JPH02118950A - magnetic recording and reproducing device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording/reproducing device, and more particularly to a locking mechanism for a cassette holder that holds a tape cassette.

BACKGROUND OF THE INVENTION FIG. 6 is a schematic side view of a lock section in a conventional magnetic recording/reproducing device. In Figure 6, 1 has a hook 2 at the bottom end.
A cassette holder 3 is provided with a cassette holder which is freely MIDable and is urged upward by a spring (not shown); 3 is a locking member which rotates around a predetermined point a so that a roller 3a at the tip can engage with the hook 2; 1 #A4a is rotatably attached to the middle part of the lock member 3, and a rack part 4b is provided at the lower part of the other end side, and a transmission member movable in the horizontal direction; 5, the pinion part 5a is a transmission means A motor serving as a driving means is engaged with the rack portion 4b at 4, and a sensor 6 is for detecting a cassette holder.

This lock part is inserted into the motor 5 from the state shown in FIG.
By driving the transmission member 4 in the direction b, the roller 3a engages with the hook 2 and is locked, as shown in FIG. Further, by rotating the motor 5 in the reverse direction, the operation opposite to that described above is performed and the lock is released. At the time of ejecting the cassette to the outside, the lock release operation is performed, and the cassette holder 1 is lifted upward by the biasing force of the spring and protrudes from the main body of the recording/reproducing apparatus. Further, by pushing down this protruding cassette holder 1, the cassette holder 1 is detected by the sensor 6, the motor 5 is driven, and a locking operation is performed.

Problems to be Solved by the Invention However, the lock mechanism of this type of magnetic recording and reproducing device does not prevent the recording and reproducing device from turning off when the cassette holder 1 is in the eject position protruding from the recording and reproducing device main body. , motor 5 etc. are not driven, the locking operation is not performed, and the cassette holder 1 remains protruding from the main body of the recording/reproducing apparatus, causing the cassette holder 1 to be accidentally
There is a problem that there is a risk of damaging the cassette holder 1, etc., and that dirt and the like enter the cassette insertion opening of the cassette holder 1.

The present invention solves the above problems, and is capable of reliably locking the cassette holder by the driving means when power is supplied to the main body of the recording/reproducing apparatus, and also locks the cassette holder even when power is not supplied. The object of the present invention is to provide a magnetic recording/reproducing device that can perform the following functions.

Means for Solving the Problems In order to solve the above problems, the present invention provides a cassette holder that is provided with a hook at its lower end and can be raised and lowered, and a locking means that can be rotated about a predetermined point and engaged with the hook. and a driving means for moving the locking means between a locking position and an unlocking position via a transmission means, and an elongated hole that fits into a fixed pin is provided at an end of the transmission means near the driving means. A groove is provided in the direction of movement by the locking means and is provided at the end opposite to the elongated hole to fit into a protrusion provided on the locking means, and a protrusion on the upper part that can come into contact with the lower end of the hook. a first biasing spring biasing the transmission means to pivot upwardly about the fixing bin; and a second biasing spring biasing the locking means in a direction to engage the hook. A biasing spring is provided.

Operation According to the above statement, when the cassette holder is placed in the cassette holder gear extracting device, the transmission means is pushed forward by the drive means to lock the locking member with the protrusion of the locking means falling into the deep longitudinal groove of the single-shaped groove. It is held in the release position. When the cassette holder is pushed down to the lock position while the Ti source is being supplied to the main body of the recording/reproducing apparatus, the protrusion of the locking means falls into the longitudinal groove of the L-shaped groove due to the driving of the driving means. The locking means is rotated to engage with the hook and can be locked. Further, by driving the driving means in the opposite direction, an operation opposite to the above operation is performed,
The lock will be released.

Roughly speaking, even when power is not supplied, when the cassette holder is pushed down, the hook provided at the lower end of the cassette holder comes into contact with the protrusion of the transmission means, and the transmission means
The protrusion of the locking means is rotated downward about the fixing pin against the biasing spring of the locking means, so that the protrusion of the locking means is positioned above the longitudinal groove of the L-shaped groove, and in this state, the second attachment Due to the force spring, the protrusion of the rewacking member enters the serpentine groove of the L-shaped groove, and the locking means is rotated to engage with the hook and locked. During subsequent operation, when power is supplied to the main body of the recording/reproducing apparatus, the transmission means is retracted by the driving means, whereby the protrusion of the locking means is positioned above the longitudinal groove of the L-shaped groove. The protruding part of the transmitting means is separated from the hook, and in this state, the transmitting means is rotated upward about the fixing pin by the first biasing spring, thereby causing the protruding part of the locking means to move into the deep L-shaped groove. The cassette holder is depressed into the vertical groove, and while the power is being supplied, the cassette holder is pushed down to the locking position to take the same posture as when the locking operation was performed.

Example Hereinafter, one embodiment of the present invention will be explained based on the drawings.

