CN101099170B - Inhaler - Google Patents

Abstract

he invention relates to a hand-held device for the dosed distribution of sprayable substances, especially medicaments to be inhaled, said device comprising a cartridge that can be displaced into the distribution-opening position by means of pressure in a housing, and a feeding mechanism moved by the opening course of the cartridge and used to register and display the distribution actuation carried out. Said feeding mechanism is arranged in the centre of a housing below the front wall of the cartridge, on the opening side, overlapping the cartridge valve tube. The aim of the invention is to provide one such hand-held device in a spatially favorable manner, with more reliability in terms of handling, and a simplified structure. To this end, a stepped feeding mechanism arranged in a plate-shaped housing is provided with control elements which rotate about the axis located in the longitudinal direction of the cartridge.

Description

Inhalator

The present invention relates to a kind of hand-held instruments, be used for according to dosage discharging the spray form material, especially the medicine of Xi Ruing, comprise that one can move on to the cartridge case and a switching mechanism that is driven, is used to write down and show the discharging operation of having implemented when cartridge case is implemented opening travel by it of discharging the open site in the enclosure by pressurization, this switching mechanism is contained in central authorities and cartridge case open side end wall below and cartridge case valve pipe overlap joint in the shell.

The hand-held instruments of described type especially is applied to the medical science aerosol therapy and is used for the treatment of breathing problem.The fixing cartridge case that is in pressure state in the enclosure contains the medicine that will suck, in order to disengage or to need cartridge case to move axially in the enclosure in order to spray medicine.Cartridge case is equipped with a valve that is used to discharge pre-selected amount of medication for this reason.In addition, the common shell that almost completely surrounds cartridge case has a jet pipe and/or a breakout box that is used for by the nose suction by common mode.Be necessary for the user counter is provided, can indicate the dose that has consumed or in cartridge case, remained by it.Because at each dose of discharging regulation when handling cartridge case, known counter and cartridge case for discharge medicine in the enclosure move axially coupling.For example by Fig. 8 and the 9 known a kind of hand-held instruments of US6431168, it has a switching mechanism below central cartridge case open side end wall.It matches by diameter and cartridge case diameter.At the closed electric contact of each cartridge case opening travel.These contactings are counted and show in indicator.This technical complexity and thereby expensive design to need in form be the accumulator of battery and so on, especially this also can bring danger when hand-held instruments uses for a long time, makes the indication termination of switching mechanism because of battery discharge.Another kind of scheme by this same United States Patent (USP) does not need accumulator.Adopt a kind of step switch mechanism there, there is important disadvantages in its structural design scheme aspect the possibility of locational requirement and cleaning.

In view of above-mentioned prior art, technical matters to be solved by this invention can think and be, in simplified structure in the favourable mode in space at the hand-held instruments that designs described type aspect the operative technique more reliably.

Above-mentioned technical matters at first solves with main technical theme by claim 1, wherein, some on-off elements is installed in a step switch mechanism that is contained in the dish-shaped shell, and they are around being in cartridge case axis rotation longitudinally.Based on described design, created a kind of hand-held instruments of described type, it since selected structure not only aspect the locational requirement of switching mechanism but also cleaning aspect the possibility and all be favourable aspect the operability also in addition.Adopted a kind of step switch mechanism of mechanical type work, it is based on the selected layout of different on-off elements, and a kind of version of favourable saving space is arranged.This point can also reach like this, promptly step switch mechanism is bigger as preferred, especially the bigger on-off element of diameter, arrange with one heart with the longitudinal centre line of cartridge case, the cavity that exists anyway below the cartridge case consequently causes the space of further optimizing structure, because can be used in installation step switch mechanism thus in hand-held instruments.Even this step switch mechanism and accumulator are also irrelevant thereby long-term use still shows it is reliable through hand-held instruments.Described function only guarantees by the member of Purely mechanical mating reaction that more preferably they are made with a kind of unified plastics in addition.This further helps to simplify produces.

Below with reference to the technical theme of claim 1 technical theme of other claims is described, but the statement of their independence also can be significant.

For example stipulate further that step switch mechanism has an outside to have scale to be concentric with the ring of valve pipe rotation, it is rotated by a ring gear step-by-step movement that is subjected to the driving of cartridge case enforcement opening travel to be concentric with the rotation of valve pipe equally by planetary transmission.Calibration loop is contained in cartridge case open side end wall below and cartridge case valve pipe overlap joint, and therefore a diameter that matches with the cartridge case diameter is preferably arranged.This provides a big scale length, that is cardinal principle is corresponding to the length of cartridge case excircle.Rotatablely moving of calibration loop told by step switch mechanism from relatively moving of cartridge case, and its switch is dialled finger and worked on a circuit orbit of cartridge case valve pipe.Here switch is dialled and is referred to the preferably ingredient of the step switch mechanism of monolithic construction, and in the valve pipe construction section zone of hand-held instruments duty lower support on shell, step switch mechanism is configured as the subtend supporting of valve pipe in the face of valve port simultaneously.It constitutes switch and dials finger supporting section in the enclosure.When the supporting section of finger might be dialled owing to lacked switch this moment, so can not implement and the irrelevant maloperation step switch mechanism of cartridge case when shell takes out by step switch mechanism.Regulation in addition, planet wheel is contained in the hole of calibration loop and the central gear of being correlated with is on the toothed fluted disc of downside.Described fluted disc and switch are dialled and are referred to engagement.In addition, a locking plate inserts in the tooth turned position of the fixing dish that reached at that time.The coaxial one that is preferably shaped to when directed of central gear and fluted disc.Planetary transmission preferably is transferred to calibration loop with angle of rotation with slowing down.Correspondingly on calibration loop, can indicate for example 200 or 300 the stroke pulses that match with the cartridge case volume.In addition preferably, be located on the calibration loop outside surface and the scale that before the shell form, moves corresponding with planetary a plurality of single rotation pitches respectively.Relevant therewith, confirmed already also advantageously, after through a plurality of single pitches of central gear, finish a planetary single rotation pitch in view of slowing down.This exterior epicyclic gear radially meshes with a ring gear outside.The latter have at least one from following seamed edge be inclined upwardly ground directed, be used to insert the groove that step switch is dialled finger, so that regulation is dialled and referred to be used for stepping ground and rotate switch direction at the dish of central gear one side thus.It can be the ingredient that a step switch is dialled finger-star body that one or some step switch are dialled finger, and it for example has a central hub, on wheel hub radially with it standoff distance ground be shaped and dial finger along the opposed step switch of diameter.Step switch is dialled preferably monolithic molding of finger-star body.It is preferably made of plastic.It is directed from the wheel hub ground that is inclined upwardly that one or some step switch are dialled finger, and described in addition step switch is dialled finger and moved towards the direction on a plane vertical with longitudinal axis at the discharge stroke of cartridge case.Therefore step switch is dialled finger in the process of discharging motion, that is at cartridge case along clamped in the process of its longitudinal centre line dislocation.The valve pipe of cartridge case passes the wheel hub that step switch is dialled finger-star body.Here it also is used as the centring means that step switch is dialled the centring means of finger-star body and in addition is used as whole step switch mechanism or its shell.The wheel hub that step switch is dialled finger-star body is in the supporting section end face that the hand-held instruments shell is used for the valve pipe.Therefore, supporting section has dual-use function, combines as releasing member with cartridge case valve pipe on the one hand, valve is opened when cartridge case is mobile therein by selected valve piping support.Supporting section has the function of dialling finger-star body bearing as step switch on the other hand.Dial under the situation that finger moves in the plane perpendicular to longitudinal axis at step switch, the step switch mechanism shell is dialled finger-star body with other on-off elements with respect to step switch and is moved, and refers to the further switch of described pretension sum counter thereby cause step switch to be dialled.After decontroling cartridge case, it gets back to its home position immediately based on the valve spring in being combined in, and does not impel this step switch mechanism shell to lag behind owing to load for from now on the step switch mechanism shell.This step switch by pretension is dialled and is referred to realize,, occupies its original directed obliquely position again automatically by making step switch dial finger that is, and on-off element and switching mechanism shell is depressed into their original position at this moment.Correspondingly, step switch mechanism is in view of returning home position and cartridge case takes off coupling.It has one to be dialled by step switch and to refer to the back-moving spring constitute.Preferably, whole step switch mechanism comprises that calibration loop is contained in the shell, cleans shell in view of hope and does like this and confirmed already and be favourable.Because of shell empties, so can not when for example cleaning, damage the gearing part with brush.Exactly, selected a kind of version of sealing basically of compactness.The further suggestion of associated ground, the step switch mechanism shell that is designed to flat dish has a center pit that is used to pass the valve pipe, this hole for the flange that is introduced in the cartridge case open side and stretches out is expanded, is implemented the elasticity locking between step switch mechanism shell and the cartridge case in the end of cartridge case one side in this regional back.Based on described design, the step switch mechanism shell can overlap on the ground secure cartridge with cartridge case valve pipe below the central opening side wall.Elasticity locking between step switch mechanism shell and the cartridge case may be selected to be, and making does not have instrument just can not cancel locking.Here, flat dish shape step switch mechanism shell preferably has one and cartridge case diameter respective outer diameter, therefore is positioned at fully in the shade of cartridge case under the situation in the shell of packing into.By the step switch mechanism shell is locked on the cartridge case, for example especially for the purpose of shell cleaning, step switch mechanism can take out from shell with cartridge case.In addition, the axial length of whole step switch mechanism shell preferably matches with the length of valve pipe, so the latter is under the state that takes out from the hand-held instruments shell, continues to be surrounded by the step switch mechanism shell and remains in shielded state.Different with it, kayser is in the shell of hand-held instruments by this way to be designed to the step switch mechanism shell of flat dish, and promptly it still can move inward to implement opening travel.Therefore, the step switch mechanism shell for example can insert with cartridge case in the hand-held instruments shell when hand-held instruments is equipped for the first time, and the kayser that is located at after this in the shell finally blocks the step switch mechanism shell.From then on home position sets out, and step switch mechanism can further move inward by the stroke motion of cartridge case.One by the technology of the present invention theme further develops, and adopts a kind of dual locking of step switch mechanism shell that is designed to flat dish, promptly on the flange that is locked at cartridge case, also be implemented in second stronger locking in the shell of hand-held instruments.Uses for the first time and to go to the past hand-held instruments canning cartridge case that is necessary at first to be.In order to exempt another job step to the user, also be hand-held instruments canning step switch mechanism, the latter can exist with cartridge case interlocking ground.The user inserts cartridge case-step switch mechanism assembly in the hand-held instruments shell before using for the first time, implements interlocking then between step switch mechanism and hand-held instruments shell.For the purpose of cleaning cartridge case is extracted the interlocking that causes cancelling between step switch mechanism shell and the cartridge case flange from the hand-held instruments shell after this, therefore step switch mechanism is stayed in the hand-held instruments shell.Relevant therewith, confirmed already also advantageously that stronger being locked at can automatically terminate cartridge case in the hand-held instruments shell after the hand-held instruments shell takes out.Can stipulate that by another design cartridge case prevents to extract by the detention lock surely, they are designed to extend below tiltedly in the shell of hand-held instruments.This scheme is favourable under following situation especially, and coupling arrangement, especially interlock promptly are not set between step switch mechanism shell and cartridge case.Detention pin design here and being orientated makes them can cross cartridge case or cross the cartridge case head when equipping for the first time at least, make then the detention pin by enter in the tailer that cartridge case is formed in cartridge case head back.At last, the hand-held instruments housing parts on top can separate with jet pipe in the zone in dish-shaped step switch mechanism shell position substantially.Here, the step switch mechanism shell is latchable in jet pipe, and cartridge case for example is bound in the superincumbent part of shell by above-mentioned detention pin is set.By two separation that housing parts is possible, reach easily and to clean especially otherwise inaccessible shell folding turns the district.The dish design of step switch mechanism shell compactness is more prone to described cleaning, the on-off element or the analog that have not been difficult to deal with because this moment has emptied.Also whole step switch mechanism shell can be taken out and individually, for example cleans with flowing water from jet pipe in case of necessity.

Below by the description of drawings the present invention who only represents different embodiment.Wherein:

Fig. 1 represents to be used for the step switch mechanism decomposition diagram by hand-held instruments of the present invention;

Fig. 2 represents the xsect by step switch mechanism;

Fig. 3 represents the hand-held instruments longitudinal profile by first kind of form of implementation, comprises that is locked at a step switch mechanism that schematically illustrates on the cartridge case;

Fig. 4 represents the corresponding sectional view with Fig. 3, but relates to second kind of form of implementation, and the step switch mechanism that wherein schematically illustrates is locked on the shell;

Fig. 4 a represents the sectional view of the third form of implementation by Fig. 4, and wherein cartridge case is anti-is locked in the hand-held instruments shell with extracting; And

Fig. 5 represents the longitudinal profile of hand-held instruments after shell upper part and jet pipe separate of another kind of form of implementation.

The hand-held instruments 1 that Fig. 3 represents with constructed profile is used for according to dosage discharging spray form material, the especially medicine of Xi Ruing.

For this reason, hand-held instruments 1 at first has the cartridge case 3 that 2, one on a hand-held instruments shell contains sprayable material to pack into wherein.Cartridge case 3 can move axially in shell 2.

Usually cartridge case head 4 has one at the coaxial valve pipe 5 that extends in cartridge case 3 of central authorities.Realize discharging medicine by the axial relative motion between cartridge case 3 and the shell 2 by the latter.

Shell 2 is divided into two parts and mainly is made up of two annular elements that are arranged above and below 6 and 7, and wherein superincumbent annular element 6 is configured as shaft-like, and annular element 7 below has the jet pipe 8 of a cardinal principle transverse to the pole length orientation.The latter can be by the not cap of expression sealing among the figure.

The valve pipe 5 of cartridge case 3 is bearing in the ring-shaped bearing section 9 that following annular element 7 inside match, and meanwhile allows cartridge case 3 in the shaft-like annular element 6 inner axially-movables around cartridge case 3.

Be formed in outer casing underpart annular element 7 inner clamps and accept the supporting section 9 of cartridge case 3 valve pipes 5 tightly, be provided with one with the section of accepting the valve tube end flow channel 10 that reduces of diameter group mutually, it is connected with valve pipe 5 on flow technique, here flow channel 10 back to the end of valve pipe 5 towards the direction of jet pipe 8.

Two annular sections 6 and 7 can be pegged graft mutually in illustrated embodiment.By another kind of scheme, these two parts also can be passed through screw thread, for example are connected to each other by the coarse thread that coarse pitch is arranged.

The layout of cartridge case 3 in shell 2 is chosen as, make cartridge case head 4 in shell 2 general location on the height at place, bonding pad between annular section 6 and the annular section 7.

Below cartridge case 3 open side end walls, be provided with a step switch mechanism 11 in central authorities with cartridge case valve pipe 5 with overlapping.It is used to write down and indicates the relevant discharging operation of having implemented, implement with cartridge case 3 of opening travel.

The decomposition diagram of in Fig. 1, having represented step switch mechanism 11.The ingredient of step switch mechanism 11 cores is planetary transmissions 12, it by planet wheel 13, be in the central gear 14 on the downside fluted disc 15 and form with the ring gear 16 of planet wheel 13 mating reactions.The latter is formed in a non-rotatably wall inboard of fixing pipeline section shape ring 17.The outer wall 18 of ring 17 is tilted to the groove 19 that directionally extends towards the switch direction and passes along the opposed zone of diameter, and they finish with opening towards the seamed edge direction back to ring gear 16 downwards.

Ring gear 16 highly extends generally along 1/2nd of ring 17 vertically, and its outer wall 18 is towards making the especially step of reduced radius back to the ring end rib direction of ring gear 16.

Below ring gear 16, outer wall 18 inboard lock pins 20 that are shaped of ring 17.It extends to inside radially with respect to ring gear 16 with regard to the elementary contour of ring; Correspondingly insert one with respect to ring gear 16 towards radially entering in the inner circular cavity.In addition, be chosen as, make its a small amount of insertion in the surface level that launches by 16 times seamed edges of ring gear generally along the layout of the lock pin 20 of vertical direction Flexible Design.

The diameter of the dish 15 of band central gear 14 is chosen as and is slightly less than the internal diameter of ring 17 in ring gear 16 zones.Central gear 14 and dish 15 preferably are designed to the unified integral body of material.

Be shaped on sawtooth 21 annular with regard to the edge at dish 15 downsides, the lock pin 20 of ring 17 inserts wherein.

Central gear 14 has bastard.For example in illustrated embodiment along be shaped the evenly distributedly tooth 22 of eight central gears of central gear 14 circumference.These teeth 22 are located at planet wheel 13 mating reactions between central gear 14 and ring 17 the ring gear 16 in the central gear rotary course and in same plane.

Planet wheel 13 has one-sided making progress, that is the axle journal 23 that stretches out from the dish 15s of central gear 14.It rotatably is contained in the disc-shaped flange 25 regional interior holes 24 of extending calibration loop 26 court inside radially.Calibration loop 26 outside wall surface are shaped on the scale 27 of annular, and wherein, each scale is corresponding to a plurality of single rotation pitch of the planet wheel 13 of transmission calibration loop 26.

The step-by-step movement of central gear 14 or integrally formed with it dish 15 moves, and dials by the step-by-step switch that is designed to cardinal principle vertical direction resiliently deflectable to refer to that 28 realize.They are engaged on the sawtooth 21 of dish 15 from downside.

Step switch dial refer to 28 with regard to the main axis x of whole step switch mechanism 11, be set to along diameter opposed.For this reason, at first establish one and have the cylindrical core of a central axially extending bore 30 for wheel hub 29 in form.The diameter dimension of through hole 30 is slightly larger than the external diameter of the cartridge case valve pipe 5 that will pass this through hole 30.

Wheel hub 29 is the flange 31 of a radial expansion in the bottom side transition.In the lead segment 32 that flange 31 upper edge diameters are shaped opposed to each other and extend radially, they insert match pilot pin 33 in the groove 19 of ring 17 at one of the internal shaping in its free end zone respectively.

Step switch is dialled and is referred to that 28 take root on lead segment 32 by a horizontal segment respectively, and meanwhile former state keeps from the radially outwardly directed pilot pin 33 of horizontal segment.The step switch that stretches out from horizontal segment is dialled and is referred to that 28 are tilted to directionally and extend, and intersects miter angle substantially with horizontal line, matches with the gradient of ring 17 inside grooves 19.The step switch that constitutes like this is dialled finger-star body and is represented with symbol S.

Step switch dials finger-star body S, the ring 17 of internal gear 16 arranged, be configured as the dish 15 and the calibration loop 26 of one with central gear 14, orientation concentrically with respect to one another on axis x, wherein, the height of ring 17 is chosen as, in this ring, not only hold step switch and dial finger-star body S, and hold together with dish 15 at interior central gear 14.

Whole planetary transmission 12 and step switch are dialled finger-star body S and calibration loop 26, are installed in the dish-shaped step switch mechanism shell 34, and the external diameter of the latter's external diameter and cartridge case 3 matches.

Shell 34 has an outer wall 35.It has a form 36, can read scale 27 on the calibration loop 26 by form.

Cap 37 has central through hole 38, and its is become conical stop elasticity tongue by form of implementation shown in Fig. 1 to 3 39 gradually towards the shell internal direction and centers in the form of implementation of Fig. 1 to 3 expression.Through-hole diameter matches with the diameter of flange 41 waistings 40 that stretch out from cartridge case 3 open side end wall central authorities, and valve pipe 5 bears from flange.

42 are made of independent part at the bottom of the shell.It is connected with shell 34 behind the part that above-mentioned step switch mechanism has been installed, for example welding or be fixed on the shell by press fit with it.

42 are useful on the center pit that passes valve pipe 5 at the bottom of the disc-shaped housing.In addition, at the lock dog 44 that also is shaped on 42 at the bottom of the shell, it inserts and is formed on the outer wall 18 in the corresponding window-like groove 45 in order to locate ground mooring ring 17.

In the same angular range of lock dog 44 was established in the bottom, 42 outer wall had a breach 46 at the bottom of the shell.Flow channel 10 outlet district in installment state it and outer casing underpart annular section 7 matches.

With also irrelevant by the basic structure of Fig. 3 and 4 explanations, the working method of step switch mechanism 11 is as follows:

On-off element (step switch is dialled finger-star body S, ring 17, dish 15, planet wheel 13 and calibration loop 26) and comprise shell at the bottom of 42 shell 34 be arranged in along on the axis of cartridge case 3 longitudinal extensions.Therefore, all be positioned on the cartridge case longitudinal axis x-x except that the step switch of planet wheel 13 mechanism 11 every other members.

Therefore step switch mechanism 11 is concentric with the dark place that valve pipe 5 is contained in shell 2 inner cartridge cases 3, and particularly it is contained in the structure space of reserving between cartridge case head 4 and shell 2 supporting sections 9.Step switch mechanism 11 dials the wheel hub 29 that finger-star body S is contained in switching mechanism shell 34 central authorities with step switch and is bearing on the end face of inhalator shell 2 supporting sections 9.The center line x of step switch mechanism 11 and cartridge case 3 deads in line.The valve pipe 5 that passes wheel hub 29 provides additional centering for whole step switch mechanism assembly.

When the operational stroke of implementing cartridge case 3 and thereby when taking place cartridge case towards the direction vertical movement of supporting section 9, switching mechanism shell 34 is by 4 interlocks of cartridge case head, this causes shell 34, planetary transmission 12 and calibration loop 26 to dial finger-star body S with respect to step switch relatively moving, and the latter is bearing on the supporting section 9.Therefore, the step switch of clamping is dialled and is referred to 28, is dialling by step switch under finger-star body S further support that rotation raises in ring 17 outer wall side channels 19, impels the rotation of toothed disc 15 step-by-step movements to send to.Make central gear 14 rotate identical angle thus simultaneously.Here step switch dial refer to 28 from the orientation that tilts towards an in-plane motion perpendicular to longitudinal axis x-x orientation.

Because central gear 14 only has eight teeth of arranging evenly distributedly along circumference, so be not that each stepping of central gear 14 rotatablely moves and must cause planet wheel 13 to rotatablely move.Exactly, planet wheel 13 is around its axis rotation and the only just enforcement after a plurality of single rotation pitches of central gear 14 processes of transfer of simultaneous calibration loop 26 with it.

By shown in Figure 3, whole step-by-step switch mechanism 11 can by shell 34 lockings be fixed on the flange 41 that the cartridge case head stretches out.Match with the form 36 on the shell, shell annular section 6 has form 47,48 equally with 7 relevant section, and they are by the selected position that faces the jet pipe 8 of shell 2, is in user's the visual field of operation hand-held instruments 1.In order to insert step-by-step switch mechanism 11, it is provided with the guide card 49 that radially stretches out from shell 34 with locating, and guide card inserts in the vertical channel that does not have expression in detail in shell 2 interior views and allows moving movement when stroke is operated.

Interlocking in the zone of cartridge case head flange 41 between step switch mechanism 11 and the cartridge case 3 is chosen as, and extracts together when cartridge case 3 is retained in step switch mechanism 11 on the cartridge case 3 during from shell 2 taking-ups.

Different with it, also there is possibility as schematically illustrating among Fig. 4, make step switch mechanism 11 and shell 2 interlockings.One or more lock dogs that radially inwardly stretch into 51 of shell 2 are crossed by step switch mechanism 11 in the process of equipment for the first time for this reason, and these lock dogs 51 flange sections of radially being stretched out from switching mechanism shell 34 52 is held from the bottom then.

Lock dog 51 is orientated as along their vertical direction, guarantees that step switch mechanism 11 can vertical moving when cartridge case 3 is implemented the stroke operation.

Make lock dog 51 constitute anchor clamps by selected layout, it is trapped in the shell 2 step switch mechanism 11 when cartridge case 3 is extracted.

By the another kind of form of implementation that does not have expression, can adopt a kind of combination by form of implementation shown in Fig. 3 and 4, wherein, step switch mechanism 11 is fixed on the cartridge case head flange 41 by stop elasticity tongue 39 kaysers.This preassembled cartridge case-step switch mechanism assembly inserts in the shell 2 before using hand-held instruments 1 for the first time, here, cross lock dog 51 on the instrument outer shell in the radially-protruding flange sections 52 in switching mechanism shell 34 upper edges corresponding to second kind of embodiment, thereby cause step switch mechanism 11 final fixing shell 2 in.Therefore be chosen as byer force in the interlocking between step switch mechanism 11 and the shell 2, when extracting cartridge case 3 after the use for the first time, cause cancelling the interlocking between cartridge case 3 and the step switch mechanism 11 than the interlocking between step switch mechanism 11 and the cartridge case 3.Cartridge case 3 insert again since will with 41 mating reactions of cartridge case head flange be more weak stop Flexible Design, thereby be easy to carry out.

Not only all have possibility in above-mentioned form of implementation but also in by form of implementation shown in Figure 4, after cartridge case 3 was taken away from shell 2, the interlocking between instrument outer shell 2 and the step switch mechanism 11 automatically terminated.

Fig. 4 a represents another kind of form of implementation, and it is with the fundamental construction that is designed to shown in Figure 4.For further secure cartridge 3, remove common valve pipe 5 and be fixedly clamped inside and outside the supporting section 9 on the hand-held instruments shell, also in the zone of the shell annular section 6 on top, establish the locking device of cartridge case 3.Therefore, the shell annular section 6 on top stretches out directed obliquely detention stylus pin 55 downwards in inside surface one side, and they and housing parts 6 materials on top constitute one uniformly.These detention stylus pins 55 are orientated as, and their free seamed edge is entered in the cartridge case 3 waisting districts that are formed in cartridge case head 4 back with cartridge case 3 coordinations the time kayser, thus locking cartridge case 3.

In addition, detention stylus pin 55 is configured as, and they can be crossed by cartridge case head 4 when shell 2 is equipped cartridge case 3 at least for the first time.

Therefore cartridge case 3 is by hand-held instruments shell 2, and especially the housing parts 6 on top fetters.

Fig. 5 represents another kind of form of implementation.Also remain in the housing parts 6 on top by this form of implementation cartridge case 3 by detention stylus pin 55.The housing parts 6 on top can separate with the lower case part 7 that constitutes jet pipe 8, and here, these two housing parts 6 carry out in the zone of dish-shaped step switch mechanism shell 34 positions with 7 the cardinal principle of separating.

In the assembled state of these two housing parts 6 and 7, they are interlocking preferably, and housing parts has lock dog and another housing parts has the correspondingly locked groove of location for this reason.

Based on described possible separation, can reach and clean jet pipe 8 better, especially there is the folding of supporting section 9 to turn the district.Can also take measures to make cleaning to be easy to more carry out, the whole step-by-step switch mechanism 11 that promptly is designed to the close-coupled assembly can take out from lower case part 7 easily, and thereby can implement independent cleaning.In illustrated embodiment, do not establish fixed mechanism, for example with the lock dog 51 of flange sections 52 mating reactions.Exactly, reach by the mating reaction with cartridge case 3 at the whole step switch of user mode mechanism 11 fixing in lower case part 7, this is (also the representing by the form of implementation shown in Fig. 4 a) of realizing under step switch mechanism 11 is positioned at situation between the end face that supporting section 9 and cartridge case head 4 face.

In this form of implementation,, prevent that step switch mechanism 11 from moving around axis x-x rotation also by the sealing of the shape between step switch mechanism 11 and the lower case part 7.

All disclosed features are the important content of (basis) invention.Also absorbed relevant/priority document (copy request formerly) the disclosed content of enclosing in the disclosed content of the application, also for this purpose, the feature of these files is received in claims of the application comprehensively.

Claims (7)

1. a hand-held instruments (1), be used for according to dosage discharging the spray form material, especially the medicine of Xi Ruing, comprise that one can move to the discharge open site by pressurization straight line in shell (2), its valve pipe (5) is contained in cartridge case (3) on the supporting section (9) and a switching mechanism that is used to write down and show the discharging operation of having implemented (11) that moves when cartridge case (3) is implemented opening travel, this switching mechanism (11) is contained in central authorities and cartridge case (3) the open side end wall below and described cartridge case valve pipe (5) overlap joint in the shell (34), and comprise the step switch organization switch element (S that is contained in the shell (34), 28,29,16,17,20,15,21,23,13,26), they are around being in cartridge case (3) axis rotation longitudinally, wherein, the oblique sheet of elasticity is towards also impelling step switch mechanism to rotate in this case with respect to the transverse presentation direction is crooked longitudinally, it is characterized by: a step switch on being placed in supporting section (9) is dialled finger-star body (S), described shell (34) is together with its bottom (42) and step switch mechanism (11,12) can be moved towards supporting section (9) by sending to downwards of cartridge case as a whole, and the described step switch of this extension campaign rotation is dialled finger-star body (S), wherein, the calibration loop (26) of described step switch mechanism (11) is dialled finger-star body (S) by described switch and is rotated around described cartridge case longitudinal axis.

2. according to the described hand-held instruments of claim 1, it is characterized by, the calibration loop (26) of described step switch mechanism (11) is rotated by ring gear (16) step-by-step movement by a planet cogwheel gearing (12), wherein, planet wheel (13) is contained in the hole (24) of calibration loop (26) and relevant central gear (14) is on the toothed fluted disc of downside (15).

3. according to claim 1 or 2 described hand-held instruments, it is characterized by, described ring gear (16) have at least one from following seamed edge be inclined upwardly ground directed, be used to insert step switch and dial the groove (19) that the step switch of finger-star body (S) is dialled finger (28).

4. according to claim 1 or 2 described hand-held instruments, it is characterized by, the step switch mechanism shell (34) that is designed to flat dish has a center pit (38) that is used to pass valve pipe (5), this hole (38) for the flange (41) that is introduced in the cartridge case open side and stretches out is expanded, is implemented the elasticity locking between step switch mechanism shell (34) and the cartridge case (3) in the end of cartridge case one side in this lug area back.

5. according to claim 1 or 2 described hand-held instruments, it is characterized in that, the step switch mechanism shell (34) that is designed to flat dish promptly except the flange (41) that is locked at cartridge case (3) is gone up, also is implemented in second interior stronger locking of shell (2) of hand-held instruments by dual locking.

6. according to claim 1 or 2 described hand-held instruments, it is characterized by, the stronger cartridge case (3) that is locked at can automatically terminate after the shell (2) of hand-held instruments takes out in the described shell at hand-held instruments (2).

7. according to claim 1 or 2 described hand-held instruments, it is characterized by, described cartridge case (3) prevents to be pulled out by detention pin (55) locking, and they are designed to extend to oblique below in the shell (2) of hand-held instruments.

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