Water outlet device with good sealing stability

Abstract

The novel water outlet device with good sealing stability comprises a water distribution disc upper cover and a water distribution disc middle partition; the water distribution disc upper cover is provided with a base, and first and second water distribution channels arranged side by side on the base; an annular welding seat surface is formed on the base, and the projection of the welding seat surface on the axial direction simultaneously surrounds the first and second water distribution channels; the water distribution disc middle partition is provided with a seat hole matched with the base, the seat hole is formed with an annular welding step surface corresponding to the welding seat surface, and the first and second water distribution channels are arranged through the seat hole; and the welding seat surface and the welding step surface form an annular first welding sealing interface through ultrasonic welding. The novel water outlet device has the technical effects of simplified structure and good sealing stability.

Description

Technical Field

[0001] This invention relates to the field of sealing technology for fluid transport devices, specifically to a water outlet device with good sealing stability. Background Technology

[0002] Water dispensing devices, such as the aerators commonly found at the end of faucets, have one of their core functions in ensuring high-standard sealing performance at each connection interface to prevent leaks while transferring and distributing water flow. Such devices typically involve the assembly of multiple water dispensing components, and how to achieve reliable and durable sealing between these components has always been a key focus of technical research in this field.

[0003] Traditional sealing methods often rely on individual sealing rings (such as O-rings). These are installed at the mating surfaces of the two water distribution bodies. However, this method has some inherent drawbacks: First, as independent consumable parts, the sealing rings are prone to aging and deformation during long-term use, leading to seal failure. Second, the assembly process requires additional pressing steps and demands high dimensional accuracy from the parts; otherwise, inadequate pressing or excessive compression can cause damage. Third, when sealing multiple independent flow channels, a separate sealing ring is often needed for each channel, increasing not only the complexity and cost of the parts but also creating a potential leakage point between the two sealing rings.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned problems and proposed a water outlet device with good sealing stability that can effectively solve the aforementioned technical problems, thus giving rise to this case. Summary of the Invention

[0005] The purpose of this invention is to provide a water outlet device with good sealing stability, which has the technical advantages of simplified structure and good sealing stability.

[0006] To achieve the above objectives, the novel solution is as follows: A water outlet device with good sealing stability includes a water distribution plate cover and a water distribution plate partition; the water distribution plate cover is provided with a base, and a first water distribution channel and a second water distribution channel arranged side by side on the base; an annular welding seat surface is formed on the base, and the axial projection of the welding seat surface simultaneously surrounds the first water distribution channel and the second water distribution channel; the water distribution plate partition is provided with a seat hole adapted to the base, and the seat hole forms an annular welding step surface corresponding to the welding seat surface, and the first water distribution channel and the second water distribution channel are arranged through the seat hole; the welding seat surface and the welding step surface are ultrasonically welded to form an annular first welding sealing interface.

[0007] The welding seat surface and the welding step surface are in the shape of a racetrack or a figure-eight shape with a through-hole.

[0008] The first and second water distribution channels each have a flange at their root, and the seat hole has two support surfaces that cooperate to support the flange.

[0009] The water distribution plate cover is also provided with a water distribution hole and an annular groove surrounding the water distribution hole. The water distribution plate is provided with an annular insertion end protruding towards the water distribution plate cover. The annular insertion end is adapted to be inserted into the annular groove and together with the annular groove forms a third water distribution channel. The end face of the annular insertion end and the bottom of the annular groove are ultrasonically welded to form an annular second welded sealing interface.

[0010] The annular groove has a groove bottom and a first sidewall and a second sidewall located on both sides of the groove bottom. The first sidewall and the second sidewall respectively radially limit the two sides of the annular plug end. The second welding sealing interface is formed between the end face of the annular plug end and the groove bottom, and extends to the area where the annular plug end mates with the first sidewall and the second sidewall.

[0011] The perimeter of the second welded sealing interface is different from that of the first welded sealing interface, and the second welded sealing interface and the first welded sealing interface are misaligned in the axial direction.

[0012] The perimeter of the second welded sealing interface is smaller than that of the first welded sealing interface, and the second welded sealing interface is located above the first welded sealing interface in the axial direction.

[0013] The annular plug end has ribs on its water outlet side, corresponding to a position away from the seat hole, to limit axial water flow.

[0014] The water distribution plate is provided with a water-blocking part, which is located axially upward below the annular insertion end and closer to the side where the seat hole is located.

[0015] After adopting the above solution, the advantages of this new type of water outlet device with good sealing stability compared with the prior art are as follows: This new water outlet device uses a continuous, annular first welded sealing interface to simultaneously seal the assembly gap between the two water distribution channels and the water distribution plate partition, achieving integrated sealing. Compared with the prior art that sets an independent sealing ring for each water distribution channel, on the one hand, the structure of this new device is simpler, not only saving space, but also avoiding the complex structure of arranging two independent sealing rings in a small space, eliminating the need for sealing rings and reducing assembly difficulty; on the other hand, the first welded sealing interface acts like a sturdy hoop, firmly connecting the water distribution plate cover and the water distribution plate partition together, enhancing the rigidity, integrity, and stability of the entire structural assembly. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the water outlet device; Figure 2 This is a cross-sectional exploded view of the water outlet device; Figure 3 The structure of the water distribution plate cover Figure 1 ; Figure 4 The structure of the water distribution plate cover Figure 2 ; Figure 5 Partial cross-sectional view of this novel water outlet device Figure 1 ; Figure 6 This is a partial exploded view of the structure of this novel water outlet device; Figure 7 This is a schematic diagram of the structure of the partition in the water distribution plate of this novel invention.

[0017] Label Explanation Fluid flow assembly 100, water outlet 101, water distribution plate assembly 200, water outlet body assembly 300; Water distribution plate cover 1, water distribution hole 1A, water distribution hole 1B, water distribution hole 1C, water distribution hole 1D, annular groove 11, groove bottom 110, first side wall 111, second side wall 112; base 12, welded seat surface 121, first water distribution channel 13, flange 131, second water distribution channel 14, flange 141; water distribution plate partition 2, annular plug end 22, end face 220, rib 221; seat hole 23, welded stepped surface 231, support surface 232, water blocking part 24; water outlet 4, inner flow channel 401, outer flow channel 402, rectifier 5; first welded sealing interface H1, second welded sealing interface H2. Detailed Implementation

[0018] The structure and working principle of the relevant water outlet device (specifically the aerator) involved in this case are as follows.

[0019] like Figure 1-4 As shown, the water outlet device mainly consists of a fluid flow assembly 100, a water distribution plate assembly 200, and a water outlet assembly 300 connected sequentially along the water flow direction. Among them, the water distribution plate assembly 200 and the water outlet assembly 300 are fixedly assembled and can rotate together relative to the fluid flow assembly 100, thereby realizing the switching of different water spray patterns.

[0020] The fluid flow assembly 100 is provided with a water outlet 101. The water distribution plate assembly 200 includes a water distribution plate upper cover 1, a water distribution plate middle partition 2, and a water distribution plate lower cover 3 arranged sequentially along the axial direction. The water distribution plate upper cover 1 is provided with four independent water distribution holes (water distribution hole 1A, water distribution hole 1B, water distribution hole 1C, and water distribution hole 1D), which correspond to four independent water outlet channels. The water outlet body assembly 300 mainly includes a water outlet body 4 and a rectifier 5; the water outlet body 4 is provided with an inner flow channel 401 and an outer flow channel 402, and the rectifier 5 is installed in the inner flow channel 51.

[0021] By rotating the water distribution plate assembly 200 and the water outlet assembly 300, the water outlet 101 of the fluid flow assembly 100 can be aligned and connected with any designated water distribution hole on the upper cover 1 of the water distribution plate, thereby guiding the water flow into the corresponding water outlet path and realizing four different water outlet modes: (1) When the water outlet 101 is aligned with the water distribution hole 1A, the first water outlet mode is formed (see Figure 1 (Water flow route A), the water flows sequentially through the first water distribution hole 1A, the water distribution plate partition 2, the water distribution plate lower cover 3, and the rectifier 5 in the inner flow channel 401 before flowing out.

[0022] (2) When the water outlet 101 is aligned with the water distribution hole 1B, a second water outlet mode is formed (see Figure 1 (B water flow route), after the water flows through the water distribution hole 1B, it enters the channel formed by the water distribution plate cover 1 and the water distribution plate partition 2, and finally flows out from the outer flow channel 402 of the water outlet body 4.

[0023] (3) When the water outlet 101 is aligned with the water distribution hole 1C, a third water outlet mode is formed. After the water flows through the water distribution hole 1C, it passes through the water distribution path formed by the water distribution hole 1C extending directly downward (see Figure 1 (C label) flowed out.

[0024] (4) When the water outlet 101 is aligned with the water distribution hole 1D, a fourth water outlet mode is formed. After the water flows through the water distribution hole 1D, it passes through the water distribution path formed by the water distribution hole 1D extending directly downward (see Figure 1 (The D label) was leaked.

[0025] This case involves a water outlet device with good sealing stability, such as... Figure 5-7 As shown, it includes a water distribution plate cover 1 and a water distribution plate partition 2.

[0026] The water distribution plate cover 1 is provided with a base 12, and a first water distribution channel 13 and a second water distribution channel 14 arranged side by side on the base 12. An annular welding seat surface 121 is formed on the base 12, and the axial projection of the welding seat surface 121 simultaneously surrounds the first water distribution channel 13 (i.e., Figure 1 (C label in the middle) and the second waterway 14 (i.e. Figure 1 (D label in the text).

[0027] The water distribution plate is provided with a seat hole 23 that is adapted to the base 12. The seat hole 23 forms an annular welding step surface 231 corresponding to the welding seat surface 121. The first water distribution channel 13 and the second water distribution channel 14 are provided through the seat hole 23. The welding seat surface 121 and the welding step surface 231 are formed by ultrasonic welding to form an annular first welding sealing interface H1.

[0028] This novel water outlet device, through a cleverly designed integrated welded seat 121 that surrounds both water channels, simultaneously surrounds two water distribution channels (first water distribution channel 13 and second water distribution channel 14), achieves the sealing of two independent water distribution channels with a continuous and uninterrupted welded sealing interface. This avoids the risk of leakage weak areas between the two water distribution channels from the structural root, simplifies the sealing structure, and greatly improves the sealing stability and reliability.

[0029] This novel water outlet device employs an integrated seal, highly integrating the two water distribution channels and their sealing structure, reducing the number of parts and assembly interfaces, resulting in a more compact overall structure. Simultaneously, the surrounding welded sealing interface forms a robust integrated connection, effectively enhancing the structural rigidity of the water outlet device under internal and external pressure.

[0030] The new design of the base 12 and the seat hole 23, as well as the through water distribution channel, provides natural guidance and initial positioning for the assembly of the water distribution plate cover 1 and the water distribution plate partition 2, simplifying the assembly process and reducing production difficulty.

[0031] In a preferred embodiment, the welding seat surface 121 and the welding step surface 231 are in the shape of a racetrack or a figure-eight shape with a through-hole. The racetrack or figure-eight shape is the contour that best matches the shape of the two side-by-side water channels. It can tightly surround the two water channels with the smallest space size, avoiding the space waste caused by using a large circle, realizing the miniaturization design of the water outlet device, and also preventing circumferential rotation of the connection structure, further improving the stability and reliability of the connection.

[0032] In a preferred embodiment, the root of the first water distribution channel 13 and the second water distribution channel 14 are each provided with a flange 131 / flange 141, and the seat hole 23 is provided with two support surfaces 232 that cooperate to support the flange.

[0033] The fit between the flange and the supporting surface provides a clear and stable axial positioning reference between the upper cover 1 and the middle partition 2 of the water distribution plate. This ensures that the gap between the welding seat surface 121 and the welding step surface 231 remains constant and uniform during ultrasonic welding, thus ensuring the formation of a high-quality, high-strength first weld sealing interface H1. Furthermore, the flange and the supporting surface form a support structure that bears most of the axial pressure during welding, preventing the stress concentration area at the root of the water distribution channel from compressing, deforming, or being damaged under pressure. This ensures the stability and reliability of product dimensional accuracy and welding quality.

[0034] For the preferred solution, please refer to [link / reference]. Figure 4-6As shown, the upper cover 1 of the water distribution plate is provided with a water distribution hole 1A and an annular groove 11 surrounding the water distribution hole 1A. The annular groove 11 includes a groove bottom 110, a first sidewall 111 located on both sides of the groove bottom 110, and a second sidewall 112. The water distribution plate partition 2 is provided with an annular insertion end 22 protruding towards the upper cover 1 of the water distribution plate; the annular insertion end 22 is adapted to be inserted into the annular groove 11, and together with the annular groove 11, forms a third water distribution channel (the water outlet channel corresponding to the A water flow route). The end face 220 of the annular insertion end 22 and the groove bottom 110 of the annular groove 11 are ultrasonically welded to form an annular second welded sealing interface H2.

[0035] The annular groove 11 of this novel water outlet device, consisting of a groove bottom 110, a first sidewall 111, and a second sidewall 112, forms a robust whole. During ultrasonic welding, the annular groove 11 concentrates and precisely guides the welding energy to the welding area of ​​the groove bottom 110, ensuring efficient energy utilization and more evenly distributing residual welding stress, thus reducing the risk of seal failure due to stress concentration. Therefore, ultrasonic welding using this structure can form a high-quality second weld sealing interface H2, avoiding insufficient or over-welding caused by energy dispersion, significantly improving the welding yield, and greatly enhancing the overall sealing reliability and stability.

[0036] The annular groove 11 is a U-shaped groove formed by the groove bottom 110, the first side wall 111 and the second side wall 112. During assembly, it plays a natural guiding and preliminary positioning role for the insertion of the annular plug end 22, thus simplifying the assembly process and making the assembly and welding operations faster and more reliable.

[0037] In a preferred embodiment, the annular groove 11 has a groove bottom 111 and a first sidewall 111 and a second sidewall 112 located on both sides of the groove bottom. The first sidewall 111 and the second sidewall 112 respectively radially limit the two sides of the annular insertion end 22. The second welding sealing interface H2 is formed between the end face 220 of the annular insertion end 22 and the groove bottom 110, and extends to the area where the annular insertion end 22 mates with the first sidewall 111 and the second sidewall 112.

[0038] The second welded sealing interface H2 is formed not only between the end face 220 of the annular insertion end 22 and the bottom of the groove 110, but also extends to the mating area between the end face 220 of the annular insertion end 22 and the side wall (first side wall 111 / second side wall 112). This forms an axial seal formed by the groove bottom and the end face, and a radial seal formed by the groove wall and the side wall. The axial and radial seals together constitute a composite sealing interface. This achieves a three-dimensional seal from the end face to the side wall, effectively blocking more potential leakage paths and improving sealing reliability and stability. The radial upper side wall mates with the side wall, and the structural design itself has a certain clearance tolerance. During welding, the melting and flow of the material can fill small dimensional tolerances, thus ensuring a high degree of consistent sealing quality even in mass production.

[0039] In a preferred embodiment, the second welded sealing interface H2 includes a melting zone (the central region radially upwards of the tank bottom 110) formed by the in-situ melting of the raw material, and a fusion zone (the two radially adjacent regions of the tank bottom 110 near the first sidewall 111 / second sidewall 112) formed by the overflow of the raw material to the periphery. The melting zone and the fusion zone work together to ensure sealing strength while adapting to dimensional tolerances and deformations, filling all microscopic unevenness, especially the corner positions between the tank bottom 110 and the sidewalls (first sidewall 111 / second sidewall 112), achieving true all-around, dead-angle-free microscopic sealing and maintaining an effective and long-term sealing effect.

[0040] In a preferred embodiment, the perimeter of the second weld sealing interface H2 is different from the perimeter of the first weld sealing interface H1, and the second weld sealing interface H2 and the first weld sealing interface H1 are offset in the axial direction. Specifically, the perimeter of the second weld sealing interface H2 is smaller than the perimeter of the first weld sealing interface H1, and the second weld sealing interface H2 is located axially above the first weld sealing interface H1.

[0041] By making the perimeter and axial position of the two welding sealing interfaces (the first welding sealing interface H1 and the second welding sealing interface H2) different, the two sealing interfaces are spatially staggered and do not interfere with each other, so as to avoid the welding interface cracking or sealing failure caused by resonance effect, thereby improving the long-term sealing stability.

[0042] Preferred solutions, such as Figure 7 As shown, the annular plug end 22 has a rib 221 at the water outlet side, corresponding to the position away from the seat hole 23, to block the axial water flow.

[0043] Because the third water distribution channel is off-axis, the outflowing water will naturally deflect to one side of the rectification chamber. By setting ribs 221 on the water outlet side of the annular plug end 22, the deflected water flow can be effectively blocked and guided, causing it to change direction and flow towards the opposite side of the deviation. This solves the problem of uneven initial water flow distribution in the rectification chamber caused by the offset outlet, ensuring that the subsequent rectification process can be carried out fully and efficiently in the entire rectification chamber, thereby ultimately obtaining a stable and gentle water outlet state.

[0044] Preferred solutions, such as Figure 7 As shown, the water distribution plate is provided with a water-blocking part 24 at the 2nd interval. The water-blocking part 24 is located axially below the annular insertion end 22 and closer to the side where the seat hole 23 is located. The water-blocking part 24 works in conjunction with the rib 221. The rib 221 is responsible for guiding the water flow to the other side, and the water-blocking part 24 is responsible for receiving and buffering the impact on the guiding side, further promoting the uniform diffusion of water flow in the rectification cavity.

[0045] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A water outlet device with good sealing stability, characterized in that: The device includes a water distribution plate cover and a water distribution plate partition; the water distribution plate cover has a base and a first water distribution channel and a second water distribution channel arranged side by side on the base; the base has an annular welding seat surface, the axial projection of which simultaneously surrounds the first water distribution channel and the second water distribution channel; the water distribution plate partition has a seat hole adapted to the base, the seat hole has an annular welding step surface corresponding to the welding seat surface, and the first water distribution channel and the second water distribution channel are arranged through the seat hole; the welding seat surface and the welding step surface are ultrasonically welded to form an annular first welding sealing interface.

2. The water outlet device with good sealing stability as described in claim 1, characterized in that: The welding seat surface and the welding step surface are in the shape of a racetrack or a figure-eight shape with a through-hole.

3. The water outlet device with good sealing stability as described in claim 1, characterized in that: The first and second water distribution channels each have a flange at their root, and the seat hole has two support surfaces that cooperate to support the flange.

4. The water outlet device with good sealing stability as described in claim 1, characterized in that: The water distribution plate cover is also provided with a water distribution hole and an annular groove surrounding the water distribution hole. The water distribution plate is provided with an annular insertion end protruding towards the water distribution plate cover. The annular insertion end is adapted to be inserted into the annular groove and together with the annular groove forms a third water distribution channel. The end face of the annular insertion end and the bottom of the annular groove are ultrasonically welded to form an annular second welded sealing interface.

5. The water outlet device with good sealing stability as described in claim 4, characterized in that: The annular groove has a groove bottom and a first sidewall and a second sidewall located on both sides of the groove bottom. The first sidewall and the second sidewall respectively radially limit the two sides of the annular plug end. The second welding sealing interface is formed between the end face of the annular plug end and the groove bottom, and extends to the area where the annular plug end mates with the first sidewall and the second sidewall.

6. The water outlet device with good sealing stability as described in claim 4, characterized in that: The second welded sealing interface includes a melting zone formed by in-situ melting of the raw material and a fusion zone formed by the overflow of the raw material to the periphery.

7. The water outlet device with good sealing stability as described in claim 4, characterized in that: The perimeter of the second welded sealing interface is different from that of the first welded sealing interface, and the second welded sealing interface and the first welded sealing interface are misaligned in the axial direction.

8. A water outlet device with good sealing stability as described in claim 4 or 7, characterized in that: The perimeter of the second welded sealing interface is smaller than that of the first welded sealing interface, and the second welded sealing interface is located above the first welded sealing interface in the axial direction.

9. A water outlet device with good sealing stability as described in claim 4, characterized in that: The annular plug end has ribs on its water outlet side, corresponding to a position away from the seat hole, to limit axial water flow.

10. A water outlet device with good sealing stability as described in claim 4, characterized in that: The water distribution plate is provided with a water-blocking part, which is located axially below the annular insertion end and closer to the side where the seat hole is located.

Images