JPS6254882A - Tape cassette - Google Patents

Abstract

PURPOSE:To facilitate a stable loading state of the titled cassette by using the exposed parts provided to respective arms supporting an upper plate covering the upper side of a cassette main body of a front lid freely rotatably against the main body as pressing parts pressing a cassette suppresser provided on the equipment-side. CONSTITUTION:When the titled cassette is loaded, the cassette suppresser 32 presses the cassette suppresser parts 28 provided on the exposed parts 27 of the cassette main body 3 which face to the external through notchings made in the upper plate 10 of the front lid 8. The parts 28 are located so that they face cassette-positioning-pin-engaging holes 25 and 25 as approximately coinciding in position, therefore, the tape cassette is pushed down and supported when the said suppresser 82 and cassette-positioning pins 30 become approximately coinciding in positioning. No parts of the front lid 8 face the exposed parts 27 and 27 on the upper side of the cassette main body 3 which are located between the respective rotatable arms 11 and 11 and the both sides of the upper plate 10 of the front lid 8, therefore such parts 27 and 27 are made to be the pressing parts to be pressed by the cassette suppresser 32 provided on the equipment-side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tape cassette that is provided with a lid that covers a tape body such as a magnetic tape that is pulled out and extended from the front side of the cassette body.

[Conventional technology]

Conventionally, when a tape cassette is installed in a magnetic recording/reproducing device such as a video tape recorder, it is positioned and installed in a predetermined cassette mounting portion provided within the device.

That is, in order to position and mount the tape cassette, the device includes a pair of cassette positioning pins that are inserted into and secured to positioning pin retaining holes provided on the bottom surface of the tape cassette, and a pair of cassette positioning pins that support the bottom surface of the tape cassette. A positioning pin is provided. The tape cassette is supported by each of the positioning pins, and is pressed and supported from the upper surface side by a cassette holding member to be positioned and mounted in the cassette mounting portion.

The above positioning pins are located near the four corners of the tape cassette so that a pair of tape reels on which the tape body is wound are located in the center of the cassette body, and to stably support the tape cassette. installed to support the In particular, the positioning pin retaining holes with which the cassette positioning pins of the tape cassette engage are provided at both corners of the front side, which are positions that do not interfere with tape running.

Furthermore, in a magnetic recording/reproducing device such as a video tape recorder equipped with a rotating magnetic head device, the magnetic tape wound in a tape cassette is pulled out via a tape pull-out mechanism and wound around the rotating magnetic head device. That's what I do. Therefore, in tape cassettes used in this type of magnetic recording/reproducing device, the magnetic tape is wound inside the cassette body with a portion of the tape extending outward from the front side of the cassette body. . For tape cassettes in which a portion of the magnetic tape faces outside the cassette body, an opening/closing lid is provided to cover the magnetic tape facing outside the cassette body in order to protect the magnetic tape during transportation or storage. It is being

In the tape cassette used in the above-mentioned magnetic recording and reproducing apparatus, a recess for entering the tape drawer operation member facing the tape drawer mechanism is formed on the front side where a part of the magnetic tape faces outward. Therefore, if only the front side of the magnetic tape is covered with an opening/closing lid, it is impossible to touch the magnetic tape by touching the magnetic tape by touching the magnetic tape by touching the magnetic tape by touching the tape drawer operation member through the large recess on the back side of the magnetic tape. However, sufficient protection of the magnetic tape cannot be achieved.

Therefore, a front cover that is rotated in conjunction with a front cover that covers the front side of the magnetic tape facing the outside of the tape cassette body and covers the back side of the magnetic tape is provided inside the front cover, and the front cover and the front cover cover the back side of the magnetic tape. A tape cassette is provided which is constructed so that the magnetic tape is sandwiched between the back cover and the cover so that the magnetic tape does not come out at all when the cover is closed.

[Problem that the invention seeks to solve]

The front lid of the tape cassette configured as described above is configured to cover the front side of the cassette body including the recess for the tape drawer operation member to enter, so it covers the entire width of the front side of the tape cassette. The cassette main body has a top plate that faces the top surface of the cassette body. This top plate is also formed to have the same width as the cassette body.

Therefore, the above-mentioned upper surface plate extends and is located above the cassette positioning pin engagement hole with which the cassette positioning pin engages, and this type of tape cassette is attached to the cassette 7) mounting section of the magnetic recording/reproducing device. When mounted, the cassette holding member provided on the apparatus side presses the tape cassette without facing the positioning pin that supports the tape cassette, but with a large displacement. As a result, depending on the pressed position or pressed state of the cassette holding member, the tape cassette may tilt with respect to the cassette positioning pin, making it impossible to stably support the tape cassette horizontally with respect to the reference plane.

Therefore, even in a tape cassette having a front cover with a top plate extending to the top surface of the cassette body, the present invention provides a tape cassette that is stable horizontally with respect to a reference plane without being tilted with respect to the cassette positioning pin. The purpose of this proposal is to provide a tape cassette that can be pressed and supported by a cassette holding member to provide a stable mounting state.

Furthermore, the present invention aims to increase the contact area between the cassette body and the cassette positioning pin, thereby making it possible to perform mounting with more accurate positioning. The purpose of this proposal is to provide a tape cassette that can be accurately positioned and installed even in equipment that performs such operations.

[Means for solving problems]

In order to solve the above-mentioned problems, the first invention is such that a pair of tape reels wound with a tape body are rotatably supported inside, and the tape body is wound between the tape reels. A cassette body in which the tape body extends from the tape body draw-out holes provided on both sides of the front side to the above-mentioned front side, and a recessed portion is provided on the front side into which the tape body drawer operation member enters, and an arm provided on both sides. a front cover which is rotatably attached to the cassette body and covers a tape body which extends to the front side of the cassette body; A back cover that covers the back side of the tape body is provided, and a top plate that covers the top side of the cassette body of the front cover is configured to substantially cover the top side of a recess provided in the cassette body for entering the tape body drawer operation member. The cassette main body is provided with an exposed portion between both sides of the upper surface plate and each of the arm portions, in which a part of the upper surface of the cassette body faces outward.

Further, a second invention provides a tape in which a pair of tape reels wound with tape bodies is rotatably supported inside, and the tape bodies wound between the tape reels are provided on both sides of the front side. A cassette body extending from the body drawer hole to the front side and having a concave portion on the front side into which the tape body drawer operation member enters, and arm portions provided on both sides supported by the cassette body and rotatable. a front cover that is attached to the cassette body and covers the tape body extending to the front side of the cassette body; a rear cover that is rotatably supported within the front cover body and covers the back side of the tape body when the cover is closed; The top plate that covers the top side of the cassette body of the front lid is positioned so as to substantially cover the top side of the recess provided in the cassette body for entering the tape body drawer operation member, and is provided on both sides of the top plate and the top plate. An exposed portion in which a part of the upper surface of the cassette body faces outward is provided between each arm portion, and a cassette positioning pin insertion hole is bored at a position corresponding to the exposed portion.

[Effect]

The first invention provides a cassette 7 in which a top plate of a front cover that covers the upper surface of a cassette body and an exposed portion provided on each arm that rotatably supports the front cover with respect to the cassette body are provided on the apparatus side. ) It serves as a pressing part of the restraining member.

Further, in the second aspect of the invention, since the cassette positioning pin insertion hole is provided in the exposed part where the top plate of the front cover does not face, the cassette positioning pin insertion hole penetrates through the upper and lower surfaces of the cassette body. Therefore, the contact area between the cassette positioning pin and the cassette body can be increased.

〔Example〕

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

This tape cassette according to the present invention has a cassette body 3 constructed by butting and joining a pair of upper half 1 and lower half 2, as shown in FIG. A pair of tape reels 4.4 are rotatably supported on the cassette body 3. A magnetic tape 6, which is a tape body, is wound around these tape reels 4.4. As shown in FIG. 2, the magnetic tape 6 is pulled out of the cassette body 3 through tape body pull-out holes 5.5 provided on both sides of the front side of the cassette body 3, and is drawn out from the front side of the cassette body 3. The tape is extended and wound from one tape reel 4 to the other tape reel 4. Therefore, the magnetic tape 6 is inserted into the cassette main body 3 at the front side portion of the cassette main body 3.
It is facing outside. Also, there is a tape body drawer hole 5.5 on the front side where the magnetic tape 6 of the cassette body 3 faces outward.
At the central part of the front side of the cassette main body 3 at the part f'a"l, there is a tape drawer operation member entrance into which a tape drawer mechanism provided in a magnetic recording/reproducing device such as a video tape recorder to which this tape cassette is installed enters. This recess 7 for entering the tape drawer operation member is formed by recessing the front surface of the cassette body 3, so that it extends between the tape body drawer holes 5 and 5. The back side of the magnetic tape 6 extending from the bottom side of the cassette body 3 is largely opened.

A front cover 8 is rotatably supported on the front side of the cassette body 3 and covers the front side of the magnetic tape 6. This front cover 8, as shown in FIG.
A front plate 9 having a height approximately equal to the thickness of the front part of the cassette body 3, a top plate 10 provided perpendicularly to the upper edge side of the front plate 9, and a top plate 10 on both sides of the front plate 9 and the top plate 10. The rotating arm 11.11 serves as a support for the cassette body 3 provided therein. These rotating arms 11.11 have an arcuate tip end side, and support shafts 12 are installed on the inner surface side so as to face each other.

The front cover 8 is rotatably attached to the front side of the cassette body 3 by engaging the support shaft 12 with engagement holes provided on the outer peripheral surfaces of both side walls of the cassette body 3. A lid lock claw 13 is provided inside the cassette body 3, and when the front lid 8 is closed, it engages with a retaining hole 14 formed in the rotating arm portion 11.11, and locks the front lid 8. Configured to lock.

On the back side of the front cover 8, a back cover 15 whose upper side is inclined as shown in FIG. 4 and whose width is approximately equal to the width of the tape pull-out mechanism entry section 7 is rotatably attached. This back cover 15
is a stepped portion 16.1 provided on both sides of the upper inclined portion.
A pin-shaped pivot portion 17.17 protruding from the front cover 8 is pivoted into a retaining hole 19.19 formed in a support piece 18.18 provided on the back side of the front plate 9 of the front cover 8. It is rotatably attached to the lid 8. At both lower sides of the back cover 15, guide pins 21 and 21 that engage with slide guide grooves 20 provided in the height direction of both opposing walls of the recess 7 for entering the tape drawer operating member are removed. A support arm 22.22 is provided projecting from the side surface. Further, the lower edge of the back cover 15 is provided with the front cover 8 as shown in FIG. 5 when the front side of the cassette body 3 is closed together with the front cover 8.
It abuts against the front cover 8 and positions the rear cover 15 when closing, so as to form a space sufficient to hold the magnetic tape 6 between them, and the lower edge sides of the front cover 8 and the rear cover 15 are A positioning piece 23 for sealing is provided in a protruding manner over the entire width in the width direction.

Moreover, between the support pieces 18 and 18 that support the back cover 15,
A connecting piece 20 is provided which connects these supporting pieces 18,18. Therefore, the rear cover 15 attached to the front plate 8
The upper part is surrounded by the support piece 18.18 and the connecting piece 20, and the upper edge of the upper slope of the back cover 15 is the fifth part.
As shown in the figure, the space in which the magnetic tape 6 is held is
When the lid is closed, it is in a substantially sealed state.

The front cover 8 and the rear cover 15 configured as described above become rotatable and can be opened by releasing the locking claw 13 described above.

Then, when the front surface M8 is rotated around the support shaft 12 to open the lid, the rear surface M15 is also rotated around the pivot portion 17.17 and opened along with the front surface M8. To go. By the way, since the guide pins 21 and 21 of the back cover 15 are engaged with the slide guide groove 20 provided in the cassette body 3, the back cover 15 is regulated by the slide guide groove 20 to be opened.

As shown in FIG. 6, the slide guide groove 20 is formed as a curved cam groove that gradually separates from the front cover 8 from the lower end and approaches the front cover 8 again at the upper end. Therefore, when the lid starts to be opened, the positioning piece 23 of the back lid 15 is separated from the front lid 8. Then, the back cover 15 is opened so that the magnetic tape 6 is exposed to the outside without contacting the magnetic tape 6. Furthermore, the front cover 8
When the lid is opened, the back side 15 is rotated together with the front lid 8 toward the top surface of the cassette body 3 as shown in FIG. 5, opening the front side of the cassette body 3 and making it possible to pull out the magnetic tape 6. .

Incidentally, the top plate 10 of the front cover 8 extending on the top surface of the cassette body 3 is formed in a size large enough to substantially cover the top side of the recess 7 for entering the tape drawer operation member, and when the cover is in the closed state, is positioned to cover the recess 7 for the tape drawer operation member to enter, as shown in FIG. That is, the upper surface plate 10 is cut out on both sides of the rotating arm portion 11.11, and is narrower than the cassette main body 3. Therefore, the front cover 8 is opened.

In this state, as shown in FIG. 1, a portion of the upper surface of the cassette body 3 faces outward through the notches 26.26 between both sides of the upper surface plate 10 and each rotating arm portion 11.11. It is made into an exposed part 27.27. This exposed portion 27.
27 is provided with a concave cassette suppressing portion 28, 28 which is pressed into contact with a cassette suppressing member provided on the apparatus main body side, so that a part of the upper surface of the cassette main body 3 is cut out.

As shown in FIG. 3, on the bottom side of the tape cassette having the front surface II8 and the rear surface Ill5 configured as described above, a reel shaft engaging hole 5a provided in the tape reel 4.4,
5a is exposed, and furthermore, cassette positioning pins are inserted at positions on both sides of the recess 7° for entering the tape drawer operation member on both sides of the front side of the cassette main body 3, and at positions corresponding to the exposed parts 27 and 27. A matching cassette positioning pin insertion hole 25.25 is provided. That is, these cassette positioning bin insertion holes 25, 25 are provided at both corners of the front side of the cassette main body 3, which are positions that do not interfere with tape running.

When the tape cassette configured as described above is installed in a cassette mounting section in a magnetic recording/reproducing device, the cassette positioning pin insertion holes 25, 25 are engaged with the cassette positioning pin 30 as shown in FIG. The bottom surface of the rear surface side is supported by the positioning pin 31, and the cassette restraining part 28 of the upper surface side is pressed by the cassette restraining member 32 to be positioned and supported.

When installed in this way, the cassette holding member 32 is
A cassette holding part 2 is provided in an exposed part 27 of the cassette body 3, which is formed by cutting out a part of the top plate 10 of the front cover 8 and exposing it to the outside.
8 will be pressed. Since this cassette holding part 28 substantially faces the cassette positioning bin engaging hole 25.25, the tape cassette can be held in place by the cassette holding member 3.
2 and the cassette positioning pin 30 are pressed and supported in close proximity to each other and substantially facing each other.

In the embodiment described above, the front cover 8 and the like do not entirely face the exposed portions 27 and 27 on the top surface of the cassette body 3 between both sides of the top plate 10 of the front cover 8 and each of the rotating arms 1'l, 11. Therefore, these exposed portions 27, 27 can be used as a pressing portion of the cassette holding member 32 provided on the apparatus side.

It should be noted that the cassette suppressing portion 28.28 provided on the exposed portion 27.27 does not need to be specially provided as long as the pressure contact of the cassette suppressing member 32 can be maintained.

Further, in the above embodiment, the cassette positioning pin engagement holes 25, 25, into which the cassette positioning pin 3b provided on the apparatus side is inserted and engaged, are provided only in the lower half 2 of the cassette body 3. However, these cassette positioning bin retaining holes 25 and 25 are connected to the front cover 8 as described above.
Exposed portion 27 of the cassette body 3 not covered by the top plate 10 of
．． 27, it is bored through the upper and lower surfaces of the cassette body 3, that is, between the upper and lower halves 1 and 2, as shown in FIGS. 8 and 9.

In the tape cassette configured in this way, the cassette positioning pin 30 provided on the device side can have a length extending between the upper and lower halves 1 and 2 of the cassette body 3, as shown in FIG. .

When the tape cassette is installed, the cassette positioning pin 30 inserts and engages with and supports the cassette body 3 over almost the entire height, and the contact portion of the cassette positioning pin 30 with the cassette body 3 is significantly enlarged. can.

〔Effect of the invention〕

As described above, according to the first invention, the top plate of the front cover that covers the upper surface of the cassette body and the exposed portion provided on each arm that rotatably supports the front cover with respect to the cassette body are connected to the apparatus. By pressing this pressing part with the cassette holding part, the tape cassette is evenly pressed on both sides of the front side, and supports the vicinity facing the cassette positioning pin. Therefore, the cassette is stably supported by the cassette holding member horizontally with respect to the reference plane without causing any inclination with respect to the cassette positioning pin, and a stable mounting state can be obtained.

Further, in the second invention, since the cassette positioning pin insertion hole is provided in the exposed portion where the top plate of the front cover does not face, the cassette positioning pin insertion hole penetrates through the upper and lower surfaces of the cassette body. The contact area between the cassette positioning pin and the cassette body can be increased. Therefore, it is possible to perform mounting with even more accurate positioning, and it is also possible to perform mounting with accurate positioning even in devices where the cassette mounting surface in the device is not horizontal but is mounted vertically. Become.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a perspective view of a tape cassette according to the present invention,
FIG. 2 is a perspective view with the front cover open, and FIG. 3 is a perspective view of the bottom side. FIG. 4 is an exploded perspective view showing the front lid and rear lid used in the tape cassette of the present invention, FIG. 5 is a sectional view of the front lid and rear lid portion, and FIG. FIG. 7 is a side view showing the tape cassette according to the present invention mounted on the cassette mounting section. FIG. 8 is a perspective view of a tape cassette showing another example of the present invention, and FIG. 9 is a side view showing the tape cassette installed in the cassette mounting section. 3...Cassette body 6...Magnetic tape 8...Front cover 7...Recessed portion 10 for entering the tape drawer operating member...
Top plate 11...Rotating arm part 15...Back cover 25...Cassette positioning pin insertion hole 26...Notch part 27...Exposed part of cassette body 30...Cassette positioning pin patent Applicant: Sony Corporation Representative Patent Attorney: Koike Miwami: Sakae Tamura - Figures 5 and 6

Claims (3)

[Claims] (1) A pair of tape reels wound with a tape body are rotatably supported inside, and the tape body wound between the tape reels is pulled out from the tape body draw-out holes provided on both sides of the front side. A cassette main body that extends to the front side and has a recessed part on the front side into which a tape body drawer operation member enters, and arms provided on both sides are supported by the cassette main body and are rotatably attached to the cassette body. The cassette body of the front lid includes a front lid that covers a tape body extending to the front side of the main body, and a back lid that is rotatably supported within the front lid body and covers the back side of the tape body when the lid is closed. The top plate that covers the top side is positioned so as to substantially cover the top side of the recess provided in the cassette body for entering the tape body drawer operation member, and is provided between both sides of the top plate and each of the arm parts. A tape cassette in which a part of the top surface of the cassette body is provided with an exposed part facing outward. (2) A pair of tape reels wrapped with tape bodies are rotatably supported inside, and the tape bodies wound between the tape reels are pulled out from the tape body draw-out holes provided on both sides of the front side. A cassette main body that extends to the front side and has a recessed part on the front side into which a tape body drawer operation member enters, and arms provided on both sides are supported by the cassette main body and are rotatably attached to the cassette body. The cassette body of the front lid includes a front lid that covers a tape body extending to the front side of the main body, and a back lid that is rotatably supported within the front lid body and covers the back side of the tape body when the lid is closed. The top plate that covers the top side is positioned so as to substantially cover the top side of the recess provided in the cassette body for entering the tape body drawer operation member, and is provided between both sides of the top plate and each of the arm parts. A tape cassette in which a part of the upper surface of the cassette body is provided with an exposed portion facing outward, and a cassette positioning pin insertion hole is bored at a position corresponding to the exposed portion. (3) The tape cassette according to claim 2, wherein the cassette positioning pin insertion hole is formed to extend through the upper and lower surfaces of the cassette body.