CN102949767B - A kind of needle point can the syringe of retrieving safety injector and core bar latching structure - Google Patents
A kind of needle point can the syringe of retrieving safety injector and core bar latching structure Download PDFInfo
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- CN102949767B CN102949767B CN201110239913.5A CN201110239913A CN102949767B CN 102949767 B CN102949767 B CN 102949767B CN 201110239913 A CN201110239913 A CN 201110239913A CN 102949767 B CN102949767 B CN 102949767B
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- core bar
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- latching structure
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- convex ring
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- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000001066 destructive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 1
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Abstract
The invention discloses a kind of needle point can the syringe of retrieving safety injector and core bar latching structure, and comprise syringe and core bar, described syringe endoporus is provided with upper and lower two bulge loops at afterbody, forms a slot between upper lower convex ring; Described core bar body is provided with external diameter and is greater than lower convex ring internal diameter on syringe and two flanges up and down matched with syringe endoporus aperture, upper and lower two flanges are adjacent and arrange dorsad, and upper flange is towards core bar head, and lower flange is towards core bar afterbody; Bulge loop on described syringe is crossed in the deformable when core bar post-tensioning arrives syringe endoporus afterbody of upper and lower two flanges and to snap in described slot locked.
Description
Technical field
The present invention relates to the retractable safety injector of a kind of needle point, particularly a kind of needle point can the syringe of retrieving safety injector and core bar latching structure.
Background technology
In the middle of disposible safety syringe, wherein there is a kind of safe self-breaking syringe, the retraction of its needle point is realized by manpower manual post-tensioning core bar, at this, for realizing effective self-destruction of syringe, a core bar of avoiding overexerting pulls out and causes syringe needle to expose from syringe, also makes needle pierces syringe for core bar after avoiding self-destruction pushes back and exposes simultaneously, generally all between syringe endoporus afterbody and core bar, be provided with latching structure.
At present, existing latching structure generally comprises the collar that one of syringe endoporus afterbody engages two snap flange on bulge loop, core bar and assists assembling.Wherein said engaging bulge loop both sides are right-angle structure, and described two snap flange in opposite directions interval are arranged, and the slot that interval arranges formation between the two can engage with described engaging bulge loop.
Above vibrational power flow, although the screens that can realize well after core bar retraction is locked, but because being limited to structural design defect, make in the assembling process of core bar and syringe, the engaging bulge loop that two snap flange on core bar cannot directly be crossed on syringe directly assembles, just can must complete by means of a collar, split the outside of two snap flange on core bar can be movably arranged at this collar, also the outside of engaging protrusion on syringe can be arranged on, but no matter that set-up mode, all will increase an accessory to syringe, this not only causes the increase of manufacturing cost on the one hand, also assembling can be made complicated simultaneously, greatly reduce the efficiency of assembling of core bar and syringe.
Summary of the invention
For the problems referred to above, the invention provides a kind of needle point can the syringe of retrieving safety injector and core bar latching structure, it is while guarantee latching structure locking effect, eliminate the collar of assembling, decrease accessory, simplify installation step, the efficiency of assembling of core bar and syringe can be promoted to a certain extent.
For achieving the above object, the present invention is by the following technical solutions:
Needle point can the syringe of retrieving safety injector and a core bar latching structure, comprises syringe and core bar, it is characterized in that: described syringe endoporus is provided with upper and lower two bulge loops at afterbody, forms a slot between upper lower convex ring; Described core bar body is provided with external diameter and is greater than lower convex ring internal diameter on syringe and two flanges up and down matched with syringe endoporus aperture, upper and lower two flanges are adjacent and arrange dorsad, and upper flange is towards core bar head, and lower flange is towards core bar afterbody; Bulge loop on described syringe is crossed in the deformable when core bar post-tensioning arrives syringe endoporus afterbody of upper and lower two flanges and to snap in described slot locked.
Further, the upper side of above-mentioned upper bulge loop is the inclined-plane of an oblique interior setting from top to bottom, and the downside of upper bulge loop is vertical with syringe inner hole wall to be arranged.
Further, the upper side of above-mentioned lower convex ring is vertical with syringe inner hole wall to be arranged, and the downside of lower convex ring is the inclined-plane of oblique outer setting from top to bottom.
Further, above-mentioned core bar upper flange is that a sheet type falls beveled structure.
Further, above-mentioned core bar lower flange is that a sheet type falls beveled structure.
Further, above-mentioned core bar lower flange is some elasticity support claw structures arranged around core bar.
Further, above-mentioned lower flange bottom is towards being arranged with some screens projections, and each screens projection is less than the aperture of upper and lower two bulge loops of syringe around the position diameter arranged relative to core bar.
Further, on above-mentioned core bar near on the downside of lower flange be provided with easy fracture.
Latching structure of the present invention only comprises two bulge loops up and down on syringe and two flanges up and down on core bar, without the thimble structure coordinating assembling, decreases accessory, reduces production cost.
When assembling, first the ramp structure of syringe lower convex ring downside is utilized, upper lower flange on core bar is out of shape gradually inside contract and go deep into lower convex ring endoporus, then promote core bar fast, utilize the inertia of core bar, make lower flange on the core bar that also do not recover completely, successfully cross slot and upper bulge loop endoporus and enter syringe endoporus front portion and complete assembling, whole assembling process is quick and facilitate, and can promote efficiency of assembling exponentially.
And in self-destruction process, when core bar post-tensioning, on core bar lower flange first on syringe bulge loop upper side ramp structure effect under be out of shape and inside contract, and cross bulge loop endoporus smoothly and enter in the slot between lower convex ring, now, the distortion of upper lower flange recovers completely, wherein on upper flange and syringe, the downside, right angle of bulge loop is stuck, on the right angle of lower flange and lower convex ring, bulge loop is stuck, do not destroying lower flange, when upper lower convex ring self structure, core bar cannot post-tensioning also cannot on push away, then core bar is fractureed from easy incision position and can realize the self-destruction of syringe.
At this, for firmly excessive when avoiding core bar post-tensioning and destroy lower flange structure and cause the whole pull-out of core bar, the present invention is arranged with some screens projections in lower flange bottom court, this screens projection enters the endoporus of lower convex ring when core bar post-tensioning puts in place and offsets with inner hole wall, this structure can effectively avoid the destructive deformation of lower flange to reverse, and stops core bar and is drawn out because of firmly excessive.
To sum up, the present invention while latching structure locking effect, eliminates the collar of assembling, decreases accessory, reduce production cost, simplify installation step, can promote the efficiency of assembling of core bar and syringe to a great extent between guarantee core bar and syringe.
Accompanying drawing explanation
The structural representation of Fig. 1, core bar of the present invention;
The enlarged drawing in A portion in Fig. 2, Fig. 1 of the present invention;
The structural representation of Fig. 3, syringe of the present invention;
The enlarged drawing in B portion in Fig. 4, Fig. 2 of the present invention;
Cooperation schematic diagram before Fig. 5, syringe of the present invention and core bar self-destruction;
The cooperation schematic diagram that Fig. 6, syringe of the present invention and core bar self-destruction engage;
The partial enlarged drawing in C portion in Fig. 7, Fig. 6 of the present invention;
Fig. 8, syringe of the present invention are from structural representation after the meeting.
Detailed description of the invention
As shown in figures 1-8, a kind of needle point can the syringe of retrieving safety injector and core bar latching structure, comprises syringe 1 and core bar 2.
The endoporus of described syringe 1 is provided with upper and lower two bulge loops 11,12 at afterbody.The upper side 111 wherein going up bulge loop 11 is the inclined-plane of an oblique interior setting from top to bottom, and the downside 112 of upper bulge loop 11 is vertical with syringe inner hole wall to be arranged.The upper side 121 of lower convex ring 12 is vertical with syringe inner hole wall to be arranged, and the downside 122 of lower convex ring 12 is the inclined-plane of oblique outer setting from top to bottom.A slot 13 is formed between upper lower convex ring 11,12.
Described core bar 2 body is provided with external diameter and is greater than lower convex ring 11,12 internal diameter on syringe and two flanges 21,22 up and down matched with syringe 1 endoporus aperture, upper and lower two flanges 21,22 adjacent and arrange dorsad.Upper flange 21, towards core bar 1 head, is that a sheet type falls beveled structure.Lower flange 22 is towards core bar 2 afterbody, and lower flange 22 can be arranged to a sheet type and fall beveled structure, also can be arranged to some elasticity support claw structures around core bar, adopt the latter in present embodiment.Bulge loop 11 on described syringe is crossed in the deformable when core bar 2 post-tensioning arrives syringe 1 endoporus afterbody of upper and lower two flanges 21,22 and to snap in described slot 13 locked.Simultaneously on core bar 2 near on the downside of lower flange 21,22 be provided with easy fracture 23.
Latching structure of the present invention only comprises two bulge loops 11,12 up and down on syringe 1 and two flanges 21,22 up and down on core bar 2, without the thimble structure coordinating assembling, decreases accessory, reduces production cost.
When assembling, first the ramp structure of syringe lower convex ring downside 122 is utilized, upper lower flange 21,22 on core bar 2 is out of shape gradually inside contract and go deep into lower convex ring 12 endoporus, then promote core bar 2 fast, utilize the inertia of core bar 2, make lower flange 21,22 on the core bar that also do not recover completely, successfully cross slot 13 and upper bulge loop 11 endoporus and enter syringe 1 endoporus front portion and complete assembling, whole assembling process is quick and facilitate, and can promote efficiency of assembling exponentially.
And in self-destruction process, when core bar 2 post-tensioning, lower flange 21 on core bar, 22 first on syringe 1 bulge loop upper side 111 ramp structure effect under be out of shape and inside contract, and cross bulge loop 11 endoporus smoothly and enter lower convex ring 11, in slot 13 between 12, now, upper lower flange 21, the distortion of 22 recovers completely, wherein upper flange 21 is stuck with the downside, right angle 112 of bulge loop 11 on syringe, lower flange 22 is stuck with bulge loop 121 on the right angle of lower convex ring 12, do not destroying lower flange 21, 22, upper lower convex ring 11, when 12 self structure, core bar 2 cannot post-tensioning also cannot on push away, then core bar 2 is fractureed from easy fracture 23 and can realize the self-destruction of syringe.
At this, for firmly excessive when avoiding core bar 2 post-tensioning and destroy lower flange 22 structure and cause the whole pull-out of core bar 2, the present invention is in lower flange 22 bottom towards being arranged with some screens projections 221, and each screens projection 221 relatively core bar 2 is less than the aperture of upper and lower two bulge loops 11,12 of syringe around the position diameter arranged.This screens projection 221 enters the endoporus of lower convex ring 12 when core bar 2 post-tensioning puts in place and offsets with its inner hole wall, and this structure can effectively avoid the destructive deformation of lower flange 22 to reverse, and stops core bar 2 and is drawn out because of firmly excessive.
To sum up, the present invention while latching structure locking effect, eliminates the collar of assembling, decreases accessory, reduce production cost, simplify installation step, can promote the efficiency of assembling of core bar and syringe to a great extent between guarantee core bar and syringe.
The above, it is only better embodiment of the present invention, not any pro forma restriction is done to invention, every according to know-why of the present invention to any simple modification made for any of the above embodiments, equivalent variations or modification, still belong in the scope of technical solution of the present invention.
Claims (8)
1. needle point can the syringe of retrieving safety injector and a core bar latching structure, comprises syringe and core bar, it is characterized in that: described syringe endoporus is provided with upper and lower two bulge loops at afterbody, forms a slot between upper lower convex ring; Described core bar body is provided with external diameter and is greater than lower convex ring internal diameter on syringe and two flanges up and down matched with syringe endoporus aperture, upper and lower two flanges are adjacent and arrange dorsad, and upper flange is towards core bar head, and lower flange is towards core bar afterbody; Bulge loop on described syringe is crossed in the deformable when core bar post-tensioning arrives syringe endoporus afterbody of upper and lower two flanges and to snap in described slot locked.
2. latching structure as claimed in claim 1, is characterized in that: the upper side of described upper bulge loop is the inclined-plane of an oblique interior setting from top to bottom, and the downside of upper bulge loop is vertical with syringe inner hole wall to be arranged.
3. latching structure as claimed in claim 1, it is characterized in that: the upper side of described lower convex ring is vertical with syringe inner hole wall to be arranged, the downside of lower convex ring is the inclined-plane of oblique outer setting from top to bottom.
4. latching structure as claimed in claim 1, is characterized in that: described core bar upper flange is that a sheet type falls beveled structure.
5. latching structure as claimed in claim 1, is characterized in that: described core bar lower flange is that a sheet type falls beveled structure.
6. latching structure as claimed in claim 1, is characterized in that: described core bar lower flange is some elasticity support claw structures arranged around core bar.
7. the latching structure as described in claim 1,5 and 6 any one claims, it is characterized in that: described lower flange bottom is towards being arranged with some screens projections, and each screens projection is less than the aperture of upper and lower two bulge loops of syringe around the position diameter arranged relative to core bar.
8. latching structure as claimed in claim 1, is characterized in that: on described core bar near on the downside of lower flange be provided with easy fracture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110239913.5A CN102949767B (en) | 2011-08-22 | 2011-08-22 | A kind of needle point can the syringe of retrieving safety injector and core bar latching structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110239913.5A CN102949767B (en) | 2011-08-22 | 2011-08-22 | A kind of needle point can the syringe of retrieving safety injector and core bar latching structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102949767A CN102949767A (en) | 2013-03-06 |
| CN102949767B true CN102949767B (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110239913.5A Active CN102949767B (en) | 2011-08-22 | 2011-08-22 | A kind of needle point can the syringe of retrieving safety injector and core bar latching structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2576694B (en) * | 2018-06-14 | 2022-09-07 | Janssen Pharmaceuticals Inc | Pharmaceutical product preparation device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2706180Y (en) * | 2004-04-19 | 2005-06-29 | 刘蓉娥 | Jacket control type safety injector |
| CN201267664Y (en) * | 2008-10-22 | 2009-07-08 | 朱贤嫒 | Disposable syringe |
| CN201492777U (en) * | 2009-09-22 | 2010-06-02 | 江振标 | Needle cylinder and core rod clamping and locking structure of safety syringe with retractable needle point |
| CN202211912U (en) * | 2011-08-22 | 2012-05-09 | 陈巧玲 | Needle cylinder and core rod clamping structure of safety syringe with retractable needle tip |
-
2011
- 2011-08-22 CN CN201110239913.5A patent/CN102949767B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2706180Y (en) * | 2004-04-19 | 2005-06-29 | 刘蓉娥 | Jacket control type safety injector |
| CN201267664Y (en) * | 2008-10-22 | 2009-07-08 | 朱贤嫒 | Disposable syringe |
| CN201492777U (en) * | 2009-09-22 | 2010-06-02 | 江振标 | Needle cylinder and core rod clamping and locking structure of safety syringe with retractable needle point |
| CN202211912U (en) * | 2011-08-22 | 2012-05-09 | 陈巧玲 | Needle cylinder and core rod clamping structure of safety syringe with retractable needle tip |
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| Publication number | Publication date |
|---|---|
| CN102949767A (en) | 2013-03-06 |
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Effective date of registration: 20160303 Address after: 214400 Jiangsu city of Jiangyin Province Hua Zhenlong sand Industrial Park (Shu Village) Patentee after: JIANGYIN CAINA TECHNOLOGY CO., LTD. Address before: Taizhou City, Zhejiang province 317500 Wenling City Hongxing Village LuoHeng town A District No. 120 Patentee before: Chen Qiaoling |
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Address after: 214400 Jiangsu city of Wuxi province Jiangyin City Hua Zhenlong sand Industrial Park (Shu Village) Patentee after: Adoption of Polytron Technologies Inc Address before: 214400 Jiangsu city of Jiangyin Province Hua Zhenlong sand Industrial Park (Shu Village) Patentee before: JIANGYIN CAINA TECHNOLOGY CO., LTD. |