JPH0914514A - Hose clamp - Google Patents

Abstract

PURPOSE: To provide a hose clamp which does not produce any undue force on a fixedly holding part even if a hydraulic pressure is applied and which is not displaced aslant even if used for long time. CONSTITUTION: A hose clamp holds fixedly multiple hydraulic hoses 11 and 13, arranged in parallel with each other, from both sides of the hoses. Also, the hose clamp 20 is provided with holding plates 2 positioned on both sides of the hoses and a fixture to fix them. In addition, each of the holding plates 2 is provided with a hose fixing part 5 which fixedly holds at least two hydraulic hoses 13 among the hoses when the two holding plates are assembled and a hose guide part 6 which keeps a clearance from the other unfixed hydraulic hoses 11 and holds the other hoses 11 movably in longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hose clamp for clamping a plurality of hydraulic hoses in parallel.

[0002]

2. Description of the Related Art For example, a plurality of hydraulic hoses arranged in a mast part of a forklift need to be clamped in parallel so that the alignment of the plurality of hydraulic hoses is not disturbed by the elevation of the mast during loading and unloading. There is. A hose clamp 90 has been used as a means for sandwiching and fixing a plurality of hydraulic hoses in parallel, as shown in FIGS. 7 and 8, for example.

As shown in FIG. 7, a conventional hose clamp 90 is a clamp for sandwiching and fixing six hydraulic hoses 7, and a sandwiching plate 92 located on each of the front and back sides of the hose row, and the sandwiching plate 92. It is composed of a bolt 93 and a nut 94 that are fixed together. As shown in FIG. 7, the holding plate 92 is made by pressing an iron plate, and has six semicircular hose fixing portions 95.

The hose fixing portion 95 is constructed so that the inner diameter thereof becomes smaller than the outer diameter of the hose 7 when the holding plates 92 are put together. Therefore, all the hydraulic hoses 7 are clamped and fixed by positioning each hydraulic hose 7 on the hose fixing portion 95, sandwiching it by the sandwiching plate 92, and tightening it by the bolts 93 and the nuts 94. Also,
A rubber sheet 79 having a thickness of about 1 mm is interposed between the hose fixing portion 95 and the clamped hydraulic hose 7 in order to improve the adhesion thereof.

[0005]

However, the above conventional hose clamp 90 has the following problems. That is, the hydraulic hose 7, which has been operated with hydraulic pressure, has a larger hose diameter and a shorter length as the hydraulic pressure in the hose increases. On the other hand, all the hoses constituting the hose row are integrally clamped and fixed by the hose clamp 90, and the length of the hose between two hose clamps 90 adjacent in the longitudinal direction is kept constant. There is.

Therefore, for example, when the hydraulic pressure is applied to only one hose, the hose generates a force that tends to shorten the gap between the adjacent hose clamps 90, and the other hoses have the same force. Generates force in the opposite direction.

For example, as shown in FIG. 9, in the curved portion of the hose, the hydraulically actuated hose 71 becomes shorter, and the bending radius becomes smaller than that of the unactuated hose 72. Therefore, an unreasonable force is applied to each hose and the hose fixing portion of the hose clamp 90. Further, even in the straight portion, an unreasonable force is applied to each hose and the hose clamp 90.

When the hose clamp 90 is repeatedly used for a long time while repeating such a state, the hose clamp 90 may be gradually displaced obliquely with respect to the hose row as shown in FIG. Therefore, when working, for example, when the hydraulic hose 7 is moved up and down to move the curved portion, the movement may be uneven.

The present invention has been made in view of the above-mentioned problems of the prior art. Even if hydraulic pressure is applied, an unreasonable force will not be generated in the clamping and fixing portion, and it will not be slanted even if it is used for a long time. ， It is intended to provide a hose clamp.

[0010]

The present invention relates to a clamp for clamping and fixing the hydraulic hoses from both side surfaces in a state where a plurality of hydraulic hoses are arranged in parallel, and the clamps are clamping plates located on both sides of the hose row. And a fixture for fixing the sandwiching plates together, and each sandwiching plate has a hose fixing portion for sandwiching and fixing at least two hydraulic hoses of the hose row when both are aligned with each other, And a hose guide portion that holds a gap between the other hydraulic hose that is not fixed and that holds the other hose so as to be movable in the longitudinal direction thereof.

What is most noticeable in the present invention is that each holding plate has the hose fixing portion for holding and fixing at least two hydraulic hoses, and the hose guide portion for loosely fitting the hydraulic hoses. is there.

As the holding plate, for example, metal such as iron or aluminum alloy, synthetic resin, or the like can be used. Further, as the fixing tool, for example, a bolt and a nut, a screw or the like, or a clip and a clip hole which are integrally provided in the holding plate (see Embodiment 2) can be used.

Further, in the hose fixing portion, it is preferable that a space between the hose fixing portions when the hose is clamped is smaller than an outer diameter of the hydraulic hose. Thus, the hydraulic hose can be easily clamped and fixed only by fixing the clamp plates together.

Further, the hose fixing portion preferably has a fixing claw protruding toward the hydraulic hose to be clamped. As a result, the displacement of the hydraulic hose can be more reliably prevented. In this case, the inner diameter of the hose fixing portion may be larger or smaller than the outer diameter of the hydraulic hose.

Further, it is preferable that the peripheral edge portions of the openings at both ends of the hose fixing portion and the hose guide portion are curved. This eliminates the risk of damaging the outer surface of the hydraulic hose.

[0016]

In the hose clamp of the present invention, the holding plate is provided with a hose fixing portion for holding and fixing at least two hydraulic hoses. Therefore, when clamping the hose row, at least two hydraulic hoses
Firmly fixed to the hose clamp. Further, the hose clamp of the present invention is provided with the hose guide portion in addition to the hose fixing portion. Therefore, the hose located in the hose guide portion is held so as to be movable in the length direction.

Therefore, the change in length of each hose caused by the presence or absence of hydraulic pressure applied to the hose and the unreasonable force to be generated can be totally absorbed and alleviated by the entire length of the hose. Therefore, no excessive force is applied to the hose and hose clamp.

More specifically, regarding the above points, for example, when hydraulic pressure is applied to a hydraulic hose located at the hose fixing portion (hereinafter referred to as a fixed hose), the length of the fixed hose is shortened. Along with this, the two hose clamps adjacent to each other in the length direction of the hose try to approach each other. At that time, other hydraulic hoses located in the hose guide portion (hereinafter referred to as free hoses) can freely move in the length direction. Therefore, the total length of the free hose can absorb and mitigate the difference in the length of each hose and the unreasonable force to be generated, and do not give an unreasonable force to the hose clamp.

Further, the hydraulic pressure is operated in various combinations, for example, when the hydraulic pressure is not applied to the fixed hose but is operated to the free hose, or when the hydraulic pressure is applied to only one fixed hose. Even in such a case, the above-mentioned free hose absorbs and alleviates the unreasonable force to be generated. Therefore, the positional displacement between the fixed hose and the hose clamp does not occur (see the embodiment).

Therefore, according to the present invention, it is possible to provide a hose clamp which does not generate an unreasonable force on the holding and fixing part even when hydraulic pressure is actuated, and which does not shift obliquely even when used for a long time. .

[0021]

【Example】

Example 1 FIG. 1 shows a hose clamp according to an example of the present invention.
This will be described with reference to FIG. The hose clamp 20 of this example is
As shown in FIG. 1, it is a clamp that holds six hydraulic hoses (not shown) in parallel and clamps the hydraulic hoses from both side surfaces thereof.

As shown in FIG. 1, the hose clamp 20 has a holding plate 2 located on each side of the hose row, and a fixture for fixing the holding plate 2 together. A bolt 3 and a nut 4 are used as the fixture. As shown in FIGS. 1, 2 and 4, the holding plates 2 are not fixed to the hose fixing portion 5 for holding and fixing the two hydraulic hoses 13 in the hose row when they are aligned with each other. Of the hydraulic hose 11 and a hose guide portion 6 having a substantially semi-arcuate shape for holding the other hose 11 so as to be movable in the longitudinal direction thereof.

The holding plate 2 is manufactured by pressing an iron plate. In addition, the hose fixing portion 5 is
It has two fixing claws 55 protruding toward the direction of the hydraulic hose to be clamped. Further, as shown in FIG. 3, the opening peripheral edge portions 50 at both ends of the hose fixing portion 5 are curved. Similarly, the opening peripheral edge portions 60 at both ends of the hose guide portion 6 are also curved.

Next, the operation and effect of this embodiment will be described. In the hose clamp 20 of this example, the holding plate 2 is provided with a hose fixing portion 5 for holding and fixing two hydraulic hoses. The hose fixing portion 5 is provided with the fixing claw 55. Therefore, when the hose row is clamped, the two hydraulic hoses are firmly fixed to the hose clamp 20. In addition, the hose clamp 20 of this example
In addition to the hose fixing portion 5, the hose guide portion 6 is provided in the. Therefore, when the hose row is clamped, the hose located in the hose guide portion 6 is held so as to be movable in the length direction.

Therefore, it is possible to absorb and alleviate the length change and the unreasonable force to be generated due to the presence or absence of hydraulic actuation on the hose as a whole by the entire length of the hose.
Therefore, no unreasonable force is applied to the hose and the hose clamp 20.

For example, in FIG. 4, when hydraulic pressure is applied to the hydraulic hoses 13 (hereinafter referred to as fixed hoses 13) located in the above two hose fixing portions 5, the lengths of the two fixed hoses are Shrinks. Along with this, the two hose clamps 20 adjacent to each other in the length direction of the hose try to approach each other. At that time, the other hydraulic hose 11 (hereinafter referred to as the free hose 11) located in the hose guide portion 6 can freely move in the length direction. Therefore, the total length of the free hose can absorb or mitigate the difference in the length of each hose and the unreasonable force to be generated.

Further, for example, when hydraulic pressure is not applied to the fixed hose 13 but hydraulic pressure is applied to the free hose 11, only the hydraulically operated hose located in the hose guide portion 6 is the same as above. I try to shrink. At this time, the free hose 11 can freely move in the length direction with respect to the hose clamp 20. Therefore, the total length of the free hose can absorb and alleviate the difference in the length of each hose and the unreasonable force to be generated.

Further, for example, when hydraulic pressure is applied to only one fixed hose 13, only the fixed hose portion contracts, and the hose clamp 20 moves diagonally with respect to the hose row. However, even in this case, since there is almost no resistance due to other hoses, an unreasonable force does not act between the fixed hose 13 and the hose clamp 20. Therefore, these positional relationships do not shift. Therefore,
When the hydraulic pressure is released, the hose clamp 20 returns to its original position in the direction perpendicular to the hose row.

In addition, even when hydraulic pressure is activated in various combinations, the above-mentioned free hose 11 absorbs and alleviates the unreasonable force to be generated. Therefore,
The positional displacement between the fixed hose 13 and the hose clamp 20 does not occur. Therefore, according to the present example, it is possible to obtain a hose clamp that does not generate an unreasonable force on the clamping and fixing part even when hydraulic pressure is applied and does not shift obliquely even when used for a long time.

Embodiment 2 In the hose clamp 12 of this embodiment, as shown in FIGS. 5 and 6, instead of the hose fixing portion 5 of Embodiment 1, a hose fixing portion having an inner diameter smaller than the outer diameter of the hydraulic hose. 5
Twenty. The sandwich plate 220 of this example is made of synthetic resin. Then, as the fixture, the clip 320 and the clip hole 420 integrally provided on the holding plate 220 were used without using another component such as a bolt. Others are the same as the first embodiment.

In this example, the inner diameter of the hose fixing portion 520 is smaller than the outer diameter of the hydraulic hose. Therefore, the hose row can be easily fixed by simply sandwiching it from both sides. Further, the clip 320 and the clip hole 420 are used as the fixture. Therefore, the hydraulic hose can be clamped and fixed very easily only by pressing the two clamp plates 220 together. Others, Example 1
The same effect as described above can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hose clamp according to a first embodiment.

FIG. 2 is a perspective view of a holding plate according to the first embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is an explanatory view showing a state where the hydraulic hose is clamped in the first embodiment.

FIG. 5 is a perspective view of a hose clamp according to a second embodiment.

FIG. 6 is a perspective view of a holding plate according to the second embodiment.

FIG. 7 is a sectional view of a conventional hose clamp.

FIG. 8 is an explanatory view showing a usage state of a hose clamp in a conventional example.

FIG. 9 is an explanatory view showing a problem of the hose clamp in the conventional example.

FIG. 10 is an explanatory view showing a problem of the hose clamp in the conventional example.

[Explanation of symbols]

 11. . . Hydraulic hose (free hose), 13. . . Hydraulic hose (fixed hose), 20. . . Hose clamp, 2,220. . . Clamping plate, 32. . . Clip, 420. . . Clip hole, 5,520. . . Hose fixing part, 55. . . Fixing claws, 6. . . Hose guide part,

Claims (4)

[Claims] 1. A hose clamp for clamping and fixing the hydraulic hoses from both side surfaces of a plurality of hydraulic hoses in a parallel state, wherein the hose clamps include clamping plates located on both sides of a hose row, respectively. A holding fixture for fixing the holding plates together, and each holding plate has a hose fixing portion for holding and fixing at least two hydraulic hoses in the hose row when the two are fitted together, and the other not fixed. And a hose guide portion for holding the other hose so as to be movable in the length direction thereof. 2. The hose clamp according to claim 1, wherein a gap between the hose fixing portions when the hydraulic hose is clamped and fixed is smaller than an outer diameter of the hydraulic hose. 3. The hose clamp according to claim 1 or 2, wherein the hose fixing portion has a fixing claw protruding toward a hydraulic hose to be clamped. 4. The method according to claim 1, wherein:
A hose clamp characterized in that the hose fixing part and the hose guide part are curved at the peripheral edges of the openings at both ends.