JPS606028B2 - magnetic recording and reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording and reproducing device, and particularly to a magnetic recording device configured to maintain a tape running state by the operation of an electromagnetic drive means such as a plunger, as seen in a vehicle-mounted tape deck. The purpose of the playback device is to maintain the running state of the tape while consuming less power.

Some car tape decks are designed to maintain the running state of the tape by the suction force of a plunger, but with this type of device, it is necessary to turn off the car key and turn off the power supply to the deck. When you refuse, the device automatically returns to the stopped state, so the device is not left in a state where the pinch roller is in contact with the cab stun and can run the tape for a long time, and the pinch roller wears out. This is convenient because it can prevent deterioration in the performance of the device.

However, in order to maintain the running state of the tape, this type of device is equipped with a large-capacity plunger dedicated to holding the tape, and this must be kept in operation while the tape is running, so it cannot be used for tape running, recording, playback, etc. A large amount of power is consumed in areas that are not directly related, shortening the battery's lifespan.

SUMMARY OF THE INVENTION The present invention aims to overcome these conventional drawbacks and to maintain the tape running state with less power consumption.

More specifically, it is equipped with first, second, and two electromagnetic drive means of large capacity and small capacity to maintain the tape running state, and has a large driving force to bring the device to a position where it can maintain the tape running state. In the initial operation process that requires a large-capacity first electromagnetic drive means, this is achieved, and the subsequent holding operation is performed by a small-capacity second electromagnetic drive means to reduce power consumption. This is what I did.

An embodiment of the present invention will be described below with reference to the drawings.

First, FIG. 1 shows the state of the operating rod machine and the locking mechanism of the rod in the stopped state of the magnetic recording and reproducing apparatus of this embodiment, where 1 is the rewind rod, 2 is the fast forward rod
3 is a play rod, and 4 is a stop and cassette direct rod (hereinafter referred to as a stop rod). Protrusions la to 4a are provided on the side edges of these rods 1 to 4 to protrude upward. Among the rods 1 to 4, 5 is related to tape running.

This is a Z switch operation board that is moved by operating the switches 1 to 3 in the direction of arrow A to turn on the power switch 6. This switch operation plate 5 is provided so as to be freely movable in the left and right direction (arrow B-C direction) by guide pins 8 and 9 which are set on the mechanism board 7, and the operator 6a of the power switch 6 protrudes. It is urged in the direction of arrow B by the force. 1
This is a locking plate that locks the tape running operating rods 1 to 3 in the operating position, and is slidable in the left and right directions by the guide pins 8 and 9.

This lock plate 1 has protrusions la to 3a of the rods 1 to 3 above.
It has hook parts 11 to 13 for locking each rod in the operating position, and is biased in the direction of arrow B by a tension spring 14 suspended between it and the base plate 7. On the other hand, 15 is a rotating arm that is rotatably provided on the shaft 16, 17 is a connecting arm that is connected to this arm 15 and is rotatable around the shaft 138, and 19 is an actuator whose one end is connected to this connecting arm 17. It's a rod.

This operating rod 19 has a pin 20 planted at one end, and the two pins are inserted into a deformation guide hole 211 provided in the mechanism board 7. Furthermore, the above 3 operating rods 1
Reference numeral 9 denotes a tension spring 22 suspended between the other end and the substrate 7.
The pin 20 is forced into contact with one end of the deformation guide hole 21 by this urging force, and the actuating rod 19 and the arms 15, 17 are held in the position shown in FIG. has been done. Since the protrusion 15a provided at one end of the rotating arm 15 is engaged with the notch 23 of the lock plate 10, in the state shown in FIG. It is held by a register that is moved in the direction of arrow C against force, and at this time the copper parts 11 to 13 of the lock plate 10 are operated.

The protrusions la to 3a of the studs 1 to 3 are brought to a position where they cannot be locked. Next, 24 moves the operating rod 19 in the direction opposite to the arrow ○ (in the direction of arrow A) against the force of the tension spring 22, and the lock plate 1 is moved by the rotating arm 15.
This is a plunger that releases the zero position holding, and is fixed on the board 7.

The above-mentioned plunger 2 is used to drive the above-mentioned operating rod] 9.
The rotary arm 2 is connected to the movable iron core 24a of No. 4 via a pin 25.
6 are connected to each other, and the rotary arm 26 is provided with a protrusion 26a that can be mated with the protrusion 19a of the actuating rod 19. When the plunger 24 performs a suction operation and the movable core 24a is pulled, the arm 25 is rotated counterclockwise around the shaft 27 via the pin 25, and the actuating rod 19 is moved upward by the protrusion 26a in the figure. It is about to be moved. Next, reference numeral 28 denotes an electromagnet that serves as a driving source for locking the operating rod 19 in its moved position, that is, the operating position, and a locking mechanism for the operating rod 19 is associated with this electromagnet 28.

This locking mechanism consists of a pin 20 provided at one end of the actuating rod 19 and a roller 2 rotatably provided between the two pins.
9, the above-described deformable guide hole 21 that moves the pin 20 in an oblique direction, and a lock arm 30 that engages the roller 29 and locks the pin 20 to the oblique side of the guide hole 21. Above lock arm 3 Kawama board 7
It is rotatably provided on a shaft 31 of the electromagnet 28, and one end thereof is attached to an attraction rotating piece 32 of the electromagnet 28. When the actuating rod 19 is moved to the actuating position by the operation of the plunger 24, and the rotating piece 32 is rotated by the attraction operation of the electromagnet 28, the lock arm 30 is moved counterclockwise to the center of the shaft 31. The arcuate piece 3 at the other end is rotated.
Even at 0a, the roller 29 is held in position, and the actuating rod 1
9 is held in the working position layer. The plunger 24 and the electromagnet 28 are both activated at the same time when the power switch 6 is turned on, but the plunger 24 is activated for a short time by an electric circuit (not shown) and returns to its original state, and the power to the electromagnet is cut off. It is designed to remain in operation until the

The operation of the configuration so far will be explained next.

When the cassette is installed from the stopped state shown in FIG. 1 and the play rod 3 is pushed in the direction of arrow A, for example, the protrusion 3a of the play rod 3 moves along the tapered surface of the switch operation plate 5 during this pushing operation process. Then, move the switch operation plate 5 in the direction of arrow C to turn on the power switch 6.
When the power switch 6 is turned on, the plunger 24 performs a suction operation Z, moves the actuating rod 19 in the direction of arrow A, and releases the lock plate 10 from being held in position by the rotating arm 15. By this release, the lock plate 10 is pulled in the direction of arrow B by the force of the tension spring 14, and its copper part 13 locks the protrusion 3a of the play rod 3, allowing the play rod 3 to be operated as shown in FIG. hold in position. On the other hand, since the electromagnet 28 is also actuated at the same time as the plunger 24, a counterclockwise rotation biasing force is applied to the lock arm 30, and when the actuating rod 19 is brought to the actuating position, the lock arm The arcuate piece 30a of 30 holds the roller 29 and pin 2.
0 is held at the oblique side of the deformation guide hole 21, so that even if the plunger 24 is returned to its original position, the actuating rod 19
remains locked in the operating position as shown in FIG.

The device is thus in a regeneration state. In this state, the pin 20 of the actuating rod 19 tries to slide down the oblique side of the deformation guide hole 21 under the force of the tension spring 22, and exerts a force E on the lock arm 3, but this force is applied to the lock arm 30. Since the force required to lock the actuating rod 19 is reduced, the electromagnet 28 can have a significantly smaller capacity than the plunger 24. can.

Rewind rod 1, fast forward.

When the pad 2 is pushed in, it is locked in the same way. To release the locked state of the tape running operating rod by the locking plate 10, push the stop rod 4 to return the tape running operating rod, which is already locked in the operating position, to its original position by the force of a spring (not shown). , power switch 6
This can be done by turning it back off. In addition, the power can be cut off without operating the stop rod 4, and the electromagnet 28
This can also be done by solving the operating state of .
That is, when the electromagnet 28 comes to a stopped state, the actuating rod 19
is returned to the original position where the pin 20 is brought into contact with one end of the deformation guide hole 21 by the force of the tension spring 22, and this returning force causes the rotating arm 15 to rotate counterclockwise to rotate the lock plate 10. Push in the direction of arrow C to unlock the tape running control rod. This means that for magnetic recording and reproducing devices for vehicle battles, simply returning the car key to the OFF position will automatically stop the device, preventing deterioration in device performance. It is also effective from the point of view of By the way, the magnetic recording and reproducing apparatus of this embodiment is a reciprocating type device that can run the tape at a constant speed in both forward and reverse directions, and the plunger 24 is a switching drive source that switches the tape constant speed running direction. It is functioning as.

To explain this using FIG. 3, the plunger 24
An arm 33 is rotatably mounted at one end of the rotary arm 26 connected to the movable iron core 24a. A tension spring 34 is connected between this arm 33 and the substrate 7.
is suspended to hold the arm 33 in the position shown in the figure. At the free end of this arm 33 is a pin 35 that protrudes downward.
is provided, and a forward/reverse switching plate 36 is arranged opposite to this pin 35. This forward/reverse switching plate 36 is connected to the pin 3 above.
5 has two recesses 37a and 37b that can be selectively engaged, and is rotatable about a shaft 38. Further, this forward/reverse cutting f shikisaka 36 is also controlled by the pin 39 on the forward/reverse switching control plate 40.
It is connected so that it can rotate freely. This control plate 40 is slidable in the direction of arrow A-- by means of a guide (not shown), and is used to switch the electric circuit, pinch loaf, and reel stand between forward and reverse directions. That is, the switch 41 for changing the electrical circuit for changing the connection of the magnetic head, etc., has its operator 41a engaged with the recess 42 of the control board 40, and is switched as the control board 40 moves in the directions of arrows A and D. Action is taking place. Further, pins 47 and 48 are mounted on the support levers 45 and 46 of the pair of pinch rollers 43 and 44, and the pins corresponding to the pinch loaf not related to tape running are connected to either of the cam portions 49a and 49b of the control plate 40. The pinch rollers 43 and 44 are selectively separated from the capstans 50 and 51. Also, an idler 5 that applies a winding force to either one of the reel stands 52, 53
A control plate 401 is connected to a shaft 55 on the board 7 via a freely retractable bar 56 and a relay lever 58, and as the control plate 40 moves, the tape is selectively wound on the reel stands 52 and 53. Power is now being transmitted. FIG. 3 shows the forward rotation playback state. In this state, when the plunger 24 is sucked manually or automatically by detecting the end of the tape, the pin 35 of the arm 33 is moved to the forward/reverse switching plate 36. The switch plate 36 is rotated clockwise by engaging with the recess 37b of the switch plate 36, the control plate 40 is moved in the direction of arrow D, the switch 41 is switched to the reverse side, and the pinch roller 43 is rotated clockwise.
is pulled away from the capstan 60, the pinch loaf 44 is pressed against the capstan 51, and the idler 54 is moved to the reel stand 53.
Tape reversal playback is performed by bringing the tape into contact with the tape.

Note that 59 is a center click spring that holds the control plate 40 in two positions, the normal dislocation layer and the reverse position. As described above, in this embodiment, the plunger 24 for switching the tape constant speed running direction is activated when the power is turned on and is also used to move the actuating rod 19 to the actuating position, thereby simplifying the configuration.

In addition, even if the electromagnet 28 is replaced with a plunger or the plunger 24 is replaced with an electromagnet in the above embodiment, the results are substantially the same. As explained below, the magnetic recording/reproducing apparatus of the present invention has a first and a second magnetic recording device in order to maintain the tape running state.
The first electromagnetic drive means is provided with two electromagnetic drive means, and the first electromagnetic drive means is operated for a short time during the initial operation process which requires a large drive force to bring the device into a state where the tape is running. Since the subsequent operation state is maintained by the operation of the second electromagnetic drive means, it is sufficient to have a small capacity of the second electromagnetic drive means that is kept in operation while the tape is running. Power consumption can be significantly reduced compared to the pot type.

Further, if an electromagnetic drive means for switching the tape running direction at constant speed is used as the first electromagnetic drive means, this drive means can be effectively utilized and the structure can be simplified. Furthermore, if the operating rod lock mechanism operated by the second electromagnetic drive means is configured using a deformed guide hole (21 in the example) and a lock arm (30 in the example), the force applied to the lock arm can be dispersed. Therefore, the capacity of the second electromagnetic drive means can be further reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a stopped state of a magnetic recording/reproducing device according to an embodiment of the present invention, FIG. 2 is a plan view showing a playing state of the device, and FIG. 3 is a plan view showing the tape constant speed running direction switching of the device. FIG. 3 is a plan view showing the mechanism. 3... Play rod, 5... Switch operation board, 6.
...Power switch, 7... Board, 10.
...Lock plate, 19...Operating rod, 2
0...Pin, 21...Deformation guide hole,
24...Plunger, 28...Electromagnet, 30...Lock arm, 36...Normal/reverse switching sliding plate, 40...Normal/reverse switching control Board. Figure 1 Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A tape travel operating rod, a movable lock plate for locking the operating rod in an operating position, an actuating rod for displacing the lock plate to a position where the rod can be locked, and The first to bring the actuating rod to the actuating position.
a locking mechanism for locking the operating rod in the operating position; and a second electromagnetic driving means for holding the locking mechanism in a lockable state; When the lock plate is turned on, the first electromagnetic drive means operates for a short time to drive the actuating rod to bring the lock plate to the lockable position, and the second electromagnetic drive means operates to move the actuating rod. A magnetic recording and reproducing apparatus configured such that the tape running operating rod is locked in the operating position and is held in the operating position while the second electromagnetic drive means is operating. 2. The magnetic recording and reproducing apparatus according to claim 1, wherein the first electromagnetic drive means is for switching the constant speed running direction of the tape. 3. A patent characterized in that the lock mechanism is composed of a pin provided at one end of the actuating rod, a deformable guide hole that moves the pin diagonally, and a lock arm that locks the pin on the oblique side of the guide hole. A magnetic recording/reproducing device according to claim 1.