CN103446646A - Core rod locking member - Google Patents
Core rod locking member Download PDFInfo
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- CN103446646A CN103446646A CN2012103046008A CN201210304600A CN103446646A CN 103446646 A CN103446646 A CN 103446646A CN 2012103046008 A CN2012103046008 A CN 2012103046008A CN 201210304600 A CN201210304600 A CN 201210304600A CN 103446646 A CN103446646 A CN 103446646A
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- locking piece
- annular
- core bar
- core rod
- piece body
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Abstract
The invention discloses a core rod locking member which comprises a locking member body. The locking member body is provided with an interval longitudinally, and an annular guiding slope is formed at an inner wall of an inner cavity of an annular core rod meshing ring on the upper portion of the annular self-locking groove. After completion of a syringe, the locking member body can realize meshing of the end portion of a core rod and a needle seat and pull the needle seat back in an inner cavity of a syringe barrel to realize safety operation. The core rod locking member has the advantages that the core rod locking member is internally arranged at a lower-end opening of the syringe barrel, can realize firm meshing with the core rod, can simultaneously realize firm meshing with the inner wall of the barrel and can effectively prevent the core rod from being pushed forwards or pulled backwards in a safe state, so that a needle head portion of the end portion of the core rod is avoided from causing accidental damage to personnel; the core rod locking member is reasonable in product design structure and ingenious in concept, the improved core rod locking member can realize full-automatic assembly of the rear portion, requirements of automatized and large-scale production can be met, and the core rod locking member is easy to popularize and apply in safety syringes and safety self-destroying syringes in various specifications.
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 disclose " but a kind of syringe needle is interchangeable and automatic retracted only can expendable safety injector ", comprise overcoat and core bar, described core bar inserts its inner chamber from the overcoat big opening end, also comprise needle for dispensing medicine and injection needle, described core bar is a core structure, the core bar inner chamber is provided with snap ring, one resilience bar alive is set in the masthead open pore of core bar, the Compress Spring ring set is on bar is lived in resilience, Compress Spring one end is resisted against resilience bar alive bar alive plane, the other end is resisted against on the bundle pitch plane of core bar.Described resilience bar alive exposes the core bar masthead and partly is provided with the elastic buckles locking device, and the middle part of resilience bar alive is provided with the card joint, and during assembling, the card in the middle part of resilience bar alive saves the snap ring of crossing the setting of core bar inner chamber and fixed, and the Compress Spring ring set is shielded by pressure on resilience bar alive.
From above-mentioned documents, be not difficult to find out, existing safety injector, after injection completes, can realize that needle retractable, to cylindrical shell, realizes the safety operation of syringe, avoids unexpected injury.
Some does not arrange the core bar locking mechanism existing safety injector, after syringe completes, core bar still can again be pushed ahead in cylindrical shell or from cylinder back-end and be pulled out, cause unexpected injury, although considered the necessity of core bar locking mechanism when some safety injector designs are separately arranged, there is unreasonable part in its project organization, though can realize the secure lock of core bar, but can't realize the rear portion automatic assembling, directly cause automatization in enormous quantities to be gone into operation, waste a large amount of manpowers and fund.
Summary of the invention
The object of the present invention is to provide a kind of core bar locking piece, it is the close built-in core bar locking piece of opening part in the cylindrical shell lower end, this core bar locking piece can with the coordinating from locking plate of core bar place, realize the locking of core bar, prevent that core bar from skidding off the cylindrical shell lower end or needle tubing is pushed out the cylindrical shell upper end again, overcome the shortcoming and defect existed in the prior art.
To achieve these goals, technical scheme of the present invention is: a kind of core bar locking piece, it comprises the locking piece body, it is characterized in that: described locking piece body is cylindrical, locking piece body bottom outer edge place 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 respectively ring portion and lower ring portion, the locking piece body place on upper ring portion top forms the ring-type inclined plane part, the locking piece body place on ring-type inclined plane part top forms annular core bar interlock ring, annular core bar interlock ring place forms the vertical breach of 1-10 bar, in annular core bar interlock ring, the cavity wall place forms annular self-locking grooves, the locking piece body vertically is provided with gap, in the annular core bar interlock ring on annular self-locking grooves top, the cavity wall place forms annular guiding surface.
The invention discloses a kind of core bar locking piece, it can realize the interlock of core bar end and needle stand after syringe completes, and needle stand is pulled back into the syringe cylinder intracoelomic cavity, realizes safety operation.Technical essential of the present invention is, the built-in core bar locking piece at injector cartridge lower ending opening place, this core bar locking piece can be realized the firm interlock with core bar, simultaneously, can realize the firm interlock with cylinder inboard wall, effectively prevent that core bar from again front being pushed away or post-tensioning under safe condition, thereby 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 that rear portion automatically assembles, guarantee the requirement that automatization produces in enormous quantities, be easy to promote the use of safety injector and the safety self-destructing syringe of all size.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is core bar locking piece the first axonometric chart of the present invention.
Fig. 3 is core bar locking piece the 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 the first using state figure.
Fig. 9 is syringe the 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 the first assembly state diagram.
The partial enlarged drawing that Figure 13 is Figure 12.
Figure 14 is locking piece body the second assembly state diagram.
The partial enlarged drawing that Figure 15 is Figure 14.
Figure 16 is locking piece body the 3rd assembly state diagram.
The partial enlarged drawing that Figure 17 is Figure 16.
Figure 18 is locking piece body the 4th assembly state diagram.
The specific embodiment
With reference to the accompanying drawings, the present invention further is described.
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 outside place of locking piece body 1 on locking piece annular stop bulge loop 2 tops forms locking piece annular stop convex tendon 3, locking piece body 1 place of locking piece annular stop convex tendon 3 upper and lowers forms respectively ring portion 4 and lower ring portion 5, locking piece body 1 place on upper ring portion 4 tops forms ring-type inclined plane part 6, locking piece body 1 place on ring-type inclined plane part 6 tops forms annular core bar interlock ring 7, annular core bar interlock ring 7 places form the vertical breach 8 of 1-10 bar, annular core bar interlock ring 7 interior cavity wall places form annular self-locking grooves 9, locking piece body 1 vertically is provided with gap 10, the annular core bar interlock ring 7 interior cavity wall places on annular self-locking grooves 9 tops form 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 bottoms, annular self-locking grooves 9 place's groove-root diameters are greater than annular self-locking grooves 9 top and the bottom locking piece body 1 inner chamber place internal diameters, locking piece body 1 upper end open place internal diameter is greater than annular self-locking grooves 9 top locking piece body 1 inner chamber place internal diameters, 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 diameters are greater than core bar locking piece 7 upper end external diameters.
In the specific implementation, described locking piece annular stop bulge loop 2 external diameters are greater than lower ring portion 5 external diameter 1mm-20mm, and locking piece annular stop bulge loop 2 external diameters are 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 walls and bottom land is right angle.
In the specific implementation, the spacing on 10 tops, described gap is less than the spacing of bottom, is up-narrow and down-wide shape.
In the specific implementation, the syringe core rod place is provided with from locking plate 12, describedly from the upper and lower outer edge of locking plate, all form square edge, external diameter from locking plate 12 is 2mm-60mm, be circular and match with above-mentioned annular self-locking grooves 9 from locking plate, in locking plate 12 is fastened on annular self-locking grooves 9, realize the core bar locking.
In the specific implementation, in described cylindrical shell 13 lower ending openings, the cavity wall place is provided with inverse toroidal step 14, the interior cavity wall of cylindrical shell 13 place on inverse toroidal step 14 tops forms the locking piece annular groove 15 matched with locking piece annular stop convex tendon 3, the interior cavity wall of cylindrical shell 13 place on locking piece annular groove 15 tops forms the cylindrical shell annular stop convex tendon 16 matched with ring-type inclined plane part 6, the interior cavity wall of cylindrical shell 13 place on cylindrical shell annular stop convex tendon 16 tops 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 shown in Fig. 8-Figure 11, while having injected, the locking of the core bar 18 ends section 19 that pulls back is fastened in the holding section 21 at needle stand 20 inner chamber places, pull back core bar, needle stand 20 is drawn in to cylinder lumen in the 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, in locking plate slips into the annular self-locking grooves of core bar locking piece, both sides cell wall and the rectangular shape of bottom land due to annular self-locking grooves, therefore from locking plate by firmly stuck in cell body, so, core bar is fixed, can not promote forward core bar, can not pull back core bar again, now, the vee bending body of rod along core bar body of rod place, core bar fractures the most at last, realize the safety operation of syringe.
As shown in Figure 12-Figure 18, for each parts rear portion assembling schematic diagram of this syringe, be assembled to cylindrical shell lower end inner chamber to the front end by locking piece body 1, then the core bar end is pushed from locking piece body 1 center, because locking piece body 1 vertically is provided with gap, whole locking piece body is run through in this gap from top to bottom, therefore the locking piece body is not when being subject to External Force Acting, the diameter at center can allow core bar pass through fully, after core bar is seated, core locking piece body tip is inwardly headed into, after gap smaller, the locking piece body is assembled after by contracted diameter and puts in place, 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, the ring-type inclined plane part 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, pass through said structure 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 the prior art.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that the concrete enforcement of the present invention is confined to above-mentioned these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (5)
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), the outside place of the locking piece body (1) on locking piece annular stop bulge loop (2) top forms locking piece annular stop convex tendon (3), the locking piece body (1) of locking piece annular stop convex tendon (3) upper and lower locates to form respectively ring portion (4) and lower ring portion (5), the locking piece body (1) on upper ring portion (4) top locates to form ring-type inclined plane part (6), the locking piece body (1) on ring-type inclined plane part (6) top locates to form annular core bar interlock ring (7), annular core bar interlock ring (7) locates to form the vertical breach of 1-10 bar (8), the annular interior cavity wall of core bar interlock ring (7) place forms annular self-locking grooves (9), locking piece body (1) vertically is provided with gap (10), the interior cavity wall of annular core bar interlock ring (7) 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) is located groove-root diameter and is greater than annular self-locking grooves (9) top and the bottom locking piece bodies (1) inner chamber place internal diameter, locking piece body (1) upper end open place internal diameter is greater than annular self-locking grooves (9) top locking piece body (1) inner chamber place 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, it 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,
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.
4. a kind of core bar locking piece according to claim 1, it is characterized in that: the angle between described annular self-locking grooves (9) cell wall and bottom land is right angle.
5. a kind of core bar locking piece according to claim 1, it is characterized in that: the spacing on top, described gap (10) is less than the spacing of bottom, is 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 true CN103446646A (en) | 2013-12-18 |
| CN103446646B CN103446646B (en) | 2015-11-18 |
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Family Applications (1)
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN103446646B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020098578A1 (en) * | 2018-11-16 | 2020-05-22 | Microbase Technology Corp. | Locking mechanism for aerosol 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020098578A1 (en) * | 2018-11-16 | 2020-05-22 | Microbase Technology Corp. | Locking mechanism for aerosol drug delivery device |
| CN111195382A (en) * | 2018-11-16 | 2020-05-26 | 微邦科技股份有限公司 | Locking structure of atomization drug delivery device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103446646B (en) | 2015-11-18 |
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| Date | Code | Title | Description |
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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 |