Faucet fastening sleeve

Abstract

The utility model relates to a faucet fastening sleeve, including fastening sleeve and clamping sleeve ring, the inside of fastening sleeve is equipped with internal thread, fastening sleeve and clamping sleeve ring split setting, the bottom end face of clamping sleeve ring is the wave shape curved surface that undulates continuously along the circumference, the curved surface is constituted by the wave crest and wave trough of periodical alternation. Adopt above -mentioned technical scheme, the utility model discloses through the clamping sleeve ring of detachable split body of setting on fastening sleeve, clamping sleeve ring can rotate independently in fastening sleeve, after fastening sleeve and faucet thread lock, fastening sleeve presses and holds clamping sleeve ring on the fixed surface, when the faucet has the loosening tendency and is vibrated, the small reverse rotation of fastening sleeve and faucet thread has occurred, the smooth inclined plane between the wave crest and wave trough of clamping sleeve ring curved surface can be extruded with the abutment portion of fastening sleeve, the reaction force produced by this extrusion can be decomposed into a circumferential component force, the direction of this component force is to push fastening sleeve to the tightening direction rotation, therefore, realize mechanical self -lock, prevent thread and prevent to take off.

Description

Technical Field

[0001] This utility model belongs to the field of fastening sleeve technology, and particularly relates to faucet fastening sleeve. Background Technology

[0002] In the bathroom industry, it is extremely common to install faucets through mounting holes on the countertop. Typically, the faucet's inlet pipe passes through the mounting hole and is then tightened onto the faucet's fixing threads from below the countertop using a nut or fastening sleeve, thus securing the faucet body to the countertop.

[0003] Currently, the mainstream integrated faucet fastening sleeve on the market is usually a plastic nut with internal threads. Although this structure is simple, it has significant defects in actual use: faucets are frequently subjected to circumferential torque and vibration caused by opening, closing, and turning operations in daily use. These external forces are transmitted to the fastening thread pair through the faucet body. The traditional fastening sleeve and faucet threads are rigidly connected. Under long-term continuous vibration and alternating loads, the thread pair is prone to slight relative displacement, leading to loose threads and faucet wobbling. Summary of the Invention

[0004] The purpose of this utility model is to overcome the defects of the prior art by providing a faucet fastening sleeve, which solves the problem of loose threaded connection at the faucet outlet.

[0005] The technical solution of this utility model is as follows: a faucet fastening sleeve, including a fastening sleeve and a retaining ring. The inner side of the fastening sleeve is provided with an internal thread. The fastening sleeve and the retaining ring are circumferentially rotatable. The bottom end face of the retaining ring is a continuously undulating curved surface along the circumference. The curved surface is composed of alternating peaks and troughs. The outer periphery of the fastening sleeve is provided with multiple abutting parts. After the fastening sleeve is tightened, the top surface of each abutting part abuts against a trough.

[0006] By adopting the above technical solution, a detachable retaining ring is fitted onto the fastening sleeve. The retaining ring can rotate independently of the fastening sleeve. After the fastening sleeve is locked to the faucet thread, the fastening sleeve presses against the retaining ring to fix it on the mounting surface of the countertop. When the faucet is vibrated and tends to loosen, a slight reverse rotation occurs between the fastening sleeve and the faucet thread. The smooth slope between the crests and troughs of the retaining ring's curved surface will squeeze against the contact part of the fastening sleeve. The reaction force generated by this squeezing can be decomposed into a circumferential component force. The direction of this component force is to push the fastening sleeve to rotate in the tightening direction. Therefore, any tendency to loosen will be automatically converted into an instantaneous locking torque, realizing mechanical self-locking and preventing the thread from coming off.

[0007] A further feature of this invention is that the top surface of the abutting part extends outward and upward at an angle, and the top surface of the abutting part abuts against the area of ​​the curved surface near the outer edge of the ferrule.

[0008] With the above-mentioned further configuration, the top surface of the abutting part extends obliquely outward to the area near the outer edge of the curved surface and abuts against it, so that the outer area of ​​the ferrule is supported by the abutting part, so that the top surface of the ferrule can contact the mounting plane of the platform, increasing the resistance required for relative rotation between the two, and preventing the ferrule from slipping and rotating, which would cause the self-locking anti-loosening mechanism to fail.

