JPH0611148U - Medium holding mechanism - Google Patents

Abstract

(57) [Summary] (Modified) [Object] To provide a mechanism for securely holding a medium, when the medium is inserted in the medium, such as a magneto-optical disk. [Structure] A hold lever portion 22 rotatable about a stud 31 by a first recovery spring 29 is combined with a lever B26 connected to a magnet 25, and one end of the lever B26 is connected to a second recovery spring 30. In combination with A27, when the medium is inserted, the lever C23 of the hold lever portion 22 is moved in the direction of escaping from the medium 21, the lever D24 enters the concave portion 21B of the medium, and the sensor 32 detects the insertion of the medium to move the magnet 25. Lever B26 that is attracted and combined with a magnet
The upper end of lever A27 combined with is the hold lever part.
The lever D24 holds the medium 21 by entering below 22 to prevent the hold lever portion 22 from moving.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a medium holding mechanism, for example, a mechanism for holding and carrying a disc or the like of a device for reading / writing using a magneto-optical disc or the like as a medium.

[0002]

[Prior art]

 The applicant has developed the medium holding mechanism shown in the front view of FIG. 3 (A) and the side view of FIG. 3 (B). In these figures, 11 is a medium reading / writing device ((hereinafter, 12 is a medium (for example, a magneto-optical disk), 13 is a magnet, 14 is a sensor for detecting the medium insertion, 15 is a lever connected to the magnet 13, and 16 is formed on the medium 12. It is a recess.

When the medium 12 is completely inserted into the device 11, the sensor 14 detects it and turns on the magnet 13 to insert the tip of the lever 15 into the recess 16 of the medium 12 and insert the medium 12 into the device. Hold.

[0004]

[Problems to be solved by the device]

 The force with which the tip of the lever 15 holds the medium 12 is proportional to the force of the magnet 13. Therefore, in order to increase the holding force, the magnet 13 must be upsized. However, it was experienced that the medium holding force at the tip of the lever 15 was weak in the direction of the arrow in FIG. 3 (A), that is, the medium came off when the medium was strongly pulled in the direction of the arrow.

Therefore, an object of the present invention is to provide a medium holding mechanism capable of securing a strong holding force without increasing the size of a magnet in a reading / writing apparatus for a medium such as a magneto-optical disk. There is.

[0006]

[Means for Solving the Problems]

 The medium holding mechanism according to the present invention is movable to the lower side of the hold lever portion, the hold lever portion rotatable about the stud by the first recovery spring, the lever B coupled to the magnet, and the lever B coupled to the lever B. A lever A having a possible one end and the other end connected to a second recovery spring, and a sensor for detecting the insertion of the medium, which holds when the medium is inserted into the medium reading / writing device. The lever C of the lever portion moves away from the medium, and at the same time, the lever D enters the concave portion of the medium, and the sensor that detects the insertion of the medium attracts the magnet to pull in the lever B, and at the same time, the upper end portion of the lever A. Is characterized in that it moves below the hold lever part so that it does not move, whereby the lever D holds the medium.

[0007]

[Action]

 According to the present invention, after the sensor 32 detects that the disk medium 21 is inserted, the lever B26 operated by the magnet 25 allows the hold lever portion 22 to enter the recess 21B of the medium 21 at the same time when the disk medium 21 is inserted. The force of the magnet 25 is no longer proportional to the force for holding the medium, so that the magnet can be made smaller and even if the medium 21 is pulled strongly. It never came off.

[0008]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. The embodiment of the present invention is shown in FIG. 1 in a state where a medium is being inserted and in FIG. 2 after being inserted a medium, in which 21 is a medium, 21A is a medium abutting surface, and 21B is a medium. Concave portion, 22 is a hold lever portion, 23 is a lever C, 24 is a lever D, 25 is a magnet, 26 is a lever B, 27 is a lever A, 28 is a fulcrum of the lever A, 29 is a first restoring spring, and 30 is a first restoring spring. 2 Recovery spring, 31 is a stud, and 32 is a sensor.

In FIG. 1, (A) is a front view, (B) is a side view, and (C) is a sectional view taken along the line CC of FIG. In FIG. 1 (B), the recess 21B of the medium is shown in the position when the medium is completely inserted.

When the medium 21 is inserted in the direction shown by the arrow 1 in FIG. 1C, the stud 31 is used as the center of rotation and is pressed by the first recovery spring 29 in the A direction of FIG. 1B. Press the lever C23 of the hold lever section 22 that is The lever C23 is inclined, and when the medium is further inserted, the lever C23 of the hold lever portion escapes in the B direction in FIG. 1 (C).

Next, referring to FIG. 2, when the medium 21 is inserted up to the abutting surface 21A shown in FIG. 2B, the lever D24 having the stud 31 as the rotation center reaches the position shown in FIG. The disk medium 21 is moved and held. At this position, the sensor 32 for detecting the medium insertion operates to attract the magnet 25, and the force of the magnet 25 acts on the lever A27 via the lever B26. The lever A27 enters the lower side of the hold lever portion 22 around the fulcrum 28 as a rotation center, whereby the hold lever portion 22 cannot move and the holding of the medium is realized.

When the attraction of the magnet 25 is stopped when the medium 21 is taken out, the force of the second recovery spring 30 acts on the lever A27, and the lever A27 is separated from the hold lever portion 22 and returns to the state of FIG. After that, the above process is repeated.

[0013]

[Effect of device]

 As described above, according to the present invention, the lever D24 of the hold lever portion 22 enters the recess 21B of the medium inserted in the apparatus, and at the same time, the magnet 25 moves the lever B26 below the hold lever portion 22. Since the lever D24 of the hold lever portion is held by the force of the first restoring spring, the magnet 25 can be downsized and the lever D24 mechanically enters the concave portion 21B of the medium. Since it is in the above condition, the medium could not be moved manually, and the medium was reliably held in the device.

[Brief description of drawings]

FIG. 1 is a diagram showing a state before inserting a medium according to an embodiment of the present invention,
The figure (A) is a front view, the figure (B) is a side view, and the figure (C) is the same figure.
It is the CC sectional view taken on the line of (A).

FIG. 2 is a diagram showing a state after inserting a medium according to the embodiment of the present invention,
The figure (A) is a front view, the figure (B) is a side view, and the figure (C) is the same figure.
It is the CC sectional view taken on the line of (B).

FIG. 3 is a diagram of a conventional example, in which FIG. 3A is a front view and FIG. 3B is a side view.

[Explanation of symbols]

 11 medium reading / writing device 12 medium 13 magnet 14 sensor 15 lever 16 recess 21 medium 21A medium abutting surface 21B medium recess 22 hold lever 23 lever C 24 lever D 25 magnet 26 lever B 27 lever A 28 fulcrum 29 1st Recovery spring 30 2nd recovery spring 31 Stud 32 Sensor

Claims (1)

[Scope of utility model registration request] 1. A hold lever portion (22) rotatable about a stud (31) by a first recovery spring (29), a lever B (26) connected to a magnet (25), and a lever B ( Lever A (27) connected to 26) and having one end movable to the lower side of the hold lever part (22) and the other end connected to the second recovery spring (30); ) Sensor (32) for detecting the insertion of the medium), and when the medium (21) is inserted into the medium reading / writing device, the lever C (23) of the hold lever portion (22) is in a direction away from the medium (21). The lever D (24) moves to the concave part of the medium.
The sensor (32) which has entered the (21B) and has detected the insertion of the medium attracts the magnet (25) to pull in the lever B (26), and at the same time, the upper end of the lever A (27) is held by the hold lever (2).
A medium holding mechanism characterized in that the lever D (24) holds the medium (21) by moving the lever portion (22) to the bottom so as not to move.