JP2765413B2 - Magnetic head device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic head device provided in a flexible disk device or the like.

[0002]

5 to 7 show a conventional magnetic head device, FIG. 5 is a perspective view of the magnetic head device, FIG. 6 is an exploded perspective view of the magnetic head device of FIG. 5, and FIG. FIG. 6 is an enlarged side view showing a state in which a fastening screw at a spring mounting bracket portion in FIG. 5 is loosened. In the figure, (1) is the lower (side 0) carriage, (2) is the lower head fixed to the upper surface of the lower carriage (1) with an adhesive, and (3) is the upper side of the lower carriage (1). The upper (side 1) arm arranged, (4) an upper head fixed to the lower surface of the upper arm (3) with an adhesive, (5) a leaf spring formed at one end of the upper arm (3), (6) is a spring mounting bracket disposed above the upper arm (3) leaf spring section (5), and (7) is inserted through the spring mounting bracket (6) and the leaf spring section (5) of the upper arm (3). The screw is screwed into the lower carriage (1), and the screw insertion hole (not shown) of the upper arm (3) leaf spring part (5) has a diameter.
Are formed so as to form a gap in the radial direction.

[0003] (8) is a pressure spring consisting of a torsion spring, one end of which is engaged with the leaf spring portion (5) of the spring mounting bracket (6) near the end of the upper arm (3) as shown in FIG. Then, the middle winding part is fitted to the spring mounting bracket (6), and the other end is engaged near the center of the upper arm (3) to move the upper arm (3) to the lower carriage.
(1) Energize to the side.

A conventional magnetic head device is constructed as described above. For example, in a manufacturing process of a flexible disk device, alignment and azimuth adjustment of an upper head (4) are performed by loosening a fastening screw (7) and moving an upper arm (3). This is performed by displacing in the direction of arrow A shown in FIG. When the fastening screw (7) is loosened during this adjustment, the spring mounting bracket (6) is supported by the contact point B shown in FIG.
7, a pressing force D for pressing the leaf spring portion (5) of the upper arm (3) is generated in a direction indicated by an arrow D in FIG. Therefore, when the upper arm (3) is displaced, a frictional force due to the pressing force D is generated as a reaction force on the contact surface between the leaf spring portion (5), the spring mounting bracket (6), and the lower carriage (1). .

[0005]

In the conventional magnetic head device as described above, when the upper arm is displaced with respect to the lower carriage to adjust the alignment or the like, the pressure spring is generated in the leaf spring portion. Since the frictional force is large, the upper arm becomes difficult to move. Therefore, fine adjustment of the upper arm is not easy and complicated work is required, and there is a problem that the adjustment takes time and productivity is deteriorated.

The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a magnetic head device that can easily displace the upper arm when adjusting the alignment or the like of the upper arm.

[0007]

According to a first aspect of the present invention, there is provided a magnetic head device comprising: a lower carriage having a lower head provided on an upper surface; and a lower carriage having one end mounted on the lower carriage. An upper arm provided with an upper head provided on the lower surface and having an upper head provided on a lower surface, a spring mounting bracket disposed on the leaf spring section, a spring mounting bracket, and a leaf spring Part and screwed into the lower carriage to separate the spring mounting bracket and leaf spring part.
A fastening screw for co-tightening , one end of which is engaged near the upper arm end of the spring mounting bracket, the middle section is held by the spring mounting bracket, and the other end is engaged near the center of the upper arm to lower the upper arm. A pressure spring that urges the carriage and a leaf spring
Provided at the end of the lower carriage which faces to form a retire surface for <br/> accommodating the leaf spring portion, rotating the spring mounting bracket in contact with the upper arm end closer edge of the spring mounting bracket Possible
And a convex portion to be supported.

In a magnetic head device according to a second aspect of the present invention, a lower carriage having a lower head provided on an upper surface thereof, and a plate disposed on one end of the lower carriage and mounted on the lower carriage. A spring portion is formed, an upper head is provided on the lower surface, an upper arm arranged on the upper side of the lower carriage, a spring mounting bracket arranged on the leaf spring portion,
A fastening screw inserted into the spring mounting bracket and the leaf spring portion and screwed into the lower carriage, one end of which is engaged near the upper arm end of the spring mounting bracket, the middle portion is held by the spring mounting bracket, and the other end is A pressure spring engaged near the center of the upper arm to urge the upper arm toward the lower carriage, and a retreat surface provided at an edge near the end of the upper arm of the spring mounting bracket to accommodate the leaf spring portion. And a projection supported on an edge near the end of the upper arm of the lower carriage.

[0009]

When the fastening screw of the magnetic head device according to the first aspect of the present invention is loosened,
The edge of the spring mounting bracket near the upper arm end is supported by the projection of the lower carriage.

[0010] When the fastening screw of the magnetic head device according to the second aspect of the present invention is loosened, the convex portion of the edge near the upper arm end of the spring mounting bracket is lowered. It is supported by the edge near the end of the upper arm of the side carriage.

[0011]

【Example】

Embodiment 1 FIG. 1 to 3 show one embodiment of the present invention. FIG. 1 is a perspective view of a magnetic head device, FIG. 2 is an exploded perspective view of the magnetic head device of FIG. 1, and FIG. It is a side enlarged view which shows the state which loosened the fastening screw of the spring attachment metal part. In the figure, (1) is the lower carriage, (2) is the lower head fixed to the upper surface of the lower carriage (1) with an adhesive, (3)
Is an upper arm arranged above the lower carriage (1),
(4) is an upper head fixed to the lower surface of the upper arm (3) with an adhesive, (5) is a leaf spring formed at one end of the upper arm (3), (6) is an upper arm (3) plate Spring mounting bracket arranged above the spring part (5), (7) is the spring mounting bracket (6) and upper arm
(3) A fastening screw that is inserted through the leaf spring section (5) and screwed into the lower carriage (1), and has a diameter of the upper arm (3) leaf spring section (5)
Are formed so as to form a gap in the radial direction with respect to the screw insertion hole (not shown).

(8) is a pressure spring composed of a torsion spring. As shown in FIG. 3, one end has an edge (3) near the end of the upper arm (3) of the leaf spring portion (5) of the spring mounting bracket (6). 61), the middle winding part is fitted to the spring mounting bracket (6), and the other end is engaged near the center of the upper arm (3) to lower the upper arm (3). It is urged toward the side carriage (1). (9) is the lower carriage
(1) is provided facing the edge (61) of the spring mounting bracket (6), and accommodates the leaf spring portion (5) of the upper arm (3) on the upper surface of the lower carriage (1). These are convex portions forming the retired surface (10).

In the magnetic head device configured as described above, the leaf spring portion (5) of the upper arm (3) is disposed on the retreat surface (10) on the upper surface of the lower carriage (1). Then, when the fastening screw (7) is loosened, as shown in FIG.
(6) Upper arm (3) Edge near edge (61) is lower carriage
It is supported by the projection (9) of (1).

For this reason, for example, when the fastening screw (7) is loosened during the alignment and azimuth adjustment of the upper head (4) in the manufacturing process of the flexible disk drive, the pressing spring (8)
The spring mounting bracket (6) is brought into contact point B shown in FIG.
Is tilted in the direction of arrow C shown in FIG.
A pressing force D is generated in the direction indicated by. However, since the pressing force D is supported by the convex portion (9) of the lower carriage (1), the upper arm
It does not act on the leaf spring portion (5) of (3). Therefore, when the upper arm (3) is displaced, there is no frictional force due to the pressing force D, and when the upper arm (3) is displaced, the leaf spring (5), the spring mounting bracket (6), and the lower carriage (1) are displaced. 3), the reaction force generated on the contact surface becomes extremely small, and the upper arm (3) can be easily displaced in the direction of arrow A shown in FIG. Therefore, fine adjustment and the like of the upper arm (3) can be easily performed, the operation can be simplified, and the manufacturing time for the adjustment and the like can be shortened, thereby improving productivity and reducing manufacturing costs. it can.

Embodiment 2 FIG. FIG. 4 is a diagram showing another embodiment of the present invention, and is an enlarged side view showing a state in which the fastening screws at the spring mounting portions of the magnetic head device are loosened as in FIG. In the drawings, the same reference numerals as those in FIGS. 1 to 3 denote corresponding parts, and (9) denotes a projection provided on the spring mounting bracket (6), which is disposed on an edge (61) of the spring mounting bracket (6). , Facing the upper surface of the lower carriage (1) and the upper arm (3) on the lower surface of the spring mounting bracket (6).
A retreat surface (10) for accommodating the leaf spring portion (5) is formed.

Also in this embodiment, when the fastening screw (7) is loosened, as shown in FIG.
(9) is supported by an edge near the end of the upper arm (3) of the lower carriage (1). For this reason, when the fastening screw (7) is loosened, the pressing force D due to the pressing force of the pressing spring (8) is supported by the lower carriage (1) via the projection (9), so that the upper arm ( It does not act on the leaf spring part (5) of 3). Therefore, although detailed description is omitted, it is apparent that the same operation as that of the embodiment of FIGS. 1 to 3 can be obtained in this embodiment.

[0017]

According to the first aspect of the present invention, as described above, the lower carriage provided with the lower head on the upper surface and the leaf spring disposed at one end on the lower carriage are provided. Part is formed, an upper head is provided on the lower surface, an upper arm disposed on the upper side of the lower carriage, a spring mounting bracket disposed on the leaf spring section, and inserted through the spring mounting bracket and the leaf spring section. It is screwed into the lower carriage
A fastening screw for fastening the spring mounting bracket and the leaf spring together , one end of which is engaged near the upper arm end of the spring mounting bracket, the middle part is held by the spring mounting bracket, and the other end is near the center of the upper arm. A pressure spring that is engaged to urge the upper arm toward the lower carriage , and a pressure spring that opposes the leaf spring portion .
Provided at the end to form a retire surface to accommodate the plate spring portion
Together, abut against the upper arm end closer edge of the spring mounting bracket
And a projection for rotatably supporting the spring mounting member .

The invention according to claim 2 of the present invention provides:
A lower carriage provided with a lower head on the upper surface, and a leaf spring portion disposed on the lower carriage at one end are formed, and an upper head is provided on the lower surface and disposed above the lower carriage. An upper arm, a spring mounting bracket disposed on the leaf spring portion, a fastening screw inserted into the spring mounting bracket and the leaf spring portion and screwed into the lower carriage, and one end of an upper arm end of the spring mounting bracket. A pressurizing spring that is engaged closer to the intermediate portion and held at the spring mounting bracket and the other end is engaged closer to the center of the upper arm to bias the upper arm toward the lower carriage; and an upper arm of the spring mounting bracket. Forming a retreat surface provided at the edge near the end of the to accommodate the leaf spring portion,
And a projection supported on an edge near the end of the upper arm of the lower carriage.

Thus , the spring is mounted by the fastening screw.
Tighten the bracket and leaf spring together to easily remove the upper arm.
Can be attached and when the fastening screw is loosened,
The spring mounting bracket rotates about the contact point B with the convex portion as a fulcrum,
The pressing force is not for the work by the biasing force of the pressure spring to the plate spring portion. Therefore, the upper arm can be easily adjusted by being displaced, so that the manufacturing time can be shortened and the manufacturing cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a magnetic head device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the magnetic head device of FIG. 1;

FIG. 3 is an enlarged side view showing a state in which a fastening screw at a spring mounting portion in FIG. 1 is loosened.

FIG. 4 is a diagram corresponding to FIG.

FIG. 5 is a perspective view showing a conventional magnetic head device.

FIG. 6 is an exploded perspective view showing the magnetic head device of FIG. 5;

FIG. 7 is an enlarged side view showing a state where a fastening screw at a spring mounting bracket portion in FIG. 5 is loosened.

[Description of Signs] 1 Lower carriage 2 Lower head 3 Upper arm 4 Upper head 5 Leaf spring part 6 Spring mounting bracket 7 Fastening screw 8 Pressure spring 9 Convex part 10 Retired surface 61 Edge

Claims (2)

(57) [Claims] 1. A lower carriage having a lower head provided on an upper surface, a leaf spring portion disposed on one end of the lower carriage in a state of being mounted on the lower carriage, and an upper head provided on a lower surface to provide the lower head. an upper arm which is arranged on the upper side of the side carriage, is screwed a spring mounting bracket disposed on said leaf spring portion, it is inserted into the spring mounting member and the plate spring portion to the lower carriage the spring mounting Bracket and plate
A fastening screw for co-tightening the spring part, one end of which is engaged near the end of the upper arm of the spring mounting bracket, the intermediate part is held by the spring mounting bracket, and the other end is closer to the center of the upper arm. A pressure spring for urging the upper arm toward the lower carriage , and a retreating surface provided at an end of the lower carriage facing the leaf spring for accommodating the leaf spring. At the same time , the spring mounting bracket comes into contact with the edge near the upper arm end of the spring mounting bracket to rotate the spring mounting bracket.
The magnetic head device provided with a convex portion which rotatably supports. 2. A lower carriage having a lower head provided on an upper surface thereof, a leaf spring portion disposed on one end of the lower carriage so as to be mounted on the lower carriage, and an upper head provided on a lower surface of the lower carriage. An upper arm disposed on the upper side of the side carriage, a spring mounting bracket disposed on the leaf spring portion, a fastening screw inserted into the spring mounting bracket and the leaf spring portion and screwed into the lower carriage, One end is engaged near the end of the upper arm of the spring mounting bracket, the middle portion is held by the spring mounting bracket, and the other end is engaged near the center of the upper arm to move the upper arm to the lower carriage. A pressure spring biasing to the side and a retreat surface for receiving the leaf spring portion provided at an edge near an end of the upper arm of the spring mounting bracket, and the upper arm of the lower carriage. Edge near edge A magnetic head device comprising: