JPH02301058A - Cassette loading device - Google Patents

Abstract

PURPOSE:To surely perform the loading operation of a cassette even when the cassette in which the lock of a slider is inoperable is used by operating a cassette lock lever when the cassette is loaded differently when it is ejected. CONSTITUTION:When the cassette 1 is pushed in and inserted to a cassette holder 2, an upper part is pressed with cassette pressing springs 7 and 8, and the cassette 1 is inserted as sticking the slider 56 of the cassette 1 with the holder 2 closely. When the cassette 1 is inserted further, slider releasing ribs 9 and 10 press lock members 81 and 82 provided at the cassette 1 upward, which releases the lock of the slider 58. And the abutting of slider connection parts 11 and 12 with the abutting parts 53 and 54 of the slider 56 of the cassette 1, and that of the boss 13a of a cassette ejection lever 13 with a cassette lid 55 are started. When the cassette 1 is pushed in further, the slider 56 is stopped, and only the cassette 1 is inserted, and the slider 56 is opened completely, and the lever 13 presses the boss 13a with the lid 55, then, a pin 14 is turned in a counterclockwise direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cassette loading device that automatically loads and ejects a cassette containing a tape into a recording/reproducing device.

BACKGROUND OF THE INVENTION Recently, front loading devices have become mainstream in cassette loading devices for magnetic recording and reproducing devices for automobiles, stationary devices, etc., which are easy to operate and can reduce the height of the device.

A conventional cassette loading device will be described below, but first the configuration of a cassette used in this device will be described.

FIG. 7(a) is a perspective view showing a cassette used in a digital audio tape recorder (hereinafter referred to as DAT). The same figure (b) is a perspective view of the mode when the tape is driven, the same figure (C)
is a rear perspective view. This cassette is similar to a VTR cassette, but is smaller and has an opening 59a on the back (lower surface in use) for inserting a drive shaft, as shown in FIG.

80a is normally covered by the slider 56.

In Fig. 7(a), 1 is a cassette with tape 50 inside.
It has a reel hub 51.52 wound around a cassette lid 55 on the front side, and a shaft 57.52 as shown in FIG.
(58) and rotate upward to remove the internal tape 50.
It is possible to withdraw.

The cassette lid 55 has a spring inside and is always biased in the closing direction. The slider 56 is normally in the state shown in FIG. 5C, and has a structure in which it engages with the locking members 81 and 82 and does not open. The slider 56 is released by pressing the lock members 61 and 62 to release the lock. When the slider 56 is released by pressing the contact portions 53 and 54, the insertion hole 59,60 of the reel drive shaft (not shown) is the opening 59 al 60
Each corresponds to a. The slider 56 has a spring and is always urged in the closing direction, and the locking members 61 and 62 are engaged again as shown in FIG. 7(C).
The slider 56 is configured to be locked.

A conventional cassette loading device using the above-mentioned cassette will be described below.

FIG. 8.9 is a side view of this conventional cassette loading device, with FIG. 8 showing the state before cassette loading, and FIG. 9 showing the state after cassette loading is completed.

In FIG. 8, 1 is a cassette, 71 is a cassette holder for holding the cassette 1, and has a slider locking portion 71a and a release rib 71b, and a cassette pressing spring 72 is attached to the upper part. This cassette holder 71 is slidably supported by a side plate 74 by a fixed support shaft 73. 74
A is a guide groove for the L7 cane that guides the support shaft 73, and is provided on the side plate 74. Reference numerals 75 and 76 are positioning pins for positioning the cassette 1, 77 is a lid opener that comes into contact with the lid 55 of the cassette, 78 is a reel drive shaft, and 79 is a rotary cylinder on which a head is mounted, each of which is connected to the chassis 8.
attached to 0.

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

First, when the cassette 1 is inserted into the cassette holder as shown in FIG. 8, the release rib 71b pushes up the locking members 81 and 82 shown in FIG. 7 to unlock the slider 56. Furthermore, when the cassette 1 is inserted, the slider locking portion 71a
The slider 56 comes into contact with the cassette 1, the slider 56 stops, and only the cassette 1 enters. When the slider 56 is released and the lock is activated, loading is started, and the support shaft 73 fixed to the cassette holder 71 moves horizontally and downwardly along the guide groove 74a. (The configuration for moving the cassette holder is not shown) When the cassette 1 is lowered, the lid 55 comes into contact with the lid opener 77 and rotates to open. Then, when the cassette 1 is positioned on the positioning pins 75 and 78 to complete loading (the state shown in FIG. 9), the tape inside the cassette 1 is pulled out by a tape guide (not shown) provided on the chassis 80 and rotated. The tape is wound around a cylinder 79 and the tape is run for recording and reproduction.

The cassette 1 is ejected from the state shown in FIG. 9 by lifting and horizontally moving the support shaft 73 fixed to the cassette holder 71 along the guide groove 74a.

Incidentally, since the cassette 1 is further pushed out of the cassette holder 71 from the state shown in FIG. 8, the slider 56 is in a completely closed state. (
(The configuration for pushing out the cassette 1 from the cassette holder 71 is not shown.) Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, when a cassette in which the slider lock does not work is used, the slider lock cannot be inserted into the cassette at the time of loading the cassette. The cassette moves due to the spring force. The cassette in this state is shown in Figure 7 (
As shown in a), since the slider is in the closed state, when it descends onto the chassis, the cassette hits the reel drive shaft and tape guide group configured on the chassis, causing the cassette and the reel drive shaft and tape on the chassis to collide. There was a problem that the guide etc. were damaged.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a cassette loading device that can reliably perform a loading operation even when a cassette whose slider does not lock is used.

Means for Solving the Problems A cassette holder for holding and transporting a cassette between a first position for attaching and detaching a cassette and a second position for engaging a tape drive mechanism; a cassette holder moving means for moving between second positions; a cassette ejection lever provided on the cassette holder moving means or the cassette holder for suppressing the front surface of the cassette and ejecting the cassette; The cassette lock lever is provided with a cassette lock lever that engages with the cassette lock lever, and a contact portion that is interlocked with the operation of the cassette ejection lever.

Operation By having the above structure, the cassette loading device of the present invention can reliably load and eject a cassette by causing the cassette lock lever to operate differently when loading and unloading a cassette.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

Fig. 1 is a side view showing the state of the cassette loading device according to the embodiment of the present invention when the cassette is inserted (this state is the same as the state when the cassette is completely ejected), and Fig. 2 is the same state as Fig. 1. Figure 3 is a side view showing the drive unit, Figure 3 is a side view showing the state where the cassette is inserted by hand, Figure 4 is a side view showing the state when cassette loading is completed, and Figure 5 is the state when cassette loading is completed. Front view shown in Figure 6 (
a) is a side view showing the positional relationship of the lever guide plate and the cassette ejection lever etc. when the cassette is inserted (this state is the same as the state shown in Figure 1), and (b) is a side view showing the positional relationship of the lever guide plate and the cassette ejection lever etc. when the cassette is inserted, and (b) is a side view showing the positional relationship of the lever guide plate and the cassette ejection lever etc. when the cassette is inserted. A side view showing the positional relationship between the lever guide plate and the cassette eject lever, etc. just before turning on (this state is the same as the state shown in Figure 2). Figure (C) shows when the cassette is inserted and the start switch is set to ONL. Figure (d) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever, etc. Figure (d) is a side view showing the positional barrier between the lever guide plate and the cassette discharge lever during cassette loading, Figure (e) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever, etc. Figure (f) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever etc. when descending; Figure (f) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever etc. when cassette loading is completed; Figure (g) FIG. 2 is a side view showing the positional relationship between the lever guide plate, the cassette ejection lever, etc. during cassette ejection.

1 and 5, 1 is a cassette, 2 is a cassette holder that holds the cassette 1, and this cassette holder 2 is connected to a support shaft 3. 4, an L-shaped guide groove 5a of the right angle 5 and an L-shaped guide groove 8a of the left angle 6.
(not shown). The cassette holder 2 also has cassette pressing springs 7 on the left and right sides of the upper part.
8, a slider lock release rib 9.101, and a slider locking portion 11.12, respectively. 5c is a guide section provided between the right angle 5 and the left angle 8.

13 is a cassette ejection lever that connects the boss 13a and the guide bin 1.
3b and a contact surface 13c, and is rotatably attached to a pin 14 fixed to the cassette holder 2. A tension spring 15 has one end attached to a hanger pin 18 fixed to the cassette holder 2 and the other end attached to the cassette ejection lever 13 to bias the cassette ejection lever 13 counterclockwise.

17 is a rotating cylinder on which the head is mounted, 18 is a take-up reel stand, 19 is a supply reel stand, 20.21 is a cassette receiver pin, 22.23 is a positioning pin, 24 is a lid opener, and each is a mechanical board 25. installed on. 26 is a loading start switch, which is attached to the right angle 5. 28 is a lever guide plate, which has a first guide groove 28a that guides the guide pin 13b.
It forms a second guide groove 28b and an inclined surface 28c, and is attached to the right angle 5. 40 is a cassette lock lever having a locking portion 40a that engages with the cassette 1, an abutting portion 40b, and a protruding portion 40C.

A boss 40d is formed. A spring 42 is supported by a shaft 41 provided on the cassette holder 2, and biases the cassette lock lever 40 clockwise.

In FIG. 2, 29 is a motor that drives the loading device, 30 is a worm, 31 is a worm wheel, and 32 is a coupling that connects the motor 29 and the worm 30. Reference numerals 33 and 34 denote rotating arms, which have grooves 33a and 34a that engage with the support shaft 3.4, and are connected to the connecting shaft 35 to swing.

36 is a torsion coil spring, and a worm wheel 31
It is attached between the upper boss 31a and the post 33b on the rotating arm 33, and urges the rotating arm 33 in the counterclockwise direction. Reference numeral 37 denotes an ejection completion switch, and numeral 38 indicates a loading completion switch, which are attached to the right angle 5 at positions where they abut against the rotating arm 33, respectively.

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

As shown in FIGS. 1 and 6(a), when the cassette 1 is manually pushed into the cassette holder 2, the upper part is pressed by the cassette pressing springs 7 and 8, and the slider 56 of the cassette 1 and the cassette holder 2 are brought into close contact. While doing so, cassette 1 enters. When the cassette 1 is further inserted, the slider release ribs 9 and 10 push up the lock members 61 and 82 provided on the cassette, and the slider 56 is unlocked. At this time, the slider locking parts 11 and 12 start contacting the contact parts 53 and 54 of the slider 56 of the cassette 1, and the boss 13a of the cassette ejection lever 13 starts contacting the cassette lid 55.
(State shown in FIG. 1) When the cassette 1 is further pushed in from this state, the slider 56 stops, only the cassette 1 advances, and the slider opens completely. (The state shown in FIG. 3) Further, the boss 13a of the cassette ejection lever 13 is pressed by the cassette lid 55, and the cassette ejection lever 13 rotates counterclockwise about the pin 14. (States shown in FIGS. 3 and 6(b)) When the cassette 1 is further pushed in from this state with a force greater than the biasing force of the torsion coil spring 3B, the support shafts 3 and 4 of the cassette holder 2 are moved to the rotating arm 33. 34 in the clockwise direction, and at the same time, the cassette holder 2 moves in the direction of arrow A shown in FIG.

Then, as shown in FIG. 6(C), the guide bin 13b of the cassette ejection lever 13 is guided by the inclined surface 28c and moves to the position of the loading start switch 26, and the loading start switch 26 is turned on to issue a rotation command. to the motor 29. Furthermore, when moving from the state shown in FIG. 6(b) to the state shown in FIG. 6(C), the contact portion 4ob and the guide portion 5c
is separated, the cassette lock lever 40 rotates clockwise, and the lock portion 40a enters the working portion 1a of the cassette 1. In this state, the cassette 1 will not move even if the slider rotor does not work.

When the motor 29 starts rotating in response to a rotation command, the worm 30 shown in FIG. 2 rotates the worm wheel 31 clockwise. Then, the pivot arms 33, 34 rotate clockwise at the same time, and the groove 33a.

34a (not shown) horizontally moves and lowers the support shaft 3.4 of the cassette holder 2 along the guide grooves 5a, 6b (not shown) of the L7 cane. At this time, the cassette ejection lever 13
The guide bin 13b enters the first guide groove 28a from the position shown in FIG. 6(C) and is guided in the order of states shown in FIG. 6(d) → FIG. 6(e) → FIG. 6(f) Move with. (
In this state, the first guide groove 28a and the second guide groove 2 are arranged so that the boss 13a does not come into contact with the cassette lid 55.
8b is set. ) The cassette 1 is then lowered as shown in FIGS.
The rotary arm 33 then contacts the loading completion switch 38 to give a stop command to the motor 29 and complete the loading operation. Note that the cassette lid 55 is connected to the lid opener 24 when the cassette 1 is lowered.
It opens when it comes into contact with the After the loading operation is completed, the tape 50 in the cassette 1 is pulled out by a tape guide (not shown) provided on the mechanical board 25 and wound around the rotary cylinder 17, and the tape is run to perform recording and reproduction.

Next, the unloading operation for ejecting the cassette will be explained.

First, when an eject button (not shown) provided on the recording/reproducing device is turned on, the tape 50 is drawn into the cassette 1, and then the motor 29 rotates in the reverse direction, causing the worm 30 to rotate the worm wheel 31 counterclockwise. . At this time, the rotating arms 33.34 start rotating from the state shown in FIGS. 4 and 5, and the grooves 33a, 34a are aligned with the support shafts 3.4
L7 guide groove 5 al 6 a (not shown)
Move up and horizontally along. When the cassette holder 2 moves to the position shown in FIG. 1, the rotating arm 33 comes into contact with the ejection completion switch 37, giving a stop command to the motor 29 and completing the unloading operation.

During this unloading operation, the cassette ejection lever 13 moves from the state shown in FIG. 6(f) to the state shown in FIG. 10, with the pin 14 rising vertically and the guide pin 13b being guided by the second guide groove 28b. Displaced to. When the pin 14 begins to move horizontally in the direction of arrow B shown in FIG. 8(e), the guide pin 13b enters the second guide groove again as shown in FIG. 6(g) and is guided. Rotates clockwise due to the biasing force of the tension spring 15, and the contact surface 13C
presses the post 40d, and the lock portion 40a is separated from the working portion 1a, releasing the lock (the state shown in FIG. 8(r)).

From this state, since the boss 13a of the cassette ejection lever 13 has a larger movement distance than the cassette holder 2, the cassette 1 is pushed out from the cassette holder 2, and as shown in FIGS.
As shown in Figure (a), the ejection is completed with the slider 56 closed.

As described above, according to this embodiment, even if a cassette in which the slider lock does not work is used, it is possible to reliably load the cassette.

Next, a second embodiment of the present invention will be described.

A second object of the present invention is to use positioning pins to position the cassette when the cassette is mounted on a tape drive mechanism.
To provide a cassette loading device which reduces positioning from three points of a cassette lock lever and a cassette holder locking part to two points, reduces the number of parts requiring dimensional accuracy, and performs loading at low cost and surely.

In this embodiment, only contents different from those explained in the first example will be explained.

That is, as shown in FIGS. 1 and 5, a cassette lip P is attached to one end of a rotatably provided cassette lock lever 40.
55 is formed with a protrusion 40c that comes into contact with the protrusion 40c.

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

From the state in which the cassette 1 is shown in FIG. 6(e) to FIG. 6Cf)
When the cassette is lowered to the state shown in FIG. 2, the lid 55 of the cassette comes into contact with the lid opener 24 and rotates to open. At this time, the protrusion 40c comes into contact with the lift opener 24, the cassette lock lever 40 rotates counterclockwise, and the lock part 40a is removed from the working part 1a of the cassette 1. Then, the cassette 1 is further lowered, and the tips 22a + 23a of the positioning pins enter the positioning holes (not shown) of the cassette 1, completing the installation.

Note that the timing at which the lock portion 40c is released is such that the positioning hole (not shown) of the cassette 1 is aligned with the positioning pin tip 22.
a +23 A is inserted into the tapered part of a to be removed, so that the cassette does not move even if a cassette in which the slider lock does not work is used.

As described above, according to this embodiment, when the cassette is installed, the cassette is positioned at two points: the positioning pin and the cassette holder locking part, so the required dimensional accuracy is only between these two points, and therefore It is inexpensive and allows reliable loading.

Effects of the Invention As described above, the present invention provides a cassette holder that holds and transfers a cassette between a first position where the cassette is attached/detached and a second position where the cassette is engaged with a tape drive mechanism; a cassette holder moving means for moving between a first position and a second position; a cassette ejection lever provided on the cassette holder moving means or the cassette holder and pushing the front surface of the cassette to eject the cassette; By providing a cassette lock lever that is freely provided and engages with the cassette, and a contact portion that interlocks with the operation of the cassette ejection lever on the cassette lock lever, a cassette in which the slider does not lock can be used. can also be operated reliably.

Further, when the cassette is installed, the cassette is positioned at only two points, the positioning pin and the cassette holder locking portion, so it can be constructed at low cost, and has great practical effects.

[Brief explanation of the drawing]

Fig. 1 is a side view of a cassette loading device according to an embodiment of the present invention, showing the state when a cassette is inserted (this state is the same as the state when the cassette is completely ejected), and Fig. 2 is the same state as Fig. 1. Figure 3 is a side view showing the drive unit, Figure 3 is a side view showing the cassette inserted by hand, Figure 4 is a side view showing the state when cassette loading is completed, and Figure 5 is the side view showing the state when cassette loading is completed. Front view shown in Figure 6 (
a) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever when the cassette is inserted (this state is the same as shown in Figure 1), and (b) is a side view showing the positional relationship of the lever guide plate and the cassette ejection lever etc. when the cassette is inserted, and (b) is a side view showing the positional relationship of the lever guide plate and the cassette ejection lever etc. when the cassette is inserted and the start switch is turned on. A side view showing the positional relationship of the lever guide plate and the cassette ejection lever, etc. just before the cassette is inserted (this state is the same as the state shown in Fig. 2). Figure (C) shows the state when the cassette is inserted and the start switch is turned ON. A side view showing the positional relationship between the lever guide plate and the cassette ejection lever, etc. Figure (d) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever during cassette loading, and Figure (e) is a side view showing the positional relationship between the lever guide plate and the cassette ejection lever etc. during cassette loading. Figures (f) and (g) are side views showing the positional relationship between the lever guide plate and the cassette ejection lever, etc., while the lever guide plate is in the middle of ejecting the cassette. The side view and FIG. 9 are partial side views showing the state when the cassette loading is completed. ■...Cassette, 2...Cassette holder, 3.
4... Support shaft, 5... Right angle, 6...
Left angle, 13...Cassette ejection lever,
13a... Boss, 13b... Guide pin,
13c... Contact portion, 28... L' bar guide plate,
40...Cassette lock lever 140a...Lock part, 40b...Abutting part, 40c...Protrusion part,
40d...Boss. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 3 Figure 4 Figure 5 Figure 6

Claims (2)

[Claims] (1) a cassette holder that holds and transfers a cassette between a first position where the cassette is attached/detached and a second position where the cassette is engaged with a tape drive mechanism; cassette holder moving means for moving between the cassette holders; a cassette ejection lever provided on the cassette holder moving means or the cassette holder for pressing the front surface of the cassette to eject the cassette; A cassette loading device characterized in that the cassette lock lever is provided with a cassette lock lever that engages with the cassette lock lever, and a contact portion that is interlocked with the operation of the cassette ejection lever. (2) a cassette holder that holds and transfers the cassette between a first position where the cassette is attached/detached and a second position where the cassette is engaged with a tape drive mechanism; and a cassette holder that holds and transfers the cassette between the first position and the second position. a cassette holder moving means for moving between the cassette holders; a cassette ejection lever provided on the cassette holder moving means or the cassette holder for pressing the front surface of the cassette to eject the cassette; A cassette loading device comprising: a cassette lock lever that engages with the cassette lock lever; the cassette lock lever is provided with a contact portion that interlocks with the operation of the cassette ejection lever and a protrusion that contacts a lid of the cassette. .