A foam output method

Abstract

The present invention provides a foam output method, including a first output mode and a second output mode; in the first output mode, a first trigger signal generated by a first trigger device is received, and based on the first trigger signal, a foam generating device is controlled to deliver foam to a nozzle, and the foam is outputted through the first channel and the second channel of the nozzle; in the second output mode, a second trigger signal generated by a second trigger device is received, and based on the second trigger signal, the foam generating device is controlled to deliver foam to the nozzle, and the foam is outputted through the first channel of the nozzle; the second trigger signal is generated when the second trigger device is triggered to block the second channel when the nozzle is operated. Advantages of the present invention: Specifically, in the first output mode and the second output mode, the user can actually control the foam output in different ways as needed, thereby being able to well meet the use requirements of various occasions.

Description

[Technical field]

[0001] The invention relates to the technical field of foam machine products, and in particular to a foam output method. [Background technology]

[0002] In daily life, people habitually use some washing products or skin care products, such as hand sanitizer when washing hands, shampoo when washing hair, and sunscreen when going out in summer. Washing products or skin care products are stored in bottles purchased with the purchase. When using them, they usually either open the lid to get the liquid or squeeze out the liquid by pressing the pump head. However, no matter whether it is obtained by opening the lid or pressing the pump head, it needs to be repeatedly kneaded into foam afterwards.

[0003] In recent years, with the improvement of people's quality of life, higher requirements have been put forward for the liquid dispensing methods of hand soap, detergent, shampoo and other products, and foam machines have also emerged. The foam machine uses an electric foam pump to pump liquid and gas into the gas-liquid mixing chamber for mixing, and can directly spray washing products or skin care products in the form of foam, so that there is no need to rub repeatedly when using.

[0004] In the prior art, foam machines all output foam by either sensor induction or pressing a button switch. For example, a hand-washing foam machine disclosed in the Chinese utility model patent with application number CN202021151464.X includes a bottle body, a shell, an electric foam pump, a control circuit unit, a battery, an output tube, a liquid extraction tube, and a sensor. The hand-washing foam machine can control the operation of the electric foam pump through the sensor's sensing of the user's hand, extract hand sanitizer from the bottle body, and spray hand sanitizer foam through the output tube. Another example is a hand sanitizer machine with two liquid outlets disclosed in the Chinese utility model patent with application number 202023093911.3. The hand sanitizer machine is designed with two liquid storage bottles, two pump bodies, and two button switches, so that two liquid outlet states can be achieved by pressing the button switch. However, in actual use, in some occasions, users want to output foam by induction, such as when washing hands; in other occasions, users want to output foam by pressing, such as when washing doors and windows; but the existing foam machines either output foam by induction or by pressing a button switch, which cannot meet the needs of use in various occasions. In view of the above problems, the inventor of this case conducted in-depth research on this problem, and thus this case was created. [Summary of the invention]

[0005] The technical problem to be solved by the present invention is to provide a foam output method to solve the problem that the existing foam machines either output foam by induction by a sensor or by pressing a button switch, which cannot meet the needs of use in various occasions.

[0006] The present invention is implemented as follows: a foam output method, the method comprising a first output mode and a second output mode;

[0007] In the first output mode, a first trigger signal generated by a first trigger device is received, and based on the first trigger signal, a foam generating device is controlled to deliver foam to the nozzle, and the foam is outputted through the first channel and the second channel of the nozzle;

[0008] In the second output mode, a second trigger signal generated by a second trigger device is received, and based on the second trigger signal, the foam generating device is controlled to deliver foam to the nozzle, and the foam is output through the first channel of the nozzle; the second trigger signal is generated by triggering the second trigger device when the nozzle is operated to block the second channel.

[0009] Furthermore, the channel cross-sectional area of ​​the first channel is smaller than the channel cross-sectional area of ​​the second channel; in the first output mode, the foam is output through the first channel and the second channel in a flowing manner; in the second output mode, the foam is output through the first channel in a jetting manner.

[0010] Furthermore, a push rod is provided at the bottom of the nozzle, and the input end of the first channel is located at the bottom of the push rod; a movable component is provided below the push rod, and the second trigger device is provided below the movable component;

[0011] When the nozzle is pressed, the bottom surface of the push rod is in contact with the top surface of the movable component to block the second channel. At the same time, the push rod pushes the movable component to move, so that the movable component pushes the second trigger device to generate a second trigger signal. When the nozzle is released, the movable component resets upward and disengages from the second trigger device, and the nozzle resets upward and disengages from the movable component.

[0012] Furthermore, a liquid outlet is provided on the outer wall of the nozzle, the output ends of the first channel and the second channel are both connected to the liquid outlet, and the channel cross-section of the output end of the first channel is circular.

[0013] Furthermore, the method also includes: during the process of outputting foam through the first channel of the nozzle, if a first trigger signal generated by a first trigger device is received, controlling the first trigger device to enter a shielding state, in which the first trigger signal loses control over the foam generating device.

[0014] Furthermore, the method also includes: receiving a third trigger signal generated by the first trigger device, and controlling the first trigger device to exit the shielding state based on the third trigger signal; the conditions for generating the first trigger signal and the third trigger signal are different.

[0015] Furthermore, the first trigger device is an induction switch.

[0016] Furthermore, the second trigger device is a push button switch.

[0017] By adopting the technical solution of the present invention, at least the following beneficial effects are achieved:

[0018] 1. Specifically, there are a first output mode and a second output mode. In the first output mode, the foam is outputted through the first channel and the second channel of the nozzle together. The foam has a gentle flow rate and flows downward after being outputted, which is suitable for use in hand washing, face washing and other occasions. In the second output mode, the foam is outputted through the first channel of the nozzle alone. The foam has a fast flow rate and sprays forward when being outputted, which is suitable for use in cleaning doors and windows, spraying hairspray and other occasions. Therefore, the user can control the foam to be outputted in different ways according to actual needs, thereby being able to well meet the use needs of various occasions.

[0019] 2. In the second output mode, it is cleverly designed that when the nozzle is operated to trigger the second trigger device to generate the second trigger signal, the second channel can be blocked at the same time, so that in specific use, not only can a foam generating device be shared to achieve the foam output of the first output mode and the second output mode, but there is no need to set up an additional switching structure for channel switching, and there is no need to switch channels in advance between the two output modes. The output mode switching can be completed at the same time when the nozzle trigger signal is pressed; therefore, the overall structure of the foam machine can be greatly simplified, making the overall structure of the foam machine more compact, and can reduce the overall cost of the foam machine, improve market competitiveness, and it is also very convenient to operate and use.

[0020] 3. When the foam is output through the first channel of the nozzle, if the first trigger device generates a first trigger signal, the first trigger device is controlled to enter a shielding state, so that the first trigger signal loses control over the foam generating device, thereby avoiding the first trigger device from being triggered by mistake.

Brief Description of the Drawings

[0021] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0022] Figure 1 It is a flowchart of the execution of a foam output method of the present invention;

[0023] Figure 2 It is the overall structure diagram of the foam machine of the present invention;

[0024] Figure 3 is an exploded view of the foam machine of the present invention;

[0025] Figure 4is a cross-sectional view of the foam machine of the present invention;

[0026] Figure 5 is an exploded view of the nozzle and the housing in the present invention;

[0027] Figure 6 is a cross-sectional view of the nozzle, housing and movable components after assembly in the present invention;

[0028] Figure 7 It is the overall structural diagram of the active components in the present invention;

[0029] Figure 8 is an exploded view of the active components of the present invention;

[0030] Fig. 9 It is a bottom structural diagram of the rotary cover in the present invention;

[0031] Fig.10 It is a structural diagram of the nozzle in the present invention;

[0032] Fig.11 It is a bottom structural diagram of the nozzle in the present invention;

[0033] Fig.12 It is a top structural diagram of the base in the present invention;

[0034] Fig.13 It is a bottom structural diagram of the base in the present invention.

