CN206675785U - A kind of pusher - Google Patents

Abstract

The utility model discloses a kind of pusher, including shell, the inwall of shell is provided with calibration loop, and the outer surface of calibration loop and the inner thread of shell connect；One end of shell is additionally provided with adjusting knob, and adjusting knob is fixedly connected with calibration loop, and calibration loop rotates with the rotation of adjusting knob；The regulation drive sleeve being located in shell, one end are connected with adjusting knob, and regulation drive sleeve rotates with the rotation of adjusting knob；The regulation stabilizing ring of regulation drive sleeve, the inner thread connection of its outer surface and calibration loop are set in, and is fixedly connected in the axial direction with regulation drive sleeve；One end is located in the push rod in regulation drive sleeve, and its other end stretches out the output end of shell, and the outer surface of push rod and the inwall of regulation drive sleeve are threaded connection；The output end of shell is additionally provided with the spline structure that limitation push rod rotates；Push button installed in shell adjustable side, when pressing pushes button, regulation drive sleeve can be promoted to be moved to output end.

Description

A kind of pusher

Technical field

It the utility model is related to medical instruments field, and in particular to a kind of pusher.

Background technology

For diabetic, its blood glucose target is critically important, it is necessary to regularly concern and record, and in order to subtract The fluctuation of few patient blood glucose's index by medicine, it is necessary to be controlled.Human insulin is a kind of well known medicine for reducing blood glucose target Thing, it must parenteral administration, could be worked in human body.At present, the most normal of human insulin is applied to diabetic Square formula is to pass through hypodermic injection；The syringe mostly using disposable or fixed dosage is subcutaneously injected, 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, the problem of cumbersome or cost is high be present, If there can be a kind of quantitative injection device easy to operate, cost is low, or quantitative pusher, it just can solve this and ask Topic.

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

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

Utility model content

In view of this, the utility model embodiment it is expected to provide a kind of pusher, can accurately adjust push thing usage amount, And it is easy to use, cost is low.

To reach above-mentioned purpose, what the technical solution of the utility model was realized in：

The utility model embodiment provides a kind of pusher, including shell, calibration loop, adjusting knob, regulation transmission Set, regulation stabilizing ring, push rod and push button；Wherein,

One end of the shell is the output end of connection push thing container, and the other end is the adjustable side of regulation 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 Rotated with the rotation of the adjusting knob；

The regulation drive sleeve is worn in the housing, and one end is connected with the adjusting knob, the regulation drive sleeve Rotated 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 of the regulation 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 it is described regulation drive sleeve inwall for threaded connection；The output end of the shell is additionally provided with the limitation push rod and turned Dynamic spline structure；

The push button is arranged on the adjustable side of the shell, and the lower end of the push button is revolved through the regulation Button, the regulation drive sleeve press 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, the unfixed default fit structure in axial direction.

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 The anti-rotation groove match somebody with somebody, axially extended.

Preferably, the regulation stabilizing ring inwall is provided with the elastic flange of annular, and 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 in the shell The precalculated position of wall, the baffle ring are provided with diameter between the push rod outside diameter and regulation drive sleeve lower end maximum gauge 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 drive the regulation by the engagement of the outer cylinder gear and inner circle gear Drive sleeve rotates.

Preferably, the regulation drive sleeve, which is provided 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, which is worn, is located at the quarter The inwall of ring is spent, described upper adjusting set one end is provided with the outer cylinder gear；The lower regulation is arranged with to be coordinated with the push rod Internal thread, the lower regulation wears and is located in the upper adjusting set, the lower adjusting set with the rotation of the upper adjusting set and Rotate.

Preferably, the endoporus of the baffle ring is divided into different the first cavitys and the second cavity of diameter in the axial direction, and described The diameter of one cavity is more than the predetermined threshold value of the lower adjusting set lower end maximum gauge, and 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, which is provided with, reduces the lower regulation and is enclosed on 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 diameter of the shade is more than the tune Save the endoporus of knob.

