CN209500444U - A kind of dosage adjusting insurance position-limit mechanism - Google Patents
A kind of dosage adjusting insurance position-limit mechanism Download PDFInfo
- Publication number
- CN209500444U CN209500444U CN201821676174.XU CN201821676174U CN209500444U CN 209500444 U CN209500444 U CN 209500444U CN 201821676174 U CN201821676174 U CN 201821676174U CN 209500444 U CN209500444 U CN 209500444U
- Authority
- CN
- China
- Prior art keywords
- dosage
- bounce
- ratchet
- elastic slice
- clutch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of dosage to adjust insurance position-limit mechanism, including components compositions such as shell, dosage drum, drive rod, differential bar and bounce clutches, the outside of drive rod is equipped with the guide groove axially extended, the inside of differential bar is equipped with the guide protrusions cooperated with guide groove, and the limited block of limitation differential bar axial displacement is equipped in guide groove.During dosage setting, user rotates forward dosage drum until guide protrusions offset with guide groove, reach maximum dose, maximum dose is the suitable dose of user's drug injection, first ratchet of bounce clutch front is equipped with bounce elastic slice, the inside of dosage drum front is equipped with the lug boss that the elastic slice that can make to beat generates vibration, and when dosage drum turns to maximum dose, bounce elastic slice springs back sounding.User does not need to watch the scale of dosage drum attentively during dosage setting, and the user for facilitating eyesight not good enough uses.
Description
Technical field
The utility model relates to technical field of medical equipment, in particular to a kind of dosage adjusts insurance position-limit mechanism.
Background technique
Traditional syringe needs certain operation skill when in use, and professional is also required to grasp by training
Its application method is obviously not suitable for the patient with chronic diseases such as diabetes and uses.Injection pen is that a kind of be directed to does not pass through
The medicine delivery device for crossing ordinary people's exploitation of medical training, have many advantages, such as it is easy to operate, can quantify, therefore obtained wide
General application.
Injection pen needs first to set before use injection dosage appropriate, and user rotates the dosage drum of injection pen, dosage
Cylinder threadingly rotates, and generates axial movement, so that the limiting section in the front end and shell of dosage drum is generated distance, makes in injection process
User's promoting button, and then dosage drum is pushed to be axially moveable, until the front end of dosage drum is bonded i.e. with the limiting section in shell
Achievable injection, the distance between injection dosage and limiting section in dosage drum front end and shell are proportional.In the process, it uses
Person needs to watch dosage drum attentively, judges whether the dosage of injection pen setting is suitable, and the user of injection pen is often older, view
Power is not good enough, judges that setting dosage is very painstaking by observation scale.
Therefore, how one kind is provided and judges that the whether suitable dosage of setting dosage adjusts insurance position-limit mechanism convenient for user
It is those skilled in the art's technical problem urgently to be solved.
Utility model content
The purpose of the utility model is to provide a kind of dosage to adjust insurance position-limit mechanism, and maximum dose is drug injection
Suitable dose, when being adjusted to maximum dose, bounce elastic slice generate flexible deformation vibrate and issue rebound auditory tone cues, be convenient for
User judges.
To achieve the above object, the utility model provides a kind of dosage adjusting insurance position-limit mechanism, for drug conveying dress
It sets, including shell, drive rod, differential bar, dosage drum and bounce clutch, the dosage drum are set in the shell, the two
Between there is guide thread, the differential bar is set in the dosage drum, and the dosage drum front is equipped with driving section, the differential
Bar front is equipped with clutch part, and the bounce clutch is between the driving section and the clutch part, and its front has use
With the first ratchet being driven with the driving section single direction rotation, the rear part has to be driven with the clutch part single direction rotation
Second ratchet, when the dosage drum rotates forward, second ratchet and the clutch part offset, to prevent the bounce clutch
Device is rotated with dosage drum, relative motion between first ratchet and the driving section, and first ratchet is equipped with bounce elastic slice, institute
It states driving section and is equipped with the lug boss that can generate single-direction transmission with the bounce elastic slice, the drive rod is set to the differential bar
In, the outside of the drive rod is equipped with the guide groove axially extended, the inside of the differential bar be equipped with to the guiding
The guide protrusions of slot cooperation, the differential bar can the guide groove described in the drive lower edge of the dosage drum it is mobile, the guiding
The limited block to limit the differential bar axial displacement is equipped in slot, the bounce elastic slice being capable of pushing away in the lug boss
Dynamic lower generation flexible deformation, when the guide protrusions offset with the limited block, the bounce elastic slice restores flexible deformation
And spring back sounding.
Preferably, the side wall of first ratchet has the notch section in impenetrating thickness direction, the end of the bounce elastic slice
It is fixedly connected with the side of the notch section, front end is suspended in the notch section, and the bounce elastic slice front end is equipped with radially
Outwardly extending ratchet.
Preferably, the angle that the bounce elastic slice corresponds to the dosage drum rotation is default angle of circumference, and the dosage drum turns
The stroke for crossing the differential bar corresponding when the default angle of circumference is greater than or equal to the differential defined by the block
The stroke of bar.
Preferably, it is equipped with two notch sections in first ratchet, is equipped with the bounce bullet in two notch sections
Piece, center of circle central symmetry of the two bounce elastic slices about first ratchet.
Preferably, the lug boss is set to the inside of the clutch part and radially inwardly extending, and the clutch part is set
There is a recessing groove to accommodate the ratchet, the recessing groove is close to the lug boss.
Preferably, the ratchet is two, and the center of circle central symmetry about the clutch part.
Preferably, the ratchet includes the first sealed face and the first guide surface, when the bounce clutch and the differential
When bar relatively rotates, first guide surface is contacted with the lug boss, and the first sealed face is parallel to first ratchet
Radial direction, first guide surface moves closer to the described first sealed face along direction from bottom to top.
Preferably, the lug boss includes the second sealed face and the second guide surface, and the second sealed face is parallel to described
The radial direction of clutch part, second guide surface move closer to the described second sealed face along direction from bottom to top.
Preferably, the thickness of the bounce elastic slice is less than the thickness of the first ratchet side wall.
Preferably, the clutch part rear end has to the sliding step surface with the bounce clutch rear end face cooperation,
The rear end face of the bounce clutch is equipped with the clamping portion that axially extends, the sliding step surface equipped with to the clamping
The concave part that portion is engaged by clamping.
Dosage provided by the utility model adjusts insurance position-limit mechanism in medicine delivery device, dosage to adjust insurance
Position-limit mechanism includes the drive rod being successively arranged from inside to outside, differential bar, dosage drum and shell, is had between shell and dosage drum
Guide thread, user's forward direction twist dosage drum, rotate it along guide thread, to convert axial shifting for circumferential movement
Dynamic, the front end of dosage drum is moved to the direction far from housing front.Differential bar is set in dosage drum, when dosage drum generates axially
When mobile, the driving section of dosage drum front can push differential bar to be axially moveable.Drive rod is set in differential bar, drive rod
Outside be equipped with the guide groove that axially extends, the inside of differential bar is equipped with the guide protrusions to cooperate with guide groove, is on duty
When fast bar is axially moveable under the drive of dosage drum, guide protrusions move in guide groove.Limited block is equipped in guide groove,
Limited block can limit the stroke of the axial movement of differential bar.When guide protrusions and limited block offset, differential bar can
Dosage drum is prevented to continue to rotate, to limit dosage drum axial position.The insurance position-limit mechanism of dosage adjusting at this time reaches its maximum
Dosage, maximum dose are the suitable dose of user's drug injection, and user can directly carry out drug note after the completion of adjusting
It penetrates.
Dosage drum front is equipped with driving section, and differential bar front is equipped with clutch part, and bounce is equipped between driving section and clutch part
Clutch, the front for clutch of beating is with the first ratchet for being driven with driving section single direction rotation, after clutch of beating
Portion has the second ratchet for being driven with clutch part single direction rotation, when dosage drum rotates forward, the first ratchet and driving section
Between can not be driven, the second ratchet offsets with clutch part, so as to prevent the first ratchet from rotating with dosage drum.First ratchet is equipped with
Bounce elastic slice, driving section are equipped with the lug boss that single-direction transmission can be generated with bounce elastic slice.When dosage drum rotates forward, elastic slice of beating
Flexible deformation can be generated under the promotion of lug boss, when guide protrusions offset with limited block, lug boss is around bounce bullet
Piece makes elastic slice recovery elastic deformation of beating, so that its be made to spring back sounding, prompts user's dosage to adjust insurance position-limit mechanism and reaches
Maximum dose.
It is the suitable dose for injecting drug, the mistake of entire dosage setting that dosage, which adjusts maximum dose in insurance position-limit mechanism,
Cheng Zhong, user do not need judge whether setting dosage is suitable by watching dosage drum attentively, directly twist dosage drum to maximum
Dosage setting can be completed in axial position, reduces setting difficulty, and the user for facilitating eyesight not good enough uses.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the cross-sectional view that dosage provided by the utility model adjusts insurance position-limit mechanism axial direction；
Fig. 2 is the structural schematic diagram that dosage provided by the utility model adjusts insurance position-limit mechanism；
Fig. 3 is the structural schematic diagram of bounce clutch in Fig. 2；
Fig. 4 is the structural schematic diagram of differential bar in Fig. 2；
Fig. 5 is the cross-sectional view of bounce clutch and the cooperation of differential bar；
Fig. 6 is the structural schematic diagram of Fig. 2 middle dosage cylinder；
Fig. 7 is the structural schematic diagram of drive rod.
Wherein, appended drawing reference of the Fig. 1 into Fig. 6 are as follows:
Button 1, push-button socket 2, dosage drum 3, shell 4, differential bar 5, drive rod 6, bounce clutch 7, push rod 8, driving section
31, helicla flute 32, lug boss 33, recessing groove 34, clutch part 51, guide protrusions 52, guide groove 61, limited block 62, the first spine
Wheel 71, position restriction circle 72, the second ratchet 73, ratchet 74, bounce elastic slice 75, notch section 76.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically
The utility model is described in further detail for embodiment.
Fig. 1 to Fig. 6 is please referred to, Fig. 1 is the section view that dosage provided by the utility model adjusts insurance position-limit mechanism axial direction
Figure；Fig. 2 is the structural schematic diagram that dosage provided by the utility model adjusts insurance position-limit mechanism；Fig. 3 is clutch of beating in Fig. 2
The structural schematic diagram of device；Fig. 4 is the structural schematic diagram of differential bar in Fig. 2；Fig. 5 is the section view of bounce clutch and the cooperation of differential bar
Figure；Fig. 6 is the structural schematic diagram of Fig. 2 middle dosage cylinder；Fig. 7 is the structural schematic diagram of drive rod.
Dosage provided by the utility model adjusts insurance position-limit mechanism and is used in medicine delivery device, medicine delivery device
It can be specially injection pen.As depicted in figs. 1 and 2, dosage adjust insurance position-limit mechanism include shell 4, dosage drum 3, differential bar 5,
Drive rod 6 and push rod 8, above-mentioned five component ecto-entads are set gradually.Dosage adjusts the shared dosage of insurance position-limit mechanism and sets
Fixed and two kinds of working conditions of drug injection, are equipped with helicla flute 32 on the outside of dosage drum 3, the inside of shell 4 equipped with and 32 phase of helicla flute
The guide thread of cooperation, dosage setting process are to rotate forward dosage drum 3, and dosage drum 3 is rotated forward along guide thread, can be produced
Raw axial displacement, to generate distance, the front of dosage drum 3 and shell between making the limiting section in the front and shell 4 of dosage drum 3
The distance between limiting section in 4 is the distance that medical injection procedure middle dosage cylinder 3 moves axially, and is positively correlated with injection dosage.
Differential bar 5 is set in dosage drum 3, and the front of dosage drum 3 is equipped with driving section 31, the front of differential bar 5 be equipped with from
Clutch 7 is beated between driving section 31 and clutch part 51 by conjunction portion 51, and the middle part of bounce clutch 7 is equipped with position restriction circle
72.During dosage setting, dosage drum 3 is moved axially rearward, and 31 pushing position of driving section limits circle 72, position restriction circle 72
Differential bar 5 is pushed, three, which synchronizes, to be moved axially rearward.
Drive rod 6 is set in differential bar 5, and drive rod 6 is cylindrical, and the outside of drive rod 6, which is equipped with, to be axially extended
Guide groove 61, the inside of differential bar 5 are equipped with the guide protrusions 52 to cooperate with guide groove 61.6 front end of drive rod has transmission
Tooth, single-direction transmission between driving cog and ram seat.When dosage drum 3 rotates forward, bounce clutch 7 and poor is pushed axially rearward
The guide protrusions 52 of fast bar 5, differential bar 5 are inserted into the guide groove 61 of drive rod 6, limit of the drive rod 6 in ram seat and driving cog
It can not be rotated under system, therefore differential bar 5 can not also rotate, differential bar 5 is only capable of generating axial movement under the promotion of dosage drum 3.
It is equipped with limited block 62 in guide groove 61 simultaneously, limited block 62 can limit the axial movement distance of differential bar 5.It is convex when being oriented to
Rise 52 with limited block 62 offset when, differential bar 5 can not continue to move backward, and the front end of differential bar 5 limits dosage drum 3
Position, continue to rotate it can not.At this point, dosage, which adjusts insurance position-limit mechanism, reaches maximum dose, maximum dose can be specially 8ml
Or the common injection dosage of the users such as 16ml.
As shown in figure 3, the front of bounce clutch 7 has the first ratchet 71, rear portion has the second ratchet 73, the first ratchet
71 and second ratchet 73 be equipped with bounce elastic slice 75, the two is realized with driving section 31 and clutch part 51 respectively by bounce elastic slice 75
Single direction rotation transmission.When dosage drum 3 rotates forward, can not be driven between the first ratchet 71 and driving section 31, the second ratchet 73 with
Clutch part 51 offsets, so as to prevent bounce clutch 7 from rotating with dosage drum 3.Driving section 31 is equipped with can be with bounce elastic slice 75
Generate the lug boss 33 of single-direction transmission.When dosage drum 3 rotates forward, the bounce elastic slice 75 of the first ratchet 71 can be in lug boss 33
Promotion under generate flexible deformation, when guide protrusions 52 and limited block 62 offset, lug boss 33 is around the first ratchet 71
Bounce elastic slice 75 makes the recovery elastic deformation of elastic slice 75 of beating, so that its be made to spring back sounding, the adjusting insurance of user's dosage is prompted to limit
Position mechanism reaches maximum dose.Lug boss 33 can just also be engaged with bounce elastic slice 75 at this time, and user's promoting button 1 is beated
Elastic slice 75 can rotary drive, completion medicament injection between driving section 31.
In the present embodiment, limited block 62 is equipped in the guide groove 61 of drive rod 6, limited block 62 can limit dosage drum
3 stroke makes maximum dose be equal to the common injection dosage of user to limit the size of maximum dose.Dosage setting
In the process, directly dosage setting will can be completed at the torsion to maximum dose of dosage drum 3 in user.In addition, bounce clutch 7
The first ratchet 71 in be additionally provided with bounce elastic slice 75, bounce elastic slice 75 matched with the lug boss 33 in driving section 31, in dosage
When adjusting insurance position-limit mechanism is adjusted to maximum dose, bounce elastic slice 75 springs back sounding, and user is reminded to have reached maximum dose.
The old man for facilitating eyesight not good enough uses.
