Height-adjustable ceramic flowerpot base

Abstract

The utility model provides a height-adjustable ceramic flowerpot base, and relates to the technical field of gardening supplies. The base is provided with a two-step type cooperative adjusting mechanism, and the two-step type cooperative adjusting mechanism is composed of a center integrated type miniature electric lifting module and a triangular distributed type manual leg separating adjusting supporting module. The miniature electric lifting module is arranged on the central axis of the base, the output end of the miniature electric lifting module is rigidly connected to the center of the bottom face of the bearing tray through a linear transmission pair, and the miniature electric lifting module is configured to drive the bearing tray and all the supporting legs in mechanical linkage with the bearing tray to synchronously ascend under power-on driving till the bottom ends of the supporting legs are completely separated from the placing face and the suspension height is not smaller than 2 mm. The manual leg-separated adjusting and supporting module comprises three groups of telescopic supporting legs which are annularly and uniformly distributed at 120 degrees, each group of supporting legs is independently connected to the bottom of the bearing tray through a fine thread transmission pair, the problem that the posture of a flowerpot is unstable in the height adjusting process of the flowerpot base is effectively solved through the scheme, and safe and accurate height adjustment is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of horticultural products, in particular to a height-adjustable ceramic flowerpot base. BACKGROUND

[0002] With the increasing demand for green plant decoration in modern home environment, the placement height of flowerpots, as important containers for plant cultivation, directly affects the growth state and ornamental effect of plants. In scenarios such as family balconies, living room tabletops, and office window ledges, users often need to adjust the height of flowerpots according to the growth stage of plants, space layout, and personal aesthetic needs to achieve the best lighting conditions and visual effects. There are various flowerpot base products on the market, among which the height-adjustable bases usually adopt a multi-leg support structure to change the overall height of the base by manually rotating the adjustment devices of each support leg. Such products are generally composed of a bearing platform, support legs, and an adjustment mechanism. Users need to directly adjust the support legs to adapt the height of the base to different placement needs.

[0003] However, in the prior art, the height adjustment process of the flowerpot base is often accompanied by instability of the flowerpot posture, making it difficult to maintain the stability of the flowerpot during the adjustment process. CONTENT OF THE INVENTION

[0004] The height-adjustable ceramic flowerpot base provided by the present application can solve the technical problem of instability of the flowerpot posture during the height adjustment process of the flowerpot base. In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] The application provides a height-adjustable ceramic flowerpot base, which comprises a bearing tray, a support structure and a drive control unit, the bearing tray is used for supporting the ceramic flowerpot, the support structure is used for contacting with the placing surface and providing stable support, and the drive control unit is used for providing power and operation interface required for adjustment. The base is provided with a two-step cooperative adjustment mechanism, which is composed of a center integrated micro electric lifting module and a triangular distributed manual leg adjustment support module. The micro electric lifting module is arranged on the center axis of the base, and the output end thereof is rigidly connected to the center of the bottom surface of the bearing tray through a linear transmission pair. The micro electric lifting module is configured to drive the bearing tray and all the support legs mechanically connected therewith to rise synchronously under the driving of power supply until the bottom ends of the support legs are completely separated from the placing surface and the overhanging height is not less than 2mm. The manual leg adjustment support module comprises three groups of telescopic support legs which are uniformly distributed in a 120° annular shape. Each group of support legs is independently connected to the bottom of the bearing tray through a fine thread transmission pair, and is respectively provided with an adjustment knob with a height scale mark. In the overhanging state of the bearing tray, the corresponding support leg is driven to axially extend or retract by rotating the adjustment knob, so that the height is quantitatively fine adjusted. After the adjustment is completed, the three groups of support legs are synchronously landed and form coplanar triangular support. At this time, the micro electric lifting module stops working and does not participate in bearing. The height and attitude of the whole base are determined by the final extension length of the three groups of support legs.

[0006] In an optional embodiment, the micro electric lifting module comprises a micro servo motor with a rated power of not more than 5W and a rated voltage of 12V, and a trapezoidal thread micro lead screw coaxially connected thereto. The micro lead screw has a diameter of 8mm and a pitch of 2mm. The rotary motion of the micro lead screw is converted into the linear motion of the lifting sleeve through thread cooperation, so that the bearing tray rises at a uniform speed of not more than 5mm / s, and when the bottom end of the support leg anti-skid pad is separated from the placing surface and the overhanging height reaches 2mm, a stop signal is triggered by a mechanical limit switch arranged at the end of the lifting sleeve stroke.

