JP2585059Y2 - Optical axis adjustment component holding structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holding structure of an optical axis adjusting component suitable for an optical disk player, and more particularly to a holding structure of a tilt sensor for receiving reflected light from a reflecting surface and detecting an inclination angle with respect to the reflecting surface. .

[0002]

2. Description of the Related Art FIG. 3 shows an example of a conventional tilt sensor holding structure. As shown in the figure, the tilt sensor holding member 2 to which the tilt sensor 1 is fixed has an L shape,
Holes 2a and 2b, a notch 2c, and a fool hole 2d are provided on the side surface.

When adjusting the tilt angle by attaching the tilt sensor to the base 3, the hole 2 a of the tilt sensor holding member 2 is used.
Into the projection 3a provided on the base 3,
Lightly tighten the screw 4 to the base 3 through d.

With the tilt sensor holding member 2 in the semi-fixed state with respect to the base as described above, the projection of the adjusting tentacle 5 of the tilt adjusting device is engaged with the notch 2c and the hole 2b, and as shown in FIG. As shown, the adjustment angle θ around the protrusion 3a
Is adjusted by turning the adjustment tentacle 5. After the adjustment, the screw 4 is tightened to fix the tilt sensor holding member 2 to the base.

[0005]

[Problems to be Solved by the Invention] In the above-mentioned conventional tilt sensor holding structure, it is difficult to control the tightening torque to make a semi-fixed state with a screw at the time of adjusting the tilt angle. Since it is difficult to move and fine adjustment cannot be performed, there is a disadvantage that the work is uneven and the quality is not stable.

The present invention has been made in view of the above points, and an object of the invention is to provide a tilt sensor holding structure in which the inclination adjustment operation is easy and the quality is stable.

[0007]

The holding structure of the optical axis adjusting component of the present invention comprises a holding member formed of a spring material to which the optical axis adjusting component having a U-shaped portion is fixed, and a plate-shaped portion. A base provided with, a hole provided on the holding member and a projection provided on the base are fitted together and the plate-shaped portion is sandwiched by the U-shaped portion, and the holding member is adjusted by an adjusting tentacle. After rotating and adjusting the tilt angle of the optical axis adjustment component, the holding member and the plate-shaped portion are bonded and fixed.

In the holding structure of the optical axis adjusting part, an adjusting tentacle which is screwed with a screw rod into a space surrounded by the cut-and-raised portion provided on the holding member and is movable by the rotation of the screw rod is inserted. The tilt angle of the optical axis adjustment component is adjusted by rotating the screw bar, and then the holding member and the plate-shaped portion are bonded and fixed.

Further, the holding structure of the optical axis adjusting component of the present invention is a holding member to which the optical axis adjusting component having a U-shaped portion and a cut-and-raised portion formed with a screw hole is fixed. And an adjustment screw for adjusting the tilt angle of the base and the optical axis adjustment component provided with the plate portion and the projection,
The hole provided in the holding member and the projection provided on the base are fitted together and the plate-shaped portion is sandwiched by the U-shaped portion, and the projection is inserted into a cutout formed by the cut-and-raised portion. After inserting the adjusting screw into the cut-and-raised portion, bringing the tip into contact with the projection, and rotating the adjusting screw to adjust the tilt angle of the optical axis adjusting component, the holding member and the plate The shape is adhered and fixed.

In the holding structure of each optical axis adjusting component, a hole is provided in the holding member, and after holding and adjusting the optical axis adjusting component, an adhesive is poured from the hole. Things.

Further, in the holding structure for each of the optical axis adjusting parts, the holding member is a metallic or resin molded product.

[0012]

According to the optical axis adjusting component holding structure of the present invention,
The hole provided on the holding member of the optical axis adjustment component and the projection provided on the base are fitted, and the holding member of the optical axis adjustment component is rotatable around the projection on the base. At this time, the U-shaped portion of the holding member of the optical axis adjustment component elastically sandwiches the plate-shaped portion of the base, and the holding member of the optical axis adjustment component is in a semi-fixed state with respect to the base.

In this state, the tilt angle is adjusted by, for example, engaging the adjusting tentacle of the tilt tilt adjusting device with the holding member of the optical axis adjusting component. After the adjustment, the holding member of the optical axis adjustment component may be fixed to the base using an adhesive or the like.

The elasticity of the spring is determined by the thickness of the plate or the width of the U-shaped portion,
By controlling the bending angle and the like, variations can be reduced, the semi-fixed state is stable, adjustment is easy, and quality is stable. In addition, the work can be made semi-fixed only by fitting the holding member of the optical axis adjustment component to the base, so that the number of steps can be reduced.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A tilt sensor holding structure according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the first of the present invention.
2 shows a tilt sensor holding structure according to an embodiment of the present invention. As shown in the figure, the tilt sensor holding member 2 to which the tilt sensor 1 is fixed is made of a metal spring material, and a part of the L-shape is folded back to form a U-shape.

Holes 2a, 2b, 2e and cut-and-raised portions 2f, 2f are provided on the side surfaces, and bent holes 2g, 2g are provided in the bent portions.

When the tilt sensor holding member 2 is inserted into the base 3 as shown in the figure, and the hole 2a of the tilt sensor holding member 2 is fitted with the projection 3a provided on the base 3, the U-shaped portion of the tilt sensor holding member 2 is formed. The base is elastically clamped to be in a semi-fixed state.

In the tilt sensor holding structure, the tilt angle can be adjusted by any of the rotary adjustment tentacle 5 and the horizontal movement adjustment tentacle 6. When using the rotary adjustment tentacle 5, the protrusion of the adjustment tentacle 5 of the tilt inclination adjusting device is inserted into the hole 2b.
And 2e, the angle around the projection 3a is adjusted by turning the adjusting tentacle 5. After the adjustment, the hole 2g,
Pour adhesive from 2g and hold tilt sensor holding member 2
To the base.

When the horizontally movable adjusting tentacle 6 is used,
The adjustment tentacle 6 of the adjustment device is cut into the raised portions 2f, 2f, and the tilt sensor holding member 2 is rotated around the projection 3a by the adjustment tentacle 6.

Although not shown, the adjusting device rotatably holds a threaded bar 7 screwed with the adjusting tentacle 6.
Lock in place. By turning the screw rod 7, fine inclination adjustment can be easily performed. Note that the cut-and-raised portions 2f, 2
f may be formed in an arbitrary direction, and the direction of the screw rod 7 may be a vertical direction.

FIG. 2 shows a tilt sensor holding structure according to a second embodiment of the present invention. In this embodiment, a leaf spring portion 2h is provided at an end of the tilt sensor holding member 2, and
When the tilt sensor holding member 2 is inserted into the base 3 and the hole 2a of the tilt sensor holding member 2 is fitted with the projection 3a provided on the base 3, the tilt sensor holding member 2 is in a semi-fixed state. Displaced counterclockwise due to elasticity.

The adjusting screw 8 screwed into the screw hole of the cut-and-raised portion 2f of the tilt sensor holding member 2 comes into contact with the projection 3b provided on the base, and the tilt angle can be adjusted by turning the adjusting screw 8. The protrusion 3b and the cut-and-raised portion 2f can be provided in any direction, and the adjustment screw 8 can be set in the vertical direction. In the embodiment, the tilt sensor holding member 2 is made of metal, but a resin molded product may be used.

[0023]

According to the holding structure of the optical axis adjusting component of the present invention, the semi-fixed state can be achieved simply by inserting the optical axis adjusting component member into the base, and the tilt angle adjusting operation is easy. Further, a semi-fixing screw is not required, and the number of parts is reduced.

In the semi-fixed state, the elasticity of the spring is used. Variations in the semi-fixed state can be eliminated by controlling the thickness of the spring material, the width of the U-shaped portion, the bending angle, and the like. , Accurate adjustment can be made and the quality is stable.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a tilt sensor holding structure according to a first embodiment of the present invention, and FIG. 1B is a side view showing the tilt sensor holding structure.

FIG. 2A is a perspective view showing a tilt sensor holding structure according to a second embodiment of the present invention, and FIG. 2B is a side view showing the tilt sensor holding structure.

FIG. 3A is a perspective view showing an example of a conventional tilt sensor holding structure, and FIG. 3B is a front view showing the tilt sensor holding structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilt sensor 2 Tilt sensor holding member 3 Base 4 Screw 5 Adjusting tentacle 6 Adjusting tentacle 7 Screw rod 8 Adjusting screw

Claims (5)

(57) [Scope of request for utility model registration] 1. A holding member formed of a spring material and having an U-shaped portion to which an optical axis adjusting component is fixed, and a base provided with a plate-shaped portion, wherein a hole provided in the holding member is provided. After fitting the projection provided on the base and holding the plate-shaped portion between the U-shaped portions, rotating the holding member with an adjusting tentacle to adjust the tilt angle of the optical axis adjustment component, and then holding the plate. A holding structure for an optical axis adjusting component, wherein a member and a plate-like portion are bonded and fixed. 2. An adjusting tentacle which is screwed into a space surrounded by a cut-and-raised portion provided in the holding member and is movable by rotation of the screw bar, and rotates the screw bar. 2. The holding structure for an optical axis adjusting component according to claim 1, wherein after the tilt angle of the optical axis adjusting component is adjusted, the holding member and the plate portion are bonded and fixed. 3. A holding member to which an optical axis adjustment component formed of a spring material and having a cut-and-raised portion having a U-shaped portion and a screw hole is fixed, and a base having a plate-shaped portion and a projection. And an adjusting screw for adjusting the tilt angle of the optical axis adjusting component, wherein a hole provided in the holding member and a projection provided on the base are fitted together and the plate-shaped portion is sandwiched by the U-shaped portion. By inserting the projection into the notch formed by the cut-and-raised portion, screwing the adjusting screw into the cut-and-raised portion, bringing the tip into contact with the projection, and rotating the adjusting screw. A holding structure for an optical axis adjusting component, wherein the holding member and the plate-shaped portion are bonded and fixed after adjusting the tilt angle of the optical axis adjusting component. 4. The light according to claim 1, wherein a hole is provided in the holding member, and after holding and adjusting the optical axis adjusting component, an adhesive is poured from the hole. Holding structure for axis adjustment parts. 5. The holding structure for an optical axis adjusting component according to claim 1, wherein said holding member is a metallic or resin molded product.