A pull-type resistance controller for a lift drying rack

Abstract

The utility model discloses a pull type resistance type controller for lifting clothes -drying rack belongs to clothes -drying rack technical field, including transmission box, transmission box front part sets up front cover, transmission box rear part sets up the connecting box, the number of transmission box is 2 groups, 2 groups transmission box symmetry sets up, sets up double -shaft motor between transmission box, and the output shaft end of double -shaft motor both sides all sets up worm, rotates and sets up worm wheel in transmission box, and the coaxial setting first gear is set up in worm wheel front part, and the rotation setting second gear is set up in first gear far from double -shaft motor one side, and the coaxial setting third gear is set up in second gear rear part, and the rotation setting fourth gear is set up in third gear far from double -shaft motor one side, and the fixed setting winding wheel is set up in fourth gear rear part, and the wire is set up and is hung in winding wheel surface winding, and second gear is engaged with first gear, and fourth gear is engaged with third gear, the utility model discloses effectively guaranteed to double -shaft motor's speed -reducing effect, effectively guaranteed when clothes -drying rack ascending resistance unexpected increase's timely pause.

Description

Technical Field

[0001] This utility model relates to the field of clothes drying rack technology, specifically a pull-type resistance controller for raising and lowering clothes drying racks. Background Technology

[0002] Retractable clothes drying racks are common drying devices in modern homes, mainly divided into hand-cranked and electric types. During the raising and lowering process, the hanging cord needs to be extended and retracted. The most direct design approach is to use a motor to drive the reel. However, motor speeds are generally high and difficult to control. To solve this problem, technicians introduced gear sets into the transmission system to reduce speed. The transmission system is located inside a transmission box. The small size of the transmission box limits the number and diameter of the gears, thus limiting the speed reduction effect. This results in the clothes drying rack's raising and lowering process being completed quickly. During the upward movement, unexpected situations may occur, such as clothes getting caught on foreign objects, increasing the upward resistance. If the upward movement is not stopped in time, the hanging cord may wear out or even break. However, the combined effect of the rising speed and the reaction time required for the user to stop the motor after discovering the problem still greatly increases the risk of hanging cord breakage. Therefore, how to effectively reduce the speed of the clothes drying rack's motor and promptly stop the upward movement when the upward resistance unexpectedly increases has become an increasingly urgent problem for relevant technicians. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a pull-type resistance controller for raising and lowering clothes racks.

[0004] A pull-type obstacle detection controller for raising and lowering clothes racks includes a transmission box, characterized in that: a front cover is provided at the front of the transmission box, a connecting box is provided at the rear of the transmission box, there are two sets of transmission boxes, the two sets of transmission boxes are symmetrically arranged, a dual-axis motor is provided between the transmission boxes, worm gears are provided at the ends of the output shafts on both sides of the dual-axis motor, a worm wheel is rotatably provided inside the transmission box, a first gear is coaxially provided at the front of the worm wheel, a second gear is rotatably provided on the side of the first gear away from the dual-axis motor, a third gear is coaxially provided at the rear of the second gear, a fourth gear is rotatably provided on the side of the third gear away from the dual-axis motor, a winding wheel is fixedly provided at the rear of the fourth gear, a suspension wire is wound on the surface of the winding wheel, the worm wheel is meshed with the worm, the second gear is meshed with the first gear, and the fourth gear is meshed with the third gear.

[0005] Furthermore, the diameter of the first gear is smaller than the diameter of the second gear, the diameter of the second gear is larger than the diameter of the third gear, and the diameter of the third gear is smaller than the diameter of the fourth gear.

[0006] Furthermore, a feedback box is provided on the side of the transmission box away from the dual-axis motor. A rotator is provided inside the feedback box. A rotating shaft is provided on the end of the rotator away from the dual-axis motor. The free end of the suspension wire passes around the rotating shaft and leads out of the feedback box.

[0007] Furthermore, a sensor is installed inside the feedback box and above the rotator, with a sensing part installed below the sensor. A fixed shaft is installed inside the feedback box. A sleeve hole is installed at one end of the rotator near the dual-axis motor, and the sleeve hole is rotatably connected to the fixed shaft. A blocking part is installed on the upper part of the rotator near the sleeve hole. A torsion spring is fitted on the surface of the fixed shaft, with both ends of the torsion spring contacting the lower surface of the middle part of the rotator and the top of the feedback box, respectively. When the torsion spring is in its natural state, the blocking part is located directly below the sensing part.

