JP2000176394A - Top-guiding metal fitting of hose used for cleaning pipe inside - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow part between a top piece and a jet nozzle to move continuously to thereby simplify guiding operation by stringing a wire between the top piece and the jet nozzle and passing the wire through a plurality of pieces so as to link them in a row to form a top-guiding metal fitting. SOLUTION: This metal fitting 10 comprises a plurality of pieces 3 liked to each other in a row with a wire 4 and connected to a top piece 1 at the one end and to a jet nozzle 2 at the other end. Each pieces 3 has an attaching hole 31 bored through the center, the end of the hole having been subjected to chamfering 32. Bothends 41, 42 of the wire 4 having the pieces 3 linked in a row are connected and fixed to the jet nozzle 1 and to the top piece 1 by caulking means or the like. The guiding angle and rigidity or flexibility, (i.e., easiness in bending) of the metal fitting 10 is determined by the gaps between the pieces 3, the clearance around the wire 4 inserted through the center hole 31, the curvature of chamfer at the end of the center hole, the length of the wire, etc. Thus, excellent bending characteristics and a good operability are attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leading end fitting for a hose having a washing nozzle at a leading end for cleaning the inside of a drain pipe of a building such as a building, an apartment or a factory, and connecting the leading end fitting to a ball. The present invention relates to a tip guide fitting capable of turning in a two-dimensional or three-dimensional direction by using a wire.

[0002]

2. Description of the Related Art (I) A tip guide fitting 10 'is formed by connecting a plurality of connecting pieces 3', 3 'between a tip piece 1' and an injection nozzle 2 '. Is as follows. Injection nozzle 2 'and joining piece 3'
In this connection, the opening end 31 'of the cylindrical portion 31' of the bridge 3 'is crimped inward to the spherical portion 21' of the injection nozzle 2 '. The pieces are joined by caulking the ball end 32 'of one piece with the open end 31' of the cylindrical part 31 'of the other piece inward. The joining of the piece 3 'to be joined to the tip piece 1' was performed by caulking the ball terminal 32 'of the joining piece 3' with the opening end 31 'of the cylindrical portion 11' of the tip piece 1 'inward. (II) As shown in FIG. 5, when the piece 3 '(1', 2 ') and the piece 3' are joined, the ball portion 32 'is connected to the cylindrical portion 31' (11 ', 2').
1 ') and joined by pins 33'.
(See FIG. 6) (Part III) As shown in FIG. 7, the tip guide metal fitting 10 'is formed by connecting the tip piece 1' and the injection nozzle 2 'with a spiral spring 4'.

[0003]

Among the conventional guide metal fittings, the caulking type shown in FIG. 5 and the pin type shown in FIG. 6 both move independently between the pieces. There was no continuity in the operation between the tip piece 1 'and the injection nozzle 2', and there was no simplicity in the guidance operation. In the case of the spiral spring type shown in FIG. 7, the spiral spring, the tip piece 1 'and the injection nozzle 2' are repeatedly used.
There is a disadvantage that the joints are separated.

[0004]

According to the present invention, a plurality of pieces connected to a tip piece and an ejection nozzle are connected by inserting a plurality of pieces in a rosary shape through a wire stretched between the tip piece and the ejection nozzle. It is a tip guide fitting formed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below. [I] As shown in FIG. 1, the tip guide fitting 10 has a structure in which a plurality of pieces 3 and 3 are connected between a tip piece 1 and an injection nozzle 2 via wires 4. Each of the plurality of pieces 3 and 3 is formed in a spherical shape, and each of the pieces is provided with a mounting hole 31 penetrating the center and a chamfer 32 having a predetermined curvature at an opening end of the center hole. . Both ends 41, 4 of the wire 4 holding the plurality of pieces 3, 3 in a rosary shape
Numeral 2 is connected and fixed to the injection nozzle 2 and the tip piece 1 by caulking means or the like. The tip guide fitting 10 thus formed has a gap r between the connecting pieces 3 and 3, a clearance C between the wires 4 inserted into the center hole 31, a chamfer curvature of an opening end of the center hole, a wire length, and the like. Thereby, the size of the guide angle of the metal fitting and the hardness of the bending ease can be determined.

[II] As shown in FIG. 2, a tip guide fitting 10 has a structure in which a plurality of pieces 3, 3 and a tip connection piece 5 are connected between a tip piece 1 and an injection nozzle 2 via a wire 4. ing. In addition, the guide fitting 10 is configured such that the convex portion 33 of the other piece 3 is engaged with the concave groove 34 formed in the one piece 3, so that angular displacement within the same plane is allowed. The specific shape of the piece 3 will be described with reference to FIG. The piece 3 is formed as a cylindrical body having a body portion. A convex portion 33 having a substantially rectangular cross section with a width n is formed at one end of the cylindrical body, and a concave groove 34 having a substantially rectangular cross section with a width m is formed at the other end. > N, and a wire 4
Is formed in the center hole 31 for inserting the through hole. The tip connecting piece 5 is formed in a shape having only the concave groove 34 of the piece 3. Further, the surfaces in the longitudinal direction of the convex portion and the concave groove are formed so as to be present on the same plane.

[III] As shown in FIG. 4, the plurality of pieces 3, 3 forming the tip guide fitting 10 are different from the pieces 3 described in Embodiment II in the basic configuration.
The connecting pieces 6, 7, and 6 are formed as follows. As shown in the drawing, each of the pieces 6 and 7 has the convex portion 3.
3 and the longitudinal surface of the recess are formed so as to be orthogonal to each other. With this configuration, vertical rotation between the frame 6 and the frame 7 and horizontal rotation between the frame 7 and the next frame 6 are allowed. Can rotate vertically and horizontally, and as a result, can rotate 360 degrees. The width in the longitudinal direction s> n and the length in the longitudinal direction L> K.

The present invention is not limited to the above embodiment. For example, the shape of the wire or the piece can be arbitrarily designed in addition to stainless steel, and the size of the tip piece and other pieces can be changed as necessary. It is possible to arbitrarily design such as selecting and using or changing the number of sizes and shapes between pieces.

[0009]

According to the present invention, a plurality of pieces are connected between the tip piece and the injection nozzle via a wire having elasticity and rigidity, and the bending property is excellent and the operability is good. In addition, according to the present invention, processing and assembling can be performed easily even when the shape of the piece is spherical, or when the projections and the grooves are formed. Further, according to the present invention, since the end of the wire can be formed on the tip piece and the injection nozzle by means of caulking from two directions, the processing is easy, and furthermore, the wire can be firmly and securely fixed. Do not cause the tip guide fitting to be left inside the pipe.

Also, in the present invention, the bending angle of the tip guide metal is normally set to 90 degrees, but this set angle can be arbitrarily adjusted by adjusting the length of the wire between the tip piece and the injection nozzle. Yes, and by selecting the shape of the piece, it is possible to freely perform a 360-degree turn and a vertical and horizontal 180-degree turn.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of an embodiment.

FIG. 2 is a sectional view of a main part of another embodiment.

FIG. 3 is an explanatory view of a piece of another embodiment.

FIG. 4 is an explanatory diagram of a piece of another embodiment.

FIG. 5 is a sectional view of a main part of a conventional example.

FIG. 6 is a sectional view of a main part of a conventional example.

FIG. 7 is a sectional view of a main part of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Tip guide metal 1 Tip piece 2 Injection nozzle 3 piece 31 Mounting hole 33 Convex part 34 Depression groove 4 Wire 41 (42) Wire end 5 Tip connection piece 6 (7) piece

Claims (4)

[Claims] 1. A tip guide metal fitting comprising: a wire stretched between a tip piece and an injection nozzle; and a plurality of pieces connected to the wire in a rosary shape. 2. A tip guide fitting wherein the piece according to claim 1 is spherical. 3. The frame according to claim 1, wherein the piece is formed by a convex portion and a concave groove engaged with the convex portion, and the surface in the longitudinal direction of the convex portion and the concave groove is present in a plane around the circumference. A tip guide fitting characterized by the following. 4. The frame according to claim 1, wherein the piece is formed by a convex portion and a concave groove engaged with the convex portion, and furthermore, the convex portion and the longitudinal surface of the concave groove are each orthogonal to each other. A tip guide fitting characterized by the following: