JPH04291051A - Cassette lid opening/closing device - Google Patents

Abstract

PURPOSE:To reduce the size and thickness of the device without spoiling the insertion, ejection and seating feeling of a tape cassette and to reduce the impact of seating/leaving the tape cassette, in a magnetic recording and reproducing device with a short distance between a rotary head drum and the tape cassette when it is seated. CONSTITUTION:When a tape cassette 3 whose cassette lid is closed is inserted in a holder base 10, a lid engaging part 21a of a lid opening/closing lever 19a passes above the cassette lid 8, a lock engaging part of a lid detection lever 26a which locks the lid opening/closing lever 19a is avoided from locking and the cassette lid 8 can be half-opened with the lid opening/closing lever 19a. Then when the seating operation of the tape cassette 3 is started, the cassette lid 8 is immediately fully opened with the stationary lid opening member 18a. By rotating and pressing the holder base 10 by means of the rotating and pressing force of the lid opening/closing lever 19a in the seating/leaving direction, a tension spring 15a of the holder base 10 can be minimized.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applicable to digital audio tape recorders (hereinafter referred to as DAT) and video tape recorders (hereinafter referred to as DAT).
The present invention relates to a device for mounting a tape cassette having a rotary lid to a device such as a VTR (hereinafter referred to as a VTR), and in particular to a cassette lid opening/closing device that is effective for downsizing and thinning the device.

0002

2. Description of the Related Art In recent years, there has been remarkable progress in the miniaturization, cost reduction, and quick access technology of DATs, VTRs, and the like. Among these, miniaturization is a technology that reduces the surface area and thickness of devices, mainly for portable and vehicle-mounted devices. Therefore, in order to reduce the surface area size of the mechanism that mounts the rotating head drum, the distance between the rotating head drum and the tape cassette is placed as short as possible, and when the tape cassette is seated, the rotating lid of the tape cassette is placed on the rotating head drum. There is a need for a small lid opening/closing device that prevents the vehicle from riding on the vehicle. A conventional cassette lid opening/closing device with a tape cassette seating device includes a fixed lid opening member implanted in a chassis, inserts a tape cassette with a closed cassette lid into a tape cassette holding member, and then opens the cassette. The cassette lid is gradually opened by the engagement of the fixed lid opening member with the cassette lid in conjunction with the movement of the holding member to sit on a mechanism provided with a rotating head drum.

An example of a cassette lid opening/closing device equipped with the above-mentioned conventional tape cassette seating device will be described below with reference to the drawings.

FIG. 7(A) is a plan view of a main part showing a tape cassette seating state of a cassette lid opening/closing device equipped with a conventional tape cassette seating device, FIG. 7(B) is a side view of the main part, and FIG. 9 is a side view of a main part of a cassette lid opening/closing device equipped with a conventional tape cassette seating device, showing the tape cassette insertion completion and ejection standby state. FIG. 9 shows a cassette lid opening/closing device equipped with a conventional tape cassette seating device. FIG. 3 is a side view of a main part showing a tape cassette seating process.

In FIGS. 7(A) and 7(B), 51 is a chassis disposed inside the DAT body, and on this chassis 51, a helical scan type rotating head drum 52 is provided, and a sometimes tape cassette 53
positioning pins 54a and 54b for positioning the tape cassette, and a cassette receiving pin 55 for receiving the seating surface of the tape cassette.
a and 55b are provided protrudingly. Further, reel stands 56a, 56b are arranged on the chassis 51 and rotated by a known drive transmission system (not shown).
When the tape cassette 53 is seated, the tape 57 inside the tape cassette 53 is wound up or rotated by a tape pull-out device (not shown), a capstan, a pinch roller, etc. (not shown). The cassette lid 58 is a lid of the tape cassette 53 and is rotatable under pressure, and has pivot points 58a and 58b inside the tape cassette 53.

A holder support member 59 supports only the rotation of the holder base 60 that allows the tape cassette 53 to be inserted and ejected, and is fixed to the chassis 51 while forming a bridge shape on the rotating head drum 52. ing. 61
is the upper holder and the mounting screw 6 is attached to the holder base 60.
2a and 62b, inserting the tape cassette 53,
In addition to forming a discharge port, a pair of cassette pressing springs 63a
, 63b are arranged. Further, the upper holder 6
The holder base 60 integrated with 1 has rotation fulcrum shafts 64a, 64
b is implanted, and the rotation fulcrum shaft 6 of the holder support member 59
4a and 64b are rotated at a certain angle while being biased in the seating/detachment direction by tension springs 65a and 65b, one end of which is fixed to the chassis 51, and held by a known locking member (not shown), thereby creating a tape cassette. 53 into a seated state.

