JPH02236863A - Switching mechanism for automatic inserting device of cassette and the like - Google Patents

Abstract

PURPOSE:To stabilize the operation of the switching mechanism of a slot-in mechanism by inserting a cassette to a device, and then always pushing the key top of an insertion detecting switch by a constant quantity by means of spring force. CONSTITUTION:When a cassette 2 is inserted to the device, a parallel part 2b at the tip turns right and left turning members 7 around a rotating shaft 7a, detains a tip 7d on an oblong member 4 slidingly, and a cassette front surface 2c becomes in parallel with the member 4. When the cassette 2 is further inserted, as soon as the cassette 2 abuts on projections 1b on the both side surfaces of a case 1, a roller 8 of the member 7 fits in a recess 2a, and it is held. At such a time, the member 4 clockwise turns by spring 9 force, presses a key top 5a of a detecting switch 5 to the front surface 2c of the cassette, a housing detecting signal is outputted, and a loading operation is executed in a recording or reproducing mode. At such a time, between the members 7 and 4, a gap S is generated, and even when the cassette 2 slightly vibrates, the signal is not inverted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to automatic recording of recording or reproducing media. The present invention relates to a playback starting device, and particularly to a device suitable for use in an optical disc drive device to ensure stable operation of a slot-in mechanism.

[Conventional technology]

The conventional device, as described in Utility Model Application No. 62-186248, has a photo sensor installed between a mechanical guide for inserting a cartridge to accommodate an optical disk and a side arm for holding the inserted cartridge. , the optical path of the photosensor is blocked at the shutter portion at the tip. A photo-shaft that opens and has a roller at the rear, an insert bracket that rotatably supports the center portion of the photo-shaft, and a bracket that is stretched between the photo-shaft and the insert bracket, into which the cartridge is inserted. a spring that rotates the photo-shutter to a position that blocks the optical path of the photo-sensor when the cartridge is not inserted, and presses the roller when the cartridge is inserted to rotate the photo-shutter against the force of the spring. At least at a position that opens the optical path of the photosensor,
The above-mentioned prior art is a mechanism for checking the operation of inserting and removing a cartridge in an optical disc device characterized by having the roller provided therein. Also, since there is no mention of consideration for slight movement of the cassette within the case when insertion is complete, it is necessary to turn on the detection switch for the operation of the slot-in mechanism. There was a problem in stabilizing the OFF state.

An object of the present invention is to provide a slot-in mechanism switch mechanism that operates stably.

[Means to solve the problem]

The above purpose is to install a switch for detecting the insertion of a cassette or disc at one end (part A) of the long piece A, which has a rotating shaft near the center, so that the key top of the switch is on the front side in the direction of cassette insertion. It is fixed and equipped with a spring A so as to rotate around the rotation axis in the direction of the key top.0 It also has a rotation axis on one side, and has a roller or convex shape whose one end (part C) comes into contact with the recesses on both sides of the tip of the cassette. The other end (two parts) of another rotating member B rotates around the rotating shaft with a spring member B, and is fixed to both sides of this cassette or other members and remains stationary. The other end (part 8) of (part A)
The elongated member A is locked by engaging with the long piece member A. Drive or record.
The switch and long piece member A. Rotating member B. Crotch each spring. This is achieved by

[Effect]

When the cassette is inserted again, the rotating member B inserts the (C) parts into the recesses on both sides thereof and rotates.

Due to the rotation of the rotation member B, the elongated member A is unlocked, and the key top of the switch is pressed against the front surface of the cassette Iζ by the spring A.
It remains pressed to the front by the force of.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS. 1 to 7. Reference numeral 01 denotes a case for a cassette 2, which is provided in an opening 3a of a recording or reproducing device 3 as shown in FIG. It is provided with a plate piece 1a extending in the front-rear direction and having a U-shaped cross section leading inward and supporting T.

As shown in Fig. 1.2.5, the cassette 2 is re-inserted into the rear of the case 1, with its central part as the rotating shaft 4a, and one end (A) 4b. It is equipped with a detection switch 5 for the power switch 2 that is in the OFF state, its key top part 5a is fixed in the direction of the front surface of the power switch 2, and another end (mouth) is provided. A long piece member A4 is provided.

In addition, the rear left or right or left and right of the case 1 is the rotation axis 7a.
A rotary member B7 having a roller 8 whose one end ρ-shaped portion 7b comes into contact with a recess 2a provided on the side surface of the cassette after the cassette 28 is inserted, and whose other end (d) portion 7c has a bend 7d.
will be established.

The rotating member B7 is rotated counterclockwise by the force of the spring B10, and the end (d) 7c is brought into contact with the rear wall 1a of the case 1 and locked, and the long piece member A4 is rotated clockwise by the force of the panel A9. No. ζ is rotated, and the end (mouth) is pressed and locked against the bent portion 7d of the end (d) 7c of the rotating member B7.

Insert the cassette 2 into the device 3 having the above configuration through the opening 3a.
When the cassette tip is inserted further, as shown in FIG.
The right-hand member is rotated counterclockwise l to end (c) 7b.
The provided rows 28 are brought into contact and locked, and the long piece member A
6 slides and locks onto the bent portion 7d of the rotating member B7, and becomes parallel to the front surface 2c of the cassette 2.

When the cassette 2 is further pushed in, as shown in FIG. 3, it comes into contact with the protrusions 1b provided on both sides of the case 1, and at the same time the roller 8 of the elongated member B7 comes into contact with the recess 2a of the cassette 2 to hold the cassette 28. .

At this time, the elongated member A4 is rotated clockwise by the force Cζ of the spring A9 and pressed against the key top portion 5a% of the detection switch 5 and the front surface 2c of the cassette, and a signal indicating that the cassette 2 is stored is sent to the control device. The driving motor 6 of the case 1 is supplied with electric power, and the cassette 2 and the cassette 2 are inserted into the device 3 and installed in a recording or reproducing state. (Not shown in the figure from line 20 on the previous page).

In this state, each end 7 of the rotating member B7 is
By changing the distance to b and 7c, the long piece member A4
The end (opening) of the long piece B7 and the bent part 7c7 are the gaps S
It is designed to be able to.

For this reason, the key top 5a of the switch 5 mounted on the long piece member A4 maintains its state even if the cassette 2 moves due to loose vibration etc. due to the force of the front surface 2a4 of the cassette 2 and the spring A9, and does not reverse the signal. [Effects of the Invention] According to the present invention, after the cassette is inserted into the device, the key top of the insertion detection switch can always be pressed by a certain amount, which is a spring force, thereby stabilizing the operation of the slot-in mechanism.

[Brief explanation of drawings]

FIG. 1.2.3 shows one embodiment of the present invention, and A-A in FIG.
4.6.7 is a perspective view of an apparatus including an embodiment of the present invention, and FIG. 5 is a front view thereof. 1...Case 1a...Rear wall 1b of case 1...Protrusions 2 provided on both sides of the inside of the case...
Cassette 2a...Recessed part 2b...Parallel part on both sides of the cassette tip 3...Device 3a...Open groove part 4 of 3...
・Long piece member A 4a...Long piece member rotating shaft 4b・
...One end of 4 (A) 4c...The other end of 4 (B)
Part 5...Key top part 7 of cassette detection switch 5a...5 Rotating member B 7a...Rotating shaft 7b of 7
...One end (C) of 7 7c...Other end (D) of 7 8...Roller 9...Spring A10...
・Spring B Fig. 3

Claims (1)

[Claims] 1. In a device for detecting insertion of a disk or a cassette containing a disk into a case and positioning the case at a predetermined position, a rotation center is located at the center inside the case. Equipped with a mechanical switch at the other end of the clamp, the spring force is always A.
A long piece member A designed to rotate the key top part of the switch forward, one end of which is in contact with one side of a recess provided in the side of the cassette with a protrusion, roller, etc., and the other end of the long piece member A is A switch mechanism for an automatic loading device such as a cassette, characterized in that it is composed of a rotating member B which has a rotating force inwardly due to another spring force B that rotates into contact with a part of a member A. 2. Slightly before the end of the insertion operation of the cassette into the case, the protrusion or roller of the rotating member B contacts the side of the cassette and opens outward, and the long piece A is
When the long piece member A is rotated clockwise or (counterclockwise), the switch is rotated backward, and the cassette is inserted to the end position. The cassette is held in the case by the spring force B when it comes into contact with the recess, and at the same time, the rotating member B rotates inward and comes into contact with the long piece member, and the switch is pushed forward by the spring force A. 2. The device according to claim 1, wherein the key top portion is pressed against the front portion of the cassette, and the switch is reversed to rotate a driving motor and draw the cassette together with the case into the device. 3. When the cassette is inserted to the end position and held, the mechanical switch is provided on the long piece member A and is pressed forward against the front surface of the cassette by a spring force, so there is no possibility of fluctuations such as play or unevenness. 2. The apparatus according to claim 1, wherein even if the cassette moves within a certain amount in the front-back direction due to some factor, the front surface of the cassette and the key top do not play, and the mechanical switch always maintains its state stably.