JPS6398880A - Magnetic recorder - Google Patents

Abstract

PURPOSE:To reduce noise by arranging a pressure spring having required elasticity in the slide moving direction and vertical direction of a carriage and fixing it to suppress the vibration of the carriage in moving the carriage by the drive of a lead screw. CONSTITUTION:A lead pin 3 having an angle equal to a lead angle of the lead screw 1 is provided to a pressure spring 7 and force in a direction of arrow C of a direction vertical to the slide moving direction of the carriage 2 is given by the elasticity of the pressure spring 7 to the lead pin 3. When the carriage 2 mounted with a recording/reproducing head 5 is moved along the guide shaft 4, the lead pin 3 receives vibration caused by the steep perturbation of the lead screw 1 and since the vibration is absorbed by the elasticity of the pressure spring 7, the noise at the slide and movement of the carriage 2 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention is directed to head feeding of a magnetic recording device 1) fi! Regarding the structure, for more details, please refer to the following article regarding the multiple carriage structure of the lead screw.

[Conventional technology]

The carriage structure in a conventional magnetic recording device was as shown in FIGS. 4 and 5.

Figure 4 shows f? of a conventional magnetic recording device. In FIG. 1, the carriage 1 engages with the lead groove] 1a of the lead screw 11 and carries the recording/reproducing head 15.
Move 2 in the direction of arrow A! A lead pin 13, which is a drive conversion means for l'JJ-1#L, is completely fixed to the carriage 12 by adhesive or press fitting. Also,
The carriage 12 is held by the force of a pressurizing spring 17 fixed to the carriage 12 and a lead pin 13. Then, the carriage 1 is rotated by the articulated rotation of the step motor IG, which is integrated with the lead screw 11.
2 is movable in the direction indicated by the arrow through a rigid lead spin 13 using guide shafts 1 and 1 fixed to the frame 10 at both ends (1'17 construction; Figs. 5 and 6).
The figure is a partially enlarged view of the engagement between the lead pin 13, the lead screw 11, and the pressurizing spring 17. In FIG. lead' (in contact with R11a, lead screw 1
” momentarily rotates and causes the carriage 12 to move by 8 vJ, the lead pin 13, that is, the carriage 12 momentarily moves in the direction of the arrow I.
As shown in Fig. 6, connect the lead pin 13 and the lead screw 1
A gap occurs in a. This gap is determined by the direction of rotation of the lead screw 11, and FIG. 6 shows the moment when the carriage 12 is moved in the direction of the arrow mJ+. Since the lead screw 11 is articulated, the lead screw 11 will stop at the next moment, return to the stationary state shown in FIG. As a result, the carriage 12 floats, and as shown in FIG. 6, the lead pin ]3 and lead ii! A gap occurs in ff1la. and,
This behavior is repeated every time the carriage moves.

The conventional carriage structure of the above structure has a lead pin 13
The carriage 12 was moved while vibrating in a direction perpendicular to the direction of movement of the carriage 12.

[Problems to be solved by the present invention]

As mentioned above, in the conventional technique 1, the means for driving and converting the rotation of the lead screw by the step/tub motor, that is, the lead pin, has a rigid structure, so when the carriage moves, the carriage vibrates and generates noise. However, this vibration not only shortens the life of the lead screw and lead pin, but also generates noise, which poses a serious problem of deteriorating the environment in which the magnetic recording device is used.

SUMMARY OF THE INVENTION The present invention is intended to solve these conventional problems, and aims to suppress vibration IIJ of the carriage and reduce noise even when the carriage is moved by articulated rotation of the lead screw.

[Means to solve the problem]

” Problems in Section 2 S.1! In order to solve this problem, the magnetic recording device of the present invention includes a carriage on which a recording/reproducing head is mounted, a pivot for holding the carriage slidably in the radial direction of a disc-shaped recording medium, and an articulated drive means, and A lead screw having an articulated rotation lid groove is driven by the articulated drive means, and is engaged with the lead lid and driven by the articulated drive of the articulated drive means to move the carriage to a predetermined position of the medium. In a magnetic recording device comprising a drive converting means provided in the gear ridge which causes sliding movement to a position,
Said section! #J is characterized in that a lead pin that engages with the lead pin is fixed to the drive means and provided with a required elasticity in a direction perpendicular to the direction of sliding movement of the carriage.

[Effect]

According to the magnetic recording device of the present invention configured as described above,
Even if the lead screw performs articulated rotation in which the lead screw starts and stops precisely, the drive conversion means smooths out the delicate articulated rotation by means of a required elasticity configured in a direction perpendicular to the IN movement direction of the carriage. This converts the movement into a sliding movement of the carriage.

〔Example〕

An embodiment of the present invention will be described below based on the drawings. FIG. 1 is a longitudinal cross-sectional view of the main part of the carriage of the magnetic recording device of the present invention. In FIG. A pressurized spring 7 having a shape is fixed to the carriage 2 with a screw 9. A rigid lead screw retainer 8 is fixedly disposed on the carriage 2 so that the carriage 2 does not tilt due to the elasticity of the pressurizing spring 70 and maintains a suitable level of control at Vrf. By configuring as described above, the lead pin 3 can be given the required elasticity and degree of freedom in the direction perpendicular to the sliding movement direction of the carriage 2, that is, in the direction of arrow C. Although not shown, the carriage 2 on which the recording/reproducing head 5 is mounted is attached to a guide l+ whose both ends are fixed to the frame.
h4 is arranged so as to be able to slide on the guide. The lead pin 3, which is elastically displaceable in the direction perpendicular to the sliding direction of the bore screw knee 2, is subjected to force caused by the 26-kana rotation of the lead screw knee I, but the lead pin 3 is held firmly. The elasticity of the pressurized spring 7 absorbs the vibration, converts the sliding movement of the carriage 20 into smooth sliding movement, and reduces noise when the carriage 20 moves.

Figure 2 shows the lead pin 3 at 9. This shows an embodiment in which the pressure spring 7 is fixed to the pressure spring 7, and the pressure spring 7, which is a temporary spring material, is provided with a lead pin fixing part 7d as seen in view P, and the lead angle of the lead screw 1 described above in FIG. The lead pins 3 are fixed at an equal angle θ. Further, the pressurized spring 7 is provided with a screw hole 7a for fixing it to the carriage 2 with the screw 9, and guide holes 7b and 7c for positioning with respect to the carriage, so that ease of assembly is improved. FIG. 3 shows a specific example of the oil in the pressurized spring, in which the engagement portion 7e with the lead groove is formed on the pressurized spring itself at an angle θ equal to the lead angle without using the lead pin or the like. Set up P
It is arranged so that it can be seen visually, and it satisfies the two functions of pressurized spring catch and dowel, making the carriage smaller and
Low cost is possible. In the above embodiment, the lead pin 3 that engages with the lead groove is fixed to the carriage 2 to provide the required elasticity in the direction perpendicular to the sliding direction of the carriage 2. By arranging the pressure spring 7, vibrations during the sliding movement of the carriage 2 are suppressed and smooth fLf movement is obtained, which effectively reduces noise when the carriage 2 slides mJJ.

(Effects of the Invention) As explained above, according to the configuration of the present invention, the pressurized spring that fixes and holds the lead pin while having the required elasticity in the direction perpendicular to the 11?U1J direction of the carriage is attached to the carriage. The simple structure of disposing and fixing has the effect of reducing noise during sliding movement of the carriage.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of main parts of a carriage of a magnetic recording device according to the present invention, FIGS. 2 and 3 are plan views of a pressurized spring according to the present invention, and FIG. 11 is a diagram of a conventional magnetic recording device. A perspective view of the main parts of the carriage, and FIGS. 5 and 6 are partially detailed views of a conventional magnetic recording device, and are partially enlarged views of a lead pin and a lead screw, respectively. 1...Lead screw 2...Carriage 3...Lead pin 4...Guide shaft 5...・Head 7: Pressurized spring or higher Applicant: Seiko Epson Co., Ltd. Agent Patent attorney: Tsutomu Mogami (10 others) Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] It is equipped with a carriage on which a head for recording and reproducing is mounted, a pivot shaft for holding the carriage slidably in the radial direction of a disk-shaped recording medium, and a drive drive means, and articulately rotates as driven by the drive drive means. , a lead screw having a lead groove, and a drive conversion provided on the carriage that engages with the lead screw and is driven by the drive of the drive means to slide the carriage to a predetermined position on the medium. In the magnetic recording device, a lead pin that engages with the lead groove is fixed to the drive conversion means, and the drive conversion means is provided with a required elasticity in a direction perpendicular to the sliding direction of the carriage. A magnetic recording device characterized by: