JPS62293550A - Drive mechanism for magnetic recording device - Google Patents

Abstract

PURPOSE:To effectively use the space in three-dimension and to attain miniaturization by connecting left/right loading gears by a connection gear and delivering a drive torque from a loading motor through a gear. CONSTITUTION:Each gear is driven reversely at loading in reversing a loading motor from the stop state at ejection, each loading block 13 and a pinch roller block 22 are retrogressed respectively and a tension arm 31 is driven backward. Finally, a cassette loading motor is driven to apply ejection of the cassette. Through the constitution of the provision of one series of gears 2-6 in such a way, the loading lock 13 and a pinch roller block 22 (thus, pinch roller 24) are moved forward/backward, the idle space from the overlapped part onto the left/right loading gears 7R, 7L up to this side of the rotary head is used to operate the loading arm 12, then the mechanism is miniaturized.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Object of the Invention] (Industrial Field of Application) The present invention provides a method for driving a loading block and a pinch roller in an LA magnetic recording device equipped with a rotating head. This invention relates to a mechanism, and in particular to a drive mechanism that has been made smaller in size by improving the arrangement of loading gears.

(Prior Art) In recent years, with the development of digital audio technology, a technology has been developed for converting analog audio signals into digital signals and recording them on tape. In this way, converting an analog signal into a digital signal requires an extremely wide exclusive frequency band, so in a magnetic head for recording or reproducing signals on tape, it is necessary to
It is necessary to widen the contact area between '7. For this reason, it is necessary to adopt a rotating head system instead of the conventional fixed head system, and based on these conditions, various magnetic recording devices equipped with a rotating head have been developed. Proposed.

In a magnetic recording device such as a tape recorder equipped with the above-mentioned rotating head, left and right loading is required.

A tape loading mechanism is required that moves the tape block back and forth to wrap the tape around the rotating head.

In such a tape loading mechanism, the left and right loading gears are rotated by a loading motor, and the left and right loading blocks are moved back and forth through the movement of the loading arm caused by this rotation.The arrangement of each member is as follows: A configuration is adopted in which the left and right loading gears are directly meshed, and each loading block is placed on the outside of the gears.

However, if the loading arms are arranged outside the gears, the space for movement of the loading arms becomes large, and there is a problem in that the loading arms interfere with the reel base when the loading block moves back and forth. Further, when the loading arms are provided in a crossed manner, the loading arms move on the reel base, which increases the thickness of the structure, which also contributes to the increase in size of the mechanism.

On the other hand, at the same time as the loading arm moves the loading block back and forth, it is necessary to drive the pinch roller arm that moves the pinch roller for tape running back and forth.
In this case, in order to drive the pinch roller arm using the tape loading mechanism as described above, the timing of the operation of the pinch roller and loading block, that is, the timing of the operation of the pinch roller arm and the loading arm, must be timed. There must be. Therefore, conventionally, a configuration has been adopted in which the timing is reduced by using a transmission means such as engaging a cam groove cut in the drive gear on the loading motor side with the cam play 1 on the loading gear side. This tends to complicate the speed configuration and also leads to an increase in the size of the arrangement.

This problem of increasing the size of the mechanism goes against the strong demand for compactness, especially in tape recorders used in vehicles.

(Problems to be Solved by the Invention) As mentioned above, in the conventional magnetic recording device, there are problems such as interference between members in the tape loading mechanism, and problems with the arrangement of the tape loading mechanism and the pinch rollers that operate simultaneously. There were problems with multi-layer construction and space expansion.

The present invention was proposed to solve these problems, and its purpose is to drive a loading block and a pinch roller in a magnetic recording device having a rotating head, and to prevent the members from interfering with each other. It is an object of the present invention to provide a drive mechanism for a magnetic recording device that can simplify the arrangement and reduce the space without causing any problems.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the drive mechanism of the magnetic recording device according to the present invention connects the left and right loading gears A2 via the connecting gear A2. , and one loading gear A7
The driving force is transmitted between the and loading motor side using gears.
Roughly speaking, it is characterized in that a pinch roller arm is connected to one of these gears A7.

(Function) With the above-described configuration, the present invention can drive the loading block and the pinch roller simultaneously.

Since the left and right loading arms can be moved using the empty space in front of the rotating head side from the loading gear, the mechanism can be made more compact due to effective use of space, and there is no interference between moving parts. Not at all.

In general, since the gear A7 is used in the driving force transmission portion, the configuration is simplified and the space is also reduced.

(Example) Driving the magnetic recording device according to the present invention as explained above+a
A horizontal embodiment will be specifically described using the drawings.

*Configuration of the Embodiment In FIG. 1, a loading gear 7R on the right side is connected to a drive gear 1 connected to a loading motor (not shown) via five transmission gears 2 to 6. The right loading gear 7R is connected to the left loading gear 7L via two connecting gears 8 and 9. With this series of connection configurations, the right loading gear A7
7 RGJ The loading gear 7L on the left side rotates in the same direction as the drive gear 1, and the loading gear 7L on the left side rotates in the opposite direction to the drive gear 1.

One end of a loading arm drive member 10 is coaxially attached to each of the left and right loading gears 7R, 7L, and each loading arm drive member 10 has a spring 1 provided between it and the loading gears 7R, 7L.
1, if the loading gears 7R and 7m are biased in the rotational direction and no external force is applied, the loading gear 7R.

It is designed to rotate together with 7L. This loading arm drive member 10 is engaged with an engagement pin 12b of the loading arm 12 through an engagement hole 10a, and when rotated together with the loading gears 7R and 7L, the loading arm 12 is rotated around the shaft 12a. Rotating back and forth, [1
It is necessary to move the ding block 13, which is engaged with the engagement hole 12G at the tip of the ding arm 12 by the engagement pin 13a, back and forth along the guide groove 14. Also, the loading block 13 moves forward during loading by means of a vertical post 15 and an inclined post 16 pulled 89 on it, pulls out the tape forward, and brings it into contact with the rotary head 17 over 90'. It is something.

In FIG. 2, one end of a pinch roller arm drive unit 'FA18 is coaxially attached to the fourth transmission gear 5, and this pinch roller arm drive member 18 is connected to the fourth transmission gear 5. By the spring 19 provided in
It is biased in the rotational direction of the fourth transmission gear 5, and rotates together with the fourth transmission gear 5 when no external force is applied.

The pinch roller arm drive member 18 engages with the engagement hole 20a of the pinch roller arm 20 with an engagement pin 18a at its tip, and when rotated together with the fourth transmission gear 5,
A pinch roller block 22 that rotates the pinch roller arm 20 back and forth around a shaft 20b and engages the tip of the pinch roller arm 20 via a pinch roller link 21.
is moved back and forth along the guide groove 23. A pinch roller crimping arm 25 having a pinch roller 24 at its tip is rotatably attached to one end of the pinch roller block 22. 26 in the figure is the KiVpustan axis.

On the other hand, as shown in Figure 3, the left loading arm 1
2 is provided with a gear portion 12d and is connected to a tension arm pull-out gear 28 via a connection gear 27.

A tension arm 31 is coaxially connected to the tension arm pull-out gear A728 via two tension links and a spring 30. This connection allows the tension arm 31 to rotate back and forth as the left loading arm 12 rotates. A tension post 32 is provided at the tip 9Xi of the tension arm 31 to perform a no-vo of tape tension during play. Reference numeral 33 in the figure is a tension 1 nervous activation member that locks the tension link 29 during play, releases the biasing force of the spring 30, and causes the tension arm 31 to perform tension servo.

Functions of this embodiment The functions of this embodiment having the above configuration are as follows.

■When loading a tape When loading a tape, the loading motor rotates as soon as the cassette loading is completed by inserting the cullet. As a result, the drive gear 1 rotates clockwise from the position shown in FIG.

Along with this operation, the loading gear 7R on the stone side rotates clockwise via the five transmission gears 2 to 6, and the loading gear 77L on the left side rotates in the opposite direction via the two connecting gears 8 and 9. Rotate in the direction. Each loading gear 177R, 7L
With the rotation of , the left and right loading arm drive members 10 rotate, and the loading arm 12 rotates forward around +1@12a.

As a result, the loading block 13 engaged with Jl at the tip of the loading arm 12 moves forward along the guide groove 14.

