JPH0510267Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette loading device used in a magnetic recording/reproducing device, and more particularly to a locking mechanism for a cassette garage provided in the cassette loading device.

Prior Art Conventionally, when loading a cassette into a magnetic recording/reproducing apparatus, a cassette loading apparatus A shown in FIG. 5 has been used.

As shown in the figure, the cassette loading device A is provided with a cassette garage 2 for holding a cassette 1 in order to load the cassette 1 into a magnetic recording/reproducing device.

A lid 6 is attached to the front end of the cassette body 3 of the cassette 1 in the sliding direction (arrow 4) of a slider 10 (described later) so as to be openable upward. Also,
A locking pawl (not shown) for locking the lid 6 is slidably pivoted on the inside of the side plate of the cassette body 3.

The cassette garage 2 engages with a pawl 9 for positionally regulating the cassette 1 and a locking pawl of the cassette 1, thereby locking the pawl and the lid 6.
It has a lock release claw 14 which is slidable in the sliding direction of the slider for releasing the engagement with the slider. Furthermore, the cassette garage 2 has an elevating linkage mechanism B (described later) that allows the slider 10 to be positioned at a cassette attachment/detachment position (the position shown in FIG.
It is supported so as to be able to move up and down between a positioning pin 38 of a magnetic recording/reproducing apparatus main body 37 (to be described later) and a position for loading a cassette stay 39.

In the elevating link mechanism B, one end of the link 11 is slidably attached to the side surface of the rear end of the cassette garage 2 in the sliding direction of the slider. Furthermore, a slide pin 11a pivotally attached to the other end of the link 11 is inserted into a long hole 10b formed in the side plate 10a of the slider 10 in parallel to the sliding direction of the slider.
The side plate 1 is slidably attached to the side plate 1.
One end of the link 12 is slidably attached to Oa. Further, a slide pin 12a pivotally attached to the other end of the link 12 is attached to the cassette garage 2.
It is slidably mounted in a long hole 2a bored in the front end side surface of the slider in parallel to the slider sliding direction.

The links 11 and 12 are rotatably attached to each other by pins 13 at their central portions, forming an X-shaped link mechanism.

The above-mentioned links 11, 12, slide pin 11
A, 12a, pin 13, etc. constitute a link mechanism, and one set of link mechanisms is connected to the fifth cassette garage 2.
An elevating link mechanism B is configured by also providing the opposite side surface in the figure.

The slider 10 is formed with cassette guide parts 15 and 16 for positioning the cassette 1 together with the pawl 9, and further elastically urges the cassette garage 2 upward to hold it in the position shown in FIG. A spring 17 is attached for this purpose. Further, on the side plate 10c of the slider 10, a lever 20, which has a cam shaft 19 at one end and an engagement pin 18 for opening the lid 6 of the cassette 1 upwardly at the other end, is slid by a shaft 21. The slider 10 is movably attached to the shaft, and a rack 22 is provided on the lower surface in parallel with the sliding direction of the slider 10.
is fixed. And the slider 10 above
is the side plate 2 inside the main body 23 of the cassette loading device A.
It is supported by rollers 24 provided at 5 so as to be slidable in the direction of arrow 4.

A stopper (not shown) is attached to the side plate 25 inside the main body 23 for bringing the lock release pawl 14 into abutting engagement with the locking pawl when the slider 10 slides in the direction of arrow 4. At the same time, a cam groove 26 is formed which has a bent portion 26' for guiding and sliding the camshaft 19 in order to slide the lever 20. Furthermore, the main body 2
A drive gear 30 that meshes with a final gear 29 of a transmission mechanism 28 for transmitting the rotation of the drive motor 27 is rotatably attached to the side plate 25 inside the drive motor 27.
A stepped gear 31 for transmitting data to the slider 10 and the rack 2 is rotatably attached to the shaft.
2. A sliding mechanism is constituted by the stepped gear 31).

The drive gear 30 is formed with a spiral cam groove 32 whose radial distance from the center increases sequentially according to the center angle. A cam follower 35 rotatably attached to one end of a cassette crimping lever 34 which is slidably attached to the side plate 25 inside the main body 23 via a shaft 33 is slidably attached to the cam groove 32. It's embedded. The cassette crimping lever 34 is the cassette crimping lever 3.
4 is brought into contact with the upper surface of the cassette 1, and the elevating link mechanism B
This cassette 1 is driven downward together with the cassette garage 2 supported by the cassette garage 2 above the set loading position, and the positioning pin 3 of the magnetic recording/reproducing apparatus main body 37 is driven downward.
8 and the cassette stay 39.

In the conventional cassette loading device A configured as described above, the rack 22 of the slider 10
However, the drive motor 27 drives the slider in the sliding direction (arrow 4) via the transmission mechanism 28, drive gear 30, and stepped gear 31 (at this time, the drive gear 30 rotates counterclockwise). Then, the cassette 1 held in the cassette garage 2 is also moved in the sliding direction of the slider, and the lock release claw 14 comes into contact with a stopper (not shown), and the lock release claw 14 locks the cassette 1. By rotating the pawl, the engagement between the locking pawl and the lid 6 is released.

On the other hand, as the slider 10 slides, the engagement pin 18 provided at one end of the lever 20 moves together with the cassette 1, and after the engagement between the engagement claw and the lid 6 is released, the engagement pin 18 moves with the cassette 1. Bent portion 26' of groove 26
The camshaft 19 at the other end of the lever 20 is guided and slid downward, so that it comes into contact with the lower surface of the lid 6 of the cassette 1, pushes the lid 6 upward, and opens it slightly.

Further, when the slider 10 is slid in the slider sliding direction (arrow 4), this slider 10
The drive gear 30, which is driven together with the rack 22, also rotates counterclockwise (the cam groove 3 of the drive gear 30
rotate in a direction in which the distance from the center of 2 increases sequentially). When the cassette garage 2 holding the cassette 1 reaches the cassette loading position above, the cassette crimping lever 34, which has a cam follower 35 guided and slid by the cam groove 32 of the drive gear 30, slides counterclockwise. dynamically driven.
Then, the leaf spring 36 attached to one end of the cassette crimping lever 34 comes into contact with the upper surface of the cassette 1, and drives the cassette 1 downward together with the cassette garage 2 supported by the elevating link mechanism B. At this time, the slide pin 11a of the link 11 of the elevating link mechanism B and the link 1
The two slide pins 12a slide along the elongated holes 10b and 2a in a direction opposite to the slider sliding direction (arrow 4), and the links 11 and 12 mutually move around the pin 13. Rotate in the opposite direction.

Further, as the cassette 1 descends, the lid 6 of the cassette 1 is pushed up further upwards by the engaging pin 18, and opens wide enough to pull out the tape from the tape pulling opening. be done.

Further, the cassette 1 is driven downward by the leaf spring 36 of the cassette press lever 34, and is loaded onto the positioning pin 38 of the magnetic recording/reproducing apparatus main body 37 and the cassette stay 39.

Problems with the Prior Art However, in the conventional cassette loading device A, as described above, when the cassette garage 2 supported by the elevating link mechanism B is in the cassette attachment/detachment position, and the sliding mechanism While the cassette garage 2 is being horizontally moved from the loading/unloading position to above the loading position, the cassette garage 2 is held in the position shown in FIG. 5 only by the spring 17. When, for example, an external force acts on the cassette garage 2, the cassette garage 2 vibrates in the vertical direction.

As a result, the cassette garage 2 and the precision parts inside the cassette loading device A interfere with each other, causing damage to the precision parts.

Purpose of the invention The present invention was devised in view of the above circumstances, and prevents vertical vibration of the cassette garage when an external force is applied to the cassette garage, and protects precision parts etc. inside the cassette loading device. The purpose of this invention is to provide a highly reliable cassette loading device.

Structure of the Invention In order to achieve the above object, the main means adopted by the present invention is to hold the cassette to be loaded into the magnetic recording/reproducing device and to hold the cassette between the loading position above the cassette and the loading position. In the cassette loading device, the cassette loading device has a sliding mechanism that slides a cassette garage equipped with an elevating link mechanism for elevating the cassette between a cassette attachment/detachment position and an upper loading position together with the elevating link mechanism. a locking member provided on the mechanism that engages with the elevating link mechanism to lock the elevating link mechanism between the cassette attachment/detachment position and a predetermined position above the loading position; and a release mechanism that engages with the locking member to release the lock between the locking member and the elevating link mechanism when the cassette loading device reaches the predetermined position. .

Embodiments Hereinafter, embodiments embodying the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.

It should be noted that the following example is an example embodying the present invention, and is not intended to limit the technical scope of the present invention.

Here, FIG. 1 is a sectional perspective view of a cassette loading device according to an embodiment of the present invention, FIG. 2 is a sectional perspective view of the same when the cassette garage 2 reaches above the cassette loading position, and FIG. FIG. 2 is a perspective view taken in the direction of arrow D in FIG. 2, and FIG. 4 is a sectional perspective view of the same when the cassette is loaded.

Further, the same reference numerals will be used to describe the same elements as those of the conventional cassette loading apparatus A shown in FIG.

The cassette loading device C according to this embodiment has a first
As shown in FIGS. 4 to 4, the basic structure is almost the same as that of the conventional cassette loading device A (see FIG. 5).

In the above-mentioned cassette loading device C, the side plate 10a of the slider 10 has at one end a claw portion (locking member) 41a for locking a lock shaft 40 fixed to one end of the slide pin 11a, approximately at the center thereof. A lock lever 41 is slidably attached to a shaft 42, and is biased by a spring 43 to swing counterclockwise (the direction in which the lock shaft 40 is locked by the claw portion 41a).

The claw portion 41a of the lock lever 41 locks the lock shaft 40 of the slide pin 11a, and the slide pin 11a is inserted into the elongated hole 10b of the side plate 10a.
By locking the elevating link mechanism B by preventing the slider from sliding in the direction opposite to the sliding direction (arrow 4), the cassette garage 2 supported by the elevating link mechanism B is This is to lock the cassette garage 2 so that it does not vibrate in the vertical direction when it is between the cassette attachment/detachment position and a predetermined position above the loading position (the position where a lock release pin 47 to be described later is fixed). It is.

Furthermore, a conversion lever 44 is pivotally mounted on a shaft 45 near the lock lever 41 of the upper and lower side plates 10a. The conversion lever 44 swings counterclockwise after the cassette garage 2 passes a predetermined position, and engages one end of the conversion lever 44 with a protrusion 41b provided at the other end of the lock lever 41, further locking the lever 41. By swinging clockwise, the claw portion 41a is released from the lock shaft 40.

Furthermore, a portion above the cassette loading device on the inner surface of the side plate 46 inside the main body 23 engages with the other end of the conversion lever 44 that is horizontally moved by the sliding mechanism, and moves the conversion lever 44 counterclockwise. A lock release pin 47 for swinging drive is fixed.
Therefore, in this case, the conversion lever 44, shaft 45, lock release pin 47, etc. are engaged with the lock lever 41 having the claw portion 41a, and the claw portion 41a is engaged with the lock lever 41 having the claw portion 41a.
A release mechanism is configured to release the locking shaft 40 of the elevating link mechanism B.

Cassette loading device C configured as described above
, the rack 22 of the slider 10 is slidably driven in the slider drive direction (arrow 4) by the drive motor 27 via the transmission mechanism 28, drive gear 30, and stepped gear 31 (at this time, the drive gear 30 is rotated counterclockwise), the cassette garage 2 is locked by the claw portion 41a of the lock lever 41 so as not to vibrate in the vertical direction, and the cassette 1 held in the cassette garage 2 is rotated. is also moved in the sliding direction of the slider, and the lid 6 of the cassette 1 is pushed upward by the action of an engaging pin provided at one end of a lever (not shown), and is slightly opened.

Further, when the slider 10 is slid in the slider sliding direction, the rack 2 of the slider 10
The drive gear 30, which is driven together with the drive gear 2, also rotates counterclockwise (in a direction in which the distance from the center of the cam groove 32 of the drive gear 30 gradually increases).
When the cassette garage 2 holding the cassette 1 reaches the vicinity above the cassette loading device (see FIGS. 2 and 3), the lock release pin 47
By engaging one end of the conversion lever 44 and further swinging the conversion lever 44 counterclockwise, the cassette garage 2 is completely unlocked above the cassette loading device. Then, the cassette crimping lever 34, which has a cam follower 35 guided and slidably driven by the cam groove 32 of the drive gear 30, is swung counterclockwise. Then, the leaf spring 36 attached to one end of the cassette crimping lever 34 comes into contact with the upper surface of the cassette 1, and drives the cassette 1 downward together with the cassette garage 2 supported by the elevating link mechanism B.
At this time, the lid 6 of the cassette 1 is pushed further upwards by the engagement pin, and is opened wide enough to allow the tape to be pulled out from the tape pull-out opening.

Furthermore, the cassette 1 is driven downward by the leaf spring 36 of the cassette press lever 34, and is loaded onto the positioning pin 38 of the magnetic recording/reproducing apparatus main body 37 and the cassette stay 39 (see FIG. 4).

As described above, in the cassette loading device C of the present invention, when the cassette garage 2 supported by the elevating linkage mechanism B is at the cassette loading/unloading position, or by the sliding mechanism, the cassette garage 2 is horizontally moved from the cassette loading/unloading position to above the loading position. Even if, for example, an external force is applied to the cassette garage 2 while it is being moved, the cassette garage 2 does not vibrate vertically.

Effects of the Invention As described above, the present invention provides a cassette that holds a cassette to be loaded into a magnetic recording/reproducing apparatus and is equipped with an elevating link mechanism for elevating the cassette between the upper and lower loading positions of the cassette. A cassette loading device having a sliding mechanism that slides the garage together with the elevating link mechanism between a cassette attachment/detachment position and an upper loading position, wherein the garage is provided on the sliding mechanism and engaged with the elevating link mechanism. a locking member that locks the elevating link mechanism between a cassette attachment/detachment position and a predetermined position above a loading position; This cassette loading device is characterized by comprising a release mechanism that engages to release the lock between the locking member and the elevating link mechanism, so that when an external force is applied to the cassette garage, the cassette loading device By preventing vertical vibration of the cassette garage and protecting precision parts inside the cassette loading device, it is possible to provide a highly reliable cassette loading device.

[Brief explanation of the drawing]

FIG. 1 is a sectional perspective view of a cassette loading device according to an embodiment of the present invention, FIG. 2 is a sectional perspective view of the same when the cassette garage reaches above the cassette loading position, and FIG. FIG. 4 is a sectional perspective view of a cassette loading device, and FIG. 5 is a sectional perspective view of a conventional cassette loading device. Explanation of codes, 2...cassette garage, 40...
...Lock shaft, 41...Lock lever, 41a...Claw portion (locking member), 41b...Protrusion, 42...Shaft,
43... Spring, 44... Conversion lever, 45...
Shaft, 46...Side plate, 47...Lock release pin, B
... Lifting link mechanism, C... Cassette loading device.

Claims (1)

[Claims for Utility Model Registration] The above-mentioned cassette garage is provided with an elevating link mechanism for holding a cassette to be loaded into a magnetic recording/reproducing device and for elevating the cassette between the upper and lower loading positions of the cassette. In a cassette loading device having a sliding mechanism for sliding a cassette between a cassette attachment/detachment position and an upper loading position together with an elevating link mechanism, the elevating link mechanism is provided on the sliding mechanism and engages with the elevating link mechanism. a locking member that locks the cassette between an attachment/detachment position and a predetermined position above the loading position; and a locking member that engages with the locking member when the elevating link mechanism reaches the predetermined position together with the cassette garage. A cassette loading device characterized by comprising a release mechanism for releasing the lock between the locking member and the lifting link mechanism.