JPH0722736Y2 - Device fixing stand posture adjustment mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a mechanism for adjusting the attitude of an optical pickup with respect to the surface of an optical disc in an optical disc inspection apparatus such as a compact disc. The present invention relates to a fixed base posture adjusting mechanism for an optical pickup or the like, which can arbitrarily adjust the inclination around two axes.

[Prior Art] FIG. 5 shows a conventional example of an optical pickup fixing base attitude adjusting mechanism used in an optical disc inspection apparatus.

In the figure, 1 is an optical pickup support member,
1a is stuck.

The opposition element 1a has a rotational opposition with the opposition element 2a fixed to the intermediate support member 2, and its rotational position is fixed by a screw 1c.

The intermediate support member 2 has another opposition element 2b in a direction perpendicular to the opposition element 2a.
Is fixed, the opposition element 2b forms a rotational opposition with the opposition element 3a fixed to the intermediate support member 3, and its rotational position is the screw 2c.
Fixed by.

The intermediate support member 3 has the other element 3b in a direction perpendicular to the element 3a.
Is fixed, and the oppositional element 3b forms a rotational opposition with the oppositional element 4a fixed to the fixed base 4, and its rotational position is the screw 3c.
Fixed by.

The tilt of the optical pickup about two axes and the turning position about the vertical axis can be adjusted by turning each of the opposition elements in the direction of the arrow shown in the figure.

[Problems to be Solved by the Invention] In the above-mentioned conventional one, since the separate treatments are provided at the distant positions, the mechanism becomes large and heavy, and another adjusting mechanism for mounting the mechanism is provided. There is a drawback that it becomes a large scale and becomes expensive as a whole.

The present invention was made in view of the above points,
It is an object of the present invention to provide a fixed base posture adjusting mechanism such as an optical pickup which is small in size and light in weight, and which can arbitrarily adjust tilts about horizontal axes orthogonal to each other.

[Means for Solving the Problems] A device fixing base adjusting mechanism of the present invention is a supporting member for mounting a device whose tilt angle is adjusted, a fixing base, and a horizontal member in which the supporting member and the fixing base are orthogonal to each other. A connecting member that rotatably connects about an axis, an elastic member that is attached to the support member and the fixing base to restrict relative movement of these support members around a vertical axis, and the support member along the connecting member. In order to adjust the angle of the support member with respect to the fixed base by rotating the fixed base, the distance between the support member and each end of the fixed base is increased or decreased to oppose each of the opposite ends. And an adjusting member that reduces or increases the distance between the ends.

Further, the device fixing base adjusting mechanism of the present invention includes a supporting member for mounting a device whose tilt angle is adjusted, a fixing base, and a rotating member rotatably attached about a vertical axis of the fixing base. A connecting member that rotatably connects the supporting member and the rotating member and the fixed base to each other about a horizontal axis orthogonal to each other; and a connecting member that is attached to the supporting member and the rotating member and that rotates around the vertical axis. Ends of the support member and the fixed base in order to adjust the angle of the support member with respect to the fixed base by rotating the support member along the connecting member and the elastic member for restricting relative movement. And an adjusting member for increasing or decreasing the distance between the parts so as to decrease or increase the distance between the respective end parts facing each other.

Further, in each of the apparatus fixing base adjusting mechanisms, the connecting member is a combination of a spherical bearing and a spherical journal.

Further, in each of the device fixing table adjusting mechanisms, the adjusting member is a micrometer.

[Operation] According to the apparatus fixing base posture adjusting mechanism of the present invention, the supporting member of the apparatus such as the optical pickup can arbitrarily adjust the inclination about the horizontal axis orthogonal to each other through the spherical bearing with respect to the fixing base. The rotation of the spherical bearing about the vertical axis is restricted by an elastic plate provided between the optical pickup support member and the fixed base.

[Embodiment] An optical pickup fixing base attitude adjusting mechanism according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is a perspective view showing a first embodiment of the present invention,
FIG. 2 is a plan view showing the same embodiment, and FIG. 3 is a sectional view showing an AA cross section and a BB cross section in FIG.

In the figure, reference numeral 1 is an optical pickup support member, and a spherical journal 5 is clamped and fixed to the upper portion by a pressing plate 6.

A spherical bearing 7 fitted into the spherical journal 5 is fixed to the fixed base 4.

An elastic plate 8 is fastened between the optical pickup supporting member 1 and the fixing base 4 and the optical pickup supporting member 1
The rotation around the vertical axis of is regulated.

The preload springs 9 and 9 supported by the brackets 4b and 4b fixed to the fixed base 4 are in pressure contact with the brackets 1b and 1b fixed to the optical pickup support member 1, and the preload springs 9 and 9 are
Bracket 4 fixed to the base 4 on the opposite side of
Brackets 1c, 1c in which the tips of the micrometers 10, 10 supported by c, 4c are fixed to the optical pickup support member 1
Is in contact with.

By adjusting the heights of the tips of the micrometers 10 and 10, the tilt of the optical pickup support member 1 around the two axes is adjusted.

FIG. 4 is a perspective view showing a second embodiment of this invention.

In the figure, reference numeral 1 is an optical pickup support member, and a spherical journal 5 is clamped and fixed to the upper portion by a pressing plate 6.

A spherical bearing 7 fitted into the spherical journal 5 is fixed to the fixed base 4.

The rotating member 11 is rotatably supported by the fixed base 4 via a bearing 12.

The elastic plate 8 is fastened between the holding plate 6 fastened to the optical pickup support member 1 and the turning member 11,
The rotation of the optical pickup support member 1 with respect to 11 about the vertical axis is restricted.

The preload springs 9 and 9 supported by the overhanging portions 11b and 11b extending from the rotating member 11 are in pressure contact with the brackets 1b and 1b fixed to the optical pickup support member 1, and are opposite to the preload springs 9 and 9. On the side, the tips of the micrometers 10, 10 supported by the protruding portions 11c, 11c protruding from the rotating member 11 are in contact with the brackets 1c, 1c fixed to the optical pickup supporting member 1.

By adjusting the heights of the tips of the micrometers 10 and 10, the tilt of the optical pickup support member 1 around the two axes is adjusted.

In this embodiment, the optical pickup support member 1 can be rotated about the vertical axis by rotating the rotating member 11 about the vertical axis.

[Advantage of the Invention] According to the apparatus fixing base posture adjusting mechanism of the present invention, since the supporting member such as the optical pickup is supported by the spherical bearing,
It is possible to obtain the effect that the size and weight are reduced and the overall cost is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a plan view showing the same embodiment, and FIG. 3 is an A- line in FIG.
Sectional views showing a section A and a section BB, FIG. 4 is a perspective view showing a second embodiment of the present invention, and FIG. 5 is a perspective view showing a conventional example. 1 ... Optical pickup support member, 4 ... Fixed base,
5 ... Spherical journal, 6 ... Holding plate, 7 ... Spherical bearing, 8 ... Elastic plate, 9 ... Preload spring, 10 ... Micrometer, 11 ... Rotating member.

Claims (4)

[Scope of utility model registration request] 1. A supporting member for mounting a device whose tilt angle is adjusted, a fixed base, and a connecting member for connecting the supporting member and the fixed base so as to be rotatable about horizontal axes orthogonal to each other. An elastic member attached to the support member and the fixed base to restrict relative movement of these around the vertical axis; and a support member for the fixed base that is rotated by rotating the support member along the connecting member. An adjusting member for increasing or decreasing a distance between the supporting member and each end of the fixed base to adjust an angle, thereby decreasing or increasing a distance between each of the opposite ends. An apparatus fixing base adjusting mechanism, which is characterized in that 2. A support member for mounting a device whose tilt angle is adjusted, a fixed base, a rotary member rotatably mounted around a vertical axis of the fixed base, the support member and the rotary. A coupling member that rotatably couples the member and the fixed base to each other about a horizontal axis that is orthogonal to each other, and an elastic member that is attached to the support member and the rotation member and that restricts relative movements of these members around the vertical axis. And increasing the distance between each end of the support member and the fixed base in order to adjust the angle of the support member with respect to the fixed base by rotating the support member along the connecting member. An apparatus fixing base adjusting mechanism, comprising: an adjusting member for decreasing and increasing or decreasing a distance between respective end portions facing the end portion. 3. The apparatus fixing base posture adjusting mechanism according to claim 1, wherein the connecting member is a combination of a spherical bearing and a spherical journal. 4. The apparatus fixing base adjustment according to claim 1, wherein the adjusting member is a micrometer.