JPH0469810A - Magnetic head adjusting mechanism for magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the number of parts, to shorten the assembling time and to improve the work efficiency by unifying a base lower plate and a base upper plate into one body to eliminate a need of retaining screws and springs. CONSTITUTION:A base upper plate 2 on which a magnetic head 7 is mounted, a base lower plate, and a connection part 1' are structured as one body, and the thickness is made thinner than the other parts by pressing for the purpose of giving a flat spring function, and the spring force acts in such direction that upper and lower plates are closely brought into contact with each other. The contact between the upper end part of a magnetic head 7 and that of a magnetic tape 8 is adjusted by a swing adjusting screw 5. At this time, the connection part 1' absorbs torsion. The inclination of the upper end part of the magnetic head 7 in the opposite running direction of the magnetic tape 8 is adjusted by an inclination adjusting screw 6. At this time, the connection part 1' absorbs bending. In this structure, the number of assembling parts is 3.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention aims to reduce the number of component parts and reduce the assembly cost of the position/attitude adjustment section of the magnetic head of a magnetic recording/reproducing device. Concerning easy product structure.

[Conventional technology]

For conventional products, the method shown in FIG. 5 is generally used (Japanese Unexamined Patent Publication No. 61-273715). 3. Press down the base upper plate 2 on which the magnetic head 7 is mounted against the base lower plate 1. Cap screw 4. Tilt adjustment screw 5. It is semi-fixed by a tilt adjustment screw 6. In order to set the magnetic head 7 at an appropriate position and attitude relative to the magnetic tape 8, the top plate 2 on which the magnetic head 7 is mounted is tilted in a direction perpendicular to the tape sliding surface of the head using the tilt adjustment screw 5. and the angle of inclination in a direction parallel to the tape running direction using the inclination adjusting screw 6. The number of parts to be assembled in this structure is six (excluding the head attachment).

[Problem to be solved by the invention]

The above conventional structure requires a large number of parts to be assembled, and requires assembly using a combination of compression springs and screws, as well as adjustment work for three screws, which requires time and assembly cost, and requires little work experience. The disadvantage is that it is difficult.

The problems to be solved are (1) reducing the assembly cost for assembling component parts;

(2) The structure should be such that even inexperienced workers can easily assemble it.

(3) The number of parts can be reduced to reduce purchasing costs accordingly.

An object of the present invention is to provide a product structure that does not have the above-mentioned problems.

[Means to solve the problem]

The present invention provides (1) a structure that satisfies functions even if the number of component parts is reduced in order to reduce assembly costs and purchase costs;

(2) The structure should be such that even those who do not require extensive experience in the work can easily assemble it.

[Effect]

(i) Integration of parts By integrating two functions, the number of parts to be directly assembled is reduced, thereby reducing assembly time and assembly costs.

(ii) Assembly costs are reduced by eliminating assembly work (assembling the presser spring) that is difficult for inexperienced workers and improving work efficiency.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. In the figure, an upper base plate 2 on which a magnetic head 7 is mounted, a lower base plate 1, and a connecting portion 1' are integrally constructed. The connecting portion 1' is made thinner than the other portions by press processing in order to have a plate springing function, and the spring force is constantly acting in the direction of bringing the upper and lower plates into close contact. The structure of the connecting part 1' is similar to the other embodiments shown in FIGS. 2(a) to (c), in which slits are formed by press working to make the cross-sectional area smaller than other parts, and the connecting path is lengthened to increase elastic deflection. A larger one is also fine.

The tilt adjustment screw 5 is screwed into the upper plate part and temporarily fixed, and the tilt adjustment screw 6 is screwed into the lower plate part 1 through a loose hole in the upper plate part 2 and temporarily fixed.

With this structure, when the tilt adjustment screw 5 is rotated clockwise, the upper end of the magnetic head 7 and the upper end of the magnetic tape 8 come into strong contact, and when the tilt adjustment screw 5 is rotated counterclockwise, the opposite occurs. At this time, connection part 1
′ absorbs torsion. When the tilt adjustment screw 6 is rotated clockwise, the upper end of the magnetic head 7 tilts in the direction opposite to the running direction of the magnetic tape 8, and when it is rotated counterclockwise, the upper end of the magnetic head 7 tilts in the opposite direction. At this time, the connecting portion 1' absorbs the bending. In this way, tilt adjustment screw 5. By turning the tilt adjustment screw 6, the attitude of the magnetic head 7 with respect to the magnetic tape 8 is adjusted. The number of parts to be assembled in this structure is three (excluding the head attachment).

FIG. 3 shows another embodiment according to the present invention. In this example, a part of the base upper plate 2 is made thinner or the width is reduced to 1' to provide a spring function, and the base upper plate 2 and the base lower plate 1 are engaged. Pivot fulcrum 12-
2 is provided. The tilt adjustment screw 5 is screwed into the upper plate part and temporarily fixed, and the tilt adjustment screw 6 is screwed into the lower plate part 1 through a loose hole in the upper plate part 2 and temporarily fixed.

With this structure, when the tilt adjustment screw 5 is rotated clockwise, the upper end of the magnetic head 7 and the upper end of the magnetic tape 8 come into strong contact, and when the tilt adjustment screw 5 is rotated counterclockwise, the opposite occurs. At this time, connection part 1
′ absorbs torsion. When the tilt adjustment screw 6 is rotated clockwise, the upper end of the magnetic head 7 tilts in the direction opposite to the running direction of the magnetic tape 8, and when it is rotated counterclockwise, the upper end of the magnetic head 7 tilts in the opposite direction. At this time, the connecting portion 1' absorbs the bending. In this way, tilt adjustment screw 5. By turning the tilt adjustment screw 6, the attitude of the magnetic head 7 with respect to the magnetic tape 8 is adjusted. The number of parts to be assembled in this structure is four (excluding the head attachment).

〔Effect of the invention〕

According to the present invention, since the base lower plate 1 and the base ox plate 2 are integrated, this assembly work is unnecessary.

This eliminates the need for presser screws and presser springs.
The assembly time required for assembling these parts can be eliminated, and the cost of these parts can also be eliminated. others,
Even an inexperienced worker can easily perform this assembly work, so that work efficiency can be improved.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the invention, FIG. 2 is a perspective view of another embodiment of the connecting structure of the invention, and FIG. 3 is a partial perspective view of a second embodiment of the invention. Figure 4 is a side view of Figure 3, and Figure 5 is a side view of Figure 3.
The figure is a longitudinal cross-sectional view of a conventional structural example. 1 is the lower plate of the base, 1'' is the connecting part with leaf spring function, 2 is the upper plate of the base, 3 is the presser spring, 4 is the cap screw, 5 is the tilt adjustment screw, 6 is the tilt adjustment screw. 7 is the magnetic head, 8 is a magnetic tape, 9 is a tape running direction, 10 is a tilt adjustment direction, 11 is a tilt adjustment direction. 12 is a pivot fulcrum. 12-1. and 12-2 are two pivot fulcrums each. The black part of 13 is Shows slits made by pressing.

Claims (1)

[Claims] 1. Contact position of the magnetic head with respect to the running magnetic tape.
A magnetic head adjusting device for a magnetic recording/reproducing device for optimizing the posture, characterized in that a double-structured base plate on which a magnetic head is mounted is provided with a spring structure integrally on either the upper plate or the lower plate. 2. A magnetic head adjusting device for a magnetic recording/reproducing device according to claim 1, wherein the upper plate and the lower plate are integrally constructed.