JP2003120866A - Hose with protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hose with a protector easily mountable on a nipple and the like. SOLUTION: This hose with the protector is composed of a cylindrical hose body 10, the cylindrical protector 20 coaxially mounted in a state of covering an outer peripheral face of the hose body 10, and a cylindrical engagement part 30 for integrally joining the hose body 10 and the protector 20 at their both end parts to form a nipple insertion port in which the nipple is inserted and joined. The hose body is made of a resin and the protector is made of rubber, whereby the heat resistance and the flame resistance necessary in case of vehicle fire and optimum as a filler hose, can be obtained, and the hose is also provided with high sealability and connecting characteristic with a mating pipe.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to heat from the outer peripheral side,
The present invention relates to a hose with a protector that is highly resistant to damage such as flames.

[0002]

2. Description of the Related Art Conventionally, as a hose with a protector, there is known a hose including a cylindrical protector coaxially covering an outer peripheral side of a hose body through which a liquid is passed. This conventional hose with a protector is variously devised so as to form a space between the hose body and a tubular protector covering the hose body as seen in Patent Documents 1 to 4. Further, regarding the fastening of the hose with a protector, Patent Document 5 discloses that a connecting fitting is used.

[0003]

[Patent Document 1] Japanese Utility Model Laid-Open No. 62-174192

[0004]

[Patent Document 2] Japanese Utility Model Laid-Open No. 56-18488

[0005]

[Patent Document 3] Japanese Utility Model Laid-Open No. 61-188087

[0006]

[Patent Document 4] Japanese Utility Model Publication No. 2-46194

[0007]

[Patent Document 5] Japanese Utility Model Publication 3-34548

[0008]

A conventional hose with a protector has a structure in which a part or the whole of the hose body is covered with the protector. Therefore, when connecting the conventional hose with a protector to another device, a specially designed metal fitting was required. Further, when connecting to a nipple or the like, it was necessary to insert the nipple directly into the hose body of the hose with a protector. Therefore, the hose body needs to be made of flexible rubber or elastomer, and the hose body cannot be made of highly rigid resin or the like.

The present invention is intended to solve the above problems, and an object thereof is to provide a hose with a protector which can be easily mounted on a nipple or the like.

[0010]

DISCLOSURE OF THE INVENTION A hose with a protector according to the present invention comprises a cylindrical hose body, a cylindrical protector arranged coaxially with the outer peripheral surface of the hose body, and the hose. It is characterized in that the main body and the protector are integrally joined at both ends thereof, and a tubular engaging portion forming a nipple insertion opening into which the nipple is inserted and coupled.

In the hose with a protector of the present invention, since the engaging portion is integrally formed, it can be easily joined to another device such as a nipple. Further, since the engaging portion integrally fixes the hose body and the protector, the hose body and the protector are highly integrated.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a hose with a protector according to the present invention will be described below.

A hose with a protector of the present invention comprises a tubular hose body, a tubular protector coaxially arranged in a state of covering the outer peripheral surface of the hose body, the hose body and the protector. And a cylindrical engaging portion that integrally joins at both ends and forms a nipple insertion opening into which the nipple is inserted and coupled. In the hose with a protector of the present invention, since the engaging portion is integrally formed, it is easy to join to another device such as a nipple. Further, since the engaging portion integrally fixes the hose body and the protector, the hose body and the protector are highly integrated.

As the hose body constituting the hose with a protector of the present invention, the hose body of the conventional hose with a protector can be used as it is. That is, as the hose body, a conventional rubber hose, an elastomer hose, a resin hose, a multi-layer hose having an inner peripheral portion made of resin and an outer peripheral portion made of rubber can be used. By using a resin hose as the hose body, a hose with a protector having excellent gasoline permeation resistance can be obtained.

A portion where the hose body and the engaging portion come into contact with each other, that is, an end portion of the hose body may have a shape having a concave or convex ring when viewed from the inner peripheral surface side that makes one round in the circumferential direction. . This ring serves as a fitting locking portion for enhancing the integrity of the hose body and the engaging portion, or a convex or concave locking ring provided on the outer peripheral surface of the tip end portion of the nipple inserted and held in the engaging portion. It becomes a fitting and locking part that is directly or indirectly fitted and locked. In addition, it is preferable that a portion of the tip of the hose body that is in contact with the engaging portion and that is located on the outer peripheral side of the nipple that is inserted and held is formed in a wavy shape that is uneven in the circumferential direction. By forming the wavy shape having irregularities in the circumferential direction, the end portion of the hose body can be expanded in diameter, and the nipple can be easily inserted.

As the protector, the above-mentioned conventional protector can be used as it is. When the protector is required to have properties such as heat resistance and flame resistance, it is preferable to form the protector with rubber. By forming with rubber, it is possible to avoid disappearance due to melting that occurs when forming with a thermoplastic resin, and it is possible to prevent heat and flame from affecting the hose body for a long time.

The protector is composed of a pair of parts, and one end of one part is coaxially fitted to one end of the other part.
You may make it relatively movable in an axial direction.

The engaging portion may be formed integrally with the protector, or may be formed integrally by inserting the end portion of the protector formed in advance and integrally forming the protector.
After that, it may be combined with a protector.

It is preferable that the engaging portion is formed of a rubber elastic body, the diameter of which is expanded by the inserted nipple to elastically sandwich the nipple. Therefore, the shaft hole of the engaging portion needs to have a shape matching the outer diameter and the outer shape of the nipple to be inserted. A conventional shaft hole shape can be adopted as the shape of the shaft hole.

The end of the hose body comes into contact with the engaging portion.
By making the hose body made of resin with the engaging part made of rubber,
The portion of the engaging portion that is coaxially interposed between the inserted and held nipple and the hose body can be used as the seal portion.

The engaging portion may be insert-molded so as to bury the end portion of the hose body, or may be opened in a ring shape on the inner peripheral surface into which the end portion of the hose body is inserted and parallel to the axial direction. Alternatively, the hose main body can be formed into a ring-shaped bottomed ring groove that is inclined with respect to the axial direction and deepened, and the end of the hose body can be inserted and locked in the bottomed ring groove.

The portion of the engaging portion on the inner peripheral surface side is integrally formed with the portion of the outer peripheral surface side in a cylindrical shape, and the portion on the inner peripheral surface side is inside the portion on the outer peripheral surface side. It can also be formed by coaxially folding. In such a case, the nipple is inserted and held in the shaft hole formed on the folded inner peripheral surface side.
In order to prevent the folded inner peripheral surface side from moving axially relative to the outer peripheral surface side due to the axial force provided by the nipple during insertion or withdrawal of the nipple, one of the contacting parts of the two should be concave It is preferable to form a convex portion and integrate the both by fitting the concave and convex portions.

Further, the ring groove formed between the folded inner peripheral surface side and the outer peripheral surface side may be a ring groove into which the end of the hose body is inserted. It is also preferable to form a portion that becomes a resistance in the axial direction between the inserted and held hose body and the folded inner peripheral surface side. As the portion that becomes such a resistance, one portion has a concave or convex ring that makes one round in the circumferential direction, and the other portion has a convex or concave ring that makes one round in the circumferential direction that is in a symmetrical relationship with this ring. Can be formed. By fitting these pairs of rings, the hose body and the folded-back portion of the engaging portion can be integrated.

Further, an outer ring for fastening the outer peripheral surface in a ring shape to the outer peripheral surface of the engaging portion that is abutted and integrated with the inner peripheral surface of the end portion of the hose body that is integrated with the outer ring. It is also preferable to provide a ring-shaped inner ring that supports the inner peripheral surface to enhance the integrity of the engaging portion and the hose body.

The engaging portion is formed as a separate body from the protector and the hose body, and the end portion of the protector is coaxially fitted to the outer peripheral surface of the engaging portion so as to be integrated, and the hose is attached to the inner peripheral surface of the engaging portion. The end of the main body may be coaxially mounted and integrated. In such a case, it is also preferable to provide an outer ring on the outer peripheral surface of the protector for fastening the outer peripheral surface in a ring shape and an inner ring surface for supporting the inner peripheral surface on the inner peripheral surface of the end of the hose body.

In the hose with a protector of the present invention, the hose body and the protector are integrated at the engaging portion. Further, since the engaging portion is formed so that the nipple can be inserted and fixed, a fitting for joining or the like is not required. Further, by integrally forming the protector and the engaging portion, the number of parts is reduced, and the manufacturing cost and the assembling workability are improved.

[0027]

[Embodiment 1] FIG. 1 shows an embodiment 1 according to the present invention.
FIG. 7 is a partially cutaway front view showing a state in which the protector-equipped hose for a fuel hose of the automobile is fitted to the coupled pipe (nipple 50). The resin hose F is a tubular resin hose body 10 provided inside, a flame-proof rubber protector 20 concentrically arranged outside the hose body 10, and a member integrally formed with the protector 20. Joint part 3
It consists of 0 and.

The hose body 10 is made of polyamide resin,
It is composed of a bellows-shaped portion 11 having a predetermined length and cylindrical coupling end portions 12 (hereinafter referred to as end portions) provided at both ends thereof.

The protector 20 comprises a bellows-shaped portion 21 which is in close contact with the bellows-shaped portion 11 of the hose body 10, and engaging portions 30 are integrally formed at both ends thereof. The engaging portion 30 is formed by extending the connection portion 35 integrally superposed on the outer peripheral surface of the end portion 12 of the hose body 10 and the outer side of the end portion 12 and folding back the inner peripheral surface of the end portion 12. And a folded-back portion 38 that is integrally overlapped with. As a material for forming the protector 20 and the engaging portion 30, a soft and flame-retardant resin such as vinyl chloride resin may be used in addition to rubber.

Next, the manufacturing process of the hose with a protector will be schematically described with reference to FIG.

First, as shown in FIG. 2A, an engaging portion 30 made of flame resistant rubber and having a shape in which a folded portion 38 and a connecting portion 35 are axially connected to each other at both ends thereof. The protector 20 having the is prepared. The protector 20 having the engaging portion 30 can be manufactured by a normal rubber hose manufacturing method using a normal core metal. Next, as shown in FIG. 2B, the end jigs 41 are inserted and fitted to the inner peripheral surface sides of the folded portions 38 at both ends. Then, as shown in FIG. 2C, this is inserted into a mold 40 and fitted together, and the parison 15 made of polyamide resin is inserted into the shaft hole of the protector 20 having the engaging portion 30.
Insert. Then, as shown in FIG. 2D, the part of the parison 15 protruding from the end jig 41 is shut off from the outside air by the pressing portions 42 at both ends of the mold 40, and the air supply inserted inside the parison 15 is cut off. High-pressure air is blown into the parison 15 through the tube 43, and the parison 15 is inflated to conform to the inner wall of the protector 20 having the engaging portion 30. Thereafter, the protector 20 having the engaging portion 30 including the molded parison 15 is taken out from the mold 40, the end jig 41 is removed, and the rotary blade 42 is placed in the gap as shown in FIG. 2 (e). Insert and cut the parison 15 and cut the cut part of the parison 15 into the hose body 10.
And it is. As a result, the engaging portion 30 in the state in which the folded-back portion 38 at the end portion extends in the axial direction shown in FIG.
A protector 20 having By folding back the folded portion 38 at the end of the rubber protector 20, as shown in FIG.
The protector 20 having the engaging portion 30 shown in FIG.

In the hose with a protector according to the first embodiment, the folding portion 38 of the engaging portion 30 is folded back to form the hose body 10.
Since the folded-back portion 38 is interposed between the end portion 12 of the hose body 10 and the nipple 50 when the nipple 50 is fitted, it is possible to seal the connection portion between the two by overlapping the inside of the end portion 12 of the hose body 10. Sex is secured. Therefore, unlike the conventional case, a rubber cap for ensuring the sealing property is not required at the connecting portion between the hose body 10 and the nipple 50, a mold for forming the rubber cap is not required, and the rubber cap is molded and fitted. The process becomes unnecessary.
Therefore, a hose with a protector having excellent gasoline permeation resistance and flame resistance can be provided at low cost. [Embodiment 2] In the hose with a protector of Embodiment 2,
A protector 20 having an engaging portion 30 shown in FIG. 3A was prepared. This one is different only in that it has a protector 20 having an engaging portion 30 of the first embodiment and a ring groove 36 that makes one round in the circumferential direction on the inner peripheral surface side of a connecting portion 35 of the engaging portion 30. The parts and materials are the same.

When the hose body 10 is formed on the inner peripheral surface side of the protector 20 with the engaging portion 30 having the ring groove 36 by the same method as in the first embodiment, the ring groove 36 is formed as shown in FIG. 3B. Thus, the parison is formed, and the ring 13 is overlapped with the ring groove 36 so that a part of the end of the hose body 10 makes one round in the circumferential direction. It is formed. The folded portion 38 is folded back and overlaps the concave groove of the ring 13.

In the protector-equipped hose of the second embodiment,
The ring 13 of the hose body 10 restricts the relative movement of the folded portion 38 and the end 12 of the hose body 10 in the axial direction. Therefore, when the nipple is inserted and fixed, the folded-back portion 38 is restrained from moving relative to the end portion 12 of the hose body 10 in the axial direction. By forming a convex ring that fits into the concave groove of the ring 13 on the outer peripheral surface of the tip of the nipple to be inserted and fixed, the nipple can be inserted and fitted more reliably. Further, since the insertion resistance becomes high immediately before the insertion and fitting of the nipple and the insertion resistance becomes low at the time of fitting, there is an advantage that the insertion and fitting of the nipple can be easily known. [Third Embodiment] Next, a hose with a protector according to a third embodiment will be described with reference to FIG. In the hose with a protector according to the third embodiment, the thickness of the folded-back portion 38 of the engaging portion 30 is made thicker than the thickness of the connecting portion 35. As described above, the folded-back portion 3 is deformed when the nipple is inserted.
Since the thickness of 8 is thicker, when the nipple 50 is inserted into the hose with a protector, it is easier to absorb the diameter expansion deformation due to the nipple by the folded-back portion 38, and the nipple 50 can be easily inserted. [Embodiment 4] Next, a hose with a protector of Embodiment 4 will be described with reference to FIG. In this embodiment, the outer diameter rA of the folded portion 38 of the engaging portion 30 is smaller than the inner diameter rB of the connecting portion 35. Accordingly, when the folded-back portion 38 is folded back to the inner surface of the end portion 12 of the hose body 10, it is possible to prevent slack and wrinkles from easily occurring in the overlapping portion of the folded-back portion 38 with the end portion 12 of the hose body portion 10. As a result, the close contact between the folded-back portion 38, the inside of the end portion 12 of the hose body 10 and the nipple 50 can be improved, and the sealability of the hose with a protector can be improved. [Fifth Embodiment] Next, a hose with a protector of a fifth embodiment will be described with reference to FIG. In this hose with protector, as shown in FIG. 6A, the thickness of the boundary portion 37 between the folded-back portion 38 of the engaging portion 30 of the hose with protector and the connecting portion 35 is made thinner than the thickness of other portions. It is in. As a result, when the folding part 38 is folded,
Since the bent portion is thin, it is possible to suppress the rise of this portion and the opening of the hose with a protector is not narrowed, so that the nipple 50 can be easily inserted into the hose. The thin portion is shown in FIGS.
As shown in (d), it may be provided on the folded portion 38 side. In particular, as shown in FIGS. 6 (c) and 6 (d),
When the recess is provided on the outer side, when the folded-back portion 38 is folded back, the opening portion of the engagement portion 30 becomes a funnel-shaped tapered opening portion whose inner diameter expands toward the opening end, so that the nipple 50 is engaged. It can be easily inserted into 30. [Sixth Embodiment] Next, a hose with a protector according to a sixth embodiment will be described with reference to FIG. The hose with a protector according to the sixth embodiment includes a connecting portion 35 of the engaging portion 30 of the hose with a protector.
A ring groove 36 that makes one round in the circumferential direction is formed on the inner peripheral surface side of the hose, and a ring-shaped convex strip 39 that is symmetrical to the ring groove 36 is formed on the inner peripheral surface of the folded portion 38. The portion of the end portion 12 that comes into contact with the ring groove 36 is convex on the outer peripheral surface side, and the inner peripheral surface side forms the concave ring 13 which has a diameter and extends in the circumferential direction.
The ring 13 having the expanded diameter is fitted and fixed to the ring 13, and the folded-back portion 3 is inserted into the concave ring groove on the inner peripheral surface side of the ring 13.
The ring-shaped ridge 39 of No. 8 is fitted.

In the hose with a protector of the sixth embodiment,
Similar to the hose with protector of the second embodiment, the hose body 10
The ring 13 restricts the relative movement of the folded portion 38 and the end 12 of the hose body 10 in the axial direction. Therefore, when the nipple is inserted and fixed, the folded-back portion 38 is restrained from moving relative to the end portion 12 of the hose body 10 in the axial direction. In addition, the nipple 50 to be inserted and fixed
By forming the convex ring 51 that fits into the concave groove of the ring 13 on the outer peripheral surface of the tip end of the, the insertion and fitting of the nipple 50 becomes more reliable. Further, since the insertion resistance becomes high immediately before the insertion and fitting of the nipple 50 and the insertion resistance becomes low at the time of fitting, there is an advantage that the insertion and fitting of the nipple 50 can be easily known.

In the protector-equipped hose of this embodiment, after the nipple 50 is inserted and fitted into the engaging portion 30, the engaging portion 30
A band-shaped tightening member 55 is attached to the outer peripheral surface of the, and the engaging portion 30 is tightened in the nipple 50 in the axial direction to make the engagement between the nipple 50 and the engaging portion 30 stronger. [Seventh Embodiment] Next, a hose with a protector according to a seventh embodiment will be described with reference to FIG. The hose with a protector of this embodiment has a boundary portion 3 between the folded portion 38 and the connecting portion 35.
The inclination 37a is provided on the inner side surface of 7. Accordingly, when the folded-back portion 38 is folded back, the inclined portion 37a of the folded-back portion is provided on the inner peripheral surface side from the outer end portion to the inside of the hose with protector, so that the nipple 50 can be easily inserted into the hose with protector. it can. [Embodiment 8] Next, a hose with a protector of Embodiment 8 will be described with reference to FIG. As shown in FIGS. 9 (a) and 9 (b), the protector-provided hose of the eighth embodiment has a ring which is perpendicular to the lengthwise direction of the folded-back portion 38 on at least one of the inner side surface and the outer side surface of the folded-back portion 38. Shaped protrusion 38
a and 38b are provided. Thereby, the protrusion 3
Since 8a and 38b have the same function as the O-ring, it is possible to improve the sealing performance of the hose with a protector.
When the protrusion 38a is provided on the inner side, the nipple 50 is inserted into the hose with a protector and then the nipple 50 is inserted.
When the pull-out force is applied to the fold-back portion 38, it is difficult for the folded-back portion 38 to be turned over, so that it is possible to prevent the nipple 50 from being pulled out together with the turned-up portion 38. Further, when the protrusion 38b is provided on the outside, the opening area can be increased at the outer end of the protector-equipped hose, so that the nipple 50 can be easily inserted into the protector-equipped hose.

The shapes of the protrusions 38a and 38b are not limited to the semicircular shape, and for example, FIGS. 9 (c) and 9 (d) are used.
As shown in FIG. 5, the sawtooth shapes 38c and 38d may be used. Further, although not shown, the protrusions may be provided on both the inner side surface and the outer side surface. [Ninth Embodiment] Next, a hose with a protector of a ninth embodiment will be described with reference to FIG. As shown in FIG. 10A, the protector-provided hose of the ninth embodiment has a folded portion 38.
A ring-shaped protrusion 38a is provided on the inner side surface of the connecting portion 35 perpendicularly to the lengthwise direction of the folded-back portion 38, and a ring-shaped groove 35a fitted to the ring-shaped protrusion 38a is provided on the inner side surface of the connecting portion 35. It is in. The ring-shaped ridge 38a has the ring-shaped groove 3
When the force for pulling out the nipple 50 is applied after the nipple 50 is inserted into the hose with the protector by being fitted into the ring 5a, the ring-shaped protrusion 38a and the ring-shaped groove 35 are formed.
Due to the coupling action with a, the folded-back portion 38 is surely prevented from being turned over. As shown in FIG. 10B, a ring-shaped ridge 38a may be provided at the tip of the folded-back portion 38, and when the folded-back portion 38 is folded back to the connecting portion 35, it is joined to the ring-shaped projected ridge 38a. Thus, the ring-shaped groove 35a may be provided. Further, as shown in FIG. 10C, a ring-shaped ridge 14 may be provided on the end 12 of the hose body 10 and fitted into a ring-shaped groove 38 e provided at the tip of the folded-back portion 38. [Embodiment 10] Next, a hose with a protector of Embodiment 10 will be described with reference to FIG. As shown in FIG. 11A, the protector-equipped hose of Example 10 has the end 12 of the hose body 10 arranged up to an intermediate portion of the connecting portion 35 of the engaging portion 30. As a result, the folding portion 3
By bending 8 the part of the folded-back portion 38 directly overlaps the connecting portion 38 at the portion beyond the end 12 of the hose-body 10. This overlapping portion W is highly flexible because it is formed only of rubber that does not allow the end 12 of the hard hose body 10 to enter. Therefore, the nipple 5
0 can be easily inserted into the engaging portion 30. Also,
The gasoline permeation resistance of the engaging portion 30 is ensured by the overlapping portion of the folded-back portion 38 with the end portion 12 of the hose body 10. In addition, as shown in FIG.
8 and the recess 12 in the connecting portion 35 that does not overlap the end portion 12
By providing the convex portion 38f and the convex portion 38f and engaging them with each other, when the pulling force acts on the nipple 50, the folded portion 38f
It is possible to prevent the nipple 50 from being pulled out and the nipple 50 being pulled out. [Eleventh Embodiment] Next, an eleventh embodiment will be described with reference to FIG. In the eleventh embodiment, as shown in FIG. 12A, the hose body 10 has a two-layer structure. That is, the inner side of the hose body 10 is constituted by the layer 10b having high gasoline permeation resistance, and the outer side is constituted by the layer 10c having good adhesion.
It is composed by. The layer 10c having good adhesiveness can be obtained by applying an adhesive or by subjecting the outer surface of the layer 10b having high gasoline permeation resistance to a surface treatment such as sodium etching treatment, plasma flame treatment, or sputtering treatment. To be In this way, the hose body 1
The hose body 10 can be directly bonded to the engaging portion 30 and the protector 20 by forming the layer 10c having good adhesiveness on the outside of 0. For this reason, when the hose body 10 is thin, it is possible to avoid a so-called shelved state in which the hose body 10 is recessed inward even if the inside of the hose is in a negative pressure state. Thereby, the selection range of the wall thickness of the hose body 10 can be expanded.

Further, as shown in FIG. 12 (b), for example, the inside of the hose body 10 may be constituted by a hard layer 10b having high gasoline permeation resistance, and the outside may be provided with a soft and flexible layer 10c. it can. And, a layer 10b that is hard and has high gasoline permeation resistance in the inner layer other than the end portion 12
To increase the strength of the hose body 10 and increase the thickness of the end 1
With respect to No. 2, the nipple 50 can be easily inserted by making the outer layer having good flexibility 10c thick. [Embodiment 12] Next, a protector-equipped hose of Embodiment 12 will be described with reference to FIG. In the hose with a protector of Example 12, the hose body 1 excluding the end 12
A heat-resistant layer is provided by providing a space between 0 and the protector 20. In the hose with a protector according to the twelfth embodiment, the engaging portion 30 and the protector 2 are provided.
The hose body 1 is pre-molded separately from the hose 0, and the engaging portion 30 and the protector 20 are already molded later.
0 is assembled, and the end 12 of the hose body 10 is engaged with the engaging portion 30.
It is manufactured by sandwiching and fixing the connecting portion 35 and the folded-back portion 38.

There is a space between the hose body 10 and the protector 20. Therefore, even if the protector 20 is heated to a high temperature, the heat is blocked in the space and the hose body 10
Hard to reach. Therefore, melting of the hose body 10 is delayed, and the flame resistance of the hose with a protector can be improved.

Further, since the space is provided between the protector 20 and the hose body 10, they are easily displaced in the lengthwise direction, but the end 12 of the hose body 10 is folded back to the connecting portion 35 of the engaging portion 30. Since it is sandwiched and fixed to the portion 38, the position of the hose body 10 is fixed. Therefore, the protector 20 and the hose body 10 can be prevented from being displaced.

Although the protector-equipped hoses of Examples 1 to 11 have a structure in which no space is provided between the hose body 10 and the protector 20, unlike the protector-equipped hose of Embodiment 12, A space may be provided between the hose body 10 and the protector 20. Also,
The hose body 10 and the protector 20 may have bellows shapes with different pitches. Thereby, even if the hose body 10 is formed of hard resin, metal resin, or the like, the flexibility of the hose with a protector obtained can be ensured. Regarding the lengthwise deviation of the protector 20 and the hose body 10, by fixing the end 12 of the hose body 10 with the engaging portion 30, the hose body 10 and the protector 20 can be prevented from being misaligned.

In each of the above embodiments, the engaging portion 3
Although the end portion 12 of the hose body 10 is only sandwiched and fixed at 0, the engaging portion 30 and the end portion 12 of the hose body 10 may be bonded. As a result, when a pulling force acts on the nipple 50, it is possible to prevent the fold 50 of the engaging portion 30 from being turned over and the nipple 50 from being pulled out.

In each of the above embodiments, the wall thickness of the hose body 10 is the same between the bellows-shaped portion 11 and the end portion 12, but the end portion 12 should be thinner than the middle portion. You can also This enhances the flexibility of the engaging portion 30 at the end of the hose into which the nipple 50 is inserted. Therefore, the nipple 50 can be easily inserted into the hose. Since the bellows-shaped portion 11 in the middle portion has a normal wall thickness, the gasoline permeation resistance of the hose is not impaired.

In each of the above embodiments, the polyamide resin is used as the hose body 10. However, instead of the polyamide resin, fluorine-based, polyester-based, polyvinyl chloride-based, polyacetal-based, PPS-based gasoline resistant materials,
A resin having excellent gasoline permeation resistance or a metal such as stainless steel or aluminum may be used. [Embodiment 13] A hose with a protector of Embodiment 13 is shown in FIG.
4 will be described. In this hose with a protector, the hose body 10 shown in FIG. 14 (a) is used. The hose body 10 is made of polyamide resin like the hose with a protector of the first embodiment, and is preliminarily adjusted by blow molding. In addition, the engaging portion 30 and the protector 20
Is integrally molded with rubber as shown in FIG. 14 (b). In this embodiment, the engaging portion 30 on the right side of the drawing is formed with the folded-back portion 38 previously folded. The engaging portion 30 on the left side of the drawing is formed so as to extend in the axial direction. Further, a ring-shaped groove 35g is formed in the connecting portion 35 of the engaging portion 30, and a ring-shaped groove 35g is formed in the folded portion 38.
A ring-shaped protrusion 35f is formed at a position corresponding to, and in the state where the folded-back portion 38 is folded back, as shown in the engaging portion 30 on the right side of the drawing, a ring-shaped projected portion 35f is formed. Deep grooves are formed.

The hose with a protector of this embodiment is shown in FIG.
As shown in FIG. 4 (c), first, the hose body 10 is inserted into the groove between the connecting portion 35 and the folded portion 38 of the engaging portion 30 on the right side of the drawing.
Insert the end 12 of the. Finally, as shown in FIG. 14D, the folded portion 38 on the right side of the figure is folded toward the axial center side to manufacture the hose with the protector of the present embodiment. An expanded diameter portion 13 is provided at the end 12 of the hose body 10.
The enlarged diameter portion 13 of the end portion 12 and the groove 35g of the connecting portion 35
And the ring-shaped protrusion 35f of the folded portion 38,
The end portion 12 of the hose body 10 has a connecting portion 35 and a folded portion 3.
It is fixed in the groove between 8 and 8 without slipping in the axial direction.

In the present embodiment, the folded-back portion 3 of the engaging portion 30.
Since 8 is folded in advance, the work efficiency is increased as it is not necessary to fold the portion. If the hose body 10 can be attached to the engaging portion 30 later, the engaging portions 30 at both ends can be molded in a state of being folded in advance. [Embodiment 14] A hose with a protector of Embodiment 14 is shown in FIG.
5 shows. In this hose with a protector, at the boundary between the protector 20 and the engaging portion 30, a portion 29 having a small inner peripheral diameter that is projected in a ring shape toward the shaft center is formed,
At the boundary between the bellows-shaped portion 11 and the end portion 12 of the hose body 10, a ring groove 19 recessed toward the shaft center is formed to be fitted into the portion 29 protruding in a ring shape toward the shaft, and the hose body 10 is fitted. I am letting you. Thereby, the protector 20 having the engaging portion 30
The hose body 10 is more surely integrated with each other, and the possibility that the hose body 10 will fall out of the engaging portion 30 is further reduced.

In the protector-equipped hose of this embodiment, a band-type tightening tool 55 is used to fasten the engaging portion 30 to the nipple 50, and the engaging portion 30 is urged in the axial direction from the outer peripheral side of the engaging portion 30. The nipple 50 is strongly sandwiched between it and the outer peripheral surface. [Embodiment 15] A hose with a protector of Embodiment 15 is shown in FIG.
6 shows. This hose with a protector is the end 12 of the hose body 10 used in the hose with a protector of the fourteenth embodiment.
The diametrically enlarged portion 51 of the nipple 50 to be inserted and held is inserted into the end portion 12 of the hose body 10. Since the hard hose body 10 does not enter most of the engaging portion 30 in the axial direction, the nipple 5
Insertion of 0 is easy. In addition, the end 1 of the hose body 10
Since the tip portion of the folded-back portion 38 of the engaging portion 30 is sandwiched between 2 and the enlarged diameter portion 51 of the nipple 50, that portion exerts a sealing function. Therefore, the sealing property is also excellent. [Embodiment 16] This hose with a protector is shown in FIG. The hose with a protector is made separately of a polyamide resin hose body 10 and a rubber engaging portion 3
And a protector 20 having 0.

The hose body 10 comprises a bellows-shaped portion 11 located at the center of the hose body 10 and end portions 12 integrally formed at both ends thereof. Each end 12 is adjacent to the bellows-shaped portion 11 and has a small diameter first small diameter portion 121, a large diameter first large diameter portion 122, a second small diameter portion 123, and a second large diameter portion having a semicircular cross section. 1
24 and a trumpet-shaped end 12 whose tip expands like a trumpet
It consists of 5. On the other hand, the protector 20 having the engaging portion 30 is formed in a bellows shape with a low wave, and the engaging portion 30 is formed to have a smaller diameter and a larger thickness than the protector 20. In addition, the shape of the inner peripheral surface of the engaging portion 30 is such that the hose body 1 fitted with it
First small diameter portion 30 that is symmetric with the outer peripheral surface shape of the end portion 12 of 0
1. Large diameter first expanded portion 302, second small diameter portion 30
3, a second enlarged diameter portion 304 having a semicircular cross section, a trumpet-shaped bottomed groove 305 whose tip is enlarged like a trumpet, and a ring-shaped lip 306 formed by the trumpet-shaped bottomed groove 305. Further, the outer peripheral surface of the engaging portion 30 has a slightly smaller diameter on the end side from the position corresponding to the bottom of the trumpet-shaped bottomed groove 305, and further has a ring-shaped small projection on the tip side.

The hose body 10 is inserted into the protector 20 having the engaging portion 30, and the ends 12 thereof are respectively engaged with the engaging portion 3.
It is fitted to the inner peripheral surface of 0. Further, the trumpet-shaped end portion 125 of each end portion 12 is pushed into the trumpet-shaped bottomed groove 305 of the engaging portion 30 to be mounted. By mounting the trumpet-shaped end portion 125, the ring-shaped lip 306 of the engaging portion 30 has the tip of the lip protruding to the axial center side, as clearly shown on the right side of the drawing.

When the nipple 50 is inserted into this hose with a protector, the expanded diameter portion 51 at the tip of the nipple 50 fits into the second expanded diameter portion 124 of the end portion 12 of the hose body 10, and the ring-shaped lip 306 becomes the hose. End 12 of body 10
It will be sandwiched between the trumpet-shaped end portion 125 and the outer peripheral surface of the nipple 50. As a result, the ring-shaped lip 3
06 seals between the hose body 10 and the nipple 50.

In the protector-equipped hose of this embodiment, since the trumpet-shaped end portion 125 of the hose body 10 is short in the axial direction, it is easy to mount the engaging portion 30 in the trumpet-shaped bottomed groove 305 and is excellent in assembling. ing. In addition, the engaging portion 30 and the hose body 10
The end portion 12 is fitted into the expanded diameter portion, the small diameter portion, and the expanded diameter portion that are continuous in the axial direction, so that the integration is high. Further, since the ring-shaped lip 306 functions as a seal, the sealing property is good. [Embodiment 17] Fig. 18 shows a cross section of the main part of this hose with a protector. This hose with protector is obtained by slightly changing the shape of the end 12 of the hose body 10 and the shape of the inner peripheral surface of the engaging portion 30 of the hose with protector of the sixteenth embodiment. That is, the portion between the trumpet-shaped end portion 125 of the end portion 12 of the hose body 10 and the second expanded diameter portion 304 having a semicircular cross section is widened. As a result, the trumpet-shaped end portion 125 of the end portion 12 of the hose body 10 is sandwiched between the engaging portion 30 and the nipple 50 by the clamp 55.

In the protector-equipped hose of this embodiment, the end portion 12 of the hose body 10 is clamped by the clamp 55.
Since it is sandwiched between the nipple 50 and the hose body 1,
The bond with 0 becomes strong. [Embodiment 18] FIG. 19 shows a cross section of the main part of this hose with a protector. This hose with protector has an end 12
The enlarged diameter portion 13 is provided in the middle of the axial direction of the
A ring-shaped stopper 381 protruding in the axial direction is provided at the tip of the folded-back portion 38 of 0.

Expanded portion 1 of end 12 of this hose body 10
3 has a positional relationship corresponding to the expanded diameter portion 51 of the nipple 50 to be mounted. The expanded diameter portion 51 of the nipple 50 is fitted and locked to the expanded diameter portion 13 of the end portion 12, and the tip of the nipple 50 is a ring. The stopper 381 is abutted and locked. This facilitates fitting and locking of the nipple 50. [Embodiment 19] FIG. 20 shows a cross section of the main part of this hose with a protector. This hose with a protector has a plurality of through holes 121 arranged in a ring shape in the circumferential direction at the tip of the end 12 of the hose body 10. The connecting portion 35 of the engaging portion 30 has a concave portion 351 at a position corresponding to the through hole 121 of the end portion 12, and the through hole 12 of the folding portion 38.
1, a convex portion 382 that fits into the concave portion 351 at a position corresponding to 1.
Are formed. When the folded-back portion 38 is folded back, these convex portions 382 penetrate through the through holes 121 and are fitted and locked in the concave portions 351 of the connecting portion 35. These convex portions 38
The folded-back portion 38 is integrally coupled by the coupling portion 35 by fitting and locking the 2 and the concave portion 351. This prevents the folded-back portion 38 from being pulled out from the connecting portion 35 when the nipple is pulled out. [Embodiment 20] FIG. 21 is a sectional view showing the main part of this hose with a protector. This hose with protector is a hose body 1
21, the end 12 of the hose body 10 has a wavy shape that is uneven in the circumferential direction and can be expanded in diameter, as shown in the cross section on the right side of FIG. Hose body 10
The ring groove provided in the engaging portion 30 formed integrally with the end portion 12 also has a wavy shape that is uneven in the circumferential direction so as to match the cross-sectional shape of the end portion 12.

In the protector-equipped hose of this embodiment, since the end 12 of the hose body 10 has a wavy shape that is uneven in the circumferential direction, the end 12 can be easily expanded or reduced in diameter. Therefore, the nipple can be easily attached to the engaging portion 30. [Embodiment 21] FIG. 22 shows this hose with a protector. This protector-equipped hose is characterized in that the protector 20 is formed of two parts that are in a fitting relationship such that they can move relative to each other in the axial direction. That is, the protector 20
Is composed of a first protector 23 having a small outer peripheral diameter and a second protector 24 having a large inner peripheral diameter coaxially covering the first protector 23. First protector 23 and second protector 2
4 has a telescope relationship, and the axially overlapping parts of both can be expanded. The engaging portions 30 are integrally formed at the ends of the first protector 23 and the second protector 24, respectively.

This hose with a protector is shown in FIG.
As shown in, the first protector 23, the second protector 2
4 and the hose body 10 are individually manufactured, and the ends 12 of the hose body 10 are respectively attached to the first protector 23,
It can be assembled by mounting it in the ring groove of the engaging portion 30 formed integrally with the second protector 24.
Since the pair of engaging portions 30, 30 are formed as separate parts, each end portion 12 of the hose body 10 is connected to the corresponding engaging portion 3.
Since it can be inserted into the ring grooves of 0 and 30, the insertion work becomes extremely easy.

As shown in FIG. 22 (c), the protector-equipped hose of this embodiment is highly flexible because the protector 20 can be expanded and contracted in the axial direction. In addition, since it is less necessary to form the protector 20 in a bellows shape, the die cost is low. Further, the same protector can be used for a plurality of protector-equipped hoses having different axial lengths of the hose body 10. [Embodiment 22] FIG. 23 shows a hose with a protector of this embodiment.
Shown in. The hose with a protector includes a resin hose body 10, a rubber protector 20, and a rubber engaging portion 30.

The hose body 10 comprises a bellows-shaped portion 11 and end portions 12 integrally formed at both ends thereof.
Each end portion 12 is formed with an annular expanded diameter portion 125 protruding outward in the radial direction at an axially intermediate position, and a ring-shaped groove 126 is formed at the tip thereof, and the ring-shaped groove 126 is formed. In the above, it is elastically fitted into the annular expanded portion 51 of the nipple 50 of the mating pipe.

A hard ring 38 is formed on the inner peripheral surface of the one end 12.
5 is fitted. Here, the hard ring 385 may be made of resin or metal.

An annular protrusion 127 is formed at the boundary between the end portion 12 and the bellows-shaped portion 11 so as to protrude inward in the radial direction. The protrusion 127 is for positioning with respect to the hard ring 385.

The protector 20 is composed of a thick and cylindrical end portion 205 and a bellows-shaped portion 206 between them. A predetermined gap is formed between the bellows-shaped portions 206 and 11 between the protector 20 and the hose body 10, and an air layer 42 is formed between them.

The engaging portion 30 is a short tubular member, and a fixed portion 307 and a fitting seal portion 308 are formed continuously in the axial direction. The engaging portion 30 is fitted to the hose body 10 and the protector 20 with the fixing portion 307 sandwiched between the end portions 12 and 205.
The hard ring 385 and the end 205 of the protector 20
The fixing portion 307 and the end portions 12 and 205 of the hose body 10 and the protector 20 are clamped and fixed to each other by the resin ring 206 disposed on the outer surface of the hose body 10 and the protector 20.

The resin ring 206 is used for the hose body 1
0, the protector 20, and the engaging portion 30 are injection-molded in a state in which the hose body 10, the protector 20, and the fixing portion of the engaging portion 30 are pressed together with the hard ring 385 in a state of being set in the injection mold.

However, instead of the resin ring 206 formed by such injection molding, a metal ring may be used for caulking and fixing.

The engaging portion 30 is directly fitted to the outer peripheral surface of the nipple 50 at the fitting seal portion 308 which is continuous with the fixed portion 307, and is clamped by the clamp member 55.

The hose body 10 of this example is made of polyamide resin, and the protector 20 and the engaging portion 30 are made of CR rubber and NBR / PVC rubber, respectively.

However, the hose body 10 may be a resin single layer or a laminated structure of two or more layers. In this example, the hose body 10 is formed by blow molding a resin material.

Any material can be used for the protector 20 and the engaging portion 30 as appropriate.

In this example, the hose with a protector and the dimensions of each part are such that the total hose length is 240 mm, and the hose body 1
The thickness of the bellows-shaped portion 11 of 0 is 0.5 mm, the pitch of each bellows of the bellows-shaped portion 11 is 6 mm, and the height is 6 mm.

The protector 20 has a bellows-shaped portion 206.
Has a wall thickness of 2 mm, and the cylindrical end 205 has a wall thickness of 2 mm
And the engaging portion 30 has an axial length of 60 m.
m, the thickness of the fixed portion 307 is 4.5 mm, the fitting seal portion 3
The thickness of 08 is 5 mm. The resin ring 206
Is made of polyamide resin. However, these dimensional values are merely examples.

In the hose with a protector of this embodiment, the hose body 10, the protector 20 and the engaging portion 30 are integrally assembled, and the fitting seal portion 308 of the engaging portion 30 is fitted into the nipple 50 of the mating pipe. Just squeeze and clamp,
These hose body 10, protector 20, and engaging portion 30
It is possible to easily connect the hose with a protector consisting of the three members to the nipple 50, and the connection workability is also good.

Further, the engaging portion 30 is flexible and closely adheres to the nipple 50 without any gap, and has a good sealing property.

Further, in this example, since the tip of the hose body 10 overlaps with the tip of the nipple 50 in a tightly fitted state in an elastic fit state, the sealing property is good and the engaging portion 30 is directly exposed to the internal fluid (gasoline). Therefore, deterioration of the engaging portion 30 due to gasoline is suppressed, and the engaging portion 3
It is possible to prevent the gasoline inside 0 from permeating to the outside, and to prevent the fitting position between the nipple 50 and the tip of the hose body 10 from being displaced due to vibration or the like, and the reliability of the connecting portion is also good.

Further, while the hose body 10 is made of resin and has good gasoline resistance and gasoline permeation resistance, a flame-resistant rubber protector 20 is arranged outside the hose body 10 so that the hose body 10 also has good heat resistance and flame resistance. Is.

Further, since it is not necessary to use an expensive material such as fluororubber, the price can be kept low.

In addition, in this example, the end portion 12 of the hose body 10 is
The engaging portion 30 and the engaging portion 30 are fitted in close contact with each other, and are pressed from both inside and outside by the hard ring 385 and the resin ring 206 via the end portion 205 of the protector 20, and further the end portion of the hose body 10. An annular projecting portion 125 that projects outward in the axial direction is formed at 12, and this projecting portion 125 is in a state of biting into the engaging portion 30, so that the hose body 10 and the engaging portion 30 are separated from each other. The sealing property of the fitting part is also good.

Further, in the case of the hose with a protector of this example, since the engaging portion 30 and the protector 20 are separate bodies,
There is an advantage that these can be composed of different rubber materials having different characteristics.

That is, the engaging portion 30 can be made of a rubber material having excellent gasoline permeation resistance, and the protector 20 can be made of a rubber material having excellent flame resistance, and an appropriate rubber material is used for each part according to a required function. be able to. As a result, it is possible to construct a hose with a protector having a required characteristic by using an inexpensive rubber material.

At the same time when the resin ring 206 is injection molded, the resin ring 206 and the hard ring 385 clamp the end portions 12 and 205 of the hose body 10 and the protector 20 and the fixing portion 307 of the engaging portion 30. As a method for fixing the state, the method shown in FIG. 24 can be preferably used.

In this method, as shown in FIG. 24 (A), the injection molding die 40 is provided with pressing portions 44, 46.
Injection molding die 40,
The hard ring 385, the hose body 10, the protector 20, and the engaging portion 30 are set in 42 and are matched with each other, and at this time, the end portion 205 of the protector 20 is pressed by the holding portions 44 and 46 (see FIG. 24 ( See B)).

Then, the resin material is injected into the cavity 48 formed between the pressing portions 44 and 46 from the injection port 60 formed inward in the radial direction at the intermediate position in the axial direction thereof to mold the resin ring 206 ( 24 (C)), at the same time, together with the hard ring 385, the hose body 10
End 12 of the shaft, fixed portion 307 of the engaging portion 30, protector 2
The end 205 of 0 is compressed and fixed.

According to this method, the molten resin injected from the injection port 60 presses the engaging portion 30 against the end portion 12 of the hose body 10 via the end portion 205 of the protector 20 to ensure the seal between them. The effect is obtained.

As shown in FIG. 26 (A), the axially intermediate portion of the end portion 12 of the hose body 10 is annularly recessed inward in the radial direction, and the engaging portion 30 is accommodated in the recessed portion 124. 26B, it is also possible to bite the meat, and as shown in FIG. 26B, the end portion 12 is provided with a pair of radially projecting annular projecting portions 125 and 124. It is also possible to determine the position of the hard ring 385. [Embodiment 23] FIG. 25 shows a hose with a protector according to Embodiment 23 of the present invention. In this example, the protector 20,
A part of the cylindrical ends 12 of the hose body 10 in the axial direction is formed into a convex shape that projects outward in the radial direction in an annular shape, and is formed in the end 206 of the protector 20 in the radial direction. The convex curved portion (engaging convex portion) 127 of the end portion 12 of the hose body 10 is fitted into the facing annular engaging concave portion 207.

Further, the annular engaging convex portion 305 of the engaging portion 30 is fitted inside the inward annular engaging concave portion 128 of the end portion 12 of the hose main body 10. Three
0, the end portion 206 of the protector 20 and the end portion 12 of the hose body 10 are fixed to each other.

At the end portion 12 of the hose body 10, an annular second engaging recess 129 is formed at a position adjacent to the engaging recess 128 so as to extend outward in the radial direction. An inward second convex curved portion (engaging convex portion) 208 of the end portion 206 of the protector 20 is fitted inside and fixed to each other.

In addition to the above, the present invention is applicable to air intake hoses for automobiles and other hoses, and it is also possible to use various materials other than the above examples as the hose body and protector. Can be configured in a form in which various changes are made based on the knowledge of those skilled in the art without departing from the spirit of the invention.

[0086]

In the hose with protector of the present invention, since the engaging portion is integrally formed, it can be easily joined to another device such as a nipple. Furthermore, since the engaging portion integrally fixes the hose body and the protector, the hose body and the protector are highly integrated. Further, the hose with a protector of the present invention is most suitable as a hose used for transportation of gasoline, kerosene, chemical agents and the like.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a hose with a protector according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view schematically showing a manufacturing process of the hose with a protector according to the first embodiment.

FIG. 3 is a sectional view schematically showing a main part of a hose with a protector according to a second embodiment.

FIG. 4 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a third embodiment before and after folding back.

FIG. 5 is a partially enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a fourth embodiment.

FIG. 6 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a fifth embodiment before and after folding back.

FIG. 7 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a sixth embodiment before and after folding back.

FIG. 8 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a seventh embodiment before and after folding back.

FIG. 9 is a partially enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion which constitute an engaging portion of a hose with a protector according to an eighth embodiment.

FIG. 10 is a partially enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion which constitute an engaging portion of a hose with a protector according to a ninth embodiment.

FIG. 11 is a partial enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to a tenth embodiment before and after folding back.

FIG. 12 is a partial enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector according to an eleventh embodiment before and after folding back.

FIG. 13 is a partially cutaway sectional view of a hose with a protector according to a twelfth embodiment.

FIG. 14 is a cross sectional view schematically showing the manufacturing process of the hose with a protector of Example 13.

FIG. 15 is a partially cutaway sectional view of a hose with a protector according to a fourteenth embodiment.

FIG. 16 is a partially cutaway sectional view of a hose with a protector according to a fifteenth embodiment.

FIG. 17 is a partially cutaway sectional view of a hose with a protector according to a sixteenth embodiment.

FIG. 18 is a partially enlarged cross-sectional view showing an engaging portion and an end portion of a hose body of a hose with a protector according to a seventeenth embodiment.

FIG. 19 is a partial enlarged cross-sectional view showing an engaging portion and an end portion of a hose body of a hose with a protector according to an eighteenth embodiment.

FIG. 20 is a partial enlarged cross-sectional view showing an engaging portion and a hose body end portion of a hose with a protector according to a nineteenth embodiment.

FIG. 21 is a partially enlarged cross-sectional view showing an engaging portion and an end portion of a hose body of a hose with a protector according to a twentieth embodiment.

FIG. 22 schematically illustrates a partially broken cross section, a partial cross section, and an appearance of the protector-provided hose of Example 21.

FIG. 23 is a partially cutaway cross-sectional view of a hose with a protector of Example 22.

FIG. 24 schematically shows an example of a method for manufacturing the resin ring of the hose with a protector according to the twenty-second embodiment.

FIG. 25 is a partially broken cross-sectional view of a hose with a protector of Example 23.

FIG. 26 is a cross-sectional view of essential parts of a modified example of the hose with a protector according to the twenty-second embodiment.

[Explanation of symbols]

10: Hose body 20: Protector 30: Engagement part

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] September 30, 2002 (2002.9.3)
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

[Title of the Invention] protector insured over the scan

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

2. The position where the concave or convex ring of the hose body engages with the convex or concave engaging ring that goes around the outer peripheral surface of the tip portion of the nipple inserted and held in the engaging portion. provided, the hose body of the concave or convex of the ring is convex or concave engagement ring and indirectly fit engagement locked by claim 1, wherein the hose with a protector of the nipple.

9. whether the engaging portion said center-side direction is provided coaxially on the center side of the protector which is formed integrally
6. The protector according to claim 5 , wherein the hose main body has a bottomed ring groove that is open in the axial direction and extends toward the insertion opening side, and the end of the hose body is inserted and locked in the bottomed ring groove. hose.

Wherein said engaging portion said center-side direction is provided coaxially on the center side of the protector which is formed integrally
And with a ring-shaped lip that has a tip in the axial direction ,
The hose with a protector according to claim 5, wherein an end of the hose body is coaxially held on the centrifugal direction side of the lip.

17. The protector is composed of a pair of parts, one end of one part is coaxially fitted to one end of the other part, and is relatively movable in the axial direction.
The hose with a protector according to 1, 4, or 11 .

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

[0010]

A hose with a protector according to the present invention comprises a cylindrical hose body and an outer peripheral surface of the hose body.
A cylindrical protector coaxially arranged in a state of being covered with a space , and integrally extending from the end of the protector.
A connecting portion that is superposed on the outer peripheral surface of the end of the hose body
And the hose body that integrally extends from the end of the connecting portion.
Possess a folded portion superimposed on the inner peripheral surface of the end portion of,
A cylindrical engaging portion which forms a nipple inserting opening where a nipple is inserted and coupled, Ri Tona, end of the hose body circumferential direction
A concave or convex ring when viewed from the inner peripheral surface side
And the engaging portion has a concave shape at the end of the hose body.
Or at least one of the inner and outer peripheral surfaces of the convex ring
Characterized Rukoto close contact with the surface has been locked in a mold symmetrical. Provide a space between the protector and the hose body.
Although it is easy for the two to slip in the lengthwise direction due to
The end of the main body is clamped by the connecting part of the engaging part and the folded part.
Since it is fixed, the position of the hose body is fixed. This
Therefore, prevent the protector from slipping off from the hose body.
You can A hose with a protector of another embodiment of the present invention is
The cylindrical hose body and the outer peripheral surface of the hose body are separated by a space.
Tubular tech that is coaxially arranged in a state of being covered by
The hose body, the hose body and the protector at both ends.
Nipple insertion that physically joins and inserts the nipple
The protector, which comprises a tubular engagement portion forming a mouth,
Near the boundary between the engagement part and the engaging part
The hose body and the ho
Near the boundary with the end of the main body
It is characterized by having a ring groove that fits the minute. this
The protector having the engaging portion and the hose body are
Securely integrated, the hose body falls out of the engaging part
It is less likely. In addition, the technology of the present invention
The hose with a cable is
Arranged coaxially with the peripheral surface covered with a space
Cylindrical protector and one end from the protector
Extending over the outer peripheral surface of the end of the hose body
The connecting part and the hose extending integrally from the end of the connecting part.
With the folded-back portion that is superposed on the inner peripheral surface of the end of the
Has a nipple insertion opening where the nipple is inserted and joined
And an end portion of the hose body,
Is concave or convex when viewed from the inner peripheral surface side that makes one round in the circumferential direction
Has a ring, and the engaging portion is at the end of the hose body.
Less concave or convex ring inner and outer surfaces
Both are closely attached to one surface and are symmetrically locked to each other.
In the vicinity of the boundary between the protector and the engaging part, the
The hose has a small inner diameter that protrudes like a hose.
In the vicinity of the boundary between the body and the end of the hose body, the inner diameter is
Characterized by having a ring groove that fits with a small part of
To do.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Delete

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0015

[Correction method] Change

[Correction content]

A portion where the hose body and the engaging portion come into contact with each other, that is, an end portion of the hose body may have a shape having a concave or convex ring when viewed from the inner peripheral surface side that makes one round in the circumferential direction. . The ring and the convex or concave locking ring provided at the distal end portion outer peripheral surface of the nipple which is inserted and held in or engaging portion as the fitting engagement portion to increase the integrity of the hose body and the engagement portion the indirect fitted locking portion to be locked mating engagement.

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

The engaging portion is located at one end of the protector.
Physically extended and superposed on the outer peripheral surface of the end of the hose body.
Hose book that integrally extends from the end of the connecting part
It is also possible to have a folded portion superimposed on the inner peripheral surface of the body. In such a case, the nipple is inserted and held in the shaft hole formed by the folded portion . To prevent the folded part from moving in the axial direction relative to the connecting part due to the axial force exerted by the nipple during insertion or withdrawal of the nipple, a concave part is formed in one of the contact parts and a convex part is formed in the other part. It is preferable that the both are integrated by fitting.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Name of item to be corrected] 0023

[Correction method] Change

[Correction content]

Further, the ring groove formed between the folded portion and the connecting portion may be used as the ring groove into which the end portion of the hose body is inserted. And with the hose body inserted and held
It is also preferable to form a portion that becomes a resistance in the axial direction between the folded-back portion . As the part that becomes such resistance,
It is possible to form a concave or convex ring that makes one round in the circumferential direction on one portion and a convex or concave ring that makes one round in the circumferential direction that has a shape symmetry relationship with the ring at the other portion. By fitting these pairs of rings, the hose body and the folded-back portion of the engaging portion can be integrated. Also,
The outer peripheral surface of the engaging portion that is brought into contact with and integrated with the outer peripheral surface that fastens the outer peripheral surface in a ring shape, and the inner peripheral surface of the end portion of the hose body that is integral support the inner peripheral surface. It is also preferable to provide a ring-shaped inner ring to enhance the integrity of the engaging portion and the hose body.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Name of item to be corrected] 0027

[Correction method] Change

[Correction content]

[0027]

[ Reference Example 1] FIG. 1 shows a reference example 1 according to the present invention.
FIG. 7 is a partially cutaway front view showing a state in which the protector-equipped hose for a fuel hose of the automobile is fitted to the coupled pipe (nipple 50). The resin hose F is a tubular resin hose body 10 provided inside, a flame-proof rubber protector 20 concentrically arranged outside the hose body 10, and a member integrally formed with the protector 20. Joint part 3
It consists of 0 and.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

The protector-equipped hose of Reference Example 1 has the hose body 10 in which the folded-back portion 38 of the engaging portion 30 is folded back.
Since the folded-back portion 38 is interposed between the end portion 12 of the hose body 10 and the nipple 50 when the nipple 50 is fitted, it is possible to seal the connection portion between the two by overlapping the inside of the end portion 12 of the hose body 10. Sex is secured. Therefore, unlike the conventional case, a rubber cap for ensuring the sealing property is not required at the connecting portion between the hose body 10 and the nipple 50, a mold for forming the rubber cap is not required, and the rubber cap is molded and fitted. The process becomes unnecessary.
Therefore, a hose with a protector having excellent gasoline permeation resistance and flame resistance can be provided at low cost. [ Reference Example 2] In the hose with a protector of Reference Example 2,
A protector 20 having an engaging portion 30 shown in FIG. 3A was prepared. This one is different only in that it has a protector 20 having an engaging portion 30 of Reference Example 1 and a ring groove 36 that makes one round in the circumferential direction on the inner peripheral surface side of a connecting portion 35 of the engaging portion 30. The parts and materials are the same.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

In this protector-equipped hose of Reference Example 2,
The ring 13 of the hose body 10 restricts the relative movement of the folded portion 38 and the end 12 of the hose body 10 in the axial direction. Therefore, when the nipple is inserted and fixed, the folded-back portion 38 is restrained from moving relative to the end portion 12 of the hose body 10 in the axial direction. By forming a convex ring that fits into the concave groove of the ring 13 on the outer peripheral surface of the tip of the nipple to be inserted and fixed, the nipple can be inserted and fitted more reliably. Further, since the insertion resistance becomes high immediately before the insertion and fitting of the nipple and the insertion resistance becomes low at the time of fitting, there is an advantage that the insertion and fitting of the nipple can be easily known. Reference Example 3 Next, the hose with a protector of Reference Example 3 will be described with reference to FIG. In the protector-equipped hose of Reference Example 3, the thickness of the folded-back portion 38 of the engaging portion 30 is made thicker than the thickness of the connecting portion 35. As described above, the folded-back portion 3 is deformed when the nipple is inserted.
Since the thickness of 8 is thicker, when the nipple 50 is inserted into the hose with a protector, it is easier to absorb the diameter expansion deformation due to the nipple by the folded-back portion 38, and the nipple 50 can be easily inserted. Reference Example 4 Next, the hose with a protector of Reference Example 4 will be described with reference to FIG. In this reference example, the outer diameter rA of the folded portion 38 of the engaging portion 30 is smaller than the inner diameter rB of the connecting portion 35. Accordingly, when the folded-back portion 38 is folded back to the inner surface of the end portion 12 of the hose body 10, it is possible to prevent slack and wrinkles from easily occurring in the overlapping portion of the folded-back portion 38 with the end portion 12 of the hose body portion 10. As a result, the close contact between the folded-back portion 38, the inside of the end portion 12 of the hose body 10 and the nipple 50 can be improved, and the sealability of the hose with a protector can be improved. Reference Example 5 Next, the hose with a protector of Reference Example 5 will be described with reference to FIG. In this hose with protector, as shown in FIG. 6A, the thickness of the boundary portion 37 between the folded-back portion 38 of the engaging portion 30 of the hose with protector and the connecting portion 35 is made thinner than the thickness of other portions. It is in. As a result, when the folding part 38 is folded,
Since the bent portion is thin, it is possible to suppress the rise of this portion and the opening of the hose with a protector is not narrowed, so that the nipple 50 can be easily inserted into the hose. The thin portion is shown in FIGS.
As shown in (d), it may be provided on the folded portion 38 side. In particular, as shown in FIGS. 6 (c) and 6 (d),
When the recess is provided on the outer side, when the folded-back portion 38 is folded back, the opening portion of the engagement portion 30 becomes a funnel-shaped tapered opening portion whose inner diameter expands toward the opening end, so that the nipple 50 is engaged. It can be easily inserted into 30. Reference Example 6 Next, the hose with a protector of Reference Example 6 will be described with reference to FIG. The protector-equipped hose of Reference Example 6 includes a connecting portion 35 of the engaging portion 30 of the protector-equipped hose.
A ring groove 36 that makes one round in the circumferential direction is formed on the inner peripheral surface side of the hose, and a ring-shaped convex strip 39 that is symmetrical to the ring groove 36 is formed on the inner peripheral surface of the folded portion 38. The portion of the end portion 12 that comes into contact with the ring groove 36 is convex on the outer peripheral surface side, and the inner peripheral surface side forms the concave ring 13 which has a diameter and extends in the circumferential direction.
The ring 13 having the expanded diameter is fitted and fixed to the ring 13, and the folded-back portion 3 is inserted into the concave ring groove on the inner peripheral surface side of the ring 13.
The ring-shaped ridge 39 of No. 8 is fitted.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

In this protector-equipped hose of Reference Example 6,
Like the hose with a protector of Reference Example 2, the hose body 10
The ring 13 restricts the relative movement of the folded portion 38 and the end 12 of the hose body 10 in the axial direction. Therefore, when the nipple is inserted and fixed, the folded-back portion 38 is restrained from moving relative to the end portion 12 of the hose body 10 in the axial direction. In addition, the nipple 50 to be inserted and fixed
By forming the convex ring 51 that fits into the concave groove of the ring 13 on the outer peripheral surface of the tip end of the, the insertion and fitting of the nipple 50 becomes more reliable. Further, since the insertion resistance becomes high immediately before the insertion and fitting of the nipple 50 and the insertion resistance becomes low at the time of fitting, there is an advantage that the insertion and fitting of the nipple 50 can be easily known.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

In the protector-equipped hose of this reference example, after the nipple 50 is inserted and fitted into the engaging portion 30, the engaging portion 30 is inserted.
A band-shaped tightening member 55 is attached to the outer peripheral surface of the, and the engaging portion 30 is tightened in the nipple 50 in the axial direction to make the engagement between the nipple 50 and the engaging portion 30 stronger. Reference Example 7 Next, the hose with a protector of Reference Example 7 will be described with reference to FIG. The hose with a protector of this reference example has a boundary portion 3 between the folded portion 38 and the connecting portion 35.
The inclination 37a is provided on the inner side surface of 7. Accordingly, when the folded-back portion 38 is folded back, the inclined portion 37a of the folded-back portion is provided on the inner peripheral surface side from the outer end portion to the inside of the hose with protector, so that the nipple 50 can be easily inserted into the hose with protector. it can. Reference Example 8 Next, the hose with a protector of Reference Example 8 will be described with reference to FIG. As shown in FIGS. 9 (a) and 9 (b), the protector hose of Reference Example 8 has a ring extending perpendicularly to the lengthwise direction of the folded-back portion 38 on at least one of the inner side surface and the outer side surface of the folded-back portion 38. Shaped protrusion 38
a and 38b are provided. Thereby, the protrusion 3
Since 8a and 38b have the same function as the O-ring, it is possible to improve the sealing performance of the hose with a protector.
When the protrusion 38a is provided on the inner side, the nipple 50 is inserted into the hose with a protector and then the nipple 50 is inserted.
When the pull-out force is applied to the fold-back portion 38, it is difficult for the folded-back portion 38 to be turned over, so that the nipple 50 can be prevented from being pulled out together with the turned-up portion 38. Further, when the protrusion 38b is provided on the outside, the opening area can be increased at the outer end of the protector-equipped hose, so that the nipple 50 can be easily inserted into the protector-equipped hose.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

The shapes of the protrusions 38a and 38b are not limited to the semi-circular shape, but may be, for example, FIGS. 9 (c) and 9 (d).
As shown in FIG. 5, the sawtooth shapes 38c and 38d may be used. Further, although not shown, the protrusions may be provided on both the inner side surface and the outer side surface. Reference Example 9 Next, the hose with a protector of Reference Example 9 will be described with reference to FIG. As shown in FIG. 10 (a), the protector-provided hose of Reference Example 9 includes a folded portion 38.
A ring-shaped protrusion 38a is provided on the inner side surface of the connecting portion 35 perpendicularly to the lengthwise direction of the folded-back portion 38, and a ring-shaped groove 35a fitted to the ring-shaped protrusion 38a is provided on the inner side surface of the connecting portion 35. It is in. The ring-shaped ridge 38a has the ring-shaped groove 3
When the force for pulling out the nipple 50 is applied after the nipple 50 is inserted into the hose with the protector by being fitted into the ring 5a, the ring-shaped protrusion 38a and the ring-shaped groove 35 are formed.
Due to the coupling action with a, the folded-back portion 38 is surely prevented from being turned over. As shown in FIG. 10B, a ring-shaped ridge 38a may be provided at the tip of the folded-back portion 38, and when the folded-back portion 38 is folded back to the connecting portion 35, it is joined to the ring-shaped projected ridge 38a. Thus, the ring-shaped groove 35a may be provided. Further, as shown in FIG. 10C, a ring-shaped ridge 14 may be provided on the end 12 of the hose body 10 and fitted into a ring-shaped groove 38 e provided at the tip of the folded-back portion 38. Reference Example 10 Next, the protector-equipped hose of Reference Example 10 will be described with reference to FIG. As shown in FIG. 11A, the protector-equipped hose of Reference Example 10 has the end portion 12 of the hose body 10 disposed up to an intermediate portion of the connecting portion 35 of the engaging portion 30. As a result, the folding portion 3
By bending 8 the part of the folded-back portion 38 directly overlaps the connecting portion 38 at the portion beyond the end 12 of the hose-body 10. This overlapping portion W is highly flexible because it is formed only of rubber that does not allow the end 12 of the hard hose body 10 to enter. Therefore, the nipple 5
0 can be easily inserted into the engaging portion 30. Also,
The gasoline permeation resistance of the engaging portion 30 is ensured by the overlapping portion of the folded-back portion 38 with the end portion 12 of the hose body 10. In addition, as shown in FIG.
8 and the recess 12 in the connecting portion 35 that does not overlap the end portion 12
By providing the convex portion 38f and the convex portion 38f and engaging them with each other, when the pulling force acts on the nipple 50, the folded portion 38f
It is possible to prevent the nipple 50 from being pulled out and the nipple 50 being pulled out. Reference Example 11 Next, Reference Example 11 will be described with reference to FIG. In Reference Example 11, as shown in FIG. 12A, the hose body 10 has a two-layer structure. That is, the inner side of the hose body 10 is constituted by the layer 10b having high gasoline permeation resistance, and the outer side is constituted by the layer 10c having good adhesion.
It is composed by. The layer 10c having good adhesiveness can be obtained by applying an adhesive or by subjecting the outer surface of the layer 10b having high gasoline permeation resistance to a surface treatment such as sodium etching treatment, plasma flame treatment, or sputtering treatment. To be In this way, the hose body 1
The hose body 10 can be directly bonded to the engaging portion 30 and the protector 20 by forming the layer 10c having good adhesiveness on the outside of 0. For this reason, when the hose body 10 is thin, it is possible to avoid a so-called shelved state in which the hose body 10 is recessed inward even if the inside of the hose is in a negative pressure state. Thereby, the selection range of the wall thickness of the hose body 10 can be expanded.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

Further, as shown in FIG. 12 (b), for example, the inside of the hose body 10 may be constituted by a hard layer 10b having high gasoline permeation resistance, and the outside may be provided with a soft and flexible layer 10c. it can. And, a layer 10b that is hard and has high gasoline permeation resistance in the inner layer other than the end portion 12
To increase the strength of the hose body 10 and increase the thickness of the end 1
With respect to No. 2, the nipple 50 can be easily inserted by making the outer layer having good flexibility 10c thick. [Embodiment 1 ] Next, the hose with a protector of Embodiment 1 will be described with reference to FIG. In the hose with a protector of Example 1, a heat-resistant layer is provided by providing a space between the hose body 10 and the protector 20 excluding the end 12. In the hose with a protector according to the first embodiment, the hose body 10 is preformed separately from the engaging portion 30 and the protector 20, and the hose body 10 already formed afterwards is assembled to the engaging portion 30 and the protector 20. It is manufactured by sandwiching and fixing the end portion 12 of the main body 10 between the connecting portion 35 and the folded portion 38 of the engaging portion 30.

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0041

[Correction method] Change

[Correction content]

[0041] In the protector hose with Reference Example 1 to Reference Example 11, it is assumed in the structure without the space between the hose body 10 and the protector 20, as a protector hose with Example 1, A space may be provided between the hose body 10 and the protector 20. Further, the hose body 10 and the protector 20 may have bellows shapes with different pitches. Thereby, even if the hose body 10 is formed of hard resin, metal resin, or the like, the flexibility of the hose with a protector obtained can be ensured. Regarding the lengthwise deviation of the protector 20 and the hose body 10, by fixing the end 12 of the hose body 10 with the engaging portion 30, the hose body 10 and the protector 20 can be prevented from being misaligned.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction content]

In each of the above reference examples, the engaging portion 3
Although the end portion 12 of the hose body 10 is only sandwiched and fixed at 0, the engaging portion 30 and the end portion 12 of the hose body 10 may be bonded. As a result, when a pulling force acts on the nipple 50, it is possible to prevent the fold 50 of the engaging portion 30 from being turned over and the nipple 50 from being pulled out.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction content]

In each of the above reference examples, the wall thickness of the hose body 10 is the same between the bellows-shaped portion 11 and the end portion 12, but the end portion 12 should be thinner than the middle portion. You can also This enhances the flexibility of the engaging portion 30 at the end of the hose into which the nipple 50 is inserted. Therefore, the nipple 50 can be easily inserted into the hose. Since the bellows-shaped portion 11 in the middle portion has a normal wall thickness, the gasoline permeation resistance of the hose is not impaired.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0044

[Correction method] Change

[Correction content]

In each of the above reference examples, a polyamide resin is used as the hose body 10. However, instead of the polyamide resin, a fluorine-based, polyester-based, polyvinyl chloride-based, polyacetal-based, PPS-based gasoline resistant material,
A resin having excellent gasoline permeation resistance or a metal such as stainless steel or aluminum may be used. [ Second Embodiment] A hose with a protector of a second embodiment will be described with reference to FIG. In this hose with protector,
The hose body 10 shown in (a) is used. The hose body 10 is made of polyamide resin like the hose with a protector of the first embodiment, and is preliminarily adjusted by blow molding. The engaging portion 30 and the protector 20 are integrally molded with rubber as shown in FIG. 14 (b). In this embodiment, the engaging portion 30 on the right side of the drawing is formed with the folded-back portion 38 previously folded. The engaging portion 30 on the left side of the drawing is formed so as to extend in the axial direction. In addition, a ring-shaped groove 35g is formed in the connecting portion 35 of the engaging portion 30, and a ring-shaped protrusion 35f is formed in the folded portion 38 at a position corresponding to the ring-shaped groove 35g, and the folded portion 38 is folded. Then, the engaging portion 30 on the right side of the drawing
A ring-shaped deep groove having an enlarged portion is formed as shown in FIG.

[Procedure Amendment 19]

[Document name to be amended] Statement

[Correction target item name] 0046

[Correction method] Change

[Correction content]

In the present embodiment, the folded-back portion 3 of the engaging portion 30.
Since 8 is folded in advance, the work efficiency is increased as it is not necessary to fold the portion. If the hose body 10 can be attached to the engaging portion 30 later, the engaging portions 30 at both ends can be molded in a state of being folded in advance. [Embodiment 3 ] A hose with a protector of Embodiment 3 is shown in FIG. In this hose with protector, the protector 20
A portion 29 having a small inner circumferential diameter that protrudes in a ring shape toward the axial center is formed at the boundary portion between the engaging portion 30 and the engaging portion 30, and also at the boundary portion between the bellows-shaped portion 11 and the end portion 12 of the hose body 10. A ring groove 19 which is recessed in the shaft core side and is fitted into the ring-shaped protruding portion 29 is formed and fitted. As a result, the protector 20 having the engaging portion 30 and the hose body 10 are more reliably integrated, and the hose body 1
0 is less likely to fall off the engaging portion 30.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction content]

In the protector-equipped hose of this embodiment, a band-type tightening tool 55 is used to fasten the engaging portion 30 to the nipple 50, and the engaging portion 30 is urged in the axial direction from the outer peripheral side of the engaging portion 30. The nipple 50 is strongly sandwiched between it and the outer peripheral surface. [Embodiment 4 ] A hose with a protector of Embodiment 4 is shown in FIG. This hose with a protector is obtained by shortening the end 12 of the hose body 10 used in the hose with a protector of the third embodiment. It is supposed to be put inside. Since the hard hose body 10 does not enter most of the engaging portion 30 in the axial direction, the nipple 50 can be easily inserted. Further, since the tip portion of the folded portion 38 of the engaging portion 30 is sandwiched between the end portion 12 of the hose body 10 and the expanded diameter portion 51 of the nipple 50, that portion exerts a sealing function. Therefore, the sealing property is also excellent. [Embodiment 5 ] This hose with a protector is shown in FIG.
This hose with a protector comprises a hose body 10 made of polyamide resin and a protector 20 having an engagement portion 30 made of rubber, which are separately made.

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction content]

In the protector-equipped hose of this embodiment, since the trumpet-shaped end portion 125 of the hose body 10 is short in the axial direction, it is easy to mount the engaging portion 30 in the trumpet-shaped bottomed groove 305 and is excellent in assembling. ing. In addition, the engaging portion 30 and the hose body 10
The end portion 12 is fitted into the expanded diameter portion, the small diameter portion, and the expanded diameter portion that are continuous in the axial direction, so that the integration is high. Further, since the ring-shaped lip 306 functions as a seal, the sealing property is good. [Embodiment 6 ] FIG. 1 is a sectional view showing the main part of this hose with a protector.
8 shows. In this hose with a protector, the shape of the end portion 12 of the hose body 10 of the hose with a protector of the fifth embodiment and the shape of the inner peripheral surface of the engaging portion 30 are slightly changed. That is, the trumpet-shaped end 12 of the end 12 of the hose body 10.
5 is widened between the second enlarged diameter portion 304 having a semicircular cross section. As a result, the end 12 of the hose body 10
The trumpet-shaped end portion 125 of the clamp 5 together with the engaging portion 30
It is structured so as to be sandwiched between the nipple 50 and the nipple 50.

[Procedure correction 22]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction content]

In the protector-equipped hose of this embodiment, the end portion 12 of the hose body 10 is clamped by the clamp 55.
Since it is sandwiched between the nipple 50 and the hose body 1,
The bond with 0 becomes strong. [Embodiment 7 ] FIG. 1 is a sectional view showing the main part of this hose with a protector.
9 shows. This hose with a protector is provided with an enlarged diameter portion 13 in the middle of the end portion 12 in the axial direction.
A ring-shaped stopper 381 protruding in the axial direction is provided at the tip of the folded-back portion 38.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0053

[Correction method] Change

[Correction content]

Expanded portion 1 of end 12 of this hose body 10
3 has a positional relationship corresponding to the expanded diameter portion 51 of the nipple 50 to be mounted. The expanded diameter portion 51 of the nipple 50 is fitted and locked to the expanded diameter portion 13 of the end portion 12, and the tip of the nipple 50 is a ring. The stopper 381 is abutted and locked. This facilitates fitting and locking of the nipple 50. [Embodiment 8 ] FIG. 2 is a sectional view showing the main part of this hose with a protector.
It shows in 0. This hose with a protector has a plurality of through holes 121 arranged in a ring shape in the circumferential direction at the tip of the end 12 of the hose body 10. The connecting portion 35 of the engaging portion 30 has a recess 351 at a position corresponding to the through hole 121 of the end portion 12, and the through hole 121 of the folding portion 38.
A convex portion 382 that fits into the concave portion 351 is formed at a position corresponding to. These convex portions 382 are the folded portions 3
When 8 is folded back, it penetrates through hole 121 and is fitted and locked in recess 351 of connecting portion 35. These convex portions 382
The folded-back portion 38 is integrally connected by the connecting portion 35 by fitting and locking the recessed portion 351 with. This prevents the folded-back portion 38 from being pulled out from the connecting portion 35 when the nipple is pulled out .

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] 0054

[Correction method] Change

[Correction content]

[Embodiment 9] This hose with a protector is shown in FIG.
21 . This protector-equipped hose is characterized in that the protector 20 is formed of two parts that are in a fitting relationship such that they can move relative to each other in the axial direction. That is, the protector 20 includes a first protector 23 having a small outer peripheral diameter and a second protector 24 having a large inner peripheral diameter that coaxially covers the first protector 23.
It consists of and. The first protector 23 and the second protector 24 have a telescope relationship, and the axially overlapping portions of the two can be expanded. Engagement part 3
0 is the first protector 23 and the second protector 24, respectively.
Is integrally formed at the end of the.

[Procedure correction 25]

[Document name to be amended] Statement

[Correction target item name] 0055

[Correction method] Change

[Correction content]

[0055] The hose with a protector, as shown in FIG. 21 (b)
As shown in, the first protector 23, the second protector 2
4 and the hose body 10 are individually manufactured, and the ends 12 of the hose body 10 are respectively attached to the first protector 23,
It can be assembled by mounting it in the ring groove of the engaging portion 30 formed integrally with the second protector 24.
Since the pair of engaging portions 30, 30 are formed as separate parts, each end portion 12 of the hose body 10 is connected to the corresponding engaging portion 3.
Since it can be inserted into the ring grooves of 0 and 30, the insertion work becomes extremely easy.

[Procedure Amendment 26]

[Document name to be amended] Statement

[Correction target item name] 0056

[Correction method] Change

[Correction content]

As shown in FIG. 21 (c), the protector 20 of the present embodiment is highly flexible because the protector 20 can be expanded and contracted in the axial direction. In addition, since it is less necessary to form the protector 20 in a bellows shape, the die cost is low. Further, the same protector can be used for a plurality of protector-equipped hoses having different axial lengths of the hose body 10 .

[Procedure Amendment 27]

[Document name to be amended] Statement

[Name of item to be corrected] 0057

[Correction method] Delete

[Procedure correction 28]

[Document name to be amended] Statement

[Name of item to be corrected] 0058

[Correction method] Delete

[Procedure correction 29]

[Document name to be amended] Statement

[Correction target item name] 0059

[Correction method] Delete

[Procedure amendment 30]

[Document name to be amended] Statement

[Correction target item name] 0060

[Correction method] Delete

[Procedure correction 31]

[Document name to be amended] Statement

[Correction target item name] 0061

[Correction method] Delete

[Procedure correction 32]

[Document name to be amended] Statement

[Correction target item name] 0062

[Correction method] Delete

[Procedure amendment 33]

[Document name to be amended] Statement

[Correction target item name] 0063

[Correction method] Delete

[Procedure amendment 34]

[Document name to be amended] Statement

[Correction target item name] 0064

[Correction method] Delete

[Procedure amendment 35]

[Document name to be amended] Statement

[Correction target item name] 0065

[Correction method] Delete

[Procedure correction 36]

[Document name to be amended] Statement

[Correction target item name] 0066

[Correction method] Delete

[Procedure amendment 37]

[Document name to be amended] Statement

[Correction target item name] 0067

[Correction method] Delete

[Procedure amendment 38]

[Document name to be amended] Statement

[Correction target item name] 0068

[Correction method] Delete

[Procedure amendment 39]

[Document name to be amended] Statement

[Correction target item name] 0069

[Correction method] Delete

[Procedure amendment 40]

[Document name to be amended] Statement

[Name of item to be corrected] 0070

[Correction method] Delete

[Procedure Amendment 41]

[Document name to be amended] Statement

[Correction target item name] 0071

[Correction method] Delete

[Procedure amendment 42]

[Document name to be amended] Statement

[Name of item to be corrected] 0072

[Correction method] Delete

[Procedure amendment 43]

[Document name to be amended] Statement

[Correction target item name] 0073

[Correction method] Delete

[Procedure correction 44]

[Document name to be amended] Statement

[Correction target item name] 0074

[Correction method] Delete

[Procedure amendment 45]

[Document name to be amended] Statement

[Correction target item name] 0075

[Correction method] Delete

[Procedure correction 46]

[Document name to be amended] Statement

[Correction target item name] 0076

[Correction method] Delete

[Procedure amendment 47]

[Document name to be amended] Statement

[Correction target item name] 0077

[Correction method] Delete

[Procedure correction 48]

[Document name to be amended] Statement

[Correction target item name] 0078

[Correction method] Delete

[Procedure correction 49]

[Document name to be amended] Statement

[Correction target item name] 0079

[Correction method] Delete

[Procedure amendment 50]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Delete

[Procedure correction 51]

[Document name to be amended] Statement

[Correction target item name] 0081

[Correction method] Delete

[Procedure amendment 52]

[Document name to be amended] Statement

[Correction target item name] 0082

[Correction method] Change

[Correction content]

[Embodiment 10] FIG. 22 shows Embodiment 1 of the present invention.
0 shows a hose with a protector. In this example, the protector 20 and the cylindrical ends 12, 1 of the hose body 10 are
A part of the axial direction 2 of the protector 20 is formed in a convex shape that protrudes outward in the radial direction in an annular shape.
Radial inwardly facing annular engagement recess 20 formed at 06
A convex curved portion (engagement convex portion) 127 of the end portion 12 of the hose body 10 is fitted inside the hose 7.

[Procedure amendment 53]

[Document name to be amended] Statement

[Correction target item name] 0086

[Correction method] Change

[Correction content]

[0086]

In the hose with protector of the present invention, since the engaging portion is integrally formed, it can be easily joined to another device such as a nipple. Furthermore, since the engaging portion integrally fixes the hose body and the protector, the hose body and the protector are highly integrated. Further, the hose with a protector of the present invention is most suitable as a hose used for transportation of gasoline, kerosene, chemical agents and the like. E with protector of the present invention
The space between the protector and the hose body
Due to this, the two tend to shift in the longitudinal direction, but the hose
The end of the main body is clamped and fixed by the connecting part of the engaging part and the folded part
Therefore, the position of the hose body is fixed. Well
In the vicinity of the boundary between the protector and the engaging part,
The hose body has a small inner diameter that protrudes like a hook.
Near the boundary between the hose and the end of the hose body
Protector by having a ring groove that fits
And the hose body are more securely integrated, and the hose body
It is less likely to fall out of the engaging part.

[Procedure Amendment 54]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a hose with a protector according to a first reference example of the present invention.

FIG. 2 is a cross-sectional view schematically showing the manufacturing process of the hose with a protector of Reference Example 1.

FIG. 3 is a sectional view schematically showing a main part of a hose with a protector of Reference Example 2.

FIG. 4 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 3 before and after folding back.

FIG. 5 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 4 before and after folding back.

FIG. 6 is a partially enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 5.

FIG. 7 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 6 before and after folding back.

FIG. 8 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 7 before and after folding back.

FIG. 9 is a partial enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 8.

FIG. 10 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 9 before and after folding back.

FIG. 11 is a partial enlarged cross-sectional view showing before and after folding back of a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 10.

FIG. 12 is a partially enlarged cross-sectional view showing a connecting portion and a folding portion that constitute an engaging portion of a hose with a protector of Reference Example 11 before and after folding back.

FIG. 13 is a partially cutaway sectional view of the hose with a protector according to the first embodiment.

FIG. 14 is a cross sectional view schematically showing a manufacturing process of a hose with a protector according to a second embodiment.

FIG. 15 is a partially cutaway sectional view of a hose with a protector according to a third embodiment.

FIG. 16 is a partially cutaway sectional view of a hose with a protector according to a fourth embodiment.

FIG. 17 is a partially cutaway sectional view of a hose with a protector according to a fifth embodiment.

FIG. 18 is a partially enlarged cross-sectional view showing an engaging portion and a hose body end portion of a hose with a protector according to a sixth embodiment.

FIG. 19 is a partially enlarged cross-sectional view showing an engaging portion and a hose body end portion of a hose with a protector according to a seventh embodiment.

FIG. 20 is a partially enlarged cross-sectional view showing an engaging portion and a hose body end portion of a hose with a protector according to an eighth embodiment.

FIG. 21 is a partial breakage of the hose with a protector of Example 9 .
A cross section, a partial cross section, and an external appearance are shown schematically.

22 is a partial breakage of the hose with a protector of Example 10. FIG.
It is a sectional view.

[Procedure Amendment 55]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 21

[Correction method] Change

[Correction content]

FIG. 21

[Procedure Amendment 56]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 22

[Correction method] Change

[Correction content]

FIG. 22

[Procedure amendment 57]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 23

[Correction method] Delete

[Procedure correction 58]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 24

[Correction method] Delete

[Procedure correction 59]

[Document name to be corrected] Drawing

[Correction target item name] Fig. 25

[Correction method] Delete

[Procedure Amendment 60]

[Document name to be corrected] Drawing

[Correction target item name]

[Correction method] Delete

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tsutomu Kodama             Tokai Rubber Works, Higashi 3-chome, Komaki City, Aichi Prefecture             Business F-term (reference) 3H024 AA04 AB06 AC05                 3H111 AA02 BA12 BA15 CA16 CA42                       CA47 CB28 DA11 DB08

Claims (20)

[Claims] 1. A tubular hose body, a tubular protector that is coaxially arranged in a state of covering the outer peripheral surface of the hose body, and the hose body and the protector are integrally formed at both ends thereof. A hose with a protector, comprising: a tubular engaging portion that is joined to the base and forms a nipple insertion opening into which the nipple is inserted and coupled. 2. The hose with a protector according to claim 1, wherein the hose body is made of resin, metal, or a composite material thereof, and the protector is made of a rubber elastic body. 3. The hose with a protector according to claim 2, wherein the rubber elastic body is a crosslinked rubber. 4. The protector according to claim 1, wherein the protector and the engaging portion are integrally formed of a rubber elastic body, and an end portion of the hose body is coaxially embedded and retained in the engaging portion. hose. 5. The hose with a protector according to claim 4, wherein the hose body is made of resin. 6. The hose with a protector according to claim 5, wherein the end portion of the hose body, which is embedded and held in the engaging portion, has a wavy shape that becomes uneven in the circumferential direction and is expandable. 7. The hose with a protector according to claim 5, wherein an end portion of the hose body embedded and held in the engagement portion has a ring that is concave or convex when viewed from the inner peripheral surface side that makes one round in the circumferential direction. 8. The concave or convex ring of the hose body has at least one of an inner peripheral surface and an outer peripheral surface covered by the engaging portion and locked in a symmetrical manner with respect to each other. Hose with protector. 9. The position where the concave or convex ring of the hose body engages with the convex or concave engaging ring that goes around the outer peripheral surface of the tip portion of the nipple inserted and held in the engaging portion. The hose with protector according to claim 7, wherein the concave or convex ring of the hose body is directly or indirectly fitted and locked to the convex or concave engaging ring of the nipple. 10. The engagement portion has a ring-shaped seal portion that goes around an inner peripheral surface of the engagement portion, and the seal portion is inserted and retained in the concave or convex ring of the hose body and the engagement portion. Clamped between the engaging ring of the nipple,
The hose with a protector according to claim 9, which seals the seal body and the nipple. 11. The engagement portion has a portion on the inner peripheral surface side formed integrally with a portion on the outer peripheral surface side in a cylindrical shape, and a portion on the inner peripheral surface side is defined as the outer peripheral surface side. The hose with a protector according to claim 5, wherein the hose is formed by coaxially folding the inside of the hose. 12. A protrusion is provided on one of the contact surfaces of the outer peripheral surface side and the inner peripheral surface side of the engaging portion, and the other is provided with a concave portion that fits with the convex portion. Claim 1
Hose with protector described in 1. 13. The end portion of the hose body has a ring that is concave or convex when viewed from the inner peripheral surface side that makes one round in the circumferential direction,
A portion on the inner peripheral surface side of the engaging portion that holds the end portion of the hose body from the inside has a convex or concave ring that fits and locks with the ring of the hose body in a symmetrical manner. Item 12. A hose with a protector according to item 11. 14. The engagement portion is coaxially provided on the center side of the protector integrally formed, is opened at a rear end surface of the engagement portion in the axial direction, and is opened at one end opening toward the insertion opening side. The hose with a protector according to claim 5, wherein the hose has a bottomed ring groove, and an end portion of the hose body is inserted and locked in the bottomed ring groove. 15. The hose main body of the hose body, wherein the engagement portion has a ring-shaped lip coaxially provided on the center side of the protector integrally formed in the center side of the engagement portion and the inner side of the engagement portion is the distal end. The hose with a protector according to claim 5, wherein the end portion is coaxially held on the centrifugal direction side of the lip. 16. The engagement portion has an abutting surface on its inner peripheral surface that is symmetrical with the outer peripheral surface of the end portion of the hose body, and the outer peripheral surface of the end portion of the hose body is a corresponding contact surface. The hose with a protector according to claim 5, wherein the hose is in contact with and integrated with the hose. 17. An outer ring for coaxially fastening the outer peripheral surface in a ring shape to an outer peripheral surface of the engaging portion, and an end portion of the hose body which is abutted and integrated with the outer engaging portion. 17. The hose with a protector according to claim 16, wherein the inner peripheral surface of the hose has a ring-shaped inner ring that coaxially supports the inner peripheral surface. 18. A portion of the outer peripheral surface of the engaging portion on the inner side in the axial direction is abutted and integrated with an inner peripheral surface of an end portion of the protector, and a portion of the inner peripheral surface of the engaging portion on the inner side in the axial direction. The hose with a protector according to claim 1, wherein the hose is abuttingly integrated with the outer peripheral surface of the end portion of the hose body. 19. An outer ring that coaxially fastens the outer peripheral surface in a ring shape to the outer peripheral surface of the protector that is in contact with and integrated with the engaging portion, and is in contact with the engaging portion. 19. The hose with a protector according to claim 18, wherein an inner ring-shaped inner ring that coaxially supports the inner peripheral surface is coaxially formed on the inner peripheral surface of the end of the hose body that is integrally formed. 20. The protector comprises a pair of parts, one end of one part is coaxially fitted to one end of the other part, and is relatively movable in the axial direction. Hose with protector.