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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to
transducers and, more particularly, to an electrical signal-to-mechanical vibration converter for
converting electrical signals to mechanical vibrations. 2. Description of the Related Art As is
shown in FIG. 2, a casing 1 has seven rungs, and the seven runes are provided with a hole 2 as
shown in FIG. The -g portion of the tl-ping coil bobbin 3 is adhesively fixed to the casing 1, and
the moving coil 4 is wound around the moving coil bobbin 3. This moving coil 4 is located in the
working gap of the magnetic circuit, and is this magnetic circuit in the yoke G with the bent ball
5? The gnetz 1-7 is fixed, and the top plate 8 is fixed to the magnets 1 to 7 and the magnetic
circuit is supported by the damper 9 with respect to the sheath 1 by the periphery thereof. There
is. In this J: U-lancing unit, when a signal current is supplied to the moving coil 4, it is fed to the
moving coil 4 in the space between the magnetic circuit, in particular, 1 to 8 You Since the
moving coil 4 is fixed to the casing 1, the magnetic circuit is added with 6 Ft [1-lens tension] and
acts perpendicularly to the plane including the damper 9. Since the magnetic circuit is suspended
on the casing 1 by the tamper 9, the vibration of the magnetic circuit is transmitted to the casing
1 and propagated outside. However, in such a transformer-dew, since the main worm matrix of
the vibration source is the magnetic circuit itself, it is necessary to generate the magnetic force of
the magnetic circuit itself for the force to drive its own weight. Even if it is desired to have a
predetermined performance of 10 or so, it has been very difficult to 1q a magnetic circuit
provided with both the optimum coercivity and the appropriate weight. In addition, the heat
dissipation means of the magnetic circuit that easily accumulates heat is either heat dissipation
by moving in a narrow space, or conduction heat dissipation by the damper, and there is a gap to
construct a so-called transducer with a large allowable input. Many existed. There is a drawback
in that the center of gravity of the magnetic circuit (shooting vibration unit 1) is biased on the
center of gravity position where it is difficult to position the center of gravity on the surface of
the support point (damper) of the magnetic circuit. OBJECTS OF THE INVENTION The present
invention is intended to solve the above-mentioned drawbacks. Therefore, the vibrator having the
function of the balancer 1-i is vibrated by luJ. [Composition of the invention] l For the purpose
described above, the present invention is configured such that the driving force generated in the
moving coil is transmitted to the vibrator supported by the damper and the vibration is
propagated to the outside through the casing. It is characterized by the fact that
Embodiment 1 Hereinafter, the configuration of the present invention will be described with
reference to the embodiment shown in FIG. 1 as J 'and-). Reference numeral 11 denotes a casing,
and the 9 to 11 have a mounting flange 12 at the periphery of the head portion, and the f-17
flange 12 has a hole such as a screw hole or the like (1 is drilled (1)) ing. In the space in the
casing 11, the magnets 1 to 15 are removed from the bottom play 1 to 14 formed on the center
ball 13 to be +13, and the top play 1 to 16 is taken from the magnet 15] The M1 magnetic circuit
is housed and fixed. The moving coil 11 is located in the magnetic gap of the magnetic circuit,
and the end of the bobbin 18 around which the moving coil 17 is wound is fixed to the metal
vibrating body 19. The vibration body 19 is supported by the damper 20 and attached to the
casing 1. The sign position of the damper 20 is in a plane including the position of the center of
gravity of the vibration body 19 and supports the vibration center. Therefore, when a signal
current is supplied to the moving coil 17, the magnetic circuit and the moving coil 17 are
propagated to the casing 11 through the tamper 20 to the mesh of the moving circuit 17. Since
the magnetic circuit is attached to the casing 11, the vibration is not affected by the weight and
shape of the magnetic circuit, and the desired vibration performance is obtained only by
considering only the coercivity and the magnetic flux density by the correlation with the weight
of the vibrator 19. Get a transformer corner. As is apparent from the above description, the
transducer of the present invention has the following effects. (A) The weight and shape of the air
circuit do not affect the vibration characteristics, and the setting of vibration tt is reliable and
easy. (B) Since the magnetic circuit that generates heat is attached to the casing, the surface of
the casing can be used to dissipate heat. (C) The center of gravity of the vibrating body and the
damper are positioned on the same plane by selecting the bonding position of the tamper and the
vibrating body! )! '7 to obtain a balanced vibration without vibrational deviation. (D) The size of
the damper is not affected by the size of the magnetic circuit, and the overall size can be reduced.
Brief description of the drawings
FIG. 1 is a side cross-sectional view of a transducer according to the present invention, and FIG. 2
is a side view of a conventional 1-lance differential.
11 ... L-Lens, 12 ... Mounting flange, 13 ... Center ball, 14 ... Bottom plate, 15 ... Magnet, 1 G ... Top
plate, 17 ... Moving Dil-il, 18 ... bobbin, 19 ... vibrator, 20 ... dannope. The same patent attorney
Susumu Murai 卜 卜 "4 D D 29 = 63
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