Kit for a water flow switch for a handle of a waterpik

Abstract

The application provides an assembled oral irrigator handle with a water flow switch, and belongs to the field of oral cleaning and nursing, comprising a handle shell, a water flow switch control mechanism, a nozzle mechanism and a water pipe mechanism; wherein the water pipe mechanism and the nozzle mechanism are respectively communicated with the water flow switch control mechanism, and the handle shell covers the above-mentioned structures to play a protective and holding role for the user. When the water flow switch control mechanism is opened, the water pipe mechanism transmits the pulse water flow of the oral irrigator host to the nozzle mechanism through the water flow switch control mechanism and then sprays it out. When the water flow switch control mechanism is closed, the transmission between the water pipe mechanism and the nozzle mechanism is interrupted, and is not affected by the water leakage caused by the pressure difference between the residual water amount of the water pipe mechanism and the water level of the oral irrigator host. Moreover, the water flow switch control mechanism plays a role of connecting the upper and lower parts as an intermediate core component, so that the overall structure is linear, and the waterway design is reasonable and unobstructed.

Description

Technical Field

[0001] This invention relates to the field of oral care and cleaning, and more particularly to an assembled water flosser handle with a water flow switch. Background Technology

[0002] A water flosser is an auxiliary tool for cleaning the oral cavity. It uses pulsed water jets to clean teeth and between teeth. There are mainly handheld and countertop types. The biggest feature of countertop water flossers is that the water tank is much larger than that of portable ones, making them suitable for multiple family members to use together. It includes a main unit and a handle. The main unit has a water pump mechanism that transmits water from the tank to the handle in the form of pulsed water jets. The handle is detachably equipped with nozzles, and different nozzles can be selected according to the needs of different family members.

[0003] The existing benchtop water flosser handle design still has some shortcomings, such as:

[0004] A single mechanical control handle controls the flow of water, but it cannot completely close the water flow. This poses a risk of leakage / dripping if the handle remains below the water level in the main unit for an extended period (due to pressure differences caused by varying liquid levels). Furthermore, the structure is complex and the water circuit design is flawed. Therefore, this invention was developed to address these issues. Summary of the Invention

[0005] The purpose of this invention is to provide a water flosser handle that can easily block and connect water flow, and features a fully assembled structure and convenient water circuit design. To this end, this invention provides an assembled water flosser handle with a water flow switch, characterized by comprising:

[0006] The handle housing includes a first housing and a second housing, the first housing and the second housing are snapped together and a mounting cavity is formed inside, a top mounting opening is formed at the top and a bottom mounting opening is formed at the bottom;

[0007] A water flow switch control mechanism, which is assembled within the mounting cavity, and the water flow switch control mechanism includes at least:

[0008] A valve seat, wherein the valve seat has at least an inlet chamber and a control chamber, the inlet chamber and the control chamber are connected by a communication channel, and the control chamber has a valve core mounting port;

[0009] A control valve core is disposed in the control chamber through the valve core mounting port. The control valve core has a force-applying part, which applies force to the water inlet chamber in a controllable manner by the control valve core.

[0010] A blocking seal includes a blocking seal body and a first elastic reset member. The blocking seal body is disposed in the water inlet chamber and is repositionably blocked in the communication channel by the first elastic reset member. The blocking seal body has a force-receiving part that is subjected to force by the force-applying part through the communication channel. After the blocking seal body is subjected to force by the force-receiving part through the force-applying part, it moves to open the communication channel.

[0011] A nozzle mechanism, the nozzle mechanism including at least a nozzle, the rod of the nozzle passing through the top mounting port and communicating with the control chamber;

[0012] A water pipe mechanism is assembled in the mounting cavity and communicates with the water inlet chamber through the bottom mounting port.

[0013] Preferably, the nozzle mechanism further includes a locking assembly, which includes a locking member and a second elastic reset member. The locking member is fitted into the mounting cavity via the second elastic reset member and is repositionably locked to the rod of the nozzle. The locking member has a pressing portion that extends outside the handle housing for pressing to unlock. The rod of the nozzle has a locking groove that mates with the locking member.

[0014] Preferably, the lock includes a lock body and a locking rib, the lock body having a first lock hole through which the rod passes, and the locking rib being disposed on the inner wall of the first lock hole and corresponding to the lock groove.

[0015] Preferably, the control valve core includes:

[0016] A valve core body having a radially gradually changing curved surface, wherein the force-applying part is implemented as the curved surface;

[0017] The control component includes a first arc-shaped tooth segment and a first straight tooth segment. The first arc-shaped tooth segment is disposed on the valve core body and located outside the mounting port. The first straight tooth segment meshes with the first arc-shaped tooth segment to drive the valve core body to rotate within the control chamber. The curved surface is gradually subjected to force on the force-receiving part by the rotation of the valve core body.

[0018] Preferably, the curved surface is provided with a positioning groove for the force-bearing part to engage, and when the force-bearing part is engaged in the positioning groove, the blocking and sealing body remains in the open state of the communication channel.

[0019] Preferably, the force-receiving part is implemented as a force-receiving rod, which passes through the connecting channel and is force-applied by the force-applying part to drive the blocking and sealing body to open the connecting channel.

[0020] Preferably, the connecting channel includes a through hole and several connecting holes; the force-bearing rod is inserted into the through hole and is force-applied by the force-applying part; the connecting holes connect the control chamber and the water inlet chamber and are repositionably sealed by the blocking sealing body through the first elastic reset member.

[0021] Preferably, the blocking sealing body is provided with a first blocking sealing ring near the connecting hole, and the first blocking sealing ring is repositionably sealed to the connecting hole along with the blocking sealing body through a first elastic reset member.

[0022] Preferably, the top of the blocking sealing body can be sealed in the perforation, and / or, a contact seal is formed between the force-bearing rod and the perforation.

[0023] Preferably, the nozzle rod is connected to the valve seat via an elastic seal, the elastic seal is disposed within the valve seat, the rod is inserted into the valve seat and locked by the locking member, and the elastic seal applies a rebound force to the rod after the rod is unlocked.

[0024] Preferably, the water flow switch control mechanism further includes an installation branch pipe, which has an installation bracket inside. One end of the installation branch pipe is connected to the water inlet cavity, and the other end is connected to the water pipe mechanism. The first elastic reset element is a spring, which is installed between the installation bracket and the blocking sealing body.

[0025] Preferably, the water pipe mechanism includes at least a core and a water pipe; the core has a liquid flow channel inside and has a core inlet and a core outlet at both ends that communicate with the liquid flow channel; the water pipe is connected to the core inlet and the core outlet is inserted into the installation branch pipe.

[0026] Preferably, the handle housing is integrally formed; or, the handle housing includes a first housing and a second housing, the first housing and the second housing being snap-fitted together to form the handle housing.

[0027] Preferably, the core is rotatably mounted within the handle housing via a snap-fit ​​assembly; the snap-fit ​​assembly includes:

[0028] The first card interface is located on the inner wall of the first housing;

[0029] The second card interface is located on the inner wall of the second housing and forms a limiting card hole with the first card interface;

[0030] The first annular groove is disposed around the tube core and is engaged in the limiting hole and rotates along the self-axis of the tube core.

[0031] Preferably, the die is detachably inserted into the handle housing via a limiting component; the limiting component includes:

[0032] A cantilever arm is disposed inside the handle housing, and a limit switch key is provided on the cantilever arm;

[0033] A limiting protrusion is provided on the outer wall of the tube core. The limiting protrusion has a limiting groove that cooperates with the limiting key. The limiting groove engages with the limiting key as the tube core rotates after being inserted into the handle housing.

[0034] The above technical solutions, individually or in combination, exhibit the following beneficial effects:

[0035] The blocking and sealing body seals the channel between the water inlet chamber and the control chamber through the first elastic reset element, which can completely isolate and block the water flow. When in use, the blocking and sealing body is forced by driving the control valve core, and the channel is opened after the blocking and sealing body is opened to realize the connection between the two chambers. This enables the connection between the nozzle mechanism and the water pipe mechanism, which are respectively connected to the two chambers, for oral cleaning. The structure is simple to assemble, easy to operate, and can block the water flow without leakage.

[0036] This structure is fully assembled, simple in structure and easy to assemble and disassemble;

[0037] In the blocked state, even if there is a liquid level difference between the water inlet chambers of the main unit and the handle, the pressure formed by the liquid in the water inlet chamber on the blocking sealing body can better seal the connecting channel, forming a positive effect. Therefore, there is no risk of water leakage / dripping after the handle is lower than the water level in the main unit for a long time.

[0038] The force-applying part of the valve core body is a curved surface with a gradually changing diameter. When the valve core body rotates, the diameter of the curved surface near the force-applying part gradually increases, gradually pressing the blocking and sealing body, so that the blocking and sealing body opens the communication channel. The process is smooth and convenient.

[0039] A positioning slot is provided at the point where the curved pressing force-bearing part can open the connecting channel, so that the force-bearing part can be locked in the positioning slot through the elastic support of the first elastic reset member, keeping the connecting channel open, which facilitates the continuous flow of water and makes it convenient for users to perform continuous oral cleaning operations.

[0040] The control components achieve pure mechanical transmission through direct meshing of gear segments, eliminating the need for electrical structures on the handle, making it cost-effective and providing intuitive and efficient control.

[0041] The water pipe mechanism is installed via a snap-fit ​​assembly and can rotate relative to the handle housing, making it easy to adjust the direction of the nozzle on the handle and convenient for the user.

[0042] The water pipe mechanism is installed via a limiting component. During assembly, insert the core of the water pipe mechanism and rotate it, accompanied by a "click" feedback sound. The core is engaged with the handle housing via the limiting component. To disassemble, simply pull it out by reversing the direction of rotation. It is convenient and quick. Attached Figure Description

[0043] Figure 1 A schematic diagram illustrating the structure of the present invention is shown.

[0044] Figure 2 The diagram shows the structural disassembly of the present invention.

[0045] Figure 3 The exploded view of the structure of the present invention is shown.

[0046] Figure 4 An exploded view of the water flow switch control mechanism in this invention is shown.

[0047] Figure 5 The diagram shows the main structural view of the water flow switch control mechanism in this invention.

[0048] Figure 6 It expresses Figure 5 Sectional view at point AA.

[0049] Figure 7 This diagram illustrates the structural relationship between the blocking sealing body and the control valve core in the water flow switch control mechanism of this invention.

[0050] Figure 8 The diagram illustrates the structural relationship of the control components in this invention.

[0051] Figure 9 This diagram illustrates the structure of the branch pipe installation in this invention.

[0052] Figure 10 This is a side view of the structure after the water pipes have been removed in this invention.

[0053] Figure 11 Expressed with Figure 10 A cross-sectional view of the water flow blocking structure at point BB.

[0054] Figure 12 It expresses Figure 11 A stereoscopic view.

[0055] Figure 13 It expresses Figure 12 Enlarged view of the middle section.

[0056] Figure 14 Expressed with Figure 10 A cross-sectional view of the middle BB section showing the state of the water flow connectivity structure.

[0057] Figure 15 It expresses Figure 14 Enlarged view of the middle section.

[0058] Figure 16 This diagram illustrates the structure of the nozzle mounted on the valve seat via a locking assembly in this invention.

[0059] Figure 17 This is a schematic diagram illustrating one perspective of the locking component in this invention.

[0060] Figure 18 This diagram illustrates another perspective of the locking component in this invention.

[0061] Figure 19 This diagram illustrates the structure of the core tube in this invention, which is mounted to the handle housing via a snap-fit ​​assembly.

[0062] Figure 20 This diagram illustrates the structure of the core tube installed on the handle housing via a limiting component in this invention.

[0063] Figure 21 This diagram illustrates the structural assembly of the core tube in this invention, which is mounted on the handle housing via a limiting component.

[0064] Figure 22 This diagram illustrates the structural appearance of the core tube in this invention, which is mounted on the handle housing via a limiting component.

[0065] Figure 23 Expressed with Figure 22 A cross-sectional view at the CC section shows a schematic diagram of the limiting protrusion and the cantilever not being engaged.

[0066] Figure 24 Expressed with Figure 22 The cross-sectional view at the CC section shows a schematic diagram of the limiting protrusion and the cantilever engagement.

[0067] The components include: handle housing 1; first housing 11; second housing 12; top mounting port 13; bottom mounting port 14; water flow switch control mechanism 2; valve seat 21; water inlet chamber 211; control chamber 212; valve core mounting port 2121; water outlet chamber 213; through hole 2141; connecting hole 2142; control valve core 22; valve core body 221; force application part 2211; positioning groove 2212; first spindle sealing ring 2213; first spindle sealing groove 2213. 214; Second spindle sealing ring 2215; Second spindle sealing groove 2216; Mounting end plate 2217; Control component 222; First arc-shaped toothed segment 2221; First straight toothed segment 2222; Push button 2223; Housing mounting port 2224; Blocking seal 23; Blocking seal body 231; Force-bearing part 2311; First blocking seal ring 2312; First elastic reset element 232; Mounting branch pipe 24; Mounting bracket 241; Nozzle mechanism 3; Nozzle 31; Rod body 311; Annular locking groove 312; Locking assembly 32; Lock 321; Lock body 3211; First locking hole 32111; Locking rib 3212; Second elastic reset member 322; Pressing part 323; Guide part 324; Elastic seal 33; Water pipe mechanism 4; Pipe core 41; Pipe core snap-fit ​​protrusion 411; First pipe core sealing groove 412; First pipe core sealing ring 413; Second pipe core sealing groove 414; Connecting rigid pipe 415 ; Conical part 416; Water pipe 42; First snap-fit ​​plate 431; First snap-fit ​​interface 4311; Second snap-fit ​​plate 432; Second snap-fit ​​interface 4321; Limiting ring rib 433; First annular groove 434; First ring rib 435; Cantilever 441; Limiting snap-fit ​​key 4411; Limiting protrusion 442; Limiting snap-fit ​​groove 4421; Guide groove 443; Limiting snap-fit ​​plate 444; Stop 445; Mating curved surface 4451; Protective bottom shell 46; Bottom shell snap-fit ​​hole 461. Detailed Implementation

[0068] The preferred embodiments described below are merely examples, and other obvious variations will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0069] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0070] In this embodiment, "circumference" is defined as the distance from any point on the curved surface to the rotation axis of the valve core body 221. The purpose is to describe the gradually expanding outward structure of the curved surface to achieve a gradual force application to the blocking sealing body 231. "Depth direction" is defined as the insertion direction of the nozzle 31 into the water outlet pipe 42 of the water flosser. "Self-axis" is defined as the axis of the nozzle 31 rod 311 along the length direction, which is the reference axis of rotation.

[0071] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 This embodiment provides an assembled water flosser handle with a water flow switch, including a handle housing 1, a water flow switch control mechanism 2, a nozzle mechanism 3, and a water pipe mechanism 4. The water pipe mechanism 4 and the nozzle mechanism 3 are respectively connected to the water flow switch control mechanism 2. The handle housing 1 covers these structures for protection and provides a grip for the user. When the water flow switch control mechanism 2 is open, the water pipe mechanism 4 transmits the pulsed water flow from the water flosser main unit to the nozzle mechanism 3 for spraying. When the control valve mechanism is closed, the transmission between the water pipe mechanism 4 and the nozzle mechanism 3 is interrupted, and there is no leakage caused by the pressure difference between the residual water in the water pipe mechanism 4 and the water level in the water flosser main unit.

[0072] Specifically, the handle housing 1 has an internal mounting cavity, a top mounting opening 13, and a bottom mounting opening 14. In this embodiment, the handle housing 1 includes a first housing 11 and a second housing 12, which are fixed together by snap-fitting. This is a conventional design for a water flosser handle and will not be described in detail.

[0073] Please see Figure 3 and combined Figures 4-7The flow switch control mechanism 2 is assembled in the mounting cavity. The flow switch control mechanism 2 includes at least a valve seat 21, a control valve core 22, and a blocking seal 23. The valve seat 21 contains at least an inlet chamber 211 and a control chamber 212, which are connected by a connecting channel. The control chamber 212 has a valve core mounting port 2121. The control valve core 22 is disposed in the control chamber 212 through the valve core mounting port 2121. The control valve core 22 has a force-applying part 2211, which applies force to the inlet chamber 211 in a controllable manner by the control valve core 22. The blocking seal 23 includes a blocking seal body 231 and a first elastic reset member 232. The blocking seal body 231 is disposed in the water inlet chamber 211 and is repositionably blocked in the communication channel by the first elastic reset member 232. The blocking seal body 231 has a force-receiving part 2311 that is subjected to force by a force-applying part 2211 through the communication channel. After the blocking seal body 231 is subjected to force by the force-receiving part 2311, it moves to open the communication channel. Figure 15 The state described.

[0074] The nozzle mechanism 3 and the water pipe mechanism 4 serve as the oral cleaning component and the water inlet component, respectively, and the connection between them is controlled by the water flow switch control mechanism 2. Specifically, the nozzle mechanism 3 is connected to the control chamber 212 through the top mounting port 13, and the water pipe mechanism 4 is connected to the water inlet chamber 211 and the main unit of the oral irrigator through the bottom mounting port 14.

[0075] Please combine Figure 16 , Figure 17 and Figure 18 The nozzle mechanism 3 is mounted on the valve seat 21 through the top mounting port 13, and the nozzle mechanism 3 includes at least a nozzle 31. The rod 311 of the nozzle 31 passes through the top mounting port 13 and connects to the control chamber 212. In this embodiment, the valve seat 21 in the water flow switch control mechanism 2 is the core component. The top is mounted on the nozzle 31 and the bottom is mounted on the water pipe mechanism 4, making the overall structure linear and facilitating the design and flow of the water circuit. In this embodiment, the blocking sealing body 231 blocks the channel between the water inlet chamber 211 and the control chamber 212 through the first elastic reset member 232, which can completely isolate and block the water flow. In use, the blocking sealing body 231 is forced by the drive control valve core 22, and the channel is opened after the blocking sealing body 231 is opened to realize the connection between the two chambers, thereby realizing the connection between the nozzle 31 and the water pipe mechanism 4, which are respectively connected to the two chambers, for oral cleaning. The structure is simple, the operation is convenient, and it can block the water flow without leakage.

[0076] The above solutions are the basic necessities for implementing this embodiment. The following is a further detailed description in conjunction with the accompanying drawings and specific implementation methods:

[0077] Please see Figure 1 , Figure 2 and combined Figure 4 The nozzle 31 is connected to the control chamber 212 through the top mounting port 13, which can be either direct or indirect. In the direct form, the control chamber 212 has a mounting port for the nozzle 31, and the nozzle 31 can be directly installed into the mounting port. As a preferred embodiment of this example, the valve seat 21 further includes a water outlet chamber 213, which is directly connected to the control chamber 212 and is installed with the nozzle 31 as an indirect extension of the control chamber 212.

[0078] Furthermore, the nozzle mechanism 3 also includes a locking assembly 32. The rod 311 of the nozzle 31 is inserted into and communicates with the control chamber 212, and the rod 311 has a locking groove 312. The locking assembly 32 includes a locking member 321 and a second elastic reset member 322. The locking member 321 is assembled into the mounting cavity via the second elastic reset member 322 and is repositionably locked in the locking groove 312. The locking member 321 has a pressing part 323 that extends outside the handle housing 1 for pressing to unlock. The nozzle mechanism 3 will be described in detail later in conjunction with the valve seat structure.

[0079] Please see Figure 2 and combined Figures 10-13 To facilitate the removal of the nozzle 31 rod 311 from the water outlet chamber 213, a preferred embodiment of this invention includes an elastic seal 33 within the water outlet chamber 213. This elastic seal 33 has a sealing through-hole for water flow, and an elastic portion is formed at the contact point between the top of the elastic seal 33 and the rod 311. When the rod 311 is inserted into the water outlet chamber 213 of the valve seat 21 and locked by the locking member 321, the elastic seal 33 applies a rebound force to the rod 311 after unlocking, meaning the elastic portion deforms under pressure and possesses elastic potential energy. When the rod 311 is unlocked, the force exerted on the rod 311 by the locking component 32 in the depth direction is released, and the elastic potential energy is converted into kinetic energy, allowing the rod 311 to be ejected for easy removal of the nozzle 31. Preferably, the elastic seal 33 is made of plastic resin, the elastic portion is formed of plastic resin, and elastic potential energy is generated by the deformation of the plastic resin. The structure of the elastic seal 33 and the elastic part is not limited here. It is only necessary to have a sealing body and a sealing through hole that are in seal with the rod 311, and to be able to produce elastic deformation at the point where the rod 311 is pressed.

[0080] Please see Figure 4 The control valve core 22, as the core control component, includes a valve core body 221 and a control assembly 222. The valve core body 221 applies a force to the blocking sealing body 231 by rotating, causing the blocking sealing body 231 to open the communication channel (i.e., Figure 15 In the state of rotation of the valve core body 221, the force is removed, and the blocking sealing body 231 is reset under the action of the first elastic reset member 232 to block the communication channel again (i.e., Figure 13 (State). The control component 222 allows the user to mechanically control the rotation of the valve core 22 body.

[0081] For details, please refer to Figure 7 and Figure 8 and combined Figure 2 and Figure 3 The valve core body 221 has a gradually changing curved surface, and the force-applying part 2211 is implemented as this curved surface. The control component 222 includes a first arc-shaped tooth segment 2221 and a first straight tooth segment 2222. The first arc-shaped tooth segment 2221 is provided on the valve core body 221 and located outside the valve core mounting port 2121. The first straight tooth segment 2222 meshes with the first arc-shaped tooth segment 2221 to drive the valve core body 221 to rotate within the control chamber 212. The curved surface is gradually force-applied to the force-receiving part 2311 by the rotation of the valve core body 221.

[0082] To facilitate user operation, a housing mounting port 2224 is provided on the handle housing. The first linear toothed segment 2222 is mounted on a push button 2223, which is located inside the housing mounting port 2224. Specifically, the position of the housing mounting port 2224 corresponds to the valve core. The user activates the engagement between the first arc-shaped toothed segment 2221 and the first linear toothed segment 2222 by pushing the button 2223.

[0083] Furthermore, please combine Figure 7 and Figure 8 The shape of the valve core body 221 is not unique in this embodiment. As a preferred embodiment, the control chamber 212 on the valve seat 21 is a through hole, which is defined as the cavity of the through hole. The valve core body 221 is a mandrel inserted into the through hole. The two ends of the mandrel are respectively provided with a first mandrel sealing groove 2214 and a second mandrel sealing groove 2216. A first mandrel sealing ring 2213 is provided in the first mandrel sealing groove 2214, and a second mandrel sealing ring 2215 is provided in the second mandrel sealing groove 2216, thereby sealing the two ends of the through hole. The mandrel will not cause water leakage when rotating, and a space for water flow is formed between the mandrel and the inside of the through hole. The mandrel also has a curved surface structure with a gradually increasing diameter. As mentioned above, the diameter is interpreted as the distance from any curved surface on the curved surface structure to the axis of rotation of the mandrel. As the mandrel rotates, the curved surface of the mandrel slowly approaches the force-receiving part 2311 until it contacts and applies force. Pressing the force-receiving part 2311 causes the blocking and sealing body 231 to open the communication channel. Preferably, the mandrel structure can be implemented as a whistle type, and the curved surface is implemented as the outer surface of the mandrel.

[0084] Furthermore, the first arc-shaped tooth segment 2221 is mounted on one end of the spindle via a mounting end plate 2217, and works in conjunction with the first straight tooth segment 2222 to drive the spindle to rotate.

[0085] Please see Figure 7 and Figure 8 Because the curved surface applies force gradually, under the elastic reaction force of the first elastic reset member 232, the user needs to maintain the pressed state of the curved surface on the force-bearing part 2311, which is sufficient to complete the valve core control of this embodiment. However, in order to further facilitate the user, as a preferred embodiment, the curved surface is provided with a positioning groove 2212 for the force-bearing part 2311 to be engaged. When the force-bearing part 2311 is engaged in the positioning groove 2212, the blocking sealing body 231 remains in the open communication channel state. Specifically, when the spindle rotates to open the blocking sealing body 231, the first elastic reset member 232 deforms under force until the positioning groove 2212 of the spindle engages the force-bearing part 2311. At this time, the force-bearing part 2311 can remain in the open communication channel state without external force. To block the communication channel, simply rotate the spindle to disengage the force-bearing part 2311 from the positioning groove 2212.

[0086] In this embodiment, the force-receiving part 2311 is not limited to a specific shape; its purpose is to be moved by the force-applying part 2211, so there is no specific limitation in its shape. As a preferred embodiment of this invention, the force-receiving part 2311 is implemented as a force-receiving rod. The force-receiving rod passes through the connecting channel and is forced by the force-applying part 2211 to drive the blocking sealing body 231 to open the connecting channel.

[0087] The connecting channel serves as a passageway connecting the water inlet chamber 211 and the control chamber 212. In this embodiment, two forms are provided:

[0088] 1. The connecting channel is a single through hole, and the diameter of the connecting channel is larger than the diameter of the force-bearing rod, so that even if the force-bearing rod is pushed down by the force-applying part 2211 after being inserted into the connecting channel, the water flow transmission will not be affected. At this time, in the blocking state, the top of the blocking sealing body 231 can be used to seal the connecting channel; in the connecting state, the blocking sealing body 231 opens the connecting channel, and although the force-bearing rod is inserted into the connecting channel, the water flow transmission is not affected.

[0089] II. Please refer to Figure 5 , Figure 6 and Figure 7 The connecting channel includes a through hole 2141 and several connecting holes 2142. A force-bearing rod is inserted into the through hole 2141 and subjected to force by the force-applying part 2211. The connecting holes 2142 connect the control chamber 212 and the water inlet chamber 211 and are repositionably sealed by the blocking sealing body 231 through the first elastic reset member 232. Furthermore, the blocking sealing body 231 is provided with a first blocking sealing ring 2312 near the connecting hole 2142. The first blocking sealing ring 2312, along with the blocking sealing body 231, repositionably seals the connecting channel through the first elastic reset member 232.

