JP3978831B2 - Hose fixing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for fixing a hose along an outer peripheral portion of a predetermined support member.
[0002]
[Prior art]
In an apparatus that performs control using a fluid such as oil, a single or a plurality of hoses through which the fluid flows are fixed to a predetermined support member so as not to interfere with maintenance and operation. 8 and 9 are a perspective view and a sectional view of such a conventional hose fixing device. The hose fixing device includes a metal clamp 1, a bolt 2 and a nut 3 attached to an end of the clamp 1, and a thin plate 4. The clamp 1 is arranged so as to surround both the plurality of flexible hoses 5 and the pipe 6 to which these hoses 5 are attached. When the bolt 2 attached to the end of the clamp 1 is tightened, the clamping force increases. It is like that. The thin plate 4 is disposed between the clamp 1 and these hoses 5 and is curved according to the outer shape of the hose 5 so that the hose 5 does not shift between the clamp 1 and the pipe 6.
[0003]
FIG. 10 shows a cross-sectional view of another conventional hose fixing device. The hose fixing device includes a band member 7 and a resin back plate 8. The band member 7 is wound around a plurality of flexible hoses 5 and a pipe 6 to which these hoses 5 are attached. A hole 9 is provided at one end of the band member 7, and the other end of the band member 7 passes through the hole 9. Therefore, when the other end of the band member 7 is pulled, the clamping force applied to the hose 5 increases. A back plate 8 having a uniform thickness is arranged between the plurality of hoses 5 and the pipe 6. Holes 10 are provided at both ends of the back plate 8, and the band member 7 passes through these holes 10.
[0004]
[Problems to be solved by the invention]
However, in the conventional hose fixing device shown in FIGS. 8 and 9, when the clamp 1 is sandwiched between the pipes 6, it is necessary to remove the bolts 2 and nuts 3 and open the ends of the clamps 1, thereby improving workability. That wasn't true. Further, since the clamp 1 is made of metal, there is a fear that the coating film on the surface of the pipe 6 may be damaged when the clamp 1 is assembled to the pipe 6.
[0005]
On the other hand, in the conventional hose fixing device shown in FIG. 10, if the band member 7 is tightened too much, the hose 5 located on both sides of the plurality of hoses 5 is particularly crushed and the cross-sectional area of the flow path is reduced. There is a problem that the loss increases, and conversely, if the band member 7 is weakly tightened, a necessary clamping force cannot be obtained and the hose 5 cannot be firmly fixed.
[0006]
The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a hose fixing device that can obtain a necessary clamping force without crushing a flexible hose and has good workability. To do.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a hose fixing device for fixing a hose along an outer peripheral portion of a support member, a band member wound around the hose and the support member, and the hose and the support member. And a back plate through which a band member is inserted into holes formed in both end portions thereof, and both end portions of the back plate are provided on the outer peripheral surface of the hose near the hole forming portions, respectively. A concave surface is formed in accordance with the curvature, and the hole forming part of the back plate has a thickness for guiding the band member so as not to crush the hose when the band member is tightened, and the band member passing through the hole in the back plate It is characterized by being guided substantially perpendicular to the surface of the support member .
[0008]
The back plate may be provided with unevenness for preventing slippage on the surface in contact with the support member.
The band member is formed with a plurality of recesses at substantially equal intervals in the longitudinal direction, and selectively formed as one of the plurality of recesses of the band member when the band member is tightened in the hole forming portion of the back plate. You may form the convex part to engage.
In addition, the back plate may be formed such that the surface in contact with the hose conforms to the outer shape of the hose.
Furthermore, it is preferable that the band member and the back plate are made of resin.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1 FIG.
FIG. 1 shows a view when the hose fixing device according to Embodiment 1 of the present invention is used to fix three flexible hoses. The hose fixing device is composed of a band member 11 and a back plate 12. The band member 11 is a band-shaped member having a rectangular cross-sectional shape, and is a member having good flexibility formed from a resin such as nylon, for example. The band member 11 is wound around three flexible hoses 13 and a pipe (support member) 14 to which the hoses 13 are fixed. A hole 15 is formed at one end of the band member 11, and the other end of the band member 11 is inserted into the hole 15. On the inner surface of the hole 15, a hook portion 16 is formed that extends in the insertion direction of the band member 11 and has a tip protruding toward the radial axis of the hole. On the other hand, recesses 17 are formed at equal intervals in the longitudinal direction of the band member 11 at positions where the other end of the band member 11 engages with the hook portion 16.
[0010]
Next, the back plate 12 will be described with reference to FIGS. 1 and 2. The back plate 12 is a member having good flexibility formed from a resin such as nylon, for example, and is disposed between the hose 13 and the pipe 14. A hole 18 having a rectangular cross section through which the band member 11 is inserted is formed in both ends of the back plate 12. The formation part 19 of the hole 18 of the back plate 12 has a thickness T that can guide the band member 11 so as not to crush the hose 13 when the band member 11 is tightened. Specifically, this thickness T is approximately half the length of the outer shape of the hose 13 in the present embodiment, but may be a longer length. The back plate 12 is formed in a thin plate shape except for the forming portions 19 of the holes 18 at both ends, and a concave surface 20 is formed in the vicinity of each forming portion 19 according to the curvature of the outer peripheral surface of the hose 13. . Further, a groove 21 is formed on the back side of the concave surface 20 so that the back plate 12 can be easily bent along the pipe 14.
[0011]
In the hose fixing device configured as described above, when the other end inserted through the hole 15 at one end of the band member 11 is pulled and the band member 11 is tightened, the tension of the band member 11 is increased and the hose 13 becomes the desired one. It is fixed to the pipe 14 with a clamping force. At this time, since the forming portion 19 of each hole 18 is thick, the band member 11 passing through these holes 18 is guided at a substantially right angle to the pipe 14, so that the hose 13 is crushed by the band member 11. There is no. Therefore, the pressure loss of the fluid flowing in the hose 13 does not increase, and the original circular cross section of the hose 13 is maintained even if there is no fluid pressure from the inside of the hose 13, so that an excessive force is not applied to the hose 13. Can be fixed.
[0012]
Moreover, since the concave surface 20 matched with the outer shape of the hose 13 is formed in the vicinity of the forming portion 19 of the hole 18, the contact area between the back plate 12 and the hose 13 disposed on both sides is large, and the hose 13 is connected to the hose 13 from the back plate 12. The force acting on the is not partly concentrated. Further, when the band member 11 tries to move in the loosening direction, the hook portion 16 formed in the hole 15 is caught in the concave portion 17 of the band member 11, so even if the force pulling the other end of the band member 11 is removed. The clamping force is maintained.
[0013]
Furthermore, since the band member 11 and the back plate 12 are molded from resin, there is no fear of damaging the coating film on the surface of the pipe 14 when assembled to the pipe 14, and the hose can be fixed by a simple operation of tightening. So workability is good.
[0014]
Embodiment 2. FIG.
In the hose fixing device according to the first embodiment, as shown in FIGS. 3 and 4, a plurality of protrusions 22 are provided on the back surface of the back plate 12 that contacts the pipe 14 to form anti-slip unevenness. Good. The protrusion 22 extends in a direction substantially parallel to the axial center direction of the pipe 14 when the back plate 12 is attached to the pipe 14, and even if the clamping force of the band member 11 is somewhat weak, the back plate 12. Is difficult to shift in the circumferential direction of the pipe 14. In addition, the aspect of a protrusion is not restricted above, For example, you may form the some protrusion inclined with respect to the axial center direction of the pipe 14 in a grid | lattice form, and the effect | action similar to this aspect is acquired.
[0015]
Embodiment 3 FIG.
In the hose fixing device according to the first embodiment, as shown in FIG. 5, a claw-like convex portion 23 is provided on the surface where the hole 18 of the back plate 12 is formed, and the convex portion 23 is selectively engaged with the band member 11. A plurality of recesses 24 that can be combined may be provided. The convex portion 23 protrudes from the center side of the back plate 12 toward the axial center of the hole 18 at the opening edge of the hole 18 of the back plate 12. On the other hand, a plurality of recesses 24 are provided on the inner surface of the band member 11 at substantially equal intervals in the longitudinal direction. As shown in FIG. 6, the protrusion amount of the protrusion 23 is such that the dimension D between the tip of the protrusion 23 and the inner surface of the hole 18 facing the protrusion 23 is larger than the width W of the band member 11. Is set to
[0016]
Thereby, even if the band member 11 is tightened more strongly, after the band member 11 is tilted in the hole 18 and any of the concave portions 24 is caught by the convex portion 23, the tension of the portion of the band member 11 surrounding the hose 13 Therefore, the hose 13 is not crushed while a strong clamping force can be obtained. Even if the convex portion 23 as described above protrudes from the inner surface of the hole 18, when the band member 11 is inserted into each hole 18 of the back plate 12, the band member 11 is inserted straight into the hole 18. The part 23 can be smoothly inserted without being caught in the recess 24.
[0017]
Embodiment 4 FIG.
In the hose fixing device according to the first embodiment, as shown in FIG. 7, the surface 25 of the back plate 12 that contacts the hose 13 may be formed in a shape along the outer shape of the hose 13. As a result, the hose 13 is less likely to be displaced between the back plate 12 and the band member 11 and fits better.
[0018]
It should be noted that the present invention which has been described with reference to the first to fourth embodiments can be implemented to fix less than three or four or more hoses 13.
[0019]
【The invention's effect】
As described above, according to the hose fixing device of the present invention as set forth in claim 1, Ri a thick formation of the hole of the back plate, the band member through the hole in the back plate to the surface of the support member Since it is guided almost at right angles, the hose will not be crushed even if the band member is tightened.
According to the hose fixing device of the second aspect, even if the band member is slightly weakened, the back plate is less likely to be displaced with respect to the support member.
According to the hose fixing device of the third aspect, it is possible to obtain a stronger clamping force, but the hose is not crushed.
According to the hose fixing device of the fourth aspect, the hose fits between the band member and the back plate.
According to the hose fixing device of the fifth aspect, since the band member and the back plate are made of resin, there is no fear of damaging the coating film of the support member even if they are assembled to the support member.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a hose fixing device according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view of the back plate of the hose fixing device according to Embodiment 1 of the present invention.
FIG. 3 is a cross-sectional view of a back plate of a hose fixing device according to Embodiment 2 of the present invention.
FIG. 4 is a diagram showing a back surface of a back plate of a hose fixing device according to Embodiment 2 of the present invention.
FIG. 5 is an enlarged cross-sectional view of a hose fixing device according to Embodiment 3 of the present invention.
FIG. 6 is a view showing an end portion of a back plate viewed from the axial direction of a hole in the hose fixing device according to Embodiment 3 of the present invention.
FIG. 7 is a cross-sectional view of a hose fixing device according to Embodiment 4 of the present invention.
FIG. 8 is a perspective view of a conventional hose fixing device.
FIG. 9 is a cross-sectional view of a conventional hose fixing device.
FIG. 10 is a cross-sectional view of another conventional hose fixing device.
[Explanation of symbols]
11 Band member 12 Back plate 13 Hose 14 Pipe 18 Hole 19 Forming part 22 Protrusion 23 Convex part 24 Concave part

Claims (5)

A hose fixing device for fixing a hose along an outer periphery of a support member, the band member being wound around the hose and the support member, and disposed between the hose and the support member. Consists of a back plate through which the band member is inserted into holes drilled in both ends, each of the back plate having a concave surface that matches the curvature of the outer peripheral surface of the hose in the vicinity of the hole forming portion. There is formed, formation of the hole of the back plate has a thickness for guiding the band member so as not to crush the hose when tightened the band member, the band member through hole of the back plate A hose fixing device, wherein the hose fixing device is guided substantially at right angles to the surface of the support member .   The hose fixing device according to claim 1, wherein unevenness for preventing slip is formed on the back plate on a surface in contact with the support member.   A plurality of recesses are formed in the band member at substantially equal intervals in the longitudinal direction, and one of the plurality of recesses of the band member is formed in the hole forming portion of the back plate when the band member is tightened. The hose fixing device according to claim 1, wherein a convex portion that selectively engages the two is formed.   The hose fixing device according to any one of claims 1 to 3, wherein a surface of the back plate that contacts the hose is formed in a shape along an outer shape of the hose.   The hose fixing device according to any one of claims 1 to 4, wherein the band member and the back plate are made of resin.

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