JPH0719382A - Hose joint device and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a hose joint device which has excellent corrosion resistance and mechanical strength and which does not spoil its beauty. CONSTITUTION:At the rear end part of a joint member 1 which forms a joint device, a component part of a female joint member A where a joint ring 2 provided with a chuck ring 51 in it is screwed, and a male joint member 13 provided with an operation ring 51 at a tubular body 50 so as to slide is formed by applying roll forming or drawing to a stainless steel pipe and a stainless steel plate as necessary, forming threads, and copper-brazing them mutually.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present application relates to a hose coupling device for water discharge or suction, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, a joint device for a hose for discharging water or suction has a female joint member and a male joint member,
The female joint member has a non-slip portion having a serrated cross section formed on the outer peripheral surface thereof, an insertion cylinder for connecting the mouth portion of the water discharge hose, which is erected at the center of the upper surface, and is provided with a screw on the outer periphery. A connection member integrally having a threaded connection portion having a diameter smaller than that of the insertion tube and having a groove for fitting a packing in the upper part of the circumference, and the threaded connection portion is screwed into the inner circumference. A connection ring, which is screwed and has a cushion ring made of rubber or the like fitted on the outer periphery and a connection port formed by an inward rib on the lower surface, is housed in the connection ring, and the connection member is screw-connected to the connection ring. In this state, the chuck ring is sandwiched between the lower surface of the connecting ring and the lower surface of the connecting member to sandwich the front portion of the cylindrical body of the male joint member described below, and the male joint member is connected to the hose mouth. A non-slip part similar to the above is formed on the outer periphery of the lower half of the The retaining ring is engaged with the outer periphery of the intermediate position, and the upper end is made thick to make the outer diameter wide, and an outward flange is provided at the lower edge between the wide diameter portion and the retaining ring. The operation ring is slidably fitted in the axial direction, and the cylindrical front portion of the male joint member is fitted and inserted from the connection port on the rear surface of the female joint member to thereby form the operation ring and the wide diameter portion. The locking piece of the chuck ring is locked to the concave surface formed between the two to connect the male joint member and the female joint member, and in this state, the operation ring is pressed in the axial direction,
The male joint member and the female joint member are separated by releasing the locked state between the chuck ring and the concave surface.

[0003]

However, in both the male joint member and the female joint member of the above-mentioned conventional construction, all the components except the packing and the buffer ring are formed by cutting the metal casting or aluminum casting. Since it is produced by that, there is a lot of waste of material, especially with difficulty in casting work due to toxic gas generated when casting gunmetal, and not only labor is required, but also weak corrosion resistance, In addition, since the weight is relatively heavy, it is inconvenient to handle, and when it is manufactured from an aluminum casting, it has a difficulty in cutting due to the properties of aluminum, and it is weak in mechanical strength. There has been a problem that the front end of the operating ring, which is operated with a strong force to release the connection with the joint member, is worn and cannot withstand long-term use.

[0004]

Therefore, in order to solve the above-mentioned disadvantages of the conventional ones, the present application manufactures all components other than the packing and the buffer ring in both joint members from a stainless pipe and a stainless plate. The feature is that the lower end portion of the connecting member connected to the hose mouth is provided with a chuck ring inside, and the insertion of the male joint member cylinder described later is allowed. At the same time, the female joint member in which a connection ring for sandwiching the tubular body by a chuck ring is screwed and connected, and the tubular body in which the lower portion is connected to the mouth of the water discharge hose and the upper portion is sandwiched by the female joint member, A coupling device for a hose, comprising a male joint member slidably provided with an operation ring for releasing the wearing state, wherein the connecting member is formed with an anti-slip portion on an outer periphery of an upper portion connected to a mouth portion of the hose. And insertion tube made of stainless,
An opening is provided in the center, the lower end of the insertion tube is fitted into the opening, and a mounting piece made of stainless steel having a fitting rib on the outer periphery and an outer periphery of the upper end of the fitting rib are provided. Fitted,
Further, the rear end is provided with an inward receiving rib, a groove is formed in the inner periphery, packing is fitted into the groove, and a screwing piece made of stainless is provided on the outer periphery. The connecting ring is made of stainless steel having a protrusion on the outer circumference of the upper end and a screw for screwing with the screwing piece on the inner circumference, and is made of stainless steel having a connecting port at the center at the lower end of the ring body. The end piece is fixed so that its outer peripheral edge slightly protrudes from the outer peripheral surface of the ring body, and a buffer ring is fitted between the protrusion and the outer peripheral edge of the end piece. The male joint member is formed with a non-slip portion on the outer periphery of the lower half portion connected to the hose mouth, and a stop ring is engaged with the outer periphery at the intermediate position in the longitudinal direction, and a short stainless steel is provided on the outer periphery of the upper end portion. A cylinder made of stainless steel with a reinforcing ring made of Between the reinforcing ring and the stop ring and is characterized by being configured fitted slidably in the axial direction operation ring made of stainless steel having a flange outwardly at the lower end.

As a manufacturing method, the connecting member is
An insertion tube made of a stainless steel pipe having a non-slip portion formed by roll-forming the upper part connected to the hose mouth and a stainless steel plate is drawn to the lower end of the insertion tube at the center. And an attachment part with a fitting rib on the outer circumference and a receiving rib bent inward on the lower edge of the body by drawing a stainless steel plate. A screw part provided with a screw and a cutout respectively, and a stainless steel plate are drawn to be fitted into a corner part formed by the inner surface of the mounting part piece and the inner surface of the screw part. A ring and an auxiliary ring made of a stainless steel plate that is superposed on the upper surface of the receiving rib, and the lower end of the insertion tube is fitted into the opening of the mounting piece, and the fitting rib is fitted into the notch. The inner ring of the mounting part and the inner surface of the threaded part. With the auxiliary ring on the upper surface of the receiving rib, and the fitting portion and the overlapped portion are brazed together, and a packing is fitted between the auxiliary ring and the inner ring. A stainless steel pipe is drawn to form a connecting ring, the upper edge of which is bent outward to provide a ridge, and a screw which is screwed to the screwing piece on the inner circumference. An end piece made of a stainless steel plate having a connection hole formed in the center is abutted on the lower end of the ring body provided with the abutting member such that the outer peripheral edge thereof slightly protrudes from the outer peripheral surface of the ring body. The male joint member is produced by brazing the contact portion, and the lower portion fitted into the hose mouth portion is roll-formed to form the non-slip portion of the serrated cross section, and the outer periphery of the intermediate position in the longitudinal direction. Made of stainless steel pipe with engaging groove The upper end outer periphery of the cylindrical body, brazing the fitting portion fitted reinforcing ribs made of short stainless steel pipe, and the lower part of the cylindrical body,
It was manufactured by drawing a stainless steel pipe, fitting an operation ring integrally having an outward flange at its lower end slidably in the axial direction, and then engaging a stop ring with the engaging groove. And preferably brazing is barrel brazing.

[0006]

When the upper portion of the female joint member having the water discharge hose connected to the lower portion of the cylinder is strongly inserted from the connection port of the female joint member having the water discharge hose connected to the insertion tube, as in the conventional case,
The upper part is clamped by the chuck ring to achieve the connection between the joint members. When the connection between the joint members is released, the operation ring is strongly pressed in the axial direction. Then, this activates the chuck ring to release the connected state, so that the joint members can be separated from each other.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present application will be described in detail below with reference to the drawings. A female joint member A includes a connecting member 1 for connecting a mouth portion of a hose C and a connecting ring screwed to a lower end portion of the connecting member 1. 2 and a known chuck ring 3 which is sandwiched between the connecting member 1 and the connecting ring 2 to sandwich the male joint member B therebetween.

As shown in FIGS. 2 and 3, the connecting member 1 is formed by roll-forming a stainless steel pipe, and an insertion tube 10 in which a bottom end 10a is left and a non-slip portion 10b having a serrated cross section is formed. An opening 11a for drawing the plate and fitting the lower end 10a of the insertion tube 10 in the center
Also, the mounting rib 11 having the fitting ribs 11b on the outer periphery thereof and the receiving rib 1 for forming the center hole 12b by inwardly bending at the lower edge of the body 12a by drawing the testless plate.
2c is provided, a screw 12d is provided on the outer periphery, and a threaded portion 12 is provided with a notch 12e for fitting the fitting rib 11b.
2 and an inner surface of the body portion 12a, the inner ring 13 having an L-shaped cross section that fits into a corner portion, and a stainless steel plate are superposed on the upper surface of the receiving rib 12c.
The thickness of the receiving ribs 12b is adjusted, and the auxiliary ring 14 is formed so that the center holes thereof coincide with each other.
The lower end 10a of the insertion tube 10 is fitted to the fitting ring 11
b is fitted in the cutout portion 12e of the threaded portion 12, and the inner ring 13 is fitted in the corner portion formed by the inner surface of the mounting portion 12 and the inner surface of the body portion 12a. It is manufactured by copper brazing at each position of a, b, and c in a state where the auxiliary ring 14 is superposed on the upper surface of.

As shown in FIGS. 4 and 5, the connecting ring 2 is formed by bending the upper edge of the stainless pipe outward so as to project the ridge 20a.
And an outer diameter equal to the outer diameter of the ridge portion 20a at the lower end of the ring body 20 having a screw 20b and a groove 20c for screwing together with the screw portion 12 on the inner periphery thereof, and A connection port 21a having a diameter smaller than the inner diameter of the ring body 20 is provided in the central portion.
And the end piece 21 made of a stainless plate having a paragraph 21b along the outer periphery of the upper surface is abutted, and the abutting portion is brazed with copper at the position d, and A cushioning ring 22 made of rubber is fitted between the portion 20a and the outer peripheral portion of the end piece 21.

As is well known, the chuck ring 3 engages a plurality of notches 31 provided in the holding ring 30 with respective arcuate locking pieces 32, and has a spring 33 on the outer periphery thereof.
The chuck ring 3 is embodied so as to be movable in the centrifugal direction, and the chuck ring 3 has the receiving rib 12 of the threaded portion 12 in a state in which the connecting member 1 is threadedly connected to the connecting ring 2.
It is clamped between c and the end piece 21.

As shown in FIGS. 6 and 7, the male member B is formed by roll-forming a stainless steel pipe so that the lower half portion connected to the mouth portion of the hose C has a serrated section 50a having a serrated cross section.
And a groove 50b for engaging the retaining ring 6 in the outer periphery at the center position in the longitudinal direction, and a reinforcing ring 7 made of a short stainless pipe is brazed to the outer periphery of the upper end portion by copper brazing at the position e. 50 and the lower part of the stainless steel pipe are bent outward to integrally provide the brim 51a, and
1b is loosely fitted to the outer periphery of the upper half of the cylindrical body 50 and is composed of an operation ring 51 slidable between the stop ring 6 and the reinforcing ring 7.

As in the conventional case, however, the male joint in which the mouth of the hose C is connected to the lower portion of the tubular body 50 from the connection port 21a of the female joint member a in which the mouth of the hose C is connected to the insertion tube 10. When the upper part of the member B is strongly inserted, the locking piece 32 of the chuck ring 3 temporarily moves in the centrifugal direction against the spring 33 by the reinforcing ring 7, and the upper surface of the cylindrical body 50 or the lower surface of the receiving rib 12c. After allowing the reinforcement ring 7 to come in contact with the female joint member, the locking piece 32 is restored to engage between the reinforcement ring 7 and the operation ring 51 as shown by the phantom line in FIG. The connection between A and the male joint member B is performed, and the connection between the hoses C is achieved.

With the female joint member A and the male joint member B connected, when the operating ring 51 is strongly pressed in the axial direction by using the collar 51a, the locking piece of the chuck ring 3 is locked by the body portion 51b of the operating ring 51. 32 is spring 33 again
Since it moves in the centrifugal direction against, the male joint member B can be pulled out from the female joint member A in this state.

The above-mentioned connection between the female joint member A and the male joint member B and the releasing action thereof are performed by the female joint member A and the male joint member B in the present application, which are conventionally known female joint members and male joint members. Moreover, since the standard dimensions are made equal, it is possible to connect the male joint member of the conventional configuration to the female joint member A in the present application and the female joint member of the conventional configuration to the male joint member B in the present application.

[0015]

As described above, according to the present invention, the whole structure except the packing and the buffer ring is made of stainless steel.
It has excellent corrosion resistance and mechanical strength, does not lose its aesthetic appearance over a long period of time, and has a merit that it has less waste of material and is excellent in workability because the cutting process is exclusively performed on the screw portion.

[Brief description of drawings]

FIG. 1 is an overall side view showing a connected state.

FIG. 2 is a side view of the connecting member in a half-cut state.

FIG. 3 is a plan view of a connecting member.

FIG. 4 is a plan view of a connection ring.

FIG. 5 is a side view of the connecting ring in a semi-removed state.

FIG. 6 is a side view of the female joint member in a semi-slit state.

FIG. 7 is a plan view of the male joint member.

[Explanation of symbols]

 A Female joint member B Male joint member 1 Connection member 2 Connection ring 3 Chuck ring 6 Stop ring 7 Reinforcement ring 10b Non-slip part 10 Insertion cylinder 11a Opening 11b Fitting rib 11 Attachment part 12a Body part 12b Center hole 12c Receiving Rib 12d Screw 12 Threaded part 13 Inner ring 14 Auxiliary ring 20a Projection 20b Screw 20 Ring body 21a Connection port 21 End piece 22 Buffer ring 30 Holding ring 32 Locking piece 33 Spring 50a Sliding part 50b Groove 50 Tube Body 51a Tsuba 51b Body 51 Operation ring

Claims (7)

[Claims] 1. A chuck ring is provided inside a lower end portion of a connecting member connected to a hose opening to allow insertion of a cylindrical body of a male joint member, which will be described later, and to clamp the cylindrical body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In a joint device for a hose, which comprises a male joint member provided in the above, the connecting member comprises an insertion cylinder made of stainless steel having a non-slip portion formed on an outer periphery of an upper portion to be connected to a hose mouth, and an opening portion at a central portion. And a lower end portion of the insertion tube is fitted to the fitting portion, and a mounting portion piece made of stainless steel having a fitting rib on the outer periphery is fitted, and an outer circumference of the upper end portion is fitted to the fitting rib, and , With an inward receiving rib on the rear end and a groove on the inner circumference And a packing is fitted to this, and the screw is formed on the outer circumference of the threaded portion made of stainless steel.The connecting ring is provided with a ridge on the outer circumference of the upper end and the thread on the inner circumference. At the lower end of the ring body made of stainless steel, which is provided with a screw to be screwed with the mating piece, an end piece made of stainless steel having a connection opening at the center is formed so that its outer peripheral edge slightly protrudes from the outer peripheral surface of the ring body. The hose coupling device is characterized in that it is fixed to the ridge and a buffer ring is fitted between the ridge and the outer peripheral edge of the end piece. 2. A chuck ring is internally provided at a lower end portion of a connecting member connected to a hose opening to allow a cylindrical body of a male joint member, which will be described later, to be fitted and to clamp the cylindrical body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In a coupling device for a hose configured with a male joint member provided in, the male joint member is formed with a non-slip portion on the outer periphery of the lower half part connected to the hose mouth, and
A stop ring is engaged with the outer circumference at an intermediate position in the longitudinal direction, and a lower end is provided between the reinforcement ring and the stop ring of a stainless steel cylinder in which a short length reinforcement ring made of stainless steel is fitted on the outer circumference of the upper end. A coupling device for a hose, characterized in that an operating ring made of stainless steel having an outward flange is slidably fitted in the operating ring. 3. A chuck ring is provided inside a lower end portion of a connecting member connected to a hose mouth to allow a cylindrical body of a male joint member, which will be described later, to be fitted and to clamp the cylindrical body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In a joint device for a hose, which comprises a male joint member provided in the above, the connecting member comprises an insertion cylinder made of stainless steel having a non-slip portion formed on an outer periphery of an upper portion to be connected to a hose mouth, and an opening portion at a central portion. And a lower end portion of the insertion tube is fitted to the fitting portion, and a mounting portion piece made of stainless steel having a fitting rib on the outer periphery is fitted, and an outer circumference of the upper end portion is fitted to the fitting rib, and , With an inward receiving rib on the rear end and a groove on the inner circumference And a packing is fitted to this, and the screw is formed on the outer circumference of the threaded portion made of stainless steel.The connecting ring is provided with a ridge on the outer circumference of the upper end and the thread on the inner circumference. At the lower end of the ring body made of stainless steel, which is provided with a screw to be screwed with the mating piece, an end piece made of stainless steel having a connection opening at the center is formed so that its outer peripheral edge slightly protrudes from the outer peripheral surface of the ring body. And a cushioning ring is fitted between the ridge and the outer peripheral edge of the end piece, and the male joint member is prevented from slipping on the outer periphery of the lower half part connected to the hose mouth. The reinforcing ring and the stop ring of a cylindrical body made of stainless steel, which form a portion and engage a stop ring on the outer periphery at the intermediate position in the longitudinal direction, and which has a short length reinforcing ring made of stainless steel fitted on the outer periphery of the upper end portion. Between the and Coupling device of the hose, characterized in the operating ring of stainless be constructed engaged slidably fitted in the axial direction. 4. A chuck ring is provided inside a lower end portion of a connecting member connected to a hose opening to allow insertion of a cylindrical body of a male joint member, which will be described later, and to clamp the cylindrical body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In a hose coupling device configured with a male joint member provided in, the connecting member is made of a stainless pipe having an upper portion connected to the hose mouth portion and formed with a serrated cross section by roll forming to provide a non-slip portion. The insertion tube and the stainless steel plate are drawn to form an opening in the center for fitting the lower end of the insertion tube, and a mounting rib provided with a fitting rib on the outer periphery and the stainless steel plate. Processed and inward on the lower edge of the body Formed by the inner surface of the mounting part piece and the inner surface of the threaded part, which is formed by drawing a bent stainless steel plate with a bent receiving rib and a screw and a cutout on the outer circumference. And an auxiliary ring made of a stainless steel plate that is superposed on the upper surface of the receiving rib, and the lower end of the insertion tube is fitted into the opening of the mounting piece. , The fitting rib is fitted in the cutout portion, the inner ring is fitted in a corner portion formed by the inner surface of the mounting portion piece and the inner surface of the screwing portion piece, and an auxiliary ring is formed on the upper surface of the receiving rib. In the state of being overlapped with each other, the fitting part and the overlapping part are brazed respectively, and the packing is fitted between the auxiliary ring and the inner ring, and the connecting ring is drawn by squeezing the stainless pipe. After processing, bending the upper edge outward and providing a ridge At the lower end of the ring body provided with a screw to be screwed with the above-mentioned threaded portion on its inner periphery, an end piece made of a stainless steel plate having a connection port formed in the center is formed, and its outer peripheral edge is the outer periphery of the ring body. A method for manufacturing a joint device for a hose, characterized by being produced by brazing the abutting portion in a state of abutting so as to slightly project from the surface. 5. A chuck ring is provided inside a lower end portion of a connecting member connected to a hose opening to allow a male body of a male joint member, which will be described later, to be fitted and to sandwich the tubular body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In the hose coupling device configured with a male joint member provided in, the male joint member is formed with a lower portion to be inserted into the hose mouth portion by roll molding to form a non-slip portion having a serrated cross section, and an intermediate portion in the longitudinal direction. At the outer periphery of the position, a reinforcing rib made of a short stainless pipe is fitted to the outer periphery of the upper end of the cylindrical body made of a stainless steel pipe, and the fitting portion is brazed. Stainless steel pipe at the bottom It is manufactured by drawing an operation ring and fitting an operation ring integrally having an outward flange at its lower end slidably in the axial direction, and then engaging a stop ring with the engagement groove. Device for hose and manufacturing method thereof. 6. A chuck ring is provided inside a lower end portion of a connecting member connected to a hose opening to allow a cylindrical body of a male joint member, which will be described later, to be fitted and to clamp the cylindrical body by the chuck ring. The operation ring that releases the clamped state can be slid on the female joint member with the connection ring screwed and connected to the tubular body whose lower part is connected to the mouth of the water discharge hose and whose upper part is clamped by the female joint member. In a hose coupling device configured with a male joint member provided in, the connecting member is made of a stainless pipe having an upper portion connected to the hose mouth portion and formed with a serrated cross section by roll forming to provide a non-slip portion. The insertion tube and the stainless steel plate are drawn to form an opening in the center for fitting the lower end of the insertion tube, and a mounting rib provided with a fitting rib on the outer periphery and the stainless steel plate. Processed and inward on the lower edge of the body Formed by the inner surface of the mounting part piece and the inner surface of the threaded part, which is formed by drawing a bent stainless steel plate with a bent receiving rib and a screw and a cutout on the outer circumference. And an auxiliary ring made of a stainless steel plate that is superposed on the upper surface of the receiving rib, and the lower end of the insertion tube is fitted into the opening of the mounting piece. , The fitting rib is fitted in the cutout portion, the inner ring is fitted in a corner portion formed by the inner surface of the mounting portion piece and the inner surface of the screwing portion piece, and an auxiliary ring is formed on the upper surface of the receiving rib. In the state of being overlapped with each other, the fitting part and the overlapping part are brazed respectively, and the packing is fitted between the auxiliary ring and the inner ring, and the connecting ring is drawn by squeezing the stainless pipe. After processing, bending the upper edge outward and providing a ridge At the lower end of the ring body provided with a screw to be screwed with the above-mentioned threaded portion on its inner periphery, an end piece made of a stainless steel plate having a connection port formed in the center is formed, and its outer peripheral edge is the outer periphery of the ring body. It is produced by brazing the abutting portion in a state in which it abuts so as to slightly project from the surface, and the male joint member is formed into a serrated cross section by roll-forming the lower part to be inserted into the hose mouth. A reinforcing rib made of a short stainless pipe is fitted on the outer circumference of the upper end of a cylindrical body made of a stainless pipe with a non-slip portion and an engaging groove provided at the outer periphery at the intermediate position in the longitudinal direction. The part is brazed, and at the bottom of the cylinder,
It was manufactured by drawing a stainless steel pipe, fitting an operation ring integrally having an outward flange at its lower end slidably in the axial direction, and then engaging a stop ring with the engagement groove. A hose coupling device and a method of manufacturing the same. 7. The hose coupling device according to claim 4, 5 or 6, wherein the brazing is copper brazing, and a method for manufacturing the same.