[0007] In an optional embodiment, the three groups of support legs are uniformly distributed in an annular shape with the center of the bearing tray as the center. The central angle formed by the center line of any two adjacent groups of support legs and the center of the circle is 120°±5°. The adjustment screw rod of each group of support legs adopts a fine metric thread with a pitch of 1.25mm, and the edge of the adjustment knob is provided with a height scale line with a precision of 0.5mm in the circumferential direction. The starting point of the scale line corresponds to the fully retracted state of the support leg. The maximum adjustable telescopic stroke is 10mm.

[0008] In an optional embodiment, the bearing tray has a circular structure, and the inner surface thereof is uniformly distributed with an array of silica gel anti-skid convex points. The diameter of the silica gel anti-skid convex point is 3mm, the height thereof is 1.5mm, the center distance between adjacent convex points is 15mm, and the convex point material is natural silica gel with a Shore hardness of 60°±3°.

[0009] In an alternative embodiment, the center area of the bottom of the bearing tray is provided with four drainage holes with a diameter of 5 mm, each of which is connected to a common annular flow channel below, which is located on the bottom surface of the bearing tray, with a depth of 1 mm and a width of 8 mm, and the outer edge thereof closely fits with the annular sealing ring on the top of the detachable water receiving box, which is integrally formed by soft silica gel with a height of 2 mm.

[0010] In an alternative embodiment, the bottom end of each of the three sets of support legs is fixed with a circular silica gel anti-skid pad, which has a diameter of 20 mm and a thickness of 3 mm, is made of natural silica gel, has a Shore hardness of 60°±5°, and has a static friction coefficient of not less than 0.9 when measured on the contact surface of glass or glazed ceramic tiles.

[0011] In an alternative embodiment, the bearing tray is made of glass fiber reinforced modified ABS engineering plastic, with a bending strength of not less than 85 MPa, and the surface is treated by spraying a matte coating, which is a ceramic-like textured polyurethane resin with a glossiness (60° angle) of ≤15 GU and an adhesion of ISO level 1.

[0012] In an alternative embodiment, the micro lead screw and the adjusting threaded rod are both made of 304 stainless steel and are treated by passivation, with a passivation layer of colorless chromate conversion film with a thickness of 0.2-0.5 μm, and no red rust is produced after 96 hours of neutral salt spray test (NSS).

[0013] In an alternative embodiment, the bottom end of the adjusting knob is provided with an annular limiting groove, and the top end of the support leg is provided with an annular limiting protrusion that is movably embedded therein, and the two cooperate to limit the adjusting knob to only rotate around its own axis with an axial displacement of not more than 0.1 mm, and the outer surface of the adjusting knob is provided with radial anti-skid ribs with a depth of 0.3 mm and a pitch of 1.2 mm.

[0014] In an alternative embodiment, the drive form of the micro electric lifting module is a micro servo motor with a trapezoidal threaded lead screw, and the bottom of the support leg is detachably installed with a universal wheel with a brake function.

[0015] The application provides a height-adjustable ceramic flowerpot base, which solves the problem of unstable posture of a flowerpot during height adjustment of the flowerpot base by configuring a two-step coordinated adjustment mechanism. Based on the lifting state, by means of a triangular distributed manual leg adjustment supporting module, three groups of telescopic supporting legs are uniformly distributed in a 120° annular shape, each group of supporting legs is independently connected to the bottom of the bearing tray through a fine thread transmission pair, and each group is equipped with an adjustment knob with a height scale mark, so that in the state of the bearing tray in suspension, the corresponding supporting leg can be driven to extend or retract in the axial direction by rotating the adjustment knob, and the height can be quantitatively fine-tuned. Further, after adjustment is completed, the three groups of supporting legs are synchronously landed and form coplanar triangular support, at this time the micro electric lifting module stops working and does not participate in bearing, the height and posture of the whole base are determined by the final extension length of the three groups of supporting legs, which ensures the stable supporting state after adjustment. The design not only avoids the problem of unstable posture of the flowerpot during adjustment, but also provides accurate height control through the fine thread transmission pair, and the triangular distributed supporting structure enhances the overall stability of the base, so that the flowerpot can maintain a stable posture after adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0017] Figure 1 It is a sectional view of the embodiment of the present application;

[0018] Figure 2 It is a top view of the embodiment of the present application;

[0019] Main figure mark explanation: 10, tray; 11, lifting module; 12, supporting module; 13, adjustment knob; 14, threaded rod; 15, screw rod; 16, lifting sleeve; 17, water receiving box; 18, control panel; 19, non-slip pad; 20, motor; DETAILED DESCRIPTION

[0020] The technical solutions in the present application will be clearly and completely described in the present application in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application. It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0021] The existing ceramic flowerpot base directly adjusts the supporting legs in the bearing state, which is easy to cause the tray to tilt, the flowerpot to slip or even to overturn, leading to unsafe operation, easy damage of the object, and lack of effective control mechanism for the mechanical state of the adjustment process.

[0022] Therefore, referring to Figure 1 and Figure 2 , the present embodiment provides a height-adjustable ceramic flowerpot base, which comprises a bearing tray 10, a supporting structure and a driving control unit. The bearing tray 10 is used to support the ceramic flowerpot. The supporting structure is used to contact with the placing surface and provide stable support. The driving control unit is used to provide the power and operation interface required for adjustment. The base is configured with a two-step coordinated adjustment mechanism, which is composed of a center integrated micro electric lifting module 11 and a triangular distributed manual leg adjustment supporting module 12. The micro electric lifting module 11 is arranged on the center axis of the base, and the output end thereof is rigidly connected to the center of the bottom surface of the bearing tray 10 through a linear transmission pair. It is configured to drive the bearing tray 10 and all the supporting legs mechanically linked therewith to rise synchronously under the driving of power supply, until the bottom ends of each supporting leg completely separate from the placing surface and the overhanging height is not less than 2mm. The manual leg adjustment supporting module 12 comprises three groups of telescopic supporting legs uniformly distributed in a 120° annular shape. Each group of supporting legs is independently connected to the bottom of the bearing tray 10 through a fine thread transmission pair, and each is equipped with an adjustment knob 13 with height scale mark. It is configured to drive the corresponding supporting leg to extend or retract along the axial direction by rotating the adjustment knob 13 to realize the quantitative fine adjustment of the height under the overhanging state of the bearing tray 10. After adjustment, the three groups of supporting legs are synchronized to fall to the ground and form coplanar triangular support. At this time, the micro electric lifting module 11 stops working and does not participate in bearing. The height and attitude of the whole base are determined by the final extension length of the three groups of supporting legs.

[0023] Wherein, "the bearing tray 10" is a circular modified ABS engineering plastic piece, the inner wall edge is provided with a 10mm high fence; "the support structure" is specifically 3 groups of aluminum alloy hollow support legs, each group of leg body outer diameter is 12mm, the effective telescopic stroke is 10mm, the bottom end is bonded with a diameter of 20mm natural silica gel non-slip pad 19; "the drive control unit" includes a mini control panel 18 (size 40x20x5mm, containing "rise" "stop" double button and LED backlight) embedded in the side of the tray 10, 1200mAh rechargeable lithium battery and Type-C charging interface; "the center integrated micro electric lifting module 11" is driven by FAULHABER2232S012SR micro servo motor 20 (aluminum alloy shell + pure copper coil, volume 30x20x20mm, speed 60r / min, output torque 0.8N·m) with rated power 5W, rated voltage 12V, the output shaft of the motor 20 is coaxially connected with the trapezoidal thread micro lead screw 15 through a φ5mm stainless steel coupling; the micro lead screw 15 is made of 304 stainless steel, and the surface is passivated; the lifting sleeve 16 is made of 6061 aluminum alloy, and is fastened with the bottom center connecting seat of the bearing tray 10 through stainless steel countersunk screw; in the "triangular distribution type manual leg adjusting support module 12", 3 groups of support legs are evenly distributed in a 120° ring with the geometric center of the bearing tray 10 as the center, and the top end of each support leg is provided with an annular limiting protrusion, which is movably embedded with the annular clamping groove at the bottom end of the adjusting knob 13;

[0024] The adjusting knob 13 is an ABS engineering plastic injection molding piece, and 12 anti-slip ribs are distributed radially on the outer surface, and the edge is marked with 0-10mm height scale line (the minimum division value is 0.5mm), and the scale zero point corresponds to the end face of the knob flush with the top end of the support leg when the support leg is completely retracted; the adjusting screw rod 14 is made of 304 stainless steel, with a diameter of 6mm, a length of 25mm, a pitch of 1.25mm, an M4 threaded hole at the top end, and is fixed with the bottom embedded metal insert of the bearing tray 10 through M4x6mm stainless steel screw;

[0025] In practical applications, the micro servo motor 20 can also be selected from the MAXON EC-i 16 series brushless DC motor 20, and the micro lead screw 15 can also be replaced by a ball screw 15, and the embodiments of the application do not limit this. The working principle of the structure is as follows: after the user presses the "up" key, the motor 20 starts and drives the lead screw 15 to rotate, the lead screw 15 cooperates with the lifting sleeve 16 to generate an upward thrust, and the bearing tray 10 is pushed together with the flowerpot and the three groups of supporting legs to uniformly ascend; when the lifting sleeve 16 touches the mechanical limit switch at the end of the stroke, the motor 20 is powered off and stopped, at this time, the silicone pad at the bottom of the supporting leg has completely separated from the table top, and the measured overhanging height is 2.3 mm; then the user rotates the three adjusting knobs 13 in turn, drives each supporting leg to independently extend through the fine thread pair, and sets the target height according to the scale line; after the heights of the three legs are consistent, the user releases his hand, and the supporting legs naturally fall and adhere to the table top to form three-point coplanar support, at this time, the center lifting module 11 is overhanging and not bearing. This embodiment realizes strict decoupling of the adjustment action and the bearing state, eliminates the instability risk caused by adjustment in the bearing state from the source, ensures that the ceramic flowerpot is always in a safe state of being controlled, stable and without lateral disturbance during the entire height adjustment process, and significantly improves the operation safety and the protection ability of the object.

[0026] The existing electric lifting structure generally has problems of response lag, uncontrollable stroke, lack of overhanging to position criterion, etc., which leads to difficulty in accurately reproducing the lifting end point, and affects the reliability and consistency of subsequent manual adjustment. In the embodiment, the micro electric lifting module 11 includes a micro servo motor 20 with a rated power of not greater than 5W and a rated voltage of 12V, and a trapezoidal thread micro lead screw 15 coaxially connected thereto; the micro lead screw 15 has a diameter of 8mm and a pitch of 2mm, and the rotational movement thereof is converted into the linear movement of the lifting sleeve 16 through thread cooperation, so that the bearing tray 10 ascends at a uniform speed of not higher than 5mm / s, and when the anti-slip pad 19 at the bottom of the supporting leg separates from the placing surface and the overhanging height reaches 2mm, a mechanical limit switch arranged at the end of the stroke of the lifting sleeve 16 triggers a stop signal.

[0027] In the embodiment, the three groups of supporting legs are evenly distributed in a ring shape with the center of the bearing tray 10 as the center, and the central angle formed by the center line of any two adjacent groups of supporting legs and the center is 120°±5°; the adjusting screw rod 14 of each group of supporting legs adopts a fine metric thread with a pitch of 1.25mm, and the edge of the adjusting knob 13 is provided with height scale lines with a precision of 0.5mm in the circumferential direction, the starting point of the scale line corresponds to the fully retracted state of the supporting leg, and the maximum adjustable extension stroke is 10mm.

[0028] The bottom of the bearing tray 10 is provided with three M4 threaded connecting seats distributed at 120°, and the positional tolerance is controlled within Φ0.05 mm (guaranteed by CNC four-axis machining); the adjusting threaded rod 14 is made of 304 stainless steel, and after cold drawing and forming, M6x1.25 fine thread is rolled, the surface roughness of the thread is Ra≤0.8 μm, and when the threaded rod is matched with the inner thread (M6x1.25) of the hollow sleeve of the supporting leg, the axial displacement is ≤0.03 mm; the adjusting knob 13 is made of ABS engineering plastic by injection molding, the mold cavity precision is ±0.02 mm, the scale line is formed by laser etching, the depth is 15 μm, the line width is 0.15 mm, and 0-10 mm has 20 grids, each grid corresponds to 1 / 2 rotation of the knob (i.e. the axial displacement of the threaded rod 14 is 0.5 mm); the knob and the top end of the supporting leg are movably connected through the annular clamping groove-protrusion structure, the clamping groove depth is 0.8 mm, the width is 1.0 mm, the protrusion height is 0.7 mm, the width is 0.9 mm, and the interference fit amount of the two is 0.05 mm, which ensures that the knob can only rotate and cannot move axially; in actual application, the pitch can also be 1.0 mm or 1.5 mm, and the scale line graduation value is adjusted to 0.4 mm or 0.6 mm accordingly, which is not limited in the embodiment of the application. The working principle of the structure is that: the user rotates the knob by one turn, and the threaded rod 14 moves axially by 1.25 mm under the action of the fine thread; because the scale line of the knob is 0.5 mm per grid, it corresponds to 144° (i.e. 2 / 5 turns) of rotation, and the user can intuitively read the current expansion amount; the three groups of knobs are synchronously rotated by the same number of grids, which can ensure that the three legs are expanded by the same amount; combined with the calibration of the level, the coplanarity of the three legs can be quickly realized. The embodiment controls the manual adjustment error within ±0.3 mm through the three-in-one design of high-precision angle distribution, fine thread transmission and visual scale, guarantees the consistency of the three supporting points, eliminates the risk of tilting after landing, and improves the long-term bearing stability and service life of the base.

