JPH0532823B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cassette mounting device that can be used in a cassette type magnetic recording and reproducing device.

Structures of conventional examples and their problems In recent years, in the trend of becoming lighter, thinner, shorter, and smaller, there has been fierce competition to reduce the size and weight of magnetic recording and reproducing devices, and miniaturization and weight reduction are progressing year by year. Additionally, as cameras become smaller, products that combine a camera and a VTR are being created as a new form.

A conventional example will be described below with reference to the drawings.

Fig. 1 is a schematic side view of the cassette loading device including the casing, where 1 is an axis for positioning the cassette 2 on the chassis, 3 and 4 (3' and 4' are approximately symmetrical positions) are the shafts on the chassis 1. A cylinder 5, which typically has a magnetic head, is arranged as shown in the figure. Insert the cassette 2 into the housing 6 in the direction of arrow A at the temporary attachment position, push down the housing 6 in the direction of arrow B, and use a mechanism (not shown) that locks the housing 6 when lowered to a predetermined position. The housing is locked, and at this time the cassette 2 is pressed and fitted onto the shafts 3, 4, 3', 4' by the leaf springs 7 and positioned, completing the proper mounting of the cassette. Conversely, when removing cassette 2, the lock is released by operating the eject button, etc. (not shown).
The cassette is lifted in the opposite direction and returned to the temporary mounting position, allowing the cassette to be removed.

In general, in portable VTRs, and in particular in VTRs that are integrated with a camera, the position of the cassette mounting device can be in any position depending on the usage state of the product. Figure 2 shows a VTR integrated with a camera.
8 is a perspective view of the eyepiece section, 9 is a lens section, 1
0 indicates the grip that supports the main body, and 11 indicates the exterior surface of the cassette mounting device. In this product form, the cassette 2 is placed on the side of the main body, and it is assumed that the eject button etc. may be operated inadvertently. The cassette may fall due to the force of the cassette mounting device being lifted up, vibration, etc., and if the conditions are bad, the cassette may be damaged. Therefore, for example, it is possible to prevent the cassette from falling by increasing the pressing force of 7 that presses the cassette, but it is possible to prevent the cassette from falling due to strong sliding. This also makes the cassette feel unpleasant when inserted, and the quality of the product is significantly degraded.

OBJECTS OF THE INVENTION The present invention aims to provide a means for solving such problems at low cost.

Structure of the Invention The device has a temporary mounting position where the cassette is inserted and a regular mounting position where the cassette is completely mounted on the magnetic recording/reproducing device through reciprocating motion, and means for locking the cassette in the casing portion into which the cassette is inserted; Prevents the cassette from falling due to careless operation,
In addition, the cassette loading device is provided with a button for releasing the locking means near the opening into which the cassette is inserted, thereby making it possible to easily take out the cassette.

DESCRIPTION OF EMBODIMENTS An embodiment according to the present invention will be described below with reference to FIGS. 3 to 7.

FIG. 3 shows a perspective view of the magnetic recording and reproducing apparatus, with the cassette mounting device 12 in an elevated state. 13
is a cassette, with a lid 1 on the front to protect the tape.
5 and a recess 1 for the grip of the cassette.
4, 14' on both sides. The bottom 16 of the casing of the cassette mounting device 12, which has an opening having approximately the same width as the cassette, is provided with stoppers 17 and 18 for regulating the insertion position of the cassette.

Although not shown, the enclosure 1
A mechanism is provided inside the casing 9 to allow the casing 20 to reciprocate between a normal mounting position where the cassette is mounted on a magnetic recording/reproducing device and a temporary mounting position where the cassette is inserted into the casing. .

FIGS. 4A and 4B show a plan view and a side view of the housing 20.

Reference numeral 21 indicated by a two-dot chain line is the exterior part of the casing, and is shown as a phase image line for convenience to make the drawing easier to read. A stopper 18 is located under the bottom surface 16 of the casing.
A lever 25 is provided which is slidable in the direction of insertion of the cassette, is guided by guide pins 23 and 24 in a direction opposite to the direction of arrow D, and is biased by a spring 22. A lever 29 is provided on the side of the housing, with one end 26 peeking out into the housing, and the other end 27 disposed in the opening of the housing in the shape of a knob, and rotatable around the shaft of 28. Bearing portion 3 of the shaft portion 28
A member 30 forming part 2 is fixed to the side surface with screws 31. Although not shown, the lever 29 is urged clockwise by a spring around the shaft 28 in the plan view, and its position is regulated by a member 33 at 30.

Next, the operation will be explained.

By inserting the cassette 13 in the D direction,
As shown in FIGS. 5A and 5B, the protrusion 26 is in the escape position with respect to the fulcrum 28 against the spring bias of the lever 29, so it is kicked counterclockwise by the cassette and the cassette is not inserted. As the cassette is further inserted, the front surface of the cassette comes into contact with the stopper part 18, and the lever 25 is slid in the cassette insertion direction against the spring force of the spring 22. When the cassette is inserted to a predetermined position, the lever 25 is moved. The long hole part 34 is the pin 24
It comes into contact with and stops sliding. At this time, the convex part 26 of the lever 29 enters the concave part 14 of the cassette,
As shown in the plan view of FIG. 6A, the cassette is locked into the housing.

Next, when taking out the cassette, as shown in FIGS.
By operating the knob part 27 counterclockwise while holding it with one hand, the convex part 2 of the lever 29
6 and the recess 14 of the cassette are unlocked,
Due to the spring force applied by the spring 22, the cassette moves in the direction of being ejected from the casing, and a part of the cassette fits between the fingers holding the casing, and the cassette is transferred to the cassette. The cassette can be easily taken out.

In the description of this embodiment, a recess provided in the cassette is used, but it is also possible to use the back surface 36 of the cassette, for example.

Effects of the Invention As the device becomes smaller and lighter, it exhibits greater mobility and can be used in a variety of situations. Furthermore, recorded tapes are the property of users and should be protected. However, if you sacrifice operability for protection and make it difficult to use, the value of the product will decrease.

From this point of view, the present invention has been developed to prevent the cassette from falling even in the event of careless operation and to easily remove the cassette without impairing operability, thereby protecting the tape and simplifying the operation. The practical value is extremely high.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a conventional cassette mounting device, Fig. 2 is an external perspective view of a camera-integrated VTR, Fig. 3 is a perspective view of a cassette mounting device according to an embodiment of the present invention, and Figs. 4A and B 5A and 7B are a plan view and a side view of the same embodiment, and FIGS. 5A and 7A and 7A and 7B are operation diagrams of the same embodiment. 13...cassette, 14...recess provided in the cassette, 17, 18...stopper, 27...cassette eject knob, 26...cassette lock portion.

Claims (1)

[Claims] 1. A cassette having a recess that fits into a side surface, a cassette holder that allows the cassette to be moved between an attachment/detachment position and an attachment completion position for attaching the cassette to the main body of the apparatus, and a cassette insertion opening of the cassette holder. A lock release lever is rotatably provided on a side surface near the cassette, and the lock release lever has a convex portion at one end that fits into the cassette recess, and a convex portion that fits into the cassette recess at the other end. 1. A cassette mounting device comprising a knob for releasing the fitting, and the knob-like lever can be held from both sides with one hand toward the center of the cassette.