JPH0728284U - Hose structure - Google Patents

Abstract

(57) [Summary] [Purpose] A hose structure that has a predetermined bent shape and is lightweight and easy to manufacture. A pipe is formed into a predetermined bent shape, and a bent hose main body 1 is inserted into the pipe and projects from both ends of the pipe and extends along the shape of the pipe. [Effect] Since the pipe 2 is configured to hold the bent shape, the structure is lightweight and inexpensive.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hose structure used for a brake hose of an automobile.

[0002]

[Prior art]

 The brake hose of an automobile has a structure in which mounting brackets are fixed at both ends in order to improve the ease of assembly. However, if the both ends are simply assembled, the displacement of the intermediate part may be large and may interfere with the vehicle body and other parts. In addition, when assembling, it may be necessary to assemble while resisting the elastic force of the hose, and the workability of assembling is not necessarily good.

Therefore, Japanese Utility Model Publication No. 3-10473 discloses a brake hose having an intermediate joint fitting 200 having a predetermined bent shape at an intermediate portion between the hose 100 and the hose 101 as shown in FIG. There is. In this brake hose, two hoses 100 and 101 are inserted into sleeves 201 and 202 at both ends of the intermediate joint fitting 200, respectively, and are fastened by caulking to be integrated.

According to this brake hose, since the intermediate joint fitting 200 has a predetermined bent shape, the workability of assembling is excellent, and since there is almost no displacement of the intermediate portion, it is possible to avoid interference with other parts. it can.

[0005]

[Problems to be solved by the device]

 However, in the hose structure having the above-mentioned intermediate joint fitting, a pair of sleeves 201 and 202 must be formed and brazed, so that the man-hours of the intermediate joint fitting are large and there is a problem in terms of cost. Furthermore, the intermediate joint fitting is thick because it must not buckle or break. Therefore, it was heavy and was against the demand for weight reduction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hose structure which has a predetermined bent shape and is lightweight and easy to manufacture.

[0007]

[Means for Solving the Problems]

 The hose structure of the present invention which solves the above-mentioned problems comprises a pipe having a predetermined bent shape, and a bent hose which is inserted into the pipe and projects from both ends of the pipe to extend along the shape of the pipe. Characterize. To manufacture the hose structure of the present invention, first prepare a straight pipe and insert the hose into the pipe. The hose is easy to insert because the pipe is straight. Next, the pipe is bent into a predetermined bent shape. At this time, the hose also deforms together with the pipe, and becomes a bent shape that follows the shape of the pipe.

Although the pull-out resistance is sufficient as it is, the integrity is further improved by crimping the end portion of the pipe and firmly fastening it to the hose.

[0009]

[Action]

 In the hose structure of the present invention, the hose is inserted into the pipe and has a bent shape that follows the bent shape of the pipe. Therefore, by fixing the mouthpieces to both ends of the hose, it is possible to avoid the interference with other parts after the assembling because of excellent assembling property. Since the hose is pressed against the inner wall of the pipe by its own elastic force in the pipe, extremely high sliding resistance can be obtained. Therefore, it has excellent pullout resistance and prevents relative movement of the pipe and hose. Since the above characteristics can be obtained simply by inserting a hose into the pipe and bending the pipe, the wall thickness of the pipe can be set to the minimum thickness capable of maintaining the bent shape, for example, 0.7 to 1.5 mm. be able to. In addition, it does not require a sleeve or the like, making it extremely lightweight.

[0010]

【Example】

 Hereinafter, a specific description will be given with reference to examples. (Embodiment 1) FIGS. 1 and 2 show a hose structure according to an embodiment of the present invention. This hose structure is composed of a hose body 1, a bent pipe 2, a female joint 3 and an eyeball joint 4.

The hose body 1 is a rubber brake hose having a braided layer inside, and has a bent shape that is inserted into the pipe 2 and projects from both ends of the pipe 2. The pipe 2 is made of mild steel having a wall thickness of 0.7 mm, and is bent at an angle of 90 degrees so that both ends thereof are orthogonal to each other with a predetermined arm in the middle portion of the hose body. The hose body 1 is inserted into the pipe 2 as a whole, and the hose body 1 is bent along the bent shape of the pipe 2. Although the metal pipe 2 is used in this embodiment, a resin pipe may be used in some cases. In this case, the hose body can be arranged in a bent shape in the mold, and a bent pipe can be formed by molding.

The female joint 3 and the eyeball joint 4 are integrally fastened to the hose body 1 by crimping the ends of the hose body 1 respectively. In the hose structure of this embodiment, first, the hose body 2 is inserted into a straight pipe 2 which is not bent. Since the pipe 2 is linear, the insertion direction of the hose body 1 and the axial direction of the pipe 2 are the same, and the hose body 1 can be easily inserted.

Next, the pipe 2 is bent into a predetermined bent shape. At this time, the hose body 1 is also deformed along with the deformation of the pipe 2, and the elastic force against bending is stored. Therefore, in the hose structure of this embodiment, the hose body 1 is pressed against the inner wall of the pipe 2 by its own elastic force, and a high sliding resistance is generated between the hose body 1 and the pipe 2. As a result, relative movement between the hose body 1 and the pipe 2 is prevented, and a high pull-out resistance can be obtained, so that it can be put to practical use as it is. (Example 2) As shown in FIG. 3, the nipple 5 is inserted into the hose body 1, and the end of the pipe 2 is swaged at a position facing the nipple 5 to form a swaged portion 20. If so, the hose body 1 is firmly sandwiched between the swaged portion 20 and the nipple 5, and the integrity of the hose body 1 and the pipe 2 can be further improved.

That is, according to the hose structure of this embodiment, since the pipe 2 is thin and lightweight, it can be remarkably reduced in weight as compared with the conventional structure. Since it can be manufactured simply by inserting the hose body 1 into the pipe 2 and bending it, not only the material cost is low, but also the number of manufacturing steps is extremely small and the cost is extremely low. When the intermediate portion of this hose structure is held on the vehicle body or the like, it can be easily used as an intermediate joint by clamping the pipe 2 at an appropriate position or brazing the joint.

[0015]

[Effect of device]

 That is, according to the hose structure of the present invention, the pipe can be used as it is as a general pipe material, and the sleeve and its brazing process are unnecessary. Therefore, it can be manufactured extremely inexpensively. In addition, the pipe can be thin and the sleeve is not required, so it can be made extremely lightweight.

[Brief description of drawings]

FIG. 1 is a plan view of a hose structure according to an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part of a hose structure according to an embodiment of the present invention.

FIG. 3 is a sectional view of an essential part of a hose structure according to a second embodiment of the present invention.

FIG. 4 is a plan view of a conventional hose structure.

[Explanation of symbols]

1: Hose body 2: Pipe 3: Female joint 4: Eyeball joint 5: Nipple 20: Crimped part

Claims (1)

[Scope of utility model registration request] 1. A hose comprising: a pipe having a predetermined bent shape, and a bent hose which is inserted into the pipe and projects from both ends of the pipe to extend along the shape of the pipe. Construction.