JPH0355159Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a cassette guiding and mounting device used in a magnetic recording/reproducing device.

BACKGROUND ART A conventional cassette guide and mounting device is disclosed in, for example, Japanese Patent Application Laid-open No. 119965/1983. FIG. 8 shows a schematic plan view of this conventional cassette mounting device. The conventional configuration will be explained below based on FIG.

Support shafts 3 and 3' are embedded in the bottom plate 2 of the cassette holder 1. Further, the rotating members 5 and 5' are provided with rotatably supported positioning rollers 6 and 6', respectively. A connecting rod 7 is rotatably supported by shafts 8 and 8' provided on the rotating members 5 and 5', respectively. The rotating member 5' is biased counterclockwise by a tension spring 9. Further, the bottom plate 2 is provided with openings 10 and 11 through which the reel shaft is inserted.

Next, the operation of the conventional example will be explained. Now, considering the case where a tape cassette is inserted which is larger than the spacing between the positioning rollers 6, 6' shown in FIG. 8, the positioning rollers 6, 6' will move away from each other. That is, the rotating members 5 and 5' rotate counterclockwise and clockwise, respectively, about the fulcrum shafts 3 and 3'. At this time, the positioning roller 6,
The amount of movement of the positioning roller 6' is determined by the positional relationship between the fulcrum shafts 3, 3' and the shafts 8, 8', and in FIG. 8, the amount of movement of the positioning roller 6' is larger. position of the cassette.

Problems to be Solved by the Invention However, with the above configuration, it is difficult to guide and position a plurality of tape cassettes of different sizes to symmetrical positions because the amount of movement of the positioning rollers 6, 6' is different. It was hot. This is due to the fact that the above configuration cannot set the positional relationship between the fulcrum shafts 3, 3' and the shafts 8, 8' so that the positioning rollers 6, 6' can always move symmetrically.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cassette guiding and mounting device that can position and guide symmetrically a plurality of types of tape cassettes having different sizes.

Means for Solving the Problems The present invention is a cassette guide device in which a pair of left and right cassette guide members can be moved symmetrically via a rotational transmission body.

Function The pair of left and right cassette guide members are connected via a rotating transmission body such as a gear.
It moves smoothly and symmetrically for cassettes of different sizes, and guides and positions the cassettes easily and reliably.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. In FIGS. 1-3, cassette guide members 15 and 15' are fixed on moving plates 16 and 16', respectively. Further, a pin 18 is implanted in the upper surface 17a of the housing 17, and a rotation transmission body 19 such as a gear (hereinafter referred to as a gear in the text) is rotatably attached to the pin 18. The gear 19 is prevented from moving upward by the stop 20. The movable plate 16 has a substantially rectangular hole 2 provided in the side surface 17b and the side surface 17c of the housing 17.
1 and 21', and is movable in the left and right direction. Similarly, the movable plate 16' is also
It is guided by substantially rectangular holes 22 and 22' provided in the side surface 17b and the side surface 17c, and is movable in the left-right direction. Also moving plates 16 and 16'
have rack parts 23 and 2 that mesh with the gear 19.
3' (FIG. 4) are formed respectively. Furthermore, a tension spring 25 is mounted on the pin 18 and the pin 24 implanted in the cassette guide member 15, and applies an inward biasing force to the cassette guide members 15 and 15'. Stopper pins 26 and 27 are fixed to the movable plates 16 and 16', respectively. or,
The cassette guide member 15 has a cassette pressing member 2.
8 is fixed with screws 29. This cassette pressing member 28 has a spherical body 32 arranged in a recess 31 of a substantially L-shaped elastic member 30, and presses the spherical body 32 rotatably with an elastic piece 34 fixed to the elastic member 30 with a caulking pin 33. holds (7th
figure).

Similarly, a cassette pressing member 28' is fixed to the cassette guide member 15' with a screw 29'. The housing 17 is provided with an intermediate plate 35 to facilitate insertion of the cassette. Further, the bottom plate 36 is provided with approximately elliptical openings 37 and 38 through which the supply and take-up reel shafts (not shown) are inserted, and the bottom plate 36 is further provided with raised portions 39 and 4.
0 is provided to adjust the position in the forward direction when inserting the cassette.

The cassette guide members 15 and 15' have sloped portions 15a and 15a for facilitating the reception of cassettes.
15'a, and straight portions 15b and 15'b for finally holding the side surfaces of the cassette (FIG. 4).

Next, based on FIG. 6, a cassette applied to the present cassette guide and mounting device will be explained. The solid line indicates the small cassette 41, inside which are the supply reels 42,
and a take-up reel 43. The dashed line indicates a large cassette 44, which contains a supply reel 45 and a take-up reel 46.

It goes without saying that several cassettes having dimensions between the small cassette 41 and the large cassette 44 are applicable.

Additionally, as the cassette increases in size, the center positions of its supply and take-up reels move outward in a generally symmetrical manner.

