Plastic core seat of single-hole basin faucet

Abstract

The utility model discloses a plastic core seat of a single-hole basin faucet, which comprises an inner core seat and a sealing washer, a water outlet channel is arranged in the inner core seat, a water outlet communicated with the water outlet channel is arranged on the outer side wall of the upper end of the inner core seat, an accommodating cavity is concavely arranged at the water outlet of the inner core seat, and the sealing washer is positioned in the accommodating cavity; the containing cavity is a strip-shaped notch communicated to the outside of the top face of the inner core seat, the strip-shaped notch is a wedge-shaped groove with the groove depth decreasing progressively from top to bottom, the sealing gasket is located in the strip-shaped notch, the sealing gasket is a wedge-shaped sealing block with the thickness decreasing progressively from top to bottom and matched with the wedge-shaped groove, and the outer side face of the sealing gasket is an arc-shaped face protruding out of the strip-shaped notch. The bottom of the strip-shaped notch is provided with a tight sleeving seat in an outward protruding mode, the sealing gasket is provided with a tight sleeving hole, the tight sleeving seat extends into the tight sleeving hole, the sealing gasket can move up and down along the tight sleeving seat through the tight sleeving hole, and a water outlet groove communicated with the water outlet is formed in the outer side wall of the tight sleeving seat in an inward concave mode. Compared with the prior art, the sealing performance is better, and the water yield is larger.

Description

Technical Field

[0001] This utility model relates to the field of faucet technology, and in particular to a plastic core seat for a single-hole basin faucet. Background Technology

[0002] Traditional basin faucets are typically fixed to the basin, making them difficult to disassemble and resulting in high maintenance costs. Therefore, basin faucets that can be detached from the basin have emerged, such as the detachable faucet described in application number 2024202676520. This faucet includes a faucet body with a faucet tube, an inner core seat, and a water outlet tube. One end of the water outlet tube is perpendicularly connected to the outer wall of the faucet tube, with the axial direction of the faucet tube as the vertical direction. The inner core seat is located inside the upper end of the faucet tube and has an inlet pipe and a mounting base. The mounting base is located inside the lower end of the faucet tube, and the inlet pipe is mounted on the mounting base. The mounting base has an inlet channel that connects to the inlet pipe and leads to the lower end of the faucet tube. The aforementioned inner core seat also includes an upper seat body. The upper seat body has a water outlet that runs vertically through the water inlet pipe. A protrusion extending into the water outlet pipe body is provided on the outer wall of the upper seat body. A water outlet channel is provided on the side of the protrusion facing the water outlet pipe body, leading into the upper seat body and then upward to the outside of the top surface of the upper seat body. The water outlet pipe body is a pipe body with one end open and the other end closed. A hollow threaded tube with both ends open is installed on the closed surface of the water outlet pipe body. The first end of the hollow threaded tube passes through the closed end of the water outlet pipe body into the water outlet pipe body and is confined within the water outlet pipe body. The second end of the hollow threaded tube extends into the water outlet channel and is threadedly connected to the water outlet channel. The closed end face of the water outlet pipe body and the protrusion are sealed together by a sealing element. In application, one end of the hollow threaded tube extends out of the closed surface of the water outlet pipe body and the other end of the hollow threaded tube is confined within the hollow space of the water outlet pipe body. Then, the sealing element is fitted onto the end of the hollow threaded tube facing the faucet pipe body. Finally, the hollow threaded tube is screwed into the boss to connect, thus completing the assembly of the faucet pipe body and the water outlet pipe body.

[0003] The aforementioned faucet seal achieves a seal between the closed end face of the water outlet pipe and the boss. However, because the hollow threaded tube and the horizontal channel are connected by a threaded connection, water can still easily flow from the horizontal channel into the gap between the upper seat and the faucet pipe, resulting in poor sealing between the faucet pipe and the inner core seat. To avoid leakage, a faucet body with the water outlet pipe and the faucet pipe formed as a single piece is also widely applicable. In this case, the outer wall of the inner core seat has a recessed cavity corresponding to the water inlet of the water outlet pipe. A sealing gasket that slightly protrudes from the recess is placed inside this cavity. The sealing gasket has an opening that communicates with the water outlet channel. Water flows from the water outlet channel through the opening into the water outlet pipe. During installation, the inner core seat is inserted into the faucet pipe from bottom to top, ensuring a sealing fit between the sealing gasket and the faucet pipe. However, faucets equipped with this type of inner core seat typically have a chamber that tapers from bottom to top to facilitate installation. This design minimizes wear on the sealing gasket during upward installation. However, this results in a thicker faucet body corresponding to the recessed cavity, making the overall faucet body heavier. Therefore, lightweight thin-walled stainless steel straight tubes are now used as faucet bodies. However, the chambers of these thin-walled stainless steel straight tubes are straight channels with a uniform diameter. A limiting protrusion ring is provided on the inner side wall of the upper end of the channel. In this way, when the sealing gasket of the inner core seat is installed into the stainless steel thin-walled straight tube from bottom to top, the sealing gasket is sealed with the straight channel. As the inner core seat is pushed upward, the sealing gasket is constantly worn. The friction path between the sealing gasket and the straight channel is long, and the sealing gasket is easy to deform, resulting in poor sealing. At the same time, water flows directly from the outlet to the outlet pipe after passing through the outlet channel. The hollow spiral tube is small, which makes the water output of the outlet pipe small.

[0004] In view of this, the inventors of this case conducted in-depth research on the problem, which led to the creation of this case. Utility Model Content

[0005] The purpose of this utility model is to provide a plastic core seat for a single-hole basin faucet to solve the problems of poor sealing and low water flow of existing faucets.

[0006] To achieve its purpose, this utility model adopts the following technical solution:

[0007] A plastic core seat for a single-hole basin faucet includes an inner core seat and a sealing gasket. The inner core seat has a water outlet channel, and an outlet communicating with the water outlet channel is formed on the upper outer wall of the inner core seat. A receiving chamber is recessed at the outlet of the inner core seat, and the sealing gasket is located within the receiving chamber, with the outlet falling into the receiving chamber. A corresponding opening is formed on the sealing gasket at the outlet. The receiving chamber is a strip-shaped notch extending vertically and opening to the outside of the top surface of the inner core seat. The strip-shaped notch is a wedge-shaped groove with a depth decreasing from top to bottom. The sealing gasket is located within the strip-shaped notch. The sealing gasket is a wedge-shaped sealing block whose thickness decreases from top to bottom and matches the wedge groove. The side of the sealing gasket facing away from the bottom of the strip groove protrudes out of the strip groove and fits tightly against the inner side wall of the faucet body. The bottom of the strip groove is provided with a tightening seat protruding outward. The sealing gasket is provided with a tightening hole for the tightening seat to extend into and for the sealing gasket to move up and down along the tightening seat in the strip groove. The outer side wall of the tightening seat is provided with a water outlet groove recessed inward. The water outlet is within the range of the fitting hole and is connected to the water outlet groove. The tightening hole is the through-hole.

[0008] The upper outer wall of the inner core seat is recessed with the aforementioned strip-shaped notch extending to the top surface of the inner core seat. The strip-shaped notch has a square structure, and the wedge-shaped sealing block has a corresponding square structure.

[0009] The bottom of the groove is a convex arc surface that bulges outward. The wedge-shaped sealing block is a convex arc piece that bulges outward and extends along the circumferential direction of the inner core seat. The inner sidewall of the wedge-shaped sealing block fits against the convex arc surface, and the maximum distance between the outer sidewall of the wedge-shaped sealing block and the outer sidewall of the inner core seat is greater than or equal to the inner diameter of the faucet tube.

[0010] The top surface of the wedge-shaped sealing block is a force-bearing plane that extends along the circumferential direction of the inner core seat and is positioned opposite to the limiting protrusion ring.

[0011] The included angle between the inner wall and the outer wall of the wedge-shaped sealing block is 5°-15°.

[0012] The bottom surface of the clamping seat and the inner bottom surface of the clamping hole are relatively spaced to form a moving distance that allows the sealing gasket to move upward. The clamping seat is a hollow strip structure with an open bottom or top surface and extending in the vertical direction. The hollow cavity of the clamping seat forms the above-mentioned water outlet groove. The water outlet and the water outlet groove are on the same straight line, and the outer side wall of the clamping seat is located within the strip groove range. The water outlet groove is correspondingly a strip structure.

[0013] The clamping seat has two side blocks and two connecting blocks. The side blocks are strip-shaped structures extending vertically. The two side blocks are vertically set in the bottom of the strip-shaped notch and are spaced apart along the circumferential extension direction of the inner core seat. The connecting block is located between the upper or lower ends of the two side blocks. The bottom surface of the two side blocks and the inner bottom surface of the clamping hole have the aforementioned moving distance. The water outlet is located within the range between the two side blocks. The side blocks and the connecting block are fitted into the fitting hole. The outer wall of the inner core seat is recessed at the position between the two side blocks, and a water outlet groove extending vertically and communicating with the water outlet is provided. The two side blocks and the connecting block form a water outlet corresponding to and communicating with the water outlet groove and open at one end. The water outlet and the water outlet groove constitute the aforementioned water outlet groove.

[0014] The water outlet is located at one end of the strip-shaped notch facing away from the connecting block, or the water outlet falls between the two blocks.

[0015] The top surface of the inner core seat is recessed to provide a valve core chamber for the valve core to be installed inside, and the upper end of the valve core chamber is internally screwed with a pressure cap to confine the valve core within the valve core chamber.

[0016] The outer wall of the inner core seat is provided with a guide structure that extends to the outside of the top surface of the inner core seat and cooperates with the guide of the faucet tube body.

[0017] This invention relates to a plastic core seat for a single-hole basin faucet. In use, the fitting seat is aligned with the fitting hole of the sealing washer. The sealing washer is fitted over the fitting seat and embedded in the slotted groove. Pushing the sealing washer upwards causes it to move along the fitting seat, at which point the upper end of the sealing washer extends upwards beyond the slotted groove, while the lower end remains within the upper end of the slotted groove. Then, the inner core seat is aligned with the lower opening of the faucet tube and inserted into the faucet tube from bottom to top. Inside the faucet body, when the top surface of the sealing gasket encounters the limiting protrusion of the faucet pipe, the sealing gasket moves downward along the tightening seat as the inner core seat is pushed upward under the action of the limiting protrusion. Finally, the sealing gasket moves down until it is embedded in the strip-shaped notch. At this point, the outer end of the sealing gasket extends out of the strip-shaped notch, and its arc-shaped surface fits tightly against the inner wall of the faucet pipe. The open end of the water outlet facing the faucet pipe falls into the opening range of the sealing gasket, thus achieving a connection between the water outlet of the inner core seat and the inner wall of the faucet pipe. The sealing connection between the outlet and the groove prevents water from flowing onto the inner wall of the faucet body, resulting in better sealing and a larger water flow. Compared with existing technologies, since both the sealing gasket and the groove are wedge-shaped, the lower end of the sealing gasket is within the groove range during the upward pushing of the inner core into the faucet body. There is a certain gap between the outer wall of the sealing gasket and the inner wall of the faucet body, preventing friction and reducing the friction time. The shorter friction path also reduces the likelihood of deformation due to friction, further enhancing the sealing performance. Additionally, some water can enter the faucet body from the outlet, while other water can enter from the groove. The inlet end of the faucet body is aligned with and connected to the outlet and groove, allowing for larger designs at both ends, increasing the water flow and surface area. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the sealing gasket of this utility model when the part inside the strip notch moves upward.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of this utility model, omitting the sealing gasket.

[0021] Figure 4 This is a schematic diagram of the sealing gasket of this utility model. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below in conjunction with the accompanying drawings.

[0023] A plastic core holder for a single-hole basin faucet, such as Figures 1-4 As shown, the device includes an inner core seat 1 and a sealing gasket 2. The upper end of the inner core seat 1 has a water outlet channel, and the outer wall of the upper end of the inner core seat 1 has a water outlet 100 connected to the water outlet channel. The inner core seat 1 has a recessed accommodating chamber at the water outlet 100, and the sealing gasket 2 is located within the accommodating chamber, with the water outlet 100 falling into the accommodating chamber. The sealing gasket 2 has a corresponding opening at the water outlet 100. Specifically, the inner core seat 1 has a valve core block 11, a water outlet pipe body 12, and a mounting block 13. The valve core block 11, the outlet pipe body 12, and the mounting block 13 are integrally injection molded plastic core seats. The sealing gasket 2 is made of rubber. The outlet pipe body 12 is vertically arranged and has a through-tube structure. The valve core block 11 and the mounting block 13 are located at the upper and lower ends of the outlet pipe body 12, respectively. The top surface of the valve core block 11 has a recessed valve core chamber for the valve core to be installed. The valve core has a valve core outlet 100 for water to flow out and a valve core inlet for water to flow in. The bottom of the valve core chamber corresponds to the valve core outlet 100. A water outlet channel communicating with the outlet 100 is recessed at position 00, and a water inlet channel communicating with the outlet pipe body 12 is recessed at the corresponding valve core inlet position. An inlet port communicating with the outlet pipe body 12 is formed through the mounting block 13 from top to bottom. The outer diameter of the valve core seat and the mounting block 13 matches the inner diameter of the faucet pipe body. The faucet pipe body and the outlet pipe body 12 are integrally formed. Both the faucet pipe body and the outlet pipe body 12 are hollow pipes open at both ends. The faucet pipe body is vertically installed and is a straight cylindrical pipe. The upper inner wall of the faucet pipe body is provided with a limiting protrusion in the form of a closed ring. The water outlet pipe body 12 is horizontally arranged on the outer wall of the faucet pipe body and is connected to the faucet pipe body. The faucet pipe body and the water outlet pipe body 12 are arranged perpendicularly. That is, the outer wall of the faucet pipe body is provided with a water outlet corresponding to the position of the water outlet pipe body 12 and connected to the water outlet pipe body 12. The water outlet is within the opening range. The specific structure of the faucet pipe body and the water outlet pipe body, as well as the specific structure and working method of the valve core, are all technologies known to those skilled in the art. In application, the inner core seat 1 extends from the bottom opening of the faucet body upwards, and the sealing gasket 2 seals the valve core block 11 with the upper inner wall of the faucet body. The mounting block 13 is engaged in the lower end of the faucet body. In use, water enters the inlet pipe body from the inlet, passes through the inlet channel, enters the valve core from the valve core inlet, flows from the valve core outlet 100 to the outlet channel, flows through the outlet port 100, and finally flows out from the outlet pipe body.