Note that guide pins 66a and 66b are implanted on both sides of the upper holder 61, and are engaged with holder guides 67a and 67b that have guide grooves with a certain rotation angle and that protrude from the chassis 51. do. And 68a, 68
b is a fixed lid opening member that protrudes from the chassis 51 and holds the tape cassette 5 in the holder base 60;
3, the cassette lid 58 can be engaged with the cassette lid 58, and the cassette lid 58 is fully opened when the tape cassette 53 is completely seated.

The operation of the cassette lid opening/closing device equipped with the conventional tape cassette seating device constructed as described above will be described below.

FIG. 8 shows a state in which the tape cassette 53 has been inserted and is ready for ejection, and the holder base 60 is at the open position d with the guide support of the guide pin 66a (66b) of the upper holder 61 and the holder guide 67a (67b). The force is maintained at . At this time, tape cassette 53
Even after the cassette lid 58 is completely inserted into the cassette openings of the holder base 60 and the upper holder 61, the cassette lid 58 remains closed.

Next, when the upper part of the upper holder 61 is pushed and moved in the seating direction of the tape cassette 53, the holder base 60 rotates to the open position e as shown in FIG. 9, and the cassette lid 58 of the tape cassette 53 is fixed. It engages with the lid open member 68a (68b) and the rotation fulcrum 58a (5
8b) in a counterclockwise direction. Then, push the upper part of the upper holder 61 further to remove the tape cassette 53.
When the holder base 60 is moved in the seating direction of the tape cassette 53, the holder base 60 is rotated to the open position f as shown in FIGS. The lid 58 is fully opened by fixed lid opening members 68a and 68b, and the tape cassette 53 is seated and held by positioning pins 54a and 54b and cassette receiving pins 55a and 55b.

[0011]

However, as the mechanism of DAT or VTR equipment becomes smaller and thinner, the conventional cassette lid opening/closing device equipped with the above-mentioned tape cassette seating device has become smaller and thinner. By shortening the distance between the rotating head drum 52 and the tape cassette 53 when seated in FIG. 7(B), the tape cassette 5
The cassette lid 58 in 3 is connected to the rotating head drum 52.
In order to avoid riding on the upper part of the tape cassette holding member, the opening angle of the holder base 60, which is a tape cassette holding member, must be set large, and the rotation fulcrum shaft 64a of this opening must be made large.
, 64b had to be placed as far away from the tape cassette 53 as possible. Therefore, FIGS. 7(A), 7(B)
), the cassette lid opening/closing device equipped with a tape cassette seating device has a problem in that it becomes larger as the dimensions Lw and Lh become larger.

Further, in FIG. 7(B), tension springs 65a and 65b which bias the holder base 60, which is a tape cassette holding member, in the seating/unseating direction keep the holder base 60 seated with the tape cassette 53 inserted. A large load is required to remove the holder base 60, and therefore, a large impact is applied after the holder base 60 is seated and removed.
The operating feel was significantly impaired.

Therefore, the present invention solves the above-mentioned conventional problems, and in FIGS. 7(A) and 7(B), the dimension L
The purpose of this invention is to provide a cassette lid opening/closing device that has a small and thin tape cassette seating device with significantly smaller w and Lh, and also does not impair the feel of tape cassette insertion and ejection. Moreover, since the opening angle of the cassette holding member can be made small, it also gives a visual sense of luxury. Furthermore, since the load of the tension springs 65a and 65b that bias the holder base 60 in the direction of seating and removal can be minimized, the holder base 60
The impact after the 0 seat/unseating operation is reduced, and the operating feel can be greatly improved.

Moreover, the simple structure allows for easy assembly, and does not result in a significant increase in the number of parts or cost.

