CN103840603A - Driving device - Google Patents
Driving device Download PDFInfo
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- CN103840603A CN103840603A CN201210486476.1A CN201210486476A CN103840603A CN 103840603 A CN103840603 A CN 103840603A CN 201210486476 A CN201210486476 A CN 201210486476A CN 103840603 A CN103840603 A CN 103840603A
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Abstract
The invention provides a driving device. The driving device comprises a shell, a motor fixed to the shell, a worm driven by the motor, and a worm gear which is accommodated in the shell and is meshed with the worm so as to output a power. The driving device also includes an engaging member and a driver which is fixed to the shell; the engaging member is provided with an engaging part which is engaged with the worm or the worm gear; the engaging member is driven by the driver to move to a first position where the engaging part is engaged with the worm or the worm gear and the engaging part does not rotate; and the engaging member can be driven to move to a second position where the engaging part is separated from the worm or the worm gear. The engaging part and the engaging member are engaged so as to ensure that the external force cannot cause the worm to rotate; and the effective locking effect is realized.
Description
Technical field
The present invention relates to drive unit, relate in particular to a kind of drive unit with lock function.
Background technology
Drive unit, such as generally include a shell and an accommodating motor, a worm screw being driven by motor and a worm gear by worm drive in the enclosure for the drive unit that drives vehicle window.Worm gear can be connected to vehicle window by a gear box again, and so, under the driving of motor forward or reversion, vehicle window just can move to completely and opens, closes completely or any position between the two.In existing drive unit, in order to improve transmission efficiency, tend to the worm screw that uses the angle of rifling larger.But along with the increase of the angle of rifling, the self-lock ability of worm and gear but can be along with decline, this causes external force just can open or close very easily vehicle window, hides some dangers for to the theftproof performance of automobile.
Summary of the invention
In view of this, be necessary the drive unit that provides a kind of locking effect good.
A kind of drive unit, the worm screw that comprise shell, be fixed to the motor of this shell, is driven by this motor and being contained in this shell with this worm engaging and for the worm gear of outputting power.This drive unit also comprises joggle piece and is fixed to the driver of this shell, this joggle piece has the engaging piece that can engage with this worm screw or worm gear, this joggle piece can move to this engaging piece and engage with this worm screw or worm gear under the driving of this driver, and the primary importance that this engaging piece does not rotate, and the second place that this engaging piece separates with this worm screw or worm gear.
Preferably, the screw thread of this worm screw is 2, and helical angle is between 7 to 15 degree
Preferably, the screw thread of this worm screw is 3, and helical angle is between 15 to 25 degree.
Preferably, this joggle piece and this worm engaging, on this engaging piece, offer multiple for this worm screw on the groove of screw-threaded engagement.
Preferably, this drive unit comprises the electromagnetism portion of being made and can be produced along the axially movable movable part of this drive unit, the elastic component that connects this movable part and when energising magnetic force by permeability magnetic material, and this joggle piece is fixed to this movable part; This elastic component is for keeping this joggle piece to be positioned at a position of this first and second position, and this electromagnetism portion is for driving this movable part to overcome the elastic force of this elastic component and making this joggle piece remain on the another location of this first and second position.
Preferably, this electromagnetism portion comprises by permeability magnetic material to be made and is fixed to the housing of this shell and be fixed to the coil of this inner walls, this movable part part is surrounded by this coil, this elastic component one end supports this movable part and the relative other end supports the side of this housing away from this screw rod, this elastic component this joggle piece during in the first state in nature or compressive state, and this joggle piece during in the second state in compressive state.
Preferably, this drive unit also comprises the coil holder of tubulose, and this coil winding is to this coil holder and between this coil holder and this housing, and this movable part is contained at least partly in this coil holder and under the guiding of this coil holder and moves.
Preferably, this drive unit comprises motor that can bidirectional rotation, the movable part screwing togather by this motor-driven screw rod, with this screw rod and for guiding the guide post of moving direction of this movable part, this joggle piece is fixed to this movable part; When this motor rotation, this movable part can drive this joggle piece to move to this first and second position under the guiding of this guide post.
Preferably, this drive unit comprise along the radial polarization permanent magnet of this actuator, by permeability magnetic material make and can be along the axially movable movable part of this drive unit, connect the elastic component of this movable part and surround the coil of this movable part, this joggle piece is fixed to this movable part; This permanent magnet or elastic component can keep this joggle piece in first or the second place, when the electric current of the logical different directions of this coil, can make this joggle piece change between above-mentioned two positions.
Preferably, this drive unit is driven by a drive circuit, this drive circuit is for being connected to outside DC power supply, and comprises some switches and a lc circuit of connecting with this DC power supply, and this coil passes through this switch in parallel to the electric capacity in this lc circuit.
Preferably, this permanent magnet is positioned at a side of this movable part on the axial direction of this drive unit.
Preferably, this permanent magnet comprises the Part I that surrounds this coil.
Preferably, this permanent magnet also comprises the Part II between this movable part and this shell.
Preferably, this drive unit also comprises the coil holder of housing and tubulose, this coil winding is to this coil holder, and this coil holder is fixed to this inner walls and this coil clamp is located between this coil holder and this housing, and this movable part part is contained in this coil holder and under the guiding of this coil holder and moves.
Preferably, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward near this shell one end at this main part, this elastic component one end is fixed to this housing and is fixed to this movable part one end away from this shell away from one end and the other end of this shell, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is stretched, and this joggle piece this support division in the time of this second place supports this coil holder and this elastic component in nature or extended state.
Preferably, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward near this shell one end at this main part, this elastic component one end is fixed to this housing and is fixed to this movable part one end near this shell near one end and the other end of this shell, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is compressed, and this joggle piece this support division in the time of this second place supports this coil holder and this elastic component in nature or compressive state.
Preferably, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward away from this shell one end at this main part, these elastic component two ends support respectively this coil holder and this support division, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is compressed, this joggle piece this support division in the time of this second place support this housing away from the base plate of this shell and this elastic component in nature or compressive state.
Preferably, this drive unit comprises a housing that is fixed to this shell, two being axially fixed in this housing that the permanent magnet of both sides relatively, are made up of permeability magnetic material and can along interval in the axially movable movable part of this drive unit and two axial direction at this drive unit, the coil that also all surrounds this movable part, this joggle piece and this movable part synchronizing moving being set between these two permanent magnets along this drive unit; The relative two ends of this movable part are respectively by the permanent magnet near this shell and while adsorbing away from the permanent magnet of this shell, and this joggle piece lays respectively at this primary importance and this second place.
Preferably, this drive unit is driven by a drive circuit, this drive circuit is for being connected to outside DC power supply, and comprises some switches and a lc circuit of connecting with this DC power supply, and this coil passes through this switch in parallel to the electric capacity in this lc circuit.
Preferably, this joggle piece is positioned under the state of this second place, during away from the coil electricity of this shell, the direction in magnetic field and the opposite direction in the magnetic field of the permanent magnet away from this shell that this movable part produces also makes the permanent magnet of close this shell than large to the attraction of this movable part away from the permanent magnet of this shell, adsorbs this movable part makes this joggle piece move to this primary importance near the permanent magnet of this shell; This joggle piece is positioned under the state of this primary importance, during near the coil electricity of this shell, the opposite direction in the direction in the magnetic field that this movable part produces and the magnetic field of the permanent magnet near this shell also makes away from the permanent magnet of this shell greatlyr to the attraction of this movable part than the permanent magnet near this shell, adsorbs this movable part make this joggle piece move to this second place away from the permanent magnet of this shell.
Preferably, in the process moving to this primary importance from this second place at this joggle piece, the coil electricity of close this shell also makes this movable part produce the magnetic field identical with the magnetic direction of the permanent magnet near this shell; In the process moving to this second place from this primary importance at this joggle piece, away from the coil electricity of this shell and make this movable part produce the magnetic field identical with the magnetic field of the permanent magnet away from this shell.
Preferably, this drive circuit is connected in parallel to the first switch and the second switch of this electric capacity after also comprising series connection, and after series connection, is connected in parallel to the 3rd switch and the 4th switch of this electric capacity; The two ends of these two coils are connected to respectively between this first and second switch and between the 3rd volume of the 4th switch, and the magnetic direction producing when this two coil electricities is identical.
In the present invention, even if there is external force transmission to be applied to worm gear or worm screw, due to joggle piece and the effect of engaging of worm screw or worm gear, now worm gear or worm screw also can not be rotated, and effectively play locking effect.So, can use the worm and gear that transmission efficiency is higher by drive unit of the present invention.
In order further to understand feature of the present invention and technology contents, refer to following about detailed description of the present invention and accompanying drawing, but institute's accompanying drawing only provide with reference to and explanation use, be not used for the present invention to be limited.
Brief description of the drawings
Fig. 1 is the cross-sectional schematic of the drive unit of first embodiment of the invention.
Fig. 2 is the drive circuit figure of the drive unit of Fig. 1.
Fig. 3 is the driving sequential chart of the drive circuit of Fig. 2.
Fig. 4 is the cross-sectional schematic of the drive unit of Fig. 1 while being positioned at another state.