[0009] A further feature of this invention is that the top of the abutting part includes a protrusion adapted to the trough of the curved surface, and the area between the crest and trough of the curved surface is a smooth slope. The cross-section of the protrusion is triangular, and its two sides are guide slopes. After the fastening sleeve is tightened, the guide slope of the protrusion abuts against the smooth slope of the curved surface.

[0010] With the above-mentioned further configuration, after the fastening sleeve is tightened, the protrusion is placed in the trough of the curved surface, and the guide slopes on both sides of the protrusion abut against the smooth slopes on both sides of the trough of the curved surface. Thus, when vibration causes the retaining ring to have an upward tendency, the protrusion will be immediately squeezed outward and tangentially by the slope of the trough. Its inclined contact surface can instantly generate a circumferential locking force with a clear direction, and the self-locking response is more sensitive.

[0011] A further feature of this invention is that the fastening sleeve is provided with a limiting structure, the limiting structure including limiting blocks evenly distributed circumferentially on the top surface of the fastening sleeve, the limiting block including a boss protruding radially outward, the bottom of the boss of the limiting block forming a constraint surface, the inner ring of the retaining ring protruding inward with a ring-shaped snap-fit ​​portion, after the retaining ring is rotatably mounted on the fastening sleeve, the top surface of the snap-fit ​​portion and the constraint surface are in clearance fit or abut against each other.

[0012] With the above-mentioned further configuration, the limiting structure allows the ferrule to be locked onto the fastening sleeve. The fit between the constraint surface of the limiting block and the locking part determines the axial position of the ferrule on the fastening sleeve. This ensures that when no external force is applied, the wavy curved surface of the ferrule and the abutment part of the fastening sleeve always remain in contact, preventing the ferrule from sliding up and down and creating a gap between it and the abutment part. This would cause the fastening sleeve to have to pass through this gap before contacting the ferrule, resulting in the failure of the mechanical self-locking. Thus, the limiting structure eliminates this gap, allowing the anti-loosening mechanism to be activated immediately.

[0013] A further feature of this invention is that the top of the protruding part of the limiting block is provided with a chamfered structure.

[0014] With the above-mentioned further design, the chamfer forms a guiding bevel. When the ferrule is slightly tilted or misaligned, this bevel can naturally guide the locking part to slide into the correct position. In addition, the chamfer structure eliminates sharp edges, reducing the risk of scratching the limiting block or locking part during assembly.

[0015] A further feature of this invention is that the abutting part has a plate-like structure.

[0016] With the above-mentioned further configuration, the abutment part of the plate-like structure can serve as a handrail, making it convenient for users to rotate the fastening sleeve.

[0017] A further feature of this invention is that ratchet teeth are evenly distributed on the top of the ferrule along the circumferential direction.

[0018] With the above-mentioned further configuration, the ratchet increases the friction between itself and the table surface, preventing the ferrule from slipping and rotating after the fastening sleeve presses against the mounting surface, thus causing the self-locking anti-loosening mechanism to fail.

[0019] A further feature of this invention is that both the fastening sleeve and the retaining ring are made of plastic.

[0020] With the above-mentioned further configuration, the plastic fastening sleeve and retaining ring can be slightly deformed, allowing the retaining part of the retaining ring to smoothly press the limiting block below it. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a specific embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure from another perspective of a specific embodiment of the present utility model; Figure 3 for Figure 1 A magnified view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the overall structure of the fastening sleeve in a specific embodiment of the present utility model; Figure 5 This is a schematic diagram of the overall structure of the ferrule in a specific embodiment of this utility model.

[0022] In the figure: 1. Fastening sleeve; 11. Abutting part; 12. Limiting block; 121. Constraint surface; 2. Snap ring; 13. Protrusion; 2. Snap ring; 21. Curved surface; 22. Snap-fitting part; 23. Ratchet. Detailed Implementation

[0023] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] It should be noted that in the description of this utility model, all directional indicators such as up, down, front, back, etc. are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a number" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0027] like Figure 1-5 As shown, the faucet fastening sleeve includes a fastening sleeve 1 and a retaining ring 2. The fastening sleeve 1 and the retaining ring 2 are rotatably arranged relative to each other in the circumferential direction. The fastening sleeve 1 has a cylindrical structure and an internal thread on its inner side for screwing into the fixing thread at the lower end of the faucet. In this embodiment, the fastening sleeve 1 and the retaining ring 2 are separately detachable. It should be noted that they can also be non-detachable, as long as the retaining ring 2 can rotate coaxially relative to the fastening sleeve 1. The retaining ring 2 can be sleeved on the fastening sleeve 1. The bottom end face of the retaining ring 2 is a continuously undulating curved surface 21 along the circumference. The curved surface 21 is composed of periodically alternating peaks and troughs, and there is a smooth inclined surface between the peaks and troughs.

[0028] On the outer circumferential surface of the fastening sleeve 1, there are multiple abutting parts 11 distributed circumferentially. The abutting parts 11 are evenly distributed on the circumferential surface of the fastening sleeve 1. After the fastening sleeve 1 is tightened, the fastening sleeve 1 presses the retaining ring 2 against the mounting surface of the table. At this time, the top surface of each abutting part 11 abuts against a trough.

[0029] Furthermore, the top surface of the abutting part 11 abuts against the area of ​​the curved surface 21 near the outer edge of the ferrule 2; it should be noted that it is only necessary to achieve that the area of ​​the curved surface 21 near the outer edge of the ferrule 2 abuts against the abutting part 11, and the remaining part of the curved surface 21 can abut against the abutting part 11 or have a clearance fit. In this embodiment, the top surface of the abutting part 11 extends outward and upward at an angle, and only the highest point of the top surface of the abutting part 11 abuts against the area of ​​the curved surface 21 near the outer edge of the ferrule 2. This ensures that the outermost area of ​​the ferrule 2 is supported by the abutting part 11, so that the top surface of the ferrule 2 can contact the mounting plane of the table, increasing the resistance required for relative rotation between the two and preventing the ferrule 2 from slipping and rotating, which would cause the self-locking anti-loosening mechanism to fail.

[0030] In this embodiment, the abutment part 11 is preferably a plate-shaped structure, so that it can also be used as a handle for manually turning the fastening sleeve 1 during the initial installation, which facilitates initial fixation.

[0031] On the inner ring of the ferrule 2, there is a ring-shaped snap-fit ​​part 22 protruding inward.

[0032] This embodiment also includes a limiting structure, which includes multiple limiting blocks 12 evenly distributed circumferentially and a snap-fit ​​portion 22 with an annular structure protruding inward from the inner ring of the ferrule 2. Each limiting block 12 includes a boss that protrudes radially outward. The bottom of the boss forms a constraint surface 121. After the ferrule 2 is fitted onto the fastening sleeve 1, the top surface of the snap-fit ​​portion 22 is in clearance fit or abuts against the constraint surface 121, and the curved surface 21 of the ferrule 2 is placed on the upper end of the abutment portion 11, so that the ferrule 2 can be locked onto the fastening sleeve 1 and rotate.

[0033] Preferably, a chamfer structure is provided on the top of the protruding part of the limiting block 12, which can play a good guiding role during assembly.

[0034] Multiple ratchet teeth 23 are evenly distributed circumferentially on the top of the ferrule 2, which are used to engage with the mounting surface or installation tool on the faucet to prevent slippage.

[0035] In this embodiment, the retaining ring 2 is inserted from below the fastening sleeve 1. When the retaining ring 2 is pushed downward, its locking part 22, guided by the chamfer on the top of the limiting block 12, can smoothly pass over the limiting block 12 and finally reach the bottom of the protrusion of the limiting block 12.

[0036] After assembly, the ferrule 2 forms a clearance fit or abutment relationship with the constraint surface 121 of the limiting block 12 through its snap-fit ​​part 22. This limiting structure ensures that the ferrule 2 will not accidentally fall off the fastening sleeve 1, forming a sub-assembly that is easy to pick up and install. At the same time, it precisely defines the axial position of the ferrule 2, ensuring that the curved surface 21 at the bottom of the ferrule 2 is in stable contact with the top surface of each abutment part 11 of the fastening sleeve 1, and after the fastening sleeve 1 is tightened, the top surface of each abutment part 11 abuts against a trough.

[0037] Specifically, when the faucet is subjected to vibration during use, causing the fastening sleeve 1 to tend to rotate in the direction of loosening, a slight reverse rotation occurs between the fastening sleeve 1 and the faucet thread. The smooth slope between the crest and trough of the curved surface 21 of the retaining ring 2 will press against the contact part 11 of the fastening sleeve 1. The reaction force generated by this pressing can be decomposed into a circumferential component force. The direction of this component force is to push the fastening sleeve 1 to rotate in the tightening direction. Therefore, any tendency to loosen will be automatically converted into an instantaneous locking torque to achieve mechanical self-locking and prevent the thread from coming off.

[0038] In this embodiment, the top of the abutment portion 11 includes a protrusion 13 that is adapted to the trough of the curved surface 21. The peak and trough of the curved surface 21 are smooth slopes. The cross-section of the protrusion 13 is triangular, and its two sides are guide slopes. When the fastening sleeve 1 is tightened, the protrusion 13 is placed in the trough of the curved surface 21. The slope of the protrusion 13 abuts against the smooth slope of the curved surface 21. Thus, when the vibration causes the retaining ring 2 to have an upward tendency, the protrusion 13 will be immediately squeezed outward and tangentially by the slope of the trough. Its inclined contact surface can instantly generate a circumferential locking force with a clear direction, and the self-locking response is more sensitive.

[0039] In addition, the fastening sleeve 1 and the retaining ring 2 are preferably made of plastic. The slight elastic deformation characteristics of plastic allow the retaining ring 22 to be smoothly squeezed past the limiting block 12 during assembly.

Claims

1. A faucet fastening sleeve, comprising a fastening sleeve (1), wherein the fastening sleeve (1) has an internal thread on its inner side, characterized in that, It also includes a retaining ring (2), the fastening sleeve (1) and the retaining ring (2) are circumferentially rotatable, the bottom end face of the retaining ring (2) is a continuously undulating curved surface (21) along the circumference, the curved surface (21) is composed of alternating peaks and valleys; The fastening sleeve (1) has several abutting parts (11) on its outer periphery. After the fastening sleeve (1) is tightened, the top surface of each abutting part (11) abuts against a trough.

2. The faucet fastening sleeve according to claim 1, characterized in that, The top surface of the abutting part (11) extends outward and upward at an angle, and the top surface of the abutting part (11) abuts against the area of ​​the curved surface (21) near the outer edge of the ferrule (2).

3. The faucet fastening sleeve according to claim 1 or 2, characterized in that, The top of the abutment (11) includes a protrusion (13) that matches the trough of the curved surface (21).

4. The faucet fastening sleeve according to claim 3, characterized in that, The curved surface (21) has a smooth slope between the crest and trough. The cross-section of the protrusion (13) is triangular and has guide slopes on both sides. After the fastening sleeve (1) is tightened, the guide slope of the protrusion (13) abuts against the smooth slope of the curved surface (21).

5. The faucet fastening sleeve according to claim 1 or 2, characterized in that, The fastening sleeve (1) is provided with a limiting structure, which includes limiting blocks (12) evenly distributed circumferentially on the top surface of the fastening sleeve (1). The limiting block (12) includes a boss protruding radially outward. The bottom of the boss of the limiting block (12) forms a constraint surface (121). The inner ring of the ferrule (2) protrudes inward with a ring-shaped snap-fit ​​part (22). After the ferrule (2) is rotatably set on the fastening sleeve (1), the top surface of the snap-fit ​​part (22) and the constraint surface (121) are in clearance fit or abut against each other.

6. The faucet fastening sleeve according to claim 5, characterized in that, The top of the protruding part of the limiting block (12) is provided with a chamfer structure.

7. The faucet fastening sleeve according to claim 1 or 2, characterized in that, The abutment part (11) has a plate-like structure.

8. The faucet fastening sleeve according to claim 1 or 2, characterized in that, The top of the ferrule (2) is evenly distributed with ratchet teeth (23) along the circumferential direction.

9. The faucet fastening sleeve according to claim 1 or 2, characterized in that, Both the fastening sleeve (1) and the retaining ring (2) are made of plastic.

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