GB2121705A - Manufacture of a hose mouthpiece - Google Patents

Manufacture of a hose mouthpiece Download PDF

Info

Publication number
GB2121705A
GB2121705A GB08308122A GB8308122A GB2121705A GB 2121705 A GB2121705 A GB 2121705A GB 08308122 A GB08308122 A GB 08308122A GB 8308122 A GB8308122 A GB 8308122A GB 2121705 A GB2121705 A GB 2121705A
Authority
GB
United Kingdom
Prior art keywords
nipple
hose
mouthpiece
hole
seat surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08308122A
Other versions
GB2121705B (en
GB8308122D0 (en
Inventor
Kenji Sugiyama
Takeshi Miyazaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Publication of GB8308122D0 publication Critical patent/GB8308122D0/en
Publication of GB2121705A publication Critical patent/GB2121705A/en
Application granted granted Critical
Publication of GB2121705B publication Critical patent/GB2121705B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/14—Making machine elements fittings
    • B21K1/16—Making machine elements fittings parts of pipe or hose couplings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P11/00—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for 
    • B23P11/005—Connecting or disconnecting metal parts or objects by metal-working techniques not otherwise provided for  by expanding or crimping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/20—Undivided rings, sleeves or like members contracted on the hose or expanded in the hose by means of tools; Arrangements using such members

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Forging (AREA)

Abstract

A process for manufacturing a hose mouthpiece by joining a nipple 1A to a mouthpiece body 5 having an axial nipple holding hole 6 which includes a tapered portion. The tapered portion has a diameter which gradually increases toward that end of the hole around which a surface defining a seat 8 for one end of a hose is formed in the body. One end of the nipple is press fitted into the tapered portion, and the seat defining surface is caulked about the nipple using a tool 7, whereby the nipple is secured to the body. The process is suitable for making, for example, a mouthpiece for a brake hose, and is inexpensive, since it does not include welding or brazing. <IMAGE>

Description

SPECIFICATION Process for manufacturing a hose mouthpiece BACKGROUND OF THE INVENTION 1. Field of the Invention: This invention relates to a process for manufacturing a hose mouthpiece, such as for a brake hose, by joining a mouthpiece body and a nipple together.
2. Description of the Prior Art: A hose mouthpiece, such as for a brake hose, has hitherto been manufactured by cutting, for example, a steel bar having a predetermined length into a shape having a nipple 1 to which a hose is connected, a female screw thread 2 by which the mouthpiece is connected to a nozzle member, and a seat 3 for the nozzle member, as shown in Fig. 1. This method, however, requires a lot of time and labor because of, for example, complications involved in the formation of the nipple. Various methods have, therefore, been proposed to overcome those disadavantages. According to these methods, a mouthpiece body having a nipple holding hole and a nipple are prepared separately from each other, and the nipple is inserted into the nipple holding hole, and secured to the mouthpiece body by welding or brazing or otherwise.These methods, however, require an expensive welding or brazing apparatus, and a lot of time and labor for the welding or brazing job.
SUMMARY OF THE INVENTION This invention provides a simple process which makes it possible to manufacture hose mouthpieces at a low cost without requiring any welding or brazing apparatus. The process of this invention employs a mouthpiece body and a nipple which are prepared separately from each other. The mouthpiece body has a nipple holding hole, and a seat surface encircling one end of the hole, while another seat surface defining a seat for a hose is provided around the other end of the hole.
The hole includes a portion having a diameter which gradually increases toward the other end thereof. The nipple has an outside diameter which is substantially equal to the largest diameter of the nipple holding hole. The nipple is inserted at one end into the hole by press fitting through the other end thereof, and the seat surface around the other end of the hole is caulked about the nipple, whereby the nipple is secured to the mouthpiece body.
BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a longitudinal sectional view of a conventional hose mouthpiece; Figure 2 is a longitudinal sectional view of the nipple and the mouthpiece body which are going to be joined to each other in accordance with the process of this invention; and Figure 3 is a longitudinal sectional view of a hose mouthpiece obtained by the process of this invention.
DESCRIPTION OF THE PREFERRED EMBODI MENT The process of this invention employs a nipple 1A and a mouthpiece body 5 which are prepared separately from each other as shown in Fig. 2. The mouthpiece body 5 is prepared from a steel bar or the like by cutting, and has a female screw thread 2, a first seat surface 3, a sleeve 4, a nipple holding hole 6 which defines a fluid passage with the axial bore of the nipple, and a second seat surface 8 definining a seat for one end of a hose. The first seat surface 3 encircles one end of the hole 6, while the second seat surface 8 is provided around the other end of the hole 6. The hole 6 includes a portion spaced inwardly of one end thereof, and having a diameter which gradually increases toward the other end thereof. This portion has a tapered contour in longitudinal section as shown in Fig. 2.It is tapered at an angle of 4 to 8 . If this angle is smaller, the nipple 1A may fail to fit in the hole 6 tightly enough to achieve a tight seal therebetween.
If the angle is too large, the nipple is liable to buckling when press fitted in the hole 6. The nipple 1A is prepared from a steel tube or the like having a predetermined length. If desired, it is possible to use a nipple having a fir-tree end which may be prepared by rolling or cutting.
The nipple 1 A is press fitted into the tapered portion of the hole 6 in the mouthpiece body 5, and the seat surface 8 is caulked about the nipple 1A by a tubular punch 7 as shown in Fig.3, whereby the nipple 1A is secured to the body 5. Thus, the nipple 1A is firmly joined to the mouthpiece body 5 by press-fitting and caulking, and a tight seal is obtained between the nipple 1A and the mouthpiece body 5.
A hose may be connected to the mouthpiece in a customary manner, i.e., one end of the hose is inserted into an annular space between the nipple 1 A and the sleeve 4, and the sleeve 4 is caulked about the hose.
1. In a process for manufacturing a hose mouthpiece by joining a nipple to a mouthpiece body having a nipple holding hole, the improvement which comprises: forming said hole with a tapered portion having a diameter which gradually increases toward that end of said hole around which a surface defining a seat for one end of a hose is formed in said body; press fitting one end of said nipple into said tapered portion through said end of said hole; and
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Process for manufacturing a hose mouthpiece BACKGROUND OF THE INVENTION 1. Field of the Invention: This invention relates to a process for manufacturing a hose mouthpiece, such as for a brake hose, by joining a mouthpiece body and a nipple together. 2. Description of the Prior Art: A hose mouthpiece, such as for a brake hose, has hitherto been manufactured by cutting, for example, a steel bar having a predetermined length into a shape having a nipple 1 to which a hose is connected, a female screw thread 2 by which the mouthpiece is connected to a nozzle member, and a seat 3 for the nozzle member, as shown in Fig. 1. This method, however, requires a lot of time and labor because of, for example, complications involved in the formation of the nipple. Various methods have, therefore, been proposed to overcome those disadavantages. According to these methods, a mouthpiece body having a nipple holding hole and a nipple are prepared separately from each other, and the nipple is inserted into the nipple holding hole, and secured to the mouthpiece body by welding or brazing or otherwise.These methods, however, require an expensive welding or brazing apparatus, and a lot of time and labor for the welding or brazing job. SUMMARY OF THE INVENTION This invention provides a simple process which makes it possible to manufacture hose mouthpieces at a low cost without requiring any welding or brazing apparatus. The process of this invention employs a mouthpiece body and a nipple which are prepared separately from each other. The mouthpiece body has a nipple holding hole, and a seat surface encircling one end of the hole, while another seat surface defining a seat for a hose is provided around the other end of the hole. The hole includes a portion having a diameter which gradually increases toward the other end thereof. The nipple has an outside diameter which is substantially equal to the largest diameter of the nipple holding hole. The nipple is inserted at one end into the hole by press fitting through the other end thereof, and the seat surface around the other end of the hole is caulked about the nipple, whereby the nipple is secured to the mouthpiece body. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a longitudinal sectional view of a conventional hose mouthpiece; Figure 2 is a longitudinal sectional view of the nipple and the mouthpiece body which are going to be joined to each other in accordance with the process of this invention; and Figure 3 is a longitudinal sectional view of a hose mouthpiece obtained by the process of this invention. DESCRIPTION OF THE PREFERRED EMBODI MENT The process of this invention employs a nipple 1A and a mouthpiece body 5 which are prepared separately from each other as shown in Fig. 2. The mouthpiece body 5 is prepared from a steel bar or the like by cutting, and has a female screw thread 2, a first seat surface 3, a sleeve 4, a nipple holding hole 6 which defines a fluid passage with the axial bore of the nipple, and a second seat surface 8 definining a seat for one end of a hose. The first seat surface 3 encircles one end of the hole 6, while the second seat surface 8 is provided around the other end of the hole 6. The hole 6 includes a portion spaced inwardly of one end thereof, and having a diameter which gradually increases toward the other end thereof. This portion has a tapered contour in longitudinal section as shown in Fig. 2.It is tapered at an angle of 4 to 8 . If this angle is smaller, the nipple 1A may fail to fit in the hole 6 tightly enough to achieve a tight seal therebetween. If the angle is too large, the nipple is liable to buckling when press fitted in the hole 6. The nipple 1A is prepared from a steel tube or the like having a predetermined length. If desired, it is possible to use a nipple having a fir-tree end which may be prepared by rolling or cutting. The nipple 1 A is press fitted into the tapered portion of the hole 6 in the mouthpiece body 5, and the seat surface 8 is caulked about the nipple 1A by a tubular punch 7 as shown in Fig.3, whereby the nipple 1A is secured to the body 5. Thus, the nipple 1A is firmly joined to the mouthpiece body 5 by press-fitting and caulking, and a tight seal is obtained between the nipple 1A and the mouthpiece body 5. A hose may be connected to the mouthpiece in a customary manner, i.e., one end of the hose is inserted into an annular space between the nipple 1 A and the sleeve 4, and the sleeve 4 is caulked about the hose. CLAIMS
1. In a process for manufacturing a hose mouthpiece by joining a nipple to a mouthpiece body having a nipple holding hole, the improvement which comprises: forming said hole with a tapered portion having a diameter which gradually increases toward that end of said hole around which a surface defining a seat for one end of a hose is formed in said body; press fitting one end of said nipple into said tapered portion through said end of said hole; and caulking said surface about said nipple, whereby said nipple is secured to said body.
2. A process as set forth in claim 1, wherein said tapered portion has a taper angle of 4 to 8 .
3. A hose mouthpiece when made in accordance with the process claimed in any one of claims 1 to 3.
4. A process for manufacturing a hose mouthpiece substantially as hereinbefore described and with reference to Figs. 2 and 3 of the accompanying drawings.
5. A hose mouthpiece constructed and arranged substantially as hereinbefore described with reference to Fig. 3 of the accompanying drawings.
GB08308122A 1982-04-06 1983-03-24 Manufacture of a hose mouthpiece Expired GB2121705B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5755182A JPS58176036A (en) 1982-04-06 1982-04-06 Manufacture of hose mouthpiece

Publications (3)

Publication Number Publication Date
GB8308122D0 GB8308122D0 (en) 1983-05-05
GB2121705A true GB2121705A (en) 1984-01-04
GB2121705B GB2121705B (en) 1985-09-11

Family

ID=13058927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08308122A Expired GB2121705B (en) 1982-04-06 1983-03-24 Manufacture of a hose mouthpiece

Country Status (2)

Country Link
JP (1) JPS58176036A (en)
GB (1) GB2121705B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390747A2 (en) * 1989-03-31 1990-10-03 Geberit AG Sealing connection for multilayer plastic pipes
DE4325349A1 (en) * 1993-07-28 1995-02-02 Kirchner Fraenk Rohr Connecting device
EP1070896A3 (en) * 1999-07-22 2003-10-01 Mapress GmbH & Co. KG Method for making a press-fitting element
CN105774791A (en) * 2016-05-31 2016-07-20 北京汽车研究总院有限公司 Brake hose assembly, vehicle, and brake hose assembly assembling method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390747A2 (en) * 1989-03-31 1990-10-03 Geberit AG Sealing connection for multilayer plastic pipes
EP0390747A3 (en) * 1989-03-31 1991-04-03 Geberit AG Sealing connection for multilayer plastic pipes
DE4325349A1 (en) * 1993-07-28 1995-02-02 Kirchner Fraenk Rohr Connecting device
DE4325349C2 (en) * 1993-07-28 1998-01-15 Kirchner Fraenk Rohr Connecting device
EP1070896A3 (en) * 1999-07-22 2003-10-01 Mapress GmbH & Co. KG Method for making a press-fitting element
CN105774791A (en) * 2016-05-31 2016-07-20 北京汽车研究总院有限公司 Brake hose assembly, vehicle, and brake hose assembly assembling method

Also Published As

Publication number Publication date
GB2121705B (en) 1985-09-11
JPS58176036A (en) 1983-10-15
GB8308122D0 (en) 1983-05-05

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Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee