CN209370641U - A kind of quick coupling - Google Patents

Abstract

The utility model provides a kind of quick coupling, it is related to the technical field of the jointing of male half coupling type structural member, aim to solve the problem that quick coupling structure in the prior art is cumbersome, fabricate defect at high cost, it includes joint body and snap ring, the inner hole of the joint body is equipped with the first thread segment close to one end, the snap ring includes lantern ring and several elastic card claws set on lantern ring one end, the lantern ring outer circle is equipped with the first auxiliary thread segment cooperated with the first thread segment, the elastic card claw is enclosed around lantern ring one to be arranged, and its one end far from lantern ring extends to form cone cell to lantern ring inner hole direction, hollow valve rod is inserted in the inner hole of the lantern ring, the valve rod outer circle is close to the lantern ring inner wall and is slid along lantern ring length direction outwardly against the elastic card claw, the joint body outer circle is equipped with close to the other end for connecting wait fill Second thread segment of device of air.The utility model have structure be simple and convenient to operate, the beneficial effect of save the cost.

Description

A kind of quick coupling

Technical field

The utility model relates to the technical fields of the jointing of male half coupling type structural member, more particularly, to a kind of fast quick access Head.

Background technique

Common various quick couplings currently on the market have a bite type screw-type and spring ball bead type, however both types Connector respectively have deficiency, due to using being threadedly coupled, whens assembly and disassembly, operates relatively complicated for the former, is not suitable for that the short time is needed frequently to fill The workplace torn open；Latter configuration is complicated, processes, assembles cumbersome, production cost is higher.Because providing a kind of simple for structure, operation The quick coupling of rapid-assembling/disassembling convenient, that rapid-assembling/disassembling can be achieved is this field technical issues that need to address.

To solve the above problems, the Chinese invention of Publication No. CN106641534A discloses a kind of quick coupling, including Joint body, clamping device, locking sleeve, the clamping device is fixedly connected on the outer wall of joint body, at claw When open configuration, male half coupling type structural member can be inserted receiving opening or extract from receiving opening；When claw is in contraction state When, male half coupling type structural member can be limited and be fixed in receiving opening；The locking sleeve can with position and and not with It is moved between position, when it is in not when with position, the claw of clamping device be in open configuration, when it is in position It sets, the claw of clamping device is in contraction state.

The relatively traditional quick coupling structure of the quick coupling that the invention provides compares, easy to use, without any Tool, assembly and disassembly work to male half coupling type structural member can be rapidly completed by only needing operator to apply lesser external force, but should Invention is still relatively complicated in configuration aspects, causes its processing and manufacturing at high cost.

Utility model content

The purpose of the utility model is to provide a kind of quick coupling, it is simple and convenient to operate with structure, save the cost Beneficial effect.

The above-mentioned purpose of utility model of the utility model has the technical scheme that

The inner hole of a kind of quick coupling, including joint body and snap ring, the joint body is equipped with first close to one end Thread segment, the snap ring include lantern ring and several elastic card claws set on lantern ring one end, the lantern ring outer circle and first spiral shell Line section is threadedly engaged, and the elastic card claw is enclosed around lantern ring one to be arranged, and its one end far from lantern ring extends to lantern ring inner hole direction Cone cell is formed, hollow valve rod is inserted in the inner hole of the lantern ring, the valve rod outer circle is close to the lantern ring inner wall and along set The sliding of ring length direction with outwardly against the elastic card claw, the joint body outer circle close to the other end be equipped with for connect to Second thread segment of air charging system.

By using above-mentioned technical proposal, the second thread segment is used to connect the inflating port of air charging system, and snap ring is threadedly coupled In joint body, to make elastic card claw be located in joint body, when valve rod is inserted in the inner hole of snap ring, due to elastic card claw Its one end far from lantern ring extends to form cone cell to lantern ring inner hole direction under natural conditions, and therefore, valve rod is inserted into one in snap ring When touching elastic card claw, elastic card claw can prevent its continuation from being internally inserted at end, only firmly press valve rod, ability at this time Enough it is flared out elastic card claw, to make to be inserted into the male half coupling structural tube insertion joint body in the inner hole of valve rod；When outer After fixing structure pipe is inserted, valve rod is unclamped, male half coupling structural tube is arranged in joint body to contract by elastic card claw It is interior, realize the quick connection of external fixing structure pipe；When needing to remove male half coupling structural tube, valve rod is pressed again, makes elasticity Claw is flared out, and is lost the locking effect of external fixing structure pipe, is then taken out male half coupling structural tube.The structure it is fast Quick coupling has the advantages that structure is simple, manufacturing cost is low and easy to operate.

The utility model is further arranged to: the lantern ring inner hole is equipped at least one of mounting groove along lantern ring length direction, The length of the mounting groove is less than the length of the lantern ring and the mounting groove is connected to the lantern ring far from the elastic card claw one End, the valve rod outer circle protrusion are equipped with the convex block cooperated with the mounting groove, and the mounting groove is close to described elastic card claw one end Back stop slot equipped with the arc for being located at same annulus position, the mounting groove are connected to the back stop slot, the depth of the back stop slot Not less than the depth of the mounting groove, the width of the back stop slot is greater than the length of the convex block, and the convex block is affixed on described stop When moving back slot far from the elastic card claw side, the minimum diameter of the elastic card claw is less than the internal diameter of the valve rod, the convex block When being affixed on the back stop slot close to claw side, through being greater than the internal diameter of the valve rod in the minimum of the elastic card claw.

By using above-mentioned technical proposal, after snap ring is installed in joint body, the convex block face on valve rod is pacified Tankage insertion rotates horizontally valve rod along back stop slot, makes the convex block and lantern ring on valve rod when convex block is inserted into the end of mounting groove Interior mounting groove is staggered, so that valve rod is arranged in snap ring, begins when needing elastic card claw to open, presses valve rod, keep convex block tight Back stop slot is pasted close to the side wall of elastic card claw side；When needing elastic card claw to be closed, valve rod is unclamped, valve rod is in elastic card claw It slides under elastic reaction and is set on its side wall far from elastic card claw side by back stop slot gear outward, elastic card claw is closed to centre It closes, and at this time due to there is the limitation of back stop slot, valve rod will not be deviate from out of snap ring, and total more has globality.

The utility model is further arranged to: the lantern ring is equipped with diameter far from described elastic card claw one end and is greater than the set The retaining ring of ring outer diameter is arranged with sealing ring on the lantern ring, and the sealing ring is pressed in the retaining ring and the joint body is tight Suffer one end of first thread segment.

By using above-mentioned technical proposal, sealing ring plays sealing function, prevents fluid from joint body and snap ring Between flow out.

The utility model is further arranged to: the inner hole of the joint body is equipped with far from one end of first thread segment Third thread segment, the third thread segment internal screw thread are connected with pressure ring, and the internal diameter of the pressure ring is less than male half coupling type structural member Seam allowance outer diameter.

By using above-mentioned technical proposal, when male half coupling structural tube is arranged in joint body by elastic card claw, pressure ring It gradually screws in joint body, and gradually pushes against male half coupling structural tube during screw-in, so that male half coupling structural tube It connects stronger, male half coupling structural tube is avoided to rotate and move after being stuck in joint body.

The utility model is further arranged to: the pressure ring is fixedly connected with sealant close to one end of the elastic card claw Pad.

By using above-mentioned technical proposal, seal gasket can play sealing between pressure ring and male half coupling structural tube and make With preventing fluid outflow on the outside of male half coupling structural tube.

The utility model is further arranged to: the pressure ring is set as Hexagon hole far from the inner hole of described claw one end.

By using above-mentioned technical proposal, pressure ring, can be by inserting allen wrench during screwing in joint body Enter in Hexagon hole and be screwed into, so that the screw-in of pressure ring is more convenient quickly.

The utility model is further arranged to: moving back for annular is equipped between first thread segment and the third thread segment The width of cutter groove, the setting of elastic card claw described in the escape face and the escape is greater than the elastic card claw in vertical side Upward projected length.

By using above-mentioned technical proposal, escape not only facilitates the processing of the first thread segment and third thread segment, drop The difficulty of processing of thread segment at low two, and escape is that enough spaces have been reserved in the stretching, extension of elastic card claw, is further protected The smooth implementation of scheme is demonstrate,proved.

The utility model is further arranged to: the valve rod is located at one end outside the joint body and is equipped with for pressing Flange.

By using above-mentioned technical proposal, flange end face area is larger.It conveniently presses with finger, keeps operation more convenient.

The utility model is further arranged to: the mounting groove is equipped with two in the symmetry direction on the lantern ring internal diameter Road, mounting groove described in per pass both correspond to one end of different back stop slots, and the back stop slot is from one end of connection mounting groove at two It is rotated to the same direction and extends and terminated before another back stop slot is connected to one end with mounting groove.

By using above-mentioned technical proposal, convex block rotates in back stop slot after sliding enters in back stop slot in mounting groove Angle is close to 180 degree, therefore valve rod is not easy to skid off out of snap ring, meanwhile, personnel can be according to valve rod during rotation valve rod It can continue to rotate to judge whether valve rod goes to the clearing end of mounting groove, and valve rod is rotated at any time in use Adjustment, prevents valve rod from deviating from use.

In conclusion the advantageous effects of the utility model are as follows:

By being packed into the card of one end setting taper in joint body in joint body internal screw thread Joining clasp, and in snap ring Pawl, while sliding plugs valve rod in snap ring, valve rod is squeezed by stretching out one end outside joint body from valve rod, to make elasticity Claw opens or closes, and realizes clamping as needed or unclamps the effect of male half coupling structural tube, connection is quickly, easy to use, system It makes at low cost.

Detailed description of the invention

Fig. 1 is the structural schematic diagram under the elastic card claw closed state in a kind of quick coupling that the utility model discloses.

Fig. 2 is the structural schematic diagram under the elastic card claw open configuration in a kind of quick coupling that the utility model discloses.

Fig. 3 is the structural schematic diagram of snap ring.

Fig. 4 is the A-A cross-sectional view of Fig. 3.

Fig. 5 is the structural schematic diagram of valve rod.

In figure, 1, joint body；11, the first thread segment；12, the second thread segment；13, third thread segment；14, escape； 2, snap ring；21, elastic card claw；22, lantern ring；23, mounting groove；24, back stop slot；25, retaining ring；3, valve rod；31, flange；32, convex Block；4, sealing ring；5, male half coupling structural tube；6, pressure ring；61, Hexagon hole；7, seal gasket.

Specific embodiment

The utility model is described in further detail below in conjunction with attached drawing.

Referring to Fig.1, Fig. 2 is a kind of quick coupling disclosed by the utility model, including joint body 1 and snap ring 2, connector The inner hole of ontology 1 is equipped with the first thread segment 11 close to one end, and referring to Fig. 3, snap ring 2 includes lantern ring 22 and is fixedly connected on lantern ring The one circle elastic card claw 21 of 22 one end, 22 outer circle of lantern ring are threadedly engaged with the first thread segment 11, and elastic card claw 21 is far from lantern ring 22 One end extend to form cone cell to 22 inner hole center position of lantern ring, hollow valve rod 3, valve rod 3 are inserted in the inner hole of lantern ring 22 Outer circle is close to 22 inner wall of lantern ring and is slid along 22 length direction of lantern ring outwardly against elastic card claw 21, reference Fig. 3, Fig. 4, lantern ring 22 inner holes are symmetrically equipped with twice mounting groove 23 along 22 length direction of lantern ring, the length of mounting groove 23 be less than the length of lantern ring 22 and Mounting groove 23 is connected to lantern ring 22 far from 21 one end of elastic card claw, and 3 outer circle of valve rod protrusion is equipped with the convex block 32 cooperated with mounting groove 23 (referring to Fig. 5), mounting groove 23 is provided with the back stop slot 24 of the arc positioned at same annulus position close to 21 one end of elastic card claw, often Road mounting groove 23 is connected to one end of different back stop slots 24, and back stop slot 24 is from one end of connection mounting groove 23 to Xiang Tongfang at two Extend to rotation and terminated before another back stop slot 24 is connected to one end with mounting groove 23, the depth of back stop slot 24 is equal to mounting groove 23 depth, the width of back stop slot 24 are greater than the length of convex block 32, and convex block 32 is affixed on back stop slot 24 far from 21 side of elastic card claw When, the minimum diameter of elastic card claw 21 is less than the internal diameter of valve rod 3, and convex block 32 is affixed on back stop slot 24 close to 21 side of elastic card claw When, the interior internal diameter through being greater than valve rod 3 of the minimum of elastic card claw 21.1 outer circle of joint body close to the other end be equipped with for connect to Second thread segment 12 of air charging system.

