CN103110989A

CN103110989A - Structure-compact-type reciprocating aspirator and breast pump

Info

Publication number: CN103110989A
Application number: CN2013100577419A
Authority: CN
Inventors: 郭永风
Original assignee: 郭永风
Current assignee: Zhangjiagang Leyu science and Technology Innovation Park Investment Development Co.,Ltd.
Priority date: 2013-02-25
Filing date: 2013-02-25
Publication date: 2013-05-22
Anticipated expiration: 2033-02-25
Also published as: CN103110989B

Abstract

The invention discloses a structure-compact-type reciprocating aspirator and breast pump. The structure-compact-type reciprocating aspirator is applied to the field needing small-displacement vacuum aspiration, a power motor unit used for providing original moment and an air cylinder driving unit used for converting power into internal capacity deformation to output suction force are parallelly arranged on a same side face of a gear transmission unit used for performing speed reduction and reversing to the original moment and connected with the same, the gear transmission unit and a synchronous belt transmission mechanism are integrally designed in a same gearbox, large suction force and high efficiency functions are realized while the volume is reduced by a half compared with same level in the prior art, and the objective of portability is realized; and the structure-compact-type reciprocating aspirator is firm and reliable in structure, and the design of multiple damping and noise reducing is applied to realize muting effect.

Description

The reciprocal aspirator of a kind of compact conformation formula and breast pump

Technical field

The present invention relates to the reciprocal aspirator of a kind of compact conformation formula and breast pump, relate in particular to by cylinder piston and move back and forth the electrical suction unit of the compact conformation that produces suction and use the breast pump of this aspirator.

Background technology

Reciprocating motor aspirator (air-cylinder type electrical suction unit), the fields such as medical treatment, health care, beauty treatment that produce the small displacement vacuum at needs are just extensively used; Air-cylinder type breast pump for example, the suction that it produces by the reciprocating motor aspirator, the breast milk of balling-up in mammary gland, so that feeding baby, and because the cylinder piston of reciprocating motor aspirator moves back and forth the characteristic that produces intermittent suction effect, can be used for periodically inhaling when the simulation baby sucks breast milk and put effect, improve collection efficiency and comfort.As far back as 1854, USPO authorized. and the hand-operated breast pump patent of O.H. Needham (patent No. 11135), the basic element that as seen consists of breast pump comprises: can vacuum bellows, infundibulate breast cup and trachea.It is 1644257 that nineteen twenty-one Edward Lasker invention can be simulated its United States Patent (USP) number of breast pump that the baby sucks, be acknowledged as the practicality improvement and application of electric breast pump, the breast cup that is connected with the feeding bottle one and the check valve of isolating with milk are arranged in its technical scheme, adopt the air-cylinder type design.Eubar Egnell designed famous Egnell SMB electric breast pump in 1956, although this breast pump bulky continues into the present to still have on a small quantity and also using.

The breast pump type mainly is divided into rubber bowl type, vacuum pump type and air-cylinder type by the suction principle.Rubber bowl type is mainly used in type hand, and armrest is pinched or pulling of lever makes the distortion of glue bowl produce vacuum, and suction is little, and the effect that sucks is unreliable.The vacuum pump type is used for electric breast pump, and volume is little is major advantage, but it is little to aspirate volume, reach suction by accumulation vacuum, so efficient is low, and the suction comfort level is also bad.Air-cylinder type breast pump suction volume is large, suction is large, efficient is high, comfort level is good, but implementation structure is complicated.Air-cylinder type electrical suction unit in it is bulky, Portable belt not often, and mothers are often in the occasion of going out or working in the operation that sucks, so breast pump will really satisfy suckling mother's instructions for use, accomplish that suction is large, efficient is high, little side is ideal for volume.The breast pump technical development so far, basic element is finalized the design, more challenge is how to realize that minimum volume gives larger suction and efficient simultaneously, further challenge is to accomplish that low noise is noiseless, and possesses reliable service life.

Summary of the invention

The main technical problem to be solved in the present invention is, the reciprocal aspirator of a kind of compact conformation formula and breast pump are provided, and compact conformation is providing large suction and keeping having reduced small product size under high efficiency prerequisite.

For solving the problems of the technologies described above, the invention provides the reciprocal aspirator of a kind of compact conformation formula, thereby it comprises power supply, housing and is connected being used in this housing and the power motor unit that rotates original moment is provided, is used for connecting the rotation output of described power motor unit is slowed down with the gear transmission unit that be connected, is used for connecting the control circuit board that power output with described gear transmission unit is converted to the cylinder driving unit of self internal volume distortion output suction and is used for function control.Described power motor unit and described cylinder driving unit are the axis parallel arrangement side by side, and in the same side of gear transmission unit and be attached thereto, described gear transmission unit has commutation function, and described gear transmission unit has been wholely set reducing gear and synchronous belt drive mechanism.This design connects compact, conserve space, can reduce half volume than same level function prior art, and sound construction is reliable, can transmit high-powerly, and is beneficial to damping and noise reduction.

During enforcement, the present invention program, described power motor unit directly drives described cylinder driving unit by gear-box, need not belt mechanism slows down, the transmission changement is arranged in gear-box, thereby make power motor unit and described cylinder driving unit be side by side the axis parallel arrangement, thereby greatly reduce the width of main frame.

Described control circuit board is controlled the periodically forward and reverse output of power motor unit, thereby the periodicity that realizes cylinder driving unit is air-breathing and aerofluxus, and wherein control circuit board has namely determined to stroke and the speed controlling of power motor unit forward/counter-rotating dynamics and the speed that cylinder driving unit is air-breathing.

During enforcement, described gear transmission unit comprises be used to the gear-box of realizing described deceleration and commutation, is used for the synchronous belt drive mechanism as described gear transmission unit clutch end, and connects as one the Timing Belt support of locating described synchronous belt drive mechanism be used to being connected with described gear-box; Described synchronous belt drive mechanism comprises active synchronization belt wheel and the driven synchronous pulley that synchronous cog belt and this synchronous cog belt coordinate, the clutch end of the described gear-box of described active synchronization belt wheel access.This structure has effectively realized deceleration and the commutation to power motor unit outputting power, and realizing that high-power transmission simultaneously, guaranteed compact conformation, being applied as of synchronous belt drive mechanism provides the buffering transition in drive path, guaranteeing that effective transmission has improved the reliability of drive mechanism simultaneously, and realizing the buffering to vibrations, noise and positive drive.

During enforcement, described gear-box comprises helical gears, the first duplicate gear, the second duplicate gear and the conical gear of engagement successively, wherein helical gears, the first duplicate gear, the second double crosslinking gear shaft line parallel setting and be the deceleration fit structure, described conical gear coordinate with described the second vertical setting of duplicate gear axis and by the cone tooth and realize that transmission commutates.Described gear-box also comprises the power output shaft that is used as described clutch end; Described conical gear is fixed on an end of this power output shaft.

The power output of the described gear-box of described active synchronization belt wheel access refers to that the active synchronization belt wheel of described synchronous belt drive mechanism also is fixed on this power output shaft.Helical gears are used, make have between gear that overlap coefficient is large, stable drive, the strength of gear teeth are high, can bear heavy duty advantage, because input (helical gears place) needs frequently commutation, therefore can significantly reduce vibrations and noise.The application of conical gear also is connected with synchronous pulley, is realizing that commutation has guaranteed compact conformation simultaneously.

During enforcement, described the first duplicate gear and the second duplicate gear are spacing in described gear-box by the first gear shaft and the second gear shaft respectively; Described the first gear shaft is provided with soft packing ring near described helical gears one end, and described the first gear shaft is provided with elastic washer, steel washer and soft packing ring successively away from described helical gears one end ecto-entad; Wherein cushion encloses the left and right of cushioning and filling up the gap, and the adjacent elastic washer of steel washer consists of supporting surface, and soft packing ring and Gear Contact play the wear-resistant effect that reduces to rub that undermines.

Described the second gear shaft is provided with away from described conical gear one end the end face sliding bearing of being close to gear face, described end face sliding bearing concentric locking collar is on the second gear shaft and be engaged on the internal box sidewall of described gear-box, be provided with in the described gear-box outside to should the end face sliding bearing the radial reinforcement plate structure of installation position.The end face sliding bearing reduces friction, improves reliability, strengthens gusset and strengthens structural strength and reduce vibrations.

During enforcement, described gear-box includes gear box casing.Described gear box casing and described Timing Belt support are structure as a whole, with conserve space, this integrative-structure is formed by the first half housings and the second half housing amalgamations, and described the first half housings and the second half housings are described integrative-structure along the perpendicular segmenting structure at described power output shaft axis place.The amalgamation structure of this gear box casing is convenient to the assembling of gear and each driving member, and has guaranteed the stable connection of amalgamation face.

During enforcement, described motor body is a plane by output end, and round boss is arranged on the plane; Described gear-box is provided with the motor connecting end surface adaptive with the described plane of motor, is provided with the circular hole adaptive with described round boss on the motor connecting end surface.The round boss of the output end of described motor inserts described center of circular hole and locates, and the described plane of motor is adjacent to the described motor connecting end surface axial location of gear-box.This structure has improved the steadiness that connects, and has reduced rigging error, and having avoided transmission failure, gear wear, collision because rigging error causes is the problems such as vibrating noise; And motor directly is fixed on gear-box, avoids directly contacting with the parts such as housing, has effectively reduced the bang path of motor vibrations.

During enforcement, described cylinder driving unit comprises that a cylinder, one are embedded by described cylinder opening end and along this embedding direction cross section piston rod in T shape, and one is set on this piston rod and the piston ring that coordinates with described cylinder inside wall; Blind end at described cylinder also is provided with the pump orifice that penetrates described housing sidewall and be used for the described suction of suction/aerofluxus output; The outer end of described piston rod is fixedly connected on described synchronous cog belt, and the range of described piston rod under described synchronous cog belt drives equals the range of described piston rod in described cylinder.It is simple and reliable for structure, is convenient to adopt heavy caliber, long stroke cylinder.

During enforcement, described piston rod is connected to the below of the straightway of described synchronous cog belt, also be provided with U-shaped gathering sill at described underpart of the piston rod, also be provided with the upper surface in described active synchronization belt wheel bottom and coordinate the pulley that is used for guiding and supports this piston rod with described U-shaped gathering sill.This is simple and reliable for structure, and being equipped with of U-shaped gathering sill and pulley forms support and guiding to piston rod, improves product reliability, reduces beat vibrations and noise.

Also be provided with the axial depression parallel with described piston ring contoured surface at the large end end face of described piston rod, guarantee the piston rod construction even thickness, lower molding difficulty and production cost.

During enforcement, the gap location of described cylinder body between open end side and described gear transmission unit also is provided with for the flexible gasket that plays damping effect.Avoid rigid collision, and fill up the gap and strengthen structural strength.

Described cylinder blind end midline position also is provided with for the screw location-plate of cylinder with respect to described gear transmission unit location, is provided with through hole in the middle part of the screw location-plate.This setting position of screw location-plate avoids the cylinder in piston rod push-and-pull process to follow movement effectively to cylinder is carried out axial location, and the location is reliable, reduces vibrations and noise.

Also be provided with the bypass interface vertical with its axis near its blind end on the sidewall of described cylinder, described cylinder driving unit also comprises the pressure override valve that is connected with described bypass interface by trachea.The pressure override valve setting makes product have the function of overpressure protection, improves Product Safety; The bypass interface is laterally disposed, has dwindled the overall volume of product.

During enforcement, described pressure override valve comprises valve body, valve gap and valve block, and wherein, described valve body has an exhaust gas inside road, and described exhaust duct has air inlet and air vent, and described air inlet is connected by trachea with the bypass interface of described cylinder; Described valve block is the elastomeric material material, its inner face touch the sealing surface of described valve body, relatively described valve body location, its top, its middle part arranges the sphere of a projection, the steam vent that this sphere is aimed at described valve body forms hermetically-sealed construction, the bottom of described valve block is the fish hook bending, and structure thicker is adopted at the position that it bends up; Also be provided with the cavity of isolating with described sealing surface on described valve body, the tail end that described valve block bends up the position is embedded in described cavity.This reliable in structure, good seal, the problem that can avoid existing pressure override valve easily to lose efficacy improves product service life.

During enforcement, described driven synchronous pulley comprises a tubular synchronizing belt gear; Synchronizing belt gear comprises outer cylindrical gear profile and endoporus, and wherein endoporus radially has at least one inner concave shape oil groove along it; Described driven synchronous pulley also comprises the axis that passes described endoporus; Described axis has draw-in groove in lateral surface position, the two ends of the described synchronizing belt gear of correspondence, also has been installed with the circlip of position-limiting action on described draw-in groove.This driven synchronous belt wheel structure, overall volume is less, in the situation that fixedly axis, need not skidding tubular synchronizing belt gear can be for a long time, effectively rotate.

During enforcement, described Timing Belt support is overlooked the body that takes the shape of the letter U, its bottom be one with the passage body of through hole structure, the open communication of the through hole of described passage body and described U-shaped body, described driven synchronous pulley is across at described U-shaped body opening part, described active synchronization belt wheel is arranged in described passage body, be provided with L shaped mounting groove at the U-shaped body opening part bilateral symmetry that described driven synchronous pulley is set, the elongated slot of described L shaped mounting groove is parallel with described Synchronous Belt Drives direction, and the short groove of described L shaped mounting groove extends to the end face of described Timing Belt support; Described piston rod penetrates the through hole of described passage body.This is simple and reliable for structure, volume is little, has structural strength preferably, installation and the adjusting of the convenient driven synchronous pulley of L shaped mounting groove.

During enforcement, described control circuit board is arranged on above described cylinder driving unit, be provided with magnetic piece at described piston rod near piston ring and cylinder inner wall upper end surface, be provided with the Hall element for this magnetic piece of induction position on described control circuit board, to detect the position of piston rod, realize controlling calibration.

The position of described square duct corresponding described magnetic piece movement locus on gear housing also is provided with the empty avoiding breach, increases piston rod stroke to dwindle small product size.

Described control circuit board also includes the circuit be used to the rotation direction of controlling described electric motor units and rotate output, velocity of rotation, rotational travel and rotating transformation period.Realize the control of product.

During enforcement, described cylinder driving unit is provided be used to the returning buffering spring that reduces the backhaul vibration.Avoid in the piston rod backhaul, the pull of vacuum in cylinder is ordered about the piston rod returning quickly and is caused noise, vibrations and affect the user experiencing, and can store the energy of Compress Spring in backhaul, provides the part power of pumping process, to reduce the power of motor requirement.

Concrete, described buffer spring is wind spring, described power output shaft stretches out an end of described gear housing with flat groove breach, also is provided with a hanging column on the side of described power output shaft outside described gear-box (Timing Belt support); One end of described buffer spring is installed on described flat groove breach, and the other end is installed on described hanging column; The outer end of described hanging column is provided with the step that breaks away from be used to blocking described buffer spring.

During enforcement, described power motor unit comprises motor, soft packing ring and radiator shutter, described motor comprises the motor output shaft that extends to form forward on the axis that is positioned at its main body and the extension that extends back and form, and described helical gears and described soft packing ring are installed on described motor output shaft; Wherein said soft packing ring is between the main body of described helical gears and described motor, and the main body end face of the end face of described soft packing ring and helical gears and described motor is close to.This structure makes motor output shaft fix at axial location, successfully manages the axial force that produces in the cylindrical helical gear drive process, and the main body of helical gears and motor effectively reduces friction by soft packing ring, the assurance motor working efficiency.

During enforcement, place, the outer end of corresponding described motor output shaft also is equipped with the supplemental support bearing in described gear-box, also be provided with mesopore and penetrate gear-box and be used for attachment screw described motor body is locked at screw hole post on described gear-box in described gear-box, the screw hole post has guaranteed mechanism's intensity of gear-box.

Described radiator shutter is fixed on described extension, and described radiator shutter comprises at least two blade units that are the radial radiation structure, is set in distance between every two described blade units; Described control circuit board, comprise motor revolution sensor circuit, described circuit comprises that this infrared inductor comprises a U-lag be used to the infrared inductor at the blade unit interval of responding to described radiator shutter, and the rotary motion trace line of described radiator shutter passes the centre of described U-lag.This structure realizes the revolution inspection of motor by radiator shutter, radiator shutter has been realized again the cooling to motor simultaneously.

During enforcement, also include an inner support in described housing, described power motor unit, gear transmission unit and cylinder driving unit all are connected in described inner support; The connecting portion of described inner support and described housing has been provided with the flexible gaskets of buffer action.The fit structure that is arranged so that power motor unit, gear transmission unit and cylinder driving unit of inner support is strengthened, and makes product solid, durable, and reduces the vibrations in work process, and flexible gaskets further cushions and prevent from shaking the transmission to housing.