Fig. 5 is the cross-sectional schematic of the driver of the drive unit of second embodiment of the invention.
Fig. 6 is the drive circuit figure of the drive unit of Fig. 5.
Fig. 7 is the driving sequential chart of the drive circuit of Fig. 6.
Fig. 8 is the cross-sectional schematic of the driver of the drive unit of third embodiment of the invention.
Fig. 9 is the drive circuit figure of the drive unit of Fig. 8.
Figure 10 is the cross-sectional schematic of the driver of the drive unit of four embodiment of the invention.
Figure 11 is the cross-sectional schematic of another execution mode of the driver of Figure 10.
Figure 12 is the cross-sectional schematic of the driver of the drive unit of fifth embodiment of the invention.
Figure 13 is the drive circuit figure of the drive unit of Figure 12.
Figure 14 is the cross-sectional schematic of the drive unit of Figure 12 while being positioned at another state.
Figure 15 is another drive circuit figure of the drive unit of Figure 12.
Embodiment
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technical scheme of the present invention and other beneficial effects apparent.Accompanying drawing only provides reference and explanation use, is not used for the present invention to be limited.The size showing in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
Refer to Fig. 1, for convenience of explanation, in following execution mode, drive unit is used for driving vehicle window.But be appreciated that and the invention is not restricted to this, such as also can be used for driving brake system etc.The drive unit 10 of first embodiment of the invention comprises that a shell 20, one are fixed to the motor 30 of shell 20, worm screw being driven by motor 30 40, worm gear engaging with worm screw 40 50, driver 70 and a joggle piece being driven by driver 70 60 that is fixed to shell 20.In the present embodiment, motor 30 comprise a cup-shaped motor shell 31, multiple be fixed to the permanent magnet 32 of motor shell 31 inwalls, multiple brush 33, one by two bearings 34 be mounted to the rotating shaft 35 of motor shell 31, stator core 36 that is fixed to rotating shaft 35, multiple coil (not shown) that is wound to stator core 36 and one be fixed to rotating shaft 35 and can with the commutator 37 of brush 33 sliding contacts.External dc power is loaded on each coil by brush 33 with contacting of commutator 37, thereby each coil produces and the interactional magnetic field of permanent magnet 32, and then maintains the forward or reverse of rotating shaft 35.In the present embodiment, worm screw 40 is formed at rotating shaft 35 and is positioned at the position outside motor shell 31, and motor shell 31 is fixed to shell 20 and worm screw 40 is contained in shell 20.Worm screw 40 can be mounted to shell 20 by a bearing 34 away from one end of motor shell 31, even eliminates contingent swing in worm screw 40 rotary courses thereby reduce.In the present embodiment, the screw thread of worm screw 40 is 2, and helical angle is between 7 to 15 degree, effectively to improve transmission efficiency; Or the screw thread of worm screw is 3, helical angle is between 15 to 25 degree, further effectively to improve transmission efficiency.Certainly, the helical angle of worm screw 40 and a number are not limited to above-mentioned cited.Worm gear 50 is contained in shell 20, is positioned at worm screw 40 1 sides and mediates with worm screw 40, and it can be connected to vehicle window by a gear box.So, in the time that worm gear 50 rotates under the drive of worm screw 40, just can drive vehicle window start.
Joggle piece 60 is roughly square, and has the engaging piece 62 that can engage with worm screw 40.Particularly, engaging piece 62 is for being opened in the groove of 60 1 lip-deep some inclinations of joggle piece, and groove is for the screw thread of accommodating worm screw 40.Driver 70 is an electromagnetically operated valve, specifically comprises a housing 71, coil holder 72, coil 73, guide pin bushing 74, movable part 75 and a spring 76.Housing 71 is made up of permeability magnetic material and it is roughly cup-shaped.Roughly in a tubular form, coil 73 is wrapped on coil holder 72 coil holder 72, and the coil holder 72 that is wound with coil 73 is contained in housing 71, and makes coil 73 conform to the inwall of housing 71.Roughly in a tubular form, it is housed in the position of housing 71 near its opening to guide pin bushing 74, and the internal diameter of guide pin bushing 74 is slightly larger than the external diameter of movable part 75.Movable part 75 is made up of permeability magnetic material, it is roughly on strip and its and is formed with hierarchic structure, the part that movable part 75 external diameters are less is housed in coil holder 72, and external diameter major part extends to outside housing 71 through guide pin bushing 74, so, movable part 75 can be under the guiding of guide pin bushing 74 moving axially along driver 70.Spring 76 is contained in coil holder 72, and its two ends are respectively against the ladder place of base plate and the movable part 75 of housing 71.On shell 20, offer the through hole 22 that is positioned at worm screw 40 1 sides, joggle piece 60 is fixed to movable part 74 one end away from housing 72 bottoms, and one end that housing 71 has opening is fixed to shell 20, and movable part 75 can be moved around in through hole 22.In the time that driver 70 is not switched on, under the effect of spring 76, engaging piece 62 engages with worm screw 40, and now joggle piece 60 is positioned at a primary importance, and spring 76 is in nature or confined state.
Please again in conjunction with Fig. 2 and Fig. 3, in the course of work, when motor 30 is not when start, there is no current load to driver 70, now joggle piece 60 is positioned at above-mentioned primary importance.Making motor 30 just transfer to apply before forward current to motor 30, can first apply the electric current as shown in the label A1 of Fig. 3 to the coil 73 of driver 70 by a sequential control circuit 12 control switch K5.Now there is magnetic at the effect lower house 71 of the coil 73 of switching on, and then attract movable part 74 to overcome the elastic force of spring 76 and move to the position of the base plate that supports housing 71, now engaging piece 62 separates with worm screw 40, and joggle piece 60 is positioned at a second place, as shown in Figure 4.Afterwards, sequential control circuit 12 loads the forward current as shown in the label A2 of Fig. 3 by control switch K1 to K4 to motor 30 again.After motor 30 stops loading the appropriate time of forward current, then stop to driver 70 loading currents, so can prevent that worm screw 40 from engaging with joggle piece 60 and sending larger sound in the time of rotation status.Now joggle piece 60 returns back to primary importance.The situation that loads reverse current to motor 30 is similar with the situation that loads forward current, does not repeat at this.
Be appreciated that spring 76 also can be in the state of being stretched during in primary importance at joggle piece 60, in this case, when joggle piece 60 remains on primary importance, coil 73 must keep energising.Be appreciated that therefore, guide pin bushing 74 also can arrange because through hole 22 has also played the axially movable effect along driver 70 of guiding joggle piece 60 and movable part 75.Coil holder 72 plays the effect of fixed coil 73, if but be appreciated that coil 73 is in other embodiments fixed to the inwall of housing, coil holder 72 also can arrange.In the above-mentioned course of work, as long as just owing to there being power supply to be loaded into adsorbable movable part 75 on driver 70, therefore, the direction of 70 loading currents of driver is also not limited to the forward current shown in Fig. 3.Be appreciated that spring 76 of the present invention can be also other elastic components, as long as just play same function can.
During the invention described above is implemented, joggle piece 60 only can move along the direction of vertical worm screw under the driving of this driver between primary importance and the second place, the limitation of movement system of other directions.
The difference of the drive unit of the drive unit of second embodiment of the invention and the first execution mode with driver.Incorporated by reference to Fig. 5, the driver 80 of invention the second execution mode is a motor and gear structure, specifically comprises a housing that is fixed to above-mentioned shell 20 81, motor 82, screw rod 83, movable part 84 and at least one guide post 85.Motor 82 is contained in housing 81 bottoms.Screw rod 83 is fixed to the rotating shaft of motor 82 and is approximately perpendicular to above-mentioned worm screw 40.Movable part 84 is a nut push rod, and it offers the screw thread screwing togather with screw rod 83, also offers at least one pilot hole along the direction of parallel screw 83.Guide post 85 can be fixed to motor 82 pilot hole through nut push rod 84, moves along the direction that is approximately perpendicular to above-mentioned worm screw 40 to play boot activity part 84.Joggle piece 60 is fixed to movable part 84 and is positioned at the one end within above-mentioned shell 20.Please again in conjunction with Fig. 6 and Fig. 7, in said motor 30, not start in the situation that, joggle piece 60 engages with worm screw 40, is positioned at above-mentioned primary importance, as shown in Figure 5.Apply before electric current to motor 30, first apply equally the reverse current A3 of a scheduled duration to the motor 82 of driver 80 by sequential control circuit 12 control switch K6 to K9, motor 82 is reversed, so, under the driving of screw rod 83 and the guiding of guide post 85, nut push rod 84 is to the reverse movement away from worm screw 40, and joggle piece 60 separates with worm screw 40, and joggle piece 60 is positioned at said second position.Now, sequential control circuit 12 loads forward current A4 by control switch K1 to K4 to motor 30 again.Stopping to postponing the regular hour after motor 30 loads forward current (forward current descending is along the time of experiencing), then controlling motor 82 and just going to joggle piece 60 and engage the primary importance of worm screw 40.
Incorporated by reference to Fig. 8, the driver 90 of third embodiment of the invention comprises a housing 91, two the first magnet 92, yoke 93, coil 94, coil holder 95, movable part 96, spring 97 and a push rod 98.Housing 91 is roughly cup-shaped, and one end of its opening is fixed to shell 20.Two the first magnet 92 are all curved, and it is oppositely arranged and is contained in housing 91.Yoke 93 roughly in a tubular form and be contained in two the first magnet 92.Coil 94 is wound to roughly coil holder 95 in a tubular form, and the coil holder 95 that is wound with coil 94 is contained in yoke 93.Movable part 96 is made up of permeability magnetic material and is roughly bolt shape, it comprises the main part and the support division that main part end face extends radially outward that are column, spring 97 is sheathed with the main part of movable part 96, this main part part is contained in coil holder 94, thereby the two ends that make spring 97 support respectively the support division of a side of coil holder 95 and movable part 96, and support division opposite side supports the base plate of housing 91.Push rod 98 is fixed to movable part 96 through yoke 93.Joggle piece 60 is fixed to push rod 98 and is positioned at the one end outside housing 91.
Present embodiment and the second execution mode driving sequential identical.Please again in conjunction with Fig. 9 and Fig. 6, in said motor 30, not start in the situation that, magnet 92 adsorbs movable part 96 by yoke 93, and spring 97 is in confined state, and the absorption affinity of magnet 92 is greater than the elastic force of spring 97, now joggle piece 60 is positioned at the primary importance engaging with worm screw 40.In the course of work, applying before forward current to motor 30, sequential control circuit 12 first applies a reverse current A3 by control switch K10 to K13 to the coil 94 of driver 90, make the field weakening that movable part 96 produces even offset the magnetic field of the first magnet 92, and make the elastic force of spring 97 be greater than the absorption affinity of magnet to movable part 96.So, movable part 96 is to the position that moves to the base plate that supports housing 91 away from the direction of above-mentioned worm screw 40, and now joggle piece 60 is positioned at said second position.In the time that the electric current A3 that is applied to driver 90 disconnects, due to movable part 96 now from the distance of magnet 92 relatively away from, the elastic force of spring 97 is greater than the attraction of magnet 92, so, joggle piece 60 remains on the second place separating with worm screw 40.Disconnect and postpone after the regular hour at the forward current that is loaded on motor 30, apply a forward current A5 to strengthen the magnetic field of magnet 92 to coil 94 again, so, coil 94 is greater than the elastic force of spring 97 to the absorption affinity of movable part 96 and movable part 96 is absorbed with the stack magnetic field of magnet 92, and now joggle piece 60 returns back to the above-mentioned primary importance engaging with worm screw 40.In the time that the electric current A5 that is applied to driver 90 disconnects, due to movable part 96 now from the distance of magnet 92 relatively close to, the elastic force of spring 97 is less than the attraction of magnet 92, so, joggle piece 60 these second places.
Preferably, also comprise a lc circuit of connecting with power supply in the drive circuit of driver 90, K switch 10 is connected in parallel to capacitor C two ends after connecting with K11, and K switch 12 is also connected in parallel to capacitor C two ends after connecting with K13.So, when to driver 90 loading current, due to the existence of capacitor C, the sudden change of supply voltage can effectively be reduced.
Preferably, driver 90 also comprises that one connects two the first magnet 92 and the second magnet 99 between the first magnet 92 and shell 20.Now yoke 93 is roughly cup-shaped.The second magnet 99 can effectively strengthen the magnetic attraction to movable part 96.
In above-mentioned the 3rd execution mode, magnet surrounds coil, and the whether identical magnetic field that strengthens or offset magnet by control coil magnetic direction with magnetic field of magnets direction, to control the activity of movable part 96.But the position relationship that is appreciated that magnet and coil is not limited to this.Such as, in the drive unit incorporated by reference to the 4th execution mode shown in Figure 10, magnet 14 can be between movable part and shell, and spring 15 supports movable part 16, and coil 17 still surrounds movable part 16.Under this structure, magnet 14 can keep above-mentioned joggle piece 60 in primary importance, and spring 15 can keep above-mentioned joggle piece 60 in the second place, when the electric current of the logical different directions of coil 17, can make joggle piece change between above-mentioned two positions.Certainly can understand, spring also can be arranged on housing opposite side, as shown in figure 11; Magnet 14 also can be arranged on housing opposite side.
Incorporated by reference to 12, the driver 100 of fifth embodiment of the invention comprises that a housing 101, two are separately fixed at the magnet 102 and 103 of housing 101 interior relative both sides, two and are disposed on coil 104 and 105 in the middle of housing 101, cross section and are roughly " work " font and are fixed to movable part 106 and extend to the push rod 107 outside housing 101 through the movable part 106 of two coils and one.The relative magnet 103 of magnet 102 is near above-mentioned worm screw 40, and the relative coil 105 of coil 104 is relatively near worm screw 40.The side that push rod 107 is positioned at outside housing 101 is fixed to above-mentioned joggle piece 60.
Present embodiment and the second execution mode driving sequential identical.Incorporated by reference to Figure 13 and Fig. 6, in said motor 30 not start in the situation that, two equal no powers of coil, movable part 106 is adsorbed to magnet 102, and now joggle piece 60 is positioned at the primary importance engaging with worm screw 40, and the state of driver 100 is as shown in figure 12.In the course of work, apply before electric current to motor 30, sequential control circuit 12 is first by 104 power-off of control switch K15 control coil, switch on by control switch K14 control coil 104, and the magnetic direction that coil 104 produces by movable part 106 is contrary with the magnetic direction of magnet 102, to offset the attraction of magnet 102 to movable part 106.Now, under the attraction of magnet 103, movable part 106 moves and is finally adsorbed by magnet 103 to magnet 103, as shown in figure 14.So, joggle piece 60 is positioned at the second place separating with worm screw 40.Stopping after the 30 confession electric delay regular hours of motor, control coil 104 power-off, coil 105 is switched on, and the magnetic direction that coil 105 produces by movable part 106 is contrary with the magnetic direction of magnet 103, to offset the attraction of magnet 103 to movable part 106.So, movable part 106 is adsorbed by magnet 102, returns back to state shown in Figure 12, and joggle piece 60 is positioned at the primary importance engaging with worm screw 40.
Driver 100 also can drive by the drive circuit shown in Figure 15, and the main distinction of this circuit and aforementioned drive circuit is, two coils 104 and 105 are connected in parallel between four K switch 16 to K19 of controlling the senses of current.In the course of work, when driver 100 is in the state as shown in 14, and sequential control circuit 12 is while loading forward current by K switch 16 to K19 to coil 104 and 105, coil 104 magnetic direction that movable part 106 produces is excessively identical with the magnetic direction of magnet 102, and the magnetic direction that coil 105 produces by movable part 106 is contrary with the magnetic direction of magnet 103, so, movable part 106 is adsorbed by magnet 102 and moves to state as shown in figure 12, and joggle piece 60 is positioned at the primary importance engaging with worm screw 40.On the contrary, when driver 100 is in the state as shown in 12, and sequential control circuit 12 is while loading reverse current by K switch 16 to K19 to coil 104 and 105, coil 104 magnetic direction that movable part 106 produces is excessively contrary with the magnetic direction of magnet 102, and the magnetic direction that coil 105 produces by movable part 106 is identical with the magnetic direction of magnet 103, so, movable part 106 is adsorbed by magnet 103 and moves to state as shown in figure 14, and joggle piece 60 is positioned at the second place separating with worm screw 40.
In the respective embodiments described above, due to the effect of joggle piece 60, in the time of its primary importance in engaging with worm screw 40, the external force that is enough to if having worm gear 50 is rotated is applied to vehicle window, and because fixed joggle piece 60 is engaged to worm screw 40, now worm screw 40 can not be rotated, that is to say, under the effect of joggle piece 60 engages worm 40, external force cannot mobile vehicle window, effectively plays locking effect.So, can use the worm and gear that transmission efficiency is higher.Be appreciated that joggle piece 60 also can engage with worm gear 50.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (22)
1. a drive unit, the worm screw that comprise shell, be fixed to the motor of this shell, is driven by this motor and being contained in this shell with this worm engaging and for the worm gear of outputting power, it is characterized in that: this drive unit also comprises joggle piece and is fixed to the driver of this shell, this joggle piece has the engaging piece that can engage with this worm screw or worm gear, this joggle piece can move to this engaging piece and engage primary importance with this worm screw or worm gear under the driving of this driver, and the second place that this engaging piece separates with this worm screw or worm gear.
2. drive unit as claimed in claim 1, is characterized in that, the screw thread of this worm screw is 2, and helical angle is between 7 to 15 degree, or the screw thread of this worm screw is 3, and helical angle is between 15 to 25 degree.
3. drive unit as claimed in claim 1, is characterized in that, this joggle piece only can move along the direction of vertical worm screw under the driving of this driver between primary importance and the second place.
4. drive unit as claimed in claim 1, is characterized in that, this joggle piece and this worm engaging, on this engaging piece, offer multiple for this worm screw on the groove of screw-threaded engagement.
5. the drive unit as described in claim 1 to 4 any one, it is characterized in that, this drive unit comprises the electromagnetism portion of being made and can be produced along the axially movable movable part of this drive unit, the elastic component that connects this movable part and when energising magnetic force by permeability magnetic material, and this joggle piece is fixed to this movable part; This elastic component is for keeping this joggle piece to be positioned at a position of this first and second position, and this electromagnetism portion is for driving this movable part to overcome the elastic force of this elastic component and making this joggle piece remain on the another location of this first and second position.
6. drive unit as claimed in claim 5, it is characterized in that, this electromagnetism portion comprises by permeability magnetic material to be made and is fixed to the housing of this shell and be fixed to the coil of this inner walls, this movable part part is surrounded by this coil, this elastic component one end supports this movable part and the relative other end supports the side of this housing away from this screw rod, this elastic component this joggle piece during in the first state in nature or compressive state, and this joggle piece during in the second state in compressive state.
7. drive unit as claimed in claim 6, it is characterized in that, this drive unit also comprises the coil holder of tubulose, and this coil winding is to this coil holder and between this coil holder and this housing, and this movable part is contained at least partly in this coil holder and under the guiding of this coil holder and moves.
8. the drive unit as described in claim 1 to 4 any one, it is characterized in that, this drive unit comprises motor that can bidirectional rotation, the movable part screwing togather by this motor-driven screw rod, with this screw rod and for guiding the guide post of moving direction of this movable part, this joggle piece is fixed to this movable part; When this motor rotation, this movable part can drive this joggle piece to move to this first and second position under the guiding of this guide post.
9. drive unit as claimed in claim 1, it is characterized in that, this drive unit comprise along the radial polarization permanent magnet of this actuator, by permeability magnetic material make and can be along the axially movable movable part of this drive unit, connect the elastic component of this movable part and surround the coil of this movable part, this joggle piece is fixed to this movable part; This permanent magnet or elastic component can keep this joggle piece in first or the second place, when the electric current of the logical different directions of this coil, can make this joggle piece change between above-mentioned two positions.
10. drive unit as claimed in claim 9, it is characterized in that, this drive unit is driven by a drive circuit, this drive circuit is for being connected to outside DC power supply, and comprise some switches and a lc circuit of connecting with this DC power supply, this coil by this switch in parallel to the electric capacity in this lc circuit.
11. drive units as claimed in claim 9, is characterized in that, this permanent magnet is positioned at a side of this movable part on the axial direction of this drive unit.
12. drive units as claimed in claim 9, is characterized in that, this permanent magnet comprises the Part I that surrounds this coil.
13. drive units as claimed in claim 12, is characterized in that, this permanent magnet also comprises the Part II between this movable part and this shell.
14. drive units as described in claim 9 to 13 any one, it is characterized in that, this drive unit also comprises the coil holder of housing and tubulose, this coil winding is to this coil holder, this coil holder is fixed to this inner walls and this coil clamp is located between this coil holder and this housing, and this movable part part is contained in this coil holder and under the guiding of this coil holder and moves.
15. drive units as claimed in claim 14, it is characterized in that, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward near this shell one end at this main part, this elastic component one end is fixed to this housing and is fixed to this movable part one end away from this shell away from one end and the other end of this shell, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is stretched, this joggle piece this support division in the time of this second place supports this coil holder and this elastic component in nature or extended state.
16. drive units as claimed in claim 14, it is characterized in that, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward near this shell one end at this main part, this elastic component one end is fixed to this housing and is fixed to this movable part one end near this shell near one end and the other end of this shell, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is compressed, this joggle piece this support division in the time of this second place supports this coil holder and this elastic component in nature or compressive state.
17. drive units as claimed in claim 14, it is characterized in that, this movable part comprises the main part being contained in this coil holder and the support division extending radially outward away from this shell one end at this main part, these elastic component two ends support respectively this coil holder and this support division, this joggle piece this support division in the time of this primary importance is adsorbed to this permanent magnet and this elastic component is compressed, this joggle piece this support division in the time of this second place support this housing away from the base plate of this shell and this elastic component in nature or compressive state.
18. drive units as claimed in claim 1, it is characterized in that, this drive unit comprises a housing that is fixed to this shell, two being axially fixed in this housing that the permanent magnet of both sides relatively, are made up of permeability magnetic material and can along interval in the axially movable movable part of this drive unit and two axial direction at this drive unit, the coil that also all surrounds this movable part, this joggle piece and this movable part synchronizing moving being set between these two permanent magnets along this drive unit; The relative two ends of this movable part are respectively by the permanent magnet near this shell and while adsorbing away from the permanent magnet of this shell, and this joggle piece lays respectively at this primary importance and this second place.
19. drive units as claimed in claim 18, it is characterized in that, this drive unit is driven by a drive circuit, this drive circuit is for being connected to outside DC power supply, and comprise some switches and a lc circuit of connecting with this DC power supply, this coil by this switch in parallel to the electric capacity in this lc circuit.
20. drive units as described in claim 18 to 19 any one, it is characterized in that, this joggle piece is positioned under the state of this second place, during away from the coil electricity of this shell, the direction in magnetic field and the opposite direction in the magnetic field of the permanent magnet away from this shell that this movable part produces also makes the permanent magnet of close this shell than large to the attraction of this movable part away from the permanent magnet of this shell, adsorbs this movable part makes this joggle piece move to this primary importance near the permanent magnet of this shell; This joggle piece is positioned under the state of this primary importance, during near the coil electricity of this shell, the opposite direction in the direction in the magnetic field that this movable part produces and the magnetic field of the permanent magnet near this shell also makes away from the permanent magnet of this shell greatlyr to the attraction of this movable part than the permanent magnet near this shell, adsorbs this movable part make this joggle piece move to this second place away from the permanent magnet of this shell.
21. drive units as claimed in claim 20, it is characterized in that, in the process moving to this primary importance from this second place at this joggle piece, the coil electricity of close this shell also makes this movable part produce the magnetic field identical with the magnetic direction of the permanent magnet near this shell; In the process moving to this second place from this primary importance at this joggle piece, away from the coil electricity of this shell and make this movable part produce the magnetic field identical with the magnetic field of the permanent magnet away from this shell.
22. drive units as claimed in claim 21, is characterized in that, this drive circuit is connected in parallel to the first switch and the second switch of this electric capacity after also comprising series connection, and after series connection, are connected in parallel to the 3rd switch and the 4th switch of this electric capacity; The two ends of these two coils are connected to respectively between this first and second switch and between the 3rd volume of the 4th switch, and the magnetic direction producing when this two coil electricities is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486476.1A CN103840603A (en) | 2012-11-26 | 2012-11-26 | Driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210486476.1A CN103840603A (en) | 2012-11-26 | 2012-11-26 | Driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840603A true CN103840603A (en) | 2014-06-04 |
Family
ID=50803831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210486476.1A Pending CN103840603A (en) | 2012-11-26 | 2012-11-26 | Driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840603A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105337439A (en) * | 2014-06-09 | 2016-02-17 | 德昌电机(深圳)有限公司 | Driving apparatus and motor thereof |
| CN107496089A (en) * | 2017-09-30 | 2017-12-22 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing for wheelchair |
| CN107647987A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of worm gearing for wheelchair |
| CN107979224A (en) * | 2016-10-25 | 2018-05-01 | 保时捷股份公司 | Driving device |
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| JP2006117037A (en) * | 2004-10-20 | 2006-05-11 | Toyota Motor Corp | Vehicular steering system |
| CN201515289U (en) * | 2009-09-23 | 2010-06-23 | 中山大洋电机股份有限公司 | Motor drive system |
| CN102463572A (en) * | 2010-11-08 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Power switcher |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006117037A (en) * | 2004-10-20 | 2006-05-11 | Toyota Motor Corp | Vehicular steering system |
| CN201515289U (en) * | 2009-09-23 | 2010-06-23 | 中山大洋电机股份有限公司 | Motor drive system |
| CN102463572A (en) * | 2010-11-08 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Power switcher |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105337439A (en) * | 2014-06-09 | 2016-02-17 | 德昌电机(深圳)有限公司 | Driving apparatus and motor thereof |
| CN105337439B (en) * | 2014-06-09 | 2019-03-15 | 德昌电机(深圳)有限公司 | Driving device and its motor |
| CN107979224A (en) * | 2016-10-25 | 2018-05-01 | 保时捷股份公司 | Driving device |
| CN107496089A (en) * | 2017-09-30 | 2017-12-22 | 常熟市平方轮椅有限公司 | A kind of controllable worm gearing for wheelchair |
| CN107647987A (en) * | 2017-09-30 | 2018-02-02 | 常熟市平方轮椅有限公司 | A kind of worm gearing for wheelchair |
| CN110381903A (en) * | 2017-09-30 | 2019-10-25 | 常熟市平方轮椅有限公司 | A kind of worm gearing for wheelchair |
| CN110381903B (en) * | 2017-09-30 | 2020-07-28 | 台州昉创科技有限公司 | Worm transmission mechanism for wheelchair |
| CN107647987B (en) * | 2017-09-30 | 2023-11-24 | 美而特智能后勤服务有限公司 | Worm transmission mechanism for wheelchair |
| CN107496089B (en) * | 2017-09-30 | 2023-12-01 | 安徽未易智能科技有限公司 | Adjustable worm transmission mechanism for wheelchair |
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