Faucet water inlet pipe assembly

By using plastic water pipes and connector assemblies to replace traditional materials, the high cost, lead release, and sealing issues of faucet inlet pipe assemblies are solved, achieving a low-cost, lead-free, and well-sealed connection.

CN223460043UActive Publication Date: 2025-10-21GUANGDONG MINGJIE SANITARY WARE TECH CO LTD
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Patent Information

Application Number
CN202421820478.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2025-10-21
Estimated Expiration
2034-07-30

AI Technical Summary

Technical Problem

Existing faucet water inlet pipe components have high material costs, contain harmful lead and have poor sealing performance.

Method used

Plastic water pipes and plastic fittings are used instead of copper water pipes and brass fittings, and sealing rings and metal nuts are installed at the fittings to ensure sealing and stability.

Benefits of technology

It reduces material costs, avoids lead release, and improves sealing and connection stability.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223460043U_ABST
    Figure CN223460043U_ABST
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Abstract

The utility model discloses a faucet water inlet pipe assembly, and relates to the technical field of faucets. The plastic water pipe joint comprises a plastic water pipe, a first plastic joint, a first sealing ring, a second plastic joint, a second sealing ring and a metal nut, a first water inlet channel is arranged in the first plastic connector, one end of the plastic water pipe is inserted into one end of the first water inlet channel and fixedly connected with the inner wall of the first water inlet channel, and the first plastic connector is sleeved with the first sealing ring. A second water inlet channel is arranged in the second plastic connector, the other end of the plastic water pipe is inserted into one end of the second water inlet channel and fixedly connected with the inner wall of the second water inlet channel, and one end of the metal nut is arranged outside the second plastic connector in a sleeved mode. The second plastic connector is sleeved with the second sealing ring which is in interference fit with the inner wall of the metal nut, and external threads are arranged outside the metal nut. The utility model has the advantages of lower integral material cost, no lead and harmlessness, and good sealing performance.
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Description

TECHNICAL FIELD

[0001] The utility model relates to faucet technical field especially relates to a faucet water inlet pipe subassembly. BACKGROUND

[0002] The existing faucet water inlet pipe subassembly passes through including TP1 red copper water pipe and the C36000 brass joint welded in the both ends of red copper water pipe, one brass joint is used for inserting to the water inlet of faucet, and the other brass joint is used for connecting indoor water pipe, and the technical problem of this kind of faucet water inlet pipe subassembly mainly exists: first, the overall material cost is higher, second, the red copper water pipe and brass joint contain lead element, when the water flow passes through the red copper water pipe and brass joint, the red copper water pipe and brass joint can release trace lead to water, and lead is harmful to human body, third, the connection sealing performance of brass joint and faucet is difficult to guarantee, and often needs to wind multiple sealing adhesive tape outside brass joint to achieve sealing. SUMMARY

[0003] The utility model solves the technical problem according to the above-mentioned prior art's insufficient, provides a kind of faucet water inlet pipe subassembly with lower overall material cost, no lead harmless, good sealing.

[0004] To solve the above technical problem, the technical scheme of the utility model is: a faucet water inlet pipe subassembly, including plastic water pipe, first plastic joint, first sealing ring, second plastic joint, second sealing ring and metal nut;First water inlet channel is equipped in the first plastic joint, one end of the plastic water pipe is inserted into one end of the first water inlet channel and is fixedly connected with the inner wall of the first water inlet channel, and the first sealing ring is sleeved outside the first plastic joint;Second water inlet channel is equipped in the second plastic joint, the other end of the plastic water pipe is inserted into one end of the second water inlet channel and is fixedly connected with the inner wall of the second water inlet channel, one end of the metal nut is sleeved outside the second plastic joint, the second sealing ring is sleeved outside the second plastic joint and is interference fit with the inner wall of the metal nut, and external thread is equipped outside the metal nut.

[0005] Preferably, the first water inlet channel of the first plastic joint is provided with a first annular connecting port on the inner wall of one end, and the one end of the plastic water pipe is inserted into the first annular connecting port and welded with the inner wall of the first annular connecting port.

[0006] Preferably, the outer wall of the end of the first plastic joint away from the first annular connecting port is provided with two first annular grooves in parallel, and the number of the first sealing rings is two, and the two first sealing rings are sleeved in the corresponding first annular grooves.

[0007] Preferably, an inner wall of one end of the second water inlet channel of the second plastic joint is provided with a second annular connecting port, and the other end of the plastic water pipe is inserted into the second annular connecting port and welded with the inner wall of the second annular connecting port.

[0008] Preferably, an outer wall of the end of the second plastic joint away from the second annular connecting port is provided with a plastic joint connecting portion protruding outward, two second annular grooves are arranged outside the plastic joint connecting portion in parallel, the number of the second sealing rings is two, the two second sealing rings are respectively sleeved in the corresponding second annular grooves, and one end of the metal nut is sleeved outside the plastic joint connecting portion.

[0009] Preferably, one end of the plastic joint connecting portion away from the second annular connecting port is provided with a connecting portion snap ring protruding outward, one end of the metal nut is provided with a nut snap ring protruding inward, a middle part of the metal nut is provided with an annular snap groove recessed outward, the nut snap ring is arranged on one side of the connecting portion snap ring, and the connecting portion snap ring is arranged in the annular snap groove.

[0010] Preferably, an outer wall of one end of the metal nut is provided with a nut head protruding outward, the external thread is arranged on an outer wall of the other end of the metal nut, and a nut connecting port is arranged in the other end of the metal nut.

[0011] Preferably, an inner wall of a port part of the nut connecting port is provided with a first guide inclined surface, and an outer side of the connecting portion snap ring is provided with a second guide inclined surface matched with the first guide inclined surface.

[0012] Preferably, the plastic water pipe is a PEX high-density polyethylene water pipe, the first plastic joint and the second plastic joint are high-density polyethylene joints respectively, and the metal nut is a brass nut.

[0013] The utility model discloses an advantageous effect is: (1) the utility model adopts the cost of plastic water pipe, first plastic joint and second plastic joint is lower, obviously lower than the red copper water pipe and brass joint in prior art, at the same time, the utility model is equipped with metal nut outside second plastic joint, can guarantee the stability of faucet water inlet pipe assembly and indoor water pipe connection; (2) the utility model adopts plastic water pipe, first plastic joint and second plastic joint do not contain lead element, when water flow passes through second plastic joint, plastic water pipe and first plastic joint in turn, will not release lead to water, can avoid the harm of lead to human body, and metal nut is equipped with outside second plastic joint, and does not directly contact water, therefore, metal nut also will not release lead to water, can avoid the harm of lead to human body; (3) the utility model is equipped with first sealing ring between first plastic joint, therefore, when first plastic joint is inserted into the water inlet of faucet, can guarantee that first plastic joint has good sealing between faucet, the utility model is equipped with second sealing ring outside second plastic joint, and second sealing ring and the inner wall of metal nut interference fit, therefore, can guarantee that second plastic joint has good sealing between metal nut; (4) the utility model is equipped with external thread outside metal nut, is convenient for connecting with indoor water pipe. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is one of the overall structure diagram of the utility model.

[0015] Figure 2 It is the second overall structure diagram of the utility model.

[0016] Figure 3 It is the dispersion structure diagram of the utility model.

[0017] Figure 4 It is the sectional structure diagram of the utility model.

[0018] Figure 5 It is the assembly process sectional view of the utility model. SPECIFIC EMBODIMENTS

[0019] The structure principle and working principle of the utility model are further explained in detail in combination with the drawings.

[0020] As Figures 1-5The utility model discloses a faucet water inlet pipe assembly, characterized in that: including plastic water pipe 1, first plastic joint 2, first sealing ring 3, second plastic joint 4, second sealing ring 5 and metal nut 6, first water inlet channel 11 is equipped in first plastic joint 2, and one end of plastic water pipe 1 is inserted into one end of first water inlet channel 11 and is fixedly connected with the inner wall of first water inlet channel 11, and first sealing ring 3 is sleeved outside first plastic joint 2, second water inlet channel 41 is equipped in second plastic joint 4, and the other end of plastic water pipe 1 is inserted into one end of second water inlet channel 41 and is fixedly connected with the inner wall of second water inlet channel 41, one end of metal nut 6 is sleeved outside second plastic joint 4, second sealing ring 5 is sleeved outside second plastic joint 4 and is in interference fit with the inner wall of metal nut 6, and external thread 61 is equipped outside metal nut 6. The utility model discloses plastic water pipe 1, first plastic joint 2 and second plastic joint 4 are lower in cost, and are obviously lower than the existing technology in red copper water pipe and brass joint, at the same time, the utility model discloses metal nut 6 outside second plastic joint 4, can guarantee the stability of faucet water inlet pipe assembly and indoor water pipe connection, the utility model discloses plastic water pipe 1, first plastic joint 2 and second plastic joint 4 do not contain lead element, when water flow passes through second plastic joint 4, plastic water pipe 1 and first plastic joint 2 in proper order, will not release lead to water, can avoid the harm of lead to human body, and metal nut 6 is sleeved outside second plastic joint 4, and does not directly contact water, therefore, metal nut 6 also will not release lead to water, can avoid the harm of lead to human body, the utility model discloses first sealing ring 3 between first plastic joint 2, therefore, when first plastic joint 2 is inserted into the water inlet of faucet (not shown in the figure), can guarantee that first plastic joint 2 has good sealing between faucet, the utility model discloses second sealing ring 5 outside second plastic joint 4, and second sealing ring 5 is in interference fit with the inner wall of metal nut 6, therefore, can guarantee that second plastic joint 4 has good sealing between metal nut 6, the utility model discloses external thread 61 outside metal nut 6, is convenient for connecting with indoor water pipe (not shown in the figure).

[0021] As Figure 4 The first end of the first water inlet channel 11 of the first plastic joint 2 is provided with a first annular connecting port 12, and the one end of the plastic water pipe 1 is inserted into the first annular connecting port 12 and is welded with the inner wall of the first annular connecting port 12, so as to ensure the stability of the connection between the plastic water pipe 1 and the first plastic joint 2. Figures 1-4As shown in the figure, the outer wall of the first plastic joint 2 away from the first annular connecting port 12 is provided with two first annular grooves 13, and the number of the first sealing ring 3 is two, and the two first sealing rings 3 are respectively sleeved in the corresponding first annular grooves 13, so that the first sealing ring 3 can be stably positioned, and the sealing performance between the first plastic joint 2 and the faucet inlet can be greatly improved by arranging two first sealing rings 3.

[0022] As shown in the figure, Figure 3 and Figure 4 As shown in the figure, the inner wall of one end of the second water inlet channel 41 of the second plastic joint 4 is provided with a second annular connecting port 42, and the other end of the plastic water pipe 1 is inserted into the second annular connecting port 42 and welded with the inner wall of the second annular connecting port 42, so that the connection stability of the plastic water pipe 1 and the second plastic joint 4 can be ensured. Figures 1-4 As shown in the figure, the outer wall of the other end of the second plastic joint 4 away from the second annular connecting port 42 is provided with a plastic joint connecting part 43 protruding outward, and the outer wall of the plastic joint connecting part 43 is provided with two second annular grooves 44, and the number of the second sealing ring 5 is two, and the two second sealing rings 5 are respectively sleeved in the corresponding second annular grooves 44, and the outer wall of one end of the metal nut 6 is sleeved outside the plastic joint connecting part 43. By arranging the plastic joint connecting part 43, the metal nut 6 and the second plastic joint 4 can be stably connected together, and the sealing performance between the second plastic joint 4 and the metal nut 6 can be greatly improved by arranging two second sealing rings 5.

[0023] As shown in the figure, Figure 3 and Figure 4 As shown in the figure, the outer wall of the other end of the second plastic joint 4 away from the second annular connecting port 42 is provided with a plastic joint connecting part 43 protruding outward, and the outer wall of the plastic joint connecting part 43 is provided with two second annular grooves 44, and the number of the second sealing ring 5 is two, and the two second sealing rings 5 are respectively sleeved in the corresponding second annular grooves 44, and the outer wall of one end of the metal nut 6 is sleeved outside the plastic joint connecting part 43. By arranging the plastic joint connecting part 43, the metal nut 6 and the second plastic joint 4 can be stably connected together, and the sealing performance between the second plastic joint 4 and the metal nut 6 can be greatly improved by arranging two second sealing rings 5.

[0024] As shown in the figure, Figure 2 and Figure 4 As shown in the figure, the outer wall of the other end of the second plastic joint 4 away from the second annular connecting port 42 is provided with a plastic joint connecting part 43 protruding outward, and the outer wall of the plastic joint connecting part 43 is provided with two second annular grooves 44, and the number of the second sealing ring 5 is two, and the two second sealing rings 5 are respectively sleeved in the corresponding second annular grooves 44, and the outer wall of one end of the metal nut 6 is sleeved outside the plastic joint connecting part 43. By arranging the plastic joint connecting part 43, the metal nut 6 and the second plastic joint 4 can be stably connected together, and the sealing performance between the second plastic joint 4 and the metal nut 6 can be greatly improved by arranging two second sealing rings 5.

[0025] AsFigures 2-4 As shown, the inner wall of the mouth of the nut connecting mouth 65 is provided with a first guide slope 66, and the outer side of the connecting part snap ring 45 is provided with a second guide slope 46 matched with the first guide slope 66. When the metal nut 6 is assembled in the second plastic joint 4, the first guide slope 66 and the second guide slope 46 can play a guiding role.

[0026] As a preferred mode of the utility model, the plastic water pipe 1 is a PEX high-density polyethylene water pipe, the first plastic joint 2 and the second plastic joint 4 are respectively PEX high-density polyethylene joints, and the metal nut 6 is a C36000 brass nut.

[0027] As shown, Figure 5 in combination with reference Figures 1-4 , the assembling mode of the utility model is as follows: first, referring to the (a) step diagram in Figure 5 , the plastic water pipe 1 and the first plastic joint 2 are mutually inserted and installed; second, referring to the (b) step diagram in Figure 5 , the inner wall between the plastic water pipe 1 and the first annular connecting mouth 12 of the first plastic joint 2 is welded; third, referring to the (c) step diagram in Figure 5 , the metal nut 6 is sleeved into the plastic water pipe 1; fourth, referring to the (d) step diagram in Figure 5 , the plastic water pipe 1 and the second plastic joint 4 are mutually inserted and installed, and the inner wall between the plastic water pipe 1 and the second annular connecting mouth 42 of the second plastic joint 4 is welded; fifth, referring to the (e) step diagram in Figure 5 , the first sealing ring 3 is installed on the first plastic joint 2, and the second sealing ring 5 is installed on the second plastic joint 4; sixth, referring to the (f) step diagram in Figure 5 , the metal nut 6 is pushed to the second plastic joint 4, so that the metal nut 6 is sleeved on the second plastic joint 4, and the assembly is completed.

[0028] The above is only a preferred embodiment of the utility model, and any slight modification, equivalent change and modification made according to the technical scheme of the utility model to the above embodiment all belong to the range of the technical scheme of the utility model.

Claims

1. A faucet inlet tube assembly, characterized by: The utility model provides a plastic water pipe, first plastic joint, first sealing ring, second plastic joint, second sealing ring and metal nut, first water inlet channel is equipped in the first plastic joint, one end of plastic water pipe is inserted in one end of first water inlet channel and is fixedly connected with the inner wall of first water inlet channel, first sealing ring is sleeved outside first plastic joint, second water inlet channel is equipped in the second plastic joint, the other end of plastic water pipe is inserted in one end of second water inlet channel and is fixedly connected with the inner wall of second water inlet channel, one end of metal nut is sleeved outside second plastic joint, second sealing ring is sleeved outside second plastic joint and is interference fit with the inner wall of metal nut, external thread is equipped outside metal nut.

2. The faucet inlet tube assembly of claim 1, wherein: One end of the first water inlet channel of the first plastic joint is provided with a first annular connecting port, and one end of the plastic water pipe is inserted into the first annular connecting port and welded with the inner wall of the first annular connecting port.

3. The faucet inlet tube assembly of claim 2, wherein: The outer wall of the end of the first plastic joint away from the first annular connecting port is provided with two first annular grooves in parallel, and the number of the first sealing rings is two, and the two first sealing rings are sleeved in the corresponding first annular grooves.

4. The faucet inlet tube assembly of claim 1, wherein: One end of the second water inlet channel of the second plastic joint is provided with a second annular connecting port, and the other end of the plastic water pipe is inserted into the second annular connecting port and welded with the inner wall of the second annular connecting port.

5. The faucet inlet tube assembly of claim 4, wherein: The outer wall of the end of the second plastic joint away from the second annular connecting port is provided with a plastic joint connecting portion protruding outward, two second annular grooves are arranged in parallel outside the plastic joint connecting portion, the number of the second sealing rings is two, and the two second sealing rings are sleeved in the corresponding second annular grooves, and one end of the metal nut is sleeved outside the plastic joint connecting portion.

6. The faucet inlet tube assembly of claim 5, wherein: The end of the plastic joint connecting portion away from the second annular connecting port is provided with a connecting portion snap ring protruding outward, one end of the metal nut is provided with a nut snap ring protruding inward, the middle part of the metal nut is provided with an annular clamping groove recessed outward, the nut snap ring is arranged on one side of the connecting portion snap ring, and the connecting portion snap ring is arranged in the annular clamping groove.

7. The faucet inlet tube assembly of claim 6, wherein: One end of the metal nut is provided with a nut head protruding outward, the external thread is arranged on the other end of the metal nut, and a nut connecting port is arranged in the other end of the metal nut.

8. The faucet inlet tube assembly of claim 7, wherein: The inner wall of the mouth of the nut connecting port is provided with a first guide inclined surface, and the outer side of the connecting portion snap ring is provided with a second guide inclined surface matched with the first guide inclined surface.

9. The faucet inlet tube assembly of any of claims 1-8, wherein: The plastic water pipe is a PEX high-density polyethylene water pipe, the first plastic joint and the second plastic joint are PEX high-density polyethylene joints respectively, and the metal nut is a brass nut.