A foam discharge device

Abstract

The application provides a foam outlet device, which comprises a shell, a foam generating device, a spray head, a movable assembly and a trigger assembly, a liquid passing cavity is formed in the shell; the foam generating device is connected with the liquid passing cavity; the spray head is movably arranged on the shell, and the outer wall of the spray head is provided with a liquid outlet connected with the liquid passing cavity; the movable assembly is movably arranged in the shell, and the movable assembly is provided with a trigger part which extends to the outside of the shell; the trigger assembly is arranged outside the shell at a position corresponding to the trigger part; the spray head is operated to drive the movable assembly to move, so that the trigger part contacts the trigger assembly and triggers the foam generating device to deliver foam to the liquid outlet for output. The application has the advantages that the switching of the channel can be realized at the same time when the switch is triggered, an additional switching structure is not needed, one foam generating device can be shared to realize the liquid output in multiple modes, the overall structure of the foam machine can be simplified, the cost of the foam machine is reduced, and the operation and use are very convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foam machine products, in particular to a foam outlet device. BACKGROUND

[0002] In daily life, people are used to using some washing products or skin care products, such as using hand sanitizer when washing hands, using shampoo when washing hair, and applying sunscreen when going out in summer, etc. The washing products or skin care products are usually stored in a bottle purchased by the user, and the liquid is obtained by uncapping or pressing the pump head to squeeze out. However, whether it is uncapping or pressing the pump head, subsequent repeated rubbing is required to form foam.

[0003] In recent years, with the improvement of people's living quality, higher requirements have been put forward for the liquid outlet mode of hand sanitizer, dishwashing liquid, shampoo and other products, and foam machines have also emerged. Foam machines can realize the direct spraying of washing products or skin care products in the form of foam by using an electric foam pump to pump liquid and gas into a gas-liquid mixing chamber for mixing, so that repeated rubbing is not required when using.

[0004] In the prior art, there are foam machines that use sensors to realize foam output, such as a hand washing foam machine disclosed in Chinese Utility Model Patent No. CN202021151464.X, which includes a bottle, a shell, an electric foam pump, a control circuit, a battery, an output pipe, a liquid suction pipe, and a sensor. The hand washing foam machine can control the electric foam pump to work by sensing the user's hand with the sensor, draw hand sanitizer from the bottle, and spray hand sanitizer foam through the output pipe. Of course, there are also foam machines that use press key switches to realize foam output, such as a hand sanitizer machine with two liquid outlets disclosed in Chinese Utility Model Patent No. 202023093911.3, which has two liquid storage bottles, two pump bodies and two key switches. By pressing the key switches, two liquid outlet states can be realized. However, the key switches of the existing foam machines are directly arranged on the outside, and cannot realize channel switching when the key is triggered, so that when the foam machine needs to realize multiple mode liquid output, additional switching structure or multiple pump bodies need to be arranged in the foam machine, resulting in complex structure and high implementation cost of the entire foam machine. In view of the above problems, the present application has been developed after in-depth research on the problem. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a foam outlet device, which solves the problem that the key switch of the existing foam machine is directly arranged on the outside, the channel switching cannot be realized at the same time when the key is triggered, and when the foam machine needs to realize multiple modes of liquid outlet, a switching structure or multiple pump bodies need to be additionally arranged in the foam machine, thereby causing the structure of the entire foam machine to be complex and the implementation cost to be high.

[0006] The present application is implemented as follows: a foam outlet device, comprising:

[0007] A shell is formed with a liquid passing cavity inside;

[0008] A foam generating device is arranged with a liquid outlet end connected with the liquid passing cavity;

[0009] A spray head is movably arranged on the shell, and the outer wall of the spray head is provided with a liquid outlet port connected with the liquid passing cavity;

[0010] A movable assembly is movably arranged in the shell, and the shell is provided with an extension port, wherein the movable assembly is provided with a trigger part, and the trigger part extends to the outside of the shell through the extension port;

[0011] A trigger assembly is arranged outside the shell at a position corresponding to the trigger part;

[0012] The spray head drives the movable assembly to move, so that the trigger part contacts the trigger assembly and triggers the foam generating device to deliver foam to the liquid outlet port to realize foam output.

[0013] Further, the spray head is provided with a pushing rod, and the spray head is operated by moving the movable assembly through the pushing rod.

[0014] Further, the spray head is formed with a first channel and a second channel connected with the liquid outlet port, and the second channel extends to the top end of the pushing rod; the movable assembly is arranged in the shell at a position corresponding to the liquid passing cavity, and the pushing rod can block the second channel when the pushing rod contacts the movable assembly.

[0015] Further, the movable assembly comprises:

[0016] A piston body, wherein the lower end of the piston body serves as the trigger part;

[0017] A sealing ring, wherein the bottom of the liquid passing cavity is provided with a piston assembly cavity connected with the extension port; the piston assembly cavity is formed with a bearing step, and the sealing ring is arranged on the bearing step; the piston body is arranged above the sealing ring, the trigger part of the piston body passes through the sealing ring and extends to the extension port;

[0018] A sealing sheet arranged on the top of the piston body.

