Compact fluid couplings
Some fluid coupling devices described herein are configured as non-spill fluid couplings. In addition, some embodiments described in this document relate to fluid coupling devices and fluid coupling systems that are constructed in a compact configuration.
1 . A fluid coupling device comprising:
a housing defining an internal space and a fluid flow path that extends along a first axis and along a second axis, wherein the first and second axes are substantially perpendicular to each other, and wherein the housing defines a first end opening on the first axis and a second end opening on the second axis;
a valve assembly within the internal space and comprising a valve member that is movable along the second axis and spring-biased to a closed position that blocks the fluid flow path, wherein the valve member entirely fills the housing's second end opening when the valve member is in the closed position; and
a latch member coupled to the housing and movable relative to the housing along the first axis between a latched position and an unlatched position, wherein the latch member is configured to releasably latch the fluid coupling device to a mated fluid coupling device in a coupled arrangement that opens the fluid flow path, wherein the latch member comprises a surface and a biasing member that abuts the housing, the surface being depressible to deflect the biasing member to cause the latch member to move from the latched position to the unlatched position.
2 . The fluid coupling device of claim 1 , wherein the comprises a biasing member is configured to spring-bias the latch member away from the unlatched position and toward the latched position.
3 . The fluid coupling device of claim 2 , wherein the biasing member comprises a flexible cantilevered member.
4 . The fluid coupling device of claim 1 , wherein the latch member comprises an arcuate projection that is releasably engageable with the mated fluid coupling device.
5 . The fluid coupling device of claim 4 , wherein a leading end of the arcuate projection comprises a beveled surface.
6 . The fluid coupling device of claim 4 , wherein the arcuate projection extends less than 180 ° around the second axis.
7 . The fluid coupling device of claim 1 , wherein the valve member defines a seal recess, and further comprising a seal seated in the seal recess.
8 . The fluid coupling device of claim 7 , wherein a maximum outer diameter of the valve member is greater than an outer diameter of the seal.
9 . The fluid coupling device of claim 7 , wherein the housing defines an annular surface that is inclined at about 45° relative to the second axis, and wherein the seal abuts against the annular surface when the valve member is in the closed position.
10 . The fluid coupling device of claim 1 , wherein the housing is a single component, and wherein the fluid flow path extends entirely externally of the valve member.
11 . The fluid coupling device of claim 1 , wherein the biasing member is positioned closer to the first end opening along the first axis than the surface.
12 . A fluid coupling system comprising:
a male coupling device comprising:
a male housing defining an internal space and a fluid flow path that extends along a first axis and along a second axis, wherein the first and second axes are substantially perpendicular to each other, and wherein the male housing defines a first end opening on the first axis and a second end opening on the second axis;
a male valve assembly within the internal space and comprising a male valve member that is movable along the second axis and spring-biased to a closed position that blocks the fluid flow path, wherein the male valve member entirely fills the male housing's second end opening when the male valve member is in the closed position; and
a latch member coupled to the male housing and movable relative to the male housing along the first axis between a latched position and an unlatched position, wherein the latch member comprises a surface and a biasing member that abuts the housing, the surface being depressible to deflect the biasing member to cause the latch member to move from the latched position to the unlatched position; and
a female coupling device comprising:
a female housing defining an end opening configured to receive a portion of the male housing when the male and female coupling devices are releasably coupled to each other in an operable configuration that creates an open fluid flow path through the fluid coupling system,
wherein the female housing defines an internal groove that receives a portion of the latch member when the male and female coupling devices are releasably coupled to each other in the operable configuration.
13 . The fluid coupling system of claim 12 , wherein the latch member comprises an arcuate projection that is releasably engageable with the internal groove of the female housing.
14 . The fluid coupling system of claim 13 , wherein the arcuate projection extends less than 180° around the second axis.
15 . The fluid coupling system of claim 14 , wherein a leading end of the arcuate projection comprises a beveled surface.
16 . The fluid coupling system of claim 15 , wherein the female housing has a beveled surface surrounding the end opening, and wherein the beveled surface of the arcuate projection slides on the beveled surface so that the arcuate projection snaps into the internal groove without manual depression of the latch member as the male and female coupling devices are releasably coupled to each other.
17 . The fluid coupling system of claim 12 , wherein the internal groove is a circumferential internal groove.
18 . The fluid coupling system of claim 17 , wherein two portions of the internal groove extend completely through a wall of the female housing.
19 . The fluid coupling system of claim 12 , wherein the female coupling device further comprises a female valve assembly, wherein the female valve assembly comprises a valve stem and a valve sleeve, and wherein the valve stem forces the male valve member along the second axis to an open position as the male and female coupling devices are releasably coupled to each other.
20 . The fluid coupling system of claim 12 , wherein the male housing is a single component, and wherein the fluid flow path extends entirely externally of the valve member.