JPH045081Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a fast forward/rewind device for a tape recorder that has an improved switching mechanism between a fast forward state and a fast rewind state.

(b) Prior Art In a tape recorder, it is necessary to rewind the tape when playing back a recorded part, and to fast-forward the tape when skipping unnecessary parts during playback. When rewinding or fast-forwarding the tape, the tape is running at high speed, so if you rapidly rewind the tape while it is fast-forwarding, or conversely, fast-forward while it is rewinding quickly, a large force is applied to the tape. , there is a risk of cutting the tape. Therefore, when switching from fast forward to fast rewind, or conversely from fast rewind to fast forward, the brake is applied to temporarily stop the tape running, and then the tape running direction is switched. Providing one would complicate the mechanism and is not preferable. Furthermore, as previously described in Japanese Utility Model Publication No. 44-10931, when the rewind lever is pressed, the fast-forward lever is not pressed, considering the shape or size of the locking hook of the locking plate of the push-button switch. In some cases, the rewind lever is not pressed when the fast forward lever is pressed. However, a special push-button switch must be used, and some tape recorders do not use such a push-button switch.

(c) Purpose of the invention This invention applies when either the fast-forward lever or the fast-rewind lever is slid by a rotating arm used to move a high-speed wheel for fast-forwarding or fast-rewinding. , the other fast rewind lever or fast forward lever in a non-sliding state is not slid, and the tape recorder is prevented from being directly switched from a fast forward state to a fast rewind state or from a fast rewind state to a fast forward state. An object of the present invention is to provide a fast forward/rewind device.

(d) Structure of the invention The invention provides an engaging pin for a fast forward lever and a fast rewind lever, and engages the engaging pin of the fast forward lever and fast rewind lever with a rotating arm that is rotatably attached. , by sliding either the fast-forward lever or the fast-rewind lever, the rotating arm is rotated to bring the high-speed wheel into contact with the drive wheel, and the fast-forward lever or the rewind lever that is in the non-sliding state is rotated. The present invention relates to a fast forward/rewind device for a tape recorder, characterized in that an engaging pin is engaged with an engaging wall to prevent a fast forward lever or a fast rewind lever from sliding.

(E) Embodiment The fast forward/rewind device for a tape recorder of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a fast forward lever slidably provided on the sub-chassis 2;
A locking window 4 having an engaging pin 3 at its tip and an inclined surface is bored. Reference numeral 5 denotes a quick rewind lever which is also slidably provided on the sub-chassis 2 and has an engagement pin 6 and a locking window 7 like the fast forward lever. The fast rewind lever 5 and the fast forward lever 1 are biased by springs 8 and 9 in directions opposite to the directions of arrows A and B, which are the stop positions. 10
is a rotating arm formed in an arc shape, which is rotatably attached to the sub-chassis 2 with a shaft 12 passing through a hole 11 in the center, and which is attached to the sub-chassis 2 with a spring 13.
As shown in the figure, it is energized to be in a neutral state. As shown in FIG. 11, the rotating arm 10 has an engagement wall 17 formed around its upper surface symmetrically having straight portions 14, 14 and curved portions 15, 15,
Also, on the back side, as shown in FIG. 12, there are locking protrusions 18,
18 are provided. In the recess 19 surrounded by the engagement wall 17 of the rotating arm 10, the engagement pins 6, 3 of the fast rewind lever 5 and the fast forward lever 1 are inserted near the inside of the arcuate portions 16, 16 of the engagement wall 17. It is located in Therefore, as will be described later, when the fast forward lever 1 or the fast rewind lever 5 is slid in the directions of arrows A and B, the engaging pin 3 or the engaging pin 6
corresponds to the straight parts 14, 14 of the engagement wall 17, and rotates the rotating arm 10 counterclockwise or clockwise against the biasing force of the spring 13, but at this time, the fast rewinding lever 5 on the side that is not slid Alternatively, when the rotating arm 10 is rotated, the engaging pin 6 or the engaging pin 3 on the fast-forwarding lever 1 moves along the arcuate portions 16, 16 of the engaging wall 17, and finally moves along the curved portion 15. , 15, so it does not get in the way. 20 is a drive gear 2 provided coaxially with a power transmission pulley 21 rotated by a motor (not shown).
2 is a first tape reel shaft, and a first reel gear 24
are directly connected to each other, and the first tape reel shaft 22
A first high-speed gear 26 is attached to a shaft 25 coupled to the shaft 25 so as to be freely vertically movable. Said first high speed gear 26
is placed on one end of a seesaw-shaped first gear lever 29 at a fulcrum 28 on the main chassis 27, and is pressed from above by a spring 30. The other end of the first gear lever 29 is located below the rotating arm 10. 31 and 32 are shafts 33
A transmission gear and a second high-speed gear 32, which are rotatably provided in the transmission gear and a second high-speed gear 32, are located on one end of a second gear lever 35, which is attached in a see-saw shape at a fulcrum 34, like the first gear lever 29. , spring 3
It is energized downward at 6. 23 is a second tape reel shaft that meshes with the first transmission gear 31;
It has a reel gear 37.

Next, the operation of the fast forward/rewind device for a tape recorder according to the present invention will be explained. The tape recorder of the present invention is a reverse type tape recorder that performs playback while the tape is running in either the left or right direction, but for the sake of explanation, we will explain the case in which playback is performed while the tape is running in the left direction as an example. .

To perform regeneration, press the regeneration button (not shown), the motor rotates and the flywheel (not shown) is pressed.
is rotated to drive the capstan, and the capstan and pinch roller move the tape to the left. At the same time, the power transmission pulley 21 is rotated, and its rotational force is transmitted to the first reel gear 24 via the small gear 38 and the like, and further transmitted to the first tape reel shaft 22, which causes the first tape reel shaft 22 to rotate. The tape rotates and is wound up by the capstan and the pinch roller.

There are times when I want to fast-forward through unnecessary parts of a tape during playback. At that time, move the fast forward lever 1 to arrow A.
When pushed in the direction, the engagement pin 3 of the fast forward lever 1
hits the straight portion 14 of the engaging wall 17 of the rotating arm 10, and the rotating arm 10 is rotated counterclockwise as shown in FIG. When the rotating arm 10 rotates counterclockwise, the locking protrusion 18 on the back side pushes down one end of the first gear lever 29, as shown in FIG. Then, the first gear lever 29 seesaws around the fulcrum 28, so the end opposite to the above is floated, and the first high speed gear 26, which is coaxial with the first tape reel shaft 22, is moved against the spring 30. Lift it up and engage the first high speed gear 26 with the drive gear 20 as shown in FIG. Therefore, the rotational force of the power transmission pulley 21 is transmitted to the first tape reel shaft 22 through the drive gear 20 and the first high-speed gear 26.
It is transmitted through Moreover, since the first high-speed gear 26 has a smaller diameter than the drive gear 20, the first high-speed gear 26 has a smaller diameter than the drive gear 20.
The tape reel shaft 22 is rotated at high speed to wind up the tape at high speed, so that the tape is rapidly fed. When the fast-forwarding lever 1 is pushed in, the locking piece 39 on the locking lever (not shown) hits the slope of the locking window 4 and moves the locking lever a little to the right, so the fast-forwarding lever 1 When it is fully pushed in, the locking piece 39 is fitted into the recess 40 of the locking window 4, and the fast-forwarding lever 1 is locked, so that the fast-forwarding state is maintained. The engaging pin 6 of the rewinding lever 5 enters into the curved portion 15 when the rotating arm 10 is rotated counterclockwise, so the rotating arm 10 does not fit into the engaging pin 6 of the rewinding lever 5. It can be rotated counterclockwise without being disturbed, but even if the rewind lever 5 is pressed by mistake during fast forwarding, the engagement pin 6 of the rewind lever 1 will hit the engagement wall 17, so the rewind will not be possible. The lever 5 will not slide and become in the rewinding state.

To cancel the fast-forwarding state, press the stop button. When you press the stop button, the locking lever is moved slightly to the right, so fast forward lever 1
The engagement between the locking window 4 and the locking piece 39 on the locking lever is released, and the fast forward lever 1 is moved by the spring 8.
It is slid in the opposite direction of arrow A by the applied force and returned to its original position. Further, since the rotating arm 10 is rotated clockwise by the spring 13 and returned to its original position, the first gear lever 29 also seesaws and is returned to its original position. Therefore, the first high speed gear 2
6 is lowered by the biasing force of the spring 30 and disengages from the drive gear 20, so that the fast forwarding is completed.

Next time when rewinding the tape, use the fast rewind lever 5.
When the lever is slid in the direction of arrow B, the engagement pin 6 on the fast rewind lever 5 hits the straight part 14 of the engagement wall 17 of the rotating arm 10, and the rotating arm 10 is now rotated clockwise. . Said rotating arm 1
0 is rotated clockwise, the engaging protrusion 18 pushes down one end of the second gear lever 35 as shown in FIG. The end portion is floated, and the second transmission gear 32 is lifted up against the spring 36 and meshed with the drive gear 20. Therefore, the rotational force from the power transmission pulley 21 is transferred from the drive gear 20 to the second
The signal is transmitted to the high speed gear 32. The rotational force of the second high-speed gear 32 is transmitted from the transmission gear 31 coaxially with the second high-speed gear 32 to the second reel gear 37 that meshes with the transmission gear 31, and the second tape reel shaft 2
Rotate 3. In this case, the diameter of the second high-speed gear 32 is smaller than the diameter of the drive gear 20, and the second tape reel shaft 23 is connected to the first tape reel shaft, since the diameter of the second high-speed gear 32 is smaller than the diameter of the drive gear 20, and the second tape reel shaft 23 is connected to the first tape reel shaft. 22
is rotated at high speed in the opposite direction. Therefore, the tape runs in the opposite direction and is wound up. At this time, the locking piece 41 of the locking lever is fitted into the recess 42 of the locking portion 7 of the fast rewind lever 5, so that the fast rewind lever 5 is slid against the biasing force of the spring 9. is held in the correct position. Even if the fast-forwarding lever 1 is pressed by mistake in such a state, the engaging pin 3 of the fast-forwarding lever 1 hits the engaging wall 17 of the curved portion 15 of the rotating arm 10 and is prevented from moving, so that the fast-forwarding state is maintained. Never.

(f) Effects of the invention The fast forwarding and rewinding device of the present invention is capable of fast forwarding and rewinding the engaging pins provided on the fast forwarding lever and the fast rewinding lever, which are provided so as to be slidable between the stop position and the operating position. The tape recorder is arranged to be engaged with a rotating arm that performs rewinding switching, and by sliding the fast forward lever or fast rewinding lever to the operating position and rotating the rotating arm, the tape recorder can be put into the fast forwarding state or the winding state. When in the return state, the rotating arm prevents the fast rewind lever or the fast forward lever in the stop position from sliding to the operating position, so there is no need to provide a special member to the lock mechanism of the operation button. It is possible to prevent switching operations such as switching to rewinding state during fast forwarding or switching to fast forwarding state during rewinding, and this invention has a great effect in simplifying the locking mechanism of the operation button. It is something that plays.

[Brief explanation of the drawing]

The figures all relate to the fast forwarding/rewinding device of the tape recorder of the present invention, in which Fig. 1 is a plan view showing the stopped state, Fig. 2 is a plan view showing the fast forwarding state, and Fig. 3 is a plan view showing the fast forwarding state.
The figure is a plan view showing the rewinding state, Fig. 4 is a sectional view showing the stopped state, Fig. 5 is a sectional view showing the fast forwarding state, Fig. 6 is a sectional view showing the rewinding state, and Fig. 7 is a sectional view showing the stopped state. 8 is a right sectional view showing the rewinding state, FIG. 9 is a left sectional view showing the stopped state, and FIG. 10 is a left sectional view showing the fast forwarding state.
Figure 1 is a perspective view of the rotating arm viewed from the surface, Figure 12
The figure is a perspective view of the rotating arm seen from the back. 1... Rapid feed lever, 3... Engagement pin, 5...
Quick rewind lever, 6... Engaging pin, 10... Rotating arm, 17... Engaging wall, 18... Locking protrusion, 2
0... Drive gear, 21... Power transmission pulley, 22
...First tape reel shaft, 23...Second tape reel shaft, 26...First high speed gear, 29...First gear lever, 31...Transmission gear, 32...Second high speed gear, 37... 2nd reel gear.

Claims (1)

[Scope of utility model registration request] A fast forwarding lever and a fast rewinding lever are provided to be slidable between a stop position and an operating position, respectively, and have an engagement pin at their tips; a rotating arm formed with an engagement wall that engages with each of the engagement pins when the lever slides to the operating position, and which is rotatably displaced in different directions by a pressing force received from each of the engagement pins; and an electric motor. a drive gear to which the rotation of the electric motor is transmitted and rotated when the motor is in a rotating state; a first high-speed gear meshing with the gear and transmitting the rotation of the drive gear to the first tape reel shaft; and the rotating arm being rotationally displaced to the other by sliding the quick rewind lever to the operating position. a second high-speed gear that meshes with the driving gear and transmits the rotation of the driving gear to the second tape reel shaft when the fast forward lever or the fast rewind lever is in the operating position; The operating position of the fast rewind lever or fast forward lever is determined by the engagement of the engagement pin provided on the fast rewind lever or the fast forward lever that is at a certain stop position with the engagement wall formed on the rotating arm. 1. A fast-forwarding and fast-rewinding device for a tape recorder, characterized in that the device prevents the tape recorder from sliding.