close

Вход

Забыли?

вход по аккаунту

JPS5631299

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS5631299
Description ■, the name of the invention
コンデンサカートリッジ
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a capacitor
cartridge, and more particularly to an improvement of its pickup section. As known, a capacitor
cartridge C provided as a type for reproducing a disc record, a movable bridge interlocked with a
cantilever as its pickup portion, and a fixed pole opposed to the coughing pole, and a recording
needle Is generated by tracing the groove, and is converted into a change in electrostatic
capacitance between both electrodes to obtain a reproduction output. FIG. 1 shows a single type
stereo pickup unit conventionally known as such a condenser cartridge. That is, a pair of bladeshaped movable bridges 121 and 122 are supported above the base end portion of the cantilever
11, and a pair of fixed poles 1: jl and 132 are provided in pairs on each negative surface side of
the pair of blade-shaped movable bridges 121 and 1220. It will be done. However, such a
conventional capacitor cartridge has a structure in which the pair of blade-like movable bridges
131 and 132 are supported only above the base end of the cantilever 11, so that the mass
balance of the movable bridge is not great above all. There is a disadvantage of lack of needle
pressure stability, which adversely affects the regeneration characteristics. Therefore, the present
invention has been made in view of the above-described points, and the above-mentioned
conventional defects can be simplified and surely eliminated, and as high as possible, EndPage: 1
force, high 8 / N characteristic It is an object of the present invention to provide a very good
capacitor cartridge comprising an improved pick-up part so as to obtain. That is, the capacitor
cartridge according to the invention C = supports the two pairs of blade-like movable bridges in a
substantially X shape at the proximal end of the cantilever, each having a predetermined opening
angle, and these two pairs of blade-like movable A pair of fixed poles are paired so as to bridge
04-05-2019
1
the bridge separately, and a combined output in which these fixed poles are commonly
connected by two pairs in the diagonal direction is derived to obtain a double push-pull
complementary. By making the 11 type stereo pickup part, the mass balance of the movable
bridge is improved and the needle pressure stability is improved to contribute to the
improvement of the reproduction characteristics, and the high power and high S / N
characteristics as much as possible. Is characterized in that it is secured. Hereinafter, an
embodiment of the present invention will be described in detail with reference to the drawings.
That is, in FIG. 2, reference numeral 21 denotes a cantilever made of a light metal wire or the like
into a thin tapered tube, and the small diameter end of the cantilever is attached with the record
needle 22 and the large diameter base end is approximately X-shaped. Two pairs of wing-shaped
movable bridges jJ1, 232 are supported.
In this case, two pairs of movable bridges are taken out and shown in FIG. : Has a diameter of 2
m, 232 b, and is supported in an X shape so as to be symmetrical above and below the proximal
end of the cantilever 21. This makes it possible to improve mass balance. It can contribute to the
improvement of two-needle pressure stability. The proximal end of the cantilever 21 is vibratably
supported by a predetermined portion of the cartridge housing via a tension member and a
damper (not shown). Then, a pair of electrets etc. charged on the positive and negative electrodes
e, for example, are mounted so as to cover each wing of the two pairs of vane-shaped movable
bridges 231 ° 232, root pieces 231 m, 231 b, 23 and 232 b. Pole 241m. 241b-244m and 244b
are installed in a pair. Here, the pair of fixed poles 241m, 241b to 244a. The pair 244 b is
commonly connected in pairs in the diagonal direction, and an output is led out to a conversion
circuit (not shown) such as a source follower of a field effect transistor or the like by a lead wire
251.252. Thus, in the above configuration, the vibration of the record needle 22 transmitted to
the cantilever 21 is respectively applied to the two pairs of blade-like movable bridges 231 and
232. By allocating to each R channel, a change in complementary capacitance according to the
imaging device of the coughing channel can be obtained between the pair of fixed electrodes
241m, 242b to 244m, and 244b. The complementary capacitance change output for each
channel is commonly connected to every two pairs in the diagonal direction, and is supplied as a
double push-pull combined output to a conversion circuit (not shown). It is possible to obtain a
reproduced output converted into a desired airborne signal which has a high output
characteristic which is increased by about 5 dB in principle, that is, a high 8 / N characteristic, as
compared with the simple complementary type. In this case, there is also a secondary advantage
that the apparent ineffective capacity is reduced to 1⁄4 as compared with the single type, but the
present invention is limited to the embodiment described above and illustrated. It goes without
saying that various modifications can be made without departing from the scope of the present
invention. For example, blade pieces 231a, 231b, 23 of the movable bridges 231, 232 in the
previous example! In the case where each plane of m, 23: Ib is present in the direction
orthogonal to the axial direction of the cantilever 21, as shown in FIG. 4, the direction parallel to
the axial direction of the cantilever with respect to the proximal end of the cantilever 21. , And
04-05-2019
2
supports two pairs of movable bridges 231 ', 232' so that a plane is present, and a pair of fixed
poles as shown in FIG. 5; 241'a.
It may be made to set up 241'b-244'm and 244'b. Also in the case of FIG. 5, as in the previous
example, the two pairs of fixed poles in the diagonal direction are commonly connected to derive
an output. EndPage: 2 Therefore, as described in detail above, according to the present invention,
the mass balance of the movable bridge can be improved and the needle pressure stability can be
improved to contribute to the improvement of the regeneration characteristics, and the high
output as much as possible. It is possible to provide a very good capacitor cartridge including the
pickup unit which is falsified so as to secure high S / N characteristics.
4. Brief Description of the Drawings FIG. 1 is a perspective view showing the main part of a
conventional capacitor cartridge, FIG. 2 is a perspective view of the main part showing one
embodiment of a capacitor cartridge according to the present invention, and FIG. FIG. 4 is a
detailed view of a mound supporting part used in the embodiment, FIG. 4 is a detailed view of a
m pole portion used in another embodiment, and FIG. 5 is an electrode arrangement state
diagram in another embodiment a. 21 ... cantilever, 12: record needle, jJ1, 2 Jj-... movable bridge,
231a, 231b. 232 heat, 231 b ··· blade, 241 麿,: 14 ib to 244 a, 244 b ··· fixed pole, 261, 2521
·Lead. EndPage: 3
04-05-2019
3
1/--страниц
Пожаловаться на содержимое документа