Concealed faucet capable of being flexibly produced and multi-water-outlet concealed faucet

Abstract

The utility model provides a concealed faucet capable of being flexibly produced and a concealed faucet with multiple water outlets. The concealed faucet comprises a pre-buried box body, a valve element seat detachably installed in the pre-buried box body and a water inlet and outlet universal connector. A hot water passing hole, a cold water passing hole and at least one water outlet passing hole are formed in the side wall of the valve element seat, a plurality of first abutting faces are formed on the side wall of the valve element seat, and the hot water passing hole, the cold water passing hole and each water outlet passing hole are all located in the corresponding first abutting faces. A receding through hole is formed in the position, corresponding to each first abutting face, of the side wall of the pre-buried box body in a penetrating mode, each receding through hole is provided with a water inlet and outlet universal connector, and each water inlet and outlet universal connector is provided with a first limiting part located in the pre-buried box body and a connecting part extending out of the pre-buried box body. And a second abutting surface which is in sealing contact with the first abutting surface is formed on the first limiting part. The utility model has the advantages that the use flexibility can be greatly improved, and flexible expansion, production and manufacturing can be conveniently carried out according to actual requirements.

Description

[Technical Field]

[0001] This utility model relates to the field of concealed faucet technology, and in particular to a concealed faucet that can be flexibly produced and a concealed faucet with multiple water outlets. [Background Technology]

[0002] Concealed faucets are installed within the wall, with only the operating handle exposed on the wall surface. They offer advantages such as aesthetics and space-saving design. However, Chinese invention patent application CN202111623550.5 discloses a faucet pre-embedded box, in which the box body, inlet, outlet, first and second abutment seats are integrally molded from PPR, copper alloy, or stainless steel. This structural design significantly reduces usability, preventing flexible expansion as needed. In view of these problems, the inventors of this case conducted in-depth research, leading to this invention. [Utility Model Content]

[0003] The technical problem to be solved by this utility model is to provide a concealed faucet that can be flexibly produced and a multi-outlet concealed faucet, which solves the problem that the existing structural design greatly reduces the flexibility of use and cannot be flexibly expanded according to actual needs during use.

[0004] This utility model is implemented as follows:

[0005] Firstly, a concealed faucet that can be flexibly manufactured includes a pre-embedded box, a valve core seat that can be detachably installed in the pre-embedded box, and a universal inlet and outlet water connector.

[0006] The side wall of the valve core seat is provided with a hot water passage hole, a cold water passage hole and at least one outlet water passage hole. The side wall of the valve core seat forms a plurality of first abutment surfaces. The hot water passage hole, the cold water passage hole and each outlet water passage hole are located on a corresponding first abutment surface. The side wall of the pre-embedded box is provided with a clearance through hole corresponding to each first abutment surface. Each clearance through hole is equipped with a universal inlet and outlet water connector. The universal inlet and outlet water connector has a first limiting part located inside the pre-embedded box and a connecting part extending outside the pre-embedded box. A second abutment surface is formed on the first limiting part to seal and contact the first abutment surface.

[0007] Furthermore, the sidewall of the valve core seat has four first abutment surfaces, the included angle between two adjacent first abutment surfaces is 90°, and each first abutment surface is provided with a sealing groove, and a sealing ring is provided in the sealing groove.

[0008] Furthermore, the second abutment surface is an inclined surface that gradually approaches the valve core seat from top to bottom, and the first abutment surface is an inclined surface that matches the second abutment surface.

[0009] Furthermore, a limiting block is formed at the lower end of the second abutment surface.

[0010] Furthermore, the valve core seat is integrally formed with several connecting pieces, each of which is locked to the pre-embedded box body by a locking component.

[0011] Secondly, a flexible, multi-outlet concealed faucet includes a pre-embedded box, at least two valve core seats that can be detachably installed in the pre-embedded box, a universal inlet and outlet connector, and a valve core seat connecting connector; a partition is provided between the two valve core seats in the pre-embedded box.

[0012] The side wall of any one of the valve core seats is provided with a hot water passage hole, a cold water passage hole and at least one outlet water passage hole, and the side wall of the other valve core seat is provided with an inlet water passage hole and at least one outlet water passage hole. The side wall of each valve core seat is formed with a plurality of first abutting surfaces, and the hot water passage hole, cold water passage hole, outlet water passage hole and inlet water passage hole are all located on a corresponding first abutting surface.

[0013] The side wall of the pre-embedded box is provided with a clearance through hole corresponding to each first abutment surface. Each clearance through hole is equipped with a universal water inlet and outlet connector. The universal water inlet and outlet connector has a first limiting part located inside the pre-embedded box and a connecting part extending outside the pre-embedded box. A second abutment surface is formed on the first limiting part that is in sealing contact with the first abutment surface.

[0014] A through hole is provided through the partition plate, and one end of the valve core seat connecting joint forms a third abutment surface that is in sealing contact with the first abutment surface corresponding to the water outlet hole of any valve core seat. One end of the valve core seat connecting joint forms a fourth abutment surface that is in sealing contact with the first abutment surface corresponding to the water inlet hole of another valve core seat.

[0015] Furthermore, each valve core seat has four first abutment surfaces on its sidewall, with an included angle of 90° between two adjacent first abutment surfaces, and a sealing groove is provided around each first abutment surface, with a sealing ring provided in the sealing groove.

[0016] Furthermore, the second, third, and fourth abutting surfaces are all inclined surfaces that gradually approach the valve core seat from top to bottom, and the first abutting surface is an inclined surface that matches the second, third, or fourth abutting surface.

[0017] Furthermore, finite blocks are formed at the lower ends of the second, third, and fourth abutment surfaces.

[0018] Furthermore, the valve core seat connecting joint has a second limiting portion located on one side of the partition and a connecting portion extending to the other side of the partition.

[0019] By adopting the technical solution of this utility model, at least the following beneficial effects are achieved:

[0020] 1. The design of the concealed faucet includes a pre-embedded box, a valve core seat that can be detachably installed in the pre-embedded box, and a universal inlet / outlet connector. The universal inlet / outlet connector is a standard connector that can be used for both inlet and outlet water. This allows for flexible selection of different pre-embedded boxes, one or more valve core seats, and the required number of universal inlet / outlet connectors to assemble the concealed faucet according to different inlet and outlet water requirements. This greatly improves the flexibility of use and allows for easy expansion according to actual needs. At the same time, in the actual manufacturing process, it can be flexibly produced according to the actual needs of customers.

[0021] 2. The valve core seat and each inlet and outlet universal connector are connected by a first abutting surface and a second abutting surface to achieve a sealing contact, which simplifies the assembly process and improves assembly efficiency.

[0022] 3. The pre-embedded box, valve core seat and inlet / outlet universal connector each have relatively simple structures, making them easy to manufacture. The entire concealed faucet uses fewer accessories, which helps to reduce costs. [Attached Image Description]

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is an overall structural diagram of the concealed faucet in Embodiment 1 of this utility model;

[0025] Figure 2 This is a cross-sectional view of the concealed faucet in Embodiment 1 of this utility model;

[0026] Figure 3 This is a structural diagram of the concealed faucet in Embodiment 1 of this utility model after the mixing valve core has been removed;

[0027] Figure 4 This is a structural diagram of the valve core seat in this utility model;

[0028] Figure 5 This is a structural diagram of the universal water inlet and outlet connector in this utility model;

[0029] Figure 6 This is an overall structural diagram of the multi-outlet concealed faucet in Embodiment 2 of this utility model;

[0030] Figure 7 This is a cross-sectional view of the multi-outlet concealed faucet in Embodiment 2 of this utility model;

[0031] Figure 8 This is a structural diagram of the multi-outlet concealed faucet in Embodiment 2 of this utility model after removing the mixing valve core and the water distribution valve core;

[0032] Figure 9This is a structural diagram of the valve core seat connecting joint in Embodiment 2 of this utility model;

[0033] Figure 10 This is a structural diagram of the pre-embedded box in Embodiment 2 of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] Pre-embedded box 1, clearance through hole 11, partition 12, connecting through hole 121;

[0036] Valve core seat 2, hot water passage hole 21, cold water passage hole 22, water outlet passage hole 23, first top surface 24, sealing groove 25, connecting piece 26, water inlet passage hole 27;

[0037] The universal water inlet / outlet connector 3 includes a first limiting part 31, a second abutting surface 311, a limiting block 312, and a connecting part 32.

[0038] Sealing ring 4;

[0039] Locking component 5;

[0040] Mixing valve core 6;

[0041] Valve core seat connecting joint 7, third abutting surface 71, fourth abutting surface 72, second limiting part 73, connecting part 74;

[0042] Water distribution valve core 8.

Detailed Implementation Methods

[0043] To better understand the technical solution of this utility model, the technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] It should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing these embodiments and for 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. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0045] Example 1

[0046] Please see Figures 1 to 5As shown, this utility model provides a concealed faucet that can be flexibly manufactured. The concealed faucet includes a pre-embedded box 1, a valve core seat 2 that can be detachably installed in the pre-embedded box 1, and a universal inlet and outlet connector 3.

[0047] The sidewall of the valve core seat 2 is provided with a hot water passage hole 21, a cold water passage hole 22, and at least one outlet water passage hole 23. The hot water passage hole 21 is for supplying hot water, the cold water passage hole 22 is for supplying cold water, and the outlet water passage hole 23 is for discharging mixed water (hot and cold water). The sidewall of the valve core seat 2 forms several first abutment surfaces 24, and the hot water passage hole 21, the cold water passage hole 22, and each outlet water passage hole 23 are located on a corresponding first abutment surface 24. The sidewall of the pre-embedded housing 1 corresponds to each first abutment surface. Each surface 24 is provided with a clearance through hole 11, and each clearance through hole 11 is equipped with a universal water inlet / outlet connector 3. The universal water inlet / outlet connector 3 has a first limiting part 31 located inside the pre-embedded box 1 and a connecting part 32 extending outside the pre-embedded box 1. The first limiting part 31 is used to limit the universal water inlet / outlet connector 3 so that the universal water inlet / outlet connector 3 will not leave the pre-embedded box 1. The connecting part 32 is used to connect with a pipe (not shown) inside the wall. A second abutting surface 311 is formed on the first limiting part 31 to seal and contact the first abutting surface 24.

[0048] In practical use, the concealed faucet of this utility model can be pre-embedded in the wall with the pre-embedded box 1, and the connecting parts 32 of each universal water inlet and outlet connector 3 can be pre-connected to the pipes in the wall through the clearance through hole 11 inside the pre-embedded box 1. When installing the valve core seat 2, the valve core seat 2 needs to be installed into the pre-embedded box 1 from the outside to the inside. During the installation of the valve core seat 2, each first abutting surface 24 on the valve core seat 2 will push the corresponding universal water inlet and outlet connector 3 outward. Since the universal water inlet and outlet connector 3 has a first limiting part 31 located inside the pre-embedded box 1, after the valve core seat 2 is installed in place, each first abutting surface 24 can abut and seal with the second abutting surface 311 of the corresponding universal water inlet and outlet connector 3.

[0049] By adopting the above-described technical solution of this utility model, at least the following beneficial effects are achieved:

[0050] 1. The concealed faucet design includes a pre-embedded box 1, a valve core seat 2 detachably installed within the pre-embedded box 1, and a universal inlet / outlet connector 3. The universal inlet / outlet connector 3 is a standard connector that can be used for both inlet and outlet water flow. This allows for flexible assembly of different pre-embedded boxes 1, one or more valve core seats 2, and the required number of universal inlet / outlet connectors 3 according to different inlet and outlet water requirements, greatly improving usability and facilitating expansion as needed. Furthermore, in manufacturing, production can be flexibly tailored to customer needs. For example, if a customer only needs the universal inlet / outlet connector 3, only the universal inlet / outlet connector 3 can be produced; if only the valve core seat 2 is needed, only the valve core seat 2 can be produced; and if only the pre-embedded box 1 is needed, only the pre-embedded box 1 can be produced. Customers only need to purchase the corresponding components according to their actual needs, rather than purchasing the entire concealed faucet.

[0051] 2. The valve core seat 2 and each inlet and outlet universal connector 3 are connected by the first abutting surface 24 and the second abutting surface 311 abutting and sealing contact, which simplifies the assembly process and improves assembly efficiency.

[0052] 3. The pre-embedded box body 1, valve core seat 2 and inlet / outlet universal connector 3 each have relatively simple structures, making them easy to manufacture. The entire concealed faucet uses fewer accessories, which helps to reduce costs.

[0053] In Embodiment 1 of this utility model, the sidewall of the valve core seat 2 has four first abutment surfaces 24, with an included angle of 90° between two adjacent first abutment surfaces 24. Each first abutment surface 24 is provided with a sealing groove 25, and a sealing ring 4 is provided within the sealing groove 25. This ensures a better sealing effect after the first abutment surface 24 comes into contact with the second abutment surface 311 of the universal inlet / outlet connector 3. In a specific implementation of this utility model, the embedded box 1 is a square box, and each of the four sidewalls of the embedded box 1 has corresponding clearance through holes 11 to facilitate the installation of the universal inlet / outlet connector 3 on each of the four sidewalls of the embedded box 1. The sealing ring 4 can be a rubber sealing ring. Meanwhile, since the hot water passage 21, cold water passage 22 and outlet water passage 23 are all located on the same first abutment surface 24, when the valve core seat 2 has only one outlet water passage 23, one of the first abutment surfaces 24 can be left without a water passage; while when the valve core seat 2 has two outlet water passages 23, the outlet water passages 23 can be provided on both of the first abutment surfaces 24.

[0054] In the first embodiment of this utility model, the second abutment surface 311 is an inclined surface that gradually approaches the valve core seat 2 from top to bottom, and the first abutment surface 24 is an inclined surface that matches the second abutment surface 311. By adopting the above inclined surface structure design, it is not only convenient to assemble the valve core seat 2, but also ensures that the first abutment surface 24 of the valve core seat 2 can reliably abut against the second abutment surface 311 after assembly, thereby ensuring sealing.

[0055] In one embodiment of this utility model, a limiting block 312 is formed at the lower end of the second abutment surface 311. The limiting block 312 is used to limit the assembly of the valve core seat 2.

[0056] In Embodiment 1 of this utility model, a plurality of connecting pieces 26 are integrally formed on the valve core seat 2. Each connecting piece 26 is locked to the pre-embedded housing 1 by a locking member 5, wherein the locking member 5 can be a bolt or a screw. By forming multiple connecting pieces 26 on the valve core seat 2 and using locking members 5 to lock the connecting pieces 26 to the pre-embedded housing 1, the stability of the valve core seat 2 after assembly can be ensured, preventing the valve core seat 2 from loosening during use.

[0057] In a specific implementation of this utility model, the concealed faucet also includes a mixing valve core 6 installed on the valve core seat 2. The mixing valve core 6 is a common component of faucets, and its specific structure and working principle are well known to those skilled in the art, so it will not be described in detail here. During operation, the hot water supplied by the hot water passage 21 and the cold water supplied by the cold water passage 22 are mixed inside the mixing valve core 6 and then the mixed water is output through the outlet passage 23.

[0058] Example 2

[0059] Please see Figures 4 to 10 As shown, this utility model discloses a multi-outlet concealed faucet that can be flexibly manufactured. The multi-outlet concealed faucet includes a pre-embedded box 1, at least two valve core seats 2 that can be detachably installed in the pre-embedded box 1, a universal inlet and outlet connector 3, and a valve core seat connecting connector 7. A partition 12 is provided between the two valve core seats 2 inside the pre-embedded box 1, that is, the partition 12 is used to separate the two adjacent valve core seats 2.

[0060] Each valve core seat 2 has a hot water passage hole 21, a cold water passage hole 22, and at least one outlet water passage hole 23 on its side wall. The other valve core seat 2 has an inlet water passage hole 27 and at least one outlet water passage hole 23 on its side wall. The hot water passage hole 21 is used to allow hot water to pass through, the cold water passage hole 22 is used to allow cold water to pass through, the outlet water passage hole 23 is used to output the mixed water after the hot and cold water are mixed, and the inlet water passage hole 27 is used to allow the mixed water to pass through. Each valve core seat 2 has a plurality of first abutment surfaces 24 formed on its side wall. The hot water passage hole 21, the cold water passage hole 22, the outlet water passage hole 23, and the inlet water passage hole 27 are all located on a corresponding first abutment surface 24.

[0061] The side wall of the pre-embedded box 1 is provided with a clearance through hole 11 corresponding to each first abutment surface 24. Each clearance through hole 11 is equipped with a universal water inlet / outlet connector 3. The universal water inlet / outlet connector 3 has a first limiting part 31 located inside the pre-embedded box 1 and a connecting part 32 extending outside the pre-embedded box 1. The first limiting part 31 is used to limit the universal water inlet / outlet connector 3 so that the universal water inlet / outlet connector 3 will not leave the pre-embedded box 1. The connecting part 32 is used to connect with a pipe (not shown) inside the wall. A second abutment surface 311 is formed on the first limiting part 31 to seal and contact the first abutment surface 24.

[0062] A through hole 121 is provided through the partition plate 12. One end of the valve core seat connecting joint 7 forms a third abutment surface 71 that is in sealing contact with the first abutment surface 24 corresponding to the water outlet hole 23 of any valve core seat 2. The other end of the valve core seat connecting joint 7 forms a fourth abutment surface 72 that is in sealing contact with the first abutment surface 24 corresponding to the water inlet hole 27 of another valve core seat 2. This allows the mixed water output from any valve core seat 2 to be transported to another valve core seat 2 for water distribution, thereby achieving the output of multiple mixed water channels. It should be noted that: the multi-outlet concealed faucet of Embodiment 2 of this utility model is an extension of the concealed faucet of Embodiment 1. That is, at least one valve core seat 2 is added to the concealed faucet of Embodiment 1, and at least one installation position of valve core seat 2 is added in the pre-embedded box 1. The valve core seat connecting joint 7 is used to connect two adjacent valve core seats 2, thereby achieving the output of multiple mixed water channels to better meet various water needs. In specific implementation of this utility model, the specific number of valve core seats 2 can be expanded according to actual usage needs, and the corresponding installation positions can be expanded within the pre-embedded box 1.

[0063] In practical use, the multi-outlet concealed faucet of this utility model can be pre-embedded in the wall with the pre-embedded box 1, and the connection part 32 of each water inlet and outlet universal connector 3 can be passed through the clearance hole 11 from the pre-embedded box 1 and pre-connected to the pipe in the wall. Before installing the valve core seat 2, the valve core seat connecting connector 7 needs to be passed through the connecting hole 121 from one side of the partition plate 12. When installing the valve core seat 2, the two valve core seats 2 are installed into the pre-embedded box 1 from the outside to the inside. During the installation of the valve core seat 2, each first abutting surface 24 on the valve core seat 2 will push the corresponding inlet and outlet universal connector 3 outward. Since the inlet and outlet universal connector 3 has a first limiting part 31 located inside the pre-embedded box 1, after the valve core seat 2 is installed in place, each first abutting surface 24 can abut and seal with the second abutting surface 311 of the corresponding inlet and outlet universal connector 3. At the same time, the two opposing first abutting surfaces 24 of the two valve core seats 2 will abut and seal with the third abutting surface 71 and the fourth abutting surface 72, respectively.

[0064] In the second embodiment of this utility model, each valve core seat 2 has four first abutment surfaces 24 formed on its sidewall. The included angle between two adjacent first abutment surfaces 24 is 90°, and each first abutment surface 24 is provided with a sealing groove 25. A sealing ring 4 is provided in the sealing groove 25, which can achieve a better sealing effect. In a specific implementation of this utility model, the pre-embedded box 1 is a square box, and each of the four sidewalls of the pre-embedded box 1 is provided with a clearance through hole 11 to facilitate the installation of a universal water inlet / outlet connector 3 on each of the four sidewalls of the pre-embedded box 1; the sealing ring 4 can be a rubber sealing ring. Meanwhile, since the hot water passage 21, cold water passage 22, outlet water passage 23, and inlet water passage 27 are all located on a first abutment surface 24, when any valve core seat 2 has only one outlet water passage 23, one of the first abutment surfaces 24 can be left without a water passage; and when any valve core seat 2 has two outlet water passages 23, both of the first abutment surfaces 24 can be provided with outlet water passages 23; similarly, for another valve core seat 2, in addition to the first abutment surface 24 with the inlet water passage 27, outlet water passages 23 can also be provided on one, two, or the remaining three first abutment surfaces 24 as needed.

[0065] In the second embodiment of this utility model, the second abutment surface 311, the third abutment surface 71, and the fourth abutment surface 72 are all inclined surfaces that gradually approach the valve core seat 2 from top to bottom, and the first abutment surface 24 is an inclined surface that matches the second abutment surface 311, the third abutment surface 71, or the fourth abutment surface 72. By adopting the above inclined surface structure design, it is not only convenient to assemble the valve core seat 2, but also ensures that the first abutment surface 24 of the valve core seat 2 can reliably abut against the second abutment surface 311, the third abutment surface 71, or the fourth abutment surface 72 after assembly, thereby ensuring sealing.

[0066] In the second embodiment of this utility model, a limiting block 312 is formed at the lower end of the second abutment surface 311, the third abutment surface 71 and the fourth abutment surface 72. The limiting block 312 is used to limit the assembly of the valve core seat 2.

[0067] In the second embodiment of this utility model, the valve core seat connecting joint 7 has a second limiting part 73 located on one side of the partition 12 and a connecting part 74 extending to the other side of the partition 12. When the two valve core seats 2 press against the valve core seat connecting joint 7 from both ends, the second limiting part 73 can also press against the partition 12 to ensure the stability of use.

[0068] In the second embodiment of this utility model, each valve core seat 2 is integrally formed with several connecting pieces 26. Each connecting piece 26 is locked to the pre-embedded housing 1 by a locking member 5, wherein the locking member 5 can be a bolt or a screw. By forming multiple connecting pieces 26 on each valve core seat 2 and using locking members 5 to lock the connecting pieces 26 to the pre-embedded housing 1, the stability of the valve core seat 2 after assembly can be ensured, so that the valve core seat 2 will not loosen during use.

[0069] In a specific implementation of this utility model, the concealed faucet also includes a mixing valve core 6 installed on any valve core seat 2 and a water distribution valve core 8 installed on the other valve core seat 2. Both the mixing valve core 6 and the water distribution valve core 8 are common components of faucets, and their specific structures and working principles are well known to those skilled in the art; therefore, they will not be described in detail here. During operation, the hot water supplied by the hot water passage 21 of any valve core seat 2 and the cold water supplied by the cold water passage 22 are mixed inside the mixing valve core 6. The mixed water is then transported to the water distribution valve core 8 of the other valve core seat 2 through the outlet passage 23 of that valve core seat 2 and the inlet passage 27 of the other valve core seat 2. The water distribution valve core 8 controls the outlet passage 23 of the other valve core seat 2 to output the mixed water. Simultaneously, when any valve core seat 2 has two outlet passages 23, the mixed water can also be output through the outlet passage 23 that is not connected to the other valve core seat 2.

