CN2073524U

CN2073524U - Connecting device for use in the connection of fluid pipes

Info

Publication number: CN2073524U
Application number: CN 90218246
Authority: CN
Inventors: 顾长春
Original assignee: Individual
Current assignee: Gu Changchun
Priority date: 1990-08-18
Filing date: 1990-08-18
Publication date: 1991-03-20

Abstract

The utility model relates to a connecting head device used in the connection of fluid pipes, comprising a socket which chiefly comprises a pipe joint, a tubular socket body and a piston and a plug getting locking by inserting in the socket. Through a bulge extending inward from the inner circumference of a barrel body formed on one end of the socket body and an annular recess with finite axial width formed from the bulge extension, a locking mechanism of a connecting device is formed by the forming of structure which can be inserted in the bulge and the recess on the approximately middle position of the plug, the utility model has the advantages of safety, reliability for connection, convenience for mounting, dismounting, and use, simple structure, easy manufacture, etc.

Description

Connecting device for use in the connection of fluid pipes

The utility model relates to the connection set that fluid circuit is used, and relates in particular to the rapid pipe joint that general factory uses.

The connection set (being commonly called as speed connects) that is used for that fluid circuit connects or connects fast, purposes is wider, is most commonly used to the pneumatic tool occasion, be used for realizing between source of the gas and pneumatic tool fast be connected reliably.Described pneumatic tool are often referred to batch rifle, pneumatic pick and tamper etc., use bleed pressure to be up to 1.4mpa, its work characteristics is the frequency height, and vibration and impact are bigger, owing to belong to common tool, need frequently to remove stage makeup and costume from air machinery, thereby, to satisfying the remove stage makeup and costume rapid pipe joint of needs of this kind, not only require good airproof performance, especially require locking safe and reliable, easy accessibility.

Existing this type of connection set is complex structure often, remove stage makeup and costume or use inconvenience, the rapid pipe joint of the employing spring steel pin type locking mechanism that for example a kind of present use is more general, wherein to be not only structure complicated and other part is many for the problem of Cun Zaiing, and, work very dangerous and the use inconvenience.

Therefore the utility model is exactly the improvement that this type of connection set is done, and its objective is provides safe and reliable, easy to use, simple in structure, and part is few in addition, and it is also easy to make, and is particularly useful for the connection set that fluid circuit connects fast.

The utility model is used for the connection set of fluid circuit, comprise socket and plug, and be positioned at piston assembly between this socket and plug, this socket comprises pipe joint and barrel socket body, one end of pipe joint and socket one end form a fixed connection, on the other end end face of socket, form at least one from it in perimeter surface extend radially and have the projection of certain axial width and an annular groove that extends to form in inwardly vertically from this projection, form in the roughly intermediate portion of described plug can with at least one and the corresponding breach of shape and position of above-mentioned projection of having of projection on the above-mentioned socket and groove tabling, and the radially recessed structure that forms the sunk part that a slice at least links to each other with above-mentioned breach on the outer surface of this part of plug also, the other end of above-mentioned socket and plug and the respective end of pipeline or fluid machinery are connected.

Followingly the utility model structure is described with reference to drawings and Examples.

Fig. 1 has schematically illustrated traditional described connection set socket,

Fig. 2 has schematically illustrated the plug construction that uses with member coupling assembling shown in Figure 1,

Socket and plug that Fig. 3 schematically illustrates the utility model embodiment connection set are in the structure that is coupled when assembling user mode,

Fig. 4 is the sectional drawing along Fig. 3 A-A direction,

Fig. 5 be schematically illustrated on Fig. 3 shown in the structure of plug 2,

Fig. 6 is the sectional drawing along Fig. 5 M-N direction.

Now referring to Fig. 1 and Fig. 2, traditional socket 11 of the plug-in type Quick Connect Kit that fluid circuit connects that is used for shown in Figure 1 is by pipe joint 7, piston assembly 6, outer collar 10, totally two of draw point 9() and composition such as piston sleeve 8, pipe joint 7 is used for being connected with fluid circuit, when connecting with pipeline, rely on the effect of piston 6, fluid is not communicated with the right-hand member of this socket, in the time of in handle inserts by socket shown in Figure 1 by plug shown in Figure 2 12, move to left with plug left end push piston 6, fluid flows into socket the right by the radial hole (not shown) on the piston 6, and socket 11 relies on two draw points 9 that embed in the plug 12 left end annular grooves to realize that both locking is connected with plug 12.

