CN208741744U - Infusion joint - Google Patents

Abstract

The utility model discloses an infusion connects relates to the infusion articles for use field, provides an infusion connects that can seal liquid hole by oneself. The infusion joint comprises a shell, a piston, a spring and a sealing gasket; a liquid hole and a partition board are arranged in the shell, the partition board divides the liquid hole into an outer hole and an inner hole, a limiting flange is arranged at the hole of the outer hole on the shell, and a communication hole for communicating the outer hole and the inner hole is arranged in the side wall of the shell; the piston is positioned in the outer hole and can move along the axial direction, and a liquid groove is formed in the surface of the piston; the sealing gasket is connected with the inner side of the limiting flange, and a sealing bulge is arranged on the sealing gasket; the spring is positioned between the piston and the bottom of the outer hole, the spring supports the piston to enable the piston to be attached and sealed with the sealing gasket, the sealing bulge seals the liquid groove, and the piston is positioned on the outer side of the joint of the outer hole and the communicating hole; when the piston moves inwards, the piston can be positioned on the inner side of the joint of the outer hole and the communicating hole, or the liquid groove can be opposite to the communicating hole. The utility model can be arranged on the transfusion tube, the valve or the connecting piece.

Description

Infusion connector

Technical field

The utility model relates to transfusion article field more particularly to a kind of infusion connectors.

Background technique

The connection structure being equipped with for connecting with other infusion parts is set up on perfusion tube, valve or connector.Connection knot There are two types of structures, and one kind having internal screw thread, and one kind having external screw thread, as shown in Figure 1, the connection of two kinds of connection structures can make two it is defeated Liquid members.The infusion connector of the utility model refers to that with externally threaded connection structure, this is practical for the ease of statement It is novel to be known as connector sleeve with internal thread connection structure.

Common infusion connector is very simple, including shell, is axially provided with liquid pores along shell in shell, housing outer surface is set It is equipped with external screw thread.This infusion connector does not have seal itself liquid pores function, after separating with connector sleeve, for confining liquid body opening It needs to install calparine cap on infusion connector, when connecting with connector sleeve again, and needs to remove calparine cap, affect infusion connector The convenience used also results in calparine cap waste

Utility model content

Technical problem to be solved by the utility model is: providing a kind of infusion connector for capableing of seal itself liquid pores.

In order to solve the above problem the technical solution adopted is that: infusion connector includes shell, is axially arranged in shell along shell There are liquid pores；It further include piston, spring and gasket；It is provided with partition in shell, liquid pores are divided into exit orifice and interior by partition Hole is provided with defining flange on shell at exit orifice aperture, the intercommunicating pore for being connected to exit orifice with inner hole is provided in housing sidewall； Piston is located in exit orifice and can move axially along exit orifice, and piston face is provided with liquid groove；On the inside of gasket and defining flange It connects, there is the seal convexity being adapted to liquid groove on gasket；Spring is between piston and exit orifice bottom hole, spring supporting Piston makes piston and gasket gluing, sealing, and seal convexity seals liquid groove, and piston is located at exit orifice and intercommunicating pore junction Outside；When moving in piston, piston can be located at the inside of exit orifice and intercommunicating pore junction or liquid groove can be with intercommunicating pore Face.

Further, the cross-sectional shape of liquid groove is arc.

The beneficial effects of the utility model are: when not connected connector sleeve, as shown in Figures 2 and 3, piston be located at outer end and with Gasket fitting, piston confining liquid body opening.When connecting with connector sleeve, as shown in figure 4, piston is located at inner end, liquid can be successively By connector sleeve, liquid groove, exit orifice, intercommunicating pore and inner hole, it is achieved that fluid passage is unobstructed.The utility model uses Assembly and disassembly calparine cap is not needed in the process, improves ease of use.

Detailed description of the invention

Fig. 1 is the infusion connector of the prior art and the connection status figure of connector sleeve；

Fig. 2 is the cross-sectional view of the infusion connector of the utility model；

Fig. 3 is the A-A cross-sectional view of Fig. 2；

Fig. 4 is the infusion connector of the utility model and the connection status figure of connector sleeve；

In the figure, it is marked as shell 1, liquid pores 11, exit orifice 111, inner hole 112, partition 12, defining flange 13, intercommunicating pore 14, Piston 2, liquid groove 21, spring 3, gasket 4, seal convexity 41, connector sleeve 5.

Specific embodiment

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

In order to provide a kind of infusion connector for capableing of seal itself liquid pores, as shown in Figures 2 and 3: infusion connector includes Shell 1, shell 1 is interior to be axially provided with liquid pores 11 along shell 1；It further include piston 2, spring 3 and gasket 4；Setting in shell 1 There is partition 12, liquid pores 11 are divided into exit orifice 111 and inner hole 112, are provided at 111 aperture of exit orifice on shell 1 by partition 12 Defining flange 13 is provided with the intercommunicating pore 14 for being connected to exit orifice 111 with inner hole 112 in 1 side wall of shell；Piston 2 is located at exit orifice 111 Interior and can move axially along exit orifice 111,2 surface of piston is provided with liquid groove 21；Connect on the inside of gasket 4 and defining flange 13 It connects, there is the seal convexity 41 being adapted to liquid groove 21 on gasket 4；Spring 3 is located between 111 bottom hole of piston 2 and exit orifice, Spring 3 supports piston 2 to make piston 2 and 4 gluing, sealing of gasket, and seal convexity 41 seals liquid groove 21, and piston 2 is located at exit orifice 111 with the outside of 14 junction of intercommunicating pore；When moving in piston 2, piston 2 can be located at exit orifice 111 and 14 junction of intercommunicating pore Inside or liquid groove 21 can be with 14 faces of intercommunicating pore.

When being connect with connector sleeve 5, as shown in figure 4, the inner tube of connector sleeve 5 inwardly pushes up piston 2, due to having liquid on piston 2 Body groove 21, piston 2 do not close the inner tube of connector sleeve 5, and liquid is able to enter liquid groove 21, then flows into exit orifice 111, then Inner hole 112 is flowed by intercommunicating pore 14 again, it is achieved that fluid passage is unobstructed.After connector sleeve 5 removes, spring 3 makes piston 2 It resets, piston 2 closes exit orifice 111.

The effect of liquid groove 21 is the inner tube for avoiding piston 2 from closing connector sleeve 5, and liquid is led to exit orifice 111, liquid The cross-sectional shape of body groove 21 is preferably arc, and correspondingly the cross-sectional shape of seal convexity 41 is also arc, it is ensured that Sealing effect of the gasket 4 to piston 2.

The utility model can be set on perfusion tube, valve or connector, one as perfusion tube, valve or connector Part.

Claims (2)

1. infusion connector, including shell (1), shell (1) is interior to be axially provided with liquid pores (11) along shell (1)；It is characterized by: Including piston (2), spring (3) and gasket (4)；It is provided with partition (12) in shell (1), partition (12) divides liquid pores (11) It is divided into exit orifice (111) and inner hole (112), is provided with defining flange (13) at exit orifice (111) aperture on shell (1), shell (1) The intercommunicating pore (14) for being connected to exit orifice (111) with inner hole (112) is provided in side wall；Piston (2) is located in exit orifice (111) and can It is moved axially along exit orifice (111), piston (2) surface is provided with liquid groove (21)；On the inside of gasket (4) and defining flange (13) It connects, there is the seal convexity (41) being adapted to liquid groove (21) on gasket (4)；Spring (3) is located at piston (2) and exit orifice (111) between bottom hole, spring (3) support piston (2) makes piston (2) and gasket (4) gluing, sealing, seal convexity (41) sealing Liquid groove (21), piston (2) are located at the outside of exit orifice (111) Yu intercommunicating pore (14) junction；When being moved in piston (2), piston (2) inside of exit orifice (111) and intercommunicating pore (14) junction can be located at or liquid groove (21) can be with intercommunicating pore (14) Face.

2. infusion connector according to claim 1, it is characterised in that: the cross-sectional shape of liquid groove (21) is arc.