Descending resistance protection mechanism, power assembly and clothes drying machine

Abstract

The present invention discloses a descent resistance protection mechanism, a power assembly and a clothes drying machine, comprising a first magnetic unit fixed in position, a sliding component connected to a steel wire rope and a Hall switch, wherein the Hall switch comprises a Hall sensing element and a second magnetic unit, and the second magnetic unit is installed on the sliding component; when the steel wire rope is tensioned, a force is applied to the sliding component, and the second magnetic unit maintains a certain distance from the first magnetic unit; when the steel wire rope is slack, the second magnetic unit in the Hall switch causes the sliding component to move under the action of the first magnetic unit, and the Hall sensing element sends a signal to the motor of the winding wheel to stop running after detecting the displacement of the second magnetic unit; the second magnetic unit not only serves as an element in the Hall switch, but also serves as a power source for the sliding component when the steel wire rope is slack; the tension spring is omitted, thereby improving the reliability of the descent resistance operation mechanism.

Description

Technical Field

[0001] The invention relates to a power assembly of a clothes drying machine, and in particular to a protection mechanism when a clothes drying rack of the clothes drying machine encounters resistance during a descending process. Background Art

[0002] The clothes drying machine includes a main unit installed on the ceiling and a clothes drying rack located below the main unit, and the clothes drying rack is connected to the main unit through a steel wire rope. A power assembly is installed in the main unit, and the power assembly includes a motor, a controller and a winding drum for retracting and releasing the steel wire rope. The motor drives the winding drum to rotate to retract and release the steel wire rope, thereby realizing the power mechanism to control the rise or fall of the clothes drying rack.

[0003] When the clothes drying rack of a clothes drying machine is descending, if there is an object or a person under the clothes drying rack, the clothes drying rack will press on the object or the person when it descends; if this problem is not handled, there will be related safety hazards, and the load-bearing wire rope will become loose at this time.

[0004] The clothes drying machine descent resistance protection device with authorization announcement number CN203159961U discloses a pulley for the steel wire rope to pass through, a tension spring acting on the pulley, and a micro switch; when the steel wire rope is slack, the pulley moves under the tension of the tension spring and triggers the micro switch, and the micro switch controls the clothes drying machine to stop working.

[0005] The pull rope obstacle protection mechanism of the automatic clothes drying device with the authorization announcement number CN203977158U discloses a pull rope, a lever and a travel switch. When the pull rope loses tension, the lever triggers the travel switch and controls the winding motor to stop working.

[0006] In the existing descent resistance protection mechanism, when the clothes drying rack encounters resistance during descent, due to the unreasonable arrangement of the wire wheel, it will tilt or shake when its displacement changes, making it difficult to trigger the signal in time and accurately to stop the winding motor from working.

[0007] invention

[0008] The technical problem to be solved by the present invention is to provide a reliable resistance protection mechanism, that is, when the clothes drying rack encounters resistance when descending, the resistance protection mechanism can stop the operation of the winding motor, and further provide a power assembly and clothes drying rack with the above resistance protection structure.

[0009] The technical solution adopted by the present invention to solve the above technical problems is: a descent resistance protection mechanism includes at least one positioning slide groove recessed in the surface of the substrate, a wheel seat with a built-in wire wheel and a trigger switch, and the wire rope is wound around the wire wheel; the wheel seat is located in the positioning slide groove; when the wire rope is slack, the wheel seat moves along a predetermined route in the positioning slide groove and triggers the trigger switch, and the trigger switch sends a signal to the winding motor to stop running.

[0010] A further optimized solution of the present invention is that the trigger switch includes a separate Hall switch or a mechanical micro switch.

[0011] A further optimized solution of the present invention is that the micro switch is arranged on the side of the wheel seat, and when the wire rope is loose, the edge of the moved wheel seat touches the micro switch.

[0012] A further optimization scheme of the present invention is: the magnetic unit in the Hall switch is arranged on the side surface of the wheel seat, the Hall sensing element of the Hall switch is arranged on the control circuit board next to the positioning slide groove, and the Hall sensing element can detect the displacement of the magnetic unit.