The pusher that the utility model embodiment provides, including shell, one end of shell is connection push thing container Output end, the other end are the adjustable side of regulation push amount；The inwall of shell is provided with calibration loop, and scale ring outer surface is provided with push Scale mark is measured, and the inner thread of the outer surface of calibration loop and shell connects；One end of shell is also equipped with adjusting knob, adjusts Section knob is fixedly connected with calibration loop, when rotating adjusting knob, calibration loop can be driven to rotate；The regulation being located in shell passes Dynamic set, one end is connected with adjusting knob, when rotating adjusting knob, regulation drive sleeve can be driven to rotate；It is set in regulation transmission The inner thread connection of the regulation stabilizing ring of set, its outer surface and calibration loop, and be fixedly connected in the axial direction with regulation drive sleeve； One end is located in the push rod in regulation drive sleeve, and its other end stretches out the output end of shell, and the outer surface of push rod and regulation are driven The inwall of set is threaded connection；The output end of shell is additionally provided with the spline structure that limitation push rod rotates；Installed in shell adjustable side Push button, when pressing push button when, can promote adjust drive sleeve to output end movement；It can be seen that the utility model is implemented The pusher of example, by the regulation of adjusting knob, regulation drive sleeve, push rod and shell, the screw of calibration loop are driven, and The axial slip of regulation drive sleeve is reduced by adjusting stabilizing ring, can accurately adjust push thing usage amount, it is easy to use, and all It is low without using electronic control part, cost using mechanical structure.

Brief description of the drawings

Fig. 1 is the schematic cross-sectional view of the utility model embodiment pusher；

Fig. 2 is the profile schematic perspective view of the utility model embodiment pusher；

Fig. 3 is the schematic diagram of the adjusting knob in the utility model embodiment pusher；

Fig. 4 is the schematic diagram of the calibration loop in the utility model embodiment pusher；

Fig. 5 is the schematic diagram of the upper adjusting set in the utility model embodiment pusher；

Fig. 6 is the schematic diagram of the lower adjusting set in the utility model embodiment pusher；

Fig. 7 is the schematic diagram of the push rod in the utility model embodiment pusher；

Fig. 8 is the schematic diagram of the regulation stabilizing ring in the utility model embodiment pusher；

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

Figure 10 is the schematic diagram two of the combination function ring in the utility model embodiment pusher；

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

Embodiment

Pusher in the utility model embodiment, including shell, one end of shell is the defeated of connection push thing container Go out end, the other end is the adjustable side of regulation 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 inner thread of the outer surface of calibration loop and shell connects；One end of shell is also equipped with adjusting knob, regulation Knob is fixedly connected with calibration loop, when rotating adjusting knob, calibration loop can be driven to rotate；The regulation transmission being located in shell Set, one end is connected with adjusting knob, when rotating adjusting knob, regulation drive sleeve can be driven to rotate；It is set in regulation drive sleeve Regulation stabilizing ring, the inner thread of its outer surface and calibration loop connects, and is fixedly connected in the axial direction with regulation drive sleeve；One End is located in the push rod in regulation drive sleeve, and its other end stretches out the output end of shell, the outer surface of push rod and regulation drive sleeve Inwall for threaded connection；The output end of shell is additionally provided with the spline structure that limitation push rod rotates；Installed in shell adjustable side Button is pushed, when pressing pushes button, regulation drive sleeve can be promoted to be moved to output end.

The course of work of the utility model embodiment includes installation push thing container, regulation push amount, push and reset, tool The operation principle of body is as follows：

1) installation 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 of push thing, pushed, abandon bottle for material, material bin can be recycled；It can also be integral, i.e. material bin It is integral with bottle for material, directly loads onto, has pushed directly discarding, be 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, adjusting knob is rotated, makes adjustable side spiral of the adjusting knob to shell, adjusting knob Rotate, regulation drive sleeve can be driven to rotate, due to regulation drive sleeve with push rod to be threadedly coupled, but the rotation of push rod is by structure Limitation, and the piston of bottle for material has been withstood on the head of push rod, resistance is larger, powerless to be moved axially to output end, i.e.,：It can not turn Dynamic, powerless movement, so the regulation extreme direction spiral that regulation drive sleeve can be to shell, so adjusts drive sleeve towards shell One end of output end and the output end of shell can produce a certain distance with the spiral of regulation 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 have 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 can by adjust drive sleeve displacement be amplified by calibration loop, push amount scale mark is more accurate；

In order to adjust drive sleeve after regulation stops, i.e., after adjusting knob, regulation drive sleeve and calibration loop stop operating, adjust Section drive sleeve will not slide downwards under gravity, because the gap of the threaded connection of regulation drive sleeve and push rod is that have necessarily Scope, if gap is excessive, easily occur freely to slide；The regulation drive sleeve is arranged with regulation stabilizing ring, and described Adjust stabilizing ring and the regulation drive sleeve axial restraint；The outer surface of the regulation stabilizing ring and the inwall spiral shell of the calibration loop Line connects；The sliding of so regulation drive sleeve is not only threadedly coupled by its own between push rod to be limited, also regulated The limitation of threaded connection between stabilizing ring and calibration loop, prevent to adjust the axial slip of drive sleeve substantially；

3) push, press push button, push button can promote regulation drive sleeve to be moved to the output end of shell, and regulation passes Dynamic set and push rod threaded connection, will also promote push rod to move, until the one end for adjusting drive sleeve towards shell output end is withstood Shell, complete the push of setting push amount；Simultaneously push button when moving down also can squeeze adjustments knob, and then drive carve Degree ring makees spiral decline, scale zero.

Pay attention to：If the push thing of bottle for material has not pushed, push rod can not rotate, that is, push thing container can not Dismounting, it otherwise can influence the accuracy of push amount.

4) reset, the push thing of bottle for material has pushed, and dismounting push thing container, releases the rotation limitation of push rod, manually rotation Turn push rod, push rod is moved to the adjustable side of shell, the position returned to before not pushing；

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

The utility model embodiment is mainly used in diabetic or other patients push liquid preparation, but the skill of this area Art personnel are understood that, can be used for other occasions for needing quantitatively to push other materials, will not be described here.

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

Simple in order to state, direction as shown in Figure 1 describes pusher and its parts, i.e., above, lower section refers both to 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 is connection push thing container Output end, upper end for regulation push amount adjustable side；The inwall of the shell 1 is provided with calibration loop 2, the appearance of calibration loop 2 Face is provided with push thing scale mark (not shown), and the outer surface of the calibration loop 2 and the inner thread of the shell 1 Connection, i.e., the 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 the 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, preferably rectangle, such transmission efficiency, frictional force are small.

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 rotating the adjusting knob 3, the calibration loop 2 can be driven to rotate；As shown in Fig. 3, Fig. 4, the adjusting knob 3 and institute Calibration loop 2 is stated to be fixed together by a kind of joinery and its construction；

Specifically, the upper end of calibration loop 2 is provided with the elastic projection 22 of axial direction, and the adjusting knob 3 is provided with described in matching The groove 31 of elastic projection 22；Wherein, the elastic projection 22 is shaped as T-shaped, and two are one group, totally three groups, axially Even distribution；Corresponding, the groove 31 also is provided with three；After the elastic projection 22 stretches into 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 is described provided with being easy to The taper that elastic projection 22 stretches into；

Described every group of purpose for setting two elastic projections 22 of elastic projection 22 is elastic big, is easy to assemble.

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

The outer surface of the adjusting knob 3 is provided with the annular knurl 32 of increase frictional force, and the type of annular knurl has a lot, do not limited 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 set by helix, and from top to bottom, is stepped up scale value.

As shown in figure 1, regulation drive sleeve is provided with the inner chamber of the shell 1, the regulation transmission set upper side and the tune Section knob 3 connects, and when rotating the adjusting knob 3, 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 lower upper end of adjusting set 42 is provided with key 421, the upper inwall of adjusting set 41 (it is not shown) provided with keyway, torque is transmitted by the cooperation of key 421 and keyway, is reached adjusting set 41 and drive lower adjust The effect that set 42 rotates；Length of the keyway in axial direction is more than length of the key in axial direction, so described lower adjusting set 42 The axial movement based on other side can be done 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, is so passed It is steady to pass torque, and processes also relatively convenient.

As shown in Fig. 3,5, the upper upper end of 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 passes through 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, the line footpath of the compression spring, pitch etc. can be according to need The precompression design wanted, so, can obtain relatively accurate precompressed force value.

It is exactly to be equipped with lower adjusting set 42 in the present embodiment as shown in figure 1, being equipped with push rod 5 in regulation drive sleeve Push rod 5, the upper end of push rod 5 are located in lower adjusting set 42, and the output end of the shell 1 is stretched out in lower end, the push rod 5 The inwall of outer surface and the regulation drive sleeve is threaded connection；The outer surface of push rod 5 is provided with the 3rd external screw thread 51, under described The inwall of adjusting set 42 is 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, preferably trapezoidal in order to more resistant, such transmission efficiency is higher, service life length.

According to the principle of the present embodiment, push rod 5 is when adjusting push amount, it is impossible to rotates, so the output of the shell 1 End, which is provided with, limits the spline structure that the push rod 5 rotates；

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 one cross section shape is set in the output end of the shell 1 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 rotates；

Further, flat gesture face 52 can be multiple, but excessively, the area of flank can be reduced, is unfavorable for spiral fortune 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 installation push thing container of shell 1, institute State rotation stop hole to be completely fixed, push rod 5 can not rotate, and ensure that the accurate of push amount；Thing container is pushed when shell 1 unloads, only Turn hole is rotary, is easy to the reset of push rod 5.

After the regulation drive sleeve is divided into adjusting set 41 and lower adjusting set 42, the upper adjusting set 41 and lower adjusting set 42 Independently move, be so easier 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 threaded connection between push rod 5 is bigger, it is possible to can be in self gravitation Extra axial slip is produced in the case of effect is lower or 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 of the regulation stabilizing ring 6 are as shown in Figure 8；

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

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

Regulation stabilizing ring 6 inwall is provided with the elastic flange (being not shown) of 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, ensures mutual axial restraint；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 to can not be installed in the ring-shaped groove 422.

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

Specifically, regulation stabilizing ring 6 outer surface 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, It can only be moved axially along the direction of the anti-rotation groove, it is sliding so more to limit axial direction of the lower adjusting set 42 after regulation stops 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 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 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, i.e., maximum straight between the outside diameter of push rod 5 and regulation drive sleeve lower end provided with diameter Endoporus between footpath；

The upper end inwall of 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 be provided with the reading window 11 of the shell 1 corresponding to rectangular opening 82, be 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 matches is arranged on combination function ring 8, And separated 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 and assembled respectively, is not described further.

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

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

The diameter of first cavity 83 is more than the predetermined threshold value of the lower lower end maximum gauge of adjusting set 42, and this is pre- If threshold value needs strictly to control, for example at least needs (according to different material and surface roughness, to have more than 0.05mm It is different), it the lower end of the lower adjusting set 42 is smoothly stretched into the first cavity 83 of the combination function ring 8, still The value that the diameter of first cavity 83 is more than the lower lower end maximum gauge of adjusting set 42 can not be too big, i.e., gap can not be too big, When so adjusting the rotation and movement of drive sleeve, do not have radially and rocks；

Further, the lower end of lower adjusting set 42 can set elastic construction, such as set elastic steel ball, so can be more Further ensure not have radially 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 utility model embodiment, the elastic construction is shown in that Figure 11, Figure 11 are the lower surface orthographic projection of lower adjusting set 42 Scheme (being looked up from underface), as illustrated, the lower end of lower adjusting set 42 includes triangular hill 423, elastic support arm 424, bullet Sexual balance projection 425, wherein triangular hill 423 are provided with four, are separately positioned on two elastic support arms 424, elastic equilibrium Projection 425 two, is distributed on circumference, for whole circumference, four triangular hills 423 and two elastic equilibrium projections 425 It is circumferentially uniform；Correspondingly, the inwall of the first cavity 83 is provided with the section matched with the triangular hill 423 It is shaped as the internal gear 831 of triangle；

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

Further, on the basis of the structure of the elastic support arm 424 has 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 pressing the push button 7, can push away The dynamic regulation drive sleeve moves 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, extrudes the upper surface of the regulation drive sleeve；The diameter of the shade is more than the tune Save the endoporus of knob 3；

