JP2596248B2 - Cassette mounting device - Google Patents

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 a magnetic tape, for example, a video movie.

[0002]

2. Description of the Related Art In recent years, video movies have been required to be smaller and lighter, and a cassette mounting device as a component thereof has also been required to be smaller and lighter.

[0003] A conventional cassette mounting apparatus will be described below. FIG. 4 is a perspective view of the cassette mounting / dismounting position of the conventional cassette mounting apparatus, and FIG. 5 is a sectional view of the conventional cassette mounting apparatus when the cassette is down. In FIG. 4, 101 is a cassette, and 102 is a cassette holder which detachably holds the cassette 101. Reference numerals 108 and 109 denote shafts for adjusting the left and right transfer of the cassette holder 102 and the stand 105, respectively. Reference numeral 103 denotes an arm a and 104 denotes an arm b, each of which is rotatably held at one end and slidable at the other end, and rotatably engaged with each other at substantially the center. 105 is an arm a1
This is a stand having a center of rotation 03 and a sliding groove for the arm b104. 106 is an arm a103 and an arm b104
And biases the cassette holder 102 from the cassette down position shown in FIG. 5 to the cassette attaching / detaching position direction shown in FIG. Reference numeral 107 denotes a pressing spring having one end fixed to the cassette holder 102.

[0004] The operation of the conventional cassette mounting apparatus configured as described above will be described below. First, in the state shown in FIG. 4, the cassette 101 is inserted into the cassette holder 102 in the direction of arrow A and manually moved to the cassette down position in FIG. In this position, the cassette 101 engages with the positioning pin 110 of the apparatus main body, and the pressing spring 10
At 7, it is pressed in the direction of arrow B and is mounted and fixed at a predetermined position.

[0005]

However, in the above-mentioned conventional configuration, when the cassette 101 is mounted, the pressing spring 1
07 is applied to the cassette holder 102, but when the cassette 101 is not mounted, the reaction force of the pressing spring 107 is not applied to the cassette holder 102.
1, the position of the cassette holder 102 changes. Further, a pair of pressing springs 107 is required to fix the cassette 101 to the apparatus main body at the cassette down position shown in FIG. 5, and a right and left transfer shaft 108 of the cassette holder 102 is required. However, there is a problem that it is disadvantageous for reduction in size and weight. Further, in order to improve the first problem described above, it is necessary to configure a mechanism separate from the cassette holder. For example, in the case of a video movie which is a final product, the number of parts increases and the weight becomes large and heavy. There was a problem that.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a cassette mounting apparatus which can obtain a stable position of a cassette mounting apparatus with a simple configuration regardless of the presence or absence of a cassette.

[0007]

In order to achieve this object, a cassette mounting apparatus according to the present invention comprises a cassette holder for housing a cassette having a magnetic tape housed therein, and a cassette holder rotatably supported by the apparatus body. A cassette holder including a first member, a second member rotatably supported at one end with the first member and engaging the other end with a cam groove provided in the apparatus main body, and an elastic body. While being rotatably connected to the second member and engaging with the cam groove provided in the first member, the elastic member is engaged with the first member and the second member, and the urging force of the elastic member The first member is rotated to move the cassette holder from the first position where recording or reproduction is performed on the magnetic tape to the second position where the cassette can be attached and detached, and the first member resists the urging force of the elastic body. The cassette holder Has a configuration that biases in a direction to press into the apparatus main assembly.

[0008]

With this configuration, the urging force of the elastic body used for moving the cassette holder (cassette) between the first position and the second position is such that the first member is fixed at a predetermined position at the first position. Since the cassette acts on the cassette holder via the second member in the direction of pressing the cassette to the apparatus main body, the cassette can be moved up and down and the cassette can be urged to the apparatus only by this elastic body. The positional relationship of the mounting device does not change, and a stable positional relationship can be obtained. Further, the number of parts can be reduced, and the size and weight can be reduced.

[0009]

【Example】

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

In FIG. 1, reference numeral 1 denotes a cassette, 2 denotes a cassette holder, 3 denotes a top plate, 4 denotes an arm, 5 denotes a stand, and 6 denotes a spiral up spring. The cassette holder 2 is rotatably supported by the arm 4 at the support 2a, and slidably engages with the cam groove 3c of the top plate 3 at the support 2b. The top plate 3 is rotatably supported by a stand 5 about a support 3a. The arm 4 is rotatably supported by the top plate 3 about the support 4a. Is slidably engaged with the sliding groove 5a. The up spring 6 is locked by the top plate 3 and the support portion 3b,
The arm 4 and the support portion 4c are rotatably locked.

The operation of an embodiment of the cassette mounting apparatus constructed as described above will be described with reference to FIGS. 2 and 3 in addition to FIG. First, as shown in FIG.
Into the cassette holder 2 in the direction of arrow A,
When manually pushed from the direction, as shown in FIG. 2, the top plate 3 rotates about the support 3a, the arm 4 rotates about the support 4a disposed at one end thereof, and is disposed at the other end. Since the support portion slides along the support portion sliding groove 5a, the support portion 2a
To move in the direction of arrow B. At this time, since the support portion 2b disposed at the other end of the cassette holder 2 slides along the cam groove 3c of the top plate 3 and moves in the direction of arrow B, the cassette holder 2 moves in parallel in the direction of arrow B. further,
As the top plate 3 is rotated, the cassette 1 is
And is engaged with the positioning pin 7 of the apparatus main body to be mounted at a predetermined position. At this position, the top plate 3 is locked at a predetermined position on the apparatus main body by a lock mechanism (not shown). At this time, arm 4
Is configured to be urged in the direction of arrow C by the up spring 6 around the support portion 4a so that the support portion 4b disposed at the other end of the arm is not restrained by the sliding groove 5a. 2a, the upper portion 2c of the cassette holder 2 comes into contact with the upper surface of the cassette 1,
The cassette 1 is urged in a direction for fixing the cassette 1 to the apparatus main body. When the lock mechanism is released, the top plate 3 rotates in the direction opposite to the arrow D by the urging force of the up spring 6, and its movement moves the cassette holder 2 via the arm 4 in the direction opposite to the arrow B. Then, the cassette returns to the position shown in FIG.

As described above, according to the present embodiment, the movement of the cassette holder 2 is controlled by the rotation of the top plate 3 and the movement of the arm 4.
In this way, the cassette holder 2 can be urged in the direction of fixing the cassette 1 to the apparatus main body by the urging force of the up spring 6 at the cassette down position. Furthermore, by making the up spring 6 spiral, the length of the cassette holder 2 in the longitudinal direction can be shortened, and the size of the apparatus can be reduced.

[0013]

As described above, according to the present invention, the cassette holder is fixed to the apparatus main body at the cassette down position by moving the cassette holder by using the elastic force of the up spring through the rotation of the top plate and the arm. Can be urged by an up-spring in the direction in which the cassette is conventionally pressed to fix the cassette to the apparatus main body.For example, a separate member such as a pressing spring is eliminated, and the conventional cassette holder can be moved right and left. Since the shaft required for the alignment can be eliminated, an excellent cassette mounting device that can reduce the number of parts and the stability of the position of the cassette mounting device and reduce the size and weight can be realized.

[Brief description of the drawings]

FIG. 1 is a side view showing a cassette mounting / dismounting position of a cassette mounting device according to an embodiment of the present invention.

FIG. 2A is a side view showing an operation state of the apparatus, and FIG. 2B is a perspective view showing an operation state of the apparatus.

FIG. 3 (a) is a cutaway side view of a main part showing a cassette down position of the apparatus. FIG. 3 (b) is a cutaway perspective view of a main part showing a cassette down position of the same apparatus.

FIG. 4 is a perspective view showing a cassette mounting position in a conventional cassette mounting apparatus.

FIG. 5 is a sectional view showing a cassette down position in a conventional cassette mounting device.

[Explanation of symbols]

 1 cassette 2 cassette holder 3 top plate 4 arm 5 stand 6 up spring

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideaki Yoshio 1006 Kazuma Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-1-320665 (JP, A) 66947 (JP, U)

Claims (2)

(57) [Claims] A cassette holder accommodating a cassette accommodating a magnetic tape therein; a first member rotatably supported by an apparatus main body; and a first member and one end rotatably supported by the first member. And a second member for engaging the other end with a cam groove provided in the apparatus main body, and a resilient body, and rotatably connecting the cassette holder to the second member and the first member. Also engage with the cam groove provided in the member,
The elastic member is engaged with the first member and the second member, and the biasing force of the elastic member rotates with the first member to record or reproduce the cassette holder on the magnetic tape. Moving the cassette from the first position to the second position where the cassette can be attached and detached and locking the first member to the apparatus main body against the urging force of the elastic body, the cassette holder is moved to the apparatus main body. A cassette mounting device characterized in that it is urged in a direction to press the cassette. 2. The cassette mounting device according to claim 1, wherein the elastic body has a spiral shape.