JPS6022765A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To simplify the assembling and control of a magnetic recording/reproducing device with a compact and lightweight structure, by changing the relative position between a cassette holder and a rotating base plate while revolving them together when the base plate is turned to load a cassette. CONSTITUTION:A rotating base plate 24 containing a cassette cover 38 is revolved on the basis of a shaft part 26a which is fitted into a rotating center hole 24c. A cassette holder 22 is also revolved and controlled by a guide plate for its back and forth positions. The holder 22 shifts relatively pins 22a and 22b so that slits 24a and 24b get further away from the part 26a while moving down. In this case, the relative shift range does not cover up to the opening parts of slits 24a and 24b. Therefore pins 22a and 22b are never removed from long holes 24a and 24b after the holder 22 is once set into the plate 30. Printed base boards 35a-35d are connected to each other by a flexible base plate 36 and can be set at the top plate part of the device main body. This can reduce greatly the size and weight of a magnetic recording/reproducing device.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to the field of industrial application.
Is it related to magnetic recording and reproducing devices such as players? ;hmm,.

Structure of conventional example and problems in A. Figures 1 to 3 show a conventional magnetic recording/reproducing device. This is the upper cover of the cassette holder 2. The link 4 has one end supported by a rotation shaft 4a of an angle 9 fixed to the chassis 8, and performs rotational movement. The cassette holder 2 is connected to the other end 4 of the link 4.
It is supported by a rotating wheel 4C provided at b. Therefore, after the cassette 6 is inserted into the cassette holder 2 in the state shown in FIG. 3, the cassette 6 rotates about the rotation shaft 4a until it is mounted in the state shown in FIG.

In the figure, 5 is an operation button, 7 is a cylinder, 10 is a capstan, and 11 is a cassette alignment boss.

By the way, recent magnetic recording/reproducing main units, especially VTRs, have become smaller and lighter, requiring compact stages, and development efforts have focused on making them thinner and smaller. ing. In the above situation, the link 4 performs a rotational movement, but it takes up a considerable space in the height direction, and there is a considerable distance from the rotation axis 4a at one end of the link 4 to the other end, and it cannot support the weight of the cullet 6. Therefore, it is necessary to make it 6 solid in terms of strength, and there is also a rotating shaft 4C necessary for left and right synchronization, which is a considerable burden in terms of weight and construction. Also, the magnetic 7- stored in the cassette 1-6
Due to the relationship between the locus of the rotational movement of the tape and the contact with the running system boss such as the capstan 10, the height of the rotation axis 4a must be approximately the same height as the tape center. Due to its structure, the crowd was an obstacle. Historically, since the radius of the rotational movement was large, the longitudinal position of the cassette 6 was very likely to vary, making it difficult to adjust the longitudinal position of the cassette 6.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to make the device smaller and lighter.

Structure of the Invention In order to achieve the above object, the magnetic recording and reproducing apparatus of the present invention includes a rotating base plate having a rotating support shaft at one end, and a force hit boulder held by the rotating base plate for inserting a cassette. and a cassette that causes the cassette holder to perform a rotational movement together with the rotational substrate and change its relative position with respect to the rotational substrate when the rotational substrate performs rotational movement for mounting the cassette. 1-A mounting device.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings (FIGS. 4 to 8). In the figure, 21 is the main body of the device, 2
Reference numeral 2 denotes a cassette holder, and pins 22a, 221) are fixed in parallel to each other at the upper ends of both sides thereof. 241 is a rotating board located above the cassette boulder 22,
Elongated hole portions 24a and 24b are formed on both sides thereof. The cassette holder 22 is assembled into the rotating board 24 by inserting the pins 2 from the openings of the elongated holes 24a and 24b.
This is done by inserting 2a and 22b. The rotation base plate 24 has a rotation center hole 24c, which is connected to the rotation center hole 24c.
- When connecting to the shaft portion 26a of the angle 26 on the seat 32,
Insert the pins 22c fixed to both sides of the cassette holder 22 connected to the rotation board 24 into the guide grooves 308 formed in the guide plate 30 on the chassis 17-32. The stopper 29, which can be rotated around the center, will be rotated in the counterclockwise t1 direction for the right-hand stopper 29, and in the clockwise direction for the left-hand stopper 29.
The cassette holder 22 can serve as a stopper for the pin 22c. In the figure, 23 is an operation button, 25 is a damper gear, 27 is a cassette damper, 2
8 is a spring, 31 is a rotating head cylinder, 33 is a reel stand, and 34 is a cassette 1 to . 35a to 35d are printed circuit boards, 36 is a flexible printed circuit board, 31 is a power supply section, and 38 is a bar attached to the upper part of the rotating board 24.

Next, the operation will be explained using FIGS. 7 and 8.

The cover 38 is attached to the rotating board 24.
rotates around the shaft portion 2Ga that fits into the co-moving center hole 24c. The cassette holder 22 moves in the same way, but is regulated by the front and rear devices by the guide plays 1 and 30. Therefore, when the /J knurling operation is performed to the state shown in FIG. 7, the pin 22a is lowered while the cullet boulder 22 is lowered.

22I) causes the elongated hole portions 24a and 2411 to move relative to each other in a direction away from the shaft portion 26a. However, since the range of relative movement does not extend to the frontage of the elongated holes 24a and 24b, once the force set holder 22 is assembled into the guide plate 30, the bits 7.
24b will not come off. By the way, in FIGS. 7 and 8, the printed circuit boards 35a to 35d are connected by a flexible printed circuit board 36. As shown in FIG. Therefore, by adopting the configuration of the present invention, it becomes possible to arrange a printed circuit board on the top plate of the current device, and it becomes possible to significantly reduce the size and compactness of the device. Furthermore, the link 4 and rotation shaft 4C described in the conventional example are not required, and space is saved and can be used effectively. Since the longitudinal position of the cassette is determined by the guide groove 30a of the guide plate 30, there is little variation and there is no need to adjust the longitudinal position of the cassette. However, in this device, the locus is determined by the shape of the guide groove 39a of the guide plays 1 to 3o, so the height of the rotation axis can be set arbitrarily.

FIG. 9 is a diagram showing the rotational movement when the height of the rotational axis of the rotational board 24 is set to the height of the tape center T in the configuration of the present invention. Furthermore, the N source section 37 is located at the rear of the device, and in recent small portable VTRs, the above-mentioned
The a source configuration is often adopted. As shown in FIG. 9, when the height of rotation 1 is set to the height of the tape center ■, when the cassette holder 22 is in the raised state J3, the structural surface extending to the rear part of the device, that is, the power supply part 37 The influence at 1 is C larger than that in the embodiment of the present invention explained in FIGS. 7 and 8. In other words, the configuration of the power supply section becomes difficult.

Therefore, in one embodiment of the present invention, by setting the height of the 8th axis above the tape center, it does not affect the structure of the power supply section as compared to the conventional one.

Effects of the Invention As described above, according to the present invention, assembly can be extremely simplified, and the main body of the apparatus can be significantly reduced in size and weight.

[Brief explanation of drawings]

Figure 1 is a partially cutaway perspective view of the conventional example, Figures 2 and 3
The figures are the same (a side sectional view showing a conventional example, Figs. 4 to 8 show an embodiment of the present invention, Fig. 4 is an external perspective view, Fig. 5 is an exploded perspective view, and Fig. 6 is a front view). 21...Device Main body, 22... cassette holder,
22a. 22b, 22c...bin, 24-...rotating board, 2
4a, 24b - Long hole portion, 24c... Rotation center hole, 2G... Angle, 26a... Shaft part, 30...
Guide play 1-130a...guide groove, 31...
Rotating head cylinder, 32...Chassis, 34...
・Cassette, 38...Cassette cover agent Yoshihiro MorimotoFigure 1Figure 3Figure 5Figure βFigure 7

Claims (1)

[Claims] 1. A rotating board with a rotating support shaft at one end, a cassette holder for inserting the rotating board held by the rotating board, and a cassette holder for inserting the rotating plate; (Rotate to set the device)! When performing a movement, a force seat mounting device that performs a movement to change the relative position with respect to the rotating board while performing a rotating movement of the force cellars 1 to 1 to the rotating board with respect to the rotating board. A magnetic recording/reproducing device comprising: