The present invention relates to a kind of for inflating to part to be measured to check the bubble-tight quick connection of part to be measured
Generally, in order to the empty interacvity air-filling of part to be measured to check its air-tightness, staff need exist
The outlet side (inlet end of gas tube connects air pump) of gas tube connects an adapter, and this adapter can
Being tightly connected the gas-charging connection of part to be measured, adapter generally uses with gas-charging connection to threaded and (inflates
Joint is that externally threaded title external screw thread connects, and now adapter becomes external screw thread adapter, and gas-charging connection is
The title female thread of female thread connects, and now adapter becomes inner thread connector), traditional screw thread coupling
It is connected with gas-charging connection by screwing, this screw thread coupling and gas-charging connection connection procedure time and effort consuming, and
Easily because screwing infringement black box.It is connected with the fast thread of gas-charging connection for making adapter realize, as
Shown in Fig. 1, prior art occurs in that a kind of screw thread coupling, this screw thread coupling include cylinder body 200,
Handle 100, claw 600, actuator 300 and mandrel 400；Claw 600 is surrounded by multiple clamping lobes,
And be arranged on one end of cylinder body 200, and claw 600 is at least partially extend in cylinder body 200, handle 100
It is arranged on cylinder body 200 other end, mandrel 600 and actuator 300 to be arranged in cylinder body 200, and passes through
Handle 100 drives actuator 300, claw 600 under the driving of actuator 300 at the axle of cylinder body 200
Move up that (if adapter is inner thread connector, the endoporus of claw 600 offers screw thread, handle 100
First claw 600 is driven to increase overhang so as to insert in the endoporus of gas-charging connection, then handle 100
Drive claw 600 to reduce overhang and mandrel 400 forces claw 600 swelling；If adapter is external screw thread
Adapter, the periphery of claw 600 offers screw thread, and first handle 100 drives claw 600 increase to stretch out
Amount so as to cladding gas-charging connection periphery, then handle 100 drive claw 600 reduce overhang with
Just cylinder body 200 is made to force claw 600 to be tightly coated with gas-charging connection) so that claw 600 and part to be measured
Gas-charging connection threaded, then by leading to the gas passage of part to be measured from air-filled pore to be measured zero
Inflation in part.
Although above-mentioned screw thread coupling is capable of being connected with the quick of gas-charging connection, but claw and inflation
The mechanical force being to be carried out by handle mode that moves axially of the screwing process of joint, i.e. claw is driven,
So certainly will expend the muscle power of user, and when in order to meet threaded steadiness, driving claw
Mechanical force needs to be arranged to very greatly, consequently, it is possible to cause user cannot pull the result of handle.
Summary of the invention
The above-mentioned technical problem existed for adapter of the prior art, the invention provides one can
The quick connector being connected with part to be measured by pneumatic realization and inflate to part to be measured.
For solving above-mentioned technical problem, the technical solution used in the present invention is:
A kind of quick connector, including claw, also includes: cylinder body, its first end offers total air inlet,
Second end is equiped with described claw；Piston, is arranged in described cylinder body and described claw can be driven along institute
State moving axially of cylinder body；First gas passage, its interior pressed gas is used for driving described piston towards institute
The second end stating cylinder body moves；Second gas passage, its interior pressed gas is used for driving described piston court
First end of described cylinder body moves, and after described claw is connected with part to be measured in described part to be measured
Stuffing pressure gas；And valve member, it is used for making described total air inlet connect with described first gas passage
And switch between connecting with described second gas passage.
Preferably, described valve member is the body being set on described cylinder body, and described body encloses with described cylinder body
Become an airtight space, described cylinder body offers and connects the first of described total air inlet and described space and lead
Pore, described body has primary importance and the second position, institute relative to the axial of described cylinder body or circumference
State and be formed with the first air inlet connected with described first gas passage on the periphery of cylinder body and with described
Second air inlet of two gas passage connections；And when described body is in described primary importance, described
One air inlet connects with described space and described second passage and described space disconnect, at described body
When the described second position, described second air inlet connects and described first air inlet and institute with described space
State space to disconnect.
Preferably, described space is the annular space of the two ends closure that described body surrounds with described cylinder body,
Described primary importance and the described second position are the described body two positions in the axial direction of described cylinder body,
And described first air inlet and described second air inlet are spaced setting with when described in the axial direction of described cylinder body
When body moves to described primary importance, described first air inlet connects with described annular space, when described
When body moves to the described second position, described second air inlet connects with described annular space.
Preferably, the axial distance between described first air inlet and described second air inlet is more than described ring
Shape space length in the axial direction.
Preferably, described piston to cylinder body described in major general be divided near described first end the first air cavity and
Near the second air cavity of described second end, described first gas passage is formed adjacent to the first of described cylinder body
Inside the entity of end, and described first gas passage connects with described first air cavity so that working as at described body
When primary importance, pressed gas enters described first air cavity and promotes described piston towards the second of described cylinder body
End is mobile.
Preferably, described claw is at least partially disposed in described second air cavity, and the endoporus of described claw passes through
Gap between the clamping lobe of claw connects with described second air cavity, and described second gas passage is with described
The endoporus of claw connects with when described body is in the second position, and pressed gas respectively enters described claw
Endoporus in part to be measured in stuffing pressure gas and described second air cavity to promote described piston to described
First end moves.
Preferably, described piston has first piston and the second piston, described first air cavity of fixing connection
Between described first piston and the first end of described cylinder body, described second air cavity is positioned at described second and lives
Between plug and the second end of described cylinder body.
Preferably, dividing plate, described first piston it are provided with between described first piston and described second piston
Be formed with the axle sleeve wearing described dividing plate towards described second end, described second piston overlaps in a fixed manner
Being located on described axle sleeve, described claw is arranged on the end of described axle sleeve.
Preferably, also include that one end is fixed with described cylinder body, the other end wear successively described first piston and
Described axle sleeve and the mandrel in stretching into the endoporus of described claw, be formed between described mandrel and described axle sleeve
The annulus connected with the endoporus of claw, described first piston is offered respectively with described annulus and
Second gas port of described second air inlet connection, described second gas passage at least includes described annulus
Gap and described second gas port.
Preferably, inducing QI chamber, described second air inlet it are formed with between described first piston and described dividing plate
Connect with described inducing QI chamber, described second gas port and described inducing QI chamber.
Compared with prior art, the quick connector of the present invention provides the benefit that: the present invention quickly connects
Connecing device makes total air inlet between connecting with the first gas passage and connecting with the second gas passage by valve member
Switching, thus utilize the pressed gas in the same gas tube being connected with total air inlet can realize claw
Driving (drive claw connect part to be measured) and inflate to part to be measured.
Accompanying drawing explanation
Fig. 1 is the structural representation of quick connector of the prior art；
Fig. 2 is the structural representation being in installment state of the quick connector of the present invention；
Fig. 3 is the structural representation being in inflated condition of the quick connector of the present invention.
10-cylinder body；The total air inlet of 11-；12-the first gas port；13-the first air inlet；14-the second air inlet
Hole；15-the first gas passage；20-claw；31-first piston；311-the second gas port；32-second
Piston；33-axle sleeve；40-mandrel；50-body；60-annular space；70-annulus；80-inducing QI
Chamber；91-the first air cavity；92-the second air cavity；101-part to be measured；102-dividing plate.
Detailed description of the invention
For making those skilled in the art be better understood from technical scheme, below in conjunction with the accompanying drawings and tool
The present invention is elaborated by body embodiment.
As shown in Figures 2 and 3, the preferred embodiments of the present invention provide a kind of quick connector, and this is fast
Speed adapter include claw 20, cylinder body 10, piston, first gas passage the 15, second gas passage with
And valve member.Cylinder body 10 can be integrated formed structure, it is also possible to the combinative structure connected for multistage, claw
20 the second ends being arranged on cylinder body 10, and equal with set-up mode and the working method of claw in prior art
Identical, the first end at cylinder body 10 offers total air inlet 11 vertically, and (certainly, total air inlet 11 can
To offer along multiple directions)；It is internal that piston is arranged on cylinder body 10, and is directly or indirectly connected with claw 20
To drive claw 20 moving axially along cylinder body 10；First gas passage 15 can be by being positioned at outside cylinder body 10
The pipeline in portion is formed or to be formed at cylinder body 10 internal, in the first gas passage 15 by total air inlet 11
The pressed gas provided is for driving piston to move towards the second end of cylinder body 10, so that piston driving claw
20 the second end of cylinder body 10 overhang increase to be connected with part 101 to be measured；Second gas leads to
It is internal that road also can be formed or be formed at cylinder body 10 by the pipeline being positioned at outside cylinder body 10, the second gas passage
In the pressed gas provided by total air inlet 11 for driving piston to move towards the first end of cylinder body 10,
So that piston driving claw 20 reduces at the overhang of the second end of cylinder body 10, and then make claw 20 and treat
Survey part 101 connect more firm and realize seal, and the second gas passage be additionally operable to claw 20
Stuffing pressure gas in the part to be measured 101 being tightly connected；Valve member is used for making total air inlet 11 with first
Gas passage 15 connects and switches between the connection of the second gas passage, i.e. valve member can make total air inlet
11 when connecting with the first gas passage 15, and total air inlet 11 and the second gas passage disconnect, total air inlet
11 when connecting with the second gas passage, and total air inlet 11 disconnects with the first gas passage 15.
From the foregoing, the quick connector of the present invention different from quick connector of the prior art it
Place is: the change of the overhang of the claw 20 of quick connector of the prior art is by manually passing through handle
Operation completes, and the change of the overhang of the claw 20 of the quick connector of the present invention is by the first gas passage
15 and second pressed gas in gas passage and control the valve member that pressed gas flows to and jointly complete.This
The quick connector of invention can reduce the labor intensity of operator.
The structure of the valve member being capable of above-mentioned functions can have multiple, e.g., if the first gas passage 15
Being to be arranged on the pipeline outside cylinder body 10 with the second gas passage, valve member can be the two-way switch of connecting line
Valve, as shown in Figures 2 and 3, in a preferred embodiment of the invention, valve member is for being set in cylinder body
Body 50 on 10, body 50 and cylinder body 10 surround an airtight space, the company of offering on cylinder body 10
Logical total air inlet 11 and first gas port 12 in described space, body 50 is axial relative to cylinder body 10
Or circumference has primary importance and the second position, the periphery of cylinder body 10 is formed and the first gas passage
15 the first air inlets 13 connected and the second air inlet 14 connected with the second gas passage；And when set
When body 50 is in primary importance, the first air inlet 13 connects with space and the second air inlet 14 breaks with space
Opening, when body 50 is in the second position, the second air inlet 14 connects and the first air inlet 13 with space
Disconnect with space.
From the foregoing, the body 50 as valve member can rotate or move axially change and the first gas leads to
Road 15 and the on off operating mode of the second gas passage.If valve member is capable of its function by rotation, need to be made
One air inlet 13 and the second air inlet 14 are positioned at the same cross section of cylinder body 10, and have certain in the circumferential
Distance (or radian), the airtight space that body 50 and cylinder body 10 surround can not be along the circumference of cylinder body 10
Through, can not be i.e. the space of annular.
In a preferred embodiment of the invention, valve member realizes its function by moving axially, body 50
The annular space that airtight space is the two ends closure that body 50 surrounds with cylinder body 10 surrounded with cylinder body 10
60, primary importance and the second position are the body 50 two positions in the axial direction of cylinder body 10, and first
Air inlet 13 and the second air inlet 14 are spaced setting to move to when body 50 in the axial direction of cylinder body 10
During primary importance, the first air inlet 13 connects with annular space 60, when body 50 moves to the second position
Time, the second air inlet 14 connects with annular space 60.
For preventing in the whole moving process of body 50, the first air inlet 13 and the second air inlet 14 occurs
Situation about simultaneously connecting with annular space 60 occurs, and makes between the first air inlet 13 and the second air inlet 14
Axial distance more than annular space 60 length in the axial direction.So, body 50 is in whole axial shifting
During Dong, annular space 60 can only connect with in the first air inlet 13 and the second air inlet 14.
In a preferred embodiment of the invention, the first gas passage 15 is formed at the inside of cylinder body 10,
Specifically, piston to major general's cylinder body 10 is divided near the first air cavity 91 of the first end with near the second end
The second air cavity 92, the first gas passage 15 is formed adjacent to inside the entity of the first end of cylinder body 10,
Its one end connects with the first air inlet 13, and its second end and the first air cavity 91 connect, and so, work as body
50 when being in primary importance, and pressed gas, through the first gas port 12, enters annular space 60, then through the
One air inlet 13 enters the first gas passage 15 and enters the first air cavity 91, and pressed gas is at the first air cavity
Piston is promoted to move towards the second end of cylinder body 10 in 91.
In a preferred embodiment of the invention, the second gas passage is formed at the inside of cylinder body 10, and
And make claw 20 be at least partially disposed in the second air cavity 92, the endoporus of claw 20 folder by claw 20
The gap held between lobe connects with the second air cavity 92, and the second gas passage connects with the endoporus of claw 20.
So, when body 50 is in the second position, pressed gas enters through the first gas port 12, enters ring
Shape space 60, then through the second air inlet 14 enter the second gas passage and by the clamping lobe of claw 20 it
Between gap enter the second air cavity 92, pressed gas promotes piston towards cylinder body 10 in the second air cavity 92
First end moves, and is filled to part 101 to be measured by the endoporus of claw 20.
As further preferably, piston has first piston 31 and second piston 32 of fixing connection, the
One air cavity 91 is between first piston 31 and the first end of cylinder body 10, and the second air cavity 92 is positioned at second
Between piston 32 and the second end of cylinder body 10.Be provided with between first piston 31 and the second piston 32 every
Plate 102, first piston 31 is formed towards the second end and wears dividing plate 102 and stretch into the second air cavity 92
Axle sleeve 33, the second piston 32 is set on axle sleeve 33 in a fixed manner, the endoporus of claw 20 afterbody
Offering annular slot, be formed with annular protrusion on the periphery of the end of axle sleeve 33, convex annular card lifting sets
To realize the connection of claw 20 and axle sleeve 33 in annular slot.
As further preferably, the second gas passage is formed as follows: one end of a mandrel 40 and cylinder
Body 10 is threaded, and the other end wears first piston 31 and axle sleeve 33 successively and stretches into the interior of claw 20
Kong Zhong, mandrel 40 diameter is less than the diameter of axle sleeve 33 endoporus so that being formed between axle sleeve 33 and mandrel 40
There is the annulus 70 that the endoporus with claw 20 connects, radially offer the to the entity of first piston 31
Two gas ports 311, annulus 70, first piston 31 and dividing plate are led in this second gas port 311 one end
Being formed with inducing QI chamber 80 between 102, the other end of the second gas port 311 leads to inducing QI chamber 80, and second enters
Pore 14 leads to inducing QI chamber 80, and then is connected with the second gas port 311 by inducing QI chamber 80.Thus may be used
Knowing, the second gas passage is formed by inducing QI chamber the 80, second gas port 311 and annulus 70, this
The quick connector of invention utilizes and forms the second gas in the gap physically offered between passage and entity
Passage, generation type is various, and makes gas flowing smooth and easy.
Can be seen by the effect of the first gas passage 15 and the generation type of the second gas passage and valve member
Going out, the quick connector designs of the present invention is ingenious, easy to use.
Above example is only the exemplary embodiment of the present invention, is not used in the restriction present invention, the present invention's
Protection domain is defined by the claims.Those skilled in the art can be at the essence of the present invention and protection model
In enclosing, the present invention making various amendment or equivalent, this amendment or equivalent also should be regarded as
Within the scope of the present invention.