公开(公告)号：JPH0562410A

公开(公告)日：1993-03-12

申请号：JP22026191

申请日：1991-08-30

Applicant: SONY CORP

Inventor： FUNAYAMA MASAKAZU

IPC: G11B23/03

Abstract: PURPOSE:To prevent a shutter from running up onto the level difference part of a shutter slide area part due to the release of the engagement of the shutter with the level difference part, even when a disk cassette is dropped by mistake, and an intense impact force is added to the pertinent disk cassette. CONSTITUTION:A shutter 6 is pressed to a level difference part 9 at one side of a shutter slide area part 3 of a case (shell) 5 by the spring force of a shutter spring 10 in order to maintain an opening 4 provided at the pertinent shutter slide area part 3 to be in a closed state. The above mentioned case 5 is equipped with a stopper 11 which prevents the above mentioned shutter 6 from running on to the difference in level difference part 9 at one side of the shutter slide area part 3 by the abutment of a spring locking part 7 provided at the above mentioned shutter 6.

公开(公告)号：JPH0480475B2

公开(公告)日：1992-12-18

申请号：JP33606587

申请日：1987-12-28

Applicant: SONY CORP

Inventor： NEMOTO TSUNEO ,  FUNAYAMA MASAKAZU ,  KOIZUMI OSAMU

IPC: G11B23/03

公开(公告)号：JPS6174187A

公开(公告)日：1986-04-16

申请号：JP19630984

申请日：1984-09-19

Applicant: Sony Corp

Inventor： NEMOTO TSUNEO ,  FUNAYAMA MASAKAZU ,  KOIZUMI OSAMU ,  IGARI KAZUO

IPC: G11B23/03 ,  B29C45/32 ,  G11B23/033 ,  G11B23/113

Abstract: PURPOSE: To reduce the manufacturing man-hour and to improve the dimensional accuracy and shutter strength by forming a punching opening used for forming a guide projection at the rear plate part of a shutter integrally formed from a synthetic resin material.
CONSTITUTION: A shutter 13, where upper and lower face plate parts 14 and 15 and a rear face plate part 16 are formed in one body from a thermosetting synthetic resin which is excellent in elasticity and has the minimal frictional resistance and high strength, has the elasticity in a sectional U-shape. Under the condition where the plate parts 14 and 15 are detached from a case they approach each other by orienting to a free end. Oblong holes are formed on the plate parts 14 and 15, while on the plate part 16 rectangular openings 19 and 20 are formed, and guide projecting stripes 22 and 23 are disposed corresponding to the openings 19 and 20 in such a way that the guide stripes 22 and 23 are enclosed by the openings 19 and 20. Moreover an opening 20 is formed on the plate part 16, and in its vicinity an L-shaped locking projection 24 which projects inside is integrally formed.3.
COPYRIGHT: (C)1986,JPO&Japio

Abstract translation: 目的：通过在由合成树脂材料一体形成的挡板的后板部上形成用于形成引导突起的冲孔，减少制造工时，提高尺寸精度和快门强度。 构成：具有弹性优异且摩擦阻力小，强度高的热固性合成树脂形成一体的上下面板部14,15和后面板部16的挡板13具有 截面U形弹性。 在板部14和15从壳体脱离的状态下，通过定向到自由端彼此接近。 在板部件14和15上形成有长孔，而在板部件16上形成矩形开口19和20，并且引导突条22和23以与开口19和20相对应的方式设置， 22和23由开口19和20包围。此外，在板部16上形成有开口部20，并且在其附近形成有一体地形成在内部的L形锁定突起24。

公开(公告)号：JPH0465477B2

公开(公告)日：1992-10-20

申请号：JP19630984

申请日：1984-09-19

Applicant: SONY CORP

Inventor： NEMOTO TSUNEO ,  FUNAYAMA MASAKAZU ,  KOIZUMI OSAMU ,  IGARI KAZUO

IPC: G11B23/03 ,  B29C45/32 ,  G11B23/033 ,  G11B23/113

公开(公告)号：JPS63271782A

公开(公告)日：1988-11-09

申请号：JP33606587

申请日：1987-12-28

Applicant: SONY CORP

Inventor： NEMOTO TSUNEO ,  FUNAYAMA MASAKAZU ,  KOIZUMI OSAMU

IPC: G11B23/03

Abstract: PURPOSE:To surely and easily attach a shutter spring with an automatic machine by providing a stepped protruded part into an inserting hole formed on the front face of a cassette casing to prevent the omission of a coil spring. CONSTITUTION:A stepped protruded part 25 which forms a slide groove 24 on the inner surface faced to a space 26 of a lower shell 2 is extended further into the space 26 to moor a coil part 12 of a shutter spring 11 at a part where a shutter 8 for upper and lower shells 1 and 2 of a magnetic disk cassette is attached. In this case the part 25 is formed to a trapezoid protruded part including an upper sloping surface 25a and a lower plane 25b shown in a figure. Then the part 12 can be surely and tentatively fixed at the part 25 formed between both shells 1 and 2. As a result, the spring 11 can be easily and surely attached with an automatic machine.

公开(公告)号：JPH0562412A

公开(公告)日：1993-03-12

申请号：JP22026391

申请日：1991-08-30

Applicant: SONY CORP

Inventor： FUNAYAMA MASAKAZU ,  IWAKI YUJI

IPC: G11B23/03

Abstract: PURPOSE:To prevent one side part of a shutter from running up onto the level difference part at one side of a shutter slide area part at the time of sliding the shutter to an opening direction, in a disk cassette in which the shutter is attached to the shutter slide area part of a case (shell) so as to be slidable, and an opening part can be opened and closed. CONSTITUTION:A shutter 6 is attached to a shutter slide area part 3 of a case 5 so as to be slidable, and the shutter 6 is allowed to slide, so that an opening 4 provided in the shutter slide area part 3 can be opened and closed. The shutter 6 is equipped with a stopper 14, and when the shutter 6 is allowed to slide, and the opening 4 is opened, the stopper 14 is abutted to a stopper abutting part 13, so that the shutter 6 can be prevented from further sliding. As the result, one side part of the shutter 6 can be prevented from running up onto a level difference part 16 at one side of the shutter area part 3.

公开(公告)号：JPH0562411A

公开(公告)日：1993-03-12

申请号：JP22026291

申请日：1991-08-30

Applicant: SONY CORP

Inventor： FUNAYAMA MASAKAZU

IPC: G11B23/03

Abstract: PURPOSE:To prevent a shutter from running up onto the level difference part of a shutter slide area part, and not opening, due to the release of the engagement of the shutter with the level difference part, even when a disk cassette is dropped by mistake, and an intense impact force is added to the pertinent disk cassette. CONSTITUTION:A shutter 6 is pressed to a level difference part 9 at one side of a shutter slide area part 3 of a case (shell) 5 by the spring force of a shutter spring 10 in order to maintain an opening 4 provided at the pertinent shutter slide area part 3 to be in a closed state. The shutter 6 is equipped with a stopper 12 which prevents the above mentioned shutter 6 from running on to the top face side of the level difference part 9 at one side of the shutter slide area part 3 by the abutment to a stopper abutting part 11 provided at the case 5.

公开(公告)号：JPH03283155A

公开(公告)日：1991-12-13

申请号：JP8535890

申请日：1990-03-30

Applicant: SONY CORP

Inventor： FUNAYAMA MASAKAZU ,  IWAKI YUJI

IPC: G11B23/03

Abstract: PURPOSE:To prevent the damage of a shutter and the breakage of a storage case when disk cassettes are stacked and to prevent the shutter from being caught at the time of drive loading by forming both outside surfaces of the shutter lower than parts other than shutter slide surfaces of both surfaces of the case. CONSTITUTION:The shutter slide surfaces 4 which are formed lower than other parts are formed in both the surfaces 3b of the case 3 in the direction of insertion into a drive device. Head insertion ports 5 which are exposed in part of a disk are formed in the shutter slide surfaces 4. Further, a shutter guiding groove 8 is formed in the shutter slide surface 4 on the side of a lower shell 3e along the front surface of the case 3. Consequently, the damage of the surface of the shutter 6 of the disk cassette and the damage of the storage case when the disk cassettes 1 are stacked and the catching at the time of drive loading can be prevented.

公开(公告)号：JPS6182395A

公开(公告)日：1986-04-25

申请号：JP20381684

申请日：1984-09-28

Applicant: Sony Corp

Inventor： NEMOTO TSUNEO ,  FUNAYAMA MASAKAZU ,  KOIZUMI OSAMU ,  IGARI KAZUO

IPC: G11B23/03 ,  G11B23/033

Abstract: PURPOSE: To prevent to caulk simultaneously a peripheral part and to prevent to slide to a cassette case at the tongue piece peripheral part, when a protruded part is formed at the tip of the tongue piece by making sufficiently longer the length of the tongue piece of the shutter which is guided to the groove of the cassette case and opens and closes a head inserting hole.
CONSTITUTION: The sufficiently long tongue piece 35, etc., are formed at a shutter 33 which opens and closes the head inserting hole, the top of the tongue piece 35 is bent by caulking of a tool 24 and a protruded part 18, which is guided to the groove 32 of a cassette 2, is prepared. Then, since the tongue 35 is sufficiently long, the peripheral part will not be simultaneously caulked, a sliding to the case 3 of the tongue piece 35 is prevented and the shutter with a good sliding characteristic can be obtained.
COPYRIGHT: (C)1986,JPO&Japio

Abstract translation: 目的：为了防止同时包围周边部分，并且防止在舌片周边部分处滑动到盒壳体，当通过使舌片的长度更长地形成在舌片的尖端处的突出部分 其被引导到盒壳体的凹槽并打开和关闭头插入孔。 构成：足够长的舌片35等形成在打开和关闭头插入孔的快门33上，舌片35的顶部通过工具24和突出部18的铆接而弯曲， 被引导到盒2的凹槽32。 然后，由于舌片35足够长，所以周边部分不会同时被堵塞，因此防止了舌片35的壳体3滑动，并且可以获得具有良好滑动特性的快门。

公开(公告)号：JPH05303863A

公开(公告)日：1993-11-16

申请号：JP13804492

申请日：1992-04-30

Applicant: SONY CORP

Inventor： FUNAYAMA MASAKAZU ,  NEMOTO TSUNEO

IPC: G11B23/00

Abstract: PURPOSE:To enhance the dimensional accuracy of an engaging cylindrical part which hardly cracks and warps at the time of burring. CONSTITUTION:Notches 28 extending in approximately diagonal directions are provided respectively at the four corners of an approximately square prepd. hole 27 to be subjected to burring. The notches 28 are previously provided in the parts where the rate of expansion and contraction at the time of blanking by a die is largest at the time of burring and, therefore, the generation of the crack and warp in these parts are obviated. An engaging cylindrical part 25 having high dimensional accuracy is, therefore, formed and the engaging cylindrical part 25 of a relatively large length in the axial direction is formed.