CN103446646B - A kind of core bar locking piece - Google Patents
A kind of core bar locking piece Download PDFInfo
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- CN103446646B CN103446646B CN201210304600.8A CN201210304600A CN103446646B CN 103446646 B CN103446646 B CN 103446646B CN 201210304600 A CN201210304600 A CN 201210304600A CN 103446646 B CN103446646 B CN 103446646B
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- locking piece
- core bar
- annular
- place
- piece body
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Abstract
The invention discloses a kind of core bar locking piece, comprise locking piece body, described locking piece body is longitudinally provided with gap, and in the annular core bar occlusion ring on annular self-locking grooves top, cavity wall place forms annular guiding surface.After syringe completes, locking piece body can realize being engaged of core bar end and needle stand, and pulls back needle stand into syringe cylinder intracoelomic cavity, realizes safety operation.Technical essential of the present invention is, a built-in core bar locking piece at injector cartridge lower ending opening place, this core bar locking piece can realize being engaged with the firm of core bar, simultaneously, can realize being engaged with the firm of cylinder inboard wall, effectively prevent core bar from again front being pushed away or post-tensioning in the secure state, thus avoid the needle section of core bar end to cause unexpected injury to personnel, product design is rational in infrastructure, be skillfully constructed, core bar locking piece after improvement can realize rear portion and automatically assemble, guarantee the requirement that automatization produces in enormous quantities, be easy to the safety injector and the safety self-destructing syringe that promote the use of all size.
Description
Technical field
The present invention relates to the technical field of medical apparatus and instruments, specifically a kind of locking mechanism for safety injector, particularly its frame for movement.
Background technology
Documents, the patent No.: ZL201110066497.3, the applying date: 2011.03.12, patentee: Xu Haohua, this case discloses " a kind of syringe needle interchangeable and can automatic retracted only can expendable safety injector ", comprise overcoat and core bar, described core bar is inserted therein chamber from overcoat big opening end, also comprise needle for dispensing medicine and injection needle, described core bar is a core structure, core bar inner chamber is provided with snap ring, one resilience bar alive is set in the masthead open pore of core bar, Compress Spring ring set is lived on bar in resilience, Compress Spring one end is resisted against resilience bar alive bar plane alive, the other end is resisted against on the bundle pitch plane of core bar.Described resilience bar alive exposes core bar top portion and is provided with elastic buckles locking device, and the middle part of resilience bar alive is provided with card joint, and during assembling, the snap ring that the card joint in the middle part of resilience bar alive crosses the setting of core bar inner chamber is fixed, and Compress Spring ring set is shielded by pressure on resilience bar alive.
Be not difficult to find out from above-mentioned documents, existing safety injector, after injection completes, can realize needle retractable in cylindrical shell, realize the safety operation of syringe, avoid unexpected injury.
Existing safety injector some core bar locking mechanism is not set, after syringe completes, core bar still again can be pushed forward in cylindrical shell or pull out from cylinder back-end, cause unexpected injury, although considered the necessity of core bar locking mechanism when separately having some safety injectors to design, there is unreasonable part in its project organization, though the secure lock of core bar can be realized, but rear portion automatic assembling cannot be realized, directly cause automatization going into operation in enormous quantities, waste a large amount of manpower and fund.
Summary of the invention
The object of the present invention is to provide a kind of core bar locking piece, its in cylindrical shell lower end near the built-in core bar locking piece of opening part, this core bar locking piece can with the coordinating from locking plate of core bar place, realize the locking of core bar, prevent core bar from skidding off cylindrical shell lower end or needle tubing is pushed out cylindrical shell upper end again, overcome the shortcoming and defect existed in prior art.
To achieve these goals, technical scheme of the present invention is: a kind of core bar locking piece, it comprises locking piece body, it is characterized in that: described locking piece body is cylindrical, locking piece body bottom portion outer edge forms locking piece annular stop bulge loop, the locking piece body exterior place on locking piece annular stop bulge loop top forms locking piece annular stop convex tendon, the locking piece body place of locking piece annular stop convex tendon upper and lower forms upper ring section and lower ring portion respectively, the locking piece body place on upper ring section top forms annular chamfer portion, the locking piece body place on top, annular chamfer portion forms annular core bar occlusion ring, annular core bar occlusion ring place forms the longitudinal breach of 1-10 bar, in annular core bar occlusion ring, cavity wall place forms annular self-locking grooves, locking piece body is longitudinally provided with gap, in the annular core bar occlusion ring on annular self-locking grooves top, cavity wall place forms annular guiding surface.
The invention discloses a kind of core bar locking piece, it is after syringe completes, and can realize being engaged of core bar end and needle stand, and pull back needle stand into syringe cylinder intracoelomic cavity, realize safety operation.Technical essential of the present invention is, a built-in core bar locking piece at injector cartridge lower ending opening place, this core bar locking piece can realize being engaged with the firm of core bar, simultaneously, can realize being engaged with the firm of cylinder inboard wall, effectively prevent core bar from again front being pushed away or post-tensioning in the secure state, thus avoid the needle section of core bar end to cause unexpected injury to personnel, product design is rational in infrastructure, be skillfully constructed, core bar locking piece after improvement can realize rear portion and automatically assemble, guarantee the requirement that automatization produces in enormous quantities, be easy to the safety injector and the safety self-destructing syringe that promote the use of all size.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is core bar locking piece first axonometric chart of the present invention.
Fig. 3 is core bar locking piece second axonometric chart of the present invention.
Fig. 4 is core bar locking piece the 3rd axonometric chart of the present invention.
Fig. 5 is core bar locking piece the 4th axonometric chart of the present invention.
Fig. 6 is this syringe core rod structure schematic diagram.
Fig. 7 is this syringe barrel structure schematic diagram.
Fig. 8 is syringe first using state figure.
Fig. 9 is syringe second using state figure.
Figure 10 is syringe the 3rd using state figure.
Figure 11 is syringe the 4th using state figure.
Figure 12 is locking piece body first assembly state diagram.
Figure 13 is the partial enlarged drawing of Figure 12.
Figure 14 is locking piece body second assembly state diagram.
Figure 15 is the partial enlarged drawing of Figure 14.
Figure 16 is locking piece body the 3rd assembly state diagram.
Figure 17 is the partial enlarged drawing of Figure 16.
Figure 18 is locking piece body the 4th assembly state diagram.
Detailed description of the invention
With reference to the accompanying drawings, the present invention is described further.
The present invention is a kind of core bar locking piece, as shown in fig. 1, it comprises locking piece body 1, it is characterized in that: described locking piece body 1 is cylindrical, locking piece body 1 bottom outer edge place forms locking piece annular stop bulge loop 2, the locking piece body 1 outside place on locking piece annular stop bulge loop 2 top forms locking piece annular stop convex tendon 3, locking piece body 1 place of locking piece annular stop convex tendon 3 upper and lower forms upper ring section 4 and lower ring portion 5 respectively, locking piece body 1 place on upper ring section 4 top forms annular chamfer portion 6, locking piece body 1 place on top, annular chamfer portion 6 forms annular core bar occlusion ring 7, annular core bar occlusion ring 7 place forms the longitudinal breach 8 of 1-10 bar, in annular core bar occlusion ring 7, cavity wall place forms annular self-locking grooves 9, locking piece body 1 is longitudinally provided with gap 10, in the annular core bar occlusion ring 7 on annular self-locking grooves 9 top, cavity wall place forms annular guiding surface 11.
In the specific implementation, the internal diameter at described locking piece body 1 lower ending opening place is greater than the locking piece body 1 inner chamber place internal diameter of annular self-locking grooves 9 bottom, annular self-locking grooves 9 place groove-root diameter is greater than locking piece body 1 inner chamber place, annular self-locking grooves 9 top and the bottom internal diameter, locking piece body 1 upper end open place internal diameter is greater than locking piece body 1 inner chamber place, annular self-locking grooves 9 top internal diameter, locking piece body 1 upper end open place internal diameter is less than locking piece body 1 lower ending opening place internal diameter, and locking piece annular stop bulge loop 2 external diameter is greater than core bar locking piece 7 upper end external diameter.
In the specific implementation, described locking piece annular stop bulge loop 2 external diameter is greater than lower ring portion 5 external diameter 1mm-20mm, and locking piece annular stop bulge loop 2 external diameter is 3mm-58mm.
In the specific implementation, the length between described locking piece body 1 top and bottom is 3mm-50mm.
In the specific implementation, the angle between described annular self-locking grooves 9 cell wall and bottom land is right angle.
In the specific implementation, the spacing on top, described gap 10 is less than the spacing of bottom, in up-narrow and down-wide shape.
In the specific implementation, syringe core rod place is provided with from locking plate 12, describedly all form square edge from the upper and lower outer edge of locking plate, be 2mm-60mm from the external diameter of locking plate 12, be circle from locking plate and match with above-mentioned annular self-locking grooves 9, be fastened in annular self-locking grooves 9 from locking plate 12, realize core bar locking.
In the specific implementation, in described cylindrical shell 13 lower ending opening, cavity wall place is provided with inverse toroidal step 14, in the cylindrical shell 13 on inverse toroidal step 14 top, cavity wall place forms the locking piece annular groove 15 matched with locking piece annular stop convex tendon 3, in the cylindrical shell 13 on locking piece annular groove 15 top, cavity wall place forms the cylindrical shell annular stop convex tendon 16 matched with annular chamfer portion 6, in the cylindrical shell 13 on cylindrical shell annular stop convex tendon 16 top, cavity wall place forms cylindrical shell annular reverse step 17, the internal diameter at the cylinder lumen inwall place between cylindrical shell annular stop convex tendon 16 and cylindrical shell annular reverse step 17 is greater than 3mm and is less than 60mm, cylinder lumen inwall place internal diameter between cylindrical shell annular stop convex tendon 16 and cylindrical shell annular reverse step 17 is less than the cylinder lumen inwall place internal diameter between cylindrical shell annular stop convex tendon 16 and locking piece annular groove 15.
In actual use, as as shown in Fig. 8-Figure 11, when having injected, the locking of the core bar 18 end portion 19 that pulls back is fastened in the holding section 21 at needle stand 20 inner chamber place, pull back core bar, needle stand 20 is drawn in cylinder lumen in cylinder neck, continue to pull back core bar, now, core bar after locking plate skims over the annular guiding surface of core bar locking piece, slip in the annular self-locking grooves of core bar locking piece from locking plate, due to both sides cell wall and the rectangular shape of bottom land of annular self-locking grooves, therefore from locking plate by firmly stuck in cell body, so, core bar is fixed, can not driven forward core bar, core bar can not be pulled back again, now, along the vee bending body of rod at core bar body of rod place, core bar fractures the most at last, realize the safety operation of syringe.
As as shown in Figure 12-Figure 18, for this syringe each parts rear portion assembling schematic diagram, cylindrical shell lower end inner chamber is assembled to by the front end of locking piece body 1, then core bar end is pushed from locking piece body 1 center, because locking piece body 1 is longitudinally provided with gap, whole locking piece body is run through in this gap from top to bottom, therefore locking piece body is not when by External Force Acting, the diameter at center can allow core bar pass through completely, after core bar is seated, core locking piece body tip is inwardly headed into, after gap smaller, locking piece body puts in place by being assembled after contracted diameter, now, locking piece annular stop convex tendon just snaps in the locking piece annular groove of cylindrical shell, the top of locking piece body just props up the cylindrical shell annular reverse step in cylindrical shell, annular chamfer portion just props up cylindrical shell annular stop convex tendon, locking piece annular stop bulge loop just props up the inverse toroidal step at cylindrical shell place, said structure is passed through between locking piece body and cylindrical shell, realize firmly fastening state, comprehensive foregoing description, the art of this patent can realize full-automatic rear portion assembling procedure, overcome the breach existed in prior art.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that the present invention specifically implements to be confined to these explanations above-mentioned.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. a core bar locking piece, it comprises locking piece body (1), it is characterized in that: described locking piece body (1) is cylindrical, locking piece body (1) bottom outer edge place forms locking piece annular stop bulge loop (2), locking piece body (1) the outside place on locking piece annular stop bulge loop (2) top forms locking piece annular stop convex tendon (3), locking piece body (1) place of locking piece annular stop convex tendon (3) upper and lower forms upper ring section (4) and lower ring portion (5) respectively, locking piece body (1) place on upper ring section (4) top forms annular chamfer portion (6), locking piece body (1) place on annular chamfer portion (6) top forms annular core bar occlusion ring (7), annular core bar occlusion ring (7) place forms the longitudinal breach (8) of 1-10 bar, annular core bar occlusion ring (7) interior cavity wall place forms annular self-locking grooves (9), locking piece body (1) is longitudinally provided with gap (10), annular core bar occlusion ring (7) the interior cavity wall place on annular self-locking grooves (9) top forms annular guiding surface (11).
2. a kind of core bar locking piece according to claim 1, it is characterized in that: the internal diameter at described locking piece body (1) lower ending opening place is greater than locking piece body (1) the inner chamber place internal diameter of annular self-locking grooves (9) bottom, annular self-locking grooves (9) place groove-root diameter is greater than locking piece body (1) inner chamber place, annular self-locking grooves (9) top and the bottom internal diameter, locking piece body (1) upper end open place internal diameter is greater than locking piece body (1) inner chamber place, annular self-locking grooves (9) top internal diameter, locking piece body (1) upper end open place internal diameter is less than locking piece body (1) lower ending opening place internal diameter, locking piece annular stop bulge loop (2) external diameter is greater than core bar locking piece (7) upper end external diameter.
3. a kind of core bar locking piece according to claim 1, is characterized in that: described locking piece annular stop bulge loop (2) external diameter is greater than lower ring portion (5) external diameter 1mm-20mm, and locking piece annular stop bulge loop (2) external diameter is 3mm-58mm.
4. a kind of core bar locking piece according to claim 1, is characterized in that: the length between described locking piece body (1) top and bottom is 3mm-50mm.
5. a kind of core bar locking piece according to claim 1, is characterized in that: the angle of described annular self-locking grooves (9) between cell wall and bottom land is right angle.
6. a kind of core bar locking piece according to claim 1, is characterized in that: the spacing on described gap (10) top is less than the spacing of bottom, in up-narrow and down-wide shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304600.8A CN103446646B (en) | 2012-08-24 | 2012-08-24 | A kind of core bar locking piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210304600.8A CN103446646B (en) | 2012-08-24 | 2012-08-24 | A kind of core bar locking piece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103446646A CN103446646A (en) | 2013-12-18 |
| CN103446646B true CN103446646B (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210304600.8A Expired - Fee Related CN103446646B (en) | 2012-08-24 | 2012-08-24 | A kind of core bar locking piece |
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| CN (1) | CN103446646B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195382B (en) * | 2018-11-16 | 2022-04-19 | 微邦科技股份有限公司 | Locking structure of atomization drug delivery device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201500347U (en) * | 2009-04-01 | 2010-06-09 | 江苏亿乐医疗用品有限公司 | Safe injector |
| CN201643259U (en) * | 2010-08-19 | 2010-11-24 | 江苏亿乐医疗用品有限公司 | Safety self-destruction type injector |
| CN201969140U (en) * | 2010-12-13 | 2011-09-14 | 江苏亿乐医疗用品有限公司 | Upper connecting seat structure used for safety self-destruction syringe |
| CN201969138U (en) * | 2010-12-13 | 2011-09-14 | 江苏亿乐医疗用品有限公司 | Lower connecting seat structure for safety syringe and auto-disable syringe |
| CN201987989U (en) * | 2010-12-13 | 2011-09-28 | 江苏亿乐医疗用品有限公司 | Mandrel locking structure |
| CN202822350U (en) * | 2012-08-24 | 2013-03-27 | 江苏亿乐医疗用品有限公司 | Core rod locking piece |
-
2012
- 2012-08-24 CN CN201210304600.8A patent/CN103446646B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201500347U (en) * | 2009-04-01 | 2010-06-09 | 江苏亿乐医疗用品有限公司 | Safe injector |
| CN201643259U (en) * | 2010-08-19 | 2010-11-24 | 江苏亿乐医疗用品有限公司 | Safety self-destruction type injector |
| CN201969140U (en) * | 2010-12-13 | 2011-09-14 | 江苏亿乐医疗用品有限公司 | Upper connecting seat structure used for safety self-destruction syringe |
| CN201969138U (en) * | 2010-12-13 | 2011-09-14 | 江苏亿乐医疗用品有限公司 | Lower connecting seat structure for safety syringe and auto-disable syringe |
| CN201987989U (en) * | 2010-12-13 | 2011-09-28 | 江苏亿乐医疗用品有限公司 | Mandrel locking structure |
| CN202822350U (en) * | 2012-08-24 | 2013-03-27 | 江苏亿乐医疗用品有限公司 | Core rod locking piece |
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| Publication number | Publication date |
|---|---|
| CN103446646A (en) | 2013-12-18 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190611 Address after: 213111 Baiyangqiao 66, Huangtiandang Village Committee, Zhenglu Town, Tianning District, Changzhou City, Jiangsu Province Patentee after: Changzhou Kangfulai Medical Supplies Co., Ltd. Address before: 213115 Sanhekou Industrial Development Zone, Changzhou City, Jiangsu Province Patentee before: Jiangsu Yile Medicial Article Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20200824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |