Mechanical delay device

Abstract

The invention discloses a mechanical time-delay device, which realizes a non-electric time-delay flushing function and comprises a shell, a power assembly, a first sliding block, a first spring, a movable assembly and a second spring, the first sliding block is slidably matched in the shell, and the two ends of the first sliding block are matched with the output end of the power assembly and the first spring correspondingly. The movable assembly and the first sliding block are in sliding fit in the shell side by side, and a first clamping hook and a second clamping hook are arranged on the opposite faces of the first sliding block and the movable assembly. The second spring is arranged in the shell and acts on the movable assembly; the power assembly pushes the first sliding block to move and compresses the first spring when outputting power. When the power assembly restores the standby state, the first spring releases the stored energy and drives the first sliding block to reset, then the first clamping hook buckles the second clamping hook to drive the movable assembly to slide and compress the second spring, and at the moment, the movable assembly serves as a power output mechanism of the mechanical delay device; when the second clamping hook and the first clamping hook are unhooked, stored energy of the second spring is released so as to push the movable assembly to reset.

Description

Technical Field

[0001] This invention belongs to the field of bathroom equipment technology, and specifically refers to a mechanical delay device. Background Technology

[0002] In daily life, people usually need to manually press the flush button to empty the toilet bowl after using it. Smart toilets, through preset circuit board programs, can sense when the user gets off and automatically activate the solenoid valve flushing system, achieving automatic flushing without manual operation and greatly improving the convenience of use.

[0003] However, these automatic flushing systems rely on electricity, and the automatic flushing function will fail if the battery runs out (for battery-powered systems) or there is a power outage (for plug-in systems), limiting their usability. Furthermore, although smart toilet technology is maturing, it is not yet widely adopted. Most households still use traditional toilets, and upgrading to a smart toilet with automatic flushing would involve high retrofit costs, which hinders the widespread adoption of smart toilets. Summary of the Invention

[0004] The purpose of this invention is to provide a mechanical delay device that solves the problems existing in the prior art. It can realize the automatic flushing function of the toilet without the need for electric drive, meet the needs of specific application scenarios, and thus improve the user experience.

[0005] To achieve the above objectives, the solution of the present invention is: A mechanical time-delay device includes a housing, a power component, a first slider, a first spring, a movable component, and a second spring. The power component outputs power or returns to a standby state upon changes in external pressure. The first slider is slidably fitted within the housing, with its two ends respectively engaging with the output end of the power component and the first spring. The movable component is slidably fitted alongside the first slider within the housing, and a first hook and a second hook are provided on the opposite surfaces of the first slider and the movable component. The second spring is disposed within the housing and acts on the movable component. When the power component outputs power, it pushes the first slider to move and compresses the first spring, causing the first spring to store energy. When the power component returns to a standby state, the first spring releases its stored energy and drives the first slider to reset. Then, the first hook engages the second hook, causing the movable component to slide and compress the second spring. At this time, the movable component serves as the power output mechanism of the mechanical time-delay device. When the second hook disengages from the first hook, it releases the stored energy of the second spring to push the movable component to reset.

[0006] The power assembly includes a piston rod, a water bladder, a hydraulic valve body, a piston seat, and a diaphragm; the piston rod is positioned opposite the end of the first slider; the water bladder is disposed on the bottom surface of the toilet seat; the hydraulic valve body is installed inside the housing, with its two ends communicating with the water bladder and the piston seat respectively; the diaphragm is disposed at the connection between the piston seat and the hydraulic valve body; the piston rod movably passes through the piston seat and abuts against the diaphragm.

[0007] Preferably, the power assembly further includes a three-way adapter, a one-way valve, and a connecting pipe; the three-way adapter connects the hydraulic valve body and the water bladder; the one-way valve is disposed within the hydraulic valve body and seals against the inner wall of the hydraulic valve body; both ends of the connecting pipe are respectively connected to the three-way adapter and the hydraulic valve body and communicate with both sides of the one-way valve; the cross-sectional area of ​​the connecting pipe is smaller than the cross-sectional area of ​​the hydraulic valve body. Alternatively, the power assembly further includes a one-way valve, a connecting seat, a connecting pipe, and a sealing cap; the connecting seat is disposed within the hydraulic valve body and has two passages, each connecting to the input end and the output end of the hydraulic valve body respectively; the one-way valve and the connecting pipe are respectively sealed within the two passages; the sealing cap sealably covers the opening of the hydraulic valve body.

[0008] The power assembly includes a button base, an exhaust nozzle, a button, and a pneumatic valve body. The button base is located on the bottom surface of the toilet seat and has an air chamber inside. The exhaust nozzle is located on the button base, and the button is dynamically sealed within the air chamber and blocks the exhaust nozzle when pressed. The pneumatic valve body is installed inside the housing and is connected to the air chamber and the exhaust nozzle via air pipes. The end of the first slider is dynamically sealed through the pneumatic valve body.

[0009] Preferably, the seat body is provided with a movable seat, which dynamically seals with the inner wall of the air chamber, and the button is movably inserted through the cover and detachably connected to the movable seat; the inner side of the movable seat is provided with a leather cup that dynamically seals with the inner wall of the air chamber; a fourth spring is provided between the leather cup and the seat body.

[0010] Preferably, the circumferential surface of the first slider is fitted with several sealing rings to achieve a dynamic seal between the end of the first slider and the inner wall of the pneumatic valve body; the power assembly further includes a one-way valve and a connector; the one-way valve is disposed in the pneumatic valve body and seals against the inner wall of the pneumatic valve body, and the connector is disposed in the outer shell and detachably connected to the pneumatic valve body; the air chamber, the exhaust nozzle, and the communication points with the pneumatic valve body are respectively located at the two ends of the one-way valve; a sealing gasket opposite to the exhaust nozzle is provided on the button seat.

[0011] The movable component includes a second slider that slides within the housing and a swing block that pivotally engages with the second slider; the second slider is provided with an output rod that outputs power; the second hook is provided on the opposite side of the swing block and the first slider; the two ends of the second spring abut against the inner wall of the housing and the swing block, respectively.

[0012] Preferably, the mechanical delay device is further provided with a pressure block and a third spring; the pressure block is slidably fitted inside the housing and is opposite to the end of the swing block away from the second slider, and the pressure block and the first slider are respectively located on both sides of the swing block; the third spring is disposed between the inner wall of the housing and the pressure block, so that the pressure block abuts against the end side of the swing block.

[0013] Preferably, the side of the swing block opposite to the first slider at the end away from the second slider is provided with a guide slope, and the inner wall of the outer shell is provided with a guide ramp opposite to the guide slope; when the second slider and the swing block are driven by the first slider to compress the second spring, the guide slope contacts the guide ramp and drives the swing block to swing, so that the second hook disengages from the first hook.

[0014] The movable component includes a second slider that slides within the housing, a swing block pivotally connected to the second slider, a hook, and a spring. The second slider is provided with an output rod for outputting power. The hook is movably connected to the opposite side of the swing block and the first slider, and is provided with a second hook that engages with the first hook. The spring is disposed within the swing block and is used to provide elastic force to reset the hook towards the direction of the first hook. The two ends of the second spring abut against the inner wall of the housing and the swing block, respectively.

[0015] Preferably, the side of the swing block away from the second slider and facing away from the first slider is provided with a second inclined surface, and the inner wall of the outer shell is provided with a first protrusion opposite to the second inclined surface. After the first protrusion abuts against the second inclined surface, the swing block is allowed to swing away from the first slider.

[0016] Preferably, the side of the swing block facing the first slider and away from the second slider is provided with a third inclined surface, and the inner wall of the outer shell is provided with a second protrusion opposite to the third inclined surface. After the second protrusion abuts against the third inclined surface, it drives the swing block to swing away from the first slider.

[0017] The movable component is connected to the mechanical flushing mechanism of the toilet. When the movable component is pushed by the first slider, it outputs power to activate the mechanical flushing mechanism of the toilet.

[0018] Preferably, the mechanical flushing mechanism is a pilot valve, and the output rod of the movable component acts on the sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod retracts, the sealing diaphragm is in the open state; when the output rod extends, the sealing diaphragm is in the closed state. Alternatively, the mechanical flushing mechanism includes a pull rope and a drain valve, with the two ends of the pull rope connected to the movable component and the stop plug of the drain valve, respectively.

[0019] After adopting the above technical solution, the present invention has the following technical effects: (1) The present invention converts the pressure applied by the user into the power of the first slider through the power component. The hook and unhook states between the first hook of the first slider and the second hook of the movable component can realize the linkage and disengagement of the two. Furthermore, the first slider and the movable component are each equipped with a corresponding spring for drive reset, thereby forming a complete delayed drive logic.

[0020] (2) The mechanical delay device of the present invention can be installed on any type of toilet (ordinary or smart) for modification or upgrade, and the power output by the active component is linked with the mechanical flushing mechanism of the toilet to realize the automatic opening of the water tank / water bag drain outlet, and realize automatic drainage and flushing after the user finishes using the toilet and leaves the seat.

[0021] (3) This invention is a purely mechanical structure design that does not require electric drive, is easy to use, and has a simple structure and low cost, making it easy to promote in the market.

[0022] (4) The present invention can also adjust the time before the first hook and the second hook come into contact during the reset process of the first slider by adjusting the position of the first hook and the second hook on the corresponding parts and the coefficient of each spring, thereby adjusting the delay time of the delayed flushing, which is more flexible. Attached Figure Description

[0023] Figure 1 A perspective view of a product using the first embodiment of the present invention.

[0024] Figure 2 This is an exploded view of the first embodiment of the present invention.

[0025] Figure 3 This is a schematic diagram of the standby state according to the first embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the human body's sitting state according to the first embodiment of the present invention.

[0027] Figure 5 This is a schematic diagram of the pressure pack in the open state according to the first embodiment of the present invention.

[0028] Figure 6This is a schematic diagram of the pendulum block about to detach from the hook in the first embodiment of the present invention.

[0029] Figure 7 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0030] Figure 8 A perspective view of a product incorporating the third embodiment of the present invention.

[0031] Figure 9 This is an exploded view of the third embodiment of the present invention.

[0032] Figure 10 This is a schematic diagram of the standby state according to the third embodiment of the present invention.

[0033] Figure 11 This is a schematic diagram of the human body's sitting state according to the third embodiment of the present invention.

[0034] Figure 12 This is a schematic diagram of the pressure pack in the open state according to the third embodiment of the present invention.

[0035] Figure 13 This is a schematic diagram of the unhooked state of the pendulum block according to the third embodiment of the present invention.

[0036] Figure 14 This is an exploded view of the fourth embodiment of the present invention.

[0037] Figure 15 This is a schematic diagram of the standby state according to the fourth embodiment of the present invention.

[0038] Figure 16 This is a schematic diagram of the human body's sitting state according to the fourth embodiment of the present invention.

[0039] Figure 17 This is a schematic diagram of the pressure pack in the open state according to the fourth embodiment of the present invention.

[0040] Figure 18 This is a schematic diagram of the unhooked state of the pendulum block according to the fourth embodiment of the present invention.

[0041] Figure 19 This is a schematic diagram of the structure of the fifth embodiment of the present invention.

[0042] Figure 20 This is a schematic diagram of the structure of the sixth embodiment of the present invention.

