VEHICLE WHEEL NOISE-REDUCING DAMPER

AMORTISSEUR DE REDUCTION DE BRUIT DE ROUE DE VEHICULE

English Abstract

A damper for reducing the running noise of vehicle wheels on tracks, comprising a damping connector and a damping ring (11); the damping ring (11) has an open section (12); the end of the open section (12) has a bevel; the damping connector has a tubular body (1); each of two ends of the tubular body (1) has a locator (2); the locators (2) comprise a cylindrical body (3) part and a wedge-shaped body (4) part; the cylindrical body (3) can be inserted into the end of the tubular body (1); the inclined surface of the wedge-shaped body (4) matches the bevel of the open section of the damping ring (11); the tubular body (1) is provided with a spring (5) therein for pushing the locators (2) of the two ends outward; and the locators (2) each have a positioning hole (6), and a positioning pin (7) can be inserted into the positioning hole (6) through the tubular body (1). The damper ensures effective connection between the damping connector and the end of the open section of the damping ring, ensures that the damping ring can effectively absorb the vibration of vehicle wheels, decreases the modal amplitude of the vehicle wheels, and reduces noise radiation of the vehicle wheels.

French Abstract

L'invention concerne un amortisseur permettant de réduire le bruit de roulement de roues de véhicule sur rails, comportant un connecteur d'amortissement et un anneau d'amortissement (11) ; l'anneau d'amortissement (11) a une section ouverte (12) ; l'extrémité de la section ouverte (12) a un biseau ; le connecteur d'amortissement a un corps tubulaire (1) ; chacune de deux extrémités du corps tubulaire (1) a un dispositif de positionnement (2) ; les dispositifs de positionnement (2) comportent une partie de corps cylindrique (3) et une partie de corps en forme de coin (4) ; le corps cylindrique (3) peut être inséré dans l'extrémité du corps tubulaire (1) ; la surface inclinée du corps en forme de coin (4) correspond au biseau de la section ouverte de l'anneau d'amortissement (11) ; le corps tubulaire (1) comporte un ressort (5) à l'intérieur de celui-ci pour pousser les dispositifs de positionnement (2) des deux extrémités vers l'extérieur ; et les dispositifs de positionnement (2) ont chacun un trou de positionnement (6), et une broche de positionnement (7) peut être insérée dans le trou de positionnement (6) au travers du corps tubulaire (1). L'amortisseur assure une connexion efficace entre le connecteur d'amortissement et l'extrémité de la section ouverte de l'anneau d'amortissement, assure que l'anneau d'amortissement peut absorber efficacement la vibration de roues du véhicule, diminue l'amplitude modale des roues du véhicule, et réduit le le rayonnement sonore des roues du véhicule.

Claims

CA 02952675 2016-12-16
WHAT IS CLAIMED IS:
1. A vehicle wheel noise-reducing damper, comprising a damping connector and a
damping
ring, wherein:
the damping ring has an open section, and one end of the open section has an
angled plane;
the damping connector has a pipe-shaped object whose length is slightly
shorter than a length
of the open section of the damping ring;
on two ends of the pipe-shaped object, there are two locating objects each
having a bar that
can get through one end of the pipe-shaped object, and a wedge-Shaped object
having an angled
plane matching the angled plane of the end of the open section of the damping
ring; and
inside the pipe-shaped object, there is a spring for pushing out the two
locating objects at the
two ends of the pipe-shaped object.
2. A vehicle wheel noise-reducing damper, comprising a damping connector and a
damping
ring, wherein:
the damping ring has an open section, and one end of the open section has a
ladder-shaped
surface;
the damping connector has a pipe-shaped object whose length is slightly
shorter than a length
of the open section of the damping ring;
on two ends of the pipe-shaped object, there are two locating objects each
having a bar that
can get through one end of the pipe-shaped object, and a wedge-shaped object
having a ladder-
shapcd surface matching the ladder-shaped surface of the end of the open
section of the damping
ring; and
inside the pipe-shaped object there is a spring for pushing out the two
locating objects at the
two ends of the pipe-shaped object.
9

CA 02952675 2016-12-16
3. The vehicle wheel noise reducing damper according to claim 2, wherein:
each locating object has a locating hole to allow a bar to get through the
pipe-shaped object
and the locating object.
4. The vehicle wheel noise-reducing damper according to claim 2, wherein:
one of the two locating objects is fixed to one end of the pipe-shaped object.
5. The wheel noise-reducing damper according to claim 2, wherein:
the pipe-shaped object has same peripheral and axial curvature as an
installation groove of
the damping ring.
6. The vehicle wheel noise reducing damper according to claim 1, wherein:
each locating object has a locating hole to allow a bar to get through the
pipe-shaped object
and the locating object.
7. The vehicle wheel noise-reducing damper according to claim 1, wherein:
one of the two locating objects is fixed to one end of the pipe-shaped object.
8. The wheel noise-reducing damper according to claim 1, wherein:
the pipe-shaped object has same peripheral and axial curvature as an
installation groove of
the damping ring.
1 0

Description

CA 02952675 2016-12-16
VEHICLE WHEEL NOISE-REDUCING DAMPER
FIELD OF THE DISCLOSURE
[0001] This invention concerns a noise-reducing damper used to reduce the
noise
arising from running track wheels.
BACKGROUND
[0002] One of the current noise-reducing methods is to install a damper on the
wheel which absorbs the vibration energy from the wheel so as to increase the
vibration
damping, reduce noise radiation, and decrease the oscillation amplitude of the
wheel. As
such, the goal of reducing running noise can be achieved.
[0003] The noise-reducing damper is made of metal and comprised of a
noise-reducing damping ring and a connector. The damper is installed in a ring-
shaped
groove. To install this damping ring, an open section of the ring and a
connector which
connects the open section is required. Patent (CN200920179686.2) published a
wheel
noise-reducing damper which has one damping ring and a connector that connects
the two
ends of the open section of the ring through two holes at each end. A closed
ring-shaped
noise-reducing damper is then made. But the connection between the ring and
the
connector requires heave-duty adhesive and the connected area is limited,
which affect the
stability of the connection, the effect of noise reduction and the safety. For
the long-term
use, the effect of noise reduction will gradually diminish and new noise may
also arise as
wear occurs between the damping ring and the groove.
BRIEF SUMMARY OF THE INVENTION
[0004] The objective of this invention is to provide a noise-reducing damper
which
can overcome the shortcomings of the current technology, better reduce the
running noise
1

CA 02952675 2016-12-16
of the wheel and ensure effective connection between the damping connector and
the open
ends of the damping ring. The noise-reducing damper provides adequate
compensation for
the open ends and utilizes the centrifugal force the spinning wheel to improve
the effect of
noise reduction during the running of the vehicle. By doing so the noise
reduction effect
and safety can be maintained even there is wearing in the damping ring.
[0005] In this invention, the noise-reducing damper has a damping connector
and
ring.
[0006] The open section of the damping ring has an angled plane or ladder-
shaped
surface; the damping connector has a pipe-shaped object which is slightly
shorter than the
length of the open section of the damping ring; at the two ends of the pipe-
shaped object
are two locating objects, which on one side has a bar that can go through the
end of the
pipe-shaped object, and on the other side has angled plane or ladder-shaped
surface
matching the end of the open section of the damping ring. Inside the pipe-
shaped object,
there is a spring which can push out the two locating objects. The locating
object has a
locating hole which is used to fix the location of the locating object by
inserting a bar from
outside the pipe-shaped object into the hole; when the bar is pulled out the
two locating
objects will be pushed out and stay connected with the damping ring.
[0007] During the installation of the damper, the damping ring is installed
into the
groove on the wheel with its open section being connected through matching the
angled
planes or ladder-shaped surfaces between the connector and the ring. With the
interacting
effect occurring in the axial, radical and peripheral directions, the damping
ring and the
connector are strongly attached to the wheel.
[0008] The shape of the pipe-shaped object can be adjusted to a certain degree
of
radian so as to provide maximized noise reduction and strengthen the location
of the
connector as well as making the running of the wheel more safe and stable.
2

CA 02952675 2016-12-16
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is the structural figure of the damping ring in Example 1 of
this
invention;
[0010] Figure 2 is the axial section structural figure of the damping ring
connector
in Example 1 of this invention;
[0011] Figure 3 is the structural figure of the damping ring of Example 2 of
this
invention;
[0012] Figure 4 is the axial section structural figure of the damping ring
connector
in Example 2 of this invention;
[0013] Figure 5 is the structural figure of the damping ring in Example 3 of
this
invention;
[0014] Figure 6 is the axial section structural figure of the damping ring
connector
in Example 3 of this invention;
[0015] Figure 7 is the structural figure of the damping ring in Example 4 of
this
invention;
[0016] Figure 8 is the axial section structural figure of the damping ring
connector
in Example 4 of this invention;
[0017] Figure 9 is the structural figure of the damping ring in Example 5 of
this
invention;
[0018] Figure 10 is the axial section structural figure of the damping ring
connector in Example 5 of this invention;
[0019] Figure 11 is the structural figure of the damping ring in Example 6 of
this
invention; and
[0020] Figure 12 is the axial section structural figure of the damping ring
connector in Example 6 of this invention.
[0021] In the attached figures, the damping ring connector has a left-right
3

CA 02952675 2016-12-16
symmetrical structure and therefore the figures only presents half of the
symmetrical
structure and skips the other half.
DETAILED DESCRIPTION OF THE INVENTION
[0022] In Example 1 demonstrated in Figurel and Figure 2, the connector has a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object 1 are two locating objects 2 that
has a bar 3
which can get through the pipe-shaped object 1 and a wedge-shaped object 4
which
matches the angled plane (shown with dashed lines) of the end of the damping
ring. Inside
the pipe-shaped object 1 there is a spring 5 which can push out the two
locating objects 2
at the two ends of the pipe-shaped object 1; the locating object 2 has a
locating hole 6
through which a locating bar 7 can get into from the pipe-shaped object 1 to
fix the
location of the locating object 2; when the locating bars 7 are pulled out,
the locating
objects are pushed out by the spring and connected with the damping ring.
[0023] The damping ring 11 is a round metal ring with an open section 12 whose
ends are comprised of a plane roughly in the radical direction and an angled
plane facing
the outside of the damping ring.
[0024] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the angled plane matches the end of the connector. With the
interacting
effect on the damping ring, connector and the wheel installation groove in the
axial,
radical and peripheral directions, the damping ring and connector are strongly
attached to
the wheel.
[0025] In Example 2 demonstrated in Figure 3 and Figure 4, the connector has a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object I are two locating objects 2 that
has a bar 3
which can go through the pipe-shaped object 1 and a wedge-shaped object 4
which
4

CA 02952675 2016-12-16
matches the ladder-shaped surface (shown by dashed lines) of the end of the
damping ring.
Inside the pipe-shaped object 1 there is a spring 5 which can push out the two
locating
objects 2 at the two ends of the pipe-shaped object 1; the locating object 2
has a locating
hole 6 through which a locating bar 7 is can get into the pipe-shaped object 1
to fix the
location of the locating object 2; when the locating bars 7 are pulled out,
the locating
objects are pushed out by the spring and connected with the damping ring 11.
[0026] The damping ring 11 is a round metal ring with an open section 12 whose
ends are comprised of a plane roughly in the radical direction and an ladder-
shaped
surface facing the outside of the damping ring.
[0027] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the ladder-shaped surface matches the end of the connector.
With the
interacting effect on the damping ring, connector and the wheel installation
groove in the
axial, radical and peripheral directions, the damping ring and connector are
strongly
attached to the wheel.
[0028] In Example 3 demonstrated in Figure 5 and Figure 6, the connector has a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object 1 are two locating objects 2 that
has a bar 3
which can go through the pipe-shaped object 1 and a wedge-shaped object 4
which
matches the angled plane (shown with dashed lines) of the end of the damping
ring. Inside
the pipe-shaped object 1 there is a spring 5 which can push out the two
locating objects 2
at the two ends of the pipe-shaped object 1; the locating object 2 has a
locating hole 6
through which a locating bar 7 can get into the pipe-shaped object 1 to fix
the location of
the locating object 2; when the locating bars 7 are pulled out, the locating
objects are
pushed out by the spring and connected with the damping ring 11.
[0029] The damping ring 11 is a round metal ring with a open section 12 whose
ends are comprised of a plane roughly in the radical direction and an angled
plane facing

CA 02952675 2016-12-16
the outside of the damping ring.
[0030] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the angled plane matches the end of the connector. With the
interacting
effect on the damping ring, connector and the wheel installation groove in the
axial,
radical and peripheral directions, the damping ring and connector are strongly
attached to
the wheel.
[0031] In Example 4 demonstrated in Figure 7 and Figure 8, the connector has a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object I are two locating objects 2 that
has a bar 3
which can go through the pipe-shaped object 1 and a wedge-shaped object 4
whose angled
plane matches the angled plane (shown by dashed lines) of the end of the
damping ring.
Inside the pipe-shaped object I there is a spring 5 which can push out the two
locating
objects 2 at the two ends of the pipe-shaped object I; the locating object 2
has a locating
hole 6 through which a locating bar 7 can get into the pipe-shaped object I to
fix the
location of the locating object 2; when the locating bars 7 are pulled out,
the locating
objects are pushed out by the spring and connected with the damping ring.
[0032] The damping ring 11 is a round metal ring with an open section 12 whose
ends have an angled plane facing the outside of the damping ring.
[0033] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the angled plane matches the end of the connector. With the
interacting
effect on the damping ring, connector and the wheel installation groove in the
axial,
radical and peripheral directions, the damping ring and connector are strongly
attached to
the wheel.
[0034] In Example 5 demonstrated in Figure 9 and Figure 10, the connector has
a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object 1 are two locating objects 2 that
has a bar 3
6

CA 02952675 2016-12-16
which can get through the pipe-shaped object 1 and a wedge-shaped object 4
whose
angled plane matches the angled plane (shown by dashed lines) of the end of
the damping
ring. Inside the pipe-shaped object 1, there is a spring 5 which can push out
the two
locating objects 2 at the two ends of the pipe-shaped object 1; the locating
object 2 has a
locating hole 6 through which a locating bar 7 can get into the pipe-shaped
object 1 to fix
the location of the locating object 2; when the locating bars 7 are pulled
out, the locating
objects are pushed out by the spring and connected with the damping ring.
[0035] The damping ring 11 is a round metal ring with an open section 12 whose
ends have an angled plane facing the outside of the damping ring.
[0036] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the angled plane matches the end of the connector. With the
interacting
effect on the damping ring, connector and the wheel installation groove in the
axial,
radical and peripheral directions, the damping ring and connector are strongly
attached to
the wheel.
[0037] In Example 6 demonstrated in Figure 11 and Figure 12, the connector has
a
pipe-shaped object 1 which is slightly shorter than the open section 12 of the
damping ring;
at the two ends of the pipe-shaped object 1 are two locating objects 2 that
has a bar 3
which can get into the pipe-shaped object 1 and a wedge-shaped object 4 whose
angled
plane matches the angled plane (shown by dashed lines) of the end of the
damping ring.
Inside the pipe-shaped object 1 there is a spring 5 which can push out the two
locating
objects 2 at the two ends of the pipe-shaped object 1; the locating object 2
has a locating
hole 6 through which a locating bar 7 can get into the pipe-shaped object 1 to
fix the
location of the locating object 2; when the locating bars 7 are pulled out,
the locating
objects are pushed out by the spring and connected with the damping ring.
[0038] The damping ring 11 is a round metal ring with an open section 12 whose
ends are comprised of a plane roughly in the radical direction and an angled
plane facing
7

CA 02952675 2016-12-16
the outside of the damping ring.
[0039] When the damping ring 11 is installed in the installation groove (not
shown
in the figures), the angled plane matches the end of the connector. With the
interacting
effect on the damping ring, connector and the wheel installation groove in the
axial,
radical and peripheral directions, the damping ring and connector are strongly
attached to
the wheel.
[0040] In the above-mentioned examples, the length of the open section 12 of
the
damping ring 11 is determined as such the length of the diameter of the
damping ring 11
enables the damping ring 11 to be installed in the groove when the two ends of
the open
section 12 touches or the damping ring 11 is pushed into the groove
continuously after
putting one end of the open section 12 of the damping ring 11 into the groove.
[0041] In the above-mentioned examples, the pipe-shaped object 1 can be
designed with the same degree of radical and axial curvature as that of the
installation
groove.
[0042] In this invention, one of the two locating objects 2 can be fixed to
one end
of the pipe-shaped object 1 or both of them can be fixed to the pipe-shaped
object.
8

Representative Drawing