JPH07122945B2 - Tape guide device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape guide position for drawing a tape from a tape cassette such as a video or audio tape recorder to a predetermined position.

[Conventional technology]

Generally, for example, recording and reproduction in a video tape recorder is performed by pulling out a magnetic tape from a tape cassette and arranging the tape on a predetermined traveling path via a recording / reproducing head, and then running the tape at a predetermined speed. Done.

Generally, at least two tape moving posts are used as a means for pulling a tape out of a tape cassette and positioning it on a predetermined traveling path. This tape moving post is provided with a roller portion that abuts against a part of the tape from the inside thereof, and a part of the moving block that separately supports these roller portions is slidably engaged with a long guide hole formed in the chassis. The moving block is configured to pull out a part of the tape outward by moving along the guide elongated hole.

Therefore, the tape moving post is required to move smoothly when the tape is pulled out, and to be surely held and fixed at a predetermined position after the completion of loading on the magnetic head or the like.

[Problems to be solved by the invention]

As described above, the pulling out of the tape from the tape cassette in the tape recorder or the like is automatically performed by using the tape moving post.

However, in the conventional tape pull-out device using the tape moving post, a dedicated loading motor is required and a complicated drive mechanism such as a gear / cam mechanism, a link / gear mechanism is indispensable. It had some difficulties such as complicated structure and increased price.

Therefore, an object of the present invention is to provide a tape guide device that can easily pull out a tape from a tape cassette without requiring a dedicated drive source or a complicated drive mechanism.

[Means for solving problems]

In order to achieve the above object, a tape guide device according to the present invention has a magnetic head housed in a cassette on a back surface of a surface provided with a reel base for positioning and mounting the cassette from a first position in the cassette to a magnetic head. Respectively support first and second tape moving posts for pulling to a second position outside the cassette capable of scanning on the magnetic tape, and first engaging and rotating with each other.
And a chassis on which the second post moving gear is disposed, and a slider that is slidably attached to the back surface of the chassis by providing a folded cassette pressing lid and a rack that meshes with one of the post moving gears. And sliding the slider to move the cassette pressing lid from a position not covering the reel base to a position covering the reel base or covering the reel base from a position covering the cassette base with the reel base. By the operation of moving to the non-position, one of the post moving gears that mesh with the rack, and the other of the post moving gears that mesh with one of the post moving gears rotate to move both the tape moving posts and The magnetic tape is pulled out from the first position to the second position, or the magnetic tape is returned from the second position to the first position.

[Operation] According to the tape guide device of the present invention, the cassette pressing lid is set to a position not covering the reel base, the tape cassette is positioned and mounted on the reel base, and then the pressing cover is moved to the position covering the reel base. Only by sliding, the tape cassette is securely fixed, and at the same time, the tape in the first position inside the tape cassette is easily and easily pulled out to a predetermined second position outside the tape cassette.

Moreover, since the tape guide device of the present invention does not require a drive source and its drive mechanism is extremely simple, the structure of the entire device is simplified and the cost is reduced. Further, according to the tape guide device of the present invention, the tape cassette is accurately positioned via the support pin and the positioning pin,
On the other hand, since the tape moving post is accurately and surely held at the first position or the second position of the tape via the tension spring, the tape can be pulled out surely and appropriately. The tape pulled out to the second position can be easily returned to the first position only by sliding the pressing lid from the position where it covers the reel base to the position where it does not cover it.

〔Example〕

Next, an embodiment of the tape guide device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 to 3 show an embodiment in which the tape guide device of the present invention is applied to an audio tape recorder. The audio tape recorder 10 is basically composed of a chassis 20 for positioning and mounting the tape cassette 12 and a slider 42 slidably attached to the back surface of the chassis 20.

First, the tape cassette 12 has an opening / closing lid 44 on the front side edge portion.
(See FIG. 1), and the magnetic tape 14 passes through the space in the opening / closing lid 44 and the supply reel 38 and the take-up reel 40.
It is stored wound between and. The bottom surface of the tape cassette 12 is supported by three support pins 46 provided upright on the chassis 20, and two positioning pins 48 are inserted into pin holes (not shown) provided on the bottom surface. Then, with the opening / closing lid 44 opened by the two opening / closing pins 50 (shown by the chain double-dashed line in FIG. 1), the reel stand on the chassis 20 is moved to a predetermined height at a predetermined related position. It is configured to be placed.

