead shower head 100 upwards via the lifting mechanism; and press the down button 720 to drive the overhead shower head 100 downwards via the lifting mechanism.

[0083] In some embodiments, such as Figures 2 to 4 As shown, the lifting overhead shower head 10 also includes a limit switch.

[0084] Specifically, limit switches are provided at both the upper and lower ends of the screw 520. The two limit switches are defined as a first limit switch 610 and a second limit switch 620, respectively. The first limit switch 610 can be fixed to a fixed bracket 510 located on the upper side of the screw 520, and the second limit switch 620 can be fixed to a fixed bracket 510 located on the lower side of the screw 520. The drive motor 550, the first limit switch 610, and the second limit switch 620 are electrically connected to the controller 20 via cables 320.

[0085] like Figure 1 As shown, after the overhead shower head 100 moves to its position, the first limit switch 610 generates a detection signal and sends it to the controller 20, causing the controller 20 to stop the drive motor 550 and keep the overhead shower head 100 at its highest position. Figure 1 The solid line indicates the position of the overhead shower head 100; after the overhead shower head 100 moves to its lowest position, the second limit switch 620 will be triggered, generating and transmitting a detection signal to the controller 20, causing the controller 20 to control the drive motor 550 to stop running, thus stopping the overhead shower head 100 at its lowest position. Figure 1 The dashed line indicates the position of the overhead shower head 100.

[0086] This setting allows control over the highest and lowest positions of the overhead shower head 100 during its movement, preventing collisions and damage to the lifting drive mechanism and the overhead shower head 100 due to excessive upward or downward movement.

[0087] It is understandable that the limit switch can be a photoelectric switch, a travel switch, etc., and is not limited here.

[0088] In some embodiments, the connecting end of the overhead shower head 100 is provided with a slip ring 400. The slip ring 400 has a through-hole extending vertically. Therefore, the slip ring 400 can be sleeved on the mounting rod 200, and the inner peripheral wall of the slip ring 400 contacts the outer peripheral wall of the mounting rod 200, realizing the sliding connection between the slip ring 400 and the mounting rod 200. In this embodiment, since both the mounting rod 200 and the slip ring 400 are metal parts, a rubber pad 410 is provided in the through-hole of the slip ring 400. The rubber pad 410 contacts the mounting rod 200, thus avoiding direct contact between the mounting rod 200 and the slip ring 400, which would generate significant friction and noise. The slip ring 400 is connected and fixed to the extension of the inner guide sleeve 540. This configuration enhances the lifting stability of the overhead shower head 100 and prevents the overhead shower head 100 from shaking during lifting.

[0089] Furthermore, the slip ring 400 has a hollow interior forming a wiring cavity. Viewed from above, the wiring cavity can be annular. The wiring cavity has an inlet and an outlet. The inlet and opening 201 are opposite to each other and communicate with each other. The connecting end of the overhead shower head 100 has an inlet hole, which communicates with the outlet. In this embodiment, the inlet is located on the inner rear wall of the connecting through hole of the slip ring 400, and the outlet is located on the front side of the slip ring 400. The front side of the slip ring 400 is connected and fixed to the connecting end of the overhead shower head 100.

[0090] The mounting rod 200 extends rearward at both ends to form mounting portions 202, which are fixed to the wall by bolts. At least one mounting portion 202 is provided with a wiring hole, which communicates with the mounting cavity 210. In this embodiment, both mounting portions 202 are provided with wiring holes. For the upper mounting portion 202, the water inlet pipe 310 of the overhead shower head 100 extends sequentially through the wiring hole of the mounting portion 202, the mounting cavity 210, the inlet of the slip ring 400, the wiring cavity, and the outlet to the inlet of the overhead shower head 100. For the lower mounting portion 202, the cable 320 enters the mounting cavity 210 sequentially through the wiring hole of the mounting portion 202.

[0091] This design allows the water inlet pipe 310 and cable 320 to be installed through the wall, achieving a concealed arrangement of the water inlet pipe 310 and cable 320. This provides good protection for the water inlet pipe 310 and cable 320 and makes the lifting overhead shower head 10 more aesthetically pleasing.

[0092] It is understandable that the inlet pipe 310 can be made of EPDM rubber, which has a certain degree of flexibility, such as... Figure 1As shown, during the up-and-down movement of the overhead shower head 100, the water inlet pipe 310 located within the wall cavity is arranged in a U-shape. At this time, the wall can refer to a wall composed of a metal frame, which can also contain a niche or other cabinet for storing towels. The water inlet pipe 310 extends and retracts within the wall cavity. The cable 320 also moves along with the movement of the overhead shower head 100.

[0093] In some embodiments, such as Figure 1 and Figure 2 As shown, a handrail is formed at the lower end of the mounting rod 200, located below the overhead shower head 100, specifically below the lifting drive mechanism. The upper end of the handrail is integrally formed with the mounting rod 200, and the lower end of the handrail has a mounting portion 202. The diameter of the handrail is smaller than the diameter of the mounting rod 200, resulting in a greater distance between the handrail and the wall, allowing the user to grip the handrail more effectively.

[0094] Understandably, the mounting rod 200 is equipped with a handrail, which is located in the wet and slippery area of ​​the bathroom, closest to the human body. This allows people to react in time and grab the handrail before falling, enhancing the safety of the lifting overhead shower head 10 and effectively solving the safety hazard of people easily falling on wet and slippery floors.

[0095] In some embodiments, such as Figure 2 and Figure 4 As shown, the overhead shower system also includes an alarm.

[0096] The mounting rod 200 is equipped with an emergency call button 740, located below the overhead shower head 100. Specifically, the mounting rod 200 has three mounting holes, housing not only the up button 710 and the down button 720, but also the emergency call button 740. This design facilitates the activation of the emergency call button 740, effectively addressing the issue of ease of operation.

[0097] The alarm can be a sound alarm or a sound and light alarm. The alarm and the emergency call button 740 are electrically connected to the controller 20 via cable 320. With this setup, if someone falls in the bathroom, they can press the emergency call button 740 on the mounting rod 200 to activate the alarm under the control of the controller 20 and sound an alarm, promptly notifying others to enter the bathroom for rescue.

[0098] In some embodiments, such as Figure 5 As shown, the structure of the overhead shower head 100 includes a connecting pipe 110, a universal connecting assembly, and a shower head 120.

[0099] In this embodiment, the connecting pipe 110 is a metal pipe in an L-shape. One end of the connecting pipe 110 is a connecting end and is connected to the slip ring 400; the other end of the connecting pipe 110 is connected to the shower head 120 via a universal connector. This configuration enables the shower head 120 to have a movable function, allowing the user to drive the shower head 120 to rotate relative to the connecting pipe 110, thereby enabling manual adjustment of the water outlet angle of the shower head 120 and increasing the convenience of spraying.

[0100] Specifically, the universal joint assembly includes an adjusting nut 131, a pressure ring 132, a bottom ring 133, and a hollow spherical joint 134.

[0101] The upper end of the shower head 120 extends upward to form a connecting portion, which is provided with external threads and a through-hole. The bottom ring 133 and the pressure ring 132 can be made of rubber, with the bottom ring 133 positioned at the mounting hole. The upper end of the hollow spherical connector 134 is connected and fixed to the connecting pipe 110, such as through a threaded connection. The hollow spherical connector 134 has a hollow cavity forming a through-hole, allowing the water inlet pipe 310 to extend into the shower head 120 via the connecting pipe 110 and the hollow spherical connector 134. The pressure ring 132 is positioned above the bottom ring 133, and the hollow spherical connector 134 is positioned between and in contact with the bottom ring 133 and the pressure ring 132.

[0102] The adjusting nut 131 is hollow and has a through-cavity. The inner circumferential wall of the cavity is provided with internal threads. The adjusting nut 131 is located above the pressure ring 132, and the adjusting nut 131 is threadedly connected to the connecting part of the shower head 120. A cavity is formed between the adjusting nut 131 and the connecting part. The bottom ring 133, the hollow spherical connector 134, and the pressure ring 132 are located in this cavity. The bottom ring 133, the hollow spherical connector 134, and the pressure ring 132 together form a spherical connection structure, which can realize the angle adjustment of the shower head 120.

[0103] When the adjusting nut 131 is tightened, it applies downward pressure to the pressure ring 132, causing the pressure ring 132 and the bottom ring 133 to cooperate and apply greater compression and restriction to the hollow spherical connector 134, preventing the shower head 120 from adjusting its angle relative to the hollow spherical connector 134 and the connecting pipe 110. When the adjusting nut 131 is loosened, the downward pressure on the pressure ring 132 is reduced, allowing the user to adjust the angle of the shower head 120 relative to the hollow spherical connector 134 and the connecting pipe 110. Of course, the angle adjustment force of the shower head 120 can be adjusted by rotating the adjusting nut 131 around its vertically extending axis.

[0104] In some embodiments, such as Figure 5 and Figure 6As shown, the shower head 120 has a hollow interior forming an inner water cavity 121, an outer water cavity 122, and a receiving cavity 123.

[0105] Understandably, the shower head 120 has an inner ring water outlet plate 124 and an outer ring water outlet plate 125. Both the inner ring water outlet plate 124 and the outer ring water outlet plate 125 are provided with multiple water outlet holes, which spray water downwards. The inner ring water outlet plate 124 is provided with an inner ring water cavity 121, and the outer ring water outlet plate 125 is provided with an outer ring water cavity 122. Therefore, the lower surface of the shower head 120 is the water outlet surface. A three-way connector 126 is provided between the inner and outer plates. The three-way connector 126, the inner plate, and the outer plate are all made of the same material. The inner and outer plates are connected by the three-way connector 126, which has a cavity to facilitate pipe arrangement.

[0106] The receiving cavity 123 is located above the inner ring water cavity 121 and the outer ring water cavity 122. The receiving cavity 123 is connected to the mounting hole of the connection part of the shower head 120. A three-position three-way valve 140 is installed in the receiving cavity 123. The three-position three-way valve 140 is an electrically controlled valve. The three-position three-way valve 140 has an inlet, a first outlet, and a second outlet. The first outlet is connected to the inner ring water pipe 151, which is connected to the inner ring water cavity 121. The second outlet is connected to the outer ring water pipe 152, which is connected to the outer ring water cavity 122. The three-position three-way valve 140 can be electrically connected to the controller 20, allowing the controller 20 to send corresponding control commands to the opening and closing actions of the three-position three-way valve 140.

[0107] With this configuration, the water flow direction can be controlled by the three-position three-way valve 140, allowing water to flow only to the inner ring water chamber 121 or the outer ring water chamber 122, or to both the inner ring water chamber 121 and the outer ring water chamber 122 simultaneously, thereby enabling the switching of three modes of the shower head 120: water flowing out from the inner plate alone, water flowing out from the outer plate alone, and water flowing out from both the inner and outer plates simultaneously.

[0108] An additional mounting hole is added to the mounting rod 200 to accommodate the water outlet mode button 730. The water outlet mode button 730 is electrically connected to the controller 20, allowing the user to switch between three modes by pressing the button. For example, pressing the button once activates water outlet from the inner disc only; pressing it again activates water outlet from the outer disc only; and pressing it again activates water outlet from both the inner and outer discs simultaneously.

[0109] In some embodiments, such as Figure 5 and Figure 6As shown, the shower head 120 has an illumination function. Specifically, a light strip 160, which is an LED light strip, is provided on the lower surface of the shower head 120, and it surrounds the outer perimeter of the shower head 120. The light strip 160 can be electrically connected to the controller 20. A button is provided on the mounting rod 200 to control the on / off state of the light strip 160. Alternatively, the on / off state of the light strip 160 can also be controlled using existing mature voice control technology.

[0110] Understandably, the shower head 120 has a cavity to accommodate the light strip 160, preventing it from aging due to moisture. When the light strip 160 is turned on, it creates a pleasant ambiance and enhances the visual comfort of showering. The cable 320 within the mounting cavity 210 extends into the receiving cavity 123 via the cable routing cavity of the slip ring 400 and the connecting pipe 110, providing power to the three-position three-way valve 140 and the light strip 160, as well as enabling control signal transmission from the controller 20.

[0111] In addition, such as Figure 1 , Figure 7 and Figure 8 As shown, this embodiment of the invention also provides a control method for an overhead shower system, applied to the overhead shower system of the above embodiment. The control method includes the following steps:

[0112] S1: Control the height measurement sensor 30 to acquire real-time height data of the user located in the detection area.

[0113] Once a user enters the detection area, the height measurement sensor 30 automatically collects the user's real-time height data and transmits the data to the controller 20. This setup eliminates the need for the user to manually input their height, making it very convenient. Understandably, the height measurement sensor 30 is always operational. Alternatively, a human body sensor, such as a thermal infrared sensor, can be used to monitor the presence of people in the detection area, allowing the controller 20 to activate the height measurement sensor 30 and initiate data collection.

[0114] S2: Control the vertical movement of the lifting overhead shower head 10 to adjust its height position based on real-time height data and the preset height difference. The preset height difference is the set height distance between the lifting overhead shower head 10 and the user's head.

[0115] The user can input a preset height difference value into the controller 20. After receiving the real-time height data from the height measurement sensor 30, the controller 20 calculates the height position data of the lifting overhead shower 10 based on the sum of the preset height difference and the real-time height data. This allows the controller to control the lifting overhead shower 10 to move vertically and automatically adjust its height position so that the height distance between the lifting overhead shower 10 and the user reaches the preset height difference.

[0116] In some embodiments, the height measurement sensor 30 collects data from the user only once. In this case, the collected real-time height data is the user's height data. In this embodiment, the height position of the lifting overhead shower head 10 remains unchanged during the user's showering process, which satisfies the requirement of automatically controlling the height position of the lifting overhead shower head 10 according to users of different heights, without the need for manual input of height data.

[0117] After the user finishes showering, the lift-up overhead shower head 10 will automatically reset and rise to the set position. After the height measurement sensor 30 collects the user's height data, the lift-up overhead shower head 10 will move downwards to adjust the height distance between the lift-up overhead shower head 10 and the user.

[0118] If multiple people enter the detection area, the controller 20 will take the value based on the largest height and then control the area accordingly.

[0119] In other embodiments, the controller 20 automatically adjusts the height of the lifting overhead shower head 10 according to the height data. Specifically, if the height data is less than or equal to 1.4 meters, the lifting overhead shower head 10 is lowered to the lowest position, at which time the height distance between the lifting overhead shower head 10 and the ground is 1.7 meters.

[0120] For heights greater than 1.4 meters and less than or equal to 1.5 meters, the height distance between the lifting overhead shower head 10 and the ground is 1.8 meters; for heights greater than 1.5 meters and less than or equal to 1.6 meters, the height distance is 1.9 meters; for heights greater than 1.6 meters and less than or equal to 1.7 meters, the height distance is 2 meters; and for heights greater than 1.7 meters and less than or equal to 1.8 meters, the height distance is 2.1 meters.

[0121] For individuals with a height greater than 1.8 meters, the lifting overhead shower head 10 rises to its highest position, at which point the height distance between the lifting overhead shower head 10 and the ground is 2.2 meters.

[0122] In some other embodiments, the height measurement sensor 30 continuously collects real-time height data of the user located within a detection zone, which is situated within a shower area. In this embodiment, the real-time height data is the height difference between the user's highest point and the ground level of the detection zone.

[0123] During showering, users may stand to wash their hair, rubbing it with both hands; or bend over to rub their legs; or bend over so that the liftable overhead shower 10 can massage and rinse their back. The height measurement sensor 30 can collect the height difference between the user's highest point and the ground in the detection area, allowing the controller 20 to calculate the real-time height difference between the user and the liftable overhead shower 10. Based on this real-time height difference, the controller automatically adjusts the height of the liftable overhead shower 10 to achieve a preset height difference, thus enabling real-time intelligent adjustment of the liftable overhead shower 10's height during showering to meet different user needs, such as standing showering, bending over showering, or sitting showering.

[0124] In the case where the height measurement sensor 30 continuously collects real-time height data from users in the shower, the control method also includes step S3. For example... Figure 1 , Figure 7 and Figure 9 As shown, step S3 follows step S2. Specifically, step S3: if the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, then the lifting top shower head 10 remains stationary. Here, the real-time height difference is the real-time height distance between the lifting top shower head 10 and the user's highest point.

[0125] Because users make various movements while showering, the real-time height difference between the user and the lifting overhead shower head 10 changes, causing the lifting overhead shower head 10 to continuously move to maintain the preset height difference between itself and the user. This leads to increased energy consumption and a reduced lifespan for the lifting overhead shower head 10.

[0126] After the height of the lifting overhead shower 10 is adjusted, the height measurement sensor 30 will still collect the user's real-time height data. If the user bends down to pick up an item or bends down to rub their legs, and the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, the preset height difference and the first set value can be input by the user or the manufacturer. The first set value can be 50 mm. Then the controller 20 will control the lifting overhead shower 10 to remain stationary and maintain its original state, so that the user can use the lifting overhead shower 10 after completing the bending down to pick up an item or bending down to rub their legs, thus avoiding the continuous lifting and lowering of the lifting overhead shower 10, which would lead to increased energy consumption.

[0127] If a user is sitting while showering and the real-time height difference is greater than the sum of the preset height difference and the first set value, then the controller 20 will send a control command to the lifting overhead shower head 10 to raise or lower the lifting overhead shower head 10, thereby adjusting the distance between the lifting overhead shower head 10 and the user to equal the preset height difference.

[0128] Furthermore, the control method also includes step S4. Specifically, step S4: if the real-time height difference is less than or equal to the difference between the preset height difference and the second set value, then the lifting overhead shower head 10 remains stationary.

[0129] Considering the scenario of a user washing their hair while standing, the real-time height difference between the lifting shower head 10 and the user changes due to the user's hands rubbing their hair. To reduce the energy consumption of the lifting shower head 10, the controller 20 will keep the lifting shower head 10 stationary, and in this situation, the user's hands will not collide with the lifting shower head 10. If the user raises their hands, causing the real-time height difference to exceed the difference between the preset height difference and the second set value, the controller 20 will send a control command to the lifting shower head 10 to raise it, thus preventing the lifting shower head 10 from colliding with the user's hands.

[0130] Furthermore, the control method also includes step S5. Specifically, in step S5: if the real-time height difference is greater than the sum of the preset height difference and the first set value, and its duration is greater than or equal to the set duration (which can be 30 seconds or 1 minute, etc.), then the user can use a seated shower method. In this case, the controller 20 will control the lifting overhead shower head 10 to move downwards, making the vertical distance between the lifting overhead shower head 10 and the user equal to the preset height difference. If the real-time height difference is greater than the sum of the preset height difference and the first set value, and its duration is less than the set duration, then the user can bend over or squat to retrieve items such as soap or shower gel. After retrieving the items, the user will stand up to shower. In this case, the controller 20 will control the lifting overhead shower head 10 to remain stationary.

[0131] Additionally, if the user presses the up button 710 or the down button 720, the controller 20 will not automatically adjust the lifting overhead shower head 10 according to the preset height difference, thus disabling the automatic sensing and real-time height adjustment function of the overhead shower system. When the user leaves the detection area, if the height measuring sensor 30 does not collect data within a set time of 1 minute, that is, the collected real-time height data is zero, the lifting overhead shower head 10 will automatically reset, rise to the highest position, and return to the automatic height adjustment mode.

[0132] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A top-spray shower system, characterized in that, include: Retractable overhead shower head; Altitude measurement sensor, which is used to measure the user's real-time altitude data; The controller is electrically connected to both the lifting overhead shower head and the height measurement sensor. The controller controls the height measurement sensor to acquire real-time height data of the user located in the detection area; the controller controls the lifting overhead shower head to move up and down to adjust its height position based on the real-time height data and a preset height difference, wherein the preset height difference is a set height distance between the lifting overhead shower head and the user's head, the real-time height data is the height difference between the user's highest point and the ground in the detection area, and the height position data of the lifting overhead shower head is calculated based on the sum of the preset height difference and the real-time height data, and the detection area is located within the shower area; If the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, the lifting overhead shower head remains stationary, wherein the real-time height difference is the real-time height distance between the lifting overhead shower head and the user's highest point; If the real-time height difference is less than or equal to the difference between the preset height difference and the second set value, then the lifting overhead shower head remains stationary. If the real-time height difference is greater than the sum of the preset height difference and the first set value and its duration is greater than or equal to the set duration, then the controller controls the lifting top shower head to move downward, so that the vertical distance between the lifting top shower head and the user is equal to the preset height difference. If the real-time height difference is greater than the sum of the preset height difference and the first set value, and its duration is less than the set duration, then the controller controls the lifting overhead shower to remain stationary.

2. The overhead shower system according to claim 1, characterized in that, The liftable overhead shower head includes: The overhead shower head has a connection end; The mounting rod extends vertically and is located behind the overhead shower head. The mounting rod is hollow to form a mounting cavity, and the rear side of the mounting rod has an opening that extends vertically and communicates with the mounting cavity. A lifting drive mechanism is disposed within the mounting cavity. The lifting drive mechanism has a movable end that can move up and down. The movable end extends out of the opening and is connected to the connecting end.

3. The overhead shower system according to claim 2, characterized in that, The lifting drive mechanism includes: A drive motor, which has an output shaft; A screw and nut assembly, comprising a screw and a nut, the screw extending vertically, one end of the screw being drively connected to the output shaft; An inner guide sleeve slides up and down with the mounting rod, the inner guide sleeve is fitted onto the nut, and the inner guide sleeve is connected to the connecting end.

4. The overhead shower system according to claim 3, characterized in that, Limit switches are provided at both ends of the screw, and the limit switches and the drive motor are electrically connected to the controller.

5. The overhead shower system according to claim 3, characterized in that, The connecting end is provided with a slip ring, which is sleeved on the mounting rod and slides up and down with the mounting rod. The slip ring is connected to the inner guide sleeve. The slip ring is hollow to form a cable routing cavity. The cable routing cavity is provided with an inlet and an outlet. The inlet communicates with the opening. The connecting end is provided with an inlet hole, which communicates with the outlet. Both ends of the mounting rod extend backward to form mounting parts. At least one of the mounting parts is provided with a cable routing hole that communicates with the mounting cavity.

6. The overhead shower system according to claim 2, characterized in that, The lower end of the mounting rod forms a handrail, which is located below the overhead shower head.

7. The overhead shower system according to claim 6, characterized in that, It also includes an alarm; the mounting rod is equipped with an emergency call button, which is located below the overhead shower head, and the emergency call button and the alarm are electrically connected to the controller.

8. The overhead shower system according to claim 2, characterized in that, The overhead shower includes a connecting pipe, a shower head, and a universal connecting assembly. One end of the connecting pipe is the connecting end, and the other end is connected to the shower head through the universal connecting assembly.

9. The overhead shower system according to claim 8, characterized in that, The shower head is hollow, forming a receiving cavity, an inner ring water cavity, and an outer ring water cavity. A three-position three-way valve is provided in the receiving cavity. The three-position three-way valve has a water inlet, a first water outlet, and a second water outlet. The first water outlet is connected to the inner ring water cavity, and the second water outlet is connected to the outer ring water cavity.

10. The overhead shower system according to claim 8, characterized in that, The lower surface of the shower head is provided with a light strip, which is arranged around the outer perimeter of the shower head.

11. A control method for an overhead shower system, applied to the overhead shower system as described in any one of claims 1 to 10, characterized in that, Includes the following steps: S1: Control the height measurement sensor to acquire real-time height data of the user located in the detection area; S2: The lifting overhead shower head is controlled to move up and down to adjust its height position based on the real-time height data and the preset height difference. The preset height difference is the set height distance between the lifting overhead shower head and the user's head. The real-time height data is the height difference between the user's highest point and the ground in the detection area. The height position data of the lifting overhead shower head is calculated based on the sum of the preset height difference and the real-time height data. S3: If the real-time height difference is less than or equal to the sum of the preset height difference and the first set value, then keep the lifting top shower head stationary, wherein the real-time height difference is the real-time height distance between the lifting top shower head and the user's highest point; S4: If the real-time height difference is less than or equal to the difference between the preset height difference and the second set value, then keep the lifting overhead shower head stationary; S5: If the real-time height difference is greater than the sum of the preset height difference and the first set value and its duration is greater than or equal to the set duration, then the controller controls the lifting top shower head to move downwards, so that the vertical distance between the lifting top shower head and the user is equal to the preset height difference; if the real-time height difference is greater than the sum of the preset height difference and the first set value and its duration is less than the set duration, then the controller controls the lifting top shower head to remain stationary.

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