Further, although not shown in the main text, the present cassette guide and mounting device is supported so as to be movable up and down at the cassette mounting position, as is conventionally known. The cassette guiding and mounting device is normally supported in a raised position and moves downward after the tape cassette is inserted, thereby mounting the tape cassette in a predetermined position.

The operation of the cassette guide and mounting device of this embodiment constructed as described above will be explained below.

The initial state of the cassette guide members 15, 15' is as follows:
The distance between the straight portions 15b and 15'b is set to be approximately equal to the width W _S of the small cassette 41, and the stopper pin 26 prevents the cassette guide members 15 and 15 from moving inward. There is. Therefore, when the small cassette 41 is inserted from the direction of arrow A (FIG. 4), the small cassette 41 is moved left and right by the straight portions 15b and 15'b of the cassette guide members 15, 15', as in a normal cassette insertion operation. Insertion in the direction will be guided. The forward movement is regulated by the cut-and-raised parts 39 and 40, and the small cassette 41 is pushed downwardly by the cassette pressing members 28 and 28', so that the small cassette 41 is moved inside the housing 17. Guided positioning is ensured in a predetermined position. Therefore, when the small cassette 41 is inserted, the cassette guide members 15 and 15' hardly move.

Next, the insertion operation of the large cassette 44 having the width Wl will be described (FIGS. 4 and 5). When the large cassette 44 is now inserted from the direction of arrow A, the tip of the large cassette 44 is inserted into the cassette guide members 15, 15'.
abuts on the respective inclined portions 15a and 15'a. When the large cassette 44 is further inserted, the cassette guide member 15 moves to the right and the cassette guide member 1
5' will each receive a force in the leftward direction. As a result, the movable plate 19 moves to the right against the force of the tension spring 25, and at the same time, the gear 19 receives a counterclockwise rotational force due to engagement with the rack portion 23, and the movable plate 16' moves to the left. In other words, the cassette guide member 15' moves to the left. As can be understood from this, the pair of left and right cassette guide members 15 and 15' can be moved symmetrically by the same amount via the rotation transmission body (gear) 19. When the large cassette 44 is further inserted, the cassette guide members 15 and 15'
It moves outward until the distance between the straight portions 15b and 15b' becomes approximately equal to the width Wl of the large cassette 44. After that, the side of the large cassette 44 is
It is guided by the straight line portions 15b and 15b' and moves until it comes into contact with the cut and raised portions 39 and 40 in front. At this time, the force of the tension spring 25 acts on the cassette guide members 15 and 15' so as to move them inwardly to grip the large cassette 44, so that it can be reliably guided and positioned in the left-right direction. Furthermore, when the large cassette 44 is inserted, the cassette pressing member 28 and then the cassette pressing member 28' act to urge the large cassette 44 downward as the respective spherical bodies 32 contact and rotate. .

Finally, in the state shown in FIG. 5, the guiding and reliable positioning operations accompanying the insertion of the large cassette 44 are completed. At this time, the stopper pin 27 acts to prevent the movable plates 16 and 16' from moving more than the required amount.

As described above, this embodiment provides an extremely simple cassette guide/mounting device that can guide and position a plurality of types of cassettes having different sizes to symmetrical positions as appropriate.

In this embodiment, this operation is performed using the small cassette 4.
1 and the large cassette 44, it goes without saying that cassettes having sizes intermediate between these cassettes operate in exactly the same way.

Effects of the Invention According to the present invention, a plurality of types of cassettes having different sizes can be guided symmetrically and positioned reliably during insertion, and the practical effects thereof are extremely large.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a cassette guide and mounting device showing an embodiment of the present invention, Fig. 2 is a partially cutaway plan view of the same embodiment, and Fig. 3 is a front view of the same embodiment. 4 is a plan view of the same embodiment with the top surface of the casing and the intermediate plate removed, and FIG. 5 is a plan view of the same embodiment in an operating state with the top surface of the casing and the intermediate plate removed. , FIG. 6 is an explanatory diagram of a cassette applied to the present device, FIG. 7 is a sectional view taken along line B-B' in FIG. 5, and FIG. 8 is a schematic plan view of a conventional device. 15, 15'...Cassette guide member, 15a,
15a'... Slope portion, 15b, 15b'... Straight portion, 16, 16'... Moving plate, 17... Housing, 1
9...Rotary transmission body (gear), 23, 23'...Rack portion, 25...Tension spring, 28...Cassette pressing member.

Claims (1)

[Claims for Utility Model Registration] (1) A pair of left and right cassette guide members 15, 15' for guiding the insertion of a tape cassette, and a pair of cassette guide members 15, 15' that are integrally provided and are movable left and right. A pair of moving plates 16,1
6', a rotary transmission body 19 located between the movable plates 16, 16' and engaged with the movable plates 16, 16', and the cassette guide members 15, 1.
Tension spring 2 that always urges 5' inward
A cassette guide and mounting device comprising 6. (2) Slanted portions 15 facing outward are provided at approximately the tips of the pair of left and right cassette guide members 15, 15'.
a, 15a', and the cassette guide members 15, 15' further have straight portions 15b, 15b' for finally holding the side surfaces of the cassette. Mounting device.