The slider 42 includes a raised grip portion 66, a folded cassette holding lid 80, and left and right guide plates 68, 70 extending along both side edges of the rear surface of the chassis 20. And this slider 4
2 is a longitudinal guide groove 7 formed in the left and right guide plates 68, 70.
The support pin 76 is inserted into the inside of the 2,74 via a screw or the like and is attached to the chassis 20.
The support pin 76 engages with the other end (left side in the drawing) of the guide groove 72 from the slider open position (the position shown in FIG. 2) which engages with one end (the right side in the drawing) of 72 and 74. It is configured to slide between slider mounting positions (positions shown in FIG. 3).

The chassis 20 has an arc-shaped guide groove 6 formed on its surface.
Two tape moving posts 56, 58 are provided protruding from the guide grooves 60, 62 for moving the inside of the tape cassette 0, 62 to pull out the tape 14 in the tape cassette 12. This tape moving post 56,5
Reference numeral 8 denotes two post moving gears 52, 54 arranged on the rear surface of the chassis 20 so as to respectively support the posts 56, 58 and mesh with each other, and one gear 52 of one of these gears meshes with these gears. It is configured to be moved by a moving mechanism including a rack 84 formed on the inner peripheral surface of the first half of one guide plate 68 of the slider 42 so as to rotate the gears 52 and 54, and the slider 42 is opened as described above. In position, the tape moving posts 56, 58 move these posts to the first position within the tape cassette 12, ie, the tape ejection position (see FIGS. 1 and 2).
The slider 42 is engaged with one end portion (lower end portion in the drawing) of the guide grooves 60 and 62 for restricting the guide groove 60, 62 at the position shown in the drawing.
A predetermined second position outside the tape cassette 12 in the mounting position of the tape, that is, a tape pull-out position (position shown in FIG. 3)
It is configured to engage with the other end portion (upper end portion in the drawing) of the guide grooves 60, 62 which are regulated by.

One of the post-moving gears 52 has a tension spring.
64 is attached, and the tape moving posts 56 and 58 are always biased toward one end of the guide grooves 60 and 62.

The presser lid 80 is covered on the tape cassette 12 placed on the chassis 20 while the slider 42 is slid from the open position to the insertion position, and the presser portion 82a protrudes from the window hole 80a. The tape cassette 12 is pressed and fixed by the spring 82.

A support panel 90 that supports a known reel drive device 88
Is mounted at a predetermined position on the back surface of the chassis 20 through the mounting screw 92, the spacer 94 and the mounting hole 96, and the switch 36
Reel drive shafts 98, 98 rotated by a reel motor 36 driven via a are projected from the surface of the chassis 20.

In such a configuration, when the tape 14 is pulled out, that is, the tape 14 travels through the recording / reproducing head 32.
When loading onto the 34 (see FIG. 3), first,
As shown in FIG. 2, the tape cassette 12 is positioned and mounted on the chassis 20 with the slider 42 set to the open position. In this case, the slider 42 is biased leftward in the figure by the tension spring 64 via the post moving gear 52 and the rack 84, and the support pins 76, 76 engage the right end portions of the guide grooves 72, 74. It is stably and accurately held in the mating or open position. Therefore, when the tape cassette 12 is accurately positioned and mounted on the chassis 20 with the opening / closing lid 44 opened via the support pins 46, the positioning pins 48, and the opening / closing pins 50, the tape moving posts 56, 58.
Is accurately located at a position inside the tape 14, that is, at the tape ejection position. In addition, the reel drive shaft 98, 98 is the reel 38,
Of course, it is inserted into the shaft hole of 40.

Next, in this state, the slider 42 is pressed toward the insertion position via the handle 66, that is, to the right in FIG. Then, the slider 42 is easily slid through the support pin 76. Then, during this sliding, the slider 42 rotates the moving gears 52, 54 through the rack 84, the tape moving posts 56, 58 move in the tape pull-out position direction through the guide grooves 60, 62, Pull out the tape 14 in the pull-out position direction,
At the same time, the pressing lid 80 is covered on the tape cassette 12 to hold the tape cassette 12 under pressure. Finally, the slider 42 is inserted into the insertion position shown in FIG. 3. In this state, the body of the slider 42 is urged to the right in the figure by the action of the tension spring 64, and thus the support pin 76 is provided. , 76 is stably and accurately held at the position where it engages with the left end portion of the guide groove 72, that is, at the above-mentioned insertion position, and the one-side cover 80 is lifted by the holding portion 82a of the holding spring 82 from the window hole 80a. In this state, the tape cassette 12 is securely pressed and fixed. Therefore, the tape 14 in the tape cassette 12 is guided to the tape moving posts 56 and 58 which are accurately moved to the tape pull-out position, and recorded / reproduced by the head 32 on the traveling path 34 passing through the recording / reproducing head 32. The loading operation is performed by accurately arranging it in a possible position. Therefore, switch 36
When the reel motor 36 is rotated via a, the reel drive shaft 9
The supply reel 38 or the take-up reel 40 is rotated via 8 and the tape 14 is run at a predetermined speed, and the tape recorder
Recording and reproduction are performed well by 10.

As described above, according to the tape guide device of the present invention, by positioning and mounting the tape cassette on the chassis at the open position of the slider, and then sliding the slider toward the insertion position, The tape in the tape cassette can be easily and surely pulled out and guided to a predetermined position. Further, since the tape guide device of the present invention does not require a drive source and its drive mechanism is extremely simple, the structure of the entire device can be simplified and the cost can be reduced.

Although the present invention has been described with reference to the preferred embodiments, it goes without saying that the present invention can be modified in many ways without departing from the spirit thereof.

〔The invention's effect〕

As described above, according to the tape guide device of the present invention, the tape cassette is positioned and mounted on the chassis with the slider set in the open position, and then the slider is slid toward the insertion position. Only then, the tape cassette can be securely fixed, and at the same time, the tape in the tape cassette can be easily pulled out and guided to a predetermined position.

Moreover, since the tape guide device of the present invention does not require a drive source and has a very simple drive mechanism, the structure of the entire device can be simplified and the cost thereof can be reduced.
Further, the tape cassette can be accurately positioned through the support pins and the positioning pins, while the tape moving post can be accurately and surely held in the take-out position or the take-out position of the tape through the tension spring. The tape can be pulled out accurately and smoothly.

[Brief description of drawings]

1 is an exploded view showing an embodiment of the tape guide device according to the present invention, and FIG. 2 is a partially cutaway plan view of the tape guide device shown in FIG. 1 with a slide set to an open position. FIG. 3 is a partially cutaway plan view of the tape guide device shown in FIG. 1 with the slider set to the mounting position. 10 …… tape recorder, 12 …… tape cassette 14 …… magnetic tape, 20 …… chassis 32 …… recording / playback head, 34 …… tape running path 36 …… reel motor, 38 …… supply reel 40 …… winding Reel, 42 …… Slider 44 …… Opening / closing lid, 46 …… Supporting pin 48 …… Positioning pin, 50 …… Opening / closing pin 52,54 …… Post moving gear 56,58 …… Tape moving post 60,62 …… Guide groove, 64 ...... Tension spring 66 …… Grip, 68,70 …… Guide plate 72,74 …… Guide groove, 76 …… Support pin 80 …… Cassette presser lid, 82 …… Presser spring 84 …… Rack , 88 …… Reel drive device 90 …… Support panel, 92 …… Mounting screw 94 …… Spacer, 96 …… Mounting hole 98 …… Reel drive shaft

Claims (1)

[Claims] 1. A magnetic tape housed in a cassette on the back surface of a surface on which a reel stand for positioning and mounting the cassette is mounted. First and second pull out to two positions
And a chassis provided with first and second post moving gears which respectively rotate and mesh with each other, and a folding cassette holding lid and a rack which meshes with one of the post moving gears. And a slide slidably mounted on the back surface of the chassis, and sliding the slider to move the cassette pressing lid from a position not covering the reel stand to a position covering the reel stand or the cassette holder. One of the post moving gears that mesh with the rack and the other of the post moving gears that mesh with one of the post moving gears by the operation of moving the lid from the position that covers the reel table to the position that does not cover the reel table. Rotates to move both the tape moving posts to pull out the magnetic tape from the first position to the second position or to move the magnetic tape to the first position. A tape guide device characterized by being configured to return from two positions to a first position.