CN1807894A - Hand-held vacuum pump and automated urinary drainage system using that vacuum pump - Google Patents
Hand-held vacuum pump and automated urinary drainage system using that vacuum pump Download PDFInfo
- Publication number
- CN1807894A CN1807894A CN 200510087665 CN200510087665A CN1807894A CN 1807894 A CN1807894 A CN 1807894A CN 200510087665 CN200510087665 CN 200510087665 CN 200510087665 A CN200510087665 A CN 200510087665A CN 1807894 A CN1807894 A CN 1807894A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- vacuum pump
- cylinder
- live axle
- coupling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The present invention makes the vacuum pump miniaturization and portability. In the hand-held vacuum pump 1, the main body 1 a of the vacuum pump in which the pump room 4 a is formed and the electric motor 2 are connected via the shaft coupling 21. The main body of the vacuum pump has the driving shaft 10. One ball bearing 15 b supporting the driving shaft is supported by the cylinder. The other ball bearing 15 a is sup ported by the flange 5 mounted hermetically at the cylinder. The end part of the cylinder at the side of the electric motor accommodates the shaft coupling, and is engaged with the end part of the electric motor so that the electric motor may support the cylinder.
Description
Technical field
The present invention relates to portable vacuum pump, particularly be applicable to the portable vacuum pump of the treatment device of urinating automatically.
Background technique
Wait example record to some extent in patent documentation 1 of suction device of the usefulness of urinating be object to be difficult to move to the urinate people in place for oneself.At the urine suction device described in this communique is that the urine reservoir vessel is arranged on from urine receiver to the suction pump as the attraction source.And, when urine receiver is urinated, detect this urinate and from attraction pipeline to urine reservoir vessel attract.At this moment, suction pump attracts the control of state according to the signal of the pressure transducer of the variation in pressure that detects the urine reservoir vessel.
Suction pump uses the vacuum pump of a plurality of light weights.The example of such vacuum pump is record to some extent in patent documentation 2 and patent documentation 3.In order to improve sliding properties and then to raise the efficiency, the slide member that constantly is lubricated by self-lubricating function is set on rotary compressor at the compressor described in the patent documentation 2.On the other hand, the pump chamber of pressing chamber and sealing fluid is hermetic distinguished, will be carried out the liquid conveying to sealed department and lubricated portion from the sealing fluid that pump chamber is discharged at the compressor and the vacuum pump of the rotation blade shape described in the patent documentation 3.
[patent documentation 1] spy opens the 2003-126242 communique
[patent documentation 2] spy opens the 2002-195180 communique
[patent documentation 3] spy opens flat 8-296575 communique
Existing urine suction device described in the above-mentioned patent documentation 1 is according to the pressure of urine reservoir vessel, the operating condition that the change conduct attracts the suction pump in source.But this patent documentation 1 does not take into full account the miniaturization and the low noiseization of suction pump.In order to improve the mobility of urine suction device, when carrying out the miniaturization of device integral body, also need to make the suction pump miniaturization.The effective method that makes pump become miniaturization is the rotational speed that improves pump, and still, if improve the rotational speed of pump, at the positive displacement pump that generally is used for miniature pump, the relative gap between movable part and the stationary part strengthens, and efficient reduces.In addition, if merely carry out speed up then the noise increase.Owing to must consider the urine suction device, particularly use at bedside night in the open air, therefore must reduce noise.
On the other hand, in the compressor described in patent documentation 2 and the patent documentation 3, because the efficient that miniaturization etc. causes reduces, and improve the reliability of sealed department and lubricated portion in order to prevent.But because the not specific treatment device that is used to urinate of these compressors etc. carry the medical device of usefulness, even promote miniaturization, from paying attention to the viewpoint of performance, it is complicated that structure also becomes.In addition, owing to be not to be used for the device that yet can use, therefore, do not consider fully being interrupted the noise that produces when running waits and the reduction in life-span at night.
The present invention improves portable in view of above-mentioned prior art problems when purpose is to make the vacuum pump miniaturization.Another object of the present invention is to improve the reliability of the vacuum pump with mobility.Other purposes of the present invention are formed in night or the outdoor also operable treatment device of urinating with vacuum pump.
Summary of the invention
The feature of the present invention that realizes above-mentioned purpose is a kind of portable vacuum pump, the vacuum pump that connects motor and formation pump chamber by coupling, the bearing that supports a side of the live axle that above-mentioned vacuum pump body had is remained on the cylinder, the opposing party's bearing is remained on the flange that is installed in airtightly on this cylinder, when above-mentioned coupling is accommodated in the end of the motor side of above-mentioned cylinder, chimeric with the end of above-mentioned motor, above-mentioned motor supports above-mentioned cylinder.
And, in this feature, can form circular hole in a side of coupling, the running shaft of this circular hole and motor is chimeric; Form the simulation square hole at opposite side, this simulation square hole is chimeric with the live axle that connects in the cylinder, forms the chimeric hole of running shaft with motor on live axle, does not need the retaining screw of the running shaft of this coupling and motor.And the material of coupling can be resin, can form a plurality of projections of extending at axle direction in the interior all sides that are formed at the circular hole on this coupling, perhaps form a plurality of with radial direction that this circular hole is communicated with on the hole of extending.