FIG. 1 is a schematic diagram of the main parts of a magnetic recording and reproducing apparatus showing one embodiment of the present invention, and shows a state in which the cassette holder is not locked. In FIG. 1, reference numeral 11 is movable up and down, and is urged upward by, for example, a spring (not shown).
This cassette holder can be stored in the main body of the recording/reproducing apparatus in the lowered position, and a hook 12 is attached to the lower end. Reference numeral 13 is a locking member which is rotatable about a predetermined point C, and has a roller 13a provided at an end that can engage with the hook 12, and a protrusion 13b provided in the middle. The locking member 13 is connected to the motor 1 as a driving means via a transmission member 14.
Moved by 5. That is, the transmission member 14 is provided with an elongated hole 14a extending laterally at the end near the motor 15, and this elongated hole 14a is fitted into a fixed bottle 16 fixed at a predetermined location on the main body of the recording/reproducing apparatus. In this state, the transmission member 14 is free to move and rotate. The transmission member 14 has a vertical groove 1 at the end opposite to the elongated hole 14a.
7a and a horizontal fi 17b extending from the upper part of the U groove 17a to the elongated hole 14a aj. The part 13b is located, and the elongated hole 14
A rack portion 1411 formed on the lower surface of the side a is connected to the motor 1.
Pinion 15a attached to 5 1. : Engaged, broken. Furthermore, the transmission member 14 has a hook 12 at the top.
A protrusion 14c that can come into contact with the lower end of the is provided, and
The other end of a first biasing dot 18, one end of which is fixed to the main body of the recording/reproducing apparatus, is attached to the upper surface near the protrusion 14c, and is biased in the upward rotational direction. Also, 1
Reference numeral 9 denotes a second biasing spring which is also fixed to the main body of the recording/reproducing apparatus and biases the locking member 13 in the d direction; This sensor detects the presence or absence of the cassette holder 11 at this position.

In the above configuration, when the cassette holder 11 is in the eject position, the lock member 1
The protrusion 13b of No. 3 is located at the lower part of the vertical groove '7a of the 1-shaped groove 17, and the roller 13a is separated from the hook 12 and is in an unlocked state.

When power is supplied to the main body of the recording and reproducing apparatus, when the cassette holder 11 is pushed down to the lock position, the cassette holder 11 is detected by the sensor 20, and the motor 1
5 is driven, and the pinion portion 15a is driven in the e direction. As a result, the transmission member 14 is moved in the f direction while the protrusion 13b of the lock member 13 remains engaged with the vertical groove 17a of the single-shaped groove 17, and the lock member 13 is rotated in the d direction. Then, as shown in FIG. 2, the roller 13a is engaged with the hook 12 and locked. Further, when an instruction to release the lock is given, the binion part i5a is rotated in the q direction, and in this state, the transmission member 14 is moved in the h direction, and the lock member 13 is rotated in one direction, and the lock is released. .

Furthermore, when power is not supplied to the main body of the recording/reproducing apparatus, by strongly pushing down the cassette holder 11 from the eject position to below the lock position, the sensor 20 is not activated, as shown in FIG.
When the hook 12 comes into contact with the protrusion 14c of the transmission member 14,
The transmission member 14 resists the first biasing spring 18 to
6 in the j direction, the protrusion 13b of the locking member 13 can be handled from the vertical groove 17a and enters 117b,
The locking member 13 is d due to the attachment effort of the second gate spring 19.
The roller 13a is engaged with the hook 12 and locked as shown in FIG. 4. During subsequent operation, when power is supplied, the binion portion 15a of the motor 15 is rotated in the e direction, and the roller 13a is moved to the hook 1.
2, the transmission member 14 is moved in the f direction, and as shown in FIG.
is separated from the hook 12, the first biasing spring 18
The protrusion 13b of the locking member 13 is rotated in the direction around the fixed pin 16 by the
7 from the horizontal groove 17b to the lower part of the vertical groove 17a, and as shown in FIG. Next, when there is an instruction to remove the lock, the pinion portion 15a of the motor 15 is rotated in the q direction from this state, and the lock is released as described above.

In the above embodiment, when power is supplied, the motor 1
5 has been described, but by adjusting the driving timing of the motor 15, etc., the locking may always be performed as shown in FIGS. 2 to 5. In either case, However, when the power is turned on for subsequent use, it is possible to maintain a state in which the lock does not come off as shown in FIG.

As described above, according to the present invention, the cassette holder can be reliably locked by the driving means when power is supplied to the main body of the recording/reproducing apparatus, and even when power is not supplied, the cassette holder can be locked to the gate. In this case, when the power is turned on next time, the driving means is turned off and returns to the normal locked state. This prevents damage to the cassette holder and intrusion of dirt and the like from the cassette holder.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a locking section of a magnetic recording/reproducing apparatus showing an embodiment of the present invention, and FIGS. 2 to 5 are schematic diagrams for explaining the operation of the locking section of the same magnetic recording/reproducing apparatus. FIG. 6 is a schematic diagram of a lock section of a conventional magnetic recording/reproducing apparatus, and FIG. 7 is a schematic diagram for explaining the action of the locking section of the conventional magnetic recording/reproducing apparatus. 11...Cassette holder, 12...Hook, 13.
...Lock member, 13b...Protrusion, 14...Transmission member, 14a...Long hole, 14c...Protrusion, 15-
...Motor, 16...Fixing pin, 17...L-shaped groove, 18...First biasing spring, 19...Second biasing spring. Agent Yoshihiro Morimoto = 30 Akebono 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. A cassette holder that can be raised and lowered and has a hook at its lower end, a locking means that can be rotated about a predetermined point and engaged with the hook, and a means for transmitting the locking means between a locking position and an unlocking position. a driving means for moving the transmission means through the driving means, and an elongated hole that fits into a fixing pin is provided at an end of the transmission means near the driving means in the direction of movement by the driving means;
Further, an L-shaped groove that fits into a protrusion provided on the locking means is provided at an end opposite to the elongated hole, and a protrusion that can come into contact with the lower end of the hook is provided at the upper part, and the transmitting means A first biasing spring biasing the locking means to rotate upwardly about the fixing pin, and a second biasing spring biasing the locking means in a direction to engage the hook. Magnetic recording and reproducing device.