CN101459361A - Electric swinging caster wheel - Google Patents
Electric swinging caster wheel Download PDFInfo
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- CN101459361A CN101459361A CNA2007101688038A CN200710168803A CN101459361A CN 101459361 A CN101459361 A CN 101459361A CN A2007101688038 A CNA2007101688038 A CN A2007101688038A CN 200710168803 A CN200710168803 A CN 200710168803A CN 101459361 A CN101459361 A CN 101459361A
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- tongue tube
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Abstract
The invention relates to an electric rocking caster wheel, which comprises a motor and wheels, wherein the a stator of the motor is fixed on a caster wheel support, the wheels are eccentrically arranged on a rotor of the motor, a trigger source is fixed on the wheels, at least a position sensor is arranged near a motion trajectory of the trigger source, the position sensor is fixed on the caster wheel support, the output end of the position sensor is connected with a driving circuit, and the output end of the driving circuit is connected with the motor. The electric rocking caster wheel uses an eccentric rocking structure, because without a mechanical transmission mechanism, the motor does work just when a gravity equilibrium point of the wheels is close to the ground, the electric rocking caster wheel has the characteristics of simple structure, saving energy, low cost, long life and reliable and steady performance and the like.
Description
Technical field
The present invention relates to a kind of electric swinging device, especially relate to a kind of electric swinging caster wheel.
Background technology
As everyone knows, seat such as common shaking table (comprise cot and adult shaking table) or rocking chair crouch and wave tool and need people to promote just can wave, and need be continuously applied external force, swing and just can keep down.For this reason, people have designed a lot of electric cradles and rocking chair substitutes manually, and these electric cradles and rocking chair as power, drive bed body or chair body shake by transmission mechanism or magnetic force with motor or electromagnet.Disclose a kind of automatic cradle bed as Chinese patent CN2585599, its cradle and motor link by transmission device, and by controller set shake rule and sequential is swung.
By to the prior art analysis, be not difficult to find, the rocking equipment of existing shaking table and rocking chair exists following deficiency: 1. transmission device or magnetic force swing mechanism complexity, be out of order easily, as long as one of them drive disk assembly breaks down, just may cause product to use; 2, noise and mechanical oscillation are bigger, and particularly baby's sleep influence is bigger to people.3. technical problems such as because electromagnetism rocking equipment efficient is low, and the motor swing device is because its transmission mechanism exists gearing friction, and therefore all to exist power consumption big for existing rocking equipment, not energy-conservation.
Summary of the invention
The object of the invention provides a kind of electric swinging caster wheel, solving the existing complex structure of rocking equipment of existing shaking table and rocking chair, and easy break-down, noise is big, price high-technology problem.
The present invention mainly solves above-mentioned technical problem by following technical proposals: it comprises motor, wheel, the stator of described motor is fixed on the trundle bracket, described wheel is eccentrically set on the rotor of motor, on wheel, be fixed with the triggering source, be provided with at least one position transducer near triggering source movement trajectory, this position transducer is fixed on the trundle bracket; The output of described position transducer is connected with drive circuit, and the output of drive circuit is connected with motor; The position signalling that position transducer will trigger the source flows to drive circuit, and drive circuit produces a lock-out pulse voltage thus, and then this lock-out pulse voltage freely swings direction in the same way by the torque direction and the wheel of motor.
As preferably, described position transducer is a tongue tube, and wherein a tongue tube is provided with near the arbitrfary point of triggering between the source movement trajectory end points to 1/4, and another tongue tube is arranged near the mid point of movement locus line.
As preferably, described drive circuit comprises delay switch circuit, voltage transitions relay and electric motor starting relay, the wherein coil of electric motor starting relay and the both positive and negative polarity that is connected to power supply after tongue tube is connected, the input of described delay switch circuit connects positive source through another tongue tube, and its load end connects positive source through the coil of voltage transitions relay, the fixed contact of described voltage transitions relay intersects to connecting the both positive and negative polarity that back formation two wiring points are connected to driving power, and a moving contact of voltage transitions relay is connected with a binding post of motor, another moving contact is connected with the moving contact of electric motor starting relay, and the fixed contact of electric motor starting relay then is connected with another binding post of motor.
As preferably, described position transducer is a tongue tube, and this tongue tube is arranged near the mid point of movement locus line.
As preferably, described drive circuit comprises bistable switching circuit, delay switch circuit and electric motor starting relay, described bistable switching circuit, the input of delay switch circuit connects positive source through tongue tube, the load end of described delay switch circuit connects positive supply through the coil of electric motor starting relay, respectively the hang oneself coil of voltage transitions relay of the collector electrode of two triodes connects negative supply in the described bistable switching circuit, form the both positive and negative polarity that two wiring points are connected to driving power after the mutual interconnection of the moving contact of described two voltage transitions relays, and the corresponding mutually back that connects of the fixed contact of two voltage transitions relays forms two lead-out terminals, wherein a lead-out terminal is connected with a binding post of motor, another lead-out terminal is connected with the moving contact of electric motor starting relay, and the fixed contact of electric motor starting relay then is connected with another binding post of motor.
As preferably, described position transducer can also be Hall switch or optoelectronic switch.
As preferably, described triggering source is magnet or light-emitting diode or light reflection mirror.
The present invention adopts eccentric wheel to wave structure, owing to there is not mechanical transmission mechanism, and its motor only does work during near ground at the gravitational equilibrium point of wheel, therefore have simple in structure, energy-conservation, cost is low, the life-span is long, dependable performance such as stablizes at characteristics.Silent during its work, overcome defectives such as traditional shaking table or rocking chair noise are big, vibration is big.In addition, be that nature waves fully because eccentric wheel waves, it waves similar, very soft to artificial promotion, thereby special hommization.
Description of drawings
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is described in further detail.
Fig. 1 is the front view of first kind of preferred implementation of the present invention;
Fig. 2 is the end view of first kind of preferred implementation of the present invention;
Fig. 3 is the user mode figure that the present invention is applied to rocking chair;
Fig. 4 is the another kind of structural representation of wheel of the present invention;
Fig. 5 is the working state schematic representation of first kind of preferred implementation of the present invention;
Fig. 6 is the circuit theory diagrams of first kind of preferred implementation of the present invention;
Fig. 7 is the front view of second kind of preferred implementation of the present invention;
Fig. 8 is the working state schematic representation of second kind of preferred implementation of the present invention.
Embodiment
Fig. 1 is the front view of first kind of preferred implementation of the present invention, and Fig. 2 is its end view.By Fig. 1 and in conjunction with Fig. 2 as can be known, it mainly is made of motor M, wheel 7.Wheel 7 is eccentrically set on the rotor 6 (housing) of outer rotor motor M, and the stator 5 (motor shaft) of motor M is fixed on the trundle bracket 4.Certainly, above-mentioned motor M also can adopt inner-rotor type motor, and promptly housing is motionless, the motor that motor shaft rotates.By Fig. 3 further as can be known, above-mentioned trundle bracket 4 can be fixed on the bottom of rocking chair (or shaking table).
Because wheel 7 eccentric settings, if it is applied certain motive force, this wheel 7 will oscillate, until static.When static, wheel 7 contacts with ground a bit is gravitational equilibrium point f.According to principle of conservation of energy, the swing that wants wheel 7 can continue, and just must constantly apply certain external force to wheel 7.In order to allow wheel 7 play pendulum voluntarily, and swing is more steady behind 7 pendulum of wheel, applies the external force best opportunity generally to be selected in wheel 7 when static.When therefore we will be selected in gravitational equilibrium point f near ground to the application of force time of wheel 7.At this moment, motor M starts, and gives wheel 7 works done of swing.During work done, the torque of motor M (rotating torque) direction should freely swing direction in the same way with wheel 7, so just can give the motive force in 7 one fronts of wheel, and according to the size of wheel, the power done time of motor M must limit within the specific limits.In actual applications, its power done time is generally less than 1/4 hunting period, if the time is wide, wheel 7 can exceed its swing terminal point a or b point, rotates into continuing thereby may become swing.Therefore, as long as motor M is applied a lock-out pulse voltage in good time, the swing of wheel 7 will continue.
Fig. 4 is the another kind of structural representation of wheel of the present invention.This wheel be shaped as olive shape.Because the wheel among the present invention is not to be used for rotating, during therefore concrete enforcement, as long as that section profile a-f-b that wheel contacts with ground is circular arc or approaches circular arc, and the rotor of motor with eccentric manner be arranged on this circular arc center of circle o under, this wheel can normally be swung so.This shows, non-contacting that section profile in wheel and ground, its shape can be other geometry.
Fig. 5 is the working state schematic representation of first kind of preferred implementation of the present invention.Be fixed with triggering source 2 at wheel 7 near the circumference place, when wheel 7 waved, 2 meetings of triggering source were along with movement in a curve is done in the swing of wheel 7, so dotted line b '-c-e-d-a ' is triggering source 2 movement locus lines on its wheel 7.In this movement locus line, b ' or a ' are end points, its corresponding wheel swing terminal point b or a; From end points, the e point is a mid point, and c or d ' is 1/4 point of triggering source 2 movement locus lines.In fact, mid point e is the position that wheel 7 triggers source 2 when static, and 1/4 work done that can be considered motor M is interval and the separation in non-work done district.
