Adjustable multi-stage sealed bathtub drainer and mounting method thereof

Abstract

The invention provides an adjustable multi-stage sealed bathtub drainer and an installation method thereof.The adjustable multi-stage sealed bathtub drainer comprises an overflow assembly arranged at an overflow port of a bathtub and a drainage assembly arranged at a drainage port of the bathtub, and the drainage assembly comprises a drainage body arranged on the inner side of the drainage port of the bathtub and a drainage bowl arranged on the outer side of the drainage port of the bathtub; the drainage bowl is adjustably installed on the drainage body through a fixing bolt so as to adapt to different bathtub wall thicknesses, and the drainage body is locked and installed in a bathtub. The sealing structures are arranged between the water sealing umbrella and the water draining bowl, between the water draining bowl and the bathtub and between the water draining body and the bathtub, and the multi-stage sealing structure and layer-by-layer sealing are achieved, so that the situation of water leakage caused by water pressure change of a single sealing structure is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of bathtub accessories, and in particular to an adjustable multi-stage sealing bathtub drainer and an installation method thereof. Background Art

[0002] Prior art bathtubs have integrated overflow and drain assemblies, allowing users to control the opening and closing of the drain assembly by operating the overflow assembly located on the side of the bathtub. However, due to the varying wall thicknesses of different bathtubs, each requires a custom-designed drain structure, which is not only costly but also requires users to replace the drain assembly if it fails. This can be wasteful if the wrong one is purchased. Furthermore, existing bathtubs rely on the overflow assembly to control the drain assembly, which can become ineffective over time due to its long travel. Existing drain structures are fixed and cannot be adjusted. Therefore, if they fail, they will not function properly and must be discarded, resulting in significant waste.

[0003] In view of this, the inventors of this case conducted in-depth research on the above-mentioned issues, which led to the creation of this case. Summary of the invention

[0004] One purpose of the present invention is to address the above shortcomings and provide an adjustable multi-stage sealed bathtub drain that can adapt to bathtubs of different thicknesses and can effectively ensure that the drainage and water-stopping functions of the drain structure are stable and not prone to failure.

[0005] The solution adopted by the present invention to solve the technical problem is: an adjustable multi-stage sealed bathtub drain, including an overflow assembly provided at the bathtub overflow outlet and a drain assembly provided at the bathtub drain outlet, the drain assembly including a drain body provided inside the bathtub drain outlet and a drain bowl provided outside the bathtub drain outlet, the drain bowl being adjustably mounted on the drain body by fixing bolts to adapt to different bathtub wall thicknesses, and the drain body being locked and mounted in the bathtub;

[0006] The drain assembly further includes a water-sealing umbrella and a swinging member for blocking the drain outlet. The water-sealing umbrella is movably mounted on the drain bowl, and the swinging member is rotatably mounted in the drain body. One end of the swinging member is located below the water-sealing umbrella, and the other end of the swinging member is connected to the overflow assembly through a traction line, so that the swinging member is driven by the overflow assembly to rotate and lift the water-sealing umbrella to open the drain outlet.

[0007] The bottom of the water-sealing umbrella is provided with an adjusting screw for contacting with the swing member. The adjusting screw is threadedly mounted on the water-sealing umbrella so as to adjust the contact stroke between the swing member and the water-sealing umbrella by rotating the adjusting screw.

[0008] Further, to prevent the adjusting screw from loosening; the water sealing umbrella movably passes through the fixing bolt and is threadedly connected to the adjusting screw. An anti-loosening sleeve for preventing the adjusting screw from loosening is also threadedly installed on the adjusting screw. Serrations for frictionally contacting the fixing bolt to achieve anti-loosening are annularly provided on the outer peripheral surface of the anti-loosening sleeve.

[0009] Further, to improve the sealing performance at the junction of the drain body and the bathtub and prevent water leakage caused by water pressure; an installation flange extending radially outward is provided on the upper side of the drain body. A lower sealing member for sealing contact with the inner side wall of the bathtub is provided on the installation flange. A pressing flange extending radially outward is provided on the upper side of the drain bowl. An upper sealing member for sealing contact with the outer side wall of the bathtub is provided on the lower side of the pressing flange;

[0010] The upper sealing member includes an upper sealing ring for sealing contact with the upper side wall of the bathtub and a reinforcing ring located below the upper sealing ring for reinforcing the upper sealing ring. The upper sealing ring is located on the lower side of the pressing flange, and the reinforcing ring is inclined and arranged on the drain bowl;

[0011] The lower sealing member includes an annular body. A plurality of annular lips protruding upward are provided on the annular body. An inner lip ring and an outer lip ring protruding downward are also provided on the annular body. A limiting ring protruding upward is provided on the outer edge of the installation flange. The inner lip ring is located inside the limiting ring, and the outer lip ring is located outside the limiting ring. The height of the inner lip ring is greater than the height of the limiting ring. The height of the outer lip ring is less than the sum of the heights of the installation flange and the limiting ring. A sealing lip protruding radially inward is also provided at the end of the outer lip ring.

[0012] Further, to install the drain bowl and the swing member on the drain body; the drain body includes a main body. A through hole penetrating the main body up and down is provided on the main body. A fixing seat is provided at the center of the through hole. A plurality of rib strips are provided between the fixing seat and the main body. Drain holes for water flow to pass through are formed between adjacent two rib strips. A threaded hole is provided on the fixing seat. The fixing bolt is threadedly installed in the threaded hole to fixedly install the drain bowl on the installation seat;

[0013] The drain body further includes a side portion extending laterally from the main body. An overflow channel communicating with the through hole is provided inside the side portion. The overflow channel is connected to the bathtub overflow port. The swing member includes a lifting rod, a rotating shaft, and a swing part. The rotating shaft is rotatably installed on the side portion. The lifting rod is arranged in the overflow channel. One end of the lifting rod is connected to the rotating shaft, and the other end of the lifting rod is arranged below the water sealing umbrella. One end of the swing part is connected to the rotating shaft, and the other end of the swing part is connected to a traction wire.

[0014] Further, in order to limit and install the drain bowl in the drain body and install the water sealing umbrella on the drain bowl; the drain bowl includes a bowl body and a mounting seat that are guidingly installed in the drain body, the bowl body is provided with a round hole that penetrates the bowl body up and down, the mounting seat is arranged at the center of the round hole, several rib strips are arranged between the bowl body and the mounting seat, a drain hole is formed between two adjacent rib strips, the mounting seat is provided with a through hole for a fixing bolt to pass through, the fixing bolt includes a bolt head and a threaded column, and the diameter of the bolt head is larger than the diameter of the through hole to limit and install the drain bowl on the drain body;

[0015] An annular step is arranged on the upper side of the inner wall of the drain bowl, the water sealing umbrella includes a water sealing surface located on the annular step and a guiding column extending downward from the water sealing surface, a water stop ring for sealing contact with the annular step is arranged around the water sealing surface, a guiding through hole that penetrates the fixing bolt up and down is arranged in the fixing bolt, and the guiding column is movably inserted into the guiding through hole.

[0016] Further, in order to control the drain assembly; the overflow assembly includes a table control body arranged inside the overflow port of the bathtub and a tightening block arranged outside the overflow port of the bathtub, a double-headed stud is threadedly installed on the table control body, and the tightening block is threadedly installed on the double-headed stud to lock and install the table control body in the bathtub according to the wall thickness of different bathtubs;

[0017] The bathtub drain control mechanism further includes a rack, a gear, a spline shaft and a table control cover. The gear is rotatably installed in the table control body and the gear is located on the left side of the double-headed stud. The rack is slidably installed in the table control body and the rack meshes with the gear. One end of the spline shaft movably passes through the double-headed stud and is coaxially fixedly connected with the gear, and the other end of the spline shaft is coaxially fixedly connected with the table control cover so as to drive the gear to rotate by rotating the table control cover and thus drive the rack to move up and down;

[0018] The traction wire includes an inner tube and an outer tube. The inner tube is movably arranged inside the outer tube. One end of the outer tube is fixedly installed on the table control body, and the other end of the outer tube is fixedly installed on the drain body. One end of the inner tube is fixedly connected with the rack, and the other end of the inner tube is connected with the swing member.

[0019] Further, in order to rotatably install the gear and the spline shaft in the table control body, install the double-headed stud on the table control body, and install the rack and the overflow water pipe on the table control body; the table control body includes a circular seat, an installation hole with an opening facing right and a water passing cavity located on the outer periphery of the installation hole are arranged inside the circular seat. The gear is coaxially rotatably installed in the installation hole. A positioning post protruding to the right is arranged at the bottom of the installation hole. A positioning groove recessed to the right for inserting the positioning post is arranged on the left end face of the spline shaft. An internal thread is also arranged on the right side of the gear in the installation hole, and the double-headed stud is threadedly installed on the internal thread;

[0020] The table control body further includes a first connecting cylinder for installing a pulling wire and a second connecting cylinder for installing an overflow water pipe. The first connecting cylinder is eccentrically arranged on one side of the circular seat, and the second connecting cylinder is eccentrically arranged on the other side of the circular seat and is parallel to the first connecting cylinder. A driving channel communicating with the installation hole is provided in the first connecting cylinder, and the rack is installed in the driving channel. A water passing channel communicating with the water passing cavity is provided in the second connecting cylinder, and the second connecting cylinder is connected to the lower water body through an overflow water pipe.

[0021] Furthermore, in order to ensure the sealing between the table control body and the bathtub and prevent water leakage; an extension flange extends radially outward on the right side of the circular seat, and a rubber ring for sealing contact with the inner wall of the bathtub is provided on the extension flange. A plurality of annular protrusions for sealing contact with the inner wall surface of the bathtub are annularly arranged on the right side surface of the rubber ring, and a labyrinth lip for sealing contact with the extension flange is provided on the left side surface of the rubber ring.

[0022] A limiting protrusion protruding to the right is provided on the outer edge of the extension flange. The labyrinth lip includes an annular inner lip located inside the limiting protrusion and an annular outer lip located outside the limiting protrusion. Both the annular inner lip and the annular outer lip are formed by the rubber ring protruding to the left. The thickness of the annular inner lip is greater than the thickness of the limiting protrusion, and the thickness of the annular outer lip is less than the sum of the thicknesses of the extension flange and the limiting protrusion. A lip protruding radially inward for sealing contact with the outer peripheral surface of the extension flange is further provided at the end of the annular outer lip.