During enforcement, the position of corresponding described power motor unit, gear transmission unit and cylinder driving unit on the principal plane of described inner support, be respectively depression and be provided with indent motor slot, inner concave gear case groove and indent cylinder groove, be the empty avoiding setting between described power motor unit and described indent motor slot, described gear transmission unit and described cylinder driving unit are embedded in respectively in described inner concave gear case groove and described indent cylinder groove.This structure guarantees the reliable also conserve space of the connection of each unit, and clearance structure has avoided the vibrations of electric motor units directly to the inner support transmission, is beneficial to simultaneously motor radiating.

During enforcement, described inner concave gear case groove also includes the flexible buffer cover adaptive with its trough body structure, and this flexible buffer cover isolation is arranged between described gear transmission unit and described inner concave gear case groove.This structure makes the vibrations of electric motor units and gear transmission unit be cushioned cover to absorb, and not directly to the inner support transmission, is beneficial to and reduces noise and vibrations.

During enforcement, the uniform passage that is provided with in described indent motor slot is provided with louvre with corresponding position, described passage position on described housing, improves the motor radiating performance; The both sides of described indent cylinder groove are provided with long narrow facet in addition, also vertically are provided with four columns on this facet, and described control circuit board is arranged on these four columns, this structure conserve space, be convenient to the assembling.

During enforcement, described housing is made of upper shell and lower house amalgamation, and described inner support is connected with described lower house, and described upper shell end face is provided with operation interface, the button that is provided with display screen and arranges around display screen in described operation interface; Described housing outline is the rectangular shape of edge chamfer, and a vertical side of housing has the chamfer radius larger than other edge; Described hull outside also is provided with the anti-slip veins that is convex shape.This structure is convenient for assembly and use, and has kept and the interiors of products structure maximizes coupling, dwindles small product size, is easy to carry.

Described operation interface is rounded, and described display screen is two LED display screens that are arranged side by side in this regional center and are respectively used to show suction and velocity amplitude; Described button ovalize is provided with seven altogether, comprise: " open/temporarily " that be arranged on described display screen top stops key, be separately positioned on memory button and the massage key on described display screen both sides, be arranged on corresponding LED display below, be up and down two speed of arranging and increase/subtract key, and be two suction arranging up and down and increase/subtract key.This structure makes the use friendly interface, the operation be more prone to, convenient, at utmost satisfy user's operation requirements easily.

The present invention also provides a kind of breast pump, and it comprises the reciprocal aspirator of compact conformation formula as previously described.

During enforcement, this breast pump also comprises trachea and the breast cup that connects pump orifice.

the invention has the beneficial effects as follows: the reciprocal aspirator of a kind of compact conformation formula and breast pump, by will be used to the power motor unit that rotates original moment is provided, thereby be the cylinder driving unit of internal volume distortion output suction with being used for power conversion, be arranged on for the same side of the gear transmission unit that original moment is slowed down and commutate and be attached thereto, and power motor unit and described cylinder driving unit are the axis parallel arrangement side by side, realize comparatively compact structure, reduced small product size under the prerequisite of not reducing suction and efficient, improve damping, noise reduction.

Further, described gear transmission unit consists of (the one formation refers to that gear reduction and synchronous belt mechanism are arranged in same casing) by gear-box and synchronous belt drive mechanism one, and drive cylinder driving unit by synchronous belt drive mechanism, realizing that high-power transmission simultaneously, guaranteed compact conformation, being applied as of synchronous belt drive mechanism provides the buffering transition in drive path, guaranteeing that effective transmission has improved the reliability of drive mechanism simultaneously, and realizing the buffering to vibrations, noise and positive drive.

Further, motor to described gear-box outputting power, stable drive, can bear larger driven loads by helical gears, has reduced the vibrations and the noise problem that cause because of the frequent commutation of input.

Further, structural strength has been strengthened in the setting of inner support, has improved the steadiness of each unit matching, and minimizing equipment when work is because of deformation or the loosening vibrations that produce.

Further, by the connecting portion that flexible buffer cover, inner support and housing are set, flexible gaskets is set between inner concave gear case groove and gear transmission unit, gear housing and cylinder end face junction arrange flexible gasket, form multiple isolation buffer, reduce the vibrations of each whole unit on motor, gear transmission unit and inner support, reduce noise jamming, improve product service life.

Description of drawings

Fig. 1 is the decomposition texture schematic diagram of a kind of embodiment of the reciprocal aspirator of compact conformation formula of the present invention;

Fig. 2 is the internal structure schematic diagram after assembling embodiment illustrated in fig. 1;

Fig. 3 is the external structure schematic diagram after assembling embodiment illustrated in fig. 1;

Fig. 4 is another angle perspective view of relative Fig. 3;

Fig. 5 is the polycrystalline substance schematic perspective view of relative Fig. 3;

Fig. 6 is guidance panel schematic diagram embodiment illustrated in fig. 1;

Fig. 7 is inner support part-structure schematic diagram embodiment illustrated in fig. 1;

Fig. 8 is housing, the circuit board removed embodiment illustrated in fig. 1, the structural representation (broken section) after the other parts assembling;

Fig. 9 is the perspective view of another angle of relative Fig. 8;

Figure 10 is the structural representation (gear transmission unit broken section) of transmission link portions embodiment illustrated in fig. 1;

Figure 11 is the explosive view of gear transmission unit embodiment illustrated in fig. 1 and power motor cell mesh;

Figure 12 is the broken section structural representation (part that comprises the gear transmission unit that coordinates with it) of cylinder driving unit embodiment illustrated in fig. 1;

Figure 13 is the structural representation of transmission link embodiment illustrated in fig. 1;

Figure 14 is pressure override valve cross-sectional view partly embodiment illustrated in fig. 1;

Figure 15 is gear-box part transmission sketch embodiment illustrated in fig. 1.

The specific embodiment

By reference to the accompanying drawings the present invention is described in further detail below by the specific embodiment.

Please refer to the embodiment of the reciprocal aspirator of a kind of compact conformation formula shown in Fig. 1-15, it comprises power supply (being used for energy supply) ,Housing 300, and be arranged on power motor unit 100, cylinder driving unit 200, gear transmission unit 500 and control circuit board 600 in this housing 300.Wherein, power motor unit 100 is used for providing the original moment of rotation namely to rotate output torque, gear transmission unit 500 is used for connecting and the rotation output of power motor unit 100 is slowed down and commutate and terminad is exported, thereby the power conversion that cylinder driving unit 200 is used for connecting gear transmission unit 500 outputs is self internal volume distortion output suction, and control circuit board 600 is used for function and controls.Characteristics of the present invention are, described power motor unit 100 and cylinder driving unit 200 are arranged on the same side of gear transmission unit 500 and are attached thereto, power motor unit 100 is the axis parallel arrangement side by side with cylinder driving unit 200, and (said axis refers to line shaft or driving shaft here, motor shaft as the axis of the piston of cylinder driving unit 200, power motor unit 100), realize aforesaid transmission, the tight setting of electric motor units 100 and cylinder driving unit 200 like this, the space has been saved in the assurance transmission simultaneously, makes the product compact overall structure.Support the key point of above characteristics to be, gear transmission unit 500 has commutation function, make the rotation around axis of motor-driven unit convert gear transmission unit to around the axial rotation of output, and make the gear transmission unit output shaft vertical with the axis of motor-driven unit, also the axis with cylinder driving unit 200 is vertical, thereby the synchronous pulley on driven gear gear unit output shaft, thus drive Timing Belt along the rectilinear motion of piston rod length direction, thus drive the piston rod rectilinear motion.Also have a key features, power motor unit 100 and cylinder driving unit 200 are the axis parallel arrangement side by side; Here said axis refers to line shaft or driving shaft, as the motor shaft of the axis of the piston of cylinder driving unit 200, power motor unit 100; Because they are when work, vibrations and noise mainly take this axis as core to external diffusion, therefore power motor unit 100 and cylinder driving unit 200 are side by side and the axis parallel arrangement, can make side by side and the axis parallel arrangement, the stack mutually of the regular ground of little counteracting part is such as being mainly vibrations axial or radially after stack, being convenient to carry out shock absorbing at correspondence direction processes, if there is no this side by side and the axis parallel arrangement, shake direction in disorder, the shock absorbing difficulty.

The transmission of power link that the reciprocal aspirator of this compact conformation formula is complete is: power motor unit 100 driving gearbox gear units 500, this gearbox drive unit 500 synchronously passes to cylinder driving unit 200 with driving force, and produces the required suction of this device by this cylinder driving unit 200.

During enforcement, described power supply can be external power supply (connecting the power supply input as transformator), can be also built-in power (as internal battery), embodiment as shown in Figure 1, it adopts the external power supply structure, is positioned at housing 300 parts at input lead and also is provided with filtering magnet ring 451.Filtering magnet ring 451 is used for filtering high frequency noise, reduces electromagnetic interference, and built-in magnet ring can more easily be changed model to meet the demands.

In work process, control circuit board is controlled power motor unit 100 periodically forward and reverse outputs, thereby the periodicity that realizes cylinder driving unit 200 is air-breathing and aerofluxus, wherein the stroke of 600 pairs of power motor unit 100 forward/counter-rotatings of control circuit board or time are controlled dynamics and the speed that cylinder driving unit 200 is air-breathing that namely determined, this control mode, simplify mechanical transmission structure, be beneficial to the reduction manufacturing cost.

During enforcement, can be as shown in Figure 10,11, described gear transmission unit 500 can comprise gear-box 510, synchronous belt drive mechanism and with gear-box 510(housing) connect as one Timing Belt support 560.Wherein, gear-box 510 is used for realizing described deceleration and commutation, synchronous belt drive mechanism is used for the conversion rotation and is output as rectilinear motion to drive hereinafter described piston rod 230(synchronous belt drive mechanism as the clutch end of gear transmission unit 500 integral body), Timing Belt support 560 is used for connecting the described synchronous belt drive mechanism in location.Concrete, as shown in figure 10, synchronous belt drive mechanism can comprise that synchronous cog belt 580(is as shown in Figure 9) and this synchronous cog belt 580 the active synchronization belt wheel 550 and the driven synchronous pulley 570 that coordinate, the clutch end (as shown in figure 10) of active synchronization belt wheel 550 access gear-boxes 510.

During enforcement, can be as shown in Figure 10,15, described gear-box 510 can comprise helical gears 521, the first duplicate gear 523, the second duplicate gear 532 and the conical gear 533 of engagement successively, wherein helical gears 521, the first duplicate gear 523, the second duplicate gear 532 axis be arranged in parallel and are the deceleration fit structure, and conical gear 533 coordinates with the second duplicate gear 532 vertical settings of axis and by the cone tooth realizes the transmission commutation.During enforcement, gear-box 510 also can comprise the power output shaft 540 that is used as described clutch end; Conical gear 533 is fixed on an end of this power output shaft 540; Active synchronization belt wheel 550 also is fixed on the power output that namely realizes aforementioned active synchronization belt wheel 550 access gear-boxes 510 on this power output shaft 540.

Concrete, as shown in Figure 10,11,13,15, described the first duplicate gear 523 and the second duplicate gear 532 are spacing in described gear-box 510 by the first gear shaft 522 and the second gear shaft 531 respectively; The first duplicate gear 523 is by the large helical gears 5231 that coordinate with helical gears 521 and the little straight spur gear 5232 that is integrally connected with large helical gears 5231; The second duplicate gear 532 comprises the large straight helical gears 5321 that coordinate with little straight spur gear 5232, with the conical gear 5322 that is fixed on large straight helical gears 5321, this conical gear 5322 is bitten to close with described conical gear 533 and is consisted of Bevel Gear Transmission part 530.Large pinion relation is understood to aforesaid deceleration fit structure from here.

In work process, shown in Fig. 1,12, by cone tooth mating part, this rotary action power that will be parallel to motor output shaft is converted to rotary action power with motor output shaft 110 vertical direction, by synchronous cog belt 580, rotary action power being converted to can be referring to hereinafter with its structure of cylinder driving unit 200(again) the linear function power of axis synchronous cog belt 580 in the same way, and piston rod 230 rectilinear motions in drive cylinder driving unit 200, final cylinder 210 internal volumes that drive change, and produce the required pull of vacuum of breast pump.

During enforcement, can be as shown in Figure 10,11,13, described the first gear shaft 522 is provided with soft packing ring 5233 near described helical gears 521 1 ends, the first gear shaft 522 is provided with elastic washer, steel washer and soft packing ring successively away from described helical gears 521 1 end ecto-entads, realizing that the lubricated and reduction gearing position skew of gap filling, contact surface guarantees effectively to bite to close, but balance helical gears 521 and the helical gears 523 greatly axial force that coordinates transmission to produce also; The second gear shaft 531 is provided with the end face sliding bearing 5331 of being close to gear face away from conical gear 533 1 ends, end face sliding bearing 5331 concentric locking collars are on the second gear shaft 531 and be engaged on the internal box sidewall of described gear-box 510, end face sliding bearing 5331 plays the effect of supporting and reducing to rub, in gear-box 510 outsides to should the end face sliding bearing 5331 installation positions also be provided with radial reinforcement plate structure 5123, close to strengthen structure, reduce local deformation and to guarantee that gear is bitten.

During enforcement, can be as shown in figure 11, gear-box 510 includes gear box casing, and gear box casing and Timing Belt support 560 are structure as a whole, and this integrative-structure is formed by the first half housings 511 and the second half housing 512 amalgamations.Concrete, described the first half housings 511 and the second half housings 512 are described integrative-structure along the perpendicular segmenting structure at described power output shaft 540 axis places, and are convenient for assembly.Concrete, Timing Belt support 560 can be integrated formed structure with gear-box 510, with reinforcement structural strength, reduced volume, and synchronous belt drive mechanism is formed effective support.

During enforcement, can be as shown in Figure 11,13, described motor 120 bodies be a plane by output end, and round boss is arranged on the plane; Described gear-box 510 is provided with the motor connecting end surface 5111 adaptive with the described plane of motor 120, is provided with the circular hole adaptive with described round boss on motor connecting end surface 5111.The round boss of the output end of motor 120 inserts described center of circular hole and locates, and the described plane of motor 120 is adjacent to motor connecting end surface 5111 axial location of gear-box 510.This locate mode is accurate, firm, convenient for assembly, has avoided the problem of the more difficult location of simple screw.

During enforcement, with reference to as shown in figure 11, can consider to be provided with the flexible buffer pad between described plane and motor connecting end surface 5111, round boss penetrates the flexible buffer pad, and the flexible buffer pad can play the effect of filling up fit clearance and buffering noise reduction.

During enforcement, can be as shown in figure 12, cylinder driving unit 200 comprises that a cylinder 210, one are embedded by described cylinder 210 openings and along this embedding direction cross section piston rod 230 in T shape, and a piston ring 220 that is set on this piston rod 230 and coordinates with described cylinder 210 medial walls; Blind end at described cylinder 210 also is provided with the pump orifice 240 that penetrates described housing 300 sidewalls and be used for the described suction of suction/aerofluxus output; The outer end of described piston rod 230 is fixedly connected on described synchronous cog belt 580, and the range of described piston rod 230 under described synchronous cog belt 580 drives equals the range of described piston rod 230 in described cylinder 210.

During enforcement, can be as shown in Fig. 9,10, described piston rod 230 is connected to the below of the straightway of described synchronous cog belt 580, also be provided with U-shaped gathering sill 234 in described piston rod 230 bottoms, also be provided with the upper surface in described active synchronization belt wheel 550 bottoms and coordinate the pulley 235 that is used for guiding and supports this piston rod 230 with described U-shaped gathering sill 234, play guiding and supporting role, improve life of product and reduce noise.Concrete, also can be provided with the axial depression parallel with described piston ring 220 contoured surfaces at the large end end face of described piston rod 230 during enforcement, thereby be convenient to device is set the end back side greatly at piston rod 230, be convenient to piston rod 230 and the piston ring 220 U-shaped groove structures of cooperation places employing, assurance piston ring 220 is located the piston rod 230 processing difficulties problems of firmly avoiding simultaneously.

Concrete, as shown in figure 11, corresponding pulley 235 is fixed on this inner support 400 by wheel seat 236, and this wheel seat 236 is made of the first pedestal 237 and the second pedestal 238 amalgamations.