[0008] The beneficial effects of this utility model of a pull-type obstacle detection controller for lifting clothes racks are as follows:

[0009] 1. A third gear is coaxially arranged at the rear of the second gear. The second gear meshes with the first gear, and the fourth gear meshes with the third gear. This makes full use of the small space inside the transmission box. Combined with the fact that the diameter of the first gear is smaller than the diameter of the second gear and the diameter of the third gear is smaller than the diameter of the fourth gear, it effectively achieves secondary speed reduction of the output speed of the dual-shaft motor, ensuring the speed reduction effect.

[0010] 2. When the clothes rack is rising normally, the torsion spring is in its natural state. In case of an accident such as clothes getting caught on a foreign object, the suspension line pulls the rotator to rotate downward around the fixed axis, so that the obstruction part is away from the sensing part. Then the sensor can transmit this signal to the matching control board, and the control board can shut down the dual-axis motor according to the preset setting to stop the clothes rack from rising. This well meets the usage requirement of "stopping the clothes rack from rising in time when the resistance to rising unexpectedly increases". Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0012] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0014] Figure 3 This is an enlarged structural schematic diagram (I) of the transmission part of this utility model;

[0015] Figure 4This is an enlarged structural schematic diagram (II) of the transmission part of this utility model;

[0016] Figure 5 This is an enlarged structural schematic diagram of the sensor and rotator of this utility model.

[0017] Among them, 1-front cover, 2-transmission box, 3-connecting box, 4-dual-axis motor, 5-feedback box, 6-worm gear, 7-first gear, 8-second gear, 9-fourth gear, 10-sensor, 11-fixed shaft, 12-rotator, 13-winding wheel, 14-third gear, 15-worm gear, 16-sensing part, 17-shielding part, 18-sleeve hole, 19-rotating shaft. Detailed Implementation

[0018] To make the explanation clearer, the present invention provides a further description of a pull-type resistance controller for raising and lowering clothes racks, in conjunction with the accompanying drawings.

[0019] A pull-type obstacle detection controller for raising and lowering clothes racks includes a transmission box 2, characterized in that: a front cover 1 is provided at the front of the transmission box 2, a connecting box 3 is provided at the rear of the transmission box 2, the number of transmission boxes 2 is two sets, the two sets of transmission boxes 2 are symmetrically arranged, a dual-axis motor 4 is provided between the transmission boxes 2, worm gears 6 are provided at the ends of the output shafts on both sides of the dual-axis motor 4, a worm wheel 15 is rotatably provided inside the transmission box 2, a first gear 7 is coaxially provided at the front of the worm wheel 15, a second gear 8 is rotatably provided on the side of the first gear 7 away from the dual-axis motor 4, a third gear 14 is coaxially provided at the rear of the second gear 8, a fourth gear 9 is rotatably provided on the side of the third gear 14 away from the dual-axis motor 4, a winding wheel 13 is fixedly provided at the rear of the fourth gear 9, a hanging line is wound on the surface of the winding wheel 13, the worm wheel 15 is meshed with the worm gear 6, the second gear 8 is meshed with the first gear 7, and the fourth gear 9 is meshed with the third gear 14.

[0020] Furthermore, the diameter of the first gear 7 is smaller than the diameter of the second gear 8, the diameter of the second gear 8 is larger than the diameter of the third gear 14, and the diameter of the third gear 14 is smaller than the diameter of the fourth gear 9.

[0021] Furthermore, a feedback box 5 is provided on the side of the transmission box 2 away from the dual-axis motor 4. A rotator 12 is provided inside the feedback box 5. A rotating shaft 19 is provided on the end of the rotator 12 away from the dual-axis motor 4. The free end of the suspension wire passes around the rotating shaft 19 and is led out of the feedback box 5.

[0022] Furthermore, a sensor 10 is provided inside the feedback box 5 and above the rotator 12. A sensing part 16 is provided below the sensor 10. A fixed shaft 11 is provided inside the feedback box 5. A sleeve hole 18 is provided at one end of the rotator 12 near the dual-axis motor 4. The sleeve hole 18 is rotatably sleeved with the fixed shaft 11. A blocking part 17 is provided on the upper part of the rotator 12 near the sleeve hole 18. A torsion spring is sleeved on the surface of the fixed shaft 11. The two ends of the torsion spring are respectively in contact with the lower surface of the middle part of the rotator 12 and the feedback box 5. When the torsion spring is in its natural state, the blocking part 17 is located directly below the sensing part 16.

[0023] The working principle of this utility model for a pull-type resistance-sensing controller for raising and lowering clothes racks is as follows: The connecting box 3 is fixed in the installation position, and the free end of the suspension wire from the feedback box 5 is bound to the clothes rack. When the clothes rack needs to rise, the dual-axis motor 4 is started. The output shaft of the dual-axis motor 4 drives the worm gear 6 to rotate, the worm gear 6 drives the worm wheel 15 to rotate, the worm wheel 15 drives the first gear 7 to rotate synchronously, the first gear 7 drives the second gear 8 to rotate, the second gear 8 drives the third gear 14 to rotate synchronously, and the third gear 14 drives the fourth gear 9 to rotate. The transmission from the first gear 7 to the second gear 8 achieves the first speed reduction, and the transmission from the third gear 14 to the fourth gear 9 achieves the second speed reduction. This achieves a secondary speed reduction of the output speed of the dual-axis motor 4 to prevent the clothes rack from rising too quickly. During this process, the torsion spring is in its natural state, and the blocking part 17 is located directly below the sensing part 16. The sensor 10 transmits the position signal of the blocking part 17. The signal is transmitted to the control board, which enables the dual-axis motor 4 to operate stably. During the clothes rack's ascent, if an unexpected situation occurs, such as clothes getting caught on a foreign object, the clothes will inevitably be pulled downwards, increasing the upward resistance of the clothes rack. This will cause the rotator 12 to rotate downwards around the fixed shaft 11 via the suspension line. During this process, the shielding part 17 gradually moves away from the sensing part 16. The sensor 10 transmits the new position signal of the shielding part 17 to the control board, which then stops the dual-axis motor 4 from operating. This stops the clothes rack from rising, preventing the suspension line from wearing out or even breaking. At this time, the torsion spring is in a tightened state. After the unexpected situation is eliminated, the torsion spring returns to its natural state, and the rotator 12 resets. It should be noted that the signal transmission of the sensor 10 and the control of the control board are not described in detail. These are contents that can be set by those skilled in the art during implementation. This solution provides a complete structural basis for the implementation of the control process.

[0024] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A pull-type obstacle detection controller for raising and lowering clothes racks, comprising a transmission box, characterized in that: The transmission box has a front cover at the front and a connecting box at the rear. There are two sets of transmission boxes, symmetrically arranged. A dual-axis motor is installed between the transmission boxes. Worms are installed at the ends of the output shafts on both sides of the dual-axis motor. A worm wheel is rotatably installed inside the transmission box. A first gear is coaxially installed at the front of the worm wheel. A second gear is rotatably installed on the side of the first gear away from the dual-axis motor. A third gear is coaxially installed at the rear of the second gear. A fourth gear is rotatably installed on the side of the third gear away from the dual-axis motor. A winding wheel is fixedly installed at the rear of the fourth gear. A suspension wire is wound on the surface of the winding wheel. The worm wheel meshes with the worm, the second gear meshes with the first gear, and the fourth gear meshes with the third gear.

2. The pull-type obstacle detection controller for raising and lowering clothes racks according to claim 1, characterized in that, The diameter of the first gear is smaller than the diameter of the second gear, the diameter of the second gear is larger than the diameter of the third gear, and the diameter of the third gear is smaller than the diameter of the fourth gear.

3. A pull-type obstacle detection controller for raising and lowering clothes racks according to claim 1, characterized in that, A feedback box is provided on the side of the transmission box away from the dual-axis motor. A rotator is provided inside the feedback box. A rotating shaft is provided on the end of the rotator away from the dual-axis motor. The free end of the suspension wire passes around the rotating shaft and leads out of the feedback box.

4. A pull-type obstacle detection controller for raising and lowering clothes racks according to claim 3, characterized in that, A sensor is installed inside the feedback box and above the rotator. A sensing part is installed below the sensor. A fixed shaft is installed inside the feedback box. A sleeve hole is provided at one end of the rotator near the dual-axis motor. The sleeve hole is rotatably connected to the fixed shaft. A blocking part is provided on the upper part of the rotator near the sleeve hole. A torsion spring is sleeved on the surface of the fixed shaft. The two ends of the torsion spring respectively contact the lower surface of the middle part of the rotator and the top of the feedback box. When the torsion spring is in its natural state, the blocking part is located directly below the sensing part.

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