[0070] While specific embodiments of the present invention have been described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and not intended to limit the scope of the present invention. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A concealed faucet that can be flexibly manufactured, comprising a pre-embedded housing and a valve core seat that can be detachably installed within the pre-embedded housing; characterized in that: It also includes universal inlet and outlet water connectors; The side wall of the valve core seat is provided with a hot water passage hole, a cold water passage hole and at least one outlet water passage hole. The side wall of the valve core seat forms a plurality of first abutment surfaces. The hot water passage hole, the cold water passage hole and each outlet water passage hole are located on a corresponding first abutment surface. The side wall of the pre-embedded box is provided with a clearance through hole corresponding to each first abutment surface. Each clearance through hole is equipped with a universal inlet and outlet water connector. The universal inlet and outlet water connector has a first limiting part located inside the pre-embedded box and a connecting part extending outside the pre-embedded box. A second abutment surface is formed on the first limiting part to seal and contact the first abutment surface.

2. The concealed faucet that can be flexibly manufactured as described in claim 1, characterized in that: The sidewall of the valve core seat has four first abutment surfaces, with an included angle of 90° between two adjacent first abutment surfaces, and a sealing groove is provided around each first abutment surface, with a sealing ring provided in the sealing groove.

3. The concealed faucet that can be flexibly manufactured as described in claim 1, characterized in that: The second abutting surface is an inclined surface that gradually approaches the valve core seat from top to bottom, and the first abutting surface is an inclined surface that matches the second abutting surface.

4. A concealed faucet that can be flexibly manufactured as described in claim 1, characterized in that: A limiting block is formed at the lower end of the second abutment surface.

5. A concealed faucet that can be flexibly manufactured as described in claim 1, characterized in that: The valve core seat is integrally formed with several connecting pieces, and each connecting piece is locked to the pre-embedded box body by a locking component.

6. A multi-outlet concealed faucet that can be flexibly manufactured, characterized in that: It includes a pre-embedded box, at least two valve core seats that can be detachably installed in the pre-embedded box, a universal inlet and outlet connector, and a valve core seat connecting connector; a partition is provided between the two valve core seats in the pre-embedded box; The side wall of any one of the valve core seats is provided with a hot water passage hole, a cold water passage hole and at least one outlet water passage hole, and the side wall of the other valve core seat is provided with an inlet water passage hole and at least one outlet water passage hole. The side wall of each valve core seat is formed with a plurality of first abutting surfaces, and the hot water passage hole, cold water passage hole, outlet water passage hole and inlet water passage hole are all located on a corresponding first abutting surface. The side wall of the pre-embedded box is provided with a clearance through hole corresponding to each first abutment surface. Each clearance through hole is equipped with a universal water inlet and outlet connector. The universal water inlet and outlet connector has a first limiting part located inside the pre-embedded box and a connecting part extending outside the pre-embedded box. A second abutment surface is formed on the first limiting part that is in sealing contact with the first abutment surface. A through hole is provided through the partition plate, and one end of the valve core seat connecting joint forms a third abutment surface that is in sealing contact with the first abutment surface corresponding to the water outlet hole of any valve core seat. One end of the valve core seat connecting joint forms a fourth abutment surface that is in sealing contact with the first abutment surface corresponding to the water inlet hole of another valve core seat.

7. A multi-outlet concealed faucet that can be flexibly manufactured as described in claim 6, characterized in that: Each valve core seat has four first abutment surfaces on its sidewall, with an included angle of 90° between two adjacent first abutment surfaces, and a sealing groove is provided around each first abutment surface, with a sealing ring provided in the sealing groove.

8. A multi-outlet concealed faucet that can be flexibly manufactured as described in claim 6, characterized in that: The second, third, and fourth abutting surfaces are all inclined surfaces that gradually approach the valve core seat from top to bottom, and the first abutting surface is an inclined surface that matches the second, third, or fourth abutting surface.

9. A multi-outlet concealed faucet that can be flexibly manufactured as described in claim 6, characterized in that: The lower ends of the second, third, and fourth abutment surfaces form finite blocks.

10. A flexible, concealed-installation multi-outlet faucet as described in claim 6, characterized in that: The valve core seat connecting joint has a second limiting part located on one side of the partition and a connecting part extending to the other side of the partition.

Images