JP2681415B2 - Tape loading device for tape player - Google Patents

Description

The present invention relates to a tape player such as a DAT, and more particularly to a tape loading device of a tape player for loading a magnetic tape from a loaded tape cassette.

[Prior Art] There is a conventional tape player having a structure shown in FIG. FIG. 5 is a top view showing a schematic configuration of the tape player, and FIGS. 6A to 6C are explanatory views showing a state in which the magnetic tape is loaded from the tape cassette.

The tape player shown in FIG. 5 has a cassette loading section 1 into which the inserted tape cassette C is loaded, loading bases 2 and 3 for loading a magnetic tape T from the loaded tape cassette C, and this loading base. It has guide grooves 4 and 5 for sliding guides, and a rotary head 6 for winding and reading the magnetic tape T wound around the side surface at a predetermined angle by the magnetic tape T loaded by the loading bases 2 and 3. Further, the cassette loading section 1 is provided with optical sensors 7 and 8 for detecting both ends of the magnetic tape T to be pulled out. Further, brakes 9a and 9b are respectively arranged on the reel stands 1a and 1b for rotating the reels of the tape cassette C so as to brake the rotation of the reel stands 1a and 1b as required.

In the tape player having such a configuration, when the tape cassette C is loaded in the cassette loading unit 1, the magnetic tape wound inside by the loading bases 2 and 3 as shown in FIG. 6 (A). T is pulled out toward the rotary head 6. In this case, the take-up reel stand 1b is in a non-rotatable braking state, and the magnetic tape T is pulled out only from the supply-side reel stand 1a.

In this way, when pulling out the magnetic tape T from the supply-side reel stand 1a, a brake is applied to the take-up reel stand 1b, while on the other hand, when pulling out the magnetic tape T from the take-up reel stand 1b. Brakes the supply-side reel stand 1a. In this way, the magnetic tape T is always pulled out from only one reel stand.

[Problems to be Solved by the Invention] By the way, assuming a case where the loading is further continued toward the rotary head 6 and one end T ₁ of the magnetic tape T is detected in the middle of this loading, The loading of the magnetic tape T was continued as it was. In this case, the magnetic tape T wound around the winding reel stand 1b on which the brake is applied is pulled out against the braking force. Therefore, in this case, there is a problem that an unreasonable force acts on the magnetic tape T that is pulled out, and the recording and reproducing performance of magnetic data is seriously adversely affected.

Therefore, in order to solve this problem, conventionally, by detecting the end portion T ₁ of the magnetic tape T in the loading state, the magnetic tape T is rewound by a length required for loading (see FIG. 2B). In this rewound state, the loading was performed again (see FIG. 7C).

With such a tape loading method, the above-mentioned problems can be solved, but it is necessary to consider the length of the magnetic tape T to be rewound each time, and further, the magnetic tape T is wound. There was a problem that the loading time was required only for the returning time.

Therefore, it is an object of the present invention to provide a tape player which has a simple structure and can complete loading in a short time even when an end of a magnetic tape is detected during loading.

[Means for Solving the Problems] A tape loading device for a tape player according to the present invention includes a pair of reel stands on which tape reels are installed, braking means for braking each reel stand, and a magnetic tape from the tape reels. It has a tape loading mechanism for pulling it out and winding it around a rotary head, and a sensor for detecting the end of the magnetic tape. When the magnetic tape is pulled out by the tape loading mechanism, the braking means applies a braking force to one reel stand. Control means is provided for releasing the braking force of the braking means for the one reel stand when the magnetic tape is pulled out from the tape reel and the end of the magnetic tape is detected by the sensor. It is what

Further, in the above means, the control means temporarily moves the tape loading mechanism in the direction in which the magnetic tape is loosened when the end of the magnetic tape is detected by the sensor during the magnetic tape pull-out, and the braking force to one reel stand After releasing, the tape loading is restarted.

[Operation] The operation of the present invention having the above configuration will be described.

During tape loading, one reel stand is in a braking state, the other reel stand is in a free state, and the magnetic tape is pulled out from this reel stand. When the end of the magnetic tape is detected by the sensor during the loading, the braking state of the one reel stand is released. Then, the magnetic tape is pulled out from the reel stand on the side where the magnetic tape is not the end portion.

Therefore, even when the end of the magnetic tape is detected during loading, the work of rewinding the tape is not required, and the tape loading can be completed in a short time. Further, when the braking states of the reel bases are exchanged, the loading mechanism is moved in a direction in which the tension of the loaded magnetic tape is reduced, thereby preventing the influence of the fluctuation of the tension applied to the magnetic tape.

Examples Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a top view showing a mechanical structure of a tape player as one embodiment, and FIG. 2 is a block diagram mainly showing an electric structure of the tape player shown in FIG.

The tape player shown in FIG. 1 is loaded with a tape cassette C in which a magnetic tape T is wound, and a supply reel stand 10 for winding tape reels C ₁ , C ₂ in the tape cassette C and a take-up reel. Cassette loading section 1 with side reel stand 11
2, loading bases 13 and 14 for loading the magnetic tape T from the tape cassette C, guide grooves 15 and 16 for slidingly guiding the loading bases 13 and 14, and one end of the guide grooves 15 and 16 The rotary head 17 arranged on the side and recording and reproducing information on the magnetic tape T wound around the side surface 17a.
And a capstan 18 for running the loaded magnetic tape T at a predetermined speed.

Brake motors 38 and 39 (shown in FIG. 2) are directly connected to the supply side and take-up side reel bases 10 and 11, respectively. Further, a common brake mechanism unit 19 and a solenoid 26 for driving the brake mechanism unit 19 are provided, and the solenoid 26 is driven by an output signal from a control unit described later.

The brake mechanism portion 19 is a pad 20, 20 that comes into contact with the end surfaces of the flanges 10a, 11a formed on the reel stands 10, 11 respectively, and a support member having the pads 20, 20 attached to one end portion. 21,21, shafts 22,22 for rotatably supporting the support members 21,21, a spring 23 attached between the other ends of the support members 21,21, and a shaft 24 for rotation. The interlocking member 25 is movably arranged, and the other end of the interlocking member 25 is attached to the drive shaft 26a of the solenoid 26.

The support member 21 is integrally formed with a mounting portion 21b for mounting on the shaft 22 at an intermediate portion thereof, and a claw portion 21a is formed at a release end portion thereof. The interlocking member 25 is formed at one end with a biasing portion 25a protruding in common for biasing the claw portions 21a, 21a formed on the supporting members 21, 21. In such a configuration, when the drive shaft 26a of the solenoid 26 is moved in the direction of arrow B, the interlocking member 25 swings around the shaft 24. By this swinging, the biasing portion 25a formed at one end of the interlocking member 25 biases the claw portion 21a. By this urging, the support members 21, 21 are rotated in either direction about the shafts 22, 22, respectively. As a result, the pads 20 and 20 attached to the one ends of the support members 21 and 21 are attached to the reel bases 10 and 11, respectively.
The end faces of the flanges 10a, 11a are brought into contact with and separated from each other.

In the figure, reference numeral 50 designates a motor for driving the loading bases 13, 14, reference numeral 51 designates a gear train for transmitting the rotation of the motor, and reference numeral 52 designates the loading bases 13, 14 by the motor 50 via the gear train 51. It is a link mechanism that slides.

Next, the electrical configuration will be described mainly with reference to FIG.

The electrical configuration of this embodiment is based on the input unit 27 for performing various operations.
And a display unit 28 made of a liquid crystal or the like for displaying an input operation or an internal state and the reel bases 10 and 11 are separately braked, and a reel drive unit 29 as a braking means for driving and controlling the rotation speed and the rotation direction. A rotary head controller 30 for controlling the rotation of the rotary head 17 and a magnetic head (not shown) attached to the rotary head 17, a start end (BOT) and an end end (BOT) of the magnetic tape T drawn from the tape cassette C. It has a tape detection unit 31 for detecting EOT), a loading mechanism 46, and a control unit 33 having a CPU or the like that serves as a control center of the entire apparatus.

In the tape detection unit 31, a sensor 34 arranged near the supply-side reel stand 10, a sensor 35 arranged near the take-up reel stand 11, and analog signals from the respective sensors 34, 35 are digital signals. And A / D converters 36 and 37 for converting to.

