CN2475905Y

CN2475905Y - Noiseless telescopic tube

Info

Publication number: CN2475905Y
Application number: CN 01229335
Authority: CN
Inventors: 张春; 李文东; 应波
Original assignee: 李文东
Priority date: 2001-06-28
Filing date: 2001-06-28
Publication date: 2002-02-06
Anticipated expiration: 2011-06-28

Abstract

A silent expansion pipe, which is cylinder-shaped with wavy cylinder wall. The expansion pipe is characterized in that the expansion pipe comprises a corrugated pipe wall (1) with an expansion pipe peak (2), an expansion pipe wave trough (4) and an expansion pipe ditch (3) thereon. The thickness of the corrugated pipe wall (1) is divided into two parts of thick and thin, the thick part and the thin part alternative cycle arrangement. The expansion pipe ditch (3) is arranged on the thicker part of the corrugated pipe wall (1). The utility model has the advantages of that the expansion pipe extends and bends very easily without noise under external force; the expansion pipe is oil-resistant and flame-retardant, can restore to the original condition with good elasticity after the external force disappear.

Description

A kind of noiseless telescopic pipe

A kind of noiseless telescopic pipe belongs to the engineering element of mechanical engineering field.More specifically, be meant a kind of ripply pipe, be specially adapted in the range hood, be particularly useful in the elevating cooker hood, in International Patent Classification (IPC), should be divided into the F16L group.

At present, known bellows is promoted at large in fields such as range hood and is used.Under the effect of external force, extending, collapsible, flexible.We can say, brought into play certain effect.But existing bellows will send the sound that is discord in the middle of elongation, contraction, BENDING PROCESS, produces tedious noise, and the people is not felt quite oneself.In addition, existing bellows oil resistant, fire-retardant aspect defectiveness.Moreover how not existing bellows power effect outside disappearance back resilients, have the shortcoming of elastic force difference.Though there is the pretty good bellows of some elastic force, this class bellows remains some shortcomings of having pointed out above-mentioned.

The purpose of this utility model be to provide a kind of can be extending, collapsible, flexible and in elongation, contraction, BENDING PROCESS, can not produce the oil resistant of noise, fire-retardant new-type bellows.

The purpose of this utility model is achieved through the following technical solutions: described telescopic pipe is a tubular, its barrel is a corrugated, main feature is that described telescopic pipe comprises ripple tube wall (1), is provided with telescopic pipe crest (2), telescopic pipe trough (4), flexible pipe trench (3) on ripple tube wall (1).Thick, thin two parts that the thickness of described ripple tube wall (1) is divided into, described thick, thin two part alternate cycle are arranged.Described flexible pipe trench (3) is located on the thicker part of ripple tube wall (1).Described flexible pipe trench (3) also can be located on the thicker part of intersection of thick, thin two parts of ripple tube wall (1).Described ripple tube wall (1) is a point of interface with crest (2), is the plane in the inboard near the ripple tube wall (1) of the upside of point of interface, is the plane in the outside near the ripple tube wall (1) of the downside of point of interface.Described flexible pipe trench (3) is located at the outer side surface than thickness portion of ripple tube wall (1).Described telescopic pipe trough (4) is located at the thin part of ripple tube wall (1), described telescopic pipe crest (2) be located at ripple tube wall (1) than thickness portion.The material of described ripple tube wall (1) is for being plastics, nonmetal, metal, alloy.

Below in conjunction with drawings and Examples the utility model is further specified, wherein:

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the sectional view of Fig. 1.

Fig. 3 is first embodiment's at Figure 1A place the sectional drawing of tube wall.

Fig. 4 is second embodiment's at Figure 1A place the sectional drawing of tube wall.

Can be clear that several major characters of described noiseless telescopic pipe from Fig. 1, wherein: 1 is that ripple tube wall, 2 is that telescopic pipe crest, 3 is that flexible pipe trench, 4 is the telescopic pipe trough.Fig. 2 is the sectional view of Fig. 1, has shown the structure of local ripple tube wall.Fig. 3 and Fig. 4 have shown the sectional drawing of two embodiments' tube wall respectively, from these two figure, can most clearly see the concrete structure of ripple tube wall, for example can see: described telescopic pipe comprises ripple tube wall (1), is provided with telescopic pipe crest (2), telescopic pipe trough (4), flexible pipe trench (3) on ripple tube wall (1); Thick, thin two parts that the thickness of described ripple tube wall (1) is divided into, described thick, thin two part alternate cycle are arranged; Described flexible pipe trench (3) is located on the thicker part of ripple tube wall (1); Described flexible pipe trench (3) also can be located on the thicker part of intersection of thick, thin two parts of ripple tube wall (1); Described ripple tube wall (1) is a point of interface with crest (2), in the inboard near the ripple tube wall (1) of the upside of point of interface is the plane, in the outside near the ripple tube wall (1) of the downside of point of interface is the plane, certainly this is to analyze according to the direction of Fig. 3 and Fig. 4, if turnback correspondingly will be done reverse analysis; Generally speaking, described flexible pipe trench (3) is located at the outer side surface than thickness portion of ripple tube wall (1), and this helps stretching; Can also see in addition, described telescopic pipe trough (4) is located at the thin part of ripple tube wall (1), described telescopic pipe crest (2) be located at ripple tube wall (1) than thickness portion, this is to understand easily, what telescopic pipe crest (2) was located at ripple tube wall (1) can improve the intensity of telescopic pipe than thickness portion, and telescopic pipe is not yielding when being subjected to external force.

Facts have proved and the utlity model has following advantage:

1. telescoping tube is very easy to flexible and crooked under external force.

2. there are not sound, noiselessness when stretching with bending.

3. telescopic pipe oil resistant, fire-retardant.

4. power effect outside can restore to the original state good springiness after disappearing.

Claims

1. noiseless telescopic pipe, described telescopic pipe is a tubular, its barrel is a corrugated, it is characterized in that described telescopic pipe comprises ripple tube wall (1), is provided with telescopic pipe crest (2), telescopic pipe trough (4), flexible pipe trench (3) on ripple tube wall (1).

2. noiseless telescopic pipe according to claim 1 is characterized in that the thickness of described ripple tube wall (1) is divided into thick, thin two parts, and described thick, thin two part alternate cycle are arranged.

3. noiseless telescopic pipe according to claim 1 is characterized in that described flexible pipe trench (3) is located on the thicker part of ripple tube wall (1).

4. noiseless telescopic pipe according to claim 1 is characterized in that described flexible pipe trench (3) is located on the thicker part of intersection of thick, thin two parts of ripple tube wall (1).

5. according to claim 1,2 described noiseless telescopic pipes, it is characterized in that described ripple tube wall (1) is a point of interface with crest (2), in the inboard near the ripple tube wall (1) of the upside of point of interface is the plane, is the plane in the outside near the ripple tube wall (1) of the downside of point of interface.

6. noiseless telescopic pipe according to claim 1 is characterized in that described flexible pipe trench (3) is located at the outer side surface than thickness portion of ripple tube wall (1).

7. noiseless telescopic pipe according to claim 1 is characterized in that described telescopic pipe trough (4) is located at the thin part of ripple tube wall (1), described telescopic pipe crest (2) be located at ripple tube wall (1) than thickness portion.

8. noiseless telescopic pipe according to claim 1, the material that it is characterized in that described ripple tube wall (1) are plastics, nonmetal, metal, alloy.