• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A flat spring structure for magnetic tape cassettes, in particular video cassettes, which comprises an elastic lamina (1) of elongate conformation which is coupleable at a middle portion thereof with the cover (5) of a cassette and which acts, proximate to its free end (2) on the central pivot (6) of the reels (7) supporting a magnetic tape. The peculiarity of the invention is constituted by the fact that the lamina (1) at the side thereof facing the reels (7), has a concave piecewise conformation with at least one fold line (10) in the portion defined between the free end and the zone of coupling with the cover (5). The fold line (10), with the lamina (1) inserted into the cassette, engages by contact with the cover (5) to define a fulcrum point for elastic oscillation of said lamina (1).
    公开号:SU1655307A3
    申请号:SU874203935
    申请日:1987-12-22
    公开日:1991-06-07
    发明作者:Бординьон Абрамо
    申请人:А.Т.Б. С.П.А. (Фирма)；
    IPC主号:
    专利说明:


    and
    The invention relates to instrumentation, in particular to a technique for storing information on a movable tape carrier.
    The purpose of the invention is to simplify the design.
    FIG. 1 shows a flat spring, top view; in fig. 2 - then
    same, longitudinal section; in fig. 3 installation of a flat spring in a video cassette; in fig. 4 - flat spring - in working condition of the cassette; in fig. 5 - a spring, one part of which has an edge of one type, and the second part has an edge of another type, a general view; in fig. 6 - flat spring with ribs, axonometric; in fig. 7 - the same, longitudinal section; in Fig. 8, a flat spring with ribs inserted into a video cassette is in a quiescent state; n FIG. 9 - the same, in working condition.
    The flat spring design comprises an elastic plate 1 of elongated shape in the form of a ribbon of constant width which is rounded off at the ends 2.
    In the central part of the resilient plate 1 has through holes 3 for connection with the fastening elements 4 to the cassette cover 5.
    The plate is inserted into the cassette and is connected to the lid 5, acting on the hinge 6 of the reel 7, which is a-. installed for rotation inside the video cassette container 8.
    The resilient plate 1, when viewed from the end, has a configuration of a convex broken line, which is determined by a line (9, 10) of the bend made in the middle part between the free end of the spring and the area where the hole 3 is made for connection with the cover 5.
    Under specific conditions of application, it is possible to make the starting line 11, close to the hole 3, at a distance of approximately one sixth of the distance between the hole 3 and the end of the plate in contact with the hinge point 6.
    With this plate configuration (see Figs. 3 and 4), when the plate is inserted into the cassette, the bend line 10 is in contact with the inner surface of the cover, the xtero is provided with a fulcrum with a reduced lever arm for elastic plate oscillation.
    0
    0
    five
    thirty
    35
    40
    45
    50
    55
    In addition, in the area of contact with the hinge 6, the plate itself is parallel to the lid 5, thereby creating a force which is directed along the axis of the reel /.
    As for the moment diagram, it reaches a maximum point on the inflection line 10 at a value that is significantly less than the maximum moment point of the traditional flat springs, since due to the fact that the acting forces are equal, the lever arm is reduced by half.
    In addition, the moment diagram is inverted in the part between the point of contact between the plate and the cover and the hinge area so that a moment with the opposite sign in the hole 3 is obtained.
    This fact is very important because, due to a significant reduction in moments balanced by a flat spring, it is possible, with an equal elastic force on the hinge of the reel, to significantly reduce the thickness and width of the plate and significantly reduce the amount of material used to manufacture the plate.
    As shown in FIG. 5-9, the flat spring design for tape cassettes, in particular video cassettes, contains an elastic plate 12, which has an elongated shape, the width of which is constant along its entire length. . The plate 12 can be inserted into the video cassette so that its free ends, where the rounded portions 13 are made, act by contact in the hinge 6, the reel 7.
    In its middle part, the elastic plate 12 is provided with a through hole 14 of connection with the inner surface of the cover 5 of the video cassette.
    The ribs 15 run along the plate, starting from the area where the hole 14 is made, and income to the vicinity of the contact zone with the hinge 6.
    Between the zone where the hole 14 is made and the end of contact with the hinge 6, at least one bend 16 is made, so that this plate takes the configuration of a broken line concave on the side facing the reel 6.
    In addition, it is possible to further reduce the thickness and width of the plate for the fact that this plate is provided
    516
    edge 15, which creates an additional-stiffness plate.
    权利要求:
    Claims (2)
    [1]
    1. Flat spring design for video tapes with magnetic tape, comprising an elongated elastic plate with a hole in its middle part for attachment with the cassette cover while the free ends of the plate are in sliding contact with the axis of rotation of the reels on which the magnetic tape is held, characterized in that, in order to simplify the construction, the elastic plate is made in the form of a convex piecewise-linear generator with several transverse kink lines located between its free end and its opening laziness line from the free end of the first bend away from the axis of rotation of the bobbin by a distance which is less than the distance - between the contact point with the axis bo
    0
    3
    five
    five
    0
     6
    A bin and a mounting hole with a cassette lid, and the initial bending line of the plate is located at a distance equal to one part of the distance between the axis of the hole for its attachment and the point of contact of the elastic plate with the axis of rotation of the reel, while the flat spring throughout width with roundings of equal radius at its free ends.
    I
    [2]
    2. A structure according to claim 1, wherein the elastic plate contains at least o, g, but a stiffener along one of its longitudinal parts, the width of which decreases from the opening for attaching the plate with the cassette cover towards the free ends of the plates, in this case, the bend of the plate with the edge has the shape of a concave line and is made half the distance between the axis of the hole for attachment with the cassette cover and the axis of rotation of the reel.
    eleven
    ten
    FIG. 2
    Chlg
    f
    ABOUT
    FIG $
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1655307A3|1991-06-07|Flat spring design for magnetic videotape cassettes
    US4662579A|1987-05-05|Coined reel leaf spring for a video tape cassette
    CA1148654A|1983-06-21|Magnetic recording tape cassette
    US4770367A|1988-09-13|Magnetic tape cassettes
    US4304374A|1981-12-08|Tape cassette
    US5365638A|1994-11-22|Spring mounting for sash frame tensioning arrangements
    US4780782A|1988-10-25|Magnetic tape backing leaf spring particularly for magnetic tape cassettes
    US4629144A|1986-12-16|Tape cassette having one or more pressure springs, and a pressure spring for this purpose
    US4518135A|1985-05-21|Slack limiter for a magnetic tape cassette
    US4405097A|1983-09-20|Cassette with a slack limiter tab
    US4719992A|1988-01-19|B-motor with floating locking plug
    KR960011793B1|1996-08-30|Magnetic tape cassette with easily assembled lid spring
    US4773615A|1988-09-27|Magnetic tape cassettes
    EP0086625B1|1986-05-07|Tape cassette
    US4670809A|1987-06-02|Door hinge for a videocassette
    US4974791A|1990-12-04|Magnetic tape cassettes
    KR930000079B1|1993-01-08|Video cassette
    US4130221A|1978-12-19|Torsion spring door for a videocassette
    US5177838A|1993-01-12|Fastener for magnetic tape cartridge and method of use thereof
    US3208688A|1965-09-28|Tape reel
    US5216563A|1993-06-01|Reel spring structure for a video tape cassette
    US5263659A|1993-11-23|Reel spring for magnetic tape cassettes
    KR910009549A|1991-06-28|Single piece tape reel
    US4286300A|1981-08-25|Tape cassette
    KR970005062Y1|1997-05-22|Video tape cassette
    同族专利:
    公开号 | 公开日
    BR8706918A|1988-07-26|
    YU235887A|1989-10-31|
    ES2035024T3|1993-04-16|
    CA1300259C|1992-05-05|
    DE3782017T2|1993-02-18|
    HK217396A|1996-12-27|
    PT86404B|1993-08-31|
    MX172177B|1993-12-07|
    CN1010135B|1990-10-24|
    CN87101218A|1988-07-06|
    EP0272556B1|1992-09-30|
    DE3782017D1|1992-11-05|
    GR3006179T3|1993-06-21|
    US4899243A|1990-02-06|
    US4899243B1|1992-10-13|
    EP0272556A3|1989-08-23|
    PT86404A|1989-01-17|
    JPH0287382A|1990-03-28|
    EP0272556A2|1988-06-29|
    JP2565520B2|1996-12-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE203302C|
    JPS5731225B2|1979-11-16|1982-07-03|
    EP0030367A1|1979-12-06|1981-06-17|Hitachi Maxell Ltd.|Magnetic recording tape cassette|
    JPS6215906Y2|1980-07-28|1987-04-22|
    EP0060497B1|1981-03-11|1985-10-02|Hitachi Maxell Ltd.|Magnetic recording tape cartridge|
    JPS6339992B2|1981-12-29|1988-08-09|Iwata Electric Works|
    JPS5945787U|1982-09-17|1984-03-27|
    JPS5950083U|1982-09-22|1984-04-03|
    DE8335294U1|1983-12-09|1984-03-22|Basf Ag, 6700 Ludwigshafen|Pressure spring for tape cassettes and tape cassettes with it|
    DE8335295U1|1983-12-09|1984-05-03|Basf Ag, 6700 Ludwigshafen|PRESSURE SPRING FOR TAPE CASSETTES|
    JPH0750547B2|1984-02-10|1995-05-31|松下電器産業株式会社|Tape cassette|
    DE8418179U1|1984-06-15|1985-01-31|Basf Ag, 6700 Ludwigshafen|TAPE CASE WITH PRESSURE SPRING|
    DE8418178U1|1984-06-15|1985-01-03|Basf Ag, 6700 Ludwigshafen|TAPE CASSETTE, IN PARTICULAR VIDEO MAGNETIC TAPE CASSETTE WITH AT LEAST ONE PRESSURE SPRING|
    JPH0320953Y2|1984-08-29|1991-05-07|
    US4662579A|1985-08-16|1987-05-05|Shape Inc.|Coined reel leaf spring for a video tape cassette|
    US4770367A|1987-03-25|1988-09-13|Carroll William M|Magnetic tape cassettes|US5263659A|1987-03-25|1993-11-23|The Koller Group, Inc.|Reel spring for magnetic tape cassettes|
    US4773615A|1987-03-25|1988-09-27|Carroll William M|Magnetic tape cassettes|
    DE9013321U1|1990-03-16|1990-11-22|Seung Kyong Elektronics Co., Ltd., Kyunggi-Do, Kr|
    DE8903934U1|1989-03-31|1989-08-24|Basf Ag, 6700 Ludwigshafen, De|
    CA2012911A1|1989-04-26|1990-10-26|James E. Skavnak|Insertable tape cartridge for videocassette|
    US5121276A|1989-04-26|1992-06-09|Minnesota Mining And Manufacturing Company|Insertable tape cartridge for videocassette having a reel restraining member|
    GB2235180B|1989-08-30|1993-09-22|Gold Star Co|Reel supporting leaf spring of a video tape cassette|
    KR910007876Y1|1989-09-16|1991-10-07|주식회사 에스 케이 씨|Reel supporting spring of video tape cassette|
    US5110228A|1989-12-20|1992-05-05|Mitsubishi Kasei Corporation|Cassette with a loosening prevention mechanism|
    US5005780A|1990-01-02|1991-04-09|Koller Manufacturing Corporation|Reel spring for magnetic tape cassettes|
    JP2626129B2|1990-02-21|1997-07-02|松下電器産業株式会社|Tape cassette|
    US5332172A|1990-08-06|1994-07-26|Minnesota Mining And Manufacturing Company|Tapered reel pressure spring|
    KR920005944Y1|1990-09-18|1992-08-27|유한전자 주식회사|Reel spring structure of vidio tape|
    JP2564572Y2|1991-08-23|1998-03-09|富士写真フイルム株式会社|Magnetic tape cassette|
    KR940006340B1|1992-01-10|1994-07-18|한국과학기술원|Linear polarizer|
    JP2576846Y2|1992-06-04|1998-07-16|ティーディーケイ株式会社|Tape cassette|
    US5484117A|1994-03-31|1996-01-16|Minnesota Mining And Manufacturing Company|Reel spring for a thin-walled videocassette|
    CN1051163C|1994-08-09|2000-04-05|贾森有限公司|Coated magnetic tape cassette spring|
    US6910656B2|2003-02-20|2005-06-28|Eastman Kodak Company|Ink ribbon cartridge with leaf spring and method of assembling the same|
    KR101088198B1|2008-02-06|2011-11-30|파나소닉 주식회사|Plasma display device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT2421986U|IT210553Z2|1986-12-23|1986-12-23|LAMINA SPRING STRUCTURE FOR MAGNETIC TAPE BOX, IN PARTICULAR VIDEO CASSETTE.|
    IT2421886U|IT210573Z2|1986-12-23|1986-12-23|LAMINA SPRING STRUCTURE FOR MAGNETIC TAPE BOXES, IN PARTICULAR VIDEO CASSETTES.|
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