CN209548482U - Driving means and syringe - Google Patents

Abstract

The utility model embodiment provides a kind of driving means and syringe, and one end of driving means shell is push end, and the other end is adjustable side；Scale ring outer surface is provided with push amount scale mark, the inner thread connection of outer surface and shell；Adjusting knob is mounted on the adjustable side of shell, and is fixedly connected with calibration loop, and calibration loop is rotated with the rotation of adjusting knob；It adjusts drive sleeve to be threaded through in shell, one end is connect with adjusting knob, is adjusted drive sleeve and is rotated with the rotation of adjusting knob；The outer circle and adjusting drive sleeve of push rod are to be threadedly coupled；The push end of shell is additionally provided with the spline structure of limitation push rod rotation；Push button is mounted on the adjustable side of shell, can press to the movement of push end with pressing for push button；Lock piece is mounted on the adjustable side of shell, lock piece connection push button and adjusting drive sleeve, and when pressing push button, if push rod is stopped by external force to the movement of push end, it is mobile to push end that lock piece limits adjusting drive sleeve.

Description

Driving means and syringe

Technical field

The utility model relates to the field of medical instrument technology, in particular to a kind of driving means and syringe.

Background technique

By taking the syringe that diabetes patient uses as an example: for diabetic, blood glucose target is critically important, need It periodically to pay close attention to and record, and in order to reduce the fluctuation of patient blood glucose's index, need to control by drug.Human insulin is It is a kind of known to reduce blood glucose target drug, it must parenteral administration, could work in human body；In general, to glycosuria The most common mode that patient applies human insulin is to pass through subcutaneous injection.The syringe used is subcutaneously injected at present, into When row injection operation, if the push rod at push end is stopped releasing medicament by larger resistance, and passed with the adjusting of push rod rotation connection Dynamic set will continue to release, and will cause the pharmaceutical quantities actually released and is not inconsistent with preset pharmaceutical quantities, i.e., the pharmaceutical quantities actually released are small In preset pharmaceutical quantities, therapeutic effect is impacted.

Utility model content

In order to solve the above technical problems, the utility model embodiment provides a kind of driving means and has the driving means Syringe.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

The utility model embodiment provides a kind of driving means, and the driving means includes shell, calibration loop, adjusts rotation Button adjusts drive sleeve, push rod, push button, lock piece and spline structure；Wherein:

One end of the shell is the push end of connection push container, and the other end is the adjustable side for adjusting push amount；

The scale ring outer surface is provided with push amount scale mark, and the calibration loop is mounted on the inner wall of the shell, And the calibration loop can be moved along axial relative to the shell；

The adjusting knob is mounted on the adjustable side of the shell, and is fixedly connected with the calibration loop, the calibration loop It is rotated with the rotation of the adjusting knob；

The adjusting drive sleeve is threaded through in the shell, and one end is connect with the adjusting knob, the adjusting drive sleeve It is rotated with the rotation of the adjusting knob；

One end of the push rod, which is threaded through, to be adjusted in drive sleeve, and the other end stretches out the push end of the shell, the push rod Outer circle and the adjusting drive sleeve be threadedly coupled；

The spline structure is mounted on the push end of the shell to limit the push rod rotation；

The push button is mounted on the adjustable side of the shell, the adjusting drive sleeve, the push rod and the scale Ring presses to the push end movement with pressing for the push button；

The lock piece is mounted on the adjustable side of the shell, and the lock piece connects the push button and the adjusting Drive sleeve, when pressing the push button, if the push rod is stopped, the lock piece limit mobile to the push end by external force It is mobile to the push end to make the adjusting drive sleeve.

In above scheme, it is described adjust drive sleeve one end be equipped with first end face tooth, the adjusting knob be equipped with it is described The second end face tooth that first end face tooth matches, the adjusting knob pass through the first end face tooth and the second end face tooth band Move the adjusting drive sleeve rotation；

Described one end for adjusting drive sleeve is additionally provided with third end-tooth, and the lock piece is equipped with and the third end-tooth phase Matched 4th end-tooth, the first end face tooth and the second end face tooth are detached from the pressing of the adjusting knob, institute It states push button and drives the adjusting drive sleeve to move to the push end by the third end-tooth and the 4th end-tooth It is dynamic.

In above scheme, the lock piece includes locking part and elastic portion, and the 4th end-tooth is arranged in the locking In portion, the elastic portion connects the locking part and the adjusting drive sleeve so that the third end-tooth and the 4th end face Tooth keeps non-engagement state when not pressing the push button.

In above scheme, the adjusting knob is equipped with inner hole, and the lock piece is mounted in the inner hole；

The push button includes cylinder and cap edge, and the cylinder can pass through the inner hole of adjusting knob, and with the lock Stop member contact, the diameter on the cap edge are greater than the inner hole of the adjusting knob.

In above scheme, the adjusting drive sleeve include make first end face tooth and second end face tooth the push button not The elastic component of meshing state is kept when depressed.

In above scheme, the adjusting drive sleeve further includes push rod nut and adjusting set, and the push rod nut is equipped with and institute State the internal screw thread of push rod cooperation；The adjusting set is set on the push rod nut, and the adjusting set can be along the push rod spiral shell Female axis is mobile, and is able to drive the push rod nut rotation；The adjusting set is arranged in the calibration loop, the adjusting set One end is equipped with the first end face tooth.

In above scheme, the inner wall of the adjusting set is equipped at least one first axially extending groove, the push rod spiral shell Mother is equipped with the first convex ribs corresponding with first groove；Or

The inner wall of the adjusting set is equipped at least one first axially extending convex ribs, and the push rod nut is equipped with and institute State corresponding first groove of the first convex ribs.

In above scheme, the driving means further includes adjusting stabilizing ring, and the adjusting stabilizing ring is set in the adjusting In drive sleeve, and the adjusting stabilizing ring and the adjusting drive sleeve axial restraint；The outer surface for adjusting stabilizing ring and institute State the inner thread connection of shell；The adjusting stabilizing ring is rotated with the rotation of the calibration loop.

In above scheme, the outer surface of the calibration loop is connect with the inner thread of the shell.

In above scheme, the shell includes cylindrical case and the combination function ring for being fixed on the outer casing inner wall, described Combination function is equipped with the first internal screw thread and the second internal screw thread, and the calibration loop is equipped with to match with first internal screw thread First external screw thread；The adjusting stabilizing ring is equipped with the second external screw thread to match with second internal screw thread；

The first boss extended radially inwardly from the inner walls is additionally provided in the combination function ring, described first is convex The side of platform can limit the moving distance for adjusting and stablizing the circumferential adjustable side, and the other side of the first boss can Limit the moving distance at the circumferential push end of the scale.

In above scheme, the shell includes the second boss extended radially inwardly from the outer casing inner wall, and described second Boss is located at the push end, and described one end for adjusting stabilizing ring can abut the second boss, the adjusting stabilizing ring The other end protrudes into the calibration loop.

In above scheme, the shell is located at the push end and is additionally provided with cricoid barrier structure, the barrier structure Inner wall is equipped with several axially extending tooth sockets, several described tooth sockets are arranged along the circumferential uniform intervals of the barrier structure；

It is described adjust drive sleeve and be located at the one end at the push end be equipped at least one flexible feet, on the flexible feet Equipped with the teeth to match with the tooth socket.

In above scheme, the barrier structure is located at the push end and is additionally provided with from the barrier structure inner wall radially-inwardly One end of the third boss of extension, the push rod nut can be abutted with the third boss.

In above scheme, the circumference of the push rod is equipped with flank and at least one penetrates through the push rod whole length Flat gesture face, the flank are threadedly coupled with the adjusting drive sleeve, the spline structure be axially arranged with cross sectional shape with The rotation stop hole that the flat gesture face matches.

In above scheme, the spline structure and the shell are monolithic construction or the spline structure and the shell Body is mutually independent split type structure.

The utility model embodiment provides a kind of syringe, and the syringe includes push container and any of the above item institute The driving means stated, the push container installation is on the housing.

The utility model embodiment provides a kind of driving means and the syringe with the driving means, when rotation is adjusted When knob, adjusting knob can drive calibration loop to rotate, and the scale on calibration loop is used to show the pharmaceutical quantities that driving means is drawn；Turn When dynamic adjusting knob adjusts push dosage, calibration loop, adjusting drive sleeve and lock piece are mobile from push end to adjustable side.When pressing When pressure push button, push button can push adjusting drive sleeve, push rod and scale circumferential direction push end mobile, after medicament has pushed, Calibration loop zero.If during push, push rod is stopped by external force to the movement of push end, and lock piece can limit adjusting drive sleeve Mobile to push end, the synchronizing moving for realizing the adjusting drive sleeve of push rod stops with synchronous, ensure that the accurate of push dosage Property.

Detailed description of the invention

Fig. 1 is the cross-sectional view of driving means one optional package assembly in the utility model embodiment；

Fig. 2 is that driving means is when adjusting push dosage in Fig. 1, the optional structural schematic diagram in adjustable side one；

Fig. 3 is one optional structural schematic diagram of calibration loop in Fig. 1；

Fig. 4 is the axial sectional view of calibration loop in Fig. 3；

Fig. 5 is one optional schematic perspective view of adjusting knob in Fig. 1；

Fig. 6 is the structural schematic diagram of one end face of adjusting knob in Fig. 5；

Fig. 7 is the structural schematic diagram of another end face of adjusting knob in Fig. 5；

Fig. 8 is one optional structural schematic diagram of adjusting set in Fig. 1；

Fig. 9 is one optional structural schematic diagram of push rod nut in Fig. 1；

Figure 10 is that one optional structural schematic diagram of stabilizing ring is adjusted in Fig. 1；

Figure 11 is the side view that stabilizing ring is adjusted in Figure 10；

Figure 12 be Figure 11 in A-A to cross-sectional view；

Figure 13 is one optional structural schematic diagram of rotation prevention portion in Fig. 1；

Figure 14 is the sectional view that button axial direction is pushed in Fig. 1；

Figure 15 is an optional structural schematic diagram of shell in Fig. 1；

Figure 16 is the axial sectional view of Figure 14；

Figure 17 is an optional structural schematic diagram of push rod in Fig. 1；

Figure 18 is one optional structural schematic diagram of spline structure in Fig. 1.

Appended drawing reference: shell 100；First ring 110；First boss 111；Reset rotation stop set 120；Rotation stop hole 121；Second ring 130；Second boss 140；Lid 150；Form 160；Barrier structure 170；Tooth socket 171；Third boss 180；Adjusting knob 200； Second end face tooth 210；Through slot 220；Annular knurl 230；Inner hole 240；Push button 300；Lock piece 400；Locking part 410；4th end Face tooth 411；Claw 412；Rotation stop groove 413；Elastic portion 420；Adjust drive sleeve 500；Adjusting set 510；First end face tooth 511；The Three end-tooths 512；Salient point 513；Push rod nut 520；First convex ribs 521；Defining flange 522；Flexible feet 523；Teeth 524； Elastic component 530；Slider 540；Push rod 600；Flat gesture face 610；Flank 620；Adjust stabilizing ring 700；First chamber 710；Second Chamber 720；Second external screw thread 730；Bad stage portion 740 is stablized in adjusting；Second convex ribs 750；Position-limited claw 760；Calibration loop 800；The One external screw thread 810；Graduation mark 820；Zero graduation line 821；Second groove 830；Elastic projection 840；Push container 900；Medicament Bottle 910；Medicament storehouse 920；Medicine bottle stopper 930.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer The technical solution of the utility model embodiment is clearly and completely described in the attached drawing of type embodiment.Obviously, described Embodiment is a part of the embodiment of the utility model, rather than whole embodiments.Reality based on described the utility model Example is applied, those skilled in the art's every other embodiment obtained belongs to scope of protection of the utility model.

The driving means of the utility model embodiment is used to push liquid preparation to diabetic or other patients, this When, push operation, that is, pointed injection operation.But those skilled in the art can understand, can be used for it is other need quantitatively to push it is other The occasion of material.

The driving means of the utility model embodiment needs and push container 900 is used cooperatively, when for pushing medicament, two Person can be combined into syringe, and the utility model embodiment is described in detail driving means by taking syringe as an example, wherein infusing The course of work of emitter includes at least installation push container 900, adjusts push dosage and push, and simple in order to state, this is practical The direction of new embodiment as shown in Figure 1 describes driving means and its components, i.e., top, lower section refer both to the top in Fig. 1 The lower section and.Specific working principle is as follows:

1) installation push container 900, push container 900 are connected with the end of push rod 600, and specifically, push container 900 can To be medicament cartridge, medicament cartridge includes flask for medicinal preparations 910 and medicament storehouse 920, and flask for medicinal preparations 910 is mounted in medicament storehouse 920.It is described to push away Send container 900 can be integrated, i.e., medicament storehouse 920 and flask for medicinal preparations 910 are integrated, it is directly installed on shell, Push container 900 can be mounted on shell by the mode well known to those skilled in the art such as clamping or screw thread company.It has pushed It directly abandons, is disposable；It is also possible to fission, i.e., first loads onto medicament storehouse 920, be loaded on flask for medicinal preparations 910, push rod 600 It can extend into inside flask for medicinal preparations 910 and push, pushed, abandon flask for medicinal preparations 910, medicament storehouse 920 can recycle；

2) push dosage is adjusted, adjusting knob 200 is rotated, makes adjustable side spiral of the adjusting knob 200 to shell, is adjusted The rotation for saving knob 200 will drive and adjust the rotation of drive sleeve 500, be screw thread company due to adjusting drive sleeve 500 and push rod 600 It connects, but the rotation of push rod 600 is limited by spline structure, and the medicine bottle stopper of flask for medicinal preparations 910 has been withstood on the head of push rod 600 930, resistance is larger, and push rod 600 is powerless to be moved axially to the adjustable side of shell, it may be assumed that can not rotate, is powerless mobile, so adjusting Drive sleeve 500 can be to the adjusting extreme direction spiral of shell, and adjusting drive sleeve 500 in this way can be because spiral be with respect to shell production Raw a certain distance D, referring to fig. 2 in distance D, this distance D determines the push dosage of adjusting；Meanwhile adjusting knob 200 Be fixedly connected with calibration loop 800, thus calibration loop 800 also can spiral, calibration loop 800 mobile distance and adjusting The mobile distance of drive sleeve 500 has certain proportionate relationship, and the outer wall of calibration loop 800 is provided with push object scale mark, this Sample passes through the form 160 that shell is arranged in, and just can know that push amount；

In order to keep push amount more accurate, the screw pitch of the screw thread between calibration loop 800 and shell is greater than the adjusting drive sleeve The moving distance for adjusting drive sleeve 500 can thus be passed through calibration loop by the screw pitch of the screw thread between 500 and the push rod 600 800 amplifications, push amount scale mark are more accurate；In order to adjust drive sleeve 500 adjust stop after, i.e., adjusting knob 200, adjust After drive sleeve 500 and calibration loop 800 stop operating, adjusting drive sleeve 500 will not slide downwards under the effect of gravity, adjust and pass The gap of the threaded connection of dynamic set 500 and push rod 600 is that have a certain range of, if gap is excessive, is easy to happen free skating It moves；

3) push, press push button 300, push button 300 can by lock piece 400 push adjust drive sleeve 500 to The push end of shell is mobile, adjusts drive sleeve 500 and push rod 600 is threadedly coupled, also just will push the movement of push rod 600, until adjusting Shell is withstood in the one end at section drive sleeve 500 towards shell push end, completes the push of setting pharmaceutical quantities；Button 300 is pushed simultaneously When moving down also can squeeze adjustments knob 200, and then calibration loop 800 is driven to make spiral decline, scale zero.

The utility model embodiment is mainly used for diabetic, but those skilled in the art can understand, can be used for Other patients, this will not be repeated here.

Driving means provided by the embodiment of the utility model includes shell, calibration loop 800, adjusting knob 200, adjusts transmission Set 500, push rod 600, push button 300 and lock piece 400；Wherein: one end of shell is the push of connection push container 900 End, the other end are the adjustable side for adjusting push dosage；800 outer surface of calibration loop is provided with push amount scale mark, calibration loop 800 It is mounted on the inner wall of shell, and calibration loop 800 can move, specifically, calibration loop 800 and inner walls relative to shell along axial Connection type include but is not limited to be threadedly coupled；Adjusting knob 200 is mounted on the adjustable side of shell, and solid with calibration loop 800 Fixed connection, calibration loop 800 are rotated with the rotation of adjusting knob 200；It adjusts drive sleeve 500 to be threaded through in shell, one end and tune It saves knob 200 to connect, adjusts drive sleeve 500 and rotated with the rotation of adjusting knob 200；One end of push rod 600 is threaded through adjusting In drive sleeve 500, the other end stretches out the push end of shell, and the outer circle and adjusting drive sleeve 500 of push rod 600 are to be threadedly coupled；Only The push end of shell is arranged in limit the rotation of push rod 600 in rotation structure；Push button 300 is mounted on the adjustable side of shell, adjusts Drive sleeve 500, push rod 600 and calibration loop 800 press to the movement of push end with pressing for push button 300；Lock piece 400 is mounted on shell The adjustable side of body, the connection of lock piece 400 push button 300 and adjusting drive sleeve 500, when pressing push button 300, if push rod 600 are stopped by external force to the movement of push end, and it is mobile to push end that the limitation of lock piece 400 adjusts drive sleeve 500.

As shown in Figure 1, the push end of shell is equipped with push container 900, pushes and be equipped with outside container 900 removably Lid 150.Pushing container 900 includes flask for medicinal preparations 910, medicament storehouse 920 and medicine bottle stopper 930, medicine bottle stopper 930 and the one of push rod 600 End is connected.The adjustable side installation and adjustment knob 200 of shell, adjusting knob 200 is fixedly connected with calibration loop 800, calibration loop 800 with Inner walls are threadedly coupled, and when adjusting push dosage, rotation of adjustment knob 200, adjusting knob 200 can be with calibration loop 800 It is rotating movement upwards together.The amount that calibration loop 800 rises represents the dosage adjusted, and the metering of adjusting on calibration loop 800 by setting Some graduation marks 820 indicate, and are shown by the form 160 that upper part of the housing is equipped with.Adjusting knob 200 can be with calibration loop 800 It is integrally formed, but in order to easy to assembly, calibration loop 800 and adjusting knob 200 are physically separable mutually independent component.

Calibration loop 800 can be connected by way of joggle with adjusting knob 200.Specifically, as shown in Figure 3 and Figure 6, it carves The zero graduation line 821 of ring 800 is spent in upper end.The upper end of calibration loop 800 is equipped with several axial elastic projections 840, adjusts Knob 200 is equipped with the through slot 220 of matching elastic projection 840.In the embodiment shown in the utility model, elastic projection 840 Shape is hook, totally three, is uniformly distributed axially；Corresponding, through slot 220 also is provided with three；Elastic projection 840 protrudes into After through slot 220, through slot 220 is just blocked in the upper end of elastic projection 840, completes to be fixedly connected；Further, the lower end of through slot 220 Equipped with the taper protruded into convenient for elastic projection 840.Be understood that when, elastic projection 840 and through slot 220 are not limited to above Structure.

The outside of calibration loop 800 is equipped with the first external screw thread 810, and enclosure interior is equipped with the first matched internal screw thread, such as Shown in Fig. 1 and Fig. 2, the first external screw thread 810 is thread groove, and the first internal screw thread is thread protrusion, in the first external screw thread 810 and first The tooth form of screw thread can be rectangle, trapezoidal, zigzag or other shapes.It is understood that in other embodiments, it can be First external screw thread 810 is thread protrusion, and the first internal screw thread is thread groove.As shown in figure 5, the outer surface of adjusting knob 200 is equipped with The type of annular knurl 230, annular knurl 230 can design as needed, be not construed as limiting.Annular knurl 230 can not only increase frictional force, be convenient for Rotation is adjusted, additionally it is possible to increase decoration sense.

Specifically, for the ease of processing, it is not integrally formed to adjust drive sleeve 500, but including 520 He of push rod nut Adjusting set 510, is shown in Fig. 8 and Fig. 9.Push rod nut 520 is equipped with the internal screw thread cooperated with push rod 600, and adjusting set 510 is set in push rod On nut 520, adjusting set 510 can be moved along the axis of push rod nut 520, and be able to drive the rotation of push rod nut 520.

Specifically, adjusting set 510 is set in the top of push rod nut 520, and the inner wall of adjusting set 510 is equipped at least one axis To the first groove of extension, push rod nut 520 is equipped with the first convex ribs 521 corresponding with the first groove.Pass through the first convex ribs 521 Torque is transmitted in cooperation with the first groove, while realizing the effect that adjusting set 510 drives push rod nut 520 to rotate, without Influence the axial movement of adjusting set 510 and push rod nut 520 based on other side.

The quantity that the first groove and the first convex ribs 521 are used in embodiment shown in the utility model is four flowers Key, transmitting torque in this way is steady, and processes also relatively convenient.It is understood that the quantity of groove and convex ribs can shape not It is limited to the form shown in the present embodiment；In other embodiments, it can also be that the inner wall of adjusting set 510 is equipped at least one axial direction The first convex ribs extended, push rod nut 520 are equipped with the first groove corresponding with the first convex ribs.

As shown in Fig. 5 to Fig. 8, one end of adjusting set 510 is equipped with first end face tooth 511, and adjusting knob 200 is equipped with and the The second end face tooth 210 that one end-tooth 511 matches, adjusting knob 200 pass through the first end face tooth 511 and second end face tooth 210 drive adjusting drive sleeve 500 to rotate.

The setting of first end face tooth 511 is equipped with and first end face tooth 511 in 510 periphery of adjusting set, the inside of adjusting knob 200 The second end face tooth 210 of engagement, second end face tooth 210 are continuously arranged in the inside of adjusting knob 200,511 He of first end face tooth Second end face tooth 210 remains meshing state when not pressing push button 300.

As shown in Figure 1, adjusting transmission to make first end face tooth 511 and second end face tooth 210 keep normal meshing state Set 500, which is equipped with, makes first end face tooth 511 and second end face tooth 210 keep the elastic component 530 of meshing state；Specifically, elastic component 530 can be compressed spring, the precompression design that line footpath, pitch of compressed spring etc. can according to need, in this way, can obtain Relatively accurate precompressed force value.

Specifically, elastic component 530 is located at 510 lower end of adjusting set, and is set on push rod nut 520, it should be noted that The position that elastic component 530 is only symbolically shown in Fig. 1 does not represent the practical connection relationship of elastic component 530.Further, Slider 540 is arranged in the lower end of adjusting set 510, and slider 540 is set in push rod nut 520, and elastic component 530 is located at slider 540 lower section, and abutted in slider 540, the lower end of adjusting set 510 is equipped with multiple salient points 513, salient point 513 and slider 540 Point contact.This connection type can reduce the frictional force between adjusting set 510 and elastic component 530, make adjusting set 510 along axial direction Movement it is more flexible.

When adjusting push dosage, adjusting knob 200 is rotated, adjusting set is driven by first end face tooth 511 and second end face 510 rotations, adjusting set 510 drives push rod nut 520 to rotate by the cooperation of the first groove and the first convex ribs 521 again, due to pushing away Stem nut 520 is threadedly coupled with push rod 600, and when adjusting push dosage, push rod 600 is prevented to rotate by spline structure, push rod 600 keep zero-bit motionless, and push rod nut 520 is with respect to the upward moving in rotation of push rod 600.

Adjusting drive sleeve 500, which is arranged to 510 two parts of push rod nut 520 and adjusting set, will cause such a ask Topic stops " adjust push amount " and during push, the axial position of push rod nut 520 is free, if its with push away If the fit clearance of threaded connection between bar 600 is bigger, it is possible to can be under self gravitation effect or in other situations Additional axial sliding is generated, the consequence of push amount inaccuracy will be brought in this way；In order to avoid such case, the utility model is real The driving means for applying example, which is additionally provided with, adjusts stabilizing ring 700；It adjusts stabilizing ring 700 to be set on push rod nut 520, adjusts stabilizing ring 700 structure and shape is as shown in Figure 10 to Figure 12.

Specifically, it adjusts stabilizing ring 700 to be set in adjusting drive sleeve 500, and adjusts stabilizing ring 700 and adjust drive sleeve 500 axial restraints；The inner thread of the outer surface and shell that adjust stabilizing ring 700 connects；Stabilizing ring 700 is adjusted with calibration loop 800 rotation and rotate.More specifically, adjust 700 outer surface of stabilizing ring be equipped with the second external screw thread 730, inner walls it is corresponding The second internal screw thread is equipped at position, the sliding of such push rod nut 520 is not only threadedly coupled between push rod 600 by its own Limitation, be also regulated the limitation of the threaded connection between stabilizing ring 700 and shell, further limit push rod nut 520 Axial sliding.

As shown in Figure 10 to Figure 12, stabilizing ring 700 is adjusted along being axially arranged with coaxial and connection the first chamber 710 and second Chamber 720, the internal diameter of the first chamber 710 are greater than the internal diameter of the second chamber 720, and the outside of the first chamber 710 is arranged in the second external screw thread 730. Adjusting stabilizing ring 700 can partially protrude into calibration loop 800, and specifically, the second chamber 720 is extending at least partially into calibration loop 800, and The second convex ribs 750 are equipped on the outside of second chamber 720, calibration loop 800 is equipped with the second groove 830 to match with the second convex ribs 750, the Two convex ribs 750 and the second groove 830 cooperate to transmit torque, thus, the rotation of calibration loop 800, which is able to drive, adjusts stabilizing ring 700 Rotation.

In the embodiment shown in the utility model, the junction of the first chamber 710 and the second chamber 720 forms stage portion 740, The position-limited claw 760 extended from stage portion 740 to push end is equipped in first chamber 710,520 corresponding position of push rod nut sets ring-type There is defining flange 522, position-limited claw 760 is connected to the lower circumferential surface of defining flange 522, and stage portion 740 abuts defining flange 522 Upper circumferential surface, it is shown in Figure 1.Therefore the axial restraint of stabilizing ring 700 and push rod nut 520, i.e. adjusting 700 He of stabilizing ring are adjusted Push rod nut 520 only circumferentially relatively rotates relatively, cannot move axially relatively.

In the unshowned embodiment of the utility model, adjusting stabilizing ring 700 can also be by following with push rod nut 520 Mode is fixed, it may be assumed that adjusts the elastic flange that 700 inner wall of stabilizing ring is equipped with annular, 520 outer round surface of push rod nut is equipped with and institute State the matched ring-shaped groove of elastic flange；Ring-shaped groove and elastic flange are smaller to guarantee mutual axis in axial gap To fixation.