[0015]

[Means for Solving the Problems] In order to solve the above problems, a cassette lid opening/closing device equipped with a tape cassette seating device according to the present invention is capable of inserting and ejecting a tape cassette having a cassette lid that can be rotated to open and close. , a tape cassette holding member that can be seated on a magnetic recording and reproducing apparatus equipped with a rotating head drum, a fixed lid opening member that fully opens a cassette lid by a seating operation of the tape cassette holding member; and a tape on the tape cassette holding member. A lid opening/closing lever that is biased and rotatable near the side of the cassette and that opens the cassette lid in a half-open state when the tape cassette is inserted and closes the cassette lid when the tape cassette is ejected; A lid detection device having a locking engagement portion near a side surface of the tape cassette that is biased and rotatable and capable of locking the lid opening/closing lever, and a sloped engagement portion that engages the tape cassette with a slope when the tape cassette is inserted. When a tape cassette comprising a lever and with the cassette lid in a closed state is inserted into the tape cassette holding member, the lid opening/closing lever biases and engages the vicinity of the upper part of the rotation fulcrum of the cassette lid, and at the same time the tape cassette that follows The lid detection lever prevents the lid opening/closing lever from being locked by engagement of the sloped engagement portion of the lid detection lever, and when the insertion of the tape cassette is completed, the cassette lid is brought into a half open state by the rotation biasing force of the lid opening/closing lever; The cassette lid is then fully opened by the seating operation of the tape cassette holding member and the fixed lid opening member, and when the tape cassette with the cassette lid in the half open state is ejected from the tape cassette holding member, the lid is opened and closed. While the lever biases and engages the upper part of the rotation fulcrum of the cassette lid, the tape cassette and the sloped engagement part of the lid detection lever disengage, and at the same time locks the lid opening/closing lever. The cassette lid is configured to close the cassette lid by the rotation biasing force of the lid opening/closing lever upon completion of ejection. In addition, the present invention also includes a configuration in which the tape cassette holding member in which the tape cassette is inserted is pivoted in the seating/separation direction by using the pivoting force of the lid opening/closing lever.

[0016]

[Operation] With the above-described structure, the present invention allows the lid opening/closing lever to serve as a pivot point for the cassette lid without requiring a large insertion resistance when inserting the tape cassette with the cassette lid in the closed state into the tape cassette holding member. After the lid detection lever unlocks the lid opening/closing lever by the subsequent engagement of the tape cassette with the sloped surface engaging portion of the lid detection lever, the cassette lid is connected to the rotating head drum. The lid opening/closing lever is biased near the top to open the lid half-opened, and the tape cassette holding member is subsequently seated and the fixed lid opening member opens the lid fully open. Therefore, the tape cassette can be smoothly seated without the cassette lid riding on the rotating head drum.

Furthermore, when the tape cassette with the cassette lid in a half-open state is ejected from the tape cassette holding member, the lid opening/closing lever engages the tape cassette with a force near the upper part of the pivot point of the cassette lid. When the sloped engagement portion of the lid detection lever is disengaged, the lid opening/closing lever is simultaneously locked, and the subsequent tape cassette is ejected from the tape cassette holding member.
The cassette lid can be closed by the rotation biasing force of the lid opening/closing lever without requiring a large discharge resistance.

From the above, the opening/closing angle of the tape cassette holding member can be made small, and the rotational fulcrum of the tape cassette holding member can be placed closer to the tape cassette, so the overall size of the apparatus can be significantly reduced. , it can be made thinner.

In addition, the lid opening/closing lever, which is urged to rotate only when the tape cassette is inserted, is engaged with another fixing member, so that the tape cassette holding member is rotated in the seating/removal direction. The biasing force of the seating/separating biasing member directly attached to the tape cassette holding member can be minimized. Therefore, the impact after the tape cassette holding member is seated and removed is reduced.
The operational feel can be greatly improved.

[0020]

[Example] The following is an example of a cassette lid opening/closing device equipped with a tape cassette seating device according to the present invention.
This will be explained in detail with reference to FIG.

FIG. 1 is a sketch showing a tape cassette insertion or ejection completion state of a cassette lid opening/closing device equipped with a tape cassette seating device according to an embodiment of the present invention, and FIG. 2(A) shows a tape cassette of the present invention. FIG. 2(B) is a plan view of a main part of a cassette lid opening/closing device equipped with a seating device showing the completion of seating of a tape cassette, and FIG. FIG. 3(A) is a plan view of a main part of a cassette lid opening/closing device equipped with a tape cassette seating device of the present invention in a tape cassette insertion standby state or ejection completion state.
B) is a side view of the main part thereof, and FIG. 4(A) is a plan view of the main part showing the tape cassette insertion process of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention.
(B) is a side view of the main part. Further, FIG. 5 is a plan view of a main part of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention, showing a tape cassette insertion completion or ejection standby state. FIG. 6 is a plan view of a main part showing the tape cassette seating process of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention.

In FIGS. 2(A) and 2(B), 1 is D
This is a chassis placed inside the AT body, and this chassis 1
A helical scan type rotary head drum 2 is provided on the top, as well as positioning pins 4a and 4b for positioning the tape cassette 3 when it is seated, and cassette receiving pins 5a and 5b for receiving the seating surface of the tape cassette 3. It is installed protrudingly. Furthermore, reel stands 6a and 6b are arranged on the chassis 1 and rotated by a known drive transmission system (not shown), and when the tape cassette 3 is seated, the reel stands 6a, 6b are connected to a tape drawer (not shown) and a capstan. , the tape 7 in the tape cassette 3 is wound up or supplied by a pinch roller or the like. Note that 8 is a cassette lid which is a lid of the tape cassette 3 and is biased and rotatable, and has pivot points 8a and 8b inside the tape cassette 3.

Reference numeral 9 denotes a holder support member, which is provided with rotating and sliding guides 9a and 9b, and supports the rotating and sliding movement of the holder base 10 which allows the tape cassette 3 to be inserted and ejected;
The rotary head drum 2 is fixed to the chassis 1 while being configured in a bridge shape. Reference numeral 11 denotes an upper holder which is held on the holder base 10 with mounting screws 12a and 12b, and forms an insertion and ejection port for the tape cassette 3.
A pair of cassette pressing springs 13a and 13b are provided. In addition, pivot shafts 14a and 14b are implanted in the holder base 10, which is integrated with the upper holder 11, and the holder base 10 is pivoted around the pivot sliding guides 9a and 9b of the holder support member 9. It can be rotated and slid about shafts 14a and 14b, and one end thereof is biased by tension springs 15a and 15b fixed to the chassis 1 to rotate and slide at a certain angle, using a known locking member (not shown). By holding the tape cassette 3, the tape cassette 3 is placed in a seated state. Note that there are guide pins 1 on both sides of the upper holder 11.
6a and 16b are implanted, the holder guide 17 has a certain rotation angle and a sliding guide groove, and protrudes from the chassis 1.
a, engages with 17b. Fixed lid opening members 18a and 18b are provided protruding from the chassis 1 and can be engaged with the cassette lid 8 by rotation of the tape cassette 3 held in the holder base 10.
When the cassette lid 8 is completely seated, the cassette lid 8 is fully opened.

Next, 19a and 19b are lid opening/closing levers, each of which is disposed on the outer surface of the holder base 10 integral with the upper holder 11, and the outer side thereof is sandwiched between the upper holder 11. The support shafts 20a, 20b of the respective lid opening/closing levers 19a, 19b pass through the holder base 10 and the upper holder 11, and the lid opening/closing lever 1
9a and 19b are rotatable. Also, 21a, 2
Reference numeral 1b denotes a lid engaging portion integrally formed on each lid opening/closing lever 19a, 19b, which climbs over the top of the cassette lid 8 when the tape cassette 3 passes through, and when the tape cassette 3 completes passing, the lid engaging portion 1b It becomes possible to engage the rear of the 22a, 22b are holder guide engaging parts integrally formed on each lid opening/closing lever 19a, 19b, and when the holder base 10 moves in the seating direction, the outer shape parts 23a, 23b of the holder guides 17a, 17b.
can be engaged with. Reference numerals 24a and 24b are tension springs which are interposed between the respective lid opening/closing levers 19a, 19b and the upper holder 11.
9a, 19b are rotated clockwise, and the lid opening/closing levers 19a, 19b are integrally formed with the lid engaging portion 21.
a, 21b and the notch 25a of the holder base 10
, 25b, the engagement can be prevented.

Reference numerals 26a and 26b are lid detection levers, which are respectively disposed on both sides of the holder base 10 and are rotatably held by cut-and-raised portions 27a and 27b of the holder base 10 and lid detection leaf springs 28a and 28b. , and is rotatably biased by the lid detection plate springs 28a and 28b. Note that the lid detection lever 26a
, 26b are provided with lock engaging portions 29a, 29b that can prevent rotational biasing of the lid opening/closing levers 19a, 19b.
is integrally formed and engages with both sides of the cassette lid 8 with a slope when the tape cassette 3 is inserted.
a and 30b are integrally formed.

The operation of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention constructed as described above will be described below.

First, the operation for seating the tape cassette 3 will be explained. In FIGS. 3A and 3B, which show the tape cassette 3 in the insertion standby or ejection completion state of the apparatus of the present invention, when the tape cassette 3 is inserted into the cassette openings of the holder base 10 and the upper holder 11, the tape cassette 3 is closed. When the cassette lid 8 is in the state, the lid detection lever 26a
, 26b, the lid opening/closing levers 19a, 19b are prevented from being rotated by the locking portions 29a, 29b.
, 21b. Furthermore, Fig. 4(A), Fig. 4(B)
), when the tape cassette 3 is continued to be inserted, the lid opening/closing levers 19a, 19b are pulled counterclockwise by the cassette lid 8 in the closed state and the spring 24a is pulled.
, 24b, and then the cassette lid 8, which is in the closed state, touches the lid detection lever 26a.
, 26b, and the lid detection levers 26a, 26b are connected to the lid detection plate springs 28.
The lid opening/closing lever 1 is moved while resisting the bias of the levers a and 28b.
9a and 19b are prevented from engaging.

When the tape cassette 3 is further inserted until the insertion is completed, as shown in FIG.
(21b) is the pivot point 8a (8b) of the cassette lid 8
, and the cassette lid 8 is moved away from the top of the lid opening/closing lever 19a (19b) by the tension spring 23a (23b).
), and is integrally formed with the lid opening/closing lever 19a (19b).
(21b) is a notch 25a of the holder base 10.
(25b) The cassette lid 8 is rotated in the opening direction to the position where it is prevented from engaging.

Next, when the upper part of the upper holder 11 is pushed and moved in the seating direction of the tape cassette 3, as shown in FIG. Guide 17a (17b
) slides and rotates while being guided and supported by
Move to open position b. At this time, the lid opening/closing lever 19
Holder guide engaging portion 22 integrally formed on a (19b)
a (22b) begins to engage with the external portion 23a (23b) of the holder guide 17a (17b).

Then, when the upper part of the upper holder 11 is further pushed and moved in the seating direction of the tape cassette 3,
The cassette lid 8 of the tape cassette 3 engages with the fixed lid opening member 18a (18b) and rotates at the pivot point 8a (8b).
) to fully open and rotate counterclockwise. At the same time, the holder guide engaging portion 22a (22b) integrally formed on the lid opening/closing lever 19a (19b) and the holder guide 1
7a (17b), the biasing force of the tension spring 24a (24b) of the lid opening/closing lever 19a (19b) is applied to the holder base 1.
The tension spring 15a (15b) is applied to the upper holder 11, which is integrated with the
) in addition to the biasing force of the tension spring 24a (24b)
The urging force of will also be added.

Thereafter, when the tape cassette 3 is completely seated, the holder base 10 is rotated to the open position b as shown in FIGS. 2(A) and 2(B), and then locked and held by a known locking member (not shown). The tape cassette 3 is seated and held by positioning pins 4a, 4b and cassette receiving pins 5a, 5b.

Next, the ejection operation of the tape cassette 3 will be explained. In FIGS. 2(A) and 2(B) showing a state in which the tape cassette 3 of the apparatus of the present invention is completely seated, when the holder base 10 is unlocked by a known locking member (not shown), the holder base 10 is locked by the tension spring. 15a, 1
5b and tension springs 24a, 24b, the holder support member 9 rotates while being guided and supported by the rotational sliding guides 9a, 9b and the holder guides 17a, 17b, and moves from the open position c to b. Thereafter, as shown in FIG. 6, the holder base 10
It moves from the open position b to a while being biased only by b). At this time, the tape cassette 3 is seated and removed, and the cassette lid 8 is biased and rotated clockwise about the rotation fulcrum 8a (8b) from fully open to half open while engaging the fixed lid opening member 18a (18b). Ru. Then, when the holder base 10 completes moving to the open position a, the cassette lid 8 is moved to the lid opening/closing lever 19a (19
b) It is in a half-open state at a position where rotation is prevented by the lid engaging portion 21a (21b) formed integrally with the lid engaging portion 21a (21b).

Next, when the tape cassette 3 is ejected from the cassette openings of the holder base 10 and upper holder 11, the cassette lid 8, which is in a half-open state, as shown in FIGS. 4(A) and 4(B), lid opening/closing lever 19a,
The lid engaging portions 21a, 21b integrally formed with the lid engaging portions 21a, 21b provide rotational urging in the clockwise direction.
, 8b, it becomes closed. Further, if the tape cassette 3 is continued to be ejected,
As shown in (B), the cassette lid 8 in the closed state is connected to the sloped engagement portions 30 of the lid detection levers 26a, 26b.
a, 30b, and the lid detection levers 26a, 26
b is rotatably biased by the biasing of the lid detection plate springs 28a, 28b to the vicinity of the engagement of the lid engaging portions 21a, 21b integrally formed with the lid opening/closing levers 19a, 19b.

When the tape cassette 3 is further ejected until the cassette lid 8 is disengaged from the lid engaging portions 21a, 21b, the lid opening/closing levers 19a, 1
9b detaches from the cassette lid 8 and connects with the notches 25a, 25b of the holder base 10 and the lid detection lever 2.
6a and 26b are biased and engaged via locking engagement portions 29a and 29b to be in a locked state.

As described above, according to this embodiment, the upper holder is capable of inserting and ejecting the tape cassette 3 having the cassette lid 8 which can be rotated to open and close, and which can be seated on the DAT mechanism in which the rotating head drum 2 is mounted. In the holder base 10 integrated with 11, the holder base 1
fixed lid opening members 18a and 18b that fully open the cassette lid 8 by the seating operation of 0; and fixed lid opening members 18a and 18b that are biased and rotatable near the sides of the tape cassette 3 on the holder base 10 and open the cassette lid when the tape cassette 3 is inserted. a lid opening/closing lever 19 that keeps the cassette lid 8 in a half-open state and closes the cassette lid 8 when the tape cassette 3 is ejected;
a, 19b, and the lid opening/closing lever 1 which is biased and rotatable near the side surface of the tape cassette 8 on the holder base 10.
9a, 19b lockable lock engaging portion 29a,
29b and engage the tape cassette 3 with a slope when the tape cassette 3 is inserted.
When the tape cassette 8 with the cassette lid 8 in the closed state is inserted into the holder base 10, the lid opening/closing levers 19a, 19b are provided with lid detection levers 26a, 26b having the pivot point 8a,
At the same time as the upper part of the lid detection lever 8b is biased and engaged, the lid detection lever 2
6a, 26b prevent the lid opening/closing levers 19a, 19b from being locked, and when the insertion of the tape cassette 3 is completed, the cassette lid 8 is brought into a half open state by the rotation biasing force of the lid opening/closing levers 19a, 19b, and then the holder base 10 Seating operation and fixed lid opening member 18a, 1
8b to fully open the cassette lid 8, and move the tape cassette 3 with the cassette lid 8 in a half-open state to the holder base 1 integrated with the upper holder 11.
When discharging from 0, the lid opening/closing levers 19a, 19
b biases and engages the upper portions of the pivot points 8a and 8b of the cassette lid 8, while the tape cassette 3 and the sloped engagement portions 30a and 30b of the lid detection levers 26a and 26b are disengaged and the lid is simultaneously opened and closed. The levers 19a, 19b are brought into a locked state, and when the tape cassette 3 is subsequently ejected, the cassette lid 8 is closed by the rotation biasing force of the lid opening/closing levers 19a, 19b.

Therefore, when inserting the tape cassette 3 with the cassette lid 8 in the closed state into the holder base 10 integrated with the upper holder 11, the lid opening/closing levers 19a and 19b close the cassette lid without requiring a large insertion resistance. 8, and at the same time, the lid detection lever 26a and the lid detection lever 26a can be biased and engaged with the upper portions of the rotational supports 8a and 8b of the lid detection lever 26a and 8b. 26b unlocks the lid opening/closing levers 19a, 19b, and then closes the lid opening/closing levers 19a, 1 near the top of the rotating head drum 2.
The cassette lid 8 of the tape cassette 3 is opened to a half-open state by the biasing engagement of the tape cassette 3, and the cassette lid 8 is fully opened by the subsequent seating operation of the holder base 10 and the fixed lid opening member. Therefore, the tape cassette 3 can be seated smoothly without the cassette lid 8 of the tape cassette 3 riding on the rotating head drum 2.

Further, when ejecting the tape cassette 3 with the cassette lid 8 in a half-open state from the holder base 10, the lid opening/closing levers 19a, 19b move around the upper portions of the pivot points 8a, 8b of the cassette lid 8. The tape cassette 3 and the lid detection lever 26a are pressed together while being biased and engaged.
, 26b are disengaged, the lid opening/closing levers 19a, 19b are simultaneously locked, and the subsequent tape cassette 3 is moved to the holder base 10.
When ejecting the cassette from the cassette lid 8, the rotating biasing force of the lid opening/closing levers 19a and 19b allows the lid 8 to be ejected without requiring large ejection resistance.
can be closed.

[0038] As a result, the pivot shafts 14a and 14b of the holder base 10 can be placed closer to the tape cassette 3, and the opening/closing angle of the holder base 10 integrated with the upper holder 11 can be made smaller. As shown in FIG. 2(A) and FIG. 2(B), dimensions Lw, L
h is significantly reduced, and the entire device can be made significantly smaller and thinner. Furthermore, the feeling of inserting and ejecting the tape cassette is not impaired, and the opening angle of the cassette holding member can be made small, giving a visual sense of luxury.

In addition to this, the holder base 10 in which the tape cassette 3 is inserted is rotated in the seating/separation direction by utilizing the rotational urging force of the lid opening/closing levers 19a, 19b. The biasing force of the tension springs 15a and 15b directly attached to the holder base 10 for biasing seating and separation can be minimized. Therefore, the impact after the holder base 10 integrated with the upper holder 11 is seated and removed is reduced, and the operational feeling can be significantly improved.

Furthermore, the simple structure allows for easy assembly, and does not result in a significant increase in the number of parts or cost.

[0041]

As described above, the present invention provides a tape cassette holding member capable of inserting and ejecting a tape cassette having a cassette lid that can be rotated to open and close, and that can be seated on a mechanism mounting a rotating head drum. a fixed lid opening member that fully opens the cassette lid by the seating operation of the tape cassette holding member; and a fixed lid opening member that is biased and rotatable near the side surface of the tape cassette on the tape cassette holding member and leaves the cassette lid in a half-open state when the tape cassette is inserted. a lid opening/closing lever that closes the cassette lid when the tape cassette is ejected; and a locking mechanism that is biased and rotatable near the side surface of the tape cassette on the tape cassette holding member and locks the lid opening/closing lever. The tape cassette is inserted into the tape cassette holding member with the cassette lid in a closed state. At this time, the lid opening/closing lever biases and engages the upper part of the rotation fulcrum of the cassette lid, and at the same time, the lid opening/closing lever locks due to subsequent engagement between the tape cassette and the sloped engagement portion of the lid detection lever. When the tape cassette has been inserted, the lid opening/closing lever turns the cassette lid into a half-open state.
The cassette lid is then fully opened by the seating operation of the tape cassette holding member and the fixed lid opening member, and when the tape cassette with the cassette lid in the half open state is ejected from the tape cassette holding member, the lid is opened and closed. While the lever biases and engages the upper part of the rotation fulcrum of the cassette lid, the tape cassette and the sloped engagement part of the lid detection lever disengage, and at the same time locks the lid opening/closing lever. When the ejection is completed, the rotation biasing force of the lid opening/closing lever acts to close the cassette lid.

As a result, when inserting a tape cassette with the cassette lid in the closed state into the tape cassette holding member, the lid opening/closing lever is biased toward the upper part of the rotational fulcrum of the cassette lid without requiring a large insertion resistance. can be engaged,
At the same time, the lid detection lever unlocks the lid opening/closing lever due to the subsequent engagement of the tape cassette with the sloped engagement portion of the lid detection lever, and then the cassette lid biases the lid opening/closing lever near the top of the rotating head drum. Specifically, the lid is opened to a half-open state by engagement, and then fully opened by the seating operation of the tape cassette holding member and the fixed lid opening member. Therefore, the tape cassette can be smoothly seated without the cassette lid riding on the rotating head drum.

Furthermore, when ejecting a tape cassette with the cassette lid in a half-open state from the tape cassette holding member, the lid opening/closing lever engages the tape cassette with the upper part of the rotation fulcrum of the cassette lid. When the sloped engagement portion of the lid detection lever is disengaged, the lid opening/closing lever is simultaneously locked, and the subsequent tape cassette is ejected from the tape cassette holding member.
The cassette lid can be closed by the rotation biasing force of the lid opening/closing lever without requiring a large discharge resistance.

From the above, the pivot point of the tape cassette holding member can be placed closer to the tape cassette,
In addition, since the opening/closing angle of the tape cassette holding member can be made small, the entire device can be made significantly smaller and thinner. Furthermore, the feeling of inserting and ejecting the tape cassette is not impaired, and the opening angle of the cassette holding member can be made small, giving a visual sense of luxury.

In addition, the tape cassette holding member, in which the tape cassette is inserted, is rotated and urged in the seating/removal direction by utilizing the rotational urging force of the lid opening/closing lever. It is possible to rotationally urge the holding member in the seating/separation direction and to minimize the urging force of the seating/separation urging member directly attached to the tape cassette holding member. Therefore, the impact after the tape cassette holding member is seated and removed is reduced, and the operational feeling can be significantly improved.

Furthermore, the simple structure allows for easy assembly, and does not result in a significant increase in the number of parts or cost.

[Brief explanation of the drawing]

FIG. 1 is a sketch showing a tape cassette insertion or ejection completion state of a cassette lid opening/closing device equipped with a tape cassette seating device according to an embodiment of the present invention;

[Figure 2] (A
) is a plan view of the main part showing the completion of seating of the tape cassette of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention (B) is a side view of the main part of FIG. 2(A)

FIG. 3(A) is a plan view of a main part of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention in a tape cassette insertion standby or ejection completion state (B) is FIG.
(A) Main part side view

FIG. 4(A) is a plan view of a main part showing the tape cassette insertion process of a cassette lid opening/closing device equipped with a tape cassette seating device of the present invention; FIG. 4(B) is a side view of a main part of FIG. 4(A);

FIG. 5 is a plan view of the main parts of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention, showing a tape cassette insertion completion or ejection standby state;

FIG. 6 is a plan view of essential parts showing the tape cassette seating process of the cassette lid opening/closing device equipped with the tape cassette seating device of the present invention.

FIG. 7(A) is a plan view of a main part showing the tape cassette seating state of a cassette lid opening/closing device equipped with a conventional tape cassette seating device; FIG. 7(B) is a side view of the main part of FIG. 7(A);

FIG. 8 is a side view of a main part of a cassette lid opening/closing device equipped with a conventional tape cassette seating device showing completion of tape cassette insertion and ejection standby state;

FIG. 9 is a side view of a main part showing the tape cassette seating process of a cassette lid opening/closing device equipped with a conventional tape cassette seating device.

[Explanation of symbols]

1 Chassis 2 Rotating head drum 3 Tape cassette 4a, 4b Positioning pins 5a, 5b Cassette receiving pins 6a, 6b Reel stand 8 Cassette lid 9 Holder support member 10 Holder base 11 Upper holder 12a, 12b Mounting screws 13a, 13b Cassette pressing spring 15a, 15b Tension springs 17a, 17b Holder guides 18a, 18b Fixed lid opening members 19a, 1
9b Lid opening/closing levers 21a, 21b Lid engaging portions 22a, 22b Holder guide engaging portions 24a, 24b
Tension springs 26a, 26b Lid detection levers 28a, 28b Lid detection plate springs 29a, 29b
Lock engaging portions 30a, 30b Slope engaging portion

Claims (2)

[Claims] 1. A tape cassette holding member that allows a tape cassette having a cassette lid that can be rotated to open and close to be inserted and ejected, and that can be seated in a magnetic recording and reproducing apparatus equipped with a rotating head drum. A fixed lid opening member that fully opens the cassette lid by the seating operation, and a fixed lid opening member that is rotatably biased near the side surface of the tape cassette on the tape cassette holding member. The tape cassette has a lid opening/closing lever that closes the cassette lid when the cassette lid is ejected, and a locking engagement portion that is biased and rotatable near the side surface of the tape cassette on the tape cassette holding member and that locks the lid opening/closing lever. and a lid detection lever having a sloped engagement portion that engages the tape cassette with a slope when the tape cassette is inserted, and when the tape cassette with the cassette lid in the closed state is inserted into the tape cassette holding member, the lid is opened and closed. At the same time as the lever urges and engages the vicinity of the upper rotational fulcrum of the cassette lid, the lid detection lever is caused to avoid the locked state of the lid opening/closing lever by the subsequent engagement of the sloped engagement portion of the tape cassette and the lid detection lever; When the insertion of the tape cassette is completed, the cassette lid is brought into a half-open state by the rotation biasing force of the lid opening/closing lever, and then the cassette lid is fully opened by the seating operation of the tape cassette holding member and the fixed lid opening member, and the cassette lid When a tape cassette with a lid in a half-open state is ejected from the tape cassette holding member, the lid opening/closing lever engages the tape cassette and the lid detection lever with a slope while biasingly engaging the upper part of the pivot point of the cassette lid. A cassette lid opening/closing device characterized in that the lid opening/closing lever is brought into a locked state at the same time as the engagement of the part is disengaged, and the cassette lid is brought into a closed state by the rotation biasing force of the lid opening/closing lever when the tape cassette is subsequently discharged. . 2. The tape cassette holding member in which the tape cassette is inserted is urged to rotate in the seating and removal direction by using the rotational urging force of the lid opening/closing lever. cassette lid opening/closing device.