CN106620963A

CN106620963A - Push device

Info

Publication number: CN106620963A
Application number: CN201610942116.6A
Authority: CN
Inventors: 楚耀强; 林林; 刘鹏; 周伟; 周子航; 林奕航
Original assignee: Suzhou Hanerxi Medical Equipment Development Co Ltd
Current assignee: Kunshan Haerxi Medical Devices Co ltd
Priority date: 2016-11-01
Filing date: 2016-11-01
Publication date: 2017-05-10
Anticipated expiration: 2036-11-01
Also published as: CN106620963B

Abstract

The invention discloses a push device which comprises a shell, an adjusting transmission sleeve penetrating through the shell, an adjusting stabilizing ring sleeved with the adjusting transmission sleeve, a push rod with one end penetrating through the adjusting transmission sleeve, and a push button mounted at the adjusting end of the shell. A scale ring is mounted on the inner wall of the shell, and the outer surface of the scale ring and the inner wall of the shell are in threaded connection. An adjusting knob is arranged at one end of the shell and fixedly connected with the scale ring, and the scale ring rotates along with rotation of the adjusting knob. One end of the adjusting transmission sleeve is connected with the adjusting knob, and the adjusting transmission sleeve rotates along with rotation of the adjusting knob. The outer surface of the adjusting stabilizing ring is in threaded connection with the inner wall of the scale ring, and the adjusting stabilizing ring is fixedly connected with the adjusting transmission sleeve in the axial direction. The other end of the push rod stretches out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve. A rotating stop structure for limiting rotation of the push rod is arranged at the output end of the shell. When the push button is pressed, the adjusting transmission sleeve can be pushed to move towards the output end.

Description

A kind of pusher

Technical field

The present invention relates to medical instruments field, and in particular to a kind of pusher.

Background technology

For diabetic, its blood glucose target is critically important, needs timing to pay close attention to and record, and in order to subtract The fluctuation of few patient blood glucose's index, needs by medicine control.Human insulin is a kind of well known medicine for reducing blood glucose target Thing, it must parenteral administration, could work in human body.At present, the most normal of human insulin is applied to diabetic Square formula is by hypodermic injection；Hypodermic injection is used mostly the syringe of disposable or fixed dosage, but because patient needs The dosage to be injected depends on his blood glucose target, therefore has inconvenience in use.

Although also there is the injection device of energy regulating dosage in the market, there is a problem of cumbersome or high cost, If there can be a kind of easy to operate, low cost quantitative injection device, or quantitative pusher, just can solve this and ask Topic.

In addition, in the use of other on-liquid medicines, accurate quantification being also required to sometimes and being used, such as external-applied ointment, such as Fruit can have a kind of quantitative pusher, or dosed expelling device, can just meet such demand.

Therefore it provides a kind of can accurately adjust usage amount, easy to operate, low cost pusher, it is urgently to be resolved hurrily Problem.

The content of the invention

In view of this, the embodiment of the present invention is expected to provide a kind of pusher, can accurately adjust push thing usage amount, and makes With convenient, low cost.

To reach above-mentioned purpose, the technical scheme is that what is be achieved in that：

Embodiments provide a kind of pusher, including shell, calibration loop, adjusting knob, regulation drive sleeve, tune Section stabilizing ring, push rod and push button；Wherein,

One end of the shell is the output end that connection pushes thing 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 arranged on the inwall of the shell, And the outer surface of the calibration loop is connected with the inner thread of the shell；

The adjusting knob is arranged on the adjustable side of the shell, and is fixedly connected with the calibration loop, the calibration loop Rotate with the rotation of the adjusting knob；

The regulation drive sleeve wears in the housing, and one end is connected with the adjusting knob, the regulation drive sleeve Rotate with the rotation of the adjusting knob；

The regulation stabilizing ring is set in the regulation drive sleeve, and the regulation stabilizing ring and the regulation drive sleeve Axial restraint；The outer surface for adjusting stabilizing ring is connected with the inner thread of the calibration loop；

One end of the push rod is located in regulation drive sleeve, and the other end stretches out the output end of the shell, the push rod Outer surface and the regulation drive sleeve inwall for threaded connection；The output end of the shell is additionally provided with the restriction push rod and turns Dynamic spline structure；

Described to push the adjustable side that button is arranged on the shell, the lower end of the push button adjusts rotation through described Button, the regulation drive sleeve presses to output end movement with pressing for the push button.

Preferably, the regulation stabilizing ring is provided with and the outer casing inner wall circumference side towards one end of the shell output end To fixation, axially unfixed default fit structure.

Preferably, the stable ring outer surface of the regulation is provided with anti-rotation projection, and the shell is provided with and the anti-rotation projection With, the anti-rotation groove that axially extends.

Preferably, described to adjust the elastic flange that stabilizing ring inwall is provided with annular, the regulation drive sleeve outer surface is provided with The ring-shaped groove matched with the elastic flange.

Preferably, the output end of the shell is provided with the baffle ring of control push amount, and the baffle ring is fixed on the inside the shell The precalculated position of wall, the baffle ring is provided with diameter between the push rod outside diameter and adjusts between the maximum gauge of drive sleeve lower end Endoporus.

Preferably, described regulation drive sleeve one end is provided with outer cylinder gear, and the adjusting knob is provided with and the outside cylinder The inner circle gear of gear matches, the adjusting knob drives the regulation by the engagement of the outer cylinder gear and inner circle gear Drive sleeve is rotated.

Preferably, the regulation transmission is arranged with makes the outer cylinder gear and inner circle gear keep the elasticity of engagement Part.

Preferably, the regulation drive sleeve includes upper adjusting set and lower adjusting set；The upper regulation wears and is located at the quarter The inwall of degree ring, described upper adjusting set one end is provided with the outer cylinder gear；The lower regulation drive sleeve is provided with and the push rod The internal thread of cooperation, the lower regulation wears and is located in the upper adjusting set, the lower adjusting set turning with the upper adjusting set Move and rotate.

Preferably, the endoporus of the baffle ring is divided in the axial direction the first different cavity of diameter and the second cavity, and described The predetermined threshold value with diameter greater than the lower adjusting set lower end maximum gauge of one cavity, the diameter of second cavity is between described Between push rod outside diameter and regulation drive sleeve lower end maximum gauge.

Preferably, the lower adjusting set lower end is provided with and reduces the lower regulation and be enclosed within first cavity inside diameter to rocking Elastic construction.

Preferably, the lower adjusting set lower end outer round surface is provided with least two circumferentially equally distributed elastic bumps； The baffle ring endoporus inwall is provided with the spring groove matched with the elastic bumps.

Preferably, the push button includes cylinder and shade, and the shade is located at the top of the cylinder；The cylinder Through the adjusting knob endoporus and with it is described regulation drive sleeve end contact；The shade with diameter greater than the tune The endoporus of section knob.

Pusher provided in an embodiment of the present invention, including shell, one end of shell is the output that connection pushes thing container End, the other end is the adjustable side for adjusting push amount；The inwall of shell is provided with calibration loop, and scale ring outer surface is provided with push amount quarter Scale designation, and the outer surface of calibration loop is connected with the inner thread of shell；One end of shell is also equipped with adjusting knob, adjusts rotation Button is fixedly connected with calibration loop, when adjusting knob is rotated, calibration loop can be driven to rotate；The regulation transmission being located in shell Set, one end is connected with adjusting knob, when adjusting knob is rotated, regulation drive sleeve can be driven to rotate；It is set in regulation drive sleeve Regulation stabilizing ring, its outer surface is connected with the inner thread of calibration loop, and is fixedly connected in the axial direction with drive sleeve is adjusted；One End is located in the push rod adjusted in drive sleeve, and its other end stretches out the output end of shell, the outer surface and regulation drive sleeve of push rod Inwall for threaded connection；The output end of shell is additionally provided with and limits the spline structure that push rod is rotated；Installed in shell adjustable side Button is pushed, when pressing pushes button, regulation drive sleeve can be promoted to move to output end；It can be seen that, the embodiment of the present invention is pushed away Device is sent, by the regulation of adjusting knob, is driven and is adjusted drive sleeve, push rod and shell, the screw of calibration loop, and by adjusting Section stabilizing ring reduces the axial slip for adjusting drive sleeve, can accurately adjust push thing usage amount, easy to use, and all uses machine Tool structure, without using electronic control part, low cost.

Description of the drawings

Fig. 1 is the cross-sectional schematic of embodiment of the present invention pusher；

Fig. 2 is the profile schematic perspective view of embodiment of the present invention pusher；

Fig. 3 is the schematic diagram of the adjusting knob in embodiment of the present invention pusher；

Fig. 4 is the schematic diagram of the calibration loop in embodiment of the present invention pusher；

Fig. 5 is the schematic diagram of the upper adjusting set in embodiment of the present invention pusher；

Fig. 6 is the schematic diagram of the lower adjusting set in embodiment of the present invention pusher；

Fig. 7 is the schematic diagram of the push rod in embodiment of the present invention pusher；

Fig. 8 is the schematic diagram of the regulation stabilizing ring in embodiment of the present invention pusher；

Fig. 9 is the schematic diagram one of the combination function ring in embodiment of the present invention pusher；

Figure 10 is the schematic diagram two of the combination function ring in embodiment of the present invention pusher；

Figure 11 is the orthographic projection schematic diagram of the lower surface of the lower adjusting set in embodiment of the present invention pusher.

Specific embodiment

Pusher in the embodiment of the present invention, including shell, one end of shell is the output end that connection pushes thing container, The other end is the adjustable side for adjusting push amount；The inwall of shell is provided with calibration loop, and scale ring outer surface is provided with push amount scale Mark, and the outer surface of calibration loop is connected with the inner thread of shell；One end of shell is also equipped with adjusting knob, adjusting knob It is fixedly connected with calibration loop, when adjusting knob is rotated, calibration loop can be driven to rotate；The regulation drive sleeve being located in shell, One end is connected with adjusting knob, when adjusting knob is rotated, regulation drive sleeve can be driven to rotate；It is set in the tune for adjusting drive sleeve Section stabilizing ring, its outer surface is connected with the inner thread of calibration loop, and is fixedly connected in the axial direction with drive sleeve is adjusted；Wear one end The push rod adjusted in drive sleeve is located at, its other end stretches out the output end of shell, and the outer surface of push rod is interior with regulation drive sleeve Wall is threaded connection；The output end of shell is additionally provided with and limits the spline structure that push rod is rotated；Installed in the push of shell adjustable side Button, when pressing pushes button, can promote regulation drive sleeve to move to output end.

The course of work of the embodiment of the present invention includes installing push thing container, adjusts push amount, pushes and reset, specifically Operation principle is as follows：

1) install and push thing container, the push thing container can be split, i.e., first load onto material bin, be loaded on filling There is the bottle for material for pushing thing, pushed, abandon bottle for material, material bin can be recycled；Can also be one, i.e. material bin It is one with bottle for material, directly loads onto, pushed direct discarding, is disposable；Thing container is pushed from the defeated of shell Go out end to load, the rotation of push rod can be limited by the spline structure of shell after loading；

2) push amount is adjusted, rotates adjusting knob, make adjustable side spiral of the adjusting knob to shell, adjusting knob Rotate, regulation drive sleeve can be driven to rotate, due to adjusting drive sleeve with push rod to be threadedly coupled, but the rotation of push rod is by structure Limit, and the head of push rod has withstood the piston of bottle for material, resistance is larger, powerless to move axially to output end, i.e.,：Cannot turn Dynamic, powerless movement, so adjusting drive sleeve can so adjust drive sleeve towards shell to the regulation extreme direction spiral of shell One end of output end can produce a certain distance with the output end of shell with the spiral for adjusting drive sleeve, and this distance is determined Push amount is determined；Meanwhile, adjusting knob is fixedly connected with calibration loop, thus calibration loop also can spiral, calibration loop move Dynamic distance and the distance of regulation drive sleeve movement has certain proportionate relationship, and the outer wall of calibration loop is provided with push thing scale Mark, so by the reading window of shell, just can know that push amount；

In order that push amount is more accurate, the pitch of the screw thread of the calibration loop is more than the spiral shell of the screw thread of the regulation drive sleeve Away from, thus the displacement for adjusting drive sleeve can be amplified by calibration loop, push amount scale mark is more accurate；

In order to adjust drive sleeve after stopping is adjusted, i.e., after adjusting knob, regulation drive sleeve and calibration loop stop operating, adjust Section drive sleeve will not downward sliding under gravity because the gap for adjusting the threaded connection of drive sleeve and push rod is that have certain Scope, if gap is excessive, it is susceptible to free sliding；The regulation drive sleeve is arranged with regulation stabilizing ring, and described Adjust stabilizing ring and the regulation drive sleeve axial restraint；The inwall spiral shell of the outer surface and the calibration loop for adjusting stabilizing ring Line connects；The sliding of so regulation drive sleeve is not only threadedly coupled and push rod between by its own and is limited, also regulated The restriction of the threaded connection between stabilizing ring and calibration loop, prevents the axial slip for adjusting drive sleeve substantially；

3) push, press push button, pushing button can promote regulation drive sleeve to move to the output end of shell, adjust and pass Dynamic set and push rod threaded connection, will also promote push rod to move, and withstand towards one end of shell output end until adjusting drive sleeve Shell, completes the push for setting push amount；Push simultaneously button when moving down also can squeeze adjustments knob, and then drive and carve Degree ring makees spiral decline, scale zero.

Note：If the push thing of bottle for material has not been pushed, push rod can not be rotated, that is, push thing container can not Dismounting, can otherwise affect the accuracy of push amount.

4) reset, the push thing of bottle for material has been pushed, dismounting pushes thing container, the rotation for releasing push rod is limited, manually rotation Turn push rod, push rod is moved to the adjustable side of shell, return to the position before not pushing；

In addition, in order to ensure that on the market most of bottle for material can have been pushed, push rod needs the long enough of design, so Can consider that adjusting transmission is cased with enough cavitys during design, to accommodate push rod.

The embodiment of the present invention is mainly used in diabetic or other patients push liquid preparation, but those skilled in the art Member is understood that can be used for other needs quantitatively to push the occasion of other materials, will not be described here.

The present invention is done and is further illustrated below according to Figure of description and specific Application Example.

Simple in order to state, describing pusher and its parts, i.e., top, lower section refer both to for direction as shown in Figure 1 Above and below in Fig. 1.

With reference to shown in Fig. 1-4, a kind of pusher, including shell 1, the lower end of the shell 1 pushes thing container for connection Output end, upper end be adjust push amount adjustable side；The inwall of the shell 1 is provided with calibration loop 2, the appearance of the calibration loop 2 Face is provided with push thing scale mark (not shown), and the inner thread of the outer surface of the calibration loop 2 and the shell 1 Connection, the i.e. outer surface of calibration loop 2 is provided with the first external screw thread 21, and the inwall of shell 1 is provided with the first internal thread；

Further, the thread type of the internal thread of first external screw thread 21 and first is motion thread, i.e., tooth form is square It is shape, trapezoidal or zigzag；Due to not stressing substantially, preferred rectangle, such transmission efficiency, frictional force are little.

The adjustable side of the shell 1 is provided with adjusting knob 3, and the adjusting knob 3 is fixedly connected with the calibration loop 2, When the adjusting knob 3 is rotated, the calibration loop 2 can be driven to rotate；As shown in Figure 3, Figure 4, the adjusting knob 3 with it is described Calibration loop 2 is fixed together by a kind of joinery and its construction；

Specifically, the upper end of the calibration loop 2 is provided with axial elastic projection 22, and it is described that the adjusting knob 3 is provided with matching The groove 31 of elastic projection 22；Wherein, the elastic projection 22 is shaped as T-shaped, and two is one group, totally three groups, axially Even distribution；Corresponding, the groove 31 also is provided with three；The elastic projection 22 is stretched into after the groove 31, the bullet Groove 31 is just blocked in the upper end of property projection 22, completes to be fixedly connected；Further, the lower end of the groove 31 be provided be easy to it is described The taper that elastic projection 22 is stretched into；

It is elastic big that the elastic projection 22 sets the purpose of two elastic projections 22 per group, is easy to assembling.

The output end of the shell 1 is provided with for installing the second external screw thread 12 for pushing thing container, for simplicity of expression, The push thing container is not shown.

The outer surface of the adjusting knob 3 is provided with the annular knurl 32 for increasing frictional force, and the type of annular knurl has a lot, do not limit It is fixed.

As shown in Fig. 2 the surface of the shell 1 is provided with reading window 11, it can be seen that the push thing of the outer surface of calibration loop 2 Scale mark, the push thing scale mark is arranged by helix, and from top to bottom, is stepped up scale value.

As shown in figure 1, being provided with regulation drive sleeve in the inner chamber of the shell 1, the regulation is driven set upper side and the tune Section knob 3 connects, and when the adjusting knob 3 is rotated, the regulation drive sleeve can be driven to rotate.

For the ease of processing and avoiding the interference of " regulation push amount " and " push " two interproceduals, the regulation drive sleeve It is not integrally formed, but including upper adjusting set 41 and lower adjusting set 42, see Fig. 5 and Fig. 6；

The upper adjusting set 41 is set in the lower adjusting set 42, and the lower adjusting set 42 can be driven to rotate；

Specifically, as shown in Figure 5,6, the outer surface of the upper end of lower adjusting set 42 is provided with key 421, the inwall of upper adjusting set 41 Keyway (being not shown) is provided with, torque is transmitted by the cooperation of key 421 and keyway, reached adjusting set 41 and drive lower regulation The effect that set 42 is rotated；Length of the keyway in axial direction is more than length of the key in axial direction, so described lower adjusting set 42 Can do based on the axial movement of other side with upper adjusting set 41；

Further, the key 421 can be spline, and the spline that bond number is four is employed in the present embodiment, so pass Pass torque steady, and process also relatively convenient.

As shown in Fig. 3,5, the upper end of upper adjusting set 41 is provided with outer cylinder gear 411, and the adjusting knob 3 is provided with and institute The inner circle gear 33 of the matching of outer cylinder gear 411 is stated, the adjusting knob 3 is by the outer cylinder gear 411 and inner circle gear 33 engagement drives the regulation drive sleeve to rotate；

The inner circle gear 33 is designed to mutually discrete three sections, is circumferentially uniformly distributed, and such three sections unconnected Groove 31 can be set between inner circle gear 33, and such more compact structure, volume is more compact.

Specifically, the cross sectional shape of the tooth of the outer cylinder gear 411 and inner circle gear 33 is triangle, and for the ease of Smoothly engagement, the outer end of outer cylinder gear 411 is circular arc.

Further, in order that outer cylinder gear 411 and inner circle gear 33 keep normal engagement, the regulation transmission Being arranged with makes outer cylinder gear 411 and inner circle gear 33 keep the elastomeric element (not shown) of engagement；

Specifically, the elastomeric element can be compression spring, and line footpath, pitch of the compression spring etc. can be according to need The precompression design wanted, as such, it is possible to obtain relatively accurate precompressed force value.

As shown in figure 1, adjust in drive sleeve being equipped with push rod 5, it is equipped with exactly lower adjusting set 42 in the present embodiment Push rod 5, the upper end of the push rod 5 is located in lower adjusting set 42, and the output end of the shell 1 is stretched out in lower end, outside the push rod 5 The inwall of surface and the regulation drive sleeve is threaded connection；The outer surface of the push rod 5 is provided with the 3rd external screw thread 51, the downward Section 42 inwalls of set are provided with the 3rd internal thread (being not shown)；

Further, the thread type of the 3rd external screw thread 51 and the 3rd internal thread is motion thread, i.e., tooth form is square Shape, trapezoidal or zigzag, in order to more resistant, preferably trapezoidal, such transmission efficiency is higher, long service life.

According to the principle of the present embodiment, push rod 5 is when push amount is adjusted, it is impossible to rotate, so the output end of the shell 1 It is provided with and limits the spline structure that the push rod 5 is rotated；

Specifically, the spline structure can be provided with least one insertion whole length on the circumference of the push rod 5 Flat gesture face 52, remaining is the 3rd external screw thread 51, as shown in Figure 7；Then the output end in the shell 1 arranges a cross section shape The rotation stop hole (being not shown) that shape is adapted with the push rod 5, as long as so rotation stop hole is fixed, push rod 5 does not just have Method is rotated；

Further, flat gesture face 52 can be multiple, but excessively, can reduce the area of flank, be unfavorable for that spiral is transported It is dynamic, it is two flat gesture faces 52 in the present embodiment；

Further, the rotation stop hole can be movable, after the output end of shell 1 is installed pushes thing container, institute State rotation stop hole to be completely fixed, push rod 5 cannot be rotated, it is ensured that push amount it is accurate；When shell 1 unloads push thing container, only Turn hole can be rotation, be easy to the reset of push rod 5.

The regulation drive sleeve is divided into after adjusting set 41 and lower adjusting set 42, the upper adjusting set 41 and lower adjusting set 42 Independently move, so easily control " regulation push amount " and " push " two processes, do not have interference；But this Sample also brings a problem, is exactly the axial position of the lower adjusting set 42 during " regulation push amount " stopping and " push " It is free to put, if the fit clearance of its being threadedly coupled between push rod 5 is than if larger, it is possible to can be in self gravitation Effect is lower or extra axial slip is produced in the case of other, will so bring the inaccurate consequence of push amount；

In order to avoid such case, the pusher is additionally provided with regulation stabilizing ring 6；The regulation stabilizing ring 6 is set in In lower adjusting set 42, the structure and shape for adjusting stabilizing ring 6 is as shown in Figure 8；

Specifically, the regulation stabilizing ring 6 and axial restraint of lower adjusting set 42, and described adjust the outer of stabilizing ring 6 Surface is connected with the inner thread of the calibration loop 2；

More specifically, the regulation outer surface of stabilizing ring 6 is provided with the 4th external screw thread 61, the inwall of the calibration loop 2 is provided with 4th internal thread, the sliding for so descending adjusting set 42 is not only threadedly coupled and push rod 5 between by its own and is limited, and is also subject to The restriction of the threaded connection between stabilizing ring 6 and calibration loop 2 is adjusted, the axial slip of lower adjusting set 42 is significantly limit；

It is described to adjust the elastic flange (being not shown) that the inwall of stabilizing ring 6 is provided with annular, outside the lower adjusting set 42 Circular surfaces are provided with the ring-shaped groove 422 matched with the elastic flange；The ring-shaped groove 422 and elastic flange are between axial direction Gap is very little, it is ensured that axial restraint each other；It should be noted that the elastic flange protrudes the regulation stabilizing ring The height of 6 inwalls is conditional, even if not so flexible, it is also possible in cannot being installed to the ring-shaped groove 422.

In order to further limit the motion for adjusting stabilizing ring 6, the regulation stabilizing ring 6 is towards the output end of the shell 1 One end be provided with the inwall circumferencial direction of the shell 1 fix, axial unfixed default fit structure；

Specifically, the regulation outer surface of stabilizing ring 6 is provided with anti-rotation projection 62, and the shell 1 is provided with convex with the anti-rotation The anti-rotation groove (being not shown) that block 62 is matched, axially extended；When so described regulation stabilizing ring 6 axially moves, Can only move axially along the direction of the anti-rotation groove, so can more limit lower adjusting set 42 and adjust axial sliding after stopping Move.

In order to control push amount, the output end of the shell 1 is provided with the baffle ring of control push amount, and the baffle ring is fixed on institute The precalculated position of the inwall of shell 1 is stated, the baffle ring is provided with diameter between the outside diameter of the push rod 5 and adjusts drive sleeve lower end most Endoporus between major diameter；So described regulation drive sleeve is moved downwardly to baffle ring position, is stopped by the upper surface of the baffle ring, Namely calibration loop 2 adjusts the position of drive sleeve in zero-bit at stop.

In the present embodiment, the inwall of the shell 1 is provided with combination function ring 8, as shown in Fig. 9,10, the combination function ring 8 Lower end has the function of the baffle ring, that is, be provided with diameter between the outside diameter of the push rod 5 and adjust drive sleeve lower end maximum directly Endoporus between footpath；

The upper end inwall of the combination function ring 8 is additionally provided with spiral shell in the 5th of the first external screw thread 21 for matching the calibration loop 2 Line 81, and the combination function ring 8 also is provided with the corresponding rectangular opening 82 of reading window 11 of the shell 1, is so easy to check The medicament scale of calibration loop 2；

In the present embodiment, the internal thread that the first external screw thread 21 with calibration loop 2 is matched is arranged on combination function ring 8, And separate with shell 1, so it is easy to the processing and manufacturing of shell 1, shell 1 can be made to focus more on the attractive in appearance etc. external of profile Design, is not described further；

In actual use, for the ease of processing and assembling, the combination function ring 8 can also be divided into two or more portions Part makes respectively and assembles, and is not described further.

Further, the endoporus of the lower end of combination function ring 8 is divided in the axial direction the different He of the first cavity 83 of diameter Second cavity 84, the predetermined threshold value with diameter greater than the lower end maximum gauge of the lower adjusting set 42 of first cavity 83 is described The diameter of the second cavity 84 is between the outside diameter of the push rod 5 and adjusts between the maximum gauge of drive sleeve lower end.

The diameter of second cavity 84 between the outside diameter of the push rod 5 and adjust drive sleeve lower end maximum gauge it Between, exactly for after default push amount is completed, preventing to adjust moving down for drive sleeve, but wearing for push rod 5 can not be affected Cross；

The predetermined threshold value with diameter greater than the lower end maximum gauge of the lower adjusting set 42 of first cavity 83, and this is pre- If threshold value is to need strict control, such as at least need (according to different material and surface roughness, to be had more than 0.05mm It is different), the first cavity 83 of the combination function ring 8 is smoothly stretched in the lower end that can so enable the lower adjusting set 42, but The value with diameter greater than the lower end maximum gauge of the lower adjusting set 42 of the first cavity 83 can not be too big, i.e., gap can not be too big, When so adjusting the rotation and movement of drive sleeve, radially do not have and rock；

Further, the lower end of lower adjusting set 42 can arrange elastic construction, such as arrange elastic steel ball, so can be more Further ensure radially not have to rock；

Further, the lower end of lower adjusting set 42 is radially provided with circumferentially equally distributed elastic bumps；Described The inwall of one cavity 83 is provided with the spring groove matched with the elastic bumps.

In the embodiment of the present invention, the elastic construction see lower surface orthographic drawing that Figure 11, Figure 11 are lower adjusting set 42 (from Underface looks up), as illustrated, the lower end of lower adjusting set 42 includes triangular hill 423, elastic support arm 424, elastic equilibrium Projection 425, wherein triangular hill 423 are provided with four, are separately positioned on two elastic support arms 424, elastic equilibrium projection 425 Two, circumference is distributed on, from for whole circumference, four triangular hills 423 and two elastic equilibrium projections 425 are circumferentially Uniformly；Correspondingly, it is three that the inwall of the first cavity 83 is provided with the cross sectional shape matched with the triangular hill 423 Angular internal gear 831；

It is such to have the technical effect that, in addition to it can preferably ensure radially not having and rock, also when push amount is adjusted, meeting The sensation of obvious intermittent rotary is brought to patient, that is, adjusts one section of default push amount, the sensation of click, and meeting are had on hand Sound is sent, is easy to patient to be operated in the case where push thing scale mark is not seen, because many diabetics Eyesight has very big decline；And such structure also will not produce obstruction to axial movement during push, it is ensured that lower to adjust The normal movement of set 42, the i.e. normal movement of push rod 5；

Further, the structure in the elastic support arm 424 has on the basis of certain elasticity, the lower adjusting set 42 Material is preferably also the big material of elasticity, will not be described here.

As shown in figure 1, the adjustable side of the shell 1 is provided with push button 7, when the push button 7 is pressed, can push away The dynamic regulation drive sleeve is moved to output end；

Wherein, the push button 7 includes cylinder and shade, and the shade is located at the top of the cylinder；The cylinder The endoporus of the adjusting knob 3 can be passed through, the upper surface for adjusting drive sleeve is extruded；The shade with diameter greater than the tune The endoporus of section knob 3；

Specifically, the adjusting knob 3 is provided with the through hole that the cylinder for pushing button 7 is passed through, described so when pushing The cylinder for pushing button 7 passes through the adjusting knob 3, extrudes the upper surface for adjusting drive sleeve, makes regulation drive sleeve downward Fang Yidong；

In the present embodiment, when pushing, the cylinder extruding upper surface for adjusting drive sleeve of the push button 7, On the one hand regulation drive sleeve is moved downward, drives the push campaign of push rod 5, on the other hand, make the outside cylinder of regulation drive sleeve Gear 411 is disengaged from state with the inner circle gear 33 of adjusting knob 3；

So, adjusting knob 3 can just depart from regulation drive sleeve self-movement, due to the shade for pushing button 7 With diameter greater than the endoporus of the adjusting knob 3, while pushing, the shade of the push button 7 is produced to adjusting knob 3 and squeezed Pressure, makes adjusting knob 3 spin descending motion together with calibration loop 2, makes scale be zeroed；

Specifically, it is divided into upper adjusting set 41 and lower adjusting set 42 due to adjusting drive sleeve, so during push, institute The effect that stabilizing ring 6 serves transmission power that adjusts is stated, when the lower end for pushing button 7 extrudes the upper surface of the upper adjusting set 41 When, upper adjusting set 41 is moved downward, and the lower end for so going up adjusting set 41 just touches the upper surface of the regulation stabilizing ring 6, pushes away The dynamic stabilizing ring 6 that adjusts is moved down, and adjusts the axial restraint of stabilizing ring 6 and lower adjusting set 42, so just driving the downward Section set 42 moves linearly downwards, that is, promotes push rod 5 to make the action for pushing.