A kind of quick coupling that this embodiment of the utility model discloses during the installation process, first by snap ring 2 from joint body 1 On 11 place end of the first thread segment be screwed into, then by valve rod 3 convex block 32 be aligned snap ring 2 on mounting groove 23 be inserted into, when When convex block 32 is inserted into the bottom of mounting groove 23, the rotation of valve rod 3 about 180 degree is said at this time until valve rod 3 can not continue to rotate Bright valve rod 3 is to rotate to the end of back stop slot 24.

In use, male half coupling structural tube 5 is inserted into quick coupling from from 3 center of valve rod first, while manually Valve rod 3 is pressed, is butted on back stop slot 24 on the side wall of 21 one end of elastic card claw when valve rod 3 protrudes into the end in quick coupling When, elastic card claw 21 expands outwardly out under the promotion of 3 end of valve rod, so that male half coupling structural tube 5 be made smoothly to be inserted into, stops when outer After the end insertion of mouth structure pipe 5, valve rod 3 is unclamped, elastic card claw 21 is gathered under own resilient effect to centre at this time, from And male half coupling structural tube 5 is arranged in joint body 1, prevent it from falling off, and valve rod 3 under the action of elastic card claw 21 to It is outer sliding and be butted on side wall of the back stop slot 24 far from 21 one end of elastic card claw.

When needing to extract male half coupling structural tube 5, valve rod 3 is pressed again, makes valve rod 3 that elastic card claw 21 be pushed to open outward It opens, loses the locking effect of external fixing structure pipe 5, then take out male half coupling structural tube 5.

Referring to Fig. 5, in order to facilitate the bared end of manpower pressing valve rod 3, one end that valve rod 3 is located at outside joint body 1 is equipped with Flange 31 for pressing.

The principle of the setting is: the area of flange 31 is larger, and manpower facilitates force when pressing, while pressing also more Comfortably.

Referring to Fig.1, Fig. 2, it is more stable when in order to guarantee that male half coupling structural tube 5 is installed in joint body 1, in connector sheet The inner hole of body 1 is equipped with third thread segment 13 far from one end of the first thread segment 11, and 13 internal screw thread of third thread segment is connected with pressure ring 6, the internal diameter of pressure ring 6 is less than the seam allowance outer diameter of male half coupling structural tube 5, and pressure ring 6 is set as interior far from the inner hole of 21 one end of elastic card claw Hexagon ring 61.Meanwhile first escape 14 for being equipped with annular between thread segment 11 and third thread segment 13,14 face bullet of escape Property the setting of claw 21 and the width of escape 14 be greater than projected length in the vertical direction under 21 open configuration of elastic card claw.

When installing quick coupling, first pressure ring 6 can be screwed in from the third thread segment 13 on joint body 1, work as male half coupling When structural tube 5 is arranged in joint body 1 by elastic card claw 21, pressure ring 6 is gradually goed deep into precession into joint body 1, is being pressed 6 end face of pressure ring gradually pushes against male half coupling structural tube 5 during 6 precession of ring, so that the connection of male half coupling structural tube 5 is more firm Gu male half coupling structural tube 5 is avoided to rotate and move after being stuck in quick coupling.During the screw-in of pressure ring 6, it can be used interior It is screwed in Hexagon hole 61 on die nut insertion pressure ring 6, it is easier for installation laborsaving.

Referring to Fig.1, Fig. 2 set at two in this embodiment of the utility model to reinforce the leakproofness of quick coupling It sets: being provided with the retaining ring 25 that diameter is greater than 22 outer diameter of lantern ring far from 21 one end of elastic card claw in lantern ring 22 first, covered on lantern ring 22 Equipped with sealing ring 4, when snap ring 2 is fitted into joint body 1, sealing ring 4 is pressed in closely the first spiral shell of joint body 1 by retaining ring 25 One end of line section 11, so that fluid be avoided to flow out between snap ring 2 and joint body 1.

Secondly, pressure ring 6 is fixed viscous equipped with seal gasket 7 close to one end of elastic card claw 21.Seal gasket 7 can be in pressure ring Sealing function is played between 6 and male half coupling structural tube 5, prevents fluid from flowing out on the outside of male half coupling structural tube 5.

In above-mentioned setting, sealing ring 4 and 7 collective effect of seal gasket play dual sealing functions to quick coupling, improve The sealing performance of device.

The embodiment of present embodiment is the preferred embodiment of the utility model, and not limitation is originally practical new according to this The protection scope of type, therefore: the equivalence changes that all structures, shape, principle according to the utility model are done should all be covered by practical Within novel protection scope.

Claims (9)

1. a kind of quick coupling, it is characterised in that: including joint body (1) and snap ring (2), the inner hole of the joint body (1) Close to one end be equipped with the first thread segment (11), the snap ring (2) include lantern ring (22) and be set to lantern ring (22) one end it is several Elastic card claw (21), lantern ring (22) outer circle are threadedly engaged with first thread segment (11), the elastic card claw (21) around The circle of lantern ring (22) one setting, and its one end far from lantern ring (22) extends to form cone cell to lantern ring (22) inner hole direction, institute It states and is inserted in the inner hole of lantern ring (22) hollow valve rod (3), valve rod (3) outer circle is close to lantern ring (22) inner wall and edge The sliding of lantern ring (22) length direction is with outwardly against the elastic card claw (21), the joint body (1) is close to the outer of the other end Circle is equipped with for connecting the second thread segment (12) to air charging system.

2. a kind of quick coupling according to claim 1, it is characterised in that: lantern ring (22) inner hole is long along lantern ring (22) It spends direction and is equipped at least one of mounting groove (23), the length of the mounting groove (23) is less than the length of the lantern ring (22) and described Mounting groove (23) is connected to the lantern ring (22) far from the elastic card claw (21) one end, valve rod (3) the outer circle protrusion be equipped with The convex block (32) of mounting groove (23) cooperation, the mounting groove (23) is equipped with close to the elastic card claw (21) one end to be located at together The back stop slot (24) of the arc of one annulus position, the mounting groove (23) are connected to the back stop slot (24), the back stop slot (24) Depth be not less than the depth of the mounting groove (23), the width of the back stop slot (24) is greater than the length of the convex block (32), When the convex block (32) is affixed on the back stop slot (24) far from the elastic card claw (21) side, the elastic card claw (21) is most Small internal diameter is less than the internal diameter of the valve rod (3), and the convex block (32) is affixed on the back stop slot (24) close to elastic card claw (21) one When side, through being greater than the internal diameter of the valve rod (3) in the minimum of the elastic card claw (21).

3. a kind of quick coupling according to claim 1, it is characterised in that: the lantern ring (22) is far from the elastic card claw (21) one end is equipped with the retaining ring (25) that diameter is greater than the lantern ring (22) outer diameter, is arranged with sealing ring (4) on the lantern ring (22), The sealing ring (4) is pressed in one end of the retaining ring (25) and the joint body (1) closely first thread segment (11).

4. a kind of quick coupling according to claim 1, it is characterised in that: the inner hole of the joint body (1) is far from institute The one end for stating the first thread segment (11) is equipped with third thread segment (13), and third thread segment (13) internal screw thread is connected with pressure ring (6), the internal diameter of the pressure ring (6) is less than the seam allowance outer diameter of male half coupling structural tube (5).

5. a kind of quick coupling according to claim 4, it is characterised in that: the pressure ring (6) is close to the elastic card claw (21) one end is fixedly connected with seal gasket (7).

6. a kind of quick coupling according to claim 4, it is characterised in that: the pressure ring (6) is far from the elastic card claw (21) inner hole of one end is set as Hexagon hole (61).

7. a kind of quick coupling according to claim 4, it is characterised in that: first thread segment (11) and the third The escape (14) of annular is equipped between thread segment (13), elastic card claw (21) setting and institute described in escape (14) face The width for stating escape (14) is greater than the projected length of the elastic card claw (21) in the vertical direction.

8. a kind of quick coupling according to claim 1, it is characterised in that: the valve rod (3) is located at the joint body (1) one end outside is equipped with the flange (31) for pressing.

9. a kind of quick coupling according to claim 2, it is characterised in that: mounting groove (23) the Yu Suoshu lantern ring (22) Symmetry direction on internal diameter is equipped with twice, and mounting groove (23) described in per pass both corresponds to one end of different back stop slots (24), The back stop slot (24) rotates from one end of connection mounting groove (23) to the same direction and extends and in another back stop slot (24) at two It is terminated before being connected to one end with mounting groove (23).