Holder mounting structure

Details Holder mounting structure Holder mounting structure

2001-05-23

2003-04-01

Tupper, Robert S. (Department: 2652)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

06542329

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to holder mounting structures, and more particularly to a structure by which a holder for accommodating a cartridge for use in disk recording or playback devices is mounted on a chassis equipped with optical components.
BACKGROUND OF THE INVENTION
FIG. 12
is an exploded perspective view of a conventional disk recording or playback device.
A holder
2
has opposite sides of its base end pivoted as at
25
,
25
a
to a chassis
1
equipped with a turntable
73
and a pickup
72
. A cartridge
6
having a disk
60
enclosed therein is inserted into the holder
2
. In the following description, the direction in which the cartridge
6
is inserted into the holder
2
will be referred to as “front,” and the direction in which the cartridge
6
is unloaded from the holder
2
as “rear.”
The pivoted portion
25
comprises a first pivot
9
projecting outward from one side plate of the holder
2
and fitted in a bracket
5
fastened to the chassis
1
with a screw
13
. The other pivoted portion
25
a
comprises a second pivot
90
projecting outward from the other side plate of the holder
2
and fitted in a hole
11
in a lug
10
provided upright on the chassis
1
. The bracket
5
comprises an support wall
51
orthogonal to the upper surface of the chassis
1
and having a first hole
55
for the first pivot
9
to extend therethrough, and a base
52
having a second hole
57
with the screw
13
inserted therethrough.
To mount the holder
2
on the chassis
1
, the first pivot
9
is fitted into the first hole
55
in the bracket
5
in advance. The holder
2
and the bracket
5
in this state are carried toward the chassis
1
, the second pivot
90
is fitted into the lug
10
and the bracket
5
is placed on the chassis
1
. The screw
13
is then inserted through the second
57
and driven into a screw hole
14
in the chassis
1
to fasten the bracket
5
to the chassis
1
. Since the bracket
5
as fitted to the holder
2
is attached to the chassis
1
, the screw hole
14
needs to be provided at a position not to be covered with the holder
2
.
The conventional device therefore has the following problems.
The screw hole
14
is formed in the chassis
1
, as positioned externally of the holder
2
. This makes the chassis
1
larger.
If the bracket
5
as fitted to the holder
2
is attached to the chassis
1
, both the bracket
5
and the holder
2
must be held by hand for attaching, hence a low work efficiency. In view of this drawback, the applicant conceived the idea of fitting the holder
2
to the bracket
5
which is fastened to the chassis
1
in advance. In this case, it appears feasible to attach the holder
2
to the bracket
5
with opposite side plates
26
,
26
of the holder
2
deflected as indicated in
FIG. 13
, whereas the holder
2
is prepared generally from a steel sheet and is therefore difficult to deflect.
Accordingly, it appears possible to fit the holder
2
to the bracket
5
from lateral one direction without deflecting the side plates
26
,
26
as will be described later. However, if the holder
2
backlashes laterally, the disk
60
in the cartridge
6
will not be placed on the turntable
73
accurately, so that there arises a need to restrain the holder
2
from backlashing.
SUMMARY OF THE INVENTION
An object of the present invention is to make a holder mountable on a chassis of reduced size with an improved work efficiency and to restrain the holder from backlashing laterally.
A lateral shift restraining piece
53
is positioned on a chassis
1
at a small distance away from an inner side surface of the holder
2
, is opposed to a side plate
26
of the holder
2
in a horizontal posture, and is out of opposed relation with the side plate
26
when the holder
2
is in an upright posture.
A pivotal movement restraining piece
54
is elastically deformably provided on the chassis
1
for preventing the holder
2
from opening excessively by the contact of an end thereof with the holder
2
when the holder
2
is pivotally moved upward.
The present invention has the following advantages because of the construction described.
1. To mount the holder
2
on the chassis
1
, the holder
2
is positioned upright with the side plate
26
opposed to a support wall
51
. The holder
2
is moved laterally toward the support wall
51
, causing the support wall
51
to pivotally support the holder as at
25
. At this time, the lateral shift restraining piece
53
is not opposed to the side plate
26
and will not interfere with the movement of the holder
2
.
Next, the holder
2
is pivotally moved downward about the pivot portion
25
. The restraining plate
53
is opposed to the side plate
26
, with the holder
2
in its horizontal posture, and is positioned inwardly of the side plate
26
, whereby the holder
2
as attached to the support wall
51
is restrained from shifting laterally.
Since the holder
2
can be mounted on the chassis
1
after the support wall
51
is provided on the chassis
1
in advance, there is no need to form a screw hole
14
at a position which will not be covered with the holder
2
as in the prior art. This serves to make the chassis
1
small-sized.
2. When the holder
2
is pivotally moved from the upright posture to the horizontal posture to mount the holder
2
on the chassis
1
, the pivotal movement restraining piece
54
is elastically deformed by being pushed by the holder
2
, permitting the holder
2
to move past the restraining piece
54
. When pivotally moved upward, the holder
2
comes into contact with the end of the pivotal movement restraining member
54
, which in turn prevents the holder
2
from opening excessively.
Because the holder
2
mounted on the chassis
1
is restrained from opening to excess in this way, it is unlikely that the holder
2
will be brought to the upright posture to become released from the chassis
1
inadvertently.


REFERENCES:
patent: 4573093 (1986-02-01), Obama et al.
patent: 4734801 (1988-03-01), Takeda et al.
patent: 4740937 (1988-04-01), Watanabe
patent: 5124854 (1992-06-01), Iyota et al.
patent: 6144629 (2000-11-01), Kurita et al.
patent: 6239945 (2001-05-01), Inoue et al.
patent: 6344945 (2002-02-01), Ariyoshi

Affiliated with

Also associated with

Rating

Holder mounting structure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Holder mounting structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Holder mounting structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3025982