Flushing nozzle with stroke feedback and application method thereof

Abstract

The invention relates to a flushing nozzle with stroke feedback and an application method thereof.The flushing nozzle comprises a nozzle body, the nozzle body is connected with a main machine body, a nozzle body is arranged in the nozzle body, a water outlet is formed in the upper end of the nozzle body, a first silica gel ring is arranged on the outer ring of the water outlet, and the bottom of the first silica gel ring is connected with a main sleeve arranged on the outer side of the nozzle body; a spring is arranged in the main sleeve, and the nozzle body is provided with a first metal contact, a first contact, a second metal contact and a second contact during injection molding of the inner part of the main sleeve; the first metal contact and the first contact are in a conducting relation, the second metal contact and the second contact are in a conducting relation, and the spring is connected to a water pressure automatic adjusting circuit in the host body. The spring assembly is extruded through the front-back stroke change of the first silica gel ring, so that the impedance between the metal contacts is increased, and the effect of changing the water outlet pressure is achieved in combination with the water pressure automatic adjusting circuit in the host body.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment, and in particular relates to a flushing nozzle with stroke feedback and an application method thereof. Background Art

[0002] As daily teeth and nasal cleaning tools, water irrigators and nasal washers are becoming more and more popular. For example, when using water irrigators in daily life, the tolerance and sensitivity of different parts are different, so the water pressure also needs to be adjusted. For example, when deep cleaning the gaps between teeth, people are often accustomed to directly pressing the nozzle against the gaps between teeth to obtain greater water pressure and better cleaning effects. Currently, most of the gears on the market are fixed or multiple gears are fixed, and it is troublesome to switch back and forth. Moreover, excessive water pressure and long-term flushing may cause discomfort or damage to the flushing area.

[0003] In summary, the prior art has the problems of frequent gear shifting caused by the fixed gear position of the main engine and damage to the flushing part caused by long-term excessive water pressure flushing. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of the present invention to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] Therefore, the purpose of the present invention is to provide a flushing nozzle with stroke feedback and its application method, which can solve the problems of frequent gear shifting caused by the fixed gear of the host and the damage to the flushing part caused by long-term excessive water pressure flushing in the prior art. The present invention provides a flushing nozzle with stroke feedback and its application method, which comprises a nozzle, the nozzle is connected to the host body, the inside of the nozzle is a nozzle body, the upper end of the nozzle body is a water outlet, the first silicone ring is on the outer circle of the water outlet, the bottom of the first silicone ring is connected to the main sleeve, the main sleeve is arranged on the outside of the nozzle body, a spring is arranged in the main sleeve, and the nozzle body is provided with a first metal contact and a first contact, a second metal contact and a second contact when the internal part of the main sleeve is injection molded, the first metal contact and the first contact are in a conductive relationship, the second metal contact and the second contact are in a conductive relationship, and the spring is connected to the water pressure automatic adjustment circuit inside the host body.

[0006] Optionally, the first metal contact, the second metal contact, and the spring form a variable resistor R1, and the variable resistor R1 establishes an electrical connection with a contact at a host interface through the first contact and the second contact.

[0007] Optionally, the bottom of the first silicone ring is connected to the limiting structure at the top of the sleeve, the second silicone ring is located in the lower half of the main sleeve, and the upper part of the second silicone ring is the limiting structure at the bottom of the sleeve.

[0008] Optionally, a sleeve base is provided below the second silicone ring, and an inner ring of the sleeve base is provided with an external thread adapted to the surface of the nozzle body.

[0009] Optionally, interference fitting is adopted between the first silicone ring, the second silicone ring, the nozzle body and the main sleeve.

[0010] Optionally, the sleeve base and the main sleeve are welded by ultrasonic welding.

[0011] Optionally, the automatic water pressure regulating circuit includes a single-chip microcomputer MCU, the variable resistor R1, and a resistor R2. The variable resistor R1 and the resistor R2 are connected in series between VCC and GND. The single-chip microcomputer MCU is connected to the motor driving switch tube through PWM and to the line where the resistor is located through an AD port. The vibration motor module and the buzzer module are also connected to the single-chip microcomputer MCU.

[0012] Optionally, the application method is as follows: step 1: turn on the host, and aim the nozzle at the part to be cleaned for flushing; step 2: if you feel that the water pressure is too low, place the front end of the nozzle against the part that needs deep cleaning; step 3: gently squeeze the silicone at the front end of the nozzle to partially retract it into the sleeve; step 4: the host automatically increases the motor drive voltage according to the compression stroke to obtain a higher water pressure; step 5: when the motor drive duty cycle reaches the set prompt value, the host will vibrate and beep to remind the user not to flush with high water pressure for a long time; step 6: end flushing of this part and move to other parts; step 7: due to the reset effect of the spring in the nozzle, the water pressure returns to the initial setting value; step 8: repeat the above actions to achieve the cleaning purpose.

[0013] In summary, the present invention includes at least one of the following beneficial effects: The present invention adopts the assembly of the nozzle and the main sleeve components and the signal collection. Here, the change of resistance value is collected, that is, the change of the first silicone ring extrusion spring makes the number of coil turns (spring turns) between the first metal contact and the first contact increase, and then the resistance value of the access circuit increases. Of course, it can also be impedance, and then the resistance value of the access circuit is changed by detecting the change of the front and rear stroke of the silicone ring at the nozzle, thereby changing the water outlet pressure. When the silicone ring stroke is greater than the set value, a buzzer and vibration prompt are issued, which solves the problem of automatically adjusting the water pressure and avoiding damage to the flushing part caused by high water pressure flushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A nozzle cross-sectional view of a flushing nozzle with stroke feedback according to the present invention; Figure 2 A schematic diagram of a main machine of a flushing nozzle with stroke feedback according to the present invention; Figure 3 A block diagram of a water pressure automatic regulation circuit for a flushing nozzle with stroke feedback of the present invention; List of illustration symbols: 1. Nozzle; 101. Water outlet; 102. First silicone ring; 103. Limiting structure at the top of the sleeve; 104. Spring; 105. Main sleeve; 106. First metal contact; 107. Second metal contact; 108. Limiting structure at the bottom of the sleeve; 109. Second silicone ring; 110. Sleeve base; 111. External thread; 112. Nozzle body; 113. First contact; 114. Second contact; 2. Host body. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-3 The present invention is described in further detail.

[0017] Embodiment 1, refer to Figure 1-3In order to solve the problems of frequent gear shifting and switching troubles caused by the fixed gear position of the host in the prior art and the damage to the flushing part caused by long-term excessive water pressure flushing, the present embodiment discloses a flushing nozzle with stroke feedback and its application method, including a nozzle 1, the nozzle 1 is connected to a host body 2, the nozzle 1 is inside a nozzle body 112, the upper end of the nozzle body 112 is a water outlet 11, the first silicone ring 12 is outside the water outlet 11, the bottom of the first silicone ring 12 is connected to the main sleeve 15, the main sleeve 15 is arranged on the outside of the nozzle body 112, the main sleeve 15 is provided with a spring 14, the nozzle body 112 is provided with a first metal contact 16 and a first contact 113, a second metal contact 17 and a second contact 114 when the nozzle body 112 is partially injected inside the main sleeve 15, the first metal contact 16 and the first contact 113 are in a conductive relationship, the second metal contact 17 and the second contact 114 are in a conductive relationship, and the spring 14 is connected to the water pressure automatic adjustment circuit inside the host body 2. The first metal contact 16, the second metal contact 17, and the spring 14 form a variable resistor R1, and the variable resistor R1 establishes an electrical connection with the contacts at the host interface through the first contact 113 and the second contact 114. The first metal contact 16 and the second metal contact 17 are respectively located on both sides of the nozzle body 112, and the first metal contact 16 is above the second metal contact 17, and the bottom end of the spring 14 is flush with the second metal contact 17.

[0018] The bottom of the first silicone ring 12 is connected to the sleeve top limit structure 13, the second silicone ring 19 is located in the lower half of the main sleeve 15, and the upper part of the second silicone ring 19 is the sleeve bottom limit structure 18. The lower part of the second silicone ring 19 is the sleeve base 110, and the inner ring of the sleeve base 110 is provided with an external thread 111 adapted to the surface of the nozzle body 112. Interference fitting is adopted between the first silicone ring 12, the second silicone ring 19, the nozzle body 112 and the main sleeve 15. Ultrasonic welding is adopted for the sleeve base 110 and the main sleeve 15. The water pressure automatic regulating circuit includes a single-chip microcomputer MCU, a variable resistor R1, and a resistor R2. The variable resistor R1 and the resistor R2 are connected in series between VCC and GND. The single-chip microcomputer MCU is connected to the motor drive switch tube through PWM and is connected to the line where the resistor is located through the AD port. The vibration motor module and the buzzer module are also connected to the single-chip microcomputer MCU.

[0019] The application method is: Step 1: Turn on the host, and aim the nozzle at the part to be cleaned for flushing; Step 2: If you feel that the water pressure is too low, put the front end of the nozzle against the part that needs deep cleaning; Step 3: Gently squeeze the silicone at the front end of the nozzle to partially retract it into the sleeve; Step 4: The host automatically increases the motor drive voltage according to the compression stroke to obtain higher water pressure; Step 5: When the motor drive duty cycle reaches the set prompt value, the host will vibrate and beep to remind the user not to flush with high water pressure for a long time; Step 6: End the flushing of this part and move to other parts; Step 7: Due to the reset effect of the spring in the nozzle, the water pressure returns to the initial setting value; Step 8: Repeat the above actions to achieve the cleaning purpose.

[0020] Specific implementation principle: When using the present invention, first insert the first silicone ring 12 from the bottom of the main sleeve 15, then install the spring 14, then install the second silicone ring 19, and finally cover the sleeve base 110. The first silicone ring 12, the second silicone ring 19, the nozzle body 112 and the main sleeve 15 are all fitted with interference fit, which can play a sealing role. The sleeve base 110 and the main sleeve 15 are ultrasonically welded. After the overall assembly is completed, the nozzle body 112 is inserted from the nozzle outlet 11, and fixed by the internal thread of the sleeve base 110 and the thread on the nozzle body 112. Two sets of mutually conductive metal contacts, the first metal contact 16 and the first contact 113, the second metal contact 17 and the second contact 114, are pre-embedded during the injection molding of the nozzle body 112. The second metal contact 17 and the first metal contact 16 are located in the upper section of the nozzle for contacting the internal spring 14. The first contact 113 and the second contact 114 are located at the bottom of the nozzle and are used to establish an electrical connection with the contacts at the host interface.

[0021] Squeezing the first silicone ring 12 will cause the spring 14 to deform. The single-chip computer collects the resistance between the first contact 113 and the second contact 114. When the spring 14 is compressed, the total length of the spring 14 between the two points increases, and the resistance between the two points will also increase. In this way, the movement of the first silicone ring 12 before and after the nozzle body 112 can be known through the change in resistance. The motor inside the whole machine is driven by PWM, and the duty cycle of PWM increases as the stroke of the first silicone ring 12 increases, thereby achieving increased water pressure. When the stroke of the first silicone ring 12 reaches the set safety value, a prompt is given. The prompt method can be vibration or buzzing. The purpose of the prompt is to inform the user that the current water pressure is high and long-term flushing may cause damage to the flushing area.

[0022] Regarding the automatic water pressure adjustment circuit inside the host body, the implementation principle is: the resistance between the first contact 113 and the second contact 114 is equivalent to the variable resistor R1. R1 and R2 are connected in series and connected between VCC and GND. The AD port of the single-chip microcomputer collects the voltage Vad after the voltage is divided by R1 and R2, that is, VCC*R1 / (R1+R2). It can be seen from the formula that when R1 becomes larger, the voltage collected by the AD port will also become larger. In this way, the change in the nozzle stroke is eventually converted into a change in the voltage at the AD collection port. Another pin of the single-chip microcomputer controls the drive tube of the motor through PWM. At the factory, the AD port voltage Vad1 when the nozzle is not compressed and the AD port voltage Vad2 when the nozzle is fully compressed are calibrated, so that the formula for the PWM duty cycle can be obtained: 50%+[(Vad-Vad1) / (Vad2-Vad1)]*50% This is an algorithm formula with an initial duty cycle of 50%. Of course, this initial duty cycle can be defined by yourself. When the nozzle is fully compressed, the duty cycle is 100%. The PWM duty cycle threshold that needs to be warned has been pre-written in the MCU program. When the nozzle is compressed to a certain stroke, the value obtained by the PWM algorithm formula exceeds this threshold, and the MCU will control the vibration motor and buzzer to work. This can achieve the purpose of automatically adjusting the water pressure and realize the warning prompt function.

[0023] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made according to the structure, shape, principle, and method of the present invention should be included in the protection scope of the present invention.

Claims

1. A flushing nozzle with stroke feedback, characterized in that: The invention comprises a nozzle (1), wherein the nozzle (1) is connected to a main body (2), the nozzle (1) is provided with a nozzle body (112) inside, the upper end of the nozzle body (112) is a water outlet (11), the first silicone ring (12) is arranged outside the water outlet (11), the bottom of the first silicone ring (12) is connected to a main sleeve (15), the main sleeve (15) is arranged outside the nozzle body (112), a spring (14) is arranged inside the main sleeve (15), and the nozzle body (112) is provided with a first metal contact (16) and a first contact (113), a second metal contact (17) and a second contact (114) when the internal part of the main sleeve (15) is injection-molded, the first metal contact (16) and the first contact (113) are in a conducting relationship, the second metal contact (17) and the second contact (114) are in a conducting relationship, and the spring (14) is connected to a water pressure automatic regulating circuit inside the main body (2).

2. A flushing nozzle with stroke feedback according to claim 1, characterized in that: The first metal contact (16), the second metal contact (17) and the spring (14) form a variable resistor R1, and the variable resistor R1 establishes an electrical connection with the contacts at the host interface through the first contact (113) and the second contact (114).

3. A flushing nozzle with stroke feedback according to claim 1, characterized in that: The bottom of the first silicone ring (12) is connected to the sleeve top limit structure (13), the second silicone ring (19) is located in the lower half of the main sleeve (15), and the sleeve bottom limit structure (18) is located above the second silicone ring (19).

4. A flushing nozzle with stroke feedback according to claim 3, characterized in that: Below the second silicone ring (19) is a sleeve base (110), and the inner ring of the sleeve base (110) is provided with an external thread (111) adapted to the surface of the nozzle body (112).

5. A flushing nozzle with stroke feedback according to claim 3, characterized in that: Interference fitting is adopted between the first silicone ring (12), the second silicone ring (19), the nozzle body (112) and the main sleeve (15).

6. A flushing nozzle with stroke feedback according to claim 4, characterized in that: The sleeve base (110) and the main sleeve (15) are welded by ultrasonic welding.

7. A flushing nozzle with stroke feedback according to claim 2, characterized in that: The water pressure automatic regulating circuit includes a single-chip microcomputer MCU, the variable resistor R1, and the resistor R2. The variable resistor R1 and the resistor R2 are connected in series between VCC and GND. The single-chip microcomputer MCU is connected to the motor driving switch tube through PWM and is connected to the line where the resistor is located through the AD port. The vibration motor module and the buzzer module are also connected to the single-chip microcomputer MCU.

8. An application method for a flushing nozzle with stroke feedback, characterized in that: The following steps are described: Step 1: Turn on the main unit and aim the nozzle at the part to be cleaned; Step 2: If you feel the water pressure is too low, place the front end of the nozzle against the area that needs deep cleaning; Step 3: Gently squeeze the silicone at the front of the nozzle to partially retract it into the sleeve; Step 4: The host automatically increases the motor drive voltage according to the compression stroke to obtain higher water pressure; Step 5: When the motor's driving duty cycle reaches the set reminder value, the host will vibrate and beep to remind the user not to flush with high water pressure for a long time; Step 6: Finish flushing this part and move to other parts; Step 7: Due to the reset action of the spring in the nozzle, the water pressure returns to the initial setting value; Step 8: Repeat the above steps to achieve the cleaning purpose.

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