초록 ▼

The disclosure relates to a tube coupling having a coupling body with a throughway open at one end to receive a tube and an open ended housing on the body projecting from one end through which a tube may extend into the throughway in the body. A collet is located in the housing having an annular par

The disclosure relates to a tube coupling having a coupling body with a throughway open at one end to receive a tube and an open ended housing on the body projecting from one end through which a tube may extend into the throughway in the body. A collet is located in the housing having an annular part with resilient legs projecting towards the open end of the housing and terminating in jaws to engage an upset on the tube to hold the tube in the coupling body. The housing has an end region remote from its coupling body in which the collet jaws are constrained against expansion to release the tube and an intermediate region in which the ends may expand. A collet has arms projecting into and held in the throughway of the coupling body when a tube is present to restrain the collet so that the collet jaws are prevented from moving beyond the ends of the region of the housing to a position in which they could expand and release the tube.

대표청구항 ▼

A tube coupling comprising: a coupling body having a first throughway open at one end to receive a tube, a housing projecting from said one end of the coupling body and having a second throughway extending from a first end of the housing located proximal to the coupling body to a second end of the h

A tube coupling comprising: a coupling body having a first throughway open at one end to receive a tube, a housing projecting from said one end of the coupling body and having a second throughway extending from a first end of the housing located proximal to the coupling body to a second end of the housing located distal from the coupling body, wherein said second throughway is axially aligned with said first throughway such that the tube can extend through the second throughway of the housing and into the first throughway of the coupling body, a collet located for axial movement in said throughways, said collet having a substantially annular part located in the second throughway and formed with retention means which extend into said first throughway and which engage with a portion of the coupling body disposed in said first throughway for limiting axial movement of the collet in an axial direction away from the coupling body, the annular part of the collet being further provided with a plurality of resilient legs projecting toward the second end of said housing and terminating in inwardly extending projections which engage a formation on the tube to hold the tube in the collet, and wherein the housing has an end region proximal to the second end of the housing for engaging the collet legs at a limit of the collet movement in an axial direction away from the coupling body such that the collet legs are constrained against radial outward movement in order to prevent release of the tube from the collet, and wherein the housing has a recess means disposed in an intermediate region between said end region and the coupling body such that said recess means overlie the collet legs at a limit of collet movement in an axial direction towards the coupling body for allowing the collet legs to expand radially outward to release said formation on the tube and thereby allow the tube to be extracted from the coupling body.