Three-section type fast-assembly inner core

Abstract

The utility model discloses a three-section type fast-assembly inner core which is provided with an inner seat body, an outer seat body, a cold and hot water pipe, a containing seat and a limiting seat, the outer seat body and a valve core seat are located at the two ends of the cold and hot water pipe respectively, and the valve core seat is provided with an installation cavity. The inner cavity wall of the inner seat body is provided with an internal thread structure, the top surface of the inner seat body is provided with a mounting structure, the outer seat body is screwed outside the inner seat body and is positioned outside the faucet shell, the top surface of the outer seat body is provided with an overlying part, and the upper end part of the inner seat body is positioned outside the outer seat body; one part of the installation cavity falls into the containing base, the other part of the installation cavity falls into the limiting base, the cold and hot water pipe, the inner base body and the containing base integrally form an inner shell, the lower end of the limiting base is installed in the containing base in a screwed mode, and the screwing direction of the limiting base and the containing base is opposite to the screwing direction of the outer base body and the inner base body. The upper end of the limiting seat is laminated and limited on the top surface of the accommodating seat, and an extending hole is formed in the limiting seat; compared with the prior art, the three-section structure is simple in structure and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of faucets, in particular to a three-section quick-install inner core. Background Art

[0002] Traditional faucet valve bodies are mostly made of metal materials, but metal is prone to precipitate heavy metals when immersed in water, so existing faucet valve bodies are mostly made of plastic materials, such as a structurally improved faucet valve body with application number 2018210943458, which includes a plastic faucet valve body shell, a water outlet pipe shell integrally formed therewith is provided on the plastic faucet valve body shell, an inner core assembly is provided inside the plastic faucet valve body shell, a water outlet pipe integrally injection-molded and fixed therewith is provided inside the water outlet pipe shell, and the water outlet pipe has a water inlet and a water outlet; the inner core assembly is composed of a water inlet pipe base, a cold water pipe, a hot water pipe and a ceramic valve core seat, a ceramic valve core cavity for fixing the ceramic valve core is provided in the ceramic valve core seat, a cold water pipe inlet hole, a hot water pipe inlet hole, a water outlet hole and a positioning groove are provided in the ceramic valve core cavity, the water inlet pipe base is fixedly connected to the ceramic valve core cavity through the cold water pipe and the hot water pipe, and the cold water pipe and the hot water pipe are respectively inletted through the cold water pipe The hole and the water inlet hole of the hot water pipe are connected with the ceramic valve core cavity, the ceramic valve core seat is provided with a water outlet cavity connected with the water outlet hole, the water outlet cavity is connected with the water inlet of the water outlet pipe, and a sealing ring is provided between the ceramic valve core seat and the plastic faucet valve body shell; during assembly, the inner core component extends from the lower end of the valve body shell into the valve body shell from bottom to top, and then the valve core is installed from top to bottom, and a conversion thread head for installing the cold water hose and the hot water hose is screwed on the bottom of the valve body shell; during installation, prepare the hand-tightening nut and the faucet fixing joint, extend the cold water pipe and the hot water pipe into the hand-tightening nut, and then extend the cold water pipe and the hot water pipe from bottom to top into the hole position of the basin, and extend the cold water pipe and the hot water pipe into the faucet fixing joint together, and align the cold water pipe with the water inlet hole of the cold water pipe for connection, align the hot water pipe with the water inlet of the hot water pipe for connection, tighten the faucet fixing joint with the conversion thread head and vertically put it into the hole position of the basin, tighten the hand-tightening nut with the faucet fixing joint, and the installation is completed.

[0003] However, during the assembly process, when the inner core component is extended upward into the valve body shell from bottom to top, since the inner core component has a certain stroke from the bottom of the valve body shell to the top of the valve body shell, the outer wall of the sealing ring is tightly matched with the inner wall of the valve body shell, which makes it more difficult to push up the inner core component and the installation is slower. Furthermore, the inner core component of this structure is only suitable for valve cores with external threads, and the installation scope is small.

[0004] In view of this, the inventor of this case conducted an in-depth study on the problem, which resulted in this case. Utility Model Content

[0005] The utility model aims to provide a three-section quick-install inner core to solve the problems of the existing inner core being difficult and slow to install and having a small installation application range.

