Valve core base and faucet with hollow pin

Abstract

The valve core base with hollow pins belongs to the field of bathroom faucet structural design technology, solving the problem of insufficient space for installation connectors due to the small inner diameter of the main body of a pull-out faucet. Key technical points include: a water-passing valve is located within the hollow cavity of the faucet main body component and has multiple first mounting holes; the valve core base body is located outside the water-passing valve and has multiple second mounting holes; multiple hollow cylindrical pins are inserted into corresponding first and second mounting holes at both ends; multiple hollow cylindrical sealing rings are inserted into the corresponding hollow pins, with their ends abutting against the bottom of the first and second mounting holes; the valve core is connected to the valve core base body, and the holes on it are connected to a second mounting hole; a nut locks the end of the hollow cavity to fix the valve core; the water-passing valve cooperates with a limiting component to prevent large-scale rotation of the water-passing valve during installation. This structure achieves high sealing performance in a small space and is mainly used in compact pull-out faucets.

Description

Technical Field

[0001] This utility model relates to the field of bathroom faucet structural design technology. More specifically, this utility model relates to a valve core base and faucet with a hollow pin. Background Technology

[0002] In the field of bathroom faucet technology, particularly in the design of pull-out faucets with small inner diameters, there has been a long-standing unresolved technical challenge. Due to limitations in product appearance and functionality, the inner diameter of some pull-out faucets must be compressed to a very small size. Within these confined spaces, after deducting the passageway and movement channel required for the pull-out hose, the remaining space is extremely limited. Existing technologies employing conventional structural design methods exhibit significant drawbacks: traditional flat end-face seals require a complete contact plane, but the small cavity cannot provide sufficient area for this; independent anti-detachment clips or threaded structures occupy additional radial space; and the integral rectangular valve body profile results in insufficient utilization of the cavity cross-section, leading to wasted space.

[0003] Conventional technologies, prioritizing structural simplicity, rely on stacked single-function components, further exacerbating space constraints. For example, using O-ring seals requires additional support rings to resist water pressure deformation, occupying axial space; the anti-detachment mechanism is designed separately from the sealing structure, repeatedly consuming limited installation area; the valve body uses a regular rectangular outline, which cannot adapt to asymmetrical cavities, leading to worsened space competition between hose channels and connectors. When the cavity diameter shrinks to below 35 mm, traditional designs are forced to compromise between function and size, resulting in derivative problems such as high leakage risk and low assembly efficiency.

[0004] Existing technologies are severely inadequate for adapting to unconventional connection surfaces. The inability to provide a complete plane or continuous cylindrical surface within the inner wall of curved or stepped cavities leads to the failure of traditional seals; independent anti-detachment mechanisms are difficult to install and secure in asymmetrical spaces; sealing and positioning functions require multiple separate components, further encroaching on already limited space. These problems have resulted in persistent reliability defects in small-sized pull-out faucets, severely hindering product technology development. Therefore, there is an urgent need to break through the design paradigm that prioritizes simplicity and develop a new connection structure system based on space compression. Utility Model Content

[0005] The purpose of this invention is to provide a valve core base structure that occupies little space and has strong sealing performance, thus breaking through the bottleneck of miniaturization design of pull-out faucets.

[0006] To achieve these objectives and other advantages of this utility model, a valve core base with a hollow pin is provided, comprising: The water valve is located in the hollow cavity of the mounting part of the faucet body assembly, and the water valve is provided with multiple first mounting holes. The valve core base body is located on the outside of the water valve, and the valve core base body is provided with multiple second mounting holes; Multiple hollow pins, each a column with a hollow interior; each hollow pin corresponds to a first mounting hole and a second mounting hole, with both ends of each hollow pin inserted into the corresponding first and second mounting holes respectively. Multiple sealing rings, all of which are cylindrical and hollow inside; each sealing ring corresponds to a hollow pin, and each sealing ring is inserted into the hollow hole of its corresponding hollow pin; one end of each sealing ring abuts against the bottom of its corresponding first mounting hole, and the other end abuts against the bottom of its corresponding second mounting hole. The valve core is located on the outside of the valve core base body and is connected to the valve core base body. The holes on the valve core correspond one-to-one with the second mounting holes, and each hole on the valve core is connected to its corresponding second mounting hole. A nut, which is tightened at the end of the hollow cavity, to secure the valve core; The limiting component is fixed inside the hollow cavity and located inside the water valve, abutting against the water valve.

[0007] Preferably, in the valve core base with hollow pin, the valve core base body is provided with a plurality of third mounting holes, and the valve core is provided with a plurality of mounting posts on the side opposite to the valve core base body. The mounting posts correspond one-to-one with the mounting holes, and each mounting post is inserted into its corresponding third mounting hole.

[0008] Preferably, in the valve core base with hollow pin, the hollow cavity includes a main cavity and an extension cavity. The extension cavity is located inside the main cavity and communicates with the main cavity. The axis of the extension cavity intersects with that of the main cavity. The water valve is arc-shaped and located in the extension cavity. The limiting member is fixed in the extension cavity. The inner arc surface of the water valve is opposite to the limiting member. Both ends of the water valve abut against the limiting member. The outer arc surface of the water valve fits against the inner wall of the extension cavity. The valve core base body, the valve core, and the nut are all located in the main cavity.

[0009] Preferably, in the valve core base with hollow pin, the valve core has three holes, namely a cold water hole, a hot water hole, and a water outlet hole.

[0010] Preferably, in the valve core base with hollow pin, the valve core is in contact with the valve core base body, and the shapes of the contact surfaces of the two are matched.

[0011] Preferably, in the valve core base with the hollow pin, the outer arc surface of the water valve contacts the valve core base body, and the shapes of the contact surfaces of the two are matched.

[0012] A faucet includes a valve core base with a hollow pin, and further includes: At least one inlet pipe and one outlet pipe, with the inlet end of each inlet pipe connected to the water supply end, and the outlet end of each inlet pipe and the inlet end of the outlet pipe connected to a first mounting hole. The shower assembly has a shower hose connected to the outlet end of the water pipe. Preferably, the faucet has two inlet pipes.

[0013] This utility model has at least the following beneficial effects: This invention achieves double sealing and mechanical anti-detachment in a small space through a composite structure of a hollow pin and a sealing ring.

[0014] This utility model adopts the insertion of mounting post and mounting hole to improve the positioning accuracy and torsional resistance of valve core.

[0015] This invention enhances the stability of irregular spatial structures by fitting the outer arc surface of the water valve to the extended cavity.

[0016] This invention eliminates the sealing risks caused by the gap between the two ends of the hollow pin abutting the bottom of the hole.

[0017] This invention blocks the fluid penetration path along the contact surface by matching the shape of the contact surface.

[0018] This invention optimizes the uniformity of sealing pressure distribution through an arc-shaped contact surface adaptation.

[0019] This utility model integrates dual inlet pipes and outlet channels to realize a complete hot and cold water system function in a compact space.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the disassembled components of a faucet according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a faucet according to an embodiment of the present utility model; Figure 3 This is a structural diagram of the valve core base after disassembly according to an embodiment of the present utility model; Figure 4 yes Figure 2 Enlarged structural diagram at point A in the middle; The attached figures are labeled as follows: Faucet main body component-1; Shower head assembly-11; Mounting part-12; Hollow cavity-121; Limiting component-122; Water valve-2; Inlet pipe-23; Outlet pipe-24; Sealing ring-3; Hollow pin-4; Valve core base body-5; Valve core-6; Nut-7. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0023] It should be noted that in the description of this utility model, the terms "horizontal", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0024] like Figures 1 to 4 As shown, this utility model provides a valve core base with a hollow pin, comprising: The water valve 2 is disposed in the hollow cavity 121 of the mounting part 12 of the faucet body assembly 1, and the water valve 2 is provided with a plurality of first mounting holes; the faucet body assembly 1 includes a faucet mounting support part (hereinafter referred to as mounting part 12) including a housing, and functional parts such as a shower head and a shower hose (hereinafter referred to as shower head assembly 11), etc.

[0025] The valve core base body 5 is located on the outside of the water valve 2, and the valve core base body 5 is provided with multiple second mounting holes. Multiple hollow pins 4, each a cylindrical, hollow column, are used. Each hollow pin 4 corresponds to a first mounting hole and a second mounting hole, with both ends inserted into their respective holes. The hollow pins 4 are inserted into the first mounting hole of the water valve 2 from a direction perpendicular to its detachment direction, effectively preventing the water valve 2 from falling off. The hollow pins 4 can exist independently or be combined with the valve core base body 5 to form a composite component.

[0026] Multiple sealing rings 3, each of which is cylindrical and hollow inside; each sealing ring 3 corresponds to a hollow pin 4, and each sealing ring 3 is inserted into the hollow hole of its corresponding hollow pin 4; one end of each sealing ring 3 abuts against the bottom of its corresponding first mounting hole, and the other end abuts against the bottom of its corresponding second mounting hole. The valve core 6 is located on the outside of the valve core base body 5 and is connected to the valve core base body 5. The holes on the valve core 6 correspond one-to-one with the second mounting holes, and each hole on the valve core 6 is connected to its corresponding second mounting hole. Nut 7, which is locked at the end of the hollow cavity 121 to fix the valve core 6; The limiting member 122 is fixed inside the hollow cavity 121 and located inside the water valve 2, and abuts against the water valve 2.

[0027] The water-passing valve 2 is located inside the hollow cavity 121 of the faucet main body assembly 1, and has multiple first mounting holes thereon; the valve core base body 5 is located outside the water-passing valve 2, and has multiple second mounting holes thereon. During assembly, the water-passing valve 2 is installed against the inner wall of the hollow cavity 121, ensuring that the outer surface is in close contact with the inner wall of the hollow cavity 121; the valve core base body 5 covers the outer side of the water-passing valve 2, and the mounting holes of both are kept coaxially aligned. During operation, the water-passing valve 2 is inserted from the lower side of the hollow cavity 121, and the valve core base body 5 is then positioned and installed, so that the first mounting holes and the second mounting holes are precisely aligned, facilitating subsequent component assembly.

[0028] Each hollow pin 4 is a cylindrical hollow structure, with its two ends inserted into the corresponding first and second mounting holes, respectively. Each sealing ring 3 is also a cylindrical hollow structure, inserted into the inner cavity of the hollow pin 4. During assembly, the two ends of the hollow pin 4 are inserted into the first and second mounting holes, respectively; the sealing ring 3 is pressed into the hollow hole of the hollow pin 4, with its two ends contacting the bottom of the first and second mounting holes, respectively. During operation, the hollow pin 4 provides a mechanical positioning function, limiting the relative displacement between the water valve 2 and the valve core base body 5; the sealing ring 3 expands to both sides under water pressure, enhancing the bidirectional sealing effect on the bottom of the hole.

[0029] The valve core 6 is connected to the outside of the valve core base body 5, and its holes are connected to a second mounting hole. The nut 7 is locked at the end of the hollow cavity 121 to fix the valve core 6. The limiting member 122 is fixed inside the hollow cavity 121 and abuts against the water valve 2. The contact surface shape between the valve core 6 and the valve core base body 5 must be matched in design. During assembly, the valve core 6 is installed against the outside of the valve core base body 5, and the holes on the valve core 6 are connected to the respective second mounting holes on the valve core base body 5 to ensure water passage. The nut 7 is screwed into the threaded section at the end of the hollow cavity 121 to apply axial fixing force. The limiting member 122 is welded or snapped into the hollow cavity 121. During installation, the limiting member 122 prevents the circumferential rotation of the water valve 2 to ensure the installation angle is fixed and to prevent the components from loosening. During operation, the nut 7 provides stable axial constraint after being locked.