Be provided with position transducer (1,3) near the 2 movement locus lines of triggering source, described position transducer is fixed on the trundle bracket 4, when triggering source 2 near the time, this position transducer can induce a triggering signal (switching signal) immediately.Above-mentioned triggering source 2 is a magnet, and position transducer then can adopt tongue tube or Hall switch.In a hunting period, moment direction and application of force time that its motor M acts on the wheel 7 are controlled by two tongue tubes.Wherein tongue tube 3 is arranged near the mid point of magnet 2 movement locus lines, and tongue tube 1 is arranged near the arbitrfary point between the triggering source 2 movement locus line endpoints to 1/4.
Fig. 6 is the circuit diagram of first kind of preferred implementation.Its drive circuit is made of delay switch circuit 8, voltage transitions relay J 1, electric motor starting relay J 2, driving power E etc.Wherein electric motor starting relay J 2 is a normally opened relay, its coil one contact ground connection, and another contact is connected with a lead-out terminal of tongue tube 3, and another lead-out terminal of tongue tube 3 meets the anodal V of stabilized voltage power supply
CC Delay switch circuit 7 is a kind of typical case, desirable RC delay circuit, and it mainly is made of the multiple tube that capacitor C 1, adjustable resistance R1, triode BG1, BG2 form.The contact of the input of this delay switch circuit---adjustable resistance R1 is connected with a lead-out terminal of tongue tube 1, and another lead-out terminal of tongue tube 1 then connects positive source through the coil of voltage transitions relay; The collector electrode of the load end of delay switch circuit---multiple tube meets positive source V through the coil of voltage transitions relay J 1
CCAfter tongue tube 1 conducting, power supply immediately to capacitor C1 charging and after through adjustable resistance R1 for multiple tube provides the base stage bias current, make the multiple tube conducting, 1 adhesive of voltage transitions relay J; After tongue tube 1 disconnected, capacitor C 1 continued as multiple tube through R1 the base stage bias current is provided, and made multiple tube keep conducting state, allowed the purpose of voltage transitions relay J 1 delay cut-off to reach.By regulating the resistance of R1, with regard to the length of scalable delay time.Voltage transitions relay J 1 is the conversion hysteria relay, it has two contact sets J1-1, J1-2, each group is made of two fixed contacts and the moving contact that is positioned in the middle of two fixed contacts, and each fixed contact intersects and forms the both positive and negative polarity that two wiring points are connected to driving power to connecting the back in two groups.One moving contact of voltage transitions relay J 1 is connected with the binding post of motor M, another moving contact then is connected with the moving contact of electric motor starting relay J 2, the fixed contact of electric motor starting relay then is connected with another binding post of motor M, therefore as long as the moving contact of voltage transitions relay J 1 is changed once, the direction that motor M goes up supply power voltage will change once.
During the work of this preferred implementation, voltage transitions relay J 1 is carried out voltage transitions earlier, and electric motor starting relay J 2 is responsible for opening and closing motor M then.Its course of work is: when wheel 7 was static, tongue tube 3 was positioned at its triggering source---and under the magnet 2 (mid point e), tongue tube 3 is in conducting state, the normally opened contact closure of electric motor starting relay J 2.After the driving power K switch was closed, motor M started immediately, and wheels is the direction rotation between 7 inverse times, when magnet 2 turns to 1/4 c of its movement locus line, tongue tube 3 leaves the magneticaction scope of magnet 2, so electric motor starting relay J 2 contacts disconnect, motor M quits work.Then wheel 7 continues direction rotation between the inverse time, when turning to tongue tube 1 when being positioned at the magneticaction scope of magnet 2, tongue tube 1 conducting, delay switch circuit 8 starting resistor switching relay J1 and triggers, the direction of the voltage of driving power E obtains conversion like this.When magnet 2 turns to end points b ' time, wheel 7 beginning backswing and between up time direction rotate.When magnet 2 turns to tongue tube 3 when being positioned at the magneticaction scope of magnet 2, tongue tube 3 is in conducting state again, electric motor starting relay J 2 closings of contact, immediately the driving power voltage behind the conversion direction is added on the motor M, motor M gives 7 one on the wheel moment of (direction between up time) in the same way like this, promotes wheel 7 and continues between up times direction and rotate.When the magnet on the wheel 72 turns to 1/4 d, tongue tube 3 leaves the magneticaction scope of magnet 2, electric motor starting relay J 2 is closed, voltage returns zero, motor M quits work, then the delay circuit time-delay finishes, the moving contact of voltage transitions relay J 1 closure that resets, and the voltage direction of driving power E is recovered.When magnet 2 turns to end points a ' time, wheel begins direction backswing between the inverse time, when magnet 2 turns to tongue tube 3 when entering the magneticaction scope of magnet 2 again, thereby enters duty cycle next time.In this preferred implementation, because the pulse duration (supply power voltage continue time) that acts on the lock-out pulse voltage on the motor M in fact ON time by tongue tube 3 decides, the ON time of tongue tube 3 is then decided by magnet 2 action time in its vicinity, therefore the length of magnet 2 should approximately be 1/8 of its movement locus line length, to guarantee that tongue tube 3 has a rational ON time.
