CN201428880Y

CN201428880Y - Core tube with sealing ring structure

Info

Publication number: CN201428880Y
Application number: CN200920156795XU
Authority: CN
Inventors: 王何洋; 彭骏
Original assignee: CODAN-LINGYUN AUTOMOTIVE RUBBER HOSE CO LTD
Current assignee: CODAN-LINGYUN AUTOMOTIVE RUBBER HOSE CO LTD
Priority date: 2009-07-01
Filing date: 2009-07-01
Publication date: 2010-03-24
Anticipated expiration: 2019-07-01

Abstract

The utility model provides a core tube with a sealing ring structure. The core tube comprises a hollow tube body; wherein a plurality of ring bars are protruded and distantly provided on the outer surface of the tube body, each two nearby ring bars are provided with a groove between them for arranging a sealing ring, and the outer diameter of the sealing ring is little larger than the outer diameter of the ring bars. The core tube can effectively prevent sealing property from reduction caused by non-uniform thickness of coated glue, to stabilize product quality and confirm sealing property. And the core tube has excellent environment protection effect.

Description

Core pipe with ring structure

Technical field

The utility model relates to a kind of air conditioning hose core pipe, particularly a kind of core pipe with ring structure.

Background technique

The raising that reaches people's environmental consciousness of popularizing along with car air conditioner, the car air conditioner pipe brings into use novel refrigerant R134a to replace R12, but the R134a refrigeration agent is bigger than R12 refrigeration agent for the breathability of rubber, so automotive air conditioning hose has been taked to add the infiltration that one deck nylon layer prevents refrigeration agent at the rubber pipe internal layer, both be present known four layers of air conditioning hose structure, the structure of these four layers of air conditioning hoses is followed successively by nylon layer-rubber layer-enhancement layer-rubber layer from inside to outside.

The assembly products that utilize this four layers of air conditioning hose two ends assembling tube manufacture to become at present specifically are respectively to add the core pipe in the innermost layer pipe of the end of these four layers of air conditioning hoses, and cover connects cover in the outermost surface tube outside of respective end, withholds then and is finished product.As shown in Figure 1, existing core pipe is metal bamboo joint structure.In order to improve the sealing of finished product, most enterprises adopt at core pipe thread splenium position gluing, and then assemble four layers of air conditioning hose and withhold connection, by the gluing between core pipe and flexible pipe internal layer nylon layer, make the more firmly tight of nylon layer and core tube-surface bonding, thereby improve the sealing of product.But there is following defective in this coating technique: 1) coating technique is wayward, and the gluing uneven thickness causes product hermeticity to descend unstable product quality; 2) environment and human body are had must harmfulness for coating technique, and the feature of environmental protection is poor.

Summary of the invention

The utility model embodiment's purpose is the defective at above-mentioned prior art, a kind of core pipe with ring structure is provided, can effectively avoid making constant product quality, accomplish environmental protection simultaneously because the product hermeticity that product gluing uneven thickness causes descends.

The technological scheme taked of the utility model embodiment is to achieve these goals: a kind of core pipe with ring structure, described core pipe comprises the body of inner hollow, the outer surface of the described body ring bar that is provided with outstanding described outer surface at interval, be provided with the groove of placing seal ring between the described adjacent ring bar, the external diameter of described seal ring is slightly larger than the external diameter of described ring bar.

For the stability that the product that better guarantees seals, described seal ring is more than two.

The utility model embodiment's beneficial effect is: compared to existing technology, because core pipe described in the utility model has adopted ring structure, product is withheld the nylon layer that connects back seal ring and described flexible pipe internal layer and is formed the radial interference compression seal, control conveniently, and make quality of product more stable; Replace gluing by seal ring is installed, remove coating process, improve operating environment, production process is environmental protection more.In addition, the utility model adopts the ring structure more than two, also has other seal ring to play seal action when the first road seal ring takes place to lose efficacy, thus the stability of the product that better guarantees sealing.

Description of drawings

Fig. 1 is the core pipe schematic representation of bamboo joint structure in the prior art;

Fig. 2 is the described core tubular construction schematic representation with ring structure of the utility model embodiment;

Fig. 3 is the structural representation of the assembly product that is made into by the utility model embodiment.

Among the figure: 10 core pipes, 1 body, 2 seal rings, 3 grooves, 4 ring bars, 20 covers, 30 4 layers of air conditioning hose.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.

As shown in Figure 2, the described a kind of core pipe of the utility model embodiment with ring structure, core pipe 10 comprises the body 1 of inner hollow, the outer surface of the body 1 ring bar 4 that is provided with outstanding outer surface at interval, be provided with the groove 3 of placing seal ring 2 between the adjacent ring bar 4, the external diameter of seal ring 2 is slightly larger than the external diameter of ring bar 4.For the stability that the product that better guarantees seals, described seal ring 2 is more than two.As preferably, the quantity of seal ring 2 is two in this example.

As shown in Figure 3, the withholding of assembly product that is made into by the utility model embodiment is in proper order: in core pipe 10 seal grooves of at first seal ring being packed into, then four layers of air conditioning hose 30 are inserted core pipe 10, the outside refills cover 20, use is withheld machine and is withheld, and makes 20, four layers of air conditioning hose 30 of cover and 10 firm the withholding together of core pipe.Because core pipe 10 has adopted ring structure, product is withheld the nylon layer that connects back seal ring and four layers of air conditioning hose 30 internal layer and is formed the radial interference compression seal, and control is got up convenient, makes quality of product more stable; Replace gluing by seal ring is installed, remove coating process, improve operating environment, more environmental protection of production process nonhazardous.In addition, the utility model adopts the ring structure more than two, also has other seal ring to play seal action when the first road seal ring takes place to lose efficacy, thus the stability of the product that better guarantees sealing.

In sum, the product hermeticity that product gluing uneven thickness causes so the utility model can effectively be avoided descends, and makes constant product quality and good sealing effect, has good environment protection effect simultaneously.

Above-described embodiment, the utility model embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solutions of the utility model scope and replacing all should be included in the protection domain of the present utility model.

Claims

1. core pipe with ring structure, described core pipe comprises the body of inner hollow, it is characterized in that: the outer surface of the described body ring bar that is provided with outstanding described outer surface at interval, be provided with the groove of placing seal ring between the described adjacent ring bar, described seal ring is the external diameter that the external diameter of two and described seal ring is slightly larger than described ring bar.

2. a kind of core pipe with ring structure according to claim 1, it is characterized in that: described seal ring is more than two.