EP0196599A1 - Method of manufacturing hinge devices and hinge devices obtained thereby - Google Patents
Method of manufacturing hinge devices and hinge devices obtained thereby Download PDFInfo
- Publication number
- EP0196599A1 EP0196599A1 EP86104071A EP86104071A EP0196599A1 EP 0196599 A1 EP0196599 A1 EP 0196599A1 EP 86104071 A EP86104071 A EP 86104071A EP 86104071 A EP86104071 A EP 86104071A EP 0196599 A1 EP0196599 A1 EP 0196599A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pin
- cylindrical
- cavity
- hinge
- 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
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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
- This invention relates to a method of manufacturing hinge devices, and hinge devices obtained thereby.
- hinges the male element of which is internally hollow and sealed, to lighten the structure while lowering production costs.
- That known type has, however, some small drawbacks: first of all, at the upturned and plugged bearing end of the hollow pin, there occurs gradual fatigue of the material, which tends to become further compressed and consequently depressed, which results in the female element of the hinge bearing on the annular base of the male element, thus worsening its operation owing to the increased frictional contact between the elements and the formation of oxides.
- the primary aim of this invention is, therefore, to eliminate the above drawbacks affecting known types, by providing a hinge device having reduced overall cost and in particular reduced material consumption in combination with sealed features, possibly also having the male and female ends suitably machined.
- a further important object is to provide a method which affords a sealed hinge device without implying the addition of sealing bodies of a different material.
- Another important object is to provide a hinge device having a strong and homogeneous pivot point.
- a not'least object is to provide a fully automatic method which can be implemented using ordinary plant and equipment.
- a method of obtaining a hinge device comprising male and female hinge elements with a hollow body, which is characterised in that it comprises the following process steps:
- a hinge device which is characterised in that it comprises a male element having a pin and an inner cavity the end of which is shaped and blocked., said hinge further including a female element also having an inner cavity the end of which is riveted and a seat for the pin, a means being provided for associating the hinge with casings.
- the method comprises a first step of shearing a cylindrical drawn segment, defining a stock, formed from a wire (not shown).
- the material volume making up the stock shall have to be equal, of course, to the volume of the semifinished product obtained with the last step. That stock is upset by striking on a mould in order to obtain a regular cylinder 1 having an end 2 provided with a flat surface 3 and a rounded area 4 at the other end.
- the cylinder 1 is cold extruded in a mould by means of a cylindrical punch having a smaller cross-section than the surface 3; thus, the material is displaced laterally to define a cylindrical body 5 having an inner cavity 6 of the same shape; said cavity 6 is blocked at one end, the other, denoted by the numeral 2, having an opening 7.
- the remote end 10 from the end 2 of the body 5 will present, respectively, a cylindrical element 11 projecting perpendicularly along the longitudinal mid-axis from a flat annular base 12, defining the pin and a second cavity 13, of a lesser size than the cavity 6 of essentially cylindrical shape, formed on a flat base 14 at the longitudinal mid-axis of the body 5, defining the seat for the pin itself.
- the next step of the method provides for either cold or hot upsetting, of both the male 8 and female 9 elements, by successive strikes on the terminating end 15 of the body 5 having the opening 7.
- FIG 3 there is shown an intermediate step where there occurs a first shaping of the walls 16 of the terminating end 15.
- the end step illustrated in Figures 4 and 6, defines an end 17 of essentially undulated shape with a spherical ornamental element 18 at the end which blocks the cavity 6 of the body 5.
- the blocked end 17 thus closed also prevents liquid from entering during the following step of immersion into galvanic baths for the necessary treatment.
- the cavity 13 of the female element 9 is shaped conformingly with the pin of the male element 8, its depth being preferably slightly less than the length of the pin itself in order to have the hinge work and bear on the end of the same and not on the annular base 13, thereby improving the hinge's functional aspect since friction is reduced and the pivot point is protected, within the female element 9 against any outside atmospheric agents.
- a means 21 adapted for associating the elements 8 and 9 forming the hinge with items to be hingedly connected together such as casings, said means being advantageously comprised of an externally threaded shank.
- a solid pin may be formed or one having a partial inner cavity in communication with that of the body.
- the materials used, the dimensions of the hinge and the aesthetic conformation conferred on the end of the same may be any ones contingent on requirements.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
Description
- This invention relates to a method of manufacturing hinge devices, and hinge devices obtained thereby.
- Known are hinges, the male element of which is internally hollow and sealed, to lighten the structure while lowering production costs.
- Such a product and the method for obtaining it are claimed in the European Patent application N. 86100126.1 filed on January 7, 1986 by the same Applicant.
- That known type has, however, some small drawbacks: first of all, at the upturned and plugged bearing end of the hollow pin, there occurs gradual fatigue of the material, which tends to become further compressed and consequently depressed, which results in the female element of the hinge bearing on the annular base of the male element, thus worsening its operation owing to the increased frictional contact between the elements and the formation of oxides.
- In the instance, moreover, where it was desired to impart to the male element a particular decorative shape, it was possible to form during the second extrusion step a tang, to be later machined as required.
- However, also in this case, there is a drawback due to the cost of the additional material involved in providing a tang for further machining.
- The primary aim of this invention is, therefore, to eliminate the above drawbacks affecting known types, by providing a hinge device having reduced overall cost and in particular reduced material consumption in combination with sealed features, possibly also having the male and female ends suitably machined.
- A further important object is to provide a method which affords a sealed hinge device without implying the addition of sealing bodies of a different material.
- Another important object is to provide a hinge device having a strong and homogeneous pivot point.
- A not'least object is to provide a fully automatic method which can be implemented using ordinary plant and equipment.
- These and other objects are achieved, according to one aspect of the invention, by a method of obtaining a hinge device comprising male and female hinge elements with a hollow body, which is characterised in that it comprises the following process steps:
- a) shearing a cylindrical drawn segment;
- b) cold impact extruding said cylindrical segment by means of a punch adapted to cause the material to flow laterally up to provide a constant pattern hollow body having at least one open end, on the other end there being formed instead a pin and an open cavity of a lesser size;
- c) upsetting in succession a portion of said hollow body from the open end by impact from a die defining an undulated conformation;
- d) blocking the previously upset open end by upsetting;
- e) surface finishing the hinge elements thus formed.
- According to another aspect of the invention there is provided a hinge device which is characterised in that it comprises a male element having a pin and an inner cavity the end of which is shaped and blocked., said hinge further including a female element also having an inner cavity the end of which is riveted and a seat for the pin, a means being provided for associating the hinge 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 drawings, where:
- figure 1 shows the cylindrical drawn segment;
- Figures 2,3 and 4 show a view taken on a longitudinal section plane of the male element of the hinge device depicted during some steps of the process;
- Figures 5 and 6 depict, in a similar view to the preceding ones, the female element during the steps of the process; and
- Figure 7 is a part-sectional view of the hinge device.
- With reference to the previously mentioned figures, the method comprises a first step of shearing a cylindrical drawn segment, defining a stock, formed from a wire (not shown). The material volume making up the stock shall have to be equal, of course, to the volume of the semifinished product obtained with the last step. That stock is upset by striking on a mould in order to obtain a regular cylinder 1 having an end 2 provided with a flat surface 3 and a rounded area 4 at the other end. In a following step the cylinder 1 is cold extruded in a mould by means of a cylindrical punch having a smaller cross-section than the surface 3; thus, the material is displaced laterally to define a cylindrical body 5 having an
inner cavity 6 of the same shape; saidcavity 6 is blocked at one end, the other, denoted by the numeral 2, having anopening 7. - Depending on whether the method is utilised to make male 8 or femal 9 elements, in this step the remote end 10 from the end 2 of the body 5 will present, respectively, a
cylindrical element 11 projecting perpendicularly along the longitudinal mid-axis from a flatannular base 12, defining the pin and asecond cavity 13, of a lesser size than thecavity 6 of essentially cylindrical shape, formed on aflat base 14 at the longitudinal mid-axis of the body 5, defining the seat for the pin itself. - The next step of the method provides for either cold or hot upsetting, of both the male 8 and female 9 elements, by successive strikes on the terminating
end 15 of the body 5 having theopening 7. - In Figure 3 there is shown an intermediate step where there occurs a first shaping of the
walls 16 of the terminatingend 15. The end step, illustrated in Figures 4 and 6, defines anend 17 of essentially undulated shape with a sphericalornamental element 18 at the end which blocks thecavity 6 of the body 5. - The blocked
end 17 thus closed also prevents liquid from entering during the following step of immersion into galvanic baths for the necessary treatment. Thecavity 13 of the female element 9 is shaped conformingly with the pin of the male element 8, its depth being preferably slightly less than the length of the pin itself in order to have the hinge work and bear on the end of the same and not on theannular base 13, thereby improving the hinge's functional aspect since friction is reduced and the pivot point is protected, within the female element 9 against any outside atmospheric agents. - With each of the
side surfaces means 21 adapted for associating the elements 8 and 9 forming the hinge with items to be hingedly connected together such as casings, said means being advantageously comprised of an externally threaded shank. - By virtue of the fact that the male 8 and female 9 elements are hollow, production costs are lowered by decreasing the quantity of raw material used.
- Upturning and shaping the
end 15 in addition to impart a given appearance to the hinge closes thecavity 6, thereby preventing the liquid present in the successive galvanic baths from entering the hollow elements 8 and 9, without the additional provision of sealing bodies. - Thus it has been shown that the method of forming male and female hinge parts with a hollow body and the thus obtained hinge device achieves all the objects set forth, affording lower costs and concurrently improving the hinge's functional aspect. Of course, the invention herein is susceptible to many modifications and changes within the scope of this same inventive concept.
- Thus, as an example, during the cold extrusion by impact of the cylinder 1, a solid pin may be formed or one having a partial inner cavity in communication with that of the body. Of course, also the materials used, the dimensions of the hinge and the aesthetic conformation conferred on the end of the same may be any ones contingent on requirements.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT41541/85A IT1188517B (en) | 1985-04-05 | 1985-04-05 | PROCEDURE FOR OBTAINING A HINGE WITH MALE AND FEMALE WITH INTERNAL CAVITY |
IT4154185 | 1985-04-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0196599A1 true EP0196599A1 (en) | 1986-10-08 |
EP0196599B1 EP0196599B1 (en) | 1991-04-03 |
Family
ID=11250884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86104071A Expired - Lifetime EP0196599B1 (en) | 1985-04-05 | 1986-03-25 | Method of manufacturing hinge devices and hinge devices obtained thereby |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0196599B1 (en) |
DE (1) | DE3678474D1 (en) |
ES (1) | ES293367Y (en) |
IT (1) | IT1188517B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1544392A1 (en) * | 2003-12-19 | 2005-06-22 | OTLAV SpA | Hinge, particularly to support frames, and method to achieve at least one of its components |
EP2199512A1 (en) * | 2008-12-22 | 2010-06-23 | OTLAV SpA | Hinging element and relative method of manufacture |
CN111250934A (en) * | 2020-03-04 | 2020-06-09 | 平湖永鑫五金制品股份有限公司 | Processing technology of hinge shaft in iron door hinge |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2418046A1 (en) * | 1977-02-28 | 1979-09-21 | Ind Mecca Otlav A Padovan | Furniture hinge fitting mfr. - using two-stage pressing process to form coaxial cylindrical body and pin lengths bounded by radial shoulder |
FR2478720A1 (en) * | 1980-03-21 | 1981-09-25 | Retreint Applic | Decorative furniture door hinge - includes tubular rod with closed ends attached to furniture frame by screws |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
EP0170126A2 (en) * | 1984-07-31 | 1986-02-05 | OTLAV S.p.A. | Hinge device |
-
1985
- 1985-04-05 IT IT41541/85A patent/IT1188517B/en active
-
1986
- 1986-03-25 EP EP86104071A patent/EP0196599B1/en not_active Expired - Lifetime
- 1986-03-25 DE DE8686104071T patent/DE3678474D1/en not_active Expired - Fee Related
- 1986-04-04 ES ES1986293367U patent/ES293367Y/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2418046A1 (en) * | 1977-02-28 | 1979-09-21 | Ind Mecca Otlav A Padovan | Furniture hinge fitting mfr. - using two-stage pressing process to form coaxial cylindrical body and pin lengths bounded by radial shoulder |
FR2478720A1 (en) * | 1980-03-21 | 1981-09-25 | Retreint Applic | Decorative furniture door hinge - includes tubular rod with closed ends attached to furniture frame by screws |
DE3307529A1 (en) * | 1983-03-03 | 1984-09-06 | Walter Birmensdorf Pfäffli | Hinge for fastening a door wing to a door frame |
EP0170126A2 (en) * | 1984-07-31 | 1986-02-05 | OTLAV S.p.A. | Hinge device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1544392A1 (en) * | 2003-12-19 | 2005-06-22 | OTLAV SpA | Hinge, particularly to support frames, and method to achieve at least one of its components |
EP2199512A1 (en) * | 2008-12-22 | 2010-06-23 | OTLAV SpA | Hinging element and relative method of manufacture |
ITUD20080273A1 (en) * | 2008-12-22 | 2010-06-23 | Otlav Spa | HINGING ELEMENT AND ITS IMPLEMENTATION PROCEDURE |
CN111250934A (en) * | 2020-03-04 | 2020-06-09 | 平湖永鑫五金制品股份有限公司 | Processing technology of hinge shaft in iron door hinge |
Also Published As
Publication number | Publication date |
---|---|
DE3678474D1 (en) | 1991-05-08 |
ES293367Y (en) | 1987-04-16 |
ES293367U (en) | 1986-08-01 |
EP0196599B1 (en) | 1991-04-03 |
IT8541541A0 (en) | 1985-04-05 |
IT1188517B (en) | 1988-01-14 |
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