[0024] The improvement of this invention lies in the following: the accommodating chamber is a strip-shaped notch 200 extending vertically and reaching the top surface of the inner core 1. The strip-shaped notch 200 is a wedge-shaped groove with a depth decreasing from top to bottom. The sealing gasket 2 is located within the strip-shaped notch 200, and the sealing gasket 2 is a wedge-shaped sealing block with a thickness decreasing from top to bottom and matching the wedge-shaped groove. The side of the sealing gasket 2 facing away from the bottom of the strip-shaped notch 200 protrudes from the strip-shaped notch 200 and is an arc-shaped surface that fits tightly against the inner side wall of the faucet body. Specifically, the outer side wall of the inner core block 11 is recessed with the strip-shaped notch 200 that reaches the top surface of the inner core block 11. The strip-shaped notch 200 has a rectangular structure and is wedge-shaped. The wedge-shaped sealing block has a rectangular structure. The bottom of the groove 200 is an outwardly convex arc surface. The wedge-shaped sealing block is an outwardly convex arc plate that extends along the circumferential direction of the inner core block 11. The inner sidewall of the wedge-shaped sealing block fits against the convex arc surface, and the maximum distance between the outer sidewall of the wedge-shaped sealing block and the outer sidewall of the inner core block 11 is greater than or equal to the inner diameter of the faucet tube, so that the outer sidewall of the inner core block 11 and the inner sidewall of the faucet tube can be sealed together. Preferably, the included angle between the inner sidewall and the outer sidewall of the wedge-shaped sealing block is 5°-15°; specifically, the included angle between the inner sidewall and the outer sidewall of the wedge-shaped sealing block is 10°. In application, before inserting the inner core seat 1 into the faucet tube, the upper end of the wedge-shaped sealing block extends from the open top surface of the strip-shaped notch 200. Since the depth of the strip-shaped notch 200 decreases from top to bottom, and the thickness of the wedge-shaped sealing block also decreases from top to bottom, the lower end of the wedge-shaped sealing block is embedded in the upper end of the strip-shaped notch 200. There is a gap between the outer wall of the lower end of the wedge-shaped sealing block and the outer wall of the inner core block 11. The lower end of the wedge-shaped sealing block falls into the strip-shaped notch 200, and then... The inner core seat 1 is inserted from bottom to top through the open bottom surface of the faucet tube. When the top surface of the wedge-shaped sealing block encounters the limiting protrusion of the faucet tube, the sealing gasket 2 moves downward along the strip notch 200 under the force of the limiting protrusion until it is completely embedded in the strip notch 200. The arc surface seals against the inner wall of the faucet tube, thus sealing the outlet 100 of the inner core seat 1 with the inner wall of the faucet tube, making it difficult for water flowing out of the outlet to enter the inner wall of the faucet tube. In this way, during the upward movement of the inner core seat 1, the lower end of the sealing gasket 2 is within the strip-shaped notch 200, and there is a certain gap between the outer wall of the sealing gasket 2 and the inner wall of the faucet tube. The sealing gasket 2 is not easy to rub against the inner wall of the faucet tube. When the top surface of the sealing gasket 2 encounters the limiting protrusion ring, the sealing gasket 2 moves down to seal with the inner wall of the faucet tube. At this time, the sealing gasket has reached the upper end of the faucet tube. This reduces the path of friction between the sealing gasket 2 and the inner wall of the faucet tube, making the sealing gasket less prone to friction deformation and damage, and improving the sealing performance between the faucet tube and the inner core seat 1.Furthermore, the included angle between the inner wall and the outer wall of the wedge-shaped sealing block is set to 5°-15°, so that the wedge-shaped sealing block has a certain thickness and a certain hardness, making it less prone to deformation when subjected to the action of the limiting protrusion ring.

[0025] The bottom of the strip-shaped notch 200 protrudes outwards and is provided with a fitting seat 3. The sealing gasket 2 has a fitting hole for the fitting seat 3 to extend into and for the sealing gasket 2 to move up and down within the strip-shaped notch 200 along the fitting seat 3. The outer wall of the fitting seat 3 has an inwardly recessed water outlet groove, with the water outlet located within the fitting hole and connected to the water outlet groove. The fitting hole is the aforementioned through-hole. Specifically, the bottom surface of the fitting seat 3 and the inner bottom surface of the fitting hole are spaced apart to form a moving distance that allows the sealing gasket to move upwards. The fitting seat is... The hollow strip structure with an open bottom or top surface forms the aforementioned water outlet groove in the hollow cavity of the clamping seat. The water outlet and the water outlet groove are on the same straight line. The clamping seat is a strip-shaped square structure extending in the vertical direction. The outer wall of the clamping seat is located within the range of the strip-shaped notch 200. The water outlet groove is correspondingly a strip-shaped square structure. That is, the clamping seat 3 has side blocks 31 and connecting blocks 32. There are two side blocks 31. The side blocks 31 are strip-shaped structures extending in the vertical direction, and the thickness of the side blocks 31 extends from top to bottom along the extension direction of the groove depth of the strip-shaped notch 200. Decreasingly, the two side blocks 31 are vertically arranged in the bottom of the strip-shaped notch 200, and the two side blocks 31 are spaced apart along the circumferential extension direction of the inner core seat 1. The connecting block 32 is located between the upper ends of the two side blocks 31, and the two side blocks 31 and the connecting block 32 form a hollow rectangular structure with an open bottom. The fitting hole is correspondingly a rectangular structure, and the water outlet 100 is located below the two side blocks 31. The bottom surface of the side block 31 and the inner bottom surface of the fitting hole are spaced apart to form the aforementioned moving distance that allows the sealing gasket 2 to move upward. The side blocks 31 and the connecting block The body 32 is fitted into the fitting hole, and the water outlet falls into the lower end range of the fitting hole and is within the range of movement distance. The inner core block 11 is recessed between the two side blocks 31 and has a water outlet groove that extends downward into the water outlet 100. The two side blocks 31 and the connecting block 32 form a water outlet that extends from the inside to the outside and has an open bottom surface and is correspondingly connected to the water outlet groove. The water outlet has a strip-shaped square structure that extends from top to bottom. The water outlet and the water outlet groove constitute the above-mentioned water outlet groove. The water outlet of the faucet pipe is also a strip-shaped structure and falls into the range of the fitting hole. The above embodiment is the structure when the bottom surface of the clamping seat is open and the water outlet is below the clamping seat 3; if the top surface of the clamping seat is open and the water outlet is above the clamping seat 3, the difference from the above structure of the clamping seat 3 is that the connecting block 32 is located on the lower end of the two side blocks 31, the water outlet 100 is located above the two side blocks 31, the water outlet falls into the upper range of the fitting hole, and the movement distance falls into the lower range of the fitting hole; the water outlet can also be set between the two side blocks, and the movement distance falls into the lower range of the fitting hole.In application, the sealing gasket 2 is fitted onto the outer wall of the clamping seat 3. When the top surface of the sealing gasket 2 encounters the limiting protrusion of the faucet pipe, the sealing gasket moves downward along the clamping seat 3. The clamping seat 3 has a rectangular structure extending from top to bottom, making it difficult for the sealing gasket to shift downward. Moreover, part of the water flowing out of the outlet can flow radially out of the outlet, while the other part can enter the outlet groove and flow out from the outlet groove. The outlet groove is connected to the outlet and has a strip-shaped structure, which can make the water flow volume larger. The water outlet pipe does not need to go through a hollow threaded pipe for water to flow out, and the diameters of the two ends of the water outlet pipe can be set to be larger, resulting in a larger water flow and a larger water outlet area. Furthermore, the clamping seat 3 provides the sealing gasket 2 with upward movement space, making it difficult for the sealing gasket 2 to fall out of the strip-shaped notch 200.

[0026] In this invention, a plastic core seat for a single-hole basin faucet is used by aligning the tightening seat 3 with the tightening hole of the sealing washer 2, so that the sealing washer 2 is fitted outside the tightening seat and embedded in the strip-shaped notch 200. The sealing washer 2 is then pushed upwards, moving it along the movement distance until the bottom surfaces of the two side blocks 31 are in contact with the inner bottom surfaces of the fitting hole. The movement of the sealing washer is then stopped. At this point, the upper end of the sealing washer extends upwards beyond the strip-shaped notch 200, and the lower end of the sealing washer 2 is within the upper end of the strip-shaped notch 200. Then, the inner core seat 1 is aligned with the faucet... The lower end of the faucet tube is open. The inner core seat 1 extends into the faucet tube from the lower end of the open end, aligned with the upper end. When the top surface of the sealing washer 2 encounters the limiting protrusion of the faucet tube, the inner core seat 1 is pushed upward under the action of the limiting protrusion. During this process, the sealing washer 2 moves downward along the tightening seat 3. Finally, the sealing washer 2 moves downward and is embedded in the strip notch 200. At this time, the outer end of the sealing washer 2 extends out of the strip notch 200, and the arc-shaped surface fits tightly against the inner wall of the faucet tube. The water outlet of the faucet tube falls into the sealing washer. Within the opening range of 2, a sealing connection is achieved between the outlet of the inner core seat and the inner wall of the faucet body. Water flowing from the outlet and the outlet groove is less likely to flow onto the inner wall of the faucet body, resulting in better sealing and a larger water flow. Compared to existing technologies, since both the sealing washer 2 and the strip notch 200 are wedge-shaped structures, during the upward pushing of the inner core seat 1 into the faucet body, the lower end of the sealing washer 2 is within the strip notch 200 range, and there is a certain gap between the outer wall of the sealing washer and the inner wall of the faucet body. It will rub against the inner wall of the faucet pipe, reducing the friction time between the sealing gasket 2 and the inner wall of the faucet pipe. The friction path is shorter, resulting in better sealing between the faucet pipe and the inner core seat 1. In addition, part of the water flow can enter the water outlet pipe from the outlet, and another part of the water flow can enter the water outlet pipe from the water outlet groove. The water inlet end of the water outlet pipe is connected to the water outlet and the water outlet groove, so that both ends of the water outlet pipe can be designed to be larger, which is conducive to increasing the water output and the water outlet area of ​​the water outlet pipe.

