JPH06349166A - Tape take-out device for recording and reproducing device - Google Patents

Abstract

PURPOSE:To simply and rapidly take out a magnetic tape manually without flawing it in case of emergency such as a battery worn out under the loading state of the magnetic tape. CONSTITUTION:The tape take-out device 30 is provided between a loading motor 11 and a capstan motor 20. This tape take-out device 30 is equipped with an operating knob 31 to be meshed with a gear 23 of a capstan 21 at the time of lowering a moving plate 33 and a driven gear 37 to be meshed with a pinion gear 11c of the loading motor 11 via intermediate gears 35 meshed with this operating knob 31, etc. By this method, when the one operating knob 31 is manually rotated while depressing the knob, the loading motor 11 and the capstan motor 20 are rotated respectively at the same time, and the tape can simply and rapidly be taken out without flawing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape ejecting device of a recording / reproducing device which is most suitable for a portable VTR or the like.

[0002]

2. Description of the Related Art For example, in a VTR, the magnetic tape being loaded can be manually taken out by manually rotating the reel base in an emergency such as when the battery runs out while the magnetic tape is being loaded. There is known a tape ejecting device. This V
In the tape take-out device of TR, the loading motor for loading the magnetic tape onto the tape running path outside the tape cassette could not be easily rotated manually, so that there was a problem that taking out the magnetic tape took a very long time. It was

In order to solve the above-mentioned problems, an operating knob for manually rotating the loading motor is provided in the middle of the drive system of the loading motor, and the capstan motor capstan anti-output for driving the magnetic tape is provided. A tape take-out device has been developed in which an operating knob is also provided on the shaft side, and by manually operating each of these operating knobs, the magnetic tape can be taken up and taken out from the tape cassette. .

[0004]

However, in the conventional tape ejecting device of the VTR developed above, the operating knobs are separately provided both in the middle of the driving system of the loading motor and on the capstan side of the capstan motor. It is necessary to first rotate the operation knob on the loading motor side a little to loosen the magnetic tape, and then rotate the operation knob on the capstan motor side to wind the magnetic tape into the tape cassette. Therefore, the operation of taking out the magnetic tape was complicated. Also,
Since the operating knobs on both the loading motor side and the capstan motor side have to be manually rotated separately, there is a problem that it takes time to take out the magnetic tape and the tape is easily damaged.

Therefore, the present invention provides a tape ejecting device of a recording / reproducing device which can easily and quickly take out a tape in an emergency without manually damaging the tape.

[0006]

A capstan in which a swinging gear is meshed with a gear portion of one of the reel bases via a belt or the like in order to drive a tape in a cassette mounted on a pair of reel bases. In a tape take-out device of a recording / reproducing apparatus equipped with a motor and a loading motor for loading the tape onto a tape running path outside the cassette, the torque transmission means of the capstan motor and the torque transmission means of the loading motor are manually operated at the same time. An operating knob that can be rotated by is connected to and detached from each of the torque transmitting means.

[0007]

When the operating knob is manually rotated in an emergency such as when the battery runs out while the tape is being loaded, the loading motor and the capstan motor rotate simultaneously. This allows the tape to be removed easily and quickly without damage.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 3, reference numeral 1 is a portable VTR (video tape recorder) as a recording / reproducing apparatus,
The so-called M loading method is used. On the chassis 2 of the VTR 1, there is provided a rotary head drum 3 of a helical scan type which constitutes a tape traveling path. A pair of supply reel bases on which a supply reel 52 and a take-up reel 53 of a tape cassette 50 loaded by a cassette holder (not shown) that can be raised and lowered engage with each other at a position separated from the rotary head drum 3 on the chassis 2 by a predetermined distance. 4 and a take-up reel stand 5 are arranged respectively.

The magnetic tape 51 exposed from the front opening 50a of the tape cassette 50 is loaded by the loading mechanism 10 arranged around the rotary head drum 3 of the chassis 2.
As a result, the tape is loaded and unloaded from inside the tape cassette 50 to the M-loading tape running path around the rotary head drum 3.

The loading mechanism 10 includes a loading motor 11 mounted vertically on the chassis 2 via a base 6, and an output shaft 11a of the loading motor 11.
The gear train 12 for deceleration that meshes with the pinion gear 11b press-fitted to the lower side, the cam gear 13 that meshes with this gear train 12, and the pair of differences in which one is meshed with this cam gear 13 via the gear train 14. Cam gears 15, 15 meshing with
And a pair of sliders 18, 18 that reciprocate from each cam gear 15 through each link mechanism 16 along each guide rail 17, and a pair of tape guides 19a, 19b attached to each slider 18. Has been done.
A pinion gear (torque transmission means) 11c is press-fitted to the upper end side (counter output side) of the output shaft 11a of the loading motor 11.

A capstan motor 20 having a capstan 21 projecting vertically is attached to the chassis 2 on the M-loading tape running path between the rotary head drum 3 and the take-up reel stand 5. As shown in FIGS. 1 and 2, a pulley 22 is attached to the lower end side (output side) of the capstan 21 of the capstan motor 20 and a gear (torque) is attached to the upper end side (counter output side) of the capstan 21. Transmission means) 23 is press-fitted. A pulley 25 is rotatably supported on the chassis 2 between the pair of reel stands 4 and 5 via a support shaft 24. A timing belt 26 is wound between the pulley 25 and the pulley 22 of the capstan 21.

A swing plate 27 is swingably supported on the support shaft 24, and the swing gear 2 is attached to the swing plate 27.
Pin 8 is pivoted. The swing gear 28 meshes with a gear portion 25a integrally formed on the pulley 25, and of the torque limiter gears 29a, 29b meshing with the gear portions 4a, 5a of the reel bases 4, 5. It is designed to mesh with either one. For example, taking the case of running the magnetic tape 51 in the FWD direction as an example,
The magnetic tape 51 is driven by the capstan 21 and the pinch roller 7, and the swinging gear 28 is meshed with the gear portion 5a of the take-up reel stand 5 by the timing belt 26 so that the take-up reel stand 5 side (take-up reel 53) is provided. It is designed to be wound up. Further, the torque limiter gear 29b arranged on the take-up reel base 5 side is for taking up the tape without slack even if the tape winding diameter of the take-up reel 53 changes, because the rotation speed of the capstan 21 is constant. And
Torque limiter gear 29 arranged on the side of the supply reel stand 4
The item a is for winding the magnetic tape 51 on the supply reel 52 without slack. The magnetic tape 51
Loading and unloading are on the supply reel stand side 4
It is further fed out and wound up on the supply reel stand 4 side.

A tape take-out device 30 is provided between the loading motor 11 and the capstan motor 20. The tape take-out device 30 includes a disc-shaped gear portion 31a that meshes with the gear 23 of the capstan 21 and an operating knob 31 that includes an operating portion 31b having a substantially columnar shape with a non-slip notch on the outer peripheral surface. A movable plate 33 that rotatably supports the operation knob 31 by a shaft 32, and a movable plate 33 that is rotatably supported by a shaft 34, and a small-diameter gear portion 35a is attached to the gear portion 31a of the operation knob 31. The large-diameter gear portion 3 of the intermediate gear 35, which is rotatably supported by the moving plate 33 and the intermediate gear 35 meshing with the moving plate 33, through a shaft 36.
5b, a driven gear 37 that meshes with the upper pinion gear 11c of the loading motor 11 when the moving plate 33 descends, and a fixed plate that supports the moving plate 33 so that it can move up and down along the support column 38 in the vertical direction. 39, and a compression coil spring 40 interposed between the columns 38 to constantly urge the moving plate 33 upward.

As shown in FIG. 1, the moving plate 33 is normally lifted upward by the urging force of the compression coil spring 40. As a result, the pinion gear 11c of the loading motor 11 and the gear 23 of the capstan motor 20 are
The driven gear 37 rotatably supported by the moving plate 33 and the gear portion 31a of the operation knob 31 are separated from each other and are not in mesh with each other, and the gears 11c and 23 are independently rotatable. . Further, as shown in FIGS. 1 and 2, the fixing plate 39 is fixed to the base 8 standing upright from the chassis 2. Furthermore, the amount of downward movement of the moving plate 33 is determined by the cylinder 41 protruding from the lower surface side of the moving plate 33.
Is regulated by hitting the upper surface of the fixed plate 39.

The tape ejecting device 3 of the VTR 1 of the above embodiment
According to No. 0, when the magnetic tape 51 shown in FIG. 3 is loaded in the tape traveling path, the battery of the VTR runs out, or the capstan motor 20 or the like does not operate for some reason, in an emergency, With this tape take-out device 30, the magnetic tape 51 can be manually taken out easily and easily in a short time without a tool.

