CN209154759U - Automatically inject the locking mechanism and automatic injection pen of pen - Google Patents
Automatically inject the locking mechanism and automatic injection pen of pen Download PDFInfo
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- CN209154759U CN209154759U CN201821430241.XU CN201821430241U CN209154759U CN 209154759 U CN209154759 U CN 209154759U CN 201821430241 U CN201821430241 U CN 201821430241U CN 209154759 U CN209154759 U CN 209154759U
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- sleeve
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- shell
- syringe
- automatic injection
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Abstract
The purpose of the application is to provide a kind of locking mechanism for automatically injecting pen and automatic injection pen, mainly by locking mechanism shell, be movably disposed at the intracorporal triggering sleeve of shell, in triggering sleeve and be equipped with the syringe of syringe needle, be set between triggering sleeve and shell and limit sleeve for being connected together with shell etc. is constituted.Limit sleeve is used to carry out locking to it after triggering sleeve resets.Wherein, limit sleeve is equipped with locking part, and triggering sleeve is equipped with and the mutually matched locking position of locking part.Compared with prior art, the application prevents the syringe needle of syringe to be exposed from the shell of automatic injection pen in the case where not using nut cap.
Description
Technical field
The utility model relates to a kind of medical injection pen more particularly to a kind of locking mechanisms for automatically injecting pen and automatic note
Penetrate pen.
Background technique
Pen, which is automatically injected, as a kind of common medical instrument can substitute manually inserting needle, injection etc., with accurate
Dosage needed for squeezing out.
In existing automatic injection pen, as patent application document CN10439491B is disclosed, pass through actuating sleeve
In the intracorporal movement of lower case, cause the movement of control sleeve, so that syringe can move in lower case, to make
The syringe needle for obtaining syringe is exposed in lower case, to be pierced into the internal of user.Due in order to avoid syringe needle is before use
Or after use, cause the situation for stabbing user due to surprisingly syringe needle being caused to be exposed from lower case, usually using lid
Syringe needle in lower case is isolated from the outside by cover, to avoid there are said circumstances, however, in actual use, user is very
It is easy to appear the generation for abandoning nut cap and causing above-mentioned phenomenon.
Utility model content
The shortcomings that for the above-mentioned prior art or deficiency, the technical problem to be solved by the present invention is to provide a kind of automatic
Injection pen and automatic injection pen, do not use nut cap in the case where, prevented also from syringe syringe needle from automatic injection pen shell
In be exposed.
In order to solve the above technical problems, the utility model provides a kind of locking mechanism for automatically injecting pen, comprising: shell
Body is movably disposed at the intracorporal triggering sleeve of the shell, positioned at the syringe triggered in sleeve and be equipped with syringe needle；
It is set to the limit sleeve being connected together between the triggering sleeve and the shell and with the shell, in institute
It states after triggering sleeve resets and locking is carried out to it；
Wherein, the limit sleeve is equipped with locking part, and the triggering sleeve is equipped with and the mutually matched lock of the locking part
Stop bit.
Further, preferably, the hollow-out parts that the outer wall of the limit sleeve at least part is formed by hollow out；The lock
Stop includes: the limit plate being arranged in the hollow-out parts, and one end of the limit plate is connected with the limit sleeve, and another
End is connected by interconnecting piece with the limit sleeve；The locking part further include: be set to the inside of the limit plate and with it is described
The lug boss that the inner wall of shell is adjacent to, and it is set to the dimpling portion in the outside of the limit plate；The locking position is to be provided with
Lock groove on the triggering sleeve；
When the dimpling portion is broken the interconnecting piece because of the triggering sleeve extruding, and in triggering sleeve reset
Afterwards, it is inserted by the rebound effect of the lug boss in the lock groove of the triggering sleeve.
Further, preferably, the lug boss is arc convex, and before interconnecting piece fracture, the protrusion
It is interference fit between portion and the inner wall of the shell.
Further, preferably, the dimpling portion is connected with the interconnecting piece, and the width of the interconnecting piece is described in
The radial direction of limit sleeve is gradually reduced.
Further, preferably, the triggering sleeve includes: trigger unit and the triggering with the lock groove
Portion connects and has the ring sleeve portion of outlet end；The outer wall of the trigger unit is equipped with axially extending along its and forms sliding company with shell
The raised line connect.
Further, preferably, the limit sleeve includes: the annular sheet equipped with the lug boss and the dimpling portion
Body, the clamping portion being connected with the ring body；The clamping portion include: at least two with the central axis of the limit sleeve be pair
Claim axial symmetry setting and the bar shape for being used to be connected together with the shell, the bending body being connected with the bar shape；The touching
The radially outer protrusion in the outer wall in hair portion at least part extends to form limiting section；Wherein, bayonet is offered on the triggering sleeve,
For passing through the bending body.
Further, preferably, the automatic injection pen further include: the metal elastic in the triggering sleeve is set
Spring, the opposite end of the metal spring support the inner edge surface of the bending body and the outlet end respectively.
Present invention also provides a kind of automatic injection pen, the locking mechanism including above-mentioned automatic injection pen.