Yet plug 12 often is used for being connected with pneumatic tool, because the vibration frequency height of instrument, impact force is big, moreover because two draw points 9 discontinuity and very easily produce phenomenon of rupture often.In case this phenomenon of rupture takes place will cause the accident.In addition, because this kind draw point formula locking mechanism in actual use, also easily takes place to stop up or bite phenomenon, making removes stage makeup and costume produces trouble, therefore brings inconvenience to use.

Referring to Fig. 3 and Fig. 4, the utility model embodiment's connection set comprises socket 1 and plug 2, socket 1 comprises at one end that fuse and be positioned at socket 14 at ordinary times with cylindrical socket body 14 pipe joints 5, make the socket 14 sealed at both ends piston assemblys that separate 3, this section construction is with identical substantially by the appropriate section structure of the socket of traditional connection set shown in Figure 1, right-hand member at socket 14 forms as this Fig. 3 and structure as shown in Figure 4, promptly form for example radially inwardly stretch out and the protruding 14-1 that have certain axial width by cylindrical shell 14 internal surfaces of two symmetrical distributions, in addition, also protruding thus 14-1 extends internally vertically and forms an annular groove 14-2 with certain axial width, now simultaneously referring to Fig. 5 and Fig. 6, Fig. 5 and Fig. 6 specifically represent can with the concrete structure of the plug 2 of socket 14 right-hand member structure tablings, roughly intermediate portion A at plug 2 forms described embedded structure, promptly the right-hand member of part A for example form two symmetrical distributions can with the breach 2-1 of protruding 14-1 sliding gomphosis, in addition, on part A, also form from breach 2-1 and extend, and form for example sunk part 2-2 of two symmetrical distributions towards radially being recessed into along the outer circumferential face of part A.Therefore when inserting in the socket 1, just constitute configuration state as shown in Figure 3 to plug 2.

Below brief description is made in insert action.

From the above mentioned, the socket 1 that is positioned at ordinary times on the pipeline is guaranteed fluid-tight by the interaction energy of Sealing 4, when fashionable to socket 1 interpolation plug 2, when the left end of plug 2 is run into piston, the promotion piston moves to left, make plug 2 turn clockwise about 70 ° this moment again, even plug 2 and socket 1 enter user mode as shown in Figure 3, at this moment, by Fig. 3 and Fig. 4 as can be seen, socket 1 and plug 2 all obtain the location respectively vertically and radially, when the demolition desiring to carry out between plug 2 and the socket 1, need at first promote about 2mm to plug 2 forward, need only then plug 2 is rotated counterclockwise about 70 °, plug 2 is withdrawed from, make socket 1 recover to quit work and keep sealing state.

In addition, as seen from Figure 3, when the utility model device is worked, the reason that on the above-mentioned axially locating surface of contact of socket 1 and plug 2, respectively socket 1 and plug 2 is had the active force effect vertically because of fluid, and can be designed so that socket and plug have enough mechanical strengths in this part, therefore can guarantee that axial locking is solid and reliable.

In sum, because the utility model connection set has mainly been done above-mentioned improvement on locking mechanism, thereby not only makes connection set safe and reliable, easy to use, and because of simple in structure, thereby easy to manufacture, cost is low, and is easy to maintenance.

In addition, the utility model structure mainly is applicable to occasions such as pneumatic tool, use as rapid pipe joint, but the obvious general connection occasion that also can be used for fluid circuit.

Claims

1, a kind of connection set that is used for fluid circuit, comprise socket and plug, and be positioned at piston assembly between this socket and plug, it is characterized in that this socket comprises pipe joint and barrel socket body, one end of described pipe joint and an end of this socket form a fixed connection, on the other end end face of described socket, form at least one perimeter surface in the socket and extend radially and have the projection of certain axial width, with an annular groove that extends internally vertically from this projection and form, form in the roughly intermediate portion of described plug can with the corresponding breach of shape and position with at least one and above-mentioned projection of projection on the above-mentioned socket and annular groove tabling, and also radially recessedly on the outer surface of this part of plug form the sunk part that a slice at least links to each other with above-mentioned breach, the other end of above-mentioned socket and plug and the respective end of pipeline or fluid machinery are connected.