JPH0453058A - Cassette loader - Google Patents

Abstract

PURPOSE:To diminish a moving amt. of a cassette holder in a horizontal direction at the time of its ejection and to contrive miniaturization of the subject device by making a distance from a turning center of an ejection means to a pushing part larger than a distance from the above center to a position where an engagement pat provided to the holder and an engagement means are brought into contact with each other. CONSTITUTION:At the time of ejecting a cassette, the engagement part 6c is engaged with the engagement means 5 in the opposite direction to the case of inserting the cassette in accordance with the movement in the direction of ejecting the cassette holder 6, and the engagement means and the ejection means 1 are turned in the ejecting direction as they are under their engagement relationship. Then, the pushing part 4 of the ejection means is brought into contact with a tip part of the cassette 7 so that the cassette is pushed out. When the movement is further carried out, the engagement means and the engagement part are released from their engagement and restored to their prescribed positions respectively. When the distance from a turning center hole 1a to the pushing part 4 is denoted as (e), and the distance from the said hole to the engagement position of the engagement means with the engagement part is (f), while the holder moving amt. (h) and the cassette moving amt. (g), if (e) > (f), (g) > (h), that is, the holder moving amt. is magnified and transmitted to the cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a digital audio tape recorder (
DAT) cassettes and video tape recorders (VAR).
) cassette etc., which is suitable for the front-loading method for loading the recording/playback device into the recording/playback device 6 (Prior art) In recent years, various products using VTR cassettes and DAT cassettes have been actively developed. It is expected to be used not only for stationary use but also for in-vehicle and portable use. In particular, in the case of DAT, its use as a computer peripheral device for information recording, so-called data streamers, is also being considered because of its essence of recording digital signals.

Incidentally, these in-vehicle devices and data streamers are required to be miniaturized. Furthermore, in either case, a so-called front loading method, in which the cassette is inserted from the front of the device, is used as a device for mounting the cassette into the device.

Hereinafter, a conventional front-loading mounting device used for mounting a DAT cassette into a recording/reproducing device will be described.

FIG. 9 is a top plan view of a conventional front-loading mounting device, FIG. 10 is a side view of the device, and FIG. 11 is an enlarged view of the main parts of the device.

As a conventional example of the above-mentioned method, for example,
It is described in Publication No. 152, etc. In the figure, reference numeral 11 denotes a cassette holder that removably holds the cassette 12, and a plurality of guide bins lla planted on both sides penetrate the side plate 13 and engage with the guide groove 14a provided in the movable body 4. are doing. When the moving body 4 is reciprocated in the horizontal direction by a drive device such as a motor (not shown), the cassette holder 11 is reciprocated up and down between the cassette insertion position and the cassette mounting position via the guide bin 11a. Moving. Further, one lever end 15a of the lever 15 is engaged with a protrusion 14b provided on the movable body 14, and the lever 15
rotates around the support shaft 16 as the movable body 14 reciprocates. When inserting the cassette, the connecting pin 15b set on the lever 15 engages with the connecting hole 17a provided on the actuating body 17, and the claw portion provided on the actuating body 17 engages with the engaged portion provided on the upper surface of the cassette. 12a, and as the lever 15 rotates, the cassette 12 is pulled in the cassette insertion direction. When the cassette is ejected, the ejection bin 18 mounted on the lever 15 comes into contact with the cassette tip 12b, so that the cassette 12 is pushed out in the cassette ejection direction.

(Problem to be Solved by the Invention) However, in the conventional configuration described above, as shown in FIG. 11, in order to move the cassette 12 by C, it is necessary to move the lever end 15a by d. . In other words, the distance from the position of the support shaft 16 to the connecting bottle 15b is a, and the distance from the position of the support shaft 16 to the lever end 1
If the distance to 58 is b, as is clear from the figure, b
> a, so d > e.

Therefore, the lever end 15a must be moved by a greater amount than the cassette 12 is moved.

In other words, the movable body 14 has to be moved a lot, which has the disadvantage that the external dimensions of the cassette mounting device ultimately become large.

Furthermore, it is necessary to provide a movable body 14 for the rotational movement of the lever 15 and the reciprocating movement of the cassette holder 11, which has disadvantages such as a complicated structure and a large number of parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cassette mounting device that eliminates the above-mentioned drawbacks, reduces the amount of movement of the cassette holder in the cassette insertion direction, downsizes the device, and reduces the number of component parts. do.

(Means for Solving the Problems) A cassette loading device of the present invention removably holds a cassette containing a tape, and reciprocates between a cassette insertion position where the cassette is inserted and a cassette loading position where recording and playback are performed. A movable cassette holder, a side plate having a guide groove for guiding the cassette holder, an ejection means rotatably supported by a support shaft mounted on the side plate, and an extrusion provided on the ejection means. and an engaging part provided on the cassette holder, which engages with the engaging part and is also engaged with the ejecting means so as to be rotatable within a predetermined range during the reciprocating movement of the cassette holder. a first urging means for urging the ejection means in the cassette insertion direction; and a second urging means for urging the engagement means in the cassette ejection direction; As the cassette holder moves horizontally in the cassette ejection direction, the cassette is moved horizontally via the ejection member by an amount greater than the amount of movement of the cassette holder.

(Function) By configuring the cassette loading device as described above,
The distance from the center of rotation of the ejection means to the position where the engaging part and the retaining means provided on the cassette holder come into contact is shorter than the distance from the center of rotation of the ejection means to the push-out part. The amount of movement of the cassette holder is magnified and transmitted to the cassette. That is, it is possible to reduce the amount of movement of the cassette holder in the horizontal direction.

(Embodiment) Hereinafter, one embodiment of the cassette mounting device of the present invention will be described using the drawings.

1, 2, 3 and 4 are plan views of the cassette loading device of the present invention, FIGS. 5 and 6 are side views of the device, and FIGS. 7 and 8 are main parts. It is an enlarged view.

In the figure, the ejection means 1 has a rotation center hole 1a provided at one end.
is held rotatably around the support member 3 by engaging with the support member 3 set up on the side plate 2, and furthermore, an extrusion portion 4 is provided at the other end. 5 is provided in the ejection means so that the rotation hole 5a rotatably engages with the support member 3, and rotates independently in the cassette insertion direction, and rotates together with the ejection means l in the cassette ejection direction. Notch 1b
The contact portion 5b is an engaging means in which the contact portion 5b is in an engaging relationship.

Reference numeral 6 denotes a cassette holder that removably holds the cassette 7, and a plurality of guide pins 6b are installed on both side walls 6a of the cassette holder, and the guide pins 6b are inserted into the guide grooves 2a provided in the side plate 2.
is slidably engaged with. Furthermore, the engagement means 5 is provided on the upper surface.
An engaging portion 6c that engages with is provided. Reference numeral 8 denotes a first urging means, one end of which is fixed to the ejection means 1 and the other end fixed to the side plate 2, and constantly urges the ejection means 1 in the cassette insertion direction. Reference numeral 9 denotes a second urging means, one end of which is fixed to the ejection means 1 and the other end fixed to the engagement means 5, thereby constantly urging the engagement means 5 in the cassette ejection direction. 10 is a device board.

The operation of the cassette loading device constructed as described above will be described below with reference to FIGS. 1 to 8.

When the cassette holder 6 is moved from the cassette insertion position to the cassette mounting position by a drive device such as a motor (not shown), it first moves horizontally from the cassette insertion position to a predetermined position, and then vertically lowers to insert the cassette. Reach the mounting position. Further, when ejecting the cassette, the cassette holder 6 moves through the reverse path.

The engaging portion 6c provided on the cassette holder 6 engages with the engaging means 5 while the cassette holder 6 is horizontally moving in the cassette insertion direction. By further horizontal movement from this point, the engaging means 5 rotates in the cassette insertion direction as shown in FIG. Thereafter, as the cassette holder 6 descends vertically, the engagement state between the engagement means 5 and the engagement portion 6C is released, and the engagement means 5 is moved by the second biasing means 9 as shown in FIG. Return to the designated position. Conversely, when ejecting the cassette, the engaging portion 6c engages with the engaging means 5 again from the direction opposite to the direction in which the cassette was inserted during the horizontal movement of the cassette holder 6 in the cassette ejecting direction. At this time, as shown in FIG. 7, the contact portion 5b provided on the engagement means 5 and the notch portion 1b provided on the ejection means 1 are engaged, so that the engagement occurs as shown in FIG. The means 5 and the ejecting means 1 rotate together in the cassette ejecting direction while maintaining the engaged relationship. By doing so, the push-out section 4 provided in the ejection means 1 comes into contact with the tip of the cassette 7 and pushes out the cassette 7 in the cassette ejection direction. Furthermore, as the cassette holder 6 moves horizontally in the cassette ejection direction, the engaging means 5
The engaged state of the engaging portion 6c is released, and the ejecting means 1 and the engaging means 5 are returned to their predetermined positions by the first biasing means 8.

Next, the relationship between the amount of movement of the cassette holder 6 and the amount of movement of the cassette 7 will be explained using FIG.

The distance from the rotation center hole 1a to the push-out part 4 is e, the distance &f from the rotation center hole 1a to the engagement position between the engagement means 5 and the engagement section 6c, and the rotation of the ejection means 1 and the engagement means 5. The corner is i,
Assuming that the amount of movement of the cassette holder 6 is h and the amount of movement of the cassette 7 is g, as is clear from the figure, when a>f, g>h. In other words, by setting f larger than e, the amount of movement of the cassette holder 6 is expanded and the cassette 7 is
can be conveyed to.

Note that it is also possible to expand the movement amount to an arbitrary amount by appropriately selecting e and f.

(Effects of the Invention) In the cassette mounting device according to the present invention, the distance between the rotation center hole and the push-out portion is set larger than the distance from the rotation center hole to the engagement position between the engagement means and the engagement portion. The amount of movement of the cassette holder can be expanded and transmitted to the cassette. In other words, the amount of horizontal movement of the cassette holder can be reduced, and the product can be made smaller.

Further, since the ejection means and the engagement means are engaged, and the engagement means and the engagement portion provided on the cassette holder are engaged,
The ejection means rotates in the cassette ejection direction as the cassette holder moves in the cassette ejection direction. therefore,
This has great practical effects, such as eliminating the need for parts such as a moving body for moving the ejection means, reducing the number of parts, and reducing cost.

[Brief explanation of drawings]

1, 2, 3, and 4 are plan views of a cassette loading device according to an embodiment of the present invention, and FIG. 5 and FIG. 61i!
7 and 8 are enlarged views of essential parts for explaining the operation of the conventional cassette loading device, and FIG. 9 is a plan view for explaining the operation of the conventional cassette loading device. FIG. 10 is a side view of the same, and FIG. 11 is an enlarged view of the same essential parts. 1... Discharge means, 1a... Rotation center hole, 1b...
- Notch part, 2... Side plate, 2a... Guide groove, 3... Support member, 4... Extrusion part, 5.
...Engagement means, 5a... Rotation hole, 5b... Contact portion, 6... Cassette holder. 6a...Side wall, 6h...Guide bin, 6c
...Engaging portion, 7...Cassette, 8...First biasing means, 9...Second biasing means, 10...Device board. Patent applicant Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Scope of Claims] A cassette holder that removably holds a cassette containing a tape and is movable back and forth between a cassette insertion position where the cassette is inserted and a cassette installation position where recording and playback are performed, the cassette holder being supported. One end is rotatably supported by a side plate, an engaging portion provided on the cassette holder, and a support member provided on the side plate, and the other end comes into contact with the cassette by rotating around the support member. an ejecting means configured to be in contact with each other; and an ejecting means rotatably supported by the supporting member, which engages with the engaging portion when the cassette is inserted, but does not engage with the ejecting means, and when the cassette is ejected, the engaging portion engages with the engaging portion. an engaging means configured to engage with the ejecting means at the same time as the ejecting means, and the ejecting means is configured to push out the cassette in a cassette ejecting direction by a movement amount greater than the amount of movement of the cassette holder; A cassette mounting device comprising: a first biasing device that biases the device in the cassette insertion direction; and a second biasing device that biases the engagement device in the cassette ejection direction.