A spooling head

Abstract

This invention discloses a pull-out head, comprising a body, wherein a water inlet channel and a water distribution chamber are provided within the body, and a first water outlet channel and a second water outlet channel are also provided within the body, which cooperate with the water distribution chamber. A guide sleeve and a central bolt are provided within the water distribution chamber, and the central bolt can move along the guide sleeve. A sealing body is provided on the central bolt for switching between the first and second water outlet channels. The sealing body can move with the central bolt, and its movement can block the water inlet end of the first or second water outlet channel. This pull-out head switches between different water paths by the movement of the central bolt within the guide sleeve. The self-resetting function is achieved by a spring. When water is sprayed from the shower head, the central bolt moves upward, and the irregular ring seals with the guide sleeve. This seal is a straight-section seal; under low pressure, the back pressure provided by the water flow only needs to overcome the spring to achieve the sealing effect, thus preventing water leakage under low pressure.

Description

Technical Field

[0001] This invention relates to a pull-out head. Background Technology

[0002] Pull-out nozzles typically produce two types of water spray: aerated water and shower water. Self-resetting pull-out nozzles can effectively prevent direct shower water from splashing and affecting the user experience. However, under low water pressure, self-resetting pull-out nozzles are prone to water leakage. In other words, the existing technology uses a beveled seal for the center plug. Under low water pressure, the back pressure of the water flow is small, but it still needs to overcome the force of the spring before squeezing the sealing ring to achieve a sealing effect. Due to the low water pressure, it is impossible to overcome the spring force, and the sealing ring cannot achieve a seal. Water leakage is likely to occur at the outlet. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a pull-out head.

[0004] This invention is achieved through the following technical solution:

[0005] A pull-out head includes a body, which has a water inlet channel and a water distribution chamber that are connected to each other. The body also has a first water outlet channel and a second water outlet channel that can cooperate with the water distribution chamber. The water distribution chamber has a cooperating guide sleeve and a central plug. The central plug can move along the guide sleeve. The central plug has a sealing body for switching the water outlet of the first water outlet channel or the second water outlet channel. The sealing body can move with the central plug. The movement of the sealing body can block the water inlet end of the first water outlet channel or the second water outlet channel.

[0006] In this embodiment of the invention, the water distribution cavity is provided with a groove that can be connected to the water inlet channel, the groove can be connected to the first water outlet channel, and the sealing body can seal with the peripheral wall of the groove to achieve the interception of the first water outlet channel.

[0007] In this embodiment of the invention, the central plug is sleeved inside the guide sleeve, and the guide sleeve has an outlet on its peripheral wall that can be connected to the water inlet channel. The outlet can be connected to the second water outlet channel, and the sealing body can seal with the inner peripheral wall of the guide sleeve to achieve the interception of the second water outlet channel.

[0008] In this embodiment of the invention, the sealing body includes an annular body, which is sleeved on the central bolt and can seal against the side wall of the groove; a sealing sheet is also provided on the outer periphery of the annular body, which can seal against the inner peripheral wall of the guide sleeve.

[0009] In this embodiment of the invention, the lower outer periphery of the annular body can seal with the inner peripheral wall of the groove, and the upper outer periphery of the annular body is provided with an elastic sealing sheet. The inner periphery of the sealing sheet is connected to the outer peripheral wall of the upper end of the annular body, and the outer periphery of the sealing sheet is sealed with the inner peripheral wall of the guide sleeve. The inner periphery of the sealing sheet is located above the outer periphery of the sealing sheet.

[0010] In this embodiment of the invention, a protrusion is provided in the groove, and a recess is provided below the central bolt to cooperate with the protrusion.

[0011] In this embodiment of the invention, the guide sleeve is provided with a through hole for the center bolt to pass through, the center bolt is provided with a second boss above the sealing body, the second boss can abut against the lower part of the through hole, the center bolt is provided with a first boss on the outer periphery between the second boss and the sealing body, and a spring is provided between the first boss and the guide sleeve.

[0012] In this embodiment of the invention, the main body is provided with a slot, the guide sleeve is provided with a connecting piece above it, the connecting piece can be connected with the slot, and a first sealing ring is provided between the outer periphery of the guide sleeve and the inner peripheral wall of the water distribution cavity.

[0013] In this embodiment of the invention, the guide sleeve is provided with a second sealing ring that can cooperate with the inner peripheral wall of the through hole, and the upper end of the central bolt can extend out of the through hole and cooperate with a button.

[0014] In this embodiment of the invention, the inlet end of the main body is provided with a one-way valve, and the outlet end of the main body is provided with a first outlet hole and a second outlet hole.

[0015] The pull-out head of the present invention has the following beneficial effects: different water paths can be switched by the movement of the central bolt in the guide sleeve; the self-resetting function is realized by the spring; when the shower water is discharged, the central bolt moves upward and the irregular ring seals with the guide sleeve. The seal here is a straight section seal. Under low pressure environment, the back pressure provided by the water flow only needs to overcome the spring to achieve the sealing effect, thus achieving the purpose of preventing water from flowing through under low pressure. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is an exploded view of the present invention.

[0019] Figure 3 This is a schematic diagram of state one of the present invention.

[0020] Figure 4 This is a schematic diagram of state two of the present invention.

[0021] Figure 5 This is an exploded view of the connection between the central bolt and the guide sleeve in this invention.

[0022] Figure 6 This is a schematic diagram of the connection between the central bolt and the guide sleeve in this invention.

[0023] Figure 7 This is a partially enlarged schematic diagram of the present invention. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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, they should not be construed as limitations on this invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Referring to the accompanying drawings, a pull-out head includes a body 10. The body has a water inlet channel 11 and a water distribution chamber 12 that are connected to each other. The body also has a first water outlet channel 13 and a second water outlet channel 14 that cooperate with the water distribution chamber. In use, the pull-out head emits two types of water: shower water and aerated water. The water distribution chamber has a cooperating guide sleeve 20 and a central plug 30. The guide sleeve is fixed to the body, and the central plug can move up and down within the guide sleeve to switch water paths. The central plug can move along the guide sleeve. The central plug has a sealing body 40 for switching between the first and second water outlet channels. The sealing body can move with the central plug, and its movement can block the water inlet of either the first or second water outlet channel.

[0030] Furthermore, the water distribution cavity is provided with a groove 121 that can be connected to the water inlet channel. The groove can be connected to the first water outlet channel. The sealing body can seal with the periphery of the groove to intercept the flow of the first water outlet channel. In this invention, water flows into the water distribution cavity from the water inlet end. When the sealing body blocks the second water outlet channel, the water flows out from the groove of the water distribution cavity flow channel and then flows out from the water outlet end of the main body through the first water outlet channel.

[0031] Preferably, the central plug is sleeved inside the guide sleeve, and the guide sleeve has an outlet 21 that can be connected to the water inlet channel on its peripheral wall. The outlet can be connected to the second water outlet channel, and the sealing body can seal with the inner peripheral wall of the guide sleeve to intercept the flow of the second water outlet channel. In this invention, the water flows into the water distribution chamber from the water inlet end. When the sealing body blocks the first water outlet channel, the water flows out from the guide sleeve of the water distribution chamber, and then flows out from the water outlet end of the main body through the outlet and the first water outlet channel in sequence.

[0032] In a preferred embodiment of the present invention, the sealing body includes an annular body 41, which is sleeved on the central bolt and can seal against the side wall of the groove; a sealing sheet 42 is also provided on the outer periphery of the annular body, which can seal against the inner peripheral wall of the guide sleeve.

[0033] More specifically: the sealing body is an anisotropic sealing element. The lower outer circumference of the annular body can seal against the inner circumferential wall of the groove. When the lower end of the annular body seals against the groove, water flows out from the outlet of the guide sleeve. At this time, the back pressure of the water flow can overcome the pressure of the spring. An elastic sealing plate is provided on the upper outer circumference of the annular body. The inner circumference of the sealing plate is connected to the outer circumferential wall of the upper end of the annular body. The outer circumference of the sealing plate seals against the inner circumferential wall of the guide sleeve. When the sealing plate seals against the guide sleeve, water flows into the groove and flows to the first water outlet channel. The inner circumference of the sealing plate is located above the outer circumference of the sealing plate. In a preferred use, a cavity 43 is formed between the sealing plate and the annular body. When the sealing plate seals against the guide sleeve, the water flow will exert a certain pressure on the sealing plate through the cavity, which can better ensure the sealing performance between the sealing plate and the guide sleeve.

[0034] In one use of the present invention, a protrusion 122 is provided in the groove, and a recess 31 that cooperates with the protrusion is provided below the central bolt.

[0035] Furthermore, the guide sleeve is provided with a through hole 22 for the center bolt to pass through. The center bolt is provided with a second boss 33 above the sealing body. The second boss can abut against the lower part of the through hole, which can limit the upward movement of the center bolt and ensure that the center bolt will not disengage from the guide sleeve under the action of the spring. The center bolt is provided with a first boss 32 on the outer periphery between the second boss and the sealing body. A spring 50 is provided between the first boss and the guide sleeve. The spring is located on the outer periphery of the through hole and the center bolt.

[0036] Preferably, the main body is provided with a slot 15, and a connecting piece 23 is provided above the guide sleeve. The connecting piece can be connected with the slot. In a preferred embodiment, the upper end of the guide sleeve is elongated. When installing, the connecting piece is not engaged with the slot. The guide sleeve is inserted into the water distribution cavity. By rotating, the connecting piece is rotated into the slot to realize the installation of the guide sleeve. A first sealing ring 61 is provided between the outer periphery of the guide sleeve and the inner peripheral wall of the water distribution cavity to prevent water leakage.