[0006] In order to achieve the purpose, the utility model adopts the following technical solution:

[0007] A three-section quick-install inner core, with an inner core body, the inner core body includes a water inlet pipe base, hot and cold water pipes and a valve core seat, the water inlet pipe base and the valve core seat are respectively located at the two end portions of the hot and cold water pipes, the valve core seat is provided with an installation chamber, the installation chamber is provided with a water inlet hole and a water outlet hole; taking the axial direction of the hot and cold water pipes as the up and down direction, the water inlet pipe base is located at the lower end portion of the hot and cold water pipes, the water inlet pipe base has an inner seat body and an outer seat body, the inner seat body is a hollow seat body with an open bottom surface, the inner cavity wall of the inner seat body is provided with an internal thread structure screwed in with a transfer thread head, the lower end portion of the hot and cold water pipes is integrally formed with the top surface of the inner seat body and is connected and matched, the top surface of the inner seat body has an installation structure that is aligned with the faucet housing lock fixed point installation, the outer seat body screw It is installed outside the inner seat body, and the outer seat body is outside the faucet shell body, the top surface of the outer seat body has an overlapping portion for the faucet shell body to be overlapped thereon, and the upper end of the inner seat body is outside the outer seat body; the above-mentioned valve core seat has a accommodating seat and a limiting seat, the accommodating seat is a hollow seat body with an open top surface, a part of the installation chamber falls into the accommodating seat, and the other part falls into the limiting seat, the upper end of the cold and hot water pipes is integrally formed with the accommodating seat and is connected, the accommodating seat is provided with the water inlet hole and the water outlet hole, the lower end of the above-mentioned limiting seat is screwed in the accommodating seat, and the screwing direction of the limiting seat and the accommodating seat is opposite to the screwing direction of the outer seat body and the inner seat body, the upper end of the limiting seat is overlapped and limited on the top surface of the accommodating seat, and an extension hole for the valve stem of the valve core to extend out is opened in the limiting seat.

[0008] The inner seat body comprises an upper mounting plate, a lower mounting block and a connecting ring, the upper mounting plate and the lower mounting block are both circular structures, the connecting ring is a closed ring structure, the lower mounting block and the connecting ring are both located below the upper mounting plate, and the lower mounting block is located inside the upper end of the connecting ring, the upper mounting plate and the lower mounting block are both integrally formed with and communicated with the lower ends of the hot and cold water pipes, an internal thread is provided on the inner side wall of the lower end of the connecting ring, and this internal thread is the internal thread structure, the outer seat body is a hollow structure penetrating from top to bottom, and the outer seat body is screwed with the outer side wall of the connecting ring.

[0009] A strip-shaped protrusion extending along the radial direction of the upper mounting piece is provided on the top surface of the upper mounting piece, and a fixed-point calibration hole is opened on the outer side wall of the strip-shaped protrusion, and the fixed-point calibration hole is the mounting structure.

[0010] The outer diameter of the upper mounting plate is larger than the outer diameter of the connecting ring, and a step surface is formed between the bottom surface of the upper mounting plate and the outer side wall of the connecting ring, the minimum inner diameter of the top surface of the outer seat body matches the outer diameter of the connecting ring, the maximum outer diameter of the top surface of the outer seat body is larger than the outer diameter of the upper mounting plate, and a stacking surface is formed between the top surface of the outer seat body and the outer side wall of the upper mounting plate, on which the bottom surface of the faucet shell is stacked, and this stacking surface is the stacking portion.

[0011] The outer seat body is a hollow frustum column which tapers from bottom to top.

[0012] The above-mentioned limit seat comprises a lower screw section, a limit plate and an upper mounting section which are arranged in sequence from bottom to top. The above-mentioned limit plate is superimposed on the top surface of the accommodating seat, and the above-mentioned limit plate is provided with a through hole that penetrates up and down, and the through hole is within the range of the lower screw section. This through hole is the described extension hole, and the lower screw section is a hollow cylindrical structure with open ends at both ends. The lower screw section is in the hollow cavity of the accommodating seat and is screwed with the accommodating seat, and a limiting structure is provided on the inner cavity wall of the accommodating seat to limit the downward movement of the lower screw section. The top surface of the limit plate is integrally formed with an upper column body extending upward and having a hollow structure. The upper column body and the limit plate surround a hollow space, and the through hole is within the range of this hollow space. The outer diameter of the upper column body is smaller than the outer diameter of the limit plate. The upper column body is the described upper mounting section, and the hollow chamber of the accommodating seat, the hollow chamber of the lower screw section, the through hole and the hollow chamber of the upper mounting section constitute the described mounting chamber.

[0013] The upper column is in the form of a conical column which gradually contracts from bottom to top.

