CN201650087U - Roller shutter drive device - Google Patents
Roller shutter drive device Download PDFInfo
- Publication number
- CN201650087U CN201650087U CN2009202623162U CN200920262316U CN201650087U CN 201650087 U CN201650087 U CN 201650087U CN 2009202623162 U CN2009202623162 U CN 2009202623162U CN 200920262316 U CN200920262316 U CN 200920262316U CN 201650087 U CN201650087 U CN 201650087U
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Abstract
The utility model relates to a roller shutter drive device which comprises a direct current motor and a controller thereof, wherein the direct current motor is provided with a first terminal (36) and a second terminal (38). The roller shutter drive device is characterized in that the controller comprises an upward relay (26), an upward switch (30), a downward relay (28), a downward switch (32) and a stopping switch (34), wherein the upward relay (26) and the upward switch (30) are connected in series; the upward relay is provided with a first contactor (44) and a second contactor (48); the downward relay (28) and the downward switch (32) are connected in series; the downward relay is provided with a third contactor (46) and a fourth contactor (50); the stopping switch (34) is used for switching off the upward relay and the downward relay; and after the stopping switch (34) is turned off, the first terminal (26) and the second terminal (38) of the motor realize short circuit respectively by the first contactor (44) and the third contactor (46). Since the roller shutter drive device has increased holding torque, a small motor can be used, thereby saving space and achieve attractive appearance.
Description
Technical field
The utility model relates to the roller shutter drive unit, relates in particular to electric machine controller wherein.Described roller shutter can be screen of using of curtain, door curtain, shutter, projection etc.
Background technology
The roller shutter drive unit generally includes motor, gear-box and spool, and motor drives spool by gear-box, realizes make progress rolling or unfold of roller shutter downwards.The weight of the part of having unfolded of roller shutter is applied with moment to spool, and the part of having unfolded is heavy more, just can produce the big more moment that gets, and this moment can affact motor, and directly has influence on motor properties, and this influence is mainly reflected in two aspects.In the process that the roller shutter rolling that first aspect, motor will be unfolded is fully got up, motor is in the situation of maximum load at first, and motor need overcome the gravity that is hanging to the roller shutter on the spool arduously; Then, in the process of the continuous rolling of roller shutter, load constantly reduces, and load reaches minimum when the complete rolling of roller shutter is got up.That is to say that when roller shutter was almost completely unfolded, motor was the slowest; When roller shutter when almost completely rolling is got up, motor is the fastest.On the other hand, when motor makes in the open process of roller shutter, the initial load of motor is very little because roller shutter nearly all rolling to spool and can rotate apace; Then, along with unfolding of roller shutter, the gravity of roller shutter will help motor to drive spool, even may cause motor can not control the speed of spool.That is to say that in the process of rolling roller shutter and spread apart roller shutter, the speed tool of spool is very different, institute's time spent of rolling roller shutter is longer than unfolding roller shutter institute's time spent certainly.
Another problem is that the weight of roller shutter cooperates the diameter of spool, can produce very important moment to drive unit.When roller shutter was positioned at lower position, the motor that has cut off the power supply may not have enough self-lock forces roller shutter to be maintained the position of wanting.For example, roller shutter has been unfolded 80% back and during disable motor, the weight of the part of having unfolded can produce moment to spool, thereby impel scroll roll to continue to unfold roller shutter, this situation is called reverse drive (back drive), that is to say that motor is driven by load, rather than the motor-driven load.This be because the moment that the roller shutter of unfolding applies spool greater than the holding torque (holding torque) of motor.
The trend of roller shutter drive unit is miniaturization.Therefore, increasing roller shutter drive unit uses less motor, and use comparatively simple gear-box even not use gear-box (just by the electric-machine directly-driven spool), thus cause above-mentioned two problems to become more and more outstanding, because motor has littler holding torque under this design.
Existing solution is to use relatively large motor to drive spool by the gear-box of complexity, perhaps uses the motor at a high speed and the gear-box of high speed ratio, perhaps uses the clutch or the mechanical braking system of complicated anti-reverse drive.Also have a kind of scheme to be to use electronic controller to apply one and keep electric current, to increase the holding torque of motor to motor.That is to say that when curtain was static, motor remained running under the state of stall.All these solutions are more complicated all, and it is bigger to take sky, and has higher energy consumption.
Therefore, need a kind of simple in structure, than the roller shutter drive unit of low energy consumption.
Summary of the invention
The utility model provides a kind of roller shutter drive unit, comprise direct current generator and controller thereof, described direct current generator has first power supply terminal and second power supply terminal, described controller comprises: the upwards relay of serial connection and the switch that makes progress, described upwards relay has first contactor and second contactor, and described upwards switch is used to activate described upwards relay with the control motor rolling roller shutter that makes progress; The downward relay of serial connection and downward switch, described downward relay has the 3rd contactor and the 4th contactor, and described downward switch is used to activate described downward relay and unfolds roller shutter downwards with the control motor; Shutdown switch is used to disconnect described upwards relay and downward relay, and after described shutdown switch disconnected, first power supply terminal of described motor and second power supply terminal were realized short circuit by described first contactor and the 3rd contactor respectively.
Preferably, after described shutdown switch disconnected, described first power supply terminal and second power supply terminal were respectively by described first contactor and the 3rd contactor ground connection.
Preferably, described first contactor, the 3rd contactor all have two double-throw contacts; After the described relay that makes progress was activated, described first contactor was connected to power supply first utmost point with first power supply terminal of described motor, and described the 3rd contactor is connected to power supply second utmost point with second power supply terminal of described motor.
Preferably, after described downward relay was activated, described the 3rd contactor was connected to power supply first utmost point with second power supply terminal of described motor, and described first contactor is connected to power supply second utmost point with first power supply terminal of described motor.
Preferably, described upwards relay and downward relay all are connected to power supply second utmost point by described shutdown switch.
Preferably, described second contactor has two double-throw contacts; Described downward relay by be connected in series downward switch, second contactor is connected to power supply first utmost point; After described upwards relay was activated, described second contactor relay that will describedly make progress was communicated to power supply first utmost point, and disconnected between downward switch and power supply first utmost point and being connected.
Preferably, described the 4th contactor has two double-throw contacts; Upwards switch, the 4th contactor are connected to power supply first utmost point to described upwards relay by serial connection; After described downward relay was activated, described the 4th contactor was connected to power supply first utmost point with described downward relay, and disconnected being connected between described upwards switch and power supply first utmost point.
Preferably, described power supply first is very anodal, and power supply second is negative pole very.
Preferably, after described downward relay was activated, second power supply terminal of motor was connected to power supply first utmost point by being connected in series the 3rd contactor, second diode and the 4th contactor; The positive pole of described second diode connects described the 4th contactor, and negative pole connects described the 3rd contactor.
Preferably, the negative pole of described second diode also is connected to power supply second utmost point by first resistor and second resistor of serial connection, and described the 3rd contactor is connected between described first resistor and second resistor.
Preferably, also comprise first diode of described downward relay of series connection and described shutdown switch, the positive pole of described first diode connects described downward relay, and negative pole connects described shutdown switch.
Preferably, described shutdown switch is a normally closed switch, and described upwards switch and described downward switch are normal open switch.
The roller shutter drive unit that embodiment of the present utility model provides has the holding torque of increase, therefore can use small-sized motor, make that the volume of roller shutter drive unit is less, thereby can be installed to the roller shutter drive unit in the spool, save the space, and had effect attractive in appearance.
In order further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, yet institute's accompanying drawing only provide with reference to and the explanation usefulness, be not to be used for the utility model is limited.
Description of drawings
In the accompanying drawing:
Fig. 1 is a kind of schematic diagram of roller shutter;
Fig. 2 is the schematic diagram of electric machine controller under the motor " shut " mode" among embodiment of the utility model;
Fig. 3 is the schematic diagram of electric machine controller under the rolling pattern that makes progress among embodiment of the utility model;
Fig. 4 is that electric machine controller is unfolded schematic diagram under the pattern among embodiment of the utility model downwards, and this is the situation of little load;
Fig. 5 is that electric machine controller is unfolded schematic diagram under the pattern among embodiment of the utility model downwards, and this is the situation of heavy load.
The specific embodiment
Below in conjunction with accompanying drawing,, will make the technical solution of the utility model and other beneficial effects apparent by specific embodiment of the utility model is described in detail.
Roller blind device 10 shown in Figure 1 comprises rotating spool 12, and for example, spool 12 is pivotally mounted to wall by support 16.Roller shutter 14 is installed to spool 12, and can rolling perhaps unfold from spool to spool along with the rotation of spool 12.Roller shutter of the present utility model 14 refers to flexiblely can rolling unfold the article that get off to spool and from spool, for example the screen of shutter, curtain, projector etc.Roller blind device 10 comprises that also drive unit is used for driving spool 12 with rolling roller shutter 14 or unfold roller shutter 14.Preferred drive unit is a motor 18, but combination gear case or combination gear case not.Drive unit preferably is installed in the spool 12, for example is fixed to support 16 and extend into an end of spool 12.Preferably, the electric wire 20 that connects motor 18 and control panel 22 also passes through support 16.The controller that is used to control motor can be attached in the spool 12, to obtain the protection of spool; But preferably, controller is attached in the control panel 22 away from motor, so that user's operation.Only need two wires under this design between motor 18 and the control panel 22.
Fig. 2 is the circuit diagram that a kind of preferred electric machine controller is in halted state (OFF).Controller 24 is controlled the rotation of spool 12 by control motor 18, thereby realizes upwards the rolling roller shutter, unfold roller shutter or roller shutter stopped at the position of wanting downwards.The circuit of controller 24 comprises two relays 26 and 28, and these two relays are by upwards switch 30, switch 32 and shutdown switch 34 controls downwards.Each relay all has two double-throw contacts, for example DPDT (DPDT) relay.Each switch all is a moment press button (momentary push button switch).Upwards switch 30 and downward switch 32 all have constant open contact, and shutdown switch 34 has constant close contact.Be applied to the polarity of the DC voltage of motor terminal 36,38 by change, just can realize moving upward and moving downward of roller shutter.In stop mode, motor terminal 36 and motor terminal 38 be short circuit together.
Present embodiment middle controller and motor all use dc source.In Fig. 2, cathode power supply line 40 is illustrated in the top of figure, and anode power cord 42 is illustrated in the below of figure, anode power cord 42 ground connection.First power supply terminal 36 of motor 18 is connected to the public terminal of first contactor 44, and first contactor 44 is also referred to as first contactor of first relay 26 (being also referred to as upwards relay 26).And second power supply terminal 38 of motor is connected to the common port of the 3rd contactor 46, and the 3rd contactor 46 is also referred to as first contactor of second relay 28 (being also referred to as downward relay).In this stopping (OFF) state or idle condition, motor terminal 36 and 38 is connected to anode power cord 42 (ground connection just) by first contactor 44, the 3rd contactor 46 respectively.That is to say that motor terminal 36 and 38 has formed short circuit, thereby increased the holding torque of motor.After motor terminal 36 and 38 short circuits, the rotating shaft of the rotary electric machine comparison difficulty that will become, because this motor is equivalent to be mounted with the generator of heavy load.
The left-hand component of Fig. 2, upwards relay 26 and downward relay 28 are connected between cathode power supply line 40 and the anode power cord 42 (ground) by some contactors and switch.Upwards relay 26 can be by upwards switch 30 and the 4th contactor 50 are connected to second contactor that cathode power supply line 40, the four contactors 50 are also referred to as second relay 28.Upwards relay 26 can also directly be connected to cathode power supply line 40, the second contactors 48 by second contactor 48 and be also referred to as upwards second contactor of relay 26.Relay 28 is connected to cathode power supply line 40 by the downward switch 32 and second contactor 48 downwards, can also directly be connected to cathode power supply line 40 by the 4th contactor 50.Upwards relay 26 and downward relay 28 all pass through shutdown switch 34 ground connection (just being connected to anode power cord 42).First diode 52 is serially connected between downward relay 28 and the shutdown switch 34, when preventing that stop button 34 is pressed, electric current by second contactor 48, upwards relay 26, relay 28, second diode 54, first resistor 56 and second resistor 58 are connected to anode power cord 42 and cause upwards that relay 26 is released, 28 times of activation of relay downwards downwards.When upwards relay 26 moved, first power supply terminal 36 of motor directly was connected to cathode power supply line 40 by first contactor 44.During relay 28 operations downwards, second power supply terminal 38 of motor can be connected to cathode power supply line 40 by the 3rd contactor 46 and bleeder circuit, and this bleeder circuit comprises first resistor 56, second resistor 58, second diode 54 and the 4th contactor 50.
In off position, the terminal of motor by short circuit together, spool 22 and roller shutter 14 are locked in current location by magnetostatic frictional force (static magnetic friction), if drive unit has used gear-box, so, this magnetostatic frictional force is also amplified by the gearratio of gear-box (gear ratio).If roller shutter 14 is owing to own wt or other reasons are prepared toward gliding, induced electromotive force will produce a regeneration power that makes progress (regenerative force), and this reverse power can remain on equilibrium state with roller shutter and not need to expend the energy of power supply.
Fig. 3 is that controller 24 is at the circuit of the state of making progress and the schematic diagram of electric current.When upwards switch 30 was pressed, electric current flow through the 4th contactor 50 and the switch 30 that makes progress, and give upwards relay 26 power supplies, and relay 26 was by shutdown switch 34 ground connection.This can change the state of first contactor 44 and second contactor 48.In this state, second contactor 48 relay 26 that will make progress is directly connected to cathode power supply line 40, has walked around upwards switch 30, and the relay 26 that makes progress when allowing to discharge upwards switch 30 remains on state of activation (active).First contactor 44 is connected to cathode power supply line 40 with motor terminal 36, electric current flows to first power supply terminal 36 of motor through first contactor 44 from cathode power supply line 40, then flow through second power supply terminal 38 of motor and motor, flow to ground (arrow in the sense of current reference diagram) by the 3rd contactor 46 then.Like this, the motor operation that will always make progress is till stop button 34 is pressed.When stop button 34 is pressed, upwards relay 26 will withdraw from (drop out), and controller 24 is switched to halted state.When upwards relay 26 is in activation, if switch 32 is pressed downwards, relay 28 can not be activated downwards, because second contactor 48 has cut off downward relay 28 and cathode power supply line 40, thereby has prevented that upwards relay 26 moves simultaneously with downward relay 28.
Circuit when Fig. 4 is the downward state of controller 24 under the situation of little load and the schematic diagram of electric current.When switch 32 was pressed downwards, electric current was given downward relay 28 power supplies from cathode power supply line 40 by second contactor 48, downward switch 32, and relay 28 is by shutdown switch 34 ground connection.Like this, relay 28 has been controlled the 3rd contactor 46 and the 4th contactor 50.Under this state, the 4th contactor 50 directly is connected to cathode power supply line 40 with downward relay 28, has walked around downward switch 32, so even switch 32 has been released downwards, relay 28 still can keep activating downwards.Second power supply terminal 38 of motor is connected to cathode power supply line 40 through first resistor 56 of the 3rd contactor 46, bleeder circuit, electric current flows to second power supply terminal 38 of motor from cathode power supply line 40 by the 4th contactor 50, second diode 54, first resistor 56, the 3rd contactor 46, flows to anode power cord 42 through motor 18, first power supply terminal 36 of motor, first contactor 44 then.Like this, motor has just moved downwards, till stop button 34 is pressed.When stop button 34 is pressed, relay 28 will be released downwards, and controller 24 switches to halted state.Relay 28 is in when activating downwards, if upwards switch 30 is pressed, the relay 26 that makes progress can not be activated, because the 4th contactor 50 has cut off upwards switch 30 and cathode power supply line 40, thereby has prevented that upwards relay moves simultaneously with downward relay.In this design, when flowing through second resistor of bleeder circuit, understands in electric current some loss.But the current loss that this second resistor causes, and the current loss that causes of first resistor 56 in the motor power supply circuits just cooperate with the little load of downward operation, thus upward velocity that is mated more and speed downwards.
Fig. 5 is that controller 24 has circuit and the current diagram under the situation of heavy load at motor.So-called heavy load is meant that the load that is applied to spool can drive motors, perhaps makes the motor hypervelocity.Motor is at first with downward mode operation.Along with roller shutter is constantly unfolded, load will increase gradually.Prepare anti-when driving motor 18 when load, motor 18 just begins to be transformed into generator.Relay 28 continues to keep activating downwards, and second diode 54 prevents that the electric current of motor from withdrawing from downward relay 28.Because variation has taken place in the voltage difference of motor, motor begins to move in the mode of generator, the electric current of motor of flowing through commutates, the terminal 36,38 of motor links together by second resistor 58, make the mode operation of motor with regenerative braking (regenerativebraking), the voltage of motor output all is applied to this second resistor 58, thereby has reduced the downward speed of motor.That is to say that the power that the roller shutter of being unfolded applies is lifted constantly and increased, the regenerative braking of motor also constantly increases, thereby can reduce the downward speed of motor.When shutdown switch 34 was pressed, relay 28 withdrawed from downwards, no longer activates the 3rd contactor 46, and the terminal 36 and 38 of direct short-circuit motor (output of electrical short circuit), thereby stops motor 18 apace and controller is turned back to halted state.
Controller of the present utility model can improve the holding torque of motor, thus can use small-sized and efficiently direct current generator drive spool.Using an advantage of micro-machine is that the spool drive unit can be installed in the spool, has saved the space and has seemed more attractive in appearance.
The above; for the person of ordinary skill of the art; can make other various corresponding changes and distortion according to the technical solution of the utility model and technical conceive, and all these changes and distortion all should belong to the protection domain of claim of the present utility model.
Claims (12)
1. a roller shutter drive unit comprises direct current generator and controller thereof, and described direct current generator has first power supply terminal (36) and second power supply terminal (38), it is characterized in that described controller comprises:
The upwards relay (26) of serial connection and switch (30) upwards, described upwards relay has first contactor (44) and second contactor (48), and described upwards switch is used to activate the described relay that makes progress to control the motor rolling roller shutter that makes progress;
The downward relay (28) of serial connection and downward switch (32), described downward relay has the 3rd contactor (46) and the 4th contactor (50), and described downward switch is used to activate described downward relay and unfolds roller shutter downwards with the control motor;
Shutdown switch (34), be used to disconnect described upwards relay and downward relay, after described shutdown switch (34) disconnected, first power supply terminal (36) of described motor and second power supply terminal (38) were realized short circuit by described first contactor (44) and the 3rd contactor (46) respectively.
2. roller shutter drive unit according to claim 1 is characterized in that, after described shutdown switch (34) disconnected, described first power supply terminal (36) and second power supply terminal (38) were respectively by described first contactor (44) and the 3rd contactor (46) ground connection.
3. roller shutter drive unit according to claim 1 and 2 is characterized in that, described first contactor and the 3rd contactor all have two double-throw contacts; After the described relay (26) that makes progress is activated, described first contactor (44) is connected to power supply first utmost point (40) with first power supply terminal (36) of described motor, and described the 3rd contactor (46) is connected to power supply second utmost point (42) with second power supply terminal (38) of described motor.
4. roller shutter drive unit according to claim 3, it is characterized in that, after described downward relay (28) is activated, described the 3rd contactor (46) is connected to power supply first utmost point (40) with second power supply terminal (38) of described motor, and described first contactor (44) is connected to power supply second utmost point (42) with first power supply terminal (36) of described motor.
5. roller shutter drive unit according to claim 4 is characterized in that, described upwards relay (26) and downward relay (28) all pass through described shutdown switch (34) and be connected to power supply second utmost point.
6. roller shutter drive unit according to claim 5 is characterized in that, described second contactor has two double-throw contacts; Described downward relay (28) is connected to power supply first utmost point by serial connection downward switch (32), second contactor (48); After described upwards relay (26) was activated, described second contactor relay (26) that will describedly make progress was communicated to power supply first utmost point, and disconnected between downward switch (32) and power supply first utmost point and being connected.
7. roller shutter drive unit according to claim 6 is characterized in that, described the 4th contactor has two double-throw contacts; Upwards switch (30), the 4th contactor (50) are connected to power supply first utmost point to described upwards relay (26) by serial connection; After described downward relay (28) was activated, described the 4th contactor was connected to power supply first utmost point with described downward relay (28), and disconnected being connected between described upwards switch (30) and power supply first utmost point.
8. according to any described roller shutter drive unit in the claim 4 to 7, it is characterized in that described power supply first is very anodal, power supply second is negative pole very.
9. roller shutter drive unit according to claim 8, it is characterized in that, after described downward relay (28) was activated, second power supply terminal (38) of motor was connected to power supply first utmost point (40) by serial connection the 3rd contactor (46), second diode (54) and the 4th contactor (50); The positive pole of described second diode (54) connects described the 4th contactor, and negative pole connects described the 3rd contactor.
10. roller shutter drive unit according to claim 9, it is characterized in that, the negative pole of described second diode (54) also is connected to power supply second utmost point (42) by first resistor (56) and second resistor (58) of serial connection, and described the 3rd contactor (46) is connected between described first resistor and second resistor.
11. roller shutter drive unit according to claim 8, it is characterized in that, also comprise first diode (52) of series connection described downward relay (28) and described shutdown switch (34), the positive pole of described first diode (52) connects described downward relay, and negative pole connects described shutdown switch.
12. according to any described roller shutter drive unit in the claim 9 to 11, it is characterized in that described shutdown switch (34) is a normally closed switch, described upwards switch (30) and described downward switch (32) are normal open switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202623162U CN201650087U (en) | 2009-12-29 | 2009-12-29 | Roller shutter drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202623162U CN201650087U (en) | 2009-12-29 | 2009-12-29 | Roller shutter drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650087U true CN201650087U (en) | 2010-11-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202623162U Expired - Lifetime CN201650087U (en) | 2009-12-29 | 2009-12-29 | Roller shutter drive device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650087U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817550A (en) * | 2011-06-06 | 2012-12-12 | 阿尔佛雷德许内勒贝格公司 | Belt winder used for belt strap of shading device, especially roller shutter |
| CN109854120A (en) * | 2019-02-28 | 2019-06-07 | 中国科学院紫金山天文台 | A kind of control system that astronomical dome rain and snow weather is automatically closed |
| CN110286556A (en) * | 2019-08-01 | 2019-09-27 | 盐城天锐先锋电子科技有限公司 | A kind of curtain control method and control mechanism |
-
2009
- 2009-12-29 CN CN2009202623162U patent/CN201650087U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817550A (en) * | 2011-06-06 | 2012-12-12 | 阿尔佛雷德许内勒贝格公司 | Belt winder used for belt strap of shading device, especially roller shutter |
| CN102817550B (en) * | 2011-06-06 | 2016-01-20 | 阿尔佛雷德许内勒贝格公司 | Belt for the belt etc. of shade, particularly roller shutter etc. batches device |
| CN109854120A (en) * | 2019-02-28 | 2019-06-07 | 中国科学院紫金山天文台 | A kind of control system that astronomical dome rain and snow weather is automatically closed |
| CN110286556A (en) * | 2019-08-01 | 2019-09-27 | 盐城天锐先锋电子科技有限公司 | A kind of curtain control method and control mechanism |
| CN110286556B (en) * | 2019-08-01 | 2020-12-15 | 盐城天锐先锋电子科技有限公司 | Curtain control method and control mechanism |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Granted publication date: 20101124 |
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| CX01 | Expiry of patent term |