EP0305953A2 - Verstärkter Plastikschlüsselschaft - Google Patents

Verstärkter Plastikschlüsselschaft Download PDF

Info

Publication number
EP0305953A2
EP0305953A2 EP88114070A EP88114070A EP0305953A2 EP 0305953 A2 EP0305953 A2 EP 0305953A2 EP 88114070 A EP88114070 A EP 88114070A EP 88114070 A EP88114070 A EP 88114070A EP 0305953 A2 EP0305953 A2 EP 0305953A2
Authority
EP
European Patent Office
Prior art keywords
key
plastics material
insert
shank
molded
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
EP88114070A
Other languages
English (en)
French (fr)
Other versions
EP0305953B1 (de
EP0305953A3 (en
Inventor
Robert E. Almblad
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.)
Mitsubishi Corp
Original Assignee
Axxess Entry Technologies Inc
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 Axxess Entry Technologies Inc filed Critical Axxess Entry Technologies Inc
Priority to AT8888114070T priority Critical patent/ATE105044T1/de
Priority to EP93106063A priority patent/EP0553900B1/de
Publication of EP0305953A2 publication Critical patent/EP0305953A2/de
Publication of EP0305953A3 publication Critical patent/EP0305953A3/en
Application granted granted Critical
Publication of EP0305953B1 publication Critical patent/EP0305953B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/26—Use of special materials for keys
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00—Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C11/32—Bags or wallets for holding keys
    • A45C11/325—Spare-key holders
    • A45C11/326—Card-like holders
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1635—Use of special materials for parts of locks of plastics materials

Definitions

  • Conventional metal keys for operating tumbler locks such as in automobiles, building doors, apparatus controls, and the like, have heretofore been generally constructed throughout the shank and bit portions, and generally the handles, or head portion of a uniform thickness common with the bit thickness. Molded plastic keys have also heretofore been constructed of substantially uniform thickness throughout their length similar to comparable metal keys.
  • a molded key constructed from a plastics material having a handle, a shank and a bit, and in which the shank is reinforced against breakage due to unusual torque applied through the key handle when resistance to turning is encountered after the bit is inserted into a lock.
  • the key 10 has the shank 12 and the bit 13 elongated for reception in a tumbler lock 17 (Fig. 4) having a tumbler barrel cylinder or plug 18 extending from a housing 19 defining a chamber 20 of ample size to accommodate a spring-biased flapper closure 21 which is adapted to be pushed aside by the key from the dash position to the full line position when the key is inserted through an entrance 22.
  • the entrance 22 affords ample clearance to facilitate entry of the key therethrough for reception in a key slot 23 which for practical reasons is fairly closely dimensioned relative to the key bit 13. A tolerance clearance of only about .005 inch is desirable between the bit 18 and the slot 23.
  • the shank is reinforced.
  • reinforcement for the shank 12 may be advantageously provided by an integrally molded thickening 25 of the shank.
  • Such thickening 25 is preferable effective throughout the length of the shank from adjacent to but clear of the proximal area of the bit 13 to be notched.
  • the thickening avoids interference with close reception of the bit 13 in the key slot 23.
  • the thickening 25 is effected about .020 inch on both faces of the shank 12 and extends to at least a limited distance onto the adjacent portion of the handle 11.
  • integral multidirectional hinge means 55 comprising a unitary part of the molding and formed from the same material as the key and the molded card, and integrally connecting an edge of the key head or handle 41 to an edge of the card 54 in the recess 53.
  • the hinge means 55 comprises a generally elongated element which permits the key to be not only swung out of the plane of the card 54 but also to be twisted relative to the card on and about the hinge without breaking away from the card.
  • the hinge 55 comprises a generally rod shaped element which may be of cylindrical cross section and is longer than its diameter. Although the hinge 55 may be of slightly smaller diameter than the thickness of the head 41, as best seen in Fig.
  • the hinge diameter may be slightly greater than the thickness of the card 54.
  • a reinforcement extension 57 extends from the attached end of the hinge 55 onto the adjacent portion of the card 54 and is connected to a reinforcing rib 58 which runs along the edge of the card and stiffens the card in this area against undue flexibility.
  • the insert 113 is designed to be embedded in the key 101.
  • the head 115 of the insert 113 includes an interlock slot 117.
  • the interlock slot 117 functions to ensure that the insert is securely embedded therein.
  • the slot 117 allows the plastics material, from which the key 101 is constructed, to form a mold interlock within the slot 117 securing the insert within the key 101.
  • the fingers 119 and 121 of the insert 113 include extending flange portions 120 and 122, respectively.
  • the flange portions 120 and 122 of the fingers 119 and 121, respectively, are of a reduced thickness as compared to the remaining portions of the fingers 119 and 121.
  • the flange portions 120 and 122 help to ensure that the insert 113 is secured within the key 101.
  • the main portion of the fingers 119 and 121 has a thickness that is approximately the same as the side area 107 of the shank 111.
  • the rigid insert 113 will not, especially if it is constructed from metal, it is necessary to put a hole 131 and 133 at the end portion of the legs 119 and 121.
  • the holes 131 and 133 allow the plastic to shrink during the molding process and the legs 119 and 121 will slide into the holes. If no holes were provided, stress and warping of the key could possibly occur.
  • suitable material comprises sheet steel stampings such as cold rolled steel which can be hardened if desired, or a C1095 spring steel annealed and hardened to 55-57 Rockwell prior to molding in place in the plastic keys.
  • the key 101 can be utilized independently and retained, if desired, on a key ring or like retaining apparatus, the key 101 can be part of a plastics material card/key combination 151. To this end, the key 101 is located within a complementary recess 153 within a substantially card shape holder 154. Although only one key 101 is illustrated as being located within the holder 154 if desired two or more keys can be located therein.
  • the hinge means 155 comprises a generally elongated element that permits the key 101 to not only be swung out of a plane of the card 154 but also to be twisted relative to the card, on or about the hinge means 155, without breaking away from the card 154.
  • the key 161 is not only constructed from a plastics material but also includes a fibrous reinforcement 162 molded therein.
  • the fibrous reinforcement 162 adds strength to the key 161, and specifically the shank 163 of the key.
  • the fibrous reinforcement provides a resistance to torque breakage when the key 161 encounters resistance when it is inserted in a lock and twisted.
  • Some fibrous reinforcement material that can be utilized to strengthen the key 161, and specifically the shank 163, include: Kevlar aramid fibers; carbon fibers; glass fibers; thermoplastic fibers, such as polyester and nylon; and hybrid composites such as aramid/carbon, aramid/glass, aramid/carbon/glass, and carbon/glass.
  • the fibers can be directionally oriented or randomly oriented depending on the molding process chosen for constructing the key 161.
  • the key 201 can be, if desired, part of a plastics material card/key combination 251. To this end, the key 201 is located in a complementary recess 253 within a substantially card-shaped holder 254. Of course, although only one key 201 is illustrated as being located within the holder 254, if desired, two or more keys can be located therein.
  • an integral multi-­directional hinge means 255 is provided.
  • the hinge means 255 includes a unitary part of the molding and is preferably formed from the same material as at least a portion of the key 201 and the card 254.
  • the hinge means 255 integrally connects an edge of the key head 233 or handle to an edge of the card 254 in the recess 253.
  • the hinge means 255 comprises an elongated element that allows the key 201 to be swung out of the plane of the card 254 and also twisted relative to the card without breaking away from the card.
  • the key includes a head portion 215, shank portion 211, and a bit portion 203.
  • a rigid insert 213 is embedded within portions of the head 215 and shank 211 of the key 201.
  • the rigid insert 213 reinforces the shank 211 against breakage due to torque when the key 201 is inserted in a slot of a tumbler and twisted and unusual resistance is encountered.
  • the key 201 includes an opening or slot 271 in the head 215 thereof.
  • the slot 271 provides two functions.
  • the slot 172 functions to provide a shelf for supporting the rigid insert 213 within the mold prior to, and during, the molding of the plastics material around the rigid insert 213.
  • the slot 271 functions to stress relieve the key 201 by providing an opening or path through which the rigid insert 213 can move as the plastics material shrinks. Accordingly, as the plastic shrinks, the rigid insert 213 will be forced upwardly into the slot 271 substantially preventing the key 201 from deforming. As illustrated in Figure 40a, if desired the slot 271 does not have to extend through the thickness of the key but can be a groove that does not extend through the entire thickness of the key.
  • the side members 241 and 243 of the rigid insert 213 are offset from each other from a front end to a back end of the rigid insert 213. This provides a means for ensuring that the rigid insert 213 easily slides, or moves, upwardly, towards the head 215 of the key 201 within the plastics material as the key cools after molding.
  • the rigid insert 213 illustrated in Figs. 31-­35 has been found to be especially adapted for use in a house key.
  • the plastics material key 301 includes a head portion 315, shank portion 311, and bit portion 303.
  • a rigid insert 313 for reinforcing the shank is embedded within a portion of the head 315 and the shank 311 of the plastics material key 301.
  • the head 315 includes a slot 371 or hole that provides means for supporting the insert 313 during molding. The slot 371 further functions to provide means for stress relieving portions of the key adjacent the insert 313 so that the key 301 does not substantially deform as the plastics material of the key cools after molding.
  • the embodiment of the rigid insert 313 illustrated has as a substantially Z-shaped cross-section.
  • the rigid insert 313 includes a body protion 314 having extending side portions 341 and 343 having a reduced cross-sectional thickness. These side portions 341 and 343 are located in planes offset from each other with respect to a thickness of the shank 311. Accordingly, the side portions 341 and 343 can be received within reduced thickness offset side portions 319 and 321 of the molded plastics material key 301. This construction allows the rigid insert 313 to be utilized with keys that have longitudinal side areas that do not lie within the same horizontal plane.
  • the insert 413 includes a body member 414.
  • the body member 414 does not include side portions having a reduced cross-­sectional thickness, lying in different planes. Instead, the sidewalls 441 and 443 of the insert 413 lie in the same thickness plane. In certain applications, it may be desirable to use such a rigid insert 414.
  • a semicircular cut-out portion 474 is provided at a front of the rigid insert 413.
  • the cut-out portion 474 provides means for cooperating with a locater pin to position the rigid insert 413 within a mold cavity.
  • the rigid insert 513 is somewhat similar to the rigid insert 313 illustrated in Figs. 36-38, but differs in that the width of the rigid insert 513 is smaller than that of the rigid insert 313 of Fig. 37.
  • the center portion of the insert, the thickest portion has a substantially smaller width than the center portion of the rigid insert 313 of Fig. 37.
  • the key 501 includes means for stress relieving portions of the key adjacent the insert 513.
  • the means includes a groove 571 that does not extend through the entire thickness of the key 501.
  • a second portion 620 of the rigid insert 613 Located at a tip 612 of the bit 603 of the key 601 is a second portion 620 of the rigid insert 613.
  • This portion 620 of the rigid insert 613 reinforces the tip of the key to prevent the tip 618 from breaking due to any torque that is exerted on the tip 618 when the tip 618 actuates the lock.
  • the second portion 620 of the rigid insert 613 has a cross-sectional shape that substantially corresponds to the cross-sectional portion of the tip 612 of the bit 603 within which it is received.
  • the second portion 620 of the rigid insert 613 is embedded in a portion of the bit 603 wherein the sides of the bit are not notched.
EP88114070A 1987-09-03 1988-08-29 Verstärkter Plastikschlüsselschaft Expired - Lifetime EP0305953B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT8888114070T ATE105044T1 (de) 1987-09-03 1988-08-29 Verstaerkter plastikschluesselschaft.
EP93106063A EP0553900B1 (de) 1987-09-03 1988-08-29 Verstärkter Plastikschlüsselschaft

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US216763 1980-12-15
US9149287A 1987-09-03 1987-09-03
US91492 1987-09-03
US15588488A 1988-02-16 1988-02-16
US155884 1988-02-16
US21676388A 1988-07-08 1988-07-08

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP93106063.6 Division-Into 1988-08-29

Publications (3)

Publication Number Publication Date
EP0305953A2 true EP0305953A2 (de) 1989-03-08
EP0305953A3 EP0305953A3 (en) 1990-06-13
EP0305953B1 EP0305953B1 (de) 1994-04-27

Family

ID=27376915

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88114070A Expired - Lifetime EP0305953B1 (de) 1987-09-03 1988-08-29 Verstärkter Plastikschlüsselschaft
EP93106063A Expired - Lifetime EP0553900B1 (de) 1987-09-03 1988-08-29 Verstärkter Plastikschlüsselschaft

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP93106063A Expired - Lifetime EP0553900B1 (de) 1987-09-03 1988-08-29 Verstärkter Plastikschlüsselschaft

Country Status (12)

Country Link
EP (2) EP0305953B1 (de)
JP (1) JPH01146086A (de)
KR (1) KR890005363A (de)
AU (1) AU603250B2 (de)
BR (1) BR8804530A (de)
CA (1) CA1334797C (de)
DE (2) DE3889266T2 (de)
MX (1) MX172828B (de)
NZ (1) NZ225897A (de)
PL (1) PL274407A1 (de)
PT (1) PT88419A (de)
YU (1) YU168788A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136869A (en) * 1991-03-29 1992-08-11 Best Lock Corporation High security key and cylinder lock assembly
US5272895A (en) * 1991-03-29 1993-12-28 Best Lock Corporation High security key and cylinder lock assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101103079B1 (ko) * 2009-04-08 2012-01-06 이문태 못 제조기의 펀칭 장치

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031677B (de) * 1953-04-22 1958-06-04 Heinz Roesinger Schluessel fuer Tuerschloesser od. dgl.
DE1789132U (de) * 1959-02-20 1959-05-21 Hermann Weis Kunststoffschluessel.
DE1901655U (de) * 1964-06-23 1964-10-01 Krause Kg Robert Schluessel aus kunststoff, insbesondere fuer moebelschloesser.
GB1229830A (de) * 1967-08-15 1971-04-28
DE2037071A1 (de) * 1970-07-27 1972-02-03 Strohschnitter & Co, 2000 Hamburg Schlüssel
DE3518354A1 (de) * 1985-05-22 1986-11-27 Heinrich Winkelhard GmbH & Co KG Plastik- u. Metallwarenfabrik, 4708 Kamen Verfahren zur herstellung von schluesseln oder von schluesselrohlingen fuer schloesser
US4637236A (en) * 1984-06-12 1987-01-20 Almblad Donald F Key and retainer card combination
US4677835A (en) * 1986-04-10 1987-07-07 Donald Almblad Plastic card/key combination and hinge structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653492A (en) * 1951-08-10 1953-09-29 Curtis Ind Inc Bimetallic key blank
DE1669387U (de) * 1953-04-22 1953-12-31 Heinz Roesinger Schluessel fuer tuerschloesser od. dgl.
US4737236A (en) * 1986-09-08 1988-04-12 M/A-Com, Inc. Method of making microwave integrated circuits

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031677B (de) * 1953-04-22 1958-06-04 Heinz Roesinger Schluessel fuer Tuerschloesser od. dgl.
DE1789132U (de) * 1959-02-20 1959-05-21 Hermann Weis Kunststoffschluessel.
DE1901655U (de) * 1964-06-23 1964-10-01 Krause Kg Robert Schluessel aus kunststoff, insbesondere fuer moebelschloesser.
GB1229830A (de) * 1967-08-15 1971-04-28
DE2037071A1 (de) * 1970-07-27 1972-02-03 Strohschnitter & Co, 2000 Hamburg Schlüssel
US4637236A (en) * 1984-06-12 1987-01-20 Almblad Donald F Key and retainer card combination
DE3518354A1 (de) * 1985-05-22 1986-11-27 Heinrich Winkelhard GmbH & Co KG Plastik- u. Metallwarenfabrik, 4708 Kamen Verfahren zur herstellung von schluesseln oder von schluesselrohlingen fuer schloesser
US4677835A (en) * 1986-04-10 1987-07-07 Donald Almblad Plastic card/key combination and hinge structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5136869A (en) * 1991-03-29 1992-08-11 Best Lock Corporation High security key and cylinder lock assembly
US5272895A (en) * 1991-03-29 1993-12-28 Best Lock Corporation High security key and cylinder lock assembly

Also Published As

Publication number Publication date
DE3889266D1 (de) 1994-06-01
EP0305953B1 (de) 1994-04-27
YU168788A (en) 1990-10-31
PT88419A (pt) 1989-07-31
EP0553900A3 (en) 1993-09-01
EP0553900B1 (de) 1997-10-15
DE3856046T2 (de) 1998-02-12
EP0553900A2 (de) 1993-08-04
JPH01146086A (ja) 1989-06-08
DE3856046D1 (de) 1997-11-20
DE3889266T2 (de) 1994-09-22
CA1334797C (en) 1995-03-21
MX172828B (es) 1994-01-17
AU2154788A (en) 1989-03-09
BR8804530A (pt) 1989-04-04
AU603250B2 (en) 1990-11-08
PL274407A1 (en) 1989-05-02
KR890005363A (ko) 1989-05-13
NZ225897A (en) 1991-02-26
EP0305953A3 (en) 1990-06-13

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