Provided is a water shut-off structure, for a pipe joint, where component versatility can be improved without decreasing watertightness. A rubber packing 3 comprises: an annular first rubber member 4 where an inner circumferential surface 41 contacts an outer circumferential surface 100a of a pipe 100; an annular second rubber member 5 stacked on an outer peripheral surface 42 of the first rubber member 4 in a pipe radial direction Y of the pipe 100; and stacking retention means 6 for retaining the stacked state of the first rubber member 4 and the second rubber member 5. The first rubber member 4 is made of a rubber material that is harder than the second rubber member 5. In the stacked state of the first rubber member 4 and the second rubber member 5, an end part 43 on a receptacle part side of the first rubber member 4 protrudes further in a pipe axial direction X of the pipe 100 than an end part 53 on the receptacle part side of the second rubber member, and a portion of a protruding part 43a of the end part 43 is disposed between an inner end part 21a of the receptacle part and the outer circumferential surface 100a of the pipe 100. The second rubber member 5 faces a tapered surface 21c of the receptacle part 21.
F16L 21/04 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués les segments d'étanchéité étant comprimés par des organes mobiles selon l'axe
F16L 17/025 - Raccords avec garnitures adaptées à une étanchéité par pression de fluide avec segments d'étanchéité disposés entre la surface extérieure du tuyau et la surface intérieure d'un manchon ou d'une douille les segments d'étanchéité comportant des nervures radiales
F16L 21/02 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués
2.
PIPE DETACHMENT PREVENTING DEVICE FOR UNION NUT PIPE FITTING
Provided is a pipe detachment preventing device for a union nut pipe fitting that can keep a temporarily-assembled state and enables tightening work to be performed uniformly, while having a simple structure. A protruding portion has at least a flange portion 75 having a through hole 76 through which tightening means penetrates, and a wall portion 77 extending from the flange portion 75. An end portion 77a of the wall portion 77 opposed to another divisional component is formed so as to protrude toward the other divisional component relative to an end portion 73a of an arm 73 and a hook 72 opposed to the other divisional component. A retaining ring 7 has a compressively-deformable held member 8 through which the tightening means is inserted and which is held between the flange portions 75 opposed to each other. The compressively-deformable held member 8 forms a gap S between the end portions 77a of the wall portions 77 when a pair of divisional components are coupled by the tightening means and latched to a union nut 4 in a loose-fit state. The tightening means is tightened until the end portions 77a of the wall portions 77 come into contact with each other, thus tightening and fixing the pair of divisional components to an outer-peripheral surface of a pipe.
Provided is a pipe detachment preventing device for a union nut pipe fitting, with which it is possible to maintain a temporary assembled state and perform tightening work uniformly even though the structure is simple. A protruding part has at least flange parts 75 having through-holes 76 through which a tightening means passes, and wall parts 77 hanging from the flange parts 75. An end part 77a of each wall part 77 facing the other divided body is formed protruding farther toward the other divided body than a hook 72 and an end part 73a of an arm 73 facing the other divided body. A retaining ring 7 has a compressively deformable clamping member 8 through which the tightening means is inserted and which is clamped by the opposing flange parts 75. The compressively deformable clamping member 8 forms a space S between the end parts 77a of the wall parts 77 when the pair of divided bodies is linked by the tightening means and locked to a union nut 4 in a loosely fitted state. The tightening means is tightened until the end parts 77a of the wall parts 77 come into contact with each other, thereby tightening and fixing the pair of divided bodies to the outer peripheral surface of a pipe.
F16L 19/03 - Extrémités de tuyaux pourvues de colliers ou de brides formant corps ou non avec les tuyaux, maintenues en contact par un organe vissé avec segments d'étanchéité flexibles entre les surfaces d'étanchéité
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
F16L 27/12 - Raccords réglablesRaccords permettant un déplacement des parties raccordées permettant réglage ou déplacement sensiblement longitudinal
4.
Pipe detachment preventing device for union nut pipe fitting
x) of a retaining ring body (40A) is caused to be closer to a fitting body (2) and the other is moved away from the fitting body (2), when first protruding portions (41) and first facing portions (55) come into contact with each other and a pipe pulling force which stretches a joint pipe (100) is applied to the joint pipe (100).
F16L 27/12 - Raccords réglablesRaccords permettant un déplacement des parties raccordées permettant réglage ou déplacement sensiblement longitudinal
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
F16L 21/04 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués les segments d'étanchéité étant comprimés par des organes mobiles selon l'axe
F16L 19/065 - Raccords dans lesquels les surfaces d'étanchéité sont maintenues en contact par un organe, p. ex. un écrou à oreilles vissé dans, ou vissé sur une des parties du raccord dans lesquels le serrage radial est obtenu par une action de coincement entre les extrémités non déformées du tuyau le coincement étant obtenu au moyen d'un segment
The objective of the present invention is to provide a pipe retaining device for a pipe joint with which it is possible for a pipe detachment preventing force to be further improved without inserting an inner core, while employing a simple structure. This pipe retaining device is provided with a tilting mechanism (7) which, when a lock ring coupling portion (32) and an opposing portion (54) are in contact with one another, causes a lock ring (3A) to tilt toward a pipe axis direction relative to a reference plane (P) perpendicular to the central axis of a ring main body (30A), in such a way that a circumferential direction end portion (30x) of the ring main body (30A) is caused to approach a joint main body (2), and a circumferential direction central portion (30y) of the ring main body (30A) is caused to move away from the joint main body (2). A first surface (56) of the opposing portion (54) that opposes the lock ring coupling portion (32) is parallel to the reference plane P. Each of a plurality of second surfaces (34a, 34b) of the lock ring coupling portion (32) that oppose the opposing portion (54) is positioned within the same inclined plane (PI), which is inclined toward the pipe axis direction relative to the reference plane (P). A gap (B) between the first surface (56) and the inclined plane (PI) increases from the circumferential direction end portion (30x) towards the circumferential direction central portion (30y).
The objective of the present invention is to provide a pipe detachment preventing device for a union nut pipe fitting, with which it is possible to omit an inner core, and to prevent a pipe becoming detached from the pipe fitting even if a pulling force large enough to extend the pipe acts thereon. A linking and holding means (7) includes a tilting mechanism (8) which, when a first projecting portion (41) and a first opposing portion (55) are in contact with one another and a joined pipe (100) is loaded with a pipe pulling force extending the joined pipe (100), causes a lock ring (4A) to tilt toward a pipe axis direction (X) relative to a reference plane (P) perpendicular to a central axis (C) of a lock ring main body (40), in such a way that one of a circumferential direction central portion (40y) and a circumferential direction end portion (40x) of the lock ring main body (40A) is caused to approach a fitting main body (2), and the other is caused to move away from the fitting main body (2).
F16L 19/08 - Raccords dans lesquels les surfaces d'étanchéité sont maintenues en contact par un organe, p. ex. un écrou à oreilles vissé dans, ou vissé sur une des parties du raccord avec segments métalliques qui mordent dans la paroi du tuyau
F16L 21/04 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués les segments d'étanchéité étant comprimés par des organes mobiles selon l'axe
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
F16L 27/12 - Raccords réglablesRaccords permettant un déplacement des parties raccordées permettant réglage ou déplacement sensiblement longitudinal
A pipe coupling device includes: a joint body into which a joining pipe is inserted; a C-ring-shaped retaining ring that includes a flange part protruding from an outer peripheral surface thereof fixed onto an outer peripheral surface of the joining pipe; and a pressing plate having a recessed part for housing the flange part. The retaining ring further includes a second flange part protruding from the outer peripheral surface thereof. The pressing plate further includes a pair of through-holes through which the coupling members penetrate, and a second recessed part for housing the second flange part. The second flange parts are provided with a circumferential center portion of the ring body between them, and the pressing plates are provided with the circumferential center portion between them. The recessed part is located between the through-holes, and the second recessed part is located outward of the through-holes in the circumferential direction.
F16L 23/036 - Raccords à brides les brides étant raccordées par des organes tendus axialement caractérisés par les moyens de mise en tension, p. ex. colliers de serrage en forme de C ou boulons spécialement adaptés
F16L 23/024 - Raccords à brides les brides étant raccordées par des organes tendus axialement caractérisés par la façon dont les brides sont fixées ou forment une extension aux tuyaux
F16L 21/04 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués les segments d'étanchéité étant comprimés par des organes mobiles selon l'axe
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
10.
Pipe coupling device and construction method therefor
A pipe coupling device includes a joint body, a C-shaped retaining ring that includes a flange part radially protruding from an outer peripheral surface of the retaining ring, a pressing plate that includes a recessed part configured to house the flange part, and includes a front wall configured to face a rear end of the flange part. The joint body, the retaining ring, and the pressing plate are coupled together in an axial direction. The flange part has a substantially rectangular shape extending along the axial direction, and an inclined surface is formed on at least one of the rear end and the front wall. An inner end of the inclined surface is positioned closer to the joint body than an outer end thereof. The inner end is closer to a center axis of the joint body than the outer end. A gap is formed between the rear end and the front wall.
F16L 23/036 - Raccords à brides les brides étant raccordées par des organes tendus axialement caractérisés par les moyens de mise en tension, p. ex. colliers de serrage en forme de C ou boulons spécialement adaptés
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
F16L 23/032 - Raccords à brides les brides étant raccordées par des organes tendus axialement caractérisés par la forme ou la composition des brides
F16L 33/32 - Dispositions d'assemblage des manches avec des organes rigidesRaccords rigides pour manches, p. ex. éléments unitaires s'engageant à la fois dans deux manches comprenant uniquement des pièces disposées à l'extérieur des manches
11.
PIPE COMING-OFF PREVENTION DEVICE FOR PIPE JOINT, AND CONSTRUCTION METHOD THEREFOR
Provided are a pipe coming-off prevention device for a pipe joint and a construction method therefor, the device preventing a member from being deformed and broken due to tensile force occurring in a joining pipe to thereby ensure sufficient holding power of the pipe. A joint body (3) into which a joining pipe (2) is inserted, a C-ring-shaped retaining ring (4) which has a flange part (41) protruding from the outer peripheral surface thereof and is fastened and secured on the outer peripheral surface of the joining pipe (2) by a securing means, and a pressing plate (5) which has a recessed part for housing the flange part (41) therein are coupled by a coupling means. The flange part (41) is provided to extend along the axial direction of the joining pipe (2). A rear end (41a) of the flange part (41) and a front wall (51a) of the recessed part are disposed to face each other. A gap (10) which is maintained even when the retaining ring is fastened and secured is formed between the rear end (41a) and the front wall (51a).
F16L 21/06 - Raccords avec manchon ou douille avec manchon ou segment fractionné bridé autour des extrémités du tuyau
F16L 21/02 - Raccords avec manchon ou douille avec segments d'étanchéité élastiques entre le tuyau et le manchon ou entre le tuyau et la douille, p. ex. avec des segments roulants ou autres segments profilés préfabriqués
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
12.
PIPE DETACHMENT PREVENTING DEVICE FOR UNION NUT PIPE FITTING
Provided is a pipe detachment preventing device for a union nut pipe fitting, with which it is possible to maintain a temporary assembled state and perform tightening work uniformly even though the structure is simple. A protruding part has at least flange parts 75 having through-holes 76 through which a tightening means passes, and wall parts 77 hanging from the flange parts 75. An end part 77a of each wall part 77 facing the other divided body is formed protruding farther toward the other divided body than a hook 72 and an end part 73a of an arm 73 facing the other divided body. A retaining ring 7 has a compressively deformable clamping member 8 through which the tightening means is inserted and which is clamped by the opposing flange parts 75. The compressively deformable clamping member 8 forms a space S between the end parts 77a of the wall parts 77 when the pair of divided bodies is linked by the tightening means and locked to a union nut 4 in a loosely fitted state. The tightening means is tightened until the end parts 77a of the wall parts 77 come into contact with each other, thereby tightening and fixing the pair of divided bodies to the outer peripheral surface of a pipe.
F16L 19/03 - Extrémités de tuyaux pourvues de colliers ou de brides formant corps ou non avec les tuyaux, maintenues en contact par un organe vissé avec segments d'étanchéité flexibles entre les surfaces d'étanchéité
F16L 21/08 - Raccords avec manchon ou douille avec moyens additionnels de verrouillage
F16L 27/12 - Raccords réglablesRaccords permettant un déplacement des parties raccordées permettant réglage ou déplacement sensiblement longitudinal
The objective of the present invention is to provide a pipe retaining device for a pipe joint with which it is possible for a pipe detachment preventing force to be further improved without inserting an inner core, while employing a simple structure. This pipe retaining device is provided with a tilting mechanism (7) which, when a lock ring coupling portion (32) and an opposing portion (54) are in contact with one another, causes a lock ring (3A) to tilt toward a pipe axis direction relative to a reference plane (P) perpendicular to the central axis of a ring main body (30A), in such a way that a circumferential direction end portion (30x) of the ring main body (30A) is caused to approach a joint main body (2), and a circumferential direction central portion (30y) of the ring main body (30A) is caused to move away from the joint main body (2). A first surface (56) of the opposing portion (54) that opposes the lock ring coupling portion (32) is parallel to the reference plane P. Each of a plurality of second surfaces (34a, 34b) of the lock ring coupling portion (32) that oppose the opposing portion (54) is positioned within the same inclined plane (PI), which is inclined toward the pipe axis direction relative to the reference plane (P). A gap (B) between the first surface (56) and the inclined plane (PI) increases from the circumferential direction end portion (30x) towards the circumferential direction central portion (30y).
brevets
