KR20120045169A - Hydro roll-rod for vehicle - Google Patents

Abstract

PURPOSE: A hydro roll rod for a car is provided to reduce non linear vibration and linear vibration effectively and offer various tuning factors. CONSTITUTION: A hydro roll rod for a car comprises a fastening rod(10), a bolt housing(20), a first insulator(30), a second insulator(60), an upper joint(40), a lower joint(50), an end plate(70), and a plunger(90). The bolt housing is formed as tube shape which is separable to either sides, and coupled with the fastening rod. The first insulator and the second insulator are made of rubber material having elasticity or synthetic resin material. The first insulator and the second insulator are installed in one side and the other side of the bolt housing respectively. The upper joint and a lower joint are adhered to edges of the first insulator and the second insulator respectively. The end plate is coupled with a nut(11) passing through the bolt housing and installed in the fastening rod. The plunger is installed between the first insulator and the second insulator and divides inside space into an upper fluid cell and a lower fluid cell.

Description

Hydro roll rod for vehicle {Hydro roll-rod for vehicle}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle roll rod, and more particularly, to a vehicle hydro roll rod which more efficiently improves a damping efficiency of vibration by using a liquid (hydro liquid) as a working fluid.

Passenger cars use monocoque bodies that are light in weight and highly productive instead of frame bodies. The monocoque body is a structure in which a separate frame is removed, and a power train in which the engine and transmission are combined with the body is mounted directly on the body. Thus, the monocoque body is a frame function of the body itself, the suspension and the chassis components are mounted, respectively, but the vibration of the powertrain to prevent direct transmission to the vehicle body and to serve as a vehicle collision in order to distribute the impact in the lower part of the vehicle A subframe is mounted.

The subframe may be manufactured in various forms according to the output and size of the vehicle. However, a power train having a high torque engine having a high displacement has a "#" shaped subframe in which four bars are formed in a quadrangular shape. It is common to use a low torque engine with a relatively low displacement, and a subframe in the form of an "I" plate is generally used.

Such a subframe-applied vehicle is supported by mounting members at three places (three point mounting) or four places (four point mounting). That is, as shown in Figure 1, the engine mount and the transmission mount is mounted on both side members forming the engine compartment of the vehicle body, respectively, to support the load of the power train, the roll rod is mounted on the subframe to the lower portion of the power train Connected to share displacement control and vibration attenuation. The roll rod is mounted one in the case of three-point mounting and two in the case of four-point mounting.

Meanwhile, the conventional roll rod is a structure in which a front insulator and a rear insulator made of rubber are disposed between the coupling parts bolted to the subframe, respectively, to reduce vibration by using elastic force of the front insulator and the rear insulator. In the conventional roll rod, the rear insulator is compressed and damped according to the displacement of the power train due to inertia when the vehicle moves forward, and the front insulator is compressed and damped when the vehicle moves backward or decelerates.

However, vibrations and transient displacements that occur at the start of the vehicle or during rapid acceleration and gear shifting act as continuous mechanical stress on the front and rear insulators. In addition, due to the nature of the rubber material to harden over time, the vibration insulation performance was bound to deteriorate as the vehicle runs.

In addition, the vibration isolation using the elasticity of the material may be effective for attenuating vibration in a certain region, but there is a structural difficulty in efficiently attenuating both large displacement and urine vibration. In addition, the lack of tuning factors required more testing and verification for each material of the insulator to meet the desired design requirements.

Therefore, in order to solve the above problems, the present invention can more effectively attenuate both large displacement vibration and urine stomach vibration, and uses a liquid as a working fluid to provide various tuning factors. The main object is to provide a roll rod for a vehicle.

Hydro roll rod of the present invention for achieving the above object, the bar (bar) fastening rod; and a bolt housing in which one end is coupled to the fastening rod in the form of a pipe (pipe) that can be separated on both sides along the longitudinal direction; A first insulator made of an elastic material and coupled to one side of the bolt housing; and an upper coupling part having a first insulator coupled to one side of an inner circumferential surface thereof in an open shape on both sides thereof; A lower insulator coupled to the other side of the inner circumferential surface of the unit; and a second insulator made of an elastic material and coupled to the other side of the bolt housing and mounted to the inner circumferential surface of the lower coupling portion; And an end plate coupled to the other end of the bolt housing by a fastening bolt penetrating the bolt housing, wherein the first and second insulators have a plate shape and the bolt housings penetrate. A plunger having an orifice hole is mounted to be partitioned into an upper liquid chamber and a lower liquid chamber, and a certain amount of liquid flowing through the orifice hole and flowing through the upper liquid chamber and the lower liquid chamber is filled.

The lower coupling portion is formed with a locking step bent outward from the end border, the upper coupling portion is coupled to the lower coupling portion by curling the end (curling) so that the locking jaw bite.

In addition, the plunger is composed of a fixing part coupled to the upper coupling part and an elastic material mounted on the inner circumferential surface of the fixing part and having a membrane having an orifice hole.

In addition, the bolt housing is configured by combining the first bolt housing coupled to the first insulator and the second bolt housing coupled to the second insulator, and the contact surfaces of the first bolt housing and the second bolt housing engage each other. It is formed into (i) plane.

The vehicle hydro roll rod having the above configuration has a structure that attenuates vibration by using fluid flowing between the upper liquid chamber and the lower liquid chamber as a working fluid, and has a larger displacement vibration than the conventional roll rod which attenuates the vibration only by the elastic force of the material itself. And it is possible to more efficiently suppress the vibration of the urine and the durability can be further extended.

In addition, the design flexibility can be improved by providing various tuning factors, and since the bolt housing is divided into the first bolt housing and the second bolt housing, the first and second insulators are pre-vulcanized and mounted in each. After being combined, the ease of assembly can be improved.

In addition, the membrane is formed of an elastic material can be attenuated high frequency vibration more efficiently by vibrating during the flow of the liquid.

1 is a view showing a state in which a roll rod is mounted in the engine room of the vehicle,
2 is a cross-sectional perspective view and a partially enlarged view showing a state in which the vehicle hydro roll rod is partially cut in accordance with a preferred embodiment of the present invention;
Figure 3 is an exploded perspective view of a hydro roll rod for a vehicle according to a preferred embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in more detail a hydro roll rod according to a preferred embodiment of the present invention.

Referring to FIG. 2, the rod 10 having a bar shape may be mounted with a bush so that one end thereof may be connected to the bracket of the power train, and the other side may be coupled to the subframe by bolting. The upper coupling portion 40 is formed so that the bolt hole 41 is coupled.

The fastening rod 10 is coupled to the tubular bolt housing 20, the first insulator 30 is mounted on one side of the bolt housing 20, the second insulator 60 is mounted on the other side do. The first insulator 30 and the second insulator 60 are made of rubber or synthetic resin having a predetermined elasticity, and as shown to form a predetermined space for accommodating a liquid therein, a " <" &Quot; &quot;

That is, the first insulator 30 and the second insulator 60 are formed to be convex toward the opposite side, the bolt housing 20 is coupled so as to pass through each center and the outer edge portion is the upper coupling portion 40 Or the lower coupling portion 50 is in close contact with each other.

The upper coupling portion 40 is formed in a partially protruded shape so that the bolt hole 41 can be formed as described above. In addition, the lower coupling portion 50 has a ring shape, and the side edges in close contact with the upper coupling portion 40 are bent to form a locking step 51. The upper coupling part 40 fixes the lower coupling part 50 by curling an end when the locking jaw 51 of the lower coupling part 50 enters the inner circumferential surface.

On the other hand, a plate-shaped plunger 90 is mounted between the first insulator 30 and the second insulator 60 to divide the internal space into the upper liquid chamber and the lower liquid chamber. The plunger 90 is a fixing portion 90a fixed by curling of the lower coupling portion 50 between the upper coupling portion 40 and the lower coupling portion 50; and the elastic portion of the fixing portion 90a And a membrane 90b mounted on the inner circumferential surface thereof. The membrane 90b has an orifice hole 91 formed at the center thereof to allow the bolt housing 20 to pass therethrough. The orifice hole 91 has a bolt housing (not shown) so that the filled liquid (hydro liquid) can flow through the upper liquid chamber and the lower liquid chamber according to the elastic compression and restoration of the first insulator 30 and / or the second insulator 60. 20 and a predetermined gap, that is, larger than the diameter of the bolt housing 20.

The end plate 70 is coupled to the end of the second insulator 60 to prevent the second insulator 60 from being separated. The end plate 70 is fixed by a fastening bolt 80 which penetrates through the bolt housing 20 and is coupled to the nut 11 mounted on the fastening rod 10. On the other hand, the fastening bolt 80 is bound to the nut 11 is interrupted separation, that is, to allow the elastic compression of the first insulator 30 and the second insulator 60, that is, the bolt housing (90a) consisting of two parts , 90b) are formed to have a length that can be closely spaced apart from each other by a predetermined distance.

As described above, the hydro roll rod configured as described above is filled with a predetermined amount of liquid in the internal space, and the liquid is formed in the upper liquid chamber and the lower liquid chamber according to the elastic compression of the first insulator 30 and / or the second insulator 60. It uses the viscosity and frictional force of the liquid to flow and attenuates the vibration and displacement transmitted from the powertrain.

Meanwhile, the bolt housing is configured by combining the first bolt housing 20a to which the first insulator 30 is coupled and the second bolt housing 20b to which the second insulator 60 is coupled to each other. The close contact surface of the 20a and the second bolt housing 20b is formed with an uneven surface that is engaged to form a step as shown. Therefore, when the first insulator 30 and / or the second insulator 60 are elastically compressed and restored, the first bolt housing 20a and the second bolt housing 20b are spaced apart and then in close contact with each other. Can be returned and engaged.

Then, the hydro roll rod having the configuration as described above is preferably made in the manner as shown in FIG.

The upper assembly part 40 and the first bolt housing 20a are inserted into the vulcanization mold, and the upper assembly is manufactured by vulcanizing the first insulator 30, which is a rubber material, and in the same manner, The lower assembly is prepared by separating the lower assembly by vulcanizing the second insulator 60 while the lower coupling part 50 and the second bolt housing 20b are inserted into the vulcanization mold.

The upper assembly, the plunger 90 and the lower assembly are sequentially assembled to the fastening rod 10 as shown in the drawing, and when the liquid is enclosed therein, the lower coupling portion is fixed by curling the end of the upper coupling portion 40. Let's do it.

Then, when the end plate 70 coupled to the fastening bolt 80 is in close contact with the second insulator 60, the fastening bolt 80 penetrates through the bolt housing 20 so that the end protrudes toward the fastening rod 10. , The end of the fastening bolt 80 is coupled to the nut 11 is assembled.

The hydro roll rod having the above configuration can be tuned in various ways according to vehicle performance by providing various tuning factors such as adjusting the diameter of the orifice hole, selecting the material of the first and second insulators and the membrane, and adjusting the length of the bolt housing. This provides more freedom of design flexibility than conventional roll rods.

As described above, the embodiments disclosed in the specification and the drawings are only presented as specific examples to aid the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: fastening rod
20: bolt housing
30: first insulator
40: upper coupling part
50: lower coupling part
60: second insulator
70: end plate

Claims (4)

A fastening rod; and a bolt housing having one end coupled to the fastening rod in a pipe shape that can be separated from both sides; and a first insulator made of an elastic material and coupled to one side of the bolt housing; The upper coupling portion coupled to the first insulator to one side of the inner circumferential surface; and the lower coupling portion coupled to the other side of the inner circumferential surface of the upper coupling portion in an open shape on both sides; and made of an elastic material and coupled to the other side of the bolt housing A second insulator mounted on an inner circumferential surface of the coupling portion; And an end plate coupled to the other end of the bolt housing by a fastening bolt penetrating the bolt housing.
A plate-shaped plunger having an orifice hole is mounted between the first and second insulators and partitioned into an upper liquid chamber and a lower liquid chamber through the orifice hole. Vehicle hydro roll rod, characterized in that filled with a certain amount of liquid flowing.
The vehicle according to claim 1, wherein the lower coupling portion has a locking jaw bent outwardly from the edge of the lower coupling portion, and the upper coupling portion is coupled to the lower coupling portion by curling an end to be caught by the locking jaw. Hydro roll rod.
According to claim 1 or 2, wherein the plunger is a fixed portion coupled between the first insulator and the second insulator; and an elastic material mounted on the inner circumferential surface of the fixing portion and formed with an orifice hole; Car hydro roll rod.
The bolt housing of claim 3, wherein the first bolt housing coupled to the first insulator and the second bolt housing coupled to the second insulator are coupled to each other, and the contact surfaces of the first bolt housing and the second bolt housing are respectively coupled to each other. The hydro roll rod for a vehicle, characterized in that formed in the concave-convex (면) surface to engage with each other.

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