In above-mentioned feature, a pair of sliding cylinder preferably is set, this a pair of sliding cylinder clamp from both sides tabular extension part the centre, have circular arc part, this sliding cylinder is remained on the cylinder, swings sliding cylinder in cylinder, make cylinder and piston form dual cylinder, between this dual cylinder, form the pump chamber that shape changes.
In above-mentioned feature, by eccentric shaft piston is installed on the live axle, this piston has the tabular blade part that extends at outside diameter on the part of periphery, sliding cylinder with circular arc part can keep this blade part with freely swinging, above-mentioned live axle preferably uses stainless steel, coupling to use PC resin or POM resin, piston uses PS resin or PC resin, and cylinder uses the PBT resin, and sliding cylinder uses PPS resin or PBT resin.PC is that polycarbonate (PC), POM are that polyoxymethylene, PS are that polystyrene, PPS are that polyhenylene thioether, PBT are the polybutylene terephthalates.
In addition, in above-mentioned feature, the end that is preferably in live axle is equipped with the counterweight of the offset of compensating piston and eccentric shaft, the outer cover that covers this counterweight is installed on the flange, can form this flange with the POM resin, make cylinder and piston form dual cylinder,, make the gas that the volume that is formed on the pump chamber between this dual cylinder changes, compresses pump chamber is interior by oscillating vane portion.
In addition, in above-mentioned feature, can on live axle, form the notch that the transverse axis section shape is the D font, on eccentric shaft, form hole that should the D font, form a plurality of projections of extending at the inner face that is formed at the D font hole on the eccentric shaft at axle direction, can on cylinder, form the holding part that keeps sliding cylinder, near this holding part and dual cylinder, generally perpendicularly be arranged on the cylinder sucking the suction passage of gas and the discharge stream of discharge gas and the blade part of swing, at valve of discharging the sheet that this discharge stream of switch is installed on the stream and the expulsion valve pressing plate of pushing this valve.And, the profile of portable vacuum pump be diameter smaller or equal to 30mm, length smaller or equal to 70mm, weight is smaller or equal to 250g, motor is that output voltage is the dryelement cell of 4～9V or uses the secondary cell drive electric motor, and the total exhaust velocity when driving vacuum pump with 4000～6000rpm is preferably in about 80mL/sec.
Other features of the present invention are a kind of treatment device of urinating automatically, and it has the portable vacuum pump of above-mentioned any feature, and the exhaust velocity of this vacuum pump is about 80mL/sec, weight is smaller or equal to 250g.
According to the present invention, because the formation of vacuum pump is oversimplified, so vacuum pump portable raising when forming miniaturization.In addition, when improving the each several part positional accuracy with simple formation, make really between stationary part and the movable part and lubricate, therefore, the reliability with vacuum pump of mobility improves.In addition, because positional accuracy improves, reduce in the generation source of noise, no matter in the occasion that is fit to use the treatment device of urinating, still can use at night or field.
Description of drawings
Fig. 1 is an embodiment's of an expression portable vacuum pump of the present invention sectional view.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the exploded perspective view of the rotor part of vacuum pump shown in Figure 1.
Fig. 4 is the exploded perspective view of the coupling portion of vacuum pump shown in Figure 1.
Fig. 5 is the exploded perspective view that is used for the driving axial region of vacuum pump shown in Figure 1.
Fig. 6 is the side view that is used for the coupling portion of vacuum pump shown in Figure 1.
Fig. 7 is other embodiments' the exploded perspective view that is used for the coupling of vacuum pump shown in Figure 1.
Fig. 8 is the side view of end that is used for the driving axial region of vacuum pump shown in Figure 1.
Fig. 9 is plan view and the side view that is used for the expulsion valve pressing plate 19 of vacuum pump shown in Figure 1.
Embodiment
Below utilize accompanying drawing, describe with regard to a mode of execution of portable vacuum pump of the present invention.Vacuum pump shown in the present embodiment is mainly used in the treatment device of urinating.Fig. 1 is the longitudinal section of expression vacuum pump, Fig. 2 is the A-A sectional view of Fig. 1, Fig. 3 be vacuum pump shown in Figure 1 major component exploded perspective view with and the B-B sectional view, Fig. 4 is the exploded perspective view of the shaft end of vacuum pump shown in Figure 1, and Fig. 5 is the exploded perspective view that is used for the axle system of vacuum pump shown in Figure 1.
In portable vacuum pump 1, vacuum pump body 1a is connected a side of drive motor 2 by coupling 21.Motor 2 drives vacuum pump body 1a with the rotational speed of 4000～7000rpm.The diameter of motor 2 is about 30mm, axle direction length is about 35mm.Motor 2 is driven by dryelement cell about 4～9V or secondary cell.
The axle direction intermediate portion and the hole of the live axle 10 that is connected with running shaft 2a by coupling 21 are chimeric, and this hole forms in that the inside of columniform eccentric shaft 11 is eccentric, makes eccentric shaft 11 eccentric motion around running shaft 2a.Needle bearing 12 arranged in that the outer circumferential side of eccentric shaft 11 is chimeric.The axle direction left and right sides of eccentric shaft 11 is rotated support by ball bearing 15a, 15b.With the surface of contact 10f of the motor opposition side of eccentric shaft 11, be on the left part of Fig. 1, be benchmark, counterweight 13 be installed with counterweight surface of contact 10e.Counterweight 13 apparatus 14 that is fixed remains on the eccentric shaft 11.
For the illustrated oiling agent that do not have that prevents to spread upon on the ball bearing 15a disperses, this ball bearing 15a remains on the ball bearing holding part 5a cylindraceous, and cone shape lubricant reservoir dish 5b is installed around ball bearing holding part 5a.Equally, in the holding part of ball bearing 15b cone shape lubricant reservoir dish 4f is installed also.Using between piston 3 and the eccentric shaft 11 under the situation of needle bearing 12, form the needle bearing fixing part 11d that the inner ring lateral axis direction of needle bearing 12 is pushed, kept needle bearing 12.
The outer cover 6 that the part of counterweight 13 sides of live axle 10 is entrenched on the flange 5 covers.On a side 4c of cylinder 4, be equipped with this vacuum pump 1 is installed in mounting plate 4d on the treatment device of urinating.And the end of motor 2 sides of cylinder 4 is formed cylindric, accommodates coupling 21, chimeric with the embedding part that is formed on the motor 2.Like this, the direct shoring 4 of motor 2.The peripheral part of the cylinder of corresponding pump chamber 4a portion is formed dual, and the motor base 20 of the periphery that keeps motor 2 is installed on the end of motor 2 sides of this dual portion.Therefore, cylinder 4 also is maintained on the motor 2 by motor base 20.
Ball bearing 15b is maintained on the one-piece type cylinder of shell 4, and this cylinder 4 is sides, be the container of the open snowman in the side in left side of Fig. 1.On the other hand, the ball bearing 15a in left side is maintained on the ball bearing holding part 5a that is formed on the flange 5.Flange 5 is the plate-shaped members that cover the surface of cylinder 4 open sides, special-purpose sheet 17 is arranged on and cylinder between, chimeric airtightly with cylinder.Special-purpose sheet 17 is sheets of being made by PTFE, absorbs the cylinder 4, the eccentric shaft 11, following with the piston 3 of detailed description and forming errors and the assembly error of sliding cylinder 7a, 7b that are made of resin material.
Because cylinder 4 slides on special-purpose sheet 17, therefore special-purpose sheet 17 uses the material that is imbued with sliding.Special-purpose sheet 17 can be out of shape when the slip of cylinder 4.Piston 3 is installed on the outside diameter of needle bearing 12, and this piston 3 has slip ring and from the blade 3a who extends to form to foreign side of the Zhou Fangxiang of this slip ring.Eccentric shaft 11 and needle bearing 12 are housed in the cylinder 4.
Form cylinder a part sliding cylinder 7a, 7b from about clamp the intermediate portion of blade 3a.This sliding cylinder 7a, 7b are maintained on the jut of cylinder 4, and this jut has the interior shape consistent with the outer shape of sliding cylinder 7a, 7b.The space of the oval tubular of the front end of blade 3a on the inner peripheral surface of the jut that is formed on cylinder 4 is outstanding.The bottom of piston 3 forms drum, and its outer circumferential face 3b is relative with the inner peripheral surface 4a that forms columnar cylinder 4 bottoms.And, between piston 3 and cylinder 4, even the narrowest place also forms the micro-gap that can keep sealing.Piston 3 rotatablely moves in cylinder 4.If piston 3 is rotated motion with certain radius, then the meniscate space 4b that forms between the inner peripheral surface 4a of cylinder 4 and piston 3 also moves thereupon.And gas is sucked from suction passage 8, discharges to discharging stream 9.
Near the holding part of sliding cylinder 7a, the 7b of cylinder 4, forming suction passage 8 and discharging stream 9 with live axle 10 orthogonal directions, along continuous straight runs.Suction passage 8 and discharge stream 9 are to pump chamber 4b opening.Be formed with valve seat 9b on discharge stream 9, expulsion valve 9a is connected on this valve seat 9b.Expulsion valve 9a is that thickness is the silicon chip of 0.5mm.Expulsion valve pressing plate 19 is pressed in expulsion valve 9a the opposition side of discharging side.In order to reduce useless volume (deadvolume), be installed in the expulsion valve 9a that discharges on the stream 9 and be arranged on the position of the inner peripheral surface 4a of cylinder 4 as far as possible near blade 3a.In the present embodiment, discharge form on the cylinder side 4c of side diameter greater than the hole of discharging stream 9 as valve seat 9b.
The details of expulsion valve pressing plate 19 as shown in Figure 9.With figure (a) is front view, (b) is side view.Expulsion valve pressing plate 19 is to be processed into pole to form, that is, and and at the central part processing through hole 19y of pole, and, back side is formed the stairstepping that has only discharge valve bounce angular breadth 19d at axle direction.In Fig. 9, the part of ladder is tilted the ground otch in short transverse.Front side at pole forms screw slotting 19j, and this screw slotting 19j is the groove at the diametric(al) otch, is formed with the circular hole 19x bigger than the diameter of through hole 19y up to axial intermediate portion.Back side at this circular hole 19x is formed with hexagonal hole 19i, and this hexagonal hole 19i is for this expulsion valve pressing plate 19 is installed with hexagon wrench.The external diameter 19a of expulsion valve pressing plate 19 is 5.0mm.