That is, in the case of the emergency, the tape ejecting device 30
1 against the urging force of the compression coil spring 40, the operating portion 31b of the operating knob 31 is pushed downward from the state shown in FIG. 1 to lower the moving plate 33. By lowering the moving plate 33,
As shown in FIG. 2, the gear portion 31 a of the operation knob 31 meshes with the gear 23 of the capstan motor 20, and the driven gear 37 serves as the pinion gear 1 of the loading motor 11.
Mesh with 1c. Then, the operation portion 31 of the operation knob 31
When b is manually rotated in a predetermined direction (for example, counterclockwise direction), the output knob 11a of the loading motor 11 is rotated by the rotation operation of the operation knob 31, the loading mechanism 10 is unloaded, and the unloading operation is performed. Thus, the magnetic tape 51 loosened is easily wound around the supply reel base 4 side by the rotation of the capstan 21 which rotates together with the rotation operation of the operation knob 31 (the magnetic tape 5).
1 can be wound up on the supply reel 52 and drawn into the tape cassette 50).

During the unloading operation of the loading mechanism 10, the magnetic tape 51 is wound more than the slack amount of the magnetic tape 51. The large winding amount of the magnetic tape 51 is absorbed by slipping of a limiter mechanism (not shown) of the torque limiter gear 29a. As a result, a constant tape tension is always applied without applying an undue load to the magnetic tape 51, and there is no tape damage due to the magnetic tape 51 being left behind when the magnetic tape 51 is taken out. Further, since the outer peripheral surface of the operation portion 31b of the operation knob 31 is provided with the anti-slip notch, the operation knob 31 can be surely manually rotated. Furthermore, by rotating one operation knob 31, the unloading operation of the loading mechanism 10 can be performed while winding the magnetic tape 51, so that the magnetic tape 51 can be taken out quickly and reliably in a short time.

According to the above-mentioned embodiment, the torque transmitting means of the loading motor and the capstan motor is composed of gears, but the torque transmitting means is not limited to the gears, but may be a pulley or the like. In addition, a portable VT as a recording / reproducing device
Although R has been described, it is needless to say that it can be applied to tape ejecting devices of various recording / reproducing devices, not limited to VTRs.

[0020]

As described above, according to the present invention, the operating knob for manually rotating the torque transmitting means of the capstan motor and the torque transmitting means of the loading motor simultaneously with respect to the torque transmitting means is provided. It is possible to rotate the loading motor and the capstan motor at the same time by manually rotating the one operating knob in an emergency such as when the battery runs out while the tape is being loaded. You can Thereby, the tape can be taken out easily and quickly without damaging the tape.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a tape ejecting device of a recording / reproducing device showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of when the tape is taken out by the tape taking-out device.

FIG. 3 is an overall configuration diagram of the recording / reproducing apparatus.

FIG. 4 is an explanatory diagram of a loading mechanism used in the recording / reproducing apparatus before loading (at the time of unloading).

FIG. 5 is an explanatory view of the loading mechanism during loading.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Recording / reproducing apparatus 4, 5 ... A pair of reel stand 4a, 5a ... Gear part 11 ... Loading motor 11c ... Pinion gear (torque transmission means) 20 ... Capstan motor 22 ... Pulley 23 ... Gear (torque transmission means) 26 ... Belt 28 ... Pivoting gear 30 ... Tape take-out device 31 ... Operation knob 50 ... Cassette 51 ... Tape

Claims (4)

[Claims] 1. A capstan motor for engaging a swinging gear with a gear part of one of the reel bases via a belt or the like for driving a tape in a cassette mounted on a pair of reel bases, and In a tape ejecting device of a recording / reproducing device equipped with a loading motor for loading a tape onto a tape running path outside a cassette, the torque transmitting means of the capstan motor and the torque transmitting means of the loading motor can be simultaneously rotated manually. A tape ejecting device for a recording / reproducing apparatus, wherein a simple operation knob is provided so as to be connectable to and detachable from each of the torque transmitting means. 2. The tape ejecting device of the recording / reproducing apparatus according to claim 1, wherein each of the torque transmitting means is constituted by a gear. 3. The tape ejecting device of the recording / reproducing apparatus according to claim 1, wherein a gear rotated by said operation knob is provided on the upper end side of the output shaft of said loading motor, and said tape is attached on the lower end side of said output shaft. A tape ejecting device for a recording / reproducing device, which is provided with a loading gear. 4. The tape ejecting device of the recording / reproducing apparatus according to claim 1, wherein a gear rotated by the operation knob is provided on an upper end side of the capstan of the capstan motor, and the belt is provided on a lower end side of the capstan. A tape ejecting device for a recording / reproducing device, which is provided with a pulley.