JPH02198079A - Carriage mechanism for floppy disk device - Google Patents

Abstract

PURPOSE:To reduce the thickness of a floppy disk device by using a coupling member to secure the connection between a carriage and a head arm, and reducing the angle of elevation of the head arm in an unloaded state. CONSTITUTION:When a recording medium 14 is put into a main body, a receiver 18 moves down toward a spindle mechanism and a head arm 13 also moved down. Then an S1 head 12 touches the surface of the medium 14 and is loaded. An S0 head 10 has a table contact with the rear surface of the medium 14 with the pressing force of the head 12. When the medium 14 is ejected, the arm 13 moves up and the head 12 is detached from the surface of the medium 14. Thus the head 12 is unloaded. In such a case, the arm 13 is freely moved up and down with elastically of a plate spring member 21. In the unloaded state, the angle of elevation of the arm 13 is reduced, therefore the height value is also reduced. Thus the thickness of a floppy disk device is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a carriage mechanism for a double-sided floppy disk device.

(Prior Art) Conventionally, for example, in a 3.5-inch double-sided floppy disk device, as shown in FIG.

Carriage 11 with head 10 mounted and S1 head 1
A carriage mechanism consisting of a head arm 13 supporting the head 2 is provided. SO head 10 and S1 head 12
contacts both sides of the recording medium 14 inserted into the main body of the apparatus to perform read/write operations. The head arm 13 is coupled to the carriage 11 via a leaf spring 15.

For example, in a 3.5-inch floppy disk device, as shown in FIG. 3, a receiver 1B moves up and down to hold the recording medium 14 and chuck it to a spindle mechanism (not shown). It is provided. The carriage 11 is configured to move in the radial direction of the recording medium 14 held by the receiver 18 by a lead screw machine fAtty using a stepping motor 1B as a driving source.

By the way, as shown in FIGS. 2 and 3, in the head arm 13, an unloading section 13a provided on a side surface engages with the receiver 18, and the loading is performed in conjunction with the vertical movement of the receiver 18. or is configured to perform an unload operation. That is, when the recording medium 14 is inserted, the receiver 18 holding the recording medium 14 descends toward the spindle mechanism provided at the bottom of the apparatus main body, and the head arm 13 descends accordingly. As a result, S1 head 1
2 comes into contact with the surface of the recording medium 14 and enters the loaded state.

Due to this pressing force of the S1 head 12, the SO head 1O comes into stable contact with the back surface of the recording medium 14. On the other hand, when the recording medium 14 is ejected (in response to the operation of the eject button I9 in FIG. 3), the receiver 18 rises, and the head arm 13 rises accordingly. As a result, the S1 head 12 separates from the surface of the recording medium 14 and enters the unloaded state. In the unloading state, as shown in FIG.
The angle of elevation (i.e., height) is determined by the position where 3a and receiver 18 engage.

In this case, a gap G is provided between the distal end of the head arm 13 and the frame (upper cover) 20 constituting the main body of the apparatus so that they do not come into contact with each other.

(Problems to be Solved by the Invention) In the conventional carriage mechanism of a floppy disk device, the elevation angle of the head arm 13 in the unloaded state is relatively large, and the angle of elevation between the head arm 13 and the frame 20 is relatively large. There are intervals. For this reason, the height of the device body (the size in the axial direction of the spindle mechanism) becomes relatively large, which is one of the factors that prevents the device from becoming thinner.

SUMMARY OF THE INVENTION An object of the present invention is to provide a carriage mechanism for a floppy disk device that can relatively reduce the elevation angle of the head arm in an unloaded state, resulting in a thinner device body. .

[Structure of the Invention] (Means and Effects for Solving the Problem) The present invention provides a carriage mechanism that includes a carriage on which an SO head is mounted and a head arm that supports an S1 head. or a lowering load/unload mechanism, and when the head arm is raised by this load/unload mechanism, the 81 head is maintained in the unloaded state with the tip of the head arm in contact with the frame of the apparatus main body, and S1 This mechanism includes a leaf spring member that elastically deforms to lower the head arm when the head is loaded, and serves as a coupling member for coupling the carriage and the head arm.

With such a configuration, since there is no gap between the tip of the head arm and the frame in the unloaded state, the overall thickness of the device body can be reduced.

(Example) The present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view showing the structure of a carriage mechanism of, for example, a 3.5-inch floppy disk device according to the same embodiment.

As shown in FIG. 1, in the carriage mechanism of the same embodiment,
The head arm 13 is a leaf spring member 2! The plate spring member 21 is used as a fulcrum to rise and fall during loading/unloading. The leaf spring member 21 has spring characteristics such that when the head arm 13 transitions from the unloaded state to the loaded state, it is elastically deformed so that the head arm 13 descends. head arm 1
3 is configured such that the elevation angle in the unloaded state is determined by both the position where the unloading part 13a and the receiver 18 engage and the contact point between the tip part and the frame 20. The unload section L3a and the receiver 18 are loaded/
It constitutes an unloading mechanism. Note that the other configurations are the same as those shown in FIGS. 2 and 3, and therefore their description will be omitted.

Next, the effects of this embodiment will be explained. First, as described above, when the recording medium 14 is inserted into the apparatus main body, the receiver 18 holding the recording medium 14 descends toward the spiral mechanism, and the head arm I3 descends accordingly. As a result, the S1 head 12 comes into contact with the surface of the recording medium 14 and enters the loaded state. Due to this pressing force of the 81 head 12, the SO head 10 comes into stable contact with the back surface of the recording medium 14.

On the other hand, when the recording medium 14 is ejected, the receiver 18
rises, and the head arm 13 rises accordingly.

As a result, the S1 head 12 separates from the surface of the recording medium 14 and enters the unloaded state.

At the time of unloading, as shown in FIG. 1, the head arm 13 has an elevation angle ( That is, the height) is determined. Therefore, the gap G unlike in the conventional case does not occur between the tip of the head arm 13 and the frame (upper cover) 20 constituting the main body of the apparatus.

In other words, the head arm in the unloaded state! 3
The elevation angle of the head arm 13 is smaller than that of the conventional method shown in FIG. 2, and the height dimension from the frame on the carriage 11 side to the tip of the head arm 13 can be reduced. This makes it possible to reduce the height dimension of the apparatus main body by at least the distance G compared to the conventional system as shown in FIG.

When transitioning from this unload state to the load state,
As described above, the head arm 13 is lowered in conjunction with the lowering operation of the receiver 18. At this time, the leaf spring member 21
In this case, the head arm 13 is elastically deformed so as to descend from the state in which the head arm 13 is held in the unloaded state. This causes the head arm 13 to move toward the recording medium 1.
The S1 head 12 is surely lowered in the direction 4, and the S1 head 12 supported by the head arm 13 is loaded onto the recording medium 14.

[Effects of the Invention] As detailed above, according to the present invention, the elevation angle of the head arm in the unloaded state is relatively reduced, and the dimension in the height direction to the tip of the head arm in the unloaded state is reduced. Can be made smaller. Therefore, as a result, the thickness of the device main body can be reduced and the device can be made thinner.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the structure of a carriage mechanism according to an embodiment of the present invention, FIG. 2 is a side view showing the structure of a conventional carriage mechanism, and FIG. 3 is a perspective view showing the structure of a conventional floppy disk device. It is. IO...SO head, 11...carriage, 12.
...s1 head, 13...head arm, 13a...
・Unloading section, 14...recording medium, 15.21...
- Leaf spring member, 18...receiver. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] A carriage carrying an S0 head, and an S1 coupled to the carriage and facing the S0 head.
a head arm that supports the head; and a load that engages with the head arm, lowers the head arm in the direction of the recording medium to load the S1 head, and raises the head arm to unload the S1 head. /an unloading mechanism; the loading/unloading mechanism maintains the unloaded state of the S1 head in a state where the tip of the head arm is in contact with the frame of the apparatus main body when the head arm is raised; A carriage mechanism for a floppy disk device, comprising a leaf spring member that is elastically deformed so that the head arm descends when an S1 head is loaded, and constitutes a coupling member that couples the carriage and the head arm. .