[0027] In this invention, the top surface of the wedge-shaped sealing block is preferably a force-bearing plane 300 extending along the circumferential direction of the inner core seat 1 and positioned opposite to the limiting protrusion ring. In application, since both the top and bottom surfaces of the wedge-shaped sealing block and the limiting protrusion ring are flat, when the wedge-shaped sealing block is subjected to the force of the limiting protrusion ring, the top surface of the wedge-shaped sealing block and the bottom surface of the limiting protrusion ring are in surface-to-surface contact. This prevents the wedge-shaped sealing block from deforming, and the top surface of the wedge-shaped sealing block has a certain force-bearing area, making it easier for the wedge-shaped sealing block to move downwards.

[0028] In this invention, an advantageous feature is that the outer wall of the inner core seat 1 is provided with a guide structure that extends to the outside of the top surface of the inner core seat 1 and guides and cooperates with the faucet tube body. Specifically, the outer wall of the valve core block 11 is recessed with a guide groove that extends to the outside of the top surface of the valve core block 11, and the strip-shaped notch 200 is arranged opposite to the guide groove. The inner wall of the faucet tube body is provided with a guide strip that can extend into the guide groove. The guide groove and the guide strip constitute the aforementioned guide structure. In application, the guide strip of the faucet tube body is aligned with the guide groove of the valve core block 11, and then the inner core seat 1 is inserted into the faucet tube body from bottom to top, which facilitates the quicker alignment and insertion of the inner core seat 1 into the faucet tube body, making installation simple and convenient.

[0029] In this novel design, an advantageous feature is that the upper end of the valve core chamber is internally threaded with a pressure cap (not shown in the figure) to confine the valve core within the valve core chamber. Specifically, the upper inner wall of the valve core chamber has an internal thread 400, and the pressure cap has an external thread corresponding to the internal thread 400, which engages with the internal thread. Furthermore, the pressure cap has a through-hole at the position corresponding to the valve stem of the valve core, allowing the valve stem to extend beyond the top surface of the pressure cap. In application, the valve core is vertically placed inside the valve core chamber, with the valve stem extending upwards. The valve stem is then inserted into the through-hole of the pressure cap, and the pressure cap is screwed onto the upper end of the valve core block 11 using the engagement of the internal and external threads, thus confining the valve core. With this structure, the pressure cap is connected to the inner core seat 1. Compared to the prior art where the pressure cap is screwed to the upper end of the faucet body, this connection provides a tighter seal on the valve core, resulting in a better seal between the valve core and the valve core chamber.

[0030] The product form of this utility model is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this utility model.

Claims

1. A plastic core seat for a single-hole basin faucet, comprising an inner core seat and a sealing gasket, wherein the inner core seat has a water outlet channel, and an outlet communicating with the water outlet channel is formed on the upper outer wall of the inner core seat; a receiving chamber is recessed in the inner core seat at the outlet, the sealing gasket is located in the receiving chamber, and the outlet falls into the receiving chamber; the sealing gasket has a corresponding opening at the outlet; characterized in that: The aforementioned accommodating chamber is a strip-shaped notch extending vertically and opening to the top surface of the inner core seat. The strip-shaped notch is a wedge-shaped groove whose depth decreases from top to bottom. The aforementioned sealing gasket is located within the strip-shaped notch, and the aforementioned sealing gasket is a wedge-shaped sealing block whose thickness decreases from top to bottom and matches the wedge-shaped groove. The side of the sealing gasket facing away from the bottom of the strip-shaped notch protrudes out of the strip-shaped notch and is an arc-shaped surface that fits tightly against the inner side wall of the faucet body. The bottom of the strip-shaped notch is provided with a fitting seat protruding outward. The aforementioned sealing gasket has a fitting hole for the fitting seat to extend into and for the sealing gasket to move up and down along the fitting seat within the strip-shaped notch. The outer side wall of the aforementioned fitting seat is recessed inward with a water outlet groove. The water outlet is located within the fitting hole range and is connected to the water outlet groove. The aforementioned fitting hole is the aforementioned through-hole.

2. The plastic core base of a single-hole basin faucet according to claim 1, characterized in that: The upper outer wall of the inner core seat is recessed with the aforementioned strip-shaped notch extending to the top surface of the inner core seat. The strip-shaped notch has a square structure, and the wedge-shaped sealing block has a corresponding square structure.

3. The plastic core seat of a single-hole basin faucet according to claim 2, characterized in that: The bottom of the groove is a convex arc surface that bulges outward. The wedge-shaped sealing block is a convex arc piece that bulges outward and extends along the circumferential direction of the inner core seat. The inner sidewall of the wedge-shaped sealing block fits against the convex arc surface, and the maximum distance between the outer sidewall of the wedge-shaped sealing block and the outer sidewall of the inner core seat is greater than or equal to the inner diameter of the faucet tube.

4. The plastic core base of a single-hole basin faucet according to claim 2, characterized in that: The top surface of the wedge-shaped sealing block is a force-bearing plane that extends along the circumferential direction of the inner core seat and is positioned opposite to the limiting protrusion ring.

5. The plastic core seat of a single-hole basin faucet according to claim 1, characterized in that: The included angle between the inner wall and the outer wall of the wedge-shaped sealing block is 5°-15°.

6. The plastic core seat of a single-hole basin faucet according to claim 1, characterized in that: The bottom surface of the clamping seat and the inner bottom surface of the clamping hole are relatively spaced to form a moving distance that allows the sealing gasket to move upward. The clamping seat is a hollow strip structure with an open bottom or top surface and extending in the vertical direction. The hollow cavity of the clamping seat forms the above-mentioned water outlet groove. The water outlet and the water outlet groove are on the same straight line, and the outer side wall of the clamping seat is located within the strip groove range. The water outlet groove is correspondingly a strip structure.

7. The plastic core seat of a single-hole basin faucet according to claim 6, characterized in that: The clamping seat has two side blocks and two connecting blocks. The side blocks are strip-shaped structures extending vertically. The two side blocks are vertically set in the bottom of the strip-shaped notch and are spaced apart along the circumferential extension direction of the inner core seat. The connecting block is located between the upper or lower ends of the two side blocks. The bottom surface of the two side blocks and the inner bottom surface of the clamping hole have the aforementioned moving distance. The water outlet is located within the range between the two side blocks. The side blocks and the connecting block are fitted into the fitting hole. The outer wall of the inner core seat is recessed at the position between the two side blocks, and a water outlet groove extending vertically and communicating with the water outlet is provided. The two side blocks and the connecting block form a water outlet corresponding to and communicating with the water outlet groove and open at one end. The water outlet and the water outlet groove constitute the aforementioned water outlet groove.

8. The plastic core seat of a single-hole basin faucet according to claim 7, characterized in that: The water outlet is located at one end of the strip-shaped notch facing away from the connecting block, or the water outlet falls between the two blocks.

9. The plastic core seat of a single-hole basin faucet according to claim 1, characterized in that: The top surface of the inner core seat is recessed to provide a valve core chamber for the valve core to be installed inside, and the upper end of the valve core chamber is internally screwed with a pressure cap to confine the valve core within the valve core chamber.

10. The plastic core seat of a single-hole basin faucet according to claim 1, characterized in that: The outer wall of the inner core seat is provided with a guide structure that extends to the outside of the top surface of the inner core seat and cooperates with the guide of the faucet tube body.

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