The settable bounce elastic slice 75 of first ratchet 71 may also set up multiple bounce elastic slices 75, rotate forward dosage drum 3
During, bounce clutch 7 will not generate rotation, and the lug boss 33 in driving section 31 can cooperate with bounce elastic slice 75, agent
Graduated cylinder 3 often turns over certain angle, and bounce elastic slice 75 generates primary rebound sounding, dosage drum corresponding to a bounce elastic slice 75
The angle of 3 rotations is default angle of circumference.3 forward direction of dosage drum turns over default angle of circumference, and differential bar 5 can produce default axial position
It moves, default axial displacement can be greater than or equal to 5 stroke of differential bar defined by limited block 62.Wherein, preferred scheme is pre-
If axial displacement be equal to limited block 62 limit 5 stroke of differential bar, user rotate forward dosage drum 3, carry out dosage set
In fixed process, bounce elastic slice 75 can generate springs back sounding twice, that is, rebound sounding is primary when starting to set, and completes to return when setting
It is primary to play sounding.When elastic slice 75 of beating springs back sounding, the front end for elastic slice 75 of beating is right around lug boss 33 excessively, elastic slice of beating at this time
75 can be intermeshed with lug boss 33, can be driven on the counter-rotational direction of dosage drum 3；And elastic slice 75 of beating springs back sounding
Before, it can not be meshed, and then can not be driven on the counter-rotational direction of dosage drum 3 with lug boss 33, elastic slice 75 of beating
Can be driven in this direction with lug boss 33 is to carry out the necessary condition of drug injection, thus dosage adjusts insurance limit
Mechanism can not be injected before reaching maximum dose.
In the present embodiment, presets axial displacement and be greater than or equal to 5 stroke of differential bar that limited block 62 limits, set in dosage
In fixed process, if user wants to cancel setting operation, only dosage drum 3 need to reversely be adjusted back.In addition, dosage setting
In the process if user accidentally touches button 1, since driving section 31 can not be engaged with bounce elastic slice 75, drug injection can not be carried out.
Greatly improve the serious forgiveness that dosage adjusts insurance position-limit mechanism operation.
Optionally, the side wall of the first ratchet 71 has the perforative notch section 76 of through-thickness, and elastic slice 75 of beating is along first
The circumferentially extending of ratchet 71, end are fixedly connected with the side of notch section 76, and front end is suspended in notch section 76, elastic slice of beating
75 front ends, which are equipped with, is parallel to the axial ratchet 74 of the first ratchet 71, and the extending radially outwardly along the first ratchet 71 of ratchet 74.It lacks
Oral area 76 can increase the Oscillation Amplitude of bounce elastic slice 75, and the vibration generated during dosage setting is made to be easier to distinguish.
In addition, the thickness of bounce elastic slice 75 is smaller than the thickness of 71 side wall of the first ratchet, increase the elasticity of bounce elastic slice 75
Deflection further increases the amplitude of fluctuation of bounce elastic slice 75.
Optionally, the rear end of clutch part 51 has sliding step surface, rear end face and the sliding step surface phase of clutch 7 of beating
To, it can be achieved that bounce clutch 7 axial limiting.Lug boss 33 is located at the inside of clutch part 51 and is parallel to the axis of clutch part 51
To lug boss 33 extends along the radial of clutch part 51 to its axis direction, and unidirectional pass can be achieved in lug boss 33 and the cooperation of ratchet 74
It is dynamic.
In addition, springing back for convenience of bounce elastic slice 75, increase the Oscillation Amplitude in bounce 75 springback process of elastic slice, clutch part 51
Equipped with recessing groove 34, recessing groove 34 is close to lug boss 33, and during elastic slice 75 of beating is sprung back, ratchet 74 springs into recessing groove 34
In, increase the Oscillation Amplitude of bounce elastic slice 75.
