CN102996955A

CN102996955A - Rapid connector for gas tight test

Info

Publication number: CN102996955A
Application number: CN201210533538XA
Authority: CN
Inventors: 张洪起; 古玉君
Original assignee: Tianjin Pengling Rubber Hose Co Ltd
Current assignee: Tianjin Pengling Rubber Hose Co Ltd
Priority date: 2012-12-07
Filing date: 2012-12-07
Publication date: 2013-03-27

Abstract

The invention relates to a rapid connector for a gas tight test. The rapid connector comprises a fixing splint (1), a valve core (2), a rubber gasket (3), a limiting bolt (4), an O-shaped ring (5), a shell (6), a compression spring (7) and a rotary pin (8), wherein the shell (6) is arranged on the fixing splint (1); a pin hole (15) for fixing the splint and a screw hole (11) on the shell are correspondingly positioned and connected by the rotary pin (8); the valve core (2) is arranged inside the shell; the rubber gasket (3) is arranged inside the valve core; a groove (9) is arranged outside the valve core; the O-shaped ring (5) is arranged in the groove; an outer ring (18) is arranged on the valve core; the compression spring (7) is sleeved on the outer ring (18); and a key groove (10) on the valve core is movably connected with a screw hole (14) on the shell through the limiting screw (4). The rapid connector provided by the invention has the advantages of reasonable structural design, convenience in operation, simple manufacturing, wide applicable range, and convenience in popularization and application.

Description

A kind of air tightness test rapid pipe joint

Technical field

The present invention relates to a kind of air tightness test rapid pipe joint, especially be applied to the air tightness test operation in the pipelines of automobile air conditioner production process.

Background technique

In the production process of pipelines of automobile air conditioner, in order to guarantee the sealing of product, must carry out 100% air tightness test to product, so just required a kind of airtight fixture, one end of pipeline is connected with charger fast, be filled with gas, and the other end can seal fast, then whether testing product has leakage in water; In addition, because the pipelines of automobile air conditioner product category is a lot, very large in batches.Like this, just need both easy-to-operaies of this airtight fixture, manufacture cost is low again.The airtight fixture that adopts at present need to manually be tightened screw workpiece is fixed; And when product is carried out airtight detection, need on workpiece, install in advance seal ring, and this seal ring will consign to client with workpiece, in order to guarantee quality of product, after finishing airtight detection, this seal ring must be changed again, has so both increased cost, has reduced again efficient; If a kind of rapid pipe joint has been arranged, namely can be lowered into this, can enhance productivity again.

Summary of the invention

The present invention is directed to above-mentioned problem a kind of quick coupling structure is provided, concrete technological scheme is as follows:

A kind of air tightness test rapid pipe joint of the present invention, it comprises fixing clamping plate 1, spool 2, rubber pad 3, stop screw 4, "O"-ring 5, housing 6, holddown spring 7 and rotation pin 8; Be provided with housing 6 on the fixing clamping plate 1, screw hole on fixing clamping plate pin hole 15 and the housing 11 is corresponding to be located by connecting by rotation pin 8; Be provided with spool 2 in the housing, be provided with rubber pad 3 in the spool, spool outer installment fluted 9, be provided with "O"-ring 5 in the groove, be provided with cylindrical 18 on the spool, cover has Compress Spring 7 on the cylindrical 18, and keyway 10 and the screw 14 on the housing on the spool are flexibly connected by stop screw 4.

When product is tested, at first with the taper pipe thread 12 and air tightness test equipment connection of rapid pipe joint, again workpiece 13 is connected with rapid pipe joint such as Fig. 4, open air tightness test equipment, test gas enters workpiece by F direction as shown in Figure 4, then with workpiece and rapid pipe joint together submerged (air tightness test equipment is provided with tank), whether Bubble formation is arranged on the visual observations workpiece, thereby judge whether workpiece has leakage phenomenon, and the position of leaking.

Rubber pad of the present invention is packed in the spool, and spool reinstalls in the housing, and spool and housing all are metals, seal with anti-leak with "O"-ring between them; With this structure detection metal workpiece the time, the end face of metal workpiece contacts with rubber pad, prevents the leakage between workpiece and the spool; In structure of the present invention, "O"-ring and rubber pad have played the effect of sealing, have guaranteed the sealing of structure of the present invention; After the pressurized air with certain pressure enters from housing one end, can directly enter workpiece, whether detect workpiece has leakage.Workpiece fixing in this structure is that the active force of pressured tight spring is finished in addition; Spool can move axially in housing, and the active force of pressured tight spring and the resiliently deformable of rubber pad make fixing clamping plate, workpiece and rubber pad close contact, and workpiece and rapid pipe joint are fixed; Be provided with two semicircle keyways on opposite at spool, the length L size of Woodruff key slots and keyways should be greater than the maximum compressibility of Compress Spring; Spacing with two position-limitting pins, namely guarantee spool moving axially in housing, prevent that again spool from skidding off from housing; Be provided with two pin holes in opposite in the rear end of housing, with between the fixing clamping plate with two the rotation pins be connected, housing can freely be rotated, the convenient assembling and disassembling workpiece.

Reasonable in design of the present invention, easy-to-operat is made simple, applied widely, easy to utilize.

Description of drawings

Fig. 1 is the plan view (analysing and observe) of this patent structure;

Fig. 2 is the plan view (analysing and observe) of this patent structure;

Fig. 3 is the first step schematic representation that workpiece is installed in the present invention;

Fig. 4 is the sectional view of workpiece installation in the present invention;

Fig. 5 is the three-view diagram of fixing clamping plate;

Fig. 6 is the three-view diagram of spool;

Fig. 7 is two views of housing.

Embodiment

Below with reference to accompanying drawing this patent implementation is described in further detail:

With reference to accompanying drawing 2, this patent structure comprises eight kinds of parts, is comprised of a fixing clamping plate 1, a spool 2, a rubber pad 3, two stop screws 4, a "O"-ring 5, a housing 6, a holddown spring 7 and two rotation pins 8.At first with reference to accompanying drawing 2, assemble this patent structure, "O"-ring 5 is put into the rectangle groove 9 of spool 2, holddown spring 7 is enclosed within to be provided with on the spool on the cylindrical 18 puts into housing, the spool 2 that "O"-ring 5 is housed is packed in the housing, rotary spool, make the Woodruff key slots and keyways 10(on two opposites on the spool as shown in Figure 6) with housing on two screw hole 14(as shown in Figure 7) substantially align, be screwed into respectively two position-limitting pins 4, the position-limitting pin amount of being screwed into, with the strength with hand spool is endwisely slipped in housing, can not make again spool deviate from housing and be advisable.With two pin hole 15(of the housing that assembled as shown in Figure 7), with two screw hole 11(on the fixing clamping plate as shown in Figure 5) substantially align, be screwed into two and rotate pins 8, rotate the amount of being screwed into of pin, rotate freely in stationary platen with housing and be advisable.At this moment, this rapid pipe joint assembling is finished, and with taper pipe thread 12 and the air tightness test equipment connection of housing rear end, just workpiece can be installed, and product is carried out airtight the detection.

When workpiece is installed, with reference to accompanying drawing 3, at first housing is lifted around the rotation of rotation pin, with workpiece 13 housing of packing into, with workpiece under the hand, make holddown spring 7 distortion, make the L1 size become minimum, and then rotary shell puts down, in the process of rotary shell, when the center of housing enters moment of fixing clamping plate inside, unclamp the hand of pushing down workpiece, housing rotary to workpiece planarization 16 is overlapped with fixing clamping plate inner plane 17, as shown in Figure 4, under the effect of the spring force of holddown spring, make sealing gasket, workpiece and fixing clamping plate fit tightly, and guarantee the sealing between sealing gasket and the workpiece.

Use the present invention to carry out airtight detection, reduced and installed and replacing seal ring operation, namely reduced cost of production, manufacturing efficiency is doubled.

Claims

1. air tightness test rapid pipe joint, it comprises fixing clamping plate (1), spool (2), rubber pad (3), stop screw (4), "O"-ring (5), housing (6), holddown spring (7) and rotation pin (8); It is characterized in that being provided with on the fixing clamping plate (1) housing (6), fixing clamping plate pin hole (15) is corresponding with screw hole (11) on the housing to be located by connecting by rotation pin (8); Be provided with spool (2) in the housing, be provided with rubber pad (3) in the spool, spool outer installment fluted (9), be provided with "O"-ring (5) in the groove, be provided with cylindrical (18) on the spool, the upper cover of cylindrical (18) has Compress Spring (7), and the screw (14) on the keyway on the spool (10) and the housing is flexibly connected by stop screw (4).