JPH04318367A - Cassette loading device - Google Patents

Abstract

PURPOSE:To solve the problem in a conventional cassette loading by constituting the device so that the cassette is pressed by a member for moving a cassette holder in place of the constitution in the conventional cassette loading device where moving of the cassette holder and pressing the cassette is carried out by other members respectively. CONSTITUTION:By constituting in such a manner that the cassette holder 2 is fitted to a top plate 3 and an arm 4 so as to move in parallel by the rotation of top plate 3, the pressing force of an up-spring 6 is transmitted to the cassette holder 2 through the arm 4 when the top plate 3 is fixed to the main body of device at the position of the cassette down, thereby the cassette 1 can be energized in the direction fixing it to the main body of device, and the device can be miniaturized and made light in weight.

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. 4 is a perspective view of the cassette mounting/detaching position of a conventional cassette mounting device, and FIG. 5 is a sectional view of the conventional cassette mounting device when the cassette is down. In FIG. 4, 101 is a cassette, and 102 is a cassette holder that holds the cassette 101 in a detachable manner. Reference numerals 108 and 109 are shafts for coordinating the left and right movement of the cassette holder 102 and stand 105, respectively. Reference numeral 103 indicates an arm a, and 104 indicates an arm b, each of which is rotatably held at one end and slidably at the other end, and are rotatably engaged with each other approximately at the center. 105 is arm a10
This stand has a rotation center of 3 and a sliding groove for the arm b104. A spring 106 is engaged with the arm a103 and the arm b104, and urges the cassette holder 102 from the cassette down position shown in FIG. 5 to the cassette attachment/detachment position shown in FIG. A pressure spring 107 has one end fixed to the cassette holder 102.

The operation of the conventional cassette loading device constructed as described above will be explained below. First, in the state shown in FIG. 4, the cassette 101 is inserted into the cassette holder 102 from the direction of arrow A and manually moved to the cassette down position shown in FIG. In this position, the cassette 101 engages with the positioning pin 110 of the main body of the device, and the pressing spring 107
It is pressed in the direction of arrow B to be installed and fixed in a predetermined position.

[0005]

However, in the above conventional configuration, when the cassette 101 is installed, the pressure spring 1
07 is applied to the cassette holder 102, but if the cassette 101 is not attached, the reaction force of the pressing spring 107 is not applied to the cassette holder 102, so the cassette 10
1, the position of the cassette holder 102 changes depending on the presence or absence of the cassette holder 102. In addition, a pair of pressing springs 107 are required to fix the cassette 101 to the main body of the apparatus in the cassette down position shown in FIG. The problem is that this increases the number of parts, which is disadvantageous to miniaturization and weight reduction. Furthermore, in order to improve the first problem mentioned above, it is necessary to configure a separate mechanism from the cassette holder, and for example, when making a video movie as a final product, the number of parts increases, making it larger and heavier. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a cassette mounting device that has a simple structure and can provide a stable position of the cassette mounting device regardless of the presence or absence of a cassette.

[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 containing a magnetic tape therein, and a cassette holder rotatably supported by the main body of the device. a second member rotatably supported at one end of the first member and having the other end engaged with a cam groove provided in the main body of the device; and an elastic body, and the cassette holder It is rotatably connected to the second member and also engaged with the cam groove provided in the first member, and an elastic body is engaged with the first member and the second member, and the biasing force of the elastic body The first member is rotated to move the cassette holder from the first position for recording or reproducing magnetic tape to the second position for attaching and detaching the cassette, and the first member resists the biasing force of the elastic body. The cassette holder is configured to urge the cassette holder in a direction to press it against the apparatus main body when the cassette holder is locked to the apparatus main body.

[0008]

[Operation] With this configuration, the biasing force of the elastic body used to move the cassette holder (cassette) between the first position and the second position is fixed when the first member is fixed at a predetermined position in the first position. The second member acts against the cassette holder in the direction of pressing the cassette toward the main body of the device, so this elastic body alone can move the cassette up and down and bias the cassette against the device. The positional relationship of the mounting devices does not change, and a stable positional relationship can be obtained. Furthermore, the number of parts can be reduced, making it possible to make the device smaller and lighter.

[0009]

【Example】

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

In FIG. 1, 1 is a cassette, 2 is a cassette holder, 3 is a top plate 4 is an arm, 5 is a stand, and 6 is a spirally formed up spring. The cassette holder 2 is rotatably supported by the arm 4 at a support portion 2a, and is slidably engaged with a cam groove 3c of the top plate 3 at a support portion 2b. The top plate 3 is rotatably supported by the stand 5 around a support part 3a, and the arm 4 is rotatably supported by the top plate 3 around the support part 4a. It is slidably engaged with the sliding groove 5a of. The up spring 6 is locked by the top plate 3 and the support part 3b,
It is rotatably locked by the arm 4 and the support part 4c.

The operation of one embodiment of the cassette loading device constructed as described above will be explained using FIGS. 2 and 3 in addition to FIG. 1. First, as shown in Figure 1, cassette 1
into the cassette holder 2 in the direction of arrow A, and then
When manually pushed from the direction, the top plate 3 rotates around the support part 3a as shown in FIG. Since the support part 2a slides along the support part sliding groove 5a, the support part 2a
to move in the direction of arrow B. At this time, the support portion 2b disposed at the other end of the cassette holder 2 slides along the cam groove portion 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. moreover,
As the top plate 3 is rotated, the cassette 1 becomes as shown in Figure 3.
The cassette is moved to the cassette-down position shown in FIG. 2, and is engaged with the positioning pin 7 of the main body of the apparatus to be installed at 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). At this time, arm 4
is biased in the direction of arrow C by an up spring 6 around the support part 4a, and the support part 4b disposed at the other end of the arm is configured so as not to be restrained by the sliding groove 5a, and the force is applied to the support part. 2a to the cassette holder 2, and the upper surface part 2c of the cassette holder 2 contacts the upper surface of the cassette 1.
This will bias the cassette 1 in the direction of fixing it to the main body of the apparatus. Furthermore, when the locking mechanism is released, the top plate 3 rotates in the direction opposite to the arrow D due to the biasing force of the up spring 6, and this movement moves the cassette holder 2 parallel to the direction opposite to the arrow B via the arm 4. Return to the position shown in Figure 1, where the cassette can be attached and removed.

As described above, according to this embodiment, the movement of the cassette holder 2 and the rotation of the top plate 3 are controlled by the arm 4.
By doing so, the cassette holder 2 can be biased in the direction of fixing the cassette 1 to the main body of the apparatus by the biasing force of the up spring 6 in the cassette down position. Further, by forming the up spring 6 in a spiral shape, the length of the cassette holder 2 in the longitudinal direction can be shortened, and the device can be made smaller.

[0013]

[Effects of the Invention] As described above, the present invention fixes the cassette holder to the main body of the apparatus by moving the cassette holder in the cassette down position by applying the elastic force of the up spring through the rotation of the top plate and the arm. This eliminates the need for a separate member such as a pressing spring, which was conventionally required to press the cassette to the main body of the device, and also makes it easier to move the cassette holder from side to side. Since the shaft required for alignment can be eliminated, it is possible to realize an excellent cassette mounting device that can stabilize the position of the cassette mounting device, reduce the number of parts, and be smaller and lighter.

[Brief explanation of drawings]

FIG. 1 is a side view showing the cassette attachment/detachment position of a cassette loading device in an embodiment of the present invention.

[Figure 2] (a) is a side view showing the operating state of the device (b)
is a perspective view showing the operating state of the device.

[Fig. 3] (a) is a cutaway side view of the main part showing the cassette down position of the device; (b) is a cutaway perspective view of the main part showing the cassette down position of the same device;

[Fig. 4] A perspective view showing the cassette mounting position in a conventional cassette mounting device.

[Fig. 5] Cross-sectional view showing the cassette down position in a conventional cassette loading device

[Explanation of symbols]

1 Cassette 2　Cassette holder 3 Top plate 4 Arm 5 Stand 6 Up spring

Claims (2)

[Claims] Claims: 1. A cassette holder for storing a cassette containing a magnetic tape therein; a first member rotatably supported by an apparatus main body; and one end of the first member rotatably supported. and a second member whose other end engages with a cam groove provided in the device main body, and a resilient body, the cassette holder being rotatably connected to the second member, and the first member being rotatably connected to the second member. It also engages with a cam groove provided on the member,
The elastic body is engaged with the first member and the second member, and the biasing force of the elastic body causes the cassette holder to perform a rotational operation with the first member to record or reproduce information on the magnetic tape. When the cassette is moved from the first position to a second position where the cassette can be attached and detached and the first member is locked to the apparatus main body against the biasing force of the elastic body, the cassette holder is attached to the apparatus main body. A cassette loading device characterized by being biased in a direction of pressing. 2. The cassette mounting device according to claim 1, wherein the elastic body has a spiral shape.