CN2621250Y

CN2621250Y - Self-locking connector

Info

Publication number: CN2621250Y
Application number: CN 03257929
Authority: CN
Inventors: 宋凱
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2004-06-23
Anticipated expiration: 2013-06-26

Abstract

The utility model discloses a self-locking joint, which comprises a joint and a self-locking nut. The self-locking nut is used to fix a pipe piece, which is inserted into the joint, and is connected with the joint by a screw thread. The self-locking joint of the utility model is made up of the non- metallic materials. With a cuneiform sealing locking way and the non-metallic material production process, the utility model overcomes the shortcomings of the prior connecting piece. The utility model has the advantages of an easy connection, a good sealing performance, a pressure resistance, a temperature resistance and the anti-corrosion and anti-scaling performances etc.

Description

The self-locking joint

Technical field

The utility model relates to a kind of pipe fitting joint.Particularly relate to a kind of being connected firmly, the self-locking joint of good airproof performance.

Background technique

Be used for the connection of pipe fitting at present, be mostly to adopt forging brass FERRULETYPE link, it is to tighten up and finish a kind of connector element of sealing with C type copper ring, and seepage can be caused owing to the difference of expansion coefficient in the back that is heated.But also exist the inner easily fouling of bad, the long-term use of sealability, perishable, shortcoming such as the life-span is short.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of Placement with innovation, easily the self-locking joint of connection and good airproof performance.

The technological scheme that the utility model adopted is: a kind of self-locking joint, include joint and self-locking nut, its self-locking nut is used for fixing the pipe fitting that inserts in the joint, and with joint for being threaded.

The utility model forms the locking mode of wedge-type seal and selects for use nonmetallic material to make with it, has overcome the shortcoming of existing link, makes it have easy connection, good seal performance, withstand voltage, heatproof, advantage such as burn into non-scaling not.

Description of drawings

Fig. 1 is a package assembly schematic representation of the present utility model;

Fig. 2 is the local enlarged diagram that Fig. 1 middle joint combines with self-locking nut;

Fig. 3 a, Fig. 3 b are the front schematic view and the sectional schematic diagrams of self-locking nut in the utility model;

Fig. 4 is the structural representation of elbow in the utility model;

Fig. 5 is the structural representation of straight connector in the utility model;

Fig. 6, Fig. 7 are that an end is the straight connector structural representation of self-locking joint in the utility model;

Fig. 8 is the structural representation of threeway in the utility model;

Fig. 9, Figure 10, Figure 11 are package assembly schematic representation of the present utility model.

Wherein:

1: joint 2: self-locking nut

3,4: groove 5: convex edge

6: pipe fitting 7: internal thread

8: outside thread 9: card

Embodiment

Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.

As shown in Figure 1, the self-locking joint includes joint 1 and self-locking nut 2, and its self-locking nut 2 is used for fixing the pipe fitting that inserts in the joint 1, and with joint 1 for being threaded.

Shown in Fig. 3 a, Fig. 3 b, self-locking nut 2 is orthohexagonal loop configuration that limit portion has groove 3, and the inboard of its limit portion groove 3 outer limits one sidewall is provided with and is used for the internal thread 7 that is connected with joint 1, is ramp shaped by a sidewall of annular distance.

As shown in Figure 4, joint 1 is an elbow, the joint at its two ends all is ring barrel shaped structure that limit portion has the groove 4 that can insert pipe fitting 6, the periphery of its ring barrel shaped structure is provided with a circle convex edge 5, the part that the ring barrel shaped structure is positioned at 5 upper ends, convex edge is provided with the outside thread 8 that links to each other with internal thread 7 on the self-locking nut 2, and the groove 4 of ring barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread 8.

As shown in Figure 5, joint 1 is straight connector, the joint at its two ends all is ring barrel shaped structure that limit portion has the groove 4 that can insert pipe fitting 6, the periphery of its ring barrel shaped structure is provided with a circle convex edge 5, the part that the ring barrel shaped structure is positioned at 5 upper ends, convex edge is provided with the outside thread 8 that links to each other with internal thread 7 on the self-locking nut 2, and the groove 4 of ring barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread 8.

As Fig. 6, shown in Figure 7, joint 1 is straight connector, the joint of one end is that the outside has been threaded the straight barrel type joint, the other end is the ring barrel shaped structure that limit portion has the groove 4 that can insert pipe fitting 6, the periphery of its ring barrel shaped structure is provided with a circle convex edge 5, the part that the ring barrel shaped structure is positioned at 5 upper ends, convex edge is provided with the outside thread 8 that links to each other with internal thread 7 on the self-locking nut 2, and the groove 4 of ring barrel shaped structure is lower than a side that has individual screw thread 8 by a side of annular distance.

As shown in Figure 8, joint 1 is a tee union, the joint of its three end all is ring barrel shaped structure that limit portion has the groove 4 that can insert pipe fitting 6, the periphery of its ring barrel shaped structure is provided with a circle convex edge 5, the part that the ring barrel shaped structure is positioned at 5 upper ends, convex edge is provided with the outside thread 8 that links to each other with internal thread 7 on the self-locking nut 2, and the groove 4 of ring barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread 8.

Joint 1 and self-locking nut 2 adopt nonmetallic material to make.Joint 1 and self-locking nut 2 can adopt ABS or PPR or PPC material.

As Fig. 2, Fig. 9, Figure 10, shown in Figure 11, during assembling, at first with pipe fitting 6 sleeves in the groove 4 of joint 1, again self-locking nut 2 is enclosed within the outside of joint 1, and link with joint 1 spiral shell and to connect, wherein, the card 9 of the ramp shaped on the self-locking nut 2 inserts in the gap of formation between pipe fittings 6 and the joint 1, and the formation wedge-type seal, thereby guaranteed sealing effect between pipe fitting 6 and the joint 1.

Claims

1. a self-locking joint is characterized in that including joint (1) and self-locking nut (2), and its self-locking nut (2) is used for fixing the pipe fitting that inserts in the joint (1), and with joint (1) for being threaded.

2. self-locking joint according to claim 1, it is characterized in that, described self-locking nut (2) is the loop configuration that limit portion has groove (3), the inboard of its outer limit of limit portion groove (3) one sidewall is provided with and is used for the internal thread (7) that is connected with joint (1), is ramp shaped by a sidewall of annular distance.

3. require 1 described self-locking joint according to power, it is characterized in that described joint (1) is an elbow, the joint at its two ends all is ring barrel shaped structure that limit portion has the groove (4) that can insert pipe fitting (6), the periphery of its ring barrel shaped structure is provided with a circle convex edge (5), the part that the ring barrel shaped structure is positioned at convex edge (5) upper end is provided with the outside thread (8) that links to each other with internal thread (7) on the self-locking nut (2), and the groove (4) that encircles barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread (8).

4. require 1 described self-locking joint according to power, it is characterized in that described joint (1) is straight connector, the joint at its two ends all is ring barrel shaped structure that limit portion has the groove (4) that can insert pipe fitting (6), the periphery of its ring barrel shaped structure is provided with a circle convex edge (5), the part that the ring barrel shaped structure is positioned at convex edge (5) upper end is provided with the outside thread (8) that links to each other with internal thread (7) on the self-locking nut (2), and the groove (4) that encircles barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread (8).

5. require 1 described self-locking joint according to power, it is characterized in that described joint (1) is straight connector, the joint of one end is that the outside has been threaded the straight barrel type joint, the other end is the ring barrel shaped structure that limit portion has the groove (4) that can insert pipe fitting (6), the periphery of its ring barrel shaped structure is provided with a circle convex edge (5), the part that the ring barrel shaped structure is positioned at convex edge (5) upper end is provided with the outside thread (8) that links to each other with internal thread (7) on the self-locking nut (2), and the groove (4) that encircles barrel shaped structure leans on a side of annular distance to be lower than a side that has outside thread (8).

6. require 1 described self-locking joint according to power, it is characterized in that described joint (1) is a tee union, the joint of its three end all is ring barrel shaped structure that limit portion has the groove (4) that can insert pipe fitting (6), the periphery of its ring barrel shaped structure is provided with a circle convex edge (5), the part that the ring barrel shaped structure is positioned at convex edge (5) upper end is provided with the outside thread (8) that links to each other with internal thread (7) on the self-locking nut (2), and the groove (4) that encircles barrel shaped structure leans on a side of annular distance to be lower than a side that is threaded (8).

7. require 1 described self-locking joint according to power, it is characterized in that described joint (1) and self-locking nut (2) adopt nonmetallic material to make.

8. require 1 described self-locking joint according to power, it is characterized in that described joint (1) and self-locking nut (2) adopt a kind of material among ABS, PPR, the PPC.