[0043] Explanation of icon numbers: 1-Outer shell; 11-Upper shell; 12-Lower shell; 121-First slide groove; 122-Second slide groove; 123-First positioning post; 124-Second positioning post; 125-Third slide groove; 126-Guide ramp; 127-First protrusion; 128-Second protrusion; 2-Power assembly; 21-Piston rod; 22-Water bladder; 23-Hydraulic valve body; 24-Piston seat; 25-Diaphragm; 26-T-connector; 27-Check valve; 28-Connecting pipe; 29-Button seat; 291-Air chamber; 292-Seat body; 293-Cover body; 210-Exhaust nozzle; 220-Button; 230-Pneumatic valve body; 240, 240'-Air pipe; 250-Modible seat; 260-Leather cup; 270-Fourth spring; 280-Connector; 290-Sealing gasket; 2100-Connecting seat; 2200-Connecting pipe; 2300-Sealing cover; 2400-Sealing plug; 3-First slider; 31-First hook; 32-First spring cavity; 4-First spring; 5-Active component; 51-Second slider; 511-Output rod; 52-Swing block; 521-Second hook; 522-Second spring cavity; 523-First inclined plane; 524-Second inclined plane; 525-Third inclined plane; 53-Hook piece; 531-Second hook; 54-Spring piece; 6-Second spring; 7-Pressure block; 71-Pressure rod; 8-Third spring; 9-Sealing ring; a- Toilet seat; b- Pilot valve; c- Sealing diaphragm; d- Pull cord; e- Drain valve; f- Stop valve. Detailed Implementation

[0044] To further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0045] refer to Figures 1 to 20 As shown, the present invention discloses a mechanical delay device, including a housing 1, a power component 2, a first slider 3, a first spring 4, a movable component 5, and a second spring 6; The outer shell 1 is the housing part of the mechanical delay device. It is generally immovable after installation and is used to cooperate with other components of the mechanical delay device to achieve assembly. For example, in the first to third embodiments of the present invention, the outer shell 1 is installed near the bearing of the toilet seat a, which may be inside or next to the bearing. Power component 2 outputs power or returns to standby state when subjected to changes in external pressure. The first slider 3 is slidably fitted inside the outer casing 1, and its two ends are respectively fitted with the output end of the power component 2 and the first spring 4; The movable component 5 and the first slider 3 are slidably fitted together in the housing 1, and the opposite surfaces of the first slider 3 and the movable component 5 are provided with a first hook 31 and a second hook 521; the second spring 6 is disposed in the housing 1 and acts on the movable component 5. When the power component 2 outputs power, it pushes the first slider 3 to move and compresses the first spring 4, causing the first spring 4 to store energy. When the power component 2 returns to the standby state, the first spring 4 releases the stored energy and drives the first slider 3 to reset. Then, the first hook 31 hooks the second hook 521 to drive the movable component 5 to slide and compress the second spring 6. At this time, the movable component 5 acts as the power output mechanism of the mechanical delay device. When the second hook 521 disengages from the first hook 31, it releases the stored energy of the second spring 6 to push the movable component 5 to reset.

[0046] Through the above scheme, the present invention converts the pressure applied by the user into the power of the first slider 3 via the power component 2. The hook and unhooking states between the first hook 31 of the first slider 3 and the second hook 521 of the movable component 5 can realize the linkage and disengagement of the two. Furthermore, the first slider 3 and the movable component 5 are each equipped with a corresponding spring for drive reset, thus constituting a complete delayed drive logic: Reference Figures 3 to 6 or Figures 10 to 13 As shown, when the pressure-receiving end of the power component 2 is positioned at a certain location on the toilet, such as on the toilet seat a, when the user sits down, the pressure received by the power component 2 is converted into stored energy in the first spring 4. When the user leaves the seat, the stored energy of the first spring 4 is released, which can drive the movable component 5 to output power outward through the first hook 31 and the second hook 521, thereby realizing the linkage to open the mechanical flushing mechanism of the toilet, achieving the purpose of automatic flushing after the user leaves the seat. After the movable component 5 is driven by the first slider 3 to slide a certain distance, the second hook 521 disengages from the first hook 31, and the movable component 5 resets under the drive of the second spring 6, thereby realizing the linkage to close the mechanical flushing mechanism of the toilet, completing the entire automatic flushing action process. Based on the above action process, the mechanical delay device of the present invention can be installed on any type of toilet (ordinary or smart) for modification or upgrade, and through the power output by the movable component 5, it can link with the mechanical flushing mechanism of the toilet to realize the automatic opening of the water tank / water bag drain outlet, realizing automatic drainage and flushing after the user finishes using the toilet and leaves the seat. Meanwhile, this invention is a purely mechanical design, requiring no electric drive, making it convenient to use. Its simple structure and low cost facilitate market promotion. Furthermore, this invention can adjust the time before the first hook 31 and the second hook 521 contact each other during the resetting process of the first slider 3, thereby adjusting the delay time of the delayed flushing, offering greater flexibility.

[0047] In some embodiments of the present invention, the outer shell 1 includes an upper shell 11 and a lower shell 12 that can be assembled by means of snap-fit ​​connection, which facilitates the processing and forming of a groove-shaped structure for other parts to cooperate with, and is easier to assemble; the lower shell 12 is provided with a first sliding groove 121 and a second sliding groove 122 for the first slider 3 and the movable component 5 to slide and cooperate respectively, and the first sliding groove 121 and the second sliding groove 122 are parallel and connected.

[0048] Furthermore, the end face of the first slide groove 121 is provided with a first positioning post 123, and the first slider 3 is provided with a first spring cavity 32. The two ends of the first spring 4 are respectively engaged with the first positioning post 123 and the first spring cavity 32 to achieve positioning engagement of the two ends of the first spring 4 and ensure the positional stability of the first spring 4.

[0049] refer to Figures 1 to 6 As shown, a first embodiment of the present invention is illustrated.

[0050] In the first embodiment, the aforementioned power component 2 is a hydraulic power mechanism, which includes a piston rod 21, a water bladder 22, a hydraulic valve body 23, a piston seat 24, and a diaphragm 25. The piston rod 21 is disposed opposite to the end of the first slider 3. The water bladder 22 can be disposed at the position required by the user, preferably the bottom surface of the toilet seat a, so that when the user sits down during toilet use, pressure will be naturally applied to the water bladder 22, thereby activating the mechanical delay device without deliberate operation, giving the user a sense of "automation". The hydraulic valve body 23 is installed inside the housing 1, and its two ends are respectively connected to the water bladder 22 and the piston seat 24. The diaphragm 25 is disposed at the connection between the piston seat 24 and the hydraulic valve body 23. The piston rod 21 is movably inserted through the piston seat 24 and abuts against the diaphragm 25. Therefore, when the user sits down, the water bladder 22 is compressed, squeezing out the water inside and increasing the pressure inside the hydraulic valve body 23. This pressure acts on the diaphragm 25, pushing the piston rod 21 outward. When the user gets off, the water bladder 22 is no longer compressed, the thrust on the piston rod 21 decreases, and it is pushed back to its original position by the action of the first spring 4. Two water bladders 22 can be provided, respectively arranged on both sides of the front end of the toilet seat a. The two water bladders 22 are connected, and one of them is connected to the hydraulic valve body 23 via a water pipe.

[0051] Furthermore, the aforementioned power assembly 2 also includes a three-way adapter 26, a one-way valve 27, and a connecting pipe 28. The three-way adapter 26 connects the hydraulic valve body 23 and the water bladder 22. The one-way valve 27 is disposed inside the hydraulic valve body 23 and seals against the inner wall of the hydraulic valve body 23. The two ends of the connecting pipe 28 are respectively connected to the three-way adapter 26 and the hydraulic valve body 23 and communicate with both sides of the one-way valve 27. The cross-sectional area of ​​the connecting pipe 28 is smaller than the cross-sectional area of ​​the hydraulic valve body 23, that is, the flow rate of the connecting pipe 28 is smaller than the flow rate of the hydraulic valve body 23. Due to the one-way valve 27, the water output from the water bladder 22, after passing through the one-way valve 27, can only flow back to the water bladder 22 via the direction of the connecting pipe 28, thereby limiting the reset speed of the piston rod 21, that is, limiting the reset speed of the first slider 3. Therefore, the inner diameter of the connecting pipe 28 determines the backflow rate of the power component 2, which in turn controls the reset time of the first slider 3. Thus, by replacing the connecting pipe 28 with a different inner diameter, the delay time of the delayed flush can be controlled and adjusted. Replacing the connecting pipe 28 is also very convenient.

[0052] In the first embodiment, the movable component 5 includes a second slider 51 slidably fitted within the housing 1, and a swing block 52 pivotally fitted with the second slider 51. The second slider 51 is provided with an output rod 511 for outputting power. The second hook 521 is provided on the opposite side of the swing block 52 and the first slider 3. The two ends of the second spring 6 abut against the inner wall of the housing 1 and the swing block 52, respectively. A second positioning post 124 is provided inside the housing 1 (i.e., inside the second groove 122), and the swing block 52 is provided with a second spring cavity 522. The two ends of the second spring 6 respectively engage with the second positioning post 124 and the second spring cavity 522 to achieve positioning engagement of the two ends of the second spring 6 and ensure the positional stability of the second spring 6.

[0053] Furthermore, the aforementioned mechanical delay device also includes a pressure block 7 and a third spring 8. The pressure block 7 is slidably fitted inside the outer casing 1 and is opposite to the end of the swing block 52 away from the second slider 51, with the pressure block 7 and the first slider 3 located on opposite sides of the swing block 52. The third spring 8 is disposed between the inner wall of the outer casing 1 and the pressure block 7 so that the pressure block 7 abuts against the end side of the swing block 52. Under the combined action of the pressure block 7 and the third spring 8, the swing block 52 is pushed towards the first slider 3, ensuring that the first latch 31 can engage with the second latch 521. The outer casing 1 is provided with a third sliding groove 125 for assembling the pressure block 7 and the third spring 8, which limits the sliding position and direction of the pressure block 7, preventing interference with the movement path of the swing block 52. The pressure block 7 is provided with a pressure rod 71 that extends through the third sliding groove 125 and abuts against the side of the swing block 52.

[0054] Secondly, the side of the swing block 52 opposite to the first slider 3 at the end away from the second slider 51 is provided with a first inclined surface 523, and the inner wall of the outer shell 1 (i.e., the inner wall of the second slide groove 122) is provided with a guide slope 126 opposite to the first inclined surface 523. Thus, the guide slope 126 and the pressure block 7 act on both sides of the end of the swing block 52 respectively: when the second slider 51 and the swing block 52 are driven by the first slider 3 to compress the second spring 6, the first inclined surface 523 contacts the guide slope 126 and drives the swing block 52 to swing, thereby causing the second hook 521 to disengage from the first hook 31, and the first slider 3 and the swing block 52 no longer move together. The first slider 3 resets on its own under the action of the first spring 4; then, under the action of the third spring 8, the pressure block 7 presses the swing block 52 against the guide slope 126, and the swing block 52 and the second slider 51 reset under the action of the second spring 6, finally turning off the mechanical flushing mechanism of the toilet.

[0055] The aforementioned movable component 5 is connected to the mechanical flushing mechanism of the toilet, so that when the movable component 5 is pushed by the first slider 3, it can output power to open the mechanical flushing mechanism of the toilet. Specifically, in the first embodiment, when the present invention is installed in a smart toilet, such as a pressure flushing system of a smart toilet, the aforementioned mechanical flushing mechanism is a pilot valve b. The output rod 511 of the movable component 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c: when the output rod 511 retracts, the sealing diaphragm c is in the open state, and the pressure flushing system begins to drain water; when the output rod 511 extends, the sealing diaphragm c is in the closed state, and the pressure flushing system no longer drains water. Generally, the input end of the pilot valve b is connected to the pressure relief device (such as an opening valve) of the pressure flushing system. After the pilot valve b is opened, the water in the pressure relief device is first discharged from the pilot valve b, so that the pressure relief device is opened, and after the pressure relief device is opened, the pressure tank also begins to drain water.

[0056] At this point, the working principle of the first embodiment is referenced. Figures 3 to 6 As shown: (1) When the user sits down, the water bag 22 is flattened and the water inside is squeezed out, which increases the hydraulic pressure in the hydraulic valve body 23. The pressure acts on the diaphragm 25, thereby pushing the piston rod 21 to extend. Since the pressure of the power component 2 is greater than the elastic force of the first spring 4, the first slider 3 is pushed and compresses the first spring 4, so that the first spring 4 stores energy. At this time, since the first hook 31 and the second hook 521 are inclined, the first hook 21 can pass over the second hook 521 without driving the swing block 52. Throughout the process, the hydraulic pressure output by the power component 2 is converted into the elastic potential energy of the first spring 4.

[0057] (2) When the user leaves the seat, the elastic potential energy of the first spring 4 is released, and it begins to push the first slider 3 to reset. Before the first hook 31 contacts the second hook 521, the movable component 5 consisting of the second slider 51 and the swing block 52 does not move, and the pressure flushing system has not yet been turned on. This period of time is the delay time of the present invention.

[0058] (3) After the first hook 31 and the second hook 521 come into contact, since the two planes are opposite each other, the first hook 31 hooks the second hook 521 and drives the second slider 51 and the swing block 52 to move at the same time and compress the second spring 6. The output rod 511 of the second slider 51 no longer applies pressure to the sealing diaphragm c, the pilot valve b is opened, the water inside is discharged, and then the opening valve of the pressure flushing system is opened, and finally the drainage begins.

[0059] (4) After the swing block 52 moves a certain distance, its first inclined surface 523 contacts the guide slope 126, forcing the swing block 52 to swing relative to the second slider 51, thereby causing the second hook 521 to disengage from the first hook 31. Then the first slider 3 continues to reset, and at this time the elastic potential energy of the second spring 6 is released, pushing the swing block 52 and the second slider 51 to reset. The output rod 511 presses against the sealing diaphragm c again and applies pressure to it. The pilot valve b is closed, completing the entire automatic flushing process.

[0060] refer to Figure 7 As shown, a second embodiment of the present invention is illustrated.

[0061] Most of the structural design in the second embodiment is the same as that in the first embodiment. The difference is that the second embodiment shows the invention installed in a regular toilet.

[0062] Specifically, when modifying an ordinary toilet using the device of the present invention, the output end of the movable component 5 (i.e., the output rod 511 of the second slider 51) can directly act on the button or drain valve of the water tank. When the movable component 5 is driven by the stored energy of the first spring 4, automatic flushing can be achieved by pressing the button or directly opening the drain valve. See also Figure 7 Taking the action on the drain valve as an example, the aforementioned mechanical flushing mechanism may include a pull rope d and a drain valve e, with the two ends of the pull rope d connected to the movable component 5 and the stop plug f of the drain valve e, respectively. Figure 7 With the direction in the middle as a reference, when the movable component 5 is subjected to force and moves to the left, the movable component 5 will tighten the pull rope d, thereby opening the water stop plug f through the pull rope d, and the drain valve e will start to drain; when the movable component 5 resets, the drain valve e resets under the action of gravity, and straightens the pull rope d again.

[0063] refer to Figures 8 to 13 As shown, a third embodiment of the present invention is illustrated.

[0064] In the third embodiment, the mechanical flushing mechanism connected to the aforementioned movable component 5 is also a pilot valve b, i.e., the application scenario is the same as in the first embodiment. The output rod 511 of the movable component 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c. Its specific working method and principle will not be described in detail here. The main difference between the third embodiment and the first embodiment lies in the detailed structure of the power component 2 and the way the first hook 31 and the second hook 521 cooperate.

[0065] In the third embodiment, the aforementioned power component 2 is a pneumatic power mechanism, which includes a button seat 29, an exhaust nozzle 210, a button 220, and a pneumatic valve body 230. The button seat 29 is disposed on the bottom surface of the toilet seat a, and an air chamber 291 is disposed therein. The exhaust nozzle 210 is disposed on the button seat 29, and the button 220 is dynamically sealed in the air chamber 291 and blocks the exhaust nozzle 210 when pressed. The pneumatic valve body 230 is installed in the outer casing 1 and is connected to the air chamber 291 and the exhaust nozzle 210 through air pipes 240 and 240' respectively. The end of the first slider 3 is dynamically sealed through the pneumatic valve body 230. With the above structure, when the user sits down, pressing button 220 forces air out of air chamber 291, increasing the pressure within air pressure valve body 230. Simultaneously, button 220 blocks exhaust nozzle 210, preventing air from escaping from air pressure valve body 230. The increasing air pressure then pushes the first slider 3 to move, thus enabling subsequent actions. When the user gets up, exhaust nozzle 210 opens, air pressure valve body 230 begins to release air, the first slider 3 resets under the action of the first spring 4, and air chamber 291 begins to replenish air. Therefore, when the user sits down during toilet use, pressure is naturally applied to button 220, activating the mechanical delay device without conscious operation, providing a sense of "automation."

[0066] Furthermore, the aforementioned button base 29 includes a base 292 and a cover 293, which are detachably connected to form the aforementioned air chamber 291; an exhaust nozzle 210 is disposed between the base 292 and the cover 293; a button 220 is movably disposed through the cover 293 and dynamically seals with the inner wall of the base 292; specifically, a movable seat 250 is provided inside the base 292, which dynamically seals with the inner wall of the air chamber 291, and the button 220 is movably disposed through the cover 293 and detachably connected to the movable seat 250; The inner side of the movable seat 250 is provided with a leather cup 260 that dynamically seals with the inner wall of the air chamber 291. The working principle of the leather cup 260 is the same as that of the leather cup in the air pump. When compressed, its periphery dynamically seals with the inner wall of the air chamber 291. When released, gas can enter the air chamber 291 through the gap between the leather cup 260 and the inner wall of the air chamber 291, thereby achieving air replenishment. A fourth spring 270 is provided between the leather cup 260 and the seat 292. After the user leaves the seat, the spring force of the fourth spring 270 can drive the button 220 / movable seat 250 / leather cup 260 to reset.

[0067] Meanwhile, the first slider 3 is fitted with several sealing rings 9 on its circumferential surface to achieve a dynamic seal between the end of the first slider 3 and the inner wall of the pneumatic valve body 230. The power assembly 2 also includes a one-way valve 27 and a connector 280. The one-way valve 27 is disposed inside the pneumatic valve body 230 and seals against the inner wall of the pneumatic valve body 230. The connector 280 is disposed inside the outer casing 1 and is detachably connected to the pneumatic valve body 230 for easy installation and removal of the one-way valve 27. The air chamber 291, the exhaust nozzle 210, and the pneumatic valve body 230 are located at opposite ends of the one-way valve 27. Thus, by setting the one-way valve 27, gas can be prevented from flowing back into the air chamber 291 and can only be discharged through the exhaust nozzle 210. Therefore, the orifice diameter of the vent nozzle 210 when it is not under pressure determines the venting speed, which in turn controls the reset speed / duration of the first slider 3. Thus, by replacing the vent nozzle 210 with different orifice diameters, the delay duration of the delayed flushing can be controlled and adjusted. Users only need to remove the cover 293 to replace the vent nozzle 210, which is very convenient.

[0068] Secondly, a sealing gasket 290 is provided on the button base 29, which is opposite to the exhaust port 210.

[0069] Furthermore, in the third embodiment, the aforementioned power assembly 2 is provided on the left and right sides of the toilet seat a, and the air chambers 291 of the two sets of power assemblies 2 are connected to the same tee connector and then connected to the connector 280; while the air outlet of the air pressure valve body 230 only needs to be connected to one of its exhaust nozzles 210, that is, only one exhaust nozzle 210 needs to be provided.

[0070] In the third embodiment, the aforementioned movable component 5 includes a second slider 51 slidably fitted within the outer casing 1, a swing block 52 pivotally fitted with the second slider 51, a hook 53, and a spring 54. The second slider 51 is provided with an output rod 511 for outputting power. The hook 53 is movably fitted on the opposite side of the swing block 52 and the first slider 3, and is provided with a second hook 531 that hooks and engages with the first hook 31. The spring 54 is disposed within the swing block 52 to provide elastic force to reset the hook 53 toward the direction of the first hook 31. The two ends of the second spring 6 abut against the inner wall of the outer casing 1 and the swing block 52, respectively. A second positioning post 124 is provided within the outer casing 1 (i.e., within the second slide groove 122), and the swing block 52 is provided with a second spring cavity 522. The two ends of the second spring 6 engage with the second positioning post 124 and the second spring cavity 522, respectively, to achieve positioning engagement of the two ends of the second spring 6 and ensure the positional stability of the second spring 6. One end of the aforementioned spring piece 54 is fixed relative to the inner wall of the swing block 52, and the hook piece 53 is fixed to the other end of the spring piece 54.

[0071] Furthermore, a second inclined surface 524 is provided on the side of the swing block 52 away from the second slider 51 and facing away from the first slider 3. A first protrusion 127 is provided on the inner wall of the outer casing 1 (i.e., the inner wall of the second slide groove 122) opposite to the second inclined surface 524. After the first protrusion 127 abuts against the second inclined surface 524, it allows the swing block 52 to swing away from the first slider 3. (Reference) Figure 12 , 13 As shown, during the reset process of the first slider 3, this structure can limit when the first hook 31 disengages from the second hook 531. That is, only when the first protrusion 127 gradually embeds into the recessed structure formed by the second inclined surface 524 can the corresponding end of the swing block 52 produce a swinging action, and only then can the second hook 531 disengage from the first hook 31.

[0072] Secondly, a third inclined surface 525 is provided on the side of the swing block 52 facing the first slider 3 away from the second slider 51. A second protrusion 128 is provided on the inner wall of the outer shell 1 (i.e., the inner wall of the second slide groove 122) opposite to the third inclined surface 525. After the second protrusion 128 abuts against the third inclined surface 525, it drives the swing block 52 to swing away from the first slider 3. This structure can ensure that the second hook 531 can disengage from the first hook 31, ensuring the stability of the function; while during the process of the first slider 3 being pushed by the power component 2, the second hook 531 can avoid the first hook 31. The second inclined surface 524 and the third inclined surface 525 can be arranged in parallel, so that the corresponding ends of the swing block 52 form correspondingly shaped turning parts.

[0073] refer to Figures 14 to 18 As shown, a fourth embodiment of the present invention is illustrated.

[0074] In the fourth embodiment, the above-mentioned active component 5 adopts the same structural design as the third embodiment, and the mechanical flushing mechanism connected to the active component 5 is the same as the pilot valve b, that is, the application scenario is the same as the first and third embodiments. The output rod 511 of the active component 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c. Its specific working method and principle will not be described in detail here.

[0075] In the fourth embodiment, the aforementioned power component 2 is a hydraulic power mechanism, which includes a piston rod 21, a water bladder 22, a hydraulic valve body 23, a piston seat 24, and a diaphragm 25. The piston rod 21 is disposed opposite to the end of the first slider 3. The water bladder 22 can be disposed at the position required by the user, preferably the bottom surface of the toilet seat a, so that when the user sits down during toilet use, pressure will be naturally applied to the water bladder 22, thereby activating the mechanical delay device without deliberate operation, giving the user a sense of "automation". The hydraulic valve body 23 is installed inside the housing 1, and its two ends are respectively connected to the water bladder 22 and the piston seat 24. The diaphragm 25 is disposed at the connection between the piston seat 24 and the hydraulic valve body 23. The piston rod 21 is movably inserted through the piston seat 24 and abuts against the diaphragm 25. Therefore, when the user sits down, the water bladder 22 is compressed, and the water inside is squeezed out, which increases the pressure in the hydraulic valve body 23. The pressure acts on the diaphragm 25 and pushes the piston rod 21 out through the diaphragm 25. When the user gets off the seat, the water bladder 22 is no longer compressed, the thrust on the piston rod 21 decreases, and it is pushed back to its original position under the action of the first spring 4.

[0076] Furthermore, the aforementioned power assembly 2 also includes a check valve 27, a connecting seat 2100, a connecting pipe 2200, and a sealing cap 2300. The connecting seat 2100 is disposed within the hydraulic valve body 23 and has two passages, each connecting to the input and output ends of the hydraulic valve body 23 respectively. The check valve 27 and the connecting pipe 2200 are respectively sealed within the two passages. The sealing cap 2300 seals the opening of the hydraulic valve body 23. The open-cap hydraulic valve body 23 facilitates the replacement of internal components such as the check valve 27, the connecting seat 2100, and the connecting pipe 2200. In addition, since the connecting pipe 2200 is disposed inside the hydraulic valve body 23, its cross-sectional area is necessarily smaller than that of the hydraulic valve body 23, meaning the flow rate of the connecting pipe 2200 is less than the flow rate of the hydraulic valve body 23. Because of the one-way valve 27, the water output from the water bladder 22, after passing through the one-way valve 27, can only flow back to the water bladder 22 via the connecting pipe 2200. This limits the reset speed of the piston rod 21, and thus limits the reset speed of the first slider 3. Therefore, the inner diameter of the connecting pipe 2200 determines the backflow rate of the power assembly 2, which controls the reset time of the first slider 3. Thus, by replacing the connecting pipe 2200 with a different inner diameter, the delay time of the delayed flushing can be controlled and adjusted. Replacing the connecting pipe 28 is also very convenient. Moreover, since the connecting pipe 2200 is located inside the hydraulic valve body 23 and connects the chamber on the output side of the one-way valve 27 with the chamber formed between the connecting seat 2100 and the sealing cover 2300, there is no risk of water leakage, resulting in a better user experience. A sealing plug 2400 is provided on one of the passages of the connecting seat 2100, and the connecting pipe 2200 is embedded in the sealing plug 2400. The tight fit of the sealing plug 2400 ensures installation stability and sealing performance.

[0077] refer to Figure 19 As shown, a fifth embodiment of the present invention is illustrated.

[0078] Most of the structural designs in the fifth embodiment are the same as those in the third embodiment. The difference is that the fifth embodiment shows that the mechanical flushing mechanism connected to the movable component 5 is the drain valve e, which is the same as the application scenario in the second embodiment. The output rod 511 of the movable component 5 acts on the pull rope d to drive the stop plug f of the drain valve e. The specific working method and principle are not described here.

[0079] refer to Figure 20 As shown, a sixth embodiment of the present invention is illustrated.

[0080] Most of the structural designs in the sixth embodiment are the same as those in the fourth embodiment. The difference is that the sixth embodiment shows that the mechanical flushing mechanism connected to the movable component 5 is the drain valve e, which is the same as the application scenario in the second and fifth embodiments. The output rod 511 of the movable component 5 acts on the pull rope d to drive the stop plug f of the drain valve e. The specific working method and principle are not described here.

[0081] In summary, the power component 2, the movable component 5, and the mechanical flushing mechanism designed in this invention have virtually no structural or functional interference with each other. Therefore, different technical means of the power component 2, the movable component 5, and the mechanical flushing mechanism can be selected and arranged in combination to obtain a variety of technical solutions.

[0082] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A mechanical delay device, characterized in that: It includes a housing, a power assembly, a first slider, a first spring, a movable assembly, and a second spring; The power component outputs power or returns to standby state when subjected to changes in external pressure. The first slider is slidably fitted inside the housing, and its two ends are respectively engaged with the output end of the power component and the first spring; The movable component and the first slider are slidably fitted together within the housing, and the opposing surfaces of the first slider and the movable component are provided with a first hook and a second hook; the second spring is disposed within the housing and acts on the movable component; When the power component outputs power, it pushes the first slider to move and compresses the first spring, causing the first spring to store energy. When the power component returns to standby mode, the first spring releases its stored energy and drives the first slider to reset. Then, the first hook engages the second hook to drive the movable component to slide and compress the second spring. At this time, the movable component acts as the power output mechanism of the mechanical delay device. When the second hook disengages from the first hook, it releases the stored energy of the second spring to push the movable component to reset.

2. The mechanical delay device as described in claim 1, characterized in that: The power assembly includes a piston rod, a water bladder, a hydraulic valve body, a piston seat, and a diaphragm; the piston rod is positioned opposite the end of the first slider; the water bladder is disposed on the bottom surface of the toilet seat; the hydraulic valve body is installed inside the housing, with its two ends communicating with the water bladder and the piston seat respectively; the diaphragm is disposed at the connection between the piston seat and the hydraulic valve body; the piston rod movably passes through the piston seat and abuts against the diaphragm.

3. The mechanical delay device as described in claim 2, characterized in that: The power assembly also includes a three-way adapter, a one-way valve, and a connecting pipe; the three-way adapter is connected between the hydraulic valve body and the water bladder; the one-way valve is disposed in the hydraulic valve body and is sealed to the inner wall of the hydraulic valve body; the two ends of the connecting pipe are respectively connected to the three-way adapter and the hydraulic valve body and communicate with both sides of the one-way valve; the cross-sectional area of ​​the connecting pipe is smaller than the cross-sectional area of ​​the hydraulic valve body.

4. The mechanical delay device as described in claim 2, characterized in that: The power assembly also includes a one-way valve, a connecting seat, a connecting pipe, and a sealing cap; the connecting seat is disposed in the hydraulic valve body and has two passages, each of which is connected to the input end and the output end of the hydraulic valve body respectively; the one-way valve and the connecting pipe are respectively sealed and installed in the two passages; the sealing cap is sealed and covers the opening of the hydraulic valve body.

5. The mechanical delay device as described in claim 1, characterized in that: The power assembly includes a button base, an exhaust nozzle, a button, and a pneumatic valve body. The button base is located on the bottom surface of the toilet seat and has an air chamber inside. The exhaust nozzle is located on the button base, and the button is dynamically sealed within the air chamber and blocks the exhaust nozzle when pressed. The pneumatic valve body is installed inside the housing and is connected to the air chamber and the exhaust nozzle via air pipes. The end of the first slider is dynamically sealed through the pneumatic valve body.

6. The mechanical delay device as described in claim 5, characterized in that: The seat body is provided with a movable seat, which dynamically seals with the inner wall of the air chamber. The button is movably inserted through the cover and detachably connected to the movable seat. The inner side of the movable seat is provided with a leather cup that dynamically seals with the inner wall of the air chamber. A fourth spring is provided between the leather cup and the seat body.

7. The mechanical delay device as described in claim 5, characterized in that: The first slider is fitted with several sealing rings on its circumference to achieve a dynamic seal between the end of the first slider and the inner wall of the pneumatic valve body; the power assembly also includes a one-way valve and a connector; the one-way valve is disposed in the pneumatic valve body and seals against the inner wall of the pneumatic valve body, and the connector is disposed in the outer shell and detachably connected to the pneumatic valve body; the air chamber, the exhaust nozzle, and the communication points with the pneumatic valve body are respectively located at the two ends of the one-way valve; a sealing gasket opposite to the exhaust nozzle is provided on the button seat.

8. The mechanical delay device as described in claim 1, characterized in that: The movable component includes a second slider that slides within the housing and a swing block that pivotally engages with the second slider; the second slider is provided with an output rod that outputs power; the second hook is provided on the opposite side of the swing block and the first slider; the two ends of the second spring abut against the inner wall of the housing and the swing block, respectively.

9. The mechanical delay device as described in claim 8, characterized in that: It is also provided with a pressure block and a third spring; the pressure block is slidably fitted inside the housing and is opposite to the end of the swing block away from the second slider, and the pressure block and the first slider are respectively located on both sides of the swing block; the third spring is disposed between the inner wall of the housing and the pressure block, so that the pressure block abuts against the end side of the swing block.

10. The mechanical delay device as described in claim 9, characterized in that: The side of the swing block opposite to the first slider, away from the second slider, is provided with a first inclined surface, and the inner wall of the outer shell is provided with a guide slope opposite to the first inclined surface; when the second slider and the swing block are driven by the first slider to compress the second spring, the first inclined surface contacts the guide slope and drives the swing block to swing, so that the second hook disengages from the first hook.

11. The mechanical delay device as described in claim 1, characterized in that: The movable component includes a second slider that slides within the housing, a swing block pivotally connected to the second slider, a hook, and a spring. The second slider is provided with an output rod for outputting power. The hook is movably connected to the opposite side of the swing block and the first slider, and is provided with a second hook that engages with the first hook. The spring is disposed within the swing block and is used to provide elastic force to reset the hook towards the direction of the first hook. The two ends of the second spring abut against the inner wall of the housing and the swing block, respectively.

12. The mechanical delay device as described in claim 11, characterized in that: The side of the swing block away from the second slider and facing away from the first slider has a second inclined surface. The inner wall of the outer shell has a first protrusion opposite to the second inclined surface. After the first protrusion abuts against the second inclined surface, the swing block is allowed to swing away from the first slider.

13. The mechanical delay device as described in claim 12, characterized in that: The side of the swing block facing the first slider and away from the second slider has a third inclined surface. The inner wall of the outer shell has a second protrusion opposite to the third inclined surface. After the second protrusion abuts against the third inclined surface, it drives the swing block to swing away from the first slider.

14. The mechanical delay device as described in any one of claims 1 to 13, characterized in that: The movable component is connected to the mechanical flushing mechanism of the toilet. When the movable component is pushed by the first slider, it outputs power to activate the mechanical flushing mechanism of the toilet.

15. The mechanical delay device as described in claim 14, characterized in that: The mechanical flushing mechanism is a pilot valve. The output rod of the movable component acts on the sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod retracts, the sealing diaphragm is in the open state; when the output rod extends, the sealing diaphragm is in the closed state.

16. The mechanical delay device as described in claim 14, characterized in that: The mechanical flushing mechanism includes a pull rope and a drain valve, with the two ends of the pull rope connected to the movable component and the stop plug of the drain valve, respectively.

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