JPH0435824B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic recording/reproducing device using a rotating magnetic head such as a video tape recorder, and more specifically, to a rotating drum incorporating a rotating magnetic head. Guide the magnetic tape inside,
This invention relates to a magnetic recording and reproducing device in which a movable tape guide device for loading and unloading a tape cassette and a tape cassette loading and unloading device are organically combined.

[Conventional technology]

An overview of a general magnetic recording/reproducing device of this type will be explained with reference to FIGS. 15 and 16. FIG. 15 is a plan view, and FIG. 16 is a front view of FIG. 15. In the figure, reference numeral 1 denotes a substrate, which is made of, for example, die-casting and has a box-like structure, on which a main magnetic tape running system including a rotating drum 2 is disposed. A pair of inlet and outlet movable tape guides 3 and 4 are arranged on the substrate 1, and the magnetic tape 5a is pulled out from the tape cassette 5 and moved to and fixed at the inlet and outlet stoppers 6 and 7. A magnetic tape running system is obtained. The tape cassette 5 has a notch 5b for engaging the inlet and outlet movable tape guides 3, 4, and also contains supply and take-up reels 5c, 5d. It also has a transparent part 5e on its upper outer surface, and has an internal magnetic tape 5e.
It is designed so that the amount of data a can be seen, and also has a label portion 5f on the top surface to indicate the recorded content. Further, the front face portion thereof has a front label portion 5g, which indicates the type of magnetic tape 5a and the recorded content. It also has an erroneous erasure prevention tab 5h, and is structured such that re-recording is prohibited by removing this tab 5h.

An outline of a conventional magnetic recording/reproducing device will be explained with reference to FIGS. 17 and 18. FIG. 17 is an overall perspective view, and FIG. 18 is a schematic sectional view taken along the line - in FIG. 17. In the figure, reference numeral 8 denotes a main body of the magnetic recording/reproducing apparatus, which has a tape cassette entrance/exit 9 on its front side. Tape cassette 5 is indicated by an imaginary line A
It is inserted into the main body 8 of the apparatus from the position shown in FIG. Although a detailed explanation of this mechanism will be omitted, it is described in detail in, for example, Japanese Patent Laid-Open No. 57-27461.

[Problem that the invention seeks to solve]

In the above-mentioned conventional magnetic recording/reproducing apparatus, not only does the mechanism of the tape cassette loading/unloading device become complicated, but also after loading the tape cassette 5 into the main body 8 of the apparatus, the tape cassette is moved as shown in position B in FIG. 5 enters inside the main body 8 of the apparatus, the state of the tape cassette 5 cannot be visually checked from the outside. Therefore, the state of the magnetic tape 5a and the label portion 5f, The problem was that I couldn't see 5g and it was not easy to use.

This invention has been made to solve this problem, and allows easy-to-use magnetic recording by simply inserting the tape cassette from the front of the device and making it possible to visually confirm the loaded tape cassette from the outside. The purpose is to obtain a playback device.

[Means for solving problems]

A magnetic recording/reproducing device according to the present invention includes: a speed reduction device provided on a substrate and forming a speed reduction section of a drive device; a rotating disk forming a final stage of this speed reduction device;
A drive roller provided on this rotary disk, a cassette house movably installed in the tape cassette loading/unloading device and holding the tape cassette, and a distal end of the cassette house engaged with the cassette house and a proximal end rotatable to the main body of the device. a drive link supported by the drive roller and having an intermediate portion engaged with the drive roller; a drive gear that rotates integrally with the rotating disk and has a partially toothed profile; and a drive gear that selectively meshes with the drive gear. The device includes a pinion provided on the substrate and a gear meshing with the pinion and provided on the main body of the device.

[Effect]

In this invention, when a tape cassette is inserted into the cassette house and the drive device is driven,
The rotation of the rotary disk moves the drive link via the drive roller, and the cassette house is moved to a predetermined position in the tape cassette loading/unloading device.Following this, the rotation of the rotary disk drives the pinion and moves it along the gear. Then, the board was moved and the magnetic tape inside the tape cassette could be pulled out to a loaded state.The loaded state of the tape cassette could then be visually confirmed from the outside by simply inserting the tape cassette from the front of the device. Become.

[Embodiments of the invention]

An embodiment of this invention will be described below with reference to FIGS. 1 to 14.
The diagram will be explained. Fig. 1 is a perspective view of the whole, Fig. 2 is a schematic sectional view along the line - of Fig. 1, Fig. 3 is a plan view showing the main parts of the whole, Fig. 4 is a front view of Fig. 3, and Fig. 5 The figure is a cross-sectional view taken along the line - of figure 4, line 6.
The figure is a sectional view taken along the line - in Fig. 4, Figure 7 is a sectional view taken along the line - The state diagram is the same as FIG. 7, FIG. 9 is a diagram showing the state in which the substrate has moved and is the same as FIG. 7, FIG. 10 is a sectional view taken along the line - in FIG. 9, and FIG. 12 is a partially enlarged view of FIG. 8, FIG. 13 is a diagram showing the substrate in the middle of movement and is the same as FIG. 12, and FIG. 14 is a partially enlarged view of FIG. 9. , parts that are the same as those of the above-mentioned conventional device are given the same reference numerals, and explanations thereof will be omitted.

The outline of the magnetic recording/reproducing device of this invention is shown in FIG.
FIG. 2 will be explained. In the figure, 8A is the main body of the magnetic recording/reproducing apparatus, which has a tape cassette entrance/exit 9A at the upper front thereof. By simply inserting the tape cassette 5 from the front, the entire board 1A is moved from below. That is,
As shown in FIG. 2, the substrate 1A is moved by the center of rotation 10 from the imaginary line position to the solid line position and engaged with the tape cassette 5. When the tape cassette 5 is inserted into the main body 8A of the apparatus, the board 1A escapes downward as shown by the imaginary line, and then moves upward as shown by the solid line to engage with the tape cassette 5.

Next, the structure of the tape cassette loading/unloading device will be explained. Mainly in FIGS. 4 and 7, 11 is a chassis, which is a basic component of the mechanism and is an assembly of parts without moving parts that is integrated with the main body 8A of the device. Therefore, the assembly consists of a plurality of parts. Reference numeral 12 denotes a cassette house, which is configured to accommodate the tape cassette 5 inside. When the tape cassette 5 is inserted in the direction of arrow D in FIG. 7, the tape cassette 5 is set in the cassette house 12 with its upper surface clamped by the presser metal fitting 13. After this, the cassette house 12 holds the tape cassette 5 and the presser metal fitting 13.
As an integrated tape cassette loading and unloading device, the tape cassette is automatically moved further in the D direction by a drive device, and the state in which it is moved in this manner is shown, for example, in FIG. 3, and its mechanism will be described later. The cassette house 12 is designed to mainly clamp the peripheral part of the tape cassette 5, and as shown in FIG. 3, the transparent part 5e and the upper label part 5f of the tape cassette 5 are shaped so that they can be inspected from above. . Further, the outer periphery of the cassette house 12 is restrained by the guide portion 11a of the chassis 11, and the integrated tape cassette loading/unloading devices 5, 12, 13 are connected to the arrow D.
It is designed to be able to move in any direction.

Next, the structure of the drive device will be explained. Mainly the 7th
10, the drive motor 14, small pulley 15, large pulley 16, belt 17, worm 18, worm wheel 19, drive shaft 20, drive gear 21, drive roller 22, pinion 23, and pinion shaft 24 are connected to the substrate 1A. It is installed on top and operates as one. That is, the rotational force of the drive motor 14 constituted by a reversible rotary motor is transmitted to the worm 18 by a belt 17 placed between a small pulley 15 and a large pulley 16 fixed to the rotation shaft of the drive motor 14, and rotates the worm wheel 19. let The worm wheel 19 is rotatably supported by a drive shaft 20 whose one end is fixed to the substrate 1A and acts as a rotating disk, and a drive gear 21 is coaxially fixed to the worm wheel 19 so as to rotate as a unit. Reference numeral 22 denotes a drive roller, which is arranged on the worm wheel 19 and configured to be rotatable around its outer circumference. The drive gear 21 is a fan-shaped gear that partially has a tooth profile. The positional relationship between the driving gear 21 and the driving roller 22 is important, and the details will be described later. 23
is a pinion, and two pinions are integrally connected to the pinion shaft 24 which is rotatably supported on the base plate 1A.
The pinions 23 disposed on both sides of the drive gear 21 are selectively engaged with the drive gear 21 to transmit rotational force. Reference numeral 11b denotes an internal gear portion integrally provided on the chassis 11, which has a large inner radius and thus has a substantially rack-like shape, and is disposed at two locations so as to mesh with the pinion 23 at all times. 25 is a drive link whose base end is fixed to a link shaft. Two driving links 25 are arranged in a positional relationship such that the board 1A is sandwiched therebetween, and each is fixed to a link shaft 26. The link shaft 26 is rotatably supported by a link support hole 11c provided in the chassis 11. A pin engaging portion 25a is provided at the tip of the drive link 25. This pin engaging portion 25
A pin 12a extending from the cassette house 12 in the direction of both wings is engaged with the pin 12a, which is formed into a long hole shape so as to transmit driving force to the cassette house 12. The pin 12a passes through a long hole 11d provided in the chassis 11, and is adapted to be given a moving force in the direction of arrow D shown in FIG. Furthermore, an L-shaped hole 25b is provided in the middle portion of the drive link 25. This L-shaped hole 25b engages with the drive roller 22 and transmits the driving force of the worm wheel 19 to the drive link 25. Although two drive links 25 are provided symmetrically,
The other drive link 25 has this L-shaped hole 25b.
is not necessarily required. Further, the drive link 25 is provided with a U-shaped curved portion 25c. By engaging the drive shaft 20 with this curved portion 25c, its movement is prevented. Since the drive shaft 20 is integrated with the substrate 1A, it serves to prevent vertical movement of the substrate 1A when engaged. Two symmetrically provided drive links 2
Although it is not necessarily necessary to provide the curved portion 25c on the other side of the substrate 1A, if the curved portion 25c maintains the same relative position with respect to the drive shaft 20, the vertical movement of the substrate 1A can be more stably prevented. I can do it.
Further, the chassis 11 is provided with rotation support portions 11e (two locations in the figure). Rotating member 27 (two locations in the figure) attached integrally to the board 1A
One end is rotatably supported by the rotary support portion 11e, and is rotatable in the direction of arrow E in FIG. Movement is blocked. When the tape cassette 5 is inserted in the direction of arrow D to the position shown in FIG. Rotate to. When the drive gear 21 rotates together with the worm wheel 19 in the direction of arrow F, the drive roller 22 that engages with the L-shaped hole 25b of the drive link 25 also rotates, giving rotational force to the drive link 25. As a result, the pin 12a of the cassette house 12 moves in the direction of arrow G, and the tape cassette 5 is integrated.
also moves in the same way. The state in which the tape cassette loading/unloading devices 5, 12, and 13 have completed their movement in the direction of arrow G, that is, in the horizontal direction, is shown in FIGS. 8 and 12. In this state, tape cassette 5
has completed its horizontal movement to the required position. That is, the tape cassette 5 is automatically inserted and moved from the state shown in FIG. 7 to the state shown in FIG. In the states shown in FIGS. 8 and 12, the drive gear 21 and pinion 23 begin to mesh, and the rotational force of the drive gear 21, that is, the worm wheel 19, is transferred to the pinion 23.
This is a state in which the information has begun to be transmitted to the 3rd generation. That is, the pinion 23 starts rotating in the direction of arrow H in the figure, and the drive gear 21 continues to rotate in the direction of arrow F. Then, as shown in FIG. 13, the pinion 23 is
The integrated substrate 1A also rotates and moves in a direction approaching the tape cassette 5. At this time, the drive roller 22 engaged in the L-shaped hole 25b of the drive link 25 moves to approximately the position shown in the figure due to the rotation of the drive gear 21 and the rotation of the substrate 1A. At this time, the tape cassette 5 is set at a predetermined position by engagement of the cam portion 25d provided on the drive link 25 and the drive shaft 20. Further, FIGS. 9 and 14 show a state in which the drive gear 21 continues to rotate and is stopped by a sensor (not shown). At this time, board 1
A and the tape cassette 5 are engaged in the required relative relationship, and the parts necessary for running the magnetic tape, including the inlet and outlet tape guides 3 and 4, are engaged with the tape cassette 5 and the magnetic tape 5a is pulled out. You will be able to obtain that running system. At this time,
As shown in FIG. 14, the drive roller 22 is located in a concave portion at one end of the L-shaped hole 25b and functions to lock the movement of the entire rotating section including the substrate 1A. Therefore, the engagement relationship between the tape cassette 5 and the substrate 1A including the magnetic tape running system can be strengthened. A state in which the substrate 1A and the tape cassette 5 are thus engaged, that is, a state in which the tape cassette 5 is loaded into the main body 8A of the apparatus, is shown in FIGS. 1 to 3. In this loaded state, the state of the tape cassette 5 can be visually confirmed from the outside as shown in the figure. From this state, the movable tape guide device moves the inlet and outlet movable tape guides 3 and 4 to the inlet and outlet stoppers 6 and 7, thereby removing the magnetic tape 5 from the tape cassette 5.
A can be extracted to obtain its magnetic tape running system. A detailed explanation of the drive mechanism for this purpose will be omitted, but it can be achieved, for example, by extracting the rotational force of the drive motor 14 using a clutch mechanism (not shown) and using it as a rotational drive source.

Next, when taking out the tape cassette 5 from the tape cassette loading/unloading device, the drive motor 14, which is a reversible rotary motor, is rotated in the opposite direction to the aforementioned direction, thereby moving the tape cassette 5 in the opposite direction. It can be taken out from the device main body 8A.

As detailed above, the tape cassette 5 is moved inside by simply pushing the tape cassette 5 into the tape cassette loading/unloading device 5, 12, 13, and then the magnetic tape running system including the movable tape guide device is moved to the board. Since the magnetic tape 5a is pulled out after being moved and engaged by the tape cassette 1A, the desired magnetic recording and reproduction can be performed while the tape cassette 5 is held in the mounting position. Therefore, the simple mechanism requires only one simple operation, and since the tape cassette 5 does not move inward from the mounting position, the front and top surfaces of the tape cassette 5 can be seen from the outside.

In the above embodiment, the worm 18 is used as a speed reduction device.
Although a gear mechanism with a worm wheel 19 was used,
Other gear systems such as spur gears or planetary gears may also be used, as long as a rotating disk that rotates at a low speed can be obtained.

In addition to the tape cassette 5 shown in the drawings, it may be a tape cassette with a different structure from that shown in the drawings or a tape cassette for digital audio (DAT), as long as the magnetic tape can be pulled out from the cassette case. good.

〔Effect of the invention〕

As described above, according to the present invention, the loaded state of the tape cassette can be visually recognized from the outside by simply inserting the tape cassette from the front of the device, thereby providing an easy-to-use device.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view showing one embodiment of the present invention, Fig. 2 is a schematic cross-sectional view taken along the line - in Fig. 1, Fig. 3 is a plan view showing the main parts of the whole, and Fig. 4 is an overall perspective view showing an embodiment of the present invention. 3
Figure 5 is a sectional view taken along line - in Figure 4, Figure 6 is a sectional view taken along line - in Figure 4, and Figure 7 is a sectional view taken along line - in Figure 6. Figure 8 shows the state immediately after insertion; Figure 8 is the same diagram as Figure 7 when the tape cassette has finished moving horizontally; Figure 9 is the same diagram as Figure 7 and shows the board has moved. , FIG. 10 is a sectional view taken along the line - in FIG. 9, FIG. 11 is a partially enlarged view of FIG. 7, FIG. 12 is a partially enlarged view of FIG. The same figure as Figure 12, Figure 14 is the same as Figure 9.
15 is a plan view showing an outline of the conventional device, FIG. 16 is a front view of FIG. 15, and 17 is a partially enlarged view of the figure.
The figure is an overall perspective view of a conventional device, and FIG. 18 is a schematic sectional view taken along the line - in FIG. 17. In the figure, 1A is a substrate, 2 is a rotating drum,
3 and 4 are tape guides, 5 is a tape cassette, 5
11 is a chassis, 11b is a gear, 12 is a cassette house, 5, 12, 13 is a tape cassette loading/unloading device, 19 is a rotating disk, 21 is a drive gear. , 22 is a drive roller, 23 is a pinion,
14 to 24 are drive devices, 18 and 19 are reduction gears,
25 is a drive link. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A magnetic recording and reproducing device that pulls out and winds a magnetic tape in a tape cassette around a rotating drum equipped with a magnetic head, which horizontally moves the device body including at least a component chassis and the tape cassette. The tape cassette loading/unloading device comprises a tape cassette loading/unloading device, a magnetic tape running system, and a board on which a movable tape guide device is arranged, and the board is moved by a drive device to engage the tape cassette mounted on the tape cassette loading/unloading device. In the magnetic recording and reproducing device, the magnetic recording and reproducing device includes: a speed reduction device provided on the substrate and forming a speed reduction section of the drive device, a rotating disk forming a final stage of this speed reduction device, and a drive roller provided on the rotating disk. a cassette house which is movably installed in the tape cassette loading/unloading device and holds the tape cassette; A drive link with which the drive roller is engaged, a drive gear that rotates integrally with the rotating disk and has a partially formed tooth profile, a pinion that selectively meshes with the drive gear and is provided on the base plate, and the pinion. When the tape cassette is inserted into the cassette house and the drive unit is driven, the drive link is moved through the drive roller by the rotation of the rotating disk. The cassette house is moved to a predetermined position of the tape cassette loading/unloading device, and the pinion is driven by the rotation of the rotary disk to move the substrate along the gear, and the tape is moved to a predetermined position. A magnetic recording and reproducing device characterized in that the magnetic tape in the cassette can be pulled out.