[0035] Description of reference numerals:

[0036] A first trigger device 1;

[0037] A foam generating device 2, a liquid inlet pipe 21, and an air inlet pipe 22;

[0038] Spray head 3, first channel 31, second channel 32, liquid outlet 33, push rod 34, guide slider 341, movable column 35, mounting portion 36, limiting piece 361, blocking piece 362, annular groove 363;

[0039] A second trigger device 4;

[0040] Movable assembly 5, trigger part 51, piston body 52, sealing ring 53, sealing sheet 54, guide ring 55, guide groove 551, guide groove 552;

[0041] Shell 6, extension port 61, liquid chamber 62, piston assembly chamber 621, bearing step 622, guide ring supporting step 623, rotary cover 63, movable channel 631, rotating groove 632, sliding opening 633, base 64, rotating slider 641, sealing cover 65, sleeve hole 651, fitting sheet 652, flat pad 66;

[0042] Housing 7, threaded connection port 71;

[0043] Bottle 8;

[0044] Control main board 9. [Specific implementation method]

[0045] In order to better understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] It should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. In addition, the terms "first", "second", etc., etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0047] Because the existing foam machine, when used, either outputs foam by induction by a sensor or by pressing a button switch, it cannot meet the use requirements of various occasions. To this end, in the technical solution of the embodiment of the present invention, a new foam output method is provided, which can control the foam to be output in different ways according to the needs of the user, so as to meet the use requirements of various occasions. The overall idea is as follows: when receiving the first trigger signal generated by the first trigger device 1, the foam generating device 2 is controlled to generate foam and output it through the first channel 31 and the second channel 32. Since the first channel 31 and the second channel 32 output foam together, the foam flow rate is slow, so the foam will flow downward when it is output, which is suitable for use in occasions such as washing hands and washing faces; and when the second trigger device 4 is triggered by the operating nozzle 3 to generate the second trigger signal, the second channel 32 can be blocked, and the foam generating device 2 is controlled to generate foam and output it through the first channel 31. Since only the first channel 31 outputs foam, the foam flow rate is fast, so the foam will spray forward when it is output, which is suitable for use in occasions such as cleaning doors and windows and spraying hairspray.

[0048] See also Figures 1 to 13 As shown, a preferred embodiment of a foam output method of the present invention is used to control a foam machine to achieve foam output, and the method includes a first output mode and a second output mode;

[0049] In the first output mode, a first trigger signal generated by the first trigger device 1 is received, and based on the first trigger signal, the foam generating device 2 is controlled to deliver foam to the nozzle 3, and the foam is outputted through the first channel 31 and the second channel 32 of the nozzle 3;

[0050] In the second output mode, a second trigger signal generated by the second trigger device 4 is received, and based on the second trigger signal, the foam generating device 2 is controlled to deliver foam to the nozzle 3, and the foam is output through the first channel 31 of the nozzle; the second trigger signal is triggered by the second trigger device 4 when the operating nozzle 3 blocks the second channel 32, that is, when the operating nozzle 3 triggers the second trigger device 4 to generate the second trigger signal, the second channel 32 can be blocked at the same time, so that the foam generated by the foam generating device 2 is only output through the first channel 31.

[0051] By adopting the above technical solution of the present invention, at least the following beneficial effects are achieved:

[0052] 1. Specifically, there are a first output mode and a second output mode. In the first output mode, the foam is outputted through the first channel 31 and the second channel 32 of the nozzle 3. The foam has a gentle flow rate and flows downward after being outputted, which is suitable for use in occasions such as washing hands and face. In the second output mode, the foam is outputted through the first channel 31 of the nozzle 3 alone. The foam has a fast flow rate and is ejected forward when being outputted, which is suitable for use in occasions such as cleaning doors and windows and spraying hairspray. Therefore, the user can control the foam to be outputted in different ways according to actual needs, thereby being able to well meet the use requirements of various occasions.

[0053] 2. In the second output mode, it is cleverly designed that when the nozzle 3 is operated to trigger the second trigger device 4 to generate the second trigger signal, the second channel 32 can be blocked at the same time, so that in actual use, not only can the same foam generating device 2 be used to realize the foam output of the first output mode and the second output mode, but there is no need to set up an additional switching structure for channel switching, and there is no need to switch channels in advance between the two output modes. The output mode switching can be completed at the same time when the nozzle 3 trigger signal is pressed; therefore, the overall structure of the foam machine can be greatly simplified, making the overall structure of the foam machine more compact, and can reduce the overall cost of the foam machine, improve market competitiveness, and it is also very convenient to operate and use.

[0054] In a preferred embodiment of the present invention, the first trigger device 1 is an induction switch, specifically an infrared induction switch; in the first output mode, the user brings the hand close to the first trigger device 1, causing the first trigger device 1 to generate a first trigger signal.

[0055] In a preferred embodiment of the present invention, the second trigger device 4 is a key switch. In the second output mode, the user presses the nozzle 3 to trigger the second trigger device 4 to generate a second trigger signal.

[0056] In a preferred embodiment of the present invention, the channel cross-sectional area of ​​the first channel 31 is smaller than the channel cross-sectional area of ​​the second channel 32; in the first output mode, the foam is output through the first channel 31 and the second channel 32 in a flowing manner; in the second output mode, the foam is output through the first channel 31 in a jetting manner. Since the smaller the channel cross-sectional area, the faster the flow rate, and the larger the channel cross-sectional area, the slower the flow rate; therefore, by designing the channel cross-sectional area of ​​the first channel 31 to be smaller than the channel cross-sectional area of ​​the second channel 32, in the second output mode, the foam flow rate is fast and the foam can be output in a forward jetting manner, while in the first output mode, the foam is output through the first channel 31 and the second channel 32 in a slow flow rate, so the foam will flow downward when output.

[0057] In a preferred embodiment of the present invention, a liquid outlet 33 is provided on the outer wall of the nozzle 3, and the output ends of the first channel 31 and the second channel 32 are both connected to the liquid outlet 33, so that no matter in the first output mode or the second output mode, the foam can only be output through one liquid outlet 33, thereby ensuring that the user can accurately spray the foam to the desired position. The channel cross section of the output end of the first channel 31 is circular, so that the foam can be better sprayed forward in the second output mode.

[0058] In a preferred embodiment of the present invention, a push rod 34 is provided at the bottom of the nozzle 3, and the input end of the first channel 31 is located at the bottom of the push rod 34; a movable component 5 is provided below the push rod 34, and the second trigger device 4 is provided below the movable component 5;

[0059] When the nozzle 3 is pressed, the bottom surface of the push rod 34 is in contact with the top surface of the movable component 5 to block the second channel 32. At this time, the foam cannot be output through the second channel 32. At the same time, the push rod 34 pushes the movable component 5 to move, so that the movable component 5 pushes the second trigger device 4 to generate a second trigger signal; when the nozzle 3 is released, the movable component 5 resets upward and breaks contact with the second trigger device 4. At this time, the foam can be output through the second channel 32, and the nozzle 3 resets upward and breaks contact with the movable component 5.

[0060] For more details, please refer to Figure 2-4As shown, the foam machine also includes a shell 6, a casing 7, a bottle body 8 and a control mainboard 9, the first trigger device 1, the second trigger device 4 and the foam generating device 2 are all electrically connected to the control mainboard 9, the first trigger device 1 is arranged on the outer wall of the casing 7; the foam generating device 2 and the control mainboard 9 are both installed inside the casing 7, the casing 6 is sealed and fixedly connected to the upper end of the casing 7, that is, the casing 6 serves as the upper cover of the casing 7, and the upper end of the casing 7 is sealed by the casing 6 to achieve a waterproof effect; the control mainboard 9 is fixedly arranged in the casing 7 at a position adjacent to the casing 6, the second trigger device 4 is fixedly installed on the control mainboard 9, the movable component 5 is movably arranged in the casing 6, the spray head 3 is movably arranged on the casing 6, the casing 6 is provided with a protruding port 61, and the movable component 5 has a triggering portion 51 extending out of the casing 6 through the protruding port 61, the triggering portion 51 is arranged corresponding to the second triggering device 4, so that when the spray head 3 is pressed to drive the movable component 5 to move, the triggering portion 51 of the movable component 5 can be connected with the second triggering device 4. The housing 6 is provided with a liquid passing chamber 62, the output end of the foam generating device 2 is connected to the liquid passing chamber 62, the first channel 31 and the second channel 32 are both connected to the liquid passing chamber 62, so that the foam generated by the foam generating device 2 can be transported to the liquid passing chamber 62 and output through the first channel 31 and the second channel 32; the lower end of the housing 7 is provided with a threaded connection port 71, the bottle body 8 is threadedly connected to the threaded connection port 71, the foam generating device 2 has a liquid inlet pipe 21 inserted into the bottle body 8 and an air inlet pipe 22 connected to the external atmosphere, so that the foam generating device 2 can suck the liquid in the bottle body 8 through the liquid inlet pipe 21 and suck the external air through the air inlet pipe 22 when working, and mix the liquid and the air to generate foam; the foam generating device 2 adopts an electric foam pump, which has been widely used in the prior art, and its specific structure is well known to those skilled in the art, and the specific structure of the electric foam pump will not be described in detail here.

[0061] As a specific implementation of the active component 5 of the present invention, please refer to Figure 7-8 As shown, the active component 5 includes:

[0062] A piston body 52, the lower end of the piston body 52 serving as the triggering portion 51;

[0063] The sealing ring 53 is provided at the bottom of the liquid passage chamber 62, and the piston assembly chamber 621 is communicated with the extension port 61, so that the trigger part 51 can extend out of the housing 6 through the extension port 61; a bearing step 622 is formed in the piston assembly chamber 621, and the sealing ring 53 is arranged on the bearing step 622; the piston body 52 is arranged above the sealing ring 53, and the trigger part 51 of the piston body 52 passes through the sealing ring 53 and extends to the extension port 61; wherein, the bearing step 622 can It can support the entire movable assembly 5, ensuring that the movable assembly 5 will not fall from the extension port 61 when the push rod 34 pushes the movable assembly 5 to move; the sealing ring 53 can be a rubber sealing ring, the inner wall of the sealing ring 53 is tightly fitted with the trigger part 51, and the outer wall of the sealing ring 53 is tightly fitted with the cavity wall of the piston assembly cavity 621, so that after the movable assembly 5 is installed in the piston assembly cavity 621, the sealing ring 53 can play a good sealing role, and the foam used will not seep out from the extension port 61;

[0064] A sealing sheet 54, which is arranged on the top of the piston body 52; the sealing sheet 54 can seal and block the second channel 32 when the push rod 34 contacts the sealing sheet 54. At the same time, in the specific implementation of the present invention, the sealing sheet 54 can be a rubber sealing sheet, and the outer edge of the sealing sheet 54 is in close contact with the cavity wall of the piston assembly cavity 621, so that the sealing sheet 54 can also seal the gap between the piston body 52 and the piston assembly cavity 621, thereby further preventing foam from seeping out from the extension port 61;

[0065] The guide ring 55 is arranged at the upper end of the piston assembly chamber 621. Specifically, the guide ring 55 and the upper end of the piston assembly chamber 621 are tightly assembled and connected, so that the guide ring 55 will not be separated, and the guide ring 55 is located above the sealing plate 54; the guide ring 55 can limit the piston body 52, the sealing ring 53 and the sealing plate 54 installed in the piston assembly chamber 621, so that the piston body 52, the sealing ring 53 and the sealing plate 54 will not be separated from the piston assembly chamber 621. At the same time, the guide ring 55 can also limit the upward stroke of the sealing plate 54 to ensure that the push rod 34 can be separated from the sealing plate 54 after the nozzle 3 rebounds upward; in the specific implementation of the present invention, a guide ring support step 623 is formed on the inner wall of the upper end of the piston assembly chamber 621, and the guide ring 55 is supported on the guide ring support step 623. A gap can be reserved between the lower end of the guide ring 55 and the sealing plate 54, so that the piston body 52 can move up and down better.

[0066] When the movable component 5 is working, when the nozzle 3 is pressed to make the push rod 34 push the piston body 52 to move downward, the trigger part 51 of the piston body 52 can be extended from the extension port 61 and press the second trigger device 4 downward, so that the second trigger device 4 can trigger the foam generating device 2 to work, and at the same time, the piston body 52 can press the sealing ring 53 downward to deform the sealing ring 53; when the nozzle 3 is released, the piston body 52 can automatically float upward to return to its original position under the elastic force of the second trigger device 4 and the sealing ring 53, so that the piston body 52 is separated from the second trigger device 4.

[0067] Preferably, the inner wall of the guide ring 55 is provided with a guide groove 551, and the top end of the push rod 34 is located in the guide ring 55. The present invention can ensure that each time the nozzle 3 is pressed, the nozzle 3 can drive the push rod 34 to accurately push the movable component 5 by extending the top end of the push rod 34 into the guide ring 55; at the same time, because the inner wall of the guide ring 55 is provided with a guide groove 551, the foam delivered to the liquid chamber 62 can enter the upper part of the sealing sheet 54 through the guide groove 551, so that when the push rod 34 is not in contact with the sealing sheet 54, the foam in the liquid chamber 62 can flow into the second channel 32 through the guide groove 551, and the foam is output through the second channel 32. Preferably, in order to make the foam flow into the second channel 32 better through the guide groove 551, the inner wall of the guide ring 55 is provided with a plurality of the guide grooves 551 along the vertical direction.

[0068] Preferably, the inner wall of the guide ring 55 is provided with at least two guide grooves 552, and the outer wall of the push rod 34 has a guide slider 341 slidably assembled with the guide grooves 552. The present invention provides the guide grooves 552 on the inner wall of the guide ring 55 and the guide slider 341 on the outer wall of the push rod 34, so that after the guide slider 341 and the guide grooves 552 are slidably assembled together, it is ensured that the push rod 34 and the spray head 3 can move, and the spray head 3 can be limited by the cooperation of the guide slider 341 and the guide grooves 552, so that the spray head 3 can only move up and down but cannot rotate, so that once the spray head 3 is aligned with the desired position, the foam can be accurately sprayed to the desired position, and it will not be unable to be accurately sprayed to the desired position due to the rotation of the spray head 3.

[0069] As a specific embodiment of the housing 6 of the present invention, please refer to Figure 4-6 , Fig. 9 , Fig.12 and Fig.13 As shown, the housing 6 comprises:

[0070] The rotary cover 63 is provided with a movable channel 631 therethrough, and the spray head 3 has a movable column 35 movably arranged in the movable channel 631, so that the entire spray head 3 can move up and down relative to the rotary cover 63;

[0071] The base 64 is detachably connected to the lower end of the rotary cover 63, and the movable component 5 is arranged on the base 64, that is, the piston assembly chamber 621 is arranged on the top of the base 64; by designing that the base 64 and the lower end of the rotary cover 63 are detachably connected, it is convenient to install the movable component 5 and other parts into the interior of the entire shell 6, and it is also convenient to clean and replace the parts arranged inside the shell 6 when necessary; specifically, the inner wall of the lower end of the rotary cover 63 is symmetrically provided with two rotating grooves 632, and one end of each rotating groove 632 is provided with a sliding The outer wall of the base 64 is fixedly provided with a rotating slider 641 corresponding to each rotating groove 632, so that when the rotary cover 63 and the base 64 need to be assembled together, the rotating slider 641 of the base 64 only needs to be pressed into the sliding opening 633 and the rotary cover 63 is rotated, and the rotary cover 63 and the base 64 can be assembled together; and when the rotary cover 63 and the base 64 need to be disassembled and separated, the rotary cover 63 and the base 64 need only be rotated to make the rotating slider 641 slide to the sliding opening 633, and the rotary cover 63 and the base 64 can be separated, so that the whole operation is very convenient;

[0072] The sealing cover 65, the bottom of the movable column 35 is extended downward to be provided with a mounting portion 36, the upper end of the sealing cover 65 is connected to the mounting portion 36, and the lower end of the sealing cover 65 is tightly fitted with the outer edge of the base 64 to achieve a sealing effect, and the liquid passage cavity 62 is formed in the sealing cover 65; the push rod 34 is arranged at the bottom of the mounting portion 36; wherein, the sealing cover 65 can be a rubber sealing cover, which can not only play a sealing role, so that the foam delivered to the liquid passage cavity 62 will not seep out of the liquid passage cavity 62; at the same time, the sealing cover 65 can also play a role in resetting the nozzle 3, that is, when the nozzle 3 is pressed, the mounting portion 36 of the nozzle 3 can press the upper end of the sealing cover 65 downward to deform the sealing cover 65, and when the nozzle 3 is released, the sealing cover 65 can restore to its original state under the action of elastic force and drive the nozzle 3 to reset upward;

[0073] The flat gasket 66 is sleeved on the outside of the sealing cover 65; specifically, in order to achieve a better sealing effect, the outer edge of the lower end of the sealing cover 65 is extended outward to be provided with a fitting sheet 652, and the fitting sheet 652 is tightly attached to the top surface of the base 64, and the flat gasket 66 is located above the fitting sheet 652; because the rotary cover 63 and the base 64 are detachably connected, the rotary cover 63 needs to be rotated during use to realize the disassembly and assembly function. The present invention arranges a flat gasket 66 above the fitting sheet 652 of the sealing cover 65, so that when in use, the flat gasket 66 can be used to press the fitting sheet 652 downward to achieve a better sealing effect. At the same time, the arrangement of the flat gasket 66 can also prevent the rotary cover 63 from rubbing against the sealing cover 65 during rotation, thereby preventing the sealing cover 65 from being twisted and deformed and damaged due to contact friction.

[0074] Preferably, a limiting plate 361 is fixedly provided at the upper end of the mounting portion 36, and a blocking plate 362 is fixedly provided at the lower end of the mounting portion 36, and an annular groove 363 is formed between the limiting plate 361 and the blocking plate 362; a sleeve hole 651 is penetrated through the top of the sealing cover 65, and the upper end of the sealing cover 65 is sleeved in the annular groove 363 through the sleeve hole 651. Among them, the size of the limiting plate 361 is larger than the size of the active channel 631, so that the limiting plate 361 can cooperate with the blocking plate 362 to form the annular groove 363, and can also play a limiting role on the nozzle 3, so that the nozzle 3 cannot be pulled out through the active channel 631; the blocking plate 362 can play a limiting and blocking role on the upper end of the sealing cover 65. In the specific design, the inner diameter of the sleeve hole 651 at the top of the sealing cover 65 can be designed to be smaller than the outer diameter of the mounting part 36. In this way, after the sleeve hole 651 is sleeved into the annular groove 363, the mounting part 36 can fit tightly with the top of the sealing cover 65 to achieve sealing, and the blocking plate 362 can prevent the upper end of the sealing cover 65 from detaching from the mounting part 36.

[0075] In a preferred embodiment of the present invention, the method further includes: in the process of outputting foam through the first channel 31 of the nozzle 3, if the first trigger signal generated by the first trigger device 1 is received, the first trigger device 1 is controlled to enter a shielding state, in which the first trigger signal loses control over the foam generating device 2. Since in the second output mode, the foam can be output in a forward spraying manner, it is usually necessary to hold the foam machine in hand and press the nozzle 3 to eject the foam during use, so it is easy to cause the first trigger device 1 to be triggered by mistake during actual operation; the present invention adopts the method of controlling the first trigger device 1 to enter a shielding state when the foam is output through the first channel 31 of the nozzle 3, if the first trigger device 1 generates a first trigger signal, so that the first trigger signal loses control over the foam generating device 2, thereby avoiding the first trigger device 1 from being triggered by mistake.

[0076] More specifically, after controlling the first trigger device 1 to enter the shielding state, in order to restore the first trigger signal generated by the first trigger device 1, the method also includes: receiving a third trigger signal generated by the first trigger device 1, and controlling the first trigger device 1 to exit the shielding state based on the third trigger signal; the conditions for generating the first trigger signal and the third trigger signal are different, for example, the first trigger signal may be generated when the first trigger device 1 senses that a hand approaches; and the third trigger signal may be generated when the first trigger device 1 senses that a hand first approaches and then leaves, and then senses that a hand approaches again after a preset time interval (such as 2 seconds).

[0077] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A foam output method, characterized in that: The method includes a first output mode and a second output mode; In the first output mode, a first trigger signal generated by a first trigger device is received, and based on the first trigger signal, a foam generating device is controlled to deliver foam to the nozzle, and the foam is outputted through the first channel and the second channel of the nozzle; In the second output mode, a second trigger signal generated by a second trigger device is received, and based on the second trigger signal, the foam generating device is controlled to deliver foam to the nozzle, and the foam is output through the first channel of the nozzle; the second trigger signal is generated by triggering the second trigger device when the nozzle is operated to block the second channel; A push rod is provided at the bottom of the nozzle, and the input end of the first channel is located at the bottom of the push rod; a movable component is provided below the push rod, and the second trigger device is provided below the movable component; when the nozzle is pressed, the bottom surface of the push rod and the top surface of the movable component are in contact with each other to block the second channel, and at the same time, the push rod pushes the movable component to move, so that the movable component pushes the second trigger device to generate a second trigger signal; when the nozzle is released, the movable component resets upward and disengages from the second trigger device, and the nozzle resets upward and disengages from the movable component.

2. A foam output method according to claim 1, characterized in that: The channel cross-sectional area of ​​the first channel is smaller than the channel cross-sectional area of ​​the second channel; in the first output mode, the foam is output through the first channel and the second channel in a flowing manner; in the second output mode, the foam is output through the first channel in a jetting manner.

3. A foam output method according to claim 1, characterized in that: The outer wall of the nozzle is provided with a liquid outlet, the output ends of the first channel and the second channel are both connected to the liquid outlet, and the channel cross section of the output end of the first channel is circular.

4. A foam output method according to any one of claims 1 to 3, characterized in that: The method also includes: during the process of outputting foam through the first channel of the nozzle, if a first trigger signal generated by a first trigger device is received, controlling the first trigger device to enter a shielding state, in which the first trigger signal loses control over the foam generating device.

5. A foam output method according to claim 4, characterized in that: The method further includes: receiving a third trigger signal generated by the first trigger device, and controlling the first trigger device to exit a shielding state based on the third trigger signal; the first trigger signal and the third trigger signal are generated under different conditions.

6. A foam output method according to claim 1, characterized in that: The first trigger device is an induction switch.

7. A foam output method according to claim 1, characterized in that: The second trigger device is a key switch.

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