JPH04318366A - Cassette loading device - Google Patents

Abstract

PURPOSE:To make a cassette loading device small in size and light in weight by constituting a tape guide movable and reducing the gap between a cylinder and a cap for cassette. CONSTITUTION:The tape guide is constituted on a plate B10 capable of rotating and rotationally moved linking with the rotation of a top plate 3, then, by constituting it so as to separate from the cassette 1 at the position of cassette down, the structure having the smaller gap between the cap 1a of cassette and the cylinder 8 can be formed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette mounting device for recording and reproducing video signals and the like on magnetic tape, for example, for video movies.

0002

BACKGROUND OF THE INVENTION In recent years, video movies have been required to be smaller and lighter, and the cassette loading device, which is a component thereof, is also required to be smaller and lighter.

A conventional cassette mounting device will be explained below. FIG. 16 is a perspective view of the cassette loading/unloading position of a conventional cassette loading device, and FIG. 17 is a side view of the tape guide section of the conventional cassette loading device at the cassette down position. In FIG. 16, 101 is a cassette, 101a
1 is a cassette lid, and 102 is a cassette holder that removably holds the cassette 101. 103 is arm a, 10
Reference numeral 4 denotes arms b, each of which is rotatably held at one end and slidably held at the other end, and is rotatably engaged with each other approximately at the center. 105 is a stand having a rotation center for arm a103 and a sliding groove for arm b104. A spring 106 is engaged with the arm a103 and the arm b104, and biases the cassette holder 102 from the cassette down position shown in FIG. 17 to the cassette attachment/detachment position shown in FIG. is a fixed pressing spring. An opener 108 is rotatably supported by the cassette holder 102 at an end 108a, and is also engaged with a sliding pin 103a of the arm 103. 111 is a cylinder, 109 is a guide to prevent the magnetic tape 100 from riding on the cylinder 108 and being damaged if it is slack when the cassette is down, and 110 is an exterior that rotatably holds the guide 109. .

The operation of the conventional cassette loading device constructed as described above will be explained below. First, when the cassette 101 is inserted into the cassette holder 102 from the direction of arrow A in the state shown in FIG.
The tip of the cassette 101 is disposed between the cassette 101 and the lid 101a. When the cassette holder 102 is manually moved in the direction of the cassette down position shown in FIG. The lid 10 is interlocked and rotated about the center 108a in the direction of arrow B.
Open 1a. If the magnetic tape 100 becomes slack when moved further, the magnetic tape 100 moves along the guide 109 in the direction of the cassette down position shown in FIG. 17 without being caught on the cylinder 111. In the cassette down position shown in FIG. 17, the cassette holder 102 has a locking mechanism (
(not shown) is locked in a predetermined position on the apparatus main body, and the cassette 101 is mounted and fixed on the apparatus main body. At this time, the guide 109 comes into contact with the cassette lid 101a, rotates around the rotation axis 109a as shown in FIG.
01a and the cylinder 111. Next, when the locking mechanism is released, the biasing force of the spring 106 causes the arm a10 to
3. Arm b104 rotates and cassette holder 102
returns to the position shown in FIG. 16, where the cassette 101 can be installed and removed. At that time, the guide 109 is released from the pressure of the cassette lid 101a, returns to its original position, and then presses the cassette lid 101a.
closes.

[0005]

[Problems to be Solved by the Invention] However, in the above conventional configuration, since the guide 109 is attached to the exterior, it is difficult to achieve positional accuracy with the cylinder 111, and a gap with the cylinder 111 must be secured. However, there was a problem in that it could not be made smaller. Further, the cassette lid 101a must be opened at an early timing, and the configuration of the opener 108 also has a problem in that there is little design margin.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a cassette loading device that can reliably guide a magnetic tape with a simple configuration and can be miniaturized.

[0007]

[Means for Solving the Problems] In order to achieve this object, the cassette mounting device of the present invention includes a cassette holder for storing a cassette with a magnetic tape stored therein, and a first cassette holder that allows the cassette to be attached and detached from the cassette holder. The cassette holder is equipped with a guide means for guiding the magnetic tape when moving from one position to a second position where recording or reproduction is performed on the magnetic tape, and a moving means for moving the guide means in conjunction with the movement of the cassette holder. When in the second position, the guide means is configured to be movable by the moving means in a direction away from the cassette.

[0008]

[Operation] With this configuration, the position between the cassette lid and the cylinder prevents the magnetic tape from riding on the cylinder and damaging the tape when it is slack until the bottom edge of the magnetic tape passes the top of the cylinder. Since the tape guide can be moved in conjunction with the movement of the cassette, the gap between the cylinder and the cassette lid can be reduced, making the cassette loading device more compact and compact.
It can be made thinner.

[0009]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a cassette, 1a
is a cassette lid, 1b is a magnetic tape, 2 is a pair of left and right cassette holders, 3 is a top plate, 4 is an arm, 5 is a stand, 6 is an up spring, 7 is an open lever, each cassette holder 2 is The arm 4 is rotatably supported by the support portion 2a, and is slidably engaged with the cam groove portion 3c of the top plate 3 by the support portion 2b. The top plate 3 is rotatably supported by the stand 5 around the support part 3a, and the arm 4 is rotatably supported by the top plate 3 around the support part 4a, and further supported by the stand by the support part 4b. It is slidably engaged with the sliding groove 5a of No. 5. The up spring 6 is locked to the top plate 3 at an engaging portion 3b, and is rotatably locked to the arm 4 and a support portion 4c. The open lever 7 is rotatably supported by the stand 5 at a support portion 7a, and is slidably engaged with a pin 8 implanted in the top plate 3 through a cam groove 3b. 8 is a cylinder, 9 is a plate A screwed to the stand 5, 10 is a plate B that is rotatably held around a pin 12 caulked to the plate A9,
11 is a tape guide fixed to plate B10, 13
is a spring that urges the plate B10 in the direction of arrow C.

The operation of one embodiment of the cassette loading device constructed as described above will be explained using FIGS. 3, 4, 5, 6, and 7 in addition to FIGS. 1 and 2. First, when the cassette 1 is inserted into the cassette holder 2 in the direction of arrow A, the tip of the open lever 7 is placed in a position where it reliably contacts the lid 1a of the cassette 1, as shown in FIG. Next, when manually pushing from the direction of arrow F, the top plate 3
The arm 4 rotates around the support part 3a, and the arm 4 has one end 4.
The supporting portion 2a moves in the direction of arrow B as the other end 4b slides along the sliding groove 5a. At this time,
The other end 2b of the cassette holder 2 slides along the cam groove 3c of the top plate 3 and moves in the direction of arrow B, so the cassette holder 2 moves in parallel in the direction of arrow B. At this time, the open lever 7 moves around the support part 7a as shown in FIGS.
The tip of the cassette lid 1a comes into contact with the surface 7c of the open lever 7, and is rotated along the surface 7c to be opened. At this time, the position of the tape guide 11 is such that the lower end of the magnetic tape 1b passes through the upper end of the cylinder 8 as shown in FIG. 5(a).
The magnetic tape 1b is located at the position shown in FIG. 2 to prevent the magnetic tape 1b from riding on the cylinder 8 and being damaged if it is slack. At this time, tape guide 1
1 is deformed in the direction of arrow D when the cassette lid 1a comes into contact with the tip, but since it is made of a torsion coil spring, when the cassette lid 1a passes over it, it returns to its original state due to its restoring force. Next, when the position shown in FIGS. 5(b) and 5(c) is reached, the end surface 3d of the top plate 3 comes into contact with the end surface 10a of the plate B10 (FIG. 2(a)), and the plate B10 is moved around the pin 12 as a fulcrum. 6(a),(b) by rotating in the opposite direction to C.
) to the position shown. Furthermore, top plate 3
As the cassette 1 is rotated, the cassette 1 is transferred to the cassette down position shown in FIG. 7, and is engaged with the positioning pin 14 of the main body of the apparatus to be mounted in a predetermined position. In this position, the top plate 3 is locked in a predetermined position on the main body of the apparatus by a locking mechanism (not shown). In this position, the arm 4 is
A is biased in the direction of arrow E by the up spring 6, and the other end 4b is configured so as not to be restrained by the sliding groove 5a, so the force is transmitted to the cassette holder 2, and the cassette 1 is attached to the main body of the apparatus. It will be biased in the direction of fixation. At this time, the lid 1a of the cassette 1 is completely opened. Furthermore, when the locking mechanism is released, the top plate 3 is rotated in the direction opposite to the arrow F by the biasing force of the up spring 6, as shown in FIG. and return to the position shown in FIG. 1 where the cassette can be attached and detached. At this time, cover 1 of cassette 1
a moves in the opposite direction to the above-mentioned cassette-down movement, comes into contact with the tip of the tape guide 11, and is deformed in the direction opposite to arrow D; however, when released from contact with the lid 1a of the cassette 1, the spring Force returns to the original state.

As described above, according to this embodiment, by moving the tape guide 11 in conjunction with the rotation of the top plate 3 while ensuring the positional accuracy of the tape guide 11 and the cylinder 8, when the cassette is down, cassette lid 1a
The amount of opening can be reduced, a thin cassette mounting device can be constructed, and since the tape guide 11 is constructed of a coil spring, the structure is strong against plastic deformation when the cassette is lowered.

(Embodiment 2) A second embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 8 and 9, 21 is a cassette;
1a is a cassette lid, 21b is a magnetic tape, 22 is a pair of left and right cassette holders, 23 is a top plate, 24 is an arm, 25 is a stand, 26 is an up spring, 27 is an open lever, and each cassette holder 22 is rotatably supported on the arm 24 by the support part 22a, and the cam groove 2 of the top plate 23 is supported by the support part 22b.
3c in a slidable manner. The top plate 23 is rotatably supported by the stand 25 around a support part 23a, and the arm 24 is rotatably supported by the top plate 23 around a support part 24a. It is slidably engaged with the sliding groove 25a of No. 25. The up spring 26 is locked to the top plate 23 at an engaging portion 23b, and is rotatably locked to an arm 24 and a support portion 24c. The open lever 27 is rotatably supported on the stand 25 by a support portion 27a, and is connected to a pin 28 implanted in the top plate 23 and a cam groove 23b.
are slidably engaged. 28 is a cylinder, 29 is a plate A that is screwed to the stand 25, 30 is a plate B that is rotatably held around a pin 32 caulked to the plate A 29, and 31 is a tape guide that is fixed to the plate B 30. , 33 points plate B30 to arrow C
It is a spring that is biased in the direction.

Regarding one embodiment of the cassette loading device constructed as described above, FIGS. 10 and 11 are shown in addition to FIGS. 8 and 9.
, 12, 13, and 14, its operation will be explained. First, when the cassette 21 is inserted into the cassette holder 22 in the direction of arrow A, the tip of the open lever 27 is
The cover 21a of the cassette shown in FIG. Next, when manually pushed in the direction of arrow F, the top plate 23 rotates around the support part 23a, the arm 24 rotates around one end 24a, and the other end 24b slides along the sliding groove 25a. Therefore, the support portion 22a moves in the direction of arrow B. At this time, the other end 22 of the cassette holder 22
b slides along the cam groove 23c of the top plate 23 and moves in the direction of arrow B, so the cassette holder 22 moves in parallel in the direction of arrow B. At this time, open lever 27
As shown in FIGS. 11(a) to 11(c), the cassette lid 21a rotates along the cam groove 27b around the support portion 27a in conjunction with the rotation of the pin 28, and the tip of the cassette lid 21a is connected to the open lever 27.
It is opened by contacting the surface 27c and rotating along the surface 27c. At this time, as shown in FIG. 13(a), the tape guide 3
1 is deformed in the direction of arrow D when the cassette lid 21a comes into contact with the tip, but as it is made of a plate-shaped resin elastic body as shown in the figure, it returns to its original state when the cassette lid 21a passes over it. Returning, the tape guide 31 is at the position shown in FIG. 9 until the lower end of the magnetic tape 21b passes the upper end of the cylinder 28 as shown in FIG. Prevent damage from occurring. Next, Fig. 12(b), (
When the position shown in c) is reached, the end surface 23 of the top plate 23
d comes into contact with the end surface 30a of the plate B30 (Fig. 9(a)
), the plate B30 rotates about the pin 32 in the direction opposite to the arrow C and moves to the position shown in FIGS. 13(a) and 13(b). Further, as the top plate 23 is rotated, the cassette 21 is moved to the cassette-down position shown in FIG. 15, and is engaged with the positioning pin 34 of the main body of the apparatus to be mounted in a predetermined position. At this position, the top plate 23 is locked in a predetermined position on the main body of the apparatus by a locking mechanism (not shown). In this position, the arm 24 is biased in the direction of arrow E by the up spring 26 around the support portion 24a, and the other end 24b
Since it is configured so that it is not restricted by the sliding groove 25a, the force is transmitted to the cassette holder 22 and urges the cassette 21 in the direction of fixing it to the main body of the apparatus. At this time, the lid 21a of the cassette is completely opened as shown in FIG. Furthermore, when the locking mechanism is released, the top plate 23 rotates in the direction opposite to the arrow F due to the biasing force of the up spring 26, and this movement causes the cassette holder 22 to move parallel to the direction opposite to the arrow B via the arm 24. Return to the position shown in FIG. 8 where the cassette can be attached and detached. At this time, the cassette lid 21a moves in the opposite direction to the above-mentioned cassette-down movement, comes into contact with the tip of the tape guide 31, and is deformed in the direction opposite to arrow D, but from the contact with the cassette lid 1a, When released, it returns to its original state due to elasticity.

As described above, according to this embodiment, by moving the tape guide 31 in conjunction with the rotation of the top plate 23 while ensuring the positional accuracy of the tape guide 31 and the cylinder 28, when the cassette is down, The amount of opening of the cassette lid 21a can be reduced, and a thin cassette mounting device can be constructed.Furthermore, since the tape guide 31 is made of a plate-like elastic body, the cylinder 28 and the cassette lid 21a are closed when the cassette is lowered. The gap between can be reduced.

[0017]

As described above, the present invention improves the positional accuracy of the cylinder and tape guide by configuring the tape guide to be movable, and by configuring the tape guide from an elastic body and attaching the unit to a stand. This is an excellent cassette mounting system that can be made smaller and thinner by creating a mechanism that prevents the magnetic tape from riding on the cylinder and damaging the tape even if the magnetic tape is slack in the small space above the cylinder. It is possible to realize a device.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view of essential parts showing the cassette attachment/detachment position of a cassette loading device in a first embodiment of the present invention;

[Figure 2]
(a) is a schematic plan view showing the tape guide section of the same device in the same embodiment; (b) is a schematic side view showing the tape guide section of the same device in the same embodiment.

[Figure 3] (a) is a cutaway side view of the main part showing the cassette attachment/detachment position of the same device; (b) is a perspective view showing the cassette attachment/detachment position of the same device;

[Figure 4
] (a) is a cutaway side view of the main part to explain the operation of the open lever part of the same device; (b) is a cutaway side view of the main part to explain the action of the open lever part of the same device; (c) is a cutaway side view of the main part to explain the operation of the open lever part of the device.

[Fig. 5] (a) is a side view for explaining the operation of the tape guide section of the same device; (b) is a side view for explaining the operation of the tape guide section of the same device; (c) is a side view for explaining the operation of the tape guide section of the same device; Enlarged side view to explain the operation of the guide section

FIG. 6(a) is a schematic plan view of the tape guide section of the device (b)
) is a schematic side view of the tape guide part of the device.

[Figure 7] (a) is a side view of the device in the cassette down position; (b) is a perspective view of the device in the cassette down position;

FIG. 8 is a cutaway side view of essential parts showing the cassette attachment/detachment position of the cassette loading device in the second embodiment of the present invention;

FIG. 9(a) is a schematic plan view showing the tape guide part of the same embodiment; FIG. 9(b) is a schematic side view showing the tape guide part of the same embodiment;

FIG. 10 (a) is a side view showing the cassette attachment/detachment position of the same embodiment; (b) is a perspective view showing the cassette attachment/detachment position of the same embodiment;

FIG. 11(a) is a cutaway side view of the main part for explaining the operation of the open lever part of the same embodiment; FIG. Side view (c) is a cutaway side view of the main part for explaining the operation of the open lever part of the same embodiment.

FIG. 12 (a) is a side view for explaining the operation of the tape guide section of the same embodiment; (b) is a side view for explaining the operation of the tape guide section of the same embodiment; (c) is a side view for explaining the operation of the tape guide section of the same embodiment; Enlarged side view to explain the operation of the example tape guide section

FIG. 13 (a) is a schematic side view showing the tape guide part of the same embodiment; (b) is a schematic side view showing the tape guide part of the same embodiment;

FIG. 14 (a) is a plan view of the cassette down position of the same embodiment; (b) is a side view of the cassette down position of the same embodiment;

[Figure 1
5 (a) Side view showing the cassette mounting position of a conventional cassette mounting device (b) Perspective view showing the cassette mounting position of the conventional cassette mounting device

[Fig. 16] A perspective view showing the cassette attachment/detachment position of the device.

[Figure 17] Side view of the tape guide section of the device at the cassette down position

[Explanation of symbols]

1 Cassette 2　Cassette holder 3 Top plate 4 Arm 5 Stand 7 Open lever 8 Cylinder 9 Plate A 10 Plate B 11 Tape guide

Claims (4)

[Claims] 1. A cassette holder for storing a cassette with a magnetic tape stored therein; and a cassette holder for moving the cassette holder from a first position where the cassette can be attached and removed to a second position where recording or reproduction can be performed on the magnetic tape. a guide means for guiding the magnetic tape when the cassette holder is in the second position; and a moving means for moving the guide means in conjunction with movement of the cassette holder; A cassette mounting device, characterized in that it can be moved by the moving means in a direction away from the cassette. 2. The cassette loading device according to claim 1, wherein the guide means comprises a first member rotatably supported by the device body and a guide member that guides the magnetic tape using an elastic body. . 3. The cassette mounting device according to claim 2, wherein the guide member is composed of a coil spring. 4. The cassette mounting device according to claim 2, wherein the guide member is made of a plate-like elastic body.