JP2002172080A - Washing nozzle pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing nozzle pipe which is prevented from being heavy in weight, laborious in forming, and requiring high cost caused by female screw working of a metal forming material of a cast nozzle body and requiring a metal pipe with large wall thickness for screw hole working of the metal pipe to be attached with a nozzle tip. SOLUTION: This washing nozzle pipe comprises a nozzle body which is integrally molded with one of a pair of hand pieces molded into an arc shape by molding of plastic by a mold and has a tip end part in the jet side projected to the outer periphery of the hand piece and the rear end part in the washing water inlet side is projected to the inner periphery of the hand piece, and a nozzle pipe with a prescribed number of mounting holes at prescribed intervals along the longitudinal direction. The nozzle pipe is fit in between the inner periphery parts of a pair of hand pieces. The rear end part of the nozzle body is fit into the mounting holes and the circumference of the base end part sealed by a sealing material. The one pair of hand piece is connected by connecting parts equipped on the abutting end parts of both ends thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine which is mainly installed above or below a tableware conveying conveyor or a tableware storage rack pedestal and sprays washing water onto the tableware to be cleaned on the conveyor or rack to wash the tableware. The present invention relates to a washing nozzle pipe used for a dishwasher and the like.

[0002]

2. Description of the Related Art In a conventional cleaning nozzle pipe, a screw hole (tap) is formed at a predetermined interval in a metal pipe, and a female screw portion having a metal nozzle body formed at an attachment end thereof is screwed into the screw hole of the pipe. What is attached with is known.

[0003]

In the above-mentioned conventional cleaning nozzle pipe, since a female thread is formed on a metal forming material of a nozzle body formed by casting, it takes much time and effort to manufacture, and the nozzle body is mounted. Since a threaded hole is formed in the metal pipe, a thick metal pipe is required, which causes a problem that the weight becomes heavy, the molding is troublesome, and the cost is increased.

Further, a groove is formed on the tip end surface of the nozzle body so that the cleaning water spreads in a fan shape and is sprayed, and the groove does not interfere with the cleaning water sprayed in a fan shape from the adjacent nozzle body. Although it is attached so as to be inclined with respect to the axial direction of the nozzle pipe (see FIG. 1), in the conventional screw-in type nozzle body, when this is screwed into the screw hole of the nozzle pipe and tightened and fixed, each It was difficult to fix the nozzle body by aligning the inclination direction of the groove of the nozzle body in a fixed direction (it is difficult to process each screw hole and the screw portion of the nozzle body uniformly).

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the present invention is to integrally form one of a pair of band pieces formed into an arc shape by a molding process using a plastic mold, and to perform injection. The front end of the side is protruded from the outer periphery of the band piece, and the rear end of the washing water introduction side is provided with a nozzle body protruded from the inner periphery of the band piece, and a required number of the nozzles at predetermined intervals along the longitudinal direction. It consists of a nozzle pipe with a mounting hole, the nozzle pipe is fitted between the inner circumferences of a pair of band pieces, and the rear end of the nozzle body is inserted into the mounting hole and seals around the base end The present invention proposes a cleaning nozzle pipe which is sealed with a material, and in which a pair of band pieces are connected by connecting portions provided at abutting ends of both ends thereof.

According to the present invention, a plastic band is formed integrally with an annular band piece whose one portion is cut off, and a front end portion on the injection side is protruded from an outer periphery of a mounting band, and the cleaning water is formed. The rear end of the introduction side is composed of a nozzle body that is shortly protruding from the inner periphery of the mounting band, and a nozzle pipe with the required number of mounting holes at predetermined intervals along the longitudinal direction. The cut end is opened and fitted into the nozzle pipe, the rear end of the nozzle body is inserted into the mounting hole and the base end is sealed around with a sealing material, and the band piece is separated from the cut end. The present invention proposes a cleaning nozzle pipe formed by connecting connecting portions provided in the sections.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS While inserting the rear end of a plastic nozzle body into a mounting hole formed in the nozzle pipe, the nozzle pipe is fitted into the inner peripheral part of one of the band pieces formed integrally with the nozzle body. In this state, the other band piece is applied to the nozzle pipe on its inner peripheral surface, and the butted ends of the band pieces are connected and integrated at the connecting portions provided respectively, and the rear end of the nozzle body is attached. By inserting the nozzle body into the hole and sealing around the base end thereof with a sealing material, the nozzle body can be integrally formed by plastic molding without screwing the nozzle body, and can be manufactured at low cost.

Further, since the nozzle pipe need only be formed by drilling a metal pipe, a thin-walled pipe can be used, so that the weight and cost of the nozzle pipe can be reduced. The ring groove for O-ring fitting formed at the end can be formed at low cost by simple press working.

Further, by simply fastening and fixing the pair of band pieces to the nozzle pipe, each nozzle body can be mounted with the inclination direction of the groove at the tip thereof aligned in a certain direction.

[0010]

1 to 5 show a first embodiment of the present invention, in which a nozzle body 1 is formed by a pair of band pieces 2a, 2a formed into an arc shape by a molding process using a plastic mold.
b is integrally formed with one of the two pieces 2a, and the front end 1a on the injection side protrudes from the outer circumference of the mounting band 2, and the rear end 1b on the cleaning water introduction side protrudes shortly on the inner circumference of the band piece 2a. It is established.

An annular ring groove 3 having a semicircular cross section is formed in the band piece 2a at the base outer periphery of the rear end of the nozzle body 1 and a sealing material 4 such as an O-ring is fitted therein. ing.

The band pieces 2a, 2b are formed into an annular shape by abutting their both ends to each other, and bracket-shaped connecting portions 5a, 5b projecting to the outer peripheral side are formed at one butting end. The connecting portions 5a and 5b are fastened by being screwed into the through-holes 6a and the screw holes 6b provided therein and through the fastening screws 7, thereby connecting and fixing them.

A pin-shaped connecting portion 8a is provided at one end of the other butted ends of the band pieces 2a and 2b, and a U-shaped groove-shaped connecting portion 8b is provided at the other end. It is designed to be freely and detachably and rotatably connected.

The pin-shaped connecting portion 8a has its middle portion supported by the support plate 9 and protrudes from the left and right thereof. The groove-shaped connecting portion 8b has a gap corresponding to the left and right width of the support plate 9. Are formed on the left and right.

In this embodiment, the connecting portions 5a, 5a
Although the fastening screw 7 screwed into the screw hole 6b through the through hole 6a was used as the connecting means of the band piece 5b, the band pieces 2a, 2
Other connecting means may be used as long as the butting ends of b are fastened and connected and fixed.

Similarly, as connecting portions 8a and 8b, pins and U
Not only the groove but also other connecting means may be used as long as the connecting ends of the band pieces 2a and 2b are connected or fixedly fixed (for example, a hook-shaped connecting portion or a hook-shaped connecting portion engaging with each other). Fastening screws 7 in the same manner as the connecting portions 5a and 5b
It is possible to use a means such as one that is connected and fixed by the above).

As shown in FIG. 1, a groove 1 is formed in the nozzle body 1 so that the cleaning water spreads in a fan shape on the tip end surface and is sprayed.
0 is formed, and this groove 10 is inclined with respect to the axial direction of the nozzle pipe 11 so that the cleaning water fan-sprayed from each nozzle body 1 attached to the nozzle pipe 11 does not interfere with each other. The formed embodiment shown in FIG. 6 shows the second embodiment of the present invention, and the band piece 2 of this embodiment has one portion cut off by molding of a synthetic resin having soft elasticity. The nozzle pipe 11 is formed integrally in an annular shape, whereby the cut-off end portion is largely opened, and the nozzle pipe 11 can be fitted from this portion to the inner peripheral portion.

At the cut-off end of the band piece 2, bracket-like connecting portions 5a and 5b projecting to the outer peripheral side are provided similarly to the first embodiment, and are fastened to through holes 6a and screw holes 6b formed in them. By screwing through the screw 7, the connecting portions 5a and 5b are fastened and connected and fixed.