In the present embodiment, the first ratchet 71 is equipped with notch section 76, and clutch part 51 is equipped with recessing groove 34, notch section 76 and resigning
Slot 34 can increase the moving range of bounce elastic slice 75, and then increase the Oscillation Amplitude in bounce 75 springback process of elastic slice, make to jump
The vibration of spring plate 75 is easily recognizable.In addition, the thickness of bounce elastic slice 75 can increase bounce bullet less than the thickness of the first ratchet 71
The elastic deformation amount of piece 75 further increases the Oscillation Amplitude in springback process.
Optionally, it is set in the first ratchet 71 there are two notch section 76, bounce elastic slice 75 is equipped in two notch sections 76, and
Center of circle central symmetry of the bounce elastic slice 75 about the first ratchet 71 in two notch sections 76.During dosage setting, agent
The default angle of circumference that graduated cylinder 3 rotates has corresponded to the default axial displacement of differential bar 5, on the basis of the above embodiments, presets axis
The stroke of differential bar 5 has also been corresponded to displacement.In other words, during dosage setting, dosage drum 3 turns over default angle of circumference i.e.
Achievable dosage setting.Obviously, default angle of circumference is smaller, and dosage setting process is simpler.Certainly, the too small possibility of angle of circumference is preset
Make dosage adjust a possibility that insurance position-limit mechanism fails because of maloperation to become larger.Therefore, the present embodiment sets default angle of circumference
It is set to 180 °.Default angle of circumference can also be set as other angles as needed by certain user.
Correspondingly, settable two lug bosses 33 in the inside of clutch part 51, and circle of two lug bosses 33 about clutch part 51
Heart central symmetry.During clutch 7 of beating rotates, two lug bosses 33 cooperate simultaneously with double bounce spring plate 75, can be promoted back
Vibration and sounding during bullet.
In addition, ratchet 74 includes the first sealed face and the first guide surface for being located at tooth ridge two sides, the first sealed face institute
Plane pass through the center of circle of the first ratchet 71, the first guide surface is sealed along by the direction of tooth root to tooth ridge moving closer to first
Face.When clutch 7 of beating is relatively rotated with differential bar 5, the first guide surface is in contact with the top of lug boss 33, lug boss 33
Tooth ridge is moved to by the tooth root of ratchet 74 along the first guide surface, under the promotion of lug boss 33, bounce elastic slice 75 generates elastic change
Shape.Bounce clutch 7 continues to rotate, and when lug boss 33 is separated with the first sealed face, the front end for elastic slice 75 of beating is substantially radially
Rebound, the first sealed face will not interfere with lug boss 33, hereby it is ensured that springback process is smooth.
Correspondingly, lug boss 33 includes the second sealed face and the second guide surface, the second sealed face and the second guide surface are distinguished
Positioned at the two sides of lug boss 33, the center of circle of the plane Jing Guo clutch part 51 where the second sealed face, the second guide surface along from it is lower to
On direction move closer to the second sealed face.Second sealed face guarantees not send out with lug boss 33 during bounce elastic slice 75 is sprung back
Raw interference, guarantees the smooth of rebound.First guide surface and the second guide surface guarantee that lug boss 33 passes through ratchet 74.
In addition, the rear end face for clutch 7 of beating in the utility model is equipped with the clamping portion axially extended, step surface is slided
Equipped with concave part.Clamping portion and concave part, which are engaged by clamping, realizes the transmitting of rotation, during drug injection, user press by
Button 1 is axially moveable push-button socket 2, and then differential bar 5 is made to be meshed with bounce clutch 7, realizes inside entire regulating mechanism
The transmitting of unitary rotation.Clamping portion and the transmission that concave part cooperates compared with the prior art are more stable.
