CN201021748Y

CN201021748Y - A clip pressure pipe connector

Info

Publication number: CN201021748Y
Application number: CNU2007201065456U
Authority: CN
Inventors: 何星灯; 何星祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-13
Filing date: 2007-02-13
Publication date: 2008-02-13
Anticipated expiration: 2017-02-13

Abstract

The utility model discloses a clamping pressing type pipe tie-in, which includes a pipe piece body, an obturating ring, and a steel sleeve. Sawtoothes are distributed on the two ends of the outer surface of the connection part of the pipe piece body, and a clamping heave ring is arranged on the outer surface of the back end of the connection part of the pipe piece body. The clamping heave ring matches with the internal diameter of the steel sleeve, the surface of the pipe piece body is provided with an annular slot for holding the obturating ring and an annular slot for clamping pressing connection. The utility model is characterized in that a round positioning retainer ring is also included, and the inner diameter of the round ring is bigger than the outer diameter of the pipe piece on the back end of the connection part of the pipe piece body and is smaller than the inner diameter of the steel sleeve. A plurality of arc openings is arranged on the round ring, the end edge of the steel sleeve assumes a hook shape and is provided with a plurality of gaps, the hook handles of the end edge of the steel sleeve match with the arc openings. The installation of the utility model is more labor-saving, the fastness is more firm, the cost is low, and the processing is more convenient.

Description

A kind of calipers type pipe joint

Technical field

The utility model relates to a kind of pipe joint, relates in particular to a kind of calipers type pipe joint.

Background technique

The steel bushing of general calipers type pipe joint and body connection part generally all do not have crooked to the inside, but straight being connected on the body, fixation is played with an injection molding gum cover in the outside, such fixed effect is not obvious and be easy to cause steel bushing to come off when pipe fitting is installed, common fixedly gum cover adopts annular plastics circle simple in structure to make, though simple in structurely be easy to cause gum cover to be connected with steel bushing that shaped design does not match and fixed effect is not good; Outer surface of pipe fittings has many close-connected sawtooth in addition, and the pipe joint of this structure is processed complex, cost height not only, and inconvenience during mounting pipe; Moreover the pipe joint that presses for sealed card, generally also need offer many grooves at outer surface of pipe fittings, to lay seal ring, improved processed complex degree and cost again.

The model utility content

The utility model is to overcome above-mentioned deficiency, purpose is to provide a kind of calipers type pipe joint, the calipers type pipe joint of this structure is by being provided with a circular positioning retainer ring, the circular-arc opening that forms by the hollow out positioning retainer ring mates with the hook palmistry on the end limit of steel bushing, thereby the hook hand on the end limit of steel bushing can pass circular-arc opening, with chucking raised ring chucking, positioning retainer ring can make steel bushing end dilatating and deformable within the specific limits, be convenient to the easier outer rim that enters the chucking projection of steel bushing, form drive fit, steel bushing and pipe fitting body are easy for installation, seal more reliable, and positioning retainer ring can also prevent that steel bushing from keeping lock state along the peripheral direction rotation, can prevent that its external force by anything unexpected from causing rotates in a circumferential direction, and installs more laborsaving, fixing more firm, solved the deficiencies in the prior art part.

The utility model is to achieve the above object by the following technical programs: a kind of calipers type pipe joint, comprise the pipe fitting body, seal ring, steel bushing, outer surface two ends, pipe fitting body attachment portion are distributed with sawtooth, on the outer surface of rear end, pipe fitting body attachment portion, be provided with the chucking raised ring, described chucking raised ring and steel bushing internal diameter coupling, the pipe fitting body surface has the annular groove of laying seal ring and presses the annular groove that is connected usefulness with card, be characterized in also including a location back-up ring, described positioning retainer ring is an annulus, the internal diameter of annulus is greater than the external diameter of rear end, pipe fitting body attachment portion pipe fitting, internal diameter less than steel bushing, on described annulus, be provided with several circular-arc openings, the end limit of described steel bushing is hook-shaped and have several breach in being, and the hook hand on the end limit of steel bushing mates with several circular-arc openings.

As preferably, described several circular-arc openings are four, and several breach on the end limit of the steel bushing that matches and hook hand also are four.

As preferably, the seal groove of laying seal ring on the outer surface of pipe fitting body attachment portion is one.

As preferably, between the sawtooth on the outer surface of pipe fitting body attachment portion equidistant interval is arranged.

As preferably, the cross section of laying the annular groove of seal ring is a rectangle.

As preferably, described positioning retainer ring is the plastics positioning retainer ring.

The beneficial effects of the utility model:

1) the utility model is by being provided with a location plastics back-up ring, can prevent that steel bushing from keeping lock state along the peripheral direction rotation, can prevent that its external force by anything unexpected from causing rotates in a circumferential direction, this positioning retainer ring adopts lightweight, environmentally-friendly plastic to make, this is not to take general simple solid body structure, but take hollow multi-annular labyrinth, can prevent that like this back-up ring that the expansion owing to using process pipe and steel bushing causes from expanding, also can reduce its deformation quantity, in light, also have beautiful outward appearance and make that its product also is difficult for copying.

2) the utility model only is provided with one at the body connection part and lays the annular groove of seal ring and a card and press to be connected and use annular groove, like this can be in the assurance sealing effect consumption of saving seal ring.

3) the utility model at the two ends of body connection part uniform respectively sawtooth, one closely-spaced ring is arranged between sawtooth and sawtooth, the sawtooth total length accounts for the stem total length and makes an appointment with half, such flexuose distributed architecture, easier and more firm in the time of can making tubulature, prevent leakage phenomenon thereby also can in use reduce becoming flexible of tubing to greatest extent.

4) the utility model is provided with the flanged ring of chucking stainless steel sleeve in body connection part the other end, and the manufacturing flange helps with fastening steel bushing when assembling steel bushing and prevents to come off.

5) the utility model is having four breach on the steel bushing with on the protruding connecting end of the chucking limit, when this not only makes external aluminium-plastic composite pipe install, can observe to insert whether by this breach and put in place, install, seal all more reliable, and can also make steel bushing end dilatating and deformable within the specific limits, be convenient to the easier outer rim that enters the chucking projection of steel bushing, form drive fit and be assemblied on the pipe fitting, avoid coming off.

6) the utility model is applied widely, can be used for pipe fittings such as above two logical, the threeway of an any end or an end, elbow, and install more laborsaving, fixing more firm, cost is low, easy to process.

Description of drawings

Fig. 1 is the sectional structure schematic representation that the utility model pipe fitting body attachment portion, seal ring, steel bushing, positioning retainer ring and aluminium-plastic composite pipe are linked and packed;

Fig. 2 is that the utility model pipe fitting body connects decomposition sectional structure schematic representation;

Fig. 3 be among Fig. 2 pipe fitting body attachment portion A-A to structural representation;

Fig. 4 be among Fig. 2 steel bushing part B-B to structural representation;

Fig. 5 is positioning retainer ring portion C-C sectional view among Fig. 2.

Embodiment

The utility model is further elaborated by embodiment below in conjunction with accompanying drawing:

Embodiment 1: as shown in the figure, a kind of calipers type pipe joint, by pipe fitting body 1, seal ring 11, steel bushing 2, plastics positioning retainer ring 3 constitutes, pipe fitting body 1 is made for metallic copper, the outer surface two ends distribution screw thread 6 of pipe fitting body 1 attachment portion, equidistant interval 5 is arranged between screw thread and the screw thread, on the outer surface of rear end, pipe fitting body 1 attachment portion, be provided with chucking raised ring 9, described chucking raised ring 9 and steel bushing 2 internal diameters coupling, pipe fitting body 1 surface has an annular groove 8 of laying seal ring 11 and presses the annular groove 7 that is connected usefulness with card, the cross section of annular groove 8 is a rectangle, described positioning retainer ring 3 is an annulus, the internal diameter of annulus is greater than the external diameter of rear end, pipe fitting body 1 attachment portion pipe fitting, internal diameter less than steel bushing 2, on described annulus, be provided with 4 circular-arc openings 13, hook-shaped and symmetrical 4 breach 10, the hook hand 12 on the end limit of steel bushing 2 and 4 circular-arc opening 13 couplings of having in the end limit of described steel bushing 2 is.

Described plastics positioning retainer ring adopts lightweight, environmentally-friendly plastic to make, this is not to take general simple solid body structure, but take hollow multi-annular labyrinth, can prevent that like this back-up ring that the expansion owing to using process pipe and steel bushing causes from expanding, also can reduce its deformation quantity, in light, also have beautiful outward appearance and make that its product also is difficult for copying.

When aluminium-plastic composite pipe 4 inserts the appearance of pipe fitting body 1 attachment portion and the space between the steel bushing 2, and by this breach 10 observe its inserted put in place after, be the tight steel bushings of available special tool pincers pincers, the rib of projection is out of shape on the aluminium-plastic composite pipe 4 that is fixed under it steel bushing 2 on the jaw corresponding position, driving it simultaneously is out of shape together, aluminium-plastic composite pipe 4 crushed elements snap in card and press in the annular groove 7 that connects usefulness, thereby form a fastening integral body, to locate plastics back-up ring 3 after steel bushing 2 installs and be contained in its outside, Stationary Steel Bushing 2 increases sealing effect simultaneously.

Given example can not be interpreted as the restriction to the utility model protection domain, thereby the nonessential improvement done according to above-mentioned actual content and design philosophy of professional and technical personnel and adjust and also belong to protection domain of the present utility model.

Claims

1. calipers type pipe joint, comprise pipe fitting body (1), seal ring (11), steel bushing (2), the outer surface two ends distribution screw thread (6) of pipe fitting body (1) attachment portion, on the outer surface of pipe fitting body (1) rear end, attachment portion, be provided with chucking raised ring (9), described chucking raised ring (9) and steel bushing (2) internal diameter coupling, pipe fitting body (1) surface has the annular groove (8) of laying seal ring (11) and presses the annular groove (7) that is connected usefulness with card, it is characterized in that also including a location back-up ring (3), described positioning retainer ring (3) is an annulus, the internal diameter of annulus is greater than the external diameter of pipe fitting body (1) rear end, attachment portion pipe fitting, internal diameter less than steel bushing (2), on described annulus, be provided with several circular-arc openings (13), the end limit of described steel bushing (2) is hook-shaped and have several breach (10) in being, and the hook hand on the end limit of steel bushing (2) mates with several circular-arc openings (13).

2. calipers type pipe joint according to claim 1 is characterized in that described several circular-arc openings (13) are four, and several breach (10) and the hook hand on the end limit of the steel bushing that matches (2) also are four.

3. calipers type pipe joint according to claim 2, the seal groove (8) that it is characterized in that laying on the outer surface of pipe fitting body (1) attachment portion seal ring (11) is one.

4. calipers type pipe joint according to claim 3 is characterized in that between the screw thread (6) on the outer surface of pipe fitting body (1) attachment portion equidistant interval (5) being arranged.

5. according to claim 1 or 2 or 3 or 4 described calipers type pipe joints, the cross section that it is characterized in that laying the annular groove (8) of seal ring (11) is a rectangle.

6. according to claim 1 or 2 or 3 or 4 described calipers type pipe joints, it is characterized in that described positioning retainer ring (3) is a plastics positioning retainer ring (3).

7. calipers type pipe joint according to claim 5 is characterized in that described positioning retainer ring (3) is a plastics positioning retainer ring (3).