[0030] This solution achieves efficient sealing and stable assembly within a compact space. Through the nested design of the hollow pin 4 and the sealing ring 3, mechanical positioning and water-pressure-enhanced sealing are simultaneously completed within a limited radial dimension, reducing the need for additional support components. The combined fixing method of the nut 7 and the limiting component 122 suppresses axial displacement and circumferential rotation, improving the long-term stability of the assembly within the narrow cavity. The overall structure adapts to the contours of small cavities, optimizing space utilization and reducing the risk of leakage.

[0031] In another embodiment, the valve core base with hollow pins has multiple third mounting holes on the valve core base body 5, and multiple mounting posts on the side of the valve core 6 opposite to the valve core base body 5. Each mounting post corresponds to a mounting hole, and each mounting post is inserted into its corresponding third mounting hole. By engaging the multiple third mounting holes on the valve core base body 5 with the multiple mounting posts on the valve core 6, precise alignment between the valve core 6 and the valve core base body 5 is achieved, preventing circumferential rotation caused by water flow impact or vibration, and ensuring the stability of the assembly within the narrow cavity.

[0032] In another embodiment, the hollow cavity 121 of the valve core base with hollow pin includes a main cavity (horizontal cavity) and an extension cavity (vertical cavity). The extension cavity is located inside the main cavity and communicates with it, intersecting the axis of the main cavity. The water valve 2 is arc-shaped and located within the extension cavity. The limiting member 122 is fixed within the extension cavity. The inner arc surface of the water valve 2 faces the limiting member 122, and both ends of the water valve 2 abut against the limiting member 122. The outer arc surface of the water valve 2 fits against the inner wall of the extension cavity. The valve core base body 5, valve core 6, and nut 7 are all located within the main cavity. The arc-shaped design of the water valve 2 conforms to the contour of the inner wall of the extension cavity, and this arc-shaped contact surface adapts to the shape of the inner wall of the extension cavity, optimizing the compact layout of the components in narrow areas. The limiting member 122 is fixed within the extension cavity and abuts against both ends of the water valve 2, constraining the displacement and rotation of the water valve 2 and ensuring accurate installation angle. The valve core base body 5, valve core 6, and nut 7 are arranged in the main cavity, which avoids structural interference in irregular spaces and reduces assembly complexity.

[0033] In another embodiment, the valve core base with a hollow pin has three holes on the valve core: a cold water hole, a hot water hole, and a water outlet hole. During assembly, the valve core 6 is installed against the outer side of the valve core base body 5, and the cold water hole, hot water hole, and water outlet hole on the valve core 6 are respectively connected to the three second mounting holes on the valve core base body 5 to ensure water circuit connectivity.

[0034] In another embodiment, in the valve core base with a hollow pin, the valve core 6 contacts the valve core base body 5, and the shapes of their contact surfaces match. By ensuring that the contact surface shapes of the valve core 6 and the valve core base body 5 are matched, structural gaps during assembly are eliminated. When the contact surface of the valve core 6 and the contact surface of the valve core base body 5 are fully fitted, fluid cannot penetrate along the contact surface, blocking potential leakage paths. This design is particularly suitable for high-pressure water flow environments, avoiding localized leakage problems caused by uneven contact surfaces, while reducing vibration transmission caused by water flow impact and improving component stability.

[0035] In another embodiment, in the valve core base with a hollow pin, the outer arc surface of the water-passing valve 2 contacts the valve core base body 5, and the shapes of their contact surfaces match. This ensures that the sealing pressure is evenly distributed along the contact surface, avoiding localized stress concentration and reducing the risk of contact surface deformation; simultaneously, it enhances the load transfer efficiency between the water-passing valve 2 and the valve core base body 5, improving the overall rigidity of the assembly. In narrow cavities, this shape-matching structure maximizes the utilization of the effective contact area, ensuring long-term sealing performance.

[0036] A faucet includes a valve core base with a hollow pin, and further includes: At least one inlet pipe 23 and one outlet pipe 24, with the inlet end of each inlet pipe 23 connected to the water supply end, and the outlet end of each inlet pipe 23 and the inlet end of each outlet pipe 24 connected to a first mounting hole. Shower assembly 11 has its shower hose connected to the outlet end of water pipe 24. When the water valve 2 is arc-shaped, it provides space for the pull-out hose to pass through and move, maximizing the use of the extended cavity's cross-section. That is, while meeting functional requirements, it achieves the minimum dimensional space required.

[0037] The design of at least one inlet pipe should cover at least: Single-pipe mode: Suitable for single cold water taps (such as in public places), saving on hot water piping costs; Dual-pipe mode: Standard hot and cold water supply, with three separate paths for cold / hot / outlet water achieved through the three first mounting holes of the water valve 2 (e.g., Figure 1 (As shown).

[0038] In another embodiment, the faucet has two inlet pipes 23. When there are two inlet pipes 23 and three first mounting holes, the inlet ends of the two inlet pipes 23 are connected to the cold and hot water supply ends respectively, and the outlet ends of the two inlet pipes 23 and the inlet ends of the outlet pipes 24 are connected to one of the first mounting holes. The overall water system forms a modular assembly unit with the valve core base body 5 as the core. While ensuring independent cold and hot water passages, it significantly reduces the number of assembly parts and lowers the risk of leakage caused by multiple interface splicing.

[0039] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A valve trim base having a hollow pin, characterized by, include: The water valve is located in the hollow cavity of the mounting part of the faucet body assembly, and the water valve is provided with multiple first mounting holes. The valve core base body is located on the outside of the water valve, and the valve core base body is provided with multiple second mounting holes; Multiple hollow pins, each a column with a hollow interior; each hollow pin corresponds to a first mounting hole and a second mounting hole, with both ends of each hollow pin inserted into the corresponding first and second mounting holes respectively. Multiple sealing rings, all of which are cylindrical and hollow inside; each sealing ring corresponds to a hollow pin, and each sealing ring is inserted into the hollow hole of its corresponding hollow pin; one end of each sealing ring abuts against the bottom of its corresponding first mounting hole, and the other end abuts against the bottom of its corresponding second mounting hole. The valve core is located on the outside of the valve core base body and is connected to the valve core base body. The holes on the valve core correspond one-to-one with the second mounting holes, and each hole on the valve core is connected to its corresponding second mounting hole. A nut, which is tightened at the end of the hollow cavity, to secure the valve core; The limiting component is fixed inside the hollow cavity and located inside the water valve, abutting against the water valve.

2. The valve trim base with hollow pin of claim 1, wherein, The valve core base body is provided with multiple third mounting holes, and the valve core is provided with multiple mounting posts on the side opposite to the valve core base body. The mounting posts correspond one-to-one with the mounting holes, and each mounting post is inserted into its corresponding third mounting hole.

3. The valve trim base with a hollow pin of claim 1, wherein, The hollow cavity includes a main cavity and an extension cavity. The extension cavity is located inside the main cavity and is connected to the main cavity. The axis of the extension cavity intersects with that of the main cavity. The water valve is arc-shaped and located in the extension cavity. The limiting member is fixed in the extension cavity. The inner arc surface of the water valve is opposite to the limiting member. Both ends of the water valve abut against the limiting member. The outer arc surface of the water valve fits against the inner wall of the extension cavity. The valve core base body, valve core, and nut are all located in the main cavity.

4. The valve trim base with a hollow pin of claim 1, wherein, There are three holes on the valve core: a cold water hole, a hot water hole, and a water outlet hole.

5. The valve trim base with a hollow pin of claim 1, wherein, The valve core is in contact with the valve core base body, and the shapes of the contact surfaces of the two are matched.

6. The valve trim base with a hollow pin of claim 3, wherein, The outer arc surface of the water valve contacts the valve core base body, and the shapes of the contact surfaces of the two are matched.

7. A faucet, characterized by The valve core base comprising the hollow pin as described in any one of claims 1 to 6 further comprises: At least one inlet pipe and one outlet pipe, with the inlet end of each inlet pipe connected to the water supply end, and the outlet end of each inlet pipe and the inlet end of the outlet pipe connected to a first mounting hole. The shower set has a shower hose connected to the water outlet end of the water outlet pipe.

8. The faucet of claim 7, wherein There are two water inlet pipes.

Images