CN209634988U - A kind of truncated cone-shaped polyisoprene gasket - Google Patents

Abstract

The utility model is in order to solve the problems, such as bottle cap side leakage, the utility model provides a kind of truncated cone-shaped polyisoprene gasket, it is characterized by comprising shim bodies, the shim body is in circular platform type, the shim body upper end diameter is less than lower end diameter, the outer lateral edge rotary table generatrix direction of the shim body is equipped with several ring fins, the utility model is integrally a reversed round bench shaped, considerably increase the contact area of outer cover Yu gasket side, multiple obstruction is carried out to product side flowing water by ring fin, enhances the sealing performance of product side.

Description

A kind of truncated cone-shaped polyisoprene gasket

Technical field

The invention belongs to medical rubber stopper more particularly to transfusion rubber plug, and preparation method thereof.

Background technique

13 type polyisoprene gasket of φ, because its size is small, traditional gasket construction design, product is with inside and outside poly- third After the cooperation of alkene combined cap, usually there is side leakage situation, especially under slightly pressure condition, side leakage is more serious, makes to most of For gasket producer with 13 ting model of φ, side leakage situation brings many hidden danger to drug quality.In order to fundamentally solve this One problem, devises a kind of Novel gasket of truncated conical shape, and the sealing performance for the side that new product greatly reinforces prevents completely Side leakage problem.

Summary of the invention

For the utility model in order to solve the problems, such as bottle cap side leakage, the utility model provides a kind of truncated cone-shaped polyisoprene pad Piece, it is characterised in that: including shim body, the shim body is in circular platform type, and the shim body upper end diameter is less than lower end Diameter, the outer lateral edge rotary table generatrix direction of the shim body are equipped with several ring fins.

Preferably, the ring fin is two, the distance between two described ring fins are 2-3mm.Two rings To water, from side, outflow carries out multiple blocking to shape fin, prevents water from flowing out from side.

Further, the ring fin is two, and the distance between two described ring fins are less than the annular wing The length of piece.

Preferably, the ring fin is with a thickness of 0.5mm.Ring fin is coupled when installing with outer cover, close to outer Lid inner wall is easy to appear if too thick and installs situation not in place.

Further, the shim body bottom is additionally provided with mounting groove, and the mounting groove is surrounded by positioning ring.

Preferably, the mounting groove is coupled with inner cover.The inner cover and mounting groove cooperate, and squeeze positioning ring, , close to outer cover inner wall, contact area will be increased on the outside of positioning ring, prevents gap outflow of the hydraulic fluid side between outer cover and gasket.

The utility model has the advantages that it is a reversed round bench shaped that the 1, present invention is whole, the inside and outside lid of polypropylene and gasket side are considerably increased The contact area in face enhances the sealing performance of product side.

2. positioning ring design of the invention, exterior and interior cover is assembled in compaction process, and inner cover is by retaining ring portion to circumferencial direction It extrudes, such gasket covers tightly close fit with inside and outside, enhances sealing performance, has prevented gap of the medical fluid between outer cover and gasket The possibility of outflow.

3. the design of counter bore structure of the present invention reduces needle thorn thickness, to reduce puncture force, while avoiding puncture The fragmentation problem being likely to result in the process also facilitates medical staff and punctures operation.

4. ring fin of the invention, using the structure of reversed acanthoid, multi-layer annular fin can not be flowed out by water from side, increase Strong waterproofness.

Detailed description of the invention

Fig. 1 is the discontiguous structural schematic diagram of the utility model ring fin；

Fig. 2 is the discontiguous sectional view of the utility model ring fin；

Fig. 3 is the structural schematic diagram of the utility model ring fin contact；

Fig. 4 is the discontiguous sectional view of the utility model ring fin；

Fig. 5 is the utility model assembling schematic diagram；

Fig. 6 is the utility model assembling section；

Fig. 7 is enlarged drawing at A in Fig. 6；

1, shim body；2, ring fin；3, positioning ring；4, mounting groove；5, counterbore；6, inner cover；7, outer cover

Specific embodiment

Embodiment 1

As shown in Figure 1, a kind of truncated cone-shaped polyisoprene gasket, it is characterised in that: including shim body 1, the gasket Ontology 1 is in circular platform type, and 1 upper end diameter of shim body is less than lower end diameter, the 1 outer lateral edge rotary table bus side of shim body To several ring fins 2 are equipped with, the present embodiment is illustrated with two ring fins 2, between two ring fins 2 away from From for 2-3mm, the ring fin 2 with a thickness of 0.5mm, if ring fin 2 is too thick, it is not in place to be easy to appear installation, pad Piece can rotate in outer cover 7.1 bottom of shim body is additionally provided with positioning ring 3, and the positioning ring 3 is enclosed mounting groove 4.The mounting groove 4 is coupled with inner cover 6.The inner cover 6 cooperates with mounting groove 4, squeezes positioning ring 3, will be outside positioning ring 3 Side increases contact area, prevents liquid side leakage close to 7 inner wall of outer cover.

Concrete mode: gasket is packed into along 7 inner wall of outer cover, by ring fin 2 close to 7 inner wall of outer cover, slightly left/right rotation Under dynamic, inner cover 6 is blocked to the inner wall of positioning ring 3, is packed into mounting groove 4, increases the contact area of gasket and outer cover 7, passes through gas Inner cover 6 is compacted by press.

Embodiment 2

Difference from Example 1 is: as shown in Figures 3 and 4, the ring fin 2 is two, two annular wings The distance between piece 2 is less than the length of the ring fin 2.The ring fin 2 prevents the liquid in bottle from gasket outer wall Outflow, gasket are kept structure more compact, are squeezed 7 inner wall of outer cover, more sticked on using the structure being close to, two ring fin contacts 7 inner wall of nearly outer cover, waterproof effect is more preferably.

Claims (8)

1. a kind of truncated cone-shaped polyisoprene gasket, it is characterised in that: including shim body (1), the shim body (1) is in circle Bench-type, shim body (1) upper end diameter are less than lower end diameter, and the outer lateral edge rotary table generatrix direction of shim body (1) is set There are several ring fins (2).

2. a kind of truncated cone-shaped polyisoprene gasket according to claim 1, it is characterised in that: the ring fin (2) It is two, the distance between two described ring fins (2) are 2-3mm.

3. a kind of truncated cone-shaped polyisoprene gasket according to claim 1, it is characterised in that: the ring fin (2) It is two, the distance between two described ring fins (2) are less than the length of the ring fin (2).

4. a kind of truncated cone-shaped polyisoprene gasket according to claim 1, it is characterised in that: the ring fin (2) With a thickness of 0.5mm.

5. a kind of truncated cone-shaped polyisoprene gasket according to claim 1, it is characterised in that: the shim body (1) Bottom is additionally provided with mounting groove (4), and mounting groove (4) side wall forms positioning ring (3).

6. a kind of truncated cone-shaped polyisoprene gasket according to claim 5, it is characterised in that: the mounting groove (4) It is coupled with inner cover (6).

7. a kind of truncated cone-shaped polyisoprene gasket according to claim 6, it is characterised in that: the shim body (1) Upper end is also provided with counterbore (5), and the counterbore (5) is in inverted round stage state, and counterbore (5) upper end diameter is greater than lower end diameter.

8. a kind of truncated cone-shaped polyisoprene gasket according to claim 7, it is characterised in that: the counterbore (5) is minimum Distance of the place apart from the mounting groove (4) is not more than 3mm.