[0037] Furthermore, the guide sleeve is provided with a second sealing ring 62 that can cooperate with the inner peripheral wall of the through hole. This ensures that water will not flow out from the first and second water outlet channels or from other places, thus preventing leakage of the entire pull-out head. The upper end of the central bolt can extend from the through hole and connect with a button 70. Preferably, the button is hinged to the body, with the middle part of the button hinged to the body to achieve a seesaw structure. One end of the button is connected to the upper end of the central bolt. By controlling the button, the movement of the central bolt can be realized, thereby switching the water path.

[0038] In a preferred application of the present invention, the water inlet end of the main body is provided with a one-way valve 80, and the water outlet end of the main body is provided with a first water outlet hole 16 and a second water outlet hole 17. The first water outlet hole is connected to a first water outlet channel and can be used for shower water, and the second water outlet hole is connected to a second water outlet channel and can be used for aerated water.

[0039] In this invention: when in shower mode, it is a straight section seal, that is, the sealing plate and the guide sleeve are sealed together, and the spring is placed in the middle. The water back pressure only needs to overcome the spring force to achieve a seal. When switching to a foaming water mode, the annular body and the groove are sealed by a slope. At this time, the spring provides a certain amount of elasticity to make the seal better, so as to achieve the purpose of the pull head not easily leaking water under low pressure conditions.

[0040] In more detail: The central plug, sealing body, and guide sleeve are assembled into a central plug assembly. The main body has a central plug hole (which can be a water distribution chamber) for assembling the central plug assembly. The central plug drives the sealing body to move up and down between the guide sleeve, switching the water path and realizing the switching between aerated water and shower water. In shower water mode, the sealing body and guide sleeve have a straight section seal, and the water back pressure only needs to overcome the spring force to achieve a seal. When switching to aerated water mode, the sealing body and the groove have a bevel seal. At this time, the spring provides a certain auxiliary force to make the seal better. Based on this, the purpose of the pull head is to prevent water leakage under low pressure conditions.

[0041] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A pull-out head, comprising a body, wherein the body is provided with a water inlet channel and a water distribution chamber that are connected to each other, and the body is further provided with a first water outlet channel and a second water outlet channel that can cooperate with the water distribution chamber, characterized in that, The water distribution chamber is equipped with a matching guide sleeve and a central bolt. The central bolt can move along the guide sleeve and is equipped with a sealing body for switching between the first and second water outlet channels. The sealing body can move with the central bolt, and its movement can block the inlet end of the first or second water outlet channel. The central bolt is sleeved inside the guide sleeve, and the peripheral wall of the guide sleeve is provided with an outlet that can connect to the inlet channel and communicate with the second water outlet channel. The sealing body can seal against the inner peripheral wall of the guide sleeve. The second water outlet channel is used for interception; the sealing body includes an annular body, which is sleeved on the central bolt and can seal against the side wall of the groove; a sealing plate is also provided on the outer periphery of the annular body, which can seal against the inner peripheral wall of the guide sleeve; the lower outer periphery of the annular body can seal against the inner peripheral wall of the groove, and an elastic sealing plate is provided on the upper outer periphery of the annular body, the inner periphery of the sealing plate is connected to the upper outer peripheral wall of the annular body, the outer periphery of the sealing plate seals against the inner peripheral wall of the guide sleeve, and the inner periphery of the sealing plate is located above the outer periphery of the sealing plate.

2. A pull-out head according to claim 1, characterized in that, The water distribution chamber is provided with a groove that can be connected to the water inlet channel. The groove can be connected to the first water outlet channel. The sealing body can seal with the peripheral wall of the groove to achieve the interception of the first water outlet channel.

3. A pull-out head according to claim 2, characterized in that, The groove has a protrusion, and the center bolt has a recess below it that matches the protrusion.

4. A pull-out head according to claim 3, characterized in that, The guide sleeve is provided with a through hole for the center bolt to pass through. The center bolt is provided with a second boss above the sealing body. The second boss can abut against the lower part of the through hole. The center bolt is provided with a first boss on its outer periphery between the second boss and the sealing body. A spring is provided between the first boss and the guide sleeve.

5. A pull-out head according to claim 4, characterized in that, The main body is provided with a slot, and a connecting piece is provided above the guide sleeve. The connecting piece can be connected with the slot, and a first sealing ring is provided between the outer periphery of the guide sleeve and the inner peripheral wall of the water distribution cavity.

6. A pull-out head according to claim 5, characterized in that, The guide sleeve is provided with a second sealing ring that can cooperate with the inner peripheral wall of the through hole, and the upper end of the center bolt can extend out of the through hole and be connected to a button.

7. A pull-out head according to claim 6, characterized in that, The main body is equipped with a one-way valve at the water inlet end and a first water outlet and a second water outlet at the water outlet end.

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