JPH03276449A - Driving device for headphone stereo or the like - Google Patents

Abstract

PURPOSE:To flatten and miniaturize a driving device of a headphone stereo or the like to diversify the functions by driving front and rear motors to supply a large power for FF, REW, cam rotation, or the like. CONSTITUTION:When a front direct driving motor 3 is rotated counterclockwise, a capstan gear 5 on the same shaft as a capstan 2 is rotated counterclockwise to rotate a connector gear 4 clockwise. Then, an FF arm 10 stuck to a shaft 7 of a main gear 6 is rotated counterclockwise with the shaft 7 as the fulcrum, and an FF gear 11 axially supported on the front end of the arm 10 is engaged with a front reel base 12 to transmit the rotation to the base 12, and the FF state is set. When a rear motor 3' is rotated counterclockwise, a gear 5' of a capstan 2' is rotated counterclockwise to rotate a gear 4' clockwise, and a gear 11' is engaged with an outer gear 6a of the main gear 6 in this manner, and the FF torque is increased. Further, power sources of motors 3 and 3' are turned off to switch the FF state to the stop state, and FF operation is performed from the stop state.

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to a drive device for a headphone stereo, and in particular, a device that uses two motors simultaneously for FF, REV, and cam rotation, which require large amounts of power. 2. Description of the Related Art ``Prior Art'' Related to Drive Devices for Headphone Stereos In recent years, headphone stereos have become rapidly popular as audio equipment for easily enjoying music or listening to language courses.

On the other hand, this type of audio equipment is desired to be smaller in size, lighter in weight, lower in cost, multi-functional, and highly operable.

In headphone stereos, a single motor supplies power during FF and REV, which require the largest amount of power.

"Problem that the invention attempts to solve" For example, in headphone stereo, FF.

Since the motor was selected based on the REV's maximum torque, it inevitably became thick and large, which was an impediment to making it thinner.

This invention was made in view of the above points, and by simultaneously transmitting power from two small and thin motors,
The purpose of the present invention is to provide a drive device for a headphone stereo or the like that can obtain the maximum torque of FF and REV.

"Means for Solving the Problems" In order to solve the above-mentioned problems, the present invention provides a drive means consisting of a drive motor and a drive transmission section that can change the speed of the rotation of the motor and transmit it to the reel stand. The present invention is characterized in that rotation transmitting parts are provided opposite to each other on the forward side and the reverse side and can communicate with the reverse side or forward side drive transmitting part provided opposite to the open drive transmitting part.

"Operation" In the embodiment shown in FIGS. 1 and 2, the FF operation is performed as follows.

In the stop state shown in FIG. 1, the forward-side direct drive motor 3 is rotated counterclockwise as shown in FIG.

Then, as shown in FIG. 2, rotation is sequentially transmitted from capstan gear 5 to connect gear 4 to main gear 6.

When rotation is transmitted to the main gear 6, the coaxial OFF arm 10 rotates counterclockwise as shown in FIG.
An FF gear 11 pivotally supported at the tip of the arm 10 meshes with the reel stand 12 and rotates the reel stand 12 counterclockwise.

On the other hand, on the reverse side, the direct drive motor 3' is also rotated counterclockwise as shown in FIG.

Then, as shown in FIG. 2, the rotation is sequentially transmitted to the coaxial capstan gear 5'→connect gear 4'→main gear 6'.

When the rotation is transmitted to the main gear 6', the coaxial REW arm 10' rotates as shown in FIG. They engage, decelerate, and double the FF) torque.

"Embodiment" Next, an embodiment of the headphone stereo drive device according to the present invention will be described in detail with reference to FIGS. 1 to 5.

In FIGS. 1 and 2, a forward is rotatably supported on the mechanical chassis 1.
The @ capstan 2 is connected to a direct drive motor 3 (hereinafter referred to as DD motor) on the lower surface of the mechanical chassis 1, and rotates counterclockwise (forward play).

A capstan gear 5 that meshes with the connect gear 4 is fixed on the rotating shaft of the capstan 20, and rotates the connect gear 4 clockwise as shown in FIG.

The connect gear 4 is rotatably supported by a shaft (not shown) vertically disposed on the mechanical chassis 1, and meshes with an outer gear 6a of an adjacent main gear 6, thereby shifting the main gear 6 to a second
Rotate counterclockwise as shown.

The main gear 6 includes the above-mentioned outer gear 6a as shown in FIG.
A two-stage gear consisting of a (reduction gear) and an inner gear 6b, which is rotatably supported by a shaft 7 vertically installed on the mechanical chassis l, and the inner gear 6b meshes with the forward side cam gear 8, The forward gear 9 that meshes with the gear 9 is pivoted to a forward lever 26 that is pivoted to the shaft 7 above the main gear 6.

Further, an FF arm 10 having an FF gear 11 rotatably supported at its tip is fixedly attached to the lower side of the shaft 7 of the main gear 6.

As shown in FIGS. 4 and 5, the cam gear 8 has a structure in which a plurality of cams are mounted on a partially toothed gear having two missing teeth. More specifically, as shown in FIG. 4, the tooth 81 on the circumferential surface is missing at 2tfl.

As shown in Fig. 4, a play lock 13, a return 14 (slightly inside @), and a stop lock 15 are erected around the top surface, and a lock that also serves as a forward manage push is provided in the center. An arm return 16 is provided upright.

Note that the cam gear 8 is locked by a lock arm 17.

As shown in FIG. 1, the lock arm 17 is pivotally attached to a shaft 18 that is swingably suspended from the mechanical chassis l, and has a base end engaged with a rod 20 of a plunger 19, and a distal end. comes into contact with the playlock 13 (see FIG. 4) of the cam gear 8 to prevent the cam gear 8 from rotating clockwise.

A protect arm 21 for FF is pivotally attached to the shaft 18, as shown in FIG.

This protect arm 21 is provided so that the FF gear 11 does not mesh with the forward reel stand 12 when the forward plunger 19 is pulled or when the head chassis 22 is in a play state.

As shown in FIG. 1, the protect connect arm 23 is rotatably supported by a shaft 24 suspended from the mechanical chassis 1, and transmits the movement of the protect arm 21 to the FF arm 10. 25 is a forward management lever, which communicates with the cam gear 8 and rises as shown in Fig. 1;
It is associated with the head chassis 22 and the pinch lever 27. The pinch lever 27 is swingably supported by a shaft 28 erected on the mechanical chassis 1, and has a pinch roller 29 supported at its tip. Then, the pinch roller 29 is swung by the adjacent switch 30 and pressed against the capstan 2 with a tape (not shown) interposed therebetween.

That’s it for the 111th! I~Forward in Figure 6)"l1
1 (right 111 in FIGS. 1 to 3) and its control means have been explained, reverse (reverse
e) Liu (left 11 in FIGS. 1-3) is also provided with similar drive means and its IFJII means. Regarding the main parts on the reverse side, for example, the DD motor 3
are expressed by adding "r'", such as DD motor 3', FF arm 10b1, REW arm 10'.

Next, each operation will be explained.

◎Stop → FF In the stop state shown in Figure 1, D in the forward example
When the D motor 3 is rotated counterclockwise, the capstan gear 5 coaxial with the capstan 2 rotates counterclockwise, as shown in FIG. 2, and the connect gear 4 is rotated clockwise.

As the connect gear 4 rotates clockwise, the main gear 6 rotates counterclockwise as shown in FIG. 2, and the FF arm 10 fixed to the shaft 7 of the main gear 6 rotates counterclockwise using the shaft 7 as a fulcrum. do.

When the FF arm 0 rotates counterclockwise, the FF gear pivotally supported at the tip of the FF arm 10 rotates as shown in Figure 2.
] meshes with the reel stand 12 on the forward side, transmits rotation to the reel stand 12, and puts it in the FF state.

On the other hand, in reverse @, when the DD motor 3' is rotated counterclockwise as shown in No. 21!1, the capstan gear 5' coaxial with the capstan 2' rotates counterclockwise. to rotate the connect gear 4' clockwise.

As the connect gear 4' rotates clockwise, the main gear 6' rotates counterclockwise as shown in FIG. 2, and the REV (rewind) arm lO' fixed to the shaft 7' of the main gear 6' Rotate counterclockwise using ' as the fulcrum.

When the REW arm lO' rotates counterclockwise, the R
The EW gear 11' meshes with the outer gear 6a of the forward side main gear 6, doubling the FF) torque.

◎FF → Stop To change from FF to stop state, both DD motors 3, 3
' Stop the power supply.

◎Stop → Forward Play First, in the stop state shown in Fig. 1, when the plunger 19 on the forward side is energized, the lower end of the lock arm 17 comes off the stop lock 15 of the cam gear 8 as shown in Fig. 3, and the cam gear 8 jumps into the inner gear 6b of the main gear 6 and meshes with it. Then, the cam gear 8 rotates 270 degrees as shown in FIG. 3, and the play lock 13 rotates from the O o'clock position to the 9 o'clock position and stops at the toothless portion 81a.

This rotation of the cam gear 8 causes the forward management lever 25 (N in FIG. 1) to slide upward.

When the forward lever lever 25 slides upward, the forward lever 26 that pivotally supports the forward gear 9 is released, as shown in FIG. 3, and the forward gear 9 engages with the reel stand 12.

Further, the forward management lever 25 is connected to the head chassis 22 and the forward side pinch lever 27, and brings both of them into a play state.

Then, as shown in FIG. 3, when the forward side DD motor 3 is rotated counterclockwise, the connect gear 4 is rotated clockwise.

As the connect gear 4 rotates clockwise, the main gear 6 rotates as shown in FIG.
b rotates the forward gear 9.

When the forward gear 9 rotates, the reel stand 12 meshing with the forward gear 9 rotates to perform forward play. Note that the power for rotating the cam can be increased by rotating the reverse side DD motor counterclockwise.

O Forward play→Stop To change from forward play to the stop state, energize the plunger 19 on the forward side to release the play lock 13 of the cam gear 8.

Then, the forward side cam gear 8 rotates 90 degrees clockwise to the stop lock 15 position.

During this time, the forward management lever 25 is lowered to its original position, and when each mechanism is in the stop state shown in FIG. 1, the power to the forward motor 3 is turned off.

Incidentally, since the drive device for a headphone stereo or the like according to the present invention is bilaterally symmetrical as described above, reverse play and rewind are performed in the same way as forward play and FF on the reverse side.

"Effects of the Invention" As described above, the drive device for a headphone stereo or the like according to the present invention supplies large power for FF, REW, cam rotation, etc. by communicating the motors provided on the forward side and the reverse side. Therefore, unlike the conventional method, a large motor is not required, and a small, flat motor is sufficient.

Therefore, there are practical effects such that the entire headphone stereo etc. can be made compact and flat, and it can also be made multi-functional.

[Brief explanation of drawings]

FIG. 1 is a plan view in a stop state showing an example of the implementation of a driving device for a headphone stereo or the like according to the present invention, FIG. 2 is a plan view in an FF state, FIG. 3 is a plan view in a forward state, and FIG. 4 is a plan view in a forward state. FIG. 5 is an enlarged plan view of the cam gear, and a partially cutaway front view thereof. 3, 3' 4, 4' 6, 6' 8, 8'9' 0 10' 1 Medium mechanical chassis φDD motor φ Connect gear Main gear Fist cam gear Forward gear Reverse gear FF arm-REW arm FF gear REW gear 2゜12′ Reel stand

Claims (1)

[Claims] (1) Drive means consisting of a drive motor and a drive transmission unit that can change the speed of the rotation of the motor and transmit it to the reel stand are installed oppositely on the forward side and the reverse side, and are installed oppositely to both drive transmission units. 1. A drive device for a headphone stereo, etc., characterized in that it is provided with a rotation transmission section that can communicate with a drive transmission section on a reverse side or a forward side.