CN2553223Y

CN2553223Y - Fast joint for car nylon pipe air brake system

Info

Publication number: CN2553223Y
Application number: CN 02223142
Authority: CN
Inventors: 汤尚彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-28
Filing date: 2002-06-28
Publication date: 2003-05-28
Anticipated expiration: 2012-06-28

Abstract

The utility model relates to a joint for the automobile air brake system, in particular to a quick joint for the nylon tube air brake system of automobile, wherein, the inside of the joint body (1) is four-step inner round wall; a locking ring (6), a nylon tube grip holder (5), a pressing ring (4), a seal ring (3), and a bushing (2) are arranged in the joint body (1); the rear of the nylon tube grip holder (5) is circular ring column shaped, and the front part is annular and prismatic faces; the front inner conical surface of the locking ring (6) is adjacent to the middle outer conical surface of the hollow nylon tube grip holder (5); the front inner conical surface of the nylon tube grip holder (5) is adjacent to the rear outer conical surface of the pressing ring (4); the step-shaped front end of the pressing ring (4) is buckled with the step-shaped rear end of the seal ring (3). The prior automobile brake system adopts nylon tube generally and still adopts ferrule type tube joint, and has the disadvantages of inconvenient assembly and low efficiency. The utility model has the advantages of simple structure and direct insertion or disassembly of the nylon tube.

Description

The rapid pipe joint of vehicle nylon pipe air braking system

One, technical field

The utility model and brake system of car joint, especially vehicle nylon pipe air braking system rapid pipe joint.

Two, background technique

Automobile fuel feeding and braking system extensively adopt the nylon tube of price root, function admirable at present, to replace traditional metallic conduit.Pipeline at vehicle nylon pipe air braking system connects the linkage structure that still adopts traditional metallic conduit, and promptly Bite type fittings will use spanner when existing assembling, assembly space is again little, is awkward, and efficiency of assembling is low, deficiencys such as assembly quality is difficult to assurance, and labor intensity is big.

Three, summary of the invention

The purpose of this utility model provides a kind of simple in structure, the vehicle nylon pipe air braking system rapid pipe joint that can directly nylon tube be inserted or dismantle.

The technological scheme that the purpose of this utility model adopted is, include in the fittings body one end pipe lining that the front end cylindrical is tapering is housed, it becomes four step inner round wall in the fittings body pipe that inserts nylon tube one end, the diameter of its four steps inner round wall from outside to inside from large to small, and locking ring is housed successively, the nylon tube chuck, hold-down ring, seal ring, lining, the front end inner conical surface of locking ring and the rear portion of hollow are that the front portion of annulus post is that the middle part male cone (strobilus masculinus) of nylon tube chuck of annular prismatic face is adjacent, the inner conical surface of the annular prismatic face of nylon tube chuck is adjacent with the rear end male cone (strobilus masculinus) of hold-down ring, and the front end of hold-down ring is outer low and inner high stepped shape and seal ring rear end and is high outside and low outside stepped shape and is interlockingly connected.

The utility model, nylon tube collet front are that an end mill of annular prismatic face becomes pintongs, and the annular pointed tooth less than the nylon tube external diameter is arranged in its lobe.

When the utility model uses, when nylon tube inserts along lining, lining front end cylindrical is tapering and helps the insertion fast of nylon tube guiding, it will be with the nylon tube chuck to move forward together, when fitting to the male cone (strobilus masculinus) of hold-down ring in the inner cone of nylon tube chuck front end, the annular pointed tooth that mills in the pintongs opens, and nylon tube can be inserted on interior last step of fittings body along to by the nylon tube chuck; After insertion force was cancelled, the pintongs annular pointed tooth that is forced to a shape under the insertion force effect inwardly shrank, and stings tight nylon tube.If nylon tube is outwards dialled when taking off, nylon tube will be with the nylon tube chuck outwards to move back together, the inner conical surface of the middle part male cone (strobilus masculinus) of nylon tube chuck and locking ring is fitted at this moment, take off under the effect of power dialling, the annular pointed tooth that the inner conical surface of locking ring will make the nylon tube chuck mill in the pintongs inwardly tightens up, and nylon tube is tightly clipped.If nylon tube is disassembled, as long as the nylon tube chuck is inwardly pushed away, be subjected to the effect of hold-down ring, the annular pointed tooth that mills in the pintongs is opened, can transfer to like a cork.The inner ring surface that adopts rubber to make seal ring is close to the periphery of Buddhist nun's pipe, the inner headed face that periphery is close to fittings body, thereby reaches the purpose of sealing.

The utlity model has simple and compact for structurely, make simply, assembling, convenient disassembly reduce labor intensity, and seal characteristics such as reliable.

Four, description of drawings

Further specify the utility model below in conjunction with accompanying drawing.

Accompanying drawing is the sectional structure schematic representation that the utility model is equipped with nylon tube.

Among the figure: 1-fittings body 2-lining 3-seal ring 4-hold-down ring 5-nylon tube chuck 6-locking ring 7-nylon tube

Five, embodiment

As shown in drawings, the nylon tube 7 of lining 2 is housed in fittings body 1 one ends, become four step inner round wall in fittings body 1 pipe, locking ring 6, nylon tube chuck 5, hold-down ring 4, seal ring 3, lining 2 are housed successively, the inner conical surface of one end of locking ring 6 and an end of hollow are that the other end of annulus post is that the middle part male cone (strobilus masculinus) of nylon tube chuck 5 of annular prismatic face is adjacent, one end male cone (strobilus masculinus) of the inner conical surface of the annular prismatic face of nylon tube chuck 5 and hold-down ring 4 is adjacent, the other end of hold-down ring 4 be outer low and inner high stepped shape and seal ring 3 one end faces be outer high in the paper stepped shape be interlockingly connected.

Claims

1, the rapid pipe joint of a kind of vehicle nylon pipe air braking system, include the lining (2) that the front end cylindrical is tapering is housed in fittings body (1) the one end pipe, it is characterized in that in inserting fittings body (1) pipe of nylon tube (7) one ends, becoming four step inner round wall, the diameter of its four steps inner round wall from outside to inside from large to small, and locking ring (6) is housed successively, nylon tube chuck (5), hold-down ring (4), seal ring (3), lining (2), the front end inner conical surface of locking ring (6) and the rear portion of hollow are that the front portion of annulus post is that the middle part male cone (strobilus masculinus) of nylon tube chuck (5) of annular prismatic face is adjacent, the rear end male cone (strobilus masculinus) of the inner conical surface of the annular prismatic face of nylon tube chuck (5) and hold-down ring (4) is adjacent, and the front end of hold-down ring (4) is outer low and inner high stepped shape and seal ring (3) rear end and is high outside and low outside stepped shape and is interlockingly connected.

2, a kind of vehicle nylon pipe air braking system according to claim 1 rapid pipe joint is characterized in that nylon tube chuck (5) is anterior for an end mill of annular prismatic face becomes pintongs, and the annular pointed tooth less than nylon tube (7) external diameter is arranged in its lobe.