CN201428881Y

CN201428881Y - Assembly bamboo knot structure core tube with four layers of air conditioning hose

Info

Publication number: CN201428881Y
Application number: CN2009201567983U
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 discloses an assembly bamboo knot structure core tube with four layers of air conditioning hose, comprising a core tube, a buckle sleeve provided on the core tube, and a host betweenthe buckle sleeve and the core tube; wherein the core tube is composed of at least two bamboo knot units, the bamboo knot unit comprises a circular cone, a truncated cone is arranged above the circular cone, the diameter of the truncated cone is equal to the diameter of the small end of the circular cone and is equal to the inner diameter of the hose, and the core tube is riveted with the bucklesleeve. The structure can confirm the permeability resistance of the core tube, satisfy production assembly ability, and improve production efficiency.

Description

Four layers of air conditioning hose assembly bamboo joint structure core pipe

Technical field

The utility model relates to a kind of core pipe, particularly a kind of four layers of air conditioning hose assembly bamboo joint structure core pipe.

Background technique

Raising along with universal people's environmental consciousness of car air conditioner, the car air conditioner pipe brings into use novel refrigerant R134a to replace R12, but R134a is bigger than R12 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, be four layers of air conditioning hose structure in the prior art, four layers of air conditioning hose structure are followed successively by nylon layer, rubber layer, enhancement layer and rubber layer from inside to outside.Riveted connected after the round column structure gluing of being with rectangle groove was adopted in the production of four layers of air conditioning hose assembly more, and hour assembly product permeability resistance is poor when core pipe size, and product assembled difficulty when core pipe size was big.

Referring to Fig. 1, when the D1 size is identical with inner diameter, when the D2 size was slightly larger than D1, total member pulling-out force was low, and the assembly permeability resistance is poor; When the D1 size is identical with inner diameter, the D2 size is during greater than D1, the big assembling difficulty of core pipe insertion force, and manufacturing efficiency is low; When the D1 size less than inner diameter, when the D2 size was slightly larger than inner diameter, total member pulling-out force was low, the assembly permeability resistance is poor; When the D1 size less than inner diameter, the D2 size is during greater than inner diameter, the big assembling difficulty of core pipe insertion force, manufacturing efficiency is low; When the D1 size greater than inner diameter, the D2 size is during greater than D1, the big assembling difficulty of core pipe insertion force, manufacturing efficiency is low.

Summary of the invention

The utility model provides a kind of under the prerequisite of the permeability resistance that guarantees product in order to solve the deficiencies in the prior art, can satisfy the production assembling of product, four layers of air conditioning hose assembly bamboo joint structure core pipe of enhancing productivity.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of four layers of air conditioning hose assembly bamboo joint structure core pipe, comprise the core pipe, be provided with above the described core pipe and withhold cover, described withholding between cover and the core pipe is provided with flexible pipe, described core pipe is made up of plural ring unit, and described ring unit comprises a circular cone, is provided with round platform above the described circular cone, the diameter of described round platform is identical with described circular cone end diameter, and the diameter of described round platform is identical with described inner diameter.

Described core pipe with withhold cover and be connected by riveted.

Beneficial effect:

1. the circular cone Outside diameter makes core pipe and flexible pipe form interference fit greater than the internal diameter of flexible pipe, has guaranteed the permeability resistance of product;

2. adopt core tubular construction of the present utility model, reduced the area of contact of core pipe and hose inner wall, reduced the insertion force of product assembling, guaranteed the easy assembling of product;

3. the diameter of round platform and flexible pipe nominal bore diameter size are basic identical and form drop with the circular cone Outside diameter, and the riveted position guarantees the taking off property of tension of product at the outer surface of round platform.

The utility model can satisfy the production assembling of product under the prerequisite of the permeability resistance that guarantees product, enhance productivity.

Description of drawings

Fig. 1 is the structural representation of prior art middle core pipe;

Fig. 2 is the structural representation of the utility model core pipe;

Fig. 3 is the utility model riveted construction schematic representation.

Among the figure: 1. core pipe, 1.1 circular cone, 1.2 round platforms are 2. withheld cover, 3. flexible pipe.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Referring to Fig. 2 and Fig. 3, a kind of four layers of air conditioning hose assembly bamboo joint structure core pipe, comprise core pipe 1, core pipe 1 is made up of plural ring unit, and the ring unit adopts Xuan to press machine shaping, and the ring unit comprises a circular cone 1.1, be provided with round platform 1.2 above the circular cone 1.1, the diameter D3 of round platform 1.2 is identical with circular cone 1.2 end diameters, and the diameter D3 of round platform 1.2 is identical with flexible pipe 3 internal diameters, and circular cone 1.2 Outside diameter D4 are slightly larger than the diameter D3 of round platform 1.2.Be set with flexible pipe 3 on the core pipe 1, flexible pipe 3 outsides are equipped with and are withheld cover 2, withhold cover 2, flexible pipe 3 and core pipe 1 by the riveting machine riveted, and the riveted position is corresponding cover 2 surfaces of withholding of diameter D3, make core pipe 1, withhold cover 2 and flexible pipe 3 riveteds link together.

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, a kind of four layers of air conditioning hose assembly bamboo joint structure core pipe, comprise the core pipe, be provided with above the described core pipe and withhold cover, described withholding between cover and the core pipe is provided with flexible pipe, it is characterized in that described core pipe is made up of plural ring unit, described ring unit comprises a circular cone, be provided with round platform above the described circular cone, the diameter of described round platform is identical with described circular cone end diameter, and the diameter of described round platform is identical with described inner diameter.

2, four layers of air conditioning hose assembly bamboo joint structure core pipe according to claim 1 is characterized in that, described core pipe with withhold cover and be connected by riveted.