JPH0462144B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a loading device for a rotary head type tape recorder which is also equipped with a brake mechanism for preventing tape from loosening.

BACKGROUND TECHNOLOGY AND PROBLEMS In a general tape recorder, a take-up hub and a A brake device is usually provided to stop the supply hub, to prevent loose and stretched tape from becoming entangled with surrounding shafts or caught on surrounding members when the tape cassette is attached or removed.

For example, a loading device of the so-called M loading system, which is commonly used in conventional tape recorders, is equipped with a brake device and a loading device as separate devices.

This uses a helical scan method for recording and playback, so in order to load the tape obliquely into the rotary head device, an inclined guide must be used and the tape path must be long and circuitous to prevent the tape from twisting. Must be.

In this way, a loading device that is equipped with an inclined guide and operates in a complicated manner to set the tape path has a complicated mechanism, larger size, and increased weight. do not have. Furthermore, adding this force to the drive device that drives the heavy loading device makes it difficult to set enough force to drive the brake device.

Therefore, the brake device and the loading device are installed separately, and during unloading, the timing of applying the brake is controlled by the control device so that the brake device is activated.

For this reason, conventional tape recorders are equipped with a loading device and a brake device separately.
Furthermore, it is necessary to provide a control device that operates the brake system in a well-related manner.
The disadvantage was that the entire tape recorder became larger.

OBJECTS OF THE INVENTION The present invention improves the conventional means of obliquely loading a tape onto a rotary head device, and provides a plane in which the longitudinal centerline of the magnetic tape loaded onto the rotary head device lies on the same imaginary plane. A loading device for a tape recorder in which a brake mechanism is attached to the loading device in a helical scan tape recorder in which a typical tape path is set, the configuration and operation of which are simplified, and the brake mechanism operates quickly and reliably. The purpose is to provide

SUMMARY OF THE INVENTION The present invention corresponds to a rotary head device, and in a tape recorder comprising a tape path in which the longitudinal center line of the magnetic tape loaded into the device is located on the same virtual plane, the tape recorder includes:
A loading lever having at least two guide posts is arranged so that the guide posts can move toward and away from the rotary head device, and
The loading lever is equipped with a brake mechanism that corresponds to the reel cradle on the supply side and take-up side.
The reciprocating operation of the loading lever causes the magnetic tape wound around the guide post to be loaded and unloaded from the rotary head device, and the reel cradle is braked by the reciprocating movement of the loading lever during unloading of the magnetic tape. It is characterized in that it operates.

Embodiment Hereinafter, an embodiment of a loading device for a tape recorder according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a perspective view schematically showing a tape path when a tape is loaded onto a rotary head device using the tape recorder loading device of this embodiment.
1 is a rotating head device, and 2 is a tape.

In this embodiment, the tape 2 passes through the center of the width of the tape 2 wound around the rotary head device 1 and starts wrapping at the inlet side of the rotary head device 1 (the side where the tape starts winding), and the tape 2
It passes through the center of the width of the tape 2 at the outlet side of the rotary head device 1 (the side where the tape ends) so that the surface perpendicular to the plane formed by the finished tape 2 is placed on the same plane.

For this reason, the rotating shaft 3a of the hub 3 of the tape supply reel, which forms the tape path, the center shafts 4a, 4a of the guide posts 4, 4 of the pair of loading guides, the rotating shaft 5a of the pinch roller 5, and The rotating shaft 6a of the capstan 6, the rotating shaft 7a of the hub 7 of the tape take-up reel, and the axes of other tape guides and the like are all parallel to each other. In addition, the rotating shaft 1a of the rotating head device 1 is also made parallel to the axes set parallel to each other, and the tape guide drum of the rotating head device 1 is formed into a cylindrical surface concentric with the rotating shaft, A plane in which the center 8 of the width of the tape 2 loaded on the rotary head device 1, indicated by a continuous two-dot chain line on a predetermined tape path, rests on a certain imaginary plane 9 perpendicular to the side surface of the tape 2. A tape path has been set.

Such a planar tape path is ideal for running the tape 2, as uniform tension is applied to each point of the virtual cross section in the width direction of the tape 2 running along this tape path. be.

In addition, in this embodiment, in order to perform helical scan recording and reproduction on the tape 2 running on a planar tape path, the magnetic head of the rotary head device 1 moves obliquely with the rotation of the rotary drum to write the tape onto the tape. Use a device configured to scan.

Such a rotary head device 1 has been proposed in the past. For example, a rotary drum equipped with a magnetic head is rotated by a cam mechanism while being moved up and down in the thrust direction of the rotary shaft 1a, and relatively magnetically generated. A device that rotates the head diagonally or the like is used.

FIG. 2 is a plan view showing the outline of this embodiment.
0 is a loading device, and this loading device 10 loads the tape onto the rotary head device 1 in a planar tape path.

In FIG. 3, which shows a perspective view of the loading device 10, reference numeral 11 is a loading lever, and a linear guide groove 12 is formed in a trapezoidal head and a support plate extending integrally from the loading lever. Become.

A pair of cylindrical guide posts 4, 4 are provided at both corners of the front surface of the loading lever 11.
erected.

A brake mechanism is integrally attached to the loading lever 11 configured as described above. For this reason,
The center portions of a pair of left and right brake levers 14, 14 are pivotally attached to the base plate side of the head of the loading lever 11 with shaft pins 15, 15, respectively. The pair of brake levers 14, 14 are bent into a dogleg shape in a plan view and are symmetrical to each other. A brake shoe 16, 16 is attached to the free end of each brake lever 14, 14, respectively. It should be noted that a thick felt cloth, a piece of rubber, or the like is attached to the contact portion of the brake shoe 16 to enhance the braking effect.

The other end of each brake lever 14, 14 is bent into an L-shaped cross section and raised up, and a shaft hole is bored in the center of each raised plate piece 17, 17. .

Then, a bolt 18 is loosely fitted into the shaft hole of one plate piece 17, a compression coil spring 19, which is an elastic body, is inserted into this bolt 18, and the tip of the bolt 18 is inserted into the shaft hole of the other plate piece 17. Loosely fit the bolt 1
Screw the nut 20 onto the threaded end of No. 8 and secure it.

As shown in FIG. 2, the loading device 10 portion configured in this way is constructed by passing a lever guide 21, which is a guide pin provided upright on a mechanical chassis, etc., through the guide groove 12 of the loading lever, so that the loading device 10 as shown in FIG. It is mounted so that it can reciprocate in the linear direction shown by arrow A using a drive device that does not have a

Further, the tape recorder of this embodiment uses a tape cassette having a rectangular cutout 13 in the front opening, and when this tape cassette is set in the tape recorder, a pair of guide pins 4, 4 are inserted. The pinch roller 5 is inserted into a notch 13 on the back side of the tape 2 stretched across the front opening of the tape cassette.

Next, the operation of the loading device equipped with a brake mechanism of this embodiment will be explained. The loading device 10, which has been lowered to the position shown by the solid line in FIG. It is in a state where rotation of the hub 3 and the hub 7 of the tape take-up reel is suppressed.

In this state, a brake mechanism is attached to each transmission gear 23, 23, which is a transmission wheel fixed coaxially to each reel shaft 22, 22 for rotationally driving the hub 3 of the tape supply reel or the hub 7 of the take-up reel. The respective brake shoes 16, 16 come into pressure contact with each other.

By pulling down the loading lever 11 to a predetermined position, the brake shoes 16, 16 of each brake lever are
The brake levers 14, 14 are then rotated in the direction indicated by the arrow B or C, respectively. Then, the plate pieces 17, 17 of each brake lever 14, 14 move toward each other in the axial direction of the bolt 18 loosely fitted therein. However, since a compression coil spring 19 is inserted into this bolt 18, the repulsive force of the compression coil spring 19 compressed from both ends can prevent the brake levers 14, 14 from rotating outward, that is, Each brake shoe 16, 16 acts as a rotational moment in the direction opposite to arrow B or C.
is brought into pressure contact with each transmission gear 23, 23, and ultimately stops each transmission gear 23, 23, so that the hubs 3, 7 of each reel around which the tape is wound spin idly and the tape loosens. It turns out.

Next, when loading the tape 2 onto the rotary head device 1, the loading lever 11 is moved forward in the direction of arrow A by a drive device (not shown).
The loading device 10 is brought to the position shown by the dashed line.

In this state, the brake shoes 16, 16 of each brake lever are separated from each transmission gear 23, 23, and each bolt 18 is loosely fitted into each plate piece 17, 17 and has a compression coil spring 19 inserted therebetween. The plate pieces 17, 17 are stabilized so as not to be separated by more than a certain distance.

Further, the tape 2 is wound around the rotary head device 1 by a pair of guide posts 4, and the tape 2 is wound around the erasing head 24.
and is loaded into an auxiliary head (CTL head, etc.) 25. In addition, when recording and playing back the tape recorder, the tape 2 loaded as described above is
is driven at a constant speed by a pinch roller 5 that swings from an unused position shown by a solid line to a used position shown by a chain line, and a capstan 6, and an idler gear 29 that is interlocked with the drive gear 28 of the motor during fast forwarding or rewinding. swings in the direction of arrow D and selectively meshes with each of the transmission gears 23, 23 on the supply reel side or take-up reel side to transmit the driving force for running the tape.

In addition, the transition operation between the tape loading state and the unloading state requires only the reciprocating movement of the loading lever 11, and the brake mechanism can be automatically operated or released accordingly. No special equipment is required to control the mechanism.

Effects of the Invention As detailed above, the loading device for a tape recorder of the present invention loads the tape in a planar tape path, and the loading device is integrally equipped with a brake mechanism. There is no need for a special device for controlling the timing of the operation of the device, and the overall structure of the device can be simplified and made more compact, thereby providing an inexpensive product.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing a tape path in a loading device for a tape recorder according to the present invention;
FIG. 2 is a plan view showing an outline of the apparatus of the present invention, and FIG. 3 is a perspective view showing a portion of the loading device. In the figure, 1 is a rotary head device, 2 is a tape, 4, 4
is a guide post, 10 is a loading device, 11
14 is a loading lever, and 14 is a brake lever.

Claims (1)

[Claims] 1. In a tape recorder that is compatible with a rotary head device and is equipped with a tape path in which the longitudinal centerline of the magnetic tape loaded into the device is located on the same virtual plane, at least two guides are provided in the tape path. A loading lever having a post is arranged so that the guide post can move back and forth toward and away from the rotary head device, and the loading lever corresponds to a reel holder on a supply side and a take-up side. The magnetic tape wound around the guide post is loaded and unloaded with respect to the rotary head device by reciprocating operation of the loading lever, and the magnetic tape is loaded and unloaded from the rotary head device when the magnetic tape is unloaded. A loading device for a tape recorder, characterized in that the braking mechanism is actuated for the reel pedestal as the deing lever moves back.