The above, only presently preferred embodiments of the present invention is not intended to limit protection scope of the present invention, it is all Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in the protection of the present invention Within the scope of.

Claims

1. a kind of pusher, it is characterised in that including shell, calibration loop, adjusting knob, adjust drive sleeve, adjust stabilizing ring, Push rod and push button；Wherein,

The scale ring outer surface is provided with push amount scale mark, and the calibration loop is arranged on the inwall of the shell, and institute The outer surface for stating calibration loop is connected with the inner thread of the shell；

The adjusting knob is arranged on the adjustable side of the shell, and is fixedly connected with the calibration loop, and the calibration loop is with institute State the rotation of adjusting knob and rotate；

The regulation drive sleeve wears in the housing, and one end is connected with the adjusting knob, and the regulation drive sleeve is with institute State the rotation of adjusting knob and rotate；

The regulation stabilizing ring is set in the regulation drive sleeve, and the regulation stabilizing ring and the regulation drive sleeve axial direction It is fixed；The outer surface for adjusting stabilizing ring is connected with the inner thread of the calibration loop；

One end of the push rod is located in regulation drive sleeve, and the other end stretches out the output end of the shell, outside the push rod The inwall of surface and the regulation drive sleeve is threaded connection；The output end of the shell is additionally provided with and limits what the push rod was rotated Spline structure；

Described to push the adjustable side that button is arranged on the shell, the lower end of the push button passes through the adjusting knob, institute State regulation drive sleeve and press to output end movement with pressing for the push button.

2. pusher according to claim 1, it is characterised in that the regulation stabilizing ring is towards the shell output end One end be provided with the outer casing inner wall circumferencial direction fix, axial unfixed default fit structure.

3. pusher according to claim 2, it is characterised in that it is convex that the stable ring outer surface of the regulation is provided with anti-rotation Block, the shell is provided with the anti-rotation groove for matching with the anti-rotation projection, axially extending.

4. pusher according to claim 1, it is characterised in that the regulation stabilizing ring inwall is provided with the elasticity of annular Flange, the regulation drive sleeve outer surface is provided with the ring-shaped groove matched with the elastic flange.

5. pusher according to claim 1 and 2, it is characterised in that the output end of the shell is provided with control and pushes The baffle ring of amount, the baffle ring is fixed on the precalculated position of the outer casing inner wall, and the baffle ring is provided with diameter outside the push rod Endoporus between circular diameter and regulation drive sleeve lower end maximum gauge.

6. pusher according to claim 1 and 2, it is characterised in that described regulation drive sleeve one end is provided with outside cylinder Gear, the adjusting knob is provided with the inner circle gear matched with the outer cylinder gear, and the adjusting knob is by described cylindrical The engagement of stud wheel and inner circle gear drives the regulation drive sleeve to rotate.

7. pusher according to claim 6, it is characterised in that the regulation transmission is arranged with and makes the outer cylindrical gear Wheel and inner circle gear keep the elastomeric element of engagement.

8. pusher according to claim 6, it is characterised in that the regulation drive sleeve includes upper adjusting set and downward Section set；The upper regulation wears the inwall for being located at the calibration loop, and described upper adjusting set one end is provided with the outer cylinder gear；Institute State lower regulation drive sleeve and be provided with the internal thread coordinated with the push rod, the lower regulation wears and is located in the upper adjusting set, institute State lower adjusting set to rotate with the rotation of the upper adjusting set.

9. pusher according to claim 5, it is characterised in that the endoporus of the baffle ring is divided in the axial direction diameter not The first cavity together and the second cavity, the default threshold with diameter greater than the lower adjusting set lower end maximum gauge of first cavity Value, the diameter of second cavity is between the push rod outside diameter and regulation drive sleeve lower end maximum gauge.

10. pusher according to claim 8, it is characterised in that the lower adjusting set lower end be provided with reduction it is described under Adjusting set is in first cavity inside diameter to the elastic construction for rocking.

11. pushers according to claim 10, it is characterised in that the lower adjusting set lower end outer round surface be provided with to Lack two circumferentially equally distributed elastic bumps；The baffle ring endoporus inwall is provided with match with the elastic bumps elastic recessed Groove.

12. pushers according to claim 1 and 2, it is characterised in that the push button includes cylinder and shade, The shade is located at the top of the cylinder；The cylinder through the adjusting knob endoporus and with the regulation drive sleeve End contact；The endoporus with diameter greater than the adjusting knob of the shade.