JPH0219545B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic recording/reproducing device, and particularly to its chassis configuration.

Conventional configuration and its problems Conventionally, a magnetic recording and reproducing apparatus that performs magnetic recording and reproducing by loading a magnetic tape using a cassette and winding it around a rotating head cylinder has a configuration as shown in FIGS. 1 and 2. It is. That is, the first
In the figures and FIG.
A capstan bearing 4, a pinch roller 5, a first rotating ring 6, a second rotating ring 7, etc. are arranged, and a guide post 10 is mounted on a guide base 9 supported by a boss 8 on the chassis 1. , 11 is installed in a slidable manner. The rotating head cylinder 13 is
installed on the chassis 1 and whose upper end surface is the chassis 1
It is attached to the upper surface of a substantially hollow cylindrical cylinder receiver 14 that is inclined with respect to the upper surface. Reel stand 2
A drive transmission means (not shown) for driving the first and second rotating rings 6 and 7 is arranged on the upper surface of the chassis 1. Note that 15 is a cassette, 16 is a take-up reel, 17 is a magnetic tape, 18 is an impedance roller, 19 is an A/C head, and 20 is provided with guide posts 21 and 22, which are slidably attached to the upper surface of the guide base 9. The first rotary ring 6 is connected to the first slider 12 and to the second slider by means of a coupling device not shown.
The rotating rings 7 are respectively connected to the second sliders 20. Further, FIG. 1 is a side view of the magnetic recording/reproducing apparatus, and FIG. 2 is a rear view thereof.

However, in such conventional magnetic recording and reproducing devices, although the height of the entire mechanism is relatively high, the chassis 1 is in the form of a single plate, so the strength is weak compared to its size. It was hot. Further, since all the mechanisms are installed on the chassis 1, the chassis 1 requires a large area, resulting in a problem that the device becomes large and heavy.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a magnetic recording and reproducing device that can improve the strength of the chassis and also reduce the size and weight of the device.

Structure of the Invention In order to achieve the above object, the magnetic recording and reproducing apparatus of the present invention has a loading means for pulling out a magnetic tape stored in a cassette and loading it onto a predetermined path including a rotary head cylinder, and a first plane plate and , a second flat plate protruding from the entire outer periphery of the first flat plate in a direction perpendicular to the first flat plate;
a third plane plate extending outward in parallel with the plane plate;
a chassis including a substantially cylindrical cylinder receiving portion protruding from the surface of the first flat plate in the same direction as the second flat plate and on which the rotary head cylinder is placed; A rotating ring for loading is arranged in an annular space between the cylinder and the cylinder receiving part.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

Figure 3 is a schematic plan view of the magnetic recording/reproducing device;
The figures are the same side view, Fig. 5 is the same rear view, Fig. 6 is the same front view, Fig. 7 is a perspective view of the main parts, Fig. 8 is a perspective view of the chassis, and Figs. 1 and 2 are Components that are the same as those shown in are given the same reference numerals and their explanations will be omitted. 23 is a chassis, 24 is a supply reel, 25 is an erase head, 26 is an impedance roller, 27 is a tension pole, 28 to 3
1 is a guide post. The magnetic tape 17 wound on the supply reel 24 is attached to guide posts 28 and 29.
It goes out of the cassette 15 through the tension pole 27, the erase head 25, the impedance roller 26, and the guide posts 21, 22, and then wraps around the rotary head cylinder 13, and then passes through the guide posts 10, 11, the impedance roller 18, A. /C
It enters the cassette 15 through the head 19, guide post 30, capstan 3, and pinch roller 5, passes through the guide post 31 inside the cassette 15, and is wound onto the take-up reel 16. The one-dot chain line A is the trajectory of the guide posts 21 and 22 from a position near the cassette 15 to the predetermined winding position, and the one-dot chain line B is the trajectory of the guide posts 10 and 11 from a position near the cassette 15 to the predetermined winding position. It is the trajectory of time. The chassis 23 includes a first plane plate 23a, a second plane plate 23b that projects vertically upward from the entire outer periphery of the first plane plate 23a, and a second plane plate 23b.
a third flat plate 23c extending outward from the entire circumference of the upper end of the third flat plate 23c in parallel with the first flat plate 23a; and a fourth flat plate protruding vertically downward from the entire outer periphery of the third flat plate 23c. 23d, and the first plane plate 23
It is integrally formed with a hollow cylindrical cylinder receiving part 23e that projects vertically upward from the entire inner peripheral edge of the cylinder a, and a rotary head cylinder 12 is attached to the upper surface of the cylinder receiving part 23e. The second plane plate 23b has a substantially arc shape that is substantially concentric with the first and second rotating rings 6, 7. The second plane plate 23b and the cylinder receiving part 2
The first and second rotating rings 6, 7 are installed in the annular space between the third flat plate 23c and the third flat plate 23c.
A guide base 9 is installed above with a portion protruding above the first flat plate 23a. This guide base 9 has a pair of guide grooves (not shown) formed in a portion projecting above the first plane plate 23a, and these guide grooves allow the guide post 2
a second slider 20 on which numbers 1 and 22 are implanted;
The first slider 12 on which guide posts 10 and 11 are installed is guided, and the sliders 20 and 12
move along the trajectories shown by dashed-dotted lines A and B in Figure 3, respectively. Although not shown, in the vicinity of the reel stand 2, below the third flat plate 1c,
A reel stand drive transmission means is arranged. Further, the first and second rotating rings 6 and 7 are connected to the first and second sliders 12 and 20, respectively, by connecting members, and the rotating rings 6 and 7 are rotationally driven by the rotating ring drive transmission means. This causes the sliders 12, 20 to move. Further, the flywheel portion of the capstan 3 is connected to a third plane plate 23.
It is located below c.

In the above embodiment, an example was explained in which the fourth plane plate 23d was provided on the chassis 23.
This fourth plane plate 23d may not be provided.

Effects of the Invention As described above, according to the present invention, the height space between the first plane plate and the third plane plate for housing the rotating ring can be used to store, for example, a reel stand drive transmission mechanism or a cap. Not only can the stun flywheel section etc. be stored, making the entire device smaller and lighter, but the second flat plate arranged in a rib shape allows
The strength of the entire chassis, especially the strength near the rotary head cylinder attachment part, can be greatly improved.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a conventional device, FIG. 2 is a schematic rear view of the conventional device, FIGS. 3 to 8 show an embodiment of the present invention, FIG. 3 is a schematic plan view thereof, and FIG. 5 is a schematic rear view of the same, FIG. 6 is a schematic front view of the same, FIG. 7 is a perspective view of the main parts, and FIG. 8 is a perspective view of the chassis. 6, 7... Rotating ring, 13... Rotating head cylinder, 15... Cassette, 17... Magnetic tape, 23... Chassis, 23a... First flat plate,
23b...second plane plate, 23c...third plane plate,
23e...Cylinder receiving part.

Claims (1)

[Claims] 1 Pull out the magnetic tape stored in the cassette,
It has a loading means for loading in a predetermined path including a rotary head cylinder, a first plane plate, and a second plane plate protruding from the entire outer periphery of the first plane plate in a direction perpendicular to the first plane plate. , a third plane plate extending outward from the entire circumference of the tip of the second plane plate in parallel with the first plane plate, and protruding from the surface of the first plane plate in the same direction as the second plane plate. and a chassis including a substantially cylindrical cylinder receiving portion on which the rotating head cylinder is placed, and a rotating ring for loading is provided in an annular space between the second plane plate and the cylinder receiving portion. Magnetic recording and reproducing device installed.