[0019] A guide ring is arranged at the upper end of the piston assembly cavity, and is located above the sealing sheet.

[0020] Further, the shell comprises:

[0021] A screw cap is provided with a movable channel, and the spray head is provided with a movable column movably arranged in the movable channel.

[0022] A base is detachably connected to the lower end of the screw cap, and the movable assembly is arranged on the base.

[0023] A sealing cover is connected to the mounting portion at the upper end, and the lower end of the sealing cover is tightly attached to the outer edge of the base, and the liquid passing cavity is formed in the sealing cover; the push rod is arranged at the bottom of the mounting portion.

[0024] A flat pad is sleeved on the outside of the sealing cover.

[0025] Further, the inner wall of the guide ring is provided with a flow guide groove, and the abutting end of the push rod is located in the guide ring.

[0026] Further, the inner wall of the guide ring is provided with at least two guide grooves, and the outer wall of the push rod is provided with a guide slider slidably assembled with the guide grooves.

[0027] Further, the upper end of the mounting portion is fixedly provided with a limiting sheet, and the lower end of the mounting portion is fixedly provided with a blocking sheet, and the limiting sheet and the blocking sheet form an annular groove; the top of the sealing cover is provided with a sleeve hole, and the upper end of the sealing cover is sleeved in the annular groove through the sleeve hole.

[0028] Further, the channel cross-sectional area of the first channel is smaller than the channel cross-sectional area of the second channel.

[0029] Further, the trigger assembly is a key switch.

[0030] The foam device is provided with a movable assembly movably arranged in a shell and a spray head movably arranged on the shell, the movable assembly is provided with a trigger portion extending out of the shell, a trigger assembly is arranged outside the shell corresponding to the position of the trigger portion, the spray head is provided with a pushing rod, the spray head is provided with a first channel and a second channel in communication with a liquid outlet, and the second channel extends to the top end of the pushing rod; when the foam device is needed to output foam, the spray head is operated to drive the movable assembly to move, the trigger portion of the movable assembly contacts the trigger assembly to generate a trigger signal and trigger the foam generating device to output foam, and the contact between the pushing rod and the movable assembly can block the second channel; therefore, the technical scheme of the foam device has at least the following beneficial effects:

[0031] 1、When the trigger assembly is triggered by the movable assembly driven by the operation of the spray head, the second channel is blocked to switch the channels, so that when the foam machine needs to output liquid in multiple modes, no additional switching structure needs to be arranged in the foam machine to switch the channels, and one foam generating device can be shared to output liquid in multiple modes; therefore, the overall structure of the foam machine can be simplified, the overall structure of the foam machine is more compact, the overall cost of the foam machine is reduced, the market competitiveness is improved, and the operation and use are very convenient.

[0032] 2、The trigger assembly can be conveniently hidden inside the foam machine, which helps to improve the waterproof performance of the foam machine and make the external structure of the foam machine more simple and beautiful.

[0033] 3、The trigger mode of the foam machine when outputting foam can be enriched to provide more choices for users.

[0034] 4、The channel cross-sectional area of the first channel is designed to be smaller than that of the second channel, the smaller the channel cross-sectional area, the faster the flow rate, the first channel can be used as a rapid flow channel, and the first channel and the second channel can be used as a slow flow channel; when the foam generating device is triggered by pressing the spray head to drive the trigger assembly, the foam can be directly sprayed forward through the first channel and the liquid outlet, and this forward spraying mode can be used to spray detergent foam when cleaning doors and windows; when the foam generating device is triggered by a traditional trigger mode (such as an inductor), the foam can flow out slowly through the first channel and the second channel and flow downward, and this downward flow mode can be used to flow out washing foam when washing hands or face; therefore, the use requirements of multiple occasions can be well met.

[0035] 5、design activity components have a sealing ring for with the piston assembly cavity cavity wall contact and for with push against the end of the top of the sealing sheet, both can be a good implementation of the second channel for effective blocking, but also can effectively prevent foam from the outlet, can guarantee the sealing effect.

[0036] 6、design activity components have located above the sealing sheet guide ring, and the inner wall of the guide ring is provided with a guide groove and a guide groove, both can be used to limit the sealing sheet upward travel, to ensure that the nozzle upward rebound push against the rod can be separated from the sealing sheet; also can use the guide groove to guide the foam into the second channel; at the same time, the guide groove can also be used to limit the nozzle, so that the nozzle can only move up and down and can not be rotated, so that once the nozzle is aimed at the desired position, the foam can be accurately sprayed to the desired position, and the nozzle can not be rotated to accurately spray to the desired position.

[0037] 7、design shell includes detachable connection of the screw cap and the base, and the base is formed with a foam core installation cavity in communication with the liquid inlet, and the foam core is installed in the foam core installation cavity, so that the foam core can be conveniently replaced or cleaned.

[0038] 8、in the shell is provided with a sealing cover forming a liquid chamber, which can realize the sealing effect, so that the foam in the liquid chamber can not be penetrated out of the liquid chamber, and the sealing cover can also be used to reset the nozzle.

DRAWINGS

[0039] The application will be further described below with reference to the accompanying drawings and embodiments.

[0040] Figure 1 is the three-dimensional structure of the foam generating device of the application;

[0041] Figure 2 is the exploded view of the foam generating device of the application when the foam generating device is removed;

[0042] Figure 3 is the cross-sectional view of the foam generating device of the application when the foam generating device is removed;

[0043] Figure 4 is the overall structure of the movable assembly in the application;

[0044] Figure 5 is the exploded view of the movable assembly in the application;

[0045] Figure 6 is the internal structure of the screw cap in the application;

[0046] Figure 7 is one of the structure schematic views of the nozzle in the application;

[0047] Figure 8 Fig. 2 is a schematic view of the structure of the nozzle in the present application;

[0048] Figure 9 Fig. 3 is a schematic view of the top structure of the base in the present application;

[0049] Figure 10 Fig. 4 is a schematic view of the bottom structure of the base in the present application;

[0050] Figure 11 Fig. 5 is a schematic view of the overall structure of the foam generating device in the present application when including the bottle body;

[0051] Figure 12 Fig. 6 is an exploded view of the foam generating device in the present application when including the bottle body;

[0052] Figure 13 Fig. 7 is a sectional view of the foam generating device in the present application when including the bottle body.

[0053] Explanation of reference signs:

[0054] Housing 1, liquid passing cavity 11, piston assembly cavity 111, bearing step 112, guide ring support step 113, limiting groove 114, outlet 12, screw cap 13, movable channel 131, rotating groove 132, sliding opening 133, base 14, rotating slider 141, liquid inlet interface 142, foaming core installation cavity 143, foaming core 144, sealing cover 15, sleeve hole 151, adhering sheet 152, flat pad 16;

[0055] Foam generating device 2, air inlet pipeline 21, liquid inlet pipeline 22;

[0056] Nozzle 3, liquid outlet 31, push against rod 32, guide slider 321, first channel 33, second channel 34, movable column 35, installation part 36, limiting sheet 361, baffle 362, annular groove 363;

[0057] Movable assembly 4, trigger part 41, piston body 42, main disc body 421, sleeve joint shaft 422, sealing ring 43, sealing sheet 44, guide ring 45, flow guide groove 451, guide groove 452, limiting block 453;

[0058] Trigger assembly 5;

[0059] Control mainboard 6;

[0060] Machine shell 7, threaded interface 71;

[0061] Infrared sensor 8;

[0062] Bottle body 9.

DETAILED DESCRIPTION

[0063] For better understanding of the technical solutions of the present application, the technical solutions of the present application will be described in detail below in combination with the drawings of the specification and specific embodiments.

[0064] It should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing these embodiments and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation. In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can be explicitly or implicitly included one or more of the features.

[0065] Because the existing foam machine does not use an inductor to sense and output foam, or uses a key switch arranged outside to output foam, the key switch arranged outside cannot switch channels when the key is triggered, so that when the foam machine needs to output liquid in multiple modes, a switching structure or multiple pump bodies need to be additionally arranged in the foam machine, thereby causing the structure of the entire foam machine to be complex and the implementation cost to be high. Therefore, in the technical solutions of the embodiments of the present application, a new trigger mode for outputting foam is provided, and the new trigger mode can facilitate switching channels when a switch is triggered, and the general idea is as follows: a foam device is designed to have a movable component movably arranged in a shell and a nozzle movably arranged on the shell, the movable component has a trigger portion extending out of the shell, and a trigger component is arranged outside the shell corresponding to the position of the trigger portion, so that when foam needs to be output by the foam output device, the nozzle only needs to be operated to drive the movable component to move, and the movable component can drive the trigger portion to contact the trigger component when moving, so that the trigger component generates a trigger signal and triggers the foam generating device to output foam.

[0066] Please refer to Figures 1 to 13 A preferred embodiment of a foam output device of the present application is shown in the drawings, which comprises:

[0067] A shell 1, a liquid passing cavity 11 is formed in the shell 1, which serves as a transition chamber for the transition of foam;

[0068] A foam generating device 2, the liquid outlet end of the foam generating device 2 is connected with the liquid passing cavity 11, and the foam generating device 2 can deliver the generated foam into the liquid passing cavity 11 when working;

[0069] a spray head 3 movably arranged on the housing 1, i.e. the spray head 3 is movable relative to the housing 1, an outer wall of the spray head 3 having a liquid outlet 31 in communication with the liquid passing cavity 11, the foam generated by the foam generating device 2 being capable of being outputted via the inside of the spray head 3 and through the liquid outlet 31 after being delivered to the liquid passing cavity 11;

[0070] a movable assembly 4 movably arranged in the housing 1, i.e. the movable assembly 4 is movable relative to the housing 1, the housing 1 being provided with an extension opening 12, the movable assembly 4 having a trigger portion 41 extending to outside of the housing 1 through the extension opening 12;

[0071] a trigger assembly 5 arranged outside of the housing 1 at a position corresponding to the trigger portion 41, so that when the movable assembly 4 is moved, the trigger portion 41 is capable of acting on the trigger assembly 5, thereby causing the trigger assembly 5 to generate a trigger signal;

[0072] When the foam generating device is in operation, the movable assembly 4 is moved by operating the spray head 3, so that the trigger portion 41 contacts the trigger assembly 5 and triggers the foam generating device 2 to deliver the foam to the liquid outlet 31 to realize foam output.

[0073] In the preferred embodiment of the present application, in order to enable the spray head 3 to move the movable assembly 4, the spray head 3 is provided with a pushing rod 32, specifically, the pushing rod 32 is arranged at one end of the spray head 3 facing the movable assembly 4, and the pushing rod 32 is arranged corresponding to the movable assembly 4; when the spray head 3 is operated, the movable assembly 4 is moved by the pushing rod 32, specifically, the spray head 3 is pressed to move the movable assembly 4 in the up-down direction by the pushing rod 32.

[0074] As a specific embodiment of the present application, please refer to Figures 7-8As shown, the nozzle 3 is formed with a first channel 33 and a second channel 34 in communication with the liquid outlet 31, and the foam in the liquid cavity 11 can be delivered to the liquid outlet 31 through the first channel 33 and / or the second channel 34, and the second channel 34 extends to the top end of the pushing rod 32; the movable assembly 4 is arranged in the shell 1 at a position corresponding to the liquid cavity 11, and the pushing rod 32 is located in the liquid cavity 11 at a position corresponding to the movable assembly 4, and the pushing rod 32 can block the second channel 34 when it is in contact with the movable assembly 4. By forming the first channel 33 and the second channel 34 in the nozzle 3 and extending the second channel 34 to the top end of the pushing rod 32, when the nozzle 3 is operated to drive the movable assembly 4 to move, the pushing rod 32 can be in contact with the movable assembly 4 and block the second channel 34, so that the foam delivered by the foam generating device 2 can only be output through the first channel 33; when the nozzle 3 is not operated, the pushing rod 32 can be separated from the movable assembly 4, and at this time, a traditional trigger mode (such as using an inductor for induction) can be used, so that the foam delivered by the foam generating device 2 can be output through the first channel 33 and the second channel 34 together, thereby realizing multiple modes of liquid output.

[0075] The foam device is designed to have the movable assembly 4 movably arranged in the shell 1 and the nozzle 3 movably arranged on the shell 1, the movable assembly 4 has a trigger portion 41 extending out of the shell 1, a trigger assembly 5 is arranged at a position corresponding to the trigger portion 41 outside the shell 1, the nozzle 3 has a pushing rod 32, the nozzle 3 has a first channel 33 and a second channel 34 in communication with the liquid outlet 31, and the second channel 34 extends to the top end of the pushing rod 32; so when it is needed to output foam through the foam device, the nozzle 3 can be operated to drive the movable assembly 4 to move, the movable assembly 4 can drive the trigger portion 41 to contact the trigger assembly 5 when it moves, so that the trigger assembly 5 generates a trigger signal and triggers the foam generating device 2 to generate foam output, and the pushing rod 32 in contact with the movable assembly 4 can block the second channel 34; therefore, by using the technical solution of the present application, at least the following beneficial effects are achieved:

[0076] 1. When the nozzle 3 is operated to drive the movable assembly 4 to trigger the trigger assembly 5 to generate a trigger signal, the second channel 34 can be blocked to realize channel switching, so that when the foam machine needs to realize multiple modes of liquid output, it is not necessary to additionally arrange a switching structure in the foam machine for channel switching, and one foam generating device 2 can be shared to realize multiple modes of liquid output; therefore, the overall structure of the foam machine can be simplified, the overall structure of the foam machine is more compact, the overall cost of the foam machine can be reduced, the market competitiveness can be improved, and the operation and use are also very convenient.

[0077] 2. The trigger assembly 5 can be conveniently hidden inside the foam machine, which helps to improve the waterproof performance of the foam machine and make the external structure of the foam machine more simple and beautiful.

[0078] 3. The trigger mode of the foam machine when outputting foam can be enriched, providing more choices for users.

[0079] In this specific embodiment, the channel cross-sectional area of the first channel 33 is smaller than that of the second channel 34. Since the smaller the channel cross-sectional area, the faster the flow rate, the present application can use the first channel 33 as a rapid flow channel and use the first channel 33 and the second channel 34 as a slow flow channel when it is implemented. In this way, when the trigger assembly 5 is triggered to work by pressing the spray head 3, the foam generated by the foam generating device 2 can be directly sprayed forward through the first channel 33 and the liquid outlet 31. This forward spraying mode can be used to spray detergent foam when cleaning doors and windows, and can also be used to spray hair spray foam. When the foam generating device 2 is triggered by a traditional trigger mode (such as using an inductor for induction), the foam generated by the foam generating device 2 can flow through the first channel 33 and the second channel 34 to the liquid outlet 31, and then flow downward from the liquid outlet 31. This downward flow mode can be used to flow out washing foam when washing hands or face. Therefore, it can well meet the use requirements of various occasions. Preferably, the channel cross-section of the output end of the first channel 33 is circular, so that the foam can be better sprayed forward.

[0080] As another specific embodiment of the present application, the first channel 33 is formed in the spray head 3 and communicates with the liquid outlet 31, and the foam in the liquid passing cavity 11 can be delivered to the liquid outlet 31 through the first channel 33. In this another specific embodiment, since the push rod 32 is only used to trigger the switch, the movable assembly 4 and the push rod 32 can be arranged in the liquid passing cavity 11 or outside the liquid passing cavity 11, and the push rod 32 can be connected to the bottom of the spray head 3 or connected to the side wall of the spray head 3 as needed.

[0081] As a preferred embodiment of the movable assembly 4 of the present application, please refer to Figures 3-5 As shown in the figure, the movable assembly 4 comprises:

[0082] The piston body 42, the lower end of the piston body 42 serving as the trigger part 41;

[0083] A sealing ring 43 is arranged on the bottom of the liquid cavity 11, and a piston assembly cavity 111 is arranged in the liquid cavity 11 and communicates with the outlet 12, so that the trigger part 41 can extend out of the housing 1 through the outlet 12; a bearing step 112 is formed in the piston assembly cavity 111, and the sealing ring 43 is arranged on the bearing step 112; the piston body 42 is arranged above the sealing ring 43, and the trigger part 41 of the piston body 42 extends through the sealing ring 43 and extends to the outlet 12; the bearing step 112 can support the entire movable assembly 4, so that the movable assembly 4 will not fall off the outlet 12 when the push rod 32 pushes the movable assembly 4 to move; the sealing ring 43 can be a rubber sealing ring, the inner wall of the sealing ring 43 is tightly arranged with the trigger part 41, and the outer wall of the sealing ring 43 is tightly arranged with the cavity wall of the piston assembly cavity 111, so that the sealing ring 43 can play a good sealing role after the movable assembly 4 is installed in the piston assembly cavity 111, and the foam will not seep out of the outlet 12;

[0084] A sealing piece 44 is arranged on the top of the piston body 42; when the push rod 32 has a second channel 34, the sealing piece 44 can seal and block the second channel 34 when the push rod 32 contacts the sealing piece 44, and in specific implementation, the sealing piece 44 can be a rubber sealing piece, the outer edge of the sealing piece 44 is in close contact with the cavity wall of the piston assembly cavity 111, so that the sealing piece 44 can also seal the gap between the piston body 42 and the piston assembly cavity 111, thereby further preventing the foam from seeping out of the outlet 12;

[0085] A guide ring 45 is arranged at the upper end of the piston assembly cavity 111 and is located above the sealing piece 44; the guide ring 45 can limit the positions of the piston body 42, the sealing ring 43 and the sealing piece 44 installed in the piston assembly cavity 111, so that the piston body 42, the sealing ring 43 and the sealing piece 44 will not be separated from the piston assembly cavity 111, and the guide ring 45 can also limit the upward stroke of the sealing piece 44, so that the push rod 32 can be separated from the sealing piece 44 after the nozzle 3 rebounds upward; in specific implementation, an upper end inner wall of the piston assembly cavity 111 is formed with a guide ring supporting step 113, the guide ring 45 is supported on the guide ring supporting step 113, and a gap can be reserved between the lower end of the guide ring 45 and the sealing piece 44, so that the piston body 42 can better move up and down.

[0086] When the nozzle 3 is pressed to push the pushing rod 32 to push the piston body 42 to move downward, the trigger part 41 of the piston body 42 can extend from the outlet 12 and press the trigger assembly 5 downward, so that the trigger assembly 5 can trigger the foam generating device 2 to work, and meanwhile the piston body 42 can press the sealing ring 43 downward to make the sealing ring 43 deformed; when the nozzle 3 is released, the piston body 42 can automatically float upward to realize homing under the elastic force of the trigger assembly 5 and the sealing ring 43, so that the piston body 42 is separated from the trigger assembly 5.

[0087] More specifically, the inner wall of the guide ring 45 is provided with a flow guide groove 451, and the abutting end of the pushing rod 32 is located in the guide ring 45. By extending the abutting end of the pushing rod 32 into the guide ring 45, it can be ensured that each time the nozzle 3 is pressed, the nozzle 3 can drive the pushing rod 32 to accurately push the movable assembly 4; at the same time, because the inner wall of the guide ring 45 is provided with the flow guide groove 451, the foam delivered to the liquid cavity 11 can enter above the sealing piece 44 through the flow guide groove 451, so that when the pushing rod 32 has the second channel 34, if the foam generating device 2 is triggered to work in a traditional trigger mode (such as using an inductor for induction) without pressing the nozzle 3, the foam in the liquid cavity 11 can flow into the second channel 34 through the flow guide groove 451 and output the foam through the second channel 34. Preferably, in order to make the foam flow into the second channel 34 through the flow guide groove 451 better, the inner wall of the guide ring 45 is provided with a plurality of flow guide grooves 451 along the vertical direction.

[0088] More specifically, the inner wall of the guide ring 45 is provided with at least two guide grooves 452, and the outer wall of the pushing rod 32 has a guide sliding block 321 which is slidably assembled with the guide grooves 452. By providing the guide grooves 452 on the inner wall of the guide ring 45 and the guide sliding blocks 321 on the outer wall of the pushing rod 32, after the guide sliding blocks 321 and the guide grooves 452 are slidably assembled together, it can not only ensure that the pushing rod 32 and the nozzle 3 can move, but also can limit the nozzle 3 by the cooperation of the guide sliding blocks 321 and the guide grooves 452, so that the nozzle 3 can only move up and down but cannot rotate, so that once the nozzle 3 is aligned with the required position, the foam can be accurately sprayed to the required position, and the foam cannot be accurately sprayed to the required position due to the rotation of the nozzle 3.

[0089] More specifically, the inner wall of the upper end of the piston assembly cavity 111 is provided with a limiting groove 114, the outer wall of the guide ring 45 is provided with a limiting block 453, the limiting block 453 is arranged in the limiting groove 114; at the same time, the guide ring 45 is in close fit connection with the upper end of the piston assembly cavity 111, so that after the guide ring 45 is pressed into the upper end of the piston assembly cavity 111, the guide ring 45 can be reliably combined with the piston assembly cavity 111, so that the guide ring 45 cannot be separated from the piston assembly cavity 111; of course, in specific implementation, in order to make the guide ring 45 and the piston assembly cavity 111 more reliably combined together, the guide ring 45 and the piston assembly cavity 111 can be glued and fixed.

[0090] More specifically, the piston body 42 includes a main disc body 421, the outer edge of the main disc body 421 is arranged in close fit with the cavity wall of the piston assembly cavity 111; the trigger part 41 is a column body integrally formed in the middle of the bottom of the main disc body 421, a sleeve joint shaft 422 is integrally formed in the middle of the top of the main disc body 421, and the sealing sheet 44 is sleeved on the sleeve joint shaft 422.

[0091] As a preferred embodiment of the shell 1 of the present application, please refer to Figures 2-3 , Figure 6 , Figure 9 and Figure 10 , the shell 1 comprises:

[0092] The rotating cover 13 is provided with a movable channel 131, the spray head 3 has a movable column 35 movably arranged in the movable channel 131, so that the whole spray head 3 can move up and down relative to the rotating cover 13;

[0093] The base 14 is detachably connected with the lower end of the rotating cover 13, and the movable assembly 4 is arranged on the base 14, that is, the piston assembly cavity 111 is arranged on the top of the base 14; by designing the base 14 and the lower end of the rotating cover 13 to be detachably connected, it is convenient to install the movable assembly 4 and other parts into the whole shell 1, and it is also convenient to clean and replace the parts arranged in the shell 1 when needed;

[0094] The bottom of the movable column 35 is provided with a mounting portion 36, the upper end of the sealing cover 15 is connected with the mounting portion 36, the lower end of the sealing cover 15 is tightly attached to the outer edge of the base 14 to achieve a sealing effect, and the over-liquid cavity 11 is formed in the sealing cover 15; the push rod 32 is arranged at the bottom of the mounting portion 36; wherein the sealing cover 15 can adopt a rubber sealing cover, which can not only play a sealing role to prevent the foam conveyed into the over-liquid cavity 11 from leaking out of the over-liquid cavity 11, but also can play a resetting role on the spray head 3, that is, when the spray head 3 is pressed, the mounting portion 36 of the spray head 3 can press down the upper end of the sealing cover 15 to make the sealing cover 15 deform, and when the spray head 3 is released, the sealing cover 15 can restore to the original state under the action of the elastic force and drive the spray head 3 to reset upward.

[0095] The flat pad 16 is sleeved outside the sealing cover 15; specifically, in order to achieve a better sealing effect, the lower end of the sealing cover 15 is provided with a fit piece 152 extending outward, the fit piece 152 is tightly attached to the top surface of the base 14, and the flat pad 16 is located above the fit piece 152; since the screw cap 13 and the base 14 are detachably connected, the screw cap 13 needs to be rotated to realize the disassembly function during use, and the flat pad 16 is arranged above the fit piece 152 of the sealing cover 15, so that the fit piece 152 can be pressed down tightly by the flat pad 16 during use, thereby achieving a better sealing effect, and the arrangement of the flat pad 16 can also avoid the frictional contact between the screw cap 13 and the sealing cover 15 during rotation, thereby preventing the sealing cover 15 from being distorted and damaged due to contact friction.

[0096] More specifically, the upper end of the mounting portion 36 is fixedly provided with a limiting piece 361, the lower end of the mounting portion 36 is fixedly provided with a blocking piece 362, and the limiting piece 361 and the blocking piece 362 form an annular groove 363 therebetween; the top of the sealing cover 15 is provided with a sleeve hole 151, and the upper end of the sealing cover 15 is sleeved in the annular groove 363 through the sleeve hole 151. wherein the size of the limiting piece 361 is greater than the size of the movable channel 131, so that the limiting piece 361 can cooperate with the blocking piece 362 to form the annular groove 363 and also can limit the spray head 3 to prevent the spray head 3 from being pulled out of the movable channel 131; the blocking piece 362 can limit the upper end of the sealing cover 15, and in specific design, the inner diameter of the sleeve hole 151 at the top of the sealing cover 15 can be designed to be smaller than the outer diameter of the mounting portion 36, so that after the sleeve hole 151 is sleeved in the annular groove 363, the mounting portion 36 can be tightly attached to the top of the sealing cover 15 to achieve sealing, and the blocking piece 362 can prevent the upper end of the sealing cover 15 from being separated from the mounting portion 36.

[0097] More specifically, the inner wall of the lower end of the screw cap 13 is symmetrically provided with two rotating grooves 132, one end of each of the rotating grooves 132 is provided with a sliding opening 133, the outer wall of the base 14 is fixedly provided with a rotating sliding block 141 corresponding to each of the rotating grooves 132, so that when the screw cap 13 and the base 14 need to be assembled together, the rotating sliding block 141 of the base 14 is only needed to be pressed into the sliding opening 133 and the screw cap 13 is rotated, so that the screw cap 13 and the base 14 can be assembled together, and when the screw cap 13 and the base 14 need to be separated, the screw cap 13 is only needed to be rotated to make the rotating sliding block 141 slide to the sliding opening 133, so that the screw cap 13 and the base 14 can be separated, so the whole operation is very convenient.

[0098] More specifically, the bottom of the base 14 is provided with a liquid inlet interface 142 which is communicated with the liquid passing cavity 11, and the liquid outlet end of the foam generating device 2 is fixedly connected with the liquid inlet interface 142.

[0099] More specifically, the top of the base 14 is formed with a foaming core mounting cavity 143 which is communicated with the liquid inlet interface 142 in the liquid passing cavity 11, and the foaming core mounting cavity 143 is detachably mounted with a foaming core 144, so that the foam generated by the foam generating device 2 can be divided by the foaming core 144, so that the fine mousse-like foam can be sprayed, and the foaming core 144 is detachably mounted on the base 14, and the base 14 and the screw cap 13 are also detachably connected, so that the foaming core 144 can be conveniently replaced, cleaned and the like, so that the normal output of the foam is not affected by the blockage of the foaming core 144.

[0100] In the preferred embodiment of the present application, the trigger assembly 5 is a push button switch.

[0101] In the preferred embodiment of the present application, the foam generating device 2 adopts an electric foam pump, and the electric foam pump has been widely used in the prior art, and its specific structure is well known to those skilled in the art, so the specific structure of the electric foam pump will not be described in detail here.

[0102] More specifically, the foam outlet device further comprises a control mainboard 6, a casing 7 and an infrared sensor 8; the foam generator 2, the trigger assembly 5 and the infrared sensor 8 are electrically connected with the control mainboard 6; the trigger assembly 5 is fixed on the control mainboard 6, and the infrared sensor 8 is fixed on the outer wall of the casing 7; the foam generator 2 and the control mainboard 6 are arranged inside the casing 7, and the upper end of the casing 7 is sealingly and fixedly connected with the shell 1, that is, the shell 1 serves as the upper cover of the casing 7, and the upper end of the casing 7 is sealed through the shell 1 to achieve the sealing and waterproof effect; the control mainboard 6 is fixedly arranged on the upper end of the casing 7 close to the shell 1, so that when the spray head 3 is pressed, the push rod 32 can push the trigger part 41 of the movable assembly 4 to contact the trigger assembly 5 on the control mainboard 6 to realize the pressing. Meanwhile, the bottom of the casing 7 is provided with a threaded interface 71 for connecting with the bottle body 9, so that the foam outlet device and the bottle body 9 containing the washing liquid and other products can be connected together through the threaded interface 71 during use; the foam generator 2 is connected with an air inlet pipeline 21 and a liquid inlet pipeline 22, the air inlet pipeline 21 extends to the outside of the casing 7 and is connected with the outside air, so that the outside air can be conveyed into the foam generator 2 through the air inlet pipeline 21; the liquid inlet pipeline 22 extends to the outside of the casing 7 and is inserted into the bottle body 9 to realize the suction of the washing liquid and other products from the bottle body 9.

[0103] The overall working principle of the foam outlet device is as follows: when the user presses the spray head 3, the spray head 3 can drive the push rod 32 to push the movable assembly 4 to move downward, at this time the second channel 34 in the push rod 32 is blocked, the trigger part 41 of the movable assembly 4 can be extended from the outlet 12 and press the trigger assembly 5 when the movable assembly 4 moves downward, the trigger assembly 5 sends a trigger signal to the control mainboard 6 after being pressed, the control mainboard 6 controls the foam generating device 2 to work, the foam generating device 2 sucks liquid from the bottle body 9 through the liquid inlet pipeline 22, and at the same time, sucks air from the outside through the air inlet pipeline 21, and makes the liquid and air mix in the foam generating device 2 to generate foam, the foam generating device 2 delivers the generated foam to the liquid passing cavity 11, and sprays the foam forward through the first channel 33 and the liquid outlet 31. When the user releases the spray head 3, the movable assembly 4 can automatically move upward to reset under the elastic force of the trigger assembly 5 and the sealing ring 43 of the movable assembly 4, so that the movable assembly 4 is separated from the trigger assembly 5; at the same time, the spray head 3 and the push rod 32 can also automatically move upward to reset under the elastic force of the sealing cover 15 in the shell 1, so that the push rod 32 is separated from the movable assembly 4. When the user puts the hand close to the infrared sensor 8, the infrared sensor 8 sends a trigger signal to the control mainboard 6, the control mainboard 6 controls the foam generating device 2 to work, the foam generating device 2 sucks liquid from the bottle body 9 through the liquid inlet pipeline 22, and at the same time, sucks air from the outside through the air inlet pipeline 21, and makes the liquid and air mix in the foam generating device 2 to generate foam, the foam generating device 2 delivers the generated foam to the liquid passing cavity 11, and flows downward through the first channel 33, the second channel 34 and the liquid outlet 31.

[0104] Although the specific embodiments of the present application are described above, those skilled in the art should understand that the specific embodiments described are only illustrative, and are not intended to limit the scope of the present application, and equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present application should be covered within the scope of the claims of the present application.

Claims

1. A foam-dispensing device characterized by: The application relates to a foam output device. The foam output device comprises a shell, a foam generating device, a spray head, a movable assembly and a trigger assembly. The shell is internally formed with a liquid passing cavity. The foam generating device is connected with the liquid passing cavity through a liquid outlet. The spray head is movably arranged on the shell, and the outer wall of the spray head is provided with a liquid outlet connected with the liquid passing cavity. The movable assembly is movably arranged in the shell, and the shell is provided with an outlet. The movable assembly is provided with a trigger part which extends to the outside of the shell through the outlet. The trigger assembly is arranged outside the shell and corresponds to the trigger part.

2. A foam-dispensing device as defined in claim 1, characterized in that: The spray head drives the movable assembly to move, so that the trigger part contacts the trigger assembly and triggers the foam generating device to deliver foam to the liquid outlet to realize foam output. The spray head is provided with a pushing rod which drives the movable assembly to move when the spray head is operated. The spray head is internally formed with a first channel and a second channel which are connected with the liquid outlet, and the second channel extends to the top end of the pushing rod. The movable assembly is arranged in the shell and corresponds to the liquid passing cavity. The movable assembly comprises a piston body, a sealing ring, a sealing sheet and a guide ring.

3. A foam-dispensing device as defined in claim 1, wherein: The lower end of the piston body is the trigger part. The bottom of the liquid passing cavity is provided with a piston assembly cavity which is connected with the outlet. The piston assembly cavity is internally formed with a bearing step, and the sealing ring is arranged on the bearing step. The piston body is arranged above the sealing ring, and the trigger part of the piston body penetrates through the sealing ring and extends to the outlet. The guide ring is arranged at the upper end of the piston assembly cavity and is above the sealing sheet.

4. A foam discharge device as claimed in claim 2, characterised in that: The shell comprises a screw cap, a base and a sealing cover.

5. A foam discharge device as claimed in claim 2, characterised in that: The screw cap is provided with a movable channel, and the spray head is provided with a movable column movably arranged in the movable channel.

6. A foam-dispensing device as defined in claim 3, wherein: The movable assembly is arranged on the base.

7. A foam discharge device as defined in claim 1, wherein: The bottom of the movable column extends downward to form an installation part.

8. A foam-dispensing device as claimed in any one of claims 1 to 7, characterized in that: The upper end of the sealing cover is connected with the installation part, and the lower end of the sealing cover is tightly combined with the outer edge of the base. The liquid passing cavity is formed in the sealing cover. The pushing rod is arranged at the bottom of the installation part. The flat pad is sleeved on the outside of the sealing cover. The inner wall of the guide ring is provided with a guide groove. The outer wall of the pushing rod is provided with a guide sliding block which is slidably arranged in the guide groove. The upper end of the installation part is fixedly provided with a limiting sheet, and the lower end of the installation part is fixedly provided with a blocking sheet. The limiting sheet and the blocking sheet form an annular groove. The top of the sealing cover is provided with a sleeve hole, and the upper end of the sealing cover is sleeved in the annular groove through the sleeve hole. The channel sectional area of the first channel is smaller than that of the second channel. The trigger assembly is a key switch.

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