[0023] Furthermore, in order to prevent the gear and rack from being affected by moisture and rust and affecting their functions; an O-ring for sealing contact with the inner wall of the installation hole is sleeved on the double-headed stud, and a sealing sleeve for preventing the water in the water passing cavity from flowing into the installation hole is provided between the spline shaft and the double-headed stud;

[0024] An axial hole for movably installing the spline shaft is provided axially in the double-headed stud. A tapered hole is provided at one end of the axial hole close to the gear. The sealing sleeve includes a cylindrical section and a conical section located at the tapered hole. The axial length of the conical section is greater than the axial length of the tapered hole. An outer sealing ring protruding radially outward for sealing contact with the inner wall of the axial hole is provided on the cylindrical section, and an inner sealing ring protruding radially inward for sealing contact with the spline shaft is also provided on the cylindrical section;

[0025] The cross-section of the outer sealing ring is in the shape of a right triangle, and the cross-section of the inner sealing ring is in the shape of a semicircle. An annular groove for installing the inner sealing ring is provided on the spline shaft corresponding to the inner sealing ring and is radially inwardly recessed.

[0026] Another object of the present invention is to address the above deficiencies and provide an installation method for an adjustable multi-stage sealed bathtub drain that can adapt to bathtubs of different thicknesses and effectively ensure the stability of its functions and resistance to failure.

[0027] The solution adopted by the present invention to solve the technical problems is: an installation method for an adjustable multi-stage sealed bathtub drain, including the following steps:

[0028] (1) Clamp the table control body inside the bathtub overflow port, install the double-headed stud on the table control body, clamp the tightening block outside the bathtub overflow port, and lock and install the tightening block on the double-headed stud according to the thickness of the bathtub to ensure that the rubber ring is tightly attached to the bathtub to maintain sealing;

[0029] (2) Clamp the drain body inside the bathtub drain opening, clamp the drain bowl outside the bathtub drain opening, and lock and install the drain bowl on the drain body through the fixing bolts according to the thickness of the bathtub to ensure that the upper seal and the lower seal are tightly attached to the bathtub to maintain sealing;

[0030] (3) Under the water stop state, rotate and adjust the adjusting screw to ensure that the lifting rod does not lift the water sealing umbrella, the lower side of the water sealing umbrella is tightly attached to the annular step, and the water sealing umbrella is sealed with the drain bowl.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] (1) By setting a sealing structure between the water sealing umbrella and the drain bowl, between the drain bowl and the bathtub, and between the drain body and the bathtub, a multi-stage sealing structure, layer-by-layer sealing, the present invention avoids the occurrence of water leakage caused by a single sealing structure due to changes in water pressure;

[0033] (2) The present invention sets the drain body inside the bathtub and the drain bowl outside the bathtub, and then installs the drain bowl on the drain body through the fixing bolts, so as to lock and install the drain body and the drain bowl inside the bathtub. Here, the fixing bolts and the drain body adopt a threaded connection structure to adjust the installation height of the drain bowl according to the wall thickness of the bathtub, with a wide range of applications;

[0034] (3) By setting an adjusting screw on the water sealing umbrella, when the swing member becomes loose, the abutting stroke between the swing member and the water sealing umbrella can be adjusted by rotating the adjusting screw to ensure that the swing member normally lifts the water sealing umbrella, thus effectively controlling the opening and closing of the drain opening, with stable functions and a long service life;

[0035] (4) The present invention sets the table control body inside the bathtub and the tightening block outside the bathtub. By setting a double-headed stud on the table control body and threadedly installing the tightening block on the double-headed stud, the table control body and the tightening block are locked and installed on the bathtub. The threaded connection structure can ensure that the control mechanism adapts to bathtubs of different thicknesses, thus expanding the scope of application;

[0036] (5) The table-controlled cap of the present invention is arranged outside the bathtub and is coaxially and fixedly connected to the gear through a spline shaft, so as to control the opening and closing of the bathtub drain outlet through the external table-controlled cap, thus avoiding the need to put hands into the bathtub when the bathtub is draining water, which brings convenience to users. In addition, the setting of the sealing ring and the sealing sleeve can effectively prevent water from flowing into the installation hole and causing the gear and rack to get damp and rusty, thus effectively ensuring the normal operation of the gear and rack and the normal realization of the function of the control mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention will be further described below with reference to the accompanying drawings in conjunction with embodiments:

[0038] Figure 1 is a structural schematic diagram of the present invention;

[0039] Figure 2 is a structural schematic diagram of the drain assembly;

[0040] Figure 3 is a structural sectional view of the drain assembly;

[0041] Figure 4 is a partial structural diagram of the drain assembly;

[0042] Figure 5 is a structural schematic diagram of the drain body;

[0043] Figure 6 is a structural schematic diagram of the drain bowl;

[0044] Figure 7 is a structural schematic diagram of the upper seal and the lower seal;

[0045] Figure 8 is a structural schematic diagram of the fixing bolt;

[0046] Figure 9 is a structural schematic diagram of the overflow assembly;

[0047] Figure 10 is a structural sectional view of the overflow assembly;

[0048] Figure 11 is a partial structural diagram of the overflow assembly;

[0049] Figure 12 is a structural schematic diagram of the table-controlled body;

[0050] Figure 13 is a structural schematic diagram of the sealing sleeve;

[0051] Figure 14 is a structural schematic diagram of the gear and rack.

