CN211820927U - Locking piece for improving firmness of faucet installation - Google Patents

Abstract

The utility model relates to a locking piece for improving the installation firmness of a tap, wherein the installation end of a tap main body is assembled on an installation platform through the locking piece; the locking member comprises a coil with external threads; the periphery of the external thread of the screw pipe is provided with at least one cutting groove, the screw pipe is provided with an anti-loosening cushion piece comprising a holding bulge and a jacking bulge, and the holding bulge is fittingly arranged in the cutting groove; the top pressure bulge is pressed by the mounting carrier platform to push the holding bulge to move towards the cutting groove until the holding bulge expands along the width and thickness directions to at least fill the local position of the cutting groove; the thread between the internal thread and the external thread rotates to gradually pull the local structure of the holding bulge to extend into the thread meshing gap until the thread meshing structure is held and locked. The tap is provided with the cutting groove on the locking solenoid and the holding protrusion, so that the locking part is not easy to loosen at the mounting end of the tap body after locking and mounting, and the firm mounting of the tap body is ensured.

Description

Locking piece for improving firmness of faucet installation

Technical Field

The utility model relates to a bathroom tap field especially indicates a retaining member of tap installation fastness improves.

Background

Most of the existing faucets are single-pipe structured faucets, such as single-cold faucets, cold-hot water mixing faucets, kitchen basin faucets and the like, and refer to the faucet structure shown by a kitchen faucet with double water outlets of a flexible pipe disclosed in the Chinese utility model patent (ZL 201821059809.1) with the application date of 2018.07.05; when the device is installed, the installation end of the device is locked and assembled on an installation carrying platform (such as an installation carrying platform of a stainless steel dish basin, a ceramic basin and the like) through a locking piece, the locking piece is usually composed of a metal solenoid and a metal nut or a plastic handle with a matched internal thread, and the installation mode is as follows: a. the metal solenoid is firstly assembled on the mounting end of the tap main body in a threaded connection way; b. the thin end of the cold and hot water inlet hose penetrates through the metal solenoid and is assembled on the cold and hot water inlet corresponding to the faucet main body; c. sequentially passing the thick end of the cold and hot water inlet hose and the metal solenoid through the mounting hole of the mounting platform deck; d. the metal nut or the plastic handle penetrates through the thick end of the cold and hot water inlet hose and is screwed and connected with the metal solenoid to lock the faucet main body on the mounting platform; e. and the mounting nut at the thick end of the cold and hot water inlet hose is in locking connection with the water supply end of the angle valve. The installation steps are multiple, and the operation is troublesome.

In addition, in practical use of the faucet (especially, a kitchen basin faucet and a single-pipe cold and hot water mixing faucet, refer to the structure of the flexible pipe double-outlet kitchen faucet continuously), the faucet is easily subjected to an acting force for driving the faucet to rotate due to frequent operations of rotating the water outlet pipe, the faucet handle and the like, and further, the metal nut or the plastic handle is easy to loosen, so that the locking state of the faucet body is released. Because the installation microscope carrier has recessed pond structure and the majority of installation microscope carrier leans on the wall installation for the locking operation that the user carried out metal nut or plastics handle can only be gone on in the narrow and small space between pond outer wall and the wall, receives the sight and is difficult to use the influence of factors such as appurtenance and makes the locking work degree of difficulty of metal nut or plastics handle very big, uses to have very big inconvenience. In the prior art, an improved scheme is provided for the locking nut to be easily loosened, but the locking nut is difficult to popularize and use due to the factors that the product applicability is small, the cost is high, the installation process is limited by space, the installation operation is complicated and the like because the structures of the faucet main body and the fittings of the faucet main body need to be greatly changed.

Disclosure of Invention

The utility model provides an improve retaining member of tap installation fastness to overcome the retaining member that current tap exists and loose easily, reset operation has inconvenient problem.

The utility model adopts the following technical scheme:

the locking piece improves the installation firmness of the faucet, and the installation end of the faucet main body is assembled on the installation platform deck through the locking piece in a locking manner; the locking piece comprises a locking handle and a solenoid with external threads; at least one cutting groove is arranged on the peripheral surface of the external thread of the spiral pipe, and the extending direction of the cutting groove is parallel to the generatrix of the spiral pipe or forms an acute included angle. The upper end of the solenoid is connected with the mounting end, the solenoid penetrates through the mounting platform deck, and the lower end of the solenoid is connected with the locking handle; the mounting carrying platform is clamped between the mounting end and the locking handle.

The solenoid is provided with a locking cushion piece, and the locking cushion piece is 82-94A Shore hardness. The anti-loosening cushion piece comprises a holding bulge and a jacking bulge, and the holding bulge is fittingly arranged in the cutting groove; in the process that the solenoid is close to and locked, the jacking protrusion is extruded by the mounting carrier platform to push the holding protrusion to move towards the cutting groove until the holding protrusion expands along the width and thickness directions to at least fill the local position of the cutting groove; in the process of locking the solenoid, the threads between the inner threads and the outer threads rotate to gradually pull the local structure of the holding protrusion to extend into the thread meshing gap until the thread meshing structure is held and locked.

In a further improvement, the width of the slot narrows gradually along the locking direction of the screw tube.

In a further improvement, the anti-loose gasket can be fixedly adhered to the designated position of the slot, but preferably, the anti-loose gasket can be freely adjusted on the slot in a sliding manner. And the structure of the anti-loose cushion piece is preferably as follows: firstly, each cutting groove is respectively provided with an independent anti-loosening cushion piece, a plurality of anti-loosening cushion pieces are respectively independent, and at the moment, the cutting groove can be set to be a sliding groove structure with a narrow opening and a wide bottom, so that the anti-loosening cushion pieces can slide in the cutting groove and are not easy to fall off. Secondly, a plurality of anti-loosening cushion pieces are connected into a whole through a connecting ring, and the connecting ring is sleeved on the peripheral surface of the spiral pipe.

In a further improvement, one end of the holding protrusion connected with the jacking protrusion is provided with a thickening structure protruding out of the external thread of the screw pipe.

In a further improvement, the coil is provided with a plurality of independent slots which are distributed at equal intervals.

In a further improvement, the connection mode of the faucet main body mounting end, the screw tube and the locking handle is preferably the following three modes:

in a first mode, the fixed end of the solenoid is fixedly connected with the locking handle into a whole, and the connecting end of the solenoid is in locking connection with the internal thread of the mounting end. The length of the spiral pipe is 9-35 mm, and the length of the locking handle is 25-95 mm; the thickness of the mounting carrier is 0.5-27.5 mm; the screwed pipe is a metal part, the locking part is a non-metal part, the fixed end of the screwed pipe is connected with the locking handle in an injection molding manner, and the circumferential surface of the fixed end of the screwed pipe is provided with anti-skid protrusions and/or anti-skid holes; the stiff end of this screwed pipe buries in advance in this locking handle's injection mould intracavity, and in the forming process of locking handle, this non-slip raised can imbed in the fashioned retaining member, and the retaining member also can imbed in this antiskid hole for this external screw thread spare is more firm with the body coupling of this retaining member, and the two is difficult to take place the relative rotation or the separation condition. The buried length of the fixed end of the solenoid is 3-5 mm; the length of the external thread of the spiral pipe is 5-25 mm. The outer peripheral surface of the locking handle is provided with anti-skid bulges or anti-skid grooves.

In a second mode, the fixed end of the solenoid is fixedly connected with the mounting end into a whole, and the connecting end of the solenoid is in locking connection with the internal thread of the locking handle.

In a third mode, a first external thread section is arranged at the upper end of the screw pipe, a second external thread section is arranged at the lower end of the screw pipe, and the screwing directions of the first external thread section and the second external thread section are opposite; the first external thread section is connected with the internal thread of the mounting end, and the second external thread section is connected with the internal thread of the locking handle.

From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses a tap is through having the configuration of grooving on the locking screwed pipe and holding the arch tightly, and in the process that the screwed pipe closes on locking, should hold the arch tightly and can extend to in the meshing insection to hold tightly, lock the screw-thread engagement structure between the internal and external screw thread, make the installation end of tap main part be difficult to appear the not hard up condition of retaining member after the locking installation, guaranteed the firm installation of tap main part, and the utility model discloses a locking installation operation and the retaining member dismantlement operation of the installation end of tap are the same with the operation of current tap, do not need extra operation, and it is very convenient to use; in addition, the cutting groove can be formed only by simple cutting operation on the internal thread corresponding to the existing faucet, and the processing and forming process of the cutting groove is simple, easy to realize and low in implementation cost. In addition, through the integral connection of the solenoid and the locking piece, the length of the solenoid of 10-25 mm can be shortened, and the solenoid only needs to be provided with an external thread in a single rotation direction, so that the manufacturing cost of the solenoid is effectively reduced, the manufacturing procedures of the solenoid are reduced, the manufacturing difficulty of the solenoid is reduced, the faucet is suitable for assembling the existing faucet main body, a user only needs to perform one-time threaded connection operation of the solenoid, and the locking operation of the solenoid is more convenient.

Drawings

Fig. 1 is a partially sectional structural schematic view of a faucet according to a first embodiment.

Fig. 2 is a schematic sectional view taken along line a-a in fig. 1 and a partially enlarged view thereof.

FIG. 3 is a schematic view of a faucet in the second embodiment in a partial sectional view.

FIG. 4 is a schematic view of a third embodiment of a faucet in partial cross-section.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Referring to fig. 1 and 2, a locking member 3 for improving the mounting firmness of the faucet is provided, and a mounting end 11 of a faucet main body 1 is locked and assembled on a mounting platform 4 through the locking member 3. The locking piece 3 comprises a locking handle 31 and a screw tube 32 with external threads; at least one or a plurality of independent cutting grooves 320 are arranged on the peripheral surface of the external thread of the spiral pipe 32, and the plurality of independent cutting grooves 320 are distributed at equal intervals; preferably, the width of the cutting groove 320 gradually narrows along the locking direction of the spiral tube 32, and preferably, the width of the cutting groove 320 is 5-15 mm, and the extending direction of the cutting groove 320 is parallel to the generatrix of the spiral tube 32 or forms an acute angle with the generatrix. The upper end of the screw tube 32 is connected with the mounting end 11, the screw tube 32 penetrates through the mounting carrier 4 and the lower end thereof is connected with the locking handle 31; the mounting stage 4 is interposed between the mounting end 11 and the lock handle 31.

The solenoid 32 is provided with a locking pad 2, and the locking pad 2 is preferably a locking pad 2 with Shore hardness of 82-94A. The anti-loose pad 2 comprises a holding protrusion 21 and a pressing protrusion 22, wherein the holding protrusion 21 is fittingly installed in the slot 320. When the screw tube 32 is to be locked, the pressing projection 22 receives the pressing force of the mounting stage 4, and the force is transmitted inward to the holding projection 21 through the pressing projection 22, so that the holding projection 21 is moved inward and diffused in the width direction and the thickness direction of the groove 320 to fill the groove 320, and the holding projection 21 is further promoted to extend into the thread engagement gap between the internal thread and the external thread. That is, during the process of locking the screw tube 32, the pressing protrusion 22 is pressed by the mounting stage 4 to push the holding protrusion 21 to move toward the slot 320 until the holding protrusion 21 expands along the width and thickness direction to fill at least a partial position of the slot 320. In the locking process of the screw tube 32, the thread between the internal thread and the external thread rotates to gradually pull the local structure of the holding protrusion 21 (the local structure is mainly the lateral edge structure in the width direction of the holding protrusion 21) to extend into the thread engagement gap until the thread engagement structure is held tightly. This locking backing member 2 is through holding the configuration of protruding 21 tightly for leading main part 1's installation end 11 is in the locking operation, and this local structure of holding protruding 21 tightly can extend to in the meshing clearance of thread engagement structure and hold it tightly, lock, thereby is difficult to the condition emergence that this thread engagement structure pine separates of appearing in the use of tap, and the installation stability of tap is effectively promoted, uses more conveniently.

With continued reference to fig. 1-4, the anti-loose pad 2 may be fixedly adhered to the designated position of the slot 320, but preferably the anti-loose washer is freely slidably adjustable on the slot 320. And the structure of the anti-loosing pad element 2 is preferably as follows: first, as shown in fig. 3, each of the cutting grooves 320 is configured with an independent anti-loose pad 2, and the anti-loose pads 2 are independent from each other, at this time, the cutting grooves 320 may be configured as a sliding groove structure with a narrow opening and a wide bottom, so that the anti-loose pad 2 can slide in the cutting grooves 320 and is not easy to fall off. Secondly, as shown in fig. 1 and 4, the anti-loose pad pieces 2 are connected into a whole by a connection ring 23, and the connection ring 23 is sleeved on the outer peripheral surface of the spiral tube 32.

In a further improvement, the end of the clasping protrusion 21 connected with the top pressure protrusion 22 has a thickened structure 211 protruding out of the external thread of the screw tube 32. The configuration of the thickening structure 211 enables the holding protrusion 21 to be effectively reduced in the movement amount of the holding protrusion 21 in the cutting groove 320 when being pressed by the pressing protrusion 22, and is beneficial to the holding protrusion 21 to expand along the width and depth directions of the cutting groove 320 at a required position to quickly fill the cavity of the cutting groove 320 at the required position, so that the local structure of the holding protrusion 21 is promoted to extend into the engagement gap of the internal thread and the external thread, and the extension efficiency of the holding protrusion 21 is improved.

With continued reference to FIGS. 1-4, the attachment of the mounting end 11 of the main faucet body 1, the threaded tube 32 and the locking handle 31 is preferably accomplished in three ways:

in a first mode, with reference to fig. 1, the fixed end of the screw tube 32 is fixedly connected with the locking handle 31 as a whole, and preferably, the screw tube 32 is a metal piece, and the locking handle 31 is a non-metal piece; the connecting end of the screw tube 32 is connected with the internal thread piece of the mounting end 11 of the tap main body 1; the gap (length range indicated by a mark a in fig. 1) between the internal thread of the mounting end 11 of the conventional faucet main body 1 and the hot and cold water inlet in the faucet main body 1 is usually 30 to 40mm, and therefore, the solenoid 32 of the present embodiment can be applied to the conventional faucet main body 1 without changing the structure of the conventional faucet main body 1. The length of above-mentioned solenoid 32 is 9 ~ 35mm, and the length of above-mentioned locking handle 31 is 25 ~ 95mm, and longer locking handle 31 can increase user's the area of gripping, can improve the travelling comfort of gripping, and the user only need grip usually can screw this part, operates more comfortablely and convenient. The connection length b of the solenoid 32 and the end of the faucet main body 1 is usually 5 to 8mm, and the thickness c of the mounting platform 4 is 0.5 to 27.5 mm; the fixed end and the locking handle 31 are integrally connected in an injection molding mode, and the buried length d of the fixed end is 3-5 mm. The length of the external thread of the screw tube 32 is 5-25 mm. In actual production, if only the coil 32 with a single specification is produced for standardized production and enhanced universality, the length of the coil 32 is preferably 30-35 mm; if a plurality of specifications of solenoid 32 (the inner diameter and the outer diameter of the solenoid 32 are set according to the standard size of the existing fittings) are provided according to the installation stages 4 with different thicknesses in order to reduce manufacturing materials and purchase cost, a short type (the length of the external thread is 9-12 mm, the installation stage 4 with the thickness of 0.5-4.5 mm is suitable for stainless steel materials), a medium type (the length of the external thread is 20-23 mm, the installation stage 4 with the thickness of 5-15 mm is suitable for toughened glass materials) and a long type (the length of the external thread is 30-35 mm, the installation stage 4 with the thickness of 15-27.5 mm is suitable for ceramics, marble and other materials) can be set, wherein the longer type of the three types is also suitable for installation of the installation stage 4 with the smaller thickness; the consumer can purchase the coil 32 with the corresponding specification according to the actual requirement, so as to reduce the purchase cost, reduce the waste of the manufacturing material of the coil 32 and improve the installation convenience.

Through the integrative setting of being connected of solenoid 32 and locking handle 31, can shorten 10 ~ 25 mm's this solenoid 32 length, and the solenoid 32 only need dispose the external screw thread that a turns to, both effectively reduce this solenoid 32 manufacturing cost, also reduced this solenoid 32 manufacturing procedure, reduce its manufacturing difficulty, the user only need carry out the threaded connection operation of solenoid 32 once for this solenoid 32's locking operation is more convenient.

Further, with continued reference to fig. 1, the circumferential surface of the fixed end of the coil 32 is provided with anti-slip protrusions and/or anti-slip holes 323; the stiff end of this screwed pipe 32 buries in advance in this locking handle 31's injection mould intracavity, and at locking handle 31's forming process, this non-slip raised can imbed in the fashioned locking handle 31, and locking handle 31 also can imbed in this non-slip hole for this screwed pipe 32 is more firm with this locking handle 31's body coupling, and the relative rotation or the separation condition are difficult to take place for the two. Further, the locking handle 31 is provided with anti-slip protrusions or anti-slip grooves 310 on the outer circumferential surface thereof to increase the friction force thereof, which is advantageous for the user to perform the operation of holding and tightening the locking handle 31.

The installation method of the cold and hot faucet (the installation method of the single cold faucet is simpler and not described herein) of the embodiment is as follows: a. the thin end (plug end with external threads) of the cold and hot water inlet hose 5 sequentially passes through the locking handle 31 and the solenoid 32 and passes through the mounting hole of the mounting platform 4 from bottom to top; b. the thin end of the cold and hot water inlet hose 5 is assembled on the cold and hot water inlet corresponding to the faucet body 1; c. the upper end of the solenoid 32 passes through the mounting hole of the mounting platform deck 4 and is connected with the faucet main body 1, and then the faucet main body 1 is locked on the mounting platform deck 4; d. the mounting nut of the thick end (the end with the hexagon nut) of the cold and hot water inlet hose 5 is connected with the water supply end of the angle valve in a locking way. Because the sight and the entity that do not have this solenoid 32 block during the installation of the thin end of cold and hot intake hose 5 of this mounting means, the person of facilitating the use observes and aims at the mounting hole in leading main part 1, and hold the position and can more be close to the thin end of intake hose 5 and make when rotating hose 5, hold the hose 5 of locating to between the thin end and be difficult to warp, and then improve the transmission efficiency of the rotation effort of hand to the steering effort of this thin end, make the installation of the thin end of hose 5 more convenient. And the length of the solenoid 32 and the thread length of the outer peripheral surface thereof are smaller, so that the number of rotation turns in the locking process of the solenoid 32 is reduced, the locking operation times are reduced (only one locking operation of the solenoid 32 and the faucet body 1 is needed), the locking operation of the faucet body 1 is simpler and more convenient, the use of manufacturing materials of the solenoid 32 is reduced, and the manufacturing cost is reduced.

In a second mode, referring to fig. 3, the fixed end of the coil 32 is fixedly connected with the mounting end 11 of the faucet body 1, that is, the upper end of the coil 32 is fixedly connected with the bottom end of the faucet body 1, the lower end of the coil 32 penetrates through the mounting platform 4 and then is locked and connected by the locking handle 31 and the anti-loosening pad 2, and at this time, the anti-loosening pad 2 is assembled between the bottom surface of the mounting platform 4 and the top surface of the locking handle 31.

Third, referring to fig. 4, the mounting end 11 and the locking handle 31 of the faucet body 1 are respectively provided with the internal thread members, and the mounting end 11 and the locking handle 31 are respectively connected with the end portions of the screw tube 32; namely, the tap body 1, the screw tube 32 and the locking handle 31 are three separate parts, the upper end of the screw tube 32 is locked and connected with the tap body 1 through a first external thread section 321, the lower end of the screw tube 32 is locked and connected with the locking handle 31 through a second external thread section 322, and the screwing directions of the first external thread section 321 and the second external thread section 322 are opposite. At this time, the female screws in the faucet body 1 and the locking handle 31 are each provided with the above-mentioned notch 320, and the above-mentioned lock washers 2 are respectively provided between the faucet body 1 and the top surface of the mounting platform 4, and between the bottom surface of the mounting platform 4 and the locking handle 31. With reference to fig. 4, when the engagement distance between the internal thread and the external thread is relatively fixed, the locking connection structure between the first external thread 321 and the main faucet body 1 can fix and adhere the anti-loosening pad 2 to the specified position of the slot 320. With reference to fig. 4, when the engagement stroke of the internal thread and the external thread is not fixed (the thicknesses of the mounting stages made of different materials are different), for example, when the lower end of the screw tube 32 is locked to the locking handle 31 by the second external thread section 322, three independent slots 320 are formed on the circumferential surface of the second external thread section 322 of the screw tube 32 at equal intervals, the extending direction of the slots 320 is parallel to the axial direction of the screw tube 32 (preferably parallel) or at an acute angle (i.e., the extending direction of the bottom of the slots 320 is parallel to the axial direction of the screw tube 32 or at an angle of 0 to 75 °), preferably, the width of the slots 320 is 1.5 to 25mm, and preferably, the width of the slots 320 is gradually narrowed along the locking direction of the screw tube 32. The anti-loosing pad 2 is sleeved on the outer peripheral surface of the second external thread section 322; before the second outside thread section 322 is unlocked, the clasping protrusion 21 of the anti-loosening pad 2 can freely slide along the extending direction of the cutting groove 320, when the second outside thread section 322 is close to and locked, the jacking protrusion 22 of the anti-loosening pad 2 is extruded by the mounting platform deck 4 to enable the clasping protrusion 21 to be filled with the cutting groove 320 along the width and thickness directions, and when the second outside thread section 322 is further locked, the clasping protrusion 21 is extruded and under the combined action of the friction force of the second outside thread section 322 (having a pulling action on the clasping protrusion 21), part of the clasping protrusion 21 can extend into the thread meshing gap of the inside and outside threads, so that the clasping and locking functions of the thread meshing structure are realized.

The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims (10)

1. The locking piece improves the installation firmness of the faucet, and the installation end of the faucet main body is assembled on the installation platform deck through the locking piece in a locking manner; the method is characterized in that: the locking member comprises a coil with external threads;

the peripheral surface of the external thread of the spiral pipe is provided with at least one cutting groove, and the extending direction of the cutting groove is parallel to the generatrix of the spiral pipe or forms an acute included angle;

the screwed pipe is provided with a locking cushion piece, the locking cushion piece comprises a holding bulge and a jacking bulge, and the holding bulge is fittingly arranged in the cutting groove; in the process that the solenoid is close to and locked, the jacking protrusion is extruded by the mounting carrier platform to push the holding protrusion to move towards the cutting groove until the holding protrusion expands along the width and thickness directions to at least fill the local position of the cutting groove; in the process of locking the solenoid, the threads between the inner threads and the outer threads rotate to gradually pull the local structure of the holding protrusion to extend into the thread meshing gap until the thread meshing structure is held and locked.

2. A retaining member for improving the security of a faucet mounted as recited in claim 1, wherein: the width of the cutting groove is gradually narrowed along the locking direction of the solenoid.

3. A retaining member for improving the security of a faucet mounted as recited in claim 1, wherein: each cutting groove is independently provided with the anti-loosening cushion piece; or, the anti-loosening cushion pieces are connected into a whole through the connecting ring, and the connecting ring is sleeved on the outer peripheral surface of the spiral pipe.

4. A retaining member for improving the security of a faucet mounted as recited in claim 1, wherein: one end of the holding protrusion connected with the jacking protrusion is provided with a thickening structure protruding out of the external thread of the screw pipe.

5. A retaining member for improving the security of a faucet mounted as recited in claim 1, wherein: the solenoid is provided with a plurality of independent slots which are distributed at equal intervals.

6. A retaining member for improving the security of a faucet mounted as recited in claim 1, wherein: the locking piece further comprises a locking handle, the upper end of the solenoid is connected with the mounting end, the solenoid penetrates through the mounting platform deck, and the lower end of the solenoid is connected with the locking handle; the mounting carrying platform is clamped between the mounting end and the locking handle.

7. A retaining member for improving the security of a faucet mounted as recited in claim 6, wherein: the fixed end of the solenoid is fixedly connected with the locking handle into a whole, and the connecting end of the solenoid is connected with the internal thread of the mounting end in a locking manner.

8. A retaining member for improving the security of a faucet mounted as recited in claim 7, wherein: the length of the spiral pipe is 9-35 mm, and the length of the locking handle is 25-95 mm; the thickness of the mounting carrier is 0.5-27.5 mm; the solenoid is a metal piece, the locking piece is a non-metal piece, the fixed end of the solenoid is connected with the locking handle in an injection molding mode, and the buried length of the fixed end of the solenoid is 3-5 mm; the length of the external thread of the spiral pipe is 5-25 mm.

9. A retaining member for improving the security of a faucet mounted as recited in claim 6, wherein: the fixed end of the solenoid is fixedly connected with the mounting end into a whole, and the connecting end of the solenoid is locked and connected with the internal thread of the locking handle.

10. A retaining member for improving the security of a faucet mounted as recited in claim 6, wherein: the upper end of the screw pipe is provided with a first external thread section, the lower end of the screw pipe is provided with a second external thread section, and the screwing directions of the first external thread section and the second external thread section are opposite; the first external thread section is connected with the internal thread of the mounting end, and the second external thread section is connected with the internal thread of the locking handle.

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