Back side at expulsion valve pressing plate 19 is formed with the expulsion valve 9a roughly the same with the diameter of expulsion valve pressing plate 19.Expulsion valve 9a is that thickness is the round sheet of the PTFE system of 0.1mm, and is consistent with the shape of expulsion valve pressing plate 19, only be discharged from valve pressing plate 19 from the upper end to the end difference and push down.Therefore, pressure bending to the left and right from the end difference to the bottom by discharging stream 9.At this, be 1.15mm as the valve pressing plate length 19b of the length from the upper end portion to the end difference.Valve angular aperture 19c as the otch angle of end difference is 45 degree.Expulsion valve 9a is the fulcrum bending with valve opening fulcrum 19e, the 19f at notch two ends.Because the lower end side of expulsion valve 9a is further crooked by valve opening fulcrum 19f, therefore, can guarantee the access that the front face side of expulsion valve 9a expulsion valve pressing plate 19 when bending is communicated with the back side of expulsion valve 9a.
Promptly, because relief opening height 19h has been guaranteed in the inboard in the thickness 19g of slip ring part, the thickness 19g part of this slip ring forms by the through hole 19y that is formed on the expulsion valve pressing plate 19, therefore, has formed the stream that is communicated with the screw slotting 19j of groove width 19k from through hole 19y.Like this, regardless of the installment state of vacuum pump, expulsion valve is turned round really.In addition, owing to make end difference form the shape of otch obliquely, therefore reduced because the noise that the switch of expulsion valve 9a produces.
Details as shown in Figure 4, live axle 10 is connected by coupling 21 with the running shaft 2a of motor 2.Coupling 21 forms cylindrical, forms circular hole 21a in the chimeric side of the running shaft 2a of motor 2.On the other hand, live axle 10 chimeric sides are formed with the rectangular hole of simulation (square hole) 21b that the two sides of circle is cut away.To should square hole 21b, on live axle 10, form and have the plane 10b that is parallel to each other, the filler rod of 10c.Form the circular hole 10a that the running shaft of motor can be chimeric at the central part of live axle 10.
On the vacuum pump 1 that constitutes like this, flange 5 and special-purpose sheet 17 are installed on the cylinder 4 airtightly, form pump chamber 4b.Form projection 4e on the relative face of cylinder 4 and flange 5, when being installed in flange 5 on the cylinder 4, this projection 4e distortion, projection 4e and special-purpose sheet 17 are close to flange 5.By such sealing that improves pump chamber 4b.
Running shaft 2a is in case rotation, and then eccentric shaft 11 also carries out eccentric motion, and the piston 3 that is installed on the external diameter of this eccentric shaft also carries out eccentric motion.At this moment, the motion of the blade 3a of piston 3 is by sliding cylinder 7a, 7b restriction, and the rotation of piston 3 is prevented from.In addition, the sliding cylinder 7a, the 7b that prevent blade 3a rotation are in order to make the motion slyness of blade 3a, and material and the shape (part of cylinder) good by sliding form.
In the present embodiment, utilize the running shaft 2a of motor and the static friction between the circular hole 21a, the rotary driving force of motor 2 is transmitted to live axle 10.Coupling 21 rotation in a single day, then rotating force is transmitted to the plane of the filler rod of live axle 10 10b, 10c from the square hole 21b that is formed on the coupling 21, live axle 10 rotations.Existing is with retaining screw etc. coupling 21 to be fixed on the axle 10, still, does not use retaining screw etc. in the present embodiment.Its reason is that then the weight of retaining screw works as uncompensated load, might vibrate if use retaining screw etc.Owing to do not use retaining screw, therefore make live axle 10 and coupling 21 closely chimeric.And, owing to also need to carry out the decomposition of live axle 10 and coupling 21, so coupling 21 uses PC resins such as (polycarbonate (PC)), formation lightweight and high coefficient of frictionization.
In the present embodiment, use the coupling 21 of polycarbonate (PC) for above-mentioned reasons, but resinous coupling 21 is difficult to reach and metal identical formed precision.In order to prevent, the running shaft 2a of motor 2 can be inserted in the circular hole 10a of live axle 10 owing to forming errors, the running shaft 2a of motor 2 and the coaxality disorder of live axle 10.Like this, the vibration in the time of can reducing high speed rotating, this vibration cause owing to the axle center of the running shaft 2a of motor 2 and live axle 10 misplaces knifeedge, and, can prevent the reduction of mechanical efficiency.In addition, the axle direction axial length of vacuum pump 1 can be reduced, vacuum pump 1 miniaturization can be made.
On the other hand, when the running shaft 2a that coupling 21 is installed in motor 2 goes up, do not use retaining screw yet, coupling 21 can be unloaded from motor 2.For this reason, in the present embodiment, on the inner peripheral surface of the circular hole 21a of coupling 21, be formed on axle direction projection 21c that extend, that in Fig. 6, specifically represent.Be formed on to a plurality of projection 21c devices spaced apart on the Zhou Fangxiang of inner peripheral surface of coupling 21.Fig. 6 (a) is the monomer side view of coupling 21, is the sectional view of the running shaft 2a of coupling 21 installation motor 2 being gone up state with figure (b).Because running shaft 2a is inserted coupling 21, and therefore, resiliently deformable takes place in the projection 21c of resinous coupling 21.
Because the inner peripheral surface at coupling 21 forms a plurality of projection 21c, so the rotating torques of the running shaft 2a of motor 2 is sent on the coupling 21 really by frictional force.In addition, because the distortion of projection 21c, the location that has kept the running shaft 2a of motor 2, i.e. concentricity.In addition, because the distortion of projection 21c has guaranteed that also torque transmits the area of contact of the running shaft 2a of needed and motor 2.When the running shaft 2a that the height of projection 21c is configured to motor 2 is inserted into, do not have the state in chimeric gap between projection 21c and the running shaft 2a.Therefore, even the size of circular hole 21a has not with, precision deviation is arranged, perhaps, the material of running shaft 2a and coupling 21 is different, the heat distortion is gone up and produced difference, and owing to very close to each other between projection 21c and the running shaft 2a, therefore, rotating torques is transmitted really.
Rotating torques by from the side of the square hole 21b of coupling 21 and parallel plane 10b, the 10c of the filler rod of live axle 10 transmit to live axle 10.These square holes 21b and filler rod not only carry out the transmission of torque, and are used in the location when assembling.If two sides with plane 10b, the 10c of filler rod aims at square hole 21b then can be positioned at coupling 21 on substantially horizontal and the Vertical direction with respect to live axle 10.In addition, as long as filler rod is inserted the square hole 21b of coupling 21, just can automatically carry out the location of the circular hole 10a of the running shaft 2a of motor 2 and live axle 10.
Fig. 7 is other embodiments of expression coupling.In the above-described embodiments, being used in the projection 21c and the filler rod that extend on the axle direction is fixed on coupling 21 on running shaft 2a and the live axle 10.In the present embodiment, on coupling 22, a plurality of softening hole 22c that extend at radial direction are formed on the almost axisymmetric position.Because the material of coupling 22 is resins, therefore in the processing of softening hole 22c, the inner peripheral surface portion of softening hole 22c is in inboard plastic deformation.By this distortion, in case running shaft 2a is inserted circular hole 22a, then the inner face of circular hole 22a is rotated a 2a and pushes expansion, forms the part that does not have chimeric gap between running shaft 2a and the coupling 22 at Zhou Fangxiang.Live axle 10 sides form groove 22b and replace the simulation chamfered groove, and this groove 22b extends to the periphery of the end shape of respective drive 10.Even, also can similarly be rotated the location of a 2a and live axle 10 simply, and also can corresponding thermal distortion with the foregoing description by forming coupling 22 like this.
Below, utilize Fig. 3 and Fig. 5 to describe with regard to the effect of pump portion.Place in the periphery of live axle 10 forms cut sides 10d, forms section crop toroidal.Because at hole (live axle the is used the hole) 11a that forms the section shape identical with section shape shaft in this cut sides 10d portion on the eccentric shaft 11, therefore, if the hole 11a that live axle 10 insertion live axles are used, then the position of the Zhou Fangxiang of eccentric shaft 11 is positioned.In case live axle 10 rotation, then rotating torques is sent to from this cut sides 10d on the plane 11b of the hole 11a that live axle uses, eccentric shaft 11 rotations.At this moment, because the axle center of eccentric shaft 11 is different with the axle center of live axle 10, therefore, eccentric shaft 11 carries out eccentric rotatablely moving.
At this moment, because assembly error or gap between eccentric shaft 11 and the live axle 10 produce vibration on eccentric shaft 11, because eccentric shaft 11 carries out eccentric motion, therefore vibration increases.Its result causes the friction or the wearing and tearing of the slip surface on efficient reduction and cylinder 4 or the piston 3.And, because wearing and tearing or thermal distortion cause the life-span reduction of vacuum pump 1.For fear of such problem, in the present embodiment, use the eccentric shaft 11 of PPS (polyhenylene thioether).If use the eccentric shaft 11 of PPS system, then because in light weight, wearability and heat resistance are good, and rates of thermal expansion is little in resin, therefore, can long lifetime ground running vacuum pump 1.
Because eccentric shaft 11 in light weight, the unbalanced force (centrifugal force) in the time of therefore can reducing the eccentric running that produces.Can reduce the quality of counterweight 13.Like this, can make the vacuum pump miniaturization.In addition, in the present embodiment,, also can be undertaken integrated by inserting moulding though form the structure that live axle 10 and eccentric shaft 11 is chimeric.When inserting moulding, live axle 10 is positioned at the resin that injects the formation eccentric shaft on the mould, to this mould.If make eccentric shaft 11 insert moulding, then can keep the concentricity with live axle 10, when the performance of compressor improves, can reduce machining period.
On the contrary, live axle 10 uses the high metallic material of mechanical strength.Because it is live axle 10 is metal, therefore different with the rates of thermal expansion of resinous eccentric shaft 11.On-stream, since this thermal expansion difference, eccentric shaft 11 relative drive shaft 10 displacements on Zhou Fangxiang easily.Therefore, on the 11b of the plane of eccentric shaft 11, form the projection 11c that axle direction extends.Fig. 8 is the profile diagram that expression is formed on the live axle usefulness hole 11a portion on the eccentric shaft 11.Figure (a) is that live axle is with the profile of hole 11a portion, with scheming the sectional view that (b) is insertion live axle 10 back states together.
Identical with the situation of the running shaft 2a of the motor 2 of above explanation and coupling 21, in case live axle 10 is inserted live axle hole 11a, then the projection 11c that extends at axle direction carries out resiliently deformable or plastic deformation, and the gap between live axle 10 and the eccentric shaft 11 disappears.And even be rotated the heat that drives generation by live axle 10, thermal distortions take place in live axle 10 and eccentric shaft 11, because the distortion of projection 11c always is maintained at state very close to each other between live axle 10 and the eccentric shaft 11.Like this, also can prevent the relative displacement of the Zhou Fangxiang of eccentric shaft 11 relative drive shafts 10.
In the present embodiment, in the 11b portion of the plane of section D shape, form three projection 11c that extend at axle direction.In addition, because the axle direction length of the plane 11b of the plane 10d of live axle 10 and eccentric shaft 11 is long, therefore, consider assembling performance or decomposability, these planes 10d, 11b are axially tilted, its angle once is about.Like this, owing to can stop the vibration that causes because of the gap between live axle 10 and the eccentric shaft 11, therefore can alleviate the weight of counterweight 13.
Below, the situation of the treatment device that just above-mentioned small-sized vacuum pump 1 is used for urinating automatically describes.Comprise that from the angle of the health treatment device that requires to urinate automatically all parts of vacuum pump all must regularly replace.In order to make renewal part can carry out recycling, make vacuum pump form the part shape that can decompose easily according to the material classification.Table 1 is the shape of representing to assemble easily and decomposing and the selection result of desirable material.
[table 1]
| Be suitable for the position | Symbol | Require performance (performance of paying attention to is represented with zero) | Embodiment's material | |||||||
| Light weight | Intensity | Heat resistance | Rates of thermal expansion (little → zero) | Wearability | Friction factor (big → zero) | To urine property | Moldability | |||
| | 10 | ○ | ○ | Metal (stainless steel) | ||||||
| Coupling | 21 | ○ | ○ | PC/PCM | ||||||
| Piston | 3 | ○ | ○ | ○ | ○ | ○ | ○ | PS/PC | ||
| | 11 | ○ | Zero (equating) with piston | ○ | ○ | PBT/PPS | ||||
| The one-piece type cylinder of | 4 | ○ | Zero (equating) with piston | ○ | ○ | ○ | PBT | |||
| Sliding cylinder | 7a，7b | ○ | Zero (being higher than piston) | ○ | ○ | PPS/ | ||||
| Flange | ||||||||||
| 5 | Zero (equating) with piston | ○ | ○ | POM | ||||||
| | 6 | ○ | | |||||||
| Motor base | ||||||||||
| 20 | ○ | POM | ||||||||
For the above reasons, live axle 10 and eccentric shaft 11 use stainless steel and PBT/PPS respectively.Piston 3 is to use PS/PC, and this material weight is light, heat resistance and rub resistance height, have weak acid resistant and anti-alkalescent in the drug resistance.These forming materials are also strong.
In case make vacuum pump 1 running, then each one of vacuum pump 1 carries out thermal expansion.Therefore, make the material of sliding cylinder 7a, 7b of blade part 3a of cylinder 4 or eccentric shaft 11, guiding piston 3 roughly the same, avoid because the stress that thermal expansion causes increases.In the present embodiment, the material unification with these parts is PS (polystyrene).In addition, between eccentric shaft 11 and live axle 10, use needle bearing 12 to improve under the situation of sliding, on eccentric shaft 11, form the needle bearing holding part 3c of the end face that keeps needle bearing 12.
The corresponding position that ball bearing 15a, 15b are remained on cylinder 4 forms ball bearing location seat cushion 11g, 11h that the inner ring lateral axis direction of ball bearing 15a, 15b is pushed on eccentric shaft 11.This ball bearing location seat cushion 11g, 11h form drum, and axle direction length is about 0.5mm.The width of the axial size of eccentric shaft 11 and piston 3 and pump chamber 4b is roughly the same.
The material that select wearability and heat resistance height, have weak acid resistant and anti-alkalescent, moldability is strong is used for cylinder 4.Cylinder 4 slides with piston 3, therefore considers the sliding properties of piston 3 materials, uses to have PPS (polyhenylene thioether) identical with piston 3 rates of thermal expansion degree or PBT (polybutylene terephthalate).Sliding cylinder 7a, the 7b of the blade part 3a of guiding piston 3 selects the degree identical materials of wearability and heat resistance height and rates of thermal expansion and piston 3.Also consider moldability, select PPS or PBT in the present embodiment.
The size of vacuum pump is determined according to the urine amount of discharging.The uropoiesis summary 33 of the investigation result of the urine flow (voided volume of unit time) in reference each age of demonstration is rolled up No. 4 (in April, 1987) 521～526 pages, is drawn adult's discharge urine amount.According to the document, young adult's (19～39 years old) maximum urine flow is per second 28.2 ± 4.6mL, and this amount is greater than the amount at other any ages.Therefore, throw that more than needed maximum is urinated flow set is 40mL into.Consider that air is involved in or unknown losses, total velocity of discharge of vacuum pump is set at per second 70mL.Therefore, for example, be that the diameter of 13.6mm, piston is 14.0mm if the diameter of cylinder is 17.2mm, length, then the discharge capacity of piston 1 rotation is about 1.066mL, drives vacuum pumps if change with per minute 4300, and 76.4mL then can per second urinates.Supposing has about 10% loss, the about 70mL that can urinate of per second.
In the present embodiment, as mentioned above, having determined each size and rotational speed of vacuum pump, still, is per second 70mL if satisfy total velocity of discharge, and then different sizes and rotational speed are also passable.Owing to can make vacuum pump miniaturization and lightweight, therefore, the profile with the vacuum pump apparatus of motor combination can be formed diameter smaller or equal to 30mm, length smaller or equal to 70mm, weight is smaller or equal to 250g.Like this, can use the power supply that comprises dryelement cell solar cells and fuel cell, that have the voltage about 4～9V or secondary cell etc.
Claims (12)
1. portable vacuum pump, connect motor and the vacuum pump that is formed with pump chamber by coupling, it is characterized in that, the bearing that supports a side of the live axle that above-mentioned vacuum pump body had is remained on the cylinder, the opposing party's bearing is remained on the flange that is installed in airtightly on this cylinder, when above-mentioned coupling is accommodated in the end of the motor side of above-mentioned cylinder, chimeric with the end of above-mentioned motor, above-mentioned motor supports above-mentioned cylinder.
2. portable vacuum pump as claimed in claim 1 is characterized in that, at the side formation circular hole of coupling, the running shaft of this circular hole and above-mentioned motor is chimeric; Form the simulation square hole at opposite side, this simulation square hole is chimeric with the live axle that connects in the above-mentioned cylinder, forms the chimeric hole of running shaft with above-mentioned motor on above-mentioned live axle, does not need the retaining screw of the running shaft of this coupling and above-mentioned motor.
3. portable vacuum pump as claimed in claim 2, it is characterized in that, resinous eccentric shaft with profile cylindrical part is set on above-mentioned live axle prejudicially, the piston that will have tabular extension part on the part of periphery is installed in the outer circumferential side of this eccentric shaft, forms a plurality of projections of extending at axle direction on interior all sides of the embedding part of above-mentioned live axle and above-mentioned eccentric shaft, eccentric shaft.
4. portable vacuum pump as claimed in claim 2, it is characterized in that, with the material of resin as coupling, form a plurality of projections of extending in the interior all sides that are formed on the circular hole on this coupling at axle direction, perhaps form a plurality of with radial direction that this circular hole is communicated with on the hole of extending.
5. portable vacuum pump, it is characterized in that, the centre of above-mentioned tabular extension part, a pair of sliding cylinder with circular arc part are clamped in setting from both sides, this sliding cylinder is remained on the cylinder, swings sliding cylinder in cylinder, above-mentioned cylinder and above-mentioned piston are formed dual cylinder, between this dual cylinder, form the pump chamber that shape changes.
6. the treatment device of urinating automatically is characterized in that, have as each described portable vacuum pump of claim 1 to 5, exhaust velocity is more than or equal to 70mL/sec, the weight vacuum pump smaller or equal to 250g.
7. portable vacuum pump as claimed in claim 1, it is characterized in that, by eccentric shaft piston is installed on the above-mentioned live axle, this piston has the tabular blade part that extends at outside diameter on the part of periphery, sliding cylinder with circular arc part can keep this blade part with freely swinging, above-mentioned live axle is a stainless steel, above-mentioned coupling is PC resin or POM resin, above-mentioned piston is PS resin or PC resin, above-mentioned cylinder is the PBT resin, above-mentioned sliding cylinder is PPS resin or PBT resin, wherein, PC is a polycarbonate (PC), POM is a polyoxymethylene, PS is a polystyrene, PPS is the polyhenylene thioether, PBT polybutylene terephthalate.
8. portable vacuum pump as claimed in claim 7 is characterized in that, the counterweight of the offset of compensating piston and eccentric shaft is installed in the end of live axle, and the outer cover that covers this counterweight is installed on the above-mentioned flange, and this flange is the POM resin.
9. portable vacuum pump as claimed in claim 7 is characterized in that, above-mentioned cylinder and above-mentioned piston are formed dual cylinder, the gas that the volume that is formed on the pump chamber between this dual cylinder changes by swinging above-mentioned blade part, making, compresses pump chamber is interior.
10. portable vacuum pump as claimed in claim 7, it is characterized in that, forming the transverse axis section shape on live axle is the notch of D font, forms on above-mentioned eccentric shaft hole that should the D font, forms a plurality of projections of extending at axle direction at the inner face that is formed at the D font hole on the eccentric shaft.
11. portable vacuum pump as claimed in claim 7, it is characterized in that, on cylinder, form the holding part that keeps above-mentioned sliding cylinder, near this holding part and dual cylindrical part, generally perpendicularly be arranged on the cylinder sucking the suction passage of gas and the discharge stream of discharge gas and the blade part of swing, at valve of discharging the sheet that this discharge stream of switch is installed on the stream and the expulsion valve pressing plate of pushing this valve.
12. as each described portable vacuum pump in the claim 7 to 11, it is characterized in that, the profile of above-mentioned portable vacuum pump be diameter smaller or equal to 30mm, length smaller or equal to 70mm, weight is smaller or equal to 250g, above-mentioned motor is that output voltage is the dryelement cell of 4～9V or uses the secondary cell drive electric motor, and the total exhaust velocity when driving this vacuum pump with 4000～6000rpm is more than or equal to 70mL/sec.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005-012223 | 2005-01-20 | ||
| JP2005012223 | 2005-01-20 | ||
| JP2005012223 | 2005-01-20 | ||
| JP2005035371 | 2005-02-14 | ||
| JP2005-035371 | 2005-02-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1807894A true CN1807894A (en) | 2006-07-26 |
| CN100432439C CN100432439C (en) | 2008-11-12 |
Family
ID=36839952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100876651A Expired - Fee Related CN100432439C (en) | 2005-01-20 | 2005-07-29 | Hand-held vacuum pump and automated urinary drainage system using that vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100432439C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344080A (en) * | 2008-08-25 | 2009-01-14 | 刘永杰 | Portable passive vacuum pump |
| CN101865135A (en) * | 2010-07-21 | 2010-10-20 | 北京北仪创新真空技术有限责任公司 | Axial float positioning device for rotor shaft of vacuum pump |
| CN103967779A (en) * | 2014-05-12 | 2014-08-06 | 深圳市颜华守信科技有限公司 | Rotary micro pump |
| CN104039279A (en) * | 2011-11-15 | 2014-09-10 | 艾伯特医疗设备有限公司 | Fluid collection and expulsion apparatus |
| CN104271959A (en) * | 2012-03-23 | 2015-01-07 | 比策尔制冷机械制造有限公司 | Crankshaft with aligned drive and counterweight locating features |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07269478A (en) * | 1994-03-31 | 1995-10-17 | Toshiba Corp | Fluid compressor |
| JPH08296575A (en) * | 1995-04-25 | 1996-11-12 | Smc Corp | Rotary vane type compressor and vacuum pump |
| JP2002195180A (en) * | 2000-12-27 | 2002-07-10 | Fujitsu General Ltd | Rotary compressor |
| JP2003126242A (en) * | 2001-10-22 | 2003-05-07 | Kaigo Kiki Kaihatsu:Kk | Urine suction system |
-
2005
- 2005-07-29 CN CNB2005100876651A patent/CN100432439C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344080A (en) * | 2008-08-25 | 2009-01-14 | 刘永杰 | Portable passive vacuum pump |
| CN101344080B (en) * | 2008-08-25 | 2012-10-17 | 刘永杰 | Portable passive vacuum pump |
| CN101865135A (en) * | 2010-07-21 | 2010-10-20 | 北京北仪创新真空技术有限责任公司 | Axial float positioning device for rotor shaft of vacuum pump |
| CN104039279A (en) * | 2011-11-15 | 2014-09-10 | 艾伯特医疗设备有限公司 | Fluid collection and expulsion apparatus |
| CN104039279B (en) * | 2011-11-15 | 2017-08-04 | 艾伯特医疗设备有限公司 | Fluid collection and device for transferring |
| CN104271959A (en) * | 2012-03-23 | 2015-01-07 | 比策尔制冷机械制造有限公司 | Crankshaft with aligned drive and counterweight locating features |
| US9909586B2 (en) | 2012-03-23 | 2018-03-06 | Bitzer Kuehlmaschinenbau Gmbh | Crankshaft with aligned drive and counterweight locating features |
| CN103967779A (en) * | 2014-05-12 | 2014-08-06 | 深圳市颜华守信科技有限公司 | Rotary micro pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100432439C (en) | 2008-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI274105B (en) | Portable vacuum pump and automatic urination treatment apparatus using thereof | |
| CN1807894A (en) | Hand-held vacuum pump and automated urinary drainage system using that vacuum pump | |
| US8297957B2 (en) | Compressor | |
| US20130121857A1 (en) | Compressor and motor device thereof | |
| RU2007131433A (en) | MULTI-AXIAL ROTARY VACUUM PUMP | |
| US8028614B2 (en) | Wobble plate compressor | |
| US8206138B2 (en) | Scroll fluid machine with ball coupling rotation prevention mechanism | |
| EP3964711A1 (en) | Orbiting scroll plate driving assembly, and scroll compressor | |
| EP1537818A3 (en) | Power blower | |
| US20200208619A1 (en) | Rotary cylinder device | |
| CN1637296A (en) | Compressor | |
| JP4345682B2 (en) | Portable vacuum pump and automatic urination treatment apparatus using the same | |
| US11261864B2 (en) | Scroll compressor with buffer member between the orbiting groove and the balance weight | |
| KR20090055218A (en) | Oil pump equipped with balance weight | |
| CN1045162A (en) | Fluid compression engine | |
| CN1788164A (en) | Rotary compressor | |
| JP4918932B2 (en) | Automatic urination processing apparatus and vacuum pump used therefor | |
| KR930009733B1 (en) | Fluid compressor | |
| CN217381261U (en) | A coupling assembling and compressor for compressor | |
| KR20090118014A (en) | Donut vane rotary compressor | |
| CN218325157U (en) | Cylinder block assembly, piston compressor and refrigerator | |
| CN215256659U (en) | Rotating body device for swing type compressor and fixed displacement compressor | |
| JP2004218471A (en) | Hermetic electric compressor | |
| KR200276901Y1 (en) | Rotary vane vacuum pumps | |
| JP2003286978A5 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081112 Termination date: 20140729 |
|
| EXPY | Termination of patent right or utility model |