Further, preferably, the shell includes: upper housing and lower case；The automatic injection pen further include: use
In the piston rod for squeezing the syringe；It is arranged drive sleeve on the piston rod；Cutting ferrule is triggered, the drive sleeve is set in
On, and be slidably connected along the axial direction of the upper housing and the upper housing, for being in clamping connection the piston rod；The triggering set
Cylinder, is set to inside the lower case, and be slidably connected along the axial direction of the lower case with it, for pushing the triggering cutting ferrule
Along the axial movement of the upper housing, so that after the triggering cutting ferrule and piston rod disengaging are in clamping connection, by described
Drive sleeve pushes the piston rod to squeeze the syringe；The upper housing is rotatablely connected in its circumferential direction with the lower case,
Can be led to when the triggering cutting ferrule being made to be located at open position by the relative rotation between the upper housing and the lower case
It crosses the triggering sleeve and pushes the triggering cutting ferrule.
Further, preferably, the drive sleeve includes: press section, the sleeve part being connected with the press section, opens
The opening being located on the sleeve part, the elastic card buckle for being arranged on the sleeve part and being matched with the triggering cutting ferrule；
The elastic card buckle protrudes into inside when being squeezed by the triggering cutting ferrule, by the outside of the opening, and with the piston rod
Holding is in clamping connection, and after the extruding for losing the triggering cutting ferrule, it is in clamping connection with piston rod disengaging.
Further, preferably, the tail end of the syringe is fixed in the upper housing or the lower case, described
The head end of syringe is sheathed in the triggering sleeve；The opposite end of the triggering sleeve is respectively to be used to trigger the triggering
The triggering end of cutting ferrule and outlet end for discharging the syringe needle being connected with the syringe；The triggering sleeve has part by hollow out shape
At avoid area, and it is described avoid area and be axially facing the outlet end along it from the triggering end extending, for by described
The tail end of syringe；Wherein, the area that avoids constitutes the lock groove.
Compared with prior art, due to the application automatic injection pen locking mechanism in due to triggering sleeve and shell it
Between be equipped with one can to triggering sleeve reset carry out locking limit sleeve, thus when triggering sleeve be used for the first time in user
When, by the cooperation of locking part and locking position, triggering sleeve can be moved, so that the syringe needle of syringe is exposed from triggering sleeve
Come, the internal of user can be pierced into, and after the completion of injection, so that after triggering sleeve resets, it can be by locking part and locking
The cooperation of position carries out locking to triggering sleeve, so as to avoid syringe needle from exposing when not in use in the case where not using nut cap
The phenomenon that outside easily causes accidental injury.
Detailed description of the invention
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon:
Fig. 1: the structural schematic diagram of pen when in use is automatically injected in the utility model first embodiment；
Fig. 2: the diagrammatic cross-section of the locking mechanism of pen is automatically injected in the utility model first embodiment；
Fig. 3: the external structure schematic diagram of limit sleeve in the utility model first embodiment；
Fig. 4: the schematic diagram of internal structure of limit sleeve in the utility model first embodiment；
Fig. 5: the structural schematic diagram of sleeve is triggered in the utility model first embodiment；
Fig. 6: the explosive view of pen is automatically injected in the utility model second embodiment；
Fig. 7: pen outside schematic diagram when not in use is automatically injected in the utility model second embodiment；
The cross-sectional view of Section A-A in Fig. 8: Fig. 7；
The cross-sectional view of section B-B in Fig. 9: Fig. 7；
Figure 10: the structural schematic diagram of cutting ferrule is triggered in the utility model second embodiment；
Figure 11: the diagrammatic cross-section of upper housing in the utility model second embodiment；
Figure 12: the structural schematic diagram of sleeve is triggered in the utility model second embodiment；
Figure 13: the structural schematic diagram of one end of lower case and upper casing mates in the utility model second embodiment；
Figure 14: the structural schematic diagram of the outlet end of lower case in the utility model second embodiment；
Figure 15: the schematic diagram of the section structure of lower case in the utility model second embodiment；
Description of symbols: upper housing 1；Drive sleeve 2；Piston rod 3；Piston 4；Syringe needle 5；Lower case 7；Trigger cutting ferrule 8；
Compressed spring 9；Syringe 10；Insertion section 11；Trigger sleeve 12；Limit sleeve 13；Syringe needle 14；Metal spring 16；First baffle 18；The
Two baffles 19；Limit card slot 25；Hollow cavity 31；Tail end 100；Holding section 101；Locating slot 102；Buckle 103；First detent
104；Second detent 105；Press section 201；Sleeve part 202；Elastic card buckle 23；Protruding portion 203；Press gland 212；Incude core
Piece 213；Guide sleeve 701；Guide plate 702；Pilot hole 703；Ontology 801；Groove body 802；Sliding slot 803；Side wall 804；Axis hole 805；
Trigger unit 121；Ring sleeve portion 122；Raised line 123；Convex ribs 124；Avoid area 125；Bayonet 126；Limiting section 1211；Limit plate 130；It is convex
Play portion 131；Dimpling portion 132；Interconnecting piece 133；Clamping portion 134；Bar shape 1341；Bending body 1342；Bar shaped convex ribs 1343.
Specific embodiment
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
As shown in Figures 1 to 5, the first embodiment of the utility model provides a kind of locking mechanism for automatically injecting pen,
Comprising: shell, be movably disposed at the intracorporal triggering sleeve 12 of shell, in triggering sleeve 12 and it is equipped with the syringe of syringe needle
10, it is set to the limit sleeve 13 etc. being connected together between triggering sleeve 12 and shell and with lower case.
Wherein, limit sleeve 13 is used to carry out it locking after triggering sleeve 12 resets, also, limit sleeve 13 is equipped with lock
Stop, triggering sleeve 12 are equipped with and the mutually matched locking position of locking part.
As shown in the above, triggering sleeve 12 can be reset into due to being equipped with one between triggering sleeve 12 and shell
The limit sleeve 13 of row locking, thus when triggering sleeve 12 in user for the first time in use, by the cooperation of locking part and locking position,
Triggering sleeve 12 can be moved, so that the syringe needle of syringe 10 is exposed from triggering sleeve 12, the body of user can be pierced into
It is interior, and after the completion of injection, so that after triggering sleeve 12 resets, it can be by the cooperation of locking part and locking position to triggering sleeve 12
Carry out locking, so as to avoid syringe needle 14 be exposed to when not in use it is external and the phenomenon that easily cause accidental injury.
It should be noted that as shown in Figure 1, for convenience of description, the shell in the present embodiment is mainly by upper housing 1 and lower casing
Body 7 is constituted, and limit sleeve 13 is connected together with lower case 7, and explains as example, specifically defined without making.And in reality
In the application of border, limit sleeve 13 can also be connected together according to actual needs with upper housing 1 or upper housing 1 and lower case 7 by one at
The shell of type is constituted.
It is further used as preferably, as shown in Fig. 3, Fig. 4 and Fig. 5, the outer wall of limit sleeve 13 at least portion in the present embodiment
Divide the hollow-out parts formed by hollow out；Locking part includes: the limit plate 130 being arranged in hollow-out parts, and one end of limit plate 130 with
Limit sleeve 13 is connected, and the other end is connected by interconnecting piece 133 with the ontology of limit sleeve 13.Locking part further include: be set to limit
The inside of position plate 130 and the lug boss 131 being adjacent to the inner wall of shell, and it is set to the dimpling portion in the outside of the limit plate
132；Above-mentioned locking position is the lock groove 125 being provided on triggering sleeve 12.
When dimpling portion 132 because trigger sleeve 12 squeeze due to make interconnecting piece 133 be broken, and triggering sleeve 12 reset after, lead to
It crosses in the rebound effect insertion lock groove 125 of lug boss 131.
It follows that, since dimpling portion 132 is smaller, being triggered when lug boss 131 is compressed by the inner wall of lower case
When sleeve 12 moves up in shell for the first time, interconnecting piece 133 will not can be made under its impact to the biggish blocking of generation
Fracture, and further expression lobes portion 131, thus after automatically injecting pen completion injection, i.e., after triggering sleeve 12 resets, protrusion
Portion 131 can be inserted into the lock groove of triggering sleeve 12 due to not limited by interconnecting piece 133 under the rebound effect of itself, into
And triggering sleeve 12 is pushed again up, triggering sleeve 12 is limited, therefore pass through the structure of above-mentioned limit sleeve 13
Design, is skillfully constructed, structure is simple, reduces and manufactures cost, and is easily assembled and dismantles.
Furthermore, it is necessary to explanation, the lock groove 125 in the present embodiment is not limited to trough body structure shown in Fig. 5, can be with
For other kinds of trough body structure.
Also, above-mentioned locking part and locking position can also be other kinds of structure, if locking part is to set on limit sleeve
There are wedged block, and the width of wedged block being gradually increased (such as towards the direction of the tail end of syringe) axially upwards along shell, and locks
Stop bit is to trigger sleeve 12 to be equipped with the wedge fixture block matched, and the width of wedge fixture block gradually subtracting axially upwards along shell
It is small, therefore limit sleeve 13 when being pushed axially upwards, is generated in triggering sleeve 12 along shell between wedged block and wedge fixture block
Mutually sliding, so that shell and limit sleeve or triggering sleeve radially generate extension along shell, so that wedge fixture block can
It smoothly slides above wedged block, so that syringe 10 and syringe needle 14 are mobile, and slides into the outside of automatic injection pen, be convenient for
In subsequent piercing user's body.And after automatically injecting pen reset, due to bottom end (the i.e. wedge fixture block wider one of wedge fixture block
End) top (i.e. wider one end of wedged block) that supports wedged block, therefore, so that Impact direction each other is perpendicular to
In shell axial direction, not it is easier that shell and limit sleeve or triggering sleeve radially generate extension along shell, to realize locking.Therefore
The present embodiment only enumerate two kinds of structures limit sleeve and triggering sleeve and corresponding locking part and locking position for explain, it is unlimited
In it will be appreciated by those skilled in the art that other can apply on limit sleeve and triggering sleeve, realize to triggering sleeve multiple
The structure of locking is carried out when position.
Further, preferably, as described in fig. 3 and fig. 4, above-mentioned lug boss 131 can be arc convex, and connect
It is interference fit between lug boss 131 and the inner wall of shell before portion 133 is broken.With by arc convex reduce lug boss 131 with
Contact area between the outer wall of lower case 7 so that triggering sleeve 12 after the reset, lug boss 131 can quickly rebound to
Triggering sleeve 12 is avoided in area 125, to form the locking to triggering sleeve 12.
Further, preferably, dimpling portion 132 is connected with interconnecting piece 133, and the width of interconnecting piece 133 is along limit sleeve
13 radial direction is gradually reduced, with while guaranteeing the bonding strength between limit plate 130 and 13 ontology of limit sleeve, so that connection
Portion 133 is easy to be broken after by the impact for meeting design requirement.
In addition, avoiding syringe needle 14 by two to the maximum extent to enhance the position-limiting action of 13 pairs of limit sleeve triggering sleeves 12
Secondary exposure, lug boss 131 and dimpling portion 132 in the present embodiment can be two or more, and be to trigger the axis of sleeve 12
Setting substantially symmetrical about its central axis.It should be noted that the present embodiment is only explained so that lug boss 131 and dimpling portion 132 are two as an example.
In addition, should be it is understood that the foot that the size in the dimpling portion 132 in the present embodiment needs to be arranged for those skilled in the art
It is enough small, about between several millimeters, so that triggering sleeve 12 will not constitute obstruction when being triggered for the first time to it.
In detail, in the present embodiment, as further preferably, above-mentioned triggering sleeve 12 is mainly by with lock groove
125 trigger unit 121, the ring sleeve portion 122 for being connect with trigger unit 121 and there is outlet end；The outer wall of trigger unit 121 is equipped with along it
Raised line 123 etc. that is axially extending and being slidably connected with shell formation is constituted.So that triggering sleeve 12 can with realized in shell
While being slidably connected, by the protective effect of ring sleeve portion 122, prevent syringe needle 14 stretched out from the outlet end of ring sleeve portion 122 and
It is exposed to the outside of automatic injection pen.
Correspondingly, as further preferably, above-mentioned limit sleeve 13 can be by being equipped with lug boss 131 and dimpling portion 132
Ring body, the clamping portion 134 being connected with ring body etc. are constituted.Wherein, clamping portion 134 includes: at least two with limit sleeve
What 13 central axis was connected for symmetry axis bar shape 1341 arranged symmetrically and for being connected together with shell, with bar shape 1341
Bending body 1342.Wherein, the present embodiment is only explained by taking two bar shapes 1341 and bending body 1342 as an example, and in practical application
In, it can also be other numbers, such as three, four other numbers, the present embodiment does not make this specifically to limit and say
It is bright.
As shown in figure 5, the radially outer protrusion in the outer wall of above-mentioned trigger unit 121 at least part extends to form limiting section
1211；Wherein, it triggers on sleeve 12 and offers bayonet 126, for across bending body 1342.To realize limit sleeve 13 in shell
On while be fixedly connected, position-limiting action is played in the movement travel for triggering sleeves 12 by 1342 pairs of bending body, prevents triggering from covering
Cylinder 12 is detached from from shell, lower case 7 as shown in Figure 1.
In addition, with this configuration, realizing limit sleeve 13 and triggering the connection between sleeve 12, so that in lower case 7 not
It is slidably connected with the formation of raised line 123 by way of opening up sliding groove with triggering sleeve 12,13 He of limit sleeve can also be followed
Lower case 7 rotates together with, and the sliding axial along lower case 7 to triggering sleeve 12 is realized by the length of control bayonet 126
The control of stroke is slidably connected to realize.Herein it is noted that the present embodiment is by convex for the slip connection mode
Mutual cooperation or raised line 123 and convex ribs 124 between item 123 and the sliding groove being provided in lower case 7 in lower case 7 and
Limit cooperation between limit plate 130, or by the connection of limit sleeve 13 with and combinations thereof come what is realized, do not make specific
Restriction and explanation.
In addition, as shown in figure 4, the outer wall of the bar shape of the present embodiment is equipped with bar shaped convex ribs 1343, for insertion under
In the groove body (not indicating in figure) opened up on shell 7, realization is connected together.
It is further used as preferably, as shown in Fig. 2, automatically injecting the locking mechanism of pen in the present embodiment further include: setting
Metal spring 16 in triggering sleeve 12, the opposite end of metal spring 16 support the interior of bending body 1342 and outlet end respectively
Edge face.So that automatic injection pen, after the completion of injection, triggering sleeve 12 can reply under the rebound effect of metal spring 16
To initial position, and syringe needle 14 is covered by ring sleeve portion 122, accidentally touches needle to avoid there is user in subsequent use process
First 14 the phenomenon that.Meanwhile being designed by the bending of bending body 1342, it can be covered convenient for metal spring 16 by limit sleeve 13 and triggering
After cylinder 12 carries out integrated assembling, it is inserted into from one end that lower case 7 is used to connect upper housing 1, convenient for automatically injecting the assembly of pen.
Present invention also provides a kind of automatic injection pen, the locking mechanism including the automatic injection pen in above-described embodiment.
With reference to above-mentioned example content it is found that due to triggering sleeve 12 and shell between be equipped with one can to triggering sleeve 12
The limit sleeve 13 for carrying out locking is resetted, thus works as triggering sleeve 12 in user for the first time in use, passing through locking part and locking position
Cooperation, can move triggering sleeve 12 so that the syringe needle of syringe 10 from triggering sleeve 12 in be exposed, use can be pierced into
Person's is internal, and after the completion of injection, so that after triggering sleeve 12 resets, it can be by the cooperation of locking part and locking position to triggering
Sleeve 12 carries out locking, so as to avoid syringe needle 14 be exposed to when not in use it is external and the phenomenon that easily cause accidental injury.
As a further preference, the automatic injection pen as shown in Fig. 6 to Figure 15, in the present embodiment further include: for squeezing
The piston rod 3 of 10 inner space of pressing cylinder is arranged with drive sleeve 2, triggering cutting ferrule 8 of piston rod 3 etc..
Wherein, the triggering cutting ferrule 8 in above-described embodiment, is set in drive sleeve 2, and along the axial direction of upper housing 1 with it is upper
Shell 1 is slidably connected, for being in clamping connection piston rod 3.
Sleeve 12 is triggered, is set to inside lower case 7, and be slidably connected along the axial direction of lower case 7 with it, for pushing touching
Hair fastener set 8 passes through actuating sleeve so that triggering cutting ferrule 8 and piston rod 3 are detached from after being in clamping connection along the axial movement of upper housing 1
Cylinder 2 pushes piston rod 3 to squeeze syringe 10.
Upper housing 1 is rotatablely connected in its circumferential direction with lower case 7, to pass through opposite turn between upper housing 1 and lower case 7
It is dynamic, when triggering cutting ferrule 8 being made to be located at open position, triggering sleeve 12 can be passed through and push triggering cutting ferrule 8.
The application is slidably connected to upper housing 1 due to using triggering cutting ferrule 8, and blocks with the piston rod 3 in drive sleeve 2
It is tightly connected, and triggering sleeve 12 is set to 7 inside of lower case and is slidably matched with it, while between upper housing 1 and lower case 7
The structure being rotatablely connected in the circumferential direction of upper housing 1, therefore during use, user can by the rotation to upper housing 1,
So that triggering cutting ferrule 8 turns to 12 top of triggering sleeve to be located at open position, or pass through the rotation to lower case 7, band
Dynamic triggering cutting ferrule 8 turns to 12 lower section of triggering sleeve, so that triggering cutting ferrule 8 is located at open position, as in Fig. 2 on upper housing
Mark key 106 started turning from the position with mark 107 face of key in lower case 7, until upper housing on mark key 108
When rotation is with mark 107 face of key, the location of triggering cutting ferrule 8, and then by pushing triggering sleeve 12 along the axis of lower case 7
It to movement, then pushes and triggers cutting ferrule 8, and to trigger cutting ferrule 8 along the axial movement of upper housing 1, until triggering cutting ferrule 8 and living
After the disengaging of stopper rod 3 is in clamping connection, user can make drive sleeve 2 that piston rod 3 be pushed to squeeze syringe 10 by modes such as pressings,
It realizes the injection of medicament in syringe 10, simplifies the internal structure of automatic injection pen, reduce production cost.
Specifically, as shown in figure 11, the inner wall of the upper housing 1 in the present embodiment offers locating slot 102 along its circumferential direction；
As shown in figure 8, lower case 7 is equipped with the insertion section 11 of cooperation insertion locating slot 102.To pass through locating slot 102 and insertion section 11
Between mutual cooperation, while facilitating upper housing 1 and lower case 7 to assemble, so that can be produced between upper housing 1 and lower case 7
It is raw to relatively rotate.
It is further used as preferably, as shown in figure 11, the first detent 104 can be also equipped in the present embodiment locating slot 102
With the second detent 105.As shown in figure 9, insertion section 11 is turned in locating slot 102 when contacting with the first detent 104, touching
Hair net cylinder 12 is located at lock position, i.e. the position of mark key 106 in Fig. 2 on upper housing and mark 107 face of key in lower case 7
Set, and turn to contacted with the second detent 105 when, i.e., on upper housing 1 mark key 108 and identify 107 face of key position
When setting, triggering sleeve 12 is located at open position.To facilitate user in realization between shell 1 and lower case 7 while locking
The unlock of syringe 10 is operated.
It is noted that the first detent 104 and the second detent 105 in the present embodiment are preferably locating slot 102
In protrusion, it is more preferred to, the protrusion be elastic bumps.
As shown in fig. 6, the drive sleeve 2 in the present embodiment is mainly by press section 201, the set being connected with press section 201
Canister portion 202, the opening being provided on sleeve part 202, the elastic card for being arranged on sleeve part 202 and being matched with triggering cutting ferrule 8
Buckles 23 etc. are constituted.
It is found that elastic card buckle 23 is protruded into when the cutting ferrule 8 that is triggered is squeezed by the outside being open as shown in Fig. 9 to Figure 15
Inside, and be in clamping connection with the holding of piston rod 3, and after the extruding for losing triggering cutting ferrule 8, it is in clamping connection with the disengaging of piston rod 3.
To being in clamping connection by elastic card buckle 23 and piston rod 3, realization is to the locking of piston rod 3, so that drive sleeve 2
It can not push piston rod 3 to 10 Inner extrusion of syringe under external force, trigger actuating sleeve because of operation error to avoid user
The phenomenon that cylinder 2, also, when user needs to inject, it can be when triggering cutting ferrule 8 be located at open position, by pushing up triggering
The operation of the unlock to piston rod 3 can be realized in promotion of the modes such as sleeve 12 to triggering cutting ferrule 8.
It is further preferred that as shown in figure 9, drive sleeve 2 further include: along the protruding portion of sleeve part 202 being axially arranged
203, for making drive sleeve 2 and upper housing 1 be connected together and can be produced relative sliding along the axial direction of upper housing 1.It is driven with facilitating
Positioning and assembly between moving sleeve 2 and upper housing 1.
It is further preferred that press section 201 is connected together with upper housing 1, as shown in through Fig. 5, by setting
Set on upper housing 1 buckle 103 and press section 201 on the card slot (not identified in figure) that opens up fasten to connect and realize；It is living
The inside of stopper rod 3 is hollow cavity 31, and the internal sleeve of hollow cavity 31 is equipped with compressed spring 9, and opposite the two of compressed spring 9
End supports the top of drive sleeve 2 and the bottom of hollow cavity respectively.So that piston rod 3 and drive sleeve 2 are in compressed spring 9
Elastic reaction under keep preferably mutually supporting, to pass through the rebound effect of compressed spring 9 after piston rod 3 is unlocked
Injection of the piston rod 3 in syringe 10 is pushed, and then realizes automatic injection, meets the needs of disposable full-automatic injecting.In addition,
By being connected together between press section 201 and upper housing 1, it can prevent drive sleeve 2 from assembling in compressed spring 9 in rebound
Occurs the automatic injection for sliding and influencing piston rod 3 afterwards.
It is noted that in order to meet the assembly demand in practical application, in the present embodiment, elastic card buckle 23 is at least
It is two, and consistent with the open amount opened up.
As it is further preferred that elastic card buckle 23 and opening in the present embodiment are two, and with actuating sleeve
The central axes of cylinder 2 are symmetrical arranged for line of symmetry, to avoid piston rod 3 during being in clamping connection with elastic card buckle 23, out
The phenomenon that now tilting, to guarantee that axial direction of the piston rod 3 under the action of compressed spring 9 along syringe 10 steadily moves.
It is further used as preferably, elastic card buckle 23 includes: positioned at open outside and the elasticity that connect with drive sleeve 2
The protrusion of ontology, the neck for being arranged on elastic body and being used to support piston rod 3.
As shown in Figure 10, the triggering cutting ferrule 8 in the present embodiment can be by offering the sleeve part for passing through drive sleeve 2
The ontology 801 of 202 axis hole 805, the sliding slot 803 being provided on the side wall 804 of ontology 801 etc. are constituted.Wherein, upper housing 1
Inner wall is axially arranged with the holding section 101 for the sliding slot 803 that is slidably connected along it.So that triggering cutting ferrule 8 is in the sleeve 12 that is triggered
It, can be along the axial smooth sliding of upper housing 1 when promotion.Due to the simple and ingenious structure of the triggering cutting ferrule 8, live in preferable realize
While 3 locking of stopper rod, the production cost of triggering cutting ferrule 8 is reduced.
In addition, the inner wall of the axis hole 805 of the triggering cutting ferrule 8 offers groove body 802 it is further preferred that as shown in Figure 10,
And the depth of groove body 802 being inwardly gradually reduced along the axial of axis hole 805 by the end face of axis hole 805 so that triggering cutting ferrule 8 with drive
When moving sleeve 2 assembles, there is stuck phenomenon.
As shown in Figure 8 and Figure 9, as preferred mode, the tail end 100 of syringe 10 is fixed on upper housing 1, syringe 10
Head end be sheathed on triggering sleeve 12 in.
Also, as shown in figure 12, triggering sleeve 12 opposite end be respectively be used to trigger triggering cutting ferrule 8 triggering end and
For discharging the outlet end for the syringe needle 14 being connected with syringe 10；Meanwhile triggering sleeve 12 has part to avoid area by what hollow out was formed,
And avoid area and be axially facing outlet end extension along it from triggering end, with the tail end 100 for passing through syringe 10.Wherein, this implementation
The lock groove avoided in the composition above-described embodiment of area 125 in example.So that when triggering cutting ferrule 8 is located at open position, triggering
Sleeve 12 be squeezed and when moving axially upward, the equal blocking of tail end 100 of syringe 10 can be avoided and along upper housing 1
Sliding axially upwards, and with triggering cutting ferrule 8 offset after, push its movement.
It is further preferred that as shown in figure 13, guide plate 702 is equipped with inside lower case 7, guide plate 702, which offers, to be used for
Across the pilot hole 703 of syringe, while between lower case 7, there are the avoiding spaces for passing through trigger unit 121.In order to needle
The guiding of cylinder 10, and while not influencing to trigger the sliding of sleeve 12, limited by 702 pairs of triggering 12 strokes of sleeve of guide plate
System prevents triggering sleeve 12 and slides into too deep along the direction of upper housing 1 and be difficult to the phenomenon that extracting.
It should be noted that as shown in figure 14, it is further preferred that the automatic injection pen in the present embodiment can also wrap
Include: the guide sleeve 701 for being set to 7 inside of lower case and being connected with lower case 7 matches, and guide sleeve with above-mentioned guide plate 702
There are sliding space between 701 and lower case 7, for across triggering end, to pass through the mutual of guide sleeve 701 and pilot hole 703
Cooperation, the phenomenon that being oriented to the head end of syringe 10, prevent syringe 10 from shaking in use.
It is further preferred that as shown in figure 12, the inner wall of the trigger unit 121 in the present embodiment is equipped with axially extending simultaneously along its
For cooperating the convex ribs 124 of contact guide plate 702, makes trigger unit 121 towards when upper housing sliding, keep open configuration.To prevent
Only when in use due to triggering sleeve, the phenomenon that triggering end collapses and cause to misplace so that touching cannot be triggered precisely
The phenomenon that hair net cylinder 12.It should be noted that convex ribs 124 and raised line 123 in the present embodiment be located at it is same radially so that touching
The opposite sides in hair portion 121 is in contact with limit plate 130 and lower case respectively, can while preferable formation is slidably connected,
Keep the state opened.