[0014] The accommodating seat has an accommodating chamber with an open top surface, the accommodating chamber has a reduced diameter chamber and an expanded diameter chamber located above the reduced diameter chamber, the inner cavity wall of the reduced diameter chamber and the inner cavity wall of the expanded diameter chamber form a limiting surface, and this limiting surface constitutes the limiting structure, the lower screw section is screwed together with the inner cavity wall of the expanded diameter chamber, and the water inlet and outlet are arranged on the reduced diameter chamber.

[0015] The limiting plate is in the form of a hollow closed ring structure, the outer diameter of the limiting plate is larger than the outer diameter of the lower screw-on section, and the bottom surface of the limiting plate and the outer side wall of the lower screw-on section form a pressing surface that presses against the top surface of the upper mounting section, the inner diameter of the limiting plate is consistent with the inner diameter of the lower screw-on section, and the inner side wall of the limiting plate is convexly provided with a convex ring in a closed ring structure, the bottom surface of the convex ring is concavely provided with an arc-shaped groove, and the hollow chamber of the convex ring forms the through hole.

[0016] An outer wall of the connecting ring is provided with an external threading pattern, and an inner wall of the diameter-expanding chamber is provided with an internal threading pattern, and the threading directions of the external threading pattern and the internal threading pattern are opposite.

[0017] The utility model discloses a three-stage quick-install inner core. During assembly, four sealing rings are sleeved on the outer wall of the inner shell, and the inner shell is extended into the faucet housing from top to bottom, so that four layers of sealing are formed between the inner shell and the faucet housing, and the sealing effect is better. The inner shell is then positioned and installed with the faucet housing through the mounting structure. The positioning and installation of the inner shell and the faucet housing make the center of the inner shell and the center of the faucet housing on the same straight line again, and the inner shell will not rotate arbitrarily in the faucet housing. Then the valve core is placed in the accommodating seat, the outer seat body is aligned with the inner seat body, the limiting seat is aligned with the accommodating seat, the valve stem of the valve core extends out of the extension hole of the limiting seat, and the outer seat body and the limiting seat are rotated in opposite directions at the same time, the screw installation of the limiting seat and the accommodating seat and the screw installation of the outer seat body and the inner seat body are completed, that is, the installation of the inner core body and the faucet housing is completed. At this time, the faucet housing is clamped between the outer seat body and the limiting seat, and finally the adapter thread head is installed on the bottom of the inner seat body through the internal thread structure to complete the installation; the entire inner core body has The utility model has three sections, namely, an outer seat body, a limiting seat and an inner shell. After the inner shell is extended into the faucet housing from top to bottom, the outer seat body and the limiting seat are screwed in opposite directions relative to the inner shell at the same time, thereby improving the installation efficiency of the inner core body and the faucet housing. Compared with the prior art, the inner core body is a three-section structure, which is simple in structure and convenient to install. Moreover, the entire inner shell is extended into the faucet housing from top to bottom, the entire inner seat body and the hot and cold water pipes enter the faucet housing first, and the valve core seat enters the faucet housing last, thereby shortening the stroke of the valve core seat entering the faucet housing, and preventing the sealing ring on the valve core seat from rubbing against the faucet housing for a long time, thereby making the installation of the entire inner shell smoother. At the same time, the valve core is placed in the installation chamber, and the lower end of the valve core is limited in the accommodating seat by the limiting seat, thereby being adaptable to various styles of valve cores and having a wide range of applications. Furthermore, the faucet housing can be configured as a hollow cylindrical structure with both ends open corresponding to the inner shell, thereby making the processing and forming of the faucet housing simpler and reducing the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the use state of the utility model.

[0020] Figure 3 It is a schematic diagram of the assembly structure of the utility model.

[0021] Figure 4 It is a structural schematic diagram of the faucet housing of the utility model.

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model. DETAILED DESCRIPTION

[0023] In order to further explain the technical solution of the present utility model, it is described in detail below with reference to the accompanying drawings.

[0024] A three-stage quick-install inner core, such as Figure 1-5 As shown, it has an inner core body, and a faucet shell 1 is arranged outside the inner core body. The faucet shell 1 is a hollow shell that penetrates from top to bottom. The inner core body includes an inlet pipe base, hot and cold water pipes 2 and a valve core seat. The inlet pipe base and the valve core seat are respectively located at the two end portions of the hot and cold water pipes 2. The valve core seat has an installation chamber, and the installation chamber is provided with a water inlet hole and a water outlet hole. The faucet shell 1 is provided with an outgoing water hole 100 for water to be discharged from the water outlet hole. The way that water flows through the hot and cold water pipes 2 and enters from the water inlet hole, and then flows out of the outgoing water hole through the water outlet hole is a well-known technology for those skilled in the art and will not be elaborated here.

[0025] The improvement of the utility model is that: the water inlet pipe base is located at the lower end of the hot and cold water pipe 2, and the water inlet pipe base has an inner seat body 3 and an outer seat body 4, the inner seat body 3 is a hollow seat body with an open bottom surface, and the inner cavity wall of the inner seat body 3 is provided with an internal thread structure screwed in with the adapter thread head, the lower end of the hot and cold water pipe 2 is integrally formed with the top surface of the inner seat body 3 and communicated with each other, the outer seat body 4 is screwed on the outside of the inner seat body 3, and the two end portions of the hot and cold water pipe 2 are respectively integrated with the inner seat body 3 and the accommodating seat 5 to form an inner shell embedded in the faucet shell 1 Specifically, the inner seat body 3 has an upper mounting piece 31, a lower mounting block 32 and a connecting ring 33. The upper mounting piece 31 and the lower mounting block 32 are both circular structures, and the connecting ring 33 is a closed ring structure. The lower mounting block 32 and the connecting ring 33 are both located below the upper mounting piece 31, and the lower mounting block 32 is located in the upper end of the connecting ring 33. The upper mounting piece 31 and the lower mounting block 32 are both integrally formed with the lower end of the cold and hot water pipe 2 and are connected, that is, the upper mounting piece 31 and the lower mounting block 32 are both provided with a vertical direction penetrating and connecting with the cold and hot water pipes. 2 is connected with the installation connecting hole 200, and the inner side wall of the lower end of the cold and hot water pipe is provided with a threaded pattern for the cold and hot water hose to be screwed on the cold and hot water pipe at a position above the installation connecting hole 200. The inner side wall of the lower end of the connecting ring 33 is provided with an internal thread for the transfer thread head to be screwed. This internal thread is the internal thread structure described above. The structure of the transfer thread head is a well-known technology for those skilled in the art and will not be described in detail here. The outer side wall of the connecting ring 33 is provided with a first external threaded pattern. The outer seat body 4 is a hollow structure that runs through from top to bottom. Preferably, The outer seat body 4 is a hollow conical column that tapers from bottom to top, and the inner side wall of the outer seat body 4 is provided with a first internal thread pattern that is screwed with the internal thread of the connecting ring 33; when in use, the inner shell extends into the faucet housing 1 from top to bottom, the inner seat body 3 is within the range of the faucet housing 1, the outer seat body 4 is screwed on the outside of the connecting ring 33 through the first external thread pattern and the first internal thread pattern, and the adapter thread head is screwed on the connecting ring 33 through the internal thread structure; the hollow conical column structure of the outer seat body 4 makes it convenient for the hand to rotate the outer seat body 4 without slipping.

[0026] The outer seat body 4 is outside the faucet housing 1, and the top surface of the outer seat body 4 has a stacking portion for the faucet housing to be stacked thereon, and the upper end portion of the inner seat body 3 is outside the outer seat body 4; specifically, the outer diameter of the upper mounting plate 31 is larger than the outer diameter of the connecting ring 33, and a step surface 300 is formed between the bottom surface of the upper mounting plate 31 and the outer side wall of the connecting ring 33, the minimum inner diameter of the top surface of the outer seat body 4 matches the outer diameter of the connecting ring 33, the maximum outer diameter of the top surface of the outer seat body 4 is larger than the outer diameter of the upper mounting plate 31, and a stacking surface 400 is formed between the top surface of the outer seat body 4 and the outer side wall of the upper mounting plate 31, on which the bottom surface of the faucet housing 1 is stacked, and this stacking surface 400 is the stacking portion; when used, the outer seat body 4 is aligned with the connecting ring 33, and the first outer threading pattern of the outer seat body 4 is screwed upward along the inner thread of the connecting ring 33 until the stacking surface 400 contacts the bottom surface of the faucet housing 1, and the screwing of the outer seat body 4 is completed.

[0027] The top surface of the inner seat body 3 has an installation structure for locking and calibrating the fixed point with the faucet housing 1; specifically, a strip protrusion 311 extending along the radial direction of the upper mounting plate 31 is provided on the top surface of the upper mounting plate 31, and a fixed point calibration hole 500 is opened on the outer wall of the strip protrusion 311. This fixed point calibration hole 500 is the installation structure, and a positioning hole 600 corresponding to the positioning calibration hole is provided on the faucet housing 1; when used, the fixed point calibration hole 500 and the positioning hole 600 are aligned, and then the positioning bolts are screwed into the fixed point calibration hole 500 and the positioning hole 600, and the inner core body is located in the faucet housing 1 in a predetermined direction through the positioning cooperation of the positioning hole 600 and the fixed point calibration hole 500, so as to facilitate the installation of other components.

[0028] The valve core seat includes a receiving seat 5 and a limiting seat 6. The receiving seat 5 is a hollow seat body with an open top surface. A part of the installation chamber falls into the receiving seat 5 and the other part falls into the limiting seat 6. The upper end of the hot and cold water pipe 2 is integrally formed with the receiving seat 5 and is connected. The receiving seat 5 is provided with the above-mentioned water inlet hole and water outlet hole. The lower end of the above-mentioned limiting seat 6 is screwed into the receiving seat 5, and the outer side wall of the receiving seat is sealed with the inner side wall of the faucet housing. Specifically, the above-mentioned limiting seat 6 includes a lower screw-in section 61, a limiting plate 62 and an upper installation section 63 which are arranged in sequence from bottom to top. The above-mentioned limiting plate 62 is superimposed on the top surface of the receiving seat 5, and the above-mentioned limiting plate 62 is provided with an upper and lower through hole. The through hole is within the range of the lower screw section 61. The lower screw section 61 is a hollow cylindrical structure with open ends. The lower screw section 61 is in the hollow chamber of the accommodating seat 5 and is screwed together with the accommodating seat 5. A limiting structure for limiting the downward movement of the lower screw section 61 is provided on the inner cavity wall of the accommodating seat 5. An upper cylinder extending upward and having a hollow structure is integrally formed on the top surface of the limiting piece 62. The upper cylinder is a conical cylinder that gradually shrinks from bottom to top. The upper cylinder and the limiting piece 62 form a hollow space. The through hole is within the range of this hollow space. The outer diameter of the upper cylinder is smaller than the outer diameter of the limiting piece 62. The upper cylinder is the upper mounting section 63. The hollow chamber of the accommodating seat 5 and the lower screw section 61 are connected to each other by screwing. The hollow chamber of the section 61, the through hole and the hollow chamber of the upper mounting section 63 constitute the mounting chamber, and a sealing ring that is sealed with the faucet housing 1 is provided on the outer wall of the accommodating seat 5, that is, two upper sealing grooves arranged along the upper and lower intervals are provided on the outer wall of the accommodating seat 5, and a sealing ring is sealed in the upper sealing groove. A lower seat body 51 is provided below the accommodating seat 5, and the upper end of the cold and hot water pipes extends upward from the lower seat body 51 to communicate with the accommodating seat. The cold and hot water pipes are located between the accommodating seat and the lower seat body 51. A water outlet through hole connected to the above-mentioned water outlet hole is opened, and the water outlet through hole is connected to the outgoing water hole, and the outer wall of the lower seat body 51 is provided with two upper and lower intervals. A lower sealing groove is provided at intervals, and a sealing ring is provided in the lower sealing groove for sealing. The accommodating seat 5 has an accommodating chamber with an open top surface, and the accommodating chamber has a reduced diameter chamber and an expanded diameter chamber located above the reduced diameter chamber. The inner cavity wall of the reduced diameter chamber and the inner cavity wall of the expanded diameter chamber form a limiting surface 700, and this limiting surface 700 constitutes the limiting structure. The lower screw section 61 is screwed together with the inner cavity wall of the expanded diameter chamber, that is, the outer side wall of the lower screw section 61 is provided with a second outer screw thread, and the inner cavity wall of the expanded diameter chamber is provided with a second inner screw thread. The water inlet and the water outlet are provided on the inner cavity bottom of the reduced diameter chamber, and the inner cavity bottom of the reduced diameter chamber is provided with a positioning groove matching the positioning column of the valve core;When in use, after the inner shell extends into the faucet housing 1, the accommodating seat is sealed with the faucet housing 1 through the upper sealing groove, and the lower seat body 51 is sealed with the faucet housing through the lower sealing groove, and the upper sealing groove and the lower sealing groove are both provided with two sealing rings, so that four sealing matches are formed between the entire inner shell and the faucet housing, and the sealing effect is better. The valve core is vertically placed in the reduced diameter chamber, and the valve core is positioned and installed in the reduced diameter chamber through the cooperation of the positioning column and the positioning groove, and then the lower screwing section 61 is aligned with the expanded diameter chamber and screwed downward. When the bottom surface of the lower screwing section 61 contacts the limiting surface 700, the screw connection between the limiting seat 6 and the accommodating seat 5 is completed. At this time, the valve stem of the valve core extends upward out of the through hole; the valve stem is connected to the faucet handle, and the design of the conical column structure facilitates the insertion of the faucet handle. ;

[0029] The upper end of the limit seat 6 is overlapped and limited on the top surface of the accommodating seat 5, and an extension hole 800 is provided in the limit seat 6 for the valve stem of the valve core to extend outward; specifically, the limit plate 62 is a hollow closed ring structure, the outer diameter of the limit plate 62 is larger than the outer diameter of the lower screw-on section 61, and the bottom surface of the limit plate 62 and the outer side wall of the lower screw-on section 61 form a pressing surface that presses on the top surface of the upper mounting section 63, the inner diameter of the limit plate 62 is consistent with the inner diameter of the lower screw-on section 61, and the inner side wall of the limit plate 62 is convexly provided with a convex ring 621 in a closed ring structure, and the bottom surface of the convex ring 621 is concavely provided with an arc groove 900, and the convex ring 621 is concavely provided with an arc groove 900. The hollow chamber of the ring 621 forms the through hole, which is the extension hole 800. When in use, a sealing gasket is embedded in the arc groove 900, and the convex ring 621 limits the valve core, and the valve core is also sealed with the limiting seat 6 through the sealing gasket. At the same time, after the lower threaded section 61 of the limiting seat 6 is threaded with the reduced diameter chamber of the accommodating seat 5, the outer bottom surface of the limiting plate 62 is superimposed on the top surface of the faucet housing 1, and the faucet housing 1 is clamped between the limiting plate 62 and the outer seat body 4, so that as long as the faucet housing 1 is a hollow structure, the inner core body can be installed, which makes the processing and forming of the faucet housing 1 simpler.

[0030] The screwing direction of the limit seat 6 and the accommodating seat 5 is opposite to the screwing direction of the outer seat body 4 and the inner seat body 3; specifically, the screwing direction of the first outer threading line of the connecting ring 33 and the second inner threading line of the diameter expansion chamber is opposite, that is, the extension direction of the first outer threading line is counterclockwise, and the extension direction of the second inner threading line is clockwise, and the extension direction of the first outer threading line is clockwise, and the extension direction of the second inner threading line is counterclockwise; when used, the outer seat body 4 is screwed with the first outer threading line of the connecting ring 33, and the limit seat 6 is screwed with the second inner threading line of the diameter expansion chamber, and the screwing directions of the first outer threading line and the first inner threading line are opposite, so that the outer seat body 4 and the limit seat 6 can be screwed at the same time, thereby improving the installation efficiency.

[0031] In the present invention, it is preferred that the outer diameter of the receiving seat 5 is the same as the outer diameter of the inner seat body 3, and the receiving seat 5 and the inner seat body 3 match the inner diameter of the faucet housing 1; when used, the outer diameter of the receiving seat 5 is the same as the outer diameter of the inner seat body 3, so that the entire inner shell forms a cylindrical structure, so that the faucet housing 1 can be set as a hollow cylindrical structure with both ends open, making the processing and forming of the faucet housing 1 simpler.

[0032] The utility model discloses a three-stage quick-install inner core. When assembling, a sealing ring is put on the outer side wall of the accommodating seat and the lower seat body 51, and the inner shell is extended from top to bottom into the faucet housing 1, so that a quadruple seal is formed between the faucet housing and the inner shell, and the sealing effect is better. Then, the fixed point calibration hole 500 is aligned with the positioning hole 600 of the faucet housing 1, and the positioning bolt is passed through the positioning calibration hole 500 and the positioning hole 600 and screwed. The inner shell and the faucet housing 1 are positioned and installed so that the center of the inner shell and the center of the faucet housing 1 are on the same straight line again, and the inner shell will not rotate arbitrarily in the circumferential direction in the faucet housing 1. Then, the valve core is placed in the reduced diameter chamber of the accommodating seat 5, and the outer seat body 4 is aligned with the connecting ring 33 of the inner seat body 3 and the lower screw of the limiting seat 6. The segment is aligned with the enlarged diameter chamber of the accommodating seat 5, the valve stem of the valve core extends out of the extension hole 800 of the limit seat 6, and the outer seat body 4 and the limit seat 6 are rotated in opposite directions at the same time, until the outer seat body 4 contacts the overlapping surface 400 and the lower threaded segment 61 of the limit seat 6 contacts the limit surface 700 of the accommodating seat 5, that is, the installation of the inner core body and the faucet shell 1 is completed. At this time, the faucet shell 1 is clamped between the outer seat body 4 and the limit seat 6, and finally the adapter thread head is installed on the bottom of the inner seat body through the internal thread structure to complete the installation; the entire inner core body has three sections: the outer seat body, the limit seat and the inner shell. After the inner shell is extended into the faucet shell from top to bottom, the outer seat body and the limit seat are simultaneously reversely screwed and installed relative to the inner shell, which improves the installation efficiency of the inner core body and the faucet shell. Compared with the prior art, the inner core body is a three-section structure with a simple structure and easy installation. Moreover, the entire inner shell extends into the faucet housing 1 from top to bottom, and the entire inner seat body 3 and the hot and cold water pipes 2 enter the faucet housing 1 first, so that the valve core seat enters the faucet housing 1 with a shorter stroke, and the sealing ring on the valve core seat will not rub against the faucet housing 1 for a long time, so that the installation of the entire inner shell is smoother; at the same time, the valve core is placed in the installation chamber, and the lower end of the valve core is limited in the accommodating seat 5 by the limiting seat 6, which can adapt to various styles of valve cores and has a wide range of applications; furthermore, the faucet housing 1 can be set to a hollow cylindrical structure with both ends open corresponding to the inner shell, so that the processing and forming of the faucet housing 1 is simpler and the processing cost is reduced.

[0033] Preferably, the bottom surface of the outer base body 4 is convexly provided with a pressing convex ring 41 which presses against the bottom surface of the connecting ring 33; when in use, when the outer base body 4 is screwed upward, it stops moving when it is aligned under the limit of the pressing convex ring 41, which can prevent the outer base body 4 from moving upward continuously and prevent damage to the first external thread on the outer base body 4.

[0034] The product form of the utility model is not limited to the illustrations and embodiments of this case. Any appropriate changes or modifications made by anyone with similar ideas should be deemed to be within the patent scope of the utility model.

Claims

1. A three-stage quick-install inner core, comprising an inner core body, the inner core body comprising a water inlet pipe base, hot and cold water pipes and a valve core seat sealed with a faucet housing, the water inlet pipe base and the valve core seat being respectively located at the two end portions of the hot and cold water pipes, the valve core seat being provided with an installation chamber, the installation chamber being provided with a water inlet hole and a water outlet hole; characterized in that: Taking the axial direction of the hot and cold water pipes as the up and down direction, the water inlet pipe base is located at the lower end of the hot and cold water pipes, the water inlet pipe base has an inner seat body and an outer seat body, the inner seat body is a hollow seat body with an open bottom surface, the inner cavity wall of the inner seat body is provided with an internal thread structure screwed into the inner cavity with the adapter thread head, the lower end of the hot and cold water pipes is integrally formed with the top surface of the inner seat body and is in communication with the top surface of the inner seat body, the top surface of the inner seat body has an installation structure that is fixedly positioned and installed with the faucet housing, the outer seat body is screwed onto the outside of the inner seat body, and the outer seat body is outside the faucet housing, the top surface of the outer seat body has an overlapping portion for the faucet housing to be overlapped thereon, and the upper end of the inner seat body is outside the outer seat body; the valve core seat has a receiving seat and a limiting seat, the receiving seat It is a hollow seat body with an open top surface, a part of the installation chamber falls into the accommodating seat, and the other part falls into the limiting seat, the upper end of the cold and hot water pipes is integrally formed with the accommodating seat and is connected, and the two end portions of the cold and hot water pipes are respectively integrated with the inner seat body and the accommodating seat to form an inner shell embedded in the faucet shell, the outer side wall of the accommodating seat is sealed with the inner side wall of the faucet shell, the accommodating seat is provided with the water inlet hole and the water outlet hole, the lower end of the above-mentioned limiting seat is screwed into the accommodating seat, and the screwing direction of the limiting seat and the accommodating seat is opposite to the screwing direction of the outer seat body and the inner seat body, the upper end of the limiting seat is overlapped and limited on the top surface of the accommodating seat, and an extension hole for the valve stem of the valve core to extend out is opened in the limiting seat.