Nozzle pipe 11 for mounting nozzle body 1
A thin metal pipe is used, and a required number of mounting holes 12 are formed at predetermined intervals along the longitudinal direction. A rear end portion 1b of the nozzle body of one band piece 2a is inserted into the mounting hole 12. While being inserted, the band piece 2a is applied to the inner peripheral surface thereof, and in this state, the other band piece 2b is applied to the nozzle pipe 11 at the inner peripheral surface thereof, and the butted ends of the mutual band pieces 2a and 2b are connected to each other. The nozzle body 1 can be easily attached to the nozzle pipe 11 by connecting and fastening at the connection portions 5a and 5b and the connection portions 8a and 8b.

At this time, the periphery of the base end of the rear end 1b of the nozzle body 1 is sealed with a sealing material 4 such as an O-ring previously mounted in the annular ring groove 3.

When the required number of nozzle bodies 1 are attached in this manner, the grooves 11 on the distal end surface of each nozzle body 1 are surely aligned at a certain angle with respect to the axial direction of the nozzle pipe. .

A ring groove 13 is formed on the outer periphery of the rear end of the nozzle pipe 11 by drawing.
The rear end is inserted and connected to a water supply pipe (not shown) for washing water, and sealed by an O-ring 13.

[0023]

As described above, according to the present invention, the nozzle main body can be integrally formed by plastic molding without screwing the nozzle main body, so that it can be manufactured at low cost.

Further, since it is only necessary to make a hole in the metal pipe, a thin pipe can be used, so that the weight and cost of the nozzle pipe can be reduced, and the nozzle pipe can be formed at the pipe end. O-ring fitting ring grooves can be formed at low cost by simple press working.

Further, by simply fastening and fixing the pair of band pieces to the nozzle pipe, each nozzle body can be mounted with the inclination direction of the groove at the tip thereof aligned in a certain direction.

[Brief description of the drawings]

FIG. 1 is a plan view in which a part of a nozzle pipe of the present invention is cut away.

FIG. 2 is a front view showing a configuration of a nozzle body and a band piece thereof according to the present invention.

FIG. 3 is a front view showing a state in which the band piece and the nozzle body according to the present invention are being mounted on a nozzle pipe.

FIG. 4 is a longitudinal sectional front view showing a state in which a nozzle body according to the present invention and a mounting band thereof are mounted on a nozzle pipe.

FIG. 5 is a rear view showing the configuration of a nozzle body and a band piece thereof according to the present invention.

FIG. 6 is a front view showing another embodiment of the nozzle body and the band piece according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nozzle main body 1a Tip part 1b Rear end part 2 Band piece 2a Band piece 2b Band piece 3 Ring groove 4 Seal material 5a Connection part 5b Connection part 6a Through hole 6b Screw hole 7 Fastening screw 8a Connection part 8b Connection part 9 Support plate 11 Nozzle pipe 12 Mounting hole 13 Ring groove 14 O-ring

Claims (2)

[Claims] 1. A pair of band pieces formed in an arc shape by a molding process using a plastic mold, and are integrally formed with one of the pair of band pieces. The rear end of the side comprises a nozzle body protruding from the inner peripheral portion of the band piece, and a nozzle pipe having a required number of mounting holes at predetermined intervals along the longitudinal direction, and the nozzle pipe is A pair of band pieces are fitted between inner peripheral portions, a rear end of the nozzle main body is inserted into the mounting hole, and a base material around the base end is sealed with a sealing material. A cleaning nozzle pipe which is connected by connecting portions provided at the butted ends of both ends thereof. 2. A molding process using a plastic mold is performed so as to be integrally formed with an annular band piece whose one portion is cut off. The rear end is composed of a nozzle body projecting shortly on the inner periphery of the mounting band, and a nozzle pipe having the required number of mounting holes at predetermined intervals along the longitudinal direction. The part is opened and fitted into the nozzle pipe, the rear end of the nozzle body is inserted into the mounting hole and the base end is sealed around with a sealing material, and the band piece is attached to the separated end. A washing nozzle pipe characterized by connecting the provided connecting portions.