US 12,638,116 B2Granted

Tube joint

AssigneePanasonic Projector & Display Corporation

InventorsShigeyoshi Matsui, Toshihiko Matsuda

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Abstract

A tube joint connecting two tubes includes a female connector having an insert receptacle recessed in an axial direction that is an insertion direction, and a male connector having an insert that projects out and that is inserted in the insert receptacle in the axial direction. The female connector further includes: a pressing member; an inner seal member; a spring; an outer peripheral member that is connected to one end of the spring, that is biased in a direction opposite to the axial direction, and that abuts against the inner seal member while the male connector is not inserted; a spring enclosure; an outer seal member that seals a gap between the female connector and the male connector while the male connector is inserted; and an annular member that covers the outer seal member and the spring enclosure.

Claims14

Dependent claims

A tube joint for connecting and coupling two tubes having internals configured to pass a fluid therethrough, the tube joint comprising:

a female connector having a first tube having an inner side through which the fluid flows, and having an insert receptacle recessed in an axial insertion direction;
and
a male connector including a second tube having an inner side through which the fluid flows, and having an insert protruding in the axial insertion direction and configured to be inserted into the insert receptacle and coupled to the insert receptacle,
wherein the female connector includes:
a pressing member on an inner side of the insert receptacle;
an inner seal member disposed around the pressing member;
a spring disposed around the first tube;
an outer peripheral member connected to a first end of the spring, the outer peripheral member being biased in a direction opposite to the axial insertion direction by the spring, and configured to abut against the inner seal member when the male connector is not inserted in the insert receptacle;
a spring enclosure enclosing the spring;
an outer seal member configured to seal a gap between the female connector and the male connector when the male connector is inserted into the insert receptacle;
and
an annular member covering the outer seal member and the spring enclosure,
wherein the outer seal member is configured to seal a gap between the outer peripheral member and the annular member when the male connector is not inserted in the insert receptacle of the female connector,
wherein the annular member has a recess at a position between the outer seal member and the spring enclosure with respect to the axial insertion direction,
wherein the recess is recessed into an outer surface of the annular member in a radial direction of the annular member, and circumferentially extends along at least a part of a circumference of the annular member, and
wherein the recess is configured to deform in a direction opposite to the axial insertion direction when the spring enclosure expands.

13 more elements

A tube joint for connecting and coupling two tubes having internals configured to pass a fluid therethrough, the tube joint comprising:

a female connector having a first tube having an inner side through which the fluid flows, and having an insert receptacle extending in an insertion direction;
and
a male connector including a second tube having an inner side through which the fluid flows, and having an insert protruding and configured to be inserted into the insert receptacle and coupled to the insert receptacle,
wherein the female connector includes:
a pressing member on an inner side of the insert receptacle;
an inner seal member disposed around the pressing member;
a spring disposed around the first tube;
an outer peripheral member connected to a first end of the spring, the outer peripheral member being biased in a direction opposite to the insertion direction by the spring, and configured to abut against the inner seal member when the male connector is not inserted in the insert receptacle;
a spring enclosure enclosing the spring;
an outer seal member configured to seal a gap between the female connector and the male connector when the male connector is inserted into the insert receptacle;
and
an annular member covering the outer seal member and the spring enclosure,
wherein the outer seal member is configured to seal a gap between the outer peripheral member and the annular member when the male connector is not inserted in the insert receptacle of the female connector,
wherein the annular member has a recess at a position between the outer seal member and the spring enclosure with respect to a longitudinal axis of the annular member,
wherein the recess is recessed into an outer surface of the annular member in a diameter direction of the annular member and circumferentially extends along at least a part of a circumference of the annular member, and
wherein the recess is configured to deform in a direction opposite to the axial insertion direction when the spring enclosure expands.

13 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/020,495Filed 14 Jan 2025 · continuation
Priority: JP 2022-11811625 Jul 2022
Published: US 2025/0146609 A18 May 2025
Granted: 26 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F16L 37/248
The coupling being co-axial with the pipe: bayonet-type couplings
F16L 37/34
At least one of two lift valves being opened automatically when the coupling is applied: at least one of the lift valves being of the sleeve type,…
F16L 51/00
Expansion-compensation arrangements for pipe-lines
F16L 37/138
Using hooks, pawls, or other movable or insertable locking members: using an axially movable sleeve