JP2872832B2 - Hose fixing jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for fixing a hose used for attaching a connection fitting to an end of a hydraulic hose.

[0002]

2. Description of the Related Art FIG. 8 is an exploded view showing a general fitting 4 (4a-4d) attached to an end 5a of a hydraulic hose 5. FIG.

[0003] The connection fitting 4 comprises a cap nut 4a, a sleeve 4
b, a nipple 4c, and a fitting body 4d,
To attach this to the hydraulic hose 5, first, the cap nut 4a and the sleeve 4b are inserted in this order from the end 5a of the hydraulic hose 5.

Then, the lower end of the nipple 4c is inserted into the inner peripheral surface of the hydraulic hose 5. At this time, the end 5a of the hydraulic hose 5 needs to be pushed outward by the nipple 4c. Since considerable force is required, the upper end surface of the nipple 4c must be hammered with a plastic hammer or the like while the hydraulic hose 5 is fixed.

Therefore, in order to hold the hydraulic hose 5 during the operation of inserting the nipple 4c, a hose fixing jig has been conventionally used. The conventional hose fixing jig includes a pair of plate-shaped fasteners for sandwiching and pressing the hydraulic hose 5, and the outer peripheral surface of the hydraulic hose 5 is provided substantially at the center of the facing surface of each fastener. A semicircular groove is provided substantially along the semicircle, and a pair of fasteners are connected to each other by a bolt with the hydraulic hose 5 fitted in the semicircular groove.

As a result, the hydraulic hose 5 and the hose fixing jig are integrated, so that the hose fixing jig is held and held with one hand, and the nipple 4c is hammered with the other hand to strike the nipple 4c. is there.

As described above, the nipple 4c can be inserted anywhere by using the hose fixing jig. However, holding the hose fixing jig manually requires labor. Therefore, when there is a vise at the work site, it is preferable to perform the work by fixing the hose fixing jig using the vise.

[0008] In the case where the hose fixing jig is sandwiched and fixed with a vice, a bolt for connecting the fastener is not required, and the work efficiency is improved, so that no bolt is used. Therefore, in the conventional hose fixing jig, a guide is provided for positioning the pair of fasteners so as not to be displaced from each other in a case where the hose fixing jig is sandwiched and fixed by a vice.

In the conventional guide, one fastener has a concave groove for engagement, and the other fastener has a convex portion fitted into the concave groove.
Each is provided and configured.

[0010]

Therefore, in the conventional hose fixing jig, the shape of the pair of fasteners is different from each other, and the manufacturing cost of the hose fixing jig is high.

That is, when the fastener is manufactured by molding such as casting, two types of molds are required,
Since two types of fasteners must be handled in the manufacturing process and the management process, much labor and labor are required.

Further, in the case where the concave groove and the convex portion are provided by mechanical processing, the processing requires a lot of time and labor. In addition, if a member for the guide is separately attached, the number of parts increases, and the cost increases, and the user of the hose fixing jig needs extra labor for management. .

In view of the above problems, the present invention easily forms a guide for fixing a hose fixing jig with a vice,
An object of the present invention is to provide a low-cost hose fixing jig without increasing the number of parts.

[0014]

A jig for fixing a hose according to the present invention comprises a pair of fasteners for sandwiching and pressing a hose in order to solve the above-mentioned problems. A semicircular groove is provided substantially at the center of the opposing surface facing the other fastener, and a semicircular groove is provided substantially along the semicircle of the outer peripheral surface of the hose, and a tightening bolt is provided on one side of the semicircular groove. On the other side, a through hole through which the shaft portion of the bolt is inserted is provided in the thickness direction of the fastener at a line symmetrical position with each other, and the through hole of the through hole is provided. A counterbore portion into which the head of the bolt fits is provided on the facing surface side.

[0015]

A pair of fasteners are connected to each other by screwing a bolt from the through hole into the screw hole of the other fastener.

Further, by screwing a bolt from the side of the opposing surface, when the opposing surfaces of the pair of fasteners are aligned with each other, the head of the bolt fits into the counterbore part of the fastener on the other side. Thereby, the positioning is performed so that they do not remain in a direction parallel to the facing surface.

[0017]

1 is a front view of a fastener 2 of a jig 1 for fixing a hose according to the present invention, FIG. 2 is a view of the fastener 2 of FIG. 1 as viewed from an arrow A, and FIG. 3 is a view of the fastener 2 of FIG. FIG. 4 is a sectional view when the hose fixing jig 1 is used by bolting, and FIG. 5 is a sectional view when the hose fixing jig 1 is used in a vise. FIG.
5 is a diagram corresponding to the line CC of the fastener 2 in FIG. 1.

As shown in FIGS. 4 and 5, the hose fixing jig 1 is composed of a pair of plate-shaped fasteners 2 and 2 for sandwiching and pressing a hose. It is used in a state where the respective opposing surfaces 8 face each other.

The pair of fasteners 2 are connected to each other by hexagonal bolts 3 for tightening as shown in FIG. 4 when they are used by bolting. As shown in FIG. 5, the heads 3a of the bolts 3 serve as guides for mutual positioning.

Referring to FIGS. 1 to 5, each of the fasteners 2 has a semicircular groove 11 substantially at the center of the facing surface 8 and substantially along the semicircle of the outer peripheral surface of various hoses such as hydraulic hoses. And a screw hole 12 screwed into the bolt 3 on one side of the semicircular groove 11 and a shaft 3b of the bolt 3 on the other side.
Are provided in the thickness direction of the fastener 2 at line-symmetric positions with respect to each other.

On the side of the facing surface 8 of the through hole 13 and on the side opposite to this, there are provided cylindrical counterbores 14 and 15 into which the head 3a of the bolt 3 is fitted with a margin. .

On the surface opposite to the facing surface 8, there are provided a holding surface 21 and a step portion 22 for holding and fixing with a vice. The counterbore part 14, as shown in FIG.
The depth of the head 3 a of the bolt 3 is such that the head 3 a is completely inserted into the screw hole 12 of the fastener 2 from the side of the facing surface 8 when the bolt 3 is screwed into the screw hole 12 of the fastener 2. 3a is fitted so that they serve as guides for positioning each other.

In this case, it is preferable from the viewpoint of use and appearance that the shaft 3b of the bolt 3 does not protrude from the screw hole 12, so that the shaft 3b is usually shorter than the length of the screw hole 12. Things are used.

When the bolt 3 is inserted from the side of the step portion 22 and screwed into the screw hole 12 of the fastener 2 on the mating side, the counterbore portion 15 allows the shaft portion 3 b having the above-described length to be sufficiently inserted into the screw hole 12. It is intended to be reached.

Next, a method of using the hose fixing jig 1 will be described with reference to FIGS. When there is no vise at the work site when attaching the connection fitting 4 to the hydraulic hose 5, as shown in FIG. 4, the semicircular grooves 11 of the pair of fasteners 2 With the outer peripheral surface sandwiched, the bolt 3 is inserted from the counterbore part 15 side and screwed into the screw hole 12 of the fastener 2 on the other side to be connected.

Then, as shown in FIG. 6, the jig 1 for fixing the hose is grasped and held by hand, and the nipple 4c is struck by the other hand while holding the hammer 6. In addition, when there is a vise 7 at the work site, as shown in FIG. 5, the bolts 3 are first screwed into the screw holes 12 of the respective fasteners 2 from the side of the facing surface 8. The opposing surfaces 8 are sandwiched by the semicircular grooves 11 so as to sandwich the outer peripheral surface of the hydraulic hose 5.
, The head 3a of the bolt 3 is fitted into the counterbore part 14 of the fastener 2 on the other side, and the positioning is performed.

Then, as shown in FIG. 7, the clamping surface 21 of the fastener 2 is clamped and fixed by a vice 7, and the nipple 4c is beaten by the hammer 6. According to the hose fixing jig 1 of the above-described embodiment, the bolt 3 for connecting the pair of fasteners 2 to each other is used as a guide for positioning each other when the vise 7 is used. As a result, the shape of the pair of fasteners 2 can be made the same, and there is no need to provide a projection, so that a simple shape that can be easily processed can be obtained. In addition, since the number of parts for the guide does not increase, it is possible to provide the hose fixing jig 1 at low cost.

In the above-described embodiment, a plurality of semicircular grooves having different curvatures may be provided on the facing surface 8 in order to accommodate a plurality of hydraulic hoses 5 having different diameters. The cross-sectional shape of the semicircular groove 11 can be various shapes such as an ellipse, a polygon, and a V-shape, which are substantially along the outer peripheral surface of the hose used. The hose fixing jig according to the present invention can be used to fix various hoses other than the hydraulic hose 5.

[0029]

According to the present invention, a guide for fixing a hose fixing jig with a vise can be easily formed, and a low-cost hose fixing jig can be provided without increasing the number of parts. Can be.

[Brief description of the drawings]

FIG. 1 is a front view of a fastener of a jig for fixing a hose according to the present invention.

FIG. 2 is a view on arrow A of the fastener of FIG. 1;

FIG. 3 is a view on arrow B of the fastener of FIG. 1;

FIG. 4 is a sectional view when the hose fixing jig is used by bolting.

FIG. 5 is a cross-sectional view of the hose fixing jig when the vise is used.

FIG. 6 is a diagram showing a use state when the hose fixing jig is used by bolting.

FIG. 7 is a diagram illustrating a use state of the hose fixing jig when the vise is used.

FIG. 8 is an exploded view showing a general connection fitting attached to an end of a hydraulic hose.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Jig for fixing a hose 2 Fastener 3 Bolt 3a Head 3b Shaft 5 Hydraulic hose (hose) 8 Opposite surface 11 Semicircular groove 12 Screw hole 13 Through hole 14 Counterbore

Claims (1)

(57) [Claims] 1. A pair of fasteners for sandwiching and pressing a hose, each of the fasteners having a half-periphery of an outer peripheral surface of the hose at a substantially central portion of a facing surface facing the other fastener. A semi-circular groove is provided along the semi-circular groove. On one side of the semi-circular groove, there is provided a screw hole to be screwed into a bolt for tightening, and on the other side, a shaft portion of the bolt is inserted. Holes are provided in the thickness direction of the fastener at line-symmetric positions with respect to each other, and a counterbore portion into which the head of the bolt fits is provided on the facing surface side of the through hole. A jig for fixing a hose.