JP2524838B2 - Tape cassette loading device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette mounting device, and more particularly to a tape cassette mounting device for mounting a tape cassette on a magnetic recording / reproducing device.

2. Description of the Related Art As a conventional tape cassette loading device, for example, there is a device described in Japanese Patent Publication No. 57-58746. The device of this publication generally has a holder into which a tape cassette is inserted,
A leaf spring that presses and holds the tape cassette in the holder, a pantograph mechanism that movably supports the holder between the cassette insertion position and the cassette mounting position, and a holder that moves the pantograph mechanism to the cassette insertion position via a lever It consists of a coil spring for urging. Therefore, in the conventional device, when the tape cassette is mounted on the tape recorder as a magnetic recording / reproducing device, the pantograph mechanism moves the holder to the mounting position by inserting the tape cassette into the holder and manually moving the holder to the mounting position. It is folded against the force and the holder is locked at the cassette mounting position.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the conventional device, when the tape cassette is mounted, the holder is pressed against the coil spring that biases the pantograph mechanism, and finally the coil spring and the tape cassette are pressed and held in the holder. Since the holder is pressed against the resultant force with the spring force of the leaf spring, there is a problem that the movement of the holder becomes heavy immediately before the holder reaches the mounting position and the feeling during operation is poor. Further, since the conventional apparatus has the coil spring and the leaf spring, there is a problem that the number of parts is large and the assembling work is troublesome.

Further, in a tape cassette, static electricity of several tens to tens of thousands of V is generated during the winding and rewinding operations of the tape, for example, due to the contact between the tape and the sliding sheet in the cassette half, the contact between the tape and the cassette half, friction and peeling. To do. Therefore, some cassette halves (housings) of tape cassettes are molded with synthetic resin and antistatic treatment is added by adding a conductive additive for antistatic treatment. The specific resistance is not very low. Therefore, in the conventional device in which the leaf spring presses the tape cassette, since the leaf spring is a point contact or a line contact with a small contact area, it is not possible to release the static electricity generated momentarily as the tape runs, and the tape cassette is charged by the electrification of the tape cassette. Dust is likely to adhere to the tape, which causes a dropout of the reproduction signal and scratches due to the dust on the tape, which causes dropout of the reproduction signal again.

Therefore, an object of the present invention is to provide a tape cassette mounting device that solves the above problems.

Means for Solving the Problems (1) According to the present invention, a holder provided so as to be movable between a cassette insertion position where a tape cassette is inserted and a cassette mounting position where the inserted tape cassette is mounted. , A cassette pressing member that is rotatably provided on the holder and has a contact portion that contacts the tape cassette when the holder is at the cassette mounting position, and a cassette pressing member that contacts the cassette pressing member when the holder reaches the cassette insertion position. A restricting member that restricts the rotation of the cassette pressing member so that the contact portion separates from the tape cassette with the movement, and the cassette pressing member that presses the contact portion so that the contact portion contacts the tape cassette. And a biasing member for biasing the holder to the cassette insertion position.

(2) In the present invention, a conductive elastic material having high conductivity and elasticity is provided so as to contact a contact portion of the cassette pressing member over a wide area of the tape cassette.

Action (1) By the urging force of the urging member that urges the cassette pressing member, the contact portion of the cassette pressing member presses the tape cassette when the holder is at the cassette mounting position, and when the holder reaches the cassette insertion position, Since the contact portion is separated from the tape cassette and the biasing force of the biasing member acts on the holder in the direction of moving to the cassette insertion position, the structure is simplified.

(2) The conductive elastic material provided at the abutting portion of the cassette pressing member abuts the surface of the tape cassette over a wide area to release static electricity charged in the tape cassette and prevent dust from adhering to the tape.

Embodiment FIG. 1 to FIG. 4 show an embodiment of the tape cassette loading device according to the present invention.

In each drawing, the tape cassette mounting mechanism 1 has a holder 3 into which the tape cassette 2 is inserted. The holder 3 includes a frame 4 formed on a sheet metal, tape cassette holding members 5a and 5b screwed to the front surface of the frame 4, and the tape cassette 2 when the holder 4 is at the cassette mounting position shown in FIG. And a cassette pressing member 6 for pressing.

The lower ends of the arms 4a and 4b of the frame 4 are supported by shafts 7a and 8a which are pivotally supported by brackets 7 and 8 on both sides, and the cassette mounting position (shown in FIG. 1) is centered around the shafts 7a and 8a. )
And a cassette insertion position (shown in FIG. 6) in which the cassette 2 is inserted are rotationally displaced. As will be described later, the brackets 7 and 8 have projecting pieces 7b and 8b as restricting members that come into contact with the cassette pressing member 6 and restrict the rotation when the holder 3 is rotated to the cassette insertion position. Tape cassette holding member 5a that is fixed to both sides of the frame 4, 5b are each U-shaped has a bent retention section 5 _a1, 5 _b1, the tape cassette 2 the holding portion 5 _a1 both sides, 5 It is inserted into _b1 and held in the holder 4.

The cassette pressing member 6 has arms 6a and 6b on both sides of the shaft 6c,
It is supported by 6d and is rotatably attached to the arms 4a and 4b of the frame 4. A conductive elastic material 9 that abuts on the tape cassette 2 is attached to a horizontal bridge portion 6e that horizontally bridges between the arms 6a and 6b of the cassette pressing member 6. The electrically conductive elastic material 9 is subjected to anti-electricity treatment, has a small surface resistance of 0.3 Ω / cm, has high electrical conductivity, and has elasticity. Further, since the conductive elastic member 9 is provided in the entire width of the laterally extending portion 6e, it abuts in a wide area of the tape cassette 2. Therefore, as will be described later, it is possible to easily remove static electricity generated by the tape winding and rewinding operations when the tape cassette is mounted.

Shafts 7a, 8 that rotatably support the holder 3 having the above configuration
Torsion springs (energizing members) 10 and 11 are wound around a. One ends 10a, 11a of the torsion springs 10, 11 are hook portions _6a1 , 6 projecting laterally from the arms 6a, 6b of the cassette pressing member 6.
The other ends 10b and 11b of the torsion springs 10 and 11 which are hooked by _b1 project forward from the rear bracket 12 shown in FIG.
12a, 12b (however, only one hooking portion 12a is shown in FIG. 1).

Therefore, the holder 3 is biased by the pressing force of the torsion springs 10 and 11 via the cassette pressing member 6 so as to rotate to the cassette insertion position. In addition, the torsion spring 10,1
As will be described later, the cassette pressing member 6 on which the spring force of 1 acts, the shafts 6c, 6d, while the holder reaches the cassette mounting position.
Is pressed in the clockwise direction, and the conductive elastic material 9 is pressed against the front surface of the tape cassette 2 to hold the tape cassette 2.

13 and 14 are hooks, which are shafts 15 protruding from the brackets 15 and 16.
It is rotatably supported by a and 16a, and is urged clockwise by a spring force of a coil spring (not shown) or the like in FIG. The hooks 13 and 14 have claw portions 13a and 13b that engage with the projecting pins 4c and 4d that project laterally from the arm portions 4a and 4b of the frame 4, and project when the holder 3 is in the cassette mounting position. The holder 3 is locked by engaging the pins 4c and 4d.

The operation of the tape cassette loading device 1 having the above configuration will be described.

When mounting the tape cassette 2 on a tape recorder (not shown), first, an eject button (not shown) is pressed to rotate the hooks 13 and 14 counterclockwise. This allows
The holder 3 moves the shafts 7a and 8a by the spring force of the torsion springs 10 and 11.
Around the arrow in the direction of arrow A.

As shown in FIG. 5, while the holder 3 is rotating in the direction of arrow A, the tips of the arms 6a and 6b of the cassette pressing member 6 come into contact with the protruding pieces 7b and 8b of the brackets 7 and 8. Therefore, the holder 4 rotates in the arrow A direction and the cassette pressing member 6
As shown in FIG. 6, the rotation position is restricted by the projecting pieces 7b and 8b, and the rotation is relatively counterclockwise with respect to the frame 4 about the shafts 6c and 6d. Therefore, when the holder 4 reaches the cassette insertion position shown in FIG. 6, the conductive elastic material 9 escapes to the front to allow the insertion of the tape cassette 2.

Here, in FIG. 6, the tape cassette 2 is inserted into the tape cassette holding members 5a and 5b of the holder 3 from the direction of arrow C. Next, when the holder 3 is pressed in the direction of the arrow B against the spring force of the torsion springs 10 and 11, the holder 3 performs an operation opposite to the above operation. That is, the holder 3 has an arrow B
In the process of rotating in the direction to reach the cassette mounting position, the tips of the arms 6a, 6b of the cassette pressing member 6 are separated from the protruding pieces 7b, 8b of the brackets 7, 8. At the same time, the cassette pressing member 6
Is rotated clockwise about the shafts 6c and 6d by the springs of the torsion springs 10 and 11. Therefore, the conductive elastic member 9 provided on the cassette pressing member 6 contacts the tape cassette 2 in the holder 3 by the above operation and presses the front surface of the tape cassette 2. And the holder 3 is the protruding pin 4 of the frame 4.
The c and 4d are hooked on the claw portions 13a and 14a of the hooks 13 and 14 and locked at the cassette mounting position.

In this way, the torsion springs 10 and 11 urge the holder 3 in the direction of arrow A (cassette insertion position), and in the process of the holder 3 rotating in the direction of arrow B to reach the cassette mounting position, the cassette pressing member 6 is used. And presses the tape cassette 2.

Therefore, since the torsion springs 10 and 11 respectively perform the above-mentioned two actions, the number of parts is smaller than that of the conventional device in which the spring is provided for each operation, and the assembling work can be easily performed.

When the holder 3 is rotated in the direction of the arrow B, the elastic force of the torsion springs 10 and 11 serves only as resistance, and the conductive elastic material 9 has elasticity, so that the tape cassette 2 can be mounted as in the conventional case. Since there is no leaf spring to hold, the holder 3 can be moved with a lighter operating force than the conventional device.

When the tape cassette 2 reaches the cassette mounting position together with the holder 3, the wide conductive elastic material 9 comes into contact with the front surface of the tape cassette 2 over a wide area and adheres to the tape cassette 2 by its elasticity. Therefore, static electricity generated during the winding and rewinding operation of the tape flows to the ground side through the contact surface of the conductive elastic material 9 having a small surface resistance, the cassette pressing member 6, the frame 4, the brackets 7, 8 and the like. . Therefore, the static electricity charged in the tape cassette 2 can be completely removed, and dust can be prevented from adhering to the tape. As a result, it is possible to prevent the reproduction signal dropout due to the dust adhering to the tape and the scratches due to the dust from being stuck to the tape, which again causes the reproduction signal dropout to occur.

When ejecting the loaded tape cassette 2, the eject button (not shown) is operated to rotate the hooks 13 and 14 counterclockwise to unlock the holder 3 as in the case of inserting the tape cassette. To do. As a result, the holder 3 rotates to the cassette insertion position (in the direction of arrow A) where the tape cassette 2 can be ejected as described above.

Although the tape cassette 2 is mounted in an upright state in the above embodiment, it is needless to say that it is not limited to this.

As described above, in the tape cassette mounting apparatus according to the present invention, according to claim (1), the biasing member presses the cassette pressing member so that the contact portion contacts the tape cassette, and the cassette pressing member is pressed. Since the holder urges the cassette insertion position through the member, it is not necessary to separately provide a spring for the holder and a spring for pressing the tape cassette unlike the conventional device, and the number of partial parts is reduced. The simplification can be achieved, the assembling work can be easily performed, and the working time in the assembling process can be further shortened to improve the production efficiency. In addition, a small operation force is required when returning the holder to the cassette mounting position, and the operation can be performed in a comfortable state.

Further, according to claim (2), the conductive elastic material having a small surface resistance is brought into close contact with the surface of the tape cassette in a wide area by the pressing force of the urging member, so that the tape is wound and rewound. It is possible to completely remove the static electricity that is generated, to prevent dust from adhering to the tape, and to prevent playback signal dropout and scratches due to dust from sticking to the tape, which in turn causes playback signal dropout. It has features such as prevention.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of a tape cassette mounting apparatus according to the present invention, FIGS. 2 to 4 are front views, plan views, exploded perspective views, and FIG. 5 of the tape cassette mounting apparatus, respectively. FIG. 6 is a side sectional view showing a state where the cassette pressing member abuts on the protruding piece during the movement of FIG. 6, and FIG. 6 is a side sectional view showing a state when the cassette pressing member moves to the holder cassette insertion position. 1 ... Tape cassette mounting device, 2 ... Tape cassette, 3 ... Holder, 4 ... Frame, 4c, 4d ... Projection pin, 6 ... Cassette pressing member, 7, 8 ... Bracket, 7b,
8b: protruding piece, 9: conductive elastic material, 10,11: torsion spring, 13,14: hook.

Claims (2)

(57) [Claims] 1. A holder provided so as to be movable between a cassette insertion position where a tape cassette is inserted and a cassette installation position where the inserted tape cassette is installed, and a holder rotatably provided on the holder. A cassette pressing member having an abutting portion that abuts the tape cassette when the holder is in the cassette mounting position; and a cassette abutting member that abuts the cassette pressing member when the holder reaches the cassette insertion position, and moves as the holder moves. A restricting member that restricts the rotation of the cassette pressing member so that the contact portion is separated from the tape cassette; and the cassette pressing member that presses the contact portion so that the contact portion contacts the tape cassette. And a biasing member that biases the holder to a cassette insertion position via a member. Cassette loading device. 2. A conductive elastic material having high conductivity and elasticity is provided so as to abut a wide area of the tape cassette on the abutting portion of the cassette pressing member. Tape cassette loading device.