Roll rod for vehicle and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11607943-B2
Application number	US-202017001913-A
Country	US
Kind code	B2
Filing date	Aug 25, 2020
Priority date	Sep 2, 2019
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

A roll rod for a vehicle includes: a front insulator connected to a powertrain; a rod bracket to mount the front insulator on a front end portion of the rod bracket; a case bracket disposed outside the rod bracket and fastened to a vehicle body; a stopping rubber formed at a rear end portion of the rod bracket and disposed in an inner space defined by the case bracket; and a rear insulator formed between the rod bracket and the case bracket, where the rear insulator is secured to an outer side surface of the rod bracket and an inner side surface of the case bracket. The roll rod enhances an insulation rate against vibration of a powertrain and improves durability while reducing manufacturing costs through the simple structure and application of an extrusion molding method.

First claim

What is claimed is:

1. A roll rod for a vehicle, comprising:
a front insulator connected to a powertrain;
a rod bracket configured to mount the front insulator on a front end portion thereof;
a case bracket disposed outside the rod bracket, the case bracket being fastened to a vehicle body;
a stopping rubber formed at a rear end portion of the rod bracket, the stopping rubber being disposed in an inner space defined by the case bracket; and
a rear insulator formed between the rod bracket and the case bracket, the rear insulator being secured to an outer side surface of the rod bracket and an inner side surface of the case bracket,
wherein the case bracket comprises:
a first casing disposed on a left side of the rod bracket while being spaced a predetermined interval apart therefrom,
a second casing disposed on a right side of the rod bracket while being spaced a predetermined interval apart therefrom, and
a third casing disposed behind the rod bracket while being spaced a predetermined interval apart therefrom,

wherein the rear insulator comprises:
a first bridge rubber attached to an inner side surface of the first casing and a left surface of the rod bracket, and
a second bridge rubber attached to an inner side surface of the second casing and a right surface of the rod bracket, and

wherein the case bracket further comprises:
a first wall formed on an inner side surface of the first casing and disposed behind the first bridge rubber and ahead of the stopping rubber, and
a second wall formed on an inner side surface of the second casing and disposed behind the second bridge rubber and ahead of the stopping rubber.

2. The roll rod of claim 1 ,
wherein when the rod bracket is moved forwards, a front surface portion of the stopping rubber is brought into contact with the first wall and the second wall of the case bracket, and when the rod bracket is moved backwards, a rear surface portion of the stopping rubber is brought into contact with the third casing of the case bracket.

3. The roll rod of claim 2 , further comprising:
a stopping bracket assembled to a rear end portion of the rod bracket, the stopping bracket being accommodated in the stopping rubber,
wherein a left portion of the stopping bracket protrudes in a leftward direction of the rod bracket and is disposed behind the first wall, and a right portion of the stopping bracket protrudes in a rightward direction of the rod bracket and is disposed behind the second wall.

4. The roll rod of claim 3 , wherein:
the rod bracket comprises a rear bore portion provided at the rear end portion thereof,
the stopping bracket comprises a coupling recess formed in a middle portion thereof, and
the stopping bracket is inserted into an inner space in the rear bore portion, and a rear end portion of the rear bore portion is press-fitted into the coupling recess in the stopping bracket.

5. The roll rod of claim 3 , wherein the stopping rubber comprises: a rear contact portion formed at the rear surface portion thereof, and a first front contact portion and a second front contact portion formed at the front surface portion thereof, and
wherein the rear contact portion is disposed behind the rod bracket, the first front contact portion is disposed behind the first wall on a left side of the rod bracket, and the second front contact portion is disposed behind the second wall on a right side of the rod bracket.

6. The roll rod of claim 1 , wherein the first bridge rubber comprises: a first rod-bonding surface portion attached to the left surface of the rod bracket, and a first case-bonding surface portion attached to the inner side surface of the first casing,
wherein the first rod-bonding surface portion is disposed a predetermined distance further forwards than the first case-bonding surface portion, and
wherein the second bridge rubber comprises: a second rod-bonding surface portion attached to the right surface of the rod bracket, and a second case-bonding surface portion attached to the inner side surface of the second casing, the second rod-bonding surface portion being disposed a predetermined distance further forwards than the second case-bonding surface portion.

7. The roll rod of claim 1 , wherein the case bracket further comprises: a first vehicle-body-coupling portion protruding from an outer side surface of the first casing to be fastened to a vehicle body, and a second vehicle-body-coupling portion protruding from an outer side surface of the second casing to be fastened to the vehicle body.

8. A method of manufacturing a roll rod for a vehicle comprising a front insulator connected to a powertrain, the method comprising:
forming a rod bracket, the rod bracket comprising a front mounting portion formed at a front end portion thereof to which the front insulator is mounted;
forming a case bracket, the case bracket comprising a vehicle-body-coupling portion to be fastened to a vehicle body;
placing the case bracket outside the rod bracket such that a rear end portion of the rod bracket is disposed in an inner space defined by the case bracket;
forming a rear insulator between an outer side surface of the rod bracket and an inner side surface of the case bracket, wherein the rear insulator comprises a first bridge rubber and a second bridge rubber; and
forming a stopping rubber at the rear end portion of the rod bracket disposed in the inner space defined by the case bracket,
wherein the case bracket comprises a first casing, a second casing, and a third casing, and
wherein, when placing the case bracket outside of the rod bracket, the first casing is disposed on a left side of the rod bracket while being spaced a predetermined interval apart therefrom, the second casing is disposed on a right side of the rod bracket while being spaced a predetermined interval apart therefrom, and the third casing is disposed behind the rod bracket while being spaced a predetermined interval apart therefrom,
wherein, when forming the rear insulator, the first bridge rubber is attached to an inner side surface of the first casing and a left surface of the rod bracket, and the second bridge rubber is attached to an inner side surface of the second casing and a right surface of the rod bracket,
wherein, when forming the case bracket, a first wall is protrudingly formed at an inner side surface of the first casing, and a second wall is protrudingly formed at an inner side surface of the second casing,
wherein, when forming the stopping rubber, a rear surface portion of the stopping rubber is spaced a predetermined interval apart from the third casing, and a front surface portion of the stopping rubber is spaced a predetermined interval apart from the first wall and the second wall, and
wherein the first wall is disposed behind the first bridge rubber, and the second wall disposed behind the second bridge rubber.

9. The method of claim 8 , wherein, while forming the stopping rubber, a rear contact portion is formed at the rear surface portion of the stopping rubber, and
wherein the rear contact portion is disposed behind the rod bracket and is spaced a predetermined interval apart from the third casing.

10. The method of claim 8 , wherein, while forming the stopping rubber, a first front contact portion and a second front contact portion are formed at the front surface portion of the stopping rubber, and
wherein the first front contact portion is disposed behind the first wall while being spaced a predetermined interval apart therefrom on a left side of the rod bracket, and the second front contact portion is disposed behind the second wall while being spaced a predetermined interval apart therefrom on a right side of the rod bracket.

Assignees

• Hyundai Motor Co Ltd
• Kia Motors Corp

Inventors

• Kim Seung Won

Classifications

• B21C23/142

  Making profiles · CPC title

• B60K5/1208 Primary

  Resilient supports (B60K5/1241 - B60K5/1291 take precedence) · CPC title

• B29C48/022

  characterised by the choice of material · CPC title

• B60K5/1241 Primary

  Link-type support (B60K5/125, B60K5/1275 take precedence) · CPC title

• B21C23/08

  Making wire, rods or tubes · CPC title