Female joint having safety function
First Claim
1. A female coupling member having a safety function, to which a male coupling member can be detachably coupled, the female coupling member comprising:
- a coupling member body having a front end, a rear end, and a fluid passage extending through the coupling member body from the front end to the rear end in a direction of a longitudinal axis of the coupling member body, the coupling member body being configured to receive the male coupling member from the front end of the coupling member body; and
a valve member disposed in the coupling member body so as to traverse the fluid passage, the valve member having an opening extending therethrough in the direction of the longitudinal axis of the coupling member body, the valve member being displaceable between an open position and a closed position in a direction traversing the longitudinal axis of the coupling member body, wherein, in the open position, the valve member provides communication between a front end side of the fluid passage and a rear end side of the fluid passage through the opening, whereas, in the closed position, the opening is located outside the fluid passage so as to close communication between the front end side of the fluid passage and the rear end side of the fluid passage;
wherein the valve member has a purge passage configured to communicate with both the front end side of the fluid passage and an atmosphere outside the female coupling member when the valve member is in the closed position;
wherein the valve member is a plate-shaped member having a front surface facing the front end side of the fluid passage and a rear surface facing the rear end side of the fluid passage, the valve member being displaceable between the open position and the closed position by moving parallel to a plane parallel to the front surface and the rear surface; and
wherein the fluid passage has a circular cross section and the opening of the valve member is a crescent-shaped opening comprising an arcuate surface aligning with a circumferential surface of the fluid passage when the valve member is in the open position and a surface extending between opposite ends of the arcuate surface in a direction traversing a path along which the valve member is displaced between the open position and the closed position, the surface extending between the opposite ends of the arcuate surface being positioned closer to the fluid passage than the arcuate surface when the valve member is at the closed position such that, when the valve is displaced from the closed position toward the open position, the surface extending between the opposite ends of the arcuate surface first enters the fluid passage.
1 Assignment
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Accused Products
Abstract
A female coupling member includes a coupling member body having a fluid passage and being configured to receive a male coupling member from a front end thereof, and a valve member disposed in the coupling member body to traverse the fluid passage. The valve member has an opening and is displaceable between an open position and a closed position. In the open position, the valve member communicates between a front end side and a rear end side of the fluid passage through the opening. In the closed position, the opening is located outside the fluid passage to close communication between the front end side and the rear end side of the fluid passage. The valve member has a purge passage configured to communicate with both the front end side of the fluid passage and the atmosphere outside the female coupling member when the valve member is in the closed position.
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Citations
8 Claims
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1. A female coupling member having a safety function, to which a male coupling member can be detachably coupled, the female coupling member comprising:
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a coupling member body having a front end, a rear end, and a fluid passage extending through the coupling member body from the front end to the rear end in a direction of a longitudinal axis of the coupling member body, the coupling member body being configured to receive the male coupling member from the front end of the coupling member body; and a valve member disposed in the coupling member body so as to traverse the fluid passage, the valve member having an opening extending therethrough in the direction of the longitudinal axis of the coupling member body, the valve member being displaceable between an open position and a closed position in a direction traversing the longitudinal axis of the coupling member body, wherein, in the open position, the valve member provides communication between a front end side of the fluid passage and a rear end side of the fluid passage through the opening, whereas, in the closed position, the opening is located outside the fluid passage so as to close communication between the front end side of the fluid passage and the rear end side of the fluid passage; wherein the valve member has a purge passage configured to communicate with both the front end side of the fluid passage and an atmosphere outside the female coupling member when the valve member is in the closed position; wherein the valve member is a plate-shaped member having a front surface facing the front end side of the fluid passage and a rear surface facing the rear end side of the fluid passage, the valve member being displaceable between the open position and the closed position by moving parallel to a plane parallel to the front surface and the rear surface; and wherein the fluid passage has a circular cross section and the opening of the valve member is a crescent-shaped opening comprising an arcuate surface aligning with a circumferential surface of the fluid passage when the valve member is in the open position and a surface extending between opposite ends of the arcuate surface in a direction traversing a path along which the valve member is displaced between the open position and the closed position, the surface extending between the opposite ends of the arcuate surface being positioned closer to the fluid passage than the arcuate surface when the valve member is at the closed position such that, when the valve is displaced from the closed position toward the open position, the surface extending between the opposite ends of the arcuate surface first enters the fluid passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification