EP0187656A2 - Method of making male elements for hinge devices and hinge devices obtained thereby - Google Patents
Method of making male elements for hinge devices and hinge devices obtained thereby Download PDFInfo
- Publication number
- EP0187656A2 EP0187656A2 EP86100126A EP86100126A EP0187656A2 EP 0187656 A2 EP0187656 A2 EP 0187656A2 EP 86100126 A EP86100126 A EP 86100126A EP 86100126 A EP86100126 A EP 86100126A EP 0187656 A2 EP0187656 A2 EP 0187656A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pin
- hinge
- hollow
- male
- cylindrical
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 7
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 2
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011328 necessary treatment Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D5/00—Construction of single parts, e.g. the parts for attachment
- E05D5/10—Pins, sockets or sleeves; Removable pins
-
- 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
- B21K13/00—Making locksmiths' goods, e.g. handles for cases
- B21K13/02—Making locksmiths' goods, e.g. handles for cases hinges
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D5/00—Construction of single parts, e.g. the parts for attachment
- E05D5/10—Pins, sockets or sleeves; Removable pins
- E05D2005/102—Pins
Definitions
- the present invention relates to a method of making hinge devices and hinge devices obtained thereby.
- hinges having an internally hollow male element in order to achieve a lighter construction and lower manufacturing costs.
- any liquid left inside the male element may seep out of it and attack, due to its prevailingly acidic nature, other hinges.
- a hinge device which includes a hollow male element, at the end of which there is mounted a hardened sphere adapted to plug the open end of the hinge's hollow male element or pin and to bear on the base of a seat, formed on the female element and correspondingly shaped to accommodate the pin.
- a further important object is to provide a method which permits the obtainment of a watertight hinge device without resorting to the use of additional elements of a different material.
- Another object is to provide a method which permits the obtainment of a hinge device having a strong pivot point of homogeneous construction well protected against any oxidizing agents which may be present in the environment.
- a not least object is to provide a method which is automatable throughout and implementable with ordinary equipment.
- the method comprises a first step of shearing or severing a section or length from a cylindrical drawn wire rod blank to define a blank section cut from a wire rod (not shown).
- the volume of the material making up the blank section should be equal to the volume of the material of the semifinished product obtained during the last step. That section is impact upset on a die to provide a regular cylinder 1 with one end 2 having a flat surface 3, and possibly a rounded area 4 at the other end as shown in Figure 2.
- the cylinder 1 is cold reverse-extruded in a suitable die 30 by means of a first cylindrical punch 31 and subsequently a second cylindrical punch 32, if desired, having a smaller cross-section than that of the surface 3; thus, the material is upturned laterally to define a body 5 ( Figure 3) or 5a ( Figure 8) with a cavity 6 of cylindrical form and an opening 7 at the end 2.
- a die 33 will reduce a portion of the body 5 at the end 2 by striking as shown in Figure 4 or 9, to define a pin 8 ( Figure 4) or 8a ( Figure 9) of cylindrical shape having an inside cavity 9 with the same shape and an opening 10 at its end extremity 11.
- the pin 8 or 8a has a smaller outside diameter than the body 5, there being formed a flat annular base 12 therebetween or a transitional bevelled shoulder 12a ( Figure 9) which is subsequently rendered flat in 12b ( Figure 10).
- the next step of the method is one of cold or hot upsetting the end extremity 11 of the pin 8, with a single strike or more strikes, the inner cavity 9 of the latter communicating with the 6.
- FIGS 5 and 6 and 10,11 there are shown an intermediate step wherein the walls 13 of the end extremity 11 are brought together first, and the final step wherein an end of essentially hemispherical shape is defined which is radiused to the side walls 15 of the pin 8 and closes the cavity 9 thereof.
- the end extremity 14 thus defined prevents penetration of the liquid during the successive step of immersion into galvanic baths for the necessary treatment.
- the extremity 14 becomes, therefore, the terminating end of the pin 8 on which the female 16 is made to bear and turn friction-free.
- the latter has a cylindrical body 17 shaped to match the pin 8 of the male element 18, the depth of its seat 19 being slightly smaller than the length of the pin 8 itself.
- a means 22 adapted to associate the hinge 23 to the casings, said means consisting of an outside threaded shank.
- the male element 18 being of hollow construction, manufacturing cost is lowered because of the reduced raw material requirements.
- a tang may be formed at the end 4 which protrudes along the same longitudinal mid-axis, which tang may be then fashioned plastically into a desired aesthetic configuration.
- Such tang may be formed by providing a counter-punch 34, which normally closes the bottom 35 of the die 30, with a central bore (not shown) or by omitting the use of a counter-punch 34 so that the bottom 35 of the die 30 is left with a bore-like opening in which the counter-punch 34 may be arranged if desired.
- the materials used and the dimensions of the hinge may be any ones according to necessity.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
Description
- The present invention relates to a method of making hinge devices and hinge devices obtained thereby.
- Currently known are hinges having an internally hollow male element in order to achieve a lighter construction and lower manufacturing costs.
- Such a product and the method of making it are described in the published German Patent Application No. 2808411 filed by the same Applicant on February 27, 1978.
- That prior type has, however, some small drawbacks: first, owing to the particular construction of the male element, the female element bears on the base of the same.
- This is disadvantageous where the hinge is formed from ferrous materials and then used in a marine environment: there occur, in fact, in such conditions oxide formations which create an area of high frictional resistance on the pin base which reduces the overall functionality of the hinge.
- To obviate such drawbacks one may use such materials such as stainless steel or brass, which however, greatly increase the cost of the end product.
- Further, with the particular hollow construction of the male element, another drawback is encountered: during galvanic bath treatment, some of the liquid seeps into the interior of the male element which then contaminates other tanks containing different liquids during the successive steps required to complete the treatment.
- This also results in a cost increase, albeit a minor one.
- During storage, moreover, any liquid left inside the male element may seep out of it and attack, due to its prevailingly acidic nature, other hinges.
- In an effort to partly solve the problem, the holder of this Application filed a European Patent Application No. 85108665.2 on July 11, 1985 wherein a hinge device is described which includes a hollow male element, at the end of which there is mounted a hardened sphere adapted to plug the open end of the hinge's hollow male element or pin and to bear on the base of a seat, formed on the female element and correspondingly shaped to accommodate the pin.
- However, that prior type also has the disadvantage that it is more expensive to manufacture owing to the added material and machining involved in mounting the sphere at the end of the male element.
- It is the primary aim of the present invention to eliminate such drawbacks of prior types by providing a method which permits the obtainment of a hinge device of reduced overall cost and in particular reduced material requirements, as well as being of watertight construction.
- A further important object is to provide a method which permits the obtainment of a watertight hinge device without resorting to the use of additional elements of a different material.
- Another object is to provide a method which permits the obtainment of a hinge device having a strong pivot point of homogeneous construction well protected against any oxidizing agents which may be present in the environment.
- A not least object is to provide a method which is automatable throughout and implementable with ordinary equipment.
- These and other objects are achieved by a method of making hinge devices and hinge devices obtained thereby, characterised in that it comprises the following steps:
- a) shearing a section from a cylindrical drawn blank;
- b) cold impact extruding said cylindrical sections using a punch effective to form the material to provide a hollow body having at least one open end;
- c) reducing a portion of said hollow body from the open end thereof by impact with a shaped punch;
- d) upsetting and consequent plugging of said open end of the reduced portion;
- e) surface finishing the obtained hinge. According to another aspect of the invention there is provided a hinge device obtained by the above cited method, which is characterised by that it comprises a hollow male element having a pin whose end is upset and stopped, said hinge further comprising a female element shaped to match and bearing on said end of the pin, a means being also provided for associating the same with standing finish.
- Further features and advantages of the invention will be apparent from the following detailed description of a particular, but not exclusive, embodiment thereof, with reference to the accompanying illustrative and not limitative drawings, where:
- Figure 1 is a perspective, exploded partly sectional view of the hinge;
- Figure 2 shows a perspective view of a cylindrical drawn blank;
- Figures 3,4,5 and 6 show a view taken on the longitudinal section plane of the male element as depicted during some machining steps.
- Figures 7 to 11, show processing sequences as carried out by cooperating tool means.
- With reference. to the previously cited figures, the method comprises a first step of shearing or severing a section or length from a cylindrical drawn wire rod blank to define a blank section cut from a wire rod (not shown). The volume of the material making up the blank section should be equal to the volume of the material of the semifinished product obtained during the last step. That section is impact upset on a die to provide a regular cylinder 1 with one end 2 having a flat surface 3, and possibly a rounded area 4 at the other end as shown in Figure 2.
- During a subsequent step (Figures 7 and 8), the cylinder 1 is cold reverse-extruded in a
suitable die 30 by means of a firstcylindrical punch 31 and subsequently a secondcylindrical punch 32, if desired, having a smaller cross-section than that of the surface 3; thus, the material is upturned laterally to define a body 5 (Figure 3) or 5a (Figure 8) with acavity 6 of cylindrical form and anopening 7 at the end 2. - Thereafter, a
die 33 will reduce a portion of thebody 5 at the end 2 by striking as shown in Figure 4 or 9, to define a pin 8 (Figure 4) or 8a (Figure 9) of cylindrical shape having aninside cavity 9 with the same shape and anopening 10 at itsend extremity 11. - The
pin 8 or 8a has a smaller outside diameter than thebody 5, there being formed a flatannular base 12 therebetween or a transitional bevelledshoulder 12a (Figure 9) which is subsequently rendered flat in 12b (Figure 10). - The next step of the method is one of cold or hot upsetting the
end extremity 11 of thepin 8, with a single strike or more strikes, theinner cavity 9 of the latter communicating with the 6. - In Figures 5 and 6 and 10,11 there are shown an intermediate step wherein the
walls 13 of theend extremity 11 are brought together first, and the final step wherein an end of essentially hemispherical shape is defined which is radiused to theside walls 15 of thepin 8 and closes thecavity 9 thereof. - The
end extremity 14 thus defined prevents penetration of the liquid during the successive step of immersion into galvanic baths for the necessary treatment. - The
extremity 14 becomes, therefore, the terminating end of thepin 8 on which the female 16 is made to bear and turn friction-free. - The latter has a
cylindrical body 17 shaped to match thepin 8 of themale element 18, the depth of itsseat 19 being slightly smaller than the length of thepin 8 itself. - Secured on each of the
side surfaces bodies means 22 adapted to associate thehinge 23 to the casings, said means consisting of an outside threaded shank. - The
hinge 23, owing to the configuration of thepin 8 andseat 19, characteristically works on theend 14 rather than on thebase 9. This improves the functional aspect in that sliding is improved and the pivot point, represented by theextremity 14, is protected, inside the female element 16, against any environmental agents. - The
male element 18 being of hollow construction, manufacturing cost is lowered because of the reduced raw material requirements. - The upsetting of the
end 11 defining theextremity 14 of essentially hemispherical shape results in thecavity 9 being closed and the liquid present in the galvanic bath tanks being prevented from entering themale element 18, and this without any addition or remowal of foreign bodies. - Thus, it has been shown how the method of forming a hollow male hinge with a closed cavity achieves all its objects by affording lower costs and improving the functional aspect.
- Of course, the invention herein is susceptible to many modifications and changes without deviating from the scope of the inventive concept.
- Thus, as an example, during the cold impact reverse-extrusion step for extruding the cylinder 1, a tang may be formed at the end 4 which protrudes along the same longitudinal mid-axis, which tang may be then fashioned plastically into a desired aesthetic configuration. Such tang may be formed by providing a
counter-punch 34, which normally closes thebottom 35 of thedie 30, with a central bore (not shown) or by omitting the use of acounter-punch 34 so that thebottom 35 of thedie 30 is left with a bore-like opening in which thecounter-punch 34 may be arranged if desired. Of course, also the materials used and the dimensions of the hinge may be any ones according to necessity.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT82503/85A IT1187411B (en) | 1985-01-09 | 1985-01-09 | PROCEDURE FOR OBTAINING A CABLE MALE HINGE WITH CLOSED CAVITY |
IT8250385 | 1985-01-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0187656A2 true EP0187656A2 (en) | 1986-07-16 |
EP0187656A3 EP0187656A3 (en) | 1986-10-01 |
EP0187656B1 EP0187656B1 (en) | 1990-04-11 |
Family
ID=11317938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86100126A Expired - Lifetime EP0187656B1 (en) | 1985-01-09 | 1986-01-07 | Method of making male elements for hinge devices and hinge devices obtained thereby |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0187656B1 (en) |
DE (1) | DE3670224D1 (en) |
ES (2) | ES8704772A1 (en) |
IT (1) | IT1187411B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUD20080273A1 (en) * | 2008-12-22 | 2010-06-23 | Otlav Spa | HINGING ELEMENT AND ITS IMPLEMENTATION PROCEDURE |
IT202000016414A1 (en) * | 2020-07-07 | 2022-01-07 | Combi Arialdo S N C | METHOD FOR CREATING A HINGE ORGAN FOR METALLIC AND SIMILAR WINDOWS AND THE HINGE ORGAN THUS OBTAINED |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB911029A (en) * | 1960-03-03 | 1962-11-21 | Gen Motors Corp | Improvements relating to ball studs |
FR2368316A1 (en) * | 1976-10-21 | 1978-05-19 | Kramatorsky Ind Institu | Forming sealed sphere shaped end in tube - by spinning and forming the heated tube end |
DE2808411A1 (en) * | 1977-02-28 | 1978-08-31 | Padovan Ind Mecc Otlav | METHOD FOR MANUFACTURING A HOLLOW BODY, IN PARTICULAR A HOLLOW HINGE PIN FROM A BLANK AND THE PRODUCT OBTAINED THIS |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
-
1985
- 1985-01-09 IT IT82503/85A patent/IT1187411B/en active
-
1986
- 1986-01-07 EP EP86100126A patent/EP0187656B1/en not_active Expired - Lifetime
- 1986-01-07 DE DE8686100126T patent/DE3670224D1/en not_active Expired - Lifetime
- 1986-01-09 ES ES551291A patent/ES8704772A1/en not_active Expired
-
1987
- 1987-01-15 ES ES1987296110U patent/ES296110Y/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB911029A (en) * | 1960-03-03 | 1962-11-21 | Gen Motors Corp | Improvements relating to ball studs |
FR2368316A1 (en) * | 1976-10-21 | 1978-05-19 | Kramatorsky Ind Institu | Forming sealed sphere shaped end in tube - by spinning and forming the heated tube end |
DE2808411A1 (en) * | 1977-02-28 | 1978-08-31 | Padovan Ind Mecc Otlav | METHOD FOR MANUFACTURING A HOLLOW BODY, IN PARTICULAR A HOLLOW HINGE PIN FROM A BLANK AND THE PRODUCT OBTAINED THIS |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUD20080273A1 (en) * | 2008-12-22 | 2010-06-23 | Otlav Spa | HINGING ELEMENT AND ITS IMPLEMENTATION PROCEDURE |
EP2199512A1 (en) * | 2008-12-22 | 2010-06-23 | OTLAV SpA | Hinging element and relative method of manufacture |
IT202000016414A1 (en) * | 2020-07-07 | 2022-01-07 | Combi Arialdo S N C | METHOD FOR CREATING A HINGE ORGAN FOR METALLIC AND SIMILAR WINDOWS AND THE HINGE ORGAN THUS OBTAINED |
Also Published As
Publication number | Publication date |
---|---|
DE3670224D1 (en) | 1990-05-17 |
ES296110Y (en) | 1988-04-16 |
EP0187656B1 (en) | 1990-04-11 |
ES296110U (en) | 1987-10-16 |
IT1187411B (en) | 1987-12-23 |
EP0187656A3 (en) | 1986-10-01 |
ES551291A0 (en) | 1987-05-01 |
ES8704772A1 (en) | 1987-05-01 |
IT8582503A0 (en) | 1985-01-09 |
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