JP5657306B2 - Wheel resonance prevention device for automobiles - Google Patents

Description

  The present invention relates to an automotive wheel resonance preventing apparatus that reduces noise associated with air column resonance (cavity resonance) in a tire air chamber.

  In general, it is known that air column resonance that occurs in the air chamber of a tire causes road noise when the vehicle is running. Air column resonance means that random vibrations transmitted from the road surface to the tire during running vibrate the air in the tire air chamber, resulting in a resonance phenomenon near the air column resonance frequency of the tire air chamber and generating a resonance It is a phenomenon.

  2. Description of the Related Art Conventionally, in order to reduce noise associated with air column resonance, an elastic belt and a plurality of resonators arranged on the elastic belt along the longitudinal direction of the elastic belt (prior art document 1) Is known as the prior art.

JP 2004-306760 A

  However, such a conventional technique is difficult to ensure airtightness during high-speed traveling, and requires a belt that is wound around the entire circumference of the wheel when the resonator is attached.

  In order to solve the above-described problems, the present invention provides an automotive wheel resonance prevention device that is easy to ensure airtightness during high-speed traveling and that can be easily installed, thereby reducing the manufacturing cost. To do.

In order to solve the above-mentioned problems, an automobile wheel resonance preventing device according to claim 1 of the present invention is formed by raising a bottom surface formed in a shape substantially along the wheel and the periphery of the bottom surface. A lower member formed in a box shape by a wall surface, an air chamber having a hollow shape by being disposed at a position facing the box portion of the lower member, and a communication hole communicating with the air chamber, respectively. An engaged portion that is engaged with the engaging portion of the wheel is formed at a position extending from the air chamber of the upper member, and any of the lower member and the upper member is formed. One of the two is fitted and supported by the other .

  According to a second aspect of the present invention, there is provided the vehicle wheel resonance preventing apparatus according to the first aspect, wherein the lower member and the fitting portion of the upper member are formed radially from the center side of the wheel. And

  According to the first aspect of the present invention, since the vehicle wheel resonance prevention device is configured such that one of the lower member and the upper member is fitted and supported on the wheel, the vehicle wheel resonance prevention device is When it is assembled to the wheel, it only needs to be fitted from the outside, so that it can be easily attached and the manufacturing cost can be significantly reduced. In addition, since the lower member and the upper member are fitted to each other, due to the centrifugal force generated in the wheel by the traveling of the automobile, the adhesion between the lower member and the upper member is increased, and the lower member and the upper member The resonance silence function which functions by the air chamber of the upper member is further enhanced.

  According to a second aspect of the present invention, since the fitting portions of the lower member and the upper member are formed radially from the center side of the wheel, the centrifugal force generated in the wheel by traveling of the automobile is used. There is an effect that the adhesion between the lower member and the upper member is further enhanced, and the resonance silencing function is further enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a wheel assembled with an automotive wheel resonance preventing apparatus according to a first embodiment of the present invention. The perspective view which expands and shows the wheel resonance prevention apparatus for moving vehicles of FIG. The expanded sectional view along the SA-SA line of FIG. The expanded sectional view along the SB-SB line of FIG. FIG. 3 is an enlarged sectional view corresponding to FIG. 3 according to a second embodiment of the present invention. FIG. 2 is a perspective view corresponding to FIG. 2 according to a third embodiment of the present invention. The expanded sectional view along the SC-SC line of FIG.

Hereinafter, embodiments of the present invention will be described in detail. In the present invention, the object of providing an automotive wheel resonance prevention device that is easy to ensure airtightness during high-speed traveling and that can be easily mounted to reduce the manufacturing cost is substantially along the wheel. A lower member formed in a box shape by a bottom surface formed in a shape and a wall surface formed by raising the periphery of the bottom surface, and a hollow member disposed at a position facing the box portion of the lower member communication holes communicating with the air chamber and the gas chamber constitute a Jo becomes more an upper member formed respectively formed, at a position extending from said air chamber of said upper member, engages with the engaging portion of the wheel This is realized by forming an engaged portion to be engaged and fitting and supporting one of the lower member and the upper member on the other . Embodiments of the present invention will be described below with reference to the drawings.

  A structure according to the first embodiment of the present invention will be described with reference to FIGS. A plurality of vehicle wheel resonance preventing devices 3 of the first embodiment are arranged so as to wind the outer peripheral surface of the rim 2 of the wheel 1. The vehicle wheel resonance preventing device 3 is formed in a hollow shape by a lower member 5 and an upper member 4 disposed on the well 2a of the rim 2, and has the hollow box-shaped air chamber 6. A communication hole 7 that communicates the inside and outside of the air chamber 6 is formed in the ceiling of the air chamber 6. The communication hole 7 is surrounded by a neck portion 8 extending outward from the air chamber 6.

  The air chamber 6 has an area of the communication hole 7, a volume of the air chamber 6, and a length of the neck 8 so that the air column resonance frequency in the air chamber of the tire (not shown) matches the resonance frequency of the air chamber 6. And a Helmholtz resonance silencer in which the length of the air chamber 6 in the circumferential direction of the wheel 1 is defined. Although there are various regulations such as the speed of sound in the air chamber of the tire and the variable associated with the length of the air chamber, they are well known and will not be described.

  The lower member 5 is formed in a box shape by a bottom surface 5a formed in a shape substantially along the well 2a of the wheel 2 and a wall surface 5b formed by raising the periphery of the bottom surface 5a. The upper member 4 is disposed at a position facing the lower member 5 to form a hollow box shape, and a communication hole 7 communicating with the hollow box-shaped air chamber 6 is formed. The lower member 5 and the upper member 4 are configured such that an engaging claw 5 c extending from the lower member 5 is engaged with an edge 4 b of a through hole 4 a formed in the upper member 4. An engaged portion 4 c of the upper member 4 is fitted and supported on the engaging portion 2 b of the wheel 2.

  The lower member 5 includes a first protrusion 5d formed with the wall surface 5b, a second protrusion 5e spaced from the first protrusion 5d, and the first protrusion 5d and the second protrusion 5e. The groove 5f is formed, and the groove 5f is formed with a third protrusion 4d formed on the upper member 4, and the first protrusion 5d, the second protrusion 5e, and the third protrusion. 4d and the groove 5f are formed radially from the center side of the wheel 1.

  Next, the operation of the first embodiment will be described.

  Since the vehicle wheel resonance preventing device 3 is formed by fitting and supporting either the lower member 5 or the upper member 4 to the wheel 1, the vehicle wheel resonance preventing device 3 is assembled to the wheel 1. Since it only needs to be fitted from the outside, it can be easily attached and the manufacturing cost can be significantly reduced. In addition, since the lower member 5 and the upper member 4 are fitted to each other, due to the centrifugal force generated in the wheel 1 by traveling of the automobile, the adhesion between the lower member 5 and the upper member 4 is increased, The resonance silence function which functions by the air chamber 6 of the lower member 5 and the upper member 4 is further enhanced.

  Further, the first protrusion 5d, the second protrusion 5e, the third protrusion 4d, and the concave groove 5f as fitting portions of the lower member 5 and the upper member 4 are formed radially from the center side of the wheel 2. For this reason, the centrifugal force generated in the wheel 2 by the traveling of the automobile increases the mutual adhesion between the lower member 5 and the upper member 4, and the resonance silencing function is further enhanced.

  A structure according to Embodiment 2 of the present invention will be described with reference to FIG. A plurality of the vehicle wheel resonance preventing devices 10 of the second embodiment are arranged so as to wind the outer peripheral surface of the rim 2 (see FIG. 1) of the wheel 1. The automobile wheel resonance preventing device 10 is formed in a hollow shape by a lower member 11 and an upper member 12 disposed on the well 2a of the rim 2, and has the hollow box-shaped air chamber 6. A communication hole (not shown) that communicates the inside and outside of the air chamber 6 is formed in the ceiling portion of the air chamber 6.

  The lower member 11 is formed in a box shape by a bottom surface 5a formed in a shape substantially along the well 2a of the wheel 2 and a wall surface 5b formed by raising the periphery of the bottom surface 5a. The upper member 12 is arranged at a position facing the lower member 11 to form a hollow box and a communication hole (not shown) communicating with the hollow box-shaped air chamber 6 is formed. In the lower member 11 and the upper member 12, an engaging claw 4e extending from the upper member 12 is engaged with a through hole 5g formed in the lower member 11 and a through hole 12a formed in the upper member 12. Become. An engaged portion 12 c of the upper member 12 is fitted and supported on the engaging portion 2 b of the wheel 2.

  The lower member 11 includes a first protrusion 5d formed with the wall surface 5b and a concave groove 12b into which the first protrusion 5d is inserted. The first protrusion 5d and the concave groove 12b are defined as follows. The wheel 1 is formed radially from the center side.

  A structure according to Embodiment 3 of the present invention will be described with reference to FIGS. A plurality of vehicle wheel resonance preventing devices 15 of the third embodiment are arranged so as to wind the outer peripheral surface of the rim 2 of the wheel 1. The automobile wheel resonance preventing device 15 is formed in a hollow shape by a lower member 16 and an upper member 17 disposed on the well 2 a of the rim 2, and has the hollow box-shaped air chamber 6. A communication hole (not shown) that communicates the inside and outside of the air chamber 6 is formed in the ceiling portion of the air chamber 6.

  The lower member 16 is formed in a box shape by a bottom surface 5a formed in a shape substantially along the well 2a of the wheel 2 and a wall surface 5b formed by raising the periphery of the bottom surface 5a. The upper member 17 has a hollow box shape by being disposed at a position facing the lower member 16 and is formed with a communication hole (not shown) communicating with the hollow box-shaped air chamber 6. The lower member 16 and the upper member 17 are configured such that an engaging claw 5 c extending from the lower member 16 is engaged with a through hole 4 a formed in the upper member 17. An engagement portion (not shown) partially protruding from the well 2a of the wheel 2 is fitted and supported by rotating the engaged portion 17c of the upper member 17 in the circumferential direction.

  The lower member 16 includes a first protrusion 5d formed with the wall surface 5b, a second protrusion 5e spaced from the first protrusion 5d, and the first protrusion 5d and the second protrusion 5e. The groove 5f is formed, and the groove 5f is formed with a third protrusion 4d formed on the upper member 17, and the first protrusion 5d, the second protrusion 5e, and the third protrusion. 4d and the groove 5f are formed radially from the center side of the wheel 1.

DESCRIPTION OF SYMBOLS 1 Wheel 2 Rim 3, 10, 15 Automotive wheel resonance prevention apparatus 4, 12, 17 Upper member 5, 11, 16 Lower member 5a Bottom surface 5b Wall surface 6 Air chamber 7 Communication hole

Claims (2)

A lower member formed in a box shape by a bottom surface formed in a shape substantially along the wheel and a wall surface formed by raising the periphery of the bottom surface, and a lower member disposed at a position facing the box portion of the lower member communication holes communicating with the air chamber and the gas chamber forms a hollow by is more an upper member formed respectively formed,
An engaged portion that is engaged with an engaging portion of the wheel is formed at a position extending from the air chamber of the upper member,
One of the lower member and the upper member is fitted and supported on the other, and the vehicle wheel resonance preventing apparatus for an automobile is characterized in that An automotive wheel resonance preventing apparatus according to claim 1,
The automobile wheel resonance preventing apparatus according to claim 1, wherein the fitting portions of the lower member and the upper member are formed radially from the center side of the wheel.

Images