CN208130225U - A kind of infusion of film surface identical tension is non-return to use rubber membrane cover - Google Patents
A kind of infusion of film surface identical tension is non-return to use rubber membrane cover Download PDFInfo
- Publication number
- CN208130225U CN208130225U CN201720466350.6U CN201720466350U CN208130225U CN 208130225 U CN208130225 U CN 208130225U CN 201720466350 U CN201720466350 U CN 201720466350U CN 208130225 U CN208130225 U CN 208130225U
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- China
- Prior art keywords
- bezel ring
- infusion
- return
- locating piece
- rubber
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- 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.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a kind of non-return rubber membrane covers of the infusion of film surface identical tension, rubber membrane cover includes rubber elastic membrane and cylindric bezel ring, rubber elastic membrane is slightly raised dome shape, the fixing end of bezel ring, is fixedly connected with rubber elastic membrane, the inner surface of bezel ring, is provided with the first locating piece, and the first locating piece is used to be cooperatively connected with buoyant member, it is characterised in that, the fixing end of bezel ring, is provided with the second locating piece, and the second locating piece with the bottom surface of buoyant member for connecting.The infusion of the film surface identical tension is non-return structurally reasonable with rubber membrane cover, it is arranged to dome shape slightly outstanding using by rubber membrane, and dual location structure is set on bezel ring, reduce the height of bezel ring, can suitably, to reduce the non-return consumption of raw materials amount with rubber membrane cover of single infusion.
Description
Technical field
The utility model relates to druggist rubber sundrier fields, and in particular to a kind of non-return use of infusion of film surface identical tension
Rubber membrane cover.
Background technique
In order to avoid the generation of venous transfusion blood back situation, bottom surface is arranged in the dropping liquid cylinder of perfusion tube as rubber in existing use
The buoyant member of glue film, when dropping liquid cylinder herb liquid liquid level is higher, buoyant member is in floating state, when dropping liquid cylinder herb liquid liquid level is because defeated
When liquid bottle liquid medicine exhausts and declines, the pressure of rubber membrane two sides is differed, and crosses buoyant member when being lower than minim pipette bottom end using liquid level
The pressure difference of self weight and film two sides, is sealed in rubber film on the liquid outlet of dropping liquid bottom of the tube.In the prior art, rubber membrane
Directly be bonded in buoyant member lower surface, technological deficiency is that the requirement to bonding agent is stringent, and using when one there is buoyant member
The case where with rubber film stripping, influence non-return effect.A kind of rubber membrane cover, including capping and lid are disclosed in CN204815084U
Ring, capping are planar rubber elastic membrane, are provided with the rubber parts in mating connection with the bottom surface of buoyant member on bezel ring,.
But it finds in actual use, the tension of rubber elastic membrane influences obviously, in the prior art non-return effect
Bezel ring, is cylindrical barrel body, and height is higher, and bezel ring, material is utilized on the top of bezel ring, in the part being cooperatively connected with buoyant member
Flexibility make caoutchouc elasticity mould be in low-tension state.Due to rubber membrane cover and drug contact, produced for Dispoable medical
Product, consumption is huge, and the raw material dosage of single bezel ring, is larger, and the connection structure of bezel ring, and buoyant member is unstable, artificial to fill
The phenomenon that with the locating piece dislocation matched is easy to appear, there are liquid to penetrate into the risk into buoyant member, eventually leads to non-return mistake
Effect.Therefore, it is necessary to which non-return to the infusion of film surface identical tension in the prior art carry out structure improvement with rubber membrane cover.
Utility model content
The purpose of the utility model is to overcome defect existing in the prior art, provide a kind of with Dual positioning part
The infusion of film surface identical tension is non-return to use rubber membrane cover.
In order to realize the above technical effect, the technical solution of the utility model is：A kind of infusion of film surface identical tension stops
Inverse rubber membrane cover, rubber membrane cover include rubber elastic membrane and cylindric bezel ring, which is characterized in that rubber elastic membrane is slightly convex
The dome shape risen, the fixing end of bezel ring, is fixedly connected with rubber elastic membrane, and the inner surface of bezel ring, is provided with the first locating piece, and first
Locating piece is used to be cooperatively connected with buoyant member, and the fixing end of bezel ring, is provided with the second locating piece, and the second locating piece is used for and floating
The bottom surface of part connects.
Above-mentioned slightly raised dome shape elastic rubber epiphragma can realize by the change of mold shape, and in the prior art
Planar rubber elastic membrane is compared, and rubber elastic membrane of spherical surface itself has lesser tension.Due to setting in above structure
Dome shape elastic rubber epiphragma, therefore the height of bezel ring, can suitably reduce.
In order to facilitate assembly, preferred technical solution is that the first locating piece is positioning convex ring or several positioning convex points, is determined
The central axis of position bulge loop and the central axis of bezel ring, coincide.Positioning convex ring in buoyant member concave ring or concave point match.
In order to guarantee that bezel ring, and elastic rubber epiphragma junction for regular circle, make elastic rubber epiphragma in uniform force
State, preferred technical solution is, the second locating piece is the positioning groove for positioning concave ring or at least two sections arcuations, two sections of arcs
The center of circle of the positioning groove of shape is located on the central axis of bezel ring,.
In order to increase the Assembly stability between rubber membrane cover and buoyant member, preferred technical solution is the freedom of bezel ring,
End opening diameter is slightly less than fixing end opening diameter.
In order to advanced optimize the uniform force state of elastic rubber epiphragma, preferred technical solution is at least two sections of arcs
The sum of central angle of positioning groove of shape is not less than 180 °.
The advantages of the utility model and beneficial effect are：
The infusion of the film surface identical tension is non-return structurally reasonable with rubber membrane cover, is arranged to slightly protrude using by rubber membrane
Dome shape, and dual location structure is set on bezel ring, reduce the height of bezel ring, can suitably, to reduce a single point
The non-return consumption of raw materials amount with rubber membrane cover of drop infusion.
Detailed description of the invention
Fig. 1 is the non-return structural schematic diagram with rubber membrane cover embodiment 1 of the infusion of the utility model film surface identical tension；
Fig. 2 is the assembling structure schematic diagram of embodiment 1 Yu buoyant member；
Fig. 3 is the non-return structural schematic diagram with rubber membrane cover embodiment 2 of the infusion of the utility model film surface identical tension.
In figure：1, rubber elastic membrane；2, bezel ring,；3, positioning convex ring；4, concave ring is positioned；5, positioning convex point；6, positioning groove.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and cannot be used as a limitation the protection model of limitation the utility model
It encloses.
Embodiment 1
As illustrated in fig. 1 and 2, the infusion of the film surface identical tension of embodiment 1 is non-return uses rubber membrane cover, and rubber membrane cover includes
Rubber elastic membrane 1 and cylindric bezel ring, 2, rubber elastic membrane 1 are slightly raised dome shape, the fixing end of bezel ring, 2 and elastic rubber
Glue film 1 is fixedly connected, and the free end inner surface of bezel ring, 2 is provided with the first locating piece, and the first locating piece is used to cooperate with buoyant member
Connection, the fixing end of bezel ring, are provided with the second locating piece, and the second locating piece with the bottom surface of buoyant member for connecting.
In embodiment 1, the first locating piece is positioning convex ring 3, and the central axis of the central axis and bezel ring, 2 of convex 3 coincides.
Second locating piece is positioning concave ring 4.The cross section that concave ring is positioned in embodiment 1 is " Ω " shape.It is corresponding, bezel ring,
Fixing end be provided with bulge loop corresponding with " Ω " shape concave ring.
Embodiment 2
As shown in figure 3, embodiment 2 the difference from embodiment 1 is that, the first locating piece be several positioning convex points 5.
The free end opening diameter of bezel ring, 2 is slightly less than the fixing end opening diameter of bezel ring, 2, as cone barrel.
Second locating piece of embodiment 2 is the positioning groove 6 of three sections of arcuations, and the center of circle of the positioning groove 6 of arcuation is located at lid
On the central axis of ring, the sum of central angle of three sections of arcuation positioning grooves is not less than 180 °.
In use, two locating pieces of buoyant member and two locating pieces of rubber membrane cover are in mating connection, especially position
Bulge loop or raised line in buoyant member bottom end are cooperatively connected with corresponding second locating piece, guarantee rubber elastic membrane be in tension compared with
Small state.
In comparison, the Assembly stability of the rubber membrane cover of embodiment 2 is more preferable.
In infusion cylinder, rubber elastic membrane contacts liquid level, and the gravity of buoyant member helps to guarantee between the two
Cooperation stablize.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these change
It also should be regarded as the protection scope of the utility model into retouching.
Claims (5)
1. a kind of infusion of film surface identical tension is non-return to use rubber membrane cover, rubber membrane cover includes rubber elastic membrane and cylindrical shape
Bezel ring, which is characterized in that rubber elastic membrane is slightly raised dome shape, and the fixing end of bezel ring, is fixedly connected with rubber elastic membrane,
The inner surface of bezel ring, is provided with the first locating piece, and the first locating piece is used to be cooperatively connected with buoyant member, the fixing end setting of bezel ring,
There is the second locating piece, the second locating piece with the bottom surface of buoyant member for connecting.
2. the infusion of film surface identical tension according to claim 1 is non-return to use rubber membrane cover, which is characterized in that first is fixed
Position part is positioning convex ring or several positioning convex points, and the central axis of positioning convex ring and the central axis of bezel ring, coincide.
3. the infusion of film surface identical tension according to claim 1 is non-return to use rubber membrane cover, which is characterized in that second is fixed
Position part is the positioning groove for positioning concave ring or at least two sections arcuations, and the center of circle of the positioning groove of two sections of arcuations is located in bezel ring,
In mandrel.
4. the infusion of film surface identical tension according to claim 1 is non-return to use rubber membrane cover, which is characterized in that bezel ring,
Free end opening diameter is slightly less than fixing end opening diameter.
5. the infusion of film surface identical tension according to claim 3 is non-return to use rubber membrane cover, which is characterized in that at least two
The sum of the central angle of positioning groove of section arcuation is not less than 180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720466350.6U CN208130225U (en) | 2017-04-28 | 2017-04-28 | A kind of infusion of film surface identical tension is non-return to use rubber membrane cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720466350.6U CN208130225U (en) | 2017-04-28 | 2017-04-28 | A kind of infusion of film surface identical tension is non-return to use rubber membrane cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208130225U true CN208130225U (en) | 2018-11-23 |
Family
ID=64283146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720466350.6U Expired - Fee Related CN208130225U (en) | 2017-04-28 | 2017-04-28 | A kind of infusion of film surface identical tension is non-return to use rubber membrane cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208130225U (en) |
-
2017
- 2017-04-28 CN CN201720466350.6U patent/CN208130225U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181123 Termination date: 20210428 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |