JPH0351925B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a hose band used for fixing a hose or a hose-like member.

[Conventional technology]

A conventionally used metal hose band with both ends open is, for example, as shown in FIG. The protrusion 4 is fitted into the locking hole 3 with the parts overlapped on the inside and outside. By plastically deforming the tightening ear portion 5 provided on a part of the band member 2 using a jig, the ring diameter is reduced and the hose 7 is tightened.

[Problem that the invention seeks to solve]

In the above-mentioned conventional product, a step 8 corresponding to the plate thickness occurs at the tip of the inner overlapping portion of the band member 2, so that sufficient tightening force cannot be obtained at this location.
Leakage is likely to occur from the A section.

Therefore, as illustrated in FIG. 20, a step 9 corresponding to the plate thickness is provided at the outer overlapping part of the band member 2,
The end 2a of the inner overlapping part on the inner surface side of this step 9
There are also some that allow you to enter. However, also in the case of this hose band 1, when tightening the band member 2, that is, when reducing the ring diameter, a part of the hose 7 is pushed by the inner end 2a of the band member 2, and as a result, the hose 7 Wrinkles 7a were formed on the surface, and the sealing performance was sometimes impaired at these locations.

[Means for solving problems]

The present invention is applied to a hose band that is made of a metal band-like member with both ends open, and that is rolled up into a ring shape so that both ends are stacked inside and outside of each other. A locking hole is formed in the outer overlapping part of the band-like member, a protrusion that engages with the locking hole is provided in the inner overlapping part, and a tightening ear is provided in a part of the longitudinal direction of the band-like member. It will be done.

The shape of the tip of the inner overlapping part is as follows:
This hose band is formed into a tapered shape in which the plate thickness decreases on the tip side, and the tip is provided with one or more punched holes or notches along the longitudinal direction.

[Effect]

In order to fix a member to be tightened, such as a hose, using the hose band with the above configuration, the band-shaped member is wrapped around the surface to be tightened, and both ends of the band-shaped member are overlapped inside and outside of each other, and a The protrusion is fitted into the locking hole provided in the outer overlapping portion. Then, by plastically deforming the tightening ears using a jig, the diameter of the ring is reduced and the ring is tightened to the surface to be tightened.

At the tip of the inner overlapping part of the band-shaped member, the plate thickness gradually decreases toward the tip, and a punched hole or notch hole is provided in the longitudinal direction.
Easily adapts to the curvature of the surface to be tightened. In addition, since it has a pointed shape that becomes thinner toward the tip, there is no extreme step difference in the overlapping portion of the ends.

〔Example〕

In one embodiment shown in FIGS. 1 to 6, the hose band 10 consists of a single strip member 11 made of metal such as stainless steel. Both ends of this strip member 11 are open free ends. The band member 11 is rolled into a ring shape and is connected by fitting the protrusion 14 into the locking hole 13 with both ends overlapped inside and outside. The locking hole 13 is connected to the belt-shaped member 11
The protrusions 14 are provided on the outer overlapping portions, and the protrusions 14 are provided on the inner overlapping portions. These locking holes 13
One or more protrusions 14 are provided.

The protrusion 14 is formed by cutting and raising a part of the band member 11 outward and protruding outward. That is, as illustrated in FIGS. 5 and 6, the protrusion 1
The tip side of the protrusion 4 protrudes obliquely, and is provided with inclined surfaces 14a on both sides in the width direction of the protrusion 14, and is squeezed out into an outwardly convex shape so that the cross section is arched. The protrusion 14 having such a shape is
Can sufficiently withstand high tensile force during tightening.

Further, a tightening ear portion 15 is provided in a portion of the strip member 11 in the longitudinal direction. This tightening ear part 15
are a pair of legs 15a that stand up toward the outside,
15b, and a main portion 15c extending between these leg portions 15a and 15b.

Tip portion 11a of the inner overlapping portion of the band member 11
As shown in FIG. 2, the plate has a tapered shape (approximately isosceles triangle) in which the plate width decreases toward the tip end in the width direction. Further, in the thickness direction, as shown in FIG. 3, the plate is formed in a tapered shape such that the plate thickness on the tip side gradually decreases. Moreover, a punched hole 17 along the longitudinal direction is formed in this tip portion 11a. This punched hole 17 is punched out by press working, and is formed in a tapered shape (approximately isosceles triangle) with the width becoming narrower toward the tip, similar to the shape of the tip 11a.

In this way, the distal end portion 11a of the band-shaped member 11 is formed in such a shape that the width and thickness of the strip gradually decrease toward the distal end side, and the punched holes 11a extend along the longitudinal direction.
7, it is easy to bend in an arc shape along the curvature of the surface to be tightened, and it conforms well to the surface to be tightened. In addition, in addition to the plate width of the tip 11a gradually decreasing, since the long hole-shaped punched hole 17 is provided, the tip 11a is crushed in the thickness direction and formed into a tapered shape during the manufacturing process of the strip member 11. The area required for processing is small. For this reason,
The rolling process etc. for shaping the tip 11a is easy, and in addition to rolling, it is also possible to finish the tip 11a into a tapered shape by, for example, press forming.

The hose band 10 having the above configuration includes a band member 11
The protrusion 14 is fitted into the locking hole 13 after being wrapped around a surface to be tightened, such as a hose, with both ends open. Next, the tightening ear portion 15 is plastically deformed using a jig. As a result, the belt-shaped member 11 is pulled in a direction in which its diameter is reduced, so that the surface to be fastened can be fixed in a strongly fastened state.

When tightening, that is, when deforming the tightening ears 15, the inner overlapping portion and the outer overlapping portion of the band member 11 move relatively. Since the inner tip 11a has a tapered shape in the width direction and thickness direction, the tip 11a can easily slide onto the surface to be tightened, thereby preventing wrinkles from forming on the surface to be tightened. do not have. In addition, by providing the punched hole 17 along the longitudinal direction in the tip 11a, the tip 11a has a bifurcated shape, so this part has to be tightened in two parts, which further improves the sealing performance. improves.

Since the thickness of the inner end portion 11a has a tapered shape, there is no difference in level (see FIG. 5) in the inner overlapping portion as in conventional products. Therefore, excellent sealing performance can be obtained over the entire circumference.

Note that FIGS. 7 to 9 show other embodiments of the tightening ear portion 15. In this case, the main part 15
By being pressed from both sides in the board width direction, c is plastically deformed in advance so that the cross section in the width direction (FIG. 8) becomes approximately U-shaped. By deforming the main portion 15c into such a shape, rib-like portions 20 and 21 are formed on both sides of the main portion 15c, and the rib-like portions 20 and 21 are buckled to form a dowel-like portion. 22 occurs. Since the main portion 15c is thus reinforced, it can sufficiently withstand strong tightening forces. FIG. 9 shows a state in which the legs 15a, 15b are deformed by a jig during tightening.

Note that the punched hole 17 may have a single elongated shape as shown in FIGS. 10 to 13, or a plurality of punched holes 17 may be formed in the longitudinal direction as shown in FIGS. 14 and 15. You may also provide one. Further, as shown in FIGS. 16 to 18, a cutout hole 27 may be provided in place of the punched hole 17. In each of these examples, the tip portion 11a has a tapered shape in which the plate thickness on the tip side decreases.

Moreover, the hose band of the present invention can of course be used, for example, when fixing a bellows-shaped member such as a boot for a constant velocity joint.

〔Effect of the invention〕

According to the hose band of the present invention, the tip of the band-like member easily conforms to the surface to be tightened, and good sealing performance can be obtained over the entire circumference, and the tip has one or more punched holes or cutouts. By providing this, it becomes easy to taper the thickness of the tip end, and it is also possible to reduce the weight. In addition, since the tip is divided into multiple locations in the width direction and hits the surface to be tightened,
This is extremely effective in improving sealing performance.

[Brief explanation of drawings]

1 to 6 show one embodiment of the present invention, FIG. 1 is a front view of the hose band, FIG. 2 is a plan view showing the tip of the band member, and FIG. - A cross-sectional view along the line, Figure 4 is a cross-sectional view of the hose installed, Figure 5 is a plan view of the protrusion,
FIG. 6 is a front view of the protruding portion. FIG. 7 is a front view of a tightening ear showing another embodiment of the present invention, FIG. 8 is a sectional view taken along the line - in FIG. 7, and FIG. 9 is a modified version of the tightening ear shown in FIG. 10 to 18 are respectively plan views of the distal end portion showing other embodiments of the present invention. FIG. 19 is a sectional view showing a conventional hose band, and FIG. 20 is a sectional view showing still another conventional example. 10... Hose band, 11... Band-shaped member, 11a
...Tip portion, 13...Locking hole, 14...Protrusion, 15...Tightening ear portion, 17...Punching hole, 27...Notch hole.

Claims (1)

[Claims] 1. Consisting of a metal band member with both ends open,
This hose band is used by rolling this band-like member into a ring shape and overlapping both ends of the band-like member inside and outside of each other. a protrusion provided on the inner overlapping portion and engaging with the locking hole;
a tightening ear provided in a part of the longitudinal direction of the band-shaped member, and the shape of the tip of the inner overlapping portion is tapered such that the plate thickness on the tip side decreases; A hose band characterized in that one or more punched holes or notched holes are formed along the longitudinal direction in the section.