During enforcement, can be as shown in Figure 1, the gap location of cylinder 210 bodies between open end side and gear transmission unit 500 also is provided with for the flexible gasket 5113 that plays damping effect; Cylinder 210 blind end midline positions also are provided with for the screw location-plate 211 of cylinder 210 with respect to gear transmission unit 500 location, are provided with through hole at screw location-plate 211 middle parts; These screw location-plate 211 setting positions have guaranteed that the location of cylinder 210 is firm, accurately, avoid the axis of cylinder 210 and the skew of piston rod 230 line of motion centerings, have reduced because becoming flexible the vibrations that cause etc.During enforcement, at cylinder 210, some screw location-plates can be set also, with auxiliary positioning.

During enforcement, can also be provided with the bypass interface 250 vertical with its axis near its blind end on the sidewall of cylinder 210 as shown in Fig. 1,12, cylinder driving unit 200 also comprises the pressure override valve 260 that is connected with described bypass interface 250 by trachea.The bypass interface connects trachea, and it is laterally disposed so that corresponding bypass interface 250 and trachea are covered the bypass interface that housing 300 needs to increase sizes, the overall volume of having dwindled product; The setting of pressure override valve 260 makes product have the function of overpressure protection; when piston rod 230 backhaul; if pump orifice 240 stops up (connected trachea stops up or trachea is bent); can produce very large malleation in cylinder; pressure override valve 260 can be opened when malleation and Exhaust Gas, improves Product Safety and service life.

Concrete, as shown in figure 14, pressure override valve 260 can comprise valve body 261, valve gap 262 and valve block 267, wherein, described valve body 261 has an exhaust gas inside road, described exhaust duct has air inlet 263 and air vent 264, and described air inlet 263 is connected by trachea with the bypass interface 250 of described cylinder 210; Described valve block 267 is the elastomeric material material, its inner face touch the sealing surface of described valve body 261, relatively described valve body 261 location, its top, its middle part arranges the sphere 265 of a projection, the steam vent 264 that this sphere 265 is aimed at described valve body 261 forms hermetically-sealed construction, the bottom of described valve block 267 is the fish hook bending, structure thicker is adopted at the position that it bends up, this structure plays the effect of elastic compression, make valve block 267 compress steam vent 264 when malleation is little, only have the release that just is open when just being pressed onto certain value.Also be provided with the cavity of isolating with described sealing surface on described valve body 261, the tail end that described valve block 267 bends up the position is embedded in described cavity.This structure has guaranteed the reliability of air vent 264 sealings, and the pressure override valve 260 that the problem such as avoided aging, can't reset causes lost efficacy, and was simple in structure durable.Concrete, valve block 267 fixedly is sus-pension, is provided with therebetween sphere 265; When air-breathing, be that negative pressure valve block 267 seals up bleeder port in cylinder, disappointing if generation malleation valve block 267 is open when aerofluxus, avoid malleation to produce.This pressure override valve 260 is vertical designs, and namely valve block 267 is vertical with horizontal plane with the contact surface of steam vent 264.

Concrete, as shown in Figure 10,11, driven synchronous pulley 570 can comprise a tubular synchronizing belt gear 5701; Synchronizing belt gear 5701 comprises outer cylindrical gear profile and endoporus 572, and wherein endoporus radially has at least one inner concave shape oil groove 5721 along it; Described driven synchronous pulley 570 also comprises the axis 571 that passes described synchronizing belt gear 5701 endoporus 572; Described axis 571 has draw-in groove in the lateral surface position, two ends of the described synchronizing belt gear 5701 of correspondence, also has been installed with the circlip 5723 of position-limiting action on described draw-in groove.

during enforcement, can be as Fig. 9, 10, shown in 11, Timing Belt support 560 adopts overlooks the body structure that takes the shape of the letter U, its bottom is set to one with passage body 5114 structures of through hole structure, the open communication of the through hole of passage body 5114 and described U-shaped body, driven synchronous pulley 570 is across at described U-shaped body opening part, active synchronization belt wheel 550 is arranged in described passage body 5114, be provided with L shaped mounting groove 562 at the U-shaped body opening part bilateral symmetry that driven synchronous pulley 570 is set, the elongated slot of L shaped mounting groove 562 is parallel with described synchronous cog belt 580 transmission direction, the short groove of L shaped mounting groove 562 extends to the end face of described Timing Belt support 560, the through hole of piston rod 230 penetration channel bodies 5114.This compact conformation, intensity might as well.

Concrete, as shown in figure 10, axis 571 two ends of driven synchronous pulley 570 also have in the outside of circlip 5723 step surface 5713 that location use is installed, packing ring 5712 medial surface are stuck on step surface 5713, the medial surface of lateral surface and the L shaped mounting groove 562 of Timing Belt support is close to, and the part that the L-type mounting groove is stretched out at axis 571 two ends is screwed into locking by screw 5711.This design has realized the function of driven synchronous pulley with minimum volume.

During enforcement, can be as shown in Figure 1, 2, control circuit board 600 is arranged on described cylinder driving unit 200 tops, is provided with magnetic piece 221 at piston rod 230 near piston ring 220 and cylinder 210 inwall upper end surfaces; Be provided with the Hall element for this magnetic piece of induction 221 positions on control circuit board 600; Induction effect by 221 of Hall element and magnetic piece, can judge piston rod 230 positions, correct the control process of controlling data and motor 120, for example controlling motor 120 when control circuit continues to a direction rotation, this moment, Hall element detected magnetic piece 221, illustrate that piston rod 230 has arrived the precalculated position, control circuit is calibrated internal parameter control accordingly, and controls motor 120 and reverse after predetermined stroke.During enforcement, for increasing piston rod 230 strokes, dwindling structural volume, on square duct, the position that crosses of corresponding described magnetic piece 221 movement locus also is provided with empty avoiding breach 5115; Described control circuit board 600 also includes the circuit be used to the rotation direction of controlling described electric motor units 100 and rotate output, velocity of rotation, rotational travel and rotating transformation period.

During enforcement, can be as shown in Fig. 9,11, cylinder driving unit 200 can be provided be used to the returning buffering spring 543 that reduces the backhaul vibration, and described returning buffering spring 543 is wind spring.Power output shaft 540 stretches out an end of described gear-box 510 bodies with flat groove breach 542, and described Timing Belt support 560 outsides also are provided with a hanging column 514 on the side of described power output shaft 540; One end of described returning buffering spring 543 is installed on described flat groove breach 542, and the other end is installed on described hanging column 514; The outer end of described hanging column 514 is provided with the step that breaks away from be used to blocking described returning buffering spring 543.Returning buffering spring 543 orders about piston rod 230 and breaks away from cylinder 210(to order about cylinder driving unit 200 air-breathing), in cylinder 210 breathing process, the driving force of returning buffering spring 543 can reduce the load of motor 120 like this, plays the effect of balance motor power; In cylinder 210 aerofluxuss (piston rod 230 returns) process, need overcome the resistance of returning buffering spring 543, for returning buffering spring 543 gathers elastic potential energy; Because after cylinder 210 is air-breathing, its inner chamber forms the region of no pressure, piston rod 230 meeting returning quickly under the pull of vacuum effect when backhaul, and generation noise and vibrations, therefore the setting of returning buffering spring 543, cushioned dexterously this process, reduced noise and vibrations and gather potential energy for breathing process.

During enforcement, can be as shown in Figure 10,11, power output shaft 540 arranges active synchronization belt wheel 550 across on two bearing fulcrums in the middle of power output shaft 540.Such structure is compared the output shaft that conventional gearbox is stretched out in the bearing outer end, rotates exactly more.

during enforcement, can be as Fig. 8, shown in 11, described power motor unit 100 comprises motor 120, soft packing ring and radiator shutter 141, motor 120 comprises that in fact the motor output shaft 110 that extends to form forward on the axis that is positioned at its main body and the extension 130(that forms that extends back are that motor shaft all has extension to two ends, motor output shaft 110 and extension 130 all belong to the part of motor shaft), described helical gears 521 are fixed on described motor output shaft 110, described soft packing ring is arranged between the main body of helical gears 521 and described motor 120, and the end face of described soft packing ring and helical gears 521 and the main body end face of described motor 120 are close to, to guarantee that motor output shaft 110 axial jump can not occur, and play the lubricated effect that reduces to rub, the noise that produces when relatively rotating between reducing between helical gears 521 and motor main body.

During enforcement, can as shown in Figure 10,11, at the place, outer end of the described motor output shaft 110 of the interior correspondence of gear-box 510, the supplemental support bearing be installed also; This supplemental support bearing coordinates with the outer end of motor output shaft 110, makes the shape that immobilizes in motor output shaft 110 load rotary courses, guarantees the stability of rotation of this motor output shaft 110, and travelling gear is reliably bitten and closed.During enforcement, also be provided with mesopore and penetrate gear-box 510 and be used for attachment screw described motor 120 bodies are locked at screw hole post 5125 on described gear-box 510 in gear-box 510.

During enforcement, shown in Fig. 1,8,11, radiator shutter 141 is fixed on extension 130, and radiator shutter 141 comprises at least two blade units (in illustrated embodiment being 6) that are the radial radiation structure, be set in distance between every two blade units, form and respond to gap 142; Control circuit board 600, comprise motor revolution sensor circuit, circuit comprises that also this infrared inductor 150 comprises a U-lag for the infrared inductor 150 at the blade unit interval of induction radiator shutter 141, and the rotary motion trace line of described radiator shutter 141 passes the centre of described U-lag.Infrared inductor 150 can be made a little circuit board 151 that is independent of outside control circuit board 600, is fixed on radiator shutter 141 neighbouring with convenient detection.Embodiment as shown in the figure, radiator shutter 141 comprises six blade units that are the radial radiation structure, and to 6 induction gaps 142 should be arranged, infrared inductor 150 often detects and once responds to gap 142, and namely motor 120 has turned over 1/6 circle.The transmission of the number of turns combination gear case that rotates by motor 120 is corresponding active synchronization belt wheel 550 number of turns of rotating when, then is converted into the stroke that pulls piston rod 230, then is converted into the vacuum that cylinder 210 produces.Radiator shutter 141 has thermolysis simultaneously, when radiator shutter 141 is just turning to motor 120 direction blowing, the housing interior-heat is discharged to outside housing.When radiator shutter 141 counter-rotating, with the outer new air intake cooling of housing, thereby reach the effect of heat exchange.

The embodiment of the reciprocal aspirator of a kind of compact conformation formula of the present invention, shown in Fig. 1,7,8, also can include an inner support 400 in described housing 300, power motor unit 100, gear transmission unit 500 and cylinder driving unit 200 all are connected in described inner support 400, the setting of inner support 400 is combined as a whole each unit more closely, strengthened the position-limiting action to each unit, improved service life, reduce vibrations.During enforcement, also be provided with the flexible gaskets 410 of buffer action at inner support 400 and the connecting portion of housing 300.Flexible gaskets 410 effectively intercepts housing 300 and the inner support 400 that is fixed with aforementioned each unit, and buffering is subdued vibrations, reduces the transmission of noise and vibrations.

During enforcement, with reference to shown in Figure 1, the whole vital parts of aspirator can be arranged on inner support 400, do not have part to contact with the housing rigidity, have reduced to greatest extent vibration and have passed to outside housing 300.Can be connected the location by the screw that penetrates flexible gaskets 410 centers between inner support 400 and housing 300.

During enforcement, can be as shown in Figure 7, the position of corresponding described power motor unit 100, gear transmission unit 500 and cylinder driving unit 200 on the principal plane of inner support 400 is respectively depression and is provided with indent motor slot 420, inner concave gear case groove 440 and indent cylinder groove 430; Gear transmission unit 500 and described cylinder driving unit 200 are embedded in respectively in described inner concave gear case groove 440 and described indent cylinder groove 430; Realize the firm spacing of each unit and strengthen inner support 400 self intensity with stereochemical structure.420 of power motor unit 100 and indent motor slots are the empty avoiding setting, avoid the vibrations contact to transmit, and convenient heat radiation.

During enforcement, can be as shown in Figure 7, described inner concave gear case groove 440 also includes the flexible buffer cover 441 adaptive with its trough body structure, and these flexible buffer cover 441 isolation are arranged between described gear transmission unit 500 and described inner concave gear case groove 440.Because gear transmission unit 500 belongs to the device that intensity is high, vibrations are large, overlap 441 by flexible buffer the effect that can play isolation, damping vibration is set.

During enforcement, can be as shown in Fig. 5,7, the uniform passage 421 that is provided with in indent motor slot 420 is provided with louvre 422 with passage 421 corresponding positions, position on housing 300; Form the heat radiation wind path, auxiliary heat dissipation.

During enforcement, can be as shown in Fig. 7,9, the both sides of indent cylinder groove 430 are provided with long narrow facet in addition, coordinate the cylinder opening place to stretch out the fixedly installation of ear.Also vertically be provided with four columns on this facet, control circuit board 600 is arranged on these four columns.Facilitate wiring, facilitate Hall element to make equipment keep compact to the detection of magnetic piece 221, and (housing directly overlaps box and gets final product) convenient for assembly.

During enforcement, as shown in Figure 1, corresponding described filtering magnet ring 451 also is provided with filtering magnet ring groove 450 at inner support 400, and filtering magnet ring 451 is embedded in this filtering magnet ring groove 450.Built-in magnet ring can more easily be changed model to meet the demands.

The reciprocal aspirator embodiment of compact conformation formula of the present invention, shown in Fig. 1-6, described housing 300 is made of upper shell 310 and lower house 320 amalgamations, inner support 400 is connected with described lower house 320, upper shell 310 end faces are provided with operation interface 350, the button that is provided with display screen and arranges around display screen in operation interface 350; Housing 300 outlines are the rectangular shape of edge chamfer, and a vertical side of housing 300 has the chamfer radius larger than other edge; Housing 300 outsides also are provided with the anti-slip veins 343 that is convex shape.

Concrete, can be as shown in Fig. 1-6 during enforcement, the vertical side of described larger chamfer radius is the arcuation angle, anti-slip veins 343 is arranged on the upper side 341 and downside 342 of this housing 300, be some these decorative pattern convex shapees 343 that are parallel to each other, it is transversely arranged being arranged on this upper side 341 and this downside 342 respectively.The convex guidance panel boss 345 that is provided with on the front 344 of this housing 300, the position that crosses in this guidance panel boss 345 and this front 344 are round and smooth camber line design.Operation interface 350 is arranged on this guidance panel boss 345.This surface structure design can promote aesthetic appearance of the present invention greatly.

Concrete, can be as shown in Figure 6, described operation interface 350 is rounded, and described display screen is two LED display screens that are arranged side by side in this regional center and are respectively used to show suction and velocity amplitude; Described button ovalize is provided with seven altogether, comprise: " open/suspend " key that is arranged on described display screen top, be separately positioned on memory button and the massage key on described display screen both sides, be arranged on corresponding LED display below, be up and down two speed of arranging and increase/subtract key, and be two suction arranging up and down and increase/subtract key.The interface that the close friend that it provides uses makes the operation that sucks be more prone to convenient, at utmost satisfies user's operation requirements easily.

Concrete, can be as shown in Figure 1 during enforcement, these buttons can be made film like, corresponding button entity setting up is on control circuit board 600, both para-positions coordinate when housing 300 assembling, realize keypress function, and described display screen is corresponding transparent window, the display screen entity setting up is on control circuit board 600, below display screen entity after housing 300 assemblings just in time is positioned at transparent window.

During enforcement, described flexible gaskets 410, flexible buffer cover 441, flexible gasket 5113, flexible buffer pad, can be silica gel material, quality of rubber materials, silicone rubber material etc. have a flexible nature material consist of.Described soft packing ring can be that nylon washer etc. is wear-resisting and have certain elastic packing ring.

Control principle for present device, can adopt following scheme during concrete enforcement: described operation interface function realizes by control circuit board 600, control circuit board 600 comprises programmable control module, pulse width modulation (PWM) module, bridge-type power amplifier module and infrared induction input module.The flow process of programmable control module control circuit board, logic and calculating.When pressing " open/suspend " key, in halted state, the bridge-type power amplifier module is exported forward current as motor 120, and motor 120 piston rod 230 pull out; , stop electric current output device is stopped in running status as motor 120.When piston rod 230 pulls out, the number of times that infrared induction input module record is responded at infrared inductor 150 by the sense interval 142 of described radiator shutter 141, programmable control module calculates motor 120 and rotates the number of turns, by the fixing rotation ratio of gear transmission unit 500, calculate the stroke that piston rod 230 pulls.The bridge-type power amplifier module is exported reverse current after piston rod 230 arrives stroke, piston rod 230 is oppositely return. and the magnetic piece 221 on piston rod 230 is sensed by the Hall element of start position, the bridge-type power amplifier module is exported forward current again, piston rod 230 next circulation.Increase/subtract key when pressing suction, programmable control module records the progression that suction shows, the corresponding number of turns of rotating of conversion motor 120, the stroke of change piston rod 230.When the speed of pressing increases/subtracts key, the corresponding change outputting drive voltage of pulse width modulation (PWM) module, thus increase/subtract motor 120 rotating speeds, thus increase/speed of deactivation stopper rod 230.When pressing memory button, programmable control module records the suction of Set For Current and velocity amplitude (or replying suction and speed to memory value).When pressing the massage key, programmable control module control piston bar 230 is in a specific speed and suction value operation.

