Small-size large-flow drawing head structure

Abstract

The utility model discloses a small-size large-flow drawing head structure which comprises a water channel capable of being arranged in a shell, and the water channel is provided with a water inlet channel, a water distribution cavity and a first water outlet channel. A first water outlet capable of communicating with the first water outlet channel is formed in the peripheral side of the water distribution cavity; the two transverse sides of the water channel are provided with expansion parts facing the inner side wall of the shell, the expansion parts can be communicated with the first water outlet and the first water outlet channel, the sides of the expansion parts can be attached to or abut against the inner side wall of the shell, the expansion parts are provided with plugs, and the plugs can enable water flow of the first water outlet to flow to the first water outlet channel through the expansion parts. By optimizing the water channel design and utilizing the internal space, the flow performance is remarkably improved while the compact structure is guaranteed, flexible switching of water flow is achieved through the center bolt assembly, and the requirements of various application scenes are met. The problem of flow limitation caused by size limitation in the prior art can be effectively solved, and the method has the advantages of being efficient, reliable and attractive.

Description

Technical Field

[0001] This utility model belongs to the field of fluid control equipment technology, specifically a small-size, high-flow pull-out head structure. Background Technology

[0002] In the field of modern fluid control equipment, pull-out connectors are widely used as an important functional component in faucets, pipe fittings, and other fluid delivery devices. Their core function is to achieve efficient fluid delivery through optimized internal waterway design, while simultaneously meeting the needs of applications with limited installation space. However, existing pull-out connector structures still have many shortcomings in practical applications, especially in balancing small size design with high flow rate performance, which presents a significant challenge.

[0003] Currently, pull-out drawer structures on the market typically employ traditional straight-through or segmented waterway designs. While these can meet basic fluid transport needs to a certain extent, their internal flow channel layouts are often complex, leading to increased fluid resistance and consequently affecting flow performance. Furthermore, due to structural size constraints, existing pull-out drawers, while pursuing miniaturization, struggle to guarantee sufficient flow cross-sectional area, resulting in limited flow and failing to meet the demands of high-flow-rate applications. This contradiction between size and performance has become a key technical challenge hindering the further development of pull-out drawer structures.

[0004] On the other hand, existing pull-out head structures generally lack full utilization of internal space in their design; the water outlet and the water distribution chamber are of constant size, which causes the water flow from the water distribution chamber to be limited by the size of the water outlet, resulting in the inability to form a large flow of water. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a small-size, high-flow pull-out head structure.

[0006] This utility model is achieved through the following technical solution:

[0007] A small-sized, high-flow-rate pull-out head structure includes a water channel that can be configured inside a housing. The water channel is configured with an inlet channel, a water distribution chamber, and a first outlet channel. A first outlet channel that connects to the first outlet channel is configured on the periphery of the water distribution chamber. Expanding portions that face the inner wall of the housing are configured on both sides of the water channel. The expanding portions can connect the first outlet channel and the first outlet channel. The sides of the expanding portions can be close to or abut against the inner wall of the housing. A plug is provided on the expanding portions, which allows the water flow from the first outlet channel to flow through the expanding portions to the first outlet channel.

[0008] In this embodiment of the utility model, the expansion portion has an opening facing the inner wall of the outer shell, the plug is disposed on the inner circumference of the opening, and a sealing element is disposed between the outer circumference of the plug and the inner circumference of the opening.

[0009] In this embodiment of the present invention, the two expansion sections form a water passage cavity along the water flow direction in the water channel. The lateral dimension of the water passage cavity is not less than the lateral dimension of the first water outlet, and the lateral dimension of the water passage cavity is greater than the lateral dimension of the first water outlet.

[0010] In this embodiment of the utility model, a central plug assembly is also included. The outer periphery of the central plug assembly can be adapted to the inner periphery of the water distribution chamber. The water channel is also configured with a second water outlet and a second water outlet channel. The central plug assembly can block the first water outlet or the second water outlet to realize that the water in the water distribution chamber flows to the first water outlet channel or the second water outlet channel.

[0011] In this embodiment of the present invention, the central plug assembly includes a bushing and a central plug. The bushing is provided with a water passage that can communicate with the first water outlet. The central plug can move vertically relative to the bushing. A water-stop pad is provided at one end of the central plug located in the water distribution cavity. When the water-stop pad is connected to the lower opening of the bushing, the water in the inlet flows through the water distribution cavity and the second water outlet to the second water outlet. When the water-stop pad is connected to the second water outlet, the water in the inlet flows through the water distribution cavity, the lower opening of the bushing, the water passage, and the first water outlet to the first water outlet.

