Note: Descriptions are shown in the official language in which they were submitted.
CA 02309540 2000-10-17
TITLE:VIBRATION SENSING DEVICE .
BACKGROUND OF THE INVENTION
The present invention relates to a vibration sensing
device. More particularly, the present invention relates
05 to a vibration sensing device which has a high sensitive
function.
Most conventional vibration sensing devices have
complex structures. One type of the conventional vibra-
tion sensing devices has a mechanical vibration sensing
structure. The second type of the conventional vibration
sensing devices has a resistance vibration sensing
structure. The third type of the conventional vibration
sensing devices has a magnetic vibration sensing
structure.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a
vibration sensing device which has a plumb ball to
contact a free ball in order to conduct electrically
or not to contact the free ball in order to discontinue
an electrical conduction.
Another object of the present invention is to
provide a vibration sensing device which has a thread and
a length of the thread can be adjusted so that various
sensitivities can be obtained.
In accordance with a first preferred embodiment of
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the present invention, a vibration sensing device com-
prises a spherical shell, an insulating cushion inserted
in a top portion of the spherical shell, a conductive
probe rod passing through the insulating cushion, a
05 conductive thread connected to an end of the conductive
probe rod, and a conductive plumb ball connected to
the conductive thread. A conductive free ball is disposed
in the spherical shell.
In accordance with a second preferred embodiment
of the present invention, a vibration sensing device
comprises a spherical shell, an insulating cushion in
serted in a top portion of the spherical shell, a screw
rod passing through the insulating cushion, a conductive
probe tube inserted in the insulating cushion, a con
ductive thread connected to an end of the screw rod,
and a conductive plumb ball connected to the conductive
thread. A nut fastens an upper end of the screw rod.
The conductive probe tube has a channel. The conductive
thread passes through the channel of the conductive probe
tube. A conductive free ball is disposed in the spherical
shell.
In accordance with a second preferred embodiment
of the present invention, a vibration sensing device
comprises a semispherical shell, a cover covering the
semispherical shell, a channel formed in a center portion
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of the cover, a screw rod passing through the channel, a
conductive thread connected to an end of the screw rod,
and a conductive plumb ball connected to the conductive
thread. A nut fastens an upper end of the screw rod.
05 A conductive free ball is disposed in the semispherical
shell.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional schematic view of a vibration
sensing device of a first preferred embodiment in
accordance with the present invention;
FIG. 2 is a sectional schematic view of a vibration
sensing device of a first preferred embodiment while
a probe rod is not in a perpendicular position;
FIG. 3 is another sectional schematic view of a
vibration sensing device of a first preferred embodiment
while a probe rod is not in a perpendicular position;
FIG. 4 is a sectional schematic view of a vibration
sensing device of a second preferred embodiment in
accordance with the present invention;
FIG. 5 is a sectional schematic view of a vibration
sensing device of a third preferred embodiment in
accordance with the present invention;
FIG. 6 is a sectional schematic view of a vibration
sensing device of a fourth preferred embodiment in
accordance with the present invention;
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FIG. 7 is a sectional schematic view of a vibration
sensing device of a fifth preferred embodiment in
accordance with the present invention;
FIG. 8 is another sectional schematic view of a
05 vibration sensing device of a fifth preferred embodiment
in accordance with the present invention;
FIG. 9 is a sectional schematic view of a vibration
sensing device of a sixth preferred embodiment in
accordance with the present invention;
FIG. 10 is an elevational view of a plumb ball, ark
elastic rod, and a screw rod of a seventh preferred
embodiment in accordance with the present invention; and
FIG. 11 is an elevational view of a plumb ball, an
elastic spring, and a screw rod of an eighth preferred
embodiment in accordance with the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, a first vibration sensing
device comprises a spherical shell l, an insulating
cushion 2 inserted in a top portion of the spherical
shell 1, a conductive probe rod 3 passing through the
insulating cushion 2, a conductive thread 4 connected to
an end of the conductive probe rod 3, and a conductive
plumb ball 5 connected to the conductive thread 4.
A conductive free ball 6 is disposed in the
spherical shell 1. When the conductive free ball 6
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does not rotate and vibrate, the conductive plumb
ball 5 contacts the conductive free ball 6.
Referring to FIG. 2, the conductive thread 4 is
in a perpendicular position while the probe rod 3 is not
05 in a perpendicular position.
Referring to FIG. 6, the vibration sensing device
further comprises an upper ring 31 and a lower ring 32
disposed on a lower end of the conductive probe rod 3.
The conductive thread 4 is connected to an end of the
lower ring 32.
Referring to FIG. 3, the conductive thread 4 is
~n a perpendicular position while the probe rod 3 is not
in a perpendicular position.
Referring to FIG. 4, a second vibration sensing
device comprises a spherical shell 1, an insulating
cushion 2 inserted in a top portion of the spherical
shell 1, a screw rod 8 passing through the insulating
cushion 2, a conductive probe tube 3 inserted in the
insulating cushion 2, a conductive thread 4 connected to
an end of the screw rod 8, and a conductive plumb
ball 5 connected to the conductive thread 4.
A nut 7 fastens an upper end of the screw rod 8.
The conductive probe tube 3 has a channel 30. The
conductive thread 4 passes through the channel 30 of the
conductive probe tube 3.
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A conductive free ball 6 is disposed in the
spherical shell 1. When the conductive free ball 6
does not rotate and vibrate, the conductive plumb
ball 5 contacts the conductive free ball 6.
05 When the nut 7 is loosened, the length of the screw
rod 8 can be adjusted.
Referring to FIG. 5, a third vibration sensing
device comprises a semispherical shell 1, a cover 9
covering the semispherical shell 1, a channel 91 formed
in a center portion of the cover 9, a screw rod 8 passing
through the channel 91, a conductive thread 4 connected
to an end of the screw rod 8, and a conductive plumb
ball 5 connected to the conductive thread 4.
A nut 7 fastens an upper end of the screw rod 8.
A conductive free ball 6 is disposed in the
semispherical shell 1. When the conductive free ball 6
does not rotate and vibrate, the conductive plumb
ball 5 contacts the conductive free ball 6.
When the nut 7 is loosened, the length of the screw
rod 8 can be adjusted.
Referring to FIGS. 7 and 8, the shell 1 is in a
bell shape.
Referring to FIG. 9, the shell 1 is in a conical
shape. The conductive free ball 6 is removed.
Referring to FIG. 10, an elastic rod 4' replaces
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the conductive thread 4. -
Referring to FIG. 11, an elastic spring 4 " replaces
the conductive thread 4.
The invention is not limited to the above embodiment
05 but various modification thereof may be made. Further,
various changes in form and detail may be made without
departing from the scope of the invention.
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