[0052] In the figure: drain assembly 1; drain body 11; main body 111; mounting flange 112; limiting ring 113; fixing seat 114; drain hole 115; side part 116; overflow channel 117; drain bowl 12; bowl body 121; pressing flange 122; mounting seat 123; drain hole 124; annular step 125; fixing bolt 13; water sealing umbrella 14; swinging part 15; lifting rod 151; rotating shaft 152; swinging part 153; lower sealing part 16; annular body 161; annular lip 162; inner lip ring 163; outer lip ring 164; sealing lip 165; upper sealing part 17; upper sealing ring 171; reinforcing ring 172; adjusting screw 18; locknut 19;

[0053] Overflow assembly 2; table control body 21; circular seat 211; mounting hole 2111; water passing cavity 2112; positioning post 2113; first connecting cylinder 212; second connecting cylinder 213; extending flange 214; limiting projection 215; tightening block 22; stud 23; rack 24; gear 25; spline shaft 26; table control cover 27; sealing sleeve 28; cylindrical section 281; inner sealing ring 2811; outer sealing ring 2812; conical section 282; rubber ring 29;

[0054] Overflow water pipe 3; towing wire 4. Specific embodiments

[0055] The content of the present invention will be described in detail below with reference to the accompanying drawings of the specification and specific embodiments:

[0056] Embodiment 1:

[0057] As Figure 1-14 shown, this embodiment provides an adjustable multi-stage sealed bathtub drainer, including an overflow assembly 2 provided at the overflow port of the bathtub and a drain assembly 1 provided at the drain port of the bathtub. The drain assembly 1 includes a drain body 11 provided inside the drain port of the bathtub and a drain bowl 12 provided outside the drain port of the bathtub. The drain bowl 12 is adjustably mounted on the drain body 11 through fixing bolts 13 to adapt to different bathtub wall thicknesses and lock and install the drain body 11 in the bathtub;

[0058] The drain assembly 1 further includes a water sealing umbrella 14 and a swinging part 15 for blocking the drain port. The water sealing umbrella 14 is movably mounted on the drain bowl 12, and the swinging part 15 is rotatably mounted inside the drain body 11. One end of the swinging part 15 is provided below the water sealing umbrella 14, and the other end of the swinging part 15 is connected to the overflow assembly 2 through a towing wire 4 to drive the swinging part 15 to rotate and lift the water sealing umbrella 14 to open the drain port through the overflow assembly 2;

[0059] The bottom of the water sealing umbrella 14 is provided with an adjusting screw 18 for abutting and contacting with the swinging member 15. The adjusting screw 18 is threadedly installed on the water sealing umbrella 14 to adjust the abutting stroke between the swinging member 15 and the water sealing umbrella 14 by rotating the adjusting screw 18.

[0060] In this embodiment, in order to prevent the adjusting screw 18 from loosening; the water sealing umbrella 14 movably passes through the fixing bolt 13 and is threadedly connected to the adjusting screw 18. A locknut 19 for preventing the adjusting screw 18 from loosening is also threadedly installed on the adjusting screw 18 and is located below the water sealing umbrella 14. Serrations for frictionally contacting with the fixing bolt 13 to achieve anti-loosening are annularly provided on the outer peripheral surface of the locknut 19.

[0061] In this embodiment, in order to improve the sealing performance at the junction of the drain body 11 and the bathtub and prevent water leakage caused by water pressure; an installation flange 112 extending radially outward is provided on the upper side of the drain body 11. A lower seal 16 for sealingly contacting the inner side wall of the bathtub is provided on the installation flange 112. A pressing flange 122 extending radially outward is provided on the upper side of the drain bowl 12. An upper seal 17 for sealingly contacting the outer side wall of the bathtub is provided on the lower side of the pressing flange 122;

[0062] The upper seal 17 includes an upper sealing ring 171 for sealingly contacting the upper side wall of the bathtub and a reinforcing ring 172 located below the upper sealing ring 171 for reinforcing the upper sealing ring 171. The upper sealing ring 171 is located below the pressing flange 122. The reinforcing ring 172 is inclined and arranged on the drain bowl 12;

[0063] The lower seal 16 includes an annular body 161. A plurality of upwardly protruding annular lips 162 are provided on the annular body 161. An inner lip ring 163 and an outer lip ring 164 protruding downward are also provided on the annular body 161. A limiting ring 113 protruding upward is provided on the outer edge of the installation flange 112. The inner lip ring 163 is located inside the limiting ring 113. The outer lip ring 164 is located outside the limiting ring 113. The height of the inner lip ring 163 is greater than the height of the limiting ring 113. The height of the outer lip ring 164 is less than the sum of the heights of the installation flange 112 and the limiting ring 113. A sealing lip 165 protruding radially inward is also provided at the end of the outer lip ring 164.

[0064] In this embodiment, in order to install the drain bowl 12 and the swing member 15 on the drain body 11; the drain body 11 includes a main body 111, a through hole penetrating the main body 111 up and down is provided on the main body 111, a fixing seat 114 is provided at the center of the through hole, and several ribs are provided between the fixing seat 114 and the main body 111. A drain hole 115 for water flow to pass through is formed between two adjacent ribs. A threaded hole is provided on the fixing seat 114, and the fixing bolt 13 is threadedly installed in the threaded hole to fixedly install the drain bowl 12 on the mounting seat 123;

[0065] The drain body 11 further includes a side portion 116 extending laterally from the main body 111. An overflow channel 117 communicating with the through hole is provided in the side portion 116. The overflow channel 117 is connected to the bathtub overflow port. The swing member 15 includes a lifting rod 151, a rotating shaft 152 and a swing rod 153. The rotating shaft 152 is rotatably installed on the side portion 116. The lifting rod 151 is arranged in the overflow channel 117. One end of the lifting rod 151 is connected to the rotating shaft 152, and the other end of the lifting rod 151 is arranged below the water sealing umbrella 14. One end of the swing rod 153 is connected to the rotating shaft 152, and the other end of the swing rod 153 is connected to the traction wire 4. A swing rod box for installing the swing rod 153 is provided on the side portion 116.

[0066] In this embodiment, in order to limit and install the drain bowl 12 in the drain body 11 and install the water sealing umbrella 14 on the drain bowl 12; the drain bowl 12 includes a bowl body 121 and a mounting seat 123 that are guidingly installed in the drain body 11. A round hole penetrating the bowl body 121 up and down is provided on the bowl body 121. The mounting seat 123 is arranged at the center of the round hole. Several rib strips are provided between the bowl body 121 and the mounting seat 123. A drain hole 124 is formed between two adjacent rib strips. A perforation for the fixing bolt 13 to pass through is provided on the mounting seat 123. The fixing bolt 13 includes a bolt head and a threaded column. The diameter of the bolt head is larger than the diameter of the perforation to limit and install the drain bowl 12 on the drain body 11;

[0067] An annular step 125 is provided on the upper side of the inner wall of the drain bowl 12. The water sealing umbrella 14 includes a water sealing surface located on the annular step 125 and a guiding column extending downward from the water sealing surface. A water stop ring for making a sealing contact with the annular step 125 is provided on the water sealing surface. A guiding through hole penetrating the fixing bolt 13 up and down is provided in the fixing bolt 13. The guiding column movably penetrates through the guiding through hole.

[0068] In this embodiment, in order to control the drain assembly 1; the overflow assembly 2 includes a table control body 21 provided inside the overflow opening of the bathtub and a tightening block 22 provided outside the overflow opening of the bathtub. A double-headed stud 23 is threadedly installed on the table control body 21, and the tightening block 22 is threadedly installed on the double-headed stud 23 to lock and install the table control body 21 in the bathtub according to the wall thickness of different bathtubs;

[0069] The tightening block 22 includes an annular seat, a connecting seat provided at the center of the annular seat, and a plurality of brackets radially connecting the annular seat and the connecting seat. An overflow hole for water flow to pass through is formed between adjacent two brackets, and a threaded hole for threaded connection with the double-headed stud 23 is provided on the connecting seat;

[0070] The bathtub drain control mechanism further includes a rack 24, a gear 25, a spline shaft 26 and a table control cap 27. The gear 25 is rotatably installed inside the table control body 21 and the gear 25 is located on the left side of the double-headed stud 23. The rack 24 is movably installed up and down inside the table control body 21 and the rack 24 meshes with the gear 25. One end of the spline shaft 26 passes through the double-headed stud 23 movably and is coaxially fixedly connected with the gear 25. The other end of the spline shaft 26 is coaxially fixedly connected with the table control cap 27 so as to drive the gear 25 to rotate by rotating the table control cap 27 and thus drive the rack 24 to move up and down;

[0071] The table control cap 27 includes a cover body and a hole seat extending leftward from the cover body. An insertion hole for inserting the spline shaft 26 is provided on the hole seat, and the spline shaft 26 is fixedly installed in the insertion hole by a set screw;

[0072] The traction wire 4 includes an inner tube and an outer tube. The inner tube is movably arranged inside the outer tube. One end of the outer tube is fixedly installed on the table control body 21, and the other end of the outer tube is fixedly installed on the drain body 11. One end of the inner tube is fixedly connected with the rack 24, and the other end of the inner tube is connected with the swing member 15.

[0073] In this embodiment, in order to rotatably install the gear 25 and the spline shaft 26 inside the table control body 21, install the double-headed stud 23 on the table control body 21, and install the rack 24 and the overflow water pipe on the table control body 21; the table control body 21 includes a circular seat 211. An installation hole 2111 with an opening facing right and a water passing cavity 2112 located on the outer periphery of the installation hole 2111 are provided inside the circular seat 211. The gear 25 is coaxially rotatably installed in the installation hole 2111. A positioning post 2113 protruding rightward is provided at the bottom of the installation hole 2111. A positioning groove for inserting the positioning post 2113 is provided by recessing rightward on the left end face of the spline shaft 26. An internal thread is further provided in the installation hole 2111 on the right side of the gear 25, and the double-headed stud 23 is threadedly installed on the internal thread;

[0074] The table control body 21 further includes a first connecting cylinder 212 for installing a pulling wire and a second connecting cylinder 213 for installing an overflow water pipe. The first connecting cylinder 212 is eccentrically arranged on one side of the circular seat 211, and the second connecting cylinder 213 is eccentrically arranged on the other side of the circular seat 211 and is parallel to the first connecting cylinder 212. A driving channel communicating with the mounting hole 2111 is provided in the first connecting cylinder 212, and the rack 24 is installed in the driving channel. A water passing channel communicating with the water passing cavity 2112 is provided in the second connecting cylinder 213, and the second connecting cylinder 213 is connected to the lower water body 11 through an overflow water pipe.

[0075] In this embodiment, in order to ensure the sealing between the table control body 21 and the bathtub and prevent water leakage; an extension flange 214 extends radially outward on the right side of the circular seat 211, and a rubber ring 29 for sealing contact with the inner wall of the bathtub is provided on the extension flange 214. A plurality of annular protrusions for sealing contact with the inner wall surface of the bathtub are annularly arranged on the right side surface of the rubber ring 29, and a labyrinth lip for sealing contact with the extension flange 214 is provided on the left side surface of the rubber ring 29.

[0076] A limit protrusion 215 protruding to the right is provided on the outer edge of the extension flange 214. The labyrinth lip includes an annular inner lip located inside the limit protrusion 215 and an annular outer lip located outside the limit protrusion 215. Both the annular inner lip and the annular outer lip are formed by the rubber ring 29 protruding to the left. The thickness of the annular inner lip is greater than the thickness of the limit protrusion 215, and the thickness of the annular outer lip is less than the sum of the thicknesses of the extension flange 214 and the limit protrusion 215. A lip protruding radially inward for sealing contact with the outer peripheral surface of the extension flange 214 is further provided at the end of the annular outer lip.

[0077] In this embodiment, in order to prevent the gear 25 and the rack 24 from being affected by moisture and rust and affecting their functions; an O-ring for sealing contact with the inner wall of the mounting hole 2111 is sleeved on the double-headed stud 23, and a sealing sleeve 28 for preventing the water in the water passing cavity 2112 from flowing into the mounting hole 2111 is provided between the spline shaft 26 and the double-headed stud 23;

[0078] An axial hole for movably installing the spline shaft 26 is axially provided in the double-headed stud 23. A tapered hole is provided at one end of the axial hole close to the gear 25. The sealing sleeve 28 includes a cylindrical section 281 and a conical section 282 located at the tapered hole. The axial length of the conical section 282 is greater than the axial length of the tapered hole. An outer sealing ring 2812 protruding radially outward for sealing contact with the inner wall of the axial hole is provided on the cylindrical section 281, and an inner sealing ring 2811 protruding radially inward for sealing contact with the spline shaft 26 is further provided on the cylindrical section 281;

[0079] The cross-section of the outer sealing ring 2812 is a right triangle, and the cross-section of the inner sealing ring 2811 is a semi-circle. A ring groove that radially indents inward for installing the inner sealing ring 2811 is provided on the spline shaft 26 corresponding to the inner sealing ring 2811.

[0080] Embodiment 2:

[0081] This embodiment provides an installation method for an adjustable multi-stage sealed bathtub drainer, including the following steps:

[0082] (1) Clamp the table control body 21 inside the bathtub overflow opening, install the stud 23 on the table control body 21, clamp the tightening block 22 outside the bathtub overflow opening, and lock and install the tightening block 22 on the stud 23 according to the thickness of the bathtub to ensure that the rubber ring 29 is tightly attached to the bathtub to maintain sealing.

[0083] (2) Clamp the drain body 11 inside the bathtub drain opening, clamp the drain bowl 12 outside the bathtub drain opening, and lock and install the drain bowl 12 on the drain body 11 through the fixing bolt 13 according to the thickness of the bathtub to ensure that the upper seal 17 and the lower seal 16 are tightly attached to the bathtub to maintain sealing.

[0084] (3) Under the water stop state, rotate and adjust the adjusting screw 18 to ensure that the lifting rod 151 does not lift the water sealing umbrella 14, the lower side of the water sealing umbrella 14 is tightly attached to the annular step 125, and the water sealing umbrella 14 is kept sealed with the drain bowl 12.

[0085] The present invention sets a sealing structure between the water sealing umbrella 14 and the drain bowl 12, between the drain bowl 12 and the bathtub, and between the drain body 11 and the bathtub. The multi-stage sealing structure provides layer-by-layer sealing, avoiding water leakage caused by a single sealing structure due to water pressure changes.

[0086] The present invention sets the drain body 11 inside the bathtub and the drain bowl 12 outside the bathtub, and then installs the drain bowl 12 on the drain body 11 through the fixing bolt 13, thereby locking and installing the drain body 11 and the drain bowl 12 inside the bathtub. Here, the fixing bolt 13 and the drain body 11 adopt a threaded connection structure to adjust the installation height of the drain bowl 12 according to the wall thickness of the bathtub, with a wide range of applications.

[0087] The present invention sets the adjusting screw 18 on the water sealing umbrella 14. When the swing member 15 becomes loose, the abutting stroke between the swing member 15 and the water sealing umbrella 14 can be adjusted by rotating the adjusting screw 18 to ensure that the swing member 15 normally lifts the water sealing umbrella 14, thereby effectively controlling the opening and closing of the drain opening, with stable functions and a long service life.

[0088] In the present invention, the table control body 21 is arranged inside the bathtub, and the tightening block 22 is arranged outside the bathtub. By providing a double-headed stud 23 on the table control body 21, the tightening block 22 is threadedly installed on the double-headed stud 23, so that the table control body 21 and the tightening block 22 are locked and installed on the bathtub. The threaded connection structure can ensure that the control mechanism adapts to bathtubs of different thicknesses, thereby expanding the scope of application.

[0089] In the present invention, the table control rotary cover 27 is arranged outside the bathtub and is coaxially and fixedly connected to the gear 25 through a spline shaft 26, so as to control the opening and closing of the bathtub drain outlet through the externally arranged table control rotary cover 27, thus avoiding the need to put the hand into the bathtub when the bathtub is draining water, which brings convenience to the user. In addition, the setting of the sealing ring and the sealing sleeve 28 can effectively prevent water from flowing into the mounting hole 2111 to make the gear 25 and the rack 24 damp and rusty, thereby effectively ensuring the normal operation of the gear 25 and the rack 24 and the normal realization of the functions of the control mechanism.

[0090] The above are only the embodiments of the present invention, and do not limit the patent protection scope of the invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be included in the patent protection scope of the present invention by the same token.

Claims

1. An adjustable multi-stage sealed bathtub drainer, characterized in that: It includes an overflow component provided at the overflow opening of the bathtub and a drain component provided at the drain opening of the bathtub. The drain component includes a drain body provided inside the drain opening of the bathtub and a drain bowl provided outside the drain opening of the bathtub. The drain bowl is adjustably installed on the drain body through fixing bolts to lock and install the drain body in the bathtub by adapting to different bathtub wall thicknesses. The drain component further includes a water sealing umbrella for blocking the drain opening and a swing member. The water sealing umbrella is movably installed on the drain bowl, and the swing member is rotatably installed inside the drain body. One end of the swing member is provided below the water sealing umbrella, and the other end of the swing member is connected to the overflow component through a traction wire to drive the swing member to rotate and lift the water sealing umbrella to open the drain opening through the overflow component. An adjusting screw for abutting and contacting the swing member is provided at the bottom of the water sealing umbrella. The adjusting screw is threadedly installed on the water sealing umbrella to adjust the abutting stroke between the swing member and the water sealing umbrella by rotating the adjusting screw.

2. The adjustable multi-stage sealed bathtub drainer according to claim 1, wherein: The water sealing umbrella movably passes through the fixing bolt and is threadedly connected to the adjusting screw. A locknut for preventing the adjusting screw from loosening is also threadedly installed on the adjusting screw and is located below the water sealing umbrella. Serrations for frictionally contacting the fixing bolt to achieve anti-loosening are annularly provided on the outer peripheral surface of the locknut.

3. The adjustable multi-stage sealed bathtub drainer according to claim 1, characterized in that: An installation flange extending radially outward is provided on the upper side of the drain body. A lower sealing member for sealing contact with the inner sidewall of the bathtub is provided on the installation flange. A pressing flange extending radially outward is provided on the upper side of the drain bowl. An upper sealing member for sealing contact with the outer sidewall of the bathtub is provided on the lower side of the pressing flange. The upper sealing member includes an upper sealing ring for sealing contact with the upper sidewall of the bathtub and a reinforcing ring located below the upper sealing ring for reinforcing the upper sealing ring. The upper sealing ring is located below the pressing flange, and the reinforcing ring is inclined and provided on the drain bowl. The lower sealing member includes an annular body. A plurality of upwardly protruding annular lips are provided on the annular body. An inner lip ring and an outer lip ring protruding downward are also provided on the annular body. A limiting ring protruding upward is provided on the outer edge of the installation flange. The inner lip ring is located inside the limiting ring, and the outer lip ring is located outside the limiting ring. The height of the inner lip ring is greater than the height of the limiting ring, and the height of the outer lip ring is less than the sum of the heights of the installation flange and the limiting ring. A sealing lip protruding radially inward is further provided at the end of the outer lip ring.

4. The adjustable multi-stage sealed bathtub drainer according to claim 1, wherein: The drain body includes a main body. A through hole penetrating the main body up and down is provided on the main body. A fixing seat is provided at the center of the through hole. A plurality of ribs are provided between the fixing seat and the main body. Drain holes for allowing water flow to pass through are formed between adjacent two ribs. A threaded hole is provided on the fixing seat, and the fixing bolt is threadedly installed in the threaded hole to fixedly install the drain bowl on the mounting seat. The drain body further includes a side portion extending laterally from the main body. An overflow channel communicating with the through hole is provided in the side portion. The overflow channel is connected to the bathtub overflow opening. The swing member includes a lifting rod, a rotating shaft and a swing piece. The rotating shaft is rotatably installed on the side portion. The lifting rod is arranged in the overflow channel. One end of the lifting rod is connected to the rotating shaft, and the other end of the lifting rod is arranged below the water sealing umbrella. One end of the swing piece is connected to the rotating shaft, and the other end of the swing piece is connected to the traction wire.

5. The adjustable multi-stage sealed bathtub drainer according to claim 1, wherein: The drain bowl includes a bowl body and a mounting seat that are guidingly installed in the drain body. A circular hole penetrating the bowl body up and down is provided on the bowl body. The mounting seat is arranged at the center of the circular hole. A plurality of ribs are provided between the bowl body and the mounting seat. Drain holes are formed between adjacent ribs. A through hole for a fixing bolt to pass through is provided on the mounting seat. The fixing bolt includes a bolt head and a threaded column. The diameter of the bolt head is larger than the diameter of the through hole to limit and install the drain bowl on the drain body. An annular step is provided on the upper side of the inner wall of the drain bowl. The water sealing umbrella includes a water sealing surface located on the annular step and a guiding column extending downward from the water sealing surface. A water stop ring for sealing contact with the annular step is provided around the water sealing surface. A guiding through hole penetrating the fixing bolt up and down is provided in the fixing bolt. The guiding column is movably inserted into the guiding through hole.

