JP2016001044A - Hose cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose cover into which even a hose including a joint in each end portion can be easily inserted and that can ensure high heat insulation effect.SOLUTION: A cylindrical hose cover 1 provided on an outer circumference of a hose 6 is configured so that a plurality of thick portions 2 and a plurality of thin portions 3 extending in a longitudinal direction are alternately provided in a circumferential direction. The thick portions 2 and the thin portions 3 are provided equidistantly in the circumferential direction. Furthermore, a diameter of a circle whose edges are top portions of the thick portions (inside diameter B of the thick portions 3) is set larger than an outside diameter A of a base of the hose 6, and a distance G between the adjacent thick portions 2 is set smaller than the outside diameter A of the hose 6.

Description

  The present invention relates to a hose cover for keeping a hose warm.

  As a conventional hose cover, what is described in the following patent documents 1 can be mentioned, for example. The hose cover described in this document is shown as a hose side solid layer. The hose-side solid layer includes a plurality of protruding ridges on the inner peripheral side thereof, and forms a wavy cross section having a constant thickness in the circumferential direction. The ridge contacts the outer surface of the hose with the hose mounted inside, and forms a gap between the adjacent ridges. This void exhibits a heat retaining effect on the hose.

JP 2008-82476 A (see FIG. 2)

  However, the conventional hose cover has a problem that it is difficult to insert the hose. In particular, when a hose having a joint at the end is inserted, the joint is generally bulkier than the hose, so that it is easily caught in the hose cover when inserted, and the insertion operation becomes more difficult.

  An object of the present invention is to provide a hose cover that is easy to insert even with a hose provided with a joint at an end and has a high heat retaining effect.

  1st characteristic structure in the hose cover of this invention is a cylindrical hose cover provided in the outer periphery of a hose, Comprising: The several thick part and thin part extended in a longitudinal direction are provided alternately by the circumferential direction. In the point.

[Action and effect]
According to this configuration, since the hose is supported by the plurality of thick portions, a gap is formed between the thin portion and the hose, thereby exhibiting a heat retaining effect.
In addition, according to this configuration, when the hose is inserted, the thick-walled portion serves as a guide, and the contact area between the hose and the hose cover is kept small, so that friction is unlikely to occur and the hose is easy to insert. Furthermore, since it is configured to be easily elastically deformed by providing a thin wall portion, even when a hose having a joint at the end is inserted, it can be elastically deformed according to the shape of the joint, thereby inserting the joint. easy.

  The second characteristic configuration is that the cross section of the thick portion is a trapezoid that becomes narrower toward the inside.

[Action and effect]
According to this configuration, even when a hose having a bulky joint is inserted, the joint is not easily caught by the hose cover and is easy to insert.

  The third characteristic configuration is that the width of the top part of the thick part / the height of the thick part is set to 0.6-2.

[Action and effect]
As in this configuration, the hose is pressed against the hose cover by the reaction force when the hose is bent by setting the width / height of the thick part to 0.6 or more. Also, the thick part can be prevented from falling down. In addition, by setting the value of the width of the top part of the thick part / the height of the thick part to 2 or less, the number of thick parts is reduced and the distance between the top parts of adjacent thick parts is increased. Even if it sets, it can prevent that a hose contacts in the thin part of a hose cover.

  In the fourth characteristic configuration, each of the thick portion and the thin portion is provided at equal intervals in the circumferential direction, and a diameter of a circle having an edge at the top portion of the plurality of thick portions is a trunk portion of the hose. The distance between the thick parts that are larger than the outer diameter and adjacent to each other is set smaller than the outer diameter of the body part of the hose.

[Action and effect]
According to this configuration, the hose is supported by a part of the plurality of thick portions by setting the diameter of the circle with the top portion of the thick portion as an edge larger than the outer diameter of the body portion of the hose. As a result, not all thick-walled parts come into contact with the hose, so the gap is wider than when all the thick-walled parts are in contact with and support the hose, and a higher thermal insulation effect is exhibited. Is done. Furthermore, since the distance between the adjacent thick parts is set to be smaller than the outer diameter of the body part of the hose, the hose cannot enter between the adjacent thick parts, so that the hose contacts the thin part. Without further action, and a higher heat retention effect is exhibited.

  5th characteristic structure exists in the point which set the distance between the said thick parts adjacent to 30%-50% of the trunk | drum outer diameter of the said hose.

[Action and effect]
According to this configuration, even if the hose is pressed against the hose cover by a reaction force when the hose is bent, contact between the hose and the hose cover at the thin wall portion can be prevented, and the heat retaining effect is not impaired.

It is sectional drawing of a hose cover and a hose. It is the front view (a) and side view (b) of a hose provided with a coupling. It is sectional drawing of a hose cover and a hose provided with a heat retention layer. It is a perspective view of a hose cover and a hose provided with a heat insulating layer. It is a table | surface which shows the dimension setting of the Example of this invention.

[Embodiment]
Embodiments of the present invention will be described below.
(Hose cover)
As shown in FIG. 1, the hose cover 1 is a cylindrical member, and a plurality of thick portions 2 and thin portions 3 extending in the longitudinal direction are alternately provided in the circumferential direction.

  Each of the thick part 2 and the thin part 3 is desirably provided at equal intervals in the circumferential direction, and further, the diameter of the circle (the thick part) with the top portions of the plurality of thick parts 2 as edges. The inner diameter B) of the hose 6 is larger than the outer diameter A of the trunk portion, and the distance G between the adjacent thick portions 2 and 2 is set smaller than the outer diameter B of the trunk portion of the hose 6. Is desirable.

  By setting the inner diameter B of the thick portion 2 to be larger than the outer diameter A of the trunk portion of the hose 6, the hose 6 is supported by a part of the plurality of thick portions 2, and the thick portion Since not all 2 are in contact with the hose 6, the gaps are wider than in the case where all the thick portions 2 are in contact with and support the hose 6, and a higher heat retaining effect is exhibited.

  Further, the distance G between the adjacent thick portions 2 and 2 is set smaller than the outer diameter B of the body portion of the hose 6 so that the hose 6 enters between the adjacent thick portions 2 and 2. Therefore, the hose 6 does not come into contact with the thin-walled portion 3, and an even higher heat retaining effect is exhibited.

  It is more desirable to set the distance G between the adjacent thick portions 2 and 2 to 30% to 50% of the hose body outer diameter A. According to this configuration, even if the hose 6 is pressed against the hose cover 1 by a reaction force when the hose 6 is bent, the contact between the hose 6 and the hose cover 1 at the thin wall portion 3 can be prevented, and the heat retaining effect is obtained. It will not be damaged. In addition, if it is 30% or less, the number of the thick portions 2 is increased, and the contact area between the hose 6 and the hose cover 1 is increased, which may impair the heat retaining effect.

  In addition, when the cross section of the trunk | drum of the hose 6 to apply is a regular polygon, the middle point of the circumferential direction in the thin part 3 between the adjacent thick parts 2 and 2, and the said adjacent thick part 2, It is desirable that the angle (θ) formed by the straight line connecting each of the two top portions is set smaller than the inner angle of the regular polygon of the hose 6. According to this configuration, even if the hose 6 has a regular polygonal cross section, the hose 6 cannot enter between the adjacent thick portions 2 and 2. Does not come into contact, and an even higher heat retention effect is exhibited.

  About the shape of the thick part 2, it is desirable that it is a trapezoid whose cross section becomes narrow toward the inside. By making the cross-sectional shape of the thick part 2 trapezoidal, even when a hose provided with a bulky joint is inserted, the joint is not easily caught by the hose cover and can be easily inserted.

  Furthermore, by making the cross-sectional shape of the thick part 2 trapezoidal, the contact area between the thick part 2 and the hose 6 is smaller than that when the cross section is rectangular while maintaining the strength of the thick part 2. can do. Therefore, when the hose 6 is inserted, the thick portion 2 is not deformed or damaged, and the hose 6 can be inserted more smoothly, and a higher heat retaining effect is also exhibited.

  It is desirable to set the ratio (D / C) between the width D of the top part of the thick part 2 and the height C of the thick part 2 to 0.6-2. By setting D / C to 0.6 or more, even if the hose 6 is pressed against the hose cover 1 by a reaction force when the hose 6 is bent, the thick portion 2 can be prevented from falling down. Further, by setting D / C to be 2 or less, even if the number of the thick portions 2 is reduced and the distance between the top portions of the adjacent thick portions 2 is set to be large, the hose 6 is connected to the hose cover 1. Contact with the thin portion 3 can be prevented.

