JP2000108885A - Brake hose holding structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate manufacturing and to strongly hold a brake hose in a strut. SOLUTION: A brake hose holding structure for vehicle has a bracket 20, a hose metal fitting 10 and a hose metal fitting holding means. The bracket 20 has a flat plate part 21 projectingly provided in a strut 2, and a locking hole and a slit formed in the flat plate part 21. The hose metal fitting 10 has a roughly cylindrical body part 12 in the center part of the brake hose 1, a rotation preventing part 14 fitted in the locking hole formed in the body part 12 and a flange part 13 brought into surface-contact with the flat plate part 21 when the rotation preventing part 14 is fitted in the locking hole. The hose metal fitting holding means fits the rotation preventing part 14 in the locking hole, and holds the flange part 13 in the state of being press-contacted with the flat plate part 21. Thus, the large area of a abutting part pressed into contact with the flat plate part 21 is secured, and the hose metal fitting 10 is strongly fixed by the bracket 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake hose holding structure for a vehicle, and more particularly, to a brake hose holding structure for a vehicle in which a strut of a suspension holds an intermediate portion of the brake hose.

[0002]

2. Description of the Related Art In a general vehicle, a brake line for supplying oil pressure from a brake master cylinder to a wheel side brake device, for example, a wheel cylinder of a drum type brake, is provided in a tire house by a flexible brake hose. The cylinder side and the wheel cylinder are connected.

[0003] The brake hose has a slight flexure in consideration of the movement of the suspension and the movement of the steering of the wheels, and a part thereof is held by a strut of the suspension so as not to come into contact with the vehicle body or the wheels. I have.

FIG. 4 is a perspective view for explaining a first conventional brake hose holding structure for a vehicle. FIG. 5 is an enlarged side view showing a main part in an assembled state of FIG. FIG. 6 is an explanatory top view showing a holding state of a hose fitting to a bracket in the first conventional example. In the conventional brake hose 1, the upper portion is connected to the master cylinder side, and the lower portion is connected to a wheel cylinder (not shown).

Although not shown, a screw-type metal fitting is provided at the end of the brake hose 1 on the wheel cylinder side, and the screw-type metal fitting is connected to a connecting portion provided at a predetermined position of the wheel cylinder. It is screwed in and tightened with a predetermined torque to connect with the wheel cylinder. And the brake hose 1 is provided with a hose fitting 50 at an intermediate portion thereof as shown in FIG.

The hose fitting 50 is made of a metal material, and includes a substantially cylindrical caulking portion 51 and a body portion 52 surrounding the outer periphery of the brake hose 1 as shown in FIGS. The caulking portion 51 integrally fixes the hose fitting 50 to the brake hose 1 by caulking in the radial direction. The body part 52 includes a rotation stopping part 53 and a cylindrical part 54.

The rotation stopping portion 53 is provided continuously below the caulking portion 51, forms a regular hexagon centered on the axis of the hose fitting 50, and has six wall surfaces 53a continuously formed circumferentially. It has a so-called bolt head shape. Cylindrical part 54
Is provided continuously on the lower surface of the rotation stopper 53, has the same axis as the center axis of the hose fitting 50, and has the same distance as the mutually parallel wall surfaces 53a, 53a of the rotation stopper 53, or the wall surface 53a, It has a diameter shorter than the distance between 53a.
The outer peripheral surface of the cylindrical portion 54 is provided with a circumferential groove 55 that is continuously recessed in the circumferential direction.

The strut 2 has a substantially cylindrical shape extending a predetermined length in the vertical direction when the vehicle is mounted on the vehicle.
A bracket 60 for holding the hose fitting 50 of the brake hose 1 is provided above the lower end by a predetermined height.

The bracket 60 has a substantially L-shaped vertical cross section, a base end of which is fixed to the outer peripheral surface of the strut 2, and a tip of which protrudes radially outward from the base end by a predetermined length, and which extends in the extending direction of the strut 2. It has a bracket flat plate portion 61 having an upper surface 65 and a lower surface 66 facing each other.

The bracket flat plate portion 61 includes a hose fitting 5
A through-hole 63 into which the cylindrical portion 54 can be inserted is formed, and the through-hole 63 and the outer edge 61 a of the bracket 60 are provided.
A slit 64 having a width that allows the passage of the brake hose 1 is provided between the slits 64.

The slit 64 is provided to facilitate the work of holding the brake hose 1 previously connected to the wheel cylinder to the strut 2. That is, in this embodiment, since the wheel side of the brake hose 1 is a screw-type fitting, it is necessary to rotate the brake hose 1 itself when connecting the brake hose 1 to the wheel cylinder. It cannot be kept.

Further, depending on the working process, it may be necessary to hold the connected brake hose 1 on the strut 2. In such a case, the slit 64 is provided in the bracket 60 so that the brake hose can be inserted to facilitate the work of holding the strut 2.

On the upper surface 65 of the bracket flat plate portion 61, there are provided protrusions 67 projecting upward at a predetermined height and facing each other through the through holes 63. The protrusions 67 each have a flat surface 68 facing each other. Have. The plane portion 68 is composed of two parallel wall surfaces 5 of the six wall surfaces 53a of the rotation stopper 53.
3a and 53a are separated from each other by a distance slightly longer than the distance between them, and during this time the rotation stopper 53 can be engaged with its rotation in the axial direction suppressed.

The clip 70 is made of an elastic plate member, and has a substantially strip-shaped insertion piece 71 extending in parallel with each other, and a connecting portion 72 connecting the base ends of these insertion pieces 71. It has a substantially U-shape.

The insertion piece 71 has substantially the same length as the length of the bracket plate 61 in the protruding direction, and has a concave curved surface shape that gradually protrudes downward as it moves from the distal end and the proximal end toward the center approaching each other. Having. And the insertion piece 71
Are separated from each other with an interval capable of simultaneously engaging in the circumferential groove 55.

The holding of the brake hose 1 to the strut 2 in the brake hose holding structure for a vehicle having the above-described structure is performed by first using a hose fitting 50 of the brake hose 1.
The wheel side portion (lower portion in the figure) is passed through the slit 64 and inserted into the through hole 63, and the rotation stopper 53 of the hose fitting 50 is formed by the protrusions 67, 67 on the upper surface 65 of the bracket flat plate portion 61. The cylindrical portion 54 is inserted into the through hole 63 so as to be engaged therebetween.

As shown in FIG. 5, the upper portion of the cylindrical portion 54 is disposed in the through hole 63, and the circumferential groove 55 provided in the cylindrical portion 54 is formed on the lower surface 66 of the flat plate portion 61.
It is arranged in a state of protruding downward from.

As shown in FIG. 6, the rotation stopping portion 53 has wall surfaces 53a, 53a which are parallel to each other.
The hose fittings 50 are opposed to and abut against the flat portions 68, 68, respectively, so that rotation of the hose fitting 50 about its axis is prevented.

Then, as shown in FIG. 5, the clip 70 is elastically mounted between the peripheral groove 55 and the bracket flat plate portion 61 with the center portion of the insertion piece 71 protruding downward. Accordingly, the body portion 52 is pressed downward by the elastic force of the insertion piece 71 toward the lower surface 66 of the bracket flat portion 61, and the rotation stopping portion 52 is, as shown in FIG. Thus, the contact portions indicated by oblique lines are pressed. Thereby, the hose fitting 50 is attached to the bracket 60.
Is held.

FIG. 7 is a perspective explanatory view showing a second conventional brake hose holding structure for a vehicle, and FIG. 8 is an explanatory view showing a holding state of a hose fitting to a bracket in a second conventional example. The same components as those in the first conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. This conventional example is different from the first conventional example in the structure of the bracket.

A rectangular through hole 83 is formed in the bracket flat plate portion 81 of the bracket 80 so that the cylindrical portion 54 can be inserted therethrough and has a left and right width slightly longer than the distance between the mutually parallel wall surfaces 52a of the rotation stopping portion 52. have. Then, the through-hole 83 and the outer edge portion 81a of the bracket flat plate portion 81 are formed.
A slit 84 having a width that allows the brake hose 1 to pass therethrough is provided.

At the left and right positions of the bracket flat portion 81 through the through holes 83, there are provided step portions 87 which are formed by bending the bracket flat portion 81 itself to be one step higher than the upper surface 85 of the bracket flat portion 81. I have.

The stepped portion 87 has parallel flat portions 88 opposed to each other via a through-hole 83.
The flat portion 8 of the step portion 87 when the
8, 88 are mutually parallel wall surfaces 53a of the rotation stopper 53,
It has a height that is opposed to and abuts with each of 53a.

The holding of the brake hose 1 to the strut 2 in the brake hose holding structure for a vehicle having the above-described structure is performed by first using the hose fitting 50 of the brake hose 1.
The wheel side portion (lower portion in the figure) is passed through the slit 84 and inserted into the through hole 83, and the rotation stopper 53 of the hose fitting 50 is connected to the step portions 87, 87 of the flat plate portion 81.
The cylindrical portion 54 is inserted into the through-hole 83 so as to be engaged between them.

As a result, as shown in FIG. 8, the rotation stopping portion 53 has wall surfaces 53a, 53a parallel to each other.
The hose fittings 50 are opposed to and abut against the flat portions 88, 88, respectively, so that the hose fitting 50 is prevented from rotating around its axis.

Then, similarly to the first conventional example, the clip 70 is attached to the cylindrical portion 54 projecting below the flat plate portion 81 of the bracket.
Between the peripheral groove 55 and the flat plate portion 81 of the bracket.
Accordingly, the cylindrical portion 54 is pressed downward from the lower surface 86 of the bracket flat portion 81 by the elastic force of the insertion piece 71, and the rotation stopping portion 52 is in contact with the bracket flat portion 81 as shown in FIG. The part shown by oblique lines in the inside will be pressed.

As described above, the brake hose 1 is held on the strut 2 by preventing the rotation of the hose fitting 50 around the axis and by pressing the hose fitting 50 against the flat plate portion 81 with a predetermined pressing force. (Not shown) to prevent the brake hose 1 from coming into contact with the vehicle body or wheels due to the movement of the brake hose 1.

According to this conventional example, unlike the first conventional example, the bracket does not need to be cut and raised, and is engaged with the rotation stopper 53 only by relatively easily pressing the bracket. The portion can be formed on the bracket 80, which simplifies the manufacturing process of the bracket.

[0029]

However, in the first and second conventional examples described above, in order to prevent the brake hose 1 from rotating in the axial direction, the projections 67 or the stepped portions 87 are provided on the brackets 60 and 80. I needed it. And
Since the projection 68 in the first conventional example is formed by cutting and raising during the manufacturing process of the bracket 60, the number of manufacturing processes is increased, and the formed flat portion 6 is formed.
Since the dimension between 8 and 68 requires precision, the manufacturing operation is complicated and the manufacturing cost is increased. The steps 87, 87 in the second conventional example require press working in the manufacturing process of the bracket, so that the manufacturing cost is increased as in the first conventional example.

In the above-described conventional vehicle brake hose holding structure, the rotation stopping portion 52 and the bracket flat plate portion 6 are provided.
6 and 8, the area of the contact portion is small as shown by hatched portions in FIGS. 6 and 8, and even if the rotation stopping portion 52 is enlarged in the radial direction, the bracket flat plate portions 61 and 81 are enlarged.
It is difficult to increase the area of the abutting portion.

In each of the above-described conventional examples, since the wheel side of the brake hose 1 is a screw-type fitting, and because the brake hose 1 is easily attached to the strut 2,
Although the slits 64 and 84 are provided in the brackets 60 and 80, the area of the contact portion between the rotation stopper 52 and the bracket flat portions 61 and 81 is further reduced. Therefore, it is difficult for the conventional brake hose holding structure for a vehicle to firmly hold the hose fitting 50 to the bracket 2.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a brake hose holding structure for a vehicle which is easy to manufacture and can hold the brake hose to the strut more firmly. To provide.

[0033]

According to a first aspect of the present invention, there is provided a brake hose holding structure for a vehicle having a flat portion protruding from a strut. A bracket provided with a slit provided between the locking hole and the locking hole and the outer edge of the flat plate portion to allow a brake hose to pass therethrough, and a bracket connected to an intermediate portion of the brake hose around an outer periphery of the intermediate portion. It has a substantially cylindrical body,
A hose fitting provided with a rotation stopping portion fitted into the locking hole formed in the body portion and a flange portion which comes into contact with the flat plate portion of the bracket when the rotation stopping portion is fitted into the locking hole; Hose fitting holding means for fitting the rotation stopper of the hose fitting and holding the fitting in a state in which the flange portion is pressed against the flat plate portion.

According to this, since the flange portion which comes into contact with the flat plate portion of the bracket is provided separately from the rotation stopping portion, a large area of the contact portion which comes into pressure contact with the flat plate portion can be ensured. Therefore, the hose fitting can be firmly fixed by the bracket.

Further, in order to fit the rotation stop into the lock hole, it is only necessary to penetrate the lock hole through the flat plate portion of the bracket. There is no need to perform cut-and-raise processing, press processing, or the like for forming a step or a step. Therefore, with the simplification of the bracket shape, the manufacture of the bracket is facilitated, and the manufacturing cost can be reduced.

[0036] In the brake hose holding structure according to the second aspect, the hose fitting holding means is opposite to the flange portion via a flat plate portion when the rotation stopper of the hose fitting is fitted into the locking hole. A peripheral groove continuously recessed in the circumferential direction on the outer peripheral wall surface of the body portion located on the side, and a clip elastically mounted between the peripheral groove and the flat plate portion.

According to this, since the clip is elastically mounted between the peripheral groove and the flat plate portion, the body located on the side opposite to the flange portion with the flat plate portion interposed therebetween is attached in a direction away from the bracket. The flange portion can be pressed against the flat plate portion of the bracket. Therefore, the hose fitting can be easily held by the bracket.

According to a third aspect of the present invention, the hose fitting holding means is arranged so that when the rotation stopper of the hose fitting is fitted into the locking hole, the hose fitting holding means is opposite to the flange through the flat plate. And a nut portion which is screwed on the outer peripheral wall surface of the body portion and a nut portion which sandwiches the flat plate portion between the external thread portion and the flange portion in a state of being screwed with the external thread portion.

According to this, the bracket is held between the flange portion and the nut portion screwed to the male screw portion,
Since the flange portion is pressed against the flat plate portion of the bracket, the hose fitting can be securely held by the bracket as compared with holding by a clip. Therefore, it is possible to more reliably hold the brake hose on the strut.

[0040]

Next, a first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective explanatory view schematically showing the present embodiment, FIG. 2 is a side explanatory view showing an enlarged main part in an assembled state of FIG. 1, and FIG.
FIG. 4 is an explanatory top view showing a holding state of the hose fitting to the bracket in the present embodiment. The same components as those in the first and second conventional examples are denoted by the same reference numerals, and a detailed description thereof will be omitted.

The brake hose 1 has a hose fitting 10 at an intermediate portion as shown in FIG. The hose fitting 10 is made of a metal material and includes a substantially cylindrical caulking portion 11 and a body portion 12 surrounding the outer periphery of the brake hose 1 as shown in FIGS. 1 and 2.

The caulking portion 11 integrally fixes the hose fitting 10 to the brake hose 1 by caulking in the radial direction. The body portion 12 includes a flange portion 13 and a rotation stopping portion 1.
4, a cylindrical portion 15 is provided. The flange portion 13 is provided continuously below the caulking portion 11 and has a substantially disk shape extending radially around the axis of the hose fitting 10. And it has a diameter larger than the maximum diameter of the rotation stopper 14 described later.

The rotation stopping portion 14 is provided continuously on the lower surface 13b of the flange portion 13, forms a regular hexagon around the axis of the hose fitting 10, and has six wall surfaces 14a formed continuously in a circumferential shape. It has a so-called bolt head shape.

The cylindrical portion 15 is provided continuously on the lower surface of the rotation stopper 14, and has the same distance as the distance between the mutually parallel wall surfaces 14a of the rotation stopper 14 about the axis of the hose fitting 10. Alternatively, it has a cylindrical shape having a shorter diameter. In addition, a peripheral groove 16 that is continuously recessed in the circumferential direction is provided in an upper portion of the cylindrical portion 15.

The bracket 20 has a substantially L-shaped vertical section, and has a base end fixed to the outer peripheral surface of the strut 2 and a front end projecting radially outward from the base end to be orthogonal to the extending direction of the strut 2. It has a bracket flat plate portion 21.

The bracket flat plate portion 21 has a predetermined thickness, and is provided with a substantially rectangular locking hole 23 as shown in FIGS. As shown in FIG. 3, the locking hole 23 includes locking surfaces 23 a and 23 b opposed to each other in parallel, and a separation distance between the locking surfaces 23 a and 23 b is parallel to each other of the rotation stopper 14. Wall surfaces 14a, 14a
It is set slightly larger than the interval. Therefore, the locking hole 23 can be accommodated in a state where the rotation stopper 14 is engaged, and prevents the rotation stopper 14 from rotating in the axial direction.

Then, the locking hole 23 and the bracket flat plate portion 2
A slit 24 having a width that allows the brake hose 1 to pass therethrough is formed between the outer peripheral portion 21a and the outer peripheral portion 21a.
The operation of the slit 24 is the same as that of the above-described conventional example, and facilitates the operation of holding the brake hose 1 previously connected to the wheel cylinder to the strut 2.

The clip 30 is made of a substantially rectangular flat plate member having elasticity, and includes a substantially strip-shaped insertion piece 31 extending in parallel with each other, and a connecting portion 32 connecting the base ends of these insertion pieces 31. And has a substantially U-shape having

The insertion piece 31 has substantially the same length as the length of the bracket plate 21 in the protruding direction, and has a concave curved surface shape that gradually protrudes downward as it moves from the distal end and the proximal end toward the center approaching each other. Have. And the insertion piece 31
Are spaced from each other so that they can be simultaneously engaged in the circumferential groove 16.

In holding the brake hose 1 on the strut 2 in the brake holding structure having the above structure, first, the brake hose 1 passes through a slit 24 through a portion of the brake hose 1 closer to the wheel (lower portion in the figure) than the hose fitting 10. Then, after the brake hose 1 is moved in the axial direction and passed through the cylindrical portion 15, the rotation stopper 14 of the hose fitting 10 is fitted into the lock hole 23.

As a result, as shown in FIG. 2, the peripheral groove 16 is arranged so as to protrude downward from the lower surface 26 of the flat plate portion 21. In addition, the rotation stopper 14 is provided in FIG.
As shown in the figure, the mutually parallel wall surfaces 13a, 13a face and abut against the locking surfaces 23a, 23b of the locking hole 23, respectively, and the rotation of the hose fitting 10 about its axis is prevented. .

Then, as shown in FIG. 2, the clip 30 is elastically mounted between the peripheral groove 16 and the bracket flat plate portion 21 with the center portion of the insertion piece 31 protruding downward. As a result, the hose fitting 10 is constantly pressed down below the lower surface 26 of the bracket flat plate portion 21 by the elastic force of the insertion piece 31. Therefore, as shown in FIG. 3, the flange portion 13 is brought into pressure contact with the bracket flat plate portion 21 and the contact portion indicated by oblique lines in the drawing.

As described above, by providing the flange portion 12 in contact with the bracket flat plate portion 21 separately from the rotation stopping portion 14, a large area of the contact portion in pressure contact with the bracket flat plate portion 21 can be ensured. Therefore, the hose fitting 10 can be firmly held by the bracket 20, and the brake hose 1 can be securely held on the strut 2.

Also, the provision of the locking holes 23 for fitting the rotation stoppers 14 in the brackets 20 allows the brackets 20 to be formed with projections and steps for engaging with the rotation stoppers 14 as in the prior art. There is no need to perform any processing steps. Therefore, with the simplification of the shape of the bracket, the bracket can be easily manufactured, and the manufacturing cost can be reduced.

In the first embodiment, the flange 13 is pressed against the flat plate portion 21 by the peripheral groove 16 and the clip 30 provided in the cylindrical portion 15, and the hose fitting 1 is pressed.
The hose fitting holding means is configured to always press and contact the lower part of the cylindrical part 15 below the flat plate part 21. As a second embodiment, although not shown, a male screw is attached to the outer peripheral wall surface of the cylindrical part 15. Alternatively, the flat portion may be screwed, the bracket flat portion may be sandwiched between the flange portion and the nut portion screwed into the male screw portion, and the flange portion may be pressed against the flat portion of the bracket. According to this, the hose fitting 10 can be more reliably held by the bracket 20 as compared with the holding method using the clip 30 in the first embodiment, and the brake hose 1 can be more securely held on the strut 2. It can be.

[0056]

As described above, according to the brake holding structure of the present invention, by providing the flange portion separately from the rotation stopping portion, the area of the contact portion which comes into pressure contact with the flat plate portion of the bracket is widened. Therefore, the hose fitting can be held more firmly by the bracket, and the brake hose can be securely held by the strut.

Further, since the rotation stopping portion is fitted into the locking hole, the bracket need only be formed by penetrating the locking hole in the flat plate portion of the bracket. There is no need to perform a processing step for forming the engaging protrusions and the stepped portions, and the simplification of the bracket shape facilitates the manufacture of the bracket, thereby reducing the manufacturing cost.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view showing a first embodiment.

FIG. 2 is an explanatory top view showing a state in which a hose fitting is held on a bracket in the first embodiment.

FIG. 3 is an enlarged side view showing a main part in an assembled state of FIG. 1;

FIG. 4 is a perspective explanatory view showing a first conventional brake hose holding structure for a vehicle.

FIG. 5 is an enlarged side view showing a main part in an assembled state of FIG. 4;

FIG. 6 is an explanatory top view showing a state in which a first conventional hose fitting is held on a bracket.

FIG. 7 is an explanatory perspective view showing a second conventional brake hose holding structure for a vehicle.

FIG. 8 is an explanatory top view showing a second conventional example of a hose fitting held on a bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brake hose 2 Strut 10 Hose fitting 12 Body 13 Flange part 14 Rotation stop part 15 Cylindrical part 16 Circumferential groove (Hose fitting holding means) 20 Bracket 21 Bracket flat part 23 Locking hole 24 Slit 30 Clip (Hose fitting holding means) 31 Insert

Claims (3)

[Claims] 1. A vehicle brake hose holding structure for holding an intermediate portion of a brake hose on a strut of a suspension, comprising: a flat plate protruding from the strut; a locking hole formed in the flat plate; A bracket having a slit between the locking hole and an outer edge of the flat plate portion for allowing the passage of the brake hose; and a substantially cylindrical member which is caulked to an intermediate portion of the brake hose around an outer periphery of the intermediate portion. A rotation stopping portion that fits into the locking hole formed in the body portion, and comes into contact with the flat plate portion of the bracket when the rotation stopping portion is fitted into the locking hole. A hose fitting having a flange portion, and a hose fitting holding means for fitting a rotation stopper of the hose fitting into the locking hole, and holding the flange portion in a fitted state in which the flange portion is pressed against the flat plate portion. Have Vehicle brake hose holding structure characterized in that. 2. The hose fitting holding means, wherein the rotation stopper of the hose fitting is fitted into the locking hole. 2. The vehicle according to claim 1, further comprising: a circumferential groove continuously recessed in a circumferential direction on an outer peripheral wall surface; and a clip elastically mounted between the circumferential groove and the flat plate portion. 3. Brake hose holding structure. 3. The hose fitting holding means, wherein the rotation stopper of the hose fitting is fitted into the locking hole, and the body part located on the opposite side to the flange part with the flat part interposed therebetween. The male screw part threaded on the outer peripheral wall surface, and a nut part which clamps the flat plate part between the male screw part and the flange part in a state where the male screw part is screwed, The claim 1 characterized by the above-mentioned. Vehicle brake hose holding structure.