[0090] The force-bearing rod enters the control chamber 212 through the perforation 2141 and contacts the control valve core 22. To ensure that the perforation 2141 effectively blocks water flow, the top of the blocking sealing body 231 can be sealed within the perforation 2141, or a contact seal can be formed between the force-bearing rod and the perforation 2141 (i.e., there is no gap between them). Furthermore, to achieve the best sealing effect, the top of the blocking sealing body 231 can be sealed within the perforation 2141, and a contact seal can be formed between the force-bearing rod and the perforation 2141.

[0091] Please see Figure 4 and Figure 9 The first elastic reset member 232 serves as a structural component capable of resetting the blocking and sealing body 231. The first elastic reset member 232 can be installed at the bottom of the inner wall of the water inlet chamber 211. However, to improve the stability of the first elastic reset member 232, in a preferred embodiment of this invention, the control valve mechanism further includes a mounting branch pipe 24. The mounting branch pipe 24 is provided with a mounting bracket 241. One end of the mounting branch pipe 24 is connected to the water inlet chamber, and the other end is connected to the water supply pipe mechanism 4. The first elastic reset member 232 is disposed between the mounting bracket 241 and the blocking and sealing body 231.

[0092] Furthermore, the first elastic reset element 232 is a spring, installed between the mounting bracket 241 and the blocking sealing body 231. Preferably, the mounting bracket 241 is a cross-shaped bracket located inside the mounting branch pipe 24, which can provide installation support while facilitating water flow.

[0093] Please see Figures 16-18 The nozzle 31 and the valve seat 21 are connected by a top mounting port 13. The nozzle 31 can be disassembled and assembled via the locking assembly 32, the handle housing 1, and the valve seat 21.

[0094] Specifically, the rod 311 of the nozzle 31 is rotatably inserted into and connected to the valve seat 21 of the irrigator, and the locking groove is implemented as an annular locking groove 312 provided on the side of the rod 311. The second elastic reset member 322 is provided between the locking member 321 and the inner wall of the handle housing 1. The locking member 321 is resettled and locked in the annular locking groove 312 to prevent the rod 311 from being pulled out of the valve seat 21. The locking member 321 has a pressing part 323, which extends outside the housing for pressing. The locking member 321 is unlocked / locked in the annular locking groove 312 by pressing the second elastic reset member 322 to deform / reset. When the rod 311 of the nozzle 31 is inserted into the valve seat 21 and the locking member 321 is locked in the annular locking groove 312, due to the annular structure of the annular locking groove 312, the locking member 321 and the annular locking groove 312 can rotate relative to each other in the circumferential direction, but the vertical rotation of the annular locking groove 312 is restricted. Therefore, although the nozzle 31 is restricted from being pulled out, its direction can be adjusted by rotating around its axis. When the pressing part 323 is pressed and the locking member 321 is displaced out of the annular locking groove 312, the nozzle 31 can be pulled out, and the second elastic reset member 322 resets and locks again.

[0095] The nozzle 31 has a sealing ring at the bottom of its rod 311, which is inserted into the valve seat 21 (specifically, the water outlet chamber 213 mentioned above). This is to illustrate that although the rod 311 is inserted into the valve seat 21, it can rotate freely along its own axis. In this embodiment, the locking member 321 is restrained by the handle housing 1 and the valve seat 21, limiting its movement in the depth direction. It can only move in the unlocking direction (or the deformation reset direction of the second elastic reset member 322), thus achieving the locking purpose. However, this should not be considered the only implementation method in this embodiment. Without considering cost economy, a guide rail structure can also be provided on the inner wall of the handle housing 1 to guide the locking member 321 and restrict its movement in the depth direction.

[0096] Please combine Figure 16 and Figure 17The locking element 321 engages with the annular locking groove 312. When the annular locking groove 312 rotates with the nozzle 31, although the locking element 321 and the annular locking groove 312 are restricted in the depth direction, the annular locking groove 312 can rotate relative to the locking element 321 in the axial direction. To improve the stability of this structure, the locking element 321 includes a locking element body 3211 and a locking rib 3212. The locking element body 3211 has a first locking element through hole 32111 through which the rod body 311 passes. The locking rib 3212 is provided on the inner wall of the first locking element through hole 32111 and corresponds to the annular locking groove 312. After the nozzle 31 passes through the first locking member through hole 32111, it is inserted into the valve seat 21 and pressed against the elastic seal 33 in the water outlet chamber 213. The position of the locking side rib 3212 corresponds to the annular locking groove 312 and is locked in the annular locking groove 312, thereby locking the nozzle 31 in the depth direction. After pressing, the locking member 321 is displaced, and the locking side rib 3212 leaves the annular locking groove 312, thereby unlocking the nozzle 31 in the depth direction. The nozzle 31 is bounced up by the rebound of the elastic part of the elastic seal, making it easy to remove.

[0097] Furthermore, the locking rib 3212 is locked to the side of the annular locking groove 312. It should be noted that the locking rib 3212 is a preferred embodiment, and other equivalent structures such as locking protrusions can also play an equivalent role and should also be included in this solution.

[0098] To facilitate pressing the pressing part 323 and its use by the operator, a first mounting port is provided on the handle housing 1, and the pressing part 323 extends into the first mounting port for pressing. The first mounting port is located on the second housing 12, not shown in the figure, but those skilled in the art should be able to recognize it. Furthermore, the pressing direction of the locking member 321 is perpendicular to the insertion direction of the nozzle 31, which can provide the user with a better user experience.

[0099] To improve the stability of the movement of the locking member 321, two second elastic reset members 322 are provided. The two second elastic reset members 322 are provided on both sides of the locking member 321 so that the locking member 321 can be evenly stressed during the reset process.

[0100] Furthermore, please combine Figure 16 and Figure 18 To improve the stability of the movement of the locking element 321, the locking element 321 also includes two guide portions 324. The locking element body 3211 is located above the valve seat 21, and the two guide portions 324 are disposed on the locking element body 3211 and located on both sides of the valve seat 21. Preferably, the guide portions 324 are guide plates, and the two guide plates clamp the valve seat 21 to guide the unlocking and locking of the locking element 321.

[0101] In this embodiment, the locking member 321 is reset by means of a second elastic reset member 322. Preferably, the second elastic reset member 322 is a spring. Other elastic reset members that can achieve the same effect as a spring are also within the scope of protection limited by this invention. Regarding the installation method of the second elastic reset member 322, this embodiment provides two implementation methods, as follows:

[0102] 1. The second elastic reset member 322 and the locking rib 3212 are located on the same side of the annular locking groove 312. The locking rib 3212 is unlocked / locked in the annular locking groove 312 by the compression / reset of the second elastic reset member 322. This embodiment is specifically described in this embodiment with the aid of the accompanying drawings. The essence of the second elastic reset member 322 is to store elastic potential energy by pressing, providing the kinetic energy required for the reset of the lock member 321. When it is on the same side as the lock member 321, it generates elastic potential energy by compression.

[0103] Second, the second elastic reset member 322 and the locking rib 3212 are located on opposite sides of the annular locking groove 312, and the second elastic reset member 322 is connected between the locking member and the inner wall of the handle housing 1. The locking rib 3212 is unlocked / locked in the annular locking groove 312 by stretching / resetting the second elastic reset member 322. The essence of the second elastic reset member 322 is to store elastic potential energy by pressing, providing the kinetic energy required for the reset of the locking member 321. When it is on the opposite side of the locking member 321, it generates elastic potential energy by stretching. In this embodiment, the second elastic reset member 322 is as described above, and can be replaced by an elastic reset member that generates elastic potential energy by stretching, such as a rubber band or elastic rubber tube.

[0104] Please see Figures 19-21 and combined Figure 3 The water pipe mechanism 4 includes a core 41 and a water pipe 42. The core 41 includes an outlet and an inlet, and an internal liquid flow channel. The core 41 is directly or indirectly inserted into the inlet chamber 211 of the valve seat 21. Specifically, when the branch pipe 24 is installed, the branch pipe 24 is ultrasonically sealed to the inlet chamber 211 of the valve seat 21. The core 41 is inserted into the branch pipe 24 through the bottom mounting port 14, and the bottom of the core 41 is provided with a connecting rigid pipe 415, on which the water pipe 42 is sleeved. When the branch pipe 24 is not required, the core 42 can be directly inserted into the inlet chamber 211.

[0105] It should be noted that, please refer to Figure 19 Whether inserted into the inlet chamber 211 or installed in the branch pipe 24, the core 41 is provided with a first core sealing groove 412 near the outlet, and a first core sealing ring 413 is provided in the groove for sealing. More preferably, the core 41 is also provided with a second core sealing groove 414 near the outlet, and a second core sealing ring is provided in the groove.

[0106] Furthermore, the connecting rigid tube 415 is also provided with a tapered part 416 for easy connection.

[0107] The water pipe 42 is fitted onto the pipe core 41 and is secured in the bottom mounting port 14 for stable installation. Furthermore, this embodiment also includes a protective bottom shell 46 to protect the connection between the water pipe 42 and the pipe core 41. Specifically, the top of the protective bottom shell 46 has a sleeve interface. When the water pipe 42 is fitted onto the connecting rigid pipe 415, the sleeve interface of the protective bottom shell 46 is protectively fitted onto the pipe core 41. At this time, the bottom mounting port 14 is implemented as an opening at the bottom of the protective bottom shell 46 for the water pipe 42 to pass through.

[0108] Furthermore, the protective bottom shell 46 is also provided with a bottom shell snap-fit ​​hole 461, and the bottom of the tube core 41 is also provided with a tube core snap-fit ​​protrusion 411. After the protective bottom shell 46 is sleeved on the tube core 41, the bottom shell snap-fit ​​hole 461 and the tube core snap-fit ​​protrusion 411 are snapped and fixed. It can be pulled out directly when disassembling.

[0109] In this embodiment, the handle housing can be integrally formed. Alternatively, as shown in this embodiment, it can be formed by splicing. Specifically, the handle housing includes a first housing 11 and a second housing 12, which are snapped together to form the handle housing 1.

[0110] In this embodiment, two implementation methods are provided for the installation of the water pipe mechanism 4 and the handle housing 1, assuming that the core 41 is inserted and connected to the installation branch pipe 24 or the valve seat 21. The following is a detailed description with reference to the accompanying drawings, assuming that the core 41 is inserted and connected to the installation branch pipe 24:

[0111] First option: Please refer to Figure 19 and combined Figure 16 The core 41 is rotatably mounted inside the handle housing 1 via a snap-fit ​​assembly.

[0112] Specifically, the snap-fit ​​assembly includes a first snap-fit ​​interface 4311, a second snap-fit ​​interface 4321, and a first annular groove 434. The first snap-fit ​​interface 4311 is located on the inner wall of the first housing 11, and the second snap-fit ​​interface 4321 is located on the inner wall of the second housing 12, forming a limiting snap-fit ​​hole with the first snap-fit ​​interface 4311. The first annular groove 434 is annularly disposed around the core 41 and is snapped into the limiting snap-fit ​​hole, rotating along the axis of the core 41. The limiting snap-fit ​​hole is formed by the assembly of the first housing 11 and the second housing 12. Specifically, the inner wall of the first housing 11 has a first snap-fit ​​plate 431, and the first snap-fit ​​interface 4311 is implemented as a first recess on the first snap-fit ​​plate 431; the inner wall of the second housing 12 has a second snap-fit ​​plate 432, and the second snap-fit ​​interface 4321 is implemented as a second recess on the second snap-fit ​​plate 432. Further, the first and second recesses are semi-circular recesses. More preferably, the first notch and the second notch are joined together to form a limiting hole, the inner diameter of which is adapted to the outer diameter of the first annular groove 434, so that the first annular groove 434 is tightly locked by the first notch and the second notch.

[0113] As described above, the top of the core 41 is inserted into the valve seat 21, and a first annular groove 434 is provided relative to the bottom position, with the insertion direction movement restricted by a limiting hole. The depth of the core 41 inserted into the mounting branch pipe 24 affects the relative position of the first annular groove 434 and the limiting hole. In this embodiment, a preferred embodiment to solve this problem is that a limiting ring rib 433 is also provided on the outer wall of the core 41. The limiting ring rib 433 is limited and abuts against the insertion port of the mounting branch pipe 24. When the core 41 is inserted into the mounting branch pipe 24 until the limiting ring rib 433 abuts against the insertion port at the bottom end of the mounting branch pipe 24, the position of the first annular groove 434 is directly aligned with the position of the limiting hole.

[0114] Furthermore, the first annular groove 434 is implemented as a clamping groove between two first annular ribs 435. Specifically, two first annular ribs 435 are provided at a distance from the outer wall of the core 41, and the first annular groove 434 is formed between the two first annular ribs 435, and the two first annular ribs 435 can better lock the limiting hole in the depth direction.

[0115] The second option: Please refer to [link / reference] Figures 20-24 The core tube 41 is detachably inserted into the handle housing 1 via a limiting component.

[0116] Specifically, the limiting component includes a cantilever 441 and a limiting protrusion 442. The cantilever 441 is located inside the handle housing 1 and has a limiting key 4411 on it. The limiting protrusion 442 is located on the outer wall of the core tube 41 and has a limiting groove 4421 that mates with the limiting key 4411. The limiting groove 4421 engages with the limiting key 4411 as the core tube 41 rotates after being inserted into the handle housing 1.

[0117] Regarding the installation relationship between the limit key 4411 and the limit slot 4421 relative to the handle housing 1 and the core 41, this embodiment has two implementation methods: the limit key 4411, the limit slot 4421 and the handle housing 1 and the core 41 can be installed in a cross-installation relationship.

[0118] The outer wall of the core 41 is provided with a limiting protrusion 442, and the inner wall of the handle housing 1 is provided with a cantilever 441. The limiting protrusion 442 and the cantilever 441 are the structural carriers of the limiting slot 4421 and the limiting key 4411, specifically:

[0119] 1. A limit slot 4421 is provided on a limit protrusion 442, and a limit key 4411 is provided on a cantilever 441;

[0120] 2. The limit key 4411 is set on the limit protrusion 442, and the limit slot 4421 is set on the cantilever 441.

[0121] This embodiment is described in detail with reference to the first implementation form and accompanying drawings.

[0122] The core tube 41 has a corresponding insertion relationship with the handle housing 1. This is to facilitate the insertion of the core tube 4121 into the mounting support tube 24 inside the handle housing 1, and also to ensure that the limiting protrusion 442 can be inserted into a designated position to facilitate the engagement of the limiting latch 4411 on the cantilever 441. As a preferred embodiment of this work, please refer to... Figure 20 , Figure 23 and Figure 24 The handle housing 1 is provided with a guide groove 443 for the insertion of the limiting protrusion 442. The guide groove 443 is located on one side of the cantilever 441. When the limiting slot 4421 and the limiting key 4411 of the limiting component are engaged, the guide end of the guide groove 443 is lower than the limiting component. This is to ensure that the limiting protrusion 442 is disengaged from the guide groove 443 when it rotates and engages with the limiting key 4411, and is not restricted from rotating.

[0123] Furthermore, in a preferred embodiment of this first example, there are two limiting protrusions 442, located on opposite side walls of the core 41. Correspondingly, there are two cantilever arms 441, located on the inner wall of the handle housing 1, with their positions corresponding to the two limiting protrusions 442. Preferably, in this embodiment, the handle housing 1 is formed by a first housing 11 and a second housing 12 assembled and fixed together, with the two cantilever arms 441 correspondingly located on the first housing 11 and the second housing 12.

[0124] The cantilever 441 is made of plastic. When it is squeezed by the limiting protrusion 442, it can undergo a slight deformation, causing the limiting protrusion 442 to be locked by the limiting key 4411 on the cantilever 441, preventing it from rotating out naturally. The user needs to rotate the core tube 41 with external force to retract it.

[0125] When the core 41 is inserted into the mounting branch pipe 24 and rotates to engage with the cantilever 441, the engagement action of the limiting key 4411 and the limiting groove 4421 restricts the core 41's rotation in the axial direction and its rotation in the depth direction. To improve the restriction in the depth direction, as a preferred embodiment, the handle housing 1 has a limiting plate 444 below the cantilever 441 that restricts the core 41 from being pulled out. This further prevents the core 41 from being pulled out in this state. The limiting plate 444 does not conflict with the guide groove 443, and the core 41 can be pulled out after rotating back and is released from the restriction of the limiting plate 444 in the depth direction.

[0126] When there are two limiting protrusions 442 and cantilever 441, the limiting plate 444 is adapted to be positioned on the first housing 11 and the second housing 12. Of course, it is not necessarily implemented as a plate; the limiting plate 444 is intended to prevent the core 41 from being pulled out in the depth direction during snap-fit ​​assembly. Other functional components that can achieve this effect, regardless of their shape, should be included.

[0127] Please combine Figure 20 , Figure 21 , Figure 23 and Figure 24 After the core 41 and the cantilever 441 are engaged, to prevent excessive force from causing the engagement to detach, the handle housing 1 near the limiting component is also provided with a stop 445 to prevent the limiting key 4411 from over-fitting and disengaging from the limiting groove 4421. The stop 445 has a mating curved surface 4451 that mates with the outer wall of the core 41. Preferably, when there are two limiting protrusions 442 and two cantilever 441, the number of stop 445s corresponds to the number of cantilever 441s, and they are respectively located in the first housing 11 and the second housing 12. The mating curved surface 4451 fits against the outer wall of the core 41, which also helps to stabilize the core 41.

[0128] The above technical solutions, individually or in combination, exhibit the following beneficial effects:

[0129] The blocking and sealing body 231 blocks the channel between the water inlet chamber 211 and the control chamber 212 through the first elastic reset member 232, which can completely isolate and block the water flow. When in use, the blocking and sealing body 231 is forced by the drive control valve core 22. After the blocking and sealing body 231 is opened, the channel is opened to connect the two chambers, thereby realizing the connection between the nozzle mechanism 3 and the water pipe mechanism 4, which are respectively connected to the two chambers, for oral cleaning. The structure is simple, the operation is convenient, and it can block the water flow without leakage.

[0130] In the blocked state, even if there is a liquid level difference between the water inlet chamber 211 of the main body and the handle of the water flosser, the pressure formed by the liquid in the water inlet chamber 211 on the blocking sealing body 231 can better seal the connecting channel and form a positive effect. Therefore, there is no risk of water leakage / dripping after the handle is lower than the water level in the main body for a long time.

[0131] The force-applying part 2211 of the valve core body 221 is a curved surface with a gradually changing diameter. When the valve core body 221 rotates, the diameter of the curved surface near the force-applying part 2311 gradually increases, gradually pressing the blocking and sealing body 231, so that the blocking and sealing body 231 opens the communication channel. The process is smooth and convenient.

[0132] A positioning slot 2212 is provided at the point where the curved pressing force-receiving part 2311 can open the communication channel, so that the force-receiving part 2311 can be locked in the positioning slot 2212 through the elastic support of the first elastic reset member 232, keeping the communication channel open, which facilitates the continuous flow of water and makes it convenient for users to perform continuous oral cleaning operations.

[0133] The control component 222 achieves pure mechanical transmission through direct meshing of gear segments, eliminating the need for an electrical structure in the handle, making it cost-effective and providing intuitive and efficient control.

[0134] The water pipe mechanism 4 is installed via a snap-fit ​​assembly and can rotate relative to the handle housing 1, making it convenient to adjust the direction of the nozzle 31 on the handle and facilitating user operation.

[0135] The water pipe mechanism 4 is installed via a limiting component. During assembly, insert the core 41 of the water pipe mechanism 4 and rotate it. A "click" feedback sound will be heard as the core 41 is engaged with the handle housing 1 via the limiting component. Disassembly is quick and easy; simply pull it out by reversing the direction of rotation.

[0136] Those skilled in the art should understand that the embodiments of the present invention described above are merely examples and do not limit the invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the implementation of the present invention may be made without departing from the stated principles.

Claims

1. A kit mouthpiece for a waterpik having a water flow switch, characterized in that, The utility model relates to a handle casing, which is internally formed with a mounting cavity, a top portion formed with a top mounting opening, and a bottom portion formed with a bottom mounting opening. The water flow switch control mechanism is assembled in the mounting cavity and comprises at least: A valve seat, which is internally provided with at least a water inlet chamber and a control chamber, the water inlet chamber and the control chamber are communicated through a communication passage, and the control chamber is provided with a valve core mounting opening; A control valve core, which is arranged in the control chamber through the valve core mounting opening, the control valve core is provided with a force applying portion, the force applying portion is controllably applied force to the water inlet chamber by the control valve core, the control valve core comprises a valve core main body and a control assembly, the valve core main body is provided with a gradually changing curved surface, and the force applying portion is implemented as the curved surface; the control assembly comprises a first arc-shaped tooth segment and a first straight line tooth segment, the first arc-shaped tooth segment is arranged on the valve core main body and located outside the mounting opening, the first straight line tooth segment is engaged with the first arc-shaped tooth segment to drive the valve core main body to rotate in the control chamber, and the curved surface is gradually changed to apply force to the force receiving portion by the rotation of the valve core main body; A blocking seal, which comprises a blocking seal main body and a first elastic reset member, the blocking seal main body is arranged in the water inlet chamber and resetably sealed in the communication passage through the first elastic reset member, the blocking seal main body is provided with a force receiving portion applied force to the force applying portion through the communication passage, and the blocking seal main body moves to open the communication passage after being applied force to the force applying portion through the force receiving portion; A nozzle mechanism, which comprises at least a nozzle, the rod body of the nozzle passes through the top mounting opening and is communicated with the control chamber; A water pipe mechanism, which is assembled in the mounting cavity and communicated with the water inlet chamber through the bottom mounting opening. The nozzle mechanism further comprises a locking assembly, the locking assembly comprises a locking piece and a second elastic reset member, the locking piece is assembled in the mounting cavity and resetably locked to the rod body of the nozzle through the second elastic reset member, the locking piece is provided with a pressing portion, the pressing portion extends outside the handle casing for pressing unlocking, and the rod body of the nozzle is provided with a locking groove matched with the locking piece.

2. The assembled waterpik handle with water flow switch of claim 1, wherein, The locking piece comprises a locking piece main body and a locking edge rib, the locking piece main body is provided with a first locking piece through hole for the rod body to pass through, and the locking edge rib is arranged on the hole inner wall of the first locking piece through hole and corresponds to the locking groove.

3. The assembled waterpik handle with water flow switch of claim 2, wherein, The curved surface is provided with a positioning clamping groove for clamping the force receiving portion, and the blocking seal main body keeps the state of opening the communication passage when the force receiving portion is clamped in the positioning clamping groove.

4. The assembled waterpik handle with water flow switch of claim 1, wherein, The force receiving portion is implemented as a force receiving rod body, the force receiving rod body is applied force by the force applying portion through the communication passage to drive the blocking seal main body to open the communication passage.

5. The assembled waterpik handle with water flow switch of claim 4, wherein, The communication passage comprises a through hole and a plurality of communication holes; the force receiving rod body is inserted in the through hole and applied force by the force applying portion; the communication holes are communicated with the control chamber and the water inlet chamber and resetably sealed by the blocking seal main body through the first elastic reset member.

6. The assembled waterpik handle with water flow switch of claim 5, wherein, ​ 7. The assembled waterpik handle with water flow switch of claim 6, wherein, The blocking seal body is provided with a first blocking seal ring near the communication hole, and the first blocking seal ring is resettable in the communication hole through the first elastic reset member.

8. The assembled waterpik handle with water flow switch of claim 7, wherein, The top of the blocking seal body is blocked in the through hole, and / or a contact seal is formed between the force receiving rod body and the through hole.

9. The assembled waterpik handle with water flow switch of claim 2, wherein, The rod body of the nozzle is communicated with the valve seat through an elastic seal, the elastic seal is arranged in the valve seat, the rod body is inserted into the valve seat and locked by the lock piece, and the elastic seal applies a rebound force to the rod body after the rod body is unlocked.

10. The assembled waterpik handle with water flow switch of claim 1, wherein, The water flow switch control mechanism further comprises a mounting branch pipe, the mounting branch pipe is provided with a mounting bracket, one end of the mounting branch pipe is communicated with the water inlet chamber, and the other end is communicated with the water pipe mechanism; the first elastic reset member is a spring and is installed between the mounting bracket and the blocking seal body.

11. The assembled waterpik handle with water flow switch of claim 10, wherein, The water pipe mechanism at least comprises a pipe core and a water pipe; the pipe core has a liquid flow channel inside and has a pipe core water inlet and a pipe core water outlet communicated with the liquid flow channel at both ends; the water pipe is connected to the pipe core water inlet, and the pipe core water outlet is inserted into the mounting branch pipe.

12. The assembled waterpik handle with water flow switch of claim 11, wherein, The handle shell is integrally formed; alternatively, the handle shell comprises a first shell and a second shell, and the first shell and the second shell are clamped and spliced to form the handle shell.

13. The assembled waterpik handle with water flow switch of claim 12, wherein, The pipe core is rotatably installed in the handle shell through a clamping assembly; the clamping assembly comprises: a first clamping port arranged on the inner wall of the first shell; a second clamping port arranged on the inner wall of the second shell and surrounding the first clamping port to form a limiting clamping hole; a first annular rotating groove annularly arranged on the pipe core, the first annular rotating groove being clamped in the limiting clamping hole and rotating along the axis of the pipe core.

14. The assembled waterpik handle with water flow switch of claim 12, wherein, The pipe core is detachably inserted into the handle shell through a limiting assembly; the limiting assembly comprises: a cantilever arranged in the handle shell, the cantilever being provided with a limiting clamping key; a limiting protrusion arranged on the outer wall of the pipe core, the limiting protrusion being provided with a limiting clamping groove matched with the limiting clamping key, and the limiting clamping groove being clamped with the limiting clamping key after the pipe core is inserted into the handle shell and rotated.

Images