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

In the present embodiment, in push, the upper surface of the cylinder extruding regulation 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 The inner circle gear 33 of gear 411 and adjusting knob 3 is disengaged from state；

So, the can of adjusting knob 3 departs from regulation drive sleeve self-movement, due to the shade for pushing button 7 Diameter is more than the endoporus of the adjusting knob 3, and while push, the shade of the push button 7 produces to adjusting knob 3 to be squeezed Pressure, adjusting knob 3 is spinned descending motion together with calibration loop 2, scale is zeroed；

Specifically, because regulation drive sleeve is divided into upper adjusting set 41 and lower adjusting set 42, so during push, institute The effect that regulation stabilizing ring 6 serves passing power is stated, when the lower end of push button 7 extrudes the upper surface of the upper adjusting set 41 When, upper adjusting set 41 moves downward, and the lower end of so upper adjusting set 41 just touches the upper surface of the regulation stabilizing ring 6, pushes away Dynamic regulation stabilizing ring 6 moves down, and adjusts stabilizing ring 6 and the axial restraint of 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 pushed.

It is described above, preferred embodiment only of the present utility model, it is not intended to limit protection of the present utility model Scope, all made within spirit of the present utility model and principle all any modification, equivalent and improvement etc., should be included in Within the scope of protection of the utility model.

Claims (12)

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

   One end of the shell is the output end of connection push thing container, and the other end is the adjustable side of regulation 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 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 is worn 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 of the regulation stabilizing ring is connected with the inner thread of the calibration loop；

   One end of the push rod is located in regulation drive sleeve, the output end of the other end stretching 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 what the limitation push rod rotated Spline structure；

   The push button is arranged on the adjustable side of the shell, and 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. 2. pusher according to claim 1, it is characterised in that the stabilizing ring that adjusts is towards the shell output end One end be provided with fixed with the outer casing inner wall circumferencial direction, axial unfixed default fit structure.
3. 3. pusher according to claim 2, it is characterised in that it is convex that the stable ring outer surface of regulation is provided with anti-rotation Block, the shell are provided with the anti-rotation groove for matching, axially extending with the anti-rotation projection.
4. 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 are provided with the ring-shaped groove matched with the elastic flange.
5. 5. pusher according to claim 1 or 2, it is characterised in that the output end of the shell is provided with control and pushed The baffle ring of amount, the baffle ring are 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. 6. pusher according to claim 5, it is characterised in that described regulation drive sleeve one end is provided with outer cylindrical gear Wheel, the adjusting knob are provided with the inner circle gear matched with the outer cylinder gear, and the adjusting knob passes through the outside cylinder The engagement of gear and inner circle gear drives the regulation drive sleeve to rotate.
7. 7. pusher according to claim 6, it is characterised in that the regulation drive sleeve, which is provided with, makes the outer cylindrical gear Wheel and inner circle gear keep the elastomeric element of engagement.
8. 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 and be arranged with the internal thread coordinated with the push rod, the lower regulation, which is worn, to be located in the upper adjusting set, under described Adjusting set rotates with the rotation of the upper adjusting set.
9. 9. pusher according to claim 8, it is characterised in that the endoporus of the baffle ring is divided into diameter not in the axial direction Same the first cavity and the second cavity, the diameter of first cavity are more than the default threshold of the lower adjusting set lower end maximum gauge Value, the diameter of second cavity is between the push rod outside diameter and regulation drive sleeve lower end maximum gauge.
10. 10. pusher according to claim 9, it is characterised in that the lower adjusting set lower end be provided with reduce it is described under Adjusting set is in first cavity inside diameter to the elastic construction rocked.
11. 11. pusher according to claim 10, it is characterised in that the lower adjusting set lower end outer round surface is provided with extremely Lack two circumferentially equally distributed elastic bumps；The baffle ring endoporus inwall is elastic recessed provided with being matched with the elastic bumps Groove.
12. 12. pusher according to claim 1 or 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 diameter of the shade is more than the endoporus of the adjusting knob.