Dual-motor sub-control type electric shutter driving mechanism

Abstract

The utility model discloses a double-motor sub-control type electric shutter driving mechanism, which belongs to the technical field of electric shutters and comprises a turnover motor, a lifting motor, a turnover shaft, a lifting shaft, a double-shaft seat and a mechanical-electrical interlocking limiting device, the turnover shaft and the lifting shaft are arranged in parallel, and the double-shaft seat is fixed in a top frame of a shutter body through an L-shaped mounting seat. The turning wheel and the lifting winding reel are in key connection respectively, so that an independent transmission path of the lifting rope and the turning rope is realized; the limiting device comprises a rectangular frame, an overturning / lifting threaded shaft barrel penetrating through the rectangular frame, a control block in threaded sleeving connection and a guide groove type limiting switch set, and a corresponding limiting switch is triggered through sliding of an overturning protruding block and a lifting protruding block along a guide groove, so that a motor driving signal is directly cut off. Through the double-motor time-sharing control logic and the thread pair linkage limiting design, rope abrasion and unexpected displacement caused by action coupling are thoroughly eliminated, the positioning precision reaches + / -0.05 mm, meanwhile, the standby energy consumption is reduced by 62%, and the device is suitable for high-rise buildings and intelligent home scenes.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric shutter technical field especially relates to a double motor sub -control formula electric shutter drive mechanism. BACKGROUND

[0002] Traditional electric shutter adopts single motor drive structure, controls the lifting and turning action of the blade through worm gear transmission system simultaneously. In this kind of design, lifting rope and turning rope need synchronous action because of motion coupling, which leads to the turning rope bearing repeated friction load in the adjustment process, especially in high-rise building, because the blade is heavy, the rope wear rate is significantly intensified, which seriously affects the service life.

[0003] To alleviate the above problems, part of the improved product adopts mechanical clutch mechanism to realize action separation. However, such clutch mechanism will produce mechanical wear in the process of frequent engagement and separation, which leads to the gradual deterioration of transmission accuracy with the use time. In addition, due to the inherent hysteresis characteristics of mechanical structure, millimeter level unintended lifting displacement will still occur during the turning of the shutter, which affects the optical consistency and air tightness of the building facade. More importantly, the existing clutch device needs to maintain the normally closed state to keep the blade position, which leads to the long-term idle state of the driving motor, causing additional energy loss.

[0004] There is also an integrated scheme of single motor combined with winding device in the prior art, which realizes the turning and lifting of the blade through a single motor. However, such design still cannot completely decouple the motion trajectory, and when the load changes suddenly, the action will be out of sync due to insufficient motor power, further aggravating the wear of the rope. In addition, due to the physical coupling of the transmission path, micro displacement will still occur when the blade turns, affecting the positioning accuracy.

[0005] The above technical bottleneck shows that the traditional single motor drive architecture cannot fundamentally solve the wear and energy consumption problems caused by action coupling, and an innovative design is needed that can completely separate the lifting and turning motion, eliminate unintended displacement and not increase the total power consumption of the system. INVENTION CONTENTS

[0006] The utility model aims at providing a double motor sub -control formula electric shutter drive mechanism, through setting up the limit switch system of independent control lifting motor and turning motor, combining the switch control block of follow-up trigger on screw rod, realizes the strict time-sharing start and stop control of double motor, to solve the technical problem of rope wear, blade unintended displacement and power consumption surge of double motor parallel operation caused by traditional single motor coupling transmission.

[0007] The technical scheme adopted by the utility model to solve its technical problems is:

[0008] A double-motor separate control type electric shutter driving mechanism, comprising a turnover motor, a lifting motor, parallel arranged turnover shaft and lifting shaft, double shaft base and limiting device;

[0009] The double shaft base comprises: a plurality of equidistantly arranged mounting seats arranged in the window top frame, each mounting seat being divided into a turnover wheel connected with the turnover shaft by a key and a lifting winding drum connected with the lifting shaft by a key;

[0010] The limiting device comprises:

[0011] A rectangular frame arranged in the window top frame;

[0012] A turnover threaded shaft cylinder and a lifting threaded shaft cylinder penetrating through the rectangular frame and being connected with the turnover shaft and the lifting shaft by a key respectively;

[0013] A turnover control block threadedly sleeved on the turnover threaded shaft cylinder, which is integrally formed with a turnover limiting sleeve and a turnover protrusion;

[0014] A lifting control block threadedly sleeved on the lifting threaded shaft cylinder, which is integrally formed with a lifting limiting sleeve and a lifting protrusion;

[0015] A turnover protrusion guide groove arranged in the inner wall of the top of the rectangular frame, and first and second turnover limiting switches arranged at two ends of the turnover protrusion guide groove;

[0016] A lifting protrusion guide groove arranged in the inner wall of the bottom of the rectangular frame, and a first lifting limiting switch arranged at one end of the lifting protrusion guide groove; and a second lifting limiting switch fixed to the bottom surface of the window top frame;

[0017] The turnover protrusion is slidingly limited in the turnover protrusion guide groove, and the lifting protrusion is slidingly limited in the lifting protrusion guide groove;

[0018] The turnover motor is connected with the turnover shaft, and the contacts of the first and second turnover limiting switches are arranged in two independent control branches of the turnover motor; the disconnection of any contact directly cuts off the power supply of the turnover motor;

[0019] The lifting motor is connected with the lifting shaft, and the contacts of the first and second lifting limiting switches are arranged in two independent control branches of the lifting motor; the disconnection of any contact directly cuts off the power supply of the lifting motor.

[0020] In a further preferred technical solution, the mounting seat is in the shape of L as a whole, the top of the vertical surface of the mounting seat is provided with a turnover wheel groove, the bottom of the vertical surface of the mounting seat is provided with a turnover rope hole and a lifting rope hole; the top of the horizontal surface of the mounting seat is provided with a winding drum groove, and the side surface adjacent to the vertical surface of the mounting seat is provided with a lifting rope opening.

[0021] In a further preferred technical solution, the contacts of the first and second turnover limiting switches correspond to the position of the turnover protrusion.

[0022] Further preferred technical solutions, the contact of the first lifting limit switch corresponds to the position of the lifting block.

[0023] Further preferred technical solutions, the flip motor and the lifting motor are arranged in parallel in the motor housing.

[0024] The beneficial effects of the present application are:

[0025] The present application realizes the following significant technical advantages in the field of electric shutter driving through the collaborative innovation of the dual-motor sub-control architecture and the mechanical-electrical interlocking limit system:

[0026] 1. Action decoupling and rope life improvement

[0027] The sub-control design of independent control of lifting motor and flip motor completely eliminates the rope cross-friction problem caused by motion coupling in traditional single motor systems.

[0028] The rope wear rate under traditional single motor driving is increased by 3-5 times due to synchronous action, while the present scheme uses dual-shaft independent transmission path, for example: the flip wheel and the lifting winding drum are separately arranged in the dual-shaft shaft seat, so that the stress direction of the lifting rope and the flip rope is orthogonal, the friction contact area is reduced by more than 80%, and the action decoupling can prolong the service life of the transmission components by 2.3 times.

[0029] 2. Micro-displacement elimination and positioning accuracy enhancement

[0030] Through the threaded rod limit system, for example: flip / lifting threaded shaft cylinder and control block threaded sleeve, hard mechanical limit is realized, combined with the contact independent control logic of the dual-limit switch, for example: the first and second flip limit switches are separately arranged in independent control branches, completely eliminating unintended displacement during blade action.

[0031] The 0.5-1.2mm displacement error caused by the transmission gap of the traditional clutch mechanism can be compressed to within ±0.05mm based on the axial positioning accuracy of the threaded pair in the present scheme.

[0032] 3. Energy consumption optimization and system reliability enhancement

[0033] Dual-motor time-sharing start-stop control strategy, for example: directly cutting off the driving signal through the limit switch contact, avoiding the no-load loss caused by the constant closed state of the traditional clutch mechanism.

[0034] Dual-motor is only powered during action, which reduces standby energy consumption by 62% compared to single motor + clutch structure, and independent control branch design, for example: two control branches of the flip motor, can prevent redundant power consumption caused by accidental triggering.

[0035] The screw thread control block and the guide groove sliding limiting mechanism, for example, the turnover protrusion guide groove and the lifting protrusion guide groove, form double redundancy protection, and the system failure rate is reduced by 40% than the traditional worm gear transmission.

[0036] The motor power required for completing the turnover action is low, and a small power motor can be used, while the weight of the curtain body being pulled part is changed when completing the lifting action, and a large power motor is required, so that although two motors are used in the double motor of the scheme, appropriate power output can be matched when different actions are completed, and unlike the traditional electric shutter, which can only be output at high power to ensure the smooth completion of the lifting action. Therefore, the scheme is relatively lower in energy consumption.

[0037] 4. Modular structure and convenient maintenance

[0038] The L-shaped mounting seat and the winding groove seat are designed, for example, the turnover wheel groove and the winding drum groove are separated, the quick disassembly and assembly of the driving assembly are realized, and the maintenance complexity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is the overall structure schematic view of the utility model.

[0040] Figure 2 It is the structure schematic view of the L-shaped mounting seat.

[0041] Figure 3 It is the structure schematic view of the rectangular frame.

[0042] Figure 4 It is the structure schematic view of the turnover control block.

[0043] Figure 5 It is the structure schematic view of the lifting control block.

[0044] Figure 6 It is the connection state schematic view of the driving mechanism and the curtain body.

[0045] In the figure: 100 - turnover motor, 200 - lifting motor, 300 - turnover shaft, 400 - lifting shaft, 500 - window top frame, 600 - L-shaped mounting seat, 610 - turnover wheel groove, 611 - turnover wheel, 621 - lifting winding drum, 612 - turnover rope hole, 613 - lifting rope hole, 620 - winding drum groove, 622 - lifting rope opening, 700 - limiting device, 710 - rectangular frame, 720 - turnover threaded shaft cylinder, 730 - lifting threaded shaft cylinder, 740 - turnover control block, 750 - lifting control block, 760 - first turnover limiting switch, 770 - second turnover limiting switch, 780 - first lifting limiting switch, 790 - second lifting limiting switch, 711 - turnover protrusion guide groove, 712 - lifting protrusion guide groove, 741 - turnover limiting sleeve, 742 - turnover protrusion, 751 - lifting limiting sleeve, 752 - lifting protrusion. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0047] The technical solutions of the utility model will be described in detail below with reference to the drawings. The drawings of the embodiment are only schematic, and the specific size and proportion can be adjusted according to the actual application scene.

[0048] As shown in the figure, the embodiment provides a double-motor separate control type electric shutter driving mechanism, which comprises the following core components: Figures 1-6

[0049] I. Double-motor driving module

[0050] The turnover motor 100 and the lifting motor 200 are fixed in the motor housing in parallel, and the output shafts of the two motors are connected to the turnover shaft 300 and the lifting shaft 400 through the shaft coupling; wherein,

[0051] The turnover shaft 300 penetrates the window top frame 500, is keyed to a plurality of turnover wheels 611, and the turnover wheels 611 are wound with turnover ropes for controlling the turnover angle of the shutter blades;

[0052] The lifting shaft 400 is arranged parallel to the turnover shaft 400, is keyed to a plurality of lifting winding drums 621, and the lifting winding drums 621 are wound with lifting ropes for controlling the vertical lifting of the shutter blades.

[0053] II. Double-shaft shaft seat system

[0054] ​L-shaped mounting seats 600 are equidistantly arranged in the top frame 500 of the window body, each mounting seat comprising:

[0055] Facade: The top is provided with a turnover wheel groove 610 to accommodate a turnover wheel 611, the bottom is provided with a turnover rope hole 612 for the turnover rope to pass through, and a lifting rope hole 613 is also provided;

[0056] Horizontal surface: The top is provided with a winding drum groove 620 to fix a lifting winding drum 621, and the side surface adjacent to the lifting rope hole 613 is provided with a lifting rope opening 622 for the lifting rope to pass through.

[0057] The specific number of L-shaped mounting seats 600 is determined according to the width of the curtain body and corresponds to the number of lifting ropes on the curtain body.

[0058] Three, mechanical-electrical interlocking limiting device

[0059] The limiting device 700 comprises a rectangular frame 710, a turnover threaded shaft cylinder 720, a lifting threaded shaft cylinder 730, a turnover control block 740, a lifting control block 750, a first turnover limiting switch 760, a second turnover limiting switch 770, a first lifting limiting switch 780, and a second lifting limiting switch 790. The specific positions and connection relationships are as follows:

[0060] Rectangular frame 710: fixed in the top frame 500 of the window body, the following components are penetrated in the rectangular frame 710:

[0061] Turnover threaded shaft cylinder 720: key connection with turnover shaft 300, the surface of turnover threaded shaft cylinder 720 is provided with external threads, which is threadedly sleeved with turnover control block 740; specifically, turnover control block 740 includes turnover limiting sleeve 741 and turnover protrusion 742, the annular sleeve inner wall of turnover limiting sleeve 741 is provided with internal threads matched with turnover threaded shaft cylinder 720.

[0062] Lifting threaded shaft cylinder 730: key connection with lifting shaft 400, the surface of lifting threaded shaft cylinder 730 is provided with external threads, which is threadedly sleeved with lifting control block 750; specifically, lifting control block 750 includes lifting limiting sleeve 751 and lifting protrusion 752, the annular sleeve inner wall of lifting limiting sleeve 751 is provided with internal threads matched with lifting threaded shaft cylinder 730.

[0063] Limiting guide groove system: turnover protrusion guide groove 711: provided on the top inner wall of rectangular frame 710, the two ends are respectively provided with first turnover limiting switch 760 and second turnover limiting switch 770;

[0064] Lifting protrusion guide groove 712: provided on the bottom inner wall of rectangular frame 710, one end is provided with first lifting limiting switch 780, and the other end is provided with second lifting limiting switch 790 corresponding to the bottom surface of top frame 500 of the window body.

[0065] The logical control relationship between the limit switch and the motor is as follows: the two independent control branches of the turnover motor 100 are connected with the contacts of the first turnover limit switch 760 and the second turnover limit switch 770, respectively, and the disconnection of any contact directly cuts off the power supply of the turnover motor 100.

[0066] The two independent control branches of the lifting motor 200 are connected with the contacts of the first lifting limit switch 780 and the second lifting limit switch 790, respectively, and the disconnection of any contact directly cuts off the power supply of the corresponding lifting motor 200.

[0067] Four, working process

[0068] Turnover action control: start the turnover motor 100, drive the turnover shaft 300 and the turnover threaded shaft cylinder 720 to rotate, and drive the turnover control block 740 to slide along the turnover protrusion guide groove 711;

[0069] When the turnover protrusion 742 contacts the first turnover limit switch 760, the contact is disconnected, the turnover motor 100 stops, and the louver reaches the maximum turnover angle;

[0070] When the turnover protrusion 742 triggers the second turnover limit switch 770, the turnover motor 100 stops, and the louver resets to the horizontal closed state.

[0071] Lifting action control: start the lifting motor 200, drive the lifting shaft 400 and the lifting threaded shaft cylinder 730 to rotate, and drive the lifting control block 750 to slide along the lifting protrusion guide groove 712;

[0072] When the lifting protrusion 752 triggers the first lifting limit switch 780, the lifting motor 200 stops, and the louver drops to the lowest position;

[0073] When the lifting protrusion 752 triggers the second lifting limit switch 790, the lifting motor 200 stops, and the louver rises to the highest position.

[0074] The time-sharing control logic is as follows:

[0075] Mechanical limit: the threaded sleeve joint structure of the turnover control block 740 and the lifting control block 750 ensures that the two motor actions are mutually exclusive, avoiding simultaneous operation;

[0076] Electrical interlocking: after any limit switch is triggered, its contact directly cuts off the power supply of the corresponding motor, without relying on the controller signal, and the response time is ≤50ms.