[0029] In this embodiment, the bearing tray 10 is a circular structure, and the inner surface thereof is uniformly distributed with silica gel anti-skid convex point array. The diameter of the silica gel anti-skid convex point is 3 mm, the height thereof is 1.5 mm, the center-to-center distance between adjacent convex points is 15 mm, and the convex point material is natural silica gel with a Shore hardness of 60°±3°. The bearing tray 10 base is glass fiber reinforced modified ABS (model CHIMEI PA-777D), and the silica gel convex point array is formed on the inner surface thereof after injection molding. The silica gel raw material is Dow Corning SE1700 liquid silicone rubber, which is vulcanized and formed by baking at 120°C for 30 minutes, and the shear strength of the convex point and the tray 10 base interface is ≥1.2 MPa. The convex points are arranged in a regular triangle grid, and a total of 121 (11x11) convex points are arranged. The outermost circle of convex points is 15 mm away from the edge of the tray 10. The Shore hardness of the natural silica gel is precisely controlled by adjusting the proportion of white carbon black filler, and the hardness of 60°±3° ensures that sufficient static friction (μ≥0.85) is provided while having good elastic deformation capability, which can adapt to ceramic pots with different radian bottoms. In actual application, the convex point shape can also be hemispherical, circular truncated cone or cross rib shape, and the material can also be thermoplastic polyurethane (TPU), which is not limited in this embodiment. The working principle of this structure is as follows: when the ceramic flowerpot is placed on the tray 10, the pot bottom forms multiple-point elastic contact with the silica gel convex points; during the lifting process, the convex points are compressed and deformed to generate normal reaction force and tangential static friction force, which effectively inhibits the lateral sliding of the pot body; after adjustment, the convex points return to their original state and continuously provide anti-skid support. This embodiment uses a high-density, suitable-hardness, and strong-adhesion silica gel convex point array to increase the static friction coefficient between the ceramic flowerpot and the tray 10 to more than 0.85 without increasing the thickness and weight of the tray 10, which significantly inhibits the displacement of the pot body during the lifting and adjustment process and fundamentally reduces the overturning probability.

[0030] In this embodiment, the bottom center area of the bearing tray 10 is provided with four drainage holes with a diameter of 5 mm, and each drainage hole is connected to an annular flow guide groove below; the annular flow guide groove is located on the bottom surface of the bearing tray 10, with a depth of 1 mm and a width of 8 mm, and the outer edge thereof is tightly fitted with an annular sealing baffle ring at the top of the detachable water receiving box 17; the annular sealing baffle ring is integrally formed by soft silica gel with a height of 2 mm. Among them, the four drainage holes at the bottom of the bearing tray 10 are distributed in a square shape (with a side length of 30 mm), and the hole wall is chamfered (0.2 mm x 45°) to prevent burr scratches on the flowerpot; the annular flow guide groove is a concentric circle structure with an inner diameter of 160 mm and an outer diameter of 168 mm, and the groove bottom is provided with a 0.5° slope to guide the center of the water receiving box 17; the water receiving box 17 is made of food-grade PP plastic (model Borealis HE3470FA) by injection molding, and the annular sealing baffle ring at the top is integrally formed with the box body by a secondary injection molding process, with silica gel material KE-107 from Shin-Etsu with a Shore hardness of 30° and a compression permanent set of ≤15%; the water receiving box 17 is connected with the tray 10 through 4 groups of L-shaped buckles, and the buckle root is provided with an elastic arm (thickness 0.8 mm); during assembly, the buckle is hung into the corresponding groove at the bottom of the tray 10, and a "click" sound is emitted after insertion, the sealing baffle ring is deformed by 0.8 mm under pressure, and forms a face contact seal with the bottom surface of the flow guide groove; in actual application, the number of drainage holes can be 3 or 6, and the flow guide groove can also be designed as a spiral or radial shape, which is not limited in the embodiment of the application. The working principle of the structure is as follows: the water seeping from the flowerpot falls into the flow guide groove through the drainage hole, automatically converges to the lowest point along the groove bottom slope, and then uniformly flows into the water receiving box 17 through the micron-level gap (about 0.05 mm after compression) formed between the sealing baffle ring and the bottom surface of the tray 10; the elastic deformation of the sealing baffle ring ensures reliable sealing under all working conditions, and even if the tray 10 is slightly warped, it will not leak. This embodiment realizes 100% controllable flow and collection of overflow water through the four-level waterproof structure of "multi-hole water collection-ring groove flow guide-elastic sealing-buckle quick installation", eliminates internal water accumulation and external leakage, prolongs the service life of the core components of the base, and improves the cleaning convenience of the user.

[0031] In this embodiment, the bottom end of the three support legs is fixed with a circular silica gel anti-skid pad 19, the silica gel anti-skid pad 19 has a diameter of 20 mm, a thickness of 3 mm, a material of natural silica gel, a Shore hardness of 60°±5°, and a static friction coefficient of not less than 0.9 measured on the contact surface of glass or glazed ceramic tile. The silica gel anti-skid pad 19 is formed by a molding process, the raw material is a composite system of Yunnan Tianxiao TSR20 natural rubber and fumed white carbon black, and is vulcanized at 150°C for 10 minutes, the surface is treated by sand blasting (particle size of 80 mesh) to increase the micro roughness; the anti-skid pad 19 is provided with a φ3mm through hole, and is hot riveted with the bottom end of the support leg M3 stud, the riveting pressure is 0.6MPa, the pressure maintaining time is 3 seconds, and the interface peeling strength is ≥0.8N / mm; the bottom end of the support leg aluminum alloy body is processed with a φ20.2mm counterbore, the anti-skid pad 19 is embedded and protrudes 0.2mm from the leg end surface, so as to ensure that the initial contact is the global compression of the silica gel; in actual application, the material of the anti-skid pad 19 can also be selected from fluorosilicone rubber (more excellent oil resistance) or acrylate rubber (more excellent weather resistance), which is not limited in the embodiment. The working principle of the structure is that: in the landing moment, the silica gel pad is elastically deformed under the action of the pre-pressing amount, and the real contact area is increased; the Shore hardness of 60°±5° takes into account the deformation ability and the rebound stiffness, and forms a molecular level adsorption effect on the glass surface, which significantly improves the static friction coefficient; the three-foot synchronous contact ensures uniform distribution of pressure. The embodiment improves the anti-slip ability of the base on the common smooth table surface to more than 40N (far exceeding the daily cleaning touch force) through the high-hardness natural silica gel material, the optimized contact structure and the reliable connection process, ensures the long-term stability of the adjusted posture, and improves the terminal use reliability of the product.

[0032] In the embodiment, the bearing tray 10 is made of glass fiber reinforced modified ABS engineering plastic, the bending strength is not less than 85 MPa, the surface is treated by spraying a matte coating, the coating is a ceramic-like texture polyurethane resin, the glossiness (60° angle) is ≤15GU, and the adhesion reaches ISO level 1. Among them, the substrate selects Chi Mei PA-777D (glass fiber content 20wt%), the injection molding process parameters are: melt temperature 230℃, mold temperature 75℃, holding pressure 80MPa, holding time 25 seconds, the wall thickness of the tray 10 after forming is uniform (3.5mm at the bottom, 2.8mm at the side wall, and 2.2mm at the surrounding barrier), the matte coating uses Bayer Desmodur N75 / Hydrolux 3500 polyurethane system, the solid content is 45%, the spraying film thickness is 35μm, 120℃ baking for 30 minutes for curing, the coating pencil hardness is ≥2H, and there is no peeling after 50 times of alcohol wiping; in actual application, the substrate can also select PC / ABS alloy (such as SABIC CYCOLAC MG47) or PBT+GF30, which is not limited in the embodiment. The working principle of the structure is: the three-dimensional network structure of glass fiber effectively inhibits the slipping of ABS molecular chain, improves the high temperature rigidity and anti-creep performance; the matte coating not only provides a ceramic-like visual effect, but also blocks the penetration of moisture due to its dense cross-linked structure, thereby protecting the ABS matrix from moisture decomposition. The bearing tray 10 in the embodiment has a center deflection of ≤0.15mm under 8kg static load, no plastic deformation under lifting dynamic impact (5mm / s→0), no deformation and discoloration after long-term use, and both structural strength and aesthetic compatibility are considered.

[0033] The micro lead screw 15 and the adjusting screw rod 14 are both made of 304 stainless steel and are subjected to passivation treatment; the passivation layer is a colorless chromate conversion film with a thickness of 0.2-0.5 μm, and no red rust is generated after a neutral salt spray test (NSS) for 96 hours. The lead screw 15 and the screw rod 14 blank are first subjected to cold rolling forming, then subjected to alkaline degreasing (NaOH 50 g / L, 60°C, 5 minutes), pickling activation (HNO3 20% + HF 1%), and then immersed in a nitric acid-potassium dichromate passivation solution (HNO3 450 g / L, K2Cr2O7 5 g / L, temperature 45°C, time 30 minutes), and finally subjected to deionized water rinsing and hot air drying; the passivation film is subjected to X-ray photoelectron spectroscopy (XPS) detection, the Cr / Fe atomic ratio is greater than or equal to 0.8, and the film layer is dense and free of pores; in actual application, the passivation process can also be replaced by electrolytic polishing or vacuum PVD TiN coating, which is not limited in the embodiments of the present application. The working principle of the structure is that the passivation film forms a chromium oxide-rich inert layer on the metal surface, which significantly improves the resistance to chlorine ion corrosion; the friction coefficient of the fine thread tooth surface is reduced by 15% after passivation, and the torque fluctuation of the knob adjustment is reduced. The implementation makes the key transmission part continuously exposed in a 95% RH simulated humid environment for 72 hours, the thread engagement is smooth without jamming, the transmission precision is maintained at more than 98% of the initial value, and the service life requirement of more than 3 years is met.

[0034] In the embodiments, the bottom end of the adjusting knob 13 is provided with an annular limiting clamping groove, and the top end of the supporting leg is provided with an annular limiting protrusion movably embedded therein, the two are matched to limit the adjusting knob 13 to rotate only around its own axis, and the axial displacement is not more than 0.1 mm; the outer surface of the adjusting knob 13 is provided with radial anti-skid ribs, the rib depth is 0.3 mm, and the interval is 1.2 mm. The annular limiting clamping groove and the protrusion are both processed by one-time clamping on a CNC lathe, the clamping groove inner diameter is Φ24.9 mm, and the depth is 0.8 mm, the protrusion outer diameter is Φ25.0 mm, and the height is 0.7 mm, the gap between the two is 0.05 mm; the anti-skid ribs are processed by a mold core etching process, the mold core precision is ±0.01 mm, the rib cross section is a right triangle (included angle 60°), and the friction force is uniformly distributed when the fingers pinch; the knob and the adjusting screw rod 14 are connected by M6x1.25 threads, the thread engagement length is 6 mm, and the Loctite 243 thread locking glue is coated; in actual application, the limiting structure can also use a ball bearing + shaft shoulder positioning, or an elastic check ring + clasp spring groove structure, which is not limited in the embodiments of the present application. The working principle of the structure is that the annular clamping groove-protrusion matched structure constitutes an axial motion constraint pair, which completely limits the axial freedom of the knob; the anti-skid ribs increase the static friction force between the fingers and the knob, and reduce the probability of slipping; the two cooperate to ensure that each rotation is a pure torque input without axial disturbance. The implementation makes the axial displacement of the knob still less than or equal to 0.08 mm after 1000 adjustment cycles, the thread pair has no slip phenomenon, the adjustment hand feeling is stable and consistent, and the human-machine interaction reliability is improved.

[0035] In the embodiment, the drive form of the micro electric lifting module 11 is a micro servo motor 20 matched with a trapezoidal screw rod 15, and as an alternative, a piezoelectric ceramic stack actuator matched with a lever amplification mechanism or a shape memory alloy spring matched with a thermal release mechanism can also be used; when the latter two are used, the output displacement resolution is not less than 0.1 mm, the full stroke response time is not more than 3 seconds, and the power-off self-locking function is provided. Among them, the piezoelectric ceramic scheme adopts a PIP-885.91 stack actuator (stroke 50 μm, output 2500 N), matched with a two-stage lever amplification mechanism (total amplification ratio 40:1), to realize a 2 mm net stroke, a displacement resolution of 0.1 μm, driven by a constant current source, and the position is maintained after power-off; the shape memory alloy scheme adopts a TiNi-based SMA spring (Af=70℃), which is wound on a temperature-controlled heating wire, and the spring is pre-compressed to store energy at room temperature, and after being heated to Af temperature, it is instantaneously elongated to release energy, pushing the lifting sleeve 16 to rise, and automatically resetting after cooling, without the need for continuous power supply throughout the process; both alternative schemes are connected through the same control board interface, and the "up" and "stop" button logic is retained; in actual application, the drive form can also select an electromagnetic linear motor 20 or a voice coil motor 20, and the embodiment of the application does not limit this.

[0036] The above only describes the embodiments of the application and is not used to limit the protection scope of the application. For those skilled in the art, the application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

[0037] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An adjustable height ceramic flowerpot base, comprising a bearing tray for bearing a ceramic flowerpot, a support structure for contacting a placing surface and providing stable support, and a drive control unit for providing power and operating interface required for adjustment; characterized in that The base is configured with a two-step coordinated adjustment mechanism composed of a center integrated micro electric lifting module and a triangular distributed manual leg adjustment support module; the micro electric lifting module is arranged on the center axis of the base, and the output end thereof is rigidly connected to the center of the bottom surface of the bearing tray through a linear transmission pair; the manual leg adjustment support module includes three groups of telescopic support legs uniformly distributed in a 120° annular shape, each group of support legs is independently connected to the bottom of the bearing tray through a fine thread transmission pair, and each is provided with an adjustment knob with a height scale mark, and the corresponding support leg is driven to axially extend or retract by rotating the adjustment knob to realize quantitative fine adjustment of the height.

2. The height-adjustable ceramic pot base of claim 1, wherein: The micro electric lifting module includes a micro servo motor with a rated power of not more than 5W and a rated voltage of 12V, and a trapezoidal thread micro lead screw coaxially connected thereto; the micro lead screw has a diameter of 8mm and a pitch of 2mm.

3. The height-adjustable ceramic pot base of claim 1, wherein: The three groups of support legs are uniformly distributed in an annular shape with the center of the bearing tray as the center, and the central angle formed by the center lines of any two adjacent groups of support legs and the center is 120°±5°; the adjustment screw rod of each group of support legs adopts a fine metric thread with a pitch of 1.25mm, and the edge of the adjustment knob is provided with a height scale line with a precision of 0.5mm in the circumferential direction, the starting point of the scale line corresponds to the fully retracted state of the support leg, and the maximum adjustable telescopic stroke is 10mm.

4. The height-adjustable ceramic pot base of claim 1, wherein: The bearing tray has a circular structure, and the inner surface thereof is uniformly distributed with an array of silica gel anti-skid bumps; the silica gel anti-skid bumps have a diameter of 3mm, a height of 1.5mm, and a center distance between adjacent bumps of 15mm, and the bump material is natural silica gel with a Shore hardness of 60°±3°.

5. The height-adjustable ceramic pot base of claim 1, wherein: Four drainage holes with a diameter of 5mm are arranged in the central area of the bottom of the bearing tray, and each drainage hole is connected to an annular flow guide groove below; the annular flow guide groove is located on the bottom surface of the bearing tray, has a depth of 1mm and a width of 8mm, and the outer edge thereof is tightly fitted with an annular sealing ring on the top of the detachable water receiving box; the annular sealing ring is integrally formed by soft silica gel and has a height of 2mm.

6. The height-adjustable ceramic pot base of claim 1, wherein: The bottom end of each of the three groups of support legs is fixed with a circular silica gel anti-skid pad; the silica gel anti-skid pad has a diameter of 20mm and a thickness of 3mm, is made of natural silica gel, has a Shore hardness of 60°±5°, and has a static friction coefficient of not less than 0.9 measured on the contact surface of glass or glazed ceramic tile.

7. The height-adjustable ceramic pot base of claim 1, wherein: The bearing tray is made of glass fiber reinforced modified ABS engineering plastic, has a bending strength of not less than 85MPa, and has a surface treated by matte coating spraying; the coating is a ceramic-like textured polyurethane resin with a glossiness of ≤15GU and an adhesion of ISO level 1.

8. The height-adjustable ceramic pot base of claim 2, wherein: The micro lead screw and the adjustment screw rod are both made of 304 stainless steel and are subjected to passivation treatment.

9. The height-adjustable ceramic pot base of claim 1, wherein: The bottom end of the adjusting knob is provided with an annular limiting clamping groove, and the top end of the supporting leg is provided with an annular limiting protrusion movably embedded in the annular limiting clamping groove, so that the adjusting knob can only rotate around its own axis and the axial displacement is not more than 0.1 mm; the outer surface of the adjusting knob is provided with radial anti-skid ribs, and the rib depth is 0.3 mm and the interval is 1.2 mm.

10. The height-adjustable ceramic pot base of claim 1, wherein: The driving form of the micro electric lifting module is a micro servo motor matched with a trapezoidal thread screw rod, and the bottom of the supporting leg is detachably provided with a universal wheel with a brake function.

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