Airing rod semi-automatic telescopic mechanism, clothes airing machine and airing rod telescopic control method

Abstract

The application discloses a drying rod semi-automatic telescopic mechanism, a clothes drying machine and a drying rod telescopic control method. The drying rod semi-automatic telescopic mechanism comprises a main drying rod, a telescopic drying rod and a first driving assembly arranged on a main machine component. The telescopic drying rod can be extended or retracted from the end of the main drying rod. A second driving assembly is arranged between the main drying rod and the telescopic drying rod. The first driving assembly has a first docking component exposed from the main machine component. The second driving assembly has a second docking component exposed from the main drying rod. When the main drying rod rises to the lower side of the main machine component, the first docking component is docked with the second docking component, and the first driving assembly drives the second driving assembly to control the extension or retraction of the telescopic drying rod. When the main drying rod is separated from the main machine component, the first docking component is separated from the second docking component, and the telescopic drying rod can be extended or retracted relative to the main drying rod under the action of an external force. The application has the advantages that the driving mechanism and the drying rod assembly are arranged separately, and automation and flexibility are considered.

Description

Technical Field

[0001] This invention relates to the field of smart home drying equipment technology, and in particular to a semi-automatic telescopic mechanism for a drying rod, an electric lifting clothes drying machine having the telescopic mechanism, and a method for controlling the telescopic extension of the drying rod of the electric lifting clothes drying machine. Background Technology

[0002] Electric clothes drying racks use a lifting drive motor inside the main unit to move the pull rope or lifting frame, thus raising and lowering the drying rod assembly. They have become a common appliance on modern family balconies. To adapt to different balcony layouts and increase drying capacity, telescopic drying rod technology is widely adopted.

[0003] In existing technologies, telescopic drying racks are mainly implemented in two ways. The first type is a manual telescopic solution. For example, the utility model patent with authorization announcement number CN223189452U discloses a semi-automatic telescopic drying rack assembly, which achieves manual extension and retraction through the cooperation of a fixed rod, a movable rod, and an elastic element, and maintains the extended state under the action of a locking device. Although this type of solution has a simple structure and does not require additional drive, it has a low degree of automation. Users need to manually adjust the telescopic length of each rack and operate the locking device, which is cumbersome and inconvenient to use.

[0004] The second type is the electric telescopic solution. For example, the invention patent application CN117211048A discloses an electric clothes drying rack telescopic rod drive device, which independently installs a telescopic drive motor inside the fixed rod or movable rod, directly driving the movable rod to extend or retract through the forward and reverse rotation of the motor. Although this type of solution achieves automation of telescopic movement, it requires additional motors, reducers, and control circuits to be arranged inside each drying rod, resulting in a complex drying rod assembly structure, significantly increased weight, and increased manufacturing costs. At the same time, the drive mechanism occupies a large amount of internal space in the drying rod, weakening the structural strength of the drying rod and reducing the effective drying capacity. A more prominent problem is that the built-in motor is constantly exposed to the humid and high-temperature drying environment below, making it susceptible to steam corrosion and dripping water, resulting in a high failure rate, insufficient reliability, and difficult maintenance. Furthermore, the poor heat dissipation of the motor affects its service life.

[0005] In real-world usage scenarios, when the drying rack assembly descends, users typically tend to manually adjust the telescopic drying rack according to the amount of clothing while drying. When the drying rack assembly rises to the bottom of the main unit, users find it difficult to reach the assembly and tend to automatically extend and retract the drying rack.

[0006] In summary, existing electric clothes drying racks lack a solution that centrally houses the telescopic drive motor inside the main unit, maintains a minimalist and lightweight structure for the drying rod assembly, and balances practical usage needs with automation and flexibility. Summary of the Invention

[0007] In view of the shortcomings of the existing electric lifting clothes drying rack's rod extension mechanism, the technical problem to be solved by the present invention is to provide a semi-automatic rod extension mechanism, an electric lifting clothes drying rack with the extension mechanism, and a rod extension control method of the electric lifting clothes drying rack, so as to realize the centralized arrangement of the extension drive motor inside the main unit, the minimalist and lightweight structure of the rod assembly itself, the consideration of actual use needs, and the coexistence of automation and flexibility.

[0008] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a semi-automatic telescopic drying rod mechanism, including a main drying rod, a telescopic drying rod and a first drive component disposed on the main unit; The main drying rod has an internal cavity extending along its length; the telescopic drying rod is telescopically disposed in the internal cavity and can extend or retract from the end of the main drying rod; A second drive assembly is provided between the main drying rod and the telescopic drying rod; The first drive assembly has a first docking component exposed from the main unit; the second drive assembly has a second docking component exposed from the main drying rod; When the main drying rod rises to the lower side of the main unit, the first docking component docks with the second docking component, and the first drive component drives the second drive component to control the extension or retraction of the telescopic drying rod; When the main drying rod is separated from the main unit, the first docking component is separated from the second docking component, and the telescopic drying rod can extend or retract relative to the main drying rod under the action of external force.

[0009] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the second driving component is a lead screw driving component, including a lead screw disposed in the internal space along the length direction of the main drying rod, and a lead screw nut disposed on the lead screw; The inner end of the telescopic drying rod is connected to the lead screw nut; The second docking component is fixed to the lead screw; when the first docking component docks with the second docking component, the first drive assembly drives the second docking component to drive the lead screw to rotate circumferentially, and the lead screw nut moves back and forth along the lead screw to drive the telescopic drying rod to extend or retract. When the first docking component separates from the second docking component, the telescopic drying rod extends or retracts relative to the main drying rod under the action of external force, and the lead screw passively rotates circumferentially as the lead screw nut moves back and forth.

[0010] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the first drive assembly includes a motor and a drive gear set for mounting on the host component, the first end gear of the drive gear set meshes with the output shaft of the motor, and the first docking component is the end gear of the drive gear set; The second docking component is a lead screw gear, which meshes with the end gear of the drive gear set; the lead screw gear is circumferentially fixed to the lead screw.

[0011] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: a telescopic drying rod is provided at each end of the main drying rod; The lead screw is a bidirectional lead screw, the second docking component is disposed in the middle of the bidirectional lead screw, the thread direction of the bidirectional lead screw is symmetrically arranged bidirectionally with the second docking component as the center of symmetry, and the two telescopic drying rods and the lead screw nuts at their inner ends are symmetrically disposed at both ends of the bidirectional lead screw with the second docking component as the center of symmetry. When the bidirectional lead screw is driven to rotate circumferentially, the two telescopic drying rods extend or retract synchronously and symmetrically from both ends of the main drying rod; when the first docking component separates from the second docking component, the telescopic drying rod at one end extends or retracts relative to the main drying rod under the action of external force, and the telescopic drying rod at the other end extends or retracts synchronously and symmetrically from both ends of the main drying rod.

[0012] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the inner end of the telescopic drying rod is provided with an end cap, and the end cap is fixedly connected to the lead screw nut; The telescopic drying rod is provided with a handle at its outer end so that an external force can be applied to extend or retract the telescopic drying rod.

[0013] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: the main drying rod is provided with a screw fixing seat inside; The lead screw fixing seat includes a base, an annular limiting part disposed on the base, and a fastening part at the upper end of the annular limiting part; The base is placed at the bottom of the main drying rod, and the fastening part is fastened to the top of the main drying rod; the lead screw can rotatably pass through the annular limiting part.

[0014] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: a combination of two sets of main drying rods, telescopic drying rods and the second drive assembly respectively disposed on both sides of the main unit; It also includes two sets of the first drive components located on both sides of the main unit; each set of the first drive components can operate independently to drive the second drive components on both sides independently.

[0015] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problem is as follows: the drive gear set shown includes two drive gears that mesh with each other, namely the first end gear and the last end gear; A second parasol wheel is provided on one side of the first end gear, and a first parasol wheel is provided on the output shaft of the motor; the first parasol wheel meshes with the second parasol wheel.

[0016] Another technical solution adopted by the present invention to solve the above-mentioned technical problems is: a clothes drying rack, including a main unit, a lifting component and a drying rod component, and equipped with a semi-automatic telescopic mechanism for the drying rod; The host component has a host housing, and the first drive component is disposed inside the host housing; A docking window is provided on the lower side of the main unit housing, and the first docking component is exposed from the docking window; The drying rack assembly includes the main drying rack, the telescopic drying rack, and the second drive assembly.

[0017] Another technical solution adopted by the present invention to solve the above-mentioned technical problems is: a drying rod telescopic control method, wherein the controlled object is a semi-automatic telescopic mechanism of the drying rod; It includes a main drying rod, a telescopic drying rod, and a first drive assembly mounted on the main unit; The main drying rod has an internal cavity extending along its length; the telescopic drying rod is telescopically disposed in the internal cavity and can extend or retract from the end of the main drying rod; A second drive assembly is provided between the main drying rod and the telescopic drying rod; The first drive assembly has a first docking component exposed from the main unit; the second drive assembly has a second docking component exposed from the main drying rod; Specifically, the steps include the following: When the main drying rod rises to the lower side of the main unit, the first docking component docks with the second docking component, and the first drive component drives the second drive component to control the extension or retraction of the telescopic drying rod; When the main drying rod is separated from the main unit, the first docking component is separated from the second docking component, and the telescopic drying rod can extend or retract relative to the main drying rod under the action of external force.

[0018] Compared with the prior art, the advantages of the present invention are: First, the drive mechanism and the drying rod assembly are arranged separately, balancing automation and flexibility.

[0019] This invention centrally arranges the first drive component inside the main unit, while the second drive component is mounted on the main drying rod. Switching between two operating modes is achieved through the docking and separation of the first and second docking components. When the main drying rod rises to the underside of the main unit, the two docking components engage, and the first drive component drives the second drive component to automatically extend and retract the telescopic drying rod. This solves the problem in existing technologies where users, due to insufficient height, cannot manually adjust the telescopic drying rod after it has risen. When the main drying rod separates from the main unit, the two docking components separate, and the telescopic drying rod can extend or retract relative to the main drying rod under external force. Users can flexibly and freely adjust the extension length of the telescopic drying rod according to the actual needs such as the quantity and type of clothing. Compared with existing technologies, this invention avoids the cumbersome and inconvenient nature of purely manual solutions and overcomes the drawbacks of purely electric solutions, such as complex structure, heavy weight, and high cost due to the built-in motor in each drying rod. It achieves an organic combination of automation and flexibility.

[0020] Second, it significantly simplifies the structure of the drying rack assembly, achieving a lightweight design and reducing energy consumption.

[0021] This invention centralizes the drive motor within the main unit, requiring only a second drive component (such as a lead screw and lead screw nut) in the drying rack assembly. This eliminates the need for additional motors, reducers, and control circuitry within each drying rack. Compared to existing designs that independently house telescopic drive motors within each drying rack, this invention significantly simplifies the drying rack assembly structure, reduces weight considerably, and simultaneously lowers energy consumption during lifting and lowering. Furthermore, it avoids the problem of the drive mechanism occupying a large amount of internal space within the drying rack, effectively ensuring structural strength and increasing effective drying capacity.

[0022] Third, improve the motor's operating environment to enhance system reliability and lifespan.

[0023] This invention centrally arranges the first drive component (including the motor) inside the main unit, instead of embedding the motor within the drying rod as in existing technologies. The main unit is located in the upper drying area, while the drying rod assembly is in the lower, humid, and high-temperature drying environment. Compared to existing technologies, this invention avoids the problems of the motor being susceptible to steam corrosion and dripping water damage from prolonged exposure to a humid and high-temperature environment, significantly reducing the failure rate and improving system reliability. Simultaneously, the ample internal space of the main unit provides excellent heat dissipation for the motor, extending its lifespan and making maintenance more convenient. Attached Figure Description

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 This is a preferred embodiment of the clothes drying rack's usage scenario. Figure 1 ; Figure 2 This is a preferred embodiment of the clothes drying rack's usage scenario. Figure 2 ; Figure 3 This is a schematic diagram of the structure of a clothes drying rack according to a preferred embodiment of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the structure of a clothes drying rack according to a preferred embodiment of the present invention. Figure 2 ; Figure 5 for Figure 4 A magnified view of a portion at point A; Figure 6 for Figure 4 A magnified view of the area at point B; Figure 7 This is a schematic diagram of the structure of a clothes drying rack according to a preferred embodiment of the present invention. Figure 3 ; Figure 8 for Figure 7 A magnified view of the area at point C; Figure 9 This is a schematic diagram of the structure of a semi-automatic telescopic mechanism for a drying rack according to a preferred embodiment of the present invention. Figure 1 ; Figure 10 This is a schematic diagram of the structure of a semi-automatic telescopic mechanism for a drying rack according to a preferred embodiment of the present invention. Figure 2 ; Figure 11 for Figure 10 A magnified view of the area at point D; Figure 12 This is a schematic diagram of the structure of a semi-automatic telescopic mechanism for a drying rack according to a preferred embodiment of the present invention. Figure 3 ; Figure 13 for Figure 12 A magnified view of the area at point E; Figure 14 for Figure 12 A magnified view of the area at point F; Figure 15This is a schematic diagram of the structure of a semi-automatic telescopic mechanism for a drying rack according to a preferred embodiment of the present invention. Figure 4 ; Figure 16 This is a partially enlarged view of the second driving component according to a preferred embodiment of the present invention; Figure 17 This is a cross-sectional view of the main drying rod and the telescopic drying rod according to a preferred embodiment of the present invention; Figure 18 for Figure 17 A magnified view of the area at point G; Figure 19 for Figure 17 A magnified view of the area at point H; Explanation of reference numerals in the attached figures: The system includes a semi-automatic telescopic drying rod mechanism 100, a main drying rod 10, an internal cavity 11, a guide sleeve 12, a telescopic drying rod 20, an end cap 21, a handle 22, a first drive assembly 30, a first docking component 31, a motor 32, an output shaft 32a, a drive gear set 33, a first end gear 33a, a first umbrella wheel 34a, a second umbrella wheel 34b, a motor mounting housing 35, a second drive assembly 40, a second docking component 41, a lead screw 42, a lead screw nut 43, a lead screw fixing seat 44, a base 44a, an annular limiting part 44b, a fastening part 44c, a clothes drying machine 200, a main unit component 210, a main unit housing 211, a docking window 212, a lifting assembly 220, a drying rod assembly 230, and a rod base 240. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1 to 8 The clothes drying rack 200 provided in this embodiment includes a main unit 210, a lifting assembly 220, and a drying rod assembly 230. The main unit 210 is mounted on a ceiling or suspended ceiling and has a main housing 211, as well as a drive module, a power supply module, a main control module, and other mechanisms disposed within the main housing 211. The lifting assembly 220 connects the drying rod assembly 230 to the main unit 210. The drive module in the main unit 210 drives the lifting assembly 220, thereby driving the drying rod assembly 230 to rise and fall. When the drying rod assembly 230 rises to its upper limit, it can be stored under the main housing 210.

[0028] The clothes drying rack 200 is equipped with a semi-automatic telescopic mechanism 100 for the drying rod. Combined with... Figures 9 to 19 The semi-automatic telescopic drying rod mechanism 100 includes a main drying rod 10, a telescopic drying rod 20, and a first drive assembly 30 mounted on the main unit 210. The main drying rod 10 has an internal cavity 11 extending along its length. The telescopic drying rod 20 is telescopically disposed within the internal cavity 11 and can extend or retract from the end of the main drying rod 10. A second drive assembly 40 is provided between the main drying rod 10 and the telescopic drying rod 20.

[0029] The main drying rod 10 is made of hollow profile, with an internal cavity 11 extending along its entire length, providing installation space and movement guidance for the telescopic drying rod 20 and the second drive assembly 40. The cross-sectional shape of the main drying rod 10 can be circular, square, or elliptical; in this embodiment, a square cross-section is preferred to facilitate the installation and positioning of internal components and the aesthetic design of the exterior. Openings for the telescopic drying rod 20 to extend from both ends of the main drying rod 10 are provided, with guide sleeves 12 at the openings and sealing rings may also be provided to reduce friction during telescopic movement and prevent dust from entering the internal cavity 11.

[0030] In this embodiment, the drying rod assembly 230 includes a combination of two main drying rods 10, telescopic drying rods 20, and a second drive assembly 10, each disposed on both sides of the main unit 210. The two main drying rods 10 are arranged in parallel and symmetrically, and connected by two rod seats 240 at their respective ends, forming a rectangular frame structure of the drying rod assembly 230. The rod seats 240 are used to connect to the lower end of the lifting assembly 220. Each end of the two main drying rods 10 is provided with a telescopic drying rod 20, thus there are a total of four telescopic drying rods 20.

[0031] The two ends of the pole base 240 are fixedly connected to the ends of the two main drying poles 10, forming a stable rectangular frame structure. A connecting part is provided in the middle of the pole base 240 for connecting to the lower end of the lifting assembly 220. The lifting assembly 220 can be a scissor lift, a wire rope traction mechanism, or other lifting structures known in the art. In this embodiment, a wire rope traction mechanism is preferred to reduce space occupation and overall weight.

[0032] like Figures 3 to 8 As shown, the first drive assembly 30 is disposed within the main unit housing 211. The first drive assembly 30 has a first docking component 31 protruding from the main unit 210. A docking window 212 is provided on the lower side of the main unit housing 211, through which the first docking component 31 protrudes. This embodiment includes two sets of first drive assemblies 30 disposed on both sides of the main unit 210. A docking window 212 is provided at the lower middle position on both sides of the main unit housing 211, and the first docking components 31 of the two sets of first drive assemblies 30 protrude from the corresponding docking window 212.

[0033] The dimensions and position of the docking window 212 are precisely designed to ensure that the first docking component 31 can accurately dock with the second docking component 41 when the drying rod assembly 230 rises to its upper limit. The edges of the docking window 212 can be provided with guide bevels or elastic sealing strips, which facilitates position compensation during docking and maintains the airtightness of the main unit housing 211 in the non-docked state, preventing dust and insects from entering.

[0034] The second drive assembly 40 has a second docking part 41 protruding from the main drying rod 10. When the main drying rod 10 rises to the underside of the main unit 210, the first docking part 31 docks with the second docking part 41. The first drive assembly 30 drives the second drive assembly 40 to control the extension or retraction of the telescopic drying rod 20, thereby realizing the automatic extension and retraction of the telescopic drying rod 20. When the main drying rod 10 is separated from the main unit 210, the first docking part 31 separates from the second docking part 41, and the telescopic drying rod 20 can extend or retract relative to the main drying rod 10 under the action of external force. At this time, the user can manually pull the outer end of the telescopic drying rod 20 to flexibly and freely control the extension length of the telescopic drying rod 20.

[0035] Therefore, the semi-automatic telescopic drying rod mechanism provided by this invention supports two telescopic drying rod modes in the lowered and raised positions of the drying rod assembly: When the drying rod assembly is in the lowered position, the user can manually pull out the outer end of the telescopic drying rod to control and adjust the extension length of the telescopic drying rod according to the actual needs such as the quantity and type of clothes while drying clothes, which is more flexible and free; When the drying rod assembly rises to the upper limit position, that is, the lower side of the main unit, the first docking part and the second docking part dock, and the first drive component can drive the second drive component to realize the automatic extension and retraction of the telescopic drying rod. This solves the problem that when the drying rod assembly rises, the user's height is not enough to reach the telescopic drying rod, making it difficult to adjust the extension length of the telescopic drying rod, and it is also difficult to manually retract the telescopic drying rod, which facilitates the user's daily use.

[0036] Furthermore, this semi-automatic telescopic mechanism design allows the first drive component to be located in the main unit, rather than in the main drying rod as in existing technologies. This results in a lighter overall drying rod assembly, and energy consumption is reduced when driving it up and down.

[0037] like Figures 12 to 19As shown, the second drive assembly 40 is a lead screw drive assembly, including a lead screw 42 disposed in the internal space 11 along the length direction of the main drying rod 10, and a lead screw nut 43 disposed on the lead screw 42. The inner end of the telescopic drying rod 20 is connected to the lead screw nut 43. The second docking component 41 is fixed to the lead screw 42. When the first docking component 31 docks with the second docking component 41, the first drive assembly 30 drives the second docking component 41 to drive the lead screw 42 to rotate circumferentially, and the lead screw nut 43 moves back and forth along the lead screw 42 to drive the telescopic drying rod 20 to extend or retract.

[0038] When the first docking component 31 separates from the second docking component 41, the telescopic drying rod 20 extends or retracts relative to the main drying rod 10 under the action of external force. The lead screw 42 passively rotates circumferentially as the lead screw nut 43 moves back and forth, thus preventing the extension or retraction of the telescopic drying rod 20 in manual mode.

[0039] The lead screw 42 and lead screw nut 43 are threaded together. When the lead screw 42 is actively driven to rotate by the first drive assembly 30, the lead screw nut 43 converts the rotational motion into linear motion, causing the telescopic drying rod 20 to extend or retract along the length of the main drying rod 10. In manual mode, when the user applies axial tension or thrust to the telescopic drying rod 20, the telescopic drying rod 20 drives the lead screw nut 43 to move axially along the lead screw 42. Due to the helix angle design of the thread, the linear motion of the lead screw nut 43 forces the lead screw 42 to passively rotate circumferentially. This passive rotation requires relatively little torque, and the user only needs to apply a moderate external force to achieve manual adjustment of the telescopic drying rod 20. Furthermore, the passive rotation of the lead screw 42 does not produce significant resistance or jamming during manual operation.

[0040] In this embodiment, each main drying rod 10 has a telescopic drying rod 20 at each end, therefore... Figure 15 and Figure 16 As shown, the lead screw 42 is a bidirectional lead screw, and the second mating part 41 is located in the middle of the bidirectional lead screw (lead screw 42). The thread direction of the bidirectional lead screw (lead screw 42) is bidirectionally symmetrically arranged with the second mating part 41 as the center of symmetry. The two telescopic drying rods 20 and the lead screw nuts 43 at their inner ends are symmetrically arranged at both ends of the bidirectional lead screw (lead screw 42) with the second mating part 41 as the center of symmetry. Therefore, when the bidirectional lead screw (lead screw 42) is driven to rotate circumferentially, the lead screw nuts 43 on both sides move synchronously and symmetrically in opposite directions, so that the two telescopic drying rods 20 can synchronously and symmetrically extend or retract from both ends of the main drying rod 10.

[0041] The design employs a bidirectional lead screw, enabling the two telescopic drying rods 20 at both ends of a single main drying rod 10 to extend and retract synchronously and symmetrically. This design not only ensures the symmetry and aesthetics of the overall structure of the drying rod assembly 230, but more importantly, it ensures balanced force distribution on both ends of the telescopic drying rods 20, preventing tilting or swaying caused by a shift in the center of gravity of the drying rod assembly 230 due to unilateral extension or retraction. In automatic mode, the motor 32 only needs to drive one bidirectional lead screw 42 to rotate, simultaneously controlling the movement of both telescopic drying rods 20, simplifying the control logic and reducing energy consumption. In manual mode, the user only needs to pull one side of the telescopic drying rod 20, and the passive rotation of the bidirectional lead screw 42 will synchronously drive the other side's telescopic drying rod 20, achieving convenient "pull one side, move both sides" operation and greatly enhancing the user experience.

[0042] When the first docking component 31 separates from the second docking component 41, the telescopic drying rod 20 at either end extends or retracts relative to the main drying rod 10 under the action of external force. The movement of the lead screw nut 43 causes the bidirectional lead screw (lead screw 42) to passively rotate circumferentially, thereby transmitting the rotation to the lead screw nut 43 on the opposite side. This causes the lead screw nut 43 on the opposite side to move synchronously and symmetrically in opposite directions, and consequently, the telescopic drying rod 20 at the other end extends or retracts synchronously and symmetrically from both ends of the main drying rod 10. Thus, the user only needs to pull one side of the telescopic drying rod 20 to synchronously adjust and control the extension length of the telescopic drying rod 20 on the opposite side.

[0043] like Figures 17 to 19 As shown, the telescopic drying rod 20 has a hollow structure, with a lead screw 42 passing through it. An end cap 21 is located at the inner end of the telescopic drying rod 20, and is fixedly connected to the lead screw nut 43. This allows the telescopic drying rod 20 to move along the lead screw 42 under the influence of the lead screw nut 43, thus extending and retracting relative to the main drying rod 10. Another function of the end cap 21 is to maintain a gap between the telescopic drying rod 20 and the lead screw 42 to prevent friction and rubbing during movement, which could cause obstruction.

[0044] The end cap 21 is generally cylindrical or rectangular, and its outer contour is adapted to the hollow inner cavity of the telescopic drying rod 20. In this embodiment, a rectangular shape is used to adapt to the rectangular cross-section of the telescopic drying rod 20. It can be fixed to the inner end of the telescopic drying rod 20 by means of threaded connection, snap-fit ​​connection or welding. A through hole is opened in the center of the end cap 21, through which the lead rod 42 passes. The inner diameter of the through hole is larger than the outer diameter of the lead rod 42 to form a clearance fit, ensuring that the end cap 21 will not come into contact with the lead rod 42 for friction when the telescopic drying rod 20 moves. Preferably, the end cap 21 has a connecting boss or threaded hole on the side facing the lead rod nut 43 for fixed connection with the lead rod nut 43. The end cap 21 can also play a limiting role. When the telescopic drying rod 20 is extended to the limit position, the end cap 21 can abut against the limiting structure 13 inside the main drying rod 10 to prevent the telescopic drying rod 20 from over-extending and detaching from the drying rod assembly 230.

[0045] like Figure 14 As shown, the telescopic drying rod 20 is provided with a handle 22 at its outer end so as to apply an external force to extend or retract the telescopic drying rod 20.

[0046] like Figure 13 , Figure 16 and Figure 18 As shown, the main drying rod 10 has a lead screw fixing seat 44 inside. The lead screw fixing seat 44 includes a base 44a, an annular limiting part 44b disposed on the base 44a, and a fastening part 44c at the upper end of the annular limiting part 44b. The base 44a is placed at the bottom of the main drying rod 10, and the fastening part 44c is fastened to the top of the main drying rod 10. The lead screw 42 can rotate circumferentially through the annular limiting part 44b. The lead screw fixing seat 44 supports and limits the lead screw 42, and can also limit the movement of the lead screw nut 43 at its inner end.

[0047] The base 44a is flat or curved, and its shape is adapted to the bottom contour of the cavity 11 inside the main drying rod 10. It can be placed directly or fixed to the bottom of the main drying rod 10 with screws. In this embodiment, the base 44a is slightly curved to provide stable support based on the lead screw 42. The fastening part 44c extends outward from the upper end of the annular limiting part 44b to form a flange-like structure. It is fastened to the top of the main drying rod 10 with screws or clips, thereby securely installing the lead screw fixing seat 44 inside the main drying rod 10. The side surface of the lead screw fixing seat 44 facing the lead screw nut 43 can serve as the inner end limiting surface of the lead screw nut 43. When the lead screw nut 43 moves inward to contact the lead screw fixing seat 44, it reaches the retracted limit position.

[0048] like Figures 9 to 13 As shown, the first drive assembly 30 includes a motor 32 and a drive gear set 33 for mounting on the main unit 210. The first gear 33a of the drive gear set 33 meshes with the output shaft 32a of the motor 32. The first docking component 31 is the end gear (first docking component 31) of the drive gear set 33. The second docking component 41 is a lead screw gear, which meshes with the end gear (first docking component 31) of the drive gear set 33. The lead screw gear (second docking component 41) is circumferentially fixed to the lead screw 42. When the output shaft 32a of the motor 32 rotates forward or backward, the end gear (first docking component 31) drives the lead screw gear (second docking component 41) to rotate forward or backward through the drive gear set 33, thereby driving the lead screw 42 to rotate circumferentially in the forward or reverse direction, thus driving the lead screw nut 43 to extend or retract the telescopic drying rod 20.

[0049] The meshing design of the first docking component 31 (end gear) and the second docking component 41 (lead screw gear) should ensure the accuracy of docking and the smoothness of transmission. The module, pressure angle, and other parameters of the two gears should be strictly matched to ensure appropriate backlash during meshing, avoiding both excessive tightness leading to jamming and excessive looseness causing impact and noise. The portion of the gear exposed from the docking window 212 of the first docking component 31 can be hardened to improve wear resistance. When the drying rod assembly 230 rises to its upper limit, the main control module can control the lifting assembly 220 to make fine adjustments to ensure accurate alignment of the tooth grooves of the first docking component 31 and the second docking component 41, achieving smooth meshing. After the two gears mesh, the power of the motor 32 is transmitted to the lead screw 42 step by step through the drive gear set 33, resulting in high transmission efficiency. Furthermore, the extension speed and output torque can be optimized by adjusting the transmission ratio of the gear set.

[0050] As can be seen from this, in this embodiment, the first drive component uses a combination of a motor and gears, and the second drive component uses a combination of a lead screw and a lead screw nut. Power transmission between the first and second drive components is achieved through gear engagement. In other embodiments, other drive and transmission methods can be used to achieve automatic extension and retraction after engagement. Typically, for example, the first drive component can use a combination of a motor, belt, and pulley; the second drive component can use a rack and pinion mechanism along the length of the main drying rod, i.e., a gear and rack combination.

[0051] When a combination of a motor, belt, and pulley is used as the first drive assembly, the motor drives the driving pulley to rotate, which in turn drives the driven pulley to rotate via the belt. A first mating component, such as a mating gear or a mating shaft, can be installed on the driven pulley. When a gear and rack combination is used as the second drive assembly, the rack is fixedly mounted on the telescopic drying rod along the length of the main drying rod. The gear meshes with the rack, and the first mating component drives the gear to rotate, thereby causing the rack and the telescopic drying rod to move linearly. These alternative solutions also achieve the core inventive concept of this invention, namely, realizing the automatic extension and retraction of the telescopic drying rod by mating the drive mechanism within the main unit with the transmission mechanism on the drying rod.

[0052] Furthermore, in this embodiment, the two sets of first drive components 30 can operate independently to independently drive the second drive components 40 on both sides. That is, when the drying rod assembly 230 rises to the lower side of the main unit 210, the first docking components 31 and the second docking components 41 on both sides are engaged. At this time, the user can independently control the motor 32 on either side as needed to independently control the extension and retraction of the telescopic drying rod 20 on either side.

[0053] The independent operation design of the two sets of first drive components 30 allows users to flexibly control the telescopic drying rods 20 on both sides of the drying rod assembly 230 according to actual drying needs. For example, when one side of the balcony is close to a wall or obstacle, the user can control only the telescopic drying rod 20 on that side to retract, while the telescopic drying rod 20 on the other side remains extended, thus adapting to asymmetrical spatial layouts. Similarly, when there are more clothes drying on one side and fewer on the other, only the telescopic drying rod 20 on the side with more clothes can be extended, achieving differentiated space utilization. This independent control method improves the environmental adaptability and operational flexibility of the clothes dryer.

[0054] like Figure 3 As shown, in this embodiment, the internal layout design of the main unit housing 211 supports placing the first drive assembly 30 on the outermost side of the internal mounting space of the main unit housing 211, thereby shortening the transmission stroke. Therefore, the drive gear set 33 in this embodiment includes two meshing drive gears, namely the first end gear 33a and the last end gear (first docking component 31). In other embodiments, the number of gears in the drive gear set 33 can be increased or decreased depending on the actual internal layout of the main unit housing 211. This embodiment uses two drive gears instead of one, with the last end gear (first docking component 31) protruding from the main unit housing 211, and the first end gear 33a connected to the output shaft 32a of the motor 32. This avoids the motor 32 and its output shaft 32a being exposed outside the main unit housing 211, reducing direct contact between electronic components and the outside world, and protecting the electronic components.

[0055] The internal spatial layout of the main unit housing 211 is optimized, placing the first drive assembly 30 closest to the corresponding docking window 212. This minimizes the transmission chain of the drive gear set 33, reducing intermediate transmission links, improving transmission efficiency, and lowering energy loss. Simultaneously, this layout ensures that electronic components such as the motor 32 and control circuitry are completely housed within the sealed space of the main unit housing 211, preventing contact with external humid air, dust, and insects. The main unit housing 211 can be made of stamped metal sheet or injection molded plastic, providing excellent structural strength and sealing performance. A cooling fan or heat sink can also be installed inside the main unit housing 211 to improve heat dissipation for heat-generating components such as the motor 32.

[0056] Preferably, such as Figure 9 As shown, the drive gear set 33 is disposed inside the motor mounting housing 35. The lower side of the motor mounting housing 35 has a slot to expose the end gear (first mating part 31). The motor 32 is fixedly mounted on the rear side of the motor mounting housing 35, thereby further providing housing protection for the drive gear set 33.

[0057] like Figure 11 and Figure 13As shown, a second parasol wheel 34b is provided on one side of the first gear 33a, and a first parasol wheel 34a is provided on the output shaft 32a of the motor 32. The first parasol wheel 34a meshes with the second parasol wheel 34b, thereby realizing the electric drive of the motor 32 to the drive gear set 33.

[0058] The first parapet wheel 34a and the second parapet wheel 34b form a bevel gear pair (or bevel gear pair) to realize power transmission between two intersecting shafts. In this embodiment, the output shaft 32a of the motor 32 is arranged approximately horizontally, while the transmission shaft of the drive gear set 33 is arranged approximately vertically. The meshing of the first parapet wheel 34a and the second parapet wheel 34b realizes the power redirection from the horizontal to the vertical direction. The bevel gear pair has high transmission efficiency, strong load-bearing capacity, smooth transmission, and low noise. The first parapet wheel 34a can be directly fixed on the output shaft 32a of the motor 32, and the second parapet wheel 34b can be set on the transmission shaft of the first end gear 33a by means of key connection, interference fit, or integral molding.

[0059] The following describes the method for controlling the extension and retraction of the clothes drying rack of the electric lifting clothes drying rack provided in this embodiment, based on the semi-automatic telescopic mechanism 100 and the electric lifting clothes drying rack 200 with the telescopic mechanism provided in this embodiment. The method specifically includes the following steps: When the drying rod assembly 230 descends and the main drying rod 10 separates from the main unit 210, the first docking part 31 separates from the second docking part 41, and the telescopic drying rod 20 can freely extend or retract relative to the main drying rod 10 under the action of external force.

[0060] When the telescopic drying rod 20 at any end of the main drying rod 10 is pulled out, it drives the lead screw nut 43 on that side to move outward along the lead screw 42. The lead screw 42 passively rotates in the forward circumferential direction, driving the lead screw nut 43 on the opposite side to move synchronously and symmetrically along the lead screw 42 to the opposite side's outer end. Thus, the telescopic drying rod 20 on the opposite side extends synchronously and symmetrically from the other end of the main drying rod 10.

[0061] When the telescopic drying rod 20 at any end of the main drying rod 10 is pushed in, it causes the lead screw nut 43 on that side to move inward along the lead screw 42. The lead screw 42 is passively rotated in the opposite circumferential direction, driving the lead screw nut 43 on the opposite side to move synchronously and symmetrically along the lead screw 42 inward, so that the telescopic drying rod 20 on the opposite side retracts synchronously and symmetrically from the other end of the main drying rod 10.

[0062] In manual mode, the user holds handle 22 and applies axial pulling or pushing force to either end of the telescopic drying rod 20. Taking the pull-out operation as an example, when the user pulls the left telescopic drying rod 20 outward, the telescopic drying rod 20 causes its inner end cap 21 and lead screw nut 43 to move to the left along the lead screw 42. Due to the threaded engagement between the lead screw nut 43 and the lead screw 42, the leftward movement of the lead screw nut 43 forces the lead screw 42 to rotate in the forward direction. The rotation of the lead screw 42 is transmitted to the right lead screw nut 43 through the thread, driving the right lead screw nut 43 to move to the right along the lead screw 42, thereby causing the right telescopic drying rod 20 to extend synchronously. The working principle of the push-in operation is the opposite. This "single-end operation, double-end synchronization" mechanism eliminates the need for the user to operate the telescopic drying rods 20 at both ends separately, simplifying the operation process and improving ease of use.

[0063] When the drying rod assembly 230 rises to the lower side of the main unit 210 and the main drying rod 10 rises to the lower side of the main unit 210, the first docking part 31 docks with the second docking part 41.

[0064] The motor 32 of the first drive assembly 30 on any side rotates forward, driving the second docking component 41 to rotate forward through the drive gear set 33, thereby driving the lead screw 42 on that side to rotate forward. The lead screw nuts 43 at both ends of the lead screw 42 move outward synchronously and symmetrically along the lead screw 42, so that the two telescopic drying rods 20 extend outward synchronously and symmetrically from both ends of the main drying rod 10.

[0065] The motor 32 of the first drive assembly 30 on either side reverses, driving the second docking component 41 to reverse via the drive gear set 33, thereby driving the lead screw 42 on that side to reverse. The lead screw nuts 43 at both ends of the lead screw 42 on that side move synchronously and symmetrically inward along the lead screw 42, so that the two telescopic drying rods 20 retract synchronously and symmetrically from both ends of the main drying rod 10.

[0066] More preferably, the drying rod assembly 230 rises under the traction of the lifting assembly 220. When it approaches the upper limit, the main control module controls the lifting assembly 220 to decelerate to ensure smooth docking. When the main drying rod 10 rises to the position where the teeth of the second docking component 41 (lead screw gear) align with the teeth of the first docking component 31 (end gear), the two gears begin to mesh. The main control module can determine whether the docking is successful through a position sensor or current detection. After successful docking, the first drive assembly 30 can receive control commands to drive the second drive assembly 40 to work.

[0067] In summary, the semi-automatic telescopic mechanism for the clothes drying rod, the clothes drying machine, and the telescopic control method for the clothes drying rod provided by this invention achieve at least the following three beneficial effects: In automatic mode, users can send extension control commands to the main control module via remote control, mobile app, or voice commands. Upon receiving the command, the main control module controls the corresponding motor 32 to rotate forward or reverse. The power of the motor 32 is transmitted to the second docking component 41 (lead screw gear) via the first umbrella wheel 34a, the second umbrella wheel 34b, the first gear 33a, and the last gear (first docking component 31), driving the lead screw 42 to rotate, thereby causing the two telescopic drying rods 20 to extend or retract synchronously. The main control module can monitor the current of the motor 32 in real time. When the current increases abnormally, such as in the event of resistance or overload, the motor 32 is immediately stopped and an alarm is triggered to protect the motor 32 and the transmission mechanism. In addition, the main control module can also precisely control the extension length of the telescopic drying rods 20 by detecting the number of rotations of the motor 32 or setting limit switches to avoid over-extension or over-retraction.

[0068] First, the drive mechanism and the drying rod assembly are arranged separately, balancing automation and flexibility.

[0069] This invention centrally arranges the first drive component inside the main unit, while the second drive component is mounted on the main drying rod. Switching between two operating modes is achieved through the docking and separation of the first and second docking components. When the main drying rod rises to the underside of the main unit, the two docking components engage, and the first drive component drives the second drive component to automatically extend and retract the telescopic drying rod. This solves the problem in existing technologies where users, due to insufficient height, cannot manually adjust the telescopic drying rod after it has risen. When the main drying rod separates from the main unit, the two docking components separate, and the telescopic drying rod can extend or retract relative to the main drying rod under external force. Users can flexibly and freely adjust the extension length of the telescopic drying rod according to the actual needs such as the quantity and type of clothing. Compared with existing technologies, this invention avoids the cumbersome and inconvenient nature of purely manual solutions and overcomes the drawbacks of purely electric solutions, such as complex structure, heavy weight, and high cost due to the built-in motor in each drying rod. It achieves an organic combination of automation and flexibility.

[0070] Second, it significantly simplifies the structure of the drying rack assembly, achieving a lightweight design and reducing energy consumption.

[0071] This invention centralizes the drive motor within the main unit, requiring only a second drive component (such as a lead screw and lead screw nut) in the drying rack assembly. This eliminates the need for additional motors, reducers, and control circuitry within each drying rack. Compared to existing designs that independently house telescopic drive motors within each drying rack, this invention significantly simplifies the drying rack assembly structure, reduces weight considerably, and simultaneously lowers energy consumption during lifting and lowering. Furthermore, it avoids the problem of the drive mechanism occupying a large amount of internal space within the drying rack, effectively ensuring structural strength and increasing effective drying capacity.

[0072] Third, improve the motor's operating environment to enhance system reliability and lifespan.

[0073] This invention centrally arranges the first drive component (including the motor) inside the main unit, instead of embedding the motor within the drying rod as in existing technologies. The main unit is located in the upper drying area, while the drying rod assembly is in the lower, humid, and high-temperature drying environment. Compared to existing technologies, this invention avoids the problems of the motor being susceptible to steam corrosion and dripping water damage from prolonged exposure to a humid and high-temperature environment, significantly reducing the failure rate and improving system reliability. Simultaneously, the ample internal space of the main unit provides excellent heat dissipation for the motor, extending its lifespan and making maintenance more convenient.

[0074] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0075] The semi-automatic telescopic mechanism for clothes drying rods, the clothes drying machine, and the telescopic control method for clothes drying rods provided by this invention have been described above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand this invention and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A semi-automatic telescopic mechanism for a clothes drying rack, characterized in that: It includes a main drying rod, a telescopic drying rod, and a first drive assembly mounted on the main unit; The main drying rod has an internal cavity extending along its length. The telescopic drying rod is telescopically installed in the internal cavity and can extend or retract from the end of the main drying rod; A second drive assembly is provided between the main drying rod and the telescopic drying rod; The first drive assembly has a first docking component exposed from the main unit; the second drive assembly has a second docking component exposed from the main drying rod; When the main drying rod rises to the lower side of the main unit, the first docking component docks with the second docking component, and the first drive component drives the second drive component to control the extension or retraction of the telescopic drying rod; When the main drying rod is separated from the main unit, the first docking component is separated from the second docking component, and the telescopic drying rod can extend or retract relative to the main drying rod under the action of external force.

2. The semi-automatic telescopic mechanism for the drying rack according to claim 1, characterized in that: The second drive assembly is a lead screw drive assembly, including a lead screw disposed in the internal space along the length direction of the main drying rod, and a lead screw nut disposed on the lead screw; The inner end of the telescopic drying rod is connected to the lead screw nut; The second docking component is fixed to the lead screw; when the first docking component docks with the second docking component, the first drive assembly drives the second docking component to drive the lead screw to rotate circumferentially, and the lead screw nut moves back and forth along the lead screw to drive the telescopic drying rod to extend or retract. When the first docking component separates from the second docking component, the telescopic drying rod extends or retracts relative to the main drying rod under the action of external force, and the lead screw passively rotates circumferentially as the lead screw nut moves back and forth.

3. The semi-automatic telescopic mechanism for the drying rack according to claim 2, characterized in that: The first drive assembly includes a motor and a drive gear set for mounting on the main unit, wherein the first end gear of the drive gear set meshes with the output shaft of the motor, and the first mating component is the end gear of the drive gear set; The second docking component is a lead screw gear, which meshes with the end gear of the drive gear set; the lead screw gear is circumferentially fixed to the lead screw.

4. The semi-automatic telescopic mechanism for the drying rack according to claim 2, characterized in that: A telescopic drying rod is provided at each end of the main drying rod; The lead screw is a bidirectional lead screw, the second docking component is disposed in the middle of the bidirectional lead screw, the thread direction of the bidirectional lead screw is symmetrically arranged bidirectionally with the second docking component as the center of symmetry, and the two telescopic drying rods and the lead screw nuts at their inner ends are symmetrically disposed at both ends of the bidirectional lead screw with the second docking component as the center of symmetry. When the bidirectional lead screw is driven to rotate circumferentially, the two telescopic drying rods extend or retract synchronously and symmetrically from both ends of the main drying rod; when the first docking component separates from the second docking component, the telescopic drying rod at one end extends or retracts relative to the main drying rod under the action of external force, and the telescopic drying rod at the other end extends or retracts synchronously and symmetrically from both ends of the main drying rod.

5. The semi-automatic telescopic mechanism for the drying rack according to claim 2, characterized in that: The inner end of the telescopic drying rod is provided with an end cap, which is fixedly connected to the lead screw nut; The telescopic drying rod is provided with a handle at its outer end so that an external force can be applied to extend or retract the telescopic drying rod.

6. The semi-automatic telescopic mechanism for a drying rack according to claim 2, characterized in that: The main drying rod is equipped with a screw fixing seat inside; The lead screw fixing seat includes a base, an annular limiting part disposed on the base, and a fastening part at the upper end of the annular limiting part; The base is placed at the bottom of the main drying rod, and the fastening part is fastened to the top of the main drying rod; the lead screw can rotatably pass through the annular limiting part.

7. The semi-automatic telescopic mechanism for a drying rack according to claim 1, characterized in that: It includes a combination of two sets of main drying rods located on both sides of the main unit, the telescopic drying rods, and the second drive assembly; It also includes two sets of the first drive components located on both sides of the main unit; each set of the first drive components can operate independently to drive the second drive components on both sides independently.

8. The semi-automatic telescopic mechanism for a drying rack according to claim 3, characterized in that: The drive gear set shown includes two meshing drive gears, namely the first end gear and the last end gear; A second parasol wheel is provided on one side of the first end gear, and a first parasol wheel is provided on the output shaft of the motor; the first parasol wheel meshes with the second parasol wheel.

9. A clothes drying rack, characterized in that: It includes a main unit, a lifting assembly, and a drying rod assembly, and is equipped with a semi-automatic telescopic mechanism for the drying rod as described in any one of claims 1-8; The host component has a host housing, and the first drive component is disposed inside the host housing; A docking window is provided on the lower side of the main unit housing, and the first docking component is exposed from the docking window; The drying rack assembly includes the main drying rack, the telescopic drying rack, and the second drive assembly.

10. A method for controlling the extension and retraction of a drying pole, characterized in that: Its controlled object is the semi-automatic telescopic mechanism of the drying rack; It includes a main drying rod, a telescopic drying rod, and a first drive assembly mounted on the main unit; The main drying rod has an internal cavity extending along its length. The telescopic drying rod is telescopically installed in the internal cavity and can extend or retract from the end of the main drying rod; A second drive assembly is provided between the main drying rod and the telescopic drying rod; The first drive assembly has a first docking component exposed from the main unit; the second drive assembly has a second docking component exposed from the main drying rod; Specifically, the steps include the following: When the main drying rod rises to the lower side of the main unit, the first docking component docks with the second docking component, and the first drive component drives the second drive component to control the extension or retraction of the telescopic drying rod; When the main drying rod is separated from the main unit, the first docking component is separated from the second docking component, and the telescopic drying rod can extend or retract relative to the main drying rod under the action of external force.

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