During enforcement, described gear housing can adopt full-aluminum alloy and gear can adopt the high accuracy Steel material, with effective transmission high-power and under full load high-speed cruising, greatly improved the efficient that sucks, suppressed the operation noise.Compare traditional plastic gear casing, plastic gear and without support Design, it is more reliable, solid, durable; High-intensity material makes gear reduction less tightr than traditional reducing gear.

The present invention also provides a kind of breast pump, and its characteristics are to comprise the reciprocal aspirator of compact conformation formula as the aforementioned.

During enforcement, this breast pump also comprises trachea and the breast cup that connects pump orifice 240.The reciprocal aspirator of aforesaid compact conformation formula provides the unit for the power of this breast pump.

Breast pump by the reciprocal aspirator embodiment structure of a kind of compact conformation formula as shown in Fig. 1-15: its main body (power provides the unit, i.e. the reciprocal aspirator of compact conformation formula) volume can be done the hand size to the adult, facilitates the suckling mother to carry out using; It is fit to adopt heavy caliber cylinder and long stroke cylinder, and end breast cup dynamic magnetism can reach the performance of hospital-grade breast pump; A kind of high efficiency electric breast pump of its structure, the suckling mother uses this device to suck can save the time of sucking, and increases the amount of sucking; It can adopt Full steel gear structure, Timing Belt air cylinder driven, and the returning buffering spring design, and the operation noise is effectively suppressed, and when the suckling mother is sucked, the baby is interference-free.It makes it and the inner support isolation at the bottom of overlapping 441 parcel gear-boxes by flexible buffer, there is no the rigidity contact; Flexible gaskets 410 isolation are arranged between inner support and drain pan, there is no the rigidity contact; Flexible gasket 5113 isolation are arranged between cylinder and gear housing joint face, there is no the rigidity contact.The present invention uses the flexible material isolation as far as possible between the assembly that vibration may be transmitted, the operation noise further is effectively suppressed, and reduces to greatest extent the noise of electric breast pump.

During enforcement, this breast pump can use dc source, the rear breast pump toot one sound prompting power connection that plugs in, and LCD display shows suction and speed.When pressing " open/suspend " key once, cylinder 210 is pressed suction and the reciprocating motion of speed progression that LCD shows, exports vacuum to breast cup at cylinder 210 end tracheas.The user can increase/subtract key by suction and regulate suction, and Negotiation speed increases/subtract the key governing speed.When the user presses massage key on operation interface 350, cylinder 210 is with quick little stroke suction, and little pull of vacuum altofrequency outputs to breast cup makes breast reach massage effect, and stimulating the secretion of milk increases the milk amount.When the user presses memory button on operation interface 350, can remember suction and the velocity composition wanted, also can return suction and the speed of memory before establishing.

The reciprocal aspirator of a kind of compact conformation formula that the present invention improves, it also may be used on other fields that need to produce the small displacement vacuum, includes but not limited to the fields such as medical treatment, health care, beauty treatment.

Above content is in conjunction with concrete embodiment further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims

1. reciprocal aspirator of compact conformation formula, it comprises power supply, housing (300) and be arranged on being used in this housing (300) the power motor unit (100) that rotates original moment is provided, be used for connecting the gear transmission unit (500) that the rotation output of described power motor unit (100) is slowed down and commutated, be used for to connect described gear transmission unit (500) thus power output be converted to the cylinder driving unit (200) of self internal volume distortion output suction and be used for the control circuit board (600) that function is controlled, it is characterized in that: described power motor unit (100) is the axis parallel arrangement side by side with described cylinder driving unit (200), and in the same side of gear transmission unit (500) and be attached thereto.

2. the reciprocal aspirator of compact conformation formula as claimed in claim 1, it is characterized in that: described gear transmission unit (500) comprises be used to the gear-box of realizing described deceleration and commutation (510), is used for the synchronous belt drive mechanism as described gear transmission unit (500) clutch end, and connects as one the Timing Belt support (560) of locating described synchronous belt drive mechanism be used to being connected with described gear-box (510); Described synchronous belt drive mechanism comprises active synchronization belt wheel (550) and the driven synchronous pulley (570) that synchronous cog belt (580) and this synchronous cog belt (580) coordinate, and described active synchronization belt wheel (550) accesses the clutch end of described gear-box (510).

3. the reciprocal aspirator of compact conformation formula as claimed in claim 2, it is characterized in that: described gear-box (510) comprises helical gears (521), the first duplicate gear (523), the second duplicate gear (532) and the conical gear (533) of engagement successively, wherein helical gears (521), the first duplicate gear (523), the second duplicate gear (532) axis be arranged in parallel and are the deceleration fit structure, and described conical gear (533) and described the second duplicate gear (532) axis be vertical to be arranged and coordinates by the cone tooth and realize that transmission commutates; Described gear-box (510) also comprises the power output shaft (540) that is used as described clutch end; Described conical gear (533) is fixed on an end of this power output shaft (540); The power output that described active synchronization belt wheel (550) accesses described gear-box (510) refers to that the active synchronization belt wheel (550) of described synchronous belt drive mechanism also is fixed on this power output shaft (540).

4. the reciprocal aspirator of compact conformation formula as claimed in claim 3 is characterized in that: described the first duplicate gear (523) and the second duplicate gear (532) are spacing in described gear-box (510) by the first gear shaft (522) and the second gear shaft (531) respectively; Described the first gear shaft (522) is provided with soft packing ring near described helical gears (521) one ends, and described the first gear shaft (522) is provided with elastic washer, steel washer and soft packing ring successively away from described helical gears (521) one end ecto-entads; Described the second gear shaft (531) is provided with away from described conical gear (533) one ends the end face sliding bearing (5331) of being close to gear face, described end face sliding bearing (5331) concentric locking collar is gone up and is engaged at the second gear shaft (531) on the internal box sidewall of described gear-box (510), be provided with in described gear-box (510) outside to should end face sliding bearing (5331) the radial reinforcement plate structure (5123) of installation position.

5. the reciprocal aspirator of compact conformation formula as claimed in claim 3, it is characterized in that: described gear-box (510) includes gear box casing, described gear box casing and described Timing Belt support (560) are structure as a whole, this integrative-structure is formed by the first half housings (511) and the second half housing (512) amalgamations, and described the first half housings (511) and the second half housings (512) are described integrative-structure along the perpendicular segmenting structure at described power output shaft (540) axis place.

6. the reciprocal aspirator of compact conformation formula as claimed in claim 3, it is characterized in that: described motor (120) body is a plane by output end, and round boss is arranged on the plane; Described gear-box (510) is provided with the motor connecting end surface (5111) adaptive with the described plane of motor (120), is provided with the circular hole adaptive with described round boss on motor connecting end surface (5111).

7. the reciprocal aspirator of compact conformation formula as claimed in claim 2, it is characterized in that: described cylinder driving unit (200) comprises that a cylinder (210), one are embedded by described cylinder (210) opening and along this embeddings direction cross section piston rod (230) in T shape, and a piston ring (220) that is set in that this piston rod (230) is gone up and coordinates with described cylinder (210) medial wall; Blind end at described cylinder (210) also is provided with the pump orifice (240) that penetrates described housing (300) sidewall and be used for the described suction of suction/aerofluxus output; The outer end of described piston rod (230) is fixedly connected on described synchronous cog belt (580), and the range of described piston rod (230) under described synchronous cog belt (580) drives equals the range of described piston rod (230) in described cylinder (210).

8. the reciprocal aspirator of compact conformation formula as claimed in claim 7, it is characterized in that: described piston rod (230) is connected to the below of the straightway of described synchronous cog belt (580), also be provided with U-shaped gathering sill (234) in described piston rod (230) bottom, also be provided with the upper surface in described active synchronization belt wheel (550) bottom and coordinate the pulley (235) that is used for guiding and supports this piston rod (230) with described U-shaped gathering sill; Described piston rod (230) greatly end face also be provided with the axial depression parallel with described piston ring (220) contoured surface.

9. the reciprocal aspirator of compact conformation formula as claimed in claim 7 is characterized in that: the gap location of described cylinder (210) body between open end side and described gear transmission unit (500) also is provided with for the flexible gasket (5113) that plays damping effect; Described cylinder (210) blind end midline position also is provided with for the screw location-plate (211) of cylinder (210) with respect to described gear transmission unit (500) location, is provided with through hole in the middle part of screw location-plate (211); Also be provided with the bypass interface (250) vertical with its axis near its blind end on the sidewall of described cylinder (210), described cylinder driving unit (200) also comprises the pressure override valve (260) that is connected with described bypass interface (250) by trachea.

10. the reciprocal aspirator of compact conformation formula as claimed in claim 9, it is characterized in that: described pressure override valve (260) comprises valve body (261), valve gap (262) and valve block (267), wherein, described valve body (261) has an exhaust gas inside road, described exhaust duct has air inlet (263) and air vent (264), and described air inlet (263) is connected by trachea with the bypass interface (250) of described cylinder (210); Described valve block (267) is the elastomeric material material, its inner face touch the sealing surface of described valve body (261), the relatively described valve body in its top (261) location, its middle part arranges the sphere (265) of a projection, the steam vent (264) that this sphere (265) is aimed at described valve body (261) forms hermetically-sealed construction, the bottom of described valve block (267) is the fish hook bending, and structure thicker is adopted at the position that it bends up; Also be provided with the cavity of isolating with described sealing surface on described valve body (261), the tail end that described valve block (267) bends up the position is embedded in described cavity.

11. the reciprocal aspirator of compact conformation formula as claimed in claim 2 is characterized in that: described driven synchronous pulley (570) comprises a tubular synchronizing belt gear (5701); Synchronizing belt gear (5701) comprises outer cylindrical gear profile and endoporus (572), and wherein endoporus radially has at least one inner concave shape oil groove (5721) along it; Described driven synchronous pulley also comprises the axis (571) that passes described endoporus (572); Described axis (571) has draw-in groove in the lateral surface position, two ends of the described synchronizing belt gear of correspondence (5701), also has been installed with the circlip (5723) of position-limiting action on described draw-in groove.

12. the reciprocal aspirator of compact conformation formula as claimed in claim 2, it is characterized in that: described Timing Belt support (560) is overlooked the body that takes the shape of the letter U, its bottom be one with the passage body (5114) of through hole structure, the through hole of described passage body (5114) and the open communication of described U-shaped body, described driven synchronous pulley (570) is across at described U-shaped body opening part, described active synchronization belt wheel (550) is arranged in described passage body (5114), be provided with L shaped mounting groove (562) at the U-shaped body opening part bilateral symmetry that described driven synchronous pulley (570) is set, the elongated slot of described L shaped mounting groove (562) is parallel with described synchronous cog belt (580) transmission direction, the short groove of described L shaped mounting groove (562) extends to the end face of described Timing Belt support (560), described piston rod (230) penetrates the through hole of described passage body (5114).

13. the reciprocal aspirator of compact conformation formula as claimed in claim 12, it is characterized in that: described control circuit board (600) is arranged on above described cylinder driving unit (200), be provided with magnetic piece (221) at described piston rod (230) near piston ring (220) and cylinder (210) inwall upper end surface, be provided with the Hall element for induction this magnetic piece (221) position on described control circuit board (600); The position of corresponding described magnetic piece (221) movement locus of described square duct also is provided with empty avoiding breach (5115); Described control circuit board (600) also includes the circuit be used to the rotation direction of controlling described electric motor units (100) and rotate output, velocity of rotation, rotational travel and rotating transformation period.

14. the reciprocal aspirator of compact conformation formula as claimed in claim 3 is characterized in that: described cylinder driving unit (200) is provided be used to the returning buffering spring (543) that reduces the backhaul vibration, and described buffer spring (543) is wind spring; Described power output shaft (540) stretches out an end of described gear-box (510) body with flat groove breach (542), also is provided with a hanging column (514) on the side of described power output shaft (540) outside described Timing Belt support (560); One end of described returning buffering spring (543) is installed on described flat groove breach (542), and the other end is installed on described hanging column (514); The outer end of described hanging column (514) is provided with the step that breaks away from be used to blocking described returning buffering spring (543).

15. the reciprocal aspirator of compact conformation formula as claimed in claim 3, it is characterized in that: described power motor unit (100) comprises motor (120), soft packing ring and radiator shutter (141), the extension (130) that described motor (120) comprises the motor output shaft (110) that extends to form forward on the axis that is positioned at its main body and extends back and form, described helical gears (521) and described soft packing ring are installed on described motor output shaft (110); Wherein said soft packing ring is positioned between the main body of described helical gears (521) and described motor (120), and the main body end face of the end face of described soft packing ring and helical gears (521) and described motor (120) is close to.

16. the reciprocal aspirator of compact conformation formula as claimed in claim 15, it is characterized in that: the outer end of corresponding described motor output shaft (110) place also is equipped with the supplemental support bearing in described gear-box (510), also is provided with mesopore and penetrates gear-box (510) and be used for attachment screw described motor (120) body is locked at screw hole post on described gear-box (510) in described gear-box (510).

17. the reciprocal aspirator of compact conformation formula as claimed in claim 15, it is characterized in that: described radiator shutter (141) is fixed on described extension (130), described radiator shutter (141) comprises at least two blade units that are the radial radiation structure, is set in distance between every two described blade units; Described control circuit board (600), comprise motor revolution sensor circuit, circuit also comprises the infrared inductor (150) be used to the blade unit interval of responding to described radiator shutter (141), this infrared inductor (150) comprises a U-lag, and the rotary motion trace line of described radiator shutter (141) passes the centre of described U-lag.

18. the reciprocal aspirator of compact conformation formula as described in claim 1-17, it is characterized in that: also include an inner support (400) in described housing (300), described power motor unit (100), gear transmission unit (500) and cylinder driving unit (200) all are connected in described inner support (400); The connecting portion of described inner support (400) and described housing (300) has been provided with the flexible gaskets (410) of buffer action.

19. the reciprocal aspirator of compact conformation formula as claimed in claim 18, it is characterized in that: corresponding described power motor unit (100) on the principal plane of described inner support (400), the position of gear transmission unit (500) and cylinder driving unit (200), be respectively depression and be provided with indent motor slot (420), inner concave gear case groove (440) and indent cylinder groove (430), be the empty avoiding setting between described power motor unit (100) and described indent motor slot (420), described gear transmission unit (500) and described cylinder driving unit (200) are embedded in respectively in described inner concave gear case groove (440) and described indent cylinder groove (430).

20. the reciprocal aspirator of compact conformation formula as claimed in claim 19, it is characterized in that: described inner concave gear case groove (440) also includes the flexible buffer cover (441) adaptive with its trough body structure, and this flexible buffer cover (441) isolation is arranged between described gear transmission unit (500) and described inner concave gear case groove (440).

21. the reciprocal aspirator of compact conformation formula as claimed in claim 19, it is characterized in that: the uniform passage (421) that is provided with in described indent motor slot (420), described housing (300) is upper is provided with louvre (422) with described passage (421) corresponding position, position; The both sides of described indent cylinder groove (430) are provided with long narrow facet in addition, also vertically are provided with four columns on this facet, and described control circuit board (600) is arranged on these four columns.

22. the reciprocal aspirator of compact conformation formula as described in claim 1-17, it is characterized in that: described housing (300) is made of upper shell (310) and lower house (320) amalgamation, described inner support (400) is connected with described lower house (320), described upper shell (310) end face is provided with operation interface (350), the button that is provided with display screen and arranges around display screen in described operation interface (350); Described housing (300) outline is the rectangular shape of edge chamfer, and a vertical side of housing (300) has the chamfer radius larger than other edge; The outside anti-slip veins (343) that is convex shape that also is provided with of described housing (300).

23. the reciprocal aspirator of compact conformation formula as claimed in claim 22 is characterized in that: described operation interface (350) is rounded, described display screen is two LED display screens that are arranged side by side in this regional center and are respectively used to show suction and velocity amplitude; Described button ovalize is provided with seven altogether, comprise: " open/suspend " key that is arranged on described display screen top, be separately positioned on memory button and the massage key on described display screen both sides, be arranged on corresponding LED display below, be up and down two speed of arranging and increase/subtract key, and be two suction arranging up and down and increase/subtract key.

24. a breast pump is characterized in that: comprise the reciprocal aspirator of compact conformation formula as described in claim 1-23 any one.