6. The adjustable multi-stage sealed bathtub drainer according to claim 1, characterized in that: The overflow assembly includes a table control body provided inside the bathtub overflow opening and a tightening block provided outside the bathtub overflow opening. A double-headed stud is threadedly installed on the table control body. The tightening block is threadedly installed on the double-headed stud to lock and install the table control body in the bathtub according to different bathtub wall thicknesses. The bathtub drain control mechanism further includes a rack, a gear, a spline shaft and a table control rotary cover. The gear is rotatably installed in the table control body and the gear is located on the left side of the double-headed stud. The rack is movably installed up and down in the table control body and the rack meshes with the gear. One end of the spline shaft movably passes through the double-headed stud and is coaxially fixedly connected to the gear. The other end of the spline shaft is coaxially fixedly connected to the table control rotary cover so as to drive the gear to rotate by rotating the table control rotary cover and thus drive the rack to move up and down. The traction wire includes an inner tube and an outer tube. The inner tube is movably arranged inside the outer tube. One end of the outer tube is fixedly installed on the table control body, and the other end of the outer tube is fixedly installed on the drain body. One end of the inner tube is fixedly connected to the rack, and the other end of the inner tube is connected to the swing member.

7. The adjustable multi-stage sealed bathtub drain according to claim 6, characterized in that: The table control body includes a circular seat. An installation hole with an opening facing right and a water passing cavity located on the outer periphery of the installation hole are provided inside the circular seat. The gear is coaxially rotatably installed in the installation hole. A positioning post protruding to the right is provided at the bottom of the installation hole. A positioning groove recessed to the right for inserting the positioning post is provided on the left end surface of the spline shaft. An internal thread is further provided on the right side of the gear in the installation hole. The double-headed stud is threadedly installed on the internal thread. The table control body further includes a first connecting cylinder for installing a pulling wire and a second connecting cylinder for installing an overflow water pipe. The first connecting cylinder is eccentrically arranged on one side of the circular seat, and the second connecting cylinder is eccentrically arranged on the other side of the circular seat and is parallel to the first connecting cylinder. A driving channel communicating with the mounting hole is provided in the first connecting cylinder, and the rack is installed in the driving channel. A water passing channel communicating with the water passing cavity is provided in the second connecting cylinder, and the second connecting cylinder is connected to the lower water body through an overflow water pipe.

8. The adjustable multi-stage sealed bathtub drainer according to claim 7, wherein: An extension flange extends radially outward on the right side of the circular seat. A rubber ring for making sealing contact with the inner wall of the bathtub is provided on the extension flange. A plurality of annular protrusions for making sealing contact with the inner wall surface of the bathtub are annularly arranged on the right side surface of the rubber ring. A labyrinth lip for making sealing contact with the extension flange is provided on the left side surface of the rubber ring. A limiting protrusion protruding to the right is provided on the outer edge of the extension flange. The labyrinth lip includes an annular inner lip located inside the limiting protrusion and an annular outer lip located outside the limiting protrusion. Both the annular inner lip and the annular outer lip are formed by the rubber ring protruding to the left. The thickness of the annular inner lip is greater than the thickness of the limiting protrusion. The thickness of the annular outer lip is less than the sum of the thicknesses of the extension flange and the limiting protrusion. A lip for making sealing contact with the outer peripheral surface of the extension flange is further provided at the end of the annular outer lip and protrudes radially inward.

9. The adjustable multi-stage sealed bathtub drainer according to claim 7, wherein: An O-ring for making sealing contact with the inner wall of the mounting hole is sleeved on the stud. A sealing sleeve is provided between the spline shaft and the stud to prevent the water in the water passing cavity from flowing into the mounting hole. An axial hole for movably installing the spline shaft is axially provided in the stud. A tapered hole is provided at one end of the axial hole close to the gear. The sealing sleeve includes a cylindrical section and a conical section located at the tapered hole. The axial length of the conical section is greater than the axial length of the tapered hole. An outer sealing ring protruding radially outward for making sealing contact with the inner wall of the axial hole is provided on the cylindrical section. An inner sealing ring protruding radially inward for making sealing contact with the spline shaft is also provided on the cylindrical section. The cross section of the outer sealing ring is in the shape of a right triangle, and the cross section of the inner sealing ring is in the shape of a semicircle. An annular groove for installing the inner sealing ring is provided on the spline shaft corresponding to the inner sealing ring and recesses radially inward.

10. An installation method of an adjustable multi-stage sealed bathtub drainer as described in any one of claims 1-9, characterized in that: It includes the following steps: (1) Clamp the table control body inside the overflow opening of the bathtub, install the stud on the table control body, clamp the tightening block outside the overflow opening of the bathtub, and lock and install the tightening block on the stud according to the thickness of the bathtub to ensure that the rubber ring is tightly attached to the bathtub to maintain sealing. (2) Clamp the lower water body inside the drain opening of the bathtub, clamp the drain bowl outside the drain opening of the bathtub, and lock and install the drain bowl on the lower water body through the fixing bolts according to the thickness of the bathtub to ensure that the upper sealing member and the lower sealing member are tightly attached to the bathtub to maintain sealing. (3) In the water stop state, rotate and adjust the adjusting screw to ensure that the lifting rod does not lift the water sealing umbrella, the lower side surface of the water sealing umbrella is tightly attached to the annular step, and the water sealing umbrella maintains sealing with the drain bowl.

Images