[0013] A further optimization scheme of the present invention is: a pressure spring is provided at one end of the wheel seat, and the force exerted by the pressure spring on the wheel seat and the force exerted by the wire rope on the wheel seat through the conductor wheel are offset; when the wire rope is loose, the pressure spring drives the wheel seat to move in the opposite direction.

[0014] A further optimized solution of the present invention is: a pressing portion is provided on the base plate, and the pressing portion confines the wheel seat in the positioning slide groove.

[0015] A further optimized solution of the present invention is that the pressing portion is a pressing plate, and the pressing plate seals the wheel seat in the positioning slot.

[0016] A further optimization scheme of the present invention is: the wheel seat includes a wheel frame, the center of the wheel frame has a cavity for accommodating the wire wheel, at least one of the upper and lower surfaces of the wheel frame is provided with a limiting protrusion, and the lower surface of the pressing portion and at least one of the bottom of the positioning slide groove are provided with an inner concave guide groove that matches the limiting protrusion.

[0017] Another subject of the present invention is: a power assembly of a clothes drying machine, which includes the descent resistance protection mechanism, a motor and a winch assembly, the motor drives the winch assembly, and the wire rope is led out from the winch assembly.

[0018] Another subject of the present invention is: a clothes drying machine, including a main body shell, a clothes drying rack and a power assembly of the clothes drying machine.

[0019] Compared with the prior art, the advantage of the present invention is that the wheel seat with a built-in wire wheel moves according to a predetermined route in the downwardly recessed positioning groove on the substrate and triggers the trigger switch to send a signal to the winding motor to stop running. The sliding path of the wheel seat is limited by the positioning groove, and it is not easy to tilt or shake, and the movement is more stable, so that the signal can be triggered more timely and accurately to stop the winding motor from working, thereby ensuring the safety of the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0021] Figure 1 A three-dimensional diagram of a preferred embodiment of the present invention;

[0022] Figure 2 An exploded view of a preferred embodiment of the present invention;

[0023] Figure 3 The internal schematic diagram of a preferred embodiment of the present invention is Figure 1 ;

[0024] Figure 4 The internal schematic diagram of a preferred embodiment of the present invention is Figure 2 ;

[0025] Figure 5 The internal schematic diagram of a preferred embodiment of the present invention is Figure 3 ;

[0026] Figure 6 An internal exploded view of a preferred embodiment of the present invention;

[0027] Figure 7 The interior of a preferred embodiment of the present invention (the pressing part is not shown) is schematically shown. Figure 1 ;

[0028] Figure 8 The interior of a preferred embodiment of the present invention (the pressing part is not shown) is schematically shown. Figure 2 ;

[0029] Fig. 9 An exploded view of a long motor according to a preferred embodiment of the present invention;

[0030] Fig.10 A schematic diagram of a winch seat according to a preferred embodiment of the present invention;

[0031] Fig.11 A schematic diagram of a guide wheel assembly and a descending resistance protection mechanism according to a preferred embodiment of the present invention;

[0032] Fig.12 It is an enlarged schematic diagram of a guide wheel assembly according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0034] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invented product is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] An intelligent clothes drying machine comprises a main unit component and a clothes drying unit fixedly mounted on the ceiling of an indoor balcony. The clothes drying unit is connected to the main unit component through steel wire ropes respectively arranged at both ends of the main unit component and is hung below the main unit component.

[0038] like Figure 1 As shown, the host component includes a host housing and a power assembly 100 fixedly mounted on the inner surface of an upper base plate of the host housing.

[0039] like Figure 2-4As shown, the layout structure of the power assembly 100 of the clothes drying machine specifically includes a base plate 1 and a winch assembly 2, a winding motor 3, a wire pulley assembly 4 and a control board 5 arranged with electronic components on the base plate 1. The winch assembly 2 is located on one side of the square base plate 1, the wire pulley assembly 4 is arranged at an adjacent position of the winch assembly 2, and the control board 5 is arranged on the other opposite side of the wire pulley assembly 4. The base plate 1 of the power assembly 100 is preferably a plastic base plate to make the main unit lighter. The wire pulley motor 3 drives the winch assembly 2 to retract and release the wire rope, thereby realizing the lifting function of the clothes drying unit.