In the present embodiment, it is equipped with two notch sections 76 in the first ratchet 71, is equipped with a bounce elastic slice in two notch sections 76
75, by increasing the quantity of bounce elastic slice 75, the operation difficulty of dosage setting can be reduced.In addition, ratchet 74 is sealed equipped with first
Face and the first guide surface, lug boss 33 are equipped with the second sealed face and the second guide surface, and the first guide surface and the second guide surface can be with
Guarantee that lug boss 33 passes through ratchet 74, the first sealed face and the second sealed face can guarantee during rebound ratchet 74 not with
Lug boss 33 interferes, and then guarantees the smooth of springback process.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Insurance position-limit mechanism is adjusted to medicine delivery device provided by the utility model and its dosage above to have carried out in detail
It is thin to introduce.Specific case used herein is expounded the principles of the present invention and embodiment, above embodiments
Explanation be merely used to help understand the method and its core concept of the utility model.It should be pointed out that for the art
For those of ordinary skill, without departing from the principle of this utility model, several change can also be carried out to the utility model
Into and modification, modifications and modifications also fall within the protection scope of the claims of the utility model.
Claims (10)
1. a kind of dosage adjusts insurance position-limit mechanism, it is used for medicine delivery device, which is characterized in that including shell (4), drive rod
(6), differential bar (5), dosage drum (3) and bounce clutch (7), the dosage drum (3) are set in the shell (4), the two
Between there is guide thread, the differential bar (5) is set in the dosage drum (3), and dosage drum (3) front is equipped with driving section
(31), differential bar (5) front is equipped with clutch part (51), and the bounce clutch (7) is located at the driving section (31) and institute
It states between clutch part (51), and its front has the first ratchet (71) to be driven with the driving section (31) single direction rotation,
The rear part has the second ratchet (73) to be driven with the clutch part (51) single direction rotation, and the dosage drum (3) is positive to be turned
When dynamic, second ratchet (73) and the clutch part (51) offset, to prevent the bounce clutch (7) with dosage drum (3)
Rotation, relative motion between first ratchet (71) and the driving section (31), first ratchet (71) are equipped with bounce elastic slice
(75), the driving section (31) is equipped with the lug boss (33) that single-direction transmission can be generated with bounce elastic slice (75), the transmission
Bar (6) is set in the differential bar (5), and the outside of the drive rod (6) is equipped with the guide groove (61) axially extended, described
The inside of differential bar (5) is equipped with to the guide protrusions (52) that cooperate with the guide groove (61), and the differential bar (5) can be
Guide groove (61) described in the drive lower edge of the dosage drum (3) is mobile, is equipped in the guide groove (61) to limit the difference
The limited block (62) of fast bar (5) axial displacement, the bounce elastic slice (75) can produce under the promotion of the lug boss (33)
Raw flexible deformation, when the guide protrusions (52) and the limited block (62) offset, the bounce elastic slice (75) restores bullet
Property deforms and springs back sounding.
2. dosage according to claim 1 adjusts insurance position-limit mechanism, which is characterized in that the side of first ratchet (71)
Wall has the notch section (76) in impenetrating thickness direction, and the end of bounce elastic slice (75) and the side of the notch section (76) are solid
Fixed connection, front end are suspended in the notch section (76), and bounce elastic slice (75) front end is equipped with the spine extended radially outward
Tooth (74).
3. dosage according to claim 2 adjusts insurance position-limit mechanism, which is characterized in that the bounce elastic slice (75) is corresponding
The angle of dosage drum (3) rotation is default angle of circumference, and the dosage drum (3) turns over corresponding when the default angle of circumference
The stroke of the differential bar (5) is greater than or equal to the stroke of the differential bar (5) defined by the block.
4. dosage according to claim 3 adjusts insurance position-limit mechanism, which is characterized in that set in first ratchet (71)
There are two notch sections (76), the bounce elastic slice (75), the two bounce elastic slices are equipped in two notch sections (76)
(75) center of circle central symmetry about first ratchet (71).
5. dosage according to claim 4 adjusts insurance position-limit mechanism, which is characterized in that the lug boss (33) is set to
The inside of the clutch part (51) and radially inwardly extending, the clutch part (51) are equipped with to accommodate the ratchet (74)
Recessing groove (34), the recessing groove (34) is close to the lug boss (33).
6. dosage according to claim 5 adjusts insurance position-limit mechanism, which is characterized in that the ratchet (74) is two,
And the center of circle central symmetry about the clutch part (51).