On the other hand, since the fourth transmission gear A75 rotates clockwise,
The pinch roller arm drive member 18 rotates together with this, and the pinch roller arm 20 rotates forward about the shaft 20b. As a result, the pinch roller block 22 moves forward along the guide groove 23 via the pinch roller link 21. Therefore, the pinch roller 24, which is attached to the pinch roller block 22, moves forward.

Roughly speaking, as the left loading arm 12 rotates forward due to the rotation of the left []-ding gear 7L, the tension arm 31 connected thereto rotates forward.

Finally, as shown in FIGS. 4 to 6, when the loading block 13 and the pinch roller block 22 are fixed in their respective predetermined positions and the tape comes into contact with the rotating rod 17, the drive gear 1 rotates slightly. Stop at. As a result, transmission gears 2 to 6, loading gears 7R, 7L,
and the connecting gears 8 and 9 respectively stop. Further, the tension arm 31 is also held at a fixed position in the front.

At the time of ejection at 019198, by rotating the loading motor in the reverse direction from the stop state shown in FIG. 4, each gear rotates in the opposite direction to the previous loading operation. The tension arm 31 also rotates backward. Finally, the position shown in FIGS. 1 to 3 is taken, and as a result, the cassette loading motor is turned on and the cassette is ejected.

As described above, according to this embodiment, the loading block 13 and the pinch roller block 22 (therefore, the pinch roller 24) can be moved back and forth with a simple configuration in which one series of gears is provided. In particular, the left and right loading gears 7R,
7 and 1 are connected via a connecting gear 8°9, the loading arm can be operated by utilizing the empty space that extends from the part that overlaps with loading gears 7R and 7L to the front of the rotating head, and the members do not touch each other like in the past. There is no problem of interference between the two, and the miniaturization of the J:tabetsu couple has been achieved. Roughly speaking, since the transmission coupling of the drive horns from the drive gear V to the loading gears 7R and 7L is performed only by the Ki V, it is possible to freely arrange the space using three-dimensional space, and this also makes the Vl (
This contributes to the miniaturization of f+'.

Note that the present invention is not limited to the above embodiments,
For example, the shape and arrangement of the loading arm, pinch roller arm, etc. (1!1 configuration) can be changed as appropriate.

[Effects of the Invention] As explained above, according to the present invention, the left and right loading gears are connected through the connecting gear V, and the driving force transmission from the loading gear to the Tanabata is transmitted through the gear V. By doing
Unlike in the past, space can be effectively used three-dimensionally without problems such as interference between members, simplifying the configuration and (
It is possible to provide a drive mechanism for the R41 recording head that has been significantly miniaturized.

[Brief explanation of drawings]

1 to 6 are plan views showing one embodiment of a drive mechanism of a magnetic recording device according to the present invention. 1... Drive gear, 2-6... Transmission gear, 7R, 7L
...Loading gear, 8, 9...Connection gear, 10
...Loading arm drive member, 11.19.29
... Spring, 12 ... Loading arm, 1
3... Loading block, 14.23... Guide groove, 15... Vertical post, 16... Inclined post,
17... Rotating head, 18... Pinch roller arm drive member, 20... Pinch roller arm, 21...
Pinch 1 cola link, 22... pinch roller block, 24... pinch roller, 25... pinch roller crimping arm, 26... capstan shaft, 27... connecting gear, 28... tension arm Drawer gear, 29
... Tension link, 31... Tension arm, 32... Tension post, 33... Tension servo activation member. Figure 2 Figure 3 Figure 5 Figure 6

Claims (1)

[Scope of Claim] A magnetic recording device equipped with a rotating head, comprising: a. a loading motor; b. A drive gear rotated by the driving force of the loading motor. c. Transmission gear that meshes with the drive gear. d. Left and right loading gears, one of which meshes with the transmission gear. e. Connecting gear that meshes the left and right loading gears. f, Left and right loading arms that move the left and right loading blocks back and forth in conjunction with the left and right loading gears. g, a pinch roller arm that is connected to either a transmission gear, a loading gear, or a connection gear, and moves the pinch roller back and forth. A drive mechanism for a magnetic recording device characterized by comprising each of the members a to g above.