It is further used as preferably, as shown in Figure 8 and Figure 9, the inner wall of the upper housing 1 in the present embodiment is also provided with
One baffle 18, the second baffle 19 matched with first baffle 18.Wherein, it is formed and is used between first baffle 18 and second baffle 19
In the limit card slot 25 for the tail end 100 for being inserted into and being clamped syringe 10, also, first baffle 18 and second baffle 19 are and upper housing
There are the triggering spaces for passing through triggering end between 1, to realize the positioning to syringe 10, prevent syringe 10 in automatic injection pen
Use process in the phenomenon that shaking, and the phenomenon that prevent upper housing 1 and lower case 7 from separating when in use, together
When, first baffle 18 can also be when piston rod 3 be in the lock state, to the barrier effect of triggering sleeve 12, so that triggering sleeve
12 can not push triggering cutting ferrule 8, and be located at open position by the rotation of upper housing 1 or lower case 7 when triggering cutting ferrule 8, that is, touch
When hair net 12 top of cylinder, the triggering end for triggering sleeve 12 can push triggering cutting ferrule 8 after through triggering space.
It is noted that the first baffle 18, second baffle 19 and limit card slot 25 in the present embodiment are both preferably two
It is a, and be symmetrical arranged by symmetry axis of the central axes of drive sleeve 2.
In addition, as shown in Fig. 6 and Fig. 9, scheme as a further preference, the press section of drive sleeve 2 in the present embodiment
Inside can also offer chip slot, for close chip slot by gland 212, be arranged in chip slot and for building with external equipment
The induction chip 213 of vertical wireless telecommunications connection, so that when external equipment is close to the press section of the automatic injection pen, it can be by outer
Portion's equipment obtains the relevant information stored in induction chip 213, such as the model of the medical injection device, dosage, ingredient, producer
Information is transmitted in external equipment, and is able to carry out corresponding data exchange, to facilitate the relevant information of user query and accurate
Identification, prevents the phenomenon that mistake is taken.In addition, can also be stored in induction chip 213 by data exchange according to actual needs
Corresponding information, to make information backup inquiry, subsequent use and analyze.
In order to illustrate in the working principle of the present embodiment, the following operating process sketched in the present embodiment is as follows, leads to
Rotatable top shell 1 or lower case 7 are crossed, so that triggering cutting ferrule 8 is located at corresponding open position, i.e., identifies key 108 and mark in figure
When knowing the position of 107 face of key, user is directed at the position for needing to inject for pen is automatically injected, and holds automatic injection pen, presses downwards
, can be in above-described embodiment shown in Fig. 1 when pressure, syringe needle 14 can expose from triggering sleeve 12, and the triggering end for triggering sleeve 12 can be
It is not restricted down by first baffle 18, along lower case 7 axially across the reserved space between guide plate 702 and lower case 7, and
After first baffle 18 and second baffle 19 are upper housing 1 there are for the triggering space across triggering end, squeeze
Pressure triggering cutting ferrule 8 simultaneously compresses metal spring 16 further, so that piston rod 3 is released, and then piston rod 3 is compressing
Under the rebound effect of spring 9, so that piston rod 3 squeezes the medicament in syringe 10, and then the injection volume of complete design, thus when certainly
After dynamic injection pen has been injected, triggering sleeve 12 resets under the rebound effect of metal spring 16, and due to the limit of limit sleeve 13
The interconnecting piece 133 of plate 130 is thrust before triggering sleeve 12 is injected, so that dimpling portion 132 makees in the rebound of lug boss 131
Secondary accidental injury is avoided to realize to the locking of triggering sleeve 12 with avoiding in area 125 for lower insertion triggering sleeve 12
Situation.
Furthermore it should be noted that the above-mentioned each further preferred scheme being related to of the present embodiment, is according to actual conditions
Increase or improved technical solution, to solve corresponding technical problem, therefore its part for being related to and structure for how
Realize to transmission stroke accurate control, with meet high-precision transmission design requirement the technical issues of for, be not necessity
, it can be configured according to practical situation, and the present embodiment does not make specifically restriction and explanation to this.
Above embodiments are only to illustrate the technical solution of the utility model and non-limiting, reference only to preferred embodiment pair
The utility model is described in detail.Those skilled in the art should understand that can be to the technology of the utility model
Scheme is modified or equivalent replacement, without departing from the spirit and scope of the technical scheme of the present invention, should all cover in this reality
With novel scope of the claims.
Claims (11)
1. a kind of locking mechanism for automatically injecting pen, comprising: shell is movably disposed at the intracorporal triggering sleeve of the shell,
Positioned at the syringe triggered in sleeve and be equipped with syringe needle, which is characterized in that further include:
It is set to the limit sleeve being connected together between the triggering sleeve and the shell and with the shell, in the touching
Hair net cylinder carries out locking to it after resetting；
Wherein, the limit sleeve is equipped with locking part, and the triggering sleeve is equipped with and the mutually matched locking position of the locking part.
2. the locking mechanism of automatic injection pen according to claim 1, which is characterized in that the outer wall of the limit sleeve is at least
The hollow-out parts for thering is part to be formed by hollow out；
The locking part includes: the limit plate being arranged in the hollow-out parts, and one end of the limit plate and the limit sleeve
It is connected, and the other end is connected by interconnecting piece with the limit sleeve；
The locking part further include: the lug boss for being set to the inside of the limit plate and being adjacent to the inner wall of the shell, with
And it is set to the dimpling portion in the outside of the limit plate；
The locking position is the lock groove being provided on the triggering sleeve；
When the dimpling portion is broken the interconnecting piece because of the triggering sleeve extruding, and after the triggering sleeve resets,
It is inserted by the rebound effect of the lug boss in the lock groove of the triggering sleeve.
3. the locking mechanism of automatic injection pen according to claim 2, which is characterized in that the lug boss is that arc is convex
It rises, and before interconnecting piece fracture, is interference fit between the lug boss and the inner wall of the shell.
4. the locking mechanism of automatic injection pen according to claim 3, which is characterized in that the dimpling portion and the connection
Portion is connected, and the width of the interconnecting piece is gradually reduced along the radial direction of the limit sleeve.
5. the locking mechanism of automatic injection pen according to claim 2, which is characterized in that the triggering sleeve includes: tool
The trigger unit for having the lock groove, the ring sleeve portion for being connect with the trigger unit and there is outlet end；The outer wall of the trigger unit is set
Have axially extending along its and forms the raised line being slidably connected with shell.
6. the locking mechanism of automatic injection pen according to claim 5, which is characterized in that the limit sleeve includes: to be equipped with
The lug boss and the ring body in the dimpling portion, the clamping portion being connected with the ring body；
The clamping portion include: at least two using the central axis of the limit sleeve as symmetry axis be symmetrical arranged and be used for and the shell
Bar shape that body is connected together, the bending body being connected with the bar shape；
The radially outer protrusion in the outer wall of the trigger unit at least part extends to form limiting section；
Wherein, bayonet is offered on the triggering sleeve, for across the bending body.
7. the locking mechanism of automatic injection pen according to claim 6, which is characterized in that the automatic injection pen also wraps
Include: be arranged in it is described triggering sleeve in metal spring, the opposite end of the metal spring support respectively the bending body and
The inner edge surface of the outlet end.
8. a kind of automatic injection pen, which is characterized in that the lock including automatically injecting pen described in any one of claims 1 to 7
Determine mechanism.
9. automatic injection pen according to claim 8, which is characterized in that the shell includes: upper housing and lower case；
The automatic injection pen further include: for squeezing the piston rod of the syringe；It is arranged drive sleeve on the piston rod；
Cutting ferrule is triggered, is set in the drive sleeve, and be slidably connected along the axial direction of the upper housing and the upper housing, is used
In being in clamping connection the piston rod；
The triggering sleeve, is set to inside the lower case, and is slidably connected along the axial direction of the lower case with it, for pushing away
The triggering cutting ferrule is moved along the axial movement of the upper housing, is connected so that the triggering cutting ferrule and the piston rod are detached from clamping
After connecing, the piston rod is pushed to squeeze the syringe by the drive sleeve；
The upper housing is rotatablely connected in its circumferential direction with the lower case, by between the upper housing and the lower case
Relative rotation, when the triggering cutting ferrule being made to be located at open position, the triggering sleeve can be passed through and push the triggering cutting ferrule.
10. automatic injection pen according to claim 9, which is characterized in that the drive sleeve includes: press section and institute
State the connected sleeve part in press section, the opening being provided on the sleeve part, be arranged on the sleeve part and with the triggering
The elastic card buckle that cutting ferrule matches；
The elastic card buckle protrudes into inside when being squeezed by the triggering cutting ferrule, by the outside of the opening, and with the work
Stopper rod holding is in clamping connection, and after the extruding for losing the triggering cutting ferrule, it is in clamping connection with piston rod disengaging.
11. automatic injection pen according to claim 9, which is characterized in that the tail end of the syringe is fixed on described
On shell or the lower case, the head end of the syringe is sheathed in the triggering sleeve；Opposite the two of the triggering sleeve
End is respectively the triggering end for triggering the triggering cutting ferrule and the outlet end for discharging the syringe needle being connected with the syringe；Institute
Stating triggering sleeve has part to avoid area by what hollow out was formed, and it is described avoid area from the triggering end along its be axially facing it is described out
Mouth end extends, with the tail end for passing through the syringe；Wherein, the area that avoids constitutes the lock groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821430241.XU CN209154759U (en) | 2018-08-31 | 2018-08-31 | Automatically inject the locking mechanism and automatic injection pen of pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821430241.XU CN209154759U (en) | 2018-08-31 | 2018-08-31 | Automatically inject the locking mechanism and automatic injection pen of pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209154759U true CN209154759U (en) | 2019-07-26 |
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ID=67330407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821430241.XU Active CN209154759U (en) | 2018-08-31 | 2018-08-31 | Automatically inject the locking mechanism and automatic injection pen of pen |
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| Country | Link |
|---|---|
| CN (1) | CN209154759U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185602A1 (en) * | 2022-03-30 | 2023-10-05 | 苏州赛卫生物科技有限公司 | Automatic injection pen |
-
2018
- 2018-08-31 CN CN201821430241.XU patent/CN209154759U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023185602A1 (en) * | 2022-03-30 | 2023-10-05 | 苏州赛卫生物科技有限公司 | Automatic injection pen |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200910 Address after: Room 116, 459 Zhennan Road, Putuo District, Shanghai, 201306 Patentee after: Shanghai Conservation Technology Co., Ltd Address before: 201203 Shanghai City, Pudong New Area China (Shanghai) free trade zone fanchun Road No. 400 Building 1 layer 3 Patentee before: SHANGHAI JIUSEN MEDICAL TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210601 Address after: 314100 5 / F, building 6, 5 / F, building 8, No. 313, Lingxiu Road, Luoxing street, Jiashan County, Jiaxing City, Zhejiang Province Patentee after: Jiaxing Senmai Medical Technology Co.,Ltd. Address before: Room 116, 459 Zhennan Road, Putuo District, Shanghai, 201306 Patentee before: Shanghai Conservation Technology Co., Ltd |