JPH0718005Y2 - Head mounting device for tape recorder - Google Patents

Description

[Detailed Description of the Invention] (Industrial application field) The present invention suppresses the mounting height position of the magnetic head provided on the sliding plate (head mounting plate) to a low level, and further adjusts the magnetic head height and azimuth. The present invention relates to a head mounting device for a tape recorder that can be easily adjusted.

(Prior Art) As a head mounting device for a tape recorder, one shown in FIG. 7 is known. This head mounting device includes a sliding plate (head mounting plate) a that can slide between an operating position and a stopping position.
An upper end of a head fixing plate e to which the magnetic head d is fixed is fixed by a fixing screw f via a spacer b, and the other end of the head fixing plate e is vertically moved by an adjusting screw h against a spring c. It has a structure that is movably attached. In the figure, g and i are screw holes provided in the sliding plate a, and j is a tape guide.

However, in such a configuration, when the azimuth adjustment of the magnetic head d is performed by rotating the adjusting screw h, the height of the magnetic head d changes accordingly.

As a head mounting device having a structure for solving such a problem, for example, as disclosed in Japanese Utility Model Publication No. 56-11229, a wavy wave is formed between a head fixing plate to which a magnetic head is fixed and a sliding plate (head mounting plate). A structure has been proposed in which elastic plates are provided and both ends of the head fixing plate are supported so as to be vertically movable. That is, in this device, a corrugated elastic plate is attached by inserting holes provided at both ends thereof into a supporting portion (fixing boss), and a holding collar is provided so as to penetrate through the supporting portion from above, and the holding collar is mounted on the holding collar. By providing the head fixing plate on the head mounting plate, the both ends of the head mounting plate are mounted so as to be vertically movable against the corrugated elastic plate while maintaining the supporting position of the head mounting plate.

(Problems to be solved by the invention) However, in such a structure, since the mounting position of the magnetic head is held by the support portion and the holding collar penetrating the support portion, the mounting height of the magnetic head is increased. However, there is a problem in that it requires a special component such as a holding collar.

The present invention has been made in consideration of such circumstances, and an object thereof is to easily adjust the height and azimuth of the magnetic head and to keep the mounting height of the magnetic head low. It is to provide a head mounting device for a tape recorder that can be used.

(Means for Solving the Problems) A head mounting device for a tape recorder according to the present invention comprises a sliding plate (head mounting plate) slidable between an operating position and a stopping position, and a magnetic head at the center. And a head fixing plate having screw insertion holes provided at both ends thereof so that the height position of the magnetic head can be adjusted and the azimuth angle can be adjusted. The lower end portions of both side walls are integrated by the connecting wall, and a tape guide member made of synthetic resin is provided on the side surfaces of the both side walls, and the central portion is bent toward one side, A leaf spring having a long hole extending in the longitudinal direction at a position corresponding to the screw insertion hole at both ends in the direction is disposed on the connecting wall of the tape guide member with its central bent portion abutting. The stopper portion provided on the connecting wall of the tape guide member and the front The leaf fixing spring is engaged with the leaf spring to inhibit the displacement of the leaf spring, and the head fixing plate is placed on both ends of the leaf spring.
An adjusting screw that penetrates the elongated hole from the screw insertion hole,
It is characterized by being screwed to the sliding plate via the tape guide member.

(Operation) According to the device of the present invention configured as described above, the displacement is prohibited by the stopper portion, and the magnetic force is applied to the central portion against the leaf spring provided in contact with the central bending portion sliding plate. Since both ends of the head fixing plate that fixes the head are supported so that they can move up and down, the mounting position of the magnetic head can be accurately regulated without using special parts such as conventional holding collars. As a result, the mounting height of the magnetic head itself can be kept low, and the height and azimuth of the magnetic head can be easily adjusted.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of the apparatus of one embodiment, FIG. 2 is a plan view showing its assembled state, and FIG. 3 is a view from the direction of arrow III in FIG. In each drawing, reference numeral 1 denotes a base plate of a tape recorder, and a head mounting plate (sliding plate) 2 is slidably mounted on the upper surface of the base plate 1 in the directions of arrows A and B between an operating position and a stop position. It The spring 3 mounted between the head mounting plate 2 and the substrate 1 biases the head mounting plate 2 in the stop position direction (direction of arrow B).
Is moved against the spring 3.

However, a tape guide member 4 made of synthetic resin is provided on the upper surface of the head mounting plate 2, and the magnetic head 12 is mounted on the tape guide member 4 as described later.

The tape guide member 4 is roughly composed of a main body 5 in which lower end portions of both side walls 5a, 5a are integrated by a connecting wall 5b and the both side walls.
The tape guide projections 5c and 5c are provided on the side surfaces of the 5a and 5a, and the rectangular through hole 7 is provided in the connecting wall 5b. Then, the head mounting plate 2 is mounted and fixed by mounting screws 6 which penetrate the both side walls 5a, 5a in the vertical direction.

The connecting wall 5b of the tape guide member 4 is provided with screw insertion holes 15 and 15 through which adjustment screws 16 and 16 to be described later are inserted, and further located at both side edge portions of the central portion of the through hole 7. Engagement recess (stopper) that engages an engagement piece 10 of a leaf spring 8 described later
11 are provided integrally.

On the other hand, the leaf spring 8 has a central portion protruding downward and is substantially U-shaped.
It has a bent portion 8a that is bent in a letter shape, and has curved surfaces 8b and 8b that are curved by projecting both end portions upward. The curved surfaces 8b, 8b of the leaf spring 8 are provided with elongated holes 9, 9 for inserting the adjusting screws 16, 16 in the longitudinal direction, and the central edges of the leaf spring 8 are also provided. Square-shaped engaging pieces 10, 10 are integrally formed on the portion (bent portion 8a) so as to project.

The leaf spring 8 is located on the connecting wall 5b of the tape guide member 4, and the bent portions 8a are connected to each other by engaging the engaging pieces 10 with the engaging recesses (stoppers) 11. It is provided in contact with 5b. By mounting the leaf spring 8 on the tape guide member 4 as described above, the mounting position of the leaf spring 8 is regulated, and the head mounting plate 2 is displaced in the moving direction (arrow A, B direction) and the direction orthogonal thereto. Is prohibited.

Head fixing plate 13 formed by fixing the magnetic head 12 in the center
Is mounted on the leaf spring 8 attached to the tape guide member 4 as described above, with its both ends in contact with the curved surfaces 8b, 8b. Then, through the screw insertion holes 14 and 14 provided at both ends of the head fixing plate 13, through the long holes 9 and 9 of the leaf spring 8 and the screw insertion holes 15 and 15 of the tape guide member 4, the screw holes of the head mounting plate 2 The head fixing plate 13 is pressed against the head mounting plate 2 side against the leaf spring 8 by the adjusting screws 16 and 16 screwed to the 17, 17 and is fixed to the head mounting plate 2 (tape guide member 4). Mounted vertically.

Then, by rotating the adjusting screws 16 and 16 to adjust the screwing amount with respect to the head mounting plate 2, the height positions of both ends of the head fixing plate 13 are adjusted against the elastic force of the leaf spring 8.
The height position and azimuth angle of the magnetic head 12 fixed to the head fixing plate 13 can be freely adjusted.

Thus, according to the head mounting device having such a configuration, the leaf spring 8 is connected to the head fixing plate 13 having the curved surfaces 8b, 8b at both ends with the center bent portion 8a being engaged with the tape guide member 4 as a center. Since the contact position is laterally displaced and elastically deformed to define the height position of the head fixing plate 13, both ends of the head fixing plate 13 can be smoothly moved up and down. Further, since both ends of the head fixing plate 13 are supported by contacting only a part of the curved surfaces 8b, 8b of the plate spring 8, the head fixing plate 13 moves up and down without difficulty corresponding to the height adjustment of both ends.
As a result, undesired force acts on the head fixing plate 13 to break the head fixing plate 13, or the head fixing plate 13 and the magnetic head 12 are broken.
It is possible to prevent accidents such as damage to the fixed part of the.

Further, since the stopper member 11 prohibits the moving displacement of the leaf spring 8, the head fixing plate is not required to use any special parts.
The movement displacement of the head mounting plate 2 in the sliding direction of 14 can be effectively restricted, the mounting position of the magnetic head can be kept highly stable, and the mounting height position of the magnetic head 12 as a whole. It is possible to obtain an effect such as to keep the value low.

Next, a second embodiment shown in FIGS. 4 and 5 will be described.

In the apparatus of this embodiment, instead of providing the engaging piece 10 on the leaf spring 8, the rising wall (stopper portion) 18 formed by bending the end portion of the head mounting plate 2 and the connecting portion 5b of the tape guide member 4 are provided. The pair of stopper protrusions (stopper portions) 19, 19 formed at both ends of the one side edge sandwich the leaf spring 8 placed on the tape guide member 4 from both sides thereof, thereby prohibiting its displacement. It was done like this. Also, this embodiment differs from the previous embodiment in that the central bent portion of the leaf spring 8 is substantially V-shaped, and both end portions which are contact portions with the head fixing plate 13 are substantially V-shaped. ing.

Needless to say, even if the stopper portion is formed in this way, the same operational effect as that of the previous embodiment can be exhibited.

Needless to say, as a modified example of the present invention, the head fixing plate 13 may be directly mounted on the head mounting plate 2 as shown in FIG. In this case, a stopper portion for the leaf spring 8 may be formed on the head mounting plate 2 as a stopper piece 20 obtained by cutting and raising a part of the head mounting plate 2. Further, the head fixing plate 13 may be directly supported by the edge portions of both ends of the leaf spring 8 without being curved.

Besides, the present invention can be variously modified and implemented without departing from the scope of the invention.

As described above, according to the head mounting device of the tape recorder of the present invention, the height of the magnetic head can be adjusted and the azimuth can be controlled while keeping the mounting height of the magnetic head low with a simple structure. It has a great practical effect such that adjustment can be performed easily.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a head mounting device of a tape recorder,
2 is a plan view showing an assembled state of the apparatus, FIG. 3 is a view seen from the direction of arrow III in FIG. 2, and FIGS. 4 and 5 show a second embodiment. 4 is a plan view showing an assembled state, FIG. 5 is a view seen from the direction V in FIG. 4, and FIG.
FIG. 7 is a diagram showing the embodiment of FIG. 3, and FIG. 7 is a diagram showing the configuration of a conventional device. 1 ... Board, 2 ... Head mounting plate (sliding plate), 8 ... Leaf spring, 8a ...
Bent portion, 8b ... Curved portion, 10 ... Engaging piece, 11 ... Engaging recess, 12 ... Magnetic head, 13 ... Head fixing plate, 16 ... Adjusting screw, 18 ... Standing wall (stopper portion), 19 ... Stopper protrusion ( Stopper part),
20 ... Stopper piece (stopper part).

Claims (1)

[Scope of utility model registration request] 1. A slide plate (2) slidable between an operating position and a stop position and lower end portions of both side walls are integrated by a connecting wall, and a tape guide projection is provided on a side surface of the both side walls. A tape guide member (4) made of synthetic resin provided with (5c) and a magnetic head (10) are fixed in the center and screw insertion holes (1
The head fixing plate (13) provided with 4) and the central portion thereof are bent toward one side, and elongated holes (9) along the longitudinal direction are provided at positions corresponding to the screw insertion holes at both ends in the longitudinal direction. A leaf spring (8); and a stopper portion (11, 18, 19) which is provided on the connecting wall of the tape guide member and which engages with the leaf spring to prohibit movement displacement of the leaf spring. A leaf spring is arranged on the connecting wall of the tape guide member mounted on the sliding plate with its central bent portion abutting, and the head fixing plate is placed on both ends of the leaf spring. Then, the adjustment screw (1
6. A head mounting device for a tape recorder, wherein 6) is screwed onto a sliding plate via the tape guide member so that the height of the magnetic head can be adjusted and the azimuth can be adjusted.