The reel drive unit 29 includes motors 38 and 39 attached to the reel stands 10 and 11, and reel drivers 40 and 41 that rotate and drive the motors 38 and 39.

The rotary head control unit 30 includes a motor 42 for rotating the rotary head 17, a rotary head driver 43 for driving and controlling the motor 42, a magnetic head 44 attached to the rotary head 17, and data from the magnetic head 44. And an amplifier 45 for amplifying.

The loading mechanism 46 includes the motor 50 and a loading driver 47 that drives and controls the motor 50.

The control unit 33 detects the end portion of the magnetic tape T in a loading state by the detection signals from the sensors 34 and 35, and the one reel stand by detecting the end portion of the magnetic tape T. To the non-braking state, and
It is provided with a function as a loading means 33b for loading the magnetic tape T from the other reel stand side while putting one reel stand in the braking state.

The operation of the tape player having the above-described configuration will be described with reference to FIG.

FIG. 3 is a flow chart showing the loading state, and FIG. 4 is a schematic explanatory view showing the loading state of the magnetic tape. Although FIG. 4 shows a state in which the end end (EOT) of the magnetic tape is detected, even when the start end (BOT) is detected, the braking state of the reel stand is simply changed. The latter is not shown here because the operating states are almost the same.

Step 1 (S1): It is detected whether or not the tape cassette C is inserted. If the insertion is detected, the process proceeds to step 2. If not detected, this state is held.

Step 2 (S2): The loaded tape cassette C is moved to the cassette loading section 12, and if loading is detected, step
If not detected, the process returns to step S1 to wait for the insertion of the tape cassette C.

Step 3 (S3): The start end of the magnetic tape T is detected through the sensor 34. If the start end is detected here, the process proceeds to step 4, and if not detected, the process proceeds to step 5.

Step 4 (S4): Here, the end end (TE) of the magnetic tape T is detected through the sensor 35. If the end end of the magnetic tape T is detected here, the process returns to step 1 and the tape Wait for insertion of cassette C. That is, cassette loading is detected in step 2, and steps 3 and 4 are performed.
In this case, the fact that the sensors 34 and 35 both detect the tape end (transparent part) means that the magnetic tape is not loaded in the proper position or the tape is not present. Will return to step 1 again. On the other hand, if the end portion of the magnetic tape T is not detected here, it means that the presence of the magnetic tape is confirmed.
Go to step 6.

Step 5 (S5): Here, it is detected whether or not the magnetic tape of the loaded cassette is the end end, and if the end end of the magnetic tape T is detected here, the step is executed.
Proceeding to step 16, the tape pull-out reel switching operation which is the feature of the present invention is performed. On the other hand, if the end portion of the magnetic tape T is not detected here, the process proceeds to step 6 as in step 5, and the normal loading operation is started.

Step 6 (S6): The tape loading operation is started. First, the braking state of the brake mechanism section 19 by the solenoid 26 is temporarily released. Then, it proceeds to step 7.

Step 7 (S7): The motor 39 attached to the take-up reel stand 11 is electrically braked to bring it into a braking state, and the motor 38 attached to the supply reel stand 10
Is in a free rotation state. This allows the magnetic tape T to be pulled out from the supply-side reel stand 10 (shown in FIG. 4 (B)). Then, the process proceeds to Step 8.

Step 8 (S8): The loading motor 50 is rotationally driven to slide the loading bases 13 and 14 to start loading. Then, it proceeds to step 9.

Step 9 (S9): Here, it is monitored whether the end end (TE) of the magnetic tape T is detected during loading,
If the end end is detected here, the process proceeds to step 12, and the process proceeds from step 12 to step 16 where the tape is pulled out and the reel table is switched. If the end edge is not detected here, the process proceeds to step 10. That is, the tape loading operation is continued.

Step 10 (S10): When the end end of the tape is not detected, the tape loading operation is continued, where it is monitored whether or not it is the stop mode (tape loading completed state).
The tape loading ends at 11 (S11).

Step 12 (S12): This step moves when the end end of the tape is detected during tape loading. In this case, first, the rotation of the loading motor 50 is stopped during tape loading, and then step 13 is performed. move on.

Step 13 (S13): The motors 38, 39 are electrically braked to brake both reel stands 10, 11, and the process proceeds to step 14.

Step 14 (S14): The brake mechanisms 19 stop the reel stands 10 and 11. Then proceed to step 15,
The input standby state, that is, the transition standby state to step 16 is entered.

Step 16 (S16): This step moves from Step 15 when the loaded cassette has already detected the end of the tape, or when the end of the tape has been detected during tape loading. is there. In this step, first, the solenoid 26 is energized to release the stopped state of the brake mechanism unit 19, and the process proceeds to Step 17.

Step 17 (S17): The motor 38 of the supply reel stand 10 is electrically braked to bring it into a braking state, and the motor 39 of the take-up reel stand 11 is released from the braking state to be in a free rotation state. As a result, the reel stand from which the magnetic tape is drawn is switched from the supply-side reel stand 10 to the take-up reel stand 11. Then, it proceeds to step 18.

Step 18 (S18): The loading motor 50 is driven to pull out the magnetic tape T from the take-up reel stand 11. Then, it proceeds to step 19.

Step 19 (S19): It is judged whether or not it is the stop mode (loading completed state), and if it is the stop mode here, the routine proceeds to step 11 above. If it is not the stop mode, this determination state is held.

In the above-described embodiment, it is not necessary to consider the length of the magnetic tape T to be rewound each time, and it is sufficient to switch the braking state of the reel base for feeding the magnetic tape T and pull out the magnetic tape. . Therefore, only the program needs to be changed without changing the conventional mechanical configuration. Further, the loading time can be shortened by the time required to rewind the magnetic tape T, and the magnetic tape T can be completed in a short time.

Note that the present invention is not limited to the above embodiment,
Various modifications can be made within the scope of the gist.

The loading means has been shown to switch the braking state immediately when the start end or the end end of the magnetic tape is detected, but by detecting either one of the ends,
The loading mechanism may be moved in a direction in which the tension of the magnetic tape being loaded decreases.
That is, the loading mechanism is temporarily retracted to the tape reel side, braking of the reel base is switched, and then loading is restarted. In this case, in addition to the effects obtained in the above-described embodiment, it is possible to avoid fluctuations in tension applied to the magnetic tape and prevent deterioration of data recording / reproducing performance due to elongation of the magnetic tape itself.

[Effects of the Invention] According to the present invention described in detail above, it is possible to provide a tape player that has a simple structure and can complete loading in a short time even when the end of the magnetic tape is detected during loading. it can.

[Brief description of the drawings]

FIG. 1 is a top view showing a mechanical structure of a tape player as one embodiment, FIG. 2 is a block diagram showing an electric structure of the tape player shown in FIG. 1, and FIG. 3 is a flowchart showing a loading operation. 4 (A) to 4 (C) are schematic explanatory views showing the loading state of the magnetic tape,
FIG. 5 is a top view showing the schematic structure of the tape player, and FIG.
FIGS. 9A to 9C are explanatory views showing a state where the magnetic tape is loaded from the tape cassette. 10, 11 ...... Reel stand, 17 ...... Rotating head, 29 ...... Braking means, 34, 35 ...... Sensor, 33a ...... Detection means, 33b ...... Loading means, 46 ...... Loading mechanism, C ...... Tape cassette , T ... Magnetic tape.

Claims (2)

(57) [Claims] 1. A pair of reel stands on which tape reels are installed, braking means for braking each reel stand, a tape loading mechanism for pulling out a magnetic tape from the tape reel and winding it around a rotary head, and an end of the magnetic tape. And a sensor for detecting a portion of the magnetic tape. When the magnetic tape is pulled out by the tape loading mechanism, a braking force is applied to one reel base by the braking means and the magnetic tape is pulled out from the other tape reel, and the magnetic tape is pulled by the sensor. A tape loading device for a tape player, characterized in that a control means is provided for releasing the braking force applied to the one reel stand by the braking means when the end portion of the tape is detected. 2. The control means temporarily moves the tape loading mechanism in the direction in which the magnetic tape is loosened when the end of the magnetic tape is detected by the sensor while the magnetic tape is being drawn out, and applies a braking force to one reel stand. The tape loading device of the tape player according to claim 1, wherein the tape loading is restarted after the release.