As shown in Fig. 1, Fig. 8 and Figure 13, one end of adjusting set 510 is additionally provided with third end-tooth 512, and lock piece 400 is equipped with The 4th end-tooth 411 to match with third end-tooth 512, first end face tooth 511 and second end face tooth 210 are with push button 300 pressing and be detached from, push button 300 is driven by third end-tooth 512 and the 4th end-tooth 411 and adjusts drive sleeve 500 It is mobile to push end.

Third end-tooth 512 is located at the inside of first end face tooth 511, and the two is coaxial.Third end-tooth 512 and the 4th end Face tooth 411 can only be engaged when pressing adjusting knob 200, and be nibbled in third end-tooth 512 and the 4th end-tooth 411 When conjunction, first end face tooth 511 and second end face tooth 210 can be detached from, to make to adjust two processes of push dosage and push mutually not Interference.

Specifically, lock piece 400 includes rotation prevention portion and elastic portion 420, and the 4th end-tooth 411 is arranged on rotation prevention portion, bullet Property portion 420 connect rotation prevention portion and adjust drive sleeve 500 so that third end-tooth 512 and the 4th end-tooth 411 are not pressing push Non-engagement state is kept when button 300.

As shown in Fig. 1 and Figure 13, adjusting knob 200 is equipped with perforative inner hole 240, and inner hole 240 is located at center position, only Transfer part and elastic portion 420 are respectively positioned in inner hole 240.Wherein, the lower end setting of locking part 410 matches with third end-tooth 512 The 4th end-tooth 411, the upper end of locking part 410 is fixedly connected with push button 300.

Specifically, as shown in Figure 13 and Figure 14, the upper end setting rotation stop groove 413 and claw 412 of locking part 410, push is pressed Button 300 is equipped with to be protruded into only with the matched rotation stop projection of the rotation stop groove 413 and the circumference platform being connected with claw 412, rotation stop projection In turn trough 413, rotation stop projection and rotation stop groove 413 can be rectangle, to prevent lock piece 400 from rotating relative to push button 300. Claw 412 is connected on circumference platform and is defined with the position upward to push button 300, and push button 300 and locking are avoided Part 400 is detached from, i.e. push button 300 can not be extracted from lock piece 400 upwards.The lower end of locking part 410 is equipped with accommodating chamber, 4th end-tooth 411 is uniformly arranged along the periphery of accommodating chamber, and accommodating chamber and rotation stop groove 413 are coaxial, 420 one end of elastic portion and tune Section set 510 abuts, and the other end is abutted with the roof of accommodating chamber, and elastic portion 420 makes third end-tooth 512 and the 4th end-tooth 411 State is remained disengaged from, when pressing pushes button 300, the two can just be engaged.

As shown in Fig. 1 and Figure 14, push button 300 includes cylinder and cap edge, and cylinder can pass through the interior of adjusting knob 200 Hole 240, and contacted with lock piece 400, the diameter on cap edge is greater than the inner hole 240 of adjusting knob 200.The top on cap edge is equipped with anti-skidding Line, anti-skid chequer it is various informative, can be set as needed, anti-skid chequer not only can with increasing friction force, but also have decorative effect.Push The cylinder of button 300 is downwardly open tubular, and rotation stop projection is arranged in cylinder, therefore, when pressing pushes button 300, is pushed away Send button 300 that can oppress adjusting knob 200, adjusting knob 200 rotatably drives calibration loop 800 to be zeroed, and push button 300 passes through Lock piece 400 drives adjusting 500 straight line of drive sleeve to move down, and is threadedly coupled, adjusts with push rod 600 due to adjusting drive sleeve 500 Section 500 straight line of drive sleeve will drive 600 straight line of push rod while moving down and move down, and then complete push.If pushing In the process, for push rod 600 by the larger stopping push of resistance, the source of this resistance includes but is not limited to be connected with push rod 600 It is larger for pushing resistance between the medicine bottle stopper 930 of medicament and medicine bottle.Due to the second end face tooth 210 and tune of adjusting knob 200 The first end face tooth 511 of section set 510 is detached from, and pushes the 4th end-tooth 411 of button 300 and the third end-tooth of adjusting set 510 512 engagements, adjusting set 510 can only move, can not rotate, and push rod nut 520 can not also rotate, due to push rod nut 520 with push away Bar 600 is threadedly coupled, and push rod 600 is motionless, and push rod nut 520 is also motionless, carry out push process can not, once i.e. push rod 600 stop push, adjust drive sleeve 500 and also stop push, to ensure that the accuracy of push dosage.

As shown in Figure 1, shell includes cylindrical case 100 and is fixed on 100 inner wall of shell for the ease of manufacturing and assembling Combination function ring, above-mentioned first internal screw thread and the second internal screw thread are arranged in combination function ring, also set in combination function ring There is the first boss 111 extended radially inwardly from inner walls, the side of first boss 111, which can limit, adjusts stabilizing ring 700 To the moving distance of adjustable side, the other side of first boss 111 can limit calibration loop 800 to it is described push end movement away from From.

Combination function ring can be physically inseparable component, can also be divided into two components, specifically, combine function Energy ring includes the first ring 110 and the second ring 130, and the first internal screw thread is arranged as shown in Figure 1, being located in the first ring 110 of upper end, The second internal screw thread is equipped in the second ring 130 of lower end, the junction of the first ring 110 and the second ring 130 is equipped with first boss 111.Since the axial internal diameter of calibration loop 800 changes, it is also formed with stage portion, the stepped portions of calibration loop 800 are in first boss 111 top, the movement downward to calibration loop 800 of first boss 111 are limited to the movement at push end, adjust and stablize Ring 700 is located at 111 lower section of first boss, and 111 pairs of first boss adjust the upward movement of stabilizing ring 700, passes through first boss 111 It defines and adjusts the downward maximum distance of stabilizing ring 700 upward maximum distance and calibration loop 800.It further, can also be right The upward mobile setting position limiting structure of calibration loop 800.

As shown in Fig. 1, Figure 15 and Figure 16, shell includes the second boss 140 extended radially inwardly from 100 inner wall of shell, The second boss 140 is located at the push end, and the one end for adjusting stabilizing ring 700 can abut the second boss 140.Second 140 pairs of boss adjust the downward displacement of stabilizing ring 700 and play position-limiting action.Second boss 140 can shape in this way At: bottom-up flange is formed inside 100 lower end of shell.

In embodiment shown in the utility model, shell 100 is located at push end and is additionally provided with cricoid barrier structure 170, hinders The inner wall for keeping off structure 170 is equipped with several axially extending tooth sockets 171, week of several tooth sockets 171 along the barrier structure 170 It is arranged to uniform intervals；It adjusts drive sleeve 500 and is located at the one end at push end equipped at least one flexible feet 523, flexible feet 523 are equipped with the teeth 524 to match with tooth socket 171.

Such as Fig. 8, Figure 15, Figure 16 and shown, the lower end of push rod nut 520 circumferentially arranged with two arc elastic stabilizer blades 523, A teeth 524 are all provided on each flexible feet 523, teeth 524 are matched with tooth socket 171, and such structure is more preferable in addition to energy Guarantee push rod nut 520 it is radial not have a shaking outer, also adjust push dosage when, apparent interval can be brought to turn to patient Dynamic feeling adjusts one section of preset dosage, has the feeling of click on hand, and can make a sound, seeing not convenient for patient It is operated in the case where clear push amount scale mark, because the eyesight of many diabetics has very big decline；And Axial movement when such structure will not be to push generates obstruction, guarantees the normal shifting for adjusting drive sleeve 500 and push rod 600 It is dynamic.

It should be noted that barrier structure 170 can be with the separable individual components of shell 100, can also be with shell 100 are integrally formed, and the utility model embodiment shows that barrier structure 170 and shell 100 are integrally formed, and is located at shell 100 inside.

As shown in Figure 15 and Figure 16, barrier structure 170 is located at push end and is additionally provided with from 170 inner wall of barrier structure radially-inwardly One end of the third boss 180 of extension, push rod nut 520 can be abutted with third boss 180.Third boss 180 is to push rod spiral shell Female 520 downward displacements are limited.Third boss 180 can be to be formed by the diameter change of barrier structure 170, specifically, It is partially relatively large in diameter on barrier structure 170, lower section diameter is smaller, and third boss 180 is formed at diameter change.

As shown in figure 17, the circumference of push rod 600 is equipped with flank 620 and at least one penetrates through the push rod 600 entirely The flat gesture face 610 of length, flank 620 are threadedly coupled with the adjusting drive sleeve 500, spline structure be axially arranged with and section The rotation stop hole 121 that shape and the flat gesture face 610 match.

As shown in figure 18, spline structure can be the set of the reset rotation stop with reset function 120, i.e. reset rotation stop set 120 It is physically separable individual components with shell, the cross-sectional shape and push rod 600 in rotation stop hole 121 are adapted, as long as in this way It resets rotation stop set 120 not rotate, push rod 600 cannot just rotate.Specifically, the drug for pushing container 900 has pushed, disassembly push Container 900 unclamps and resets rotation stop set 120, can be manually rotated and resets rotation stop set 120, and then push rod 600 is driven to rotate, makes push rod 600 It is mobile to the adjustable side of shell, return to the position before not pushing, stop bit part can be generally set, push rod 600 returns to do not push before Position just stop, can not rotate or move.Since with reset function, this driving means is reusable.

In addition, spline structure can also only have the spline structure of anti-600 rotation function of throw-out lever, specifically, this rotation stop Structure and shell 100 are monolithic construction, such as spline structure and shell 100 are integrally formed, and spline structure and shell 100 are fixed Connection, push rod 600 pass through the rotation stop hole 121 of spline structure, and after push, push rod 600 can not reset, and this driving means is Disposable driving means.

To those skilled in the art according to the other structures of the driving means of the utility model embodiment and operation All it is to be understood that and easy to accomplish, therefore is not described in detail.

The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model Range.

Claims (16)

1. a kind of driving means, which is characterized in that the driving means includes shell, calibration loop, adjusting knob, adjusts transmission Set, push rod, push button, lock piece and spline structure；Wherein:

One end of the shell is the push end of connection push container, and the other end is the adjustable side for adjusting push amount；

The scale ring outer surface is provided with push amount scale mark, and the calibration loop is mounted on the inner wall of the shell, and institute Stating calibration loop can move along axial relative to the shell；

The adjusting knob is mounted on the adjustable side of the shell, and is fixedly connected with the calibration loop, and the calibration loop is with institute It states the rotation of adjusting knob and rotates；

The adjusting drive sleeve is threaded through in the shell, and one end is connect with the adjusting knob, and the adjusting drive sleeve is with institute It states the rotation of adjusting knob and rotates；

One end of the push rod, which is threaded through, to be adjusted in drive sleeve, and the other end stretches out the push end of the shell, the push rod it is outer The round and adjusting drive sleeve is to be threadedly coupled；

The spline structure is mounted on the push end of the shell to limit the push rod rotation；

The push button is mounted on the adjustable side of the shell, the adjusting drive sleeve, the push rod and the calibration loop with Pressing for the push button presses to the push end movement；

The lock piece is mounted on the adjustable side of the shell, and the lock piece connects the push button and adjusting transmission Set, when pressing the push button, if the push rod is stopped, lock piece limitation institute mobile to the push end by external force It states and adjusts drive sleeve to push end movement.

2. driving means according to claim 1, which is characterized in that described one end for adjusting drive sleeve is equipped with first end face Tooth, the adjusting knob are equipped with the second end face tooth that matches with the first end face tooth, and the adjusting knob passes through described the One end-tooth and the second end face tooth drive the adjusting drive sleeve rotation；

Described one end for adjusting drive sleeve is additionally provided with third end-tooth, and the lock piece is equipped with to match with the third end-tooth The 4th end-tooth, the first end face tooth and the second end face tooth are detached from the pressing of the adjusting knob, described to push away Button is sent to drive the adjusting drive sleeve mobile to the push end by the third end-tooth and the 4th end-tooth.

3. driving means according to claim 2, which is characterized in that the lock piece includes locking part and elastic portion, institute It states the 4th end-tooth to be arranged in the locking part, the elastic portion connects the locking part and the adjusting drive sleeve so that institute It states third end-tooth and the 4th end-tooth keeps non-engagement state when not pressing the push button.

4. driving means according to claim 3, which is characterized in that the adjusting knob is equipped with inner hole, the lock piece It is mounted in the inner hole；

The push button includes cylinder and cap edge, and the cylinder can pass through the inner hole of adjusting knob, and with the lock piece Contact, the diameter on the cap edge are greater than the inner hole of the adjusting knob.

5. driving means according to claim 2, which is characterized in that the adjusting drive sleeve include make first end face tooth and Second end face tooth keeps the elastic component of meshing state when the push button is not affected by pressing.

6. driving means according to claim 5, which is characterized in that the adjusting drive sleeve further includes push rod nut and tune Section set, the push rod nut are equipped with the internal screw thread cooperated with the push rod；The adjusting set is set on the push rod nut, institute Stating adjusting set can move along the axis of the push rod nut, and be able to drive the push rod nut rotation；The adjusting is worn Set on the calibration loop, described adjusting set one end is equipped with the first end face tooth.

7. driving means according to claim 6, which is characterized in that the inner wall of the adjusting set is equipped at least one axial direction The first groove extended, the push rod nut are equipped with the first convex ribs corresponding with first groove；Or

The inner wall of the adjusting set is equipped at least one first axially extending convex ribs, and the push rod nut is equipped with and described the Corresponding first groove of one convex ribs.

8. driving means according to claim 6, which is characterized in that the driving means further includes adjusting stabilizing ring, institute It states adjusting stabilizing ring to be set in the adjusting drive sleeve, and the adjusting stabilizing ring and the adjusting drive sleeve axial restraint； The outer surface for adjusting stabilizing ring is connect with the inner thread of the shell；The stabilizing ring that adjusts is with the rotation of the calibration loop Then rotation.

9. driving means according to claim 8, which is characterized in that the outer surface of the calibration loop is interior with the shell Wall is threadedly coupled.

10. driving means according to claim 9, which is characterized in that the shell includes cylindrical case and is fixed on institute State the combination function ring of outer casing inner wall, the combination function is equipped with the first internal screw thread and the second internal screw thread, on the calibration loop Equipped with the first external screw thread to match with first internal screw thread；The adjusting stabilizing ring is equipped with and the second internal screw thread phase Matched second external screw thread；

The first boss extended radially inwardly from the inner walls is additionally provided in the combination function ring, the first boss Side can limit the moving distance for adjusting and stablizing the circumferential adjustable side, and the other side of the first boss can limit The moving distance at the circumferential push end of the scale.

11. driving means according to claim 10, which is characterized in that the shell includes radial from the outer casing inner wall The second boss to extend internally, the second boss are located at the push end, and described one end for adjusting stabilizing ring can abut institute Second boss is stated, the other end for adjusting stabilizing ring protrudes into the calibration loop.

12. driving means according to claim 11, which is characterized in that the shell is located at the push end and is additionally provided with ring The inner wall of the barrier structure of shape, the barrier structure is equipped with several axially extending tooth sockets, several described tooth sockets are described in The circumferential uniform intervals of barrier structure are arranged；

The drive sleeve that adjusts is located at described one end for pushing end equipped at least one flexible feet, and the flexible feet is equipped with The teeth to match with the tooth socket.

13. driving means according to claim 12, which is characterized in that the barrier structure is located at the push end and also sets There is the third boss extended radially inwardly from the barrier structure inner wall, one end of the push rod nut can be convex with the third Platform abuts.

14. driving means according to claim 1, which is characterized in that the circumference of the push rod is equipped with flank and extremely The flat gesture face of the few perforation push rod whole length, the flank is threadedly coupled with the adjusting drive sleeve, described to stop Rotation structure is axially arranged with the rotation stop hole to match with cross sectional shape and the flat gesture face.

15. driving means according to claim 14, which is characterized in that the spline structure is monoblock type with the shell Structure or the spline structure and the shell are mutually independent split type structure.

16. a kind of syringe, which is characterized in that the syringe includes described in push container and any one of claim 1 to 15 Driving means, push container installation is on the housing.