  The constituent material of the hose cover 1 is not particularly limited, but a material having high elasticity and heat resistance is preferable. Examples of such a material include silicone rubber.

(Heat insulation layer)
A heat insulating layer 4 may be further provided on the outer periphery of the hose cover 1 as necessary in order to improve the heat insulating effect. The material constituting such a heat retaining layer 4 is not particularly limited, but a material having a high heat retaining effect is preferable, and examples of such a material include silicone rubber sponge. The outer periphery of the heat retaining layer 4 may be covered with a protective layer 5 such as a heat-shrinkable tube or a polyester fiber as necessary.

(hose)
The hose 6 is a member that forms a flow path of a fluid that needs to be kept warm. Examples thereof include a steam hose through which high-temperature steam flows. The hose 6 is not limited to one having a general circular cross section, and may be one having a regular polygonal cross section. Furthermore, as shown in FIG. 2, you may provide the joint 7 in an edge part. Although it does not specifically limit as a constituent material of the hose 6, For example, a fluororesin tube etc. can be mentioned. The outer periphery of the hose 6 may be covered with a protective layer 9 such as a stainless steel blade as necessary. The shape of the joint 7 is not particularly limited as long as it can be inserted into the hose cover 1. For example, the joint 7 may include a hexagonal portion 8.

(Production method)
The hose cover 1 and the heat insulating layer 4 can be manufactured by a known extrusion method. The heat insulating layer 4 can be provided, for example, by extruding a silicone rubber sponge on the outer periphery of the hose cover 1. When a heat shrinkable tube is provided as the protective layer 5, the outer periphery of the heat retaining layer 4 is covered with a heat shrinkable tube and is contracted and fixed by a dryer or the like.

  In FIG. 5, the dimension setting of Examples 1-8 of this invention is shown. However, the present invention is not limited to these examples. 5, the outer diameter A of the hose, the inner diameter B of the thick portion, the height C of the thick portion, the width D of the top portion of the thick portion, the inner diameter E of the thin portion, and the outer diameter F of the hose cover. Each of the distance G between adjacent thick parts, the two-surface width H of the joint hexagon part, and the maximum diameter I of the joint hexagon part correspond to A to I shown in FIGS. 1 and 2.

  In Examples 1-8, the cross section of the thick part 2 is trapezoidal, the ratio (D / C) between the width D and the height C of the thick part 2 is 0.6-2, and the adjacent thick parts The distance G between 2 and 2 was set in the range of 30 to 50% of the outer diameter A of the body portion of the hose 6.

  The present invention can be suitably used as a heat insulating member for piping.

DESCRIPTION OF SYMBOLS 1 Hose cover 2 Thick part 3 Thin part 4 Thermal insulation layer 5 Protective layer 6 Hose 7 Joint 8 Hexagon part 9 Protective layer A Outer diameter B of the hose Thick part inner diameter C Thick part height D Thick part Width E of the thin part E Outer diameter G of the hose cover G Distance between adjacent thick parts H Width across flats of the hexagonal part of the joint I Maximum diameter of the hexagonal part of the joint

Claims (5)

A cylindrical hose cover provided on the outer periphery of the hose,
A hose cover, wherein a plurality of thick portions and thin portions extending in the longitudinal direction are alternately provided in the circumferential direction.   The hose cover according to claim 1, wherein a cross section of the thick portion is a trapezoid that becomes narrower inward.   The hose cover according to claim 1 or 2, wherein the width of the top part of the thick part / the height of the thick part is set to 0.6-2.   Each of the thick part and the thin part is provided at equal intervals in the circumferential direction, and the diameter of the circle having the top part of the plurality of thick parts as an edge is larger than the outer diameter of the trunk part of the hose, The hose cover according to any one of claims 1 to 3, wherein a distance between adjacent thick portions is set to be smaller than an outer diameter of the body portion of the hose.   The hose cover according to claim 4, wherein a distance between the adjacent thick portions is set to 30% to 50% of an outer diameter of the body portion of the hose.

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