An upper limit control system of a single-pole clothes drying machine

Abstract

This utility model discloses an upper limit control system for a single-pole clothes drying rack, including a main housing, a drying rod, a micro switch, and a triggering device. The micro switch is fastened to the inside of the main housing by screws, with its trigger button facing inward and electrically connected to the controller. It can transmit a trigger signal to the controller to control the start and stop of the clothes drying rack's drive motor. The triggering device includes a cover and a trigger element. The cover is detachably installed on the upper surface of the panel, and its interior forms a vertically penetrating guide cavity. The trigger element is fitted through the guide cavity of the cover and can move up and down along the axis of the guide cavity. The lower end of the trigger element extends through the panel to the outside of the main housing, while the upper end is located inside the main housing and corresponds to the trigger button of the micro switch. This effectively avoids the problem of the drying rod rising excessively and causing pressure or damage to the top panel of the clothes drying rack, and also prevents the drying rod from failing to rise to a sufficient height due to inaccurate control.

Description

Technical Field

[0001] This utility model relates to a control system for a clothes drying rack, and more particularly to an upper limit control system for a single-pole clothes drying rack. Background Technology

[0002] Most single-pole clothes drying racks on the market today are equipped with an upper limit control system. This system is mainly integrated into the drive unit of the drying rack. Its working principle is to precisely monitor the length of the steel wire rope as it is extended or retracted, and use this as a basis to set the stopping time of the motor. Specifically, as the steel wire rope is gradually extended or retracted with the rotation of the motor, when it reaches a preset specific length value, the system will issue a command to stop the motor, thereby ensuring that the drying rod can be stably stopped at the appropriate height.

[0003] For example, the automatic clothes drying rack upper limit structure mentioned in patent document CN201721094620 relies on the winding wheel pressing the contact point to send a signal to the motor, thereby stopping the motor. Specifically, as the steel wire rope is gradually released or retracted with the rotation of the motor, when it reaches a preset specific length value, the system will issue a command to stop the motor, thus ensuring that the drying rack can be stably stopped at the appropriate height.

[0004] However, existing upper limit control systems have some significant drawbacks in practical use. Due to limitations in the system's accuracy in measuring the wire rope length and the precision of motor control, two undesirable situations may occur when the clothes drying rod reaches its upper limit. Firstly, the drying rod may rise excessively due to system control deviations, potentially squeezing the top panel of the clothes dryer. Over time, this can damage the panel, affecting the overall aesthetics of the clothes dryer, and may also damage its internal structure, shortening its lifespan. Secondly, the drying rod may fail to rise to a sufficient height due to inaccurate control, resulting in an excessive gap between the rod and the panel. This not only affects the overall stability of the clothes dryer but may also cause clothes to easily come into contact with surrounding objects while drying, inconveniencing the user. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an upper limit control system for a single-pole clothes drying rack; it achieves the upper limit of the drying rack by raising the drying rod to press against the trigger element to touch the micro switch, thereby stopping the motor and realizing the upper limit of the drying rod.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is: an upper limit control system for a single-pole clothes drying rack.

[0007] Includes the main unit housing, the drying pole pulled by the steel wire rope, the micro switch and triggering device connected to the controller;

[0008] The main unit housing is a hollow frame structure, specifically including a panel for sealing the bottom, a top plate for covering the top, a front plate and a rear plate for sealing the front and rear sides respectively, and two side end plates symmetrically arranged on the left and right sides. Each plate is fixedly connected by bolts or buckles to form a closed cavity.

[0009] The micro switch is fastened to the side wall of one of the side end plates by screws. Its trigger button faces the inside of the main housing and is electrically connected to the controller. It can transmit the trigger signal to the controller to control the start and stop of the clothes drying rack drive motor.

[0010] The triggering device includes an inverted U-shaped cover and a columnar trigger element. The cover is detachably mounted on the upper surface of the panel via a snap-fit ​​structure, and a vertically penetrating guide cavity is formed inside it. The trigger element is adapted to pass through the guide cavity of the cover and can move up and down along the axis of the guide cavity. The lower end of the trigger element extends through the panel to the outside of the main unit housing, while the upper end is located inside the main unit housing and corresponds to the trigger button of the micro switch.

[0011] The trigger can switch between two states: upward triggering and downward disengagement. When the drying rod is in the descending state, the trigger remains in the disengaged state with its lower end extended and its upper end away from the micro switch. When the drying rod rises to the preset upper limit position, the upper surface of the drying rod will abut against the lower end of the trigger and push it upward, causing the upper end of the trigger to press the trigger button of the micro switch. At this time, the trigger is in the triggered state.

[0012] When the trigger is in the triggered state, the micro switch sends a stop signal to the controller, which then cuts off the power to the drive motor, causing the motor to stop running, thus achieving automatic stopping of the drying rack after it rises to the upper limit position.

[0013] A further preferred embodiment of this utility model is: a protruding fixing member is provided on the drying rod, and the lower end of the steel wire rope is connected to the fixing member;

[0014] The fixing element touches the trigger element.

[0015] A further preferred embodiment of this invention is that a spring is disposed between the trigger and the housing.

[0016] A further preferred embodiment of this utility model is as follows: a fixing bracket is provided on the side end plate by screws, and the micro switch is mounted on the fixing bracket.

[0017] A further preferred embodiment of this invention is: a limiting hook is integrally formed on the top outer side of the trigger element, and the limiting hook is limited at the opening of the guide cavity.

[0018] A further preferred embodiment of this utility model is: a base with a columnar protrusion in the middle, the triggering element being provided on the side of the base, and a cover being provided on the base;

[0019] At least a portion of the base protrudes from the panel of the main unit housing to contact the drying rod in its folded state;

[0020] The cover has an outwardly protruding receiving groove in the middle, which corresponds vertically to the columnar protrusion. The upper end of the spring is placed in the receiving groove, and the lower end of the spring is fitted into the columnar protrusion.

[0021] Another preferred subject: an upper limit control system for a single-pole clothes drying rack, comprising a main housing, a drying pole pulled by a steel wire rope, a micro switch and a triggering device connected to a controller;

[0022] The main unit housing is a hollow frame structure;

[0023] The micro switch is fastened to the inside of the main unit housing by screws, with its trigger button facing the inside of the main unit housing and electrically connected to the controller. It can transmit the trigger signal to the controller to control the start and stop of the clothes drying rack drive motor.

[0024] The triggering device includes a cover and a trigger element. The cover is detachably mounted on the upper surface of the panel and has a vertically penetrating guide cavity inside. The trigger element is adapted to pass through the guide cavity of the cover and can move up and down along the axis of the guide cavity. The lower end of the trigger element extends through the panel to the outside of the main unit housing, while the upper end is located inside the main unit housing and corresponds to the trigger button of the micro switch.

[0025] A further preferred embodiment of this utility model is as follows: it includes a base with a columnar protrusion in the middle, and the trigger is provided on the side of the base; at least a portion of the base is exposed on the panel of the main unit housing so as to contact the drying rod in the storage state.

[0026] The trigger can switch between two states: upward triggering and downward disengagement. When the drying rod is in the descending state, the trigger remains in the disengaged state with its lower end extended and its upper end away from the micro switch. When the drying rod rises to the preset upper limit position, the upper surface of the drying rod will abut against the lower end of the trigger and push it upward, causing the upper end of the trigger to press the trigger button of the micro switch. At this time, the trigger is in the triggered state.

[0027] When the trigger is in the triggered state, the micro switch sends a stop signal to the controller, which then cuts off the power to the drive motor, causing the motor to stop running, thus achieving automatic stopping of the drying rack after it rises to the upper limit position.

[0028] A further preferred embodiment of this utility model is as follows: a protruding fixing member is provided on the drying rod, and the lower end of the steel wire rope is connected to the fixing member; the fixing member touches the trigger member.

[0029] A further preferred embodiment of this utility model is that a spring is disposed between the trigger and the housing.

[0030] Compared with the prior art, the advantages of this utility model are: the upper limit control system of this single-pole clothes drying rack achieves precise control of the drying rod position through a unique triggering device. When the drying rod rises to the preset upper limit position, the upper surface of the drying rod will abut against the lower end of the triggering element and push it upward, causing the upper end of the triggering element to press the trigger button of the micro switch, thereby sending a stop signal to the controller, cutting off the power to the drive motor, and stopping the motor from running.

[0031] This technology effectively prevents the clothes drying rod from rising excessively and causing pressure or damage to the top panel of the clothes drying rack. It also prevents the drying rod from failing to rise to a sufficient height due to inaccurate control, which could lead to excessive gaps between the drying rod and the panel. By precisely controlling the distance between the drying rod and the main unit panel, this system significantly improves the safety and reliability of the clothes drying rack and extends its service life.

[0032] Furthermore, the main unit housing is composed of multiple plates connected by bolts or clips to form a closed cavity. This structure is not only robust but also facilitates disassembly and assembly. The trigger device's cover is detachably mounted to the upper surface of the panel via a clip structure, making the installation and replacement of the trigger device more convenient and quick. The microswitch is fastened to the side wall of the side plate with screws, a mounting method that is not only secure but also facilitates adjustment and maintenance. Through these technical means, this system greatly simplifies the installation and maintenance process, reduces user costs, and improves the user experience. Attached Figure Description

[0033] 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 present 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.

[0034] Figure 1 This is a schematic diagram of the overall structure of the upper limit control system;

[0035] Figure 2 This is a partial structural diagram of the upper limit control system;

[0036] Figure 3This is a side view showing the upper limit control system not being triggered.

[0037] Figure 4 A side view of the upper limit control system triggering;

[0038] Figure 5 This is a schematic diagram of a micro switch and triggering device.

[0039] Figure 6 This is a schematic diagram of the overall structure of the triggering device in this embodiment;

[0040] Figure 7 This is a structural disassembly diagram of the triggering device in this embodiment;

[0041] Figure 8 This is a schematic diagram of the triggering device and the mounting bracket in this embodiment;

[0042] Figure 9 This is an example. Figure 3 A magnified view of a section at point A in the middle;

[0043] Figure 10 This is an example. Figure 4 A magnified view of a section at point B in the middle. Detailed Implementation

[0044] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0045] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0046] like Figures 1 to 4 As shown, an upper limit control system 100 for a single-pole clothes drying rack includes a main housing 10, a drying pole 20 pulled by a steel wire rope s, a micro switch 30 connected to a controller, and a triggering device 40. The main housing 10 serves as the main frame of the entire clothes drying rack, and its interior is hollow, forming a closed cavity. The main housing 10 consists of several parts, including a panel 11 for sealing the bottom, a top plate 12 for covering the top, a front plate 13 and a rear plate 14 for sealing the front and rear sides respectively, and two side end plates 15 symmetrically arranged on the left and right sides. These plates are fixedly connected by bolts or clips, ensuring the overall structural stability of the main housing 10 and providing a stable mounting base for other components of the clothes drying rack.

[0047] The drying rod 20 is used for hanging clothes to dry. The drying rod 20 is pulled by a steel wire rope s and can rise and fall under the control of the main housing 10, allowing the user to easily adjust the height of the drying rod as needed.

[0048] Triggering device 40 is the core component of this system for implementing upper limit control, and its structure is as follows: Figure 6 and Figure 7 As shown. The triggering device 40 includes an inverted U-shaped housing 41 and a columnar trigger element 42. The housing 41 is detachably mounted on the upper surface of the panel 11 via a snap-fit ​​structure f, which facilitates installation and maintenance. A vertically penetrating guide cavity h is formed inside the housing 41 to guide the vertical movement of the trigger element 42. The trigger element 42 is fitted into the guide cavity h of the housing 41 and can move up and down along the axis of the guide cavity h. The lower end of the trigger element 42 extends through the panel 11 to the outside of the main housing 10, while the upper end is located inside the main housing 10 and corresponds to the trigger button 31 of the micro switch 30.

[0049] like Figure 9 and Figure 10 As shown, the trigger 42 can switch between two states: upward triggering and downward disengagement. The specific working process is as follows:

[0050] In the untriggered state, when the drying rod 20 is in the lowered state, the trigger 42 remains in a disengaged state with its lower end extended and its upper end away from the micro switch 30. At this time, the lower end of the trigger 42 is located outside the main housing 10, waiting for the drying rod 20 to rise.

[0051] In the triggered state, when the drying rod 20 rises to the preset upper limit position, the upper surface of the drying rod 20 will abut against the lower end of the trigger member 42 and push it upward. As the trigger member 42 moves upward, its upper end will press the trigger button 31 of the micro switch 30, causing the micro switch 30 to be in the triggered state. At this time, the micro switch 30 sends a stop signal to the controller, and the controller immediately cuts off the power to the drive motor, causing the motor to stop running, thereby achieving automatic stopping of the drying rod 20 after it rises to the upper limit position.

[0052] To further optimize the structure and performance of the triggering device 40, such as Figure 6 and Figure 7 As shown, the triggering device 40 also includes a base 80 with a columnar protrusion 81 in the middle. A trigger member 42 is provided on the side of the base 80, and at least a portion of the base 80 protrudes from the panel 11 of the main housing 10 so that it can contact the drying rod 20 when it is in the retracted state. This not only provides stable support for the trigger member 42, but also ensures that the drying rod 20 can accurately contact the trigger member 42 and trigger the micro switch 30 during the rising process.

[0053] In addition, such as Figure 6 and Figure 7 As shown, the housing 41 has an outwardly protruding receiving groove 411 in the middle, which corresponds vertically to the columnar protrusion 81. A spring 43 is disposed between the trigger 42 and the housing 41. Specifically, the upper end of the spring 43 is inserted into the receiving groove 411, and the lower end is fitted into the columnar protrusion 81. The spring 43 provides elastic cushioning for the trigger 42, enabling the trigger 42 to remain stable in the untriggered state and to smoothly reset after triggering. This elastic design not only improves the reliability of the system but also extends the service life of the triggering device 40.

[0054] Based on the above technical solution, the single-pole clothes drying rack upper limit control system 100 of this utility model achieves the automatic stop function after the drying rod 20 rises to the upper limit position through a unique trigger device setting. This system has a simple structure and reliable performance, effectively avoiding problems such as the drying rod 20 pressing against the panel or excessive gaps, thus improving the user experience and service life of the clothes drying rack. At the same time, through the optimized design of structures such as the spring 43 and the base 80, the stability and reliability of the system are further improved, making it an ideal upper limit control solution for clothes drying racks.

[0055] Preferably, a limiting hook r is integrally formed on the top outer side of the trigger member 42, and the limiting hook r is limited at the opening of the guide cavity h. By integrally forming the limiting hook r on the top outer side of the trigger member 42 and limiting the limiting hook r at the opening of the guide cavity h, the trigger member 42 can be effectively prevented from falling out of the guide cavity h during movement.

[0056] In addition, such as Figure 1 As shown, a protruding fixing member 50 is provided on the drying rod 20, and the lower end of the steel wire rope s is connected to the fixing member 50; the fixing member 50 touches the trigger member 42. During the rising process of the drying rod 20, the fixing member 50 moves together with the drying rod 20. When the drying rod 20 rises to the preset upper limit position, the fixing member 50 will touch the lower end of the trigger member 42. This physical contact is the key step in triggering the upper limit control. After being pushed by the fixing member 50, the trigger member 42 will move upward along the guide cavity h, thereby pressing the trigger button 31 of the micro switch 30, thus realizing the upper limit control.

[0057] More preferably, a mounting bracket 60 is provided on the side end plate 15 by screws, and the micro switch 30 is mounted on the mounting bracket 60. The mounting bracket 60 provides additional support for the micro switch 30, enabling it to remain stable during the operation of the clothes dryer and reducing loosening or damage caused by vibration or impact.

[0058] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0059] This paper introduces the upper limit control system for a single-pole clothes drying rack provided by this utility model. Specific examples are used to illustrate the principle and implementation of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand this utility model and its core ideas. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. An upper limit control system for a single-pole clothes drying rack, characterized in that: Includes the main unit housing, the drying pole pulled by the steel wire rope, the micro switch and triggering device connected to the controller; The main unit housing is a hollow frame structure, specifically including a panel for sealing the bottom, a top plate for covering the top, a front plate and a rear plate for sealing the front and rear sides respectively, and two side end plates symmetrically arranged on the left and right sides. Each plate is fixedly connected by bolts or buckles to form a closed cavity. The micro switch is fastened to the side wall of one of the side end plates by screws. Its trigger button faces the inside of the main housing and is electrically connected to the controller. It can transmit the trigger signal to the controller to control the start and stop of the clothes drying rack drive motor. The triggering device includes an inverted U-shaped cover and a columnar trigger element. The cover is detachably mounted on the upper surface of the panel via a snap-fit ​​structure, and a vertically penetrating guide cavity is formed inside it. The trigger element is adapted to pass through the guide cavity of the cover and can move up and down along the axis of the guide cavity. The lower end of the trigger element extends through the panel to the outside of the main unit housing, while the upper end is located inside the main unit housing and corresponds to the trigger button of the micro switch. The trigger can switch between two states: upward triggering and downward disengagement. When the drying rod is in the descending state, the trigger remains in the disengaged state with its lower end extended and its upper end away from the micro switch. When the drying rod rises to the preset upper limit position, the upper surface of the drying rod will abut against the lower end of the trigger and push it upward, causing the upper end of the trigger to press the trigger button of the micro switch. At this time, the trigger is in the triggered state. When the trigger is in the triggered state, the micro switch sends a stop signal to the controller, which then cuts off the power to the drive motor, causing the motor to stop running, thus achieving automatic stopping of the drying rack after it rises to the upper limit position.

2. The upper limit control system for a single-pole clothes drying rack according to claim 1, characterized in that: The drying rod is provided with a protruding fixing member, and the lower end of the steel wire rope is connected to the fixing member; The fixing element touches the trigger element.

3. The upper limit control system for a single-pole clothes drying rack according to claim 1, characterized in that: A spring is disposed between the trigger and the housing.

4. The upper limit control system for a single-pole clothes drying rack according to claim 1, characterized in that: A mounting bracket is provided on the side end plate by screws, and the micro switch is mounted on the mounting bracket.

5. The upper limit control system for a single-pole clothes drying rack according to claim 1, characterized in that: A limiting hook is integrally formed on the top outer side of the trigger, and the limiting hook is limited at the opening of the guide cavity.

6. The upper limit control system for a single-pole clothes drying rack according to claim 3, characterized in that: It includes a base with a columnar protrusion in the middle, the trigger is provided on the side of the base, and the cover is placed on the base; At least a portion of the base protrudes from the panel of the main unit housing to contact the drying rod in its folded state; The cover has an outwardly protruding receiving groove in the middle, which corresponds vertically to the columnar protrusion. The upper end of the spring is placed in the receiving groove, and the lower end of the spring is fitted into the columnar protrusion.

7. An upper limit control system for a single-pole clothes drying rack, characterized in that: Includes the main unit housing, the drying pole pulled by the steel wire rope, the micro switch and triggering device connected to the controller; The main unit housing is a hollow frame structure; The micro switch is fastened to the inside of the main unit housing by screws, with its trigger button facing the inside of the main unit housing and electrically connected to the controller. It can transmit the trigger signal to the controller to control the start and stop of the clothes drying rack drive motor. The triggering device includes a cover and a trigger element. The cover is detachably mounted on the upper surface of the panel and has a vertically penetrating guide cavity inside. The trigger element is adapted to pass through the guide cavity of the cover and can move up and down along the axis of the guide cavity. The lower end of the trigger element extends through the panel to the outside of the main unit housing, while the upper end is located inside the main unit housing and corresponds to the trigger button of the micro switch.

8. The upper limit control system for a single-pole clothes drying rack according to claim 7, characterized in that: It includes a base with a columnar protrusion in the middle, and the trigger is provided on the side of the base; at least a portion of the base is exposed on the panel of the main unit housing so as to contact the drying rod in the stored state. The trigger can switch between two states: upward triggering and downward disengagement. When the drying rod is in the descending state, the trigger remains in the disengaged state with its lower end extended and its upper end away from the micro switch. When the drying rod rises to the preset upper limit position, the upper surface of the drying rod will abut against the lower end of the trigger and push it upward, causing the upper end of the trigger to press the trigger button of the micro switch. At this time, the trigger is in the triggered state. When the trigger is in the triggered state, the micro switch sends a stop signal to the controller, which then cuts off the power to the drive motor, causing the motor to stop running, thus achieving automatic stopping of the drying rack after it rises to the upper limit position.

9. The upper limit control system for a single-pole clothes drying rack according to claim 7, characterized in that: The drying rod is provided with a protruding fixing member, and the lower end of the steel wire rope is connected to the fixing member; the fixing member touches the trigger member.

10. The upper limit control system for a single-pole clothes drying rack according to claim 7, characterized in that: A spring is disposed between the trigger and the housing.

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