Summary of the invention
The present invention provides a kind of medicine delivery device, in the prior art at high cost, ropy to solve the problems, such as.
The present invention provides a kind of medicine delivery device, medicine delivery device includes: shell, and shell has interconnectedMedicine cavity and accommodating chamber, medicine cavity is for placing medicine bottle；Driving mechanism is movably disposed in accommodating chamber, and driving mechanism includes drivingDynamic component, tail-hood and dose, one end of drive member are driving end, drive and are provided with receiving hole on end, doseOne end is insertion end, and the insertion end of dose is set in drive member by the other end of drive member, and insertion end is wornIn receiving hole, tail-hood is arranged in receiving hole, and clamping structure is provided between drive member, tail-hood and dose, is clampedStructure is for fixing drive member, tail-hood and dose；Injection mechanism, injection mechanism are threaded through in medicine cavity and accommodating chamber；It passesMotivation structure is arranged between driving mechanism and injection mechanism, and driving mechanism drives injection mechanism to be injected by transmission mechanism.
Further, the bottom setting through-hole of receiving hole and first boss, first boss are located at the side of through-hole, dosage structureIt is provided with the first inserted sheet in the insertion end of part, second boss is provided on the inner wall of the first inserted sheet, the first inserted sheet is inserted by through-holeTo receiving hole, and first boss and second boss are engaged by clamping, so that dose is fixedly connected with drive member.
Further, one end towards drive member of tail-hood is provided with the second inserted sheet, and the second inserted sheet is plugged in first and insertsIn the gap that piece and drive member inner wall are formed, the second inserted sheet is for fixing position of first inserted sheet in through-hole.
Further, limiting section is provided between drive member and tail-hood, limiting section is solid for making tail-hood and drive memberFixed connection.
Further, circumferentially arranged on the side wall of tail-hood to have the first limiting slot, third is provided on the inner wall of receiving holeBoss, third boss are correspondingly arranged with the first limiting slot, opposite to limit tail-hood by the first limiting slot and the cooperation of third bossThe axial displacement of drive member.
Further, axially disposed on the side wall of tail-hood to have the second limiting slot, the 4th is provided on the inner wall of receiving holeBoss, the 4th boss are correspondingly arranged with the second limiting slot, opposite to limit tail-hood by the second limiting slot and the cooperation of the 4th bossDrive member rotation.
Further, driving mechanism further includes supporting element, and supporting element is fixed in accommodating chamber, and drive member is movableGround is arranged in supporting element, and dose is located at the outside of supporting element, and supporting element is threadedly coupled with drive member, supporting element and drivePosition limiting structure is provided between dynamic component, position limiting structure is deviate from out of supporting element for limiting drive member.
Further, drive member and supporting element are provided with helicitic texture, are provided on the helicitic texture of drive memberPositive stop lug boss, limiting slot is provided on the helicitic texture of supporting element, and positive stop lug boss and limiting slot form position limiting structure, positive stop lug bossCooperate with limiting slot to prevent drive member from deviating from out of supporting element.
Further, positive stop lug boss is located at the one end at the separate driving end of drive member, the separate driving end of drive memberEnd be provided with opening, the axis direction along drive member that is open extends, and the circumferential direction being open along drive member is located atThe side of positive stop lug boss.
Further, supporting element and the screw thread of drive member are multiple line structure, and there are two limits for setting in drive memberBoss and two openings, two positive stop lug boss are symmetricly set on the two sides of drive member, two positive stop lug boss and two openings oneOne is correspondingly arranged, and there are two limiting slot, two limiting slots and two positive stop lug boss to correspond for setting on supporting element, to limit jointlyDrive member processed is deviate from out of supporting element.
Further, driving mechanism further includes caudal peduncle, and transmission mechanism includes the other end along driving end to drive memberConnecting cylinder, the first rotating cylinder gear and the second rotating cylinder gear, the injection mechanism part that direction is set gradually are threaded through in drive member,Connecting cylinder, the first rotating cylinder gear and the second rotating cylinder gear are set on injection mechanism, and the first rotating cylinder gear and injectorStructure connection, connecting cylinder have a first end and a second end, and the first end of connecting cylinder is pierced by by tail-hood, the first end of caudal peduncle and connecting cylinderConnection, the first rotating cylinder gear are engaged with the first end face of the second rotating cylinder gear by gear, the separate driving end of drive memberStep is provided on inner wall, the side towards caudal peduncle of step is provided with gear, the second end face and gear of the second rotating cylinder gearEngagement, the first rotating cylinder gear, the second rotating cylinder gear and connecting cylinder can be moved axially with respect to drive member.
