BUSH DEVICE FOR EYE SECTION OF LEAF SPRING

• US 20190315177A1
• Filed: 11/03/2018
• Published: 10/17/2019
• Est. Priority Date: 04/17/2018
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Kia Motors Corporation (Kia Corp.)
• Inventors: Cho, Sung-Han, Lee, Yong-Soo
• Granted Patent: US 10,946,708 B2
• Time in Patent Office: Days
• CPC Class Codes: B60G 11/113 Mountings on the axle B60G11/107 takes precedence
• CPC Class Codes: B60G 11/12 Links, pins, or bushes
• CPC Class Codes: B60G 2202/112 longitudinally arranged
• CPC Class Codes: B60G 2204/121 Mounting of leaf springs
• CPC Class Codes: B60G 2204/41 Elastic mounts, e.g. bushings
• CPC Class Codes: B60G 2204/43 Fittings, brackets or knuckles

Abstract

A bush device for an eye section of a leaf spring applied to a suspension of a vehicle is disclosed. The bush device includes a first hollow bush that is configured to be inserted into the eye section, and a plurality of second bushes that are disposed adjacent to both side surfaces of the eye section, respectively. Each of the second bushes have an aperture that is formed at a central portion thereof, and a leaf spring fixing bracket into which the second bushes are inserted.

Claims

1. A bush device for an eye section of a leaf spring applied to a suspension of a vehicle, comprising:

a first hollow bush configured to be inserted into the eye section;

a plurality of second bushes disposed adjacent to both side surfaces of the eye section, respectively, each of the second bushes having an aperture formed at a central portion thereof; and

a leaf spring fixing bracket into which the second bushes are inserted.

2. The bush device for the eye section of the leaf spring of claim 1, wherein a hollow pipe pin is inserted into the first bush.

3. The bush device for the eye section of the leaf spring of claim 1, wherein a hollow inner pipe is inserted into the aperture of each of the second bushes.

4. The bush device for the eye section of the leaf spring of claim 3, wherein head parts are formed at both ends of the inner pipe in a circumferential direction, respectively, and each head part extends by a particular distance in a radial direction.

5. The bush device for the eye section of the leaf spring of claim 4, wherein the eye section and the second bushes are coupled to each other by a coupling bolt that passes through the inner pipe coupled to a first of the second bushes, the pipe pin and the inner pipe coupled to a second of the second bushes.

6. The bush device for the eye section of the leaf spring of claim 5, wherein both ends of the pipe pin abut and be secured to the head parts of the inner pipes by an axial force exerted by a coupling between the connecting bolt and a nut.

7. The bush device for the eye section of the leaf spring of claim 1, wherein the leaf spring fixing bracket includes a first housing and a second housing.

8. The bush device for the eye section of the leaf spring of claim 7, wherein each of the first housing and the second housing includes a cavity formed therein to receive the eye section.

9. The bush device for the eye section of the leaf spring of claim 8, wherein a bush receiving portion configured to receive the second bush therein is formed at each of both side walls of each of the first housing and the second housing disposed adjacent to both side surfaces of the eye section.

10. The eye section bush device of the leaf spring of claim 9, wherein the first bush has a circular cross section, and the bush receiving portion includes a semicircular groove having a semicircular cross-section and formed thereon.

11. The bush device for the eye section of the leaf spring of claim 10, wherein, on a lower surface of each of both side walls of the first housing or the second housing, bolt bores having a predetermined length are formed at portions spaced apart from the bush receiving portion towards a front end and a rear end, respectively.

12. The bush device for the eye section of the leaf spring of claim 11, wherein, in the first housing or the second housing, bolt apertures are formed at portions spaced apart from the bush receiving portion towards the front end and the rear end, respectively.

13. The bush device for the eye section of the leaf spring of claim 12, wherein a bolt is inserted through the bolt aperture and bolt-coupled to each of the bolt bores, which includes a thread formed on an inner side thereof, of the first housing or the second housing.

14. The bush device for the eye section of the leaf spring of claim 1, wherein the first bush is a brass bush and the second bush is a rubber bush.