KR20180045506A - Roll-rod for vehicle - Google Patents

Abstract

The present invention relates to a roll-rod for a vehicle which is arranged with a case bracket between a front rubber and a rear rubber, and is mounted with a rod through the front rubber, the rear rubber, and the case bracket such that the front rubber and the rear rubber are elastically deformed in accordance with the direction of the pressure applied to the rod. A stopper ring limiting an amount of elastic deformation is fitted on the outer circumferential surface of at least one of the front rubber and the rear rubber. The present invention having the compositions is able to improve NVH properties by manufacturing the front rubber and the rear rubber with a material having hardness lower than that of conventional front rubber and rear rubber, while improving R&H properties by preventing excessive elastic compression of the front rubber and the rear rubber by the stopper ring.

Description

[0001] The present invention relates to a roll-

The present invention relates to a vehicle roll rod fixedly mounted on a rear member of a cross member (subframe) and mounted on a front end of the vehicle so as to be connected to a power train to support the behavior of the power train. More specifically, Which is capable of suppressing excessive elastic deformation of the vehicle, thereby improving the running performance.

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 an engine and a transmission are combined is directly mounted in an engine room of the vehicle body.

Therefore, the monocoque body is mounted on the lower part of the vehicle in order to prevent the vibration of the power train from being directly transmitted to the vehicle body, Member (subframe) is mounted.

The cross member is mounted with a suspension device, a steering device and the like, and is connected to a lower portion of the power train through a roll rod. That is, both the engine mount and the transmission mount are mounted on both sides of the vehicle body to support the load of the power train, and the roll load mounted on the cross member shares displacement control and vibration attenuation of the power train.

1, a conventional roll rod includes a rod 50 having an end connected to a power train and having a bar shape and a pipe 52 extending toward the rear side of the rod 50 And a case bracket 60 is mounted between the rod 50 and the end plate 90 so as to be coupled to a cross member (not shown). The front rubber 70 and the rear rubber 80 of rubber material (or synthetic resin material) are disposed on the front and rear sides of the case bracket 60, respectively. A rubber bushing 51 is mounted on the front end of the rod 50 and connected to the power train. When the end plate 90 is fitted to the pipe 52, the bolt 53 is inserted into the pipe 52 The front bushing 70, the case bracket 60, the rear bushing 80, and the end plate 90 are fixed.

The front rubber 70 and the rear rubber 80 control the behavior of the power train when the vehicle is advanced or retracted, and elastically deform to isolate the vibration. For example, the rod 50 is moved forward or backward due to the rapid acceleration of the vehicle or the behavior of the power train due to inertia at the time of sudden stop. At this time, the front rubber 70 and the rear rubber 80 are supported by the partition walls 61 of the case bracket 60 having the holes 62 through which the bolts 53 pass, and are elastically compressed.

That is, the roll load controls the behavior of the powertrain and affects the performance of noise, vibration, harshness (NVH), and performance of R & H (Riding & Handling).

However, it is advantageous to improve the NVH performance by increasing the insulation rate by manufacturing the front rubber 70 and the rear rubber 80 with a relatively low hardness material. On the other hand, the R & H performance is enhanced by the relatively hard material It is advantageous to manufacture the rubber 70 and the rear rubber 80 to more firmly control the behavior of the power train.

That is, NVH performance and R & H performance are in conflict with each other, and it is difficult to satisfy both NVH performance and R & H performance in the conventional structure.

Therefore, in order to solve the above-mentioned conventional problems, the present invention uses a front rubber and a rear rubber made of materials having lower hardness than conventional rubber (front rubber, rear rubber) It is of primary interest to provide a vehicle roll load that can improve both NVH performance and R & H performance by preventing elastic deformation.

In order to achieve the above object, the present invention is characterized in that a case bracket is disposed between a front rubber and a rear rubber, and a rod is mounted through the front rubber, the rear rubber and the case bracket, A rubber or a rear rubber is resiliently deformed, characterized in that a stopper ring which restricts an amount of elastic deformation is fitted to the outer circumferential surface of at least one of the front rubber and the rear rubber.

At least one of the front rubber and the rear rubber has a mounting groove on an outer circumferential surface thereof, and a stopper ring is fitted in the mounting groove.

The stopper ring is made of engineering plastics material having a greater rigidity than the material of the front rubber and the rear rubber.

The protruding portion protrudes from any one of a surface facing the front rubber or a surface facing the rear rubber, and the protruding portion protrudes from the front surface facing the front rubber or the surface facing the rear rubber And at least one of the front rubber and the rear rubber has a groove portion into which the projection enters.

In the embodiment of the present invention, two protrusions are formed at positions opposed to each other, and two grooves are formed at corresponding positions of the protrusions.

Wherein the stopper ring includes a first stopper ring fitted to the front rubber and a second stopper ring fitted to the rear rubber, wherein the first stopper ring is fastened at a position closer to the front end than the rear end of the front rubber, 2 The stopper ring is fastened at a position closer to the rear end than the front end of the rear rubber.

The front rubber and the rear rubber are made of a rubber material having a hardness in the range of rubber hardnesses 38 to 42 so as to have a lower hardness than conventional rubbers made of a rubber material having a hardness spring (HS) 43 or higher.

The present invention having the above-described structure can improve the NVH performance by manufacturing the front rubber and the rear rubber with a material having lower hardness than the conventional front rubber and rear rubber. However, since the stopper ring has excessive elasticity of the front rubber and the rear rubber R & H performance can also be increased by preventing compression.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a state and a disassembled state of a conventional roll rod,
2 is a perspective view of a roll load according to a preferred embodiment of the present invention,
3 shows a view of a front rubber (or a rear rubber having the same appearance as a front rubber) according to a preferred embodiment of the present invention,
4 is a view showing a state in which a stopper ring is inserted into a front rubber (or a rear rubber having the same shape as a front rubber) according to a preferred embodiment of the present invention,
FIG. 5 is a view showing a state where a groove is formed on a side surface of a front rubber (or a rear rubber having the same shape as a front rubber) according to a preferred embodiment of the present invention;
FIG. 6 is a view showing a protruding portion fitted to the groove portion of FIG. 5 in a state where the protruding portion is formed on the partition wall of the case bracket;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that the present invention can be easily carried out by those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventor should properly define the concept of the term to describe its invention in the best way. It should be construed as meaning and concept consistent with the technical idea of the present invention.

The present invention relates to a roll rod in which a case bracket (40) is fixedly mounted on a cross member and the front end of the rod (50) is connected to a power train, and thus a preferred embodiment of the present invention will be described in detail with reference to the drawings .

2, the rod 50 according to the present invention includes a front rubber 10, a case bracket 40, a rear rubber 20, and the like, between the rod 50 and the end plate 90, The front rubber 10 and the rear rubber 20 are made of a material having a hardness lower than that of a conventional material (for example, in the conventional structure, the front rubber and the rear rubber are made of a rubber hardness meter HS The front rubber and the rear rubber in the present invention can be made of a rubber material having a hardness ranging from 38 to 42 in the rubber hardness meter). Then, the stopper rings 30 (30a, 30b) are additionally mounted.

That is, the front rubber 10 or the rear rubber 20 are elastically deformed along the direction of the pressure applied to the rod 50 by the behavior of the power train. In the present invention, the front rubber 10 and the rear rubber 20 ), A stopper ring (30) for limiting the amount of elastic deformation is fitted to the outer peripheral surface

In the embodiment of the present invention, the front rubber 10 and the rear rubber 20 are made to have the same shape (as in the mounting direction of the front rubber and the rear rubber shown in Fig. 1) And the rear rubber 20 is mounted such that a portion with a relatively small diameter is directed rearward. In order to fix the position of the stopper ring 30, the front rubber 10 and the rear rubber 20 are fitted into the mounting grooves 11, The rings 30a and 30b are fitted.

In the preferred embodiment of the present invention, the stopper ring 30 includes a first stopper ring 30a fitted to the front rubber 10 and a second stopper ring 30b fitted to the rear rubber 20, The first stopper ring 30a and the second stopper ring 30b are sandwiched between the front rubber 10 and the rear rubber 20 at a position near the end with a relatively small diameter so that the first stopper ring 30a Is fastened at a position closer to the front end than the rear end of the front rubber 10 and the second stopper ring 30b is fastened at a position closer to the rear end than the front end of the rear rubber 20 ).

In the present invention, the stopper ring 30 (30a, 30b) is made of engineering plastics material having a greater rigidity than that of the front rubber 10 and the rear rubber 20.

In order to reduce the lengths of the front rubber 10 and the rear rubber 20 with respect to the conventional structure, the front rubber 10 and the rear rubber 20 are provided with grooves 12, 22 are formed as shown in Fig. The protruding portion 43 that enters the groove portions 12 and 22 is formed on the partition wall 41 of the case bracket 40 facing the front rubber 10 on one side and the rear rubber 20 on the opposite side, As shown in Fig. For reference, a hole 42 through which a bolt penetrates is formed in the partition wall 41 as in the conventional structure.

Two protrusions 43 are formed at positions opposite to each other, and two grooves 12, 22 are formed at corresponding positions of the protrusions 43, respectively.

The present invention having the above-described structure can improve the NVH performance by manufacturing the front rubber 10 and the rear rubber 20 with a material having a lower hardness than that of the conventional front rubber and rear rubber, It is possible to increase the R & H performance by preventing excessive elastic compression of the front rubber 10 and the rear rubber 20. (That is, even if an excessive load is applied to the roll rod, the front rubber and the rear rubber, It can be strongly supported).

Further, the stopper ring 30 may be mounted to be offset to the front and rear sides to additionally provide a forward / backward stopper function (that is, to prevent excessive movement of the rod) It is possible to prevent the deformation of the rubbers 10 and 20 due to the deformation of the ribs 10 and 20 by being inserted into the grooves 11 and 21.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be apparent to those of ordinary skill in the art.

10: front rubber
11, 21: mounting groove
12, 22:
20: rear rubber
30: Stopper ring
40: Case bracket
43: protrusion

Claims (7)

A case bracket is disposed between the front rubber and the rear rubber, and a rod is mounted through the front rubber, the rear rubber, and the case bracket, and the front rubber or the rear rubber is elastically deformed along the direction of the pressure applied to the rod, As a result,
Wherein at least one of the front rubber and the rear rubber has a stopper ring fitted to an outer circumferential surface thereof for restricting an amount of elastic deformation.
The roll load for a vehicle according to claim 1, wherein at least one of the front rubber and the rear rubber has a mounting groove on an outer circumferential surface thereof, and a stopper ring is fitted in the mounting groove.
2. The automotive roll rod according to claim 1, wherein the stopper ring is made of engineering plastics material having a greater rigidity than the material of the front rubber and the rear rubber.
The seat belt retractor according to any one of claims 1 to 3, wherein protrusions protrude from the partition wall of the case bracket opposite to the front rubber on the one side and the rear rubber on the opposite side to the rear rubber, Wherein the protruding portion protrudes from any one of surfaces facing the rubber, and at least one of the front rubber and the rear rubber has a groove portion into which the protruding portion enters.
5. The roll rod for a vehicle according to claim 4, wherein two protrusions are formed at positions opposite to each other and two grooves are formed at corresponding positions of the protrusions.
The stopper ring according to any one of claims 1 to 3, wherein the stopper ring includes a first stopper ring fitted to the front rubber and a second stopper ring fitted to the rear rubber,
Wherein the first stopper ring is fastened at a position closer to the front end than the rear end of the front rubber and the second stopper ring is fastened at a position closer to the rear end than the front end of the rear rubber.
4. The vehicle roll rod according to any one of claims 1 to 3, wherein the front rubber and the rear rubber are made of a rubber material having a hardness ranging from 38 to 42 in a rubber hardness meter (HS).

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