JPH04195851A - Cassette loading device - Google Patents

Abstract

PURPOSE:To allow the use of two kinds of tape cassettes varying in the position and shape of the engaging recessed part of cassette loading by providing a tape cassette pull-in member provided toward the main surface of the tape cassette and a shift member for the tape cassette withdrawing pawl provided off a moving locus. CONSTITUTION:The compact cassette pull-in pawl 12 and the new cassette pull-in pawl 14 are both so supported as to act in a biting direction at the time of engagement, the former by a turning shaft 13 and the latter by a turning shaft 15. The new cassette pull-in pawl 14 is released from the outward shifting state by the shift member when the new cassette is successively inserted into a cassette holder 1 by positioning its sliding cap on the right side and its engaging recessed part on the upper side. This pawl is then projected upward toward the front surface of the new cassette by the energizing force of a leaf spring 20 and pulls in the engaging part 23 by engaging this part with the engaging recessed part. There is no engaging recessed part corresponding to the new cassette pull-in pawl 14 and, therefore, if the compact cassette is similarly successively inserted into the holder by positioning its opening on the right side, pull-in pawl is dropped to engage in the biting direction by the arrival of the corresponding engaging recessed part, i.e. the insertion hole of a reel driving shaft. The use of the two tape cassettes varying in specifications is possible in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device for a recording/playback device or the like.

2. Description of the Related Art In recent years, cassette loading devices have been widely used in video cameras, car stereos, and the like. Furthermore, new tape cassettes are being developed one after another.

Problems to be Solved by the Invention However, since one playback device is required for one tape cassette, there is a problem in that the conventional tape cassettes that have been widely used until now cannot be used.

The present invention provides a cassette loading device that can use two types of tape cassettes that are similar in shape but slightly different in shape and have different positions and shapes of engaging recesses for cassette loading.

Means for Solving the Problems In order to solve the above problems, the cassette loading device of the present invention has a first tape cassette retracting pawl corresponding to the engaging recess of the first tape cassette, and an engaging recess of the second tape cassette. Insert the second tape cassette retraction claw corresponding to the mating recess.
One tape cassette retracting member provided so as to be always biased to protrude toward the main surface of the inserted tape cassette, and a second tape cassette retracting member provided outside the movement locus of the first tape cassette retracting claw. It is equipped with a claw shift member.

Effect: The present invention has the above-described configuration, and is capable of retracting a tape cassette in a cassette loading device, such as manually inserting the tape cassette from a cassette insertion port of a cassette holder, etc., and then retracting the tape cassette using power, and lowering the tape cassette to the playing position after completion of retraction. Even if the amount of movement is larger than the distance in the direction of the engagement recess of each of the two types of tape cassettes, the shift member of the second tape cassette retraction claw does not interfere with the movement of the first tape cassette retraction claw. , it becomes possible to draw in and eject a cassette with a large stroke.

EXAMPLE Hereinafter, a cassette 7) loading device according to an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing the entire cassette loading device in an embodiment of the present invention. In Fig. 1, 1 is a cassette holder, 2 is a tape cassette insertion slot, 3 is a cassette holder support part, and 4 is a pivot shaft of the cassette holder support part. to the playing position. Reference numeral 5 denotes a hinge portion at which the cassette holder 1 and the cassette holder support plate 3 are rotatably connected at a joint a. 6 is a tape cassette retracting member guide groove, 7
Reference numeral 8 denotes a tape cassette retracting member, and numeral 8 denotes a bottle set up on the tape cassette retracting member 7, which is engaged by a drive lever and reciprocated along the tape cassette retracting member guide groove 6. Reference numeral 9 denotes a drive lever, 1o a pivot shaft of the drive lever 9, and 11 a tape cassette ejecting pin which is fixed downwardly on the drive lever 9.

FIG. 2 is a top view showing details of the tape cassette retracting member 7, in which reference numeral 12 denotes a compact cassette retracting pawl which is pivotally supported so as to act in the biting direction during retention.

Reference numeral 13 indicates a rotation support shaft thereof, and reference numeral 14 indicates a new cassette retracting pawl, which is supported so as to act in the biting direction when it is secured. Reference numeral 15 denotes a pivot shaft thereof, 16 and 19 an overhanging portion that restricts upward displacement from the cassette holder support plate 3, and 18, an overhanging portion that similarly restricts downward displacement. The tape cassette retracting member slides smoothly in the guide groove 6.

Reference numeral 20 denotes a leaf spring, one end of which is fixed to the new cassette retracting claw, and the other end pushing the compact cassette retracting claw 12 and urging it counterclockwise. Therefore, as a reaction, the new cassette retracting claw 23 is also urged counterclockwise, and is urged so as to protrude toward the upper surface of the tape cassette to be inserted (
Figure 3). Nutsopar 21 and protrusion 22 are both formed integrally with the tape cassette drawing member 7.

FIG. 3 is a front view thereof. 23 is the new cassette retraction claw 1
This is the engagement portion with the engagement recess of No. 4. FIG. 4 is a side view of the operating state, showing the tape cassette retracting claw 7 at the tape cassette ejection completion position.

Reference numeral 25 denotes a cut-and-raised part formed by cutting and raising a part of the cassette holder support plate 3, and the protrusion 22 comes into contact with the lower surface of the cut-and-raised part, and when the compact cassette is taken out at the ejection completion position (also the retraction start position). It supports the tape cassette retracting member 7 when it is bent upward.

Reference numeral 26 denotes a shift member for the new cassette retracting pawl 14, which is formed to protrude from the cassette holder support plate 3. At this position, the new cassette retracting pawl 14 is pushed up via the lower surface of the arm extending in the left and right direction, thereby securing the new cassette. Disengage the four parts. FIG. 5 is a side view of essential parts of the cassette holder support plate 3.

FIG. 6 is a top view of the main part showing the movement of the drive lever 9, showing the tape cassette being at the completed retraction position. 27 is an elongated hole into which the drive bottle fits, 28 is an engagement hole between the drive lever 9 and the bottle 8, and 29 is a drive bottle that, when moved in the direction of the arrow, rotates the drive lever 9 clockwise as shown by the dotted line. and eject the tape cassette. 30 shows the tape cassette in the ejection position. Further, a indicates the direction from the right side of the tape cassette push-out bin 11 to the bin 8 at the tape cassette retraction completion position.
b indicates the distance at the center 1, and b indicates the distance at the tape cassette ejection completion position (that is, the tape cassette insertion slot position). As shown in the figure, since the tape cassette ejecting member 11 is provided inside the drive radius of the tape cassette retracting member (-9), it becomes b ) a, and near the discharge completion position, the tape cassette retracting claws 12 and 13 engage the engaging recess. The contact with the left and right sides has been released.

FIG. 7 is a top view of the new cassette, and 30 is the new cassette, which has the same shape as the compact cassette when viewed from above. 3
1 is the Nuride lid, which is opened and closed by sliding the opening on the front. 32 is an engagement recess, and 331 is a Nuride lid opening member insertion recess. Fig. 8 is a front view of the same, Fig. 9 is a front view showing the slide lid in the open state, 34 is a recording tape, 10
The figure is a top view of the compact cassette, where 36 is the compact cassette, and 36 is a reel shaft insertion hole, which is used as an engaging recess for pulling in the tape cassette. 37 is a thick portion. FIG. 11 is a front view of the same, and 38 is a recording tape.

The operation of the cassette loading device configured as described above will be described below.

First, when a new cassette 3o is inserted into the cassette holder 1 through the tape cassette insertion slot 2 shown in FIG. Rotate the claw 12 clockwise to push it up and insert it further. When the engagement recess 32 enters slightly ahead of the new cassette retraction claw 23, the manually inserted tape cassette is detected. Then, the tape cassette retracting member 7 starts retracting the tape cassette. Therefore, the new cassette retraction claw 14 is connected to the shift member 2.
6 is released, the new cassette protrudes toward the upper surface due to the biasing force of the leaf spring 20, and the engaging portion 23 engages with the engaging recess 32 in the biting direction and is retracted. In this way, the compact cassette retracting claw 12 remains inserted into the tape cassette retracting member 7, so there is no problem in retracting a new cassette. Similarly, place the compact cassette 36 in the cassette holder 1 with its opening on the right side.
When the new cassette retracting claw 14 is inserted into the compact cassette, the new cassette retracting claw 14 is rotated clockwise and pushed up because there is no corresponding engagement recess, and the compact cassette retracting claw 12 is once pushed up. However, when the corresponding engagement recess, that is, the reel drive shaft insertion hole 36 arrives, the reel is engaged in the downward biting direction. At this point, the manual insertion is completed, and the tape cassette retracting member 7, which operates upon detecting the manual insertion of the tape cassette, begins to be retracted by power, and the retracting operation is completed when the tape cassette is completely retracted. Note that the tape cassette retracting member 7 at this time
is driven by a drive bin 29 from a drive source as shown in FIG.
This is done by moving the drive lever 9 from the dotted line position to the implementation position with the movement.

From this retracted state, the cassette holder support member 3 is rotated downward to lower the cassette holder 1 and move the tape cassette to the playing position.

After the tape cassette has been played, the cassette holder 1 is raised by rotating the cassette holder support member 3 upward, and the tape cassette retracting member 7 is moved by rotating the drive lever 9 clockwise in the opposite direction to the previous time. The tape cassette is driven rightward to move the tape cassette retracting claws 12, 14 in the ejection direction, and the left end of the tape cassette is pushed out by the cassette ejecting pin 11. The cassette ejection pin 11 is the drive lever 9
( r 1 ) r 2 ), the tape cassette is not pushed out with a movement amount smaller than the movement amount of the tape cassette drawing member 7, and the drive lever 9 When the tape cassette ejection completion position is approached, the engaging portion 23 of the tape cassette retracting claw 12 or 14 and the engaging recess no longer collide with each other in the cassette ejecting direction, and the shift member 26 pushes up the new cassette retracting claw 14. can be done smoothly.

Therefore, the new cassette 30 can be taken out smoothly from this position. In the case of a compact cassette, the available engagement recess is a large penetrating hole called the reel shaft insertion hole, so the same mechanism as in the case of the new cassette cannot be adopted, so the tape cassette retraction member 7 deflects and engages. I'm trying to solve it. That is, when an attempt is made to take out the compact cassette 35 at the tape cassette ejecting position, the compact cassette retraction claw 12 engaged in the biting direction comes into contact with the stopper 21 and cannot be rotated counterclockwise, causing the protrusion to 22 comes into contact with the lower surface of the cut-and-raised part 25, and the tape cassette retracting member 7 is bent upward using this as a fulcrum, and the compact cassette retracting pawl 12 rises and comes out of the reel shaft insertion hole, so that the tape cassette can be taken out.

As described above, since the shift member of the new cassette retracting pawl is provided outside the movement locus of the compact cassette retracting pawl, they will not interfere with each other even in a cassette loading device in which the tape cassette retracting member pulls in a large amount of cassette.

Since the drive lever is made into a flat plate and rotates on the cassette holder support plate, the increase in the thickness of the device can be kept to a minimum.

Furthermore, since the position of the cassette ejecting pin on the drive lever is inside the drive part of the tape cassette retracting member and the lock is made a little smaller, smooth release of the lock can be achieved even with the retracting claw that engages in the biting direction.

In addition, in the example, the tape cassette retracting claw corresponding to the compact cassette was made in a different shape from the new cassette retracting claw, and the method of releasing the lock when taking out the cassette was different, but the shape of the engaging recess was different from that of the new cassette. If it is of the Nurosoto type, two of them may be provided in a similar manner, and the position of each shift member may be located outside the locus of each cassette retraction amount.

Further, in the embodiment, the drive lever is rotatably supported on the cassette holder support plate, but it can also be provided on the cassette holder depending on the shape and type of the cassette holder.

Effects of the Invention As described above, the present invention provides a first tape cassette retraction claw corresponding to the engagement recess of the first tape cassette, and a second tape cassette retraction claw corresponding to the second tape cassette engagement recess. one tape cassette retracting member provided so as to always protrude toward the main surface of the inserted tape cassette, and a second tape cassette provided outside the movement trajectory of the first tape cassette retracting claw. By providing the retractable claw shift member, it is possible to realize a cassette loading device that can use tape cassettes with two different specifications.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the entire cassette loading device according to an embodiment of the present invention, Fig. 2 is a top view showing details of the tape cassette retracting member, Fig. 3 is a side view thereof, and Fig. 4 shows the operating state. 6 is a side view of the main part of the cassette holder support plate, 6 is a top view of the operating state, 7 is a top view of the new cassette, 8 is a front view of the new cassette, and 9 is a side view of the main part of the cassette holder support plate. 10 is a top view of the compact cassette, and FIG. 11 is a front view of the compact cassette 7). DESCRIPTION OF SYMBOLS 1... Cassette holder, 3... Cassette holder support plate, 7... Tape cassette retraction member, 9... Drive lever, 11... Cassette ejector pin, 12... Compact cassette retraction claw, 14... New cassette retraction claw, 20...
- Leaf spring, 26...Shift member. Name of agent: Patent attorney Akira Okaji and 2 others -
Holder 3 with force 7 with force 1. Leda support version 7- tape ptノ) 51 included eaves 1 q-j [move 11゛- 1st ward I! - Soto pressed shrimp by force/No. 3 Fig. 26 - Shift Cape - Sai Fig. 4 Fig. 15 No. 6

Claims (3)

[Claims] (1) A first tape cassette corresponding to the engagement recess of the first tape cassette.
A tape cassette retracting claw and a second tape cassette retracting claw corresponding to the engaging recess of the second tape cassette are always biased to protrude toward the main surface of the inserted tape cassette. a first tape cassette retracting member;
A cassette loading device comprising: a second tape cassette retracting pawl shift member provided outside the movement locus of the tape cassette retracting pawl. (2) The first tape cassette retraction claw shift member and the second tape cassette retraction claw shift member.
2. The cassette loading device according to claim 1, wherein the tape cassette retracting pawl shift member and the tape cassette retracting pawl shift member are located outside the movement locus of each tape cassette retracting pawl. (3) A tape cassette retracting member having a tape cassette retracting claw that engages with the engagement recess of the tape cassette to pull in the tape cassette, and a tape cassette retracting member that is pivotally supported in the biting direction when the tape cassette is retracted, and a cassette holder formed in a flat plate shape. A cassette loading device comprising: a drive lever that rotates on an upper surface to drive a tape cassette pull-in member back and forth; and a tape cassette push-out member provided inside the drive radius of the tape cassette pull-in member of the drive lever.