JPH01211378A - Guide shaft fixing member - Google Patents

Abstract

PURPOSE:To improve the positioning accuracy of a guide shaft by pressing down the guide shaft from the upper part of it with the aid of a fixing member consisting of a spring material, bending one part of the fixing member and forming a stopper which prevents the longitudinal direction movement of the guide shaft. CONSTITUTION:The stopper 14b which prevents the longitudinal direction movement of the guide shafts 12 by respectively disposing the two guide shafts 12 to the side of two positioning members provided on a substrate 10, pressing down these shafts 12 from the upper part of them with the aid of the fixing member 14 consisting of the spring material and bending one part of the fixing member 14. Thus, the positioning accuracy of the guide shaft is improved. Besides, when the guide shaft is attached, the guide shaft is not moved before and behind, the fixing member is not rotated by making a set screw as a center and the number of parts can be reduced. As the result of that, it can be cost down.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a head for processing information on a recording medium in an apparatus for recording information on a recording medium and/or reproducing the recorded information. The present invention relates to a guide shaft fixing member whose portion is movable relative to a recording medium.

[Prior Art] In conventional fixing of a guide shaft, as shown in FIG. 4, a positioning member 2, which serves as a reference for positioning, is screwed to a substrate 1, and a guide shaft 3 is brought into contact with the substrate 1 and the positioning member 2. A fixing member 4 made of a spring material is fixed by a set screw 5.

Alternatively, as shown in FIG. 5, the positioning member 2 is formed to have a convex cross-section, and two guide shafts 3 are simultaneously positioned and fixed on both shoulders by a single fixing member 6.

Note that 7 is an optical head portion slidably provided on the guide shaft 3.

[Problems to be Solved by the Invention] However, in the case of FIG. 4, the number of parts increases to fix the two guide shafts 3, and the fixing member 4 rotates around the set screw 5. There is a problem, in the case of FIG. 5, that the two guide shafts 3 move in the longitudinal direction during installation.

[Object of the Invention] An object of the present invention is to provide a guide shaft fixing member that solves the above-mentioned problems and improves the positioning accuracy of the guide shaft.

[Summary of the Invention] The gist of the present invention to achieve the above object is to record and/or reproduce information by guiding a recording and/or reproducing head with respect to a recording medium by two guide shafts. In an information recording and reproducing apparatus, the two guide shafts are respectively arranged beside two positioning members provided on a substrate, and these guide shafts are pressed from above by a fixing member made of a spring material, and the fixing member This is a guide shaft fixing member characterized in that a part thereof is bent to form a stopper that prevents the guide shaft from moving in the longitudinal direction.

[Embodiments of the Invention] The present invention will be described in detail based on embodiments illustrated in FIGS. 1 to 3.

Fig. 1 is a perspective view of an embodiment of the guide shaft fixing member according to the present invention, and Fig. 2 is a side view.
is a substrate, and 11 is two pins that serve as positioning members press-fitted into the substrate 10. These pins 11 are preferably made of metal, and a guide shaft 12 is arranged inside each pin 11, and these pins 11 are preferably made of metal. The guide shaft 12 is pressed between the base plate 10 and the pin 11 by a fixing member 14 made of a metal plate having spring properties and attached by a set screw 13.

FIG. 3 is a plan view of the fixing member 14 before bending, in which the holding portion 14a that contacts the guide shaft 12 is bent diagonally upward at an angle of 45 degrees, and a stopper that restricts the axial movement of the guide shaft 12. The portion 14b is the holding portion 14
It is bent 90 degrees downward with respect to a. In addition, 1
4c is a hole for closing the spout.

In order to make the fixing member 14 exhibit spring properties, the fixing member 14 is elastically deformed between the main body of the fixing member 14 and the substrate lO when the guide shaft 12 comes into contact with the holding portion 14a of the fixing member 14. It is desirable to provide a clearance like this.

[Effects of the Invention] As explained above, the guide shaft fixing member according to the present invention has the following features:
The positioning accuracy of the guide shaft is improved, and when the guide shaft is installed, the guide shaft does not move back and forth, and the fixing member does not rotate around the set screw, which reduces the number of parts and reduces costs. It is valid.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the guide shaft fixing member according to the present invention, with Figure 1 being a perspective view, Figure 2 being a side view, and Figure 3 being a side view.
The figures are plan views of the fixing member before bending, FIG. 4 is a perspective view of a conventional example, and FIG. 5 is a perspective view of another conventional example. 7 is a head, 10 is a substrate, 11 is a pin, 12 is a guide shaft, 13 is a set screw, 14 is a fixing member, 14a is a holding portion, and 14b is a stopper portion. Patent applicant: Canon Co., Ltd. Figure 2 No. 4b

Claims (1)

[Claims] 1. Place the recording and/or playback head on the recording medium.
In an information recording and reproducing device that records and/or reproduces information by being guided by a guide shaft of a book, two
The two guide shafts are respectively arranged beside the positioning member, and these guide shafts are pressed down from above by a fixing member made of a spring material, and the fixing member is partially bent so that the guide shafts are fixed. A guide shaft fixing member characterized in that a stopper is formed to prevent movement in the longitudinal direction.