[0040] like Figure 2 , 4 As shown, the winch assembly 2 includes a winch 01 and a winch seat 02. A housing 7 enclosing the winch 01 is provided on the base plate 1.

[0041] Among them, Figure 4-6 As shown, the capstan 01 is a horizontally placed cylindrical component, including a wire groove section 011 for winding a steel wire rope and a transmission section 012 with an external thread. A wire pressing assembly 6 for pressing the steel wire rope is provided on the outside of the capstan 01. In addition, the winding motor 3 is located at one end of the wire groove section 011 of the capstan 01, which is connected to the long motor 3 of the capstan 01, and the central axis coincides with the central axis of the capstan 01.

[0042] And, if Figure 2-6 As shown in Figures 10, the capstan seat 02 is arranged at one end of the transmission section 012 of the capstan 01. The capstan seat 02 is a vertical frame fixed on the base plate 1, and includes a circular component 021 with a mounting hole 023 at the center and a first fixing ear 022 connected to the base plate 1. The mounting hole 023 has an internal thread that matches the external thread of the transmission section 012. The transmission section 012 of the capstan 01 is inserted into the mounting hole 023 and supported by the capstan seat 02. When the long motor 3 drives the capstan 01 to rotate, the transmission section 012 generates thread displacement in the mounting hole 023.

[0043] like Figure 2-6As shown in Figures 9 and 10, the long motor 3 includes a body 03 and an output shaft 04. The capstan 01 is hollow so that the capstan 01 can be mounted on the body 03 of the long motor 3, and the capstan 01 can rotate relative to the body 03; and the output shaft 04 of the long motor 3 is fixedly engaged with the inner hole of the transmission section 012, so that the output shaft 04 of the long motor 3 can drive the capstan 01 to rotate. Specifically, preferably, the motor output shaft 04 is covered with a capstan shaft 05, and the capstan shaft 05 and the output shaft 04 are connected by a fixing pin 06. The capstan shaft 05 is made of aluminum alloy, and the capstan shaft 05 penetrates from the cavity of the capstan 01 and passes through the transmission section 012. The output shaft 04 of the long motor 3 is fixedly engaged with the inner hole of the transmission section 012 by the capstan shaft 05. The outer wall of the capstan shaft 05 has a plane that matches the inner plane of the inner hole of the transmission section 012, so that the capstan shaft 05 and the inner hole of the transmission section 012 are radially fixed, but can be displaced axially. Therefore, when the output shaft 04 drives the capstan shaft 05 to rotate, the transmission section 012 rotates synchronously with it, and the transmission section 012 generates threaded displacement in the mounting hole 023. The transmission section 012 also performs axial displacement relative to the output shaft 04, so that the wire slot section 011 follows the transmission section 012 to achieve axial displacement.

[0044] It should be understood that the capstan seat 02 is only set up on one side of the transmission section 012 to support the capstan 01 and allow the capstan 01 to move threadedly. The long motor 3 body 03 passes through the capstan 01 to provide another support point for the capstan 01. This saves the space occupied by the motor 3, avoids the power assembly 100 from being too large, reduces the shaft seat for mounting the capstan 01, and simplifies the internal structure.

[0045] Furthermore, the rear end of the fuselage 03 is sleeved with a fixing sleeve 031 that wraps around the outer wall of the fuselage 03, and the front side of the fixing sleeve 031 is integrally formed with a second fixing ear 032 for connecting to the base plate 1. A fixing seat for fixing the winch assembly 2 is formed on the base plate 1, including a first fixing seat 002 and a second fixing seat 003 adapted to the first fixing ear 022 of the winch seat 02 and the second fixing ear 032 of the fixing sleeve 031. The first fixing seat 002 and the second fixing seat 003 are respectively arranged at the edges of both sides of the base plate 1, and the rear section of the fuselage 03 exceeds the edge of the base plate 1, that is, a part of the winch assembly 2 extends out of the edge of the plastic base plate 1.

[0046] like Figure 5 As shown, the two ends of the wire slot section 011 of the winch 01 are respectively provided with a first stopper 013 and a second stopper 014, and the second stopper 014 separates the wire slot section 011 from the transmission section 012. The wire slot section 011 is provided with a first wire slot for winding the first steel wire rope 8 and a second wire slot for winding the second steel wire rope 9 in parallel.

[0047] like Figure 7 , 8As shown, the first steel wire rope 8 and the second steel wire rope 9 are turned by the guide wheel assembly 4 arranged on one side of the winch assembly 2, and extend to both sides of the plastic substrate 1 respectively, so as to be led downward from both sides of the main unit component and connected to the clothes drying component to achieve traction of the clothes drying component.

[0048] like Figure 2 , 7 As shown in Figures 8, 11 and 12, the wire wheel assembly 4 includes two wheel seats 07 with built-in wire wheels 071. The two wheel seats 07 are respectively installed in two downwardly recessed positioning grooves 08 on the plastic substrate 1. The wheel seat 07 can slide linearly in the positioning groove 08 in a direction close to or away from the winch assembly 2. The positioning groove 08 is integrally formed with the substrate 1, and the wheel seat 07 is installed in a sunken manner therein, which saves both cost and space.

[0049] At the same time, a pressing portion 10 is also provided on the plastic substrate 1, and the pressing portion 10 is located above the wheel seat 07 to confine the wheel seat 07 in the positioning slot 08. Thus, the wheel seat 07 is not easy to move up and down in the positioning slot 08 and tilt, making the linear movement more stable. Preferably, the pressing portion 10 is a pressing plate, and the pressing plate seals the wheel seat 07 in the positioning slot 08.

[0050] Specifically, the wheel seat 07 includes a wheel frame 072, the center of which has a cavity for accommodating a wire wheel 071. The first wire rope 8 and the second wire rope 9 are led out from the capstan 01, bypass the wire wheel 071, and make a 90° turn. The wire wheel 071 is provided with a winding groove, in which the wire rope 8 is wound, and the wire rope is prevented from slipping.

[0051] At least one of the upper and lower surfaces of the wheel frame 072 is provided with a limiting protrusion 004, and at least one of the lower surface of the pressing portion 10 and the bottom of the positioning slide groove 08 is provided with an inner concave guide groove 006, 007 that matches the limiting protrusion 004. The inner concave guide grooves 006, 007 reduce the path deviation and swing of the wheel frame 072 during linear motion, so that it can stably slide linearly along the set trajectory, and the moving direction is perpendicular to the moving direction of the capstan 01.

[0052] Preferably, if Figure 2 , 11 As shown in FIG. 12 , a limiting protrusion 004 is provided at the center of the upper surface of the wheel frame 072, and a limiting protrusion is also provided at the center of the lower surface of the wheel frame 072 (not shown in the figure); correspondingly, the lower surface of the pressing portion 10 and the upper surface of the bottom of the positioning slide groove 08 are provided with mutually parallel long strip or elliptical upper concave guide groove 006 and lower concave guide groove 007, wherein the upper concave guide groove 006 can be a through hole.

[0053] like Figure 1 , 2As shown in FIG. 11 , a groove 09 is provided on the plastic substrate 1 beside the guide wheel assembly 4 , and a control board 5 with electronic components arranged thereon for driving the winch assembly 2 is sunken and installed in the groove 09 and is enclosed by a cover 11 on the plastic substrate 1 .

[0054] like Figure 6 , 11 As shown, a trigger switch is also provided in the power assembly 100, which, in combination with the linear sliding guide wheel assembly 4 and the steel wire rope, forms a descending resistance protection mechanism for the clothes drying machine. Because the wheel seat 07 is arranged in the positioning slide groove 08, its sliding path is limited by the positioning slide groove 08, and the concave guide grooves 006 and 007 further guide its direction, the wheel seat 07 slides smoothly and the path is stable, so that the matching trigger switch can trigger the signal more timely and accurately to stop the winding motor 3 from working.

[0055] Specifically, a pressure spring 12 is provided on one side of the wheel frame 072 close to the winch 01. The pressure spring 12 is a cylindrical compression spring with a certain amount of compression. Under normal conditions, the wire rope pulls the clothes drying component and is in a taut state. The wire rope is close to the guide wheel 071, and it exerts a force on the guide wheel 071 in the direction of the winch 01. Under the action of this force, the wheel seat 07 is pulled toward the winch 01, thereby placing the wheel seat 07 on the pressure spring 12; at this moment, the pressure spring 12 produces elastic deformation, and its force on the wheel seat 07 is offset by the force of the wire rope on the wheel seat 07 through the guide wheel, but it has a resilience to restore the deformation. When the clothes drying machine encounters resistance when descending, the tension of the clothes drying component on the wire rope disappears, and the wire rope is in a relaxed state and no longer applies force to the guide wheel 071, so that the load of the guide wheel 071 on the pressure spring 12 disappears, and the pressure spring 12 recovers its deformation. The rebound force stored in its deformation causes the wheel seat 07 to slide in the opposite direction away from the winch 01.

[0056] Furthermore, a trigger switch is arranged on the rear side of the wheel seat 07. When the clothes drying machine encounters resistance when descending, the wheel seat 07 moves away from the winch 01 under the action of the rebound force of the pressure spring 12. The edge of the wheel seat 07 triggers the switch, and the trigger switch sends a signal to the winding motor 3 to stop running.

[0057] Preferably, the trigger switch is a separate Hall switch, and the magnetic unit 131 in the Hall switch is arranged on the outer surface of the rear side of the wheel seat 07. The Hall sensing element 132 of the Hall switch is arranged on the edge of the control circuit board close to the wheel seat 07 and opposite to the magnetic unit 131. After the Hall sensing element 132 detects the displacement of the magnetic unit 131, it sends a signal to the control board 5, prompting the winding motor 3 to stop running.

[0058] More specifically, the magnetic unit 131 in the Hall switch is fixed on a fixing frame 073 protruding backwards on the rear side of the wheel frame 072 .

[0059] In addition, the trigger switch can also be a mechanical micro switch, which is arranged on the control circuit board opposite to the rear side of the wheel seat 07; when the wire rope is loose, the wheel seat 07 moves away from the winch 01, and the edge of the moved wheel seat 07 or the trigger member arranged on its rear side touches the micro switch, which then sends a signal to the control circuit board, prompting the winding motor 3 to stop running, thereby protecting the safety of the user.

[0060] The above is a detailed introduction to the descending resistance protection mechanism, power assembly and clothes drying machine provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. The power assembly of the clothes drying machine is characterized by It includes a descending resistance protection mechanism, a motor and a winch assembly, the motor drives the winch assembly, and the wire rope is led out from the winch assembly; The descending obstacle protection mechanism comprises at least one positioning slide groove recessed in the surface of the substrate, a wheel seat with a built-in guide wheel, and a trigger switch, and the wire rope is wound around the guide wheel; The positioning slide groove is integrally formed with the base plate; the wheel seat is sunken and installed in the positioning slide groove, and can slide linearly in the positioning slide groove in a direction close to or away from the winch assembly; When the wire rope is loose, the wheel seat moves in the positioning slot in a direction away from the winch assembly and triggers the trigger switch, and the trigger switch sends a signal to the winding motor to stop running; A pressure spring is provided at one end of the wheel seat close to the winch assembly, and the force exerted by the pressure spring on the wheel seat is offset by the force exerted by the wire rope on the wheel seat through the guide wheel; when the wire rope is slack, the rebound force of the pressure spring drives the wheel seat to move in the opposite direction away from the winch assembly; A pressing portion is provided on the base plate, and the pressing portion limits the wheel seat in the positioning slide groove; The lower pressing part is a lower pressing plate, and the lower pressing plate seals the wheel seat in the positioning slide groove; The wheel seat comprises a wheel frame, the center of the wheel frame has a cavity for accommodating the guide wheel, the centers of the upper and lower surfaces of the wheel frame are provided with limiting protrusions, the lower surface of the pressing portion and the upper surface of the bottom of the positioning slide groove are provided with upper and lower concave guide grooves and long strips or elliptical guide grooves that are consistent with the limiting protrusions and parallel to each other; The trigger switch comprises a separate Hall switch; The magnetic unit in the Hall switch is arranged on the side surface of the wheel seat, and the Hall sensing element of the Hall switch is arranged on the control circuit board beside the positioning slide slot. The Hall sensing element can detect the displacement of the magnetic unit.

2. Clothes drying machine, characterized in that It comprises a main body shell, a clothes drying rack and a power assembly of the clothes drying machine as claimed in claim 1.

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