[0012] In this embodiment of the utility model, a sealing ring is provided between the outer periphery of the bushing and the inner periphery of the water distribution cavity, and the sealing ring is disposed at the upper and lower ends of the water outlet; a spring is disposed between the central bolt and the bushing, and the spring can drive the central bolt and the water stop pad to move towards the second water outlet; one end of the central bolt can also extend out of the bushing, and a water stop ring is provided between the bushing and the central bolt.

[0013] In this embodiment of the utility model, a connection port is provided on the outer shell, and a button that can be adapted to the contour of the outer shell is provided at the connection port. The middle part of the button is configured to be rotatable and connected to the outer periphery of the water channel. Reset members are provided at both ends of the button. The reset members can reset the button after it is not pressed or after the pressure is released, so that the button can be adapted to the contour of the outer shell.

[0014] In this embodiment of the invention, the pressing end is provided with a groove having a vertical stroke, and the end of the central bolt extending out of the bushing can be disposed in the groove.

[0015] In this embodiment of the invention, the first water outlet is located on the inner periphery of the second water outlet; it also includes a water outlet assembly, which can be configured on the water outlet end of the outer casing.

[0016] In this embodiment of the present invention, a water softener is arranged on the inner periphery of the water outlet component, the water softener can be connected to the first water outlet channel, and a water outlet hole is arranged on the water outlet component located on the outer periphery of the water softener, and the second water outlet channel can be connected to the water outlet hole.

[0017] This utility model discloses a small-size, high-flow-rate pull-out head structure with the following advantages: By setting expansion sections on both sides of the water channel, the internal space of the outer shell is fully utilized, significantly increasing the cross-sectional area of ​​the water flow channel, thereby improving flow performance; the design of the plug and sealing component ensures the sealing of the water flow path and avoids leakage; the water distribution function of the central plug component enables flexible switching of water flow to meet the needs of different application scenarios; the coordinated design of the button and reset component simplifies the operation process while ensuring the compactness and aesthetics of the structure; the combination of the water softener and the water outlet hole in the water outlet component achieves a uniform water output effect and improves the user experience; the overall design of the pull-out head structure takes into account functionality, reliability, and aesthetics, and is suitable for various fluid transportation scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a top view of the pull-out head of this utility model.

[0020] Figure 2 This is a cross-sectional view of the present invention.

[0021] Figure 3 This is an exploded view of the present invention.

[0022] Figure 4 This is a schematic diagram of the default state of the pull-out head of this utility model.

[0023] Figure 5 This is a schematic diagram showing the switching of the pull-out head in its default state.

[0024] Figure 6 This is a schematic diagram showing the pull-out head of this utility model after switching from its default state.

[0025] Figure 7 yes Figure 6 A diagram illustrating the switching action when pressing again in the current state.

[0026] Figure 8 yes Figure 6 The image shows the state after pressing again to switch (returning to the default state). Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model 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 this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, 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", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 utility model according to the specific circumstances.

[0031] 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.

[0032] This utility model's small-size, high-flow-rate pull-out head structure achieves efficient high-flow-rate fluid delivery while maintaining a compact structure through optimized waterway design and internal space utilization. The outer shell 1, as the load-bearing component of the overall structure, houses a complete waterway system 2, including an inlet channel 3, a water distribution chamber 4, a first outlet channel 5, and a second outlet channel 24. The first and second outlet channels are similar in size to existing systems, with an expansion section at the front of the first outlet channel to increase flow rate. These components work together to not only meet the requirements of a small size design but also significantly improve water flow capacity. In the figure, the length direction of the pull-out head is considered horizontal, while the button pressing direction can be vertical.

[0033] Referring to the accompanying drawings, the inlet channel 3 is located at one end of the outer casing 1, and a one-way valve is installed at its inlet, which is fixed at the inlet position of the inlet channel 3. Water flowing through the inlet channel enters the water distribution chamber 4. A sealing ring 16 is installed on the inner wall of the water distribution chamber 4, and the central bolt assembly 11 is positioned by a rotating snap-fit ​​mechanism. A slot can be provided at the upper end of the water distribution chamber, and the central bolt assembly has a flange. After installation, rotation causes the flange to engage in the slot. The central bolt assembly 11 includes a bushing 12 and a central bolt 13. The outer circumference of the bushing 12 is adapted to the inner circumference of the water distribution chamber 4 to ensure that water does not leak from the gap between them. A water outlet 14 is provided on the periphery of the bushing 12, which communicates with the first water outlet 6, thereby guiding the water flow in the water distribution chamber 4 to the first water outlet channel 5. The structure of the central bolt assembly can be similar to that of existing technologies.

[0034] The center plug 13 is vertically movable relative to the bushing 12, with one end extending out of the bushing 12 and positioned within the groove 22 of the button 20. A water-stop pad 15 is provided at one end of the center plug 13 located in the water distribution chamber 4. The water-stop pad 15 connects with either the lower opening of the bushing 12 or the second outlet 23 to switch the direction of water flow. When the water-stop pad 15 engages with the lower opening of the bushing 12, water flows through the water distribution chamber 4, the second outlet 23, and towards the second outlet channel 24. When the water-stop pad 15 engages with the second outlet 23, water flows through the water distribution chamber 4, the lower opening 28 of the bushing, the through-hole 14, and the first outlet 6, and towards the first outlet channel 5. A spring 17 is installed between the center plug 13 and the bushing 12. The spring 17 drives the center plug 13 and the water-stop pad 15 to move towards the second outlet 23, so that when the water inlet is closed, water can flow from the first outlet when the water is opened again. This can be defined as the default initial water splash. In addition, a water-stop ring 18 is also provided between the bushing 12 and the center plug 13. This water-stop ring can be an oil seal to further ensure the sealing performance between the two.

[0035] Furthermore, a first water outlet 6 is provided on the periphery of the water distribution cavity 4, and the first water outlet 6 is connected to the first water outlet channel 5. In order to make full use of the internal space of the outer shell 1 and increase the water flow rate, expansion sections 7 are provided on both sides of the water channel 2. The expansion sections 7 extend toward the inner wall of the outer shell 1 and are close to or abut against the inner wall of the outer shell 1. The design of the expansion sections 7 significantly increases the effective flow area of ​​the water flow channel, thereby improving the flow capacity of the water. A plug 8 is provided on the expansion section 7. The plug 8 is installed on the inner periphery of the opening formed by the expansion section 7 toward the inner wall of the outer shell 1. A sealing element 9 is provided between the outer periphery of the plug 8 and the inner periphery of the opening. The sealing element 9 is made of rubber and is embedded in the annular groove on the outer periphery of the plug 8. The sealing is achieved by the clamping force to ensure the sealing of the water flow path. The two expansion sections 7 form a water passage cavity 10 in the water channel 2 along the water flow direction. The lateral dimension L1 of the water passage cavity 10 is not less than the lateral dimension L2 of the first water outlet 6 and is greater than the lateral dimension L3 of the first water outlet channel 5.

[0036] The outer casing 1 has a connection port 19, and a button 20 is provided at the connection port 19. The middle part of the button 20 is connected to the outer periphery of the water channel 2 by a rotating connection. Both ends of the button 20 are provided with reset components 21. The reset components 21 are made of springs, torsion springs, or elastic sheets, etc. The figure shows a spring. One end of the spring is fitted onto the button 20, and the other end is fitted onto the water channel 1. The two reset components ensure that the button 20 can quickly reset and maintain consistency with the outline of the outer casing 1 after being unpressed or after being pressed and released. One end of the button 20 has a groove 22 with vertical stroke, and the end of the center bolt 13 extending out of the bushing 12 is disposed in the groove 22. By pressing the button 20, the groove 22 pushes the center bolt 13 to move vertically, changing the position of the water stop pad 15, thereby switching the water flow direction. At the same time, it also ensures that when the button resets, it will not cause the center bolt to move vertically, ensuring that the water flow does not change.

[0037] The first water outlet 5 is located on the inner periphery of the second water outlet 24, and the water outlet assembly 25 is disposed at the water outlet end of the outer casing 1. A water softener 26 is provided on the inner periphery of the water outlet assembly 25, and the water softener 26 is connected to the first water outlet 5. The water softener 26 adopts a porous mesh structure, and the water flow is dispersed into a fine water flow after passing through the water softener 26, reducing the water flow impact and improving the comfort of use. A water outlet hole 27 is provided on the water outlet assembly 25 located on the outer periphery of the water softener 26, and the second water outlet 24 is connected to the water outlet hole 27 to form the water flow effect of a shower.

[0038] In practical applications, users can switch the water flow direction by pressing button 20. When water is needed from the first outlet 5 (which is also the default mode of turning the water off and then on), pressing button 20 moves the central valve 13 downward (or it can be due to the spring in the default state). The water-stop pad 15 engages with the lower opening of the bushing 12 and separates from the second outlet 23. The water flows through the water distribution chamber 4, the lower opening of the bushing 12, the water outlet 14, and the first outlet 6 to the first outlet 5, and finally is dispersed into a fine stream by the water softener 26. When water is needed from the second outlet 24, pressing button 20 again moves the central valve 13 upward. The water-stop pad 15 separates from the second outlet 23 and engages with the lower opening of the bushing 12. The water flows through the water distribution chamber 4, the second outlet 23, and to the second outlet 24, and finally flows out evenly through the outlet hole 27. The entire operation process is simple and intuitive, providing a good user experience.

[0039] This utility model discloses a small-sized, high-flow-rate pull-out head structure, applicable to kitchen faucets and basin faucets. In use, where the central valve can only move 1.5mm, to achieve a high flow rate, the diameter of the central valve assembly is increased within the limited space to expand the flow rate, while also requiring a small button gap. Local flow-limiting points utilize side-mounted expansion sections to increase the water flow area. The specific implementation is as follows: 1. Maximizing the diameter of the central valve assembly increases the water flow area; 2. Side-mounted slots are created at the flow-limiting points of the water channel to form expansion sections, changing the original structure of directly connecting to the first outlet channel, thereby increasing the water flow area and thus increasing the flow rate; 3. After the button switches water paths, a reset component restores the flush position, ensuring the button is flush with the outer casing for an aesthetically pleasing appearance, while maintaining the same water outlet position.

[0040] 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 related technical or knowledge. 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 small-size, high-flow-rate pull-out head structure, comprising a water channel that can be configured within a housing, characterized in that, The waterway is configured with an inlet channel, a water distribution chamber, and a first outlet channel; the water distribution chamber is provided with a first outlet that can connect to the first outlet channel; the waterway is provided with expansion sections facing the inner wall of the outer shell on both sides in the transverse direction, the expansion sections can connect the first outlet and the first outlet channel, the sides of the expansion sections can be close to or abut against the inner wall of the outer shell, and the expansion sections are provided with plugs, which allow the water flow from the first outlet to flow through the expansion sections to the first outlet channel.

2. The small-size, high-flow pull-out head structure according to claim 1, characterized in that, The expansion section has an opening facing the inner wall of the outer casing, the plug is disposed on the inner circumference of the opening, and a sealing element is disposed between the outer circumference of the plug and the inner circumference of the opening.

3. The small-size, high-flow pull-out head structure according to claim 2, characterized in that, The two expansion sections form a water passage cavity along the water flow direction in the water channel. The lateral dimension of the water passage cavity is not less than the lateral dimension of the first outlet, and the lateral dimension of the water passage cavity is greater than the lateral dimension of the first outlet channel.

4. A small-size, high-flow pull-out head structure according to any one of claims 1-3, characterized in that, It also includes a central plug assembly, the outer periphery of which can be adapted to the inner periphery of the water distribution chamber. The water channel is also equipped with a second water outlet and a second water outlet channel. The central plug assembly can block the first water outlet or the second water outlet to realize that the water in the water distribution chamber flows to the first water outlet channel or the second water outlet channel.

5. The small-size, high-flow pull-out head structure according to claim 4, characterized in that, The central plug assembly includes a bushing and a central plug. The bushing is provided with a water passage that can communicate with the first water outlet. The central plug can move vertically relative to the bushing. A water-stop pad is provided at one end of the central plug located in the water distribution chamber. When the water-stop pad is connected to the lower opening of the bushing, the water in the inlet flows through the water distribution chamber and the second water outlet to the second water outlet. When the water-stop pad is connected to the second water outlet, the water in the inlet flows through the water distribution chamber, the lower opening of the bushing, the water passage, and the first water outlet to the first water outlet.

6. The small-size, high-flow-rate pull-out head structure according to claim 5, characterized in that, A sealing ring is provided between the outer periphery of the bushing and the inner periphery of the water distribution cavity, and the sealing ring is disposed at the upper and lower ends of the water outlet; a spring is provided between the central bolt and the bushing, which can drive the central bolt and the water stop pad to move towards the second water outlet; one end of the central bolt can also extend out of the bushing, and a water stop ring is provided between the bushing and the central bolt.

7. A small-size, high-flow-rate pull-out head structure according to claim 5 or 6, characterized in that, The outer casing has a connection port, and a button that can be adapted to the outline of the outer casing is arranged at the connection port. The middle part of the button is configured to be rotatable and connected to the outer periphery of the water channel. Reset components are arranged at both ends of the button. The reset components can reset the button when it is not pressed or after being pressed and released, so that the button can be adapted to the outline of the outer casing.

8. The small-size, high-flow pull-out head structure according to claim 7, characterized in that, One end of the pressing device is provided with a groove having a vertical stroke, and one end of the center bolt extending out of the bushing can be disposed within the groove.

9. The small-size, high-flow-rate pull-out head structure according to claim 8, characterized in that, The first water outlet is located on the inner periphery of the second water outlet; it also includes a water outlet assembly that can be configured at the water outlet end of the housing.

10. A small-size, high-flow-rate pull-out head structure according to claim 9, characterized in that, The water outlet assembly is equipped with a water softener on its inner periphery, which is connected to the first water outlet channel. The water outlet assembly located on the outer periphery of the water softener is equipped with a water outlet hole, and the second water outlet channel is connected to the water outlet hole.

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