CN-115823309-B - Tap preloading device

Abstract

The invention discloses a faucet pre-tightening device which comprises a body and a mounting pipe which are matched, wherein a pre-tightening assembly is arranged on the periphery of the mounting pipe, the pre-tightening assembly comprises an upper nut and a lower nut which are in threaded connection with the periphery of the mounting pipe, a gasket is arranged between the upper nut and the lower nut and is positioned on the periphery of the mounting pipe, and the gasket can be extruded and deformed by the upper nut and the lower nut so as to enable the mounting pipe to be tightly held by the pre-tightening assembly.

Inventors

• XU JIMING
• LU HAITAO
• JIAO JIANG

Assignees

• 厦门英仕卫浴有限公司

Dates

Publication Date

20260505

Application Date

20221102

Claims (7)

1. 1. A faucet pre-tightening device comprises a body and a mounting tube which are matched, and is characterized in that a pre-tightening assembly is arranged on the periphery of the mounting tube, the pre-tightening assembly comprises an upper nut and a lower nut which are in threaded connection with the periphery of the mounting tube, a gasket is arranged between the upper nut and the lower nut and located on the periphery of the mounting tube, the gasket can be extruded and deformed by the upper nut and the lower nut to enable the mounting tube to be tightly held by the pre-tightening assembly, the upper nut is connected with the lower nut in a matched mode, the lower nut can rotate relative to the upper nut, a first connecting ring is arranged below the upper nut, the gasket is arranged on the inner periphery of the first connecting ring, a clamping bump is arranged on the outer periphery of the first connecting ring, a connecting groove which can be matched with the clamping bump is formed in the outer periphery of the upper nut, a mounting cavity is formed in the upper nut and the lower nut, and the gasket is arranged in the mounting cavity.
2. 2. The faucet pre-tightening device according to claim 1, wherein an introduction groove capable of being matched with the clamping projection is formed above the lower nut from top to bottom, the introduction groove is located above the connecting groove and is connected with the connecting groove, the clamping projection can be rotationally clamped in the connecting groove after being introduced into the groove so as to realize connection of the upper nut and the lower nut, the arc length of the introduction groove is larger than that of the clamping projection, the arc length of the connecting groove is larger than that of the introduction groove, and the introduction groove is arranged above the connecting groove.
3. 3. The faucet pre-tightening device according to claim 2, wherein at least two clamping convex blocks distributed in a ring shape are arranged on the periphery of the first connecting ring, and connecting grooves and leading-in grooves corresponding to the number of the clamping convex blocks are arranged on the lower nut.
4. 4. A tap pretensioner according to any one of claims 1 to 3, wherein the lower nut is provided with a second connection ring, the first connection ring is located at an outer periphery of the second connection ring when the first connection ring is inserted into the lower nut, a mounting space for mounting the first connection ring and the clamping projection is provided between the outer periphery of the second connection ring and an inner periphery above the lower nut, the connection groove is located at an outer periphery of the second connection ring, the upper nut is located at an inner periphery of the first connection ring and provided with a first connection surface, and the gasket is located between the first connection surface and an upper end surface of the second connection ring.
5. 5. The faucet pretensioning apparatus according to claim 1, wherein the connecting groove has a height greater than a height of the snap-fit projection to effect relative movement of the upper nut and the lower nut in an axial direction.
6. 6. The faucet pre-tightening device according to claim 1, wherein an annular ring is arranged on the periphery of the upper nut, the annular ring can be received on the upper end face of the lower nut, an annular groove is formed between the lower end of the annular ring and the upper end of the clamping projection, the peripheral wall of the lower nut above the connecting groove can be positioned in the annular groove, and the height of the annular groove is larger than the distance between the upper side of the connecting groove and the lower nut.
7. 7. The faucet pre-tightening device according to claim 1, wherein a step surface is arranged above the installation tube, the installation tube above the step surface is in threaded connection with the body, the installation tube below the step surface can be in threaded connection with the installation hole of the installation table, the step surface and/or the body can be in butt joint with the upper end surface of the installation table, the pre-tightening assembly is arranged below the installation table, the upper end surface of the upper nut can be in butt joint with the lower end surface of the installation table, and after the installation tube is tightly held by the pre-tightening assembly, the installation tube and the pre-tightening assembly can synchronously rotate.

Description

Tap preloading device Technical Field The invention relates to a faucet pre-tightening device. Background The existing household faucet is repeatedly rotated in the use process, so that the mounting nut positioned under the platform can be loosened, the gap between the faucet and the platform basin is relatively large for a long time, the faucet can swing back and forth, water and other substances on the platform basin can flow to the lower part of the platform basin through the mounting hole on the platform surface, the mounting nut needs to be locked again after each loosening, the use is troublesome, and the mounting is particularly troublesome when the space below the platform basin is narrow. In summary, the two points are that 1, the mounting nut is easy to loosen after the faucet is used for a long time, so that the faucet swings back and forth, and 2, the locking nut needs to be repeatedly screwed, so that the faucet is inconvenient to use. Disclosure of Invention In order to solve the technical problems, the invention aims to provide a faucet pre-tightening device. The invention is realized by the following technical scheme: The utility model provides a tap preloading device, includes matched with body and installation pipe, the installation pipe periphery is provided with pretension subassembly, pretension subassembly includes the last nut and the lower nut of looks spiro union with the installation pipe periphery, be provided with the packing ring between last nut and the lower nut, the packing ring is located the installation pipe periphery, the packing ring can be by last nut and lower nut extrusion deformation so that installation pipe and pretension subassembly hug tightly. In the embodiment of the invention, the upper nut is connected with the lower nut in a matched manner, and the lower nut can rotate relative to the upper nut. In the embodiment of the invention, a first connecting ring is arranged below the upper nut, the gasket is arranged at the inner periphery of the first connecting ring, the outer peripheral wall of the first connecting ring is provided with a clamping convex block, the first connecting ring can be inserted above the lower nut, and the outer peripheral wall above the lower nut is provided with a connecting groove matched with the clamping convex block. In the embodiment of the invention, an introduction groove which can be matched with a clamping convex block is formed above the lower nut from top to bottom, the introduction groove is positioned above the connecting groove and is connected with the connecting groove, the clamping convex block can be rotationally clamped in the connecting groove after passing through the introduction groove so as to realize the connection of the upper nut and the lower nut, the arc length of the introduction groove is larger than that of the clamping convex block, the arc length of the connecting groove is larger than that of the introduction groove, and the introduction groove is arranged above the connecting groove. In the embodiment of the invention, at least two clamping convex blocks which are distributed in a ring shape are arranged on the periphery of the first connecting ring, and connecting grooves and leading-in grooves which are corresponding to the number of the clamping convex blocks are arranged on the lower nut. In the embodiment of the invention, the upper nut and the lower nut are provided with the mounting cavity, and the gasket is arranged in the mounting cavity. In the embodiment of the invention, the lower nut is provided with a second connecting ring, when the first connecting ring is inserted into the lower nut, the first connecting ring can be positioned at the outer periphery of the second connecting ring, an installation space for installing the first connecting ring and a clamping convex block is arranged between the outer periphery of the second connecting ring and the inner periphery above the lower nut, the connecting groove is positioned at the outer periphery of the second connecting ring, the inner periphery of the upper nut positioned in the first connecting ring is provided with a first connecting surface, and the gasket is positioned between the first connecting surface and the upper end surface of the second connecting ring. In the embodiment of the invention, the height of the connecting groove is larger than that of the clamping convex block so as to realize the relative movement of the upper nut and the lower nut in the axial direction. In the embodiment of the invention, the outer periphery of the upper nut is provided with an annular ring, the annular ring can be connected to the upper end face of the lower nut, an annular groove is formed between the lower end of the annular ring and the upper end of the clamping convex block, the peripheral wall of the lower nut above the connecting groove can be positioned in the annular groove, and the height of the annular groove is larger than the distanc