KR101551955B1 - Hydro roll-rod for vehicle - Google Patents

Abstract

A bolt housing having one end connected to the clamping rod in the shape of a pipe separable from both sides of the clamping rod; a first insulator made of an elastic material and coupled to one side of the bolt housing; And a lower engaging portion formed on the other side of the inner circumferential surface of the upper engaging portion so as to be opened on both sides of the upper engaging portion and a lower engaging portion formed on the other side of the bolt housing, A second insulator coupled to an inner circumferential surface of the lower engaging portion; And an end plate coupled to the other end of the bolt housing by a fastening bolt passing through the bolt housing, wherein a bolt housing is formed between the first and second insulators, A plunger in which a hole is formed is partitioned into an upper liquid chamber and a lower liquid chamber and a predetermined amount of liquid flowing through the upper liquid chamber and the lower liquid chamber is filled through the orifice hole.
The vehicle hydrorol having the above structure is a structure that attenuates vibrations by using liquid flowing between the upper liquid chamber and the lower liquid chamber as a working fluid and attenuates vibrations only by the elastic force of the material itself. And vibration on the urine can be more effectively suppressed and the durability can be further extended.

Description

Hydro roll-rod for vehicle [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll rod for a vehicle, and more particularly, to a hydraulic roll rod for a vehicle that uses a liquid (hydro liquid) as a working fluid to more effectively improve the damping efficiency of vibration.

Passenger vehicles are mostly lightweight and highly productive monocoque bodies 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 the transmission are combined, is mounted directly on the vehicle body. Therefore, the monocoque body is mounted on the lower portion of the vehicle in order to prevent the vibration of the power train from being directly transmitted to the vehicle body, A frame (subframe) is mounted.

The sub-frame may be manufactured in various forms according to the output and size of the vehicle, but a power train having a high-torque high-torque engine is a sub-frame of a "#" shape in which four bars are combined to form a square shape It is common that low-torque engines with a relatively low displacement use a sub-frame in the form of an "I" shaped plate.

Such a vehicle to which the subframe is applied is supported by the mounting members at three places (three-point mounting) or four places (four-point mounting). That is, as shown in FIG. 1, engine mounts and transmission mounts are mounted on both side members forming the engine room of the vehicle body to support the load of the power train, and the roll load is mounted on the sub- Connected to share displacement control and vibration damping. The roll is mounted in one of three-point mounting and two in four-point mounting.

On the other hand, a conventional roll load has a structure in which a front insulator and a rear insulator of a rubber material are disposed with a joint portion bolted to a subframe therebetween, and the vibration is attenuated using the elasticity of the front insulator and the rear insulator material. In the conventional roll load, when the vehicle is advanced, the rear insulator is compressed and damped according to the displacement of the power train due to inertia. When the vehicle is moving backward or decelerating, the front insulator is compressed and damped.

However, the vibration and transient displacement occurring at the start of the vehicle or during rapid acceleration and gear shifting acted as a continuous mechanical stress on the front and rear insulators. In addition, due to the characteristics of the rubber material that hardens over time, the vibration insulation performance is inevitably deteriorated by the operation of the vehicle.

In addition, although the vibration insulation using the elasticity of the material can be effective for vibration damping of a certain region, it is structurally difficult to effectively attenuate both the large displacement vibration and the large displacement vibration. In addition, lack of tuning factors required more testing and verification of insulator material to meet the desired design requirements.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a hydraulically actuated fluid, which uses a liquid as a working fluid to more effectively attenuate both large- Type vehicle rolls.

According to an aspect of the present invention, there is provided a hydrorol rod comprising: a bar-shaped coupling rod; and a bolt housing having one end connected to the coupling rod, A first insulator formed of a resilient material and coupled to one side of the bolt housing, an upper engaging portion having a first insulator joined to one side of an inner circumferential surface of which an opening is formed on both sides, A second insulator made of an elastic material and coupled to the other side of the bolt housing and mounted on an inner circumferential surface of the lower engaging portion; And an end plate coupled to the other end of the bolt housing by a fastening bolt passing through the bolt housing, wherein a bolt housing is formed between the first and second insulators, A plunger having an orifice hole formed therein is partitioned into an upper liquid chamber and a lower liquid chamber, and a predetermined amount of liquid flowing through the upper liquid chamber and the lower liquid chamber is filled through the orifice hole.

The lower engaging portion is formed with an engaging protrusion bent outward at an edge of the end portion, and the upper engaging portion is engaged with the lower engaging portion by curling the end so that the engaging jaw is engaged.

The plunger is composed of a stationary portion coupled to the upper engaging portion and a membrane, which is an elastic material and is mounted on the inner circumferential surface of the stationary portion and has an orifice hole.

The bolt housing may include a first bolt housing coupled to the first insulator and a second bolt housing coupled to the second insulator, wherein the contact surfaces of the first bolt housing and the second bolt housing are engaged with each other (Concavo-convex) surface.

The vehicle hydrorol having the above structure is a structure that attenuates vibrations by using liquid flowing between the upper liquid chamber and the lower liquid chamber as a working fluid and attenuates vibrations only by the elastic force of the material itself. And vibration on the urine can be more effectively suppressed and the durability can be further extended.

Also, since the bolt housing is separated into the first bolt housing and the second bolt housing, the first insulator and the second insulator are preliminarily vulcanized So that the ease of assembly can be improved.

In addition, the membrane is made of an elastic material, and vibrates when the liquid flows, so that the high-frequency vibration can be more effectively attenuated.

1 is a view showing a state where a roll load is mounted on an engine room of a vehicle,
2 is a cross-sectional perspective view and a partial enlarged view showing a partial cut-away view of a hydrorol rod for a vehicle according to a preferred embodiment of the present invention,
3 is an exploded perspective view of a hydrorol rod for a vehicle according to a preferred embodiment of the present invention.

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

Referring to FIG. 2, a fastening rod 10 having a bar shape is mounted with a bush so that one end of the fastening rod 10 can be connected to the bracket of the power train, and the other end can be fastened to the sub- An upper engaging portion 40 having a bolt hole 41 is coupled.

The bolt housing 20 is connected to the fastening rod 10 and the first insulator 30 is mounted on one side of the bolt housing 20 and the second insulator 60 is mounted on the other side of the bolt housing 20. [ do. The first insulator 30 and the second insulator 60 are made of a rubber material or synthetic resin material having a predetermined elasticity and are formed to have a predetermined space for receiving a liquid therein, ≫ ">

That is, the first insulator 30 and the second insulator 60 are convexly opposite to each other, and the bolt housing 20 is coupled to penetrate the center of each bolt and the outer rim portion is connected to the upper engaging portion 40, Or the lower engaging portion 50 are tightly engaged with each other.

The upper engaging portion 40 is formed in a partially protruding shape so that the bolt hole 41 can be formed as described above. The lower engaging part 50 has a ring shape and a side edge of the lower engaging part 50 which is in close contact with the upper engaging part 40 is bent so that the engaging step 51 is formed. The upper engaging portion 40 curls the end when the engaging protrusion 51 of the lower engaging portion 50 enters the inner peripheral surface to fix the lower engaging portion 50.

A plate-shaped plunger 90 is mounted between the first insulator 30 and the second insulator 60 so as to partition the internal space into an upper liquid chamber and a lower liquid chamber. The plunger 90 includes a fixing portion 90a fixed by curling of the lower engaging portion 50 between the upper engaging portion 40 and the lower engaging portion 50, And a membrane 90b mounted on the inner circumferential surface. An orifice hole 91 is formed at the center of the membrane 90b such that the bolt housing 20 penetrates through the membrane 90b. The orifice hole 91 is formed in the bolt housing (not shown) so that the filled liquid (hydro liquid) can flow through the upper liquid chamber and the lower liquid chamber in accordance with the elastic compression and restoration of the first insulator 30 and / 20 and the predetermined gap, that is, the diameter of the bolt housing 20 is larger than the diameter of the bolt housing 20.

An end plate (70) is coupled to an end of the second insulator (60) to prevent the second insulator (60) from coming off. The end plate 70 is fixed to the bolt housing 20 by a fastening bolt 80 coupled to the nut 11 mounted on the fastening rod 10. The fastening bolt 80 is fastened to the nut 11 so as to be separated from the fastening bolt 80 so as to allow elastic compression of the first insulator 30 and the second insulator 60. In other words, And 90b are spaced apart from each other by a predetermined distance,

As described above, the hydrorol having the above-described structure is filled with a predetermined amount of liquid in the inner space, and the liquid is supplied to the upper liquid chamber and the lower liquid chamber in accordance with the elastic compression of the first insulator 30 and / And uses the viscosity and the frictional force of the liquid with respect to the flow to attenuate the vibration and displacement transmitted from the power train.

The bolt housing includes a first bolt housing 20a to which the first insulator 30 is coupled and a second bolt housing 20b to which the second insulator 60 is coupled, The contact surfaces of the second bolt housing 20a and the second bolt housing 20b are formed as uneven surfaces that mate to form a step difference as shown in the figure. Therefore, when the first bolt housing 20a and the second bolt housing 20b are separated from each other after the first insulator 30 and / or the second insulator 60 are elastically compressed and restored, It can be returned and engaged.

The hydrorol roll having the above-described structure is preferably assembled in a manner as shown in FIG.

An upper assembly is manufactured by vulcanizing a first insulator 30 made of rubber in a state where the upper joint portion 40 which is a metal and the first bolt housing 20a are inserted into a vulcanization mold, The lower insulator 60 is cured in a state where the lower engaging portion 50 and the second bolt housing 20b are inserted into the vulcanization mold to separate the lower assemblies.

The upper assembly, the plunger 90, and the lower assembly are sequentially assembled to the fastening rod 10, and when the liquid is sealed inside, the end of the upper assembly 40 is curled to fix the lower assembly. .

Thereafter, when the end plate 70 coupled with the fastening bolt 80 is brought into close contact with the second insulator 60, the fastening bolt 80 passes through the bolt housing 20 and the end thereof protrudes toward the fastening rod 10 , And the end of the fastening bolt (80) is fastened to the nut (11).

The hydrorol rod having the above-described structure can be tuned in various ways according to the performance of the vehicle by providing various tuning factors such as adjusting the diameter of the orifice hole, selecting the material of the first insulator and the second insulator and the membrane, and adjusting the length of the bolt housing Thus providing more flexible design flexibility than conventional roll loads.

As described above, the embodiments disclosed in the present specification and drawings are only illustrative of specific examples in order to facilitate 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: Housing of bolt
30: First insulator
40:
50:
60: Second insulator
70: End plate

Claims (4)

A bolt housing having one end connected to the clamping rod in the shape of a tube detachable from both sides of the clamping rod, a first insulator made of an elastic material and coupled to one side of the bolt housing, An upper coupling part having a first insulator coupled to one side of an inner circumferential surface thereof, a lower coupling part coupled to the other side of the inner circumferential surface of the upper coupling part in a shape having both open sides, and a lower coupling part coupled to the other side of the bolt housing, A second insulator mounted on an inner peripheral surface of the engaging portion; And an end plate coupled to the other end of the bolt housing by a fastening bolt passing through the bolt housing,
A plunger having an orifice hole is formed between the first insulator and the second insulator so as to penetrate the bolt housing. The plunger is divided into an upper liquid chamber and a lower liquid chamber. The upper liquid chamber and the lower liquid chamber through the orifice holes, Is filled with a predetermined amount of liquid flowing through the cylinder head.
2. The vehicle according to claim 1, wherein the lower engaging portion is formed with an engaging protrusion bent outward at an edge of the end portion, and the upper engaging portion is engaged with the lower engaging portion by curling the end so that the engaging jaw is engaged. Hydro roll load.
[3] The apparatus according to claim 1 or 2, wherein the plunger is composed of a stationary portion coupled between the first insulator and the second insulator, and a membrane mounted on the inner circumferential surface of the stationary portion and having an orifice hole as an elastic material A hydraulic roll load for a vehicle.
[4] The apparatus of claim 3, wherein the bolt housing comprises a first bolt housing coupled to the first insulator and a second bolt housing coupled to the second insulator, wherein the first bolt housing and the second bolt housing, Is formed with a concavo-convex surface to be engaged with each other.

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