Fig. 7 is the working state schematic representation of second kind of preferred implementation.Different with first kind of execution mode is that its position transducer only has only one, and promptly tongue tube 3, and this tongue tube 3 is arranged on the triggering source---near the magnet 2 movement locus line mid points.Fig. 8 is the circuit diagram of second kind of preferred implementation.Its drive circuit comprises bistable switching circuit 9, delay switch circuit 8 and electric motor starting relay J 3, and bistable circuit adopts positive-negative power+E
B,-E
CPower supply, the collector electrode of two triode BG1 and BG2 coil and the negative supply-E by voltage transitions relay J 1 and J2 respectively in this circuit
CConnect, because this bistable circuit has two stable states: perhaps relay J 1 energising, J2 outage or relay J 1 outage, therefore the J2 energising is well suited for doing voltage change-over switch in drive circuit of the present invention.Delay switch circuit 4 adopts the RC delay circuit the same with the circuit delay switching circuit of first kind of preferred implementation, and its load end passes through behind the coil of electric motor starting relay J 3 and positive supply+E
BConnect.Tongue tube 3 one lead-out terminals meet positive supply+E
B, another lead-out terminal is connected with the input of bistable switching circuit, delay switch circuit respectively.
Voltage transitions relay J 1 and J2 all have two normally opened contact groups, are respectively J1-1 and J1-2; J2-1 and J2-2.Wherein form the both positive and negative polarity that two wiring points are connected to driving power E among-2 groups of-2 groups of J1-1, J1 and J2-1, the J2 after the mutual interconnection of moving contact.And corresponding mutually back formation two lead-out terminals that are connected of fixed contact among-2 groups of-2 groups of J1-1, J1 and J2-1, the J2, wherein a lead-out terminal is connected with the binding post of motor M, another lead-out terminal is connected with the moving contact of electric motor starting relay J 3, and the fixed contact of electric motor starting relay J 3 then is connected with another binding post of motor M.
During the work of this preferred implementation, its circuit carries out voltage transitions and actuating motor M carries out synchronously.Its course of work is: when the triggering source of wheel 7---when magnet 2 was positioned near the tongue tube 3, tongue tube 3 conductings were with positive supply+E
BVoltage be added to the input (trigger end) of bistable circuit, impel the bistable circuit upset, so voltage transitions relay J 1 outage in the bistable circuit, J2 energising, the voltage commutation of driving power E.Simultaneously, positive supply+E
BVoltage be added to the input of delay switch circuit, the normally opened contact closure of relay J 3 is added to motor M with synchronizing voltage after the above-mentioned commutation like this, rotates so motor M work done immediately promotes wheel 7.In the time of near the magnet on the wheel 72 turns to 1/4 c of its movement locus line or d, delay switch circuit outage, wheel rely on inertia to continue upwards swing, when being rocked to end points b ' or a ' time that magnet 2 is positioned at its movement locus line, the wheel backswing, thus duty cycle next time begun.In this preferred implementation, mainly decide owing to act on the pulse duration of the lock-out pulse voltage on the motor M, so the length of its magnet 2 can not considered by the delay time of delay switch circuit.
Certainly, the present invention not only is confined to above-mentioned embodiment.Can also adopt devices such as optoelectronic switch as position transducer, when position transducer adopted the correlation optoelectronic switch, the triggering source on its wheel should be light-emitting diode; If reflective photoelectric switch, the triggering source on its wheel should be light reflection mirror or shadow shield.In addition, in drive circuit, its delay switch circuit also can adopt more exact figure delay switch circuit or other applied delay switch circuit, its relay can be replaced by elements such as controllable silicon, high-power switch tubes, and perhaps its delay switch circuit and relay can be replaced by the whole time relay by the energy delay cut-off.Therefore; it should be appreciated by those skilled in the art; under the guide of the present invention's design; the circuit form of implementing technical solution of the present invention is too numerous to enumerate; and the modification of its circuit or the replacement of components and parts all are predictable, and therefore such execution mode belongs in protection scope of the present invention too.
Claims (7)
1. electric swinging caster wheel, comprise motor, wheel, the stator of described motor is fixed on the trundle bracket, it is characterized in that being eccentrically set on the rotor of motor at described wheel, on wheel, be fixed with the triggering source, be provided with at least one position transducer near triggering source movement trajectory, this position transducer is fixed on the trundle bracket; The output of described position transducer is connected with drive circuit, and the output of drive circuit is connected with motor; The position signalling that position transducer will trigger the source flows to drive circuit, and drive circuit produces a lock-out pulse voltage thus, and then this lock-out pulse voltage freely swings direction in the same way by the torque direction and the wheel of motor.
2. electric swinging caster wheel according to claim 1, it is characterized in that at described position transducer be tongue tube, wherein a tongue tube is provided with near the arbitrfary point of triggering between the source movement trajectory end points to 1/4, and another tongue tube is arranged near the mid point of movement locus line.
3. electric swinging caster wheel according to claim 1 and 2, it is characterized in that comprising delay switch circuit at described drive circuit, voltage transitions relay and electric motor starting relay, the wherein coil of electric motor starting relay and the both positive and negative polarity that is connected to power supply after tongue tube is connected, the input of described delay switch circuit connects positive source through another tongue tube, and its load end connects positive source through the coil of voltage transitions relay, the fixed contact of described voltage transitions relay intersects to connecting the both positive and negative polarity that back formation two wiring points are connected to driving power, and a moving contact of voltage transitions relay is connected with a binding post of motor, another moving contact is connected with the moving contact of electric motor starting relay, and the fixed contact of electric motor starting relay then is connected with another binding post of motor.
4. electric swinging caster wheel according to claim 1 is characterized in that at described position transducer be tongue tube, and this tongue tube is arranged near the mid point of movement locus line.
5. according to claim 1 or 4 described electric swinging caster wheels, it is characterized in that comprising bistable switching circuit at described drive circuit, delay switch circuit and electric motor starting relay, described bistable switching circuit, the input of delay switch circuit connects positive source through tongue tube, the load end of described delay switch circuit connects positive supply through the coil of electric motor starting relay, respectively the hang oneself coil of voltage transitions relay of the collector electrode of two triodes connects negative supply in the described bistable switching circuit, form the both positive and negative polarity that two wiring points are connected to driving power after the mutual interconnection of the moving contact of described two voltage transitions relays, and the corresponding mutually back that connects of the fixed contact of two voltage transitions relays forms two lead-out terminals, wherein a lead-out terminal is connected with a binding post of motor, another lead-out terminal is connected with the moving contact of electric motor starting relay, and the fixed contact of electric motor starting relay then is connected with another binding post of motor.
6. according to claim 1 or 2 or 4 described electric swinging caster wheels, it is characterized in that at described position transducer can also be Hall switch or optoelectronic switch.
7. according to claim 1 or 2 or 4 described electric swinging caster wheels, it is characterized in that in described triggering source it being magnet or light-emitting diode or light reflection mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101688038A CN101459361A (en) | 2007-12-10 | 2007-12-10 | Electric swinging caster wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101688038A CN101459361A (en) | 2007-12-10 | 2007-12-10 | Electric swinging caster wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101459361A true CN101459361A (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101688038A Pending CN101459361A (en) | 2007-12-10 | 2007-12-10 | Electric swinging caster wheel |
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| Country | Link |
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| CN (1) | CN101459361A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2675653A2 (en) * | 2011-02-14 | 2013-12-25 | Android Industries LLC | Chassis |
| CN105534174A (en) * | 2016-02-01 | 2016-05-04 | 白牧 | Child swing bed |
-
2007
- 2007-12-10 CN CNA2007101688038A patent/CN101459361A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2675653A2 (en) * | 2011-02-14 | 2013-12-25 | Android Industries LLC | Chassis |
| EP2675653A4 (en) * | 2011-02-14 | 2014-08-13 | Android Ind Llc | Chassis |
| US8910733B2 (en) | 2011-02-14 | 2014-12-16 | Android Industries Llc | Chassis for a vehicle |
| US9561805B2 (en) | 2011-02-14 | 2017-02-07 | Android Industries Llc | Chassis |
| CN105534174A (en) * | 2016-02-01 | 2016-05-04 | 白牧 | Child swing bed |
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Open date: 20090617 |