2. The three-stage quick-install inner core according to claim 1, characterized in that: The inner seat body comprises an upper mounting plate, a lower mounting block and a connecting ring, the upper mounting plate and the lower mounting block are both circular structures, the connecting ring is a closed ring structure, the lower mounting block and the connecting ring are both located below the upper mounting plate, and the lower mounting block is located inside the upper end of the connecting ring, the upper mounting plate and the lower mounting block are both integrally formed with and communicated with the lower ends of the hot and cold water pipes, an internal thread is provided on the inner side wall of the lower end of the connecting ring, and this internal thread is the internal thread structure, the outer seat body is a hollow structure penetrating from top to bottom, and the outer seat body is screwed with the outer side wall of the connecting ring.

3. The three-stage quick-install inner core according to claim 2, characterized in that: A strip-shaped protrusion extending along the radial direction of the upper mounting piece is provided on the top surface of the upper mounting piece, and a fixed-point calibration hole is opened on the outer side wall of the strip-shaped protrusion, and the fixed-point calibration hole is the mounting structure.

4. The three-stage quick-install inner core according to claim 2, characterized in that: The outer diameter of the upper mounting plate is larger than the outer diameter of the connecting ring, and a step surface is formed between the bottom surface of the upper mounting plate and the outer side wall of the connecting ring, the minimum inner diameter of the top surface of the outer seat body matches the outer diameter of the connecting ring, the maximum outer diameter of the top surface of the outer seat body is larger than the outer diameter of the upper mounting plate, and a stacking surface is formed between the top surface of the outer seat body and the outer side wall of the upper mounting plate, on which the bottom surface of the faucet shell is stacked, and this stacking surface is the stacking portion.

5. The three-section quick-install inner core according to claim 2, characterized in that: The outer seat body is a hollow frustum column which tapers from bottom to top.

6. The three-section quick-install inner core according to claim 2, characterized in that: The above-mentioned limit seat comprises a lower screw section, a limit plate and an upper mounting section which are arranged in sequence from bottom to top. The above-mentioned limit plate is superimposed on the top surface of the accommodating seat, and the above-mentioned limit plate is provided with a through hole that penetrates up and down, and the through hole is within the range of the lower screw section. This through hole is the described extension hole, and the lower screw section is a hollow cylindrical structure with open ends at both ends. The lower screw section is in the hollow cavity of the accommodating seat and is screwed with the accommodating seat, and a limiting structure is provided on the inner cavity wall of the accommodating seat to limit the downward movement of the lower screw section. The top surface of the limit plate is integrally formed with an upper column body extending upward and having a hollow structure. The upper column body and the limit plate surround a hollow space, and the through hole is within the range of this hollow space. The outer diameter of the upper column body is smaller than the outer diameter of the limit plate. The upper column body is the described upper mounting section, and the hollow chamber of the accommodating seat, the hollow chamber of the lower screw section, the through hole and the hollow chamber of the upper mounting section constitute the described mounting chamber.

7. The three-section quick-install inner core according to claim 6, characterized in that: The upper column is in the form of a conical column which gradually contracts from bottom to top.

8. The three-section quick-install inner core according to claim 6, characterized in that: The accommodating seat has an accommodating chamber with an open top surface, the accommodating chamber has a reduced diameter chamber and an expanded diameter chamber located above the reduced diameter chamber, the inner cavity wall of the reduced diameter chamber and the inner cavity wall of the expanded diameter chamber form a limiting surface, and this limiting surface constitutes the limiting structure, the lower screw section is screwed together with the inner cavity wall of the expanded diameter chamber, and the water inlet and outlet are arranged on the reduced diameter chamber.

9. The three-section quick-install inner core according to claim 6, characterized in that: The limiting plate is in the form of a hollow closed ring structure, the outer diameter of the limiting plate is larger than the outer diameter of the lower screw-on section, and the bottom surface of the limiting plate and the outer side wall of the lower screw-on section form a pressing surface that presses against the top surface of the upper mounting section, the inner diameter of the limiting plate is consistent with the inner diameter of the lower screw-on section, and the inner side wall of the limiting plate is convexly provided with a convex ring in a closed ring structure, the bottom surface of the convex ring is concavely provided with an arc-shaped groove, and the hollow chamber of the convex ring forms the through hole.

10. The three-section quick-install inner core according to claim 8, characterized in that: An outer wall of the connecting ring is provided with an external threading pattern, and an inner wall of the diameter-expanding chamber is provided with an internal threading pattern, and the threading directions of the external threading pattern and the internal threading pattern are opposite.

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