JPH0651684U - Resin hose with fitting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a resin hose with a joint that does not need to form a confirmation mark on the resin hose and does not need to turn over the end of the protector to confirm the press-fitted state. [Structure] A joint 11 is connected to at least one end of a resin hose 1, and the joint 11 is a hose including a tree-shaped nipple 14 formed in a base portion of a joint body 13 and a collar 3 surrounding the nipple 14. A resin hose with a joint, which has a connecting portion 15. The resin hose 1 is press-fitted into the annular space formed by the nipple 14 and the collar 3, and the protector 5 is externally fitted to the resin hose 1 by being overlapped with the tip of the collar 3. At least one peep hole 4 for confirming the press fit of the hose is formed at the base of the collar 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a resin hose with a joint. In particular, it is suitable for fuel lines for automobiles.

[0002]

[Prior art]

 Here, a resin hose with a joint having joints connected to both ends as shown in FIG. 1 will be described as an example, but the same applies to a type in which a joint is connected to at least one end.

When the joints 11 are connected to both ends of the resin hose 1 such as a nylon hose, it is usually performed as described below.

The resin hose 1 is cut into a predetermined length, and the resin hose 1 is cut into a predetermined length into a collar 3 / protector 5 assembly in which the tip of the collar 3 is inserted inside the end of the rubber protector 5. Insert to form collar 3 / protector 5 / hose 1 assembly. At this time, since the resin hose 1 is loosely fitted to both the collar 3 and the protector 5, the insertion work can be performed without any problem.

Then, the collar 3 / protector 5 / hose 1 assembly is gripped by a chuck 7 at the central portion, and joint bodies (unions) 13 coaxially arranged on both sides of the assembly are moved to the assembly side. To move. Then, the resin hose 1 is press-fitted into the annular space formed by the collar 3 and the nipple 15 formed in the joint body 13.

At this time, in order to confirm the press-fitting, conventionally, a confirmation mark 9 is formed from both ends of the resin hose 1 in the same dimension position as the collar 3 with white paint, and the press-fitting state is visually confirmed. It was

[0007]

[Problems to be solved by the device]

 However, it has been found that the above-mentioned conventional resin hose with a joint has the following problems.

(1) It is necessary to previously form the confirmation mark on the resin hose with white paint.

(2) Since the confirmation mark is hidden by the protector, it is necessary to turn over the end portion of the protector to confirm the press-fitted state.

In view of the above, an object of the present invention is to provide a resin hose with a joint that does not need to have a confirmation mark formed on the resin hose and that does not need to turn over the end of the protector to confirm the press-fitted state. To provide.

[0011]

[Means for Solving the Problems]

 The resin hose with a joint according to the present invention solves the above problem by the following configuration.

A joint is connected to at least one end of the resin hose, and the joint is provided with a hose tree-shaped nipple formed at the base of the joint body, and a hose connection portion including a collar surrounding the nipple portion. , The resin hose is press-fitted into the annular space formed by the nipple and the collar, and the protector is fitted on the resin hose by overlapping with the tip of the collar. At least one peep hole for confirming the press fit of the hose is formed.

[0013]

【Example】

 Next, the present invention will be described in detail based on examples. The same parts as those of the conventional example are designated by the same reference numerals, and the description thereof will be omitted in whole or part.

(1) As shown in FIG. 1, the hose with a joint of this embodiment has the following constitution common to the above-mentioned conventional example.

Joints 11 are connected to both ends of the resin hose 1. The joint 11 is provided with a hose connection portion 15 including a tree-shaped nipple 14 formed at the base of the joint body 13 and a collar 3 surrounding the nipple 14.

Here, the joint body 13 has a structure in which the female screw portion 13a is formed, but the female body portion may be a male screw portion, or a one-touch connection portion incorporating a spring mechanism, which is optional. Is. The joint body 13 is usually manufactured by forging and cutting from an iron-based drawing material and surface-treated with zinc-based plating. Here, the protector 5 is usually made of synthetic rubber such as CR or EPDM.

In addition, the collar 3 has an inner flange portion 3a at the base end and a reinforcing rib 3b at the tip. The collar 3 is usually press-formed from a thin steel plate.

Then, the resin hose 1 is press-fitted into an annular space formed by the nipple 14 and the collar 3, and the protector 5 is externally fitted to the resin hose 1 by being overlapped with the tip portion of the collar 3.

(2) In the resin hose 1 with the joint 11 having the same structure as the conventional one, in this embodiment, at least one peep hole 4 for confirming the press fit of the hose 1 is provided at the base of the collar 3, Four are formed. The number of the peep holes 4 is arbitrary, such as two, three, and even six. The shape of the peep hole 4 may be an open ring as shown in FIGS. 1 and 2 or a closed ring as shown in FIG.

(3) Next, an assembling mode of the above embodiment will be described.

As in the conventional case, the collar 3 / protector 5 / hose 1 assembly is held by the chuck 7 at the central portion thereof, and the joint body 13 (union) is arranged coaxially with the assembly on both sides. Is moved to the assembly side. Then, the resin hose 1 is press-fitted into the annular space formed by the collar 3 and the nipple 14 formed in the joint body 13. Then, the press-fitted state is confirmed through the peephole 4. Therefore, unlike the conventional case, it is not necessary to form a confirmation mark on the resin hose 1, and it is not necessary to turn over the end portion of the protector 5 to confirm the press-fitted state of the hose.

The resin hose 1 with the joint 11 thus assembled is assembled to a fuel piping system or the like for use. At this time, the protector 5 protects the resin hose 1 from thermal influence and prevents interference with other parts. Further, the collar 3 ensures a pull-out load when the resin hose 1 swells with fuel oil (gasohol) or the like.

[0023]

[Operation and effect of the device]

 The resin hose with a joint according to the present invention has a joint connected to at least one end of the resin hose, and the joint comprises a tree-shaped nipple formed at the base of the joint body and a collar surrounding the nipple. With a hose connection part, the resin hose is press-fitted into the annular space formed by the nipple and the collar, and the resin hose is superposed on the protector by overlapping with the tip of the color. In the resin hose, at least one peep hole for confirming the press fit of the hose is formed at the base of the collar, so that the following operational effects are achieved.

It is possible to directly confirm the press-fitting state of the hose through the peep hole formed at the end portion of the collar. Therefore, unlike the prior art, (1) it is not necessary to previously form a confirmation mark on the resin hose with white paint, and it is not necessary to turn over the end of the protector in order to visually check the confirmation mark.

[Brief description of drawings]

FIG. 1 is an overall sectional view showing a conventional example of a resin hose with a joint to which the present invention is applied.

FIG. 2 is a cross-sectional view of main parts of the resin hose with a joint shown in FIG.

FIG. 3 is a cross-sectional view showing how the joint body is connected to the collar / protector / hose assembly.

FIG. 4 is a cross-sectional view of an essential part showing an example of a hose with a joint of the present invention.

5 is a perspective view of a collar used for the resin hose with a joint shown in FIG.

FIG. 6 is a perspective view showing another embodiment of the collar,

[Explanation of symbols]

 1 Resin Hose 3 Color 5 Protector 11 Joint 13 Joint Body 14 Nipple 15 Hose Connection

Claims (1)

[Scope of utility model registration request] 1. A joint is connected to at least one end of a resin hose, and the joint is provided with a hose connecting portion made of a Fastly type nipple formed at a base portion of a joint main body and a collar surrounding the nipple portion. Then, the resin hose is press-fitted into the annular space formed by the nipple and the collar, and further, in the resin hose with a joint, the protector is externally fitted to the resin hose by being polymerized with the tip of the collar, A resin hose with a joint, characterized in that at least one peep hole for confirming the press fit of the hose is formed in the base portion of the collar.