EP0190636A2 - Method of manufacturing male elements for hinge devices - Google Patents
Method of manufacturing male elements for hinge devices Download PDFInfo
- Publication number
- EP0190636A2 EP0190636A2 EP86101044A EP86101044A EP0190636A2 EP 0190636 A2 EP0190636 A2 EP 0190636A2 EP 86101044 A EP86101044 A EP 86101044A EP 86101044 A EP86101044 A EP 86101044A EP 0190636 A2 EP0190636 A2 EP 0190636A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pin
- hollow body
- hinge devices
- open end
- hollow
- 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 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910000760 Hardened steel Inorganic materials 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000047 product Substances 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
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000015572 biosynthetic process 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
- 238000005516 engineering process 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
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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
- 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
- E05D11/00—Additional features or accessories of hinges
- E05D11/04—Additional features or accessories of hinges relating to the use of free balls as bearing-surfaces
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D11/00—Additional features or accessories of hinges
- E05D11/04—Additional features or accessories of hinges relating to the use of free balls as bearing-surfaces
- E05D2011/045—Additional features or accessories of hinges relating to the use of free balls as bearing-surfaces located in line with the hinge axis
Definitions
- the present invention relates to a method of manufacturing male elements for hinge devices and male elements obtained thereby.
- hinges the male element whereof is internally hollow to lighten the construction while decreasing manufacturing costs.
- That prior type has, however, a drawback due to the particular construction of the male which, being hollow, during the galvanic bathing some of the liquid penetrates the interior of the same, contaminating the other successive vats, in the following steps required to complete the treatment.
- any liquid left inside the male may flow out thereof and attack, owing to its primarily acidic nature, .other hinges.
- the female bears and rotates on the base.
- the primary aim of this invention is, therefore, to eliminate the above cited drawbacks, by providing a method of manufacturing male elements, for hinge devices which are of low cost and feature a sealed construction.
- Another object is to provide a method of manufacturing male elements, for hinge devices which have a strong, homogeneous pivot point protected against any oxidizing agents present in the environment.
- a not least object is to provide a method of manufacturing male elements for hinge devices, which is fully automatic and implementable with ordinary equipment.
- a male element for hinge devices which is characterized in that it comprises a hollow body having protruding therefrom a pin the end whereof is sealed by a shaped body, adapted for rotatably supporting a female element, means being provided for associating said male element with casings.
- the method consists of a first step, of shearing a segment from a drawn rod (not shown), to define a blank.
- the material volume forming the blank should be equal to the volume of the material of the semifinished product to be obtained in the penultimate step of the method described hereinafter.
- the sheared blank is first upset by striking on a die to obtain a substantially regular cylinder 1 with one end 2 having a flat surface 3, and expediently formed with a rounded zone 4 at the peripheral edge of the opposite end.
- the cylinder 1 is cold extruded in a special die by means of a cylindrical punch having a smaller cross-sectional area than the surface 3; thus, causing the material flow laterally and upwards to define a body 5 with a cavity 6 of cylindrical shape, and an opening 7 at the end 2.
- means such as a die, reduces by striking, as illustrated in Figure 4, a portion of the body 5 at the end 2, to define a pin. 8, of open-ended cylindrical shape having an inner cavity 9 with the same shape and an opening 10 at its terminating end 11.
- the pin 8 has a smaller outside diameter than the body 5, between the two of them there being created a flat annular base 12.
- the next step envisages the press fitting of a shaped body at the opening 10 of the pin 8; that body is composed, in the preselected embodiment, of a ball 13 with a slightly larger diameter than the opening 10, though obviously, any other shaped body may be used which can be adapted for sealing the opening 10 of the pin 8 and providing a bearing of low frictional resistance for a female element.
- the ball 13, which is press fitted, is formed preferably from hardened steel, which causes the end 11 of the pin 8 to yield, creating in that step the housing seat; the fitting of the ball 13 into the opening 10 is, moreover, carried out so as to let a part of the curved surface of the ball project relatively to the terminating end 11 of the pin 8.
- the die which may be used to fit the ball into the end 11 advantageously defines a bevel which is adapted to squeeze the peripheral edges of the end 11 onto the lateral curved surface of the ball 13, this forming an aesthetic surface finish whilst completely sealing the pin 8.
- an end 14 of substantially hemispherical shape merging with the outer lateral wall 15 of the pin 8, and sealing the cavity 9 of the same so as to prevent the liquid from entering during the next step of immersion into galvanic baths for the necessary successive treatment steps.
- the end 14 becomes the terminating end of the pin 8 on which the flat, internal end of the female element 16, bears and turns with a very low coefficient of friction due to its small area of surface contact afforded by virtue of the carved terminating end of the pin.
- the female element has a cylindrical body 17 defining at an internal portion thereof a seat 19, shaped to substantially correspond to.the shape of the pin 8 of the male element 18, with necessary clearance, the depth of its seat 19 being slightly smaller than the length of the pin 8 itself, such that the flat end of the seat 19 bears directly onto the ball 13, and thus leaving a slight clearance between the end of the female element and the annular shoulder 12 of the male element.
- the hinge 23, given the shape of the pin 8 and the seat 19, has the feature of working on the end. 14 and not on the base 12.
- the cylinder 1 there may be obtained, at the end 4, a tang projecting according to the same mid-longitudinal axis, that tang being adapted to be later molded into any desired aesthetic shape.
- the shaped body fittable over the opening of the pin's open end may be a nail-like element with a larger diameter shank than that of the cavity 9 and whose head, preferably of hemispherical shape, serves as an optimum pivot point for the base of the seat 19 of the female, cr that body may comprise a hardened steel cylinder of larger diameter than the cavity 9, also acting as a pivot pin for the female.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
Description
- The present invention relates to a method of manufacturing male elements for hinge devices and male elements obtained thereby.
- Currently known are hinges, the male element whereof is internally hollow to lighten the construction while decreasing manufacturing costs.
- Such a product and the method for forming it are described in German published Patent application N. 28 08 411.9 filed on February 27, 1978, by the same applicant.
- That prior type has, however, a drawback due to the particular construction of the male which, being hollow, during the galvanic bathing some of the liquid penetrates the interior of the same, contaminating the other successive vats, in the following steps required to complete the treatment.
- This results in an increase in cost, albeit only slight.
- During the storage step, moreover, any liquid left inside the male may flow out thereof and attack, owing to its primarily acidic nature, .other hinges.
- Furthermore, owing to the particular construction of the male, the female bears and rotates on the base.
- This is a disadvantage in the instance where the hinge is formed from ferrous materials and then used in a marine environment; there occurs, in fact, in this case the formation of oxides which ereate a region of high frictional resistance on the pin base which reduces the overall functionality of the hinge.
- To solve such drawbacks there may be employed such materials as steel and brass, which considerably increase however, the cost of the end product.
- The primary aim of this invention is, therefore, to eliminate the above cited drawbacks, by providing a method of manufacturing male elements, for hinge devices which are of low cost and feature a sealed construction.
- Another object is to provide a method of manufacturing male elements, for hinge devices which have a strong, homogeneous pivot point protected against any oxidizing agents present in the environment.
- A not least object is to provide a method of manufacturing male elements for hinge devices, which is fully automatic and implementable with ordinary equipment.
- These and other objects are achieved by a method of manufacturing male elements, for hinge devices characterized in that it comprises the following processing steps:
- a) shearing of a segment off a drawn rod;
- b) cold impact extruding said cylindrical segment by means of a punch effective to cause the material to flow laterally upwards to produce a constant pattern hollow body having at least one open end;
- c) redu ing one portion of said hollow body from the open end by striking with a die defining a pin;
- d) press fitting a shaped body at the open end of the pin with consequent sealing of the same;
- e) surface finishing the thus formed male element for hinge devices.
- According to another aspect of the invention, there is provided a male element for hinge devices which is characterized in that it comprises a hollow body having protruding therefrom a pin the end whereof is sealed by a shaped body, adapted for rotatably supporting a female element, means being provided for associating said male element with casings.
- Further features and advantages of the invention will be more clearly apparent from the detailed description of a particular, but not exclusive, embodiment, shown by way of illustration and not of limitation in the accompanying drawing sheets where:
- Figure 1 is a partly cut-away perspective view of a hinge device including a male element obtained by the method according to the invention and a female element for cooperation therewith;
- Figure 2 is a perspective view of a sheared segment of drawn rod;
- Figures 3, 4 and 5 are sectional views of the male element taken on a longitudinal section plane thereof during some of the successive processing steps of the method of manufacturing male elements for hinge devices according to the invention.
- With reference to the above-cited drawing figures, the method consists of a first step, of shearing a segment from a drawn rod (not shown), to define a blank.
- The material volume forming the blank should be equal to the volume of the material of the semifinished product to be obtained in the penultimate step of the method described hereinafter.
- The sheared blank is first upset by striking on a die to obtain a substantially regular cylinder 1 with one
end 2 having aflat surface 3, and expediently formed with arounded zone 4 at the peripheral edge of the opposite end. - This technology is more fully described in the copending applicant's EP patent application N.86100126.1 filed on January 7, 1986.
- In a following step the cylinder 1 is cold extruded in a special die by means of a cylindrical punch having a smaller cross-sectional area than the
surface 3; thus, causing the material flow laterally and upwards to define abody 5 with acavity 6 of cylindrical shape, and anopening 7 at theend 2. - Thereafter, means such as a die, reduces by striking, as illustrated in Figure 4, a portion of the
body 5 at theend 2, to define a pin. 8, of open-ended cylindrical shape having aninner cavity 9 with the same shape and an opening 10 at its terminatingend 11. - The
pin 8 has a smaller outside diameter than thebody 5, between the two of them there being created a flatannular base 12. - The next step envisages the press fitting of a shaped body at the opening 10 of the
pin 8; that body is composed, in the preselected embodiment, of aball 13 with a slightly larger diameter than the opening 10, though obviously, any other shaped body may be used which can be adapted for sealing the opening 10 of thepin 8 and providing a bearing of low frictional resistance for a female element. - The
ball 13, which is press fitted, is formed preferably from hardened steel, which causes theend 11 of thepin 8 to yield, creating in that step the housing seat; the fitting of theball 13 into the opening 10 is, moreover, carried out so as to let a part of the curved surface of the ball project relatively to the terminatingend 11 of thepin 8. - Expediently, the die which may be used to fit the ball into the
end 11, advantageously defines a bevel which is adapted to squeeze the peripheral edges of theend 11 onto the lateral curved surface of theball 13, this forming an aesthetic surface finish whilst completely sealing thepin 8. - Thus, there is defined an
end 14 of substantially hemispherical shape, merging with the outerlateral wall 15 of thepin 8, and sealing thecavity 9 of the same so as to prevent the liquid from entering during the next step of immersion into galvanic baths for the necessary successive treatment steps. - Thus, the
end 14 becomes the terminating end of thepin 8 on which the flat, internal end of thefemale element 16, bears and turns with a very low coefficient of friction due to its small area of surface contact afforded by virtue of the carved terminating end of the pin. - The female element has a
cylindrical body 17 defining at an internal portion thereof aseat 19, shaped to substantially correspond to.the shape of thepin 8 of themale element 18, with necessary clearance, the depth of itsseat 19 being slightly smaller than the length of thepin 8 itself, such that the flat end of theseat 19 bears directly onto theball 13, and thus leaving a slight clearance between the end of the female element and theannular shoulder 12 of the male element. - With each of the
lateral surfaces bodies means 22 adapted to associate thehinge 23 with the casings, said means being composed for example of an outside threaded shank. - Thus, the
hinge 23, given the shape of thepin 8 and theseat 19, has the feature of working on the end. 14 and not on thebase 12. - This improves the functional aspect because rotation is improved and the pivot point, formed by the
end 14, is protected, inside thefemale element 16, against any outside atmospheric agents. - The
male element 18, being hollow, lowers the manufacturing costs by decreasing the amount of raw material used. - The automatic insertion of the
ball 13, defining theend 14, closes thecavity 9 and, accordingly, prevents the liquid present in successive galvanic treatment vats from entering the interior of themale element 18 and thus eliminating the risk of the introduction of any foreign bodies thereinto. - It has thus been ascertained that the method of forming a sealed hollow male hinge element for hinge devices achieves all the objects set forth above, affording reduced manufacturing costs and improving, at the same time, the functional aspect of the products
- Of course, the invention herein is susceptible to many modifications and changes, which fall within the scope of the same inventive concept.
- Thus, for example, in the step of cold extruding by impact the cylinder 1 there may be obtained, at the
end 4, a tang projecting according to the same mid-longitudinal axis, that tang being adapted to be later molded into any desired aesthetic shape. - Furthermore, the shaped body fittable over the opening of the pin's open end may be a nail-like element with a larger diameter shank than that of the
cavity 9 and whose head, preferably of hemispherical shape, serves as an optimum pivot point for the base of theseat 19 of the female, cr that body may comprise a hardened steel cylinder of larger diameter than thecavity 9, also acting as a pivot pin for the female. - Of course, also the materials used and the dimensions may be any ones contingent on requirements.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT82510/85A IT1202019B (en) | 1985-02-04 | 1985-02-04 | PROCEDURE FOR OBTAINING A HINGE WITH MALE CABLE WATERPROOF |
IT8251085 | 1985-02-04 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0190636A2 true EP0190636A2 (en) | 1986-08-13 |
EP0190636A3 EP0190636A3 (en) | 1986-10-01 |
EP0190636B1 EP0190636B1 (en) | 1990-09-26 |
Family
ID=11318063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86101044A Expired - Lifetime EP0190636B1 (en) | 1985-02-04 | 1986-01-27 | Method of manufacturing male elements for hinge devices |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0190636B1 (en) |
DE (1) | DE3674424D1 (en) |
ES (1) | ES292092Y (en) |
IT (1) | IT1202019B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2016204754B2 (en) * | 2015-07-10 | 2021-07-22 | Lance Malcolm Vater | An improved hinge assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE2916560A1 (en) * | 1979-04-24 | 1980-11-06 | Scharwaechter Gmbh Co Kg | Motor vehicle door pin-less hinge - is produced by pressing spherical members of one hinge part into axial bores of another hinge part |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
-
1985
- 1985-02-04 IT IT82510/85A patent/IT1202019B/en active
-
1986
- 1986-01-27 DE DE8686101044T patent/DE3674424D1/en not_active Expired - Lifetime
- 1986-01-27 EP EP86101044A patent/EP0190636B1/en not_active Expired - Lifetime
- 1986-02-03 ES ES1986292092U patent/ES292092Y/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE2916560A1 (en) * | 1979-04-24 | 1980-11-06 | Scharwaechter Gmbh Co Kg | Motor vehicle door pin-less hinge - is produced by pressing spherical members of one hinge part into axial bores of another hinge part |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2016204754B2 (en) * | 2015-07-10 | 2021-07-22 | Lance Malcolm Vater | An improved hinge assembly |
Also Published As
Publication number | Publication date |
---|---|
EP0190636B1 (en) | 1990-09-26 |
ES292092U (en) | 1986-06-01 |
IT8582510A0 (en) | 1985-02-04 |
ES292092Y (en) | 1987-02-16 |
DE3674424D1 (en) | 1990-10-31 |
IT1202019B (en) | 1989-02-02 |
EP0190636A3 (en) | 1986-10-01 |
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