JPS58188369A - Head moving device - Google Patents

Abstract

PURPOSE:To use components in common and to reduce cost, by fitting separate moving means to plural head carriages individually. CONSTITUTION:When pulleys 8, 9 are rotated with a step motor, either one of steel belts 10, 11 is wound depending on the direction of rotations and the other belt is unwound, then the head carriages 6, 7 are moved forward or backward along guide rods 4, 5. In this case, the carriages 6, 7 are driven independently. The carriage 6 is fitted with a link member 18 and the vertical part is fixed at the inside of a side wall of the carriage 6. The other end of the member 18 is divided into two parts, to which a head block 7a of the other carriage 7 is inserted. In this case, the two carriages 6, 7 are linked incorporatedly via the member 18. In this case, a motor, the pulley 8 and the belt 10 are removed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a head moving device, and more particularly to a head moving device capable of moving a plurality of head-mounted Herad carriages independently or integrally. .

For example, in a floppy disk device in which two magnetic disks are driven by one drive, multiple heads are mounted on one head carriage and moved using one stepper motor. There is something. If such a structure is adopted, after reading or writing from one magnetic disk, if another magnetic disk is used, the track position of the target magnetic disk becomes unknown. To solve this problem, a track position storage circuit is required, resulting in a complicated structure and high cost.

On the other hand, each of multiple independent head carriages has one
A method has also been proposed in which each head is mounted and the head carriage is moved by a separate stepper motor. If this method is adopted, the above-mentioned drawbacks can be overcome.

Generally, a device in which multiple heads are mounted on a single head carriage as described above and a device in which separate heads are attached to multiple head carriages and moved by separate motors have completely different mechanisms. Each type of device was designed and manufactured separately.

For this reason, there is no compatibility of parts between the two different types of products, and there is a drawback that there is a lot of waste in design, parts, etc., resulting in high costs.

The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional technology, and allows a plurality of Herad carriages to be moved integrally or each independently, and by making one part common, the cost can be reduced. The purpose of the present invention is to provide a head moving device that can move the head down.

In order to achieve the above object, the present invention selectively attaches separate moving means to a plurality of head carriages that can move without interfering with each other, so that the head carriages can be moved independently. Alternatively, we adopted a structure that allows them to be moved together.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figures 1 to 3 illustrate one embodiment of the present invention.
In the figure, reference numeral 1 designates a frame of the apparatus, and this frame is constructed so that stepper motors 2 and 3 can be mounted independently vertically and horizontally (with two positions shifted).

Frame 1 (2) has two guide rods 4 and 5 horizontally suspended in parallel, and two head carriages 6 and 7 are slidably attached using guide rods 4 and 5.Head gear ridge 6.7 have complementary shapes and are configured so that they can move without interfering with each other.

The two head carriages 6.7 are arranged, for example, in FIG.
As shown in Fig. 3ζ2, each head carriage 6.7 is formed into a stepped frame shape, and has a rotationally symmetrical structure, with parts of the head carriages 6 and 7 being attached vertically facing each other. Guide rods 4 and 5 are slidably fitted to the side walls, respectively.

The end of one head carriage 6 has a guide block 6a which is slidably fitted into the guide rod 5 which is fitted into the other head carriage 7. The other head carriage 7 is also slidably fitted to the guide rod 4 to which the head carriage 6 is slidably fitted, and is provided with an id block 7a.

The stepper motors 2, 3 have pulleys 8, 9 on their output shafts, and each pulley 8.9 is wrapped around a steel belt 10 which is attached to the side surface of the head carriage 6.7.

As shown in FIG. 1 [F]), the steel belt 10 consists of a wide steel belt 11 having an elongated notch 11a at the center (X) and a narrow steel belt 12 that can fit into the notch 11a. each steel bell)
One end of 11.12 is fixed to both ends of the side wall of each headgear litho i; i6, 7 with a screw 13, and the free end side is wound around pulleys 8, 9. Therefore, when the boots 98 and 9 are rotated by the stepper motor 2゜3, one of the steel bells) ll and 12 is wound up by one force by the rotary blade E1]J, and the other is unwound.
The head carriage 6.1 can move forward and backward along the guide rods 4,5. In this embodiment, pulleys 8 and 9 driven by a step motor 2.3, a steel belt 8.9, and a steel belt 11.12 are used as means for moving the head carriage. Of course, other moving means such as a rack and pinion system may also be used.

As shown in FIGS. 2 and 3, each head carriage 6, 7 is equipped with a double-head arm 14.15. Each head arm 14.15 is used to press a magnetic head (not shown) against a magnetic disk, etc. Posts 16, 17 are provided for mounting springs.

In the embodiment described above, the head carriage 6.7 is moved by different means such as the stepper motor 2 and the stepper motor 2, respectively.
3, pulleys 8, 9, and a steel shaft 10 to be independently driven.

On the other hand, when it is desired to move the two head carriages 6.7 as one, the following procedure is performed.

That is, as shown in the first drawing, one head carriage 6
Attach the connecting member 18 to. The connecting member 18 is bent into an L-shape, and its vertical portion is fixed to the inner surface of the side wall of the helad carriage 6. Therefore, the head carriage 6 has a through hole 19 in its side wall for fixing the connecting member 18.
, 19, and is fixed by a screw 20 fitted into the through hole 19. The other end of the connecting member 18 is bifurcated, into which the head block 1a of the other head carriage 7 is fitted. The two head gears and ridges 6.7 are integrally connected via this connecting member 18.

When connected in this way, the stepper motor 2. which is the moving means on the head carriage 6 side. The pulley 8 and the mesh belt 10 are unnecessary and are therefore removed. Of course, in order to maintain the compatibility of the parts, screw holes 13a for fixing the left and right swivels 11 and 12 with screws 13 are pre-formed in the side wall of the rad carriage 6.

If such a structure is adopted, one head carriage 6
The side moving means can be freely attached and detached, and the head carriage can be driven either integrally or independently.

Of course, a similar structure is adopted on the other head carriage 7 side, and one stage of movement on the head carriage 1 side is omitted.
A structure may be adopted in which the moving means is provided on the head carriage 6 side and the head carriage 7 side is driven.

Since the present embodiment is constructed as described above, it is possible to selectively realize both independent drive and integral drive of the head carriage very easily.

By adopting an independent drive system, it is easy to position the heads corresponding to each media such as a magnetic disk, and even if one media is used while the other is used, the head carriages will not interfere with each other. Does not occur. In addition, since the track position can be easily detected, a track position storage circuit is not required and the structure is simplified, and the program code can also be simplified and costs can be reduced.

Furthermore, when moving from one medium to another, there is no need to return to track position "00" to confirm the track position.

Furthermore, if an integrated drive system is adopted, only one stepper motor is required as a drive source, which facilitates cost reduction.

By the way, the greatest advantage of the head moving device according to the present invention is that the force of either independent drive or integral drive of the helad carriage [
By adopting a structure that can satisfy the request even if a formula is required, it is possible to standardize parts, and common parts can be used without the need to design independently as a separate method. Therefore, it is easy to realize cost reduction in terms of design and number of parts.

As is clear from the explanation below, according to the present invention, a plurality of head carriages are provided with separate moving means that can be moved independently, and it is easy to meet the requirements for either integral drive or independent drive of the head carriages. Since it adopts a structure that selectively satisfies the following, it is possible to standardize parts, which is economically extremely advantageous in terms of design and number of parts, and has the excellent effect of achieving significant cost reductions. It will be done.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the present invention, and the first drawing is a perspective view showing the structure in the case of integral drive; and Fig. 3 are a plan view and a side view when independent drive of the Herad carriage is adopted. 1... Frame 2, 3... Stepper motor 4.5... Guide rod 6, 7...・-Rad carriage 8.9...]-!J 10...
・Steel belt 14.15...-Head arm 1
8...Connecting member [-Denko Sada-j gl+j)
(Spontaneous) II/(W5 ffi November 29 [1 #S + i'l l Mr. Secretary 1, 1% + 1 table small 111'i Sum 57 i + 4S, 2l1lt No. 70494 No. 2 Name of the invention - Throat moving device 3 Relationship with Nagisa who does sleeves 11 - 1% + 1 4 ¥l' + 1 Applicant's name Name: U Yano 7'lk 1 stock dowel 4 Substitute
Upper page 03 (268) 2481 (A0 Detailed description of the invention in the specification column Brief description of the drawing in the specification column Drawing 6 Contents of Sleeve II Contents of amendment as per the attached sheet ■) Specification page 5th page From line 12 L1 to page 6, line 5, 11 [steel belt lO...... can be done. ” [Steelheld lO,ll is being rolled up. Steel Pel 11O has an M11 long arm 10a on one side and a wide arm 1 on the other side, as shown in the developed view shown in Figure 1(C).
It has 0b. And the wide arm 10b has a slender arm 1.
A cutout hole 10c is formed through which the hole 0a passes. Furthermore, the steel belt 10 has several holes 10d, foe,! Of
is provided. mi + long arm 10a with cutout hole lO
When passed through the hole 10d, the steel belt forms a loop.The pulley 8 shown in FIG. 1(B) is fitted into this loop, and a screw (not shown) is screwed into the hole 10d. The center portion of the steel belt IO is fixed to a pulley 8. Next, both ends of the steel belt IO have holes 10e,
Screw screws 12° and 13 into each lof, and tap the tapped holes 1.
It is secured to the hand gear link 6 by taking and fixing them to 2a and 13a, respectively. In this way, the steel pel I.10 is wound around the pulley 8, and is further hardened at the hole 10d, so that when the pulley 8 rotates, Ij, l are applied in the direction of the rotational force. :.C steel-＼Le Jio(7) Mll long arm 10a and wide arm fob or pu, -ri No. 8 is here, I/J is released, hent geary, N6 is Kai/mouth, 1 and 4. Similarly, the rotation of the pulley 9 is caused by the steel belt 11.
77 along the 10th quint 5. ” will be revised. 2) Page 6, line 8 [1 of [Steelpel l11.12]
J to [Steelpelio, 11J]. 3) H? i 6rt? 's 19 rows 11 colors 2A2
0 row 11 cr + r steel belt L I OJ i r steel belt 10 , l l J L:, il[-
do. 4) From page 7, line 19] 1 to page 8, line 1]
In order to maintain...the tapped holes 13a are set to 1 by the steel pel 10, and the tapped holes 12a and 13 are set to 1 by the hiss 12.13. ” Revised 11. do. 5) Same page 10, No. 9 aj II, “View,” and “Second
The following is added: ``Figure 1 (C) is a perspective view showing the steel heald unfolded.'' 6) Same US l page 13? rlIc7) r10
J to rlO1llj number, 1 1E t
. 7) u'r in the figure Revised figure 1 as shown in the attached sheet 11. do.

Claims (3)

[Claims] (1) A plurality of Herad carriages that can be moved without interfering with each other and a moving means for moving these head carriages are provided, and the head carriage moving means can be selectively attached to any of the Herad carriages. A head moving device characterized in that the head moving device is configured to obtain an attached head. (2) The head moving device according to claim 1, wherein means for moving the herad carriage is independently attached to each head carriage. (3) A connecting member is provided to connect different head carriages, and a moving means is attached to only one of the connected head carriages, so that the other head carriage is moved integrally. A head moving device according to claim 1.