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[Inc.] 4 channel source balance volume O Application Japanese Patent Application No. 46350280 Application to Japanese Patent Application No. 46 (1971) May 21 Open to Japanese
Patent No. 48-1854 @ @ 48 (1973) Jan. 11 0 inventor Yoshinobu Ozaki Tokyo Detailed
description of the 7 inventions of 7 applicants within the 7 Alps Electric Co., Ltd. Oda-ku, Ota-ku,
Tokyo Alps Electric Co., Ltd. 1 Oda-ku, Oya-ku, Tokyo This invention describes 4 channel
channels, 4 channel records Two variable resistance elements pre-arranged according to the 4channel source balance volume used for the reproduction equipment, that is, the 4-channel
source system stereo etc. A total of two in a set of two Or each element is connected to a total of
four rocking levers, and one rocking end of one knob provided above the rocking levers The four
variable resistance elements are adjusted at once by moving the lever to the lever, moving freely
in the direction of the other end of the knob via the flexible fulcrum, and four sound sources such
as the four-channel source 0 system stereo. In order to balance the volume of Conventionally, as
a so-called multi-axis simultaneous adjustment device of this type, semicircular arc-like
interlocking plates such as in Japanese Utility Model Publication No. 43-2196 are rotatably
mounted in a cross polymerization manner, respectively. The semi-circular interlocking plate is
difficult to store in the chassis to which each part is attached, and makes the device itself
unnecessarily thick and large. When incorporating this adjusting device into the abovementioned playback device, it has the very disadvantageous disadvantage of occupying a large
space, which has a considerable influence on the panel design etc. of these playback devices. In
addition, the device having such a configuration has an extremely large number of parts (and it
can not be prevented that the assembly work is complicated and the work efficiency is low, and
the unit parts become expensive to such an extent that their spread is difficult) Met. The present
invention solves such drawbacks, namely [1111111 EndPage: 11, thickness (and becoming a
large-sized device and having a large number of parts 21 parts is complicated assembly work is
complicated, and thin, small and having a small number of parts It is intended to provide this
kind of balance volume that can be configured with a small (very simple assembly operation).
Invention Example 4 The channel source .phi. Balance volume will be described according to the
drawings. FIG. 1 and FIG. 2 show the first embodiment at first, 1 is a knob, and so-called It has a
pivot 1a (that is, a pivot that can freely rotate in any direction) 1a and a locking core 1b at the
lower end.
A swing lever 2.3 has a long slit 2a and a long slit 3a, and one end of the swing lever needs to be
a variable resistance element (in this case, in principle, a dual-type rotary volume etc.). 4) It has
fitting frames 2b and 3b which are fitted to the 4, 50 rotating shafts 4a and 5a and serve as
pivots for rocking interlocking. Reference numeral 6 denotes a frame, a supporting point
including a semi-spherical recess on which the through holes 6 and 63 for fitting the projections
of the fitting frames 2b and 3b of the rocking levers 2 and 3 and the swivel 1a of the knob 1 are
placed 61 and a locking hole 6 □ of the locking piece 7a of the support plate 7; The reference
numeral 8 denotes a substrate, which is a variable resistance element 4, 50 rotation shaft 4a. The
through hole 5a is penetrated and has a through hole fixed by the bearing portion 4b, 5b or the
like, and a relief hole 8 □ of the locking core 1b of the knob 1. As shown in FIG. 2, the variable
resistance elements 4 and 5 are fixed to the substrate 8 by means of 4a and 5b, etc., and the
rotary shafts 4a and 5a are fitted with the fitting frame 2b of the rocking lever 3b are
respectively fitted, and the fitting frame and the rotary shaft are mounted so that they can rotate
integrally. After that, the slit 2a of the rocking levers 2 and 3. In the rectangular small hole 23
made by crossing 3a, the frame 6 to which the knob 1 and the supporting point plate 7 are
attached in advance is brought close from the upper side of the drawing and the locking core 1b
of the knob 1 is penetrated. When the locking core 1b is locked in the rectangular small hole 23
as shown in the second illustration, the rectangular small hole 23 is guided by the locking core
1b in any direction when the knob 1 is moved in any direction. The rocking levers 2 and 3 rock
to the centers of the fitting frames 2b and 3b together with 1b. At this time, the rotary shafts 4a
and 5a of the variable resistance elements 4 and 5 rotate together with the rocking levers 2 and
3. W111111 Next, FIG. 3 and FIG. 4 show the second embodiment, in which four variable
resistance elements 4, 4 'and 5, 5' are directly connected to the substrate 8 together with the
conductive shield ring 9 and the resistors and the conductive Material is provided by printing,
and correspondingly, the four swing levers 2, 2 ', 3, 3' are fitted into the fitting frame 2b. 2b ', 3b
and 3b' are respectively fitted in the fitting holes of the substrate 8 and provided rotatably.
Sliders 2cj 20 ', 3c, 3c' are attached to the arms of the swing levers 2, 2 ', 3, 3', respectively, as
shown in the fourth variable resistance elements 4, 4 '. Contact on 5.5 '. The slit portions 2a, 2a ',
3a and 3a' of the rocking levers 2, 2 'and 3 3' are formed in a stepped manner, respectively, and
are disposed in sequence as shown in FIG. The lock core 1b of the knob 1 is locked by
penetrating the individual slits 2a 12a ', 3B, 3a'.
When the knob 1 is moved in an arbitrary direction, the respective rocking levers 2 '2', 3 '3' are
guided to this, and simultaneously rocked about the fitting frames 2b, 2b ', 3b, 3b', Sliders 2c, 2c
', 3c and 30' are slid. FIG. 5 shows a third embodiment of the present invention, which in the
second embodiment is a fitting frame 2b, 2b ', 3b, 3b' of each rocking lever 2, 2 ', 3 3'. The upper
and lower projections are fitted to the frame 6 and the substrate 8 to further strengthen the
support. (The figure shows only the rocking lever 3). Further, FIG. 6 shows the fourth
embodiment, which improves on the fact that all the embodiments described so far are variable
angles of the variable resistance element which is the rotation angle of the rocking lever itself.
Gears 2d, 3d are fan-shaped at the fitting frames 2b, 3b, and are meshed with gears 4c, 5c
attached to variable resistance elements 4, 50 rotating shafts 4a, 5a to make variable resistors 4,
50 variable angles To expand the (These gears naturally have different diameters). Here, the
rocking members 2.3 have projections (see the figure) which are provided on the fitting frames
2b and 3b in the fitting holes 63 of both the frame 6 and the substrate 8 (the same
applies to the substrate 8). It is. It is needless to say that the center of the rocking movement is
reliably held in engagement with the The four-channel source balance volume according to the
present invention described above corresponds to each of the four variable-resistance fourchannel sources described above as one volume variable element, and these four variable
[1111111 EndPage: 2 elements] Are interlocked at once, and the position of the volume of socalled four sound sources made up of four channel sources is selected at any position in any
direction in the listening room. By the way, recently, the demand for playback equipment such as
4-channel stereos has been increasing in recent years, but conventional 2-channel stereos etc.
are biased from various factors such as productivity and functional beauty, and consequently low
cost or ease of use. In view of the fact that they have become more compact, that is, smaller and
lighter, they have also been improved in line with the fact that they have been widely distributed
in line with the economic situation of the general public. It is inevitable that the demand for more
compact equipment will increase. The present invention 4 channel source balance volume was
developed in response to this request, and by eliminating the conventional semi-arc-like
interlocking plate, by arranging a thin and flat rocking lever between the frame and the substrate
While providing an operating mechanism of this type of volume which has never been so thin
and small, this rocking lever is integrally formed as much as possible with the fitting stem, the
arm to which the slider is attached, or a fan-like gear, etc. In the second embodiment, a method of
snap-in to a substrate is adopted in the second embodiment, and in other cases it is a one-stroke
method in which the substrate and the frame are held at once. If the knob support plate of the
knob is also a snack-in type, etc., the assembly operation is particularly easy and suitable for
mass production, and the above-mentioned thin (in combination with the small size, this type of
unit Good offer It is intended.
BRIEF DESCRIPTION OF THE DRAWINGS All refer to the embodiment 4 channel source balance
volume of the present invention, and FIG. 1 is a partially broken exploded perspective view of the
first embodiment, and FIG. 2 is a sectional view taken along the line X-X of FIG. It is a side view.
FIG. 3 is an exploded perspective view of the second embodiment of the present invention, and
FIG. 4 is a side view of the same embodiment taken along the line Y-Y. FIG. 5 shows a third
embodiment, which is one of the modifications of the second embodiment, and is a cross-
sectional side view of the main part thereof. FIG. 6 is a partially broken perspective view showing
the fourth embodiment, which is a modification of the first embodiment. The main parts will be
described. In FIG. 1 and FIG. 2, 1 is a knob, 1a is a universal fulcrum, 1b is a locking core, 2 and 3
is a rocking lever, 2b and 3b are the rocking lever 2a, 3a is a slit, 4 and 5 are variable resistance
elements (in this case, a two-handed rotary volume), 4a and 5a are their rotation shafts, 6 is a
frame, 61 is a universal fulcrum receiver, 7 is a supporting point holding plate and 8 is a
substrate. 23 is a slit 2a of the rocking levers 2 and 3. Figure 3 shows a rectangular eyelet
created by the crossover of 3a. The above reference numerals indicate parts corresponding to the
second embodiment (FIGS. 3 and 4), the third embodiment (FIG. 5) and the fourth embodiment
(FIG. 6), and In the second and subsequent embodiments, only specific parts will be described. In
FIG. 3, FIG. 4 and FIG. 2C220 'and 3C230' are attached to the arm of one end of the respective
rocking levers 2, 2S and 3 ', respectively. It is a slider. In FIG. 6, 2d and 3d are, in principle, fanshaped large-diameter gears which are integrally formed with the swing levers 2 and 3
respectively. Reference numerals 4c and 5c denote small diameter gears engaged with the
variable resistance elements 4 and 50, respectively. In FIGS. 3 to 6, the support plate 7 is not
shown. [Phase] Reference Document JP-A-47-26219 US Patent No. 2762234 (CJ, 74) 35 US
Patent No. 3372359 (C1 338)-EndPage: 3
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