It applies the technical scheme of the present invention, which includes shell, driving mechanism, injection mechanism and transmissionMechanism.Wherein, shell has interconnected medicine cavity and accommodating chamber, and medicine cavity is for placing medicine bottle.Driving mechanism is movably setIt sets in accommodating chamber, and driving mechanism includes drive member, tail-hood and dose, specifically, one end of drive member is to driveMoved end drives and is provided with receiving hole on end, and one end of dose is insertion end, and the insertion end of dose is by drive memberThe other end is set in drive member, and insertion end is threaded through in receiving hole, and tail-hood is arranged in receiving hole, drive member, tailClamping structure is provided between lid and dose, clamping structure is for fixing drive member, tail-hood and dose.InjectorStructure is threaded through in medicine cavity and accommodating chamber, and transmission mechanism is arranged between driving mechanism and injection structure, and driving mechanism passes through transmissionMechanism driving injection mechanism is injected.
It is arranged by the way that the insertion end of dose to be threaded through in the receiving hole of drive member, and by tail-hood in receiving holeIt is interior, the fixation of drive member, tail-hood and dose is realized using clamping structure.Using the above structure, compared with the prior artMiddle to be fixed in the way of bonding, the technical program can reduce the processing cost of device, the quality of lifting device.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention showsExamples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows the structural schematic diagram of the medicine delivery device provided according to embodiments of the present invention；
Fig. 2 shows the cross-sectional views of the driving mechanism in Fig. 1；
Fig. 3 shows the installation diagram of drive member and dose in Fig. 1；
Fig. 4 shows the structural schematic diagram of the dose in Fig. 1；
Fig. 5 shows the structural schematic diagram of the drive member in Fig. 1；
Fig. 6 shows the another structural schematic diagram of the drive member in Fig. 1；
Fig. 7 shows the structural schematic diagram of the tail-hood in Fig. 1；
Fig. 8 shows the another cross-sectional view of the driving mechanism in Fig. 1；
Fig. 9 shows the another structural schematic diagram of the drive member in Fig. 1；
Figure 10 shows the structural schematic diagram of the supporting element in Fig. 1；
Figure 11 shows the installation diagram of drive member and supporting element in Fig. 1；
Figure 12 shows the another structural schematic diagram of the drive member in Fig. 1；
Figure 13 shows the structural schematic diagram of the second rotating cylinder gear in Fig. 1；
Figure 14 shows the structural schematic diagram of the injection mechanism in Fig. 1；
Figure 15 shows the structural schematic diagram of the big push rod in Figure 14；
Figure 16 shows the structural schematic diagram of the driving cylinder of the push rod in Fig. 1；
Figure 17 shows the structural schematic diagrams of the small push rod in Fig. 1；
Figure 18 shows the structural schematic diagram of the second thrust rod gear in Fig. 1；
Figure 19 shows the structural schematic diagram of the first rotating cylinder gear in Fig. 1；
Figure 20 shows the another structural schematic diagram of the supporting element in Fig. 1.
Wherein, the above drawings include the following reference numerals:
1, caudal peduncle；
2, drive member；2a, through-hole；2b, first boss；2c, third boss；2d, positive stop lug boss；2e, gear；2f, appearanceReceive hole；2g, the 4th boss；2h, opening；
3, tail-hood；3a, the second inserted sheet；3b, the first limiting slot；3c, the second limiting slot；
4, dose；4a, the first inserted sheet；4b, second boss；4c, insertion end；
6, connecting cylinder；7, the first rotating cylinder gear；7a, limit rib；
8, supporting element；8a, limiting slot；
9, the second rotating cylinder gear；10, big push rod；10a, limiting slot；
11, third rotating cylinder gear；12, the first thrust rod gear；13, push rod drives cylinder；14, the second thrust rod gear；14a, limitPosition muscle；15, fixed plug；
16, small push rod；16a, limiting slot；
17, coyote hole；18, little spring；19, big spring；20, middle spring；21, medicine bottle.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, completeSite preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.BelowDescription only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or makeAny restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premiseUnder every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in Figure 1 to 11, the embodiment of the present invention provides a kind of medicine delivery device, which includes:Shell, driving mechanism, injection mechanism and transmission mechanism.Wherein, shell has interconnected medicine cavity and accommodating chamber, and medicine cavity is usedIn placement medicine bottle.Driving mechanism is movably disposed in accommodating chamber, wherein can be configured to driving mechanism execute setting fortuneThe drug dose so as to setting device is moved, and driving mechanism is configured to be used to start and execute distribution movement to distribute medicineAgent amount.Specifically, driving mechanism includes drive member 2, tail-hood 3 and dose 4.Specifically, dose 4 is for adjustingBy the dosage of conveying drug and display institute's count number.
Wherein, one end of drive member 2 is driving end, and drives and be provided with receiving hole 2f, one end of dose 4 on endInsertion end for insertion end, dose 4 is set in drive member 2 by the other end of drive member 2, and insertion end is threaded throughIn receiving hole 2f.In order to further enhance the fixed effect of device, tail-hood 3 is arranged in receiving hole 2f, and in drive member2, clamping structure is set between tail-hood 3 and dose 4, specifically, the clamping structure is for fixing drive member 2,3 and of tail-hoodDose 4, to complete the fixation to driving mechanism.Specifically, by between drive member 2, tail-hood 3 and dose 4Clamping structure is set, 4 three drive member 2, tail-hood 3 and dose parts can be made mutually to be clamped, to make three partsIt can neither move axially, and cannot relatively rotate each other, to realize the fixation to drive member.Specifically, injection mechanism is threaded through in medicine cavity and accommodating chamber, and transmission mechanism is arranged between driving mechanism and injection structure, driving mechanismInjection mechanism is driven to be injected by transmission mechanism.Also, dose 4 is set in drive member 2, tail-hood 3 is setIt sets in the receiving hole 2f of drive member 2, the volume of device, the portability of lifting device can be reduced.
Using technical solution provided by the present application, the medicine delivery device include shell, driving mechanism, injection mechanism andTransmission mechanism.Wherein, shell has interconnected medicine cavity and accommodating chamber, and for medicine cavity for placing medicine bottle, driving mechanism is movableBe arranged in the accommodating chamber of shell.Specifically, when being assembled to driving mechanism, first by the insertion end of dose 4 byThe one end at the separate driving end of drive member 2 is set in drive member 2, and insertion end is made to be threaded through the receiving of drive member 2In the 2f of hole.Then tail-hood 3 is arranged in receiving hole 2f, and utilizes and is arranged between drive member 2, tail-hood 3 and dose 4Clamping structure complete fixation to driving mechanism.By the way that driving mechanism is fixed using clamping structure, convenient for three intoRow is fixed, and the production cost of device is reduced, and the quality of device is able to ascend using this fixed form, and then promote productYields extends the service life of product.
As shown in Figures 3 to 6, through-hole 2a and first boss 2b is arranged in the bottom of receiving hole 2f, and first boss 2b is located at logicalThe side of hole 2a.Wherein, first boss 2b can be located at through-hole 2a where upper surface or on the side wall of receiving hole 2f,In the present embodiment, first boss 2b is located at the upper surface of through-hole 2a.In order to guarantee the fixed effect of dose 4 and drive member 2Fruit is provided with the first inserted sheet 4a in the insertion end of dose 4, and is provided with second boss on the inner wall of the first inserted sheet 4a4b, the first inserted sheet 4a are inserted into receiving hole 2f by through-hole 2a, and first boss 2b and second boss 4b is engaged by clamping, so that agentAmount component 4 is fixedly connected with drive member 2.In order to further enhance dose 4 and 2 fixed effect of drive member, in this realityIt applies in example, the bottom of receiving hole 2f is evenly arranged there are three through-hole 2a, and accordingly dose 4 sets that there are three the first inserted sheet 4a.Specifically, three second boss 4b of dose 4 can be expanded outwardly when assembling to dose 4 and drive member 2Deformation makes in the first inserted sheet 4a insertion through-hole 2a, and subsequent second boss 4b can reset, and first boss 2b can be with second boss 4bIt is engaged by clamping, is fixedly connected with completing dose 4 with drive member 2.Using the above structure, due to the first of dose 4Inserted sheet 4a is inserted into the through-hole 2a of drive member 2, and dose 4 cannot rotate with respect to drive member 2, due to dose4 second boss 4b and the first boss 2b phase of drive member 2 are clamped, and with respect to drive member 2 axial direction cannot occur for dose 4It is mobile.
As shown in fig. 7, one end towards drive member 2 of tail-hood 3 is provided with the second inserted sheet 3a, and the second inserted sheet 3a is pluggedIn the gap that the first inserted sheet 4a and 2 inner wall of drive member are formed, the second inserted sheet 3a is for fixing the first inserted sheet 4a in through-hole 2aInterior position.Accordingly, it is again provided with three the second inserted sheet 3a in the present embodiment, specifically, the second inserted sheet 3a insertion drivingIn the gap that component 2 and dose 4 generate after assembling, so that the first inserted sheet 4a of dose 4 does not expand outwardly deformationSpace, to guarantee the fixed effect of drive member 2 and dose 4.Specifically, in the present embodiment, the second inserted sheet 3aIn the gap that insertion drive member 2 and dose 4 generate after assembling, and one end of the second inserted sheet 3a is located in through-hole 2a.
In other embodiments, the length that can control the second inserted sheet 3a, makes it be only inserted drive member 2 and doseAfter in the gap generated after 4 assemblings, the second inserted sheet 3a is not inserted into through-hole 2a, the second inserted sheet 3a is made to be integrally located at through-hole 2a'sOutside.Using the above structure, it not only can use the second inserted sheet 3a and fixed position of the first inserted sheet 4a in through-hole 2a, but also can dropThe manufacturing cost of low device.
In the present embodiment, limiting section is provided between drive member 2 and tail-hood 3, limiting section is for making tail-hood 3 and drivingComponent 2 is fixedly connected, with prevent tail-hood 3 to be detached from from drive member 2 and/or tail-hood 3 relative to drive member 2 rotate.
Specifically, being provided with the first limiting slot 3b, the first limiting slot 3b on the side wall of tail-hood 3 circumferentially, and holdReceive hole 2f inner wall on be provided with third boss 2c, third boss 2c is correspondingly arranged with the first limiting slot 3b, pass through first limitThe axial movement that slot 3b and third boss 2c cooperates to limit tail-hood 3 with respect to drive member 2, and then avoid tail-hood 3 from driving structureIt is detached from part 2.
Wherein, axially disposed on the side wall of tail-hood 3 to have the second limiting slot 3c, and is provided on the inner wall of receiving hole 2fFour boss 2g, the 4th boss 2g are correspondingly arranged with the second limiting slot 3c, by the second limiting slot 3c and the 4th boss 2g cooperate withTail-hood 3 is limited to rotate relative to drive member 2.
In the present embodiment, circumferentially arranged on the side wall of tail-hood 3 to have a second limiting slot 3c, accordingly, receiving holeA third boss 2c is provided on the inner wall of 2f.It is axially disposed there are three the second limiting slot 3c on the side wall of tail-hood 3, and threeIt a interval second limiting slot 3c and is uniformly distributed, accordingly, there are three the 4th boss 2g for setting on the inner wall of receiving hole 2f.Specifically, the second limiting slot 3c is vertically arranged with the first limiting slot 3b, and the second limiting slot 3c runs through the first limiting slot 3b.Accordingly,4th boss 2g is vertically arranged with third boss 2c, and one end of the 4th boss 2g of two of them is abutted with third boss 2c, anotherA 4th boss 2g passes through third boss 2c.By the way that one of them the 4th boss 2g is passed through third boss 2c, and make its endIt is concordant with the end of drive member 2, when being assembled to tail-hood 3 and drive member 2, using the 4th boss 2g to tail-hood3 are positioned and are oriented to.
Specifically, in the present embodiment, tail-hood 3 is that elastic component passes through when assembling to tail-hood 3 and drive member 2The power for applying an axial direction to tail-hood 3, utilizes the 4th boss 2g or drive member 2 and dose 4 across third boss 2cThe gap generated after assembling is positioned and is oriented to tail-hood 3, and tail-hood 3 is pressed into receiving hole 2f, passes through the first limiting slot3b and third boss 2c cooperates, convex by the second limiting slot 3c and the 4th to limit the axial displacement of tail-hood 3 Yu drive member 2Platform 2g cooperation is rotated with limiting tail-hood 3 relative to drive member 2.Using the above structure, make drive member 2, tail-hood 3 and dosage structure4 three parts of part are mutually locked, can be avoided dose 4 and are detached from from drive member 2.
As shown in Figs. 8 to 11, driving mechanism further includes supporting element 8, and supporting element 8 is fixed in accommodating chamber, drivingComponent 2 is movably disposed in supporting element 8, and dose 4 is located at the outside of supporting element 8, so set, convenient for observation dosageScale on component 4.In the present embodiment, one end of supporting element 8 is fixedly connected with the casing, and is located in shell, supporting element 8The other end is located at the inside of dose 4.Wherein, supporting element 8 is threadedly coupled with drive member 2, is that the connection of lifting device is steadyIt is qualitative, position limiting structure is provided between supporting element 8 and drive member 2, position limiting structure is for limiting drive member 2 from supporting elementAbjection in 8.Specifically, passing through 2 regulating dosage of drive member, when the maximum agent for being adjusted to device by setting position limiting structureWhen at amount, position limiting structure can prevent drive member 2 from deviating from from supporting element 8.
Specifically, drive member 2 and supporting element 8 are provided with helicitic texture, it is provided on the helicitic texture of drive member 2Positive stop lug boss 2d is provided with limiting slot 8a, positive stop lug boss 2d and limiting slot 8a on the helicitic texture of supporting element 8 and forms limit knotStructure, positive stop lug boss 2d and limiting slot 8a cooperate to prevent drive member 2 from deviating from out of supporting element 8.Wherein, in the present embodiment,By disconnecting the helicitic texture part on supporting element 8, the gap of helicitic texture is made to form limiting slot 8a.
Specifically, positive stop lug boss 2d is located at the one end at the separate driving end of drive member 2, accordingly, limiting slot 8a is located atOne end of the close drive member 2 of supporting element 8, and positive stop lug boss 2d and limiting slot 8a are arranged at the screw thread cut-off of helicitic texturePlace.For the ease of being assembled to drive member 2 and supporting element 8, it is provided with out in the end at the separate driving end of drive member 2Mouth 2h, opening 2h extend along the axis direction of drive member 2, and the 2h that is open is located at limit convex along the circumferential direction of drive member 2The side of platform 2d.Wherein, the end face of the close opening 2h of positive stop lug boss 2d is parallel with opening 2h, the separate opening of positive stop lug boss 2dThe end face of 2h is inclined-plane, and chamfered is done in the end of limiting slot 8a.
When assembling to drive member 2 and supporting element 8, the positive stop lug boss 2d of drive member 2 first touches supporting element 8Limiting slot 8a, specially positive stop lug boss 2d has bevelled side and first contacts with limiting slot 8a.Then drive member 2 is pressedBe open 2h place, make the Leading Edge Deformation of drive member 2, drive member 2 be fitted into supporting element 8, and pass through positive stop lug boss 2d andLimiting slot 8a cooperates to prevent drive member 2 from deviating from out of supporting element 8.Also, by the way that inclined-plane is arranged on positive stop lug boss 2d, andChamfered is done into the end of limiting slot 8a, convenient for assembling to drive member 2 and supporting element 8.
Specifically, supporting element 8 and the screw thread of drive member 2 are multiple line structure, so can lifting device stable connectionProperty.In the present embodiment, supporting element 8 and the screw thread of drive member 2 are disposed as three helicitic textures.Wherein, supporting element 8 and drivingComponent 2 is the composite structure of single thread and double thread, to form three helicitic textures.Wherein, in drive member 2 there are two settingsPositive stop lug boss 2d and two opening 2h, two positive stop lug boss 2d are symmetricly set on the two sides of drive member 2, two positive stop lug boss withTwo opening 2h are arranged in a one-to-one correspondence, and there are two limiting slot 8a, two limiting slot 8a and two positive stop lug boss for setting on supporting element 82d is corresponded, and is deviate from limiting drive member 2 jointly out of supporting element 8.Using the above structure, make positive stop lug boss 2d and limitIts stuck point is symmetrical when slot 8a is in contact, and further improves the stability of structure.Also, it is utilized in compared with the prior artThe mode that supporting element 8 is processed in spiral core pulling, device provided in this embodiment need to only be can be realized using mold to supportThe production of part 8, the quality without other processes, so convenient for simplified manufacturing procedure, promotion and control device.
In the present embodiment, driving mechanism further includes caudal peduncle 1, and transmission mechanism includes along the another of driving end to drive member 2Connecting cylinder 6, the first rotating cylinder gear 7 and the second rotating cylinder gear 9, the injection mechanism part that the direction of one end is set gradually are threaded through driveIn dynamic component 2, connecting cylinder 6, the first rotating cylinder gear 7 and the second rotating cylinder gear 9 are set on injection mechanism, and the first rotating cylinderGear 7 is connect with injection mechanism, and connecting cylinder 6 has a first end and a second end, and the first end of connecting cylinder 6 is pierced by by tail-hood 3, caudal peduncle1 connect with the first end of connecting cylinder 6, and caudal peduncle 1 can rotate with respect to connecting cylinder 6, so set, when pressing caudal peduncle 1 carries outWhen injection, convenient for the progress of injection operation.
As shown in Fig. 2, Figure 12 and Figure 13, the first end face of the first rotating cylinder gear 7 and the second rotating cylinder gear 9 passes through gearIt engages, is provided with step on the inner wall at the separate driving end of drive member 2, the side towards caudal peduncle 1 of step is provided with gearThe second end face of 2e, the second rotating cylinder gear 9 are engaged with gear 2e, the first rotating cylinder gear 7, the second rotating cylinder gear 9 and connecting cylinder 6It can be moved axially with respect to drive member 2.Using the above structure, when Rotary-drive member 2, the first 7, second turns of rotating cylinder gearCylinder gear 9 and connecting cylinder 6 can carry out a degree of axial movement with respect to drive member 2, and then make the second rotating cylinder gear 9It is rotated relative to the first rotating cylinder gear 7 or drive member 2, ensure that transmission mechanism by the power transmission of driving mechanism to injectorStructure, and then complete injection operation.
As shown in Figure 14 to Figure 20, injection mechanism include big push rod 10, third rotating cylinder gear 11, the first thrust rod gear 12,Push rod drives cylinder 13, the second thrust rod gear 14 and small push rod 16.Wherein, the inner surface of the first rotating cylinder gear 7 has limit ribThe outer surface of 7a, big push rod 10 have limiting slot 10a, are cooperated by limit rib 7a and limiting slot 10a, make the first rotating cylinder gear 7Can only relatively large push rod 10 move axially, it is not possible to relatively rotate.Wherein, third rotating cylinder gear 11 and the first push rodGear 12 is engaged by gear, and the second thrust rod gear 14 is engaged with big push rod 10 by gear.
In the present embodiment, spring 20 in being provided between big push rod 10 and the first thrust rod gear 12, and middle spring 20In Pre strained state, first thrust rod gear 12 is in third rotating cylinder gear 11 and engages under the action of the elastic force of middle spring 20State.Also, little spring 18 is provided between tail-hood 3 and connecting cylinder 6, and little spring 18 is in Pre strained state.By above-mentionedStructure, when just being adjusted to syringe plus when scale, drive member 2 can opposite second rotating cylinder gear 9 rotate；When to noteWhen emitter carries out readjustment reduction scale, the opposite second rotating cylinder gear 9 of the first rotating cylinder gear 7 meeting is rotated, but due to little spring18 beat generated torsion less than the torsion for separating third rotating cylinder gear 11 from meshing state with the first thrust rod gear 12, instituteWill not generate injection effect regardless of positive tune or callback operation.
As shown in Figure 16 to Figure 18, the inner surface of the second thrust rod gear 14 has limit rib 14a, the outer surface of small push rod 16With limiting slot 16a, cooperated by limit rib 14a and limiting slot 16a, and since the second thrust rod gear 14 is fixed on push rod drivingOn cylinder 13, small push rod 16 can only be moved axially with respect to the second thrust rod gear 14, it is not possible to which opposite second thrust rod gear 14 is sent outRaw rotation.
In the present embodiment, push rod driving cylinder 13 is fixed on fixed plug 15, and the inner wall of push rod driving cylinder 13 is setIt is equipped with internal screw thread, the outer surface of small push rod 16 is provided with external screw thread.Since push rod drives cylinder 13 and small push rod 16 to be threadedly engaged,When small push rod 16 rotates, small push rod 16 can opposite push rod driving cylinder 13 move axially, and then realize inject orReset operation.Also, in order to promote small push rod 16 to the propulsion effect of drug, in one end of the separate drive member of small push rod 16It is provided with piston.
In the present embodiment, which further includes coyote hole 17, and the cavity of coyote hole 17 is medicine cavity.When medicine bottleAfter 21 are put into coyote hole 17, the mode that coyote hole 17 is connected through a screw thread is arranged on fixed plug 15, medicine bottle 21 is filled in close to fixed15 side can drive cylinder 13 to contact with push rod, and apply an axial force to push rod driving cylinder 13, make the second thrust rod gear 14Realize that gear engages with big push rod 10.Also, big spring is provided between cylinder 13 and third rotating cylinder gear 11 since push rod drives19, when under coyote hole 17 being dismantled from fixed plug 15, the meeting under the action of elastic force of big spring 19 of the second thrust rod gear 14Relatively large push rod 10 is subjected to displacement, and the second thrust rod gear 14 is not in meshing state with big push rod 10 at this time.
The structure of device is carried out furtherly below by the working principle of medicine delivery device provided in this embodimentIt is bright:
(1) injection process
Caudal peduncle 1 is moved with hand push, caudal peduncle 1 is passed axial force by connecting cylinder 6, the first rotating cylinder gear 7, the second rotating cylinder gear 9It is delivered to drive member 2, and since drive member 2 is threadedly coupled with supporting element 8, drive member 2 is under the action of axial thrustIt can rotate.When drive member 2 rotates, due to drive member 2, the first rotating cylinder gear 7 and the second rotating cylinder gear 9 itBetween be gear engagement, drive member 2 will drive the second rotating cylinder gear 9 rotation, the second rotating cylinder gear 9 drive the first rotating cylinder gear7 rotations.Also, due to the cooperation of limit rib 7a and limiting slot 10a, big push rod 10 can rotate.Due to the second push rod at this timeGear 14 is engaged with big push rod 10 by gear, and the second thrust rod gear 14 can also rotate.Pass through limit rib 14a and limiting slot16a cooperation, small push rod 16 can rotate with the second thrust rod gear 14, and since push rod drives cylinder 13 and small push rod 16 for screw threadCooperation, small push rod 16 push rod driving cylinder 13 can move axially relatively, and then realize injection effect.
(2) reseting procedure
Coyote hole 17 is rotated, coyote hole 17 is disassembled from fixed plug 15, under the action of the elastic force of big spring 19, secondThe relatively large push rod 10 of the meeting of thrust rod gear 14 is subjected to displacement, and the second thrust rod gear 14 is not in meshing state with big push rod 10 at this time.Push small push rod 16, rotate small push rod 16 under the action of thrust, and due to the second thrust rod gear 14 not with big push rod10 are in meshing state, and while small push rod 16 is rotated and moved axially, big push rod 10 can be remain stationary.ContinueSmall push rod 16 is pushed, completes to reset until it is returned to original state.
(3) process is adjusted back
Reducing scale by Rotary-drive member 2 counterclockwise, drive member 2 and the second rotating cylinder gear 9 are opposing stationary at this time,First rotating cylinder gear 7 can opposite second rotating cylinder gear 9 rotate, due under the action of the elastic force of middle spring 20, thirdRotating cylinder gear 11 and the first thrust rod gear 12 can be in meshing state, and little spring 18 beat caused by torsion be less than and make thirdThe torsion that rotating cylinder gear 11 is separated with the first thrust rod gear 12 from meshing state, so injection effect will not be generated during readjustmentFruit.
(4) process is just adjusted
Increase scale by rotating clockwise drive member 2, the first rotating cylinder gear 7 and the second rotating cylinder gear 9 are opposite at this timeIt is static, drive member 2 can opposite second rotating cylinder gear 9 rotate, due under the action of the elastic force of middle spring 20, thirdRotating cylinder gear 11 and the first thrust rod gear 12 can be in meshing state, and little spring 18 beat caused by torsion be less than and make thirdThe torsion that rotating cylinder gear 11 is separated with the first thrust rod gear 12 from meshing state, so injection effect will not be generated during positive adjustFruit.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted rootAccording to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singularAlso it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packetInclude " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodimentsIt is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawingThe size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevantMethod and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanationA part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, andNot by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar labelSimilar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attachedIt does not need that it is further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closesSystem, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate thatIt must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manageSolution is limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top "," ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spyThe spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figureExcept different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devicesIt will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), andAnd respective explanations are made to the opposite description in space used herein above.
In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient forCorresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to thisThe limitation of invention protection scope.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this fieldFor art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repairChange, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.