7. dosage according to claim 6 adjusts insurance position-limit mechanism, which is characterized in that the ratchet (74) includes first
Sealed face and the first guide surface, when the bounce clutch (7) and the differential bar (5) relative rotation, first guiding
Face is contacted with the lug boss (33), and the first sealed face is parallel to the radial direction of first ratchet (71), and described first leads
The described first sealed face is moved closer to along direction from bottom to top to face.
8. dosage according to claim 7 adjusts insurance position-limit mechanism, which is characterized in that the lug boss (33) includes the
Two sealed faces and the second guide surface, the second sealed face are parallel to the radial direction of the clutch part (51), second guide surface
The described second sealed face is moved closer to along direction from bottom to top.
9. dosage according to claim 8 adjusts insurance position-limit mechanism, which is characterized in that the thickness of bounce elastic slice (75)
Degree is less than the thickness of the first ratchet (71) side wall.
10. adjusting insurance position-limit mechanism to dosage described in 9 any one according to claim 1, which is characterized in that the clutch
Portion (51) rear end has to the sliding step surface with bounce clutch (7) the rear end face cooperation, the bounce clutch (7)
Rear end face be equipped with the clamping portion that axially extends, the sliding step surface is equipped with recessed to be engaged by clamping with the clamping portion
Groove portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821676174.XU CN209500444U (en) | 2018-10-16 | 2018-10-16 | A kind of dosage adjusting insurance position-limit mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821676174.XU CN209500444U (en) | 2018-10-16 | 2018-10-16 | A kind of dosage adjusting insurance position-limit mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209500444U true CN209500444U (en) | 2019-10-18 |
Family
ID=68192302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821676174.XU Active CN209500444U (en) | 2018-10-16 | 2018-10-16 | A kind of dosage adjusting insurance position-limit mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209500444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172948A (en) * | 2018-10-16 | 2019-01-11 | 甘肃成纪生物药业有限公司 | A kind of dosage adjusting insurance position-limit mechanism |
-
2018
- 2018-10-16 CN CN201821676174.XU patent/CN209500444U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109172948A (en) * | 2018-10-16 | 2019-01-11 | 甘肃成纪生物药业有限公司 | A kind of dosage adjusting insurance position-limit mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4979686B2 (en) | Injection device | |
| US9956351B2 (en) | Injection device without a gearing | |
| CN109172948A (en) | A kind of dosage adjusting insurance position-limit mechanism | |
| JP4970286B2 (en) | Injection device | |
| CN103041476B (en) | Adjustable dosage syringe | |
| US20050209570A1 (en) | Injection device | |
| JP2018011970A (en) | Device for injecting adjustable dose liquid medicine | |
| US20180021522A1 (en) | Medical injection device | |
| CN108607136A (en) | Calibrated shot pen with hiding injection needle | |
| CN109107003B (en) | Novel injection pen | |
| JP7167308B2 (en) | Dose detection system for drug delivery device | |
| CN209500444U (en) | A kind of dosage adjusting insurance position-limit mechanism | |
| JP2018512963A (en) | Driving the injection device with two gear patterns | |
| CN106110443A (en) | A kind of syringe | |
| CN109663177A (en) | The end-point control method and its syringe of syringe | |
| CN109125858A (en) | Driving means and syringe | |
| CN107050575B (en) | Pen type injector capable of being repeatedly used | |
| CN211068478U (en) | Medical injection device with replaceable medicine bottle | |
| CN209548479U (en) | A kind of novel injection pen | |
| CN110237365B (en) | Medical injection device capable of replacing medicine bottle | |
| CN110237366B (en) | Simple medical injection device with replaceable medicine bottle | |
| CN211912386U (en) | Simple medical injection device with replaceable medicine bottle | |
| CN113274586A (en) | Syringe capable of quantitatively outputting fluid | |
| CN209253830U (en) | A kind of transmission clutch of injection pen | |
| CN209548480U (en) | A kind of pre-filled syringe pen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |