CN204446813U - A kind of injection pen - Google Patents
A kind of injection pen Download PDFInfo
- Publication number
- CN204446813U CN204446813U CN201420860951.1U CN201420860951U CN204446813U CN 204446813 U CN204446813 U CN 204446813U CN 201420860951 U CN201420860951 U CN 201420860951U CN 204446813 U CN204446813 U CN 204446813U
- Authority
- CN
- China
- Prior art keywords
- push rod
- chaste tree
- core shell
- pen core
- movable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
This utility model relates to a kind of injection pen, comprise pen core shell, also comprise the push rod running through described pen core shell, be arranged at the female thread axle sleeve of described pen core shell inside, the movable chaste tree wheel of triangle, spring and be connected in the positioning joint of described pen core shell lower end, described push rod is provided with the screw thread of certain length, and is close in screw thread end and is provided with chaste tree pawl; Described female thread axle sleeve spiral is fixed on screw thread place on described push rod; The movable chaste tree wheel of described triangle is nested on described push rod, is meshed with chaste tree pawl on described push rod; Described spring is nested on described push rod, and its one end and the movable chaste tree of described triangle are taken turns and abut against, and the other end and described positioning joint abut against; Described positioning joint is socketed on described push rod; This utility model structure is simple, it is easy to operate to use, injection accurately, low, the compact structure of production cost, to be easy to carry about with one.
Description
Technical field
This utility model relates to medical instruments field, specifically discloses a kind of injection pen.
Background technology
On market, various syringe is of a great variety, and it mainly exists some drawback following:
1, existing product many employings screw knob mode controls, and operation is comparatively complicated;
2, for one milliliter of clamped bottle, time, more existing products are all adopt human eye directly to observe aerofluxus, cannot accomplish accurate aerofluxus, can cause the waste of medicinal liquid like this, also can increase error during injection simultaneously, reduce its injection precision;
3, product structure is complicated, and production cost is higher;
4, complex structure causes assembly technology too loaded down with trivial details, adds labor intensity;
5, existing product size is comparatively large, not portable.
Utility model content
Goal of the invention of the present utility model is: for overcome the above problems provide a kind of structure simple, use easy to operate, injection accurately, low, the compact structure of production cost, the injection pen that is easy to carry about with one.
The technical scheme that this utility model adopts is such:
A kind of injection pen, comprise pen core shell, also comprise the push rod running through described pen core shell, be arranged at the female thread axle sleeve of described pen core shell inside, the movable chaste tree wheel of triangle, spring and be connected in the positioning joint of described pen core shell lower end, described push rod is provided with the screw thread of certain length, and is close in screw thread end and is provided with chaste tree pawl; Described female thread axle sleeve spiral is fixed on screw thread place on described push rod; The movable chaste tree wheel of described triangle is nested on described push rod, is meshed with chaste tree pawl on described push rod; Described spring is nested on described push rod, and its one end and the movable chaste tree of described triangle are taken turns and abut against, and the other end and described positioning joint abut against; Described positioning joint is socketed on described push rod.
Further, be provided with two grooves along its length at described pen core shell inwall, correspondingly, the sidewall of the movable chaste tree wheel of described female thread axle sleeve and described triangle is all symmetrically arranged with along its length two with the fin of described groove match.
Further, on described push rod reach no longer than the length of described female thread axle sleeve.
Further, on described push rod, reach is 3 ~ 5mm.
Further, on described push rod, the pitch of screw thread is 0.5 ~ 1.5mm, and accordingly, the female thread pitch of described female thread axle sleeve is 0.5 ~ 1.5mm.
Further, described spring is initially in compressive state.
Further, described positioning joint one end is provided with two fins, and be connected in the groove of described pen core shell inwall, the other end is provided with screw thread, for fixing medicine bottle.
In sum, owing to adopting technique scheme, the beneficial effects of the utility model are:
1, this utility model adopts and rotates aerofluxus, the method for direct injection, but the two is all directly carry out on push rod, aerofluxus can be made so more accurate, inject simpler.
2, the movable chaste tree wheel of inner triangle, can allow the feedback that people obtains acoustically in use, avoids misprinting waste medicinal liquid.
3, the parts in this utility model are fairly simple, are easy to processing.Fit on is also fairly simple.Can reduce costs from economic benefit.
4, this utility model compact structure, is easy to carry about with one.For user brings convenience, be also beneficial to protection patients ' privacy simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of Fig. 1 along A-A direction;
Fig. 3 is the structural representation of push rod described in the utility model;
Fig. 4 is the structural representation of the movable chaste tree wheel of triangle described in the utility model;
Fig. 5 is the structural representation of pen core shell described in the utility model;
Fig. 6 is positioning joint structural representation described in the utility model.
Labelling in figure: 1, push rod; 2, female thread axle sleeve; 3, the movable chaste tree wheel of triangle; 4, pen core shell; 5, spring; 6, positioning joint.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of injection pen, comprise pen core shell 4, run through the push rod 1 of described pen core shell 4, be arranged at the female thread axle sleeve 2 of described pen core shell 4 inside, the movable chaste tree wheel 3 of triangle, spring 5 and be connected in the positioning joint 6 of described pen core shell 4 lower end, described push rod 1 is provided with the screw thread of certain length, and is close in screw thread end and is provided with chaste tree pawl; Described female thread axle sleeve 2 spiral is fixed on screw thread place on described push rod 1; The movable chaste tree wheel 3 of described triangle is nested on described push rod 1, is meshed with chaste tree pawl on described push rod 1; Two grooves are provided with along its length at described pen core shell 4 inwall, correspondingly, the sidewall of the movable chaste tree wheel 3 of described female thread axle sleeve 2 and described triangle is all symmetrically arranged with along its length two with the fin of described groove match, one is to ensure that the movable chaste tree wheel 3 of described threaded sleeve 2 and described triangle can not relatively rotate in push rod 1 is in rotation exhaust process, and two to make described threaded sleeve 2 and the movable chaste tree of described triangle take turns 3 in injection process be that track moves up and down along groove.
Described spring 5 is nested on described push rod 1, and its one end and the movable chaste tree of described triangle are taken turns 3 and abut against, and the other end and described positioning joint 6 abut against; Described positioning joint 6 is socketed on described push rod 1, and its one end is provided with two fins, and be connected in the groove of described pen core shell 4 inwall, the other end is provided with screw thread, for fixing medicine bottle.
On described push rod 1, the length of reach and described female thread axle sleeve 2 is 4mm.
On described push rod 1, the pitch of screw thread is 1mm, and accordingly, the female thread pitch of described female thread axle sleeve 2 is 1mm.
Described spring 5, initially in compressive state, ensures that the movable chaste tree wheel 3 of triangle closely engages all the time with chaste tree pawl on described push rod 1.
Operation principle:
(1) pitch designing threaded portion on push rod 1 is 1mm, and reach is 4mm, and the angle of the circumference rotation of each rake tooth on the movable chaste tree wheel 3 of triangle is 10.44 ° and (namely ensures that the minimum capacity of each scale is 1 μ l.)
(2), in use, first by push rod 1 to anticlockwise 104.4 ° (ten scales namely on the movable chaste tree wheel 3 of triangle), mark can be carried out on shell, guarantee the accuracy of aerofluxus.If aerofluxus does not have emptying, then can continue multiple rotary aerofluxus, the movable chaste tree wheel 3 of triangle can make aerofluxus feedback device.
(3), after aerofluxus terminates, press push rod 1 directly to lower, realize directly advancing injection.Now the movable chaste tree wheel 3 of triangle also can move downward along pen core shell 1 inboard wall groove.Due to the effect of positioning joint 6, injection volume can be ensured.
(4), after injection terminates, push rod can resilience under the effect of spring 5.And then reversely rotate push rod 1 (movable for triangle chaste tree wheel 3 is return initial injection position) to original position.
The foregoing is only specific embodiment of the utility model; be not limited to this utility model; all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. an injection pen, comprise pen core shell, it is characterized in that: also comprise the push rod running through described pen core shell, be arranged at the female thread axle sleeve of described pen core shell inside, the movable chaste tree wheel of triangle, spring and be connected in the positioning joint of described pen core shell lower end, described push rod is provided with the screw thread of certain length, and is close in screw thread end and is provided with chaste tree pawl; Described female thread axle sleeve spiral is fixed on screw thread place on described push rod; The movable chaste tree wheel of described triangle is nested on described push rod, is meshed with chaste tree pawl on described push rod; Described spring is nested on described push rod, and its one end and the movable chaste tree of described triangle are taken turns and abut against, and the other end and described positioning joint abut against; Described positioning joint is socketed on described push rod.
2. a kind of injection pen according to claim 1, it is characterized in that: be provided with two grooves along its length at described pen core shell inwall, correspondingly, the sidewall of the movable chaste tree wheel of described female thread axle sleeve and described triangle is all symmetrically arranged with along its length two with the fin of described groove match.
3. a kind of injection pen according to claim 1, is characterized in that: on described push rod, reach is no longer than the length of described female thread axle sleeve.
4. a kind of injection pen according to claim 3, is characterized in that: on described push rod, reach is 3 ~ 5mm.
5. a kind of injection pen according to claim 1 or 3, is characterized in that: on described push rod, the pitch of screw thread is 0.5 ~ 1.5mm, and accordingly, the female thread pitch of described female thread axle sleeve is 0.5 ~ 1.5mm.
6. a kind of injection pen according to claim 1, is characterized in that: described spring is initially in compressive state.
7. a kind of injection pen according to claim 2, is characterized in that: described positioning joint one end is provided with two fins, and be connected in the groove of described pen core shell inwall, the other end is provided with screw thread, for fixing medicine bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860951.1U CN204446813U (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860951.1U CN204446813U (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204446813U true CN204446813U (en) | 2015-07-08 |
Family
ID=53653765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420860951.1U Withdrawn - After Issue CN204446813U (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204446813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474609A (en) * | 2014-12-30 | 2015-04-01 | 江苏华阳电器有限公司 | Injection pen |
-
2014
- 2014-12-30 CN CN201420860951.1U patent/CN204446813U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104474609A (en) * | 2014-12-30 | 2015-04-01 | 江苏华阳电器有限公司 | Injection pen |
| CN104474609B (en) * | 2014-12-30 | 2017-07-25 | 江苏华阳电器有限公司 | A kind of injection pen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160307 Address after: Wujin District of Jiangsu city of Changzhou province Luoyang 213000 town Cen Village Patentee after: JIANGSU DELFU MEDICAL DEVICES CO., LTD. Address before: 213000, 8 Village Road, Luoyang Town, Wujin District, Jiangsu, Changzhou Patentee before: Jiangsu Huayang Electrical Appliances Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20170725 |