JP3711030B2 - Optical pickup device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical pickup device according to a front monitor support method for receiving a part of a laser beam and adjusting a laser output in an optical pickup device incorporated in a CD-R player or the like.
[0002]
[Prior art]
As an example of mounting the front monitor provided on the optical pickup used for the CD-R, the front monitor is pressed against the housing, and both ends of the front monitor are screwed by mounting brackets with L-shaped hooks with leaf springs that are fixed to the housing. It is configured to be supported by a stopper and fixed by a screw lock.
[0003]
[Problems to be solved by the invention]
When the front monitor is mounted at a designated place, the front monitor is a small part, and a flexible board is connected to the front monitor, and it is difficult to arrange the front monitor in a narrow place in the housing due to the urging force of the flexible board. Further, there is a problem that even if pressed to a designated place, the method of fixing the fixing bracket with a screw forces a finer work.
[0004]
The present invention is intended to provide an optical pickup device that solves such problems.
[0005]
[Means for Solving the Problems]
A positioning guide for mounting the front monitor is provided on the housing, a fold is formed on the flexible board connecting the front monitor on the opposite side of the guide to the front monitor, and the bent portion is between the front monitor and the inner wall of the housing. The front monitor is pressed against the guide guide of the front monitor by the repulsive force of the bent portion.
[0006]
【Example】
FIG. 1 is an exploded perspective view showing a main part of an embodiment of the present invention.
[0007]
In FIG. 1, reference numeral 1 denotes a housing in which main parts of the pickup device are incorporated, and 2 is a case where information is written on a disc such as a CD-R, and a part of the laser beam emitted from the laser unit is measured This is a front monitor for determining the amount of laser output by writing, and a light receiving surface 3 for converting laser light into an electrical signal is provided at the center.
[0008]
4 is arranged on the back of the front monitor 2 and is provided with a terminal board on which input / output terminals are provided, 5 is a flexible board connected to the back of the terminal board 4, and 5 a is an external electrical component from the flexible board 5. The external arrangement part 5b is connected to the flexible substrate 5 in the same manner as 5a, and the internal arrangement part 6 is connected to the electrical components in the housing, and 6 is a guide for easily arranging the front monitor 2 at a designated place. A guide 7 is a positioning guide that is positioned at a specified position together with the guide guide 6 when the front monitor 2 is disposed.
[0009]
8 is an inner wall surface provided inside the housing 1, and 9 is a flexible substrate 5 connected to the rear surface of the front monitor 2 as described above. The flexible substrate 5 is folded in a V shape in the vicinity of the front monitor 2. It is a bent part.
[0010]
Reference numeral 10 denotes a recess for adhering the front monitor 2 and the terminal board 4 provided in the housing, and 11 denotes an adhesive part for filling the adhesive and the terminal board 4 provided on the back of the front monitor 2 with an adhesive. It is.
[0011]
Next, the assembly method will be described. First, the front monitor 2 is placed on the guide guide 6 and the positioning guide 7 provided on the housing 1. When the front monitor 2 is placed, the bent portion 9 of the flexible substrate 5 is attached to the inner wall 8. The front monitor 2 is pressed against the guide guide 6 by the repulsive force of the bent portion 9 and is positioned by the positioning guide 7 in the direction of the arrow A. In this case, the light receiving direction of the front monitor 2 is guided by the guide guide 6 and the positioning guide 7.
[0012]
As a result, the front monitor 2 is pressed by the housing 1 and disposed at a designated position.
[0013]
In a state where the front monitor 2 is disposed at a designated position, an adhesive is filled into the bonding portion 11 between the recess 10 provided in the housing 1 and the terminal board 4 and is fixedly bonded.
[0014]
【The invention's effect】
According to the present invention, a positioning guide for mounting the front monitor is provided on the housing, a bend is formed on the flexible substrate to which the front monitor is connected, on the opposite side to the guide guide with respect to the front monitor, and the bent portion is formed between the front monitor and the housing. Since the front monitor is pressed against the guide guide of the front monitor by the repulsive force of the bent part, the front monitor is pressed against the housing by hand, and the housing is mounted by the mounting bracket. There is no need for troublesome work such as screwing to the front guide. The front guide is fitted into the guide guide, and the flexible cable connected to the front monitor is bent into a V-shape and pressed against the inner wall of the housing. Can be placed at a designated location, And an adhesive for fixing the reduction of significant working time because it easily adhere by filling the recess, and has the advantage that the cost can be reduced since no use mounting bracket.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of an optical pickup device showing an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Housing 2 Front monitor 3 Light-receiving surface 4 Terminal board 5 Flexible board 6 Guide guide 7 Positioning guide 8 Inner wall surface 9 Bending part 10 Recessed part 11 Adhesive part

Claims (1)

In the optical pickup device that controls the laser beam emitted from the laser element by the light receiving output received by the front monitor, the laser monitor and the front monitor are installed in the housing. A bent portion is formed on the flexible substrate to be connected on the opposite side of the positioning guide with respect to the front monitor, the bent portion is disposed between the front monitor and the inner wall surface of the housing, and the front monitor is moved by the repulsive force of the bent portion. An optical pickup device, wherein the optical pickup device is disposed by being pressed against a positioning guide of a front monitor.

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