KR101734715B1

KR101734715B1 - A dog bone typed rear roll rod

Info

Publication number: KR101734715B1
Application number: KR1020150177332A
Authority: KR
Inventors: 김승원
Original assignee: 현대자동차주식회사
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2017-05-11

Abstract

The present invention relates to a dogbone type rear roll rod, and is a dogbone type rear roll rod in which an inner plate, front and rear rubber and center brackets are fastened with a bolt fixed to a rod portion,
An inner pipe 12 for a center piece provided through the center bracket 13, the front rubber 15, the rear rubber 16 and the inner plate 17 to guide the bolt 19 to the rod portion is inserted into the inner plate 12, (17), and the rod portion (10) is formed with a uniform width as a whole,
The rod portion can be easily and cost-reduced by extrusion, the structure of the front rubber can be improved to improve the dynamic characteristics and the durability, and the rod portion can be manufactured more easily by extrusion, thereby shortening the manufacturing time and reducing the number of molds And scrap is prevented from being generated, thereby achieving cost reduction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a dog type rear roll load,

[0001] The present invention relates to a dog-type rear-load rod, and more particularly to a dog-type rear-load rod having a structure in which the size of the angular rubber portion is increased relative to the cross-sectional area of the rod portion and the sectional area of the rod portion is reduced to reduce weight and cost, To a rear roll load.

Generally, there are inertial support system, center support system and composite support system in the way of supporting the power train of the vehicle. Among them, IDLE performance is relatively excellent, and the inertial support system, which is widely used, Depending on the number of mounts, it is divided into 4 point support type and 3 point support type.

In the three-point support system, the engine mount on one side of the engine and the transmission mount on one side of the transmission are mounted on the upper or side surface of the side member of the vehicle body in the same manner as the four-point support system, and instead of the front and rear roll mounts And the roll load is mounted on the 'H' type sub-frame.

Rear roll rods that control the roll behavior of the power train in the inertia point support system are generally divided into a bush type and a dog type. The bushing type has a large tuning freedom but is disadvantageous in heavy load control, so a dog type roll load is often used in a high torque engine.

As shown in FIG. 1 and FIG. 2, the conventional roll roll of this dog type is composed of a rod portion 1, an inner pipe 2 for a center piece integrally formed at the tip of the rod portion 1, a center bracket A front rubber 5 and a rear rubber 6 which are respectively disposed and held in the grooves formed on the front and rear sides of the center bracket 3 and an inner plate 7 disposed outside the front rubber And a bolt (9) for passing through the inner plate, the front and rear rubber, the center bracket and the inner pipe of the rod portion in order, and the bolt (9) The square nut 4 is fastened and held.

The front rubber (5) and the rear rubber (6) function to damp vibration and noise transmitted, and to control the generation of a large shift of the power train.

The roll type rod type structure having such a configuration is disclosed in Korean Patent Laid-Open No. 10-2011-0060424 (published on Jun. 08, 2011) as a roll rod type of inertia three-point support type.

In such a conventional dog-type roll rod, the rod portion 1 is generally made of aluminum or steel so as to make a great effort for cost / weight improvement. The rod portion is mounted near the center of gravity (C.G.) of the power train in the subframe, and the rod portion is located at the lowermost end of the vehicle and is damaged due to external factors. In addition, the top of the engine / thm mount supports the force at the time of the sudden acceleration evaluation, but the load applied to the load portion is considerably large because the rear roll load at the lower end supports all the combined forces in the two mounts.

Therefore, it is a general practice to use a squeeze method in order to secure the strength / rigidity of the rod portion because the rod portion is required to take a long time to manufacture, in addition to the weight / cost as well as the strength / rigidity. However, as shown in FIG. 3, since the size of the rod part 1 produced by the squeeze method is large, two pieces are produced for each one of the ordinary molds, which is disadvantageous in terms of the circular surface, and the material loss due to scrap is large There is a disadvantage that the cost increases.

Korean Patent Laid-Open No. 10-2011-0060424 (published on June 08, 2011)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an improved rod portion which can be manufactured so that the rod portion can be manufactured by simple extrusion and cost reduction so as to solve the problems of the conventional dog type roll rod, Type rear-roll rod having an improved structure with a front rubber of the structure.

In order to accomplish the above object, a dogbone type rear roll according to the present invention is a dogbone type rear roll rod in which an inner plate, front and rear rubber and center brackets are fastened with bolts fixed to a rod portion,

An inner pipe integrally formed with the inner plate for guiding the bolt to the rod portion through the center bracket, the front rubber, the rear rubber, and the inner plate,

And the rod portion is formed with a uniform width as a whole.

The rod portion is preferably formed by an aluminum extrusion method.

The cross-sectional area of the front rubber is increased corresponding to the cross-sectional area of the end portion of the rod portion to improve the dispersion capacity of the load transmitted through the rod portion. A cap member having the same shape as that of the front rubber is formed on the end face of the front rubber .

The rod portion can be easily and cost-reduced by extrusion, the structure of the front rubber can be improved to improve the dynamic characteristics and the durability, and the rod portion can be manufactured more easily by extrusion, thereby shortening the manufacturing time and reducing the number of molds And scrap is prevented from being generated, thereby achieving cost reduction.

1 is a schematic perspective view of a conventional dog type roll load.
2 is an exploded view of the roll rod of Fig.
3 is a perspective view showing the manufacture of a rod portion by a conventional squeeze method.
4 is a perspective view of a dog-type roll rod according to the present invention.
Figure 5 is an exploded perspective view showing an improved structure of the roll rod of Figure 3;
6 is an improved front rubber and its exploded perspective view.
7 is a view showing a force transmission structure of a roll rod according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown.

4 and 5, in the present invention, the front and rear rubber members 15 and 16, which are respectively disposed and held in the grooves formed on the front and rear sides of the center bracket 13, ), A housing bracket (18) including an inner plate (17) disposed on the front outside of the front rubber, a housing bracket (18) fixed to the rod portion by passing through the inner plate, the front and rear rubber, the center bracket and the inner pipe And the bolts 19 to be assembled by fastening the bolts 19 as a component.

The connecting portion 20 provided at the end of the rod portion 10 has an insulator 21 connected to the powertrain of the vehicle and acting as a damper and the housing bracket 18 at the opposite end portion constitutes a suspension Is installed so as to be connected to the cross member of the conventional roll load.

In the present invention, the center pipe-use inner pipe 12 integrally formed at the tip end of the conventional rod portion is separated from the rod portion and integrally formed with the inner plate 17 to further simplify the structure of the rod portion 10, It has been improved so that it can be manufactured by aluminum extrusion molding method instead of the public method.

In addition, the rod portion 10 is formed to have the same width, so that when the rod portion of the roll rod is manufactured by the extrusion method, machining is minimized and subsequent work is minimized, thereby further improving the cost .

In addition, since the rod portion is manufactured by the aluminum extrusion method, the density of the structure becomes more compact as compared with the manufacture by the conventional squeeze method, and the strength / rigidity is improved, thereby improving the NVH. In addition, .

By thus changing the structure of removing the inner pipe 12, the structure can be improved so that the rod portion 10 can be extruded in the width direction, not the longitudinal direction, so that the number of molds can be reduced And there is an advantage that cost can be greatly reduced by deleting scrap.

The inner pipe 12 removed from the rod portion 10 according to the present invention is integrally formed on the back surface side of the inner plate 17 disposed in front of the center bracket 13, The plate 17 and the inner pipe 12 and is fastened and fixed by the square nut 14. [

In addition, according to the present invention, since the rod portion 10 is formed to have a constant width for extrusion molding, the cross-sectional area of the end portion becomes smaller than that of the conventional art. On the other hand, . The reduction of the cross-sectional area of the rod portion also attains the weight / cost improvement effect of the rod portion.

As shown in FIG. 6, the size of the front rubber 15 opposed to the roll rod is enlarged corresponding to the roll rod, and the load transmitted through the rod portion 10 can be dispersed and accommodated in the enlarged end face The same shape as the shape of the end face is formed on the end face so that the end face of the front rubber is not damaged even when the square nut 14 is installed and the load can be evenly distributed throughout the end face. Shaped cap member (26).

7, the vibration, noise, and load generated in the power train are attenuated and dispersed by the front rubber 15 of the cap and the enlarged end face, as shown in Fig. 7, with the improved front rubber including the cap on the end face. It contributes to the improvement of the NVH and the durability of the roll load.

The present invention can be easily applied to a dog-type roll load so as to obtain a weight / cost improvement effect.

10: rod section 12: inner pipe
13: center bracket 15: front rubber
16: rear rubber 17: inner plate
18: Housing bracket 19: Bolt
20: connection 21: insulator
26; The cap member

Claims

A dog-bed type rear-wheel loader in which an inner plate, front and rear rubbers, and a center bracket are fastened with bolts fixed to a rod portion,
A center pipe inner pipe 12 provided through the center bracket 13, the front rubber 15, the rear rubber 16 and the inner plate 17 so as to guide the bolt 19 to the rod portion 10, Is formed integrally with the inner plate 17,
Wherein the rod portion (10) is formed with a uniform width as a whole.

The dog-type rear roll load according to claim 1, wherein the rod portion (10) is formed by an aluminum extrusion method.

3. The method according to claim 1 or 2,
Sectional area of the front rubber 15 is increased to a size corresponding to the sectional area of the end portion of the rod portion 10 so as to improve the dispersion capacity of the load transmitted through the rod portion 10, Wherein a cap member (26) having the same shape as that of the cap member (26) is provided.