[0077] Key innovation point example

[0078] Threaded shaft sleeve and control block cooperation: the threaded pair design (thread pitch 0.8mm) of the turnover threaded shaft sleeve 720 and the turnover control block 740 can control the axial positioning accuracy within ±0.05mm, and eliminate the micro-displacement problem of the traditional worm gear transmission.

[0079] Double redundancy limiting system: mechanical guide groove (such as turnover protrusion guide groove 711) and electrical limiting switch (such as first turnover limiting switch 760) form double protection, and the failure rate is reduced by 40%.

[0080] Energy consumption optimization: dual-motor is powered only when in action, compared with traditional clutch structure standby energy consumption is reduced by 62%. In addition, the motor power required to complete the turnover action is low, and a small power motor can complete it. When completing the lifting action, the weight of the curtain body is changing, in order to ensure smooth lifting, a high-power motor needs to be used. Therefore, although this scheme uses two motors, it can match appropriate power output when completing different actions, unlike traditional electric blinds that can only output at high power to ensure smooth lifting. Therefore, this scheme is relatively lower in energy consumption.

[0081] The above structure realizes high-precision, low-wear and low-power operation of the shutter driving mechanism, and is suitable for high-rise buildings and smart home scenes.

[0082] It should be noted that in this paper, terms such as "including", "containing" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0083] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dual-motor, separately controlled electric louver drive mechanism, characterized in that, It includes a tilting motor, a lifting motor, a tilting shaft and a lifting shaft arranged in parallel, a dual-shaft bearing, and a limit device; The dual-axis bearing includes: several mounting seats equidistantly arranged in the top frame of the window, each mounting seat having a rotating wheel keyed to the rotating shaft and a lifting winding drum keyed to the lifting shaft. The limiting device includes: A rectangular frame placed within the top frame of the form; The flip-threaded shaft and the lifting threaded shaft, which pass through the rectangular frame, are keyed to the flip shaft and the lifting shaft, respectively. The flipping control block, which is threaded onto the flipping threaded cylinder, is integrally formed by the flipping limiting sleeve and the flipping protrusion. The lifting control block, which is threaded onto the lifting threaded cylinder, is integrally formed by the lifting limit sleeve and the lifting protrusion. A flip-up guide groove is provided on the inner wall of the top of the rectangular frame, with a first and a second flip-up limit switch at each end; A lifting protrusion guide groove is provided on the inner wall of the bottom of the rectangular frame, and a first lifting limit switch is provided at one end; a second lifting limit switch is fixed to the bottom surface of the top frame of the window. Wherein, the sliding limit of the flipping protrusion is located in the flipping protrusion guide groove, and the sliding limit of the lifting protrusion is located in the lifting protrusion guide groove; The flip motor is connected to the flip shaft. The contacts of the first flip limit switch and the second flip limit switch are respectively located in two independent control branches of the flip motor. The disconnection of any contact will directly cut off the power supply of the flip motor. The lifting motor is connected to the lifting shaft. The contacts of the first lifting limit switch and the second lifting limit switch are respectively located on two independent control paths of the lifting motor. The disconnection of either contact will directly cut off the power supply to the lifting motor.

2. The dual-motor, separately controlled electric louver drive mechanism as described in claim 1, characterized in that, The mounting base is L-shaped in general, with a tilting wheel groove at the top of its facade and a tilting rope hole and a lifting rope hole at the bottom of its facade. Its horizontal top is provided with a winding drum groove, and its side adjacent to the vertical side is provided with a lifting rope opening.

3. The dual-motor, separately controlled electric louver drive mechanism as described in claim 1, characterized in that, The contacts of the first and second flip limit switches correspond to the positions of the flip protrusions.

4. The dual-motor, separately controlled electric louver drive mechanism as described in claim 1, characterized in that, The contacts of the first lifting limit switch correspond to the positions of the lifting protrusion.

5. The dual-motor, separately controlled electric louver drive mechanism as described in claim 1, characterized in that, The flipping motor and the lifting motor are arranged side by side inside the motor housing.

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