A concealed pull-out device for a faucet hose

Abstract

The present invention belongs to the technical field of faucets, and in particular to a concealed pulling and drawing device for a faucet hose, comprising a concealed box, a water valve installed inside the concealed box, and a nozzle installed on the surface of the concealed box, and also comprising a winding shaft arranged inside the concealed box and a hose 1 wound on the surface of the winding shaft, wherein a water outlet of the water valve is rotatably connected to a sleeve 1 through a rotating sealing ring, the hose 1 is fixedly connected to a water outlet hole 1 opened on the surface of the sleeve 1, a screw rod 1 is arranged inside the sleeve 1, and an end of the screw rod 1 is fixedly connected to the surface of the water valve, and when the hose 1 is pulled following the nozzle, one end of the winding shaft moves along the central axis of the screw rod 1 toward a containing shell fixed on one side of the concealed box to maintain the outlet angle of the hose 1 when it is pulled out of the concealed box; in the process of realizing the pulling and drawing of the soft faucet hose, the present invention keeps the outlet angle and outlet position of the hose unchanged.

Description

Technical Field

[0001] The invention belongs to the technical field of faucets, and in particular relates to a concealed pulling device for a faucet hose. Background Art

[0002] Pull-out faucets have been widely used by people. Their pull-out and fixable features have brought a lot of convenience to people. At the same time, for the sake of beautiful design, pull-out faucets are mostly installed in a concealed manner.

[0003] In the use of the existing pull-out faucet, the reel arranged inside the concealed box rotates in place to realize the retraction and extension of the hose. In this method, since the outlet of the faucet is fixed during the pulling and pulling process, the angle of the hose coming out of the concealed box varies during the pulling and pulling action, and the hose is prone to getting stuck.

[0004] In order to solve the above problems, the present application proposes a concealed pull-out device for a faucet hose. Summary of the invention

[0005] The present invention provides a concealed pulling device for a faucet hose, which can effectively solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a concealed pull-out device for a faucet hose, comprising a concealed box, a water valve installed inside the concealed box, and a spray head installed on the surface of the concealed box;

[0007] The utility model also comprises a wire winding shaft arranged inside the concealed box and a hose 1 wound on the surface of the wire winding shaft, the water outlet of the water valve is rotatably connected with a sleeve 1 through a rotating sealing ring, the hose 1 is fixedly connected to a water outlet hole 1 opened on the surface of the sleeve 1, a screw rod 1 is arranged inside the sleeve 1, and the end of the screw rod 1 is fixedly connected to the surface of the water valve, when the hose 1 follows the nozzle to be pulled, one end of the wire winding shaft moves along the central axis of the screw rod 1 toward the containing shell fixed on one side of the concealed box to maintain the outlet angle of the hose 1 when it is pulled out of the concealed box, and the containing shell 1 is fixedly connected to the surface of the water valve, and the hose 1 is pulled out of the concealed box. A coil spring box 1, a coil spring 1 and a limit piece are arranged inside the shell, and the limit piece includes a limit block and an adjusting groove. After the nozzle is stretched to a set position, it is locked by the limit block and the adjusting groove and unlocked in cooperation with the coil spring 1. A graded positioning piece is arranged inside the concealed box, and the graded positioning piece includes a button 1, a friction plate 1 and a friction cam. When in use, the friction force between the friction plate 1 and the friction cam causes the hose 1 to be locked once each time it is stretched out to a set length. When the button 1 is pressed, the friction plate 1 does not contact the friction cam, and the hose 1 contracts under the action of the coil spring 1.

[0008] As a preferred concealed pulling device for a faucet hose of the present invention, the wire winding shaft includes a winding post slidably connected to the surface of the sleeve, the surface of the screw rod is threadedly connected to a threaded block, the surface of the winding post is provided with a threaded constraint groove, the winding post is fixedly connected to the threaded block, the end of the screw rod away from the water valve is located inside the accommodating shell, the winding post is rotatably connected to the coil spring box, one end of the coil spring is fixedly connected to the coil spring box, and the other end of the coil spring is fixedly connected to the winding post.

[0009] As a preferred concealed pulling device for a faucet hose of the present invention, the winding shaft includes two connecting rings 1 arranged on the outside of the screw rod 1, a multi-stage telescopic rod 1 arranged in a ring array around the screw rod 1, and a constraint block 1 fixedly connected to the surface of each telescopic section of the multi-stage telescopic rod 1, the connecting ring 1 close to the water valve is fixedly connected to the multi-stage telescopic rod 2, the other end of the multi-stage telescopic rod 2 is fixedly connected to the sleeve 1, the constraint block 1 is spirally arranged along the axial direction of the screw rod 1, the multi-stage telescopic rod 1 is fixedly connected to the two connecting rings 1, and one of the connecting rings 1 is rotatably connected to the In the coil spring box 1, one end of the coil spring 1 is fixedly connected to the coil spring box 1, and the other end of the coil spring 1 is fixedly connected to the corresponding connecting ring 1. The surface of each telescopic section of the multi-stage telescopic rod 1 is fixedly connected with a spring rod 2, and the surface of the telescopic part of the spring rod 2 is provided with a convex portion. The end of the spring rod 2 is fixedly connected with a wire block, and the wire block is slidingly connected to the wire rod 1 through a thread on the surface of the wire rod 1. The interior of the connecting ring 1 located inside the coil spring box 1 is fixedly connected with a separation block in an annular array, and the telescopic section of the multi-stage telescopic rod 1 close to the water valve is fixedly connected with a push rod.

[0010] As a preferred concealed pulling device for a faucet hose of the present invention, a magnetic block is arranged between two adjacent telescopic sections of the multi-stage telescopic rod, and the two adjacent magnetic blocks are arranged to be mutually exclusive.

[0011] As a preferred concealed pull-out device for a faucet hose of the present invention, a guide tube is provided between the sleeve 1 and the hose 1, one end of the guide tube is fixedly connected to a water outlet hole 1 opened on the surface of the sleeve 1, and the hose 1 is fixedly connected to the other end of the guide tube.

[0012] As a preferred concealed pulling device for a faucet hose of the present invention, the limiting member also includes a U-shaped block fixedly connected to the surface of the containing shell, a positioning hole is provided directly below the U-shaped block, a toggle hole is provided on the surface of the containing shell, two ends of the limiting block are respectively inserted into the positioning hole and the toggle hole, an adjustment groove is provided on the surface of the containing shell, a compression spring is provided on the surface of the U-shaped block, and one end of the compression spring is fixedly connected to the U-shaped block.

[0013] As a preferred concealed pull-out device for a faucet hose of the present invention, the adjustment groove includes a trapezoidal slot entrance, a heart-shaped adjustment opening, a heart-shaped block located in the adjustment opening, and an adjustment step 1 and an adjustment step 2 arranged in the adjustment opening.

[0014] As a preferred concealed pulling device for a faucet hose of the present invention, the graded positioning member also includes a connecting rod 1 arranged inside the button 1, the friction plate 1 is rotatably connected to the inside of the concealed box, the end of the connecting rod 1 away from the button 1 is hinged to the friction plate 1, the friction cam is rotatably arranged in the concealed box, and the friction cam is located between the hose 1 and the friction plate 1.

[0015] As a preferred concealed pulling and pulling device for a faucet hose of the present invention, a button includes a sliding sleeve fixedly connected to a through circular groove opened on the surface of the concealed box, two sliding rings slidably connected to the sliding sleeve, and a spring arranged between the two sliding rings, the two ends of the spring are respectively fixedly connected to the two sliding rings, a push button is slidably connected to the interior of the sliding sleeve, the bottom surface of the push button is rotatably connected to a rotating block through a bearing, the connecting rod is hinged on the bottom surface of the rotating block, a wire groove is opened on the surface of the push button, a protrusion is fixedly connected to the interior of the sliding sleeve, and the protrusion is slidably connected to the wire groove opened on the surface of the push button.

[0016] As a preferred concealed pulling device for a faucet hose of the present invention, a round rod is fixedly connected to the circular hole opened on the surface of the friction cam, and spring rods are rotatably connected to the two ends of the round rod respectively, and the spring rods are fixedly connected to the inner wall of the concealed box respectively.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By using the screw rod 1, the winding column 1, the threaded block 1, the accommodating shell and the coil spring 1, the nozzle can keep the angle and position of the hose 1 extending out of the concealed box unchanged during the process of driving the hose 1 out of the concealed box, thereby preventing the occurrence of wire jamming; by using the multi-stage telescopic rod 1, the pushing rod, the spring rod 2, the screw block, the convex part, the separating block and the multi-stage telescopic rod 2, the space of the accommodating shell can be reduced while keeping the angle and position of the hose 1 extending out of the concealed box unchanged, thereby reducing the size of the concealed box; by using the sliding sleeve, the sliding ring, the spring 1, the pressing By using a button, a connecting rod, a friction plate, a friction cam and a round rod, the hose can be fixed in stages during the process of being pulled out of the concealed box, so that the extended length of the hose can be fixed in multiple positions, which is convenient for users to use; by using a U-shaped block, a positioning hole, a toggle hole, a compression spring, a limit block, an inlet slot, a heart-shaped block, an adjustment port, an adjustment step one and an adjustment step two, the hose can be kept fixed after being pulled to a maximum length or a set length, and when the hose is reset, it can be reset by lightly pulling the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the installation structure of the guide tube in the present invention.

[0022] Figure 3 It is a schematic diagram of the installation structure of the containing shell in the present invention.

[0023] Figure 4 It is a schematic diagram of the installation structure of the winding pole 1 in the present invention.

[0024] Figure 5 It is a schematic diagram of the installation structure of the screw rod 1 in the present invention.

[0025] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle.

[0026] Figure 7 It is a schematic diagram of the installation structure of the limit block in the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle.

[0028] Fig. 9 It is a schematic diagram of the installation structure of the connecting rod 1 in the present invention.

[0029] Fig.10 It is a schematic diagram of the installation structure of spring 1 in the present invention.

[0030] Fig.11 It is a schematic diagram of the installation structure of the wire block in the present invention.

[0031] Fig.12 It is a schematic diagram of the installation structure of the constraint block 1 in the present invention.

[0032] Fig.13 It is a schematic diagram of the installation structure of the separation block in the present invention.

[0033] Fig.14 It is a schematic diagram of the installation structure of the multi-stage telescopic rod 2 in the present invention.

[0034] Fig.15 It is an enlarged view of point C in 5 of the present invention.

[0035] In the figure:

[0036] 101. concealed box; 102. nozzle; 103. water valve;

[0037] 201, sleeve 1; 202, winding column 1; 203, screw rod 1; 204, thread block 1; 205, thread clamping block; 206, coil spring box 1; 207, limit strip 1; 208, strip limit groove 1; 209, accommodating shell; 210, coil spring 1; 211, limit cover plate; 212, clamping convex block; 213, hose 1; 214, clamping cavity; 215, regular hexagonal groove; 216, regular hexagonal part; 217, guide tube; 218, constraint groove; 219, limit strip 2; 2191, strip limit groove 2; 220, multi-stage telescopic rod 1; 221, connecting ring 1; 222, constraint block 1; 223, spring rod 2; 224, thread block; 225, convex 226, extension block; 227, separation block; 228, push rod; 229, multi-stage telescopic rod two; 230, U-shaped block; 231, positioning hole; 232, toggle hole; 233, compression spring; 234, limit block; 235, slot; 236, heart-shaped block; 237, adjustment port; 238, adjustment step one; 239, adjustment step two; 241, sliding sleeve; 242, sliding ring; 243, spring one; 244, push button; 245, connecting rod one; 246, friction plate one; 247, round rod two; 248, rotating block; 249, friction cam; 251, spring rod one; 252, round rod one; 253, wire groove one; 254, bump one. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Figures 1 to 15 As shown, the present invention provides a technical solution, a concealed pull-out device for a faucet hose, comprising a concealed box 101, a water valve 103 installed inside the concealed box 101, and a spray head 102 installed on the surface of the concealed box 101;

[0040] like Figures 1 to 15 As shown, it also includes a winding shaft arranged inside the concealed box 101 and a hose 213 wound on the surface of the winding shaft. The water outlet of the water valve 103 is rotatably connected to the sleeve 201 through a rotating sealing ring. The hose 213 is fixedly connected to a water outlet hole 1 opened on the surface of the sleeve 201. A screw rod 203 is arranged inside the sleeve 201. The end of the screw rod 203 is fixedly connected to the surface of the water valve 103. When the hose 213 follows the nozzle 102 and is pulled, one end of the winding shaft moves along the central axis of the screw rod 203 toward the accommodating shell 209 fixed on one side of the concealed box 101 to maintain the outlet angle of the hose 213 when it is pulled out of the concealed box 101, so as to accommodate The shell 209 is provided with a coil spring box 206, a coil spring 210 and a limiter inside, the limiter includes a limit block 234 and an adjustment slot, after the nozzle 102 is stretched to the set position, it is locked by the limit block 234 and the adjustment slot and unlocked in cooperation with the coil spring 210, the concealed box 101 is provided with a graded positioning member inside, the graded positioning member includes a button 1, a friction plate 246 and a friction cam 249, when in use, the friction force between the friction plate 246 and the friction cam 249 causes the hose 213 to be locked once each time it is stretched out to a set length, and when the button 1 is pressed, the friction plate 246 and the friction cam 249 are not in contact, and the hose 213 contracts under the action of the coil spring 210.

[0041] like Figures 1 to 15 As shown, the winding shaft includes a winding post 202 slidably connected to the surface of a sleeve 201, a threaded block 204 is threadedly connected to the surface of a screw rod 203, a threaded constraint groove 218 is provided on the surface of the winding post 202, the winding post 202 is fixedly connected to the threaded block 204, one end of the screw rod 203 away from the water valve 103 is located inside the accommodating shell 209, the winding post 202 is rotatably connected in a coil spring box 206, one end of a coil spring 210 is fixedly connected to the coil spring box 206, and the other end of the coil spring 210 is fixedly connected to the winding post 202.

[0042] like Figures 1 to 15As shown, a guide tube 217 is provided between the sleeve 201 and the hose 213 , one end of the guide tube 217 is fixedly connected to a water outlet hole 1 opened on the surface of the sleeve 201 , and the hose 213 is fixedly connected to the other end of the guide tube 217 .

[0043] like Figures 1 to 15 As shown, the limiting member also includes a U-shaped block 230 fixedly connected to the surface of the containing shell 209, a positioning hole 231 is opened directly below the U-shaped block 230, and a toggle hole 232 is opened on the surface of the containing shell 209. The two ends of the limiting block 234 are respectively inserted into the positioning hole 231 and the toggle hole 232, and the adjustment groove is opened on the surface of the containing shell 209. A compression spring 233 is arranged on the surface of the U-shaped block 230, and one end of the compression spring 233 is fixedly connected to the U-shaped block 230.

[0044] like Figures 1 to 15 As shown, the adjustment slot includes a trapezoidal slot entrance 235 , a heart-shaped adjustment opening 237 , a heart-shaped block 236 located in the adjustment opening 237 , and an adjustment step 1 238 and an adjustment step 239 arranged in the adjustment opening 237 .

[0045] like Figures 1 to 15 As shown, a graded positioning member is provided in the concealed box 101, and the graded positioning member also includes a connecting rod 1 245 arranged inside the button 1, a friction plate 1 246 is rotatably connected to the interior of the concealed box 101, and one end of the connecting rod 1 245 away from the button 1 is hinged to the friction plate 1 246, and a friction cam 249 is rotatably provided in the concealed box 101, and the friction cam 249 is located between the hose 1 213 and the friction plate 1 246.

[0046] like Figures 1 to 15 As shown, the button 1 includes a sliding sleeve 241 fixedly connected to a through circular groove 1 provided on the surface of the concealed box 101, two sliding rings 242 slidably connected to the sliding sleeve 241, and a spring 1 243 arranged between the two sliding rings 242, the two ends of the spring 1 243 are respectively fixedly connected to the two sliding rings 242, a push button 244 is slidably connected inside the sliding sleeve 241, the bottom surface of the push button 244 is rotatably connected to a rotating block 248 through a bearing 1, a connecting rod 1 245 is hinged on the bottom surface of the rotating block 248, a wire groove 1 253 is provided on the surface of the push button 244, a protrusion 1 254 is fixedly connected inside the sliding sleeve 241, and the protrusion 1 254 is slidably connected in the wire groove 1 253 provided on the surface of the push button 244.

[0047] like Figures 1 to 15 As shown, a round rod 252 is fixedly connected in a round hole 1 opened on the surface of the friction cam 249 , and spring rods 251 are rotatably connected to the two ends of the round rod 252 , and the spring rods 251 are fixedly connected to the inner wall of the concealed box 101 .

[0048] like Figures 1 to 15 As shown, it should be noted that: the switch of the water valve 103 is installed on the surface of the concealed box 101, the nozzle 102 is located outside the concealed box 101, and one end of the hose 213 is fixedly connected to the water inlet of the nozzle 102. The working principle and working process of the water valve 103 and the nozzle 102 are well known in the prior art and will not be elaborated here.

[0049] Working principle: When the nozzle 102 is pulled out of the concealed box 101, the hose 1 213 follows the nozzle 102 and extends toward the outside of the concealed box 101. When the hose 1 213 extends, the friction between the hose 1 213 and the winding post 1 202 drives the winding post 1 202 to rotate.

[0050] In this embodiment, the winding post 202 and the thread block 204 are fixed by setting a clamping protrusion 212 on the thread block 204, and the clamping protrusion 212 is clamped in the clamping cavity 214 by the thread clamping block 205 and the thread of the winding post 202. At this time, the winding post 202 and the thread block 204 are relatively fixed along the axial direction of the winding post 202. A regular hexagonal groove 215 is set in the winding post 202, and the part of the surface of the thread block 204 located on the left side of the clamping protrusion 212 is set as a regular hexagonal part 216. The surface of the regular hexagonal part 216 is in contact with the inner wall of the regular hexagonal groove 215, so that when the winding post 202 rotates, the thread block 204 is driven to rotate synchronously;

[0051] In this embodiment, the threaded block 204 moves along the screw rod 203 toward the direction of the accommodating shell 209 during rotation, thereby driving the winding post 202 to move toward the direction of the accommodating shell 209. This process allows the hose 213 to maintain the same position and angle when extending to the outside of the concealed box 101, thereby preventing the nozzle 102 from getting stuck during the pulling process. When the winding post 202 moves toward the accommodating shell 209, the limiting strip 207 on the surface of the sleeve 201 slides inside the strip limiting groove 208 provided inside the winding post 202, and drives the sleeve 201 to rotate along with the rotation of the winding post 202, thereby ensuring the smooth pulling action of the hose 213.

[0052] In this embodiment, when the winding post 202 moves to the right, the limiting strip 219 on the coil spring box 206 will slide inside the strip limiting groove 2191, so that the coil spring box 206 will slide to the right along the inner wall of the accommodating shell 209, and at the same time, the coil spring 210 inside the coil spring box 206 will be rolled, increasing the elastic potential energy of the coil spring 210, accumulating power for the return of the hose 213, and the limiting cover plate 211 makes it easy to install the coil spring 210 inside the coil spring box 206, and at the same time generates a restraining force on the coil spring 210 along the axial direction of the coil spring box 206 to prevent the coil spring 210 from detaching from the coil spring box 206;

[0053] In this embodiment, when the screw rod 203 pushes the coil spring box 206 to move to the maximum position or the set position inside the accommodating shell 209, the end of the limit block 234 located at the toggle hole 232 will enter the inside of the adjustment port 237 along the inner wall of the inlet notch 235. At this time, stopping pulling the hose 213 will cause the end of the limit block 234 to hook into the recess of the heart-shaped block 236. In this state, when the hose 213 needs to be reset, the hose 213 is pulled again. Under the elastic potential energy of the compression spring 233 on the U-shaped block 230 and the cooperation of the positioning hole 231 and the toggle hole 232, , so that the end of the limit block 234 is separated from the concave area of ​​the heart-shaped block 236 along the inner wall of the adjustment opening 237 and under the constraints of the adjustment ladder 1 238 and the adjustment ladder 2 239, and slides out of the adjustment groove along the adjustment opening 237 and the inner wall of the slot 235. At this time, under the action of the elastic potential energy of the coil spring 1 210, the winding post 1 202 is rotated and reset, and the hose 1 213 that has been pulled out of the concealed box 101 is pulled back into the concealed box 101, and the hose 1 213 is neatly rewound on the surface of the winding post 1 202 under the guidance of the constraint groove 218;

[0054] In this embodiment, when the hose 1 213 is pulled outside the concealed box 101, the friction cam 249 rotates under the action of friction. The spring rod 1 251 and the round rod 247 prevent the friction cam 249 from excessively squeezing and deforming the hose 1 213 during the rotation. The friction cam 249 periodically rubs the surface of the friction plate 1 246 during the rotation. When the hose 1 213 is pulled to a certain position but does not reach the set position, the hose 1 213 will move under the action of the coil spring 1 210. The interior of the concealed box 101 contracts slightly, and during this process, the friction cam 249 rotates at a certain angle until the friction cam 249 rubs against the friction plate 1 246. This friction force overcomes the elastic potential energy of the coil spring 1 210 until the two reach a balance. The hose 1 213 maintains the extension amount unchanged, so that the user can use the nozzle 102. When the nozzle 102 is used and the hose 1 213 needs to be retracted, the push button 244 is pressed to make the push button 244 move toward the inside of the sliding sleeve 241 to overcome the spring. During this process, the friction plate 246 rotates with the wire groove 253 fixed on the surface of the concealed box 101 through the bearing 2 under the push of the connecting rod 145, so that the friction cam 249 does not contact the friction plate 246. At this time, the hose 213 is reset under the elastic potential energy of the coil spring 210. When the user does not need to use the friction cooperation between the friction cam 249 and the friction plate 246, the push button 244 can be pushed downward inside the sliding sleeve 241. Press until the protrusion 254 moves to the annular part inside the wire groove 253. At this time, the pressing button 244 can be rotated to make the protrusion 254 separate from the vertical part of the wire groove 253. Under the action of the protrusion 254 in this state, the pressing button 244 is stuck in the inside of the sliding sleeve 241, that is, the friction plate 246 and the friction cam 249 are always kept separated. The function of the sliding ring 242 and the rotating block 248 is to keep the connecting rod 245 from rotating during the rotation of the pressing button 244.

[0055] Example 2, based on Example 1, Figure 9-Figure 14 , the present invention provides a technical solution:

[0056] like Figures 9 to 14 As shown, it should be noted that the interior of the multi-stage telescopic rod 220 is hollow, so that the push rod 228 can follow the contraction of the multi-stage telescopic rod 220 and push the connecting ring 221 located inside the coil spring box 206 during the contraction process, so that the connecting ring 221 drives the coil spring box 206 to move axially inside the accommodating shell 209;

[0057] The surface of the wire block 224 is provided with a wire groove matching the surface of the screw rod 203, so that the wire block 224 can slide along the thread on the surface of the screw rod 203;

[0058] Fig.11 In the figure, the dotted line portion represents the push rod 228 located inside the multi-stage telescopic rod 220.

[0059] Working principle: In this embodiment, the length of the sleeve 201 is adaptively shortened. In terms of connection, the winding shaft is fixedly connected to the coil spring 210 inside the coil spring box 206 through a connecting ring 221 located in the accommodating shell 209. The connecting ring 221 near the water valve 103 is fixed to the sleeve 201 along the axis perpendicular to the connecting ring 221 through a multi-stage telescopic rod 229.

[0060] In this embodiment, when the hose 213 is pulled out of the concealed box 101, the two connecting rings 221 rotate under the friction between the hose 213 and the multi-stage telescopic rod 220. During the rotation of the connecting rings 221, one of the connecting rings 221 drives the sleeve 201 to rotate with it through the multi-stage telescopic rod 229, and the other connecting ring 221 moves toward the direction close to the accommodating shell 209 under the action of the wire block 224 at the end of the spring rod 223. During this process, after the hose 213 is separated from the surface of the multi-stage telescopic rod 220, the separation block 227 is fixed to the inside of the connecting ring 221 through the extension block 226 and the opening of the separation block 227 is directed toward the convex portion 225. The spring rod 223 passes through the convex portion 229. 25 enters the interior of the separation block 227 and moves upward along the inclined surface of the separation block 227. At this time, the wire block 224 is separated from the screw rod 203, that is, the telescopic section is contracted. When the push rod 228 at the other end of the multi-stage telescopic rod 220 is contracted to contact the connecting ring 221 inside the accommodating shell 209, the wire block 224 that continues to slide on the surface of the screw rod 203 will cause the push rod 228 to push the coil spring box 206 equipped with the connecting ring 221 into the accommodating shell 209 until the limiter is triggered. The benefit of this solution is that the movement of the coil spring box 206 inside the accommodating shell 209 can be reduced, thereby reducing the space of the accommodating shell 209, and further reducing the size of the concealed box 101, making the concealed box 101 easier to install;

[0061] The function of the magnetic block is that the multi-stage telescopic rod 220 in the contracted state contracts under the action of the wire block 224 on the surface of the screw rod 203. During the contraction process, the spring rod 223 is scooped up by the separation block 227 through the convex portion 225 on the surface of the spring rod 223, so that the corresponding wire block 224 is separated from the screw rod 203, and the multi-stage telescopic rod 220 corresponding to the spring rod 223 overcomes the repulsion between adjacent magnetic blocks and contracts with each other. During the extension process, the wire block 224 leaving the surface of the screw rod 203 will gradually approach the surface of the screw rod. In order to prevent the influence of the friction between each telescopic section of the multi-stage telescopic rod 220, the repulsion between adjacent magnetic blocks will keep a suitable distance between adjacent telescopic sections, that is, during the extension process of the multi-stage telescopic rod 220, the constraint block 222 on the surface of the multi-stage telescopic rod 220 is arranged along the threaded arrangement to follow the extension of the multi-stage telescopic rod 220, so that the hose 213 is neatly rolled on the winding shaft.

[0062] Embodiment 3, on the basis of embodiment 1 or embodiment 2, the hose 213 is connected to the water outlet hole 1 of the sleeve 201 through a guide tube 217, and the guide tube 217 is L-shaped, so that the hose 213 is not easy to bend at a large angle at the water outlet, thereby ensuring the water outlet effect, and at the same time keeping the line out and line retracting angles of the hose 213 close to the central axis of the line outlet hole during the retraction process, so that the line out and line retracting are smoother.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A concealed installation pulling device for a faucet hose, comprising a concealed installation box (101), a water valve (103) installed inside the concealed installation box (101), and a spray head (102) installed on the surface of the concealed installation box (101); Features: It also includes a winding shaft arranged inside the concealed box (101) and a hose (213) wound on the surface of the winding shaft. The water outlet of the water valve (103) is rotatably connected to the sleeve (201) through a rotating sealing ring. The hose (213) is fixedly connected to a water outlet hole (213) opened on the surface of the sleeve (201). A screw rod (203) is arranged inside the sleeve (201). The end of the screw rod (203) is fixedly connected to the surface of the water valve (103). When the hose (213) follows the nozzle (102) to be pulled, one end of the winding shaft moves along the central axis of the screw rod (203) into a containing shell (209) fixed on one side of the concealed box (101) to maintain the outlet angle of the hose (213) when it is pulled out of the concealed box (101). The housing (209) is provided with a coil spring box (206), a coil spring (210) and a limiter, wherein the limiter comprises a limiter block (234) and an adjustment slot. After the nozzle (102) is stretched to a set position, it is locked by the limiter block (234) and the adjustment slot and unlocked in cooperation with the coil spring (210). The concealed box (101) is provided with a graded positioning member, wherein the graded positioning member comprises a button (1), a friction plate (246) and a friction cam (249). When in use, the friction force between the friction plate (246) and the friction cam (249) causes the hose (213) to be locked once each time it is stretched to a set length. When the button (210) is pressed, the friction plate (246) and the friction cam (249) are not in contact, and the hose (213) contracts under the action of the coil spring (210). The wire winding shaft comprises a wire winding post 1 (202) slidably connected to the surface of the sleeve 1 (201); the surface of the screw rod 1 (203) is threadedly connected to a thread block 1 (204); the surface of the wire winding post 1 (202) is provided with a threaded constraint groove (218); the wire winding post 1 (202) is fixedly connected to the thread block 1 (204); one end of the screw rod 1 (203) away from the water valve (103) is located inside the accommodating shell (209); the wire winding post 1 (202) is rotatably connected to the coil spring box 1 (206); one end of the coil spring 1 (210) is fixedly connected to the coil spring box 1 (206); and the other end of the coil spring 1 (210) is fixedly connected to the wire winding post 1 (202); The wire winding shaft comprises two connecting rings (221) arranged outside the screw rod (203), a multi-stage telescopic rod (220) arranged in a ring array around the screw rod (203), and a restraining block (222) respectively fixedly connected to the surface of each telescopic joint of the multi-stage telescopic rod (220), the connecting ring (221) close to the water valve (103) is fixedly connected to the multi-stage telescopic rod (229), the other end of the multi-stage telescopic rod (229) is fixedly connected to the sleeve (201), the restraining block (222) is arranged in a spiral shape along the axial direction of the screw rod (203), the multi-stage telescopic rod (220) is fixedly connected to the two connecting rings (221), one of the connecting rings (221) is rotatably connected to the coil spring box (206), and the coil spring (206) is fixedly connected to the coil spring box (206). One end of the coil spring box (210) is fixedly connected to the coil spring box (206), and the other end of the coil spring (210) is fixedly connected to the corresponding connecting ring (221). The surface of each telescopic section of the multi-stage telescopic rod (220) is respectively fixedly connected to a spring rod (223). The surface of the telescopic portion of the spring rod (223) is provided with a convex portion (225). The end of the spring rod (223) is fixedly connected to a screw block (224). The screw block (224) is slidably connected to the screw rod (203) through a thread on the surface of the screw rod (203). A separation block (227) is fixedly connected in an annular array inside the connecting ring (221) located inside the coil spring box (206). A push rod (228) is fixedly connected inside the telescopic section of the multi-stage telescopic rod (220) close to the water valve (103).

2. The concealed pull-out device for a faucet hose according to claim 1, characterized in that: A magnetic block is arranged between two adjacent telescopic sections of the multi-stage telescopic rod 1 (220), and the two adjacent magnetic blocks are arranged to be mutually exclusive.

3. The concealed pull-out device for a faucet hose according to claim 2, characterized in that: A guide tube (217) is provided between the sleeve one (201) and the hose one (213), one end of the guide tube (217) is fixedly connected to a water outlet hole one opened on the surface of the sleeve one (201), and the hose one (213) is fixedly connected to the other end of the guide tube (217).

4. The concealed pull-out device for a faucet hose according to claim 3, characterized in that: The limiting member further comprises a U-shaped block (230) fixedly connected to the surface of the accommodating shell (209); a positioning hole (231) is provided directly below the U-shaped block (230); a shifting hole (232) is provided on the surface of the accommodating shell (209); two ends of the limiting block (234) are respectively inserted into the positioning hole (231) and the shifting hole (232); an adjustment groove is provided on the surface of the accommodating shell (209); a compression spring (233) is provided on the surface of the U-shaped block (230); and one end of the compression spring (233) is fixedly connected to the U-shaped block (230).

5. The concealed pull-out device for a faucet hose according to claim 4, characterized in that: The adjustment slot comprises a trapezoidal slot entrance (235), a heart-shaped adjustment opening (237), a heart-shaped block (236) located in the adjustment opening (237), and an adjustment step 1 (238) and an adjustment step 2 (239) disposed in the adjustment opening (237).

6. The concealed pull-out device for a faucet hose according to claim 5, characterized in that: The graded positioning member further comprises a connecting rod 1 (245) arranged inside the button 1, the friction plate 1 (246) is rotatably connected to the inside of the concealed box (101), an end of the connecting rod 1 (245) away from the button 1 is hinged to the friction plate 1 (246), the friction cam (249) is rotatably arranged inside the concealed box (101), and the friction cam (249) is located between the hose 1 (213) and the friction plate 1 (246).

7. The concealed pull-out device for a faucet hose according to claim 6, characterized in that: The button 1 comprises a sliding sleeve (241) fixedly connected to a through circular groove 1 provided on the surface of the concealed box (101), two sliding rings (242) slidably connected to the sliding sleeve (241), and a spring 1 (243) arranged between the two sliding rings (242); the two ends of the spring 1 (243) are respectively fixedly connected to the two sliding rings (242); a pressing button (244) is slidably connected to the interior of the sliding sleeve (241); the bottom surface of the pressing button (244) is rotatably connected to a rotating block (248) via a bearing 1; the connecting rod 1 (245) is hinged to the bottom surface of the rotating block (248); a wire groove 1 (253) is provided on the surface of the pressing button (244); a convex block 1 (254) is fixedly connected to the interior of the sliding sleeve (241); the convex block 1 (254) is slidably connected to the wire groove 1 (253) provided on the surface of the pressing button (244).

8. The concealed pull-out device for a faucet hose according to claim 7, characterized in that: A round rod (252) is fixedly connected in a round hole one formed on the surface of the friction cam (249), and spring rods (251) are rotatably connected at both ends of the round rod (252), and the spring rods (251) are fixedly connected to the inner wall of the concealed box (101).

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